1 /*
2 * Copyright 2012-16 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 "core_types.h"
27 #include "clk_mgr_internal.h"
28
29 #include "dce/dce_11_0_d.h"
30 #include "dce/dce_11_0_sh_mask.h"
31 #include "dce110_clk_mgr.h"
32 #include "../clk_mgr/dce100/dce_clk_mgr.h"
33
34 /* set register offset */
35 #define SR(reg_name)\
36 .reg_name = mm ## reg_name
37
38 /* set register offset with instance */
39 #define SRI(reg_name, block, id)\
40 .reg_name = mm ## block ## id ## _ ## reg_name
41
42 static const struct clk_mgr_registers disp_clk_regs = {
43 CLK_COMMON_REG_LIST_DCE_BASE()
44 };
45
46 static const struct clk_mgr_shift disp_clk_shift = {
47 CLK_COMMON_MASK_SH_LIST_DCE_COMMON_BASE(__SHIFT)
48 };
49
50 static const struct clk_mgr_mask disp_clk_mask = {
51 CLK_COMMON_MASK_SH_LIST_DCE_COMMON_BASE(_MASK)
52 };
53
54 static const struct state_dependent_clocks dce110_max_clks_by_state[] = {
55 /*ClocksStateInvalid - should not be used*/
56 { .display_clk_khz = 0, .pixel_clk_khz = 0 },
57 /*ClocksStateUltraLow - currently by HW design team not supposed to be used*/
58 { .display_clk_khz = 352000, .pixel_clk_khz = 330000 },
59 /*ClocksStateLow*/
60 { .display_clk_khz = 352000, .pixel_clk_khz = 330000 },
61 /*ClocksStateNominal*/
62 { .display_clk_khz = 467000, .pixel_clk_khz = 400000 },
63 /*ClocksStatePerformance*/
64 { .display_clk_khz = 643000, .pixel_clk_khz = 400000 } };
65
determine_sclk_from_bounding_box(const struct dc * dc,int required_sclk)66 static int determine_sclk_from_bounding_box(
67 const struct dc *dc,
68 int required_sclk)
69 {
70 int i;
71
72 /*
73 * Some asics do not give us sclk levels, so we just report the actual
74 * required sclk
75 */
76 if (dc->sclk_lvls.num_levels == 0)
77 return required_sclk;
78
79 for (i = 0; i < dc->sclk_lvls.num_levels; i++) {
80 if (dc->sclk_lvls.clocks_in_khz[i] >= required_sclk)
81 return dc->sclk_lvls.clocks_in_khz[i];
82 }
83 /*
84 * even maximum level could not satisfy requirement, this
85 * is unexpected at this stage, should have been caught at
86 * validation time
87 */
88 ASSERT(0);
89 return dc->sclk_lvls.clocks_in_khz[dc->sclk_lvls.num_levels - 1];
90 }
91
dce110_get_min_vblank_time_us(const struct dc_state * context)92 uint32_t dce110_get_min_vblank_time_us(const struct dc_state *context)
93 {
94 uint8_t j;
95 uint32_t min_vertical_blank_time = -1;
96
97 for (j = 0; j < context->stream_count; j++) {
98 struct dc_stream_state *stream = context->streams[j];
99 uint32_t vertical_blank_in_pixels = 0;
100 uint32_t vertical_blank_time = 0;
101 uint32_t vertical_total_min = stream->timing.v_total;
102 struct dc_crtc_timing_adjust adjust = stream->adjust;
103 if (adjust.v_total_max != adjust.v_total_min)
104 vertical_total_min = adjust.v_total_min;
105
106 vertical_blank_in_pixels = stream->timing.h_total *
107 (vertical_total_min
108 - stream->timing.v_addressable);
109 vertical_blank_time = vertical_blank_in_pixels
110 * 10000 / stream->timing.pix_clk_100hz;
111
112 if (min_vertical_blank_time > vertical_blank_time)
113 min_vertical_blank_time = vertical_blank_time;
114 }
115
116 return min_vertical_blank_time;
117 }
118
dce110_fill_display_configs(const struct dc_state * context,struct dm_pp_display_configuration * pp_display_cfg)119 void dce110_fill_display_configs(
120 const struct dc_state *context,
121 struct dm_pp_display_configuration *pp_display_cfg)
122 {
123 struct dc *dc = context->clk_mgr->ctx->dc;
