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1f7371b2 AD |
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/gfp.h> | |
ac885b3a | 26 | #include <linux/slab.h> |
1f7371b2 AD |
27 | #include "amd_shared.h" |
28 | #include "amd_powerplay.h" | |
ac885b3a | 29 | #include "pp_instance.h" |
1f7371b2 AD |
30 | |
31 | static int pp_early_init(void *handle) | |
32 | { | |
33 | return 0; | |
34 | } | |
35 | ||
36 | static int pp_sw_init(void *handle) | |
37 | { | |
3bace359 JZ |
38 | struct pp_instance *pp_handle; |
39 | struct pp_hwmgr *hwmgr; | |
40 | int ret = 0; | |
41 | ||
42 | if (handle == NULL) | |
43 | return -EINVAL; | |
44 | ||
45 | pp_handle = (struct pp_instance *)handle; | |
46 | hwmgr = pp_handle->hwmgr; | |
47 | ||
48 | if (hwmgr == NULL || hwmgr->pptable_func == NULL || | |
49 | hwmgr->hwmgr_func == NULL || | |
50 | hwmgr->pptable_func->pptable_init == NULL || | |
51 | hwmgr->hwmgr_func->backend_init == NULL) | |
52 | return -EINVAL; | |
53 | ||
54 | ret = hwmgr->pptable_func->pptable_init(hwmgr); | |
55 | if (ret == 0) | |
56 | ret = hwmgr->hwmgr_func->backend_init(hwmgr); | |
57 | ||
58 | return ret; | |
1f7371b2 AD |
59 | } |
60 | ||
61 | static int pp_sw_fini(void *handle) | |
62 | { | |
3bace359 JZ |
63 | struct pp_instance *pp_handle; |
64 | struct pp_hwmgr *hwmgr; | |
65 | int ret = 0; | |
66 | ||
67 | if (handle == NULL) | |
68 | return -EINVAL; | |
69 | ||
70 | pp_handle = (struct pp_instance *)handle; | |
71 | hwmgr = pp_handle->hwmgr; | |
72 | ||
73 | if (hwmgr != NULL || hwmgr->hwmgr_func != NULL || | |
74 | hwmgr->hwmgr_func->backend_fini != NULL) | |
75 | ret = hwmgr->hwmgr_func->backend_fini(hwmgr); | |
76 | ||
77 | return ret; | |
1f7371b2 AD |
78 | } |
79 | ||
80 | static int pp_hw_init(void *handle) | |
81 | { | |
ac885b3a JZ |
82 | struct pp_instance *pp_handle; |
83 | struct pp_smumgr *smumgr; | |
84 | int ret = 0; | |
85 | ||
86 | if (handle == NULL) | |
87 | return -EINVAL; | |
88 | ||
89 | pp_handle = (struct pp_instance *)handle; | |
90 | smumgr = pp_handle->smu_mgr; | |
91 | ||
92 | if (smumgr == NULL || smumgr->smumgr_funcs == NULL || | |
93 | smumgr->smumgr_funcs->smu_init == NULL || | |
94 | smumgr->smumgr_funcs->start_smu == NULL) | |
95 | return -EINVAL; | |
96 | ||
97 | ret = smumgr->smumgr_funcs->smu_init(smumgr); | |
98 | if (ret) { | |
99 | printk(KERN_ERR "[ powerplay ] smc initialization failed\n"); | |
100 | return ret; | |
101 | } | |
102 | ||
103 | ret = smumgr->smumgr_funcs->start_smu(smumgr); | |
104 | if (ret) { | |
105 | printk(KERN_ERR "[ powerplay ] smc start failed\n"); | |
106 | smumgr->smumgr_funcs->smu_fini(smumgr); | |
107 | return ret; | |
108 | } | |
3bace359 JZ |
109 | hw_init_power_state_table(pp_handle->hwmgr); |
110 | ||
1f7371b2 AD |
111 | return 0; |
112 | } | |
113 | ||
114 | static int pp_hw_fini(void *handle) | |
115 | { | |
ac885b3a JZ |
116 | struct pp_instance *pp_handle; |
117 | struct pp_smumgr *smumgr; | |
118 | ||
119 | if (handle == NULL) | |
