if_rum.c revision 1.28
1/* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2/* $NetBSD: if_rum.c,v 1.28 2009/09/23 19:07:19 plunky Exp $ */ 3 4/*- 5 * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini@free.fr> 6 * Copyright (c) 2006 Niall O'Higgins <niallo@openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21/*- 22 * Ralink Technology RT2501USB/RT2601USB chipset driver 23 * http://www.ralinktech.com.tw/ 24 */ 25 26#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: if_rum.c,v 1.28 2009/09/23 19:07:19 plunky Exp $"); 28 29#include "bpfilter.h" 30 31#include <sys/param.h> 32#include <sys/sockio.h> 33#include <sys/sysctl.h> 34#include <sys/mbuf.h> 35#include <sys/kernel.h> 36#include <sys/socket.h> 37#include <sys/systm.h> 38#include <sys/malloc.h> 39#include <sys/conf.h> 40#include <sys/device.h> 41 42#include <sys/bus.h> 43#include <machine/endian.h> 44#include <sys/intr.h> 45 46#if NBPFILTER > 0 47#include <net/bpf.h> 48#endif 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 USB_DEBUG 77#define RUM_DEBUG 78#endif 79 80#ifdef RUM_DEBUG 81#define DPRINTF(x) do { if (rum_debug) logprintf x; } while (0) 82#define DPRINTFN(n, x) do { if (rum_debug >= (n)) logprintf x; } while (0) 83int rum_debug = 1; 84#else 85#define DPRINTF(x) 86#define DPRINTFN(n, x) 87#endif 88 89/* various supported device vendors/products */ 90static const struct usb_devno rum_devs[] = { 91 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_HWU54DM }, 92 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_2 }, 93 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_3 }, 94 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_4 }, 95 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_WUG2700 }, 96 { USB_VENDOR_AMIT, USB_PRODUCT_AMIT_CGWLUSB2GO }, 97 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_2 }, 98 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_3 }, 99 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 100 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 101 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 102 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GR }, 103 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 104 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GL }, 105 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_CGWLUSB2GPX }, 106 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 107 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 108 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 109 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 110 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 111 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWI05GS }, 112 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 113 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 114 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254LB }, 115 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254V2AP }, 116 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 117 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_G54HP }, 118 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, 119 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_WLIUCG }, 120 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 121 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 122 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 123 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_4 }, 124 { USB_VENDOR_NOVATECH, USB_PRODUCT_NOVATECH_RT2573 }, 125 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54HP }, 126 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 127 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 128 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 129 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 130 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_3 }, 131 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 132 { USB_VENDOR_RALINK_2, USB_PRODUCT_RALINK_2_RT2573 }, 133 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 134 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 135 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 136 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 137}; 138 139Static int rum_attachhook(void *); 140Static int rum_alloc_tx_list(struct rum_softc *); 141Static void rum_free_tx_list(struct rum_softc *); 142Static int rum_alloc_rx_list(struct rum_softc *); 143Static void rum_free_rx_list(struct rum_softc *); 144Static int rum_media_change(struct ifnet *); 145Static void rum_next_scan(void *); 146Static void rum_task(void *); 147Static int rum_newstate(struct ieee80211com *, 148 enum ieee80211_state, int); 149Static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 150 usbd_status); 151Static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 152 usbd_status); 153#if NBPFILTER > 0 154Static uint8_t rum_rxrate(const struct rum_rx_desc *); 155#endif 156Static int rum_ack_rate(struct ieee80211com *, int); 157Static uint16_t rum_txtime(int, int, uint32_t); 158Static uint8_t rum_plcp_signal(int); 159Static void rum_setup_tx_desc(struct rum_softc *, 160 struct rum_tx_desc *, uint32_t, uint16_t, int, 161 int); 162Static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 163 struct ieee80211_node *); 164Static int rum_tx_data(struct rum_softc *, struct mbuf *, 165 struct ieee80211_node *); 166Static void rum_start(struct ifnet *); 167Static void rum_watchdog(struct ifnet *); 168Static int rum_ioctl(struct ifnet *, u_long, void *); 169Static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 170 int); 171Static uint32_t rum_read(struct rum_softc *, uint16_t); 172Static void rum_read_multi(struct rum_softc *, uint16_t, void *, 173 int); 174Static void rum_write(struct rum_softc *, uint16_t, uint32_t); 175Static void rum_write_multi(struct rum_softc *, uint16_t, void *, 176 size_t); 177Static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 178Static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 179Static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 180Static void rum_select_antenna(struct rum_softc *); 181Static void rum_enable_mrr(struct rum_softc *); 182Static void rum_set_txpreamble(struct rum_softc *); 183Static void rum_set_basicrates(struct rum_softc *); 184Static void rum_select_band(struct rum_softc *, 185 struct ieee80211_channel *); 186Static void rum_set_chan(struct rum_softc *, 187 struct ieee80211_channel *); 188Static void rum_enable_tsf_sync(struct rum_softc *); 189Static void rum_update_slot(struct rum_softc *); 190Static void rum_set_bssid(struct rum_softc *, const uint8_t *); 191Static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 192Static void rum_update_promisc(struct rum_softc *); 193Static const char *rum_get_rf(int); 194Static void rum_read_eeprom(struct rum_softc *); 195Static int rum_bbp_init(struct rum_softc *); 196Static int rum_init(struct ifnet *); 197Static void rum_stop(struct ifnet *, int); 198Static int rum_load_microcode(struct rum_softc *, const u_char *, 199 size_t); 200Static int rum_prepare_beacon(struct rum_softc *); 201Static void rum_newassoc(struct ieee80211_node *, int); 202Static void rum_amrr_start(struct rum_softc *, 203 struct ieee80211_node *); 204Static void rum_amrr_timeout(void *); 205Static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 206 usbd_status status); 207 208/* 209 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 210 */ 211static const struct ieee80211_rateset rum_rateset_11a = 212 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 213 214static const struct ieee80211_rateset rum_rateset_11b = 215 { 4, { 2, 4, 11, 22 } }; 216 217static const struct ieee80211_rateset rum_rateset_11g = 218 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 219 220static const struct { 221 uint32_t reg; 222 uint32_t val; 223} rum_def_mac[] = { 224 RT2573_DEF_MAC 225}; 226 227static const struct { 228 uint8_t reg; 229 uint8_t val; 