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freebsd-dev/sys/dev/wi/if_wi.c
Adrian Chadd 0caafbf948 If an interrupt is received with no vap attached, just fail LINK events. 
This fixes a NULL pointer dereference which occurs if the vap list is
empty but someone brings up the wi0 interface.
2012-02-25 08:01:29 +00:00

2133 lines
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/*-
* Copyright (c) 1997, 1998, 1999
* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
*
* 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 Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
* 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.
*/
/*
* Lucent WaveLAN/IEEE 802.11 PCMCIA driver.
*
* Original FreeBSD driver written by Bill Paul <wpaul@ctr.columbia.edu>
* Electrical Engineering Department
* Columbia University, New York City
*/
/*
* The WaveLAN/IEEE adapter is the second generation of the WaveLAN
* from Lucent. Unlike the older cards, the new ones are programmed
* entirely via a firmware-driven controller called the Hermes.
* Unfortunately, Lucent will not release the Hermes programming manual
* without an NDA (if at all). What they do release is an API library
* called the HCF (Hardware Control Functions) which is supposed to
* do the device-specific operations of a device driver for you. The
* publically available version of the HCF library (the 'HCF Light') is
* a) extremely gross, b) lacks certain features, particularly support
* for 802.11 frames, and c) is contaminated by the GNU Public License.
*
* This driver does not use the HCF or HCF Light at all. Instead, it
* programs the Hermes controller directly, using information gleaned
* from the HCF Light code and corresponding documentation.
*
* This driver supports the ISA, PCMCIA and PCI versions of the Lucent
* WaveLan cards (based on the Hermes chipset), as well as the newer
* Prism 2 chipsets with firmware from Intersil and Symbol.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_wlan.h"
#define WI_HERMES_STATS_WAR /* Work around stats counter bug. */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/endian.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/random.h>
#include <sys/syslog.h>
#include <sys/sysctl.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <machine/atomic.h>
#include <sys/rman.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_llc.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_ioctl.h>
#include <net80211/ieee80211_radiotap.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>
#include <net/bpf.h>
#include <dev/wi/if_wavelan_ieee.h>
#include <dev/wi/if_wireg.h>
#include <dev/wi/if_wivar.h>
static struct ieee80211vap *wi_vap_create(struct ieee80211com *,
const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
const uint8_t [IEEE80211_ADDR_LEN],
const uint8_t [IEEE80211_ADDR_LEN]);
static void wi_vap_delete(struct ieee80211vap *vap);
static void wi_stop_locked(struct wi_softc *sc, int disable);
static void wi_start_locked(struct ifnet *);
static void wi_start(struct ifnet *);
static int wi_start_tx(struct ifnet *ifp, struct wi_frame *frmhdr,
struct mbuf *m0);
static int wi_raw_xmit(struct ieee80211_node *, struct mbuf *,
const struct ieee80211_bpf_params *);
static int wi_newstate_sta(struct ieee80211vap *, enum ieee80211_state, int);
static int wi_newstate_hostap(struct ieee80211vap *, enum ieee80211_state,
int);
static void wi_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m,
int subtype, int rssi, int nf);
static int wi_reset(struct wi_softc *);
static void wi_watchdog(void *);
static int wi_ioctl(struct ifnet *, u_long, caddr_t);
static void wi_media_status(struct ifnet *, struct ifmediareq *);
static void wi_rx_intr(struct wi_softc *);
static void wi_tx_intr(struct wi_softc *);
static void wi_tx_ex_intr(struct wi_softc *);
static void wi_info_intr(struct wi_softc *);
static int wi_write_txrate(struct wi_softc *, struct ieee80211vap *);
static int wi_write_wep(struct wi_softc *, struct ieee80211vap *);
static int wi_write_multi(struct wi_softc *);
static void wi_update_mcast(struct ifnet *);
static void wi_update_promisc(struct ifnet *);
static int wi_alloc_fid(struct wi_softc *, int, int *);
static void wi_read_nicid(struct wi_softc *);
static int wi_write_ssid(struct wi_softc *, int, u_int8_t *, int);
static int wi_cmd(struct wi_softc *, int, int, int, int);
static int wi_seek_bap(struct wi_softc *, int, int);
static int wi_read_bap(struct wi_softc *, int, int, void *, int);
static int wi_write_bap(struct wi_softc *, int, int, void *, int);
static int wi_mwrite_bap(struct wi_softc *, int, int, struct mbuf *, int);
static int wi_read_rid(struct wi_softc *, int, void *, int *);
static int wi_write_rid(struct wi_softc *, int, void *, int);
static int wi_write_appie(struct wi_softc *, int, const struct ieee80211_appie *);
static void wi_scan_start(struct ieee80211com *);
static void wi_scan_end(struct ieee80211com *);
static void wi_set_channel(struct ieee80211com *);
static __inline int
wi_write_val(struct wi_softc *sc, int rid, u_int16_t val)
{
val = htole16(val);
return wi_write_rid(sc, rid, &val, sizeof(val));
}
static SYSCTL_NODE(_hw, OID_AUTO, wi, CTLFLAG_RD, 0,
"Wireless driver parameters");
static struct timeval lasttxerror; /* time of last tx error msg */
static int curtxeps; /* current tx error msgs/sec */
static int wi_txerate = 0; /* tx error rate: max msgs/sec */
SYSCTL_INT(_hw_wi, OID_AUTO, txerate, CTLFLAG_RW, &wi_txerate,
0, "max tx error msgs/sec; 0 to disable msgs");
#define WI_DEBUG
#ifdef WI_DEBUG
static int wi_debug = 0;
SYSCTL_INT(_hw_wi, OID_AUTO, debug, CTLFLAG_RW, &wi_debug,
0, "control debugging printfs");
#define DPRINTF(X) if (wi_debug) printf X
#else
#define DPRINTF(X)
#endif
#define WI_INTRS (WI_EV_RX | WI_EV_ALLOC | WI_EV_INFO)
struct wi_card_ident wi_card_ident[] = {
/* CARD_ID CARD_NAME FIRM_TYPE */
{ WI_NIC_LUCENT_ID, WI_NIC_LUCENT_STR, WI_LUCENT },
{ WI_NIC_SONY_ID, WI_NIC_SONY_STR, WI_LUCENT },
{ WI_NIC_LUCENT_EMB_ID, WI_NIC_LUCENT_EMB_STR, WI_LUCENT },
{ WI_NIC_EVB2_ID, WI_NIC_EVB2_STR, WI_INTERSIL },
{ WI_NIC_HWB3763_ID, WI_NIC_HWB3763_STR, WI_INTERSIL },
{ WI_NIC_HWB3163_ID, WI_NIC_HWB3163_STR, WI_INTERSIL },
{ WI_NIC_HWB3163B_ID, WI_NIC_HWB3163B_STR, WI_INTERSIL },
{ WI_NIC_EVB3_ID, WI_NIC_EVB3_STR, WI_INTERSIL },
{ WI_NIC_HWB1153_ID, WI_NIC_HWB1153_STR, WI_INTERSIL },
{ WI_NIC_P2_SST_ID, WI_NIC_P2_SST_STR, WI_INTERSIL },
{ WI_NIC_EVB2_SST_ID, WI_NIC_EVB2_SST_STR, WI_INTERSIL },
{ WI_NIC_3842_EVA_ID, WI_NIC_3842_EVA_STR, WI_INTERSIL },
