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85208be0 ED |
1 | /* |
2 | * Copyright © 2012 Intel Corporation | |
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 (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Eugeni Dodonov <eugeni.dodonov@intel.com> | |
25 | * | |
26 | */ | |
27 | ||
2b4e57bd | 28 | #include <linux/cpufreq.h> |
85208be0 ED |
29 | #include "i915_drv.h" |
30 | #include "intel_drv.h" | |
eb48eb00 DV |
31 | #include "../../../platform/x86/intel_ips.h" |
32 | #include <linux/module.h> | |
85208be0 | 33 | |
dc39fff7 BW |
34 | /** |
35 | * RC6 is a special power stage which allows the GPU to enter an very | |
36 | * low-voltage mode when idle, using down to 0V while at this stage. This | |
37 | * stage is entered automatically when the GPU is idle when RC6 support is | |
38 | * enabled, and as soon as new workload arises GPU wakes up automatically as well. | |
39 | * | |
40 | * There are different RC6 modes available in Intel GPU, which differentiate | |
41 | * among each other with the latency required to enter and leave RC6 and | |
42 | * voltage consumed by the GPU in different states. | |
43 | * | |
44 | * The combination of the following flags define which states GPU is allowed | |
45 | * to enter, while RC6 is the normal RC6 state, RC6p is the deep RC6, and | |
46 | * RC6pp is deepest RC6. Their support by hardware varies according to the | |
47 | * GPU, BIOS, chipset and platform. RC6 is usually the safest one and the one | |
48 | * which brings the most power savings; deeper states save more power, but | |
49 | * require higher latency to switch to and wake up. | |
50 | */ | |
51 | #define INTEL_RC6_ENABLE (1<<0) | |
52 | #define INTEL_RC6p_ENABLE (1<<1) | |
53 | #define INTEL_RC6pp_ENABLE (1<<2) | |
54 | ||
da2078cd DL |
55 | static void gen9_init_clock_gating(struct drm_device *dev) |
56 | { | |
acd5c346 DL |
57 | struct drm_i915_private *dev_priv = dev->dev_private; |
58 | ||
77719d28 DL |
59 | /* WaEnableLbsSlaRetryTimerDecrement:skl */ |
60 | I915_WRITE(BDW_SCRATCH1, I915_READ(BDW_SCRATCH1) | | |
61 | GEN9_LBS_SLA_RETRY_TIMER_DECREMENT_ENABLE); | |
62 | } | |
91e41d16 | 63 | |
45db2194 | 64 | static void skl_init_clock_gating(struct drm_device *dev) |
da2078cd | 65 | { |
acd5c346 | 66 | struct drm_i915_private *dev_priv = dev->dev_private; |
3ca5da43 | 67 | |
77719d28 DL |
68 | gen9_init_clock_gating(dev); |
69 | ||
3dcd020a HN |
70 | if (INTEL_REVID(dev) == SKL_REVID_A0) { |
71 | /* | |
72 | * WaDisableSDEUnitClockGating:skl | |
9253c2e5 | 73 | * WaSetGAPSunitClckGateDisable:skl |
3dcd020a HN |
74 | */ |
75 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
9253c2e5 | 76 | GEN8_GAPSUNIT_CLOCK_GATE_DISABLE | |
3dcd020a HN |
77 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); |
78 | } | |
8bc0ccf6 | 79 | |
2caa3b26 | 80 | if (INTEL_REVID(dev) <= SKL_REVID_D0) { |
81e231af DL |
81 | /* WaDisableHDCInvalidation:skl */ |
82 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | | |
83 | BDW_DISABLE_HDC_INVALIDATION); | |
84 | ||
2caa3b26 DL |
85 | /* WaDisableChickenBitTSGBarrierAckForFFSliceCS:skl */ |
86 | I915_WRITE(FF_SLICE_CS_CHICKEN2, | |
87 | I915_READ(FF_SLICE_CS_CHICKEN2) | | |
88 | GEN9_TSG_BARRIER_ACK_DISABLE); | |
89 | } | |
81e231af | 90 | |
8bc0ccf6 DL |
91 | if (INTEL_REVID(dev) <= SKL_REVID_E0) |
92 | /* WaDisableLSQCROPERFforOCL:skl */ | |
93 | I915_WRITE(GEN8_L3SQCREG4, I915_READ(GEN8_L3SQCREG4) | | |
94 | GEN8_LQSC_RO_PERF_DIS); | |
da2078cd DL |
95 | } |
96 | ||
c921aba8 DV |
97 | static void i915_pineview_get_mem_freq(struct drm_device *dev) |
98 | { | |
50227e1c | 99 | struct drm_i915_private *dev_priv = dev->dev_private; |
c921aba8 DV |
100 | u32 tmp; |
101 | ||
102 | tmp = I915_READ(CLKCFG); | |
103 | ||
104 | switch (tmp & CLKCFG_FSB_MASK) { | |
105 | case CLKCFG_FSB_533: | |
106 | dev_priv->fsb_freq = 533; /* 133*4 */ | |
107 | break; | |
108 | case CLKCFG_FSB_800: | |
109 | dev_priv->fsb_freq = 800; /* 200*4 */ | |
110 | break; | |
111 | case CLKCFG_FSB_667: | |
112 | dev_priv->fsb_freq = 667; /* 167*4 */ | |
113 | break; | |
114 | case CLKCFG_FSB_400: | |
115 | dev_priv->fsb_freq = 400; /* 100*4 */ | |
116 | break; | |
117 | } | |
118 | ||
119 | switch (tmp & CLKCFG_MEM_MASK) { | |
120 | case CLKCFG_MEM_533: | |
121 | dev_priv->mem_freq = 533; | |
122 | break; | |
123 | case CLKCFG_MEM_667: | |
124 | dev_priv->mem_freq = 667; | |
125 | break; | |
126 | case CLKCFG_MEM_800: | |
127 | dev_priv->mem_freq = 800; | |
128 | break; | |
129 | } | |
130 | ||
131 | /* detect pineview DDR3 setting */ | |
132 | tmp = I915_READ(CSHRDDR3CTL); | |
133 | dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0; | |
134 | } | |
135 | ||
136 | static void i915_ironlake_get_mem_freq(struct drm_device *dev) | |
137 | { | |
50227e1c | 138 | struct drm_i915_private *dev_priv = dev->dev_private; |
c921aba8 DV |
139 | u16 ddrpll, csipll; |
140 | ||
141 | ddrpll = I915_READ16(DDRMPLL1); | |
142 | csipll = I915_READ16(CSIPLL0); | |
143 | ||
144 | switch (ddrpll & 0xff) { | |
145 | case 0xc: | |
146 | dev_priv->mem_freq = 800; | |
147 | break; | |
148 | case 0x10: | |
149 | dev_priv->mem_freq = 1066; | |
150 | break; | |
151 | case 0x14: | |
152 | dev_priv->mem_freq = 1333; | |
153 | break; | |
154 | case 0x18: | |
155 | dev_priv->mem_freq = 1600; | |
156 | break; | |
157 | default: | |
158 | DRM_DEBUG_DRIVER("unknown memory frequency 0x%02x\n", | |
159 | ddrpll & 0xff); | |
160 | dev_priv->mem_freq = 0; | |
161 | break; | |
162 | } | |
163 | ||
20e4d407 | 164 | dev_priv->ips.r_t = dev_priv->mem_freq; |
c921aba8 DV |
165 | |
166 | switch (csipll & 0x3ff) { | |
167 | case 0x00c: | |
168 | dev_priv->fsb_freq = 3200; | |
169 | break; | |
170 | case 0x00e: | |
171 | dev_priv->fsb_freq = 3733; | |
172 | break; | |
173 | case 0x010: | |
174 | dev_priv->fsb_freq = 4266; | |
175 | break; | |
176 | case 0x012: | |
177 | dev_priv->fsb_freq = 4800; | |
178 | break; | |
179 | case 0x014: | |
180 | dev_priv->fsb_freq = 5333; | |
181 | break; | |
182 | case 0x016: | |
183 | dev_priv->fsb_freq = 5866; | |
184 | break; | |
185 | case 0x018: | |
186 | dev_priv->fsb_freq = 6400; | |
187 | break; | |
188 | default: | |
189 | DRM_DEBUG_DRIVER("unknown fsb frequency 0x%04x\n", | |
190 | csipll & 0x3ff); | |
191 | dev_priv->fsb_freq = 0; | |
192 | break; | |
193 | } | |
194 | ||
195 | if (dev_priv->fsb_freq == 3200) { | |
20e4d407 | 196 | dev_priv->ips.c_m = 0; |
c921aba8 | 197 | } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) { |
20e4d407 | 198 | dev_priv->ips.c_m = 1; |
c921aba8 | 199 | } else { |
20e4d407 | 200 | dev_priv->ips.c_m = 2; |
c921aba8 DV |
201 | } |
202 | } | |
203 | ||
b445e3b0 ED |
204 | static const struct cxsr_latency cxsr_latency_table[] = { |
205 | {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */ | |
206 | {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */ | |
207 | {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */ | |
208 | {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */ | |
209 | {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */ | |
210 | ||
211 | {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */ | |
212 | {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */ | |
213 | {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */ | |
214 | {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */ | |
215 | {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */ | |
216 | ||
217 | {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */ | |
218 | {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */ | |
219 | {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */ | |
220 | {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */ | |
221 | {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */ | |
222 | ||
223 | {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */ | |
224 | {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */ | |
225 | {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */ | |
226 | {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */ | |
227 | {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */ | |
228 | ||
229 | {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */ | |
230 | {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */ | |
231 | {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */ | |
232 | {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */ | |
233 | {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */ | |
234 | ||
235 | {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */ | |
236 | {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */ | |
237 | {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */ | |
238 | {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */ | |
239 | {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */ | |
240 | }; | |
241 | ||
63c62275 | 242 | static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, |
b445e3b0 ED |
243 | int is_ddr3, |
244 | int fsb, | |
245 | int mem) | |
246 | { | |
247 | const struct cxsr_latency *latency; | |
248 | int i; | |
249 | ||
250 | if (fsb == 0 || mem == 0) | |
251 | return NULL; | |
252 | ||
253 | for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) { | |
254 | latency = &cxsr_latency_table[i]; | |
255 | if (is_desktop == latency->is_desktop && | |
256 | is_ddr3 == latency->is_ddr3 && | |
257 | fsb == latency->fsb_freq && mem == latency->mem_freq) | |
258 | return latency; | |
259 | } | |
260 | ||
261 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
262 | ||
263 | return NULL; | |
264 | } | |
265 | ||
fc1ac8de VS |
266 | static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable) |
267 | { | |
268 | u32 val; | |
269 | ||
270 | mutex_lock(&dev_priv->rps.hw_lock); | |
271 | ||
272 | val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); | |
273 | if (enable) | |
274 | val &= ~FORCE_DDR_HIGH_FREQ; | |
275 | else | |
276 | val |= FORCE_DDR_HIGH_FREQ; | |
277 | val &= ~FORCE_DDR_LOW_FREQ; | |
278 | val |= FORCE_DDR_FREQ_REQ_ACK; | |
279 | vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val); | |
280 | ||
281 | if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) & | |
282 | FORCE_DDR_FREQ_REQ_ACK) == 0, 3)) | |
283 | DRM_ERROR("timed out waiting for Punit DDR DVFS request\n"); | |
284 | ||
285 | mutex_unlock(&dev_priv->rps.hw_lock); | |
286 | } | |
287 | ||
cfb41411 VS |
288 | static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable) |
289 | { | |
290 | u32 val; | |
291 | ||
292 | mutex_lock(&dev_priv->rps.hw_lock); | |
293 | ||
294 | val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ); | |
295 | if (enable) | |
296 | val |= DSP_MAXFIFO_PM5_ENABLE; | |
297 | else | |
298 | val &= ~DSP_MAXFIFO_PM5_ENABLE; | |
299 | vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val); | |
300 | ||
301 | mutex_unlock(&dev_priv->rps.hw_lock); | |
302 | } | |
303 | ||
f4998963 VS |
304 | #define FW_WM(value, plane) \ |
305 | (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK) | |
306 | ||
5209b1f4 | 307 | void intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable) |
b445e3b0 | 308 | { |
5209b1f4 ID |
309 | struct drm_device *dev = dev_priv->dev; |
310 | u32 val; | |
b445e3b0 | 311 | |
5209b1f4 ID |
312 | if (IS_VALLEYVIEW(dev)) { |
313 | I915_WRITE(FW_BLC_SELF_VLV, enable ? FW_CSPWRDWNEN : 0); | |
cfb41411 VS |
314 | if (IS_CHERRYVIEW(dev)) |
315 | chv_set_memory_pm5(dev_priv, enable); | |
5209b1f4 ID |
316 | } else if (IS_G4X(dev) || IS_CRESTLINE(dev)) { |
317 | I915_WRITE(FW_BLC_SELF, enable ? FW_BLC_SELF_EN : 0); | |
318 | } else if (IS_PINEVIEW(dev)) { | |
319 | val = I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN; | |
320 | val |= enable ? PINEVIEW_SELF_REFRESH_EN : 0; | |
321 | I915_WRITE(DSPFW3, val); | |
322 | } else if (IS_I945G(dev) || IS_I945GM(dev)) { | |
323 | val = enable ? _MASKED_BIT_ENABLE(FW_BLC_SELF_EN) : | |
324 | _MASKED_BIT_DISABLE(FW_BLC_SELF_EN); | |
325 | I915_WRITE(FW_BLC_SELF, val); | |
326 | } else if (IS_I915GM(dev)) { | |
327 | val = enable ? _MASKED_BIT_ENABLE(INSTPM_SELF_EN) : | |
328 | _MASKED_BIT_DISABLE(INSTPM_SELF_EN); | |
329 | I915_WRITE(INSTPM, val); | |
330 | } else { | |
331 | return; | |
332 | } | |
b445e3b0 | 333 | |
5209b1f4 ID |
334 | DRM_DEBUG_KMS("memory self-refresh is %s\n", |
335 | enable ? "enabled" : "disabled"); | |
b445e3b0 ED |
336 | } |
337 | ||
fc1ac8de | 338 | |
b445e3b0 ED |
339 | /* |
340 | * Latency for FIFO fetches is dependent on several factors: | |
341 | * - memory configuration (speed, channels) | |
342 | * - chipset | |
343 | * - current MCH state | |
344 | * It can be fairly high in some situations, so here we assume a fairly | |
345 | * pessimal value. It's a tradeoff between extra memory fetches (if we | |
346 | * set this value too high, the FIFO will fetch frequently to stay full) | |
347 | * and power consumption (set it too low to save power and we might see | |
348 | * FIFO underruns and display "flicker"). | |
349 | * | |
350 | * A value of 5us seems to be a good balance; safe for very low end | |
351 | * platforms but not overly aggressive on lower latency configs. | |
352 | */ | |
5aef6003 | 353 | static const int pessimal_latency_ns = 5000; |
b445e3b0 | 354 | |
b5004720 VS |
355 | #define VLV_FIFO_START(dsparb, dsparb2, lo_shift, hi_shift) \ |
356 | ((((dsparb) >> (lo_shift)) & 0xff) | ((((dsparb2) >> (hi_shift)) & 0x1) << 8)) | |
357 | ||
358 | static int vlv_get_fifo_size(struct drm_device *dev, | |
359 | enum pipe pipe, int plane) | |
360 | { | |
361 | struct drm_i915_private *dev_priv = dev->dev_private; | |
362 | int sprite0_start, sprite1_start, size; | |
363 | ||
364 | switch (pipe) { | |
365 | uint32_t dsparb, dsparb2, dsparb3; | |
366 | case PIPE_A: | |
367 | dsparb = I915_READ(DSPARB); | |
368 | dsparb2 = I915_READ(DSPARB2); | |
369 | sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 0, 0); | |
370 | sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 8, 4); | |
371 | break; | |
372 | case PIPE_B: | |
373 | dsparb = I915_READ(DSPARB); | |
374 | dsparb2 = I915_READ(DSPARB2); | |
375 | sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 16, 8); | |
376 | sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 24, 12); | |
377 | break; | |
378 | case PIPE_C: | |
379 | dsparb2 = I915_READ(DSPARB2); | |
380 | dsparb3 = I915_READ(DSPARB3); | |
381 | sprite0_start = VLV_FIFO_START(dsparb3, dsparb2, 0, 16); | |
382 | sprite1_start = VLV_FIFO_START(dsparb3, dsparb2, 8, 20); | |
383 | break; | |
384 | default: | |
385 | return 0; | |
386 | } | |
387 | ||
388 | switch (plane) { | |
389 | case 0: | |
390 | size = sprite0_start; | |
391 | break; | |
392 | case 1: | |
393 | size = sprite1_start - sprite0_start; | |
394 | break; | |
395 | case 2: | |
396 | size = 512 - 1 - sprite1_start; | |
397 | break; | |
398 | default: | |
399 | return 0; | |
400 | } | |
401 | ||
402 | DRM_DEBUG_KMS("Pipe %c %s %c FIFO size: %d\n", | |
403 | pipe_name(pipe), plane == 0 ? "primary" : "sprite", | |
404 | plane == 0 ? plane_name(pipe) : sprite_name(pipe, plane - 1), | |
405 | size); | |
406 | ||
407 | return size; | |
408 | } | |
409 | ||
1fa61106 | 410 | static int i9xx_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
411 | { |
412 | struct drm_i915_private *dev_priv = dev->dev_private; | |
413 | uint32_t dsparb = I915_READ(DSPARB); | |
414 | int size; | |
415 | ||
416 | size = dsparb & 0x7f; | |
417 | if (plane) | |
418 | size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size; | |
419 | ||
420 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
421 | plane ? "B" : "A", size); | |
422 | ||
423 | return size; | |
424 | } | |
425 | ||
feb56b93 | 426 | static int i830_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
427 | { |
428 | struct drm_i915_private *dev_priv = dev->dev_private; | |
429 | uint32_t dsparb = I915_READ(DSPARB); | |
430 | int size; | |
431 | ||
432 | size = dsparb & 0x1ff; | |
433 | if (plane) | |
434 | size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size; | |
435 | size >>= 1; /* Convert to cachelines */ | |
436 | ||
437 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
438 | plane ? "B" : "A", size); | |
439 | ||
440 | return size; | |
441 | } | |
442 | ||
1fa61106 | 443 | static int i845_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
444 | { |
445 | struct drm_i915_private *dev_priv = dev->dev_private; | |
446 | uint32_t dsparb = I915_READ(DSPARB); | |
447 | int size; | |
448 | ||
449 | size = dsparb & 0x7f; | |
450 | size >>= 2; /* Convert to cachelines */ | |
451 | ||
452 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
453 | plane ? "B" : "A", | |
454 | size); | |
455 | ||
456 | return size; | |
457 | } | |
458 | ||
b445e3b0 ED |
459 | /* Pineview has different values for various configs */ |
460 | static const struct intel_watermark_params pineview_display_wm = { | |
e0f0273e VS |
461 | .fifo_size = PINEVIEW_DISPLAY_FIFO, |
462 | .max_wm = PINEVIEW_MAX_WM, | |
463 | .default_wm = PINEVIEW_DFT_WM, | |
464 | .guard_size = PINEVIEW_GUARD_WM, | |
465 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
466 | }; |
467 | static const struct intel_watermark_params pineview_display_hplloff_wm = { | |
e0f0273e VS |
468 | .fifo_size = PINEVIEW_DISPLAY_FIFO, |
469 | .max_wm = PINEVIEW_MAX_WM, | |
470 | .default_wm = PINEVIEW_DFT_HPLLOFF_WM, | |
471 | .guard_size = PINEVIEW_GUARD_WM, | |
472 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
473 | }; |
474 | static const struct intel_watermark_params pineview_cursor_wm = { | |
e0f0273e VS |
475 | .fifo_size = PINEVIEW_CURSOR_FIFO, |
476 | .max_wm = PINEVIEW_CURSOR_MAX_WM, | |
477 | .default_wm = PINEVIEW_CURSOR_DFT_WM, | |
478 | .guard_size = PINEVIEW_CURSOR_GUARD_WM, | |
479 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
480 | }; |
481 | static const struct intel_watermark_params pineview_cursor_hplloff_wm = { | |
e0f0273e VS |
482 | .fifo_size = PINEVIEW_CURSOR_FIFO, |
483 | .max_wm = PINEVIEW_CURSOR_MAX_WM, | |
484 | .default_wm = PINEVIEW_CURSOR_DFT_WM, | |
485 | .guard_size = PINEVIEW_CURSOR_GUARD_WM, | |
486 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
487 | }; |
488 | static const struct intel_watermark_params g4x_wm_info = { | |
e0f0273e VS |
489 | .fifo_size = G4X_FIFO_SIZE, |
490 | .max_wm = G4X_MAX_WM, | |
491 | .default_wm = G4X_MAX_WM, | |
492 | .guard_size = 2, | |
493 | .cacheline_size = G4X_FIFO_LINE_SIZE, | |
b445e3b0 ED |
494 | }; |
495 | static const struct intel_watermark_params g4x_cursor_wm_info = { | |
e0f0273e VS |
496 | .fifo_size = I965_CURSOR_FIFO, |
497 | .max_wm = I965_CURSOR_MAX_WM, | |
498 | .default_wm = I965_CURSOR_DFT_WM, | |
499 | .guard_size = 2, | |
500 | .cacheline_size = G4X_FIFO_LINE_SIZE, | |
b445e3b0 ED |
501 | }; |
502 | static const struct intel_watermark_params valleyview_wm_info = { | |
e0f0273e VS |
503 | .fifo_size = VALLEYVIEW_FIFO_SIZE, |
504 | .max_wm = VALLEYVIEW_MAX_WM, | |
505 | .default_wm = VALLEYVIEW_MAX_WM, | |
506 | .guard_size = 2, | |
507 | .cacheline_size = G4X_FIFO_LINE_SIZE, | |
b445e3b0 ED |
508 | }; |
509 | static const struct intel_watermark_params valleyview_cursor_wm_info = { | |
e0f0273e VS |
510 | .fifo_size = I965_CURSOR_FIFO, |
511 | .max_wm = VALLEYVIEW_CURSOR_MAX_WM, | |
512 | .default_wm = I965_CURSOR_DFT_WM, | |
513 | .guard_size = 2, | |
514 | .cacheline_size = G4X_FIFO_LINE_SIZE, | |
b445e3b0 ED |
515 | }; |
516 | static const struct intel_watermark_params i965_cursor_wm_info = { | |
e0f0273e VS |
517 | .fifo_size = I965_CURSOR_FIFO, |
518 | .max_wm = I965_CURSOR_MAX_WM, | |
519 | .default_wm = I965_CURSOR_DFT_WM, | |
520 | .guard_size = 2, | |
521 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 ED |
522 | }; |
523 | static const struct intel_watermark_params i945_wm_info = { | |
e0f0273e VS |
524 | .fifo_size = I945_FIFO_SIZE, |
525 | .max_wm = I915_MAX_WM, | |
526 | .default_wm = 1, | |
527 | .guard_size = 2, | |
528 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 ED |
529 | }; |
530 | static const struct intel_watermark_params i915_wm_info = { | |
e0f0273e VS |
531 | .fifo_size = I915_FIFO_SIZE, |
532 | .max_wm = I915_MAX_WM, | |
533 | .default_wm = 1, | |
534 | .guard_size = 2, | |
535 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 | 536 | }; |
9d539105 | 537 | static const struct intel_watermark_params i830_a_wm_info = { |
e0f0273e VS |
538 | .fifo_size = I855GM_FIFO_SIZE, |
539 | .max_wm = I915_MAX_WM, | |
540 | .default_wm = 1, | |
541 | .guard_size = 2, | |
542 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
b445e3b0 | 543 | }; |
9d539105 VS |
544 | static const struct intel_watermark_params i830_bc_wm_info = { |
545 | .fifo_size = I855GM_FIFO_SIZE, | |
546 | .max_wm = I915_MAX_WM/2, | |
547 | .default_wm = 1, | |
548 | .guard_size = 2, | |
549 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
550 | }; | |
feb56b93 | 551 | static const struct intel_watermark_params i845_wm_info = { |
e0f0273e VS |
552 | .fifo_size = I830_FIFO_SIZE, |
553 | .max_wm = I915_MAX_WM, | |
554 | .default_wm = 1, | |
555 | .guard_size = 2, | |
556 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
b445e3b0 ED |
557 | }; |
558 | ||
b445e3b0 ED |
559 | /** |
560 | * intel_calculate_wm - calculate watermark level | |
561 | * @clock_in_khz: pixel clock | |
562 | * @wm: chip FIFO params | |
563 | * @pixel_size: display pixel size | |
564 | * @latency_ns: memory latency for the platform | |
565 | * | |
566 | * Calculate the watermark level (the level at which the display plane will | |
567 | * start fetching from memory again). Each chip has a different display | |
568 | * FIFO size and allocation, so the caller needs to figure that out and pass | |
569 | * in the correct intel_watermark_params structure. | |
570 | * | |
571 | * As the pixel clock runs, the FIFO will be drained at a rate that depends | |
