123 lines
3.8 KiB
C
123 lines
3.8 KiB
C
/*
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* Filename: ve_mem_list.h
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* Version: 0.01alpha
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* Description: Video engine driver API, Don't modify it in user space.
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* License: GPLv2
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* Author : xyliu <xyliu@allwinnertech.com>
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* Date : 2016/04/13
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*
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* Copyright (C) 2015 Allwinnertech Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef _VE_MEM__LIST_H
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#define _VE_MEM__LIST_H
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#define ion_offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
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#define aw_container_of(aw_ptr, type, member) ({ \
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const typeof(((type *)0)->member)*__mptr = (aw_ptr); \
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(type *)((char *)__mptr - ion_offsetof(type, member)); })
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static inline void aw_prefetch(const void *x) {(void)x; }
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static inline void aw_prefetchw(const void *x) {(void)x; }
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#define AW_LIST_LOCATION1 ((void *) 0x00100100)
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#define AW_LIST_LOCATION2 ((void *) 0x00200200)
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struct aw_mem_list_head {
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struct aw_mem_list_head *aw_next, *aw_prev;
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};
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#define AW_MEM_LIST_HEAD_INIT(aw_name) { &(aw_name), &(aw_name) }
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#define VE_LIST_HEAD(aw_name) \
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struct aw_mem_list_head aw_name = AW_MEM_LIST_HEAD_INIT(aw_name)
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#define AW_MEM_INIT_LIST_HEAD(aw_ptr) do { \
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(aw_ptr)->aw_next = (aw_ptr); (aw_ptr)->aw_prev = (aw_ptr); \
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} while (0)
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/*
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* Insert a new entry between two known consecutive entries.
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*
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* This is only for internal list manipulation where we know
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* the aw_prev/aw_next entries already!
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*/
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static inline void __aw_list_add(struct aw_mem_list_head *newList,
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struct aw_mem_list_head *aw_prev,
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struct aw_mem_list_head *aw_next)
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{
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aw_next->aw_prev = newList;
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newList->aw_next = aw_next;
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newList->aw_prev = aw_prev;
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aw_prev->aw_next = newList;
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}
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/**
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* list_add - add a new entry
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* @new: new entry to be added
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* @head: list head to add it after
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*
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* Insert a new entry after the specified head.
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* This is good for implementing stacks.
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*/
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static inline void aw_mem_list_add(struct aw_mem_list_head *newList,
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struct aw_mem_list_head *head)
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{
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__aw_list_add(newList, head, head->aw_next);
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}
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/**
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* aw_mem_list_add_tail - add a new entry
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* @new: new entry to be added
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* @head: list head to add it before
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*
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* Insert a new entry before the specified head.
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* This is useful for implementing queues.
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*/
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static inline void aw_mem_list_add_tail(struct aw_mem_list_head *newList,
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struct aw_mem_list_head *head)
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{
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__aw_list_add(newList, head->aw_prev, head);
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}
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static inline void __aw_mem_list_del(struct aw_mem_list_head *aw_prev,
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struct aw_mem_list_head *aw_next)
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{
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aw_next->aw_prev = aw_prev;
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aw_prev->aw_next = aw_next;
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}
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static inline void aw_mem_list_del(struct aw_mem_list_head *entry)
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{
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__aw_mem_list_del(entry->aw_prev, entry->aw_next);
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entry->aw_next = AW_LIST_LOCATION1;
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entry->aw_prev = AW_LIST_LOCATION2;
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}
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#define aw_mem_list_entry(aw_ptr, type, member) aw_container_of(aw_ptr, type, member)
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#define aw_mem_list_for_each_safe(aw_pos, aw_n, aw_head) \
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for (aw_pos = (aw_head)->aw_next, aw_n = aw_pos->aw_next; aw_pos != (aw_head); \
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aw_pos = aw_n, aw_n = aw_pos->aw_next)
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#define aw_mem_list_for_each_entry(aw_pos, aw_head, member) \
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for (aw_pos = aw_mem_list_entry((aw_head)->aw_next, typeof(*aw_pos), member); \
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aw_prefetch(aw_pos->member.aw_next), &aw_pos->member != (aw_head); \
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aw_pos = aw_mem_list_entry(aw_pos->member.aw_next, typeof(*aw_pos), member))
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#endif
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