{ WI_NIC_3842_PCMCIA_AMD_ID, WI_NIC_3842_PCMCIA_STR, WI_INTERSIL },
{ WI_NIC_3842_PCMCIA_SST_ID, WI_NIC_3842_PCMCIA_STR, WI_INTERSIL },
{ WI_NIC_3842_PCMCIA_ATL_ID, WI_NIC_3842_PCMCIA_STR, WI_INTERSIL },
{ WI_NIC_3842_PCMCIA_ATS_ID, WI_NIC_3842_PCMCIA_STR, WI_INTERSIL },
{ WI_NIC_3842_MINI_AMD_ID, WI_NIC_3842_MINI_STR, WI_INTERSIL },
{ WI_NIC_3842_MINI_SST_ID, WI_NIC_3842_MINI_STR, WI_INTERSIL },
{ WI_NIC_3842_MINI_ATL_ID, WI_NIC_3842_MINI_STR, WI_INTERSIL },
{ WI_NIC_3842_MINI_ATS_ID, WI_NIC_3842_MINI_STR, WI_INTERSIL },
{ WI_NIC_3842_PCI_AMD_ID, WI_NIC_3842_PCI_STR, WI_INTERSIL },
{ WI_NIC_3842_PCI_SST_ID, WI_NIC_3842_PCI_STR, WI_INTERSIL },
{ WI_NIC_3842_PCI_ATS_ID, WI_NIC_3842_PCI_STR, WI_INTERSIL },
{ WI_NIC_3842_PCI_ATL_ID, WI_NIC_3842_PCI_STR, WI_INTERSIL },
{ WI_NIC_P3_PCMCIA_AMD_ID, WI_NIC_P3_PCMCIA_STR, WI_INTERSIL },
{ WI_NIC_P3_PCMCIA_SST_ID, WI_NIC_P3_PCMCIA_STR, WI_INTERSIL },
{ WI_NIC_P3_PCMCIA_ATL_ID, WI_NIC_P3_PCMCIA_STR, WI_INTERSIL },
{ WI_NIC_P3_PCMCIA_ATS_ID, WI_NIC_P3_PCMCIA_STR, WI_INTERSIL },
{ WI_NIC_P3_MINI_AMD_ID, WI_NIC_P3_MINI_STR, WI_INTERSIL },
{ WI_NIC_P3_MINI_SST_ID, WI_NIC_P3_MINI_STR, WI_INTERSIL },
{ WI_NIC_P3_MINI_ATL_ID, WI_NIC_P3_MINI_STR, WI_INTERSIL },
{ WI_NIC_P3_MINI_ATS_ID, WI_NIC_P3_MINI_STR, WI_INTERSIL },
{ 0, NULL, 0 },
};
static char *wi_firmware_names[] = { "none", "Hermes", "Intersil", "Symbol" };
devclass_t wi_devclass;
int
wi_attach(device_t dev)
{
struct wi_softc *sc = device_get_softc(dev);
struct ieee80211com *ic;
struct ifnet *ifp;
int i, nrates, buflen;
u_int16_t val;
u_int8_t ratebuf[2 + IEEE80211_RATE_SIZE];
struct ieee80211_rateset *rs;
struct sysctl_ctx_list *sctx;
struct sysctl_oid *soid;
static const u_int8_t empty_macaddr[IEEE80211_ADDR_LEN] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
int error;
uint8_t macaddr[IEEE80211_ADDR_LEN];
ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
if (ifp == NULL) {
device_printf(dev, "can not if_alloc\n");
wi_free(dev);
return ENOSPC;
}
ic = ifp->if_l2com;
sc->sc_firmware_type = WI_NOTYPE;
sc->wi_cmd_count = 500;
/* Reset the NIC. */
if (wi_reset(sc) != 0) {
wi_free(dev);
return ENXIO; /* XXX */
}
/* Read NIC identification */
wi_read_nicid(sc);
switch (sc->sc_firmware_type) {
case WI_LUCENT:
if (sc->sc_sta_firmware_ver < 60006)
goto reject;
break;
case WI_INTERSIL:
if (sc->sc_sta_firmware_ver < 800)
goto reject;
break;
default:
reject:
device_printf(dev, "Sorry, this card is not supported "
"(type %d, firmware ver %d)\n",
sc->sc_firmware_type, sc->sc_sta_firmware_ver);
wi_free(dev);
return EOPNOTSUPP;
}
/* Export info about the device via sysctl */
sctx = device_get_sysctl_ctx(dev);
soid = device_get_sysctl_tree(dev);
SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(soid), OID_AUTO,
"firmware_type", CTLFLAG_RD,
wi_firmware_names[sc->sc_firmware_type], 0,
"Firmware type string");
SYSCTL_ADD_INT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "sta_version",
CTLFLAG_RD, &sc->sc_sta_firmware_ver, 0,
"Station Firmware version");
if (sc->sc_firmware_type == WI_INTERSIL)
SYSCTL_ADD_INT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO,
"pri_version", CTLFLAG_RD, &sc->sc_pri_firmware_ver, 0,
"Primary Firmware version");
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "nic_id",
CTLFLAG_RD, &sc->sc_nic_id, 0, "NIC id");
SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "nic_name",
CTLFLAG_RD, sc->sc_nic_name, 0, "NIC name");
mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
MTX_DEF | MTX_RECURSE);
callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0);
/*
* Read the station address.
* And do it twice. I've seen PRISM-based cards that return
* an error when trying to read it the first time, which causes
* the probe to fail.
*/
buflen = IEEE80211_ADDR_LEN;
error = wi_read_rid(sc, WI_RID_MAC_NODE, macaddr, &buflen);
if (error != 0) {
buflen = IEEE80211_ADDR_LEN;
error = wi_read_rid(sc, WI_RID_MAC_NODE, macaddr, &buflen);
}
if (error || IEEE80211_ADDR_EQ(macaddr, empty_macaddr)) {
if (error != 0)
device_printf(dev, "mac read failed %d\n", error);
else {
device_printf(dev, "mac read failed (all zeros)\n");
error = ENXIO;
}
wi_free(dev);
return (error);
}
ifp->if_softc = sc;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = wi_ioctl;
ifp->if_start = wi_start;
ifp->if_init = wi_init;
IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
IFQ_SET_READY(&ifp->if_snd);
ic->ic_ifp = ifp;
ic->ic_phytype = IEEE80211_T_DS;
ic->ic_opmode = IEEE80211_M_STA;
ic->ic_caps = IEEE80211_C_STA
| IEEE80211_C_PMGT
| IEEE80211_C_MONITOR
;
/*
* Query the card for available channels and setup the
* channel table. We assume these are all 11b channels.
*/
buflen = sizeof(val);
if (wi_read_rid(sc, WI_RID_CHANNEL_LIST, &val, &buflen) != 0)
val = htole16(0x1fff); /* assume 1-11 */
KASSERT(val != 0, ("wi_attach: no available channels listed!"));
val <<= 1; /* shift for base 1 indices */
for (i = 1; i < 16; i++) {
struct ieee80211_channel *c;
if (!isset((u_int8_t*)&val, i))
continue;
c = &ic->ic_channels[ic->ic_nchans++];
c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_B);
c->ic_flags = IEEE80211_CHAN_B;
c->ic_ieee = i;
/* XXX txpowers? */
}
/*
* Set flags based on firmware version.
*/
switch (sc->sc_firmware_type) {
case WI_LUCENT:
sc->sc_ntxbuf = 1;
ic->ic_caps |= IEEE80211_C_IBSS;
sc->sc_ibss_port = WI_PORTTYPE_BSS;
sc->sc_monitor_port = WI_PORTTYPE_ADHOC;
sc->sc_min_rssi = WI_LUCENT_MIN_RSSI;
sc->sc_max_rssi = WI_LUCENT_MAX_RSSI;
sc->sc_dbm_offset = WI_LUCENT_DBM_OFFSET;
break;
case WI_INTERSIL:
sc->sc_ntxbuf = WI_NTXBUF;
sc->sc_flags |= WI_FLAGS_HAS_FRAGTHR
| WI_FLAGS_HAS_ROAMING;
/*
* Old firmware are slow, so give peace a chance.
*/
if (sc->sc_sta_firmware_ver < 10000)
sc->wi_cmd_count = 5000;
if (sc->sc_sta_firmware_ver > 10101)
sc->sc_flags |= WI_FLAGS_HAS_DBMADJUST;
ic->ic_caps |= IEEE80211_C_IBSS;
/*
* version 0.8.3 and newer are the only ones that are known
* to currently work. Earlier versions can be made to work,
* at least according to the Linux driver but we require
* monitor mode so this is irrelevant.
*/
ic->ic_caps |= IEEE80211_C_HOSTAP;
if (sc->sc_sta_firmware_ver >= 10603)
sc->sc_flags |= WI_FLAGS_HAS_ENHSECURITY;
if (sc->sc_sta_firmware_ver >= 10700) {
/*
* 1.7.0+ have the necessary support for sta mode WPA.
*/
sc->sc_flags |= WI_FLAGS_HAS_WPASUPPORT;
ic->ic_caps |= IEEE80211_C_WPA;
}
sc->sc_ibss_port = WI_PORTTYPE_IBSS;
sc->sc_monitor_port = WI_PORTTYPE_APSILENT;
sc->sc_min_rssi = WI_PRISM_MIN_RSSI;
sc->sc_max_rssi = WI_PRISM_MAX_RSSI;
sc->sc_dbm_offset = WI_PRISM_DBM_OFFSET;
break;
}
/*
* Find out if we support WEP on this card.
