if_rum.c revision 1.34
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.34 2011/02/13 05:51:24 dholland 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 1.34 2011/02/13 05:51:24 dholland Exp $"); 28 29 30 #include <sys/param.h> 31 #include <sys/sockio.h> 32 #include <sys/sysctl.h> 33 #include <sys/mbuf.h> 34 #include <sys/kernel.h> 35 #include <sys/socket.h> 36 #include <sys/systm.h> 37 #include <sys/malloc.h> 38 #include <sys/conf.h> 39 #include <sys/device.h> 40 41 #include <sys/bus.h> 42 #include <machine/endian.h> 43 #include <sys/intr.h> 44 45 #include <net/bpf.h> 46 #include <net/if.h> 47 #include <net/if_arp.h> 48 #include <net/if_dl.h> 49 #include <net/if_ether.h> 50 #include <net/if_media.h> 51 #include <net/if_types.h> 52 53 #include <netinet/in.h> 54 #include <netinet/in_systm.h> 55 #include <netinet/in_var.h> 56 #include <netinet/ip.h> 57 58 #include <net80211/ieee80211_netbsd.h> 59 #include <net80211/ieee80211_var.h> 60 #include <net80211/ieee80211_amrr.h> 61 #include <net80211/ieee80211_radiotap.h> 62 63 #include <dev/firmload.h> 64 65 #include <dev/usb/usb.h> 66 #include <dev/usb/usbdi.h> 67 #include <dev/usb/usbdi_util.h> 68 #include <dev/usb/usbdevs.h> 69 70 #include <dev/usb/if_rumreg.h> 71 #include <dev/usb/if_rumvar.h> 72 73 #ifdef USB_DEBUG 74 #define RUM_DEBUG 75 #endif 76 77 #ifdef RUM_DEBUG 78 #define DPRINTF(x) do { if (rum_debug) printf x; } while (0) 79 #define DPRINTFN(n, x) do { if (rum_debug >= (n)) printf x; } while (0) 80 int rum_debug = 1; 81 #else 82 #define DPRINTF(x) 83 #define DPRINTFN(n, x) 84 #endif 85 86 /* various supported device vendors/products */ 87 static const struct usb_devno rum_devs[] = { 88 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_HWU54DM }, 89 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_2 }, 90 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_3 }, 91 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_4 }, 92 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_WUG2700 }, 93 { USB_VENDOR_AMIT, USB_PRODUCT_AMIT_CGWLUSB2GO }, 94 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_2 }, 95 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_3 }, 96 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 97 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 98 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 99 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GR }, 100 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 101 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GL }, 102 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GPX }, 103 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 104 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 105 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 106 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 107 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA111 }, 108 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 109 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWI05GS }, 110 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 111 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 112 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254LB }, 113 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254V2AP }, 114 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 115 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_G54HP }, 116 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, 117 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_WLIUCG }, 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_QCOM, USB_PRODUCT_QCOM_RT2573_3 }, 129 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 130 { USB_VENDOR_RALINK_2, USB_PRODUCT_RALINK_2_RT2573 }, 131 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 132 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 133 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 134 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 135 }; 136 137 Static int rum_attachhook(void *); 138 Static int rum_alloc_tx_list(struct rum_softc *); 139 Static void rum_free_tx_list(struct rum_softc *); 140 Static int rum_alloc_rx_list(struct rum_softc *); 141 Static void rum_free_rx_list(struct rum_softc *); 142 Static int rum_media_change(struct ifnet *); 143 Static void rum_next_scan(void *); 144 Static void rum_task(void *); 145 Static int rum_newstate(struct ieee80211com *, 146 enum ieee80211_state, int); 147 Static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 148 usbd_status); 149 Static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 150 usbd_status); 151 Static uint8_t rum_rxrate(const struct rum_rx_desc *); 152 Static int rum_ack_rate(struct ieee80211com *, int); 153 Static uint16_t rum_txtime(int, int, uint32_t); 154 Static uint8_t rum_plcp_signal(int); 155 Static void rum_setup_tx_desc(struct rum_softc *, 156 struct rum_tx_desc *, uint32_t, uint16_t, int, 157 int); 158 Static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 159 struct ieee80211_node *); 160 Static int rum_tx_data(struct rum_softc *, struct mbuf *, 161 struct ieee80211_node *); 162 Static void rum_start(struct ifnet *); 163 Static void rum_watchdog(struct ifnet *); 164 Static int rum_ioctl(struct ifnet *, u_long, void *); 165 Static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 166 int); 167 Static uint32_t rum_read(struct rum_softc *, uint16_t); 168 Static void rum_read_multi(struct rum_softc *, uint16_t, void *, 169 int); 170 Static void rum_write(struct rum_softc *, uint16_t, uint32_t); 171 Static void rum_write_multi(struct rum_softc *, uint16_t, void *, 172 size_t); 173 Static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 174 Static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 175 Static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 176 Static void rum_select_antenna(struct rum_softc *); 177 Static void rum_enable_mrr(struct rum_softc *); 178 Static void rum_set_txpreamble(struct rum_softc *); 179 Static void rum_set_basicrates(struct rum_softc *); 180 Static void rum_select_band(struct rum_softc *, 181 struct ieee80211_channel *); 182 Static void rum_set_chan(struct rum_softc *, 183 struct ieee80211_channel *); 184 Static void rum_enable_tsf_sync(struct rum_softc *); 185 Static void rum_update_slot(struct rum_softc *); 186 Static void rum_set_bssid(struct rum_softc *, const uint8_t *); 187 Static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 188 Static void rum_update_promisc(struct rum_softc *); 189 Static const char *rum_get_rf(int); 190 Static void rum_read_eeprom(struct rum_softc *); 191 Static int rum_bbp_init(struct rum_softc *); 192 Static int rum_init(struct ifnet *); 193 Static void rum_stop(struct ifnet *, int); 194 Static int rum_load_microcode(struct rum_softc *, const u_char *, 195 size_t); 196 Static int rum_prepare_beacon(struct rum_softc *); 197 Static void rum_newassoc(struct ieee80211_node *, int); 198 Static void rum_amrr_start(struct rum_softc *, 199 struct ieee80211_node *); 200 Static void rum_amrr_timeout(void *); 201 Static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 202 usbd_status status); 203 204 /* 205 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 206 */ 207 static const struct ieee80211_rateset rum_rateset_11a = 208 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 209 210 static const struct ieee80211_rateset rum_rateset_11b = 211 { 4, { 2, 4, 11, 22 } }; 212 213 static const struct ieee80211_rateset rum_rateset_11g = 214 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 215 216 static const struct { 217 uint32_t reg; 218 uint32_t val; 219 } rum_def_mac[] = { 220 