if_rum.c revision 1.19
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.19 2007/12/09 20:28:23 jmcneill Exp $ */ 3 4 /*- 5 * Copyright (c) 2005-2007 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.tw/ 24 */ 25 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: if_rum.c,v 1.19 2007/12/09 20:28:23 jmcneill 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 <sys/bus.h> 43 #include <machine/endian.h> 44 #include <sys/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 = 1; 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_HWU54DM }, 92 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_2 }, 93 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_3 }, 94 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_4 }, 95 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_WUG2700 }, 96 { USB_VENDOR_AMIT, USB_PRODUCT_AMIT_CGWLUSB2GO }, 97 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_2 }, 98 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_3 }, 99 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 100 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 101 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 102 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GR }, 103 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 104 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GL }, 105 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 106 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 107 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 108 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 109 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 110 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWI05GS }, 111 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 112 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 113 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254LB }, 114 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254V2AP }, 115 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 116 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_G54HP }, 117 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, 118 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 119 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 120 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 121 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_4 }, 122 { USB_VENDOR_NOVATECH, USB_PRODUCT_NOVATECH_RT2573 }, 123 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54HP }, 124 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 125 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 126 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 127 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 128 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 129 { USB_VENDOR_RALINK_2, USB_PRODUCT_RALINK_2_RT2573 }, 130 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 131 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 132 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 133 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 134 }; 135 136 Static int rum_attachhook(void *); 137 Static int rum_alloc_tx_list(struct rum_softc *); 138 Static void rum_free_tx_list(struct rum_softc *); 139 Static int rum_alloc_rx_list(struct rum_softc *); 140 Static void rum_free_rx_list(struct rum_softc *); 141 Static int rum_media_change(struct ifnet *); 142 Static void rum_next_scan(void *); 143 Static void rum_task(void *); 144 Static int rum_newstate(struct ieee80211com *, 145 enum ieee80211_state, int); 146 Static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 147 usbd_status); 148 Static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 149 usbd_status); 150 #if NBPFILTER > 0 151 Static uint8_t rum_rxrate(const struct rum_rx_desc *); 152 #endif 153 Static int rum_ack_rate(struct ieee80211com *, int); 154 Static uint16_t rum_txtime(int, int, uint32_t); 155 Static uint8_t rum_plcp_signal(int); 156 Static void rum_setup_tx_desc(struct rum_softc *, 157 struct rum_tx_desc *, uint32_t, uint16_t, int, 158 int); 159 Static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 160 struct ieee80211_node *); 161 Static int rum_tx_data(struct rum_softc *, struct mbuf *, 162 struct ieee80211_node *); 163 Static void rum_start(struct ifnet *); 164 Static void rum_watchdog(struct ifnet *); 165 Static int rum_ioctl(struct ifnet *, u_long, void *); 166 Static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 167 int); 168 Static uint32_t rum_read(struct rum_softc *, uint16_t); 169 Static void rum_read_multi(struct rum_softc *, uint16_t, void *, 170 int); 171 Static void rum_write(struct rum_softc *, uint16_t, uint32_t); 172 Static void rum_write_multi(struct rum_softc *, uint16_t, void *, 173 size_t); 174 Static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 175 Static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 176 Static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 177 Static void rum_select_antenna(struct rum_softc *); 178 Static void rum_enable_mrr(struct rum_softc *); 179 Static void rum_set_txpreamble(struct rum_softc *); 180 Static void rum_set_basicrates(struct rum_softc *); 181 Static void rum_select_band(struct rum_softc *, 182 struct ieee80211_channel *); 183 Static void rum_set_chan(struct rum_softc *, 184 struct ieee80211_channel *); 185 Static void rum_enable_tsf_sync(struct rum_softc *); 186 Static void rum_update_slot(struct rum_softc *); 187 Static void rum_set_bssid(struct rum_softc *, const uint8_t *); 188 Static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 189 Static void rum_update_promisc(struct rum_softc *); 190 Static const char *rum_get_rf(int); 191 Static void rum_read_eeprom(struct rum_softc *); 192 Static int rum_bbp_init(struct rum_softc *); 193 Static int rum_init(struct ifnet *); 194 Static void rum_stop(struct ifnet *, int); 195 Static int rum_load_microcode(struct rum_softc *, const u_char *, 196 size_t); 197 Static int rum_prepare_beacon(struct rum_softc *); 198 Static void rum_newassoc(struct ieee80211_node *, int); 199 Static void rum_amrr_start(struct rum_softc *, 200 struct ieee80211_node *); 201 Static void rum_amrr_timeout(void *); 202 Static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 203 usbd_status status); 204 205 /* 206 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 207 */ 208 static const struct ieee80211_rateset rum_rateset_11a = 209 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 210 211 static const struct ieee80211_rateset rum_rateset_11b = 212 { 4, { 2, 4, 11, 22 } }; 213 214 static const struct ieee80211_rateset rum_rateset_11g = 215 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 216 217 static const struct { 218 uint32_t reg; 219 uint32_t val; 220 } rum_def_mac[] = { 221 RT2573_DEF_MAC 222 }; 223 224 static const struct { 225 uint8_t reg; 226 uint8_t val; 227 } rum_def_bbp[] = { 228 RT2573_DEF_BBP 229 }; 230 231 static const struct rfprog { 232 uint8_t chan; 233 uint32_t r1, r2, r3, r4; 234 } rum_rf5226[] = { 235 RT2573_RF5226 236 }, rum_rf5225[] = { 237 RT2573_RF5225 238 }; 239 240 USB_DECLARE_DRIVER(rum); 241 242 USB_MATCH(rum) 243 { 244 USB_MATCH_START(rum, uaa); 245 246 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 247 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 248 } 249 250 Static int 251 rum_attachhook(void *xsc) 252 { 253 struct rum_softc *sc = xsc; 254 firmware_handle_t fwh; 255 const char *name = "rum-rt2573"; 256 u_char *ucode; 257 size_t size; 258 int error; 259 260 if ((error = firmware_open("rum", name, &fwh)) != 0) { 261 printf("%s: failed loadfirmware of file %s (error %d)\n", 262 USBDEVNAME(sc->sc_dev), name, error); 263 return error; 264 } 265 size = firmware_get_size(fwh); 266 ucode = firmware_malloc(size); 267 if (ucode == NULL) { 268 printf("%s: failed to allocate