*/
buflen = sizeof(val);
if (wi_read_rid(sc, WI_RID_WEP_AVAIL, &val, &buflen) == 0 &&
val != htole16(0))
ic->ic_cryptocaps |= IEEE80211_CRYPTO_WEP;
/* Find supported rates. */
buflen = sizeof(ratebuf);
rs = &ic->ic_sup_rates[IEEE80211_MODE_11B];
if (wi_read_rid(sc, WI_RID_DATA_RATES, ratebuf, &buflen) == 0) {
nrates = le16toh(*(u_int16_t *)ratebuf);
if (nrates > IEEE80211_RATE_MAXSIZE)
nrates = IEEE80211_RATE_MAXSIZE;
rs->rs_nrates = 0;
for (i = 0; i < nrates; i++)
if (ratebuf[2+i])
rs->rs_rates[rs->rs_nrates++] = ratebuf[2+i];
} else {
/* XXX fallback on error? */
}
buflen = sizeof(val);
if ((sc->sc_flags & WI_FLAGS_HAS_DBMADJUST) &&
wi_read_rid(sc, WI_RID_DBM_ADJUST, &val, &buflen) == 0) {
sc->sc_dbm_offset = le16toh(val);
}
sc->sc_portnum = WI_DEFAULT_PORT;
ieee80211_ifattach(ic, macaddr);
ic->ic_raw_xmit = wi_raw_xmit;
ic->ic_scan_start = wi_scan_start;
ic->ic_scan_end = wi_scan_end;
ic->ic_set_channel = wi_set_channel;
ic->ic_vap_create = wi_vap_create;
ic->ic_vap_delete = wi_vap_delete;
ic->ic_update_mcast = wi_update_mcast;
ic->ic_update_promisc = wi_update_promisc;
ieee80211_radiotap_attach(ic,
&sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
WI_TX_RADIOTAP_PRESENT,
&sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
WI_RX_RADIOTAP_PRESENT);
if (bootverbose)
ieee80211_announce(ic);
error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
NULL, wi_intr, sc, &sc->wi_intrhand);
if (error) {
device_printf(dev, "bus_setup_intr() failed! (%d)\n", error);
ieee80211_ifdetach(ic);
if_free(sc->sc_ifp);
wi_free(dev);
return error;
}
return (0);
}
int
wi_detach(device_t dev)
{
struct wi_softc *sc = device_get_softc(dev);
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
WI_LOCK(sc);
/* check if device was removed */
sc->wi_gone |= !bus_child_present(dev);
wi_stop_locked(sc, 0);
WI_UNLOCK(sc);
ieee80211_ifdetach(ic);
bus_teardown_intr(dev, sc->irq, sc->wi_intrhand);
if_free(sc->sc_ifp);
wi_free(dev);
mtx_destroy(&sc->sc_mtx);
return (0);
}
static struct ieee80211vap *
wi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
enum ieee80211_opmode opmode, int flags,
const uint8_t bssid[IEEE80211_ADDR_LEN],
const uint8_t mac[IEEE80211_ADDR_LEN])
{
struct wi_softc *sc = ic->ic_ifp->if_softc;
struct wi_vap *wvp;
struct ieee80211vap *vap;
if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
return NULL;
wvp = (struct wi_vap *) malloc(sizeof(struct wi_vap),
M_80211_VAP, M_NOWAIT | M_ZERO);
if (wvp == NULL)
return NULL;
vap = &wvp->wv_vap;
ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
vap->iv_max_aid = WI_MAX_AID;
switch (opmode) {
case IEEE80211_M_STA:
sc->sc_porttype = WI_PORTTYPE_BSS;
wvp->wv_newstate = vap->iv_newstate;
vap->iv_newstate = wi_newstate_sta;
/* need to filter mgt frames to avoid confusing state machine */
wvp->wv_recv_mgmt = vap->iv_recv_mgmt;
vap->iv_recv_mgmt = wi_recv_mgmt;
break;
case IEEE80211_M_IBSS:
sc->sc_porttype = sc->sc_ibss_port;
wvp->wv_newstate = vap->iv_newstate;
vap->iv_newstate = wi_newstate_sta;
break;
case IEEE80211_M_AHDEMO:
sc->sc_porttype = WI_PORTTYPE_ADHOC;
break;
case IEEE80211_M_HOSTAP:
sc->sc_porttype = WI_PORTTYPE_HOSTAP;
wvp->wv_newstate = vap->iv_newstate;
vap->iv_newstate = wi_newstate_hostap;
break;
case IEEE80211_M_MONITOR:
sc->sc_porttype = sc->sc_monitor_port;
break;
default:
break;
}
/* complete setup */
ieee80211_vap_attach(vap, ieee80211_media_change, wi_media_status);
ic->ic_opmode = opmode;
return vap;
}
static void
wi_vap_delete(struct ieee80211vap *vap)
{
struct wi_vap *wvp = WI_VAP(vap);
ieee80211_vap_detach(vap);
free(wvp, M_80211_VAP);
}
int
wi_shutdown(device_t dev)
{
struct wi_softc *sc = device_get_softc(dev);
wi_stop(sc, 1);
return (0);
}
void
wi_intr(void *arg)
{
struct wi_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
u_int16_t status;
WI_LOCK(sc);
if (sc->wi_gone || !sc->sc_enabled || (ifp->if_flags & IFF_UP) == 0) {
CSR_WRITE_2(sc, WI_INT_EN, 0);
CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF);
WI_UNLOCK(sc);
return;
}
/* Disable interrupts. */
CSR_WRITE_2(sc, WI_INT_EN, 0);
status = CSR_READ_2(sc, WI_EVENT_STAT);
if (status & WI_EV_RX)
wi_rx_intr(sc);
if (status & WI_EV_ALLOC)
wi_tx_intr(sc);
if (status & WI_EV_TX_EXC)
wi_tx_ex_intr(sc);
if (status & WI_EV_INFO)
wi_info_intr(sc);
if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
wi_start_locked(ifp);
/* Re-enable interrupts. */
CSR_WRITE_2(sc, WI_INT_EN, WI_INTRS);
WI_UNLOCK(sc);
return;
}
static void
wi_enable(struct wi_softc *sc)
{
/* Enable interrupts */
CSR_WRITE_2(sc, WI_INT_EN, WI_INTRS);
/* enable port */
wi_cmd(sc, WI_CMD_ENABLE | sc->sc_portnum, 0, 0, 0);
sc->sc_enabled = 1;
}
static int
wi_setup_locked(struct wi_softc *sc, int porttype, int mode,
uint8_t mac[IEEE80211_ADDR_LEN])
{
int i;
wi_reset(sc);
wi_write_val(sc, WI_RID_PORTTYPE, porttype);
wi_write_val(sc, WI_RID_CREATE_IBSS, mode);
wi_write_val(sc, WI_RID_MAX_DATALEN, 2304);
/* XXX IEEE80211_BPF_NOACK wants 0 */
wi_write_val(sc, WI_RID_ALT_RETRY_CNT, 2);
if (sc->sc_flags & WI_FLAGS_HAS_ROAMING)
wi_write_val(sc, WI_RID_ROAMING_MODE, 3); /* NB: disabled */
wi_write_rid(sc, WI_RID_MAC_NODE, mac, IEEE80211_ADDR_LEN);
/* Allocate fids for the card */
sc->sc_buflen = IEEE80211_MAX_LEN + sizeof(struct wi_frame);
for (i = 0; i < sc->sc_ntxbuf; i++) {
int error = wi_alloc_fid(sc, sc->sc_buflen,
&sc->sc_txd[i].d_fid);
if (error) {
device_printf(sc->sc_dev,
"tx buffer allocation failed (error %u)\n",
error);
return error;
}
sc->sc_txd[i].d_len = 0;
}
sc->sc_txcur = sc->sc_txnext = 0;
return 0;
}
static void
wi_init_locked(struct wi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
int wasenabled;
WI_LOCK_ASSERT(sc);
wasenabled = sc->sc_enabled;
if (wasenabled)
wi_stop_locked(sc, 1);
if (wi_setup_locked(sc, sc->sc_porttype, 3, IF_LLADDR(ifp)) != 0) {
if_printf(ifp, "interface not running\n");
wi_stop_locked(sc, 1);
return;
}
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
callout_reset(&sc->sc_watchdog, hz, wi_watchdog, sc);
wi_enable(sc); /* Enable desired port */
}
void
wi_init(void *arg)
{
struct wi_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
WI_LOCK(sc);
wi_init_locked(sc);
WI_UNLOCK(sc);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
ieee80211_start_all(ic); /* start all vap's */
}
static void
wi_stop_locked(struct wi_softc *sc, int disable)
{
struct ifnet *ifp = sc->sc_ifp;
WI_LOCK_ASSERT(sc);
if (sc->sc_enabled && !sc->wi_gone) {
CSR_WRITE_2(sc, WI_INT_EN, 0);
wi_cmd(sc, WI_CMD_DISABLE | sc->sc_portnum, 0, 0, 0);
if (disable)
sc->sc_enabled = 0;
} else if (sc->wi_gone && disable) /* gone --> not enabled */
sc->sc_enabled = 0;
callout_stop(&sc->sc_watchdog);
sc->sc_tx_timer = 0;
sc->sc_false_syns = 0;
ifp->if_drv_flags &= ~(IFF_DRV_OACTIVE | IFF_DRV_RUNNING);
}
void
wi_stop(struct wi_softc *sc, int disable)
{
WI_LOCK(sc);
wi_stop_locked(sc, disable);
WI_UNLOCK(sc);
}
static void
wi_set_channel(struct ieee80211com *ic)
{
struct ifnet *ifp = ic->ic_ifp;
struct wi_softc *sc = ifp->if_softc;
DPRINTF(("%s: channel %d, %sscanning\n", __func__,
ieee80211_chan2ieee(ic, ic->ic_curchan),
ic->ic_flags & IEEE80211_F_SCAN ? "" : "!"));
WI_LOCK(sc);
wi_write_val(sc, WI_RID_OWN_CHNL,
ieee80211_chan2ieee(ic, ic->ic_curchan));
WI_UNLOCK(sc);
}
static void
wi_scan_start(struct ieee80211com *ic)
{
struct ifnet *ifp = ic->ic_ifp;
struct wi_softc *sc = ifp->if_softc;
struct ieee80211_scan_state *ss = ic->ic_scan;
DPRINTF(("%s\n", __func__));
WI_LOCK(sc);
/*
* Switch device to monitor mode.
