if_rum.c revision 1.48.6.2
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.48.6.2 2014/12/03 22:33:56 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 1.48.6.2 2014/12/03 22:33:56 skrll Exp $"); 28 29 #include <sys/param.h> 30 #include <sys/sockio.h> 31 #include <sys/sysctl.h> 32 #include <sys/mbuf.h> 33 #include <sys/kernel.h> 34 #include <sys/socket.h> 35 #include <sys/systm.h> 36 #include <sys/module.h> 37 #include <sys/conf.h> 38 #include <sys/device.h> 39 40 #include <sys/bus.h> 41 #include <machine/endian.h> 42 #include <sys/intr.h> 43 44 #include <net/bpf.h> 45 #include <net/if.h> 46 #include <net/if_arp.h> 47 #include <net/if_dl.h> 48 #include <net/if_ether.h> 49 #include <net/if_media.h> 50 #include <net/if_types.h> 51 52 #include <netinet/in.h> 53 #include <netinet/in_systm.h> 54 #include <netinet/in_var.h> 55 #include <netinet/ip.h> 56 57 #include <net80211/ieee80211_netbsd.h> 58 #include <net80211/ieee80211_var.h> 59 #include <net80211/ieee80211_amrr.h> 60 #include <net80211/ieee80211_radiotap.h> 61 62 #include <dev/firmload.h> 63 64 #include <dev/usb/usb.h> 65 #include <dev/usb/usbdi.h> 66 #include <dev/usb/usbdi_util.h> 67 #include <dev/usb/usbdevs.h> 68 69 #include <dev/usb/if_rumreg.h> 70 #include <dev/usb/if_rumvar.h> 71 72 #ifdef RUM_DEBUG 73 #define DPRINTF(x) do { if (rum_debug) printf x; } while (0) 74 #define DPRINTFN(n, x) do { if (rum_debug >= (n)) printf x; } while (0) 75 int rum_debug = 1; 76 #else 77 #define DPRINTF(x) 78 #define DPRINTFN(n, x) 79 #endif 80 81 /* various supported device vendors/products */ 82 static const struct usb_devno rum_devs[] = { 83 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_HWU54DM }, 84 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_2 }, 85 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_3 }, 86 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_4 }, 87 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_WUG2700 }, 88 { USB_VENDOR_AMIT, USB_PRODUCT_AMIT_CGWLUSB2GO }, 89 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_2 }, 90 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_3 }, 91 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 92 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 93 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050C }, 94 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB200 }, 95 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 96 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GR }, 97 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 98 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_RT2573 }, 99 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GL }, 100 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GPX }, 101 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 102 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 103 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 104 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 105 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA110 }, 106 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA111 }, 107 { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7318 }, 108 { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7618 }, 109 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 110 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWI05GS }, 111 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 112 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 113 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254LB }, 114 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254V2AP }, 115 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 116 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_G54HP }, 117 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, 118 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HG }, 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, USB_PRODUCT_RALINK_RT2671 }, 133 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 134 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 135 { USB_VENDOR_SPARKLAN, USB_PRODUCT_SPARKLAN_RT2573 }, 136 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 }, 137 { USB_VENDOR_ZYXEL, USB_PRODUCT_ZYXEL_RT2573 } 138 }; 139 140 static int rum_attachhook(void *); 141 static int rum_alloc_tx_list(struct rum_softc *); 142 static void rum_free_tx_list(struct rum_softc *); 143 static int rum_alloc_rx_list(struct rum_softc *); 144 static void rum_free_rx_list(struct rum_softc *); 145 static int rum_media_change(struct ifnet *); 146 static void rum_next_scan(void *); 147 static void rum_task(void *); 148 static int rum_newstate(struct ieee80211com *, 149 enum ieee80211_state, int); 150 static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 151 usbd_status); 152 static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 153 usbd_status); 154 static uint8_t rum_rxrate(const struct rum_rx_desc *); 155 static int rum_ack_rate(struct ieee80211com *, int); 156 static uint16_t rum_txtime(int, int, uint32_t); 157 static uint8_t rum_plcp_signal(int); 158 static void rum_setup_tx_desc(struct rum_softc *, 159 struct rum_tx_desc *, uint32_t, uint16_t, int, 160 int); 161 static int rum_tx_data(struct rum_softc *, struct mbuf *, 162 struct ieee80211_node *); 163 static void rum_start(struct ifnet *); 164 static void rum_watchdog(struct ifnet *); 165 static int rum_ioctl(struct ifnet *, u_long, void *); 166 static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 167 int); 168 static uint32_t rum_read(struct rum_softc *, uint16_t); 169 static void rum_read_multi(struct rum_softc *, uint16_t, void *, 170 int); 171 static void rum_write(struct rum_softc *, uint16_t, uint32_t); 172 static void rum_write_multi(struct rum_softc *, uint16_t, void *, 173 size_t); 174 static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 175 static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 176 static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 177 static void rum_select_antenna(struct rum_softc *); 178 static void rum_enable_mrr(struct rum_softc *); 179 static void rum_set_txpreamble(struct rum_softc *); 180 static void rum_set_basicrates(struct rum_softc *); 181 static void rum_select_band(struct rum_softc *, 182 struct ieee80211_channel *); 183 static void rum_set_chan(struct rum_softc *, 184 struct ieee80211_channel *); 185 static void rum_enable_tsf_sync(struct rum_softc *); 186 static void rum_update_slot(struct rum_softc *); 187 static void rum_set_bssid(struct rum_softc *, const uint8_t *); 188 static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 189 static void rum_update_promisc(struct rum_softc *); 190 static const char *rum_get_rf(int); 191 static void rum_read_eeprom(struct rum_softc *); 192 static int rum_bbp_init(struct rum_softc *); 193 static int rum_init(struct ifnet *); 194 static void rum_stop(struct ifnet *, int); 195 static int rum_load_microcode(struct rum_softc *, const u_char *, 196 size_t); 197 static int rum_prepare_beacon(struct rum_softc *); 198 static void rum_newassoc(struct ieee80211_node *, int); 199 static void rum_amrr_start(struct rum_softc *, 200 struct ieee80211_node *); 201 static void rum_amrr_timeout(void *); 202 static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 203 usbd_status status); 204 205 /* 206 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 207 */ 208 static const struct ieee80211_rateset rum_rateset_11a = 209 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 210 211 static const struct ieee80211_rateset rum_rateset_11b = 212 { 4, { 2, 4, 11, 22 } }; 213 214 static const struct ieee80211_rateset rum_rateset_11g = 215 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 216 217 static const struct { 218 uint32_t reg; 219 uint32_t val; 220 } rum_def_mac[] = { 221 RT2573_DEF_MAC 222 }; 223 224 static const struct { 225 uint8_t reg; 226 uint8_t val; 227 } rum_def_bbp[] = { 228 RT2573_DEF_BBP 229 }; 230 231 static const struct rfprog { 232 uint8_t chan; 233 uint32_t r1, r2, r3, r4; 234 } rum_rf5226[] = { 235 RT2573_RF5226 236 }, rum_rf5225[] = { 237 RT2573_RF5225 238 }; 239 240 static int rum_match(device_t, cfdata_t, void *); 241 static void rum_attach(device_t, device_t, void *); 242 