1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.65 2019/05/05 03:17:54 mrg Exp $ */ 3 4 /*- 5 * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini@free.fr> 6 * Copyright (c) 2006 Niall O'Higgins <niallo@openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 /*- 22 * Ralink Technology RT2501USB/RT2601USB chipset driver 23 * http://www.ralinktech.com.tw/ 24 */ 25 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: if_rum.c,v 1.65 2019/05/05 03:17:54 mrg 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/module.h> 41 #include <sys/conf.h> 42 #include <sys/device.h> 43 44 #include <sys/bus.h> 45 #include <machine/endian.h> 46 #include <sys/intr.h> 47 48 #include <net/bpf.h> 49 #include <net/if.h> 50 #include <net/if_arp.h> 51 #include <net/if_dl.h> 52 #include <net/if_ether.h> 53 #include <net/if_media.h> 54 #include <net/if_types.h> 55 56 #include <netinet/in.h> 57 #include <netinet/in_systm.h> 58 #include <netinet/in_var.h> 59 #include <netinet/ip.h> 60 61 #include <net80211/ieee80211_netbsd.h> 62 #include <net80211/ieee80211_var.h> 63 #include <net80211/ieee80211_amrr.h> 64 #include <net80211/ieee80211_radiotap.h> 65 66 #include <dev/firmload.h> 67 68 #include <dev/usb/usb.h> 69 #include <dev/usb/usbdi.h> 70 #include <dev/usb/usbdi_util.h> 71 #include <dev/usb/usbdevs.h> 72 73 #include <dev/usb/if_rumreg.h> 74 #include <dev/usb/if_rumvar.h> 75 76 #ifdef RUM_DEBUG 77 #define DPRINTF(x) do { if (rum_debug) printf x; } while (0) 78 #define DPRINTFN(n, x) do { if (rum_debug >= (n)) printf x; } while (0) 79 int rum_debug = 1; 80 #else 81 #define DPRINTF(x) 82 #define DPRINTFN(n, x) 83 #endif 84 85 /* various supported device vendors/products */ 86 static const struct usb_devno rum_devs[] = { 87 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_HWU54DM }, 88 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_2 }, 89 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_3 }, 90 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_4 }, 91 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_WUG2700 }, 92 { USB_VENDOR_AMIT, USB_PRODUCT_AMIT_CGWLUSB2GO }, 93 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_2 }, 94 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_3 }, 95 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 96 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 97 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050C }, 98 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB200 }, 99 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 100 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GR }, 101 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 102 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_RT2573 }, 103 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GL }, 104 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GPX }, 105 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 106 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 107 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 108 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 109 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA110 }, 110 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA111 }, 111 { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7318 }, 112 { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7618 }, 113 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 114 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWI05GS }, 115 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 116 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 117 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254LB }, 118 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254V2AP }, 119 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 120 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_G54HP }, 121 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, 122 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HG }, 123 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_WLIUCG }, 124 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 125 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 126 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 127 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_4 }, 128 { USB_VENDOR_NOVATECH, USB_PRODUCT_NOVATECH_RT2573 }, 129 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54HP }, 130 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 131 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 132 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 133 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 134 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_3 }, 135 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 136 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 137 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 138 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 139 { USB_VENDOR_SPARKLAN, USB_PRODUCT_SPARKLAN_RT2573 }, 140 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 }, 141 { USB_VENDOR_SYNET, USB_PRODUCT_SYNET_MWP54SS }, 142 { USB_VENDOR_ZYXEL, USB_PRODUCT_ZYXEL_RT2573 } 143 }; 144 145 static int rum_attachhook(void *); 146 static int rum_alloc_tx_list(struct rum_softc *); 147 static void rum_free_tx_list(struct rum_softc *); 148 static int rum_alloc_rx_list(struct rum_softc *); 149 static void rum_free_rx_list(struct rum_softc *); 150 static int rum_media_change(struct ifnet *); 151 static void rum_next_scan(void *); 152 static void rum_task(void *); 153 static int rum_newstate(struct ieee80211com *, 154 enum ieee80211_state, int); 155 static void rum_txeof(struct usbd_xfer *, void *, 156 usbd_status); 157 static void rum_rxeof(struct usbd_xfer *, void *, 158 usbd_status); 159 static uint8_t rum_rxrate(const struct rum_rx_desc *); 160 static int rum_ack_rate(struct ieee80211com *, int); 161 static uint16_t rum_txtime(int, int, uint32_t); 162 static uint8_t rum_plcp_signal(int); 163 static void rum_setup_tx_desc(struct rum_softc *, 164 struct rum_tx_desc *, uint32_t, uint16_t, int, 165 int); 166 static int rum_tx_data(struct rum_softc *, struct mbuf *, 167 struct ieee80211_node *); 168 static void rum_start(struct ifnet *); 169 static void rum_watchdog(struct ifnet *); 170 static int rum_ioctl(struct ifnet *, u_long, void *); 171 static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 172 int); 173 static uint32_t rum_read(struct rum_softc *, uint16_t); 174 static void rum_read_multi(struct rum_softc *, uint16_t, void *, 175 int); 176 static void rum_write(struct rum_softc *, uint16_t, uint32_t); 177 static void rum_write_multi(struct rum_softc *, uint16_t, void *, 178 size_t); 179 static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 180 static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 181 static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 182 static void rum_select_antenna(struct rum_softc *); 183 static void rum_enable_mrr(struct rum_softc *); 184 static void rum_set_txpreamble(struct rum_softc *); 185 static void rum_set_basicrates(struct rum_softc *); 186 static void rum_select_band(struct rum_softc *, 187 struct ieee80211_channel *); 188 static void rum_set_chan(struct rum_softc *, 189 struct ieee80211_channel *); 190 static void rum_enable_tsf_sync(struct rum_softc *); 191 static void rum_update_slot(struct rum_softc *); 192 static void rum_set_bssid(struct rum_softc *, const uint8_t *); 193 static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 194 static void rum_update_promisc(struct rum_softc *); 195 static const char *rum_get_rf(int); 196 static void rum_read_eeprom(struct rum_softc *); 197 static int rum_bbp_init(struct rum_softc *); 198 static int rum_init(struct ifnet *); 199 static void rum_stop(struct ifnet *, int); 200 static int rum_load_microcode(struct rum_softc *, const u_char *, 201 size_t); 202 static int rum_prepare_beacon(struct rum_softc *); 203 static void rum_newassoc(struct ieee80211_node *, int); 204 static void rum_amrr_start(struct rum_softc *, 205 struct ieee80211_node *); 206 static void rum_amrr_timeout(void *); 207 static void rum_amrr_update(struct usbd_xfer *, void *, 208 usbd_status); 209 210 static const struct { 211 uint32_t reg; 212 uint32_t val; 213 } rum_def_mac[] = { 214 RT2573_DEF_MAC 215 }; 216 217 static const struct { 218 uint8_t reg; 219 uint8_t val; 220 } rum_def_bbp[] = { 221 RT2573_DEF_BBP 222 }; 223 224 static const struct rfprog { 225 uint8_t chan; 226 uint32_t r1, r2, r3, r4; 227 } rum_rf5226[] = { 228 RT2573_RF5226 229 }, rum_rf5225[] = { 230 RT2573_RF5225 231 }; 232 233 static int rum_match(device_t, cfdata_t, void *); 234 static void rum_attach(device_t, device_t, void *); 235 static int rum_detach(device_t, int); 236 static int rum_activate(device_t, enum devact); 237 238 CFATTACH_DECL_NEW(rum, sizeof(struct rum_softc), rum_match, rum_attach, 239 rum_detach, rum_activate); 240 241 static int 242 rum_match(device_t parent, cfdata_t match, void *aux) 243 { 244 struct usb_attach_arg *uaa = aux; 245 246 return (usb_lookup(rum_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? 