if_rum.c revision 1.48.6.7
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.48.6.7 2015/06/06 14:40:13 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 1.48.6.7 2015/06/06 14:40:13 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(struct usbd_xfer *, void *, 151 usbd_status); 152 static void rum_rxeof(struct usbd_xfer *, void *, 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(struct usbd_xfer *, void *, 203 usbd_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->uaa_vendor, uaa->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, size); 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, size); 293 return ENXIO; 294 } 295 296 firmware_free(ucode, size); 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->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 if (!pmf_device_register(self, NULL, NULL)) 486 aprint_error_dev(self, "couldn't establish power handler\n"); 487 488 return; 489 } 490 491 static int 492 rum_detach(device_t self, int flags) 493 { 494 struct rum_softc *sc = device_private(self); 495 struct ieee80211com *ic = &sc->sc_ic; 496 struct ifnet *ifp = &sc->sc_if; 497 int s; 498 499 if (!ifp->if_softc) 500 return 0; 501 502 pmf_device_deregister(self); 503 504 s = splusb(); 505 506 rum_stop(ifp, 1); 507 usb_rem_task(sc->sc_udev, &sc->sc_task); 508 callout_stop(&sc->sc_scan_ch); 509 callout_stop(&sc->sc_amrr_ch); 510 511 if (sc->amrr_xfer != NULL) { 512 usbd_free_xfer(sc->amrr_xfer); 513 sc->amrr_xfer = NULL; 514 } 515 516 if (sc->sc_rx_pipeh != NULL) { 517 usbd_abort_pipe(sc->sc_rx_pipeh); 518 usbd_close_pipe(sc->sc_rx_pipeh); 519 } 520 521 if (sc->sc_tx_pipeh != NULL) { 522 usbd_abort_pipe(sc->sc_tx_pipeh); 523 usbd_close_pipe(sc->sc_tx_pipeh); 524 } 525 526 bpf_detach(ifp); 527 ieee80211_ifdetach(ic); /* free all nodes */ 528 if_detach(ifp); 529 530 splx(s); 531 532 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 533 534 return 0; 535 } 536 537 static int 538 rum_alloc_tx_list(struct rum_softc *sc) 539 { 540 struct rum_tx_data *data; 541 int i, error; 542 543 sc->tx_cur = sc->tx_queued = 0; 544 545 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 546 data = &sc->tx_data[i]; 547 548 data->sc = sc; 549 550 data->xfer = usbd_alloc_xfer(sc->sc_udev); 551 if (data->xfer == NULL) { 552 printf("%s: could not allocate tx xfer\n", 553 device_xname(sc->sc_dev)); 554 error = ENOMEM; 555 goto fail; 556 } 557 558 data->buf = usbd_alloc_buffer(data->xfer, 559 RT2573_TX_DESC_SIZE + IEEE80211_MAX_LEN); 560 if (data->buf == NULL) { 561 printf("%s: could not allocate tx buffer\n", 562 device_xname(sc->sc_dev)); 563 error = ENOMEM; 564 goto fail; 565 } 566 567 /* clean Tx descriptor */ 568 memset(data->buf, 0, RT2573_TX_DESC_SIZE); 569 } 570 571 return 0; 572 573 fail: rum_free_tx_list(sc); 574 return error; 575 } 576 577 static void 578 rum_free_tx_list(struct rum_softc *sc) 579 { 580 struct rum_tx_data *data; 581 int i; 582 583 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 584 data = &sc->tx_data[i]; 585 586 if (data->xfer != NULL) { 587 usbd_free_xfer(data->xfer); 588 data->xfer = NULL; 589 } 590 591 if (data->ni != NULL) { 592 ieee80211_free_node(data->ni); 593 data->ni = NULL; 594 } 595 } 596 } 597 598 static int 599 rum_alloc_rx_list(struct rum_softc *sc) 600 { 601 struct rum_rx_data *data; 602 int i, error; 603 604 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 605 data = &sc->rx_data[i]; 606 607 data->sc = sc; 608 609 data->xfer = usbd_alloc_xfer(sc->sc_udev); 610 if (data->xfer == NULL) { 611 printf("%s: could not allocate rx xfer\n", 612 device_xname(sc->sc_dev)); 613 error = ENOMEM; 614 goto fail; 615 } 616 617 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 618 printf("%s: could not allocate rx buffer\n", 619 device_xname(sc->sc_dev)); 620 error = ENOMEM; 621 goto fail; 622 } 623 624 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 625 if (data->m == NULL) { 626 printf("%s: could not allocate rx mbuf\n", 627 device_xname(sc->sc_dev)); 628 error = ENOMEM; 629 goto fail; 630 } 631 632 MCLGET(data->m, M_DONTWAIT); 633 if (!(data->m->m_flags & M_EXT)) { 634 printf("%s: could not allocate rx mbuf cluster\n", 635 device_xname(sc->sc_dev)); 636 error = ENOMEM; 637 goto fail; 638 } 639 640 data->buf = mtod(data->m, uint8_t *); 641 } 642 643 return 0; 644 645 fail: rum_free_rx_list(sc); 646 return error; 647 } 648 649 static void 650 rum_free_rx_list(struct rum_softc *sc) 651 { 652 struct rum_rx_data *data; 653 int i; 654 655 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 656 data = &sc->rx_data[i]; 657 658 if (data->xfer != NULL) { 659 usbd_free_xfer(data->xfer); 660 data->xfer = NULL; 661 } 662 663 if (data->m != NULL) { 664 m_freem(data->m); 665 data->m = NULL; 666 } 667 } 668 } 669 670 static int 671 rum_media_change(struct ifnet *ifp) 672 { 673 int error; 674 675 error = ieee80211_media_change(ifp); 676 if (error != ENETRESET) 677 return error; 678 679 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 680 rum_init(ifp); 681 682 return 0; 683 } 684 685 /* 686 * This function is called periodically (every 200ms) during scanning to 687 * switch from one channel to another. 688 */ 689 static void 690 rum_next_scan(void *arg) 691 { 692 struct rum_softc *sc = arg; 693 struct ieee80211com *ic = &sc->sc_ic; 694 int s; 695 696 s = splnet(); 697 if (ic->ic_state == IEEE80211_S_SCAN) 698 ieee80211_next_scan(ic); 699 splx(s); 700 } 701 702 static void 703 rum_task(void *arg) 704 { 705 struct rum_softc *sc = arg; 706 struct ieee80211com *ic = &sc->sc_ic; 707 enum ieee80211_state ostate; 708 struct ieee80211_node *ni; 709 uint32_t tmp; 710 711 ostate = ic->ic_state; 712 713 switch (sc->sc_state) { 714 case IEEE80211_S_INIT: 715 if (ostate == IEEE80211_S_RUN) { 716 /* abort TSF synchronization */ 717 tmp = rum_read(sc, RT2573_TXRX_CSR9); 718 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 719 } 720 break; 721 722 case IEEE80211_S_SCAN: 723 rum_set_chan(sc, ic->ic_curchan); 724 callout_reset(&sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 725 break; 726 727 case IEEE80211_S_AUTH: 728 rum_set_chan(sc, ic->ic_curchan); 729 break; 730 731 case IEEE80211_S_ASSOC: 732 rum_set_chan(sc, ic->ic_curchan); 733 break; 734 735 case IEEE80211_S_RUN: 736 rum_set_chan(sc, ic->ic_curchan); 737 738 ni = ic->ic_bss; 739 740 