firmware memory\n", 269 USBDEVNAME(sc->sc_dev)); 270 firmware_close(fwh); 271 return ENOMEM;; 272 } 273 error = firmware_read(fwh, 0, ucode, size); 274 firmware_close(fwh); 275 if (error != 0) { 276 printf("%s: failed to read firmware (error %d)\n", 277 USBDEVNAME(sc->sc_dev), error); 278 firmware_free(ucode, 0); 279 return error; 280 } 281 282 if (rum_load_microcode(sc, ucode, size) != 0) { 283 printf("%s: could not load 8051 microcode\n", 284 USBDEVNAME(sc->sc_dev)); 285 firmware_free(ucode, 0); 286 return ENXIO; 287 } 288 289 firmware_free(ucode, 0); 290 sc->sc_flags |= RT2573_FWLOADED; 291 292 return 0; 293 } 294 295 USB_ATTACH(rum) 296 { 297 USB_ATTACH_START(rum, sc, uaa); 298 struct ieee80211com *ic = &sc->sc_ic; 299 struct ifnet *ifp = &sc->sc_if; 300 usb_interface_descriptor_t *id; 301 usb_endpoint_descriptor_t *ed; 302 usbd_status error; 303 char *devinfop; 304 int i, ntries; 305 uint32_t tmp; 306 307 sc->sc_udev = uaa->device; 308 sc->sc_flags = 0; 309 310 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 311 USB_ATTACH_SETUP; 312 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 313 usbd_devinfo_free(devinfop); 314 315 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 316 printf("%s: could not set configuration no\n", 317 USBDEVNAME(sc->sc_dev)); 318 USB_ATTACH_ERROR_RETURN; 319 } 320 321 /* get the first interface handle */ 322 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 323 &sc->sc_iface); 324 if (error != 0) { 325 printf("%s: could not get interface handle\n", 326 USBDEVNAME(sc->sc_dev)); 327 USB_ATTACH_ERROR_RETURN; 328 } 329 330 /* 331 * Find endpoints. 332 */ 333 id = usbd_get_interface_descriptor(sc->sc_iface); 334 335 sc->sc_rx_no = sc->sc_tx_no = -1; 336 for (i = 0; i < id->bNumEndpoints; i++) { 337 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 338 if (ed == NULL) { 339 printf("%s: no endpoint descriptor for iface %d\n", 340 USBDEVNAME(sc->sc_dev), i); 341 USB_ATTACH_ERROR_RETURN; 342 } 343 344 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 345 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 346 sc->sc_rx_no = ed->bEndpointAddress; 347 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 348 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 349 sc->sc_tx_no = ed->bEndpointAddress; 350 } 351 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 352 printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev)); 353 USB_ATTACH_ERROR_RETURN; 354 } 355 356 usb_init_task(&sc->sc_task, rum_task, sc); 357 usb_callout_init(sc->sc_scan_ch); 358 359 sc->amrr.amrr_min_success_threshold = 1; 360 sc->amrr.amrr_max_success_threshold = 10; 361 usb_callout_init(sc->sc_amrr_ch); 362 363 /* retrieve RT2573 rev. no */ 364 for (ntries = 0; ntries < 1000; ntries++) { 365 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 366 break; 367 DELAY(1000); 368 } 369 if (ntries == 1000) { 370 printf("%s: timeout waiting for chip to settle\n", 371 USBDEVNAME(sc->sc_dev)); 372 USB_ATTACH_ERROR_RETURN; 373 } 374 375 /* retrieve MAC address and various other things from EEPROM */ 376 rum_read_eeprom(sc); 377 378 printf("%s: MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 379 USBDEVNAME(sc->sc_dev), sc->macbbp_rev, tmp, 380 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 381 382 ic->ic_ifp = ifp; 383 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 384 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 385 ic->ic_state = IEEE80211_S_INIT; 386 387 /* set device capabilities */ 388 ic->ic_caps = 389 IEEE80211_C_IBSS | /* IBSS mode supported */ 390 IEEE80211_C_MONITOR | /* monitor mode supported */ 391 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 392 IEEE80211_C_TXPMGT | /* tx power management */ 393 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 394 IEEE80211_C_SHSLOT | /* short slot time supported */ 395 IEEE80211_C_WPA; /* 802.11i */ 396 397 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 398 /* set supported .11a rates */ 399 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 400 401 /* set supported .11a channels */ 402 for (i = 34; i <= 46; i += 4) { 403 ic->ic_channels[i].ic_freq = 404 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 405 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 406 } 407 for (i = 36; i <= 64; i += 4) { 408 ic->ic_channels[i].ic_freq = 409 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 410 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 411 } 412 for (i = 100; i <= 140; i += 4) { 413 ic->ic_channels[i].ic_freq = 414 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 415 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 416 } 417 for (i = 149; i <= 165; i += 4) { 418 ic->ic_channels[i].ic_freq = 419 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 420 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 421 } 422 } 423 424 /* set supported .11b and .11g rates */ 425 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 426 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 427 428 /* set supported .11b and .11g channels (1 through 14) */ 429 for (i = 1; i <= 14; i++) { 430 ic->ic_channels[i].ic_freq = 431 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 432 ic->ic_channels[i].ic_flags = 433 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 434 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 435 } 436 437 ifp->if_softc = sc; 438 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 439 ifp->if_init = rum_init; 440 ifp->if_ioctl = rum_ioctl; 441 ifp->if_start = rum_start; 442 ifp->if_watchdog = rum_watchdog; 443 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 444 IFQ_SET_READY(&ifp->if_snd); 445 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 446 447 if_attach(ifp); 448 ieee80211_ifattach(ic); 449 ic->ic_newassoc = rum_newassoc; 450 451 /* override state transition machine */ 452 sc->sc_newstate = ic->ic_newstate; 453 ic->ic_newstate = rum_newstate; 454 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 455 456 #if NBPFILTER > 0 457 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 458 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 459 460 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 461 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 462 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 463 464 sc->sc_txtap_len = sizeof sc->sc_txtapu; 465 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 466 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 467 #endif 468 469 ieee80211_announce(ic); 470 471 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 472 USBDEV(sc->sc_dev)); 473 474 USB_ATTACH_SUCCESS_RETURN; 475 } 476 477 USB_DETACH(rum) 478 { 479 USB_DETACH_START(rum, sc); 480 struct ieee80211com *ic = &sc->sc_ic; 481 struct ifnet *ifp = &sc->sc_if; 482 int s; 483 484 if (!ifp->if_softc) 485 return 0; 486 487 s = splusb(); 488 489 rum_stop(ifp, 1); 490 usb_rem_task(sc->sc_udev, &sc->sc_task); 491 usb_uncallout(sc->sc_scan_ch, rum_next_scan, sc); 492 usb_uncallout(sc->sc_amrr_ch, rum_amrr_timeout, sc); 493 494 if (sc->amrr_xfer != NULL) { 495 usbd_free_xfer(sc->amrr_xfer); 496 sc->amrr_xfer = NULL; 497 } 498 499 if (sc->sc_rx_pipeh != NULL) { 500 usbd_abort_pipe(sc->sc_rx_pipeh); 501 usbd_close_pipe(sc->sc_rx_pipeh); 502 } 503 504 if (sc->sc_tx_pipeh != NULL) { 505 usbd_abort_pipe(sc->sc_tx_pipeh); 506 usbd_close_pipe(sc->sc_tx_pipeh); 507 } 508 509 #if NBPFILTER > 0 510 bpfdetach(ifp); 511 #endif 512 ieee80211_ifdetach(ic); /* free all nodes */ 513 if_detach(ifp); 514 515 splx(s); 516 517 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 518 USBDEV(sc->sc_dev)); 519 520 return 0; 521 } 522 523 Static int 524 rum_alloc_tx_list(struct rum_softc *sc) 525 { 526 struct rum_tx_data *data; 527 int i, error; 528 529 sc->tx_queued = 0; 530 531 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 