247 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 248 } 249 250 static int 251 rum_attachhook(void *xsc) 252 { 253 struct rum_softc *sc = xsc; 254 firmware_handle_t fwh; 255 const char *name = "rum-rt2573"; 256 u_char *ucode; 257 size_t size; 258 int error; 259 260 if ((error = firmware_open("rum", name, &fwh)) != 0) { 261 printf("%s: failed firmware_open of file %s (error %d)\n", 262 device_xname(sc->sc_dev), name, error); 263 return error; 264 } 265 size = firmware_get_size(fwh); 266 ucode = firmware_malloc(size); 267 if (ucode == NULL) { 268 printf("%s: failed to allocate firmware memory\n", 269 device_xname(sc->sc_dev)); 270 firmware_close(fwh); 271 return ENOMEM; 272 } 273 error = firmware_read(fwh, 0, ucode, size); 274 firmware_close(fwh); 275 if (error != 0) { 276 printf("%s: failed to read firmware (error %d)\n", 277 device_xname(sc->sc_dev), error); 278 firmware_free(ucode, size); 279 return error; 280 } 281 282 if (rum_load_microcode(sc, ucode, size) != 0) { 283 printf("%s: could not load 8051 microcode\n", 284 device_xname(sc->sc_dev)); 285 firmware_free(ucode, size); 286 return ENXIO; 287 } 288 289 firmware_free(ucode, size); 290 sc->sc_flags |= RT2573_FWLOADED; 291 292 return 0; 293 } 294 295 static void 296 rum_attach(device_t parent, device_t self, void *aux) 297 { 298 struct rum_softc *sc = device_private(self); 299 struct usb_attach_arg *uaa = aux; 300 struct ieee80211com *ic = &sc->sc_ic; 301 struct ifnet *ifp = &sc->sc_if; 302 usb_interface_descriptor_t *id; 303 usb_endpoint_descriptor_t *ed; 304 usbd_status error; 305 char *devinfop; 306 int i, ntries; 307 uint32_t tmp; 308 309 sc->sc_dev = self; 310 sc->sc_udev = uaa->uaa_device; 311 sc->sc_flags = 0; 312 313 aprint_naive("\n"); 314 aprint_normal("\n"); 315 316 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 317 aprint_normal_dev(self, "%s\n", devinfop); 318 usbd_devinfo_free(devinfop); 319 320 error = usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0); 321 if (error != 0) { 322 aprint_error_dev(self, "failed to set configuration" 323 ", err=%s\n", usbd_errstr(error)); 324 return; 325 } 326 327 /* get the first interface handle */ 328 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 329 &sc->sc_iface); 330 if (error != 0) { 331 aprint_error_dev(self, "could not get interface handle\n"); 332 return; 333 } 334 335 /* 336 * Find endpoints. 337 */ 338 id = usbd_get_interface_descriptor(sc->sc_iface); 339 340 sc->sc_rx_no = sc->sc_tx_no = -1; 341 for (i = 0; i < id->bNumEndpoints; i++) { 342 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 343 if (ed == NULL) { 344 aprint_error_dev(self, 345 "no endpoint descriptor for iface %d\n", i); 346 return; 347 } 348 349 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 350 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 351 sc->sc_rx_no = ed->bEndpointAddress; 352 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 353 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 354 sc->sc_tx_no = ed->bEndpointAddress; 355 } 356 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 357 aprint_error_dev(self, "missing endpoint\n"); 358 return; 359 } 360 361 usb_init_task(&sc->sc_task, rum_task, sc, 0); 362 callout_init(&sc->sc_scan_ch, 0); 363 364 sc->amrr.amrr_min_success_threshold = 1; 365 sc->amrr.amrr_max_success_threshold = 10; 366 callout_init(&sc->sc_amrr_ch, 0); 367 368 /* retrieve RT2573 rev. no */ 369 for (ntries = 0; ntries < 1000; ntries++) { 370 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 371 break; 372 DELAY(1000); 373 } 374 if (ntries == 1000) { 375 aprint_error_dev(self, "timeout waiting for chip to settle\n"); 376 return; 377 } 378 379 /* retrieve MAC address and various other things from EEPROM */ 380 rum_read_eeprom(sc); 381 382 aprint_normal_dev(self, 383 "MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 384 sc->macbbp_rev, tmp, 385 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 386 387 ic->ic_ifp = ifp; 388 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 389 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 390 ic->ic_state = IEEE80211_S_INIT; 391 392 /* set device capabilities */ 393 ic->ic_caps = 394 IEEE80211_C_IBSS | /* IBSS mode supported */ 395 IEEE80211_C_MONITOR | /* monitor mode supported */ 396 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 397 IEEE80211_C_TXPMGT | /* tx power management */ 398 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 399 IEEE80211_C_SHSLOT | /* short slot time supported */ 400 IEEE80211_C_WPA; /* 802.11i */ 401 402 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 403 /* set supported .11a rates */ 404 ic->ic_sup_rates[IEEE80211_MODE_11A] = ieee80211_std_rateset_11a; 405 406 /* set supported .11a channels */ 407 for (i = 34; i <= 46; i += 4) { 408 ic->ic_channels[i].ic_freq = 409 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 410 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 411 } 412 for (i = 36; i <= 64; i += 4) { 413 ic->ic_channels[i].ic_freq = 414 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 415 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 416 } 417 for (i = 100; i <= 140; i += 4) { 418 ic->ic_channels[i].ic_freq = 419 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 420 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 421 } 422 for (i = 149; i <= 165; i += 4) { 423 ic->ic_channels[i].ic_freq = 424 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 425 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 426 } 427 } 428 429 /* set supported .11b and .11g rates */ 430 ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_std_rateset_11b; 431 ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_std_rateset_11g; 432 433 /* set supported .11b and .11g channels (1 through 14) */ 434 for (i = 1; i <= 14; i++) { 435 ic->ic_channels[i].ic_freq = 436 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 437 ic->ic_channels[i].ic_flags = 438 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 439 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 440 } 441 442 ifp->if_softc = sc; 443 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 444 ifp->if_init = rum_init; 445 ifp->if_ioctl = rum_ioctl; 446 ifp->if_start = rum_start; 447 ifp->if_watchdog = rum_watchdog; 448 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 449 IFQ_SET_READY(&ifp->if_snd); 450 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 451 452 if_attach(ifp); 453 ieee80211_ifattach(ic); 454 ic->ic_newassoc = rum_newassoc; 455 456 /* override state transition machine */ 457 sc->sc_newstate = ic->ic_newstate; 458 ic->ic_newstate = rum_newstate; 459 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 460 461 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 462 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 463 &sc->sc_drvbpf); 464 465 sc->sc_rxtap_len = sizeof(sc->sc_rxtapu); 466 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 467 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 468 469 sc->sc_txtap_len = sizeof(sc->sc_txtapu); 470 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 471 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 472 473 ieee80211_announce(ic); 474 475 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 476 477 if (!pmf_device_register(self, NULL, NULL)) 478 aprint_error_dev(self, "couldn't establish power handler\n"); 479 480 return; 481 } 482 483 