230} rum_def_bbp[] = { 231 RT2573_DEF_BBP 232}; 233 234static const struct rfprog { 235 uint8_t chan; 236 uint32_t r1, r2, r3, r4; 237} rum_rf5226[] = { 238 RT2573_RF5226 239}, rum_rf5225[] = { 240 RT2573_RF5225 241}; 242 243USB_DECLARE_DRIVER(rum); 244 245USB_MATCH(rum) 246{ 247 USB_MATCH_START(rum, uaa); 248 249 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 250 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 251} 252 253Static int 254rum_attachhook(void *xsc) 255{ 256 struct rum_softc *sc = xsc; 257 firmware_handle_t fwh; 258 const char *name = "rum-rt2573"; 259 u_char *ucode; 260 size_t size; 261 int error; 262 263 if ((error = firmware_open("rum", name, &fwh)) != 0) { 264 printf("%s: failed loadfirmware of file %s (error %d)\n", 265 USBDEVNAME(sc->sc_dev), name, error); 266 return error; 267 } 268 size = firmware_get_size(fwh); 269 ucode = firmware_malloc(size); 270 if (ucode == NULL) { 271 printf("%s: failed to allocate firmware memory\n", 272 USBDEVNAME(sc->sc_dev)); 273 firmware_close(fwh); 274 return ENOMEM; 275 } 276 error = firmware_read(fwh, 0, ucode, size); 277 firmware_close(fwh); 278 if (error != 0) { 279 printf("%s: failed to read firmware (error %d)\n", 280 USBDEVNAME(sc->sc_dev), error); 281 firmware_free(ucode, 0); 282 return error; 283 } 284 285 if (rum_load_microcode(sc, ucode, size) != 0) { 286 printf("%s: could not load 8051 microcode\n", 287 USBDEVNAME(sc->sc_dev)); 288 firmware_free(ucode, 0); 289 return ENXIO; 290 } 291 292 firmware_free(ucode, 0); 293 sc->sc_flags |= RT2573_FWLOADED; 294 295 return 0; 296} 297 298USB_ATTACH(rum) 299{ 300 USB_ATTACH_START(rum, sc, uaa); 301 struct ieee80211com *ic = &sc->sc_ic; 302 struct ifnet *ifp = &sc->sc_if; 303 usb_interface_descriptor_t *id; 304 usb_endpoint_descriptor_t *ed; 305 usbd_status error; 306 char *devinfop; 307 int i, ntries; 308 uint32_t tmp; 309 310 sc->sc_dev = self; 311 sc->sc_udev = uaa->device; 312 sc->sc_flags = 0; 313 314 aprint_naive("\n"); 315 aprint_normal("\n"); 316 317 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 318 aprint_normal_dev(self, "%s\n", devinfop); 319 usbd_devinfo_free(devinfop); 320 321 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 322 aprint_error_dev(self, "could not set configuration no\n"); 323 USB_ATTACH_ERROR_RETURN; 324 } 325 326 /* get the first interface handle */ 327 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 328 &sc->sc_iface); 329 if (error != 0) { 330 aprint_error_dev(self, "could not get interface handle\n"); 331 USB_ATTACH_ERROR_RETURN; 332 } 333 334 /* 335 * Find endpoints. 336 */ 337 id = usbd_get_interface_descriptor(sc->sc_iface); 338 339 sc->sc_rx_no = sc->sc_tx_no = -1; 340 for (i = 0; i < id->bNumEndpoints; i++) { 341 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 342 if (ed == NULL) { 343 aprint_error_dev(self, 344 "no endpoint descriptor for iface %d\n", i); 345 USB_ATTACH_ERROR_RETURN; 346 } 347 348 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 349 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 350 sc->sc_rx_no = ed->bEndpointAddress; 351 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 352 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 353 sc->sc_tx_no = ed->bEndpointAddress; 354 } 355 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 356 aprint_error_dev(self, "missing endpoint\n"); 357 USB_ATTACH_ERROR_RETURN; 358 } 359 360 usb_init_task(&sc->sc_task, rum_task, sc); 361 usb_callout_init(sc->sc_scan_ch); 362 363 sc->amrr.amrr_min_success_threshold = 1; 364 sc->amrr.amrr_max_success_threshold = 10; 365 usb_callout_init(sc->sc_amrr_ch); 366 367 /* retrieve RT2573 rev. no */ 368 for (ntries = 0; ntries < 1000; ntries++) { 369 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 370 break; 371 DELAY(1000); 372 } 373 if (ntries == 1000) { 374 aprint_error_dev(self, "timeout waiting for chip to settle\n"); 375 USB_ATTACH_ERROR_RETURN; 376 } 377 378 /* retrieve MAC address and various other things from EEPROM */ 379 rum_read_eeprom(sc); 380 381 aprint_normal_dev(self, 382 "MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 383 sc->macbbp_rev, tmp, 384 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 385 386 ic->ic_ifp = ifp; 387 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 388 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 389 ic->ic_state = IEEE80211_S_INIT; 390 391 /* set device capabilities */ 392 ic->ic_caps = 393 IEEE80211_C_IBSS | /* IBSS mode supported */ 394 IEEE80211_C_MONITOR | /* monitor mode supported */ 395 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 396 IEEE80211_C_TXPMGT | /* tx power management */ 397 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 398 IEEE80211_C_SHSLOT | /* short slot time supported */ 399 IEEE80211_C_WPA; /* 802.11i */ 400 401 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 402 /* set supported .11a rates */ 403 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 404 405 /* set supported .11a channels */ 406 for (i = 34; i <= 46; i += 4) { 407 ic->ic_channels[i].ic_freq = 408 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 409 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 410 } 411 for (i = 36; i <= 64; i += 4) { 412 ic->ic_channels[i].ic_freq = 413 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 414 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 415 } 416 for (i = 100; i <= 140; i += 4) { 417 ic->ic_channels[i].ic_freq = 418 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 419 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 420 } 421 for (i = 149; i <= 165; i += 4) { 422 ic->ic_channels[i].ic_freq = 423 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 424 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 425 } 426 } 427 428 /* set supported .11b and .11g rates */ 429 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 430 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 431 432 /* set supported .11b and .11g channels (1 through 14) */ 433 for (i = 1; i <= 14; i++) { 434 ic->ic_channels[i].ic_freq = 435 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 436 ic->ic_channels[i].ic_flags = 437 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 438 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 439 } 440 441 ifp->if_softc = sc; 442 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 443 ifp->if_init = rum_init; 444 ifp->if_ioctl = rum_ioctl; 445 ifp->if_start = rum_start; 446 ifp->if_watchdog = rum_watchdog; 447 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 448 IFQ_SET_READY(&ifp->if_snd); 449 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 450 451 if_attach(ifp); 452 ieee80211_ifattach(ic); 453 ic->ic_newassoc = rum_newassoc; 454 455 /* override state transition machine */ 456 sc->sc_newstate = ic->ic_newstate; 457 ic->ic_newstate = rum_newstate; 458 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 459 460#if NBPFILTER > 0 461 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 462 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 463 464 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 465 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 466 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 467 468 sc->sc_txtap_len = sizeof sc->sc_txtapu; 469 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 470 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 471#endif 472 473 ieee80211_announce(ic); 474 475 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 476 USBDEV(sc->sc_dev)); 477 478 USB_ATTACH_SUCCESS_RETURN; 479} 480 481USB_DETACH(rum) 482{ 483 USB_DETACH_START(rum, sc); 484 struct ieee80211com *ic = &sc->sc_ic; 485 struct ifnet *ifp = &sc->sc_if; 486 int s; 487 488 if (!ifp->if_softc) 489 return 0; 490 491 s = splusb(); 492 493 rum_stop(ifp, 1); 494 usb_rem_task(sc->sc_udev, &sc->sc_task); 495 usb_uncallout(sc->sc_scan_ch, rum_next_scan, sc); 496 usb_uncallout(sc->sc_amrr_ch, rum_amrr_timeout, sc); 