1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2020 Intel Corporation 4 */ 5 6 #ifndef __INTEL_GLOBAL_STATE_H__ 7 #define __INTEL_GLOBAL_STATE_H__ 8 9 #include <linux/kref.h> 10 #include <linux/list.h> 11 12 struct drm_i915_private; 13 struct intel_atomic_state; 14 struct intel_global_obj; 15 struct intel_global_state; 16 17 struct intel_global_state_funcs { 18 struct intel_global_state *(*atomic_duplicate_state)(struct intel_global_obj *obj); 19 void (*atomic_destroy_state)(struct intel_global_obj *obj, 20 struct intel_global_state *state); 21 }; 22 23 struct intel_global_obj { 24 struct list_head head; 25 struct intel_global_state *state; 26 const struct intel_global_state_funcs *funcs; 27 }; 28 29 #define intel_for_each_global_obj(obj, dev_priv) \ 30 list_for_each_entry(obj, &(dev_priv)->display.global.obj_list, head) 31 32 #define for_each_new_global_obj_in_state(__state, obj, new_obj_state, __i) \ 33 for ((__i) = 0; \ 34 (__i) < (__state)->num_global_objs && \ 35 ((obj) = (__state)->global_objs[__i].ptr, \ 36 (new_obj_state) = (__state)->global_objs[__i].new_state, 1); \ 37 (__i)++) \ 38 for_each_if(obj) 39 40 #define for_each_old_global_obj_in_state(__state, obj, old_obj_state, __i) \ 41 for ((__i) = 0; \ 42 (__i) < (__state)->num_global_objs && \ 43 ((obj) = (__state)->global_objs[__i].ptr, \ 44 (old_obj_state) = (__state)->global_objs[__i].old_state, 1); \ 45 (__i)++) \ 46 for_each_if(obj) 47 48 #define for_each_oldnew_global_obj_in_state(__state, obj, old_obj_state, new_obj_state, __i) \ 49 for ((__i) = 0; \ 50 (__i) < (__state)->num_global_objs && \ 51 ((obj) = (__state)->global_objs[__i].ptr, \ 52 (old_obj_state) = (__state)->global_objs[__i].old_state, \ 53 (new_obj_state) = (__state)->global_objs[__i].new_state, 1); \ 54 (__i)++) \ 55 for_each_if(obj) 56 57 struct intel_global_commit; 58 59 struct intel_global_state { 60 struct intel_global_obj *obj; 61 struct intel_atomic_state *state; 62 struct intel_global_commit *commit; 63 struct kref ref; 64 bool changed, serialized; 65 }; 66 67 struct __intel_global_objs_state { 68 struct intel_global_obj *ptr; 69 struct intel_global_state *state, *old_state, *new_state; 70 }; 71 72 void intel_atomic_global_obj_init(struct drm_i915_private *dev_priv, 73 struct intel_global_obj *obj, 74 struct intel_global_state *state, 75 const struct intel_global_state_funcs *funcs); 76 void intel_atomic_global_obj_cleanup(struct drm_i915_private *dev_priv); 77 78 struct intel_global_state * 79 intel_atomic_get_global_obj_state(struct intel_atomic_state *state, 80 struct intel_global_obj *obj); 81 struct intel_global_state * 82 intel_atomic_get_old_global_obj_state(struct intel_atomic_state *state, 83 struct intel_global_obj *obj); 84 struct intel_global_state * 85 intel_atomic_get_new_global_obj_state(struct intel_atomic_state *state, 86 struct intel_global_obj *obj); 87 88 void intel_atomic_swap_global_state(struct intel_atomic_state *state); 89 void intel_atomic_clear_global_state(struct intel_atomic_state *state); 90 int intel_atomic_lock_global_state(struct intel_global_state *obj_state); 91 int intel_atomic_serialize_global_state(struct intel_global_state *obj_state); 92 93 int intel_atomic_global_state_setup_commit(struct intel_atomic_state *state); 94 void intel_atomic_global_state_commit_done(struct intel_atomic_state *state); 95 int intel_atomic_global_state_wait_for_dependencies(struct intel_atomic_state *state); 96 97 bool intel_atomic_global_state_is_serialized(struct intel_atomic_state *state); 98 99 #endif 100