[PATCH v2 2/5] Revert "OvmfPkg/QemuVideoDxe: VMWare SVGA device support"

[yuchenlin@synology.com]

From: yuchenlin <yuchenlin@synology.com>

This reverts commit c137d95081690d4877fbeb5f1856972e84ac32f2.

The VMWare SVGA model now -- since commit 104bd1dc70 in QEMU --
falls back to stdvga (that is, Bochs) if we don't setup VMWare SVGA
FIFO.

To simplify QemuVideoDxe, we don't intend to implement the VMWare SVGA
FIFO setup feature. It means our current VMW SVGA driver code is
basically dead. To simplify the problem, we will replace the old
VMWare SVGA driver to Bochs interface. It should work on all QEMU
version.

The first step for using Bochs interface is to revert old driver.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: yuchenlin <yuchenlin@synology.com>
---
 OvmfPkg/QemuVideoDxe/Driver.c     | 135 +------------------------
 OvmfPkg/QemuVideoDxe/Gop.c        |  65 +------------
 OvmfPkg/QemuVideoDxe/Initialize.c | 157 ------------------------------
 OvmfPkg/QemuVideoDxe/Qemu.h       |  29 ------
 4 files changed, 7 insertions(+), 379 deletions(-)

diff --git a/OvmfPkg/QemuVideoDxe/Driver.c b/OvmfPkg/QemuVideoDxe/Driver.c
index 73eb2cad05..2304afd1e6 100644
--- a/OvmfPkg/QemuVideoDxe/Driver.c
+++ b/OvmfPkg/QemuVideoDxe/Driver.c
@@ -14,10 +14,8 @@
 
 **/
 
-#include <IndustryStandard/VmwareSvga.h>
-#include <IndustryStandard/Acpi.h>
 #include "Qemu.h"
-#include "UnalignedIoInternal.h"
+#include <IndustryStandard/Acpi.h>
 
 EFI_DRIVER_BINDING_PROTOCOL gQemuVideoDriverBinding = {
   QemuVideoControllerDriverSupported,
@@ -71,12 +69,6 @@ QEMU_VIDEO_CARD gQemuVideoCardList[] = {
         0x1050,
         QEMU_VIDEO_BOCHS_MMIO,
         L"QEMU VirtIO VGA"
-    },{
-        PCI_CLASS_DISPLAY_VGA,
-        VMWARE_PCI_VENDOR_ID_VMWARE,
-        VMWARE_PCI_DEVICE_ID_VMWARE_SVGA2,
-        QEMU_VIDEO_VMWARE_SVGA,
-        L"QEMU VMWare SVGA"
     },{
         0 /* end of list */
     }
@@ -264,7 +256,6 @@ QemuVideoControllerDriverStart (
     goto ClosePciIo;
   }
   Private->Variant = Card->Variant;
-  Private->FrameBufferVramBarIndex = PCI_BAR_IDX0;
 
   //
   // IsQxl is based on the detected Card->Variant, which at a later point might
@@ -339,58 +330,6 @@ QemuVideoControllerDriverStart (
     }
   }
 