532 data = &sc->tx_data[i]; 533 534 data->sc = sc; 535 536 data->xfer = usbd_alloc_xfer(sc->sc_udev); 537 if (data->xfer == NULL) { 538 printf("%s: could not allocate tx xfer\n", 539 USBDEVNAME(sc->sc_dev)); 540 error = ENOMEM; 541 goto fail; 542 } 543 544 data->buf = usbd_alloc_buffer(data->xfer, 545 RT2573_TX_DESC_SIZE + MCLBYTES); 546 if (data->buf == NULL) { 547 printf("%s: could not allocate tx buffer\n", 548 USBDEVNAME(sc->sc_dev)); 549 error = ENOMEM; 550 goto fail; 551 } 552 553 /* clean Tx descriptor */ 554 bzero(data->buf, RT2573_TX_DESC_SIZE); 555 } 556 557 return 0; 558 559 fail: rum_free_tx_list(sc); 560 return error; 561 } 562 563 Static void 564 rum_free_tx_list(struct rum_softc *sc) 565 { 566 struct rum_tx_data *data; 567 int i; 568 569 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 570 data = &sc->tx_data[i]; 571 572 if (data->xfer != NULL) { 573 usbd_free_xfer(data->xfer); 574 data->xfer = NULL; 575 } 576 577 if (data->ni != NULL) { 578 ieee80211_free_node(data->ni); 579 data->ni = NULL; 580 } 581 } 582 } 583 584 Static int 585 rum_alloc_rx_list(struct rum_softc *sc) 586 { 587 struct rum_rx_data *data; 588 int i, error; 589 590 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 591 data = &sc->rx_data[i]; 592 593 data->sc = sc; 594 595 data->xfer = usbd_alloc_xfer(sc->sc_udev); 596 if (data->xfer == NULL) { 597 printf("%s: could not allocate rx xfer\n", 598 USBDEVNAME(sc->sc_dev)); 599 error = ENOMEM; 600 goto fail; 601 } 602 603 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 604 printf("%s: could not allocate rx buffer\n", 605 USBDEVNAME(sc->sc_dev)); 606 error = ENOMEM; 607 goto fail; 608 } 609 610 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 611 if (data->m == NULL) { 612 printf("%s: could not allocate rx mbuf\n", 613 USBDEVNAME(sc->sc_dev)); 614 error = ENOMEM; 615 goto fail; 616 } 617 618 MCLGET(data->m, M_DONTWAIT); 619 if (!(data->m->m_flags & M_EXT)) { 620 printf("%s: could not allocate rx mbuf cluster\n", 621 USBDEVNAME(sc->sc_dev)); 622 error = ENOMEM; 623 goto fail; 624 } 625 626 data->buf = mtod(data->m, uint8_t *); 627 } 628 629 return 0; 630 631 fail: rum_free_tx_list(sc); 632 return error; 633 } 634 635 Static void 636 rum_free_rx_list(struct rum_softc *sc) 637 { 638 struct rum_rx_data *data; 639 int i; 640 641 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 642 data = &sc->rx_data[i]; 643 644 if (data->xfer != NULL) { 645 usbd_free_xfer(data->xfer); 646 data->xfer = NULL; 647 } 648 649 if (data->m != NULL) { 650 m_freem(data->m); 651 data->m = NULL; 652 } 653 } 654 } 655 656 Static int 657 rum_media_change(struct ifnet *ifp) 658 { 659 int error; 660 661 error = ieee80211_media_change(ifp); 662 if (error != ENETRESET) 663 return error; 664 665 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 666 rum_init(ifp); 667 668 return 0; 669 } 670 671 /* 672 * This function is called periodically (every 200ms) during scanning to 673 * switch from one channel to another. 674 */ 675 Static void 676 rum_next_scan(void *arg) 677 { 678 struct rum_softc *sc = arg; 679 struct ieee80211com *ic = &sc->sc_ic; 680 681 if (ic->ic_state == IEEE80211_S_SCAN) 682 ieee80211_next_scan(ic); 683 } 684 685 Static void 686 rum_task(void *arg) 687 { 688 struct rum_softc *sc = arg; 689 struct ieee80211com *ic = &sc->sc_ic; 690 enum ieee80211_state ostate; 691 struct ieee80211_node *ni; 692 uint32_t tmp; 693 694 ostate = ic->ic_state; 695 696 switch (sc->sc_state) { 697 case IEEE80211_S_INIT: 698 if (ostate == IEEE80211_S_RUN) { 699 /* abort TSF synchronization */ 700 tmp = rum_read(sc, RT2573_TXRX_CSR9); 701 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 702 } 703 break; 704 705 case IEEE80211_S_SCAN: 706 rum_set_chan(sc, ic->ic_curchan); 707 usb_callout(sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 708 break; 709 710 case IEEE80211_S_AUTH: 711 rum_set_chan(sc, ic->ic_curchan); 712 break; 713 714 case IEEE80211_S_ASSOC: 715 rum_set_chan(sc, ic->ic_curchan); 716 break; 717 718 case IEEE80211_S_RUN: 719 rum_set_chan(sc, ic->ic_curchan); 720 721 ni = ic->ic_bss; 722 723 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 724 rum_update_slot(sc); 725 rum_enable_mrr(sc); 726 rum_set_txpreamble(sc); 727 rum_set_basicrates(sc); 728 rum_set_bssid(sc, ni->ni_bssid); 729 } 730 731 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 732 ic->ic_opmode == IEEE80211_M_IBSS) 733 rum_prepare_beacon(sc); 734 735 if (ic->ic_opmode != IEEE80211_M_MONITOR) 736 rum_enable_tsf_sync(sc); 737 738 if (ic->ic_opmode == IEEE80211_M_STA) { 739 /* fake a join to init the tx rate */ 740 rum_newassoc(ic->ic_bss, 1); 741 742 /* enable automatic rate adaptation in STA mode */ 743 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 744 rum_amrr_start(sc, ni); 745 } 746 747 break; 748 } 749 750 sc->sc_newstate(ic, sc->sc_state, -1); 751 } 752 753 Static int 754 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 755 { 756 struct rum_softc *sc = ic->ic_ifp->if_softc; 757 758 usb_rem_task(sc->sc_udev, &sc->sc_task); 759 usb_uncallout(sc->sc_scan_ch, rum_next_scan, sc); 760 usb_uncallout(sc->sc_amrr_ch, rum_amrr_timeout, sc); 761 762 /* do it in a process context */ 763 sc->sc_state = nstate; 764 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 765 766 return 0; 767 } 768 769 /* quickly determine if a given rate is CCK or OFDM */ 770 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 771 772 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 773 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 774 775 Static void 776 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 777 { 778 struct rum_tx_data *data = priv; 779 struct rum_softc *sc = data->sc; 780 struct ifnet *ifp = &sc->sc_if; 781 int s; 782 783 if (status != USBD_NORMAL_COMPLETION) { 784 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 785 return; 786 787 printf("%s: could not transmit buffer: %s\n", 788 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 789 790 if (status == USBD_STALLED) 791 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 792 793 ifp->if_oerrors++; 794 return; 795 } 796 797 s = splnet(); 798 799 ieee80211_free_node(data->ni); 800 data->ni = NULL; 801 802 sc->tx_queued--; 803 ifp->if_opackets++; 804 805 DPRINTFN(10, ("tx done\n")); 806 807 sc->sc_tx_timer = 0; 808 ifp->if_flags &= ~IFF_OACTIVE; 809 rum_start(ifp); 810 811 splx(s); 812 } 813 814 Static void 815 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 816 { 817 struct rum_rx_data *data = priv; 818 struct rum_softc *sc = data->sc; 819 struct ieee80211com *ic = &sc->sc_ic; 820 struct ifnet *ifp = &sc->sc_if; 821 struct rum_rx_desc *desc; 822 struct ieee80211_frame *wh; 823 struct ieee80211_node *ni; 824 struct mbuf *mnew, *m; 825 int s, len; 826 827 if (status != USBD_NORMAL_COMPLETION) { 828 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 829 return; 830 831 if (status == USBD_STALLED) 832 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 833 goto skip; 834 } 835 836 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 837 838 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 839 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 840 len)); 841 ifp->if_ierrors++; 842 goto skip; 843 } 844 845 desc = (struct rum_rx_desc *)data->buf; 846 847 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 848 /* 849 * This should not happen since we did not request to receive 850 * those frames when we filled RT2573_TXRX_CSR0. 851 */ 852 DPRINTFN(5, ("CRC error\n")); 853 ifp->if_ierrors++; 854 goto skip; 855 } 856 857 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 858 if (mnew == NULL) { 859 printf("%s: could not allocate rx mbuf\n", 860 USBDEVNAME(sc->sc_dev)); 861 ifp->if_ierrors++; 862 goto skip; 863 } 864 865 MCLGET(mnew, M_DONTWAIT); 866 if (!