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 741 rum_update_slot(sc); 742 rum_enable_mrr(sc); 743 rum_set_txpreamble(sc); 744 rum_set_basicrates(sc); 745 rum_set_bssid(sc, ni->ni_bssid); 746 } 747 748 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 749 ic->ic_opmode == IEEE80211_M_IBSS) 750 rum_prepare_beacon(sc); 751 752 if (ic->ic_opmode != IEEE80211_M_MONITOR) 753 rum_enable_tsf_sync(sc); 754 755 if (ic->ic_opmode == IEEE80211_M_STA) { 756 /* fake a join to init the tx rate */ 757 rum_newassoc(ic->ic_bss, 1); 758 759 /* enable automatic rate adaptation in STA mode */ 760 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 761 rum_amrr_start(sc, ni); 762 } 763 764 break; 765 } 766 767 sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); 768 } 769 770 static int 771 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 772 { 773 struct rum_softc *sc = ic->ic_ifp->if_softc; 774 775 usb_rem_task(sc->sc_udev, &sc->sc_task); 776 callout_stop(&sc->sc_scan_ch); 777 callout_stop(&sc->sc_amrr_ch); 778 779 /* do it in a process context */ 780 sc->sc_state = nstate; 781 sc->sc_arg = arg; 782 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 783 784 return 0; 785 } 786 787 /* quickly determine if a given rate is CCK or OFDM */ 788 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 789 790 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 791 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 792 793 static void 794 rum_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 795 { 796 struct rum_tx_data *data = priv; 797 struct rum_softc *sc = data->sc; 798 struct ifnet *ifp = &sc->sc_if; 799 int s; 800 801 if (status != USBD_NORMAL_COMPLETION) { 802 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 803 return; 804 805 printf("%s: could not transmit buffer: %s\n", 806 device_xname(sc->sc_dev), usbd_errstr(status)); 807 808 if (status == USBD_STALLED) 809 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 810 811 ifp->if_oerrors++; 812 return; 813 } 814 815 s = splnet(); 816 817 ieee80211_free_node(data->ni); 818 data->ni = NULL; 819 820 sc->tx_queued--; 821 ifp->if_opackets++; 822 823 DPRINTFN(10, ("tx done\n")); 824 825 sc->sc_tx_timer = 0; 826 ifp->if_flags &= ~IFF_OACTIVE; 827 rum_start(ifp); 828 829 splx(s); 830 } 831 832 static void 833 rum_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 834 { 835 struct rum_rx_data *data = priv; 836 struct rum_softc *sc = data->sc; 837 struct ieee80211com *ic = &sc->sc_ic; 838 struct ifnet *ifp = &sc->sc_if; 839 struct rum_rx_desc *desc; 840 struct ieee80211_frame *wh; 841 struct ieee80211_node *ni; 842 struct mbuf *mnew, *m; 843 int s, len; 844 845 if (status != USBD_NORMAL_COMPLETION) { 846 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 847 return; 848 849 if (status == USBD_STALLED) 850 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 851 goto skip; 852 } 853 854 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 855 856 if (len < (int)(RT2573_RX_DESC_SIZE + 857 sizeof(struct ieee80211_frame_min))) { 858 DPRINTF(("%s: xfer too short %d\n", device_xname(sc->sc_dev), 859 len)); 860 ifp->if_ierrors++; 861 goto skip; 862 } 863 864 desc = (struct rum_rx_desc *)data->buf; 865 866 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 867 /* 868 * This should not happen since we did not request to receive 869 * those frames when we filled RT2573_TXRX_CSR0. 870 */ 871 DPRINTFN(5, ("CRC error\n")); 872 ifp->if_ierrors++; 873 goto skip; 874 } 875 876 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 877 if (mnew == NULL) { 878 printf("%s: could not allocate rx mbuf\n", 879 device_xname(sc->sc_dev)); 880 ifp->if_ierrors++; 881 goto skip; 882 } 883 884 MCLGET(mnew, M_DONTWAIT); 885 if (!(mnew->m_flags & M_EXT)) { 886 printf("%s: could not allocate rx mbuf cluster\n", 887 device_xname(sc->sc_dev)); 888 m_freem(mnew); 889 ifp->if_ierrors++; 890 goto skip; 891 } 892 893 m = data->m; 894 data->m = mnew; 895 data->buf = mtod(data->m, uint8_t *); 896 897 /* finalize mbuf */ 898 m->m_pkthdr.rcvif = ifp; 899 m->m_data = (void *)(desc + 1); 900 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 901 902 s = splnet(); 903 904 if (sc->sc_drvbpf != NULL) { 905 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 906 907 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 908 tap->wr_rate = rum_rxrate(desc); 909 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 910 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 911 tap->wr_antenna = sc->rx_ant; 912 tap->wr_antsignal = desc->rssi; 913 914 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 915 } 916 917 wh = mtod(m, struct ieee80211_frame *); 918 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 919 920 /* send the frame to the 802.11 layer */ 921 ieee80211_input(ic, m, ni, desc->rssi, 0); 922 923 /* node is no longer needed */ 924 ieee80211_free_node(ni); 925 926 splx(s); 927 928 DPRINTFN(15, ("rx done\n")); 929 930 skip: /* setup a new transfer */ 931 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 932 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 933 usbd_transfer(xfer); 934 } 935 936 /* 937 * This function is only used by the Rx radiotap code. It returns the rate at 938 * which a given frame was received. 939 */ 940 static uint8_t 941 rum_rxrate(const struct rum_rx_desc *desc) 942 { 943 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 944 /* reverse function of rum_plcp_signal */ 945 switch (desc->rate) { 946 case 0xb: return 12; 947 case 0xf: return 18; 948 case 0xa: return 24; 949 case 0xe: return 36; 950 case 0x9: return 48; 951 case 0xd: return 72; 952 case 0x8: return 96; 953 case 0xc: return 108; 954 } 955 } else { 956 if (desc->rate == 10) 957 return 2; 958 if (desc->rate == 20) 959 return 4; 960 if (desc->rate == 55) 961 return 11; 962 if (desc->rate == 110) 963 return 22; 964 } 965 return 2; /* should not get there */ 966 } 967 968 /* 969 * Return the expected ack rate for a frame transmitted at rate `rate'. 