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/*
* 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/hw.h"
#include "hw/isa.h"
#include "exec/address-spaces.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);
}
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