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freebsd-nq/sys/dev/awi/awi.c
Sam Leffler 68e8e04e93 Update 802.11 wireless support: 
o major overhaul of the way channels are handled: channels are now
  fully enumerated and uniquely identify the operating characteristics;
  these changes are visible to user applications which require changes
o make scanning support independent of the state machine to enable
  background scanning and roaming
o move scanning support into loadable modules based on the operating
  mode to enable different policies and reduce the memory footprint
  on systems w/ constrained resources
o add background scanning in station mode (no support for adhoc/ibss
  mode yet)
o significantly speedup sta mode scanning with a variety of techniques
o add roaming support when background scanning is supported; for now
  we use a simple algorithm to trigger a roam: we threshold the rssi
  and tx rate, if either drops too low we try to roam to a new ap
o add tx fragmentation support
o add first cut at 802.11n support: this code works with forthcoming
  drivers but is incomplete; it's included now to establish a baseline
  for other drivers to be developed and for user applications
o adjust max_linkhdr et. al. to reflect 802.11 requirements; this eliminates
  prepending mbufs for traffic generated locally
o add support for Atheros protocol extensions; mainly the fast frames
  encapsulation (note this can be used with any card that can tx+rx
  large frames correctly)
o add sta support for ap's that beacon both WPA1+2 support
o change all data types from bsd-style to posix-style
o propagate noise floor data from drivers to net80211 and on to user apps
o correct various issues in the sta mode state machine related to handling
  authentication and association failures
o enable the addition of sta mode power save support for drivers that need
  net80211 support (not in this commit)
o remove old WI compatibility ioctls (wicontrol is officially dead)
o change the data structures returned for get sta info and get scan
  results so future additions will not break user apps
o fixed tx rate is now maintained internally as an ieee rate and not an
  index into the rate set; this needs to be extended to deal with
  multi-mode operation
o add extended channel specifications to radiotap to enable 11n sniffing

Drivers:
o ath: add support for bg scanning, tx fragmentation, fast frames,
       dynamic turbo (lightly tested), 11n (sniffing only and needs
       new hal)
o awi: compile tested only
o ndis: lightly tested
o ipw: lightly tested
o iwi: add support for bg scanning (well tested but may have some
       rough edges)
o ral, ural, rum: add suppoort for bg scanning, calibrate rssi data
o wi: lightly tested

This work is based on contributions by Atheros, kmacy, sephe, thompsa,
mlaier, kevlo, and others.  Much of the scanning work was supported by
Atheros.  The 11n work was supported by Marvell.
2007-06-11 03:36:55 +00:00

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/* $NetBSD: awi.c,v 1.62 2004/01/16 14:13:15 onoe Exp $ */
/*-
* Copyright (c) 1999,2000,2001 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 <sys/cdefs.h>
#ifdef __NetBSD__
__KERNEL_RCSID(0, "$NetBSD: awi.c,v 1.62 2004/01/16 14:13:15 onoe Exp $");
#endif
#ifdef __FreeBSD__
__FBSDID("$FreeBSD$");
#endif
#include "opt_inet.h"
#ifdef __NetBSD__
#include "bpfilter.h"
#endif
#ifdef __FreeBSD__
#define NBPFILTER 1
#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/endian.h>
#ifdef __FreeBSD__
#include <sys/bus.h>
#endif
#ifdef __NetBSD__
#include <sys/device.h>
#endif
#include <net/if.h>
#include <net/if_dl.h>
#ifdef __NetBSD__
#include <net/if_ether.h>
#endif
#ifdef __FreeBSD__
#include <net/ethernet.h>
#include <net/if_arp.h>
#endif
#include <net/if_media.h>
#include <net/if_llc.h>
#include <net80211/ieee80211_var.h>
#ifdef __NetBSD__
#include <net80211/ieee80211_compat.h>
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#endif
#include <machine/cpu.h>
#include <machine/bus.h>
#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
#ifdef __FreeBSD__
static void awi_init0(void *);
#endif
static int awi_init(struct ifnet *);
static void awi_stop(struct ifnet *, int);
static void awi_start(struct ifnet *);
static void awi_watchdog(struct ifnet *);
static int awi_ioctl(struct ifnet *, u_long, caddr_t);
static int awi_media_change(struct ifnet *);
static void awi_media_status(struct ifnet *, struct ifmediareq *);
static int awi_mode_init(struct awi_softc *);
static void awi_rx_int(struct awi_softc *);
static void awi_tx_int(struct awi_softc *);
static struct mbuf *awi_devget(struct awi_softc *, u_int32_t, u_int16_t);
static int awi_hw_init(struct awi_softc *);
static int awi_init_mibs(struct awi_softc *);
static int awi_mib(struct awi_softc *, u_int8_t, u_int8_t, int);
static int awi_cmd(struct awi_softc *, u_int8_t, int);
static int awi_cmd_wait(struct awi_softc *);
static void awi_cmd_done(struct awi_softc *);
static int awi_next_txd(struct awi_softc *, int, u_int32_t *, u_int32_t *);
static int awi_lock(struct awi_softc *);
static void awi_unlock(struct awi_softc *);
static int awi_intr_lock(struct awi_softc *);
static void awi_intr_unlock(struct awi_softc *);
static int awi_newstate(struct ieee80211com *, enum ieee80211_state, int);
static void awi_recv_mgmt(struct ieee80211com *, struct mbuf *,
struct ieee80211_node *, int, int, int, u_int32_t);
static int awi_send_mgmt(struct ieee80211com *, struct ieee80211_node *, int,
int);
static struct mbuf *awi_ether_encap(struct awi_softc *, struct mbuf *);
static struct mbuf *awi_ether_modcap(struct awi_softc *, struct mbuf *);
/* unaligned little endian access */
#define LE_READ_2(p) \
((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8))
#define LE_READ_4(p) \
((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8) | \
(((u_int8_t *)(p))[2] << 16) | (((u_int8_t *)(p))[3] << 24))
#define LE_WRITE_2(p, v) \
((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \
(((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff)))
#define LE_WRITE_4(p, v) \
((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \
(((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff)), \
(((u_int8_t *)(p))[2] = (((u_int32_t)(v) >> 16) & 0xff)), \
(((u_int8_t *)(p))[3] = (((u_int32_t)(v) >> 24) & 0xff)))
struct awi_chanset awi_chanset[] = {
/* PHY type domain min max def */
{ AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_JP, 6, 17, 6 },
{ AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_ES, 0, 26, 1 },
{ AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_FR, 0, 32, 1 },
{ AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_US, 0, 77, 1 },
{ AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_CA, 0, 77, 1 },
{ AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_EU, 0, 77, 1 },
{ AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_JP, 14, 14, 14 },
{ AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_ES, 10, 11, 10 },
{ AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_FR, 10, 13, 10 },
{ AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_US, 1, 11, 3 },
{ AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_CA, 1, 11, 3 },
{ AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_EU, 1, 13, 3 },
{ 0, 0 }
};
#ifdef __FreeBSD__
devclass_t awi_devclass;
#if __FreeBSD_version < 500043
static char *ether_sprintf(u_int8_t *);
static char *
ether_sprintf(u_int8_t *enaddr)
{
static char strbuf[18];
sprintf(strbuf, "%6D", enaddr, ":");
return strbuf;
}
#endif
#if 0 /* ALTQ */
#define IFQ_PURGE(ifq) IF_DRAIN(ifq)
#define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head)
#define IFQ_POLL(ifq, m) IF_POLL((ifq), (m))
#define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m))
#endif
#endif
#ifdef AWI_DEBUG
int awi_debug = 0;
#define DPRINTF(X) if (awi_debug) printf X
#define DPRINTF2(X) if (awi_debug > 1) printf X
#else
#define DPRINTF(X)
#define DPRINTF2(X)
#endif
int
awi_attach(struct awi_softc *sc)
{
struct ieee80211com *ic = &sc->sc_ic;
struct ifnet *ifp = AC2IFP(&sc->sc_arp);
int s, i, error, nrate;
int mword;
enum ieee80211_phymode mode;
s = splnet();
sc->sc_busy = 1;
sc->sc_attached = 0;
sc->sc_substate = AWI_ST_NONE;
if ((error = awi_hw_init(sc)) != 0) {
sc->sc_invalid = 1;
splx(s);
return error;
}
error = awi_init_mibs(sc);
if (error != 0) {
sc->sc_invalid = 1;
splx(s);
return error;
}
ifp->if_softc = sc;
ifp->if_flags =
#ifdef IFF_NOTRAILERS
IFF_NOTRAILERS |
#endif
IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST | IFF_NEEDSGIANT;
ifp->if_ioctl = awi_ioctl;
ifp->if_start = awi_start;
ifp->if_watchdog = awi_watchdog;
#ifdef __NetBSD__
ifp->if_init = awi_init;
ifp->if_stop = awi_stop;
IFQ_SET_READY(&ifp->if_snd);
memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ);
#endif
#ifdef __FreeBSD__
ifp->if_init = awi_init0;
ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
if_initname(ifp, device_get_name(sc->sc_dev),
device_get_unit(sc->sc_dev));
#endif
ic->ic_ifp = ifp;
ic->ic_caps = IEEE80211_C_WEP | IEEE80211_C_IBSS | IEEE80211_C_HOSTAP;
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
ic->ic_phytype = IEEE80211_T_FH;
mode = IEEE80211_MODE_FH;
} else {
ic->ic_phytype = IEEE80211_T_DS;
ic->ic_caps |= IEEE80211_C_AHDEMO;
mode = IEEE80211_MODE_11B;
}
ic->ic_opmode = IEEE80211_M_STA;
nrate = sc->sc_mib_phy.aSuprt_Data_Rates[1];
memcpy(ic->ic_sup_rates[mode].rs_rates,
sc->sc_mib_phy.aSuprt_Data_Rates + 2, nrate);
ic->ic_sup_rates[mode].rs_nrates = nrate;
IEEE80211_ADDR_COPY(ic->ic_myaddr, sc->sc_mib_addr.aMAC_Address);
printf("%s: IEEE802.11 %s (firmware %s)\n", ifp->if_xname,
(ic->ic_phytype == IEEE80211_T_FH) ? "FH" : "DS", sc->sc_banner);
#ifdef __NetBSD__
if_attach(ifp);
#endif
ieee80211_ifattach(ic);
sc->sc_newstate = ic->ic_newstate;
ic->ic_newstate = awi_newstate;
sc->sc_recv_mgmt = ic->ic_recv_mgmt;
ic->ic_recv_mgmt = awi_recv_mgmt;
sc->sc_send_mgmt = ic->ic_send_mgmt;
ic->ic_send_mgmt = awi_send_mgmt;
ieee80211_media_init(ic, awi_media_change, awi_media_status);
/* Melco compatibility mode. */
#define ADD(s, o) ifmedia_add(&ic->ic_media, \
IFM_MAKEWORD(IFM_IEEE80211, (s), (o), 0), 0, NULL)
ADD(IFM_AUTO, IFM_FLAG0);
for (i = 0; i < nrate; i++) {
mword = ieee80211_rate2media(ic,
ic->ic_sup_rates[mode].rs_rates[i], mode);
if (mword == 0)
continue;
ADD(mword, IFM_FLAG0);
}
#undef ADD
#ifdef __NetBSD__
if ((sc->sc_sdhook = shutdownhook_establish(awi_shutdown, sc)) == NULL)
printf("%s: WARNING: unable to establish shutdown hook\n",
ifp->if_xname);
if ((sc->sc_powerhook = powerhook_establish(awi_power, sc)) == NULL)
printf("%s: WARNING: unable to establish power hook\n",
ifp->if_xname);
#endif
sc->sc_attached = 1;
splx(s);
/* ready to accept ioctl */
awi_unlock(sc);
ieee80211_announce(ic);
return 0;
}
int
awi_detach(struct awi_softc *sc)
{
struct ifnet *ifp = AC2IFP(&sc->sc_arp);
int s;
if (!sc->sc_attached)
return 0;
s = splnet();
sc->sc_invalid = 1;
awi_stop(ifp, 1);
while (sc->sc_sleep_cnt > 0) {
wakeup(sc);
(void)tsleep(sc, PWAIT, "awidet", 1);
}
sc->sc_attached = 0;
ieee80211_ifdetach(&sc->sc_ic);
#ifdef __NetBSD__
if_detach(ifp);
shutdownhook_disestablish(sc->sc_sdhook);
powerhook_disestablish(sc->sc_powerhook);
#endif
splx(s);
return 0;
}
#ifdef __NetBSD__
int
awi_activate(struct device *self, enum devact act)
{
struct awi_softc *sc = (struct awi_softc *)self;
struct ifnet *ifp = AC2IFP(&sc->sc_arp);
int s, error = 0;
s = splnet();
switch (act) {
case DVACT_ACTIVATE:
error = EOPNOTSUPP;
break;
case DVACT_DEACTIVATE:
sc->sc_invalid = 1;
if_deactivate(ifp);
break;
}
splx(s);
return error;
}
void
awi_power(int why, void *arg)
{
struct awi_softc *sc = arg;
struct ifnet *ifp = AC2IFP(&sc->sc_arp);
int s;
int ocansleep;
DPRINTF(("awi_power: %d\n", why));
s = splnet();
ocansleep = sc->sc_cansleep;
sc->sc_cansleep = 0;
switch (why) {
case PWR_SUSPEND:
case PWR_STANDBY:
awi_stop(ifp, 1);
break;
case PWR_RESUME:
if (ifp->if_flags & IFF_UP) {
awi_init(ifp);
(void)awi_intr(sc); /* make sure */
}
break;
case PWR_SOFTSUSPEND:
case PWR_SOFTSTANDBY:
case PWR_SOFTRESUME:
break;
}
sc->sc_cansleep = ocansleep;
splx(s);
}
#endif /* __NetBSD__ */
void
awi_shutdown(void *arg)
{
struct awi_softc *sc = arg;
struct ifnet *ifp = AC2IFP(&sc->sc_arp);
if (sc->sc_attached)
awi_stop(ifp, 1);
}
int
awi_intr(void *arg)
{
struct awi_softc *sc = arg;
u_int16_t status;
int handled = 0, ocansleep;
#ifdef AWI_DEBUG
static const char *intname[] = {
"CMD", "RX", "TX", "SCAN_CMPLT",
"CFP_START", "DTIM", "CFP_ENDING", "GROGGY",
"TXDATA", "TXBCAST", "TXPS", "TXCF",
"TXMGT", "#13", "RXDATA", "RXMGT"
};
#endif
if (!sc->sc_enabled || !sc->sc_enab_intr || sc->sc_invalid) {
DPRINTF(("awi_intr: stray interrupt: "
"enabled %d enab_intr %d invalid %d\n",
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 (;;) {
if (awi_intr_lock(sc) != 0)
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;
#ifdef AWI_DEBUG
if (awi_debug > 1) {
int i;
printf("awi_intr: status 0x%04x", status);
for (i = 0; i < sizeof(intname)/sizeof(intname[0]);
