root/dev/usb/if_ral.c

DEFINITIONS

1. ural_match
2. ural_attach
3. ural_detach
4. ural_alloc_tx_list
5. ural_free_tx_list
6. ural_alloc_rx_list
7. ural_free_rx_list
8. ural_media_change
9. ural_next_scan
10. ural_task
11. ural_newstate
12. ural_txeof
13. ural_rxeof
14. ural_rxrate
15. ural_ack_rate
16. ural_txtime
17. ural_plcp_signal
18. ural_setup_tx_desc
19. ural_tx_bcn
20. ural_tx_data
21. ural_start
22. ural_watchdog
23. ural_ioctl
24. ural_eeprom_read
25. ural_read
26. ural_read_multi
27. ural_write
28. ural_write_multi
29. ural_bbp_write
30. ural_bbp_read
31. ural_rf_write
32. ural_set_chan
33. ural_disable_rf_tune
34. ural_enable_tsf_sync
35. ural_update_slot
36. ural_set_txpreamble
37. ural_set_basicrates
38. ural_set_bssid
39. ural_set_macaddr
40. ural_update_promisc
41. ural_get_rf
42. ural_read_eeprom
43. ural_bbp_init
44. ural_set_txantenna
45. ural_set_rxantenna
46. ural_init
47. ural_stop
48. ural_newassoc
49. ural_amrr_start
50. ural_amrr_timeout
51. ural_amrr_update
52. ural_activate

    1 /*      $OpenBSD: if_ral.c,v 1.100 2007/07/18 18:10:31 damien Exp $     */
    3 /*-
    4  * Copyright (c) 2005, 2006
    5  *      Damien Bergamini <damien.bergamini@free.fr>
    6  *
    7  * Permission to use, copy, modify, and distribute this software for any
    8  * purpose with or without fee is hereby granted, provided that the above
    9  * copyright notice and this permission notice appear in all copies.
   10  *
   11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   18  */
   20 /*-
   21  * Ralink Technology RT2500USB chipset driver
   22  * http://www.ralinktech.com.tw/
   23  */
   25 #include "bpfilter.h"
   27 #include <sys/param.h>
   28 #include <sys/sockio.h>
   29 #include <sys/sysctl.h>
   30 #include <sys/mbuf.h>
   31 #include <sys/kernel.h>
   32 #include <sys/socket.h>
   33 #include <sys/systm.h>
   34 #include <sys/malloc.h>
   35 #include <sys/timeout.h>
   36 #include <sys/conf.h>
   37 #include <sys/device.h>
   39 #include <machine/bus.h>
   40 #include <machine/endian.h>
   41 #include <machine/intr.h>
   43 #if NBPFILTER > 0
   44 #include <net/bpf.h>
   45 #endif
   46 #include <net/if.h>
   47 #include <net/if_arp.h>
   48 #include <net/if_dl.h>
   49 #include <net/if_media.h>
   50 #include <net/if_types.h>
   52 #include <netinet/in.h>
   53 #include <netinet/in_systm.h>
   54 #include <netinet/in_var.h>
   55 #include <netinet/if_ether.h>
   56 #include <netinet/ip.h>
   58 #include <net80211/ieee80211_var.h>
   59 #include <net80211/ieee80211_amrr.h>
   60 #include <net80211/ieee80211_radiotap.h>
   62 #include <dev/usb/usb.h>
   63 #include <dev/usb/usbdi.h>
   64 #include <dev/usb/usbdi_util.h>
   65 #include <dev/usb/usbdevs.h>
   67 #include <dev/usb/if_ralreg.h>
   68 #include <dev/usb/if_ralvar.h>
   70 #ifdef USB_DEBUG
   71 #define URAL_DEBUG
   72 #endif
   74 #ifdef URAL_DEBUG
   75 #define DPRINTF(x)      do { if (ural_debug) printf x; } while (0)
   76 #define DPRINTFN(n, x)  do { if (ural_debug >= (n)) printf x; } while (0)
   77 int ural_debug = 0;
   78 #else
   79 #define DPRINTF(x)
   80 #define DPRINTFN(n, x)
   81 #endif
   83 /* various supported device vendors/products */
   84 static const struct usb_devno ural_devs[] = {
   85         { USB_VENDOR_ASUS,              USB_PRODUCT_ASUS_RT2570 },
   86         { USB_VENDOR_ASUS,              USB_PRODUCT_ASUS_RT2570_2 },
   87         { USB_VENDOR_BELKIN,            USB_PRODUCT_BELKIN_F5D7050 },
   88         { USB_VENDOR_CISCOLINKSYS,      USB_PRODUCT_CISCOLINKSYS_WUSB54G },
   89         { USB_VENDOR_CISCOLINKSYS,      USB_PRODUCT_CISCOLINKSYS_WUSB54GP },
   90         { USB_VENDOR_CISCOLINKSYS,      USB_PRODUCT_CISCOLINKSYS_HU200TS },
   91         { USB_VENDOR_CONCEPTRONIC2,     USB_PRODUCT_CONCEPTRONIC2_C54RU },
   92         { USB_VENDOR_DLINK,             USB_PRODUCT_DLINK_RT2570 },
   93         { USB_VENDOR_GIGABYTE,          USB_PRODUCT_GIGABYTE_GNWBKG },
   94         { USB_VENDOR_GUILLEMOT,         USB_PRODUCT_GUILLEMOT_HWGUSB254 },
   95         { USB_VENDOR_MELCO,             USB_PRODUCT_MELCO_KG54 },
   96         { USB_VENDOR_MELCO,             USB_PRODUCT_MELCO_KG54AI },
   97         { USB_VENDOR_MELCO,             USB_PRODUCT_MELCO_KG54YB },
   98         { USB_VENDOR_MELCO,             USB_PRODUCT_MELCO_NINWIFI },
   99         { USB_VENDOR_MSI,               USB_PRODUCT_MSI_RT2570 },
  100         { USB_VENDOR_MSI,               USB_PRODUCT_MSI_RT2570_2 },
  101         { USB_VENDOR_MSI,               USB_PRODUCT_MSI_RT2570_3 },
  102         { USB_VENDOR_NOVATECH,          USB_PRODUCT_NOVATECH_NV902W },
  103         { USB_VENDOR_RALINK,            USB_PRODUCT_RALINK_RT2570 },
  104         { USB_VENDOR_RALINK,            USB_PRODUCT_RALINK_RT2570_2 },
  105         { USB_VENDOR_RALINK,            USB_PRODUCT_RALINK_RT2570_3 },
  106         { USB_VENDOR_SPHAIRON,          USB_PRODUCT_SPHAIRON_UB801R },
  107         { USB_VENDOR_SURECOM,           USB_PRODUCT_SURECOM_RT2570 },
  108         { USB_VENDOR_VTECH,             USB_PRODUCT_VTECH_RT2570 },
  109         { USB_VENDOR_ZINWELL,           USB_PRODUCT_ZINWELL_RT2570 }
  110 };
  112 int             ural_alloc_tx_list(struct ural_softc *);
  113 void            ural_free_tx_list(struct ural_softc *);
  114 int             ural_alloc_rx_list(struct ural_softc *);
  115 void            ural_free_rx_list(struct ural_softc *);
  116 int             ural_media_change(struct ifnet *);
  117 void            ural_next_scan(void *);
  118 void            ural_task(void *);
  119 int             ural_newstate(struct ieee80211com *, enum ieee80211_state,
  120                     int);
  121 void            ural_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
  122 void            ural_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
  123 #if NBPFILTER > 0
uint8_t         ural_rxrate(const struct ural_rx_desc *);
  125 #endif
  126 int             ural_ack_rate(struct ieee80211com *, int);
uint16_t        ural_txtime(int, int, uint32_t);
uint8_t         ural_plcp_signal(int);
  129 void            ural_setup_tx_desc(struct ural_softc *, struct ural_tx_desc *,
uint32_t, int, int);
  131 int             ural_tx_bcn(struct ural_softc *, struct mbuf *,
  132                     struct ieee80211_node *);
  133 int             ural_tx_data(struct ural_softc *, struct mbuf *,
  134                     struct ieee80211_node *);
  135 void            ural_start(struct ifnet *);
  136 void            ural_watchdog(struct ifnet *);
  137 int             ural_ioctl(struct ifnet *, u_long, caddr_t);
  138 void            ural_eeprom_read(struct ural_softc *, uint16_t, void *, int);
uint16_t        ural_read(struct ural_softc *, uint16_t);
  140 void            ural_read_multi(struct ural_softc *, uint16_t, void *, int);
  141 void            ural_write(struct ural_softc *, uint16_t, uint16_t);
  142 void            ural_write_multi(struct ural_softc *, uint16_t, void *, int);
  143 void            ural_bbp_write(struct ural_softc *, uint8_t, uint8_t);
uint8_t         ural_bbp_read(struct ural_softc *, uint8_t);
  145 void            ural_rf_write(struct ural_softc *, uint8_t, uint32_t);
  146 void            ural_set_chan(struct ural_softc *, struct ieee80211_channel *);
  147 void            ural_disable_rf_tune(struct ural_softc *);
  148 void            ural_enable_tsf_sync(struct ural_softc *);
  149 void            ural_update_slot(struct ural_softc *);
  150 void            ural_set_txpreamble(struct ural_softc *);
  151 void            ural_set_basicrates(struct ural_softc *);
  152 void            ural_set_bssid(struct ural_softc *, const uint8_t *);
  153 void            ural_set_macaddr(struct ural_softc *, const uint8_t *);
  154 void            ural_update_promisc(struct ural_softc *);
  155 const char      *ural_get_rf(int);
  156 void            ural_read_eeprom(struct ural_softc *);
  157 int             ural_bbp_init(struct ural_softc *);
  158 void            ural_set_txantenna(struct ural_softc *, int);
  159 void            ural_set_rxantenna(struct ural_softc *, int);
  160 int             ural_init(struct ifnet *);
  161 void            ural_stop(struct ifnet *, int);
  162 void            ural_newassoc(struct ieee80211com *, struct ieee80211_node *,
  163                     int);
  164 void            ural_amrr_start(struct ural_softc *, struct ieee80211_node *);
  165 void            ural_amrr_timeout(void *);
  166 void            ural_amrr_update(usbd_xfer_handle, usbd_private_handle,
usbd_status status);
  169 static const struct {
uint16_t        reg;
uint16_t        val;
  172 } ural_def_mac[] = {
RAL_DEF_MAC
  174 };
  176 static const struct {
uint8_t reg;
uint8_t val;
  179 } ural_def_bbp[] = {
RAL_DEF_BBP
  181 };
  183 static const uint32_t ural_rf2522_r2[] =    RAL_RF2522_R2;
  184 static const uint32_t ural_rf2523_r2[] =    RAL_RF2523_R2;
  185 static const uint32_t ural_rf2524_r2[] =    RAL_RF2524_R2;
  186 static const uint32_t ural_rf2525_r2[] =    RAL_RF2525_R2;
  187 static const uint32_t ural_rf2525_hi_r2[] = RAL_RF2525_HI_R2;
  188 static const uint32_t ural_rf2525e_r2[] =   RAL_RF2525E_R2;
  189 static const uint32_t ural_rf2526_hi_r2[] = RAL_RF2526_HI_R2;
  190 static const uint32_t ural_rf2526_r2[] =    RAL_RF2526_R2;
  192 int ural_match(struct device *, void *, void *); 
  193 void ural_attach(struct device *, struct device *, void *); 
  194 int ural_detach(struct device *, int); 
  195 int ural_activate(struct device *, enum devact); 
  197 struct cfdriver ural_cd = { 
NULL, "ural", DV_IFNET 
  199 }; 
  201 const struct cfattach ural_ca = { 
  202         sizeof(struct ural_softc), 
ural_match, 
ural_attach, 
ural_detach, 
ural_activate, 
  207 };
  209 int
ural_match(struct device *parent, void *match, void *aux)
  211 {
  212         struct usb_attach_arg *uaa = aux;
  214         if (uaa->iface != NULL)
  215                 return UMATCH_NONE;
  217         return (usb_lookup(ural_devs, uaa->vendor, uaa->product) != NULL) ?
