FreeBSD/Linux Kernel Cross Reference
sys/dev/an/if_an.c

     /*-
      * 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/systm.h>
    #include <sys/sockio.h>
    #include <sys/mbuf.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 <machine/clock.h>      /* for DELAY */  
   
   #include <sys/module.h>
   #include <sys/sysctl.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_arp.h>
   #include <net/ethernet.h>
   #include <net/if_dl.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 int an_init_tx_ring      (struct an_softc *);
   static void an_start            (struct ifnet *);
   static void an_watchdog         (struct ifnet *);
   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 */
   
   SYSCTL_NODE(_hw, OID_AUTO, an, CTLFLAG_RD, 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 >= '') && (*s <= '9')) {
                                   r = r * 16 + (*s - '');
                           } 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,
               0, sizeof(an_conf), sysctl_an_dump, "A", "");
   
   static int
   sysctl_an_cache_mode(SYSCTL_HANDLER_ARGS)
   {
           int     error, last;
   
           last = an_cache_mode;
   
           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,
               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(dev)
           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.
            */
           sc->an_bhandle = rman_get_bushandle(sc->port_res);
           sc->an_btag = rman_get_bustag(sc->port_res);
           sc->an_unit = device_get_unit(dev);
   
           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);
   
           an_reset(sc);
   
           if (an_cmd(sc, AN_CMD_READCFG, 0))
                   return(0);
   
           if (an_read_record(sc, (struct an_ltv_gen *)&ssid))
                   return(0);
   
           /* See if the ssid matches what we expect ... but doesn't have to */
           if (strcmp(ssid.an_entry[0].an_ssid, AN_DEF_SSID))
                   return(0);
   
           return(AN_IOSIZ);
   }
   
   /*
    * Allocate a port resource with the given resource id.
    */
   int
   an_alloc_port(dev, rid, size)
           device_t dev;
           int rid;
           int size;
   {
           struct an_softc *sc = device_get_softc(dev);
           struct resource *res;
   
           res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
                                    0ul, ~0ul, 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(dev, SYS_RES_MEMORY, &rid,
                                    0ul, ~0ul, size, RF_ACTIVE);
           if (res) {
                   sc->mem_rid = rid;
                   sc->mem_res = res;
                   sc->mem_used = size;
                   return (0);
           } else {
                   return (ENOENT);
           }
   }
   
   /*
    * Allocate a auxilary 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(dev, SYS_RES_MEMORY, &rid,
                                    0ul, ~0ul, 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(dev, rid, flags)
           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(arg, segs, nseg, error)
           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(sc, size, dma, mapflags)
           struct an_softc *sc;
           bus_size_t size;
           struct an_dma_alloc *dma;
           int mapflags;
   {
           int r;
   
           r = bus_dmamap_create(sc->an_dtag, BUS_DMA_NOWAIT, &dma->an_dma_map);
           if (r != 0)
                   goto fail_0;
   
           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);
   fail_0:
           bus_dmamap_destroy(sc->an_dtag, dma->an_dma_map);
           dma->an_dma_map = NULL;
           return (r);
   }
   
   static void
   an_dma_free(sc, dma)
           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;
           bus_dmamap_destroy(sc->an_dtag, dma->an_dma_map);
   }
   
   /*
    * Release all resources
    */
   void
   an_release_resources(dev)
           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(sc)
           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;
   
           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)) {
                   printf("an%d: failed to allocate RX descriptor\n", 
                          sc->an_unit);
                   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*)&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)) {
                   printf("an%d: failed to allocate TX descriptor\n", 
                          sc->an_unit);
                   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*)&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)) {
                   printf("an%d: failed to allocate host descriptor\n", 
                          sc->an_unit);
                   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*)&an_rid_desc)[i]);
   
           return(0);
   }
   
   int
   an_attach(sc, unit, flags)
           struct an_softc *sc;
           int unit;
           int flags;
   {
           struct ifnet            *ifp;
           int                     error = EIO;
           int                     i, nrate, mword;
           u_int8_t                r;
   
           mtx_init(&sc->an_mtx, device_get_nameunit(sc->an_dev), MTX_NETWORK_LOCK,
               MTX_DEF | MTX_RECURSE);
           ifp = sc->an_ifp = if_alloc(IFT_ETHER);
           if (ifp == NULL) {
                   printf("an%d: can not if_alloc()\n", sc->an_unit);
                   goto fail;
           }
                   
