Quelle  intel_global_state.h   Sprache: C

/* 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 intel_atomic_state;
struct intel_display;
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)->display.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, old_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, 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_commit;

struct intel_global_state {
 struct intel_global_obj *obj;
 struct intel_atomic_state *state;
 struct intel_global_commit *commit;
 struct kref ref;
 bool changed, serialized;
};

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 intel_display *display,
      struct intel_global_obj *obj,
      struct intel_global_state *state,
      const struct intel_global_state_funcs *funcs);
void intel_atomic_global_obj_cleanup(struct intel_display *display);

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);

int intel_atomic_global_state_setup_commit(struct intel_atomic_state *state);
void intel_atomic_global_state_commit_done(struct intel_atomic_state *state);
int intel_atomic_global_state_wait_for_dependencies(struct intel_atomic_state *state);

bool intel_atomic_global_state_is_serialized(struct intel_atomic_state *state);

#endif