RT2573_DEF_MAC 221 }; 222 223 static const struct { 224 uint8_t reg; 225 uint8_t val; 226 } rum_def_bbp[] = { 227 RT2573_DEF_BBP 228 }; 229 230 static const struct rfprog { 231 uint8_t chan; 232 uint32_t r1, r2, r3, r4; 233 } rum_rf5226[] = { 234 RT2573_RF5226 235 }, rum_rf5225[] = { 236 RT2573_RF5225 237 }; 238 239 int rum_match(device_t, cfdata_t, void *); 240 void rum_attach(device_t, device_t, void *); 241 int rum_detach(device_t, int); 242 int rum_activate(device_t, enum devact); 243 extern struct cfdriver rum_cd; 244 CFATTACH_DECL_NEW(rum, sizeof(struct rum_softc), rum_match, rum_attach, 245 rum_detach, rum_activate); 246 247 int 248 rum_match(device_t parent, cfdata_t match, void *aux) 249 { 250 struct usb_attach_arg *uaa = aux; 251 252 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 253 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 254 } 255 256 Static int 257 rum_attachhook(void *xsc) 258 { 259 struct rum_softc *sc = xsc; 260 firmware_handle_t fwh; 261 const char *name = "rum-rt2573"; 262 u_char *ucode; 263 size_t size; 264 int error; 265 266 if ((error = firmware_open("rum", name, &fwh)) != 0) { 267 printf("%s: failed loadfirmware of file %s (error %d)\n", 268 device_xname(sc->sc_dev), name, error); 269 return error; 270 } 271 size = firmware_get_size(fwh); 272 ucode = firmware_malloc(size); 273 if (ucode == NULL) { 274 printf("%s: failed to allocate firmware memory\n", 275 device_xname(sc->sc_dev)); 276 firmware_close(fwh); 277 return ENOMEM; 278 } 279 error = firmware_read(fwh, 0, ucode, size); 280 firmware_close(fwh); 281 if (error != 0) { 282 printf("%s: failed to read firmware (error %d)\n", 283 device_xname(sc->sc_dev), error); 284 firmware_free(ucode, 0); 285 return error; 286 } 287 288 if (rum_load_microcode(sc, ucode, size) != 0) { 289 printf("%s: could not load 8051 microcode\n", 290 device_xname(sc->sc_dev)); 291 firmware_free(ucode, 0); 292 return ENXIO; 293 } 294 295 firmware_free(ucode, 0); 296 sc->sc_flags |= RT2573_FWLOADED; 297 298 return 0; 299 } 300 301 void 302 rum_attach(device_t parent, device_t self, void *aux) 303 { 304 struct rum_softc *sc = device_private(self); 305 struct usb_attach_arg *uaa = aux; 306 struct ieee80211com *ic = &sc->sc_ic; 307 struct ifnet *ifp = &sc->sc_if; 308 usb_interface_descriptor_t *id; 309 usb_endpoint_descriptor_t *ed; 310 usbd_status error; 311 char *devinfop; 312 int i, ntries; 313 uint32_t tmp; 314 315 sc->sc_dev = self; 316 sc->sc_udev = uaa->device; 317 sc->sc_flags = 0; 318 319 aprint_naive("\n"); 320 aprint_normal("\n"); 321 322 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 323 aprint_normal_dev(self, "%s\n", devinfop); 324 usbd_devinfo_free(devinfop); 325 326 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 327 aprint_error_dev(self, "could not set configuration no\n"); 328 return; 329 } 330 331 /* get the first interface handle */ 332 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 333 &sc->sc_iface); 334 if (error != 0) { 335 aprint_error_dev(self, "could not get interface handle\n"); 336 return; 337 } 338 339 /* 340 * Find endpoints. 341 */ 342 id = usbd_get_interface_descriptor(sc->sc_iface); 343 344 sc->sc_rx_no = sc->sc_tx_no = -1; 345 for (i = 0; i < id->bNumEndpoints; i++) { 346 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 347 if (ed == NULL) { 348 aprint_error_dev(self, 349 "no endpoint descriptor for iface %d\n", i); 350 return; 351 } 352 353 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 354 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 355 sc->sc_rx_no = ed->bEndpointAddress; 356 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 357 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 358 sc->sc_tx_no = ed->bEndpointAddress; 359 } 360 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 361 aprint_error_dev(self, "missing endpoint\n"); 362 return; 363 } 364 365 usb_init_task(&sc->sc_task, rum_task, sc); 366 callout_init(&sc->sc_scan_ch, 0); 367 368 sc->amrr.amrr_min_success_threshold = 1; 369 sc->amrr.amrr_max_success_threshold = 10; 370 callout_init(&sc->sc_amrr_ch, 0); 371 372 /* retrieve RT2573 rev. no */ 373 for (ntries = 0; ntries < 1000; ntries++) { 374 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 375 break; 376 DELAY(1000); 377 } 378 if (ntries == 1000) { 379 aprint_error_dev(self, "timeout waiting for chip to settle\n"); 380 return; 381 } 382 383 /* retrieve MAC address and various other things from EEPROM */ 384 rum_read_eeprom(sc); 385 386 aprint_normal_dev(self, 387 "MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 388 sc->macbbp_rev, tmp, 389 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 390 391 ic->ic_ifp = ifp; 392 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 393 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 394 ic->ic_state = IEEE80211_S_INIT; 395 396 /* set device capabilities */ 397 ic->ic_caps = 398 IEEE80211_C_IBSS | /* IBSS mode supported */ 399 IEEE80211_C_MONITOR | /* monitor mode supported */ 400 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 401 IEEE80211_C_TXPMGT | /* tx power management */ 402 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 403 IEEE80211_C_SHSLOT | /* short slot time supported */ 404 IEEE80211_C_WPA; /* 802.11i */ 405 406 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 407 /* set supported .11a rates */ 408 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 409 410 /* set supported .11a channels */ 411 for (i = 34; i <= 46; i += 4) { 412 ic->ic_channels[i].ic_freq = 413 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 414 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 415 } 416 for (i = 36; i <= 64; i += 4) { 417 ic->ic_channels[i].ic_freq = 418 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 419 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 420 } 421 for (i = 100; i <= 140; i += 4) { 422 ic->ic_channels[i].ic_freq = 423 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 424 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 425 } 426 for (i = 149; i <= 165; i += 4) { 427 ic->ic_channels[i].ic_freq = 428 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 429 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 430 } 431 } 432 433 /* set supported .11b and .11g rates */ 434 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 435 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 436 437 /* set supported .11b and .11g channels (1 through 14) */ 438 for (i = 1; i <= 14; i++) { 439 ic->ic_channels[i].ic_freq = 440 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 441 ic->ic_channels[i].ic_flags = 442 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 443 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 444 } 445 446 ifp->if_softc = sc; 447 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 448 ifp->if_init = rum_init; 449 ifp->if_ioctl = rum_ioctl; 450 ifp->if_start = rum_start; 451 ifp->if_watchdog = rum_watchdog; 452 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 453 IFQ_SET_READY(&ifp->if_snd); 454 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 455 456 if_attach(ifp); 457 ieee80211_ifattach(ic); 458 ic->ic_newassoc = rum_newassoc; 459 460 /* override state transition machine */ 461 sc->sc_newstate = ic->ic_newstate; 462 ic->ic_newstate = rum_newstate; 463 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 464 465 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 466 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 467 &sc->sc_drvbpf); 468 469 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 470 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 471 