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 <drm/drmP.h>
25 #include "radeon.h"
26 #include "trinityd.h"
27 #include "trinity_dpm.h"
28 #include "ppsmc.h"
29
trinity_notify_message_to_smu(struct radeon_device * rdev,u32 id)30 static int trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id)
31 {
32 int i;
33 u32 v = 0;
34
35 WREG32(SMC_MESSAGE_0, id);
36 for (i = 0; i < rdev->usec_timeout; i++) {
37 if (RREG32(SMC_RESP_0) != 0)
38 break;
39 udelay(1);
40 }
41 v = RREG32(SMC_RESP_0);
42
43 if (v != 1) {
44 if (v == 0xFF) {
45 DRM_ERROR("SMC failed to handle the message!\n");
46 return -EINVAL;
47 } else if (v == 0xFE) {
48 DRM_ERROR("Unknown SMC message!\n");
49 return -EINVAL;
50 }
51 }
52
53 return 0;
54 }
55
trinity_dpm_bapm_enable(struct radeon_device * rdev,bool enable)56 int trinity_dpm_bapm_enable(struct radeon_device *rdev, bool enable)
57 {
58 if (enable)
59 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_EnableBAPM);
60 else
61 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM);
62 }
63
trinity_dpm_config(struct radeon_device * rdev,bool enable)64 int trinity_dpm_config(struct radeon_device *rdev, bool enable)
65 {
66 if (enable)
67 WREG32_SMC(SMU_SCRATCH0, 1);
68 else
69 WREG32_SMC(SMU_SCRATCH0, 0);
70
71 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config);
72 }
73
trinity_dpm_force_state(struct radeon_device * rdev,u32 n)74 int trinity_dpm_force_state(struct radeon_device *rdev, u32 n)
75 {
76 WREG32_SMC(SMU_SCRATCH0, n);
77
78 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_ForceState);
79 }
80
trinity_dpm_n_levels_disabled(struct radeon_device * rdev,u32 n)81 int trinity_dpm_n_levels_disabled(struct radeon_device *rdev, u32 n)
82 {
83 WREG32_SMC(SMU_SCRATCH0, n);
84
85 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_N_LevelsDisabled);
86 }
87
trinity_uvd_dpm_config(struct radeon_device * rdev)88 int trinity_uvd_dpm_config(struct radeon_device *rdev)
89 {
90 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config);
91 }
92
trinity_dpm_no_forced_level(struct radeon_device * rdev)93 int trinity_dpm_no_forced_level(struct radeon_device *rdev)
94 {
95 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel);
96 }
97
trinity_dce_enable_voltage_adjustment(struct radeon_device * rdev,bool enable)98 int trinity_dce_enable_voltage_adjustment(struct radeon_device *rdev,
99 bool enable)
100 {
101 if (enable)
102 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_AllowVoltageAdjustment);
103 else
104 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment);
105 }
106
trinity_gfx_dynamic_mgpg_config(struct radeon_device * rdev)107 int trinity_gfx_dynamic_mgpg_config(struct radeon_device *rdev)
108 {
109 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_PG_SIMD_Config);
110 }
111
trinity_acquire_mutex(struct radeon_device * rdev)112 void trinity_acquire_mutex(struct radeon_device *rdev)
113 {
114 int i;
115
116 WREG32(SMC_INT_REQ, 1);
117 for (i = 0; i < rdev->usec_timeout; i++) {
118 if ((RREG32(SMC_INT_REQ) & 0xffff) == 1)
119 break;
120 udelay(1);
121 }
122 }
123
trinity_release_mutex(struct radeon_device * rdev)124 void trinity_release_mutex(struct radeon_device *rdev)
125 {
126 WREG32(SMC_INT_REQ, 0);
127 }
128