if_rum.c revision 1.48.4.3
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.48.4.3 2018/08/08 10:17:11 martin Exp $ */ 3 4 /*- 5 * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini (at) free.fr> 6 * Copyright (c) 2006 Niall O'Higgins <niallo (at) openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 /*- 22 * Ralink Technology RT2501USB/RT2601USB chipset driver 23 * http://www.ralinktech.com.tw/ 24 */ 25 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: if_rum.c,v 1.48.4.3 2018/08/08 10:17:11 martin 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 callout_halt(&sc->sc_scan_ch, NULL); 511 callout_halt(&sc->sc_amrr_ch, NULL); 512 usb_rem_task_wait(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER, NULL); 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 0, 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 /* 750 * XXXSMP: This does not wait for the task, if it is in flight, 751 * to complete. If this code works at all, it must rely on the 752 * kernel lock to serialize with the USB task thread. 753 */ 754 usb_rem_task(sc->sc_udev, &sc->sc_task); 755 callout_stop(&sc->sc_scan_ch); 756 callout_stop(&sc->sc_amrr_ch); 757 758 /* do it in a process context */ 759 sc->sc_state = nstate; 760 sc->sc_arg = arg; 761 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 762 763 return 0; 764 } 765 766 /* quickly determine if a given rate is CCK or OFDM */ 767 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 768 769 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 770 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 771 772 static void 773 rum_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 774 { 775 struct rum_tx_data *data = priv; 776 struct rum_softc *sc = data->sc; 777 struct ifnet *ifp = &sc->sc_if; 778 int s; 779 780 if (status != USBD_NORMAL_COMPLETION) { 781 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 782 return; 783 784 printf("%s: could not transmit buffer: %s\n", 785 device_xname(sc->sc_dev), usbd_errstr(status)); 786 787 if (status == USBD_STALLED) 788 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 789 790 ifp->if_oerrors++; 791 return; 792 } 793 794 s = splnet(); 795 796 ieee80211_free_node(data->ni); 797 data->ni = NULL; 798 799 sc->tx_queued--; 800 ifp->if_opackets++; 801 802 DPRINTFN(10, ("tx done\n")); 803 804 sc->sc_tx_timer = 0; 805 ifp->if_flags &= ~IFF_OACTIVE; 806 rum_start(ifp); 807 808 splx(s); 809 } 810 811 static void 812 rum_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 813 { 814 struct rum_rx_data *data = priv; 815 struct rum_softc *sc = data->sc; 816 struct ieee80211com *ic = &sc->sc_ic; 817 struct ifnet *ifp = &sc->sc_if; 818 struct rum_rx_desc *desc; 819 struct ieee80211_frame *wh; 820 struct ieee80211_node *ni; 821 struct mbuf *mnew, *m; 822 int s, len; 823 824 if (status != USBD_NORMAL_COMPLETION) { 825 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 826 return; 827 828 if (status == USBD_STALLED) 829 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 830 goto skip; 831 } 832 833 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 834 835 if (len < (int)(RT2573_RX_DESC_SIZE + 836 sizeof(struct ieee80211_frame_min))) { 837 DPRINTF(("%s: xfer too short %d\n", device_xname(sc->sc_dev), 838 len)); 839 ifp->if_ierrors++; 840 goto skip; 841 } 842 843 desc = (struct rum_rx_desc *)data->buf; 844 845 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 846 /* 847 * This should not happen since we did not request to receive 848 * those frames when we filled RT2573_TXRX_CSR0. 849 */ 850 DPRINTFN(5, ("CRC error\n")); 851 ifp->if_ierrors++; 852 goto skip; 853 } 854 855 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 856 if (mnew == NULL) { 857 printf("%s: could not allocate rx mbuf\n", 858 device_xname(sc->sc_dev)); 859 ifp->if_ierrors++; 860 goto skip; 861 } 862 863 MCLGET(mnew, M_DONTWAIT); 864 if (!(mnew->m_flags & M_EXT)) { 865 printf("%s: could not allocate rx mbuf cluster\n", 866 device_xname(sc->sc_dev)); 867 m_freem(mnew); 868 ifp->if_ierrors++; 869 goto skip; 870 } 871 872 m = data->m; 873 data->m = mnew; 874 data->buf = mtod(data->m, uint8_t *); 875 876 /* finalize mbuf */ 877 m->m_pkthdr.rcvif = ifp; 878 m->m_data = (void *)(desc + 1); 879 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 880 881 s = splnet(); 882 883 if (sc->sc_drvbpf != NULL) { 884 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 885 886 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 887 tap->wr_rate = rum_rxrate(desc); 888 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 889 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 890 tap->wr_antenna = sc->rx_ant; 891 tap->wr_antsignal = desc->rssi; 892 893 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 894 } 895 896 wh = mtod(m, struct ieee80211_frame *); 897 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 898 899 /* send the frame to the 802.11 layer */ 900 ieee80211_input(ic, m, ni, desc->rssi, 0); 901 902 /* node is no longer needed */ 903 ieee80211_free_node(ni); 904 905 splx(s); 906 907 DPRINTFN(15, ("rx done\n")); 908 909 skip: /* setup a new transfer */ 910 usbd_setup_xfer(xfer, data, data->buf, MCLBYTES, USBD_SHORT_XFER_OK, 911 USBD_NO_TIMEOUT, rum_rxeof); 912 usbd_transfer(xfer); 913 } 914 915 /* 916 * This function is only used by the Rx radiotap code. It returns the rate at 917 * which a given frame was received. 