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 472 473 sc->sc_txtap_len = sizeof sc->sc_txtapu; 474 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 475 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 476 477 ieee80211_announce(ic); 478 479 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 480 sc->sc_dev); 481 482 return; 483 } 484 485 int 486 rum_detach(device_t self, int flags) 487 { 488 struct rum_softc *sc = device_private(self); 489 struct ieee80211com *ic = &sc->sc_ic; 490 struct ifnet *ifp = &sc->sc_if; 491 int s; 492 493 if (!ifp->if_softc) 494 return 0; 495 496 s = splusb(); 497 498 rum_stop(ifp, 1); 499 usb_rem_task(sc->sc_udev, &sc->sc_task); 500 callout_stop(&sc->sc_scan_ch); 501 callout_stop(&sc->sc_amrr_ch); 502 503 if (sc->amrr_xfer != NULL) { 504 usbd_free_xfer(sc->amrr_xfer); 505 sc->amrr_xfer = NULL; 506 } 507 508 if (sc->sc_rx_pipeh != NULL) { 509 usbd_abort_pipe(sc->sc_rx_pipeh); 510 usbd_close_pipe(sc->sc_rx_pipeh); 511 } 512 513 if (sc->sc_tx_pipeh != NULL) { 514 usbd_abort_pipe(sc->sc_tx_pipeh); 515 usbd_close_pipe(sc->sc_tx_pipeh); 516 } 517 518 bpf_detach(ifp); 519 ieee80211_ifdetach(ic); /* free all nodes */ 520 if_detach(ifp); 521 522 splx(s); 523 524 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 525 526 return 0; 527 } 528 529 Static int 530 rum_alloc_tx_list(struct rum_softc *sc) 531 { 532 struct rum_tx_data *data; 533 int i, error; 534 535 sc->tx_queued = 0; 536 537 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 538 data = &sc->tx_data[i]; 539 540 data->sc = sc; 541 542 data->xfer = usbd_alloc_xfer(sc->sc_udev); 543 if (data->xfer == NULL) { 544 printf("%s: could not allocate tx xfer\n", 545 device_xname(sc->sc_dev)); 546 error = ENOMEM; 547 goto fail; 548 } 549 550 data->buf = usbd_alloc_buffer(data->xfer, 551 RT2573_TX_DESC_SIZE + MCLBYTES); 552 if (data->buf == NULL) { 553 printf("%s: could not allocate tx buffer\n", 554 device_xname(sc->sc_dev)); 555 error = ENOMEM; 556 goto fail; 557 } 558 559 /* clean Tx descriptor */ 560 memset(data->buf, 0, RT2573_TX_DESC_SIZE); 561 } 562 563 return 0; 564 565 fail: rum_free_tx_list(sc); 566 return error; 567 } 568 569 Static void 570 rum_free_tx_list(struct rum_softc *sc) 571 { 572 struct rum_tx_data *data; 573 int i; 574 575 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 576 data = &sc->tx_data[i]; 577 578 if (data->xfer != NULL) { 579 usbd_free_xfer(data->xfer); 580 data->xfer = NULL; 581 } 582 583 if (data->ni != NULL) { 584 ieee80211_free_node(data->ni); 585 data->ni = NULL; 586 } 587 } 588 } 589 590 Static int 591 rum_alloc_rx_list(struct rum_softc *sc) 592 { 593 struct rum_rx_data *data; 594 int i, error; 595 596 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 597 data = &sc->rx_data[i]; 598 599 data->sc = sc; 600 601 data->xfer = usbd_alloc_xfer(sc->sc_udev); 602 if (data->xfer == NULL) { 603 printf("%s: could not allocate rx xfer\n", 604 device_xname(sc->sc_dev)); 605 error = ENOMEM; 606 goto fail; 607 } 608 609 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 610 printf("%s: could not allocate rx buffer\n", 611 device_xname(sc->sc_dev)); 612 error = ENOMEM; 613 goto fail; 614 } 615 616 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 617 if (data->m == NULL) { 618 printf("%s: could not allocate rx mbuf\n", 619 device_xname(sc->sc_dev)); 620 error = ENOMEM; 621 goto fail; 622 } 623 624 MCLGET(data->m, M_DONTWAIT); 625 if (!(data->m->m_flags & M_EXT)) { 626 printf("%s: could not allocate rx mbuf cluster\n", 627 device_xname(sc->sc_dev)); 628 error = ENOMEM; 629 goto fail; 630 } 631 632 data->buf = mtod(data->m, uint8_t *); 633 } 634 635 return 0; 636 637 fail: rum_free_rx_list(sc); 638 return error; 639 } 640 641 Static void 642 rum_free_rx_list(struct rum_softc *sc) 643 { 644 struct rum_rx_data *data; 645 int i; 646 647 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 648 data = &sc->rx_data[i]; 649 650 if (data->xfer != NULL) { 651 usbd_free_xfer(data->xfer); 652 data->xfer = NULL; 653 } 654 655 if (data->m != NULL) { 656 m_freem(data->m); 657 data->m = NULL; 658 } 659 } 660 } 661 662 Static int 663 rum_media_change(struct ifnet *ifp) 664 { 665 int error; 666 667 error = ieee80211_media_change(ifp); 668 if (error != ENETRESET) 669 return error; 670 671 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 672 rum_init(ifp); 673 674 return 0; 675 } 676 677 /* 678 * This function is called periodically (every 200ms) during scanning to 679 * switch from one channel to another. 680 */ 681 Static void 682 rum_next_scan(void *arg) 683 { 684 struct rum_softc *sc = arg; 685 struct ieee80211com *ic = &sc->sc_ic; 686 687 if (ic->ic_state == IEEE80211_S_SCAN) 688 ieee80211_next_scan(ic); 689 } 690 691 Static void 692 rum_task(void *arg) 693 { 694 struct rum_softc *sc = arg; 695 struct ieee80211com *ic = &sc->sc_ic; 696 enum ieee80211_state ostate; 697 struct ieee80211_node *ni; 698 uint32_t tmp; 699 700 ostate = ic->ic_state; 701 702 switch (sc->sc_state) { 703 case IEEE80211_S_INIT: 704 if (ostate == IEEE80211_S_RUN) { 705 /* abort TSF synchronization */ 706 tmp = rum_read(sc, RT2573_TXRX_CSR9); 707 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 708 } 709 break; 710 711 case IEEE80211_S_SCAN: 712 rum_set_chan(sc, ic->ic_curchan); 713 callout_reset(&sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 714 break; 715 716 case IEEE80211_S_AUTH: 717 rum_set_chan(sc, ic->ic_curchan); 718 break; 719 720 case IEEE80211_S_ASSOC: 721 rum_set_chan(sc, ic->ic_curchan); 722 break; 723 724 case IEEE80211_S_RUN: 725 rum_set_chan(sc, ic->ic_curchan); 726 727 ni = ic->ic_bss; 728 729 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 730 rum_update_slot(sc); 731 rum_enable_mrr(sc); 732 rum_set_txpreamble(sc); 733 rum_set_basicrates(sc); 734 rum_set_bssid(sc, ni->ni_bssid); 735 } 736 737 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 738 ic->ic_opmode == IEEE80211_M_IBSS) 739 rum_prepare_beacon(sc); 740 741 if (ic->ic_opmode != IEEE80211_M_MONITOR) 742 rum_enable_tsf_sync(sc); 743 744 if (ic->ic_opmode == IEEE80211_M_STA) { 745 /* fake a join to init the tx rate */ 746 rum_newassoc(ic->ic_bss, 1); 747 748 /* enable automatic rate adaptation in STA mode */ 749 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 750 rum_amrr_start(sc, ni); 751 } 752 753 break; 754 } 755 756 sc->sc_newstate(ic, sc->sc_state, -1); 757 } 758 759 Static int 760 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 761 { 762 struct rum_softc *sc = ic->ic_ifp->if_softc; 763 764 usb_rem_task(sc->sc_udev, &sc->sc_task); 765 callout_stop(&sc->sc_scan_ch); 766 callout_stop(&sc->sc_amrr_ch); 767 768 /* do it in a process context */ 769 sc->sc_state = nstate; 770 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 771 772 return 0; 773 } 774 775 /* quickly determine if a given rate is CCK or OFDM */ 776 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 777 778 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 779 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 780 781 Static void 782 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 783 { 784 struct rum_tx_data *data = priv; 785 struct rum_softc *sc = data->sc; 786 struct ifnet *ifp = &sc->sc_if; 787 int s; 788 789 if (status != USBD_NORMAL_COMPLETION) { 790 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 791 return; 792 793 printf("%s: could not transmit buffer: %s\n", 794 device_xname(sc->sc_dev), usbd_errstr(status)); 795 796 if (status == USBD_STALLED) 797 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 798 799 ifp->if_oerrors++; 800 return; 801 } 802 803 s = splnet(); 804 805 ieee80211_free_node(data->ni); 