static int rum_detach(device_t, int); 243 static int rum_activate(device_t, enum devact); 244 extern struct cfdriver rum_cd; 245 CFATTACH_DECL_NEW(rum, sizeof(struct rum_softc), rum_match, rum_attach, 246 rum_detach, rum_activate); 247 248 static int 249 rum_match(device_t parent, cfdata_t match, void *aux) 250 { 251 struct usb_attach_arg *uaa = aux; 252 253 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 254 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 255 } 256 257 static int 258 rum_attachhook(void *xsc) 259 { 260 struct rum_softc *sc = xsc; 261 firmware_handle_t fwh; 262 const char *name = "rum-rt2573"; 263 u_char *ucode; 264 size_t size; 265 int error; 266 267 if ((error = firmware_open("rum", name, &fwh)) != 0) { 268 printf("%s: failed loadfirmware of file %s (error %d)\n", 269 device_xname(sc->sc_dev), name, error); 270 return error; 271 } 272 size = firmware_get_size(fwh); 273 ucode = firmware_malloc(size); 274 if (ucode == NULL) { 275 printf("%s: failed to allocate firmware memory\n", 276 device_xname(sc->sc_dev)); 277 firmware_close(fwh); 278 return ENOMEM; 279 } 280 error = firmware_read(fwh, 0, ucode, size); 281 firmware_close(fwh); 282 if (error != 0) { 283 printf("%s: failed to read firmware (error %d)\n", 284 device_xname(sc->sc_dev), error); 285 firmware_free(ucode, 0); 286 return error; 287 } 288 289 if (rum_load_microcode(sc, ucode, size) != 0) { 290 printf("%s: could not load 8051 microcode\n", 291 device_xname(sc->sc_dev)); 292 firmware_free(ucode, 0); 293 return ENXIO; 294 } 295 296 firmware_free(ucode, 0); 297 sc->sc_flags |= RT2573_FWLOADED; 298 299 return 0; 300 } 301 302 static void 303 rum_attach(device_t parent, device_t self, void *aux) 304 { 305 struct rum_softc *sc = device_private(self); 306 struct usb_attach_arg *uaa = aux; 307 struct ieee80211com *ic = &sc->sc_ic; 308 struct ifnet *ifp = &sc->sc_if; 309 usb_interface_descriptor_t *id; 310 usb_endpoint_descriptor_t *ed; 311 usbd_status error; 312 char *devinfop; 313 int i, ntries; 314 uint32_t tmp; 315 316 sc->sc_dev = self; 317 sc->sc_udev = uaa->device; 318 sc->sc_flags = 0; 319 320 aprint_naive("\n"); 321 aprint_normal("\n"); 322 323 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 324 aprint_normal_dev(self, "%s\n", devinfop); 325 usbd_devinfo_free(devinfop); 326 327 error = usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0); 328 if (error != 0) { 329 aprint_error_dev(self, "failed to set configuration" 330 ", err=%s\n", usbd_errstr(error)); 331 return; 332 } 333 334 /* get the first interface handle */ 335 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 336 &sc->sc_iface); 337 if (error != 0) { 338 aprint_error_dev(self, "could not get interface handle\n"); 339 return; 340 } 341 342 /* 343 * Find endpoints. 344 */ 345 id = usbd_get_interface_descriptor(sc->sc_iface); 346 347 sc->sc_rx_no = sc->sc_tx_no = -1; 348 for (i = 0; i < id->bNumEndpoints; i++) { 349 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 350 if (ed == NULL) { 351 aprint_error_dev(self, 352 "no endpoint descriptor for iface %d\n", i); 353 return; 354 } 355 356 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 357 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 358 sc->sc_rx_no = ed->bEndpointAddress; 359 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 360 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 361 sc->sc_tx_no = ed->bEndpointAddress; 362 } 363 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 364 aprint_error_dev(self, "missing endpoint\n"); 365 return; 366 } 367 368 usb_init_task(&sc->sc_task, rum_task, sc, 0); 369 callout_init(&sc->sc_scan_ch, 0); 370 371 sc->amrr.amrr_min_success_threshold = 1; 372 sc->amrr.amrr_max_success_threshold = 10; 373 callout_init(&sc->sc_amrr_ch, 0); 374 375 /* retrieve RT2573 rev. no */ 376 for (ntries = 0; ntries < 1000; ntries++) { 377 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 378 break; 379 DELAY(1000); 380 } 381 if (ntries == 1000) { 382 aprint_error_dev(self, "timeout waiting for chip to settle\n"); 383 return; 384 } 385 386 /* retrieve MAC address and various other things from EEPROM */ 387 rum_read_eeprom(sc); 388 389 aprint_normal_dev(self, 390 "MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 391 sc->macbbp_rev, tmp, 392 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 393 394 ic->ic_ifp = ifp; 395 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 396 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 397 ic->ic_state = IEEE80211_S_INIT; 398 399 /* set device capabilities */ 400 ic->ic_caps = 401 IEEE80211_C_IBSS | /* IBSS mode supported */ 402 IEEE80211_C_MONITOR | /* monitor mode supported */ 403 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 404 IEEE80211_C_TXPMGT | /* tx power management */ 405 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 406 IEEE80211_C_SHSLOT | /* short slot time supported */ 407 IEEE80211_C_WPA; /* 802.11i */ 408 409 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 410 /* set supported .11a rates */ 411 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 412 413 /* set supported .11a channels */ 414 for (i = 34; i <= 46; i += 4) { 415 ic->ic_channels[i].ic_freq = 416 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 417 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 418 } 419 for (i = 36; i <= 64; i += 4) { 420 ic->ic_channels[i].ic_freq = 421 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 422 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 423 } 424 for (i = 100; i <= 140; i += 4) { 425 ic->ic_channels[i].ic_freq = 426 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 427 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 428 } 429 for (i = 149; i <= 165; i += 4) { 430 ic->ic_channels[i].ic_freq = 431 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 432 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 433 } 434 } 435 436 /* set supported .11b and .11g rates */ 437 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 438 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 439 440 /* set supported .11b and .11g channels (1 through 14) */ 441 for (i = 1; i <= 14; i++) { 442 ic->ic_channels[i].ic_freq = 443 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 444 ic->ic_channels[i].ic_flags = 445 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 446 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 447 } 448 449 ifp->if_softc = sc; 450 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 451 ifp->if_init = rum_init; 452 ifp->if_ioctl = rum_ioctl; 453 ifp->if_start = rum_start; 454 ifp->if_watchdog = rum_watchdog; 455 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 456 IFQ_SET_READY(&ifp->if_snd); 457 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 458 459 if_attach(ifp); 460 ieee80211_ifattach(ic); 461 ic->ic_newassoc = rum_newassoc; 462 463 /* override state transition machine */ 464 sc->sc_newstate = ic->ic_newstate; 465 ic->ic_newstate = rum_newstate; 466 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 467 468 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 469 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 470 &sc->sc_drvbpf); 471 472 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 473 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 474 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 475 476 sc->sc_txtap_len = sizeof sc->sc_txtapu; 477 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 478 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 479 480 ieee80211_announce(ic); 481 482 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 483 sc->sc_dev); 484 485 return; 486 } 487 488 static int 489 rum_detach(device_t self, int flags) 490 { 491 struct rum_softc *sc = device_private(self); 492 struct ieee80211com *ic = &sc->sc_ic; 493 struct ifnet *ifp = &sc->sc_if; 494 int s; 495 496 if (!ifp->if_softc) 497 return 0; 498 499 s = splusb(); 500 501 rum_stop(ifp, 1); 502 usb_rem_task(sc->sc_udev, &sc->sc_task); 503 callout_stop(&sc->sc_scan_ch); 504 callout_stop(&sc->sc_amrr_ch); 505 506 if (sc->amrr_xfer != NULL) { 507 usbd_free_xfer(sc->amrr_xfer); 508 sc->amrr_xfer = NULL; 509 } 510 511 if (sc->sc_rx_pipeh != NULL) { 512 