572 | * on the pixel size. When it reaches the watermark level, it'll start | |
573 | * fetching FIFO line sized based chunks from memory until the FIFO fills | |
574 | * past the watermark point. If the FIFO drains completely, a FIFO underrun | |
575 | * will occur, and a display engine hang could result. | |
576 | */ | |
577 | static unsigned long intel_calculate_wm(unsigned long clock_in_khz, | |
578 | const struct intel_watermark_params *wm, | |
579 | int fifo_size, | |
580 | int pixel_size, | |
581 | unsigned long latency_ns) | |
582 | { | |
583 | long entries_required, wm_size; | |
584 | ||
585 | /* | |
586 | * Note: we need to make sure we don't overflow for various clock & | |
587 | * latency values. | |
588 | * clocks go from a few thousand to several hundred thousand. | |
589 | * latency is usually a few thousand | |
590 | */ | |
591 | entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) / | |
592 | 1000; | |
593 | entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size); | |
594 | ||
595 | DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required); | |
596 | ||
597 | wm_size = fifo_size - (entries_required + wm->guard_size); | |
598 | ||
599 | DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size); | |
600 | ||
601 | /* Don't promote wm_size to unsigned... */ | |
602 | if (wm_size > (long)wm->max_wm) | |
603 | wm_size = wm->max_wm; | |
604 | if (wm_size <= 0) | |
605 | wm_size = wm->default_wm; | |
d6feb196 VS |
606 | |
607 | /* | |
608 | * Bspec seems to indicate that the value shouldn't be lower than | |
609 | * 'burst size + 1'. Certainly 830 is quite unhappy with low values. | |
610 | * Lets go for 8 which is the burst size since certain platforms | |
611 | * already use a hardcoded 8 (which is what the spec says should be | |
612 | * done). | |
613 | */ | |
614 | if (wm_size <= 8) | |
615 | wm_size = 8; | |
616 | ||
b445e3b0 ED |
617 | return wm_size; |
618 | } | |
619 | ||
620 | static struct drm_crtc *single_enabled_crtc(struct drm_device *dev) | |
621 | { | |
622 | struct drm_crtc *crtc, *enabled = NULL; | |
623 | ||
70e1e0ec | 624 | for_each_crtc(dev, crtc) { |
3490ea5d | 625 | if (intel_crtc_active(crtc)) { |
b445e3b0 ED |
626 | if (enabled) |
627 | return NULL; | |
628 | enabled = crtc; | |
629 | } | |
630 | } | |
631 | ||
632 | return enabled; | |
633 | } | |
634 | ||
46ba614c | 635 | static void pineview_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 636 | { |
46ba614c | 637 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
638 | struct drm_i915_private *dev_priv = dev->dev_private; |
639 | struct drm_crtc *crtc; | |
640 | const struct cxsr_latency *latency; | |
641 | u32 reg; | |
642 | unsigned long wm; | |
643 | ||
644 | latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3, | |
645 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
646 | if (!latency) { | |
647 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
5209b1f4 | 648 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
649 | return; |
650 | } | |
651 | ||
652 | crtc = single_enabled_crtc(dev); | |
653 | if (crtc) { | |
241bfc38 | 654 | const struct drm_display_mode *adjusted_mode; |
59bea882 | 655 | int pixel_size = crtc->primary->state->fb->bits_per_pixel / 8; |
241bfc38 DL |
656 | int clock; |
657 | ||
6e3c9717 | 658 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 659 | clock = adjusted_mode->crtc_clock; |
b445e3b0 ED |
660 | |
661 | /* Display SR */ | |
662 | wm = intel_calculate_wm(clock, &pineview_display_wm, | |
663 | pineview_display_wm.fifo_size, | |
664 | pixel_size, latency->display_sr); | |
665 | reg = I915_READ(DSPFW1); | |
666 | reg &= ~DSPFW_SR_MASK; | |
f4998963 | 667 | reg |= FW_WM(wm, SR); |
b445e3b0 ED |
668 | I915_WRITE(DSPFW1, reg); |
669 | DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg); | |
670 | ||
671 | /* cursor SR */ | |
672 | wm = intel_calculate_wm(clock, &pineview_cursor_wm, | |
673 | pineview_display_wm.fifo_size, | |
674 | pixel_size, latency->cursor_sr); | |
675 | reg = I915_READ(DSPFW3); | |
676 | reg &= ~DSPFW_CURSOR_SR_MASK; | |
f4998963 | 677 | reg |= FW_WM(wm, CURSOR_SR); |
b445e3b0 ED |
678 | I915_WRITE(DSPFW3, reg); |
679 | ||
680 | /* Display HPLL off SR */ | |
681 | wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm, | |
682 | pineview_display_hplloff_wm.fifo_size, | |
683 | pixel_size, latency->display_hpll_disable); | |
684 | reg = I915_READ(DSPFW3); | |
685 | reg &= ~DSPFW_HPLL_SR_MASK; | |
f4998963 | 686 | reg |= FW_WM(wm, HPLL_SR); |
b445e3b0 ED |
687 | I915_WRITE(DSPFW3, reg); |
688 | ||
689 | /* cursor HPLL off SR */ | |
690 | wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm, | |
691 | pineview_display_hplloff_wm.fifo_size, | |
692 | pixel_size, latency->cursor_hpll_disable); | |
693 | reg = I915_READ(DSPFW3); | |
694 | reg &= ~DSPFW_HPLL_CURSOR_MASK; | |
f4998963 | 695 | reg |= FW_WM(wm, HPLL_CURSOR); |
b445e3b0 ED |
696 | I915_WRITE(DSPFW3, reg); |
697 | DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg); | |
698 | ||
5209b1f4 | 699 | intel_set_memory_cxsr(dev_priv, true); |
b445e3b0 | 700 | } else { |
5209b1f4 | 701 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
702 | } |
703 | } | |
704 | ||
705 | static bool g4x_compute_wm0(struct drm_device *dev, | |
706 | int plane, | |
707 | const struct intel_watermark_params *display, | |
708 | int display_latency_ns, | |
709 | const struct intel_watermark_params *cursor, | |
710 | int cursor_latency_ns, | |
711 | int *plane_wm, | |
712 | int *cursor_wm) | |
713 | { | |
714 | struct drm_crtc *crtc; | |
4fe8590a | 715 | const struct drm_display_mode *adjusted_mode; |
b445e3b0 ED |
716 | int htotal, hdisplay, clock, pixel_size; |
717 | int line_time_us, line_count; | |
718 | int entries, tlb_miss; | |
719 | ||
720 | crtc = intel_get_crtc_for_plane(dev, plane); | |
3490ea5d | 721 | if (!intel_crtc_active(crtc)) { |
b445e3b0 ED |
722 | *cursor_wm = cursor->guard_size; |
723 | *plane_wm = display->guard_size; | |
724 | return false; | |
725 | } | |
726 | ||
6e3c9717 | 727 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 728 | clock = adjusted_mode->crtc_clock; |
fec8cba3 | 729 | htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 730 | hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
59bea882 | 731 | pixel_size = crtc->primary->state->fb->bits_per_pixel / 8; |
b445e3b0 ED |
732 | |
733 | /* Use the small buffer method to calculate plane watermark */ | |
734 | entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000; | |
735 | tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8; | |
736 | if (tlb_miss > 0) | |
737 | entries += tlb_miss; | |
738 | entries = DIV_ROUND_UP(entries, display->cacheline_size); | |
739 | *plane_wm = entries + display->guard_size; | |
740 | if (*plane_wm > (int)display->max_wm) | |
741 | *plane_wm = display->max_wm; | |
742 | ||
743 | /* Use the large buffer method to calculate cursor watermark */ | |
922044c9 | 744 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 | 745 | line_count = (cursor_latency_ns / line_time_us + 1000) / 1000; |
3dd512fb | 746 | entries = line_count * crtc->cursor->state->crtc_w * pixel_size; |
b445e3b0 ED |
747 | tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8; |
748 | if (tlb_miss > 0) | |
749 | entries += tlb_miss; | |
750 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); | |
751 | *cursor_wm = entries + cursor->guard_size; | |
752 | if (*cursor_wm > (int)cursor->max_wm) | |
753 | *cursor_wm = (int)cursor->max_wm; | |
754 | ||
755 | return true; | |
756 | } | |
757 | ||
758 | /* | |
759 | * Check the wm result. | |
760 | * | |
761 | * If any calculated watermark values is larger than the maximum value that | |
762 | * can be programmed into the associated watermark register, that watermark | |
763 | * must be disabled. | |
764 | */ | |
765 | static bool g4x_check_srwm(struct drm_device *dev, | |
766 | int display_wm, int cursor_wm, | |
767 | const struct intel_watermark_params *display, | |
768 | const struct intel_watermark_params *cursor) | |
769 | { | |
770 | DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n", | |
771 | display_wm, cursor_wm); | |
772 | ||
773 | if (display_wm > display->max_wm) { | |
774 | DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n", | |
775 | display_wm, display->max_wm); | |
776 | return false; | |
777 | } | |
778 | ||
779 | if (cursor_wm > cursor->max_wm) { | |
780 | DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n", | |
781 | cursor_wm, cursor->max_wm); | |
782 | return false; | |
783 | } | |
784 | ||
785 | if (!(display_wm || cursor_wm)) { | |
786 | DRM_DEBUG_KMS("SR latency is 0, disabling\n"); | |
787 | return false; | |
788 | } | |
789 | ||
790 | return true; | |
791 | } | |
792 | ||
793 | static bool g4x_compute_srwm(struct drm_device *dev, | |
794 | int plane, | |
795 | int latency_ns, | |
796 | const struct intel_watermark_params *display, | |
797 | const struct intel_watermark_params *cursor, | |
798 | int *display_wm, int *cursor_wm) | |
799 | { | |
800 | struct drm_crtc *crtc; | |
4fe8590a | 801 | const struct drm_display_mode *adjusted_mode; |
b445e3b0 ED |
802 | int hdisplay, htotal, pixel_size, clock; |
803 | unsigned long line_time_us; | |
804 | int line_count, line_size; | |
805 | int small, large; | |
806 | int entries; | |
807 | ||
808 | if (!latency_ns) { | |
809 | *display_wm = *cursor_wm = 0; | |
810 | return false; | |
811 | } | |
812 | ||
813 | crtc = intel_get_crtc_for_plane(dev, plane); | |
6e3c9717 | 814 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 815 | clock = adjusted_mode->crtc_clock; |
fec8cba3 | 816 | htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 817 | hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
59bea882 | 818 | pixel_size = crtc->primary->state->fb->bits_per_pixel / 8; |
b445e3b0 | 819 | |
922044c9 | 820 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 ED |
821 | line_count = (latency_ns / line_time_us + 1000) / 1000; |
822 | line_size = hdisplay * pixel_size; | |
823 | ||
824 | /* Use the minimum of the small and large buffer method for primary */ | |
825 | small = ((clock * pixel_size / 1000) * latency_ns) / 1000; | |
826 | large = line_count * line_size; | |
827 | ||
828 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); | |
829 | *display_wm = entries + display->guard_size; | |
830 | ||
831 | /* calculate the self-refresh watermark for display cursor */ | |
3dd512fb | 832 | entries = line_count * pixel_size * crtc->cursor->state->crtc_w; |
b445e3b0 ED |
833 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); |
834 | *cursor_wm = entries + cursor->guard_size; | |
835 | ||
836 | return g4x_check_srwm(dev, | |
837 | *display_wm, *cursor_wm, | |
838 | display, cursor); | |
839 | } | |
840 | ||
15665979 VS |
841 | #define FW_WM_VLV(value, plane) \ |
842 | (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK_VLV) | |
843 | ||
0018fda1 VS |
844 | static void vlv_write_wm_values(struct intel_crtc *crtc, |
845 | const struct vlv_wm_values *wm) | |
846 | { | |
847 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
848 | enum pipe pipe = crtc->pipe; | |
849 | ||
850 | I915_WRITE(VLV_DDL(pipe), | |
851 | (wm->ddl[pipe].cursor << DDL_CURSOR_SHIFT) | | |
852 | (wm->ddl[pipe].sprite[1] << DDL_SPRITE_SHIFT(1)) | | |
853 | (wm->ddl[pipe].sprite[0] << DDL_SPRITE_SHIFT(0)) | | |
854 | (wm->ddl[pipe].primary << DDL_PLANE_SHIFT)); | |
855 | ||
ae80152d | 856 | I915_WRITE(DSPFW1, |
15665979 VS |
857 | FW_WM(wm->sr.plane, SR) | |
858 | FW_WM(wm->pipe[PIPE_B].cursor, CURSORB) | | |
859 | FW_WM_VLV(wm->pipe[PIPE_B].primary, PLANEB) | | |
860 | FW_WM_VLV(wm->pipe[PIPE_A].primary, PLANEA)); | |
ae80152d | 861 | I915_WRITE(DSPFW2, |
15665979 VS |
862 | FW_WM_VLV(wm->pipe[PIPE_A].sprite[1], SPRITEB) | |
863 | FW_WM(wm->pipe[PIPE_A].cursor, CURSORA) | | |
864 | FW_WM_VLV(wm->pipe[PIPE_A].sprite[0], SPRITEA)); | |
ae80152d | 865 | I915_WRITE(DSPFW3, |
15665979 | 866 | FW_WM(wm->sr.cursor, CURSOR_SR)); |
ae80152d VS |
867 | |
868 | if (IS_CHERRYVIEW(dev_priv)) { | |
869 | I915_WRITE(DSPFW7_CHV, | |
15665979 VS |
870 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[1], SPRITED) | |
871 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[0], SPRITEC)); | |
ae80152d | 872 | I915_WRITE(DSPFW8_CHV, |
15665979 VS |
873 | FW_WM_VLV(wm->pipe[PIPE_C].sprite[1], SPRITEF) | |
874 | FW_WM_VLV(wm->pipe[PIPE_C].sprite[0], SPRITEE)); | |
ae80152d | 875 | I915_WRITE(DSPFW9_CHV, |
15665979 VS |
876 | FW_WM_VLV(wm->pipe[PIPE_C].primary, PLANEC) | |
877 | FW_WM(wm->pipe[PIPE_C].cursor, CURSORC)); | |
ae80152d | 878 | I915_WRITE(DSPHOWM, |
15665979 VS |
879 | FW_WM(wm->sr.plane >> 9, SR_HI) | |
880 | FW_WM(wm->pipe[PIPE_C].sprite[1] >> 8, SPRITEF_HI) | | |
881 | FW_WM(wm->pipe[PIPE_C].sprite[0] >> 8, SPRITEE_HI) | | |
882 | FW_WM(wm->pipe[PIPE_C].primary >> 8, PLANEC_HI) | | |
883 | FW_WM(wm->pipe[PIPE_B].sprite[1] >> 8, SPRITED_HI) | | |
884 | FW_WM(wm->pipe[PIPE_B].sprite[0] >> 8, SPRITEC_HI) | | |
885 | FW_WM(wm->pipe[PIPE_B].primary >> 8, PLANEB_HI) | | |
886 | FW_WM(wm->pipe[PIPE_A].sprite[1] >> 8, SPRITEB_HI) | | |
887 | FW_WM(wm->pipe[PIPE_A].sprite[0] >> 8, SPRITEA_HI) | | |
888 | FW_WM(wm->pipe[PIPE_A].primary >> 8, PLANEA_HI)); | |
ae80152d VS |
889 | } else { |
890 | I915_WRITE(DSPFW7, | |
15665979 VS |
891 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[1], SPRITED) | |
892 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[0], SPRITEC)); | |
ae80152d | 893 | I915_WRITE(DSPHOWM, |
15665979 VS |
894 | FW_WM(wm->sr.plane >> 9, SR_HI) | |
895 | FW_WM(wm->pipe[PIPE_B].sprite[1] >> 8, SPRITED_HI) | | |
896 | FW_WM(wm->pipe[PIPE_B].sprite[0] >> 8, SPRITEC_HI) | | |
897 | FW_WM(wm->pipe[PIPE_B].primary >> 8, PLANEB_HI) | | |
898 | FW_WM(wm->pipe[PIPE_A].sprite[1] >> 8, SPRITEB_HI) | | |
899 | FW_WM(wm->pipe[PIPE_A].sprite[0] >> 8, SPRITEA_HI) | | |
900 | FW_WM(wm->pipe[PIPE_A].primary >> 8, PLANEA_HI)); | |
ae80152d VS |
901 | } |
902 | ||
903 | POSTING_READ(DSPFW1); | |
904 | ||
0018fda1 VS |
905 | dev_priv->wm.vlv = *wm; |
906 | } | |
907 | ||
15665979 VS |
908 | #undef FW_WM_VLV |
909 | ||
341c526f | 910 | static uint8_t vlv_compute_drain_latency(struct drm_crtc *crtc, |
883a3d2f | 911 | struct drm_plane *plane) |
b445e3b0 | 912 | { |
5e56ba45 | 913 | struct drm_device *dev = crtc->dev; |
883a3d2f VS |
914 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
915 | int entries, prec_mult, drain_latency, pixel_size; | |
916 | int clock = intel_crtc->config->base.adjusted_mode.crtc_clock; | |
341c526f | 917 | const int high_precision = IS_CHERRYVIEW(dev) ? 16 : 64; |
b445e3b0 | 918 | |
883a3d2f VS |
919 | /* |
920 | * FIXME the plane might have an fb | |
921 | * but be invisible (eg. due to clipping) | |
922 | */ | |
923 | if (!intel_crtc->active || !plane->state->fb) | |
924 | return 0; | |
925 | ||
0948c265 | 926 | if (WARN(clock == 0, "Pixel clock is zero!\n")) |
341c526f | 927 | return 0; |
b445e3b0 | 928 | |
883a3d2f VS |
929 | pixel_size = drm_format_plane_cpp(plane->state->fb->pixel_format, 0); |
930 | ||
0948c265 | 931 | if (WARN(pixel_size == 0, "Pixel size is zero!\n")) |
341c526f | 932 | return 0; |
b445e3b0 | 933 | |
a398e9c7 | 934 | entries = DIV_ROUND_UP(clock, 1000) * pixel_size; |
abfc00b5 | 935 | |
341c526f VS |
936 | prec_mult = high_precision; |
937 | drain_latency = 64 * prec_mult * 4 / entries; | |
b445e3b0 | 938 | |
341c526f VS |
939 | if (drain_latency > DRAIN_LATENCY_MASK) { |
940 | prec_mult /= 2; | |
941 | drain_latency = 64 * prec_mult * 4 / entries; | |
abfc00b5 VS |
942 | } |
943 | ||
341c526f VS |
944 | if (drain_latency > DRAIN_LATENCY_MASK) |
945 | drain_latency = DRAIN_LATENCY_MASK; | |
b445e3b0 | 946 | |
341c526f VS |
947 | return drain_latency | (prec_mult == high_precision ? |
948 | DDL_PRECISION_HIGH : DDL_PRECISION_LOW); | |
b445e3b0 ED |
949 | } |
950 | ||
ae80152d VS |
951 | static int vlv_compute_wm(struct intel_crtc *crtc, |
952 | struct intel_plane *plane, | |
953 | int fifo_size) | |
b445e3b0 | 954 | { |
ae80152d | 955 | int clock, entries, pixel_size; |
b445e3b0 | 956 | |
ae80152d VS |
957 | /* |
958 | * FIXME the plane might have an fb | |
959 | * but be invisible (eg. due to clipping) | |
960 | */ | |
961 | if (!crtc->active || !plane->base.state->fb) | |
962 | return 0; | |
0948c265 | 963 | |
ae80152d VS |
964 | pixel_size = drm_format_plane_cpp(plane->base.state->fb->pixel_format, 0); |
965 | clock = crtc->config->base.adjusted_mode.crtc_clock; | |
b445e3b0 | 966 | |
ae80152d | 967 | entries = DIV_ROUND_UP(clock, 1000) * pixel_size; |
b445e3b0 | 968 | |
ae80152d VS |
969 | /* |
970 | * Set up the watermark such that we don't start issuing memory | |
971 | * requests until we are within PND's max deadline value (256us). | |
972 | * Idea being to be idle as long as possible while still taking | |
973 | * advatange of PND's deadline scheduling. The limit of 8 | |
974 | * cachelines (used when the FIFO will anyway drain in less time | |
975 | * than 256us) should match what we would be done if trickle | |
976 | * feed were enabled. | |
977 | */ | |
978 | return fifo_size - clamp(DIV_ROUND_UP(256 * entries, 64), 0, fifo_size - 8); | |
979 | } | |
980 | ||
981 | static bool vlv_compute_sr_wm(struct drm_device *dev, | |
982 | struct vlv_wm_values *wm) | |
b445e3b0 | 983 | { |
ae80152d VS |
984 | struct drm_i915_private *dev_priv = to_i915(dev); |
985 | struct drm_crtc *crtc; | |
986 | enum pipe pipe = INVALID_PIPE; | |
987 | int num_planes = 0; | |
988 | int fifo_size = 0; | |
989 | struct intel_plane *plane; | |
b445e3b0 | 990 | |
ae80152d | 991 | wm->sr.cursor = wm->sr.plane = 0; |
b445e3b0 | 992 | |
ae80152d VS |
993 | crtc = single_enabled_crtc(dev); |
994 | /* maxfifo not supported on pipe C */ | |
995 | if (crtc && to_intel_crtc(crtc)->pipe != PIPE_C) { | |
996 | pipe = to_intel_crtc(crtc)->pipe; | |
997 | num_planes = !!wm->pipe[pipe].primary + | |
998 | !!wm->pipe[pipe].sprite[0] + | |
999 | !!wm->pipe[pipe].sprite[1]; | |
1000 | fifo_size = INTEL_INFO(dev_priv)->num_pipes * 512 - 1; | |
1001 | } | |
b445e3b0 | 1002 | |
ae80152d VS |
1003 | if (fifo_size == 0 || num_planes > 1) |
1004 | return false; | |
b445e3b0 | 1005 | |
ae80152d VS |
1006 | wm->sr.cursor = vlv_compute_wm(to_intel_crtc(crtc), |
1007 | to_intel_plane(crtc->cursor), 0x3f); | |
b445e3b0 | 1008 | |
ae80152d VS |
1009 | list_for_each_entry(plane, &dev->mode_config.plane_list, base.head) { |
1010 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) | |
1011 | continue; | |
b445e3b0 | 1012 | |
ae80152d VS |
1013 | if (plane->pipe != pipe) |
1014 | continue; | |
9858425c | 1015 | |
ae80152d VS |
1016 | wm->sr.plane = vlv_compute_wm(to_intel_crtc(crtc), |
1017 | plane, fifo_size); | |
1018 | if (wm->sr.plane != 0) | |
1019 | break; | |
1020 | } | |
1021 | ||
1022 | return true; | |
b445e3b0 ED |
1023 | } |
1024 | ||
ae80152d | 1025 | static void valleyview_update_wm(struct drm_crtc *crtc) |
3c2777fd VS |
1026 | { |
1027 | struct drm_device *dev = crtc->dev; | |
3c2777fd | 1028 | struct drm_i915_private *dev_priv = dev->dev_private; |
ae80152d VS |
1029 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
1030 | enum pipe pipe = intel_crtc->pipe; | |
3c2777fd | 1031 | bool cxsr_enabled; |
ae80152d | 1032 | struct vlv_wm_values wm = dev_priv->wm.vlv; |
3c2777fd | 1033 | |
ae80152d VS |
1034 | wm.ddl[pipe].primary = vlv_compute_drain_latency(crtc, crtc->primary); |
1035 | wm.pipe[pipe].primary = vlv_compute_wm(intel_crtc, | |
1036 | to_intel_plane(crtc->primary), | |
1037 | vlv_get_fifo_size(dev, pipe, 0)); | |
3c2777fd | 1038 | |
ae80152d VS |
1039 | wm.ddl[pipe].cursor = vlv_compute_drain_latency(crtc, crtc->cursor); |
1040 | wm.pipe[pipe].cursor = vlv_compute_wm(intel_crtc, | |
1041 | to_intel_plane(crtc->cursor), | |
1042 | 0x3f); | |
3c2777fd | 1043 | |
ae80152d | 1044 | cxsr_enabled = vlv_compute_sr_wm(dev, &wm); |
3c2777fd | 1045 | |
ae80152d VS |
1046 | if (memcmp(&wm, &dev_priv->wm.vlv, sizeof(wm)) == 0) |
1047 | return; | |
3c2777fd | 1048 | |
ae80152d VS |
1049 | DRM_DEBUG_KMS("Setting FIFO watermarks - %c: plane=%d, cursor=%d, " |
1050 | "SR: plane=%d, cursor=%d\n", pipe_name(pipe), | |
1051 | wm.pipe[pipe].primary, wm.pipe[pipe].cursor, | |
1052 | wm.sr.plane, wm.sr.cursor); | |
3c2777fd | 1053 | |
fc1ac8de VS |
1054 | /* |
1055 | * FIXME DDR DVFS introduces massive memory latencies which | |
1056 | * are not known to system agent so any deadline specified | |
1057 | * by the display may not be respected. To support DDR DVFS | |
1058 | * the watermark code needs to be rewritten to essentially | |
1059 | * bypass deadline mechanism and rely solely on the | |
1060 | * watermarks. For now disable DDR DVFS. | |
1061 | */ | |
1062 | if (IS_CHERRYVIEW(dev_priv)) | |
1063 | chv_set_memory_dvfs(dev_priv, false); | |
1064 | ||
ae80152d VS |
1065 | if (!cxsr_enabled) |
1066 | intel_set_memory_cxsr(dev_priv, false); | |
3c2777fd | 1067 | |
ae80152d | 1068 | vlv_write_wm_values(intel_crtc, &wm); |
3c2777fd VS |
1069 | |
1070 | if (cxsr_enabled) | |
1071 | intel_set_memory_cxsr(dev_priv, true); | |
1072 | } | |
1073 | ||
01e184cc GB |
1074 | static void valleyview_update_sprite_wm(struct drm_plane *plane, |
1075 | struct drm_crtc *crtc, | |
1076 | uint32_t sprite_width, | |
1077 | uint32_t sprite_height, | |
1078 | int pixel_size, | |
1079 | bool enabled, bool scaled) | |
1080 | { | |
1081 | struct drm_device *dev = crtc->dev; | |
1082 | struct drm_i915_private *dev_priv = dev->dev_private; | |
0018fda1 VS |
1083 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
1084 | enum pipe pipe = intel_crtc->pipe; | |
01e184cc | 1085 | int sprite = to_intel_plane(plane)->plane; |
ae80152d | 1086 | bool cxsr_enabled; |
0018fda1 | 1087 | struct vlv_wm_values wm = dev_priv->wm.vlv; |