(mnew->m_flags & M_EXT)) { 867 printf("%s: could not allocate rx mbuf cluster\n", 868 USBDEVNAME(sc->sc_dev)); 869 m_freem(mnew); 870 ifp->if_ierrors++; 871 goto skip; 872 } 873 874 m = data->m; 875 data->m = mnew; 876 data->buf = mtod(data->m, uint8_t *); 877 878 /* finalize mbuf */ 879 m->m_pkthdr.rcvif = ifp; 880 m->m_data = (void *)(desc + 1); 881 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 882 883 s = splnet(); 884 885 #if NBPFILTER > 0 886 if (sc->sc_drvbpf != NULL) { 887 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 888 889 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 890 tap->wr_rate = rum_rxrate(desc); 891 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 892 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 893 tap->wr_antenna = sc->rx_ant; 894 tap->wr_antsignal = desc->rssi; 895 896 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 897 } 898 #endif 899 900 wh = mtod(m, struct ieee80211_frame *); 901 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 902 903 /* send the frame to the 802.11 layer */ 904 ieee80211_input(ic, m, ni, desc->rssi, 0); 905 906 /* node is no longer needed */ 907 ieee80211_free_node(ni); 908 909 splx(s); 910 911 DPRINTFN(15, ("rx done\n")); 912 913 skip: /* setup a new transfer */ 914 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 915 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 916 usbd_transfer(xfer); 917 } 918 919 /* 920 * This function is only used by the Rx radiotap code. It returns the rate at 921 * which a given frame was received. 922 */ 923 #if NBPFILTER > 0 924 Static uint8_t 925 rum_rxrate(const struct rum_rx_desc *desc) 926 { 927 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 928 /* reverse function of rum_plcp_signal */ 929 switch (desc->rate) { 930 case 0xb: return 12; 931 case 0xf: return 18; 932 case 0xa: return 24; 933 case 0xe: return 36; 934 case 0x9: return 48; 935 case 0xd: return 72; 936 case 0x8: return 96; 937 case 0xc: return 108; 938 } 939 } else { 940 if (desc->rate == 10) 941 return 2; 942 if (desc->rate == 20) 943 return 4; 944 if (desc->rate == 55) 945 return 11; 946 if (desc->rate == 110) 947 return 22; 948 } 949 return 2; /* should not get there */ 950 } 951 #endif 952 953 /* 954 * Return the expected ack rate for a frame transmitted at rate `rate'. 955 * XXX: this should depend on the destination node basic rate set. 956 */ 957 Static int 958 rum_ack_rate(struct ieee80211com *ic, int rate) 959 { 960 switch (rate) { 961 /* CCK rates */ 962 case 2: 963 return 2; 964 case 4: 965 case 11: 966 case 22: 967 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 968 969 /* OFDM rates */ 970 case 12: 971 case 18: 972 return 12; 973 case 24: 974 case 36: 975 return 24; 976 case 48: 977 case 72: 978 case 96: 979 case 108: 980 return 48; 981 } 982 983 /* default to 1Mbps */ 984 return 2; 985 } 986 987 /* 988 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 989 * The function automatically determines the operating mode depending on the 990 * given rate. `flags' indicates whether short preamble is in use or not. 991 */ 992 Static uint16_t 993 rum_txtime(int len, int rate, uint32_t flags) 994 { 995 uint16_t txtime; 996 997 if (RUM_RATE_IS_OFDM(rate)) { 998 /* IEEE Std 802.11a-1999, pp. 37 */ 999 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 1000 txtime = 16 + 4 + 4 * txtime + 6; 1001 } else { 1002 /* IEEE Std 802.11b-1999, pp. 28 */ 1003 txtime = (16 * len + rate - 1) / rate; 1004 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1005 txtime += 72 + 24; 1006 else 1007 txtime += 144 + 48; 1008 } 1009 return txtime; 1010 } 1011 1012 Static uint8_t 1013 rum_plcp_signal(int rate) 1014 { 1015 switch (rate) { 1016 /* CCK rates (returned values are device-dependent) */ 1017 case 2: return 0x0; 1018 case 4: return 0x1; 1019 case 11: return 0x2; 1020 case 22: return 0x3; 1021 1022 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1023 case 12: return 0xb; 1024 case 18: return 0xf; 1025 case 24: return 0xa; 1026 case 36: return 0xe; 1027 case 48: return 0x9; 1028 case 72: return 0xd; 1029 case 96: return 0x8; 1030 case 108: return 0xc; 1031 1032 /* unsupported rates (should not get there) */ 1033 default: return 0xff; 1034 } 1035 } 1036 1037 Static void 1038 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1039 uint32_t flags, uint16_t xflags, int len, int rate) 1040 { 1041 struct ieee80211com *ic = &sc->sc_ic; 1042 uint16_t plcp_length; 1043 int remainder; 1044 1045 desc->flags = htole32(flags); 1046 desc->flags |= htole32(RT2573_TX_VALID); 1047 desc->flags |= htole32(len << 16); 1048 1049 desc->xflags = htole16(xflags); 1050 1051 desc->wme = htole16( 1052 RT2573_QID(0) | 1053 RT2573_AIFSN(2) | 1054 RT2573_LOGCWMIN(4) | 1055 RT2573_LOGCWMAX(10)); 1056 1057 /* setup PLCP fields */ 1058 desc->plcp_signal = rum_plcp_signal(rate); 1059 desc->plcp_service = 4; 1060 1061 len += IEEE80211_CRC_LEN; 1062 if (RUM_RATE_IS_OFDM(rate)) { 1063 desc->flags |= htole32(RT2573_TX_OFDM); 1064 1065 plcp_length = len & 0xfff; 1066 desc->plcp_length_hi = plcp_length >> 6; 1067 desc->plcp_length_lo = plcp_length & 0x3f; 1068 } else { 1069 plcp_length = (16 * len + rate - 1) / rate; 1070 if (rate == 22) { 1071 remainder = (16 * len) % 22; 1072 if (remainder != 0 && remainder < 7) 1073 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1074 } 1075 desc->plcp_length_hi = plcp_length >> 8; 1076 desc->plcp_length_lo = plcp_length & 0xff; 1077 1078 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1079 desc->plcp_signal |= 0x08; 1080 } 1081 } 1082 1083 #define RUM_TX_TIMEOUT 5000 1084 1085 Static int 1086 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1087 { 1088 struct ieee80211com *ic = &sc->sc_ic; 1089 struct rum_tx_desc *desc; 1090 struct rum_tx_data *data; 1091 struct ieee80211_frame *wh; 1092 struct ieee80211_key *k; 1093 uint32_t flags = 0; 1094 uint16_t dur; 1095 usbd_status error; 1096 int xferlen, rate; 1097 1098 data = &sc->tx_data[0]; 1099 desc = (struct rum_tx_desc *)data->buf; 1100 1101 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 1102 1103 data->m = m0; 1104 data->ni = ni; 1105 1106 wh = mtod(m0, struct ieee80211_frame *); 1107 1108 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1109 k = ieee80211_crypto_encap(ic, ni, m0); 1110 if (k == NULL) { 1111 m_freem(m0); 1112 return ENOBUFS; 1113 } 1114 } 1115 1116 wh = mtod(m0, struct ieee80211_frame *); 1117 1118 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1119 flags |= RT2573_TX_NEED_ACK; 1120 1121 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1122 ic->ic_flags) + sc->sifs; 1123 *(uint16_t *)wh->i_dur = htole16(dur); 1124 1125 /* tell hardware to set timestamp in probe responses */ 1126 if ((wh->i_fc[0] & 1127 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1128 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1129 flags |= RT2573_TX_TIMESTAMP; 1130 } 1131 1132 #if NBPFILTER > 0 1133 if (sc->sc_drvbpf != NULL) { 1134 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1135 1136 tap->wt_flags = 0; 1137 tap->wt_rate = rate; 1138 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1139 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1140 tap->wt_antenna = sc->tx_ant; 1141 1142 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1143 } 1144 #endif 1145 1146 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1147 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1148 1149 /* align end on a 4-bytes boundary */ 1150 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1151 1152 /* 1153 * No space left in the last URB to store the extra 4 bytes, force 1154 * sending of another URB. 1155 */ 1156 if ((xferlen % 64) == 0) 1157 xferlen += 4; 1158 1159 DPRINTFN(10, ("sending msg frame len=%zu rate=%u xfer len=%u\n", 1160 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1161 rate, xferlen)); 1162 1163 