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1/*
2 * Copyright 2011 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: Alex Deucher
23 */
24
25#include "radeon.h"
26#include "rv740d.h"
27#include "r600_dpm.h"
28#include "rv770.h"
29#include "rv770_dpm.h"
30#include "atom.h"
31
32u32 rv740_get_decoded_reference_divider(u32 encoded_ref)
33{
34 u32 ref = 0;
35
36 switch (encoded_ref) {
37 case 0:
38 ref = 1;
39 break;
40 case 16:
41 ref = 2;
42 break;
43 case 17:
44 ref = 3;
45 break;
46 case 18:
47 ref = 2;
48 break;
49 case 19:
50 ref = 3;
51 break;
52 case 20:
53 ref = 4;
54 break;
55 case 21:
56 ref = 5;
57 break;
58 default:
59 DRM_ERROR("Invalid encoded Reference Divider\n");
60 ref = 0;
61 break;
62 }
63
64 return ref;
65}
66
67struct dll_speed_setting {
68 u16 min;
69 u16 max;
70 u32 dll_speed;
71};
72
73static struct dll_speed_setting dll_speed_table[16] =
74{
75 { 270, 320, 0x0f },
76 { 240, 270, 0x0e },
77 { 200, 240, 0x0d },
78 { 180, 200, 0x0c },
79 { 160, 180, 0x0b },
80 { 140, 160, 0x0a },
81 { 120, 140, 0x09 },
82 { 110, 120, 0x08 },
83 { 95, 110, 0x07 },
84 { 85, 95, 0x06 },
85 { 78, 85, 0x05 },
86 { 70, 78, 0x04 },
87 { 65, 70, 0x03 },
88 { 60, 65, 0x02 },
89 { 42, 60, 0x01 },
90 { 00, 42, 0x00 }
91};
92
93u32 rv740_get_dll_speed(bool is_gddr5, u32 memory_clock)
94{
95 int i;
96 u32 factor;
97 u16 data_rate;
98
99 if (is_gddr5)
100 factor = 4;
101 else
102 factor = 2;
103
104 data_rate = (u16)(memory_clock * factor / 1000);
105
106 if (data_rate < dll_speed_table[0].max) {
107 for (i = 0; i < 16; i++) {
108 if (data_rate > dll_speed_table[i].min &&
109 data_rate <= dll_speed_table[i].max)
110 return dll_speed_table[i].dll_speed;
111 }
112 }
113
114 DRM_DEBUG_KMS("Target MCLK greater than largest MCLK in DLL speed table\n");
115
116 return 0x0f;
117}
118
119int rv740_populate_sclk_value(struct radeon_device *rdev, u32 engine_clock,
120 RV770_SMC_SCLK_VALUE *sclk)
121{
122 struct rv7xx_power_info *pi = rv770_get_pi(rdev);
123 struct atom_clock_dividers dividers;
124 u32 spll_func_cntl = pi->clk_regs.rv770.cg_spll_func_cntl;
125 u32 spll_func_cntl_2 = pi->clk_regs.rv770.cg_spll_func_cntl_2;
126 u32 spll_func_cntl_3 = pi->clk_regs.rv770.cg_spll_func_cntl_3;
127 u32 cg_spll_spread_spectrum = pi->clk_regs.rv770.cg_spll_spread_spectrum;
128 u32 cg_spll_spread_spectrum_2 = pi->clk_regs.rv770.cg_spll_spread_spectrum_2;
129 u64 tmp;
130 u32 reference_clock = rdev->clock.spll.reference_freq;