970 * XXX: this should depend on the destination node basic rate set. 971 */ 972 static int 973 rum_ack_rate(struct ieee80211com *ic, int rate) 974 { 975 switch (rate) { 976 /* CCK rates */ 977 case 2: 978 return 2; 979 case 4: 980 case 11: 981 case 22: 982 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 983 984 /* OFDM rates */ 985 case 12: 986 case 18: 987 return 12; 988 case 24: 989 case 36: 990 return 24; 991 case 48: 992 case 72: 993 case 96: 994 case 108: 995 return 48; 996 } 997 998 /* default to 1Mbps */ 999 return 2; 1000 } 1001 1002 /* 1003 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 1004 * The function automatically determines the operating mode depending on the 1005 * given rate. `flags' indicates whether short preamble is in use or not. 1006 */ 1007 static uint16_t 1008 rum_txtime(int len, int rate, uint32_t flags) 1009 { 1010 uint16_t txtime; 1011 1012 if (RUM_RATE_IS_OFDM(rate)) { 1013 /* IEEE Std 802.11a-1999, pp. 37 */ 1014 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 1015 txtime = 16 + 4 + 4 * txtime + 6; 1016 } else { 1017 /* IEEE Std 802.11b-1999, pp. 28 */ 1018 txtime = (16 * len + rate - 1) / rate; 1019 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1020 txtime += 72 + 24; 1021 else 1022 txtime += 144 + 48; 1023 } 1024 return txtime; 1025 } 1026 1027 static uint8_t 1028 rum_plcp_signal(int rate) 1029 { 1030 switch (rate) { 1031 /* CCK rates (returned values are device-dependent) */ 1032 case 2: return 0x0; 1033 case 4: return 0x1; 1034 case 11: return 0x2; 1035 case 22: return 0x3; 1036 1037 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1038 case 12: return 0xb; 1039 case 18: return 0xf; 1040 case 24: return 0xa; 1041 case 36: return 0xe; 1042 case 48: return 0x9; 1043 case 72: return 0xd; 1044 case 96: return 0x8; 1045 case 108: return 0xc; 1046 1047 /* unsupported rates (should not get there) */ 1048 default: return 0xff; 1049 } 1050 } 1051 1052 static void 1053 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1054 uint32_t flags, uint16_t xflags, int len, int rate) 1055 { 1056 struct ieee80211com *ic = &sc->sc_ic; 1057 uint16_t plcp_length; 1058 int remainder; 1059 1060 desc->flags = htole32(flags); 1061 desc->flags |= htole32(RT2573_TX_VALID); 1062 desc->flags |= htole32(len << 16); 1063 1064 desc->xflags = htole16(xflags); 1065 1066 desc->wme = htole16( 1067 RT2573_QID(0) | 1068 RT2573_AIFSN(2) | 1069 RT2573_LOGCWMIN(4) | 1070 RT2573_LOGCWMAX(10)); 1071 1072 /* setup PLCP fields */ 1073 desc->plcp_signal = rum_plcp_signal(rate); 1074 desc->plcp_service = 4; 1075 1076 len += IEEE80211_CRC_LEN; 1077 if (RUM_RATE_IS_OFDM(rate)) { 1078 desc->flags |= htole32(RT2573_TX_OFDM); 1079 1080 plcp_length = len & 0xfff; 1081 desc->plcp_length_hi = plcp_length >> 6; 1082 desc->plcp_length_lo = plcp_length & 0x3f; 1083 } else { 1084 plcp_length = (16 * len + rate - 1) / rate; 1085 if (rate == 22) { 1086 remainder = (16 * len) % 22; 1087 if (remainder != 0 && remainder < 7) 1088 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1089 } 1090 desc->plcp_length_hi = plcp_length >> 8; 1091 desc->plcp_length_lo = plcp_length & 0xff; 1092 1093 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1094 desc->plcp_signal |= 0x08; 1095 } 1096 } 1097 1098 #define RUM_TX_TIMEOUT 5000 1099 1100 static int 1101 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1102 { 1103 struct ieee80211com *ic = &sc->sc_ic; 1104 struct rum_tx_desc *desc; 1105 struct rum_tx_data *data; 1106 struct ieee80211_frame *wh; 1107 struct ieee80211_key *k; 1108 uint32_t flags = 0; 1109 uint16_t dur; 1110 usbd_status error; 1111 int rate, xferlen, pktlen, needrts = 0, needcts = 0; 1112 1113 wh = mtod(m0, struct ieee80211_frame *); 1114 1115 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1116 k = ieee80211_crypto_encap(ic, ni, m0); 1117 if (k == NULL) { 1118 m_freem(m0); 1119 return ENOBUFS; 1120 } 1121 1122 /* packet header may have moved, reset our local pointer */ 1123 wh = mtod(m0, struct ieee80211_frame *); 1124 } 1125 1126 /* compute actual packet length (including CRC and crypto overhead) */ 1127 pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN; 1128 1129 /* pickup a rate */ 1130 if (IEEE80211_IS_MULTICAST(wh->i_addr1) || 1131 ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1132 IEEE80211_FC0_TYPE_MGT)) { 1133 /* mgmt/multicast frames are sent at the lowest avail. rate */ 1134 rate = ni->ni_rates.rs_rates[0]; 1135 } else if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 1136 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1137 } else 1138 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1139 if (rate == 0) 1140 rate = 2; /* XXX should not happen */ 1141 rate &= IEEE80211_RATE_VAL; 1142 1143 /* check if RTS/CTS or CTS-to-self protection must be used */ 1144 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1145 /* multicast frames are not sent at OFDM rates in 802.11b/g */ 1146 if (pktlen > ic->ic_rtsthreshold) { 1147 needrts = 1; /* RTS/CTS based on frame length */ 1148 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1149 RUM_RATE_IS_OFDM(rate)) { 1150 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 1151 needcts = 1; /* CTS-to-self */ 1152 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 1153 needrts = 1; /* RTS/CTS */ 1154 } 1155 } 1156 if (needrts || needcts) { 1157 struct mbuf *mprot; 1158 int protrate, ackrate; 1159 1160 protrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1161 ackrate = rum_ack_rate(ic, rate); 1162 1163 dur = rum_txtime(pktlen, rate, ic->ic_flags) + 1164 rum_txtime(RUM_ACK_SIZE, ackrate, ic->ic_flags) + 1165 2 * sc->sifs; 1166 if (needrts) { 1167 dur += rum_txtime(RUM_CTS_SIZE, rum_ack_rate(ic, 1168 protrate), ic->ic_flags) + sc->sifs; 1169 mprot = ieee80211_get_rts(ic, wh, dur); 1170 } else { 1171 mprot = ieee80211_get_cts_to_self(ic, dur); 1172 } 1173 if (mprot == NULL) { 1174 aprint_error_dev(sc->sc_dev, 1175 "couldn't allocate protection frame\n"); 1176 m_freem(m0); 1177 return ENOBUFS; 1178 } 1179 1180 data = &sc->tx_data[sc->tx_cur]; 1181 desc = (struct rum_tx_desc *)data->buf; 1182 1183 /* avoid multiple free() of the same node for each fragment */ 1184 data->ni = ieee80211_ref_node(ni); 1185 1186 m_copydata(mprot, 0, mprot->m_pkthdr.len, 1187 data->buf + RT2573_TX_DESC_SIZE); 1188 rum_setup_tx_desc(sc, desc, 1189 (needrts ? RT2573_TX_NEED_ACK : 0) | RT2573_TX_MORE_FRAG, 1190 0, mprot->m_pkthdr.len, protrate); 1191 1192 /* no roundup necessary here */ 1193 xferlen = RT2573_TX_DESC_SIZE + mprot->m_pkthdr.len; 1194 1195 /* XXX may want to pass the protection frame to BPF */ 1196 1197 /* mbuf is no longer needed */ 1198 m_freem(mprot); 1199 1200 