1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.25 2009/01/03 03:43:22 yamt Exp $ */ 3 4 /*- 5 * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini@free.fr> 6 * Copyright (c) 2006 Niall O'Higgins <niallo@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 1.25 2009/01/03 03:43:22 yamt 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_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GPX }, 106 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 107 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 108 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 109 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 110 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 111 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWI05GS }, 112 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 113 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 114 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254LB }, 115 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254V2AP }, 116 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 117 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_G54HP }, 118 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, 119 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 120 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 121 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 122 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_4 }, 123 { USB_VENDOR_NOVATECH, USB_PRODUCT_NOVATECH_RT2573 }, 124 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54HP }, 125 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 126 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 127 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 128 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 129 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_3 }, 130 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 131 { USB_VENDOR_RALINK_2, USB_PRODUCT_RALINK_2_RT2573 }, 132 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 133 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 134 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 135 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 136 }; 137 138 Static int rum_attachhook(void *); 139 Static int rum_alloc_tx_list(struct rum_softc *); 140 Static void rum_free_tx_list(struct rum_softc *); 141 Static int rum_alloc_rx_list(struct rum_softc *); 142 Static void rum_free_rx_list(struct rum_softc *); 143 Static int rum_media_change(struct ifnet *); 144 Static void rum_next_scan(void *); 145 Static void rum_task(void *); 146 Static int rum_newstate(struct ieee80211com *, 147 enum ieee80211_state, int); 148 Static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 149 usbd_status); 150 Static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 151 usbd_status); 152 #if NBPFILTER > 0 153 Static uint8_t rum_rxrate(const struct rum_rx_desc *); 154 #endif 155 Static int rum_ack_rate(struct ieee80211com *, int); 156 Static uint16_t rum_txtime(int, int, uint32_t); 157 Static uint8_t rum_plcp_signal(int); 158 Static void rum_setup_tx_desc(struct rum_softc *, 159 struct rum_tx_desc *, uint32_t, uint16_t, int, 160 int); 161 Static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 162 struct ieee80211_node *); 163 Static int rum_tx_data(struct rum_softc *, struct mbuf *, 164 struct ieee80211_node *); 165 Static void rum_start(struct ifnet *); 166 Static void rum_watchdog(struct ifnet *); 167 Static int rum_ioctl(struct ifnet *, u_long, void *); 168 Static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 169 int); 170 Static uint32_t rum_read(struct rum_softc *, uint16_t); 171 Static void rum_read_multi(struct rum_softc *, uint16_t, void *, 172 int); 173 Static void rum_write(struct rum_softc *, uint16_t, uint32_t); 174 Static void rum_write_multi(struct rum_softc *, uint16_t, void *, 175 size_t); 176 Static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 177 Static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 178 Static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 179 Static void rum_select_antenna(struct rum_softc *); 180 Static void rum_enable_mrr(struct rum_softc *); 181 Static void rum_set_txpreamble(struct rum_softc *); 182 Static void rum_set_basicrates(struct rum_softc *); 183 Static void rum_select_band(struct rum_softc *, 184 struct ieee80211_channel *); 185 Static void rum_set_chan(struct rum_softc *, 186 struct ieee80211_channel *); 187 Static void rum_enable_tsf_sync(struct rum_softc *); 188 Static void rum_update_slot(struct rum_softc *); 189 Static void rum_set_bssid(struct rum_softc *, const uint8_t *); 190 Static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 191 Static void rum_update_promisc(struct rum_softc *); 192 Static const char *rum_get_rf(int); 193 Static void rum_read_eeprom(struct rum_softc *); 194 Static int rum_bbp_init(struct rum_softc *); 195 Static int rum_init(struct ifnet *); 196 Static void rum_stop(struct ifnet *, int); 197 Static int rum_load_microcode(struct rum_softc *, const u_char *, 198 size_t); 199 Static int rum_prepare_beacon(struct rum_softc *); 200 Static void rum_newassoc(struct ieee80211_node *, int); 201 Static void rum_amrr_start(struct rum_softc *, 202 struct ieee80211_node *); 203 Static void rum_amrr_timeout(void *); 204 Static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 205 usbd_status status); 206 207 /* 208 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 209 */ 210 static const struct ieee80211_rateset rum_rateset_11a = 211 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 212 213 static const struct ieee80211_rateset rum_rateset_11b = 214 { 4, { 2, 4, 11, 22 } }; 215 216 static const struct ieee80211_rateset rum_rateset_11g = 217 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 218 219 static const struct { 220 uint32_t reg; 221 uint32_t val; 222 } rum_def_mac[] = { 223 RT2573_DEF_MAC 224 }; 225 226 static const struct { 227 uint8_t reg; 228 uint8_t val; 229 } rum_def_bbp[] = { 230 RT2573_DEF_BBP 231 }; 232 233 static const struct rfprog { 234 uint8_t chan; 235 uint32_t r1, r2, r3, r4; 236 } rum_rf5226[] = { 237 RT2573_RF5226 238 }, rum_rf5225[] = { 239 RT2573_RF5225 240 }; 241 242 USB_DECLARE_DRIVER(rum); 243 244 USB_MATCH(rum) 245 { 246 USB_MATCH_START(rum, uaa); 247 248 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 249 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 250 } 251 252 Static int 253 rum_attachhook(void *xsc) 254 { 255 struct rum_softc *sc = xsc; 256 firmware_handle_t fwh; 257 const char *name = "rum-rt2573"; 258 u_char *ucode; 259 size_t size; 260 int error; 261 262 if ((error = firmware_open("rum", name, &fwh)) != 0) { 263 printf("%s: failed loadfirmware of file %s (error %d)\n", 264 USBDEVNAME(sc->sc_dev), name, error); 265 return error; 266 } 267 size = firmware_get_size(fwh); 268 ucode = firmware_malloc(size); 269 if (ucode == NULL) { 270 printf("%s: failed to allocate firmware memory\n", 271 USBDEVNAME(sc->sc_dev)); 272 firmware_close(fwh); 273 return ENOMEM; 274 } 275 error = firmware_read(fwh, 0, ucode, size); 276 firmware_close(fwh); 277 if (error != 0) { 278 printf("%s: failed to read firmware (error %d)\n", 279 USBDEVNAME(sc->sc_dev), error); 280 firmware_free(ucode, 0); 281 return error; 282 } 283 284 if (rum_load_microcode(sc, ucode, size) != 0) { 285 printf("%s: could not load 8051 microcode\n", 286 USBDEVNAME(sc->sc_dev)); 287 firmware_free(ucode, 0); 288 return ENXIO; 289 } 290 291 firmware_free(ucode, 0); 292 sc->sc_flags |= RT2573_FWLOADED; 293 294 return 0; 295 } 296 297 USB_ATTACH(rum) 298 { 299 USB_ATTACH_START(rum, sc, uaa); 300 struct ieee80211com *ic = &sc->sc_ic; 301 struct ifnet *ifp = &sc->sc_if; 302 usb_interface_descriptor_t *id; 303 usb_endpoint_descriptor_t *ed; 304 usbd_status error; 305 char *devinfop; 306 int i, ntries; 307 uint32_t tmp; 308 309 sc->sc_dev = self; 310 sc->sc_udev = uaa->device; 311 sc->sc_flags = 0; 312 313 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 314 USB_ATTACH_SETUP; 315 aprint_normal_dev(self, "%s\n", devinfop); 316 usbd_devinfo_free(devinfop); 317 318 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 319 aprint_error_dev(self, "could not set configuration no\n"); 320 USB_ATTACH_ERROR_RETURN; 321 } 322 323 /* get the first interface handle */ 324 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 325 &sc->sc_iface); 326 if (error != 0) { 327 aprint_error_dev(self, "could not get interface handle\n"); 328 USB_ATTACH_ERROR_RETURN; 329 } 330 331 /* 332 * Find endpoints. 