1 /*
2  * Copyright 2021 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 
27 
28 #include "dccg.h"
29 #include "clk_mgr_internal.h"
30 
31 // For dce12_get_dp_ref_freq_khz
32 #include "dce100/dce_clk_mgr.h"
33 // For dcn20_update_clocks_update_dpp_dto
34 #include "dcn20/dcn20_clk_mgr.h"
35 #include "dcn31/dcn31_clk_mgr.h"
36 #include "dcn316_clk_mgr.h"
37 #include "reg_helper.h"
38 #include "core_types.h"
39 #include "dcn316_smu.h"
40 #include "dm_helpers.h"
41 #include "dc_dmub_srv.h"
42 #include "link.h"
43 
44 // DCN316 this is CLK1 instance
45 #define MAX_INSTANCE                                        7
46 #define MAX_SEGMENT                                         6
47 
48 struct IP_BASE_INSTANCE {
49     unsigned int segment[MAX_SEGMENT];
50 };
51 
52 struct IP_BASE {
53     struct IP_BASE_INSTANCE instance[MAX_INSTANCE];
54 };
55 
56 #define regCLK1_CLK_PLL_REQ						0x0237
57 #define regCLK1_CLK_PLL_REQ_BASE_IDX			0
58 
59 #define CLK1_CLK_PLL_REQ__FbMult_int__SHIFT		0x0
60 #define CLK1_CLK_PLL_REQ__PllSpineDiv__SHIFT	0xc
61 #define CLK1_CLK_PLL_REQ__FbMult_frac__SHIFT	0x10
62 #define CLK1_CLK_PLL_REQ__FbMult_int_MASK		0x000001FFL
63 #define CLK1_CLK_PLL_REQ__PllSpineDiv_MASK		0x0000F000L
64 #define CLK1_CLK_PLL_REQ__FbMult_frac_MASK		0xFFFF0000L
65 
66 #define TO_CLK_MGR_DCN316(clk_mgr)\
67 	container_of(clk_mgr, struct clk_mgr_dcn316, base)
68 
dcn316_get_active_display_cnt_wa(struct dc * dc,struct dc_state * context)69 static int dcn316_get_active_display_cnt_wa(
70 		struct dc *dc,
71 		struct dc_state *context)
72 {
73 	int i, display_count;
74 	bool tmds_present = false;
75 
76 	display_count = 0;
77 	for (i = 0; i < context->stream_count; i++) {
78 		const struct dc_stream_state *stream = context->streams[i];
79 
80 		if (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A ||
81 				stream->signal == SIGNAL_TYPE_DVI_SINGLE_LINK ||
82 				stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK)
83 			tmds_present = true;
84 	}
85 
86 	for (i = 0; i < dc->link_count; i++) {
87 		const struct dc_link *link = dc->links[i];
88 
89 		/* abusing the fact that the dig and phy are coupled to see if the phy is enabled */
90 		if (link->link_enc && link->link_enc->funcs->is_dig_enabled &&
91 				link->link_enc->funcs->is_dig_enabled(link->link_enc))
92 			display_count++;
93 	}
94 
95 	/* WA for hang on HDMI after display off back back on*/
96 	if (display_count == 0 && tmds_present)
97 		display_count = 1;
98 
99 	return display_count;
100 }
101 
dcn316_disable_otg_wa(struct clk_mgr * clk_mgr_base,struct dc_state * context,bool safe_to_lower,bool disable)102 static void dcn316_disable_otg_wa(struct clk_mgr *clk_mgr_base, struct dc_state *context,
103 		bool safe_to_lower, bool disable)
104 {
105 	struct dc *dc = clk_mgr_base->ctx->dc;
106 	int i;
107 
108 	for (i = 0; i < dc->res_pool->pipe_count; ++i) {
109 		struct pipe_ctx *pipe = safe_to_lower
110 			? &context->res_ctx.pipe_ctx[i]
111 			: &dc->current_state->res_ctx.pipe_ctx[i];
112 
113 		if (pipe->top_pipe || pipe->prev_odm_pipe)
114 			continue;
115 		if (pipe->stream && (pipe->stream->dpms_off || dc_is_virtual_signal(pipe->stream->signal) ||
116 				     !pipe->stream->link_enc)) {
117 			if (disable) {
118 				if (pipe->stream_res.tg && pipe->stream_res.tg->funcs->immediate_disable_crtc)
119 					pipe->stream_res.tg->funcs->immediate_disable_crtc(pipe->stream_res.tg);
