if_rum.c revision 1.44
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.44 2012/12/27 16:42:32 skrll 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 1.44 2012/12/27 16:42:32 skrll 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_BELKIN, USB_PRODUCT_BELKIN_F5D9050C }, 100 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB200 }, 101 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 102 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GR }, 103 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 104 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_RT2573 }, 105 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GL }, 106 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GPX }, 107 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 108 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 109 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 110 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 111 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA110 }, 112 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA111 }, 113 { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7318 }, 114 { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7618 }, 115 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 116 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWI05GS }, 117 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 118 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 119 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254LB }, 120 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254V2AP }, 121 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 122 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_G54HP }, 123 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, 124 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HG }, 125 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_WLIUCG }, 126 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 127 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 128 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 129 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_4 }, 130 { USB_VENDOR_NOVATECH, USB_PRODUCT_NOVATECH_RT2573 }, 131 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54HP }, 132 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 133 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 134 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 135 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 136 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_3 }, 137 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 138 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 139 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 140 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 141 { USB_VENDOR_SPARKLAN, USB_PRODUCT_SPARKLAN_RT2573 }, 142 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 }, 143 { USB_VENDOR_ZYXEL, USB_PRODUCT_ZYXEL_RT2573 } 144 }; 145 146 static int rum_attachhook(void *); 147 static int rum_alloc_tx_list(struct rum_softc *); 148 static void rum_free_tx_list(struct rum_softc *); 149 static int rum_alloc_rx_list(struct rum_softc *); 150 static void rum_free_rx_list(struct rum_softc *); 151 static int rum_media_change(struct ifnet *); 152 static void rum_next_scan(void *); 153 static void rum_task(void *); 154 static int rum_newstate(struct ieee80211com *, 155 enum ieee80211_state, int); 156 static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 157 usbd_status); 158 static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 159 usbd_status); 160 static uint8_t rum_rxrate(const struct rum_rx_desc *); 161 static int rum_ack_rate(struct ieee80211com *, int); 162 static uint16_t rum_txtime(int, int, uint32_t); 163 static uint8_t rum_plcp_signal(int); 164 static void rum_setup_tx_desc(struct rum_softc *, 165 struct rum_tx_desc *, uint32_t, uint16_t, int, 166 int); 167 static int rum_tx_data(struct rum_softc *, struct mbuf *, 168 struct ieee80211_node *); 169 static void rum_start(struct ifnet *); 170 static void rum_watchdog(struct ifnet *); 171 static int rum_ioctl(struct ifnet *, u_long, void *); 172 static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 173 int); 174 static uint32_t rum_read(struct rum_softc *, uint16_t); 175 static void rum_read_multi(struct rum_softc *, uint16_t, void *, 176 int); 177 static void rum_write(struct rum_softc *, uint16_t, uint32_t); 178 static void rum_write_multi(struct rum_softc *, uint16_t, void *, 179 size_t); 180 static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 181 static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 182 static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 183 static void rum_select_antenna(struct rum_softc *); 184 static void rum_enable_mrr(struct rum_softc *); 185 static void rum_set_txpreamble(struct rum_softc *); 186 static void rum_set_basicrates(struct rum_softc *); 187 static void rum_select_band(struct rum_softc *, 188 struct ieee80211_channel *); 189 static void rum_set_chan(struct rum_softc *, 190 struct ieee80211_channel *); 191 static void rum_enable_tsf_sync(struct rum_softc *); 192 static void rum_update_slot(struct rum_softc *); 193 static void rum_set_bssid(struct rum_softc *, const uint8_t *); 194 static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 195 static void rum_update_promisc(struct rum_softc *); 196 static const char *rum_get_rf(int); 197 static void rum_read_eeprom(struct rum_softc *); 198 static int rum_bbp_init(struct rum_softc *); 199 static int rum_init(struct ifnet *); 200 static void rum_stop(struct ifnet *, int); 201 static int rum_load_microcode(struct rum_softc *, const u_char *, 202 size_t); 203 static int rum_prepare_beacon(struct rum_softc *); 204 static void rum_newassoc(struct ieee80211_node *, int); 205 static void rum_amrr_start(struct rum_softc *, 206 struct ieee80211_node *); 207 static void rum_amrr_timeout(void *); 208 static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 209 usbd_status status); 210 211 /* 212 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 213 */ 214 static const struct ieee80211_rateset rum_rateset_11a = 215 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 216 217 static const struct ieee80211_rateset rum_rateset_11b = 218 { 4, { 2, 4, 11, 22 } }; 219 220 static const struct ieee80211_rateset rum_rateset_11g = 221 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 222 223 static const struct { 224 uint32_t reg; 225 uint32_t val; 226 } rum_def_mac[] = { 227 RT2573_DEF_MAC 228 }; 229 230 static const struct { 231 uint8_t reg; 232 uint8_t val; 233 } rum_def_bbp[] = { 234 RT2573_DEF_BBP 235 }; 236 237 static const struct rfprog { 238 uint8_t chan; 239 uint32_t r1, r2, r3, r4; 240 } rum_rf5226[] = { 241 RT2573_RF5226 242 }, rum_rf5225[] = { 243 RT2573_RF5225 244 }; 245 246 static int rum_match(device_t, cfdata_t, void *); 247 static void rum_attach(device_t, device_t, void *); 248 static int rum_detach(device_t, int); 249 static int rum_activate(device_t, enum devact); 250 extern struct cfdriver rum_cd; 251 CFATTACH_DECL_NEW(rum, sizeof(struct rum_softc), rum_match, rum_attach, 252 rum_detach, rum_activate); 253 254 static int 255 rum_match(device_t parent, cfdata_t match, void *aux) 256 { 257 struct usb_attach_arg *uaa = aux; 258 259 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 260 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 261 } 262 263 static int 264 rum_attachhook(void *xsc) 265 { 266 struct rum_softc *sc = xsc; 267 firmware_handle_t fwh; 268 const char *name = "rum-rt2573"; 269 u_char *ucode; 270 size_t size; 271 int error; 272 273 if ((error = firmware_open("rum", name, &fwh)) != 0) { 274 printf("%s: failed loadfirmware of file %s (error %d)\n", 275 device_xname(sc->sc_dev), name, error); 276 return error; 277 } 278 size = firmware_get_size(fwh); 279 ucode = firmware_malloc(size); 280 if (ucode == NULL) { 281 printf("%s: failed to allocate firmware memory\n", 282 device_xname(sc->sc_dev)); 283 firmware_close(fwh); 