1 | /* |
2 | * Copyright 2012 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 | |
24 | #include "radeon.h" |
25 | #include "trinityd.h" |
26 | #include "trinity_dpm.h" |
27 | #include "ppsmc.h" |
28 | |
29 | static int trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id) |
30 | { |
31 | int i; |
32 | u32 v = 0; |
33 | |
34 | WREG32(SMC_MESSAGE_0, id); |
35 | for (i = 0; i < rdev->usec_timeout; i++) { |
36 | if (RREG32(SMC_RESP_0) != 0) |
37 | break; |
38 | udelay(1); |
39 | } |
40 | v = RREG32(SMC_RESP_0); |
41 | |
42 | if (v != 1) { |
43 | if (v == 0xFF) { |
44 | DRM_ERROR("SMC failed to handle the message!\n" ); |
45 | return -EINVAL; |
46 | } else if (v == 0xFE) { |
47 | DRM_ERROR("Unknown SMC message!\n" ); |
48 | return -EINVAL; |
49 | } |
50 | } |
51 | |
52 | return 0; |
53 | } |
54 | |
55 | int trinity_dpm_bapm_enable(struct radeon_device *rdev, bool enable) |
56 | { |
57 | if (enable) |
58 | return trinity_notify_message_to_smu(rdev, PPSMC_MSG_EnableBAPM); |
59 | else |
60 | return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM); |
61 | } |
62 | |
63 | int trinity_dpm_config(struct radeon_device *rdev, bool enable) |
64 | { |
65 | if (enable) |
66 | WREG32_SMC(SMU_SCRATCH0, 1); |
67 | else |
68 | WREG32_SMC(SMU_SCRATCH0, 0); |
69 | |
70 | return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config); |
71 | } |
72 | |
73 | int trinity_dpm_force_state(struct radeon_device *rdev, u32 n) |
74 | { |
75 | WREG32_SMC(SMU_SCRATCH0, n); |
76 | |
77 | return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_ForceState); |
78 | } |
79 | |
80 | int trinity_dpm_n_levels_disabled(struct radeon_device *rdev, u32 n) |
81 | { |
82 | WREG32_SMC(SMU_SCRATCH0, n); |
83 | |
84 | return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_N_LevelsDisabled); |
85 | } |
86 | |
87 | int trinity_uvd_dpm_config(struct radeon_device *rdev) |
88 | { |
89 | return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config); |
90 | } |
91 | |
92 | int trinity_dpm_no_forced_level(struct radeon_device *rdev) |
93 | { |
94 | return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel); |
95 | } |
96 | |
97 | int trinity_dce_enable_voltage_adjustment(struct radeon_device *rdev, |
98 | bool enable) |
99 | { |
100 | if (enable) |
101 | return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_AllowVoltageAdjustment); |
102 | else |
103 | return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment); |
104 | } |
105 | |
106 | int trinity_gfx_dynamic_mgpg_config(struct radeon_device *rdev) |
107 | { |
108 | return trinity_notify_message_to_smu(rdev, PPSMC_MSG_PG_SIMD_Config); |
109 | } |
110 | |
111 | void trinity_acquire_mutex(struct radeon_device *rdev) |
112 | { |
113 | int i; |
114 | |
115 | WREG32(SMC_INT_REQ, 1); |
116 | for (i = 0; i < rdev->usec_timeout; i++) { |
117 | if ((RREG32(SMC_INT_REQ) & 0xffff) == 1) |
118 | break; |
119 | udelay(1); |
120 | } |
121 | } |
122 | |
123 | void trinity_release_mutex(struct radeon_device *rdev) |
124 | { |
125 | WREG32(SMC_INT_REQ, 0); |
126 | } |
127 | |