UMATCH_VENDOR_PRODUCT : UMATCH_NONE;
  219 }
  221 void
ural_attach(struct device *parent, struct device *self, void *aux)
  223 {
  224         struct ural_softc *sc = (struct ural_softc *)self;
  225         struct usb_attach_arg *uaa = aux;
  226         struct ieee80211com *ic = &sc->sc_ic;
  227         struct ifnet *ifp = &ic->ic_if;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
usbd_status error;
  231         char *devinfop;
  232         int i;
sc->sc_udev = uaa->device;
devinfop = usbd_devinfo_alloc(uaa->device, 0);
printf("\n%s: %s\n", sc->sc_dev.dv_xname, devinfop);
usbd_devinfo_free(devinfop);
  240         if (usbd_set_config_no(sc->sc_udev, RAL_CONFIG_NO, 0) != 0) {
printf("%s: could not set configuration no\n",
sc->sc_dev.dv_xname);
  243                 return;
  244         }
  246         /* get the first interface handle */
error = usbd_device2interface_handle(sc->sc_udev, RAL_IFACE_INDEX,
  248             &sc->sc_iface);
  249         if (error != 0) {
printf("%s: could not get interface handle\n",
sc->sc_dev.dv_xname);
  252                 return;
  253         }
  255         /*
  256          * Find endpoints.
  257          */
id = usbd_get_interface_descriptor(sc->sc_iface);
sc->sc_rx_no = sc->sc_tx_no = -1;
  261         for (i = 0; i < id->bNumEndpoints; i++) {
ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
  263                 if (ed == NULL) {
printf("%s: no endpoint descriptor for iface %d\n",
sc->sc_dev.dv_xname, i);
  266                         return;
  267                 }
  269                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK)
sc->sc_rx_no = ed->bEndpointAddress;
  272                 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK)
sc->sc_tx_no = ed->bEndpointAddress;
  275         }
  276         if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) {
printf("%s: missing endpoint\n", sc->sc_dev.dv_xname);
  278                 return;
  279         }
usb_init_task(&sc->sc_task, ural_task, sc);
timeout_set(&sc->scan_to, ural_next_scan, sc);
sc->amrr.amrr_min_success_threshold =  1;
sc->amrr.amrr_max_success_threshold = 10;
timeout_set(&sc->amrr_to, ural_amrr_timeout, sc);
  288         /* retrieve RT2570 rev. no */
sc->asic_rev = ural_read(sc, RAL_MAC_CSR0);
  291         /* retrieve MAC address and various other things from EEPROM */
ural_read_eeprom(sc);
printf("%s: MAC/BBP RT%04x (rev 0x%02x), RF %s, address %s\n",
sc->sc_dev.dv_xname, sc->macbbp_rev, sc->asic_rev,
ural_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr));
ic->ic_phytype = IEEE80211_T_OFDM;      /* not only, but not used */
ic->ic_opmode = IEEE80211_M_STA;        /* default to BSS mode */
ic->ic_state = IEEE80211_S_INIT;
  302         /* set device capabilities */
ic->ic_caps =
IEEE80211_C_IBSS |          /* IBSS mode supported */
IEEE80211_C_MONITOR |       /* monitor mode supported */
IEEE80211_C_HOSTAP |        /* HostAp mode supported */
IEEE80211_C_TXPMGT |        /* tx power management */
IEEE80211_C_SHPREAMBLE |    /* short preamble supported */
IEEE80211_C_SHSLOT |        /* short slot time supported */
IEEE80211_C_WEP;            /* s/w WEP */
  312         /* set supported .11b and .11g rates */
ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_std_rateset_11b;
ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_std_rateset_11g;
  316         /* set supported .11b and .11g channels (1 through 14) */
  317         for (i = 1; i <= 14; i++) {
ic->ic_channels[i].ic_freq =
ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
ic->ic_channels[i].ic_flags =
IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM |
IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
  323         }
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_init = ural_init;
ifp->if_ioctl = ural_ioctl;
ifp->if_start = ural_start;
ifp->if_watchdog = ural_watchdog;
IFQ_SET_READY(&ifp->if_snd);
memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ);
if_attach(ifp);
ieee80211_ifattach(ifp);
ic->ic_newassoc = ural_newassoc;
  338         /* override state transition machine */
sc->sc_newstate = ic->ic_newstate;
ic->ic_newstate = ural_newstate;
ieee80211_media_init(ifp, ural_media_change, ieee80211_media_status);
  343 #if NBPFILTER > 0
bpfattach(&sc->sc_drvbpf, ifp, DLT_IEEE802_11_RADIO,
  345             sizeof (struct ieee80211_frame) + 64);
sc->sc_rxtap_len = sizeof sc->sc_rxtapu;
sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
sc->sc_rxtap.wr_ihdr.it_present = htole32(RAL_RX_RADIOTAP_PRESENT);
sc->sc_txtap_len = sizeof sc->sc_txtapu;
sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
sc->sc_txtap.wt_ihdr.it_present = htole32(RAL_TX_RADIOTAP_PRESENT);
  354 #endif
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
  357             &sc->sc_dev);
  358 }
  360 int
ural_detach(struct device *self, int flags)
  362 {
  363         struct ural_softc *sc = (struct ural_softc *)self;
  364         struct ifnet *ifp = &sc->sc_ic.ic_if;
  365         int s;
s = splusb();
ieee80211_ifdetach(ifp);        /* free all nodes */
if_detach(ifp);
usb_rem_task(sc->sc_udev, &sc->sc_task);
timeout_del(&sc->scan_to);
timeout_del(&sc->amrr_to);
  376         if (sc->amrr_xfer != NULL) {
usbd_free_xfer(sc->amrr_xfer);
sc->amrr_xfer = NULL;
  379         }
  381         if (sc->sc_rx_pipeh != NULL) {
usbd_abort_pipe(sc->sc_rx_pipeh);
usbd_close_pipe(sc->sc_rx_pipeh);
  384         }
  386         if (sc->sc_tx_pipeh != NULL) {
usbd_abort_pipe(sc->sc_tx_pipeh);
usbd_close_pipe(sc->sc_tx_pipeh);
  389         }
ural_free_rx_list(sc);
ural_free_tx_list(sc);
splx(s);
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
  397             &sc->sc_dev);
  399         return 0;
  400 }
  402 int
ural_alloc_tx_list(struct ural_softc *sc)
  404 {
  405         int i, error;
sc->tx_cur = sc->tx_queued = 0;
  409         for (i = 0; i < RAL_TX_LIST_COUNT; i++) {
  410                 struct ural_tx_data *data = &sc->tx_data[i];
data->sc = sc;
data->xfer = usbd_alloc_xfer(sc->sc_udev);
  415                 if (data->xfer == NULL) {
printf("%s: could not allocate tx xfer\n",
sc->sc_dev.dv_xname);
error = ENOMEM;
  419                         goto fail;
  420                 }
data->buf = usbd_alloc_buffer(data->xfer,
RAL_TX_DESC_SIZE + IEEE80211_MAX_LEN);
  423                 if (data->buf == NULL) {
printf("%s: could not allocate tx buffer\n",
sc->sc_dev.dv_xname);
error = ENOMEM;
  427                         goto fail;
  428                 }
  429         }
  431         return 0;
fail:   ural_free_tx_list(sc);
  434         return error;
  435 }
  437 void
ural_free_tx_list(struct ural_softc *sc)
  439 {
  440         int i;
  442         for (i = 0; i < RAL_TX_LIST_COUNT; i++) {
  443                 struct ural_tx_data *data = &sc->tx_data[i];
  445                 if (data->xfer != NULL) {
usbd_free_xfer(data->xfer);
data->xfer = NULL;
  448                 }
  449                 /*
  450                  * The node has already been freed at that point so don't call
  451                  * ieee80211_release_node() here.