284 return ENOMEM; 285 } 286 error = firmware_read(fwh, 0, ucode, size); 287 firmware_close(fwh); 288 if (error != 0) { 289 printf("%s: failed to read firmware (error %d)\n", 290 device_xname(sc->sc_dev), error); 291 firmware_free(ucode, 0); 292 return error; 293 } 294 295 if (rum_load_microcode(sc, ucode, size) != 0) { 296 printf("%s: could not load 8051 microcode\n", 297 device_xname(sc->sc_dev)); 298 firmware_free(ucode, 0); 299 return ENXIO; 300 } 301 302 firmware_free(ucode, 0); 303 sc->sc_flags |= RT2573_FWLOADED; 304 305 return 0; 306 } 307 308 static void 309 rum_attach(device_t parent, device_t self, void *aux) 310 { 311 struct rum_softc *sc = device_private(self); 312 struct usb_attach_arg *uaa = aux; 313 struct ieee80211com *ic = &sc->sc_ic; 314 struct ifnet *ifp = &sc->sc_if; 315 usb_interface_descriptor_t *id; 316 usb_endpoint_descriptor_t *ed; 317 usbd_status error; 318 char *devinfop; 319 int i, ntries; 320 uint32_t tmp; 321 322 sc->sc_dev = self; 323 sc->sc_udev = uaa->device; 324 sc->sc_flags = 0; 325 326 aprint_naive("\n"); 327 aprint_normal("\n"); 328 329 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 330 aprint_normal_dev(self, "%s\n", devinfop); 331 usbd_devinfo_free(devinfop); 332 333 error = usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0); 334 if (error != 0) { 335 aprint_error_dev(self, "failed to set configuration" 336 ", err=%s\n", usbd_errstr(error)); 337 return; 338 } 339 340 /* get the first interface handle */ 341 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 342 &sc->sc_iface); 343 if (error != 0) { 344 aprint_error_dev(self, "could not get interface handle\n"); 345 return; 346 } 347 348 /* 349 * Find endpoints. 350 */ 351 id = usbd_get_interface_descriptor(sc->sc_iface); 352 353 sc->sc_rx_no = sc->sc_tx_no = -1; 354 for (i = 0; i < id->bNumEndpoints; i++) { 355 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 356 if (ed == NULL) { 357 aprint_error_dev(self, 358 "no endpoint descriptor for iface %d\n", i); 359 return; 360 } 361 362 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 363 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 364 sc->sc_rx_no = ed->bEndpointAddress; 365 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 366 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 367 sc->sc_tx_no = ed->bEndpointAddress; 368 } 369 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 370 aprint_error_dev(self, "missing endpoint\n"); 371 return; 372 } 373 374 usb_init_task(&sc->sc_task, rum_task, sc); 375 callout_init(&sc->sc_scan_ch, 0); 376 377 sc->amrr.amrr_min_success_threshold = 1; 378 sc->amrr.amrr_max_success_threshold = 10; 379 callout_init(&sc->sc_amrr_ch, 0); 380 381 /* retrieve RT2573 rev. no */ 382 for (ntries = 0; ntries < 1000; ntries++) { 383 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 384 break; 385 DELAY(1000); 386 } 387 if (ntries == 1000) { 388 aprint_error_dev(self, "timeout waiting for chip to settle\n"); 389 return; 390 } 391 392 /* retrieve MAC address and various other things from EEPROM */ 393 rum_read_eeprom(sc); 394 395 aprint_normal_dev(self, 396 "MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 397 sc->macbbp_rev, tmp, 398 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 399 400 ic->ic_ifp = ifp; 401 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 402 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 403 ic->ic_state = IEEE80211_S_INIT; 404 405 /* set device capabilities */ 406 ic->ic_caps = 407 IEEE80211_C_IBSS | /* IBSS mode supported */ 408 IEEE80211_C_MONITOR | /* monitor mode supported */ 409 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 410 IEEE80211_C_TXPMGT | /* tx power management */ 411 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 412 IEEE80211_C_SHSLOT | /* short slot time supported */ 413 IEEE80211_C_WPA; /* 802.11i */ 414 415 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 416 /* set supported .11a rates */ 417 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 418 419 /* set supported .11a channels */ 420 for (i = 34; i <= 46; i += 4) { 421 ic->ic_channels[i].ic_freq = 422 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 423 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 424 } 425 for (i = 36; i <= 64; i += 4) { 426 ic->ic_channels[i].ic_freq = 427 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 428 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 429 } 430 for (i = 100; i <= 140; i += 4) { 431 ic->ic_channels[i].ic_freq = 432 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 433 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 434 } 435 for (i = 149; i <= 165; i += 4) { 436 ic->ic_channels[i].ic_freq = 437 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 438 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 439 } 440 } 441 442 /* set supported .11b and .11g rates */ 443 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 444 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 445 446 /* set supported .11b and .11g channels (1 through 14) */ 447 for (i = 1; i <= 14; i++) { 448 ic->ic_channels[i].ic_freq = 449 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 450 ic->ic_channels[i].ic_flags = 451 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 452 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 453 } 454 455 ifp->if_softc = sc; 456 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 457 ifp->if_init = rum_init; 458 ifp->if_ioctl = rum_ioctl; 459 ifp->if_start = rum_start; 460 ifp->if_watchdog = rum_watchdog; 461 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 462 IFQ_SET_READY(&ifp->if_snd); 463 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 464 465 if_attach(ifp); 466 ieee80211_ifattach(ic); 467 ic->ic_newassoc = rum_newassoc; 468 469 /* override state transition machine */ 470 sc->sc_newstate = ic->ic_newstate; 471 ic->ic_newstate = rum_newstate; 472 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 473 474 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 475 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 476 &sc->sc_drvbpf); 477 478 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 479 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 480 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 481 482 sc->sc_txtap_len = sizeof sc->sc_txtapu; 483 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 484 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 485 486 ieee80211_announce(ic); 487 488 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 489 sc->sc_dev); 490 491 return; 492 } 493 494 static int 495 rum_detach(device_t self, int flags) 496 { 497 struct rum_softc *sc = device_private(self); 498 struct ieee80211com *ic = &sc->sc_ic; 499 struct ifnet *ifp = &sc->sc_if; 500 int s; 501 502 if (!ifp->if_softc) 503 return 0; 504 505 s = splusb(); 506 507 rum_stop(ifp, 1); 508 usb_rem_task(sc->sc_udev, &sc->sc_task); 509 callout_stop(&sc->sc_scan_ch); 510 callout_stop(&sc->sc_amrr_ch); 511 512 if (sc->amrr_xfer != NULL) { 513 usbd_free_xfer(sc->amrr_xfer); 514 sc->amrr_xfer = NULL; 515 } 516 517 if (sc->sc_rx_pipeh != NULL) { 518 usbd_abort_pipe(sc->sc_rx_pipeh); 519 usbd_close_pipe(sc->sc_rx_pipeh); 520 } 521 522 if (sc->sc_tx_pipeh != NULL) { 523 usbd_abort_pipe(sc->sc_tx_pipeh); 524 usbd_close_pipe(sc->sc_tx_pipeh); 525 } 526 527 bpf_detach(ifp); 528 ieee80211_ifdetach(ic); /* free all nodes */ 529 if_detach(ifp); 530 531 splx(s); 532 533 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 534 535 return 0; 536 } 537 538 static int 539 rum_alloc_tx_list(struct rum_softc *sc) 540 { 541 struct rum_tx_data *data; 542 int i, error; 543 544 sc->tx_cur = sc->tx_queued = 0; 545 546 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 547 data = &sc->tx_data[i]; 548 549 data->sc = sc; 550 551 data->xfer = usbd_alloc_xfer(sc->sc_udev); 552 if (data->xfer == NULL) { 553 printf("%s: could not allocate tx xfer\n", 554 device_xname(sc->sc_dev)); 555 error = ENOMEM; 556 goto fail; 557 } 558 559 data->buf = usbd_alloc_buffer(data->xfer, 