if_rum.c revision 1.58.2.2
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.58.2.2 2018/08/08 10:28:35 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 1.58.2.2 2018/08/08 10:28:35 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_SYNET, USB_PRODUCT_SYNET_MWP54SS }, 142 { USB_VENDOR_ZYXEL, USB_PRODUCT_ZYXEL_RT2573 } 143 }; 144 145 static int rum_attachhook(void *); 146 static int rum_alloc_tx_list(struct rum_softc *); 147 static void rum_free_tx_list(struct rum_softc *); 148 static int rum_alloc_rx_list(struct rum_softc *); 149 static void rum_free_rx_list(struct rum_softc *); 150 static int rum_media_change(struct ifnet *); 151 static void rum_next_scan(void *); 152 static void rum_task(void *); 153 static int rum_newstate(struct ieee80211com *, 154 enum ieee80211_state, int); 155 static void rum_txeof(struct usbd_xfer *, void *, 156 usbd_status); 157 static void rum_rxeof(struct usbd_xfer *, void *, 158 usbd_status); 159 static uint8_t rum_rxrate(const struct rum_rx_desc *); 160 static int rum_ack_rate(struct ieee80211com *, int); 161 static uint16_t rum_txtime(int, int, uint32_t); 162 static uint8_t rum_plcp_signal(int); 163 static void rum_setup_tx_desc(struct rum_softc *, 164 struct rum_tx_desc *, uint32_t, uint16_t, int, 165 int); 166 static int rum_tx_data(struct rum_softc *, struct mbuf *, 167 struct ieee80211_node *); 168 static void rum_start(struct ifnet *); 169 static void rum_watchdog(struct ifnet *); 170 static int rum_ioctl(struct ifnet *, u_long, void *); 171 static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 172 int); 173 static uint32_t rum_read(struct rum_softc *, uint16_t); 174 static void rum_read_multi(struct rum_softc *, uint16_t, void *, 175 int); 176 static void rum_write(struct rum_softc *, uint16_t, uint32_t); 177 static void rum_write_multi(struct rum_softc *, uint16_t, void *, 178 size_t); 179 static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 180 static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 181 static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 182 static void rum_select_antenna(struct rum_softc *); 183 static void rum_enable_mrr(struct rum_softc *); 184 static void rum_set_txpreamble(struct rum_softc *); 185 static void rum_set_basicrates(struct rum_softc *); 186 static void rum_select_band(struct rum_softc *, 187 struct ieee80211_channel *); 188 static void rum_set_chan(struct rum_softc *, 189 struct ieee80211_channel *); 190 static void rum_enable_tsf_sync(struct rum_softc *); 191 static void rum_update_slot(struct rum_softc *); 192 static void rum_set_bssid(struct rum_softc *, const uint8_t *); 193 static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 194 static void rum_update_promisc(struct rum_softc *); 195 static const char *rum_get_rf(int); 196 static void rum_read_eeprom(struct rum_softc *); 197 static int rum_bbp_init(struct rum_softc *); 198 static int rum_init(struct ifnet *); 199 static void rum_stop(struct ifnet *, int); 200 static int rum_load_microcode(struct rum_softc *, const u_char *, 201 size_t); 202 static int rum_prepare_beacon(struct rum_softc *); 203 static void rum_newassoc(struct ieee80211_node *, int); 204 static void rum_amrr_start(struct rum_softc *, 205 struct ieee80211_node *); 206 static void rum_amrr_timeout(void *); 207 static void rum_amrr_update(struct usbd_xfer *, void *, 208 usbd_status); 209 210 /* 211 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 212 */ 213 static const struct ieee80211_rateset rum_rateset_11a = 214 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 215 216 static const struct ieee80211_rateset rum_rateset_11b = 217 { 4, { 2, 4, 11, 22 } }; 218 219 static const struct ieee80211_rateset rum_rateset_11g = 220 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 221 222 static const struct { 223 uint32_t reg; 224 uint32_t val; 225 } rum_def_mac[] = { 226 RT2573_DEF_MAC 227 }; 228 229 static const struct { 230 uint8_t reg; 231 uint8_t val; 232 } rum_def_bbp[] = { 233 RT2573_DEF_BBP 234 }; 235 236 static const struct rfprog { 237 uint8_t chan; 238 uint32_t r1, r2, r3, r4; 239 } rum_rf5226[] = { 240 RT2573_RF5226 241 }, rum_rf5225[] = { 242 RT2573_RF5225 243 }; 244 245 static int rum_match(device_t, cfdata_t, void *); 246 static void rum_attach(device_t, device_t, void *); 247 static int rum_detach(device_t, int); 248 static int rum_activate(device_t, enum devact); 249 extern struct cfdriver rum_cd; 250 CFATTACH_DECL_NEW(rum, sizeof(struct rum_softc), rum_match, rum_attach, 251 rum_detach, rum_activate); 252 253 static int 254 rum_match(device_t parent, cfdata_t match, void *aux) 255 { 256 struct usb_attach_arg *uaa = aux; 257 258 return (usb_lookup(rum_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? 259 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 260 } 261 262 static int 263 rum_attachhook(void *xsc) 264 { 265 struct rum_softc *sc = xsc; 266 firmware_handle_t fwh; 267 const char *name = "rum-rt2573"; 268 u_char *ucode; 269 size_t size; 270 int error; 271 272 if ((error = firmware_open("rum", name, &fwh)) != 0) { 273 printf("%s: failed firmware_open of file %s (error %d)\n", 274 device_xname(sc->sc_dev), name, error); 275 return error; 276 } 277 size = firmware_get_size(fwh); 278 ucode = firmware_malloc(size); 279 if (ucode == NULL) { 280 printf("%s: failed to allocate firmware memory\n", 281 device_xname(sc->sc_dev)); 282 firmware_close(fwh); 283 return ENOMEM; 284 } 285 error = firmware_read(fwh, 0, ucode, size); 286 firmware_close(fwh); 287 if (error != 0) { 288 printf("%s: failed to read firmware (error %d)\n", 289 device_xname(sc->sc_dev), error); 290 firmware_free(ucode, size); 291 return error; 292 } 293 294 if (rum_load_microcode(sc, ucode, size) != 0) { 295 printf("%s: could not load 8051 microcode\n", 296 device_xname(sc->sc_dev)); 297 firmware_free(ucode, size); 298 return ENXIO; 299 } 300 301 firmware_free(ucode, size); 302 sc->sc_flags |= RT2573_FWLOADED; 303 304 return 0; 305 } 306 307 static void 308 rum_attach(device_t parent, device_t self, void *aux) 309 { 310 struct rum_softc *sc = device_private(self); 311 struct usb_attach_arg *uaa = aux; 312 struct ieee80211com *ic = &sc->sc_ic; 313 struct ifnet *ifp = &sc->sc_if; 314 usb_interface_descriptor_t *id; 315 usb_endpoint_descriptor_t *ed; 316 usbd_status error; 317 char *devinfop; 318 int i, ntries; 319 uint32_t tmp; 320 321 sc->sc_dev = self; 322 sc->sc_udev = uaa->uaa_device; 323 sc->sc_flags = 0; 324 325 aprint_naive("\n"); 326 aprint_normal("\n"); 327 328 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 329 aprint_normal_dev(self, "%s\n", devinfop); 330 usbd_devinfo_free(devinfop); 331 332 error = usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0); 333 if (error != 0) { 334 aprint_error_dev(self, "failed to set configuration" 335 ", err=%s\n", usbd_errstr(error)); 336 return; 337 } 338 339 /* get the first interface handle */ 340 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 341 &sc->sc_iface); 342 if (error != 0) { 343 aprint_error_dev(self, "could not get interface handle\n"); 344 return; 345 } 346 347 /* 348 * Find endpoints. 