/*-
 * SPDX-License-Identifier: BSD-4-Clause
 *
 * 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.
 */
/*
 * Aironet 4500/4800 802.11 PCMCIA/ISA/PCI driver for FreeBSD.
 *
 * Written by Bill Paul <wpaul@ctr.columbia.edu>
 * Electrical Engineering Department
 * Columbia University, New York City
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

/*
 * The Aironet 4500/4800 series cards come in PCMCIA, ISA and PCI form.
 * This driver supports all three device types (PCI devices are supported
 * through an extra PCI shim: /sys/dev/an/if_an_pci.c). ISA devices can be
 * supported either using hard-coded IO port/IRQ settings or via Plug
 * and Play. The 4500 series devices support 1Mbps and 2Mbps data rates.
 * The 4800 devices support 1, 2, 5.5 and 11Mbps rates.
 *
 * Like the WaveLAN/IEEE cards, the Aironet NICs are all essentially
 * PCMCIA devices. The ISA and PCI cards are a combination of a PCMCIA
 * device and a PCMCIA to ISA or PCMCIA to PCI adapter card. There are
 * a couple of important differences though:
 *
 * - Lucent ISA card looks to the host like a PCMCIA controller with
 *   a PCMCIA WaveLAN card inserted. This means that even desktop
 *   machines need to be configured with PCMCIA support in order to
 *   use WaveLAN/IEEE ISA cards. The Aironet cards on the other hand
 *   actually look like normal ISA and PCI devices to the host, so
 *   no PCMCIA controller support is needed
 *
 * The latter point results in a small gotcha. The Aironet PCMCIA
 * cards can be configured for one of two operating modes depending
 * on how the Vpp1 and Vpp2 programming voltages are set when the
 * card is activated. In order to put the card in proper PCMCIA
 * operation (where the CIS table is visible and the interface is
 * programmed for PCMCIA operation), both Vpp1 and Vpp2 have to be
 * set to 5 volts. FreeBSD by default doesn't set the Vpp voltages,
 * which leaves the card in ISA/PCI mode, which prevents it from
 * being activated as an PCMCIA device.
 *
 * Note that some PCMCIA controller software packages for Windows NT
 * fail to set the voltages as well.
 *
 * The Aironet devices can operate in both station mode and access point
 * mode. Typically, when programmed for station mode, the card can be set
 * to automatically perform encapsulation/decapsulation of Ethernet II
 * and 802.3 frames within 802.11 frames so that the host doesn't have
 * to do it itself. This driver doesn't program the card that way: the
 * driver handles all of the encapsulation/decapsulation itself.
 */

#include "opt_inet.h"

#ifdef INET
#define ANCACHE                 /* enable signal strength cache */
#endif

#include <sys/param.h>
#include <sys/ctype.h>
#include <sys/systm.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>
#ifdef ANCACHE
#include <sys/syslog.h>
#endif
#include <sys/sysctl.h>

#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <machine/resource.h>
#include <sys/malloc.h>

#include <net/if.h>
#include <net/if_var.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/ethernet.h>
#include <net/if_types.h>
#include <net/if_media.h>

#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_ioctl.h>

#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#endif

#include <net/bpf.h>

#include <machine/md_var.h>

#include <dev/an/if_aironet_ieee.h>
#include <dev/an/if_anreg.h>

/* These are global because we need them in sys/pci/if_an_p.c. */
static void an_reset(struct an_softc *);
static int an_init_mpi350_desc(struct an_softc *);
static int an_ioctl(struct ifnet *, u_long, caddr_t);
static void an_init(void *);
static void an_init_locked(struct an_softc *);
static int an_init_tx_ring(struct an_softc *);
static void an_start(struct ifnet *);
static void an_start_locked(struct ifnet *);
static void an_watchdog(struct an_softc *);
static void an_rxeof(struct an_softc *);
static void an_txeof(struct an_softc *, int);

static void an_promisc(struct an_softc *, int);
static int an_cmd(struct an_softc *, int, int);
static int an_cmd_struct(struct an_softc *, struct an_command *,
    struct an_reply *);
static int an_read_record(struct an_softc *, struct an_ltv_gen *);
static int an_write_record(struct an_softc *, struct an_ltv_gen *);
static int an_read_data(struct an_softc *, int, int, caddr_t, int);
static int an_write_data(struct an_softc *, int, int, caddr_t, int);
static int an_seek(struct an_softc *, int, int, int);
static int an_alloc_nicmem(struct an_softc *, int, int *);
static int an_dma_malloc(struct an_softc *, bus_size_t, struct an_dma_alloc *,
    int);
static void an_dma_free(struct an_softc *, struct an_dma_alloc *);
static void an_dma_malloc_cb(void *, bus_dma_segment_t *, int, int);
static void an_stats_update(void *);
static void an_setdef(struct an_softc *, struct an_req *);
#ifdef ANCACHE
static void an_cache_store(struct an_softc *, struct ether_header *,
    struct mbuf *, u_int8_t, u_int8_t);
#endif

/* function definitions for use with the Cisco's Linux configuration
   utilities
*/

static int readrids(struct ifnet*, struct aironet_ioctl*);
static int writerids(struct ifnet*, struct aironet_ioctl*);
static int flashcard(struct ifnet*, struct aironet_ioctl*);

static int cmdreset(struct ifnet *);
static int setflashmode(struct ifnet *);
static int flashgchar(struct ifnet *,int,int);
static int flashpchar(struct ifnet *,int,int);
static int flashputbuf(struct ifnet *);
static int flashrestart(struct ifnet *);
static int WaitBusy(struct ifnet *, int);
static int unstickbusy(struct ifnet *);

static void an_dump_record      (struct an_softc *,struct an_ltv_gen *,
                                    char *);

static int an_media_change      (struct ifnet *);
static void an_media_status     (struct ifnet *, struct ifmediareq *);

static int      an_dump = 0;
static int      an_cache_mode = 0;

#define DBM 0
#define PERCENT 1
#define RAW 2

static char an_conf[256];
static char an_conf_cache[256];

/* sysctl vars */

static SYSCTL_NODE(_hw, OID_AUTO, an, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
    "Wireless driver parameters");

/* XXX violate ethernet/netgraph callback hooks */
extern  void    (*ng_ether_attach_p)(struct ifnet *ifp);
extern  void    (*ng_ether_detach_p)(struct ifnet *ifp);

static int
sysctl_an_dump(SYSCTL_HANDLER_ARGS)
{
        int     error, r, last;
        char    *s = an_conf;

        last = an_dump;

        switch (an_dump) {
        case 0:
                strcpy(an_conf, "off");
                break;
        case 1:
                strcpy(an_conf, "type");
                break;
        case 2:
                strcpy(an_conf, "dump");
                break;
        default:
                snprintf(an_conf, 5, "%x", an_dump);
                break;
        }

        error = sysctl_handle_string(oidp, an_conf, sizeof(an_conf), req);

        if (strncmp(an_conf,"off", 3) == 0) {
                an_dump = 0;
        }
        if (strncmp(an_conf,"dump", 4) == 0) {
                an_dump = 1;
        }
        if (strncmp(an_conf,"type", 4) == 0) {
                an_dump = 2;
        }
        if (*s == 'f') {
                r = 0;
                for (;;s++) {
                        if ((*s >= '0') && (*s <= '9')) {
                                r = r * 16 + (*s - '0');
                        } else if ((*s >= 'a') && (*s <= 'f')) {
                                r = r * 16 + (*s - 'a' + 10);
                        } else {
                                break;
                        }
                }
                an_dump = r;
        }
        if (an_dump != last)
                printf("Sysctl changed for Aironet driver\n");

        return error;
}

SYSCTL_PROC(_hw_an, OID_AUTO, an_dump,
    CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_NEEDGIANT, 0, sizeof(an_conf),
    sysctl_an_dump, "A",
    "");

static int
sysctl_an_cache_mode(SYSCTL_HANDLER_ARGS)
{
        int     error;

        switch (an_cache_mode) {
        case 1:
                strcpy(an_conf_cache, "per");
                break;
        case 2:
                strcpy(an_conf_cache, "raw");
                break;
        default:
                strcpy(an_conf_cache, "dbm");
                break;
        }

        error = sysctl_handle_string(oidp, an_conf_cache,
                        sizeof(an_conf_cache), req);

        if (strncmp(an_conf_cache,"dbm", 3) == 0) {
                an_cache_mode = 0;
        }
        if (strncmp(an_conf_cache,"per", 3) == 0) {
                an_cache_mode = 1;
        }
        if (strncmp(an_conf_cache,"raw", 3) == 0) {
                an_cache_mode = 2;
        }

        return error;
}

SYSCTL_PROC(_hw_an, OID_AUTO, an_cache_mode,
    CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_NEEDGIANT, 0, sizeof(an_conf_cache),
    sysctl_an_cache_mode, "A",
    "");

/*
 * We probe for an Aironet 4500/4800 card by attempting to
 * read the default SSID list. On reset, the first entry in
 * the SSID list will contain the name "tsunami." If we don't
 * find this, then there's no card present.
 */
int
an_probe(device_t dev)
{
        struct an_softc *sc = device_get_softc(dev);
        struct an_ltv_ssidlist_new      ssid;
        int     error;

        bzero((char *)&ssid, sizeof(ssid));

        error = an_alloc_port(dev, 0, AN_IOSIZ);
        if (error != 0)
                return (0);

        /* can't do autoprobing */
        if (rman_get_start(sc->port_res) == -1)
                return(0);

        /*
         * We need to fake up a softc structure long enough
         * to be able to issue commands and call some of the
         * other routines.
         */
        ssid.an_len = sizeof(ssid);
        ssid.an_type = AN_RID_SSIDLIST;

        /* Make sure interrupts are disabled. */
        sc->mpi350 = 0;
        CSR_WRITE_2(sc, AN_INT_EN(sc->mpi350), 0);
        CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), 0xFFFF);

        sc->an_dev = dev;
        mtx_init(&sc->an_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
            MTX_DEF);
        AN_LOCK(sc);
        an_reset(sc);

        if (an_cmd(sc, AN_CMD_READCFG, 0)) {
                AN_UNLOCK(sc);
                goto fail;
        }

        if (an_read_record(sc, (struct an_ltv_gen *)&ssid)) {
                AN_UNLOCK(sc);
                goto fail;
        }

        /* See if the ssid matches what we expect ... but doesn't have to */
        if (strcmp(ssid.an_entry[0].an_ssid, AN_DEF_SSID)) {
                AN_UNLOCK(sc);
                goto fail;
        }

        AN_UNLOCK(sc);
        return(AN_IOSIZ);
fail:
        mtx_destroy(&sc->an_mtx);
        return(0);
}

/*
 * Allocate a port resource with the given resource id.
 */
int
an_alloc_port(device_t dev, int rid, int size)
{
        struct an_softc *sc = device_get_softc(dev);
        struct resource *res;

        res = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, &rid,
                                          size, RF_ACTIVE);
        if (res) {
                sc->port_rid = rid;
                sc->port_res = res;
                return (0);
        } else {
                return (ENOENT);
        }
}

/*
 * Allocate a memory resource with the given resource id.
 */
int an_alloc_memory(device_t dev, int rid, int size)
{
        struct an_softc *sc = device_get_softc(dev);
        struct resource *res;

        res = bus_alloc_resource_anywhere(dev, SYS_RES_MEMORY, &rid,
                                          size, RF_ACTIVE);
        if (res) {
                sc->mem_rid = rid;
                sc->mem_res = res;
                sc->mem_used = size;
                return (0);
        } else {
                return (ENOENT);
        }
}

/*
 * Allocate a auxiliary memory resource with the given resource id.
 */
int an_alloc_aux_memory(device_t dev, int rid, int size)
{
        struct an_softc *sc = device_get_softc(dev);
        struct resource *res;

        res = bus_alloc_resource_anywhere(dev, SYS_RES_MEMORY, &rid,
                                          size, RF_ACTIVE);
        if (res) {
                sc->mem_aux_rid = rid;
                sc->mem_aux_res = res;
                sc->mem_aux_used = size;
                return (0);
        } else {
                return (ENOENT);
        }
}

/*
 * Allocate an irq resource with the given resource id.
 */
int
an_alloc_irq(device_t dev, int rid, int flags)
{
        struct an_softc *sc = device_get_softc(dev);
        struct resource *res;

        res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
                                     (RF_ACTIVE | flags));
        if (res) {
                sc->irq_rid = rid;
                sc->irq_res = res;
                return (0);
        } else {
                return (ENOENT);
        }
}

static void
an_dma_malloc_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
        bus_addr_t *paddr = (bus_addr_t*) arg;
        *paddr = segs->ds_addr;
}

/*
 * Alloc DMA memory and set the pointer to it
 */
static int
an_dma_malloc(struct an_softc *sc, bus_size_t size, struct an_dma_alloc *dma,
    int mapflags)
{
        int r;

        r = bus_dmamem_alloc(sc->an_dtag, (void**) &dma->an_dma_vaddr,
                             BUS_DMA_NOWAIT, &dma->an_dma_map);
        if (r != 0)
                goto fail_1;

        r = bus_dmamap_load(sc->an_dtag, dma->an_dma_map, dma->an_dma_vaddr,
                            size,
                            an_dma_malloc_cb,
                            &dma->an_dma_paddr,
                            mapflags | BUS_DMA_NOWAIT);
        if (r != 0)
                goto fail_2;

        dma->an_dma_size = size;
        return (0);

fail_2:
        bus_dmamap_unload(sc->an_dtag, dma->an_dma_map);
fail_1:
        bus_dmamem_free(sc->an_dtag, dma->an_dma_vaddr, dma->an_dma_map);
        return (r);
}

static void
an_dma_free(struct an_softc *sc, struct an_dma_alloc *dma)
{
        bus_dmamap_unload(sc->an_dtag, dma->an_dma_map);
        bus_dmamem_free(sc->an_dtag, dma->an_dma_vaddr, dma->an_dma_map);
        dma->an_dma_vaddr = 0;
}

/*
 * Release all resources
 */
void
an_release_resources(device_t dev)
{
        struct an_softc *sc = device_get_softc(dev);
        int i;

        if (sc->port_res) {
                bus_release_resource(dev, SYS_RES_IOPORT,
                                     sc->port_rid, sc->port_res);
                sc->port_res = 0;
        }
        if (sc->mem_res) {
                bus_release_resource(dev, SYS_RES_MEMORY,
                                     sc->mem_rid, sc->mem_res);
                sc->mem_res = 0;
        }
        if (sc->mem_aux_res) {
                bus_release_resource(dev, SYS_RES_MEMORY,
                                     sc->mem_aux_rid, sc->mem_aux_res);
                sc->mem_aux_res = 0;
        }
        if (sc->irq_res) {
                bus_release_resource(dev, SYS_RES_IRQ,
                                     sc->irq_rid, sc->irq_res);
                sc->irq_res = 0;
        }
        if (sc->an_rid_buffer.an_dma_paddr) {
                an_dma_free(sc, &sc->an_rid_buffer);
        }
        for (i = 0; i < AN_MAX_RX_DESC; i++)
                if (sc->an_rx_buffer[i].an_dma_paddr) {
                        an_dma_free(sc, &sc->an_rx_buffer[i]);
                }
        for (i = 0; i < AN_MAX_TX_DESC; i++)
                if (sc->an_tx_buffer[i].an_dma_paddr) {
                        an_dma_free(sc, &sc->an_tx_buffer[i]);
                }
        if (sc->an_dtag) {
                bus_dma_tag_destroy(sc->an_dtag);
        }