560 RT2573_TX_DESC_SIZE + IEEE80211_MAX_LEN); 561 if (data->buf == NULL) { 562 printf("%s: could not allocate tx buffer\n", 563 device_xname(sc->sc_dev)); 564 error = ENOMEM; 565 goto fail; 566 } 567 568 /* clean Tx descriptor */ 569 memset(data->buf, 0, RT2573_TX_DESC_SIZE); 570 } 571 572 return 0; 573 574 fail: rum_free_tx_list(sc); 575 return error; 576 } 577 578 static void 579 rum_free_tx_list(struct rum_softc *sc) 580 { 581 struct rum_tx_data *data; 582 int i; 583 584 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 585 data = &sc->tx_data[i]; 586 587 if (data->xfer != NULL) { 588 usbd_free_xfer(data->xfer); 589 data->xfer = NULL; 590 } 591 592 if (data->ni != NULL) { 593 ieee80211_free_node(data->ni); 594 data->ni = NULL; 595 } 596 } 597 } 598 599 static int 600 rum_alloc_rx_list(struct rum_softc *sc) 601 { 602 struct rum_rx_data *data; 603 int i, error; 604 605 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 606 data = &sc->rx_data[i]; 607 608 data->sc = sc; 609 610 data->xfer = usbd_alloc_xfer(sc->sc_udev); 611 if (data->xfer == NULL) { 612 printf("%s: could not allocate rx xfer\n", 613 device_xname(sc->sc_dev)); 614 error = ENOMEM; 615 goto fail; 616 } 617 618 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 619 printf("%s: could not allocate rx buffer\n", 620 device_xname(sc->sc_dev)); 621 error = ENOMEM; 622 goto fail; 623 } 624 625 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 626 if (data->m == NULL) { 627 printf("%s: could not allocate rx mbuf\n", 628 device_xname(sc->sc_dev)); 629 error = ENOMEM; 630 goto fail; 631 } 632 633 MCLGET(data->m, M_DONTWAIT); 634 if (!(data->m->m_flags & M_EXT)) { 635 printf("%s: could not allocate rx mbuf cluster\n", 636 device_xname(sc->sc_dev)); 637 error = ENOMEM; 638 goto fail; 639 } 640 641 data->buf = mtod(data->m, uint8_t *); 642 } 643 644 return 0; 645 646 fail: rum_free_rx_list(sc); 647 return error; 648 } 649 650 static void 651 rum_free_rx_list(struct rum_softc *sc) 652 { 653 struct rum_rx_data *data; 654 int i; 655 656 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 657 data = &sc->rx_data[i]; 658 659 if (data->xfer != NULL) { 660 usbd_free_xfer(data->xfer); 661 data->xfer = NULL; 662 } 663 664 if (data->m != NULL) { 665 m_freem(data->m); 666 data->m = NULL; 667 } 668 } 669 } 670 671 static int 672 rum_media_change(struct ifnet *ifp) 673 { 674 int error; 675 676 error = ieee80211_media_change(ifp); 677 if (error != ENETRESET) 678 return error; 679 680 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 681 rum_init(ifp); 682 683 return 0; 684 } 685 686 /* 687 * This function is called periodically (every 200ms) during scanning to 688 * switch from one channel to another. 689 */ 690 static void 691 rum_next_scan(void *arg) 692 { 693 struct rum_softc *sc = arg; 694 struct ieee80211com *ic = &sc->sc_ic; 695 int s; 696 697 s = splnet(); 698 if (ic->ic_state == IEEE80211_S_SCAN) 699 ieee80211_next_scan(ic); 700 splx(s); 701 } 702 703 static void 704 rum_task(void *arg) 705 { 706 struct rum_softc *sc = arg; 707 struct ieee80211com *ic = &sc->sc_ic; 708 enum ieee80211_state ostate; 709 struct ieee80211_node *ni; 710 uint32_t tmp; 711 712 ostate = ic->ic_state; 713 714 switch (sc->sc_state) { 715 case IEEE80211_S_INIT: 716 if (ostate == IEEE80211_S_RUN) { 717 /* abort TSF synchronization */ 718 tmp = rum_read(sc, RT2573_TXRX_CSR9); 719 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 720 } 721 break; 722 723 case IEEE80211_S_SCAN: 724 rum_set_chan(sc, ic->ic_curchan); 725 callout_reset(&sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 726 break; 727 728 case IEEE80211_S_AUTH: 729 rum_set_chan(sc, ic->ic_curchan); 730 break; 731 732 case IEEE80211_S_ASSOC: 733 rum_set_chan(sc, ic->ic_curchan); 734 break; 735 736 case IEEE80211_S_RUN: 737 rum_set_chan(sc, ic->ic_curchan); 738 739 ni = ic->ic_bss; 740 741 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 742 rum_update_slot(sc); 743 rum_enable_mrr(sc); 744 rum_set_txpreamble(sc); 745 rum_set_basicrates(sc); 746 rum_set_bssid(sc, ni->ni_bssid); 747 } 748 749 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 750 ic->ic_opmode == IEEE80211_M_IBSS) 751 rum_prepare_beacon(sc); 752 753 if (ic->ic_opmode != IEEE80211_M_MONITOR) 754 rum_enable_tsf_sync(sc); 755 756 if (ic->ic_opmode == IEEE80211_M_STA) { 757 /* fake a join to init the tx rate */ 758 rum_newassoc(ic->ic_bss, 1); 759 760 /* enable automatic rate adaptation in STA mode */ 761 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 762 rum_amrr_start(sc, ni); 763 } 764 765 break; 766 } 767 768 sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); 769 } 770 771 static int 772 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 773 { 774 struct rum_softc *sc = ic->ic_ifp->if_softc; 775 776 usb_rem_task(sc->sc_udev, &sc->sc_task); 777 callout_stop(&sc->sc_scan_ch); 778 callout_stop(&sc->sc_amrr_ch); 779 780 /* do it in a process context */ 781 sc->sc_state = nstate; 782 sc->sc_arg = arg; 783 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 784 785 return 0; 786 } 787 788 /* quickly determine if a given rate is CCK or OFDM */ 789 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 790 791 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 792 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 793 794 static void 795 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 796 { 797 struct rum_tx_data *data = priv; 798 struct rum_softc *sc = data->sc; 799 struct ifnet *ifp = &sc->sc_if; 800 int s; 801 802 if (status != USBD_NORMAL_COMPLETION) { 803 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 804 return; 805 806 printf("%s: could not transmit buffer: %s\n", 807 device_xname(sc->sc_dev), usbd_errstr(status)); 808 809 if (status == USBD_STALLED) 810 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 811 812 ifp->if_oerrors++; 813 return; 814 } 815 816 s = splnet(); 817 818 ieee80211_free_node(data->ni); 819 data->ni = NULL; 820 821 sc->tx_queued--; 822 ifp->if_opackets++; 823 824 DPRINTFN(10, ("tx done\n")); 825 826 sc->sc_tx_timer = 0; 827 ifp->if_flags &= ~IFF_OACTIVE; 828 rum_start(ifp); 829 830 splx(s); 831 } 832 833 static void 834 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 835 { 836 struct rum_rx_data *data = priv; 837 struct rum_softc *sc = data->sc; 838 struct ieee80211com *ic = &sc->sc_ic; 839 struct ifnet *ifp = &sc->sc_if; 840 struct rum_rx_desc *desc; 841 struct ieee80211_frame *wh; 842 struct ieee80211_node *ni; 843 struct mbuf *mnew, *m; 844 int s, len; 845 846 if (status != USBD_NORMAL_COMPLETION) { 847 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 848 return; 849 850 if (status == USBD_STALLED) 851 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 852 goto skip; 853 } 854 855 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 856 857 if (len < (int)(RT2573_RX_DESC_SIZE + 858 sizeof(struct ieee80211_frame_min))) { 859 DPRINTF(("%s: xfer too short %d\n", device_xname(sc->sc_dev), 860 len)); 861 ifp->if_ierrors++; 862 goto skip; 863 } 864 865 desc = (struct rum_rx_desc *)data->buf; 866 867 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 868 /* 869 * This should not happen since we did not request to receive 870 * those frames when we filled RT2573_TXRX_CSR0. 871 */ 872 DPRINTFN(5, ("CRC error\n")); 873 ifp->if_ierrors++; 874 goto skip; 875 } 876 877 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 878 if (mnew == NULL) { 879 printf("%s: could not allocate rx mbuf\n", 880 device_xname(sc->sc_dev)); 881 ifp->if_ierrors++; 882 goto skip; 883 } 884 885 MCLGET(mnew, M_DONTWAIT); 886 if (!