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Reapply "OvmfPkg/QemuVideoDxe: VMWare SVGA device support"

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This reverts commit 98856a724c, reapplying
c137d95081.

Note that the commit now being reverted is technically correct; the only
reason we're reverting it is because it should not have been pushed past
the Soft Feature Freeze for the edk2-stable201811 tag.

Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Julien Grall <julien.grall@linaro.org>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: yuchenlin <yuchenlin@synology.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1319
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: yuchenlin <yuchenlin@synology.com>
This commit is contained in:
Laszlo Ersek
2018-11-09 20:15:31 +01:00
parent 615c2c766e
commit 2e77f0e7b5
4 changed files with 379 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

157
OvmfPkg/QemuVideoDxe/Initialize.c
View File

@@ -13,6 +13,7 @@
**/
#include <IndustryStandard/VmwareSvga.h>
#include "Qemu.h"
@@ -346,3 +347,159 @@ QemuVideoBochsModeSetup (
return EFI_SUCCESS;
}
EFI_STATUS
QemuVideoVmwareSvgaModeSetup (
QEMU_VIDEO_PRIVATE_DATA *Private
)
{
EFI_STATUS Status;
UINT32 FbSize;
UINT32 MaxWidth, MaxHeight;
UINT32 Capabilities;
UINT32 BitsPerPixel;
UINT32 Index;
QEMU_VIDEO_MODE_DATA *ModeData;
QEMU_VIDEO_BOCHS_MODES *VideoMode;
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *ModeInfo;
VmwareSvgaWrite (Private, VmwareSvgaRegEnable, 0);
Private->ModeData =
AllocatePool (sizeof (Private->ModeData[0]) * QEMU_VIDEO_BOCHS_MODE_COUNT);
if (Private->ModeData == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto ModeDataAllocError;
}
Private->VmwareSvgaModeInfo =
AllocatePool (
sizeof (Private->VmwareSvgaModeInfo[0]) * QEMU_VIDEO_BOCHS_MODE_COUNT
);
if (Private->VmwareSvgaModeInfo == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto ModeInfoAllocError;
}
FbSize = VmwareSvgaRead (Private, VmwareSvgaRegFbSize);
MaxWidth = VmwareSvgaRead (Private, VmwareSvgaRegMaxWidth);
MaxHeight = VmwareSvgaRead (Private, VmwareSvgaRegMaxHeight);
Capabilities = VmwareSvgaRead (Private, VmwareSvgaRegCapabilities);
if ((Capabilities & VMWARE_SVGA_CAP_8BIT_EMULATION) != 0) {
BitsPerPixel = VmwareSvgaRead (
Private,
VmwareSvgaRegHostBitsPerPixel
);
VmwareSvgaWrite (
Private,
VmwareSvgaRegBitsPerPixel,
BitsPerPixel
);
} else {
BitsPerPixel = VmwareSvgaRead (
Private,
VmwareSvgaRegBitsPerPixel
);
}
if (FbSize == 0 ||
MaxWidth == 0 ||
MaxHeight == 0 ||
BitsPerPixel == 0 ||
BitsPerPixel % 8 != 0) {
Status = EFI_DEVICE_ERROR;
goto Rollback;
}
ModeData = Private->ModeData;
ModeInfo = Private->VmwareSvgaModeInfo;
VideoMode = &QemuVideoBochsModes[0];
for (Index = 0; Index < QEMU_VIDEO_BOCHS_MODE_COUNT; Index++) {
UINTN RequiredFbSize;
RequiredFbSize = (UINTN) VideoMode->Width * VideoMode->Height *
(BitsPerPixel / 8);
if (RequiredFbSize <= FbSize &&
VideoMode->Width <= MaxWidth &&
VideoMode->Height <= MaxHeight) {
UINT32 BytesPerLine;
UINT32 RedMask, GreenMask, BlueMask, PixelMask;
VmwareSvgaWrite (
Private,
VmwareSvgaRegWidth,
VideoMode->Width
);
VmwareSvgaWrite (
Private,
VmwareSvgaRegHeight,
VideoMode->Height
);
ModeData->InternalModeIndex = Index;
ModeData->HorizontalResolution = VideoMode->Width;
ModeData->VerticalResolution = VideoMode->Height;
ModeData->ColorDepth = BitsPerPixel;
//
// Setting VmwareSvgaRegWidth/VmwareSvgaRegHeight actually changes
// the device's display mode, so we save all properties of each mode up
// front to avoid inadvertent mode changes later.
//
ModeInfo->Version = 0;
ModeInfo->HorizontalResolution = ModeData->HorizontalResolution;
ModeInfo->VerticalResolution = ModeData->VerticalResolution;
ModeInfo->PixelFormat = PixelBitMask;
RedMask = VmwareSvgaRead (Private, VmwareSvgaRegRedMask);
ModeInfo->PixelInformation.RedMask = RedMask;
GreenMask = VmwareSvgaRead (Private, VmwareSvgaRegGreenMask);
ModeInfo->PixelInformation.GreenMask = GreenMask;
BlueMask = VmwareSvgaRead (Private, VmwareSvgaRegBlueMask);
ModeInfo->PixelInformation.BlueMask = BlueMask;
//
// Reserved mask is whatever bits in the pixel not containing RGB data,
// so start with binary 1s for every bit in the pixel, then mask off
// bits already used for RGB. Special case 32 to avoid undefined
// behaviour in the shift.
//
if (BitsPerPixel == 32) {
if (BlueMask == 0xff && GreenMask == 0xff00 && RedMask == 0xff0000) {
ModeInfo->PixelFormat = PixelBlueGreenRedReserved8BitPerColor;
} else if (BlueMask == 0xff0000 &&
GreenMask == 0xff00 &&
RedMask == 0xff) {
ModeInfo->PixelFormat = PixelRedGreenBlueReserved8BitPerColor;
}
PixelMask = MAX_UINT32;
} else {
PixelMask = (1u << BitsPerPixel) - 1;
}
ModeInfo->PixelInformation.ReservedMask =
PixelMask & ~(RedMask | GreenMask | BlueMask);
BytesPerLine = VmwareSvgaRead (Private, VmwareSvgaRegBytesPerLine);
ModeInfo->PixelsPerScanLine = BytesPerLine / (BitsPerPixel / 8);
ModeData++;
ModeInfo++;
}
VideoMode++;
}
Private->MaxMode = ModeData - Private->ModeData;
return EFI_SUCCESS;
Rollback:
FreePool (Private->VmwareSvgaModeInfo);
Private->VmwareSvgaModeInfo = NULL;
ModeInfoAllocError:
FreePool (Private->ModeData);
Private->ModeData = NULL;
ModeDataAllocError:
return Status;
}