linux-imx

/*

 *    Zorro Bus Services

 *

 *    Copyright (C) 1995-2003 Geert Uytterhoeven

 *

 *    This file is subject to the terms and conditions of the GNU General Public

 *    License.  See the file COPYING in the main directory of this archive

 *    for more details.

 */

​

#include <linux/module.h>

#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/zorro.h>

#include <linux/bitops.h>

#include <linux/string.h>

#include <linux/platform_device.h>

#include <linux/dma-mapping.h>

#include <linux/slab.h>

​

#include <asm/byteorder.h>

#include <asm/setup.h>

#include <asm/amigahw.h>

​

#include "zorro.h"

​

​

    /*

     *  Zorro Expansion Devices

     */

​

unsigned int zorro_num_autocon;

struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata;

struct zorro_dev *zorro_autocon;

​

​

    /*

     *  Zorro bus

     */

​

struct zorro_bus {

    struct device dev;

    struct zorro_dev devices[0];

};

​

​

    /*

     *  Find Zorro Devices

     */

​

struct zorro_dev *zorro_find_device(zorro_id id, struct zorro_dev *from)

{

    struct zorro_dev *z;

​

    if (!zorro_num_autocon)

        return NULL;

​

    for (z = from ? from+1 : &zorro_autocon[0];

         z < zorro_autocon+zorro_num_autocon;

         z++)

        if (id == ZORRO_WILDCARD || id == z->id)

            return z;

    return NULL;

}

EXPORT_SYMBOL(zorro_find_device);

​

​

    /*

     *  Bitmask indicating portions of available Zorro II RAM that are unused

     *  by the system. Every bit represents a 64K chunk, for a maximum of 8MB

     *  (128 chunks, physical 0x00200000-0x009fffff).

     *

     *  If you want to use (= allocate) portions of this RAM, you should clear

     *  the corresponding bits.

     *

     *  Possible uses:

     *      - z2ram device

     *      - SCSI DMA bounce buffers

     *

     *  FIXME: use the normal resource management

     */

​

DECLARE_BITMAP(zorro_unused_z2ram, 128);

EXPORT_SYMBOL(zorro_unused_z2ram);

​

​

static void __init mark_region(unsigned long start, unsigned long end,

                   int flag)

{

    if (flag)

        start += Z2RAM_CHUNKMASK;