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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2016 Intel Corporation
*/
#ifndef __INTEL_GGTT_FENCING_H__
#define __INTEL_GGTT_FENCING_H__
#include <linux/list.h>
#include <linux/types.h>
#include "i915_active.h"
struct drm_i915_gem_object;
struct i915_ggtt;
struct i915_vma;
struct intel_gt;
struct sg_table;
#define I965_FENCE_PAGE 4096UL
struct i915_fence_reg {
struct list_head link;
struct i915_ggtt *ggtt;
struct i915_vma *vma;
atomic_t pin_count;
struct i915_active active;
int id;
/**
* Whether the tiling parameters for the currently
* associated fence register have changed. Note that
* for the purposes of tracking tiling changes we also
* treat the unfenced register, the register slot that
* the object occupies whilst it executes a fenced
* command (such as BLT on gen2/3), as a "fence".
*/
bool dirty;
u32 start;
u32 size;
u32 tiling;
u32 stride;
};
struct i915_fence_reg *i915_reserve_fence(struct i915_ggtt *ggtt);
void i915_unreserve_fence(struct i915_fence_reg *fence);
void intel_ggtt_restore_fences(struct i915_ggtt *ggtt);
void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj,
struct sg_table *pages);
void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj,
struct sg_table *pages);
void intel_ggtt_init_fences(struct i915_ggtt *ggtt);
void intel_ggtt_fini_fences(struct i915_ggtt *ggtt);
void intel_gt_init_swizzling(struct intel_gt *gt);
#endif
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