1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.57 2016/11/25 12:56:29 skrll 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 1.57 2016/11/25 12:56:29 skrll 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_ZYXEL, USB_PRODUCT_ZYXEL_RT2573 } 142 }; 143 144 static int rum_attachhook(void *); 145 static int rum_alloc_tx_list(struct rum_softc *); 146 static void rum_free_tx_list(struct rum_softc *); 147 static int rum_alloc_rx_list(struct rum_softc *); 148 static void rum_free_rx_list(struct rum_softc *); 149 static int rum_media_change(struct ifnet *); 150 static void rum_next_scan(void *); 151 static void rum_task(void *); 152 static int rum_newstate(struct ieee80211com *, 153 enum ieee80211_state, int); 154 static void rum_txeof(struct usbd_xfer *, void *, 155 usbd_status); 156 static void rum_rxeof(struct usbd_xfer *, void *, 157 usbd_status); 158 static uint8_t rum_rxrate(const struct rum_rx_desc *); 159 static int rum_ack_rate(struct ieee80211com *, int); 160 static uint16_t rum_txtime(int, int, uint32_t); 161 static uint8_t rum_plcp_signal(int); 162 static void rum_setup_tx_desc(struct rum_softc *, 163 struct rum_tx_desc *, uint32_t, uint16_t, int, 164 int); 165 static int rum_tx_data(struct rum_softc *, struct mbuf *, 166 struct ieee80211_node *); 167 static void rum_start(struct ifnet *); 168 static void rum_watchdog(struct ifnet *); 169 static int rum_ioctl(struct ifnet *, u_long, void *); 170 static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 171 int); 172 static uint32_t rum_read(struct rum_softc *, uint16_t); 173 static void rum_read_multi(struct rum_softc *, uint16_t, void *, 174 int); 175 static void rum_write(struct rum_softc *, uint16_t, uint32_t); 176 static void rum_write_multi(struct rum_softc *, uint16_t, void *, 177 size_t); 178 static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 179 static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 180 static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 181 static void rum_select_antenna(struct rum_softc *); 182 static void rum_enable_mrr(struct rum_softc *); 183 static void rum_set_txpreamble(struct rum_softc *); 184 static void rum_set_basicrates(struct rum_softc *); 185 static void rum_select_band(struct rum_softc *, 186 struct ieee80211_channel *); 187 static void rum_set_chan(struct rum_softc *, 188 struct ieee80211_channel *); 189 static void rum_enable_tsf_sync(struct rum_softc *); 190 static void rum_update_slot(struct rum_softc *); 191 static void rum_set_bssid(struct rum_softc *, const uint8_t *); 192 static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 193 static void rum_update_promisc(struct rum_softc *); 194 static const char *rum_get_rf(int); 195 static void rum_read_eeprom(struct rum_softc *); 196 static int rum_bbp_init(struct rum_softc *); 197 static int rum_init(struct ifnet *); 198 static void rum_stop(struct ifnet *, int); 199 static int rum_load_microcode(struct rum_softc *, const u_char *, 200 size_t); 201 static int rum_prepare_beacon(struct rum_softc *); 202 static void rum_newassoc(struct ieee80211_node *, int); 203 static void rum_amrr_start(struct rum_softc *, 204 struct ieee80211_node *); 205 static void rum_amrr_timeout(void *); 206 static void rum_amrr_update(struct usbd_xfer *, void *, 207 usbd_status); 208 209 /* 210 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 211 */ 212 static const struct ieee80211_rateset rum_rateset_11a = 213 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 214 215 static const struct ieee80211_rateset rum_rateset_11b = 216 { 4, { 2, 4, 11, 22 } }; 217 218 static const struct ieee80211_rateset rum_rateset_11g = 219 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 220 221 static const struct { 222 uint32_t reg; 223 uint32_t val; 224 } rum_def_mac[] = { 225 RT2573_DEF_MAC 226 }; 227 228 static const struct { 229 uint8_t reg; 230 uint8_t val; 231 } rum_def_bbp[] = { 232 RT2573_DEF_BBP 233 }; 234 235 static const struct rfprog { 236 uint8_t chan; 237 uint32_t r1, r2, r3, r4; 238 } rum_rf5226[] = { 239 RT2573_RF5226 240 }, rum_rf5225[] = { 241 RT2573_RF5225 242 }; 243 244 static int rum_match(device_t, cfdata_t, void *); 245 static void rum_attach(device_t, device_t, void *); 246 static int rum_detach(device_t, int); 247 static int rum_activate(device_t, enum devact); 248 extern struct cfdriver rum_cd; 249 CFATTACH_DECL_NEW(rum, sizeof(struct rum_softc), rum_match, rum_attach, 250 rum_detach, rum_activate); 251 252 static int 253 rum_match(device_t parent, cfdata_t match, void *aux) 254 { 255 struct usb_attach_arg *uaa = aux; 256 257 return (usb_lookup(rum_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? 258 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 259 } 260 261 static int 262 rum_attachhook(void *xsc) 263 { 264 struct rum_softc *sc = xsc; 265 firmware_handle_t fwh; 266 const char *name = "rum-rt2573"; 267 u_char *ucode; 268 size_t size; 269 int error; 270 271 if ((error = firmware_open("rum", name, &fwh)) != 0) { 272 printf("%s: failed firmware_open of file %s (error %d)\n", 273 device_xname(sc->sc_dev), name, error); 274 return error; 275 } 276 size = firmware_get_size(fwh); 277 ucode = firmware_malloc(size); 278 if (ucode == NULL) { 279 printf("%s: failed to allocate firmware memory\n", 280 device_xname(sc->sc_dev)); 281 firmware_close(fwh); 282 return ENOMEM; 283 } 284 error = firmware_read(fwh, 0, ucode, size); 285 firmware_close(fwh); 286 if (error != 0) { 287 printf("%s: failed to read firmware (error %d)\n", 288 device_xname(sc->sc_dev), error); 289 firmware_free(ucode, size); 290 return error; 291 } 292 293 if (rum_load_microcode(sc, ucode, size) != 0) { 294 printf("%s: could not load 8051 microcode\n", 295 device_xname(sc->sc_dev)); 296 firmware_free(ucode, size); 297 return ENXIO; 298 } 299 300 firmware_free(ucode, size); 301 sc->sc_flags |= RT2573_FWLOADED; 302 303 return 0; 304 } 305 306 static void 307 rum_attach(device_t parent, device_t self, void *aux) 308 { 309 struct rum_softc *sc = device_private(self); 310 struct usb_attach_arg *uaa = aux; 311 struct ieee80211com *ic = &sc->sc_ic; 312 struct ifnet *ifp = &sc->sc_if; 313 usb_interface_descriptor_t *id; 314 usb_endpoint_descriptor_t *ed; 315 usbd_status error; 316 char *devinfop; 317 int i, ntries; 318 uint32_t tmp; 319 320 sc->sc_dev = self; 321 sc->sc_udev = uaa->uaa_device; 322 sc->sc_flags = 0; 323 324 aprint_naive("\n"); 325 aprint_normal("\n"); 326 327 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 328 aprint_normal_dev(self, "%s\n", devinfop); 329 usbd_devinfo_free(devinfop); 330 331 error = usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0); 332 if (error != 0) { 333 aprint_error_dev(self, "failed to set configuration" 334 ", err=%s\n", usbd_errstr(error)); 335 return; 336 } 337 338 /* get the first interface handle */ 339 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 340 &sc->sc_iface); 341 if (error != 0) { 342 aprint_error_dev(self, "could not get interface handle\n"); 343 return; 344 } 345 346 /* 347 * Find endpoints. 