(mnew->m_flags & M_EXT)) { 887 printf("%s: could not allocate rx mbuf cluster\n", 888 device_xname(sc->sc_dev)); 889 m_freem(mnew); 890 ifp->if_ierrors++; 891 goto skip; 892 } 893 894 m = data->m; 895 data->m = mnew; 896 data->buf = mtod(data->m, uint8_t *); 897 898 /* finalize mbuf */ 899 m->m_pkthdr.rcvif = ifp; 900 m->m_data = (void *)(desc + 1); 901 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 902 903 s = splnet(); 904 905 if (sc->sc_drvbpf != NULL) { 906 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 907 908 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 909 tap->wr_rate = rum_rxrate(desc); 910 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 911 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 912 tap->wr_antenna = sc->rx_ant; 913 tap->wr_antsignal = desc->rssi; 914 915 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 916 } 917 918 wh = mtod(m, struct ieee80211_frame *); 919 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 920 921 /* send the frame to the 802.11 layer */ 922 ieee80211_input(ic, m, ni, desc->rssi, 0); 923 924 /* node is no longer needed */ 925 ieee80211_free_node(ni); 926 927 splx(s); 928 929 DPRINTFN(15, ("rx done\n")); 930 931 skip: /* setup a new transfer */ 932 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 933 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 934 usbd_transfer(xfer); 935 } 936 937 /* 938 * This function is only used by the Rx radiotap code. It returns the rate at 939 * which a given frame was received. 940 */ 941 static uint8_t 942 rum_rxrate(const struct rum_rx_desc *desc) 943 { 944 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 945 /* reverse function of rum_plcp_signal */ 946 switch (desc->rate) { 947 case 0xb: return 12; 948 case 0xf: return 18; 949 case 0xa: return 24; 950 case 0xe: return 36; 951 case 0x9: return 48; 952 case 0xd: return 72; 953 case 0x8: return 96; 954 case 0xc: return 108; 955 } 956 } else { 957 if (desc->rate == 10) 958 return 2; 959 if (desc->rate == 20) 960 return 4; 961 if (desc->rate == 55) 962 return 11; 963 if (desc->rate == 110) 964 return 22; 965 } 966 return 2; /* should not get there */ 967 } 968 969 /* 970 * Return the expected ack rate for a frame transmitted at rate `rate'. 971 * XXX: this should depend on the destination node basic rate set. 972 */ 973 static int 974 rum_ack_rate(struct ieee80211com *ic, int rate) 975 { 976 switch (rate) { 977 /* CCK rates */ 978 case 2: 979 return 2; 980 case 4: 981 case 11: 982 case 22: 983 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 984 985 /* OFDM rates */ 986 case 12: 987 case 18: 988 return 12; 989 case 24: 990 case 36: 991 return 24; 992 case 48: 993 case 72: 994 case 96: 995 case 108: 996 return 48; 997 } 998 999 /* default to 1Mbps */ 1000 return 2; 1001 } 1002 1003 /* 1004 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 1005 * The function automatically determines the operating mode depending on the 1006 * given rate. `flags' indicates whether short preamble is in use or not. 1007 */ 1008 static uint16_t 1009 rum_txtime(int len, int rate, uint32_t flags) 1010 { 1011 uint16_t txtime; 1012 1013 if (RUM_RATE_IS_OFDM(rate)) { 1014 /* IEEE Std 802.11a-1999, pp. 37 */ 1015 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 1016 txtime = 16 + 4 + 4 * txtime + 6; 1017 } else { 1018 /* IEEE Std 802.11b-1999, pp. 28 */ 1019 txtime = (16 * len + rate - 1) / rate; 1020 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1021 txtime += 72 + 24; 1022 else 1023 txtime += 144 + 48; 1024 } 1025 return txtime; 1026 } 1027 1028 static uint8_t 1029 rum_plcp_signal(int rate) 1030 { 1031 switch (rate) { 1032 /* CCK rates (returned values are device-dependent) */ 1033 case 2: return 0x0; 1034 case 4: return 0x1; 1035 case 11: return 0x2; 1036 case 22: return 0x3; 1037 1038 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1039 case 12: return 0xb; 1040 case 18: return 0xf; 1041 case 24: return 0xa; 1042 case 36: return 0xe; 1043 case 48: return 0x9; 1044 case 72: return 0xd; 1045 case 96: return 0x8; 1046 case 108: return 0xc; 1047 1048 /* unsupported rates (should not get there) */ 1049 default: return 0xff; 1050 } 1051 } 1052 1053 static void 1054 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1055 uint32_t flags, uint16_t xflags, int len, int rate) 1056 { 1057 struct ieee80211com *ic = &sc->sc_ic; 1058 uint16_t plcp_length; 1059 int remainder; 1060 1061 desc->flags = htole32(flags); 1062 desc->flags |= htole32(RT2573_TX_VALID); 1063 desc->flags |= htole32(len << 16); 1064 1065 desc->xflags = htole16(xflags); 1066 1067 desc->wme = htole16( 1068 RT2573_QID(0) | 1069 RT2573_AIFSN(2) | 1070 RT2573_LOGCWMIN(4) | 1071 RT2573_LOGCWMAX(10)); 1072 1073 /* setup PLCP fields */ 1074 desc->plcp_signal = rum_plcp_signal(rate); 1075 desc->plcp_service = 4; 1076 1077 len += IEEE80211_CRC_LEN; 1078 if (RUM_RATE_IS_OFDM(rate)) { 1079 desc->flags |= htole32(RT2573_TX_OFDM); 1080 1081 plcp_length = len & 0xfff; 1082 desc->plcp_length_hi = plcp_length >> 6; 1083 desc->plcp_length_lo = plcp_length & 0x3f; 1084 } else { 1085 plcp_length = (16 * len + rate - 1) / rate; 1086 if (rate == 22) { 1087 remainder = (16 * len) % 22; 1088 if (remainder != 0 && remainder < 7) 1089 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1090 } 1091 desc->plcp_length_hi = plcp_length >> 8; 1092 desc->plcp_length_lo = plcp_length & 0xff; 1093 1094 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1095 desc->plcp_signal |= 0x08; 1096 } 1097 } 1098 1099 #define RUM_TX_TIMEOUT 5000 1100 1101 static int 1102 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1103 { 1104 struct ieee80211com *ic = &sc->sc_ic; 1105 struct rum_tx_desc *desc; 1106 struct rum_tx_data *data; 1107 struct ieee80211_frame *wh; 1108 struct ieee80211_key *k; 1109 uint32_t flags = 0; 1110 uint16_t dur; 1111 usbd_status error; 1112 int rate, xferlen, pktlen, needrts = 0, needcts = 0; 1113 1114 wh = mtod(m0, struct ieee80211_frame *); 1115 1116 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1117 k = ieee80211_crypto_encap(ic, ni, m0); 1118 if (k == NULL) { 1119 m_freem(m0); 1120 return ENOBUFS; 1121 } 1122 1123 /* packet header may have moved, reset our local pointer */ 1124 wh = mtod(m0, struct ieee80211_frame *); 1125 } 1126 1127 /* compute actual packet length (including CRC and crypto overhead) */ 1128 pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN; 1129 1130 /* pickup a rate */ 1131 if (IEEE80211_IS_MULTICAST(wh->i_addr1) || 1132 ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1133 IEEE80211_FC0_TYPE_MGT)) { 1134 /* mgmt/multicast frames are sent at the lowest avail. rate */ 1135 rate = ni->ni_rates.rs_rates[0]; 1136 } else if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 1137 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1138 } else 1139 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1140 if (rate == 0) 1141 rate = 2; /* XXX should not happen */ 1142 rate &= IEEE80211_RATE_VAL; 1143 1144 /* check if RTS/CTS or CTS-to-self protection must be used */ 1145 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1146 /* multicast frames are not sent at OFDM rates in 802.11b/g */ 1147 if (pktlen > ic->ic_rtsthreshold) { 1148 needrts = 1; /* RTS/CTS based on frame length */ 1149 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1150 RUM_RATE_IS_OFDM(rate)) { 1151 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 1152 needcts = 1; /* CTS-to-self */ 1153 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 1154 needrts = 1; /* RTS/CTS */ 1155 } 1156 } 1157 if (needrts || needcts) { 1158 struct mbuf *mprot; 1159 int protrate, ackrate; 1160 1161 protrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1162 ackrate = rum_ack_rate(ic, rate); 1163 1164 dur = rum_txtime(pktlen, rate, ic->ic_flags) + 1165 rum_txtime(RUM_ACK_SIZE, ackrate, ic->ic_flags) + 1166 2 * sc->sifs; 1167 if (needrts) { 1168 dur += rum_txtime(RUM_CTS_SIZE, rum_ack_rate(ic, 1169 protrate), ic->ic_flags) + sc->sifs; 1170 mprot = ieee80211_get_rts(ic, wh, dur); 1171 } else { 1172 mprot = ieee80211_get_cts_to_self(ic, dur); 1173 } 1174 if (mprot == NULL) { 1175 aprint_error_dev(sc->sc_dev, 1176 "couldn't allocate protection frame\n"); 1177 m_freem(m0); 1178 return ENOBUFS; 1179 } 1180 1181 data = &sc->tx_data[sc->tx_cur]; 1182 desc = (struct rum_tx_desc *)data->buf; 1183 1184 /* avoid multiple free() of the same node for each fragment */ 1185 data->ni = ieee80211_ref_node(ni); 1186 1187 m_copydata(mprot, 0, mprot->m_pkthdr.len, 