}

int
an_init_mpi350_desc(struct an_softc *sc)
{
        struct an_command       cmd_struct;
        struct an_reply         reply;
        struct an_card_rid_desc an_rid_desc;
        struct an_card_rx_desc  an_rx_desc;
        struct an_card_tx_desc  an_tx_desc;
        int                     i, desc;

        AN_LOCK_ASSERT(sc);
        if(!sc->an_rid_buffer.an_dma_paddr)
                an_dma_malloc(sc, AN_RID_BUFFER_SIZE,
                                 &sc->an_rid_buffer, 0);
        for (i = 0; i < AN_MAX_RX_DESC; i++)
                if(!sc->an_rx_buffer[i].an_dma_paddr)
                        an_dma_malloc(sc, AN_RX_BUFFER_SIZE,
                                      &sc->an_rx_buffer[i], 0);
        for (i = 0; i < AN_MAX_TX_DESC; i++)
                if(!sc->an_tx_buffer[i].an_dma_paddr)
                        an_dma_malloc(sc, AN_TX_BUFFER_SIZE,
                                      &sc->an_tx_buffer[i], 0);

        /*
         * Allocate RX descriptor
         */
        bzero(&reply,sizeof(reply));
        cmd_struct.an_cmd   = AN_CMD_ALLOC_DESC;
        cmd_struct.an_parm0 = AN_DESCRIPTOR_RX;
        cmd_struct.an_parm1 = AN_RX_DESC_OFFSET;
        cmd_struct.an_parm2 = AN_MAX_RX_DESC;
        if (an_cmd_struct(sc, &cmd_struct, &reply)) {
                if_printf(sc->an_ifp, "failed to allocate RX descriptor\n");
                return(EIO);
        }

        for (desc = 0; desc < AN_MAX_RX_DESC; desc++) {
                bzero(&an_rx_desc, sizeof(an_rx_desc));
                an_rx_desc.an_valid = 1;
                an_rx_desc.an_len = AN_RX_BUFFER_SIZE;
                an_rx_desc.an_done = 0;
                an_rx_desc.an_phys = sc->an_rx_buffer[desc].an_dma_paddr;

                for (i = 0; i < sizeof(an_rx_desc) / 4; i++)
                        CSR_MEM_AUX_WRITE_4(sc, AN_RX_DESC_OFFSET
                            + (desc * sizeof(an_rx_desc))
                            + (i * 4),
                            ((u_int32_t *)(void *)&an_rx_desc)[i]);
        }

        /*
         * Allocate TX descriptor
         */

        bzero(&reply,sizeof(reply));
        cmd_struct.an_cmd   = AN_CMD_ALLOC_DESC;
        cmd_struct.an_parm0 = AN_DESCRIPTOR_TX;
        cmd_struct.an_parm1 = AN_TX_DESC_OFFSET;
        cmd_struct.an_parm2 = AN_MAX_TX_DESC;
        if (an_cmd_struct(sc, &cmd_struct, &reply)) {
                if_printf(sc->an_ifp, "failed to allocate TX descriptor\n");
                return(EIO);
        }

        for (desc = 0; desc < AN_MAX_TX_DESC; desc++) {
                bzero(&an_tx_desc, sizeof(an_tx_desc));
                an_tx_desc.an_offset = 0;
                an_tx_desc.an_eoc = 0;
                an_tx_desc.an_valid = 0;
                an_tx_desc.an_len = 0;
                an_tx_desc.an_phys = sc->an_tx_buffer[desc].an_dma_paddr;

                for (i = 0; i < sizeof(an_tx_desc) / 4; i++)
                        CSR_MEM_AUX_WRITE_4(sc, AN_TX_DESC_OFFSET
                            + (desc * sizeof(an_tx_desc))
                            + (i * 4),
                            ((u_int32_t *)(void *)&an_tx_desc)[i]);
        }

        /*
         * Allocate RID descriptor
         */

        bzero(&reply,sizeof(reply));
        cmd_struct.an_cmd   = AN_CMD_ALLOC_DESC;
        cmd_struct.an_parm0 = AN_DESCRIPTOR_HOSTRW;
        cmd_struct.an_parm1 = AN_HOST_DESC_OFFSET;
        cmd_struct.an_parm2 = 1;
        if (an_cmd_struct(sc, &cmd_struct, &reply)) {
                if_printf(sc->an_ifp, "failed to allocate host descriptor\n");
                return(EIO);
        }

        bzero(&an_rid_desc, sizeof(an_rid_desc));
        an_rid_desc.an_valid = 1;
        an_rid_desc.an_len = AN_RID_BUFFER_SIZE;
        an_rid_desc.an_rid = 0;
        an_rid_desc.an_phys = sc->an_rid_buffer.an_dma_paddr;

        for (i = 0; i < sizeof(an_rid_desc) / 4; i++)
                CSR_MEM_AUX_WRITE_4(sc, AN_HOST_DESC_OFFSET + i * 4,
                                    ((u_int32_t *)(void *)&an_rid_desc)[i]);

        return(0);
}

int
an_attach(struct an_softc *sc, int flags)
{
        struct ifnet            *ifp;
        int                     error = EIO;
        int                     i, nrate, mword;
        u_int8_t                r;

        ifp = sc->an_ifp = if_alloc(IFT_ETHER);
        if (ifp == NULL) {
                device_printf(sc->an_dev, "can not if_alloc()\n");
                goto fail;
        }
        ifp->if_softc = sc;
        if_initname(ifp, device_get_name(sc->an_dev),
            device_get_unit(sc->an_dev));

        sc->an_gone = 0;
        sc->an_associated = 0;
        sc->an_monitor = 0;
        sc->an_was_monitor = 0;
        sc->an_flash_buffer = NULL;

        /* Reset the NIC. */
        AN_LOCK(sc);
        an_reset(sc);
        if (sc->mpi350) {
                error = an_init_mpi350_desc(sc);
                if (error)
                        goto fail;
        }

        /* Load factory config */
        if (an_cmd(sc, AN_CMD_READCFG, 0)) {
                device_printf(sc->an_dev, "failed to load config data\n");
                goto fail;
        }

        /* Read the current configuration */
        sc->an_config.an_type = AN_RID_GENCONFIG;
        sc->an_config.an_len = sizeof(struct an_ltv_genconfig);
        if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_config)) {
                device_printf(sc->an_dev, "read record failed\n");
                goto fail;
        }

        /* Read the card capabilities */
        sc->an_caps.an_type = AN_RID_CAPABILITIES;
        sc->an_caps.an_len = sizeof(struct an_ltv_caps);
        if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_caps)) {
                device_printf(sc->an_dev, "read record failed\n");
                goto fail;
        }

        /* Read ssid list */
        sc->an_ssidlist.an_type = AN_RID_SSIDLIST;
        sc->an_ssidlist.an_len = sizeof(struct an_ltv_ssidlist_new);
        if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_ssidlist)) {
                device_printf(sc->an_dev, "read record failed\n");
                goto fail;
        }

        /* Read AP list */
        sc->an_aplist.an_type = AN_RID_APLIST;
        sc->an_aplist.an_len = sizeof(struct an_ltv_aplist);
        if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_aplist)) {
                device_printf(sc->an_dev, "read record failed\n");
                goto fail;
        }

#ifdef ANCACHE
        /* Read the RSSI <-> dBm map */
        sc->an_have_rssimap = 0;
        if (sc->an_caps.an_softcaps & 8) {
                sc->an_rssimap.an_type = AN_RID_RSSI_MAP;
                sc->an_rssimap.an_len = sizeof(struct an_ltv_rssi_map);
                if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_rssimap)) {
                        device_printf(sc->an_dev,
                            "unable to get RSSI <-> dBM map\n");
                } else {
                        device_printf(sc->an_dev, "got RSSI <-> dBM map\n");
                        sc->an_have_rssimap = 1;
                }
        } else {
                device_printf(sc->an_dev, "no RSSI <-> dBM map\n");
        }
#endif
        AN_UNLOCK(sc);

        ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
        ifp->if_ioctl = an_ioctl;
        ifp->if_start = an_start;
        ifp->if_init = an_init;
        ifp->if_baudrate = 10000000;
        IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
        ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
        IFQ_SET_READY(&ifp->if_snd);

        bzero(sc->an_config.an_nodename, sizeof(sc->an_config.an_nodename));
        bcopy(AN_DEFAULT_NODENAME, sc->an_config.an_nodename,
            sizeof(AN_DEFAULT_NODENAME) - 1);

        bzero(sc->an_ssidlist.an_entry[0].an_ssid,
              sizeof(sc->an_ssidlist.an_entry[0].an_ssid));
        bcopy(AN_DEFAULT_NETNAME, sc->an_ssidlist.an_entry[0].an_ssid,
            sizeof(AN_DEFAULT_NETNAME) - 1);
        sc->an_ssidlist.an_entry[0].an_len = strlen(AN_DEFAULT_NETNAME);

        sc->an_config.an_opmode =
            AN_OPMODE_INFRASTRUCTURE_STATION;

        sc->an_tx_rate = 0;
        bzero((char *)&sc->an_stats, sizeof(sc->an_stats));

        nrate = 8;

        ifmedia_init(&sc->an_ifmedia, 0, an_media_change, an_media_status);
        if_printf(ifp, "supported rates: ");
#define ADD(s, o)       ifmedia_add(&sc->an_ifmedia, \
        IFM_MAKEWORD(IFM_IEEE80211, (s), (o), 0), 0, NULL)
        ADD(IFM_AUTO, 0);
        ADD(IFM_AUTO, IFM_IEEE80211_ADHOC);
        for (i = 0; i < nrate; i++) {
                r = sc->an_caps.an_rates[i];
                mword = ieee80211_rate2media(NULL, r, IEEE80211_MODE_AUTO);
                if (mword == 0)
                        continue;
                printf("%s%d%sMbps", (i != 0 ? " " : ""),
                    (r & IEEE80211_RATE_VAL) / 2, ((r & 0x1) != 0 ? ".5" : ""));
                ADD(mword, 0);
                ADD(mword, IFM_IEEE80211_ADHOC);
        }
        printf("\n");
        ifmedia_set(&sc->an_ifmedia, IFM_MAKEWORD(IFM_IEEE80211,
            IFM_AUTO, 0, 0));
#undef ADD

        /*
         * Call MI attach routine.
         */

        ether_ifattach(ifp, sc->an_caps.an_oemaddr);
        callout_init_mtx(&sc->an_stat_ch, &sc->an_mtx, 0);

        return(0);
fail:
        AN_UNLOCK(sc);
        mtx_destroy(&sc->an_mtx);
        if (ifp != NULL)
                if_free(ifp);
        return(error);
}

int
an_detach(device_t dev)
{
        struct an_softc         *sc = device_get_softc(dev);
        struct ifnet            *ifp = sc->an_ifp;

        if (sc->an_gone) {
                device_printf(dev,"already unloaded\n");
                return(0);
        }
        AN_LOCK(sc);
        an_stop(sc);
        sc->an_gone = 1;
        ifmedia_removeall(&sc->an_ifmedia);
        ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
        AN_UNLOCK(sc);
        ether_ifdetach(ifp);
        bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
        callout_drain(&sc->an_stat_ch);
        if_free(ifp);
        an_release_resources(dev);
        mtx_destroy(&sc->an_mtx);
        return (0);
}

static void
an_rxeof(struct an_softc *sc)
{
        struct ifnet   *ifp;
        struct ether_header *eh;
        struct ieee80211_frame *ih;
        struct an_rxframe rx_frame;
        struct an_rxframe_802_3 rx_frame_802_3;
        struct mbuf    *m;
        int             len, id, error = 0, i, count = 0;
        int             ieee80211_header_len;
        u_char          *bpf_buf;
        u_short         fc1;
        struct an_card_rx_desc an_rx_desc;
        u_int8_t        *buf;

        AN_LOCK_ASSERT(sc);

        ifp = sc->an_ifp;

        if (!sc->mpi350) {
                id = CSR_READ_2(sc, AN_RX_FID);

                if (sc->an_monitor && (ifp->if_flags & IFF_PROMISC)) {
                        /* read raw 802.11 packet */
                        bpf_buf = sc->buf_802_11;

                        /* read header */
                        if (an_read_data(sc, id, 0x0, (caddr_t)&rx_frame,
                                         sizeof(rx_frame))) {
                                if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                return;
                        }

                        /*
                         * skip beacon by default since this increases the
                         * system load a lot
                         */

                        if (!(sc->an_monitor & AN_MONITOR_INCLUDE_BEACON) &&
                            (rx_frame.an_frame_ctl & 
                             IEEE80211_FC0_SUBTYPE_BEACON)) {
                                return;
                        }

                        if (sc->an_monitor & AN_MONITOR_AIRONET_HEADER) {
                                len = rx_frame.an_rx_payload_len
                                        + sizeof(rx_frame);
                                /* Check for insane frame length */
                                if (len > sizeof(sc->buf_802_11)) {
                                        if_printf(ifp, "oversized packet "
                                               "received (%d, %d)\n",
                                               len, MCLBYTES);
                                        if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                        return;
                                }

                                bcopy((char *)&rx_frame,
                                      bpf_buf, sizeof(rx_frame));

                                error = an_read_data(sc, id, sizeof(rx_frame),
                                            (caddr_t)bpf_buf+sizeof(rx_frame),
                                            rx_frame.an_rx_payload_len);
                        } else {
                                fc1=rx_frame.an_frame_ctl >> 8;
                                ieee80211_header_len =
                                        sizeof(struct ieee80211_frame);
                                if ((fc1 & IEEE80211_FC1_DIR_TODS) &&
                                    (fc1 & IEEE80211_FC1_DIR_FROMDS)) {
                                        ieee80211_header_len += ETHER_ADDR_LEN;
                                }

                                len = rx_frame.an_rx_payload_len
                                        + ieee80211_header_len;
                                /* Check for insane frame length */
                                if (len > sizeof(sc->buf_802_11)) {
                                        if_printf(ifp, "oversized packet "
                                               "received (%d, %d)\n",
                                               len, MCLBYTES);
                                        if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                        return;
                                }

                                ih = (struct ieee80211_frame *)bpf_buf;

                                bcopy((char *)&rx_frame.an_frame_ctl,
                                      (char *)ih, ieee80211_header_len);

                                error = an_read_data(sc, id, sizeof(rx_frame) +
                                            rx_frame.an_gaplen,
                                            (caddr_t)ih +ieee80211_header_len,
                                            rx_frame.an_rx_payload_len);
                        }
                        /* dump raw 802.11 packet to bpf and skip ip stack */
                        BPF_TAP(ifp, bpf_buf, len);
                } else {
                        MGETHDR(m, M_NOWAIT, MT_DATA);
                        if (m == NULL) {
                                if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                return;
                        }
                        if (!(MCLGET(m, M_NOWAIT))) {
                                m_freem(m);
                                if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                return;
                        }
                        m->m_pkthdr.rcvif = ifp;
                        /* Read Ethernet encapsulated packet */

