FreeBSD/Linux Kernel Cross Reference
sys/dev/ata/ata-isa.c

     /*-
      * Copyright (c) 1998 - 2004 Søren Schmidt <sos@FreeBSD.org>
      * 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,
     *    without modification, immediately at the beginning of the file.
     * 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. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR 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.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include "opt_ata.h"
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/ata.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/bus.h>
    #include <sys/malloc.h>
    #include <sys/sema.h>
    #include <sys/taskqueue.h>
    #include <vm/uma.h>
    #include <machine/stdarg.h>
    #include <machine/resource.h>
    #include <machine/bus.h>
    #include <sys/rman.h>
    #include <isa/isavar.h>
    #include <dev/ata/ata-all.h>
    
    /* local vars */
    static struct isa_pnp_id ata_ids[] = {
        {0x0006d041,        "Generic ESDI/IDE/ATA controller"},     /* PNP0600 */
        {0x0106d041,        "Plus Hardcard II"},                    /* PNP0601 */
        {0x0206d041,        "Plus Hardcard IIXL/EZ"},               /* PNP0602 */
        {0x0306d041,        "Generic ATA"},                         /* PNP0603 */
                                                                    /* PNP0680 */
        {0x8006d041,        "Standard bus mastering IDE hard disk controller"},
        {0}
    };
    
    static int
    ata_isa_locknoop(struct ata_channel *ch, int type)
    {
        return ch->unit;
    }
    
    static void
    ata_isa_setmode(struct ata_device *atadev, int mode)
    {
        atadev->mode = ata_limit_mode(atadev, mode, ATA_PIO_MAX);
    }
    
    static int
    ata_isa_probe(device_t dev)
    {
        struct ata_channel *ch = device_get_softc(dev);
        struct resource *io = NULL, *altio = NULL;
        u_long tmp;
        int i, rid;
    
        /* check isapnp ids */
        if (ISA_PNP_PROBE(device_get_parent(dev), dev, ata_ids) == ENXIO)
            return ENXIO;
        
        /* allocate the io port range */
        rid = ATA_IOADDR_RID;
        io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
                                ATA_IOSIZE, RF_ACTIVE);
        if (!io)
            return ENXIO;
    
        /* set the altport range */
        if (bus_get_resource(dev, SYS_RES_IOPORT, ATA_ALTADDR_RID, &tmp, &tmp)) {
            bus_set_resource(dev, SYS_RES_IOPORT, ATA_ALTADDR_RID,
                             rman_get_start(io) + ATA_ALTOFFSET, ATA_ALTIOSIZE);
        }
    
        /* allocate the altport range */
        rid = ATA_ALTADDR_RID; 
       altio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
                                  ATA_ALTIOSIZE, RF_ACTIVE);
       if (!altio) {
           bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io);
           return ENXIO;
       }
   
       /* setup the resource vectors */
       for (i = ATA_DATA; i <= ATA_STATUS; i++) {
           ch->r_io[i].res = io;
           ch->r_io[i].offset = i;
       }
       ch->r_io[ATA_ALTSTAT].res = altio;
       ch->r_io[ATA_ALTSTAT].offset = 0;
       
       /* initialize softc for this channel */
       ch->unit = 0;
       ch->flags |= ATA_USE_16BIT;
       ch->locking = ata_isa_locknoop;
       ch->device[MASTER].setmode = ata_isa_setmode;
       ch->device[SLAVE].setmode = ata_isa_setmode;
       ata_generic_hw(ch);
       return ata_probe(dev);
   }
   
   static device_method_t ata_isa_methods[] = {
       /* device interface */
       DEVMETHOD(device_probe,     ata_isa_probe),
       DEVMETHOD(device_attach,    ata_attach),
       DEVMETHOD(device_resume,    ata_resume),
       { 0, 0 }
   };
   
   static driver_t ata_isa_driver = {
       "ata",
       ata_isa_methods,
       sizeof(struct ata_channel),
   };
   
   DRIVER_MODULE(ata, isa, ata_isa_driver, ata_devclass, 0, 0);

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