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/*
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 * QEMU PCI 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 "hw.h"
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#include "console.h"
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#include "pc.h"
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#include "pci.h"
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#include "vga_int.h"
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#include "pixel_ops.h"
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#include "qemu-timer.h"
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#include "loader.h"
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typedef struct PCIVGAState {
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    PCIDevice dev;
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    VGACommonState vga;
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} PCIVGAState;
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static const VMStateDescription vmstate_vga_pci = {
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    .name = "vga",
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    .version_id = 2,
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    .minimum_version_id = 2,
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    .minimum_version_id_old = 2,
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    .fields      = (VMStateField []) {
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        VMSTATE_PCI_DEVICE(dev, PCIVGAState),
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        VMSTATE_STRUCT(vga, PCIVGAState, 0, vmstate_vga_common, VGACommonState),
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        VMSTATE_END_OF_LIST()
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    }
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};
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static void vga_map(PCIDevice *pci_dev, int region_num,
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                    pcibus_t addr, pcibus_t size, int type)
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{
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    PCIVGAState *d = (PCIVGAState *)pci_dev;
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    VGACommonState *s = &d->vga;
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    cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
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    s->map_addr = addr;
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    s->map_end = addr + s->vram_size;
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    vga_dirty_log_start(s);
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}
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static void pci_vga_write_config(PCIDevice *d,
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                                 uint32_t address, uint32_t val, int len)
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{
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    PCIVGAState *pvs = container_of(d, PCIVGAState, dev);
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    VGACommonState *s = &pvs->vga;
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    pci_default_write_config(d, address, val, len);
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    if (s->map_addr && pvs->dev.io_regions[0].addr == -1)
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        s->map_addr = 0;
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}
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static int pci_vga_initfn(PCIDevice *dev)
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{
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     PCIVGAState *d = DO_UPCAST(PCIVGAState, dev, dev);
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     VGACommonState *s = &d->vga;
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     uint8_t *pci_conf = d->dev.config;
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     // vga + console init
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     vga_common_init(s, VGA_RAM_SIZE);
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     vga_init(s);
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     s->ds = graphic_console_init(s->update, s->invalidate,
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                                  s->screen_dump, s->text_update, s);
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     // dummy VGA (same as Bochs ID)
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     pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_QEMU);
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     pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_QEMU_VGA);
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     pci_config_set_class(pci_conf, PCI_CLASS_DISPLAY_VGA);
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     /* XXX: VGA_RAM_SIZE must be a power of two */
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     pci_register_bar(&d->dev, 0, VGA_RAM_SIZE,
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                      PCI_BASE_ADDRESS_MEM_PREFETCH, vga_map);
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     if (!dev->rom_bar) {
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         /* compatibility with pc-0.13 and older */
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         vga_init_vbe(s);
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     }
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     return 0;
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}
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int pci_vga_init(PCIBus *bus)
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{
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    pci_create_simple(bus, -1, "VGA");
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    return 0;
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}
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static PCIDeviceInfo vga_info = {
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    .qdev.name    = "VGA",
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    .qdev.size    = sizeof(PCIVGAState),
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    .qdev.vmsd    = &vmstate_vga_pci,
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    .init         = pci_vga_initfn,
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    .config_write = pci_vga_write_config,
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    .romfile      = "vgabios-stdvga.bin",
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};
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static void vga_register(void)
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{
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    pci_qdev_register(&vga_info);
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}
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device_init(vga_register);