806 data->ni = NULL; 807 808 sc->tx_queued--; 809 ifp->if_opackets++; 810 811 DPRINTFN(10, ("tx done\n")); 812 813 sc->sc_tx_timer = 0; 814 ifp->if_flags &= ~IFF_OACTIVE; 815 rum_start(ifp); 816 817 splx(s); 818 } 819 820 Static void 821 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 822 { 823 struct rum_rx_data *data = priv; 824 struct rum_softc *sc = data->sc; 825 struct ieee80211com *ic = &sc->sc_ic; 826 struct ifnet *ifp = &sc->sc_if; 827 struct rum_rx_desc *desc; 828 struct ieee80211_frame *wh; 829 struct ieee80211_node *ni; 830 struct mbuf *mnew, *m; 831 int s, len; 832 833 if (status != USBD_NORMAL_COMPLETION) { 834 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 835 return; 836 837 if (status == USBD_STALLED) 838 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 839 goto skip; 840 } 841 842 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 843 844 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 845 DPRINTF(("%s: xfer too short %d\n", device_xname(sc->sc_dev), 846 len)); 847 ifp->if_ierrors++; 848 goto skip; 849 } 850 851 desc = (struct rum_rx_desc *)data->buf; 852 853 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 854 /* 855 * This should not happen since we did not request to receive 856 * those frames when we filled RT2573_TXRX_CSR0. 857 */ 858 DPRINTFN(5, ("CRC error\n")); 859 ifp->if_ierrors++; 860 goto skip; 861 } 862 863 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 864 if (mnew == NULL) { 865 printf("%s: could not allocate rx mbuf\n", 866 device_xname(sc->sc_dev)); 867 ifp->if_ierrors++; 868 goto skip; 869 } 870 871 MCLGET(mnew, M_DONTWAIT); 872 if (!(mnew->m_flags & M_EXT)) { 873 printf("%s: could not allocate rx mbuf cluster\n", 874 device_xname(sc->sc_dev)); 875 m_freem(mnew); 876 ifp->if_ierrors++; 877 goto skip; 878 } 879 880 m = data->m; 881 data->m = mnew; 882 data->buf = mtod(data->m, uint8_t *); 883 884 /* finalize mbuf */ 885 m->m_pkthdr.rcvif = ifp; 886 m->m_data = (void *)(desc + 1); 887 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 888 889 s = splnet(); 890 891 if (sc->sc_drvbpf != NULL) { 892 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 893 894 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 895 tap->wr_rate = rum_rxrate(desc); 896 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 897 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 898 tap->wr_antenna = sc->rx_ant; 899 tap->wr_antsignal = desc->rssi; 900 901 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 902 } 903 904 wh = mtod(m, struct ieee80211_frame *); 905 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 906 907 /* send the frame to the 802.11 layer */ 908 ieee80211_input(ic, m, ni, desc->rssi, 0); 909 910 /* node is no longer needed */ 911 ieee80211_free_node(ni); 912 913 splx(s); 914 915 DPRINTFN(15, ("rx done\n")); 916 917 skip: /* setup a new transfer */ 918 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 919 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 920 usbd_transfer(xfer); 921 } 922 923 /* 924 * This function is only used by the Rx radiotap code. It returns the rate at 925 * which a given frame was received. 926 */ 927 Static uint8_t 928 rum_rxrate(const struct rum_rx_desc *desc) 929 { 930 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 931 /* reverse function of rum_plcp_signal */ 932 switch (desc->rate) { 933 case 0xb: return 12; 934 case 0xf: return 18; 935 case 0xa: return 24; 936 case 0xe: return 36; 937 case 0x9: return 48; 938 case 0xd: return 72; 939 case 0x8: return 96; 940 case 0xc: return 108; 941 } 942 } else { 943 if (desc->rate == 10) 944 return 2; 945 if (desc->rate == 20) 946 return 4; 947 if (desc->rate == 55) 948 return 11; 949 if (desc->rate == 110) 950 return 22; 951 } 952 return 2; /* should not get there */ 953 } 954 955 /* 956 * Return the expected ack rate for a frame transmitted at rate `rate'. 957 * XXX: this should depend on the destination node basic rate set. 958 */ 959 Static int 960 rum_ack_rate(struct ieee80211com *ic, int rate) 961 { 962 switch (rate) { 963 /* CCK rates */ 964 case 2: 965 return 2; 966 case 4: 967 case 11: 968 case 22: 969 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 970 971 /* OFDM rates */ 972 case 12: 973 case 18: 974 return 12; 975 case 24: 976 case 36: 977 return 24; 978 case 48: 979 case 72: 980 case 96: 981 case 108: 982 return 48; 983 } 984 985 /* default to 1Mbps */ 986 return 2; 987 } 988 989 /* 990 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 991 * The function automatically determines the operating mode depending on the 992 * given rate. `flags' indicates whether short preamble is in use or not. 993 */ 994 Static uint16_t 995 rum_txtime(int len, int rate, uint32_t flags) 996 { 997 uint16_t txtime; 998 999 if (RUM_RATE_IS_OFDM(rate)) { 1000 /* IEEE Std 802.11a-1999, pp. 37 */ 1001 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 1002 txtime = 16 + 4 + 4 * txtime + 6; 1003 } else { 1004 /* IEEE Std 802.11b-1999, pp. 28 */ 1005 txtime = (16 * len + rate - 1) / rate; 1006 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1007 txtime += 72 + 24; 1008 else 1009 txtime += 144 + 48; 1010 } 1011 return txtime; 1012 } 1013 1014 Static uint8_t 1015 rum_plcp_signal(int rate) 1016 { 1017 switch (rate) { 1018 /* CCK rates (returned values are device-dependent) */ 1019 case 2: return 0x0; 1020 case 4: return 0x1; 1021 case 11: return 0x2; 1022 case 22: return 0x3; 1023 1024 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1025 case 12: return 0xb; 1026 case 18: return 0xf; 1027 case 24: return 0xa; 1028 case 36: return 0xe; 1029 case 48: return 0x9; 1030 case 72: return 0xd; 1031 case 96: return 0x8; 1032 case 108: return 0xc; 1033 1034 /* unsupported rates (should not get there) */ 1035 default: return 0xff; 1036 } 1037 } 1038 1039 Static void 1040 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1041 uint32_t flags, uint16_t xflags, int len, int rate) 1042 { 1043 struct ieee80211com *ic = &sc->sc_ic; 1044 uint16_t plcp_length; 1045 int remainder; 1046 1047 desc->flags = htole32(flags); 1048 desc->flags |= htole32(RT2573_TX_VALID); 1049 desc->flags |= htole32(len << 16); 1050 1051 desc->xflags = htole16(xflags); 1052 1053 desc->wme = htole16( 1054 RT2573_QID(0) | 1055 RT2573_AIFSN(2) | 1056 RT2573_LOGCWMIN(4) | 1057 RT2573_LOGCWMAX(10)); 1058 1059 /* setup PLCP fields */ 1060 desc->plcp_signal = rum_plcp_signal(rate); 1061 desc->plcp_service = 4; 1062 1063 len += IEEE80211_CRC_LEN; 1064 if (RUM_RATE_IS_OFDM(rate)) { 1065 desc->flags |= htole32(RT2573_TX_OFDM); 1066 1067 plcp_length = len & 0xfff; 1068 desc->plcp_length_hi = plcp_length >> 6; 1069 desc->plcp_length_lo = plcp_length & 0x3f; 1070 } else { 1071 plcp_length = (16 * len + rate - 1) / rate; 1072 if (rate == 22) { 1073 remainder = (16 * len) % 22; 1074 if (remainder != 0 && remainder < 7) 1075 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1076 } 1077 desc->plcp_length_hi = plcp_length >> 8; 1078 desc->plcp_length_lo = plcp_length & 0xff; 1079 1080 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1081 desc->plcp_signal |= 0x08; 1082 } 1083 } 1084 1085 #define RUM_TX_TIMEOUT 5000 1086 1087 Static int 1088 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1089 { 1090 struct ieee80211com *ic = &sc->sc_ic; 1091 struct rum_tx_desc *desc; 1092 struct rum_tx_data *data; 1093 struct ieee80211_frame *wh; 1094 struct ieee80211_key *k; 1095 uint32_t flags = 0; 1096 uint16_t dur; 1097 usbd_status error; 1098 int xferlen, rate; 1099 1100 data = &sc->tx_data[0]; 1101 desc = (struct rum_tx_desc *)data->buf; 1102 1103 