static int 484 rum_detach(device_t self, int flags) 485 { 486 struct rum_softc *sc = device_private(self); 487 struct ieee80211com *ic = &sc->sc_ic; 488 struct ifnet *ifp = &sc->sc_if; 489 int s; 490 491 if (!ifp->if_softc) 492 return 0; 493 494 pmf_device_deregister(self); 495 496 s = splusb(); 497 498 rum_stop(ifp, 1); 499 callout_halt(&sc->sc_scan_ch, NULL); 500 callout_halt(&sc->sc_amrr_ch, NULL); 501 usb_rem_task_wait(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER, NULL); 502 503 bpf_detach(ifp); 504 ieee80211_ifdetach(ic); /* free all nodes */ 505 if_detach(ifp); 506 507 splx(s); 508 509 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 510 511 return 0; 512 } 513 514 static int 515 rum_alloc_tx_list(struct rum_softc *sc) 516 { 517 struct rum_tx_data *data; 518 int i, error; 519 520 sc->tx_cur = sc->tx_queued = 0; 521 522 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 523 data = &sc->tx_data[i]; 524 525 data->sc = sc; 526 527 error = usbd_create_xfer(sc->sc_tx_pipeh, 528 RT2573_TX_DESC_SIZE + IEEE80211_MAX_LEN, 529 USBD_FORCE_SHORT_XFER, 0, &data->xfer); 530 if (error) { 531 printf("%s: could not allocate tx xfer\n", 532 device_xname(sc->sc_dev)); 533 goto fail; 534 } 535 data->buf = usbd_get_buffer(data->xfer); 536 537 /* clean Tx descriptor */ 538 memset(data->buf, 0, RT2573_TX_DESC_SIZE); 539 } 540 541 return 0; 542 543 fail: rum_free_tx_list(sc); 544 return error; 545 } 546 547 static void 548 rum_free_tx_list(struct rum_softc *sc) 549 { 550 struct rum_tx_data *data; 551 int i; 552 553 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 554 data = &sc->tx_data[i]; 555 556 if (data->xfer != NULL) { 557 usbd_destroy_xfer(data->xfer); 558 data->xfer = NULL; 559 } 560 561 if (data->ni != NULL) { 562 ieee80211_free_node(data->ni); 563 data->ni = NULL; 564 } 565 } 566 } 567 568 static int 569 rum_alloc_rx_list(struct rum_softc *sc) 570 { 571 struct rum_rx_data *data; 572 int i, error; 573 574 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 575 data = &sc->rx_data[i]; 576 577 data->sc = sc; 578 579 error = usbd_create_xfer(sc->sc_rx_pipeh, MCLBYTES, 580 0, 0, &data->xfer); 581 if (error) { 582 printf("%s: could not allocate rx xfer\n", 583 device_xname(sc->sc_dev)); 584 goto fail; 585 } 586 587 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 588 if (data->m == NULL) { 589 printf("%s: could not allocate rx mbuf\n", 590 device_xname(sc->sc_dev)); 591 error = ENOMEM; 592 goto fail; 593 } 594 595 MCLGET(data->m, M_DONTWAIT); 596 if (!(data->m->m_flags & M_EXT)) { 597 printf("%s: could not allocate rx mbuf cluster\n", 598 device_xname(sc->sc_dev)); 599 error = ENOMEM; 600 goto fail; 601 } 602 603 data->buf = mtod(data->m, uint8_t *); 604 } 605 606 return 0; 607 608 fail: rum_free_rx_list(sc); 609 return error; 610 } 611 612 static void 613 rum_free_rx_list(struct rum_softc *sc) 614 { 615 struct rum_rx_data *data; 616 int i; 617 618 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 619 data = &sc->rx_data[i]; 620 621 if (data->xfer != NULL) { 622 usbd_destroy_xfer(data->xfer); 623 data->xfer = NULL; 624 } 625 626 if (data->m != NULL) { 627 m_freem(data->m); 628 data->m = NULL; 629 } 630 } 631 } 632 633 static int 634 rum_media_change(struct ifnet *ifp) 635 { 636 int error; 637 638 error = ieee80211_media_change(ifp); 639 if (error != ENETRESET) 640 return error; 641 642 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 643 rum_init(ifp); 644 645 return 0; 646 } 647 648 /* 649 * This function is called periodically (every 200ms) during scanning to 650 * switch from one channel to another. 651 */ 652 static void 653 rum_next_scan(void *arg) 654 { 655 struct rum_softc *sc = arg; 656 struct ieee80211com *ic = &sc->sc_ic; 657 int s; 658 659 s = splnet(); 660 if (ic->ic_state == IEEE80211_S_SCAN) 661 ieee80211_next_scan(ic); 662 splx(s); 663 } 664 665 static void 666 rum_task(void *arg) 667 { 668 struct rum_softc *sc = arg; 669 struct ieee80211com *ic = &sc->sc_ic; 670 enum ieee80211_state ostate; 671 struct ieee80211_node *ni; 672 uint32_t tmp; 673 674 ostate = ic->ic_state; 675 676 switch (sc->sc_state) { 677 case IEEE80211_S_INIT: 678 if (ostate == IEEE80211_S_RUN) { 679 /* abort TSF synchronization */ 680 tmp = rum_read(sc, RT2573_TXRX_CSR9); 681 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 682 } 683 break; 684 685 case IEEE80211_S_SCAN: 686 rum_set_chan(sc, ic->ic_curchan); 687 callout_reset(&sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 688 break; 689 690 case IEEE80211_S_AUTH: 691 rum_set_chan(sc, ic->ic_curchan); 692 break; 693 694 case IEEE80211_S_ASSOC: 695 rum_set_chan(sc, ic->ic_curchan); 696 break; 697 698 case IEEE80211_S_RUN: 699 rum_set_chan(sc, ic->ic_curchan); 700 701 ni = ic->ic_bss; 702 703 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 704 rum_update_slot(sc); 705 rum_enable_mrr(sc); 706 rum_set_txpreamble(sc); 707 rum_set_basicrates(sc); 708 rum_set_bssid(sc, ni->ni_bssid); 709 } 710 711 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 712 ic->ic_opmode == IEEE80211_M_IBSS) 713 rum_prepare_beacon(sc); 714 715 if (ic->ic_opmode != IEEE80211_M_MONITOR) 716 rum_enable_tsf_sync(sc); 717 718 if (ic->ic_opmode == IEEE80211_M_STA) { 719 /* fake a join to init the tx rate */ 720 rum_newassoc(ic->ic_bss, 1); 721 722 /* enable automatic rate adaptation in STA mode */ 723 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 724 rum_amrr_start(sc, ni); 725 } 726 727 break; 728 } 729 730 sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); 731 } 732 733 static int 734 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 735 { 736 struct rum_softc *sc = ic->ic_ifp->if_softc; 737 738 /* 739 * XXXSMP: This does not wait for the task, if it is in flight, 740 * to complete. If this code works at all, it must rely on the 741 * kernel lock to serialize with the USB task thread. 742 */ 743 usb_rem_task(sc->sc_udev, &sc->sc_task); 744 callout_stop(&sc->sc_scan_ch); 745 callout_stop(&sc->sc_amrr_ch); 746 747 /* do it in a process context */ 748 sc->sc_state = nstate; 749 sc->sc_arg = arg; 750 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 751 752 return 0; 753 } 754 755 /* quickly determine if a given rate is CCK or OFDM */ 756 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 757 758 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 759 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 760 761 static void 762 rum_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 763 { 764 struct rum_tx_data *data = priv; 765 struct rum_softc *sc = data->sc; 766 struct ifnet *ifp = &sc->sc_if; 767 int s; 768 769 if (status != USBD_NORMAL_COMPLETION) { 770 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 771 return; 772 773 printf("%s: could not transmit buffer: %s\n", 774 device_xname(sc->sc_dev), usbd_errstr(status)); 775 776 if (status == USBD_STALLED) 777 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 778 779 ifp->if_oerrors++; 780 return; 781 } 782 783 s = splnet(); 784 785 ieee80211_free_node(data->ni); 786 data->ni = NULL; 787 788 sc->tx_queued--; 789 ifp->if_opackets++; 790 791 DPRINTFN(10, ("tx done\n")); 792 793 sc->sc_tx_timer = 0; 794 ifp->if_flags &= ~IFF_OACTIVE; 795 rum_start(ifp); 796 797 splx(s); 798 } 799 800 static void 801 rum_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 802 { 803 struct rum_rx_data *data = priv; 804 struct rum_softc *sc = data->sc; 805 struct ieee80211com *ic = &sc->sc_ic; 806 struct ifnet *ifp = &sc->sc_if; 807 struct rum_rx_desc *desc; 808 struct ieee80211_frame *wh; 809 struct ieee80211_node *ni; 810 struct mbuf *mnew, *m; 811 int s, len; 812 813 if (status != USBD_NORMAL_COMPLETION) { 814 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 815 return; 816 817 if (status == USBD_STALLED) 818 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 819 goto skip; 820 } 821 822 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 823 824 if (len < (int)(RT2573_RX_DESC_SIZE + 825 sizeof(struct ieee80211_frame_min))) { 826 DPRINTF(("%s: xfer too short %d\n", device_xname(sc->sc_dev), 827 len)); 828 ifp->if_ierrors++; 829 goto skip; 830 } 831 832 desc = (struct rum_rx_desc *)data->buf; 833 834 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 835 /* 836 * This should not happen since we did not request to receive 837 * those frames when we filled RT2573_TXRX_CSR0. 