usbd_abort_pipe(sc->sc_rx_pipeh); 513 usbd_close_pipe(sc->sc_rx_pipeh); 514 } 515 516 if (sc->sc_tx_pipeh != NULL) { 517 usbd_abort_pipe(sc->sc_tx_pipeh); 518 usbd_close_pipe(sc->sc_tx_pipeh); 519 } 520 521 bpf_detach(ifp); 522 ieee80211_ifdetach(ic); /* free all nodes */ 523 if_detach(ifp); 524 525 splx(s); 526 527 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 528 529 return 0; 530 } 531 532 static int 533 rum_alloc_tx_list(struct rum_softc *sc) 534 { 535 struct rum_tx_data *data; 536 int i, error; 537 538 sc->tx_cur = sc->tx_queued = 0; 539 540 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 541 data = &sc->tx_data[i]; 542 543 data->sc = sc; 544 545 data->xfer = usbd_alloc_xfer(sc->sc_udev); 546 if (data->xfer == NULL) { 547 printf("%s: could not allocate tx xfer\n", 548 device_xname(sc->sc_dev)); 549 error = ENOMEM; 550 goto fail; 551 } 552 553 data->buf = usbd_alloc_buffer(data->xfer, 554 RT2573_TX_DESC_SIZE + IEEE80211_MAX_LEN); 555 if (data->buf == NULL) { 556 printf("%s: could not allocate tx buffer\n", 557 device_xname(sc->sc_dev)); 558 error = ENOMEM; 559 goto fail; 560 } 561 562 /* clean Tx descriptor */ 563 memset(data->buf, 0, RT2573_TX_DESC_SIZE); 564 } 565 566 return 0; 567 568 fail: rum_free_tx_list(sc); 569 return error; 570 } 571 572 static void 573 rum_free_tx_list(struct rum_softc *sc) 574 { 575 struct rum_tx_data *data; 576 int i; 577 578 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 579 data = &sc->tx_data[i]; 580 581 if (data->xfer != NULL) { 582 usbd_free_xfer(data->xfer); 583 data->xfer = NULL; 584 } 585 586 if (data->ni != NULL) { 587 ieee80211_free_node(data->ni); 588 data->ni = NULL; 589 } 590 } 591 } 592 593 static int 594 rum_alloc_rx_list(struct rum_softc *sc) 595 { 596 struct rum_rx_data *data; 597 int i, error; 598 599 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 600 data = &sc->rx_data[i]; 601 602 data->sc = sc; 603 604 data->xfer = usbd_alloc_xfer(sc->sc_udev); 605 if (data->xfer == NULL) { 606 printf("%s: could not allocate rx xfer\n", 607 device_xname(sc->sc_dev)); 608 error = ENOMEM; 609 goto fail; 610 } 611 612 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 613 printf("%s: could not allocate rx buffer\n", 614 device_xname(sc->sc_dev)); 615 error = ENOMEM; 616 goto fail; 617 } 618 619 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 620 if (data->m == NULL) { 621 printf("%s: could not allocate rx mbuf\n", 622 device_xname(sc->sc_dev)); 623 error = ENOMEM; 624 goto fail; 625 } 626 627 MCLGET(data->m, M_DONTWAIT); 628 if (!(data->m->m_flags & M_EXT)) { 629 printf("%s: could not allocate rx mbuf cluster\n", 630 device_xname(sc->sc_dev)); 631 error = ENOMEM; 632 goto fail; 633 } 634 635 data->buf = mtod(data->m, uint8_t *); 636 } 637 638 return 0; 639 640 fail: rum_free_rx_list(sc); 641 return error; 642 } 643 644 static void 645 rum_free_rx_list(struct rum_softc *sc) 646 { 647 struct rum_rx_data *data; 648 int i; 649 650 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 651 data = &sc->rx_data[i]; 652 653 if (data->xfer != NULL) { 654 usbd_free_xfer(data->xfer); 655 data->xfer = NULL; 656 } 657 658 if (data->m != NULL) { 659 m_freem(data->m); 660 data->m = NULL; 661 } 662 } 663 } 664 665 static int 666 rum_media_change(struct ifnet *ifp) 667 { 668 int error; 669 670 error = ieee80211_media_change(ifp); 671 if (error != ENETRESET) 672 return error; 673 674 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 675 rum_init(ifp); 676 677 return 0; 678 } 679 680 /* 681 * This function is called periodically (every 200ms) during scanning to 682 * switch from one channel to another. 683 */ 684 static void 685 rum_next_scan(void *arg) 686 { 687 struct rum_softc *sc = arg; 688 struct ieee80211com *ic = &sc->sc_ic; 689 int s; 690 691 s = splnet(); 692 if (ic->ic_state == IEEE80211_S_SCAN) 693 ieee80211_next_scan(ic); 694 splx(s); 695 } 696 697 static void 698 rum_task(void *arg) 699 { 700 struct rum_softc *sc = arg; 701 struct ieee80211com *ic = &sc->sc_ic; 702 enum ieee80211_state ostate; 703 struct ieee80211_node *ni; 704 uint32_t tmp; 705 706 ostate = ic->ic_state; 707 708 switch (sc->sc_state) { 709 case IEEE80211_S_INIT: 710 if (ostate == IEEE80211_S_RUN) { 711 /* abort TSF synchronization */ 712 tmp = rum_read(sc, RT2573_TXRX_CSR9); 713 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 714 } 715 break; 716 717 case IEEE80211_S_SCAN: 718 rum_set_chan(sc, ic->ic_curchan); 719 callout_reset(&sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 720 break; 721 722 case IEEE80211_S_AUTH: 723 rum_set_chan(sc, ic->ic_curchan); 724 break; 725 726 case IEEE80211_S_ASSOC: 727 rum_set_chan(sc, ic->ic_curchan); 728 break; 729 730 case IEEE80211_S_RUN: 731 rum_set_chan(sc, ic->ic_curchan); 732 733 ni = ic->ic_bss; 734 735 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 736 rum_update_slot(sc); 737 rum_enable_mrr(sc); 738 rum_set_txpreamble(sc); 739 rum_set_basicrates(sc); 740 rum_set_bssid(sc, ni->ni_bssid); 741 } 742 743 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 744 ic->ic_opmode == IEEE80211_M_IBSS) 745 rum_prepare_beacon(sc); 746 747 if (ic->ic_opmode != IEEE80211_M_MONITOR) 748 rum_enable_tsf_sync(sc); 749 750 if (ic->ic_opmode == IEEE80211_M_STA) { 751 /* fake a join to init the tx rate */ 752 rum_newassoc(ic->ic_bss, 1); 753 754 /* enable automatic rate adaptation in STA mode */ 755 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 756 rum_amrr_start(sc, ni); 757 } 758 759 break; 760 } 761 762 sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); 763 } 764 765 static int 766 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 767 { 768 struct rum_softc *sc = ic->ic_ifp->if_softc; 769 770 usb_rem_task(sc->sc_udev, &sc->sc_task); 771 callout_stop(&sc->sc_scan_ch); 772 callout_stop(&sc->sc_amrr_ch); 773 774 /* do it in a process context */ 775 sc->sc_state = nstate; 776 sc->sc_arg = arg; 777 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 778 779 return 0; 780 } 781 782 /* quickly determine if a given rate is CCK or OFDM */ 783 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 784 785 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 786 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 787 788 static void 789 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 790 { 791 struct rum_tx_data *data = priv; 792 struct rum_softc *sc = data->sc; 793 struct ifnet *ifp = &sc->sc_if; 794 int s; 795 796 if (status != USBD_NORMAL_COMPLETION) { 797 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 798 return; 799 800 printf("%s: could not transmit buffer: %s\n", 801 device_xname(sc->sc_dev), usbd_errstr(status)); 802 803 if (status == USBD_STALLED) 804 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 805 806 ifp->if_oerrors++; 807 return; 808 } 809 810 s = splnet(); 811 812 ieee80211_free_node(data->ni); 813 data->ni = NULL; 814 815 sc->tx_queued--; 816 ifp->if_opackets++; 817 818 DPRINTFN(10, ("tx done\n")); 819 820 sc->sc_tx_timer = 0; 821 ifp->if_flags &= ~IFF_OACTIVE; 822 rum_start(ifp); 823 824 splx(s); 825 } 826 827 static void 828 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 829 { 830 struct rum_rx_data *data = priv; 831 struct rum_softc *sc = data->sc; 832 struct ieee80211com *ic = &sc->sc_ic; 833 struct ifnet *ifp = &sc->sc_if; 834 struct rum_rx_desc *desc; 835 struct ieee80211_frame *wh; 836 struct ieee80211_node *ni; 837 struct mbuf *mnew, *m; 838 int s, len; 839 840 if (status != USBD_NORMAL_COMPLETION) { 841 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 842 return; 843 844 if (status == USBD_STALLED) 845 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 846 goto skip; 847 } 848 849 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 850 851 if (len < (int)(RT2573_RX_DESC_SIZE + 852 sizeof(struct ieee80211_frame_min))) { 853 DPRINTF(("%s: xfer too short %d\n", device_xname(sc->sc_dev), 854 len)); 855 ifp->if_ierrors++; 856 goto skip; 857 } 858 859 desc = (struct rum_rx_desc *)data->buf; 860 861 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 862 /* 863 * This should not happen since we did not request to receive 864 * those frames when we filled RT2573_TXRX_CSR0. 