124 int j;
125 int num_cfgs = 0;
126
127 pp_display_cfg->avail_mclk_switch_time_us = dce110_get_min_vblank_time_us(context);
128 pp_display_cfg->disp_clk_khz = dc->clk_mgr->clks.dispclk_khz;
129 pp_display_cfg->avail_mclk_switch_time_in_disp_active_us = 0;
130 pp_display_cfg->crtc_index = dc->res_pool->res_cap->num_timing_generator;
131
132 for (j = 0; j < context->stream_count; j++) {
133 int k;
134
135 const struct dc_stream_state *stream = context->streams[j];
136 struct dm_pp_single_disp_config *cfg =
137 &pp_display_cfg->disp_configs[num_cfgs];
138 const struct pipe_ctx *pipe_ctx = NULL;
139
140 for (k = 0; k < MAX_PIPES; k++)
141 if (stream == context->res_ctx.pipe_ctx[k].stream) {
142 pipe_ctx = &context->res_ctx.pipe_ctx[k];
143 break;
144 }
145
146 ASSERT(pipe_ctx != NULL);
147
148 /* only notify active stream */
149 if (stream->dpms_off)
150 continue;
151
152 num_cfgs++;
153 cfg->signal = pipe_ctx->stream->signal;
154 cfg->pipe_idx = pipe_ctx->stream_res.tg->inst;
155 cfg->src_height = stream->src.height;
156 cfg->src_width = stream->src.width;
157 cfg->ddi_channel_mapping =
158 stream->link->ddi_channel_mapping.raw;
159 cfg->transmitter =
160 stream->link->link_enc->transmitter;
161 cfg->link_settings.lane_count =
162 stream->link->cur_link_settings.lane_count;
163 cfg->link_settings.link_rate =
164 stream->link->cur_link_settings.link_rate;
165 cfg->link_settings.link_spread =
166 stream->link->cur_link_settings.link_spread;
167 cfg->sym_clock = stream->phy_pix_clk;
168 /* Round v_refresh*/
169 cfg->v_refresh = stream->timing.pix_clk_100hz * 100;
170 cfg->v_refresh /= stream->timing.h_total;
171 cfg->v_refresh = (cfg->v_refresh + stream->timing.v_total / 2)
172 / stream->timing.v_total;
173
174 /* Find first CRTC index and calculate its line time.
175 * This is necessary for DPM on SI GPUs.
176 */
177 if (cfg->pipe_idx < pp_display_cfg->crtc_index) {
178 const struct dc_crtc_timing *timing =
179 &context->streams[0]->timing;
180
181 pp_display_cfg->crtc_index = cfg->pipe_idx;
182 pp_display_cfg->line_time_in_us =
183 timing->h_total * 10000 / timing->pix_clk_100hz;
184 }
185 }
186
187 if (!num_cfgs) {
188 pp_display_cfg->crtc_index = 0;
189 pp_display_cfg->line_time_in_us = 0;
190 }
191
192 pp_display_cfg->display_count = num_cfgs;
193 }
194
dce11_pplib_apply_display_requirements(struct dc * dc,struct dc_state * context)195 void dce11_pplib_apply_display_requirements(
196 struct dc *dc,
197 struct dc_state *context)
198 {
199 struct dm_pp_display_configuration *pp_display_cfg = &context->pp_display_cfg;
200 int memory_type_multiplier = MEMORY_TYPE_MULTIPLIER_CZ;
201
202 if (dc->bw_vbios && dc->bw_vbios->memory_type == bw_def_hbm)
203 memory_type_multiplier = MEMORY_TYPE_HBM;
204
205 pp_display_cfg->all_displays_in_sync =
206 context->bw_ctx.bw.dce.all_displays_in_sync;
207 pp_display_cfg->nb_pstate_switch_disable =
208 context->bw_ctx.bw.dce.nbp_state_change_enable == false;
209 pp_display_cfg->cpu_cc6_disable =
210 context->bw_ctx.bw.dce.cpuc_state_change_enable == false;
211 pp_display_cfg->cpu_pstate_disable =
212 context->bw_ctx.bw.dce.cpup_state_change_enable == false;
213 pp_display_cfg->cpu_pstate_separation_time =
214 context->bw_ctx.bw.dce.blackout_recovery_time_us;
215
216 /*
217 * TODO: determine whether the bandwidth has reached memory's limitation
218 * , then change minimum memory clock based on real-time bandwidth
219 * limitation.