497 498 if (sc->amrr_xfer != NULL) { 499 usbd_free_xfer(sc->amrr_xfer); 500 sc->amrr_xfer = NULL; 501 } 502 503 if (sc->sc_rx_pipeh != NULL) { 504 usbd_abort_pipe(sc->sc_rx_pipeh); 505 usbd_close_pipe(sc->sc_rx_pipeh); 506 } 507 508 if (sc->sc_tx_pipeh != NULL) { 509 usbd_abort_pipe(sc->sc_tx_pipeh); 510 usbd_close_pipe(sc->sc_tx_pipeh); 511 } 512 513#if NBPFILTER > 0 514 bpfdetach(ifp); 515#endif 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, 522 USBDEV(sc->sc_dev)); 523 524 return 0; 525} 526 527Static int 528rum_alloc_tx_list(struct rum_softc *sc) 529{ 530 struct rum_tx_data *data; 531 int i, error; 532 533 sc->tx_queued = 0; 534 535 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 536 data = &sc->tx_data[i]; 537 538 data->sc = sc; 539 540 data->xfer = usbd_alloc_xfer(sc->sc_udev); 541 if (data->xfer == NULL) { 542 printf("%s: could not allocate tx xfer\n", 543 USBDEVNAME(sc->sc_dev)); 544 error = ENOMEM; 545 goto fail; 546 } 547 548 data->buf = usbd_alloc_buffer(data->xfer, 549 RT2573_TX_DESC_SIZE + MCLBYTES); 550 if (data->buf == NULL) { 551 printf("%s: could not allocate tx buffer\n", 552 USBDEVNAME(sc->sc_dev)); 553 error = ENOMEM; 554 goto fail; 555 } 556 557 /* clean Tx descriptor */ 558 memset(data->buf, 0, RT2573_TX_DESC_SIZE); 559 } 560 561 return 0; 562 563fail: rum_free_tx_list(sc); 564 return error; 565} 566 567Static void 568rum_free_tx_list(struct rum_softc *sc) 569{ 570 struct rum_tx_data *data; 571 int i; 572 573 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 574 data = &sc->tx_data[i]; 575 576 if (data->xfer != NULL) { 577 usbd_free_xfer(data->xfer); 578 data->xfer = NULL; 579 } 580 581 if (data->ni != NULL) { 582 ieee80211_free_node(data->ni); 583 data->ni = NULL; 584 } 585 } 586} 587 588Static int 589rum_alloc_rx_list(struct rum_softc *sc) 590{ 591 struct rum_rx_data *data; 592 int i, error; 593 594 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 595 data = &sc->rx_data[i]; 596 597 data->sc = sc; 598 599 data->xfer = usbd_alloc_xfer(sc->sc_udev); 600 if (data->xfer == NULL) { 601 printf("%s: could not allocate rx xfer\n", 602 USBDEVNAME(sc->sc_dev)); 603 error = ENOMEM; 604 goto fail; 605 } 606 607 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 608 printf("%s: could not allocate rx buffer\n", 609 USBDEVNAME(sc->sc_dev)); 610 error = ENOMEM; 611 goto fail; 612 } 613 614 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 615 if (data->m == NULL) { 616 printf("%s: could not allocate rx mbuf\n", 617 USBDEVNAME(sc->sc_dev)); 618 error = ENOMEM; 619 goto fail; 620 } 621 622 MCLGET(data->m, M_DONTWAIT); 623 if (!(data->m->m_flags & M_EXT)) { 624 printf("%s: could not allocate rx mbuf cluster\n", 625 USBDEVNAME(sc->sc_dev)); 626 error = ENOMEM; 627 goto fail; 628 } 629 630 data->buf = mtod(data->m, uint8_t *); 631 } 632 633 return 0; 634 635fail: rum_free_tx_list(sc); 636 return error; 637} 638 639Static void 640rum_free_rx_list(struct rum_softc *sc) 641{ 642 struct rum_rx_data *data; 643 int i; 644 645 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 646 data = &sc->rx_data[i]; 647 648 if (data->xfer != NULL) { 649 usbd_free_xfer(data->xfer); 650 data->xfer = NULL; 651 } 652 653 if (data->m != NULL) { 654 m_freem(data->m); 655 data->m = NULL; 656 } 657 } 658} 659 660Static int 661rum_media_change(struct ifnet *ifp) 662{ 663 int error; 664 665 error = ieee80211_media_change(ifp); 666 if (error != ENETRESET) 667 return error; 668 669 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 670 rum_init(ifp); 671 672 return 0; 673} 674 675/* 676 * This function is called periodically (every 200ms) during scanning to 677 * switch from one channel to another. 678 */ 679Static void 680rum_next_scan(void *arg) 681{ 682 struct rum_softc *sc = arg; 683 struct ieee80211com *ic = &sc->sc_ic; 684 685 if (ic->ic_state == IEEE80211_S_SCAN) 686 ieee80211_next_scan(ic); 687} 688 689Static void 690rum_task(void *arg) 691{ 692 struct rum_softc *sc = arg; 693 struct ieee80211com *ic = &sc->sc_ic; 694 enum ieee80211_state ostate; 695 struct ieee80211_node *ni; 696 uint32_t tmp; 697 698 ostate = ic->ic_state; 699 700 switch (sc->sc_state) { 701 case IEEE80211_S_INIT: 702 if (ostate == IEEE80211_S_RUN) { 703 /* abort TSF synchronization */ 704 tmp = rum_read(sc, RT2573_TXRX_CSR9); 705 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 706 } 707 break; 708 709 case IEEE80211_S_SCAN: 710 rum_set_chan(sc, ic->ic_curchan); 711 usb_callout(sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 712 break; 713 714 case IEEE80211_S_AUTH: 715 rum_set_chan(sc, ic->ic_curchan); 716 break; 717 718 case IEEE80211_S_ASSOC: 719 rum_set_chan(sc, ic->ic_curchan); 720 break; 721 722 case IEEE80211_S_RUN: 723 rum_set_chan(sc, ic->ic_curchan); 724 725 ni = ic->ic_bss; 726 727 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 728 rum_update_slot(sc); 729 rum_enable_mrr(sc); 730 rum_set_txpreamble(sc); 731 rum_set_basicrates(sc); 732 rum_set_bssid(sc, ni->ni_bssid); 733 } 734 735 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 736 ic->ic_opmode == IEEE80211_M_IBSS) 737 rum_prepare_beacon(sc); 738 739 if (ic->ic_opmode != IEEE80211_M_MONITOR) 740 rum_enable_tsf_sync(sc); 741 742 if (ic->ic_opmode == IEEE80211_M_STA) { 743 /* fake a join to init the tx rate */ 744 rum_newassoc(ic->ic_bss, 1); 745 746 /* enable automatic rate adaptation in STA mode */ 747 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 748 rum_amrr_start(sc, ni); 749 } 750 751 break; 752 } 753 754 sc->sc_newstate(ic, sc->sc_state, -1); 755} 756 757Static int 758rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 759{ 760 struct rum_softc *sc = ic->ic_ifp->if_softc; 761 762 usb_rem_task(sc->sc_udev, &sc->sc_task); 763 usb_uncallout(sc->sc_scan_ch, rum_next_scan, sc); 764 usb_uncallout(sc->sc_amrr_ch, rum_amrr_timeout, sc); 765 766 /* do it in a process context */ 767 sc->sc_state = nstate; 768 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 769 770 return 0; 771} 772 773/* quickly determine if a given rate is CCK or OFDM */ 774#define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 775 776#define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 777#define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 778 779Static void 780rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 781{ 782 struct rum_tx_data *data = priv; 783 struct rum_softc *sc = data->sc; 784 struct ifnet *ifp = &sc->sc_if; 785 int s; 786 787 if (status != USBD_NORMAL_COMPLETION) { 788 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 789 return; 790 791 printf("%s: could not transmit buffer: %s\n", 792 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 793 794 if (status == USBD_STALLED) 795 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 796 797 ifp->if_oerrors++; 798 return; 799 } 800 801 s = splnet(); 802 803 ieee80211_free_node(data->ni); 804 data->ni = NULL; 805 806 sc->tx_queued--; 807 ifp->if_opackets++; 808 809 DPRINTFN(10, ("tx done\n")); 810 811 sc->sc_tx_timer = 0; 812 ifp->if_flags &= ~IFF_OACTIVE; 813 rum_start(ifp); 814 815 splx(s); 816} 817 818Static void 819rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 820{ 821 struct rum_rx_data *data = priv; 822 struct rum_softc *sc = data->sc; 823 struct ieee80211com *ic = &sc->sc_ic; 824 struct ifnet *ifp = &sc->sc_if; 825 struct rum_rx_desc *desc; 826 struct ieee80211_frame *wh; 827 struct ieee80211_node *ni; 828 struct mbuf *mnew, *m; 829 int s, len; 830 831 if (status != USBD_NORMAL_COMPLETION) { 832 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 833 return; 834 835 if (status == USBD_STALLED) 836 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 837 goto skip; 838 } 839 840 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 841 842 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 843 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 844 len)); 845 ifp->if_ierrors++; 846 goto skip; 847 } 848 849 desc = (struct rum_rx_desc *)data->buf; 850 851 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 852 /* 853 * This should not happen since we did not request to receive 854 * those frames when we filled RT2573_TXRX_CSR0. 