if_rum.c revision 1.3
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.3 2006/11/25 21:35:08 christos 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 1.3 2006/11/25 21:35:08 christos Exp $"); 28 29 #include "bpfilter.h" 30 31 #include <sys/param.h> 32 #include <sys/sockio.h> 33 #include <sys/sysctl.h> 34 #include <sys/mbuf.h> 35 #include <sys/kernel.h> 36 #include <sys/socket.h> 37 #include <sys/systm.h> 38 #include <sys/malloc.h> 39 #include <sys/conf.h> 40 #include <sys/device.h> 41 42 #include <machine/bus.h> 43 #include <machine/endian.h> 44 #include <machine/intr.h> 45 46 #if NBPFILTER > 0 47 #include <net/bpf.h> 48 #endif 49 #include <net/if.h> 50 #include <net/if_arp.h> 51 #include <net/if_dl.h> 52 #include <net/if_ether.h> 53 #include <net/if_media.h> 54 #include <net/if_types.h> 55 56 #include <netinet/in.h> 57 #include <netinet/in_systm.h> 58 #include <netinet/in_var.h> 59 #include <netinet/ip.h> 60 61 #include <net80211/ieee80211_netbsd.h> 62 #include <net80211/ieee80211_var.h> 63 #include <net80211/ieee80211_amrr.h> 64 #include <net80211/ieee80211_radiotap.h> 65 66 #include <dev/firmload.h> 67 68 #include <dev/usb/usb.h> 69 #include <dev/usb/usbdi.h> 70 #include <dev/usb/usbdi_util.h> 71 #include <dev/usb/usbdevs.h> 72 73 #include <dev/usb/if_rumreg.h> 74 #include <dev/usb/if_rumvar.h> 75 76 #ifdef USB_DEBUG 77 #define RUM_DEBUG 78 #endif 79 80 #ifdef RUM_DEBUG 81 #define DPRINTF(x) do { if (rum_debug) logprintf x; } while (0) 82 #define DPRINTFN(n, x) do { if (rum_debug >= (n)) logprintf x; } while (0) 83 int rum_debug = 0; 84 #else 85 #define DPRINTF(x) 86 #define DPRINTFN(n, x) 87 #endif 88 89 /* various supported device vendors/products */ 90 static const struct usb_devno rum_devs[] = { 91 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573 }, 92 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 93 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 94 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 95 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 96 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 97 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 98 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 99 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 100 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 101 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 102 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 103 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 104 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 105 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 106 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 107 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 108 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 109 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 110 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 111 { USB_VENDOR_RALINK_2, USB_PRODUCT_RALINK_2_RT2573 }, 112 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 113 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 114 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 115 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 116 }; 117 118 Static int rum_attachhook(void *); 119 Static int rum_alloc_tx_list(struct rum_softc *); 120 Static void rum_free_tx_list(struct rum_softc *); 121 Static int rum_alloc_rx_list(struct rum_softc *); 122 Static void rum_free_rx_list(struct rum_softc *); 123 Static int rum_media_change(struct ifnet *); 124 Static void rum_next_scan(void *); 125 Static void rum_task(void *); 126 Static int rum_newstate(struct ieee80211com *, 127 enum ieee80211_state, int); 128 Static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 129 usbd_status); 130 Static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 131 usbd_status); 132 #if NBPFILTER > 0 133 Static uint8_t rum_rxrate(struct rum_rx_desc *); 134 #endif 135 Static int rum_ack_rate(struct ieee80211com *, int); 136 Static uint16_t rum_txtime(int, int, uint32_t); 137 Static uint8_t rum_plcp_signal(int); 138 Static void rum_setup_tx_desc(struct rum_softc *, 139 struct rum_tx_desc *, uint32_t, uint16_t, int, 140 int); 141 Static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 142 struct ieee80211_node *); 143 Static int rum_tx_data(struct rum_softc *, struct mbuf *, 144 struct ieee80211_node *); 145 Static void rum_start(struct ifnet *); 146 Static void rum_watchdog(struct ifnet *); 147 Static int rum_ioctl(struct ifnet *, u_long, caddr_t); 148 Static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 149 int); 150 Static uint32_t rum_read(struct rum_softc *, uint16_t); 151 Static void rum_read_multi(struct rum_softc *, uint16_t, void *, 152 int); 153 Static void rum_write(struct rum_softc *, uint16_t, uint32_t); 154 Static void rum_write_multi(struct rum_softc *, uint16_t, void *, 155 size_t); 156 Static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 157 Static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 158 Static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 159 Static void rum_select_antenna(struct rum_softc *); 160 Static void rum_enable_mrr(struct rum_softc *); 161 Static void rum_set_txpreamble(struct rum_softc *); 162 Static void rum_set_basicrates(struct rum_softc *); 163 Static void rum_select_band(struct rum_softc *, 164 struct ieee80211_channel *); 165 Static void rum_set_chan(struct rum_softc *, 166 struct ieee80211_channel *); 167 Static void rum_enable_tsf_sync(struct rum_softc *); 168 Static void rum_update_slot(struct rum_softc *); 169 Static void rum_set_bssid(struct rum_softc *, const uint8_t *); 170 Static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 171 Static void rum_update_promisc(struct rum_softc *); 172 Static const char *rum_get_rf(int); 173 Static void rum_read_eeprom(struct rum_softc *); 174 Static int rum_bbp_init(struct rum_softc *); 175 Static int rum_init(struct ifnet *); 176 Static void rum_stop(struct ifnet *, int); 177 Static int rum_load_microcode(struct rum_softc *, const u_char *, 178 size_t); 179 Static int rum_prepare_beacon(struct rum_softc *); 180 Static void rum_amrr_start(struct rum_softc *, 181 struct ieee80211_node *); 182 Static void rum_amrr_timeout(void *); 183 Static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 184 usbd_status status); 185 186 /* 187 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 188 */ 189 static const struct ieee80211_rateset rum_rateset_11a = 190 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 191 192 static const struct ieee80211_rateset rum_rateset_11b = 193 { 4, { 2, 4, 11, 22 } }; 194 195 static const struct ieee80211_rateset rum_rateset_11g = 196 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 197 198 static const struct { 199 uint32_t reg; 200 uint32_t val; 201 } rum_def_mac[] = { 202 RT2573_DEF_MAC 203 }; 204 205 static const struct { 206 uint8_t reg; 207 uint8_t val; 208 } rum_def_bbp[] = { 209 RT2573_DEF_BBP 210 }; 211 212 static const struct rfprog { 213 uint8_t chan; 214 uint32_t r1, r2, r3, r4; 215 } rum_rf5226[] = { 216 RT2573_RF5226 217 }, rum_rf5225[] = { 218 RT2573_RF5225 219 }; 220 221 USB_DECLARE_DRIVER(rum); 222 223 USB_MATCH(rum) 224 { 225 USB_MATCH_START(rum, uaa); 226 227 if (uaa->iface != NULL) 228 return UMATCH_NONE; 229 230 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 231 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 232 } 233 234 Static int 235 rum_attachhook(void *xsc) 236 { 237 struct rum_softc *sc = xsc; 238 firmware_handle_t fwh; 239 const char *name = "rum-rt2573"; 240 u_char *ucode; 241 size_t size; 242 int error; 243 244 if ((error = firmware_open("rum", name, &fwh)) != 0) { 245 printf("%s: failed loadfirmware of file %s (error %d)\n", 