348 */ 349 id = usbd_get_interface_descriptor(sc->sc_iface); 350 351 sc->sc_rx_no = sc->sc_tx_no = -1; 352 for (i = 0; i < id->bNumEndpoints; i++) { 353 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 354 if (ed == NULL) { 355 aprint_error_dev(self, 356 "no endpoint descriptor for iface %d\n", i); 357 return; 358 } 359 360 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 361 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 362 sc->sc_rx_no = ed->bEndpointAddress; 363 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 364 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 365 sc->sc_tx_no = ed->bEndpointAddress; 366 } 367 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 368 aprint_error_dev(self, "missing endpoint\n"); 369 return; 370 } 371 372 usb_init_task(&sc->sc_task, rum_task, sc, 0); 373 callout_init(&sc->sc_scan_ch, 0); 374 375 sc->amrr.amrr_min_success_threshold = 1; 376 sc->amrr.amrr_max_success_threshold = 10; 377 callout_init(&sc->sc_amrr_ch, 0); 378 379 /* retrieve RT2573 rev. no */ 380 for (ntries = 0; ntries < 1000; ntries++) { 381 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 382 break; 383 DELAY(1000); 384 } 385 if (ntries == 1000) { 386 aprint_error_dev(self, "timeout waiting for chip to settle\n"); 387 return; 388 } 389 390 /* retrieve MAC address and various other things from EEPROM */ 391 rum_read_eeprom(sc); 392 393 aprint_normal_dev(self, 394 "MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 395 sc->macbbp_rev, tmp, 396 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 397 398 ic->ic_ifp = ifp; 399 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 400 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 401 ic->ic_state = IEEE80211_S_INIT; 402 403 /* set device capabilities */ 404 ic->ic_caps = 405 IEEE80211_C_IBSS | /* IBSS mode supported */ 406 IEEE80211_C_MONITOR | /* monitor mode supported */ 407 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 408 IEEE80211_C_TXPMGT | /* tx power management */ 409 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 410 IEEE80211_C_SHSLOT | /* short slot time supported */ 411 IEEE80211_C_WPA; /* 802.11i */ 412 413 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 414 /* set supported .11a rates */ 415 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 416 417 /* set supported .11a channels */ 418 for (i = 34; i <= 46; i += 4) { 419 ic->ic_channels[i].ic_freq = 420 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 421 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 422 } 423 for (i = 36; i <= 64; 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 = 100; i <= 140; 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 = 149; i <= 165; 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 } 439 440 /* set supported .11b and .11g rates */ 441 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 442 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 443 444 /* set supported .11b and .11g channels (1 through 14) */ 445 for (i = 1; i <= 14; i++) { 446 ic->ic_channels[i].ic_freq = 447 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 448 ic->ic_channels[i].ic_flags = 449 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 450 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 451 } 452 453 ifp->if_softc = sc; 454 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 455 ifp->if_init = rum_init; 456 ifp->if_ioctl = rum_ioctl; 457 ifp->if_start = rum_start; 458 ifp->if_watchdog = rum_watchdog; 459 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 460 IFQ_SET_READY(&ifp->if_snd); 461 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 462 463 if_attach(ifp); 464 ieee80211_ifattach(ic); 465 ic->ic_newassoc = rum_newassoc; 466 467 /* override state transition machine */ 468 sc->sc_newstate = ic->ic_newstate; 469 ic->ic_newstate = rum_newstate; 470 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 471 472 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 473 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 474 &sc->sc_drvbpf); 475 476 sc->sc_rxtap_len = sizeof(sc->sc_rxtapu); 477 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 478 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 479 480 sc->sc_txtap_len = sizeof(sc->sc_txtapu); 481 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 482 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 483 484 ieee80211_announce(ic); 485 486 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 487 488 if (!pmf_device_register(self, NULL, NULL)) 489 aprint_error_dev(self, "couldn't establish power handler\n"); 490 491 return; 492 } 493 494 static int 495 rum_detach(device_t self, int flags) 496 { 497 struct rum_softc *sc = device_private(self); 498 struct ieee80211com *ic = &sc->sc_ic; 499 struct ifnet *ifp = &sc->sc_if; 500 int s; 501 502 if (!ifp->if_softc) 503 return 0; 504 505 pmf_device_deregister(self); 506 507 s = splusb(); 508 509 rum_stop(ifp, 1); 510 usb_rem_task(sc->sc_udev, &sc->sc_task); 511 callout_stop(&sc->sc_scan_ch); 512 callout_stop(&sc->sc_amrr_ch); 513 514 bpf_detach(ifp); 515 ieee80211_ifdetach(ic); /* free all nodes */ 516 if_detach(ifp); 517 518 splx(s); 519 520 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 521 522 return 0; 523 } 524 525 static int 526 rum_alloc_tx_list(struct rum_softc *sc) 527 { 528 struct rum_tx_data *data; 529 int i, error; 530 531 sc->tx_cur = sc->tx_queued = 0; 532 533 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 534 data = &sc->tx_data[i]; 535 536 data->sc = sc; 537 538 error = usbd_create_xfer(sc->sc_tx_pipeh, 539 RT2573_TX_DESC_SIZE + IEEE80211_MAX_LEN, 540 USBD_FORCE_SHORT_XFER, 0, &data->xfer); 541 if (error) { 542 printf("%s: could not allocate tx xfer\n", 543 device_xname(sc->sc_dev)); 544 goto fail; 545 } 546 data->buf = usbd_get_buffer(data->xfer); 547 548 /* clean Tx descriptor */ 549 memset(data->buf, 0, RT2573_TX_DESC_SIZE); 550 } 551 552 return 0; 553 554 fail: rum_free_tx_list(sc); 555 return error; 556 } 557 558 static void 559 rum_free_tx_list(struct rum_softc *sc) 560 { 561 struct rum_tx_data *data; 562 int i; 563 564 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 565 data = &sc->tx_data[i]; 566 567 if (data->xfer != NULL) { 568 usbd_destroy_xfer(data->xfer); 569 data->xfer = NULL; 570 } 571 572 if (data->ni != NULL) { 573 ieee80211_free_node(data->ni); 574 data->ni = NULL; 575 } 576 } 577 } 578 579 static int 580 rum_alloc_rx_list(struct rum_softc *sc) 581 { 582 struct rum_rx_data *data; 583 int i, error; 584 585 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 586 data = &sc->rx_data[i]; 587 588 data->sc = sc; 589 590 error = usbd_create_xfer(sc->sc_rx_pipeh, MCLBYTES, 591 USBD_SHORT_XFER_OK, 0, &data->xfer); 592 if (error) { 593 printf("%s: could not allocate rx xfer\n", 594 device_xname(sc->sc_dev)); 595 goto fail; 596 } 597 598 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 599 if (data->m == NULL) { 600 printf("%s: could not allocate rx mbuf\n", 601 device_xname(sc->sc_dev)); 602 error = ENOMEM; 603 goto fail; 604 } 605 606 MCLGET(data->m, M_DONTWAIT); 607 if (!(data->m->m_flags & M_EXT)) { 608 printf("%s: could not allocate rx mbuf cluster\n", 609 device_xname(sc->sc_dev)); 610 error = ENOMEM; 611 goto fail; 612 } 613 614 data->buf = mtod(data->m, uint8_t *); 615 } 616 617 return 0; 618 619 fail: rum_free_rx_list(sc); 620 return error; 621 } 622 623 static void 624 rum_free_rx_list(struct rum_softc *sc) 625 { 626 struct rum_rx_data *data; 627 int i; 628 629 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 630 data = &sc->rx_data[i]; 631 632 if (data->xfer != NULL) { 633 usbd_destroy_xfer(data->xfer); 634 data->xfer = NULL; 635 } 636 637 if (data->m != NULL) { 638 m_freem(data->m); 639 data->m = NULL; 640 } 641 } 642 } 643 644 static int 645 rum_media_change(struct ifnet *ifp) 646 { 647 int error; 648 649 error = ieee80211_media_change(ifp); 650 if (error != ENETRESET) 651 return error; 652 653 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 654 rum_init(ifp); 655 656 return 0; 657 } 658 659 /* 660 * This function is called periodically (every 200ms) during scanning to 661 * switch from one channel to another. 