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1164 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1165 1166 error = usbd_transfer(data->xfer); 1167 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1168 m_freem(m0); 1169 return error; 1170 } 1171 1172 sc->tx_queued++; 1173 1174 return 0; 1175 } 1176 1177 Static int 1178 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1179 { 1180 struct ieee80211com *ic = &sc->sc_ic; 1181 struct rum_tx_desc *desc; 1182 struct rum_tx_data *data; 1183 struct ieee80211_frame *wh; 1184 struct ieee80211_key *k; 1185 uint32_t flags = 0; 1186 uint16_t dur; 1187 usbd_status error; 1188 int xferlen, rate; 1189 1190 wh = mtod(m0, struct ieee80211_frame *); 1191 1192 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1193 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1194 else 1195 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1196 if (rate == 0) 1197 rate = 2; /* XXX should not happen */ 1198 rate &= IEEE80211_RATE_VAL; 1199 1200 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1201 k = ieee80211_crypto_encap(ic, ni, m0); 1202 if (k == NULL) { 1203 m_freem(m0); 1204 return ENOBUFS; 1205 } 1206 1207 /* packet header may have moved, reset our local pointer */ 1208 wh = mtod(m0, struct ieee80211_frame *); 1209 } 1210 1211 data = &sc->tx_data[0]; 1212 desc = (struct rum_tx_desc *)data->buf; 1213 1214 data->ni = ni; 1215 1216 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1217 flags |= RT2573_TX_NEED_ACK; 1218 1219 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1220 ic->ic_flags) + sc->sifs; 1221 *(uint16_t *)wh->i_dur = htole16(dur); 1222 } 1223 1224 #if NBPFILTER > 0 1225 if (sc->sc_drvbpf != NULL) { 1226 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1227 1228 tap->wt_flags = 0; 1229 tap->wt_rate = rate; 1230 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1231 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1232 tap->wt_antenna = sc->tx_ant; 1233 1234 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1235 } 1236 #endif 1237 1238 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1239 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1240 1241 /* align end on a 4-bytes boundary */ 1242 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1243 1244 /* 1245 * No space left in the last URB to store the extra 4 bytes, force 1246 * sending of another URB. 1247 */ 1248 if ((xferlen % 64) == 0) 1249 xferlen += 4; 1250 1251 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1252 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1253 rate, xferlen)); 1254 1255 /* mbuf is no longer needed */ 1256 m_freem(m0); 1257 1258 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1259 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1260 1261 error = usbd_transfer(data->xfer); 1262 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1263 return error; 1264 1265 sc->tx_queued++; 1266 1267 return 0; 1268 } 1269 1270 Static void 1271 rum_start(struct ifnet *ifp) 1272 { 1273 struct rum_softc *sc = ifp->if_softc; 1274 struct ieee80211com *ic = &sc->sc_ic; 1275 struct ether_header *eh; 1276 struct ieee80211_node *ni; 1277 struct mbuf *m0; 1278 1279 for (;;) { 1280 IF_POLL(&ic->ic_mgtq, m0); 1281 if (m0 != NULL) { 1282 if (sc->tx_queued >= RUM_TX_LIST_COUNT) { 1283 ifp->if_flags |= IFF_OACTIVE; 1284 break; 1285 } 1286 IF_DEQUEUE(&ic->ic_mgtq, m0); 1287 1288 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1289 m0->m_pkthdr.rcvif = NULL; 1290 #if NBPFILTER > 0 1291 if (ic->ic_rawbpf != NULL) 1292 bpf_mtap(ic->ic_rawbpf, m0); 1293 #endif 1294 if (rum_tx_mgt(sc, m0, ni) != 0) 1295 break; 1296 1297 } else { 1298 if (ic->ic_state != IEEE80211_S_RUN) 1299 break; 1300 IFQ_POLL(&ifp->if_snd, m0); 1301 if (m0 == NULL) 1302 break; 1303 if (sc->tx_queued >= RUM_TX_LIST_COUNT) { 1304 ifp->if_flags |= IFF_OACTIVE; 1305 break; 1306 } 1307 IFQ_DEQUEUE(&ifp->if_snd, m0); 1308 if (m0->m_len < sizeof(struct ether_header) && 1309 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1310 continue; 1311 1312 eh = mtod(m0, struct ether_header *); 1313 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1314 if (ni == NULL) { 1315 m_freem(m0); 1316 continue; 1317 } 1318 #if NBPFILTER > 0 1319 if (ifp->if_bpf != NULL) 1320 bpf_mtap(ifp->if_bpf, m0); 1321 #endif 1322 m0 = ieee80211_encap(ic, m0, ni); 1323 if (m0 == NULL) { 1324 ieee80211_free_node(ni); 1325 continue; 1326 } 1327 #if NBPFILTER > 0 1328 if (ic->ic_rawbpf != NULL) 1329 bpf_mtap(ic->ic_rawbpf, m0); 1330 #endif 1331 if (rum_tx_data(sc, m0, ni) != 0) { 1332 ieee80211_free_node(ni); 1333 ifp->if_oerrors++; 1334 break; 1335 } 1336 } 1337 1338 sc->sc_tx_timer = 5; 1339 ifp->if_timer = 1; 1340 } 1341 } 1342 1343 Static void 1344 rum_watchdog(struct ifnet *ifp) 1345 { 1346 struct rum_softc *sc = ifp->if_softc; 1347 struct ieee80211com *ic = &sc->sc_ic; 1348 1349 ifp->if_timer = 0; 1350 1351 if (sc->sc_tx_timer > 0) { 1352 if (--sc->sc_tx_timer == 0) { 1353 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1354 /*rum_init(ifp); XXX needs a process context! */ 1355 ifp->if_oerrors++; 1356 return; 1357 } 1358 ifp->if_timer = 1; 1359 } 1360 1361 ieee80211_watchdog(ic); 1362 } 1363 1364 Static int 1365 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1366 { 1367 struct rum_softc *sc = ifp->if_softc; 1368 struct ieee80211com *ic = &sc->sc_ic; 1369 int s, error = 0; 1370 1371 s = splnet(); 1372 1373 switch (cmd) { 1374 case SIOCSIFFLAGS: 1375 if (ifp->if_flags & IFF_UP) { 1376 if (ifp->if_flags & IFF_RUNNING) 1377 rum_update_promisc(sc); 1378 else 1379 rum_init(ifp); 1380 } else { 1381 if (ifp->if_flags & IFF_RUNNING) 1382 rum_stop(ifp, 1); 1383 } 1384 break; 1385 1386 default: 1387 error = ieee80211_ioctl(ic, cmd, data); 1388 } 1389 1390 if (error == ENETRESET) { 1391 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1392 (IFF_UP | IFF_RUNNING)) 1393 rum_init(ifp); 1394 error = 0; 1395 } 1396 1397 splx(s); 1398 1399 return error; 1400 } 1401 1402 Static void 1403 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1404 { 1405 usb_device_request_t req; 1406 usbd_status error; 1407 1408 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1409 req.bRequest = RT2573_READ_EEPROM; 1410 USETW(req.wValue, 0); 1411 USETW(req.wIndex, addr); 1412 USETW(req.wLength, len); 1413 1414 error = usbd_do_request(sc->sc_udev, &req, buf); 1415 if (error != 0) { 1416 printf("%s: could not read EEPROM: %s\n", 1417 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1418 } 1419 } 1420 1421 Static uint32_t 1422 rum_read(struct rum_softc *sc, uint16_t reg) 1423 { 1424 uint32_t val; 1425 1426 rum_read_multi(sc, reg, &val, sizeof val); 1427 1428 return le32toh(val); 1429 } 1430 1431 Static void 1432 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1433 { 1434 usb_device_request_t req; 1435 usbd_status error; 1436 1437 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1438 req.bRequest = RT2573_READ_MULTI_MAC; 1439 USETW(req.wValue, 0); 1440 USETW(req.wIndex, reg); 1441 USETW(req.wLength, len); 1442 1443 error = usbd_do_request(sc->sc_udev, &req, buf); 1444 if (error != 0) { 1445 printf("%s: could not multi read MAC register: %s\n", 1446 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1447 } 1448 } 1449 1450 Static void 1451 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1452 { 1453 uint32_t tmp = htole32(val); 1454 1455 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1456 } 1457 1458 Static void 1459 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1460 { 1461 usb_device_request_t req; 1462 usbd_status error; 1463 1464 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1465 req.bRequest = RT2573_WRITE_MULTI_MAC; 1466 USETW(req.wValue, 0); 1467 USETW(req.wIndex, reg); 1468 USETW(req.wLength, len); 1469 1470 error = usbd_do_request(sc->sc_udev, &req, buf); 1471 if (error != 0) { 1472 printf("%s: could not multi write MAC register: %s\n", 1473 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1474 } 1475 } 1476 1477 Static void 1478 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1479 { 1480 uint32_t tmp; 1481 int ntries; 1482 1483 for (ntries = 0; ntries < 5; ntries++) { 1484 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1485 break; 1486 } 1487 if (ntries == 5) { 1488 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1489 return; 1490 } 1491 1492 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1493 rum_write(sc, RT2573_PHY_CSR3, tmp); 1494 } 1495 1496 Static uint8_t 1497 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1498 { 1499 uint32_t val; 1500 int ntries; 1501 1502 for (ntries = 0; ntries < 5; ntries++) { 1503 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1504 break; 1505 } 1506 if (ntries == 5) { 1507 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1508 return 0; 1509 } 1510 1511 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1512 rum_write(sc, RT2573_PHY_CSR3, val); 1513 1514 for (ntries = 0; ntries < 100; ntries++) { 1515 val = rum_read(sc, RT2573_PHY_CSR3); 1516 if (!