-  //
-  // Check if accessing Vmware SVGA interface works
-  //
-  if (Private->Variant == QEMU_VIDEO_VMWARE_SVGA) {
-    EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *IoDesc;
-    UINT32                            TargetId;
-    UINT32                            SvgaIdRead;
-
-    IoDesc = NULL;
-    Status = Private->PciIo->GetBarAttributes (
-                               Private->PciIo,
-                               PCI_BAR_IDX0,
-                               NULL,
-                               (VOID**) &IoDesc
-                               );
-    if (EFI_ERROR (Status) ||
-        IoDesc->ResType != ACPI_ADDRESS_SPACE_TYPE_IO ||
-        IoDesc->AddrRangeMin > MAX_UINT16 + 1 - (VMWARE_SVGA_VALUE_PORT + 4)) {
-      if (IoDesc != NULL) {
-        FreePool (IoDesc);
-      }
-      Status = EFI_DEVICE_ERROR;
-      goto RestoreAttributes;
-    }
-    Private->VmwareSvgaBasePort = (UINT16) IoDesc->AddrRangeMin;
-    FreePool (IoDesc);
-
-    TargetId = VMWARE_SVGA_ID_2;
-    while (TRUE) {
-      VmwareSvgaWrite (Private, VmwareSvgaRegId, TargetId);
-      SvgaIdRead = VmwareSvgaRead (Private, VmwareSvgaRegId);
-      if ((SvgaIdRead == TargetId) || (TargetId <= VMWARE_SVGA_ID_0)) {
-        break;
-      }
-      TargetId--;
-    }
-
-    if (SvgaIdRead != TargetId) {
-      DEBUG ((
-        DEBUG_ERROR,
-        "QemuVideo: QEMU_VIDEO_VMWARE_SVGA ID mismatch "
-        "(got 0x%x, base address 0x%x)\n",
-        SvgaIdRead,
-        Private->VmwareSvgaBasePort
-        ));
-      Status = EFI_DEVICE_ERROR;
-      goto RestoreAttributes;
-    }
-
-    Private->FrameBufferVramBarIndex = PCI_BAR_IDX1;
-  }
-
   //
   // Get ParentDevicePath
   //
@@ -446,9 +385,6 @@ QemuVideoControllerDriverStart (
   case QEMU_VIDEO_BOCHS:
     Status = QemuVideoBochsModeSetup (Private, IsQxl);
     break;
-  case QEMU_VIDEO_VMWARE_SVGA:
-    Status = QemuVideoVmwareSvgaModeSetup (Private);
-    break;
   default:
     ASSERT (FALSE);
     Status = EFI_DEVICE_ERROR;
@@ -510,9 +446,6 @@ DestructQemuVideoGraphics:
 
 FreeModeData:
   FreePool (Private->ModeData);
-  if (Private->VmwareSvgaModeInfo != NULL) {
-    FreePool (Private->VmwareSvgaModeInfo);
-  }
 
 UninstallGopDevicePath:
   gBS->UninstallProtocolInterface (Private->Handle,
@@ -634,9 +567,6 @@ QemuVideoControllerDriverStop (
         );
 
   FreePool (Private->ModeData);
-  if (Private->VmwareSvgaModeInfo != NULL) {
-    FreePool (Private->VmwareSvgaModeInfo);
-  }
   gBS->UninstallProtocolInterface (Private->Handle,
          &gEfiDevicePathProtocolGuid, Private->GopDevicePath);
   FreePool (Private->GopDevicePath);
@@ -834,7 +764,7 @@ ClearScreen (
   Private->PciIo->Mem.Write (
                         Private->PciIo,
                         EfiPciIoWidthFillUint32,
-                        Private->FrameBufferVramBarIndex,
+                        0,
                         0,
                         0x400000 >> 2,
                         &Color
@@ -971,38 +901,6 @@ BochsRead (
   return Data;
 }
 
-VOID
-VmwareSvgaWrite (
-  QEMU_VIDEO_PRIVATE_DATA   *Private,
-  UINT16                    Register,
-  UINT32                    Value
-  )
-{
-  UnalignedIoWrite32 (
-    Private->VmwareSvgaBasePort + VMWARE_SVGA_INDEX_PORT,
-    Register
-    );
-  UnalignedIoWrite32 (
-    Private->VmwareSvgaBasePort + VMWARE_SVGA_VALUE_PORT,
-    Value
-    );
-}
-
-UINT32
-VmwareSvgaRead (
-  QEMU_VIDEO_PRIVATE_DATA   *Private,
-  UINT16                    Register
-  )
-{
-  UnalignedIoWrite32 (
-    Private->VmwareSvgaBasePort + VMWARE_SVGA_INDEX_PORT,
-    Register
-    );
-  return UnalignedIoRead32 (
-           Private->VmwareSvgaBasePort + VMWARE_SVGA_VALUE_PORT
-           );
-}
-
 VOID
 VgaOutb (
   QEMU_VIDEO_PRIVATE_DATA  *Private,
@@ -1057,35 +955,6 @@ InitializeBochsGraphicsMode (
   ClearScreen (Private);
 }
 