*/
wi_write_val(sc, WI_RID_PORTTYPE, sc->sc_monitor_port);
if (sc->sc_firmware_type == WI_INTERSIL) {
wi_cmd(sc, WI_CMD_DISABLE | WI_PORT0, 0, 0, 0);
wi_cmd(sc, WI_CMD_ENABLE | WI_PORT0, 0, 0, 0);
}
/* force full dwell time to compensate for firmware overhead */
ss->ss_mindwell = ss->ss_maxdwell = msecs_to_ticks(400);
WI_UNLOCK(sc);
}
static void
wi_scan_end(struct ieee80211com *ic)
{
struct ifnet *ifp = ic->ic_ifp;
struct wi_softc *sc = ifp->if_softc;
DPRINTF(("%s: restore port type %d\n", __func__, sc->sc_porttype));
WI_LOCK(sc);
wi_write_val(sc, WI_RID_PORTTYPE, sc->sc_porttype);
if (sc->sc_firmware_type == WI_INTERSIL) {
wi_cmd(sc, WI_CMD_DISABLE | WI_PORT0, 0, 0, 0);
wi_cmd(sc, WI_CMD_ENABLE | WI_PORT0, 0, 0, 0);
}
WI_UNLOCK(sc);
}
static void
wi_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m,
int subtype, int rssi, int nf)
{
struct ieee80211vap *vap = ni->ni_vap;
switch (subtype) {
case IEEE80211_FC0_SUBTYPE_AUTH:
case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
/* NB: filter frames that trigger state changes */
return;
}
WI_VAP(vap)->wv_recv_mgmt(ni, m, subtype, rssi, nf);
}
static int
wi_newstate_sta(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct ieee80211com *ic = vap->iv_ic;
struct ifnet *ifp = ic->ic_ifp;
struct ieee80211_node *bss;
struct wi_softc *sc = ifp->if_softc;
DPRINTF(("%s: %s -> %s\n", __func__,
ieee80211_state_name[vap->iv_state],
ieee80211_state_name[nstate]));
if (nstate == IEEE80211_S_AUTH) {
WI_LOCK(sc);
wi_setup_locked(sc, WI_PORTTYPE_BSS, 3, vap->iv_myaddr);
if (vap->iv_flags & IEEE80211_F_PMGTON) {
wi_write_val(sc, WI_RID_MAX_SLEEP, ic->ic_lintval);
wi_write_val(sc, WI_RID_PM_ENABLED, 1);
}
wi_write_val(sc, WI_RID_RTS_THRESH, vap->iv_rtsthreshold);
if (sc->sc_flags & WI_FLAGS_HAS_FRAGTHR)
wi_write_val(sc, WI_RID_FRAG_THRESH,
vap->iv_fragthreshold);
wi_write_txrate(sc, vap);
bss = vap->iv_bss;
wi_write_ssid(sc, WI_RID_DESIRED_SSID, bss->ni_essid, bss->ni_esslen);
wi_write_val(sc, WI_RID_OWN_CHNL,
ieee80211_chan2ieee(ic, bss->ni_chan));
/* Configure WEP. */
if (ic->ic_cryptocaps & IEEE80211_CRYPTO_WEP)
wi_write_wep(sc, vap);
else
sc->sc_encryption = 0;
if ((sc->sc_flags & WI_FLAGS_HAS_WPASUPPORT) &&
(vap->iv_flags & IEEE80211_F_WPA)) {
wi_write_val(sc, WI_RID_WPA_HANDLING, 1);
if (vap->iv_appie_wpa != NULL)
wi_write_appie(sc, WI_RID_WPA_DATA,
vap->iv_appie_wpa);
}
wi_enable(sc); /* enable port */
/* Lucent firmware does not support the JOIN RID. */
if (sc->sc_firmware_type == WI_INTERSIL) {
struct wi_joinreq join;
memset(&join, 0, sizeof(join));
IEEE80211_ADDR_COPY(&join.wi_bssid, bss->ni_bssid);
join.wi_chan = htole16(
ieee80211_chan2ieee(ic, bss->ni_chan));
wi_write_rid(sc, WI_RID_JOIN_REQ, &join, sizeof(join));
}
WI_UNLOCK(sc);
/*
* NB: don't go through 802.11 layer, it'll send auth frame;
* instead we drive the state machine from the link status
* notification we get on association.
*/
vap->iv_state = nstate;
return (0);
}
return WI_VAP(vap)->wv_newstate(vap, nstate, arg);
}
static int
wi_newstate_hostap(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct ieee80211com *ic = vap->iv_ic;
struct ifnet *ifp = ic->ic_ifp;
struct ieee80211_node *bss;
struct wi_softc *sc = ifp->if_softc;
int error;
DPRINTF(("%s: %s -> %s\n", __func__,
ieee80211_state_name[vap->iv_state],
ieee80211_state_name[nstate]));
error = WI_VAP(vap)->wv_newstate(vap, nstate, arg);
if (error == 0 && nstate == IEEE80211_S_RUN) {
WI_LOCK(sc);
wi_setup_locked(sc, WI_PORTTYPE_HOSTAP, 0, vap->iv_myaddr);
bss = vap->iv_bss;
wi_write_ssid(sc, WI_RID_OWN_SSID,
bss->ni_essid, bss->ni_esslen);
wi_write_val(sc, WI_RID_OWN_CHNL,
ieee80211_chan2ieee(ic, bss->ni_chan));
wi_write_val(sc, WI_RID_BASIC_RATE, 0x3);
wi_write_val(sc, WI_RID_SUPPORT_RATE, 0xf);
wi_write_txrate(sc, vap);
wi_write_val(sc, WI_RID_OWN_BEACON_INT, bss->ni_intval);
wi_write_val(sc, WI_RID_DTIM_PERIOD, vap->iv_dtim_period);
wi_write_val(sc, WI_RID_RTS_THRESH, vap->iv_rtsthreshold);
if (sc->sc_flags & WI_FLAGS_HAS_FRAGTHR)
wi_write_val(sc, WI_RID_FRAG_THRESH,
vap->iv_fragthreshold);
if ((sc->sc_flags & WI_FLAGS_HAS_ENHSECURITY) &&
(vap->iv_flags & IEEE80211_F_HIDESSID)) {
/*
* bit 0 means hide SSID in beacons,
* bit 1 means don't respond to bcast probe req
*/
wi_write_val(sc, WI_RID_ENH_SECURITY, 0x3);
}
if ((sc->sc_flags & WI_FLAGS_HAS_WPASUPPORT) &&
(vap->iv_flags & IEEE80211_F_WPA) &&
vap->iv_appie_wpa != NULL)
wi_write_appie(sc, WI_RID_WPA_DATA, vap->iv_appie_wpa);
wi_write_val(sc, WI_RID_PROMISC, 0);
/* Configure WEP. */
if (ic->ic_cryptocaps & IEEE80211_CRYPTO_WEP)
wi_write_wep(sc, vap);
else
sc->sc_encryption = 0;
wi_enable(sc); /* enable port */
WI_UNLOCK(sc);
}
return error;
}
static void
wi_start_locked(struct ifnet *ifp)
{
struct wi_softc *sc = ifp->if_softc;
struct ieee80211_node *ni;
struct ieee80211_frame *wh;
struct mbuf *m0;
struct ieee80211_key *k;
struct wi_frame frmhdr;
const struct llc *llc;
int cur;
WI_LOCK_ASSERT(sc);
if (sc->wi_gone)
return;
memset(&frmhdr, 0, sizeof(frmhdr));
cur = sc->sc_txnext;
for (;;) {
IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
if (m0 == NULL)
break;
if (sc->sc_txd[cur].d_len != 0) {
IFQ_DRV_PREPEND(&ifp->if_snd, m0);
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
break;
}
ni = (struct ieee80211_node *) m0->m_pkthdr.rcvif;
/* reconstruct 802.3 header */
wh = mtod(m0, struct ieee80211_frame *);
switch (wh->i_fc[1]) {
case IEEE80211_FC1_DIR_TODS:
IEEE80211_ADDR_COPY(frmhdr.wi_ehdr.ether_shost,
wh->i_addr2);
IEEE80211_ADDR_COPY(frmhdr.wi_ehdr.ether_dhost,
wh->i_addr3);
break;
case IEEE80211_FC1_DIR_NODS:
IEEE80211_ADDR_COPY(frmhdr.wi_ehdr.ether_shost,
wh->i_addr2);
IEEE80211_ADDR_COPY(frmhdr.wi_ehdr.ether_dhost,
wh->i_addr1);
break;
case IEEE80211_FC1_DIR_FROMDS:
IEEE80211_ADDR_COPY(frmhdr.wi_ehdr.ether_shost,
wh->i_addr3);
IEEE80211_ADDR_COPY(frmhdr.wi_ehdr.ether_dhost,
wh->i_addr1);
break;
}
llc = (const struct llc *)(
mtod(m0, const uint8_t *) + ieee80211_hdrsize(wh));
frmhdr.wi_ehdr.ether_type = llc->llc_snap.ether_type;
frmhdr.wi_tx_ctl = htole16(WI_ENC_TX_802_11|WI_TXCNTL_TX_EX);
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
k = ieee80211_crypto_encap(ni, m0);
if (k == NULL) {
ieee80211_free_node(ni);
m_freem(m0);
continue;
}
frmhdr.wi_tx_ctl |= htole16(WI_TXCNTL_NOCRYPT);
}
if (ieee80211_radiotap_active_vap(ni->ni_vap)) {
sc->sc_tx_th.wt_rate = ni->ni_txrate;
ieee80211_radiotap_tx(ni->ni_vap, m0);