           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_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)) {
                   printf("an%d: failed to load config data\n", sc->an_unit);
                   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)) {
                   printf("an%d: read record failed\n", sc->an_unit);
                   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)) {
                   printf("an%d: read record failed\n", sc->an_unit);
                   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)) {
                   printf("an%d: read record failed\n", sc->an_unit);
                   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)) {
                   printf("an%d: read record failed\n", sc->an_unit);
                   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)) {
                           printf("an%d: unable to get RSSI <-> dBM map\n", sc->an_unit);
                   } else {
                           printf("an%d: got RSSI <-> dBM map\n", sc->an_unit);
                           sc->an_have_rssimap = 1;
                   }
           } else {
                   printf("an%d: no RSSI <-> dBM map\n", sc->an_unit);
           }
   #endif
   
           ifp->if_softc = sc;
           sc->an_unit = unit;
           if_initname(ifp, device_get_name(sc->an_dev),
               device_get_unit(sc->an_dev));
           ifp->if_mtu = ETHERMTU;
           ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
           ifp->if_ioctl = an_ioctl;
           ifp->if_start = an_start;
           ifp->if_watchdog = an_watchdog;
           ifp->if_init = an_init;
           ifp->if_baudrate = 10000000;
           IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
           ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
           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_T_DS);
                   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:;
           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);
           callout_drain(&sc->an_stat_ch);
           if_free(ifp);
           bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
           an_release_resources(dev);
           mtx_destroy(&sc->an_mtx);
           return (0);
   }
   
   static void
   an_rxeof(sc)
           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))) {
                                   ifp->if_ierrors++;
                                   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)) {
                                           printf("an%d: oversized packet "
                                                  "received (%d, %d)\n",
                                                  sc->an_unit, len, MCLBYTES);
                                           ifp->if_ierrors++;
                                           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)) {
                                           printf("an%d: oversized packet "
                                                  "received (%d, %d)\n",
                                                  sc->an_unit, len, MCLBYTES);
                                           ifp->if_ierrors++;
                                           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_DONTWAIT, MT_DATA);
                           if (m == NULL) {
                                   ifp->if_ierrors++;
                                   return;
                           }
                           MCLGET(m, M_DONTWAIT);
                           if (!(m->m_flags & M_EXT)) {
                                   m_freem(m);
                                   ifp->if_ierrors++;
                                   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))) {
                                   ifp->if_ierrors++;
                                   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))) {
                                   ifp->if_ierrors++;
                                   return;
                           }
                           if (rx_frame_802_3.an_rx_802_3_status != 0) {
                                   ifp->if_ierrors++;
                                   return;
                           }
                           /* Check for insane frame length */
                           len = rx_frame_802_3.an_rx_802_3_payload_len;
                           if (len > sizeof(sc->buf_802_11)) {
                                   printf("an%d: oversized packet "
                                          "received (%d, %d)\n",
                                          sc->an_unit, len, MCLBYTES);
                                   ifp->if_ierrors++;
                                   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);
                                  ifp->if_ierrors++;
                                  return;
                          }
                          ifp->if_ipackets++;
  
                          /* 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*)&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_DONTWAIT, MT_DATA);
                                  if (m == NULL) {
                                          ifp->if_ierrors++;
                                          return;
                                  }
                                  MCLGET(m, M_DONTWAIT);
                                  if (!(m->m_flags & M_EXT)) {
                                          m_freem(m);
                                          ifp->if_ierrors++;
                                          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) {
                                          printf("an%d: oversized packet "
                                                 "received (%d, %d)\n",
                                                 sc->an_unit, len, MCLBYTES);
                                          ifp->if_ierrors++;
                                          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);
                                  
                                  ifp->if_ipackets++;
                                  
                                  /* Receive packet. */
  #if 0
  #ifdef ANCACHE
                                  an_cache_store(sc, eh, m, 
                                          rx_frame.an_rx_signal_strength,
                                          rx_frame.an_rsvd0);
  #endif
  #endif
                                  (*ifp->if_input)(ifp, m);
                          
                                  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*)&an_rx_desc)[i]);
                                  