865 */ 866 DPRINTFN(5, ("CRC error\n")); 867 ifp->if_ierrors++; 868 goto skip; 869 } 870 871 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 872 if (mnew == NULL) { 873 printf("%s: could not allocate rx mbuf\n", 874 device_xname(sc->sc_dev)); 875 ifp->if_ierrors++; 876 goto skip; 877 } 878 879 MCLGET(mnew, M_DONTWAIT); 880 if (!(mnew->m_flags & M_EXT)) { 881 printf("%s: could not allocate rx mbuf cluster\n", 882 device_xname(sc->sc_dev)); 883 m_freem(mnew); 884 ifp->if_ierrors++; 885 goto skip; 886 } 887 888 m = data->m; 889 data->m = mnew; 890 data->buf = mtod(data->m, uint8_t *); 891 892 /* finalize mbuf */ 893 m->m_pkthdr.rcvif = ifp; 894 m->m_data = (void *)(desc + 1); 895 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 896 897 s = splnet(); 898 899 if (sc->sc_drvbpf != NULL) { 900 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 901 902 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 903 tap->wr_rate = rum_rxrate(desc); 904 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 905 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 906 tap->wr_antenna = sc->rx_ant; 907 tap->wr_antsignal = desc->rssi; 908 909 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 910 } 911 912 wh = mtod(m, struct ieee80211_frame *); 913 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 914 915 /* send the frame to the 802.11 layer */ 916 ieee80211_input(ic, m, ni, desc->rssi, 0); 917 918 /* node is no longer needed */ 919 ieee80211_free_node(ni); 920 921 splx(s); 922 923 DPRINTFN(15, ("rx done\n")); 924 925 skip: /* setup a new transfer */ 926 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 927 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 928 usbd_transfer(xfer); 929 } 930 931 /* 932 * This function is only used by the Rx radiotap code. It returns the rate at 933 * which a given frame was received. 934 */ 935 static uint8_t 936 rum_rxrate(const struct rum_rx_desc *desc) 937 { 938 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 939 /* reverse function of rum_plcp_signal */ 940 switch (desc->rate) { 941 case 0xb: return 12; 942 case 0xf: return 18; 943 case 0xa: return 24; 944 case 0xe: return 36; 945 case 0x9: return 48; 946 case 0xd: return 72; 947 case 0x8: return 96; 948 case 0xc: return 108; 949 } 950 } else { 951 if (desc->rate == 10) 952 return 2; 953 if (desc->rate == 20) 954 return 4; 955 if (desc->rate == 55) 956 return 11; 957 if (desc->rate == 110) 958 return 22; 959 } 960 return 2; /* should not get there */ 961 } 962 963 /* 964 * Return the expected ack rate for a frame transmitted at rate `rate'. 965 * XXX: this should depend on the destination node basic rate set. 966 */ 967 static int 968 rum_ack_rate(struct ieee80211com *ic, int rate) 969 { 970 switch (rate) { 971 /* CCK rates */ 972 case 2: 973 return 2; 974 case 4: 975 case 11: 976 case 22: 977 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 978 979 /* OFDM rates */ 980 case 12: 981 case 18: 982 return 12; 983 case 24: 984 case 36: 985 return 24; 986 case 48: 987 case 72: 988 case 96: 989 case 108: 990 return 48; 991 } 992 993 /* default to 1Mbps */ 994 return 2; 995 } 996 997 /* 998 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 999 * The function automatically determines the operating mode depending on the 1000 * given rate. `flags' indicates whether short preamble is in use or not. 1001 */ 1002 static uint16_t 1003 rum_txtime(int len, int rate, uint32_t flags) 1004 { 1005 uint16_t txtime; 1006 1007 if (RUM_RATE_IS_OFDM(rate)) { 1008 /* IEEE Std 802.11a-1999, pp. 37 */ 1009 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 1010 txtime = 16 + 4 + 4 * txtime + 6; 1011 } else { 1012 /* IEEE Std 802.11b-1999, pp. 28 */ 1013 txtime = (16 * len + rate - 1) / rate; 1014 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1015 txtime += 72 + 24; 1016 else 1017 txtime += 144 + 48; 1018 } 1019 return txtime; 1020 } 1021 1022 static uint8_t 1023 rum_plcp_signal(int rate) 1024 { 1025 switch (rate) { 1026 /* CCK rates (returned values are device-dependent) */ 1027 case 2: return 0x0; 1028 case 4: return 0x1; 1029 case 11: return 0x2; 1030 case 22: return 0x3; 1031 1032 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1033 case 12: return 0xb; 1034 case 18: return 0xf; 1035 case 24: return 0xa; 1036 case 36: return 0xe; 1037 case 48: return 0x9; 1038 case 72: return 0xd; 1039 case 96: return 0x8; 1040 case 108: return 0xc; 1041 1042 /* unsupported rates (should not get there) */ 1043 default: return 0xff; 1044 } 1045 } 1046 1047 static void 1048 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1049 uint32_t flags, uint16_t xflags, int len, int rate) 1050 { 1051 struct ieee80211com *ic = &sc->sc_ic; 1052 uint16_t plcp_length; 1053 int remainder; 1054 1055 desc->flags = htole32(flags); 1056 desc->flags |= htole32(RT2573_TX_VALID); 1057 desc->flags |= htole32(len << 16); 1058 1059 desc->xflags = htole16(xflags); 1060 1061 desc->wme = htole16( 1062 RT2573_QID(0) | 1063 RT2573_AIFSN(2) | 1064 RT2573_LOGCWMIN(4) | 1065 RT2573_LOGCWMAX(10)); 1066 1067 /* setup PLCP fields */ 1068 desc->plcp_signal = rum_plcp_signal(rate); 1069 desc->plcp_service = 4; 1070 1071 len += IEEE80211_CRC_LEN; 1072 if (RUM_RATE_IS_OFDM(rate)) { 1073 desc->flags |= htole32(RT2573_TX_OFDM); 1074 1075 plcp_length = len & 0xfff; 1076 desc->plcp_length_hi = plcp_length >> 6; 1077 desc->plcp_length_lo = plcp_length & 0x3f; 1078 } else { 1079 plcp_length = (16 * len + rate - 1) / rate; 1080 if (rate == 22) { 1081 remainder = (16 * len) % 22; 1082 if (remainder != 0 && remainder < 7) 1083 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1084 } 1085 desc->plcp_length_hi = plcp_length >> 8; 1086 desc->plcp_length_lo = plcp_length & 0xff; 1087 1088 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1089 desc->plcp_signal |= 0x08; 1090 } 1091 } 1092 1093 #define RUM_TX_TIMEOUT 5000 1094 1095 static int 1096 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1097 { 1098 struct ieee80211com *ic = &sc->sc_ic; 1099 struct rum_tx_desc *desc; 1100 struct rum_tx_data *data; 1101 struct ieee80211_frame *wh; 1102 struct ieee80211_key *k; 1103 uint32_t flags = 0; 1104 uint16_t dur; 1105 usbd_status error; 1106 int rate, xferlen, pktlen, needrts = 0, needcts = 0; 1107 1108 wh = mtod(m0, struct ieee80211_frame *); 1109 1110 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1111 k = ieee80211_crypto_encap(ic, ni, m0); 1112 if (k == NULL) { 1113 m_freem(m0); 1114 return ENOBUFS; 1115 } 1116 1117 /* packet header may have moved, reset our local pointer */ 1118 wh = mtod(m0, struct ieee80211_frame *); 1119 } 1120 1121 /* compute actual packet length (including CRC and crypto overhead) */ 1122 pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN; 1123 1124 /* pickup a rate */ 1125 if (IEEE80211_IS_MULTICAST(wh->i_addr1) || 1126 ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1127 IEEE80211_FC0_TYPE_MGT)) { 1128 /* mgmt/multicast frames are sent at the lowest avail. rate */ 1129 rate = ni->ni_rates.rs_rates[0]; 1130 } else if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 1131 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1132 } else 1133 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1134 if (rate == 0) 1135 rate = 2; /* XXX should not happen */ 1136 rate &= IEEE80211_RATE_VAL; 1137 1138 /* check if RTS/CTS or CTS-to-self protection must be used */ 1139 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1140 /* multicast frames are not sent at OFDM rates in 802.11b/g */ 1141 if (pktlen > ic->ic_rtsthreshold) { 1142 needrts = 1; /* RTS/CTS based on frame length */ 1143 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1144 RUM_RATE_IS_OFDM(rate)) { 1145 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 1146 needcts = 1; /* CTS-to-self */ 1147 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 1148 needrts = 1; /* RTS/CTS */ 1149 } 1150 } 1151 if (needrts || needcts) { 1152 struct mbuf *mprot; 1153 int protrate, ackrate; 1154 1155 protrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1156 ackrate = rum_ack_rate(ic, rate); 1157 1158 dur = rum_txtime(pktlen, rate, ic->ic_flags) + 1159 rum_txtime(RUM_ACK_SIZE, ackrate, ic->ic_flags) + 1160 2 * sc->sifs; 1161 if (needrts) { 1162 dur += rum_txtime(RUM_CTS_SIZE, rum_ack_rate(ic, 1163 