  452                  */
data->ni = NULL;
  454         }
  455 }
  457 int
ural_alloc_rx_list(struct ural_softc *sc)
  459 {
  460         int i, error;
  462         for (i = 0; i < RAL_RX_LIST_COUNT; i++) {
  463                 struct ural_rx_data *data = &sc->rx_data[i];
data->sc = sc;
data->xfer = usbd_alloc_xfer(sc->sc_udev);
  468                 if (data->xfer == NULL) {
printf("%s: could not allocate rx xfer\n",
sc->sc_dev.dv_xname);
error = ENOMEM;
  472                         goto fail;
  473                 }
  474                 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) {
printf("%s: could not allocate rx buffer\n",
sc->sc_dev.dv_xname);
error = ENOMEM;
  478                         goto fail;
  479                 }
MGETHDR(data->m, M_DONTWAIT, MT_DATA);
  482                 if (data->m == NULL) {
printf("%s: could not allocate rx mbuf\n",
sc->sc_dev.dv_xname);
error = ENOMEM;
  486                         goto fail;
  487                 }
MCLGET(data->m, M_DONTWAIT);
  489                 if (!(data->m->m_flags & M_EXT)) {
printf("%s: could not allocate rx mbuf cluster\n",
sc->sc_dev.dv_xname);
error = ENOMEM;
  493                         goto fail;
  494                 }
data->buf = mtod(data->m, uint8_t *);
  496         }
  498         return 0;
fail:   ural_free_tx_list(sc);
  501         return error;
  502 }
  504 void
ural_free_rx_list(struct ural_softc *sc)
  506 {
  507         int i;
  509         for (i = 0; i < RAL_RX_LIST_COUNT; i++) {
  510                 struct ural_rx_data *data = &sc->rx_data[i];
  512                 if (data->xfer != NULL) {
usbd_free_xfer(data->xfer);
data->xfer = NULL;
  515                 }
  516                 if (data->m != NULL) {
m_freem(data->m);
data->m = NULL;
  519                 }
  520         }
  521 }
  523 int
ural_media_change(struct ifnet *ifp)
  525 {
  526         int error;
error = ieee80211_media_change(ifp);
  529         if (error != ENETRESET)
  530                 return error;
  532         if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
ural_init(ifp);
  535         return 0;
  536 }
  538 /*
  539  * This function is called periodically (every 200ms) during scanning to
  540  * switch from one channel to another.
  541  */
  542 void
ural_next_scan(void *arg)
  544 {
  545         struct ural_softc *sc = arg;
  546         struct ieee80211com *ic = &sc->sc_ic;
  547         struct ifnet *ifp = &ic->ic_if;
  549         if (ic->ic_state == IEEE80211_S_SCAN)
ieee80211_next_scan(ifp);
  551 }
  553 void
ural_task(void *arg)
  555 {
  556         struct ural_softc *sc = arg;
  557         struct ieee80211com *ic = &sc->sc_ic;
  558         enum ieee80211_state ostate;
  559         struct ieee80211_node *ni;
  560         struct mbuf *m;
ostate = ic->ic_state;
  564         switch (sc->sc_state) {
  565         case IEEE80211_S_INIT:
  566                 if (ostate == IEEE80211_S_RUN) {
  567                         /* abort TSF synchronization */
ural_write(sc, RAL_TXRX_CSR19, 0);
  570                         /* force tx led to stop blinking */
ural_write(sc, RAL_MAC_CSR20, 0);
  572                 }
  573                 break;
  575         case IEEE80211_S_SCAN:
ural_set_chan(sc, ic->ic_bss->ni_chan);
timeout_add(&sc->scan_to, hz / 5);
  578                 break;
  580         case IEEE80211_S_AUTH:
ural_set_chan(sc, ic->ic_bss->ni_chan);
  582                 break;
  584         case IEEE80211_S_ASSOC:
ural_set_chan(sc, ic->ic_bss->ni_chan);
  586                 break;
  588         case IEEE80211_S_RUN:
ural_set_chan(sc, ic->ic_bss->ni_chan);
ni = ic->ic_bss;
  593                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
ural_update_slot(sc);
ural_set_txpreamble(sc);
ural_set_basicrates(sc);
ural_set_bssid(sc, ni->ni_bssid);
  598                 }
  600                 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
ic->ic_opmode == IEEE80211_M_IBSS) {
m = ieee80211_beacon_alloc(ic, ni);
  603                         if (m == NULL) {
printf("%s: could not allocate beacon\n",
sc->sc_dev.dv_xname);
  606                                 return;
  607                         }
  609                         if (ural_tx_bcn(sc, m, ni) != 0) {
m_freem(m);
printf("%s: could not transmit beacon\n",
sc->sc_dev.dv_xname);
  613                                 return;
  614                         }
  616                         /* beacon is no longer needed */
m_freem(m);
  618                 }
  620                 /* make tx led blink on tx (controlled by ASIC) */
ural_write(sc, RAL_MAC_CSR20, 1);
  623                 if (ic->ic_opmode != IEEE80211_M_MONITOR)
ural_enable_tsf_sync(sc);
  626                 if (ic->ic_opmode == IEEE80211_M_STA) {
  627                         /* fake a join to init the tx rate */
ural_newassoc(ic, ic->ic_bss, 1);
  630                         /* enable automatic rate control in STA mode */
  631                         if (ic->ic_fixed_rate == -1)
ural_amrr_start(sc, ic->ic_bss);
  633                 }
  635                 break;
  636         }
sc->sc_newstate(ic, sc->sc_state, sc->sc_arg);
  639 }
  641 int
ural_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
  643 {
  644         struct ural_softc *sc = ic->ic_if.if_softc;
usb_rem_task(sc->sc_udev, &sc->sc_task);
timeout_del(&sc->scan_to);
timeout_del(&sc->amrr_to);
  650         /* do it in a process context */
sc->sc_state = nstate;
sc->sc_arg = arg;
usb_add_task(sc->sc_udev, &sc->sc_task);
  654         return 0;
  655 }
  657 /* quickly determine if a given rate is CCK or OFDM */
  658 #define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
  660 #define RAL_ACK_SIZE    14      /* 10 + 4(FCS) */
  661 #define RAL_CTS_SIZE    14      /* 10 + 4(FCS) */
  663 #define RAL_SIFS                10      /* us */
  665 #define RAL_RXTX_TURNAROUND     5       /* us */
  667 void
ural_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
  669 {
  670         struct ural_tx_data *data = priv;
  671         struct ural_softc *sc = data->sc;
  672         struct ieee80211com *ic = &sc->sc_ic;
  673         struct ifnet *ifp = &ic->ic_if;
  674         int s;
  676         if (status != USBD_NORMAL_COMPLETION) {
  677                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
  678                         return;
printf("%s: could not transmit buffer: %s\n",
sc->sc_dev.dv_xname, usbd_errstr(status));
  683                 if (status == USBD_STALLED)
usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh);
ifp->if_oerrors++;
  687                 return;
  688         }
s = splnet();
ieee80211_release_node(ic, data->ni);
data->ni = NULL;
sc->tx_queued--;
ifp->if_opackets++;
DPRINTFN(10, ("tx done\n"));
sc->sc_tx_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
ural_start(ifp);
splx(s);
  705 }
  707 void
ural_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
  709 {
  710         struct ural_rx_data *data = priv;
  711         struct ural_softc *sc = data->sc;
  712         struct ieee80211com *ic = &sc->sc_ic;
  713         struct ifnet *ifp = &ic->ic_if;
  714         const struct ural_rx_desc *desc;
  715         struct ieee80211_frame *wh;
  716         struct ieee80211_node *ni;
  717         struct mbuf *mnew, *m;
  718         int s, len;
  720         if (status != USBD_NORMAL_COMPLETION) {
  721                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
  722                         return;
  724                 if (status == USBD_STALLED)
usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh);
  726                 goto skip;
  727         }
usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL);
  731         if (len < RAL_RX_DESC_SIZE + IEEE80211_MIN_LEN) {
DPRINTF(("%s: xfer too short %d\n", sc->sc_dev.dv_xname,
len));
ifp->if_ierrors++;
  735                 goto skip;
  736         }
  738         /* rx descriptor is located at the end */
desc = (struct ural_rx_desc *)(data->buf + len - RAL_RX_DESC_SIZE);
  741         if (letoh32(desc->flags) & (RAL_RX_PHY_ERROR | RAL_RX_CRC_ERROR)) {
  742                 /*
  743                  * This should not happen since we did not request to receive
  744                  * those frames when we filled RAL_TXRX_CSR2.