i++) {
if (status & (1 << i))
printf(" %s", intname[i]);
}
printf("\n");
}
#endif
handled = 1;
if (status & AWI_INT_RX)
awi_rx_int(sc);
if (status & AWI_INT_TX)
awi_tx_int(sc);
if (status & AWI_INT_CMD)
awi_cmd_done(sc);
if (status & AWI_INT_SCAN_CMPLT) {
/* XXX revisit scanning */
if (sc->sc_ic.ic_state == IEEE80211_S_SCAN &&
sc->sc_substate == AWI_ST_NONE)
;
}
}
sc->sc_cansleep = ocansleep;
am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN);
awi_write_1(sc, AWI_DIS_PWRDN, 0);
return handled;
}
#ifdef __FreeBSD__
static void
awi_init0(void *arg)
{
struct awi_softc *sc = arg;
(void)awi_init(AC2IFP(&sc->sc_arp));
}
#endif
static int
awi_init(struct ifnet *ifp)
{
struct awi_softc *sc = ifp->if_softc;
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211_node *ni = ic->ic_bss;
struct ieee80211_rateset *rs;
int error, rate, i;
DPRINTF(("awi_init: enabled=%d\n", sc->sc_enabled));
if (sc->sc_enabled) {
awi_stop(ifp, 0);
} else {
if (sc->sc_enable)
(*sc->sc_enable)(sc);
sc->sc_enabled = 1;
if ((error = awi_hw_init(sc)) != 0) {
if (sc->sc_disable)
(*sc->sc_disable)(sc);
sc->sc_enabled = 0;
return error;
}
}
ic->ic_state = IEEE80211_S_INIT;
ic->ic_flags &= ~IEEE80211_F_IBSSON;
switch (ic->ic_opmode) {
case IEEE80211_M_STA:
sc->sc_mib_local.Network_Mode = 1;
sc->sc_mib_local.Acting_as_AP = 0;
break;
case IEEE80211_M_IBSS:
ic->ic_flags |= IEEE80211_F_IBSSON;
/* FALLTHRU */
case IEEE80211_M_AHDEMO:
sc->sc_mib_local.Network_Mode = 0;
sc->sc_mib_local.Acting_as_AP = 0;
break;
case IEEE80211_M_HOSTAP:
sc->sc_mib_local.Network_Mode = 1;
sc->sc_mib_local.Acting_as_AP = 1;
break;
case IEEE80211_M_MONITOR:
case IEEE80211_M_WDS:
return ENODEV;
}
#if 0
IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl));
#endif
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] = ic->ic_des_ssid[0].len;
memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], ic->ic_des_ssid[0].ssid,
ic->ic_des_ssid[0].len);
/* configure basic rate */
if (ic->ic_phytype == IEEE80211_T_FH)
rs = &ic->ic_sup_rates[IEEE80211_MODE_FH];
else
rs = &ic->ic_sup_rates[IEEE80211_MODE_11B];
if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
rate = ic->ic_fixed_rate;
} else {
rate = 0;
for (i = 0; i < rs->rs_nrates; i++) {
if ((rs->rs_rates[i] & IEEE80211_RATE_BASIC) &&
rate < (rs->rs_rates[i] & IEEE80211_RATE_VAL))
rate = rs->rs_rates[i] & IEEE80211_RATE_VAL;
}
}
rate *= 5;
LE_WRITE_2(&sc->sc_mib_mac.aStation_Basic_Rate, rate);
if ((error = awi_mode_init(sc)) != 0) {
DPRINTF(("awi_init: awi_mode_init failed %d\n", error));
awi_stop(ifp, 1);
return 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_CA_TX_DATA, sc->sc_txbase);
awi_write_4(sc, AWI_CA_TX_MGT, 0);
awi_write_4(sc, AWI_CA_TX_BCAST, 0);
awi_write_4(sc, AWI_CA_TX_PS, 0);
awi_write_4(sc, AWI_CA_TX_CF, 0);
if ((error = awi_cmd(sc, AWI_CMD_INIT_TX, AWI_WAIT)) != 0) {
DPRINTF(("awi_init: failed to start transmitter: %d\n", error));
awi_stop(ifp, 1);
return error;
}
/* start receiver */
if ((error = awi_cmd(sc, AWI_CMD_INIT_RX, AWI_WAIT)) != 0) {
DPRINTF(("awi_init: failed to start receiver: %d\n", error));
awi_stop(ifp, 1);
return error;
}
sc->sc_rxdoff = awi_read_4(sc, AWI_CA_IRX_DATA_DESC);
sc->sc_rxmoff = awi_read_4(sc, AWI_CA_IRX_PS_DESC);
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
ic->ic_state = IEEE80211_S_INIT;
if (ic->ic_opmode == IEEE80211_M_AHDEMO ||
ic->ic_opmode == IEEE80211_M_HOSTAP) {
ni->ni_chan = ic->ic_des_chan; /* XXX? */
ni->ni_intval = ic->ic_bintval;
ni->ni_rssi = 0;
ni->ni_rstamp = 0;
memset(&ni->ni_tstamp, 0, sizeof(ni->ni_tstamp));
ni->ni_rates =
ic->ic_sup_rates[ieee80211_chan2mode(ni->ni_chan)];
IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr);
if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr);
ni->ni_esslen = ic->ic_des_ssid[0].len;
memcpy(ni->ni_essid, ic->ic_des_ssid[0].ssid, ni->ni_esslen);
ni->ni_capinfo = IEEE80211_CAPINFO_ESS;
if (ic->ic_phytype == IEEE80211_T_FH) {
ni->ni_fhdwell = 200; /* XXX */
ni->ni_fhindex = 1;
}
} else {
ni->ni_capinfo = IEEE80211_CAPINFO_IBSS;
memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN);
ni->ni_esslen = 0;
}
if (ic->ic_flags & IEEE80211_F_PRIVACY)
ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY;
if (ic->ic_opmode != IEEE80211_M_AHDEMO)
ic->ic_flags |= IEEE80211_F_SIBSS;
ic->ic_state = IEEE80211_S_SCAN; /*XXX*/
sc->sc_substate = AWI_ST_NONE;
ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
} else {
/* XXX check sc->sc_cur_chan */
ni->ni_chan = &ic->ic_channels[sc->sc_cur_chan];
ic->ic_curchan = ni->ni_chan;
ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
}
return 0;
}
static void
awi_stop(struct ifnet *ifp, int disable)
{
struct awi_softc *sc = ifp->if_softc;
if (!sc->sc_enabled)
return;
DPRINTF(("awi_stop(%d)\n", disable));
ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1);
if (!sc->sc_invalid) {
if (sc->sc_cmd_inprog)
(void)awi_cmd_wait(sc);
(void)awi_cmd(sc, AWI_CMD_KILL_RX, AWI_WAIT);
sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX;
awi_write_1(sc, AWI_CA_FTX_DATA, 1);
awi_write_1(sc, AWI_CA_FTX_MGT, 0);
awi_write_1(sc, AWI_CA_FTX_BCAST, 0);
awi_write_1(sc, AWI_CA_FTX_PS, 0);
awi_write_1(sc, AWI_CA_FTX_CF, 0);
(void)awi_cmd(sc, AWI_CMD_FLUSH_TX, AWI_WAIT);
}
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING|IFF_DRV_OACTIVE);
ifp->if_timer = 0;
sc->sc_tx_timer = sc->sc_rx_timer = 0;
if (sc->sc_rxpend != NULL) {
m_freem(sc->sc_rxpend);
sc->sc_rxpend = NULL;
}
IFQ_PURGE(&ifp->if_snd);
if (disable) {
if (!sc->sc_invalid)
am79c930_gcr_setbits(&sc->sc_chip,
AM79C930_GCR_CORESET);
if (sc->sc_disable)
(*sc->sc_disable)(sc);
sc->sc_enabled = 0;
}
}
static void
awi_start(struct ifnet *ifp)
{
struct awi_softc *sc = ifp->if_softc;
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211_node *ni;
struct ieee80211_frame *wh;
struct ether_header *eh;
struct mbuf *m, *m0;
int len, dowep;
u_int32_t txd, frame, ntxd;
u_int8_t rate;
if (!sc->sc_enabled || sc->sc_invalid)
return;
for (;;) {
txd = sc->sc_txnext;
IF_POLL(&ic->ic_mgtq, m0);
dowep = 0;
ni = NULL;
if (m0 != NULL) {
len = m0->m_pkthdr.len;
if (awi_next_txd(sc, len, &frame, &ntxd)) {
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
break;
}
IF_DEQUEUE(&ic->ic_mgtq, m0);
ni = (struct ieee80211_node *) m0->m_pkthdr.rcvif;
m0->m_pkthdr.rcvif = NULL;
} else {
if (ic->ic_state != IEEE80211_S_RUN)
break;
IFQ_POLL(&ifp->if_snd, m0);
if (m0 == NULL)
break;
/*
* Need to calculate the real length to determine
* if the transmit buffer has a room for the packet.