838 */ 839 DPRINTFN(5, ("CRC error\n")); 840 ifp->if_ierrors++; 841 goto skip; 842 } 843 844 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 845 if (mnew == NULL) { 846 printf("%s: could not allocate rx mbuf\n", 847 device_xname(sc->sc_dev)); 848 ifp->if_ierrors++; 849 goto skip; 850 } 851 852 MCLGET(mnew, M_DONTWAIT); 853 if (!(mnew->m_flags & M_EXT)) { 854 printf("%s: could not allocate rx mbuf cluster\n", 855 device_xname(sc->sc_dev)); 856 m_freem(mnew); 857 ifp->if_ierrors++; 858 goto skip; 859 } 860 861 m = data->m; 862 data->m = mnew; 863 data->buf = mtod(data->m, uint8_t *); 864 865 /* finalize mbuf */ 866 m_set_rcvif(m, ifp); 867 m->m_data = (void *)(desc + 1); 868 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 869 870 s = splnet(); 871 872 if (sc->sc_drvbpf != NULL) { 873 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 874 875 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 876 tap->wr_rate = rum_rxrate(desc); 877 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 878 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 879 tap->wr_antenna = sc->rx_ant; 880 tap->wr_antsignal = desc->rssi; 881 882 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m, BPF_D_IN); 883 } 884 885 wh = mtod(m, struct ieee80211_frame *); 886 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 887 888 /* send the frame to the 802.11 layer */ 889 ieee80211_input(ic, m, ni, desc->rssi, 0); 890 891 /* node is no longer needed */ 892 ieee80211_free_node(ni); 893 894 splx(s); 895 896 DPRINTFN(15, ("rx done\n")); 897 898 skip: /* setup a new transfer */ 899 usbd_setup_xfer(xfer, data, data->buf, MCLBYTES, USBD_SHORT_XFER_OK, 900 USBD_NO_TIMEOUT, rum_rxeof); 901 usbd_transfer(xfer); 902 } 903 904 /* 905 * This function is only used by the Rx radiotap code. It returns the rate at 906 * which a given frame was received. 907 */ 908 static uint8_t 909 rum_rxrate(const struct rum_rx_desc *desc) 910 { 911 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 912 /* reverse function of rum_plcp_signal */ 913 switch (desc->rate) { 914 case 0xb: return 12; 915 case 0xf: return 18; 916 case 0xa: return 24; 917 case 0xe: return 36; 918 case 0x9: return 48; 919 case 0xd: return 72; 920 case 0x8: return 96; 921 case 0xc: return 108; 922 } 923 } else { 924 if (desc->rate == 10) 925 return 2; 926 if (desc->rate == 20) 927 return 4; 928 if (desc->rate == 55) 929 return 11; 930 if (desc->rate == 110) 931 return 22; 932 } 933 return 2; /* should not get there */ 934 } 935 936 /* 937 * Return the expected ack rate for a frame transmitted at rate `rate'. 938 * XXX: this should depend on the destination node basic rate set. 939 */ 940 static int 941 rum_ack_rate(struct ieee80211com *ic, int rate) 942 { 943 switch (rate) { 944 /* CCK rates */ 945 case 2: 946 return 2; 947 case 4: 948 case 11: 949 case 22: 950 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 951 952 /* OFDM rates */ 953 case 12: 954 case 18: 955 return 12; 956 case 24: 957 case 36: 958 return 24; 959 case 48: 960 case 72: 961 case 96: 962 case 108: 963 return 48; 964 } 965 966 /* default to 1Mbps */ 967 return 2; 968 } 969 970 /* 971 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 972 * The function automatically determines the operating mode depending on the 973 * given rate. `flags' indicates whether short preamble is in use or not. 974 */ 975 static uint16_t 976 rum_txtime(int len, int rate, uint32_t flags) 977 { 978 uint16_t txtime; 979 980 if (RUM_RATE_IS_OFDM(rate)) { 981 /* IEEE Std 802.11a-1999, pp. 37 */ 982 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 983 txtime = 16 + 4 + 4 * txtime + 6; 984 } else { 985 /* IEEE Std 802.11b-1999, pp. 28 */ 986 txtime = (16 * len + rate - 1) / rate; 987 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 988 txtime += 72 + 24; 989 else 990 txtime += 144 + 48; 991 } 992 return txtime; 993 } 994 995 static uint8_t 996 rum_plcp_signal(int rate) 997 { 998 switch (rate) { 999 /* CCK rates (returned values are device-dependent) */ 1000 case 2: return 0x0; 1001 case 4: return 0x1; 1002 case 11: return 0x2; 1003 case 22: return 0x3; 1004 1005 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1006 case 12: return 0xb; 1007 case 18: return 0xf; 1008 case 24: return 0xa; 1009 case 36: return 0xe; 1010 case 48: return 0x9; 1011 case 72: return 0xd; 1012 case 96: return 0x8; 1013 case 108: return 0xc; 1014 1015 /* unsupported rates (should not get there) */ 1016 default: return 0xff; 1017 } 1018 } 1019 1020 static void 1021 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1022 uint32_t flags, uint16_t xflags, int len, int rate) 1023 { 1024 struct ieee80211com *ic = &sc->sc_ic; 1025 uint16_t plcp_length; 1026 int remainder; 1027 1028 desc->flags = htole32(flags); 1029 desc->flags |= htole32(RT2573_TX_VALID); 1030 desc->flags |= htole32(len << 16); 1031 1032 desc->xflags = htole16(xflags); 1033 1034 desc->wme = htole16( 1035 RT2573_QID(0) | 1036 RT2573_AIFSN(2) | 1037 RT2573_LOGCWMIN(4) | 1038 RT2573_LOGCWMAX(10)); 1039 1040 /* setup PLCP fields */ 1041 desc->plcp_signal = rum_plcp_signal(rate); 1042 desc->plcp_service = 4; 1043 1044 len += IEEE80211_CRC_LEN; 1045 if (RUM_RATE_IS_OFDM(rate)) { 1046 desc->flags |= htole32(RT2573_TX_OFDM); 1047 1048 plcp_length = len & 0xfff; 1049 desc->plcp_length_hi = plcp_length >> 6; 1050 desc->plcp_length_lo = plcp_length & 0x3f; 1051 } else { 1052 plcp_length = (16 * len + rate - 1) / rate; 1053 if (rate == 22) { 1054 remainder = (16 * len) % 22; 1055 if (remainder != 0 && remainder < 7) 1056 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1057 } 1058 desc->plcp_length_hi = plcp_length >> 8; 1059 desc->plcp_length_lo = plcp_length & 0xff; 1060 1061 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1062 desc->plcp_signal |= 0x08; 1063 } 1064 } 1065 1066 #define RUM_TX_TIMEOUT 5000 1067 1068 static int 1069 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1070 { 1071 struct ieee80211com *ic = &sc->sc_ic; 1072 struct rum_tx_desc *desc; 1073 struct rum_tx_data *data; 1074 struct ieee80211_frame *wh; 1075 struct ieee80211_key *k; 1076 uint32_t flags = 0; 1077 uint16_t dur; 1078 usbd_status error; 1079 int rate, xferlen, pktlen, needrts = 0, needcts = 0; 1080 1081 wh = mtod(m0, struct ieee80211_frame *); 1082 1083 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1084 k = ieee80211_crypto_encap(ic, ni, m0); 1085 if (k == NULL) { 1086 m_freem(m0); 1087 return ENOBUFS; 1088 } 1089 1090 /* packet header may have moved, reset our local pointer */ 1091 wh = mtod(m0, struct ieee80211_frame *); 1092 } 1093 1094 /* compute actual packet length (including CRC and crypto overhead) */ 1095 pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN; 1096 1097 /* pickup a rate */ 1098 if (IEEE80211_IS_MULTICAST(wh->i_addr1) || 1099 ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1100 IEEE80211_FC0_TYPE_MGT)) { 1101 /* mgmt/multicast frames are sent at the lowest avail. rate */ 1102 rate = ni->ni_rates.rs_rates[0]; 1103 } else if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 1104 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1105 } else 1106 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1107 if (rate == 0) 1108 rate = 2; /* XXX should not happen */ 1109 rate &= IEEE80211_RATE_VAL; 1110 1111 /* check if RTS/CTS or CTS-to-self protection must be used */ 1112 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1113 /* multicast frames are not sent at OFDM rates in 802.11b/g */ 1114 if (pktlen > ic->ic_rtsthreshold) { 1115 needrts = 1; /* RTS/CTS based on frame length */ 1116 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1117 RUM_RATE_IS_OFDM(rate)) { 1118 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 1119 needcts = 1; /* CTS-to-self */ 1120 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 1121 needrts = 1; /* RTS/CTS */ 1122 } 1123 } 1124 if (needrts || needcts) { 1125 struct mbuf *mprot; 1126 int protrate, ackrate; 1127 1128 protrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1129 ackrate = rum_ack_rate(ic, rate); 1130 1131 dur = rum_txtime(pktlen, rate, ic->ic_flags) + 1132 rum_txtime(RUM_ACK_SIZE, ackrate, ic->ic_flags) + 1133 2 * sc->sifs; 1134 if (needrts) { 1135 dur += rum_txtime(RUM_CTS_SIZE, rum_ack_rate(ic, 1136 protrate), ic->ic_flags) + sc->sifs; 1137 mprot = ieee80211_get_rts(ic, wh, dur); 1138 } else { 1139 mprot = ieee80211_get_cts_to_self(ic, dur); 1140 } 1141 if (mprot == NULL) { 1142 aprint_error_dev(sc->sc_dev, 1143 "couldn't allocate protection frame\n"); 1144 m_freem(m0); 1145 return ENOBUFS; 1146 } 1147 1148 data = &sc->tx_data[sc->tx_cur]; 1149 desc = (struct rum_tx_desc *)data->buf; 1150 1151 /* avoid multiple free() of the same node for each fragment */ 1152 data->ni = ieee80211_ref_node(ni); 1153 1154 m_copydata(mprot, 0, mprot->m_pkthdr.len, 1155 data->buf + RT2573_TX_DESC_SIZE); 1156 rum_setup_tx_desc(sc, desc, 1157 (needrts ? RT2573_TX_NEED_ACK : 0) | RT2573_TX_MORE_FRAG, 1158 0, mprot->m_pkthdr.len, protrate); 1159 1160 /* no roundup necessary here */ 1161 xferlen = RT2573_TX_DESC_SIZE + mprot->m_pkthdr.len; 1162 1163 /* XXX may want to pass the protection frame to BPF */ 1164 1165 /* mbuf is no longer needed */ 1166 m_freem(mprot); 1167 1168 usbd_setup_xfer(data->xfer, data, data->buf, 1169 xferlen, USBD_FORCE_SHORT_XFER, 1170 RUM_TX_TIMEOUT, rum_txeof); 1171 error = usbd_transfer(data->xfer); 1172 if (error != USBD_NORMAL_COMPLETION && 1173 error != USBD_IN_PROGRESS) { 1174 m_freem(m0); 1175 return error; 1176 } 1177 1178 sc->tx_queued++; 1179 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1180 1181 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1182 } 1183 1184 data = &sc->tx_data[sc->tx_cur]; 1185 desc = (struct rum_tx_desc *)data->buf; 1186 1187 data->ni = ni; 1188 1189 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1190 flags |= RT2573_TX_NEED_ACK; 1191 1192 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1193 ic->ic_flags) + sc->sifs; 1194 *(uint16_t *)wh->i_dur = htole16(dur); 1195 1196 /* tell hardware to set timestamp in probe responses */ 1197 if ((wh->i_fc[0] & 1198 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1199 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1200 flags |= RT2573_TX_TIMESTAMP; 1201 } 1202 1203 if (sc->sc_drvbpf != NULL) { 1204 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1205 1206 tap->wt_flags = 0; 1207 tap->wt_rate = rate; 1208 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1209 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1210 tap->wt_antenna = sc->tx_ant; 1211 1212 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0, BPF_D_OUT); 1213 } 1214 1215 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1216 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1217 1218 /* align end on a 4-bytes boundary */ 1219 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1220 1221 /* 1222 * No space left in the last URB to store the extra 4 bytes, force 1223 * sending of another URB. 1224 */ 1225 if ((xferlen % 64) == 0) 1226 xferlen += 4; 1227 1228 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1229 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1230 rate, xferlen)); 1231 1232 /* mbuf is no longer needed */ 1233 m_freem(m0); 1234 1235 usbd_setup_xfer(data->xfer, data, data->buf, xferlen, 1236 USBD_FORCE_SHORT_XFER, RUM_TX_TIMEOUT, rum_txeof); 1237 error = usbd_transfer(data->xfer); 1238 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1239 return error; 1240 1241 sc->tx_queued++; 1242 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1243 1244 return 0; 1245 } 1246 1247 static void 1248 rum_start(struct ifnet *ifp) 1249 { 1250 struct rum_softc *sc = ifp->if_softc; 1251 struct ieee80211com *ic = &sc->sc_ic; 1252 struct ether_header *eh; 1253 struct ieee80211_node *ni; 1254 struct mbuf *m0; 1255 1256 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1257 return; 1258 1259 for (;;) { 1260 IF_POLL(&ic->ic_mgtq, m0); 1261 if (m0 != NULL) { 1262 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1263 ifp->if_flags |= IFF_OACTIVE; 1264 break; 1265 } 1266 IF_DEQUEUE(&ic->ic_mgtq, m0); 1267 1268 ni = M_GETCTX(m0, struct ieee80211_node *); 1269 M_CLEARCTX(m0); 1270 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 1271 if (rum_tx_data(sc, m0, ni) != 0) 1272 break; 1273 1274 } else { 1275 if (ic->ic_state != IEEE80211_S_RUN) 1276 break; 1277 IFQ_POLL(&ifp->if_snd, m0); 1278 if (m0 == NULL) 1279 break; 1280 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1281 ifp->if_flags |= IFF_OACTIVE; 1282 break; 1283 } 1284 IFQ_DEQUEUE(&ifp->if_snd, m0); 1285 if (m0->m_len < (int)sizeof(struct ether_header) && 1286 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1287 continue; 1288 1289 eh = mtod(m0, struct ether_header *); 1290 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1291 if (ni == NULL) { 1292 m_freem(m0); 1293 continue; 1294 } 1295 bpf_mtap(ifp, m0, BPF_D_OUT); 1296 m0 = ieee80211_encap(ic, m0, ni); 1297 if (m0 == NULL) { 1298 ieee80211_free_node(ni); 1299 continue; 1300 } 1301 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 1302 if (rum_tx_data(sc, m0, ni) != 0) { 1303 ieee80211_free_node(ni); 1304 ifp->if_oerrors++; 1305 break; 1306 } 1307 } 1308 1309 sc->sc_tx_timer = 5; 1310 ifp->if_timer = 1; 1311 } 1312 } 1313 1314 static void 1315 rum_watchdog(struct ifnet *ifp) 1316 { 1317 struct rum_softc *sc = ifp->if_softc; 1318 struct ieee80211com *ic = &sc->sc_ic; 1319 1320 ifp->if_timer = 0; 1321 1322 if (sc->sc_tx_timer > 0) { 1323 if (--sc->sc_tx_timer == 0) { 1324 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1325 /*rum_init(ifp); XXX needs a process context! */ 1326 ifp->if_oerrors++; 1327 return; 1328 } 1329 ifp->if_timer = 1; 1330 } 1331 1332 ieee80211_watchdog(ic); 1333 } 1334 1335 static int 1336 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1337 { 1338 #define IS_RUNNING(ifp) \ 1339 (((ifp)->if_flags & IFF_UP) && ((ifp)->if_flags & IFF_RUNNING)) 1340 1341 struct rum_softc *sc = ifp->if_softc; 1342 struct ieee80211com *ic = &sc->sc_ic; 1343 int s, error = 0; 1344 1345 s = splnet(); 1346 1347 switch (cmd) { 1348 case SIOCSIFFLAGS: 1349 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1350 break; 1351 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1352 case IFF_UP|IFF_RUNNING: 1353 rum_update_promisc(sc); 1354 break; 1355 case IFF_UP: 1356 rum_init(ifp); 1357 break; 1358 case IFF_RUNNING: 1359 rum_stop(ifp, 1); 1360 break; 1361 case 0: 1362 break; 1363 } 1364 break; 1365 1366 case SIOCADDMULTI: 1367 case SIOCDELMULTI: 1368 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1369 error = 0; 1370 } 1371 break; 1372 1373 default: 1374 error = ieee80211_ioctl(ic, cmd, data); 1375 } 1376 1377 if (error == ENETRESET) { 1378 if (IS_RUNNING(ifp) && 1379 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1380 rum_init(ifp); 1381 error = 0; 1382 } 1383 1384 splx(s); 1385 1386 return error; 1387 #undef IS_RUNNING 1388 } 1389 1390 static void 1391 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1392 { 1393 usb_device_request_t req; 1394 usbd_status error; 1395 1396 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1397 req.bRequest = RT2573_READ_EEPROM; 1398 USETW(req.wValue, 0); 1399 USETW(req.wIndex, addr); 1400 USETW(req.wLength, len); 1401 1402 error = usbd_do_request(sc->sc_udev, &req, buf); 1403 if (error != 0) { 1404 printf("%s: could not read EEPROM: %s\n", 1405 device_xname(sc->sc_dev), usbd_errstr(error)); 1406 } 1407 } 1408 1409 static uint32_t 1410 rum_read(struct rum_softc *sc, uint16_t reg) 1411 { 1412 uint32_t val; 1413 1414 rum_read_multi(sc, reg, &val, sizeof(val)); 1415 1416 return le32toh(val); 1417 } 1418 1419 static void 1420 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1421 { 1422 usb_device_request_t req; 1423 usbd_status error; 1424 1425 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1426 req.bRequest = RT2573_READ_MULTI_MAC; 1427 USETW(req.wValue, 0); 1428 USETW(req.wIndex, reg); 1429 USETW(req.wLength, len); 1430 1431 error = usbd_do_request(sc->sc_udev, &req, buf); 1432 if (error != 0) { 1433 printf("%s: could not multi read MAC register: %s\n", 1434 device_xname(sc->sc_dev), usbd_errstr(error)); 1435 } 1436 } 1437 1438 static void 1439 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1440 { 1441 uint32_t tmp = htole32(val); 1442 1443 rum_write_multi(sc, reg, &tmp, sizeof(tmp)); 1444 } 1445 1446 static void 1447 