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, 1201 xferlen, USBD_FORCE_SHORT_XFER, 1202 RUM_TX_TIMEOUT, rum_txeof); 1203 error = usbd_transfer(data->xfer); 1204 if (error != USBD_NORMAL_COMPLETION && 1205 error != USBD_IN_PROGRESS) { 1206 m_freem(m0); 1207 return error; 1208 } 1209 1210 sc->tx_queued++; 1211 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1212 1213 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1214 } 1215 1216 data = &sc->tx_data[sc->tx_cur]; 1217 desc = (struct rum_tx_desc *)data->buf; 1218 1219 data->ni = ni; 1220 1221 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1222 flags |= RT2573_TX_NEED_ACK; 1223 1224 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1225 ic->ic_flags) + sc->sifs; 1226 *(uint16_t *)wh->i_dur = htole16(dur); 1227 1228 /* tell hardware to set timestamp in probe responses */ 1229 if ((wh->i_fc[0] & 1230 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1231 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1232 flags |= RT2573_TX_TIMESTAMP; 1233 } 1234 1235 if (sc->sc_drvbpf != NULL) { 1236 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1237 1238 tap->wt_flags = 0; 1239 tap->wt_rate = rate; 1240 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1241 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1242 tap->wt_antenna = sc->tx_ant; 1243 1244 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1245 } 1246 1247 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1248 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1249 1250 /* align end on a 4-bytes boundary */ 1251 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1252 1253 /* 1254 * No space left in the last URB to store the extra 4 bytes, force 1255 * sending of another URB. 1256 */ 1257 if ((xferlen % 64) == 0) 1258 xferlen += 4; 1259 1260 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1261 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1262 rate, xferlen)); 1263 1264 /* mbuf is no longer needed */ 1265 m_freem(m0); 1266 1267 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1268 USBD_FORCE_SHORT_XFER, RUM_TX_TIMEOUT, rum_txeof); 1269 error = usbd_transfer(data->xfer); 1270 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1271 return error; 1272 1273 sc->tx_queued++; 1274 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1275 1276 return 0; 1277 } 1278 1279 static void 1280 rum_start(struct ifnet *ifp) 1281 { 1282 struct rum_softc *sc = ifp->if_softc; 1283 struct ieee80211com *ic = &sc->sc_ic; 1284 struct ether_header *eh; 1285 struct ieee80211_node *ni; 1286 struct mbuf *m0; 1287 1288 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1289 return; 1290 1291 for (;;) { 1292 IF_POLL(&ic->ic_mgtq, m0); 1293 if (m0 != NULL) { 1294 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1295 ifp->if_flags |= IFF_OACTIVE; 1296 break; 1297 } 1298 IF_DEQUEUE(&ic->ic_mgtq, m0); 1299 1300 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1301 m0->m_pkthdr.rcvif = NULL; 1302 bpf_mtap3(ic->ic_rawbpf, m0); 1303 if (rum_tx_data(sc, m0, ni) != 0) 1304 break; 1305 1306 } else { 1307 if (ic->ic_state != IEEE80211_S_RUN) 1308 break; 1309 IFQ_POLL(&ifp->if_snd, m0); 1310 if (m0 == NULL) 1311 break; 1312 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1313 ifp->if_flags |= IFF_OACTIVE; 1314 break; 1315 } 1316 IFQ_DEQUEUE(&ifp->if_snd, m0); 1317 if (m0->m_len < (int)sizeof(struct ether_header) && 1318 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1319 continue; 1320 1321 eh = mtod(m0, struct ether_header *); 1322 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1323 if (ni == NULL) { 1324 m_freem(m0); 1325 continue; 1326 } 1327 bpf_mtap(ifp, m0); 1328 m0 = ieee80211_encap(ic, m0, ni); 1329 if (m0 == NULL) { 1330 ieee80211_free_node(ni); 1331 continue; 1332 } 1333 bpf_mtap3(ic->ic_rawbpf, m0); 1334 if (rum_tx_data(sc, m0, ni) != 0) { 1335 ieee80211_free_node(ni); 1336 ifp->if_oerrors++; 1337 break; 1338 } 1339 } 1340 1341 sc->sc_tx_timer = 5; 1342 ifp->if_timer = 1; 1343 } 1344 } 1345 1346 static void 1347 rum_watchdog(struct ifnet *ifp) 1348 { 1349 struct rum_softc *sc = ifp->if_softc; 1350 struct ieee80211com *ic = &sc->sc_ic; 1351 1352 ifp->if_timer = 0; 1353 1354 if (sc->sc_tx_timer > 0) { 1355 if (--sc->sc_tx_timer == 0) { 1356 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1357 /*rum_init(ifp); XXX needs a process context! */ 1358 ifp->if_oerrors++; 1359 return; 1360 } 1361 ifp->if_timer = 1; 1362 } 1363 1364 ieee80211_watchdog(ic); 1365 } 1366 1367 static int 1368 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1369 { 1370 #define IS_RUNNING(ifp) \ 1371 (((ifp)->if_flags & IFF_UP) && ((ifp)->if_flags & IFF_RUNNING)) 1372 1373 struct rum_softc *sc = ifp->if_softc; 1374 struct ieee80211com *ic = &sc->sc_ic; 1375 int s, error = 0; 1376 1377 s = splnet(); 1378 1379 switch (cmd) { 1380 case SIOCSIFFLAGS: 1381 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1382 break; 1383 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1384 case IFF_UP|IFF_RUNNING: 1385 rum_update_promisc(sc); 1386 break; 1387 case IFF_UP: 1388 rum_init(ifp); 1389 break; 1390 case IFF_RUNNING: 1391 rum_stop(ifp, 1); 1392 break; 1393 case 0: 1394 break; 1395 } 1396 break; 1397 1398 case SIOCADDMULTI: 1399 case SIOCDELMULTI: 1400 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1401 error = 0; 1402 } 1403 break; 1404 1405 default: 1406 error = ieee80211_ioctl(ic, cmd, data); 1407 } 1408 1409 if (error == ENETRESET) { 1410 if (IS_RUNNING(ifp) && 1411 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1412 rum_init(ifp); 1413 error = 0; 1414 } 1415 1416 splx(s); 1417 1418 return error; 1419 #undef IS_RUNNING 1420 } 1421 1422 static void 1423 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1424 { 1425 usb_device_request_t req; 1426 usbd_status error; 1427 1428 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1429 req.bRequest = RT2573_READ_EEPROM; 1430 USETW(req.wValue, 0); 1431 USETW(req.wIndex, addr); 1432 USETW(req.wLength, len); 1433 1434 error = usbd_do_request(sc->sc_udev, &req, buf); 1435 if (error != 0) { 1436 printf("%s: could not read EEPROM: %s\n", 1437 device_xname(sc->sc_dev), usbd_errstr(error)); 1438 } 1439 } 1440 1441 static uint32_t 1442 rum_read(struct rum_softc *sc, uint16_t reg) 1443 { 1444 uint32_t val; 1445 1446 