/* SPDX-License-Identifier: MIT */
/* Copyright © 2025 Intel Corporation */

#ifndef __I915_GTT_VIEW_TYPES_H__
#define __I915_GTT_VIEW_TYPES_H__

#include <linux/types.h>

struct intel_remapped_plane_info {
        /* in gtt pages */
        u32 offset:31;
        u32 linear:1;
        union {
                /* in gtt pages for !linear */
                struct {
                        u16 width;
                        u16 height;
                        u16 src_stride;
                        u16 dst_stride;
                };

                /* in gtt pages for linear */
                u32 size;
        };
} __packed;

struct intel_rotation_info {
        struct intel_remapped_plane_info plane[2];
} __packed;

struct intel_partial_info {
        u64 offset;
        unsigned int size;
} __packed;

struct intel_remapped_info {
        struct intel_remapped_plane_info plane[4];
        /* in gtt pages */
        u32 plane_alignment;
} __packed;

enum i915_gtt_view_type {
        I915_GTT_VIEW_NORMAL = 0,
        I915_GTT_VIEW_ROTATED = sizeof(struct intel_rotation_info),
        I915_GTT_VIEW_PARTIAL = sizeof(struct intel_partial_info),
        I915_GTT_VIEW_REMAPPED = sizeof(struct intel_remapped_info),
};

struct i915_gtt_view {
        enum i915_gtt_view_type type;
        union {
                /* Members need to contain no holes/padding */
                struct intel_partial_info partial;
                struct intel_rotation_info rotated;
                struct intel_remapped_info remapped;
        };
};

#endif /* __I915_GTT_VIEW_TYPES_H__ */