1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.40 2011/09/08 22:06:54 christos 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 1.40 2011/09/08 22:06:54 christos 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/module.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 #include <net/bpf.h> 47 #include <net/if.h> 48 #include <net/if_arp.h> 49 #include <net/if_dl.h> 50 #include <net/if_ether.h> 51 #include <net/if_media.h> 52 #include <net/if_types.h> 53 54 #include <netinet/in.h> 55 #include <netinet/in_systm.h> 56 #include <netinet/in_var.h> 57 #include <netinet/ip.h> 58 59 #include <net80211/ieee80211_netbsd.h> 60 #include <net80211/ieee80211_var.h> 61 #include <net80211/ieee80211_amrr.h> 62 #include <net80211/ieee80211_radiotap.h> 63 64 #include <dev/firmload.h> 65 66 #include <dev/usb/usb.h> 67 #include <dev/usb/usbdi.h> 68 #include <dev/usb/usbdi_util.h> 69 #include <dev/usb/usbdevs.h> 70 71 #include <dev/usb/if_rumreg.h> 72 #include <dev/usb/if_rumvar.h> 73 74 #ifdef USB_DEBUG 75 #define RUM_DEBUG 76 #endif 77 78 #ifdef RUM_DEBUG 79 #define DPRINTF(x) do { if (rum_debug) printf x; } while (0) 80 #define DPRINTFN(n, x) do { if (rum_debug >= (n)) printf x; } while (0) 81 int rum_debug = 1; 82 #else 83 #define DPRINTF(x) 84 #define DPRINTFN(n, x) 85 #endif 86 87 /* various supported device vendors/products */ 88 static const struct usb_devno rum_devs[] = { 89 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_HWU54DM }, 90 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_2 }, 91 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_3 }, 92 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_4 }, 93 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_WUG2700 }, 94 { USB_VENDOR_AMIT, USB_PRODUCT_AMIT_CGWLUSB2GO }, 95 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_2 }, 96 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_3 }, 97 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 98 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 99 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 100 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GR }, 101 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 102 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GL }, 103 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GPX }, 104 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 105 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 106 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 107 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 108 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA110 }, 109 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA111 }, 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_MELCO, USB_PRODUCT_MELCO_WLIUCG }, 120 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 121 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 122 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 123 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_4 }, 124 { USB_VENDOR_NOVATECH, USB_PRODUCT_NOVATECH_RT2573 }, 125 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54HP }, 126 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 127 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 128 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 129 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 130 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_3 }, 131 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 132 { USB_VENDOR_RALINK_2, USB_PRODUCT_RALINK_2_RT2573 }, 133 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 134 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 135 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 136 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 137 }; 138 139 static int rum_attachhook(void *); 140 static int rum_alloc_tx_list(struct rum_softc *); 141 static void rum_free_tx_list(struct rum_softc *); 142 static int rum_alloc_rx_list(struct rum_softc *); 143 static void rum_free_rx_list(struct rum_softc *); 144 static int rum_media_change(struct ifnet *); 145 static void rum_next_scan(void *); 146 static void rum_task(void *); 147 static int rum_newstate(struct ieee80211com *, 148 enum ieee80211_state, int); 149 static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 150 usbd_status); 151 static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 152 usbd_status); 153 static uint8_t rum_rxrate(const struct rum_rx_desc *); 154 static int rum_ack_rate(struct ieee80211com *, int); 155 static uint16_t rum_txtime(int, int, uint32_t); 156 static uint8_t rum_plcp_signal(int); 157 static void rum_setup_tx_desc(struct rum_softc *, 158 struct rum_tx_desc *, uint32_t, uint16_t, int, 159 int); 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 static int rum_match(device_t, cfdata_t, void *); 240 static void rum_attach(device_t, device_t, void *); 241 static int rum_detach(device_t, int); 242 static 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 static 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 static 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 static 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_cur = 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 + IEEE80211_MAX_LEN); 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 int s; 687 688 s = splnet(); 689 if (ic->ic_state == IEEE80211_S_SCAN) 690 ieee80211_next_scan(ic); 691 splx(s); 692 } 693 694 static void 695 rum_task(void *arg) 696 { 697 struct rum_softc *sc = arg; 698 struct ieee80211com *ic = &sc->sc_ic; 699 enum ieee80211_state ostate; 700 struct ieee80211_node *ni; 701 uint32_t tmp; 702 703 ostate = ic->ic_state; 704 705 switch (sc->sc_state) { 706 case IEEE80211_S_INIT: 707 if (ostate == IEEE80211_S_RUN) { 708 /* abort TSF synchronization */ 709 tmp = rum_read(sc, RT2573_TXRX_CSR9); 710 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 711 } 712 break; 713 714 case IEEE80211_S_SCAN: 715 rum_set_chan(sc, ic->ic_curchan); 716 callout_reset(&sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 717 break; 718 719 case IEEE80211_S_AUTH: 720 rum_set_chan(sc, ic->ic_curchan); 721 break; 722 723 case IEEE80211_S_ASSOC: 