#ifdef ANCACHE
                        /* Read NIC frame header */
                        if (an_read_data(sc, id, 0, (caddr_t)&rx_frame,
                                         sizeof(rx_frame))) {
                                m_freem(m);
                                if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                return;
                        }
#endif
                        /* Read in the 802_3 frame header */
                        if (an_read_data(sc, id, 0x34,
                                         (caddr_t)&rx_frame_802_3,
                                         sizeof(rx_frame_802_3))) {
                                m_freem(m);
                                if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                return;
                        }
                        if (rx_frame_802_3.an_rx_802_3_status != 0) {
                                m_freem(m);
                                if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                return;
                        }
                        /* Check for insane frame length */
                        len = rx_frame_802_3.an_rx_802_3_payload_len;
                        if (len > sizeof(sc->buf_802_11)) {
                                m_freem(m);
                                if_printf(ifp, "oversized packet "
                                       "received (%d, %d)\n",
                                       len, MCLBYTES);
                                if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                return;
                        }
                        m->m_pkthdr.len = m->m_len =
                                rx_frame_802_3.an_rx_802_3_payload_len + 12;

                        eh = mtod(m, struct ether_header *);

                        bcopy((char *)&rx_frame_802_3.an_rx_dst_addr,
                              (char *)&eh->ether_dhost, ETHER_ADDR_LEN);
                        bcopy((char *)&rx_frame_802_3.an_rx_src_addr,
                              (char *)&eh->ether_shost, ETHER_ADDR_LEN);

                        /* in mbuf header type is just before payload */
                        error = an_read_data(sc, id, 0x44,
                                    (caddr_t)&(eh->ether_type),
                                    rx_frame_802_3.an_rx_802_3_payload_len);

                        if (error) {
                                m_freem(m);
                                if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                return;
                        }
                        if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);

                        /* Receive packet. */
#ifdef ANCACHE
                        an_cache_store(sc, eh, m,
                                rx_frame.an_rx_signal_strength,
                                rx_frame.an_rsvd0);
#endif
                        AN_UNLOCK(sc);
                        (*ifp->if_input)(ifp, m);
                        AN_LOCK(sc);
                }

        } else { /* MPI-350 */
                for (count = 0; count < AN_MAX_RX_DESC; count++){
                        for (i = 0; i < sizeof(an_rx_desc) / 4; i++)
                                ((u_int32_t *)(void *)&an_rx_desc)[i]
                                        = CSR_MEM_AUX_READ_4(sc,
                                                AN_RX_DESC_OFFSET
                                                + (count * sizeof(an_rx_desc))
                                                + (i * 4));

                        if (an_rx_desc.an_done && !an_rx_desc.an_valid) {
                                buf = sc->an_rx_buffer[count].an_dma_vaddr;

                                MGETHDR(m, M_NOWAIT, MT_DATA);
                                if (m == NULL) {
                                        if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                        return;
                                }
                                if (!(MCLGET(m, M_NOWAIT))) {
                                        m_freem(m);
                                        if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                        return;
                                }
                                m->m_pkthdr.rcvif = ifp;
                                /* Read Ethernet encapsulated packet */

                                /*
                                 * No ANCACHE support since we just get back
                                 * an Ethernet packet no 802.11 info
                                 */
#if 0
#ifdef ANCACHE
                                /* Read NIC frame header */
                                bcopy(buf, (caddr_t)&rx_frame,
                                      sizeof(rx_frame));
#endif
#endif
                                /* Check for insane frame length */
                                len = an_rx_desc.an_len + 12;
                                if (len > MCLBYTES) {
                                        m_freem(m);
                                        if_printf(ifp, "oversized packet "
                                               "received (%d, %d)\n",
                                               len, MCLBYTES);
                                        if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                                        return;
                                }

                                m->m_pkthdr.len = m->m_len =
                                        an_rx_desc.an_len + 12;

                                eh = mtod(m, struct ether_header *);

                                bcopy(buf, (char *)eh,
                                      m->m_pkthdr.len);

                                if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);

                                /* Receive packet. */
#if 0
#ifdef ANCACHE
                                an_cache_store(sc, eh, m,
                                        rx_frame.an_rx_signal_strength,
                                        rx_frame.an_rsvd0);
#endif
#endif
                                AN_UNLOCK(sc);
                                (*ifp->if_input)(ifp, m);
                                AN_LOCK(sc);

                                an_rx_desc.an_valid = 1;
                                an_rx_desc.an_len = AN_RX_BUFFER_SIZE;
                                an_rx_desc.an_done = 0;
                                an_rx_desc.an_phys =
                                        sc->an_rx_buffer[count].an_dma_paddr;

                                for (i = 0; i < sizeof(an_rx_desc) / 4; i++)
                                        CSR_MEM_AUX_WRITE_4(sc,
                                            AN_RX_DESC_OFFSET
                                            + (count * sizeof(an_rx_desc))
                                            + (i * 4),
                                            ((u_int32_t *)(void *)&an_rx_desc)[i]);

                        } else {
                                if_printf(ifp, "Didn't get valid RX packet "
                                       "%x %x %d\n",
                                       an_rx_desc.an_done,
                                       an_rx_desc.an_valid, an_rx_desc.an_len);
                        }
                }
        }
}

static void
an_txeof(struct an_softc *sc, int status)
{
        struct ifnet            *ifp;
        int                     id, i;

        AN_LOCK_ASSERT(sc);
        ifp = sc->an_ifp;

        sc->an_timer = 0;
        ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;

        if (!sc->mpi350) {
                id = CSR_READ_2(sc, AN_TX_CMP_FID(sc->mpi350));

                if (status & AN_EV_TX_EXC) {
                        if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
                } else
                        if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);

                for (i = 0; i < AN_TX_RING_CNT; i++) {
                        if (id == sc->an_rdata.an_tx_ring[i]) {
                                sc->an_rdata.an_tx_ring[i] = 0;
                                break;
                        }
                }

                AN_INC(sc->an_rdata.an_tx_cons, AN_TX_RING_CNT);
        } else { /* MPI 350 */
                id = CSR_READ_2(sc, AN_TX_CMP_FID(sc->mpi350));
                if (!sc->an_rdata.an_tx_empty){
                        if (status & AN_EV_TX_EXC) {
                                if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
                        } else
                                if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
                        AN_INC(sc->an_rdata.an_tx_cons, AN_MAX_TX_DESC);
                        if (sc->an_rdata.an_tx_prod ==
                            sc->an_rdata.an_tx_cons)
                                sc->an_rdata.an_tx_empty = 1;
                }
        }

        return;
}

/*
 * We abuse the stats updater to check the current NIC status. This
 * is important because we don't want to allow transmissions until
 * the NIC has synchronized to the current cell (either as the master
 * in an ad-hoc group, or as a station connected to an access point).
 *
 * Note that this function will be called via callout(9) with a lock held.
 */
static void
an_stats_update(void *xsc)
{
        struct an_softc         *sc;
        struct ifnet            *ifp;

        sc = xsc;
        AN_LOCK_ASSERT(sc);
        ifp = sc->an_ifp;
        if (sc->an_timer > 0 && --sc->an_timer == 0)
                an_watchdog(sc);

        sc->an_status.an_type = AN_RID_STATUS;
        sc->an_status.an_len = sizeof(struct an_ltv_status);
        if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_status))
                return;

        if (sc->an_status.an_opmode & AN_STATUS_OPMODE_IN_SYNC)
                sc->an_associated = 1;
        else
                sc->an_associated = 0;

        /* Don't do this while we're transmitting */
        if (ifp->if_drv_flags & IFF_DRV_OACTIVE) {
                callout_reset(&sc->an_stat_ch, hz, an_stats_update, sc);
                return;
        }

        sc->an_stats.an_len = sizeof(struct an_ltv_stats);
        sc->an_stats.an_type = AN_RID_32BITS_CUM;
        if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_stats.an_len))
                return;

        callout_reset(&sc->an_stat_ch, hz, an_stats_update, sc);

        return;
}

void
an_intr(void *xsc)
{
        struct an_softc         *sc;
        struct ifnet            *ifp;
        u_int16_t               status;

        sc = (struct an_softc*)xsc;

        AN_LOCK(sc);

        if (sc->an_gone) {
                AN_UNLOCK(sc);
                return;
        }

        ifp = sc->an_ifp;

        /* Disable interrupts. */
        CSR_WRITE_2(sc, AN_INT_EN(sc->mpi350), 0);

        status = CSR_READ_2(sc, AN_EVENT_STAT(sc->mpi350));
        CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), ~AN_INTRS(sc->mpi350));

        if (status & AN_EV_MIC) {
                CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_MIC);
        }

        if (status & AN_EV_LINKSTAT) {
                if (CSR_READ_2(sc, AN_LINKSTAT(sc->mpi350))
                    == AN_LINKSTAT_ASSOCIATED)
                        sc->an_associated = 1;
                else
                        sc->an_associated = 0;
                CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_LINKSTAT);
        }

        if (status & AN_EV_RX) {
                an_rxeof(sc);
                CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_RX);
        }

        if (sc->mpi350 && status & AN_EV_TX_CPY) {
                an_txeof(sc, status);
                CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_TX_CPY);
        }

        if (status & AN_EV_TX) {
                an_txeof(sc, status);
                CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_TX);
        }

        if (status & AN_EV_TX_EXC) {
                an_txeof(sc, status);
                CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_TX_EXC);
        }

        if (status & AN_EV_ALLOC)
                CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_ALLOC);

        /* Re-enable interrupts. */
        CSR_WRITE_2(sc, AN_INT_EN(sc->mpi350), AN_INTRS(sc->mpi350));

        if ((ifp->if_flags & IFF_UP) && !IFQ_DRV_IS_EMPTY(&ifp->if_snd))
                an_start_locked(ifp);

        AN_UNLOCK(sc);

        return;
}

static int
an_cmd_struct(struct an_softc *sc, struct an_command *cmd,
    struct an_reply *reply)
{
        int                     i;

        AN_LOCK_ASSERT(sc);
        for (i = 0; i != AN_TIMEOUT; i++) {
                if (CSR_READ_2(sc, AN_COMMAND(sc->mpi350)) & AN_CMD_BUSY) {
                        DELAY(1000);
                } else
                        break;
        }

        if( i == AN_TIMEOUT) {
                printf("BUSY\n");
                return(ETIMEDOUT);
        }

        CSR_WRITE_2(sc, AN_PARAM0(sc->mpi350), cmd->an_parm0);
        CSR_WRITE_2(sc, AN_PARAM1(sc->mpi350), cmd->an_parm1);
        CSR_WRITE_2(sc, AN_PARAM2(sc->mpi350), cmd->an_parm2);
        CSR_WRITE_2(sc, AN_COMMAND(sc->mpi350), cmd->an_cmd);

        for (i = 0; i < AN_TIMEOUT; i++) {
                if (CSR_READ_2(sc, AN_EVENT_STAT(sc->mpi350)) & AN_EV_CMD)
                        break;
                DELAY(1000);
        }

        reply->an_resp0 = CSR_READ_2(sc, AN_RESP0(sc->mpi350));
        reply->an_resp1 = CSR_READ_2(sc, AN_RESP1(sc->mpi350));
        reply->an_resp2 = CSR_READ_2(sc, AN_RESP2(sc->mpi350));
        reply->an_status = CSR_READ_2(sc, AN_STATUS(sc->mpi350));

        if (CSR_READ_2(sc, AN_COMMAND(sc->mpi350)) & AN_CMD_BUSY)
                CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350),
                    AN_EV_CLR_STUCK_BUSY);

        /* Ack the command */
        CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_CMD);

        if (i == AN_TIMEOUT)
                return(ETIMEDOUT);

        return(0);
}

static int
an_cmd(struct an_softc *sc, int cmd, int val)
{
        int                     i, s = 0;

        AN_LOCK_ASSERT(sc);
        CSR_WRITE_2(sc, AN_PARAM0(sc->mpi350), val);
        CSR_WRITE_2(sc, AN_PARAM1(sc->mpi350), 0);
        CSR_WRITE_2(sc, AN_PARAM2(sc->mpi350), 0);
        CSR_WRITE_2(sc, AN_COMMAND(sc->mpi350), cmd);

        for (i = 0; i < AN_TIMEOUT; i++) {
                if (CSR_READ_2(sc, AN_EVENT_STAT(sc->mpi350)) & AN_EV_CMD)
                        break;
                else {
                        if (CSR_READ_2(sc, AN_COMMAND(sc->mpi350)) == cmd)
                                CSR_WRITE_2(sc, AN_COMMAND(sc->mpi350), cmd);
                }
        }

        for (i = 0; i < AN_TIMEOUT; i++) {
                CSR_READ_2(sc, AN_RESP0(sc->mpi350));
                CSR_READ_2(sc, AN_RESP1(sc->mpi350));
                CSR_READ_2(sc, AN_RESP2(sc->mpi350));
                s = CSR_READ_2(sc, AN_STATUS(sc->mpi350));
                if ((s & AN_STAT_CMD_CODE) == (cmd & AN_STAT_CMD_CODE))
                        break;
        }

        /* Ack the command */
        CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_CMD);

        if (CSR_READ_2(sc, AN_COMMAND(sc->mpi350)) & AN_CMD_BUSY)
                CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_CLR_STUCK_BUSY);

        if (i == AN_TIMEOUT)
                return(ETIMEDOUT);

        return(0);
}

/*
 * This reset sequence may look a little strange, but this is the
 * most reliable method I've found to really kick the NIC in the
 * head and force it to reboot correctly.
 */
static void
an_reset(struct an_softc *sc)
{
        if (sc->an_gone)
                return;

        AN_LOCK_ASSERT(sc);
        an_cmd(sc, AN_CMD_ENABLE, 0);
        an_cmd(sc, AN_CMD_FW_RESTART, 0);
        an_cmd(sc, AN_CMD_NOOP2, 0);

        if (an_cmd(sc, AN_CMD_FORCE_SYNCLOSS, 0) == ETIMEDOUT)
                device_printf(sc->an_dev, "reset failed\n");

        an_cmd(sc, AN_CMD_DISABLE, 0);

        return;
}

/*
 * Read an LTV record from the NIC.
 */
static int
an_read_record(struct an_softc *sc, struct an_ltv_gen *ltv)
{
        struct an_ltv_gen       *an_ltv;
        struct an_card_rid_desc an_rid_desc;
        struct an_command       cmd;
        struct an_reply         reply;
        struct ifnet            *ifp;
        u_int16_t               *ptr;
        u_int8_t                *ptr2;
        int                     i, len;

        AN_LOCK_ASSERT(sc);
        if (ltv->an_len < 4 || ltv->an_type == 0)
                return(EINVAL);

        ifp = sc->an_ifp;
        if (!sc->mpi350){
                /* Tell the NIC to enter record read mode. */
                if (an_cmd(sc, AN_CMD_ACCESS|AN_ACCESS_READ, ltv->an_type)) {
                        if_printf(ifp, "RID access failed\n");
                        return(EIO);
                }

                /* Seek to the record. */
                if (an_seek(sc, ltv->an_type, 0, AN_BAP1)) {
                        if_printf(ifp, "seek to record failed\n");
                        return(EIO);
                }

                /*
                 * Read the length and record type and make sure they
                 * match what we expect (this verifies that we have enough
                 * room to hold all of the returned data).
                 * Length includes type but not length.
                 */
                len = CSR_READ_2(sc, AN_DATA1);
                if (len > (ltv->an_len - 2)) {
                        if_printf(ifp, "record length mismatch -- expected %d, "
                               "got %d for Rid %x\n",
                               ltv->an_len - 2, len, ltv->an_type);
                        len = ltv->an_len - 2;
                } else {
                        ltv->an_len = len + 2;
                }