  745                  */
DPRINTFN(5, ("PHY or CRC error\n"));
ifp->if_ierrors++;
  748                 goto skip;
  749         }
MGETHDR(mnew, M_DONTWAIT, MT_DATA);
  752         if (mnew == NULL) {
printf("%s: could not allocate rx mbuf\n",
sc->sc_dev.dv_xname);
ifp->if_ierrors++;
  756                 goto skip;
  757         }
MCLGET(mnew, M_DONTWAIT);
  759         if (!(mnew->m_flags & M_EXT)) {
printf("%s: could not allocate rx mbuf cluster\n",
sc->sc_dev.dv_xname);
m_freem(mnew);
ifp->if_ierrors++;
  764                 goto skip;
  765         }
m = data->m;
data->m = mnew;
data->buf = mtod(data->m, uint8_t *);
  770         /* finalize mbuf */
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = m->m_len = (letoh32(desc->flags) >> 16) & 0xfff;
m_adj(m, -IEEE80211_CRC_LEN);   /* trim FCS */
s = splnet();
  777 #if NBPFILTER > 0
  778         if (sc->sc_drvbpf != NULL) {
  779                 struct mbuf mb;
  780                 struct ural_rx_radiotap_header *tap = &sc->sc_rxtap;
tap->wr_flags = 0;
tap->wr_rate = ural_rxrate(desc);
tap->wr_chan_freq = htole16(ic->ic_bss->ni_chan->ic_freq);
tap->wr_chan_flags = htole16(ic->ic_bss->ni_chan->ic_flags);
tap->wr_antenna = sc->rx_ant;
tap->wr_antsignal = desc->rssi;
mb.m_data = (caddr_t)tap;
mb.m_len = sc->sc_rxtap_len;
mb.m_next = m;
mb.m_nextpkt = NULL;
mb.m_type = 0;
mb.m_flags = 0;
bpf_mtap(sc->sc_drvbpf, &mb, BPF_DIRECTION_IN);
  796         }
  797 #endif
wh = mtod(m, struct ieee80211_frame *);
ni = ieee80211_find_rxnode(ic, wh);
  802         /* send the frame to the 802.11 layer */
ieee80211_input(ifp, m, ni, desc->rssi, 0);
  805         /* node is no longer needed */
ieee80211_release_node(ic, ni);
  808         /*
  809          * In HostAP mode, ieee80211_input() will enqueue packets in if_snd
  810          * without calling if_start().
  811          */
  812         if (!IFQ_IS_EMPTY(&ifp->if_snd) && !(ifp->if_flags & IFF_OACTIVE))
ural_start(ifp);
splx(s);
DPRINTFN(15, ("rx done\n"));
skip:   /* setup a new transfer */
usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES,
USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, ural_rxeof);
  822         (void)usbd_transfer(xfer);
  823 }
  825 /*
  826  * This function is only used by the Rx radiotap code. It returns the rate at
  827  * which a given frame was received.
  828  */
  829 #if NBPFILTER > 0
uint8_t
ural_rxrate(const struct ural_rx_desc *desc)
  832 {
  833         if (letoh32(desc->flags) & RAL_RX_OFDM) {
  834                 /* reverse function of ural_plcp_signal */
  835                 switch (desc->rate) {
  836                 case 0xb:       return 12;
  837                 case 0xf:       return 18;
  838                 case 0xa:       return 24;
  839                 case 0xe:       return 36;
  840                 case 0x9:       return 48;
  841                 case 0xd:       return 72;
  842                 case 0x8:       return 96;
  843                 case 0xc:       return 108;
  844                 }
  845         } else {
  846                 if (desc->rate == 10)
  847                         return 2;
  848                 if (desc->rate == 20)
  849                         return 4;
  850                 if (desc->rate == 55)
  851                         return 11;
  852                 if (desc->rate == 110)
  853                         return 22;
  854         }
  855         return 2;       /* should not get there */
  856 }
  857 #endif
  859 /*
  860  * Return the expected ack rate for a frame transmitted at rate `rate'.
  861  */
  862 int
ural_ack_rate(struct ieee80211com *ic, int rate)
  864 {
  865         switch (rate) {
  866         /* CCK rates */
  867         case 2:
  868                 return 2;
  869         case 4:
  870         case 11:
  871         case 22:
  872                 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate;
  874         /* OFDM rates */
  875         case 12:
  876         case 18:
  877                 return 12;
  878         case 24:
  879         case 36:
  880                 return 24;
  881         case 48:
  882         case 72:
  883         case 96:
  884         case 108:
  885                 return 48;
  886         }
  888         /* default to 1Mbps */
  889         return 2;
  890 }
  892 /*
  893  * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
  894  * The function automatically determines the operating mode depending on the
  895  * given rate. `flags' indicates whether short preamble is in use or not.
  896  */
uint16_t
ural_txtime(int len, int rate, uint32_t flags)
  899 {
uint16_t txtime;
  902         if (RAL_RATE_IS_OFDM(rate)) {
  903                 /* IEEE Std 802.11g-2003, pp. 44 */
txtime = (8 + 4 * len + 3 + rate - 1) / rate;
txtime = 16 + 4 + 4 * txtime + 6;
  906         } else {
  907                 /* IEEE Std 802.11b-1999, pp. 28 */
txtime = (16 * len + rate - 1) / rate;
  909                 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
txtime +=  72 + 24;
  911                 else
txtime += 144 + 48;
  913         }
  914         return txtime;
  915 }
uint8_t
ural_plcp_signal(int rate)
  919 {
  920         switch (rate) {
  921         /* CCK rates (returned values are device-dependent) */
  922         case 2:         return 0x0;
  923         case 4:         return 0x1;
  924         case 11:        return 0x2;
  925         case 22:        return 0x3;
  927         /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
  928         case 12:        return 0xb;
  929         case 18:        return 0xf;
  930         case 24:        return 0xa;
  931         case 36:        return 0xe;
  932         case 48:        return 0x9;
  933         case 72:        return 0xd;
  934         case 96:        return 0x8;
  935         case 108:       return 0xc;
  937         /* unsupported rates (should not get there) */
  938         default:        return 0xff;
  939         }
  940 }
  942 void
ural_setup_tx_desc(struct ural_softc *sc, struct ural_tx_desc *desc,
uint32_t flags, int len, int rate)
  945 {
  946         struct ieee80211com *ic = &sc->sc_ic;
uint16_t plcp_length;
  948         int remainder;
desc->flags = htole32(flags);
desc->flags |= htole32(len << 16);
desc->wme = htole16(
RAL_AIFSN(2) |
RAL_LOGCWMIN(3) |
RAL_LOGCWMAX(5));
  958         /* setup PLCP fields */
desc->plcp_signal  = ural_plcp_signal(rate);
desc->plcp_service = 4;
len += IEEE80211_CRC_LEN;
  963         if (RAL_RATE_IS_OFDM(rate)) {
desc->flags |= htole32(RAL_TX_OFDM);
plcp_length = len & 0xfff;
desc->plcp_length_hi = plcp_length >> 6;
desc->plcp_length_lo = plcp_length & 0x3f;
  969         } else {
plcp_length = (16 * len + rate - 1) / rate;
  971                 if (rate == 22) {
remainder = (16 * len) % 22;
  973                         if (remainder != 0 && remainder < 7)
desc->plcp_service |= RAL_PLCP_LENGEXT;
  975                 }
desc->plcp_length_hi = plcp_length >> 8;
desc->plcp_length_lo = plcp_length & 0xff;
  979                 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
desc->plcp_signal |= 0x08;
  981         }
desc->iv = 0;
desc->eiv = 0;
  985 }
  987 #define RAL_TX_TIMEOUT  5000
  989 int
ural_tx_bcn(struct ural_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
  991 {
  992         struct ural_tx_desc *desc;
usbd_xfer_handle xfer;
usbd_status error;
uint8_t cmd = 0;
uint8_t *buf;
  997         int xferlen, rate = 2;
xfer = usbd_alloc_xfer(sc->sc_udev);
 1000         if (xfer == NULL)
 1001                 return ENOMEM;
 1003         /* xfer length needs to be a multiple of two! */
xferlen = (RAL_TX_DESC_SIZE + m0->m_pkthdr.len + 1) & ~1;
buf = usbd_alloc_buffer(xfer, xferlen);
 1007         if (buf == NULL) {
usbd_free_xfer(xfer);
 1009                 return ENOMEM;
 1010         }
usbd_setup_xfer(xfer, sc->sc_tx_pipeh, NULL, &cmd, sizeof cmd,
USBD_FORCE_SHORT_XFER, RAL_TX_TIMEOUT, NULL);
error = usbd_sync_transfer(xfer);
 1016         if (error != 0) {
usbd_free_xfer(xfer);
 1018                 return error;
 1019         }
desc = (struct ural_tx_desc *)buf;
m_copydata(m0, 0, m0->m_pkthdr.len, buf + RAL_TX_DESC_SIZE);
ural_setup_tx_desc(sc, desc, RAL_TX_IFS_NEWBACKOFF | RAL_TX_TIMESTAMP,
m0->m_pkthdr.len, rate);
DPRINTFN(10, ("sending beacon frame len=%u rate=%u xfer len=%u\n",
m0->m_pkthdr.len, rate, xferlen));
usbd_setup_xfer(xfer, sc->sc_tx_pipeh, NULL, buf, xferlen,
USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RAL_TX_TIMEOUT, NULL);
error = usbd_sync_transfer(xfer);
usbd_free_xfer(xfer);
 1036         return error;
 1037 }
 1039 int
ural_tx_data(struct ural_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
 1041 {
 1042         struct ieee80211com *ic = &sc->sc_ic;
 1043         struct ifnet *ifp = &ic->ic_if;
 1044         struct ural_tx_desc *desc;
 1045         struct ural_tx_data *data;
 1046         struct ieee80211_frame *wh;
uint32_t flags = RAL_TX_NEWSEQ;
uint16_t dur;
usbd_status error;
 1050         int rate, xferlen, pktlen, needrts = 0, needcts = 0;
wh = mtod(m0, struct ieee80211_frame *);
 1054         if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
m0 = ieee80211_wep_crypt(ifp, m0, 1);
 1056                 if (m0 == NULL)
 1057                         return ENOBUFS;
 1059                 /* packet header may have moved, reset our local pointer */
wh = mtod(m0, struct ieee80211_frame *);
 1061         }
 1063         /* compute actual packet length (including CRC and crypto overhead) */
pktlen = m0->m_pkthdr.len + IEEE80211_CRC_LEN;
 1066         /* pickup a rate */
 1067         if (IEEE80211_IS_MULTICAST(wh->i_addr1) ||
 1068             ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
IEEE80211_FC0_TYPE_MGT)) {
 1070                 /* mgmt/multicast frames are sent at the lowest avail. rate */
rate = ni->ni_rates.rs_rates[0];
 1072         } else if (ic->ic_fixed_rate != -1) {
rate = ic->ic_sup_rates[ic->ic_curmode].