rum_read_multi(sc, reg, &val, sizeof val); 1447 1448 return le32toh(val); 1449 } 1450 1451 static void 1452 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1453 { 1454 usb_device_request_t req; 1455 usbd_status error; 1456 1457 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1458 req.bRequest = RT2573_READ_MULTI_MAC; 1459 USETW(req.wValue, 0); 1460 USETW(req.wIndex, reg); 1461 USETW(req.wLength, len); 1462 1463 error = usbd_do_request(sc->sc_udev, &req, buf); 1464 if (error != 0) { 1465 printf("%s: could not multi read MAC register: %s\n", 1466 device_xname(sc->sc_dev), usbd_errstr(error)); 1467 } 1468 } 1469 1470 static void 1471 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1472 { 1473 uint32_t tmp = htole32(val); 1474 1475 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1476 } 1477 1478 static void 1479 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1480 { 1481 usb_device_request_t req; 1482 usbd_status error; 1483 int offset; 1484 1485 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1486 req.bRequest = RT2573_WRITE_MULTI_MAC; 1487 USETW(req.wValue, 0); 1488 1489 /* write at most 64 bytes at a time */ 1490 for (offset = 0; offset < len; offset += 64) { 1491 USETW(req.wIndex, reg + offset); 1492 USETW(req.wLength, MIN(len - offset, 64)); 1493 1494 error = usbd_do_request(sc->sc_udev, &req, (char *)buf + offset); 1495 if (error != 0) { 1496 printf("%s: could not multi write MAC register: %s\n", 1497 device_xname(sc->sc_dev), usbd_errstr(error)); 1498 } 1499 } 1500 } 1501 1502 static void 1503 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1504 { 1505 uint32_t tmp; 1506 int ntries; 1507 1508 for (ntries = 0; ntries < 5; ntries++) { 1509 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1510 break; 1511 } 1512 if (ntries == 5) { 1513 printf("%s: could not write to BBP\n", device_xname(sc->sc_dev)); 1514 return; 1515 } 1516 1517 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1518 rum_write(sc, RT2573_PHY_CSR3, tmp); 1519 } 1520 1521 static uint8_t 1522 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1523 { 1524 uint32_t val; 1525 int ntries; 1526 1527 for (ntries = 0; ntries < 5; ntries++) { 1528 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1529 break; 1530 } 1531 if (ntries == 5) { 1532 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1533 return 0; 1534 } 1535 1536 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1537 rum_write(sc, RT2573_PHY_CSR3, val); 1538 1539 for (ntries = 0; ntries < 100; ntries++) { 1540 val = rum_read(sc, RT2573_PHY_CSR3); 1541 if (!(val & RT2573_BBP_BUSY)) 1542 return val & 0xff; 1543 DELAY(1); 1544 } 1545 1546 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1547 return 0; 1548 } 1549 1550 static void 1551 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1552 { 1553 uint32_t tmp; 1554 int ntries; 1555 1556 for (ntries = 0; ntries < 5; ntries++) { 1557 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1558 break; 1559 } 1560 if (ntries == 5) { 1561 printf("%s: could not write to RF\n", device_xname(sc->sc_dev)); 1562 return; 1563 } 1564 1565 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1566 (reg & 3); 1567 rum_write(sc, RT2573_PHY_CSR4, tmp); 1568 1569 /* remember last written value in sc */ 1570 sc->rf_regs[reg] = val; 1571 1572 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1573 } 1574 1575 static void 1576 rum_select_antenna(struct rum_softc *sc) 1577 { 1578 uint8_t bbp4, bbp77; 1579 uint32_t tmp; 1580 1581 bbp4 = rum_bbp_read(sc, 4); 1582 bbp77 = rum_bbp_read(sc, 77); 1583 1584 /* TBD */ 1585 1586 /* make sure Rx is disabled before switching antenna */ 1587 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1588 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1589 1590 rum_bbp_write(sc, 4, bbp4); 1591 rum_bbp_write(sc, 77, bbp77); 1592 1593 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1594 } 1595 1596 /* 1597 * Enable multi-rate retries for frames sent at OFDM rates. 1598 * In 802.11b/g mode, allow fallback to CCK rates. 1599 */ 1600 static void 1601 rum_enable_mrr(struct rum_softc *sc) 1602 { 1603 struct ieee80211com *ic = &sc->sc_ic; 1604 uint32_t tmp; 1605 1606 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1607 1608 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1609 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1610 tmp |= RT2573_MRR_CCK_FALLBACK; 1611 tmp |= RT2573_MRR_ENABLED; 1612 1613 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1614 } 1615 1616 static void 1617 rum_set_txpreamble(struct rum_softc *sc) 1618 { 1619 uint32_t tmp; 1620 1621 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1622 1623 tmp &= ~RT2573_SHORT_PREAMBLE; 1624 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1625 tmp |= RT2573_SHORT_PREAMBLE; 1626 1627 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1628 } 1629 1630 static void 1631 rum_set_basicrates(struct rum_softc *sc) 1632 { 1633 struct ieee80211com *ic = &sc->sc_ic; 1634 1635 /* update basic rate set */ 1636 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1637 /* 11b basic rates: 1, 2Mbps */ 1638 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1639 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1640 /* 11a basic rates: 6, 12, 24Mbps */ 1641 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1642 } else { 1643 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1644 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1645 } 1646 } 1647 1648 /* 1649 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1650 * driver. 