Archipelago » qemu

/*

 * Memory mapped access to ISA IO space.

 *

 * Copyright (c) 2006 Fabrice Bellard

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include "hw.h"

#include "isa.h"

#include "exec-memory.h"

static void isa_mmio_writeb (void *opaque, hwaddr addr,

                                  uint32_t val)

{

    cpu_outb(addr & IOPORTS_MASK, val);

}

static void isa_mmio_writew(void *opaque, hwaddr addr,

                               uint32_t val)

{

    cpu_outw(addr & IOPORTS_MASK, val);

}

static void isa_mmio_writel(void *opaque, hwaddr addr,

                               uint32_t val)

{

    cpu_outl(addr & IOPORTS_MASK, val);

}

static uint32_t isa_mmio_readb (void *opaque, hwaddr addr)

{

    return cpu_inb(addr & IOPORTS_MASK);

}

static uint32_t isa_mmio_readw(void *opaque, hwaddr addr)

{

    return cpu_inw(addr & IOPORTS_MASK);

}

static uint32_t isa_mmio_readl(void *opaque, hwaddr addr)

{

    return cpu_inl(addr & IOPORTS_MASK);

}

static const MemoryRegionOps isa_mmio_ops = {

    .old_mmio = {

        .write = { isa_mmio_writeb, isa_mmio_writew, isa_mmio_writel },

        .read = { isa_mmio_readb, isa_mmio_readw, isa_mmio_readl, },

    },

    .endianness = DEVICE_LITTLE_ENDIAN,

};

void isa_mmio_setup(MemoryRegion *mr, hwaddr size)

{

    memory_region_init_io(mr, &isa_mmio_ops, NULL, "isa-mmio", size);

}

void isa_mmio_init(hwaddr base, hwaddr size)

{

    MemoryRegion *mr = g_malloc(sizeof(*mr));

    isa_mmio_setup(mr, size);

    memory_region_add_subregion(get_system_memory(), base, mr);

}