662 */ 663 static void 664 rum_next_scan(void *arg) 665 { 666 struct rum_softc *sc = arg; 667 struct ieee80211com *ic = &sc->sc_ic; 668 int s; 669 670 s = splnet(); 671 if (ic->ic_state == IEEE80211_S_SCAN) 672 ieee80211_next_scan(ic); 673 splx(s); 674 } 675 676 static void 677 rum_task(void *arg) 678 { 679 struct rum_softc *sc = arg; 680 struct ieee80211com *ic = &sc->sc_ic; 681 enum ieee80211_state ostate; 682 struct ieee80211_node *ni; 683 uint32_t tmp; 684 685 ostate = ic->ic_state; 686 687 switch (sc->sc_state) { 688 case IEEE80211_S_INIT: 689 if (ostate == IEEE80211_S_RUN) { 690 /* abort TSF synchronization */ 691 tmp = rum_read(sc, RT2573_TXRX_CSR9); 692 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 693 } 694 break; 695 696 case IEEE80211_S_SCAN: 697 rum_set_chan(sc, ic->ic_curchan); 698 callout_reset(&sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 699 break; 700 701 case IEEE80211_S_AUTH: 702 rum_set_chan(sc, ic->ic_curchan); 703 break; 704 705 case IEEE80211_S_ASSOC: 706 rum_set_chan(sc, ic->ic_curchan); 707 break; 708 709 case IEEE80211_S_RUN: 710 rum_set_chan(sc, ic->ic_curchan); 711 712 ni = ic->ic_bss; 713 714 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 715 rum_update_slot(sc); 716 rum_enable_mrr(sc); 717 rum_set_txpreamble(sc); 718 rum_set_basicrates(sc); 719 rum_set_bssid(sc, ni->ni_bssid); 720 } 721 722 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 723 ic->ic_opmode == IEEE80211_M_IBSS) 724 rum_prepare_beacon(sc); 725 726 if (ic->ic_opmode != IEEE80211_M_MONITOR) 727 rum_enable_tsf_sync(sc); 728 729 if (ic->ic_opmode == IEEE80211_M_STA) { 730 /* fake a join to init the tx rate */ 731 rum_newassoc(ic->ic_bss, 1); 732 733 /* enable automatic rate adaptation in STA mode */ 734 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 735 rum_amrr_start(sc, ni); 736 } 737 738 break; 739 } 740 741 sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); 742 } 743 744 static int 745 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 746 { 747 struct rum_softc *sc = ic->ic_ifp->if_softc; 748 749 usb_rem_task(sc->sc_udev, &sc->sc_task); 750 callout_stop(&sc->sc_scan_ch); 751 callout_stop(&sc->sc_amrr_ch); 752 753 /* do it in a process context */ 754 sc->sc_state = nstate; 755 sc->sc_arg = arg; 756 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 757 758 return 0; 759 } 760 761 /* quickly determine if a given rate is CCK or OFDM */ 762 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 763 764 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 765 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 766 767 static void 768 rum_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 769 { 770 struct rum_tx_data *data = priv; 771 struct rum_softc *sc = data->sc; 772 struct ifnet *ifp = &sc->sc_if; 773 int s; 774 775 if (status != USBD_NORMAL_COMPLETION) { 776 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 777 return; 778 779 printf("%s: could not transmit buffer: %s\n", 780 device_xname(sc->sc_dev), usbd_errstr(status)); 781 782 if (status == USBD_STALLED) 783 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 784 785 ifp->if_oerrors++; 786 return; 787 } 788 789 s = splnet(); 790 791 ieee80211_free_node(data->ni); 792 data->ni = NULL; 793 794 sc->tx_queued--; 795 ifp->if_opackets++; 796 797 DPRINTFN(10, ("tx done\n")); 798 799 sc->sc_tx_timer = 0; 800 ifp->if_flags &= ~IFF_OACTIVE; 801 rum_start(ifp); 802 803 splx(s); 804 } 805 806 static void 807 rum_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 808 { 809 struct rum_rx_data *data = priv; 810 struct rum_softc *sc = data->sc; 811 struct ieee80211com *ic = &sc->sc_ic; 812 struct ifnet *ifp = &sc->sc_if; 813 struct rum_rx_desc *desc; 814 struct ieee80211_frame *wh; 815 struct ieee80211_node *ni; 816 struct mbuf *mnew, *m; 817 int s, len; 818 819 if (status != USBD_NORMAL_COMPLETION) { 820 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 821 return; 822 823 if (status == USBD_STALLED) 824 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 825 goto skip; 826 } 827 828 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 829 830 if (len < (int)(RT2573_RX_DESC_SIZE + 831 sizeof(struct ieee80211_frame_min))) { 832 DPRINTF(("%s: xfer too short %d\n", device_xname(sc->sc_dev), 833 len)); 834 ifp->if_ierrors++; 835 goto skip; 836 } 837 838 desc = (struct rum_rx_desc *)data->buf; 839 840 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 841 /* 842 * This should not happen since we did not request to receive 843 * those frames when we filled RT2573_TXRX_CSR0. 844 */ 845 DPRINTFN(5, ("CRC error\n")); 846 ifp->if_ierrors++; 847 goto skip; 848 } 849 850 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 851 if (mnew == NULL) { 852 printf("%s: could not allocate rx mbuf\n", 853 device_xname(sc->sc_dev)); 854 ifp->if_ierrors++; 855 goto skip; 856 } 857 858 MCLGET(mnew, M_DONTWAIT); 859 if (!(mnew->m_flags & M_EXT)) { 860 printf("%s: could not allocate rx mbuf cluster\n", 861 device_xname(sc->sc_dev)); 862 m_freem(mnew); 863 ifp->if_ierrors++; 864 goto skip; 865 } 866 867 m = data->m; 868 data->m = mnew; 869 data->buf = mtod(data->m, uint8_t *); 870 871 /* finalize mbuf */ 872 m_set_rcvif(m, ifp); 873 m->m_data = (void *)(desc + 1); 874 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 875 876 s = splnet(); 877 878 if (sc->sc_drvbpf != NULL) { 879 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 880 881 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 882 tap->wr_rate = rum_rxrate(desc); 883 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 884 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 885 tap->wr_antenna = sc->rx_ant; 886 tap->wr_antsignal = desc->rssi; 887 888 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 889 } 890 891 wh = mtod(m, struct ieee80211_frame *); 892 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 893 894 /* send the frame to the 802.11 layer */ 895 ieee80211_input(ic, m, ni, desc->rssi, 0); 896 897 /* node is no longer needed */ 898 ieee80211_free_node(ni); 899 900 splx(s); 901 902 DPRINTFN(15, ("rx done\n")); 903 904 skip: /* setup a new transfer */ 905 usbd_setup_xfer(xfer, data, data->buf, MCLBYTES, USBD_SHORT_XFER_OK, 906 USBD_NO_TIMEOUT, rum_rxeof); 907 usbd_transfer(xfer); 908 } 909 910 /* 911 * This function is only used by the Rx radiotap code. It returns the rate at 912 * which a given frame was received. 913 */ 914 static uint8_t 915 rum_rxrate(const struct rum_rx_desc *desc) 916 { 917 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 918 /* reverse function of rum_plcp_signal */ 919 switch (desc->rate) { 920 case 0xb: return 12; 921 case 0xf: return 18; 922 case 0xa: return 24; 923 case 0xe: return 36; 924 case 0x9: return 48; 925 case 0xd: return 72; 926 case 0x8: return 96; 927 case 0xc: return 108; 928 } 929 } else { 930 if (desc->rate == 10) 931 return 2; 932 if (desc->rate == 20) 933 return 4; 934 if (desc->rate == 55) 935 return 11; 936 if (desc->rate == 110) 937 return 22; 938 } 939 return 2; /* should not get there */ 940 } 941 942 /* 943 * Return the expected ack rate for a frame transmitted at rate `rate'. 