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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2020 Intel Corporation
*/
#ifndef __INTEL_GLOBAL_STATE_H__
#define __INTEL_GLOBAL_STATE_H__
#include <linux/kref.h>
#include <linux/list.h>
struct drm_i915_private;
struct intel_atomic_state;
struct intel_global_obj;
struct intel_global_state;
struct intel_global_state_funcs {
struct intel_global_state *(*atomic_duplicate_state)(struct intel_global_obj *obj);
void (*atomic_destroy_state)(struct intel_global_obj *obj,
struct intel_global_state *state);
};
struct intel_global_obj {
struct list_head head;
struct intel_global_state *state;
const struct intel_global_state_funcs *funcs;
};
#define intel_for_each_global_obj(obj, dev_priv) \
list_for_each_entry(obj, &(dev_priv)->global_obj_list, head)
#define for_each_new_global_obj_in_state(__state, obj, new_obj_state, __i) \
for ((__i) = 0; \
(__i) < (__state)->num_global_objs && \
((obj) = (__state)->global_objs[__i].ptr, \
(new_obj_state) = (__state)->global_objs[__i].new_state, 1); \
(__i)++) \
for_each_if(obj)
#define for_each_old_global_obj_in_state(__state, obj, new_obj_state, __i) \
for ((__i) = 0; \
(__i) < (__state)->num_global_objs && \
((obj) = (__state)->global_objs[__i].ptr, \
(new_obj_state) = (__state)->global_objs[__i].old_state, 1); \
(__i)++) \
for_each_if(obj)
#define for_each_oldnew_global_obj_in_state(__state, obj, old_obj_state, new_obj_state, __i) \
for ((__i) = 0; \
(__i) < (__state)->num_global_objs && \
((obj) = (__state)->global_objs[__i].ptr, \
(old_obj_state) = (__state)->global_objs[__i].old_state, \
(new_obj_state) = (__state)->global_objs[__i].new_state, 1); \
(__i)++) \
for_each_if(obj)
struct intel_global_state {
struct intel_global_obj *obj;
struct intel_atomic_state *state;
struct kref ref;
bool changed;
};
struct __intel_global_objs_state {
struct intel_global_obj *ptr;
struct intel_global_state *state, *old_state, *new_state;
};
void intel_atomic_global_obj_init(struct drm_i915_private *dev_priv,
struct intel_global_obj *obj,
struct intel_global_state *state,
const struct intel_global_state_funcs *funcs);
void intel_atomic_global_obj_cleanup(struct drm_i915_private *dev_priv);
struct intel_global_state *
intel_atomic_get_global_obj_state(struct intel_atomic_state *state,
struct intel_global_obj *obj);
struct intel_global_state *
intel_atomic_get_old_global_obj_state(struct intel_atomic_state *state,
struct intel_global_obj *obj);
struct intel_global_state *
intel_atomic_get_new_global_obj_state(struct intel_atomic_state *state,
struct intel_global_obj *obj);
void intel_atomic_swap_global_state(struct intel_atomic_state *state);
void intel_atomic_clear_global_state(struct intel_atomic_state *state);
int intel_atomic_lock_global_state(struct intel_global_state *obj_state);
int intel_atomic_serialize_global_state(struct intel_global_state *obj_state);
#endif
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