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1448 { 1449 usb_device_request_t req; 1450 usbd_status error; 1451 int offset; 1452 1453 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1454 req.bRequest = RT2573_WRITE_MULTI_MAC; 1455 USETW(req.wValue, 0); 1456 1457 /* write at most 64 bytes at a time */ 1458 for (offset = 0; offset < len; offset += 64) { 1459 USETW(req.wIndex, reg + offset); 1460 USETW(req.wLength, MIN(len - offset, 64)); 1461 1462 error = usbd_do_request(sc->sc_udev, &req, (char *)buf + offset); 1463 if (error != 0) { 1464 printf("%s: could not multi write MAC register: %s\n", 1465 device_xname(sc->sc_dev), usbd_errstr(error)); 1466 } 1467 } 1468 } 1469 1470 static void 1471 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1472 { 1473 uint32_t tmp; 1474 int ntries; 1475 1476 for (ntries = 0; ntries < 5; ntries++) { 1477 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1478 break; 1479 } 1480 if (ntries == 5) { 1481 printf("%s: could not write to BBP\n", device_xname(sc->sc_dev)); 1482 return; 1483 } 1484 1485 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1486 rum_write(sc, RT2573_PHY_CSR3, tmp); 1487 } 1488 1489 static uint8_t 1490 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1491 { 1492 uint32_t val; 1493 int ntries; 1494 1495 for (ntries = 0; ntries < 5; ntries++) { 1496 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1497 break; 1498 } 1499 if (ntries == 5) { 1500 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1501 return 0; 1502 } 1503 1504 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1505 rum_write(sc, RT2573_PHY_CSR3, val); 1506 1507 for (ntries = 0; ntries < 100; ntries++) { 1508 val = rum_read(sc, RT2573_PHY_CSR3); 1509 if (!(val & RT2573_BBP_BUSY)) 1510 return val & 0xff; 1511 DELAY(1); 1512 } 1513 1514 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1515 return 0; 1516 } 1517 1518 static void 1519 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1520 { 1521 uint32_t tmp; 1522 int ntries; 1523 1524 for (ntries = 0; ntries < 5; ntries++) { 1525 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1526 break; 1527 } 1528 if (ntries == 5) { 1529 printf("%s: could not write to RF\n", device_xname(sc->sc_dev)); 1530 return; 1531 } 1532 1533 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1534 (reg & 3); 1535 rum_write(sc, RT2573_PHY_CSR4, tmp); 1536 1537 /* remember last written value in sc */ 1538 sc->rf_regs[reg] = val; 1539 1540 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1541 } 1542 1543 static void 1544 rum_select_antenna(struct rum_softc *sc) 1545 { 1546 uint8_t bbp4, bbp77; 1547 uint32_t tmp; 1548 1549 bbp4 = rum_bbp_read(sc, 4); 1550 bbp77 = rum_bbp_read(sc, 77); 1551 1552 /* TBD */ 1553 1554 /* make sure Rx is disabled before switching antenna */ 1555 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1556 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1557 1558 rum_bbp_write(sc, 4, bbp4); 1559 rum_bbp_write(sc, 77, bbp77); 1560 1561 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1562 } 1563 1564 /* 1565 * Enable multi-rate retries for frames sent at OFDM rates. 1566 * In 802.11b/g mode, allow fallback to CCK rates. 1567 */ 1568 static void 1569 rum_enable_mrr(struct rum_softc *sc) 1570 { 1571 struct ieee80211com *ic = &sc->sc_ic; 1572 uint32_t tmp; 1573 1574 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1575 1576 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1577 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1578 tmp |= RT2573_MRR_CCK_FALLBACK; 1579 tmp |= RT2573_MRR_ENABLED; 1580 1581 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1582 } 1583 1584 static void 1585 rum_set_txpreamble(struct rum_softc *sc) 1586 { 1587 uint32_t tmp; 1588 1589 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1590 1591 tmp &= ~RT2573_SHORT_PREAMBLE; 1592 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1593 tmp |= RT2573_SHORT_PREAMBLE; 1594 1595 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1596 } 1597 1598 static void 1599 rum_set_basicrates(struct rum_softc *sc) 1600 { 1601 struct ieee80211com *ic = &sc->sc_ic; 1602 1603 /* update basic rate set */ 1604 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1605 /* 11b basic rates: 1, 2Mbps */ 1606 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1607 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1608 /* 11a basic rates: 6, 12, 24Mbps */ 1609 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1610 } else { 1611 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1612 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1613 } 1614 } 1615 1616 /* 1617 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1618 * driver. 1619 */ 1620 static void 1621 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1622 { 1623 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1624 uint32_t tmp; 1625 1626 /* update all BBP registers that depend on the band */ 1627 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1628 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1629 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1630 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1631 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1632 } 1633 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1634 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1635 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1636 } 1637 1638 sc->bbp17 = bbp17; 1639 rum_bbp_write(sc, 17, bbp17); 1640 rum_bbp_write(sc, 96, bbp96); 1641 rum_bbp_write(sc, 104, bbp104); 1642 1643 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1644 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1645 rum_bbp_write(sc, 75, 0x80); 1646 rum_bbp_write(sc, 86, 0x80); 1647 rum_bbp_write(sc, 88, 0x80); 1648 } 1649 1650 rum_bbp_write(sc, 35, bbp35); 1651 rum_bbp_write(sc, 97, bbp97); 1652 rum_bbp_write(sc, 98, bbp98); 1653 1654 tmp = rum_read(sc, RT2573_PHY_CSR0); 1655 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1656 if (IEEE80211_IS_CHAN_2GHZ(c)) 1657 tmp |= RT2573_PA_PE_2GHZ; 1658 else 1659 tmp |= RT2573_PA_PE_5GHZ; 1660 rum_write(sc, RT2573_PHY_CSR0, tmp); 1661 1662 /* 802.11a uses a 16 microseconds short interframe space */ 1663 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1664 } 1665 1666 static void 1667 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1668 { 1669 struct ieee80211com *ic = &sc->sc_ic; 1670 const struct rfprog *rfprog; 1671 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1672 int8_t power; 1673 u_int i, chan; 1674 1675 chan = ieee80211_chan2ieee(ic, c); 1676 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1677 return; 1678 1679 /* select the appropriate RF settings based on what EEPROM says */ 1680 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1681 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1682 1683 /* find the settings for this channel (we know it exists) */ 1684 for (i = 0; rfprog[i].chan != chan; i++); 1685 1686 power = sc->txpow[i]; 1687 if (power < 0) { 1688 bbp94 += power; 1689 power = 0; 1690 } else if (power > 31) { 1691 bbp94 += power - 31; 1692 power = 31; 1693 } 1694 1695 /* 1696 * If we are switching from the 2GHz band to the 5GHz band or 1697 * vice-versa, BBP registers need to be reprogrammed. 1698 */ 1699 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1700 rum_select_band(sc, c); 1701 rum_select_antenna(sc); 1702 } 1703 ic->ic_curchan = c; 1704 1705 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1706 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1707 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1708 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1709 1710 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1711 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1712 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1713 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1714 1715 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1716 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1717 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1718 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1719 1720 DELAY(10); 1721 1722 /* enable smart mode for MIMO-capable RFs */ 1723 bbp3 = rum_bbp_read(sc, 3); 1724 1725 bbp3 &= ~RT2573_SMART_MODE; 1726 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1727 bbp3 |= RT2573_SMART_MODE; 1728 1729 rum_bbp_write(sc, 3, bbp3); 1730 1731 if (bbp94 != RT2573_BBPR94_DEFAULT) 1732 rum_bbp_write(sc, 94, bbp94); 1733 } 1734 1735 /* 1736 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1737 * and HostAP operating modes. 