1 /*
2 * Copyright 2020 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 "dccg.h"
27 #include "clk_mgr_internal.h"
28 #include "dcn30_clk_mgr_smu_msg.h"
29 #include "dcn20/dcn20_clk_mgr.h"
30 #include "dce100/dce_clk_mgr.h"
31 #include "dcn30/dcn30_clk_mgr.h"
32 #include "dml/dcn30/dcn30_fpu.h"
33 #include "reg_helper.h"
34 #include "core_types.h"
35 #include "dm_helpers.h"
36 #include "atomfirmware.h"
37 #include "sienna_cichlid_ip_offset.h"
38 #include "dcn/dcn_3_0_0_offset.h"
39 #include "dcn/dcn_3_0_0_sh_mask.h"
40 #include "nbio/nbio_7_4_offset.h"
41 #include "dpcs/dpcs_3_0_0_offset.h"
42 #include "dpcs/dpcs_3_0_0_sh_mask.h"
43 #include "mmhub/mmhub_2_0_0_offset.h"
44 #include "mmhub/mmhub_2_0_0_sh_mask.h"
45 #include "dcn30_smu11_driver_if.h"
46
47 #undef FN
48 #define FN(reg_name, field_name) \
49 clk_mgr->clk_mgr_shift->field_name, clk_mgr->clk_mgr_mask->field_name
50
51 #define REG(reg) \
52 (clk_mgr->regs->reg)
53
54 #define BASE_INNER(seg) DCN_BASE__INST0_SEG ## seg
55
56 #define BASE(seg) BASE_INNER(seg)
57
58 #define SR(reg_name)\
59 .reg_name = BASE(mm ## reg_name ## _BASE_IDX) + \
60 mm ## reg_name
61
62 #undef CLK_SRI
63 #define CLK_SRI(reg_name, block, inst)\
64 .reg_name = mm ## block ## _ ## reg_name
65
66 static const struct clk_mgr_registers clk_mgr_regs = {
67 CLK_REG_LIST_DCN3()
68 };
69
70 static const struct clk_mgr_shift clk_mgr_shift = {
71 CLK_COMMON_MASK_SH_LIST_DCN20_BASE(__SHIFT)
72 };
73
74 static const struct clk_mgr_mask clk_mgr_mask = {
75 CLK_COMMON_MASK_SH_LIST_DCN20_BASE(_MASK)
76 };
77
78
79 /* Query SMU for all clock states for a particular clock */
dcn3_init_single_clock(struct clk_mgr_internal * clk_mgr,uint32_t clk,unsigned int * entry_0,unsigned int * num_levels)80 static void dcn3_init_single_clock(struct clk_mgr_internal *clk_mgr, uint32_t clk, unsigned int *entry_0, unsigned int *num_levels)
81 {
82 unsigned int i;
83 char *entry_i = (char *)entry_0;
84 uint32_t ret = dcn30_smu_get_dpm_freq_by_index(clk_mgr, clk, 0xFF);
85
86 if (ret & (1 << 31))
87 /* fine-grained, only min and max */
88 *num_levels = 2;
89 else
90 /* discrete, a number of fixed states */
91 /* will set num_levels to 0 on failure */
92 *num_levels = ret & 0xFF;
93
94 /* if the initial message failed, num_levels will be 0 */
95 for (i = 0; i < *num_levels; i++) {
96 *((unsigned int *)entry_i) = (dcn30_smu_get_dpm_freq_by_index(clk_mgr, clk, i) & 0xFFFF);
97 entry_i += sizeof(clk_mgr->base.bw_params->clk_table.entries[0]);
98 }
99 }
100
dcn3_build_wm_range_table(struct clk_mgr_internal * clk_mgr)101 static void dcn3_build_wm_range_table(struct clk_mgr_internal *clk_mgr)
102 {
103 DC_FP_START();
104 dcn3_fpu_build_wm_range_table(&clk_mgr->base);
105 DC_FP_END();
106 }
107
dcn3_init_clocks(struct clk_mgr * clk_mgr_base)108 void dcn3_init_clocks(struct clk_mgr *clk_mgr_base)
109 {
110 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
111 unsigned int num_levels;
112
113 memset(&(clk_mgr_base->clks), 0, sizeof(struct dc_clocks));
114 clk_mgr_base->clks.p_state_change_support = true;
115 clk_mgr_base->clks.prev_p_state_change_support = true;
116 clk_mgr->smu_present = false;
117
118 if (!clk_mgr_base->bw_params)
119 return;
120
121 if (!clk_mgr_base->force_smu_not_present && dcn30_smu_get_smu_version(clk_mgr, &clk_mgr->smu_ver))
122 clk_mgr->smu_present = true;
123
124 if (!clk_mgr->smu_present)
125 return;
126
127 // do we fail if these fail? if so, how? do we not care to check?