855 */ 856 DPRINTFN(5, ("CRC error\n")); 857 ifp->if_ierrors++; 858 goto skip; 859 } 860 861 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 862 if (mnew == NULL) { 863 printf("%s: could not allocate rx mbuf\n", 864 USBDEVNAME(sc->sc_dev)); 865 ifp->if_ierrors++; 866 goto skip; 867 } 868 869 MCLGET(mnew, M_DONTWAIT); 870 if (!(mnew->m_flags & M_EXT)) { 871 printf("%s: could not allocate rx mbuf cluster\n", 872 USBDEVNAME(sc->sc_dev)); 873 m_freem(mnew); 874 ifp->if_ierrors++; 875 goto skip; 876 } 877 878 m = data->m; 879 data->m = mnew; 880 data->buf = mtod(data->m, uint8_t *); 881 882 /* finalize mbuf */ 883 m->m_pkthdr.rcvif = ifp; 884 m->m_data = (void *)(desc + 1); 885 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 886 887 s = splnet(); 888 889#if NBPFILTER > 0 890 if (sc->sc_drvbpf != NULL) { 891 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 892 893 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 894 tap->wr_rate = rum_rxrate(desc); 895 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 896 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 897 tap->wr_antenna = sc->rx_ant; 898 tap->wr_antsignal = desc->rssi; 899 900 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 901 } 902#endif 903 904 wh = mtod(m, struct ieee80211_frame *); 905 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 906 907 /* send the frame to the 802.11 layer */ 908 ieee80211_input(ic, m, ni, desc->rssi, 0); 909 910 /* node is no longer needed */ 911 ieee80211_free_node(ni); 912 913 splx(s); 914 915 DPRINTFN(15, ("rx done\n")); 916 917skip: /* setup a new transfer */ 918 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 919 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 920 usbd_transfer(xfer); 921} 922 923/* 924 * This function is only used by the Rx radiotap code. It returns the rate at 925 * which a given frame was received. 926 */ 927#if NBPFILTER > 0 928Static uint8_t 929rum_rxrate(const struct rum_rx_desc *desc) 930{ 931 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 932 /* reverse function of rum_plcp_signal */ 933 switch (desc->rate) { 934 case 0xb: return 12; 935 case 0xf: return 18; 936 case 0xa: return 24; 937 case 0xe: return 36; 938 case 0x9: return 48; 939 case 0xd: return 72; 940 case 0x8: return 96; 941 case 0xc: return 108; 942 } 943 } else { 944 if (desc->rate == 10) 945 return 2; 946 if (desc->rate == 20) 947 return 4; 948 if (desc->rate == 55) 949 return 11; 950 if (desc->rate == 110) 951 return 22; 952 } 953 return 2; /* should not get there */ 954} 955#endif 956 957/* 958 * Return the expected ack rate for a frame transmitted at rate `rate'. 959 * XXX: this should depend on the destination node basic rate set. 960 */ 961Static int 962rum_ack_rate(struct ieee80211com *ic, int rate) 963{ 964 switch (rate) { 965 /* CCK rates */ 966 case 2: 967 return 2; 968 case 4: 969 case 11: 970 case 22: 971 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 972 973 /* OFDM rates */ 974 case 12: 975 case 18: 976 return 12; 977 case 24: 978 case 36: 979 return 24; 980 case 48: 981 case 72: 982 case 96: 983 case 108: 984 return 48; 985 } 986 987 /* default to 1Mbps */ 988 return 2; 989} 990 991/* 992 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 993 * The function automatically determines the operating mode depending on the 994 * given rate. `flags' indicates whether short preamble is in use or not. 995 */ 996Static uint16_t 997rum_txtime(int len, int rate, uint32_t flags) 998{ 999 uint16_t txtime; 1000 1001 if (RUM_RATE_IS_OFDM(rate)) { 1002 /* IEEE Std 802.11a-1999, pp. 37 */ 1003 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 1004 txtime = 16 + 4 + 4 * txtime + 6; 1005 } else { 1006 /* IEEE Std 802.11b-1999, pp. 28 */ 1007 txtime = (16 * len + rate - 1) / rate; 1008 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1009 txtime += 72 + 24; 1010 else 1011 txtime += 144 + 48; 1012 } 1013 return txtime; 1014} 1015 1016Static uint8_t 1017rum_plcp_signal(int rate) 1018{ 1019 switch (rate) { 1020 /* CCK rates (returned values are device-dependent) */ 1021 case 2: return 0x0; 1022 case 4: return 0x1; 1023 case 11: return 0x2; 1024 case 22: return 0x3; 1025 1026 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1027 case 12: return 0xb; 1028 case 18: return 0xf; 1029 case 24: return 0xa; 1030 case 36: return 0xe; 1031 case 48: return 0x9; 1032 case 72: return 0xd; 1033 case 96: return 0x8; 1034 case 108: return 0xc; 1035 1036 /* unsupported rates (should not get there) */ 1037 default: return 0xff; 1038 } 1039} 1040 1041Static void 1042rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1043 uint32_t flags, uint16_t xflags, int len, int rate) 1044{ 1045 struct ieee80211com *ic = &sc->sc_ic; 1046 uint16_t plcp_length; 1047 int remainder; 1048 1049 desc->flags = htole32(flags); 1050 desc->flags |= htole32(RT2573_TX_VALID); 1051 desc->flags |= htole32(len << 16); 1052 1053 desc->xflags = htole16(xflags); 1054 1055 desc->wme = htole16( 1056 RT2573_QID(0) | 1057 RT2573_AIFSN(2) | 1058 RT2573_LOGCWMIN(4) | 1059 RT2573_LOGCWMAX(10)); 1060 1061 /* setup PLCP fields */ 1062 desc->plcp_signal = rum_plcp_signal(rate); 1063 desc->plcp_service = 4; 1064 1065 len += IEEE80211_CRC_LEN; 1066 if (RUM_RATE_IS_OFDM(rate)) { 1067 desc->flags |= htole32(RT2573_TX_OFDM); 1068 1069 plcp_length = len & 0xfff; 1070 desc->plcp_length_hi = plcp_length >> 6; 1071 desc->plcp_length_lo = plcp_length & 0x3f; 1072 } else { 1073 plcp_length = (16 * len + rate - 1) / rate; 1074 if (rate == 22) { 1075 remainder = (16 * len) % 22; 1076 if (remainder != 0 && remainder < 7) 1077 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1078 } 1079 desc->plcp_length_hi = plcp_length >> 8; 1080 desc->plcp_length_lo = plcp_length & 0xff; 1081 1082 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1083 desc->plcp_signal |= 0x08; 1084 } 1085} 1086 1087#define RUM_TX_TIMEOUT 5000 1088 1089Static int 1090rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1091{ 1092 struct ieee80211com *ic = &sc->sc_ic; 1093 struct rum_tx_desc *desc; 1094 struct rum_tx_data *data; 1095 struct ieee80211_frame *wh; 1096 struct ieee80211_key *k; 1097 uint32_t flags = 0; 1098 uint16_t dur; 1099 usbd_status error; 1100 int xferlen, rate; 1101 1102 data = &sc->tx_data[0]; 1103 desc = (struct rum_tx_desc *)data->buf; 1104 1105 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 1106 1107 data->m = m0; 1108 data->ni = ni; 1109 1110 wh = mtod(m0, struct ieee80211_frame *); 1111 1112 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1113 k = ieee80211_crypto_encap(ic, ni, m0); 1114 if (k == NULL) { 1115 m_freem(m0); 1116 return ENOBUFS; 1117 } 1118 } 1119 1120 wh = mtod(m0, struct ieee80211_frame *); 1121 1122 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1123 flags |= RT2573_TX_NEED_ACK; 1124 1125 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1126 ic->ic_flags) + sc->sifs; 1127 *(uint16_t *)wh->i_dur = htole16(dur); 1128 1129 /* tell hardware to set timestamp in probe responses */ 1130 if ((wh->i_fc[0] & 1131 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1132 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1133 flags |= RT2573_TX_TIMESTAMP; 1134 } 1135 1136#if NBPFILTER > 0 1137 if (sc->sc_drvbpf != NULL) { 1138 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1139 1140 tap->wt_flags = 0; 1141 tap->wt_rate = rate; 1142 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1143 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1144 tap->wt_antenna = sc->tx_ant; 1145 1146 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1147 } 1148#endif 1149 1150 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1151 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1152 