333 */ 334 id = usbd_get_interface_descriptor(sc->sc_iface); 335 336 sc->sc_rx_no = sc->sc_tx_no = -1; 337 for (i = 0; i < id->bNumEndpoints; i++) { 338 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 339 if (ed == NULL) { 340 aprint_error_dev(self, 341 "no endpoint descriptor for iface %d\n", i); 342 USB_ATTACH_ERROR_RETURN; 343 } 344 345 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 346 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 347 sc->sc_rx_no = ed->bEndpointAddress; 348 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 349 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 350 sc->sc_tx_no = ed->bEndpointAddress; 351 } 352 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 353 aprint_error_dev(self, "missing endpoint\n"); 354 USB_ATTACH_ERROR_RETURN; 355 } 356 357 usb_init_task(&sc->sc_task, rum_task, sc); 358 usb_callout_init(sc->sc_scan_ch); 359 360 sc->amrr.amrr_min_success_threshold = 1; 361 sc->amrr.amrr_max_success_threshold = 10; 362 usb_callout_init(sc->sc_amrr_ch); 363 364 /* retrieve RT2573 rev. no */ 365 for (ntries = 0; ntries < 1000; ntries++) { 366 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 367 break; 368 DELAY(1000); 369 } 370 if (ntries == 1000) { 371 aprint_error_dev(self, "timeout waiting for chip to settle\n"); 372 USB_ATTACH_ERROR_RETURN; 373 } 374 375 /* retrieve MAC address and various other things from EEPROM */ 376 rum_read_eeprom(sc); 377 378 aprint_normal_dev(self, 379 "MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 380 sc->macbbp_rev, tmp, 381 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 382 383 ic->ic_ifp = ifp; 384 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 385 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 386 ic->ic_state = IEEE80211_S_INIT; 387 388 /* set device capabilities */ 389 ic->ic_caps = 390 IEEE80211_C_IBSS | /* IBSS mode supported */ 391 IEEE80211_C_MONITOR | /* monitor mode supported */ 392 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 393 IEEE80211_C_TXPMGT | /* tx power management */ 394 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 395 IEEE80211_C_SHSLOT | /* short slot time supported */ 396 IEEE80211_C_WPA; /* 802.11i */ 397 398 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 399 /* set supported .11a rates */ 400 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 401 402 /* set supported .11a channels */ 403 for (i = 34; i <= 46; i += 4) { 404 ic->ic_channels[i].ic_freq = 405 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 406 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 407 } 408 for (i = 36; i <= 64; i += 4) { 409 ic->ic_channels[i].ic_freq = 410 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 411 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 412 } 413 for (i = 100; i <= 140; i += 4) { 414 ic->ic_channels[i].ic_freq = 415 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 416 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 417 } 418 for (i = 149; i <= 165; i += 4) { 419 ic->ic_channels[i].ic_freq = 420 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 421 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 422 } 423 } 424 425 /* set supported .11b and .11g rates */ 426 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 427 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 428 429 /* set supported .11b and .11g channels (1 through 14) */ 430 for (i = 1; i <= 14; i++) { 431 ic->ic_channels[i].ic_freq = 432 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 433 ic->ic_channels[i].ic_flags = 434 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 435 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 436 } 437 438 ifp->if_softc = sc; 439 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 440 ifp->if_init = rum_init; 441 ifp->if_ioctl = rum_ioctl; 442 ifp->if_start = rum_start; 443 ifp->if_watchdog = rum_watchdog; 444 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 445 IFQ_SET_READY(&ifp->if_snd); 446 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 447 448 if_attach(ifp); 449 ieee80211_ifattach(ic); 450 ic->ic_newassoc = rum_newassoc; 451 452 /* override state transition machine */ 453 sc->sc_newstate = ic->ic_newstate; 454 ic->ic_newstate = rum_newstate; 455 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 456 457 #if NBPFILTER > 0 458 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 459 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 460 461 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 462 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 463 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 464 465 sc->sc_txtap_len = sizeof sc->sc_txtapu; 466 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 467 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 468 #endif 469 470 ieee80211_announce(ic); 471 472 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 473 USBDEV(sc->sc_dev)); 474 475 USB_ATTACH_SUCCESS_RETURN; 476 } 477 478 USB_DETACH(rum) 479 { 480 USB_DETACH_START(rum, sc); 481 struct ieee80211com *ic = &sc->sc_ic; 482 struct ifnet *ifp = &sc->sc_if; 483 int s; 484 485 if (!ifp->if_softc) 486 return 0; 487 488 s = splusb(); 489 490 rum_stop(ifp, 1); 491 usb_rem_task(sc->sc_udev, &sc->sc_task); 492 usb_uncallout(sc->sc_scan_ch, rum_next_scan, sc); 493 usb_uncallout(sc->sc_amrr_ch, rum_amrr_timeout, sc); 494 495 if (sc->amrr_xfer != NULL) { 496 usbd_free_xfer(sc->amrr_xfer); 497 sc->amrr_xfer = NULL; 498 } 499 500 if (sc->sc_rx_pipeh != NULL) { 501 usbd_abort_pipe(sc->sc_rx_pipeh); 502 usbd_close_pipe(sc->sc_rx_pipeh); 503 } 504 505 if (sc->sc_tx_pipeh != NULL) { 506 usbd_abort_pipe(sc->sc_tx_pipeh); 507 usbd_close_pipe(sc->sc_tx_pipeh); 508 } 509 510 #if NBPFILTER > 0 511 bpfdetach(ifp); 512 #endif 513 ieee80211_ifdetach(ic); /* free all nodes */ 514 if_detach(ifp); 515 516 splx(s); 517 518 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 519 USBDEV(sc->sc_dev)); 520 521 return 0; 522 } 523 524 Static int 525 rum_alloc_tx_list(struct rum_softc *sc) 526 { 527 struct rum_tx_data *data; 528 int i, error; 529 530 sc->tx_queued = 0; 531 532 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 533 data = &sc->tx_data[i]; 534 535 data->sc = sc; 536 537 data->xfer = usbd_alloc_xfer(sc->sc_udev); 538 if (data->xfer == NULL) { 539 printf("%s: could not allocate tx xfer\n", 540 USBDEVNAME(sc->sc_dev)); 541 error = ENOMEM; 542 goto fail; 543 } 544 545 data->buf = usbd_alloc_buffer(data->xfer, 546 RT2573_TX_DESC_SIZE + MCLBYTES); 547 if (data->buf == NULL) { 548 printf("%s: could not allocate tx buffer\n", 549 USBDEVNAME(sc->sc_dev)); 550 error = ENOMEM; 551 goto fail; 552 } 553 554 /* clean Tx descriptor */ 555 bzero(data->buf, RT2573_TX_DESC_SIZE); 556 } 557 558 return 0; 559 560 fail: rum_free_tx_list(sc); 561 return error; 562 } 563 564 Static void 565 rum_free_tx_list(struct rum_softc *sc) 566 { 567 struct