128 dcn30_smu_check_driver_if_version(clk_mgr);
129 dcn30_smu_check_msg_header_version(clk_mgr);
130
131 /* DCFCLK */
132 dcn3_init_single_clock(clk_mgr, PPCLK_DCEFCLK,
133 &clk_mgr_base->bw_params->clk_table.entries[0].dcfclk_mhz,
134 &num_levels);
135 dcn30_smu_set_min_deep_sleep_dcef_clk(clk_mgr, 0);
136
137 /* DTBCLK */
138 dcn3_init_single_clock(clk_mgr, PPCLK_DTBCLK,
139 &clk_mgr_base->bw_params->clk_table.entries[0].dtbclk_mhz,
140 &num_levels);
141
142 /* SOCCLK */
143 dcn3_init_single_clock(clk_mgr, PPCLK_SOCCLK,
144 &clk_mgr_base->bw_params->clk_table.entries[0].socclk_mhz,
145 &num_levels);
146 // DPREFCLK ???
147
148 /* DISPCLK */
149 dcn3_init_single_clock(clk_mgr, PPCLK_DISPCLK,
150 &clk_mgr_base->bw_params->clk_table.entries[0].dispclk_mhz,
151 &num_levels);
152
153 /* DPPCLK */
154 dcn3_init_single_clock(clk_mgr, PPCLK_PIXCLK,
155 &clk_mgr_base->bw_params->clk_table.entries[0].dppclk_mhz,
156 &num_levels);
157
158 /* PHYCLK */
159 dcn3_init_single_clock(clk_mgr, PPCLK_PHYCLK,
160 &clk_mgr_base->bw_params->clk_table.entries[0].phyclk_mhz,
161 &num_levels);
162
163 /* Get UCLK, update bounding box */
164 clk_mgr_base->funcs->get_memclk_states_from_smu(clk_mgr_base);
165
166 /* WM range table */
167 DC_FP_START();
168 dcn3_build_wm_range_table(clk_mgr);
169 DC_FP_END();
170 }
171
dcn30_get_vco_frequency_from_reg(struct clk_mgr_internal * clk_mgr)172 static int dcn30_get_vco_frequency_from_reg(struct clk_mgr_internal *clk_mgr)
173 {
174 /* get FbMult value */
175 struct fixed31_32 pll_req;
176 /* get FbMult value */
177 uint32_t pll_req_reg = REG_READ(CLK0_CLK_PLL_REQ);
178
179 /* set up a fixed-point number
180 * this works because the int part is on the right edge of the register
181 * and the frac part is on the left edge
182 */
183 pll_req = dc_fixpt_from_int(pll_req_reg & clk_mgr->clk_mgr_mask->FbMult_int);
184 pll_req.value |= pll_req_reg & clk_mgr->clk_mgr_mask->FbMult_frac;
185
186 /* multiply by REFCLK period */
187 pll_req = dc_fixpt_mul_int(pll_req, clk_mgr->dfs_ref_freq_khz);
188
189 return dc_fixpt_floor(pll_req);
190 }
191
dcn3_update_clocks(struct clk_mgr * clk_mgr_base,struct dc_state * context,bool safe_to_lower)192 static void dcn3_update_clocks(struct clk_mgr *clk_mgr_base,
193 struct dc_state *context,
194 bool safe_to_lower)
195 {
196 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
197 struct dc_clocks *new_clocks = &context->bw_ctx.bw.dcn.clk;
198 struct dc *dc = clk_mgr_base->ctx->dc;
199 int display_count;
200 bool update_dppclk = false;
201 bool update_dispclk = false;
202 bool enter_display_off = false;
203 bool dpp_clock_lowered = false;
204 bool update_pstate_unsupported_clk = false;
205 struct dmcu *dmcu = clk_mgr_base->ctx->dc->res_pool->dmcu;
206 bool force_reset = false;
207 bool update_uclk = false;
208 bool p_state_change_support;
209 int total_plane_count;
210
211 if (dc->work_arounds.skip_clock_update || !clk_mgr->smu_present)
212 return;
213
214 if (clk_mgr_base->clks.dispclk_khz == 0 ||
215 (dc->debug.force_clock_mode & 0x1)) {
216 /* this is from resume or boot up, if forced_clock cfg option used, we bypass program dispclk and DPPCLK, but need set them for S3. */