120 | return -EINVAL; | |
121 | ||
122 | pp_handle = (struct pp_instance *)handle; | |
123 | smumgr = pp_handle->smu_mgr; | |
124 | ||
125 | if (smumgr != NULL || smumgr->smumgr_funcs != NULL || | |
126 | smumgr->smumgr_funcs->smu_fini != NULL) | |
127 | smumgr->smumgr_funcs->smu_fini(smumgr); | |
128 | ||
1f7371b2 AD |
129 | return 0; |
130 | } | |
131 | ||
132 | static bool pp_is_idle(void *handle) | |
133 | { | |
134 | return 0; | |
135 | } | |
136 | ||
137 | static int pp_wait_for_idle(void *handle) | |
138 | { | |
139 | return 0; | |
140 | } | |
141 | ||
142 | static int pp_sw_reset(void *handle) | |
143 | { | |
144 | return 0; | |
145 | } | |
146 | ||
147 | static void pp_print_status(void *handle) | |
148 | { | |
149 | ||
150 | } | |
151 | ||
152 | static int pp_set_clockgating_state(void *handle, | |
153 | enum amd_clockgating_state state) | |
154 | { | |
155 | return 0; | |
156 | } | |
157 | ||
158 | static int pp_set_powergating_state(void *handle, | |
159 | enum amd_powergating_state state) | |
160 | { | |
161 | return 0; | |
162 | } | |
163 | ||
164 | static int pp_suspend(void *handle) | |
165 | { | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static int pp_resume(void *handle) | |
170 | { | |
171 | return 0; | |
172 | } | |
173 | ||
174 | const struct amd_ip_funcs pp_ip_funcs = { | |
175 | .early_init = pp_early_init, | |
176 | .late_init = NULL, | |
177 | .sw_init = pp_sw_init, | |
178 | .sw_fini = pp_sw_fini, | |
179 | .hw_init = pp_hw_init, | |
180 | .hw_fini = pp_hw_fini, | |
181 | .suspend = pp_suspend, | |
182 | .resume = pp_resume, | |
183 | .is_idle = pp_is_idle, | |
184 | .wait_for_idle = pp_wait_for_idle, | |
185 | .soft_reset = pp_sw_reset, | |
186 | .print_status = pp_print_status, | |
187 | .set_clockgating_state = pp_set_clockgating_state, | |
188 | .set_powergating_state = pp_set_powergating_state, | |
189 | }; | |
190 | ||
191 | static int pp_dpm_load_fw(void *handle) | |
192 | { | |
193 | return 0; | |
194 | } | |
195 | ||
196 | static int pp_dpm_fw_loading_complete(void *handle) | |
197 | { | |
198 | return 0; | |
199 | } | |
200 | ||
201 | static int pp_dpm_force_performance_level(void *handle, | |
202 | enum amd_dpm_forced_level level) | |
203 | { | |
204 | return 0; | |
205 | } | |
206 | static enum amd_dpm_forced_level pp_dpm_get_performance_level( | |
207 | void *handle) | |
208 | { | |
209 | return 0; | |
210 | } | |
211 | static int pp_dpm_get_sclk(void *handle, bool low) | |
212 | { | |
213 | return 0; | |
214 | } | |
215 | static int pp_dpm_get_mclk(void *handle, bool low) | |
216 | { | |
217 | return 0; | |
218 | } | |
219 | static int pp_dpm_powergate_vce(void *handle, bool gate) | |
220 | { | |
221 | return 0; | |
222 | } | |
223 | static int pp_dpm_powergate_uvd(void *handle, bool gate) | |
224 | { | |
225 | return 0; | |
226 | } | |
227 | ||
228 | int pp_dpm_dispatch_tasks(void *handle, enum amd_pp_event event_id, void *input, void *output) | |
229 | { | |