}
m_copydata(m0, 0, sizeof(struct ieee80211_frame),
(caddr_t)&frmhdr.wi_whdr);
m_adj(m0, sizeof(struct ieee80211_frame));
frmhdr.wi_dat_len = htole16(m0->m_pkthdr.len);
ieee80211_free_node(ni);
if (wi_start_tx(ifp, &frmhdr, m0))
continue;
sc->sc_txnext = cur = (cur + 1) % sc->sc_ntxbuf;
ifp->if_opackets++;
}
}
static void
wi_start(struct ifnet *ifp)
{
struct wi_softc *sc = ifp->if_softc;
WI_LOCK(sc);
wi_start_locked(ifp);
WI_UNLOCK(sc);
}
static int
wi_start_tx(struct ifnet *ifp, struct wi_frame *frmhdr, struct mbuf *m0)
{
struct wi_softc *sc = ifp->if_softc;
int cur = sc->sc_txnext;
int fid, off, error;
fid = sc->sc_txd[cur].d_fid;
off = sizeof(*frmhdr);
error = wi_write_bap(sc, fid, 0, frmhdr, sizeof(*frmhdr)) != 0
|| wi_mwrite_bap(sc, fid, off, m0, m0->m_pkthdr.len) != 0;
m_freem(m0);
if (error) {
ifp->if_oerrors++;
return -1;
}
sc->sc_txd[cur].d_len = off;
if (sc->sc_txcur == cur) {
if (wi_cmd(sc, WI_CMD_TX | WI_RECLAIM, fid, 0, 0)) {
if_printf(ifp, "xmit failed\n");
sc->sc_txd[cur].d_len = 0;
return -1;
}
sc->sc_tx_timer = 5;
}
return 0;
}
static int
wi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m0,
const struct ieee80211_bpf_params *params)
{
struct ieee80211com *ic = ni->ni_ic;
struct ifnet *ifp = ic->ic_ifp;
struct ieee80211vap *vap = ni->ni_vap;
struct wi_softc *sc = ifp->if_softc;
struct ieee80211_key *k;
struct ieee80211_frame *wh;
struct wi_frame frmhdr;
int cur;
int rc = 0;
WI_LOCK(sc);
if (sc->wi_gone) {
rc = ENETDOWN;
goto out;
}
memset(&frmhdr, 0, sizeof(frmhdr));
cur = sc->sc_txnext;
if (sc->sc_txd[cur].d_len != 0) {
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
rc = ENOBUFS;
goto out;
}
m0->m_pkthdr.rcvif = NULL;
m_copydata(m0, 4, ETHER_ADDR_LEN * 2,
(caddr_t)&frmhdr.wi_ehdr);
frmhdr.wi_ehdr.ether_type = 0;
wh = mtod(m0, struct ieee80211_frame *);
frmhdr.wi_tx_ctl = htole16(WI_ENC_TX_802_11|WI_TXCNTL_TX_EX);
if (params && (params->ibp_flags & IEEE80211_BPF_NOACK))
frmhdr.wi_tx_ctl |= htole16(WI_TXCNTL_ALTRTRY);
if ((wh->i_fc[1] & IEEE80211_FC1_WEP) &&
(!params || (params && (params->ibp_flags & IEEE80211_BPF_CRYPTO)))) {
k = ieee80211_crypto_encap(ni, m0);
if (k == NULL) {
rc = ENOMEM;
goto out;
}
frmhdr.wi_tx_ctl |= htole16(WI_TXCNTL_NOCRYPT);
}
if (ieee80211_radiotap_active_vap(vap)) {
sc->sc_tx_th.wt_rate = ni->ni_txrate;
ieee80211_radiotap_tx(vap, m0);
}
m_copydata(m0, 0, sizeof(struct ieee80211_frame),
(caddr_t)&frmhdr.wi_whdr);
m_adj(m0, sizeof(struct ieee80211_frame));
frmhdr.wi_dat_len = htole16(m0->m_pkthdr.len);
if (wi_start_tx(ifp, &frmhdr, m0) < 0) {
m0 = NULL;
rc = EIO;
goto out;
}
m0 = NULL;
sc->sc_txnext = cur = (cur + 1) % sc->sc_ntxbuf;
out:
WI_UNLOCK(sc);
if (m0 != NULL)
m_freem(m0);
ieee80211_free_node(ni);
return rc;
}
static int
wi_reset(struct wi_softc *sc)
{
#define WI_INIT_TRIES 3
int i, error = 0;
for (i = 0; i < WI_INIT_TRIES; i++) {
error = wi_cmd(sc, WI_CMD_INI, 0, 0, 0);
if (error == 0)
break;
DELAY(WI_DELAY * 1000);
}
sc->sc_reset = 1;
if (i == WI_INIT_TRIES) {
if_printf(sc->sc_ifp, "reset failed\n");
return error;
}
CSR_WRITE_2(sc, WI_INT_EN, 0);
CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF);
/* Calibrate timer. */
wi_write_val(sc, WI_RID_TICK_TIME, 8);
return 0;
#undef WI_INIT_TRIES
}
static void
wi_watchdog(void *arg)
{
struct wi_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
WI_LOCK_ASSERT(sc);
if (!sc->sc_enabled)
return;
if (sc->sc_tx_timer && --sc->sc_tx_timer == 0) {
if_printf(ifp, "device timeout\n");
ifp->if_oerrors++;
wi_init_locked(ifp->if_softc);
return;
}
callout_reset(&sc->sc_watchdog, hz, wi_watchdog, sc);
}
static int
wi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct wi_softc *sc = ifp->if_softc;
struct ieee80211com *ic = ifp->if_l2com;
struct ifreq *ifr = (struct ifreq *) data;
int error = 0, startall = 0;
switch (cmd) {
case SIOCSIFFLAGS:
WI_LOCK(sc);
/*
* Can't do promisc and hostap at the same time. If all that's
* changing is the promisc flag, try to short-circuit a call to
* wi_init() by just setting PROMISC in the hardware.
*/
if (ifp->if_flags & IFF_UP) {
if (ic->ic_opmode != IEEE80211_M_HOSTAP &&
ifp->if_drv_flags & IFF_DRV_RUNNING) {
if ((ifp->if_flags ^ sc->sc_if_flags) & IFF_PROMISC) {
wi_write_val(sc, WI_RID_PROMISC,
(ifp->if_flags & IFF_PROMISC) != 0);
} else {
wi_init_locked(sc);
startall = 1;
}
} else {
wi_init_locked(sc);
startall = 1;
}
} else {
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
wi_stop_locked(sc, 1);
sc->wi_gone = 0;
}
sc->sc_if_flags = ifp->if_flags;
WI_UNLOCK(sc);
if (startall)
ieee80211_start_all(ic);
break;
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
break;
case SIOCGIFADDR:
error = ether_ioctl(ifp, cmd, data);
break;
default:
error = EINVAL;
break;
}
return error;
}
static void
wi_media_status(struct ifnet *ifp, struct ifmediareq *imr)
{
struct ieee80211vap *vap = ifp->if_softc;
struct ieee80211com *ic = vap->iv_ic;
struct wi_softc *sc = ic->ic_ifp->if_softc;
u_int16_t val;
int rate, len;
len = sizeof(val);
if (sc->sc_enabled &&
wi_read_rid(sc, WI_RID_CUR_TX_RATE, &val, &len) == 0 &&
len == sizeof(val)) {
/* convert to 802.11 rate */
val = le16toh(val);
rate = val * 2;
if (sc->sc_firmware_type == WI_LUCENT) {
if (rate == 10)
rate = 11; /* 5.5Mbps */
} else {
if (rate == 4*2)
rate = 11; /* 5.5Mbps */
else if (rate == 8*2)
rate = 22; /* 11Mbps */
}
vap->iv_bss->ni_txrate = rate;
}
ieee80211_media_status(ifp, imr);
}
static void
wi_sync_bssid(struct wi_softc *sc, u_int8_t new_bssid[IEEE80211_ADDR_LEN])
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
struct ieee80211_node *ni = vap->iv_bss;
if (IEEE80211_ADDR_EQ(new_bssid, ni->ni_bssid))
return;
DPRINTF(("wi_sync_bssid: bssid %s -> ", ether_sprintf(ni->ni_bssid)));
DPRINTF(("%s ?\n", ether_sprintf(new_bssid)));
/* In promiscuous mode, the BSSID field is not a reliable
* indicator of the firmware's BSSID. Damp spurious
* change-of-BSSID indications.
*/
if ((ifp->if_flags & IFF_PROMISC) != 0 &&
!ppsratecheck(&sc->sc_last_syn, &sc->sc_false_syns,
WI_MAX_FALSE_SYNS))
return;
sc->sc_false_syns = MAX(0, sc->sc_false_syns - 1);
#if 0
/*
* XXX hack; we should create a new node with the new bssid
* and replace the existing ic_bss with it but since we don't
* process management frames to collect state we cheat by
* reusing the existing node as we know wi_newstate will be
* called and it will overwrite the node state.