protrate), ic->ic_flags) + sc->sifs; 1164 mprot = ieee80211_get_rts(ic, wh, dur); 1165 } else { 1166 mprot = ieee80211_get_cts_to_self(ic, dur); 1167 } 1168 if (mprot == NULL) { 1169 aprint_error_dev(sc->sc_dev, 1170 "couldn't allocate protection frame\n"); 1171 m_freem(m0); 1172 return ENOBUFS; 1173 } 1174 1175 data = &sc->tx_data[sc->tx_cur]; 1176 desc = (struct rum_tx_desc *)data->buf; 1177 1178 /* avoid multiple free() of the same node for each fragment */ 1179 data->ni = ieee80211_ref_node(ni); 1180 1181 m_copydata(mprot, 0, mprot->m_pkthdr.len, 1182 data->buf + RT2573_TX_DESC_SIZE); 1183 rum_setup_tx_desc(sc, desc, 1184 (needrts ? RT2573_TX_NEED_ACK : 0) | RT2573_TX_MORE_FRAG, 1185 0, mprot->m_pkthdr.len, protrate); 1186 1187 /* no roundup necessary here */ 1188 xferlen = RT2573_TX_DESC_SIZE + mprot->m_pkthdr.len; 1189 1190 /* XXX may want to pass the protection frame to BPF */ 1191 1192 /* mbuf is no longer needed */ 1193 m_freem(mprot); 1194 1195 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, 1196 xferlen, USBD_FORCE_SHORT_XFER, 1197 RUM_TX_TIMEOUT, rum_txeof); 1198 error = usbd_transfer(data->xfer); 1199 if (error != USBD_NORMAL_COMPLETION && 1200 error != USBD_IN_PROGRESS) { 1201 m_freem(m0); 1202 return error; 1203 } 1204 1205 sc->tx_queued++; 1206 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1207 1208 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1209 } 1210 1211 data = &sc->tx_data[sc->tx_cur]; 1212 desc = (struct rum_tx_desc *)data->buf; 1213 1214 data->ni = ni; 1215 1216 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1217 flags |= RT2573_TX_NEED_ACK; 1218 1219 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1220 ic->ic_flags) + sc->sifs; 1221 *(uint16_t *)wh->i_dur = htole16(dur); 1222 1223 /* tell hardware to set timestamp in probe responses */ 1224 if ((wh->i_fc[0] & 1225 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1226 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1227 flags |= RT2573_TX_TIMESTAMP; 1228 } 1229 1230 if (sc->sc_drvbpf != NULL) { 1231 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1232 1233 tap->wt_flags = 0; 1234 tap->wt_rate = rate; 1235 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1236 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1237 tap->wt_antenna = sc->tx_ant; 1238 1239 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1240 } 1241 1242 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1243 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1244 1245 /* align end on a 4-bytes boundary */ 1246 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1247 1248 /* 1249 * No space left in the last URB to store the extra 4 bytes, force 1250 * sending of another URB. 1251 */ 1252 if ((xferlen % 64) == 0) 1253 xferlen += 4; 1254 1255 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1256 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1257 rate, xferlen)); 1258 1259 /* mbuf is no longer needed */ 1260 m_freem(m0); 1261 1262 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1263 USBD_FORCE_SHORT_XFER, RUM_TX_TIMEOUT, rum_txeof); 1264 error = usbd_transfer(data->xfer); 1265 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1266 return error; 1267 1268 sc->tx_queued++; 1269 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1270 1271 return 0; 1272 } 1273 1274 static void 1275 rum_start(struct ifnet *ifp) 1276 { 1277 struct rum_softc *sc = ifp->if_softc; 1278 struct ieee80211com *ic = &sc->sc_ic; 1279 struct ether_header *eh; 1280 struct ieee80211_node *ni; 1281 struct mbuf *m0; 1282 1283 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1284 return; 1285 1286 for (;;) { 1287 IF_POLL(&ic->ic_mgtq, m0); 1288 if (m0 != NULL) { 1289 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1290 ifp->if_flags |= IFF_OACTIVE; 1291 break; 1292 } 1293 IF_DEQUEUE(&ic->ic_mgtq, m0); 1294 1295 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1296 m0->m_pkthdr.rcvif = NULL; 1297 bpf_mtap3(ic->ic_rawbpf, m0); 1298 if (rum_tx_data(sc, m0, ni) != 0) 1299 break; 1300 1301 } else { 1302 if (ic->ic_state != IEEE80211_S_RUN) 1303 break; 1304 IFQ_POLL(&ifp->if_snd, m0); 1305 if (m0 == NULL) 1306 break; 1307 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1308 ifp->if_flags |= IFF_OACTIVE; 1309 break; 1310 } 1311 IFQ_DEQUEUE(&ifp->if_snd, m0); 1312 if (m0->m_len < (int)sizeof(struct ether_header) && 1313 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1314 continue; 1315 1316 eh = mtod(m0, struct ether_header *); 1317 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1318 if (ni == NULL) { 1319 m_freem(m0); 1320 continue; 1321 } 1322 bpf_mtap(ifp, m0); 1323 m0 = ieee80211_encap(ic, m0, ni); 1324 if (m0 == NULL) { 1325 ieee80211_free_node(ni); 1326 continue; 1327 } 1328 bpf_mtap3(ic->ic_rawbpf, m0); 1329 if (rum_tx_data(sc, m0, ni) != 0) { 1330 ieee80211_free_node(ni); 1331 ifp->if_oerrors++; 1332 break; 1333 } 1334 } 1335 1336 sc->sc_tx_timer = 5; 1337 ifp->if_timer = 1; 1338 } 1339 } 1340 1341 static void 1342 rum_watchdog(struct ifnet *ifp) 1343 { 1344 struct rum_softc *sc = ifp->if_softc; 1345 struct ieee80211com *ic = &sc->sc_ic; 1346 1347 ifp->if_timer = 0; 1348 1349 if (sc->sc_tx_timer > 0) { 1350 if (--sc->sc_tx_timer == 0) { 1351 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1352 /*rum_init(ifp); XXX needs a process context! */ 1353 ifp->if_oerrors++; 1354 return; 1355 } 1356 ifp->if_timer = 1; 1357 } 1358 1359 ieee80211_watchdog(ic); 1360 } 1361 1362 static int 1363 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1364 { 1365 #define IS_RUNNING(ifp) \ 1366 (((ifp)->if_flags & IFF_UP) && ((ifp)->if_flags & IFF_RUNNING)) 1367 1368 struct rum_softc *sc = ifp->if_softc; 1369 struct ieee80211com *ic = &sc->sc_ic; 1370 int s, error = 0; 1371 1372 s = splnet(); 1373 1374 switch (cmd) { 1375 case SIOCSIFFLAGS: 1376 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1377 break; 1378 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1379 case IFF_UP|IFF_RUNNING: 1380 rum_update_promisc(sc); 1381 break; 1382 case IFF_UP: 1383 rum_init(ifp); 1384 break; 1385 case IFF_RUNNING: 1386 rum_stop(ifp, 1); 1387 break; 1388 case 0: 1389 break; 1390 } 1391 break; 1392 1393 case SIOCADDMULTI: 1394 case SIOCDELMULTI: 1395 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1396 error = 0; 1397 } 1398 break; 1399 1400 default: 1401 error = ieee80211_ioctl(ic, cmd, data); 1402 } 1403 1404 if (error == ENETRESET) { 1405 if (IS_RUNNING(ifp) && 1406 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1407 rum_init(ifp); 1408 error = 0; 1409 } 1410 1411 splx(s); 1412 1413 return error; 1414 #undef IS_RUNNING 1415 } 1416 1417 static void 1418 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1419 { 1420 usb_device_request_t req; 1421 usbd_status error; 1422 1423 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1424 req.bRequest = RT2573_READ_EEPROM; 1425 USETW(req.wValue, 0); 1426 USETW(req.wIndex, addr); 1427 USETW(req.wLength, len); 1428 1429 error = usbd_do_request(sc->sc_udev, &req, buf); 1430 if (error != 0) { 1431 printf("%s: could not read EEPROM: %s\n", 1432 device_xname(sc->sc_dev), usbd_errstr(error)); 1433 } 1434 } 1435 1436 static uint32_t 1437 rum_read(struct rum_softc *sc, uint16_t reg) 1438 { 1439 uint32_t val; 1440 1441 rum_read_multi(sc, reg, &val, sizeof val); 1442 1443 return le32toh(val); 1444 } 1445 1446 static void 1447 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1448 { 1449 usb_device_request_t req; 1450 usbd_status error; 1451 1452 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1453 req.bRequest = RT2573_READ_MULTI_MAC; 1454 USETW(req.wValue, 0); 1455 USETW(req.wIndex, reg); 1456 USETW(req.wLength, len); 1457 1458 error = usbd_do_request(sc->sc_udev, &req, buf); 1459 if (error != 0) { 1460 printf("%s: could not multi read MAC register: %s\n", 1461 device_xname(sc->sc_dev), usbd_errstr(error)); 1462 } 1463 } 1464 1465 static void 1466 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1467 { 1468 uint32_t tmp = htole32(val); 1469 1470 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1471 } 1472 1473 static void 1474 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1475 { 1476 usb_device_request_t req; 1477 