if_rum.c revision 1.45
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.45 2013/01/05 01:30:16 christos 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 1.45 2013/01/05 01:30:16 christos Exp $"); 28 29 #ifdef _KERNEL_OPT 30 #include "opt_usb.h" 31 #endif 32 33 #include <sys/param.h> 34 #include <sys/sockio.h> 35 #include <sys/sysctl.h> 36 #include <sys/mbuf.h> 37 #include <sys/kernel.h> 38 #include <sys/socket.h> 39 #include <sys/systm.h> 40 #include <sys/malloc.h> 41 #include <sys/module.h> 42 #include <sys/conf.h> 43 #include <sys/device.h> 44 45 #include <sys/bus.h> 46 #include <machine/endian.h> 47 #include <sys/intr.h> 48 49 #include <net/bpf.h> 50 #include <net/if.h> 51 #include <net/if_arp.h> 52 #include <net/if_dl.h> 53 #include <net/if_ether.h> 54 #include <net/if_media.h> 55 #include <net/if_types.h> 56 57 #include <netinet/in.h> 58 #include <netinet/in_systm.h> 59 #include <netinet/in_var.h> 60 #include <netinet/ip.h> 61 62 #include <net80211/ieee80211_netbsd.h> 63 #include <net80211/ieee80211_var.h> 64 #include <net80211/ieee80211_amrr.h> 65 #include <net80211/ieee80211_radiotap.h> 66 67 #include <dev/firmload.h> 68 69 #include <dev/usb/usb.h> 70 #include <dev/usb/usbdi.h> 71 #include <dev/usb/usbdi_util.h> 72 #include <dev/usb/usbdevs.h> 73 74 #include <dev/usb/if_rumreg.h> 75 #include <dev/usb/if_rumvar.h> 76 77 #ifdef USB_DEBUG 78 #define RUM_DEBUG 79 #endif 80 81 #ifdef RUM_DEBUG 82 #define DPRINTF(x) do { if (rum_debug) printf x; } while (0) 83 #define DPRINTFN(n, x) do { if (rum_debug >= (n)) printf x; } while (0) 84 int rum_debug = 1; 85 #else 86 #define DPRINTF(x) 87 #define DPRINTFN(n, x) 88 #endif 89 90 /* various supported device vendors/products */ 91 static const struct usb_devno rum_devs[] = { 92 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_HWU54DM }, 93 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_2 }, 94 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_3 }, 95 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_4 }, 96 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_WUG2700 }, 97 { USB_VENDOR_AMIT, USB_PRODUCT_AMIT_CGWLUSB2GO }, 98 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_2 }, 99 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_3 }, 100 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 101 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 102 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050C }, 103 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB200 }, 104 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 105 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GR }, 106 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 107 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_RT2573 }, 108 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GL }, 109 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GPX }, 110 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 111 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 112 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 113 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 114 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA110 }, 115 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA111 }, 116 { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7318 }, 117 { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7618 }, 118 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 119 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWI05GS }, 120 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 121 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 122 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254LB }, 123 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254V2AP }, 124 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 125 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_G54HP }, 126 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, 127 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HG }, 128 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_WLIUCG }, 129 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 130 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 131 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 132 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_4 }, 133 { USB_VENDOR_NOVATECH, USB_PRODUCT_NOVATECH_RT2573 }, 134 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54HP }, 135 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 136 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 137 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 138 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 139 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_3 }, 140 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 141 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 142 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 143 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 144 { USB_VENDOR_SPARKLAN, USB_PRODUCT_SPARKLAN_RT2573 }, 145 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 }, 146 { USB_VENDOR_ZYXEL, USB_PRODUCT_ZYXEL_RT2573 } 147 }; 148 149 static int rum_attachhook(void *); 150 static int rum_alloc_tx_list(struct rum_softc *); 151 static void rum_free_tx_list(struct rum_softc *); 152 static int rum_alloc_rx_list(struct rum_softc *); 153 static void rum_free_rx_list(struct rum_softc *); 154 static int rum_media_change(struct ifnet *); 155 static void rum_next_scan(void *); 156 static void rum_task(void *); 157 static int rum_newstate(struct ieee80211com *, 158 enum ieee80211_state, int); 159 static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 160 usbd_status); 161 static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 162 usbd_status); 163 static uint8_t rum_rxrate(const struct rum_rx_desc *); 164 static int rum_ack_rate(struct ieee80211com *, int); 165 static uint16_t rum_txtime(int, int, uint32_t); 166 static uint8_t rum_plcp_signal(int); 167 static void rum_setup_tx_desc(struct rum_softc *, 168 struct rum_tx_desc *, uint32_t, uint16_t, int, 169 int); 170 static int rum_tx_data(struct rum_softc *, struct mbuf *, 171 struct ieee80211_node *); 172 static void rum_start(struct ifnet *); 173 static void rum_watchdog(struct ifnet *); 174 static int rum_ioctl(struct ifnet *, u_long, void *); 175 static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 176 int); 177 static uint32_t rum_read(struct rum_softc *, uint16_t); 178 static void rum_read_multi(struct rum_softc *, uint16_t, void *, 179 int); 180 static void rum_write(struct rum_softc *, uint16_t, uint32_t); 181 static void rum_write_multi(struct rum_softc *, uint16_t, void *, 182 size_t); 183 static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 184 static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 185 static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 186 static void rum_select_antenna(struct rum_softc *); 187 static void rum_enable_mrr(struct rum_softc *); 188 static void rum_set_txpreamble(struct rum_softc *); 189 static void rum_set_basicrates(struct rum_softc *); 190 static void rum_select_band(struct rum_softc *, 191 struct ieee80211_channel *); 192 static void rum_set_chan(struct rum_softc *, 193 struct ieee80211_channel *); 194 static void rum_enable_tsf_sync(struct rum_softc *); 195 static void rum_update_slot(struct rum_softc *); 196 static void rum_set_bssid(struct rum_softc *, const uint8_t *); 197 static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 198 static void rum_update_promisc(struct rum_softc *); 199 static const char *rum_get_rf(int); 200 static void rum_read_eeprom(struct rum_softc *); 201 static int rum_bbp_init(struct rum_softc *); 202 static int rum_init(struct ifnet *); 203 static void rum_stop(struct ifnet *, int); 204 static int rum_load_microcode(struct rum_softc *, const u_char *, 205 size_t); 206 static int rum_prepare_beacon(struct rum_softc *); 207 static void rum_newassoc(struct ieee80211_node *, int); 208 static void rum_amrr_start(struct rum_softc *, 209 struct ieee80211_node *); 210 static void rum_amrr_timeout(void *); 211 static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 212 usbd_status status); 213 214 /* 215 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 216 */ 217 static const struct ieee80211_rateset