1188 data->buf + RT2573_TX_DESC_SIZE); 1189 rum_setup_tx_desc(sc, desc, 1190 (needrts ? RT2573_TX_NEED_ACK : 0) | RT2573_TX_MORE_FRAG, 1191 0, mprot->m_pkthdr.len, protrate); 1192 1193 /* no roundup necessary here */ 1194 xferlen = RT2573_TX_DESC_SIZE + mprot->m_pkthdr.len; 1195 1196 /* XXX may want to pass the protection frame to BPF */ 1197 1198 /* mbuf is no longer needed */ 1199 m_freem(mprot); 1200 1201 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, 1202 xferlen, USBD_FORCE_SHORT_XFER | USBD_NO_COPY, 1203 RUM_TX_TIMEOUT, rum_txeof); 1204 error = usbd_transfer(data->xfer); 1205 if (error != USBD_NORMAL_COMPLETION && 1206 error != USBD_IN_PROGRESS) { 1207 m_freem(m0); 1208 return error; 1209 } 1210 1211 sc->tx_queued++; 1212 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1213 1214 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1215 } 1216 1217 data = &sc->tx_data[sc->tx_cur]; 1218 desc = (struct rum_tx_desc *)data->buf; 1219 1220 data->ni = ni; 1221 1222 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1223 flags |= RT2573_TX_NEED_ACK; 1224 1225 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1226 ic->ic_flags) + sc->sifs; 1227 *(uint16_t *)wh->i_dur = htole16(dur); 1228 1229 /* tell hardware to set timestamp in probe responses */ 1230 if ((wh->i_fc[0] & 1231 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1232 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1233 flags |= RT2573_TX_TIMESTAMP; 1234 } 1235 1236 if (sc->sc_drvbpf != NULL) { 1237 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1238 1239 tap->wt_flags = 0; 1240 tap->wt_rate = rate; 1241 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1242 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1243 tap->wt_antenna = sc->tx_ant; 1244 1245 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1246 } 1247 1248 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1249 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1250 1251 /* align end on a 4-bytes boundary */ 1252 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1253 1254 /* 1255 * No space left in the last URB to store the extra 4 bytes, force 1256 * sending of another URB. 1257 */ 1258 if ((xferlen % 64) == 0) 1259 xferlen += 4; 1260 1261 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1262 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1263 rate, xferlen)); 1264 1265 /* mbuf is no longer needed */ 1266 m_freem(m0); 1267 1268 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1269 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1270 error = usbd_transfer(data->xfer); 1271 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1272 return error; 1273 1274 sc->tx_queued++; 1275 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1276 1277 return 0; 1278 } 1279 1280 static void 1281 rum_start(struct ifnet *ifp) 1282 { 1283 struct rum_softc *sc = ifp->if_softc; 1284 struct ieee80211com *ic = &sc->sc_ic; 1285 struct ether_header *eh; 1286 struct ieee80211_node *ni; 1287 struct mbuf *m0; 1288 1289 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1290 return; 1291 1292 for (;;) { 1293 IF_POLL(&ic->ic_mgtq, m0); 1294 if (m0 != NULL) { 1295 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1296 ifp->if_flags |= IFF_OACTIVE; 1297 break; 1298 } 1299 IF_DEQUEUE(&ic->ic_mgtq, m0); 1300 1301 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1302 m0->m_pkthdr.rcvif = NULL; 1303 bpf_mtap3(ic->ic_rawbpf, m0); 1304 if (rum_tx_data(sc, m0, ni) != 0) 1305 break; 1306 1307 } else { 1308 if (ic->ic_state != IEEE80211_S_RUN) 1309 break; 1310 IFQ_POLL(&ifp->if_snd, m0); 1311 if (m0 == NULL) 1312 break; 1313 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1314 ifp->if_flags |= IFF_OACTIVE; 1315 break; 1316 } 1317 IFQ_DEQUEUE(&ifp->if_snd, m0); 1318 if (m0->m_len < (int)sizeof(struct ether_header) && 1319 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1320 continue; 1321 1322 eh = mtod(m0, struct ether_header *); 1323 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1324 if (ni == NULL) { 1325 m_freem(m0); 1326 continue; 1327 } 1328 bpf_mtap(ifp, m0); 1329 m0 = ieee80211_encap(ic, m0, ni); 1330 if (m0 == NULL) { 1331 ieee80211_free_node(ni); 1332 continue; 1333 } 1334 bpf_mtap3(ic->ic_rawbpf, m0); 1335 if (rum_tx_data(sc, m0, ni) != 0) { 1336 ieee80211_free_node(ni); 1337 ifp->if_oerrors++; 1338 break; 1339 } 1340 } 1341 1342 sc->sc_tx_timer = 5; 1343 ifp->if_timer = 1; 1344 } 1345 } 1346 1347 static void 1348 rum_watchdog(struct ifnet *ifp) 1349 { 1350 struct rum_softc *sc = ifp->if_softc; 1351 struct ieee80211com *ic = &sc->sc_ic; 1352 1353 ifp->if_timer = 0; 1354 1355 if (sc->sc_tx_timer > 0) { 1356 if (--sc->sc_tx_timer == 0) { 1357 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1358 /*rum_init(ifp); XXX needs a process context! */ 1359 ifp->if_oerrors++; 1360 return; 1361 } 1362 ifp->if_timer = 1; 1363 } 1364 1365 ieee80211_watchdog(ic); 1366 } 1367 1368 static int 1369 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1370 { 1371 #define IS_RUNNING(ifp) \ 1372 (((ifp)->if_flags & IFF_UP) && ((ifp)->if_flags & IFF_RUNNING)) 1373 1374 struct rum_softc *sc = ifp->if_softc; 1375 struct ieee80211com *ic = &sc->sc_ic; 1376 int s, error = 0; 1377 1378 s = splnet(); 1379 1380 switch (cmd) { 1381 case SIOCSIFFLAGS: 1382 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1383 break; 1384 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1385 case IFF_UP|IFF_RUNNING: 1386 rum_update_promisc(sc); 1387 break; 1388 case IFF_UP: 1389 rum_init(ifp); 1390 break; 1391 case IFF_RUNNING: 1392 rum_stop(ifp, 1); 1393 break; 1394 case 0: 1395 break; 1396 } 1397 break; 1398 1399 case SIOCADDMULTI: 1400 case SIOCDELMULTI: 1401 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1402 error = 0; 1403 } 1404 break; 1405 1406 default: 1407 error = ieee80211_ioctl(ic, cmd, data); 1408 } 1409 1410 if (error == ENETRESET) { 1411 if (IS_RUNNING(ifp) && 1412 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1413 rum_init(ifp); 1414 error = 0; 1415 } 1416 1417 splx(s); 1418 1419 return error; 1420 #undef IS_RUNNING 1421 } 1422 1423 static void 1424 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1425 { 1426 usb_device_request_t req; 1427 usbd_status error; 1428 1429 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1430 req.bRequest = RT2573_READ_EEPROM; 1431 USETW(req.wValue, 0); 1432 USETW(req.wIndex, addr); 1433 USETW(req.wLength, len); 1434 1435 error = usbd_do_request(sc->sc_udev, &req, buf); 1436 if (error != 0) { 1437 printf("%s: could not read EEPROM: %s\n", 1438 device_xname(sc->sc_dev), usbd_errstr(error)); 1439 } 1440 } 1441 1442 static uint32_t 1443 rum_read(struct rum_softc *sc, uint16_t reg) 1444 { 1445 uint32_t val; 1446 1447 rum_read_multi(sc, reg, &val, sizeof val); 1448 1449 return le32toh(val); 1450 } 1451 1452 static void 1453 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1454 { 1455 usb_device_request_t req; 1456 usbd_status error; 1457 1458 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1459 req.bRequest = RT2573_READ_MULTI_MAC; 1460 USETW(req.wValue, 0); 1461 USETW(req.wIndex, reg); 1462 USETW(req.wLength, len); 1463 1464 error = usbd_do_request(sc->sc_udev, &req, buf); 1465 if (error != 0) { 1466 printf("%s: could not multi read MAC register: %s\n", 1467 device_xname(sc->sc_dev), usbd_errstr(error)); 1468 } 1469 } 1470 1471 static void 1472 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1473 { 1474 uint32_t tmp = htole32(val); 1475 1476 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1477 } 1478 1479 static void 1480 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1481 { 1482 usb_device_request_t req; 1483 usbd_status error; 1484 1485 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1486 req.bRequest = RT2573_WRITE_MULTI_MAC; 1487 USETW(req.wValue, 0); 1488 USETW(req.wIndex, reg); 1489 USETW(req.wLength, len); 1490 1491 error = usbd_do_request(sc->sc_udev, &req, buf); 1492 if (error != 0) { 1493 printf("%s: could not multi write MAC register: %s\n", 1494 device_xname(sc->sc_dev), usbd_errstr(error)); 1495 } 1496 } 1497 1498 static void 1499 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1500 { 1501 uint32_t tmp; 1502 int ntries; 1503 1504 for (ntries = 0; ntries < 5; ntries++) { 1505 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1506 break; 1507 } 1508 if (ntries == 5) { 1509 printf("%s: could not write to BBP\n", device_xname(sc->sc_dev)); 1510 return; 1511 } 1512 1513 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1514 rum_write(sc, RT2573_PHY_CSR3, tmp); 1515 } 1516 1517 static uint8_t 1518 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1519 { 1520 uint32_t val; 1521 int ntries; 1522 1523 for (ntries = 0; ntries < 5; ntries++) { 1524 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1525 break; 1526 } 1527 if (ntries == 5) { 1528 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1529 return 0; 1530 } 1531 1532 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1533 rum_write(sc, RT2573_PHY_CSR3, val); 1534 1535 for (ntries = 0; ntries < 100; ntries++) { 1536 val = rum_read(sc, RT2573_PHY_CSR3); 1537 if (!