usbd_status error; 1478 int offset; 1479 1480 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1481 req.bRequest = RT2573_WRITE_MULTI_MAC; 1482 USETW(req.wValue, 0); 1483 1484 /* write at most 64 bytes at a time */ 1485 for (offset = 0; offset < len; offset += 64) { 1486 USETW(req.wIndex, reg + offset); 1487 USETW(req.wLength, MIN(len - offset, 64)); 1488 1489 error = usbd_do_request(sc->sc_udev, &req, (char *)buf + offset); 1490 if (error != 0) { 1491 printf("%s: could not multi write MAC register: %s\n", 1492 device_xname(sc->sc_dev), usbd_errstr(error)); 1493 } 1494 } 1495 } 1496 1497 static void 1498 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1499 { 1500 uint32_t tmp; 1501 int ntries; 1502 1503 for (ntries = 0; ntries < 5; ntries++) { 1504 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1505 break; 1506 } 1507 if (ntries == 5) { 1508 printf("%s: could not write to BBP\n", device_xname(sc->sc_dev)); 1509 return; 1510 } 1511 1512 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1513 rum_write(sc, RT2573_PHY_CSR3, tmp); 1514 } 1515 1516 static uint8_t 1517 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1518 { 1519 uint32_t val; 1520 int ntries; 1521 1522 for (ntries = 0; ntries < 5; ntries++) { 1523 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1524 break; 1525 } 1526 if (ntries == 5) { 1527 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1528 return 0; 1529 } 1530 1531 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1532 rum_write(sc, RT2573_PHY_CSR3, val); 1533 1534 for (ntries = 0; ntries < 100; ntries++) { 1535 val = rum_read(sc, RT2573_PHY_CSR3); 1536 if (!(val & RT2573_BBP_BUSY)) 1537 return val & 0xff; 1538 DELAY(1); 1539 } 1540 1541 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1542 return 0; 1543 } 1544 1545 static void 1546 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1547 { 1548 uint32_t tmp; 1549 int ntries; 1550 1551 for (ntries = 0; ntries < 5; ntries++) { 1552 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1553 break; 1554 } 1555 if (ntries == 5) { 1556 printf("%s: could not write to RF\n", device_xname(sc->sc_dev)); 1557 return; 1558 } 1559 1560 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1561 (reg & 3); 1562 rum_write(sc, RT2573_PHY_CSR4, tmp); 1563 1564 /* remember last written value in sc */ 1565 sc->rf_regs[reg] = val; 1566 1567 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1568 } 1569 1570 static void 1571 rum_select_antenna(struct rum_softc *sc) 1572 { 1573 uint8_t bbp4, bbp77; 1574 uint32_t tmp; 1575 1576 bbp4 = rum_bbp_read(sc, 4); 1577 bbp77 = rum_bbp_read(sc, 77); 1578 1579 /* TBD */ 1580 1581 /* make sure Rx is disabled before switching antenna */ 1582 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1583 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1584 1585 rum_bbp_write(sc, 4, bbp4); 1586 rum_bbp_write(sc, 77, bbp77); 1587 1588 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1589 } 1590 1591 /* 1592 * Enable multi-rate retries for frames sent at OFDM rates. 1593 * In 802.11b/g mode, allow fallback to CCK rates. 1594 */ 1595 static void 1596 rum_enable_mrr(struct rum_softc *sc) 1597 { 1598 struct ieee80211com *ic = &sc->sc_ic; 1599 uint32_t tmp; 1600 1601 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1602 1603 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1604 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1605 tmp |= RT2573_MRR_CCK_FALLBACK; 1606 tmp |= RT2573_MRR_ENABLED; 1607 1608 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1609 } 1610 1611 static void 1612 rum_set_txpreamble(struct rum_softc *sc) 1613 { 1614 uint32_t tmp; 1615 1616 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1617 1618 tmp &= ~RT2573_SHORT_PREAMBLE; 1619 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1620 tmp |= RT2573_SHORT_PREAMBLE; 1621 1622 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1623 } 1624 1625 static void 1626 rum_set_basicrates(struct rum_softc *sc) 1627 { 1628 struct ieee80211com *ic = &sc->sc_ic; 1629 1630 /* update basic rate set */ 1631 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1632 /* 11b basic rates: 1, 2Mbps */ 1633 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1634 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1635 /* 11a basic rates: 6, 12, 24Mbps */ 1636 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1637 } else { 1638 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1639 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1640 } 1641 } 1642 1643 /* 1644 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1645 * driver. 1646 */ 1647 static void 1648 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1649 { 1650 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1651 uint32_t tmp; 1652 1653 /* update all BBP registers that depend on the band */ 1654 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1655 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1656 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1657 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1658 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1659 } 1660 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1661 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1662 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1663 } 1664 1665 sc->bbp17 = bbp17; 1666 rum_bbp_write(sc, 17, bbp17); 1667 rum_bbp_write(sc, 96, bbp96); 1668 rum_bbp_write(sc, 104, bbp104); 1669 1670 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1671 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1672 rum_bbp_write(sc, 75, 0x80); 1673 rum_bbp_write(sc, 86, 0x80); 1674 rum_bbp_write(sc, 88, 0x80); 1675 } 1676 1677 rum_bbp_write(sc, 35, bbp35); 1678 rum_bbp_write(sc, 97, bbp97); 1679 rum_bbp_write(sc, 98, bbp98); 1680 1681 tmp = rum_read(sc, RT2573_PHY_CSR0); 1682 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1683 if (IEEE80211_IS_CHAN_2GHZ(c)) 1684 tmp |= RT2573_PA_PE_2GHZ; 1685 else 1686 tmp |= RT2573_PA_PE_5GHZ; 1687 rum_write(sc, RT2573_PHY_CSR0, tmp); 1688 1689 /* 802.11a uses a 16 microseconds short interframe space */ 1690 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1691 } 1692 1693 static void 1694 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1695 { 1696 struct ieee80211com *ic = &sc->sc_ic; 1697 const struct rfprog *rfprog; 1698 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1699 int8_t power; 1700 u_int i, chan; 1701 1702 chan = ieee80211_chan2ieee(ic, c); 1703 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1704 return; 1705 1706 /* select the appropriate RF settings based on what EEPROM says */ 1707 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1708 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1709 1710 /* find the settings for this channel (we know it exists) */ 1711 for (i = 0; rfprog[i].chan != chan; i++); 1712 1713 power = sc->txpow[i]; 1714 if (power < 0) { 1715 bbp94 += power; 1716 power = 0; 1717 } else if (power > 31) { 1718 bbp94 += power - 31; 1719 power = 31; 1720 } 1721 1722 /* 1723 * If we are switching from the 2GHz band to the 5GHz band or 1724 * vice-versa, BBP registers need to be reprogrammed. 1725 */ 1726 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1727 rum_select_band(sc, c); 1728 rum_select_antenna(sc); 1729 } 1730 ic->ic_curchan = c; 1731 1732 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1733 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1734 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1735 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1736 1737 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1738 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1739 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1740 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1741 1742 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1743 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1744 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1745 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1746 1747 DELAY(10); 1748 1749 /* enable smart mode for MIMO-capable RFs */ 1750 bbp3 = rum_bbp_read(sc, 3); 1751 1752 bbp3 &= ~RT2573_SMART_MODE; 1753 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1754 bbp3 |= RT2573_SMART_MODE; 1755 1756 rum_bbp_write(sc, 3, bbp3); 1757 1758 if (bbp94 != RT2573_BBPR94_DEFAULT) 1759 rum_bbp_write(sc, 94, bbp94); 1760 } 1761 1762 /* 1763 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1764 * and HostAP operating modes. 