1651 */ 1652 static void 1653 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1654 { 1655 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1656 uint32_t tmp; 1657 1658 /* update all BBP registers that depend on the band */ 1659 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1660 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1661 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1662 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1663 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1664 } 1665 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1666 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1667 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1668 } 1669 1670 sc->bbp17 = bbp17; 1671 rum_bbp_write(sc, 17, bbp17); 1672 rum_bbp_write(sc, 96, bbp96); 1673 rum_bbp_write(sc, 104, bbp104); 1674 1675 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1676 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1677 rum_bbp_write(sc, 75, 0x80); 1678 rum_bbp_write(sc, 86, 0x80); 1679 rum_bbp_write(sc, 88, 0x80); 1680 } 1681 1682 rum_bbp_write(sc, 35, bbp35); 1683 rum_bbp_write(sc, 97, bbp97); 1684 rum_bbp_write(sc, 98, bbp98); 1685 1686 tmp = rum_read(sc, RT2573_PHY_CSR0); 1687 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1688 if (IEEE80211_IS_CHAN_2GHZ(c)) 1689 tmp |= RT2573_PA_PE_2GHZ; 1690 else 1691 tmp |= RT2573_PA_PE_5GHZ; 1692 rum_write(sc, RT2573_PHY_CSR0, tmp); 1693 1694 /* 802.11a uses a 16 microseconds short interframe space */ 1695 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1696 } 1697 1698 static void 1699 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1700 { 1701 struct ieee80211com *ic = &sc->sc_ic; 1702 const struct rfprog *rfprog; 1703 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1704 int8_t power; 1705 u_int i, chan; 1706 1707 chan = ieee80211_chan2ieee(ic, c); 1708 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1709 return; 1710 1711 /* select the appropriate RF settings based on what EEPROM says */ 1712 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1713 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1714 1715 /* find the settings for this channel (we know it exists) */ 1716 for (i = 0; rfprog[i].chan != chan; i++); 1717 1718 power = sc->txpow[i]; 1719 if (power < 0) { 1720 bbp94 += power; 1721 power = 0; 1722 } else if (power > 31) { 1723 bbp94 += power - 31; 1724 power = 31; 1725 } 1726 1727 /* 1728 * If we are switching from the 2GHz band to the 5GHz band or 1729 * vice-versa, BBP registers need to be reprogrammed. 1730 */ 1731 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1732 rum_select_band(sc, c); 1733 rum_select_antenna(sc); 1734 } 1735 ic->ic_curchan = c; 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); 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 | 1); 1745 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1746 1747 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1748 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1749 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1750 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1751 1752 DELAY(10); 1753 1754 /* enable smart mode for MIMO-capable RFs */ 1755 bbp3 = rum_bbp_read(sc, 3); 1756 1757 bbp3 &= ~RT2573_SMART_MODE; 1758 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1759 bbp3 |= RT2573_SMART_MODE; 1760 1761 rum_bbp_write(sc, 3, bbp3); 1762 1763 if (bbp94 != RT2573_BBPR94_DEFAULT) 1764 rum_bbp_write(sc, 94, bbp94); 1765 } 1766 1767 /* 1768 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1769 * and HostAP operating modes. 1770 */ 1771 static void 1772 rum_enable_tsf_sync(struct rum_softc *sc) 1773 { 1774 struct ieee80211com *ic = &sc->sc_ic; 1775 uint32_t tmp; 1776 1777 if (ic->ic_opmode != IEEE80211_M_STA) { 1778 /* 1779 * Change default 16ms TBTT adjustment to 8ms. 1780 * Must be done before enabling beacon generation. 1781 */ 1782 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1783 } 1784 1785 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1786 1787 /* set beacon interval (in 1/16ms unit) */ 1788 tmp |= ic->ic_bss->ni_intval * 16; 1789 1790 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1791 if (ic->ic_opmode == IEEE80211_M_STA) 1792 tmp |= RT2573_TSF_MODE(1); 1793 else 1794 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1795 1796 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1797 } 1798 1799 static void 1800 rum_update_slot(struct rum_softc *sc) 1801 { 1802 struct ieee80211com *ic = &sc->sc_ic; 1803 uint8_t slottime; 1804 uint32_t tmp; 1805 1806 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1807 1808 tmp = rum_read(sc, RT2573_MAC_CSR9); 1809 tmp = (tmp & ~0xff) | slottime; 1810 rum_write(sc, RT2573_MAC_CSR9, tmp); 1811 1812 DPRINTF(("setting slot time to %uus\n", slottime)); 1813 } 1814 1815 static void 1816 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1817 { 1818 uint32_t tmp; 1819 1820 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1821 rum_write(sc, RT2573_MAC_CSR4, tmp); 1822 1823 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1824 rum_write(sc, RT2573_MAC_CSR5, tmp); 1825 } 1826 1827 static void 1828 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1829 { 1830 uint32_t tmp; 1831 1832 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1833 rum_write(sc, RT2573_MAC_CSR2, tmp); 1834 1835 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1836 rum_write(sc, RT2573_MAC_CSR3, tmp); 1837 } 1838 1839 static void 1840 rum_update_promisc(struct rum_softc *sc) 1841 { 1842 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1843 uint32_t tmp; 1844 1845 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1846 1847 tmp &= ~RT2573_DROP_NOT_TO_ME; 1848 if (!(ifp->if_flags & IFF_PROMISC)) 1849 tmp |= RT2573_DROP_NOT_TO_ME; 1850 1851 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1852 1853 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1854 "entering" : "leaving")); 1855 } 1856 1857 static const char * 1858 rum_get_rf(int rev) 1859 { 1860 switch (rev) { 1861 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1862 case RT2573_RF_2528: return "RT2528"; 1863 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1864 case RT2573_RF_5226: return "RT5226"; 1865 default: return "unknown"; 1866 } 1867 } 1868 1869 static void 1870 rum_read_eeprom(struct rum_softc *sc) 1871 { 1872 struct ieee80211com *ic = &sc->sc_ic; 1873 uint16_t val; 1874 #ifdef RUM_DEBUG 1875 int i; 1876 #endif 1877 1878 /* read MAC/BBP type */ 1879 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1880 sc->macbbp_rev = le16toh(val); 1881 1882 /* read MAC address */ 1883 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1884 1885 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1886 val = le16toh(val); 1887 sc->rf_rev = (val >> 11) & 0x1f; 1888 sc->hw_radio = (val >> 10) & 0x1; 1889 sc->rx_ant = (val >> 4) & 0x3; 1890 sc->tx_ant = (val >> 2) & 0x3; 1891 sc->nb_ant = val & 0x3; 1892 1893 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1894 1895 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1896 val = le16toh(val); 