                /* Now read the data. */
                len -= 2;       /* skip the type */
                ptr = &ltv->an_val;
                for (i = len; i > 1; i -= 2)
                        *ptr++ = CSR_READ_2(sc, AN_DATA1);
                if (i) {
                        ptr2 = (u_int8_t *)ptr;
                        *ptr2 = CSR_READ_1(sc, AN_DATA1);
                }
        } else { /* MPI-350 */
                if (!sc->an_rid_buffer.an_dma_vaddr)
                        return(EIO);
                an_rid_desc.an_valid = 1;
                an_rid_desc.an_len = AN_RID_BUFFER_SIZE;
                an_rid_desc.an_rid = 0;
                an_rid_desc.an_phys = sc->an_rid_buffer.an_dma_paddr;
                bzero(sc->an_rid_buffer.an_dma_vaddr, AN_RID_BUFFER_SIZE);

                bzero(&cmd, sizeof(cmd));
                bzero(&reply, sizeof(reply));
                cmd.an_cmd = AN_CMD_ACCESS|AN_ACCESS_READ;
                cmd.an_parm0 = ltv->an_type;

                for (i = 0; i < sizeof(an_rid_desc) / 4; i++)
                        CSR_MEM_AUX_WRITE_4(sc, AN_HOST_DESC_OFFSET + i * 4,
                            ((u_int32_t *)(void *)&an_rid_desc)[i]);

                if (an_cmd_struct(sc, &cmd, &reply)
                    || reply.an_status & AN_CMD_QUAL_MASK) {
                        if_printf(ifp, "failed to read RID %x %x %x %x %x, %d\n",
                               ltv->an_type,
                               reply.an_status,
                               reply.an_resp0,
                               reply.an_resp1,
                               reply.an_resp2,
                               i);
                        return(EIO);
                }

                an_ltv = (struct an_ltv_gen *)sc->an_rid_buffer.an_dma_vaddr;
                if (an_ltv->an_len + 2 < an_rid_desc.an_len) {
                        an_rid_desc.an_len = an_ltv->an_len;
                }

                len = an_rid_desc.an_len;
                if (len > (ltv->an_len - 2)) {
                        if_printf(ifp, "record length mismatch -- expected %d, "
                               "got %d for Rid %x\n",
                               ltv->an_len - 2, len, ltv->an_type);
                        len = ltv->an_len - 2;
                } else {
                        ltv->an_len = len + 2;
                }
                bcopy(&an_ltv->an_type,
                    &ltv->an_val,
                    len);
        }

        if (an_dump)
                an_dump_record(sc, ltv, "Read");

        return(0);
}

/*
 * Same as read, except we inject data instead of reading it.
 */
static int
an_write_record(struct an_softc *sc, struct an_ltv_gen *ltv)
{
        struct an_card_rid_desc an_rid_desc;
        struct an_command       cmd;
        struct an_reply         reply;
        u_int16_t               *ptr;
        u_int8_t                *ptr2;
        int                     i, len;

        AN_LOCK_ASSERT(sc);
        if (an_dump)
                an_dump_record(sc, ltv, "Write");

        if (!sc->mpi350){
                if (an_cmd(sc, AN_CMD_ACCESS|AN_ACCESS_READ, ltv->an_type))
                        return(EIO);

                if (an_seek(sc, ltv->an_type, 0, AN_BAP1))
                        return(EIO);

                /*
                 * Length includes type but not length.
                 */
                len = ltv->an_len - 2;
                CSR_WRITE_2(sc, AN_DATA1, len);

                len -= 2;       /* skip the type */
                ptr = &ltv->an_val;
                for (i = len; i > 1; i -= 2)
                        CSR_WRITE_2(sc, AN_DATA1, *ptr++);
                if (i) {
                        ptr2 = (u_int8_t *)ptr;
                        CSR_WRITE_1(sc, AN_DATA0, *ptr2);
                }

                if (an_cmd(sc, AN_CMD_ACCESS|AN_ACCESS_WRITE, ltv->an_type))
                        return(EIO);
        } else {
                /* MPI-350 */

                for (i = 0; i != AN_TIMEOUT; i++) {
                        if (CSR_READ_2(sc, AN_COMMAND(sc->mpi350))
                            & AN_CMD_BUSY) {
                                DELAY(10);
                        } else
                                break;
                }
                if (i == AN_TIMEOUT) {
                        printf("BUSY\n");
                }

                an_rid_desc.an_valid = 1;
                an_rid_desc.an_len = ltv->an_len - 2;
                an_rid_desc.an_rid = ltv->an_type;
                an_rid_desc.an_phys = sc->an_rid_buffer.an_dma_paddr;

                bcopy(&ltv->an_type, sc->an_rid_buffer.an_dma_vaddr,
                      an_rid_desc.an_len);

                bzero(&cmd,sizeof(cmd));
                bzero(&reply,sizeof(reply));
                cmd.an_cmd = AN_CMD_ACCESS|AN_ACCESS_WRITE;
                cmd.an_parm0 = ltv->an_type;

                for (i = 0; i < sizeof(an_rid_desc) / 4; i++)
                        CSR_MEM_AUX_WRITE_4(sc, AN_HOST_DESC_OFFSET + i * 4,
                            ((u_int32_t *)(void *)&an_rid_desc)[i]);

                DELAY(100000);

                if ((i = an_cmd_struct(sc, &cmd, &reply))) {
                        if_printf(sc->an_ifp,
                            "failed to write RID 1 %x %x %x %x %x, %d\n",
                            ltv->an_type,
                            reply.an_status,
                            reply.an_resp0,
                            reply.an_resp1,
                            reply.an_resp2,
                            i);
                        return(EIO);
                }

                if (reply.an_status & AN_CMD_QUAL_MASK) {
                        if_printf(sc->an_ifp,
                            "failed to write RID 2 %x %x %x %x %x, %d\n",
                            ltv->an_type,
                            reply.an_status,
                            reply.an_resp0,
                            reply.an_resp1,
                            reply.an_resp2,
                            i);
                        return(EIO);
                }
                DELAY(100000);
        }

        return(0);
}

static void
an_dump_record(struct an_softc *sc, struct an_ltv_gen *ltv, char *string)
{
        u_int8_t                *ptr2;
        int                     len;
        int                     i;
        int                     count = 0;
        char                    buf[17], temp;

        len = ltv->an_len - 4;
        if_printf(sc->an_ifp, "RID %4x, Length %4d, Mode %s\n",
                ltv->an_type, ltv->an_len - 4, string);

        if (an_dump == 1 || (an_dump == ltv->an_type)) {
                if_printf(sc->an_ifp, "\t");
                bzero(buf,sizeof(buf));

                ptr2 = (u_int8_t *)&ltv->an_val;
                for (i = len; i > 0; i--) {
                        printf("%02x ", *ptr2);

                        temp = *ptr2++;
                        if (isprint(temp))
                                buf[count] = temp;
                        else
                                buf[count] = '.';
                        if (++count == 16) {
                                count = 0;
                                printf("%s\n",buf);
                                if_printf(sc->an_ifp, "\t");
                                bzero(buf,sizeof(buf));
                        }
                }
                for (; count != 16; count++) {
                        printf("   ");
                }
                printf(" %s\n",buf);
        }
}

static int
an_seek(struct an_softc *sc, int id, int off, int chan)
{
        int                     i;
        int                     selreg, offreg;

        switch (chan) {
        case AN_BAP0:
                selreg = AN_SEL0;
                offreg = AN_OFF0;
                break;
        case AN_BAP1:
                selreg = AN_SEL1;
                offreg = AN_OFF1;
                break;
        default:
                if_printf(sc->an_ifp, "invalid data path: %x\n", chan);
                return(EIO);
        }

        CSR_WRITE_2(sc, selreg, id);
        CSR_WRITE_2(sc, offreg, off);

        for (i = 0; i < AN_TIMEOUT; i++) {
                if (!(CSR_READ_2(sc, offreg) & (AN_OFF_BUSY|AN_OFF_ERR)))
                        break;
        }

        if (i == AN_TIMEOUT)
                return(ETIMEDOUT);

        return(0);
}

static int
an_read_data(struct an_softc *sc, int id, int off, caddr_t buf, int len)
{
        int                     i;
        u_int16_t               *ptr;
        u_int8_t                *ptr2;

        if (off != -1) {
                if (an_seek(sc, id, off, AN_BAP1))
                        return(EIO);
        }

        ptr = (u_int16_t *)buf;
        for (i = len; i > 1; i -= 2)
                *ptr++ = CSR_READ_2(sc, AN_DATA1);
        if (i) {
                ptr2 = (u_int8_t *)ptr;
                *ptr2 = CSR_READ_1(sc, AN_DATA1);
        }

        return(0);
}

static int
an_write_data(struct an_softc *sc, int id, int off, caddr_t buf, int len)
{
        int                     i;
        u_int16_t               *ptr;
        u_int8_t                *ptr2;

        if (off != -1) {
                if (an_seek(sc, id, off, AN_BAP0))
                        return(EIO);
        }

        ptr = (u_int16_t *)buf;
        for (i = len; i > 1; i -= 2)
                CSR_WRITE_2(sc, AN_DATA0, *ptr++);
        if (i) {
                ptr2 = (u_int8_t *)ptr;
                CSR_WRITE_1(sc, AN_DATA0, *ptr2);
        }

        return(0);
}

/*
 * Allocate a region of memory inside the NIC and zero
 * it out.
 */
static int
an_alloc_nicmem(struct an_softc *sc, int len, int *id)
{
        int                     i;

        if (an_cmd(sc, AN_CMD_ALLOC_MEM, len)) {
                if_printf(sc->an_ifp, "failed to allocate %d bytes on NIC\n",
                    len);
                return(ENOMEM);
        }

        for (i = 0; i < AN_TIMEOUT; i++) {
                if (CSR_READ_2(sc, AN_EVENT_STAT(sc->mpi350)) & AN_EV_ALLOC)
                        break;
        }

        if (i == AN_TIMEOUT)
                return(ETIMEDOUT);

        CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_ALLOC);
        *id = CSR_READ_2(sc, AN_ALLOC_FID);

        if (an_seek(sc, *id, 0, AN_BAP0))
                return(EIO);

        for (i = 0; i < len / 2; i++)
                CSR_WRITE_2(sc, AN_DATA0, 0);

        return(0);
}

static void
an_setdef(struct an_softc *sc, struct an_req *areq)
{
        struct ifnet            *ifp;
        struct an_ltv_genconfig *cfg;
        struct an_ltv_ssidlist_new      *ssid;
        struct an_ltv_aplist    *ap;
        struct an_ltv_gen       *sp;

        ifp = sc->an_ifp;

        AN_LOCK_ASSERT(sc);
        switch (areq->an_type) {
        case AN_RID_GENCONFIG:
                cfg = (struct an_ltv_genconfig *)areq;

                bcopy((char *)&cfg->an_macaddr, IF_LLADDR(sc->an_ifp),
                    ETHER_ADDR_LEN);

                bcopy((char *)cfg, (char *)&sc->an_config,
                        sizeof(struct an_ltv_genconfig));
                break;
        case AN_RID_SSIDLIST:
                ssid = (struct an_ltv_ssidlist_new *)areq;
                bcopy((char *)ssid, (char *)&sc->an_ssidlist,
                        sizeof(struct an_ltv_ssidlist_new));
                break;
        case AN_RID_APLIST:
                ap = (struct an_ltv_aplist *)areq;
                bcopy((char *)ap, (char *)&sc->an_aplist,
                        sizeof(struct an_ltv_aplist));
                break;
        case AN_RID_TX_SPEED:
                sp = (struct an_ltv_gen *)areq;
                sc->an_tx_rate = sp->an_val;

                /* Read the current configuration */
                sc->an_config.an_type = AN_RID_GENCONFIG;
                sc->an_config.an_len = sizeof(struct an_ltv_genconfig);
                an_read_record(sc, (struct an_ltv_gen *)&sc->an_config);
                cfg = &sc->an_config;

                /* clear other rates and set the only one we want */
                bzero(cfg->an_rates, sizeof(cfg->an_rates));
                cfg->an_rates[0] = sc->an_tx_rate;

                /* Save the new rate */
                sc->an_config.an_type = AN_RID_GENCONFIG;
                sc->an_config.an_len = sizeof(struct an_ltv_genconfig);
                break;
        case AN_RID_WEP_TEMP:
                /* Cache the temp keys */
                bcopy(areq,
                    &sc->an_temp_keys[((struct an_ltv_key *)areq)->kindex],
                    sizeof(struct an_ltv_key));
        case AN_RID_WEP_PERM:
        case AN_RID_LEAPUSERNAME:
        case AN_RID_LEAPPASSWORD:
                an_init_locked(sc);

                /* Disable the MAC. */
                an_cmd(sc, AN_CMD_DISABLE, 0);

                /* Write the key */
                an_write_record(sc, (struct an_ltv_gen *)areq);

                /* Turn the MAC back on. */
                an_cmd(sc, AN_CMD_ENABLE, 0);

                break;
        case AN_RID_MONITOR_MODE:
                cfg = (struct an_ltv_genconfig *)areq;
                bpfdetach(ifp);
                if (ng_ether_detach_p != NULL)
                        (*ng_ether_detach_p) (ifp);
                sc->an_monitor = cfg->an_len;

                if (sc->an_monitor & AN_MONITOR) {
                        if (sc->an_monitor & AN_MONITOR_AIRONET_HEADER) {
                                bpfattach(ifp, DLT_AIRONET_HEADER,
                                        sizeof(struct ether_header));
                        } else {
                                bpfattach(ifp, DLT_IEEE802_11,
                                        sizeof(struct ether_header));
                        }
                } else {
                        bpfattach(ifp, DLT_EN10MB,
                                  sizeof(struct ether_header));
                        if (ng_ether_attach_p != NULL)
                                (*ng_ether_attach_p) (ifp);
                }
                break;
        default:
                if_printf(ifp, "unknown RID: %x\n", areq->an_type);
                return;
        }