918 */ 919 static uint8_t 920 rum_rxrate(const struct rum_rx_desc *desc) 921 { 922 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 923 /* reverse function of rum_plcp_signal */ 924 switch (desc->rate) { 925 case 0xb: return 12; 926 case 0xf: return 18; 927 case 0xa: return 24; 928 case 0xe: return 36; 929 case 0x9: return 48; 930 case 0xd: return 72; 931 case 0x8: return 96; 932 case 0xc: return 108; 933 } 934 } else { 935 if (desc->rate == 10) 936 return 2; 937 if (desc->rate == 20) 938 return 4; 939 if (desc->rate == 55) 940 return 11; 941 if (desc->rate == 110) 942 return 22; 943 } 944 return 2; /* should not get there */ 945 } 946 947 /* 948 * Return the expected ack rate for a frame transmitted at rate `rate'. 949 * XXX: this should depend on the destination node basic rate set. 950 */ 951 static int 952 rum_ack_rate(struct ieee80211com *ic, int rate) 953 { 954 switch (rate) { 955 /* CCK rates */ 956 case 2: 957 return 2; 958 case 4: 959 case 11: 960 case 22: 961 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 962 963 /* OFDM rates */ 964 case 12: 965 case 18: 966 return 12; 967 case 24: 968 case 36: 969 return 24; 970 case 48: 971 case 72: 972 case 96: 973 case 108: 974 return 48; 975 } 976 977 /* default to 1Mbps */ 978 return 2; 979 } 980 981 /* 982 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 983 * The function automatically determines the operating mode depending on the 984 * given rate. `flags' indicates whether short preamble is in use or not. 985 */ 986 static uint16_t 987 rum_txtime(int len, int rate, uint32_t flags) 988 { 989 uint16_t txtime; 990 991 if (RUM_RATE_IS_OFDM(rate)) { 992 /* IEEE Std 802.11a-1999, pp. 37 */ 993 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 994 txtime = 16 + 4 + 4 * txtime + 6; 995 } else { 996 /* IEEE Std 802.11b-1999, pp. 28 */ 997 txtime = (16 * len + rate - 1) / rate; 998 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 999 txtime += 72 + 24; 1000 else 1001 txtime += 144 + 48; 1002 } 1003 return txtime; 1004 } 1005 1006 static uint8_t 1007 rum_plcp_signal(int rate) 1008 { 1009 switch (rate) { 1010 /* CCK rates (returned values are device-dependent) */ 1011 case 2: return 0x0; 1012 case 4: return 0x1; 1013 case 11: return 0x2; 1014 case 22: return 0x3; 1015 1016 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1017 case 12: return 0xb; 1018 case 18: return 0xf; 1019 case 24: return 0xa; 1020 case 36: return 0xe; 1021 case 48: return 0x9; 1022 case 72: return 0xd; 1023 case 96: return 0x8; 1024 case 108: return 0xc; 1025 1026 /* unsupported rates (should not get there) */ 1027 default: return 0xff; 1028 } 1029 } 1030 1031 static void 1032 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1033 uint32_t flags, uint16_t xflags, int len, int rate) 1034 { 1035 struct ieee80211com *ic = &sc->sc_ic; 1036 uint16_t plcp_length; 1037 int remainder; 1038 1039 desc->flags = htole32(flags); 1040 desc->flags |= htole32(RT2573_TX_VALID); 1041 desc->flags |= htole32(len << 16); 1042 1043 desc->xflags = htole16(xflags); 1044 1045 desc->wme = htole16( 1046 RT2573_QID(0) | 1047 RT2573_AIFSN(2) | 1048 RT2573_LOGCWMIN(4) | 1049 RT2573_LOGCWMAX(10)); 1050 1051 /* setup PLCP fields */ 1052 desc->plcp_signal = rum_plcp_signal(rate); 1053 desc->plcp_service = 4; 1054 1055 len += IEEE80211_CRC_LEN; 1056 if (RUM_RATE_IS_OFDM(rate)) { 1057 desc->flags |= htole32(RT2573_TX_OFDM); 1058 1059 plcp_length = len & 0xfff; 1060 desc->plcp_length_hi = plcp_length >> 6; 1061 desc->plcp_length_lo = plcp_length & 0x3f; 1062 } else { 1063 plcp_length = (16 * len + rate - 1) / rate; 1064 if (rate == 22) { 1065 remainder = (16 * len) % 22; 1066 if (remainder != 0 && remainder < 7) 1067 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1068 } 1069 desc->plcp_length_hi = plcp_length >> 8; 1070 desc->plcp_length_lo = plcp_length & 0xff; 1071 1072 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1073 desc->plcp_signal |= 0x08; 1074 } 1075 } 1076 1077 #define RUM_TX_TIMEOUT 5000 1078 1079 static int 1080 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1081 { 1082 struct ieee80211com *ic = &sc->sc_ic; 1083 struct rum_tx_desc *desc; 1084 struct rum_tx_data *data; 1085 struct ieee80211_frame *wh; 1086 struct ieee80211_key *k; 1087 uint32_t flags = 0; 1088 uint16_t dur; 1089 usbd_status error; 1090 int rate, xferlen, pktlen, needrts = 0, needcts = 0; 1091 1092 wh = mtod(m0, struct ieee80211_frame *); 1093 1094 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1095 k = ieee80211_crypto_encap(ic, ni, m0); 1096 if (k == NULL) { 1097 m_freem(m0); 1098 return ENOBUFS; 1099 } 1100 1101 /* packet header may have moved, reset our local pointer */ 1102 wh = mtod(m0, struct ieee80211_frame *); 1103 } 1104 1105 /* compute actual packet length (including CRC and crypto overhead) */ 1106 pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN; 1107 1108 /* pickup a rate */ 1109 if (IEEE80211_IS_MULTICAST(wh->i_addr1) || 1110 ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1111 IEEE80211_FC0_TYPE_MGT)) { 1112 /* mgmt/multicast frames are sent at the lowest avail. rate */ 1113 rate = ni->ni_rates.rs_rates[0]; 1114 } else if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 1115 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1116 } else 1117 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1118 if (rate == 0) 1119 rate = 2; /* XXX should not happen */ 1120 rate &= IEEE80211_RATE_VAL; 1121 1122 /* check if RTS/CTS or CTS-to-self protection must be used */ 1123 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1124 /* multicast frames are not sent at OFDM rates in 802.11b/g */ 1125 if (pktlen > ic->ic_rtsthreshold) { 1126 needrts = 1; /* RTS/CTS based on frame