217 force_reset = true;
218
219 dcn2_read_clocks_from_hw_dentist(clk_mgr_base);
220
221 /* force_clock_mode 0x1: force reset the clock even it is the same clock as long as it is in Passive level. */
222 }
223 display_count = clk_mgr_helper_get_active_display_cnt(dc, context);
224
225 if (display_count == 0)
226 enter_display_off = true;
227
228 if (enter_display_off == safe_to_lower)
229 dcn30_smu_set_num_of_displays(clk_mgr, display_count);
230
231 if (dc->debug.force_min_dcfclk_mhz > 0)
232 new_clocks->dcfclk_khz = (new_clocks->dcfclk_khz > (dc->debug.force_min_dcfclk_mhz * 1000)) ?
233 new_clocks->dcfclk_khz : (dc->debug.force_min_dcfclk_mhz * 1000);
234
235 if (should_set_clock(safe_to_lower, new_clocks->dcfclk_khz, clk_mgr_base->clks.dcfclk_khz)) {
236 clk_mgr_base->clks.dcfclk_khz = new_clocks->dcfclk_khz;
237 dcn30_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DCEFCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dcfclk_khz));
238 }
239
240 if (should_set_clock(safe_to_lower, new_clocks->dcfclk_deep_sleep_khz, clk_mgr_base->clks.dcfclk_deep_sleep_khz)) {
241 clk_mgr_base->clks.dcfclk_deep_sleep_khz = new_clocks->dcfclk_deep_sleep_khz;
242 dcn30_smu_set_min_deep_sleep_dcef_clk(clk_mgr, khz_to_mhz_ceil(clk_mgr_base->clks.dcfclk_deep_sleep_khz));
243 }
244
245 if (should_set_clock(safe_to_lower, new_clocks->socclk_khz, clk_mgr_base->clks.socclk_khz))
246 /* We don't actually care about socclk, don't notify SMU of hard min */
247 clk_mgr_base->clks.socclk_khz = new_clocks->socclk_khz;
248
249 clk_mgr_base->clks.prev_p_state_change_support = clk_mgr_base->clks.p_state_change_support;
250 total_plane_count = clk_mgr_helper_get_active_plane_cnt(dc, context);
251 p_state_change_support = new_clocks->p_state_change_support || (total_plane_count == 0);
252
253 // invalidate the current P-State forced min in certain dc_mode_softmax situations
254 if (dc->clk_mgr->dc_mode_softmax_enabled && safe_to_lower && !p_state_change_support) {
255 if ((new_clocks->dramclk_khz <= dc->clk_mgr->bw_params->dc_mode_softmax_memclk * 1000) !=
256 (clk_mgr_base->clks.dramclk_khz <= dc->clk_mgr->bw_params->dc_mode_softmax_memclk * 1000))
257 update_pstate_unsupported_clk = true;
258 }
259
260 if (should_update_pstate_support(safe_to_lower, p_state_change_support, clk_mgr_base->clks.p_state_change_support) ||
261 update_pstate_unsupported_clk) {
262 clk_mgr_base->clks.p_state_change_support = p_state_change_support;
263
264 /* to disable P-State switching, set UCLK min = max */
265 if (!clk_mgr_base->clks.p_state_change_support) {
266 if (dc->clk_mgr->dc_mode_softmax_enabled &&
267 new_clocks->dramclk_khz <= dc->clk_mgr->bw_params->dc_mode_softmax_memclk * 1000)
268 dcn30_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK,
269 dc->clk_mgr->bw_params->dc_mode_softmax_memclk);
270 else
271 dcn30_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK,
272 clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries - 1].memclk_mhz);
273 }
274 }
275
276 /* Always update saved value, even if new value not set due to P-State switching unsupported */