120 
121 				reset_sync_context_for_pipe(dc, context, i);
122 			} else
123 				pipe->stream_res.tg->funcs->enable_crtc(pipe->stream_res.tg);
124 		}
125 	}
126 }
127 
dcn316_enable_pme_wa(struct clk_mgr * clk_mgr_base)128 static void dcn316_enable_pme_wa(struct clk_mgr *clk_mgr_base)
129 {
130 	struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
131 
132 	dcn316_smu_enable_pme_wa(clk_mgr);
133 }
134 
dcn316_update_clocks(struct clk_mgr * clk_mgr_base,struct dc_state * context,bool safe_to_lower)135 static void dcn316_update_clocks(struct clk_mgr *clk_mgr_base,
136 			struct dc_state *context,
137 			bool safe_to_lower)
138 {
139 	union dmub_rb_cmd cmd;
140 	struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
141 	struct dc_clocks *new_clocks = &context->bw_ctx.bw.dcn.clk;
142 	struct dc *dc = clk_mgr_base->ctx->dc;
143 	int display_count;
144 	bool update_dppclk = false;
145 	bool update_dispclk = false;
146 	bool dpp_clock_lowered = false;
147 
148 	if (dc->work_arounds.skip_clock_update)
149 		return;
150 
151 	/*
152 	 * if it is safe to lower, but we are already in the lower state, we don't have to do anything
153 	 * also if safe to lower is false, we just go in the higher state
154 	 */
155 	clk_mgr_base->clks.zstate_support = new_clocks->zstate_support;
156 	if (safe_to_lower) {
157 		if (clk_mgr_base->clks.dtbclk_en && !new_clocks->dtbclk_en) {
158 			dcn316_smu_set_dtbclk(clk_mgr, false);
159 			clk_mgr_base->clks.dtbclk_en = new_clocks->dtbclk_en;
160 		}
161 		/* check that we're not already in lower */
162 		if (clk_mgr_base->clks.pwr_state != DCN_PWR_STATE_LOW_POWER) {
163 			display_count = dcn316_get_active_display_cnt_wa(dc, context);
164 			/* if we can go lower, go lower */
165 			if (display_count == 0) {
166 				union display_idle_optimization_u idle_info = { 0 };
167 				idle_info.idle_info.df_request_disabled = 1;
168 				idle_info.idle_info.phy_ref_clk_off = 1;
169 				idle_info.idle_info.s0i2_rdy = 1;
170 				dcn316_smu_set_display_idle_optimization(clk_mgr, idle_info.data);
171 				/* update power state */
172 				clk_mgr_base->clks.pwr_state = DCN_PWR_STATE_LOW_POWER;
173 			}
174 		}
175 	} else {
176 		if (!clk_mgr_base->clks.dtbclk_en && new_clocks->dtbclk_en) {
177 			dcn316_smu_set_dtbclk(clk_mgr, true);
178 			clk_mgr_base->clks.dtbclk_en = new_clocks->dtbclk_en;
179 		}
180 
181 		/* check that we're not already in D0 */
182 		if (clk_mgr_base->clks.pwr_state != DCN_PWR_STATE_MISSION_MODE) {
183 			union display_idle_optimization_u idle_info = { 0 };
184 			dcn316_smu_set_display_idle_optimization(clk_mgr, idle_info.data);
185 			/* update power state */
186 			clk_mgr_base->clks.pwr_state = DCN_PWR_STATE_MISSION_MODE;
187 		}
188 	}
189 
190 	if (should_set_clock(safe_to_lower, new_clocks->dcfclk_khz, clk_mgr_base->clks.dcfclk_khz)) {
191 		clk_mgr_base->clks.dcfclk_khz = new_clocks->dcfclk_khz;
192 		dcn316_smu_set_hard_min_dcfclk(clk_mgr, clk_mgr_base->clks.dcfclk_khz);
193 	}
194 
195 	if (should_set_clock(safe_to_lower,
196 			new_clocks->dcfclk_deep_sleep_khz, clk_mgr_base->clks.dcfclk_deep_sleep_khz)) {
197 		clk_mgr_base->clks.dcfclk_deep_sleep_khz = new_clocks->dcfclk_deep_sleep_khz;
198 		dcn316_smu_set_min_deep_sleep_dcfclk(clk_mgr, clk_mgr_base->clks.dcfclk_deep_sleep_khz);
199 	}
200 
201 	// workaround: Limit dppclk to 100Mhz to avoid lower eDP panel switch to plus 4K monitor underflow.
