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NetBSD/sys/dev/ic/awi.c

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/* $NetBSD: awi.c,v 1.19 2000/06/09 14:36:25 onoe Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Bill Sommerfeld
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Driver for AMD 802.11 firmware.
* Uses am79c930 chip driver to talk to firmware running on the am79c930.
*
* More-or-less a generic ethernet-like if driver, with 802.11 gorp added.
*/
/*
* todo:
* - flush tx queue on resynch.
* - clear oactive on "down".
* - rewrite copy-into-mbuf code
* - mgmt state machine gets stuck retransmitting assoc requests.
* - multicast filter.
* - fix device reset so it's more likely to work
* - show status goo through ifmedia.
*
* more todo:
* - deal with more 802.11 frames.
* - send reassoc request
* - deal with reassoc response
* - send/deal with disassociation
* - deal with "full" access points (no room for me).
* - power save mode
*
* later:
* - SSID preferences
* - need ioctls for poking at the MIBs
* - implement ad-hoc mode (including bss creation).
* - decide when to do "ad hoc" vs. infrastructure mode (IFF_LINK flags?)
* (focus on inf. mode since that will be needed for ietf)
* - deal with DH vs. FH versions of the card
* - deal with faster cards (2mb/s)
* - ?WEP goo (mmm, rc4) (it looks not particularly useful).
* - ifmedia revision.
* - common 802.11 mibish things.
* - common 802.11 media layer.
*/
/*
* Driver for AMD 802.11 PCnetMobile firmware.
* Uses am79c930 chip driver to talk to firmware running on the am79c930.
*
* The initial version of the driver was written by
* Bill Sommerfeld <sommerfeld@netbsd.org>.
* Then the driver module completely rewritten to support cards with DS phy
* and to support adhoc mode by Atsushi Onoe <onoe@netbsd.org>
*/
#include "opt_awi.h"
#include "opt_inet.h"
#if defined(__FreeBSD__) && __FreeBSD__ >= 4
#include "bpf.h"
#define NBPFILTER NBPF
#else
#include "bpfilter.h"
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#if defined(__FreeBSD__) && __FreeBSD__ >= 4
#include <sys/bus.h>
#else
#include <sys/device.h>
#endif
#include <net/if.h>
#include <net/if_dl.h>
#ifdef __FreeBSD__
#include <net/ethernet.h>
#else
#include <net/if_ether.h>
#endif
#include <net/if_media.h>
#include <net/if_llc.h>
#include <net/if_ieee80211.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#ifdef __NetBSD__
#include <netinet/if_inarp.h>
#else
#include <netinet/if_ether.h>
#endif
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#include <machine/cpu.h>
#include <machine/bus.h>
#ifdef __NetBSD__
#include <machine/intr.h>
#endif
#ifdef __FreeBSD__
#include <machine/clock.h>
#endif
#ifdef __NetBSD__
#include <dev/ic/am79c930reg.h>
#include <dev/ic/am79c930var.h>
#include <dev/ic/awireg.h>
#include <dev/ic/awivar.h>
#endif
#ifdef __FreeBSD__
#include <dev/awi/am79c930reg.h>
#include <dev/awi/am79c930var.h>
#include <dev/awi/awireg.h>
#include <dev/awi/awivar.h>
#endif
static int awi_ioctl __P((struct ifnet *ifp, u_long cmd, caddr_t data));
#ifdef IFM_IEEE80211
static int awi_media_rate2opt __P((struct awi_softc *sc, int rate));
static int awi_media_opt2rate __P((struct awi_softc *sc, int opt));
static int awi_media_change __P((struct ifnet *ifp));
static void awi_media_status __P((struct ifnet *ifp, struct ifmediareq *imr));
#endif
static void awi_watchdog __P((struct ifnet *ifp));
static void awi_start __P((struct ifnet *ifp));
static void awi_txint __P((struct awi_softc *sc));
static struct mbuf * awi_fix_txhdr __P((struct awi_softc *sc, struct mbuf *m0));
static struct mbuf * awi_fix_rxhdr __P((struct awi_softc *sc, struct mbuf *m0));
static void awi_input __P((struct awi_softc *sc, struct mbuf *m, u_int32_t rxts, u_int8_t rssi));
static void awi_rxint __P((struct awi_softc *sc));
static struct mbuf * awi_devget __P((struct awi_softc *sc, u_int32_t off, u_int16_t len));
static int awi_init_hw __P((struct awi_softc *sc));
static int awi_init_mibs __P((struct awi_softc *sc));
static int awi_init_txrx __P((struct awi_softc *sc));
static void awi_stop_txrx __P((struct awi_softc *sc));
static int awi_start_scan __P((struct awi_softc *sc));
static int awi_next_scan __P((struct awi_softc *sc));
static void awi_stop_scan __P((struct awi_softc *sc));
static void awi_recv_beacon __P((struct awi_softc *sc, struct mbuf *m0, u_int32_t rxts, u_int8_t rssi));
static int awi_set_ss __P((struct awi_softc *sc));
static void awi_try_sync __P((struct awi_softc *sc));
static void awi_sync_done __P((struct awi_softc *sc));
static void awi_send_deauth __P((struct awi_softc *sc));
static void awi_send_auth __P((struct awi_softc *sc));
static void awi_recv_auth __P((struct awi_softc *sc, struct mbuf *m0));
static void awi_send_asreq __P((struct awi_softc *sc, int reassoc));
static void awi_recv_asresp __P((struct awi_softc *sc, struct mbuf *m0));
static int awi_mib __P((struct awi_softc *sc, u_int8_t cmd, u_int8_t mib));
static int awi_cmd_scan __P((struct awi_softc *sc));
static int awi_cmd __P((struct awi_softc *sc, u_int8_t cmd));
static void awi_cmd_done __P((struct awi_softc *sc));
static int awi_next_txd __P((struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t*ntxdp));
static int awi_lock __P((struct awi_softc *sc));
static void awi_unlock __P((struct awi_softc *sc));
static int awi_intr_lock __P((struct awi_softc *sc));
static void awi_intr_unlock __P((struct awi_softc *sc));
static int awi_cmd_wait __P((struct awi_softc *sc));
#ifdef AWI_DEBUG
static void awi_dump_pkt __P((struct awi_softc *sc, struct mbuf *m, u_int8_t rssi));
int awi_verbose = 0;
int awi_dump = 0;
#define AWI_DUMP_MASK(fc0) (1 << (((fc0) & IEEE80211_FC0_SUBTYPE_MASK) >> 4))
int awi_dump_mask = AWI_DUMP_MASK(IEEE80211_FC0_SUBTYPE_BEACON);
int awi_dump_hdr = 0;
int awi_dump_len = 28;
#endif
#if NBPFILTER > 0
#define AWI_BPF_NORM 0
#define AWI_BPF_RAW 1
#ifdef __FreeBSD__
#define AWI_BPF_MTAP(sc, m, raw) do { \
if ((sc)->sc_ifp->if_bpf && (sc)->sc_rawbpf == (raw)) \
bpf_mtap((sc)->sc_ifp, (m)); \
} while (0);
#else
#define AWI_BPF_MTAP(sc, m, raw) do { \
if ((sc)->sc_ifp->if_bpf && (sc)->sc_rawbpf == (raw)) \
bpf_mtap((sc)->sc_ifp->if_bpf, (m)); \
} while (0);
#endif
#else
#define AWI_BPF_MTAP(sc, m, raw)
#endif
#ifndef llc_snap
#define llc_snap llc_un.type_snap
#endif
#ifdef __FreeBSD__
#if __FreeBSD__ >= 4
devclass_t awi_devclass;
#endif
/* NetBSD compatible functions */
static char * ether_sprintf __P((u_int8_t *));
static char *
ether_sprintf(enaddr)
u_int8_t *enaddr;
{
static char strbuf[18];
sprintf(strbuf, "%6D", enaddr, ":");
return strbuf;
}
#endif
int
awi_attach(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
int s;
int error;
#ifdef IFM_IEEE80211
int i;
u_int8_t *phy_rates;
int mword;
struct ifmediareq imr;
#endif
s = splnet();
/*
* Even if we can sleep in initialization state,
* all other processes (e.g. ifconfig) have to wait for
* completion of attaching interface.