1153 /* align end on a 4-bytes boundary */ 1154 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1155 1156 /* 1157 * No space left in the last URB to store the extra 4 bytes, force 1158 * sending of another URB. 1159 */ 1160 if ((xferlen % 64) == 0) 1161 xferlen += 4; 1162 1163 DPRINTFN(10, ("sending msg frame len=%zu rate=%u xfer len=%u\n", 1164 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1165 rate, xferlen)); 1166 1167 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1168 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1169 1170 error = usbd_transfer(data->xfer); 1171 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1172 m_freem(m0); 1173 return error; 1174 } 1175 1176 sc->tx_queued++; 1177 1178 return 0; 1179} 1180 1181Static int 1182rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1183{ 1184 struct ieee80211com *ic = &sc->sc_ic; 1185 struct rum_tx_desc *desc; 1186 struct rum_tx_data *data; 1187 struct ieee80211_frame *wh; 1188 struct ieee80211_key *k; 1189 uint32_t flags = 0; 1190 uint16_t dur; 1191 usbd_status error; 1192 int xferlen, rate; 1193 1194 wh = mtod(m0, struct ieee80211_frame *); 1195 1196 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1197 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1198 else 1199 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1200 if (rate == 0) 1201 rate = 2; /* XXX should not happen */ 1202 rate &= IEEE80211_RATE_VAL; 1203 1204 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1205 k = ieee80211_crypto_encap(ic, ni, m0); 1206 if (k == NULL) { 1207 m_freem(m0); 1208 return ENOBUFS; 1209 } 1210 1211 /* packet header may have moved, reset our local pointer */ 1212 wh = mtod(m0, struct ieee80211_frame *); 1213 } 1214 1215 data = &sc->tx_data[0]; 1216 desc = (struct rum_tx_desc *)data->buf; 1217 1218 data->ni = ni; 1219 1220 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1221 flags |= RT2573_TX_NEED_ACK; 1222 1223 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1224 ic->ic_flags) + sc->sifs; 1225 *(uint16_t *)wh->i_dur = htole16(dur); 1226 } 1227 1228#if NBPFILTER > 0 1229 if (sc->sc_drvbpf != NULL) { 1230 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1231 1232 tap->wt_flags = 0; 1233 tap->wt_rate = rate; 1234 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1235 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1236 tap->wt_antenna = sc->tx_ant; 1237 1238 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1239 } 1240#endif 1241 1242 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1243 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1244 1245 /* align end on a 4-bytes boundary */ 1246 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1247 1248 /* 1249 * No space left in the last URB to store the extra 4 bytes, force 1250 * sending of another URB. 1251 */ 1252 if ((xferlen % 64) == 0) 1253 xferlen += 4; 1254 1255 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1256 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1257 rate, xferlen)); 1258 1259 /* mbuf is no longer needed */ 1260 m_freem(m0); 1261 1262 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1263 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1264 1265 error = usbd_transfer(data->xfer); 1266 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) 1267 return error; 1268 1269 sc->tx_queued++; 1270 1271 return 0; 1272} 1273 1274Static void 1275rum_start(struct ifnet *ifp) 1276{ 1277 struct rum_softc *sc = ifp->if_softc; 1278 struct ieee80211com *ic = &sc->sc_ic; 1279 struct ether_header *eh; 1280 struct ieee80211_node *ni; 1281 struct mbuf *m0; 1282 1283 for (;;) { 1284 IF_POLL(&ic->ic_mgtq, m0); 1285 if (m0 != NULL) { 1286 if (sc->tx_queued >= RUM_TX_LIST_COUNT) { 1287 ifp->if_flags |= IFF_OACTIVE; 1288 break; 1289 } 1290 IF_DEQUEUE(&ic->ic_mgtq, m0); 1291 1292 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1293 m0->m_pkthdr.rcvif = NULL; 1294#if NBPFILTER > 0 1295 if (ic->ic_rawbpf != NULL) 1296 bpf_mtap(ic->ic_rawbpf, m0); 1297#endif 1298 if (rum_tx_mgt(sc, m0, ni) != 0) 1299 break; 1300 1301 } else { 1302 if (ic->ic_state != IEEE80211_S_RUN) 1303 break; 1304 IFQ_POLL(&ifp->if_snd, m0); 1305 if (m0 == NULL) 1306 break; 1307 if (sc->tx_queued >= RUM_TX_LIST_COUNT) { 1308 ifp->if_flags |= IFF_OACTIVE; 1309 break; 1310 } 1311 IFQ_DEQUEUE(&ifp->if_snd, m0); 1312 if (m0->m_len < sizeof(struct ether_header) && 1313 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1314 continue; 1315 1316 eh = mtod(m0, struct ether_header *); 1317 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1318 if (ni == NULL) { 1319 m_freem(m0); 1320 continue; 1321 } 1322#if NBPFILTER > 0 1323 if (ifp->if_bpf != NULL) 1324 bpf_mtap(ifp->if_bpf, m0); 1325#endif 1326 m0 = ieee80211_encap(ic, m0, ni); 1327 if (m0 == NULL) { 1328 ieee80211_free_node(ni); 1329 continue; 1330 } 1331#if NBPFILTER > 0 1332 if (ic->ic_rawbpf != NULL) 1333 bpf_mtap(ic->ic_rawbpf, m0); 1334#endif 1335 if (rum_tx_data(sc, m0, ni) != 0) { 1336 ieee80211_free_node(ni); 1337 ifp->if_oerrors++; 1338 break; 1339 } 1340 } 1341 1342 sc->sc_tx_timer = 5; 1343 ifp->if_timer = 1; 1344 } 1345} 1346 1347Static void 1348rum_watchdog(struct ifnet *ifp) 1349{ 1350 struct rum_softc *sc = ifp->if_softc; 1351 struct ieee80211com *ic = &sc->sc_ic; 1352 1353 ifp->if_timer = 0; 1354 1355 if (sc->sc_tx_timer > 0) { 1356 if (--sc->sc_tx_timer == 0) { 1357 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1358 /*rum_init(ifp); XXX needs a process context! */ 1359 ifp->if_oerrors++; 1360 return; 1361 } 1362 ifp->if_timer = 1; 1363 } 1364 1365 ieee80211_watchdog(ic); 1366} 1367 1368Static int 1369rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1370{ 1371 struct rum_softc *sc = ifp->if_softc; 1372 struct ieee80211com *ic = &sc->sc_ic; 1373 int s, error = 0; 1374 1375 s = splnet(); 1376 1377 switch (cmd) { 1378 case SIOCSIFFLAGS: 1379 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1380 break; 1381 /* XXX re-use ether_ioctl() */ 1382 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1383 case IFF_UP|IFF_RUNNING: 1384 rum_update_promisc(sc); 1385 break; 1386 case IFF_UP: 1387 rum_init(ifp); 1388 break; 1389 case IFF_RUNNING: 1390 rum_stop(ifp, 1); 1391 break; 1392 case 0: 1393 break; 1394 } 1395 break; 1396 1397 default: 1398 error = ieee80211_ioctl(ic, cmd, data); 1399 } 1400 1401 if (error == ENETRESET) { 1402 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1403 (IFF_UP | IFF_RUNNING)) 1404 rum_init(ifp); 1405 error = 0; 1406 } 1407 1408 splx(s); 1409 1410 return error; 1411} 1412 1413Static void 1414rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1415{ 1416 usb_device_request_t req; 1417 usbd_status error; 1418 1419 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1420 req.bRequest = RT2573_READ_EEPROM; 1421 USETW(req.wValue, 0); 1422 USETW(req.wIndex, addr); 1423 USETW(req.wLength, len); 1424 1425 error = usbd_do_request(sc->sc_udev, &req, buf); 1426 if (error != 0) { 1427 printf("%s: could not read EEPROM: %s\n", 1428 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1429 } 1430} 1431 1432Static uint32_t 1433rum_read(struct rum_softc *sc, uint16_t reg) 1434{ 1435 uint32_t val; 1436 1437 rum_read_multi(sc, reg, &val, sizeof val); 1438 1439 return le32toh(val); 1440} 1441 1442Static void 1443rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1444{ 1445 usb_device_request_t req; 1446 usbd_status error; 1447 1448 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1449 req.bRequest = RT2573_READ_MULTI_MAC; 1450 USETW(req.wValue, 0); 1451 USETW(req.wIndex, reg); 1452 USETW(req.wLength, len); 1453 1454 error = usbd_do_request(sc->sc_udev, &req, buf); 1455 if (error != 0) { 1456 printf("%s: could not multi read MAC register: %s\n", 1457 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1458 } 1459} 1460 1461Static void 1462rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1463{ 1464 uint32_t tmp = htole32(val); 