944 * XXX: this should depend on the destination node basic rate set. 945 */ 946 static int 947 rum_ack_rate(struct ieee80211com *ic, int rate) 948 { 949 switch (rate) { 950 /* CCK rates */ 951 case 2: 952 return 2; 953 case 4: 954 case 11: 955 case 22: 956 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 957 958 /* OFDM rates */ 959 case 12: 960 case 18: 961 return 12; 962 case 24: 963 case 36: 964 return 24; 965 case 48: 966 case 72: 967 case 96: 968 case 108: 969 return 48; 970 } 971 972 /* default to 1Mbps */ 973 return 2; 974 } 975 976 /* 977 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 978 * The function automatically determines the operating mode depending on the 979 * given rate. `flags' indicates whether short preamble is in use or not. 980 */ 981 static uint16_t 982 rum_txtime(int len, int rate, uint32_t flags) 983 { 984 uint16_t txtime; 985 986 if (RUM_RATE_IS_OFDM(rate)) { 987 /* IEEE Std 802.11a-1999, pp. 37 */ 988 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 989 txtime = 16 + 4 + 4 * txtime + 6; 990 } else { 991 /* IEEE Std 802.11b-1999, pp. 28 */ 992 txtime = (16 * len + rate - 1) / rate; 993 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 994 txtime += 72 + 24; 995 else 996 txtime += 144 + 48; 997 } 998 return txtime; 999 } 1000 1001 static uint8_t 1002 rum_plcp_signal(int rate) 1003 { 1004 switch (rate) { 1005 /* CCK rates (returned values are device-dependent) */ 1006 case 2: return 0x0; 1007 case 4: return 0x1; 1008 case 11: return 0x2; 1009 case 22: return 0x3; 1010 1011 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1012 case 12: return 0xb; 1013 case 18: return 0xf; 1014 case 24: return 0xa; 1015 case 36: return 0xe; 1016 case 48: return 0x9; 1017 case 72: return 0xd; 1018 case 96: return 0x8; 1019 case 108: return 0xc; 1020 1021 /* unsupported rates (should not get there) */ 1022 default: return 0xff; 1023 } 1024 } 1025 1026 static void 1027 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1028 uint32_t flags, uint16_t xflags, int len, int rate) 1029 { 1030 struct ieee80211com *ic = &sc->sc_ic; 1031 uint16_t plcp_length; 1032 int remainder; 1033 1034 desc->flags = htole32(flags); 1035 desc->flags |= htole32(RT2573_TX_VALID); 1036 desc->flags |= htole32(len << 16); 1037 1038 desc->xflags = htole16(xflags); 1039 1040 desc->wme = htole16( 1041 RT2573_QID(0) | 1042 RT2573_AIFSN(2) | 1043 RT2573_LOGCWMIN(4) | 1044 RT2573_LOGCWMAX(10)); 1045 1046 /* setup PLCP fields */ 1047 desc->plcp_signal = rum_plcp_signal(rate); 1048 desc->plcp_service = 4; 1049 1050 len += IEEE80211_CRC_LEN; 1051 if (RUM_RATE_IS_OFDM(rate)) { 1052 desc->flags |= htole32(RT2573_TX_OFDM); 1053 1054 plcp_length = len & 0xfff; 1055 desc->plcp_length_hi = plcp_length >> 6; 1056 desc->plcp_length_lo = plcp_length & 0x3f; 1057 } else { 1058 plcp_length = (16 * len + rate - 1) / rate; 1059 if (rate == 22) { 1060 remainder = (16 * len) % 22; 1061 if (remainder != 0 && remainder < 7) 1062 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1063 } 1064 desc->plcp_length_hi = plcp_length >> 8; 1065 desc->plcp_length_lo = plcp_length & 0xff; 1066 1067 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1068 desc->plcp_signal |= 0x08; 1069 } 1070 } 1071 1072 #define RUM_TX_TIMEOUT 5000 1073 1074 static int 1075 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1076 { 1077 struct ieee80211com *ic = &sc->sc_ic; 1078 struct rum_tx_desc *desc; 1079 struct rum_tx_data *data; 1080 struct ieee80211_frame *wh; 1081 struct ieee80211_key *k; 1082 uint32_t flags = 0; 1083 uint16_t dur; 1084 usbd_status error; 1085 int rate, xferlen, pktlen, needrts = 0, needcts = 0; 1086 1087 wh = mtod(m0, struct ieee80211_frame *); 1088 1089 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1090 k = ieee80211_crypto_encap(ic, ni, m0); 1091 if (k == NULL) { 1092 m_freem(m0); 1093 return ENOBUFS; 1094 } 1095 1096 /* packet header may have moved, reset our local pointer */ 1097 wh = mtod(m0, struct ieee80211_frame *); 1098 } 1099 1100 /* compute actual packet length (including CRC and crypto overhead) */ 1101 pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN; 1102 1103 /* pickup a rate */ 1104 if (IEEE80211_IS_MULTICAST(wh->i_addr1) || 1105 ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1106 IEEE80211_FC0_TYPE_MGT)) { 1107 /* mgmt/multicast frames are sent at the lowest avail. rate */ 1108 rate = ni->ni_rates.rs_rates[0]; 1109 } else if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 1110 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1111 } else 1112 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1113 if (rate == 0) 1114 rate = 2; /* XXX should not happen */ 1115 rate &= IEEE80211_RATE_VAL; 1116 1117 /* check if RTS/CTS or CTS-to-self protection must be used */ 1118 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1119 /* multicast frames are not sent at OFDM rates in 802.11b/g */ 1120 if (pktlen > ic->ic_rtsthreshold) { 1121 needrts = 1; /* RTS/CTS based on frame length */ 1122 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1123 RUM_RATE_IS_OFDM(rate)) { 1124 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 1125 needcts = 1; /* CTS-to-self */ 1126 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 1127 needrts = 1; /* RTS/CTS */ 1128 } 1129 } 1130 if (needrts || needcts) { 1131 struct mbuf *mprot; 1132 int protrate, ackrate; 1133 1134 protrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1135 ackrate = rum_ack_rate(ic, rate); 1136 1137 dur = rum_txtime(pktlen, rate, ic->ic_flags) + 1138 rum_txtime(RUM_ACK_SIZE, ackrate, ic->ic_flags) + 1139 2 * sc->sifs; 1140 if (needrts) { 1141 dur += rum_txtime(RUM_CTS_SIZE, rum_ack_rate(ic, 1142 protrate), ic->ic_flags) + sc->sifs; 1143 mprot = ieee80211_get_rts(ic, wh, dur); 1144 } else { 1145 mprot = ieee80211_get_cts_to_self(ic, dur); 1146 } 1147 if (mprot == NULL) { 1148 aprint_error_dev(sc->sc_dev, 1149 "couldn't allocate protection frame\n"); 1150 m_freem(m0); 1151 return ENOBUFS; 1152 } 1153 1154 data = &sc->tx_data[sc->tx_cur]; 1155 desc = (struct rum_tx_desc *)data->buf; 1156 1157 /* avoid multiple free() of the same node for each fragment */ 1158 data->ni = ieee80211_ref_node(ni); 1159 1160 m_copydata(mprot, 0, mprot->m_pkthdr.len, 1161 data->buf + RT2573_TX_DESC_SIZE); 1162 rum_setup_tx_desc(sc, desc, 1163 (needrts ? RT2573_TX_NEED_ACK : 0) | RT2573_TX_MORE_FRAG, 1164 0, mprot->m_pkthdr.len, protrate); 1165 1166 /* no roundup necessary here */ 1167 xferlen = RT2573_TX_DESC_SIZE + mprot->m_pkthdr.len; 1168 1169 /* XXX may want to pass the protection frame to BPF */ 1170 1171 /* mbuf is no longer needed */ 1172 m_freem(mprot); 1173 1174 usbd_setup_xfer(data->xfer, data, data->buf, 1175 xferlen, USBD_FORCE_SHORT_XFER, 1176 RUM_TX_TIMEOUT, rum_txeof); 1177 error = usbd_transfer(data->xfer); 1178 if (error != USBD_NORMAL_COMPLETION && 1179 error != USBD_IN_PROGRESS) { 1180 m_freem(m0); 1181 return error; 1182 } 1183 1184 sc->tx_queued++; 1185 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1186 1187 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1188 } 1189 1190 data = &sc->tx_data[sc->tx_cur]; 1191 desc = (struct rum_tx_desc *)data->buf; 1192 1193 data->ni = ni; 1194 1195 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1196 flags |= RT2573_TX_NEED_ACK; 1197 1198 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1199 ic->ic_flags) + sc->sifs; 1200 *(uint16_t *)wh->i_dur = htole16(dur); 1201 1202 /* tell hardware to set timestamp in probe responses */ 1203 if ((wh->i_fc[0] & 1204 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1205 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1206 flags |= RT2573_TX_TIMESTAMP; 1207 } 1208 1209 if (sc->sc_drvbpf != NULL) { 1210 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1211 1212 tap->wt_flags = 0; 1213 tap->wt_rate = rate; 1214 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1215 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1216 tap->wt_antenna = sc->tx_ant; 1217 1218 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1219 } 1220 1221 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1222 