230 | return 0; | |
231 | } | |
232 | enum amd_pm_state_type pp_dpm_get_current_power_state(void *handle) | |
233 | { | |
234 | return 0; | |
235 | } | |
236 | static void | |
237 | pp_debugfs_print_current_performance_level(void *handle, | |
238 | struct seq_file *m) | |
239 | { | |
240 | return; | |
241 | } | |
3bace359 | 242 | |
1f7371b2 AD |
243 | const struct amd_powerplay_funcs pp_dpm_funcs = { |
244 | .get_temperature = NULL, | |
245 | .load_firmware = pp_dpm_load_fw, | |
246 | .wait_for_fw_loading_complete = pp_dpm_fw_loading_complete, | |
247 | .force_performance_level = pp_dpm_force_performance_level, | |
248 | .get_performance_level = pp_dpm_get_performance_level, | |
249 | .get_current_power_state = pp_dpm_get_current_power_state, | |
250 | .get_sclk = pp_dpm_get_sclk, | |
251 | .get_mclk = pp_dpm_get_mclk, | |
252 | .powergate_vce = pp_dpm_powergate_vce, | |
253 | .powergate_uvd = pp_dpm_powergate_uvd, | |
254 | .dispatch_tasks = pp_dpm_dispatch_tasks, | |
255 | .print_current_performance_level = pp_debugfs_print_current_performance_level, | |
256 | }; | |
257 | ||
ac885b3a JZ |
258 | static int amd_pp_instance_init(struct amd_pp_init *pp_init, |
259 | struct amd_powerplay *amd_pp) | |
260 | { | |
261 | int ret; | |
262 | struct pp_instance *handle; | |
263 | ||
264 | handle = kzalloc(sizeof(struct pp_instance), GFP_KERNEL); | |
265 | if (handle == NULL) | |
266 | return -ENOMEM; | |
267 | ||
268 | ret = smum_init(pp_init, handle); | |
269 | if (ret) | |
3bace359 JZ |
270 | goto fail_smum; |
271 | ||
272 | ret = hwmgr_init(pp_init, handle); | |
273 | if (ret) | |
274 | goto fail_hwmgr; | |
ac885b3a JZ |
275 | |
276 | amd_pp->pp_handle = handle; | |
277 | return 0; | |
3bace359 JZ |
278 | |
279 | fail_hwmgr: | |
280 | smum_fini(handle->smu_mgr); | |
281 | fail_smum: | |
282 | kfree(handle); | |
283 | return ret; | |
ac885b3a JZ |
284 | } |
285 | ||
286 | static int amd_pp_instance_fini(void *handle) | |
287 | { | |
288 | struct pp_instance *instance = (struct pp_instance *)handle; | |
289 | if (instance == NULL) | |
290 | return -EINVAL; | |
291 | ||
3bace359 JZ |
292 | hwmgr_fini(instance->hwmgr); |
293 | ||
ac885b3a JZ |
294 | smum_fini(instance->smu_mgr); |
295 | ||
296 | kfree(handle); | |
297 | return 0; | |
298 | } | |
299 | ||
1f7371b2 AD |
300 | int amd_powerplay_init(struct amd_pp_init *pp_init, |
301 | struct amd_powerplay *amd_pp) | |
302 | { | |
ac885b3a JZ |
303 | int ret; |
304 | ||
1f7371b2 AD |
305 | if (pp_init == NULL || amd_pp == NULL) |
306 | return -EINVAL; | |
307 | ||
ac885b3a JZ |
308 | ret = amd_pp_instance_init(pp_init, amd_pp); |
309 | ||
310 | if (ret) | |
311 | return ret; | |
312 | ||
1f7371b2 AD |
313 | amd_pp->ip_funcs = &pp_ip_funcs; |
314 | amd_pp->pp_funcs = &pp_dpm_funcs; | |
315 | ||
316 | return 0; | |
317 | } | |
318 | ||
319 | int amd_powerplay_fini(void *handle) | |
320 | { | |
ac885b3a JZ |
321 | amd_pp_instance_fini(handle); |
322 | ||
1f7371b2 AD |
323 | return 0; |
324 | } |