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

     /*-
      * Copyright (c) 1998 - 2008 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.
     *
     * 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: releng/8.4/sys/dev/ata/ata-isa.c 229294 2012-01-02 17:28:14Z mav $");
    
    #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>
    #include <ata_if.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_probe(device_t dev)
    {
        struct resource *io = NULL, *ctlio = NULL;
        u_long tmp;
        int 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;
        if (!(io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
                                      ATA_IOSIZE, RF_ACTIVE)))
            return ENXIO;
    
        /* set the altport range */
        if (bus_get_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, &tmp, &tmp)) {
            bus_set_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID,
                             rman_get_start(io) + ATA_CTLOFFSET, ATA_CTLIOSIZE);
        }
    
        /* allocate the altport range */
        rid = ATA_CTLADDR_RID; 
        if (!(ctlio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
                                         ATA_CTLIOSIZE, RF_ACTIVE))) {
            bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io);
            return ENXIO;
        }
    
        /* Release resources to reallocate on attach. */
        bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlio);
        bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io);
    
        device_set_desc(dev, "ATA channel");
        return (ata_probe(dev));
    }
    
    static int
   ata_isa_attach(device_t dev)
   {
       struct ata_channel *ch = device_get_softc(dev);
       struct resource *io = NULL, *ctlio = NULL;
       u_long tmp;
       int i, rid;
   
       if (ch->attached)
           return (0);
       ch->attached = 1;
   
       /* allocate the io port range */
       rid = ATA_IOADDR_RID;
       if (!(io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
                                     ATA_IOSIZE, RF_ACTIVE)))
           return ENXIO;
   
       /* set the altport range */
       if (bus_get_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, &tmp, &tmp)) {
           bus_set_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID,
                            rman_get_start(io) + ATA_CTLOFFSET, ATA_CTLIOSIZE);
       }
   
       /* allocate the altport range */
       rid = ATA_CTLADDR_RID; 
       if (!(ctlio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
                                        ATA_CTLIOSIZE, RF_ACTIVE))) {
           bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io);
           return ENXIO;
       }
   
       /* setup the resource vectors */
       for (i = ATA_DATA; i <= ATA_COMMAND; i++) {
           ch->r_io[i].res = io;
           ch->r_io[i].offset = i;
       }
       ch->r_io[ATA_CONTROL].res = ctlio;
       ch->r_io[ATA_CONTROL].offset = 0;
       ch->r_io[ATA_IDX_ADDR].res = io;
       ata_default_registers(dev);
    
       /* initialize softc for this channel */
       ch->unit = 0;
       ch->flags |= ATA_USE_16BIT;
       ata_generic_hw(dev);
       return ata_attach(dev);
   }
   
   static int
   ata_isa_detach(device_t dev)
   {
       struct ata_channel *ch = device_get_softc(dev);
       int error;
   
       if (!ch->attached)
           return (0);
       ch->attached = 0;
   
       error = ata_detach(dev);
   
       bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID,
           ch->r_io[ATA_CONTROL].res);
       bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID,
           ch->r_io[ATA_IDX_ADDR].res);
       return (error);
   }
   
   static int
   ata_isa_suspend(device_t dev)
   {
       struct ata_channel *ch = device_get_softc(dev);
   
       if (!ch->attached)
           return (0);
   
       return ata_suspend(dev);
   }
   
   static int
   ata_isa_resume(device_t dev)
   {
       struct ata_channel *ch = device_get_softc(dev);
   
       if (!ch->attached)
           return (0);
   
       return ata_resume(dev);
   }
   
   
   static device_method_t ata_isa_methods[] = {
       /* device interface */
       DEVMETHOD(device_probe,     ata_isa_probe),
       DEVMETHOD(device_attach,    ata_isa_attach),
       DEVMETHOD(device_detach,    ata_isa_detach),
       DEVMETHOD(device_suspend,   ata_isa_suspend),
       DEVMETHOD(device_resume,    ata_isa_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);
   MODULE_DEPEND(ata, ata, 1, 1, 1);

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