        /* Reinitialize the card. */
        if (ifp->if_flags)
                an_init_locked(sc);

        return;
}

/*
 * Derived from Linux driver to enable promiscious mode.
 */

static void
an_promisc(struct an_softc *sc, int promisc)
{
        AN_LOCK_ASSERT(sc);
        if (sc->an_was_monitor) {
                an_reset(sc);
                if (sc->mpi350)
                        an_init_mpi350_desc(sc);
        }
        if (sc->an_monitor || sc->an_was_monitor)
                an_init_locked(sc);

        sc->an_was_monitor = sc->an_monitor;
        an_cmd(sc, AN_CMD_SET_MODE, promisc ? 0xffff : 0);

        return;
}

static int
an_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
{
        int                     error = 0;
        int                     len;
        int                     i, max;
        struct an_softc         *sc;
        struct an_req           *areq;
        struct ifreq            *ifr;
        struct thread           *td = curthread;
        struct ieee80211req     *ireq;
        struct ieee80211_channel        ch;
        u_int8_t                tmpstr[IEEE80211_NWID_LEN*2];
        u_int8_t                *tmpptr;
        struct an_ltv_genconfig *config;
        struct an_ltv_key       *key;
        struct an_ltv_status    *status;
        struct an_ltv_ssidlist_new      *ssids;
        int                     mode;
        struct aironet_ioctl    l_ioctl;

        sc = ifp->if_softc;
        ifr = (struct ifreq *)data;
        ireq = (struct ieee80211req *)data;

        config = (struct an_ltv_genconfig *)&sc->areq;
        key = (struct an_ltv_key *)&sc->areq;
        status = (struct an_ltv_status *)&sc->areq;
        ssids = (struct an_ltv_ssidlist_new *)&sc->areq;

        if (sc->an_gone) {
                error = ENODEV;
                goto out;
        }

        switch (command) {
        case SIOCSIFFLAGS:
                AN_LOCK(sc);
                if (ifp->if_flags & IFF_UP) {
                        if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
                            ifp->if_flags & IFF_PROMISC &&
                            !(sc->an_if_flags & IFF_PROMISC)) {
                                an_promisc(sc, 1);
                        } else if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
                            !(ifp->if_flags & IFF_PROMISC) &&
                            sc->an_if_flags & IFF_PROMISC) {
                                an_promisc(sc, 0);
                        } else
                                an_init_locked(sc);
                } else {
                        if (ifp->if_drv_flags & IFF_DRV_RUNNING)
                                an_stop(sc);
                }
                sc->an_if_flags = ifp->if_flags;
                AN_UNLOCK(sc);
                error = 0;
                break;
        case SIOCSIFMEDIA:
        case SIOCGIFMEDIA:
                error = ifmedia_ioctl(ifp, ifr, &sc->an_ifmedia, command);
                break;
        case SIOCADDMULTI:
        case SIOCDELMULTI:
                /* The Aironet has no multicast filter. */
                error = 0;
                break;
        case SIOCGAIRONET:
                error = priv_check(td, PRIV_DRIVER);
                if (error)
                        break;
                areq = malloc(sizeof(*areq), M_TEMP, M_WAITOK);
                error = copyin(ifr_data_get_ptr(ifr), areq, sizeof(*areq));
                if (error != 0) {
                        free(areq, M_TEMP);
                        break;
                }
                AN_LOCK(sc);
                memcpy(&sc->areq, areq, sizeof(sc->areq));
#ifdef ANCACHE
                if (sc->areq.an_type == AN_RID_ZERO_CACHE) {
                        sc->an_sigitems = sc->an_nextitem = 0;
                        free(areq, M_TEMP);
                        break;
                } else if (sc->areq.an_type == AN_RID_READ_CACHE) {
                        char *pt = (char *)&sc->areq.an_val;
                        bcopy((char *)&sc->an_sigitems, (char *)pt,
                            sizeof(int));
                        pt += sizeof(int);
                        sc->areq.an_len = sizeof(int) / 2;
                        bcopy((char *)&sc->an_sigcache, (char *)pt,
                            sizeof(struct an_sigcache) * sc->an_sigitems);
                        sc->areq.an_len += ((sizeof(struct an_sigcache) *
                            sc->an_sigitems) / 2) + 1;
                } else
#endif
                if (an_read_record(sc, (struct an_ltv_gen *)&sc->areq)) {
                        AN_UNLOCK(sc);
                        free(areq, M_TEMP);
                        error = EINVAL;
                        break;
                }
                memcpy(areq, &sc->areq, sizeof(*areq));
                AN_UNLOCK(sc);
                error = copyout(areq, ifr_data_get_ptr(ifr), sizeof(*areq));
                free(areq, M_TEMP);
                break;
        case SIOCSAIRONET:
                if ((error = priv_check(td, PRIV_DRIVER)))
                        goto out;
                AN_LOCK(sc);
                error = copyin(ifr_data_get_ptr(ifr), &sc->areq,
                    sizeof(sc->areq));
                if (error != 0)
                        break;
                an_setdef(sc, &sc->areq);
                AN_UNLOCK(sc);
                break;
        case SIOCGPRIVATE_0:            /* used by Cisco client utility */
                if ((error = priv_check(td, PRIV_DRIVER)))
                        goto out;
                error = copyin(ifr_data_get_ptr(ifr), &l_ioctl,
                    sizeof(l_ioctl));
                if (error)
                        goto out;
                mode = l_ioctl.command;

                AN_LOCK(sc);
                if (mode >= AIROGCAP && mode <= AIROGSTATSD32) {
                        error = readrids(ifp, &l_ioctl);
                } else if (mode >= AIROPCAP && mode <= AIROPLEAPUSR) {
                        error = writerids(ifp, &l_ioctl);
                } else if (mode >= AIROFLSHRST && mode <= AIRORESTART) {
                        error = flashcard(ifp, &l_ioctl);
                } else {
                        error =-1;
                }
                AN_UNLOCK(sc);
                if (!error) {
                        /* copy out the updated command info */
                        error = copyout(&l_ioctl, ifr_data_get_ptr(ifr),
                            sizeof(l_ioctl));
                }
                break;
        case SIOCGPRIVATE_1:            /* used by Cisco client utility */
                if ((error = priv_check(td, PRIV_DRIVER)))
                        goto out;
                error = copyin(ifr_data_get_ptr(ifr), &l_ioctl,
                    sizeof(l_ioctl));
                if (error)
                        goto out;
                l_ioctl.command = 0;
                error = AIROMAGIC;
                (void) copyout(&error, l_ioctl.data, sizeof(error));
                error = 0;
                break;
        case SIOCG80211:
                sc->areq.an_len = sizeof(sc->areq);
                /* was that a good idea DJA we are doing a short-cut */
                switch (ireq->i_type) {
                case IEEE80211_IOC_SSID:
                        AN_LOCK(sc);
                        if (ireq->i_val == -1) {
                                sc->areq.an_type = AN_RID_STATUS;
                                if (an_read_record(sc,
                                    (struct an_ltv_gen *)&sc->areq)) {
                                        error = EINVAL;
                                        AN_UNLOCK(sc);
                                        break;
                                }
                                len = status->an_ssidlen;
                                tmpptr = status->an_ssid;
                        } else if (ireq->i_val >= 0) {
                                sc->areq.an_type = AN_RID_SSIDLIST;
                                if (an_read_record(sc,
                                    (struct an_ltv_gen *)&sc->areq)) {
                                        error = EINVAL;
                                        AN_UNLOCK(sc);
                                        break;
                                }
                                max = (sc->areq.an_len - 4)
                                    / sizeof(struct an_ltv_ssid_entry);
                                if ( max > MAX_SSIDS ) {
                                        printf("To many SSIDs only using "
                                            "%d of %d\n",
                                            MAX_SSIDS, max);
                                        max = MAX_SSIDS;
                                }
                                if (ireq->i_val > max) {
                                        error = EINVAL;
                                        AN_UNLOCK(sc);
                                        break;
                                } else {
                                        len = ssids->an_entry[ireq->i_val].an_len;
                                        tmpptr = ssids->an_entry[ireq->i_val].an_ssid;
                                }
                        } else {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        if (len > IEEE80211_NWID_LEN) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        AN_UNLOCK(sc);
                        ireq->i_len = len;
                        bzero(tmpstr, IEEE80211_NWID_LEN);
                        bcopy(tmpptr, tmpstr, len);
                        error = copyout(tmpstr, ireq->i_data,
                            IEEE80211_NWID_LEN);
                        break;
                case IEEE80211_IOC_NUMSSIDS:
                        AN_LOCK(sc);
                        sc->areq.an_len = sizeof(sc->areq);
                        sc->areq.an_type = AN_RID_SSIDLIST;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                AN_UNLOCK(sc);
                                error = EINVAL;
                                break;
                        }
                        max = (sc->areq.an_len - 4)
                            / sizeof(struct an_ltv_ssid_entry);
                        AN_UNLOCK(sc);
                        if ( max > MAX_SSIDS ) {
                                printf("To many SSIDs only using "
                                    "%d of %d\n",
                                    MAX_SSIDS, max);
                                max = MAX_SSIDS;
                        }
                        ireq->i_val = max;
                        break;
                case IEEE80211_IOC_WEP:
                        AN_LOCK(sc);
                        sc->areq.an_type = AN_RID_ACTUALCFG;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        AN_UNLOCK(sc);
                        if (config->an_authtype & AN_AUTHTYPE_PRIVACY_IN_USE) {
                                if (config->an_authtype &
                                    AN_AUTHTYPE_ALLOW_UNENCRYPTED)
                                        ireq->i_val = IEEE80211_WEP_MIXED;
                                else
                                        ireq->i_val = IEEE80211_WEP_ON;
                        } else {
                                ireq->i_val = IEEE80211_WEP_OFF;
                        }
                        break;
                case IEEE80211_IOC_WEPKEY:
                        /*
                         * XXX: I'm not entierly convinced this is
                         * correct, but it's what is implemented in
                         * ancontrol so it will have to do until we get
                         * access to actual Cisco code.
                         */
                        if (ireq->i_val < 0 || ireq->i_val > 8) {
                                error = EINVAL;
                                break;
                        }
                        len = 0;
                        if (ireq->i_val < 5) {
                                AN_LOCK(sc);
                                sc->areq.an_type = AN_RID_WEP_TEMP;
                                for (i = 0; i < 5; i++) {
                                        if (an_read_record(sc,
                                            (struct an_ltv_gen *)&sc->areq)) {
                                                error = EINVAL;
                                                break;
                                        }
                                        if (key->kindex == 0xffff)
                                                break;
                                        if (key->kindex == ireq->i_val)
                                                len = key->klen;
                                        /* Required to get next entry */
                                        sc->areq.an_type = AN_RID_WEP_PERM;
                                }
                                AN_UNLOCK(sc);
                                if (error != 0) {
                                        break;
                                }
                        }
                        /* We aren't allowed to read the value of the
                         * key from the card so we just output zeros
                         * like we would if we could read the card, but
                         * denied the user access.
                         */
                        bzero(tmpstr, len);
                        ireq->i_len = len;
                        error = copyout(tmpstr, ireq->i_data, len);
                        break;
                case IEEE80211_IOC_NUMWEPKEYS:
                        ireq->i_val = 9; /* include home key */
                        break;
                case IEEE80211_IOC_WEPTXKEY:
                        /*
                         * For some strange reason, you have to read all
                         * keys before you can read the txkey.
                         */
                        AN_LOCK(sc);
                        sc->areq.an_type = AN_RID_WEP_TEMP;
                        for (i = 0; i < 5; i++) {
                                if (an_read_record(sc,
                                    (struct an_ltv_gen *) &sc->areq)) {
                                        error = EINVAL;
                                        break;
                                }
                                if (key->kindex == 0xffff) {
                                        break;
                                }
                                /* Required to get next entry */
                                sc->areq.an_type = AN_RID_WEP_PERM;
                        }
                        if (error != 0) {
                                AN_UNLOCK(sc);
                                break;
                        }

                        sc->areq.an_type = AN_RID_WEP_PERM;
                        key->kindex = 0xffff;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        ireq->i_val = key->mac[0];
                        /*
                         * Check for home mode.  Map home mode into
                         * 5th key since that is how it is stored on
                         * the card
                         */
                        sc->areq.an_len  = sizeof(struct an_ltv_genconfig);
                        sc->areq.an_type = AN_RID_GENCONFIG;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        if (config->an_home_product & AN_HOME_NETWORK)
                                ireq->i_val = 4;
                        AN_UNLOCK(sc);
                        break;
                case IEEE80211_IOC_AUTHMODE:
                        AN_LOCK(sc);
                        sc->areq.an_type = AN_RID_ACTUALCFG;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        AN_UNLOCK(sc);
                        if ((config->an_authtype & AN_AUTHTYPE_MASK) ==
                            AN_AUTHTYPE_NONE) {
                            ireq->i_val = IEEE80211_AUTH_NONE;
                        } else if ((config->an_authtype & AN_AUTHTYPE_MASK) ==
                            AN_AUTHTYPE_OPEN) {
                            ireq->i_val = IEEE80211_AUTH_OPEN;
                        } else if ((config->an_authtype & AN_AUTHTYPE_MASK) ==
                            AN_AUTHTYPE_SHAREDKEY) {
                            ireq->i_val = IEEE80211_AUTH_SHARED;
                        } else
                                error = EINVAL;
                        break;
                case IEEE80211_IOC_STATIONNAME:
                        AN_LOCK(sc);
                        sc->areq.an_type = AN_RID_ACTUALCFG;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        AN_UNLOCK(sc);
                        ireq->i_len = sizeof(config->an_nodename);
                        tmpptr = config->an_nodename;
                        bzero(tmpstr, IEEE80211_NWID_LEN);
                        bcopy(tmpptr, tmpstr, ireq->i_len);
                        error = copyout(tmpstr, ireq->i_data,
                            IEEE80211_NWID_LEN);
                        break;
                case IEEE80211_IOC_CHANNEL:
                        AN_LOCK(sc);
                        sc->areq.an_type = AN_RID_STATUS;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        AN_UNLOCK(sc);
                        ireq->i_val = status->an_cur_channel;
                        break;
                case IEEE80211_IOC_CURCHAN:
                        AN_LOCK(sc);
                        sc->areq.an_type = AN_RID_STATUS;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        AN_UNLOCK(sc);
                        bzero(&ch, sizeof(ch));
                        ch.ic_freq = ieee80211_ieee2mhz(status->an_cur_channel,
                            IEEE80211_CHAN_B);
                        ch.ic_flags = IEEE80211_CHAN_B;
                        ch.ic_ieee = status->an_cur_channel;
                        error = copyout(&ch, ireq->i_data, sizeof(ch));
                        break;
                case IEEE80211_IOC_POWERSAVE:
                        AN_LOCK(sc);
                        sc->areq.an_type = AN_RID_ACTUALCFG;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        AN_UNLOCK(sc);
                        if (config->an_psave_mode == AN_PSAVE_NONE) {
                                ireq->i_val = IEEE80211_POWERSAVE_OFF;
                        } else if (config->an_psave_mode == AN_PSAVE_CAM) {
                                ireq->i_val = IEEE80211_POWERSAVE_CAM;
                        } else if (config->an_psave_mode == AN_PSAVE_PSP) {
                                ireq->i_val = IEEE80211_POWERSAVE_PSP;
                        } else if (config->an_psave_mode == AN_PSAVE_PSP_CAM) {
                                ireq->i_val = IEEE80211_POWERSAVE_PSP_CAM;
                        } else
                                error = EINVAL;
                        break;
                case IEEE80211_IOC_POWERSAVESLEEP:
                        AN_LOCK(sc);
                        sc->areq.an_type = AN_RID_ACTUALCFG;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        AN_UNLOCK(sc);
                        ireq->i_val = config->an_listen_interval;
                        break;
                }
                break;
        case SIOCS80211:
                if ((error = priv_check(td, PRIV_NET80211_MANAGE)))
                        goto out;
                AN_LOCK(sc);
                sc->areq.an_len = sizeof(sc->areq);
                /*
                 * We need a config structure for everything but the WEP
                 * key management and SSIDs so we get it now so avoid
                 * duplicating this code every time.
                 */
                if (ireq->i_type != IEEE80211_IOC_SSID &&
                    ireq->i_type != IEEE80211_IOC_WEPKEY &&
                    ireq->i_type != IEEE80211_IOC_WEPTXKEY) {
                        sc->areq.an_type = AN_RID_GENCONFIG;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                }
                switch (ireq->i_type) {
                case IEEE80211_IOC_SSID:
                        sc->areq.an_len = sizeof(sc->areq);
                        sc->areq.an_type = AN_RID_SSIDLIST;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        if (ireq->i_len > IEEE80211_NWID_LEN) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        max = (sc->areq.an_len - 4)
                            / sizeof(struct an_ltv_ssid_entry);
                        if ( max > MAX_SSIDS ) {
                                printf("To many SSIDs only using "
                                    "%d of %d\n",
                                    MAX_SSIDS, max);
                                max = MAX_SSIDS;
                        }
                        if (ireq->i_val > max) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        } else {
                                error = copyin(ireq->i_data,
                                    ssids->an_entry[ireq->i_val].an_ssid,
                                    ireq->i_len);
                                ssids->an_entry[ireq->i_val].an_len
                                    = ireq->i_len;
                                sc->areq.an_len = sizeof(sc->areq);
                                sc->areq.an_type = AN_RID_SSIDLIST;
                                an_setdef(sc, &sc->areq);
                                AN_UNLOCK(sc);
                                break;
                        }
                        break;
                case IEEE80211_IOC_WEP:
                        switch (ireq->i_val) {
                        case IEEE80211_WEP_OFF:
                                config->an_authtype &=
                                    ~(AN_AUTHTYPE_PRIVACY_IN_USE |
                                    AN_AUTHTYPE_ALLOW_UNENCRYPTED);
                                break;
                        case IEEE80211_WEP_ON:
                                config->an_authtype |=
                                    AN_AUTHTYPE_PRIVACY_IN_USE;
                                config->an_authtype &=
                                    ~AN_AUTHTYPE_ALLOW_UNENCRYPTED;
                                break;
                        case IEEE80211_WEP_MIXED:
                                config->an_authtype |=
                                    AN_AUTHTYPE_PRIVACY_IN_USE |
                                    AN_AUTHTYPE_ALLOW_UNENCRYPTED;
                                break;
                        default:
                                error = EINVAL;
                                break;
                        }
                        if (error != EINVAL)
                                an_setdef(sc, &sc->areq);
                        AN_UNLOCK(sc);
                        break;
                case IEEE80211_IOC_WEPKEY:
                        if (ireq->i_val < 0 || ireq->i_val > 8 ||
                            ireq->i_len > 13) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        error = copyin(ireq->i_data, tmpstr, 13);
                        if (error != 0) {
                                AN_UNLOCK(sc);
                                break;
                        }
                        /*
                         * Map the 9th key into the home mode
                         * since that is how it is stored on
                         * the card
                         */
                        bzero(&sc->areq, sizeof(struct an_ltv_key));
                        sc->areq.an_len = sizeof(struct an_ltv_key);
                        key->mac[0] = 1;        /* The others are 0. */
                        if (ireq->i_val < 4) {
                                sc->areq.an_type = AN_RID_WEP_TEMP;
                                key->kindex = ireq->i_val;
                        } else {
                                sc->areq.an_type = AN_RID_WEP_PERM;
                                key->kindex = ireq->i_val - 4;
                        }
                        key->klen = ireq->i_len;
                        bcopy(tmpstr, key->key, key->klen);
                        an_setdef(sc, &sc->areq);
                        AN_UNLOCK(sc);
                        break;
                case IEEE80211_IOC_WEPTXKEY:
                        if (ireq->i_val < 0 || ireq->i_val > 4) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }

                        /*
                         * Map the 5th key into the home mode
                         * since that is how it is stored on
                         * the card
                         */
                        sc->areq.an_len  = sizeof(struct an_ltv_genconfig);
                        sc->areq.an_type = AN_RID_ACTUALCFG;
                        if (an_read_record(sc,
                            (struct an_ltv_gen *)&sc->areq)) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        if (ireq->i_val ==  4) {
                                config->an_home_product |= AN_HOME_NETWORK;
                                ireq->i_val = 0;
                        } else {
                                config->an_home_product &= ~AN_HOME_NETWORK;
                        }

                        sc->an_config.an_home_product
                                = config->an_home_product;

                        /* update configuration */
                        an_init_locked(sc);

                        bzero(&sc->areq, sizeof(struct an_ltv_key));
                        sc->areq.an_len = sizeof(struct an_ltv_key);
                        sc->areq.an_type = AN_RID_WEP_PERM;
                        key->kindex = 0xffff;
                        key->mac[0] = ireq->i_val;
                        an_setdef(sc, &sc->areq);
                        AN_UNLOCK(sc);
                        break;
                case IEEE80211_IOC_AUTHMODE:
                        switch (ireq->i_val) {
                        case IEEE80211_AUTH_NONE:
                                config->an_authtype = AN_AUTHTYPE_NONE |
                                    (config->an_authtype & ~AN_AUTHTYPE_MASK);
                                break;
                        case IEEE80211_AUTH_OPEN:
                                config->an_authtype = AN_AUTHTYPE_OPEN |
                                    (config->an_authtype & ~AN_AUTHTYPE_MASK);
                                break;
                        case IEEE80211_AUTH_SHARED:
                                config->an_authtype = AN_AUTHTYPE_SHAREDKEY |
                                    (config->an_authtype & ~AN_AUTHTYPE_MASK);
                                break;
                        default:
                                error = EINVAL;
                        }
                        if (error != EINVAL) {
                                an_setdef(sc, &sc->areq);
                        }
                        AN_UNLOCK(sc);
                        break;
                case IEEE80211_IOC_STATIONNAME:
                        if (ireq->i_len > 16) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        bzero(config->an_nodename, 16);
                        error = copyin(ireq->i_data,
                            config->an_nodename, ireq->i_len);
                        an_setdef(sc, &sc->areq);
                        AN_UNLOCK(sc);
                        break;
                case IEEE80211_IOC_CHANNEL:
                        /*
                         * The actual range is 1-14, but if you set it
                         * to 0 you get the default so we let that work
                         * too.
                         */
                        if (ireq->i_val < 0 || ireq->i_val >14) {
                                error = EINVAL;
                                AN_UNLOCK(sc);
                                break;
                        }
                        config->an_ds_channel = ireq->i_val;
                        an_setdef(sc, &sc->areq);
                        AN_UNLOCK(sc);
                        break;
                case IEEE80211_IOC_POWERSAVE:
                        switch (ireq->i_val) {
                        case IEEE80211_POWERSAVE_OFF:
                                config->an_psave_mode = AN_PSAVE_NONE;
                                break;
                        case IEEE80211_POWERSAVE_CAM:
                                config->an_psave_mode = AN_PSAVE_CAM;
                                break;
                        case IEEE80211_POWERSAVE_PSP:
                                config->an_psave_mode = AN_PSAVE_PSP;
                                break;
                        case IEEE80211_POWERSAVE_PSP_CAM:
                                config->an_psave_mode = AN_PSAVE_PSP_CAM;
                                break;
                        default:
                                error = EINVAL;
                                break;
                        }
                        an_setdef(sc, &sc->areq);
                        AN_UNLOCK(sc);
                        break;
                case IEEE80211_IOC_POWERSAVESLEEP:
                        config->an_listen_interval = ireq->i_val;
                        an_setdef(sc, &sc->areq);
                        AN_UNLOCK(sc);
                        break;
                default:
                        AN_UNLOCK(sc);
                        break;
                }

                /*
                if (!error) {
                        AN_LOCK(sc);
                        an_setdef(sc, &sc->areq);
                        AN_UNLOCK(sc);
                }
                */
                break;
        default:
                error = ether_ioctl(ifp, command, data);
                break;
        }
out:

        return(error != 0);
}

static int
an_init_tx_ring(struct an_softc *sc)
{
        int                     i;
        int                     id;

        if (sc->an_gone)
                return (0);

        if (!sc->mpi350) {
                for (i = 0; i < AN_TX_RING_CNT; i++) {
                        if (an_alloc_nicmem(sc, 1518 +
                            0x44, &id))
                                return(ENOMEM);
                        sc->an_rdata.an_tx_fids[i] = id;
                        sc->an_rdata.an_tx_ring[i] = 0;
                }
        }

        sc->an_rdata.an_tx_prod = 0;
        sc->an_rdata.an_tx_cons = 0;
        sc->an_rdata.an_tx_empty = 1;

        return(0);
}

static void
an_init(void *xsc)
{
        struct an_softc         *sc = xsc;

        AN_LOCK(sc);
        an_init_locked(sc);
        AN_UNLOCK(sc);
}

static void
an_init_locked(struct an_softc *sc)
{
        struct ifnet *ifp;

        AN_LOCK_ASSERT(sc);
        ifp = sc->an_ifp;
        if (sc->an_gone)
                return;

        if (ifp->if_drv_flags & IFF_DRV_RUNNING)
                an_stop(sc);

        sc->an_associated = 0;

        /* Allocate the TX buffers */
        if (an_init_tx_ring(sc)) {
                an_reset(sc);
                if (sc->mpi350)
                        an_init_mpi350_desc(sc);
                if (an_init_tx_ring(sc)) {
                        if_printf(ifp, "tx buffer allocation failed\n");
                        return;
                }
        }

        /* Set our MAC address. */
        bcopy((char *)IF_LLADDR(sc->an_ifp),
            (char *)&sc->an_config.an_macaddr, ETHER_ADDR_LEN);

        if (ifp->if_flags & IFF_BROADCAST)
                sc->an_config.an_rxmode = AN_RXMODE_BC_ADDR;
        else
                sc->an_config.an_rxmode = AN_RXMODE_ADDR;

        if (ifp->if_flags & IFF_MULTICAST)
                sc->an_config.an_rxmode = AN_RXMODE_BC_MC_ADDR;

        if (ifp->if_flags & IFF_PROMISC) {
                if (sc->an_monitor & AN_MONITOR) {
                        if (sc->an_monitor & AN_MONITOR_ANY_BSS) {
                                sc->an_config.an_rxmode |=
                                    AN_RXMODE_80211_MONITOR_ANYBSS |
                                    AN_RXMODE_NO_8023_HEADER;
                        } else {
                                sc->an_config.an_rxmode |=
                                    AN_RXMODE_80211_MONITOR_CURBSS |
                                    AN_RXMODE_NO_8023_HEADER;
                        }
                }
        }

#ifdef ANCACHE
        if (sc->an_have_rssimap)
                sc->an_config.an_rxmode |= AN_RXMODE_NORMALIZED_RSSI;
#endif

        /* Set the ssid list */
        sc->an_ssidlist.an_type = AN_RID_SSIDLIST;
        sc->an_ssidlist.an_len = sizeof(struct an_ltv_ssidlist_new);
        if (an_write_record(sc, (struct an_ltv_gen *)&sc->an_ssidlist)) {
                if_printf(ifp, "failed to set ssid list\n");
                return;
        }

        /* Set the AP list */
        sc->an_aplist.an_type = AN_RID_APLIST;
        sc->an_aplist.an_len = sizeof(struct an_ltv_aplist);
        if (an_write_record(sc, (struct an_ltv_gen *)&sc->an_aplist)) {
                if_printf(ifp, "failed to set AP list\n");
                return;
        }

        /* Set the configuration in the NIC */
        sc->an_config.an_len = sizeof(struct an_ltv_genconfig);
        sc->an_config.an_type = AN_RID_GENCONFIG;
        if (an_write_record(sc, (struct an_ltv_gen *)&sc->an_config)) {
                if_printf(ifp, "failed to set configuration\n");
                return;
        }

        /* Enable the MAC */
        if (an_cmd(sc, AN_CMD_ENABLE, 0)) {
                if_printf(ifp, "failed to enable MAC\n");
                return;
        }

        if (ifp->if_flags & IFF_PROMISC)
                an_cmd(sc, AN_CMD_SET_MODE, 0xffff);

        /* enable interrupts */
        CSR_WRITE_2(sc, AN_INT_EN(sc->mpi350), AN_INTRS(sc->mpi350));

        ifp->if_drv_flags |= IFF_DRV_RUNNING;
        ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;

        callout_reset(&sc->an_stat_ch, hz, an_stats_update, sc);

        return;
}

static void
an_start(struct ifnet *ifp)
{
        struct an_softc         *sc;

        sc = ifp->if_softc;
        AN_LOCK(sc);
        an_start_locked(ifp);
        AN_UNLOCK(sc);
}

static void
an_start_locked(struct ifnet *ifp)
{
        struct an_softc         *sc;
        struct mbuf             *m0 = NULL;
        struct an_txframe_802_3 tx_frame_802_3;
        struct ether_header     *eh;
        int                     id, idx, i;
        unsigned char           txcontrol;
        struct an_card_tx_desc an_tx_desc;
        u_int8_t                *buf;

        sc = ifp->if_softc;

        AN_LOCK_ASSERT(sc);
        if (sc->an_gone)
                return;

        if (ifp->if_drv_flags & IFF_DRV_OACTIVE)
                return;

        if (!sc->an_associated)
                return;

        /* We can't send in monitor mode so toss any attempts. */
        if (sc->an_monitor && (ifp->if_flags & IFF_PROMISC)) {
                for (;;) {
                        IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
                        if (m0 == NULL)
                                break;
                        m_freem(m0);
                }
                return;
        }

        idx = sc->an_rdata.an_tx_prod;

        if (!sc->mpi350) {
                bzero((char *)&tx_frame_802_3, sizeof(tx_frame_802_3));

                while (sc->an_rdata.an_tx_ring[idx] == 0) {
                        IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
                        if (m0 == NULL)
                                break;

                        id = sc->an_rdata.an_tx_fids[idx];
                        eh = mtod(m0, struct ether_header *);

                        bcopy((char *)&eh->ether_dhost,
                              (char *)&tx_frame_802_3.an_tx_dst_addr,
                              ETHER_ADDR_LEN);
                        bcopy((char *)&eh->ether_shost,
                              (char *)&tx_frame_802_3.an_tx_src_addr,
                              ETHER_ADDR_LEN);

                        /* minus src/dest mac & type */
                        tx_frame_802_3.an_tx_802_3_payload_len =
                                m0->m_pkthdr.len - 12;

                        m_copydata(m0, sizeof(struct ether_header) - 2 ,
                                   tx_frame_802_3.an_tx_802_3_payload_len,
                                   (caddr_t)&sc->an_txbuf);

                        txcontrol = AN_TXCTL_8023 | AN_TXCTL_HW(sc->mpi350);
                        /* write the txcontrol only */
                        an_write_data(sc, id, 0x08, (caddr_t)&txcontrol,
                                      sizeof(txcontrol));

                        /* 802_3 header */
                        an_write_data(sc, id, 0x34, (caddr_t)&tx_frame_802_3,
                                      sizeof(struct an_txframe_802_3));

                        /* in mbuf header type is just before payload */
                        an_write_data(sc, id, 0x44, (caddr_t)&sc->an_txbuf,
                                      tx_frame_802_3.an_tx_802_3_payload_len);

                        /*
                         * If there's a BPF listner, bounce a copy of
                         * this frame to him.
                         */
                        BPF_MTAP(ifp, m0);

                        m_freem(m0);
                        m0 = NULL;

                        sc->an_rdata.an_tx_ring[idx] = id;
                        if (an_cmd(sc, AN_CMD_TX, id))
                                if_printf(ifp, "xmit failed\n");

                        AN_INC(idx, AN_TX_RING_CNT);

                        /*
                         * Set a timeout in case the chip goes out to lunch.
                         */
                        sc->an_timer = 5;
                }
        } else { /* MPI-350 */
                /* Disable interrupts. */
                CSR_WRITE_2(sc, AN_INT_EN(sc->mpi350), 0);

                while (sc->an_rdata.an_tx_empty ||
                    idx != sc->an_rdata.an_tx_cons) {
                        IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
                        if (m0 == NULL) {
                                break;
                        }
                        buf = sc->an_tx_buffer[idx].an_dma_vaddr;

                        eh = mtod(m0, struct ether_header *);