220 */
221 if (dc->bw_vbios && (dc->ctx->asic_id.chip_family == FAMILY_AI) &&
222 ASICREV_IS_VEGA20_P(dc->ctx->asic_id.hw_internal_rev) && (context->stream_count >= 2)) {
223 pp_display_cfg->min_memory_clock_khz = max(pp_display_cfg->min_memory_clock_khz,
224 (uint32_t) div64_s64(
225 div64_s64(dc->bw_vbios->high_yclk.value,
226 memory_type_multiplier), 10000));
227 } else {
228 pp_display_cfg->min_memory_clock_khz = context->bw_ctx.bw.dce.yclk_khz
229 / memory_type_multiplier;
230 }
231
232 pp_display_cfg->min_engine_clock_khz = determine_sclk_from_bounding_box(
233 dc,
234 context->bw_ctx.bw.dce.sclk_khz);
235
236 /*
237 * As workaround for >4x4K lightup set dcfclock to min_engine_clock value.
238 * This is not required for less than 5 displays,
239 * thus don't request decfclk in dc to avoid impact
240 * on power saving.
241 *
242 */
243 pp_display_cfg->min_dcfclock_khz = (context->stream_count > 4) ?
244 pp_display_cfg->min_engine_clock_khz : 0;
245
246 pp_display_cfg->min_engine_clock_deep_sleep_khz
247 = context->bw_ctx.bw.dce.sclk_deep_sleep_khz;
248
249 dce110_fill_display_configs(context, pp_display_cfg);
250
251 if (memcmp(&dc->current_state->pp_display_cfg, pp_display_cfg, sizeof(*pp_display_cfg)) != 0)
252 dm_pp_apply_display_requirements(dc->ctx, pp_display_cfg);
253 }
254
dce11_update_clocks(struct clk_mgr * clk_mgr_base,struct dc_state * context,bool safe_to_lower)255 static void dce11_update_clocks(struct clk_mgr *clk_mgr_base,
256 struct dc_state *context,
257 bool safe_to_lower)
258 {
259 struct clk_mgr_internal *clk_mgr_dce = TO_CLK_MGR_INTERNAL(clk_mgr_base);
260 struct dm_pp_power_level_change_request level_change_req;
261 int patched_disp_clk = context->bw_ctx.bw.dce.dispclk_khz;
262
263 /*TODO: W/A for dal3 linux, investigate why this works */
264 if (!clk_mgr_dce->dfs_bypass_active)
265 patched_disp_clk = patched_disp_clk * 115 / 100;
266
267 level_change_req.power_level = dce_get_required_clocks_state(clk_mgr_base, context);
268 /* get max clock state from PPLIB */
269 if ((level_change_req.power_level < clk_mgr_dce->cur_min_clks_state && safe_to_lower)
270 || level_change_req.power_level > clk_mgr_dce->cur_min_clks_state) {
271 if (dm_pp_apply_power_level_change_request(clk_mgr_base->ctx, &level_change_req))
272 clk_mgr_dce->cur_min_clks_state = level_change_req.power_level;
273 }
274
275 if (should_set_clock(safe_to_lower, patched_disp_clk, clk_mgr_base->clks.dispclk_khz)) {
276 context->bw_ctx.bw.dce.dispclk_khz = dce_set_clock(clk_mgr_base, patched_disp_clk);
277 clk_mgr_base->clks.dispclk_khz = patched_disp_clk;
278 }
279 dce11_pplib_apply_display_requirements(clk_mgr_base->ctx->dc, context);
280 }
281
282 static struct clk_mgr_funcs dce110_funcs = {
283 .get_dp_ref_clk_frequency = dce_get_dp_ref_freq_khz,
284 .update_clocks = dce11_update_clocks
285 };
286
dce110_clk_mgr_construct(struct dc_context * ctx,struct clk_mgr_internal * clk_mgr)287 void dce110_clk_mgr_construct(
288 struct dc_context *ctx,
289 struct clk_mgr_internal *clk_mgr)
290 {
291 dce_clk_mgr_construct(ctx, clk_mgr);
292
293 memcpy(clk_mgr->max_clks_by_state,
294 dce110_max_clks_by_state,
295 sizeof(dce110_max_clks_by_state));
296
297 clk_mgr->regs = &disp_clk_regs;
298 clk_mgr->clk_mgr_shift = &disp_clk_shift;
299 clk_mgr->clk_mgr_mask = &disp_clk_mask;
300 clk_mgr->base.funcs = &dce110_funcs;
301
302 }
303