202 	if (new_clocks->dppclk_khz < 100000)
203 		new_clocks->dppclk_khz = 100000;
204 	if (new_clocks->dispclk_khz < 100000)
205 		new_clocks->dispclk_khz = 100000;
206 
207 	if (should_set_clock(safe_to_lower, new_clocks->dppclk_khz, clk_mgr->base.clks.dppclk_khz)) {
208 		if (clk_mgr->base.clks.dppclk_khz > new_clocks->dppclk_khz)
209 			dpp_clock_lowered = true;
210 		clk_mgr_base->clks.dppclk_khz = new_clocks->dppclk_khz;
211 		update_dppclk = true;
212 	}
213 
214 	if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz)) {
215 		dcn316_disable_otg_wa(clk_mgr_base, context, safe_to_lower, true);
216 
217 		clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz;
218 		dcn316_smu_set_dispclk(clk_mgr, clk_mgr_base->clks.dispclk_khz);
219 		dcn316_disable_otg_wa(clk_mgr_base, context, safe_to_lower, false);
220 
221 		update_dispclk = true;
222 	}
223 
224 	if (dpp_clock_lowered) {
225 		// increase per DPP DTO before lowering global dppclk
226 		dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
227 		dcn316_smu_set_dppclk(clk_mgr, clk_mgr_base->clks.dppclk_khz);
228 	} else {
229 		// increase global DPPCLK before lowering per DPP DTO
230 		if (update_dppclk || update_dispclk)
231 			dcn316_smu_set_dppclk(clk_mgr, clk_mgr_base->clks.dppclk_khz);
232 		// always update dtos unless clock is lowered and not safe to lower
233 		if (new_clocks->dppclk_khz >= dc->current_state->bw_ctx.bw.dcn.clk.dppclk_khz)
234 			dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
235 	}
236 
237 	// notify DMCUB of latest clocks
238 	memset(&cmd, 0, sizeof(cmd));
239 	cmd.notify_clocks.header.type = DMUB_CMD__CLK_MGR;
240 	cmd.notify_clocks.header.sub_type = DMUB_CMD__CLK_MGR_NOTIFY_CLOCKS;
241 	cmd.notify_clocks.clocks.dcfclk_khz = clk_mgr_base->clks.dcfclk_khz;
242 	cmd.notify_clocks.clocks.dcfclk_deep_sleep_khz =
243 		clk_mgr_base->clks.dcfclk_deep_sleep_khz;
244 	cmd.notify_clocks.clocks.dispclk_khz = clk_mgr_base->clks.dispclk_khz;
245 	cmd.notify_clocks.clocks.dppclk_khz = clk_mgr_base->clks.dppclk_khz;
246 
247 	dm_execute_dmub_cmd(dc->ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
248 }
249 
dcn316_dump_clk_registers(struct clk_state_registers_and_bypass * regs_and_bypass,struct clk_mgr * clk_mgr_base,struct clk_log_info * log_info)250 static void dcn316_dump_clk_registers(struct clk_state_registers_and_bypass *regs_and_bypass,
251 		struct clk_mgr *clk_mgr_base, struct clk_log_info *log_info)
252 {
253 	return;
254 }
255 
256 static struct clk_bw_params dcn316_bw_params = {
257 	.vram_type = Ddr4MemType,
258 	.num_channels = 1,
259 	.clk_table = {
260 		.num_entries = 5,
261 	},
262 
263 };
264 
265 static struct wm_table ddr4_wm_table = {
266 	.entries = {
267 		{
268 			.wm_inst = WM_A,
269 			.wm_type = WM_TYPE_PSTATE_CHG,
270 			.pstate_latency_us = 11.72,
271 			.sr_exit_time_us = 6.09,
272 			.sr_enter_plus_exit_time_us = 7.14,
273 			.valid = true,
274 		},
