if_rum.c revision 1.52
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.52 2016/04/23 10:15:31 skrll Exp $ */ 3 4 /*- 5 * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini (at) free.fr> 6 * Copyright (c) 2006 Niall O'Higgins <niallo (at) openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 /*- 22 * Ralink Technology RT2501USB/RT2601USB chipset driver 23 * http://www.ralinktech.com.tw/ 24 */ 25 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: if_rum.c,v 1.52 2016/04/23 10:15:31 skrll Exp $"); 28 29 #include <sys/param.h> 30 #include <sys/sockio.h> 31 #include <sys/sysctl.h> 32 #include <sys/mbuf.h> 33 #include <sys/kernel.h> 34 #include <sys/socket.h> 35 #include <sys/systm.h> 36 #include <sys/module.h> 37 #include <sys/conf.h> 38 #include <sys/device.h> 39 40 #include <sys/bus.h> 41 #include <machine/endian.h> 42 #include <sys/intr.h> 43 44 #include <net/bpf.h> 45 #include <net/if.h> 46 #include <net/if_arp.h> 47 #include <net/if_dl.h> 48 #include <net/if_ether.h> 49 #include <net/if_media.h> 50 #include <net/if_types.h> 51 52 #include <netinet/in.h> 53 #include <netinet/in_systm.h> 54 #include <netinet/in_var.h> 55 #include <netinet/ip.h> 56 57 #include <net80211/ieee80211_netbsd.h> 58 #include <net80211/ieee80211_var.h> 59 #include <net80211/ieee80211_amrr.h> 60 #include <net80211/ieee80211_radiotap.h> 61 62 #include <dev/firmload.h> 63 64 #include <dev/usb/usb.h> 65 #include <dev/usb/usbdi.h> 66 #include <dev/usb/usbdi_util.h> 67 #include <dev/usb/usbdevs.h> 68 69 #include <dev/usb/if_rumreg.h> 70 #include <dev/usb/if_rumvar.h> 71 72 #ifdef RUM_DEBUG 73 #define DPRINTF(x) do { if (rum_debug) printf x; } while (0) 74 #define DPRINTFN(n, x) do { if (rum_debug >= (n)) printf x; } while (0) 75 int rum_debug = 1; 76 #else 77 #define DPRINTF(x) 78 #define DPRINTFN(n, x) 79 #endif 80 81 /* various supported device vendors/products */ 82 static const struct usb_devno rum_devs[] = { 83 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_HWU54DM }, 84 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_2 }, 85 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_3 }, 86 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_4 }, 87 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_WUG2700 }, 88 { USB_VENDOR_AMIT, USB_PRODUCT_AMIT_CGWLUSB2GO }, 89 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_2 }, 90 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_3 }, 91 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 92 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 93 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050C }, 94 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB200 }, 95 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 96 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GR }, 97 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 98 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_RT2573 }, 99 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GL }, 100 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GPX }, 101 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 102 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 103 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 104 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 105 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA110 }, 106 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWA111 }, 107 { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7318 }, 108 { USB_VENDOR_EDIMAX, USB_PRODUCT_EDIMAX_EW7618 }, 109 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 110 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWI05GS }, 111 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 112 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 113 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254LB }, 114 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254V2AP }, 115 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 116 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_G54HP }, 117 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, 118 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HG }, 119 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_WLIUCG }, 120 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 121 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 122 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 123 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_4 }, 124 { USB_VENDOR_NOVATECH, USB_PRODUCT_NOVATECH_RT2573 }, 125 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54HP }, 126 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 127 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 128 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 129 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 130 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_3 }, 131 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 132 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 133 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 134 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 135 { USB_VENDOR_SPARKLAN, USB_PRODUCT_SPARKLAN_RT2573 }, 136 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 }, 137 { USB_VENDOR_ZYXEL, USB_PRODUCT_ZYXEL_RT2573 } 138 }; 139 140 static int rum_attachhook(void *); 141 static int rum_alloc_tx_list(struct rum_softc *); 142 static void rum_free_tx_list(struct rum_softc *); 143 static int rum_alloc_rx_list(struct rum_softc *); 144 static void rum_free_rx_list(struct rum_softc *); 145 static int rum_media_change(struct ifnet *); 146 static void rum_next_scan(void *); 147 static void rum_task(void *); 148 static int rum_newstate(struct ieee80211com *, 149 enum ieee80211_state, int); 150 static void rum_txeof(struct usbd_xfer *, void *, 151 usbd_status); 152 static void rum_rxeof(struct usbd_xfer *, void *, 153 usbd_status); 154 static uint8_t rum_rxrate(const struct rum_rx_desc *); 155 static int rum_ack_rate(struct ieee80211com *, int); 156 static uint16_t rum_txtime(int, int, uint32_t); 157 static uint8_t rum_plcp_signal(int); 158 static void rum_setup_tx_desc(struct rum_softc *, 159 struct rum_tx_desc *, uint32_t, uint16_t, int, 160 int); 161 static int rum_tx_data(struct rum_softc *, struct mbuf *, 162 struct ieee80211_node *); 163 static void rum_start(struct ifnet *); 164 static void rum_watchdog(struct ifnet *); 165 static int rum_ioctl(struct ifnet *, u_long, void *); 166 static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 167 int); 168 static uint32_t rum_read(struct rum_softc *, uint16_t); 169 static void rum_read_multi(struct rum_softc *, uint16_t, void *, 170 int); 171 static void rum_write(struct rum_softc *, uint16_t, uint32_t); 172 static void rum_write_multi(struct rum_softc *, uint16_t, void *, 173 size_t); 174 static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 175 static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 176 static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 177 static void rum_select_antenna(struct rum_softc *); 178 static void rum_enable_mrr(struct rum_softc *); 179 static void rum_set_txpreamble(struct rum_softc *); 180 static void rum_set_basicrates(struct rum_softc *); 181 static void rum_select_band(struct rum_softc *, 182 struct ieee80211_channel *); 183 static void rum_set_chan(struct rum_softc *, 184 struct ieee80211_channel *); 185 static void rum_enable_tsf_sync(struct rum_softc *); 186 static void rum_update_slot(struct rum_softc *); 187 static void rum_set_bssid(struct rum_softc *, const uint8_t *); 188 static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 189 static void rum_update_promisc(struct rum_softc *); 190 static const char *rum_get_rf(int); 191 static void rum_read_eeprom(struct rum_softc *); 192 static int rum_bbp_init(struct rum_softc *); 193 static int rum_init(struct ifnet *); 194 static void rum_stop(struct ifnet *, int); 195 static int rum_load_microcode(struct rum_softc *, const u_char *, 196 size_t); 197 static int rum_prepare_beacon(struct rum_softc *); 198 static void rum_newassoc(struct ieee80211_node *, int); 199 static void rum_amrr_start(struct rum_softc *, 200 struct ieee80211_node *); 201 static void rum_amrr_timeout(void *); 202 static void rum_amrr_update(struct usbd_xfer *, void *, 