rs_rates[ic->ic_fixed_rate];
 1075         } else
rate = ni->ni_rates.rs_rates[ni->ni_txrate];
 1077         if (rate == 0)
rate = 2;       /* XXX should not happen */
rate &= IEEE80211_RATE_VAL;
 1081         /* check if RTS/CTS or CTS-to-self protection must be used */
 1082         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
 1083                 /* multicast frames are not sent at OFDM rates in 802.11b/g */
 1084                 if (pktlen > ic->ic_rtsthreshold) {
needrts = 1;    /* RTS/CTS based on frame length */
 1086                 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
RAL_RATE_IS_OFDM(rate)) {
 1088                         if (ic->ic_protmode == IEEE80211_PROT_CTSONLY)
needcts = 1;    /* CTS-to-self */
 1090                         else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS)
needrts = 1;    /* RTS/CTS */
 1092                 }
 1093         }
 1094         if (needrts || needcts) {
 1095                 struct mbuf *mprot;
 1096                 int protrate, ackrate;
uint16_t dur;
protrate = 2;
ackrate  = ural_ack_rate(ic, rate);
dur = ural_txtime(pktlen, rate, ic->ic_flags) +
ural_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
 1104                       2 * RAL_SIFS;
 1105                 if (needrts) {
dur += ural_txtime(RAL_CTS_SIZE, ural_ack_rate(ic,
protrate), ic->ic_flags) + RAL_SIFS;
mprot = ieee80211_get_rts(ic, wh, dur);
 1109                 } else {
mprot = ieee80211_get_cts_to_self(ic, dur);
 1111                 }
 1112                 if (mprot == NULL) {
printf("%s: could not allocate protection frame\n",
sc->sc_dev.dv_xname);
m_freem(m0);
 1116                         return ENOBUFS;
 1117                 }
data = &sc->tx_data[sc->tx_cur];
desc = (struct ural_tx_desc *)data->buf;
 1122                 /* avoid multiple free() of the same node for each fragment */
data->ni = ieee80211_ref_node(ni);
m_copydata(mprot, 0, mprot->m_pkthdr.len,
data->buf + RAL_TX_DESC_SIZE);
ural_setup_tx_desc(sc, desc,
 1128                     (needrts ? RAL_TX_NEED_ACK : 0) | RAL_TX_RETRY(7),
mprot->m_pkthdr.len, protrate);
 1131                 /* no roundup necessary here */
xferlen = RAL_TX_DESC_SIZE + mprot->m_pkthdr.len;
 1134                 /* XXX may want to pass the protection frame to BPF */
 1136                 /* mbuf is no longer needed */
m_freem(mprot);
usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf,
xferlen, USBD_FORCE_SHORT_XFER | USBD_NO_COPY,
RAL_TX_TIMEOUT, ural_txeof);
error = usbd_transfer(data->xfer);
 1143                 if (error != 0 && error != USBD_IN_PROGRESS) {
m_freem(m0);
 1145                         return error;
 1146                 }
sc->tx_queued++;
sc->tx_cur = (sc->tx_cur + 1) % RAL_TX_LIST_COUNT;
flags |= RAL_TX_IFS_SIFS;
 1152         }
data = &sc->tx_data[sc->tx_cur];
desc = (struct ural_tx_desc *)data->buf;
data->ni = ni;
 1159         if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
flags |= RAL_TX_NEED_ACK;
flags |= RAL_TX_RETRY(7);
dur = ural_txtime(RAL_ACK_SIZE, ural_ack_rate(ic, rate),
ic->ic_flags) + RAL_SIFS;
 1165                 *(uint16_t *)wh->i_dur = htole16(dur);
 1167                 /* tell hardware to set timestamp in probe responses */
 1168                 if ((wh->i_fc[0] &
 1169                     (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==
 1170                     (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP))
flags |= RAL_TX_TIMESTAMP;
 1172         }
 1174 #if NBPFILTER > 0
 1175         if (sc->sc_drvbpf != NULL) {
 1176                 struct mbuf mb;
 1177                 struct ural_tx_radiotap_header *tap = &sc->sc_txtap;
tap->wt_flags = 0;
tap->wt_rate = rate;
tap->wt_chan_freq = htole16(ic->ic_bss->ni_chan->ic_freq);
tap->wt_chan_flags = htole16(ic->ic_bss->ni_chan->ic_flags);
tap->wt_antenna = sc->tx_ant;
mb.m_data = (caddr_t)tap;
mb.m_len = sc->sc_txtap_len;
mb.m_next = m0;
mb.m_nextpkt = NULL;
mb.m_type = 0;
mb.m_flags = 0;
bpf_mtap(sc->sc_drvbpf, &mb, BPF_DIRECTION_OUT);
 1192         }
 1193 #endif
m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RAL_TX_DESC_SIZE);
ural_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate);
 1198         /* align end on a 2-bytes boundary */
xferlen = (RAL_TX_DESC_SIZE + m0->m_pkthdr.len + 1) & ~1;
 1201         /*
 1202          * No space left in the last URB to store the extra 2 bytes, force
 1203          * sending of another URB.
 1204          */
 1205         if ((xferlen % 64) == 0)
xferlen += 2;
DPRINTFN(10, ("sending frame len=%u rate=%u xfer len=%u\n",
m0->m_pkthdr.len, rate, xferlen));
 1211         /* mbuf is no longer needed */
m_freem(m0);
usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen,
USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RAL_TX_TIMEOUT, ural_txeof);
error = usbd_transfer(data->xfer);
 1217         if (error != 0 && error != USBD_IN_PROGRESS)
 1218                 return error;
sc->tx_queued++;
sc->tx_cur = (sc->tx_cur + 1) % RAL_TX_LIST_COUNT;
 1223         return 0;
 1224 }
 1226 void
ural_start(struct ifnet *ifp)
 1228 {
 1229         struct ural_softc *sc = ifp->if_softc;
 1230         struct ieee80211com *ic = &sc->sc_ic;
 1231         struct ieee80211_node *ni;
 1232         struct mbuf *m0;
 1234         /*
 1235          * net80211 may still try to send management frames even if the
 1236          * IFF_RUNNING flag is not set...
 1237          */
 1238         if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
 1239                 return;
 1241         for (;;) {
IF_POLL(&ic->ic_mgtq, m0);
 1243                 if (m0 != NULL) {
 1244                         if (sc->tx_queued >= RAL_TX_LIST_COUNT - 1) {
ifp->if_flags |= IFF_OACTIVE;
 1246                                 break;
 1247                         }
IF_DEQUEUE(&ic->ic_mgtq, m0);
ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
m0->m_pkthdr.rcvif = NULL;
 1252 #if NBPFILTER > 0
 1253                         if (ic->ic_rawbpf != NULL)
bpf_mtap(ic->ic_rawbpf, m0, BPF_DIRECTION_OUT);
 1255 #endif
 1256                         if (ural_tx_data(sc, m0, ni) != 0)
 1257                                 break;
 1259                 } else {
 1260                         if (ic->ic_state != IEEE80211_S_RUN)
 1261                                 break;
IFQ_POLL(&ifp->if_snd, m0);
 1263                         if (m0 == NULL)
 1264                                 break;
 1265                         if (sc->tx_queued >= RAL_TX_LIST_COUNT - 1) {
ifp->if_flags |= IFF_OACTIVE;
 1267                                 break;
 1268                         }
IFQ_DEQUEUE(&ifp->if_snd, m0);
 1270 #if NBPFILTER > 0
 1271                         if (ifp->if_bpf != NULL)
bpf_mtap(ifp->if_bpf, m0, BPF_DIRECTION_OUT);
 1273 #endif
m0 = ieee80211_encap(ifp, m0, &ni);
 1275                         if (m0 == NULL)
 1276                                 continue;
 1277 #if NBPFILTER > 0
 1278                         if (ic->ic_rawbpf != NULL)
bpf_mtap(ic->ic_rawbpf, m0, BPF_DIRECTION_OUT);
 1280 #endif
 1281                         if (ural_tx_data(sc, m0, ni) != 0) {
 1282                                 if (ni != NULL)
ieee80211_release_node(ic, ni);
ifp->if_oerrors++;
 1285                                 break;
 1286                         }
 1287                 }
sc->sc_tx_timer = 5;
ifp->if_timer = 1;
 1291         }
 1292 }
 1294 void
ural_watchdog(struct ifnet *ifp)
 1296 {
 1297         struct ural_softc *sc = ifp->if_softc;
ifp->if_timer = 0;
 1301         if (sc->sc_tx_timer > 0) {
 1302                 if (--sc->sc_tx_timer == 0) {
printf("%s: device timeout\n", sc->sc_dev.dv_xname);
 1304                         /*ural_init(ifp); XXX needs a process context! */
ifp->if_oerrors++;
 1306                         return;
 1307                 }
ifp->if_timer = 1;
 1309         }
ieee80211_watchdog(ifp);
 1312 }
 1314 int
ural_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 1316 {
 1317         struct ural_softc *sc = ifp->if_softc;
 1318         struct ieee80211com *ic = &sc->sc_ic;
 1319         struct ifaddr *ifa;
 1320         struct ifreq *ifr;
 1321         int s, error = 0;
s = splnet();
 1325         switch (cmd) {
 1326         case SIOCSIFADDR:
ifa = (struct ifaddr *)data;
ifp->if_flags |= IFF_UP;
 1329 #ifdef INET
 1330                 if (ifa->ifa_addr->sa_family == AF_INET)
arp_ifinit(&ic->ic_ac, ifa);
 1332 #endif
 1333                 /* FALLTHROUGH */
 1334         case SIOCSIFFLAGS:
 1335                 if (ifp->if_flags & IFF_UP) {
 1336                         if (ifp->if_flags & IFF_RUNNING)
ural_update_promisc(sc);
 1338                         else
ural_init(ifp);
 1340                 } else {
 1341                         if (ifp->if_flags & IFF_RUNNING)
ural_stop(ifp, 1);
 1343                 }
 1344                 break;
 1346         case SIOCADDMULTI:
 1347         case SIOCDELMULTI:
ifr = (struct ifreq *)data;
error = (cmd == SIOCADDMULTI) ?
ether_addmulti(ifr, &ic->ic_ac) :
ether_delmulti(ifr, &ic->ic_ac);
 1353                 if (error == ENETRESET)
error = 0;
 1355                 break;
 1357         case SIOCS80211CHANNEL:
 1358                 /*
 1359                  * This allows for fast channel switching in monitor mode
 1360                  * (used by kismet). In IBSS mode, we must explicitly reset
 1361                  * the interface to generate a new beacon frame.