275 		{
276 			.wm_inst = WM_B,
277 			.wm_type = WM_TYPE_PSTATE_CHG,
278 			.pstate_latency_us = 11.72,
279 			.sr_exit_time_us = 10.12,
280 			.sr_enter_plus_exit_time_us = 11.48,
281 			.valid = true,
282 		},
283 		{
284 			.wm_inst = WM_C,
285 			.wm_type = WM_TYPE_PSTATE_CHG,
286 			.pstate_latency_us = 11.72,
287 			.sr_exit_time_us = 10.12,
288 			.sr_enter_plus_exit_time_us = 11.48,
289 			.valid = true,
290 		},
291 		{
292 			.wm_inst = WM_D,
293 			.wm_type = WM_TYPE_PSTATE_CHG,
294 			.pstate_latency_us = 11.72,
295 			.sr_exit_time_us = 10.12,
296 			.sr_enter_plus_exit_time_us = 11.48,
297 			.valid = true,
298 		},
299 	}
300 };
301 
302 static struct wm_table lpddr5_wm_table = {
303 	.entries = {
304 		{
305 			.wm_inst = WM_A,
306 			.wm_type = WM_TYPE_PSTATE_CHG,
307 			.pstate_latency_us = 11.65333,
308 			.sr_exit_time_us = 11.5,
309 			.sr_enter_plus_exit_time_us = 14.5,
310 			.valid = true,
311 		},
312 		{
313 			.wm_inst = WM_B,
314 			.wm_type = WM_TYPE_PSTATE_CHG,
315 			.pstate_latency_us = 11.65333,
316 			.sr_exit_time_us = 11.5,
317 			.sr_enter_plus_exit_time_us = 14.5,
318 			.valid = true,
319 		},
320 		{
321 			.wm_inst = WM_C,
322 			.wm_type = WM_TYPE_PSTATE_CHG,
323 			.pstate_latency_us = 11.65333,
324 			.sr_exit_time_us = 11.5,
325 			.sr_enter_plus_exit_time_us = 14.5,
326 			.valid = true,
327 		},
328 		{
329 			.wm_inst = WM_D,
330 			.wm_type = WM_TYPE_PSTATE_CHG,
331 			.pstate_latency_us = 11.65333,
332 			.sr_exit_time_us = 11.5,
333 			.sr_enter_plus_exit_time_us = 14.5,
334 			.valid = true,
335 		},
336 	}
337 };
338 
339 static DpmClocks_316_t dummy_clocks;
340 
341 static struct dcn316_watermarks dummy_wms = { 0 };
342 
dcn316_build_watermark_ranges(struct clk_bw_params * bw_params,struct dcn316_watermarks * table)343 static void dcn316_build_watermark_ranges(struct clk_bw_params *bw_params, struct dcn316_watermarks *table)
344 {
345 	int i, num_valid_sets;
346 
347 	num_valid_sets = 0;
348 
349 	for (i = 0; i < WM_SET_COUNT; i++) {
350 		/* skip empty entries, the smu array has no holes*/
351 		if (!bw_params->wm_table.entries[i].valid)
352 			continue;
353 
354 		table->WatermarkRow[WM_DCFCLK][num_valid_sets].WmSetting = bw_params->wm_table.entries[i].wm_inst;
355 		table->WatermarkRow[WM_DCFCLK][num_valid_sets].WmType = bw_params->wm_table.entries[i].wm_type;
356 		/* We will not select WM based on fclk, so leave it as unconstrained */
357 		table->WatermarkRow[WM_DCFCLK][num_valid_sets].MinClock = 0;
358 		table->WatermarkRow[WM_DCFCLK][num_valid_sets].MaxClock = 0xFFFF;
359 
360 		if (table->WatermarkRow[WM_DCFCLK][num_valid_sets].WmType == WM_TYPE_PSTATE_CHG) {
361 			if (i == 0)
362 				table->WatermarkRow[WM_DCFCLK][num_valid_sets].MinMclk = 0;
363 			else {
364 				/* add 1 to make it non-overlapping with next lvl */
365 				table->WatermarkRow[WM_DCFCLK][num_valid_sets].MinMclk =