rum_rateset_11a = 218 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 219 220 static const struct ieee80211_rateset rum_rateset_11b = 221 { 4, { 2, 4, 11, 22 } }; 222 223 static const struct ieee80211_rateset rum_rateset_11g = 224 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 225 226 static const struct { 227 uint32_t reg; 228 uint32_t val; 229 } rum_def_mac[] = { 230 RT2573_DEF_MAC 231 }; 232 233 static const struct { 234 uint8_t reg; 235 uint8_t val; 236 } rum_def_bbp[] = { 237 RT2573_DEF_BBP 238 }; 239 240 static const struct rfprog { 241 uint8_t chan; 242 uint32_t r1, r2, r3, r4; 243 } rum_rf5226[] = { 244 RT2573_RF5226 245 }, rum_rf5225[] = { 246 RT2573_RF5225 247 }; 248 249 static int rum_match(device_t, cfdata_t, void *); 250 static void rum_attach(device_t, device_t, void *); 251 static int rum_detach(device_t, int); 252 static int rum_activate(device_t, enum devact); 253 extern struct cfdriver rum_cd; 254 CFATTACH_DECL_NEW(rum, sizeof(struct rum_softc), rum_match, rum_attach, 255 rum_detach, rum_activate); 256 257 static int 258 rum_match(device_t parent, cfdata_t match, void *aux) 259 { 260 struct usb_attach_arg *uaa = aux; 261 262 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 263 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 264 } 265 266 static int 267 rum_attachhook(void *xsc) 268 { 269 struct rum_softc *sc = xsc; 270 firmware_handle_t fwh; 271 const char *name = "rum-rt2573"; 272 u_char *ucode; 273 size_t size; 274 int error; 275 276 if ((error = firmware_open("rum", name, &fwh)) != 0) { 277 printf("%s: failed loadfirmware of file %s (error %d)\n", 278 device_xname(sc->sc_dev), name, error); 279 return error; 280 } 281 size = firmware_get_size(fwh); 282 ucode = firmware_malloc(size); 283 if (ucode == NULL) { 284 printf("%s: failed to allocate firmware memory\n", 285 device_xname(sc->sc_dev)); 286 firmware_close(fwh); 287 return ENOMEM; 288 } 289 error = firmware_read(fwh, 0, ucode, size); 290 firmware_close(fwh); 291 if (error != 0) { 292 printf("%s: failed to read firmware (error %d)\n", 293 device_xname(sc->sc_dev), error); 294 firmware_free(ucode, 0); 295 return error; 296 } 297 298 if (rum_load_microcode(sc, ucode, size) != 0) { 299 printf("%s: could not load 8051 microcode\n", 300 device_xname(sc->sc_dev)); 301 firmware_free(ucode, 0); 302 return ENXIO; 303 } 304 305 firmware_free(ucode, 0); 306 sc->sc_flags |= RT2573_FWLOADED; 307 308 return 0; 309 } 310 311 static void 312 rum_attach(device_t parent, device_t self, void *aux) 313 { 314 struct rum_softc *sc = device_private(self); 315 struct usb_attach_arg *uaa = aux; 316 struct ieee80211com *ic = &sc->sc_ic; 317 struct ifnet *ifp = &sc->sc_if; 318 usb_interface_descriptor_t *id; 319 usb_endpoint_descriptor_t *ed; 320 usbd_status error; 321 char *devinfop; 322 int i, ntries; 323 uint32_t tmp; 324 325 sc->sc_dev = self; 326 sc->sc_udev = uaa->device; 327 sc->sc_flags = 0; 328 329 aprint_naive("\n"); 330 aprint_normal("\n"); 331 332 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 333 aprint_normal_dev(self, "%s\n", devinfop); 334 usbd_devinfo_free(devinfop); 335 336 error = usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0); 337 if (error != 0) { 338 aprint_error_dev(self, "failed to set configuration" 339 ", err=%s\n", usbd_errstr(error)); 340 return; 341 } 342 343 /* get the first interface handle */ 344 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 345 &sc->sc_iface); 346 if (error != 0) { 347 aprint_error_dev(self, "could not get interface handle\n"); 348 return; 349 } 350 351 /* 352 * Find endpoints. 353 */ 354 id = usbd_get_interface_descriptor(sc->sc_iface); 355 356 sc->sc_rx_no = sc->sc_tx_no = -1; 357 for (i = 0; i < id->bNumEndpoints; i++) { 358 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 359 if (ed == NULL) { 360 aprint_error_dev(self, 361 "no endpoint descriptor for iface %d\n", i); 362 return; 363 } 364 365 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 366 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 367 sc->sc_rx_no = ed->bEndpointAddress; 368 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 369 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 370 sc->sc_tx_no = ed->bEndpointAddress; 371 } 372 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 373 aprint_error_dev(self, "missing endpoint\n"); 374 return; 375 } 376 377 usb_init_task(&sc->sc_task, rum_task, sc); 378 callout_init(&sc->sc_scan_ch, 0); 379 380 sc->amrr.amrr_min_success_threshold = 1; 381 sc->amrr.amrr_max_success_threshold = 10; 382 callout_init(&sc->sc_amrr_ch, 0); 383 384 /* retrieve RT2573 rev. no */ 385 for (ntries = 0; ntries < 1000; ntries++) { 386 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 387 break; 388 DELAY(1000); 389 } 390 if (ntries == 1000) { 391 aprint_error_dev(self, "timeout waiting for chip to settle\n"); 392 return; 393 } 394 395 /* retrieve MAC address and various other things from EEPROM */ 396 rum_read_eeprom(sc); 397 398 aprint_normal_dev(self, 399 "MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 400 sc->macbbp_rev, tmp, 401 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 402 403 ic->ic_ifp = ifp; 404 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 405 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 406 ic->ic_state = IEEE80211_S_INIT; 407 408 /* set device capabilities */ 409 ic->ic_caps = 410 IEEE80211_C_IBSS | /* IBSS mode supported */ 411 IEEE80211_C_MONITOR | /* monitor mode supported */ 412 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 413 IEEE80211_C_TXPMGT | /* tx power management */ 414 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 415 IEEE80211_C_SHSLOT | /* short slot time supported */ 416 IEEE80211_C_WPA; /* 802.11i */ 417 418 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 419 /* set supported .11a rates */ 420 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 421 422 /* set supported .11a channels */ 423 for (i = 34; i <= 46; i += 4) { 424 ic->ic_channels[i].ic_freq = 425 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 426 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 427 } 428 for (i = 36; i <= 64; i += 4) { 429 ic->ic_channels[i].ic_freq = 430 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 431 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 432 } 433 for (i = 100; i <= 140; i += 4) { 434 ic->ic_channels[i].ic_freq = 435 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 436 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 437 } 438 for (i = 149; i <= 165; i += 4) { 439 ic->ic_channels[i].ic_freq = 440 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 441 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 442 } 443 } 444 445 /* set supported .11b and .11g rates */ 446 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 447 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 448 449 /* set supported .11b and .11g channels (1 through 14) */ 450 for (i = 1; i <= 14; i++) { 451 ic->ic_channels[i].ic_freq = 452 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 453 ic->ic_channels[i].ic_flags = 454 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 455 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 456 } 457 458 ifp->if_softc = sc; 459 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 460 ifp->if_init = rum_init; 461 ifp->if_ioctl = rum_ioctl; 462 ifp->if_start = rum_start; 463 ifp->if_watchdog = rum_watchdog; 464 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 465 IFQ_SET_READY(&ifp->if_snd); 466 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 467 468 if_attach(ifp); 469 ieee80211_ifattach(ic); 470 ic->ic_newassoc = rum_newassoc; 471 472 /* override state transition machine */ 473 sc->sc_newstate = ic->ic_newstate; 474 ic->ic_newstate = rum_newstate; 475 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 476 477 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 478 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 479 &sc->sc_drvbpf); 480 481 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 482 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 483 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 484 485 sc->sc_txtap_len = sizeof sc->sc_txtapu; 486 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 487 