                          } else {
                                  printf("an%d: Didn't get valid RX packet "
                                         "%x %x %d\n",
                                         sc->an_unit,
                                         an_rx_desc.an_done,
                                         an_rx_desc.an_valid, an_rx_desc.an_len);
                          }
                  }
          }
  }
  
  static void
  an_txeof(sc, status)
          struct an_softc         *sc;
          int                     status;
  {
          struct ifnet            *ifp;
          int                     id, i;
  
          ifp = sc->an_ifp;
  
          ifp->if_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) {
                          ifp->if_oerrors++;
                  } else
                          ifp->if_opackets++;
  
                  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) {
                                  ifp->if_oerrors++;
                          } else
                                  ifp->if_opackets++;
                          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(xsc)
          void                    *xsc;
  {
          struct an_softc         *sc;
          struct ifnet            *ifp;
  
          sc = xsc;
          AN_LOCK_ASSERT(sc);
          ifp = sc->an_ifp;
  
          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(xsc)
          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(ifp);
  
          AN_UNLOCK(sc);
  
          return;
  }
  
  
  static int
  an_cmd_struct(sc, cmd, reply)
          struct an_softc         *sc;
          struct an_command       *cmd;
          struct an_reply         *reply;
  {
          int                     i;
  
          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(sc, cmd, val)
          struct an_softc         *sc;
          int                     cmd;
          int                     val;
  {
          int                     i, s = 0;
  
          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(sc)
          struct an_softc         *sc;
  {
          if (sc->an_gone)
                  return;
  
          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)
                  printf("an%d: reset failed\n", sc->an_unit);
  
          an_cmd(sc, AN_CMD_DISABLE, 0);
  
          return;
  }
  
  /*
   * Read an LTV record from the NIC.
   */
  static int
  an_read_record(sc, ltv)
          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;
          u_int16_t               *ptr;
          u_int8_t                *ptr2;
          int                     i, len;
  
          if (ltv->an_len < 4 || ltv->an_type == 0)
                  return(EINVAL);
  
          if (!sc->mpi350){
                  /* Tell the NIC to enter record read mode. */
                  if (an_cmd(sc, AN_CMD_ACCESS|AN_ACCESS_READ, ltv->an_type)) {
                          printf("an%d: RID access failed\n", sc->an_unit);
                          return(EIO);
                  }
  
                  /* Seek to the record. */
                  if (an_seek(sc, ltv->an_type, 0, AN_BAP1)) {
                          printf("an%d: seek to record failed\n", sc->an_unit);
                          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)) {
                          printf("an%d: record length mismatch -- expected %d, "
                                 "got %d for Rid %x\n", sc->an_unit,
                                 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*)&an_rid_desc)[i]);
  
                  if (an_cmd_struct(sc, &cmd, &reply)
                      || reply.an_status & AN_CMD_QUAL_MASK) {
                          printf("an%d: failed to read RID %x %x %x %x %x, %d\n", 
                                 sc->an_unit, 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)) {
                          printf("an%d: record length mismatch -- expected %d, "
                                 "got %d for Rid %x\n", sc->an_unit,
                                 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(sc, ltv)
          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;
          char                    *buf;
          u_int16_t               *ptr;
          u_int8_t                *ptr2;
          int                     i, len;
  
          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*)&an_rid_desc)[i]);
  
                  DELAY(100000);
  
                  if ((i = an_cmd_struct(sc, &cmd, &reply))) {
                          printf("an%d: failed to write RID 1 %x %x %x %x %x, %d\n", 
                              sc->an_unit, ltv->an_type, 
                              reply.an_status,
                              reply.an_resp0,
                              reply.an_resp1,
                              reply.an_resp2,
                              i);
                          return(EIO);
                  }
  
                  ptr = (u_int16_t *)buf;
  
                  if (reply.an_status & AN_CMD_QUAL_MASK) {
                          printf("an%d: failed to write RID 2 %x %x %x %x %x, %d\n", 
                              sc->an_unit, 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(sc, ltv, string)
          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;
          printf("an%d: RID %4x, Length %4d, Mode %s\n",
                  sc->an_unit, ltv->an_type, ltv->an_len - 4, string);
  
          if (an_dump == 1 || (an_dump == ltv->an_type)) {
                  printf("an%d:\t", sc->an_unit);
                  bzero(buf,sizeof(buf));
  
                  ptr2 = (u_int8_t *)&ltv->an_val;
                  for (i = len; i > 0; i--) {
                          printf("%02x ", *ptr2);
  