203 usbd_status); 204 205 /* 206 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 207 */ 208 static const struct ieee80211_rateset rum_rateset_11a = 209 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 210 211 static const struct ieee80211_rateset rum_rateset_11b = 212 { 4, { 2, 4, 11, 22 } }; 213 214 static const struct ieee80211_rateset rum_rateset_11g = 215 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 216 217 static const struct { 218 uint32_t reg; 219 uint32_t val; 220 } rum_def_mac[] = { 221 RT2573_DEF_MAC 222 }; 223 224 static const struct { 225 uint8_t reg; 226 uint8_t val; 227 } rum_def_bbp[] = { 228 RT2573_DEF_BBP 229 }; 230 231 static const struct rfprog { 232 uint8_t chan; 233 uint32_t r1, r2, r3, r4; 234 } rum_rf5226[] = { 235 RT2573_RF5226 236 }, rum_rf5225[] = { 237 RT2573_RF5225 238 }; 239 240 static int rum_match(device_t, cfdata_t, void *); 241 static void rum_attach(device_t, device_t, void *); 242 static int rum_detach(device_t, int); 243 static int rum_activate(device_t, enum devact); 244 extern struct cfdriver rum_cd; 245 CFATTACH_DECL_NEW(rum, sizeof(struct rum_softc), rum_match, rum_attach, 246 rum_detach, rum_activate); 247 248 static int 249 rum_match(device_t parent, cfdata_t match, void *aux) 250 { 251 struct usb_attach_arg *uaa = aux; 252 253 return (usb_lookup(rum_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? 254 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 255 } 256 257 static int 258 rum_attachhook(void *xsc) 259 { 260 struct rum_softc *sc = xsc; 261 firmware_handle_t fwh; 262 const char *name = "rum-rt2573"; 263 u_char *ucode; 264 size_t size; 265 int error; 266 267 if ((error = firmware_open("rum", name, &fwh)) != 0) { 268 printf("%s: failed firmware_open of file %s (error %d)\n", 269 device_xname(sc->sc_dev), name, error); 270 return error; 271 } 272 size = firmware_get_size(fwh); 273 ucode = firmware_malloc(size); 274 if (ucode == NULL) { 275 printf("%s: failed to allocate firmware memory\n", 276 device_xname(sc->sc_dev)); 277 firmware_close(fwh); 278 return ENOMEM; 279 } 280 error = firmware_read(fwh, 0, ucode, size); 281 firmware_close(fwh); 282 if (error != 0) { 283 printf("%s: failed to read firmware (error %d)\n", 284 device_xname(sc->sc_dev), error); 285 firmware_free(ucode, size); 286 return error; 287 } 288 289 if (rum_load_microcode(sc, ucode, size) != 0) { 290 printf("%s: could not load 8051 microcode\n", 291 device_xname(sc->sc_dev)); 292 firmware_free(ucode, size); 293 return ENXIO; 294 } 295 296 firmware_free(ucode, size); 297 sc->sc_flags |= RT2573_FWLOADED; 298 299 return 0; 300 } 301 302 static void 303 rum_attach(device_t parent, device_t self, void *aux) 304 { 305 struct rum_softc *sc = device_private(self); 306 struct usb_attach_arg *uaa = aux; 307 struct ieee80211com *ic = &sc->sc_ic; 308 struct ifnet *ifp = &sc->sc_if; 309 usb_interface_descriptor_t *id; 310 usb_endpoint_descriptor_t *ed; 311 usbd_status error; 312 char *devinfop; 313 int i, ntries; 314 uint32_t tmp; 315 316 sc->sc_dev = self; 317 sc->sc_udev = uaa->uaa_device; 318 sc->sc_flags = 0; 319 320 aprint_naive("\n"); 321 aprint_normal("\n"); 322 323 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 324 aprint_normal_dev(self, "%s\n", devinfop); 325 usbd_devinfo_free(devinfop); 326 327 error = usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0); 328 if (error != 0) { 329 aprint_error_dev(self, "failed to set configuration" 330 ", err=%s\n", usbd_errstr(error)); 331 return; 332 } 333 334 /* get the first interface handle */ 335 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 336 &sc->sc_iface); 337 if (error != 0) { 338 aprint_error_dev(self, "could not get interface handle\n"); 339 return; 340 } 341 342 /* 343 * Find endpoints. 344 */ 345 id = usbd_get_interface_descriptor(sc->sc_iface); 346 347 sc->sc_rx_no = sc->sc_tx_no = -1; 348 for (i = 0; i < id->bNumEndpoints; i++) { 349 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 350 if (ed == NULL) { 351 aprint_error_dev(self, 352 "no endpoint descriptor for iface %d\n", i); 353 return; 354 } 355 356 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 357 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 358 sc->sc_rx_no = ed->bEndpointAddress; 359 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 360 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 361 sc->sc_tx_no = ed->bEndpointAddress; 362 } 363 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 364 aprint_error_dev(self, "missing endpoint\n"); 365 return; 366 } 367 368 usb_init_task(&sc->sc_task, rum_task, sc, 0); 369 callout_init(&sc->sc_scan_ch, 0); 370 371 sc->amrr.amrr_min_success_threshold = 1; 372 sc->amrr.amrr_max_success_threshold = 10; 373 callout_init(&sc->sc_amrr_ch, 0); 374 375 /* retrieve RT2573 rev. no */ 376 for (ntries = 0; ntries < 1000; ntries++) { 377 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 378 break; 379 DELAY(1000); 380 } 381 if (ntries == 1000) { 382 aprint_error_dev(self, "timeout waiting for chip to settle\n"); 383 return; 384 } 385 386 /* retrieve MAC address and various other things from EEPROM */ 387 rum_read_eeprom(sc); 388 389 aprint_normal_dev(self, 390 "MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 391 sc->macbbp_rev, tmp, 392 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 393 394 ic->ic_ifp = ifp; 395 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 396 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 397 ic->ic_state = IEEE80211_S_INIT; 398 399 /* set device capabilities */ 400 ic->ic_caps = 401 IEEE80211_C_IBSS | /* IBSS mode supported */ 402 IEEE80211_C_MONITOR | /* monitor mode supported */ 403 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 404 IEEE80211_C_TXPMGT | /* tx power management */ 405 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 406 IEEE80211_C_SHSLOT | /* short slot time supported */ 407 IEEE80211_C_WPA; /* 802.11i */ 408 409 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 410 /* set supported .11a rates */ 411 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 412 413 /* set supported .11a channels */ 414 for (i = 34; i <= 46; i += 4) { 415 ic->ic_channels[i].ic_freq = 416 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 417 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 418 } 419 for (i = 36; i <= 64; i += 4) { 420 ic->ic_channels[i].ic_freq = 421 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 422 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 423 } 424 for (i = 100; i <= 140; i += 4) { 425 ic->ic_channels[i].ic_freq = 426 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 427 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 428 } 429 for (i = 149; i <= 165; i += 4) { 430 ic->ic_channels[i].ic_freq = 431 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 432 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 433 } 434 } 435 436 /* set supported .11b and .11g rates */ 437 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 438 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 439 440 /* set supported .11b and .11g channels (1 through 14) */ 441 for (i = 1; i <= 14; i++) { 442 ic->ic_channels[i].ic_freq = 443 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 444 ic->ic_channels[i].ic_flags = 445 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 446 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 447 } 448 449 ifp->if_softc = sc; 450 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 451 ifp->if_init = rum_init; 452 ifp->if_ioctl = rum_ioctl; 453 ifp->if_start = rum_start; 454 ifp->if_watchdog = rum_watchdog; 455 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 456 IFQ_SET_READY(&ifp->if_snd); 457 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 458 459 if_attach(ifp); 460 ieee80211_ifattach(ic); 461 ic->ic_newassoc = rum_newassoc; 462 463 /* override state transition machine */ 464 sc->sc_newstate = ic->ic_newstate; 465 ic->ic_newstate = rum_newstate; 466 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 467 468 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 469 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 470 &sc->sc_drvbpf); 471 472 sc->sc_rxtap_len = sizeof(sc->sc_rxtapu); 473 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 474 