246 USBDEVNAME(sc->sc_dev), name, error); 247 return error; 248 } 249 size = firmware_get_size(fwh); 250 ucode = firmware_malloc(size); 251 if (ucode == NULL) { 252 printf("%s: failed to allocate firmware memory\n", 253 USBDEVNAME(sc->sc_dev)); 254 firmware_close(fwh); 255 return ENOMEM;; 256 } 257 error = firmware_read(fwh, 0, ucode, size); 258 firmware_close(fwh); 259 if (error != 0) { 260 printf("%s: failed to read firmware (error %d)\n", 261 USBDEVNAME(sc->sc_dev), error); 262 firmware_free(ucode, 0); 263 return error; 264 } 265 266 if (rum_load_microcode(sc, ucode, size) != 0) { 267 printf("%s: could not load 8051 microcode\n", 268 USBDEVNAME(sc->sc_dev)); 269 firmware_free(ucode, 0); 270 return ENXIO; 271 } 272 273 firmware_free(ucode, 0); 274 sc->sc_flags |= RT2573_FWLOADED; 275 276 return 0; 277 } 278 279 USB_ATTACH(rum) 280 { 281 USB_ATTACH_START(rum, sc, uaa); 282 struct ieee80211com *ic = &sc->sc_ic; 283 struct ifnet *ifp = &sc->sc_if; 284 usb_interface_descriptor_t *id; 285 usb_endpoint_descriptor_t *ed; 286 usbd_status error; 287 char *devinfop; 288 int i, ntries; 289 uint32_t tmp; 290 291 sc->sc_udev = uaa->device; 292 sc->sc_flags = 0; 293 294 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 295 USB_ATTACH_SETUP; 296 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 297 usbd_devinfo_free(devinfop); 298 299 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 300 printf("%s: could not set configuration no\n", 301 USBDEVNAME(sc->sc_dev)); 302 USB_ATTACH_ERROR_RETURN; 303 } 304 305 /* get the first interface handle */ 306 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 307 &sc->sc_iface); 308 if (error != 0) { 309 printf("%s: could not get interface handle\n", 310 USBDEVNAME(sc->sc_dev)); 311 USB_ATTACH_ERROR_RETURN; 312 } 313 314 /* 315 * Find endpoints. 316 */ 317 id = usbd_get_interface_descriptor(sc->sc_iface); 318 319 sc->sc_rx_no = sc->sc_tx_no = -1; 320 for (i = 0; i < id->bNumEndpoints; i++) { 321 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 322 if (ed == NULL) { 323 printf("%s: no endpoint descriptor for iface %d\n", 324 USBDEVNAME(sc->sc_dev), i); 325 USB_ATTACH_ERROR_RETURN; 326 } 327 328 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 329 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 330 sc->sc_rx_no = ed->bEndpointAddress; 331 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 332 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 333 sc->sc_tx_no = ed->bEndpointAddress; 334 } 335 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 336 printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev)); 337 USB_ATTACH_ERROR_RETURN; 338 } 339 340 usb_init_task(&sc->sc_task, rum_task, sc); 341 callout_init(&sc->scan_ch); 342 343 sc->amrr.amrr_min_success_threshold = 1; 344 sc->amrr.amrr_max_success_threshold = 10; 345 callout_init(&sc->amrr_ch); 346 347 /* retrieve RT2573 rev. no */ 348 for (ntries = 0; ntries < 1000; ntries++) { 349 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 350 break; 351 DELAY(1000); 352 } 353 if (ntries == 1000) { 354 printf("%s: timeout waiting for chip to settle\n", 355 USBDEVNAME(sc->sc_dev)); 356 USB_ATTACH_ERROR_RETURN; 357 } 358 359 /* retrieve MAC address and various other things from EEPROM */ 360 rum_read_eeprom(sc); 361 362 printf("%s: MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 363 USBDEVNAME(sc->sc_dev), sc->macbbp_rev, tmp, 364 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 365 366 ic->ic_ifp = ifp; 367 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 368 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 369 ic->ic_state = IEEE80211_S_INIT; 370 371 /* set device capabilities */ 372 ic->ic_caps = 373 IEEE80211_C_IBSS | /* IBSS mode supported */ 374 IEEE80211_C_MONITOR | /* monitor mode supported */ 375 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 376 IEEE80211_C_TXPMGT | /* tx power management */ 377 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 378 IEEE80211_C_SHSLOT | /* short slot time supported */ 379 IEEE80211_C_WPA; /* 802.11i */ 380 381 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 382 /* set supported .11a rates */ 383 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 384 385 /* set supported .11a channels */ 386 for (i = 34; i <= 46; i += 4) { 387 ic->ic_channels[i].ic_freq = 388 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 389 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 390 } 391 for (i = 36; i <= 64; i += 4) { 392 ic->ic_channels[i].ic_freq = 393 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 394 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 395 } 396 for (i = 100; i <= 140; i += 4) { 397 ic->ic_channels[i].ic_freq = 398 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 399 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 400 } 401 for (i = 149; i <= 165; i += 4) { 402 ic->ic_channels[i].ic_freq = 403 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 404 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 405 } 406 } 407 408 /* set supported .11b and .11g rates */ 409 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 410 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 411 412 /* set supported .11b and .11g channels (1 through 14) */ 413 for (i = 1; i <= 14; i++) { 414 ic->ic_channels[i].ic_freq = 415 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 416 ic->ic_channels[i].ic_flags = 417 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 418 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 419 } 420 421 ifp->if_softc = sc; 422 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 423 ifp->if_init = rum_init; 424 ifp->if_ioctl = rum_ioctl; 425 ifp->if_start = rum_start; 426 ifp->if_watchdog = rum_watchdog; 427 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 428 IFQ_SET_READY(&ifp->if_snd); 429 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 430 431 if_attach(ifp); 432 ieee80211_ifattach(ic); 433 434 /* override state transition machine */ 435 sc->sc_newstate = ic->ic_newstate; 436 ic->ic_newstate = rum_newstate; 437 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 438 439 #if NBPFILTER > 0 440 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 441 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 442 443 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 444 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 445 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 446 447 sc->sc_txtap_len = sizeof sc->sc_txtapu; 448 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 449 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 450 #endif 451 452 ieee80211_announce(ic); 453 454 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 455 USBDEV(sc->sc_dev)); 456 457 USB_ATTACH_SUCCESS_RETURN; 458 } 459 460 USB_DETACH(rum) 461 { 462 USB_DETACH_START(rum, sc); 463 struct ieee80211com *ic = &sc->sc_ic; 464 struct ifnet *ifp = &sc->sc_if; 465 int s; 466 467 s = splusb(); 468 469 rum_stop(ifp, 1); 470 usb_rem_task(sc->sc_udev, &sc->sc_task); 471 callout_stop(&sc->scan_ch); 472 callout_stop(&sc->amrr_ch); 473 474 if (sc->amrr_xfer != NULL) { 475 usbd_free_xfer(sc->amrr_xfer); 476 sc->amrr_xfer = NULL; 477 } 478 479 if (sc->sc_rx_pipeh != NULL) { 480 usbd_abort_pipe(sc->sc_rx_pipeh); 481 usbd_close_pipe(sc->sc_rx_pipeh); 482 } 483 484 if (sc->sc_tx_pipeh != NULL) { 485 usbd_abort_pipe(sc->sc_tx_pipeh); 486 usbd_close_pipe(sc->sc_tx_pipeh); 487 } 488 489 rum_free_rx_list(sc); 490 rum_free_tx_list(sc); 491 492 #if NBPFILTER > 0 493 bpfdetach(ifp); 494 #endif 495 ieee80211_ifdetach(ic); /* free all nodes */ 496 if_detach(ifp); 497 498 splx(s); 499 500 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 501 USBDEV(sc->sc_dev)); 502 503 