                          temp = *ptr2++;
                          if (temp >= ' ' && temp <= '~')
                                  buf[count] = temp;
                          else if (temp >= 'A' && temp <= 'Z')
                                  buf[count] = temp;
                          else
                                  buf[count] = '.';
                          if (++count == 16) {
                                  count = 0;
                                  printf("%s\n",buf);
                                  printf("an%d:\t", sc->an_unit);
                                  bzero(buf,sizeof(buf));
                          }
                  }
                  for (; count != 16; count++) {
                          printf("   ");
                  }
                  printf(" %s\n",buf);
          }
  }
  
  static int
  an_seek(sc, id, off, chan)
          struct an_softc         *sc;
          int                     id, off, 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:
                  printf("an%d: invalid data path: %x\n", sc->an_unit, 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(sc, id, off, buf, len)
          struct an_softc         *sc;
          int                     id, 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(sc, id, off, buf, len)
          struct an_softc         *sc;
          int                     id, 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(sc, len, id)
          struct an_softc         *sc;
          int                     len;
          int                     *id;
  {
          int                     i;
  
          if (an_cmd(sc, AN_CMD_ALLOC_MEM, len)) {
                  printf("an%d: failed to allocate %d bytes on NIC\n",
                      sc->an_unit, 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(sc, areq)
          struct an_softc         *sc;
          struct an_req           *areq;
  {
          struct sockaddr_dl      *sdl;
          struct ifaddr           *ifa;
          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;
  
          switch (areq->an_type) {
          case AN_RID_GENCONFIG:
                  cfg = (struct an_ltv_genconfig *)areq;
  
                  ifa = ifaddr_byindex(ifp->if_index);
                  sdl = (struct sockaddr_dl *)ifa->ifa_addr;
                  bcopy((char *)&cfg->an_macaddr, IFP2ENADDR(sc->an_ifp),
                      ETHER_ADDR_LEN);
                  bcopy((char *)&cfg->an_macaddr, LLADDR(sdl), 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(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:
                  printf("an%d: unknown RID: %x\n", sc->an_unit, areq->an_type);
                  return;
          }
  
  
          /* Reinitialize the card. */
          if (ifp->if_flags)
                  an_init(sc);
  
          return;
  }
  
  /*
   * Derived from Linux driver to enable promiscious mode.
   */
  
  static void
  an_promisc(sc, promisc)
          struct an_softc         *sc;
          int                     promisc;
  {
          if (sc->an_was_monitor)
                  an_reset(sc);
                  /* XXX: indentation bug or braces bug ? */
                  if (sc->mpi350)
                          an_init_mpi350_desc(sc);        
          if (sc->an_monitor || sc->an_was_monitor)
                  an_init(sc);
  
          sc->an_was_monitor = sc->an_monitor;
          an_cmd(sc, AN_CMD_SET_MODE, promisc ? 0xffff : 0);
  
          return;
  }
  
  static int
  an_ioctl(ifp, command, data)
          struct ifnet            *ifp;
          u_long                  command;
          caddr_t                 data;
  {
          int                     error = 0;
          int                     len;
          int                     i, max;
          struct an_softc         *sc;
          struct ifreq            *ifr;
          struct thread           *td = curthread;
          struct ieee80211req     *ireq;
          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;
          AN_LOCK(sc);
          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:
                  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(sc);
                  } else {
                          if (ifp->if_drv_flags & IFF_DRV_RUNNING)
                                  an_stop(sc);
                  }
                  sc->an_if_flags = ifp->if_flags;
                  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 = copyin(ifr->ifr_data, &sc->areq, sizeof(sc->areq));
                  if (error != 0)
                          break;
  #ifdef ANCACHE
                  if (sc->areq.an_type == AN_RID_ZERO_CACHE) {
                          error = suser(td);
                          if (error)
                                  break;
                          sc->an_sigitems = sc->an_nextitem = 0;
                          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)) {
                          error = EINVAL;
                          break;
                  }
                  error = copyout(&sc->areq, ifr->ifr_data, sizeof(sc->areq));
                  break;
          case SIOCSAIRONET:
                  if ((error = suser(td)))
                          goto out;
                  error = copyin(ifr->ifr_data, &sc->areq, sizeof(sc->areq));
                  if (error != 0)
                          break;
                  an_setdef(sc, &sc->areq);
                  break;
          case SIOCGPRIVATE_0:              /* used by Cisco client utility */
                  if ((error = suser(td)))
                          goto out;
                  error = copyin(ifr->ifr_data, &l_ioctl, sizeof(l_ioctl));
                  if (error)
                          goto out;
                  mode = l_ioctl.command;
  