*/
sc->sc_busy = 1;
sc->sc_status = AWI_ST_INIT;
TAILQ_INIT(&sc->sc_scan);
error = awi_init_hw(sc);
if (error) {
sc->sc_invalid = 1;
splx(s);
return error;
}
error = awi_init_mibs(sc);
splx(s);
if (error) {
sc->sc_invalid = 1;
return error;
}
ifp->if_softc = sc;
ifp->if_start = awi_start;
ifp->if_ioctl = awi_ioctl;
ifp->if_watchdog = awi_watchdog;
ifp->if_mtu = ETHERMTU;
ifp->if_hdrlen = sizeof(struct ieee80211_frame) +
sizeof(struct ether_header);
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
#ifdef IFF_NOTRAILERS
ifp->if_flags |= IFF_NOTRAILERS;
#endif
#ifdef __NetBSD__
memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ);
#endif
#ifdef __FreeBSD__
ifp->if_output = ether_output;
ifp->if_snd.ifq_maxlen = ifqmaxlen;
memcpy(sc->sc_ec.ac_enaddr, sc->sc_mib_addr.aMAC_Address,
ETHER_ADDR_LEN);
#endif
awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN);
printf("%s: IEEE802.11 %s %dMbps (firmware %s)\n",
sc->sc_dev.dv_xname,
sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH ? "FH" : "DS",
sc->sc_tx_rate / 10, sc->sc_banner);
printf("%s: address %s\n",
sc->sc_dev.dv_xname, ether_sprintf(sc->sc_mib_addr.aMAC_Address));
if_attach(ifp);
#ifdef __FreeBSD__
ether_ifattach(ifp);
#if NBPFILTER > 0
bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
#endif
#else
ether_ifattach(ifp, sc->sc_mib_addr.aMAC_Address);
#if NBPFILTER > 0
bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header));
#endif
#endif
#ifdef IFM_IEEE80211
ifmedia_init(&sc->sc_media, 0, awi_media_change, awi_media_status);
phy_rates = sc->sc_mib_phy.aSuprt_Data_Rates;
for (i = 0; i < phy_rates[1]; i++) {
mword = awi_media_rate2opt(sc, AWI_80211_RATE(phy_rates[2 + i]));
if (mword == 0)
continue;
mword |= IFM_IEEE80211;
ifmedia_add(&sc->sc_media, mword, 0, NULL);
ifmedia_add(&sc->sc_media,
mword | IFM_IEEE80211_ADHOC, 0, NULL);
ifmedia_add(&sc->sc_media,
mword | IFM_IEEE80211_ADHOC | IFM_FLAG0, 0, NULL);
}
awi_media_status(ifp, &imr);
ifmedia_set(&sc->sc_media, imr.ifm_active);
#endif
/* ready to accept ioctl */
awi_unlock(sc);
/* Attach is successful. */
sc->sc_attached = 1;
return 0;
}
#ifdef __NetBSD__
int
awi_detach(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
int s;
/* Succeed if there is no work to do. */
if (!sc->sc_attached)
return (0);
s = splnet();
sc->sc_invalid = 1;
awi_stop(sc);
while (sc->sc_sleep_cnt > 0) {
wakeup(sc);
(void)tsleep(sc, PWAIT, "awidet", 1);
}
if (sc->sc_wep_ctx != NULL)
free(sc->sc_wep_ctx, M_DEVBUF);
#if NBPFILTER > 0
bpfdetach(ifp);
#endif
#ifdef IFM_IEEE80211
ifmedia_delete_instance(&sc->sc_media, IFM_INST_ANY);
#endif
ether_ifdetach(ifp);
if_detach(ifp);
if (sc->sc_enabled) {
if (sc->sc_disable)
(*sc->sc_disable)(sc);
sc->sc_enabled = 0;
}
splx(s);
return 0;
}
int
awi_activate(self, act)
struct device *self;
enum devact act;
{
struct awi_softc *sc = (struct awi_softc *)self;
int s, error = 0;
s = splnet();
switch (act) {
case DVACT_ACTIVATE:
error = EOPNOTSUPP;
break;
case DVACT_DEACTIVATE:
sc->sc_invalid = 1;
if (sc->sc_ifp)
if_deactivate(sc->sc_ifp);
break;
}
splx(s);
return error;
}
void
awi_power(sc, why)
struct awi_softc *sc;
int why;
{
int s;
int ocansleep;
if (!sc->sc_enabled)
return;
s = splnet();
ocansleep = sc->sc_cansleep;
sc->sc_cansleep = 0;
#ifdef needtobefixed /*ONOE*/
if (why == PWR_RESUME) {
sc->sc_enabled = 0;
awi_init(sc);
(void)awi_intr(sc);
} else {
awi_stop(sc);
if (sc->sc_disable)
(*sc->sc_disable)(sc);
}
#endif
sc->sc_cansleep = ocansleep;
splx(s);
}
#endif /* __NetBSD__ */
static int
awi_ioctl(ifp, cmd, data)
struct ifnet *ifp;
u_long cmd;
caddr_t data;
{
struct awi_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
struct ifaddr *ifa = (struct ifaddr *)data;
int s, error;
size_t nwidlen;
u_int8_t nwid[IEEE80211_NWID_LEN + 1];
u_int8_t *p;
s = splnet();
/* serialize ioctl */
error = awi_lock(sc);
if (error)
goto cantlock;
switch (cmd) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
arp_ifinit((void *)ifp, ifa);
break;
#endif
}
/* FALLTHROUGH */
case SIOCSIFFLAGS:
sc->sc_format_llc = !(ifp->if_flags & IFF_LINK0);
if (!(ifp->if_flags & IFF_UP)) {
if (sc->sc_enabled) {
awi_stop(sc);
if (sc->sc_disable)
(*sc->sc_disable)(sc);
sc->sc_enabled = 0;
}
break;
}
error = awi_init(sc);
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
#ifdef __FreeBSD__
error = ENETRESET; /*XXX*/
#else
error = (cmd == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->sc_ec) :
ether_delmulti(ifr, &sc->sc_ec);
#endif
/*
* Do not rescan BSS. Rather, just reset multicast filter.
*/
if (error == ENETRESET) {
if (sc->sc_enabled)
error = awi_init(sc);
else
error = 0;
}
break;
case SIOCSIFMTU:
if (ifr->ifr_mtu > ETHERMTU)
error = EINVAL;
else
ifp->if_mtu = ifr->ifr_mtu;
break;
case SIOCS80211NWID:
error = copyinstr(ifr->ifr_data, nwid, sizeof(nwid), &nwidlen);
if (error)
break;
nwidlen--; /* eliminate trailing '\0' */
if (nwidlen > IEEE80211_NWID_LEN) {
error = EINVAL;
break;
}
if (sc->sc_mib_mac.aDesired_ESS_ID[1] == nwidlen &&
memcmp(&sc->sc_mib_mac.aDesired_ESS_ID[2], nwid,
nwidlen) == 0)
break;
memset(sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE);
sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID;
sc->sc_mib_mac.aDesired_ESS_ID[1] = nwidlen;
memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], nwid, nwidlen);
if (sc->sc_enabled) {
awi_stop(sc);
error = awi_init(sc);
}
break;
case SIOCG80211NWID:
if (ifp->if_flags & IFF_RUNNING)
p = sc->sc_bss.essid;
else
p = sc->sc_mib_mac.aDesired_ESS_ID;
error = copyout(p + 2, ifr->ifr_data, IEEE80211_NWID_LEN);
break;
#ifdef IFM_IEEE80211
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd);
break;
#endif
default:
error = awi_wicfg(ifp, cmd, data);
break;
}
awi_unlock(sc);
cantlock:
splx(s);
return error;
}
#ifdef IFM_IEEE80211
static int
awi_media_rate2opt(sc, rate)
struct awi_softc *sc;
int rate;
{
int mword;
mword = 0;
switch (rate) {
case 10:
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH)
mword = IFM_IEEE80211_FH1;
else
mword = IFM_IEEE80211_DS1;
break;
case 20:
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH)
mword = IFM_IEEE80211_FH2;
else
mword = IFM_IEEE80211_DS2;
break;
case 55:
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_DS)
mword = IFM_IEEE80211_DS5;
break;
case 110:
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_DS)
mword = IFM_IEEE80211_DS11;
break;
}
return mword;
}
static int
awi_media_opt2rate(sc, opt)
struct awi_softc *sc;
int opt;
{
int rate;
rate = 0;
switch (IFM_SUBTYPE(opt)) {
case IFM_IEEE80211_FH1:
case IFM_IEEE80211_FH2:
if (sc->sc_mib_phy.IEEE_PHY_Type != AWI_PHY_TYPE_FH)
return 0;
break;
case IFM_IEEE80211_DS1:
case IFM_IEEE80211_DS2:
case IFM_IEEE80211_DS5:
case IFM_IEEE80211_DS11:
if (sc->sc_mib_phy.IEEE_PHY_Type != AWI_PHY_TYPE_DS)
return 0;
break;
}
switch (IFM_SUBTYPE(opt)) {
case IFM_IEEE80211_FH1:
case IFM_IEEE80211_DS1:
rate = 10;
break;
case IFM_IEEE80211_FH2:
case IFM_IEEE80211_DS2:
rate = 20;
break;
case IFM_IEEE80211_DS5:
rate = 55;
break;
case IFM_IEEE80211_DS11:
rate = 110;
break;
}
return rate;
}
/*
* Called from ifmedia_ioctl via awi_ioctl with lock obtained.