349 */ 350 id = usbd_get_interface_descriptor(sc->sc_iface); 351 352 sc->sc_rx_no = sc->sc_tx_no = -1; 353 for (i = 0; i < id->bNumEndpoints; i++) { 354 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 355 if (ed == NULL) { 356 aprint_error_dev(self, 357 "no endpoint descriptor for iface %d\n", i); 358 return; 359 } 360 361 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 362 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 363 sc->sc_rx_no = ed->bEndpointAddress; 364 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 365 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 366 sc->sc_tx_no = ed->bEndpointAddress; 367 } 368 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 369 aprint_error_dev(self, "missing endpoint\n"); 370 return; 371 } 372 373 usb_init_task(&sc->sc_task, rum_task, sc, 0); 374 callout_init(&sc->sc_scan_ch, 0); 375 376 sc->amrr.amrr_min_success_threshold = 1; 377 sc->amrr.amrr_max_success_threshold = 10; 378 callout_init(&sc->sc_amrr_ch, 0); 379 380 /* retrieve RT2573 rev. no */ 381 for (ntries = 0; ntries < 1000; ntries++) { 382 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 383 break; 384 DELAY(1000); 385 } 386 if (ntries == 1000) { 387 aprint_error_dev(self, "timeout waiting for chip to settle\n"); 388 return; 389 } 390 391 /* retrieve MAC address and various other things from EEPROM */ 392 rum_read_eeprom(sc); 393 394 aprint_normal_dev(self, 395 "MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 396 sc->macbbp_rev, tmp, 397 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 398 399 ic->ic_ifp = ifp; 400 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 401 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 402 ic->ic_state = IEEE80211_S_INIT; 403 404 /* set device capabilities */ 405 ic->ic_caps = 406 IEEE80211_C_IBSS | /* IBSS mode supported */ 407 IEEE80211_C_MONITOR | /* monitor mode supported */ 408 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 409 IEEE80211_C_TXPMGT | /* tx power management */ 410 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 411 IEEE80211_C_SHSLOT | /* short slot time supported */ 412 IEEE80211_C_WPA; /* 802.11i */ 413 414 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 415 /* set supported .11a rates */ 416 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 417 418 /* set supported .11a channels */ 419 for (i = 34; i <= 46; 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 = 36; i <= 64; 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 = 100; i <= 140; 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 for (i = 149; i <= 165; i += 4) { 435 ic->ic_channels[i].ic_freq = 436 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 437 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 438 } 439 } 440 441 /* set supported .11b and .11g rates */ 442 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 443 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 444 445 /* set supported .11b and .11g channels (1 through 14) */ 446 for (i = 1; i <= 14; i++) { 447 ic->ic_channels[i].ic_freq = 448 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 449 ic->ic_channels[i].ic_flags = 450 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 451 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 452 } 453 454 ifp->if_softc = sc; 455 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 456 ifp->if_init = rum_init; 457 ifp->if_ioctl = rum_ioctl; 458 ifp->if_start = rum_start; 459 ifp->if_watchdog = rum_watchdog; 460 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 461 IFQ_SET_READY(&ifp->if_snd); 462 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 463 464 if_attach(ifp); 465 ieee80211_ifattach(ic); 466 ic->ic_newassoc = rum_newassoc; 467 468 /* override state transition machine */ 469 sc->sc_newstate = ic->ic_newstate; 470 ic->ic_newstate = rum_newstate; 471 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 472 473 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 474 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 475 &sc->sc_drvbpf); 476 477 sc->sc_rxtap_len = sizeof(sc->sc_rxtapu); 478 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 479 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 480 481 sc->sc_txtap_len = sizeof(sc->sc_txtapu); 482 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 483 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 484 485 ieee80211_announce(ic); 486 487 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 488 489 if (!pmf_device_register(self, NULL, NULL)) 490 aprint_error_dev(self, "couldn't establish power handler\n"); 491 492 return; 493 } 494 495 static int 496 rum_detach(device_t self, int flags) 497 { 498 struct rum_softc *sc = device_private(self); 499 struct ieee80211com *ic = &sc->sc_ic; 500 struct ifnet *ifp = &sc->sc_if; 501 int s; 502 503 if (!ifp->if_softc) 504 return 0; 505 506 pmf_device_deregister(self); 507 508 s = splusb(); 509 510 rum_stop(ifp, 1); 511 callout_halt(&sc->sc_scan_ch, NULL); 512 callout_halt(&sc->sc_amrr_ch, NULL); 513 usb_rem_task_wait(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER, NULL); 514 515 bpf_detach(ifp); 516 ieee80211_ifdetach(ic); /* free all nodes */ 517 if_detach(ifp); 518 519 splx(s); 520 521 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 522 523 return 0; 524 } 525 526 static int 527 rum_alloc_tx_list(struct rum_softc *sc) 528 { 529 struct rum_tx_data *data; 530 int i, error; 531 532 sc->tx_cur = sc->tx_queued = 0; 533 534 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 535 data = &sc->tx_data[i]; 536 537 data->sc = sc; 538 539 error = usbd_create_xfer(sc->sc_tx_pipeh, 540 RT2573_TX_DESC_SIZE + IEEE80211_MAX_LEN, 541 USBD_FORCE_SHORT_XFER, 0, &data->xfer); 542 if (error) { 543 printf("%s: could not allocate tx xfer\n", 544 device_xname(sc->sc_dev)); 545 goto fail; 546 } 547 data->buf = usbd_get_buffer(data->xfer); 548 549 /* clean Tx descriptor */ 550 memset(data->buf, 0, RT2573_TX_DESC_SIZE); 551 } 552 553 return 0; 554 555 fail: rum_free_tx_list(sc); 556 return error; 557 } 558 559 static void 560 rum_free_tx_list(struct rum_softc *sc) 561 { 562 struct rum_tx_data *data; 563 int i; 564 565 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 566 data = &sc->tx_data[i]; 567 568 if (data->xfer != NULL) { 569 usbd_destroy_xfer(data->xfer); 570 data->xfer = NULL; 571 } 572 573 if (data->ni != NULL) { 574 ieee80211_free_node(data->ni); 575 data->ni = NULL; 576 } 577 } 578 } 579 580 static int 581 rum_alloc_rx_list(struct rum_softc *sc) 582 { 583 struct rum_rx_data *data; 584 int i, error; 585 586 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 587 data = &sc->rx_data[i]; 588 589 data->sc = sc; 590 591 error = usbd_create_xfer(sc->sc_rx_pipeh, MCLBYTES, 592 0, 0, &data->xfer); 593 if (error) { 594 printf("%s: could not allocate rx xfer\n", 595 device_xname(sc->sc_dev)); 596 goto fail; 597 } 598 599 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 600 if (data->m == NULL) { 601 printf("%s: could not allocate rx mbuf\n", 602 device_xname(sc->sc_dev)); 603 error = ENOMEM; 604 goto fail; 605 } 606 607 MCLGET(data->m, M_DONTWAIT); 608 if (!(data->m->m_flags & M_EXT)) { 609 printf("%s: could not allocate rx mbuf cluster\n", 610 device_xname(sc->sc_dev)); 611 error = ENOMEM; 612 goto fail; 613 } 614 615 data->buf = mtod(data->m, uint8_t *); 616 } 617 618 return 0; 619 620 fail: rum_free_rx_list(sc); 621 return error; 622 } 623 624 static void 625 rum_free_rx_list(struct rum_softc *sc) 626 { 627 struct rum_rx_data *data; 628 int i; 629 630 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 631 data = &sc->rx_data[i]; 632 633 if (data->xfer != NULL) { 634 usbd_destroy_xfer(data->xfer); 635 data->xfer = NULL; 636 } 637 638 if (data->m != NULL) { 639 m_freem(data->m); 640 data->m = NULL; 641 } 642 } 643 } 644 645 static int 646 rum_media_change(struct ifnet *ifp) 647 { 648 int error; 649 650 error = ieee80211_media_change(ifp); 651 if (error != ENETRESET) 652 return error; 653 654 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 655 rum_init(ifp); 656 657 return 0; 658 } 659 660 /* 661 * This function is called periodically (every 200ms) during scanning to 662 * switch from one channel to another. 