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  * Authors: AMD
23  *
24  */
25 
26 #include <linux/string.h>
27 #include <linux/acpi.h>
28 
29 #include <drm/drmP.h>
30 #include <drm/drm_crtc_helper.h>
31 #include <drm/amdgpu_drm.h>
32 #include "dm_services.h"
33 #include "amdgpu.h"
34 #include "amdgpu_dm.h"
35 #include "amdgpu_dm_irq.h"
36 #include "amdgpu_pm.h"
37 
38 unsigned long long dm_get_elapse_time_in_ns(struct dc_context *ctx,
39 		unsigned long long current_time_stamp,
40 		unsigned long long last_time_stamp)
41 {
42 	return current_time_stamp - last_time_stamp;
43 }
44 
45 void dm_perf_trace_timestamp(const char *func_name, unsigned int line)
46 {
47 }
48 
49 bool dm_write_persistent_data(struct dc_context *ctx,
50 		const struct dc_sink *sink,
51 		const char *module_name,
52 		const char *key_name,
53 		void *params,
54 		unsigned int size,
55 		struct persistent_data_flag *flag)
56 {
57 	/*TODO implement*/
58 	return false;
59 }
60 
61 bool dm_read_persistent_data(struct dc_context *ctx,
62 				const struct dc_sink *sink,
63 				const char *module_name,
64 				const char *key_name,
65 				void *params,
66 				unsigned int size,
67 				struct persistent_data_flag *flag)
68 {
69 	/*TODO implement*/
70 	return false;
71 }
72 
73 /**** power component interfaces ****/
74 
75 bool dm_pp_apply_display_requirements(
76 		const struct dc_context *ctx,
77 		const struct dm_pp_display_configuration *pp_display_cfg)
78 {
79 	struct amdgpu_device *adev = ctx->driver_context;
80 
81 	if (adev->pm.dpm_enabled) {
82 
83 		memset(&adev->pm.pm_display_cfg, 0,
84 				sizeof(adev->pm.pm_display_cfg));
85 
86 		adev->pm.pm_display_cfg.cpu_cc6_disable =
87 			pp_display_cfg->cpu_cc6_disable;
88 
89 		adev->pm.pm_display_cfg.cpu_pstate_disable =
90 			pp_display_cfg->cpu_pstate_disable;
91 
92 		adev->pm.pm_display_cfg.cpu_pstate_separation_time =
93 			pp_display_cfg->cpu_pstate_separation_time;
94 
95 		adev->pm.pm_display_cfg.nb_pstate_switch_disable =
96 			pp_display_cfg->nb_pstate_switch_disable;
97 
98 		adev->pm.pm_display_cfg.num_display =
99 				pp_display_cfg->display_count;
100 		adev->pm.pm_display_cfg.num_path_including_non_display =
101 				pp_display_cfg->display_count;
102 
103 		adev->pm.pm_display_cfg.min_core_set_clock =
104 				pp_display_cfg->min_engine_clock_khz/10;
105 		adev->pm.pm_display_cfg.min_core_set_clock_in_sr =
106 				pp_display_cfg->min_engine_clock_deep_sleep_khz/10;
107 		adev->pm.pm_display_cfg.min_mem_set_clock =
108 				pp_display_cfg->min_memory_clock_khz/10;
109 
110 		adev->pm.pm_display_cfg.multi_monitor_in_sync =
111 				pp_display_cfg->all_displays_in_sync;
112 		adev->pm.pm_display_cfg.min_vblank_time =
113 				pp_display_cfg->avail_mclk_switch_time_us;
114 
115 		adev->pm.pm_display_cfg.display_clk =
116 				pp_display_cfg->disp_clk_khz/10;
117 
118 		adev->pm.pm_display_cfg.dce_tolerable_mclk_in_active_latency =
119 				pp_display_cfg->avail_mclk_switch_time_in_disp_active_us;
120 
121 		adev->pm.pm_display_cfg.crtc_index = pp_display_cfg->crtc_index;
122 		adev->pm.pm_display_cfg.line_time_in_us =
123 				pp_display_cfg->line_time_in_us;
124 
125 		adev->pm.pm_display_cfg.vrefresh = pp_display_cfg->disp_configs[0].v_refresh;
126 		adev->pm.pm_display_cfg.crossfire_display_index = -1;
127 		adev->pm.pm_display_cfg.min_bus_bandwidth = 0;
128 
129 		/* TODO: complete implementation of
130 		 * pp_display_configuration_change().