*/
ieee80211_sta_join(ic, ieee80211_ref_node(ni));
#endif
}
static __noinline void
wi_rx_intr(struct wi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct wi_frame frmhdr;
struct mbuf *m;
struct ieee80211_frame *wh;
struct ieee80211_node *ni;
int fid, len, off;
u_int8_t dir;
u_int16_t status;
int8_t rssi, nf;
fid = CSR_READ_2(sc, WI_RX_FID);
/* First read in the frame header */
if (wi_read_bap(sc, fid, 0, &frmhdr, sizeof(frmhdr))) {
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_RX);
ifp->if_ierrors++;
DPRINTF(("wi_rx_intr: read fid %x failed\n", fid));
return;
}
/*
* Drop undecryptable or packets with receive errors here
*/
status = le16toh(frmhdr.wi_status);
if (status & WI_STAT_ERRSTAT) {
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_RX);
ifp->if_ierrors++;
DPRINTF(("wi_rx_intr: fid %x error status %x\n", fid, status));
return;
}
len = le16toh(frmhdr.wi_dat_len);
off = ALIGN(sizeof(struct ieee80211_frame));
/*
* Sometimes the PRISM2.x returns bogusly large frames. Except
* in monitor mode, just throw them away.
*/
if (off + len > MCLBYTES) {
if (ic->ic_opmode != IEEE80211_M_MONITOR) {
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_RX);
ifp->if_ierrors++;
DPRINTF(("wi_rx_intr: oversized packet\n"));
return;
} else
len = 0;
}
if (off + len > MHLEN)
m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
else
m = m_gethdr(M_DONTWAIT, MT_DATA);
if (m == NULL) {
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_RX);
ifp->if_ierrors++;
DPRINTF(("wi_rx_intr: MGET failed\n"));
return;
}
m->m_data += off - sizeof(struct ieee80211_frame);
memcpy(m->m_data, &frmhdr.wi_whdr, sizeof(struct ieee80211_frame));
wi_read_bap(sc, fid, sizeof(frmhdr),
m->m_data + sizeof(struct ieee80211_frame), len);
m->m_pkthdr.len = m->m_len = sizeof(struct ieee80211_frame) + len;
m->m_pkthdr.rcvif = ifp;
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_RX);
rssi = frmhdr.wi_rx_signal;
nf = frmhdr.wi_rx_silence;
if (ieee80211_radiotap_active(ic)) {
struct wi_rx_radiotap_header *tap = &sc->sc_rx_th;
uint32_t rstamp;
rstamp = (le16toh(frmhdr.wi_rx_tstamp0) << 16) |
le16toh(frmhdr.wi_rx_tstamp1);
tap->wr_tsf = htole64((uint64_t)rstamp);
/* XXX replace divide by table */
tap->wr_rate = frmhdr.wi_rx_rate / 5;
tap->wr_flags = 0;
if (frmhdr.wi_status & WI_STAT_PCF)
tap->wr_flags |= IEEE80211_RADIOTAP_F_CFP;
if (m->m_flags & M_WEP)
tap->wr_flags |= IEEE80211_RADIOTAP_F_WEP;
tap->wr_antsignal = rssi;
tap->wr_antnoise = nf;
}
/* synchronize driver's BSSID with firmware's BSSID */
wh = mtod(m, struct ieee80211_frame *);
dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
if (ic->ic_opmode == IEEE80211_M_IBSS && dir == IEEE80211_FC1_DIR_NODS)
wi_sync_bssid(sc, wh->i_addr3);
WI_UNLOCK(sc);
ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
if (ni != NULL) {
(void) ieee80211_input(ni, m, rssi, nf);
ieee80211_free_node(ni);
} else
(void) ieee80211_input_all(ic, m, rssi, nf);
WI_LOCK(sc);
}
static __noinline void
wi_tx_ex_intr(struct wi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct wi_frame frmhdr;
int fid;
fid = CSR_READ_2(sc, WI_TX_CMP_FID);
/* Read in the frame header */
if (wi_read_bap(sc, fid, 0, &frmhdr, sizeof(frmhdr)) == 0) {
u_int16_t status = le16toh(frmhdr.wi_status);
/*
* Spontaneous station disconnects appear as xmit
* errors. Don't announce them and/or count them
* as an output error.
*/
if ((status & WI_TXSTAT_DISCONNECT) == 0) {
if (ppsratecheck(&lasttxerror, &curtxeps, wi_txerate)) {
if_printf(ifp, "tx failed");
if (status & WI_TXSTAT_RET_ERR)
printf(", retry limit exceeded");
if (status & WI_TXSTAT_AGED_ERR)
printf(", max transmit lifetime exceeded");
if (status & WI_TXSTAT_DISCONNECT)
printf(", port disconnected");
if (status & WI_TXSTAT_FORM_ERR)
printf(", invalid format (data len %u src %6D)",
le16toh(frmhdr.wi_dat_len),
frmhdr.wi_ehdr.ether_shost, ":");
if (status & ~0xf)
printf(", status=0x%x", status);
printf("\n");
}
ifp->if_oerrors++;
} else {
DPRINTF(("port disconnected\n"));
ifp->if_collisions++; /* XXX */
}
} else
DPRINTF(("wi_tx_ex_intr: read fid %x failed\n", fid));
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_TX_EXC);
}
static __noinline void
wi_tx_intr(struct wi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
int fid, cur;
if (sc->wi_gone)
return;
fid = CSR_READ_2(sc, WI_ALLOC_FID);
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_ALLOC);
cur = sc->sc_txcur;
if (sc->sc_txd[cur].d_fid != fid) {
if_printf(ifp, "bad alloc %x != %x, cur %d nxt %d\n",
fid, sc->sc_txd[cur].d_fid, cur, sc->sc_txnext);
return;
}
sc->sc_tx_timer = 0;
sc->sc_txd[cur].d_len = 0;
sc->sc_txcur = cur = (cur + 1) % sc->sc_ntxbuf;
if (sc->sc_txd[cur].d_len == 0)
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
else {
if (wi_cmd(sc, WI_CMD_TX | WI_RECLAIM, sc->sc_txd[cur].d_fid,
0, 0)) {
if_printf(ifp, "xmit failed\n");
sc->sc_txd[cur].d_len = 0;
} else {
sc->sc_tx_timer = 5;
}
}
}
static __noinline void
wi_info_intr(struct wi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
int i, fid, len, off;
u_int16_t ltbuf[2];
u_int16_t stat;
u_int32_t *ptr;
fid = CSR_READ_2(sc, WI_INFO_FID);
wi_read_bap(sc, fid, 0, ltbuf, sizeof(ltbuf));
switch (le16toh(ltbuf[1])) {
case WI_INFO_LINK_STAT:
wi_read_bap(sc, fid, sizeof(ltbuf), &stat, sizeof(stat));
DPRINTF(("wi_info_intr: LINK_STAT 0x%x\n", le16toh(stat)));
if (vap == NULL)
goto finish;
switch (le16toh(stat)) {
case WI_INFO_LINK_STAT_CONNECTED:
if (vap->iv_state == IEEE80211_S_RUN &&
vap->iv_opmode != IEEE80211_M_IBSS)
break;
/* fall thru... */
case WI_INFO_LINK_STAT_AP_CHG:
IEEE80211_LOCK(ic);
vap->iv_bss->ni_associd = 1 | 0xc000; /* NB: anything will do */
ieee80211_new_state(vap, IEEE80211_S_RUN, 0);
IEEE80211_UNLOCK(ic);
break;
case WI_INFO_LINK_STAT_AP_INR:
break;
case WI_INFO_LINK_STAT_DISCONNECTED:
/* we dropped off the net; e.g. due to deauth/disassoc */
IEEE80211_LOCK(ic);
vap->iv_bss->ni_associd = 0;
vap->iv_stats.is_rx_deauth++;
ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
IEEE80211_UNLOCK(ic);
break;
case WI_INFO_LINK_STAT_AP_OOR:
/* XXX does this need to be per-vap? */
ieee80211_beacon_miss(ic);
break;
case WI_INFO_LINK_STAT_ASSOC_FAILED:
if (vap->iv_opmode == IEEE80211_M_STA)
ieee80211_new_state(vap, IEEE80211_S_SCAN,
IEEE80211_SCAN_FAIL_TIMEOUT);
break;
}
break;
case WI_INFO_COUNTERS:
/* some card versions have a larger stats structure */
len = min(le16toh(ltbuf[0]) - 1, sizeof(sc->sc_stats) / 4);
ptr = (u_int32_t *)&sc->sc_stats;
off = sizeof(ltbuf);
for (i = 0; i < len; i++, off += 2, ptr++) {
wi_read_bap(sc, fid, off, &stat, sizeof(stat));
#ifdef WI_HERMES_STATS_WAR
if (stat & 0xf000)
stat = ~stat;
#endif
*ptr += stat;
}
ifp->if_collisions = sc->sc_stats.wi_tx_single_retries +
sc->sc_stats.wi_tx_multi_retries +
sc->sc_stats.wi_tx_retry_limit;
break;
default:
DPRINTF(("wi_info_intr: got fid %x type %x len %d\n", fid,