*/
static int
awi_media_change(ifp)
struct ifnet *ifp;
{
struct awi_softc *sc = ifp->if_softc;
struct ifmedia_entry *ime;
u_int8_t *phy_rates;
int i, rate, error;
error = 0;
ime = sc->sc_media.ifm_cur;
rate = awi_media_opt2rate(sc, ime->ifm_media);
if (rate == 0)
return EINVAL;
if (rate != sc->sc_tx_rate) {
phy_rates = sc->sc_mib_phy.aSuprt_Data_Rates;
for (i = 0; i < phy_rates[1]; i++) {
if (rate == AWI_80211_RATE(phy_rates[2 + i]))
break;
}
if (i == phy_rates[1])
return EINVAL;
}
if (ime->ifm_media & IFM_IEEE80211_ADHOC) {
sc->sc_mib_local.Network_Mode = 0;
sc->sc_no_bssid = (ime->ifm_media & IFM_FLAG0) ? 1 : 0;
} else {
sc->sc_mib_local.Network_Mode = 1;
}
if (sc->sc_enabled) {
awi_stop(sc);
error = awi_init(sc);
}
return error;
}
static void
awi_media_status(ifp, imr)
struct ifnet *ifp;
struct ifmediareq *imr;
{
struct awi_softc *sc = ifp->if_softc;
imr->ifm_status = IFM_AVALID;
if (ifp->if_flags & IFF_RUNNING)
imr->ifm_status |= IFM_ACTIVE;
imr->ifm_active = IFM_IEEE80211;
imr->ifm_active |= awi_media_rate2opt(sc, sc->sc_tx_rate);
if (sc->sc_mib_local.Network_Mode == 0) {
imr->ifm_active |= IFM_IEEE80211_ADHOC;
if (sc->sc_no_bssid)
imr->ifm_active |= IFM_FLAG0;
}
}
#endif /* IFM_IEEE80211 */
int
awi_intr(arg)
void *arg;
{
struct awi_softc *sc = arg;
u_int16_t status;
int error, handled = 0, ocansleep;
if (!sc->sc_enabled || !sc->sc_enab_intr || sc->sc_invalid)
return 0;
am79c930_gcr_setbits(&sc->sc_chip,
AM79C930_GCR_DISPWDN | AM79C930_GCR_ECINT);
awi_write_1(sc, AWI_DIS_PWRDN, 1);
ocansleep = sc->sc_cansleep;
sc->sc_cansleep = 0;
for (;;) {
error = awi_intr_lock(sc);
if (error)
break;
status = awi_read_1(sc, AWI_INTSTAT);
awi_write_1(sc, AWI_INTSTAT, 0);
awi_write_1(sc, AWI_INTSTAT, 0);
status |= awi_read_1(sc, AWI_INTSTAT2) << 8;
awi_write_1(sc, AWI_INTSTAT2, 0);
DELAY(10);
awi_intr_unlock(sc);
if (!sc->sc_cmd_inprog)
status &= ~AWI_INT_CMD; /* make sure */
if (status == 0)
break;
handled = 1;
if (status & AWI_INT_RX)
awi_rxint(sc);
if (status & AWI_INT_TX)
awi_txint(sc);
if (status & AWI_INT_CMD)
awi_cmd_done(sc);
if (status & AWI_INT_SCAN_CMPLT) {
if (sc->sc_status == AWI_ST_SCAN &&
sc->sc_mgt_timer > 0)
(void)awi_next_scan(sc);
}
}
sc->sc_cansleep = ocansleep;
am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN);
awi_write_1(sc, AWI_DIS_PWRDN, 0);
return handled;
}
int
awi_init(sc)
struct awi_softc *sc;
{
int error, ostatus;
int n;
struct ifnet *ifp = sc->sc_ifp;
#ifdef __FreeBSD__
struct ifmultiaddr *ifma;
#else
struct ether_multi *enm;
struct ether_multistep step;
#endif
/* reinitialize muticast filter */
n = 0;
ifp->if_flags |= IFF_ALLMULTI;
sc->sc_mib_local.Accept_All_Multicast_Dis = 0;
if (ifp->if_flags & IFF_PROMISC) {
sc->sc_mib_mac.aPromiscuous_Enable = 1;
goto set_mib;
}
sc->sc_mib_mac.aPromiscuous_Enable = 0;
#ifdef __FreeBSD__
if (ifp->if_amcount != 0)
goto set_mib;
for (ifma = LIST_FIRST(&ifp->if_multiaddrs); ifma != NULL;
ifma = LIST_NEXT(ifma, ifma_link)) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
if (n == AWI_GROUP_ADDR_SIZE)
goto set_mib;
memcpy(sc->sc_mib_addr.aGroup_Addresses[n],
LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
ETHER_ADDR_LEN);
n++;
}
#else
ETHER_FIRST_MULTI(step, &sc->sc_ec, enm);
while (enm != NULL) {
if (n == AWI_GROUP_ADDR_SIZE ||
memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)
!= 0)
goto set_mib;
memcpy(sc->sc_mib_addr.aGroup_Addresses[n], enm->enm_addrlo,
ETHER_ADDR_LEN);
n++;
ETHER_NEXT_MULTI(step, enm);
}
#endif
for (; n < AWI_GROUP_ADDR_SIZE; n++)
memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, ETHER_ADDR_LEN);
ifp->if_flags &= ~IFF_ALLMULTI;
sc->sc_mib_local.Accept_All_Multicast_Dis = 1;
set_mib:
if (!sc->sc_enabled) {
sc->sc_enabled = 1;
if (sc->sc_enable)
(*sc->sc_enable)(sc);
sc->sc_status = AWI_ST_INIT;
error = awi_init_hw(sc);
if (error)
return error;
}
ostatus = sc->sc_status;
sc->sc_status = AWI_ST_INIT;
if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL)) != 0 ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR)) != 0 ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC)) != 0 ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT)) != 0 ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY)) != 0) {
awi_stop(sc);
return error;
}
if (ifp->if_flags & IFF_RUNNING)
sc->sc_status = AWI_ST_RUNNING;
else {
if (ostatus == AWI_ST_INIT) {
error = awi_init_txrx(sc);
if (error)
return error;
}
error = awi_start_scan(sc);
}
return error;
}
void
awi_stop(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
struct awi_bss *bp;
struct mbuf *m;
sc->sc_status = AWI_ST_INIT;
if (!sc->sc_invalid) {
(void)awi_cmd_wait(sc);
if (sc->sc_mib_local.Network_Mode &&
sc->sc_status > AWI_ST_AUTH)
awi_send_deauth(sc);
awi_stop_txrx(sc);
}
ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE);
ifp->if_timer = 0;
sc->sc_tx_timer = sc->sc_rx_timer = sc->sc_mgt_timer = 0;
for (;;) {
IF_DEQUEUE(&sc->sc_mgtq, m);
if (m == NULL)
break;
m_freem(m);
}
for (;;) {
IF_DEQUEUE(&ifp->if_snd, m);
if (m == NULL)
break;
m_freem(m);
}
while ((bp = TAILQ_FIRST(&sc->sc_scan)) != NULL) {
TAILQ_REMOVE(&sc->sc_scan, bp, list);
free(bp, M_DEVBUF);
}
}
static void
awi_watchdog(ifp)
struct ifnet *ifp;
{
struct awi_softc *sc = ifp->if_softc;
int ocansleep;
if (sc->sc_invalid) {
ifp->if_timer = 0;
return;
}
ocansleep = sc->sc_cansleep;
sc->sc_cansleep = 0;
if (sc->sc_tx_timer && --sc->sc_tx_timer == 0) {
printf("%s: transmit timeout\n", sc->sc_dev.dv_xname);
awi_txint(sc);
}
if (sc->sc_rx_timer && --sc->sc_rx_timer == 0) {
printf("%s: no recent beacons from %s; rescanning\n",
sc->sc_dev.dv_xname, ether_sprintf(sc->sc_bss.bssid));
awi_start_scan(sc);
}
if (sc->sc_mgt_timer && --sc->sc_mgt_timer == 0) {
switch (sc->sc_status) {
case AWI_ST_SCAN:
awi_stop_scan(sc);
break;
case AWI_ST_AUTH:
case AWI_ST_ASSOC:
/* restart scan */
awi_start_scan(sc);
break;
default:
break;
}
}
if (sc->sc_tx_timer == 0 && sc->sc_rx_timer == 0 &&
sc->sc_mgt_timer == 0)
ifp->if_timer = 0;
else
ifp->if_timer = 1;
sc->sc_cansleep = ocansleep;
}
static void
awi_start(ifp)
struct ifnet *ifp;
{
struct awi_softc *sc = ifp->if_softc;
struct mbuf *m0, *m;
u_int32_t txd, frame, ntxd;
u_int8_t rate;
int len, sent = 0;
for (;;) {
txd = sc->sc_txnext;
IF_DEQUEUE(&sc->sc_mgtq, m0);
if (m0 != NULL) {
if (awi_next_txd(sc, m0->m_pkthdr.len, &frame, &ntxd)) {
IF_PREPEND(&sc->sc_mgtq, m0);
ifp->if_flags |= IFF_OACTIVE;
break;
}
} else {
if (!(ifp->if_flags & IFF_RUNNING))
break;
IF_DEQUEUE(&ifp->if_snd, m0);
if (m0 == NULL)
break;
len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame);
if (sc->sc_format_llc)
len += sizeof(struct llc) -
sizeof(struct ether_header);
if (sc->sc_wep_algo != NULL)
len += IEEE80211_WEP_IVLEN +
IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN;
if (awi_next_txd(sc, len, &frame, &ntxd)) {
IF_PREPEND(&ifp->if_snd, m0);
ifp->if_flags |= IFF_OACTIVE;
break;
}
AWI_BPF_MTAP(sc, m0, AWI_BPF_NORM);
m0 = awi_fix_txhdr(sc, m0);
if (sc->sc_wep_algo != NULL && m0 != NULL)
m0 = awi_wep_encrypt(sc, m0, 1);
if (m0 == NULL) {
ifp->if_oerrors++;
continue;
}
ifp->if_opackets++;
}
AWI_BPF_MTAP(sc, m0, AWI_BPF_RAW);
len = 0;
for (m = m0; m != NULL; m = m->m_next) {
awi_write_bytes(sc, frame + len, mtod(m, u_int8_t *),
m->m_len);
len += m->m_len;
}
m_freem(m0);
rate = sc->sc_tx_rate; /*XXX*/
awi_write_1(sc, ntxd + AWI_TXD_STATE, 0);
awi_write_4(sc, txd + AWI_TXD_START, frame);
awi_write_4(sc, txd + AWI_TXD_NEXT, ntxd);
awi_write_4(sc, txd + AWI_TXD_LENGTH, len);
awi_write_1(sc, txd + AWI_TXD_RATE, rate);
awi_write_4(sc, txd + AWI_TXD_NDA, 0);
awi_write_4(sc, txd + AWI_TXD_NRA, 0);
awi_write_1(sc, txd + AWI_TXD_STATE, AWI_TXD_ST_OWN);
sc->sc_txnext = ntxd;
sent++;
}
if (sent) {
if (sc->sc_tx_timer == 0)
sc->sc_tx_timer = 5;
ifp->if_timer = 1;
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_start: sent %d txdone %d txnext %d txbase %d txend %d\n", sent, sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend);
#endif
}
}
static void
awi_txint(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