 1362                  */
error = ieee80211_ioctl(ifp, cmd, data);
 1364                 if (error == ENETRESET &&
ic->ic_opmode == IEEE80211_M_MONITOR) {
 1366                         if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
 1367                             (IFF_UP | IFF_RUNNING))
ural_set_chan(sc, ic->ic_ibss_chan);
error = 0;
 1370                 }
 1371                 break;
 1373         default:
error = ieee80211_ioctl(ifp, cmd, data);
 1375         }
 1377         if (error == ENETRESET) {
 1378                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
 1379                     (IFF_UP | IFF_RUNNING))
ural_init(ifp);
error = 0;
 1382         }
splx(s);
 1386         return error;
 1387 }
 1389 void
ural_eeprom_read(struct ural_softc *sc, uint16_t addr, void *buf, int len)
 1391 {
usb_device_request_t req;
usbd_status error;
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = RAL_READ_EEPROM;
USETW(req.wValue, 0);
USETW(req.wIndex, addr);
USETW(req.wLength, len);
error = usbd_do_request(sc->sc_udev, &req, buf);
 1402         if (error != 0) {
printf("%s: could not read EEPROM: %s\n",
sc->sc_dev.dv_xname, usbd_errstr(error));
 1405         }
 1406 }
uint16_t
ural_read(struct ural_softc *sc, uint16_t reg)
 1410 {
usb_device_request_t req;
usbd_status error;
uint16_t val;
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = RAL_READ_MAC;
USETW(req.wValue, 0);
USETW(req.wIndex, reg);
USETW(req.wLength, sizeof (uint16_t));
error = usbd_do_request(sc->sc_udev, &req, &val);
 1422         if (error != 0) {
printf("%s: could not read MAC register: %s\n",
sc->sc_dev.dv_xname, usbd_errstr(error));
 1425                 return 0;
 1426         }
 1427         return letoh16(val);
 1428 }
 1430 void
ural_read_multi(struct ural_softc *sc, uint16_t reg, void *buf, int len)
 1432 {
usb_device_request_t req;
usbd_status error;
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = RAL_READ_MULTI_MAC;
USETW(req.wValue, 0);
USETW(req.wIndex, reg);
USETW(req.wLength, len);
error = usbd_do_request(sc->sc_udev, &req, buf);
 1443         if (error != 0) {
printf("%s: could not read MAC register: %s\n",
sc->sc_dev.dv_xname, usbd_errstr(error));
 1446         }
 1447 }
 1449 void
ural_write(struct ural_softc *sc, uint16_t reg, uint16_t val)
 1451 {
usb_device_request_t req;
usbd_status error;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = RAL_WRITE_MAC;
USETW(req.wValue, val);
USETW(req.wIndex, reg);
USETW(req.wLength, 0);
error = usbd_do_request(sc->sc_udev, &req, NULL);
 1462         if (error != 0) {
printf("%s: could not write MAC register: %s\n",
sc->sc_dev.dv_xname, usbd_errstr(error));
 1465         }
 1466 }
 1468 void
ural_write_multi(struct ural_softc *sc, uint16_t reg, void *buf, int len)
 1470 {
usb_device_request_t req;
usbd_status error;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = RAL_WRITE_MULTI_MAC;
USETW(req.wValue, 0);
USETW(req.wIndex, reg);
USETW(req.wLength, len);
error = usbd_do_request(sc->sc_udev, &req, buf);
 1481         if (error != 0) {
printf("%s: could not write MAC register: %s\n",
sc->sc_dev.dv_xname, usbd_errstr(error));
 1484         }
 1485 }
 1487 void
ural_bbp_write(struct ural_softc *sc, uint8_t reg, uint8_t val)
 1489 {
uint16_t tmp;
 1491         int ntries;
 1493         for (ntries = 0; ntries < 5; ntries++) {
 1494                 if (!(ural_read(sc, RAL_PHY_CSR8) & RAL_BBP_BUSY))
 1495                         break;
 1496         }
 1497         if (ntries == 5) {
printf("%s: could not write to BBP\n", sc->sc_dev.dv_xname);
 1499                 return;
 1500         }
tmp = reg << 8 | val;
ural_write(sc, RAL_PHY_CSR7, tmp);
 1504 }
uint8_t
ural_bbp_read(struct ural_softc *sc, uint8_t reg)
 1508 {
uint16_t val;
 1510         int ntries;
val = RAL_BBP_WRITE | reg << 8;
ural_write(sc, RAL_PHY_CSR7, val);
 1515         for (ntries = 0; ntries < 5; ntries++) {
 1516                 if (!(ural_read(sc, RAL_PHY_CSR8) & RAL_BBP_BUSY))
 1517                         break;
 1518         }
 1519         if (ntries == 5) {
printf("%s: could not read BBP\n", sc->sc_dev.dv_xname);
 1521                 return 0;
 1522         }
 1523         return ural_read(sc, RAL_PHY_CSR7) & 0xff;
 1524 }
 1526 void
ural_rf_write(struct ural_softc *sc, uint8_t reg, uint32_t val)
 1528 {
uint32_t tmp;
 1530         int ntries;
 1532         for (ntries = 0; ntries < 5; ntries++) {
 1533                 if (!(ural_read(sc, RAL_PHY_CSR10) & RAL_RF_LOBUSY))
 1534                         break;
 1535         }
 1536         if (ntries == 5) {
printf("%s: could not write to RF\n", sc->sc_dev.dv_xname);
 1538                 return;
 1539         }
tmp = RAL_RF_BUSY | RAL_RF_20BIT | (val & 0xfffff) << 2 | (reg & 0x3);
ural_write(sc, RAL_PHY_CSR9,  tmp & 0xffff);
ural_write(sc, RAL_PHY_CSR10, tmp >> 16);
 1545         /* remember last written value in sc */
sc->rf_regs[reg] = val;
DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
 1549 }
 1551 void
ural_set_chan(struct ural_softc *sc, struct ieee80211_channel *c)
 1553 {
 1554         struct ieee80211com *ic = &sc->sc_ic;
uint8_t power, tmp;
u_int chan;
chan = ieee80211_chan2ieee(ic, c);
 1559         if (chan == 0 || chan == IEEE80211_CHAN_ANY)
 1560                 return;
power = min(sc->txpow[chan - 1], 31);
DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
 1566         switch (sc->rf_rev) {
 1567         case RAL_RF_2522:
ural_rf_write(sc, RAL_RF1, 0x00814);
ural_rf_write(sc, RAL_RF2, ural_rf2522_r2[chan - 1]);
ural_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
 1571                 break;
 1573         case RAL_RF_2523:
ural_rf_write(sc, RAL_RF1, 0x08804);
ural_rf_write(sc, RAL_RF2, ural_rf2523_r2[chan - 1]);
ural_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
 1578                 break;
 1580         case RAL_RF_2524:
ural_rf_write(sc, RAL_RF1, 0x0c808);
ural_rf_write(sc, RAL_RF2, ural_rf2524_r2[chan - 1]);
ural_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
 1585                 break;
 1587         case RAL_RF_2525:
ural_rf_write(sc, RAL_RF1, 0x08808);
ural_rf_write(sc, RAL_RF2, ural_rf2525_hi_r2[chan - 1]);
ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
ural_rf_write(sc, RAL_RF1, 0x08808);
ural_rf_write(sc, RAL_RF2, ural_rf2525_r2[chan - 1]);
ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
 1597                 break;
 1599         case RAL_RF_2525E:
ural_rf_write(sc, RAL_RF1, 0x08808);
ural_rf_write(sc, RAL_RF2, ural_rf2525e_r2[chan - 1]);
ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
 1604                 break;
 1606         case RAL_RF_2526:
ural_rf_write(sc, RAL_RF2, ural_rf2526_hi_r2[chan - 1]);
ural_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
ural_rf_write(sc, RAL_RF1, 0x08804);
ural_rf_write(sc, RAL_RF2, ural_rf2526_r2[chan - 1]);
ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
ural_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
 1614                 break;
 1615         }
 1617         if (ic->ic_opmode != IEEE80211_M_MONITOR &&
ic->ic_state != IEEE80211_S_SCAN) {
 1619                 /* set Japan filter bit for channel 14 */
tmp = ural_bbp_read(sc, 70);
tmp &= ~RAL_JAPAN_FILTER;
 1623                 if (chan == 14)
tmp |= RAL_JAPAN_FILTER;
ural_bbp_write(sc, 70, tmp);
 1628                 /* clear CRC errors */
ural_read(sc, RAL_STA_CSR0);
DELAY(1000); /* RF needs a 1ms delay here */
ural_disable_rf_tune(sc);
 1633         }
 1634 }
 1636 /*
 1637  * Disable RF auto-tuning.
 1638  */
 1639 void
ural_disable_rf_tune(struct ural_softc *sc)
 1641 {
uint32_t tmp;
 1644         if (sc->rf_rev != RAL_RF_2523) {
tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
ural_rf_write(sc, RAL_RF1, tmp);
 1647         }
tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
ural_rf_write(sc, RAL_RF3, tmp);
DPRINTFN(2, ("disabling RF autotune\n"));
 1653 }
 1655 /*
 1656  * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
 1657  * synchronization.