(val & RT2573_BBP_BUSY)) 1517 return val & 0xff; 1518 DELAY(1); 1519 } 1520 1521 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1522 return 0; 1523 } 1524 1525 Static void 1526 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1527 { 1528 uint32_t tmp; 1529 int ntries; 1530 1531 for (ntries = 0; ntries < 5; ntries++) { 1532 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1533 break; 1534 } 1535 if (ntries == 5) { 1536 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1537 return; 1538 } 1539 1540 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1541 (reg & 3); 1542 rum_write(sc, RT2573_PHY_CSR4, tmp); 1543 1544 /* remember last written value in sc */ 1545 sc->rf_regs[reg] = val; 1546 1547 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1548 } 1549 1550 Static void 1551 rum_select_antenna(struct rum_softc *sc) 1552 { 1553 uint8_t bbp4, bbp77; 1554 uint32_t tmp; 1555 1556 bbp4 = rum_bbp_read(sc, 4); 1557 bbp77 = rum_bbp_read(sc, 77); 1558 1559 /* TBD */ 1560 1561 /* make sure Rx is disabled before switching antenna */ 1562 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1563 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1564 1565 rum_bbp_write(sc, 4, bbp4); 1566 rum_bbp_write(sc, 77, bbp77); 1567 1568 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1569 } 1570 1571 /* 1572 * Enable multi-rate retries for frames sent at OFDM rates. 1573 * In 802.11b/g mode, allow fallback to CCK rates. 1574 */ 1575 Static void 1576 rum_enable_mrr(struct rum_softc *sc) 1577 { 1578 struct ieee80211com *ic = &sc->sc_ic; 1579 uint32_t tmp; 1580 1581 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1582 1583 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1584 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1585 tmp |= RT2573_MRR_CCK_FALLBACK; 1586 tmp |= RT2573_MRR_ENABLED; 1587 1588 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1589 } 1590 1591 Static void 1592 rum_set_txpreamble(struct rum_softc *sc) 1593 { 1594 uint32_t tmp; 1595 1596 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1597 1598 tmp &= ~RT2573_SHORT_PREAMBLE; 1599 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1600 tmp |= RT2573_SHORT_PREAMBLE; 1601 1602 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1603 } 1604 1605 Static void 1606 rum_set_basicrates(struct rum_softc *sc) 1607 { 1608 struct ieee80211com *ic = &sc->sc_ic; 1609 1610 /* update basic rate set */ 1611 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1612 /* 11b basic rates: 1, 2Mbps */ 1613 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1614 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1615 /* 11a basic rates: 6, 12, 24Mbps */ 1616 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1617 } else { 1618 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1619 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1620 } 1621 } 1622 1623 /* 1624 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1625 * driver. 1626 */ 1627 Static void 1628 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1629 { 1630 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1631 uint32_t tmp; 1632 1633 /* update all BBP registers that depend on the band */ 1634 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1635 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1636 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1637 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1638 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1639 } 1640 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1641 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1642 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1643 } 1644 1645 sc->bbp17 = bbp17; 1646 rum_bbp_write(sc, 17, bbp17); 1647 rum_bbp_write(sc, 96, bbp96); 1648 rum_bbp_write(sc, 104, bbp104); 1649 1650 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1651 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1652 rum_bbp_write(sc, 75, 0x80); 1653 rum_bbp_write(sc, 86, 0x80); 1654 rum_bbp_write(sc, 88, 0x80); 1655 } 1656 1657 rum_bbp_write(sc, 35, bbp35); 1658 rum_bbp_write(sc, 97, bbp97); 1659 rum_bbp_write(sc, 98, bbp98); 1660 1661 tmp = rum_read(sc, RT2573_PHY_CSR0); 1662 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1663 if (IEEE80211_IS_CHAN_2GHZ(c)) 1664 tmp |= RT2573_PA_PE_2GHZ; 1665 else 1666 tmp |= RT2573_PA_PE_5GHZ; 1667 rum_write(sc, RT2573_PHY_CSR0, tmp); 1668 1669 /* 802.11a uses a 16 microseconds short interframe space */ 1670 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1671 } 1672 1673 Static void 1674 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1675 { 1676 struct ieee80211com *ic = &sc->sc_ic; 1677 const struct rfprog *rfprog; 1678 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1679 int8_t power; 1680 u_int i, chan; 1681 1682 chan = ieee80211_chan2ieee(ic, c); 1683 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1684 return; 1685 1686 /* select the appropriate RF settings based on what EEPROM says */ 1687 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1688 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1689 1690 /* find the settings for this channel (we know it exists) */ 1691 for (i = 0; rfprog[i].chan != chan; i++); 1692 1693 power = sc->txpow[i]; 1694 if (power < 0) { 1695 bbp94 += power; 1696 power = 0; 1697 } else if (power > 31) { 1698 bbp94 += power - 31; 1699 power = 31; 1700 } 1701 1702 /* 1703 * If we are switching from the 2GHz band to the 5GHz band or 1704 * vice-versa, BBP registers need to be reprogrammed. 1705 */ 1706 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1707 rum_select_band(sc, c); 1708 rum_select_antenna(sc); 1709 } 1710 ic->ic_curchan = c; 1711 1712 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1713 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1714 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1715 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1716 1717 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1718 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1719 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1720 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1721 1722 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1723 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1724 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1725 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1726 1727 DELAY(10); 1728 1729 /* enable smart mode for MIMO-capable RFs */ 1730 bbp3 = rum_bbp_read(sc, 3); 1731 1732 bbp3 &= ~RT2573_SMART_MODE; 1733 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1734 bbp3 |= RT2573_SMART_MODE; 1735 1736 rum_bbp_write(sc, 3, bbp3); 1737 1738 if (bbp94 != RT2573_BBPR94_DEFAULT) 1739 rum_bbp_write(sc, 94, bbp94); 1740 } 1741 1742 /* 1743 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1744 * and HostAP operating modes. 