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 488 489 ieee80211_announce(ic); 490 491 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 492 sc->sc_dev); 493 494 return; 495 } 496 497 static int 498 rum_detach(device_t self, int flags) 499 { 500 struct rum_softc *sc = device_private(self); 501 struct ieee80211com *ic = &sc->sc_ic; 502 struct ifnet *ifp = &sc->sc_if; 503 int s; 504 505 if (!ifp->if_softc) 506 return 0; 507 508 s = splusb(); 509 510 rum_stop(ifp, 1); 511 usb_rem_task(sc->sc_udev, &sc->sc_task); 512 callout_stop(&sc->sc_scan_ch); 513 callout_stop(&sc->sc_amrr_ch); 514 515 if (sc->amrr_xfer != NULL) { 516 usbd_free_xfer(sc->amrr_xfer); 517 sc->amrr_xfer = NULL; 518 } 519 520 if (sc->sc_rx_pipeh != NULL) { 521 usbd_abort_pipe(sc->sc_rx_pipeh); 522 usbd_close_pipe(sc->sc_rx_pipeh); 523 } 524 525 if (sc->sc_tx_pipeh != NULL) { 526 usbd_abort_pipe(sc->sc_tx_pipeh); 527 usbd_close_pipe(sc->sc_tx_pipeh); 528 } 529 530 bpf_detach(ifp); 531 ieee80211_ifdetach(ic); /* free all nodes */ 532 if_detach(ifp); 533 534 splx(s); 535 536 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 537 538 return 0; 539 } 540 541 static int 542 rum_alloc_tx_list(struct rum_softc *sc) 543 { 544 struct rum_tx_data *data; 545 int i, error; 546 547 sc->tx_cur = sc->tx_queued = 0; 548 549 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 550 data = &sc->tx_data[i]; 551 552 data->sc = sc; 553 554 data->xfer = usbd_alloc_xfer(sc->sc_udev); 555 if (data->xfer == NULL) { 556 printf("%s: could not allocate tx xfer\n", 557 device_xname(sc->sc_dev)); 558 error = ENOMEM; 559 goto fail; 560 } 561 562 data->buf = usbd_alloc_buffer(data->xfer, 563 RT2573_TX_DESC_SIZE + IEEE80211_MAX_LEN); 564 if (data->buf == NULL) { 565 printf("%s: could not allocate tx buffer\n", 566 device_xname(sc->sc_dev)); 567 error = ENOMEM; 568 goto fail; 569 } 570 571 /* clean Tx descriptor */ 572 memset(data->buf, 0, RT2573_TX_DESC_SIZE); 573 } 574 575 return 0; 576 577 fail: rum_free_tx_list(sc); 578 return error; 579 } 580 581 static void 582 rum_free_tx_list(struct rum_softc *sc) 583 { 584 struct rum_tx_data *data; 585 int i; 586 587 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 588 data = &sc->tx_data[i]; 589 590 if (data->xfer != NULL) { 591 usbd_free_xfer(data->xfer); 592 data->xfer = NULL; 593 } 594 595 if (data->ni != NULL) { 596 ieee80211_free_node(data->ni); 597 data->ni = NULL; 598 } 599 } 600 } 601 602 static int 603 rum_alloc_rx_list(struct rum_softc *sc) 604 { 605 struct rum_rx_data *data; 606 int i, error; 607 608 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 609 data = &sc->rx_data[i]; 610 611 data->sc = sc; 612 613 data->xfer = usbd_alloc_xfer(sc->sc_udev); 614 if (data->xfer == NULL) { 615 printf("%s: could not allocate rx xfer\n", 616 device_xname(sc->sc_dev)); 617 error = ENOMEM; 618 goto fail; 619 } 620 621 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 622 printf("%s: could not allocate rx buffer\n", 623 device_xname(sc->sc_dev)); 624 error = ENOMEM; 625 goto fail; 626 } 627 628 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 629 if (data->m == NULL) { 630 printf("%s: could not allocate rx mbuf\n", 631 device_xname(sc->sc_dev)); 632 error = ENOMEM; 633 goto fail; 634 } 635 636 MCLGET(data->m, M_DONTWAIT); 637 if (!(data->m->m_flags & M_EXT)) { 638 printf("%s: could not allocate rx mbuf cluster\n", 639 device_xname(sc->sc_dev)); 640 error = ENOMEM; 641 goto fail; 642 } 643 644 data->buf = mtod(data->m, uint8_t *); 645 } 646 647 return 0; 648 649 fail: rum_free_rx_list(sc); 650 return error; 651 } 652 653 static void 654 rum_free_rx_list(struct rum_softc *sc) 655 { 656 struct rum_rx_data *data; 657 int i; 658 659 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 660 data = &sc->rx_data[i]; 661 662 if (data->xfer != NULL) { 663 usbd_free_xfer(data->xfer); 664 data->xfer = NULL; 665 } 666 667 if (data->m != NULL) { 668 m_freem(data->m); 669 data->m = NULL; 670 } 671 } 672 } 673 674 static int 675 rum_media_change(struct ifnet *ifp) 676 { 677 int error; 678 679 error = ieee80211_media_change(ifp); 680 if (error != ENETRESET) 681 return error; 682 683 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 684 rum_init(ifp); 685 686 return 0; 687 } 688 689 /* 690 * This function is called periodically (every 200ms) during scanning to 691 * switch from one channel to another. 692 */ 693 static void 694 rum_next_scan(void *arg) 695 { 696 struct rum_softc *sc = arg; 697 struct ieee80211com *ic = &sc->sc_ic; 698 int s; 699 700 s = splnet(); 701 if (ic->ic_state == IEEE80211_S_SCAN) 702 ieee80211_next_scan(ic); 703 splx(s); 704 } 705 706 static void 707 rum_task(void *arg) 708 { 709 struct rum_softc *sc = arg; 710 struct ieee80211com *ic = &sc->sc_ic; 711 enum ieee80211_state ostate; 712 struct ieee80211_node *ni; 713 uint32_t tmp; 714 715 ostate = ic->ic_state; 716 717 switch (sc->sc_state) { 718 case IEEE80211_S_INIT: 719 if (ostate == IEEE80211_S_RUN) { 720 /* abort TSF synchronization */ 721 tmp = rum_read(sc, RT2573_TXRX_CSR9); 722 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 723 } 724 break; 725 726 case IEEE80211_S_SCAN: 727 rum_set_chan(sc, ic->ic_curchan); 728 callout_reset(&sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 729 break; 730 731 case IEEE80211_S_AUTH: 732 rum_set_chan(sc, ic->ic_curchan); 733 break; 734 735 case IEEE80211_S_ASSOC: 736 rum_set_chan(sc, ic->ic_curchan); 737 break; 738 739 case IEEE80211_S_RUN: 740 rum_set_chan(sc, ic->ic_curchan); 741 742 ni = ic->ic_bss; 743 744 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 745 rum_update_slot(sc); 746 rum_enable_mrr(sc); 747 rum_set_txpreamble(sc); 748 rum_set_basicrates(sc); 749 rum_set_bssid(sc, ni->ni_bssid); 750 } 751 752 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 753 ic->ic_opmode == IEEE80211_M_IBSS) 754 rum_prepare_beacon(sc); 755 756 if (ic->ic_opmode != IEEE80211_M_MONITOR) 757 rum_enable_tsf_sync(sc); 758 759 if (ic->ic_opmode == IEEE80211_M_STA) { 760 /* fake a join to init the tx rate */ 761 rum_newassoc(ic->ic_bss, 1); 762 763 /* enable automatic rate adaptation in STA mode */ 764 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 765 rum_amrr_start(sc, ni); 766 } 767 768 break; 769 } 770 771 sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); 772 } 773 774 static int 775 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 776 { 777 struct rum_softc *sc = ic->ic_ifp->if_softc; 778 779 usb_rem_task(sc->sc_udev, &sc->sc_task); 780 callout_stop(&sc->sc_scan_ch); 781 callout_stop(&sc->sc_amrr_ch); 782 783 /* do it in a process context */ 784 sc->sc_state = nstate; 785 sc->sc_arg = arg; 786 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 787 788 return 0; 789 } 790 791 /* quickly determine if a given rate is CCK or OFDM */ 792 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 793 794 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 795 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 796 797 static void 798 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 799 { 800 struct rum_tx_data *data = priv; 801 struct rum_softc *sc = data->sc; 802 struct ifnet *ifp = &sc->sc_if; 803 int s; 804 805 if (status != USBD_NORMAL_COMPLETION) { 806 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 807 return; 808 809 printf("%s: could not transmit buffer: %s\n", 810 device_xname(sc->sc_dev), usbd_errstr(status)); 811 812 if (status == USBD_STALLED) 813 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 814 815 ifp->if_oerrors++; 816 return; 817 } 818 819 s = splnet(); 820 821 ieee80211_free_node(data->ni); 822 data->ni = NULL; 823 824 sc->tx_queued--; 825 ifp->if_opackets++; 826 827 DPRINTFN(10, ("tx done\n")); 828 829 sc->sc_tx_timer = 0; 830 ifp->if_flags &= ~IFF_OACTIVE; 831 rum_start(ifp); 832 833 splx(s); 834 } 835 836 static void 837 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 838 { 839 struct rum_rx_data *data = priv; 840 struct rum_softc *sc = data->sc; 841 struct ieee80211com *ic = &sc->sc_ic; 842 struct ifnet *ifp = &sc->sc_if; 843 struct rum_rx_desc *desc; 844 struct ieee80211_frame *wh; 845 struct ieee80211_node *ni; 846 struct mbuf *mnew, *m; 847 int s, len; 848 849 if (status != USBD_NORMAL_COMPLETION) { 850 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 851 return; 852 853 if (status == USBD_STALLED) 854 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 855 goto skip; 856 } 857 858 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 859 860 if (len < (int)(RT2573_RX_DESC_SIZE + 861 sizeof(struct ieee80211_frame_min))) { 862 DPRINTF(("%s: xfer too short %d\n", device_xname(sc->sc_dev), 863 len)); 864 ifp->if_ierrors++; 865 goto skip; 866 } 867 868 desc = (struct rum_rx_desc *)data->buf; 869 870 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 871 /* 872 * This should not happen since we did not request to receive 873 * those frames when we filled RT2573_TXRX_CSR0. 