return 0; 504 } 505 506 Static int 507 rum_alloc_tx_list(struct rum_softc *sc) 508 { 509 struct rum_tx_data *data; 510 int i, error; 511 512 sc->tx_queued = 0; 513 514 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 515 data = &sc->tx_data[i]; 516 517 data->sc = sc; 518 519 data->xfer = usbd_alloc_xfer(sc->sc_udev); 520 if (data->xfer == NULL) { 521 printf("%s: could not allocate tx xfer\n", 522 USBDEVNAME(sc->sc_dev)); 523 error = ENOMEM; 524 goto fail; 525 } 526 527 data->buf = usbd_alloc_buffer(data->xfer, 528 RT2573_TX_DESC_SIZE + MCLBYTES); 529 if (data->buf == NULL) { 530 printf("%s: could not allocate tx buffer\n", 531 USBDEVNAME(sc->sc_dev)); 532 error = ENOMEM; 533 goto fail; 534 } 535 536 /* clean Tx descriptor */ 537 bzero(data->buf, RT2573_TX_DESC_SIZE); 538 } 539 540 return 0; 541 542 fail: rum_free_tx_list(sc); 543 return error; 544 } 545 546 Static void 547 rum_free_tx_list(struct rum_softc *sc) 548 { 549 struct rum_tx_data *data; 550 int i; 551 552 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 553 data = &sc->tx_data[i]; 554 555 if (data->xfer != NULL) { 556 usbd_free_xfer(data->xfer); 557 data->xfer = NULL; 558 } 559 560 if (data->ni != NULL) { 561 ieee80211_free_node(data->ni); 562 data->ni = NULL; 563 } 564 } 565 } 566 567 Static int 568 rum_alloc_rx_list(struct rum_softc *sc) 569 { 570 struct rum_rx_data *data; 571 int i, error; 572 573 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 574 data = &sc->rx_data[i]; 575 576 data->sc = sc; 577 578 data->xfer = usbd_alloc_xfer(sc->sc_udev); 579 if (data->xfer == NULL) { 580 printf("%s: could not allocate rx xfer\n", 581 USBDEVNAME(sc->sc_dev)); 582 error = ENOMEM; 583 goto fail; 584 } 585 586 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 587 printf("%s: could not allocate rx buffer\n", 588 USBDEVNAME(sc->sc_dev)); 589 error = ENOMEM; 590 goto fail; 591 } 592 593 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 594 if (data->m == NULL) { 595 printf("%s: could not allocate rx mbuf\n", 596 USBDEVNAME(sc->sc_dev)); 597 error = ENOMEM; 598 goto fail; 599 } 600 601 MCLGET(data->m, M_DONTWAIT); 602 if (!(data->m->m_flags & M_EXT)) { 603 printf("%s: could not allocate rx mbuf cluster\n", 604 USBDEVNAME(sc->sc_dev)); 605 error = ENOMEM; 606 goto fail; 607 } 608 609 data->buf = mtod(data->m, uint8_t *); 610 } 611 612 return 0; 613 614 fail: rum_free_tx_list(sc); 615 return error; 616 } 617 618 Static void 619 rum_free_rx_list(struct rum_softc *sc) 620 { 621 struct rum_rx_data *data; 622 int i; 623 624 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 625 data = &sc->rx_data[i]; 626 627 if (data->xfer != NULL) { 628 usbd_free_xfer(data->xfer); 629 data->xfer = NULL; 630 } 631 632 if (data->m != NULL) { 633 m_freem(data->m); 634 data->m = NULL; 635 } 636 } 637 } 638 639 Static int 640 rum_media_change(struct ifnet *ifp) 641 { 642 int error; 643 644 error = ieee80211_media_change(ifp); 645 if (error != ENETRESET) 646 return error; 647 648 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 649 rum_init(ifp); 650 651 return 0; 652 } 653 654 /* 655 * This function is called periodically (every 200ms) during scanning to 656 * switch from one channel to another. 657 */ 658 Static void 659 rum_next_scan(void *arg) 660 { 661 struct rum_softc *sc = arg; 662 struct ieee80211com *ic = &sc->sc_ic; 663 664 if (ic->ic_state == IEEE80211_S_SCAN) 665 ieee80211_next_scan(ic); 666 } 667 668 Static void 669 rum_task(void *arg) 670 { 671 struct rum_softc *sc = arg; 672 struct ieee80211com *ic = &sc->sc_ic; 673 enum ieee80211_state ostate; 674 struct ieee80211_node *ni; 675 uint32_t tmp; 676 677 ostate = ic->ic_state; 678 679 switch (sc->sc_state) { 680 case IEEE80211_S_INIT: 681 if (ostate == IEEE80211_S_RUN) { 682 /* abort TSF synchronization */ 683 tmp = rum_read(sc, RT2573_TXRX_CSR9); 684 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 685 } 686 break; 687 688 case IEEE80211_S_SCAN: 689 rum_set_chan(sc, ic->ic_curchan); 690 callout_reset(&sc->scan_ch, hz / 5, rum_next_scan, sc); 691 break; 692 693 case IEEE80211_S_AUTH: 694 rum_set_chan(sc, ic->ic_curchan); 695 break; 696 697 case IEEE80211_S_ASSOC: 698 rum_set_chan(sc, ic->ic_curchan); 699 break; 700 701 case IEEE80211_S_RUN: 702 rum_set_chan(sc, ic->ic_curchan); 703 704 ni = ic->ic_bss; 705 706 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 707 rum_update_slot(sc); 708 rum_enable_mrr(sc); 709 rum_set_txpreamble(sc); 710 rum_set_basicrates(sc); 711 rum_set_bssid(sc, ni->ni_bssid); 712 } 713 714 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 715 ic->ic_opmode == IEEE80211_M_IBSS) 716 rum_prepare_beacon(sc); 717 718 if (ic->ic_opmode != IEEE80211_M_MONITOR) 719 rum_enable_tsf_sync(sc); 720 721 /* enable automatic rate adaptation in STA mode */ 722 if (ic->ic_opmode == IEEE80211_M_STA && 723 ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 724 rum_amrr_start(sc, ni); 725 726 break; 727 } 728 729 sc->sc_newstate(ic, sc->sc_state, -1); 730 } 731 732 Static int 733 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 734 { 735 struct rum_softc *sc = ic->ic_ifp->if_softc; 736 737 usb_rem_task(sc->sc_udev, &sc->sc_task); 738 callout_stop(&sc->scan_ch); 739 callout_stop(&sc->amrr_ch); 740 741 /* do it in a process context */ 742 sc->sc_state = nstate; 743 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 744 745 return 0; 746 } 747 748 /* quickly determine if a given rate is CCK or OFDM */ 749 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 750 751 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 752 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 753 754 Static void 755 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 756 { 757 struct rum_tx_data *data = priv; 758 struct rum_softc *sc = data->sc; 759 struct ifnet *ifp = &sc->sc_if; 760 int s; 761 762 if (status != USBD_NORMAL_COMPLETION) { 763 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 764 return; 765 766 printf("%s: could not transmit buffer: %s\n", 767 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 768 769 if (status == USBD_STALLED) 770 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 771 772 ifp->if_oerrors++; 773 return; 774 } 775 776 s = splnet(); 777 778 m_freem(data->m); 779 data->m = NULL; 780 ieee80211_free_node(data->ni); 781 data->ni = NULL; 782 783 sc->tx_queued--; 784 ifp->if_opackets++; 785 786 DPRINTFN(10, ("tx done\n")); 787 788 sc->sc_tx_timer = 0; 789 ifp->if_flags &= ~IFF_OACTIVE; 790 rum_start(ifp); 791 792 splx(s); 793 } 794 795 Static void 796 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 797 { 798 struct rum_rx_data *data = priv; 799 struct rum_softc *sc = data->sc; 800 struct ieee80211com *ic = &sc->sc_ic; 801 struct ifnet *ifp = &sc->sc_if; 802 struct rum_rx_desc *desc; 803 struct ieee80211_frame *wh; 804 struct ieee80211_node *ni; 805 struct mbuf *mnew, *m; 806 int s, len; 807 808 if (status != USBD_NORMAL_COMPLETION) { 809 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 810 return; 811 812 if (status == USBD_STALLED) 813 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 814 goto skip; 815 } 816 817 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 818 819 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 820 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 821 len)); 822 ifp->if_ierrors++; 823 goto skip; 824 } 825 826 desc = (struct rum_rx_desc *)data->buf; 827 828 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 829 /* 830 * This should not happen since we did not request to receive 831 * those frames when we filled RT2573_TXRX_CSR0. 