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 1104 1105 data->m = m0; 1106 data->ni = ni; 1107 1108 wh = mtod(m0, struct ieee80211_frame *); 1109 1110 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1111 k = ieee80211_crypto_encap(ic, ni, m0); 1112 if (k == NULL) { 1113 m_freem(m0); 1114 return ENOBUFS; 1115 } 1116 } 1117 1118 wh = mtod(m0, struct ieee80211_frame *); 1119 1120 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1121 flags |= RT2573_TX_NEED_ACK; 1122 1123 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1124 ic->ic_flags) + sc->sifs; 1125 *(uint16_t *)wh->i_dur = htole16(dur); 1126 1127 /* tell hardware to set timestamp in probe responses */ 1128 if ((wh->i_fc[0] & 1129 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1130 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1131 flags |= RT2573_TX_TIMESTAMP; 1132 } 1133 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 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 (sc->sc_drvbpf != NULL) { 1225 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1226 1227 tap->wt_flags = 0; 1228 tap->wt_rate = rate; 1229 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1230 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1231 tap->wt_antenna = sc->tx_ant; 1232 1233 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1234 } 1235 1236 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1237 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1238 1239 /* align end on a 4-bytes boundary */ 1240 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1241 1242 /* 1243 * No space left in the last URB to store the extra 4 bytes, force 1244 * sending of another URB. 1245 */ 1246 if ((xferlen % 64) == 0) 1247 xferlen += 4; 1248 1249 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1250 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1251 rate, xferlen)); 1252 1253 /* mbuf is no longer needed */ 1254 m_freem(m0); 1255 1256 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1257 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1258 1259 error = usbd_transfer(data->xfer); 1260 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1261 return error; 1262 1263 sc->tx_queued++; 1264 1265 return 0; 1266 } 1267 1268 Static void 1269 rum_start(struct ifnet *ifp) 1270 { 1271 struct rum_softc *sc = ifp->if_softc; 1272 struct ieee80211com *ic = &sc->sc_ic; 1273 struct ether_header *eh; 1274 struct ieee80211_node *ni; 1275 struct mbuf *m0; 1276 1277 for (;;) { 1278 IF_POLL(&ic->ic_mgtq, m0); 1279 if (m0 != NULL) { 1280 if (sc->tx_queued >= RUM_TX_LIST_COUNT) { 1281 ifp->if_flags |= IFF_OACTIVE; 1282 break; 1283 } 1284 IF_DEQUEUE(&ic->ic_mgtq, m0); 1285 1286 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1287 m0->m_pkthdr.rcvif = NULL; 1288 bpf_mtap3(ic->ic_rawbpf, m0); 1289 if (rum_tx_mgt(sc, m0, ni) != 0) 1290 break; 1291 1292 } else { 1293 if (ic->ic_state != IEEE80211_S_RUN) 1294 break; 1295 IFQ_POLL(&ifp->if_snd, m0); 1296 if (m0 == NULL) 1297 break; 1298 if (sc->tx_queued >= RUM_TX_LIST_COUNT) { 1299 ifp->if_flags |= IFF_OACTIVE; 1300 break; 1301 } 1302 IFQ_DEQUEUE(&ifp->if_snd, m0); 1303 if (m0->m_len < sizeof(struct ether_header) && 1304 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1305 continue; 1306 1307 eh = mtod(m0, struct ether_header *); 1308 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1309 if (ni == NULL) { 1310 m_freem(m0); 1311 continue; 1312 } 1313 bpf_mtap(ifp, m0); 1314 m0 = ieee80211_encap(ic, m0, ni); 1315 if (m0 == NULL) { 1316 ieee80211_free_node(ni); 1317 continue; 1318 } 1319 bpf_mtap3(ic->ic_rawbpf, m0); 1320 if (rum_tx_data(sc, m0, ni) != 0) { 1321 ieee80211_free_node(ni); 1322 ifp->if_oerrors++; 1323 break; 1324 } 1325 } 1326 1327 sc->sc_tx_timer = 5; 1328 ifp->if_timer = 1; 1329 } 1330 } 1331 1332 Static void 1333 rum_watchdog(struct ifnet *ifp) 1334 { 1335 struct rum_softc *sc = ifp->if_softc; 1336 struct ieee80211com *ic = &sc->sc_ic; 1337 1338 ifp->if_timer = 0; 1339 1340 if (sc->sc_tx_timer > 0) { 1341 if (--sc->sc_tx_timer == 0) { 1342 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1343 /*rum_init(ifp); XXX needs a process context! */ 1344 ifp->if_oerrors++; 1345 return; 1346 } 1347 ifp->if_timer = 1; 1348 } 1349 1350 ieee80211_watchdog(ic); 1351 } 1352 1353 Static int 1354 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1355 { 1356 struct rum_softc *sc = ifp->if_softc; 1357 struct ieee80211com *ic = &sc->sc_ic; 1358 int s, error = 0; 1359 1360 s = splnet(); 1361 1362 switch (cmd) { 1363 case SIOCSIFFLAGS: 1364 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1365 break; 1366 /* XXX re-use ether_ioctl() */ 1367 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1368 case IFF_UP|IFF_RUNNING: 1369 rum_update_promisc(sc); 1370 break; 1371 case IFF_UP: 1372 rum_init(ifp); 1373 break; 1374 case IFF_RUNNING: 1375 rum_stop(ifp, 1); 1376 break; 1377 case 0: 1378 break; 1379 } 1380 break; 1381 1382 default: 1383 error = ieee80211_ioctl(ic, cmd, data); 1384 } 1385 1386 if (error == ENETRESET) { 1387 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1388 (IFF_UP | IFF_RUNNING)) 1389 rum_init(ifp); 1390 error = 0; 1391 } 1392 1393 splx(s); 1394 1395 return error; 1396 } 1397 1398 Static void 1399 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1400 { 1401 usb_device_request_t req; 1402 usbd_status error; 1403 1404 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1405 req.bRequest = RT2573_READ_EEPROM; 1406 USETW(req.wValue, 0); 1407 USETW(req.wIndex, addr); 1408 USETW(req.wLength, len); 1409 1410 error = usbd_do_request(sc->sc_udev, &req, buf); 1411 if (error != 0) { 1412 printf("%s: could not read EEPROM: %s\n", 1413 device_xname(sc->sc_dev), usbd_errstr(error)); 1414 } 1415 } 1416 1417 Static uint32_t 1418 rum_read(struct rum_softc *sc, uint16_t reg) 1419 { 1420 uint32_t val; 1421 1422 rum_read_multi(sc, reg, &val, sizeof val); 1423 1424 return le32toh(val); 1425 } 1426 1427 Static void 1428 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1429 { 1430 usb_device_request_t req; 1431 usbd_status error; 1432 1433 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1434 req.bRequest = RT2573_READ_MULTI_MAC; 1435 USETW(req.wValue, 0); 1436 USETW(req.wIndex, reg); 1437 USETW(req.wLength, len); 1438 1439 error = usbd_do_request(sc->sc_udev, &req, buf); 1440 if (error != 0) { 1441 printf("%s: could not multi read MAC register: %s\n", 1442 device_xname(sc->sc_dev), usbd_errstr(error)); 1443 } 1444 } 1445 1446 Static void 1447 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1448 { 1449 uint32_t tmp = htole32(val); 1450 1451 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1452 } 1453 1454 Static void 1455 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1456 { 1457 usb_device_request_t req; 1458 usbd_status error; 1459 1460 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1461 req.bRequest = RT2573_WRITE_MULTI_MAC; 1462 USETW(req.wValue, 0); 1463 USETW(req.wIndex, reg); 1464 USETW(req.wLength, len); 1465 1466 error = usbd_do_request(sc->sc_udev, &req, buf); 1467 if (error != 0) { 1468 printf("%s: could not multi write MAC register: %s\n", 1469 device_xname(sc->sc_dev), usbd_errstr(error)); 1470 } 1471 } 1472 1473 Static void 1474 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1475 { 1476 uint32_t tmp; 1477 int ntries; 1478 1479 for (ntries = 0; ntries < 5; ntries++) { 1480 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1481 break; 1482 } 1483 if (ntries == 5) { 1484 printf("%s: could not write to BBP\n", device_xname(sc->sc_dev)); 1485 return; 1486 } 1487 1488 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1489 rum_write(sc, RT2573_PHY_CSR3, tmp); 1490 } 1491 1492 Static uint8_t 1493 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1494 { 1495 uint32_t val; 1496 int ntries; 1497 1498 for (ntries = 0; ntries < 5; ntries++) { 1499 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1500 break; 1501 } 1502 if (ntries == 5) { 1503 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1504 return 0; 1505 } 1506 1507 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1508 rum_write(sc, RT2573_PHY_CSR3, val); 1509 1510 for (ntries = 0; ntries < 100; ntries++) { 1511 val = rum_read(sc, RT2573_PHY_CSR3); 1512 if (!