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author | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2006-09-18 01:15:29 +0000 |
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committer | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2006-09-18 01:15:29 +0000 |
commit | aef445bd7e46d2d47701a03c5478da34b3d53c4c (patch) | |
tree | 0f9a7993dad66b412e857a25f6cd56f3313e7a37 /hw/isa_mmio.c | |
parent | 6787f5fae0fb9e3923b8c316780645c3e1d81df2 (diff) | |
download | qemu-aef445bd7e46d2d47701a03c5478da34b3d53c4c.zip qemu-aef445bd7e46d2d47701a03c5478da34b3d53c4c.tar.gz qemu-aef445bd7e46d2d47701a03c5478da34b3d53c4c.tar.bz2 |
Merge common ISA access routines.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2159 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw/isa_mmio.c')
-rw-r--r-- | hw/isa_mmio.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/hw/isa_mmio.c b/hw/isa_mmio.c new file mode 100644 index 0000000..070f6f5 --- /dev/null +++ b/hw/isa_mmio.c @@ -0,0 +1,102 @@ +/* + * 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 "vl.h" + +static void isa_mmio_writeb (void *opaque, target_phys_addr_t addr, + uint32_t val) +{ + cpu_outb(NULL, addr & 0xffff, val); +} + +static void isa_mmio_writew (void *opaque, target_phys_addr_t addr, + uint32_t val) +{ +#ifdef TARGET_WORDS_BIGENDIAN + val = bswap16(val); +#endif + cpu_outw(NULL, addr & 0xffff, val); +} + +static void isa_mmio_writel (void *opaque, target_phys_addr_t addr, + uint32_t val) +{ +#ifdef TARGET_WORDS_BIGENDIAN + val = bswap32(val); +#endif + cpu_outl(NULL, addr & 0xffff, val); +} + +static uint32_t isa_mmio_readb (void *opaque, target_phys_addr_t addr) +{ + uint32_t val; + + val = cpu_inb(NULL, addr & 0xffff); + return val; +} + +static uint32_t isa_mmio_readw (void *opaque, target_phys_addr_t addr) +{ + uint32_t val; + + val = cpu_inw(NULL, addr & 0xffff); +#ifdef TARGET_WORDS_BIGENDIAN + val = bswap16(val); +#endif + return val; +} + +static uint32_t isa_mmio_readl (void *opaque, target_phys_addr_t addr) +{ + uint32_t val; + + val = cpu_inl(NULL, addr & 0xffff); +#ifdef TARGET_WORDS_BIGENDIAN + val = bswap32(val); +#endif + return val; +} + +static CPUWriteMemoryFunc *isa_mmio_write[] = { + &isa_mmio_writeb, + &isa_mmio_writew, + &isa_mmio_writel, +}; + +static CPUReadMemoryFunc *isa_mmio_read[] = { + &isa_mmio_readb, + &isa_mmio_readw, + &isa_mmio_readl, +}; + +static int isa_mmio_iomemtype = 0; + +void isa_mmio_init(target_phys_addr_t base, target_phys_addr_t size) +{ + if (!isa_mmio_iomemtype) { + isa_mmio_iomemtype = cpu_register_io_memory(0, isa_mmio_read, + isa_mmio_write, NULL); + } + cpu_register_physical_memory(base, size, isa_mmio_iomemtype); +} |