663 */ 664 static void 665 rum_next_scan(void *arg) 666 { 667 struct rum_softc *sc = arg; 668 struct ieee80211com *ic = &sc->sc_ic; 669 int s; 670 671 s = splnet(); 672 if (ic->ic_state == IEEE80211_S_SCAN) 673 ieee80211_next_scan(ic); 674 splx(s); 675 } 676 677 static void 678 rum_task(void *arg) 679 { 680 struct rum_softc *sc = arg; 681 struct ieee80211com *ic = &sc->sc_ic; 682 enum ieee80211_state ostate; 683 struct ieee80211_node *ni; 684 uint32_t tmp; 685 686 ostate = ic->ic_state; 687 688 switch (sc->sc_state) { 689 case IEEE80211_S_INIT: 690 if (ostate == IEEE80211_S_RUN) { 691 /* abort TSF synchronization */ 692 tmp = rum_read(sc, RT2573_TXRX_CSR9); 693 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 694 } 695 break; 696 697 case IEEE80211_S_SCAN: 698 rum_set_chan(sc, ic->ic_curchan); 699 callout_reset(&sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 700 break; 701 702 case IEEE80211_S_AUTH: 703 rum_set_chan(sc, ic->ic_curchan); 704 break; 705 706 case IEEE80211_S_ASSOC: 707 rum_set_chan(sc, ic->ic_curchan); 708 break; 709 710 case IEEE80211_S_RUN: 711 rum_set_chan(sc, ic->ic_curchan); 712 713 ni = ic->ic_bss; 714 715 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 716 rum_update_slot(sc); 717 rum_enable_mrr(sc); 718 rum_set_txpreamble(sc); 719 rum_set_basicrates(sc); 720 rum_set_bssid(sc, ni->ni_bssid); 721 } 722 723 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 724 ic->ic_opmode == IEEE80211_M_IBSS) 725 rum_prepare_beacon(sc); 726 727 if (ic->ic_opmode != IEEE80211_M_MONITOR) 728 rum_enable_tsf_sync(sc); 729 730 if (ic->ic_opmode == IEEE80211_M_STA) { 731 /* fake a join to init the tx rate */ 732 rum_newassoc(ic->ic_bss, 1); 733 734 /* enable automatic rate adaptation in STA mode */ 735 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 736 rum_amrr_start(sc, ni); 737 } 738 739 break; 740 } 741 742 sc->sc_newstate(ic, sc->sc_state, sc->sc_arg); 743 } 744 745 static int 746 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 747 { 748 struct rum_softc *sc = ic->ic_ifp->if_softc; 749 750 /* 751 * XXXSMP: This does not wait for the task, if it is in flight, 752 * to complete. If this code works at all, it must rely on the 753 * kernel lock to serialize with the USB task thread. 754 */ 755 usb_rem_task(sc->sc_udev, &sc->sc_task); 756 callout_stop(&sc->sc_scan_ch); 757 callout_stop(&sc->sc_amrr_ch); 758 759 /* do it in a process context */ 760 sc->sc_state = nstate; 761 sc->sc_arg = arg; 762 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 763 764 return 0; 765 } 766 767 /* quickly determine if a given rate is CCK or OFDM */ 768 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 769 770 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 771 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 772 773 static void 774 rum_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 775 { 776 struct rum_tx_data *data = priv; 777 struct rum_softc *sc = data->sc; 778 struct ifnet *ifp = &sc->sc_if; 779 int s; 780 781 if (status != USBD_NORMAL_COMPLETION) { 782 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 783 return; 784 785 printf("%s: could not transmit buffer: %s\n", 786 device_xname(sc->sc_dev), usbd_errstr(status)); 787 788 if (status == USBD_STALLED) 789 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 790 791 ifp->if_oerrors++; 792 return; 793 } 794 795 s = splnet(); 796 797 ieee80211_free_node(data->ni); 798 data->ni = NULL; 799 800 sc->tx_queued--; 801 ifp->if_opackets++; 802 803 DPRINTFN(10, ("tx done\n")); 804 805 sc->sc_tx_timer = 0; 806 ifp->if_flags &= ~IFF_OACTIVE; 807 rum_start(ifp); 808 809 splx(s); 810 } 811 812 static void 813 rum_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 814 { 815 struct rum_rx_data *data = priv; 816 struct rum_softc *sc = data->sc; 817 struct ieee80211com *ic = &sc->sc_ic; 818 struct ifnet *ifp = &sc->sc_if; 819 struct rum_rx_desc *desc; 820 struct ieee80211_frame *wh; 821 struct ieee80211_node *ni; 822 struct mbuf *mnew, *m; 823 int s, len; 824 825 if (status != USBD_NORMAL_COMPLETION) { 826 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 827 return; 828 829 if (status == USBD_STALLED) 830 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 831 goto skip; 832 } 833 834 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 835 836 if (len < (int)(RT2573_RX_DESC_SIZE + 837 sizeof(struct ieee80211_frame_min))) { 838 DPRINTF(("%s: xfer too short %d\n", device_xname(sc->sc_dev), 839 len)); 840 ifp->if_ierrors++; 841 goto skip; 842 } 843 844 desc = (struct rum_rx_desc *)data->buf; 845 846 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 847 /* 848 * This should not happen since we did not request to receive 849 * those frames when we filled RT2573_TXRX_CSR0. 850 */ 851 DPRINTFN(5, ("CRC error\n")); 852 ifp->if_ierrors++; 853 goto skip; 854 } 855 856 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 857 if (mnew == NULL) { 858 printf("%s: could not allocate rx mbuf\n", 859 device_xname(sc->sc_dev)); 860 ifp->if_ierrors++; 861 goto skip; 862 } 863 864 MCLGET(mnew, M_DONTWAIT); 865 if (!(mnew->m_flags & M_EXT)) { 866 printf("%s: could not allocate rx mbuf cluster\n", 867 device_xname(sc->sc_dev)); 868 m_freem(mnew); 869 ifp->if_ierrors++; 870 goto skip; 871 } 872 873 m = data->m; 874 data->m = mnew; 875 data->buf = mtod(data->m, uint8_t *); 876 877 /* finalize mbuf */ 878 m_set_rcvif(m, ifp); 879 m->m_data = (void *)(desc + 1); 880 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 881 882 s = splnet(); 883 884 if (sc->sc_drvbpf != NULL) { 885 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 886 887 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 888 tap->wr_rate = rum_rxrate(desc); 889 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 890 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 891 tap->wr_antenna = sc->rx_ant; 892 tap->wr_antsignal = desc->rssi; 893 894 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 895 } 896 897 wh = mtod(m, struct ieee80211_frame *); 898 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 899 900 /* send the frame to the 802.11 layer */ 901 ieee80211_input(ic, m, ni, desc->rssi, 0); 902 903 /* node is no longer needed */ 904 ieee80211_free_node(ni); 905 906 splx(s); 907 908 DPRINTFN(15, ("rx done\n")); 909 910 skip: /* setup a new transfer */ 911 usbd_setup_xfer(xfer, data, data->buf, MCLBYTES, USBD_SHORT_XFER_OK, 912 USBD_NO_TIMEOUT, rum_rxeof); 913 usbd_transfer(xfer); 914 } 915 916 /* 917 * This function is only used by the Rx radiotap code. It returns the rate at 918 * which a given frame was received. 919 */ 920 static uint8_t 921 rum_rxrate(const struct rum_rx_desc *desc) 922 { 923 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 924 /* reverse function of rum_plcp_signal */ 925 switch (desc->rate) { 926 case 0xb: return 12; 927 case 0xf: return 18; 928 case 0xa: return 24; 929 case 0xe: return 36; 930 case 0x9: return 48; 931 case 0xd: return 72; 932 case 0x8: return 96; 933 case 0xc: return 108; 934 } 935 } else { 936 if (desc->rate == 10) 937 return 2; 938 if (desc->rate == 20) 939 return 4; 940 if (desc->rate == 55) 941 return 11; 942 if (desc->rate == 110) 943 return 22; 944 } 945 return 2; /* should not get there */ 946 } 947 948 /* 949 * Return the expected ack rate for a frame transmitted at rate `rate'. 