rum_tx_data *data; 568 int i; 569 570 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 571 data = &sc->tx_data[i]; 572 573 if (data->xfer != NULL) { 574 usbd_free_xfer(data->xfer); 575 data->xfer = NULL; 576 } 577 578 if (data->ni != NULL) { 579 ieee80211_free_node(data->ni); 580 data->ni = NULL; 581 } 582 } 583 } 584 585 Static int 586 rum_alloc_rx_list(struct rum_softc *sc) 587 { 588 struct rum_rx_data *data; 589 int i, error; 590 591 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 592 data = &sc->rx_data[i]; 593 594 data->sc = sc; 595 596 data->xfer = usbd_alloc_xfer(sc->sc_udev); 597 if (data->xfer == NULL) { 598 printf("%s: could not allocate rx xfer\n", 599 USBDEVNAME(sc->sc_dev)); 600 error = ENOMEM; 601 goto fail; 602 } 603 604 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 605 printf("%s: could not allocate rx buffer\n", 606 USBDEVNAME(sc->sc_dev)); 607 error = ENOMEM; 608 goto fail; 609 } 610 611 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 612 if (data->m == NULL) { 613 printf("%s: could not allocate rx mbuf\n", 614 USBDEVNAME(sc->sc_dev)); 615 error = ENOMEM; 616 goto fail; 617 } 618 619 MCLGET(data->m, M_DONTWAIT); 620 if (!(data->m->m_flags & M_EXT)) { 621 printf("%s: could not allocate rx mbuf cluster\n", 622 USBDEVNAME(sc->sc_dev)); 623 error = ENOMEM; 624 goto fail; 625 } 626 627 data->buf = mtod(data->m, uint8_t *); 628 } 629 630 return 0; 631 632 fail: rum_free_tx_list(sc); 633 return error; 634 } 635 636 Static void 637 rum_free_rx_list(struct rum_softc *sc) 638 { 639 struct rum_rx_data *data; 640 int i; 641 642 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 643 data = &sc->rx_data[i]; 644 645 if (data->xfer != NULL) { 646 usbd_free_xfer(data->xfer); 647 data->xfer = NULL; 648 } 649 650 if (data->m != NULL) { 651 m_freem(data->m); 652 data->m = NULL; 653 } 654 } 655 } 656 657 Static int 658 rum_media_change(struct ifnet *ifp) 659 { 660 int error; 661 662 error = ieee80211_media_change(ifp); 663 if (error != ENETRESET) 664 return error; 665 666 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 667 rum_init(ifp); 668 669 return 0; 670 } 671 672 /* 673 * This function is called periodically (every 200ms) during scanning to 674 * switch from one channel to another. 675 */ 676 Static void 677 rum_next_scan(void *arg) 678 { 679 struct rum_softc *sc = arg; 680 struct ieee80211com *ic = &sc->sc_ic; 681 682 if (ic->ic_state == IEEE80211_S_SCAN) 683 ieee80211_next_scan(ic); 684 } 685 686 Static void 687 rum_task(void *arg) 688 { 689 struct rum_softc *sc = arg; 690 struct ieee80211com *ic = &sc->sc_ic; 691 enum ieee80211_state ostate; 692 struct ieee80211_node *ni; 693 uint32_t tmp; 694 695 ostate = ic->ic_state; 696 697 switch (sc->sc_state) { 698 case IEEE80211_S_INIT: 699 if (ostate == IEEE80211_S_RUN) { 700 /* abort TSF synchronization */ 701 tmp = rum_read(sc, RT2573_TXRX_CSR9); 702 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 703 } 704 break; 705 706 case IEEE80211_S_SCAN: 707 rum_set_chan(sc, ic->ic_curchan); 708 usb_callout(sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 709 break; 710 711 case IEEE80211_S_AUTH: 712 rum_set_chan(sc, ic->ic_curchan); 713 break; 714 715 case IEEE80211_S_ASSOC: 716 rum_set_chan(sc, ic->ic_curchan); 717 break; 718 719 case IEEE80211_S_RUN: 720 rum_set_chan(sc, ic->ic_curchan); 721 722 ni = ic->ic_bss; 723 724 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 725 rum_update_slot(sc); 726 rum_enable_mrr(sc); 727 rum_set_txpreamble(sc); 728 rum_set_basicrates(sc); 729 rum_set_bssid(sc, ni->ni_bssid); 730 } 731 732 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 733 ic->ic_opmode == IEEE80211_M_IBSS) 734 rum_prepare_beacon(sc); 735 736 if (ic->ic_opmode != IEEE80211_M_MONITOR) 737 rum_enable_tsf_sync(sc); 738 739 if (ic->ic_opmode == IEEE80211_M_STA) { 740 /* fake a join to init the tx rate */ 741 rum_newassoc(ic->ic_bss, 1); 742 743 /* enable automatic rate adaptation in STA mode */ 744 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 745 rum_amrr_start(sc, ni); 746 } 747 748 break; 749 } 750 751 sc->sc_newstate(ic, sc->sc_state, -1); 752 } 753 754 Static int 755 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 756 { 757 struct rum_softc *sc = ic->ic_ifp->if_softc; 758 759 usb_rem_task(sc->sc_udev, &sc->sc_task); 760 usb_uncallout(sc->sc_scan_ch, rum_next_scan, sc); 761 usb_uncallout(sc->sc_amrr_ch, rum_amrr_timeout, sc); 762 763 /* do it in a process context */ 764 sc->sc_state = nstate; 765 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 766 767 return 0; 768 } 769 770 /* quickly determine if a given rate is CCK or OFDM */ 771 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 772 773 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 774 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 775 776 Static void 777 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 778 { 779 struct rum_tx_data *data = priv; 780 struct rum_softc *sc = data->sc; 781 struct ifnet *ifp = &sc->sc_if; 782 int s; 783 784 if (status != USBD_NORMAL_COMPLETION) { 785 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 786 return; 787 788 printf("%s: could not transmit buffer: %s\n", 789 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 790 791 if (status == USBD_STALLED) 792 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 793 794 ifp->if_oerrors++; 795 return; 796 } 797 798 s = splnet(); 799 800 ieee80211_free_node(data->ni); 801 data->ni = NULL; 802 803 sc->tx_queued--; 804 ifp->if_opackets++; 805 806 DPRINTFN(10, ("tx done\n")); 807 808 sc->sc_tx_timer = 0; 809 ifp->if_flags &= ~IFF_OACTIVE; 810 rum_start(ifp); 811 812 splx(s); 813 } 814 815 Static void 816 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 817 { 818 struct rum_rx_data *data = priv; 819 struct rum_softc *sc = data->sc; 820 struct ieee80211com *ic = &sc->sc_ic; 821 struct ifnet *ifp = &sc->sc_if; 822 struct rum_rx_desc *desc; 823 struct ieee80211_frame *wh; 824 struct ieee80211_node *ni; 825 struct mbuf *mnew, *m; 826 int s, len; 827 828 if (status != USBD_NORMAL_COMPLETION) { 829 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 830 return; 831 832 if (status == USBD_STALLED) 833 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 834 goto skip; 835 } 836 837 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 838 839 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 840 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 841 len)); 842 ifp->if_ierrors++; 843 goto skip; 844 } 845 846 desc = (struct rum_rx_desc *)data->buf; 847 848 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 849 /* 850 * This should not happen since we did not request to receive 851 * those frames when we filled RT2573_TXRX_CSR0. 852 */ 853 DPRINTFN(5, ("CRC error\n")); 854 ifp->if_ierrors++; 855 goto skip; 856 } 857 858 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 859 if (mnew == NULL) { 860 printf("%s: could not allocate rx mbuf\n", 861 USBDEVNAME(sc->sc_dev)); 862 ifp->if_ierrors++; 863 goto skip; 864 } 865 866 MCLGET(mnew, M_DONTWAIT); 867 if (!