131 u32 reference_divider;
132 u32 fbdiv;
133 int ret;
134
135 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
136 engine_clock, false, ÷rs);
137 if (ret)
138 return ret;
139
140 reference_divider = 1 + dividers.ref_div;
141
142 tmp = (u64) engine_clock * reference_divider * dividers.post_div * 16384;
143 do_div(tmp, reference_clock);
144 fbdiv = (u32) tmp;
145
146 spll_func_cntl &= ~(SPLL_PDIV_A_MASK | SPLL_REF_DIV_MASK);
147 spll_func_cntl |= SPLL_REF_DIV(dividers.ref_div);
148 spll_func_cntl |= SPLL_PDIV_A(dividers.post_div);
149
150 spll_func_cntl_2 &= ~SCLK_MUX_SEL_MASK;
151 spll_func_cntl_2 |= SCLK_MUX_SEL(2);
152
153 spll_func_cntl_3 &= ~SPLL_FB_DIV_MASK;
154 spll_func_cntl_3 |= SPLL_FB_DIV(fbdiv);
155 spll_func_cntl_3 |= SPLL_DITHEN;
156
157 if (pi->sclk_ss) {
158 struct radeon_atom_ss ss;
159 u32 vco_freq = engine_clock * dividers.post_div;
160
161 if (radeon_atombios_get_asic_ss_info(rdev, &ss,
162 ASIC_INTERNAL_ENGINE_SS, vco_freq)) {
163 u32 clk_s = reference_clock * 5 / (reference_divider * ss.rate);
164 u32 clk_v = 4 * ss.percentage * fbdiv / (clk_s * 10000);
165
166 cg_spll_spread_spectrum &= ~CLK_S_MASK;
167 cg_spll_spread_spectrum |= CLK_S(clk_s);
168 cg_spll_spread_spectrum |= SSEN;
169
170 cg_spll_spread_spectrum_2 &= ~CLK_V_MASK;
171 cg_spll_spread_spectrum_2 |= CLK_V(clk_v);
172 }
173 }
174
175 sclk->sclk_value = cpu_to_be32(engine_clock);
176 sclk->vCG_SPLL_FUNC_CNTL = cpu_to_be32(spll_func_cntl);
177 sclk->vCG_SPLL_FUNC_CNTL_2 = cpu_to_be32(spll_func_cntl_2);
178 sclk->vCG_SPLL_FUNC_CNTL_3 = cpu_to_be32(spll_func_cntl_3);
179 sclk->vCG_SPLL_SPREAD_SPECTRUM = cpu_to_be32(cg_spll_spread_spectrum);
180 sclk->vCG_SPLL_SPREAD_SPECTRUM_2 = cpu_to_be32(cg_spll_spread_spectrum_2);
181
182 return 0;
183}
184
185int rv740_populate_mclk_value(struct radeon_device *rdev,
186 u32 engine_clock, u32 memory_clock,
187 RV7XX_SMC_MCLK_VALUE *mclk)
188{
189 struct rv7xx_power_info *pi = rv770_get_pi(rdev);
190 u32 mpll_ad_func_cntl = pi->clk_regs.rv770.mpll_ad_func_cntl;
191 u32 mpll_ad_func_cntl_2 = pi->clk_regs.rv770.mpll_ad_func_cntl_2;
192 u32 mpll_dq_func_cntl = pi->clk_regs.rv770.mpll_dq_func_cntl;
193 u32 mpll_dq_func_cntl_2 = pi->clk_regs.rv770.mpll_dq_func_cntl_2;
194 u32 mclk_pwrmgt_cntl = pi->clk_regs.rv770.mclk_pwrmgt_cntl;
195 u32 dll_cntl = pi->clk_regs.rv770.dll_cntl;
196 u32 mpll_ss1 = pi->clk_regs.rv770.mpll_ss1;
197 u32 mpll_ss2 = pi->clk_regs.rv770.mpll_ss2;
