dmub_hw_lock_mgr.h

 1/*
 2 * Copyright 2012-16 Advanced Micro Devices, Inc.
 3 *
 4 * Permission is hereby granted, free of charge, to any person obtaining a
 5 * copy of this software and associated documentation files (the "Software"),
 6 * to deal in the Software without restriction, including without limitation
 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 8 * and/or sell copies of the Software, and to permit persons to whom the
 9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: AMD
23 *
24 */
25
26#ifndef _DMUB_HW_LOCK_MGR_H_
27#define _DMUB_HW_LOCK_MGR_H_
28
29#include "dc_dmub_srv.h"
30#include "core_types.h"
31
32void dmub_hw_lock_mgr_cmd(struct dc_dmub_srv *dmub_srv,
33				bool lock,
34				union dmub_hw_lock_flags *hw_locks,
35				struct dmub_hw_lock_inst_flags *inst_flags);
36
37void dmub_hw_lock_mgr_inbox0_cmd(struct dc_dmub_srv *dmub_srv,
38		union dmub_inbox0_cmd_lock_hw hw_lock_cmd);
39
40/**
41 * should_use_dmub_inbox1_lock() - Checks if the DMCUB hardware lock via inbox1 should be used.
42 *
43 * @dc: pointer to DC object
44 * @link: optional pointer to the link object to check for enabled link features
45 *
46 * Return: true if the inbox1 lock should be used, false otherwise
47 */
48bool should_use_dmub_inbox1_lock(const struct dc *dc, const struct dc_link *link);
49bool dmub_hw_lock_mgr_does_link_require_lock(const struct dc *dc, const struct dc_link *link);
50bool dmub_hw_lock_mgr_does_context_require_lock(const struct dc *dc, const struct dc_state *context);
51
52#endif /*_DMUB_HW_LOCK_MGR_H_ */