(val & RT2573_BBP_BUSY)) 1513 return val & 0xff; 1514 DELAY(1); 1515 } 1516 1517 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1518 return 0; 1519 } 1520 1521 Static void 1522 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1523 { 1524 uint32_t tmp; 1525 int ntries; 1526 1527 for (ntries = 0; ntries < 5; ntries++) { 1528 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1529 break; 1530 } 1531 if (ntries == 5) { 1532 printf("%s: could not write to RF\n", device_xname(sc->sc_dev)); 1533 return; 1534 } 1535 1536 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1537 (reg & 3); 1538 rum_write(sc, RT2573_PHY_CSR4, tmp); 1539 1540 /* remember last written value in sc */ 1541 sc->rf_regs[reg] = val; 1542 1543 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1544 } 1545 1546 Static void 1547 rum_select_antenna(struct rum_softc *sc) 1548 { 1549 uint8_t bbp4, bbp77; 1550 uint32_t tmp; 1551 1552 bbp4 = rum_bbp_read(sc, 4); 1553 bbp77 = rum_bbp_read(sc, 77); 1554 1555 /* TBD */ 1556 1557 /* make sure Rx is disabled before switching antenna */ 1558 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1559 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1560 1561 rum_bbp_write(sc, 4, bbp4); 1562 rum_bbp_write(sc, 77, bbp77); 1563 1564 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1565 } 1566 1567 /* 1568 * Enable multi-rate retries for frames sent at OFDM rates. 1569 * In 802.11b/g mode, allow fallback to CCK rates. 1570 */ 1571 Static void 1572 rum_enable_mrr(struct rum_softc *sc) 1573 { 1574 struct ieee80211com *ic = &sc->sc_ic; 1575 uint32_t tmp; 1576 1577 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1578 1579 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1580 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1581 tmp |= RT2573_MRR_CCK_FALLBACK; 1582 tmp |= RT2573_MRR_ENABLED; 1583 1584 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1585 } 1586 1587 Static void 1588 rum_set_txpreamble(struct rum_softc *sc) 1589 { 1590 uint32_t tmp; 1591 1592 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1593 1594 tmp &= ~RT2573_SHORT_PREAMBLE; 1595 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1596 tmp |= RT2573_SHORT_PREAMBLE; 1597 1598 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1599 } 1600 1601 Static void 1602 rum_set_basicrates(struct rum_softc *sc) 1603 { 1604 struct ieee80211com *ic = &sc->sc_ic; 1605 1606 /* update basic rate set */ 1607 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1608 /* 11b basic rates: 1, 2Mbps */ 1609 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1610 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1611 /* 11a basic rates: 6, 12, 24Mbps */ 1612 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1613 } else { 1614 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1615 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1616 } 1617 } 1618 1619 /* 1620 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1621 * driver. 1622 */ 1623 Static void 1624 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1625 { 1626 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1627 uint32_t tmp; 1628 1629 /* update all BBP registers that depend on the band */ 1630 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1631 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1632 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1633 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1634 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1635 } 1636 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1637 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1638 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1639 } 1640 1641 sc->bbp17 = bbp17; 1642 rum_bbp_write(sc, 17, bbp17); 1643 rum_bbp_write(sc, 96, bbp96); 1644 rum_bbp_write(sc, 104, bbp104); 1645 1646 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1647 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1648 rum_bbp_write(sc, 75, 0x80); 1649 rum_bbp_write(sc, 86, 0x80); 1650 rum_bbp_write(sc, 88, 0x80); 1651 } 1652 1653 rum_bbp_write(sc, 35, bbp35); 1654 rum_bbp_write(sc, 97, bbp97); 1655 rum_bbp_write(sc, 98, bbp98); 1656 1657 tmp = rum_read(sc, RT2573_PHY_CSR0); 1658 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1659 if (IEEE80211_IS_CHAN_2GHZ(c)) 1660 tmp |= RT2573_PA_PE_2GHZ; 1661 else 1662 tmp |= RT2573_PA_PE_5GHZ; 1663 rum_write(sc, RT2573_PHY_CSR0, tmp); 1664 1665 /* 802.11a uses a 16 microseconds short interframe space */ 1666 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1667 } 1668 1669 Static void 1670 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1671 { 1672 struct ieee80211com *ic = &sc->sc_ic; 1673 const struct rfprog *rfprog; 1674 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1675 int8_t power; 1676 u_int i, chan; 1677 1678 chan = ieee80211_chan2ieee(ic, c); 1679 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1680 return; 1681 1682 /* select the appropriate RF settings based on what EEPROM says */ 1683 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1684 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1685 1686 /* find the settings for this channel (we know it exists) */ 1687 for (i = 0; rfprog[i].chan != chan; i++); 1688 1689 power = sc->txpow[i]; 1690 if (power < 0) { 1691 bbp94 += power; 1692 power = 0; 1693 } else if (power > 31) { 1694 bbp94 += power - 31; 1695 power = 31; 1696 } 1697 1698 /* 1699 * If we are switching from the 2GHz band to the 5GHz band or 1700 * vice-versa, BBP registers need to be reprogrammed. 1701 */ 1702 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1703 rum_select_band(sc, c); 1704 rum_select_antenna(sc); 1705 } 1706 ic->ic_curchan = c; 1707 1708 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1709 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1710 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1711 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1712 1713 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1714 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1715 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1716 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1717 1718 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1719 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1720 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1721 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1722 1723 DELAY(10); 1724 1725 /* enable smart mode for MIMO-capable RFs */ 1726 bbp3 = rum_bbp_read(sc, 3); 1727 1728 bbp3 &= ~RT2573_SMART_MODE; 1729 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1730 bbp3 |= RT2573_SMART_MODE; 1731 1732 rum_bbp_write(sc, 3, bbp3); 1733 1734 if (bbp94 != RT2573_BBPR94_DEFAULT) 1735 rum_bbp_write(sc, 94, bbp94); 1736 } 1737 1738 /* 1739 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1740 * and HostAP operating modes. 