1897 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1898 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1899 1900 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1901 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1902 1903 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1904 val = le16toh(val); 1905 if ((val & 0xff) != 0xff) 1906 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1907 1908 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1909 val = le16toh(val); 1910 if ((val & 0xff) != 0xff) 1911 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1912 1913 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1914 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1915 1916 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1917 val = le16toh(val); 1918 if ((val & 0xff) != 0xff) 1919 sc->rffreq = val & 0xff; 1920 1921 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1922 1923 /* read Tx power for all a/b/g channels */ 1924 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1925 /* XXX default Tx power for 802.11a channels */ 1926 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1927 #ifdef RUM_DEBUG 1928 for (i = 0; i < 14; i++) 1929 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1930 #endif 1931 1932 /* read default values for BBP registers */ 1933 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1934 #ifdef RUM_DEBUG 1935 for (i = 0; i < 14; i++) { 1936 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1937 continue; 1938 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1939 sc->bbp_prom[i].val)); 1940 } 1941 #endif 1942 } 1943 1944 static int 1945 rum_bbp_init(struct rum_softc *sc) 1946 { 1947 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1948 unsigned int i, ntries; 1949 uint8_t val; 1950 1951 /* wait for BBP to be ready */ 1952 for (ntries = 0; ntries < 100; ntries++) { 1953 val = rum_bbp_read(sc, 0); 1954 if (val != 0 && val != 0xff) 1955 break; 1956 DELAY(1000); 1957 } 1958 if (ntries == 100) { 1959 printf("%s: timeout waiting for BBP\n", 1960 device_xname(sc->sc_dev)); 1961 return EIO; 1962 } 1963 1964 /* initialize BBP registers to default values */ 1965 for (i = 0; i < N(rum_def_bbp); i++) 1966 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1967 1968 /* write vendor-specific BBP values (from EEPROM) */ 1969 for (i = 0; i < 16; i++) { 1970 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1971 continue; 1972 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1973 } 1974 1975 return 0; 1976 #undef N 1977 } 1978 1979 static int 1980 rum_init(struct ifnet *ifp) 1981 { 1982 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1983 struct rum_softc *sc = ifp->if_softc; 1984 struct ieee80211com *ic = &sc->sc_ic; 1985 struct rum_rx_data *data; 1986 uint32_t tmp; 1987 usbd_status error = 0; 1988 unsigned int i, ntries; 1989 1990 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1991 if (rum_attachhook(sc)) 1992 goto fail; 1993 } 1994 1995 rum_stop(ifp, 0); 1996 1997 /* initialize MAC registers to default values */ 1998 for (i = 0; i < N(rum_def_mac); i++) 1999 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 2000 2001 /* set host ready */ 2002 rum_write(sc, RT2573_MAC_CSR1, 3); 2003 rum_write(sc, RT2573_MAC_CSR1, 0); 2004 2005 /* wait for BBP/RF to wakeup */ 2006 for (ntries = 0; ntries < 1000; ntries++) { 2007 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 2008 break; 2009 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 2010 DELAY(1000); 2011 } 2012 if (ntries == 1000) { 2013 printf("%s: timeout waiting for BBP/RF to wakeup\n", 2014 device_xname(sc->sc_dev)); 2015 goto fail; 2016 } 2017 2018 if ((error = rum_bbp_init(sc)) != 0) 2019 goto fail; 2020 2021 /* select default channel */ 2022 rum_select_band(sc, ic->ic_curchan); 2023 rum_select_antenna(sc); 2024 rum_set_chan(sc, ic->ic_curchan); 2025 2026 /* clear STA registers */ 2027 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2028 2029 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2030 rum_set_macaddr(sc, ic->ic_myaddr); 2031 2032 /* initialize ASIC */ 2033 rum_write(sc, RT2573_MAC_CSR1, 4); 2034 2035 /* 2036 * Allocate xfer for AMRR statistics requests. 2037 */ 2038 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 2039 if (sc->amrr_xfer == NULL) { 2040 printf("%s: could not allocate AMRR xfer\n", 2041 device_xname(sc->sc_dev)); 2042 goto fail; 2043 } 2044 2045 /* 2046 * Open Tx and Rx USB bulk pipes. 2047 */ 2048 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2049 &sc->sc_tx_pipeh); 2050 if (error != 0) { 2051 printf("%s: could not open Tx pipe: %s\n", 2052 device_xname(sc->sc_dev), usbd_errstr(error)); 2053 goto fail; 2054 } 2055 2056 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2057 &sc->sc_rx_pipeh); 2058 if (error != 0) { 2059 printf("%s: could not open Rx pipe: %s\n", 2060 device_xname(sc->sc_dev), usbd_errstr(error)); 2061 goto fail; 2062 } 2063 2064 /* 2065 * Allocate Tx and Rx xfer queues. 2066 */ 2067 error = rum_alloc_tx_list(sc); 2068 if (error != 0) { 2069 printf("%s: could not allocate Tx list\n", 2070 device_xname(sc->sc_dev)); 2071 goto fail; 2072 } 2073 2074 error = rum_alloc_rx_list(sc); 2075 if (error != 0) { 2076 printf("%s: could not allocate Rx list\n", 2077 device_xname(sc->sc_dev)); 2078 goto fail; 2079 } 2080 2081 /* 2082 * Start up the receive pipe. 2083 */ 2084 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2085 data = &sc->rx_data[i]; 2086 2087 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2088 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2089 error = usbd_transfer(data->xfer); 2090 if (error != USBD_NORMAL_COMPLETION && 2091 error != USBD_IN_PROGRESS) { 2092 printf("%s: could not queue Rx transfer\n", 2093 device_xname(sc->sc_dev)); 2094 goto fail; 2095 } 2096 } 2097 2098 /* update Rx filter */ 2099 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2100 2101 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2102 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2103 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2104 RT2573_DROP_ACKCTS; 2105 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2106 tmp |= RT2573_DROP_TODS; 2107 if (!