*/
len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame);
if (!(ifp->if_flags & IFF_LINK0) && !sc->sc_adhoc_ap)
len += sizeof(struct llc) -
sizeof(struct ether_header);
if (ic->ic_flags & IEEE80211_F_PRIVACY) {
/* XXX other crypto */
dowep = 1;
len += IEEE80211_WEP_IVLEN +
IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN;
}
if (awi_next_txd(sc, len, &frame, &ntxd)) {
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
break;
}
IFQ_DEQUEUE(&ifp->if_snd, m0);
#if NBPFILTER > 0
BPF_MTAP(ifp, m0);
#endif
if ((ifp->if_flags & IFF_LINK0) || sc->sc_adhoc_ap)
m0 = awi_ether_encap(sc, m0);
else {
if (m0->m_len < sizeof(struct ether_header) &&
((m0 = m_pullup(m0, sizeof(struct ether_header)))) == NULL) {
ifp->if_oerrors++;
continue;
}
eh = mtod(m0, struct ether_header *);
ni = ieee80211_find_txnode(ic, eh->ether_dhost);
if (ni == NULL)
goto bad;
if ((ni->ni_flags & IEEE80211_NODE_PWR_MGT) &&
(m0->m_flags & M_PWR_SAV) == 0) {
ieee80211_pwrsave(ni, m0);
continue;
}
m0 = ieee80211_encap(ic, m0, ni);
}
if (m0 == NULL)
goto bad;
wh = mtod(m0, struct ieee80211_frame *);
if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
(ic->ic_opmode == IEEE80211_M_HOSTAP ||
ic->ic_opmode == IEEE80211_M_IBSS) &&
sc->sc_adhoc_ap == 0 &&
(ifp->if_flags & IFF_LINK0) == 0 &&
(wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
IEEE80211_FC0_TYPE_DATA && ni == NULL) {
bad:
if (m0 != NULL)
m_freem(m0);
ifp->if_oerrors++;
if (ni != NULL)
ieee80211_free_node(ni);
continue;
}
ifp->if_opackets++;
}
#if NBPFILTER > 0
if (bpf_peers_present(ic->ic_rawbpf))
bpf_mtap(ic->ic_rawbpf, m0);
#endif
if (dowep) {
struct ieee80211_key *k;
k = ieee80211_crypto_encap(ic, ni, m0);
if (k == NULL) {
if (ni != NULL)
ieee80211_free_node(ni);
m_freem(m0);
continue;
}
}
#ifdef DIAGNOSTIC
if (m0->m_pkthdr.len != len) {
if_printf(ifp, "length %d should be %d\n",
m0->m_pkthdr.len, len);
m_freem(m0);
ifp->if_oerrors++;
if (ni != NULL)
ieee80211_free_node(ni);
continue;
}
#endif
if ((ifp->if_flags & IFF_DEBUG) && (ifp->if_flags & IFF_LINK2))
ieee80211_dump_pkt(ic, m0->m_data, m0->m_len,
ic->ic_bss->ni_rates.
rs_rates[ic->ic_bss->ni_txrate] &
IEEE80211_RATE_VAL, -1);
for (m = m0, len = 0; 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 = (ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] &
IEEE80211_RATE_VAL) * 5;
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;
sc->sc_tx_timer = 5;
ifp->if_timer = 1;
}
}
static void
awi_watchdog(struct ifnet *ifp)
{
struct awi_softc *sc = ifp->if_softc;
u_int32_t prevdone;
int ocansleep;
ifp->if_timer = 0;
if (!sc->sc_enabled || sc->sc_invalid)
return;
ocansleep = sc->sc_cansleep;
sc->sc_cansleep = 0;
if (sc->sc_tx_timer) {
if (--sc->sc_tx_timer == 0) {
printf("%s: device timeout\n", ifp->if_xname);
prevdone = sc->sc_txdone;
awi_tx_int(sc);
if (sc->sc_txdone == prevdone) {
ifp->if_oerrors++;
awi_init(ifp);
goto out;
}
}
ifp->if_timer = 1;
}
if (sc->sc_rx_timer) {
if (--sc->sc_rx_timer == 0) {
if (sc->sc_ic.ic_state == IEEE80211_S_RUN) {
ieee80211_new_state(&sc->sc_ic,
IEEE80211_S_SCAN, -1);
goto out;
}
} else
ifp->if_timer = 1;
}
/* TODO: rate control */
out:
sc->sc_cansleep = ocansleep;
}
static int
awi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct awi_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
int s, error;
s = splnet();
/* serialize ioctl, since we may sleep */
if ((error = awi_lock(sc)) != 0)
goto cantlock;
switch (cmd) {
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP) {
if (sc->sc_enabled) {
/*
* To avoid rescanning another access point,
* do not call awi_init() here. Instead,
* only reflect promisc mode settings.
*/
error = awi_mode_init(sc);
} else
error = awi_init(ifp);
} else if (sc->sc_enabled)
awi_stop(ifp, 1);
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->sc_ic.ic_media, cmd);
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
#ifdef __FreeBSD__
error = ENETRESET; /* XXX */
#else
error = (cmd == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->sc_ic.ic_ec) :
ether_delmulti(ifr, &sc->sc_ic.ic_ec);
#endif
if (error == ENETRESET) {
/* do not rescan */
if (sc->sc_enabled)
error = awi_mode_init(sc);
else
error = 0;
}
break;
default:
error = ieee80211_ioctl(&sc->sc_ic, cmd, data);
if (error == ENETRESET) {
if (sc->sc_enabled)
error = awi_init(ifp);
else
error = 0;
}
break;
}
awi_unlock(sc);
cantlock:
splx(s);
return error;
}
/*
* Called from ifmedia_ioctl via awi_ioctl with lock obtained.
