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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
/*
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* QEMU ISA MM VGA Emulator.
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*
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* Copyright (c) 2003 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 "qemu/osdep.h"
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#include "qemu/bitops.h"
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#include "qemu/units.h"
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#include "migration/vmstate.h"
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#include "hw/display/vga.h"
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#include "vga_int.h"
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#include "ui/pixel_ops.h"
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#define VGA_RAM_SIZE (8 * MiB)
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typedef struct ISAVGAMMState {
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VGACommonState vga;
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int it_shift;
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} ISAVGAMMState;
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/* Memory mapped interface */
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static uint64_t vga_mm_read(void *opaque, hwaddr addr, unsigned size)
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{
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ISAVGAMMState *s = opaque;
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return vga_ioport_read(&s->vga, addr >> s->it_shift) &
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MAKE_64BIT_MASK(0, size * 8);
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}
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static void vga_mm_write(void *opaque, hwaddr addr, uint64_t value,
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unsigned size)
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{
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ISAVGAMMState *s = opaque;
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vga_ioport_write(&s->vga, addr >> s->it_shift,
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value & MAKE_64BIT_MASK(0, size * 8));
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}
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static const MemoryRegionOps vga_mm_ctrl_ops = {
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.read = vga_mm_read,
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.write = vga_mm_write,
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.valid.min_access_size = 1,
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.valid.max_access_size = 4,
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.impl.min_access_size = 1,
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.impl.max_access_size = 4,
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.endianness = DEVICE_NATIVE_ENDIAN,
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};
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static void vga_mm_init(ISAVGAMMState *s, hwaddr vram_base,
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hwaddr ctrl_base, int it_shift,
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MemoryRegion *address_space)
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{
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MemoryRegion *s_ioport_ctrl, *vga_io_memory;
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s->it_shift = it_shift;
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s_ioport_ctrl = g_malloc(sizeof(*s_ioport_ctrl));
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memory_region_init_io(s_ioport_ctrl, NULL, &vga_mm_ctrl_ops, s,
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"vga-mm-ctrl", 0x100000);
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memory_region_set_flush_coalesced(s_ioport_ctrl);
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vga_io_memory = g_malloc(sizeof(*vga_io_memory));
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/* XXX: endianness? */
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memory_region_init_io(vga_io_memory, NULL, &vga_mem_ops, &s->vga,
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"vga-mem", 0x20000);
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vmstate_register(NULL, 0, &vmstate_vga_common, s);
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memory_region_add_subregion(address_space, ctrl_base, s_ioport_ctrl);
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s->vga.bank_offset = 0;
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memory_region_add_subregion(address_space,
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vram_base + 0x000a0000, vga_io_memory);
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memory_region_set_coalescing(vga_io_memory);
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}
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int isa_vga_mm_init(hwaddr vram_base,
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hwaddr ctrl_base, int it_shift,
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MemoryRegion *address_space)
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{
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ISAVGAMMState *s;
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s = g_malloc0(sizeof(*s));
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s->vga.vram_size_mb = VGA_RAM_SIZE / MiB;
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s->vga.global_vmstate = true;
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vga_common_init(&s->vga, NULL);
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vga_mm_init(s, vram_base, ctrl_base, it_shift, address_space);
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s->vga.con = graphic_console_init(NULL, 0, s->vga.hw_ops, s);
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memory_region_add_subregion(address_space,
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VBE_DISPI_LFB_PHYSICAL_ADDRESS,
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&s->vga.vram);
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return 0;
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}
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