198 struct atom_clock_dividers dividers;
199 u32 ibias;
200 u32 dll_speed;
201 int ret;
202
203 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_MEMORY_PLL_PARAM,
204 memory_clock, false, ÷rs);
205 if (ret)
206 return ret;
207
208 ibias = rv770_map_clkf_to_ibias(rdev, dividers.whole_fb_div);
209
210 mpll_ad_func_cntl &= ~(CLKR_MASK |
211 YCLK_POST_DIV_MASK |
212 CLKF_MASK |
213 CLKFRAC_MASK |
214 IBIAS_MASK);
215 mpll_ad_func_cntl |= CLKR(dividers.ref_div);
216 mpll_ad_func_cntl |= YCLK_POST_DIV(dividers.post_div);
217 mpll_ad_func_cntl |= CLKF(dividers.whole_fb_div);
218 mpll_ad_func_cntl |= CLKFRAC(dividers.frac_fb_div);
219 mpll_ad_func_cntl |= IBIAS(ibias);
220
221 if (dividers.vco_mode)
222 mpll_ad_func_cntl_2 |= VCO_MODE;
223 else
224 mpll_ad_func_cntl_2 &= ~VCO_MODE;
225
226 if (pi->mem_gddr5) {
227 mpll_dq_func_cntl &= ~(CLKR_MASK |
228 YCLK_POST_DIV_MASK |
229 CLKF_MASK |
230 CLKFRAC_MASK |
231 IBIAS_MASK);
232 mpll_dq_func_cntl |= CLKR(dividers.ref_div);
233 mpll_dq_func_cntl |= YCLK_POST_DIV(dividers.post_div);
234 mpll_dq_func_cntl |= CLKF(dividers.whole_fb_div);
235 mpll_dq_func_cntl |= CLKFRAC(dividers.frac_fb_div);
236 mpll_dq_func_cntl |= IBIAS(ibias);
237
238 if (dividers.vco_mode)
239 mpll_dq_func_cntl_2 |= VCO_MODE;
240 else
241 mpll_dq_func_cntl_2 &= ~VCO_MODE;
242 }
243
244 if (pi->mclk_ss) {
245 struct radeon_atom_ss ss;
246 u32 vco_freq = memory_clock * dividers.post_div;
247
248 if (radeon_atombios_get_asic_ss_info(rdev, &ss,
249 ASIC_INTERNAL_MEMORY_SS, vco_freq)) {
250 u32 reference_clock = rdev->clock.mpll.reference_freq;
251 u32 decoded_ref = rv740_get_decoded_reference_divider(dividers.ref_div);
252 u32 clk_s = reference_clock * 5 / (decoded_ref * ss.rate);
253 u32 clk_v = 0x40000 * ss.percentage *
254 (dividers.whole_fb_div + (dividers.frac_fb_div / 8)) / (clk_s * 10000);
255
256 mpll_ss1 &= ~CLKV_MASK;
257 mpll_ss1 |= CLKV(clk_v);
258
259 mpll_ss2 &= ~CLKS_MASK;
260 mpll_ss2 |= CLKS(clk_s);
261 }
262 }
263
264 dll_speed = rv740_get_dll_speed(pi->mem_gddr5,
265 memory_clock);
266
267 mclk_pwrmgt_cntl &= ~DLL_SPEED_MASK;
268 mclk_pwrmgt_cntl |= DLL_SPEED(dll_speed);
269
270 mclk->mclk770.mclk_value = cpu_to_be32(memory_clock);
271 mclk->mclk770.vMPLL_AD_FUNC_CNTL = cpu_to_be32(mpll_ad_func_cntl);
272 mclk->mclk770.vMPLL_AD_FUNC_CNTL_2 = cpu_to_be32(mpll_ad_func_cntl_2);
273 mclk->mclk770.vMPLL_DQ_FUNC_CNTL = cpu_to_be32(mpll_dq_func_cntl);
