diff options
| -rw-r--r-- | OvmfPkg/Include/IndustryStandard/Virtio10.h | 5 | ||||
| -rw-r--r-- | OvmfPkg/Include/IndustryStandard/VirtioGpu.h | 216 |
2 files changed, 221 insertions, 0 deletions
diff --git a/OvmfPkg/Include/IndustryStandard/Virtio10.h b/OvmfPkg/Include/IndustryStandard/Virtio10.h index de692c1d1e..4c9b62a3cf 100644 --- a/OvmfPkg/Include/IndustryStandard/Virtio10.h +++ b/OvmfPkg/Include/IndustryStandard/Virtio10.h @@ -18,6 +18,11 @@ #include <IndustryStandard/Virtio095.h>
//
+// Subsystem Device IDs (to be) introduced in VirtIo 1.0
+//
+#define VIRTIO_SUBSYSTEM_GPU_DEVICE 16
+
+//
// Structures for parsing the VirtIo 1.0 specific PCI capabilities from the
// config space
//
diff --git a/OvmfPkg/Include/IndustryStandard/VirtioGpu.h b/OvmfPkg/Include/IndustryStandard/VirtioGpu.h new file mode 100644 index 0000000000..9c3516e71e --- /dev/null +++ b/OvmfPkg/Include/IndustryStandard/VirtioGpu.h @@ -0,0 +1,216 @@ +/** @file
+
+ Virtio GPU Device specific type and macro definitions.
+
+ At the time of this writing, the Virtio 1.0 specification has not
+ incorporated the GPU device yet. The following work-in-progress specification
+ is used as basis for the implementation:
+
+ - https://lists.oasis-open.org/archives/virtio-dev/201605/msg00002.html
+ - https://www.kraxel.org/virtio/
+
+ This header file is minimal, and only defines the types and macros that are
+ necessary for the OvmfPkg implementation.
+
+ Copyright (C) 2016, Red Hat, Inc.
+
+ This program and the accompanying materials are licensed and made available
+ under the terms and conditions of the BSD License which accompanies this
+ distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
+ WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _VIRTIO_GPU_H_
+#define _VIRTIO_GPU_H_
+
+#include <IndustryStandard/Virtio.h>
+
+//
+// Queue number for sending control commands.
+//
+#define VIRTIO_GPU_CONTROL_QUEUE 0
+
+//
+// Command and response types.
+//
+typedef enum {
+ //
+ // Commands related to mode setup:
+ //
+ // - create/release a host-side 2D resource,
+ //
+ VirtioGpuCmdResourceCreate2d = 0x0101,
+ VirtioGpuCmdResourceUnref = 0x0102,
+ //
+ // - attach/detach guest RAM to/from a host-side 2D resource,
+ //
+ VirtioGpuCmdResourceAttachBacking = 0x0106,
+ VirtioGpuCmdResourceDetachBacking = 0x0107,
+ //
+ // - assign/unassign a host-side 2D resource to/from a scanout ("head").
+ //
+ VirtioGpuCmdSetScanout = 0x0103,
+
+ //
+ // Commands related to drawing:
+ //
+ // - transfer a guest RAM update to the host-side 2D resource (does not imply
+ // host display refresh),
+ //
+ VirtioGpuCmdTransferToHost2d = 0x0105,
+ //
+ // - trigger a host display refresh from the 2D resource.
+ //
+ VirtioGpuCmdResourceFlush = 0x0104,
+
+ //
+ // Success code for all of the above commands.
+ //
+ VirtioGpuRespOkNodata = 0x1100,
+} VIRTIO_GPU_CONTROL_TYPE;
+
+//
+// Common request/response header.
+//
+#define VIRTIO_GPU_FLAG_FENCE BIT0
+
+#pragma pack (1)
+typedef struct {
+ //
+ // The guest sets Type to VirtioGpuCmd* in the requests. The host sets Type
+ // to VirtioGpuResp* in the responses.
+ //
+ UINT32 Type;
+
+ //
+ // Fencing forces the host to complete the command before producing a
+ // response.