1765 */ 1766 static void 1767 rum_enable_tsf_sync(struct rum_softc *sc) 1768 { 1769 struct ieee80211com *ic = &sc->sc_ic; 1770 uint32_t tmp; 1771 1772 if (ic->ic_opmode != IEEE80211_M_STA) { 1773 /* 1774 * Change default 16ms TBTT adjustment to 8ms. 1775 * Must be done before enabling beacon generation. 1776 */ 1777 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1778 } 1779 1780 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1781 1782 /* set beacon interval (in 1/16ms unit) */ 1783 tmp |= ic->ic_bss->ni_intval * 16; 1784 1785 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1786 if (ic->ic_opmode == IEEE80211_M_STA) 1787 tmp |= RT2573_TSF_MODE(1); 1788 else 1789 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1790 1791 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1792 } 1793 1794 static void 1795 rum_update_slot(struct rum_softc *sc) 1796 { 1797 struct ieee80211com *ic = &sc->sc_ic; 1798 uint8_t slottime; 1799 uint32_t tmp; 1800 1801 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1802 1803 tmp = rum_read(sc, RT2573_MAC_CSR9); 1804 tmp = (tmp & ~0xff) | slottime; 1805 rum_write(sc, RT2573_MAC_CSR9, tmp); 1806 1807 DPRINTF(("setting slot time to %uus\n", slottime)); 1808 } 1809 1810 static void 1811 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1812 { 1813 uint32_t tmp; 1814 1815 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1816 rum_write(sc, RT2573_MAC_CSR4, tmp); 1817 1818 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1819 rum_write(sc, RT2573_MAC_CSR5, tmp); 1820 } 1821 1822 static void 1823 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1824 { 1825 uint32_t tmp; 1826 1827 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1828 rum_write(sc, RT2573_MAC_CSR2, tmp); 1829 1830 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1831 rum_write(sc, RT2573_MAC_CSR3, tmp); 1832 } 1833 1834 static void 1835 rum_update_promisc(struct rum_softc *sc) 1836 { 1837 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1838 uint32_t tmp; 1839 1840 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1841 1842 tmp &= ~RT2573_DROP_NOT_TO_ME; 1843 if (!(ifp->if_flags & IFF_PROMISC)) 1844 tmp |= RT2573_DROP_NOT_TO_ME; 1845 1846 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1847 1848 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1849 "entering" : "leaving")); 1850 } 1851 1852 static const char * 1853 rum_get_rf(int rev) 1854 { 1855 switch (rev) { 1856 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1857 case RT2573_RF_2528: return "RT2528"; 1858 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1859 case RT2573_RF_5226: return "RT5226"; 1860 default: return "unknown"; 1861 } 1862 } 1863 1864 static void 1865 rum_read_eeprom(struct rum_softc *sc) 1866 { 1867 struct ieee80211com *ic = &sc->sc_ic; 1868 uint16_t val; 1869 #ifdef RUM_DEBUG 1870 int i; 1871 #endif 1872 1873 /* read MAC/BBP type */ 1874 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1875 sc->macbbp_rev = le16toh(val); 1876 1877 /* read MAC address */ 1878 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1879 1880 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1881 val = le16toh(val); 1882 sc->rf_rev = (val >> 11) & 0x1f; 1883 sc->hw_radio = (val >> 10) & 0x1; 1884 sc->rx_ant = (val >> 4) & 0x3; 1885 sc->tx_ant = (val >> 2) & 0x3; 1886 sc->nb_ant = val & 0x3; 1887 1888 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1889 1890 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1891 val = le16toh(val); 1892 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1893 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1894 1895 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1896 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1897 1898 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1899 val = le16toh(val); 1900 if ((val & 0xff) != 0xff) 1901 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1902 1903 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1904 val = le16toh(val); 1905 if ((val & 0xff) != 0xff) 1906 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1907 1908 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1909 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1910 1911 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1912 val = le16toh(val); 1913 if ((val & 0xff) != 0xff) 1914 sc->rffreq = val & 0xff; 1915 1916 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1917 1918 /* read Tx power for all a/b/g channels */ 1919 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1920 /* XXX default Tx power for 802.11a channels */ 1921 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1922 #ifdef RUM_DEBUG 1923 for (i = 0; i < 14; i++) 1924 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1925 #endif 1926 1927 /* read default values for BBP registers */ 1928 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1929 #ifdef RUM_DEBUG 1930 for (i = 0; i < 14; i++) { 1931 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1932 continue; 1933 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1934 sc->bbp_prom[i].val)); 1935 } 1936 #endif 1937 } 1938 1939 static int 1940 rum_bbp_init(struct rum_softc *sc) 1941 { 1942 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1943 unsigned int i, ntries; 1944 uint8_t val; 1945 1946 /* wait for BBP to be ready */ 1947 for (ntries = 0; ntries < 100; ntries++) { 1948 val = rum_bbp_read(sc, 0); 1949 if (val != 0 && val != 0xff) 1950 break; 1951 DELAY(1000); 1952 } 1953 if (ntries == 100) { 1954 printf("%s: timeout waiting for BBP\n", 1955 device_xname(sc->sc_dev)); 1956 return EIO; 1957 } 1958 1959 /* initialize BBP registers to default values */ 1960 for (i = 0; i < N(rum_def_bbp); i++) 1961 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1962 1963 /* write vendor-specific BBP values (from EEPROM) */ 1964 for (i = 0; i < 16; i++) { 1965 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1966 continue; 1967 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1968 } 1969 1970 return 0; 1971 #undef N 1972 } 1973 1974 static int 1975 rum_init(struct ifnet *ifp) 1976 { 1977 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1978 struct rum_softc *sc = ifp->if_softc; 1979 struct ieee80211com *ic = &sc->sc_ic; 1980 struct rum_rx_data *data; 1981 uint32_t tmp; 1982 usbd_status error = 0; 1983 unsigned int i, ntries; 1984 1985 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1986 if (rum_attachhook(sc)) 1987 goto fail; 1988 } 1989 1990 rum_stop(ifp, 0); 1991 1992 /* initialize MAC registers to default values */ 1993 for (i = 0; i < N(rum_def_mac); i++) 1994 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1995 1996 /* set host ready */ 1997 rum_write(sc, RT2573_MAC_CSR1, 3); 1998 rum_write(sc, RT2573_MAC_CSR1, 0); 1999 2000 /* wait for BBP/RF to wakeup */ 2001 for (ntries = 0; ntries < 1000; ntries++) { 2002 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 2003 break; 2004 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 2005 DELAY(1000); 2006 } 2007 if (ntries == 1000) { 2008 printf("%s: timeout waiting for BBP/RF to wakeup\n", 2009 device_xname(sc->sc_dev)); 2010 goto fail; 2011 } 2012 2013 if ((error = rum_bbp_init(sc)) != 0) 2014 goto fail; 2015 2016 /* select default channel */ 2017 rum_select_band(sc, ic->ic_curchan); 2018 rum_select_antenna(sc); 2019 rum_set_chan(sc, ic->ic_curchan); 2020 2021 /* clear STA registers */ 2022 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2023 2024 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2025 rum_set_macaddr(sc, ic->ic_myaddr); 2026 2027 /* initialize ASIC */ 2028 rum_write(sc, RT2573_MAC_CSR1, 4); 2029 2030 /* 2031 * Allocate xfer for AMRR statistics requests. 2032 */ 2033 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 2034 if (sc->amrr_xfer == NULL) { 2035 printf("%s: could not allocate AMRR xfer\n", 2036 device_xname(sc->sc_dev)); 2037 goto fail; 2038 } 2039 2040 /* 2041 * Open Tx and Rx USB bulk pipes. 