(mnew->m_flags & M_EXT)) { 868 printf("%s: could not allocate rx mbuf cluster\n", 869 USBDEVNAME(sc->sc_dev)); 870 m_freem(mnew); 871 ifp->if_ierrors++; 872 goto skip; 873 } 874 875 m = data->m; 876 data->m = mnew; 877 data->buf = mtod(data->m, uint8_t *); 878 879 /* finalize mbuf */ 880 m->m_pkthdr.rcvif = ifp; 881 m->m_data = (void *)(desc + 1); 882 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 883 884 s = splnet(); 885 886 #if NBPFILTER > 0 887 if (sc->sc_drvbpf != NULL) { 888 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 889 890 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 891 tap->wr_rate = rum_rxrate(desc); 892 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 893 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 894 tap->wr_antenna = sc->rx_ant; 895 tap->wr_antsignal = desc->rssi; 896 897 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 898 } 899 #endif 900 901 wh = mtod(m, struct ieee80211_frame *); 902 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 903 904 /* send the frame to the 802.11 layer */ 905 ieee80211_input(ic, m, ni, desc->rssi, 0); 906 907 /* node is no longer needed */ 908 ieee80211_free_node(ni); 909 910 splx(s); 911 912 DPRINTFN(15, ("rx done\n")); 913 914 skip: /* setup a new transfer */ 915 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 916 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 917 usbd_transfer(xfer); 918 } 919 920 /* 921 * This function is only used by the Rx radiotap code. It returns the rate at 922 * which a given frame was received. 923 */ 924 #if NBPFILTER > 0 925 Static uint8_t 926 rum_rxrate(const struct rum_rx_desc *desc) 927 { 928 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 929 /* reverse function of rum_plcp_signal */ 930 switch (desc->rate) { 931 case 0xb: return 12; 932 case 0xf: return 18; 933 case 0xa: return 24; 934 case 0xe: return 36; 935 case 0x9: return 48; 936 case 0xd: return 72; 937 case 0x8: return 96; 938 case 0xc: return 108; 939 } 940 } else { 941 if (desc->rate == 10) 942 return 2; 943 if (desc->rate == 20) 944 return 4; 945 if (desc->rate == 55) 946 return 11; 947 if (desc->rate == 110) 948 return 22; 949 } 950 return 2; /* should not get there */ 951 } 952 #endif 953 954 /* 955 * Return the expected ack rate for a frame transmitted at rate `rate'. 956 * XXX: this should depend on the destination node basic rate set. 957 */ 958 Static int 959 rum_ack_rate(struct ieee80211com *ic, int rate) 960 { 961 switch (rate) { 962 /* CCK rates */ 963 case 2: 964 return 2; 965 case 4: 966 case 11: 967 case 22: 968 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 969 970 /* OFDM rates */ 971 case 12: 972 case 18: 973 return 12; 974 case 24: 975 case 36: 976 return 24; 977 case 48: 978 case 72: 979 case 96: 980 case 108: 981 return 48; 982 } 983 984 /* default to 1Mbps */ 985 return 2; 986 } 987 988 /* 989 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 990 * The function automatically determines the operating mode depending on the 991 * given rate. `flags' indicates whether short preamble is in use or not. 992 */ 993 Static uint16_t 994 rum_txtime(int len, int rate, uint32_t flags) 995 { 996 uint16_t txtime; 997 998 if (RUM_RATE_IS_OFDM(rate)) { 999 /* IEEE Std 802.11a-1999, pp. 37 */ 1000 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 1001 txtime = 16 + 4 + 4 * txtime + 6; 1002 } else { 1003 /* IEEE Std 802.11b-1999, pp. 28 */ 1004 txtime = (16 * len + rate - 1) / rate; 1005 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1006 txtime += 72 + 24; 1007 else 1008 txtime += 144 + 48; 1009 } 1010 return txtime; 1011 } 1012 1013 Static uint8_t 1014 rum_plcp_signal(int rate) 1015 { 1016 switch (rate) { 1017 /* CCK rates (returned values are device-dependent) */ 1018 case 2: return 0x0; 1019 case 4: return 0x1; 1020 case 11: return 0x2; 1021 case 22: return 0x3; 1022 1023 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1024 case 12: return 0xb; 1025 case 18: return 0xf; 1026 case 24: return 0xa; 1027 case 36: return 0xe; 1028 case 48: return 0x9; 1029 case 72: return 0xd; 1030 case 96: return 0x8; 1031 case 108: return 0xc; 1032 1033 /* unsupported rates (should not get there) */ 1034 default: return 0xff; 1035 } 1036 } 1037 1038 Static void 1039 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1040 uint32_t flags, uint16_t xflags, int len, int rate) 1041 { 1042 struct ieee80211com *ic = &sc->sc_ic; 1043 uint16_t plcp_length; 1044 int remainder; 1045 1046 desc->flags = htole32(flags); 1047 desc->flags |= htole32(RT2573_TX_VALID); 1048 desc->flags |= htole32(len << 16); 1049 1050 desc->xflags = htole16(xflags); 1051 1052 desc->wme = htole16( 1053 RT2573_QID(0) | 1054 RT2573_AIFSN(2) | 1055 RT2573_LOGCWMIN(4) | 1056 RT2573_LOGCWMAX(10)); 1057 1058 /* setup PLCP fields */ 1059 desc->plcp_signal = rum_plcp_signal(rate); 1060 desc->plcp_service = 4; 1061 1062 len += IEEE80211_CRC_LEN; 1063 if (RUM_RATE_IS_OFDM(rate)) { 1064 desc->flags |= htole32(RT2573_TX_OFDM); 1065 1066 plcp_length = len & 0xfff; 1067 desc->plcp_length_hi = plcp_length >> 6; 1068 desc->plcp_length_lo = plcp_length & 0x3f; 1069 } else { 1070 plcp_length = (16 * len + rate - 1) / rate; 1071 if (rate == 22) { 1072 remainder = (16 * len) % 22; 1073 if (remainder != 0 && remainder < 7) 1074 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1075 } 1076 desc->plcp_length_hi = plcp_length >> 8; 1077 desc->plcp_length_lo = plcp_length & 0xff; 1078 1079 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1080 desc->plcp_signal |= 0x08; 1081 } 1082 } 1083 1084 #define RUM_TX_TIMEOUT 5000 1085 1086 Static int 1087 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1088 { 1089 struct ieee80211com *ic = &sc->sc_ic; 1090 struct rum_tx_desc *desc; 1091 struct rum_tx_data *data; 1092 struct ieee80211_frame *wh; 1093 struct ieee80211_key *k; 1094 uint32_t flags = 0; 1095 uint16_t dur; 1096 usbd_status error; 1097 int xferlen, rate; 1098 1099 data = &sc->tx_data[0]; 1100 desc = (struct rum_tx_desc *)data->buf; 1101 1102 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 1103 1104 data->m = m0; 1105 data->ni = ni; 1106 1107 wh = mtod(m0, struct ieee80211_frame *); 1108 1109 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1110 k = ieee80211_crypto_encap(ic, ni, m0); 1111 if (k == NULL) { 1112 m_freem(m0); 1113 return ENOBUFS; 1114 } 1115 } 1116 1117 wh = mtod(m0, struct ieee80211_frame *); 1118 1119 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1120 flags |= RT2573_TX_NEED_ACK; 1121 1122 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1123 ic->ic_flags) + sc->sifs; 1124 *(uint16_t *)wh->i_dur = htole16(dur); 1125 1126 /* tell hardware to set timestamp in probe responses */ 1127 if ((wh->i_fc[0] & 1128 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1129 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1130 flags |= RT2573_TX_TIMESTAMP; 1131 } 1132 1133 #if NBPFILTER > 0 1134 if (sc->sc_drvbpf != NULL) { 1135 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1136 1137 tap->wt_flags = 0; 1138 tap->wt_rate = rate; 1139 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1140 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1141 tap->wt_antenna = sc->tx_ant; 1142 1143 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1144 } 1145 #endif 1146 1147 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1148 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1149 1150 /* align end on a 4-bytes boundary */ 1151 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1152 1153 /* 1154 * No space left in the last URB to store the extra 4 bytes, force 1155 * sending of another URB. 1156 */ 1157 if ((xferlen % 64) == 0) 1158 xferlen += 4; 1159 1160 DPRINTFN(10, ("sending msg frame len=%zu rate=%u xfer len=%u\n", 1161 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1162 rate, xferlen)); 1163 1164 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1165 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1166 1167 error = usbd_transfer(data->xfer); 1168 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1169 m_freem(m0); 1170 return error; 1171 } 1172 1173 sc->tx_queued++; 1174 1175 return 0; 1176 } 1177 1178 Static int 1179 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1180 { 1181 struct ieee80211com *ic = &sc->sc_ic; 1182 struct rum_tx_desc *desc; 1183 struct rum_tx_data *data; 1184 struct ieee80211_frame *wh; 1185 struct ieee80211_key *k; 1186 uint32_t flags = 0; 1187 uint16_t dur; 1188 usbd_status error; 1189 int xferlen, rate; 1190 1191 wh = mtod(m0, struct ieee80211_frame *); 1192 1193 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1194 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1195 else 1196 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1197 if (rate == 0) 1198 rate = 2; /* XXX should not happen */ 1199 rate &= IEEE80211_RATE_VAL; 1200 1201 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1202 k = ieee80211_crypto_encap(ic, ni, m0); 1203 if (k == NULL) { 1204 m_freem(m0); 1205 return ENOBUFS; 1206 } 1207 1208 /* packet header may have moved, reset our local pointer */ 1209 wh = mtod(m0, struct ieee80211_frame *); 1210 } 1211 1212 data = &sc->tx_data[0]; 1213 desc = (struct rum_tx_desc *)data->buf; 1214 1215 data->ni = ni; 1216 1217 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1218 flags |= RT2573_TX_NEED_ACK; 1219 1220 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1221 ic->ic_flags) + sc->sifs; 1222 *(uint16_t *)wh->i_dur = htole16(dur); 1223 } 1224 1225 #if NBPFILTER > 0 1226 if (sc->sc_drvbpf != NULL) { 1227 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1228 1229 tap->wt_flags = 0; 1230 tap->wt_rate = rate; 1231 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1232 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1233 tap->wt_antenna = sc->tx_ant; 1234 1235 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1236 } 1237 #endif 1238 1239 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1240 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1241 1242 /* align end on a 4-bytes boundary */ 1243 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1244 1245 /* 1246 * No space left in the last URB to store the extra 4 bytes, force 1247 * sending of another URB. 1248 */ 1249 if ((xferlen % 64) == 0) 1250 xferlen += 4; 1251 1252 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1253 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1254 rate, xferlen)); 1255 1256 /* mbuf is no longer needed */ 1257 m_freem(m0); 1258 1259 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1260 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1261 1262 error = usbd_transfer(data->xfer); 1263 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1264 return error; 1265 1266 sc->tx_queued++; 1267 1268 return 0; 1269 } 1270 1271 Static void 1272 rum_start(struct ifnet *ifp) 1273 { 1274 struct rum_softc *sc = ifp->if_softc; 1275 struct ieee80211com *ic = &sc->sc_ic; 1276 struct ether_header *eh; 1277 struct ieee80211_node *ni; 1278 struct mbuf *m0; 1279 1280 for (;;) { 1281 IF_POLL(&ic->ic_mgtq, m0); 1282 if (m0 != NULL) { 1283 if (sc->tx_queued >= RUM_TX_LIST_COUNT) { 1284 ifp->if_flags |= IFF_OACTIVE; 1285 break; 1286 } 1287 IF_DEQUEUE(&ic->ic_mgtq, m0); 1288 1289 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1290 m0->m_pkthdr.rcvif = NULL; 1291 #if NBPFILTER > 0 1292 if (ic->ic_rawbpf != NULL) 1293 bpf_mtap(ic->ic_rawbpf, m0); 1294 #endif 1295 if (rum_tx_mgt(sc, m0, ni) != 0) 1296 break; 1297 1298 } else { 1299 if (ic->ic_state != IEEE80211_S_RUN) 1300 break; 1301 IFQ_POLL(&ifp->if_snd, m0); 1302 if (m0 == NULL) 1303 break; 1304 if (sc->tx_queued >= RUM_TX_LIST_COUNT) { 1305 ifp->if_flags |= IFF_OACTIVE; 1306 break; 1307 } 1308 IFQ_DEQUEUE(&ifp->if_snd, m0); 1309 if (m0->m_len < sizeof(struct ether_header) && 1310 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1311 continue; 1312 1313 eh = mtod(m0, struct ether_header *); 1314 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1315 if (ni == NULL) { 1316 m_freem(m0); 1317 continue; 1318 } 1319 #if NBPFILTER > 0 1320 if (ifp->if_bpf != NULL) 1321 bpf_mtap(ifp->if_bpf, m0); 1322 #endif 1323 m0 = ieee80211_encap(ic, m0, ni); 1324 if (m0 == NULL) { 1325 ieee80211_free_node(ni); 1326 continue; 1327 } 1328 #if NBPFILTER > 0 1329 if (ic->ic_rawbpf != NULL) 1330 bpf_mtap(ic->ic_rawbpf, m0); 1331 #endif 1332 if (rum_tx_data(sc, m0, ni) != 0) { 1333 ieee80211_free_node(ni); 1334 ifp->if_oerrors++; 1335 break; 1336 } 1337 } 1338 1339 sc->sc_tx_timer = 5; 1340 ifp->if_timer = 1; 1341 } 1342 } 1343 1344 Static void 1345 rum_watchdog(struct ifnet *ifp) 1346 { 1347 struct rum_softc *sc = ifp->if_softc; 1348 struct ieee80211com *ic = &sc->sc_ic; 1349 1350 ifp->if_timer = 0; 1351 1352 if (sc->sc_tx_timer > 0) { 1353 if (--sc->sc_tx_timer == 0) { 1354 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1355 /*rum_init(ifp); XXX needs a process context! */ 1356 ifp->if_oerrors++; 1357 return; 1358 } 1359 ifp->if_timer = 1; 1360 } 1361 1362 ieee80211_watchdog(ic); 1363 } 1364 1365 Static int 1366 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1367 { 1368 struct rum_softc *sc = ifp->if_softc; 1369 struct ieee80211com *ic = &sc->sc_ic; 1370 int s, error = 0; 1371 1372 s = splnet(); 1373 1374 switch (cmd) { 1375 case SIOCSIFFLAGS: 1376 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1377 break; 1378 /* XXX re-use ether_ioctl() */ 1379 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1380 case IFF_UP|IFF_RUNNING: 1381 rum_update_promisc(sc); 1382 break; 1383 case IFF_UP: 1384 rum_init(ifp); 1385 break; 1386 case IFF_RUNNING: 1387 rum_stop(ifp, 1); 1388 break; 1389 case 0: 1390 break; 1391 } 1392 break; 1393 1394 default: 1395 error = ieee80211_ioctl(ic, cmd, data); 1396 } 1397 1398 if (error == ENETRESET) { 1399 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1400 (IFF_UP | IFF_RUNNING)) 1401 rum_init(ifp); 1402 error = 0; 1403 } 1404 1405 splx(s); 1406 1407 return error; 1408 } 1409 1410 Static void 1411 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1412 { 1413 usb_device_request_t req; 1414 usbd_status error; 1415 1416 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1417 req.bRequest = RT2573_READ_EEPROM; 1418 USETW(req.wValue, 0); 1419 USETW(req.wIndex, addr); 1420 USETW(req.wLength, len); 1421 1422 error = usbd_do_request(sc->sc_udev, &req, buf); 1423 if (error != 0) { 1424 printf("%s: could not read EEPROM: %s\n", 1425 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1426 } 1427 } 1428 1429 Static uint32_t 1430 rum_read(struct rum_softc *sc, uint16_t reg) 1431 { 1432 uint32_t val; 1433 1434 rum_read_multi(sc, reg, &val, sizeof val); 1435 1436 return le32toh(val); 1437 } 1438 1439 Static void 1440 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1441 { 1442 usb_device_request_t req; 1443 usbd_status error; 1444 1445 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1446 req.bRequest = RT2573_READ_MULTI_MAC; 1447 USETW(req.wValue, 0); 1448 USETW(req.wIndex, reg); 1449 USETW(req.wLength, len); 1450 1451 error = usbd_do_request(sc->sc_udev, &req, buf); 1452 if (error != 0) { 1453 printf("%s: could not multi read MAC register: %s\n", 1454 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1455 } 1456 } 1457 1458 Static void 1459 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1460 { 1461 uint32_t tmp = htole32(val); 1462 1463 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1464 } 1465 1466 Static void 1467 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1468 { 1469 usb_device_request_t req; 1470 usbd_status error; 1471 1472 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1473 req.bRequest = RT2573_WRITE_MULTI_MAC; 1474 USETW(req.wValue, 0); 1475 USETW(req.wIndex, reg); 1476 USETW(req.wLength, len); 1477 1478 error = usbd_do_request(sc->sc_udev, &req, buf); 1479 if (error != 0) { 1480 printf("%s: could not multi write MAC register: %s\n", 1481 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1482 } 1483 } 1484 1485 Static void 1486 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1487 { 1488 uint32_t tmp; 1489 int ntries; 1490 1491 for (ntries = 0; ntries < 5; ntries++) { 1492 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1493 break; 1494 } 1495 if (ntries == 5) { 1496 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1497 return; 1498 } 1499 1500 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1501 rum_write(sc, RT2573_PHY_CSR3, tmp); 1502 } 1503 1504 Static uint8_t 1505 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1506 { 1507 uint32_t val; 1508 int ntries; 1509 1510 for (ntries = 0; ntries < 5; ntries++) { 1511 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1512 break; 1513 } 1514 if (ntries == 5) { 1515 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1516 return 0; 1517 } 1518 1519 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1520 rum_write(sc, RT2573_PHY_CSR3, val); 1521 1522 for (ntries = 0; ntries < 100; ntries++) { 1523 val = rum_read(sc, RT2573_PHY_CSR3); 1524 if (!