(ifp->if_flags & IFF_PROMISC)) 2108 tmp |= RT2573_DROP_NOT_TO_ME; 2109 } 2110 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2111 2112 ifp->if_flags &= ~IFF_OACTIVE; 2113 ifp->if_flags |= IFF_RUNNING; 2114 2115 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2116 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2117 else 2118 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2119 2120 return 0; 2121 2122 fail: rum_stop(ifp, 1); 2123 return error; 2124 #undef N 2125 } 2126 2127 static void 2128 rum_stop(struct ifnet *ifp, int disable) 2129 { 2130 struct rum_softc *sc = ifp->if_softc; 2131 struct ieee80211com *ic = &sc->sc_ic; 2132 uint32_t tmp; 2133 2134 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2135 2136 sc->sc_tx_timer = 0; 2137 ifp->if_timer = 0; 2138 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2139 2140 /* disable Rx */ 2141 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2142 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2143 2144 /* reset ASIC */ 2145 rum_write(sc, RT2573_MAC_CSR1, 3); 2146 rum_write(sc, RT2573_MAC_CSR1, 0); 2147 2148 if (sc->amrr_xfer != NULL) { 2149 usbd_free_xfer(sc->amrr_xfer); 2150 sc->amrr_xfer = NULL; 2151 } 2152 2153 if (sc->sc_rx_pipeh != NULL) { 2154 usbd_abort_pipe(sc->sc_rx_pipeh); 2155 usbd_close_pipe(sc->sc_rx_pipeh); 2156 sc->sc_rx_pipeh = NULL; 2157 } 2158 2159 if (sc->sc_tx_pipeh != NULL) { 2160 usbd_abort_pipe(sc->sc_tx_pipeh); 2161 usbd_close_pipe(sc->sc_tx_pipeh); 2162 sc->sc_tx_pipeh = NULL; 2163 } 2164 2165 rum_free_rx_list(sc); 2166 rum_free_tx_list(sc); 2167 } 2168 2169 static int 2170 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2171 { 2172 usb_device_request_t req; 2173 uint16_t reg = RT2573_MCU_CODE_BASE; 2174 usbd_status error; 2175 2176 /* copy firmware image into NIC */ 2177 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2178 rum_write(sc, reg, UGETDW(ucode)); 2179 2180 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2181 req.bRequest = RT2573_MCU_CNTL; 2182 USETW(req.wValue, RT2573_MCU_RUN); 2183 USETW(req.wIndex, 0); 2184 USETW(req.wLength, 0); 2185 2186 error = usbd_do_request(sc->sc_udev, &req, NULL); 2187 if (error != 0) { 2188 printf("%s: could not run firmware: %s\n", 2189 device_xname(sc->sc_dev), usbd_errstr(error)); 2190 } 2191 return error; 2192 } 2193 2194 static int 2195 rum_prepare_beacon(struct rum_softc *sc) 2196 { 2197 struct ieee80211com *ic = &sc->sc_ic; 2198 struct rum_tx_desc desc; 2199 struct mbuf *m0; 2200 int rate; 2201 2202 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2203 if (m0 == NULL) { 2204 aprint_error_dev(sc->sc_dev, 2205 "could not allocate beacon frame\n"); 2206 return ENOBUFS; 2207 } 2208 2209 /* send beacons at the lowest available rate */ 2210 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2211 2212 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2213 m0->m_pkthdr.len, rate); 2214 2215 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2216 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2217 2218 /* copy beacon header and payload into NIC memory */ 2219 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2220 m0->m_pkthdr.len); 2221 2222 m_freem(m0); 2223 2224 return 0; 2225 } 2226 2227 static void 2228 rum_newassoc(struct ieee80211_node *ni, int isnew) 2229 { 2230 /* start with lowest Tx rate */ 2231 ni->ni_txrate = 0; 2232 } 2233 2234 static void 2235 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2236 { 2237 int i; 2238 2239 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2240 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2241 2242 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2243 2244 /* set rate to some reasonable initial value */ 2245 for (i = ni->ni_rates.rs_nrates - 1; 2246 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2247 i--); 2248 ni->ni_txrate = i; 2249 2250 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2251 } 2252 2253 static void 2254 rum_amrr_timeout(void *arg) 2255 { 2256 struct rum_softc *sc = arg; 2257 usb_device_request_t req; 2258 2259 /* 2260 * Asynchronously read statistic registers (cleared by read). 2261 */ 2262 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2263 req.bRequest = RT2573_READ_MULTI_MAC; 2264 USETW(req.wValue, 0); 2265 USETW(req.wIndex, RT2573_STA_CSR0); 2266 USETW(req.wLength, sizeof sc->sta); 2267 2268 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2269 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2270 rum_amrr_update); 2271 (void)usbd_transfer(sc->amrr_xfer); 2272 } 2273 2274 static void 2275 rum_amrr_update(struct usbd_xfer *xfer, void *priv, 2276 usbd_status status) 2277 { 2278 struct rum_softc *sc = (struct rum_softc *)priv; 2279 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2280 2281 if (status != USBD_NORMAL_COMPLETION) { 2282 printf("%s: could not retrieve Tx statistics - cancelling " 2283 "automatic rate control\n", device_xname(sc->sc_dev)); 2284 return; 2285 } 2286 2287 /* count TX retry-fail as Tx errors */ 2288 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2289 2290 sc->amn.amn_retrycnt = 2291 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2292 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2293 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2294 2295 sc->amn.amn_txcnt = 2296 sc->amn.amn_retrycnt + 2297 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2298 2299 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2300 2301 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2302 } 2303 2304 static int 2305 rum_activate(device_t self, enum devact act) 2306 { 2307 switch (act) { 2308 case DVACT_DEACTIVATE: 2309 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2310 return 0; 2311 default: 2312 return 0; 2313 } 2314 } 2315 2316 MODULE(MODULE_CLASS_DRIVER, if_rum, "bpf"); 2317 2318 #ifdef _MODULE 2319 #include "ioconf.c" 2320 #endif 2321 2322 static int 2323 if_rum_modcmd(modcmd_t cmd, void *aux) 2324 { 2325 int error = 0; 2326 2327 switch (cmd) { 2328 case MODULE_CMD_INIT: 2329 #ifdef _MODULE 2330 error = config_init_component(cfdriver_ioconf_rum, 2331 cfattach_ioconf_rum, cfdata_ioconf_rum); 2332 #endif 2333 return error; 2334 case MODULE_CMD_FINI: 2335 #ifdef _MODULE 2336 error = config_fini_component(cfdriver_ioconf_rum, 2337 cfattach_ioconf_rum, cfdata_ioconf_rum); 2338 #endif 2339 return error; 2340 default: 2341 return ENOTTY; 2342 } 2343 } 2344
Indexes created Thu Oct 02 01:09:59 GMT 2025