length */ 1127 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1128 RUM_RATE_IS_OFDM(rate)) { 1129 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 1130 needcts = 1; /* CTS-to-self */ 1131 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 1132 needrts = 1; /* RTS/CTS */ 1133 } 1134 } 1135 if (needrts || needcts) { 1136 struct mbuf *mprot; 1137 int protrate, ackrate; 1138 1139 protrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1140 ackrate = rum_ack_rate(ic, rate); 1141 1142 dur = rum_txtime(pktlen, rate, ic->ic_flags) + 1143 rum_txtime(RUM_ACK_SIZE, ackrate, ic->ic_flags) + 1144 2 * sc->sifs; 1145 if (needrts) { 1146 dur += rum_txtime(RUM_CTS_SIZE, rum_ack_rate(ic, 1147 protrate), ic->ic_flags) + sc->sifs; 1148 mprot = ieee80211_get_rts(ic, wh, dur); 1149 } else { 1150 mprot = ieee80211_get_cts_to_self(ic, dur); 1151 } 1152 if (mprot == NULL) { 1153 aprint_error_dev(sc->sc_dev, 1154 "couldn't allocate protection frame\n"); 1155 m_freem(m0); 1156 return ENOBUFS; 1157 } 1158 1159 data = &sc->tx_data[sc->tx_cur]; 1160 desc = (struct rum_tx_desc *)data->buf; 1161 1162 /* avoid multiple free() of the same node for each fragment */ 1163 data->ni = ieee80211_ref_node(ni); 1164 1165 m_copydata(mprot, 0, mprot->m_pkthdr.len, 1166 data->buf + RT2573_TX_DESC_SIZE); 1167 rum_setup_tx_desc(sc, desc, 1168 (needrts ? RT2573_TX_NEED_ACK : 0) | RT2573_TX_MORE_FRAG, 1169 0, mprot->m_pkthdr.len, protrate); 1170 1171 /* no roundup necessary here */ 1172 xferlen = RT2573_TX_DESC_SIZE + mprot->m_pkthdr.len; 1173 1174 /* XXX may want to pass the protection frame to BPF */ 1175 1176 /* mbuf is no longer needed */ 1177 m_freem(mprot); 1178 1179 usbd_setup_xfer(data->xfer, data, data->buf, 1180 xferlen, USBD_FORCE_SHORT_XFER, 1181 RUM_TX_TIMEOUT, rum_txeof); 1182 error = usbd_transfer(data->xfer); 1183 if (error != USBD_NORMAL_COMPLETION && 1184 error != USBD_IN_PROGRESS) { 1185 m_freem(m0); 1186 return error; 1187 } 1188 1189 sc->tx_queued++; 1190 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1191 1192 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1193 } 1194 1195 data = &sc->tx_data[sc->tx_cur]; 1196 desc = (struct rum_tx_desc *)data->buf; 1197 1198 data->ni = ni; 1199 1200 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1201 flags |= RT2573_TX_NEED_ACK; 1202 1203 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1204 ic->ic_flags) + sc->sifs; 1205 *(uint16_t *)wh->i_dur = htole16(dur); 1206 1207 /* tell hardware to set timestamp in probe responses */ 1208 if ((wh->i_fc[0] & 1209 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1210 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1211 flags |= RT2573_TX_TIMESTAMP; 1212 } 1213 1214 if (sc->sc_drvbpf != NULL) { 1215 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1216 1217 tap->wt_flags = 0; 1218 tap->wt_rate = rate; 1219 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1220 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1221 tap->wt_antenna = sc->tx_ant; 1222 1223 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1224 } 1225 1226 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1227 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1228 1229 /* align end on a 4-bytes boundary */ 1230 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1231 1232 /* 1233 * No space left in the last URB to store the extra 4 bytes, force 1234 * sending of another URB. 1235 */ 1236 if ((xferlen % 64) == 0) 1237 xferlen += 4; 1238 1239 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1240 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1241 rate, xferlen)); 1242 1243 /* mbuf is no longer needed */ 1244 m_freem(m0); 1245 1246 usbd_setup_xfer(data->xfer, data, data->buf, xferlen, 1247 USBD_FORCE_SHORT_XFER, RUM_TX_TIMEOUT, rum_txeof); 1248 error = usbd_transfer(data->xfer); 1249 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1250 return error; 1251 1252 sc->tx_queued++; 1253 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1254 1255 return 0; 1256 } 1257 1258 static void 1259 rum_start(struct ifnet *ifp) 1260 { 1261 struct rum_softc *sc = ifp->if_softc; 1262 struct ieee80211com *ic = &sc->sc_ic; 1263 struct ether_header *eh; 1264 struct ieee80211_node *ni; 1265 struct mbuf *m0; 1266 1267 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1268 return; 1269 1270 for (;;) { 1271 IF_POLL(&ic->ic_mgtq, m0); 1272 if (m0 != NULL) { 1273 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1274 ifp->if_flags |= IFF_OACTIVE; 1275 break; 1276 } 1277 IF_DEQUEUE(&ic->ic_mgtq, m0); 1278 1279 ni = M_GETCTX(m0, struct ieee80211_node *); 1280 M_CLEARCTX(m0); 1281 bpf_mtap3(ic->ic_rawbpf, m0); 1282 if (rum_tx_data(sc, m0, ni) != 0) 1283 break; 1284 1285 } else { 1286 if (ic->ic_state != IEEE80211_S_RUN) 1287 break; 1288 IFQ_POLL(&ifp->if_snd, m0); 1289 if (m0 == NULL) 1290 break; 1291 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1292 ifp->if_flags |= IFF_OACTIVE; 1293 break; 1294 } 1295 IFQ_DEQUEUE(&ifp->if_snd, m0); 1296 if (m0->m_len < (int)sizeof(struct ether_header) && 1297 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1298 continue; 1299 1300 eh = mtod(m0, struct ether_header *); 1301 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1302 if (ni == NULL) { 1303 m_freem(m0); 1304 continue; 1305 } 1306 bpf_mtap(ifp, m0); 1307 m0 = ieee80211_encap(ic, m0, ni); 1308 if (m0 == NULL) { 1309 ieee80211_free_node(ni); 1310 continue; 1311 } 1312 bpf_mtap3(ic->ic_rawbpf, m0); 1313 if (rum_tx_data(sc, m0, ni) != 0) { 1314 ieee80211_free_node(ni); 1315 ifp->if_oerrors++; 