366 						bw_params->clk_table.entries[i - 1].dcfclk_mhz + 1;
367 			}
368 			table->WatermarkRow[WM_DCFCLK][num_valid_sets].MaxMclk =
369 					bw_params->clk_table.entries[i].dcfclk_mhz;
370 
371 		} else {
372 			/* unconstrained for memory retraining */
373 			table->WatermarkRow[WM_DCFCLK][num_valid_sets].MinClock = 0;
374 			table->WatermarkRow[WM_DCFCLK][num_valid_sets].MaxClock = 0xFFFF;
375 
376 			/* Modify previous watermark range to cover up to max */
377 			table->WatermarkRow[WM_DCFCLK][num_valid_sets - 1].MaxClock = 0xFFFF;
378 		}
379 		num_valid_sets++;
380 	}
381 
382 	ASSERT(num_valid_sets != 0); /* Must have at least one set of valid watermarks */
383 
384 	/* modify the min and max to make sure we cover the whole range*/
385 	table->WatermarkRow[WM_DCFCLK][0].MinMclk = 0;
386 	table->WatermarkRow[WM_DCFCLK][0].MinClock = 0;
387 	table->WatermarkRow[WM_DCFCLK][num_valid_sets - 1].MaxMclk = 0xFFFF;
388 	table->WatermarkRow[WM_DCFCLK][num_valid_sets - 1].MaxClock = 0xFFFF;
389 
390 	/* This is for writeback only, does not matter currently as no writeback support*/
391 	table->WatermarkRow[WM_SOCCLK][0].WmSetting = WM_A;
392 	table->WatermarkRow[WM_SOCCLK][0].MinClock = 0;
393 	table->WatermarkRow[WM_SOCCLK][0].MaxClock = 0xFFFF;
394 	table->WatermarkRow[WM_SOCCLK][0].MinMclk = 0;
395 	table->WatermarkRow[WM_SOCCLK][0].MaxMclk = 0xFFFF;
396 }
397 
dcn316_notify_wm_ranges(struct clk_mgr * clk_mgr_base)398 static void dcn316_notify_wm_ranges(struct clk_mgr *clk_mgr_base)
399 {
400 	struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
401 	struct clk_mgr_dcn316 *clk_mgr_dcn316 = TO_CLK_MGR_DCN316(clk_mgr);
402 	struct dcn316_watermarks *table = clk_mgr_dcn316->smu_wm_set.wm_set;
403 
404 	if (!clk_mgr->smu_ver)
405 		return;
406 
407 	if (!table || clk_mgr_dcn316->smu_wm_set.mc_address.quad_part == 0)
408 		return;
409 
410 	memset(table, 0, sizeof(*table));
411 
412 	dcn316_build_watermark_ranges(clk_mgr_base->bw_params, table);
413 
414 	dcn316_smu_set_dram_addr_high(clk_mgr,
415 			clk_mgr_dcn316->smu_wm_set.mc_address.high_part);
416 	dcn316_smu_set_dram_addr_low(clk_mgr,
417 			clk_mgr_dcn316->smu_wm_set.mc_address.low_part);
418 	dcn316_smu_transfer_wm_table_dram_2_smu(clk_mgr);
419 }
420 
dcn316_get_dpm_table_from_smu(struct clk_mgr_internal * clk_mgr,struct dcn316_smu_dpm_clks * smu_dpm_clks)421 static void dcn316_get_dpm_table_from_smu(struct clk_mgr_internal *clk_mgr,
422 		struct dcn316_smu_dpm_clks *smu_dpm_clks)
423 {
424 	DpmClocks_316_t *table = smu_dpm_clks->dpm_clks;
425 
426 	if (!clk_mgr->smu_ver)
427 		return;
428 
429 	if (!table || smu_dpm_clks->mc_address.quad_part == 0)
430 		return;
431 
432 	memset(table, 0, sizeof(*table));
433 
434 	dcn316_smu_set_dram_addr_high(clk_mgr,
435 			smu_dpm_clks->mc_address.high_part);
436 	dcn316_smu_set_dram_addr_low(clk_mgr,
437 			smu_dpm_clks->mc_address.low_part);
438 	dcn316_smu_transfer_dpm_table_smu_2_dram(clk_mgr);