                  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;
                  }
                  if (!error) {
                          /* copy out the updated command info */
                          error = copyout(&l_ioctl, ifr->ifr_data, sizeof(l_ioctl));
                  }
                  break;
          case SIOCGPRIVATE_1:              /* used by Cisco client utility */
                  if ((error = suser(td)))
                          goto out;
                  error = copyin(ifr->ifr_data, &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:
                          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;
                                          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;
                                          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;
                                          break;
                                  } else {
                                          len = ssids->an_entry[ireq->i_val].an_len;
                                          tmpptr = ssids->an_entry[ireq->i_val].an_ssid;
                                  }
                          } else {
                                  error = EINVAL;
                                  break;
                          }
                          if (len > IEEE80211_NWID_LEN) {
                                  error = EINVAL;
                                  break;
                          }
                          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:
                          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;
                                  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;
                          }
                          ireq->i_val = max;
                          break;
                  case IEEE80211_IOC_WEP:
                          sc->areq.an_type = AN_RID_ACTUALCFG;
                          if (an_read_record(sc,
                              (struct an_ltv_gen *)&sc->areq)) {
                                  error = EINVAL;
                                  break;
                          }
                          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) {
                                  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;
                                  }
                                  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.
                           */
                          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)
                                  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;
                                  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;
                                  break;
                          }
                          if (config->an_home_product & AN_HOME_NETWORK)
                                  ireq->i_val = 4;
                          break;
                  case IEEE80211_IOC_AUTHMODE:
                          sc->areq.an_type = AN_RID_ACTUALCFG;
                          if (an_read_record(sc,
                              (struct an_ltv_gen *)&sc->areq)) {
                                  error = EINVAL;
                                  break;
                          }
                          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:
                          sc->areq.an_type = AN_RID_ACTUALCFG;
                          if (an_read_record(sc,
                              (struct an_ltv_gen *)&sc->areq)) {
                                  error = EINVAL;
                                  break;
                          }
                          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:
                          sc->areq.an_type = AN_RID_STATUS;
                          if (an_read_record(sc,
                              (struct an_ltv_gen *)&sc->areq)) {
                                  error = EINVAL;
                                  break;
                          }
                          ireq->i_val = status->an_cur_channel;
                          break;
                  case IEEE80211_IOC_POWERSAVE:
                          sc->areq.an_type = AN_RID_ACTUALCFG;
                          if (an_read_record(sc,
                              (struct an_ltv_gen *)&sc->areq)) {
                                  error = EINVAL;
                                  break;
                          }
                          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:
                          sc->areq.an_type = AN_RID_ACTUALCFG;
                          if (an_read_record(sc,
                              (struct an_ltv_gen *)&sc->areq)) {
                                  error = EINVAL;
                                  break;
                          }
                          ireq->i_val = config->an_listen_interval;
                          break;
                  }
                  break;
          case SIOCS80211:
                  if ((error = suser(td)))
                          goto out;
                  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;
                                  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;
                                  break;
                          }
                          if (ireq->i_len > IEEE80211_NWID_LEN) {
                                  error = EINVAL;
                                  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;
                                  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;
                                  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;
                          }
                          break;
                  case IEEE80211_IOC_WEPKEY:
                          if (ireq->i_val < 0 || ireq->i_val > 8 ||
                              ireq->i_len > 13) {
                                  error = EINVAL;
                                  break;
                          }
                          error = copyin(ireq->i_data, tmpstr, 13);
                          if (error != 0)
                                  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);
                          break;
                  case IEEE80211_IOC_WEPTXKEY:
                          if (ireq->i_val < 0 || ireq->i_val > 4) {
                                  error = EINVAL;
                                  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;
                                  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(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;
                          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;
                          }
                          break;
                  case IEEE80211_IOC_STATIONNAME:
                          if (ireq->i_len > 16) {
                                  error = EINVAL;
                                  break;
                          }
                          bzero(config->an_nodename, 16);
                          error = copyin(ireq->i_data,
                              config->an_nodename, ireq->i_len);
                          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;
                                  break;
                          }
                          config->an_ds_channel = ireq->i_val;
                          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;
                          }
                          break;
                  case IEEE80211_IOC_POWERSAVESLEEP:
                          config->an_listen_interval = ireq->i_val;
                          break;
                  }
  
                  if (!error)
                          an_setdef(sc, &sc->areq);
                  break;
          default:
                  error = ether_ioctl(ifp, command, data);
                  break;
          }
  out:
          AN_UNLOCK(sc);
  
          return(error != 0);
  }
  
  static int
  an_init_tx_ring(sc)
          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(xsc)
          void                    *xsc;
  {
          struct an_softc         *sc = xsc;
          struct ifnet            *ifp = sc->an_ifp;
  