832 */ 833 DPRINTFN(5, ("CRC error\n")); 834 ifp->if_ierrors++; 835 goto skip; 836 } 837 838 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 839 if (mnew == NULL) { 840 printf("%s: could not allocate rx mbuf\n", 841 USBDEVNAME(sc->sc_dev)); 842 ifp->if_ierrors++; 843 goto skip; 844 } 845 846 MCLGET(mnew, M_DONTWAIT); 847 if (!(mnew->m_flags & M_EXT)) { 848 printf("%s: could not allocate rx mbuf cluster\n", 849 USBDEVNAME(sc->sc_dev)); 850 m_freem(mnew); 851 ifp->if_ierrors++; 852 goto skip; 853 } 854 855 m = data->m; 856 data->m = mnew; 857 data->buf = mtod(data->m, uint8_t *); 858 859 /* finalize mbuf */ 860 m->m_pkthdr.rcvif = ifp; 861 m->m_data = (caddr_t)(desc + 1); 862 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 863 864 s = splnet(); 865 866 #if NBPFILTER > 0 867 if (sc->sc_drvbpf != NULL) { 868 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 869 870 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 871 tap->wr_rate = rum_rxrate(desc); 872 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 873 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 874 tap->wr_antenna = sc->rx_ant; 875 tap->wr_antsignal = desc->rssi; 876 877 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 878 } 879 #endif 880 881 wh = mtod(m, struct ieee80211_frame *); 882 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 883 884 /* send the frame to the 802.11 layer */ 885 ieee80211_input(ic, m, ni, desc->rssi, 0); 886 887 /* node is no longer needed */ 888 ieee80211_free_node(ni); 889 890 splx(s); 891 892 DPRINTFN(15, ("rx done\n")); 893 894 skip: /* setup a new transfer */ 895 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 896 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 897 usbd_transfer(xfer); 898 } 899 900 /* 901 * This function is only used by the Rx radiotap code. It returns the rate at 902 * which a given frame was received. 903 */ 904 #if NBPFILTER > 0 905 Static uint8_t 906 rum_rxrate(struct rum_rx_desc *desc) 907 { 908 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 909 /* reverse function of rum_plcp_signal */ 910 switch (desc->rate) { 911 case 0xb: return 12; 912 case 0xf: return 18; 913 case 0xa: return 24; 914 case 0xe: return 36; 915 case 0x9: return 48; 916 case 0xd: return 72; 917 case 0x8: return 96; 918 case 0xc: return 108; 919 } 920 } else { 921 if (desc->rate == 10) 922 return 2; 923 if (desc->rate == 20) 924 return 4; 925 if (desc->rate == 55) 926 return 11; 927 if (desc->rate == 110) 928 return 22; 929 } 930 return 2; /* should not get there */ 931 } 932 #endif 933 934 /* 935 * Return the expected ack rate for a frame transmitted at rate `rate'. 936 * XXX: this should depend on the destination node basic rate set. 937 */ 938 Static int 939 rum_ack_rate(struct ieee80211com *ic, int rate) 940 { 941 switch (rate) { 942 /* CCK rates */ 943 case 2: 944 return 2; 945 case 4: 946 case 11: 947 case 22: 948 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 949 950 /* OFDM rates */ 951 case 12: 952 case 18: 953 return 12; 954 case 24: 955 case 36: 956 return 24; 957 case 48: 958 case 72: 959 case 96: 960 case 108: 961 return 48; 962 } 963 964 /* default to 1Mbps */ 965 return 2; 966 } 967 968 /* 969 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 970 * The function automatically determines the operating mode depending on the 971 * given rate. `flags' indicates whether short preamble is in use or not. 972 */ 973 Static uint16_t 974 rum_txtime(int len, int rate, uint32_t flags) 975 { 976 uint16_t txtime; 977 978 if (RUM_RATE_IS_OFDM(rate)) { 979 /* IEEE Std 802.11a-1999, pp. 37 */ 980 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 981 txtime = 16 + 4 + 4 * txtime + 6; 982 } else { 983 /* IEEE Std 802.11b-1999, pp. 28 */ 984 txtime = (16 * len + rate - 1) / rate; 985 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 986 txtime += 72 + 24; 987 else 988 txtime += 144 + 48; 989 } 990 return txtime; 991 } 992 993 Static uint8_t 994 rum_plcp_signal(int rate) 995 { 996 switch (rate) { 997 /* CCK rates (returned values are device-dependent) */ 998 case 2: return 0x0; 999 case 4: return 0x1; 1000 case 11: return 0x2; 1001 case 22: return 0x3; 1002 1003 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1004 case 12: return 0xb; 1005 case 18: return 0xf; 1006 case 24: return 0xa; 1007 case 36: return 0xe; 1008 case 48: return 0x9; 1009 case 72: return 0xd; 1010 case 96: return 0x8; 1011 case 108: return 0xc; 1012 1013 /* unsupported rates (should not get there) */ 1014 default: return 0xff; 1015 } 1016 } 1017 1018 Static void 1019 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1020 uint32_t flags, uint16_t xflags, int len, int rate) 1021 { 1022 struct ieee80211com *ic = &sc->sc_ic; 1023 uint16_t plcp_length; 1024 int remainder; 1025 1026 desc->flags = htole32(flags); 1027 desc->flags |= htole32(RT2573_TX_VALID); 1028 desc->flags |= htole32(len << 16); 1029 1030 desc->xflags = htole16(xflags); 1031 1032 desc->wme = htole16( 1033 RT2573_QID(0) | 1034 RT2573_AIFSN(2) | 1035 RT2573_LOGCWMIN(4) | 1036 RT2573_LOGCWMAX(10)); 1037 1038 /* setup PLCP fields */ 1039 desc->plcp_signal = rum_plcp_signal(rate); 1040 desc->plcp_service = 4; 1041 1042 len += IEEE80211_CRC_LEN; 1043 if (RUM_RATE_IS_OFDM(rate)) { 1044 desc->flags |= htole32(RT2573_TX_OFDM); 1045 1046 plcp_length = len & 0xfff; 1047 desc->plcp_length_hi = plcp_length >> 6; 1048 desc->plcp_length_lo = plcp_length & 0x3f; 1049 } else { 1050 plcp_length = (16 * len + rate - 1) / rate; 1051 if (rate == 22) { 1052 remainder = (16 * len) % 22; 1053 if (remainder != 0 && remainder < 7) 1054 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1055 } 1056 desc->plcp_length_hi = plcp_length >> 8; 1057 desc->plcp_length_lo = plcp_length & 0xff; 1058 1059 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1060 desc->plcp_signal |= 0x08; 1061 } 1062 } 1063 1064 #define RUM_TX_TIMEOUT 5000 1065 1066 Static int 1067 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1068 { 1069 struct ieee80211com *ic = &sc->sc_ic; 1070 struct rum_tx_desc *desc; 1071 struct rum_tx_data *data; 1072 struct ieee80211_frame *wh; 1073 uint32_t flags = 0; 1074 uint16_t dur; 1075 usbd_status error; 1076 int xferlen, rate; 1077 1078 data = &sc->tx_data[0]; 1079 desc = (struct rum_tx_desc *)data->buf; 1080 1081 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 1082 1083 data->m = m0; 1084 data->ni = ni; 1085 1086 wh = mtod(m0, struct ieee80211_frame *); 1087 1088 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1089 flags |= RT2573_TX_ACK; 1090 1091 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1092 ic->ic_flags) + sc->sifs; 1093 *(uint16_t *)wh->i_dur = htole16(dur); 1094 1095 /* tell hardware to set timestamp in probe responses */ 1096 if ((wh->i_fc[0] & 1097 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1098 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1099 flags |= RT2573_TX_TIMESTAMP; 1100 } 1101 1102 #if NBPFILTER > 0 1103 if (sc->sc_drvbpf != NULL) { 1104 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1105 1106 tap->wt_flags = 0; 1107 tap->wt_rate = rate; 1108 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1109 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1110 tap->wt_antenna = sc->tx_ant; 1111 1112 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1113 } 1114 #endif 1115 1116 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1117 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1118 1119 /* align end on a 4-bytes boundary */ 1120 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1121 1122 /* 1123 * No space left in the last URB to store the extra 4 bytes, force 1124 * sending of another URB. 1125 */ 1126 if ((xferlen % 64) == 0) 1127 xferlen += 4; 1128 1129 DPRINTFN(10, ("sending msg frame len=%u rate=%u xfer len=%u\n", 1130 m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, rate, xferlen)); 1131 1132 