                        /* DJA optimize this to limit bcopy */
                        bcopy((char *)&eh->ether_dhost,
                              (char *)&tx_frame_802_3.an_tx_dst_addr,
                              ETHER_ADDR_LEN);
                        bcopy((char *)&eh->ether_shost,
                              (char *)&tx_frame_802_3.an_tx_src_addr,
                              ETHER_ADDR_LEN);

                        /* minus src/dest mac & type */
                        tx_frame_802_3.an_tx_802_3_payload_len =
                                m0->m_pkthdr.len - 12;

                        m_copydata(m0, sizeof(struct ether_header) - 2 ,
                                   tx_frame_802_3.an_tx_802_3_payload_len,
                                   (caddr_t)&sc->an_txbuf);

                        txcontrol = AN_TXCTL_8023 | AN_TXCTL_HW(sc->mpi350);
                        /* write the txcontrol only */
                        bcopy((caddr_t)&txcontrol, &buf[0x08],
                              sizeof(txcontrol));

                        /* 802_3 header */
                        bcopy((caddr_t)&tx_frame_802_3, &buf[0x34],
                              sizeof(struct an_txframe_802_3));

                        /* in mbuf header type is just before payload */
                        bcopy((caddr_t)&sc->an_txbuf, &buf[0x44],
                              tx_frame_802_3.an_tx_802_3_payload_len);

                        bzero(&an_tx_desc, sizeof(an_tx_desc));
                        an_tx_desc.an_offset = 0;
                        an_tx_desc.an_eoc = 1;
                        an_tx_desc.an_valid = 1;
                        an_tx_desc.an_len =  0x44 +
                            tx_frame_802_3.an_tx_802_3_payload_len;
                        an_tx_desc.an_phys
                            = sc->an_tx_buffer[idx].an_dma_paddr;
                        for (i = sizeof(an_tx_desc) / 4 - 1; i >= 0; i--) {
                                CSR_MEM_AUX_WRITE_4(sc, AN_TX_DESC_OFFSET
                                    /* zero for now */
                                    + (0 * sizeof(an_tx_desc))
                                    + (i * 4),
                                    ((u_int32_t *)(void *)&an_tx_desc)[i]);
                        }

                        /*
                         * If there's a BPF listner, bounce a copy of
                         * this frame to him.
                         */
                        BPF_MTAP(ifp, m0);

                        m_freem(m0);
                        m0 = NULL;
                        AN_INC(idx, AN_MAX_TX_DESC);
                        sc->an_rdata.an_tx_empty = 0;
                        CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350), AN_EV_ALLOC);

                        /*
                         * Set a timeout in case the chip goes out to lunch.
                         */
                        sc->an_timer = 5;
                }

                /* Re-enable interrupts. */
                CSR_WRITE_2(sc, AN_INT_EN(sc->mpi350), AN_INTRS(sc->mpi350));
        }

        if (m0 != NULL)
                ifp->if_drv_flags |= IFF_DRV_OACTIVE;

        sc->an_rdata.an_tx_prod = idx;

        return;
}

void
an_stop(struct an_softc *sc)
{
        struct ifnet            *ifp;
        int                     i;

        AN_LOCK_ASSERT(sc);

        if (sc->an_gone)
                return;

        ifp = sc->an_ifp;

        an_cmd(sc, AN_CMD_FORCE_SYNCLOSS, 0);
        CSR_WRITE_2(sc, AN_INT_EN(sc->mpi350), 0);
        an_cmd(sc, AN_CMD_DISABLE, 0);

        for (i = 0; i < AN_TX_RING_CNT; i++)
                an_cmd(sc, AN_CMD_DEALLOC_MEM, sc->an_rdata.an_tx_fids[i]);

        callout_stop(&sc->an_stat_ch);

        ifp->if_drv_flags &= ~(IFF_DRV_RUNNING|IFF_DRV_OACTIVE);

        if (sc->an_flash_buffer) {
                free(sc->an_flash_buffer, M_DEVBUF);
                sc->an_flash_buffer = NULL;
        }
}

static void
an_watchdog(struct an_softc *sc)
{
        struct ifnet *ifp;

        AN_LOCK_ASSERT(sc);

        if (sc->an_gone)
                return;

        ifp = sc->an_ifp;
        if_printf(ifp, "device timeout\n");

        an_reset(sc);
        if (sc->mpi350)
                an_init_mpi350_desc(sc);
        an_init_locked(sc);

        if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
}

int
an_shutdown(device_t dev)
{
        struct an_softc         *sc;

        sc = device_get_softc(dev);
        AN_LOCK(sc);
        an_stop(sc);
        sc->an_gone = 1;
        AN_UNLOCK(sc);

        return (0);
}

void
an_resume(device_t dev)
{
        struct an_softc         *sc;
        struct ifnet            *ifp;
        int                     i;

        sc = device_get_softc(dev);
        AN_LOCK(sc);
        ifp = sc->an_ifp;

        sc->an_gone = 0;
        an_reset(sc);
        if (sc->mpi350)
                an_init_mpi350_desc(sc);
        an_init_locked(sc);

        /* Recovery temporary keys */
        for (i = 0; i < 4; i++) {
                sc->areq.an_type = AN_RID_WEP_TEMP;
                sc->areq.an_len = sizeof(struct an_ltv_key);
                bcopy(&sc->an_temp_keys[i],
                    &sc->areq, sizeof(struct an_ltv_key));
                an_setdef(sc, &sc->areq);
        }

        if (ifp->if_flags & IFF_UP)
                an_start_locked(ifp);
        AN_UNLOCK(sc);

        return;
}

#ifdef ANCACHE
/* Aironet signal strength cache code.
 * store signal/noise/quality on per MAC src basis in
 * a small fixed cache.  The cache wraps if > MAX slots
 * used.  The cache may be zeroed out to start over.
 * Two simple filters exist to reduce computation:
 * 1. ip only (literally 0x800, ETHERTYPE_IP) which may be used
 * to ignore some packets.  It defaults to ip only.
 * it could be used to focus on broadcast, non-IP 802.11 beacons.
 * 2. multicast/broadcast only.  This may be used to
 * ignore unicast packets and only cache signal strength
 * for multicast/broadcast packets (beacons); e.g., Mobile-IP
 * beacons and not unicast traffic.
 *
 * The cache stores (MAC src(index), IP src (major clue), signal,
 *      quality, noise)
 *
 * No apologies for storing IP src here.  It's easy and saves much
 * trouble elsewhere.  The cache is assumed to be INET dependent,
 * although it need not be.
 *
 * Note: the Aironet only has a single byte of signal strength value
 * in the rx frame header, and it's not scaled to anything sensible.
 * This is kind of lame, but it's all we've got.
 */

#ifdef documentation

int an_sigitems;                                /* number of cached entries */
struct an_sigcache an_sigcache[MAXANCACHE];     /* array of cache entries */
int an_nextitem;                                /* index/# of entries */

#endif

/* control variables for cache filtering.  Basic idea is
 * to reduce cost (e.g., to only Mobile-IP agent beacons
 * which are broadcast or multicast).  Still you might
 * want to measure signal strength anth unicast ping packets
 * on a pt. to pt. ant. setup.
 */
/* set true if you want to limit cache items to broadcast/mcast
 * only packets (not unicast).  Useful for mobile-ip beacons which
 * are broadcast/multicast at network layer.  Default is all packets
 * so ping/unicast anll work say anth pt. to pt. antennae setup.
 */
static int an_cache_mcastonly = 0;
SYSCTL_INT(_hw_an, OID_AUTO, an_cache_mcastonly, CTLFLAG_RW,
        &an_cache_mcastonly, 0, "");

/* set true if you want to limit cache items to IP packets only
*/
static int an_cache_iponly = 1;
SYSCTL_INT(_hw_an, OID_AUTO, an_cache_iponly, CTLFLAG_RW,
        &an_cache_iponly, 0, "");

/*
 * an_cache_store, per rx packet store signal
 * strength in MAC (src) indexed cache.
 */
static void
an_cache_store(struct an_softc *sc, struct ether_header *eh, struct mbuf *m,
    u_int8_t rx_rssi, u_int8_t rx_quality)
{
        struct ip *ip = NULL;
        int i;
        static int cache_slot = 0;      /* use this cache entry */
        static int wrapindex = 0;       /* next "free" cache entry */
        int type_ipv4 = 0;

        /* filters:
         * 1. ip only
         * 2. configurable filter to throw out unicast packets,
         * keep multicast only.
         */

        if ((ntohs(eh->ether_type) == ETHERTYPE_IP)) {
                type_ipv4 = 1;
        }

        /* filter for ip packets only
        */
        if ( an_cache_iponly && !type_ipv4) {
                return;
        }

        /* filter for broadcast/multicast only
         */
        if (an_cache_mcastonly && ((eh->ether_dhost[0] & 1) == 0)) {
                return;
        }

#ifdef SIGDEBUG
        if_printf(sc->an_ifp, "q value %x (MSB=0x%x, LSB=0x%x) \n",
                rx_rssi & 0xffff, rx_rssi >> 8, rx_rssi & 0xff);
#endif

        /* find the ip header.  we want to store the ip_src
         * address.
         */
        if (type_ipv4) {
                ip = mtod(m, struct ip *);
        }

        /* do a linear search for a matching MAC address
         * in the cache table
         * . MAC address is 6 bytes,
         * . var w_nextitem holds total number of entries already cached
         */
        for (i = 0; i < sc->an_nextitem; i++) {
                if (! bcmp(eh->ether_shost , sc->an_sigcache[i].macsrc,  6 )) {
                        /* Match!,
                         * so we already have this entry,
                         * update the data
                         */
                        break;
                }
        }

        /* did we find a matching mac address?
         * if yes, then overwrite a previously existing cache entry
         */
        if (i < sc->an_nextitem )   {
                cache_slot = i;
        }
        /* else, have a new address entry,so
         * add this new entry,
         * if table full, then we need to replace LRU entry
         */
        else    {
                /* check for space in cache table
                 * note: an_nextitem also holds number of entries
                 * added in the cache table
                 */
                if ( sc->an_nextitem < MAXANCACHE ) {
                        cache_slot = sc->an_nextitem;
                        sc->an_nextitem++;
                        sc->an_sigitems = sc->an_nextitem;
                }
                /* no space found, so simply wrap anth wrap index
                 * and "zap" the next entry
                 */
                else {
                        if (wrapindex == MAXANCACHE) {
                                wrapindex = 0;
                        }
                        cache_slot = wrapindex++;
                }
        }

        /* invariant: cache_slot now points at some slot
         * in cache.
         */
        if (cache_slot < 0 || cache_slot >= MAXANCACHE) {
                log(LOG_ERR, "an_cache_store, bad index: %d of "
                    "[0..%d], gross cache error\n",
                    cache_slot, MAXANCACHE);
                return;
        }

        /*  store items in cache
         *  .ip source address
         *  .mac src
         *  .signal, etc.
         */
        if (type_ipv4) {
                sc->an_sigcache[cache_slot].ipsrc = ip->ip_src.s_addr;
        }
        bcopy( eh->ether_shost, sc->an_sigcache[cache_slot].macsrc,  6);

        switch (an_cache_mode) {
        case DBM:
                if (sc->an_have_rssimap) {
                        sc->an_sigcache[cache_slot].signal =
                                - sc->an_rssimap.an_entries[rx_rssi].an_rss_dbm;
                        sc->an_sigcache[cache_slot].quality =
                                - sc->an_rssimap.an_entries[rx_quality].an_rss_dbm;
                } else {
                        sc->an_sigcache[cache_slot].signal = rx_rssi - 100;
                        sc->an_sigcache[cache_slot].quality = rx_quality - 100;
                }
                break;
        case PERCENT:
                if (sc->an_have_rssimap) {
                        sc->an_sigcache[cache_slot].signal =
                                sc->an_rssimap.an_entries[rx_rssi].an_rss_pct;
                        sc->an_sigcache[cache_slot].quality =
                                sc->an_rssimap.an_entries[rx_quality].an_rss_pct;
                } else {
                        if (rx_rssi > 100)
                                rx_rssi = 100;
                        if (rx_quality > 100)
                                rx_quality = 100;
                        sc->an_sigcache[cache_slot].signal = rx_rssi;
                        sc->an_sigcache[cache_slot].quality = rx_quality;
                }
                break;
        case RAW:
                sc->an_sigcache[cache_slot].signal = rx_rssi;
                sc->an_sigcache[cache_slot].quality = rx_quality;
                break;
        }

        sc->an_sigcache[cache_slot].noise = 0;

        return;
}
#endif

static int
an_media_change(struct ifnet *ifp)
{
        struct an_softc *sc = ifp->if_softc;
        struct an_ltv_genconfig *cfg;
        int otype = sc->an_config.an_opmode;
        int orate = sc->an_tx_rate;

        AN_LOCK(sc);
        sc->an_tx_rate = ieee80211_media2rate(
                IFM_SUBTYPE(sc->an_ifmedia.ifm_cur->ifm_media));
        if (sc->an_tx_rate < 0)
                sc->an_tx_rate = 0;

        if (orate != sc->an_tx_rate) {
                /* Read the current configuration */
                sc->an_config.an_type = AN_RID_GENCONFIG;
                sc->an_config.an_len = sizeof(struct an_ltv_genconfig);
                an_read_record(sc, (struct an_ltv_gen *)&sc->an_config);
                cfg = &sc->an_config;

                /* clear other rates and set the only one we want */
                bzero(cfg->an_rates, sizeof(cfg->an_rates));
                cfg->an_rates[0] = sc->an_tx_rate;

                /* Save the new rate */
                sc->an_config.an_type = AN_RID_GENCONFIG;
                sc->an_config.an_len = sizeof(struct an_ltv_genconfig);
        }

        if ((sc->an_ifmedia.ifm_cur->ifm_media & IFM_IEEE80211_ADHOC) != 0)
                sc->an_config.an_opmode &= ~AN_OPMODE_INFRASTRUCTURE_STATION;
        else
                sc->an_config.an_opmode |= AN_OPMODE_INFRASTRUCTURE_STATION;

        if (otype != sc->an_config.an_opmode ||
            orate != sc->an_tx_rate)
                an_init_locked(sc);
        AN_UNLOCK(sc);

        return(0);
}

static void
an_media_status(struct ifnet *ifp, struct ifmediareq *imr)
{
        struct an_ltv_status    status;
        struct an_softc         *sc = ifp->if_softc;

        imr->ifm_active = IFM_IEEE80211;

        AN_LOCK(sc);
        status.an_len = sizeof(status);
        status.an_type = AN_RID_STATUS;
        if (an_read_record(sc, (struct an_ltv_gen *)&status)) {
                /* If the status read fails, just lie. */
                imr->ifm_active = sc->an_ifmedia.ifm_cur->ifm_media;
                imr->ifm_status = IFM_AVALID|IFM_ACTIVE;
        }

        if (sc->an_tx_rate == 0) {
                imr->ifm_active = IFM_IEEE80211|IFM_AUTO;
        }

        if (sc->an_config.an_opmode == AN_OPMODE_IBSS_ADHOC)
                imr->ifm_active |= IFM_IEEE80211_ADHOC;
        imr->ifm_active |= ieee80211_rate2media(NULL,
                status.an_current_tx_rate, IEEE80211_MODE_AUTO);
        imr->ifm_status = IFM_AVALID;
        if (status.an_opmode & AN_STATUS_OPMODE_ASSOCIATED)
                imr->ifm_status |= IFM_ACTIVE;
        AN_UNLOCK(sc);
}

