symbian-qemu-0.9.1-12/qemu-symbian-svp/hw/isa_mmio.c
author martin.trojer@nokia.com
Fri, 31 Jul 2009 15:01:17 +0100
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/*
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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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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(NULL, addr & 0xffff, 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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#ifdef TARGET_WORDS_BIGENDIAN
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    val = bswap16(val);
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#endif
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    cpu_outw(NULL, addr & 0xffff, 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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#ifdef TARGET_WORDS_BIGENDIAN
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    val = bswap32(val);
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#endif
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    cpu_outl(NULL, addr & 0xffff, 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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    uint32_t val;
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    val = cpu_inb(NULL, addr & 0xffff);
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    return val;
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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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    uint32_t val;
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    val = cpu_inw(NULL, addr & 0xffff);
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#ifdef TARGET_WORDS_BIGENDIAN
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    val = bswap16(val);
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#endif
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    return val;
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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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    uint32_t val;
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    val = cpu_inl(NULL, addr & 0xffff);
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#ifdef TARGET_WORDS_BIGENDIAN
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    val = bswap32(val);
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#endif
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    return val;
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}
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static CPUWriteMemoryFunc *isa_mmio_write[] = {
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    &isa_mmio_writeb,
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    &isa_mmio_writew,
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    &isa_mmio_writel,
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};
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static CPUReadMemoryFunc *isa_mmio_read[] = {
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    &isa_mmio_readb,
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    &isa_mmio_readw,
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    &isa_mmio_readl,
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};
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static int isa_mmio_iomemtype = 0;
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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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    if (!isa_mmio_iomemtype) {
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        isa_mmio_iomemtype = cpu_register_io_memory(0, isa_mmio_read,
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                                                    isa_mmio_write, NULL);
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    }
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    cpu_register_physical_memory(base, size, isa_mmio_iomemtype);
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}