-VOID
-InitializeVmwareSvgaGraphicsMode (
-  QEMU_VIDEO_PRIVATE_DATA  *Private,
-  QEMU_VIDEO_BOCHS_MODES   *ModeData
-  )
-{
-  UINT32 Capabilities;
-
-  VmwareSvgaWrite (Private, VmwareSvgaRegWidth, ModeData->Width);
-  VmwareSvgaWrite (Private, VmwareSvgaRegHeight, ModeData->Height);
-
-  Capabilities = VmwareSvgaRead (
-                   Private,
-                   VmwareSvgaRegCapabilities
-                   );
-  if ((Capabilities & VMWARE_SVGA_CAP_8BIT_EMULATION) != 0) {
-    VmwareSvgaWrite (
-      Private,
-      VmwareSvgaRegBitsPerPixel,
-      ModeData->ColorDepth
-      );
-  }
-
-  VmwareSvgaWrite (Private, VmwareSvgaRegEnable, 1);
-
-  SetDefaultPalette (Private);
-  ClearScreen (Private);
-}
-
 EFI_STATUS
 EFIAPI
 InitializeQemuVideo (
diff --git a/OvmfPkg/QemuVideoDxe/Gop.c b/OvmfPkg/QemuVideoDxe/Gop.c
index c9941ef138..d490fa7a2e 100644
--- a/OvmfPkg/QemuVideoDxe/Gop.c
+++ b/OvmfPkg/QemuVideoDxe/Gop.c
@@ -13,7 +13,6 @@
 
 **/
 
-#include <IndustryStandard/VmwareSvga.h>
 #include "Qemu.h"
 
 STATIC
@@ -79,46 +78,6 @@ QemuVideoCompleteModeData (
   return EFI_SUCCESS;
 }
 
-STATIC
-EFI_STATUS
-QemuVideoVmwareSvgaCompleteModeData (
-  IN  QEMU_VIDEO_PRIVATE_DATA           *Private,
-  OUT EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *Mode
-  )
-{
-  EFI_STATUS                            Status;
-  EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  *Info;
-  EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR     *FrameBufDesc;
-  UINT32                                BytesPerLine, FbOffset, BytesPerPixel;
-
-  Info = Mode->Info;
-  CopyMem (Info, &Private->VmwareSvgaModeInfo[Mode->Mode], sizeof (*Info));
-  BytesPerPixel = Private->ModeData[Mode->Mode].ColorDepth / 8;
-  BytesPerLine = Info->PixelsPerScanLine * BytesPerPixel;
-
-  FbOffset = VmwareSvgaRead (Private, VmwareSvgaRegFbOffset);
-
-  Status = Private->PciIo->GetBarAttributes (
-                             Private->PciIo,
-                             PCI_BAR_IDX1,
-                             NULL,
-                             (VOID**) &FrameBufDesc
-                             );
-  if (EFI_ERROR (Status)) {
-    return EFI_DEVICE_ERROR;
-  }
-
-  Mode->FrameBufferBase = FrameBufDesc->AddrRangeMin + FbOffset;
-  Mode->FrameBufferSize = BytesPerLine * Info->VerticalResolution;
-  Mode->FrameBufferSize = EFI_PAGES_TO_SIZE (
-                            EFI_SIZE_TO_PAGES (Mode->FrameBufferSize)
-                            );
-
-  FreePool (FrameBufDesc);
-  return Status;
-}
-
-
 //
 // Graphics Output Protocol Member Functions
 //
@@ -167,14 +126,10 @@ Routine Description:
 
   *SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);
 
-  if (Private->Variant == QEMU_VIDEO_VMWARE_SVGA) {
-    CopyMem (*Info, &Private->VmwareSvgaModeInfo[ModeNumber], sizeof (**Info));
-  } else {
-    ModeData = &Private->ModeData[ModeNumber];
-    (*Info)->HorizontalResolution = ModeData->HorizontalResolution;
-    (*Info)->VerticalResolution   = ModeData->VerticalResolution;
-    QemuVideoCompleteModeInfo (ModeData, *Info);
-  }
+  ModeData = &Private->ModeData[ModeNumber];
+  (*Info)->HorizontalResolution = ModeData->HorizontalResolution;
+  (*Info)->VerticalResolution   = ModeData->VerticalResolution;
+  QemuVideoCompleteModeInfo (ModeData, *Info);
 