131 		 * Follow example of:
132 		 * PHM_StoreDALConfigurationData - powerplay\hwmgr\hardwaremanager.c
133 		 * PP_IRI_DisplayConfigurationChange - powerplay\eventmgr\iri.c */
134 		if (adev->powerplay.pp_funcs->display_configuration_change)
135 			adev->powerplay.pp_funcs->display_configuration_change(
136 				adev->powerplay.pp_handle,
137 				&adev->pm.pm_display_cfg);
138 
139 		/* TODO: replace by a separate call to 'apply display cfg'? */
140 		amdgpu_pm_compute_clocks(adev);
141 	}
142 
143 	return true;
144 }
145 
146 static void get_default_clock_levels(
147 		enum dm_pp_clock_type clk_type,
148 		struct dm_pp_clock_levels *clks)
149 {
150 	uint32_t disp_clks_in_khz[6] = {
151 			300000, 400000, 496560, 626090, 685720, 757900 };
152 	uint32_t sclks_in_khz[6] = {
153 			300000, 360000, 423530, 514290, 626090, 720000 };
154 	uint32_t mclks_in_khz[2] = { 333000, 800000 };
155 
156 	switch (clk_type) {
157 	case DM_PP_CLOCK_TYPE_DISPLAY_CLK:
158 		clks->num_levels = 6;
159 		memmove(clks->clocks_in_khz, disp_clks_in_khz,
160 				sizeof(disp_clks_in_khz));
161 		break;
162 	case DM_PP_CLOCK_TYPE_ENGINE_CLK:
163 		clks->num_levels = 6;
164 		memmove(clks->clocks_in_khz, sclks_in_khz,
165 				sizeof(sclks_in_khz));
166 		break;
167 	case DM_PP_CLOCK_TYPE_MEMORY_CLK:
168 		clks->num_levels = 2;
169 		memmove(clks->clocks_in_khz, mclks_in_khz,
170 				sizeof(mclks_in_khz));
171 		break;
172 	default:
173 		clks->num_levels = 0;
174 		break;
175 	}
176 }
177 
178 static enum amd_pp_clock_type dc_to_pp_clock_type(
179 		enum dm_pp_clock_type dm_pp_clk_type)
180 {
181 	enum amd_pp_clock_type amd_pp_clk_type = 0;
182 
183 	switch (dm_pp_clk_type) {
184 	case DM_PP_CLOCK_TYPE_DISPLAY_CLK:
185 		amd_pp_clk_type = amd_pp_disp_clock;
186 		break;
187 	case DM_PP_CLOCK_TYPE_ENGINE_CLK:
188 		amd_pp_clk_type = amd_pp_sys_clock;
189 		break;
190 	case DM_PP_CLOCK_TYPE_MEMORY_CLK:
191 		amd_pp_clk_type = amd_pp_mem_clock;
192 		break;
193 	default:
194 		DRM_ERROR("DM_PPLIB: invalid clock type: %d!\n",
195 				dm_pp_clk_type);
196 		break;
197 	}
198 
199 	return amd_pp_clk_type;
200 }
201 
202 static void pp_to_dc_clock_levels(
203 		const struct amd_pp_clocks *pp_clks,
204 		struct dm_pp_clock_levels *dc_clks,
205 		enum dm_pp_clock_type dc_clk_type)
206 {
207 	uint32_t i;
208 
209 	if (pp_clks->count > DM_PP_MAX_CLOCK_LEVELS) {
210 		DRM_INFO("DM_PPLIB: Warning: %s clock: number of levels %d exceeds maximum of %d!\n",
211 				DC_DECODE_PP_CLOCK_TYPE(dc_clk_type),
212 				pp_clks->count,
213 				DM_PP_MAX_CLOCK_LEVELS);
214 
215 		dc_clks->num_levels = DM_PP_MAX_CLOCK_LEVELS;
216 	} else
217 		dc_clks->num_levels = pp_clks->count;
218 
219 	DRM_INFO("DM_PPLIB: values for %s clock\n",
220 			DC_DECODE_PP_CLOCK_TYPE(dc_clk_type));
221 
222 	for (i = 0; i < dc_clks->num_levels; i++) {
223 		DRM_INFO("DM_PPLIB:\t %d\n", pp_clks->clock[i]);
224 		/* translate 10kHz to kHz */
225 		dc_clks->clocks_in_khz[i] = pp_clks->clock[i] * 10;
226 	}
227 }
228 
229 static void pp_to_dc_clock_levels_with_latency(