950 * XXX: this should depend on the destination node basic rate set. 951 */ 952 static int 953 rum_ack_rate(struct ieee80211com *ic, int rate) 954 { 955 switch (rate) { 956 /* CCK rates */ 957 case 2: 958 return 2; 959 case 4: 960 case 11: 961 case 22: 962 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 963 964 /* OFDM rates */ 965 case 12: 966 case 18: 967 return 12; 968 case 24: 969 case 36: 970 return 24; 971 case 48: 972 case 72: 973 case 96: 974 case 108: 975 return 48; 976 } 977 978 /* default to 1Mbps */ 979 return 2; 980 } 981 982 /* 983 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 984 * The function automatically determines the operating mode depending on the 985 * given rate. `flags' indicates whether short preamble is in use or not. 986 */ 987 static uint16_t 988 rum_txtime(int len, int rate, uint32_t flags) 989 { 990 uint16_t txtime; 991 992 if (RUM_RATE_IS_OFDM(rate)) { 993 /* IEEE Std 802.11a-1999, pp. 37 */ 994 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 995 txtime = 16 + 4 + 4 * txtime + 6; 996 } else { 997 /* IEEE Std 802.11b-1999, pp. 28 */ 998 txtime = (16 * len + rate - 1) / rate; 999 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1000 txtime += 72 + 24; 1001 else 1002 txtime += 144 + 48; 1003 } 1004 return txtime; 1005 } 1006 1007 static uint8_t 1008 rum_plcp_signal(int rate) 1009 { 1010 switch (rate) { 1011 /* CCK rates (returned values are device-dependent) */ 1012 case 2: return 0x0; 1013 case 4: return 0x1; 1014 case 11: return 0x2; 1015 case 22: return 0x3; 1016 1017 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1018 case 12: return 0xb; 1019 case 18: return 0xf; 1020 case 24: return 0xa; 1021 case 36: return 0xe; 1022 case 48: return 0x9; 1023 case 72: return 0xd; 1024 case 96: return 0x8; 1025 case 108: return 0xc; 1026 1027 /* unsupported rates (should not get there) */ 1028 default: return 0xff; 1029 } 1030 } 1031 1032 static void 1033 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1034 uint32_t flags, uint16_t xflags, int len, int rate) 1035 { 1036 struct ieee80211com *ic = &sc->sc_ic; 1037 uint16_t plcp_length; 1038 int remainder; 1039 1040 desc->flags = htole32(flags); 1041 desc->flags |= htole32(RT2573_TX_VALID); 1042 desc->flags |= htole32(len << 16); 1043 1044 desc->xflags = htole16(xflags); 1045 1046 desc->wme = htole16( 1047 RT2573_QID(0) | 1048 RT2573_AIFSN(2) | 1049 RT2573_LOGCWMIN(4) | 1050 RT2573_LOGCWMAX(10)); 1051 1052 /* setup PLCP fields */ 1053 desc->plcp_signal = rum_plcp_signal(rate); 1054 desc->plcp_service = 4; 1055 1056 len += IEEE80211_CRC_LEN; 1057 if (RUM_RATE_IS_OFDM(rate)) { 1058 desc->flags |= htole32(RT2573_TX_OFDM); 1059 1060 plcp_length = len & 0xfff; 1061 desc->plcp_length_hi = plcp_length >> 6; 1062 desc->plcp_length_lo = plcp_length & 0x3f; 1063 } else { 1064 plcp_length = (16 * len + rate - 1) / rate; 1065 if (rate == 22) { 1066 remainder = (16 * len) % 22; 1067 if (remainder != 0 && remainder < 7) 1068 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1069 } 1070 desc->plcp_length_hi = plcp_length >> 8; 1071 desc->plcp_length_lo = plcp_length & 0xff; 1072 1073 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1074 desc->plcp_signal |= 0x08; 1075 } 1076 } 1077 1078 #define RUM_TX_TIMEOUT 5000 1079 1080 static int 1081 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1082 { 1083 struct ieee80211com *ic = &sc->sc_ic; 1084 struct rum_tx_desc *desc; 1085 struct rum_tx_data *data; 1086 struct ieee80211_frame *wh; 1087 struct ieee80211_key *k; 1088 uint32_t flags = 0; 1089 uint16_t dur; 1090 usbd_status error; 1091 int rate, xferlen, pktlen, needrts = 0, needcts = 0; 1092 1093 wh = mtod(m0, struct ieee80211_frame *); 1094 1095 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1096 k = ieee80211_crypto_encap(ic, ni, m0); 1097 if (k == NULL) { 1098 m_freem(m0); 1099 return ENOBUFS; 1100 } 1101 1102 /* packet header may have moved, reset our local pointer */ 1103 wh = mtod(m0, struct ieee80211_frame *); 1104 } 1105 1106 /* compute actual packet length (including CRC and crypto overhead) */ 1107 pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN; 1108 1109 /* pickup a rate */ 1110 if (IEEE80211_IS_MULTICAST(wh->i_addr1) || 1111 ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1112 IEEE80211_FC0_TYPE_MGT)) { 1113 /* mgmt/multicast frames are sent at the lowest avail. rate */ 1114 rate = ni->ni_rates.rs_rates[0]; 1115 } else if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) { 1116 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1117 } else 1118 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1119 if (rate == 0) 1120 rate = 2; /* XXX should not happen */ 1121 rate &= IEEE80211_RATE_VAL; 1122 1123 /* check if RTS/CTS or CTS-to-self protection must be used */ 1124 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1125 /* multicast frames are not sent at OFDM rates in 802.11b/g */ 1126 if (pktlen > ic->ic_rtsthreshold) { 1127 needrts = 1; /* RTS/CTS based on frame length */ 1128 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1129 RUM_RATE_IS_OFDM(rate)) { 1130 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 1131 needcts = 1; /* CTS-to-self */ 1132 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 1133 needrts = 1; /* RTS/CTS */ 1134 } 1135 } 1136 if (needrts || needcts) { 1137 struct mbuf *mprot; 1138 int protrate, ackrate; 1139 1140 protrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1141 ackrate = rum_ack_rate(ic, rate); 1142 1143 dur = rum_txtime(pktlen, rate, ic->ic_flags) + 1144 rum_txtime(RUM_ACK_SIZE, ackrate, ic->ic_flags) + 1145 2 * sc->sifs; 1146 if (needrts) { 1147 dur += rum_txtime(RUM_CTS_SIZE, rum_ack_rate(ic, 1148 protrate), ic->ic_flags) + sc->sifs; 1149 mprot = ieee80211_get_rts(ic, wh, dur); 1150 } else { 1151 mprot = ieee80211_get_cts_to_self(ic, dur); 1152 } 1153 if (mprot == NULL) { 1154 aprint_error_dev(sc->sc_dev, 1155 "couldn't allocate protection frame\n"); 1156 m_freem(m0); 1157 return ENOBUFS; 1158 } 1159 1160 data = &sc->tx_data[sc->tx_cur]; 1161 desc = (struct rum_tx_desc *)data->buf; 1162 1163 /* avoid multiple free() of the same node for each fragment */ 1164 data->ni = ieee80211_ref_node(ni); 1165 1166 m_copydata(mprot, 0, mprot->m_pkthdr.len, 1167 data->buf + RT2573_TX_DESC_SIZE); 1168 rum_setup_tx_desc(sc, desc, 1169 (needrts ? RT2573_TX_NEED_ACK : 0) | RT2573_TX_MORE_FRAG, 1170 0, mprot->m_pkthdr.len, protrate); 1171 1172 /* no roundup necessary here */ 1173 xferlen = RT2573_TX_DESC_SIZE + mprot->m_pkthdr.len; 1174 1175 /* XXX may want to pass the protection frame to BPF */ 1176 1177 /* mbuf is no longer needed */ 1178 m_freem(mprot); 1179 1180 usbd_setup_xfer(data->xfer, data, data->buf, 1181 xferlen, USBD_FORCE_SHORT_XFER, 1182 RUM_TX_TIMEOUT, rum_txeof); 1183 error = usbd_transfer(data->xfer); 1184 if (error != USBD_NORMAL_COMPLETION && 1185 error != USBD_IN_PROGRESS) { 1186 m_freem(m0); 1187 return error; 1188 } 1189 1190 sc->tx_queued++; 1191 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1192 1193 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1194 } 1195 1196 data = &sc->tx_data[sc->tx_cur]; 1197 desc = (struct rum_tx_desc *)data->buf; 1198 1199 data->ni = ni; 1200 1201 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1202 flags |= RT2573_TX_NEED_ACK; 1203 1204 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1205 ic->ic_flags) + sc->sifs; 1206 *(uint16_t *)wh->i_dur = htole16(dur); 1207 1208 /* tell hardware to set timestamp in probe responses */ 1209 if ((wh->i_fc[0] & 1210 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1211 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1212 flags |= RT2573_TX_TIMESTAMP; 1213 } 1214 1215 if (sc->sc_drvbpf != NULL) { 1216 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1217 1218 tap->wt_flags = 0; 1219 tap->wt_rate = rate; 1220 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1221 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1222 tap->wt_antenna = sc->tx_ant; 