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 475 476 sc->sc_txtap_len = sizeof(sc->sc_txtapu); 477 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 478 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 479 480 ieee80211_announce(ic); 481 482 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 483 sc->sc_dev); 484 485 if (!pmf_device_register(self, NULL, NULL)) 486 aprint_error_dev(self, "couldn't establish power handler\n"); 487 488 return; 489 } 490 491 static int 492 rum_detach(device_t self, int flags) 493 { 494 struct rum_softc *sc = device_private(self); 495 struct ieee80211com *ic = &sc->sc_ic; 496 struct ifnet *ifp = &sc->sc_if; 497 int s; 498 499 if (!ifp->if_softc) 500 return 0; 501 502 pmf_device_deregister(self); 503 504 s = splusb(); 505 506 rum_stop(ifp, 1); 507 usb_rem_task(sc->sc_udev, &sc->sc_task); 508 callout_stop(&sc->sc_scan_ch); 509 callout_stop(&sc->sc_amrr_ch); 510 511 bpf_detach(ifp); 512 ieee80211_ifdetach(ic); /* free all nodes */ 513 if_detach(ifp); 514 515 splx(s); 516 517 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 518 519 return 0; 520 } 521 522 static int 523 rum_alloc_tx_list(struct rum_softc *sc) 524 { 525 struct rum_tx_data *data; 526 int i, error; 527 528 sc->tx_cur = sc->tx_queued = 0; 529 530 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 531 data = &sc->tx_data[i]; 532 533 data->sc = sc; 534 535 error = usbd_create_xfer(sc->sc_tx_pipeh, 536 RT2573_TX_DESC_SIZE + IEEE80211_MAX_LEN, 537 USBD_FORCE_SHORT_XFER, 0, &data->xfer); 538 if (error) { 539 printf("%s: could not allocate tx xfer\n", 540 device_xname(sc->sc_dev)); 541 goto fail; 542 } 543 data->buf = usbd_get_buffer(data->xfer); 544 545 /* clean Tx descriptor */ 546 memset(data->buf, 0, RT2573_TX_DESC_SIZE); 547 } 548 549 return 0; 550 551 fail: rum_free_tx_list(sc); 552 return error; 553 } 554 555 static void 556 rum_free_tx_list(struct rum_softc *sc) 557 { 558 struct rum_tx_data *data; 559 int i; 560 561 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 562 data = &sc->tx_data[i]; 563 564 if (data->xfer != NULL) { 565 usbd_destroy_xfer(data->xfer); 566 data->xfer = NULL; 567 } 568 569 if (data->ni != NULL) { 570 ieee80211_free_node(data->ni); 571 data->ni = NULL; 572 } 573 } 574 } 575 576 static int 577 rum_alloc_rx_list(struct rum_softc *sc) 578 { 579 struct rum_rx_data *data; 580 int i, error; 581 582 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 583 data = &sc->rx_data[i]; 584 585 data->sc = sc; 586 587 error = usbd_create_xfer(sc->sc_rx_pipeh, MCLBYTES, 588 USBD_SHORT_XFER_OK, 0, &data->xfer); 589 if (error) { 590 printf("%s: could not allocate rx xfer\n", 591 device_xname(sc->sc_dev)); 592 goto fail; 593 } 594 595 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 596 if (data->m == NULL) { 597 printf("%s: could not allocate rx mbuf\n", 598 device_xname(sc->sc_dev)); 599 error = ENOMEM; 600 goto fail; 601 } 602 603 MCLGET(data->m, M_DONTWAIT); 604 if (!(data->m->m_flags & M_EXT)) { 605 printf("%s: could not allocate rx mbuf cluster\n", 606 device_xname(sc->sc_dev)); 607 error = ENOMEM; 608 goto fail; 609 } 610 611 data->buf = mtod(data->m, uint8_t *); 612 } 613 614 return 0; 615 616 fail: rum_free_rx_list(sc); 617 return error; 618 } 619 620 static void 621 rum_free_rx_list(struct rum_softc *sc) 622 { 623 struct rum_rx_data *data; 624 int i; 625 626 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 627 data = &sc->rx_data[i]; 628 629 if (data->xfer != NULL) { 630 usbd_destroy_xfer(data->xfer); 631 data->xfer = NULL; 632 } 633 634 if (data->m != NULL) { 635 m_freem(data->m); 636 data->m = NULL; 637 } 638 } 639 } 640 641 static int 642 rum_media_change(struct ifnet *ifp) 643 { 644 int error; 645 646 error = ieee80211_media_change(ifp); 647 if (error != ENETRESET) 648 return error; 649 650 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 651 rum_init(ifp); 652 653 return 0; 654 } 655 656 /* 657 * This function is called periodically (every 200ms) during scanning to 658 * switch from one channel to another. 659 */ 660 static void 661 rum_next_scan(void *arg) 662 { 663 struct rum_softc *sc = arg; 664 struct ieee80211com *ic = &sc->sc_ic; 665 int s; 666 667 s = splnet(); 668 if (ic->ic_state == IEEE80211_S_SCAN) 669 ieee80211_next_scan(ic); 670 splx(s); 671 } 672 673 static void 674 rum_task(void *arg) 675 { 676 struct rum_softc *sc = arg; 677 struct ieee80211com *ic = &sc->sc_ic; 678 enum ieee80211_state ostate; 679 struct ieee80211_node *ni; 680 uint32_t tmp; 681 682 ostate = ic->ic_state; 683 684 switch (sc->sc_state) { 685 case IEEE80211_S_INIT: 686 if (ostate == IEEE80211_S_RUN) { 687 /* abort TSF synchronization */ 688 tmp = rum_read(sc, RT2573_TXRX_CSR9); 689 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 690 } 691 break; 692 693 case IEEE80211_S_SCAN: 694 rum_set_chan(sc, ic->ic_curchan); 695 callout_reset(&sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 696 break; 697 698 case IEEE80211_S_AUTH: 699 rum_set_chan(sc, ic->ic_curchan); 700 break; 701 702 case IEEE80211_S_ASSOC: 703 rum_set_chan(sc, ic->ic_curchan); 704 break; 705 706 case IEEE80211_S_RUN: 707 rum_set_chan(sc, ic->ic_curchan); 708 709 ni = ic->ic_bss; 710 711 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 712 rum_update_slot(sc); 713 rum_enable_mrr(sc); 714 rum_set_txpreamble(sc); 715 rum_set_basicrates(sc); 716 rum_set_bssid(sc, ni->ni_bssid); 717 } 718 719 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 720 ic->ic_opmode == IEEE80211_M_IBSS) 721 rum_prepare_beacon(sc); 722 723 if (ic->ic_opmode != IEEE80211_M_MONITOR) 724 rum_enable_tsf_sync(sc); 725 726 if (ic->ic_opmode == IEEE80211_M_STA) { 727 /* fake a join to init the tx rate */ 728 rum_newassoc(ic->ic_bss, 1); 729 730 /* enable automatic rate adaptation in STA mode */ 731 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 732 rum_amrr_start(sc, ni); 733 } 734 735 break; 736 } 737 738 sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); 739 } 740 741 static int 742 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 743 { 744 struct rum_softc *sc = ic->ic_ifp->if_softc; 745 746 usb_rem_task(sc->sc_udev, &sc->sc_task); 747 callout_stop(&sc->sc_scan_ch); 748 callout_stop(&sc->sc_amrr_ch); 749 750 /* do it in a process context */ 751 sc->sc_state = nstate; 752 sc->sc_arg = arg; 753 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 754 755 return 0; 756 } 757 758 /* quickly determine if a given rate is CCK or OFDM */ 759 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 760 761 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 762 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 763 764 static void 765 rum_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 766 { 767 struct rum_tx_data *data = priv; 768 struct rum_softc *sc = data->sc; 769 struct ifnet *ifp = &sc->sc_if; 770 int s; 771 772 if (status != USBD_NORMAL_COMPLETION) { 773 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 774 return; 775 776 printf("%s: could not transmit buffer: %s\n", 777 device_xname(sc->sc_dev), usbd_errstr(status)); 778 779 if (status == USBD_STALLED) 780 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 781 782 ifp->if_oerrors++; 783 return; 784 } 785 786 s = splnet(); 787 788 ieee80211_free_node(data->ni); 789 data->ni = NULL; 790 791 sc->tx_queued--; 792 ifp->if_opackets++; 793 794 DPRINTFN(10, ("tx done\n")); 795 796 sc->sc_tx_timer = 0; 797 ifp->if_flags &= ~IFF_OACTIVE; 798 rum_start(ifp); 799 800 splx(s); 801 } 802 803 static void 804 rum_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 805 { 806 struct rum_rx_data *data = priv; 807 struct rum_softc *sc = data->sc; 808 struct ieee80211com *ic = &sc->sc_ic; 809 struct ifnet *ifp = &sc->sc_if; 810 struct rum_rx_desc *desc; 811 struct ieee80211_frame *wh; 812 struct ieee80211_node *ni; 813 struct mbuf *mnew, *m; 814 int s, len; 815 816 if (status != USBD_NORMAL_COMPLETION) { 817 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 818 return; 819 820 if (status == USBD_STALLED) 821 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 822 goto skip; 823 } 824 825 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 826 827 if (len < (int)(RT2573_RX_DESC_SIZE + 828 sizeof(struct ieee80211_frame_min))) { 829 DPRINTF(("%s: xfer too short %d\n", device_xname(sc->sc_dev), 830 len)); 831 ifp->if_ierrors++; 832 goto skip; 833 } 834 835 desc = (struct rum_rx_desc *)data->buf; 836 837 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 838 /* 839 * This should not happen since we did not request to receive 840 * those frames when we filled RT2573_TXRX_CSR0. 