1 /*
2  * Copyright 2019 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 #include "dmub_hw_lock_mgr.h"
27 #include "dc_dmub_srv.h"
28 #include "dc_types.h"
29 #include "core_types.h"
30 
dmub_hw_lock_mgr_cmd(struct dc_dmub_srv * dmub_srv,bool lock,union dmub_hw_lock_flags * hw_locks,struct dmub_hw_lock_inst_flags * inst_flags)31 void dmub_hw_lock_mgr_cmd(struct dc_dmub_srv *dmub_srv,
32 				bool lock,
33 				union dmub_hw_lock_flags *hw_locks,
34 				struct dmub_hw_lock_inst_flags *inst_flags)
35 {
36 	union dmub_rb_cmd cmd;
37 
38 	memset(&cmd, 0, sizeof(cmd));
39 	cmd.lock_hw.header.type = DMUB_CMD__HW_LOCK;
40 	cmd.lock_hw.header.sub_type = 0;
41 	cmd.lock_hw.header.payload_bytes = sizeof(struct dmub_cmd_lock_hw_data);
42 	cmd.lock_hw.lock_hw_data.client = HW_LOCK_CLIENT_DRIVER;
43 	cmd.lock_hw.lock_hw_data.lock = lock;
44 	cmd.lock_hw.lock_hw_data.hw_locks.u8All = hw_locks->u8All;
45 	memcpy(&cmd.lock_hw.lock_hw_data.inst_flags, inst_flags, sizeof(struct dmub_hw_lock_inst_flags));
46 
47 	if (!lock)
48 		cmd.lock_hw.lock_hw_data.should_release = 1;
49 
50 	dc_dmub_srv_cmd_queue(dmub_srv, &cmd);
51 	dc_dmub_srv_cmd_execute(dmub_srv);
52 	dc_dmub_srv_wait_idle(dmub_srv);
53 }
54 
dmub_hw_lock_mgr_inbox0_cmd(struct dc_dmub_srv * dmub_srv,union dmub_inbox0_cmd_lock_hw hw_lock_cmd)55 void dmub_hw_lock_mgr_inbox0_cmd(struct dc_dmub_srv *dmub_srv,
56 		union dmub_inbox0_cmd_lock_hw hw_lock_cmd)
57 {
58 	union dmub_inbox0_data_register data = { 0 };
59 
60 	data.inbox0_cmd_lock_hw = hw_lock_cmd;
61 	dc_dmub_srv_clear_inbox0_ack(dmub_srv);
62 	dc_dmub_srv_send_inbox0_cmd(dmub_srv, data);
63 	dc_dmub_srv_wait_for_inbox0_ack(dmub_srv);
64 }
65 
should_use_dmub_lock(struct dc_link * link)66 bool should_use_dmub_lock(struct dc_link *link)
67 {
68 	if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1)
69 		return true;
70 	return false;
71 }
72