277 if (should_set_clock(safe_to_lower, new_clocks->dramclk_khz, clk_mgr_base->clks.dramclk_khz)) {
278 clk_mgr_base->clks.dramclk_khz = new_clocks->dramclk_khz;
279 update_uclk = true;
280 }
281
282 /* set UCLK to requested value if P-State switching is supported, or to re-enable P-State switching */
283 if (clk_mgr_base->clks.p_state_change_support &&
284 (update_uclk || !clk_mgr_base->clks.prev_p_state_change_support))
285 dcn30_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dramclk_khz));
286
287 if (should_set_clock(safe_to_lower, new_clocks->dppclk_khz, clk_mgr_base->clks.dppclk_khz)) {
288 if (clk_mgr_base->clks.dppclk_khz > new_clocks->dppclk_khz)
289 dpp_clock_lowered = true;
290
291 clk_mgr_base->clks.dppclk_khz = new_clocks->dppclk_khz;
292 dcn30_smu_set_hard_min_by_freq(clk_mgr, PPCLK_PIXCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dppclk_khz));
293 update_dppclk = true;
294 }
295
296 if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz)) {
297 clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz;
298 dcn30_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DISPCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dispclk_khz));
299 update_dispclk = true;
300 }
301
302 if (dc->config.forced_clocks == false || (force_reset && safe_to_lower)) {
303 if (dpp_clock_lowered) {
304 /* if clock is being lowered, increase DTO before lowering refclk */
305 dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
306 dcn20_update_clocks_update_dentist(clk_mgr, context);
307 } else {
308 /* if clock is being raised, increase refclk before lowering DTO */
309 if (update_dppclk || update_dispclk)
310 dcn20_update_clocks_update_dentist(clk_mgr, context);
311 /* There is a check inside dcn20_update_clocks_update_dpp_dto which ensures
312 * that we do not lower dto when it is not safe to lower. We do not need to
313 * compare the current and new dppclk before calling this function.*/
314 dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
315 }
316 }
317
318 if (update_dispclk && dmcu && dmcu->funcs->is_dmcu_initialized(dmcu))
319 /*update dmcu for wait_loop count*/
320 dmcu->funcs->set_psr_wait_loop(dmcu,
321 clk_mgr_base->clks.dispclk_khz / 1000 / 7);
322 }
323
324
dcn3_notify_wm_ranges(struct clk_mgr * clk_mgr_base)325 static void dcn3_notify_wm_ranges(struct clk_mgr *clk_mgr_base)
326 {
327 unsigned int i;
328 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
329 WatermarksExternal_t *table = (WatermarksExternal_t *) clk_mgr->wm_range_table;
330
331 if (!clk_mgr->smu_present)
332 return;
333
334 if (!table)
335 // should log failure
336 return;
337
338 memset(table, 0, sizeof(*table));
339
340 /* collect valid ranges, place in pmfw table */
341 for (i = 0; i < WM_SET_COUNT; i++)
342 if (clk_mgr->base.bw_params->wm_table.nv_entries[i].valid) {
343 table->Watermarks.WatermarkRow[WM_DCEFCLK][i].MinClock = clk_mgr->base.bw_params->wm_table.nv_entries[i].pmfw_breakdown.min_dcfclk;
344 table->Watermarks.WatermarkRow[WM_DCEFCLK][i].MaxClock = clk_mgr->base.bw_params->wm_table.nv_entries[i].pmfw_breakdown.max_dcfclk;