874 */ 875 DPRINTFN(5, ("CRC error\n")); 876 ifp->if_ierrors++; 877 goto skip; 878 } 879 880 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 881 if (mnew == NULL) { 882 printf("%s: could not allocate rx mbuf\n", 883 device_xname(sc->sc_dev)); 884 ifp->if_ierrors++; 885 goto skip; 886 } 887 888 MCLGET(mnew, M_DONTWAIT); 889 if (!(mnew->m_flags & M_EXT)) { 890 printf("%s: could not allocate rx mbuf cluster\n", 891 device_xname(sc->sc_dev)); 892 m_freem(mnew); 893 ifp->if_ierrors++; 894 goto skip; 895 } 896 897 m = data->m; 898 data->m = mnew; 899 data->buf = mtod(data->m, uint8_t *); 900 901 /* finalize mbuf */ 902 m->m_pkthdr.rcvif = ifp; 903 m->m_data = (void *)(desc + 1); 904 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 905 906 s = splnet(); 907 908 if (sc->sc_drvbpf != NULL) { 909 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 910 911 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 912 tap->wr_rate = rum_rxrate(desc); 913 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 914 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 915 tap->wr_antenna = sc->rx_ant; 916 tap->wr_antsignal = desc->rssi; 917 918 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 919 } 920 921 wh = mtod(m, struct ieee80211_frame *); 922 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 923 924 /* send the frame to the 802.11 layer */ 925 ieee80211_input(ic, m, ni, desc->rssi, 0); 926 927 /* node is no longer needed */ 928 ieee80211_free_node(ni); 929 930 splx(s); 931 932 DPRINTFN(15, ("rx done\n")); 933 934 skip: /* setup a new transfer */ 935 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 936 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 937 usbd_transfer(xfer); 938 } 939 940 /* 941 * This function is only used by the Rx radiotap code. It returns the rate at 942 * which a given frame was received. 943 */ 944 static uint8_t 945 rum_rxrate(const struct rum_rx_desc *desc) 946 { 947 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 948 /* reverse function of rum_plcp_signal */ 949 switch (desc->rate) { 950 case 0xb: return 12; 951 case 0xf: return 18; 952 case 0xa: return 24; 953 case 0xe: return 36; 954 case 0x9: return 48; 955 case 0xd: return 72; 956 case 0x8: return 96; 957 case 0xc: return 108; 958 } 959 } else { 960 if (desc->rate == 10) 961 return 2; 962 if (desc->rate == 20) 963 return 4; 964 if (desc->rate == 55) 965 return 11; 966 if (desc->rate == 110) 967 return 22; 968 } 969 return 2; /* should not get there */ 970 } 971 972 /* 973 * Return the expected ack rate for a frame transmitted at rate `rate'. 974 * XXX: this should depend on the destination node basic rate set. 975 */ 976 static int 977 rum_ack_rate(struct ieee80211com *ic, int rate) 978 { 979 switch (rate) { 980 /* CCK rates */ 981 case 2: 982 return 2; 983 case 4: 984 case 11: 985 case 22: 986 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 987 988 /* OFDM rates */ 989 case 12: 990 case 18: 991 return 12; 992 case 24: 993 case 36: 994 return 24; 995 case 48: 996 case 72: 997 case 96: 998 case 108: 999 return 48; 1000 } 1001 1002 /* default to 1Mbps */ 1003 return 2; 1004 } 1005 1006 /* 1007 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 1008 * The function automatically determines the operating mode depending on the 1009 * given rate. `flags' indicates whether short preamble is in use or not. 1010 */ 1011 static uint16_t 1012 rum_txtime(int len, int rate, uint32_t flags) 1013 { 1014 uint16_t txtime; 1015 1016 if (RUM_RATE_IS_OFDM(rate)) { 1017 /* IEEE Std 802.11a-1999, pp. 37 */ 1018 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 1019 txtime = 16 + 4 + 4 * txtime + 6; 1020 } else { 1021 /* IEEE Std 802.11b-1999, pp. 28 */ 1022 txtime = (16 * len + rate - 1) / rate; 1023 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1024 txtime += 72 + 24; 1025 else 1026 txtime += 144 + 48; 1027 } 1028 return txtime; 1029 } 1030 1031 static uint8_t 1032 rum_plcp_signal(int rate) 1033 { 1034 switch (rate) { 1035 /* CCK rates (returned values are device-dependent) */ 1036 case 2: return 0x0; 1037 case 4: return 0x1; 1038 case 11: return 0x2; 1039 case 22: return 0x3; 1040 1041 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1042 case 12: return 0xb; 1043 case 18: return 0xf; 1044 case 24: return 0xa; 1045 case 36: return 0xe; 1046 case 48: return 0x9; 1047 case 72: return 0xd; 1048 case 96: return 0x8; 1049 case 108: return 0xc; 1050 1051 /* unsupported rates (should not get there) */ 1052 default: return 0xff; 1053 } 1054 } 1055 1056 static void 1057 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1058 uint32_t flags, uint16_t xflags, int len, int rate) 1059 { 1060 struct ieee80211com *ic = &sc->sc_ic; 1061 uint16_t plcp_length; 1062 int remainder; 1063 1064 desc->flags = htole32(flags); 1065 desc->flags |= htole32(RT2573_TX_VALID); 1066 desc->flags |= htole32(len << 16); 1067 1068 desc->xflags = htole16(xflags); 1069 1070 desc->wme = htole16( 1071 RT2573_QID(0) | 1072 RT2573_AIFSN(2) | 1073 RT2573_LOGCWMIN(4) | 1074 RT2573_LOGCWMAX(10)); 1075 1076 /* setup PLCP fields */ 1077 desc->plcp_signal = rum_plcp_signal(rate); 1078 desc->plcp_service = 4; 1079 1080 len += IEEE80211_CRC_LEN; 1081 if (RUM_RATE_IS_OFDM(rate)) { 1082 desc->flags |= htole32(RT2573_TX_OFDM); 1083 1084 plcp_length = len & 0xfff; 1085 desc->plcp_length_hi = plcp_length >> 6; 1086 desc->plcp_length_lo = plcp_length & 0x3f; 1087 } else { 1088 plcp_length = (16 * len + rate - 1) / rate; 1089 if (rate == 22) { 1090 remainder = (16 * len) % 22; 1091 if (remainder != 0 && remainder < 7) 1092 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1093 } 1094 desc->plcp_length_hi = plcp_length >> 8; 1095 desc->plcp_length_lo = plcp_length & 0xff; 1096 1097 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1098 desc->plcp_signal |= 0x08; 1099 } 1100 } 1101 1102 #define RUM_TX_TIMEOUT 5000 1103 1104 static int 1105 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1106 { 1107 struct ieee80211com *ic = &sc->sc_ic; 1108 struct rum_tx_desc *desc; 1109 struct rum_tx_data *data; 1110 struct ieee80211_frame *wh; 1111 struct ieee80211_key *k; 1112 uint32_t flags = 0; 1113 uint16_t dur; 1114 usbd_status error; 1115 int rate, xferlen, pktlen, needrts = 0, needcts = 0; 1116 1117 wh = mtod(m0, struct ieee80211_frame *); 1118 1119 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1120 k = ieee80211_crypto_encap(ic, ni, m0); 1121 if (k == NULL) { 1122 m_freem(m0); 1123 return ENOBUFS; 1124 } 1125 1126 /* packet header may have moved, reset our local pointer */ 1127 wh = mtod(m0, struct ieee80211_frame *); 1128 } 1129 1130 /* compute actual packet length (including CRC and crypto overhead) */ 1131 pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN; 1132 1133 /* pickup a rate */ 1134 if (IEEE80211_IS_MULTICAST(wh->i_addr1) || 1135 ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1136 IEEE80211_FC0_TYPE_MGT)) { 1137 /* mgmt/multicast frames are sent at the lowest avail. rate */ 1138 rate = ni->ni_rates.rs_rates[0]; 1139 } else if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 1140 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1141 } else 1142 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1143 if (rate == 0) 1144 rate = 2; /* XXX should not happen */ 1145 rate &= IEEE80211_RATE_VAL; 1146 1147 /* check if RTS/CTS or CTS-to-self protection must be used */ 1148 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1149 /* multicast frames are not sent at OFDM rates in 802.11b/g */ 1150 if (pktlen > ic->ic_rtsthreshold) { 1151 needrts = 1; /* RTS/CTS based on frame length */ 1152 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1153 RUM_RATE_IS_OFDM(rate)) { 1154 