(val & RT2573_BBP_BUSY)) 1538 return val & 0xff; 1539 DELAY(1); 1540 } 1541 1542 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1543 return 0; 1544 } 1545 1546 static void 1547 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1548 { 1549 uint32_t tmp; 1550 int ntries; 1551 1552 for (ntries = 0; ntries < 5; ntries++) { 1553 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1554 break; 1555 } 1556 if (ntries == 5) { 1557 printf("%s: could not write to RF\n", device_xname(sc->sc_dev)); 1558 return; 1559 } 1560 1561 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1562 (reg & 3); 1563 rum_write(sc, RT2573_PHY_CSR4, tmp); 1564 1565 /* remember last written value in sc */ 1566 sc->rf_regs[reg] = val; 1567 1568 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1569 } 1570 1571 static void 1572 rum_select_antenna(struct rum_softc *sc) 1573 { 1574 uint8_t bbp4, bbp77; 1575 uint32_t tmp; 1576 1577 bbp4 = rum_bbp_read(sc, 4); 1578 bbp77 = rum_bbp_read(sc, 77); 1579 1580 /* TBD */ 1581 1582 /* make sure Rx is disabled before switching antenna */ 1583 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1584 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1585 1586 rum_bbp_write(sc, 4, bbp4); 1587 rum_bbp_write(sc, 77, bbp77); 1588 1589 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1590 } 1591 1592 /* 1593 * Enable multi-rate retries for frames sent at OFDM rates. 1594 * In 802.11b/g mode, allow fallback to CCK rates. 1595 */ 1596 static void 1597 rum_enable_mrr(struct rum_softc *sc) 1598 { 1599 struct ieee80211com *ic = &sc->sc_ic; 1600 uint32_t tmp; 1601 1602 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1603 1604 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1605 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1606 tmp |= RT2573_MRR_CCK_FALLBACK; 1607 tmp |= RT2573_MRR_ENABLED; 1608 1609 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1610 } 1611 1612 static void 1613 rum_set_txpreamble(struct rum_softc *sc) 1614 { 1615 uint32_t tmp; 1616 1617 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1618 1619 tmp &= ~RT2573_SHORT_PREAMBLE; 1620 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1621 tmp |= RT2573_SHORT_PREAMBLE; 1622 1623 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1624 } 1625 1626 static void 1627 rum_set_basicrates(struct rum_softc *sc) 1628 { 1629 struct ieee80211com *ic = &sc->sc_ic; 1630 1631 /* update basic rate set */ 1632 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1633 /* 11b basic rates: 1, 2Mbps */ 1634 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1635 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1636 /* 11a basic rates: 6, 12, 24Mbps */ 1637 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1638 } else { 1639 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1640 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1641 } 1642 } 1643 1644 /* 1645 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1646 * driver. 1647 */ 1648 static void 1649 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1650 { 1651 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1652 uint32_t tmp; 1653 1654 /* update all BBP registers that depend on the band */ 1655 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1656 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1657 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1658 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1659 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1660 } 1661 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1662 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1663 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1664 } 1665 1666 sc->bbp17 = bbp17; 1667 rum_bbp_write(sc, 17, bbp17); 1668 rum_bbp_write(sc, 96, bbp96); 1669 rum_bbp_write(sc, 104, bbp104); 1670 1671 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1672 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1673 rum_bbp_write(sc, 75, 0x80); 1674 rum_bbp_write(sc, 86, 0x80); 1675 rum_bbp_write(sc, 88, 0x80); 1676 } 1677 1678 rum_bbp_write(sc, 35, bbp35); 1679 rum_bbp_write(sc, 97, bbp97); 1680 rum_bbp_write(sc, 98, bbp98); 1681 1682 tmp = rum_read(sc, RT2573_PHY_CSR0); 1683 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1684 if (IEEE80211_IS_CHAN_2GHZ(c)) 1685 tmp |= RT2573_PA_PE_2GHZ; 1686 else 1687 tmp |= RT2573_PA_PE_5GHZ; 1688 rum_write(sc, RT2573_PHY_CSR0, tmp); 1689 1690 /* 802.11a uses a 16 microseconds short interframe space */ 1691 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1692 } 1693 1694 static void 1695 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1696 { 1697 struct ieee80211com *ic = &sc->sc_ic; 1698 const struct rfprog *rfprog; 1699 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1700 int8_t power; 1701 u_int i, chan; 1702 1703 chan = ieee80211_chan2ieee(ic, c); 1704 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1705 return; 1706 1707 /* select the appropriate RF settings based on what EEPROM says */ 1708 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1709 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1710 1711 /* find the settings for this channel (we know it exists) */ 1712 for (i = 0; rfprog[i].chan != chan; i++); 1713 1714 power = sc->txpow[i]; 1715 if (power < 0) { 1716 bbp94 += power; 1717 power = 0; 1718 } else if (power > 31) { 1719 bbp94 += power - 31; 1720 power = 31; 1721 } 1722 1723 /* 1724 * If we are switching from the 2GHz band to the 5GHz band or 1725 * vice-versa, BBP registers need to be reprogrammed. 1726 */ 1727 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1728 rum_select_band(sc, c); 1729 rum_select_antenna(sc); 1730 } 1731 ic->ic_curchan = c; 1732 1733 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1734 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1735 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1736 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1737 1738 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1739 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1740 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1741 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1742 1743 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1744 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1745 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1746 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1747 1748 DELAY(10); 1749 1750 /* enable smart mode for MIMO-capable RFs */ 1751 bbp3 = rum_bbp_read(sc, 3); 1752 1753 bbp3 &= ~RT2573_SMART_MODE; 1754 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1755 bbp3 |= RT2573_SMART_MODE; 1756 1757 rum_bbp_write(sc, 3, bbp3); 1758 1759 if (bbp94 != RT2573_BBPR94_DEFAULT) 1760 rum_bbp_write(sc, 94, bbp94); 1761 } 1762 1763 /* 1764 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1765 * and HostAP operating modes. 