| /* |
| * Samsung Exynos SoC series NPU driver |
| * |
| * Copyright (c) 2017 Samsung Electronics Co., Ltd. |
| * http://www.samsung.com/ |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #ifndef _NPU_UTIL_MSGIDGEN_H_ |
| #define _NPU_UTIL_MSGIDGEN_H_ |
| |
| #include <linux/atomic.h> |
| #include <linux/time.h> |
| #include "npu-config.h" |
| |
| #define MSGID_POOL_MAGIC 0x18D718D7 |
| |
| /* Request ID pool */ |
| struct msgid_pool { |
| struct { |
| atomic_t occupied; |
| int pt_type; |
| void *ref; |
| #ifdef NPU_MAILBOX_MSG_ID_TIME_KEEPING |
| struct timeval tv_issued; |
| #endif |
| } pool[NPU_MAX_MSG_ID_CNT]; |
| u32 magic; |
| }; |
| |
| void msgid_pool_init(struct msgid_pool *handle); |
| int msgid_issue(struct msgid_pool *handle); |
| int msgid_issue_save_ref(struct msgid_pool *handle, int pt_type, void *ref); |
| void msgid_claim(struct msgid_pool *handle, const int msg_id); |
| void *msgid_claim_get_ref(struct msgid_pool *handle, const int msg_id, const int expected_type); |
| int msgid_get_pt_type(struct msgid_pool *handle, const int msg_id); |
| #endif |