1 /*
2  * Copyright 2020 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 #include "dc/dc_stat.h"
26 #include "dmub/dmub_srv_stat.h"
27 #include "dc_dmub_srv.h"
28 
29 /**
30  * DOC: DC STAT Interface
31  *
32  * These interfaces are called without acquiring DAL and DC locks.
33  * Hence, there is limitations on whese interfaces can access. Only
34  * variables exclusively defined for these interfaces can be modified.
35  */
36 
37 /**
38  *  dc_stat_get_dmub_notification
39  *
40  * Calls dmub layer to retrieve dmub notification
41  *
42  * @dc: dc structure
43  * @notify: dmub notification structure
44  *
45  * Returns
46  *     None
47  */
dc_stat_get_dmub_notification(const struct dc * dc,struct dmub_notification * notify)48 void dc_stat_get_dmub_notification(const struct dc *dc, struct dmub_notification *notify)
49 {
50 	/**
51 	 * This function is called without dal and dc locks, so
52 	 * we shall not modify any dc, dc_dmub_srv or dmub variables
53 	 * except variables exclusively accessed by this function
54 	 */
55 	struct dmub_srv *dmub = dc->ctx->dmub_srv->dmub;
56 	enum dmub_status status;
57 
58 	status = dmub_srv_stat_get_notification(dmub, notify);
59 	ASSERT(status == DMUB_STATUS_OK);
60 
61 	/* For HPD/HPD RX, convert dpia port index into link index */
62 	if (notify->type == DMUB_NOTIFICATION_HPD ||
63 	    notify->type == DMUB_NOTIFICATION_HPD_IRQ ||
64 	    notify->type == DMUB_NOTIFICATION_AUX_REPLY ||
65 	    notify->type == DMUB_NOTIFICATION_DPIA_NOTIFICATION ||
66 	    notify->type == DMUB_NOTIFICATION_SET_CONFIG_REPLY) {
67 		notify->link_index =
68 			get_link_index_from_dpia_port_index(dc, notify->link_index);
69 	}
70 }
71 
72 /**
73  * dc_stat_get_dmub_dataout
74  *
75  * Calls dmub layer to retrieve dmub gpint dataout
76  *
77  * @dc: dc structure
78  * @dataout: dmub gpint dataout
79  *
80  * Returns
81  *     None
82  */
dc_stat_get_dmub_dataout(const struct dc * dc,uint32_t * dataout)83 void dc_stat_get_dmub_dataout(const struct dc *dc, uint32_t *dataout)
84 {
85 	struct dmub_srv *dmub = dc->ctx->dmub_srv->dmub;
86 	enum dmub_status status;
87 
88 	status = dmub_srv_get_gpint_dataout(dmub, dataout);
89 	ASSERT(status == DMUB_STATUS_OK);
90 }
91