*
* TBD factor with ieee80211_media_change
*/
static int
awi_media_change(struct ifnet *ifp)
{
struct awi_softc *sc = ifp->if_softc;
struct ieee80211com *ic = &sc->sc_ic;
struct ifmedia_entry *ime;
enum ieee80211_opmode newmode;
int i, rate, newadhoc_ap, error = 0;
ime = ic->ic_media.ifm_cur;
if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) {
i = -1;
rate = ic->ic_fixed_rate;
} else {
struct ieee80211_rateset *rs =
&ic->ic_sup_rates[(ic->ic_phytype == IEEE80211_T_FH)
? IEEE80211_MODE_FH : IEEE80211_MODE_11B];
rate = ieee80211_media2rate(ime->ifm_media);
if (rate == 0)
return EINVAL;
for (i = 0; i < rs->rs_nrates; i++) {
if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate)
break;
}
if (i == rs->rs_nrates)
return EINVAL;
}
if (ic->ic_fixed_rate != rate) {
ic->ic_fixed_rate = rate;
error = ENETRESET;
}
/*
* combination of mediaopt
*
* hostap adhoc flag0 opmode adhoc_ap comment
* + - - HOSTAP 0 HostAP
* - + - IBSS 0 IBSS
* - + + AHDEMO 0 WaveLAN adhoc
* - - + IBSS 1 Melco old Sta
* also LINK0
* - - - STA 0 Infra Station
*/
newadhoc_ap = 0;
if (ime->ifm_media & IFM_IEEE80211_HOSTAP)
newmode = IEEE80211_M_HOSTAP;
else if (ime->ifm_media & IFM_IEEE80211_ADHOC) {
if (ic->ic_phytype == IEEE80211_T_DS &&
(ime->ifm_media & IFM_FLAG0))
newmode = IEEE80211_M_AHDEMO;
else
newmode = IEEE80211_M_IBSS;
} else if (ime->ifm_media & IFM_FLAG0) {
newmode = IEEE80211_M_IBSS;
newadhoc_ap = 1;
} else
newmode = IEEE80211_M_STA;
if (ic->ic_opmode != newmode || sc->sc_adhoc_ap != newadhoc_ap) {
ic->ic_opmode = newmode;
sc->sc_adhoc_ap = newadhoc_ap;
error = ENETRESET;
}
if (error == ENETRESET) {
if (sc->sc_enabled)
error = awi_init(ifp);
else
error = 0;
}
return error;
}
static void
awi_media_status(struct ifnet *ifp, struct ifmediareq *imr)
{
struct awi_softc *sc = ifp->if_softc;
struct ieee80211com *ic = &sc->sc_ic;
int rate;
enum ieee80211_phymode mode;
imr->ifm_status = IFM_AVALID;
if (ic->ic_state == IEEE80211_S_RUN)
imr->ifm_status |= IFM_ACTIVE;
imr->ifm_active = IFM_IEEE80211;
if (ic->ic_phytype == IEEE80211_T_FH)
mode = IEEE80211_MODE_FH;
else
mode = IEEE80211_MODE_11B;
if (ic->ic_state == IEEE80211_S_RUN) {
rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] &
IEEE80211_RATE_VAL;
} else {
if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE)
rate = 0;
else
rate = ic->ic_fixed_rate;
}
imr->ifm_active |= ieee80211_rate2media(ic, rate, mode);
switch (ic->ic_opmode) {
case IEEE80211_M_MONITOR: /* we should never reach here */
case IEEE80211_M_WDS:
break;
case IEEE80211_M_STA:
break;
case IEEE80211_M_IBSS:
if (sc->sc_adhoc_ap)
imr->ifm_active |= IFM_FLAG0;
else
imr->ifm_active |= IFM_IEEE80211_ADHOC;
break;
case IEEE80211_M_AHDEMO:
imr->ifm_active |= IFM_IEEE80211_ADHOC | IFM_FLAG0;
break;
case IEEE80211_M_HOSTAP:
imr->ifm_active |= IFM_IEEE80211_HOSTAP;
break;
}
}
static int
awi_mode_init(struct awi_softc *sc)
{
struct ifnet *ifp = AC2IFP(&sc->sc_arp);
int n, error;
#ifdef __FreeBSD__
struct ifmultiaddr *ifma;
#else
struct ether_multi *enm;
struct ether_multistep step;
#endif
/* reinitialize muticast filter */
n = 0;
sc->sc_mib_local.Accept_All_Multicast_Dis = 0;
if (sc->sc_ic.ic_opmode != IEEE80211_M_HOSTAP &&
(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_flags & IFF_ALLMULTI)
goto set_mib;
IF_ADDR_LOCK(ifp);
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
if (n == AWI_GROUP_ADDR_SIZE) {
IF_ADDR_UNLOCK(ifp);
goto set_mib;
}
IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n],
LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
n++;
}
IF_ADDR_UNLOCK(ifp);
#else
ETHER_FIRST_MULTI(step, &sc->sc_ic.ic_ec, enm);
while (enm != NULL) {
if (n == AWI_GROUP_ADDR_SIZE ||
!IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi))
goto set_mib;
IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n],
enm->enm_addrlo);
n++;
ETHER_NEXT_MULTI(step, enm);
}
#endif
for (; n < AWI_GROUP_ADDR_SIZE; n++)
memset(sc->sc_mib_addr.aGroup_Addresses[n], 0,
IEEE80211_ADDR_LEN);
sc->sc_mib_local.Accept_All_Multicast_Dis = 1;
set_mib:
#ifndef __FreeBSD__
if (sc->sc_mib_local.Accept_All_Multicast_Dis)
ifp->if_flags &= ~IFF_ALLMULTI;
else
ifp->if_flags |= IFF_ALLMULTI;
#endif
sc->sc_mib_mgt.Wep_Required =
(sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) ? AWI_WEP_ON : AWI_WEP_OFF;
if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR, AWI_WAIT)) ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC, AWI_WAIT)) ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, AWI_WAIT)) ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY, AWI_WAIT))) {
DPRINTF(("awi_mode_init: MIB set failed: %d\n", error));
return error;
}
return 0;
}
static void
awi_rx_int(struct awi_softc *sc)
{
struct ieee80211com *ic = &sc->sc_ic;
struct ifnet *ifp = AC2IFP(&sc->sc_arp);
struct ieee80211_node *ni;
u_int8_t state, rate, rssi;
u_int16_t len;
u_int32_t frame, next, rstamp, 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 (sc->sc_substate != AWI_ST_NONE)
goto rx_next;
if (state & AWI_RXD_ST_RXERROR) {
ifp->if_ierrors++;
goto rx_next;
}
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;
rstamp = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME);
m = awi_devget(sc, frame, len);
if (m == NULL) {
ifp->if_ierrors++;
goto rx_next;
}
if (state & AWI_RXD_ST_LF) {
/* TODO check my bss */
if (!(sc->sc_ic.ic_flags & IEEE80211_F_SIBSS) &&
sc->sc_ic.ic_state == IEEE80211_S_RUN) {
sc->sc_rx_timer = 10;
ifp->if_timer = 1;
}
if ((ifp->if_flags & IFF_DEBUG) &&
(ifp->if_flags & IFF_LINK2))
ieee80211_dump_pkt(ic,
m->m_data, m->m_len,
rate / 5, rssi);
if ((ifp->if_flags & IFF_LINK0) ||
sc->sc_adhoc_ap)
m = awi_ether_modcap(sc, m);
else
m = m_pullup(m,
sizeof(struct ieee80211_frame_min));
if (m == NULL) {
ifp->if_ierrors++;
goto rx_next;
}
ni = ieee80211_find_rxnode(ic,
mtod(m, struct ieee80211_frame_min *));
/* XXX 0 for noise floor */
ieee80211_input(ic, m, ni, rssi, 0, rstamp);
ieee80211_free_node(ni);
} else
sc->sc_rxpend = m;
rx_next:
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 void
awi_tx_int(struct awi_softc *sc)
{
struct ifnet *ifp = AC2IFP(&sc->sc_arp);
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;
}
DPRINTF2(("awi_txint: txdone %d txnext %d txbase %d txend %d\n",
sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend));
sc->sc_tx_timer = 0;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
awi_start(ifp);
}
static struct mbuf *
awi_devget(struct awi_softc *sc, u_int32_t off, u_int16_t len)
{
struct ifnet *ifp = AC2IFP(&sc->sc_arp);
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;
m = top;
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 = 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 (top == NULL) {
int hdrlen = sizeof(struct ieee80211_frame) +
sizeof(struct llc);
caddr_t newdata = (caddr_t)
ALIGN(m->m_data + hdrlen) - hdrlen;
m->m_len -= newdata - m->m_data;
m->m_data = newdata;
}
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;
}
if (top != NULL) {
/* Strip trailing 802.11 MAC FCS. */
m_adj(top, -IEEE80211_CRC_LEN);
}
return top;
}
/*
* Initialize hardware and start firmware to accept commands.