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 1155 needcts = 1; /* CTS-to-self */ 1156 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 1157 needrts = 1; /* RTS/CTS */ 1158 } 1159 } 1160 if (needrts || needcts) { 1161 struct mbuf *mprot; 1162 int protrate, ackrate; 1163 1164 protrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1165 ackrate = rum_ack_rate(ic, rate); 1166 1167 dur = rum_txtime(pktlen, rate, ic->ic_flags) + 1168 rum_txtime(RUM_ACK_SIZE, ackrate, ic->ic_flags) + 1169 2 * sc->sifs; 1170 if (needrts) { 1171 dur += rum_txtime(RUM_CTS_SIZE, rum_ack_rate(ic, 1172 protrate), ic->ic_flags) + sc->sifs; 1173 mprot = ieee80211_get_rts(ic, wh, dur); 1174 } else { 1175 mprot = ieee80211_get_cts_to_self(ic, dur); 1176 } 1177 if (mprot == NULL) { 1178 aprint_error_dev(sc->sc_dev, 1179 "couldn't allocate protection frame\n"); 1180 m_freem(m0); 1181 return ENOBUFS; 1182 } 1183 1184 data = &sc->tx_data[sc->tx_cur]; 1185 desc = (struct rum_tx_desc *)data->buf; 1186 1187 /* avoid multiple free() of the same node for each fragment */ 1188 data->ni = ieee80211_ref_node(ni); 1189 1190 m_copydata(mprot, 0, mprot->m_pkthdr.len, 1191 data->buf + RT2573_TX_DESC_SIZE); 1192 rum_setup_tx_desc(sc, desc, 1193 (needrts ? RT2573_TX_NEED_ACK : 0) | RT2573_TX_MORE_FRAG, 1194 0, mprot->m_pkthdr.len, protrate); 1195 1196 /* no roundup necessary here */ 1197 xferlen = RT2573_TX_DESC_SIZE + mprot->m_pkthdr.len; 1198 1199 /* XXX may want to pass the protection frame to BPF */ 1200 1201 /* mbuf is no longer needed */ 1202 m_freem(mprot); 1203 1204 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, 1205 xferlen, USBD_FORCE_SHORT_XFER | USBD_NO_COPY, 1206 RUM_TX_TIMEOUT, rum_txeof); 1207 error = usbd_transfer(data->xfer); 1208 if (error != USBD_NORMAL_COMPLETION && 1209 error != USBD_IN_PROGRESS) { 1210 m_freem(m0); 1211 return error; 1212 } 1213 1214 sc->tx_queued++; 1215 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1216 1217 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1218 } 1219 1220 data = &sc->tx_data[sc->tx_cur]; 1221 desc = (struct rum_tx_desc *)data->buf; 1222 1223 data->ni = ni; 1224 1225 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1226 flags |= RT2573_TX_NEED_ACK; 1227 1228 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1229 ic->ic_flags) + sc->sifs; 1230 *(uint16_t *)wh->i_dur = htole16(dur); 1231 1232 /* tell hardware to set timestamp in probe responses */ 1233 if ((wh->i_fc[0] & 1234 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1235 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1236 flags |= RT2573_TX_TIMESTAMP; 1237 } 1238 1239 if (sc->sc_drvbpf != NULL) { 1240 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1241 1242 tap->wt_flags = 0; 1243 tap->wt_rate = rate; 1244 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1245 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1246 tap->wt_antenna = sc->tx_ant; 1247 1248 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1249 } 1250 1251 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1252 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1253 1254 /* align end on a 4-bytes boundary */ 1255 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1256 1257 /* 1258 * No space left in the last URB to store the extra 4 bytes, force 1259 * sending of another URB. 1260 */ 1261 if ((xferlen % 64) == 0) 1262 xferlen += 4; 1263 1264 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1265 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1266 rate, xferlen)); 1267 1268 /* mbuf is no longer needed */ 1269 m_freem(m0); 1270 1271 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1272 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1273 error = usbd_transfer(data->xfer); 1274 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1275 return error; 1276 1277 sc->tx_queued++; 1278 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1279 1280 return 0; 1281 } 1282 1283 static void 1284 rum_start(struct ifnet *ifp) 1285 { 1286 struct rum_softc *sc = ifp->if_softc; 1287 struct ieee80211com *ic = &sc->sc_ic; 1288 struct ether_header *eh; 1289 struct ieee80211_node *ni; 1290 struct mbuf *m0; 1291 1292 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1293 return; 1294 1295 for (;;) { 1296 IF_POLL(&ic->ic_mgtq, m0); 1297 if (m0 != NULL) { 1298 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1299 ifp->if_flags |= IFF_OACTIVE; 1300 break; 1301 } 1302 IF_DEQUEUE(&ic->ic_mgtq, m0); 1303 1304 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1305 m0->m_pkthdr.rcvif = NULL; 1306 bpf_mtap3(ic->ic_rawbpf, m0); 1307 if (rum_tx_data(sc, m0, ni) != 0) 1308 break; 1309 1310 } else { 1311 if (ic->ic_state != IEEE80211_S_RUN) 1312 break; 1313 IFQ_POLL(&ifp->if_snd, m0); 1314 if (m0 == NULL) 1315 break; 1316 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1317 ifp->if_flags |= IFF_OACTIVE; 1318 break; 1319 } 1320 IFQ_DEQUEUE(&ifp->if_snd, m0); 1321 if (m0->m_len < (int)sizeof(struct ether_header) && 1322 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1323 continue; 1324 1325 eh = mtod(m0, struct ether_header *); 1326 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1327 if (ni == NULL) { 1328 m_freem(m0); 1329 continue; 1330 } 1331 bpf_mtap(ifp, m0); 1332 m0 = ieee80211_encap(ic, m0, ni); 1333 if (m0 == NULL) { 1334 ieee80211_free_node(ni); 1335 continue; 1336 } 1337 bpf_mtap3(ic->ic_rawbpf, m0); 1338 if (rum_tx_data(sc, m0, ni) != 0) { 1339 ieee80211_free_node(ni); 1340 ifp->if_oerrors++; 1341 break; 1342 } 1343 } 1344 1345 sc->sc_tx_timer = 5; 1346 ifp->if_timer = 1; 1347 } 1348 } 1349 1350 static void 1351 rum_watchdog(struct ifnet *ifp) 1352 { 1353 struct rum_softc *sc = ifp->if_softc; 1354 struct ieee80211com *ic = &sc->sc_ic; 1355 1356 ifp->if_timer = 0; 1357 1358 if (sc->sc_tx_timer > 0) { 1359 if (--sc->sc_tx_timer == 0) { 1360 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1361 /*rum_init(ifp); XXX needs a process context! */ 1362 ifp->if_oerrors++; 1363 return; 1364 } 1365 ifp->if_timer = 1; 1366 } 1367 1368 ieee80211_watchdog(ic); 1369 } 1370 1371 static int 1372 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1373 { 1374 #define IS_RUNNING(ifp) \ 1375 (((ifp)->if_flags & IFF_UP) && ((ifp)->if_flags & IFF_RUNNING)) 1376 1377 struct rum_softc *sc = ifp->if_softc; 1378 struct ieee80211com *ic = &sc->sc_ic; 1379 int s, error = 0; 1380 1381 s = splnet(); 1382 1383 switch (cmd) { 1384 case SIOCSIFFLAGS: 1385 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1386 break; 1387 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1388 case IFF_UP|IFF_RUNNING: 1389 rum_update_promisc(sc); 1390 break; 1391 case IFF_UP: 1392 rum_init(ifp); 1393 break; 1394 case IFF_RUNNING: 1395 rum_stop(ifp, 1); 1396 break; 1397 case 0: 1398 break; 1399 } 1400 break; 1401 1402 case SIOCADDMULTI: 1403 case SIOCDELMULTI: 1404 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1405 error = 0; 1406 } 1407 break; 1408 1409 default: 1410 error = ieee80211_ioctl(ic, cmd, data); 1411 } 1412 1413 if (error == ENETRESET) { 1414 if (IS_RUNNING(ifp) && 1415 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1416 rum_init(ifp); 1417 error = 0; 1418 } 1419 1420 splx(s); 1421 1422 return error; 1423 #undef IS_RUNNING 1424 } 1425 1426 static void 1427 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1428 { 1429 usb_device_request_t req; 1430 usbd_status error; 1431 1432 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1433 req.bRequest = RT2573_READ_EEPROM; 1434 USETW(req.wValue, 0); 1435 USETW(req.wIndex, addr); 1436 USETW(req.wLength, len); 1437 1438 error = usbd_do_request(sc->sc_udev, &req, buf); 1439 if (error != 0) { 1440 printf("%s: could not read EEPROM: %s\n", 1441 device_xname(sc->sc_dev), usbd_errstr(error)); 1442 } 1443 } 1444 1445 static uint32_t 1446 rum_read(struct rum_softc *sc, uint16_t reg) 1447 { 1448 uint32_t val; 1449 1450 rum_read_multi(sc, reg, &val, sizeof val); 1451 1452 return le32toh(val); 1453 } 1454 1455 static void 1456 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1457 { 1458 usb_device_request_t req; 1459 usbd_status error; 1460 1461 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1462 req.bRequest = RT2573_READ_MULTI_MAC; 1463 USETW(req.wValue, 0); 1464 USETW(req.wIndex, reg); 1465 USETW(req.wLength, len); 