841 */ 842 DPRINTFN(5, ("CRC error\n")); 843 ifp->if_ierrors++; 844 goto skip; 845 } 846 847 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 848 if (mnew == NULL) { 849 printf("%s: could not allocate rx mbuf\n", 850 device_xname(sc->sc_dev)); 851 ifp->if_ierrors++; 852 goto skip; 853 } 854 855 MCLGET(mnew, M_DONTWAIT); 856 if (!(mnew->m_flags & M_EXT)) { 857 printf("%s: could not allocate rx mbuf cluster\n", 858 device_xname(sc->sc_dev)); 859 m_freem(mnew); 860 ifp->if_ierrors++; 861 goto skip; 862 } 863 864 m = data->m; 865 data->m = mnew; 866 data->buf = mtod(data->m, uint8_t *); 867 868 /* finalize mbuf */ 869 m->m_pkthdr.rcvif = ifp; 870 m->m_data = (void *)(desc + 1); 871 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 872 873 s = splnet(); 874 875 if (sc->sc_drvbpf != NULL) { 876 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 877 878 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 879 tap->wr_rate = rum_rxrate(desc); 880 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 881 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 882 tap->wr_antenna = sc->rx_ant; 883 tap->wr_antsignal = desc->rssi; 884 885 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 886 } 887 888 wh = mtod(m, struct ieee80211_frame *); 889 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 890 891 /* send the frame to the 802.11 layer */ 892 ieee80211_input(ic, m, ni, desc->rssi, 0); 893 894 /* node is no longer needed */ 895 ieee80211_free_node(ni); 896 897 splx(s); 898 899 DPRINTFN(15, ("rx done\n")); 900 901 skip: /* setup a new transfer */ 902 usbd_setup_xfer(xfer, data, data->buf, MCLBYTES, USBD_SHORT_XFER_OK, 903 USBD_NO_TIMEOUT, rum_rxeof); 904 usbd_transfer(xfer); 905 } 906 907 /* 908 * This function is only used by the Rx radiotap code. It returns the rate at 909 * which a given frame was received. 910 */ 911 static uint8_t 912 rum_rxrate(const struct rum_rx_desc *desc) 913 { 914 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 915 /* reverse function of rum_plcp_signal */ 916 switch (desc->rate) { 917 case 0xb: return 12; 918 case 0xf: return 18; 919 case 0xa: return 24; 920 case 0xe: return 36; 921 case 0x9: return 48; 922 case 0xd: return 72; 923 case 0x8: return 96; 924 case 0xc: return 108; 925 } 926 } else { 927 if (desc->rate == 10) 928 return 2; 929 if (desc->rate == 20) 930 return 4; 931 if (desc->rate == 55) 932 return 11; 933 if (desc->rate == 110) 934 return 22; 935 } 936 return 2; /* should not get there */ 937 } 938 939 /* 940 * Return the expected ack rate for a frame transmitted at rate `rate'. 941 * XXX: this should depend on the destination node basic rate set. 942 */ 943 static int 944 rum_ack_rate(struct ieee80211com *ic, int rate) 945 { 946 switch (rate) { 947 /* CCK rates */ 948 case 2: 949 return 2; 950 case 4: 951 case 11: 952 case 22: 953 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 954 955 /* OFDM rates */ 956 case 12: 957 case 18: 958 return 12; 959 case 24: 960 case 36: 961 return 24; 962 case 48: 963 case 72: 964 case 96: 965 case 108: 966 return 48; 967 } 968 969 /* default to 1Mbps */ 970 return 2; 971 } 972 973 /* 974 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 975 * The function automatically determines the operating mode depending on the 976 * given rate. `flags' indicates whether short preamble is in use or not. 977 */ 978 static uint16_t 979 rum_txtime(int len, int rate, uint32_t flags) 980 { 981 uint16_t txtime; 982 983 if (RUM_RATE_IS_OFDM(rate)) { 984 /* IEEE Std 802.11a-1999, pp. 37 */ 985 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 986 txtime = 16 + 4 + 4 * txtime + 6; 987 } else { 988 /* IEEE Std 802.11b-1999, pp. 28 */ 989 txtime = (16 * len + rate - 1) / rate; 990 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 991 txtime += 72 + 24; 992 else 993 txtime += 144 + 48; 994 } 995 return txtime; 996 } 997 998 static uint8_t 999 rum_plcp_signal(int rate) 1000 { 1001 switch (rate) { 1002 /* CCK rates (returned values are device-dependent) */ 1003 case 2: return 0x0; 1004 case 4: return 0x1; 1005 case 11: return 0x2; 1006 case 22: return 0x3; 1007 1008 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1009 case 12: return 0xb; 1010 case 18: return 0xf; 1011 case 24: return 0xa; 1012 case 36: return 0xe; 1013 case 48: return 0x9; 1014 case 72: return 0xd; 1015 case 96: return 0x8; 1016 case 108: return 0xc; 1017 1018 /* unsupported rates (should not get there) */ 1019 default: return 0xff; 1020 } 1021 } 1022 1023 static void 1024 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1025 uint32_t flags, uint16_t xflags, int len, int rate) 1026 { 1027 struct ieee80211com *ic = &sc->sc_ic; 1028 uint16_t plcp_length; 1029 int remainder; 1030 1031 desc->flags = htole32(flags); 1032 desc->flags |= htole32(RT2573_TX_VALID); 1033 desc->flags |= htole32(len << 16); 1034 1035 desc->xflags = htole16(xflags); 1036 1037 desc->wme = htole16( 1038 RT2573_QID(0) | 1039 RT2573_AIFSN(2) | 1040 RT2573_LOGCWMIN(4) | 1041 RT2573_LOGCWMAX(10)); 1042 1043 /* setup PLCP fields */ 1044 desc->plcp_signal = rum_plcp_signal(rate); 1045 desc->plcp_service = 4; 1046 1047 len += IEEE80211_CRC_LEN; 1048 if (RUM_RATE_IS_OFDM(rate)) { 1049 desc->flags |= htole32(RT2573_TX_OFDM); 1050 1051 plcp_length = len & 0xfff; 1052 desc->plcp_length_hi = plcp_length >> 6; 1053 desc->plcp_length_lo = plcp_length & 0x3f; 1054 } else { 1055 plcp_length = (16 * len + rate - 1) / rate; 1056 if (rate == 22) { 1057 remainder = (16 * len) % 22; 1058 if (remainder != 0 && remainder < 7) 1059 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1060 } 1061 desc->plcp_length_hi = plcp_length >> 8; 1062 desc->plcp_length_lo = plcp_length & 0xff; 1063 1064 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1065 desc->plcp_signal |= 0x08; 1066 } 1067 } 1068 1069 #define RUM_TX_TIMEOUT 5000 1070 1071 static int 1072 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1073 { 1074 struct ieee80211com *ic = &sc->sc_ic; 1075 struct rum_tx_desc *desc; 1076 struct rum_tx_data *data; 1077 struct ieee80211_frame *wh; 1078 struct ieee80211_key *k; 1079 uint32_t flags = 0; 1080 uint16_t dur; 1081 usbd_status error; 1082 int rate, xferlen, pktlen, needrts = 0, needcts = 0; 1083 1084 wh = mtod(m0, struct ieee80211_frame *); 1085 1086 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1087 k = ieee80211_crypto_encap(ic, ni, m0); 1088 if (k == NULL) { 1089 m_freem(m0); 1090 return ENOBUFS; 1091 } 1092 1093 /* packet header may have moved, reset our local pointer */ 1094 wh = mtod(m0, struct ieee80211_frame *); 1095 } 1096 1097 /* compute actual packet length (including CRC and crypto overhead) */ 1098 pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN; 1099 1100 /* pickup a rate */ 1101 if (IEEE80211_IS_MULTICAST(wh->i_addr1) || 1102 ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1103 IEEE80211_FC0_TYPE_MGT)) { 1104 /* mgmt/multicast frames are sent at the lowest avail. rate */ 1105 rate = ni->ni_rates.rs_rates[0]; 1106 } else if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 1107 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1108 } else 1109 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1110 if (rate == 0) 1111 rate = 2; /* XXX should not happen */ 1112 rate &= IEEE80211_RATE_VAL; 1113 1114 /* check if RTS/CTS or CTS-to-self protection must be used */ 1115 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1116 /* multicast frames are not sent at OFDM rates in 802.11b/g */ 1117 if (pktlen > ic->ic_rtsthreshold) { 1118 needrts = 1; /* RTS/CTS based on frame length */ 1119 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1120 RUM_RATE_IS_OFDM(rate)) { 1121 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 1122 needcts = 1; /* CTS-to-self */ 1123 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 1124 needrts = 1; /* RTS/CTS */ 1125 } 1126 } 1127 if (needrts || needcts) { 1128 struct mbuf *mprot; 1129 int protrate, ackrate; 1130 1131 protrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1132 