u_int8_t flags;
while (sc->sc_txdone != sc->sc_txnext) {
flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE);
if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE))
break;
if (flags & AWI_TXD_ST_ERROR)
ifp->if_oerrors++;
sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) &
0x7fff;
}
sc->sc_tx_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_txint: txdone %d txnext %d txbase %d txend %d\n",
sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend);
#endif
awi_start(ifp);
}
static struct mbuf *
awi_fix_txhdr(sc, m0)
struct awi_softc *sc;
struct mbuf *m0;
{
struct ether_header eh;
struct ieee80211_frame *wh;
struct llc *llc;
if (m0->m_len < sizeof(eh)) {
m0 = m_pullup(m0, sizeof(eh));
if (m0 == NULL)
return NULL;
}
memcpy(&eh, mtod(m0, caddr_t), sizeof(eh));
if (sc->sc_format_llc) {
m_adj(m0, sizeof(struct ether_header) - sizeof(struct llc));
llc = mtod(m0, struct llc *);
llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP;
llc->llc_control = LLC_UI;
llc->llc_snap.org_code[0] = llc->llc_snap.org_code[1] =
llc->llc_snap.org_code[2] = 0;
llc->llc_snap.ether_type = eh.ether_type;
}
M_PREPEND(m0, sizeof(struct ieee80211_frame), M_DONTWAIT);
if (m0 == NULL)
return NULL;
wh = mtod(m0, struct ieee80211_frame *);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA;
LE_WRITE_2(wh->i_dur, 0);
LE_WRITE_2(wh->i_seq, 0);
if (sc->sc_mib_local.Network_Mode) {
wh->i_fc[1] = IEEE80211_FC1_DIR_TODS;
memcpy(wh->i_addr1, sc->sc_bss.bssid, ETHER_ADDR_LEN);
memcpy(wh->i_addr2, eh.ether_shost, ETHER_ADDR_LEN);
memcpy(wh->i_addr3, eh.ether_dhost, ETHER_ADDR_LEN);
} else {
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
memcpy(wh->i_addr1, eh.ether_dhost, ETHER_ADDR_LEN);
memcpy(wh->i_addr2, eh.ether_shost, ETHER_ADDR_LEN);
memcpy(wh->i_addr3, sc->sc_bss.bssid, ETHER_ADDR_LEN);
}
return m0;
}
static struct mbuf *
awi_fix_rxhdr(sc, m0)
struct awi_softc *sc;
struct mbuf *m0;
{
struct ieee80211_frame wh;
struct ether_header *eh;
struct llc *llc;
if (m0->m_len < sizeof(wh)) {
m_freem(m0);
return NULL;
}
llc = (struct llc *)(mtod(m0, caddr_t) + sizeof(wh));
if (llc->llc_dsap == LLC_SNAP_LSAP &&
llc->llc_ssap == LLC_SNAP_LSAP &&
llc->llc_control == LLC_UI &&
llc->llc_snap.org_code[0] == 0 &&
llc->llc_snap.org_code[1] == 0 &&
llc->llc_snap.org_code[2] == 0) {
memcpy(&wh, mtod(m0, caddr_t), sizeof(wh));
m_adj(m0, sizeof(wh) + sizeof(*llc) - sizeof(*eh));
eh = mtod(m0, struct ether_header *);
switch (wh.i_fc[1] & IEEE80211_FC1_DIR_MASK) {
case IEEE80211_FC1_DIR_NODS:
memcpy(eh->ether_dhost, wh.i_addr1, ETHER_ADDR_LEN);
memcpy(eh->ether_shost, wh.i_addr2, ETHER_ADDR_LEN);
break;
case IEEE80211_FC1_DIR_TODS:
memcpy(eh->ether_dhost, wh.i_addr3, ETHER_ADDR_LEN);
memcpy(eh->ether_shost, wh.i_addr2, ETHER_ADDR_LEN);
break;
case IEEE80211_FC1_DIR_FROMDS:
memcpy(eh->ether_dhost, wh.i_addr1, ETHER_ADDR_LEN);
memcpy(eh->ether_shost, wh.i_addr3, ETHER_ADDR_LEN);
break;
case IEEE80211_FC1_DIR_DSTODS:
m_freem(m0);
return NULL;
}
} else {
/* assuming ethernet encapsulation, just strip 802.11 header */
m_adj(m0, sizeof(wh));
}
return m0;
}
static void
awi_input(sc, m, rxts, rssi)
struct awi_softc *sc;
struct mbuf *m;
u_int32_t rxts;
u_int8_t rssi;
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211_frame *wh;
#ifndef __NetBSD__
struct ether_header *eh;
#endif
/* trim CRC here for WEP can find its own CRC at the end of packet. */
m_adj(m, -ETHER_CRC_LEN);
AWI_BPF_MTAP(sc, m, AWI_BPF_RAW);
wh = mtod(m, struct ieee80211_frame *);
if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) !=
IEEE80211_FC0_VERSION_0) {
printf("%s; receive packet with wrong version: %x\n",
sc->sc_dev.dv_xname, wh->i_fc[0]);
m_freem(m);
ifp->if_ierrors++;
return;
}
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
m = awi_wep_encrypt(sc, m, 0);
if (m == NULL) {
ifp->if_ierrors++;
return;
}
wh = mtod(m, struct ieee80211_frame *);
}
#ifdef AWI_DEBUG
if (awi_dump)
awi_dump_pkt(sc, m, rssi);
#endif
if ((sc->sc_mib_local.Network_Mode || !sc->sc_no_bssid) &&
sc->sc_status == AWI_ST_RUNNING) {
if (memcmp(wh->i_addr2, sc->sc_bss.bssid, ETHER_ADDR_LEN) == 0) {
sc->sc_rx_timer = 10;
sc->sc_bss.rssi = rssi;
}
}
switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
case IEEE80211_FC0_TYPE_DATA:
if (sc->sc_mib_local.Network_Mode) {
if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) !=
IEEE80211_FC1_DIR_FROMDS) {
m_freem(m);
return;
}
} else {
if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) !=
IEEE80211_FC1_DIR_NODS) {
m_freem(m);
return;
}
}
m = awi_fix_rxhdr(sc, m);
if (m == NULL) {
ifp->if_ierrors++;
break;
}
ifp->if_ipackets++;
#if !(defined(__FreeBSD__) && __FreeBSD__ >= 4)
AWI_BPF_MTAP(sc, m, AWI_BPF_NORM);
#endif
#ifdef __NetBSD__
(*ifp->if_input)(ifp, m);
#else
eh = mtod(m, struct ether_header *);
m_adj(m, sizeof(*eh));
ether_input(ifp, eh, m);
#endif
break;
case IEEE80211_FC0_TYPE_MGT:
if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) !=
IEEE80211_FC1_DIR_NODS) {
m_freem(m);
return;
}
switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
case IEEE80211_FC0_SUBTYPE_BEACON:
awi_recv_beacon(sc, m, rxts, rssi);
break;
case IEEE80211_FC0_SUBTYPE_AUTH:
awi_recv_auth(sc, m);
break;
case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
awi_recv_asresp(sc, m);
break;
case IEEE80211_FC0_SUBTYPE_DEAUTH:
if (sc->sc_mib_local.Network_Mode)
awi_send_auth(sc);
break;
case IEEE80211_FC0_SUBTYPE_DISASSOC:
if (sc->sc_mib_local.Network_Mode)
awi_send_asreq(sc, 1);
break;
}
m_freem(m);
break;
case IEEE80211_FC0_TYPE_CTL:
default:
/* should not come here */
m_freem(m);
break;
}
}
static void
awi_rxint(sc)
struct awi_softc *sc;
{
u_int8_t state, rate, rssi;
u_int16_t len;
u_int32_t frame, next, rxts, rxoff;
struct mbuf *m;
rxoff = sc->sc_rxdoff;
for (;;) {
state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE);
if (state & AWI_RXD_ST_OWN)
break;
if (!(state & AWI_RXD_ST_CONSUMED)) {
if (state & AWI_RXD_ST_RXERROR)
sc->sc_ifp->if_ierrors++;
else {
len = awi_read_2(sc, rxoff + AWI_RXD_LEN);
rate = awi_read_1(sc, rxoff + AWI_RXD_RATE);
rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI);
frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 0x7fff;
rxts = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME);
m = awi_devget(sc, frame, len);
if (state & AWI_RXD_ST_LF)
awi_input(sc, m, rxts, rssi);
else
sc->sc_rxpend = m;
}
state |= AWI_RXD_ST_CONSUMED;
awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state);
}
next = awi_read_4(sc, rxoff + AWI_RXD_NEXT);
if (next & AWI_RXD_NEXT_LAST)
break;
/* make sure the next pointer is correct */
if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT))
break;
state |= AWI_RXD_ST_OWN;
awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state);
rxoff = next & 0x7fff;
}
sc->sc_rxdoff = rxoff;
}
static struct mbuf *
awi_devget(sc, off, len)
struct awi_softc *sc;
u_int32_t off;
u_int16_t len;
{
struct mbuf *m;
struct mbuf *top, **mp;
u_int tlen;
top = sc->sc_rxpend;
mp = &top;
if (top != NULL) {
sc->sc_rxpend = NULL;
top->m_pkthdr.len += len;
while (*mp != NULL) {
m = *mp;
mp = &m->m_next;
}
if (m->m_flags & M_EXT)
tlen = m->m_ext.ext_size;
else if (m->m_flags & M_PKTHDR)
tlen = MHLEN;
else
tlen = MLEN;
tlen -= m->m_len;
if (tlen > len)
tlen = len;
awi_read_bytes(sc, off, mtod(m, u_int8_t *) + m->m_len, tlen);
off += tlen;
len -= tlen;
}
while (len > 0) {
if (top == NULL) {
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return NULL;
m->m_pkthdr.rcvif = sc->sc_ifp;
m->m_pkthdr.len = len;
m->m_len = MHLEN;
} else {
MGET(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
m_freem(top);
return NULL;
}
m->m_len = MLEN;
}
if (len >= MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if (m->m_flags & M_EXT)
m->m_len = m->m_ext.ext_size;
}
if (m->m_len > len)
m->m_len = len;
awi_read_bytes(sc, off, mtod(m, u_int8_t *), m->m_len);
off += m->m_len;
len -= m->m_len;
*mp = m;
mp = &m->m_next;
}
return top;
}
/*
* Initialize hardware and start firmware to accept commands.
