af956cadc3
Reviewed-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/*
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* Memory mapped access to ISA IO space.
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*
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* Copyright (c) 2006 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h"
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#include "isa.h"
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#include "exec-memory.h"
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static void isa_mmio_writeb (void *opaque, target_phys_addr_t addr,
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uint32_t val)
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{
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cpu_outb(addr & IOPORTS_MASK, val);
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}
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static void isa_mmio_writew(void *opaque, target_phys_addr_t addr,
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uint32_t val)
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{
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cpu_outw(addr & IOPORTS_MASK, val);
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}
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static void isa_mmio_writel(void *opaque, target_phys_addr_t addr,
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uint32_t val)
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{
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cpu_outl(addr & IOPORTS_MASK, val);
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}
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static uint32_t isa_mmio_readb (void *opaque, target_phys_addr_t addr)
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{
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return cpu_inb(addr & IOPORTS_MASK);
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}
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static uint32_t isa_mmio_readw(void *opaque, target_phys_addr_t addr)
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{
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return cpu_inw(addr & IOPORTS_MASK);
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}
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static uint32_t isa_mmio_readl(void *opaque, target_phys_addr_t addr)
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{
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return cpu_inl(addr & IOPORTS_MASK);
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}
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static const MemoryRegionOps isa_mmio_ops = {
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.old_mmio = {
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.write = { isa_mmio_writeb, isa_mmio_writew, isa_mmio_writel },
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.read = { isa_mmio_readb, isa_mmio_readw, isa_mmio_readl, },
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},
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.endianness = DEVICE_LITTLE_ENDIAN,
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};
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void isa_mmio_setup(MemoryRegion *mr, target_phys_addr_t size)
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{
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memory_region_init_io(mr, &isa_mmio_ops, NULL, "isa-mmio", size);
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}
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void isa_mmio_init(target_phys_addr_t base, target_phys_addr_t size)
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{
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MemoryRegion *mr = qemu_malloc(sizeof(*mr));
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isa_mmio_setup(mr, size);
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memory_region_add_subregion(get_system_memory(), base, mr);
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}
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