01e184cc | 1088 | |
ae80152d | 1089 | if (enabled) { |
0018fda1 | 1090 | wm.ddl[pipe].sprite[sprite] = |
883a3d2f | 1091 | vlv_compute_drain_latency(crtc, plane); |
ae80152d VS |
1092 | |
1093 | wm.pipe[pipe].sprite[sprite] = | |
1094 | vlv_compute_wm(intel_crtc, | |
1095 | to_intel_plane(plane), | |
1096 | vlv_get_fifo_size(dev, pipe, sprite+1)); | |
1097 | } else { | |
0018fda1 | 1098 | wm.ddl[pipe].sprite[sprite] = 0; |
ae80152d VS |
1099 | wm.pipe[pipe].sprite[sprite] = 0; |
1100 | } | |
1101 | ||
1102 | cxsr_enabled = vlv_compute_sr_wm(dev, &wm); | |
1103 | ||
1104 | if (memcmp(&wm, &dev_priv->wm.vlv, sizeof(wm)) == 0) | |
1105 | return; | |
1106 | ||
1107 | DRM_DEBUG_KMS("Setting FIFO watermarks - %c: sprite %c=%d, " | |
1108 | "SR: plane=%d, cursor=%d\n", pipe_name(pipe), | |
1109 | sprite_name(pipe, sprite), | |
1110 | wm.pipe[pipe].sprite[sprite], | |
1111 | wm.sr.plane, wm.sr.cursor); | |
1112 | ||
1113 | if (!cxsr_enabled) | |
1114 | intel_set_memory_cxsr(dev_priv, false); | |
01e184cc | 1115 | |
0018fda1 | 1116 | vlv_write_wm_values(intel_crtc, &wm); |
ae80152d VS |
1117 | |
1118 | if (cxsr_enabled) | |
1119 | intel_set_memory_cxsr(dev_priv, true); | |
01e184cc GB |
1120 | } |
1121 | ||
ae80152d VS |
1122 | #define single_plane_enabled(mask) is_power_of_2(mask) |
1123 | ||
46ba614c | 1124 | static void g4x_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1125 | { |
46ba614c | 1126 | struct drm_device *dev = crtc->dev; |
b445e3b0 ED |
1127 | static const int sr_latency_ns = 12000; |
1128 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1129 | int planea_wm, planeb_wm, cursora_wm, cursorb_wm; | |
1130 | int plane_sr, cursor_sr; | |
1131 | unsigned int enabled = 0; | |
9858425c | 1132 | bool cxsr_enabled; |
b445e3b0 | 1133 | |
51cea1f4 | 1134 | if (g4x_compute_wm0(dev, PIPE_A, |
5aef6003 CW |
1135 | &g4x_wm_info, pessimal_latency_ns, |
1136 | &g4x_cursor_wm_info, pessimal_latency_ns, | |
b445e3b0 | 1137 | &planea_wm, &cursora_wm)) |
51cea1f4 | 1138 | enabled |= 1 << PIPE_A; |
b445e3b0 | 1139 | |
51cea1f4 | 1140 | if (g4x_compute_wm0(dev, PIPE_B, |
5aef6003 CW |
1141 | &g4x_wm_info, pessimal_latency_ns, |
1142 | &g4x_cursor_wm_info, pessimal_latency_ns, | |
b445e3b0 | 1143 | &planeb_wm, &cursorb_wm)) |
51cea1f4 | 1144 | enabled |= 1 << PIPE_B; |
b445e3b0 | 1145 | |
b445e3b0 ED |
1146 | if (single_plane_enabled(enabled) && |
1147 | g4x_compute_srwm(dev, ffs(enabled) - 1, | |
1148 | sr_latency_ns, | |
1149 | &g4x_wm_info, | |
1150 | &g4x_cursor_wm_info, | |
52bd02d8 | 1151 | &plane_sr, &cursor_sr)) { |
9858425c | 1152 | cxsr_enabled = true; |
52bd02d8 | 1153 | } else { |
9858425c | 1154 | cxsr_enabled = false; |
5209b1f4 | 1155 | intel_set_memory_cxsr(dev_priv, false); |
52bd02d8 CW |
1156 | plane_sr = cursor_sr = 0; |
1157 | } | |
b445e3b0 | 1158 | |
a5043453 VS |
1159 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, " |
1160 | "B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n", | |
b445e3b0 ED |
1161 | planea_wm, cursora_wm, |
1162 | planeb_wm, cursorb_wm, | |
1163 | plane_sr, cursor_sr); | |
1164 | ||
1165 | I915_WRITE(DSPFW1, | |
f4998963 VS |
1166 | FW_WM(plane_sr, SR) | |
1167 | FW_WM(cursorb_wm, CURSORB) | | |
1168 | FW_WM(planeb_wm, PLANEB) | | |
1169 | FW_WM(planea_wm, PLANEA)); | |
b445e3b0 | 1170 | I915_WRITE(DSPFW2, |
8c919b28 | 1171 | (I915_READ(DSPFW2) & ~DSPFW_CURSORA_MASK) | |
f4998963 | 1172 | FW_WM(cursora_wm, CURSORA)); |
b445e3b0 ED |
1173 | /* HPLL off in SR has some issues on G4x... disable it */ |
1174 | I915_WRITE(DSPFW3, | |
8c919b28 | 1175 | (I915_READ(DSPFW3) & ~(DSPFW_HPLL_SR_EN | DSPFW_CURSOR_SR_MASK)) | |
f4998963 | 1176 | FW_WM(cursor_sr, CURSOR_SR)); |
9858425c ID |
1177 | |
1178 | if (cxsr_enabled) | |
1179 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1180 | } |
1181 | ||
46ba614c | 1182 | static void i965_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1183 | { |
46ba614c | 1184 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1185 | struct drm_i915_private *dev_priv = dev->dev_private; |
1186 | struct drm_crtc *crtc; | |
1187 | int srwm = 1; | |
1188 | int cursor_sr = 16; | |
9858425c | 1189 | bool cxsr_enabled; |
b445e3b0 ED |
1190 | |
1191 | /* Calc sr entries for one plane configs */ | |
1192 | crtc = single_enabled_crtc(dev); | |
1193 | if (crtc) { | |
1194 | /* self-refresh has much higher latency */ | |
1195 | static const int sr_latency_ns = 12000; | |
4fe8590a | 1196 | const struct drm_display_mode *adjusted_mode = |
6e3c9717 | 1197 | &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1198 | int clock = adjusted_mode->crtc_clock; |
fec8cba3 | 1199 | int htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 1200 | int hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
59bea882 | 1201 | int pixel_size = crtc->primary->state->fb->bits_per_pixel / 8; |
b445e3b0 ED |
1202 | unsigned long line_time_us; |
1203 | int entries; | |
1204 | ||
922044c9 | 1205 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 ED |
1206 | |
1207 | /* Use ns/us then divide to preserve precision */ | |
1208 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
1209 | pixel_size * hdisplay; | |
1210 | entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE); | |
1211 | srwm = I965_FIFO_SIZE - entries; | |
1212 | if (srwm < 0) | |
1213 | srwm = 1; | |
1214 | srwm &= 0x1ff; | |
1215 | DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n", | |
1216 | entries, srwm); | |
1217 | ||
1218 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
3dd512fb | 1219 | pixel_size * crtc->cursor->state->crtc_w; |
b445e3b0 ED |
1220 | entries = DIV_ROUND_UP(entries, |
1221 | i965_cursor_wm_info.cacheline_size); | |
1222 | cursor_sr = i965_cursor_wm_info.fifo_size - | |
1223 | (entries + i965_cursor_wm_info.guard_size); | |
1224 | ||
1225 | if (cursor_sr > i965_cursor_wm_info.max_wm) | |
1226 | cursor_sr = i965_cursor_wm_info.max_wm; | |
1227 | ||
1228 | DRM_DEBUG_KMS("self-refresh watermark: display plane %d " | |
1229 | "cursor %d\n", srwm, cursor_sr); | |
1230 | ||
9858425c | 1231 | cxsr_enabled = true; |
b445e3b0 | 1232 | } else { |
9858425c | 1233 | cxsr_enabled = false; |
b445e3b0 | 1234 | /* Turn off self refresh if both pipes are enabled */ |
5209b1f4 | 1235 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
1236 | } |
1237 | ||
1238 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n", | |
1239 | srwm); | |
1240 | ||
1241 | /* 965 has limitations... */ | |
f4998963 VS |
1242 | I915_WRITE(DSPFW1, FW_WM(srwm, SR) | |
1243 | FW_WM(8, CURSORB) | | |
1244 | FW_WM(8, PLANEB) | | |
1245 | FW_WM(8, PLANEA)); | |
1246 | I915_WRITE(DSPFW2, FW_WM(8, CURSORA) | | |
1247 | FW_WM(8, PLANEC_OLD)); | |
b445e3b0 | 1248 | /* update cursor SR watermark */ |
f4998963 | 1249 | I915_WRITE(DSPFW3, FW_WM(cursor_sr, CURSOR_SR)); |
9858425c ID |
1250 | |
1251 | if (cxsr_enabled) | |
1252 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1253 | } |
1254 | ||
f4998963 VS |
1255 | #undef FW_WM |
1256 | ||
46ba614c | 1257 | static void i9xx_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1258 | { |
46ba614c | 1259 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1260 | struct drm_i915_private *dev_priv = dev->dev_private; |
1261 | const struct intel_watermark_params *wm_info; | |
1262 | uint32_t fwater_lo; | |
1263 | uint32_t fwater_hi; | |
1264 | int cwm, srwm = 1; | |
1265 | int fifo_size; | |
1266 | int planea_wm, planeb_wm; | |
1267 | struct drm_crtc *crtc, *enabled = NULL; | |
1268 | ||
1269 | if (IS_I945GM(dev)) | |
1270 | wm_info = &i945_wm_info; | |
1271 | else if (!IS_GEN2(dev)) | |
1272 | wm_info = &i915_wm_info; | |
1273 | else | |
9d539105 | 1274 | wm_info = &i830_a_wm_info; |
b445e3b0 ED |
1275 | |
1276 | fifo_size = dev_priv->display.get_fifo_size(dev, 0); | |
1277 | crtc = intel_get_crtc_for_plane(dev, 0); | |
3490ea5d | 1278 | if (intel_crtc_active(crtc)) { |
241bfc38 | 1279 | const struct drm_display_mode *adjusted_mode; |
59bea882 | 1280 | int cpp = crtc->primary->state->fb->bits_per_pixel / 8; |
b9e0bda3 CW |
1281 | if (IS_GEN2(dev)) |
1282 | cpp = 4; | |
1283 | ||
6e3c9717 | 1284 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1285 | planea_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
b9e0bda3 | 1286 | wm_info, fifo_size, cpp, |
5aef6003 | 1287 | pessimal_latency_ns); |
b445e3b0 | 1288 | enabled = crtc; |
9d539105 | 1289 | } else { |
b445e3b0 | 1290 | planea_wm = fifo_size - wm_info->guard_size; |
9d539105 VS |
1291 | if (planea_wm > (long)wm_info->max_wm) |
1292 | planea_wm = wm_info->max_wm; | |
1293 | } | |
1294 | ||
1295 | if (IS_GEN2(dev)) | |
1296 | wm_info = &i830_bc_wm_info; | |
b445e3b0 ED |
1297 | |
1298 | fifo_size = dev_priv->display.get_fifo_size(dev, 1); | |
1299 | crtc = intel_get_crtc_for_plane(dev, 1); | |
3490ea5d | 1300 | if (intel_crtc_active(crtc)) { |
241bfc38 | 1301 | const struct drm_display_mode *adjusted_mode; |
59bea882 | 1302 | int cpp = crtc->primary->state->fb->bits_per_pixel / 8; |
b9e0bda3 CW |
1303 | if (IS_GEN2(dev)) |
1304 | cpp = 4; | |
1305 | ||
6e3c9717 | 1306 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1307 | planeb_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
b9e0bda3 | 1308 | wm_info, fifo_size, cpp, |
5aef6003 | 1309 | pessimal_latency_ns); |
b445e3b0 ED |
1310 | if (enabled == NULL) |
1311 | enabled = crtc; | |
1312 | else | |
1313 | enabled = NULL; | |
9d539105 | 1314 | } else { |
b445e3b0 | 1315 | planeb_wm = fifo_size - wm_info->guard_size; |
9d539105 VS |
1316 | if (planeb_wm > (long)wm_info->max_wm) |
1317 | planeb_wm = wm_info->max_wm; | |
1318 | } | |
b445e3b0 ED |
1319 | |
1320 | DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm); | |
1321 | ||
2ab1bc9d | 1322 | if (IS_I915GM(dev) && enabled) { |
2ff8fde1 | 1323 | struct drm_i915_gem_object *obj; |
2ab1bc9d | 1324 | |
59bea882 | 1325 | obj = intel_fb_obj(enabled->primary->state->fb); |
2ab1bc9d DV |
1326 | |
1327 | /* self-refresh seems busted with untiled */ | |
2ff8fde1 | 1328 | if (obj->tiling_mode == I915_TILING_NONE) |
2ab1bc9d DV |
1329 | enabled = NULL; |
1330 | } | |
1331 | ||
b445e3b0 ED |
1332 | /* |
1333 | * Overlay gets an aggressive default since video jitter is bad. | |
1334 | */ | |
1335 | cwm = 2; | |
1336 | ||
1337 | /* Play safe and disable self-refresh before adjusting watermarks. */ | |
5209b1f4 | 1338 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
1339 | |
1340 | /* Calc sr entries for one plane configs */ | |
1341 | if (HAS_FW_BLC(dev) && enabled) { | |
1342 | /* self-refresh has much higher latency */ | |
1343 | static const int sr_latency_ns = 6000; | |
4fe8590a | 1344 | const struct drm_display_mode *adjusted_mode = |
6e3c9717 | 1345 | &to_intel_crtc(enabled)->config->base.adjusted_mode; |
241bfc38 | 1346 | int clock = adjusted_mode->crtc_clock; |
fec8cba3 | 1347 | int htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 1348 | int hdisplay = to_intel_crtc(enabled)->config->pipe_src_w; |
59bea882 | 1349 | int pixel_size = enabled->primary->state->fb->bits_per_pixel / 8; |
b445e3b0 ED |
1350 | unsigned long line_time_us; |
1351 | int entries; | |
1352 | ||
922044c9 | 1353 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 ED |
1354 | |
1355 | /* Use ns/us then divide to preserve precision */ | |
1356 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
1357 | pixel_size * hdisplay; | |
1358 | entries = DIV_ROUND_UP(entries, wm_info->cacheline_size); | |
1359 | DRM_DEBUG_KMS("self-refresh entries: %d\n", entries); | |
1360 | srwm = wm_info->fifo_size - entries; | |
1361 | if (srwm < 0) | |
1362 | srwm = 1; | |
1363 | ||
1364 | if (IS_I945G(dev) || IS_I945GM(dev)) | |
1365 | I915_WRITE(FW_BLC_SELF, | |
1366 | FW_BLC_SELF_FIFO_MASK | (srwm & 0xff)); | |
1367 | else if (IS_I915GM(dev)) | |
1368 | I915_WRITE(FW_BLC_SELF, srwm & 0x3f); | |
1369 | } | |
1370 | ||
1371 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n", | |
1372 | planea_wm, planeb_wm, cwm, srwm); | |
1373 | ||
1374 | fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f); | |
1375 | fwater_hi = (cwm & 0x1f); | |
1376 | ||
1377 | /* Set request length to 8 cachelines per fetch */ | |
1378 | fwater_lo = fwater_lo | (1 << 24) | (1 << 8); | |
1379 | fwater_hi = fwater_hi | (1 << 8); | |
1380 | ||
1381 | I915_WRITE(FW_BLC, fwater_lo); | |
1382 | I915_WRITE(FW_BLC2, fwater_hi); | |
1383 | ||
5209b1f4 ID |
1384 | if (enabled) |
1385 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1386 | } |
1387 | ||
feb56b93 | 1388 | static void i845_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1389 | { |
46ba614c | 1390 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1391 | struct drm_i915_private *dev_priv = dev->dev_private; |
1392 | struct drm_crtc *crtc; | |
241bfc38 | 1393 | const struct drm_display_mode *adjusted_mode; |
b445e3b0 ED |
1394 | uint32_t fwater_lo; |
1395 | int planea_wm; | |
1396 | ||
1397 | crtc = single_enabled_crtc(dev); | |
1398 | if (crtc == NULL) | |
1399 | return; | |
1400 | ||
6e3c9717 | 1401 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1402 | planea_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
feb56b93 | 1403 | &i845_wm_info, |
b445e3b0 | 1404 | dev_priv->display.get_fifo_size(dev, 0), |
5aef6003 | 1405 | 4, pessimal_latency_ns); |
b445e3b0 ED |
1406 | fwater_lo = I915_READ(FW_BLC) & ~0xfff; |
1407 | fwater_lo |= (3<<8) | planea_wm; | |
1408 | ||
1409 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm); | |
1410 | ||
1411 | I915_WRITE(FW_BLC, fwater_lo); | |
1412 | } | |
1413 | ||
3658729a VS |
1414 | static uint32_t ilk_pipe_pixel_rate(struct drm_device *dev, |
1415 | struct drm_crtc *crtc) | |
801bcfff PZ |
1416 | { |
1417 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
fd4daa9c | 1418 | uint32_t pixel_rate; |
801bcfff | 1419 | |
6e3c9717 | 1420 | pixel_rate = intel_crtc->config->base.adjusted_mode.crtc_clock; |
801bcfff PZ |
1421 | |
1422 | /* We only use IF-ID interlacing. If we ever use PF-ID we'll need to | |
1423 | * adjust the pixel_rate here. */ | |
1424 | ||
6e3c9717 | 1425 | if (intel_crtc->config->pch_pfit.enabled) { |
801bcfff | 1426 | uint64_t pipe_w, pipe_h, pfit_w, pfit_h; |
6e3c9717 | 1427 | uint32_t pfit_size = intel_crtc->config->pch_pfit.size; |
801bcfff | 1428 | |
6e3c9717 ACO |
1429 | pipe_w = intel_crtc->config->pipe_src_w; |
1430 | pipe_h = intel_crtc->config->pipe_src_h; | |
801bcfff PZ |
1431 | pfit_w = (pfit_size >> 16) & 0xFFFF; |
1432 | pfit_h = pfit_size & 0xFFFF; | |
1433 | if (pipe_w < pfit_w) | |
1434 | pipe_w = pfit_w; | |
1435 | if (pipe_h < pfit_h) | |
1436 | pipe_h = pfit_h; | |
1437 | ||
1438 | pixel_rate = div_u64((uint64_t) pixel_rate * pipe_w * pipe_h, | |
1439 | pfit_w * pfit_h); | |
1440 | } | |
1441 | ||
1442 | return pixel_rate; | |
1443 | } | |
1444 | ||
37126462 | 1445 | /* latency must be in 0.1us units. */ |
23297044 | 1446 | static uint32_t ilk_wm_method1(uint32_t pixel_rate, uint8_t bytes_per_pixel, |
801bcfff PZ |
1447 | uint32_t latency) |
1448 | { | |
1449 | uint64_t ret; | |
1450 | ||
3312ba65 VS |
1451 | if (WARN(latency == 0, "Latency value missing\n")) |
1452 | return UINT_MAX; | |
1453 | ||
801bcfff PZ |
1454 | ret = (uint64_t) pixel_rate * bytes_per_pixel * latency; |
1455 | ret = DIV_ROUND_UP_ULL(ret, 64 * 10000) + 2; | |
1456 | ||
1457 | return ret; | |
1458 | } | |
1459 | ||
37126462 | 1460 | /* latency must be in 0.1us units. */ |
23297044 | 1461 | static uint32_t ilk_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, |
801bcfff PZ |
1462 | uint32_t horiz_pixels, uint8_t bytes_per_pixel, |
1463 | uint32_t latency) | |
1464 | { | |
1465 | uint32_t ret; | |
1466 | ||
3312ba65 VS |
1467 | if (WARN(latency == 0, "Latency value missing\n")) |
1468 | return UINT_MAX; | |
1469 | ||
801bcfff PZ |
1470 | ret = (latency * pixel_rate) / (pipe_htotal * 10000); |
1471 | ret = (ret + 1) * horiz_pixels * bytes_per_pixel; | |
1472 | ret = DIV_ROUND_UP(ret, 64) + 2; | |
1473 | return ret; | |
1474 | } | |
1475 | ||
23297044 | 1476 | static uint32_t ilk_wm_fbc(uint32_t pri_val, uint32_t horiz_pixels, |
cca32e9a PZ |
1477 | uint8_t bytes_per_pixel) |
1478 | { | |
1479 | return DIV_ROUND_UP(pri_val * 64, horiz_pixels * bytes_per_pixel) + 2; | |
1480 | } | |
1481 | ||
2ac96d2a PB |
1482 | struct skl_pipe_wm_parameters { |
1483 | bool active; | |
1484 | uint32_t pipe_htotal; | |
1485 | uint32_t pixel_rate; /* in KHz */ | |
1486 | struct intel_plane_wm_parameters plane[I915_MAX_PLANES]; | |
1487 | struct intel_plane_wm_parameters cursor; | |
1488 | }; | |
1489 | ||
820c1980 | 1490 | struct ilk_pipe_wm_parameters { |
801bcfff | 1491 | bool active; |
801bcfff PZ |
1492 | uint32_t pipe_htotal; |
1493 | uint32_t pixel_rate; | |
c35426d2 VS |
1494 | struct intel_plane_wm_parameters pri; |
1495 | struct intel_plane_wm_parameters spr; | |
1496 | struct intel_plane_wm_parameters cur; | |
801bcfff PZ |
1497 | }; |
1498 | ||
820c1980 | 1499 | struct ilk_wm_maximums { |
cca32e9a PZ |
1500 | uint16_t pri; |
1501 | uint16_t spr; | |
1502 | uint16_t cur; | |
1503 | uint16_t fbc; | |
1504 | }; | |
1505 | ||
240264f4 VS |
1506 | /* used in computing the new watermarks state */ |
1507 | struct intel_wm_config { | |
1508 | unsigned int num_pipes_active; | |
1509 | bool sprites_enabled; | |
1510 | bool sprites_scaled; | |
240264f4 VS |
1511 | }; |
1512 | ||
37126462 VS |
1513 | /* |
1514 | * For both WM_PIPE and WM_LP. | |
1515 | * mem_value must be in 0.1us units. | |
1516 | */ | |
820c1980 | 1517 | static uint32_t ilk_compute_pri_wm(const struct ilk_pipe_wm_parameters *params, |
cca32e9a PZ |
1518 | uint32_t mem_value, |
1519 | bool is_lp) | |
801bcfff | 1520 | { |
cca32e9a PZ |
1521 | uint32_t method1, method2; |
1522 | ||
c35426d2 | 1523 | if (!params->active || !params->pri.enabled) |
801bcfff PZ |
1524 | return 0; |
1525 | ||
23297044 | 1526 | method1 = ilk_wm_method1(params->pixel_rate, |
c35426d2 | 1527 | params->pri.bytes_per_pixel, |
cca32e9a PZ |
1528 | mem_value); |
1529 | ||
1530 | if (!is_lp) | |
1531 | return method1; | |
1532 | ||
23297044 | 1533 | method2 = ilk_wm_method2(params->pixel_rate, |
cca32e9a | 1534 | params->pipe_htotal, |
c35426d2 VS |
1535 | params->pri.horiz_pixels, |
1536 | params->pri.bytes_per_pixel, | |
cca32e9a PZ |
1537 | mem_value); |
1538 | ||
1539 | return min(method1, method2); | |
801bcfff PZ |
1540 | } |
1541 | ||
37126462 VS |
1542 | /* |
1543 | * For both WM_PIPE and WM_LP. | |
1544 | * mem_value must be in 0.1us units. | |
1545 | */ | |
820c1980 | 1546 | static uint32_t ilk_compute_spr_wm(const struct ilk_pipe_wm_parameters *params, |
801bcfff PZ |
1547 | uint32_t mem_value) |
1548 | { | |
1549 | uint32_t method1, method2; | |
1550 | ||
c35426d2 | 1551 | if (!params->active || !params->spr.enabled) |
801bcfff PZ |
1552 | return 0; |
1553 | ||
23297044 | 1554 | method1 = ilk_wm_method1(params->pixel_rate, |
c35426d2 | 1555 | params->spr.bytes_per_pixel, |
801bcfff | 1556 | mem_value); |
23297044 | 1557 | method2 = ilk_wm_method2(params->pixel_rate, |
801bcfff | 1558 | params->pipe_htotal, |
c35426d2 VS |
1559 | params->spr.horiz_pixels, |
1560 | params->spr.bytes_per_pixel, | |
801bcfff PZ |
1561 | mem_value); |
1562 | return min(method1, method2); | |
1563 | } | |
1564 | ||
37126462 VS |
1565 | /* |
1566 | * For both WM_PIPE and WM_LP. | |
1567 | * mem_value must be in 0.1us units. | |
1568 | */ | |
820c1980 | 1569 | static uint32_t ilk_compute_cur_wm(const struct ilk_pipe_wm_parameters *params, |
801bcfff PZ |
1570 | uint32_t mem_value) |
1571 | { | |
c35426d2 | 1572 | if (!params->active || !params->cur.enabled) |
801bcfff PZ |
1573 | return 0; |
1574 | ||
23297044 | 1575 | return ilk_wm_method2(params->pixel_rate, |
801bcfff | 1576 | params->pipe_htotal, |
c35426d2 VS |
1577 | params->cur.horiz_pixels, |
1578 | params->cur.bytes_per_pixel, | |
801bcfff PZ |
1579 | mem_value); |
1580 | } | |
1581 | ||
cca32e9a | 1582 | /* Only for WM_LP. */ |
820c1980 | 1583 | static uint32_t ilk_compute_fbc_wm(const struct ilk_pipe_wm_parameters *params, |
1fda9882 | 1584 | uint32_t pri_val) |
cca32e9a | 1585 | { |
c35426d2 | 1586 | if (!params->active || !params->pri.enabled) |
cca32e9a PZ |
1587 | return 0; |
1588 | ||
23297044 | 1589 | return ilk_wm_fbc(pri_val, |
c35426d2 VS |
1590 | params->pri.horiz_pixels, |
1591 | params->pri.bytes_per_pixel); | |
cca32e9a PZ |
1592 | } |
1593 | ||
158ae64f VS |
1594 | static unsigned int ilk_display_fifo_size(const struct drm_device *dev) |
1595 | { | |
416f4727 VS |
1596 | if (INTEL_INFO(dev)->gen >= 8) |
1597 | return 3072; | |
1598 | else if (INTEL_INFO(dev)->gen >= 7) | |
158ae64f VS |
1599 | return 768; |
1600 | else | |
1601 | return 512; | |
1602 | } | |
1603 | ||
4e975081 VS |
1604 | static unsigned int ilk_plane_wm_reg_max(const struct drm_device *dev, |
1605 | int level, bool is_sprite) | |
1606 | { | |
1607 | if (INTEL_INFO(dev)->gen >= 8) | |
1608 | /* BDW primary/sprite plane watermarks */ | |
1609 | return level == 0 ? 255 : 2047; | |
1610 | else if (INTEL_INFO(dev)->gen >= 7) | |
1611 | /* IVB/HSW primary/sprite plane watermarks */ | |
1612 | return level == 0 ? 127 : 1023; | |
1613 | else if (!is_sprite) | |
1614 | /* ILK/SNB primary plane watermarks */ | |
1615 | return level == 0 ? 127 : 511; | |
1616 | else | |
1617 | /* ILK/SNB sprite plane watermarks */ | |
1618 | return level == 0 ? 63 : 255; | |
1619 | } | |
1620 | ||
1621 | static unsigned int ilk_cursor_wm_reg_max(const struct drm_device *dev, | |
1622 | int level) | |
1623 | { | |
1624 | if (INTEL_INFO(dev)->gen >= 7) | |
1625 | return level == 0 ? 63 : 255; | |
1626 | else | |
1627 | return level == 0 ? 31 : 63; | |
1628 | } | |
1629 | ||
1630 | static unsigned int ilk_fbc_wm_reg_max(const struct drm_device *dev) | |
1631 | { | |
1632 | if (INTEL_INFO(dev)->gen >= 8) | |
1633 | return 31; | |
1634 | else | |