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1133 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1134 1135 error = usbd_transfer(data->xfer); 1136 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1137 m_freem(m0); 1138 return error; 1139 } 1140 1141 sc->tx_queued++; 1142 1143 return 0; 1144 } 1145 1146 Static int 1147 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1148 { 1149 struct ieee80211com *ic = &sc->sc_ic; 1150 struct rum_tx_desc *desc; 1151 struct rum_tx_data *data; 1152 struct ieee80211_frame *wh; 1153 struct ieee80211_key *k; 1154 uint32_t flags = 0; 1155 uint16_t dur; 1156 usbd_status error; 1157 int xferlen, rate; 1158 1159 wh = mtod(m0, struct ieee80211_frame *); 1160 1161 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1162 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1163 else 1164 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1165 rate &= IEEE80211_RATE_VAL; 1166 1167 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1168 k = ieee80211_crypto_encap(ic, ni, m0); 1169 if (k == NULL) { 1170 m_freem(m0); 1171 return ENOBUFS; 1172 } 1173 1174 /* packet header may have moved, reset our local pointer */ 1175 wh = mtod(m0, struct ieee80211_frame *); 1176 } 1177 1178 data = &sc->tx_data[0]; 1179 desc = (struct rum_tx_desc *)data->buf; 1180 1181 data->m = m0; 1182 data->ni = ni; 1183 1184 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1185 flags |= RT2573_TX_ACK; 1186 1187 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1188 ic->ic_flags) + sc->sifs; 1189 *(uint16_t *)wh->i_dur = htole16(dur); 1190 } 1191 1192 #if NBPFILTER > 0 1193 if (sc->sc_drvbpf != NULL) { 1194 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1195 1196 tap->wt_flags = 0; 1197 tap->wt_rate = rate; 1198 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1199 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1200 tap->wt_antenna = sc->tx_ant; 1201 1202 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1203 } 1204 #endif 1205 1206 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1207 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1208 1209 /* align end on a 4-bytes boundary */ 1210 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1211 1212 /* 1213 * No space left in the last URB to store the extra 4 bytes, force 1214 * sending of another URB. 1215 */ 1216 if ((xferlen % 64) == 0) 1217 xferlen += 4; 1218 1219 DPRINTFN(10, ("sending data frame len=%u rate=%u xfer len=%u\n", 1220 m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, rate, xferlen)); 1221 1222 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1223 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1224 1225 error = usbd_transfer(data->xfer); 1226 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1227 m_freem(m0); 1228 return error; 1229 } 1230 1231 sc->tx_queued++; 1232 1233 return 0; 1234 } 1235 1236 Static void 1237 rum_start(struct ifnet *ifp) 1238 { 1239 struct rum_softc *sc = ifp->if_softc; 1240 struct ieee80211com *ic = &sc->sc_ic; 1241 struct ether_header *eh; 1242 struct ieee80211_node *ni; 1243 struct mbuf *m0; 1244 1245 for (;;) { 1246 IF_POLL(&ic->ic_mgtq, m0); 1247 if (m0 != NULL) { 1248 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1249 ifp->if_flags |= IFF_OACTIVE; 1250 break; 1251 } 1252 IF_DEQUEUE(&ic->ic_mgtq, m0); 1253 1254 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1255 m0->m_pkthdr.rcvif = NULL; 1256 #if NBPFILTER > 0 1257 if (ic->ic_rawbpf != NULL) 1258 bpf_mtap(ic->ic_rawbpf, m0); 1259 #endif 1260 if (rum_tx_mgt(sc, m0, ni) != 0) 1261 break; 1262 1263 } else { 1264 if (ic->ic_state != IEEE80211_S_RUN) 1265 break; 1266 IFQ_POLL(&ifp->if_snd, m0); 1267 if (m0 == NULL) 1268 break; 1269 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1270 ifp->if_flags |= IFF_OACTIVE; 1271 break; 1272 } 1273 IFQ_DEQUEUE(&ifp->if_snd, m0); 1274 if (m0->m_len < sizeof(struct ether_header) && 1275 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1276 continue; 1277 1278 eh = mtod(m0, struct ether_header *); 1279 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1280 if (ni == NULL) { 1281 m_freem(m0); 1282 continue; 1283 } 1284 #if NBPFILTER > 0 1285 if (ifp->if_bpf != NULL) 1286 bpf_mtap(ifp->if_bpf, m0); 1287 #endif 1288 m0 = ieee80211_encap(ic, m0, ni); 1289 if (m0 == NULL) { 1290 ieee80211_free_node(ni); 1291 continue; 1292 } 1293 #if NBPFILTER > 0 1294 if (ic->ic_rawbpf != NULL) 1295 bpf_mtap(ic->ic_rawbpf, m0); 1296 #endif 1297 if (rum_tx_data(sc, m0, ni) != 0) { 1298 ieee80211_free_node(ni); 1299 ifp->if_oerrors++; 1300 break; 1301 } 1302 } 1303 1304 sc->sc_tx_timer = 5; 1305 ifp->if_timer = 1; 1306 } 1307 } 1308 1309 Static void 1310 rum_watchdog(struct ifnet *ifp) 1311 { 1312 struct rum_softc *sc = ifp->if_softc; 1313 struct ieee80211com *ic = &sc->sc_ic; 1314 1315 ifp->if_timer = 0; 1316 1317 if (sc->sc_tx_timer > 0) { 1318 if (--sc->sc_tx_timer == 0) { 1319 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1320 /*rum_init(ifp); XXX needs a process context! */ 1321 ifp->if_oerrors++; 1322 return; 1323 } 1324 ifp->if_timer = 1; 1325 } 1326 1327 ieee80211_watchdog(ic); 1328 } 1329 1330 Static int 1331 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1332 { 1333 struct rum_softc *sc = ifp->if_softc; 1334 struct ieee80211com *ic = &sc->sc_ic; 1335 int s, error = 0; 1336 1337 s = splnet(); 1338 1339 switch (cmd) { 1340 case SIOCSIFFLAGS: 1341 if (ifp->if_flags & IFF_UP) { 1342 if (ifp->if_flags & IFF_RUNNING) 1343 rum_update_promisc(sc); 1344 else 1345 rum_init(ifp); 1346 } else { 1347 if (ifp->if_flags & IFF_RUNNING) 1348 rum_stop(ifp, 1); 1349 } 1350 break; 1351 1352 default: 1353 error = ieee80211_ioctl(ic, cmd, data); 1354 } 1355 1356 if (error == ENETRESET) { 1357 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1358 (IFF_UP | IFF_RUNNING)) 1359 rum_init(ifp); 1360 error = 0; 1361 } 1362 1363 splx(s); 1364 1365 return error; 1366 } 1367 1368 Static void 1369 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1370 { 1371 usb_device_request_t req; 1372 usbd_status error; 1373 1374 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1375 req.bRequest = RT2573_READ_EEPROM; 1376 USETW(req.wValue, 0); 1377 USETW(req.wIndex, addr); 1378 USETW(req.wLength, len); 1379 1380 error = usbd_do_request(sc->sc_udev, &req, buf); 1381 if (error != 0) { 1382 printf("%s: could not read EEPROM: %s\n", 1383 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1384 } 1385 } 1386 1387 Static uint32_t 1388 rum_read(struct rum_softc *sc, uint16_t reg) 1389 { 1390 uint32_t val; 1391 1392 rum_read_multi(sc, reg, &val, sizeof val); 1393 1394 return le32toh(val); 1395 } 1396 1397 Static void 1398 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1399 { 1400 usb_device_request_t req; 1401 usbd_status error; 1402 1403 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1404 req.bRequest = RT2573_READ_MULTI_MAC; 1405 USETW(req.wValue, 0); 1406 USETW(req.wIndex, reg); 1407 USETW(req.wLength, len); 1408 1409 error = usbd_do_request(sc->sc_udev, &req, buf); 1410 if (error != 0) { 1411 printf("%s: could not multi read MAC register: %s\n", 1412 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1413 } 1414 } 1415 1416 Static void 1417 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1418 { 1419 uint32_t tmp = htole32(val); 1420 1421 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1422 } 1423 1424 Static void 1425 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1426 { 1427 usb_device_request_t req; 1428 usbd_status error; 1429 1430 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1431 req.bRequest = RT2573_WRITE_MULTI_MAC; 1432 USETW(req.wValue, 0); 1433 USETW(req.wIndex, reg); 1434 USETW(req.wLength, len); 1435 1436 error = usbd_do_request(sc->sc_udev, &req, buf); 1437 if (error != 0) { 1438 printf("%s: could not multi write MAC register: %s\n", 1439 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1440 } 1441 } 1442 1443 Static void 1444 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1445 { 1446 uint32_t tmp; 1447 int ntries; 1448 1449 for (ntries = 0; ntries < 5; ntries++) { 1450 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1451 break; 1452 } 1453 if (ntries == 5) { 1454 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1455 return; 1456 } 1457 1458 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1459 rum_write(sc, RT2573_PHY_CSR3, tmp); 1460 } 1461 1462 Static uint8_t 1463 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1464 { 1465 uint32_t val; 1466 int ntries; 1467 1468 for (ntries = 0; ntries < 5; ntries++) { 1469 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1470 break; 1471 } 1472 if (ntries == 5) { 1473 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1474 return 0; 1475 } 1476 1477 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1478 rum_write(sc, RT2573_PHY_CSR3, val); 1479 1480 for (ntries = 0; ntries < 100; ntries++) { 1481 val = rum_read(sc, RT2573_PHY_CSR3); 1482 if (!(val & RT2573_BBP_BUSY)) 1483 return val & 0xff; 1484 DELAY(1); 1485 } 1486 1487 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1488 return 0; 1489 } 1490 1491 Static void 1492 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1493 { 1494 uint32_t tmp; 1495 int ntries; 1496 1497 for (ntries = 0; ntries < 5; ntries++) { 1498 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1499 break; 1500 } 1501 if (ntries == 5) { 1502 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1503 return; 1504 } 1505 1506 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1507 (reg & 3); 1508 rum_write(sc, RT2573_PHY_CSR4, tmp); 1509 1510 /* remember last written value in sc */ 1511 sc->rf_regs[reg] = val; 1512 1513 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1514 } 1515 1516 Static void 1517 rum_select_antenna(struct rum_softc *sc) 1518 { 1519 uint8_t bbp4, bbp77; 1520 uint32_t tmp; 1521 1522 bbp4 = rum_bbp_read(sc, 4); 1523 bbp77 = rum_bbp_read(sc, 77); 1524 1525 /* TBD */ 1526 1527 /* make sure Rx is disabled before switching antenna */ 1528 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1529 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1530 1531 rum_bbp_write(sc, 4, bbp4); 1532 rum_bbp_write(sc, 77, bbp77); 1533 1534 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1535 } 1536 1537 /* 1538 * Enable multi-rate retries for frames sent at OFDM rates. 1539 * In 802.11b/g mode, allow fallback to CCK rates. 1540 */ 1541 Static void 1542 rum_enable_mrr(struct rum_softc *sc) 1543 { 1544 struct ieee80211com *ic = &sc->sc_ic; 1545 uint32_t tmp; 1546 1547 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1548 1549 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1550 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1551 tmp |= RT2573_MRR_CCK_FALLBACK; 1552 tmp |= RT2573_MRR_ENABLED; 1553 1554 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1555 } 1556 1557 Static void 1558 rum_set_txpreamble(struct rum_softc *sc) 1559 { 1560 uint32_t tmp; 1561 1562 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1563 1564 tmp &= ~RT2573_SHORT_PREAMBLE; 1565 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1566 tmp |= RT2573_SHORT_PREAMBLE; 1567 1568 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1569 } 1570 1571 Static void 1572 rum_set_basicrates(struct rum_softc *sc) 1573 { 1574 struct ieee80211com *ic = &sc->sc_ic; 1575 1576 /* update basic rate set */ 1577 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1578 /* 11b basic rates: 1, 2Mbps */ 1579 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1580 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { 1581 /* 11a basic rates: 6, 12, 24Mbps */ 1582 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1583 } else { 1584 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 1585 rum_write(sc, RT2573_TXRX_CSR5, 0x15f); 1586 } 1587 } 1588 1589 /* 1590 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1591 * driver. 1592 */ 1593 Static void 1594 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1595 { 1596 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1597 uint32_t tmp; 1598 1599 /* update all BBP registers that depend on the band */ 1600 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1601 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1602 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1603 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1604 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1605 } 1606 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1607 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1608 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1609 } 1610 1611 sc->bbp17 = bbp17; 1612 rum_bbp_write(sc, 17, bbp17); 1613 rum_bbp_write(sc, 96, bbp96); 1614 rum_bbp_write(sc, 104, bbp104); 1615 1616 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1617 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1618 rum_bbp_write(sc, 75, 0x80); 1619 rum_bbp_write(sc, 86, 0x80); 1620 rum_bbp_write(sc, 88, 0x80); 1621 } 1622 1623 rum_bbp_write(sc, 35, bbp35); 1624 rum_bbp_write(sc, 97, bbp97); 1625 rum_bbp_write(sc, 98, bbp98); 1626 1627 tmp = rum_read(sc, RT2573_PHY_CSR0); 1628 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1629 if (IEEE80211_IS_CHAN_2GHZ(c)) 1630 tmp |= RT2573_PA_PE_2GHZ; 1631 else 1632 tmp |= RT2573_PA_PE_5GHZ; 1633 rum_write(sc, RT2573_PHY_CSR0, tmp); 1634 1635 /* 802.11a uses a 16 microseconds short interframe space */ 1636 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1637 } 1638 1639 Static void 1640 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1641 { 1642 struct ieee80211com *ic = &sc->sc_ic; 1643 const struct rfprog *rfprog; 1644 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1645 int8_t power; 1646 u_int i, chan; 1647 1648 chan = ieee80211_chan2ieee(ic, c); 1649 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1650 return; 1651 1652 /* select the appropriate RF settings based on what EEPROM says */ 1653 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1654 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1655 1656 /* find the settings for this channel (we know it exists) */ 1657 for (i = 0; rfprog[i].chan != chan; i++); 1658 1659 power = sc->txpow[i]; 1660 if (power < 0) { 1661 bbp94 += power; 1662 power = 0; 1663 } else if (power > 31) { 1664 bbp94 += power - 31; 1665 power = 31; 1666 } 1667 1668 /* 1669 * If we are switching from the 2GHz band to the 5GHz band or 1670 * vice-versa, BBP registers need to be reprogrammed. 1671 */ 1672 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1673 rum_select_band(sc, c); 1674 rum_select_antenna(sc); 1675 } 1676 ic->ic_curchan = c; 1677 1678 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1679 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1680 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1681 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1682 1683 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1684 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1685 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1686 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1687 1688 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1689 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1690 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1691 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1692 1693 DELAY(10); 1694 1695 /* enable smart mode for MIMO-capable RFs */ 1696 bbp3 = rum_bbp_read(sc, 3); 1697 1698 bbp3 &= ~RT2573_SMART_MODE; 1699 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1700 bbp3 |= RT2573_SMART_MODE; 1701 1702 rum_bbp_write(sc, 3, bbp3); 1703 1704 if (bbp94 != RT2573_BBPR94_DEFAULT) 1705 rum_bbp_write(sc, 94, bbp94); 1706 } 1707 1708 /* 1709 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1710 * and HostAP operating modes. 