1 /*
2 * Copyright 2014 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 <linux/firmware.h>
25 #include "drmP.h"
26 #include "amdgpu.h"
27 #include "tonga_smumgr.h"
28
29 MODULE_FIRMWARE("amdgpu/tonga_smc.bin");
30
31 static void tonga_dpm_set_funcs(struct amdgpu_device *adev);
32
tonga_dpm_early_init(void * handle)33 static int tonga_dpm_early_init(void *handle)
34 {
35 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
36
37 tonga_dpm_set_funcs(adev);
38
39 return 0;
40 }
41
tonga_dpm_init_microcode(struct amdgpu_device * adev)42 static int tonga_dpm_init_microcode(struct amdgpu_device *adev)
43 {
44 char fw_name[30] = "amdgpu/tonga_smc.bin";
45 int err;
46 err = request_firmware(&adev->pm.fw, fw_name, adev->dev);
47 if (err)
48 goto out;
49 err = amdgpu_ucode_validate(adev->pm.fw);
50
51 out:
52 if (err) {
53 DRM_ERROR("Failed to load firmware \"%s\"", fw_name);
54 release_firmware(adev->pm.fw);
55 adev->pm.fw = NULL;
56 }
57 return err;
58 }
59
tonga_dpm_sw_init(void * handle)60 static int tonga_dpm_sw_init(void *handle)
61 {
62 int ret;
63 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
64
65 ret = tonga_dpm_init_microcode(adev);
66 if (ret)
67 return ret;
68
69 return 0;
70 }
71
tonga_dpm_sw_fini(void * handle)72 static int tonga_dpm_sw_fini(void *handle)
73 {
74 return 0;
75 }
76
tonga_dpm_hw_init(void * handle)77 static int tonga_dpm_hw_init(void *handle)
78 {
79 int ret;
80 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
81
82 mutex_lock(&adev->pm.mutex);
83
84 /* smu init only needs to be called at startup, not resume.
85 * It should be in sw_init, but requires the fw info gathered
86 * in sw_init from other IP modules.
87 */
88 ret = tonga_smu_init(adev);
89 if (ret) {
90 DRM_ERROR("SMU initialization failed\n");
91 goto fail;
92 }
93
94 ret = tonga_smu_start(adev);
95 if (ret) {
96 DRM_ERROR("SMU start failed\n");
97 goto fail;
98 }
99
100 mutex_unlock(&adev->pm.mutex);
101 return 0;
102
103 fail:
104 adev->firmware.smu_load = false;
105 mutex_unlock(&adev->pm.mutex);
106 return -EINVAL;
107 }
108
tonga_dpm_hw_fini(void * handle)109 static int tonga_dpm_hw_fini(void *handle)
110 {
111 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
112
113 mutex_lock(&adev->pm.mutex);
114 /* smu fini only needs to be called at teardown, not suspend.
115 * It should be in sw_fini, but we put it here for symmetry
116 * with smu init.
117 */
118 tonga_smu_fini(adev);
119 mutex_unlock(&adev->pm.mutex);
120 return 0;
121 }
122
tonga_dpm_suspend(void * handle)123 static int tonga_dpm_suspend(void *handle)
124 {
125 return tonga_dpm_hw_fini(handle);
126 }
127
tonga_dpm_resume(void * handle)128 static int tonga_dpm_resume(void *handle)
129 {
130 return tonga_dpm_hw_init(handle);
131 }
132
tonga_dpm_set_clockgating_state(void * handle,enum amd_clockgating_state state)133 static int tonga_dpm_set_clockgating_state(void *handle,
134 enum amd_clockgating_state state)
135 {
136 return 0;
137 }
138
tonga_dpm_set_powergating_state(void * handle,enum amd_powergating_state state)139 static int tonga_dpm_set_powergating_state(void *handle,
140 enum amd_powergating_state state)
141 {
142 return 0;
143 }
144
145 const struct amd_ip_funcs tonga_dpm_ip_funcs = {
146 .early_init = tonga_dpm_early_init,
147 .late_init = NULL,
148 .sw_init = tonga_dpm_sw_init,
149 .sw_fini = tonga_dpm_sw_fini,
150 .hw_init = tonga_dpm_hw_init,
151 .hw_fini = tonga_dpm_hw_fini,
152 .suspend = tonga_dpm_suspend,
153 .resume = tonga_dpm_resume,
154 .is_idle = NULL,
155 .wait_for_idle = NULL,
156 .soft_reset = NULL,
157 .print_status = NULL,
158 .set_clockgating_state = tonga_dpm_set_clockgating_state,
159 .set_powergating_state = tonga_dpm_set_powergating_state,
160 };
161
162 static const struct amdgpu_dpm_funcs tonga_dpm_funcs = {
163 .get_temperature = NULL,
164 .pre_set_power_state = NULL,
165 .set_power_state = NULL,
166 .post_set_power_state = NULL,
167 .display_configuration_changed = NULL,
168 .get_sclk = NULL,
169 .get_mclk = NULL,
170 .print_power_state = NULL,
171 .debugfs_print_current_performance_level = NULL,
172 .force_performance_level = NULL,
173 .vblank_too_short = NULL,
174 .powergate_uvd = NULL,
175 };
176
tonga_dpm_set_funcs(struct amdgpu_device * adev)177 static void tonga_dpm_set_funcs(struct amdgpu_device *adev)
178 {
179 if (NULL == adev->pm.funcs)
180 adev->pm.funcs = &tonga_dpm_funcs;
181 }
182