1465 1466 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1467} 1468 1469Static void 1470rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1471{ 1472 usb_device_request_t req; 1473 usbd_status error; 1474 1475 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1476 req.bRequest = RT2573_WRITE_MULTI_MAC; 1477 USETW(req.wValue, 0); 1478 USETW(req.wIndex, reg); 1479 USETW(req.wLength, len); 1480 1481 error = usbd_do_request(sc->sc_udev, &req, buf); 1482 if (error != 0) { 1483 printf("%s: could not multi write MAC register: %s\n", 1484 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1485 } 1486} 1487 1488Static void 1489rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1490{ 1491 uint32_t tmp; 1492 int ntries; 1493 1494 for (ntries = 0; ntries < 5; ntries++) { 1495 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1496 break; 1497 } 1498 if (ntries == 5) { 1499 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1500 return; 1501 } 1502 1503 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1504 rum_write(sc, RT2573_PHY_CSR3, tmp); 1505} 1506 1507Static uint8_t 1508rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1509{ 1510 uint32_t val; 1511 int ntries; 1512 1513 for (ntries = 0; ntries < 5; ntries++) { 1514 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1515 break; 1516 } 1517 if (ntries == 5) { 1518 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1519 return 0; 1520 } 1521 1522 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1523 rum_write(sc, RT2573_PHY_CSR3, val); 1524 1525 for (ntries = 0; ntries < 100; ntries++) { 1526 val = rum_read(sc, RT2573_PHY_CSR3); 1527 if (!(val & RT2573_BBP_BUSY)) 1528 return val & 0xff; 1529 DELAY(1); 1530 } 1531 1532 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1533 return 0; 1534} 1535 1536Static void 1537rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1538{ 1539 uint32_t tmp; 1540 int ntries; 1541 1542 for (ntries = 0; ntries < 5; ntries++) { 1543 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1544 break; 1545 } 1546 if (ntries == 5) { 1547 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1548 return; 1549 } 1550 1551 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1552 (reg & 3); 1553 rum_write(sc, RT2573_PHY_CSR4, tmp); 1554 1555 /* remember last written value in sc */ 1556 sc->rf_regs[reg] = val; 1557 1558 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1559} 1560 1561Static void 1562rum_select_antenna(struct rum_softc *sc) 1563{ 1564 uint8_t bbp4, bbp77; 1565 uint32_t tmp; 1566 1567 bbp4 = rum_bbp_read(sc, 4); 1568 bbp77 = rum_bbp_read(sc, 77); 1569 1570 /* TBD */ 1571 1572 /* make sure Rx is disabled before switching antenna */ 1573 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1574 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1575 1576 rum_bbp_write(sc, 4, bbp4); 1577 rum_bbp_write(sc, 77, bbp77); 1578 1579 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1580} 1581 1582/* 1583 * Enable multi-rate retries for frames sent at OFDM rates. 1584 * In 802.11b/g mode, allow fallback to CCK rates. 1585 */ 1586Static void 1587rum_enable_mrr(struct rum_softc *sc) 1588{ 1589 struct ieee80211com *ic = &sc->sc_ic; 1590 uint32_t tmp; 1591 1592 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1593 1594 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1595 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1596 tmp |= RT2573_MRR_CCK_FALLBACK; 1597 tmp |= RT2573_MRR_ENABLED; 1598 1599 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1600} 1601 1602Static void 1603rum_set_txpreamble(struct rum_softc *sc) 1604{ 1605 uint32_t tmp; 1606 1607 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1608 1609 tmp &= ~RT2573_SHORT_PREAMBLE; 1610 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1611 tmp |= RT2573_SHORT_PREAMBLE; 1612 1613 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1614} 1615 1616Static void 1617rum_set_basicrates(struct rum_softc *sc) 1618{ 1619 struct ieee80211com *ic = &sc->sc_ic; 1620 1621 /* update basic rate set */ 1622 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1623 /* 11b basic rates: 1, 2Mbps */ 1624 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1625 } else if (ic->ic_curmode == IEEE80211_MODE_11A) { 1626 /* 11a basic rates: 6, 12, 24Mbps */ 1627 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1628 } else { 1629 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1630 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1631 } 1632} 1633 1634/* 1635 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1636 * driver. 1637 */ 1638Static void 1639rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1640{ 1641 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1642 uint32_t tmp; 1643 1644 /* update all BBP registers that depend on the band */ 1645 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1646 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1647 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1648 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1649 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1650 } 1651 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1652 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1653 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1654 } 1655 1656 sc->bbp17 = bbp17; 1657 rum_bbp_write(sc, 17, bbp17); 1658 rum_bbp_write(sc, 96, bbp96); 1659 rum_bbp_write(sc, 104, bbp104); 1660 1661 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1662 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1663 rum_bbp_write(sc, 75, 0x80); 1664 rum_bbp_write(sc, 86, 0x80); 1665 rum_bbp_write(sc, 88, 0x80); 1666 } 1667 1668 rum_bbp_write(sc, 35, bbp35); 1669 rum_bbp_write(sc, 97, bbp97); 1670 rum_bbp_write(sc, 98, bbp98); 1671 1672 tmp = rum_read(sc, RT2573_PHY_CSR0); 1673 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1674 if (IEEE80211_IS_CHAN_2GHZ(c)) 1675 tmp |= RT2573_PA_PE_2GHZ; 1676 else 1677 tmp |= RT2573_PA_PE_5GHZ; 1678 rum_write(sc, RT2573_PHY_CSR0, tmp); 1679 1680 /* 802.11a uses a 16 microseconds short interframe space */ 1681 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1682} 1683 1684Static void 1685rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1686{ 1687 struct ieee80211com *ic = &sc->sc_ic; 1688 const struct rfprog *rfprog; 1689 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1690 int8_t power; 1691 u_int i, chan; 1692 1693 chan = ieee80211_chan2ieee(ic, c); 1694 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1695 return; 1696 1697 /* select the appropriate RF settings based on what EEPROM says */ 1698 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1699 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1700 1701 /* find the settings for this channel (we know it exists) */ 1702 for (i = 0; rfprog[i].chan != chan; i++); 1703 1704 power = sc->txpow[i]; 1705 if (power < 0) { 1706 bbp94 += power; 1707 power = 0; 1708 } else if (power > 31) { 1709 bbp94 += power - 31; 1710 power = 31; 1711 } 1712 1713 /* 1714 * If we are switching from the 2GHz band to the 5GHz band or 1715 * vice-versa, BBP registers need to be reprogrammed. 1716 */ 1717 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1718 rum_select_band(sc, c); 1719 rum_select_antenna(sc); 1720 } 1721 ic->ic_curchan = c; 1722 1723 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1724 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1725 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1726 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1727 1728 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1729 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1730 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1731 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1732 1733 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1734 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1735 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1736 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1737 1738 DELAY(10); 1739 1740 /* enable smart mode for MIMO-capable RFs */ 1741 bbp3 = rum_bbp_read(sc, 3); 1742 1743 bbp3 &= ~RT2573_SMART_MODE; 1744 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1745 bbp3 |= RT2573_SMART_MODE; 1746 1747 rum_bbp_write(sc, 3, bbp3); 1748 1749 if (bbp94 != RT2573_BBPR94_DEFAULT) 1750 rum_bbp_write(sc, 94, bbp94); 1751} 1752 1753/* 1754 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1755 * and HostAP operating modes. 