1711 */ 1712 Static void 1713 rum_enable_tsf_sync(struct rum_softc *sc) 1714 { 1715 struct ieee80211com *ic = &sc->sc_ic; 1716 uint32_t tmp; 1717 1718 if (ic->ic_opmode != IEEE80211_M_STA) { 1719 /* 1720 * Change default 16ms TBTT adjustment to 8ms. 1721 * Must be done before enabling beacon generation. 1722 */ 1723 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1724 } 1725 1726 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1727 1728 /* set beacon interval (in 1/16ms unit) */ 1729 tmp |= ic->ic_bss->ni_intval * 16; 1730 1731 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1732 if (ic->ic_opmode == IEEE80211_M_STA) 1733 tmp |= RT2573_TSF_MODE(1); 1734 else 1735 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1736 1737 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1738 } 1739 1740 Static void 1741 rum_update_slot(struct rum_softc *sc) 1742 { 1743 struct ieee80211com *ic = &sc->sc_ic; 1744 uint8_t slottime; 1745 uint32_t tmp; 1746 1747 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1748 1749 tmp = rum_read(sc, RT2573_MAC_CSR9); 1750 tmp = (tmp & ~0xff) | slottime; 1751 rum_write(sc, RT2573_MAC_CSR9, tmp); 1752 1753 DPRINTF(("setting slot time to %uus\n", slottime)); 1754 } 1755 1756 Static void 1757 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1758 { 1759 uint32_t tmp; 1760 1761 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1762 rum_write(sc, RT2573_MAC_CSR4, tmp); 1763 1764 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1765 rum_write(sc, RT2573_MAC_CSR5, tmp); 1766 } 1767 1768 Static void 1769 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1770 { 1771 uint32_t tmp; 1772 1773 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1774 rum_write(sc, RT2573_MAC_CSR2, tmp); 1775 1776 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1777 rum_write(sc, RT2573_MAC_CSR3, tmp); 1778 } 1779 1780 Static void 1781 rum_update_promisc(struct rum_softc *sc) 1782 { 1783 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1784 uint32_t tmp; 1785 1786 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1787 1788 tmp &= ~RT2573_DROP_NOT_TO_ME; 1789 if (!(ifp->if_flags & IFF_PROMISC)) 1790 tmp |= RT2573_DROP_NOT_TO_ME; 1791 1792 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1793 1794 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1795 "entering" : "leaving")); 1796 } 1797 1798 Static const char * 1799 rum_get_rf(int rev) 1800 { 1801 switch (rev) { 1802 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1803 case RT2573_RF_2528: return "RT2528"; 1804 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1805 case RT2573_RF_5226: return "RT5226"; 1806 default: return "unknown"; 1807 } 1808 } 1809 1810 Static void 1811 rum_read_eeprom(struct rum_softc *sc) 1812 { 1813 struct ieee80211com *ic = &sc->sc_ic; 1814 uint16_t val; 1815 #ifdef RUM_DEBUG 1816 int i; 1817 #endif 1818 1819 /* read MAC/BBP type */ 1820 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1821 sc->macbbp_rev = le16toh(val); 1822 1823 /* read MAC address */ 1824 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1825 1826 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1827 val = le16toh(val); 1828 sc->rf_rev = (val >> 11) & 0x1f; 1829 sc->hw_radio = (val >> 10) & 0x1; 1830 sc->rx_ant = (val >> 4) & 0x3; 1831 sc->tx_ant = (val >> 2) & 0x3; 1832 sc->nb_ant = val & 0x3; 1833 1834 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1835 1836 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1837 val = le16toh(val); 1838 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1839 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1840 1841 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1842 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1843 1844 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1845 val = le16toh(val); 1846 if ((val & 0xff) != 0xff) 1847 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1848 1849 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1850 val = le16toh(val); 1851 if ((val & 0xff) != 0xff) 1852 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1853 1854 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1855 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1856 1857 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1858 val = le16toh(val); 1859 if ((val & 0xff) != 0xff) 1860 sc->rffreq = val & 0xff; 1861 1862 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1863 1864 /* read Tx power for all a/b/g channels */ 1865 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1866 /* XXX default Tx power for 802.11a channels */ 1867 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1868 #ifdef RUM_DEBUG 1869 for (i = 0; i < 14; i++) 1870 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1871 #endif 1872 1873 /* read default values for BBP registers */ 1874 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1875 #ifdef RUM_DEBUG 1876 for (i = 0; i < 14; i++) { 1877 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1878 continue; 1879 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1880 sc->bbp_prom[i].val)); 1881 } 1882 #endif 1883 } 1884 1885 Static int 1886 rum_bbp_init(struct rum_softc *sc) 1887 { 1888 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1889 int i, ntries; 1890 uint8_t val; 1891 1892 /* wait for BBP to be ready */ 1893 for (ntries = 0; ntries < 100; ntries++) { 1894 val = rum_bbp_read(sc, 0); 1895 if (val != 0 && val != 0xff) 1896 break; 1897 DELAY(1000); 1898 } 1899 if (ntries == 100) { 1900 printf("%s: timeout waiting for BBP\n", 1901 USBDEVNAME(sc->sc_dev)); 1902 return EIO; 1903 } 1904 1905 /* initialize BBP registers to default values */ 1906 for (i = 0; i < N(rum_def_bbp); i++) 1907 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1908 1909 /* write vendor-specific BBP values (from EEPROM) */ 1910 for (i = 0; i < 16; i++) { 1911 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1912 continue; 1913 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1914 } 1915 1916 return 0; 1917 #undef N 1918 } 1919 1920 Static int 1921 rum_init(struct ifnet *ifp) 1922 { 1923 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1924 struct rum_softc *sc = ifp->if_softc; 1925 struct ieee80211com *ic = &sc->sc_ic; 1926 struct rum_rx_data *data; 1927 uint32_t tmp; 1928 usbd_status error = 0; 1929 int i, ntries; 1930 1931 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1932 if (rum_attachhook(sc)) 1933 goto fail; 1934 } 1935 1936 rum_stop(ifp, 0); 1937 1938 /* initialize MAC registers to default values */ 1939 for (i = 0; i < N(rum_def_mac); i++) 1940 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1941 1942 /* set host ready */ 1943 rum_write(sc, RT2573_MAC_CSR1, 3); 1944 rum_write(sc, RT2573_MAC_CSR1, 0); 1945 1946 /* wait for BBP/RF to wakeup */ 1947 for (ntries = 0; ntries < 1000; ntries++) { 1948 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1949 break; 1950 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1951 DELAY(1000); 1952 } 1953 if (ntries == 1000) { 1954 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1955 USBDEVNAME(sc->sc_dev)); 1956 goto fail; 1957 } 1958 1959 if ((error = rum_bbp_init(sc)) != 0) 1960 goto fail; 1961 1962 /* select default channel */ 1963 rum_select_band(sc, ic->ic_curchan); 1964 rum_select_antenna(sc); 1965 rum_set_chan(sc, ic->ic_curchan); 1966 1967 /* clear STA registers */ 1968 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 1969 1970 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1971 rum_set_macaddr(sc, ic->ic_myaddr); 1972 1973 /* initialize ASIC */ 1974 rum_write(sc, RT2573_MAC_CSR1, 4); 1975 1976 /* 1977 * Allocate xfer for AMRR statistics requests. 