1738 */ 1739 static void 1740 rum_enable_tsf_sync(struct rum_softc *sc) 1741 { 1742 struct ieee80211com *ic = &sc->sc_ic; 1743 uint32_t tmp; 1744 1745 if (ic->ic_opmode != IEEE80211_M_STA) { 1746 /* 1747 * Change default 16ms TBTT adjustment to 8ms. 1748 * Must be done before enabling beacon generation. 1749 */ 1750 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1751 } 1752 1753 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1754 1755 /* set beacon interval (in 1/16ms unit) */ 1756 tmp |= ic->ic_bss->ni_intval * 16; 1757 1758 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1759 if (ic->ic_opmode == IEEE80211_M_STA) 1760 tmp |= RT2573_TSF_MODE(1); 1761 else 1762 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1763 1764 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1765 } 1766 1767 static void 1768 rum_update_slot(struct rum_softc *sc) 1769 { 1770 struct ieee80211com *ic = &sc->sc_ic; 1771 uint8_t slottime; 1772 uint32_t tmp; 1773 1774 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1775 1776 tmp = rum_read(sc, RT2573_MAC_CSR9); 1777 tmp = (tmp & ~0xff) | slottime; 1778 rum_write(sc, RT2573_MAC_CSR9, tmp); 1779 1780 DPRINTF(("setting slot time to %uus\n", slottime)); 1781 } 1782 1783 static void 1784 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1785 { 1786 uint32_t tmp; 1787 1788 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1789 rum_write(sc, RT2573_MAC_CSR4, tmp); 1790 1791 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1792 rum_write(sc, RT2573_MAC_CSR5, tmp); 1793 } 1794 1795 static void 1796 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1797 { 1798 uint32_t tmp; 1799 1800 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1801 rum_write(sc, RT2573_MAC_CSR2, tmp); 1802 1803 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1804 rum_write(sc, RT2573_MAC_CSR3, tmp); 1805 } 1806 1807 static void 1808 rum_update_promisc(struct rum_softc *sc) 1809 { 1810 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1811 uint32_t tmp; 1812 1813 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1814 1815 tmp &= ~RT2573_DROP_NOT_TO_ME; 1816 if (!(ifp->if_flags & IFF_PROMISC)) 1817 tmp |= RT2573_DROP_NOT_TO_ME; 1818 1819 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1820 1821 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1822 "entering" : "leaving")); 1823 } 1824 1825 static const char * 1826 rum_get_rf(int rev) 1827 { 1828 switch (rev) { 1829 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1830 case RT2573_RF_2528: return "RT2528"; 1831 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1832 case RT2573_RF_5226: return "RT5226"; 1833 default: return "unknown"; 1834 } 1835 } 1836 1837 static void 1838 rum_read_eeprom(struct rum_softc *sc) 1839 { 1840 struct ieee80211com *ic = &sc->sc_ic; 1841 uint16_t val; 1842 #ifdef RUM_DEBUG 1843 int i; 1844 #endif 1845 1846 /* read MAC/BBP type */ 1847 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1848 sc->macbbp_rev = le16toh(val); 1849 1850 /* read MAC address */ 1851 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1852 1853 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1854 val = le16toh(val); 1855 sc->rf_rev = (val >> 11) & 0x1f; 1856 sc->hw_radio = (val >> 10) & 0x1; 1857 sc->rx_ant = (val >> 4) & 0x3; 1858 sc->tx_ant = (val >> 2) & 0x3; 1859 sc->nb_ant = val & 0x3; 1860 1861 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1862 1863 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1864 val = le16toh(val); 1865 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1866 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1867 1868 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1869 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1870 1871 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1872 val = le16toh(val); 1873 if ((val & 0xff) != 0xff) 1874 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1875 1876 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1877 val = le16toh(val); 1878 if ((val & 0xff) != 0xff) 1879 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1880 1881 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1882 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1883 1884 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1885 val = le16toh(val); 1886 if ((val & 0xff) != 0xff) 1887 sc->rffreq = val & 0xff; 1888 1889 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1890 1891 /* read Tx power for all a/b/g channels */ 1892 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1893 /* XXX default Tx power for 802.11a channels */ 1894 memset(sc->txpow + 14, 24, sizeof(sc->txpow) - 14); 1895 #ifdef RUM_DEBUG 1896 for (i = 0; i < 14; i++) 1897 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1898 #endif 1899 1900 /* read default values for BBP registers */ 1901 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1902 #ifdef RUM_DEBUG 1903 for (i = 0; i < 14; i++) { 1904 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1905 continue; 1906 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1907 sc->bbp_prom[i].val)); 1908 } 1909 #endif 1910 } 1911 1912 static int 1913 rum_bbp_init(struct rum_softc *sc) 1914 { 1915 unsigned int i, ntries; 1916 uint8_t val; 1917 1918 /* wait for BBP to be ready */ 1919 for (ntries = 0; ntries < 100; ntries++) { 1920 val = rum_bbp_read(sc, 0); 1921 if (val != 0 && val != 0xff) 1922 break; 1923 DELAY(1000); 1924 } 1925 if (ntries == 100) { 1926 printf("%s: timeout waiting for BBP\n", 1927 device_xname(sc->sc_dev)); 1928 return EIO; 1929 } 1930 1931 /* initialize BBP registers to default values */ 1932 for (i = 0; i < __arraycount(rum_def_bbp); i++) 1933 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1934 1935 /* write vendor-specific BBP values (from EEPROM) */ 1936 for (i = 0; i < 16; i++) { 1937 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1938 continue; 1939 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1940 } 1941 1942 return 0; 1943 } 1944 1945 static int 1946 rum_init(struct ifnet *ifp) 1947 { 1948 struct rum_softc *sc = ifp->if_softc; 1949 struct ieee80211com *ic = &sc->sc_ic; 1950 uint32_t tmp; 1951 usbd_status error = 0; 1952 unsigned int i, ntries; 1953 1954 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1955 if (rum_attachhook(sc)) 1956 goto fail; 1957 } 1958 1959 rum_stop(ifp, 0); 1960 1961 /* initialize MAC registers to default values */ 1962 for (i = 0; i < __arraycount(rum_def_mac); i++) 1963 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1964 1965 /* set host ready */ 1966 rum_write(sc, RT2573_MAC_CSR1, 3); 1967 rum_write(sc, RT2573_MAC_CSR1, 0); 1968 1969 /* wait for BBP/RF to wakeup */ 1970 for (ntries = 0; ntries < 1000; ntries++) { 1971 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1972 break; 1973 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1974 DELAY(1000); 1975 } 1976 if (ntries == 1000) { 1977 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1978 device_xname(sc->sc_dev)); 1979 goto fail; 1980 } 1981 1982 if ((error = rum_bbp_init(sc)) != 0) 1983 goto fail; 1984 1985 /* select default channel */ 1986 rum_select_band(sc, ic->ic_curchan); 1987 rum_select_antenna(sc); 1988 rum_set_chan(sc, ic->ic_curchan); 1989 1990 /* clear STA registers */ 1991 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); 1992 1993 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 1994 rum_set_macaddr(sc, ic->ic_myaddr); 1995 1996 /* initialize ASIC */ 1997 rum_write(sc, RT2573_MAC_CSR1, 4); 1998 1999 /* 2000 * Allocate xfer for AMRR statistics requests. 2001 */ 2002 struct usbd_pipe *pipe0 = usbd_get_pipe0(sc->sc_udev); 2003 error = usbd_create_xfer(pipe0, sizeof(sc->sta), 0, 0, 2004 &sc->amrr_xfer); 2005 if (error) { 2006 printf("%s: could not allocate AMRR xfer\n", 2007 device_xname(sc->sc_dev)); 2008 goto fail; 2009 } 2010 2011 /* 2012 * Open Tx and Rx USB bulk pipes. 