 1658  */
 1659 void
ural_enable_tsf_sync(struct ural_softc *sc)
 1661 {
 1662         struct ieee80211com *ic = &sc->sc_ic;
uint16_t logcwmin, preload, tmp;
 1665         /* first, disable TSF synchronization */
ural_write(sc, RAL_TXRX_CSR19, 0);
tmp = (16 * ic->ic_bss->ni_intval) << 4;
ural_write(sc, RAL_TXRX_CSR18, tmp);
logcwmin = (ic->ic_opmode == IEEE80211_M_IBSS) ? 2 : 0;
preload = (ic->ic_opmode == IEEE80211_M_IBSS) ? 320 : 6;
tmp = logcwmin << 12 | preload;
ural_write(sc, RAL_TXRX_CSR20, tmp);
 1676         /* finally, enable TSF synchronization */
tmp = RAL_ENABLE_TSF | RAL_ENABLE_TBCN;
 1678         if (ic->ic_opmode == IEEE80211_M_STA)
tmp |= RAL_ENABLE_TSF_SYNC(1);
 1680         else
tmp |= RAL_ENABLE_TSF_SYNC(2) | RAL_ENABLE_BEACON_GENERATOR;
ural_write(sc, RAL_TXRX_CSR19, tmp);
DPRINTF(("enabling TSF synchronization\n"));
 1685 }
 1687 void
ural_update_slot(struct ural_softc *sc)
 1689 {
 1690         struct ieee80211com *ic = &sc->sc_ic;
uint16_t slottime, sifs, eifs;
slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
 1695         /*
 1696          * These settings may sound a bit inconsistent but this is what the
 1697          * reference driver does.
 1698          */
 1699         if (ic->ic_curmode == IEEE80211_MODE_11B) {
sifs = 16 - RAL_RXTX_TURNAROUND;
eifs = 364;
 1702         } else {
sifs = 10 - RAL_RXTX_TURNAROUND;
eifs = 64;
 1705         }
ural_write(sc, RAL_MAC_CSR10, slottime);
ural_write(sc, RAL_MAC_CSR11, sifs);
ural_write(sc, RAL_MAC_CSR12, eifs);
 1710 }
 1712 void
ural_set_txpreamble(struct ural_softc *sc)
 1714 {
uint16_t tmp;
tmp = ural_read(sc, RAL_TXRX_CSR10);
tmp &= ~RAL_SHORT_PREAMBLE;
 1720         if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE)
tmp |= RAL_SHORT_PREAMBLE;
ural_write(sc, RAL_TXRX_CSR10, tmp);
 1724 }
 1726 void
ural_set_basicrates(struct ural_softc *sc)
 1728 {
 1729         struct ieee80211com *ic = &sc->sc_ic;
 1731         /* update basic rate set */
 1732         if (ic->ic_curmode == IEEE80211_MODE_11B) {
 1733                 /* 11b basic rates: 1, 2Mbps */
ural_write(sc, RAL_TXRX_CSR11, 0x3);
 1735         } else {
 1736                 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */
ural_write(sc, RAL_TXRX_CSR11, 0xf);
 1738         }
 1739 }
 1741 void
ural_set_bssid(struct ural_softc *sc, const uint8_t *bssid)
 1743 {
uint16_t tmp;
tmp = bssid[0] | bssid[1] << 8;
ural_write(sc, RAL_MAC_CSR5, tmp);
tmp = bssid[2] | bssid[3] << 8;
ural_write(sc, RAL_MAC_CSR6, tmp);
tmp = bssid[4] | bssid[5] << 8;
ural_write(sc, RAL_MAC_CSR7, tmp);
DPRINTF(("setting BSSID to %s\n", ether_sprintf((uint8_t *)bssid)));
 1756 }
 1758 void
ural_set_macaddr(struct ural_softc *sc, const uint8_t *addr)
 1760 {
uint16_t tmp;
tmp = addr[0] | addr[1] << 8;
ural_write(sc, RAL_MAC_CSR2, tmp);
tmp = addr[2] | addr[3] << 8;
ural_write(sc, RAL_MAC_CSR3, tmp);
tmp = addr[4] | addr[5] << 8;
ural_write(sc, RAL_MAC_CSR4, tmp);
DPRINTF(("setting MAC address to %s\n",
ether_sprintf((uint8_t *)addr)));
 1774 }
 1776 void
ural_update_promisc(struct ural_softc *sc)
 1778 {
 1779         struct ifnet *ifp = &sc->sc_ic.ic_if;
uint16_t tmp;
tmp = ural_read(sc, RAL_TXRX_CSR2);
tmp &= ~RAL_DROP_NOT_TO_ME;
 1785         if (!(ifp->if_flags & IFF_PROMISC))
tmp |= RAL_DROP_NOT_TO_ME;
ural_write(sc, RAL_TXRX_CSR2, tmp);
DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
 1791             "entering" : "leaving"));
 1792 }
 1794 const char *
ural_get_rf(int rev)
 1796 {
 1797         switch (rev) {
 1798         case RAL_RF_2522:       return "RT2522";
 1799         case RAL_RF_2523:       return "RT2523";
 1800         case RAL_RF_2524:       return "RT2524";
 1801         case RAL_RF_2525:       return "RT2525";
 1802         case RAL_RF_2525E:      return "RT2525e";
 1803         case RAL_RF_2526:       return "RT2526";
 1804         case RAL_RF_5222:       return "RT5222";
 1805         default:                return "unknown";
 1806         }
 1807 }
 1809 void
ural_read_eeprom(struct ural_softc *sc)
 1811 {
 1812         struct ieee80211com *ic = &sc->sc_ic;
uint16_t val;
 1815         /* retrieve MAC/BBP type */
ural_eeprom_read(sc, RAL_EEPROM_MACBBP, &val, 2);
sc->macbbp_rev = letoh16(val);
ural_eeprom_read(sc, RAL_EEPROM_CONFIG0, &val, 2);
val = letoh16(val);
sc->rf_rev =   (val >> 11) & 0x7;
sc->hw_radio = (val >> 10) & 0x1;
sc->led_mode = (val >> 6)  & 0x7;
sc->rx_ant =   (val >> 4)  & 0x3;
sc->tx_ant =   (val >> 2)  & 0x3;
sc->nb_ant =   val & 0x3;
 1828         /* read MAC address */
ural_eeprom_read(sc, RAL_EEPROM_ADDRESS, ic->ic_myaddr, 6);
 1831         /* read default values for BBP registers */
ural_eeprom_read(sc, RAL_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16);
 1834         /* read Tx power for all b/g channels */
ural_eeprom_read(sc, RAL_EEPROM_TXPOWER, sc->txpow, 14);
 1836 }
 1838 int
ural_bbp_init(struct ural_softc *sc)
 1840 {
 1841 #define N(a)    (sizeof (a) / sizeof ((a)[0]))
 1842         int i, ntries;
 1844         /* wait for BBP to be ready */
 1845         for (ntries = 0; ntries < 100; ntries++) {
 1846                 if (ural_bbp_read(sc, RAL_BBP_VERSION) != 0)
 1847                         break;
DELAY(1000);
 1849         }
 1850         if (ntries == 100) {
printf("%s: timeout waiting for BBP\n", sc->sc_dev.dv_xname);
 1852                 return EIO;
 1853         }
 1855         /* initialize BBP registers to default values */
 1856         for (i = 0; i < N(ural_def_bbp); i++)
ural_bbp_write(sc, ural_def_bbp[i].reg, ural_def_bbp[i].val);
 1859 #if 0
 1860         /* initialize BBP registers to values stored in EEPROM */
 1861         for (i = 0; i < 16; i++) {
 1862                 if (sc->bbp_prom[i].reg == 0xff)
 1863                         continue;
ural_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
 1865         }
 1866 #endif
 1868         return 0;
 1869 #undef N
 1870 }
 1872 void
ural_set_txantenna(struct ural_softc *sc, int antenna)
 1874 {
uint16_t tmp;
uint8_t tx;
tx = ural_bbp_read(sc, RAL_BBP_TX) & ~RAL_BBP_ANTMASK;
 1879         if (antenna == 1)
tx |= RAL_BBP_ANTA;
 1881         else if (antenna == 2)
tx |= RAL_BBP_ANTB;
 1883         else
tx |= RAL_BBP_DIVERSITY;
 1886         /* need to force I/Q flip for RF 2525e, 2526 and 5222 */
 1887         if (sc->rf_rev == RAL_RF_2525E || sc->rf_rev == RAL_RF_2526 ||
sc->rf_rev == RAL_RF_5222)
tx |= RAL_BBP_FLIPIQ;
ural_bbp_write(sc, RAL_BBP_TX, tx);
 1893         /* update flags in PHY_CSR5 and PHY_CSR6 too */
tmp = ural_read(sc, RAL_PHY_CSR5) & ~0x7;
ural_write(sc, RAL_PHY_CSR5, tmp | (tx & 0x7));
tmp = ural_read(sc, RAL_PHY_CSR6) & ~0x7;
ural_write(sc, RAL_PHY_CSR6, tmp | (tx & 0x7));
 1899 }
 1901 void
ural_set_rxantenna(struct ural_softc *sc, int antenna)
 1903 {
uint8_t rx;
rx = ural_bbp_read(sc, RAL_BBP_RX) & ~RAL_BBP_ANTMASK;
 1907         if (antenna == 1)
rx |= RAL_BBP_ANTA;
 1909         else if (antenna == 2)
rx |= RAL_BBP_ANTB;
 1911         else
rx |= RAL_BBP_DIVERSITY;
 1914         /* need to force no I/Q flip for RF 2525e and 2526 */
 1915         if (sc->rf_rev == RAL_RF_2525E || sc->rf_rev == RAL_RF_2526)
rx &= ~RAL_BBP_FLIPIQ;
ural_bbp_write(sc, RAL_BBP_RX, rx);
 1919 }
 1921 int
ural_init(struct ifnet *ifp)
 1923 {
 1924 #define N(a)    (sizeof (a) / sizeof ((a)[0]))
 1925         struct ural_softc *sc = ifp->if_softc;
 1926         struct ieee80211com *ic = &sc->sc_ic;
uint16_t tmp;
usbd_status error;
 1929         int i, ntries;
ural_stop(ifp, 0);
 1933         /* initialize MAC registers to default values */
 1934         for (i = 0; i < N(ural_def_mac); i++)
ural_write(sc, ural_def_mac[i].reg, ural_def_mac[i].val);
 1937         /* wait for BBP and RF to wake up (this can take a long time!) */
 1938         for (ntries = 0; ntries < 100; ntries++) {
tmp = ural_read(sc, RAL_MAC_CSR17);
 1940                 if ((tmp & (RAL_BBP_AWAKE | RAL_RF_AWAKE)) ==
 1941                     (RAL_BBP_AWAKE | RAL_RF_AWAKE))
 1942                         break;
DELAY(1000);
 1944         }
 1945         if (ntries == 100) {
printf("%s: timeout waiting for BBP/RF to wakeup\n",
sc->sc_dev.dv_xname);
error = EIO;
 1949                 goto fail;
 1950         }
 1952         /* we're ready! */
ural_write(sc, RAL_MAC_CSR1, RAL_HOST_READY);
 1955         /* set basic rate set (will be updated later) */
ural_write(sc, RAL_TXRX_CSR11, 0x153);
error = ural_bbp_init(sc);
 1959         if (error != 0)
 1960                 goto fail;
 1962         /* set default BSS channel */
ic->ic_bss->ni_chan = ic->ic_ibss_chan;
ural_set_chan(sc, ic->ic_bss->ni_chan);
 1966         /* clear statistic registers (STA_CSR0 to STA_CSR10) */
ural_read_multi(sc, RAL_STA_CSR0, sc->sta, sizeof sc->sta);
 1969         /* set default sensitivity */
ural_bbp_write(sc, 17, 0x48);
ural_set_txantenna(sc, 1);
ural_set_rxantenna(sc, 1);
IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl));
ural_set_macaddr(sc, ic->ic_myaddr);
 1978         /*
 1979          * Copy WEP keys into adapter's memory (SEC_CSR0 to SEC_CSR31).