439 }
440 
find_max_clk_value(const uint32_t clocks[],uint32_t num_clocks)441 static uint32_t find_max_clk_value(const uint32_t clocks[], uint32_t num_clocks)
442 {
443 	uint32_t max = 0;
444 	int i;
445 
446 	for (i = 0; i < num_clocks; ++i) {
447 		if (clocks[i] > max)
448 			max = clocks[i];
449 	}
450 
451 	return max;
452 }
453 
find_clk_for_voltage(const DpmClocks_316_t * clock_table,const uint32_t clocks[],unsigned int voltage)454 static unsigned int find_clk_for_voltage(
455 		const DpmClocks_316_t *clock_table,
456 		const uint32_t clocks[],
457 		unsigned int voltage)
458 {
459 	int i;
460 	int max_voltage = 0;
461 	int clock = 0;
462 
463 	for (i = 0; i < NUM_SOC_VOLTAGE_LEVELS; i++) {
464 		if (clock_table->SocVoltage[i] == voltage) {
465 			return clocks[i];
466 		} else if (clock_table->SocVoltage[i] >= max_voltage &&
467 				clock_table->SocVoltage[i] < voltage) {
468 			max_voltage = clock_table->SocVoltage[i];
469 			clock = clocks[i];
470 		}
471 	}
472 
473 	ASSERT(clock);
474 	return clock;
475 }
476 
dcn316_clk_mgr_helper_populate_bw_params(struct clk_mgr_internal * clk_mgr,struct integrated_info * bios_info,const DpmClocks_316_t * clock_table)477 static void dcn316_clk_mgr_helper_populate_bw_params(
478 		struct clk_mgr_internal *clk_mgr,
479 		struct integrated_info *bios_info,
480 		const DpmClocks_316_t *clock_table)
481 {
482 	int i, j;
483 	struct clk_bw_params *bw_params = clk_mgr->base.bw_params;
484 	uint32_t max_dispclk = 0, max_dppclk = 0;
485 
486 	j = -1;
487 
488 	ASSERT(NUM_DF_PSTATE_LEVELS <= MAX_NUM_DPM_LVL);
489 
490 	/* Find lowest DPM, FCLK is filled in reverse order*/
491 
492 	for (i = NUM_DF_PSTATE_LEVELS - 1; i >= 0; i--) {
493 		if (clock_table->DfPstateTable[i].FClk != 0) {
494 			j = i;
495 			break;
496 		}
497 	}
498 
499 	if (j == -1) {
500 		/* clock table is all 0s, just use our own hardcode */
501 		ASSERT(0);
502 		return;
503 	}
504 
505 	bw_params->clk_table.num_entries = j + 1;
506 
507 	/* dispclk and dppclk can be max at any voltage, same number of levels for both */
508 	if (clock_table->NumDispClkLevelsEnabled <= NUM_DISPCLK_DPM_LEVELS &&
509 	    clock_table->NumDispClkLevelsEnabled <= NUM_DPPCLK_DPM_LEVELS) {
510 		max_dispclk = find_max_clk_value(clock_table->DispClocks, clock_table->NumDispClkLevelsEnabled);
511 		max_dppclk = find_max_clk_value(clock_table->DppClocks, clock_table->NumDispClkLevelsEnabled);
512 	} else {
513 		ASSERT(0);
514 	}
515 
516 	for (i = 0; i < bw_params->clk_table.num_entries; i++, j--) {
517 		int temp;
518 
519 		bw_params->clk_table.entries[i].fclk_mhz = clock_table->DfPstateTable[j].FClk;
520 		bw_params->clk_table.entries[i].memclk_mhz = clock_table->DfPstateTable[j].MemClk;
521 		bw_params->clk_table.entries[i].voltage = clock_table->DfPstateTable[j].Voltage;
522 		switch (clock_table->DfPstateTable[j].WckRatio) {
523 		case WCK_RATIO_1_2:
