diff options
Diffstat (limited to 'hw/vga-pci.c')
| -rw-r--r-- | hw/vga-pci.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/hw/vga-pci.c b/hw/vga-pci.c new file mode 100644 index 0000000000..6038cec00d --- /dev/null +++ b/hw/vga-pci.c @@ -0,0 +1,164 @@ +/* + * QEMU PCI 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.h" +#include "console.h" +#include "pc.h" +#include "pci.h" +#include "vga_int.h" +#include "pixel_ops.h" +#include "qemu-timer.h" +#include "kvm.h" + +typedef struct PCIVGAState { + PCIDevice dev; + VGACommonState vga; +} PCIVGAState; + +static void pci_vga_save(QEMUFile *f, void *opaque) +{ + PCIVGAState *s = opaque; + + pci_device_save(&s->dev, f); + vga_common_save(f, &s->vga); +} + +static int pci_vga_load(QEMUFile *f, void *opaque, int version_id) +{ + PCIVGAState *s = opaque; + int ret; + + if (version_id > 2) + return -EINVAL; + + if (version_id >= 2) { + ret = pci_device_load(&s->dev, f); + if (ret < 0) + return ret; + } + return vga_common_load(f, &s->vga, version_id); +} + +void vga_dirty_log_start(VGACommonState *s) +{ + if (kvm_enabled() && s->map_addr) + kvm_log_start(s->map_addr, s->map_end - s->map_addr); + + if (kvm_enabled() && s->lfb_vram_mapped) { + kvm_log_start(isa_mem_base + 0xa0000, 0x8000); + kvm_log_start(isa_mem_base + 0xa8000, 0x8000); + } +} + +static void vga_map(PCIDevice *pci_dev, int region_num, + uint32_t addr, uint32_t size, int type) +{ + PCIVGAState *d = (PCIVGAState *)pci_dev; + VGACommonState *s = &d->vga; + if (region_num == PCI_ROM_SLOT) { + cpu_register_physical_memory(addr, s->bios_size, s->bios_offset); + } else { + cpu_register_physical_memory(addr, s->vram_size, s->vram_offset); + s->map_addr = addr; + s->map_end = addr + s->vram_size; + vga_dirty_log_start(s); + } +} + +static void pci_vga_write_config(PCIDevice *d, + uint32_t address, uint32_t val, int len) +{ + PCIVGAState *pvs = container_of(d, PCIVGAState, dev); + VGACommonState *s = &pvs->vga; + + pci_default_write_config(d, address, val, len); + if (s->map_addr && pvs->dev.io_regions[0].addr == -1) + s->map_addr = 0; +} + +static int pci_vga_initfn(PCIDevice *dev) +{ + PCIVGAState *d = DO_UPCAST(PCIVGAState, dev, dev); + VGACommonState *s = &d->vga; + uint8_t *pci_conf = d->dev.config; + + // vga + console init + vga_common_init(s, VGA_RAM_SIZE); + vga_init(s); + register_savevm("vga", 0, 2, pci_vga_save, pci_vga_load, d); + + s->ds = graphic_console_init(s->update, s->invalidate, + s->screen_dump, s->text_update, s); + + // dummy VGA (same as Bochs ID) + pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_QEMU); + pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_QEMU_VGA); + pci_config_set_class(pci_conf, PCI_CLASS_DISPLAY_VGA); + pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type + + /* XXX: VGA_RAM_SIZE must be a power of two */ + pci_register_bar(&d->dev, 0, VGA_RAM_SIZE, + PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map); + + if (s->bios_size) { + unsigned int bios_total_size; + /* must be a power of two */ + bios_total_size = 1; + while (bios_total_size < s->bios_size) + bios_total_size <<= 1; + pci_register_bar(&d->dev, PCI_ROM_SLOT, bios_total_size, + PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map); + } + return 0; +} + +int pci_vga_init(PCIBus *bus, + unsigned long vga_bios_offset, int vga_bios_size) +{ + PCIDevice *dev; + + dev = pci_create("VGA", NULL); + qdev_prop_set_uint32(&dev->qdev, "bios-offset", vga_bios_offset); + qdev_prop_set_uint32(&dev->qdev, "bios-size", vga_bios_offset); + qdev_init(&dev->qdev); + + return 0; +} + +static PCIDeviceInfo vga_info = { + .qdev.name = "VGA", + .qdev.size = sizeof(PCIVGAState), + .init = pci_vga_initfn, + .config_write = pci_vga_write_config, + .qdev.props = (Property[]) { + DEFINE_PROP_HEX32("bios-offset", PCIVGAState, vga.bios_offset, 0), + DEFINE_PROP_HEX32("bios-size", PCIVGAState, vga.bios_size, 0), + DEFINE_PROP_END_OF_LIST(), + } +}; + +static void vga_register(void) +{ + pci_qdev_register(&vga_info); +} +device_init(vga_register); |