1766 */ 1767 static void 1768 rum_enable_tsf_sync(struct rum_softc *sc) 1769 { 1770 struct ieee80211com *ic = &sc->sc_ic; 1771 uint32_t tmp; 1772 1773 if (ic->ic_opmode != IEEE80211_M_STA) { 1774 /* 1775 * Change default 16ms TBTT adjustment to 8ms. 1776 * Must be done before enabling beacon generation. 1777 */ 1778 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1779 } 1780 1781 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1782 1783 /* set beacon interval (in 1/16ms unit) */ 1784 tmp |= ic->ic_bss->ni_intval * 16; 1785 1786 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1787 if (ic->ic_opmode == IEEE80211_M_STA) 1788 tmp |= RT2573_TSF_MODE(1); 1789 else 1790 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1791 1792 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1793 } 1794 1795 static void 1796 rum_update_slot(struct rum_softc *sc) 1797 { 1798 struct ieee80211com *ic = &sc->sc_ic; 1799 uint8_t slottime; 1800 uint32_t tmp; 1801 1802 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1803 1804 tmp = rum_read(sc, RT2573_MAC_CSR9); 1805 tmp = (tmp & ~0xff) | slottime; 1806 rum_write(sc, RT2573_MAC_CSR9, tmp); 1807 1808 DPRINTF(("setting slot time to %uus\n", slottime)); 1809 } 1810 1811 static void 1812 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1813 { 1814 uint32_t tmp; 1815 1816 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1817 rum_write(sc, RT2573_MAC_CSR4, tmp); 1818 1819 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1820 rum_write(sc, RT2573_MAC_CSR5, tmp); 1821 } 1822 1823 static void 1824 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1825 { 1826 uint32_t tmp; 1827 1828 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1829 rum_write(sc, RT2573_MAC_CSR2, tmp); 1830 1831 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1832 rum_write(sc, RT2573_MAC_CSR3, tmp); 1833 } 1834 1835 static void 1836 rum_update_promisc(struct rum_softc *sc) 1837 { 1838 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1839 uint32_t tmp; 1840 1841 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1842 1843 tmp &= ~RT2573_DROP_NOT_TO_ME; 1844 if (!(ifp->if_flags & IFF_PROMISC)) 1845 tmp |= RT2573_DROP_NOT_TO_ME; 1846 1847 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1848 1849 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1850 "entering" : "leaving")); 1851 } 1852 1853 static const char * 1854 rum_get_rf(int rev) 1855 { 1856 switch (rev) { 1857 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1858 case RT2573_RF_2528: return "RT2528"; 1859 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1860 case RT2573_RF_5226: return "RT5226"; 1861 default: return "unknown"; 1862 } 1863 } 1864 1865 static void 1866 rum_read_eeprom(struct rum_softc *sc) 1867 { 1868 struct ieee80211com *ic = &sc->sc_ic; 1869 uint16_t val; 1870 #ifdef RUM_DEBUG 1871 int i; 1872 #endif 1873 1874 /* read MAC/BBP type */ 1875 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1876 sc->macbbp_rev = le16toh(val); 1877 1878 /* read MAC address */ 1879 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1880 1881 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1882 val = le16toh(val); 1883 sc->rf_rev = (val >> 11) & 0x1f; 1884 sc->hw_radio = (val >> 10) & 0x1; 1885 sc->rx_ant = (val >> 4) & 0x3; 1886 sc->tx_ant = (val >> 2) & 0x3; 1887 sc->nb_ant = val & 0x3; 1888 1889 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1890 1891 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1892 val = le16toh(val); 1893 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1894 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1895 1896 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1897 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1898 1899 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1900 val = le16toh(val); 1901 if ((val & 0xff) != 0xff) 1902 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1903 1904 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1905 val = le16toh(val); 1906 if ((val & 0xff) != 0xff) 1907 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1908 1909 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1910 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1911 1912 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1913 val = le16toh(val); 1914 if ((val & 0xff) != 0xff) 1915 sc->rffreq = val & 0xff; 1916 1917 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1918 1919 /* read Tx power for all a/b/g channels */ 1920 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1921 /* XXX default Tx power for 802.11a channels */ 1922 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1923 #ifdef RUM_DEBUG 1924 for (i = 0; i < 14; i++) 1925 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1926 #endif 1927 1928 /* read default values for BBP registers */ 1929 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1930 #ifdef RUM_DEBUG 1931 for (i = 0; i < 14; i++) { 1932 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1933 continue; 1934 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1935 sc->bbp_prom[i].val)); 1936 } 1937 #endif 1938 } 1939 1940 static int 1941 rum_bbp_init(struct rum_softc *sc) 1942 { 1943 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1944 unsigned int i, ntries; 1945 uint8_t val; 1946 1947 /* wait for BBP to be ready */ 1948 for (ntries = 0; ntries < 100; ntries++) { 1949 val = rum_bbp_read(sc, 0); 1950 if (val != 0 && val != 0xff) 1951 break; 1952 DELAY(1000); 1953 } 1954 if (ntries == 100) { 1955 printf("%s: timeout waiting for BBP\n", 1956 device_xname(sc->sc_dev)); 1957 return EIO; 1958 } 1959 1960 /* initialize BBP registers to default values */ 1961 for (i = 0; i < N(rum_def_bbp); i++) 1962 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1963 1964 /* write vendor-specific BBP values (from EEPROM) */ 1965 for (i = 0; i < 16; i++) { 1966 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1967 continue; 1968 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1969 } 1970 1971 return 0; 1972 #undef N 1973 } 1974 1975 static int 1976 rum_init(struct ifnet *ifp) 1977 { 1978 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1979 struct rum_softc *sc = ifp->if_softc; 1980 struct ieee80211com *ic = &sc->sc_ic; 1981 struct rum_rx_data *data; 1982 uint32_t tmp; 1983 usbd_status error = 0; 1984 unsigned int i, ntries; 1985 1986 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1987 if (rum_attachhook(sc)) 1988 goto fail; 1989 } 1990 1991 rum_stop(ifp, 0); 1992 1993 /* initialize MAC registers to default values */ 1994 for (i = 0; i < N(rum_def_mac); i++) 1995 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1996 1997 /* set host ready */ 1998 rum_write(sc, RT2573_MAC_CSR1, 3); 1999 rum_write(sc, RT2573_MAC_CSR1, 0); 2000 2001 /* wait for BBP/RF to wakeup */ 2002 for (ntries = 0; ntries < 1000; ntries++) { 2003 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 2004 break; 2005 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 2006 DELAY(1000); 2007 } 2008 if (ntries == 1000) { 2009 printf("%s: timeout waiting for BBP/RF to wakeup\n", 2010 device_xname(sc->sc_dev)); 2011 goto fail; 2012 } 2013 2014 if ((error = rum_bbp_init(sc)) != 0) 2015 goto fail; 2016 2017 /* select default channel */ 2018 rum_select_band(sc, ic->ic_curchan); 2019 rum_select_antenna(sc); 2020 rum_set_chan(sc, ic->ic_curchan); 2021 2022 /* clear STA registers */ 2023 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2024 2025 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2026 rum_set_macaddr(sc, ic->ic_myaddr); 2027 2028 /* initialize ASIC */ 2029 rum_write(sc, RT2573_MAC_CSR1, 4); 2030 2031 /* 2032 * Allocate xfer for AMRR statistics requests. 2033 */ 2034 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 2035 if (sc->amrr_xfer == NULL) { 2036 printf("%s: could not allocate AMRR xfer\n", 2037 device_xname(sc->sc_dev)); 2038 goto fail; 2039 } 2040 2041 /* 2042 * Open Tx and Rx USB bulk pipes. 