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1223 1224 /* align end on a 4-bytes boundary */ 1225 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1226 1227 /* 1228 * No space left in the last URB to store the extra 4 bytes, force 1229 * sending of another URB. 1230 */ 1231 if ((xferlen % 64) == 0) 1232 xferlen += 4; 1233 1234 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1235 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1236 rate, xferlen)); 1237 1238 /* mbuf is no longer needed */ 1239 m_freem(m0); 1240 1241 usbd_setup_xfer(data->xfer, data, data->buf, xferlen, 1242 USBD_FORCE_SHORT_XFER, RUM_TX_TIMEOUT, rum_txeof); 1243 error = usbd_transfer(data->xfer); 1244 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1245 return error; 1246 1247 sc->tx_queued++; 1248 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1249 1250 return 0; 1251 } 1252 1253 static void 1254 rum_start(struct ifnet *ifp) 1255 { 1256 struct rum_softc *sc = ifp->if_softc; 1257 struct ieee80211com *ic = &sc->sc_ic; 1258 struct ether_header *eh; 1259 struct ieee80211_node *ni; 1260 struct mbuf *m0; 1261 1262 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1263 return; 1264 1265 for (;;) { 1266 IF_POLL(&ic->ic_mgtq, m0); 1267 if (m0 != NULL) { 1268 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1269 ifp->if_flags |= IFF_OACTIVE; 1270 break; 1271 } 1272 IF_DEQUEUE(&ic->ic_mgtq, m0); 1273 1274 ni = M_GETCTX(m0, struct ieee80211_node *); 1275 M_CLEARCTX(m0); 1276 bpf_mtap3(ic->ic_rawbpf, m0); 1277 if (rum_tx_data(sc, m0, ni) != 0) 1278 break; 1279 1280 } else { 1281 if (ic->ic_state != IEEE80211_S_RUN) 1282 break; 1283 IFQ_POLL(&ifp->if_snd, m0); 1284 if (m0 == NULL) 1285 break; 1286 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1287 ifp->if_flags |= IFF_OACTIVE; 1288 break; 1289 } 1290 IFQ_DEQUEUE(&ifp->if_snd, m0); 1291 if (m0->m_len < (int)sizeof(struct ether_header) && 1292 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1293 continue; 1294 1295 eh = mtod(m0, struct ether_header *); 1296 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1297 if (ni == NULL) { 1298 m_freem(m0); 1299 continue; 1300 } 1301 bpf_mtap(ifp, m0); 1302 m0 = ieee80211_encap(ic, m0, ni); 1303 if (m0 == NULL) { 1304 ieee80211_free_node(ni); 1305 continue; 1306 } 1307 bpf_mtap3(ic->ic_rawbpf, m0); 1308 if (rum_tx_data(sc, m0, ni) != 0) { 1309 ieee80211_free_node(ni); 1310 ifp->if_oerrors++; 1311 break; 1312 } 1313 } 1314 1315 sc->sc_tx_timer = 5; 1316 ifp->if_timer = 1; 1317 } 1318 } 1319 1320 static void 1321 rum_watchdog(struct ifnet *ifp) 1322 { 1323 struct rum_softc *sc = ifp->if_softc; 1324 struct ieee80211com *ic = &sc->sc_ic; 1325 1326 ifp->if_timer = 0; 1327 1328 if (sc->sc_tx_timer > 0) { 1329 if (--sc->sc_tx_timer == 0) { 1330 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1331 /*rum_init(ifp); XXX needs a process context! */ 1332 ifp->if_oerrors++; 1333 return; 1334 } 1335 ifp->if_timer = 1; 1336 } 1337 1338 ieee80211_watchdog(ic); 1339 } 1340 1341 static int 1342 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1343 { 1344 #define IS_RUNNING(ifp) \ 1345 (((ifp)->if_flags & IFF_UP) && ((ifp)->if_flags & IFF_RUNNING)) 1346 1347 struct rum_softc *sc = ifp->if_softc; 1348 struct ieee80211com *ic = &sc->sc_ic; 1349 int s, error = 0; 1350 1351 s = splnet(); 1352 1353 switch (cmd) { 1354 case SIOCSIFFLAGS: 1355 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1356 break; 1357 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1358 case IFF_UP|IFF_RUNNING: 1359 rum_update_promisc(sc); 1360 break; 1361 case IFF_UP: 1362 rum_init(ifp); 1363 break; 1364 case IFF_RUNNING: 1365 rum_stop(ifp, 1); 1366 break; 1367 case 0: 1368 break; 1369 } 1370 break; 1371 1372 case SIOCADDMULTI: 1373 case SIOCDELMULTI: 1374 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1375 error = 0; 1376 } 1377 break; 1378 1379 default: 1380 error = ieee80211_ioctl(ic, cmd, data); 1381 } 1382 1383 if (error == ENETRESET) { 1384 if (IS_RUNNING(ifp) && 1385 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1386 rum_init(ifp); 1387 error = 0; 1388 } 1389 1390 splx(s); 1391 1392 return error; 1393 #undef IS_RUNNING 1394 } 1395 1396 static void 1397 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1398 { 1399 usb_device_request_t req; 1400 usbd_status error; 1401 1402 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1403 req.bRequest = RT2573_READ_EEPROM; 1404 USETW(req.wValue, 0); 1405 USETW(req.wIndex, addr); 1406 USETW(req.wLength, len); 1407 1408 error = usbd_do_request(sc->sc_udev, &req, buf); 1409 if (error != 0) { 1410 printf("%s: could not read EEPROM: %s\n", 1411 device_xname(sc->sc_dev), usbd_errstr(error)); 1412 } 1413 } 1414 1415 static uint32_t 1416 rum_read(struct rum_softc *sc, uint16_t reg) 1417 { 1418 uint32_t val; 1419 1420 rum_read_multi(sc, reg, &val, sizeof(val)); 1421 1422 return le32toh(val); 1423 } 1424 1425 static void 1426 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1427 { 1428 usb_device_request_t req; 1429 usbd_status error; 1430 1431 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1432 req.bRequest = RT2573_READ_MULTI_MAC; 1433 USETW(req.wValue, 0); 1434 USETW(req.wIndex, reg); 1435 USETW(req.wLength, len); 1436 1437 error = usbd_do_request(sc->sc_udev, &req, buf); 1438 if (error != 0) { 1439 printf("%s: could not multi read MAC register: %s\n", 1440 device_xname(sc->sc_dev), usbd_errstr(error)); 1441 } 1442 } 1443 1444 static void 1445 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1446 { 1447 uint32_t tmp = htole32(val); 1448 1449 rum_write_multi(sc, reg, &tmp, sizeof(tmp)); 1450 } 1451 1452 static void 1453 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1454 { 1455 usb_device_request_t req; 1456 usbd_status error; 1457 int offset; 1458 1459 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1460 req.bRequest = RT2573_WRITE_MULTI_MAC; 1461 USETW(req.wValue, 0); 1462 1463 /* write at most 64 bytes at a time */ 1464 for (offset = 0; offset < len; offset += 64) { 1465 USETW(req.wIndex, reg + offset); 1466 USETW(req.wLength, MIN(len - offset, 64)); 1467 1468 error = usbd_do_request(sc->sc_udev, &req, (char *)buf + offset); 1469 if (error != 0) { 1470 printf("%s: could not multi write MAC register: %s\n", 1471 device_xname(sc->sc_dev), usbd_errstr(error)); 1472 } 1473 } 1474 } 1475 1476 static void 1477 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1478 { 1479 uint32_t tmp; 1480 int ntries; 1481 1482 for (ntries = 0; ntries < 5; ntries++) { 1483 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1484 break; 1485 } 1486 if (ntries == 5) { 1487 printf("%s: could not write to BBP\n", device_xname(sc->sc_dev)); 1488 return; 1489 } 1490 1491 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1492 rum_write(sc, RT2573_PHY_CSR3, tmp); 1493 } 1494 1495 static uint8_t 1496 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1497 { 1498 uint32_t val; 1499 int ntries; 1500 1501 for (ntries = 0; ntries < 5; ntries++) { 1502 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1503 break; 1504 } 1505 if (ntries == 5) { 1506 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1507 return 0; 1508 } 1509 1510 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1511 rum_write(sc, RT2573_PHY_CSR3, val); 1512 1513 for (ntries = 0; ntries < 100; ntries++) { 1514 val = rum_read(sc, RT2573_PHY_CSR3); 1515 if (!