| /* |
| * QEMU PCI VGA Emulator. |
| * |
| * see docs/specs/standard-vga.txt for virtual hardware specs. |
| * |
| * 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/pci/pci.h" |
| #include "vga_int.h" |
| #include "ui/pixel_ops.h" |
| #include "qemu/timer.h" |
| #include "hw/loader.h" |
| |
| #define PCI_VGA_IOPORT_OFFSET 0x400 |
| #define PCI_VGA_IOPORT_SIZE (0x3e0 - 0x3c0) |
| #define PCI_VGA_BOCHS_OFFSET 0x500 |
| #define PCI_VGA_BOCHS_SIZE (0x0b * 2) |
| #define PCI_VGA_MMIO_SIZE 0x1000 |
| |
| enum vga_pci_flags { |
| PCI_VGA_FLAG_ENABLE_MMIO = 1, |
| }; |
| |
| typedef struct PCIVGAState { |
| PCIDevice dev; |
| VGACommonState vga; |
| uint32_t flags; |
| MemoryRegion mmio; |
| MemoryRegion ioport; |
| MemoryRegion bochs; |
| } PCIVGAState; |
| |
| static const VMStateDescription vmstate_vga_pci = { |
| .name = "vga", |
| .version_id = 2, |
| .minimum_version_id = 2, |
| .minimum_version_id_old = 2, |
| .fields = (VMStateField []) { |
| VMSTATE_PCI_DEVICE(dev, PCIVGAState), |
| VMSTATE_STRUCT(vga, PCIVGAState, 0, vmstate_vga_common, VGACommonState), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static uint64_t pci_vga_ioport_read(void *ptr, hwaddr addr, |
| unsigned size) |
| { |
| PCIVGAState *d = ptr; |
| uint64_t ret = 0; |
| |
| switch (size) { |
| case 1: |
| ret = vga_ioport_read(&d->vga, addr); |
| break; |
| case 2: |
| ret = vga_ioport_read(&d->vga, addr); |
| ret |= vga_ioport_read(&d->vga, addr+1) << 8; |
| break; |
| } |
| return ret; |
| } |
| |
| static void pci_vga_ioport_write(void *ptr, hwaddr addr, |
| uint64_t val, unsigned size) |
| { |
| PCIVGAState *d = ptr; |
| |
| switch (size) { |
| case 1: |
| vga_ioport_write(&d->vga, addr + 0x3c0, val); |
| break; |
| case 2: |
| /* |
| * Update bytes in little endian order. Allows to update |
| * indexed registers with a single word write because the |
| * index byte is updated first. |
| */ |
| vga_ioport_write(&d->vga, addr + 0x3c0, val & 0xff); |
| vga_ioport_write(&d->vga, addr + 0x3c1, (val >> 8) & 0xff); |
| break; |
| } |
| } |
| |
| static const MemoryRegionOps pci_vga_ioport_ops = { |
| .read = pci_vga_ioport_read, |
| .write = pci_vga_ioport_write, |
| .valid.min_access_size = 1, |
| .valid.max_access_size = 4, |
| .impl.min_access_size = 1, |
| .impl.max_access_size = 2, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| }; |
| |
| static uint64_t pci_vga_bochs_read(void *ptr, hwaddr addr, |
| unsigned size) |
| { |
| PCIVGAState *d = ptr; |
| int index = addr >> 1; |
| |
| vbe_ioport_write_index(&d->vga, 0, index); |
| return vbe_ioport_read_data(&d->vga, 0); |
| } |
| |
| static void pci_vga_bochs_write(void *ptr, hwaddr addr, |
| uint64_t val, unsigned size) |
| { |
| PCIVGAState *d = ptr; |
| int index = addr >> 1; |
| |
| vbe_ioport_write_index(&d->vga, 0, index); |
| vbe_ioport_write_data(&d->vga, 0, val); |
| } |
| |
| static const MemoryRegionOps pci_vga_bochs_ops = { |
| .read = pci_vga_bochs_read, |
| .write = pci_vga_bochs_write, |
| .valid.min_access_size = 1, |
| .valid.max_access_size = 4, |
| .impl.min_access_size = 2, |
| .impl.max_access_size = 2, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| }; |
| |
| static int pci_std_vga_initfn(PCIDevice *dev) |
| { |
| PCIVGAState *d = DO_UPCAST(PCIVGAState, dev, dev); |
| VGACommonState *s = &d->vga; |
| |
| /* vga + console init */ |
| vga_common_init(s, OBJECT(dev)); |
| vga_init(s, OBJECT(dev), pci_address_space(dev), pci_address_space_io(dev), |
| true); |
| |
| s->con = graphic_console_init(DEVICE(dev), s->hw_ops, s); |
| |
| /* XXX: VGA_RAM_SIZE must be a power of two */ |
| pci_register_bar(&d->dev, 0, PCI_BASE_ADDRESS_MEM_PREFETCH, &s->vram); |
| |
| /* mmio bar for vga register access */ |
| if (d->flags & (1 << PCI_VGA_FLAG_ENABLE_MMIO)) { |
| memory_region_init(&d->mmio, NULL, "vga.mmio", 4096); |
| memory_region_init_io(&d->ioport, NULL, &pci_vga_ioport_ops, d, |
| "vga ioports remapped", PCI_VGA_IOPORT_SIZE); |
| memory_region_init_io(&d->bochs, NULL, &pci_vga_bochs_ops, d, |
| "bochs dispi interface", PCI_VGA_BOCHS_SIZE); |
| |
| memory_region_add_subregion(&d->mmio, PCI_VGA_IOPORT_OFFSET, |
| &d->ioport); |
| memory_region_add_subregion(&d->mmio, PCI_VGA_BOCHS_OFFSET, |
| &d->bochs); |
| pci_register_bar(&d->dev, 2, PCI_BASE_ADDRESS_SPACE_MEMORY, &d->mmio); |
| } |
| |
| if (!dev->rom_bar) { |
| /* compatibility with pc-0.13 and older */ |
| vga_init_vbe(s, OBJECT(dev), pci_address_space(dev)); |
| } |
| |
| return 0; |
| } |
| |
| static Property vga_pci_properties[] = { |
| DEFINE_PROP_UINT32("vgamem_mb", PCIVGAState, vga.vram_size_mb, 16), |
| DEFINE_PROP_BIT("mmio", PCIVGAState, flags, PCI_VGA_FLAG_ENABLE_MMIO, true), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static void vga_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
| |
| k->no_hotplug = 1; |
| k->init = pci_std_vga_initfn; |
| k->romfile = "vgabios-stdvga.bin"; |
| k->vendor_id = PCI_VENDOR_ID_QEMU; |
| k->device_id = PCI_DEVICE_ID_QEMU_VGA; |
| k->class_id = PCI_CLASS_DISPLAY_VGA; |
| dc->vmsd = &vmstate_vga_pci; |
| dc->props = vga_pci_properties; |
| } |
| |
| static const TypeInfo vga_info = { |
| .name = "VGA", |
| .parent = TYPE_PCI_DEVICE, |
| .instance_size = sizeof(PCIVGAState), |
| .class_init = vga_class_init, |
| }; |
| |
| static void vga_register_types(void) |
| { |
| type_register_static(&vga_info); |
| } |
| |
| type_init(vga_register_types) |