1635 | return 15; | |
1636 | } | |
1637 | ||
158ae64f VS |
1638 | /* Calculate the maximum primary/sprite plane watermark */ |
1639 | static unsigned int ilk_plane_wm_max(const struct drm_device *dev, | |
1640 | int level, | |
240264f4 | 1641 | const struct intel_wm_config *config, |
158ae64f VS |
1642 | enum intel_ddb_partitioning ddb_partitioning, |
1643 | bool is_sprite) | |
1644 | { | |
1645 | unsigned int fifo_size = ilk_display_fifo_size(dev); | |
158ae64f VS |
1646 | |
1647 | /* if sprites aren't enabled, sprites get nothing */ | |
240264f4 | 1648 | if (is_sprite && !config->sprites_enabled) |
158ae64f VS |
1649 | return 0; |
1650 | ||
1651 | /* HSW allows LP1+ watermarks even with multiple pipes */ | |
240264f4 | 1652 | if (level == 0 || config->num_pipes_active > 1) { |
158ae64f VS |
1653 | fifo_size /= INTEL_INFO(dev)->num_pipes; |
1654 | ||
1655 | /* | |
1656 | * For some reason the non self refresh | |
1657 | * FIFO size is only half of the self | |
1658 | * refresh FIFO size on ILK/SNB. | |
1659 | */ | |
1660 | if (INTEL_INFO(dev)->gen <= 6) | |
1661 | fifo_size /= 2; | |
1662 | } | |
1663 | ||
240264f4 | 1664 | if (config->sprites_enabled) { |
158ae64f VS |
1665 | /* level 0 is always calculated with 1:1 split */ |
1666 | if (level > 0 && ddb_partitioning == INTEL_DDB_PART_5_6) { | |
1667 | if (is_sprite) | |
1668 | fifo_size *= 5; | |
1669 | fifo_size /= 6; | |
1670 | } else { | |
1671 | fifo_size /= 2; | |
1672 | } | |
1673 | } | |
1674 | ||
1675 | /* clamp to max that the registers can hold */ | |
4e975081 | 1676 | return min(fifo_size, ilk_plane_wm_reg_max(dev, level, is_sprite)); |
158ae64f VS |
1677 | } |
1678 | ||
1679 | /* Calculate the maximum cursor plane watermark */ | |
1680 | static unsigned int ilk_cursor_wm_max(const struct drm_device *dev, | |
240264f4 VS |
1681 | int level, |
1682 | const struct intel_wm_config *config) | |
158ae64f VS |
1683 | { |
1684 | /* HSW LP1+ watermarks w/ multiple pipes */ | |
240264f4 | 1685 | if (level > 0 && config->num_pipes_active > 1) |
158ae64f VS |
1686 | return 64; |
1687 | ||
1688 | /* otherwise just report max that registers can hold */ | |
4e975081 | 1689 | return ilk_cursor_wm_reg_max(dev, level); |
158ae64f VS |
1690 | } |
1691 | ||
d34ff9c6 | 1692 | static void ilk_compute_wm_maximums(const struct drm_device *dev, |
34982fe1 VS |
1693 | int level, |
1694 | const struct intel_wm_config *config, | |
1695 | enum intel_ddb_partitioning ddb_partitioning, | |
820c1980 | 1696 | struct ilk_wm_maximums *max) |
158ae64f | 1697 | { |
240264f4 VS |
1698 | max->pri = ilk_plane_wm_max(dev, level, config, ddb_partitioning, false); |
1699 | max->spr = ilk_plane_wm_max(dev, level, config, ddb_partitioning, true); | |
1700 | max->cur = ilk_cursor_wm_max(dev, level, config); | |
4e975081 | 1701 | max->fbc = ilk_fbc_wm_reg_max(dev); |
158ae64f VS |
1702 | } |
1703 | ||
a3cb4048 VS |
1704 | static void ilk_compute_wm_reg_maximums(struct drm_device *dev, |
1705 | int level, | |
1706 | struct ilk_wm_maximums *max) | |
1707 | { | |
1708 | max->pri = ilk_plane_wm_reg_max(dev, level, false); | |
1709 | max->spr = ilk_plane_wm_reg_max(dev, level, true); | |
1710 | max->cur = ilk_cursor_wm_reg_max(dev, level); | |
1711 | max->fbc = ilk_fbc_wm_reg_max(dev); | |
1712 | } | |
1713 | ||
d9395655 | 1714 | static bool ilk_validate_wm_level(int level, |
820c1980 | 1715 | const struct ilk_wm_maximums *max, |
d9395655 | 1716 | struct intel_wm_level *result) |
a9786a11 VS |
1717 | { |
1718 | bool ret; | |
1719 | ||
1720 | /* already determined to be invalid? */ | |
1721 | if (!result->enable) | |
1722 | return false; | |
1723 | ||
1724 | result->enable = result->pri_val <= max->pri && | |
1725 | result->spr_val <= max->spr && | |
1726 | result->cur_val <= max->cur; | |
1727 | ||
1728 | ret = result->enable; | |
1729 | ||
1730 | /* | |
1731 | * HACK until we can pre-compute everything, | |
1732 | * and thus fail gracefully if LP0 watermarks | |
1733 | * are exceeded... | |
1734 | */ | |
1735 | if (level == 0 && !result->enable) { | |
1736 | if (result->pri_val > max->pri) | |
1737 | DRM_DEBUG_KMS("Primary WM%d too large %u (max %u)\n", | |
1738 | level, result->pri_val, max->pri); | |
1739 | if (result->spr_val > max->spr) | |
1740 | DRM_DEBUG_KMS("Sprite WM%d too large %u (max %u)\n", | |
1741 | level, result->spr_val, max->spr); | |
1742 | if (result->cur_val > max->cur) | |
1743 | DRM_DEBUG_KMS("Cursor WM%d too large %u (max %u)\n", | |
1744 | level, result->cur_val, max->cur); | |
1745 | ||
1746 | result->pri_val = min_t(uint32_t, result->pri_val, max->pri); | |
1747 | result->spr_val = min_t(uint32_t, result->spr_val, max->spr); | |
1748 | result->cur_val = min_t(uint32_t, result->cur_val, max->cur); | |
1749 | result->enable = true; | |
1750 | } | |
1751 | ||
a9786a11 VS |
1752 | return ret; |
1753 | } | |
1754 | ||
d34ff9c6 | 1755 | static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv, |
6f5ddd17 | 1756 | int level, |
820c1980 | 1757 | const struct ilk_pipe_wm_parameters *p, |
1fd527cc | 1758 | struct intel_wm_level *result) |
6f5ddd17 VS |
1759 | { |
1760 | uint16_t pri_latency = dev_priv->wm.pri_latency[level]; | |
1761 | uint16_t spr_latency = dev_priv->wm.spr_latency[level]; | |
1762 | uint16_t cur_latency = dev_priv->wm.cur_latency[level]; | |
1763 | ||
1764 | /* WM1+ latency values stored in 0.5us units */ | |
1765 | if (level > 0) { | |
1766 | pri_latency *= 5; | |
1767 | spr_latency *= 5; | |
1768 | cur_latency *= 5; | |
1769 | } | |
1770 | ||
1771 | result->pri_val = ilk_compute_pri_wm(p, pri_latency, level); | |
1772 | result->spr_val = ilk_compute_spr_wm(p, spr_latency); | |
1773 | result->cur_val = ilk_compute_cur_wm(p, cur_latency); | |
1774 | result->fbc_val = ilk_compute_fbc_wm(p, result->pri_val); | |
1775 | result->enable = true; | |
1776 | } | |
1777 | ||
801bcfff PZ |
1778 | static uint32_t |
1779 | hsw_compute_linetime_wm(struct drm_device *dev, struct drm_crtc *crtc) | |
1f8eeabf ED |
1780 | { |
1781 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1011d8c4 | 1782 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
6e3c9717 | 1783 | struct drm_display_mode *mode = &intel_crtc->config->base.adjusted_mode; |
85a02deb | 1784 | u32 linetime, ips_linetime; |
1f8eeabf | 1785 | |
3ef00284 | 1786 | if (!intel_crtc->active) |
801bcfff | 1787 | return 0; |
1011d8c4 | 1788 | |
1f8eeabf ED |
1789 | /* The WM are computed with base on how long it takes to fill a single |
1790 | * row at the given clock rate, multiplied by 8. | |
1791 | * */ | |
fec8cba3 JB |
1792 | linetime = DIV_ROUND_CLOSEST(mode->crtc_htotal * 1000 * 8, |
1793 | mode->crtc_clock); | |
1794 | ips_linetime = DIV_ROUND_CLOSEST(mode->crtc_htotal * 1000 * 8, | |
85a02deb | 1795 | intel_ddi_get_cdclk_freq(dev_priv)); |
1f8eeabf | 1796 | |
801bcfff PZ |
1797 | return PIPE_WM_LINETIME_IPS_LINETIME(ips_linetime) | |
1798 | PIPE_WM_LINETIME_TIME(linetime); | |
1f8eeabf ED |
1799 | } |
1800 | ||
2af30a5c | 1801 | static void intel_read_wm_latency(struct drm_device *dev, uint16_t wm[8]) |
12b134df VS |
1802 | { |
1803 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1804 | ||
2af30a5c PB |
1805 | if (IS_GEN9(dev)) { |
1806 | uint32_t val; | |
4f947386 | 1807 | int ret, i; |
367294be | 1808 | int level, max_level = ilk_wm_max_level(dev); |
2af30a5c PB |
1809 | |
1810 | /* read the first set of memory latencies[0:3] */ | |
1811 | val = 0; /* data0 to be programmed to 0 for first set */ | |
1812 | mutex_lock(&dev_priv->rps.hw_lock); | |
1813 | ret = sandybridge_pcode_read(dev_priv, | |
1814 | GEN9_PCODE_READ_MEM_LATENCY, | |
1815 | &val); | |
1816 | mutex_unlock(&dev_priv->rps.hw_lock); | |
1817 | ||
1818 | if (ret) { | |
1819 | DRM_ERROR("SKL Mailbox read error = %d\n", ret); | |
1820 | return; | |
1821 | } | |
1822 | ||
1823 | wm[0] = val & GEN9_MEM_LATENCY_LEVEL_MASK; | |
1824 | wm[1] = (val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) & | |
1825 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
1826 | wm[2] = (val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) & | |
1827 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
1828 | wm[3] = (val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) & | |
1829 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
1830 | ||
1831 | /* read the second set of memory latencies[4:7] */ | |
1832 | val = 1; /* data0 to be programmed to 1 for second set */ | |
1833 | mutex_lock(&dev_priv->rps.hw_lock); | |
1834 | ret = sandybridge_pcode_read(dev_priv, | |
1835 | GEN9_PCODE_READ_MEM_LATENCY, | |
1836 | &val); | |
1837 | mutex_unlock(&dev_priv->rps.hw_lock); | |
1838 | if (ret) { | |
1839 | DRM_ERROR("SKL Mailbox read error = %d\n", ret); | |
1840 | return; | |
1841 | } | |
1842 | ||
1843 | wm[4] = val & GEN9_MEM_LATENCY_LEVEL_MASK; | |
1844 | wm[5] = (val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) & | |
1845 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
1846 | wm[6] = (val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) & | |
1847 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
1848 | wm[7] = (val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) & | |
1849 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
1850 | ||
367294be | 1851 | /* |
6f97235b DL |
1852 | * WaWmMemoryReadLatency:skl |
1853 | * | |
367294be VK |
1854 | * punit doesn't take into account the read latency so we need |
1855 | * to add 2us to the various latency levels we retrieve from | |
1856 | * the punit. | |
1857 | * - W0 is a bit special in that it's the only level that | |
1858 | * can't be disabled if we want to have display working, so | |
1859 | * we always add 2us there. | |
1860 | * - For levels >=1, punit returns 0us latency when they are | |
1861 | * disabled, so we respect that and don't add 2us then | |
4f947386 VK |
1862 | * |
1863 | * Additionally, if a level n (n > 1) has a 0us latency, all | |
1864 | * levels m (m >= n) need to be disabled. We make sure to | |
1865 | * sanitize the values out of the punit to satisfy this | |
1866 | * requirement. | |
367294be VK |
1867 | */ |
1868 | wm[0] += 2; | |
1869 | for (level = 1; level <= max_level; level++) | |
1870 | if (wm[level] != 0) | |
1871 | wm[level] += 2; | |
4f947386 VK |
1872 | else { |
1873 | for (i = level + 1; i <= max_level; i++) | |
1874 | wm[i] = 0; | |
367294be | 1875 | |
4f947386 VK |
1876 | break; |
1877 | } | |
2af30a5c | 1878 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
12b134df VS |
1879 | uint64_t sskpd = I915_READ64(MCH_SSKPD); |
1880 | ||
1881 | wm[0] = (sskpd >> 56) & 0xFF; | |
1882 | if (wm[0] == 0) | |
1883 | wm[0] = sskpd & 0xF; | |
e5d5019e VS |
1884 | wm[1] = (sskpd >> 4) & 0xFF; |
1885 | wm[2] = (sskpd >> 12) & 0xFF; | |
1886 | wm[3] = (sskpd >> 20) & 0x1FF; | |
1887 | wm[4] = (sskpd >> 32) & 0x1FF; | |
63cf9a13 VS |
1888 | } else if (INTEL_INFO(dev)->gen >= 6) { |
1889 | uint32_t sskpd = I915_READ(MCH_SSKPD); | |
1890 | ||
1891 | wm[0] = (sskpd >> SSKPD_WM0_SHIFT) & SSKPD_WM_MASK; | |
1892 | wm[1] = (sskpd >> SSKPD_WM1_SHIFT) & SSKPD_WM_MASK; | |
1893 | wm[2] = (sskpd >> SSKPD_WM2_SHIFT) & SSKPD_WM_MASK; | |
1894 | wm[3] = (sskpd >> SSKPD_WM3_SHIFT) & SSKPD_WM_MASK; | |
3a88d0ac VS |
1895 | } else if (INTEL_INFO(dev)->gen >= 5) { |
1896 | uint32_t mltr = I915_READ(MLTR_ILK); | |
1897 | ||
1898 | /* ILK primary LP0 latency is 700 ns */ | |
1899 | wm[0] = 7; | |
1900 | wm[1] = (mltr >> MLTR_WM1_SHIFT) & ILK_SRLT_MASK; | |
1901 | wm[2] = (mltr >> MLTR_WM2_SHIFT) & ILK_SRLT_MASK; | |
12b134df VS |
1902 | } |
1903 | } | |
1904 | ||
53615a5e VS |
1905 | static void intel_fixup_spr_wm_latency(struct drm_device *dev, uint16_t wm[5]) |
1906 | { | |
1907 | /* ILK sprite LP0 latency is 1300 ns */ | |
1908 | if (INTEL_INFO(dev)->gen == 5) | |
1909 | wm[0] = 13; | |
1910 | } | |
1911 | ||
1912 | static void intel_fixup_cur_wm_latency(struct drm_device *dev, uint16_t wm[5]) | |
1913 | { | |
1914 | /* ILK cursor LP0 latency is 1300 ns */ | |
1915 | if (INTEL_INFO(dev)->gen == 5) | |
1916 | wm[0] = 13; | |
1917 | ||
1918 | /* WaDoubleCursorLP3Latency:ivb */ | |
1919 | if (IS_IVYBRIDGE(dev)) | |
1920 | wm[3] *= 2; | |
1921 | } | |
1922 | ||
546c81fd | 1923 | int ilk_wm_max_level(const struct drm_device *dev) |
26ec971e | 1924 | { |
26ec971e | 1925 | /* how many WM levels are we expecting */ |
2af30a5c PB |
1926 | if (IS_GEN9(dev)) |
1927 | return 7; | |
1928 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
ad0d6dc4 | 1929 | return 4; |
26ec971e | 1930 | else if (INTEL_INFO(dev)->gen >= 6) |
ad0d6dc4 | 1931 | return 3; |
26ec971e | 1932 | else |
ad0d6dc4 VS |
1933 | return 2; |
1934 | } | |
7526ed79 | 1935 | |
ad0d6dc4 VS |
1936 | static void intel_print_wm_latency(struct drm_device *dev, |
1937 | const char *name, | |
2af30a5c | 1938 | const uint16_t wm[8]) |
ad0d6dc4 VS |
1939 | { |
1940 | int level, max_level = ilk_wm_max_level(dev); | |
26ec971e VS |
1941 | |
1942 | for (level = 0; level <= max_level; level++) { | |
1943 | unsigned int latency = wm[level]; | |
1944 | ||
1945 | if (latency == 0) { | |
1946 | DRM_ERROR("%s WM%d latency not provided\n", | |
1947 | name, level); | |
1948 | continue; | |
1949 | } | |
1950 | ||
2af30a5c PB |
1951 | /* |
1952 | * - latencies are in us on gen9. | |
1953 | * - before then, WM1+ latency values are in 0.5us units | |
1954 | */ | |
1955 | if (IS_GEN9(dev)) | |
1956 | latency *= 10; | |
1957 | else if (level > 0) | |
26ec971e VS |
1958 | latency *= 5; |
1959 | ||
1960 | DRM_DEBUG_KMS("%s WM%d latency %u (%u.%u usec)\n", | |
1961 | name, level, wm[level], | |
1962 | latency / 10, latency % 10); | |
1963 | } | |
1964 | } | |
1965 | ||
e95a2f75 VS |
1966 | static bool ilk_increase_wm_latency(struct drm_i915_private *dev_priv, |
1967 | uint16_t wm[5], uint16_t min) | |
1968 | { | |
1969 | int level, max_level = ilk_wm_max_level(dev_priv->dev); | |
1970 | ||
1971 | if (wm[0] >= min) | |
1972 | return false; | |
1973 | ||
1974 | wm[0] = max(wm[0], min); | |
1975 | for (level = 1; level <= max_level; level++) | |
1976 | wm[level] = max_t(uint16_t, wm[level], DIV_ROUND_UP(min, 5)); | |
1977 | ||
1978 | return true; | |
1979 | } | |
1980 | ||
1981 | static void snb_wm_latency_quirk(struct drm_device *dev) | |
1982 | { | |
1983 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1984 | bool changed; | |
1985 | ||
1986 | /* | |
1987 | * The BIOS provided WM memory latency values are often | |
1988 | * inadequate for high resolution displays. Adjust them. | |
1989 | */ | |
1990 | changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12) | | |
1991 | ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12) | | |
1992 | ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12); | |
1993 | ||
1994 | if (!changed) | |
1995 | return; | |
1996 | ||
1997 | DRM_DEBUG_KMS("WM latency values increased to avoid potential underruns\n"); | |
1998 | intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); | |
1999 | intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); | |
2000 | intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); | |
2001 | } | |
2002 | ||
fa50ad61 | 2003 | static void ilk_setup_wm_latency(struct drm_device *dev) |
53615a5e VS |
2004 | { |
2005 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2006 | ||
2007 | intel_read_wm_latency(dev, dev_priv->wm.pri_latency); | |
2008 | ||
2009 | memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency, | |
2010 | sizeof(dev_priv->wm.pri_latency)); | |
2011 | memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency, | |
2012 | sizeof(dev_priv->wm.pri_latency)); | |
2013 | ||
2014 | intel_fixup_spr_wm_latency(dev, dev_priv->wm.spr_latency); | |
2015 | intel_fixup_cur_wm_latency(dev, dev_priv->wm.cur_latency); | |
26ec971e VS |
2016 | |
2017 | intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); | |
2018 | intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); | |
2019 | intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); | |
e95a2f75 VS |
2020 | |
2021 | if (IS_GEN6(dev)) | |
2022 | snb_wm_latency_quirk(dev); | |
53615a5e VS |
2023 | } |
2024 | ||
2af30a5c PB |
2025 | static void skl_setup_wm_latency(struct drm_device *dev) |
2026 | { | |
2027 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2028 | ||
2029 | intel_read_wm_latency(dev, dev_priv->wm.skl_latency); | |
2030 | intel_print_wm_latency(dev, "Gen9 Plane", dev_priv->wm.skl_latency); | |
2031 | } | |
2032 | ||
820c1980 | 2033 | static void ilk_compute_wm_parameters(struct drm_crtc *crtc, |
2a44b76b | 2034 | struct ilk_pipe_wm_parameters *p) |
1011d8c4 | 2035 | { |
7c4a395f VS |
2036 | struct drm_device *dev = crtc->dev; |
2037 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
2038 | enum pipe pipe = intel_crtc->pipe; | |
7c4a395f | 2039 | struct drm_plane *plane; |
1011d8c4 | 2040 | |
3ef00284 | 2041 | if (!intel_crtc->active) |
2a44b76b | 2042 | return; |
801bcfff | 2043 | |
2a44b76b | 2044 | p->active = true; |
6e3c9717 | 2045 | p->pipe_htotal = intel_crtc->config->base.adjusted_mode.crtc_htotal; |
2a44b76b | 2046 | p->pixel_rate = ilk_pipe_pixel_rate(dev, crtc); |
c9f038a1 MR |
2047 | |
2048 | if (crtc->primary->state->fb) { | |
2049 | p->pri.enabled = true; | |
2050 | p->pri.bytes_per_pixel = | |
2051 | crtc->primary->state->fb->bits_per_pixel / 8; | |
2052 | } else { | |
2053 | p->pri.enabled = false; | |
2054 | p->pri.bytes_per_pixel = 0; | |
2055 | } | |
2056 | ||
2057 | if (crtc->cursor->state->fb) { | |
2058 | p->cur.enabled = true; | |
2059 | p->cur.bytes_per_pixel = 4; | |
2060 | } else { | |
2061 | p->cur.enabled = false; | |
2062 | p->cur.bytes_per_pixel = 0; | |
2063 | } | |
6e3c9717 | 2064 | p->pri.horiz_pixels = intel_crtc->config->pipe_src_w; |
3dd512fb | 2065 | p->cur.horiz_pixels = intel_crtc->base.cursor->state->crtc_w; |
7c4a395f | 2066 | |
af2b653b | 2067 | drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) { |
801bcfff | 2068 | struct intel_plane *intel_plane = to_intel_plane(plane); |
801bcfff | 2069 | |
2a44b76b | 2070 | if (intel_plane->pipe == pipe) { |
7c4a395f | 2071 | p->spr = intel_plane->wm; |
2a44b76b VS |
2072 | break; |
2073 | } | |
2074 | } | |
2075 | } | |
2076 | ||
2077 | static void ilk_compute_wm_config(struct drm_device *dev, | |
2078 | struct intel_wm_config *config) | |
2079 | { | |
2080 | struct intel_crtc *intel_crtc; | |
2081 | ||
2082 | /* Compute the currently _active_ config */ | |
d3fcc808 | 2083 | for_each_intel_crtc(dev, intel_crtc) { |
2a44b76b | 2084 | const struct intel_pipe_wm *wm = &intel_crtc->wm.active; |
cca32e9a | 2085 | |
2a44b76b VS |
2086 | if (!wm->pipe_enabled) |
2087 | continue; | |
cca32e9a | 2088 | |
2a44b76b VS |
2089 | config->sprites_enabled |= wm->sprites_enabled; |
2090 | config->sprites_scaled |= wm->sprites_scaled; | |
2091 | config->num_pipes_active++; | |
cca32e9a | 2092 | } |
801bcfff PZ |
2093 | } |
2094 | ||
0b2ae6d7 VS |
2095 | /* Compute new watermarks for the pipe */ |
2096 | static bool intel_compute_pipe_wm(struct drm_crtc *crtc, | |
820c1980 | 2097 | const struct ilk_pipe_wm_parameters *params, |
0b2ae6d7 VS |
2098 | struct intel_pipe_wm *pipe_wm) |
2099 | { | |
2100 | struct drm_device *dev = crtc->dev; | |
d34ff9c6 | 2101 | const struct drm_i915_private *dev_priv = dev->dev_private; |
0b2ae6d7 VS |
2102 | int level, max_level = ilk_wm_max_level(dev); |
2103 | /* LP0 watermark maximums depend on this pipe alone */ | |
2104 | struct intel_wm_config config = { | |
2105 | .num_pipes_active = 1, | |
2106 | .sprites_enabled = params->spr.enabled, | |
2107 | .sprites_scaled = params->spr.scaled, | |
2108 | }; | |
820c1980 | 2109 | struct ilk_wm_maximums max; |
0b2ae6d7 | 2110 | |
2a44b76b VS |
2111 | pipe_wm->pipe_enabled = params->active; |
2112 | pipe_wm->sprites_enabled = params->spr.enabled; | |
2113 | pipe_wm->sprites_scaled = params->spr.scaled; | |
2114 | ||
7b39a0b7 VS |
2115 | /* ILK/SNB: LP2+ watermarks only w/o sprites */ |
2116 | if (INTEL_INFO(dev)->gen <= 6 && params->spr.enabled) | |
2117 | max_level = 1; | |
2118 | ||
2119 | /* ILK/SNB/IVB: LP1+ watermarks only w/o scaling */ | |
2120 | if (params->spr.scaled) | |
2121 | max_level = 0; | |
2122 | ||
a3cb4048 | 2123 | ilk_compute_wm_level(dev_priv, 0, params, &pipe_wm->wm[0]); |
0b2ae6d7 | 2124 | |
a42a5719 | 2125 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
ce0e0713 | 2126 | pipe_wm->linetime = hsw_compute_linetime_wm(dev, crtc); |
0b2ae6d7 | 2127 | |
a3cb4048 VS |
2128 | /* LP0 watermarks always use 1/2 DDB partitioning */ |
2129 | ilk_compute_wm_maximums(dev, 0, &config, INTEL_DDB_PART_1_2, &max); | |
2130 | ||
0b2ae6d7 | 2131 | /* At least LP0 must be valid */ |
a3cb4048 VS |
2132 | if (!ilk_validate_wm_level(0, &max, &pipe_wm->wm[0])) |
2133 | return false; | |
2134 | ||
2135 | ilk_compute_wm_reg_maximums(dev, 1, &max); | |
2136 | ||
2137 | for (level = 1; level <= max_level; level++) { | |
2138 | struct intel_wm_level wm = {}; | |
2139 | ||
2140 | ilk_compute_wm_level(dev_priv, level, params, &wm); | |
2141 | ||
2142 | /* | |
2143 | * Disable any watermark level that exceeds the | |
2144 | * register maximums since such watermarks are | |
2145 | * always invalid. | |
2146 | */ | |
2147 | if (!ilk_validate_wm_level(level, &max, &wm)) | |
2148 | break; | |
2149 | ||
2150 | pipe_wm->wm[level] = wm; | |
2151 | } | |
2152 | ||
2153 | return true; | |
0b2ae6d7 VS |
2154 | } |
2155 | ||
2156 | /* | |
2157 | * Merge the watermarks from all active pipes for a specific level. | |
2158 | */ | |
2159 | static void ilk_merge_wm_level(struct drm_device *dev, | |
2160 | int level, | |
2161 | struct intel_wm_level *ret_wm) | |
2162 | { | |
2163 | const struct intel_crtc *intel_crtc; | |
2164 | ||
d52fea5b VS |
2165 | ret_wm->enable = true; |
2166 | ||
d3fcc808 | 2167 | for_each_intel_crtc(dev, intel_crtc) { |
fe392efd VS |