1741 */ 1742 Static void 1743 rum_enable_tsf_sync(struct rum_softc *sc) 1744 { 1745 struct ieee80211com *ic = &sc->sc_ic; 1746 uint32_t tmp; 1747 1748 if (ic->ic_opmode != IEEE80211_M_STA) { 1749 /* 1750 * Change default 16ms TBTT adjustment to 8ms. 1751 * Must be done before enabling beacon generation. 1752 */ 1753 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1754 } 1755 1756 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1757 1758 /* set beacon interval (in 1/16ms unit) */ 1759 tmp |= ic->ic_bss->ni_intval * 16; 1760 1761 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1762 if (ic->ic_opmode == IEEE80211_M_STA) 1763 tmp |= RT2573_TSF_MODE(1); 1764 else 1765 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1766 1767 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1768 } 1769 1770 Static void 1771 rum_update_slot(struct rum_softc *sc) 1772 { 1773 struct ieee80211com *ic = &sc->sc_ic; 1774 uint8_t slottime; 1775 uint32_t tmp; 1776 1777 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1778 1779 tmp = rum_read(sc, RT2573_MAC_CSR9); 1780 tmp = (tmp & ~0xff) | slottime; 1781 rum_write(sc, RT2573_MAC_CSR9, tmp); 1782 1783 DPRINTF(("setting slot time to %uus\n", slottime)); 1784 } 1785 1786 Static void 1787 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1788 { 1789 uint32_t tmp; 1790 1791 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1792 rum_write(sc, RT2573_MAC_CSR4, tmp); 1793 1794 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1795 rum_write(sc, RT2573_MAC_CSR5, tmp); 1796 } 1797 1798 Static void 1799 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1800 { 1801 uint32_t tmp; 1802 1803 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1804 rum_write(sc, RT2573_MAC_CSR2, tmp); 1805 1806 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1807 rum_write(sc, RT2573_MAC_CSR3, tmp); 1808 } 1809 1810 Static void 1811 rum_update_promisc(struct rum_softc *sc) 1812 { 1813 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1814 uint32_t tmp; 1815 1816 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1817 1818 tmp &= ~RT2573_DROP_NOT_TO_ME; 1819 if (!(ifp->if_flags & IFF_PROMISC)) 1820 tmp |= RT2573_DROP_NOT_TO_ME; 1821 1822 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1823 1824 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1825 "entering" : "leaving")); 1826 } 1827 1828 Static const char * 1829 rum_get_rf(int rev) 1830 { 1831 switch (rev) { 1832 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1833 case RT2573_RF_2528: return "RT2528"; 1834 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1835 case RT2573_RF_5226: return "RT5226"; 1836 default: return "unknown"; 1837 } 1838 } 1839 1840 Static void 1841 rum_read_eeprom(struct rum_softc *sc) 1842 { 1843 struct ieee80211com *ic = &sc->sc_ic; 1844 uint16_t val; 1845 #ifdef RUM_DEBUG 1846 int i; 1847 #endif 1848 1849 /* read MAC/BBP type */ 1850 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1851 sc->macbbp_rev = le16toh(val); 1852 1853 /* read MAC address */ 1854 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1855 1856 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1857 val = le16toh(val); 1858 sc->rf_rev = (val >> 11) & 0x1f; 1859 sc->hw_radio = (val >> 10) & 0x1; 1860 sc->rx_ant = (val >> 4) & 0x3; 1861 sc->tx_ant = (val >> 2) & 0x3; 1862 sc->nb_ant = val & 0x3; 1863 1864 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1865 1866 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1867 val = le16toh(val); 1868 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1869 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1870 1871 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1872 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1873 1874 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1875 val = le16toh(val); 1876 if ((val & 0xff) != 0xff) 1877 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1878 1879 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1880 val = le16toh(val); 1881 if ((val & 0xff) != 0xff) 1882 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1883 1884 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1885 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1886 1887 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1888 val = le16toh(val); 1889 if ((val & 0xff) != 0xff) 1890 sc->rffreq = val & 0xff; 1891 1892 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1893 1894 /* read Tx power for all a/b/g channels */ 1895 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1896 /* XXX default Tx power for 802.11a channels */ 1897 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1898 #ifdef RUM_DEBUG 1899 for (i = 0; i < 14; i++) 1900 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1901 #endif 1902 1903 /* read default values for BBP registers */ 1904 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1905 #ifdef RUM_DEBUG 1906 for (i = 0; i < 14; i++) { 1907 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1908 continue; 1909 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1910 sc->bbp_prom[i].val)); 1911 } 1912 #endif 1913 } 1914 1915 Static int 1916 rum_bbp_init(struct rum_softc *sc) 1917 { 1918 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1919 int i, ntries; 1920 uint8_t val; 1921 1922 /* wait for BBP to be ready */ 1923 for (ntries = 0; ntries < 100; ntries++) { 1924 val = rum_bbp_read(sc, 0); 1925 if (val != 0 && val != 0xff) 1926 break; 1927 DELAY(1000); 1928 } 1929 if (ntries == 100) { 1930 printf("%s: timeout waiting for BBP\n", 1931 device_xname(sc->sc_dev)); 1932 return EIO; 1933 } 1934 1935 /* initialize BBP registers to default values */ 1936 for (i = 0; i < N(rum_def_bbp); i++) 1937 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1938 1939 /* write vendor-specific BBP values (from EEPROM) */ 1940 for (i = 0; i < 16; i++) { 1941 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1942 continue; 1943 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1944 } 1945 1946 return 0; 1947 #undef N 1948 } 1949 1950 Static int 1951 rum_init(struct ifnet *ifp) 1952 { 1953 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1954 struct rum_softc *sc = ifp->if_softc; 1955 struct ieee80211com *ic = &sc->sc_ic; 1956 struct rum_rx_data *data; 1957 uint32_t tmp; 1958 usbd_status error = 0; 1959 int i, ntries; 1960 1961 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1962 if (rum_attachhook(sc)) 1963 goto fail; 1964 } 1965 1966 rum_stop(ifp, 0); 1967 1968 /* initialize MAC registers to default values */ 1969 for (i = 0; i < N(rum_def_mac); i++) 1970 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1971 1972 /* set host ready */ 1973 rum_write(sc, RT2573_MAC_CSR1, 3); 1974 rum_write(sc, RT2573_MAC_CSR1, 0); 1975 1976 /* wait for BBP/RF to wakeup */ 1977 for (ntries = 0; ntries < 1000; ntries++) { 1978 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1979 break; 1980 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1981 DELAY(1000); 1982 } 1983 if (ntries == 1000) { 1984 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1985 device_xname(sc->sc_dev)); 1986 goto fail; 1987 } 1988 1989 if ((error = rum_bbp_init(sc)) != 0) 1990 goto fail; 1991 1992 /* select default channel */ 1993 rum_select_band(sc, ic->ic_curchan); 1994 rum_select_antenna(sc); 1995 rum_set_chan(sc, ic->ic_curchan); 1996 1997 /* clear STA registers */ 1998 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 1999 2000 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2001 rum_set_macaddr(sc, ic->ic_myaddr); 2002 2003 /* initialize ASIC */ 2004 rum_write(sc, RT2573_MAC_CSR1, 4); 2005 2006 /* 2007 * Allocate xfer for AMRR statistics requests. 