(val & RT2573_BBP_BUSY)) 1516 return val & 0xff; 1517 DELAY(1); 1518 } 1519 1520 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1521 return 0; 1522 } 1523 1524 static void 1525 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1526 { 1527 uint32_t tmp; 1528 int ntries; 1529 1530 for (ntries = 0; ntries < 5; ntries++) { 1531 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1532 break; 1533 } 1534 if (ntries == 5) { 1535 printf("%s: could not write to RF\n", device_xname(sc->sc_dev)); 1536 return; 1537 } 1538 1539 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1540 (reg & 3); 1541 rum_write(sc, RT2573_PHY_CSR4, tmp); 1542 1543 /* remember last written value in sc */ 1544 sc->rf_regs[reg] = val; 1545 1546 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1547 } 1548 1549 static void 1550 rum_select_antenna(struct rum_softc *sc) 1551 { 1552 uint8_t bbp4, bbp77; 1553 uint32_t tmp; 1554 1555 bbp4 = rum_bbp_read(sc, 4); 1556 bbp77 = rum_bbp_read(sc, 77); 1557 1558 /* TBD */ 1559 1560 /* make sure Rx is disabled before switching antenna */ 1561 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1562 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1563 1564 rum_bbp_write(sc, 4, bbp4); 1565 rum_bbp_write(sc, 77, bbp77); 1566 1567 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1568 } 1569 1570 /* 1571 * Enable multi-rate retries for frames sent at OFDM rates. 1572 * In 802.11b/g mode, allow fallback to CCK rates. 1573 */ 1574 static void 1575 rum_enable_mrr(struct rum_softc *sc) 1576 { 1577 struct ieee80211com *ic = &sc->sc_ic; 1578 uint32_t tmp; 1579 1580 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1581 1582 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1583 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1584 tmp |= RT2573_MRR_CCK_FALLBACK; 1585 tmp |= RT2573_MRR_ENABLED; 1586 1587 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1588 } 1589 1590 static void 1591 rum_set_txpreamble(struct rum_softc *sc) 1592 { 1593 uint32_t tmp; 1594 1595 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1596 1597 tmp &= ~RT2573_SHORT_PREAMBLE; 1598 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1599 tmp |= RT2573_SHORT_PREAMBLE; 1600 1601 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1602 } 1603 1604 static void 1605 rum_set_basicrates(struct rum_softc *sc) 1606 { 1607 struct ieee80211com *ic = &sc->sc_ic; 1608 1609 /* update basic rate set */ 1610 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1611 /* 11b basic rates: 1, 2Mbps */ 1612 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1613 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1614 /* 11a basic rates: 6, 12, 24Mbps */ 1615 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1616 } else { 1617 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1618 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1619 } 1620 } 1621 1622 /* 1623 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1624 * driver. 1625 */ 1626 static void 1627 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1628 { 1629 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1630 uint32_t tmp; 1631 1632 /* update all BBP registers that depend on the band */ 1633 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1634 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1635 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1636 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1637 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1638 } 1639 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1640 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1641 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1642 } 1643 1644 sc->bbp17 = bbp17; 1645 rum_bbp_write(sc, 17, bbp17); 1646 rum_bbp_write(sc, 96, bbp96); 1647 rum_bbp_write(sc, 104, bbp104); 1648 1649 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1650 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1651 rum_bbp_write(sc, 75, 0x80); 1652 rum_bbp_write(sc, 86, 0x80); 1653 rum_bbp_write(sc, 88, 0x80); 1654 } 1655 1656 rum_bbp_write(sc, 35, bbp35); 1657 rum_bbp_write(sc, 97, bbp97); 1658 rum_bbp_write(sc, 98, bbp98); 1659 1660 tmp = rum_read(sc, RT2573_PHY_CSR0); 1661 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1662 if (IEEE80211_IS_CHAN_2GHZ(c)) 1663 tmp |= RT2573_PA_PE_2GHZ; 1664 else 1665 tmp |= RT2573_PA_PE_5GHZ; 1666 rum_write(sc, RT2573_PHY_CSR0, tmp); 1667 1668 /* 802.11a uses a 16 microseconds short interframe space */ 1669 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1670 } 1671 1672 static void 1673 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1674 { 1675 struct ieee80211com *ic = &sc->sc_ic; 1676 const struct rfprog *rfprog; 1677 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1678 int8_t power; 1679 u_int i, chan; 1680 1681 chan = ieee80211_chan2ieee(ic, c); 1682 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1683 return; 1684 1685 /* select the appropriate RF settings based on what EEPROM says */ 1686 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1687 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1688 1689 /* find the settings for this channel (we know it exists) */ 1690 for (i = 0; rfprog[i].chan != chan; i++); 1691 1692 power = sc->txpow[i]; 1693 if (power < 0) { 1694 bbp94 += power; 1695 power = 0; 1696 } else if (power > 31) { 1697 bbp94 += power - 31; 1698 power = 31; 1699 } 1700 1701 /* 1702 * If we are switching from the 2GHz band to the 5GHz band or 1703 * vice-versa, BBP registers need to be reprogrammed. 1704 */ 1705 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1706 rum_select_band(sc, c); 1707 rum_select_antenna(sc); 1708 } 1709 ic->ic_curchan = c; 1710 1711 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1712 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1713 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1714 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1715 1716 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1717 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1718 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1719 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1720 1721 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1722 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1723 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1724 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1725 1726 DELAY(10); 1727 1728 /* enable smart mode for MIMO-capable RFs */ 1729 bbp3 = rum_bbp_read(sc, 3); 1730 1731 bbp3 &= ~RT2573_SMART_MODE; 1732 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1733 bbp3 |= RT2573_SMART_MODE; 1734 1735 rum_bbp_write(sc, 3, bbp3); 1736 1737 if (bbp94 != RT2573_BBPR94_DEFAULT) 1738 rum_bbp_write(sc, 94, bbp94); 1739 } 1740 1741 /* 1742 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1743 * and HostAP operating modes. 1744 */ 1745 static void 1746 rum_enable_tsf_sync(struct rum_softc *sc) 1747 { 1748 struct ieee80211com *ic = &sc->sc_ic; 1749 uint32_t tmp; 1750 1751 if (ic->ic_opmode != IEEE80211_M_STA) { 1752 /* 1753 * Change default 16ms TBTT adjustment to 8ms. 1754 * Must be done before enabling beacon generation. 