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-rw-r--r--hw/display/vga-pci.c215
1 files changed, 215 insertions, 0 deletions
diff --git a/hw/display/vga-pci.c b/hw/display/vga-pci.c
new file mode 100644
index 0000000000..05fa9bcb64
--- /dev/null
+++ b/hw/display/vga-pci.c
@@ -0,0 +1,215 @@
+/*
+ * 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 "hw/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);
+ vga_init(s, pci_address_space(dev), pci_address_space_io(dev), true);
+
+ s->con = graphic_console_init(s->update, s->invalidate,
+ s->screen_dump, s->text_update, 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, "vga.mmio", 4096);
+ memory_region_init_io(&d->ioport, &pci_vga_ioport_ops, d,
+ "vga ioports remapped", PCI_VGA_IOPORT_SIZE);
+ memory_region_init_io(&d->bochs, &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, 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)
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