ackrate = rum_ack_rate(ic, rate); 1133 1134 dur = rum_txtime(pktlen, rate, ic->ic_flags) + 1135 rum_txtime(RUM_ACK_SIZE, ackrate, ic->ic_flags) + 1136 2 * sc->sifs; 1137 if (needrts) { 1138 dur += rum_txtime(RUM_CTS_SIZE, rum_ack_rate(ic, 1139 protrate), ic->ic_flags) + sc->sifs; 1140 mprot = ieee80211_get_rts(ic, wh, dur); 1141 } else { 1142 mprot = ieee80211_get_cts_to_self(ic, dur); 1143 } 1144 if (mprot == NULL) { 1145 aprint_error_dev(sc->sc_dev, 1146 "couldn't allocate protection frame\n"); 1147 m_freem(m0); 1148 return ENOBUFS; 1149 } 1150 1151 data = &sc->tx_data[sc->tx_cur]; 1152 desc = (struct rum_tx_desc *)data->buf; 1153 1154 /* avoid multiple free() of the same node for each fragment */ 1155 data->ni = ieee80211_ref_node(ni); 1156 1157 m_copydata(mprot, 0, mprot->m_pkthdr.len, 1158 data->buf + RT2573_TX_DESC_SIZE); 1159 rum_setup_tx_desc(sc, desc, 1160 (needrts ? RT2573_TX_NEED_ACK : 0) | RT2573_TX_MORE_FRAG, 1161 0, mprot->m_pkthdr.len, protrate); 1162 1163 /* no roundup necessary here */ 1164 xferlen = RT2573_TX_DESC_SIZE + mprot->m_pkthdr.len; 1165 1166 /* XXX may want to pass the protection frame to BPF */ 1167 1168 /* mbuf is no longer needed */ 1169 m_freem(mprot); 1170 1171 usbd_setup_xfer(data->xfer, data, data->buf, 1172 xferlen, USBD_FORCE_SHORT_XFER, 1173 RUM_TX_TIMEOUT, rum_txeof); 1174 error = usbd_transfer(data->xfer); 1175 if (error != USBD_NORMAL_COMPLETION && 1176 error != USBD_IN_PROGRESS) { 1177 m_freem(m0); 1178 return error; 1179 } 1180 1181 sc->tx_queued++; 1182 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1183 1184 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1185 } 1186 1187 data = &sc->tx_data[sc->tx_cur]; 1188 desc = (struct rum_tx_desc *)data->buf; 1189 1190 data->ni = ni; 1191 1192 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1193 flags |= RT2573_TX_NEED_ACK; 1194 1195 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1196 ic->ic_flags) + sc->sifs; 1197 *(uint16_t *)wh->i_dur = htole16(dur); 1198 1199 /* tell hardware to set timestamp in probe responses */ 1200 if ((wh->i_fc[0] & 1201 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1202 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1203 flags |= RT2573_TX_TIMESTAMP; 1204 } 1205 1206 if (sc->sc_drvbpf != NULL) { 1207 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1208 1209 tap->wt_flags = 0; 1210 tap->wt_rate = rate; 1211 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1212 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1213 tap->wt_antenna = sc->tx_ant; 1214 1215 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1216 } 1217 1218 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1219 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1220 1221 /* align end on a 4-bytes boundary */ 1222 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1223 1224 /* 1225 * No space left in the last URB to store the extra 4 bytes, force 1226 * sending of another URB. 1227 */ 1228 if ((xferlen % 64) == 0) 1229 xferlen += 4; 1230 1231 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1232 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1233 rate, xferlen)); 1234 1235 /* mbuf is no longer needed */ 1236 m_freem(m0); 1237 1238 usbd_setup_xfer(data->xfer, data, data->buf, xferlen, 1239 USBD_FORCE_SHORT_XFER, RUM_TX_TIMEOUT, rum_txeof); 1240 error = usbd_transfer(data->xfer); 1241 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1242 return error; 1243 1244 sc->tx_queued++; 1245 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1246 1247 return 0; 1248 } 1249 1250 static void 1251 rum_start(struct ifnet *ifp) 1252 { 1253 struct rum_softc *sc = ifp->if_softc; 1254 struct ieee80211com *ic = &sc->sc_ic; 1255 struct ether_header *eh; 1256 struct ieee80211_node *ni; 1257 struct mbuf *m0; 1258 1259 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1260 return; 1261 1262 for (;;) { 1263 IF_POLL(&ic->ic_mgtq, m0); 1264 if (m0 != NULL) { 1265 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1266 ifp->if_flags |= IFF_OACTIVE; 1267 break; 1268 } 1269 IF_DEQUEUE(&ic->ic_mgtq, m0); 1270 1271 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1272 m0->m_pkthdr.rcvif = NULL; 1273 bpf_mtap3(ic->ic_rawbpf, m0); 1274 if (rum_tx_data(sc, m0, ni) != 0) 1275 break; 1276 1277 } else { 1278 if (ic->ic_state != IEEE80211_S_RUN) 1279 break; 1280 IFQ_POLL(&ifp->if_snd, m0); 1281 if (m0 == NULL) 1282 break; 1283 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1284 ifp->if_flags |= IFF_OACTIVE; 1285 break; 1286 } 1287 IFQ_DEQUEUE(&ifp->if_snd, m0); 1288 if (m0->m_len < (int)sizeof(struct ether_header) && 1289 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1290 continue; 1291 1292 eh = mtod(m0, struct ether_header *); 1293 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1294 if (ni == NULL) { 1295 m_freem(m0); 1296 continue; 1297 } 1298 bpf_mtap(ifp, m0); 1299 m0 = ieee80211_encap(ic, m0, ni); 1300 if (m0 == NULL) { 1301 ieee80211_free_node(ni); 1302 continue; 1303 } 1304 bpf_mtap3(ic->ic_rawbpf, m0); 1305 if (rum_tx_data(sc, m0, ni) != 0) { 1306 ieee80211_free_node(ni); 1307 ifp->if_oerrors++; 1308 break; 1309 } 1310 } 1311 1312 sc->sc_tx_timer = 5; 1313 ifp->if_timer = 1; 1314 } 1315 } 1316 1317 static void 1318 rum_watchdog(struct ifnet *ifp) 1319 { 1320 struct rum_softc *sc = ifp->if_softc; 1321 struct ieee80211com *ic = &sc->sc_ic; 1322 1323 ifp->if_timer = 0; 1324 1325 if (sc->sc_tx_timer > 0) { 1326 if (--sc->sc_tx_timer == 0) { 1327 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1328 /*rum_init(ifp); XXX needs a process context! */ 1329 ifp->if_oerrors++; 1330 return; 1331 } 1332 ifp->if_timer = 1; 1333 } 1334 1335 ieee80211_watchdog(ic); 1336 } 1337 1338 static int 1339 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1340 { 1341 #define IS_RUNNING(ifp) \ 1342 (((ifp)->if_flags & IFF_UP) && ((ifp)->if_flags & IFF_RUNNING)) 1343 1344 struct rum_softc *sc = ifp->if_softc; 1345 struct ieee80211com *ic = &sc->sc_ic; 1346 int s, error = 0; 1347 1348 s = splnet(); 1349 1350 switch (cmd) { 1351 case SIOCSIFFLAGS: 1352 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1353 break; 1354 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1355 case IFF_UP|IFF_RUNNING: 1356 rum_update_promisc(sc); 1357 break; 1358 case IFF_UP: 1359 rum_init(ifp); 1360 break; 1361 case IFF_RUNNING: 1362 rum_stop(ifp, 1); 1363 break; 1364 case 0: 1365 break; 1366 } 1367 break; 1368 1369 case SIOCADDMULTI: 1370 case SIOCDELMULTI: 1371 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1372 error = 0; 1373 } 1374 break; 1375 1376 default: 1377 error = ieee80211_ioctl(ic, cmd, data); 1378 } 1379 1380 if (error == ENETRESET) { 1381 if (IS_RUNNING(ifp) && 1382 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1383 rum_init(ifp); 1384 error = 0; 1385 } 1386 1387 splx(s); 1388 1389 return error; 1390 #undef IS_RUNNING 1391 } 1392 1393 static void 1394 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1395 { 1396 usb_device_request_t req; 1397 usbd_status error; 1398 1399 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1400 req.bRequest = RT2573_READ_EEPROM; 1401 USETW(req.wValue, 0); 1402 USETW(req.wIndex, addr); 1403 USETW(req.wLength, len); 1404 1405 error = usbd_do_request(sc->sc_udev, &req, buf); 1406 if (error != 0) { 1407 printf("%s: could not read EEPROM: %s\n", 1408 device_xname(sc->sc_dev), usbd_errstr(error)); 1409 } 1410 } 1411 1412 static uint32_t 1413 rum_read(struct rum_softc *sc, uint16_t reg) 1414 { 1415 uint32_t val; 1416 1417 rum_read_multi(sc, reg, &val, sizeof(val)); 1418 1419 return le32toh(val); 1420 } 1421 1422 static void 1423 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1424 { 1425 usb_device_request_t req; 1426 usbd_status error; 1427 1428 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1429 req.bRequest = RT2573_READ_MULTI_MAC; 1430 USETW(req.wValue, 0); 1431 USETW(req.wIndex, reg); 1432 USETW(req.wLength, len); 1433 1434 error = usbd_do_request(sc->sc_udev, &req, buf); 1435 if (error != 0) { 1436 printf("%s: could not multi read MAC register: %s\n", 1437 device_xname(sc->sc_dev), usbd_errstr(error)); 1438 } 1439 } 1440 1441 static void 1442 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1443 { 1444 uint32_t tmp = htole32(val); 1445 1446 rum_write_multi(sc, reg, &tmp, sizeof(tmp)); 