2043 */ 2044 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2045 &sc->sc_tx_pipeh); 2046 if (error != 0) { 2047 printf("%s: could not open Tx pipe: %s\n", 2048 device_xname(sc->sc_dev), usbd_errstr(error)); 2049 goto fail; 2050 } 2051 2052 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2053 &sc->sc_rx_pipeh); 2054 if (error != 0) { 2055 printf("%s: could not open Rx pipe: %s\n", 2056 device_xname(sc->sc_dev), usbd_errstr(error)); 2057 goto fail; 2058 } 2059 2060 /* 2061 * Allocate Tx and Rx xfer queues. 2062 */ 2063 error = rum_alloc_tx_list(sc); 2064 if (error != 0) { 2065 printf("%s: could not allocate Tx list\n", 2066 device_xname(sc->sc_dev)); 2067 goto fail; 2068 } 2069 2070 error = rum_alloc_rx_list(sc); 2071 if (error != 0) { 2072 printf("%s: could not allocate Rx list\n", 2073 device_xname(sc->sc_dev)); 2074 goto fail; 2075 } 2076 2077 /* 2078 * Start up the receive pipe. 2079 */ 2080 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2081 data = &sc->rx_data[i]; 2082 2083 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2084 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2085 error = usbd_transfer(data->xfer); 2086 if (error != USBD_NORMAL_COMPLETION && 2087 error != USBD_IN_PROGRESS) { 2088 printf("%s: could not queue Rx transfer\n", 2089 device_xname(sc->sc_dev)); 2090 goto fail; 2091 } 2092 } 2093 2094 /* update Rx filter */ 2095 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2096 2097 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2098 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2099 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2100 RT2573_DROP_ACKCTS; 2101 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2102 tmp |= RT2573_DROP_TODS; 2103 if (!(ifp->if_flags & IFF_PROMISC)) 2104 tmp |= RT2573_DROP_NOT_TO_ME; 2105 } 2106 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2107 2108 ifp->if_flags &= ~IFF_OACTIVE; 2109 ifp->if_flags |= IFF_RUNNING; 2110 2111 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2112 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2113 else 2114 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2115 2116 return 0; 2117 2118 fail: rum_stop(ifp, 1); 2119 return error; 2120 #undef N 2121 } 2122 2123 static void 2124 rum_stop(struct ifnet *ifp, int disable) 2125 { 2126 struct rum_softc *sc = ifp->if_softc; 2127 struct ieee80211com *ic = &sc->sc_ic; 2128 uint32_t tmp; 2129 2130 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2131 2132 sc->sc_tx_timer = 0; 2133 ifp->if_timer = 0; 2134 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2135 2136 /* disable Rx */ 2137 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2138 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2139 2140 /* reset ASIC */ 2141 rum_write(sc, RT2573_MAC_CSR1, 3); 2142 rum_write(sc, RT2573_MAC_CSR1, 0); 2143 2144 if (sc->amrr_xfer != NULL) { 2145 usbd_free_xfer(sc->amrr_xfer); 2146 sc->amrr_xfer = NULL; 2147 } 2148 2149 if (sc->sc_rx_pipeh != NULL) { 2150 usbd_abort_pipe(sc->sc_rx_pipeh); 2151 usbd_close_pipe(sc->sc_rx_pipeh); 2152 sc->sc_rx_pipeh = NULL; 2153 } 2154 2155 if (sc->sc_tx_pipeh != NULL) { 2156 usbd_abort_pipe(sc->sc_tx_pipeh); 2157 usbd_close_pipe(sc->sc_tx_pipeh); 2158 sc->sc_tx_pipeh = NULL; 2159 } 2160 2161 rum_free_rx_list(sc); 2162 rum_free_tx_list(sc); 2163 } 2164 2165 static int 2166 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2167 { 2168 usb_device_request_t req; 2169 uint16_t reg = RT2573_MCU_CODE_BASE; 2170 usbd_status error; 2171 2172 /* copy firmware image into NIC */ 2173 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2174 rum_write(sc, reg, UGETDW(ucode)); 2175 2176 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2177 req.bRequest = RT2573_MCU_CNTL; 2178 USETW(req.wValue, RT2573_MCU_RUN); 2179 USETW(req.wIndex, 0); 2180 USETW(req.wLength, 0); 2181 2182 error = usbd_do_request(sc->sc_udev, &req, NULL); 2183 if (error != 0) { 2184 printf("%s: could not run firmware: %s\n", 2185 device_xname(sc->sc_dev), usbd_errstr(error)); 2186 } 2187 return error; 2188 } 2189 2190 static int 2191 rum_prepare_beacon(struct rum_softc *sc) 2192 { 2193 struct ieee80211com *ic = &sc->sc_ic; 2194 struct rum_tx_desc desc; 2195 struct mbuf *m0; 2196 int rate; 2197 2198 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2199 if (m0 == NULL) { 2200 aprint_error_dev(sc->sc_dev, 2201 "could not allocate beacon frame\n"); 2202 return ENOBUFS; 2203 } 2204 2205 /* send beacons at the lowest available rate */ 2206 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2207 2208 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2209 m0->m_pkthdr.len, rate); 2210 2211 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2212 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2213 2214 /* copy beacon header and payload into NIC memory */ 2215 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2216 m0->m_pkthdr.len); 2217 2218 m_freem(m0); 2219 2220 return 0; 2221 } 2222 2223 static void 2224 rum_newassoc(struct ieee80211_node *ni, int isnew) 2225 { 2226 /* start with lowest Tx rate */ 2227 ni->ni_txrate = 0; 2228 } 2229 2230 static void 2231 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2232 { 2233 int i; 2234 2235 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2236 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2237 2238 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2239 2240 /* set rate to some reasonable initial value */ 2241 for (i = ni->ni_rates.rs_nrates - 1; 2242 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2243 i--); 2244 ni->ni_txrate = i; 2245 2246 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2247 } 2248 2249 static void 2250 rum_amrr_timeout(void *arg) 2251 { 2252 struct rum_softc *sc = arg; 2253 usb_device_request_t req; 2254 2255 /* 2256 * Asynchronously read statistic registers (cleared by read). 2257 */ 2258 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2259 req.bRequest = RT2573_READ_MULTI_MAC; 2260 USETW(req.wValue, 0); 2261 USETW(req.wIndex, RT2573_STA_CSR0); 2262 USETW(req.wLength, sizeof sc->sta); 2263 2264 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2265 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2266 rum_amrr_update); 2267 (void)usbd_transfer(sc->amrr_xfer); 2268 } 2269 2270 static void 2271 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2272 usbd_status status) 2273 { 2274 struct rum_softc *sc = (struct rum_softc *)priv; 2275 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2276 2277 if (status != USBD_NORMAL_COMPLETION) { 2278 printf("%s: could not retrieve Tx statistics - cancelling " 2279 "automatic rate control\n", device_xname(sc->sc_dev)); 2280 return; 2281 } 2282 2283 /* count TX retry-fail as Tx errors */ 2284 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2285 2286 sc->amn.amn_retrycnt = 2287 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2288 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2289 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2290 2291 sc->amn.amn_txcnt = 2292 sc->amn.amn_retrycnt + 2293 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2294 2295 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2296 2297 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2298 } 2299 2300 static int 2301 rum_activate(device_t self, enum devact act) 2302 { 2303 switch (act) { 2304 case DVACT_DEACTIVATE: 2305 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2306 return 0; 2307 default: 2308 return 0; 2309 } 2310 } 2311 2312 MODULE(MODULE_CLASS_DRIVER, if_rum, "bpf"); 2313 2314 #ifdef _MODULE 2315 #include "ioconf.c" 2316 #endif 2317 2318 static int 2319 if_rum_modcmd(modcmd_t cmd, void *aux) 2320 { 2321 int error = 0; 2322 2323 switch (cmd) { 2324 case MODULE_CMD_INIT: 2325 #ifdef _MODULE 2326 error = config_init_component(cfdriver_ioconf_rum, 2327 cfattach_ioconf_rum, cfdata_ioconf_rum); 2328 #endif 2329 return error; 2330 case MODULE_CMD_FINI: 2331 #ifdef _MODULE 2332 error = config_fini_component(cfdriver_ioconf_rum, 2333 cfattach_ioconf_rum, cfdata_ioconf_rum); 2334 #endif 2335 return error; 2336 default: 2337 return ENOTTY; 2338 } 2339 } 2340
Indexes created Wed Sep 24 05:09:52 GMT 2025