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1 | /* |
2 | * Copyright 2015 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 | */ | |
23 | #include <linux/types.h> | |
24 | #include <linux/kernel.h> | |
25 | #include <linux/slab.h> | |
26 | #include "eventmgr.h" | |
27 | #include "hwmgr.h" | |
28 | #include "eventinit.h" | |
29 | #include "eventmanagement.h" | |
30 | ||
31 | static int pem_init(struct pp_eventmgr *eventmgr) | |
32 | { | |
33 | int result = 0; | |
827108d0 | 34 | struct pem_event_data event_data = { {0} }; |
e92a0370 RZ |
35 | |
36 | /* Initialize PowerPlay feature info */ | |
37 | pem_init_feature_info(eventmgr); | |
38 | ||
39 | /* Initialize event action chains */ | |
40 | pem_init_event_action_chains(eventmgr); | |
41 | ||
42 | /* Call initialization event */ | |
43 | result = pem_handle_event(eventmgr, AMD_PP_EVENT_INITIALIZE, &event_data); | |
44 | ||
45 | if (0 != result) | |
46 | return result; | |
47 | ||
48 | /* Register interrupt callback functions */ | |
49 | result = pem_register_interrupts(eventmgr); | |
50 | return 0; | |
51 | } | |
52 | ||
53 | static void pem_fini(struct pp_eventmgr *eventmgr) | |
54 | { | |
827108d0 | 55 | struct pem_event_data event_data = { {0} }; |
e92a0370 RZ |
56 | |
57 | pem_uninit_featureInfo(eventmgr); | |
58 | pem_unregister_interrupts(eventmgr); | |
59 | ||
60 | pem_handle_event(eventmgr, AMD_PP_EVENT_UNINITIALIZE, &event_data); | |
e92a0370 RZ |
61 | } |
62 | ||
63 | int eventmgr_init(struct pp_instance *handle) | |
64 | { | |
65 | int result = 0; | |
66 | struct pp_eventmgr *eventmgr; | |
67 | ||
68 | if (handle == NULL) | |
69 | return -EINVAL; | |
70 | ||
71 | eventmgr = kzalloc(sizeof(struct pp_eventmgr), GFP_KERNEL); | |
72 | if (eventmgr == NULL) | |
73 | return -ENOMEM; | |
74 | ||
75 | eventmgr->hwmgr = handle->hwmgr; | |
76 | handle->eventmgr = eventmgr; | |
77 | ||
78 | eventmgr->platform_descriptor = &(eventmgr->hwmgr->platform_descriptor); | |
79 | eventmgr->pp_eventmgr_init = pem_init; | |
80 | eventmgr->pp_eventmgr_fini = pem_fini; | |
81 | ||
82 | return result; | |
83 | } | |
84 | ||
85 | int eventmgr_fini(struct pp_eventmgr *eventmgr) | |
86 | { | |
87 | kfree(eventmgr); | |
88 | return 0; | |
89 | } | |
90 | ||
91 | static int pem_handle_event_unlocked(struct pp_eventmgr *eventmgr, enum amd_pp_event event, struct pem_event_data *data) | |
92 | { | |
93 | if (eventmgr == NULL || event >= AMD_PP_EVENT_MAX || data == NULL) | |
94 | return -EINVAL; | |
95 | ||
96 | return pem_excute_event_chain(eventmgr, eventmgr->event_chain[event], data); | |
97 | } | |
98 | ||
99 | int pem_handle_event(struct pp_eventmgr *eventmgr, enum amd_pp_event event, struct pem_event_data *event_data) | |
100 | { | |
101 | int r = 0; | |
102 | ||
103 | r = pem_handle_event_unlocked(eventmgr, event, event_data); | |
104 | ||
105 | return r; | |
106 | } | |
107 | ||
108 | bool pem_is_hw_access_blocked(struct pp_eventmgr *eventmgr) | |
109 | { | |
110 | return (eventmgr->block_adjust_power_state || phm_is_hw_access_blocked(eventmgr->hwmgr)); | |
111 | } |