1466 1467 error = usbd_do_request(sc->sc_udev, &req, buf); 1468 if (error != 0) { 1469 printf("%s: could not multi read MAC register: %s\n", 1470 device_xname(sc->sc_dev), usbd_errstr(error)); 1471 } 1472 } 1473 1474 static void 1475 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1476 { 1477 uint32_t tmp = htole32(val); 1478 1479 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1480 } 1481 1482 static void 1483 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1484 { 1485 usb_device_request_t req; 1486 usbd_status error; 1487 1488 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1489 req.bRequest = RT2573_WRITE_MULTI_MAC; 1490 USETW(req.wValue, 0); 1491 USETW(req.wIndex, reg); 1492 USETW(req.wLength, len); 1493 1494 error = usbd_do_request(sc->sc_udev, &req, buf); 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 static void 1502 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1503 { 1504 uint32_t tmp; 1505 int ntries; 1506 1507 for (ntries = 0; ntries < 5; ntries++) { 1508 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1509 break; 1510 } 1511 if (ntries == 5) { 1512 printf("%s: could not write to BBP\n", device_xname(sc->sc_dev)); 1513 return; 1514 } 1515 1516 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1517 rum_write(sc, RT2573_PHY_CSR3, tmp); 1518 } 1519 1520 static uint8_t 1521 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1522 { 1523 uint32_t val; 1524 int ntries; 1525 1526 for (ntries = 0; ntries < 5; ntries++) { 1527 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1528 break; 1529 } 1530 if (ntries == 5) { 1531 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1532 return 0; 1533 } 1534 1535 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1536 rum_write(sc, RT2573_PHY_CSR3, val); 1537 1538 for (ntries = 0; ntries < 100; ntries++) { 1539 val = rum_read(sc, RT2573_PHY_CSR3); 1540 if (!(val & RT2573_BBP_BUSY)) 1541 return val & 0xff; 1542 DELAY(1); 1543 } 1544 1545 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1546 return 0; 1547 } 1548 1549 static void 1550 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1551 { 1552 uint32_t tmp; 1553 int ntries; 1554 1555 for (ntries = 0; ntries < 5; ntries++) { 1556 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1557 break; 1558 } 1559 if (ntries == 5) { 1560 printf("%s: could not write to RF\n", device_xname(sc->sc_dev)); 1561 return; 1562 } 1563 1564 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1565 (reg & 3); 1566 rum_write(sc, RT2573_PHY_CSR4, tmp); 1567 1568 /* remember last written value in sc */ 1569 sc->rf_regs[reg] = val; 1570 1571 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1572 } 1573 1574 static void 1575 rum_select_antenna(struct rum_softc *sc) 1576 { 1577 uint8_t bbp4, bbp77; 1578 uint32_t tmp; 1579 1580 bbp4 = rum_bbp_read(sc, 4); 1581 bbp77 = rum_bbp_read(sc, 77); 1582 1583 /* TBD */ 1584 1585 /* make sure Rx is disabled before switching antenna */ 1586 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1587 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1588 1589 rum_bbp_write(sc, 4, bbp4); 1590 rum_bbp_write(sc, 77, bbp77); 1591 1592 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1593 } 1594 1595 /* 1596 * Enable multi-rate retries for frames sent at OFDM rates. 1597 * In 802.11b/g mode, allow fallback to CCK rates. 1598 */ 1599 static void 1600 rum_enable_mrr(struct rum_softc *sc) 1601 { 1602 struct ieee80211com *ic = &sc->sc_ic; 1603 uint32_t tmp; 1604 1605 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1606 1607 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1608 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1609 tmp |= RT2573_MRR_CCK_FALLBACK; 1610 tmp |= RT2573_MRR_ENABLED; 1611 1612 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1613 } 1614 1615 static void 1616 rum_set_txpreamble(struct rum_softc *sc) 1617 { 1618 uint32_t tmp; 1619 1620 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1621 1622 tmp &= ~RT2573_SHORT_PREAMBLE; 1623 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1624 tmp |= RT2573_SHORT_PREAMBLE; 1625 1626 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1627 } 1628 1629 static void 1630 rum_set_basicrates(struct rum_softc *sc) 1631 { 1632 struct ieee80211com *ic = &sc->sc_ic; 1633 1634 /* update basic rate set */ 1635 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1636 /* 11b basic rates: 1, 2Mbps */ 1637 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1638 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1639 /* 11a basic rates: 6, 12, 24Mbps */ 1640 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1641 } else { 1642 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1643 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1644 } 1645 } 1646 1647 /* 1648 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1649 * driver. 1650 */ 1651 static void 1652 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1653 { 1654 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1655 uint32_t tmp; 1656 1657 /* update all BBP registers that depend on the band */ 1658 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1659 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1660 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1661 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1662 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1663 } 1664 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1665 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1666 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1667 } 1668 1669 sc->bbp17 = bbp17; 1670 rum_bbp_write(sc, 17, bbp17); 1671 rum_bbp_write(sc, 96, bbp96); 1672 rum_bbp_write(sc, 104, bbp104); 1673 1674 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1675 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1676 rum_bbp_write(sc, 75, 0x80); 1677 rum_bbp_write(sc, 86, 0x80); 1678 rum_bbp_write(sc, 88, 0x80); 1679 } 1680 1681 rum_bbp_write(sc, 35, bbp35); 1682 rum_bbp_write(sc, 97, bbp97); 1683 rum_bbp_write(sc, 98, bbp98); 1684 1685 tmp = rum_read(sc, RT2573_PHY_CSR0); 1686 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1687 if (IEEE80211_IS_CHAN_2GHZ(c)) 1688 tmp |= RT2573_PA_PE_2GHZ; 1689 else 1690 tmp |= RT2573_PA_PE_5GHZ; 1691 rum_write(sc, RT2573_PHY_CSR0, tmp); 1692 1693 /* 802.11a uses a 16 microseconds short interframe space */ 1694 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1695 } 1696 1697 static void 1698 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1699 { 1700 struct ieee80211com *ic = &sc->sc_ic; 1701 const struct rfprog *rfprog; 1702 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1703 int8_t power; 1704 u_int i, chan; 1705 1706 chan = ieee80211_chan2ieee(ic, c); 1707 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1708 return; 1709 1710 /* select the appropriate RF settings based on what EEPROM says */ 1711 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1712 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1713 1714 /* find the settings for this channel (we know it exists) */ 1715 for (i = 0; rfprog[i].chan != chan; i++); 1716 1717 power = sc->txpow[i]; 1718 if (power < 0) { 1719 bbp94 += power; 1720 power = 0; 1721 } else if (power > 31) { 1722 bbp94 += power - 31; 1723 power = 31; 1724 } 1725 1726 /* 1727 * If we are switching from the 2GHz band to the 5GHz band or 1728 * vice-versa, BBP registers need to be reprogrammed. 1729 */ 1730 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1731 rum_select_band(sc, c); 1732 rum_select_antenna(sc); 1733 } 1734 ic->ic_curchan = c; 1735 1736 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1737 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1738 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1739 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1740 1741 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1742 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1743 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1744 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1745 1746 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1747 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1748 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1749 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1750 1751 DELAY(10); 1752 1753 /* enable smart mode for MIMO-capable RFs */ 1754 bbp3 = rum_bbp_read(sc, 3); 1755 1756 bbp3 &= ~RT2573_SMART_MODE; 1757 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1758 bbp3 |= RT2573_SMART_MODE; 1759 1760 rum_bbp_write(sc, 3, bbp3); 1761 1762 if (bbp94 != RT2573_BBPR94_DEFAULT) 1763 rum_bbp_write(sc, 94, bbp94); 1764 } 1765 1766 /* 1767 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1768 * and HostAP operating modes. 