345 table->Watermarks.WatermarkRow[WM_DCEFCLK][i].MinUclk = clk_mgr->base.bw_params->wm_table.nv_entries[i].pmfw_breakdown.min_uclk;
346 table->Watermarks.WatermarkRow[WM_DCEFCLK][i].MaxUclk = clk_mgr->base.bw_params->wm_table.nv_entries[i].pmfw_breakdown.max_uclk;
347 table->Watermarks.WatermarkRow[WM_DCEFCLK][i].WmSetting = i;
348 table->Watermarks.WatermarkRow[WM_DCEFCLK][i].Flags = clk_mgr->base.bw_params->wm_table.nv_entries[i].pmfw_breakdown.wm_type;
349 }
350
351 dcn30_smu_set_dram_addr_high(clk_mgr, clk_mgr->wm_range_table_addr >> 32);
352 dcn30_smu_set_dram_addr_low(clk_mgr, clk_mgr->wm_range_table_addr & 0xFFFFFFFF);
353 dcn30_smu_transfer_wm_table_dram_2_smu(clk_mgr);
354 }
355
356 /* Set min memclk to minimum, either constrained by the current mode or DPM0 */
dcn3_set_hard_min_memclk(struct clk_mgr * clk_mgr_base,bool current_mode)357 static void dcn3_set_hard_min_memclk(struct clk_mgr *clk_mgr_base, bool current_mode)
358 {
359 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
360
361 if (!clk_mgr->smu_present)
362 return;
363
364 if (current_mode) {
365 if (clk_mgr_base->clks.p_state_change_support)
366 dcn30_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK,
367 khz_to_mhz_ceil(clk_mgr_base->clks.dramclk_khz));
368 else
369 dcn30_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK,
370 clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries - 1].memclk_mhz);
371 } else {
372 dcn30_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK,
373 clk_mgr_base->bw_params->clk_table.entries[0].memclk_mhz);
374 }
375 }
376
377 /* Set max memclk to highest DPM value */
dcn3_set_hard_max_memclk(struct clk_mgr * clk_mgr_base)378 static void dcn3_set_hard_max_memclk(struct clk_mgr *clk_mgr_base)
379 {
380 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
381
382 if (!clk_mgr->smu_present)
383 return;
384
385 dcn30_smu_set_hard_max_by_freq(clk_mgr, PPCLK_UCLK,
386 clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries - 1].memclk_mhz);
387 }
388
dcn3_set_max_memclk(struct clk_mgr * clk_mgr_base,unsigned int memclk_mhz)389 static void dcn3_set_max_memclk(struct clk_mgr *clk_mgr_base, unsigned int memclk_mhz)
390 {
391 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
392
393 if (!clk_mgr->smu_present)
394 return;
395
396 dcn30_smu_set_hard_max_by_freq(clk_mgr, PPCLK_UCLK, memclk_mhz);
397 }
dcn3_set_min_memclk(struct clk_mgr * clk_mgr_base,unsigned int memclk_mhz)398 static void dcn3_set_min_memclk(struct clk_mgr *clk_mgr_base, unsigned int memclk_mhz)
399 {
400 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
401
402 if (!clk_mgr->smu_present)
403 return;
404 dcn30_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK, memclk_mhz);
405 }
406
407 /* Get current memclk states, update bounding box */
dcn3_get_memclk_states_from_smu(struct clk_mgr * clk_mgr_base)408 static void dcn3_get_memclk_states_from_smu(struct clk_mgr *clk_mgr_base)
409 {
410 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
411 unsigned int num_levels;
412
413 if (!clk_mgr->smu_present)
414 return;
415
416 /* Refresh memclk states */
417 dcn3_init_single_clock(clk_mgr, PPCLK_UCLK,
418 &clk_mgr_base->bw_params->clk_table.entries[0].memclk_mhz,