1756 */ 1757Static void 1758rum_enable_tsf_sync(struct rum_softc *sc) 1759{ 1760 struct ieee80211com *ic = &sc->sc_ic; 1761 uint32_t tmp; 1762 1763 if (ic->ic_opmode != IEEE80211_M_STA) { 1764 /* 1765 * Change default 16ms TBTT adjustment to 8ms. 1766 * Must be done before enabling beacon generation. 1767 */ 1768 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1769 } 1770 1771 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1772 1773 /* set beacon interval (in 1/16ms unit) */ 1774 tmp |= ic->ic_bss->ni_intval * 16; 1775 1776 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1777 if (ic->ic_opmode == IEEE80211_M_STA) 1778 tmp |= RT2573_TSF_MODE(1); 1779 else 1780 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1781 1782 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1783} 1784 1785Static void 1786rum_update_slot(struct rum_softc *sc) 1787{ 1788 struct ieee80211com *ic = &sc->sc_ic; 1789 uint8_t slottime; 1790 uint32_t tmp; 1791 1792 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1793 1794 tmp = rum_read(sc, RT2573_MAC_CSR9); 1795 tmp = (tmp & ~0xff) | slottime; 1796 rum_write(sc, RT2573_MAC_CSR9, tmp); 1797 1798 DPRINTF(("setting slot time to %uus\n", slottime)); 1799} 1800 1801Static void 1802rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1803{ 1804 uint32_t tmp; 1805 1806 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1807 rum_write(sc, RT2573_MAC_CSR4, tmp); 1808 1809 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1810 rum_write(sc, RT2573_MAC_CSR5, tmp); 1811} 1812 1813Static void 1814rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1815{ 1816 uint32_t tmp; 1817 1818 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1819 rum_write(sc, RT2573_MAC_CSR2, tmp); 1820 1821 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1822 rum_write(sc, RT2573_MAC_CSR3, tmp); 1823} 1824 1825Static void 1826rum_update_promisc(struct rum_softc *sc) 1827{ 1828 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1829 uint32_t tmp; 1830 1831 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1832 1833 tmp &= ~RT2573_DROP_NOT_TO_ME; 1834 if (!(ifp->if_flags & IFF_PROMISC)) 1835 tmp |= RT2573_DROP_NOT_TO_ME; 1836 1837 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1838 1839 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1840 "entering" : "leaving")); 1841} 1842 1843Static const char * 1844rum_get_rf(int rev) 1845{ 1846 switch (rev) { 1847 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1848 case RT2573_RF_2528: return "RT2528"; 1849 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1850 case RT2573_RF_5226: return "RT5226"; 1851 default: return "unknown"; 1852 } 1853} 1854 1855Static void 1856rum_read_eeprom(struct rum_softc *sc) 1857{ 1858 struct ieee80211com *ic = &sc->sc_ic; 1859 uint16_t val; 1860#ifdef RUM_DEBUG 1861 int i; 1862#endif 1863 1864 /* read MAC/BBP type */ 1865 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1866 sc->macbbp_rev = le16toh(val); 1867 1868 /* read MAC address */ 1869 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1870 1871 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1872 val = le16toh(val); 1873 sc->rf_rev = (val >> 11) & 0x1f; 1874 sc->hw_radio = (val >> 10) & 0x1; 1875 sc->rx_ant = (val >> 4) & 0x3; 1876 sc->tx_ant = (val >> 2) & 0x3; 1877 sc->nb_ant = val & 0x3; 1878 1879 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1880 1881 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1882 val = le16toh(val); 1883 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1884 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1885 1886 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1887 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1888 1889 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1890 val = le16toh(val); 1891 if ((val & 0xff) != 0xff) 1892 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1893 1894 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1895 val = le16toh(val); 1896 if ((val & 0xff) != 0xff) 1897 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1898 1899 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1900 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1901 1902 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1903 val = le16toh(val); 1904 if ((val & 0xff) != 0xff) 1905 sc->rffreq = val & 0xff; 1906 1907 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1908 1909 /* read Tx power for all a/b/g channels */ 1910 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1911 /* XXX default Tx power for 802.11a channels */ 1912 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1913#ifdef RUM_DEBUG 1914 for (i = 0; i < 14; i++) 1915 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1916#endif 1917 1918 /* read default values for BBP registers */ 1919 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1920#ifdef RUM_DEBUG 1921 for (i = 0; i < 14; i++) { 1922 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1923 continue; 1924 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1925 sc->bbp_prom[i].val)); 1926 } 1927#endif 1928} 1929 1930Static int 1931rum_bbp_init(struct rum_softc *sc) 1932{ 1933#define N(a) (sizeof (a) / sizeof ((a)[0])) 1934 int i, ntries; 1935 uint8_t val; 1936 1937 /* wait for BBP to be ready */ 1938 for (ntries = 0; ntries < 100; ntries++) { 1939 val = rum_bbp_read(sc, 0); 1940 if (val != 0 && val != 0xff) 1941 break; 1942 DELAY(1000); 1943 } 1944 if (ntries == 100) { 1945 printf("%s: timeout waiting for BBP\n", 1946 USBDEVNAME(sc->sc_dev)); 1947 return EIO; 1948 } 1949 1950 /* initialize BBP registers to default values */ 1951 for (i = 0; i < N(rum_def_bbp); i++) 1952 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1953 1954 /* write vendor-specific BBP values (from EEPROM) */ 1955 for (i = 0; i < 16; i++) { 1956 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1957 continue; 1958 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1959 } 1960 1961 return 0; 1962#undef N 1963} 1964 1965Static int 1966rum_init(struct ifnet *ifp) 1967{ 1968#define N(a) (sizeof (a) / sizeof ((a)[0])) 1969 struct rum_softc *sc = ifp->if_softc; 1970 struct ieee80211com *ic = &sc->sc_ic; 1971 struct rum_rx_data *data; 1972 uint32_t tmp; 1973 usbd_status error = 0; 1974 int i, ntries; 1975 1976 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1977 if (rum_attachhook(sc)) 1978 goto fail; 1979 } 1980 1981 rum_stop(ifp, 0); 1982 1983 /* initialize MAC registers to default values */ 1984 for (i = 0; i < N(rum_def_mac); i++) 1985 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1986 1987 /* set host ready */ 1988 rum_write(sc, RT2573_MAC_CSR1, 3); 1989 rum_write(sc, RT2573_MAC_CSR1, 0); 1990 1991 /* wait for BBP/RF to wakeup */ 1992 for (ntries = 0; ntries < 1000; ntries++) { 1993 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1994 break; 1995 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1996 DELAY(1000); 1997 } 1998 if (ntries == 1000) { 1999 printf("%s: timeout waiting for BBP/RF to wakeup\n", 2000 USBDEVNAME(sc->sc_dev)); 2001 goto fail; 2002 } 2003 2004 if ((error = rum_bbp_init(sc)) != 0) 2005 goto fail; 2006 2007 /* select default channel */ 2008 rum_select_band(sc, ic->ic_curchan); 2009 rum_select_antenna(sc); 2010 rum_set_chan(sc, ic->ic_curchan); 2011 2012 /* clear STA registers */ 2013 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2014 2015 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2016 rum_set_macaddr(sc, ic->ic_myaddr); 2017 2018 /* initialize ASIC */ 2019 rum_write(sc, RT2573_MAC_CSR1, 4); 2020 2021 /* 2022 * Allocate xfer for AMRR statistics requests. 