1769 */ 1770 static void 1771 rum_enable_tsf_sync(struct rum_softc *sc) 1772 { 1773 struct ieee80211com *ic = &sc->sc_ic; 1774 uint32_t tmp; 1775 1776 if (ic->ic_opmode != IEEE80211_M_STA) { 1777 /* 1778 * Change default 16ms TBTT adjustment to 8ms. 1779 * Must be done before enabling beacon generation. 1780 */ 1781 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1782 } 1783 1784 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1785 1786 /* set beacon interval (in 1/16ms unit) */ 1787 tmp |= ic->ic_bss->ni_intval * 16; 1788 1789 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1790 if (ic->ic_opmode == IEEE80211_M_STA) 1791 tmp |= RT2573_TSF_MODE(1); 1792 else 1793 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1794 1795 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1796 } 1797 1798 static void 1799 rum_update_slot(struct rum_softc *sc) 1800 { 1801 struct ieee80211com *ic = &sc->sc_ic; 1802 uint8_t slottime; 1803 uint32_t tmp; 1804 1805 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1806 1807 tmp = rum_read(sc, RT2573_MAC_CSR9); 1808 tmp = (tmp & ~0xff) | slottime; 1809 rum_write(sc, RT2573_MAC_CSR9, tmp); 1810 1811 DPRINTF(("setting slot time to %uus\n", slottime)); 1812 } 1813 1814 static void 1815 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1816 { 1817 uint32_t tmp; 1818 1819 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1820 rum_write(sc, RT2573_MAC_CSR4, tmp); 1821 1822 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1823 rum_write(sc, RT2573_MAC_CSR5, tmp); 1824 } 1825 1826 static void 1827 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1828 { 1829 uint32_t tmp; 1830 1831 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1832 rum_write(sc, RT2573_MAC_CSR2, tmp); 1833 1834 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1835 rum_write(sc, RT2573_MAC_CSR3, tmp); 1836 } 1837 1838 static void 1839 rum_update_promisc(struct rum_softc *sc) 1840 { 1841 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1842 uint32_t tmp; 1843 1844 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1845 1846 tmp &= ~RT2573_DROP_NOT_TO_ME; 1847 if (!(ifp->if_flags & IFF_PROMISC)) 1848 tmp |= RT2573_DROP_NOT_TO_ME; 1849 1850 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1851 1852 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1853 "entering" : "leaving")); 1854 } 1855 1856 static const char * 1857 rum_get_rf(int rev) 1858 { 1859 switch (rev) { 1860 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1861 case RT2573_RF_2528: return "RT2528"; 1862 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1863 case RT2573_RF_5226: return "RT5226"; 1864 default: return "unknown"; 1865 } 1866 } 1867 1868 static void 1869 rum_read_eeprom(struct rum_softc *sc) 1870 { 1871 struct ieee80211com *ic = &sc->sc_ic; 1872 uint16_t val; 1873 #ifdef RUM_DEBUG 1874 int i; 1875 #endif 1876 1877 /* read MAC/BBP type */ 1878 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1879 sc->macbbp_rev = le16toh(val); 1880 1881 /* read MAC address */ 1882 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1883 1884 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1885 val = le16toh(val); 1886 sc->rf_rev = (val >> 11) & 0x1f; 1887 sc->hw_radio = (val >> 10) & 0x1; 1888 sc->rx_ant = (val >> 4) & 0x3; 1889 sc->tx_ant = (val >> 2) & 0x3; 1890 sc->nb_ant = val & 0x3; 1891 1892 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1893 1894 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1895 val = le16toh(val); 1896 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1897 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1898 1899 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1900 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1901 1902 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1903 val = le16toh(val); 1904 if ((val & 0xff) != 0xff) 1905 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1906 1907 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1908 val = le16toh(val); 1909 if ((val & 0xff) != 0xff) 1910 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1911 1912 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1913 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1914 1915 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1916 val = le16toh(val); 1917 if ((val & 0xff) != 0xff) 1918 sc->rffreq = val & 0xff; 1919 1920 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1921 1922 /* read Tx power for all a/b/g channels */ 1923 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1924 /* XXX default Tx power for 802.11a channels */ 1925 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1926 #ifdef RUM_DEBUG 1927 for (i = 0; i < 14; i++) 1928 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1929 #endif 1930 1931 /* read default values for BBP registers */ 1932 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1933 #ifdef RUM_DEBUG 1934 for (i = 0; i < 14; i++) { 1935 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1936 continue; 1937 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1938 sc->bbp_prom[i].val)); 1939 } 1940 #endif 1941 } 1942 1943 static int 1944 rum_bbp_init(struct rum_softc *sc) 1945 { 1946 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1947 unsigned int i, ntries; 1948 uint8_t val; 1949 1950 /* wait for BBP to be ready */ 1951 for (ntries = 0; ntries < 100; ntries++) { 1952 val = rum_bbp_read(sc, 0); 1953 if (val != 0 && val != 0xff) 1954 break; 1955 DELAY(1000); 1956 } 1957 if (ntries == 100) { 1958 printf("%s: timeout waiting for BBP\n", 1959 device_xname(sc->sc_dev)); 1960 return EIO; 1961 } 1962 1963 /* initialize BBP registers to default values */ 1964 for (i = 0; i < N(rum_def_bbp); i++) 1965 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1966 1967 /* write vendor-specific BBP values (from EEPROM) */ 1968 for (i = 0; i < 16; i++) { 1969 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1970 continue; 1971 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1972 } 1973 1974 return 0; 1975 #undef N 1976 } 1977 1978 static int 1979 rum_init(struct ifnet *ifp) 1980 { 1981 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1982 struct rum_softc *sc = ifp->if_softc; 1983 struct ieee80211com *ic = &sc->sc_ic; 1984 struct rum_rx_data *data; 1985 uint32_t tmp; 1986 usbd_status error = 0; 1987 unsigned int i, ntries; 1988 1989 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1990 if (rum_attachhook(sc)) 1991 goto fail; 1992 } 1993 1994 rum_stop(ifp, 0); 1995 1996 /* initialize MAC registers to default values */ 1997 for (i = 0; i < N(rum_def_mac); i++) 1998 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1999 2000 /* set host ready */ 2001 rum_write(sc, RT2573_MAC_CSR1, 3); 2002 rum_write(sc, RT2573_MAC_CSR1, 0); 2003 2004 /* wait for BBP/RF to wakeup */ 2005 for (ntries = 0; ntries < 1000; ntries++) { 2006 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 2007 break; 2008 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 2009 DELAY(1000); 2010 } 2011 if (ntries == 1000) { 2012 printf("%s: timeout waiting for BBP/RF to wakeup\n", 2013 device_xname(sc->sc_dev)); 2014 goto fail; 2015 } 2016 2017 if ((error = rum_bbp_init(sc)) != 0) 2018 goto fail; 2019 2020 /* select default channel */ 2021 rum_select_band(sc, ic->ic_curchan); 2022 rum_select_antenna(sc); 2023 rum_set_chan(sc, ic->ic_curchan); 2024 2025 /* clear STA registers */ 2026 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2027 2028 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2029 rum_set_macaddr(sc, ic->ic_myaddr); 2030 2031 /* initialize ASIC */ 2032 rum_write(sc, RT2573_MAC_CSR1, 4); 2033 2034 /* 2035 * Allocate xfer for AMRR statistics requests. 2036 */ 2037 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 2038 if (sc->amrr_xfer == NULL) { 2039 printf("%s: could not allocate AMRR xfer\n", 2040 device_xname(sc->sc_dev)); 2041 goto fail; 2042 } 2043 2044 /* 2045 * Open Tx and Rx USB bulk pipes. 