724 rum_set_chan(sc, ic->ic_curchan); 725 break; 726 727 case IEEE80211_S_RUN: 728 rum_set_chan(sc, ic->ic_curchan); 729 730 ni = ic->ic_bss; 731 732 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 733 rum_update_slot(sc); 734 rum_enable_mrr(sc); 735 rum_set_txpreamble(sc); 736 rum_set_basicrates(sc); 737 rum_set_bssid(sc, ni->ni_bssid); 738 } 739 740 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 741 ic->ic_opmode == IEEE80211_M_IBSS) 742 rum_prepare_beacon(sc); 743 744 if (ic->ic_opmode != IEEE80211_M_MONITOR) 745 rum_enable_tsf_sync(sc); 746 747 if (ic->ic_opmode == IEEE80211_M_STA) { 748 /* fake a join to init the tx rate */ 749 rum_newassoc(ic->ic_bss, 1); 750 751 /* enable automatic rate adaptation in STA mode */ 752 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 753 rum_amrr_start(sc, ni); 754 } 755 756 break; 757 } 758 759 sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); 760 } 761 762 static int 763 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 764 { 765 struct rum_softc *sc = ic->ic_ifp->if_softc; 766 767 usb_rem_task(sc->sc_udev, &sc->sc_task); 768 callout_stop(&sc->sc_scan_ch); 769 callout_stop(&sc->sc_amrr_ch); 770 771 /* do it in a process context */ 772 sc->sc_state = nstate; 773 sc->sc_arg = arg; 774 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 775 776 return 0; 777 } 778 779 /* quickly determine if a given rate is CCK or OFDM */ 780 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 781 782 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 783 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 784 785 static void 786 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 787 { 788 struct rum_tx_data *data = priv; 789 struct rum_softc *sc = data->sc; 790 struct ifnet *ifp = &sc->sc_if; 791 int s; 792 793 if (status != USBD_NORMAL_COMPLETION) { 794 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 795 return; 796 797 printf("%s: could not transmit buffer: %s\n", 798 device_xname(sc->sc_dev), usbd_errstr(status)); 799 800 if (status == USBD_STALLED) 801 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 802 803 ifp->if_oerrors++; 804 return; 805 } 806 807 s = splnet(); 808 809 ieee80211_free_node(data->ni); 810 data->ni = NULL; 811 812 sc->tx_queued--; 813 ifp->if_opackets++; 814 815 DPRINTFN(10, ("tx done\n")); 816 817 sc->sc_tx_timer = 0; 818 ifp->if_flags &= ~IFF_OACTIVE; 819 rum_start(ifp); 820 821 splx(s); 822 } 823 824 static void 825 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 826 { 827 struct rum_rx_data *data = priv; 828 struct rum_softc *sc = data->sc; 829 struct ieee80211com *ic = &sc->sc_ic; 830 struct ifnet *ifp = &sc->sc_if; 831 struct rum_rx_desc *desc; 832 struct ieee80211_frame *wh; 833 struct ieee80211_node *ni; 834 struct mbuf *mnew, *m; 835 int s, len; 836 837 if (status != USBD_NORMAL_COMPLETION) { 838 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 839 return; 840 841 if (status == USBD_STALLED) 842 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 843 goto skip; 844 } 845 846 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 847 848 if (len < (int)(RT2573_RX_DESC_SIZE + 849 sizeof(struct ieee80211_frame_min))) { 850 DPRINTF(("%s: xfer too short %d\n", device_xname(sc->sc_dev), 851 len)); 852 ifp->if_ierrors++; 853 goto skip; 854 } 855 856 desc = (struct rum_rx_desc *)data->buf; 857 858 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 859 /* 860 * This should not happen since we did not request to receive 861 * those frames when we filled RT2573_TXRX_CSR0. 862 */ 863 DPRINTFN(5, ("CRC error\n")); 864 ifp->if_ierrors++; 865 goto skip; 866 } 867 868 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 869 if (mnew == NULL) { 870 printf("%s: could not allocate rx mbuf\n", 871 device_xname(sc->sc_dev)); 872 ifp->if_ierrors++; 873 goto skip; 874 } 875 876 MCLGET(mnew, M_DONTWAIT); 877 if (!(mnew->m_flags & M_EXT)) { 878 printf("%s: could not allocate rx mbuf cluster\n", 879 device_xname(sc->sc_dev)); 880 m_freem(mnew); 881 ifp->if_ierrors++; 882 goto skip; 883 } 884 885 m = data->m; 886 data->m = mnew; 887 data->buf = mtod(data->m, uint8_t *); 888 889 /* finalize mbuf */ 890 m->m_pkthdr.rcvif = ifp; 891 m->m_data = (void *)(desc + 1); 892 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 893 894 s = splnet(); 895 896 if (sc->sc_drvbpf != NULL) { 897 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 898 899 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 900 tap->wr_rate = rum_rxrate(desc); 901 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 902 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 903 tap->wr_antenna = sc->rx_ant; 904 tap->wr_antsignal = desc->rssi; 905 906 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 907 } 908 909 wh = mtod(m, struct ieee80211_frame *); 910 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 911 912 /* send the frame to the 802.11 layer */ 913 ieee80211_input(ic, m, ni, desc->rssi, 0); 914 915 /* node is no longer needed */ 916 ieee80211_free_node(ni); 917 918 splx(s); 919 920 DPRINTFN(15, ("rx done\n")); 921 922 skip: /* setup a new transfer */ 923 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 924 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 925 usbd_transfer(xfer); 926 } 927 928 /* 929 * This function is only used by the Rx radiotap code. It returns the rate at 930 * which a given frame was received. 931 */ 932 static uint8_t 933 rum_rxrate(const struct rum_rx_desc *desc) 934 { 935 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 936 /* reverse function of rum_plcp_signal */ 937 switch (desc->rate) { 938 case 0xb: return 12; 939 case 0xf: return 18; 940 case 0xa: return 24; 941 case 0xe: return 36; 942 case 0x9: return 48; 943 case 0xd: return 72; 944 case 0x8: return 96; 945 case 0xc: return 108; 946 } 947 } else { 948 if (desc->rate == 10) 949 return 2; 950 if (desc->rate == 20) 951 return 4; 952 if (desc->rate == 55) 953 return 11; 954 if (desc->rate == 110) 955 return 22; 956 } 957 return 2; /* should not get there */ 958 } 959 960 /* 961 * Return the expected ack rate for a frame transmitted at rate `rate'. 