1447 } 1448 1449 static void 1450 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1451 { 1452 usb_device_request_t req; 1453 usbd_status error; 1454 int offset; 1455 1456 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1457 req.bRequest = RT2573_WRITE_MULTI_MAC; 1458 USETW(req.wValue, 0); 1459 1460 /* write at most 64 bytes at a time */ 1461 for (offset = 0; offset < len; offset += 64) { 1462 USETW(req.wIndex, reg + offset); 1463 USETW(req.wLength, MIN(len - offset, 64)); 1464 1465 error = usbd_do_request(sc->sc_udev, &req, (char *)buf + offset); 1466 if (error != 0) { 1467 printf("%s: could not multi write MAC register: %s\n", 1468 device_xname(sc->sc_dev), usbd_errstr(error)); 1469 } 1470 } 1471 } 1472 1473 static void 1474 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1475 { 1476 uint32_t tmp; 1477 int ntries; 1478 1479 for (ntries = 0; ntries < 5; ntries++) { 1480 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1481 break; 1482 } 1483 if (ntries == 5) { 1484 printf("%s: could not write to BBP\n", device_xname(sc->sc_dev)); 1485 return; 1486 } 1487 1488 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1489 rum_write(sc, RT2573_PHY_CSR3, tmp); 1490 } 1491 1492 static uint8_t 1493 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1494 { 1495 uint32_t val; 1496 int ntries; 1497 1498 for (ntries = 0; ntries < 5; ntries++) { 1499 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1500 break; 1501 } 1502 if (ntries == 5) { 1503 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1504 return 0; 1505 } 1506 1507 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1508 rum_write(sc, RT2573_PHY_CSR3, val); 1509 1510 for (ntries = 0; ntries < 100; ntries++) { 1511 val = rum_read(sc, RT2573_PHY_CSR3); 1512 if (!(val & RT2573_BBP_BUSY)) 1513 return val & 0xff; 1514 DELAY(1); 1515 } 1516 1517 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1518 return 0; 1519 } 1520 1521 static void 1522 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1523 { 1524 uint32_t tmp; 1525 int ntries; 1526 1527 for (ntries = 0; ntries < 5; ntries++) { 1528 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1529 break; 1530 } 1531 if (ntries == 5) { 1532 printf("%s: could not write to RF\n", device_xname(sc->sc_dev)); 1533 return; 1534 } 1535 1536 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1537 (reg & 3); 1538 rum_write(sc, RT2573_PHY_CSR4, tmp); 1539 1540 /* remember last written value in sc */ 1541 sc->rf_regs[reg] = val; 1542 1543 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1544 } 1545 1546 static void 1547 rum_select_antenna(struct rum_softc *sc) 1548 { 1549 uint8_t bbp4, bbp77; 1550 uint32_t tmp; 1551 1552 bbp4 = rum_bbp_read(sc, 4); 1553 bbp77 = rum_bbp_read(sc, 77); 1554 1555 /* TBD */ 1556 1557 /* make sure Rx is disabled before switching antenna */ 1558 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1559 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1560 1561 rum_bbp_write(sc, 4, bbp4); 1562 rum_bbp_write(sc, 77, bbp77); 1563 1564 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1565 } 1566 1567 /* 1568 * Enable multi-rate retries for frames sent at OFDM rates. 1569 * In 802.11b/g mode, allow fallback to CCK rates. 1570 */ 1571 static void 1572 rum_enable_mrr(struct rum_softc *sc) 1573 { 1574 struct ieee80211com *ic = &sc->sc_ic; 1575 uint32_t tmp; 1576 1577 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1578 1579 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1580 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1581 tmp |= RT2573_MRR_CCK_FALLBACK; 1582 tmp |= RT2573_MRR_ENABLED; 1583 1584 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1585 } 1586 1587 static void 1588 rum_set_txpreamble(struct rum_softc *sc) 1589 { 1590 uint32_t tmp; 1591 1592 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1593 1594 tmp &= ~RT2573_SHORT_PREAMBLE; 1595 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1596 tmp |= RT2573_SHORT_PREAMBLE; 1597 1598 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1599 } 1600 1601 static void 1602 rum_set_basicrates(struct rum_softc *sc) 1603 { 1604 struct ieee80211com *ic = &sc->sc_ic; 1605 1606 /* update basic rate set */ 1607 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1608 /* 11b basic rates: 1, 2Mbps */ 1609 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1610 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1611 /* 11a basic rates: 6, 12, 24Mbps */ 1612 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1613 } else { 1614 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1615 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1616 } 1617 } 1618 1619 /* 1620 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1621 * driver. 1622 */ 1623 static void 1624 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1625 { 1626 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1627 uint32_t tmp; 1628 1629 /* update all BBP registers that depend on the band */ 1630 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1631 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1632 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1633 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1634 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1635 } 1636 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1637 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1638 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1639 } 1640 1641 sc->bbp17 = bbp17; 1642 rum_bbp_write(sc, 17, bbp17); 1643 rum_bbp_write(sc, 96, bbp96); 1644 rum_bbp_write(sc, 104, bbp104); 1645 1646 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1647 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1648 rum_bbp_write(sc, 75, 0x80); 1649 rum_bbp_write(sc, 86, 0x80); 1650 rum_bbp_write(sc, 88, 0x80); 1651 } 1652 1653 rum_bbp_write(sc, 35, bbp35); 1654 rum_bbp_write(sc, 97, bbp97); 1655 rum_bbp_write(sc, 98, bbp98); 1656 1657 tmp = rum_read(sc, RT2573_PHY_CSR0); 1658 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1659 if (IEEE80211_IS_CHAN_2GHZ(c)) 1660 tmp |= RT2573_PA_PE_2GHZ; 1661 else 1662 tmp |= RT2573_PA_PE_5GHZ; 1663 rum_write(sc, RT2573_PHY_CSR0, tmp); 1664 1665 /* 802.11a uses a 16 microseconds short interframe space */ 1666 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1667 } 1668 1669 static void 1670 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1671 { 1672 struct ieee80211com *ic = &sc->sc_ic; 1673 const struct rfprog *rfprog; 1674 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1675 int8_t power; 1676 u_int i, chan; 1677 1678 chan = ieee80211_chan2ieee(ic, c); 1679 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1680 return; 1681 1682 /* select the appropriate RF settings based on what EEPROM says */ 1683 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1684 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1685 1686 /* find the settings for this channel (we know it exists) */ 1687 for (i = 0; rfprog[i].chan != chan; i++); 1688 1689 power = sc->txpow[i]; 1690 if (power < 0) { 1691 bbp94 += power; 1692 power = 0; 1693 } else if (power > 31) { 1694 bbp94 += power - 31; 1695 power = 31; 1696 } 1697 1698 /* 1699 * If we are switching from the 2GHz band to the 5GHz band or 1700 * vice-versa, BBP registers need to be reprogrammed. 1701 */ 1702 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1703 rum_select_band(sc, c); 1704 rum_select_antenna(sc); 1705 } 1706 ic->ic_curchan = c; 1707 1708 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1709 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1710 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1711 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1712 1713 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1714 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1715 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1716 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1717 1718 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1719 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1720 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1721 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1722 1723 DELAY(10); 1724 1725 /* enable smart mode for MIMO-capable RFs */ 1726 bbp3 = rum_bbp_read(sc, 3); 1727 1728 bbp3 &= ~RT2573_SMART_MODE; 1729 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1730 bbp3 |= RT2573_SMART_MODE; 1731 1732 rum_bbp_write(sc, 3, bbp3); 1733 1734 if (bbp94 != RT2573_BBPR94_DEFAULT) 1735 rum_bbp_write(sc, 94, bbp94); 1736 } 1737 1738 /* 1739 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1740 * and HostAP operating modes. 