2168 | const struct intel_pipe_wm *active = &intel_crtc->wm.active; |
2169 | const struct intel_wm_level *wm = &active->wm[level]; | |
2170 | ||
2171 | if (!active->pipe_enabled) | |
2172 | continue; | |
0b2ae6d7 | 2173 | |
d52fea5b VS |
2174 | /* |
2175 | * The watermark values may have been used in the past, | |
2176 | * so we must maintain them in the registers for some | |
2177 | * time even if the level is now disabled. | |
2178 | */ | |
0b2ae6d7 | 2179 | if (!wm->enable) |
d52fea5b | 2180 | ret_wm->enable = false; |
0b2ae6d7 VS |
2181 | |
2182 | ret_wm->pri_val = max(ret_wm->pri_val, wm->pri_val); | |
2183 | ret_wm->spr_val = max(ret_wm->spr_val, wm->spr_val); | |
2184 | ret_wm->cur_val = max(ret_wm->cur_val, wm->cur_val); | |
2185 | ret_wm->fbc_val = max(ret_wm->fbc_val, wm->fbc_val); | |
2186 | } | |
0b2ae6d7 VS |
2187 | } |
2188 | ||
2189 | /* | |
2190 | * Merge all low power watermarks for all active pipes. | |
2191 | */ | |
2192 | static void ilk_wm_merge(struct drm_device *dev, | |
0ba22e26 | 2193 | const struct intel_wm_config *config, |
820c1980 | 2194 | const struct ilk_wm_maximums *max, |
0b2ae6d7 VS |
2195 | struct intel_pipe_wm *merged) |
2196 | { | |
2197 | int level, max_level = ilk_wm_max_level(dev); | |
d52fea5b | 2198 | int last_enabled_level = max_level; |
0b2ae6d7 | 2199 | |
0ba22e26 VS |
2200 | /* ILK/SNB/IVB: LP1+ watermarks only w/ single pipe */ |
2201 | if ((INTEL_INFO(dev)->gen <= 6 || IS_IVYBRIDGE(dev)) && | |
2202 | config->num_pipes_active > 1) | |
2203 | return; | |
2204 | ||
6c8b6c28 VS |
2205 | /* ILK: FBC WM must be disabled always */ |
2206 | merged->fbc_wm_enabled = INTEL_INFO(dev)->gen >= 6; | |
0b2ae6d7 VS |
2207 | |
2208 | /* merge each WM1+ level */ | |
2209 | for (level = 1; level <= max_level; level++) { | |
2210 | struct intel_wm_level *wm = &merged->wm[level]; | |
2211 | ||
2212 | ilk_merge_wm_level(dev, level, wm); | |
2213 | ||
d52fea5b VS |
2214 | if (level > last_enabled_level) |
2215 | wm->enable = false; | |
2216 | else if (!ilk_validate_wm_level(level, max, wm)) | |
2217 | /* make sure all following levels get disabled */ | |
2218 | last_enabled_level = level - 1; | |
0b2ae6d7 VS |
2219 | |
2220 | /* | |
2221 | * The spec says it is preferred to disable | |
2222 | * FBC WMs instead of disabling a WM level. | |
2223 | */ | |
2224 | if (wm->fbc_val > max->fbc) { | |
d52fea5b VS |
2225 | if (wm->enable) |
2226 | merged->fbc_wm_enabled = false; | |
0b2ae6d7 VS |
2227 | wm->fbc_val = 0; |
2228 | } | |
2229 | } | |
6c8b6c28 VS |
2230 | |
2231 | /* ILK: LP2+ must be disabled when FBC WM is disabled but FBC enabled */ | |
2232 | /* | |
2233 | * FIXME this is racy. FBC might get enabled later. | |
2234 | * What we should check here is whether FBC can be | |
2235 | * enabled sometime later. | |
2236 | */ | |
2237 | if (IS_GEN5(dev) && !merged->fbc_wm_enabled && intel_fbc_enabled(dev)) { | |
2238 | for (level = 2; level <= max_level; level++) { | |
2239 | struct intel_wm_level *wm = &merged->wm[level]; | |
2240 | ||
2241 | wm->enable = false; | |
2242 | } | |
2243 | } | |
0b2ae6d7 VS |
2244 | } |
2245 | ||
b380ca3c VS |
2246 | static int ilk_wm_lp_to_level(int wm_lp, const struct intel_pipe_wm *pipe_wm) |
2247 | { | |
2248 | /* LP1,LP2,LP3 levels are either 1,2,3 or 1,3,4 */ | |
2249 | return wm_lp + (wm_lp >= 2 && pipe_wm->wm[4].enable); | |
2250 | } | |
2251 | ||
a68d68ee VS |
2252 | /* The value we need to program into the WM_LPx latency field */ |
2253 | static unsigned int ilk_wm_lp_latency(struct drm_device *dev, int level) | |
2254 | { | |
2255 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2256 | ||
a42a5719 | 2257 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
a68d68ee VS |
2258 | return 2 * level; |
2259 | else | |
2260 | return dev_priv->wm.pri_latency[level]; | |
2261 | } | |
2262 | ||
820c1980 | 2263 | static void ilk_compute_wm_results(struct drm_device *dev, |
0362c781 | 2264 | const struct intel_pipe_wm *merged, |
609cedef | 2265 | enum intel_ddb_partitioning partitioning, |
820c1980 | 2266 | struct ilk_wm_values *results) |
801bcfff | 2267 | { |
0b2ae6d7 VS |
2268 | struct intel_crtc *intel_crtc; |
2269 | int level, wm_lp; | |
cca32e9a | 2270 | |
0362c781 | 2271 | results->enable_fbc_wm = merged->fbc_wm_enabled; |
609cedef | 2272 | results->partitioning = partitioning; |
cca32e9a | 2273 | |
0b2ae6d7 | 2274 | /* LP1+ register values */ |
cca32e9a | 2275 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { |
1fd527cc | 2276 | const struct intel_wm_level *r; |
801bcfff | 2277 | |
b380ca3c | 2278 | level = ilk_wm_lp_to_level(wm_lp, merged); |
0b2ae6d7 | 2279 | |
0362c781 | 2280 | r = &merged->wm[level]; |
cca32e9a | 2281 | |
d52fea5b VS |
2282 | /* |
2283 | * Maintain the watermark values even if the level is | |
2284 | * disabled. Doing otherwise could cause underruns. | |
2285 | */ | |
2286 | results->wm_lp[wm_lp - 1] = | |
a68d68ee | 2287 | (ilk_wm_lp_latency(dev, level) << WM1_LP_LATENCY_SHIFT) | |
416f4727 VS |
2288 | (r->pri_val << WM1_LP_SR_SHIFT) | |
2289 | r->cur_val; | |
2290 | ||
d52fea5b VS |
2291 | if (r->enable) |
2292 | results->wm_lp[wm_lp - 1] |= WM1_LP_SR_EN; | |
2293 | ||
416f4727 VS |
2294 | if (INTEL_INFO(dev)->gen >= 8) |
2295 | results->wm_lp[wm_lp - 1] |= | |
2296 | r->fbc_val << WM1_LP_FBC_SHIFT_BDW; | |
2297 | else | |
2298 | results->wm_lp[wm_lp - 1] |= | |
2299 | r->fbc_val << WM1_LP_FBC_SHIFT; | |
2300 | ||
d52fea5b VS |
2301 | /* |
2302 | * Always set WM1S_LP_EN when spr_val != 0, even if the | |
2303 | * level is disabled. Doing otherwise could cause underruns. | |
2304 | */ | |
6cef2b8a VS |
2305 | if (INTEL_INFO(dev)->gen <= 6 && r->spr_val) { |
2306 | WARN_ON(wm_lp != 1); | |
2307 | results->wm_lp_spr[wm_lp - 1] = WM1S_LP_EN | r->spr_val; | |
2308 | } else | |
2309 | results->wm_lp_spr[wm_lp - 1] = r->spr_val; | |
cca32e9a | 2310 | } |
801bcfff | 2311 | |
0b2ae6d7 | 2312 | /* LP0 register values */ |
d3fcc808 | 2313 | for_each_intel_crtc(dev, intel_crtc) { |
0b2ae6d7 VS |
2314 | enum pipe pipe = intel_crtc->pipe; |
2315 | const struct intel_wm_level *r = | |
2316 | &intel_crtc->wm.active.wm[0]; | |
2317 | ||
2318 | if (WARN_ON(!r->enable)) | |
2319 | continue; | |
2320 | ||
2321 | results->wm_linetime[pipe] = intel_crtc->wm.active.linetime; | |
1011d8c4 | 2322 | |
0b2ae6d7 VS |
2323 | results->wm_pipe[pipe] = |
2324 | (r->pri_val << WM0_PIPE_PLANE_SHIFT) | | |
2325 | (r->spr_val << WM0_PIPE_SPRITE_SHIFT) | | |
2326 | r->cur_val; | |
801bcfff PZ |
2327 | } |
2328 | } | |
2329 | ||
861f3389 PZ |
2330 | /* Find the result with the highest level enabled. Check for enable_fbc_wm in |
2331 | * case both are at the same level. Prefer r1 in case they're the same. */ | |
820c1980 | 2332 | static struct intel_pipe_wm *ilk_find_best_result(struct drm_device *dev, |
198a1e9b VS |
2333 | struct intel_pipe_wm *r1, |
2334 | struct intel_pipe_wm *r2) | |
861f3389 | 2335 | { |
198a1e9b VS |
2336 | int level, max_level = ilk_wm_max_level(dev); |
2337 | int level1 = 0, level2 = 0; | |
861f3389 | 2338 | |
198a1e9b VS |
2339 | for (level = 1; level <= max_level; level++) { |
2340 | if (r1->wm[level].enable) | |
2341 | level1 = level; | |
2342 | if (r2->wm[level].enable) | |
2343 | level2 = level; | |
861f3389 PZ |
2344 | } |
2345 | ||
198a1e9b VS |
2346 | if (level1 == level2) { |
2347 | if (r2->fbc_wm_enabled && !r1->fbc_wm_enabled) | |
861f3389 PZ |
2348 | return r2; |
2349 | else | |
2350 | return r1; | |
198a1e9b | 2351 | } else if (level1 > level2) { |
861f3389 PZ |
2352 | return r1; |
2353 | } else { | |
2354 | return r2; | |
2355 | } | |
2356 | } | |
2357 | ||
49a687c4 VS |
2358 | /* dirty bits used to track which watermarks need changes */ |
2359 | #define WM_DIRTY_PIPE(pipe) (1 << (pipe)) | |
2360 | #define WM_DIRTY_LINETIME(pipe) (1 << (8 + (pipe))) | |
2361 | #define WM_DIRTY_LP(wm_lp) (1 << (15 + (wm_lp))) | |
2362 | #define WM_DIRTY_LP_ALL (WM_DIRTY_LP(1) | WM_DIRTY_LP(2) | WM_DIRTY_LP(3)) | |
2363 | #define WM_DIRTY_FBC (1 << 24) | |
2364 | #define WM_DIRTY_DDB (1 << 25) | |
2365 | ||
055e393f | 2366 | static unsigned int ilk_compute_wm_dirty(struct drm_i915_private *dev_priv, |
820c1980 ID |
2367 | const struct ilk_wm_values *old, |
2368 | const struct ilk_wm_values *new) | |
49a687c4 VS |
2369 | { |
2370 | unsigned int dirty = 0; | |
2371 | enum pipe pipe; | |
2372 | int wm_lp; | |
2373 | ||
055e393f | 2374 | for_each_pipe(dev_priv, pipe) { |
49a687c4 VS |
2375 | if (old->wm_linetime[pipe] != new->wm_linetime[pipe]) { |
2376 | dirty |= WM_DIRTY_LINETIME(pipe); | |
2377 | /* Must disable LP1+ watermarks too */ | |
2378 | dirty |= WM_DIRTY_LP_ALL; | |
2379 | } | |
2380 | ||
2381 | if (old->wm_pipe[pipe] != new->wm_pipe[pipe]) { | |
2382 | dirty |= WM_DIRTY_PIPE(pipe); | |
2383 | /* Must disable LP1+ watermarks too */ | |
2384 | dirty |= WM_DIRTY_LP_ALL; | |
2385 | } | |
2386 | } | |
2387 | ||
2388 | if (old->enable_fbc_wm != new->enable_fbc_wm) { | |
2389 | dirty |= WM_DIRTY_FBC; | |
2390 | /* Must disable LP1+ watermarks too */ | |
2391 | dirty |= WM_DIRTY_LP_ALL; | |
2392 | } | |
2393 | ||
2394 | if (old->partitioning != new->partitioning) { | |
2395 | dirty |= WM_DIRTY_DDB; | |
2396 | /* Must disable LP1+ watermarks too */ | |
2397 | dirty |= WM_DIRTY_LP_ALL; | |
2398 | } | |
2399 | ||
2400 | /* LP1+ watermarks already deemed dirty, no need to continue */ | |
2401 | if (dirty & WM_DIRTY_LP_ALL) | |
2402 | return dirty; | |
2403 | ||
2404 | /* Find the lowest numbered LP1+ watermark in need of an update... */ | |
2405 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { | |
2406 | if (old->wm_lp[wm_lp - 1] != new->wm_lp[wm_lp - 1] || | |
2407 | old->wm_lp_spr[wm_lp - 1] != new->wm_lp_spr[wm_lp - 1]) | |
2408 | break; | |
2409 | } | |
2410 | ||
2411 | /* ...and mark it and all higher numbered LP1+ watermarks as dirty */ | |
2412 | for (; wm_lp <= 3; wm_lp++) | |
2413 | dirty |= WM_DIRTY_LP(wm_lp); | |
2414 | ||
2415 | return dirty; | |
2416 | } | |
2417 | ||
8553c18e VS |
2418 | static bool _ilk_disable_lp_wm(struct drm_i915_private *dev_priv, |
2419 | unsigned int dirty) | |
801bcfff | 2420 | { |
820c1980 | 2421 | struct ilk_wm_values *previous = &dev_priv->wm.hw; |
8553c18e | 2422 | bool changed = false; |
801bcfff | 2423 | |
facd619b VS |
2424 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] & WM1_LP_SR_EN) { |
2425 | previous->wm_lp[2] &= ~WM1_LP_SR_EN; | |
2426 | I915_WRITE(WM3_LP_ILK, previous->wm_lp[2]); | |
8553c18e | 2427 | changed = true; |
facd619b VS |
2428 | } |
2429 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] & WM1_LP_SR_EN) { | |
2430 | previous->wm_lp[1] &= ~WM1_LP_SR_EN; | |
2431 | I915_WRITE(WM2_LP_ILK, previous->wm_lp[1]); | |
8553c18e | 2432 | changed = true; |
facd619b VS |
2433 | } |
2434 | if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] & WM1_LP_SR_EN) { | |
2435 | previous->wm_lp[0] &= ~WM1_LP_SR_EN; | |
2436 | I915_WRITE(WM1_LP_ILK, previous->wm_lp[0]); | |
8553c18e | 2437 | changed = true; |
facd619b | 2438 | } |
801bcfff | 2439 | |
facd619b VS |
2440 | /* |
2441 | * Don't touch WM1S_LP_EN here. | |
2442 | * Doing so could cause underruns. | |
2443 | */ | |
6cef2b8a | 2444 | |
8553c18e VS |
2445 | return changed; |
2446 | } | |
2447 | ||
2448 | /* | |
2449 | * The spec says we shouldn't write when we don't need, because every write | |
2450 | * causes WMs to be re-evaluated, expending some power. | |
2451 | */ | |
820c1980 ID |
2452 | static void ilk_write_wm_values(struct drm_i915_private *dev_priv, |
2453 | struct ilk_wm_values *results) | |
8553c18e VS |
2454 | { |
2455 | struct drm_device *dev = dev_priv->dev; | |
820c1980 | 2456 | struct ilk_wm_values *previous = &dev_priv->wm.hw; |
8553c18e VS |
2457 | unsigned int dirty; |
2458 | uint32_t val; | |
2459 | ||
055e393f | 2460 | dirty = ilk_compute_wm_dirty(dev_priv, previous, results); |
8553c18e VS |
2461 | if (!dirty) |
2462 | return; | |
2463 | ||
2464 | _ilk_disable_lp_wm(dev_priv, dirty); | |
2465 | ||
49a687c4 | 2466 | if (dirty & WM_DIRTY_PIPE(PIPE_A)) |
801bcfff | 2467 | I915_WRITE(WM0_PIPEA_ILK, results->wm_pipe[0]); |
49a687c4 | 2468 | if (dirty & WM_DIRTY_PIPE(PIPE_B)) |
801bcfff | 2469 | I915_WRITE(WM0_PIPEB_ILK, results->wm_pipe[1]); |
49a687c4 | 2470 | if (dirty & WM_DIRTY_PIPE(PIPE_C)) |
801bcfff PZ |
2471 | I915_WRITE(WM0_PIPEC_IVB, results->wm_pipe[2]); |
2472 | ||
49a687c4 | 2473 | if (dirty & WM_DIRTY_LINETIME(PIPE_A)) |
801bcfff | 2474 | I915_WRITE(PIPE_WM_LINETIME(PIPE_A), results->wm_linetime[0]); |
49a687c4 | 2475 | if (dirty & WM_DIRTY_LINETIME(PIPE_B)) |
801bcfff | 2476 | I915_WRITE(PIPE_WM_LINETIME(PIPE_B), results->wm_linetime[1]); |
49a687c4 | 2477 | if (dirty & WM_DIRTY_LINETIME(PIPE_C)) |
801bcfff PZ |
2478 | I915_WRITE(PIPE_WM_LINETIME(PIPE_C), results->wm_linetime[2]); |
2479 | ||
49a687c4 | 2480 | if (dirty & WM_DIRTY_DDB) { |
a42a5719 | 2481 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
ac9545fd VS |
2482 | val = I915_READ(WM_MISC); |
2483 | if (results->partitioning == INTEL_DDB_PART_1_2) | |
2484 | val &= ~WM_MISC_DATA_PARTITION_5_6; | |
2485 | else | |
2486 | val |= WM_MISC_DATA_PARTITION_5_6; | |
2487 | I915_WRITE(WM_MISC, val); | |
2488 | } else { | |
2489 | val = I915_READ(DISP_ARB_CTL2); | |
2490 | if (results->partitioning == INTEL_DDB_PART_1_2) | |
2491 | val &= ~DISP_DATA_PARTITION_5_6; | |
2492 | else | |
2493 | val |= DISP_DATA_PARTITION_5_6; | |
2494 | I915_WRITE(DISP_ARB_CTL2, val); | |
2495 | } | |
1011d8c4 PZ |
2496 | } |
2497 | ||
49a687c4 | 2498 | if (dirty & WM_DIRTY_FBC) { |
cca32e9a PZ |
2499 | val = I915_READ(DISP_ARB_CTL); |
2500 | if (results->enable_fbc_wm) | |
2501 | val &= ~DISP_FBC_WM_DIS; | |
2502 | else | |
2503 | val |= DISP_FBC_WM_DIS; | |
2504 | I915_WRITE(DISP_ARB_CTL, val); | |
2505 | } | |
2506 | ||
954911eb ID |
2507 | if (dirty & WM_DIRTY_LP(1) && |
2508 | previous->wm_lp_spr[0] != results->wm_lp_spr[0]) | |
2509 | I915_WRITE(WM1S_LP_ILK, results->wm_lp_spr[0]); | |
2510 | ||
2511 | if (INTEL_INFO(dev)->gen >= 7) { | |
6cef2b8a VS |
2512 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp_spr[1] != results->wm_lp_spr[1]) |
2513 | I915_WRITE(WM2S_LP_IVB, results->wm_lp_spr[1]); | |
2514 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp_spr[2] != results->wm_lp_spr[2]) | |
2515 | I915_WRITE(WM3S_LP_IVB, results->wm_lp_spr[2]); | |
2516 | } | |
801bcfff | 2517 | |
facd619b | 2518 | if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] != results->wm_lp[0]) |
801bcfff | 2519 | I915_WRITE(WM1_LP_ILK, results->wm_lp[0]); |
facd619b | 2520 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] != results->wm_lp[1]) |
801bcfff | 2521 | I915_WRITE(WM2_LP_ILK, results->wm_lp[1]); |
facd619b | 2522 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] != results->wm_lp[2]) |
801bcfff | 2523 | I915_WRITE(WM3_LP_ILK, results->wm_lp[2]); |
609cedef VS |
2524 | |
2525 | dev_priv->wm.hw = *results; | |
801bcfff PZ |
2526 | } |
2527 | ||
8553c18e VS |
2528 | static bool ilk_disable_lp_wm(struct drm_device *dev) |
2529 | { | |
2530 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2531 | ||
2532 | return _ilk_disable_lp_wm(dev_priv, WM_DIRTY_LP_ALL); | |
2533 | } | |
2534 | ||
b9cec075 DL |
2535 | /* |
2536 | * On gen9, we need to allocate Display Data Buffer (DDB) portions to the | |
2537 | * different active planes. | |
2538 | */ | |
2539 | ||
2540 | #define SKL_DDB_SIZE 896 /* in blocks */ | |
2541 | ||
2542 | static void | |
2543 | skl_ddb_get_pipe_allocation_limits(struct drm_device *dev, | |
2544 | struct drm_crtc *for_crtc, | |
2545 | const struct intel_wm_config *config, | |
2546 | const struct skl_pipe_wm_parameters *params, | |
2547 | struct skl_ddb_entry *alloc /* out */) | |
2548 | { | |
2549 | struct drm_crtc *crtc; | |
2550 | unsigned int pipe_size, ddb_size; | |
2551 | int nth_active_pipe; | |
2552 | ||
2553 | if (!params->active) { | |
2554 | alloc->start = 0; | |
2555 | alloc->end = 0; | |
2556 | return; | |
2557 | } | |
2558 | ||
2559 | ddb_size = SKL_DDB_SIZE; | |
2560 | ||
2561 | ddb_size -= 4; /* 4 blocks for bypass path allocation */ | |
2562 | ||
2563 | nth_active_pipe = 0; | |
2564 | for_each_crtc(dev, crtc) { | |
3ef00284 | 2565 | if (!to_intel_crtc(crtc)->active) |
b9cec075 DL |
2566 | continue; |
2567 | ||
2568 | if (crtc == for_crtc) | |
2569 | break; | |
2570 | ||
2571 | nth_active_pipe++; | |
2572 | } | |
2573 | ||
2574 | pipe_size = ddb_size / config->num_pipes_active; | |
2575 | alloc->start = nth_active_pipe * ddb_size / config->num_pipes_active; | |
16160e3d | 2576 | alloc->end = alloc->start + pipe_size; |
b9cec075 DL |
2577 | } |
2578 | ||
2579 | static unsigned int skl_cursor_allocation(const struct intel_wm_config *config) | |
2580 | { | |
2581 | if (config->num_pipes_active == 1) | |
2582 | return 32; | |
2583 | ||
2584 | return 8; | |
2585 | } | |
2586 | ||
a269c583 DL |
2587 | static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg) |
2588 | { | |
2589 | entry->start = reg & 0x3ff; | |
2590 | entry->end = (reg >> 16) & 0x3ff; | |
16160e3d DL |
2591 | if (entry->end) |
2592 | entry->end += 1; | |
a269c583 DL |
2593 | } |
2594 | ||
08db6652 DL |
2595 | void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv, |
2596 | struct skl_ddb_allocation *ddb /* out */) | |
a269c583 | 2597 | { |
a269c583 DL |
2598 | enum pipe pipe; |
2599 | int plane; | |
2600 | u32 val; | |
2601 | ||
2602 | for_each_pipe(dev_priv, pipe) { | |
dd740780 | 2603 | for_each_plane(dev_priv, pipe, plane) { |
a269c583 DL |
2604 | val = I915_READ(PLANE_BUF_CFG(pipe, plane)); |
2605 | skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane], | |
2606 | val); | |
2607 | } | |
2608 | ||
2609 | val = I915_READ(CUR_BUF_CFG(pipe)); | |
2610 | skl_ddb_entry_init_from_hw(&ddb->cursor[pipe], val); | |
2611 | } | |
2612 | } | |
2613 | ||
b9cec075 DL |
2614 | static unsigned int |
2615 | skl_plane_relative_data_rate(const struct intel_plane_wm_parameters *p) | |
2616 | { | |
2617 | return p->horiz_pixels * p->vert_pixels * p->bytes_per_pixel; | |
2618 | } | |
2619 | ||
2620 | /* | |
2621 | * We don't overflow 32 bits. Worst case is 3 planes enabled, each fetching | |
2622 | * a 8192x4096@32bpp framebuffer: | |
2623 | * 3 * 4096 * 8192 * 4 < 2^32 | |
2624 | */ | |
2625 | static unsigned int | |
2626 | skl_get_total_relative_data_rate(struct intel_crtc *intel_crtc, | |
2627 | const struct skl_pipe_wm_parameters *params) | |
2628 | { | |
2629 | unsigned int total_data_rate = 0; | |
2630 | int plane; | |
2631 | ||
2632 | for (plane = 0; plane < intel_num_planes(intel_crtc); plane++) { | |
2633 | const struct intel_plane_wm_parameters *p; | |
2634 | ||
2635 | p = ¶ms->plane[plane]; | |
2636 | if (!p->enabled) | |
2637 | continue; | |
2638 | ||
2639 | total_data_rate += skl_plane_relative_data_rate(p); | |
2640 | } | |
2641 | ||
2642 | return total_data_rate; | |
2643 | } | |
2644 | ||
2645 | static void | |
2646 | skl_allocate_pipe_ddb(struct drm_crtc *crtc, | |
2647 | const struct intel_wm_config *config, | |
2648 | const struct skl_pipe_wm_parameters *params, | |
2649 | struct skl_ddb_allocation *ddb /* out */) | |
2650 | { | |
2651 | struct drm_device *dev = crtc->dev; | |
dd740780 | 2652 | struct drm_i915_private *dev_priv = dev->dev_private; |
b9cec075 DL |
2653 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
2654 | enum pipe pipe = intel_crtc->pipe; | |
34bb56af | 2655 | struct skl_ddb_entry *alloc = &ddb->pipe[pipe]; |
b9cec075 | 2656 | uint16_t alloc_size, start, cursor_blocks; |
80958155 | 2657 | uint16_t minimum[I915_MAX_PLANES]; |
b9cec075 DL |
2658 | unsigned int total_data_rate; |
2659 | int plane; | |
2660 | ||
34bb56af DL |
2661 | skl_ddb_get_pipe_allocation_limits(dev, crtc, config, params, alloc); |
2662 | alloc_size = skl_ddb_entry_size(alloc); | |
b9cec075 DL |
2663 | if (alloc_size == 0) { |
2664 | memset(ddb->plane[pipe], 0, sizeof(ddb->plane[pipe])); | |
2665 | memset(&ddb->cursor[pipe], 0, sizeof(ddb->cursor[pipe])); | |
2666 | return; | |
2667 | } | |
2668 | ||
2669 | cursor_blocks = skl_cursor_allocation(config); | |
34bb56af DL |
2670 | ddb->cursor[pipe].start = alloc->end - cursor_blocks; |
2671 | ddb->cursor[pipe].end = alloc->end; | |
b9cec075 DL |
2672 | |
2673 | alloc_size -= cursor_blocks; | |
34bb56af | 2674 | alloc->end -= cursor_blocks; |
b9cec075 | 2675 | |
80958155 | 2676 | /* 1. Allocate the mininum required blocks for each active plane */ |
dd740780 | 2677 | for_each_plane(dev_priv, pipe, plane) { |
80958155 DL |
2678 | const struct intel_plane_wm_parameters *p; |
2679 | ||
2680 | p = ¶ms->plane[plane]; | |
2681 | if (!p->enabled) | |
2682 | continue; | |
2683 | ||
2684 | minimum[plane] = 8; | |
2685 | alloc_size -= minimum[plane]; | |
2686 | } | |
2687 | ||
b9cec075 | 2688 | /* |
80958155 DL |
2689 | * 2. Distribute the remaining space in proportion to the amount of |
2690 | * data each plane needs to fetch from memory. | |
b9cec075 DL |
2691 | * |
2692 | * FIXME: we may not allocate every single block here. | |
2693 | */ | |
2694 | total_data_rate = skl_get_total_relative_data_rate(intel_crtc, params); | |
2695 | ||
34bb56af | 2696 | start = alloc->start; |
b9cec075 DL |
2697 | for (plane = 0; plane < intel_num_planes(intel_crtc); plane++) { |
2698 | const struct intel_plane_wm_parameters *p; | |
2699 | unsigned int data_rate; | |
2700 | uint16_t plane_blocks; | |
2701 | ||
2702 | p = ¶ms->plane[plane]; | |
2703 | if (!p->enabled) | |
2704 | continue; | |
2705 | ||
2706 | data_rate = skl_plane_relative_data_rate(p); | |
2707 | ||
2708 | /* | |
2709 | * promote the expression to 64 bits to avoid overflowing, the | |
2710 | * result is < available as data_rate / total_data_rate < 1 | |
2711 | */ | |
80958155 DL |
2712 | plane_blocks = minimum[plane]; |
2713 | plane_blocks += div_u64((uint64_t)alloc_size * data_rate, | |
2714 | total_data_rate); | |