2042 */ 2043 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2044 &sc->sc_tx_pipeh); 2045 if (error != 0) { 2046 printf("%s: could not open Tx pipe: %s\n", 2047 device_xname(sc->sc_dev), usbd_errstr(error)); 2048 goto fail; 2049 } 2050 2051 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2052 &sc->sc_rx_pipeh); 2053 if (error != 0) { 2054 printf("%s: could not open Rx pipe: %s\n", 2055 device_xname(sc->sc_dev), usbd_errstr(error)); 2056 goto fail; 2057 } 2058 2059 /* 2060 * Allocate Tx and Rx xfer queues. 2061 */ 2062 error = rum_alloc_tx_list(sc); 2063 if (error != 0) { 2064 printf("%s: could not allocate Tx list\n", 2065 device_xname(sc->sc_dev)); 2066 goto fail; 2067 } 2068 2069 error = rum_alloc_rx_list(sc); 2070 if (error != 0) { 2071 printf("%s: could not allocate Rx list\n", 2072 device_xname(sc->sc_dev)); 2073 goto fail; 2074 } 2075 2076 /* 2077 * Start up the receive pipe. 2078 */ 2079 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2080 data = &sc->rx_data[i]; 2081 2082 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2083 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2084 error = usbd_transfer(data->xfer); 2085 if (error != USBD_NORMAL_COMPLETION && 2086 error != USBD_IN_PROGRESS) { 2087 printf("%s: could not queue Rx transfer\n", 2088 device_xname(sc->sc_dev)); 2089 goto fail; 2090 } 2091 } 2092 2093 /* update Rx filter */ 2094 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2095 2096 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2097 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2098 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2099 RT2573_DROP_ACKCTS; 2100 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2101 tmp |= RT2573_DROP_TODS; 2102 if (!(ifp->if_flags & IFF_PROMISC)) 2103 tmp |= RT2573_DROP_NOT_TO_ME; 2104 } 2105 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2106 2107 ifp->if_flags &= ~IFF_OACTIVE; 2108 ifp->if_flags |= IFF_RUNNING; 2109 2110 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2111 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2112 else 2113 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2114 2115 return 0; 2116 2117 fail: rum_stop(ifp, 1); 2118 return error; 2119 #undef N 2120 } 2121 2122 static void 2123 rum_stop(struct ifnet *ifp, int disable) 2124 { 2125 struct rum_softc *sc = ifp->if_softc; 2126 struct ieee80211com *ic = &sc->sc_ic; 2127 uint32_t tmp; 2128 2129 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2130 2131 sc->sc_tx_timer = 0; 2132 ifp->if_timer = 0; 2133 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2134 2135 /* disable Rx */ 2136 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2137 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2138 2139 /* reset ASIC */ 2140 rum_write(sc, RT2573_MAC_CSR1, 3); 2141 rum_write(sc, RT2573_MAC_CSR1, 0); 2142 2143 if (sc->amrr_xfer != NULL) { 2144 usbd_free_xfer(sc->amrr_xfer); 2145 sc->amrr_xfer = NULL; 2146 } 2147 2148 if (sc->sc_rx_pipeh != NULL) { 2149 usbd_abort_pipe(sc->sc_rx_pipeh); 2150 usbd_close_pipe(sc->sc_rx_pipeh); 2151 sc->sc_rx_pipeh = NULL; 2152 } 2153 2154 if (sc->sc_tx_pipeh != NULL) { 2155 usbd_abort_pipe(sc->sc_tx_pipeh); 2156 usbd_close_pipe(sc->sc_tx_pipeh); 2157 sc->sc_tx_pipeh = NULL; 2158 } 2159 2160 rum_free_rx_list(sc); 2161 rum_free_tx_list(sc); 2162 } 2163 2164 static int 2165 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2166 { 2167 usb_device_request_t req; 2168 uint16_t reg = RT2573_MCU_CODE_BASE; 2169 usbd_status error; 2170 2171 /* copy firmware image into NIC */ 2172 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2173 rum_write(sc, reg, UGETDW(ucode)); 2174 2175 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2176 req.bRequest = RT2573_MCU_CNTL; 2177 USETW(req.wValue, RT2573_MCU_RUN); 2178 USETW(req.wIndex, 0); 2179 USETW(req.wLength, 0); 2180 2181 error = usbd_do_request(sc->sc_udev, &req, NULL); 2182 if (error != 0) { 2183 printf("%s: could not run firmware: %s\n", 2184 device_xname(sc->sc_dev), usbd_errstr(error)); 2185 } 2186 return error; 2187 } 2188 2189 static int 2190 rum_prepare_beacon(struct rum_softc *sc) 2191 { 2192 struct ieee80211com *ic = &sc->sc_ic; 2193 struct rum_tx_desc desc; 2194 struct mbuf *m0; 2195 int rate; 2196 2197 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2198 if (m0 == NULL) { 2199 aprint_error_dev(sc->sc_dev, 2200 "could not allocate beacon frame\n"); 2201 return ENOBUFS; 2202 } 2203 2204 /* send beacons at the lowest available rate */ 2205 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2206 2207 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2208 m0->m_pkthdr.len, rate); 2209 2210 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2211 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2212 2213 /* copy beacon header and payload into NIC memory */ 2214 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2215 m0->m_pkthdr.len); 2216 2217 m_freem(m0); 2218 2219 return 0; 2220 } 2221 2222 static void 2223 rum_newassoc(struct ieee80211_node *ni, int isnew) 2224 { 2225 /* start with lowest Tx rate */ 2226 ni->ni_txrate = 0; 2227 } 2228 2229 static void 2230 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2231 { 2232 int i; 2233 2234 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2235 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2236 2237 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2238 2239 /* set rate to some reasonable initial value */ 2240 for (i = ni->ni_rates.rs_nrates - 1; 2241 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2242 i--); 2243 ni->ni_txrate = i; 2244 2245 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2246 } 2247 2248 static void 2249 rum_amrr_timeout(void *arg) 2250 { 2251 struct rum_softc *sc = arg; 2252 usb_device_request_t req; 2253 2254 /* 2255 * Asynchronously read statistic registers (cleared by read). 2256 */ 2257 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2258 req.bRequest = RT2573_READ_MULTI_MAC; 2259 USETW(req.wValue, 0); 2260 USETW(req.wIndex, RT2573_STA_CSR0); 2261 USETW(req.wLength, sizeof sc->sta); 2262 2263 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2264 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2265 rum_amrr_update); 2266 (void)usbd_transfer(sc->amrr_xfer); 2267 } 2268 2269 static void 2270 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2271 usbd_status status) 2272 { 2273 struct rum_softc *sc = (struct rum_softc *)priv; 2274 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2275 2276 if (status != USBD_NORMAL_COMPLETION) { 2277 printf("%s: could not retrieve Tx statistics - cancelling " 2278 "automatic rate control\n", device_xname(sc->sc_dev)); 2279 return; 2280 } 2281 2282 /* count TX retry-fail as Tx errors */ 2283 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2284 2285 sc->amn.amn_retrycnt = 2286 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2287 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2288 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2289 2290 sc->amn.amn_txcnt = 2291 sc->amn.amn_retrycnt + 2292 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2293 2294 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2295 2296 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2297 } 2298 2299 static int 2300 rum_activate(device_t self, enum devact act) 2301 { 2302 switch (act) { 2303 case DVACT_DEACTIVATE: 2304 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2305 return 0; 2306 default: 2307 return 0; 2308 } 2309 } 2310 2311 MODULE(MODULE_CLASS_DRIVER, if_rum, "bpf"); 2312 2313 #ifdef _MODULE 2314 #include "ioconf.c" 2315 #endif 2316 2317 static int 2318 if_rum_modcmd(modcmd_t cmd, void *aux) 2319 { 2320 int error = 0; 2321 2322 switch (cmd) { 2323 case MODULE_CMD_INIT: 2324 #ifdef _MODULE 2325 error = config_init_component(cfdriver_ioconf_rum, 2326 cfattach_ioconf_rum, cfdata_ioconf_rum); 2327 #endif 2328 return error; 2329 case MODULE_CMD_FINI: 2330 #ifdef _MODULE 2331 error = config_fini_component(cfdriver_ioconf_rum, 2332 cfattach_ioconf_rum, cfdata_ioconf_rum); 2333 #endif 2334 return error; 2335 default: 2336 return ENOTTY; 2337 } 2338 } 2339
Indexes created Wed Oct 01 19:09:53 GMT 2025