230 		const struct pp_clock_levels_with_latency *pp_clks,
231 		struct dm_pp_clock_levels_with_latency *clk_level_info,
232 		enum dm_pp_clock_type dc_clk_type)
233 {
234 	uint32_t i;
235 
236 	if (pp_clks->num_levels > DM_PP_MAX_CLOCK_LEVELS) {
237 		DRM_INFO("DM_PPLIB: Warning: %s clock: number of levels %d exceeds maximum of %d!\n",
238 				DC_DECODE_PP_CLOCK_TYPE(dc_clk_type),
239 				pp_clks->num_levels,
240 				DM_PP_MAX_CLOCK_LEVELS);
241 
242 		clk_level_info->num_levels = DM_PP_MAX_CLOCK_LEVELS;
243 	} else
244 		clk_level_info->num_levels = pp_clks->num_levels;
245 
246 	DRM_DEBUG("DM_PPLIB: values for %s clock\n",
247 			DC_DECODE_PP_CLOCK_TYPE(dc_clk_type));
248 
249 	for (i = 0; i < clk_level_info->num_levels; i++) {
250 		DRM_DEBUG("DM_PPLIB:\t %d\n", pp_clks->data[i].clocks_in_khz);
251 		clk_level_info->data[i].clocks_in_khz = pp_clks->data[i].clocks_in_khz;
252 		clk_level_info->data[i].latency_in_us = pp_clks->data[i].latency_in_us;
253 	}
254 }
255 
256 bool dm_pp_get_clock_levels_by_type(
257 		const struct dc_context *ctx,
258 		enum dm_pp_clock_type clk_type,
259 		struct dm_pp_clock_levels *dc_clks)
260 {
261 	struct amdgpu_device *adev = ctx->driver_context;
262 	void *pp_handle = adev->powerplay.pp_handle;
263 	struct amd_pp_clocks pp_clks = { 0 };
264 	struct amd_pp_simple_clock_info validation_clks = { 0 };
265 	uint32_t i;
266 
267 	if (adev->powerplay.pp_funcs->get_clock_by_type) {
268 		if (adev->powerplay.pp_funcs->get_clock_by_type(pp_handle,
269 			dc_to_pp_clock_type(clk_type), &pp_clks)) {
270 		/* Error in pplib. Provide default values. */
271 			get_default_clock_levels(clk_type, dc_clks);
272 			return true;
273 		}
274 	}
275 
276 	pp_to_dc_clock_levels(&pp_clks, dc_clks, clk_type);
277 
278 	if (adev->powerplay.pp_funcs->get_display_mode_validation_clocks) {
279 		if (adev->powerplay.pp_funcs->get_display_mode_validation_clocks(
280 						pp_handle, &validation_clks)) {
281 			/* Error in pplib. Provide default values. */
282 			DRM_INFO("DM_PPLIB: Warning: using default validation clocks!\n");
283 			validation_clks.engine_max_clock = 72000;
284 			validation_clks.memory_max_clock = 80000;
285 			validation_clks.level = 0;
286 		}
287 	}
288 
289 	DRM_INFO("DM_PPLIB: Validation clocks:\n");
290 	DRM_INFO("DM_PPLIB:    engine_max_clock: %d\n",
291 			validation_clks.engine_max_clock);
292 	DRM_INFO("DM_PPLIB:    memory_max_clock: %d\n",
293 			validation_clks.memory_max_clock);
294 	DRM_INFO("DM_PPLIB:    level           : %d\n",
295 			validation_clks.level);
296 
297 	/* Translate 10 kHz to kHz. */
298 	validation_clks.engine_max_clock *= 10;
299 	validation_clks.memory_max_clock *= 10;
300 
301 	/* Determine the highest non-boosted level from the Validation Clocks */
302 	if (clk_type == DM_PP_CLOCK_TYPE_ENGINE_CLK) {
303 		for (i = 0; i < dc_clks->num_levels; i++) {
304 			if (dc_clks->clocks_in_khz[i] > validation_clks.engine_max_clock) {
305 				/* This clock is higher the validation clock.