1745 */ 1746 Static void 1747 rum_enable_tsf_sync(struct rum_softc *sc) 1748 { 1749 struct ieee80211com *ic = &sc->sc_ic; 1750 uint32_t tmp; 1751 1752 if (ic->ic_opmode != IEEE80211_M_STA) { 1753 /* 1754 * Change default 16ms TBTT adjustment to 8ms. 1755 * Must be done before enabling beacon generation. 1756 */ 1757 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1758 } 1759 1760 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1761 1762 /* set beacon interval (in 1/16ms unit) */ 1763 tmp |= ic->ic_bss->ni_intval * 16; 1764 1765 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1766 if (ic->ic_opmode == IEEE80211_M_STA) 1767 tmp |= RT2573_TSF_MODE(1); 1768 else 1769 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1770 1771 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1772 } 1773 1774 Static void 1775 rum_update_slot(struct rum_softc *sc) 1776 { 1777 struct ieee80211com *ic = &sc->sc_ic; 1778 uint8_t slottime; 1779 uint32_t tmp; 1780 1781 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1782 1783 tmp = rum_read(sc, RT2573_MAC_CSR9); 1784 tmp = (tmp & ~0xff) | slottime; 1785 rum_write(sc, RT2573_MAC_CSR9, tmp); 1786 1787 DPRINTF(("setting slot time to %uus\n", slottime)); 1788 } 1789 1790 Static void 1791 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1792 { 1793 uint32_t tmp; 1794 1795 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1796 rum_write(sc, RT2573_MAC_CSR4, tmp); 1797 1798 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1799 rum_write(sc, RT2573_MAC_CSR5, tmp); 1800 } 1801 1802 Static void 1803 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1804 { 1805 uint32_t tmp; 1806 1807 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1808 rum_write(sc, RT2573_MAC_CSR2, tmp); 1809 1810 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1811 rum_write(sc, RT2573_MAC_CSR3, tmp); 1812 } 1813 1814 Static void 1815 rum_update_promisc(struct rum_softc *sc) 1816 { 1817 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1818 uint32_t tmp; 1819 1820 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1821 1822 tmp &= ~RT2573_DROP_NOT_TO_ME; 1823 if (!(ifp->if_flags & IFF_PROMISC)) 1824 tmp |= RT2573_DROP_NOT_TO_ME; 1825 1826 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1827 1828 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1829 "entering" : "leaving")); 1830 } 1831 1832 Static const char * 1833 rum_get_rf(int rev) 1834 { 1835 switch (rev) { 1836 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1837 case RT2573_RF_2528: return "RT2528"; 1838 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1839 case RT2573_RF_5226: return "RT5226"; 1840 default: return "unknown"; 1841 } 1842 } 1843 1844 Static void 1845 rum_read_eeprom(struct rum_softc *sc) 1846 { 1847 struct ieee80211com *ic = &sc->sc_ic; 1848 uint16_t val; 1849 #ifdef RUM_DEBUG 1850 int i; 1851 #endif 1852 1853 /* read MAC/BBP type */ 1854 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1855 sc->macbbp_rev = le16toh(val); 1856 1857 /* read MAC address */ 1858 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1859 1860 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1861 val = le16toh(val); 1862 sc->rf_rev = (val >> 11) & 0x1f; 1863 sc->hw_radio = (val >> 10) & 0x1; 1864 sc->rx_ant = (val >> 4) & 0x3; 1865 sc->tx_ant = (val >> 2) & 0x3; 1866 sc->nb_ant = val & 0x3; 1867 1868 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1869 1870 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1871 val = le16toh(val); 1872 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1873 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1874 1875 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1876 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1877 1878 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1879 val = le16toh(val); 1880 if ((val & 0xff) != 0xff) 1881 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1882 1883 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1884 val = le16toh(val); 1885 if ((val & 0xff) != 0xff) 1886 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1887 1888 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1889 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1890 1891 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1892 val = le16toh(val); 1893 if ((val & 0xff) != 0xff) 1894 sc->rffreq = val & 0xff; 1895 1896 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1897 1898 /* read Tx power for all a/b/g channels */ 1899 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1900 /* XXX default Tx power for 802.11a channels */ 1901 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1902 #ifdef RUM_DEBUG 1903 for (i = 0; i < 14; i++) 1904 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1905 #endif 1906 1907 /* read default values for BBP registers */ 1908 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1909 #ifdef RUM_DEBUG 1910 for (i = 0; i < 14; i++) { 1911 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1912 continue; 1913 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1914 sc->bbp_prom[i].val)); 1915 } 1916 #endif 1917 } 1918 1919 Static int 1920 rum_bbp_init(struct rum_softc *sc) 1921 { 1922 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1923 int i, ntries; 1924 uint8_t val; 1925 1926 /* wait for BBP to be ready */ 1927 for (ntries = 0; ntries < 100; ntries++) { 1928 val = rum_bbp_read(sc, 0); 1929 if (val != 0 && val != 0xff) 1930 break; 1931 DELAY(1000); 1932 } 1933 if (ntries == 100) { 1934 printf("%s: timeout waiting for BBP\n", 1935 USBDEVNAME(sc->sc_dev)); 1936 return EIO; 1937 } 1938 1939 /* initialize BBP registers to default values */ 1940 for (i = 0; i < N(rum_def_bbp); i++) 1941 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1942 1943 /* write vendor-specific BBP values (from EEPROM) */ 1944 for (i = 0; i < 16; i++) { 1945 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1946 continue; 1947 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1948 } 1949 1950 return 0; 1951 #undef N 1952 } 1953 1954 Static int 1955 rum_init(struct ifnet *ifp) 1956 { 1957 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1958 struct rum_softc *sc = ifp->if_softc; 1959 struct ieee80211com *ic = &sc->sc_ic; 1960 struct rum_rx_data *data; 1961 uint32_t tmp; 1962 usbd_status error = 0; 1963 int i, ntries; 1964 1965 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1966 if (rum_attachhook(sc)) 1967 goto fail; 1968 } 1969 1970 rum_stop(ifp, 0); 1971 1972 /* initialize MAC registers to default values */ 1973 for (i = 0; i < N(rum_def_mac); i++) 1974 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1975 1976 /* set host ready */ 1977 rum_write(sc, RT2573_MAC_CSR1, 3); 1978 rum_write(sc, RT2573_MAC_CSR1, 0); 1979 1980 /* wait for BBP/RF to wakeup */ 1981 for (ntries = 0; ntries < 1000; ntries++) { 1982 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1983 break; 1984 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1985 DELAY(1000); 1986 } 1987 if (ntries == 1000) { 1988 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1989 USBDEVNAME(sc->sc_dev)); 1990 goto fail; 1991 } 1992 1993 if ((error = rum_bbp_init(sc)) != 0) 1994 goto fail; 1995 1996 /* select default channel */ 1997 rum_select_band(sc, ic->ic_curchan); 1998 rum_select_antenna(sc); 1999 rum_set_chan(sc, ic->ic_curchan); 2000 2001 /* clear STA registers */ 2002 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2003 2004 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2005 rum_set_macaddr(sc, ic->ic_myaddr); 2006 2007 /* initialize ASIC */ 2008 rum_write(sc, RT2573_MAC_CSR1, 4); 2009 2010 /* 2011 * Allocate xfer for AMRR statistics requests. 