diff options
| -rw-r--r-- | docs/specs/standard-vga.txt | 13 | ||||
| -rw-r--r-- | hw/display/vga-pci.c | 61 | ||||
| -rw-r--r-- | hw/display/vga.c | 4 |
3 files changed, 75 insertions, 3 deletions
diff --git a/docs/specs/standard-vga.txt b/docs/specs/standard-vga.txt index 8a4c1e9..f82773e 100644 --- a/docs/specs/standard-vga.txt +++ b/docs/specs/standard-vga.txt @@ -5,9 +5,10 @@ QEMU Standard VGA Exists in two variants, for isa and pci. command line switches: - -vga std [ picks isa for -M isapc, otherwise pci ] - -device VGA [ pci variant ] - -device isa-vga [ isa variant ] + -vga std [ picks isa for -M isapc, otherwise pci ] + -device VGA [ pci variant ] + -device isa-vga [ isa variant ] + -device secondary-vga [ legacy-free pci variant ] PCI spec @@ -31,9 +32,15 @@ PCI ROM Region: Holds the vgabios (qemu 0.14+). +The legacy-free variant has no ROM and has PCI_CLASS_DISPLAY_OTHER +instead of PCI_CLASS_DISPLAY_VGA. + + IO ports used ------------- +Doesn't apply to the legacy-free pci variant, use the MMIO bar instead. + 03c0 - 03df : standard vga ports 01ce : bochs vbe interface index port 01cf : bochs vbe interface data port (x86 only) diff --git a/hw/display/vga-pci.c b/hw/display/vga-pci.c index ad49156..0865dc4 100644 --- a/hw/display/vga-pci.c +++ b/hw/display/vga-pci.c @@ -179,12 +179,51 @@ static int pci_std_vga_initfn(PCIDevice *dev) return 0; } +static int pci_secondary_vga_initfn(PCIDevice *dev) +{ + PCIVGAState *d = DO_UPCAST(PCIVGAState, dev, dev); + VGACommonState *s = &d->vga; + + /* vga + console init */ + vga_common_init(s, OBJECT(dev), false); + s->con = graphic_console_init(DEVICE(dev), 0, s->hw_ops, s); + + /* mmio bar */ + memory_region_init(&d->mmio, OBJECT(dev), "vga.mmio", 4096); + memory_region_init_io(&d->ioport, OBJECT(dev), &pci_vga_ioport_ops, d, + "vga ioports remapped", PCI_VGA_IOPORT_SIZE); + memory_region_init_io(&d->bochs, OBJECT(dev), &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, 0, PCI_BASE_ADDRESS_MEM_PREFETCH, &s->vram); + pci_register_bar(&d->dev, 2, PCI_BASE_ADDRESS_SPACE_MEMORY, &d->mmio); + + return 0; +} + +static void pci_secondary_vga_reset(DeviceState *dev) +{ + PCIVGAState *d = DO_UPCAST(PCIVGAState, dev.qdev, dev); + + vga_common_reset(&d->vga); +} + 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 Property secondary_pci_properties[] = { + DEFINE_PROP_UINT32("vgamem_mb", PCIVGAState, vga.vram_size_mb, 16), + DEFINE_PROP_END_OF_LIST(), +}; + static void vga_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -201,6 +240,20 @@ static void vga_class_init(ObjectClass *klass, void *data) set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); } +static void secondary_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->init = pci_secondary_vga_initfn; + k->vendor_id = PCI_VENDOR_ID_QEMU; + k->device_id = PCI_DEVICE_ID_QEMU_VGA; + k->class_id = PCI_CLASS_DISPLAY_OTHER; + dc->vmsd = &vmstate_vga_pci; + dc->props = secondary_pci_properties; + dc->reset = pci_secondary_vga_reset; +} + static const TypeInfo vga_info = { .name = "VGA", .parent = TYPE_PCI_DEVICE, @@ -208,9 +261,17 @@ static const TypeInfo vga_info = { .class_init = vga_class_init, }; +static const TypeInfo secondary_info = { + .name = "secondary-vga", + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(PCIVGAState), + .class_init = secondary_class_init, +}; + static void vga_register_types(void) { type_register_static(&vga_info); + type_register_static(&secondary_info); } type_init(vga_register_types) diff --git a/hw/display/vga.c b/hw/display/vga.c index 8891e0a..c4c3238 100644 --- a/hw/display/vga.c +++ b/hw/display/vga.c @@ -171,6 +171,10 @@ static void vga_update_memory_access(VGACommonState *s) MemoryRegion *region, *old_region = s->chain4_alias; hwaddr base, offset, size; + if (s->legacy_address_space == NULL) { + return; + } + s->chain4_alias = NULL; if ((s->sr[VGA_SEQ_PLANE_WRITE] & VGA_SR02_ALL_PLANES) == |