1223 1224 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1225 } 1226 1227 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1228 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1229 1230 /* align end on a 4-bytes boundary */ 1231 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1232 1233 /* 1234 * No space left in the last URB to store the extra 4 bytes, force 1235 * sending of another URB. 1236 */ 1237 if ((xferlen % 64) == 0) 1238 xferlen += 4; 1239 1240 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1241 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1242 rate, xferlen)); 1243 1244 /* mbuf is no longer needed */ 1245 m_freem(m0); 1246 1247 usbd_setup_xfer(data->xfer, data, data->buf, xferlen, 1248 USBD_FORCE_SHORT_XFER, RUM_TX_TIMEOUT, rum_txeof); 1249 error = usbd_transfer(data->xfer); 1250 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1251 return error; 1252 1253 sc->tx_queued++; 1254 sc->tx_cur = (sc->tx_cur + 1) % RUM_TX_LIST_COUNT; 1255 1256 return 0; 1257 } 1258 1259 static void 1260 rum_start(struct ifnet *ifp) 1261 { 1262 struct rum_softc *sc = ifp->if_softc; 1263 struct ieee80211com *ic = &sc->sc_ic; 1264 struct ether_header *eh; 1265 struct ieee80211_node *ni; 1266 struct mbuf *m0; 1267 1268 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1269 return; 1270 1271 for (;;) { 1272 IF_POLL(&ic->ic_mgtq, m0); 1273 if (m0 != NULL) { 1274 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1275 ifp->if_flags |= IFF_OACTIVE; 1276 break; 1277 } 1278 IF_DEQUEUE(&ic->ic_mgtq, m0); 1279 1280 ni = M_GETCTX(m0, struct ieee80211_node *); 1281 M_CLEARCTX(m0); 1282 bpf_mtap3(ic->ic_rawbpf, m0); 1283 if (rum_tx_data(sc, m0, ni) != 0) 1284 break; 1285 1286 } else { 1287 if (ic->ic_state != IEEE80211_S_RUN) 1288 break; 1289 IFQ_POLL(&ifp->if_snd, m0); 1290 if (m0 == NULL) 1291 break; 1292 if (sc->tx_queued >= RUM_TX_LIST_COUNT - 1) { 1293 ifp->if_flags |= IFF_OACTIVE; 1294 break; 1295 } 1296 IFQ_DEQUEUE(&ifp->if_snd, m0); 1297 if (m0->m_len < (int)sizeof(struct ether_header) && 1298 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1299 continue; 1300 1301 eh = mtod(m0, struct ether_header *); 1302 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1303 if (ni == NULL) { 1304 m_freem(m0); 1305 continue; 1306 } 1307 bpf_mtap(ifp, m0); 1308 m0 = ieee80211_encap(ic, m0, ni); 1309 if (m0 == NULL) { 1310 ieee80211_free_node(ni); 1311 continue; 1312 } 1313 bpf_mtap3(ic->ic_rawbpf, m0); 1314 if (rum_tx_data(sc, m0, ni) != 0) { 1315 ieee80211_free_node(ni); 1316 ifp->if_oerrors++; 1317 break; 1318 } 1319 } 1320 1321 sc->sc_tx_timer = 5; 1322 ifp->if_timer = 1; 1323 } 1324 } 1325 1326 static void 1327 rum_watchdog(struct ifnet *ifp) 1328 { 1329 struct rum_softc *sc = ifp->if_softc; 1330 struct ieee80211com *ic = &sc->sc_ic; 1331 1332 ifp->if_timer = 0; 1333 1334 if (sc->sc_tx_timer > 0) { 1335 if (--sc->sc_tx_timer == 0) { 1336 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1337 /*rum_init(ifp); XXX needs a process context! */ 1338 ifp->if_oerrors++; 1339 return; 1340 } 1341 ifp->if_timer = 1; 1342 } 1343 1344 ieee80211_watchdog(ic); 1345 } 1346 1347 static int 1348 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1349 { 1350 #define IS_RUNNING(ifp) \ 1351 (((ifp)->if_flags & IFF_UP) && ((ifp)->if_flags & IFF_RUNNING)) 1352 1353 struct rum_softc *sc = ifp->if_softc; 1354 struct ieee80211com *ic = &sc->sc_ic; 1355 int s, error = 0; 1356 1357 s = splnet(); 1358 1359 switch (cmd) { 1360 case SIOCSIFFLAGS: 1361 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1362 break; 1363 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1364 case IFF_UP|IFF_RUNNING: 1365 rum_update_promisc(sc); 1366 break; 1367 case IFF_UP: 1368 rum_init(ifp); 1369 break; 1370 case IFF_RUNNING: 1371 rum_stop(ifp, 1); 1372 break; 1373 case 0: 1374 break; 1375 } 1376 break; 1377 1378 case SIOCADDMULTI: 1379 case SIOCDELMULTI: 1380 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1381 error = 0; 1382 } 1383 break; 1384 1385 default: 1386 error = ieee80211_ioctl(ic, cmd, data); 1387 } 1388 1389 if (error == ENETRESET) { 1390 if (IS_RUNNING(ifp) && 1391 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1392 rum_init(ifp); 1393 error = 0; 1394 } 1395 1396 splx(s); 1397 1398 return error; 1399 #undef IS_RUNNING 1400 } 1401 1402 static void 1403 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1404 { 1405 usb_device_request_t req; 1406 usbd_status error; 1407 1408 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1409 req.bRequest = RT2573_READ_EEPROM; 1410 USETW(req.wValue, 0); 1411 USETW(req.wIndex, addr); 1412 USETW(req.wLength, len); 1413 1414 error = usbd_do_request(sc->sc_udev, &req, buf); 1415 if (error != 0) { 1416 printf("%s: could not read EEPROM: %s\n", 1417 device_xname(sc->sc_dev), usbd_errstr(error)); 1418 } 1419 } 1420 1421 static uint32_t 1422 rum_read(struct rum_softc *sc, uint16_t reg) 1423 { 1424 uint32_t val; 1425 1426 rum_read_multi(sc, reg, &val, sizeof(val)); 1427 1428 return le32toh(val); 1429 } 1430 1431 static void 1432 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1433 { 1434 usb_device_request_t req; 1435 usbd_status error; 1436 1437 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1438 req.bRequest = RT2573_READ_MULTI_MAC; 1439 USETW(req.wValue, 0); 1440 USETW(req.wIndex, reg); 1441 USETW(req.wLength, len); 1442 1443 error = usbd_do_request(sc->sc_udev, &req, buf); 1444 if (error != 0) { 1445 printf("%s: could not multi read MAC register: %s\n", 1446 device_xname(sc->sc_dev), usbd_errstr(error)); 1447 } 1448 } 1449 1450 static void 1451 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1452 { 1453 uint32_t tmp = htole32(val); 1454 1455 rum_write_multi(sc, reg, &tmp, sizeof(tmp)); 1456 } 1457 1458 static void 1459 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1460 { 1461 usb_device_request_t req; 1462 usbd_status error; 1463 int offset; 1464 1465 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1466 req.bRequest = RT2573_WRITE_MULTI_MAC; 1467 USETW(req.wValue, 0); 1468 1469 /* write at most 64 bytes at a time */ 1470 for (offset = 0; offset < len; offset += 64) { 1471 USETW(req.wIndex, reg + offset); 1472 USETW(req.wLength, MIN(len - offset, 64)); 1473 1474 error = usbd_do_request(sc->sc_udev, &req, (char *)buf + offset); 1475 if (error != 0) { 1476 printf("%s: could not multi write MAC register: %s\n", 1477 device_xname(sc->sc_dev), usbd_errstr(error)); 1478 } 1479 } 1480 } 1481 1482 static void 1483 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1484 { 1485 uint32_t tmp; 1486 int ntries; 1487 1488 for (ntries = 0; ntries < 5; ntries++) { 1489 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1490 break; 1491 } 1492 if (ntries == 5) { 1493 printf("%s: could not write to BBP\n", device_xname(sc->sc_dev)); 1494 return; 1495 } 1496 1497 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1498 rum_write(sc, RT2573_PHY_CSR3, tmp); 1499 } 1500 1501 static uint8_t 1502 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1503 { 1504 uint32_t val; 1505 int ntries; 1506 1507 for (ntries = 0; ntries < 5; ntries++) { 1508 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1509 break; 1510 } 1511 if (ntries == 5) { 1512 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1513 return 0; 1514 } 1515 1516 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1517 rum_write(sc, RT2573_PHY_CSR3, val); 1518 1519 for (ntries = 0; ntries < 100; ntries++) { 1520 val = rum_read(sc, RT2573_PHY_CSR3); 1521 if (!