1755 */ 1756 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1757 } 1758 1759 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1760 1761 /* set beacon interval (in 1/16ms unit) */ 1762 tmp |= ic->ic_bss->ni_intval * 16; 1763 1764 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1765 if (ic->ic_opmode == IEEE80211_M_STA) 1766 tmp |= RT2573_TSF_MODE(1); 1767 else 1768 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1769 1770 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1771 } 1772 1773 static void 1774 rum_update_slot(struct rum_softc *sc) 1775 { 1776 struct ieee80211com *ic = &sc->sc_ic; 1777 uint8_t slottime; 1778 uint32_t tmp; 1779 1780 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1781 1782 tmp = rum_read(sc, RT2573_MAC_CSR9); 1783 tmp = (tmp & ~0xff) | slottime; 1784 rum_write(sc, RT2573_MAC_CSR9, tmp); 1785 1786 DPRINTF(("setting slot time to %uus\n", slottime)); 1787 } 1788 1789 static void 1790 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1791 { 1792 uint32_t tmp; 1793 1794 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1795 rum_write(sc, RT2573_MAC_CSR4, tmp); 1796 1797 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1798 rum_write(sc, RT2573_MAC_CSR5, tmp); 1799 } 1800 1801 static void 1802 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1803 { 1804 uint32_t tmp; 1805 1806 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1807 rum_write(sc, RT2573_MAC_CSR2, tmp); 1808 1809 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1810 rum_write(sc, RT2573_MAC_CSR3, tmp); 1811 } 1812 1813 static void 1814 rum_update_promisc(struct rum_softc *sc) 1815 { 1816 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1817 uint32_t tmp; 1818 1819 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1820 1821 tmp &= ~RT2573_DROP_NOT_TO_ME; 1822 if (!(ifp->if_flags & IFF_PROMISC)) 1823 tmp |= RT2573_DROP_NOT_TO_ME; 1824 1825 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1826 1827 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1828 "entering" : "leaving")); 1829 } 1830 1831 static const char * 1832 rum_get_rf(int rev) 1833 { 1834 switch (rev) { 1835 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1836 case RT2573_RF_2528: return "RT2528"; 1837 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1838 case RT2573_RF_5226: return "RT5226"; 1839 default: return "unknown"; 1840 } 1841 } 1842 1843 static void 1844 rum_read_eeprom(struct rum_softc *sc) 1845 { 1846 struct ieee80211com *ic = &sc->sc_ic; 1847 uint16_t val; 1848 #ifdef RUM_DEBUG 1849 int i; 1850 #endif 1851 1852 /* read MAC/BBP type */ 1853 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1854 sc->macbbp_rev = le16toh(val); 1855 1856 /* read MAC address */ 1857 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1858 1859 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1860 val = le16toh(val); 1861 sc->rf_rev = (val >> 11) & 0x1f; 1862 sc->hw_radio = (val >> 10) & 0x1; 1863 sc->rx_ant = (val >> 4) & 0x3; 1864 sc->tx_ant = (val >> 2) & 0x3; 1865 sc->nb_ant = val & 0x3; 1866 1867 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1868 1869 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1870 val = le16toh(val); 1871 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1872 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1873 1874 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1875 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1876 1877 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1878 val = le16toh(val); 1879 if ((val & 0xff) != 0xff) 1880 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1881 1882 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1883 val = le16toh(val); 1884 if ((val & 0xff) != 0xff) 1885 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1886 1887 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1888 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1889 1890 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1891 val = le16toh(val); 1892 if ((val & 0xff) != 0xff) 1893 sc->rffreq = val & 0xff; 1894 1895 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1896 1897 /* read Tx power for all a/b/g channels */ 1898 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1899 /* XXX default Tx power for 802.11a channels */ 1900 memset(sc->txpow + 14, 24, sizeof(sc->txpow) - 14); 1901 #ifdef RUM_DEBUG 1902 for (i = 0; i < 14; i++) 1903 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1904 #endif 1905 1906 /* read default values for BBP registers */ 1907 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1908 #ifdef RUM_DEBUG 1909 for (i = 0; i < 14; i++) { 1910 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1911 continue; 1912 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1913 sc->bbp_prom[i].val)); 1914 } 1915 #endif 1916 } 1917 1918 static int 1919 rum_bbp_init(struct rum_softc *sc) 1920 { 1921 unsigned int i, ntries; 1922 uint8_t val; 1923 1924 /* wait for BBP to be ready */ 1925 for (ntries = 0; ntries < 100; ntries++) { 1926 val = rum_bbp_read(sc, 0); 1927 if (val != 0 && val != 0xff) 1928 break; 1929 DELAY(1000); 1930 } 1931 if (ntries == 100) { 1932 printf("%s: timeout waiting for BBP\n", 1933 device_xname(sc->sc_dev)); 1934 return EIO; 1935 } 1936 1937 /* initialize BBP registers to default values */ 1938 for (i = 0; i < __arraycount(rum_def_bbp); i++) 1939 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1940 1941 /* write vendor-specific BBP values (from EEPROM) */ 1942 for (i = 0; i < 16; i++) { 1943 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1944 continue; 1945 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1946 } 1947 1948 return 0; 1949 } 1950 1951 static int 1952 rum_init(struct ifnet *ifp) 1953 { 1954 struct rum_softc *sc = ifp->if_softc; 1955 struct ieee80211com *ic = &sc->sc_ic; 1956 uint32_t tmp; 1957 usbd_status error = 0; 1958 unsigned int i, ntries; 1959 1960 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1961 if (rum_attachhook(sc)) 1962 goto fail; 1963 } 1964 1965 rum_stop(ifp, 0); 1966 1967 /* initialize MAC registers to default values */ 1968 for (i = 0; i < __arraycount(rum_def_mac); i++) 1969 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1970 1971 /* set host ready */ 1972 rum_write(sc, RT2573_MAC_CSR1, 3); 1973 rum_write(sc, RT2573_MAC_CSR1, 0); 1974 1975 /* wait for BBP/RF to wakeup */ 1976 for (ntries = 0; ntries < 1000; ntries++) { 1977 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1978 break; 1979 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1980 DELAY(1000); 1981 } 1982 if (ntries == 1000) { 1983 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1984 device_xname(sc->sc_dev)); 1985 goto fail; 1986 } 1987 1988 if ((error = rum_bbp_init(sc)) != 0) 1989 goto fail; 1990 1991 /* select default channel */ 1992 rum_select_band(sc, ic->ic_curchan); 1993 rum_select_antenna(sc); 1994 rum_set_chan(sc, ic->ic_curchan); 1995 1996 /* clear STA registers */ 1997 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); 1998 1999 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2000 rum_set_macaddr(sc, ic->ic_myaddr); 2001 2002 /* initialize ASIC */ 2003 rum_write(sc, RT2573_MAC_CSR1, 4); 2004 2005 /* 2006 * Allocate xfer for AMRR statistics requests. 2007 */ 2008 struct usbd_pipe *pipe0 = usbd_get_pipe0(sc->sc_udev); 2009 error = usbd_create_xfer(pipe0, sizeof(sc->sta), 0, 0, 2010 &sc->amrr_xfer); 2011 if (error) { 2012 printf("%s: could not allocate AMRR xfer\n", 2013 device_xname(sc->sc_dev)); 2014 goto fail; 2015 } 2016 2017 /* 2018 * Open Tx and Rx USB bulk pipes. 2019 */ 2020 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2021 &sc->sc_tx_pipeh); 2022 if (error != 0) { 2023 printf("%s: could not open Tx pipe: %s\n", 2024 device_xname(sc->sc_dev), usbd_errstr(error)); 2025 goto fail; 2026 } 2027 2028 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2029 &sc->sc_rx_pipeh); 2030 if (error != 0) { 2031 printf("%s: could not open Rx pipe: %s\n", 2032 device_xname(sc->sc_dev), usbd_errstr(error)); 2033 goto fail; 2034 } 2035 2036 /* 2037 * Allocate Tx and Rx xfer queues. 