 1980          */
 1981         for (i = 0; i < IEEE80211_WEP_NKID; i++) {
 1982                 struct ieee80211_key *k = &ic->ic_nw_keys[i];
ural_write_multi(sc, RAL_SEC_CSR0 + i * IEEE80211_KEYBUF_SIZE,
k->k_key, IEEE80211_KEYBUF_SIZE);
 1985         }
 1987         /*
 1988          * Allocate xfer for AMRR statistics requests.
 1989          */
sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev);
 1991         if (sc->amrr_xfer == NULL) {
printf("%s: could not allocate AMRR xfer\n",
sc->sc_dev.dv_xname);
 1994                 goto fail;
 1995         }
 1997         /*
 1998          * Open Tx and Rx USB bulk pipes.
 1999          */
error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE,
 2001             &sc->sc_tx_pipeh);
 2002         if (error != 0) {
printf("%s: could not open Tx pipe: %s\n",
sc->sc_dev.dv_xname, usbd_errstr(error));
 2005                 goto fail;
 2006         }
error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE,
 2008             &sc->sc_rx_pipeh);
 2009         if (error != 0) {
printf("%s: could not open Rx pipe: %s\n",
sc->sc_dev.dv_xname, usbd_errstr(error));
 2012                 goto fail;
 2013         }
 2015         /*
 2016          * Allocate Tx and Rx xfer queues.
 2017          */
error = ural_alloc_tx_list(sc);
 2019         if (error != 0) {
printf("%s: could not allocate Tx list\n",
sc->sc_dev.dv_xname);
 2022                 goto fail;
 2023         }
error = ural_alloc_rx_list(sc);
 2025         if (error != 0) {
printf("%s: could not allocate Rx list\n",
sc->sc_dev.dv_xname);
 2028                 goto fail;
 2029         }
 2031         /*
 2032          * Start up the receive pipe.
 2033          */
 2034         for (i = 0; i < RAL_RX_LIST_COUNT; i++) {
 2035                 struct ural_rx_data *data = &sc->rx_data[i];
usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf,
MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, ural_rxeof);
error = usbd_transfer(data->xfer);
 2040                 if (error != 0 && error != USBD_IN_PROGRESS) {
printf("%s: could not queue Rx transfer\n",
sc->sc_dev.dv_xname);
 2043                         goto fail;
 2044                 }
 2045         }
 2047         /* kick Rx */
tmp = RAL_DROP_PHY_ERROR | RAL_DROP_CRC_ERROR;
 2049         if (ic->ic_opmode != IEEE80211_M_MONITOR) {
tmp |= RAL_DROP_CTL | RAL_DROP_VERSION_ERROR;
 2051                 if (ic->ic_opmode != IEEE80211_M_HOSTAP)
tmp |= RAL_DROP_TODS;
 2053                 if (!(ifp->if_flags & IFF_PROMISC))
tmp |= RAL_DROP_NOT_TO_ME;
 2055         }
ural_write(sc, RAL_TXRX_CSR2, tmp);
ifp->if_flags &= ~IFF_OACTIVE;
ifp->if_flags |= IFF_RUNNING;
 2061         if (ic->ic_opmode == IEEE80211_M_MONITOR)
ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
 2063         else
ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
 2066         return 0;
fail:   ural_stop(ifp, 1);
 2069         return error;
 2070 #undef N
 2071 }
 2073 void
ural_stop(struct ifnet *ifp, int disable)
 2075 {
 2076         struct ural_softc *sc = ifp->if_softc;
 2077         struct ieee80211com *ic = &sc->sc_ic;
sc->sc_tx_timer = 0;
ifp->if_timer = 0;
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
ieee80211_new_state(ic, IEEE80211_S_INIT, -1);  /* free all nodes */
 2085         /* disable Rx */
ural_write(sc, RAL_TXRX_CSR2, RAL_DISABLE_RX);
 2088         /* reset ASIC and BBP (but won't reset MAC registers!) */
ural_write(sc, RAL_MAC_CSR1, RAL_RESET_ASIC | RAL_RESET_BBP);
ural_write(sc, RAL_MAC_CSR1, 0);
 2092         if (sc->amrr_xfer != NULL) {
usbd_free_xfer(sc->amrr_xfer);
sc->amrr_xfer = NULL;
 2095         }
 2096         if (sc->sc_rx_pipeh != NULL) {
usbd_abort_pipe(sc->sc_rx_pipeh);
usbd_close_pipe(sc->sc_rx_pipeh);
sc->sc_rx_pipeh = NULL;
 2100         }
 2101         if (sc->sc_tx_pipeh != NULL) {
usbd_abort_pipe(sc->sc_tx_pipeh);
usbd_close_pipe(sc->sc_tx_pipeh);
sc->sc_tx_pipeh = NULL;
 2105         }
ural_free_rx_list(sc);
ural_free_tx_list(sc);
 2109 }
 2111 void
ural_newassoc(struct ieee80211com *ic, struct ieee80211_node *ni, int isnew)
 2113 {
 2114         /* start with lowest Tx rate */
ni->ni_txrate = 0;
 2116 }
 2118 void
ural_amrr_start(struct ural_softc *sc, struct ieee80211_node *ni)
 2120 {
 2121         int i;
 2123         /* clear statistic registers (STA_CSR0 to STA_CSR10) */
ural_read_multi(sc, RAL_STA_CSR0, sc->sta, sizeof sc->sta);
ieee80211_amrr_node_init(&sc->amrr, &sc->amn);
 2128         /* set rate to some reasonable initial value */
 2129         for (i = ni->ni_rates.rs_nrates - 1;
i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72;
i--);
ni->ni_txrate = i;
timeout_add(&sc->amrr_to, hz);
 2135 }
 2137 void
ural_amrr_timeout(void *arg)
 2139 {
 2140         struct ural_softc *sc = arg;
usb_device_request_t req;
 2142         int s;
s = splusb();
 2146         /*
 2147          * Asynchronously read statistic registers (cleared by read).
 2148          */
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = RAL_READ_MULTI_MAC;
USETW(req.wValue, 0);
USETW(req.wIndex, RAL_STA_CSR0);
USETW(req.wLength, sizeof sc->sta);
usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc,
USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0,
ural_amrr_update);
 2158         (void)usbd_transfer(sc->amrr_xfer);
splx(s);
 2161 }
 2163 void
ural_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv,
usbd_status status)
 2166 {
 2167         struct ural_softc *sc = (struct ural_softc *)priv;
 2168         struct ifnet *ifp = &sc->sc_ic.ic_if;
 2170         if (status != USBD_NORMAL_COMPLETION) {
printf("%s: could not retrieve Tx statistics - cancelling "
 2172                     "automatic rate control\n", sc->sc_dev.dv_xname);
 2173                 return;
 2174         }
 2176         /* count TX retry-fail as Tx errors */
ifp->if_oerrors += letoh16(sc->sta[9]);
sc->amn.amn_retrycnt =
letoh16(sc->sta[7]) +       /* TX one-retry ok count */
letoh16(sc->sta[8]) +       /* TX more-retry ok count */
letoh16(sc->sta[9]);        /* TX retry-fail count */
sc->amn.amn_txcnt =
sc->amn.amn_retrycnt +
letoh16(sc->sta[6]);        /* TX no-retry ok count */
ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn);
timeout_add(&sc->amrr_to, hz);
 2191 }
 2193 int
ural_activate(struct device *self, enum devact act)
 2195 {
 2196         switch (act) {
 2197         case DVACT_ACTIVATE:
 2198                 break;
 2200         case DVACT_DEACTIVATE:
 2201                 break;
 2202         }
 2204         return 0;
 2205 }