274 mclk->mclk770.vMPLL_DQ_FUNC_CNTL_2 = cpu_to_be32(mpll_dq_func_cntl_2);
275 mclk->mclk770.vMCLK_PWRMGT_CNTL = cpu_to_be32(mclk_pwrmgt_cntl);
276 mclk->mclk770.vDLL_CNTL = cpu_to_be32(dll_cntl);
277 mclk->mclk770.vMPLL_SS = cpu_to_be32(mpll_ss1);
278 mclk->mclk770.vMPLL_SS2 = cpu_to_be32(mpll_ss2);
279
280 return 0;
281}
282
283void rv740_read_clock_registers(struct radeon_device *rdev)
284{
285 struct rv7xx_power_info *pi = rv770_get_pi(rdev);
286
287 pi->clk_regs.rv770.cg_spll_func_cntl =
288 RREG32(CG_SPLL_FUNC_CNTL);
289 pi->clk_regs.rv770.cg_spll_func_cntl_2 =
290 RREG32(CG_SPLL_FUNC_CNTL_2);
291 pi->clk_regs.rv770.cg_spll_func_cntl_3 =
292 RREG32(CG_SPLL_FUNC_CNTL_3);
293 pi->clk_regs.rv770.cg_spll_spread_spectrum =
294 RREG32(CG_SPLL_SPREAD_SPECTRUM);
295 pi->clk_regs.rv770.cg_spll_spread_spectrum_2 =
296 RREG32(CG_SPLL_SPREAD_SPECTRUM_2);
297
298 pi->clk_regs.rv770.mpll_ad_func_cntl =
299 RREG32(MPLL_AD_FUNC_CNTL);
300 pi->clk_regs.rv770.mpll_ad_func_cntl_2 =
301 RREG32(MPLL_AD_FUNC_CNTL_2);
302 pi->clk_regs.rv770.mpll_dq_func_cntl =
303 RREG32(MPLL_DQ_FUNC_CNTL);
304 pi->clk_regs.rv770.mpll_dq_func_cntl_2 =
305 RREG32(MPLL_DQ_FUNC_CNTL_2);
306 pi->clk_regs.rv770.mclk_pwrmgt_cntl =
307 RREG32(MCLK_PWRMGT_CNTL);
308 pi->clk_regs.rv770.dll_cntl = RREG32(DLL_CNTL);
309 pi->clk_regs.rv770.mpll_ss1 = RREG32(MPLL_SS1);
310 pi->clk_regs.rv770.mpll_ss2 = RREG32(MPLL_SS2);
311}
312
313int rv740_populate_smc_acpi_state(struct radeon_device *rdev,
314 RV770_SMC_STATETABLE *table)
315{
316 struct rv7xx_power_info *pi = rv770_get_pi(rdev);
317 u32 mpll_ad_func_cntl = pi->clk_regs.rv770.mpll_ad_func_cntl;
318 u32 mpll_ad_func_cntl_2 = pi->clk_regs.rv770.mpll_ad_func_cntl_2;
319 u32 mpll_dq_func_cntl = pi->clk_regs.rv770.mpll_dq_func_cntl;
320 u32 mpll_dq_func_cntl_2 = pi->clk_regs.rv770.mpll_dq_func_cntl_2;
321 u32 spll_func_cntl = pi->clk_regs.rv770.cg_spll_func_cntl;
322 u32 spll_func_cntl_2 = pi->clk_regs.rv770.cg_spll_func_cntl_2;
323 u32 spll_func_cntl_3 = pi->clk_regs.rv770.cg_spll_func_cntl_3;
324 u32 mclk_pwrmgt_cntl = pi->clk_regs.rv770.mclk_pwrmgt_cntl;
325 u32 dll_cntl = pi->clk_regs.rv770.dll_cntl;
326
327 table->ACPIState = table->initialState;
328
329 table->ACPIState.flags &= ~PPSMC_SWSTATE_FLAG_DC;
330
331 if (pi->acpi_vddc) {
332 rv770_populate_vddc_value(rdev, pi->acpi_vddc,
333 &table->ACPIState.levels[0].vddc);
334 table->ACPIState.levels[0].gen2PCIE =
335 pi->pcie_gen2 ?