le16toh(ltbuf[1]), le16toh(ltbuf[0])));
break;
}
finish:
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_INFO);
}
static int
wi_write_multi(struct wi_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
int n;
struct ifmultiaddr *ifma;
struct wi_mcast mlist;
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
allmulti:
memset(&mlist, 0, sizeof(mlist));
return wi_write_rid(sc, WI_RID_MCAST_LIST, &mlist,
sizeof(mlist));
}
n = 0;
if_maddr_rlock(ifp);
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
if (n >= 16)
goto allmulti;
IEEE80211_ADDR_COPY(&mlist.wi_mcast[n],
(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)));
n++;
}
if_maddr_runlock(ifp);
return wi_write_rid(sc, WI_RID_MCAST_LIST, &mlist,
IEEE80211_ADDR_LEN * n);
}
static void
wi_update_mcast(struct ifnet *ifp)
{
wi_write_multi(ifp->if_softc);
}
static void
wi_update_promisc(struct ifnet *ifp)
{
struct wi_softc *sc = ifp->if_softc;
struct ieee80211com *ic = ifp->if_l2com;
WI_LOCK(sc);
/* XXX handle WEP special case handling? */
wi_write_val(sc, WI_RID_PROMISC,
(ic->ic_opmode == IEEE80211_M_MONITOR ||
(ifp->if_flags & IFF_PROMISC)));
WI_UNLOCK(sc);
}
static void
wi_read_nicid(struct wi_softc *sc)
{
struct wi_card_ident *id;
char *p;
int len;
u_int16_t ver[4];
/* getting chip identity */
memset(ver, 0, sizeof(ver));
len = sizeof(ver);
wi_read_rid(sc, WI_RID_CARD_ID, ver, &len);
sc->sc_firmware_type = WI_NOTYPE;
sc->sc_nic_id = le16toh(ver[0]);
for (id = wi_card_ident; id->card_name != NULL; id++) {
if (sc->sc_nic_id == id->card_id) {
sc->sc_nic_name = id->card_name;
sc->sc_firmware_type = id->firm_type;
break;
}
}
if (sc->sc_firmware_type == WI_NOTYPE) {
if (sc->sc_nic_id & 0x8000) {
sc->sc_firmware_type = WI_INTERSIL;
sc->sc_nic_name = "Unknown Prism chip";
} else {
sc->sc_firmware_type = WI_LUCENT;
sc->sc_nic_name = "Unknown Lucent chip";
}
}
if (bootverbose)
device_printf(sc->sc_dev, "using %s\n", sc->sc_nic_name);
/* get primary firmware version (Only Prism chips) */
if (sc->sc_firmware_type != WI_LUCENT) {
memset(ver, 0, sizeof(ver));
len = sizeof(ver);
wi_read_rid(sc, WI_RID_PRI_IDENTITY, ver, &len);
sc->sc_pri_firmware_ver = le16toh(ver[2]) * 10000 +
le16toh(ver[3]) * 100 + le16toh(ver[1]);
}
/* get station firmware version */
memset(ver, 0, sizeof(ver));
len = sizeof(ver);
wi_read_rid(sc, WI_RID_STA_IDENTITY, ver, &len);
sc->sc_sta_firmware_ver = le16toh(ver[2]) * 10000 +
le16toh(ver[3]) * 100 + le16toh(ver[1]);
if (sc->sc_firmware_type == WI_INTERSIL &&
(sc->sc_sta_firmware_ver == 10102 ||
sc->sc_sta_firmware_ver == 20102)) {
char ident[12];
memset(ident, 0, sizeof(ident));
len = sizeof(ident);
/* value should be the format like "V2.00-11" */
if (wi_read_rid(sc, WI_RID_SYMBOL_IDENTITY, ident, &len) == 0 &&
*(p = (char *)ident) >= 'A' &&
p[2] == '.' && p[5] == '-' && p[8] == '\0') {
sc->sc_firmware_type = WI_SYMBOL;
sc->sc_sta_firmware_ver = (p[1] - '0') * 10000 +
(p[3] - '0') * 1000 + (p[4] - '0') * 100 +
(p[6] - '0') * 10 + (p[7] - '0');
}
}
if (bootverbose) {
device_printf(sc->sc_dev, "%s Firmware: ",
wi_firmware_names[sc->sc_firmware_type]);
if (sc->sc_firmware_type != WI_LUCENT) /* XXX */
printf("Primary (%u.%u.%u), ",
sc->sc_pri_firmware_ver / 10000,
(sc->sc_pri_firmware_ver % 10000) / 100,
sc->sc_pri_firmware_ver % 100);
printf("Station (%u.%u.%u)\n",
sc->sc_sta_firmware_ver / 10000,
(sc->sc_sta_firmware_ver % 10000) / 100,
sc->sc_sta_firmware_ver % 100);
}
}
static int
wi_write_ssid(struct wi_softc *sc, int rid, u_int8_t *buf, int buflen)
{
struct wi_ssid ssid;
if (buflen > IEEE80211_NWID_LEN)
return ENOBUFS;
memset(&ssid, 0, sizeof(ssid));
ssid.wi_len = htole16(buflen);
memcpy(ssid.wi_ssid, buf, buflen);
return wi_write_rid(sc, rid, &ssid, sizeof(ssid));
}
static int
wi_write_txrate(struct wi_softc *sc, struct ieee80211vap *vap)
{
static const uint16_t lucent_rates[12] = {
[ 0] = 3, /* auto */
[ 1] = 1, /* 1Mb/s */
[ 2] = 2, /* 2Mb/s */
[ 5] = 4, /* 5.5Mb/s */
[11] = 5 /* 11Mb/s */
};
static const uint16_t intersil_rates[12] = {
[ 0] = 0xf, /* auto */
[ 1] = 0, /* 1Mb/s */
[ 2] = 1, /* 2Mb/s */
[ 5] = 2, /* 5.5Mb/s */
[11] = 3, /* 11Mb/s */
};
const uint16_t *rates = sc->sc_firmware_type == WI_LUCENT ?
lucent_rates : intersil_rates;
struct ieee80211com *ic = vap->iv_ic;
const struct ieee80211_txparam *tp;
tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)];
return wi_write_val(sc, WI_RID_TX_RATE,
(tp->ucastrate == IEEE80211_FIXED_RATE_NONE ?
rates[0] : rates[tp->ucastrate / 2]));
}
static int
wi_write_wep(struct wi_softc *sc, struct ieee80211vap *vap)
{
int error = 0;
int i, keylen;
u_int16_t val;
struct wi_key wkey[IEEE80211_WEP_NKID];
switch (sc->sc_firmware_type) {
case WI_LUCENT:
val = (vap->iv_flags & IEEE80211_F_PRIVACY) ? 1 : 0;
error = wi_write_val(sc, WI_RID_ENCRYPTION, val);
if (error)
break;
if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0)
break;
error = wi_write_val(sc, WI_RID_TX_CRYPT_KEY, vap->iv_def_txkey);
if (error)
break;
memset(wkey, 0, sizeof(wkey));
for (i = 0; i < IEEE80211_WEP_NKID; i++) {
keylen = vap->iv_nw_keys[i].wk_keylen;
wkey[i].wi_keylen = htole16(keylen);
memcpy(wkey[i].wi_keydat, vap->iv_nw_keys[i].wk_key,
keylen);
}
error = wi_write_rid(sc, WI_RID_DEFLT_CRYPT_KEYS,
wkey, sizeof(wkey));
sc->sc_encryption = 0;
break;
case WI_INTERSIL:
val = HOST_ENCRYPT | HOST_DECRYPT;
if (vap->iv_flags & IEEE80211_F_PRIVACY) {
/*
* ONLY HWB3163 EVAL-CARD Firmware version
* less than 0.8 variant2
*
* If promiscuous mode disable, Prism2 chip
* does not work with WEP .
* It is under investigation for details.
* (ichiro@netbsd.org)
*/
if (sc->sc_sta_firmware_ver < 802 ) {
/* firm ver < 0.8 variant 2 */
wi_write_val(sc, WI_RID_PROMISC, 1);
}
wi_write_val(sc, WI_RID_CNFAUTHMODE,
vap->iv_bss->ni_authmode);
val |= PRIVACY_INVOKED;
} else {
wi_write_val(sc, WI_RID_CNFAUTHMODE, IEEE80211_AUTH_OPEN);
}
error = wi_write_val(sc, WI_RID_P2_ENCRYPTION, val);
if (error)
break;
sc->sc_encryption = val;
if ((val & PRIVACY_INVOKED) == 0)
break;
error = wi_write_val(sc, WI_RID_P2_TX_CRYPT_KEY, vap->iv_def_txkey);
break;
}
return error;
}
static int
wi_cmd(struct wi_softc *sc, int cmd, int val0, int val1, int val2)
{
int i, s = 0;
if (sc->wi_gone)
return (ENODEV);
/* wait for the busy bit to clear */
for (i = sc->wi_cmd_count; i > 0; i--) { /* 500ms */
if (!(CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY))
break;
DELAY(1*1000); /* 1ms */
}
if (i == 0) {
device_printf(sc->sc_dev, "%s: busy bit won't clear, cmd 0x%x\n",
__func__, cmd);
sc->wi_gone = 1;
return(ETIMEDOUT);
}
CSR_WRITE_2(sc, WI_PARAM0, val0);
CSR_WRITE_2(sc, WI_PARAM1, val1);
CSR_WRITE_2(sc, WI_PARAM2, val2);
CSR_WRITE_2(sc, WI_COMMAND, cmd);
if (cmd == WI_CMD_INI) {
/* XXX: should sleep here. */
DELAY(100*1000); /* 100ms delay for init */
}
for (i = 0; i < WI_TIMEOUT; i++) {
/*
* Wait for 'command complete' bit to be
* set in the event status register.