* Called everytime after power on firmware.
*/
static int
awi_init_hw(sc)
struct awi_softc *sc;
{
u_int8_t status;
u_int16_t intmask;
int i, error;
sc->sc_enab_intr = 0;
awi_drvstate(sc, AWI_DRV_RESET);
/* reset firmware */
am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET);
DELAY(100);
awi_write_1(sc, AWI_SELFTEST, 0);
am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET);
DELAY(100);
/* wait for selftest completion */
for (i = 0; ; i++) {
if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) {
printf("%s: failed to complete selftest (timeout)\n",
sc->sc_dev.dv_xname);
return ENXIO;
}
status = awi_read_1(sc, AWI_SELFTEST);
if ((status & 0xf0) == 0xf0)
break;
if (sc->sc_cansleep) {
sc->sc_sleep_cnt++;
(void)tsleep(sc, PWAIT, "awitst", 1);
sc->sc_sleep_cnt--;
} else {
DELAY(1000*1000/hz);
}
}
if (status != AWI_SELFTEST_PASSED) {
printf("%s: failed to complete selftest (code %x)\n",
sc->sc_dev.dv_xname, status);
return ENXIO;
}
/* check banner to confirm firmware write it */
awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN);
if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) {
printf("%s: failed to complete selftest (bad banner)\n",
sc->sc_dev.dv_xname);
for (i = 0; i < AWI_BANNER_LEN; i++)
printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]);
printf("\n");
return ENXIO;
}
/* initializing interrupt */
sc->sc_enab_intr = 1;
error = awi_intr_lock(sc);
if (error)
return error;
intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT |
AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD;
awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff);
awi_write_1(sc, AWI_INTMASK2, 0);
awi_write_1(sc, AWI_INTSTAT, 0);
awi_write_1(sc, AWI_INTSTAT2, 0);
awi_intr_unlock(sc);
am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT);
/* issueing interface test command */
error = awi_cmd(sc, AWI_CMD_NOP);
if (error) {
printf("%s: failed to complete selftest", sc->sc_dev.dv_xname);
if (error != EWOULDBLOCK)
printf(" (error %d)\n", error);
else if (sc->sc_cansleep)
printf(" (lost interrupt)\n");
else
printf(" (command timeout)\n");
}
return error;
}
/*
* Extract the factory default MIB value from firmware and assign the driver
* default value.
* Called once at attaching the interface.
*/
static int
awi_init_mibs(sc)
struct awi_softc *sc;
{
int i, error;
u_int8_t *rate;
if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL)) != 0 ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR)) != 0 ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC)) != 0 ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT)) != 0 ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY)) != 0) {
printf("%s: failed to get default mib value (error %d)\n",
sc->sc_dev.dv_xname, error);
return error;
}
rate = sc->sc_mib_phy.aSuprt_Data_Rates;
sc->sc_tx_rate = AWI_RATE_1MBIT;
for (i = 0; i < rate[1]; i++) {
if (AWI_80211_RATE(rate[2 + i]) > sc->sc_tx_rate)
sc->sc_tx_rate = AWI_80211_RATE(rate[2 + i]);
}
awi_init_region(sc);
memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE);
sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID;
sc->sc_mib_local.Fragmentation_Dis = 1;
sc->sc_mib_local.Accept_All_Multicast_Dis = 1;
/* allocate buffers */
sc->sc_txbase = AWI_BUFFERS;
sc->sc_txend = sc->sc_txbase +
(AWI_TXD_SIZE + sizeof(struct ieee80211_frame) +
sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS;
LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase);
LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size,
sc->sc_txend - sc->sc_txbase);
LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend);
LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size,
AWI_BUFFERS_END - sc->sc_txend);
sc->sc_mib_local.Network_Mode = 1;
sc->sc_mib_local.Acting_as_AP = 0;
return 0;
}
/*
* Start transmitter and receiver of firmware
* Called after awi_init_hw() to start operation.
*/
static int
awi_init_txrx(sc)
struct awi_softc *sc;
{
int error;
/* start transmitter */
sc->sc_txdone = sc->sc_txnext = sc->sc_txbase;
awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0);
awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0);
awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0);
awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0);
awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0);
awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0);
awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_TX_DATA, sc->sc_txbase);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_TX_MGT, 0);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_TX_BCAST, 0);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_TX_PS, 0);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_TX_CF, 0);
error = awi_cmd(sc, AWI_CMD_INIT_TX);
if (error)
return error;
/* start receiver */
if (sc->sc_rxpend) {
m_freem(sc->sc_rxpend);
sc->sc_rxpend = NULL;
}
error = awi_cmd(sc, AWI_CMD_INIT_RX);
if (error)
return error;
sc->sc_rxdoff = awi_read_4(sc, AWI_CMD_PARAMS+AWI_CA_IRX_DATA_DESC);
sc->sc_rxmoff = awi_read_4(sc, AWI_CMD_PARAMS+AWI_CA_IRX_PS_DESC);
return 0;
}
static void
awi_stop_txrx(sc)
struct awi_softc *sc;
{
(void)awi_cmd(sc, AWI_CMD_KILL_RX);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_FTX_DATA, 1);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_FTX_MGT, 0);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_FTX_BCAST, 0);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_FTX_PS, 0);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_FTX_CF, 0);
(void)awi_cmd(sc, AWI_CMD_FLUSH_TX);
}
int
awi_init_region(sc)
struct awi_softc *sc;
{
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
switch (sc->sc_mib_phy.aCurrent_Reg_Domain) {
case AWI_REG_DOMAIN_US:
case AWI_REG_DOMAIN_CA:
case AWI_REG_DOMAIN_EU:
sc->sc_scan_min = 0;
sc->sc_scan_max = 77;
break;
case AWI_REG_DOMAIN_ES:
sc->sc_scan_min = 0;
sc->sc_scan_max = 26;
break;
case AWI_REG_DOMAIN_FR:
sc->sc_scan_min = 0;
sc->sc_scan_max = 32;
break;
case AWI_REG_DOMAIN_JP:
sc->sc_scan_min = 6;
sc->sc_scan_max = 17;
break;
default:
return EINVAL;
}
sc->sc_scan_set = sc->sc_scan_cur % 3 + 1;
} else {
switch (sc->sc_mib_phy.aCurrent_Reg_Domain) {
case AWI_REG_DOMAIN_US:
case AWI_REG_DOMAIN_CA:
sc->sc_scan_min = 1;
sc->sc_scan_max = 11;
sc->sc_scan_cur = 3;
break;
case AWI_REG_DOMAIN_EU:
sc->sc_scan_min = 1;
sc->sc_scan_max = 13;
sc->sc_scan_cur = 3;
break;
case AWI_REG_DOMAIN_ES:
sc->sc_scan_min = 10;
sc->sc_scan_max = 11;
sc->sc_scan_cur = 10;
break;
case AWI_REG_DOMAIN_FR:
sc->sc_scan_min = 10;
sc->sc_scan_max = 13;
sc->sc_scan_cur = 10;
break;
case AWI_REG_DOMAIN_JP:
sc->sc_scan_min = 14;
sc->sc_scan_max = 14;
sc->sc_scan_cur = 14;
break;
default:
return EINVAL;
}
}
sc->sc_ownch = sc->sc_scan_cur;
return 0;
}
static int
awi_start_scan(sc)
struct awi_softc *sc;
{
int error = 0;
struct awi_bss *bp;
while ((bp = TAILQ_FIRST(&sc->sc_scan)) != NULL) {
TAILQ_REMOVE(&sc->sc_scan, bp, list);
free(bp, M_DEVBUF);
}
if (!sc->sc_mib_local.Network_Mode && sc->sc_no_bssid) {
memset(&sc->sc_bss, 0, sizeof(sc->sc_bss));
sc->sc_bss.rxtime = 0;
memcpy(sc->sc_bss.essid, &sc->sc_mib_mac.aDesired_ESS_ID,
sizeof(sc->sc_bss.essid));
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
sc->sc_bss.chanset = sc->sc_ownch % 3 + 1;
sc->sc_bss.pattern = sc->sc_ownch;
sc->sc_bss.index = 1;
sc->sc_bss.dwell_time = 19; /*XXX*/
} else
sc->sc_bss.chanset = sc->sc_ownch;
sc->sc_status = AWI_ST_SETSS;
error = awi_set_ss(sc);
} else {
if (sc->sc_mib_local.Network_Mode)
awi_drvstate(sc, AWI_DRV_INFSC);
else
awi_drvstate(sc, AWI_DRV_ADHSC);
sc->sc_start_bss = 0;
sc->sc_active_scan = 1;
sc->sc_mgt_timer = AWI_ASCAN_WAIT / 1000;
sc->sc_ifp->if_timer = 1;
sc->sc_status = AWI_ST_SCAN;
error = awi_cmd_scan(sc);
}
return error;
}
static int
awi_next_scan(sc)
struct awi_softc *sc;
{
int error;
for (;;) {
/*
* The pattern parameter for FH phy should be incremented
* by 3. But BayStack 650 Access Points apparently always
* assign hop pattern set parameter to 1 for any pattern.
* So we try all combinations of pattern/set parameters.
* Since this causes no error, it may be a bug of
* PCnetMobile firmware.