524 			bw_params->clk_table.entries[i].wck_ratio = 2;
525 			break;
526 		case WCK_RATIO_1_4:
527 			bw_params->clk_table.entries[i].wck_ratio = 4;
528 			break;
529 		default:
530 			bw_params->clk_table.entries[i].wck_ratio = 1;
531 		}
532 		temp = find_clk_for_voltage(clock_table, clock_table->DcfClocks, clock_table->DfPstateTable[j].Voltage);
533 		if (temp)
534 			bw_params->clk_table.entries[i].dcfclk_mhz = temp;
535 		temp = find_clk_for_voltage(clock_table, clock_table->SocClocks, clock_table->DfPstateTable[j].Voltage);
536 		if (temp)
537 			bw_params->clk_table.entries[i].socclk_mhz = temp;
538 		bw_params->clk_table.entries[i].dispclk_mhz = max_dispclk;
539 		bw_params->clk_table.entries[i].dppclk_mhz = max_dppclk;
540 	}
541 
542 	bw_params->vram_type = bios_info->memory_type;
543 	bw_params->num_channels = bios_info->ma_channel_number;
544 	bw_params->dram_channel_width_bytes = bios_info->memory_type == 0x22 ? 8 : 4;
545 
546 	for (i = 0; i < WM_SET_COUNT; i++) {
547 		bw_params->wm_table.entries[i].wm_inst = i;
548 
549 		if (i >= bw_params->clk_table.num_entries) {
550 			bw_params->wm_table.entries[i].valid = false;
551 			continue;
552 		}
553 
554 		bw_params->wm_table.entries[i].wm_type = WM_TYPE_PSTATE_CHG;
555 		bw_params->wm_table.entries[i].valid = true;
556 	}
557 }
558 
559 
560 
561 static struct clk_mgr_funcs dcn316_funcs = {
562 	.enable_pme_wa = dcn316_enable_pme_wa,
563 	.get_dp_ref_clk_frequency = dce12_get_dp_ref_freq_khz,
564 	.get_dtb_ref_clk_frequency = dcn31_get_dtb_ref_freq_khz,
565 	.update_clocks = dcn316_update_clocks,
566 	.init_clocks = dcn31_init_clocks,
567 	.are_clock_states_equal = dcn31_are_clock_states_equal,
568 	.notify_wm_ranges = dcn316_notify_wm_ranges
569 };
570 extern struct clk_mgr_funcs dcn3_fpga_funcs;
571 
dcn316_clk_mgr_construct(struct dc_context * ctx,struct clk_mgr_dcn316 * clk_mgr,struct pp_smu_funcs * pp_smu,struct dccg * dccg)572 void dcn316_clk_mgr_construct(
573 		struct dc_context *ctx,
574 		struct clk_mgr_dcn316 *clk_mgr,
575 		struct pp_smu_funcs *pp_smu,
576 		struct dccg *dccg)
577 {
578 	struct dcn316_smu_dpm_clks smu_dpm_clks = { 0 };
579 	struct clk_log_info log_info = {0};
580 
581 	clk_mgr->base.base.ctx = ctx;
582 	clk_mgr->base.base.funcs = &dcn316_funcs;
583 
584 	clk_mgr->base.pp_smu = pp_smu;
585 
586 	clk_mgr->base.dccg = dccg;
587 	clk_mgr->base.dfs_bypass_disp_clk = 0;
588 
589 	clk_mgr->base.dprefclk_ss_percentage = 0;
590 	clk_mgr->base.dprefclk_ss_divider = 1000;
591 	clk_mgr->base.ss_on_dprefclk = false;
592 	clk_mgr->base.dfs_ref_freq_khz = 48000;
593 
594 	clk_mgr->smu_wm_set.wm_set = (struct dcn316_watermarks *)dm_helpers_allocate_gpu_mem(
595 				clk_mgr->base.base.ctx,
596 				DC_MEM_ALLOC_TYPE_FRAME_BUFFER,
597 				sizeof(struct dcn316_watermarks),
598 				&clk_mgr->smu_wm_set.mc_address.quad_part);
599 
600 	if (!clk_mgr->smu_wm_set.wm_set) {
601 		clk_mgr->smu_wm_set.wm_set = &dummy_wms;