1316 break; 1317 } 1318 } 1319 1320 sc->sc_tx_timer = 5; 1321 ifp->if_timer = 1; 1322 } 1323 } 1324 1325 static void 1326 rum_watchdog(struct ifnet *ifp) 1327 { 1328 struct rum_softc *sc = ifp->if_softc; 1329 struct ieee80211com *ic = &sc->sc_ic; 1330 1331 ifp->if_timer = 0; 1332 1333 if (sc->sc_tx_timer > 0) { 1334 if (--sc->sc_tx_timer == 0) { 1335 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1336 /*rum_init(ifp); XXX needs a process context! */ 1337 ifp->if_oerrors++; 1338 return; 1339 } 1340 ifp->if_timer = 1; 1341 } 1342 1343 ieee80211_watchdog(ic); 1344 } 1345 1346 static int 1347 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1348 { 1349 #define IS_RUNNING(ifp) \ 1350 (((ifp)->if_flags & IFF_UP) && ((ifp)->if_flags & IFF_RUNNING)) 1351 1352 struct rum_softc *sc = ifp->if_softc; 1353 struct ieee80211com *ic = &sc->sc_ic; 1354 int s, error = 0; 1355 1356 s = splnet(); 1357 1358 switch (cmd) { 1359 case SIOCSIFFLAGS: 1360 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1361 break; 1362 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1363 case IFF_UP|IFF_RUNNING: 1364 rum_update_promisc(sc); 1365 break; 1366 case IFF_UP: 1367 rum_init(ifp); 1368 break; 1369 case IFF_RUNNING: 1370 rum_stop(ifp, 1); 1371 break; 1372 case 0: 1373 break; 1374 } 1375 break; 1376 1377 case SIOCADDMULTI: 1378 case SIOCDELMULTI: 1379 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1380 error = 0; 1381 } 1382 break; 1383 1384 default: 1385 error = ieee80211_ioctl(ic, cmd, data); 1386 } 1387 1388 if (error == ENETRESET) { 1389 if (IS_RUNNING(ifp) && 1390 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1391 rum_init(ifp); 1392 error = 0; 1393 } 1394 1395 splx(s); 1396 1397 return error; 1398 #undef IS_RUNNING 1399 } 1400 1401 static void 1402 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1403 { 1404 usb_device_request_t req; 1405 usbd_status error; 1406 1407 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1408 req.bRequest = RT2573_READ_EEPROM; 1409 USETW(req.wValue, 0); 1410 USETW(req.wIndex, addr); 1411 USETW(req.wLength, len); 1412 1413 error = usbd_do_request(sc->sc_udev, &req, buf); 1414 if (error != 0) { 1415 printf("%s: could not read EEPROM: %s\n", 1416 device_xname(sc->sc_dev), usbd_errstr(error)); 1417 } 1418 } 1419 1420 static uint32_t 1421 rum_read(struct rum_softc *sc, uint16_t reg) 1422 { 1423 uint32_t val; 1424 1425 rum_read_multi(sc, reg, &val, sizeof(val)); 1426 1427 return le32toh(val); 1428 } 1429 1430 static void 1431 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1432 { 1433 usb_device_request_t req; 1434 usbd_status error; 1435 1436 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1437 req.bRequest = RT2573_READ_MULTI_MAC; 1438 USETW(req.wValue, 0); 1439 USETW(req.wIndex, reg); 1440 USETW(req.wLength, len); 1441 1442 error = usbd_do_request(sc->sc_udev, &req, buf); 1443 if (error != 0) { 1444 printf("%s: could not multi read MAC register: %s\n", 1445 device_xname(sc->sc_dev), usbd_errstr(error)); 1446 } 1447 } 1448 1449 static void 1450 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1451 { 1452 uint32_t tmp = htole32(val); 1453 1454 rum_write_multi(sc, reg, &tmp, sizeof(tmp)); 1455 } 1456 1457 static void 1458 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1459 { 1460 usb_device_request_t req; 1461 usbd_status error; 1462 int offset; 1463 1464 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1465 req.bRequest = RT2573_WRITE_MULTI_MAC; 1466 USETW(req.wValue, 0); 1467 1468 /* write at most 64 bytes at a time */ 1469 for (offset = 0; offset < len; offset += 64) { 1470 USETW(req.wIndex, reg + offset); 1471 USETW(req.wLength, MIN(len - offset, 64)); 1472 1473 error = usbd_do_request(sc->sc_udev, &req, (char *)buf + offset); 1474 if (error != 0) { 1475 printf("%s: could not multi write MAC register: %s\n", 1476 device_xname(sc->sc_dev), usbd_errstr(error)); 1477 } 1478 } 1479 } 1480 1481 static void 1482 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1483 { 1484 uint32_t tmp; 1485 int ntries; 1486 1487 for (ntries = 0; ntries < 5; ntries++) { 1488 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1489 break; 1490 } 1491 if (ntries == 5) { 1492 printf("%s: could not write to BBP\n", device_xname(sc->sc_dev)); 1493 return; 1494 } 1495 1496 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1497 rum_write(sc, RT2573_PHY_CSR3, tmp); 1498 } 1499 1500 static uint8_t 1501 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1502 { 1503 uint32_t val; 1504 int ntries; 1505 1506 for (ntries = 0; ntries < 5; ntries++) { 1507 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1508 break; 1509 } 1510 if (ntries == 5) { 1511 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1512 return 0; 1513 } 1514 1515 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1516 rum_write(sc, RT2573_PHY_CSR3, val); 1517 1518 for (ntries = 0; ntries < 100; ntries++) { 1519 val = rum_read(sc, RT2573_PHY_CSR3); 1520 if (!