1741 */ 1742 static void 1743 rum_enable_tsf_sync(struct rum_softc *sc) 1744 { 1745 struct ieee80211com *ic = &sc->sc_ic; 1746 uint32_t tmp; 1747 1748 if (ic->ic_opmode != IEEE80211_M_STA) { 1749 /* 1750 * Change default 16ms TBTT adjustment to 8ms. 1751 * Must be done before enabling beacon generation. 1752 */ 1753 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1754 } 1755 1756 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1757 1758 /* set beacon interval (in 1/16ms unit) */ 1759 tmp |= ic->ic_bss->ni_intval * 16; 1760 1761 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1762 if (ic->ic_opmode == IEEE80211_M_STA) 1763 tmp |= RT2573_TSF_MODE(1); 1764 else 1765 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1766 1767 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1768 } 1769 1770 static void 1771 rum_update_slot(struct rum_softc *sc) 1772 { 1773 struct ieee80211com *ic = &sc->sc_ic; 1774 uint8_t slottime; 1775 uint32_t tmp; 1776 1777 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1778 1779 tmp = rum_read(sc, RT2573_MAC_CSR9); 1780 tmp = (tmp & ~0xff) | slottime; 1781 rum_write(sc, RT2573_MAC_CSR9, tmp); 1782 1783 DPRINTF(("setting slot time to %uus\n", slottime)); 1784 } 1785 1786 static void 1787 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1788 { 1789 uint32_t tmp; 1790 1791 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1792 rum_write(sc, RT2573_MAC_CSR4, tmp); 1793 1794 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1795 rum_write(sc, RT2573_MAC_CSR5, tmp); 1796 } 1797 1798 static void 1799 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1800 { 1801 uint32_t tmp; 1802 1803 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1804 rum_write(sc, RT2573_MAC_CSR2, tmp); 1805 1806 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1807 rum_write(sc, RT2573_MAC_CSR3, tmp); 1808 } 1809 1810 static void 1811 rum_update_promisc(struct rum_softc *sc) 1812 { 1813 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1814 uint32_t tmp; 1815 1816 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1817 1818 tmp &= ~RT2573_DROP_NOT_TO_ME; 1819 if (!(ifp->if_flags & IFF_PROMISC)) 1820 tmp |= RT2573_DROP_NOT_TO_ME; 1821 1822 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1823 1824 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1825 "entering" : "leaving")); 1826 } 1827 1828 static const char * 1829 rum_get_rf(int rev) 1830 { 1831 switch (rev) { 1832 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1833 case RT2573_RF_2528: return "RT2528"; 1834 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1835 case RT2573_RF_5226: return "RT5226"; 1836 default: return "unknown"; 1837 } 1838 } 1839 1840 static void 1841 rum_read_eeprom(struct rum_softc *sc) 1842 { 1843 struct ieee80211com *ic = &sc->sc_ic; 1844 uint16_t val; 1845 #ifdef RUM_DEBUG 1846 int i; 1847 #endif 1848 1849 /* read MAC/BBP type */ 1850 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1851 sc->macbbp_rev = le16toh(val); 1852 1853 /* read MAC address */ 1854 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1855 1856 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1857 val = le16toh(val); 1858 sc->rf_rev = (val >> 11) & 0x1f; 1859 sc->hw_radio = (val >> 10) & 0x1; 1860 sc->rx_ant = (val >> 4) & 0x3; 1861 sc->tx_ant = (val >> 2) & 0x3; 1862 sc->nb_ant = val & 0x3; 1863 1864 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1865 1866 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1867 val = le16toh(val); 1868 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1869 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1870 1871 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1872 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1873 1874 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1875 val = le16toh(val); 1876 if ((val & 0xff) != 0xff) 1877 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1878 1879 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1880 val = le16toh(val); 1881 if ((val & 0xff) != 0xff) 1882 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1883 1884 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1885 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1886 1887 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1888 val = le16toh(val); 1889 if ((val & 0xff) != 0xff) 1890 sc->rffreq = val & 0xff; 1891 1892 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1893 1894 /* read Tx power for all a/b/g channels */ 1895 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1896 /* XXX default Tx power for 802.11a channels */ 1897 memset(sc->txpow + 14, 24, sizeof(sc->txpow) - 14); 1898 #ifdef RUM_DEBUG 1899 for (i = 0; i < 14; i++) 1900 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1901 #endif 1902 1903 /* read default values for BBP registers */ 1904 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1905 #ifdef RUM_DEBUG 1906 for (i = 0; i < 14; i++) { 1907 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1908 continue; 1909 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1910 sc->bbp_prom[i].val)); 1911 } 1912 #endif 1913 } 1914 1915 static int 1916 rum_bbp_init(struct rum_softc *sc) 1917 { 1918 unsigned int i, ntries; 1919 uint8_t val; 1920 1921 /* wait for BBP to be ready */ 1922 for (ntries = 0; ntries < 100; ntries++) { 1923 val = rum_bbp_read(sc, 0); 1924 if (val != 0 && val != 0xff) 1925 break; 1926 DELAY(1000); 1927 } 1928 if (ntries == 100) { 1929 printf("%s: timeout waiting for BBP\n", 1930 device_xname(sc->sc_dev)); 1931 return EIO; 1932 } 1933 1934 /* initialize BBP registers to default values */ 1935 for (i = 0; i < __arraycount(rum_def_bbp); i++) 1936 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1937 1938 /* write vendor-specific BBP values (from EEPROM) */ 1939 for (i = 0; i < 16; i++) { 1940 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1941 continue; 1942 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1943 } 1944 1945 return 0; 1946 } 1947 1948 static int 1949 rum_init(struct ifnet *ifp) 1950 { 1951 struct rum_softc *sc = ifp->if_softc; 1952 struct ieee80211com *ic = &sc->sc_ic; 1953 uint32_t tmp; 1954 usbd_status error = 0; 1955 unsigned int i, ntries; 1956 1957 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1958 if (rum_attachhook(sc)) 1959 goto fail; 1960 } 1961 1962 rum_stop(ifp, 0); 1963 1964 /* initialize MAC registers to default values */ 1965 for (i = 0; i < __arraycount(rum_def_mac); i++) 1966 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1967 1968 /* set host ready */ 1969 rum_write(sc, RT2573_MAC_CSR1, 3); 1970 rum_write(sc, RT2573_MAC_CSR1, 0); 1971 1972 /* wait for BBP/RF to wakeup */ 1973 for (ntries = 0; ntries < 1000; ntries++) { 1974 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1975 break; 1976 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1977 DELAY(1000); 1978 } 1979 if (ntries == 1000) { 1980 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1981 device_xname(sc->sc_dev)); 1982 goto fail; 1983 } 1984 1985 if ((error = rum_bbp_init(sc)) != 0) 1986 goto fail; 1987 1988 /* select default channel */ 1989 rum_select_band(sc, ic->ic_curchan); 1990 rum_select_antenna(sc); 1991 rum_set_chan(sc, ic->ic_curchan); 1992 1993 /* clear STA registers */ 1994 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); 1995 1996 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 1997 rum_set_macaddr(sc, ic->ic_myaddr); 1998 1999 /* initialize ASIC */ 2000 rum_write(sc, RT2573_MAC_CSR1, 4); 2001 2002 /* 2003 * Allocate xfer for AMRR statistics requests. 2004 */ 2005 struct usbd_pipe *pipe0 = usbd_get_pipe0(sc->sc_udev); 2006 error = usbd_create_xfer(pipe0, sizeof(sc->sta), 0, 0, 2007 &sc->amrr_xfer); 2008 if (error) { 2009 printf("%s: could not allocate AMRR xfer\n", 2010 device_xname(sc->sc_dev)); 2011 goto fail; 2012 } 2013 2014 /* 2015 * Open Tx and Rx USB bulk pipes. 