(val & RT2573_BBP_BUSY)) 1525 return val & 0xff; 1526 DELAY(1); 1527 } 1528 1529 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1530 return 0; 1531 } 1532 1533 Static void 1534 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1535 { 1536 uint32_t tmp; 1537 int ntries; 1538 1539 for (ntries = 0; ntries < 5; ntries++) { 1540 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1541 break; 1542 } 1543 if (ntries == 5) { 1544 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1545 return; 1546 } 1547 1548 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1549 (reg & 3); 1550 rum_write(sc, RT2573_PHY_CSR4, tmp); 1551 1552 /* remember last written value in sc */ 1553 sc->rf_regs[reg] = val; 1554 1555 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1556 } 1557 1558 Static void 1559 rum_select_antenna(struct rum_softc *sc) 1560 { 1561 uint8_t bbp4, bbp77; 1562 uint32_t tmp; 1563 1564 bbp4 = rum_bbp_read(sc, 4); 1565 bbp77 = rum_bbp_read(sc, 77); 1566 1567 /* TBD */ 1568 1569 /* make sure Rx is disabled before switching antenna */ 1570 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1571 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1572 1573 rum_bbp_write(sc, 4, bbp4); 1574 rum_bbp_write(sc, 77, bbp77); 1575 1576 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1577 } 1578 1579 /* 1580 * Enable multi-rate retries for frames sent at OFDM rates. 1581 * In 802.11b/g mode, allow fallback to CCK rates. 1582 */ 1583 Static void 1584 rum_enable_mrr(struct rum_softc *sc) 1585 { 1586 struct ieee80211com *ic = &sc->sc_ic; 1587 uint32_t tmp; 1588 1589 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1590 1591 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1592 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1593 tmp |= RT2573_MRR_CCK_FALLBACK; 1594 tmp |= RT2573_MRR_ENABLED; 1595 1596 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1597 } 1598 1599 Static void 1600 rum_set_txpreamble(struct rum_softc *sc) 1601 { 1602 uint32_t tmp; 1603 1604 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1605 1606 tmp &= ~RT2573_SHORT_PREAMBLE; 1607 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1608 tmp |= RT2573_SHORT_PREAMBLE; 1609 1610 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1611 } 1612 1613 Static void 1614 rum_set_basicrates(struct rum_softc *sc) 1615 { 1616 struct ieee80211com *ic = &sc->sc_ic; 1617 1618 /* update basic rate set */ 1619 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1620 /* 11b basic rates: 1, 2Mbps */ 1621 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1622 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1623 /* 11a basic rates: 6, 12, 24Mbps */ 1624 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1625 } else { 1626 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1627 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1628 } 1629 } 1630 1631 /* 1632 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1633 * driver. 1634 */ 1635 Static void 1636 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1637 { 1638 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1639 uint32_t tmp; 1640 1641 /* update all BBP registers that depend on the band */ 1642 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1643 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1644 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1645 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1646 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1647 } 1648 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1649 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1650 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1651 } 1652 1653 sc->bbp17 = bbp17; 1654 rum_bbp_write(sc, 17, bbp17); 1655 rum_bbp_write(sc, 96, bbp96); 1656 rum_bbp_write(sc, 104, bbp104); 1657 1658 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1659 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1660 rum_bbp_write(sc, 75, 0x80); 1661 rum_bbp_write(sc, 86, 0x80); 1662 rum_bbp_write(sc, 88, 0x80); 1663 } 1664 1665 rum_bbp_write(sc, 35, bbp35); 1666 rum_bbp_write(sc, 97, bbp97); 1667 rum_bbp_write(sc, 98, bbp98); 1668 1669 tmp = rum_read(sc, RT2573_PHY_CSR0); 1670 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1671 if (IEEE80211_IS_CHAN_2GHZ(c)) 1672 tmp |= RT2573_PA_PE_2GHZ; 1673 else 1674 tmp |= RT2573_PA_PE_5GHZ; 1675 rum_write(sc, RT2573_PHY_CSR0, tmp); 1676 1677 /* 802.11a uses a 16 microseconds short interframe space */ 1678 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1679 } 1680 1681 Static void 1682 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1683 { 1684 struct ieee80211com *ic = &sc->sc_ic; 1685 const struct rfprog *rfprog; 1686 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1687 int8_t power; 1688 u_int i, chan; 1689 1690 chan = ieee80211_chan2ieee(ic, c); 1691 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1692 return; 1693 1694 /* select the appropriate RF settings based on what EEPROM says */ 1695 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1696 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1697 1698 /* find the settings for this channel (we know it exists) */ 1699 for (i = 0; rfprog[i].chan != chan; i++); 1700 1701 power = sc->txpow[i]; 1702 if (power < 0) { 1703 bbp94 += power; 1704 power = 0; 1705 } else if (power > 31) { 1706 bbp94 += power - 31; 1707 power = 31; 1708 } 1709 1710 /* 1711 * If we are switching from the 2GHz band to the 5GHz band or 1712 * vice-versa, BBP registers need to be reprogrammed. 1713 */ 1714 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1715 rum_select_band(sc, c); 1716 rum_select_antenna(sc); 1717 } 1718 ic->ic_curchan = c; 1719 1720 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1721 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1722 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1723 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1724 1725 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1726 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1727 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1728 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1729 1730 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1731 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1732 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1733 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1734 1735 DELAY(10); 1736 1737 /* enable smart mode for MIMO-capable RFs */ 1738 bbp3 = rum_bbp_read(sc, 3); 1739 1740 bbp3 &= ~RT2573_SMART_MODE; 1741 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1742 bbp3 |= RT2573_SMART_MODE; 1743 1744 rum_bbp_write(sc, 3, bbp3); 1745 1746 if (bbp94 != RT2573_BBPR94_DEFAULT) 1747 rum_bbp_write(sc, 94, bbp94); 1748 } 1749 1750 /* 1751 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1752 * and HostAP operating modes. 