2012 */ 2013 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 2014 if (sc->amrr_xfer == NULL) { 2015 printf("%s: could not allocate AMRR xfer\n", 2016 USBDEVNAME(sc->sc_dev)); 2017 goto fail; 2018 } 2019 2020 /* 2021 * Open Tx and Rx USB bulk pipes. 2022 */ 2023 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2024 &sc->sc_tx_pipeh); 2025 if (error != 0) { 2026 printf("%s: could not open Tx pipe: %s\n", 2027 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2028 goto fail; 2029 } 2030 2031 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2032 &sc->sc_rx_pipeh); 2033 if (error != 0) { 2034 printf("%s: could not open Rx pipe: %s\n", 2035 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2036 goto fail; 2037 } 2038 2039 /* 2040 * Allocate Tx and Rx xfer queues. 2041 */ 2042 error = rum_alloc_tx_list(sc); 2043 if (error != 0) { 2044 printf("%s: could not allocate Tx list\n", 2045 USBDEVNAME(sc->sc_dev)); 2046 goto fail; 2047 } 2048 2049 error = rum_alloc_rx_list(sc); 2050 if (error != 0) { 2051 printf("%s: could not allocate Rx list\n", 2052 USBDEVNAME(sc->sc_dev)); 2053 goto fail; 2054 } 2055 2056 /* 2057 * Start up the receive pipe. 2058 */ 2059 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2060 data = &sc->rx_data[i]; 2061 2062 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2063 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2064 error = usbd_transfer(data->xfer); 2065 if (error != USBD_NORMAL_COMPLETION && 2066 error != USBD_IN_PROGRESS) { 2067 printf("%s: could not queue Rx transfer\n", 2068 USBDEVNAME(sc->sc_dev)); 2069 goto fail; 2070 } 2071 } 2072 2073 /* update Rx filter */ 2074 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2075 2076 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2077 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2078 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2079 RT2573_DROP_ACKCTS; 2080 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2081 tmp |= RT2573_DROP_TODS; 2082 if (!(ifp->if_flags & IFF_PROMISC)) 2083 tmp |= RT2573_DROP_NOT_TO_ME; 2084 } 2085 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2086 2087 ifp->if_flags &= ~IFF_OACTIVE; 2088 ifp->if_flags |= IFF_RUNNING; 2089 2090 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2091 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2092 else 2093 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2094 2095 return 0; 2096 2097 fail: rum_stop(ifp, 1); 2098 return error; 2099 #undef N 2100 } 2101 2102 Static void 2103 rum_stop(struct ifnet *ifp, int disable) 2104 { 2105 struct rum_softc *sc = ifp->if_softc; 2106 struct ieee80211com *ic = &sc->sc_ic; 2107 uint32_t tmp; 2108 2109 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2110 2111 sc->sc_tx_timer = 0; 2112 ifp->if_timer = 0; 2113 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2114 2115 /* disable Rx */ 2116 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2117 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2118 2119 /* reset ASIC */ 2120 rum_write(sc, RT2573_MAC_CSR1, 3); 2121 rum_write(sc, RT2573_MAC_CSR1, 0); 2122 2123 if (sc->sc_rx_pipeh != NULL) { 2124 usbd_abort_pipe(sc->sc_rx_pipeh); 2125 usbd_close_pipe(sc->sc_rx_pipeh); 2126 sc->sc_rx_pipeh = NULL; 2127 } 2128 2129 if (sc->sc_tx_pipeh != NULL) { 2130 usbd_abort_pipe(sc->sc_tx_pipeh); 2131 usbd_close_pipe(sc->sc_tx_pipeh); 2132 sc->sc_tx_pipeh = NULL; 2133 } 2134 2135 rum_free_rx_list(sc); 2136 rum_free_tx_list(sc); 2137 } 2138 2139 Static int 2140 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2141 { 2142 usb_device_request_t req; 2143 uint16_t reg = RT2573_MCU_CODE_BASE; 2144 usbd_status error; 2145 2146 /* copy firmware image into NIC */ 2147 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2148 rum_write(sc, reg, UGETDW(ucode)); 2149 2150 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2151 req.bRequest = RT2573_MCU_CNTL; 2152 USETW(req.wValue, RT2573_MCU_RUN); 2153 USETW(req.wIndex, 0); 2154 USETW(req.wLength, 0); 2155 2156 error = usbd_do_request(sc->sc_udev, &req, NULL); 2157 if (error != 0) { 2158 printf("%s: could not run firmware: %s\n", 2159 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2160 } 2161 return error; 2162 } 2163 2164 Static int 2165 rum_prepare_beacon(struct rum_softc *sc) 2166 { 2167 struct ieee80211com *ic = &sc->sc_ic; 2168 struct rum_tx_desc desc; 2169 struct mbuf *m0; 2170 int rate; 2171 2172 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2173 if (m0 == NULL) { 2174 printf("%s: could not allocate beacon frame\n", 2175 sc->sc_dev.dv_xname); 2176 return ENOBUFS; 2177 } 2178 2179 /* send beacons at the lowest available rate */ 2180 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2181 2182 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2183 m0->m_pkthdr.len, rate); 2184 2185 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2186 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2187 2188 /* copy beacon header and payload into NIC memory */ 2189 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2190 m0->m_pkthdr.len); 2191 2192 m_freem(m0); 2193 2194 return 0; 2195 } 2196 2197 Static void 2198 rum_newassoc(struct ieee80211_node *ni, int isnew) 2199 { 2200 /* start with lowest Tx rate */ 2201 ni->ni_txrate = 0; 2202 } 2203 2204 Static void 2205 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2206 { 2207 int i; 2208 2209 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2210 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2211 2212 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2213 2214 /* set rate to some reasonable initial value */ 2215 for (i = ni->ni_rates.rs_nrates - 1; 2216 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2217 i--); 2218 ni->ni_txrate = i; 2219 2220 usb_callout(sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2221 } 2222 2223 Static void 2224 rum_amrr_timeout(void *arg) 2225 { 2226 struct rum_softc *sc = arg; 2227 usb_device_request_t req; 2228 2229 /* 2230 * Asynchronously read statistic registers (cleared by read). 2231 */ 2232 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2233 req.bRequest = RT2573_READ_MULTI_MAC; 2234 USETW(req.wValue, 0); 2235 USETW(req.wIndex, RT2573_STA_CSR0); 2236 USETW(req.wLength, sizeof sc->sta); 2237 2238 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2239 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2240 rum_amrr_update); 2241 (void)usbd_transfer(sc->amrr_xfer); 2242 } 2243 2244 Static void 2245 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2246 usbd_status status) 2247 { 2248 struct rum_softc *sc = (struct rum_softc *)priv; 2249 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2250 2251 if (status != USBD_NORMAL_COMPLETION) { 2252 printf("%s: could not retrieve Tx statistics - cancelling " 2253 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2254 return; 2255 } 2256 2257 /* count TX retry-fail as Tx errors */ 2258 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2259 2260 sc->amn.amn_retrycnt = 2261 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2262 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2263 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2264 2265 sc->amn.amn_txcnt = 2266 sc->amn.amn_retrycnt + 2267 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2268 2269 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2270 2271 usb_callout(sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2272 } 2273 2274 int 2275 rum_activate(device_ptr_t self, enum devact act) 2276 { 2277 switch (act) { 2278 case DVACT_ACTIVATE: 2279 return EOPNOTSUPP; 2280 2281 case DVACT_DEACTIVATE: 2282 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2283 break; 2284 } 2285 2286 return 0; 2287 } 2288
Indexes created Wed Sep 24 05:09:52 GMT 2025