* Called everytime after power on firmware.
*/
static int
awi_hw_init(struct awi_softc *sc)
{
u_int8_t status;
u_int16_t intmask;
int i, error;
sc->sc_enab_intr = 0;
sc->sc_invalid = 0; /* XXX: really? */
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);
awi_write_1(sc, AWI_CMD, 0);
awi_write_1(sc, AWI_BANNER, 0);
am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET);
DELAY(100);
/* wait for selftest completion */
for (i = 0; ; i++) {
if (sc->sc_invalid)
return ENXIO;
if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) {
printf("%s: failed to complete selftest (timeout)\n",
AC2IFP(&sc->sc_arp)->if_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",
AC2IFP(&sc->sc_arp)->if_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",
AC2IFP(&sc->sc_arp)->if_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);
/* issuing interface test command */
error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT);
if (error) {
printf("%s: failed to complete selftest",
AC2IFP(&sc->sc_arp)->if_xname);
if (error == ENXIO)
printf(" (no hardware)\n");
else if (error != EWOULDBLOCK)
printf(" (error %d)\n", error);
else if (sc->sc_cansleep)
printf(" (lost interrupt)\n");
else
printf(" (command timeout)\n");
return error;
}
/* Initialize VBM */
awi_write_1(sc, AWI_VBM_OFFSET, 0);
awi_write_1(sc, AWI_VBM_LENGTH, 1);
awi_write_1(sc, AWI_VBM_BITMAP, 0);
return 0;
}
/*
* 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(struct awi_softc *sc)
{
int chan, i, error;
struct ieee80211com *ic = &sc->sc_ic;
struct awi_chanset *cs;
if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) {
printf("%s: failed to get default mib value (error %d)\n",
AC2IFP(&sc->sc_arp)->if_xname, error);
return error;
}
memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail));
for (cs = awi_chanset; ; cs++) {
if (cs->cs_type == 0) {
printf("%s: failed to set available channel\n",
AC2IFP(&sc->sc_arp)->if_xname);
return ENXIO;
}
if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type &&
cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain)
break;
}
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
for (i = cs->cs_min; i <= cs->cs_max; i++) {
chan = IEEE80211_FH_CHAN(i % 3 + 1, i);
setbit(sc->sc_ic.ic_chan_avail, chan);
/* XXX for FHSS, does frequency matter? */
ic->ic_channels[chan].ic_freq = 0;
ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS;
/*
* According to the IEEE 802.11 specification,
* hop pattern parameter for FH phy should be
* incremented by 3 for given hop chanset, i.e.,
* the chanset parameter is calculated for given
* hop patter. However, BayStack 650 Access Points
* apparently use fixed hop chanset parameter value
* 1 for any hop pattern. So we also try this
* combination of hop chanset and pattern.
*/
chan = IEEE80211_FH_CHAN(1, i);
setbit(sc->sc_ic.ic_chan_avail, chan);
ic->ic_channels[chan].ic_freq = 0; /* XXX */
ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS;
}
} else {
for (i = cs->cs_min; i <= cs->cs_max; i++) {
setbit(sc->sc_ic.ic_chan_avail, i);
ic->ic_channels[i].ic_freq =
ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B;
}
}
sc->sc_cur_chan = cs->cs_def;
ic->ic_curchan = &ic->ic_channels[cs->cs_def]; /* XXX? */
sc->sc_mib_local.Fragmentation_Dis = 1;
sc->sc_mib_local.Add_PLCP_Dis = 0;
sc->sc_mib_local.MAC_Hdr_Prsv = 0;
sc->sc_mib_local.Rx_Mgmt_Que_En = 0;
sc->sc_mib_local.Re_Assembly_Dis = 1;
sc->sc_mib_local.Strip_PLCP_Dis = 0;
sc->sc_mib_local.Power_Saving_Mode_Dis = 1;
sc->sc_mib_local.Accept_All_Multicast_Dis = 1;
sc->sc_mib_local.Check_Seq_Cntl_Dis = 0;
sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0;
sc->sc_mib_local.Network_Mode = 1;
sc->sc_mib_local.PWD_Lvl = 0;
sc->sc_mib_local.CFP_Mode = 0;
/* 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.Acting_as_AP = 0;
sc->sc_mib_local.Fill_CFP = 0;
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_mgt.aPower_Mgt_Mode = 0;
sc->sc_mib_mgt.aDTIM_Period = 1;
LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0);
return 0;
}
static int
awi_mib(struct awi_softc *sc, u_int8_t cmd, u_int8_t mib, int wflag)
{
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) {
if ((error = awi_cmd_wait(sc)) != 0) {
if (error == EWOULDBLOCK)
DPRINTF(("awi_mib: cmd %d inprog",
sc->sc_cmd_inprog));
return error;
}
}
sc->sc_cmd_inprog = cmd;
if (cmd == AWI_CMD_SET_MIB)
awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size);
awi_write_1(sc, AWI_CA_MIB_TYPE, mib);
awi_write_1(sc, AWI_CA_MIB_SIZE, size);
awi_write_1(sc, AWI_CA_MIB_INDEX, 0);
if ((error = awi_cmd(sc, cmd, wflag)) != 0)
return error;
if (cmd == AWI_CMD_GET_MIB) {
awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size);
#ifdef AWI_DEBUG
if (awi_debug) {
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(struct awi_softc *sc, u_int8_t cmd, int wflag)
{
u_int8_t status;
int error = 0;
#ifdef AWI_DEBUG
static const char *cmdname[] = {
"IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX",
"KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME"
};
#endif
#ifdef AWI_DEBUG
if (awi_debug > 1) {
if (cmd >= sizeof(cmdname)/sizeof(cmdname[0]))
printf("awi_cmd: #%d", cmd);
else
printf("awi_cmd: %s", cmdname[cmd]);
printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait");
}
#endif
sc->sc_cmd_inprog = cmd;
awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE);
awi_write_1(sc, AWI_CMD, cmd);
if (wflag == AWI_NOWAIT)
return EINPROGRESS;
if ((error = awi_cmd_wait(sc)) != 0)
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",
AC2IFP(&sc->sc_arp)->if_xname, cmd, status);
return ENXIO;
}
return 0;
}
static int
awi_cmd_wait(struct awi_softc *sc)
{
int i, error = 0;
i = 0;
while (sc->sc_cmd_inprog) {
if (sc->sc_invalid)
return ENXIO;
if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) {
printf("%s: failed to access hardware\n",
AC2IFP(&sc->sc_arp)->if_xname);
sc->sc_invalid = 1;
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;
}
if (error) {
DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n",
sc->sc_cmd_inprog, error));
}
return error;
}
static void
awi_cmd_done(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 */
cmd = sc->sc_cmd_inprog;
sc->sc_cmd_inprog = 0;
wakeup(sc);
awi_write_1(sc, AWI_CMD, 0);
if (status != AWI_STAT_OK) {
printf("%s: command %d failed %x\n",
AC2IFP(&sc->sc_arp)->if_xname, cmd, status);
sc->sc_substate = AWI_ST_NONE;
return;
}
if (sc->sc_substate != AWI_ST_NONE)
(void)ieee80211_new_state(&sc->sc_ic, sc->sc_nstate, -1);
}
static int
awi_next_txd(struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t *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(struct awi_softc *sc)
{
int error = 0;
#ifdef __NetBSD__
if (curlwp == NULL)
#else
if (curproc == NULL)
#endif
{
/*
* 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) {
if (sc->sc_invalid)
return ENXIO;
return EWOULDBLOCK;
}
sc->sc_busy = 1;
sc->sc_cansleep = 0;
return 0;
}
while (sc->sc_busy) {
if (sc->sc_invalid)
return ENXIO;
sc->sc_sleep_cnt++;
error = tsleep(sc, PWAIT | PCATCH, "awilck", 0);
sc->sc_sleep_cnt--;
if (error)
return error;
}
sc->sc_busy = 1;
sc->sc_cansleep = 1;
return 0;
}
static void
awi_unlock(struct awi_softc *sc)
{
sc->sc_busy = 0;
sc->sc_cansleep = 0;
if (sc->sc_sleep_cnt)
wakeup(sc);
}
static int
awi_intr_lock(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++) {
if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0)
break;
DELAY(5);
}
if (status != 0)
break;
awi_write_1(sc, AWI_LOCKOUT_MAC, 1);
if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0)
break;
awi_write_1(sc, AWI_LOCKOUT_MAC, 0);
}
if (status != 0) {
printf("%s: failed to lock interrupt\n",
AC2IFP(&sc->sc_arp)->if_xname);
return ENXIO;
}
return 0;
}
static void
awi_intr_unlock(struct awi_softc *sc)
{
awi_write_1(sc, AWI_LOCKOUT_MAC, 0);
}
static int
awi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
{
struct ifnet *ifp = ic->ic_ifp;
struct awi_softc *sc = ifp->if_softc;
struct ieee80211_node *ni;
int error;
u_int8_t newmode;
enum ieee80211_state ostate;
#ifdef AWI_DEBUG
static const char *stname[] =
{ "INIT", "SCAN", "AUTH", "ASSOC", "RUN" };
static const char *substname[] =
{ "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD",
"SUB_INIT", "SUB_SETSS", "SUB_SYNC" };
#endif /* AWI_DEBUG */
ostate = ic->ic_state;
DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate],
stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate]));
/* set LED */
switch (nstate) {
case IEEE80211_S_INIT:
awi_drvstate(sc, AWI_DRV_RESET);
break;
case IEEE80211_S_SCAN:
if (ic->ic_opmode == IEEE80211_M_IBSS ||
ic->ic_opmode == IEEE80211_M_AHDEMO)
awi_drvstate(sc, AWI_DRV_ADHSC);
else
awi_drvstate(sc, AWI_DRV_INFSY);
break;
case IEEE80211_S_AUTH:
awi_drvstate(sc, AWI_DRV_INFSY);
break;
case IEEE80211_S_ASSOC:
awi_drvstate(sc, AWI_DRV_INFAUTH);
break;
case IEEE80211_S_RUN:
if (ic->ic_opmode == IEEE80211_M_IBSS ||
ic->ic_opmode == IEEE80211_M_AHDEMO)
awi_drvstate(sc, AWI_DRV_ADHSY);
else
awi_drvstate(sc, AWI_DRV_INFASSOC);
break;
}
if (nstate == IEEE80211_S_INIT) {
sc->sc_substate = AWI_ST_NONE;
ic->ic_flags &= ~IEEE80211_F_SIBSS;
return (*sc->sc_newstate)(ic, nstate, arg);
}
/* state transition */
if (nstate == IEEE80211_S_SCAN) {
/* SCAN substate */
if (sc->sc_substate == AWI_ST_NONE) {
sc->sc_nstate = nstate; /* next state in transition */
sc->sc_substate = AWI_ST_SCAN_INIT;
}
switch (sc->sc_substate) {
case AWI_ST_SCAN_INIT:
sc->sc_substate = AWI_ST_SCAN_SETMIB;
switch (ostate) {
case IEEE80211_S_RUN:
/* beacon miss */
if (ifp->if_flags & IFF_DEBUG)
printf("%s: no recent beacons from %s;"
" rescanning\n",
ifp->if_xname,
ether_sprintf(ic->ic_bss->ni_bssid));
/* FALLTHRU */
case IEEE80211_S_AUTH:
case IEEE80211_S_ASSOC:
case IEEE80211_S_INIT:
/* XXX revisit scanning */;
break;
case IEEE80211_S_SCAN:
/* scan next */
break;
}
if (ic->ic_flags & IEEE80211_F_ASCAN)
newmode = AWI_SCAN_ACTIVE;
else
newmode = AWI_SCAN_PASSIVE;
if (sc->sc_mib_mgt.aScan_Mode != newmode) {
sc->sc_mib_mgt.aScan_Mode = newmode;
if ((error = awi_mib(sc, AWI_CMD_SET_MIB,
AWI_MIB_MGT, AWI_NOWAIT)) != 0)
break;
}
/* FALLTHRU */
case AWI_ST_SCAN_SETMIB:
sc->sc_substate = AWI_ST_SCAN_SCCMD;
if (sc->sc_cmd_inprog) {
if ((error = awi_cmd_wait(sc)) != 0)
break;
}
sc->sc_cmd_inprog = AWI_CMD_SCAN;
ni = ic->ic_bss;
awi_write_2(sc, AWI_CA_SCAN_DURATION,
(ic->ic_flags & IEEE80211_F_ASCAN) ?