(val & RT2573_BBP_BUSY)) 1522 return val & 0xff; 1523 DELAY(1); 1524 } 1525 1526 printf("%s: could not read BBP\n", device_xname(sc->sc_dev)); 1527 return 0; 1528 } 1529 1530 static void 1531 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1532 { 1533 uint32_t tmp; 1534 int ntries; 1535 1536 for (ntries = 0; ntries < 5; ntries++) { 1537 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1538 break; 1539 } 1540 if (ntries == 5) { 1541 printf("%s: could not write to RF\n", device_xname(sc->sc_dev)); 1542 return; 1543 } 1544 1545 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1546 (reg & 3); 1547 rum_write(sc, RT2573_PHY_CSR4, tmp); 1548 1549 /* remember last written value in sc */ 1550 sc->rf_regs[reg] = val; 1551 1552 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1553 } 1554 1555 static void 1556 rum_select_antenna(struct rum_softc *sc) 1557 { 1558 uint8_t bbp4, bbp77; 1559 uint32_t tmp; 1560 1561 bbp4 = rum_bbp_read(sc, 4); 1562 bbp77 = rum_bbp_read(sc, 77); 1563 1564 /* TBD */ 1565 1566 /* make sure Rx is disabled before switching antenna */ 1567 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1568 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1569 1570 rum_bbp_write(sc, 4, bbp4); 1571 rum_bbp_write(sc, 77, bbp77); 1572 1573 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1574 } 1575 1576 /* 1577 * Enable multi-rate retries for frames sent at OFDM rates. 1578 * In 802.11b/g mode, allow fallback to CCK rates. 1579 */ 1580 static void 1581 rum_enable_mrr(struct rum_softc *sc) 1582 { 1583 struct ieee80211com *ic = &sc->sc_ic; 1584 uint32_t tmp; 1585 1586 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1587 1588 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1589 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1590 tmp |= RT2573_MRR_CCK_FALLBACK; 1591 tmp |= RT2573_MRR_ENABLED; 1592 1593 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1594 } 1595 1596 static void 1597 rum_set_txpreamble(struct rum_softc *sc) 1598 { 1599 uint32_t tmp; 1600 1601 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1602 1603 tmp &= ~RT2573_SHORT_PREAMBLE; 1604 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1605 tmp |= RT2573_SHORT_PREAMBLE; 1606 1607 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1608 } 1609 1610 static void 1611 rum_set_basicrates(struct rum_softc *sc) 1612 { 1613 struct ieee80211com *ic = &sc->sc_ic; 1614 1615 /* update basic rate set */ 1616 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1617 /* 11b basic rates: 1, 2Mbps */ 1618 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1619 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1620 /* 11a basic rates: 6, 12, 24Mbps */ 1621 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1622 } else { 1623 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1624 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1625 } 1626 } 1627 1628 /* 1629 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1630 * driver. 1631 */ 1632 static void 1633 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1634 { 1635 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1636 uint32_t tmp; 1637 1638 /* update all BBP registers that depend on the band */ 1639 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1640 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1641 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1642 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1643 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1644 } 1645 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1646 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1647 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1648 } 1649 1650 sc->bbp17 = bbp17; 1651 rum_bbp_write(sc, 17, bbp17); 1652 rum_bbp_write(sc, 96, bbp96); 1653 rum_bbp_write(sc, 104, bbp104); 1654 1655 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1656 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1657 rum_bbp_write(sc, 75, 0x80); 1658 rum_bbp_write(sc, 86, 0x80); 1659 rum_bbp_write(sc, 88, 0x80); 1660 } 1661 1662 rum_bbp_write(sc, 35, bbp35); 1663 rum_bbp_write(sc, 97, bbp97); 1664 rum_bbp_write(sc, 98, bbp98); 1665 1666 tmp = rum_read(sc, RT2573_PHY_CSR0); 1667 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1668 if (IEEE80211_IS_CHAN_2GHZ(c)) 1669 tmp |= RT2573_PA_PE_2GHZ; 1670 else 1671 tmp |= RT2573_PA_PE_5GHZ; 1672 rum_write(sc, RT2573_PHY_CSR0, tmp); 1673 1674 /* 802.11a uses a 16 microseconds short interframe space */ 1675 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1676 } 1677 1678 static void 1679 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1680 { 1681 struct ieee80211com *ic = &sc->sc_ic; 1682 const struct rfprog *rfprog; 1683 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1684 int8_t power; 1685 u_int i, chan; 1686 1687 chan = ieee80211_chan2ieee(ic, c); 1688 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1689 return; 1690 1691 /* select the appropriate RF settings based on what EEPROM says */ 1692 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1693 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1694 1695 /* find the settings for this channel (we know it exists) */ 1696 for (i = 0; rfprog[i].chan != chan; i++); 1697 1698 power = sc->txpow[i]; 1699 if (power < 0) { 1700 bbp94 += power; 1701 power = 0; 1702 } else if (power > 31) { 1703 bbp94 += power - 31; 1704 power = 31; 1705 } 1706 1707 /* 1708 * If we are switching from the 2GHz band to the 5GHz band or 1709 * vice-versa, BBP registers need to be reprogrammed. 1710 */ 1711 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1712 rum_select_band(sc, c); 1713 rum_select_antenna(sc); 1714 } 1715 ic->ic_curchan = c; 1716 1717 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1718 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1719 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1720 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1721 1722 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1723 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1724 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1725 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1726 1727 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1728 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1729 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1730 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1731 1732 DELAY(10); 1733 1734 /* enable smart mode for MIMO-capable RFs */ 1735 bbp3 = rum_bbp_read(sc, 3); 1736 1737 bbp3 &= ~RT2573_SMART_MODE; 1738 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1739 bbp3 |= RT2573_SMART_MODE; 1740 1741 rum_bbp_write(sc, 3, bbp3); 1742 1743 if (bbp94 != RT2573_BBPR94_DEFAULT) 1744 rum_bbp_write(sc, 94, bbp94); 1745 } 1746 1747 /* 1748 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1749 * and HostAP operating modes. 1750 */ 1751 static void 1752 rum_enable_tsf_sync(struct rum_softc *sc) 1753 { 1754 struct ieee80211com *ic = &sc->sc_ic; 1755 uint32_t tmp; 1756 1757 if (ic->ic_opmode != IEEE80211_M_STA) { 1758 /* 1759 * Change default 16ms TBTT adjustment to 8ms. 1760 * Must be done before enabling beacon generation. 