          AN_LOCK(sc);
  
          if (sc->an_gone) {
                  AN_UNLOCK(sc);
                  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)) {
                          printf("an%d: tx buffer allocation "
                              "failed\n", sc->an_unit);
                          AN_UNLOCK(sc);
                          return;
                  }
          }
  
          /* Set our MAC address. */
          bcopy((char *)IFP2ENADDR(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;
                          }
                  }
          }
  
          if (sc->an_have_rssimap)
                  sc->an_config.an_rxmode |= AN_RXMODE_NORMALIZED_RSSI;
  
          /* 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)) {
                  printf("an%d: failed to set ssid list\n", sc->an_unit);
                  AN_UNLOCK(sc);
                  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)) {
                  printf("an%d: failed to set AP list\n", sc->an_unit);
                  AN_UNLOCK(sc);
                  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)) {
                  printf("an%d: failed to set configuration\n", sc->an_unit);
                  AN_UNLOCK(sc);
                  return;
          }
  
          /* Enable the MAC */
          if (an_cmd(sc, AN_CMD_ENABLE, 0)) {
                  printf("an%d: failed to enable MAC\n", sc->an_unit);
                  AN_UNLOCK(sc);
                  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);
          AN_UNLOCK(sc);
  
          return;
  }
  
  static void
  an_start(ifp)
          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;
  
          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;
                          /* 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))
                                  printf("an%d: xmit failed\n", sc->an_unit);
  
                          AN_INC(idx, AN_TX_RING_CNT);
  
                          /*
                           * Set a timeout in case the chip goes out to lunch.
                           */
                          ifp->if_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;
                          /* 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 = 0; i < sizeof(an_tx_desc) / 4 ; i++) {
                                  CSR_MEM_AUX_WRITE_4(sc, AN_TX_DESC_OFFSET
                                      /* zero for now */ 
                                      + (0 * sizeof(an_tx_desc))
                                      + (i * 4),
                                      ((u_int32_t*)&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.
                           */
                          ifp->if_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(sc)
          struct an_softc         *sc;
  {
          struct ifnet            *ifp;
          int                     i;
  
          AN_LOCK(sc);
  
          if (sc->an_gone) {
                  AN_UNLOCK(sc);
                  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;
          }
  
          AN_UNLOCK(sc);
  
          return;
  }
  
  static void
  an_watchdog(ifp)
          struct ifnet            *ifp;
  {
          struct an_softc         *sc;
  
          sc = ifp->if_softc;
          AN_LOCK(sc);
  
          if (sc->an_gone) {
                  AN_UNLOCK(sc);
                  return;
          }
  
          printf("an%d: device timeout\n", sc->an_unit);
  
          an_reset(sc);
          if (sc->mpi350)
                  an_init_mpi350_desc(sc);        
          an_init(sc);
  
          ifp->if_oerrors++;
          AN_UNLOCK(sc);
  
          return;
  }
  
  void
  an_shutdown(dev)
          device_t                dev;
  {
          struct an_softc         *sc;
  
          sc = device_get_softc(dev);
          an_stop(sc);
          sc->an_gone = 1;
  
          return;
  }
  
  void
  an_resume(dev)
          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(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(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 (sc, eh, m, rx_rssi, rx_quality)
          struct an_softc *sc;
          struct ether_header *eh;
          struct mbuf *m;
          u_int8_t rx_rssi;
          u_int8_t rx_quality;
  {
          struct ip *ip = 0;
          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
          printf("an: 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(ifp)
          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;
  
          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(sc);
  
          return(0);
  }
  
  static void
  an_media_status(ifp, imr)
          struct ifnet            *ifp;
          struct ifmediareq       *imr;
  {
          struct an_ltv_status    status;
          struct an_softc         *sc = ifp->if_softc;
  
          imr->ifm_active = IFM_IEEE80211;
  
          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_T_DS);
          imr->ifm_status = IFM_AVALID;
          if (status.an_opmode & AN_STATUS_OPMODE_ASSOCIATED)
                  imr->ifm_status |= IFM_ACTIVE;
  }
  
