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/*
* QEMU MMIO VGA Emulator.
*
* Copyright (c) 2003 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 "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/sysbus.h"
#include "hw/display/vga.h"
#include "hw/qdev-properties.h"
#include "vga_int.h"
/*
* QEMU interface:
* + sysbus MMIO region 0: VGA I/O registers
* + sysbus MMIO region 1: VGA MMIO registers
* + sysbus MMIO region 2: VGA memory
*/
OBJECT_DECLARE_SIMPLE_TYPE(VGAMmioState, VGA_MMIO)
struct VGAMmioState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
VGACommonState vga;
MemoryRegion iomem;
MemoryRegion lowmem;
uint8_t it_shift;
};
static uint64_t vga_mm_read(void *opaque, hwaddr addr, unsigned size)
{
VGAMmioState *s = opaque;
return vga_ioport_read(&s->vga, addr >> s->it_shift) &
MAKE_64BIT_MASK(0, size * 8);
}
static void vga_mm_write(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
VGAMmioState *s = opaque;
vga_ioport_write(&s->vga, addr >> s->it_shift,
value & MAKE_64BIT_MASK(0, size * 8));
}
static const MemoryRegionOps vga_mm_ctrl_ops = {
.read = vga_mm_read,
.write = vga_mm_write,
.valid.min_access_size = 1,
.valid.max_access_size = 4,
.impl.min_access_size = 1,
.impl.max_access_size = 4,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void vga_mmio_reset(DeviceState *dev)
{
VGAMmioState *s = VGA_MMIO(dev);
vga_common_reset(&s->vga);
}
static void vga_mmio_realizefn(DeviceState *dev, Error **errp)
{
VGAMmioState *s = VGA_MMIO(dev);
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
memory_region_init_io(&s->iomem, OBJECT(dev), &vga_mm_ctrl_ops, s,
"vga-mmio", 0x100000);
memory_region_set_flush_coalesced(&s->iomem);
sysbus_init_mmio(sbd, &s->iomem);
/* XXX: endianness? */
memory_region_init_io(&s->lowmem, OBJECT(dev), &vga_mem_ops, &s->vga,
"vga-lowmem", 0x20000);
memory_region_set_coalescing(&s->lowmem);
sysbus_init_mmio(sbd, &s->lowmem);
s->vga.bank_offset = 0;
s->vga.global_vmstate = true;
vga_common_init(&s->vga, OBJECT(dev));
sysbus_init_mmio(sbd, &s->vga.vram);
s->vga.con = graphic_console_init(dev, 0, s->vga.hw_ops, &s->vga);
}
static Property vga_mmio_properties[] = {
DEFINE_PROP_UINT8("it_shift", VGAMmioState, it_shift, 0),
DEFINE_PROP_UINT32("vgamem_mb", VGAMmioState, vga.vram_size_mb, 8),
DEFINE_PROP_END_OF_LIST(),
};
static void vga_mmio_class_initfn(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = vga_mmio_realizefn;
dc->reset = vga_mmio_reset;
dc->vmsd = &vmstate_vga_common;
device_class_set_props(dc, vga_mmio_properties);
set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
}
static const TypeInfo vga_mmio_info = {
.name = TYPE_VGA_MMIO,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(VGAMmioState),
.class_init = vga_mmio_class_initfn,
};
static void vga_mmio_register_types(void)
{
type_register_static(&vga_mmio_info);
}
type_init(vga_mmio_register_types)
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