962 * XXX: this should depend on the destination node basic rate set. 963 */ 964 static int 965 rum_ack_rate(struct ieee80211com *ic, int rate) 966 { 967 switch (rate) { 968 /* CCK rates */ 969 case 2: 970 return 2; 971 case 4: 972 case 11: 973 case 22: 974 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 975 976 /* OFDM rates */ 977 case 12: 978 case 18: 979 return 12; 980 case 24: 981 case 36: 982 return 24; 983 case 48: 984 case 72: 985 case 96: 986 case 108: 987 return 48; 988 } 989 990 /* default to 1Mbps */ 991 return 2; 992 } 993 994 /* 995 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 996 * The function automatically determines the operating mode depending on the 997 * given rate. `flags' indicates whether short preamble is in use or not. 998 */ 999 static uint16_t 1000 rum_txtime(int len, int rate, uint32_t flags) 1001 { 1002 uint16_t txtime; 1003 1004 if (RUM_RATE_IS_OFDM(rate)) { 1005 /* IEEE Std 802.11a-1999, pp. 37 */ 1006 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 1007 txtime = 16 + 4 + 4 * txtime + 6; 1008 } else { 1009 /* IEEE Std 802.11b-1999, pp. 28 */ 1010 txtime = (16 * len + rate - 1) / rate; 1011 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1012 txtime += 72 + 24; 1013 else 1014 txtime += 144 + 48; 1015 } 1016 return txtime; 1017 } 1018 1019 static uint8_t 1020 rum_plcp_signal(int rate) 1021 { 1022 switch (rate) { 1023 /* CCK rates (returned values are device-dependent) */ 1024 case 2: return 0x0; 1025 case 4: return 0x1; 1026 case 11: return 0x2; 1027 case 22: return 0x3; 1028 1029 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1030 case 12: return 0xb; 1031 case 18: return 0xf; 1032 case 24: return 0xa; 1033 case 36: return 0xe; 1034 case 48: return 0x9; 1035 case 72: return 0xd; 1036 case 96: return 0x8; 1037 case 108: return 0xc; 1038 1039 /* unsupported rates (should not get there) */ 1040 default: return 0xff; 1041 } 1042 } 1043 1044 static void 1045 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1046 uint32_t flags, uint16_t xflags, int len, int rate) 1047 { 1048 struct ieee80211com *ic = &sc->sc_ic; 1049 uint16_t plcp_length; 1050 int remainder; 1051 1052 desc->flags = htole32(flags); 1053 desc->flags |= htole32(RT2573_TX_VALID); 1054 desc->flags |= htole32(len << 16); 1055 1056 desc->xflags = htole16(xflags); 1057 1058 desc->wme = htole16( 1059 RT2573_QID(0) | 1060 RT2573_AIFSN(2) | 1061 RT2573_LOGCWMIN(4) | 1062 RT2573_LOGCWMAX(10)); 1063 1064 /* setup PLCP fields */ 1065 desc->plcp_signal = rum_plcp_signal(rate); 1066 desc->plcp_service = 4; 1067 1068 len += IEEE80211_CRC_LEN; 1069 if (RUM_RATE_IS_OFDM(rate)) { 1070 desc->flags |= htole32(RT2573_TX_OFDM); 1071 1072 plcp_length = len & 0xfff; 1073 desc->plcp_length_hi = plcp_length >> 6; 1074 desc->plcp_length_lo = plcp_length & 0x3f; 1075 } else { 1076 plcp_length = (16 * len + rate - 1) / rate; 1077 if (rate == 22) { 1078 remainder = (16 * len) % 22; 1079 if (remainder != 0 && remainder < 7) 1080 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1081 } 1082 desc->plcp_length_hi = plcp_length >> 8; 1083 desc->plcp_length_lo = plcp_length & 0xff; 1084 1085 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1086 desc->plcp_signal |= 0x08; 1087 } 1088 } 1089 1090 #define RUM_TX_TIMEOUT 5000 1091 1092 static int 1093 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1094 { 1095 struct ieee80211com *ic = &sc->sc_ic; 1096 struct rum_tx_desc *desc; 1097 struct rum_tx_data *data; 1098 struct ieee80211_frame *wh; 1099 struct ieee80211_key *k; 1100 uint32_t flags = 0; 1101 uint16_t dur; 1102 usbd_status error; 1103 int rate, xferlen, pktlen, needrts = 0, needcts = 0; 1104 1105 wh = mtod(m0, struct ieee80211_frame *); 1106 1107 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1108 k = ieee80211_crypto_encap(ic, ni, m0); 1109 if (k == NULL) { 1110 m_freem(m0); 1111 return ENOBUFS; 1112 } 1113 1114 /* packet header may have moved, reset our local pointer */ 1115 wh = mtod(m0, struct ieee80211_frame *); 1116 } 1117 1118 /* compute actual packet length (including CRC and crypto overhead) */ 1119 pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN; 1120 1121 /* pickup a rate */ 1122 if (IEEE80211_IS_MULTICAST(wh->i_addr1) || 1123 ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1124 IEEE80211_FC0_TYPE_MGT)) { 1125 /* mgmt/multicast frames are sent at the lowest avail. rate */ 1126 rate = ni->ni_rates.rs_rates[0]; 1127 } else if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 1128 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1129 } else 1130 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1131 if (rate == 0) 1132 rate = 2; /* XXX should not happen */ 1133 rate &= IEEE80211_RATE_VAL; 1134 1135 /* check if RTS/CTS or CTS-to-self protection must be used */ 1136 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1137 /* multicast frames are not sent at OFDM rates in 802.11b/g */ 1138 if (pktlen > ic->ic_rtsthreshold) { 1139 needrts = 1; /* RTS/CTS based on frame length */ 1140 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1141 RUM_RATE_IS_OFDM(rate)) { 1142 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 1143 needcts = 1; /* CTS-to-self */ 1144 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 1145 needrts = 1; /* RTS/CTS */ 1146 } 1147 } 1148 if (needrts || needcts) { 1149 struct mbuf *mprot; 1150 int protrate, ackrate; 1151 1152 protrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1153 ackrate = rum_ack_rate(ic, rate); 1154 1155 dur = rum_txtime(pktlen, rate, ic->ic_flags) + 1156 rum_txtime(RUM_ACK_SIZE, ackrate, ic->ic_flags) + 1157 2 * sc->sifs; 1158 if (needrts) { 1159 dur += rum_txtime(RUM_CTS_SIZE, rum_ack_rate(ic, 1160 protrate), ic->ic_flags) + sc->sifs; 1161 mprot = ieee80211_get_rts(ic, wh, dur); 1162 } else { 1163 mprot = ieee80211_get_cts_to_self(ic, dur); 1164 } 1165 if (mprot == NULL) { 1166 aprint_error_dev(sc->sc_dev, 1167 "couldn't allocate protection frame\n"); 1168 m_freem(m0); 1169 return ENOBUFS; 1170 } 1171 1172 data = &sc->tx_data[sc->tx_cur]; 1173 desc = (struct rum_tx_desc *)data->buf; 1174 1175 /* avoid multiple free() of the same node for each fragment */ 1176 data->ni = ieee80211_ref_node(ni); 1177 1178 