| /* |
| * 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 "hw/hw.h" |
| #include "ui/console.h" |
| #include "hw/i386/pc.h" |
| #include "vga_int.h" |
| #include "ui/pixel_ops.h" |
| #include "qemu/timer.h" |
| |
| #define VGA_RAM_SIZE (8192 * 1024) |
| |
| typedef struct ISAVGAMMState { |
| VGACommonState vga; |
| int it_shift; |
| } ISAVGAMMState; |
| |
| /* Memory mapped interface */ |
| static uint32_t vga_mm_readb (void *opaque, hwaddr addr) |
| { |
| ISAVGAMMState *s = opaque; |
| |
| return vga_ioport_read(&s->vga, addr >> s->it_shift) & 0xff; |
| } |
| |
| static void vga_mm_writeb (void *opaque, |
| hwaddr addr, uint32_t value) |
| { |
| ISAVGAMMState *s = opaque; |
| |
| vga_ioport_write(&s->vga, addr >> s->it_shift, value & 0xff); |
| } |
| |
| static uint32_t vga_mm_readw (void *opaque, hwaddr addr) |
| { |
| ISAVGAMMState *s = opaque; |
| |
| return vga_ioport_read(&s->vga, addr >> s->it_shift) & 0xffff; |
| } |
| |
| static void vga_mm_writew (void *opaque, |
| hwaddr addr, uint32_t value) |
| { |
| ISAVGAMMState *s = opaque; |
| |
| vga_ioport_write(&s->vga, addr >> s->it_shift, value & 0xffff); |
| } |
| |
| static uint32_t vga_mm_readl (void *opaque, hwaddr addr) |
| { |
| ISAVGAMMState *s = opaque; |
| |
| return vga_ioport_read(&s->vga, addr >> s->it_shift); |
| } |
| |
| static void vga_mm_writel (void *opaque, |
| hwaddr addr, uint32_t value) |
| { |
| ISAVGAMMState *s = opaque; |
| |
| vga_ioport_write(&s->vga, addr >> s->it_shift, value); |
| } |
| |
| static const MemoryRegionOps vga_mm_ctrl_ops = { |
| .old_mmio = { |
| .read = { |
| vga_mm_readb, |
| vga_mm_readw, |
| vga_mm_readl, |
| }, |
| .write = { |
| vga_mm_writeb, |
| vga_mm_writew, |
| vga_mm_writel, |
| }, |
| }, |
| .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 >> 20; |
| 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); |
| |
| vga_init_vbe(&s->vga, NULL, address_space); |
| return 0; |
| } |