*/
sc->sc_scan_cur++;
if (sc->sc_scan_cur > sc->sc_scan_max) {
sc->sc_scan_cur = sc->sc_scan_min;
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH)
sc->sc_scan_set = (sc->sc_scan_set + 1) % 3;
}
error = awi_cmd_scan(sc);
if (error != EINVAL)
break;
}
return error;
}
static void
awi_stop_scan(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
struct awi_bss *bp, *sbp;
bp = TAILQ_FIRST(&sc->sc_scan);
if (bp == NULL) {
notfound:
if (sc->sc_active_scan) {
if (ifp->if_flags & IFF_DEBUG)
printf("%s: entering passive scan mode\n",
sc->sc_dev.dv_xname);
sc->sc_active_scan = 0;
}
sc->sc_mgt_timer = AWI_PSCAN_WAIT / 1000;
ifp->if_timer = 1;
(void)awi_next_scan(sc);
return;
}
sbp = NULL;
for (; bp != NULL; bp = TAILQ_NEXT(bp, list)) {
if (bp->fails) {
/*
* The configuration of the access points may change
* during my scan. So we retries to associate with
* it unless there are any suitable AP.
*/
if (bp->fails++ < 3)
continue;
bp->fails = 0;
}
if (sc->sc_mib_mac.aDesired_ESS_ID[1] != 0 &&
memcmp(&sc->sc_mib_mac.aDesired_ESS_ID, bp->essid,
sizeof(bp->essid)) != 0)
continue;
/*
* Since the firmware apparently scans not only the specified
* channel of SCAN command but all available channel within
* the region, we should filter out unnecessary responses here.
*/
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
if (bp->pattern < sc->sc_scan_min ||
bp->pattern > sc->sc_scan_max)
continue;
} else {
if (bp->chanset < sc->sc_scan_min ||
bp->chanset > sc->sc_scan_max)
continue;
}
if (sbp == NULL || bp->rssi > sbp->rssi)
sbp = bp;
}
if (sbp == NULL)
goto notfound;
sc->sc_bss = *sbp;
(void)awi_set_ss(sc);
}
static void
awi_recv_beacon(sc, m0, rxts, rssi)
struct awi_softc *sc;
struct mbuf *m0;
u_int32_t rxts;
u_int8_t rssi;
{
struct ieee80211_frame *wh;
struct awi_bss *bp;
u_int8_t *frame, *eframe;
u_int8_t *tstamp, *capinfo, *ssid, *rates, *parms;
u_int16_t bintval;
if (sc->sc_status != AWI_ST_SCAN)
return;
wh = mtod(m0, struct ieee80211_frame *);
frame = (u_int8_t *)&wh[1];
eframe = mtod(m0, u_int8_t *) + m0->m_len;
/*
* XXX:
* timestamp [8]
* beacon interval [2]
* capability information [2]
* ssid [tlv]
* supported rates [tlv]
* parameter set [tlv]
* ...
*/
if (frame + 12 > eframe) {
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_recv_beacon: frame too short \n");
#endif
return;
}
tstamp = frame;
frame += 8;
bintval = LE_READ_2(frame);
frame += 2;
capinfo = frame;
frame += 2;
if (sc->sc_mib_local.Network_Mode) {
if (!(capinfo[0] & IEEE80211_CAPINFO_ESS) ||
(capinfo[0] & IEEE80211_CAPINFO_IBSS)) {
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_recv_beacon: non ESS \n");
#endif
return;
}
} else {
if ((capinfo[0] & IEEE80211_CAPINFO_ESS) ||
!(capinfo[0] & IEEE80211_CAPINFO_IBSS)) {
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_recv_beacon: non IBSS \n");
#endif
return;
}
}
ssid = rates = parms = NULL;
while (frame < eframe) {
switch (*frame) {
case IEEE80211_ELEMID_SSID:
ssid = frame;
break;
case IEEE80211_ELEMID_RATES:
rates = frame;
break;
case IEEE80211_ELEMID_FHPARMS:
case IEEE80211_ELEMID_DSPARMS:
parms = frame;
break;
}
frame += frame[1] + 2;
}
if (ssid == NULL || rates == NULL || parms == NULL) {
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_recv_beacon: ssid=%p, rates=%p, parms=%p\n",
ssid, rates, parms);
#endif
return;
}
if (ssid[1] > IEEE80211_NWID_LEN) {
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_recv_beacon: bad ssid len: %d from %s\n",
ssid[1], ether_sprintf(wh->i_addr2));
#endif
return;
}
for (bp = TAILQ_FIRST(&sc->sc_scan); bp != NULL;
bp = TAILQ_NEXT(bp, list)) {
if (memcmp(bp->esrc, wh->i_addr2, ETHER_ADDR_LEN) == 0 &&
memcmp(bp->bssid, wh->i_addr3, ETHER_ADDR_LEN) == 0)
break;
}
if (bp == NULL) {
bp = malloc(sizeof(struct awi_bss), M_DEVBUF, M_NOWAIT);
if (bp == NULL)
return;
TAILQ_INSERT_TAIL(&sc->sc_scan, bp, list);
memcpy(bp->esrc, wh->i_addr2, ETHER_ADDR_LEN);
memcpy(bp->bssid, wh->i_addr3, ETHER_ADDR_LEN);
memset(bp->essid, 0, sizeof(bp->essid));
memcpy(bp->essid, ssid, 2 + ssid[1]);
}
bp->rssi = rssi;
bp->rxtime = rxts;
memcpy(bp->timestamp, tstamp, sizeof(bp->timestamp));
bp->interval = bintval;
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
bp->chanset = parms[4];
bp->pattern = parms[5];
bp->index = parms[6];
bp->dwell_time = LE_READ_2(parms + 2);
} else {
bp->chanset = parms[2];
bp->pattern = 0;
bp->index = 0;
bp->dwell_time = 0;
}
if (sc->sc_mgt_timer == 0)
awi_stop_scan(sc);
}
static int
awi_set_ss(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
struct awi_bss *bp;
int error;
sc->sc_status = AWI_ST_SETSS;
bp = &sc->sc_bss;
if (ifp->if_flags & IFF_DEBUG) {
printf("%s: ch %d pat %d id %d dw %d iv %d bss %s ssid \"%s\"\n",
sc->sc_dev.dv_xname, bp->chanset,
bp->pattern, bp->index, bp->dwell_time, bp->interval,
ether_sprintf(bp->bssid), bp->essid + 2);
}
memcpy(&sc->sc_mib_mgt.aCurrent_BSS_ID, bp->bssid, ETHER_ADDR_LEN);
memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID, bp->essid,
AWI_ESS_ID_SIZE);
LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, bp->interval);
error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT);
return error;
}
static void
awi_try_sync(sc)
struct awi_softc *sc;
{
struct awi_bss *bp;
sc->sc_status = AWI_ST_SYNC;
bp = &sc->sc_bss;
if (sc->sc_cmd_inprog) {
if (awi_cmd_wait(sc))
return;
}
sc->sc_cmd_inprog = 1;
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_SET, bp->chanset);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_PATTERN, bp->pattern);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_IDX, bp->index);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_STARTBSS,
sc->sc_start_bss ? 1 : 0);
awi_write_2(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_DWELL, bp->dwell_time);
awi_write_2(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_MBZ, 0);
awi_write_bytes(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_TIMESTAMP,
bp->timestamp, 8);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_REFTIME, bp->rxtime);
(void)awi_cmd(sc, AWI_CMD_SYNC);
}
static void
awi_sync_done(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
if (sc->sc_mib_local.Network_Mode) {
awi_drvstate(sc, AWI_DRV_INFSY);
awi_send_auth(sc);
} else {
printf("%s: synced with %s ssid \"%s\" at chanset %d\n",
sc->sc_dev.dv_xname, ether_sprintf(sc->sc_bss.bssid),
sc->sc_bss.essid + 2, sc->sc_bss.chanset);
awi_drvstate(sc, AWI_DRV_ADHSY);
sc->sc_status = AWI_ST_RUNNING;
ifp->if_flags |= IFF_RUNNING;
awi_start(ifp);
}
}
static void
awi_send_deauth(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
struct mbuf *m;
struct ieee80211_frame *wh;
u_int8_t *deauth;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return;
if (ifp->if_flags & IFF_DEBUG)
printf("%s: sending deauth to %s\n", sc->sc_dev.dv_xname,
ether_sprintf(sc->sc_bss.bssid));
wh = mtod(m, struct ieee80211_frame *);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
IEEE80211_FC0_SUBTYPE_AUTH;
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
LE_WRITE_2(wh->i_dur, 0);
LE_WRITE_2(wh->i_seq, 0);
memcpy(wh->i_addr1, sc->sc_bss.bssid, ETHER_ADDR_LEN);
memcpy(wh->i_addr2, sc->sc_mib_addr.aMAC_Address, ETHER_ADDR_LEN);
memcpy(wh->i_addr3, sc->sc_bss.bssid, ETHER_ADDR_LEN);
deauth = (u_int8_t *)&wh[1];
LE_WRITE_2(deauth, IEEE80211_REASON_AUTH_LEAVE);
deauth += 2;
m->m_pkthdr.len = m->m_len = deauth - mtod(m, u_int8_t *);
IF_ENQUEUE(&sc->sc_mgtq, m);
awi_start(ifp);
awi_drvstate(sc, AWI_DRV_INFTOSS);
}
static void
awi_send_auth(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