m_copydata(mprot, 0, mprot->m_pkthdr.len, 1179 data->buf + RT2573_TX_DESC_SIZE); 1180 rum_setup_tx_desc(sc, desc, 1181 (needrts ? RT2573_TX_NEED_ACK : 0) | RT2573_TX_MORE_FRAG, 1182 0, mprot->m_pkthdr.len, protrate); 1183 1184 /* no roundup necessary here */ 1185 xferlen = RT2573_TX_DESC_SIZE + mprot->m_pkthdr.len; 1186 1187 /* XXX may want to pass the protection frame to BPF */ 1188 1189 /* mbuf is no longer needed */ 1190 m_freem(mprot); 1191 1192 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, 1193 xferlen, USBD_FORCE_SHORT_XFER | USBD_NO_COPY, 1194 RUM_TX_TIMEOUT, rum_txeof); 1195 error = usbd_transfer(data->xfer); 1196 if (error != USBD_NORMAL_COMPLETION && 1197 error != USBD_IN_PROGRESS) { 1198 m_freem(m0); 1199 return error; 1200 } 1201 1202 sc->tx_queued++; 1203 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1204 1205 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1206 } 1207 1208 data = &sc->tx_data[sc->tx_cur]; 1209 desc = (struct rum_tx_desc *)data->buf; 1210 1211 data->ni = ni; 1212 1213 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1214 flags |= RT2573_TX_NEED_ACK; 1215 1216 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1217 ic->ic_flags) + sc->sifs; 1218 *(uint16_t *)wh->i_dur = htole16(dur); 1219 1220 /* tell hardware to set timestamp in probe responses */ 1221 if ((wh->i_fc[0] & 1222 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1223 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1224 flags |= RT2573_TX_TIMESTAMP; 1225 } 1226 1227 if (sc->sc_drvbpf != NULL) { 1228 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1229 1230 tap->wt_flags = 0; 1231 tap->wt_rate = rate; 1232 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1233 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1234 tap->wt_antenna = sc->tx_ant; 1235 1236 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1237 } 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 error = usbd_transfer(data->xfer); 1262 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1263 return error; 1264 1265 sc->tx_queued++; 1266 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 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 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1281 return; 1282 1283 for (;;) { 1284 IF_POLL(&ic->ic_mgtq, m0); 1285 if (m0 != NULL) { 1286 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1287 ifp->if_flags |= IFF_OACTIVE; 1288 break; 1289 } 1290 IF_DEQUEUE(&ic->ic_mgtq, m0); 1291 1292 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1293 m0->m_pkthdr.rcvif = NULL; 1294 bpf_mtap3(ic->ic_rawbpf, m0); 1295 if (rum_tx_data(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 - 1) { 1305 ifp->if_flags |= IFF_OACTIVE; 1306 break; 1307 } 1308 IFQ_DEQUEUE(&ifp->if_snd, m0); 1309 if (m0->m_len < (int)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 bpf_mtap(ifp, m0); 1320 m0 = ieee80211_encap(ic, m0, ni); 1321 if (m0 == NULL) { 1322 ieee80211_free_node(ni); 1323 continue; 1324 } 1325 bpf_mtap3(ic->ic_rawbpf, m0); 1326 if (rum_tx_data(sc, m0, ni) != 0) { 1327 ieee80211_free_node(ni); 1328 ifp->if_oerrors++; 1329 break; 1330 } 1331 } 1332 1333 sc->sc_tx_timer = 5; 1334 ifp->if_timer = 1; 1335 } 1336 } 1337 1338 static void 1339 rum_watchdog(struct ifnet *ifp) 1340 { 1341 struct rum_softc *sc = ifp->if_softc; 1342 struct ieee80211com *ic = &sc->sc_ic; 1343 1344 ifp->if_timer = 0; 1345 1346 if (sc->sc_tx_timer > 0) { 1347 if (--sc->sc_tx_timer == 0) { 1348 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1349 /*rum_init(ifp); XXX needs a process context! */ 1350 ifp->if_oerrors++; 1351 return; 1352 } 1353 ifp->if_timer = 1; 1354 } 1355 1356 ieee80211_watchdog(ic); 1357 } 1358 1359 static int 1360 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1361 { 1362 #define IS_RUNNING(ifp) \ 1363 (((ifp)->if_flags & IFF_UP) && ((ifp)->if_flags & IFF_RUNNING)) 1364 1365 struct rum_softc *sc = ifp->if_softc; 1366 struct ieee80211com *ic = &sc->sc_ic; 1367 int s, error = 0; 1368 1369 s = splnet(); 1370 1371 switch (cmd) { 1372 case SIOCSIFFLAGS: 1373 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1374 break; 1375 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1376 case IFF_UP|IFF_RUNNING: 1377 rum_update_promisc(sc); 1378 break; 1379 case IFF_UP: 1380 rum_init(ifp); 1381 break; 1382 case IFF_RUNNING: 1383 rum_stop(ifp, 1); 1384 break; 1385 case 0: 1386 break; 1387 } 1388 break; 1389 1390 case SIOCADDMULTI: 1391 case SIOCDELMULTI: 1392 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1393 error = 0; 1394 } 1395 break; 1396 1397 default: 1398 error = ieee80211_ioctl(ic, cmd, data); 1399 } 1400 1401 if (error == ENETRESET) { 1402 if (IS_RUNNING(ifp) && 1403 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1404 rum_init(ifp); 1405 error = 0; 1406 } 1407 1408 splx(s); 1409 1410 return error; 1411 #undef IS_RUNNING 1412 } 1413 1414 static void 1415 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1416 { 1417 usb_device_request_t req; 1418 usbd_status error; 1419 1420 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1421 req.bRequest = RT2573_READ_EEPROM; 1422 USETW(req.wValue, 0); 1423 USETW(req.wIndex, addr); 1424 USETW(req.wLength, len); 1425 1426 error = usbd_do_request(sc->sc_udev, &req, buf); 1427 if (error != 0) { 1428 printf("%s: could not read EEPROM: %s\n", 1429 device_xname(sc->sc_dev), usbd_errstr(error)); 1430 } 1431 } 1432 1433 static uint32_t 1434 rum_read(struct rum_softc *sc, uint16_t reg) 1435 { 1436 uint32_t val; 1437 1438 rum_read_multi(sc, reg, &val, sizeof val); 1439 1440 return le32toh(val); 1441 } 1442 1443 static void 1444 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1445 { 1446 usb_device_request_t req; 1447 usbd_status error; 1448 1449 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1450 req.bRequest = RT2573_READ_MULTI_MAC; 1451 USETW(req.wValue, 0); 1452 USETW(req.wIndex, reg); 1453 USETW(req.wLength, len); 1454 1455 error = usbd_do_request(sc->sc_udev, &req, buf); 1456 if (error != 0) { 1457 printf("%s: could not multi read MAC register: %s\n", 1458 device_xname(sc->sc_dev), usbd_errstr(error)); 1459 } 1460 } 1461 1462 static void 1463 