1761 */ 1762 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1763 } 1764 1765 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1766 1767 /* set beacon interval (in 1/16ms unit) */ 1768 tmp |= ic->ic_bss->ni_intval * 16; 1769 1770 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1771 if (ic->ic_opmode == IEEE80211_M_STA) 1772 tmp |= RT2573_TSF_MODE(1); 1773 else 1774 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1775 1776 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1777 } 1778 1779 static void 1780 rum_update_slot(struct rum_softc *sc) 1781 { 1782 struct ieee80211com *ic = &sc->sc_ic; 1783 uint8_t slottime; 1784 uint32_t tmp; 1785 1786 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1787 1788 tmp = rum_read(sc, RT2573_MAC_CSR9); 1789 tmp = (tmp & ~0xff) | slottime; 1790 rum_write(sc, RT2573_MAC_CSR9, tmp); 1791 1792 DPRINTF(("setting slot time to %uus\n", slottime)); 1793 } 1794 1795 static void 1796 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1797 { 1798 uint32_t tmp; 1799 1800 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1801 rum_write(sc, RT2573_MAC_CSR4, tmp); 1802 1803 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1804 rum_write(sc, RT2573_MAC_CSR5, tmp); 1805 } 1806 1807 static void 1808 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1809 { 1810 uint32_t tmp; 1811 1812 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1813 rum_write(sc, RT2573_MAC_CSR2, tmp); 1814 1815 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1816 rum_write(sc, RT2573_MAC_CSR3, tmp); 1817 } 1818 1819 static void 1820 rum_update_promisc(struct rum_softc *sc) 1821 { 1822 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1823 uint32_t tmp; 1824 1825 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1826 1827 tmp &= ~RT2573_DROP_NOT_TO_ME; 1828 if (!(ifp->if_flags & IFF_PROMISC)) 1829 tmp |= RT2573_DROP_NOT_TO_ME; 1830 1831 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1832 1833 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1834 "entering" : "leaving")); 1835 } 1836 1837 static const char * 1838 rum_get_rf(int rev) 1839 { 1840 switch (rev) { 1841 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1842 case RT2573_RF_2528: return "RT2528"; 1843 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1844 case RT2573_RF_5226: return "RT5226"; 1845 default: return "unknown"; 1846 } 1847 } 1848 1849 static void 1850 rum_read_eeprom(struct rum_softc *sc) 1851 { 1852 struct ieee80211com *ic = &sc->sc_ic; 1853 uint16_t val; 1854 #ifdef RUM_DEBUG 1855 int i; 1856 #endif 1857 1858 /* read MAC/BBP type */ 1859 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1860 sc->macbbp_rev = le16toh(val); 1861 1862 /* read MAC address */ 1863 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1864 1865 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1866 val = le16toh(val); 1867 sc->rf_rev = (val >> 11) & 0x1f; 1868 sc->hw_radio = (val >> 10) & 0x1; 1869 sc->rx_ant = (val >> 4) & 0x3; 1870 sc->tx_ant = (val >> 2) & 0x3; 1871 sc->nb_ant = val & 0x3; 1872 1873 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1874 1875 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1876 val = le16toh(val); 1877 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1878 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1879 1880 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1881 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1882 1883 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1884 val = le16toh(val); 1885 if ((val & 0xff) != 0xff) 1886 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1887 1888 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1889 val = le16toh(val); 1890 if ((val & 0xff) != 0xff) 1891 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1892 1893 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1894 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1895 1896 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1897 val = le16toh(val); 1898 if ((val & 0xff) != 0xff) 1899 sc->rffreq = val & 0xff; 1900 1901 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1902 1903 /* read Tx power for all a/b/g channels */ 1904 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1905 /* XXX default Tx power for 802.11a channels */ 1906 memset(sc->txpow + 14, 24, sizeof(sc->txpow) - 14); 1907 #ifdef RUM_DEBUG 1908 for (i = 0; i < 14; i++) 1909 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1910 #endif 1911 1912 /* read default values for BBP registers */ 1913 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1914 #ifdef RUM_DEBUG 1915 for (i = 0; i < 14; i++) { 1916 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1917 continue; 1918 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1919 sc->bbp_prom[i].val)); 1920 } 1921 #endif 1922 } 1923 1924 static int 1925 rum_bbp_init(struct rum_softc *sc) 1926 { 1927 unsigned int i, ntries; 1928 uint8_t val; 1929 1930 /* wait for BBP to be ready */ 1931 for (ntries = 0; ntries < 100; ntries++) { 1932 val = rum_bbp_read(sc, 0); 1933 if (val != 0 && val != 0xff) 1934 break; 1935 DELAY(1000); 1936 } 1937 if (ntries == 100) { 1938 printf("%s: timeout waiting for BBP\n", 1939 device_xname(sc->sc_dev)); 1940 return EIO; 1941 } 1942 1943 /* initialize BBP registers to default values */ 1944 for (i = 0; i < __arraycount(rum_def_bbp); i++) 1945 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1946 1947 /* write vendor-specific BBP values (from EEPROM) */ 1948 for (i = 0; i < 16; i++) { 1949 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1950 continue; 1951 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1952 } 1953 1954 return 0; 1955 } 1956 1957 static int 1958 rum_init(struct ifnet *ifp) 1959 { 1960 struct rum_softc *sc = ifp->if_softc; 1961 struct ieee80211com *ic = &sc->sc_ic; 1962 uint32_t tmp; 1963 usbd_status error = 0; 1964 unsigned int i, ntries; 1965 1966 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1967 if (rum_attachhook(sc)) 1968 goto fail; 1969 } 1970 1971 rum_stop(ifp, 0); 1972 1973 /* initialize MAC registers to default values */ 1974 for (i = 0; i < __arraycount(rum_def_mac); i++) 1975 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1976 1977 /* set host ready */ 1978 rum_write(sc, RT2573_MAC_CSR1, 3); 1979 rum_write(sc, RT2573_MAC_CSR1, 0); 1980 1981 /* wait for BBP/RF to wakeup */ 1982 for (ntries = 0; ntries < 1000; ntries++) { 1983 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1984 break; 1985 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1986 DELAY(1000); 1987 } 1988 if (ntries == 1000) { 1989 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1990 device_xname(sc->sc_dev)); 1991 goto fail; 1992 } 1993 1994 if ((error = rum_bbp_init(sc)) != 0) 1995 goto fail; 1996 1997 /* select default channel */ 1998 rum_select_band(sc, ic->ic_curchan); 1999 rum_select_antenna(sc); 2000 rum_set_chan(sc, ic->ic_curchan); 2001 2002 /* clear STA registers */ 2003 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); 2004 2005 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2006 rum_set_macaddr(sc, ic->ic_myaddr); 2007 2008 /* initialize ASIC */ 2009 rum_write(sc, RT2573_MAC_CSR1, 4); 2010 2011 /* 2012 * Allocate xfer for AMRR statistics requests. 2013 */ 2014 struct usbd_pipe *pipe0 = usbd_get_pipe0(sc->sc_udev); 2015 error = usbd_create_xfer(pipe0, sizeof(sc->sta), 0, 0, 2016 &sc->amrr_xfer); 2017 if (error) { 2018 printf("%s: could not allocate AMRR xfer\n", 2019 device_xname(sc->sc_dev)); 2020 goto fail; 2021 } 2022 2023 /* 2024 * Open Tx and Rx USB bulk pipes. 2025 */ 2026 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2027 &sc->sc_tx_pipeh); 2028 if (error != 0) { 2029 printf("%s: could not open Tx pipe: %s\n", 2030 device_xname(sc->sc_dev), usbd_errstr(error)); 2031 goto fail; 2032 } 2033 2034 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2035 &sc->sc_rx_pipeh); 2036 if (error != 0) { 2037 printf("%s: could not open Rx pipe: %s\n", 2038 device_xname(sc->sc_dev), usbd_errstr(error)); 2039 goto fail; 2040 } 2041 2042 /* 2043 * Allocate Tx and Rx xfer queues. 