2038 */ 2039 error = rum_alloc_tx_list(sc); 2040 if (error != 0) { 2041 printf("%s: could not allocate Tx list\n", 2042 device_xname(sc->sc_dev)); 2043 goto fail; 2044 } 2045 2046 error = rum_alloc_rx_list(sc); 2047 if (error != 0) { 2048 printf("%s: could not allocate Rx list\n", 2049 device_xname(sc->sc_dev)); 2050 goto fail; 2051 } 2052 2053 /* 2054 * Start up the receive pipe. 2055 */ 2056 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2057 struct rum_rx_data *data; 2058 2059 data = &sc->rx_data[i]; 2060 2061 usbd_setup_xfer(data->xfer, data, data->buf, MCLBYTES, 2062 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2063 error = usbd_transfer(data->xfer); 2064 if (error != USBD_NORMAL_COMPLETION && 2065 error != USBD_IN_PROGRESS) { 2066 printf("%s: could not queue Rx transfer\n", 2067 device_xname(sc->sc_dev)); 2068 goto fail; 2069 } 2070 } 2071 2072 /* update Rx filter */ 2073 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2074 2075 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2076 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2077 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2078 RT2573_DROP_ACKCTS; 2079 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2080 tmp |= RT2573_DROP_TODS; 2081 if (!(ifp->if_flags & IFF_PROMISC)) 2082 tmp |= RT2573_DROP_NOT_TO_ME; 2083 } 2084 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2085 2086 ifp->if_flags &= ~IFF_OACTIVE; 2087 ifp->if_flags |= IFF_RUNNING; 2088 2089 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2090 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2091 else 2092 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2093 2094 return 0; 2095 2096 fail: rum_stop(ifp, 1); 2097 return error; 2098 } 2099 2100 static void 2101 rum_stop(struct ifnet *ifp, int disable) 2102 { 2103 struct rum_softc *sc = ifp->if_softc; 2104 struct ieee80211com *ic = &sc->sc_ic; 2105 uint32_t tmp; 2106 2107 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2108 2109 sc->sc_tx_timer = 0; 2110 ifp->if_timer = 0; 2111 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2112 2113 /* disable Rx */ 2114 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2115 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2116 2117 /* reset ASIC */ 2118 rum_write(sc, RT2573_MAC_CSR1, 3); 2119 rum_write(sc, RT2573_MAC_CSR1, 0); 2120 2121 if (sc->amrr_xfer != NULL) { 2122 usbd_destroy_xfer(sc->amrr_xfer); 2123 sc->amrr_xfer = NULL; 2124 } 2125 2126 if (sc->sc_rx_pipeh != NULL) { 2127 usbd_abort_pipe(sc->sc_rx_pipeh); 2128 } 2129 2130 if (sc->sc_tx_pipeh != NULL) { 2131 usbd_abort_pipe(sc->sc_tx_pipeh); 2132 } 2133 2134 rum_free_rx_list(sc); 2135 rum_free_tx_list(sc); 2136 2137 if (sc->sc_rx_pipeh != NULL) { 2138 usbd_close_pipe(sc->sc_rx_pipeh); 2139 sc->sc_rx_pipeh = NULL; 2140 } 2141 2142 if (sc->sc_tx_pipeh != NULL) { 2143 usbd_close_pipe(sc->sc_tx_pipeh); 2144 sc->sc_tx_pipeh = NULL; 2145 } 2146 } 2147 2148 static int 2149 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2150 { 2151 usb_device_request_t req; 2152 uint16_t reg = RT2573_MCU_CODE_BASE; 2153 usbd_status error; 2154 2155 /* copy firmware image into NIC */ 2156 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2157 rum_write(sc, reg, UGETDW(ucode)); 2158 2159 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2160 req.bRequest = RT2573_MCU_CNTL; 2161 USETW(req.wValue, RT2573_MCU_RUN); 2162 USETW(req.wIndex, 0); 2163 USETW(req.wLength, 0); 2164 2165 error = usbd_do_request(sc->sc_udev, &req, NULL); 2166 if (error != 0) { 2167 printf("%s: could not run firmware: %s\n", 2168 device_xname(sc->sc_dev), usbd_errstr(error)); 2169 } 2170 return error; 2171 } 2172 2173 static int 2174 rum_prepare_beacon(struct rum_softc *sc) 2175 { 2176 struct ieee80211com *ic = &sc->sc_ic; 2177 struct rum_tx_desc desc; 2178 struct mbuf *m0; 2179 int rate; 2180 2181 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2182 if (m0 == NULL) { 2183 aprint_error_dev(sc->sc_dev, 2184 "could not allocate beacon frame\n"); 2185 return ENOBUFS; 2186 } 2187 2188 /* send beacons at the lowest available rate */ 2189 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2190 2191 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2192 m0->m_pkthdr.len, rate); 2193 2194 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2195 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2196 2197 /* copy beacon header and payload into NIC memory */ 2198 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2199 m0->m_pkthdr.len); 2200 2201 m_freem(m0); 2202 2203 return 0; 2204 } 2205 2206 static void 2207 rum_newassoc(struct ieee80211_node *ni, int isnew) 2208 { 2209 /* start with lowest Tx rate */ 2210 ni->ni_txrate = 0; 2211 } 2212 2213 static void 2214 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2215 { 2216 int i; 2217 2218 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2219 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); 2220 2221 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2222 2223 /* set rate to some reasonable initial value */ 2224 for (i = ni->ni_rates.rs_nrates - 1; 2225 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2226 i--); 2227 ni->ni_txrate = i; 2228 2229 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2230 } 2231 2232 static void 2233 rum_amrr_timeout(void *arg) 2234 { 2235 struct rum_softc *sc = arg; 2236 usb_device_request_t req; 2237 2238 /* 2239 * Asynchronously read statistic registers (cleared by read). 2240 */ 2241 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2242 req.bRequest = RT2573_READ_MULTI_MAC; 2243 USETW(req.wValue, 0); 2244 USETW(req.wIndex, RT2573_STA_CSR0); 2245 USETW(req.wLength, sizeof(sc->sta)); 2246 2247 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2248 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof(sc->sta), 0, 2249 rum_amrr_update); 2250 (void)usbd_transfer(sc->amrr_xfer); 2251 } 2252 2253 static void 2254 rum_amrr_update(struct usbd_xfer *xfer, void *priv, 2255 usbd_status status) 2256 { 2257 struct rum_softc *sc = (struct rum_softc *)priv; 2258 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2259 2260 if (status != USBD_NORMAL_COMPLETION) { 2261 printf("%s: could not retrieve Tx statistics - cancelling " 2262 "automatic rate control\n", device_xname(sc->sc_dev)); 2263 return; 2264 } 2265 2266 /* count TX retry-fail as Tx errors */ 2267 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2268 2269 sc->amn.amn_retrycnt = 2270 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2271 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2272 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2273 2274 sc->amn.amn_txcnt = 2275 sc->amn.amn_retrycnt + 2276 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2277 2278 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2279 2280 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2281 } 2282 2283 static int 2284 rum_activate(device_t self, enum devact act) 2285 { 2286 switch (act) { 2287 case DVACT_DEACTIVATE: 2288 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2289 return 0; 2290 default: 2291 return 0; 2292 } 2293 } 2294 2295 MODULE(MODULE_CLASS_DRIVER, if_rum, "bpf"); 2296 2297 #ifdef _MODULE 2298 #include "ioconf.c" 2299 #endif 2300 2301 static int 2302 if_rum_modcmd(modcmd_t cmd, void *aux) 2303 { 2304 int error = 0; 2305 2306 switch (cmd) { 2307 case MODULE_CMD_INIT: 2308 #ifdef _MODULE 2309 error = config_init_component(cfdriver_ioconf_rum, 2310 cfattach_ioconf_rum, cfdata_ioconf_rum); 2311 #endif 2312 return error; 2313 case MODULE_CMD_FINI: 2314 #ifdef _MODULE 2315 error = config_fini_component(cfdriver_ioconf_rum, 2316 cfattach_ioconf_rum, cfdata_ioconf_rum); 2317 #endif 2318 return error; 2319 default: 2320 return ENOTTY; 2321 } 2322 } 2323