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1464 { 1465 uint32_t tmp = htole32(val); 1466 1467 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1468 } 1469 1470 static void 1471 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1472 { 1473 usb_device_request_t req; 1474 usbd_status error; 1475 1476 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1477 req.bRequest = RT2573_WRITE_MULTI_MAC; 1478 USETW(req.wValue, 0); 1479 USETW(req.wIndex, reg); 1480 USETW(req.wLength, len); 1481 1482 error = usbd_do_request(sc->sc_udev, &req, buf); 1483 if (error != 0) { 1484 printf("%s: could not multi write MAC register: %s\n", 1485 device_xname(sc->sc_dev), usbd_errstr(error)); 1486 } 1487 } 1488 1489 static void 1490 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1491 { 1492 uint32_t tmp; 1493 int ntries; 1494 1495 for (ntries = 0; ntries < 5; ntries++) { 1496 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1497 break; 1498 } 1499 if (ntries == 5) { 1500 printf("%s: could not write to BBP\n", device_xname(sc->sc_dev)); 1501 return; 1502 } 1503 1504 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1505 rum_write(sc, RT2573_PHY_CSR3, tmp); 1506 } 1507 1508 static uint8_t 1509 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1510 { 1511 uint32_t val; 1512 int ntries; 1513 1514 for (ntries = 0; ntries < 5; ntries++) { 1515 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1516 break; 1517 } 1518 if (ntries == 5) { 1519 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1520 return 0; 1521 } 1522 1523 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1524 rum_write(sc, RT2573_PHY_CSR3, val); 1525 1526 for (ntries = 0; ntries < 100; ntries++) { 1527 val = rum_read(sc, RT2573_PHY_CSR3); 1528 if (!(val & RT2573_BBP_BUSY)) 1529 return val & 0xff; 1530 DELAY(1); 1531 } 1532 1533 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1534 return 0; 1535 } 1536 1537 static void 1538 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1539 { 1540 uint32_t tmp; 1541 int ntries; 1542 1543 for (ntries = 0; ntries < 5; ntries++) { 1544 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1545 break; 1546 } 1547 if (ntries == 5) { 1548 printf("%s: could not write to RF\n", device_xname(sc->sc_dev)); 1549 return; 1550 } 1551 1552 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1553 (reg & 3); 1554 rum_write(sc, RT2573_PHY_CSR4, tmp); 1555 1556 /* remember last written value in sc */ 1557 sc->rf_regs[reg] = val; 1558 1559 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1560 } 1561 1562 static void 1563 rum_select_antenna(struct rum_softc *sc) 1564 { 1565 uint8_t bbp4, bbp77; 1566 uint32_t tmp; 1567 1568 bbp4 = rum_bbp_read(sc, 4); 1569 bbp77 = rum_bbp_read(sc, 77); 1570 1571 /* TBD */ 1572 1573 /* make sure Rx is disabled before switching antenna */ 1574 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1575 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1576 1577 rum_bbp_write(sc, 4, bbp4); 1578 rum_bbp_write(sc, 77, bbp77); 1579 1580 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1581 } 1582 1583 /* 1584 * Enable multi-rate retries for frames sent at OFDM rates. 1585 * In 802.11b/g mode, allow fallback to CCK rates. 1586 */ 1587 static void 1588 rum_enable_mrr(struct rum_softc *sc) 1589 { 1590 struct ieee80211com *ic = &sc->sc_ic; 1591 uint32_t tmp; 1592 1593 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1594 1595 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1596 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1597 tmp |= RT2573_MRR_CCK_FALLBACK; 1598 tmp |= RT2573_MRR_ENABLED; 1599 1600 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1601 } 1602 1603 static void 1604 rum_set_txpreamble(struct rum_softc *sc) 1605 { 1606 uint32_t tmp; 1607 1608 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1609 1610 tmp &= ~RT2573_SHORT_PREAMBLE; 1611 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1612 tmp |= RT2573_SHORT_PREAMBLE; 1613 1614 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1615 } 1616 1617 static void 1618 rum_set_basicrates(struct rum_softc *sc) 1619 { 1620 struct ieee80211com *ic = &sc->sc_ic; 1621 1622 /* update basic rate set */ 1623 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1624 /* 11b basic rates: 1, 2Mbps */ 1625 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1626 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1627 /* 11a basic rates: 6, 12, 24Mbps */ 1628 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1629 } else { 1630 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1631 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1632 } 1633 } 1634 1635 /* 1636 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1637 * driver. 1638 */ 1639 static void 1640 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1641 { 1642 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1643 uint32_t tmp; 1644 1645 /* update all BBP registers that depend on the band */ 1646 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1647 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1648 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1649 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1650 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1651 } 1652 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1653 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1654 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1655 } 1656 1657 sc->bbp17 = bbp17; 1658 rum_bbp_write(sc, 17, bbp17); 1659 rum_bbp_write(sc, 96, bbp96); 1660 rum_bbp_write(sc, 104, bbp104); 1661 1662 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1663 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1664 rum_bbp_write(sc, 75, 0x80); 1665 rum_bbp_write(sc, 86, 0x80); 1666 rum_bbp_write(sc, 88, 0x80); 1667 } 1668 1669 rum_bbp_write(sc, 35, bbp35); 1670 rum_bbp_write(sc, 97, bbp97); 1671 rum_bbp_write(sc, 98, bbp98); 1672 1673 tmp = rum_read(sc, RT2573_PHY_CSR0); 1674 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1675 if (IEEE80211_IS_CHAN_2GHZ(c)) 1676 tmp |= RT2573_PA_PE_2GHZ; 1677 else 1678 tmp |= RT2573_PA_PE_5GHZ; 1679 rum_write(sc, RT2573_PHY_CSR0, tmp); 1680 1681 /* 802.11a uses a 16 