306 				 * Than means the previous one is the highest
307 				 * non-boosted one. */
308 				DRM_INFO("DM_PPLIB: reducing engine clock level from %d to %d\n",
309 						dc_clks->num_levels, i);
310 				dc_clks->num_levels = i > 0 ? i : 1;
311 				break;
312 			}
313 		}
314 	} else if (clk_type == DM_PP_CLOCK_TYPE_MEMORY_CLK) {
315 		for (i = 0; i < dc_clks->num_levels; i++) {
316 			if (dc_clks->clocks_in_khz[i] > validation_clks.memory_max_clock) {
317 				DRM_INFO("DM_PPLIB: reducing memory clock level from %d to %d\n",
318 						dc_clks->num_levels, i);
319 				dc_clks->num_levels = i > 0 ? i : 1;
320 				break;
321 			}
322 		}
323 	}
324 
325 	return true;
326 }
327 
328 bool dm_pp_get_clock_levels_by_type_with_latency(
329 	const struct dc_context *ctx,
330 	enum dm_pp_clock_type clk_type,
331 	struct dm_pp_clock_levels_with_latency *clk_level_info)
332 {
333 	struct amdgpu_device *adev = ctx->driver_context;
334 	void *pp_handle = adev->powerplay.pp_handle;
335 	struct pp_clock_levels_with_latency pp_clks = { 0 };
336 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
337 
338 	if (!pp_funcs || !pp_funcs->get_clock_by_type_with_latency)
339 		return false;
340 
341 	if (pp_funcs->get_clock_by_type_with_latency(pp_handle,
342 						     dc_to_pp_clock_type(clk_type),
343 						     &pp_clks))
344 		return false;
345 
346 	pp_to_dc_clock_levels_with_latency(&pp_clks, clk_level_info, clk_type);
347 
348 	return true;
349 }
350 
351 bool dm_pp_get_clock_levels_by_type_with_voltage(
352 	const struct dc_context *ctx,
353 	enum dm_pp_clock_type clk_type,
354 	struct dm_pp_clock_levels_with_voltage *clk_level_info)
355 {
356 	/* TODO: to be implemented */
357 	return false;
358 }
359 
360 bool dm_pp_notify_wm_clock_changes(
361 	const struct dc_context *ctx,
362 	struct dm_pp_wm_sets_with_clock_ranges *wm_with_clock_ranges)
363 {
364 	/* TODO: to be implemented */
365 	return false;
366 }
367 
368 bool dm_pp_apply_power_level_change_request(
369 	const struct dc_context *ctx,
370 	struct dm_pp_power_level_change_request *level_change_req)
371 {
372 	/* TODO: to be implemented */
373 	return false;
374 }
375 
376 bool dm_pp_apply_clock_for_voltage_request(
377 	const struct dc_context *ctx,
378 	struct dm_pp_clock_for_voltage_req *clock_for_voltage_req)
379 {
380 	/* TODO: to be implemented */
381 	return false;
382 }
383 
384 bool dm_pp_get_static_clocks(
385 	const struct dc_context *ctx,
386 	struct dm_pp_static_clock_info *static_clk_info)
387 {
388 	/* TODO: to be implemented */
389 	return false;
390 }
391 
392 void dm_pp_get_funcs_rv(
393 		struct dc_context *ctx,
394 		struct pp_smu_funcs_rv *funcs)
395 {}
396 
397 /**** end of power component interfaces ****/
398