*/
s = CSR_READ_2(sc, WI_EVENT_STAT);
if (s & WI_EV_CMD) {
/* Ack the event and read result code. */
s = CSR_READ_2(sc, WI_STATUS);
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_CMD);
if (s & WI_STAT_CMD_RESULT) {
return(EIO);
}
break;
}
DELAY(WI_DELAY);
}
if (i == WI_TIMEOUT) {
device_printf(sc->sc_dev, "%s: timeout on cmd 0x%04x; "
"event status 0x%04x\n", __func__, cmd, s);
if (s == 0xffff)
sc->wi_gone = 1;
return(ETIMEDOUT);
}
return (0);
}
static int
wi_seek_bap(struct wi_softc *sc, int id, int off)
{
int i, status;
CSR_WRITE_2(sc, WI_SEL0, id);
CSR_WRITE_2(sc, WI_OFF0, off);
for (i = 0; ; i++) {
status = CSR_READ_2(sc, WI_OFF0);
if ((status & WI_OFF_BUSY) == 0)
break;
if (i == WI_TIMEOUT) {
device_printf(sc->sc_dev, "%s: timeout, id %x off %x\n",
__func__, id, off);
sc->sc_bap_off = WI_OFF_ERR; /* invalidate */
if (status == 0xffff)
sc->wi_gone = 1;
return ETIMEDOUT;
}
DELAY(1);
}
if (status & WI_OFF_ERR) {
device_printf(sc->sc_dev, "%s: error, id %x off %x\n",
__func__, id, off);
sc->sc_bap_off = WI_OFF_ERR; /* invalidate */
return EIO;
}
sc->sc_bap_id = id;
sc->sc_bap_off = off;
return 0;
}
static int
wi_read_bap(struct wi_softc *sc, int id, int off, void *buf, int buflen)
{
u_int16_t *ptr;
int i, error, cnt;
if (buflen == 0)
return 0;
if (id != sc->sc_bap_id || off != sc->sc_bap_off) {
if ((error = wi_seek_bap(sc, id, off)) != 0)
return error;
}
cnt = (buflen + 1) / 2;
ptr = (u_int16_t *)buf;
for (i = 0; i < cnt; i++)
*ptr++ = CSR_READ_2(sc, WI_DATA0);
sc->sc_bap_off += cnt * 2;
return 0;
}
static int
wi_write_bap(struct wi_softc *sc, int id, int off, void *buf, int buflen)
{
u_int16_t *ptr;
int i, error, cnt;
if (buflen == 0)
return 0;
if (id != sc->sc_bap_id || off != sc->sc_bap_off) {
if ((error = wi_seek_bap(sc, id, off)) != 0)
return error;
}
cnt = (buflen + 1) / 2;
ptr = (u_int16_t *)buf;
for (i = 0; i < cnt; i++)
CSR_WRITE_2(sc, WI_DATA0, ptr[i]);
sc->sc_bap_off += cnt * 2;
return 0;
}
static int
wi_mwrite_bap(struct wi_softc *sc, int id, int off, struct mbuf *m0, int totlen)
{
int error, len;
struct mbuf *m;
for (m = m0; m != NULL && totlen > 0; m = m->m_next) {
if (m->m_len == 0)
continue;
len = min(m->m_len, totlen);
if (((u_long)m->m_data) % 2 != 0 || len % 2 != 0) {
m_copydata(m, 0, totlen, (caddr_t)&sc->sc_txbuf);
return wi_write_bap(sc, id, off, (caddr_t)&sc->sc_txbuf,
totlen);
}
if ((error = wi_write_bap(sc, id, off, m->m_data, len)) != 0)
return error;
off += m->m_len;
totlen -= len;
}
return 0;
}
static int
wi_alloc_fid(struct wi_softc *sc, int len, int *idp)
{
int i;
if (wi_cmd(sc, WI_CMD_ALLOC_MEM, len, 0, 0)) {
device_printf(sc->sc_dev, "%s: failed to allocate %d bytes on NIC\n",
__func__, len);
return ENOMEM;
}
for (i = 0; i < WI_TIMEOUT; i++) {
if (CSR_READ_2(sc, WI_EVENT_STAT) & WI_EV_ALLOC)
break;
DELAY(1);
}
if (i == WI_TIMEOUT) {
device_printf(sc->sc_dev, "%s: timeout in alloc\n", __func__);
return ETIMEDOUT;
}
*idp = CSR_READ_2(sc, WI_ALLOC_FID);
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_ALLOC);
return 0;
}
static int
wi_read_rid(struct wi_softc *sc, int rid, void *buf, int *buflenp)
{
int error, len;
u_int16_t ltbuf[2];
/* Tell the NIC to enter record read mode. */
error = wi_cmd(sc, WI_CMD_ACCESS | WI_ACCESS_READ, rid, 0, 0);
if (error)
return error;
error = wi_read_bap(sc, rid, 0, ltbuf, sizeof(ltbuf));
if (error)
return error;
if (le16toh(ltbuf[1]) != rid) {
device_printf(sc->sc_dev, "record read mismatch, rid=%x, got=%x\n",
rid, le16toh(ltbuf[1]));
return EIO;
}
len = (le16toh(ltbuf[0]) - 1) * 2; /* already got rid */
if (*buflenp < len) {
device_printf(sc->sc_dev, "record buffer is too small, "
"rid=%x, size=%d, len=%d\n",
rid, *buflenp, len);
return ENOSPC;
}
*buflenp = len;
return wi_read_bap(sc, rid, sizeof(ltbuf), buf, len);
}
static int
wi_write_rid(struct wi_softc *sc, int rid, void *buf, int buflen)
{
int error;
u_int16_t ltbuf[2];
ltbuf[0] = htole16((buflen + 1) / 2 + 1); /* includes rid */
ltbuf[1] = htole16(rid);
error = wi_write_bap(sc, rid, 0, ltbuf, sizeof(ltbuf));
if (error) {
device_printf(sc->sc_dev, "%s: bap0 write failure, rid 0x%x\n",
__func__, rid);
return error;
}
error = wi_write_bap(sc, rid, sizeof(ltbuf), buf, buflen);
if (error) {
device_printf(sc->sc_dev, "%s: bap1 write failure, rid 0x%x\n",
__func__, rid);
return error;
}
return wi_cmd(sc, WI_CMD_ACCESS | WI_ACCESS_WRITE, rid, 0, 0);
}
static int
wi_write_appie(struct wi_softc *sc, int rid, const struct ieee80211_appie *ie)
{
/* NB: 42 bytes is probably ok to have on the stack */
char buf[sizeof(uint16_t) + 40];
if (ie->ie_len > 40)
return EINVAL;
/* NB: firmware requires 16-bit ie length before ie data */
*(uint16_t *) buf = htole16(ie->ie_len);
memcpy(buf + sizeof(uint16_t), ie->ie_data, ie->ie_len);
return wi_write_rid(sc, rid, buf, ie->ie_len + sizeof(uint16_t));
}
int
wi_alloc(device_t dev, int rid)
{
struct wi_softc *sc = device_get_softc(dev);
if (sc->wi_bus_type != WI_BUS_PCI_NATIVE) {
sc->iobase_rid = rid;
sc->iobase = bus_alloc_resource(dev, SYS_RES_IOPORT,
&sc->iobase_rid, 0, ~0, (1 << 6),
rman_make_alignment_flags(1 << 6) | RF_ACTIVE);
if (sc->iobase == NULL) {
device_printf(dev, "No I/O space?!\n");
return ENXIO;
}
sc->wi_io_addr = rman_get_start(sc->iobase);
sc->wi_btag = rman_get_bustag(sc->iobase);
sc->wi_bhandle = rman_get_bushandle(sc->iobase);
} else {
sc->mem_rid = rid;
sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->mem_rid, RF_ACTIVE);
if (sc->mem == NULL) {
device_printf(dev, "No Mem space on prism2.5?\n");
return ENXIO;
}
sc->wi_btag = rman_get_bustag(sc->mem);
sc->wi_bhandle = rman_get_bushandle(sc->mem);
}
sc->irq_rid = 0;
sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
RF_ACTIVE |
((sc->wi_bus_type == WI_BUS_PCCARD) ? 0 : RF_SHAREABLE));
if (sc->irq == NULL) {
wi_free(dev);
device_printf(dev, "No irq?!\n");
return ENXIO;
}
sc->sc_dev = dev;
sc->sc_unit = device_get_unit(dev);
return 0;
}
void
wi_free(device_t dev)
{
struct wi_softc *sc = device_get_softc(dev);
if (sc->iobase != NULL) {
bus_release_resource(dev, SYS_RES_IOPORT, sc->iobase_rid, sc->iobase);
sc->iobase = NULL;
}
if (sc->irq != NULL) {
bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
sc->irq = NULL;
}
if (sc->mem != NULL) {
bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
sc->mem = NULL;
}
}
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