microseconds short interframe space */ 1682 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1683 } 1684 1685 static void 1686 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1687 { 1688 struct ieee80211com *ic = &sc->sc_ic; 1689 const struct rfprog *rfprog; 1690 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1691 int8_t power; 1692 u_int i, chan; 1693 1694 chan = ieee80211_chan2ieee(ic, c); 1695 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1696 return; 1697 1698 /* select the appropriate RF settings based on what EEPROM says */ 1699 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1700 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1701 1702 /* find the settings for this channel (we know it exists) */ 1703 for (i = 0; rfprog[i].chan != chan; i++); 1704 1705 power = sc->txpow[i]; 1706 if (power < 0) { 1707 bbp94 += power; 1708 power = 0; 1709 } else if (power > 31) { 1710 bbp94 += power - 31; 1711 power = 31; 1712 } 1713 1714 /* 1715 * If we are switching from the 2GHz band to the 5GHz band or 1716 * vice-versa, BBP registers need to be reprogrammed. 1717 */ 1718 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1719 rum_select_band(sc, c); 1720 rum_select_antenna(sc); 1721 } 1722 ic->ic_curchan = c; 1723 1724 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1725 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1726 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1727 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1728 1729 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1730 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1731 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1732 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1733 1734 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1735 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1736 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1737 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1738 1739 DELAY(10); 1740 1741 /* enable smart mode for MIMO-capable RFs */ 1742 bbp3 = rum_bbp_read(sc, 3); 1743 1744 bbp3 &= ~RT2573_SMART_MODE; 1745 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1746 bbp3 |= RT2573_SMART_MODE; 1747 1748 rum_bbp_write(sc, 3, bbp3); 1749 1750 if (bbp94 != RT2573_BBPR94_DEFAULT) 1751 rum_bbp_write(sc, 94, bbp94); 1752 } 1753 1754 /* 1755 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1756 * and HostAP operating modes. 1757 */ 1758 static void 1759 rum_enable_tsf_sync(struct rum_softc *sc) 1760 { 1761 struct ieee80211com *ic = &sc->sc_ic; 1762 uint32_t tmp; 1763 1764 if (ic->ic_opmode != IEEE80211_M_STA) { 1765 /* 1766 * Change default 16ms TBTT adjustment to 8ms. 1767 * Must be done before enabling beacon generation. 1768 */ 1769 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1770 } 1771 1772 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1773 1774 /* set beacon interval (in 1/16ms unit) */ 1775 tmp |= ic->ic_bss->ni_intval * 16; 1776 1777 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1778 if (ic->ic_opmode == IEEE80211_M_STA) 1779 tmp |= RT2573_TSF_MODE(1); 1780 else 1781 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1782 1783 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1784 } 1785 1786 static void 1787 rum_update_slot(struct rum_softc *sc) 1788 { 1789 struct ieee80211com *ic = &sc->sc_ic; 1790 uint8_t slottime; 1791 uint32_t tmp; 1792 1793 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1794 1795 tmp = rum_read(sc, RT2573_MAC_CSR9); 1796 tmp = (tmp & ~0xff) | slottime; 1797 rum_write(sc, RT2573_MAC_CSR9, tmp); 1798 1799 DPRINTF(("setting slot time to %uus\n", slottime)); 1800 } 1801 1802 static void 1803 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1804 { 1805 uint32_t tmp; 1806 1807 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1808 rum_write(sc, RT2573_MAC_CSR4, tmp); 1809 1810 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1811 rum_write(sc, RT2573_MAC_CSR5, tmp); 1812 } 1813 1814 static void 1815 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1816 { 1817 uint32_t tmp; 1818 1819 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1820 rum_write(sc, RT2573_MAC_CSR2, tmp); 1821 1822 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1823 rum_write(sc, RT2573_MAC_CSR3, tmp); 1824 } 1825 1826 static void 1827 rum_update_promisc(struct rum_softc *sc) 1828 { 1829 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1830 uint32_t tmp; 1831 1832 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1833 1834 tmp &= ~RT2573_DROP_NOT_TO_ME; 1835 if (!(ifp->if_flags & IFF_PROMISC)) 1836 tmp |= RT2573_DROP_NOT_TO_ME; 1837 1838 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1839 1840 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1841 "entering" : "leaving")); 1842 } 1843 1844 static const char * 1845 rum_get_rf(int rev) 1846 { 1847 switch (rev) { 1848 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1849 case RT2573_RF_2528: return "RT2528"; 1850 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1851 case RT2573_RF_5226: return "RT5226"; 1852 default: return "unknown"; 1853 } 1854 } 1855 1856 static void 1857 rum_read_eeprom(struct rum_softc *sc) 1858 { 1859 struct ieee80211com *ic = &sc->sc_ic; 1860 uint16_t val; 1861 #ifdef RUM_DEBUG 1862 int i; 1863 #endif 1864 1865 /* read MAC/BBP type */ 1866 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1867 sc->macbbp_rev = le16toh(val); 1868 1869 /* read MAC address */ 1870 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1871 1872 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1873 val = le16toh(val); 1874 sc->rf_rev = (val >> 11) & 0x1f; 1875 sc->hw_radio = (val >> 10) & 0x1; 1876 sc->rx_ant = (val >> 4) & 0x3; 1877 sc->tx_ant = (val >> 2) & 0x3; 1878 sc->nb_ant = val & 0x3; 1879 1880 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1881 1882 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1883 val = le16toh(val); 1884 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1885 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1886 1887 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1888 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1889 