(val & RT2573_BBP_BUSY)) 1521 return val & 0xff; 1522 DELAY(1); 1523 } 1524 1525 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1526 return 0; 1527 } 1528 1529 static void 1530 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1531 { 1532 uint32_t tmp; 1533 int ntries; 1534 1535 for (ntries = 0; ntries < 5; ntries++) { 1536 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1537 break; 1538 } 1539 if (ntries == 5) { 1540 printf("%s: could not write to RF\n", device_xname(sc->sc_dev)); 1541 return; 1542 } 1543 1544 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1545 (reg & 3); 1546 rum_write(sc, RT2573_PHY_CSR4, tmp); 1547 1548 /* remember last written value in sc */ 1549 sc->rf_regs[reg] = val; 1550 1551 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1552 } 1553 1554 static void 1555 rum_select_antenna(struct rum_softc *sc) 1556 { 1557 uint8_t bbp4, bbp77; 1558 uint32_t tmp; 1559 1560 bbp4 = rum_bbp_read(sc, 4); 1561 bbp77 = rum_bbp_read(sc, 77); 1562 1563 /* TBD */ 1564 1565 /* make sure Rx is disabled before switching antenna */ 1566 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1567 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1568 1569 rum_bbp_write(sc, 4, bbp4); 1570 rum_bbp_write(sc, 77, bbp77); 1571 1572 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1573 } 1574 1575 /* 1576 * Enable multi-rate retries for frames sent at OFDM rates. 1577 * In 802.11b/g mode, allow fallback to CCK rates. 1578 */ 1579 static void 1580 rum_enable_mrr(struct rum_softc *sc) 1581 { 1582 struct ieee80211com *ic = &sc->sc_ic; 1583 uint32_t tmp; 1584 1585 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1586 1587 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1588 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1589 tmp |= RT2573_MRR_CCK_FALLBACK; 1590 tmp |= RT2573_MRR_ENABLED; 1591 1592 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1593 } 1594 1595 static void 1596 rum_set_txpreamble(struct rum_softc *sc) 1597 { 1598 uint32_t tmp; 1599 1600 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1601 1602 tmp &= ~RT2573_SHORT_PREAMBLE; 1603 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1604 tmp |= RT2573_SHORT_PREAMBLE; 1605 1606 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1607 } 1608 1609 static void 1610 rum_set_basicrates(struct rum_softc *sc) 1611 { 1612 struct ieee80211com *ic = &sc->sc_ic; 1613 1614 /* update basic rate set */ 1615 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1616 /* 11b basic rates: 1, 2Mbps */ 1617 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1618 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1619 /* 11a basic rates: 6, 12, 24Mbps */ 1620 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1621 } else { 1622 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1623 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1624 } 1625 } 1626 1627 /* 1628 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1629 * driver. 1630 */ 1631 static void 1632 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1633 { 1634 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1635 uint32_t tmp; 1636 1637 /* update all BBP registers that depend on the band */ 1638 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1639 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1640 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1641 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1642 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1643 } 1644 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1645 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1646 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1647 } 1648 1649 sc->bbp17 = bbp17; 1650 rum_bbp_write(sc, 17, bbp17); 1651 rum_bbp_write(sc, 96, bbp96); 1652 rum_bbp_write(sc, 104, bbp104); 1653 1654 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1655 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1656 rum_bbp_write(sc, 75, 0x80); 1657 rum_bbp_write(sc, 86, 0x80); 1658 rum_bbp_write(sc, 88, 0x80); 1659 } 1660 1661 rum_bbp_write(sc, 35, bbp35); 1662 rum_bbp_write(sc, 97, bbp97); 1663 rum_bbp_write(sc, 98, bbp98); 1664 1665 tmp = rum_read(sc, RT2573_PHY_CSR0); 1666 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1667 if (IEEE80211_IS_CHAN_2GHZ(c)) 1668 tmp |= RT2573_PA_PE_2GHZ; 1669 else 1670 tmp |= RT2573_PA_PE_5GHZ; 1671 rum_write(sc, RT2573_PHY_CSR0, tmp); 1672 1673 /* 802.11a uses a 16 microseconds short interframe space */ 1674 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1675 } 1676 1677 static void 1678 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1679 { 1680 struct ieee80211com *ic = &sc->sc_ic; 1681 const struct rfprog *rfprog; 1682 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1683 int8_t power; 1684 u_int i, chan; 1685 1686 chan = ieee80211_chan2ieee(ic, c); 1687 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1688 return; 1689 1690 /* select the appropriate RF settings based on what EEPROM says */ 1691 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1692 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1693 1694 /* find the settings for this channel (we know it exists) */ 1695 for (i = 0; rfprog[i].chan != chan; i++); 1696 1697 power = sc->txpow[i]; 1698 if (power < 0) { 1699 bbp94 += power; 1700 power = 0; 1701 } else if (power > 31) { 1702 bbp94 += power - 31; 1703 power = 31; 1704 } 1705 1706 /* 1707 * If we are switching from the 2GHz band to the 5GHz band or 1708 * vice-versa, BBP registers need to be reprogrammed. 1709 */ 1710 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1711 rum_select_band(sc, c); 1712 rum_select_antenna(sc); 1713 } 1714 ic->ic_curchan = c; 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); 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 | 1); 1724 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1725 1726 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1727 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1728 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1729 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1730 1731 DELAY(10); 1732 1733 /* enable smart mode for MIMO-capable RFs */ 1734 bbp3 = rum_bbp_read(sc, 3); 1735 1736 bbp3 &= ~RT2573_SMART_MODE; 1737 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1738 bbp3 |= RT2573_SMART_MODE; 1739 1740 rum_bbp_write(sc, 3, bbp3); 1741 1742 if (bbp94 != RT2573_BBPR94_DEFAULT) 1743 rum_bbp_write(sc, 94, bbp94); 1744 } 1745 1746 /* 1747 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1748 * and HostAP operating modes. 