b9cec075 DL |
2715 | |
2716 | ddb->plane[pipe][plane].start = start; | |
16160e3d | 2717 | ddb->plane[pipe][plane].end = start + plane_blocks; |
b9cec075 DL |
2718 | |
2719 | start += plane_blocks; | |
2720 | } | |
2721 | ||
2722 | } | |
2723 | ||
5cec258b | 2724 | static uint32_t skl_pipe_pixel_rate(const struct intel_crtc_state *config) |
2d41c0b5 PB |
2725 | { |
2726 | /* TODO: Take into account the scalers once we support them */ | |
2d112de7 | 2727 | return config->base.adjusted_mode.crtc_clock; |
2d41c0b5 PB |
2728 | } |
2729 | ||
2730 | /* | |
2731 | * The max latency should be 257 (max the punit can code is 255 and we add 2us | |
2732 | * for the read latency) and bytes_per_pixel should always be <= 8, so that | |
2733 | * should allow pixel_rate up to ~2 GHz which seems sufficient since max | |
2734 | * 2xcdclk is 1350 MHz and the pixel rate should never exceed that. | |
2735 | */ | |
2736 | static uint32_t skl_wm_method1(uint32_t pixel_rate, uint8_t bytes_per_pixel, | |
2737 | uint32_t latency) | |
2738 | { | |
2739 | uint32_t wm_intermediate_val, ret; | |
2740 | ||
2741 | if (latency == 0) | |
2742 | return UINT_MAX; | |
2743 | ||
d4c2aa60 | 2744 | wm_intermediate_val = latency * pixel_rate * bytes_per_pixel / 512; |
2d41c0b5 PB |
2745 | ret = DIV_ROUND_UP(wm_intermediate_val, 1000); |
2746 | ||
2747 | return ret; | |
2748 | } | |
2749 | ||
2750 | static uint32_t skl_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, | |
2751 | uint32_t horiz_pixels, uint8_t bytes_per_pixel, | |
0fda6568 | 2752 | uint64_t tiling, uint32_t latency) |
2d41c0b5 | 2753 | { |
d4c2aa60 TU |
2754 | uint32_t ret; |
2755 | uint32_t plane_bytes_per_line, plane_blocks_per_line; | |
2756 | uint32_t wm_intermediate_val; | |
2d41c0b5 PB |
2757 | |
2758 | if (latency == 0) | |
2759 | return UINT_MAX; | |
2760 | ||
2761 | plane_bytes_per_line = horiz_pixels * bytes_per_pixel; | |
0fda6568 TU |
2762 | |
2763 | if (tiling == I915_FORMAT_MOD_Y_TILED || | |
2764 | tiling == I915_FORMAT_MOD_Yf_TILED) { | |
2765 | plane_bytes_per_line *= 4; | |
2766 | plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); | |
2767 | plane_blocks_per_line /= 4; | |
2768 | } else { | |
2769 | plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); | |
2770 | } | |
2771 | ||
2d41c0b5 PB |
2772 | wm_intermediate_val = latency * pixel_rate; |
2773 | ret = DIV_ROUND_UP(wm_intermediate_val, pipe_htotal * 1000) * | |
d4c2aa60 | 2774 | plane_blocks_per_line; |
2d41c0b5 PB |
2775 | |
2776 | return ret; | |
2777 | } | |
2778 | ||
2d41c0b5 PB |
2779 | static bool skl_ddb_allocation_changed(const struct skl_ddb_allocation *new_ddb, |
2780 | const struct intel_crtc *intel_crtc) | |
2781 | { | |
2782 | struct drm_device *dev = intel_crtc->base.dev; | |
2783 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2784 | const struct skl_ddb_allocation *cur_ddb = &dev_priv->wm.skl_hw.ddb; | |
2785 | enum pipe pipe = intel_crtc->pipe; | |
2786 | ||
2787 | if (memcmp(new_ddb->plane[pipe], cur_ddb->plane[pipe], | |
2788 | sizeof(new_ddb->plane[pipe]))) | |
2789 | return true; | |
2790 | ||
2791 | if (memcmp(&new_ddb->cursor[pipe], &cur_ddb->cursor[pipe], | |
2792 | sizeof(new_ddb->cursor[pipe]))) | |
2793 | return true; | |
2794 | ||
2795 | return false; | |
2796 | } | |
2797 | ||
2798 | static void skl_compute_wm_global_parameters(struct drm_device *dev, | |
2799 | struct intel_wm_config *config) | |
2800 | { | |
2801 | struct drm_crtc *crtc; | |
2802 | struct drm_plane *plane; | |
2803 | ||
2804 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) | |
3ef00284 | 2805 | config->num_pipes_active += to_intel_crtc(crtc)->active; |
2d41c0b5 PB |
2806 | |
2807 | /* FIXME: I don't think we need those two global parameters on SKL */ | |
2808 | list_for_each_entry(plane, &dev->mode_config.plane_list, head) { | |
2809 | struct intel_plane *intel_plane = to_intel_plane(plane); | |
2810 | ||
2811 | config->sprites_enabled |= intel_plane->wm.enabled; | |
2812 | config->sprites_scaled |= intel_plane->wm.scaled; | |
2813 | } | |
2814 | } | |
2815 | ||
2816 | static void skl_compute_wm_pipe_parameters(struct drm_crtc *crtc, | |
2817 | struct skl_pipe_wm_parameters *p) | |
2818 | { | |
2819 | struct drm_device *dev = crtc->dev; | |
2820 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
2821 | enum pipe pipe = intel_crtc->pipe; | |
2822 | struct drm_plane *plane; | |
0fda6568 | 2823 | struct drm_framebuffer *fb; |
2d41c0b5 PB |
2824 | int i = 1; /* Index for sprite planes start */ |
2825 | ||
3ef00284 | 2826 | p->active = intel_crtc->active; |
2d41c0b5 | 2827 | if (p->active) { |
6e3c9717 ACO |
2828 | p->pipe_htotal = intel_crtc->config->base.adjusted_mode.crtc_htotal; |
2829 | p->pixel_rate = skl_pipe_pixel_rate(intel_crtc->config); | |
2d41c0b5 | 2830 | |
0fda6568 | 2831 | fb = crtc->primary->state->fb; |
c9f038a1 MR |
2832 | if (fb) { |
2833 | p->plane[0].enabled = true; | |
2834 | p->plane[0].bytes_per_pixel = fb->bits_per_pixel / 8; | |
0fda6568 | 2835 | p->plane[0].tiling = fb->modifier[0]; |
c9f038a1 MR |
2836 | } else { |
2837 | p->plane[0].enabled = false; | |
2838 | p->plane[0].bytes_per_pixel = 0; | |
2839 | p->plane[0].tiling = DRM_FORMAT_MOD_NONE; | |
2840 | } | |
2841 | p->plane[0].horiz_pixels = intel_crtc->config->pipe_src_w; | |
2842 | p->plane[0].vert_pixels = intel_crtc->config->pipe_src_h; | |
2d41c0b5 | 2843 | |
c9f038a1 MR |
2844 | fb = crtc->cursor->state->fb; |
2845 | if (fb) { | |
2846 | p->cursor.enabled = true; | |
2847 | p->cursor.bytes_per_pixel = fb->bits_per_pixel / 8; | |
2848 | p->cursor.horiz_pixels = crtc->cursor->state->crtc_w; | |
2849 | p->cursor.vert_pixels = crtc->cursor->state->crtc_h; | |
2850 | } else { | |
2851 | p->cursor.enabled = false; | |
2852 | p->cursor.bytes_per_pixel = 0; | |
2853 | p->cursor.horiz_pixels = 64; | |
2854 | p->cursor.vert_pixels = 64; | |
2855 | } | |
2d41c0b5 PB |
2856 | } |
2857 | ||
2858 | list_for_each_entry(plane, &dev->mode_config.plane_list, head) { | |
2859 | struct intel_plane *intel_plane = to_intel_plane(plane); | |
2860 | ||
a712f8eb SJ |
2861 | if (intel_plane->pipe == pipe && |
2862 | plane->type == DRM_PLANE_TYPE_OVERLAY) | |
2d41c0b5 PB |
2863 | p->plane[i++] = intel_plane->wm; |
2864 | } | |
2865 | } | |
2866 | ||
d4c2aa60 TU |
2867 | static bool skl_compute_plane_wm(const struct drm_i915_private *dev_priv, |
2868 | struct skl_pipe_wm_parameters *p, | |
afb024aa DL |
2869 | struct intel_plane_wm_parameters *p_params, |
2870 | uint16_t ddb_allocation, | |
d4c2aa60 | 2871 | int level, |
afb024aa DL |
2872 | uint16_t *out_blocks, /* out */ |
2873 | uint8_t *out_lines /* out */) | |
2d41c0b5 | 2874 | { |
d4c2aa60 TU |
2875 | uint32_t latency = dev_priv->wm.skl_latency[level]; |
2876 | uint32_t method1, method2; | |
2877 | uint32_t plane_bytes_per_line, plane_blocks_per_line; | |
2878 | uint32_t res_blocks, res_lines; | |
2879 | uint32_t selected_result; | |
2d41c0b5 | 2880 | |
d4c2aa60 | 2881 | if (latency == 0 || !p->active || !p_params->enabled) |
2d41c0b5 PB |
2882 | return false; |
2883 | ||
2884 | method1 = skl_wm_method1(p->pixel_rate, | |
2885 | p_params->bytes_per_pixel, | |
d4c2aa60 | 2886 | latency); |
2d41c0b5 PB |
2887 | method2 = skl_wm_method2(p->pixel_rate, |
2888 | p->pipe_htotal, | |
2889 | p_params->horiz_pixels, | |
2890 | p_params->bytes_per_pixel, | |
0fda6568 | 2891 | p_params->tiling, |
d4c2aa60 | 2892 | latency); |
2d41c0b5 PB |
2893 | |
2894 | plane_bytes_per_line = p_params->horiz_pixels * | |
2895 | p_params->bytes_per_pixel; | |
d4c2aa60 | 2896 | plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); |
2d41c0b5 | 2897 | |
0fda6568 TU |
2898 | if (p_params->tiling == I915_FORMAT_MOD_Y_TILED || |
2899 | p_params->tiling == I915_FORMAT_MOD_Yf_TILED) { | |
2900 | uint32_t y_tile_minimum = plane_blocks_per_line * 4; | |
2901 | selected_result = max(method2, y_tile_minimum); | |
2902 | } else { | |
2903 | if ((ddb_allocation / plane_blocks_per_line) >= 1) | |
2904 | selected_result = min(method1, method2); | |
2905 | else | |
2906 | selected_result = method1; | |
2907 | } | |
2d41c0b5 | 2908 | |
d4c2aa60 TU |
2909 | res_blocks = selected_result + 1; |
2910 | res_lines = DIV_ROUND_UP(selected_result, plane_blocks_per_line); | |
e6d66171 | 2911 | |
0fda6568 TU |
2912 | if (level >= 1 && level <= 7) { |
2913 | if (p_params->tiling == I915_FORMAT_MOD_Y_TILED || | |
2914 | p_params->tiling == I915_FORMAT_MOD_Yf_TILED) | |
2915 | res_lines += 4; | |
2916 | else | |
2917 | res_blocks++; | |
2918 | } | |
e6d66171 | 2919 | |
d4c2aa60 | 2920 | if (res_blocks >= ddb_allocation || res_lines > 31) |
e6d66171 DL |
2921 | return false; |
2922 | ||
2923 | *out_blocks = res_blocks; | |
2924 | *out_lines = res_lines; | |
2d41c0b5 PB |
2925 | |
2926 | return true; | |
2927 | } | |
2928 | ||
2929 | static void skl_compute_wm_level(const struct drm_i915_private *dev_priv, | |
2930 | struct skl_ddb_allocation *ddb, | |
2931 | struct skl_pipe_wm_parameters *p, | |
2932 | enum pipe pipe, | |
2933 | int level, | |
2934 | int num_planes, | |
2935 | struct skl_wm_level *result) | |
2936 | { | |
2d41c0b5 PB |
2937 | uint16_t ddb_blocks; |
2938 | int i; | |
2939 | ||
2940 | for (i = 0; i < num_planes; i++) { | |
2941 | ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][i]); | |
2942 | ||
d4c2aa60 TU |
2943 | result->plane_en[i] = skl_compute_plane_wm(dev_priv, |
2944 | p, &p->plane[i], | |
2d41c0b5 | 2945 | ddb_blocks, |
d4c2aa60 | 2946 | level, |
2d41c0b5 PB |
2947 | &result->plane_res_b[i], |
2948 | &result->plane_res_l[i]); | |
2949 | } | |
2950 | ||
2951 | ddb_blocks = skl_ddb_entry_size(&ddb->cursor[pipe]); | |
d4c2aa60 TU |
2952 | result->cursor_en = skl_compute_plane_wm(dev_priv, p, &p->cursor, |
2953 | ddb_blocks, level, | |
2954 | &result->cursor_res_b, | |
2d41c0b5 PB |
2955 | &result->cursor_res_l); |
2956 | } | |
2957 | ||
407b50f3 DL |
2958 | static uint32_t |
2959 | skl_compute_linetime_wm(struct drm_crtc *crtc, struct skl_pipe_wm_parameters *p) | |
2960 | { | |
3ef00284 | 2961 | if (!to_intel_crtc(crtc)->active) |
407b50f3 DL |
2962 | return 0; |
2963 | ||
2964 | return DIV_ROUND_UP(8 * p->pipe_htotal * 1000, p->pixel_rate); | |
2965 | ||
2966 | } | |
2967 | ||
2968 | static void skl_compute_transition_wm(struct drm_crtc *crtc, | |
2969 | struct skl_pipe_wm_parameters *params, | |
9414f563 | 2970 | struct skl_wm_level *trans_wm /* out */) |
407b50f3 | 2971 | { |
9414f563 DL |
2972 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
2973 | int i; | |
2974 | ||
407b50f3 DL |
2975 | if (!params->active) |
2976 | return; | |
9414f563 DL |
2977 | |
2978 | /* Until we know more, just disable transition WMs */ | |
2979 | for (i = 0; i < intel_num_planes(intel_crtc); i++) | |
2980 | trans_wm->plane_en[i] = false; | |
2981 | trans_wm->cursor_en = false; | |
407b50f3 DL |
2982 | } |
2983 | ||
2d41c0b5 PB |
2984 | static void skl_compute_pipe_wm(struct drm_crtc *crtc, |
2985 | struct skl_ddb_allocation *ddb, | |
2986 | struct skl_pipe_wm_parameters *params, | |
2987 | struct skl_pipe_wm *pipe_wm) | |
2988 | { | |
2989 | struct drm_device *dev = crtc->dev; | |
2990 | const struct drm_i915_private *dev_priv = dev->dev_private; | |
2991 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
2992 | int level, max_level = ilk_wm_max_level(dev); | |
2993 | ||
2994 | for (level = 0; level <= max_level; level++) { | |
2995 | skl_compute_wm_level(dev_priv, ddb, params, intel_crtc->pipe, | |
2996 | level, intel_num_planes(intel_crtc), | |
2997 | &pipe_wm->wm[level]); | |
2998 | } | |
2999 | pipe_wm->linetime = skl_compute_linetime_wm(crtc, params); | |
3000 | ||
9414f563 | 3001 | skl_compute_transition_wm(crtc, params, &pipe_wm->trans_wm); |
2d41c0b5 PB |
3002 | } |
3003 | ||
3004 | static void skl_compute_wm_results(struct drm_device *dev, | |
3005 | struct skl_pipe_wm_parameters *p, | |
3006 | struct skl_pipe_wm *p_wm, | |
3007 | struct skl_wm_values *r, | |
3008 | struct intel_crtc *intel_crtc) | |
3009 | { | |
3010 | int level, max_level = ilk_wm_max_level(dev); | |
3011 | enum pipe pipe = intel_crtc->pipe; | |
9414f563 DL |
3012 | uint32_t temp; |
3013 | int i; | |
2d41c0b5 PB |
3014 | |
3015 | for (level = 0; level <= max_level; level++) { | |
2d41c0b5 PB |
3016 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { |
3017 | temp = 0; | |
2d41c0b5 PB |
3018 | |
3019 | temp |= p_wm->wm[level].plane_res_l[i] << | |
3020 | PLANE_WM_LINES_SHIFT; | |
3021 | temp |= p_wm->wm[level].plane_res_b[i]; | |
3022 | if (p_wm->wm[level].plane_en[i]) | |
3023 | temp |= PLANE_WM_EN; | |
3024 | ||
3025 | r->plane[pipe][i][level] = temp; | |
2d41c0b5 PB |
3026 | } |
3027 | ||
3028 | temp = 0; | |
2d41c0b5 PB |
3029 | |
3030 | temp |= p_wm->wm[level].cursor_res_l << PLANE_WM_LINES_SHIFT; | |
3031 | temp |= p_wm->wm[level].cursor_res_b; | |
3032 | ||
3033 | if (p_wm->wm[level].cursor_en) | |
3034 | temp |= PLANE_WM_EN; | |
3035 | ||
3036 | r->cursor[pipe][level] = temp; | |
2d41c0b5 PB |
3037 | |
3038 | } | |
3039 | ||
9414f563 DL |
3040 | /* transition WMs */ |
3041 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
3042 | temp = 0; | |
3043 | temp |= p_wm->trans_wm.plane_res_l[i] << PLANE_WM_LINES_SHIFT; | |
3044 | temp |= p_wm->trans_wm.plane_res_b[i]; | |
3045 | if (p_wm->trans_wm.plane_en[i]) | |
3046 | temp |= PLANE_WM_EN; | |
3047 | ||
3048 | r->plane_trans[pipe][i] = temp; | |
3049 | } | |
3050 | ||
3051 | temp = 0; | |
3052 | temp |= p_wm->trans_wm.cursor_res_l << PLANE_WM_LINES_SHIFT; | |
3053 | temp |= p_wm->trans_wm.cursor_res_b; | |
3054 | if (p_wm->trans_wm.cursor_en) | |
3055 | temp |= PLANE_WM_EN; | |
3056 | ||
3057 | r->cursor_trans[pipe] = temp; | |
3058 | ||
2d41c0b5 PB |
3059 | r->wm_linetime[pipe] = p_wm->linetime; |
3060 | } | |
3061 | ||
16160e3d DL |
3062 | static void skl_ddb_entry_write(struct drm_i915_private *dev_priv, uint32_t reg, |
3063 | const struct skl_ddb_entry *entry) | |
3064 | { | |
3065 | if (entry->end) | |
3066 | I915_WRITE(reg, (entry->end - 1) << 16 | entry->start); | |
3067 | else | |
3068 | I915_WRITE(reg, 0); | |
3069 | } | |
3070 | ||
2d41c0b5 PB |
3071 | static void skl_write_wm_values(struct drm_i915_private *dev_priv, |
3072 | const struct skl_wm_values *new) | |
3073 | { | |
3074 | struct drm_device *dev = dev_priv->dev; | |
3075 | struct intel_crtc *crtc; | |
3076 | ||
3077 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) { | |
3078 | int i, level, max_level = ilk_wm_max_level(dev); | |
3079 | enum pipe pipe = crtc->pipe; | |
3080 | ||
5d374d96 DL |
3081 | if (!new->dirty[pipe]) |
3082 | continue; | |
8211bd5b | 3083 | |
5d374d96 | 3084 | I915_WRITE(PIPE_WM_LINETIME(pipe), new->wm_linetime[pipe]); |
8211bd5b | 3085 | |
5d374d96 DL |
3086 | for (level = 0; level <= max_level; level++) { |
3087 | for (i = 0; i < intel_num_planes(crtc); i++) | |
3088 | I915_WRITE(PLANE_WM(pipe, i, level), | |
3089 | new->plane[pipe][i][level]); | |
3090 | I915_WRITE(CUR_WM(pipe, level), | |
3091 | new->cursor[pipe][level]); | |
2d41c0b5 | 3092 | } |
5d374d96 DL |
3093 | for (i = 0; i < intel_num_planes(crtc); i++) |
3094 | I915_WRITE(PLANE_WM_TRANS(pipe, i), | |
3095 | new->plane_trans[pipe][i]); | |
3096 | I915_WRITE(CUR_WM_TRANS(pipe), new->cursor_trans[pipe]); | |
3097 | ||
3098 | for (i = 0; i < intel_num_planes(crtc); i++) | |
3099 | skl_ddb_entry_write(dev_priv, | |
3100 | PLANE_BUF_CFG(pipe, i), | |
3101 | &new->ddb.plane[pipe][i]); | |
3102 | ||
3103 | skl_ddb_entry_write(dev_priv, CUR_BUF_CFG(pipe), | |
3104 | &new->ddb.cursor[pipe]); | |
2d41c0b5 | 3105 | } |
2d41c0b5 PB |
3106 | } |
3107 | ||
0e8fb7ba DL |
3108 | /* |
3109 | * When setting up a new DDB allocation arrangement, we need to correctly | |
3110 | * sequence the times at which the new allocations for the pipes are taken into | |
3111 | * account or we'll have pipes fetching from space previously allocated to | |
3112 | * another pipe. | |
3113 | * | |
3114 | * Roughly the sequence looks like: | |
3115 | * 1. re-allocate the pipe(s) with the allocation being reduced and not | |
3116 | * overlapping with a previous light-up pipe (another way to put it is: | |
3117 | * pipes with their new allocation strickly included into their old ones). | |
3118 | * 2. re-allocate the other pipes that get their allocation reduced | |
3119 | * 3. allocate the pipes having their allocation increased | |
3120 | * | |
3121 | * Steps 1. and 2. are here to take care of the following case: | |
3122 | * - Initially DDB looks like this: | |
3123 | * | B | C | | |
3124 | * - enable pipe A. | |
3125 | * - pipe B has a reduced DDB allocation that overlaps with the old pipe C | |
3126 | * allocation | |
3127 | * | A | B | C | | |
3128 | * | |
3129 | * We need to sequence the re-allocation: C, B, A (and not B, C, A). | |
3130 | */ | |
3131 | ||
d21b795c DL |
3132 | static void |
3133 | skl_wm_flush_pipe(struct drm_i915_private *dev_priv, enum pipe pipe, int pass) | |
0e8fb7ba | 3134 | { |
0e8fb7ba DL |
3135 | int plane; |
3136 | ||
d21b795c DL |
3137 | DRM_DEBUG_KMS("flush pipe %c (pass %d)\n", pipe_name(pipe), pass); |
3138 | ||
dd740780 | 3139 | for_each_plane(dev_priv, pipe, plane) { |
0e8fb7ba DL |
3140 | I915_WRITE(PLANE_SURF(pipe, plane), |
3141 | I915_READ(PLANE_SURF(pipe, plane))); | |
3142 | } | |
3143 | I915_WRITE(CURBASE(pipe), I915_READ(CURBASE(pipe))); | |
3144 | } | |
3145 | ||
3146 | static bool | |
3147 | skl_ddb_allocation_included(const struct skl_ddb_allocation *old, | |
3148 | const struct skl_ddb_allocation *new, | |
3149 | enum pipe pipe) | |
3150 | { | |
3151 | uint16_t old_size, new_size; | |
3152 | ||
3153 | old_size = skl_ddb_entry_size(&old->pipe[pipe]); | |
3154 | new_size = skl_ddb_entry_size(&new->pipe[pipe]); | |
3155 | ||
3156 | return old_size != new_size && | |
3157 | new->pipe[pipe].start >= old->pipe[pipe].start && | |
3158 | new->pipe[pipe].end <= old->pipe[pipe].end; | |
3159 | } | |
3160 | ||
3161 | static void skl_flush_wm_values(struct drm_i915_private *dev_priv, | |
3162 | struct skl_wm_values *new_values) | |
3163 | { | |
3164 | struct drm_device *dev = dev_priv->dev; | |
3165 | struct skl_ddb_allocation *cur_ddb, *new_ddb; | |
3166 | bool reallocated[I915_MAX_PIPES] = {false, false, false}; | |
3167 | struct intel_crtc *crtc; | |
3168 | enum pipe pipe; | |
3169 | ||
3170 | new_ddb = &new_values->ddb; | |
3171 | cur_ddb = &dev_priv->wm.skl_hw.ddb; | |
3172 | ||
3173 | /* | |
3174 | * First pass: flush the pipes with the new allocation contained into | |
3175 | * the old space. | |
3176 | * | |
3177 | * We'll wait for the vblank on those pipes to ensure we can safely | |
3178 | * re-allocate the freed space without this pipe fetching from it. | |
3179 | */ | |
3180 | for_each_intel_crtc(dev, crtc) { | |
3181 | if (!crtc->active) | |
3182 | continue; | |
3183 | ||
3184 | pipe = crtc->pipe; | |
3185 | ||
3186 | if (!skl_ddb_allocation_included(cur_ddb, new_ddb, pipe)) | |
3187 | continue; | |
3188 | ||
d21b795c | 3189 | skl_wm_flush_pipe(dev_priv, pipe, 1); |
0e8fb7ba DL |
3190 | intel_wait_for_vblank(dev, pipe); |
3191 | ||
3192 | reallocated[pipe] = true; | |
3193 | } | |
3194 | ||
3195 | ||
3196 | /* | |
3197 | * Second pass: flush the pipes that are having their allocation | |
3198 | * reduced, but overlapping with a previous allocation. | |
3199 | * | |
3200 | * Here as well we need to wait for the vblank to make sure the freed | |
3201 | * space is not used anymore. | |
3202 | */ | |
3203 | for_each_intel_crtc(dev, crtc) { | |
3204 | if (!crtc->active) | |
3205 | continue; | |
3206 | ||
3207 | pipe = crtc->pipe; | |
3208 | ||
3209 | if (reallocated[pipe]) | |
3210 | continue; | |
3211 | ||
3212 | if (skl_ddb_entry_size(&new_ddb->pipe[pipe]) < | |
3213 | skl_ddb_entry_size(&cur_ddb->pipe[pipe])) { | |
d21b795c | 3214 | skl_wm_flush_pipe(dev_priv, pipe, 2); |
0e8fb7ba | 3215 | intel_wait_for_vblank(dev, pipe); |
d9d8e6b3 | 3216 | reallocated[pipe] = true; |
0e8fb7ba | 3217 | } |
0e8fb7ba DL |
3218 | } |
3219 | ||
3220 | /* | |
3221 | * Third pass: flush the pipes that got more space allocated. | |
3222 | * | |
3223 | * We don't need to actively wait for the update here, next vblank | |
3224 | * will just get more DDB space with the correct WM values. | |
3225 | */ | |
3226 | for_each_intel_crtc(dev, crtc) { | |
3227 | if (!crtc->active) | |
3228 | continue; | |
3229 | ||
3230 | pipe = crtc->pipe; | |
3231 | ||
3232 | /* | |
3233 | * At this point, only the pipes more space than before are | |
3234 | * left to re-allocate. | |
3235 | */ | |
3236 | if (reallocated[pipe]) | |
3237 | continue; | |
3238 | ||
d21b795c | 3239 | skl_wm_flush_pipe(dev_priv, pipe, 3); |
0e8fb7ba DL |
3240 | } |
3241 | } | |
3242 | ||
2d41c0b5 PB |
3243 | static bool skl_update_pipe_wm(struct drm_crtc *crtc, |
3244 | struct skl_pipe_wm_parameters *params, | |
3245 | struct intel_wm_config *config, | |
3246 | struct skl_ddb_allocation *ddb, /* out */ | |
3247 | struct skl_pipe_wm *pipe_wm /* out */) | |
3248 | { | |
3249 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3250 | ||
3251 | skl_compute_wm_pipe_parameters(crtc, params); | |
b9cec075 | 3252 | skl_allocate_pipe_ddb(crtc, config, params, ddb); |
2d41c0b5 PB |
3253 | skl_compute_pipe_wm(crtc, ddb, params, pipe_wm); |
3254 | ||
3255 | if (!memcmp(&intel_crtc->wm.skl_active, pipe_wm, sizeof(*pipe_wm))) | |
3256 | return false; | |
3257 | ||
3258 | intel_crtc->wm.skl_active = *pipe_wm; | |
3259 | return true; | |
3260 | } | |
3261 | ||
3262 | static void skl_update_other_pipe_wm(struct drm_device *dev, | |
3263 | struct drm_crtc *crtc, | |
3264 | struct intel_wm_config *config, | |
3265 | struct skl_wm_values *r) | |
3266 | { | |
3267 | struct intel_crtc *intel_crtc; | |
3268 | struct intel_crtc *this_crtc = to_intel_crtc(crtc); | |
3269 | ||
3270 | /* | |
3271 | * If the WM update hasn't changed the allocation for this_crtc (the | |