2046 */ 2047 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2048 &sc->sc_tx_pipeh); 2049 if (error != 0) { 2050 printf("%s: could not open Tx pipe: %s\n", 2051 device_xname(sc->sc_dev), usbd_errstr(error)); 2052 goto fail; 2053 } 2054 2055 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2056 &sc->sc_rx_pipeh); 2057 if (error != 0) { 2058 printf("%s: could not open Rx pipe: %s\n", 2059 device_xname(sc->sc_dev), usbd_errstr(error)); 2060 goto fail; 2061 } 2062 2063 /* 2064 * Allocate Tx and Rx xfer queues. 2065 */ 2066 error = rum_alloc_tx_list(sc); 2067 if (error != 0) { 2068 printf("%s: could not allocate Tx list\n", 2069 device_xname(sc->sc_dev)); 2070 goto fail; 2071 } 2072 2073 error = rum_alloc_rx_list(sc); 2074 if (error != 0) { 2075 printf("%s: could not allocate Rx list\n", 2076 device_xname(sc->sc_dev)); 2077 goto fail; 2078 } 2079 2080 /* 2081 * Start up the receive pipe. 2082 */ 2083 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2084 data = &sc->rx_data[i]; 2085 2086 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2087 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2088 error = usbd_transfer(data->xfer); 2089 if (error != USBD_NORMAL_COMPLETION && 2090 error != USBD_IN_PROGRESS) { 2091 printf("%s: could not queue Rx transfer\n", 2092 device_xname(sc->sc_dev)); 2093 goto fail; 2094 } 2095 } 2096 2097 /* update Rx filter */ 2098 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2099 2100 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2101 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2102 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2103 RT2573_DROP_ACKCTS; 2104 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2105 tmp |= RT2573_DROP_TODS; 2106 if (!(ifp->if_flags & IFF_PROMISC)) 2107 tmp |= RT2573_DROP_NOT_TO_ME; 2108 } 2109 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2110 2111 ifp->if_flags &= ~IFF_OACTIVE; 2112 ifp->if_flags |= IFF_RUNNING; 2113 2114 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2115 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2116 else 2117 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2118 2119 return 0; 2120 2121 fail: rum_stop(ifp, 1); 2122 return error; 2123 #undef N 2124 } 2125 2126 static void 2127 rum_stop(struct ifnet *ifp, int disable) 2128 { 2129 struct rum_softc *sc = ifp->if_softc; 2130 struct ieee80211com *ic = &sc->sc_ic; 2131 uint32_t tmp; 2132 2133 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2134 2135 sc->sc_tx_timer = 0; 2136 ifp->if_timer = 0; 2137 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2138 2139 /* disable Rx */ 2140 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2141 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2142 2143 /* reset ASIC */ 2144 rum_write(sc, RT2573_MAC_CSR1, 3); 2145 rum_write(sc, RT2573_MAC_CSR1, 0); 2146 2147 if (sc->amrr_xfer != NULL) { 2148 usbd_free_xfer(sc->amrr_xfer); 2149 sc->amrr_xfer = NULL; 2150 } 2151 2152 if (sc->sc_rx_pipeh != NULL) { 2153 usbd_abort_pipe(sc->sc_rx_pipeh); 2154 usbd_close_pipe(sc->sc_rx_pipeh); 2155 sc->sc_rx_pipeh = NULL; 2156 } 2157 2158 if (sc->sc_tx_pipeh != NULL) { 2159 usbd_abort_pipe(sc->sc_tx_pipeh); 2160 usbd_close_pipe(sc->sc_tx_pipeh); 2161 sc->sc_tx_pipeh = NULL; 2162 } 2163 2164 rum_free_rx_list(sc); 2165 rum_free_tx_list(sc); 2166 } 2167 2168 static int 2169 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2170 { 2171 usb_device_request_t req; 2172 uint16_t reg = RT2573_MCU_CODE_BASE; 2173 usbd_status error; 2174 2175 /* copy firmware image into NIC */ 2176 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2177 rum_write(sc, reg, UGETDW(ucode)); 2178 2179 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2180 req.bRequest = RT2573_MCU_CNTL; 2181 USETW(req.wValue, RT2573_MCU_RUN); 2182 USETW(req.wIndex, 0); 2183 USETW(req.wLength, 0); 2184 2185 error = usbd_do_request(sc->sc_udev, &req, NULL); 2186 if (error != 0) { 2187 printf("%s: could not run firmware: %s\n", 2188 device_xname(sc->sc_dev), usbd_errstr(error)); 2189 } 2190 return error; 2191 } 2192 2193 static int 2194 rum_prepare_beacon(struct rum_softc *sc) 2195 { 2196 struct ieee80211com *ic = &sc->sc_ic; 2197 struct rum_tx_desc desc; 2198 struct mbuf *m0; 2199 int rate; 2200 2201 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2202 if (m0 == NULL) { 2203 aprint_error_dev(sc->sc_dev, 2204 "could not allocate beacon frame\n"); 2205 return ENOBUFS; 2206 } 2207 2208 /* send beacons at the lowest available rate */ 2209 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2210 2211 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2212 m0->m_pkthdr.len, rate); 2213 2214 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2215 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2216 2217 /* copy beacon header and payload into NIC memory */ 2218 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2219 m0->m_pkthdr.len); 2220 2221 m_freem(m0); 2222 2223 return 0; 2224 } 2225 2226 static void 2227 rum_newassoc(struct ieee80211_node *ni, int isnew) 2228 { 2229 /* start with lowest Tx rate */ 2230 ni->ni_txrate = 0; 2231 } 2232 2233 static void 2234 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2235 { 2236 int i; 2237 2238 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2239 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2240 2241 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2242 2243 /* set rate to some reasonable initial value */ 2244 for (i = ni->ni_rates.rs_nrates - 1; 2245 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2246 i--); 2247 ni->ni_txrate = i; 2248 2249 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2250 } 2251 2252 static void 2253 rum_amrr_timeout(void *arg) 2254 { 2255 struct rum_softc *sc = arg; 2256 usb_device_request_t req; 2257 2258 /* 2259 * Asynchronously read statistic registers (cleared by read). 2260 */ 2261 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2262 req.bRequest = RT2573_READ_MULTI_MAC; 2263 USETW(req.wValue, 0); 2264 USETW(req.wIndex, RT2573_STA_CSR0); 2265 USETW(req.wLength, sizeof sc->sta); 2266 2267 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2268 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2269 rum_amrr_update); 2270 (void)usbd_transfer(sc->amrr_xfer); 2271 } 2272 2273 static void 2274 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2275 usbd_status status) 2276 { 2277 struct rum_softc *sc = (struct rum_softc *)priv; 2278 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2279 2280 if (status != USBD_NORMAL_COMPLETION) { 2281 printf("%s: could not retrieve Tx statistics - cancelling " 2282 "automatic rate control\n", device_xname(sc->sc_dev)); 2283 return; 2284 } 2285 2286 /* count TX retry-fail as Tx errors */ 2287 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2288 2289 sc->amn.amn_retrycnt = 2290 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2291 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2292 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2293 2294 sc->amn.amn_txcnt = 2295 sc->amn.amn_retrycnt + 2296 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2297 2298 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2299 2300 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2301 } 2302 2303 static int 2304 rum_activate(device_t self, enum devact act) 2305 { 2306 switch (act) { 2307 case DVACT_DEACTIVATE: 2308 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2309 return 0; 2310 default: 2311 return 0; 2312 } 2313 } 2314 2315 MODULE(MODULE_CLASS_DRIVER, if_rum, "bpf"); 2316 2317 #ifdef _MODULE 2318 #include "ioconf.c" 2319 #endif 2320 2321 static int 2322 if_rum_modcmd(modcmd_t cmd, void *aux) 2323 { 2324 int error = 0; 2325 2326 switch (cmd) { 2327 case MODULE_CMD_INIT: 2328 #ifdef _MODULE 2329 error = config_init_component(cfdriver_ioconf_rum, 2330 cfattach_ioconf_rum, cfdata_ioconf_rum); 2331 #endif 2332 return error; 2333 case MODULE_CMD_FINI: 2334 #ifdef _MODULE 2335 error = config_fini_component(cfdriver_ioconf_rum, 2336 cfattach_ioconf_rum, cfdata_ioconf_rum); 2337 #endif 2338 return error; 2339 default: 2340 return ENOTTY; 2341 } 2342 } 2343
Indexes created Wed Oct 01 19:09:53 GMT 2025