1749 */ 1750 static void 1751 rum_enable_tsf_sync(struct rum_softc *sc) 1752 { 1753 struct ieee80211com *ic = &sc->sc_ic; 1754 uint32_t tmp; 1755 1756 if (ic->ic_opmode != IEEE80211_M_STA) { 1757 /* 1758 * Change default 16ms TBTT adjustment to 8ms. 1759 * Must be done before enabling beacon generation. 1760 */ 1761 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1762 } 1763 1764 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1765 1766 /* set beacon interval (in 1/16ms unit) */ 1767 tmp |= ic->ic_bss->ni_intval * 16; 1768 1769 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1770 if (ic->ic_opmode == IEEE80211_M_STA) 1771 tmp |= RT2573_TSF_MODE(1); 1772 else 1773 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1774 1775 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1776 } 1777 1778 static void 1779 rum_update_slot(struct rum_softc *sc) 1780 { 1781 struct ieee80211com *ic = &sc->sc_ic; 1782 uint8_t slottime; 1783 uint32_t tmp; 1784 1785 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1786 1787 tmp = rum_read(sc, RT2573_MAC_CSR9); 1788 tmp = (tmp & ~0xff) | slottime; 1789 rum_write(sc, RT2573_MAC_CSR9, tmp); 1790 1791 DPRINTF(("setting slot time to %uus\n", slottime)); 1792 } 1793 1794 static void 1795 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1796 { 1797 uint32_t tmp; 1798 1799 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1800 rum_write(sc, RT2573_MAC_CSR4, tmp); 1801 1802 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1803 rum_write(sc, RT2573_MAC_CSR5, tmp); 1804 } 1805 1806 static void 1807 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1808 { 1809 uint32_t tmp; 1810 1811 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1812 rum_write(sc, RT2573_MAC_CSR2, tmp); 1813 1814 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1815 rum_write(sc, RT2573_MAC_CSR3, tmp); 1816 } 1817 1818 static void 1819 rum_update_promisc(struct rum_softc *sc) 1820 { 1821 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1822 uint32_t tmp; 1823 1824 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1825 1826 tmp &= ~RT2573_DROP_NOT_TO_ME; 1827 if (!(ifp->if_flags & IFF_PROMISC)) 1828 tmp |= RT2573_DROP_NOT_TO_ME; 1829 1830 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1831 1832 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1833 "entering" : "leaving")); 1834 } 1835 1836 static const char * 1837 rum_get_rf(int rev) 1838 { 1839 switch (rev) { 1840 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1841 case RT2573_RF_2528: return "RT2528"; 1842 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1843 case RT2573_RF_5226: return "RT5226"; 1844 default: return "unknown"; 1845 } 1846 } 1847 1848 static void 1849 rum_read_eeprom(struct rum_softc *sc) 1850 { 1851 struct ieee80211com *ic = &sc->sc_ic; 1852 uint16_t val; 1853 #ifdef RUM_DEBUG 1854 int i; 1855 #endif 1856 1857 /* read MAC/BBP type */ 1858 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1859 sc->macbbp_rev = le16toh(val); 1860 1861 /* read MAC address */ 1862 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1863 1864 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1865 val = le16toh(val); 1866 sc->rf_rev = (val >> 11) & 0x1f; 1867 sc->hw_radio = (val >> 10) & 0x1; 1868 sc->rx_ant = (val >> 4) & 0x3; 1869 sc->tx_ant = (val >> 2) & 0x3; 1870 sc->nb_ant = val & 0x3; 1871 1872 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1873 1874 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1875 val = le16toh(val); 1876 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1877 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1878 1879 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1880 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1881 1882 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1883 val = le16toh(val); 1884 if ((val & 0xff) != 0xff) 1885 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1886 1887 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1888 val = le16toh(val); 1889 if ((val & 0xff) != 0xff) 1890 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1891 1892 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1893 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1894 1895 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1896 val = le16toh(val); 1897 if ((val & 0xff) != 0xff) 1898 sc->rffreq = val & 0xff; 1899 1900 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1901 1902 /* read Tx power for all a/b/g channels */ 1903 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1904 /* XXX default Tx power for 802.11a channels */ 1905 memset(sc->txpow + 14, 24, sizeof(sc->txpow) - 14); 1906 #ifdef RUM_DEBUG 1907 for (i = 0; i < 14; i++) 1908 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1909 #endif 1910 1911 /* read default values for BBP registers */ 1912 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1913 #ifdef RUM_DEBUG 1914 for (i = 0; i < 14; i++) { 1915 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1916 continue; 1917 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1918 sc->bbp_prom[i].val)); 1919 } 1920 #endif 1921 } 1922 1923 static int 1924 rum_bbp_init(struct rum_softc *sc) 1925 { 1926 unsigned int i, ntries; 1927 uint8_t val; 1928 1929 /* wait for BBP to be ready */ 1930 for (ntries = 0; ntries < 100; ntries++) { 1931 val = rum_bbp_read(sc, 0); 1932 if (val != 0 && val != 0xff) 1933 break; 1934 DELAY(1000); 1935 } 1936 if (ntries == 100) { 1937 printf("%s: timeout waiting for BBP\n", 1938 device_xname(sc->sc_dev)); 1939 return EIO; 1940 } 1941 1942 /* initialize BBP registers to default values */ 1943 for (i = 0; i < __arraycount(rum_def_bbp); i++) 1944 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1945 1946 /* write vendor-specific BBP values (from EEPROM) */ 1947 for (i = 0; i < 16; i++) { 1948 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1949 continue; 1950 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1951 } 1952 1953 return 0; 1954 } 1955 1956 static int 1957 rum_init(struct ifnet *ifp) 1958 { 1959 struct rum_softc *sc = ifp->if_softc; 1960 struct ieee80211com *ic = &sc->sc_ic; 1961 uint32_t tmp; 1962 usbd_status error = 0; 1963 unsigned int i, ntries; 1964 1965 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1966 if (rum_attachhook(sc)) 1967 goto fail; 1968 } 1969 1970 rum_stop(ifp, 0); 1971 1972 /* initialize MAC registers to default values */ 1973 for (i = 0; i < __arraycount(rum_def_mac); i++) 1974 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1975 1976 /* set host ready */ 1977 rum_write(sc, RT2573_MAC_CSR1, 3); 1978 rum_write(sc, RT2573_MAC_CSR1, 0); 1979 1980 /* wait for BBP/RF to wakeup */ 1981 for (ntries = 0; ntries < 1000; ntries++) { 1982 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1983 break; 1984 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1985 DELAY(1000); 1986 } 1987 if (ntries == 1000) { 1988 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1989 device_xname(sc->sc_dev)); 1990 goto fail; 1991 } 1992 1993 if ((error = rum_bbp_init(sc)) != 0) 1994 goto fail; 1995 1996 /* select default channel */ 1997 rum_select_band(sc, ic->ic_curchan); 1998 rum_select_antenna(sc); 1999 rum_set_chan(sc, ic->ic_curchan); 2000 2001 /* clear STA registers */ 2002 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); 2003 2004 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2005 rum_set_macaddr(sc, ic->ic_myaddr); 2006 2007 /* initialize ASIC */ 2008 rum_write(sc, RT2573_MAC_CSR1, 4); 2009 2010 /* 2011 * Allocate xfer for AMRR statistics requests. 2012 */ 2013 struct usbd_pipe *pipe0 = usbd_get_pipe0(sc->sc_udev); 2014 error = usbd_create_xfer(pipe0, sizeof(sc->sta), 0, 0, 2015 &sc->amrr_xfer); 2016 if (error) { 2017 printf("%s: could not allocate AMRR xfer\n", 2018 device_xname(sc->sc_dev)); 2019 goto fail; 2020 } 2021 2022 /* 2023 * Open Tx and Rx USB bulk pipes. 2024 */ 2025 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2026 &sc->sc_tx_pipeh); 2027 if (error != 0) { 2028 printf("%s: could not open Tx pipe: %s\n", 2029 device_xname(sc->sc_dev), usbd_errstr(error)); 2030 goto fail; 2031 } 2032 2033 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2034 &sc->sc_rx_pipeh); 2035 if (error != 0) { 2036 printf("%s: could not open Rx pipe: %s\n", 2037 device_xname(sc->sc_dev), usbd_errstr(error)); 2038 goto fail; 2039 } 2040 2041 /* 2042 * Allocate Tx and Rx xfer queues. 2043 */ 2044 error = rum_alloc_tx_list(sc); 2045 if (error != 0) { 2046 printf("%s: could not allocate Tx list\n", 2047 device_xname(sc->sc_dev)); 2048 goto fail; 2049 } 2050 2051 error = rum_alloc_rx_list(sc); 2052 if (error != 0) { 2053 printf("%s: could not allocate Rx list\n", 2054 device_xname(sc->sc_dev)); 2055 goto fail; 2056 } 2057 2058 /* 2059 * Start up the receive pipe. 2060 */ 2061 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2062 struct rum_rx_data *data; 2063 2064 data = &sc->rx_data[i]; 2065 2066 usbd_setup_xfer(data->xfer, data, data->buf, MCLBYTES, 2067 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2068 error = usbd_transfer(data->xfer); 2069 if (error != USBD_NORMAL_COMPLETION && 2070 error != USBD_IN_PROGRESS) { 2071 printf("%s: could not queue Rx transfer\n", 2072 device_xname(sc->sc_dev)); 2073 goto fail; 2074 } 2075 } 2076 2077 /* update Rx filter */ 2078 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2079 2080 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2081 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2082 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2083 RT2573_DROP_ACKCTS; 2084 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2085 tmp |= RT2573_DROP_TODS; 2086 if (!(ifp->if_flags & IFF_PROMISC)) 2087 tmp |= RT2573_DROP_NOT_TO_ME; 2088 } 2089 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2090 2091 ifp->if_flags &= ~IFF_OACTIVE; 2092 ifp->if_flags |= IFF_RUNNING; 2093 2094 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2095 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2096 else 2097 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2098 2099 return 0; 2100 2101 fail: rum_stop(ifp, 1); 2102 return error; 2103 } 2104 2105 static void 2106 rum_stop(struct ifnet *ifp, int disable) 2107 { 2108 struct rum_softc *sc = ifp->if_softc; 2109 struct ieee80211com *ic = &sc->sc_ic; 2110 uint32_t tmp; 2111 2112 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2113 2114 sc->sc_tx_timer = 0; 2115 ifp->if_timer = 0; 2116 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2117 2118 /* disable Rx */ 2119 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2120 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2121 2122 /* reset