336 pi->acpi_pcie_gen2 : 0;
337 table->ACPIState.levels[0].gen2XSP =
338 pi->acpi_pcie_gen2;
339 } else {
340 rv770_populate_vddc_value(rdev, pi->min_vddc_in_table,
341 &table->ACPIState.levels[0].vddc);
342 table->ACPIState.levels[0].gen2PCIE = 0;
343 }
344
345 mpll_ad_func_cntl_2 |= BIAS_GEN_PDNB | RESET_EN;
346
347 mpll_dq_func_cntl_2 |= BYPASS | BIAS_GEN_PDNB | RESET_EN;
348
349 mclk_pwrmgt_cntl |= (MRDCKA0_RESET |
350 MRDCKA1_RESET |
351 MRDCKB0_RESET |
352 MRDCKB1_RESET |
353 MRDCKC0_RESET |
354 MRDCKC1_RESET |
355 MRDCKD0_RESET |
356 MRDCKD1_RESET);
357
358 dll_cntl |= (MRDCKA0_BYPASS |
359 MRDCKA1_BYPASS |
360 MRDCKB0_BYPASS |
361 MRDCKB1_BYPASS |
362 MRDCKC0_BYPASS |
363 MRDCKC1_BYPASS |
364 MRDCKD0_BYPASS |
365 MRDCKD1_BYPASS);
366
367 spll_func_cntl |= SPLL_RESET | SPLL_SLEEP | SPLL_BYPASS_EN;
368
369 spll_func_cntl_2 &= ~SCLK_MUX_SEL_MASK;
370 spll_func_cntl_2 |= SCLK_MUX_SEL(4);
371
372 table->ACPIState.levels[0].mclk.mclk770.vMPLL_AD_FUNC_CNTL = cpu_to_be32(mpll_ad_func_cntl);
373 table->ACPIState.levels[0].mclk.mclk770.vMPLL_AD_FUNC_CNTL_2 = cpu_to_be32(mpll_ad_func_cntl_2);
374 table->ACPIState.levels[0].mclk.mclk770.vMPLL_DQ_FUNC_CNTL = cpu_to_be32(mpll_dq_func_cntl);
375 table->ACPIState.levels[0].mclk.mclk770.vMPLL_DQ_FUNC_CNTL_2 = cpu_to_be32(mpll_dq_func_cntl_2);
376 table->ACPIState.levels[0].mclk.mclk770.vMCLK_PWRMGT_CNTL = cpu_to_be32(mclk_pwrmgt_cntl);
377 table->ACPIState.levels[0].mclk.mclk770.vDLL_CNTL = cpu_to_be32(dll_cntl);
378
379 table->ACPIState.levels[0].mclk.mclk770.mclk_value = 0;
380
381 table->ACPIState.levels[0].sclk.vCG_SPLL_FUNC_CNTL = cpu_to_be32(spll_func_cntl);
382 table->ACPIState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_2 = cpu_to_be32(spll_func_cntl_2);
383 table->ACPIState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_3 = cpu_to_be32(spll_func_cntl_3);
384
385 table->ACPIState.levels[0].sclk.sclk_value = 0;
386
387 table->ACPIState.levels[1] = table->ACPIState.levels[0];
388 table->ACPIState.levels[2] = table->ACPIState.levels[0];
389
390 rv770_populate_mvdd_value(rdev, 0, &table->ACPIState.levels[0].mvdd);
391
392 return 0;
393}
394
395void rv740_enable_mclk_spread_spectrum(struct radeon_device *rdev,
396 bool enable)
397{
398 if (enable)
399 WREG32_P(MPLL_CNTL_MODE, SS_SSEN, ~SS_SSEN);
400 else
401 WREG32_P(MPLL_CNTL_MODE, 0, ~SS_SSEN);
402}
403
404u8 rv740_get_mclk_frequency_ratio(u32 memory_clock)
405{
406 u8 mc_para_index;
407
408 if ((memory_clock < 10000) || (memory_clock > 47500))
409 mc_para_index = 0x00;
410 else
411 mc_para_index = (u8)((memory_clock - 10000) / 2500);
412
413 return mc_para_index;
414}