AWI_ASCAN_DURATION : AWI_PSCAN_DURATION);
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
awi_write_1(sc, AWI_CA_SCAN_SET,
IEEE80211_FH_CHANSET(
ieee80211_chan2ieee(ic, ic->ic_curchan)));
awi_write_1(sc, AWI_CA_SCAN_PATTERN,
IEEE80211_FH_CHANPAT(
ieee80211_chan2ieee(ic, ic->ic_curchan)));
awi_write_1(sc, AWI_CA_SCAN_IDX, 1);
} else {
awi_write_1(sc, AWI_CA_SCAN_SET,
ieee80211_chan2ieee(ic, ic->ic_curchan));
awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0);
awi_write_1(sc, AWI_CA_SCAN_IDX, 0);
}
awi_write_1(sc, AWI_CA_SCAN_SUSP, 0);
sc->sc_cur_chan = ieee80211_chan2ieee(ic, ic->ic_curchan);
if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT))
!= 0)
break;
/* FALLTHRU */
case AWI_ST_SCAN_SCCMD:
ic->ic_state = nstate;
sc->sc_substate = AWI_ST_NONE;
error = EINPROGRESS;
break;
default:
DPRINTF(("awi_newstate: unexpected state %s/%s\n",
stname[nstate], substname[sc->sc_substate]));
sc->sc_substate = AWI_ST_NONE;
error = EIO;
break;
}
goto out;
}
if (ostate == IEEE80211_S_SCAN) {
/* set SSID and channel */
/* substate */
if (sc->sc_substate == AWI_ST_NONE) {
sc->sc_nstate = nstate; /* next state in transition */
sc->sc_substate = AWI_ST_SUB_INIT;
}
ni = ic->ic_bss;
switch (sc->sc_substate) {
case AWI_ST_SUB_INIT:
sc->sc_substate = AWI_ST_SUB_SETSS;
IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID,
ni->ni_bssid);
memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0,
AWI_ESS_ID_SIZE);
sc->sc_mib_mgt.aCurrent_ESS_ID[0] =
IEEE80211_ELEMID_SSID;
sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen;
memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2],
ni->ni_essid, ni->ni_esslen);
LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period,
ni->ni_intval);
if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT,
AWI_NOWAIT)) != 0)
break;
/* FALLTHRU */
case AWI_ST_SUB_SETSS:
sc->sc_substate = AWI_ST_SUB_SYNC;
if (sc->sc_cmd_inprog) {
if ((error = awi_cmd_wait(sc)) != 0)
break;
}
sc->sc_cmd_inprog = AWI_CMD_SYNC;
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
awi_write_1(sc, AWI_CA_SYNC_SET,
IEEE80211_FH_CHANSET(
ieee80211_chan2ieee(ic, ni->ni_chan)));
awi_write_1(sc, AWI_CA_SYNC_PATTERN,
IEEE80211_FH_CHANPAT(
ieee80211_chan2ieee(ic, ni->ni_chan)));
awi_write_1(sc, AWI_CA_SYNC_IDX,
ni->ni_fhindex);
awi_write_2(sc, AWI_CA_SYNC_DWELL,
ni->ni_fhdwell);
} else {
awi_write_1(sc, AWI_CA_SYNC_SET,
ieee80211_chan2ieee(ic, ni->ni_chan));
awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0);
awi_write_1(sc, AWI_CA_SYNC_IDX, 0);
awi_write_2(sc, AWI_CA_SYNC_DWELL, 0);
}
if (ic->ic_flags & IEEE80211_F_SIBSS) {
memset(&ni->ni_tstamp, 0, sizeof(ni->ni_tstamp));
ni->ni_rstamp = 0;
awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1);
} else
awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0);
awi_write_2(sc, AWI_CA_SYNC_MBZ, 0);
awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP,
ni->ni_tstamp.data, 8);
awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp);
sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan);
if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT))
!= 0)
break;
/* FALLTHRU */
case AWI_ST_SUB_SYNC:
sc->sc_substate = AWI_ST_NONE;
if (ic->ic_flags & IEEE80211_F_SIBSS) {
if ((error = awi_mib(sc, AWI_CMD_GET_MIB,
AWI_MIB_MGT, AWI_WAIT)) != 0)
break;
IEEE80211_ADDR_COPY(ni->ni_bssid,
&sc->sc_mib_mgt.aCurrent_BSS_ID);
} else {
if (nstate == IEEE80211_S_RUN) {
sc->sc_rx_timer = 10;
ifp->if_timer = 1;
}
}
error = 0;
break;
default:
DPRINTF(("awi_newstate: unexpected state %s/%s\n",
stname[nstate], substname[sc->sc_substate]));
sc->sc_substate = AWI_ST_NONE;
error = EIO;
break;
}
goto out;
}
sc->sc_substate = AWI_ST_NONE;
return (*sc->sc_newstate)(ic, nstate, arg);
out:
if (error != 0) {
if (error == EINPROGRESS)
error = 0;
return error;
}
return (*sc->sc_newstate)(ic, nstate, arg);
}
static void
awi_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0,
struct ieee80211_node *ni,
int subtype, int rssi, int nf, u_int32_t rstamp)
{
struct awi_softc *sc = ic->ic_ifp->if_softc;
/* probe request is handled by hardware */
if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_REQ)
return;
(*sc->sc_recv_mgmt)(ic, m0, ni, subtype, rssi, nf, rstamp);
}
static int
awi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni,
int type, int arg)
{
struct awi_softc *sc = ic->ic_ifp->if_softc;
/* probe request is handled by hardware */
if (type == IEEE80211_FC0_SUBTYPE_PROBE_REQ)
return 0;
return (*sc->sc_send_mgmt)(ic, ni, type, arg);
}
static struct mbuf *
awi_ether_encap(struct awi_softc *sc, struct mbuf *m)
{
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211_node *ni = ic->ic_bss;
struct ether_header *eh;
struct ieee80211_frame *wh;
if (m->m_len < sizeof(struct ether_header)) {
m = m_pullup(m, sizeof(struct ether_header));
if (m == NULL)
return NULL;
}
eh = mtod(m, struct ether_header *);
M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT);
if (m == NULL)
return NULL;
wh = mtod(m, struct ieee80211_frame *);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA;
*(u_int16_t *)wh->i_dur = 0;
*(u_int16_t *)wh->i_seq =
htole16(ni->ni_txseqs[0] << IEEE80211_SEQ_SEQ_SHIFT);
ni->ni_txseqs[0]++;
if (ic->ic_opmode == IEEE80211_M_IBSS ||
ic->ic_opmode == IEEE80211_M_AHDEMO) {
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
if (sc->sc_adhoc_ap)
IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr);
else
IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost);
IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost);
IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid);
} else {
wh->i_fc[1] = IEEE80211_FC1_DIR_TODS;
IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid);
IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost);
IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost);
}
return m;
}
static struct mbuf *
awi_ether_modcap(struct awi_softc *sc, struct mbuf *m)
{
struct ieee80211com *ic = &sc->sc_ic;
struct ether_header eh;
struct ieee80211_frame wh;
struct llc *llc;
if (m->m_len < sizeof(wh) + sizeof(eh)) {
m = m_pullup(m, sizeof(wh) + sizeof(eh));
if (m == NULL)
return NULL;
}
memcpy(&wh, mtod(m, caddr_t), sizeof(wh));
if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA))
return m;
memcpy(&eh, mtod(m, caddr_t) + sizeof(wh), sizeof(eh));
m_adj(m, sizeof(eh) - sizeof(*llc));
if (ic->ic_opmode == IEEE80211_M_IBSS ||
ic->ic_opmode == IEEE80211_M_AHDEMO)
IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost);
memcpy(mtod(m, caddr_t), &wh, sizeof(wh));
llc = (struct llc *)(mtod(m, caddr_t) + sizeof(wh));
llc->llc_dsap = 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;
llc->llc_snap.ether_type = eh.ether_type;
return m;
}
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