/********************** Cisco utility support routines *************/

/*
 * ReadRids & WriteRids derived from Cisco driver additions to Ben Reed's
 * Linux driver
 */

static int
readrids(struct ifnet *ifp, struct aironet_ioctl *l_ioctl)
{
        unsigned short  rid;
        struct an_softc *sc;
        int error;

        switch (l_ioctl->command) {
        case AIROGCAP:
                rid = AN_RID_CAPABILITIES;
                break;
        case AIROGCFG:
                rid = AN_RID_GENCONFIG;
                break;
        case AIROGSLIST:
                rid = AN_RID_SSIDLIST;
                break;
        case AIROGVLIST:
                rid = AN_RID_APLIST;
                break;
        case AIROGDRVNAM:
                rid = AN_RID_DRVNAME;
                break;
        case AIROGEHTENC:
                rid = AN_RID_ENCAPPROTO;
                break;
        case AIROGWEPKTMP:
                rid = AN_RID_WEP_TEMP;
                break;
        case AIROGWEPKNV:
                rid = AN_RID_WEP_PERM;
                break;
        case AIROGSTAT:
                rid = AN_RID_STATUS;
                break;
        case AIROGSTATSD32:
                rid = AN_RID_32BITS_DELTA;
                break;
        case AIROGSTATSC32:
                rid = AN_RID_32BITS_CUM;
                break;
        default:
                rid = 999;
                break;
        }

        if (rid == 999) /* Is bad command */
                return -EINVAL;

        sc = ifp->if_softc;
        sc->areq.an_len  = AN_MAX_DATALEN;
        sc->areq.an_type = rid;

        an_read_record(sc, (struct an_ltv_gen *)&sc->areq);

        l_ioctl->len = sc->areq.an_len - 4;     /* just data */

        AN_UNLOCK(sc);
        /* the data contains the length at first */
        if (copyout(&(sc->areq.an_len), l_ioctl->data,
                    sizeof(sc->areq.an_len))) {
                error = -EFAULT;
                goto lock_exit;
        }
        /* Just copy the data back */
        if (copyout(&(sc->areq.an_val), l_ioctl->data + 2,
                    l_ioctl->len)) {
                error = -EFAULT;
                goto lock_exit;
        }
        error = 0;
lock_exit:
        AN_LOCK(sc);
        return (error);
}

static int
writerids(struct ifnet *ifp, struct aironet_ioctl *l_ioctl)
{
        struct an_softc *sc;
        int             rid, command, error;

        sc = ifp->if_softc;
        AN_LOCK_ASSERT(sc);
        rid = 0;
        command = l_ioctl->command;

        switch (command) {
        case AIROPSIDS:
                rid = AN_RID_SSIDLIST;
                break;
        case AIROPCAP:
                rid = AN_RID_CAPABILITIES;
                break;
        case AIROPAPLIST:
                rid = AN_RID_APLIST;
                break;
        case AIROPCFG:
                rid = AN_RID_GENCONFIG;
                break;
        case AIROPMACON:
                an_cmd(sc, AN_CMD_ENABLE, 0);
                return 0;
                break;
        case AIROPMACOFF:
                an_cmd(sc, AN_CMD_DISABLE, 0);
                return 0;
                break;
        case AIROPSTCLR:
                /*
                 * This command merely clears the counts does not actually
                 * store any data only reads rid. But as it changes the cards
                 * state, I put it in the writerid routines.
                 */

                rid = AN_RID_32BITS_DELTACLR;
                sc = ifp->if_softc;
                sc->areq.an_len = AN_MAX_DATALEN;
                sc->areq.an_type = rid;

                an_read_record(sc, (struct an_ltv_gen *)&sc->areq);
                l_ioctl->len = sc->areq.an_len - 4;     /* just data */

                AN_UNLOCK(sc);
                /* the data contains the length at first */
                error = copyout(&(sc->areq.an_len), l_ioctl->data,
                            sizeof(sc->areq.an_len));
                if (error) {
                        AN_LOCK(sc);
                        return -EFAULT;
                }
                /* Just copy the data */
                error = copyout(&(sc->areq.an_val), l_ioctl->data + 2,
                            l_ioctl->len);
                AN_LOCK(sc);
                if (error)
                        return -EFAULT;
                return 0;
                break;
        case AIROPWEPKEY:
                rid = AN_RID_WEP_TEMP;
                break;
        case AIROPWEPKEYNV:
                rid = AN_RID_WEP_PERM;
                break;
        case AIROPLEAPUSR:
                rid = AN_RID_LEAPUSERNAME;
                break;
        case AIROPLEAPPWD:
                rid = AN_RID_LEAPPASSWORD;
                break;
        default:
                return -EOPNOTSUPP;
        }

        if (rid) {
                if (l_ioctl->len > sizeof(sc->areq.an_val) + 4)
                        return -EINVAL;
                sc->areq.an_len = l_ioctl->len + 4;     /* add type & length */
                sc->areq.an_type = rid;

                /* Just copy the data back */
                AN_UNLOCK(sc);
                error = copyin((l_ioctl->data) + 2, &sc->areq.an_val,
                       l_ioctl->len);
                AN_LOCK(sc);
                if (error)
                        return -EFAULT;

                an_cmd(sc, AN_CMD_DISABLE, 0);
                an_write_record(sc, (struct an_ltv_gen *)&sc->areq);
                an_cmd(sc, AN_CMD_ENABLE, 0);
                return 0;
        }
        return -EOPNOTSUPP;
}

/*
 * General Flash utilities derived from Cisco driver additions to Ben Reed's
 * Linux driver
 */

#define FLASH_DELAY(_sc, x)     msleep(ifp, &(_sc)->an_mtx, PZERO, \
        "flash", ((x) / hz) + 1);
#define FLASH_COMMAND   0x7e7e
#define FLASH_SIZE      32 * 1024

static int
unstickbusy(struct ifnet *ifp)
{
        struct an_softc *sc = ifp->if_softc;

        if (CSR_READ_2(sc, AN_COMMAND(sc->mpi350)) & AN_CMD_BUSY) {
                CSR_WRITE_2(sc, AN_EVENT_ACK(sc->mpi350),
                            AN_EV_CLR_STUCK_BUSY);
                return 1;
        }
        return 0;
}

/*
 * Wait for busy completion from card wait for delay uSec's Return true for
 * success meaning command reg is clear
 */

static int
WaitBusy(struct ifnet *ifp, int uSec)
{
        int             statword = 0xffff;
        int             delay = 0;
        struct an_softc *sc = ifp->if_softc;

        while ((statword & AN_CMD_BUSY) && delay <= (1000 * 100)) {
                FLASH_DELAY(sc, 10);
                delay += 10;
                statword = CSR_READ_2(sc, AN_COMMAND(sc->mpi350));

                if ((AN_CMD_BUSY & statword) && (delay % 200)) {
                        unstickbusy(ifp);
                }
        }

        return 0 == (AN_CMD_BUSY & statword);
}

/*
 * STEP 1) Disable MAC and do soft reset on card.
 */

static int
cmdreset(struct ifnet *ifp)
{
        int             status;
        struct an_softc *sc = ifp->if_softc;

        AN_LOCK(sc);
        an_stop(sc);

        an_cmd(sc, AN_CMD_DISABLE, 0);

        if (!(status = WaitBusy(ifp, AN_TIMEOUT))) {
                if_printf(ifp, "Waitbusy hang b4 RESET =%d\n", status);
                AN_UNLOCK(sc);
                return -EBUSY;
        }
        CSR_WRITE_2(sc, AN_COMMAND(sc->mpi350), AN_CMD_FW_RESTART);

        FLASH_DELAY(sc, 1000);  /* WAS 600 12/7/00 */

        if (!(status = WaitBusy(ifp, 100))) {
                if_printf(ifp, "Waitbusy hang AFTER RESET =%d\n", status);
                AN_UNLOCK(sc);
                return -EBUSY;
        }
        AN_UNLOCK(sc);
        return 0;
}

/*
 * STEP 2) Put the card in legendary flash mode
 */

static int
setflashmode(struct ifnet *ifp)
{
        int             status;
        struct an_softc *sc = ifp->if_softc;

        CSR_WRITE_2(sc, AN_SW0(sc->mpi350), FLASH_COMMAND);
        CSR_WRITE_2(sc, AN_SW1(sc->mpi350), FLASH_COMMAND);
        CSR_WRITE_2(sc, AN_SW0(sc->mpi350), FLASH_COMMAND);
        CSR_WRITE_2(sc, AN_COMMAND(sc->mpi350), FLASH_COMMAND);

        /*
         * mdelay(500); // 500ms delay
         */

        FLASH_DELAY(sc, 500);

        if (!(status = WaitBusy(ifp, AN_TIMEOUT))) {
                printf("Waitbusy hang after setflash mode\n");
                return -EIO;
        }
        return 0;
}

/*
 * Get a character from the card matching matchbyte Step 3)
 */

static int
flashgchar(struct ifnet *ifp, int matchbyte, int dwelltime)
{
        int             rchar;
        unsigned char   rbyte = 0;
        int             success = -1;
        struct an_softc *sc = ifp->if_softc;

        do {
                rchar = CSR_READ_2(sc, AN_SW1(sc->mpi350));

                if (dwelltime && !(0x8000 & rchar)) {
                        dwelltime -= 10;
                        FLASH_DELAY(sc, 10);
                        continue;
                }
                rbyte = 0xff & rchar;

                if ((rbyte == matchbyte) && (0x8000 & rchar)) {
                        CSR_WRITE_2(sc, AN_SW1(sc->mpi350), 0);
                        success = 1;
                        break;
                }
                if (rbyte == 0x81 || rbyte == 0x82 || rbyte == 0x83 || rbyte == 0x1a || 0xffff == rchar)
                        break;
                CSR_WRITE_2(sc, AN_SW1(sc->mpi350), 0);

        } while (dwelltime > 0);
        return success;
}

/*
 * Put character to SWS0 wait for dwelltime x 50us for  echo .
 */

static int
flashpchar(struct ifnet *ifp, int byte, int dwelltime)
{
        int             echo;
        int             pollbusy, waittime;
        struct an_softc *sc = ifp->if_softc;

        byte |= 0x8000;

        if (dwelltime == 0)
                dwelltime = 200;

        waittime = dwelltime;

        /*
         * Wait for busy bit d15 to go false indicating buffer empty
         */
        do {
                pollbusy = CSR_READ_2(sc, AN_SW0(sc->mpi350));

                if (pollbusy & 0x8000) {
                        FLASH_DELAY(sc, 50);
                        waittime -= 50;
                        continue;
                } else
                        break;
        }
        while (waittime >= 0);

        /* timeout for busy clear wait */

        if (waittime <= 0) {
                if_printf(ifp, "flash putchar busywait timeout!\n");
                return -1;
        }
        /*
         * Port is clear now write byte and wait for it to echo back
         */
        do {
                CSR_WRITE_2(sc, AN_SW0(sc->mpi350), byte);
                FLASH_DELAY(sc, 50);
                dwelltime -= 50;
                echo = CSR_READ_2(sc, AN_SW1(sc->mpi350));
        } while (dwelltime >= 0 && echo != byte);

        CSR_WRITE_2(sc, AN_SW1(sc->mpi350), 0);

        return echo == byte;
}

/*
 * Transfer 32k of firmware data from user buffer to our buffer and send to
 * the card
 */

static int
flashputbuf(struct ifnet *ifp)
{
        unsigned short *bufp;
        int             nwords;
        struct an_softc *sc = ifp->if_softc;

        /* Write stuff */

        bufp = sc->an_flash_buffer;

        if (!sc->mpi350) {
                CSR_WRITE_2(sc, AN_AUX_PAGE, 0x100);
                CSR_WRITE_2(sc, AN_AUX_OFFSET, 0);

                for (nwords = 0; nwords != FLASH_SIZE / 2; nwords++) {
                        CSR_WRITE_2(sc, AN_AUX_DATA, bufp[nwords] & 0xffff);
                }
        } else {
                for (nwords = 0; nwords != FLASH_SIZE / 4; nwords++) {
                        CSR_MEM_AUX_WRITE_4(sc, 0x8000,
                                ((u_int32_t *)bufp)[nwords] & 0xffff);
                }
        }

        CSR_WRITE_2(sc, AN_SW0(sc->mpi350), 0x8000);

        return 0;
}

/*
 * After flashing restart the card.
 */

static int
flashrestart(struct ifnet *ifp)
{
        int             status = 0;
        struct an_softc *sc = ifp->if_softc;

        FLASH_DELAY(sc, 1024);          /* Added 12/7/00 */

        an_init_locked(sc);

        FLASH_DELAY(sc, 1024);          /* Added 12/7/00 */
        return status;
}

/*
 * Entry point for flash ioclt.
 */

static int
flashcard(struct ifnet *ifp, struct aironet_ioctl *l_ioctl)
{
        int             z = 0, status;
        struct an_softc *sc;

        sc = ifp->if_softc;
        if (sc->mpi350) {
                if_printf(ifp, "flashing not supported on MPI 350 yet\n");
                return(-1);
        }
        status = l_ioctl->command;

        switch (l_ioctl->command) {
        case AIROFLSHRST:
                return cmdreset(ifp);
                break;
        case AIROFLSHSTFL:
                if (sc->an_flash_buffer) {
                        free(sc->an_flash_buffer, M_DEVBUF);
                        sc->an_flash_buffer = NULL;
                }
                sc->an_flash_buffer = malloc(FLASH_SIZE, M_DEVBUF, M_WAITOK);
                if (sc->an_flash_buffer)
                        return setflashmode(ifp);
                else
                        return ENOBUFS;
                break;
        case AIROFLSHGCHR:      /* Get char from aux */
                if (l_ioctl->len > sizeof(sc->areq)) {
                        return -EINVAL;
                }
                AN_UNLOCK(sc);
                status = copyin(l_ioctl->data, &sc->areq, l_ioctl->len);
                AN_LOCK(sc);
                if (status)
                        return status;
                z = *(int *)&sc->areq;
                if ((status = flashgchar(ifp, z, 8000)) == 1)
                        return 0;
                else
                        return -1;
        case AIROFLSHPCHR:      /* Send char to card. */
                if (l_ioctl->len > sizeof(sc->areq)) {
                        return -EINVAL;
                }
                AN_UNLOCK(sc);
                status = copyin(l_ioctl->data, &sc->areq, l_ioctl->len);
                AN_LOCK(sc);
                if (status)
                        return status;
                z = *(int *)&sc->areq;
                if ((status = flashpchar(ifp, z, 8000)) == -1)
                        return -EIO;
                else
                        return 0;
                break;
        case AIROFLPUTBUF:      /* Send 32k to card */
                if (l_ioctl->len > FLASH_SIZE) {
                        if_printf(ifp, "Buffer to big, %x %x\n",
                               l_ioctl->len, FLASH_SIZE);
                        return -EINVAL;
                }
                AN_UNLOCK(sc);
                status = copyin(l_ioctl->data, sc->an_flash_buffer, l_ioctl->len);
                AN_LOCK(sc);
                if (status)
                        return status;

                if ((status = flashputbuf(ifp)) != 0)
                        return -EIO;
                else
                        return 0;
                break;
        case AIRORESTART:
                if ((status = flashrestart(ifp)) != 0) {
                        if_printf(ifp, "FLASHRESTART returned %d\n", status);
                        return -EIO;
                } else
                        return 0;

                break;
        default:
                return -EINVAL;
        }

        return -EINVAL;
}