419 &num_levels);
420 clk_mgr_base->bw_params->clk_table.num_entries = num_levels ? num_levels : 1;
421
422 clk_mgr_base->bw_params->dc_mode_softmax_memclk = dcn30_smu_get_dc_mode_max_dpm_freq(clk_mgr, PPCLK_UCLK);
423
424 /* Refresh bounding box */
425 DC_FP_START();
426 clk_mgr_base->ctx->dc->res_pool->funcs->update_bw_bounding_box(
427 clk_mgr->base.ctx->dc, clk_mgr_base->bw_params);
428 DC_FP_END();
429 }
430
dcn3_is_smu_present(struct clk_mgr * clk_mgr_base)431 static bool dcn3_is_smu_present(struct clk_mgr *clk_mgr_base)
432 {
433 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
434 return clk_mgr->smu_present;
435 }
436
dcn3_are_clock_states_equal(struct dc_clocks * a,struct dc_clocks * b)437 static bool dcn3_are_clock_states_equal(struct dc_clocks *a,
438 struct dc_clocks *b)
439 {
440 if (a->dispclk_khz != b->dispclk_khz)
441 return false;
442 else if (a->dppclk_khz != b->dppclk_khz)
443 return false;
444 else if (a->dcfclk_khz != b->dcfclk_khz)
445 return false;
446 else if (a->dcfclk_deep_sleep_khz != b->dcfclk_deep_sleep_khz)
447 return false;
448 else if (a->dramclk_khz != b->dramclk_khz)
449 return false;
450 else if (a->p_state_change_support != b->p_state_change_support)
451 return false;
452
453 return true;
454 }
455
dcn3_enable_pme_wa(struct clk_mgr * clk_mgr_base)456 static void dcn3_enable_pme_wa(struct clk_mgr *clk_mgr_base)
457 {
458 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
459
460 if (!clk_mgr->smu_present)
461 return;
462
463 dcn30_smu_set_pme_workaround(clk_mgr);
464 }
465
466 /* Notify clk_mgr of a change in link rate, update phyclk frequency if necessary */
dcn30_notify_link_rate_change(struct clk_mgr * clk_mgr_base,struct dc_link * link)467 static void dcn30_notify_link_rate_change(struct clk_mgr *clk_mgr_base, struct dc_link *link)
468 {
469 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
470 unsigned int i, max_phyclk_req = clk_mgr_base->bw_params->clk_table.entries[0].phyclk_mhz * 1000;
471
472 if (!clk_mgr->smu_present)
473 return;
474
475 /* TODO - DP2.0 HW: calculate link 128b/132 link rate in clock manager with new formula */
476
477 clk_mgr->cur_phyclk_req_table[link->link_index] = link->cur_link_settings.link_rate * LINK_RATE_REF_FREQ_IN_KHZ;
478
479 for (i = 0; i < MAX_PIPES * 2; i++) {
480 if (clk_mgr->cur_phyclk_req_table[i] > max_phyclk_req)
481 max_phyclk_req = clk_mgr->cur_phyclk_req_table[i];
482 }
483
484 if (max_phyclk_req != clk_mgr_base->clks.phyclk_khz) {
485 clk_mgr_base->clks.phyclk_khz = max_phyclk_req;
486 dcn30_smu_set_hard_min_by_freq(clk_mgr, PPCLK_PHYCLK, khz_to_mhz_ceil(clk_mgr_base->clks.phyclk_khz));
487 }
488 }
489
490 static struct clk_mgr_funcs dcn3_funcs = {
491 .get_dp_ref_clk_frequency = dce12_get_dp_ref_freq_khz,
492 .update_clocks = dcn3_update_clocks,
493 .init_clocks = dcn3_init_clocks,
494 .notify_wm_ranges = dcn3_notify_wm_ranges,
495 .set_hard_min_memclk = dcn3_set_hard_min_memclk,
496 .set_hard_max_memclk = dcn3_set_hard_max_memclk,
497 .set_max_memclk = dcn3_set_max_memclk,
498 .set_min_memclk = dcn3_set_min_memclk,
499 .get_memclk_states_from_smu = dcn3_get_memclk_states_from_smu,