2013 */ 2014 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2015 &sc->sc_tx_pipeh); 2016 if (error != 0) { 2017 printf("%s: could not open Tx pipe: %s\n", 2018 device_xname(sc->sc_dev), usbd_errstr(error)); 2019 goto fail; 2020 } 2021 2022 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2023 &sc->sc_rx_pipeh); 2024 if (error != 0) { 2025 printf("%s: could not open Rx pipe: %s\n", 2026 device_xname(sc->sc_dev), usbd_errstr(error)); 2027 goto fail; 2028 } 2029 2030 /* 2031 * Allocate Tx and Rx xfer queues. 2032 */ 2033 error = rum_alloc_tx_list(sc); 2034 if (error != 0) { 2035 printf("%s: could not allocate Tx list\n", 2036 device_xname(sc->sc_dev)); 2037 goto fail; 2038 } 2039 2040 error = rum_alloc_rx_list(sc); 2041 if (error != 0) { 2042 printf("%s: could not allocate Rx list\n", 2043 device_xname(sc->sc_dev)); 2044 goto fail; 2045 } 2046 2047 /* 2048 * Start up the receive pipe. 2049 */ 2050 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2051 struct rum_rx_data *data; 2052 2053 data = &sc->rx_data[i]; 2054 2055 usbd_setup_xfer(data->xfer, data, data->buf, MCLBYTES, 2056 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2057 error = usbd_transfer(data->xfer); 2058 if (error != USBD_NORMAL_COMPLETION && 2059 error != USBD_IN_PROGRESS) { 2060 printf("%s: could not queue Rx transfer\n", 2061 device_xname(sc->sc_dev)); 2062 goto fail; 2063 } 2064 } 2065 2066 /* update Rx filter */ 2067 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2068 2069 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2070 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2071 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2072 RT2573_DROP_ACKCTS; 2073 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2074 tmp |= RT2573_DROP_TODS; 2075 if (!(ifp->if_flags & IFF_PROMISC)) 2076 tmp |= RT2573_DROP_NOT_TO_ME; 2077 } 2078 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2079 2080 ifp->if_flags &= ~IFF_OACTIVE; 2081 ifp->if_flags |= IFF_RUNNING; 2082 2083 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2084 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2085 else 2086 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2087 2088 return 0; 2089 2090 fail: rum_stop(ifp, 1); 2091 return error; 2092 } 2093 2094 static void 2095 rum_stop(struct ifnet *ifp, int disable) 2096 { 2097 struct rum_softc *sc = ifp->if_softc; 2098 struct ieee80211com *ic = &sc->sc_ic; 2099 uint32_t tmp; 2100 2101 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2102 2103 sc->sc_tx_timer = 0; 2104 ifp->if_timer = 0; 2105 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2106 2107 /* disable Rx */ 2108 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2109 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2110 2111 /* reset ASIC */ 2112 rum_write(sc, RT2573_MAC_CSR1, 3); 2113 rum_write(sc, RT2573_MAC_CSR1, 0); 2114 2115 if (sc->amrr_xfer != NULL) { 2116 usbd_destroy_xfer(sc->amrr_xfer); 2117 sc->amrr_xfer = NULL; 2118 } 2119 2120 if (sc->sc_rx_pipeh != NULL) { 2121 usbd_abort_pipe(sc->sc_rx_pipeh); 2122 } 2123 2124 if (sc->sc_tx_pipeh != NULL) { 2125 usbd_abort_pipe(sc->sc_tx_pipeh); 2126 } 2127 2128 rum_free_rx_list(sc); 2129 rum_free_tx_list(sc); 2130 2131 if (sc->sc_rx_pipeh != NULL) { 2132 usbd_close_pipe(sc->sc_rx_pipeh); 2133 sc->sc_rx_pipeh = NULL; 2134 } 2135 2136 if (sc->sc_tx_pipeh != NULL) { 2137 usbd_close_pipe(sc->sc_tx_pipeh); 2138 sc->sc_tx_pipeh = NULL; 2139 } 2140 } 2141 2142 static int 2143 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2144 { 2145 usb_device_request_t req; 2146 uint16_t reg = RT2573_MCU_CODE_BASE; 2147 usbd_status error; 2148 2149 /* copy firmware image into NIC */ 2150 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2151 rum_write(sc, reg, UGETDW(ucode)); 2152 2153 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2154 req.bRequest = RT2573_MCU_CNTL; 2155 USETW(req.wValue, RT2573_MCU_RUN); 2156 USETW(req.wIndex, 0); 2157 USETW(req.wLength, 0); 2158 2159 error = usbd_do_request(sc->sc_udev, &req, NULL); 2160 if (error != 0) { 2161 printf("%s: could not run firmware: %s\n", 2162 device_xname(sc->sc_dev), usbd_errstr(error)); 2163 } 2164 return error; 2165 } 2166 2167 static int 2168 rum_prepare_beacon(struct rum_softc *sc) 2169 { 2170 struct ieee80211com *ic = &sc->sc_ic; 2171 struct rum_tx_desc desc; 2172 struct mbuf *m0; 2173 int rate; 2174 2175 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2176 if (m0 == NULL) { 2177 aprint_error_dev(sc->sc_dev, 2178 "could not allocate beacon frame\n"); 2179 return ENOBUFS; 2180 } 2181 2182 /* send beacons at the lowest available rate */ 2183 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2184 2185 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2186 m0->m_pkthdr.len, rate); 2187 2188 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2189 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2190 2191 /* copy beacon header and payload into NIC memory */ 2192 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2193 m0->m_pkthdr.len); 2194 2195 m_freem(m0); 2196 2197 return 0; 2198 } 2199 2200 static void 2201 rum_newassoc(struct ieee80211_node *ni, int isnew) 2202 { 2203 /* start with lowest Tx rate */ 2204 ni->ni_txrate = 0; 2205 } 2206 2207 static void 2208 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2209 { 2210 int i; 2211 2212 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2213 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); 2214 2215 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2216 2217 /* set rate to some reasonable initial value */ 2218 for (i = ni->ni_rates.rs_nrates - 1; 2219 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2220 i--); 2221 ni->ni_txrate = i; 2222 2223 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2224 } 2225 2226 static void 2227 rum_amrr_timeout(void *arg) 2228 { 2229 struct rum_softc *sc = arg; 2230 usb_device_request_t req; 2231 2232 /* 2233 * Asynchronously read statistic registers (cleared by read). 2234 */ 2235 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2236 req.bRequest = RT2573_READ_MULTI_MAC; 2237 USETW(req.wValue, 0); 2238 USETW(req.wIndex, RT2573_STA_CSR0); 2239 USETW(req.wLength, sizeof(sc->sta)); 2240 2241 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2242 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof(sc->sta), 0, 2243 rum_amrr_update); 2244 (void)usbd_transfer(sc->amrr_xfer); 2245 } 2246 2247 static void 2248 rum_amrr_update(struct usbd_xfer *xfer, void *priv, 2249 usbd_status status) 2250 { 2251 struct rum_softc *sc = (struct rum_softc *)priv; 2252 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2253 2254 if (status != USBD_NORMAL_COMPLETION) { 2255 printf("%s: could not retrieve Tx statistics - cancelling " 2256 "automatic rate control\n", device_xname(sc->sc_dev)); 2257 return; 2258 } 2259 2260 /* count TX retry-fail as Tx errors */ 2261 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2262 2263 sc->amn.amn_retrycnt = 2264 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2265 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2266 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2267 2268 sc->amn.amn_txcnt = 2269 sc->amn.amn_retrycnt + 2270 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2271 2272 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2273 2274 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2275 } 2276 2277 static int 2278 rum_activate(device_t self, enum devact act) 2279 { 2280 switch (act) { 2281 case DVACT_DEACTIVATE: 2282 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2283 return 0; 2284 default: 2285 return 0; 2286 } 2287 } 2288 2289 MODULE(MODULE_CLASS_DRIVER, if_rum, NULL); 2290 2291 #ifdef _MODULE 2292 #include "ioconf.c" 2293 #endif 2294 2295 static int 2296 if_rum_modcmd(modcmd_t cmd, void *aux) 2297 { 2298 int error = 0; 2299 2300 switch (cmd) { 2301 case MODULE_CMD_INIT: 2302 #ifdef _MODULE 2303 error = config_init_component(cfdriver_ioconf_rum, 2304 cfattach_ioconf_rum, cfdata_ioconf_rum); 2305 #endif 2306 return error; 2307 case MODULE_CMD_FINI: 2308 #ifdef _MODULE 2309 error = config_fini_component(cfdriver_ioconf_rum, 2310 cfattach_ioconf_rum, cfdata_ioconf_rum); 2311 #endif 2312 return error; 2313 default: 2314 return ENOTTY; 2315 } 2316 } 2317