3272 | * crtc we are currently computing the new WM values for), other | |
3273 | * enabled crtcs will keep the same allocation and we don't need to | |
3274 | * recompute anything for them. | |
3275 | */ | |
3276 | if (!skl_ddb_allocation_changed(&r->ddb, this_crtc)) | |
3277 | return; | |
3278 | ||
3279 | /* | |
3280 | * Otherwise, because of this_crtc being freshly enabled/disabled, the | |
3281 | * other active pipes need new DDB allocation and WM values. | |
3282 | */ | |
3283 | list_for_each_entry(intel_crtc, &dev->mode_config.crtc_list, | |
3284 | base.head) { | |
3285 | struct skl_pipe_wm_parameters params = {}; | |
3286 | struct skl_pipe_wm pipe_wm = {}; | |
3287 | bool wm_changed; | |
3288 | ||
3289 | if (this_crtc->pipe == intel_crtc->pipe) | |
3290 | continue; | |
3291 | ||
3292 | if (!intel_crtc->active) | |
3293 | continue; | |
3294 | ||
3295 | wm_changed = skl_update_pipe_wm(&intel_crtc->base, | |
3296 | ¶ms, config, | |
3297 | &r->ddb, &pipe_wm); | |
3298 | ||
3299 | /* | |
3300 | * If we end up re-computing the other pipe WM values, it's | |
3301 | * because it was really needed, so we expect the WM values to | |
3302 | * be different. | |
3303 | */ | |
3304 | WARN_ON(!wm_changed); | |
3305 | ||
3306 | skl_compute_wm_results(dev, ¶ms, &pipe_wm, r, intel_crtc); | |
3307 | r->dirty[intel_crtc->pipe] = true; | |
3308 | } | |
3309 | } | |
3310 | ||
3311 | static void skl_update_wm(struct drm_crtc *crtc) | |
3312 | { | |
3313 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3314 | struct drm_device *dev = crtc->dev; | |
3315 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3316 | struct skl_pipe_wm_parameters params = {}; | |
3317 | struct skl_wm_values *results = &dev_priv->wm.skl_results; | |
3318 | struct skl_pipe_wm pipe_wm = {}; | |
3319 | struct intel_wm_config config = {}; | |
3320 | ||
3321 | memset(results, 0, sizeof(*results)); | |
3322 | ||
3323 | skl_compute_wm_global_parameters(dev, &config); | |
3324 | ||
3325 | if (!skl_update_pipe_wm(crtc, ¶ms, &config, | |
3326 | &results->ddb, &pipe_wm)) | |
3327 | return; | |
3328 | ||
3329 | skl_compute_wm_results(dev, ¶ms, &pipe_wm, results, intel_crtc); | |
3330 | results->dirty[intel_crtc->pipe] = true; | |
3331 | ||
3332 | skl_update_other_pipe_wm(dev, crtc, &config, results); | |
3333 | skl_write_wm_values(dev_priv, results); | |
0e8fb7ba | 3334 | skl_flush_wm_values(dev_priv, results); |
53b0deb4 DL |
3335 | |
3336 | /* store the new configuration */ | |
3337 | dev_priv->wm.skl_hw = *results; | |
2d41c0b5 PB |
3338 | } |
3339 | ||
3340 | static void | |
3341 | skl_update_sprite_wm(struct drm_plane *plane, struct drm_crtc *crtc, | |
3342 | uint32_t sprite_width, uint32_t sprite_height, | |
3343 | int pixel_size, bool enabled, bool scaled) | |
3344 | { | |
3345 | struct intel_plane *intel_plane = to_intel_plane(plane); | |
0fda6568 | 3346 | struct drm_framebuffer *fb = plane->state->fb; |
2d41c0b5 PB |
3347 | |
3348 | intel_plane->wm.enabled = enabled; | |
3349 | intel_plane->wm.scaled = scaled; | |
3350 | intel_plane->wm.horiz_pixels = sprite_width; | |
3351 | intel_plane->wm.vert_pixels = sprite_height; | |
3352 | intel_plane->wm.bytes_per_pixel = pixel_size; | |
0fda6568 TU |
3353 | intel_plane->wm.tiling = DRM_FORMAT_MOD_NONE; |
3354 | /* | |
3355 | * Framebuffer can be NULL on plane disable, but it does not | |
3356 | * matter for watermarks if we assume no tiling in that case. | |
3357 | */ | |
3358 | if (fb) | |
3359 | intel_plane->wm.tiling = fb->modifier[0]; | |
2d41c0b5 PB |
3360 | |
3361 | skl_update_wm(crtc); | |
3362 | } | |
3363 | ||
820c1980 | 3364 | static void ilk_update_wm(struct drm_crtc *crtc) |
801bcfff | 3365 | { |
7c4a395f | 3366 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
46ba614c | 3367 | struct drm_device *dev = crtc->dev; |
801bcfff | 3368 | struct drm_i915_private *dev_priv = dev->dev_private; |
820c1980 ID |
3369 | struct ilk_wm_maximums max; |
3370 | struct ilk_pipe_wm_parameters params = {}; | |
3371 | struct ilk_wm_values results = {}; | |
77c122bc | 3372 | enum intel_ddb_partitioning partitioning; |
7c4a395f | 3373 | struct intel_pipe_wm pipe_wm = {}; |
198a1e9b | 3374 | struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm; |
a485bfb8 | 3375 | struct intel_wm_config config = {}; |
7c4a395f | 3376 | |
2a44b76b | 3377 | ilk_compute_wm_parameters(crtc, ¶ms); |
7c4a395f VS |
3378 | |
3379 | intel_compute_pipe_wm(crtc, ¶ms, &pipe_wm); | |
3380 | ||
3381 | if (!memcmp(&intel_crtc->wm.active, &pipe_wm, sizeof(pipe_wm))) | |
3382 | return; | |
861f3389 | 3383 | |
7c4a395f | 3384 | intel_crtc->wm.active = pipe_wm; |
861f3389 | 3385 | |
2a44b76b VS |
3386 | ilk_compute_wm_config(dev, &config); |
3387 | ||
34982fe1 | 3388 | ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_1_2, &max); |
0ba22e26 | 3389 | ilk_wm_merge(dev, &config, &max, &lp_wm_1_2); |
a485bfb8 VS |
3390 | |
3391 | /* 5/6 split only in single pipe config on IVB+ */ | |
ec98c8d1 VS |
3392 | if (INTEL_INFO(dev)->gen >= 7 && |
3393 | config.num_pipes_active == 1 && config.sprites_enabled) { | |
34982fe1 | 3394 | ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_5_6, &max); |
0ba22e26 | 3395 | ilk_wm_merge(dev, &config, &max, &lp_wm_5_6); |
0362c781 | 3396 | |
820c1980 | 3397 | best_lp_wm = ilk_find_best_result(dev, &lp_wm_1_2, &lp_wm_5_6); |
861f3389 | 3398 | } else { |
198a1e9b | 3399 | best_lp_wm = &lp_wm_1_2; |
861f3389 PZ |
3400 | } |
3401 | ||
198a1e9b | 3402 | partitioning = (best_lp_wm == &lp_wm_1_2) ? |
77c122bc | 3403 | INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6; |
801bcfff | 3404 | |
820c1980 | 3405 | ilk_compute_wm_results(dev, best_lp_wm, partitioning, &results); |
609cedef | 3406 | |
820c1980 | 3407 | ilk_write_wm_values(dev_priv, &results); |
1011d8c4 PZ |
3408 | } |
3409 | ||
ed57cb8a DL |
3410 | static void |
3411 | ilk_update_sprite_wm(struct drm_plane *plane, | |
3412 | struct drm_crtc *crtc, | |
3413 | uint32_t sprite_width, uint32_t sprite_height, | |
3414 | int pixel_size, bool enabled, bool scaled) | |
526682e9 | 3415 | { |
8553c18e | 3416 | struct drm_device *dev = plane->dev; |
adf3d35e | 3417 | struct intel_plane *intel_plane = to_intel_plane(plane); |
526682e9 | 3418 | |
adf3d35e VS |
3419 | intel_plane->wm.enabled = enabled; |
3420 | intel_plane->wm.scaled = scaled; | |
3421 | intel_plane->wm.horiz_pixels = sprite_width; | |
ed57cb8a | 3422 | intel_plane->wm.vert_pixels = sprite_width; |
adf3d35e | 3423 | intel_plane->wm.bytes_per_pixel = pixel_size; |
526682e9 | 3424 | |
8553c18e VS |
3425 | /* |
3426 | * IVB workaround: must disable low power watermarks for at least | |
3427 | * one frame before enabling scaling. LP watermarks can be re-enabled | |
3428 | * when scaling is disabled. | |
3429 | * | |
3430 | * WaCxSRDisabledForSpriteScaling:ivb | |
3431 | */ | |
3432 | if (IS_IVYBRIDGE(dev) && scaled && ilk_disable_lp_wm(dev)) | |
3433 | intel_wait_for_vblank(dev, intel_plane->pipe); | |
3434 | ||
820c1980 | 3435 | ilk_update_wm(crtc); |
526682e9 PZ |
3436 | } |
3437 | ||
3078999f PB |
3438 | static void skl_pipe_wm_active_state(uint32_t val, |
3439 | struct skl_pipe_wm *active, | |
3440 | bool is_transwm, | |
3441 | bool is_cursor, | |
3442 | int i, | |
3443 | int level) | |
3444 | { | |
3445 | bool is_enabled = (val & PLANE_WM_EN) != 0; | |
3446 | ||
3447 | if (!is_transwm) { | |
3448 | if (!is_cursor) { | |
3449 | active->wm[level].plane_en[i] = is_enabled; | |
3450 | active->wm[level].plane_res_b[i] = | |
3451 | val & PLANE_WM_BLOCKS_MASK; | |
3452 | active->wm[level].plane_res_l[i] = | |
3453 | (val >> PLANE_WM_LINES_SHIFT) & | |
3454 | PLANE_WM_LINES_MASK; | |
3455 | } else { | |
3456 | active->wm[level].cursor_en = is_enabled; | |
3457 | active->wm[level].cursor_res_b = | |
3458 | val & PLANE_WM_BLOCKS_MASK; | |
3459 | active->wm[level].cursor_res_l = | |
3460 | (val >> PLANE_WM_LINES_SHIFT) & | |
3461 | PLANE_WM_LINES_MASK; | |
3462 | } | |
3463 | } else { | |
3464 | if (!is_cursor) { | |
3465 | active->trans_wm.plane_en[i] = is_enabled; | |
3466 | active->trans_wm.plane_res_b[i] = | |
3467 | val & PLANE_WM_BLOCKS_MASK; | |
3468 | active->trans_wm.plane_res_l[i] = | |
3469 | (val >> PLANE_WM_LINES_SHIFT) & | |
3470 | PLANE_WM_LINES_MASK; | |
3471 | } else { | |
3472 | active->trans_wm.cursor_en = is_enabled; | |
3473 | active->trans_wm.cursor_res_b = | |
3474 | val & PLANE_WM_BLOCKS_MASK; | |
3475 | active->trans_wm.cursor_res_l = | |
3476 | (val >> PLANE_WM_LINES_SHIFT) & | |
3477 | PLANE_WM_LINES_MASK; | |
3478 | } | |
3479 | } | |
3480 | } | |
3481 | ||
3482 | static void skl_pipe_wm_get_hw_state(struct drm_crtc *crtc) | |
3483 | { | |
3484 | struct drm_device *dev = crtc->dev; | |
3485 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3486 | struct skl_wm_values *hw = &dev_priv->wm.skl_hw; | |
3487 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3488 | struct skl_pipe_wm *active = &intel_crtc->wm.skl_active; | |
3489 | enum pipe pipe = intel_crtc->pipe; | |
3490 | int level, i, max_level; | |
3491 | uint32_t temp; | |
3492 | ||
3493 | max_level = ilk_wm_max_level(dev); | |
3494 | ||
3495 | hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe)); | |
3496 | ||
3497 | for (level = 0; level <= max_level; level++) { | |
3498 | for (i = 0; i < intel_num_planes(intel_crtc); i++) | |
3499 | hw->plane[pipe][i][level] = | |
3500 | I915_READ(PLANE_WM(pipe, i, level)); | |
3501 | hw->cursor[pipe][level] = I915_READ(CUR_WM(pipe, level)); | |
3502 | } | |
3503 | ||
3504 | for (i = 0; i < intel_num_planes(intel_crtc); i++) | |
3505 | hw->plane_trans[pipe][i] = I915_READ(PLANE_WM_TRANS(pipe, i)); | |
3506 | hw->cursor_trans[pipe] = I915_READ(CUR_WM_TRANS(pipe)); | |
3507 | ||
3ef00284 | 3508 | if (!intel_crtc->active) |
3078999f PB |
3509 | return; |
3510 | ||
3511 | hw->dirty[pipe] = true; | |
3512 | ||
3513 | active->linetime = hw->wm_linetime[pipe]; | |
3514 | ||
3515 | for (level = 0; level <= max_level; level++) { | |
3516 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
3517 | temp = hw->plane[pipe][i][level]; | |
3518 | skl_pipe_wm_active_state(temp, active, false, | |
3519 | false, i, level); | |
3520 | } | |
3521 | temp = hw->cursor[pipe][level]; | |
3522 | skl_pipe_wm_active_state(temp, active, false, true, i, level); | |
3523 | } | |
3524 | ||
3525 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
3526 | temp = hw->plane_trans[pipe][i]; | |
3527 | skl_pipe_wm_active_state(temp, active, true, false, i, 0); | |
3528 | } | |
3529 | ||
3530 | temp = hw->cursor_trans[pipe]; | |
3531 | skl_pipe_wm_active_state(temp, active, true, true, i, 0); | |
3532 | } | |
3533 | ||
3534 | void skl_wm_get_hw_state(struct drm_device *dev) | |
3535 | { | |
a269c583 DL |
3536 | struct drm_i915_private *dev_priv = dev->dev_private; |
3537 | struct skl_ddb_allocation *ddb = &dev_priv->wm.skl_hw.ddb; | |
3078999f PB |
3538 | struct drm_crtc *crtc; |
3539 | ||
a269c583 | 3540 | skl_ddb_get_hw_state(dev_priv, ddb); |
3078999f PB |
3541 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
3542 | skl_pipe_wm_get_hw_state(crtc); | |
3543 | } | |
3544 | ||
243e6a44 VS |
3545 | static void ilk_pipe_wm_get_hw_state(struct drm_crtc *crtc) |
3546 | { | |
3547 | struct drm_device *dev = crtc->dev; | |
3548 | struct drm_i915_private *dev_priv = dev->dev_private; | |
820c1980 | 3549 | struct ilk_wm_values *hw = &dev_priv->wm.hw; |
243e6a44 VS |
3550 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
3551 | struct intel_pipe_wm *active = &intel_crtc->wm.active; | |
3552 | enum pipe pipe = intel_crtc->pipe; | |
3553 | static const unsigned int wm0_pipe_reg[] = { | |
3554 | [PIPE_A] = WM0_PIPEA_ILK, | |
3555 | [PIPE_B] = WM0_PIPEB_ILK, | |
3556 | [PIPE_C] = WM0_PIPEC_IVB, | |
3557 | }; | |
3558 | ||
3559 | hw->wm_pipe[pipe] = I915_READ(wm0_pipe_reg[pipe]); | |
a42a5719 | 3560 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
ce0e0713 | 3561 | hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe)); |
243e6a44 | 3562 | |
3ef00284 | 3563 | active->pipe_enabled = intel_crtc->active; |
2a44b76b VS |
3564 | |
3565 | if (active->pipe_enabled) { | |
243e6a44 VS |
3566 | u32 tmp = hw->wm_pipe[pipe]; |
3567 | ||
3568 | /* | |
3569 | * For active pipes LP0 watermark is marked as | |
3570 | * enabled, and LP1+ watermaks as disabled since | |
3571 | * we can't really reverse compute them in case | |
3572 | * multiple pipes are active. | |
3573 | */ | |
3574 | active->wm[0].enable = true; | |
3575 | active->wm[0].pri_val = (tmp & WM0_PIPE_PLANE_MASK) >> WM0_PIPE_PLANE_SHIFT; | |
3576 | active->wm[0].spr_val = (tmp & WM0_PIPE_SPRITE_MASK) >> WM0_PIPE_SPRITE_SHIFT; | |
3577 | active->wm[0].cur_val = tmp & WM0_PIPE_CURSOR_MASK; | |
3578 | active->linetime = hw->wm_linetime[pipe]; | |
3579 | } else { | |
3580 | int level, max_level = ilk_wm_max_level(dev); | |
3581 | ||
3582 | /* | |
3583 | * For inactive pipes, all watermark levels | |
3584 | * should be marked as enabled but zeroed, | |
3585 | * which is what we'd compute them to. | |
3586 | */ | |
3587 | for (level = 0; level <= max_level; level++) | |
3588 | active->wm[level].enable = true; | |
3589 | } | |
3590 | } | |
3591 | ||
3592 | void ilk_wm_get_hw_state(struct drm_device *dev) | |
3593 | { | |
3594 | struct drm_i915_private *dev_priv = dev->dev_private; | |
820c1980 | 3595 | struct ilk_wm_values *hw = &dev_priv->wm.hw; |
243e6a44 VS |
3596 | struct drm_crtc *crtc; |
3597 | ||
70e1e0ec | 3598 | for_each_crtc(dev, crtc) |
243e6a44 VS |
3599 | ilk_pipe_wm_get_hw_state(crtc); |
3600 | ||
3601 | hw->wm_lp[0] = I915_READ(WM1_LP_ILK); | |
3602 | hw->wm_lp[1] = I915_READ(WM2_LP_ILK); | |
3603 | hw->wm_lp[2] = I915_READ(WM3_LP_ILK); | |
3604 | ||
3605 | hw->wm_lp_spr[0] = I915_READ(WM1S_LP_ILK); | |
cfa7698b VS |
3606 | if (INTEL_INFO(dev)->gen >= 7) { |
3607 | hw->wm_lp_spr[1] = I915_READ(WM2S_LP_IVB); | |
3608 | hw->wm_lp_spr[2] = I915_READ(WM3S_LP_IVB); | |
3609 | } | |
243e6a44 | 3610 | |
a42a5719 | 3611 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
ac9545fd VS |
3612 | hw->partitioning = (I915_READ(WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ? |
3613 | INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; | |
3614 | else if (IS_IVYBRIDGE(dev)) | |
3615 | hw->partitioning = (I915_READ(DISP_ARB_CTL2) & DISP_DATA_PARTITION_5_6) ? | |
3616 | INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; | |
243e6a44 VS |
3617 | |
3618 | hw->enable_fbc_wm = | |
3619 | !(I915_READ(DISP_ARB_CTL) & DISP_FBC_WM_DIS); | |
3620 | } | |
3621 | ||
b445e3b0 ED |
3622 | /** |
3623 | * intel_update_watermarks - update FIFO watermark values based on current modes | |
3624 | * | |
3625 | * Calculate watermark values for the various WM regs based on current mode | |
3626 | * and plane configuration. | |
3627 | * | |
3628 | * There are several cases to deal with here: | |
3629 | * - normal (i.e. non-self-refresh) | |
3630 | * - self-refresh (SR) mode | |
3631 | * - lines are large relative to FIFO size (buffer can hold up to 2) | |
3632 | * - lines are small relative to FIFO size (buffer can hold more than 2 | |
3633 | * lines), so need to account for TLB latency | |
3634 | * | |
3635 | * The normal calculation is: | |
3636 | * watermark = dotclock * bytes per pixel * latency | |
3637 | * where latency is platform & configuration dependent (we assume pessimal | |
3638 | * values here). | |
3639 | * | |
3640 | * The SR calculation is: | |
3641 | * watermark = (trunc(latency/line time)+1) * surface width * | |
3642 | * bytes per pixel | |
3643 | * where | |
3644 | * line time = htotal / dotclock | |
3645 | * surface width = hdisplay for normal plane and 64 for cursor | |
3646 | * and latency is assumed to be high, as above. | |
3647 | * | |
3648 | * The final value programmed to the register should always be rounded up, | |
3649 | * and include an extra 2 entries to account for clock crossings. | |
3650 | * | |
3651 | * We don't use the sprite, so we can ignore that. And on Crestline we have | |
3652 | * to set the non-SR watermarks to 8. | |
3653 | */ | |
46ba614c | 3654 | void intel_update_watermarks(struct drm_crtc *crtc) |
b445e3b0 | 3655 | { |
46ba614c | 3656 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; |
b445e3b0 ED |
3657 | |
3658 | if (dev_priv->display.update_wm) | |
46ba614c | 3659 | dev_priv->display.update_wm(crtc); |
b445e3b0 ED |
3660 | } |
3661 | ||
adf3d35e VS |
3662 | void intel_update_sprite_watermarks(struct drm_plane *plane, |
3663 | struct drm_crtc *crtc, | |
ed57cb8a DL |
3664 | uint32_t sprite_width, |
3665 | uint32_t sprite_height, | |
3666 | int pixel_size, | |
39db4a4d | 3667 | bool enabled, bool scaled) |
b445e3b0 | 3668 | { |
adf3d35e | 3669 | struct drm_i915_private *dev_priv = plane->dev->dev_private; |
b445e3b0 ED |
3670 | |
3671 | if (dev_priv->display.update_sprite_wm) | |
ed57cb8a DL |
3672 | dev_priv->display.update_sprite_wm(plane, crtc, |
3673 | sprite_width, sprite_height, | |
39db4a4d | 3674 | pixel_size, enabled, scaled); |
b445e3b0 ED |
3675 | } |
3676 | ||
9270388e DV |
3677 | /** |
3678 | * Lock protecting IPS related data structures | |
9270388e DV |
3679 | */ |
3680 | DEFINE_SPINLOCK(mchdev_lock); | |
3681 | ||
3682 | /* Global for IPS driver to get at the current i915 device. Protected by | |
3683 | * mchdev_lock. */ | |
3684 | static struct drm_i915_private *i915_mch_dev; | |
3685 | ||
2b4e57bd ED |
3686 | bool ironlake_set_drps(struct drm_device *dev, u8 val) |
3687 | { | |
3688 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3689 | u16 rgvswctl; | |
3690 | ||
9270388e DV |
3691 | assert_spin_locked(&mchdev_lock); |
3692 | ||
2b4e57bd ED |
3693 | rgvswctl = I915_READ16(MEMSWCTL); |
3694 | if (rgvswctl & MEMCTL_CMD_STS) { | |
3695 | DRM_DEBUG("gpu busy, RCS change rejected\n"); | |
3696 | return false; /* still busy with another command */ | |
3697 | } | |
3698 | ||
3699 | rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | | |
3700 | (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; | |
3701 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
3702 | POSTING_READ16(MEMSWCTL); | |
3703 | ||
3704 | rgvswctl |= MEMCTL_CMD_STS; | |
3705 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
3706 | ||
3707 | return true; | |
3708 | } | |
3709 | ||
8090c6b9 | 3710 | static void ironlake_enable_drps(struct drm_device *dev) |
2b4e57bd ED |
3711 | { |
3712 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3713 | u32 rgvmodectl = I915_READ(MEMMODECTL); | |
3714 | u8 fmax, fmin, fstart, vstart; | |
3715 | ||
9270388e DV |
3716 | spin_lock_irq(&mchdev_lock); |
3717 | ||
2b4e57bd ED |
3718 | /* Enable temp reporting */ |
3719 | I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN); | |
3720 | I915_WRITE16(TSC1, I915_READ(TSC1) | TSE); | |
3721 | ||
3722 | /* 100ms RC evaluation intervals */ | |
3723 | I915_WRITE(RCUPEI, 100000); | |
3724 | I915_WRITE(RCDNEI, 100000); | |
3725 | ||
3726 | /* Set max/min thresholds to 90ms and 80ms respectively */ | |
3727 | I915_WRITE(RCBMAXAVG, 90000); | |
3728 | I915_WRITE(RCBMINAVG, 80000); | |
3729 | ||
3730 | I915_WRITE(MEMIHYST, 1); | |
3731 | ||
3732 | /* Set up min, max, and cur for interrupt handling */ | |
3733 | fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT; | |
3734 | fmin = (rgvmodectl & MEMMODE_FMIN_MASK); | |
3735 | fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >> | |
3736 | MEMMODE_FSTART_SHIFT; | |
3737 | ||
3738 | vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >> | |
3739 | PXVFREQ_PX_SHIFT; | |
3740 | ||
20e4d407 DV |
3741 | dev_priv->ips.fmax = fmax; /* IPS callback will increase this */ |
3742 | dev_priv->ips.fstart = fstart; | |
2b4e57bd | 3743 | |
20e4d407 DV |
3744 | dev_priv->ips.max_delay = fstart; |
3745 | dev_priv->ips.min_delay = fmin; | |
3746 | dev_priv->ips.cur_delay = fstart; | |
2b4e57bd ED |
3747 | |
3748 | DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n", | |
3749 | fmax, fmin, fstart); | |
3750 | ||
3751 | I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN); | |
3752 | ||
3753 | /* | |
3754 | * Interrupts will be enabled in ironlake_irq_postinstall | |
3755 | */ | |
3756 | ||
3757 | I915_WRITE(VIDSTART, vstart); | |
3758 | POSTING_READ(VIDSTART); | |
3759 | ||
3760 | rgvmodectl |= MEMMODE_SWMODE_EN; | |
3761 | I915_WRITE(MEMMODECTL, rgvmodectl); | |
3762 | ||
9270388e | 3763 | if (wait_for_atomic((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10)) |
2b4e57bd | 3764 | DRM_ERROR("stuck trying to change perf mode\n"); |
9270388e | 3765 | mdelay(1); |
2b4e57bd ED |
3766 | |
3767 | ironlake_set_drps(dev, fstart); | |
3768 | ||
20e4d407 | 3769 | dev_priv->ips.last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) + |
2b4e57bd | 3770 | I915_READ(0x112e0); |
20e4d407 DV |
3771 | dev_priv->ips.last_time1 = jiffies_to_msecs(jiffies); |
3772 | dev_priv->ips.last_count2 = I915_READ(0x112f4); | |
5ed0bdf2 | 3773 | dev_priv->ips.last_time2 = ktime_get_raw_ns(); |
9270388e DV |
3774 | |
3775 | spin_unlock_irq(&mchdev_lock); | |
2b4e57bd ED |
3776 | } |
3777 | ||
8090c6b9 | 3778 | static void ironlake_disable_drps(struct drm_device *dev) |
2b4e57bd ED |
3779 | { |
3780 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9270388e DV |
3781 | u16 rgvswctl; |
3782 | ||
3783 | spin_lock_irq(&mchdev_lock); | |
3784 | ||
3785 | rgvswctl = I915_READ16(MEMSWCTL); | |
2b4e57bd ED |
3786 | |
3787 | /* Ack interrupts, disable EFC interrupt */ | |
3788 | I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN); | |
3789 | I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG); | |
3790 | I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT); | |
3791 | I915_WRITE(DEIIR, DE_PCU_EVENT); | |
3792 | I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT); | |
3793 | ||
3794 | /* Go back to the starting frequency */ | |