  /********************** Cisco utility support routines *************/
  
  /*
   * ReadRids & WriteRids derived from Cisco driver additions to Ben Reed's
   * Linux driver
   */
  
  static int
  readrids(ifp, l_ioctl)
          struct ifnet   *ifp;
          struct aironet_ioctl *l_ioctl;
  {
          unsigned short  rid;
          struct an_softc *sc;
  
          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 */
  
          /* the data contains the length at first */
          if (copyout(&(sc->areq.an_len), l_ioctl->data,
                      sizeof(sc->areq.an_len))) {
                  return -EFAULT;
          }
          /* Just copy the data back */
          if (copyout(&(sc->areq.an_val), l_ioctl->data + 2,
                      l_ioctl->len)) {
                  return -EFAULT;
          }
          return 0;
  }
  
  static int
  writerids(ifp, l_ioctl)
          struct ifnet   *ifp;
          struct aironet_ioctl *l_ioctl;
  {
          struct an_softc *sc;
          int             rid, command;
  
          sc = ifp->if_softc;
          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 */
  
                  /* the data contains the length at first */
                  if (copyout(&(sc->areq.an_len), l_ioctl->data,
                              sizeof(sc->areq.an_len))) {
                          return -EFAULT;
                  }
                  /* Just copy the data */
                  if (copyout(&(sc->areq.an_val), l_ioctl->data + 2,
                              l_ioctl->len)) {
                          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 */
                  if (copyin((l_ioctl->data) + 2, &sc->areq.an_val,
                         l_ioctl->len)) {
                          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(ifp)
          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(ifp, uSec)
          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(ifp)
          struct ifnet   *ifp;
  {
          int             status;
          struct an_softc *sc = ifp->if_softc;
  
          an_stop(sc);
  
          an_cmd(sc, AN_CMD_DISABLE, 0);
  
          if (!(status = WaitBusy(ifp, AN_TIMEOUT))) {
                  printf("an%d: Waitbusy hang b4 RESET =%d\n",
                         sc->an_unit, status);
                  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))) {
                  printf("an%d: Waitbusy hang AFTER RESET =%d\n",
                         sc->an_unit, status);
                  return -EBUSY;
          }
          return 0;
  }
  
  /*
   * STEP 2) Put the card in legendary flash mode
   */
  
  static int
  setflashmode(ifp)
          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(ifp, matchbyte, dwelltime)
          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(ifp, byte, dwelltime)
          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) {
                  printf("an%d: flash putchar busywait timeout! \n",
                         sc->an_unit);
                  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(ifp)
          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(ifp)
          struct ifnet   *ifp;
  {
          int             status = 0;
          struct an_softc *sc = ifp->if_softc;
  
          FLASH_DELAY(sc, 1024);          /* Added 12/7/00 */
  
          an_init(sc);
  
          FLASH_DELAY(sc, 1024);          /* Added 12/7/00 */
          return status;
  }
  
  /*
   * Entry point for flash ioclt.
   */
  
  static int
  flashcard(ifp, l_ioctl)
          struct ifnet   *ifp;
          struct aironet_ioctl *l_ioctl;
  {
          int             z = 0, status;
          struct an_softc *sc;
  
          sc = ifp->if_softc;
          if (sc->mpi350) {
                  printf("an%d: flashing not supported on MPI 350 yet\n", 
                         sc->an_unit);
                  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 */
                  status = copyin(l_ioctl->data, &sc->areq, l_ioctl->len);
                  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. */
                  status = copyin(l_ioctl->data, &sc->areq, l_ioctl->len);
                  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) {
                          printf("an%d: Buffer to big, %x %x\n", sc->an_unit,
                                 l_ioctl->len, FLASH_SIZE);
                          return -EINVAL;
                  }
                  status = copyin(l_ioctl->data, sc->an_flash_buffer, l_ioctl->len);
                  if (status)
                          return status;
  
                  if ((status = flashputbuf(ifp)) != 0)
                          return -EIO;
                  else
                          return 0;
                  break;
          case AIRORESTART:
                  if ((status = flashrestart(ifp)) != 0) {
                          printf("an%d: FLASHRESTART returned %d\n",
                                 sc->an_unit, status);
                          return -EIO;
                  } else
                          return 0;
  
                  break;
          default:
                  return -EINVAL;
          }
  
          return -EINVAL;
  }