+ //
+ UINT32 Flags;
+ UINT64 FenceId;
+
+ //
+ // Unused.
+ //
+ UINT32 CtxId;
+ UINT32 Padding;
+} VIRTIO_GPU_CONTROL_HEADER;
+#pragma pack ()
+
+//
+// Rectangle structure used by several operations.
+//
+#pragma pack (1)
+typedef struct {
+ UINT32 X;
+ UINT32 Y;
+ UINT32 Width;
+ UINT32 Height;
+} VIRTIO_GPU_RECTANGLE;
+#pragma pack ()
+
+//
+// Request structure for VirtioGpuCmdResourceCreate2d.
+//
+typedef enum {
+ //
+ // 32-bit depth, BGRX component order, X component ignored.
+ //
+ VirtioGpuFormatB8G8R8X8Unorm = 2,
+} VIRTIO_GPU_FORMATS;
+
+#pragma pack (1)
+typedef struct {
+ VIRTIO_GPU_CONTROL_HEADER Header;
+ UINT32 ResourceId; // note: 0 is invalid
+ UINT32 Format; // from VIRTIO_GPU_FORMATS
+ UINT32 Width;
+ UINT32 Height;
+} VIRTIO_GPU_RESOURCE_CREATE_2D;
+#pragma pack ()
+
+//
+// Request structure for VirtioGpuCmdResourceUnref.
+//
+#pragma pack (1)
+typedef struct {
+ VIRTIO_GPU_CONTROL_HEADER Header;
+ UINT32 ResourceId;
+ UINT32 Padding;
+} VIRTIO_GPU_RESOURCE_UNREF;
+#pragma pack ()
+
+//
+// Request structure for VirtioGpuCmdResourceAttachBacking.
+//
+// The spec allows for a scatter-gather list, but for simplicity we hard-code a
+// single guest buffer.
+//
+#pragma pack (1)
+typedef struct {
+ UINT64 Addr;
+ UINT32 Length;
+ UINT32 Padding;
+} VIRTIO_GPU_MEM_ENTRY;
+
+typedef struct {
+ VIRTIO_GPU_CONTROL_HEADER Header;
+ UINT32 ResourceId;
+ UINT32 NrEntries; // number of entries: constant 1
+ VIRTIO_GPU_MEM_ENTRY Entry;
+} VIRTIO_GPU_RESOURCE_ATTACH_BACKING;
+#pragma pack ()
+
+//
+// Request structure for VirtioGpuCmdResourceDetachBacking.
+//
+#pragma pack (1)
+typedef struct {
+ VIRTIO_GPU_CONTROL_HEADER Header;
+ UINT32 ResourceId;
+ UINT32 Padding;
+} VIRTIO_GPU_RESOURCE_DETACH_BACKING;
+#pragma pack ()
+
+//
+// Request structure for VirtioGpuCmdSetScanout.
+//
+#pragma pack (1)
+typedef struct {
+ VIRTIO_GPU_CONTROL_HEADER Header;
+ VIRTIO_GPU_RECTANGLE Rectangle;
+ UINT32 ScanoutId;
+ UINT32 ResourceId;
+} VIRTIO_GPU_SET_SCANOUT;
+#pragma pack ()
+
+//
+// Request structure for VirtioGpuCmdTransferToHost2d.
+//
+#pragma pack (1)
+typedef struct {
+ VIRTIO_GPU_CONTROL_HEADER Header;
+ VIRTIO_GPU_RECTANGLE Rectangle;
+ UINT64 Offset;
+ UINT32 ResourceId;
+ UINT32 Padding;
+} VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D;
+#pragma pack ()
+
+//
+// Request structure for VirtioGpuCmdResourceFlush.
+//
+#pragma pack (1)
+typedef struct {
+ VIRTIO_GPU_CONTROL_HEADER Header;
+ VIRTIO_GPU_RECTANGLE Rectangle;
+ UINT32 ResourceId;
+ UINT32 Padding;
+} VIRTIO_GPU_RESOURCE_FLUSH;
+#pragma pack ()
+
+#endif // _VIRTIO_GPU_H_
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