ASIC */ 2123 rum_write(sc, RT2573_MAC_CSR1, 3); 2124 rum_write(sc, RT2573_MAC_CSR1, 0); 2125 2126 if (sc->amrr_xfer != NULL) { 2127 usbd_destroy_xfer(sc->amrr_xfer); 2128 sc->amrr_xfer = NULL; 2129 } 2130 2131 if (sc->sc_rx_pipeh != NULL) { 2132 usbd_abort_pipe(sc->sc_rx_pipeh); 2133 } 2134 2135 if (sc->sc_tx_pipeh != NULL) { 2136 usbd_abort_pipe(sc->sc_tx_pipeh); 2137 } 2138 2139 rum_free_rx_list(sc); 2140 rum_free_tx_list(sc); 2141 2142 if (sc->sc_rx_pipeh != NULL) { 2143 usbd_close_pipe(sc->sc_rx_pipeh); 2144 sc->sc_rx_pipeh = NULL; 2145 } 2146 2147 if (sc->sc_tx_pipeh != NULL) { 2148 usbd_close_pipe(sc->sc_tx_pipeh); 2149 sc->sc_tx_pipeh = NULL; 2150 } 2151 } 2152 2153 static int 2154 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2155 { 2156 usb_device_request_t req; 2157 uint16_t reg = RT2573_MCU_CODE_BASE; 2158 usbd_status error; 2159 2160 /* copy firmware image into NIC */ 2161 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2162 rum_write(sc, reg, UGETDW(ucode)); 2163 2164 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2165 req.bRequest = RT2573_MCU_CNTL; 2166 USETW(req.wValue, RT2573_MCU_RUN); 2167 USETW(req.wIndex, 0); 2168 USETW(req.wLength, 0); 2169 2170 error = usbd_do_request(sc->sc_udev, &req, NULL); 2171 if (error != 0) { 2172 printf("%s: could not run firmware: %s\n", 2173 device_xname(sc->sc_dev), usbd_errstr(error)); 2174 } 2175 return error; 2176 } 2177 2178 static int 2179 rum_prepare_beacon(struct rum_softc *sc) 2180 { 2181 struct ieee80211com *ic = &sc->sc_ic; 2182 struct rum_tx_desc desc; 2183 struct mbuf *m0; 2184 int rate; 2185 2186 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2187 if (m0 == NULL) { 2188 aprint_error_dev(sc->sc_dev, 2189 "could not allocate beacon frame\n"); 2190 return ENOBUFS; 2191 } 2192 2193 /* send beacons at the lowest available rate */ 2194 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2195 2196 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2197 m0->m_pkthdr.len, rate); 2198 2199 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2200 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2201 2202 /* copy beacon header and payload into NIC memory */ 2203 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2204 m0->m_pkthdr.len); 2205 2206 m_freem(m0); 2207 2208 return 0; 2209 } 2210 2211 static void 2212 rum_newassoc(struct ieee80211_node *ni, int isnew) 2213 { 2214 /* start with lowest Tx rate */ 2215 ni->ni_txrate = 0; 2216 } 2217 2218 static void 2219 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2220 { 2221 int i; 2222 2223 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2224 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); 2225 2226 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2227 2228 /* set rate to some reasonable initial value */ 2229 for (i = ni->ni_rates.rs_nrates - 1; 2230 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2231 i--); 2232 ni->ni_txrate = i; 2233 2234 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2235 } 2236 2237 static void 2238 rum_amrr_timeout(void *arg) 2239 { 2240 struct rum_softc *sc = arg; 2241 usb_device_request_t req; 2242 2243 /* 2244 * Asynchronously read statistic registers (cleared by read). 2245 */ 2246 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2247 req.bRequest = RT2573_READ_MULTI_MAC; 2248 USETW(req.wValue, 0); 2249 USETW(req.wIndex, RT2573_STA_CSR0); 2250 USETW(req.wLength, sizeof(sc->sta)); 2251 2252 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2253 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof(sc->sta), 0, 2254 rum_amrr_update); 2255 (void)usbd_transfer(sc->amrr_xfer); 2256 } 2257 2258 static void 2259 rum_amrr_update(struct usbd_xfer *xfer, void *priv, 2260 usbd_status status) 2261 { 2262 struct rum_softc *sc = (struct rum_softc *)priv; 2263 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2264 2265 if (status != USBD_NORMAL_COMPLETION) { 2266 printf("%s: could not retrieve Tx statistics - cancelling " 2267 "automatic rate control\n", device_xname(sc->sc_dev)); 2268 return; 2269 } 2270 2271 /* count TX retry-fail as Tx errors */ 2272 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2273 2274 sc->amn.amn_retrycnt = 2275 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2276 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2277 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2278 2279 sc->amn.amn_txcnt = 2280 sc->amn.amn_retrycnt + 2281 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2282 2283 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2284 2285 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2286 } 2287 2288 static int 2289 rum_activate(device_t self, enum devact act) 2290 { 2291 switch (act) { 2292 case DVACT_DEACTIVATE: 2293 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2294 return 0; 2295 default: 2296 return 0; 2297 } 2298 } 2299 2300 MODULE(MODULE_CLASS_DRIVER, if_rum, "bpf"); 2301 2302 #ifdef _MODULE 2303 #include "ioconf.c" 2304 #endif 2305 2306 static int 2307 if_rum_modcmd(modcmd_t cmd, void *aux) 2308 { 2309 int error = 0; 2310 2311 switch (cmd) { 2312 case MODULE_CMD_INIT: 2313 #ifdef _MODULE 2314 error = config_init_component(cfdriver_ioconf_rum, 2315 cfattach_ioconf_rum, cfdata_ioconf_rum); 2316 #endif 2317 return error; 2318 case MODULE_CMD_FINI: 2319 #ifdef _MODULE 2320 error = config_fini_component(cfdriver_ioconf_rum, 2321 cfattach_ioconf_rum, cfdata_ioconf_rum); 2322 #endif 2323 return error; 2324 default: 2325 return ENOTTY; 2326 } 2327 } 2328
Indexes created Thu Oct 02 01:09:59 GMT 2025