struct mbuf *m;
struct ieee80211_frame *wh;
u_int8_t *auth;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return;
sc->sc_status = AWI_ST_AUTH;
if (ifp->if_flags & IFF_DEBUG)
printf("%s: sending auth to %s\n", sc->sc_dev.dv_xname,
ether_sprintf(sc->sc_bss.bssid));
wh = mtod(m, struct ieee80211_frame *);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
IEEE80211_FC0_SUBTYPE_AUTH;
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
LE_WRITE_2(wh->i_dur, 0);
LE_WRITE_2(wh->i_seq, 0);
memcpy(wh->i_addr1, sc->sc_bss.bssid, ETHER_ADDR_LEN);
memcpy(wh->i_addr2, sc->sc_mib_addr.aMAC_Address, ETHER_ADDR_LEN);
memcpy(wh->i_addr3, sc->sc_bss.bssid, ETHER_ADDR_LEN);
auth = (u_int8_t *)&wh[1];
/* algorithm number */
LE_WRITE_2(auth, IEEE80211_AUTH_ALG_OPEN);
auth += 2;
/* sequence number */
LE_WRITE_2(auth, 1);
auth += 2;
/* status */
LE_WRITE_2(auth, 0);
auth += 2;
m->m_pkthdr.len = m->m_len = auth - mtod(m, u_int8_t *);
IF_ENQUEUE(&sc->sc_mgtq, m);
awi_start(ifp);
sc->sc_mgt_timer = AWI_TRANS_TIMEOUT / 1000;
ifp->if_timer = 1;
}
static void
awi_recv_auth(sc, m0)
struct awi_softc *sc;
struct mbuf *m0;
{
struct ieee80211_frame *wh;
u_int8_t *auth, *eframe;
struct awi_bss *bp;
u_int16_t status;
wh = mtod(m0, struct ieee80211_frame *);
auth = (u_int8_t *)&wh[1];
eframe = mtod(m0, u_int8_t *) + m0->m_len;
if (sc->sc_ifp->if_flags & IFF_DEBUG)
printf("%s: receive auth from %s\n", sc->sc_dev.dv_xname,
ether_sprintf(wh->i_addr2));
if (!sc->sc_mib_local.Network_Mode) {
/* XXX: 802.11 allow auth for IBSS */
return;
}
if (sc->sc_status != AWI_ST_AUTH)
return;
/* algorithm number */
if (LE_READ_2(auth) != IEEE80211_AUTH_ALG_OPEN)
return;
auth += 2;
/* sequence number */
if (LE_READ_2(auth) != 2)
return;
auth += 2;
/* status */
status = LE_READ_2(auth);
if (status != 0) {
printf("%s: authentication failed (reason %d)\n",
sc->sc_dev.dv_xname, status);
for (bp = TAILQ_FIRST(&sc->sc_scan); bp != NULL;
bp = TAILQ_NEXT(bp, list)) {
if (memcmp(bp->esrc, sc->sc_bss.esrc, ETHER_ADDR_LEN)
== 0) {
bp->fails++;
break;
}
}
return;
}
sc->sc_mgt_timer = 0;
awi_drvstate(sc, AWI_DRV_INFAUTH);
awi_send_asreq(sc, 0);
}
static void
awi_send_asreq(sc, reassoc)
struct awi_softc *sc;
int reassoc;
{
struct ifnet *ifp = sc->sc_ifp;
struct mbuf *m;
struct ieee80211_frame *wh;
u_int16_t lintval;
u_int8_t *asreq;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return;
sc->sc_status = AWI_ST_ASSOC;
if (ifp->if_flags & IFF_DEBUG)
printf("%s: sending %sassoc req to %s\n", sc->sc_dev.dv_xname,
reassoc ? "re" : "",
ether_sprintf(sc->sc_bss.bssid));
wh = mtod(m, struct ieee80211_frame *);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT;
if (reassoc)
wh->i_fc[0] |= IEEE80211_FC0_SUBTYPE_REASSOC_REQ;
else
wh->i_fc[0] |= IEEE80211_FC0_SUBTYPE_ASSOC_REQ;
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
LE_WRITE_2(wh->i_dur, 0);
LE_WRITE_2(wh->i_seq, 0);
memcpy(wh->i_addr1, sc->sc_bss.bssid, ETHER_ADDR_LEN);
memcpy(wh->i_addr2, sc->sc_mib_addr.aMAC_Address, ETHER_ADDR_LEN);
memcpy(wh->i_addr3, sc->sc_bss.bssid, ETHER_ADDR_LEN);
asreq = (u_int8_t *)&wh[1];
/* capability info */
LE_WRITE_2(asreq, IEEE80211_CAPINFO_CF_POLLABLE);
asreq += 2;
/* listen interval */
lintval = LE_READ_2(&sc->sc_mib_mgt.aListen_Interval);
LE_WRITE_2(asreq, lintval);
asreq += 2;
if (reassoc) {
/* current AP address */
memcpy(asreq, sc->sc_bss.bssid, ETHER_ADDR_LEN);
asreq += ETHER_ADDR_LEN;
}
/* ssid */
memcpy(asreq, sc->sc_bss.essid, 2 + sc->sc_bss.essid[1]);
asreq += 2 + asreq[1];
/* supported rates */
memcpy(asreq, &sc->sc_mib_phy.aSuprt_Data_Rates, 4);
asreq += 2 + asreq[1];
m->m_pkthdr.len = m->m_len = asreq - mtod(m, u_int8_t *);
IF_ENQUEUE(&sc->sc_mgtq, m);
awi_start(ifp);
sc->sc_mgt_timer = AWI_TRANS_TIMEOUT / 1000;
ifp->if_timer = 1;
}
static void
awi_recv_asresp(sc, m0)
struct awi_softc *sc;
struct mbuf *m0;
{
struct ieee80211_frame *wh;
u_int8_t *asresp, *eframe;
u_int16_t status;
u_int8_t rate, *phy_rates;
struct awi_bss *bp;
int i, j;
wh = mtod(m0, struct ieee80211_frame *);
asresp = (u_int8_t *)&wh[1];
eframe = mtod(m0, u_int8_t *) + m0->m_len;
if (sc->sc_ifp->if_flags & IFF_DEBUG)
printf("%s: receive assoc resp from %s\n", sc->sc_dev.dv_xname,
ether_sprintf(wh->i_addr2));
if (!sc->sc_mib_local.Network_Mode)
return;
if (sc->sc_status != AWI_ST_ASSOC)
return;
/* capability info */
asresp += 2;
/* status */
status = LE_READ_2(asresp);
if (status != 0) {
printf("%s: association failed (reason %d)\n",
sc->sc_dev.dv_xname, status);
for (bp = TAILQ_FIRST(&sc->sc_scan); bp != NULL;
bp = TAILQ_NEXT(bp, list)) {
if (memcmp(bp->esrc, sc->sc_bss.esrc, ETHER_ADDR_LEN)
== 0) {
bp->fails++;
break;
}
}
return;
}
asresp += 2;
/* association id */
asresp += 2;
/* supported rates */
rate = AWI_RATE_1MBIT;
for (i = 0; i < asresp[1]; i++) {
if (AWI_80211_RATE(asresp[2 + i]) <= rate)
continue;
phy_rates = sc->sc_mib_phy.aSuprt_Data_Rates;
for (j = 0; j < phy_rates[1]; j++) {
if (AWI_80211_RATE(asresp[2 + i]) ==
AWI_80211_RATE(phy_rates[2 + j]))
rate = AWI_80211_RATE(asresp[2 + i]);
}
}
printf("%s: associated with %s ssid \"%s\"",
sc->sc_dev.dv_xname, ether_sprintf(sc->sc_bss.bssid),
sc->sc_bss.essid + 2);
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH)
printf(" chanset %d pattern %d",
sc->sc_bss.chanset, sc->sc_bss.pattern);
else
printf(" channel %d", sc->sc_bss.chanset);
printf(" signal %d\n", sc->sc_bss.rssi);
sc->sc_tx_rate = rate;
sc->sc_mgt_timer = 0;
sc->sc_rx_timer = 10;
sc->sc_ifp->if_timer = 1;
sc->sc_status = AWI_ST_RUNNING;
sc->sc_ifp->if_flags |= IFF_RUNNING;
awi_drvstate(sc, AWI_DRV_INFASSOC);
awi_start(sc->sc_ifp);
}
static int
awi_mib(sc, cmd, mib)
struct awi_softc *sc;
u_int8_t cmd;
u_int8_t mib;
{
int error;
u_int8_t size, *ptr;
switch (mib) {
case AWI_MIB_LOCAL:
ptr = (u_int8_t *)&sc->sc_mib_local;
size = sizeof(sc->sc_mib_local);
break;
case AWI_MIB_ADDR:
ptr = (u_int8_t *)&sc->sc_mib_addr;
size = sizeof(sc->sc_mib_addr);
break;
case AWI_MIB_MAC:
ptr = (u_int8_t *)&sc->sc_mib_mac;
size = sizeof(sc->sc_mib_mac);
break;
case AWI_MIB_STAT:
ptr = (u_int8_t *)&sc->sc_mib_stat;
size = sizeof(sc->sc_mib_stat);
break;
case AWI_MIB_MGT:
ptr = (u_int8_t *)&sc->sc_mib_mgt;
size = sizeof(sc->sc_mib_mgt);
break;
case AWI_MIB_PHY:
ptr = (u_int8_t *)&sc->sc_mib_phy;
size = sizeof(sc->sc_mib_phy);
break;
default:
return EINVAL;
}
if (sc->sc_cmd_inprog) {
error = awi_cmd_wait(sc);
if (error) {
printf("awi_mib: cmd %d inprog\n",
awi_read_1(sc, AWI_CMD));
return error;
}
}
sc->sc_cmd_inprog = 1;
if (cmd == AWI_CMD_SET_MIB)
awi_write_bytes(sc, AWI_CMD_PARAMS+AWI_CA_MIB_DATA, ptr, size);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_MIB_TYPE, mib);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_MIB_SIZE, size);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_MIB_INDEX, 0);
error = awi_cmd(sc, cmd);
if (error)
return error;
if (cmd == AWI_CMD_GET_MIB) {
awi_read_bytes(sc, AWI_CMD_PARAMS+AWI_CA_MIB_DATA, ptr, size);
#ifdef AWI_DEBUG
if (awi_verbose) {
int i;
printf("awi_mib: #%d:", mib);
for (i = 0; i < size; i++)
printf(" %02x", ptr[i]);
printf("\n");
}
#endif
}
return 0;
}
static int
awi_cmd_scan(sc)
struct awi_softc *sc;
{
int error;
u_int8_t scan_mode;
if (sc->sc_active_scan)
scan_mode = AWI_SCAN_ACTIVE;
else
scan_mode = AWI_SCAN_PASSIVE;
if (sc->sc_mib_mgt.aScan_Mode != scan_mode) {
sc->sc_mib_mgt.aScan_Mode = scan_mode;
error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT);
return error;
}
if (sc->sc_cmd_inprog) {
error = awi_cmd_wait(sc);
if (error)