1753 */ 1754 Static void 1755 rum_enable_tsf_sync(struct rum_softc *sc) 1756 { 1757 struct ieee80211com *ic = &sc->sc_ic; 1758 uint32_t tmp; 1759 1760 if (ic->ic_opmode != IEEE80211_M_STA) { 1761 /* 1762 * Change default 16ms TBTT adjustment to 8ms. 1763 * Must be done before enabling beacon generation. 1764 */ 1765 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1766 } 1767 1768 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1769 1770 /* set beacon interval (in 1/16ms unit) */ 1771 tmp |= ic->ic_bss->ni_intval * 16; 1772 1773 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1774 if (ic->ic_opmode == IEEE80211_M_STA) 1775 tmp |= RT2573_TSF_MODE(1); 1776 else 1777 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1778 1779 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1780 } 1781 1782 Static void 1783 rum_update_slot(struct rum_softc *sc) 1784 { 1785 struct ieee80211com *ic = &sc->sc_ic; 1786 uint8_t slottime; 1787 uint32_t tmp; 1788 1789 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1790 1791 tmp = rum_read(sc, RT2573_MAC_CSR9); 1792 tmp = (tmp & ~0xff) | slottime; 1793 rum_write(sc, RT2573_MAC_CSR9, tmp); 1794 1795 DPRINTF(("setting slot time to %uus\n", slottime)); 1796 } 1797 1798 Static void 1799 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1800 { 1801 uint32_t tmp; 1802 1803 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1804 rum_write(sc, RT2573_MAC_CSR4, tmp); 1805 1806 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1807 rum_write(sc, RT2573_MAC_CSR5, tmp); 1808 } 1809 1810 Static void 1811 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1812 { 1813 uint32_t tmp; 1814 1815 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1816 rum_write(sc, RT2573_MAC_CSR2, tmp); 1817 1818 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1819 rum_write(sc, RT2573_MAC_CSR3, tmp); 1820 } 1821 1822 Static void 1823 rum_update_promisc(struct rum_softc *sc) 1824 { 1825 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1826 uint32_t tmp; 1827 1828 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1829 1830 tmp &= ~RT2573_DROP_NOT_TO_ME; 1831 if (!(ifp->if_flags & IFF_PROMISC)) 1832 tmp |= RT2573_DROP_NOT_TO_ME; 1833 1834 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1835 1836 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1837 "entering" : "leaving")); 1838 } 1839 1840 Static const char * 1841 rum_get_rf(int rev) 1842 { 1843 switch (rev) { 1844 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1845 case RT2573_RF_2528: return "RT2528"; 1846 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1847 case RT2573_RF_5226: return "RT5226"; 1848 default: return "unknown"; 1849 } 1850 } 1851 1852 Static void 1853 rum_read_eeprom(struct rum_softc *sc) 1854 { 1855 struct ieee80211com *ic = &sc->sc_ic; 1856 uint16_t val; 1857 #ifdef RUM_DEBUG 1858 int i; 1859 #endif 1860 1861 /* read MAC/BBP type */ 1862 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1863 sc->macbbp_rev = le16toh(val); 1864 1865 /* read MAC address */ 1866 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1867 1868 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1869 val = le16toh(val); 1870 sc->rf_rev = (val >> 11) & 0x1f; 1871 sc->hw_radio = (val >> 10) & 0x1; 1872 sc->rx_ant = (val >> 4) & 0x3; 1873 sc->tx_ant = (val >> 2) & 0x3; 1874 sc->nb_ant = val & 0x3; 1875 1876 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1877 1878 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1879 val = le16toh(val); 1880 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1881 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1882 1883 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1884 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1885 1886 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1887 val = le16toh(val); 1888 if ((val & 0xff) != 0xff) 1889 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1890 1891 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1892 val = le16toh(val); 1893 if ((val & 0xff) != 0xff) 1894 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1895 1896 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1897 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1898 1899 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1900 val = le16toh(val); 1901 if ((val & 0xff) != 0xff) 1902 sc->rffreq = val & 0xff; 1903 1904 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1905 1906 /* read Tx power for all a/b/g channels */ 1907 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1908 /* XXX default Tx power for 802.11a channels */ 1909 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1910 #ifdef RUM_DEBUG 1911 for (i = 0; i < 14; i++) 1912 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1913 #endif 1914 1915 /* read default values for BBP registers */ 1916 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1917 #ifdef RUM_DEBUG 1918 for (i = 0; i < 14; i++) { 1919 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1920 continue; 1921 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1922 sc->bbp_prom[i].val)); 1923 } 1924 #endif 1925 } 1926 1927 Static int 1928 rum_bbp_init(struct rum_softc *sc) 1929 { 1930 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1931 int i, ntries; 1932 uint8_t val; 1933 1934 /* wait for BBP to be ready */ 1935 for (ntries = 0; ntries < 100; ntries++) { 1936 val = rum_bbp_read(sc, 0); 1937 if (val != 0 && val != 0xff) 1938 break; 1939 DELAY(1000); 1940 } 1941 if (ntries == 100) { 1942 printf("%s: timeout waiting for BBP\n", 1943 USBDEVNAME(sc->sc_dev)); 1944 return EIO; 1945 } 1946 1947 /* initialize BBP registers to default values */ 1948 for (i = 0; i < N(rum_def_bbp); i++) 1949 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1950 1951 /* write vendor-specific BBP values (from EEPROM) */ 1952 for (i = 0; i < 16; i++) { 1953 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1954 continue; 1955 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1956 } 1957 1958 return 0; 1959 #undef N 1960 } 1961 1962 Static int 1963 rum_init(struct ifnet *ifp) 1964 { 1965 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1966 struct rum_softc *sc = ifp->if_softc; 1967 struct ieee80211com *ic = &sc->sc_ic; 1968 struct rum_rx_data *data; 1969 uint32_t tmp; 1970 usbd_status error = 0; 1971 int i, ntries; 1972 1973 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1974 if (rum_attachhook(sc)) 1975 goto fail; 1976 } 1977 1978 rum_stop(ifp, 0); 1979 1980 /* initialize MAC registers to default values */ 1981 for (i = 0; i < N(rum_def_mac); i++) 1982 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1983 1984 /* set host ready */ 1985 rum_write(sc, RT2573_MAC_CSR1, 3); 1986 rum_write(sc, RT2573_MAC_CSR1, 0); 1987 1988 /* wait for BBP/RF to wakeup */ 1989 for (ntries = 0; ntries < 1000; ntries++) { 1990 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1991 break; 1992 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1993 DELAY(1000); 1994 } 1995 if (ntries == 1000) { 1996 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1997 USBDEVNAME(sc->sc_dev)); 1998 goto fail; 1999 } 2000 2001 if ((error = rum_bbp_init(sc)) != 0) 2002 goto fail; 2003 2004 /* select default channel */ 2005 rum_select_band(sc, ic->ic_curchan); 2006 rum_select_antenna(sc); 2007 rum_set_chan(sc, ic->ic_curchan); 2008 2009 /* clear STA registers */ 2010 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2011 2012 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2013 rum_set_macaddr(sc, ic->ic_myaddr); 2014 2015 /* initialize ASIC */ 2016 rum_write(sc, RT2573_MAC_CSR1, 4); 2017 2018 /* 2019 * Allocate xfer for AMRR statistics requests. 