500 .are_clock_states_equal = dcn3_are_clock_states_equal,
501 .enable_pme_wa = dcn3_enable_pme_wa,
502 .notify_link_rate_change = dcn30_notify_link_rate_change,
503 .is_smu_present = dcn3_is_smu_present
504 };
505
dcn3_init_clocks_fpga(struct clk_mgr * clk_mgr)506 static void dcn3_init_clocks_fpga(struct clk_mgr *clk_mgr)
507 {
508 dcn2_init_clocks(clk_mgr);
509
510 /* TODO: Implement the functions and remove the ifndef guard */
511 }
512
513 struct clk_mgr_funcs dcn3_fpga_funcs = {
514 .get_dp_ref_clk_frequency = dce12_get_dp_ref_freq_khz,
515 .update_clocks = dcn2_update_clocks_fpga,
516 .init_clocks = dcn3_init_clocks_fpga,
517 };
518
519 /*todo for dcn30 for clk register offset*/
dcn3_clk_mgr_construct(struct dc_context * ctx,struct clk_mgr_internal * clk_mgr,struct pp_smu_funcs * pp_smu,struct dccg * dccg)520 void dcn3_clk_mgr_construct(
521 struct dc_context *ctx,
522 struct clk_mgr_internal *clk_mgr,
523 struct pp_smu_funcs *pp_smu,
524 struct dccg *dccg)
525 {
526 clk_mgr->base.ctx = ctx;
527 clk_mgr->base.funcs = &dcn3_funcs;
528 clk_mgr->regs = &clk_mgr_regs;
529 clk_mgr->clk_mgr_shift = &clk_mgr_shift;
530 clk_mgr->clk_mgr_mask = &clk_mgr_mask;
531
532 clk_mgr->dccg = dccg;
533 clk_mgr->dfs_bypass_disp_clk = 0;
534
535 clk_mgr->dprefclk_ss_percentage = 0;
536 clk_mgr->dprefclk_ss_divider = 1000;
537 clk_mgr->ss_on_dprefclk = false;
538 clk_mgr->dfs_ref_freq_khz = 100000;
539
540 clk_mgr->base.dprefclk_khz = 730000; // 700 MHz planned if VCO is 3.85 GHz, will be retrieved
541
542 if (IS_FPGA_MAXIMUS_DC(ctx->dce_environment)) {
543 clk_mgr->base.funcs = &dcn3_fpga_funcs;
544 clk_mgr->base.dentist_vco_freq_khz = 3650000;
545
546 } else {
547 struct clk_state_registers_and_bypass s = { 0 };
548
549 /* integer part is now VCO frequency in kHz */
550 clk_mgr->base.dentist_vco_freq_khz = dcn30_get_vco_frequency_from_reg(clk_mgr);
551
552 /* in case we don't get a value from the register, use default */
553 if (clk_mgr->base.dentist_vco_freq_khz == 0)
554 clk_mgr->base.dentist_vco_freq_khz = 3650000;
555 /* Convert dprefclk units from MHz to KHz */
556 /* Value already divided by 10, some resolution lost */
557
558 /*TODO: uncomment assert once dcn3_dump_clk_registers is implemented */
559 //ASSERT(s.dprefclk != 0);
560 if (s.dprefclk != 0)
561 clk_mgr->base.dprefclk_khz = s.dprefclk * 1000;
562 }
563
564 clk_mgr->dfs_bypass_enabled = false;
565
566 clk_mgr->smu_present = false;
567
568 dce_clock_read_ss_info(clk_mgr);
569
570 clk_mgr->base.bw_params = kzalloc(sizeof(*clk_mgr->base.bw_params), GFP_KERNEL);
571
572 /* need physical address of table to give to PMFW */
573 clk_mgr->wm_range_table = dm_helpers_allocate_gpu_mem(clk_mgr->base.ctx,
574 DC_MEM_ALLOC_TYPE_GART, sizeof(WatermarksExternal_t),
575 &clk_mgr->wm_range_table_addr);
576 }
577
dcn3_clk_mgr_destroy(struct clk_mgr_internal * clk_mgr)578 void dcn3_clk_mgr_destroy(struct clk_mgr_internal *clk_mgr)
579 {
580 if (clk_mgr->base.bw_params)
581 kfree(clk_mgr->base.bw_params);
582
583 if (clk_mgr->wm_range_table)
584 dm_helpers_free_gpu_mem(clk_mgr->base.ctx, DC_MEM_ALLOC_TYPE_GART,
585 clk_mgr->wm_range_table);
586 }
587