1890 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1891 val = le16toh(val); 1892 if ((val & 0xff) != 0xff) 1893 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1894 1895 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1896 val = le16toh(val); 1897 if ((val & 0xff) != 0xff) 1898 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1899 1900 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1901 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1902 1903 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1904 val = le16toh(val); 1905 if ((val & 0xff) != 0xff) 1906 sc->rffreq = val & 0xff; 1907 1908 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1909 1910 /* read Tx power for all a/b/g channels */ 1911 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1912 /* XXX default Tx power for 802.11a channels */ 1913 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1914 #ifdef RUM_DEBUG 1915 for (i = 0; i < 14; i++) 1916 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1917 #endif 1918 1919 /* read default values for BBP registers */ 1920 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1921 #ifdef RUM_DEBUG 1922 for (i = 0; i < 14; i++) { 1923 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1924 continue; 1925 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1926 sc->bbp_prom[i].val)); 1927 } 1928 #endif 1929 } 1930 1931 static int 1932 rum_bbp_init(struct rum_softc *sc) 1933 { 1934 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1935 unsigned int i, ntries; 1936 uint8_t val; 1937 1938 /* wait for BBP to be ready */ 1939 for (ntries = 0; ntries < 100; ntries++) { 1940 val = rum_bbp_read(sc, 0); 1941 if (val != 0 && val != 0xff) 1942 break; 1943 DELAY(1000); 1944 } 1945 if (ntries == 100) { 1946 printf("%s: timeout waiting for BBP\n", 1947 device_xname(sc->sc_dev)); 1948 return EIO; 1949 } 1950 1951 /* initialize BBP registers to default values */ 1952 for (i = 0; i < N(rum_def_bbp); i++) 1953 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1954 1955 /* write vendor-specific BBP values (from EEPROM) */ 1956 for (i = 0; i < 16; i++) { 1957 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1958 continue; 1959 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1960 } 1961 1962 return 0; 1963 #undef N 1964 } 1965 1966 static int 1967 rum_init(struct ifnet *ifp) 1968 { 1969 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1970 struct rum_softc *sc = ifp->if_softc; 1971 struct ieee80211com *ic = &sc->sc_ic; 1972 struct rum_rx_data *data; 1973 uint32_t tmp; 1974 usbd_status error = 0; 1975 unsigned int i, ntries; 1976 1977 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1978 if (rum_attachhook(sc)) 1979 goto fail; 1980 } 1981 1982 rum_stop(ifp, 0); 1983 1984 /* initialize MAC registers to default values */ 1985 for (i = 0; i < N(rum_def_mac); i++) 1986 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1987 1988 /* set host ready */ 1989 rum_write(sc, RT2573_MAC_CSR1, 3); 1990 rum_write(sc, RT2573_MAC_CSR1, 0); 1991 1992 /* wait for BBP/RF to wakeup */ 1993 for (ntries = 0; ntries < 1000; ntries++) { 1994 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1995 break; 1996 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1997 DELAY(1000); 1998 } 1999 if (ntries == 1000) { 2000 printf("%s: timeout waiting for BBP/RF to wakeup\n", 2001 device_xname(sc->sc_dev)); 2002 goto fail; 2003 } 2004 2005 if ((error = rum_bbp_init(sc)) != 0) 2006 goto fail; 2007 2008 /* select default channel */ 2009 rum_select_band(sc, ic->ic_curchan); 2010 rum_select_antenna(sc); 2011 rum_set_chan(sc, ic->ic_curchan); 2012 2013 /* clear STA registers */ 2014 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2015 2016 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2017 rum_set_macaddr(sc, ic->ic_myaddr); 2018 2019 /* initialize ASIC */ 2020 rum_write(sc, RT2573_MAC_CSR1, 4); 2021 2022 /* 2023 * Allocate xfer for AMRR statistics requests. 2024 */ 2025 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 2026 if (sc->amrr_xfer == NULL) { 2027 printf("%s: could not allocate AMRR xfer\n", 2028 device_xname(sc->sc_dev)); 2029 goto fail; 2030 } 2031 2032 /* 2033 * Open Tx and Rx USB bulk pipes. 2034 */ 2035 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2036 &sc->sc_tx_pipeh); 2037 if (error != 0) { 2038 printf("%s: could not open Tx pipe: %s\n", 2039 device_xname(sc->sc_dev), usbd_errstr(error)); 2040 goto fail; 2041 } 2042 2043 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2044 &sc->sc_rx_pipeh); 2045 if (error != 0) { 2046 printf("%s: could not open Rx pipe: %s\n", 2047 device_xname(sc->sc_dev), usbd_errstr(error)); 2048 goto fail; 2049 } 2050 2051 /* 2052 * Allocate Tx and Rx xfer queues. 2053 */ 2054 error = rum_alloc_tx_list(sc); 2055 if (error != 0) { 2056 printf("%s: could not allocate Tx list\n", 2057 device_xname(sc->sc_dev)); 2058 goto fail; 2059 } 2060 2061 error = rum_alloc_rx_list(sc); 2062 if (error != 0) { 2063 printf("%s: could not allocate Rx list\n", 2064 device_xname(sc->sc_dev)); 2065 goto fail; 2066 } 2067 2068 /* 2069 * Start up the receive pipe. 2070 */ 2071 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2072 data = &sc->rx_data[i]; 2073 2074 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2075 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2076 error = usbd_transfer(data->xfer); 2077 if (error != USBD_NORMAL_COMPLETION && 2078 error != USBD_IN_PROGRESS) { 2079 printf("%s: could not queue Rx transfer\n", 2080 device_xname(sc->sc_dev)); 2081 goto fail; 2082 } 2083 } 2084 2085 /* update Rx filter */ 2086 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2087 2088 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2089 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2090 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2091 RT2573_DROP_ACKCTS; 2092 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2093 tmp |= RT2573_DROP_TODS; 2094 if (!