602 		clk_mgr->smu_wm_set.mc_address.quad_part = 0;
603 	}
604 	ASSERT(clk_mgr->smu_wm_set.wm_set);
605 
606 	smu_dpm_clks.dpm_clks = (DpmClocks_316_t *)dm_helpers_allocate_gpu_mem(
607 				clk_mgr->base.base.ctx,
608 				DC_MEM_ALLOC_TYPE_FRAME_BUFFER,
609 				sizeof(DpmClocks_316_t),
610 				&smu_dpm_clks.mc_address.quad_part);
611 
612 	if (smu_dpm_clks.dpm_clks == NULL) {
613 		smu_dpm_clks.dpm_clks = &dummy_clocks;
614 		smu_dpm_clks.mc_address.quad_part = 0;
615 	}
616 
617 	ASSERT(smu_dpm_clks.dpm_clks);
618 
619 	clk_mgr->base.smu_ver = dcn316_smu_get_smu_version(&clk_mgr->base);
620 
621 	if (clk_mgr->base.smu_ver > 0)
622 		clk_mgr->base.smu_present = true;
623 
624 	// Skip this for now as it did not work on DCN315, renable during bring up
625 	//clk_mgr->base.base.dentist_vco_freq_khz = get_vco_frequency_from_reg(&clk_mgr->base);
626 	clk_mgr->base.base.dentist_vco_freq_khz = 2500000;
627 
628 	/* in case we don't get a value from the register, use default */
629 	if (clk_mgr->base.base.dentist_vco_freq_khz == 0)
630 		clk_mgr->base.base.dentist_vco_freq_khz = 2500000; /* 2400MHz */
631 
632 
633 	if (ctx->dc_bios->integrated_info->memory_type == LpDdr5MemType) {
634 		dcn316_bw_params.wm_table = lpddr5_wm_table;
635 	} else {
636 		dcn316_bw_params.wm_table = ddr4_wm_table;
637 	}
638 	/* Saved clocks configured at boot for debug purposes */
639 	dcn316_dump_clk_registers(&clk_mgr->base.base.boot_snapshot,
640 				  &clk_mgr->base.base, &log_info);
641 
642 	clk_mgr->base.base.dprefclk_khz = 600000;
643 	clk_mgr->base.base.dprefclk_khz = dcn316_smu_get_dpref_clk(&clk_mgr->base);
644 	clk_mgr->base.base.clks.ref_dtbclk_khz = clk_mgr->base.base.dprefclk_khz;
645 	dce_clock_read_ss_info(&clk_mgr->base);
646 	/*clk_mgr->base.dccg->ref_dtbclk_khz =
647 	dce_adjust_dp_ref_freq_for_ss(&clk_mgr->base, clk_mgr->base.base.dprefclk_khz);*/
648 
649 	clk_mgr->base.base.bw_params = &dcn316_bw_params;
650 
651 	if (clk_mgr->base.base.ctx->dc->debug.pstate_enabled) {
652 		dcn316_get_dpm_table_from_smu(&clk_mgr->base, &smu_dpm_clks);
653 
654 		if (ctx->dc_bios && ctx->dc_bios->integrated_info) {
655 			dcn316_clk_mgr_helper_populate_bw_params(
656 					&clk_mgr->base,
657 					ctx->dc_bios->integrated_info,
658 					smu_dpm_clks.dpm_clks);
659 		}
660 	}
661 
662 	if (smu_dpm_clks.dpm_clks && smu_dpm_clks.mc_address.quad_part != 0)
663 		dm_helpers_free_gpu_mem(clk_mgr->base.base.ctx, DC_MEM_ALLOC_TYPE_FRAME_BUFFER,
664 				smu_dpm_clks.dpm_clks);
665 }
666 
dcn316_clk_mgr_destroy(struct clk_mgr_internal * clk_mgr_int)667 void dcn316_clk_mgr_destroy(struct clk_mgr_internal *clk_mgr_int)
668 {
669 	struct clk_mgr_dcn316 *clk_mgr = TO_CLK_MGR_DCN316(clk_mgr_int);
670 
671 	if (clk_mgr->smu_wm_set.wm_set && clk_mgr->smu_wm_set.mc_address.quad_part != 0)
672 		dm_helpers_free_gpu_mem(clk_mgr_int->base.ctx, DC_MEM_ALLOC_TYPE_FRAME_BUFFER,
673 				clk_mgr->smu_wm_set.wm_set);
674 }
675