2008 */ 2009 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 2010 if (sc->amrr_xfer == NULL) { 2011 printf("%s: could not allocate AMRR xfer\n", 2012 device_xname(sc->sc_dev)); 2013 goto fail; 2014 } 2015 2016 /* 2017 * Open Tx and Rx USB bulk pipes. 2018 */ 2019 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2020 &sc->sc_tx_pipeh); 2021 if (error != 0) { 2022 printf("%s: could not open Tx pipe: %s\n", 2023 device_xname(sc->sc_dev), usbd_errstr(error)); 2024 goto fail; 2025 } 2026 2027 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2028 &sc->sc_rx_pipeh); 2029 if (error != 0) { 2030 printf("%s: could not open Rx pipe: %s\n", 2031 device_xname(sc->sc_dev), usbd_errstr(error)); 2032 goto fail; 2033 } 2034 2035 /* 2036 * Allocate Tx and Rx xfer queues. 2037 */ 2038 error = rum_alloc_tx_list(sc); 2039 if (error != 0) { 2040 printf("%s: could not allocate Tx list\n", 2041 device_xname(sc->sc_dev)); 2042 goto fail; 2043 } 2044 2045 error = rum_alloc_rx_list(sc); 2046 if (error != 0) { 2047 printf("%s: could not allocate Rx list\n", 2048 device_xname(sc->sc_dev)); 2049 goto fail; 2050 } 2051 2052 /* 2053 * Start up the receive pipe. 2054 */ 2055 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2056 data = &sc->rx_data[i]; 2057 2058 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2059 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2060 error = usbd_transfer(data->xfer); 2061 if (error != USBD_NORMAL_COMPLETION && 2062 error != USBD_IN_PROGRESS) { 2063 printf("%s: could not queue Rx transfer\n", 2064 device_xname(sc->sc_dev)); 2065 goto fail; 2066 } 2067 } 2068 2069 /* update Rx filter */ 2070 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2071 2072 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2073 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2074 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2075 RT2573_DROP_ACKCTS; 2076 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2077 tmp |= RT2573_DROP_TODS; 2078 if (!(ifp->if_flags & IFF_PROMISC)) 2079 tmp |= RT2573_DROP_NOT_TO_ME; 2080 } 2081 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2082 2083 ifp->if_flags &= ~IFF_OACTIVE; 2084 ifp->if_flags |= IFF_RUNNING; 2085 2086 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2087 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2088 else 2089 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2090 2091 return 0; 2092 2093 fail: rum_stop(ifp, 1); 2094 return error; 2095 #undef N 2096 } 2097 2098 Static void 2099 rum_stop(struct ifnet *ifp, int disable) 2100 { 2101 struct rum_softc *sc = ifp->if_softc; 2102 struct ieee80211com *ic = &sc->sc_ic; 2103 uint32_t tmp; 2104 2105 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2106 2107 sc->sc_tx_timer = 0; 2108 ifp->if_timer = 0; 2109 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2110 2111 /* disable Rx */ 2112 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2113 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2114 2115 /* reset ASIC */ 2116 rum_write(sc, RT2573_MAC_CSR1, 3); 2117 rum_write(sc, RT2573_MAC_CSR1, 0); 2118 2119 if (sc->sc_rx_pipeh != NULL) { 2120 usbd_abort_pipe(sc->sc_rx_pipeh); 2121 usbd_close_pipe(sc->sc_rx_pipeh); 2122 sc->sc_rx_pipeh = NULL; 2123 } 2124 2125 if (sc->sc_tx_pipeh != NULL) { 2126 usbd_abort_pipe(sc->sc_tx_pipeh); 2127 usbd_close_pipe(sc->sc_tx_pipeh); 2128 sc->sc_tx_pipeh = NULL; 2129 } 2130 2131 rum_free_rx_list(sc); 2132 rum_free_tx_list(sc); 2133 } 2134 2135 Static int 2136 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2137 { 2138 usb_device_request_t req; 2139 uint16_t reg = RT2573_MCU_CODE_BASE; 2140 usbd_status error; 2141 2142 /* copy firmware image into NIC */ 2143 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2144 rum_write(sc, reg, UGETDW(ucode)); 2145 2146 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2147 req.bRequest = RT2573_MCU_CNTL; 2148 USETW(req.wValue, RT2573_MCU_RUN); 2149 USETW(req.wIndex, 0); 2150 USETW(req.wLength, 0); 2151 2152 error = usbd_do_request(sc->sc_udev, &req, NULL); 2153 if (error != 0) { 2154 printf("%s: could not run firmware: %s\n", 2155 device_xname(sc->sc_dev), usbd_errstr(error)); 2156 } 2157 return error; 2158 } 2159 2160 Static int 2161 rum_prepare_beacon(struct rum_softc *sc) 2162 { 2163 struct ieee80211com *ic = &sc->sc_ic; 2164 struct rum_tx_desc desc; 2165 struct mbuf *m0; 2166 int rate; 2167 2168 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2169 if (m0 == NULL) { 2170 aprint_error_dev(sc->sc_dev, 2171 "could not allocate beacon frame\n"); 2172 return ENOBUFS; 2173 } 2174 2175 /* send beacons at the lowest available rate */ 2176 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2177 2178 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2179 m0->m_pkthdr.len, rate); 2180 2181 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2182 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2183 2184 /* copy beacon header and payload into NIC memory */ 2185 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2186 m0->m_pkthdr.len); 2187 2188 m_freem(m0); 2189 2190 return 0; 2191 } 2192 2193 Static void 2194 rum_newassoc(struct ieee80211_node *ni, int isnew) 2195 { 2196 /* start with lowest Tx rate */ 2197 ni->ni_txrate = 0; 2198 } 2199 2200 Static void 2201 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2202 { 2203 int i; 2204 2205 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2206 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2207 2208 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2209 2210 /* set rate to some reasonable initial value */ 2211 for (i = ni->ni_rates.rs_nrates - 1; 2212 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2213 i--); 2214 ni->ni_txrate = i; 2215 2216 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2217 } 2218 2219 Static void 2220 rum_amrr_timeout(void *arg) 2221 { 2222 struct rum_softc *sc = arg; 2223 usb_device_request_t req; 2224 2225 /* 2226 * Asynchronously read statistic registers (cleared by read). 2227 */ 2228 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2229 req.bRequest = RT2573_READ_MULTI_MAC; 2230 USETW(req.wValue, 0); 2231 USETW(req.wIndex, RT2573_STA_CSR0); 2232 USETW(req.wLength, sizeof sc->sta); 2233 2234 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2235 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2236 rum_amrr_update); 2237 (void)usbd_transfer(sc->amrr_xfer); 2238 } 2239 2240 Static void 2241 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2242 usbd_status status) 2243 { 2244 struct rum_softc *sc = (struct rum_softc *)priv; 2245 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2246 2247 if (status != USBD_NORMAL_COMPLETION) { 2248 printf("%s: could not retrieve Tx statistics - cancelling " 2249 "automatic rate control\n", device_xname(sc->sc_dev)); 2250 return; 2251 } 2252 2253 /* count TX retry-fail as Tx errors */ 2254 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2255 2256 sc->amn.amn_retrycnt = 2257 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2258 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2259 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2260 2261 sc->amn.amn_txcnt = 2262 sc->amn.amn_retrycnt + 2263 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2264 2265 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2266 2267 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2268 } 2269 2270 int 2271 rum_activate(device_t self, enum devact act) 2272 { 2273 switch (act) { 2274 case DVACT_DEACTIVATE: 2275 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2276 return 0; 2277 default: 2278 return EOPNOTSUPP; 2279 } 2280 } 2281
Indexes created Wed Sep 24 05:09:52 GMT 2025