(ifp->if_flags & IFF_PROMISC)) 2095 tmp |= RT2573_DROP_NOT_TO_ME; 2096 } 2097 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2098 2099 ifp->if_flags &= ~IFF_OACTIVE; 2100 ifp->if_flags |= IFF_RUNNING; 2101 2102 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2103 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2104 else 2105 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2106 2107 return 0; 2108 2109 fail: rum_stop(ifp, 1); 2110 return error; 2111 #undef N 2112 } 2113 2114 static void 2115 rum_stop(struct ifnet *ifp, int disable) 2116 { 2117 struct rum_softc *sc = ifp->if_softc; 2118 struct ieee80211com *ic = &sc->sc_ic; 2119 uint32_t tmp; 2120 2121 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2122 2123 sc->sc_tx_timer = 0; 2124 ifp->if_timer = 0; 2125 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2126 2127 /* disable Rx */ 2128 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2129 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2130 2131 /* reset ASIC */ 2132 rum_write(sc, RT2573_MAC_CSR1, 3); 2133 rum_write(sc, RT2573_MAC_CSR1, 0); 2134 2135 if (sc->amrr_xfer != NULL) { 2136 usbd_free_xfer(sc->amrr_xfer); 2137 sc->amrr_xfer = NULL; 2138 } 2139 2140 if (sc->sc_rx_pipeh != NULL) { 2141 usbd_abort_pipe(sc->sc_rx_pipeh); 2142 usbd_close_pipe(sc->sc_rx_pipeh); 2143 sc->sc_rx_pipeh = NULL; 2144 } 2145 2146 if (sc->sc_tx_pipeh != NULL) { 2147 usbd_abort_pipe(sc->sc_tx_pipeh); 2148 usbd_close_pipe(sc->sc_tx_pipeh); 2149 sc->sc_tx_pipeh = NULL; 2150 } 2151 2152 rum_free_rx_list(sc); 2153 rum_free_tx_list(sc); 2154 } 2155 2156 static int 2157 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2158 { 2159 usb_device_request_t req; 2160 uint16_t reg = RT2573_MCU_CODE_BASE; 2161 usbd_status error; 2162 2163 /* copy firmware image into NIC */ 2164 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2165 rum_write(sc, reg, UGETDW(ucode)); 2166 2167 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2168 req.bRequest = RT2573_MCU_CNTL; 2169 USETW(req.wValue, RT2573_MCU_RUN); 2170 USETW(req.wIndex, 0); 2171 USETW(req.wLength, 0); 2172 2173 error = usbd_do_request(sc->sc_udev, &req, NULL); 2174 if (error != 0) { 2175 printf("%s: could not run firmware: %s\n", 2176 device_xname(sc->sc_dev), usbd_errstr(error)); 2177 } 2178 return error; 2179 } 2180 2181 static int 2182 rum_prepare_beacon(struct rum_softc *sc) 2183 { 2184 struct ieee80211com *ic = &sc->sc_ic; 2185 struct rum_tx_desc desc; 2186 struct mbuf *m0; 2187 int rate; 2188 2189 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2190 if (m0 == NULL) { 2191 aprint_error_dev(sc->sc_dev, 2192 "could not allocate beacon frame\n"); 2193 return ENOBUFS; 2194 } 2195 2196 /* send beacons at the lowest available rate */ 2197 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2198 2199 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2200 m0->m_pkthdr.len, rate); 2201 2202 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2203 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2204 2205 /* copy beacon header and payload into NIC memory */ 2206 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2207 m0->m_pkthdr.len); 2208 2209 m_freem(m0); 2210 2211 return 0; 2212 } 2213 2214 static void 2215 rum_newassoc(struct ieee80211_node *ni, int isnew) 2216 { 2217 /* start with lowest Tx rate */ 2218 ni->ni_txrate = 0; 2219 } 2220 2221 static void 2222 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2223 { 2224 int i; 2225 2226 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2227 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2228 2229 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2230 2231 /* set rate to some reasonable initial value */ 2232 for (i = ni->ni_rates.rs_nrates - 1; 2233 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2234 i--); 2235 ni->ni_txrate = i; 2236 2237 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2238 } 2239 2240 static void 2241 rum_amrr_timeout(void *arg) 2242 { 2243 struct rum_softc *sc = arg; 2244 usb_device_request_t req; 2245 2246 /* 2247 * Asynchronously read statistic registers (cleared by read). 2248 */ 2249 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2250 req.bRequest = RT2573_READ_MULTI_MAC; 2251 USETW(req.wValue, 0); 2252 USETW(req.wIndex, RT2573_STA_CSR0); 2253 USETW(req.wLength, sizeof sc->sta); 2254 2255 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2256 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2257 rum_amrr_update); 2258 (void)usbd_transfer(sc->amrr_xfer); 2259 } 2260 2261 static void 2262 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2263 usbd_status status) 2264 { 2265 struct rum_softc *sc = (struct rum_softc *)priv; 2266 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2267 2268 if (status != USBD_NORMAL_COMPLETION) { 2269 printf("%s: could not retrieve Tx statistics - cancelling " 2270 "automatic rate control\n", device_xname(sc->sc_dev)); 2271 return; 2272 } 2273 2274 /* count TX retry-fail as Tx errors */ 2275 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2276 2277 sc->amn.amn_retrycnt = 2278 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2279 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2280 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2281 2282 sc->amn.amn_txcnt = 2283 sc->amn.amn_retrycnt + 2284 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2285 2286 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2287 2288 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2289 } 2290 2291 static int 2292 rum_activate(device_t self, enum devact act) 2293 { 2294 switch (act) { 2295 case DVACT_DEACTIVATE: 2296 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2297 return 0; 2298 default: 2299 return 0; 2300 } 2301 } 2302 2303 MODULE(MODULE_CLASS_DRIVER, if_rum, NULL); 2304 2305 #ifdef _MODULE 2306 #include "ioconf.c" 2307 #endif 2308 2309 static int 2310 if_rum_modcmd(modcmd_t cmd, void *aux) 2311 { 2312 int error = 0; 2313 2314 switch (cmd) { 2315 case MODULE_CMD_INIT: 2316 #ifdef _MODULE 2317 error = config_init_component(cfdriver_ioconf_rum, 2318 cfattach_ioconf_rum, cfdata_ioconf_rum); 2319 #endif 2320 return error; 2321 case MODULE_CMD_FINI: 2322 #ifdef _MODULE 2323 error = config_fini_component(cfdriver_ioconf_rum, 2324 cfattach_ioconf_rum, cfdata_ioconf_rum); 2325 #endif 2326 return error; 2327 default: 2328 return ENOTTY; 2329 } 2330 } 2331