2020 */ 2021 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 2022 if (sc->amrr_xfer == NULL) { 2023 printf("%s: could not allocate AMRR xfer\n", 2024 USBDEVNAME(sc->sc_dev)); 2025 goto fail; 2026 } 2027 2028 /* 2029 * Open Tx and Rx USB bulk pipes. 2030 */ 2031 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2032 &sc->sc_tx_pipeh); 2033 if (error != 0) { 2034 printf("%s: could not open Tx pipe: %s\n", 2035 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2036 goto fail; 2037 } 2038 2039 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2040 &sc->sc_rx_pipeh); 2041 if (error != 0) { 2042 printf("%s: could not open Rx pipe: %s\n", 2043 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2044 goto fail; 2045 } 2046 2047 /* 2048 * Allocate Tx and Rx xfer queues. 2049 */ 2050 error = rum_alloc_tx_list(sc); 2051 if (error != 0) { 2052 printf("%s: could not allocate Tx list\n", 2053 USBDEVNAME(sc->sc_dev)); 2054 goto fail; 2055 } 2056 2057 error = rum_alloc_rx_list(sc); 2058 if (error != 0) { 2059 printf("%s: could not allocate Rx list\n", 2060 USBDEVNAME(sc->sc_dev)); 2061 goto fail; 2062 } 2063 2064 /* 2065 * Start up the receive pipe. 2066 */ 2067 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2068 data = &sc->rx_data[i]; 2069 2070 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2071 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2072 error = usbd_transfer(data->xfer); 2073 if (error != USBD_NORMAL_COMPLETION && 2074 error != USBD_IN_PROGRESS) { 2075 printf("%s: could not queue Rx transfer\n", 2076 USBDEVNAME(sc->sc_dev)); 2077 goto fail; 2078 } 2079 } 2080 2081 /* update Rx filter */ 2082 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2083 2084 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2085 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2086 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2087 RT2573_DROP_ACKCTS; 2088 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2089 tmp |= RT2573_DROP_TODS; 2090 if (!(ifp->if_flags & IFF_PROMISC)) 2091 tmp |= RT2573_DROP_NOT_TO_ME; 2092 } 2093 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2094 2095 ifp->if_flags &= ~IFF_OACTIVE; 2096 ifp->if_flags |= IFF_RUNNING; 2097 2098 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2099 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2100 else 2101 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2102 2103 return 0; 2104 2105 fail: rum_stop(ifp, 1); 2106 return error; 2107 #undef N 2108 } 2109 2110 Static void 2111 rum_stop(struct ifnet *ifp, int disable) 2112 { 2113 struct rum_softc *sc = ifp->if_softc; 2114 struct ieee80211com *ic = &sc->sc_ic; 2115 uint32_t tmp; 2116 2117 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2118 2119 sc->sc_tx_timer = 0; 2120 ifp->if_timer = 0; 2121 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2122 2123 /* disable Rx */ 2124 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2125 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2126 2127 /* reset ASIC */ 2128 rum_write(sc, RT2573_MAC_CSR1, 3); 2129 rum_write(sc, RT2573_MAC_CSR1, 0); 2130 2131 if (sc->sc_rx_pipeh != NULL) { 2132 usbd_abort_pipe(sc->sc_rx_pipeh); 2133 usbd_close_pipe(sc->sc_rx_pipeh); 2134 sc->sc_rx_pipeh = NULL; 2135 } 2136 2137 if (sc->sc_tx_pipeh != NULL) { 2138 usbd_abort_pipe(sc->sc_tx_pipeh); 2139 usbd_close_pipe(sc->sc_tx_pipeh); 2140 sc->sc_tx_pipeh = NULL; 2141 } 2142 2143 rum_free_rx_list(sc); 2144 rum_free_tx_list(sc); 2145 } 2146 2147 Static int 2148 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2149 { 2150 usb_device_request_t req; 2151 uint16_t reg = RT2573_MCU_CODE_BASE; 2152 usbd_status error; 2153 2154 /* copy firmware image into NIC */ 2155 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2156 rum_write(sc, reg, UGETDW(ucode)); 2157 2158 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2159 req.bRequest = RT2573_MCU_CNTL; 2160 USETW(req.wValue, RT2573_MCU_RUN); 2161 USETW(req.wIndex, 0); 2162 USETW(req.wLength, 0); 2163 2164 error = usbd_do_request(sc->sc_udev, &req, NULL); 2165 if (error != 0) { 2166 printf("%s: could not run firmware: %s\n", 2167 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2168 } 2169 return error; 2170 } 2171 2172 Static int 2173 rum_prepare_beacon(struct rum_softc *sc) 2174 { 2175 struct ieee80211com *ic = &sc->sc_ic; 2176 struct rum_tx_desc desc; 2177 struct mbuf *m0; 2178 int rate; 2179 2180 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2181 if (m0 == NULL) { 2182 aprint_error_dev(sc->sc_dev, 2183 "could not allocate beacon frame\n"); 2184 return ENOBUFS; 2185 } 2186 2187 /* send beacons at the lowest available rate */ 2188 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2189 2190 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2191 m0->m_pkthdr.len, rate); 2192 2193 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2194 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2195 2196 /* copy beacon header and payload into NIC memory */ 2197 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2198 m0->m_pkthdr.len); 2199 2200 m_freem(m0); 2201 2202 return 0; 2203 } 2204 2205 Static void 2206 rum_newassoc(struct ieee80211_node *ni, int isnew) 2207 { 2208 /* start with lowest Tx rate */ 2209 ni->ni_txrate = 0; 2210 } 2211 2212 Static void 2213 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2214 { 2215 int i; 2216 2217 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2218 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2219 2220 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2221 2222 /* set rate to some reasonable initial value */ 2223 for (i = ni->ni_rates.rs_nrates - 1; 2224 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2225 i--); 2226 ni->ni_txrate = i; 2227 2228 usb_callout(sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2229 } 2230 2231 Static void 2232 rum_amrr_timeout(void *arg) 2233 { 2234 struct rum_softc *sc = arg; 2235 usb_device_request_t req; 2236 2237 /* 2238 * Asynchronously read statistic registers (cleared by read). 2239 */ 2240 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2241 req.bRequest = RT2573_READ_MULTI_MAC; 2242 USETW(req.wValue, 0); 2243 USETW(req.wIndex, RT2573_STA_CSR0); 2244 USETW(req.wLength, sizeof sc->sta); 2245 2246 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2247 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2248 rum_amrr_update); 2249 (void)usbd_transfer(sc->amrr_xfer); 2250 } 2251 2252 Static void 2253 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2254 usbd_status status) 2255 { 2256 struct rum_softc *sc = (struct rum_softc *)priv; 2257 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2258 2259 if (status != USBD_NORMAL_COMPLETION) { 2260 printf("%s: could not retrieve Tx statistics - cancelling " 2261 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2262 return; 2263 } 2264 2265 /* count TX retry-fail as Tx errors */ 2266 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2267 2268 sc->amn.amn_retrycnt = 2269 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2270 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2271 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2272 2273 sc->amn.amn_txcnt = 2274 sc->amn.amn_retrycnt + 2275 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2276 2277 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2278 2279 usb_callout(sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2280 } 2281 2282 int 2283 rum_activate(device_ptr_t self, enum devact act) 2284 { 2285 switch (act) { 2286 case DVACT_ACTIVATE: 2287 return EOPNOTSUPP; 2288 2289 case DVACT_DEACTIVATE: 2290 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2291 break; 2292 } 2293 2294 return 0; 2295 } 2296