return error;
}
sc->sc_cmd_inprog = 1;
awi_write_2(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_DURATION,
sc->sc_active_scan ? AWI_ASCAN_DURATION : AWI_PSCAN_DURATION);
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_SET,
sc->sc_scan_set);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_PATTERN,
sc->sc_scan_cur);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_IDX, 1);
} else {
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_SET,
sc->sc_scan_cur);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_PATTERN, 0);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_IDX, 0);
}
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_SUSP, 0);
return awi_cmd(sc, AWI_CMD_SCAN);
}
static int
awi_cmd(sc, cmd)
struct awi_softc *sc;
u_int8_t cmd;
{
u_int8_t status;
int error = 0;
sc->sc_cmd_inprog = 1;
awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE);
awi_write_1(sc, AWI_CMD, cmd);
if (sc->sc_status != AWI_ST_INIT)
return 0;
error = awi_cmd_wait(sc);
if (error)
return error;
status = awi_read_1(sc, AWI_CMD_STATUS);
awi_write_1(sc, AWI_CMD, 0);
switch (status) {
case AWI_STAT_OK:
break;
case AWI_STAT_BADPARM:
return EINVAL;
default:
printf("%s: command %d failed %x\n",
sc->sc_dev.dv_xname, cmd, status);
return ENXIO;
}
return 0;
}
static void
awi_cmd_done(sc)
struct awi_softc *sc;
{
u_int8_t cmd, status;
status = awi_read_1(sc, AWI_CMD_STATUS);
if (status == AWI_STAT_IDLE)
return; /* stray interrupt */
sc->sc_cmd_inprog = 0;
if (sc->sc_status == AWI_ST_INIT) {
wakeup(sc);
return;
}
cmd = awi_read_1(sc, AWI_CMD);
awi_write_1(sc, AWI_CMD, 0);
if (status != AWI_STAT_OK) {
printf("%s: command %d failed %x\n",
sc->sc_dev.dv_xname, cmd, status);
return;
}
switch (sc->sc_status) {
case AWI_ST_SCAN:
if (cmd == AWI_CMD_SET_MIB)
awi_cmd_scan(sc); /* retry */
break;
case AWI_ST_SETSS:
awi_try_sync(sc);
break;
case AWI_ST_SYNC:
awi_sync_done(sc);
break;
default:
break;
}
}
static int
awi_next_txd(sc, len, framep, ntxdp)
struct awi_softc *sc;
int len;
u_int32_t *framep, *ntxdp;
{
u_int32_t txd, ntxd, frame;
txd = sc->sc_txnext;
frame = txd + AWI_TXD_SIZE;
if (frame + len > sc->sc_txend)
frame = sc->sc_txbase;
ntxd = frame + len;
if (ntxd + AWI_TXD_SIZE > sc->sc_txend)
ntxd = sc->sc_txbase;
*framep = frame;
*ntxdp = ntxd;
/*
* Determine if there are any room in ring buffer.
* --- send wait, === new data, +++ conflict (ENOBUFS)
* base........................end
* done----txd=====ntxd OK
* --txd=====done++++ntxd-- full
* --txd=====ntxd done-- OK
* ==ntxd done----txd=== OK
* ==done++++ntxd----txd=== full
* ++ntxd txd=====done++ full
*/
if (txd < ntxd) {
if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone)
return ENOBUFS;
} else {
if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone)
return ENOBUFS;
}
return 0;
}
static int
awi_lock(sc)
struct awi_softc *sc;
{
int error = 0;
if (sc->sc_invalid)
return ENXIO;
if (curproc == NULL) {
/*
* XXX
* Though driver ioctl should be called with context,
* KAME ipv6 stack calls ioctl in interrupt for now.
* We simply abort the request if there are other
* ioctl requests in progress.
*/
if (sc->sc_busy)
return EWOULDBLOCK;
sc->sc_busy = 1;
sc->sc_cansleep = 0;
return 0;
}
while (sc->sc_busy) {
sc->sc_sleep_cnt++;
error = tsleep(sc, PWAIT | PCATCH, "awilck", 0);
sc->sc_sleep_cnt--;
if (error)
return error;
if (sc->sc_invalid)
return ENXIO;
}
sc->sc_busy = 1;
sc->sc_cansleep = 1;
return 0;
}
static void
awi_unlock(sc)
struct awi_softc *sc;
{
sc->sc_busy = 0;
sc->sc_cansleep = 0;
if (sc->sc_sleep_cnt)
wakeup(sc);
}
static int
awi_intr_lock(sc)
struct awi_softc *sc;
{
u_int8_t status;
int i, retry;
status = 1;
for (retry = 0; retry < 10; retry++) {
for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) {
status = awi_read_1(sc, AWI_LOCKOUT_HOST);
if (status == 0)
break;
DELAY(5);
}
if (status != 0)
break;
awi_write_1(sc, AWI_LOCKOUT_MAC, 1);
status = awi_read_1(sc, AWI_LOCKOUT_HOST);
if (status == 0)
break;
awi_write_1(sc, AWI_LOCKOUT_MAC, 0);
}
if (status != 0) {
printf("%s: failed to lock interrupt\n",
sc->sc_dev.dv_xname);
return ENXIO;
}
return 0;
}
static void
awi_intr_unlock(sc)
struct awi_softc *sc;
{
awi_write_1(sc, AWI_LOCKOUT_MAC, 0);
}
static int
awi_cmd_wait(sc)
struct awi_softc *sc;
{
int i, error = 0;
i = 0;
while (sc->sc_cmd_inprog) {
if (sc->sc_invalid)
return ENXIO;
if (sc->sc_cansleep) {
sc->sc_sleep_cnt++;
error = tsleep(sc, PWAIT, "awicmd",
AWI_CMD_TIMEOUT*hz/1000);
sc->sc_sleep_cnt--;
} else {
if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) {
awi_cmd_done(sc);
break;
}
if (i++ >= AWI_CMD_TIMEOUT*1000/10)
error = EWOULDBLOCK;
else
DELAY(10);
}
if (error)
break;
}
return error;
}
#ifdef AWI_DEBUG
static void
awi_dump_pkt(sc, m, rssi)
struct awi_softc *sc;
struct mbuf *m;
u_int8_t rssi;
{
struct ieee80211_frame *wh;
int i, l;
wh = mtod(m, struct ieee80211_frame *);
if (awi_dump_mask != 0 &&
((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK)==IEEE80211_FC1_DIR_NODS) &&
((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK)==IEEE80211_FC0_TYPE_MGT)) {
if ((AWI_DUMP_MASK(wh->i_fc[0]) & awi_dump_mask) != 0)
return;
}
if (awi_dump_mask < 0 &&
(wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK)==IEEE80211_FC0_TYPE_DATA)
return;
switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
case IEEE80211_FC1_DIR_NODS:
printf("rx: NODS %s", ether_sprintf(wh->i_addr2));
printf("->%s", ether_sprintf(wh->i_addr1));
printf("(%s)", ether_sprintf(wh->i_addr3));
break;
case IEEE80211_FC1_DIR_TODS:
printf("rx: TODS %s", ether_sprintf(wh->i_addr2));
printf("->%s", ether_sprintf(wh->i_addr3));
printf("(%s)", ether_sprintf(wh->i_addr1));
break;
case IEEE80211_FC1_DIR_FROMDS:
printf("rx: FRDS %s", ether_sprintf(wh->i_addr3));
printf("->%s", ether_sprintf(wh->i_addr1));
printf("(%s)", ether_sprintf(wh->i_addr2));
break;
case IEEE80211_FC1_DIR_DSTODS:
printf("rx: DSDS %s", ether_sprintf((u_int8_t *)&wh[1]));
printf("->%s", ether_sprintf(wh->i_addr3));
printf("(%s", ether_sprintf(wh->i_addr2));
printf("->%s)", ether_sprintf(wh->i_addr1));
break;
}
switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
case IEEE80211_FC0_TYPE_DATA:
printf(" data");
break;
case IEEE80211_FC0_TYPE_MGT:
switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
printf(" probe_req");
break;
case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
printf(" probe_resp");
break;
case IEEE80211_FC0_SUBTYPE_BEACON:
printf(" beacon");
break;
case IEEE80211_FC0_SUBTYPE_AUTH:
printf(" auth");
break;
case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
printf(" assoc_req");
break;
case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
printf(" assoc_resp");
break;
case IEEE80211_FC0_SUBTYPE_REASSOC_REQ:
printf(" reassoc_req");
break;
case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
printf(" reassoc_resp");
break;
case IEEE80211_FC0_SUBTYPE_DEAUTH:
printf(" deauth");
break;
case IEEE80211_FC0_SUBTYPE_DISASSOC:
printf(" disassoc");
break;
default:
printf(" mgt#%d",
wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK);
break;
}
break;
default:
printf(" type#%d",
wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
break;
}
printf(" +%d\n", rssi);
if (awi_dump_len > 0) {
l = m->m_len;
if (l > awi_dump_len + sizeof(*wh))
l = awi_dump_len + sizeof(*wh);
i = sizeof(*wh);
if (awi_dump_hdr)
i = 0;
for (; i < l; i++) {
if ((i & 1) == 0)
printf(" ");
printf("%02x", mtod(m, u_int8_t *)[i]);
}
printf("\n");
}
}
#endif
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