mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-24 12:09:58 +00:00
e2328a11bd
vga_init_vbe is now used only from ISA VGA cards. Since the alias is
not needed anymore, remove it (effectively reverting commit 8294a64d7f,
"vga: fix vram double-mapping with -vga std and -M pc-0.12", 2012-05-29)
and the now unused vbe_mapped field of VGACommonState. The function now
consists of a single memory_region_add_subregion call, so we can inline
it; this avoids incorrect usage from PCI cards.
Suggested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Based-on: <05af415a-5058-98b4-4a12-9d093a30b1e3@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
115 lines
3.8 KiB
C
115 lines
3.8 KiB
C
/*
|
|
* QEMU ISA MM 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 "qemu/bitops.h"
|
|
#include "qemu/units.h"
|
|
#include "migration/vmstate.h"
|
|
#include "hw/display/vga.h"
|
|
#include "vga_int.h"
|
|
#include "ui/pixel_ops.h"
|
|
|
|
#define VGA_RAM_SIZE (8 * MiB)
|
|
|
|
typedef struct ISAVGAMMState {
|
|
VGACommonState vga;
|
|
int it_shift;
|
|
} ISAVGAMMState;
|
|
|
|
/* Memory mapped interface */
|
|
static uint64_t vga_mm_read(void *opaque, hwaddr addr, unsigned size)
|
|
{
|
|
ISAVGAMMState *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)
|
|
{
|
|
ISAVGAMMState *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_mm_init(ISAVGAMMState *s, hwaddr vram_base,
|
|
hwaddr ctrl_base, int it_shift,
|
|
MemoryRegion *address_space)
|
|
{
|
|
MemoryRegion *s_ioport_ctrl, *vga_io_memory;
|
|
|
|
s->it_shift = it_shift;
|
|
s_ioport_ctrl = g_malloc(sizeof(*s_ioport_ctrl));
|
|
memory_region_init_io(s_ioport_ctrl, NULL, &vga_mm_ctrl_ops, s,
|
|
"vga-mm-ctrl", 0x100000);
|
|
memory_region_set_flush_coalesced(s_ioport_ctrl);
|
|
|
|
vga_io_memory = g_malloc(sizeof(*vga_io_memory));
|
|
/* XXX: endianness? */
|
|
memory_region_init_io(vga_io_memory, NULL, &vga_mem_ops, &s->vga,
|
|
"vga-mem", 0x20000);
|
|
|
|
vmstate_register(NULL, 0, &vmstate_vga_common, s);
|
|
|
|
memory_region_add_subregion(address_space, ctrl_base, s_ioport_ctrl);
|
|
s->vga.bank_offset = 0;
|
|
memory_region_add_subregion(address_space,
|
|
vram_base + 0x000a0000, vga_io_memory);
|
|
memory_region_set_coalescing(vga_io_memory);
|
|
}
|
|
|
|
int isa_vga_mm_init(hwaddr vram_base,
|
|
hwaddr ctrl_base, int it_shift,
|
|
MemoryRegion *address_space)
|
|
{
|
|
ISAVGAMMState *s;
|
|
|
|
s = g_malloc0(sizeof(*s));
|
|
|
|
s->vga.vram_size_mb = VGA_RAM_SIZE / MiB;
|
|
s->vga.global_vmstate = true;
|
|
vga_common_init(&s->vga, NULL);
|
|
vga_mm_init(s, vram_base, ctrl_base, it_shift, address_space);
|
|
|
|
s->vga.con = graphic_console_init(NULL, 0, s->vga.hw_ops, s);
|
|
|
|
memory_region_add_subregion(address_space,
|
|
VBE_DISPI_LFB_PHYSICAL_ADDRESS,
|
|
&s->vga.vram);
|
|
|
|
return 0;
|
|
}
|