1978 */ 1979 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 1980 if (sc->amrr_xfer == NULL) { 1981 printf("%s: could not allocate AMRR xfer\n", 1982 USBDEVNAME(sc->sc_dev)); 1983 goto fail; 1984 } 1985 1986 /* 1987 * Open Tx and Rx USB bulk pipes. 1988 */ 1989 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 1990 &sc->sc_tx_pipeh); 1991 if (error != 0) { 1992 printf("%s: could not open Tx pipe: %s\n", 1993 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1994 goto fail; 1995 } 1996 1997 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 1998 &sc->sc_rx_pipeh); 1999 if (error != 0) { 2000 printf("%s: could not open Rx pipe: %s\n", 2001 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2002 goto fail; 2003 } 2004 2005 /* 2006 * Allocate Tx and Rx xfer queues. 2007 */ 2008 error = rum_alloc_tx_list(sc); 2009 if (error != 0) { 2010 printf("%s: could not allocate Tx list\n", 2011 USBDEVNAME(sc->sc_dev)); 2012 goto fail; 2013 } 2014 2015 error = rum_alloc_rx_list(sc); 2016 if (error != 0) { 2017 printf("%s: could not allocate Rx list\n", 2018 USBDEVNAME(sc->sc_dev)); 2019 goto fail; 2020 } 2021 2022 /* 2023 * Start up the receive pipe. 2024 */ 2025 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 2026 data = &sc->rx_data[i]; 2027 2028 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2029 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2030 usbd_transfer(data->xfer); 2031 } 2032 2033 /* update Rx filter */ 2034 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2035 2036 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2037 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2038 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2039 RT2573_DROP_ACKCTS; 2040 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2041 tmp |= RT2573_DROP_TODS; 2042 if (!(ifp->if_flags & IFF_PROMISC)) 2043 tmp |= RT2573_DROP_NOT_TO_ME; 2044 } 2045 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2046 2047 ifp->if_flags &= ~IFF_OACTIVE; 2048 ifp->if_flags |= IFF_RUNNING; 2049 2050 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2051 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2052 else 2053 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2054 2055 return 0; 2056 2057 fail: rum_stop(ifp, 1); 2058 return error; 2059 #undef N 2060 } 2061 2062 Static void 2063 rum_stop(struct ifnet *ifp, int disable) 2064 { 2065 struct rum_softc *sc = ifp->if_softc; 2066 struct ieee80211com *ic = &sc->sc_ic; 2067 uint32_t tmp; 2068 2069 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2070 2071 sc->sc_tx_timer = 0; 2072 ifp->if_timer = 0; 2073 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2074 2075 /* disable Rx */ 2076 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2077 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2078 2079 /* reset ASIC */ 2080 rum_write(sc, RT2573_MAC_CSR1, 3); 2081 rum_write(sc, RT2573_MAC_CSR1, 0); 2082 2083 if (sc->sc_rx_pipeh != NULL) { 2084 usbd_abort_pipe(sc->sc_rx_pipeh); 2085 usbd_close_pipe(sc->sc_rx_pipeh); 2086 sc->sc_rx_pipeh = NULL; 2087 } 2088 2089 if (sc->sc_tx_pipeh != NULL) { 2090 usbd_abort_pipe(sc->sc_tx_pipeh); 2091 usbd_close_pipe(sc->sc_tx_pipeh); 2092 sc->sc_tx_pipeh = NULL; 2093 } 2094 2095 rum_free_rx_list(sc); 2096 rum_free_tx_list(sc); 2097 } 2098 2099 Static int 2100 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2101 { 2102 usb_device_request_t req; 2103 uint16_t reg = RT2573_MCU_CODE_BASE; 2104 usbd_status error; 2105 2106 /* copy firmware image into NIC */ 2107 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2108 rum_write(sc, reg, UGETDW(ucode)); 2109 2110 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2111 req.bRequest = RT2573_MCU_CNTL; 2112 USETW(req.wValue, RT2573_MCU_RUN); 2113 USETW(req.wIndex, 0); 2114 USETW(req.wLength, 0); 2115 2116 error = usbd_do_request(sc->sc_udev, &req, NULL); 2117 if (error != 0) { 2118 printf("%s: could not run firmware: %s\n", 2119 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2120 } 2121 return error; 2122 } 2123 2124 Static int 2125 rum_prepare_beacon(struct rum_softc *sc) 2126 { 2127 struct ieee80211com *ic = &sc->sc_ic; 2128 struct rum_tx_desc desc; 2129 struct mbuf *m0; 2130 int rate; 2131 2132 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2133 if (m0 == NULL) { 2134 printf("%s: could not allocate beacon frame\n", 2135 sc->sc_dev.dv_xname); 2136 return ENOBUFS; 2137 } 2138 2139 /* send beacons at the lowest available rate */ 2140 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2141 2142 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2143 m0->m_pkthdr.len, rate); 2144 2145 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2146 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2147 2148 /* copy beacon header and payload into NIC memory */ 2149 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2150 m0->m_pkthdr.len); 2151 2152 m_freem(m0); 2153 2154 return 0; 2155 } 2156 2157 Static void 2158 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2159 { 2160 int i; 2161 2162 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2163 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2164 2165 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2166 2167 /* set rate to some reasonable initial value */ 2168 for (i = ni->ni_rates.rs_nrates - 1; 2169 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2170 i--); 2171 ni->ni_txrate = i; 2172 2173 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2174 } 2175 2176 Static void 2177 rum_amrr_timeout(void *arg) 2178 { 2179 struct rum_softc *sc = arg; 2180 usb_device_request_t req; 2181 int s; 2182 2183 s = splusb(); 2184 2185 /* 2186 * Asynchronously read statistic registers (cleared by read). 2187 */ 2188 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2189 req.bRequest = RT2573_READ_MULTI_MAC; 2190 USETW(req.wValue, 0); 2191 USETW(req.wIndex, RT2573_STA_CSR0); 2192 USETW(req.wLength, sizeof sc->sta); 2193 2194 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2195 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2196 rum_amrr_update); 2197 (void)usbd_transfer(sc->amrr_xfer); 2198 2199 splx(s); 2200 } 2201 2202 Static void 2203 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2204 usbd_status status) 2205 { 2206 struct rum_softc *sc = (struct rum_softc *)priv; 2207 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2208 2209 if (status != USBD_NORMAL_COMPLETION) { 2210 printf("%s: could not retrieve Tx statistics - cancelling " 2211 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2212 return; 2213 } 2214 2215 /* count TX retry-fail as Tx errors */ 2216 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2217 2218 sc->amn.amn_retrycnt = 2219 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2220 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2221 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2222 2223 sc->amn.amn_txcnt = 2224 sc->amn.amn_retrycnt + 2225 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2226 2227 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2228 2229 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2230 } 2231 2232 int 2233 rum_activate(device_ptr_t self, enum devact act) 2234 { 2235 switch (act) { 2236 case DVACT_ACTIVATE: 2237 return EOPNOTSUPP; 2238 2239 case DVACT_DEACTIVATE: 2240 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2241 break; 2242 } 2243 2244 return 0; 2245 } 2246
Indexes created Thu Sep 25 02:09:54 GMT 2025