2044 */ 2045 error = rum_alloc_tx_list(sc); 2046 if (error != 0) { 2047 printf("%s: could not allocate Tx list\n", 2048 device_xname(sc->sc_dev)); 2049 goto fail; 2050 } 2051 2052 error = rum_alloc_rx_list(sc); 2053 if (error != 0) { 2054 printf("%s: could not allocate Rx list\n", 2055 device_xname(sc->sc_dev)); 2056 goto fail; 2057 } 2058 2059 /* 2060 * Start up the receive pipe. 2061 */ 2062 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2063 struct rum_rx_data *data; 2064 2065 data = &sc->rx_data[i]; 2066 2067 usbd_setup_xfer(data->xfer, data, data->buf, MCLBYTES, 2068 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2069 error = usbd_transfer(data->xfer); 2070 if (error != USBD_NORMAL_COMPLETION && 2071 error != USBD_IN_PROGRESS) { 2072 printf("%s: could not queue Rx transfer\n", 2073 device_xname(sc->sc_dev)); 2074 goto fail; 2075 } 2076 } 2077 2078 /* update Rx filter */ 2079 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2080 2081 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2082 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2083 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2084 RT2573_DROP_ACKCTS; 2085 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2086 tmp |= RT2573_DROP_TODS; 2087 if (!(ifp->if_flags & IFF_PROMISC)) 2088 tmp |= RT2573_DROP_NOT_TO_ME; 2089 } 2090 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2091 2092 ifp->if_flags &= ~IFF_OACTIVE; 2093 ifp->if_flags |= IFF_RUNNING; 2094 2095 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2096 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2097 else 2098 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2099 2100 return 0; 2101 2102 fail: rum_stop(ifp, 1); 2103 return error; 2104 } 2105 2106 static void 2107 rum_stop(struct ifnet *ifp, int disable) 2108 { 2109 struct rum_softc *sc = ifp->if_softc; 2110 struct ieee80211com *ic = &sc->sc_ic; 2111 uint32_t tmp; 2112 2113 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2114 2115 sc->sc_tx_timer = 0; 2116 ifp->if_timer = 0; 2117 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2118 2119 /* disable Rx */ 2120 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2121 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2122 2123 /* reset ASIC */ 2124 rum_write(sc, RT2573_MAC_CSR1, 3); 2125 rum_write(sc, RT2573_MAC_CSR1, 0); 2126 2127 if (sc->amrr_xfer != NULL) { 2128 usbd_destroy_xfer(sc->amrr_xfer); 2129 sc->amrr_xfer = NULL; 2130 } 2131 2132 if (sc->sc_rx_pipeh != NULL) { 2133 usbd_abort_pipe(sc->sc_rx_pipeh); 2134 } 2135 2136 if (sc->sc_tx_pipeh != NULL) { 2137 usbd_abort_pipe(sc->sc_tx_pipeh); 2138 } 2139 2140 rum_free_rx_list(sc); 2141 rum_free_tx_list(sc); 2142 2143 if (sc->sc_rx_pipeh != NULL) { 2144 usbd_close_pipe(sc->sc_rx_pipeh); 2145 sc->sc_rx_pipeh = NULL; 2146 } 2147 2148 if (sc->sc_tx_pipeh != NULL) { 2149 usbd_close_pipe(sc->sc_tx_pipeh); 2150 sc->sc_tx_pipeh = NULL; 2151 } 2152 } 2153 2154 static int 2155 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2156 { 2157 usb_device_request_t req; 2158 uint16_t reg = RT2573_MCU_CODE_BASE; 2159 usbd_status error; 2160 2161 /* copy firmware image into NIC */ 2162 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2163 rum_write(sc, reg, UGETDW(ucode)); 2164 2165 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2166 req.bRequest = RT2573_MCU_CNTL; 2167 USETW(req.wValue, RT2573_MCU_RUN); 2168 USETW(req.wIndex, 0); 2169 USETW(req.wLength, 0); 2170 2171 error = usbd_do_request(sc->sc_udev, &req, NULL); 2172 if (error != 0) { 2173 printf("%s: could not run firmware: %s\n", 2174 device_xname(sc->sc_dev), usbd_errstr(error)); 2175 } 2176 return error; 2177 } 2178 2179 static int 2180 rum_prepare_beacon(struct rum_softc *sc) 2181 { 2182 struct ieee80211com *ic = &sc->sc_ic; 2183 struct rum_tx_desc desc; 2184 struct mbuf *m0; 2185 int rate; 2186 2187 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2188 if (m0 == NULL) { 2189 aprint_error_dev(sc->sc_dev, 2190 "could not allocate beacon frame\n"); 2191 return ENOBUFS; 2192 } 2193 2194 /* send beacons at the lowest available rate */ 2195 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2196 2197 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2198 m0->m_pkthdr.len, rate); 2199 2200 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2201 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2202 2203 /* copy beacon header and payload into NIC memory */ 2204 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2205 m0->m_pkthdr.len); 2206 2207 m_freem(m0); 2208 2209 return 0; 2210 } 2211 2212 static void 2213 rum_newassoc(struct ieee80211_node *ni, int isnew) 2214 { 2215 /* start with lowest Tx rate */ 2216 ni->ni_txrate = 0; 2217 } 2218 2219 static void 2220 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2221 { 2222 int i; 2223 2224 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2225 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); 2226 2227 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2228 2229 /* set rate to some reasonable initial value */ 2230 for (i = ni->ni_rates.rs_nrates - 1; 2231 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2232 i--); 2233 ni->ni_txrate = i; 2234 2235 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2236 } 2237 2238 static void 2239 rum_amrr_timeout(void *arg) 2240 { 2241 struct rum_softc *sc = arg; 2242 usb_device_request_t req; 2243 2244 /* 2245 * Asynchronously read statistic registers (cleared by read). 2246 */ 2247 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2248 req.bRequest = RT2573_READ_MULTI_MAC; 2249 USETW(req.wValue, 0); 2250 USETW(req.wIndex, RT2573_STA_CSR0); 2251 USETW(req.wLength, sizeof(sc->sta)); 2252 2253 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2254 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof(sc->sta), 0, 2255 rum_amrr_update); 2256 (void)usbd_transfer(sc->amrr_xfer); 2257 } 2258 2259 static void 2260 rum_amrr_update(struct usbd_xfer *xfer, void *priv, 2261 usbd_status status) 2262 { 2263 struct rum_softc *sc = (struct rum_softc *)priv; 2264 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2265 2266 if (status != USBD_NORMAL_COMPLETION) { 2267 printf("%s: could not retrieve Tx statistics - cancelling " 2268 "automatic rate control\n", device_xname(sc->sc_dev)); 2269 return; 2270 } 2271 2272 /* count TX retry-fail as Tx errors */ 2273 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2274 2275 sc->amn.amn_retrycnt = 2276 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2277 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2278 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2279 2280 sc->amn.amn_txcnt = 2281 sc->amn.amn_retrycnt + 2282 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2283 2284 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2285 2286 callout_reset(&sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2287 } 2288 2289 static int 2290 rum_activate(device_t self, enum devact act) 2291 { 2292 switch (act) { 2293 case DVACT_DEACTIVATE: 2294 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2295 return 0; 2296 default: 2297 return 0; 2298 } 2299 } 2300 2301 MODULE(MODULE_CLASS_DRIVER, if_rum, "bpf"); 2302 2303 #ifdef _MODULE 2304 #include "ioconf.c" 2305 #endif 2306 2307 static int 2308 if_rum_modcmd(modcmd_t cmd, void *aux) 2309 { 2310 int error = 0; 2311 2312 switch (cmd) { 2313 case MODULE_CMD_INIT: 2314 #ifdef _MODULE 2315 error = config_init_component(cfdriver_ioconf_rum, 2316 cfattach_ioconf_rum, cfdata_ioconf_rum); 2317 #endif 2318 return error; 2319 case MODULE_CMD_FINI: 2320 #ifdef _MODULE 2321 error = config_fini_component(cfdriver_ioconf_rum, 2322 cfattach_ioconf_rum, cfdata_ioconf_rum); 2323 #endif 2324 return error; 2325 default: 2326 return ENOTTY; 2327 } 2328 } 2329
Indexes created Thu Oct 02 01:09:59 GMT 2025