2016 */ 2017 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2018 &sc->sc_tx_pipeh); 2019 if (error != 0) { 2020 printf("%s: could not open Tx pipe: %s\n", 2021 device_xname(sc->sc_dev), usbd_errstr(error)); 2022 goto fail; 2023 } 2024 2025 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2026 &sc->sc_rx_pipeh); 2027 if (error != 0) { 2028 printf("%s: could not open Rx pipe: %s\n", 2029 device_xname(sc->sc_dev), usbd_errstr(error)); 2030 goto fail; 2031 } 2032 2033 /* 2034 * Allocate Tx and Rx xfer queues. 2035 */ 2036 error = rum_alloc_tx_list(sc); 2037 if (error != 0) { 2038 printf("%s: could not allocate Tx list\n", 2039 device_xname(sc->sc_dev)); 2040 goto fail; 2041 } 2042 2043 error = rum_alloc_rx_list(sc); 2044 if (error != 0) { 2045 printf("%s: could not allocate Rx list\n", 2046 device_xname(sc->sc_dev)); 2047 goto fail; 2048 } 2049 2050 /* 2051 * Start up the receive pipe. 2052 */ 2053 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2054 struct rum_rx_data *data; 2055 2056 data = &sc->rx_data[i]; 2057 2058 usbd_setup_xfer(data->xfer, data, data->buf, MCLBYTES, 2059 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2060 error = usbd_transfer(data->xfer); 2061 if (error != USBD_NORMAL_COMPLETION && 2062 error != USBD_IN_PROGRESS) { 2063 printf("%s: could not queue Rx transfer\n", 2064 device_xname(sc->sc_dev)); 2065 goto fail; 2066 } 2067 } 2068 2069 /* update Rx filter */ 2070 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2071 2072 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2073 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2074 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2075 RT2573_DROP_ACKCTS; 2076 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2077 tmp |= RT2573_DROP_TODS; 2078 if (!(ifp->if_flags & IFF_PROMISC)) 2079 tmp |= RT2573_DROP_NOT_TO_ME; 2080 } 2081 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2082 2083 ifp->if_flags &= ~IFF_OACTIVE; 2084 ifp->if_flags |= IFF_RUNNING; 2085 2086 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2087 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2088 else 2089 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2090 2091 return 0; 2092 2093 fail: rum_stop(ifp, 1); 2094 return error; 2095 } 2096 2097 static void 2098 rum_stop(struct ifnet *ifp, int disable) 2099 { 2100 struct rum_softc *sc = ifp->if_softc; 2101 struct ieee80211com *ic = &sc->sc_ic; 2102 uint32_t tmp; 2103 2104 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2105 2106 sc->sc_tx_timer = 0; 2107 ifp->if_timer = 0; 2108 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2109 2110 /* disable Rx */ 2111 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2112 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2113 2114 /* reset ASIC */ 2115 rum_write(sc, RT2573_MAC_CSR1, 3); 2116 rum_write(sc, RT2573_MAC_CSR1, 0); 2117 2118 if (sc->amrr_xfer != NULL) { 2119 usbd_destroy_xfer(sc->amrr_xfer); 2120 sc->amrr_xfer = NULL; 2121 } 2122 2123 if (sc->sc_rx_pipeh != NULL) { 2124 usbd_abort_pipe(sc->sc_rx_pipeh); 2125 } 2126 2127 if (sc->sc_tx_pipeh != NULL) { 2128 usbd_abort_pipe(sc->sc_tx_pipeh); 2129 } 2130 2131 rum_free_rx_list(sc); 2132 rum_free_tx_list(sc); 2133 2134 if (sc->sc_rx_pipeh != NULL) { 2135 usbd_close_pipe(sc->sc_rx_pipeh); 2136 sc->sc_rx_pipeh = NULL; 2137 } 2138 2139 if (sc->sc_tx_pipeh != NULL) { 2140 usbd_close_pipe(sc->sc_tx_pipeh); 2141 sc->sc_tx_pipeh = NULL; 2142 } 2143 } 2144 2145 static int 2146 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2147 { 2148 usb_device_request_t req; 2149 uint16_t reg = RT2573_MCU_CODE_BASE; 2150 usbd_status error; 2151 2152 /* copy firmware image into NIC */ 2153 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2154 rum_write(sc, reg, UGETDW(ucode)); 2155 2156 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2157 req.bRequest = RT2573_MCU_CNTL; 2158 USETW(req.wValue, RT2573_MCU_RUN); 2159 USETW(req.wIndex, 0); 2160 USETW(req.wLength, 0); 2161 2162 error = usbd_do_request(sc->sc_udev, &req, NULL); 2163 if (error != 0) { 2164 printf("%s: could not run firmware: %s\n", 2165 device_xname(sc->sc_dev), usbd_errstr(error)); 2166 } 2167 return error; 2168 } 2169 2170 static int 2171 rum_prepare_beacon(struct rum_softc *sc) 2172 { 2173 struct ieee80211com *ic = &sc->sc_ic; 2174 struct rum_tx_desc desc; 2175 struct mbuf *m0; 2176 int rate; 2177 2178 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2179 if (m0 == NULL) { 2180 aprint_error_dev(sc->sc_dev, 2181 "could not allocate beacon frame\n"); 2182 return ENOBUFS; 2183 } 2184 2185 /* send beacons at the lowest available rate */ 2186 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2187 2188 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2189 m0->m_pkthdr.len, rate); 2190 2191 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2192 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2193 2194 /* copy beacon header and payload into NIC memory */ 2195 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2196 m0->m_pkthdr.len); 2197 2198 m_freem(m0); 2199 2200 return 0; 2201 } 2202 2203 static void 2204 rum_newassoc(struct ieee80211_node *ni, int isnew) 2205 { 2206 /* start with lowest Tx rate */ 2207 ni->ni_txrate = 0; 2208 } 2209 2210 static void 2211 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2212 { 2213 int i; 2214 2215 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2216 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); 2217 2218 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2219 2220 /* set rate to some reasonable initial value */ 2221 for (i = ni->ni_rates.rs_nrates - 1; 2222 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2223 i--); 2224 ni->ni_txrate = i; 2225 2226 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2227 } 2228 2229 static void 2230 rum_amrr_timeout(void *arg) 2231 { 2232 struct rum_softc *sc = arg; 2233 usb_device_request_t req; 2234 2235 /* 2236 * Asynchronously read statistic registers (cleared by read). 2237 */ 2238 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2239 req.bRequest = RT2573_READ_MULTI_MAC; 2240 USETW(req.wValue, 0); 2241 USETW(req.wIndex, RT2573_STA_CSR0); 2242 USETW(req.wLength, sizeof(sc->sta)); 2243 2244 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2245 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof(sc->sta), 0, 2246 rum_amrr_update); 2247 (void)usbd_transfer(sc->amrr_xfer); 2248 } 2249 2250 static void 2251 rum_amrr_update(struct usbd_xfer *xfer, void *priv, 2252 usbd_status status) 2253 { 2254 struct rum_softc *sc = (struct rum_softc *)priv; 2255 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2256 2257 if (status != USBD_NORMAL_COMPLETION) { 2258 printf("%s: could not retrieve Tx statistics - cancelling " 2259 "automatic rate control\n", device_xname(sc->sc_dev)); 2260 return; 2261 } 2262 2263 /* count TX retry-fail as Tx errors */ 2264 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2265 2266 sc->amn.amn_retrycnt = 2267 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2268 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2269 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2270 2271 sc->amn.amn_txcnt = 2272 sc->amn.amn_retrycnt + 2273 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2274 2275 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2276 2277 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2278 } 2279 2280 static int 2281 rum_activate(device_t self, enum devact act) 2282 { 2283 switch (act) { 2284 case DVACT_DEACTIVATE: 2285 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2286 return 0; 2287 default: 2288 return 0; 2289 } 2290 } 2291 2292 MODULE(MODULE_CLASS_DRIVER, if_rum, "bpf"); 2293 2294 #ifdef _MODULE 2295 #include "ioconf.c" 2296 #endif 2297 2298 static int 2299 if_rum_modcmd(modcmd_t cmd, void *aux) 2300 { 2301 int error = 0; 2302 2303 switch (cmd) { 2304 case MODULE_CMD_INIT: 2305 #ifdef _MODULE 2306 error = config_init_component(cfdriver_ioconf_rum, 2307 cfattach_ioconf_rum, cfdata_ioconf_rum); 2308 #endif 2309 return error; 2310 case MODULE_CMD_FINI: 2311 #ifdef _MODULE 2312 error = config_fini_component(cfdriver_ioconf_rum, 2313 cfattach_ioconf_rum, cfdata_ioconf_rum); 2314 #endif 2315 return error; 2316 default: 2317 return ENOTTY; 2318 } 2319 } 2320
Indexes created Thu Sep 25 08:09:54 GMT 2025