2023 */ 2024 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 2025 if (sc->amrr_xfer == NULL) { 2026 printf("%s: could not allocate AMRR xfer\n", 2027 USBDEVNAME(sc->sc_dev)); 2028 goto fail; 2029 } 2030 2031 /* 2032 * Open Tx and Rx USB bulk pipes. 2033 */ 2034 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 2035 &sc->sc_tx_pipeh); 2036 if (error != 0) { 2037 printf("%s: could not open Tx pipe: %s\n", 2038 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2039 goto fail; 2040 } 2041 2042 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2043 &sc->sc_rx_pipeh); 2044 if (error != 0) { 2045 printf("%s: could not open Rx pipe: %s\n", 2046 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2047 goto fail; 2048 } 2049 2050 /* 2051 * Allocate Tx and Rx xfer queues. 2052 */ 2053 error = rum_alloc_tx_list(sc); 2054 if (error != 0) { 2055 printf("%s: could not allocate Tx list\n", 2056 USBDEVNAME(sc->sc_dev)); 2057 goto fail; 2058 } 2059 2060 error = rum_alloc_rx_list(sc); 2061 if (error != 0) { 2062 printf("%s: could not allocate Rx list\n", 2063 USBDEVNAME(sc->sc_dev)); 2064 goto fail; 2065 } 2066 2067 /* 2068 * Start up the receive pipe. 2069 */ 2070 for (i = 0; i < RUM_RX_LIST_COUNT; i++) { 2071 data = &sc->rx_data[i]; 2072 2073 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2074 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2075 error = usbd_transfer(data->xfer); 2076 if (error != USBD_NORMAL_COMPLETION && 2077 error != USBD_IN_PROGRESS) { 2078 printf("%s: could not queue Rx transfer\n", 2079 USBDEVNAME(sc->sc_dev)); 2080 goto fail; 2081 } 2082 } 2083 2084 /* update Rx filter */ 2085 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2086 2087 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2088 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2089 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2090 RT2573_DROP_ACKCTS; 2091 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2092 tmp |= RT2573_DROP_TODS; 2093 if (!(ifp->if_flags & IFF_PROMISC)) 2094 tmp |= RT2573_DROP_NOT_TO_ME; 2095 } 2096 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2097 2098 ifp->if_flags &= ~IFF_OACTIVE; 2099 ifp->if_flags |= IFF_RUNNING; 2100 2101 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2102 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2103 else 2104 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2105 2106 return 0; 2107 2108fail: rum_stop(ifp, 1); 2109 return error; 2110#undef N 2111} 2112 2113Static void 2114rum_stop(struct ifnet *ifp, int disable) 2115{ 2116 struct rum_softc *sc = ifp->if_softc; 2117 struct ieee80211com *ic = &sc->sc_ic; 2118 uint32_t tmp; 2119 2120 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2121 2122 sc->sc_tx_timer = 0; 2123 ifp->if_timer = 0; 2124 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2125 2126 /* disable Rx */ 2127 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2128 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2129 2130 /* reset ASIC */ 2131 rum_write(sc, RT2573_MAC_CSR1, 3); 2132 rum_write(sc, RT2573_MAC_CSR1, 0); 2133 2134 if (sc->sc_rx_pipeh != NULL) { 2135 usbd_abort_pipe(sc->sc_rx_pipeh); 2136 usbd_close_pipe(sc->sc_rx_pipeh); 2137 sc->sc_rx_pipeh = NULL; 2138 } 2139 2140 if (sc->sc_tx_pipeh != NULL) { 2141 usbd_abort_pipe(sc->sc_tx_pipeh); 2142 usbd_close_pipe(sc->sc_tx_pipeh); 2143 sc->sc_tx_pipeh = NULL; 2144 } 2145 2146 rum_free_rx_list(sc); 2147 rum_free_tx_list(sc); 2148} 2149 2150Static int 2151rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2152{ 2153 usb_device_request_t req; 2154 uint16_t reg = RT2573_MCU_CODE_BASE; 2155 usbd_status error; 2156 2157 /* copy firmware image into NIC */ 2158 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2159 rum_write(sc, reg, UGETDW(ucode)); 2160 2161 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2162 req.bRequest = RT2573_MCU_CNTL; 2163 USETW(req.wValue, RT2573_MCU_RUN); 2164 USETW(req.wIndex, 0); 2165 USETW(req.wLength, 0); 2166 2167 error = usbd_do_request(sc->sc_udev, &req, NULL); 2168 if (error != 0) { 2169 printf("%s: could not run firmware: %s\n", 2170 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2171 } 2172 return error; 2173} 2174 2175Static int 2176rum_prepare_beacon(struct rum_softc *sc) 2177{ 2178 struct ieee80211com *ic = &sc->sc_ic; 2179 struct rum_tx_desc desc; 2180 struct mbuf *m0; 2181 int rate; 2182 2183 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2184 if (m0 == NULL) { 2185 aprint_error_dev(sc->sc_dev, 2186 "could not allocate beacon frame\n"); 2187 return ENOBUFS; 2188 } 2189 2190 /* send beacons at the lowest available rate */ 2191 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2192 2193 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2194 m0->m_pkthdr.len, rate); 2195 2196 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2197 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2198 2199 /* copy beacon header and payload into NIC memory */ 2200 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2201 m0->m_pkthdr.len); 2202 2203 m_freem(m0); 2204 2205 return 0; 2206} 2207 2208Static void 2209rum_newassoc(struct ieee80211_node *ni, int isnew) 2210{ 2211 /* start with lowest Tx rate */ 2212 ni->ni_txrate = 0; 2213} 2214 2215Static void 2216rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2217{ 2218 int i; 2219 2220 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2221 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2222 2223 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2224 2225 /* set rate to some reasonable initial value */ 2226 for (i = ni->ni_rates.rs_nrates - 1; 2227 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2228 i--); 2229 ni->ni_txrate = i; 2230 2231 usb_callout(sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2232} 2233 2234Static void 2235rum_amrr_timeout(void *arg) 2236{ 2237 struct rum_softc *sc = arg; 2238 usb_device_request_t req; 2239 2240 /* 2241 * Asynchronously read statistic registers (cleared by read). 2242 */ 2243 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2244 req.bRequest = RT2573_READ_MULTI_MAC; 2245 USETW(req.wValue, 0); 2246 USETW(req.wIndex, RT2573_STA_CSR0); 2247 USETW(req.wLength, sizeof sc->sta); 2248 2249 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2250 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2251 rum_amrr_update); 2252 (void)usbd_transfer(sc->amrr_xfer); 2253} 2254 2255Static void 2256rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2257 usbd_status status) 2258{ 2259 struct rum_softc *sc = (struct rum_softc *)priv; 2260 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2261 2262 if (status != USBD_NORMAL_COMPLETION) { 2263 printf("%s: could not retrieve Tx statistics - cancelling " 2264 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2265 return; 2266 } 2267 2268 /* count TX retry-fail as Tx errors */ 2269 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2270 2271 sc->amn.amn_retrycnt = 2272 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2273 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2274 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2275 2276 sc->amn.amn_txcnt = 2277 sc->amn.amn_retrycnt + 2278 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2279 2280 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2281 2282 usb_callout(sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2283} 2284 2285int 2286rum_activate(device_ptr_t self, enum devact act) 2287{ 2288 switch (act) { 2289 case DVACT_ACTIVATE: 2290 return EOPNOTSUPP; 2291 2292 case DVACT_DEACTIVATE: 2293 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2294 break; 2295 } 2296 2297 return 0; 2298} 2299