Kernel: Put VirtIOGPU related types into a namespace

Kernel/Graphics/VirtIOGPU/Protocol.h

@@ -0,0 +1,153 @@
+/*
+ * Copyright (c) 2021, Sahan Fernando <sahan.h.fernando@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#define VIRTIO_GPU_MAX_SCANOUTS 16
+
+namespace Kernel::Graphics::VirtIOGPU::Protocol {
+
+// Specification equivalent: enum virtio_gpu_ctrl_type
+enum class CommandType : u32 {
+    /* 2d commands */
+    VIRTIO_GPU_CMD_GET_DISPLAY_INFO = 0x0100,
+    VIRTIO_GPU_CMD_RESOURCE_CREATE_2D,
+    VIRTIO_GPU_CMD_RESOURCE_UNREF,
+    VIRTIO_GPU_CMD_SET_SCANOUT,
+    VIRTIO_GPU_CMD_RESOURCE_FLUSH,
+    VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D,
+    VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING,
+    VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING,
+    VIRTIO_GPU_CMD_GET_CAPSET_INFO,
+    VIRTIO_GPU_CMD_GET_CAPSET,
+    VIRTIO_GPU_CMD_GET_EDID,
+
+    /* cursor commands */
+    VIRTIO_GPU_CMD_UPDATE_CURSOR = 0x0300,
+    VIRTIO_GPU_CMD_MOVE_CURSOR,
+
+    /* success responses */
+    VIRTIO_GPU_RESP_OK_NODATA = 0x1100,
+    VIRTIO_GPU_RESP_OK_DISPLAY_INFO,
+    VIRTIO_GPU_RESP_OK_CAPSET_INFO,
+    VIRTIO_GPU_RESP_OK_CAPSET,
+    VIRTIO_GPU_RESP_OK_EDID,
+
+    /* error responses */
+    VIRTIO_GPU_RESP_ERR_UNSPEC = 0x1200,
+    VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY,
+    VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID,
+    VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID,
+    VIRTIO_GPU_RESP_ERR_INVALID_CONTEXT_ID,
+    VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER,
+};
+
+// Specification equivalent: struct virtio_gpu_ctrl_hdr
+struct ControlHeader {
+    u32 type;
+    u32 flags;
+    u64 fence_id;
+    u32 context_id;
+    u32 padding;
+};
+
+// Specification equivalent: struct virtio_gpu_rect
+struct Rect {
+    u32 x;
+    u32 y;
+    u32 width;
+    u32 height;
+};
+
+// Specification equivalent: struct virtio_gpu_resp_display_info
+struct DisplayInfoResponse {
+    ControlHeader header;
+    // Specification equivalent: struct virtio_gpu_display_one
+    struct Display {
+        Rect rect;
+        u32 enabled;
+        u32 flags;
+    } scanout_modes[VIRTIO_GPU_MAX_SCANOUTS];
+};
+
+// Specification equivalent: enum virtio_gpu_formats
+enum class TextureFormat : u32 {
+    VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM = 1,
+    VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM = 2,
+    VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM = 3,
+    VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM = 4,
+
+    VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM = 67,
+    VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM = 68,
+
+    VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM = 121,
+    VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM = 134,
+};
+
+// Specification equivalent: struct virtio_gpu_resource_create_2d
+struct ResourceCreate2D {
+    ControlHeader header;
+    u32 resource_id;
+    u32 format;
+    u32 width;
+    u32 height;
+};
+
+// Specification equivalent: struct virtio_gpu_resource_unref
+struct ResourceUnref {
+    ControlHeader header;
+    u32 resource_id;
+    u32 padding;
+};
+
+// Specification equivalent: struct virtio_gpu_set_scanout
+struct SetScanOut {
+    ControlHeader header;
+    Rect rect;
+    u32 scanout_id;
+    u32 resource_id;
+};
+
+// Specification equivalent: struct virtio_gpu_mem_entry
+struct MemoryEntry {
+    u64 address;
+    u32 length;
+    u32 padding;
+};
+
+// Specification equivalent: struct virtio_gpu_resource_attach_backing
+struct ResourceAttachBacking {
+    ControlHeader header;
+    u32 resource_id;
+    u32 num_entries;
+    MemoryEntry entries[];
+};
+
+// Specification equivalent: struct virtio_gpu_resource_detach_backing
+struct ResourceDetachBacking {
+    ControlHeader header;
+    u32 resource_id;
+    u32 padding;
+};
+
+// Specification equivalent: struct virtio_gpu_transfer_to_host_2d
+struct TransferToHost2D {
+    ControlHeader header;
+    Rect rect;
+    u64 offset;
+    u32 resource_id;
+    u32 padding;
+};
+
+// Specification equivalent: struct virtio_gpu_resource_flush
+struct ResourceFlush {
+    ControlHeader header;
+    Rect rect;
+    u32 resource_id;
+    u32 padding;
+};
+
+}