   return EFI_SUCCESS;
 }
@@ -224,12 +179,6 @@ Routine Description:
   case QEMU_VIDEO_BOCHS:
     InitializeBochsGraphicsMode (Private, &QemuVideoBochsModes[ModeData->InternalModeIndex]);
     break;
-  case QEMU_VIDEO_VMWARE_SVGA:
-    InitializeVmwareSvgaGraphicsMode (
-      Private,
-      &QemuVideoBochsModes[ModeData->InternalModeIndex]
-      );
-    break;
   default:
     ASSERT (FALSE);
     return EFI_DEVICE_ERROR;
@@ -240,11 +189,7 @@ Routine Description:
   This->Mode->Info->VerticalResolution = ModeData->VerticalResolution;
   This->Mode->SizeOfInfo = sizeof(EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);
 
-  if (Private->Variant == QEMU_VIDEO_VMWARE_SVGA) {
-    QemuVideoVmwareSvgaCompleteModeData (Private, This->Mode);
-  } else {
-    QemuVideoCompleteModeData (Private, This->Mode);
-  }
+  QemuVideoCompleteModeData (Private, This->Mode);
 
   //
   // Re-initialize the frame buffer configure when mode changes.
diff --git a/OvmfPkg/QemuVideoDxe/Initialize.c b/OvmfPkg/QemuVideoDxe/Initialize.c
index 357124d628..d5d8cfef96 100644
--- a/OvmfPkg/QemuVideoDxe/Initialize.c
+++ b/OvmfPkg/QemuVideoDxe/Initialize.c
@@ -13,7 +13,6 @@
 
 **/
 
-#include <IndustryStandard/VmwareSvga.h>
 #include "Qemu.h"
 
 
@@ -347,159 +346,3 @@ 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;
-}
diff --git a/OvmfPkg/QemuVideoDxe/Qemu.h b/OvmfPkg/QemuVideoDxe/Qemu.h
index bc49f867a4..d7da761705 100644
--- a/OvmfPkg/QemuVideoDxe/Qemu.h
+++ b/OvmfPkg/QemuVideoDxe/Qemu.h
@@ -92,7 +92,6 @@ typedef enum {
   QEMU_VIDEO_CIRRUS_5446,
   QEMU_VIDEO_BOCHS,
   QEMU_VIDEO_BOCHS_MMIO,
-  QEMU_VIDEO_VMWARE_SVGA,
 } QEMU_VIDEO_VARIANT;
 
 typedef struct {
@@ -117,13 +116,10 @@ typedef struct {
   //
   UINTN                                 MaxMode;
   QEMU_VIDEO_MODE_DATA                  *ModeData;
-  EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  *VmwareSvgaModeInfo;
 
   QEMU_VIDEO_VARIANT                    Variant;
   FRAME_BUFFER_CONFIGURE                *FrameBufferBltConfigure;
   UINTN                                 FrameBufferBltConfigureSize;
-  UINT8                                 FrameBufferVramBarIndex;
-  UINT16                                VmwareSvgaBasePort;
 } QEMU_VIDEO_PRIVATE_DATA;
 
 ///
@@ -507,34 +503,9 @@ QemuVideoBochsModeSetup (
   BOOLEAN                  IsQxl
   );
 
-EFI_STATUS
-QemuVideoVmwareSvgaModeSetup (
-  QEMU_VIDEO_PRIVATE_DATA *Private
-  );
-
 VOID
 InstallVbeShim (
   IN CONST CHAR16         *CardName,
   IN EFI_PHYSICAL_ADDRESS FrameBufferBase
   );
-
-VOID
-VmwareSvgaWrite (
-  QEMU_VIDEO_PRIVATE_DATA *Private,
-  UINT16                  Register,
-  UINT32                  Value
-  );
-
-UINT32
-VmwareSvgaRead (
-  QEMU_VIDEO_PRIVATE_DATA *Private,
-  UINT16                  Register
-  );
-
-VOID
-InitializeVmwareSvgaGraphicsMode (
-  QEMU_VIDEO_PRIVATE_DATA  *Private,
-  QEMU_VIDEO_BOCHS_MODES   *ModeData
-  );
-
 #endif
-- 
2.18.0