20e4d407 | 3795 | ironlake_set_drps(dev, dev_priv->ips.fstart); |
9270388e | 3796 | mdelay(1); |
2b4e57bd ED |
3797 | rgvswctl |= MEMCTL_CMD_STS; |
3798 | I915_WRITE(MEMSWCTL, rgvswctl); | |
9270388e | 3799 | mdelay(1); |
2b4e57bd | 3800 | |
9270388e | 3801 | spin_unlock_irq(&mchdev_lock); |
2b4e57bd ED |
3802 | } |
3803 | ||
acbe9475 DV |
3804 | /* There's a funny hw issue where the hw returns all 0 when reading from |
3805 | * GEN6_RP_INTERRUPT_LIMITS. Hence we always need to compute the desired value | |
3806 | * ourselves, instead of doing a rmw cycle (which might result in us clearing | |
3807 | * all limits and the gpu stuck at whatever frequency it is at atm). | |
3808 | */ | |
74ef1173 | 3809 | static u32 intel_rps_limits(struct drm_i915_private *dev_priv, u8 val) |
2b4e57bd | 3810 | { |
7b9e0ae6 | 3811 | u32 limits; |
2b4e57bd | 3812 | |
20b46e59 DV |
3813 | /* Only set the down limit when we've reached the lowest level to avoid |
3814 | * getting more interrupts, otherwise leave this clear. This prevents a | |
3815 | * race in the hw when coming out of rc6: There's a tiny window where | |
3816 | * the hw runs at the minimal clock before selecting the desired | |
3817 | * frequency, if the down threshold expires in that window we will not | |
3818 | * receive a down interrupt. */ | |
74ef1173 AG |
3819 | if (IS_GEN9(dev_priv->dev)) { |
3820 | limits = (dev_priv->rps.max_freq_softlimit) << 23; | |
3821 | if (val <= dev_priv->rps.min_freq_softlimit) | |
3822 | limits |= (dev_priv->rps.min_freq_softlimit) << 14; | |
3823 | } else { | |
3824 | limits = dev_priv->rps.max_freq_softlimit << 24; | |
3825 | if (val <= dev_priv->rps.min_freq_softlimit) | |
3826 | limits |= dev_priv->rps.min_freq_softlimit << 16; | |
3827 | } | |
20b46e59 DV |
3828 | |
3829 | return limits; | |
3830 | } | |
3831 | ||
dd75fdc8 CW |
3832 | static void gen6_set_rps_thresholds(struct drm_i915_private *dev_priv, u8 val) |
3833 | { | |
3834 | int new_power; | |
8a586437 AG |
3835 | u32 threshold_up = 0, threshold_down = 0; /* in % */ |
3836 | u32 ei_up = 0, ei_down = 0; | |
dd75fdc8 CW |
3837 | |
3838 | new_power = dev_priv->rps.power; | |
3839 | switch (dev_priv->rps.power) { | |
3840 | case LOW_POWER: | |
b39fb297 | 3841 | if (val > dev_priv->rps.efficient_freq + 1 && val > dev_priv->rps.cur_freq) |
dd75fdc8 CW |
3842 | new_power = BETWEEN; |
3843 | break; | |
3844 | ||
3845 | case BETWEEN: | |
b39fb297 | 3846 | if (val <= dev_priv->rps.efficient_freq && val < dev_priv->rps.cur_freq) |
dd75fdc8 | 3847 | new_power = LOW_POWER; |
b39fb297 | 3848 | else if (val >= dev_priv->rps.rp0_freq && val > dev_priv->rps.cur_freq) |
dd75fdc8 CW |
3849 | new_power = HIGH_POWER; |
3850 | break; | |
3851 | ||
3852 | case HIGH_POWER: | |
b39fb297 | 3853 | if (val < (dev_priv->rps.rp1_freq + dev_priv->rps.rp0_freq) >> 1 && val < dev_priv->rps.cur_freq) |
dd75fdc8 CW |
3854 | new_power = BETWEEN; |
3855 | break; | |
3856 | } | |
3857 | /* Max/min bins are special */ | |
aed242ff | 3858 | if (val <= dev_priv->rps.min_freq_softlimit) |
dd75fdc8 | 3859 | new_power = LOW_POWER; |
aed242ff | 3860 | if (val >= dev_priv->rps.max_freq_softlimit) |
dd75fdc8 CW |
3861 | new_power = HIGH_POWER; |
3862 | if (new_power == dev_priv->rps.power) | |
3863 | return; | |
3864 | ||
3865 | /* Note the units here are not exactly 1us, but 1280ns. */ | |
3866 | switch (new_power) { | |
3867 | case LOW_POWER: | |
3868 | /* Upclock if more than 95% busy over 16ms */ | |
8a586437 AG |
3869 | ei_up = 16000; |
3870 | threshold_up = 95; | |
dd75fdc8 CW |
3871 | |
3872 | /* Downclock if less than 85% busy over 32ms */ | |
8a586437 AG |
3873 | ei_down = 32000; |
3874 | threshold_down = 85; | |
dd75fdc8 CW |
3875 | break; |
3876 | ||
3877 | case BETWEEN: | |
3878 | /* Upclock if more than 90% busy over 13ms */ | |
8a586437 AG |
3879 | ei_up = 13000; |
3880 | threshold_up = 90; | |
dd75fdc8 CW |
3881 | |
3882 | /* Downclock if less than 75% busy over 32ms */ | |
8a586437 AG |
3883 | ei_down = 32000; |
3884 | threshold_down = 75; | |
dd75fdc8 CW |
3885 | break; |
3886 | ||
3887 | case HIGH_POWER: | |
3888 | /* Upclock if more than 85% busy over 10ms */ | |
8a586437 AG |
3889 | ei_up = 10000; |
3890 | threshold_up = 85; | |
dd75fdc8 CW |
3891 | |
3892 | /* Downclock if less than 60% busy over 32ms */ | |
8a586437 AG |
3893 | ei_down = 32000; |
3894 | threshold_down = 60; | |
dd75fdc8 CW |
3895 | break; |
3896 | } | |
3897 | ||
8a586437 AG |
3898 | I915_WRITE(GEN6_RP_UP_EI, |
3899 | GT_INTERVAL_FROM_US(dev_priv, ei_up)); | |
3900 | I915_WRITE(GEN6_RP_UP_THRESHOLD, | |
3901 | GT_INTERVAL_FROM_US(dev_priv, (ei_up * threshold_up / 100))); | |
3902 | ||
3903 | I915_WRITE(GEN6_RP_DOWN_EI, | |
3904 | GT_INTERVAL_FROM_US(dev_priv, ei_down)); | |
3905 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, | |
3906 | GT_INTERVAL_FROM_US(dev_priv, (ei_down * threshold_down / 100))); | |
3907 | ||
3908 | I915_WRITE(GEN6_RP_CONTROL, | |
3909 | GEN6_RP_MEDIA_TURBO | | |
3910 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
3911 | GEN6_RP_MEDIA_IS_GFX | | |
3912 | GEN6_RP_ENABLE | | |
3913 | GEN6_RP_UP_BUSY_AVG | | |
3914 | GEN6_RP_DOWN_IDLE_AVG); | |
3915 | ||
dd75fdc8 CW |
3916 | dev_priv->rps.power = new_power; |
3917 | dev_priv->rps.last_adj = 0; | |
3918 | } | |
3919 | ||
2876ce73 CW |
3920 | static u32 gen6_rps_pm_mask(struct drm_i915_private *dev_priv, u8 val) |
3921 | { | |
3922 | u32 mask = 0; | |
3923 | ||
3924 | if (val > dev_priv->rps.min_freq_softlimit) | |
3925 | mask |= GEN6_PM_RP_DOWN_THRESHOLD | GEN6_PM_RP_DOWN_TIMEOUT; | |
3926 | if (val < dev_priv->rps.max_freq_softlimit) | |
3927 | mask |= GEN6_PM_RP_UP_THRESHOLD; | |
3928 | ||
7b3c29f6 CW |
3929 | mask |= dev_priv->pm_rps_events & (GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED); |
3930 | mask &= dev_priv->pm_rps_events; | |
3931 | ||
59d02a1f | 3932 | return gen6_sanitize_rps_pm_mask(dev_priv, ~mask); |
2876ce73 CW |
3933 | } |
3934 | ||
b8a5ff8d JM |
3935 | /* gen6_set_rps is called to update the frequency request, but should also be |
3936 | * called when the range (min_delay and max_delay) is modified so that we can | |
3937 | * update the GEN6_RP_INTERRUPT_LIMITS register accordingly. */ | |
ffe02b40 | 3938 | static void gen6_set_rps(struct drm_device *dev, u8 val) |
20b46e59 DV |
3939 | { |
3940 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7b9e0ae6 | 3941 | |
4fc688ce | 3942 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
aed242ff CW |
3943 | WARN_ON(val > dev_priv->rps.max_freq); |
3944 | WARN_ON(val < dev_priv->rps.min_freq); | |
004777cb | 3945 | |
eb64cad1 CW |
3946 | /* min/max delay may still have been modified so be sure to |
3947 | * write the limits value. | |
3948 | */ | |
3949 | if (val != dev_priv->rps.cur_freq) { | |
3950 | gen6_set_rps_thresholds(dev_priv, val); | |
b8a5ff8d | 3951 | |
5704195c AG |
3952 | if (IS_GEN9(dev)) |
3953 | I915_WRITE(GEN6_RPNSWREQ, | |
3954 | GEN9_FREQUENCY(val)); | |
3955 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
eb64cad1 CW |
3956 | I915_WRITE(GEN6_RPNSWREQ, |
3957 | HSW_FREQUENCY(val)); | |
3958 | else | |
3959 | I915_WRITE(GEN6_RPNSWREQ, | |
3960 | GEN6_FREQUENCY(val) | | |
3961 | GEN6_OFFSET(0) | | |
3962 | GEN6_AGGRESSIVE_TURBO); | |
b8a5ff8d | 3963 | } |
7b9e0ae6 | 3964 | |
7b9e0ae6 CW |
3965 | /* Make sure we continue to get interrupts |
3966 | * until we hit the minimum or maximum frequencies. | |
3967 | */ | |
74ef1173 | 3968 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, intel_rps_limits(dev_priv, val)); |
2876ce73 | 3969 | I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val)); |
7b9e0ae6 | 3970 | |
d5570a72 BW |
3971 | POSTING_READ(GEN6_RPNSWREQ); |
3972 | ||
b39fb297 | 3973 | dev_priv->rps.cur_freq = val; |
be2cde9a | 3974 | trace_intel_gpu_freq_change(val * 50); |
2b4e57bd ED |
3975 | } |
3976 | ||
ffe02b40 VS |
3977 | static void valleyview_set_rps(struct drm_device *dev, u8 val) |
3978 | { | |
3979 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3980 | ||
3981 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
aed242ff CW |
3982 | WARN_ON(val > dev_priv->rps.max_freq); |
3983 | WARN_ON(val < dev_priv->rps.min_freq); | |
ffe02b40 VS |
3984 | |
3985 | if (WARN_ONCE(IS_CHERRYVIEW(dev) && (val & 1), | |
3986 | "Odd GPU freq value\n")) | |
3987 | val &= ~1; | |
3988 | ||
3989 | if (val != dev_priv->rps.cur_freq) | |
3990 | vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val); | |
3991 | ||
3992 | I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val)); | |
3993 | ||
3994 | dev_priv->rps.cur_freq = val; | |
3995 | trace_intel_gpu_freq_change(intel_gpu_freq(dev_priv, val)); | |
3996 | } | |
3997 | ||
76c3552f D |
3998 | /* vlv_set_rps_idle: Set the frequency to Rpn if Gfx clocks are down |
3999 | * | |
4000 | * * If Gfx is Idle, then | |
4001 | * 1. Mask Turbo interrupts | |
4002 | * 2. Bring up Gfx clock | |
4003 | * 3. Change the freq to Rpn and wait till P-Unit updates freq | |
4004 | * 4. Clear the Force GFX CLK ON bit so that Gfx can down | |
4005 | * 5. Unmask Turbo interrupts | |
4006 | */ | |
4007 | static void vlv_set_rps_idle(struct drm_i915_private *dev_priv) | |
4008 | { | |
5549d25f | 4009 | struct drm_device *dev = dev_priv->dev; |
aed242ff | 4010 | u32 val = dev_priv->rps.idle_freq; |
5549d25f | 4011 | |
21a11fff VS |
4012 | /* CHV and latest VLV don't need to force the gfx clock */ |
4013 | if (IS_CHERRYVIEW(dev) || dev->pdev->revision >= 0xd) { | |
aed242ff | 4014 | valleyview_set_rps(dev_priv->dev, val); |
5549d25f D |
4015 | return; |
4016 | } | |
4017 | ||
76c3552f D |
4018 | /* |
4019 | * When we are idle. Drop to min voltage state. | |
4020 | */ | |
4021 | ||
aed242ff | 4022 | if (dev_priv->rps.cur_freq <= val) |
76c3552f D |
4023 | return; |
4024 | ||
4025 | /* Mask turbo interrupt so that they will not come in between */ | |
f24eeb19 ID |
4026 | I915_WRITE(GEN6_PMINTRMSK, |
4027 | gen6_sanitize_rps_pm_mask(dev_priv, ~0)); | |
76c3552f | 4028 | |
650ad970 | 4029 | vlv_force_gfx_clock(dev_priv, true); |
76c3552f | 4030 | |
aed242ff | 4031 | dev_priv->rps.cur_freq = val; |
76c3552f | 4032 | |
aed242ff | 4033 | vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val); |
76c3552f D |
4034 | |
4035 | if (wait_for(((vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS)) | |
2837ac40 | 4036 | & GENFREQSTATUS) == 0, 100)) |
76c3552f D |
4037 | DRM_ERROR("timed out waiting for Punit\n"); |
4038 | ||
650ad970 | 4039 | vlv_force_gfx_clock(dev_priv, false); |
76c3552f | 4040 | |
aed242ff | 4041 | I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val)); |
76c3552f D |
4042 | } |
4043 | ||
43cf3bf0 CW |
4044 | void gen6_rps_busy(struct drm_i915_private *dev_priv) |
4045 | { | |
4046 | mutex_lock(&dev_priv->rps.hw_lock); | |
4047 | if (dev_priv->rps.enabled) { | |
4048 | if (dev_priv->pm_rps_events & (GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED)) | |
4049 | gen6_rps_reset_ei(dev_priv); | |
4050 | I915_WRITE(GEN6_PMINTRMSK, | |
4051 | gen6_rps_pm_mask(dev_priv, dev_priv->rps.cur_freq)); | |
4052 | } | |
4053 | mutex_unlock(&dev_priv->rps.hw_lock); | |
4054 | } | |
4055 | ||
b29c19b6 CW |
4056 | void gen6_rps_idle(struct drm_i915_private *dev_priv) |
4057 | { | |
691bb717 DL |
4058 | struct drm_device *dev = dev_priv->dev; |
4059 | ||
b29c19b6 | 4060 | mutex_lock(&dev_priv->rps.hw_lock); |
c0951f0c | 4061 | if (dev_priv->rps.enabled) { |
21a11fff | 4062 | if (IS_VALLEYVIEW(dev)) |
76c3552f | 4063 | vlv_set_rps_idle(dev_priv); |
7526ed79 | 4064 | else |
aed242ff | 4065 | gen6_set_rps(dev_priv->dev, dev_priv->rps.idle_freq); |
c0951f0c | 4066 | dev_priv->rps.last_adj = 0; |
43cf3bf0 | 4067 | I915_WRITE(GEN6_PMINTRMSK, 0xffffffff); |
c0951f0c | 4068 | } |
b29c19b6 CW |
4069 | mutex_unlock(&dev_priv->rps.hw_lock); |
4070 | } | |
4071 | ||
4072 | void gen6_rps_boost(struct drm_i915_private *dev_priv) | |
4073 | { | |
43cf3bf0 CW |
4074 | u32 val; |
4075 | ||
b29c19b6 | 4076 | mutex_lock(&dev_priv->rps.hw_lock); |
43cf3bf0 CW |
4077 | val = dev_priv->rps.max_freq_softlimit; |
4078 | if (dev_priv->rps.enabled && | |
4079 | dev_priv->mm.busy && | |
4080 | dev_priv->rps.cur_freq < val) { | |
4081 | intel_set_rps(dev_priv->dev, val); | |
c0951f0c CW |
4082 | dev_priv->rps.last_adj = 0; |
4083 | } | |
b29c19b6 CW |
4084 | mutex_unlock(&dev_priv->rps.hw_lock); |
4085 | } | |
4086 | ||
ffe02b40 | 4087 | void intel_set_rps(struct drm_device *dev, u8 val) |
0a073b84 | 4088 | { |
ffe02b40 VS |
4089 | if (IS_VALLEYVIEW(dev)) |
4090 | valleyview_set_rps(dev, val); | |
4091 | else | |
4092 | gen6_set_rps(dev, val); | |
0a073b84 JB |
4093 | } |
4094 | ||
20e49366 ZW |
4095 | static void gen9_disable_rps(struct drm_device *dev) |
4096 | { | |
4097 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4098 | ||
4099 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
38c23527 | 4100 | I915_WRITE(GEN9_PG_ENABLE, 0); |
20e49366 ZW |
4101 | } |
4102 | ||
44fc7d5c | 4103 | static void gen6_disable_rps(struct drm_device *dev) |
d20d4f0c JB |
4104 | { |
4105 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4106 | ||
4107 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
44fc7d5c | 4108 | I915_WRITE(GEN6_RPNSWREQ, 1 << 31); |
44fc7d5c DV |
4109 | } |
4110 | ||
38807746 D |
4111 | static void cherryview_disable_rps(struct drm_device *dev) |
4112 | { | |
4113 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4114 | ||
4115 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
4116 | } | |
4117 | ||
44fc7d5c DV |
4118 | static void valleyview_disable_rps(struct drm_device *dev) |
4119 | { | |
4120 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4121 | ||
98a2e5f9 D |
4122 | /* we're doing forcewake before Disabling RC6, |
4123 | * This what the BIOS expects when going into suspend */ | |
59bad947 | 4124 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
98a2e5f9 | 4125 | |
44fc7d5c | 4126 | I915_WRITE(GEN6_RC_CONTROL, 0); |
d20d4f0c | 4127 | |
59bad947 | 4128 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
d20d4f0c JB |
4129 | } |
4130 | ||
dc39fff7 BW |
4131 | static void intel_print_rc6_info(struct drm_device *dev, u32 mode) |
4132 | { | |
91ca689a ID |
4133 | if (IS_VALLEYVIEW(dev)) { |
4134 | if (mode & (GEN7_RC_CTL_TO_MODE | GEN6_RC_CTL_EI_MODE(1))) | |
4135 | mode = GEN6_RC_CTL_RC6_ENABLE; | |
4136 | else | |
4137 | mode = 0; | |
4138 | } | |
58abf1da RV |
4139 | if (HAS_RC6p(dev)) |
4140 | DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s RC6p %s RC6pp %s\n", | |
4141 | (mode & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off", | |
4142 | (mode & GEN6_RC_CTL_RC6p_ENABLE) ? "on" : "off", | |
4143 | (mode & GEN6_RC_CTL_RC6pp_ENABLE) ? "on" : "off"); | |
4144 | ||
4145 | else | |
4146 | DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s\n", | |
4147 | (mode & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off"); | |
dc39fff7 BW |
4148 | } |
4149 | ||
e6069ca8 | 4150 | static int sanitize_rc6_option(const struct drm_device *dev, int enable_rc6) |
2b4e57bd | 4151 | { |
eb4926e4 DL |
4152 | /* No RC6 before Ironlake */ |
4153 | if (INTEL_INFO(dev)->gen < 5) | |
4154 | return 0; | |
4155 | ||
e6069ca8 ID |
4156 | /* RC6 is only on Ironlake mobile not on desktop */ |
4157 | if (INTEL_INFO(dev)->gen == 5 && !IS_IRONLAKE_M(dev)) | |
4158 | return 0; | |
4159 | ||
456470eb | 4160 | /* Respect the kernel parameter if it is set */ |
e6069ca8 ID |
4161 | if (enable_rc6 >= 0) { |
4162 | int mask; | |
4163 | ||
58abf1da | 4164 | if (HAS_RC6p(dev)) |
e6069ca8 ID |
4165 | mask = INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE | |
4166 | INTEL_RC6pp_ENABLE; | |
4167 | else | |
4168 | mask = INTEL_RC6_ENABLE; | |
4169 | ||
4170 | if ((enable_rc6 & mask) != enable_rc6) | |
8dfd1f04 DV |
4171 | DRM_DEBUG_KMS("Adjusting RC6 mask to %d (requested %d, valid %d)\n", |
4172 | enable_rc6 & mask, enable_rc6, mask); | |
e6069ca8 ID |
4173 | |
4174 | return enable_rc6 & mask; | |
4175 | } | |
2b4e57bd | 4176 | |
6567d748 CW |
4177 | /* Disable RC6 on Ironlake */ |
4178 | if (INTEL_INFO(dev)->gen == 5) | |
4179 | return 0; | |
2b4e57bd | 4180 | |
8bade1ad | 4181 | if (IS_IVYBRIDGE(dev)) |
cca84a1f | 4182 | return (INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE); |
8bade1ad BW |
4183 | |
4184 | return INTEL_RC6_ENABLE; | |
2b4e57bd ED |
4185 | } |
4186 | ||
e6069ca8 ID |
4187 | int intel_enable_rc6(const struct drm_device *dev) |
4188 | { | |
4189 | return i915.enable_rc6; | |
4190 | } | |
4191 | ||
93ee2920 | 4192 | static void gen6_init_rps_frequencies(struct drm_device *dev) |
3280e8b0 | 4193 | { |
93ee2920 TR |
4194 | struct drm_i915_private *dev_priv = dev->dev_private; |
4195 | uint32_t rp_state_cap; | |
4196 | u32 ddcc_status = 0; | |
4197 | int ret; | |
4198 | ||
4199 | rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); | |
3280e8b0 BW |
4200 | /* All of these values are in units of 50MHz */ |
4201 | dev_priv->rps.cur_freq = 0; | |
93ee2920 | 4202 | /* static values from HW: RP0 > RP1 > RPn (min_freq) */ |
3280e8b0 | 4203 | dev_priv->rps.rp0_freq = (rp_state_cap >> 0) & 0xff; |
93ee2920 | 4204 | dev_priv->rps.rp1_freq = (rp_state_cap >> 8) & 0xff; |
3280e8b0 | 4205 | dev_priv->rps.min_freq = (rp_state_cap >> 16) & 0xff; |
cee991cb AG |
4206 | if (IS_SKYLAKE(dev)) { |
4207 | /* Store the frequency values in 16.66 MHZ units, which is | |
4208 | the natural hardware unit for SKL */ | |
4209 | dev_priv->rps.rp0_freq *= GEN9_FREQ_SCALER; | |
4210 | dev_priv->rps.rp1_freq *= GEN9_FREQ_SCALER; | |
4211 | dev_priv->rps.min_freq *= GEN9_FREQ_SCALER; | |
4212 | } | |
3280e8b0 BW |
4213 | /* hw_max = RP0 until we check for overclocking */ |
4214 | dev_priv->rps.max_freq = dev_priv->rps.rp0_freq; | |
4215 | ||
93ee2920 TR |
4216 | dev_priv->rps.efficient_freq = dev_priv->rps.rp1_freq; |
4217 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
4218 | ret = sandybridge_pcode_read(dev_priv, | |
4219 | HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL, | |
4220 | &ddcc_status); | |
4221 | if (0 == ret) | |
4222 | dev_priv->rps.efficient_freq = | |
46efa4ab TR |
4223 | clamp_t(u8, |
4224 | ((ddcc_status >> 8) & 0xff), | |
4225 | dev_priv->rps.min_freq, | |
4226 | dev_priv->rps.max_freq); | |
93ee2920 TR |
4227 | } |
4228 | ||
aed242ff CW |
4229 | dev_priv->rps.idle_freq = dev_priv->rps.min_freq; |
4230 | ||
3280e8b0 BW |
4231 | /* Preserve min/max settings in case of re-init */ |
4232 | if (dev_priv->rps.max_freq_softlimit == 0) | |
4233 | dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; | |
4234 | ||
93ee2920 TR |
4235 | if (dev_priv->rps.min_freq_softlimit == 0) { |
4236 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
4237 | dev_priv->rps.min_freq_softlimit = | |
f4ab408c TR |
4238 | /* max(RPe, 450 MHz) */ |
4239 | max(dev_priv->rps.efficient_freq, (u8) 9); | |
93ee2920 TR |
4240 | else |
4241 | dev_priv->rps.min_freq_softlimit = | |
4242 | dev_priv->rps.min_freq; | |
4243 | } | |
3280e8b0 BW |
4244 | } |
4245 | ||
b6fef0ef | 4246 | /* See the Gen9_GT_PM_Programming_Guide doc for the below */ |
20e49366 | 4247 | static void gen9_enable_rps(struct drm_device *dev) |
b6fef0ef JB |
4248 | { |
4249 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4250 | ||
4251 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); | |
4252 | ||
ba1c554c DL |
4253 | gen6_init_rps_frequencies(dev); |
4254 | ||
0beb059a AG |
4255 | /* Program defaults and thresholds for RPS*/ |
4256 | I915_WRITE(GEN6_RC_VIDEO_FREQ, | |
4257 | GEN9_FREQUENCY(dev_priv->rps.rp1_freq)); | |
4258 | ||
4259 | /* 1 second timeout*/ | |
4260 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, | |
4261 | GT_INTERVAL_FROM_US(dev_priv, 1000000)); | |
4262 | ||
b6fef0ef | 4263 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 0xa); |
b6fef0ef | 4264 | |
0beb059a AG |
4265 | /* Leaning on the below call to gen6_set_rps to program/setup the |
4266 | * Up/Down EI & threshold registers, as well as the RP_CONTROL, | |
4267 | * RP_INTERRUPT_LIMITS & RPNSWREQ registers */ | |
4268 | dev_priv->rps.power = HIGH_POWER; /* force a reset */ | |
4269 | gen6_set_rps(dev_priv->dev, dev_priv->rps.min_freq_softlimit); | |
b6fef0ef JB |
4270 | |
4271 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); | |
4272 | } | |
4273 | ||
4274 | static void gen9_enable_rc6(struct drm_device *dev) | |
20e49366 ZW |
4275 | { |
4276 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4277 | struct intel_engine_cs *ring; | |
4278 | uint32_t rc6_mask = 0; | |
4279 | int unused; | |
4280 | ||
4281 | /* 1a: Software RC state - RC0 */ | |
4282 | I915_WRITE(GEN6_RC_STATE, 0); | |
4283 | ||
4284 | /* 1b: Get forcewake during program sequence. Although the driver | |
4285 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 4286 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
20e49366 ZW |
4287 | |
4288 | /* 2a: Disable RC states. */ | |
4289 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
4290 | ||
4291 | /* 2b: Program RC6 thresholds.*/ | |
4292 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16); | |
4293 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ | |
4294 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
4295 | for_each_ring(ring, dev_priv, unused) | |
4296 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
4297 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
4298 | I915_WRITE(GEN6_RC6_THRESHOLD, 37500); /* 37.5/125ms per EI */ | |
4299 | ||
38c23527 ZW |
4300 | /* 2c: Program Coarse Power Gating Policies. */ |
4301 | I915_WRITE(GEN9_MEDIA_PG_IDLE_HYSTERESIS, 25); | |
4302 | I915_WRITE(GEN9_RENDER_PG_IDLE_HYSTERESIS, 25); | |
4303 | ||
20e49366 ZW |
4304 | /* 3a: Enable RC6 */ |
4305 | if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE) | |
4306 | rc6_mask = GEN6_RC_CTL_RC6_ENABLE; | |
4307 | DRM_INFO("RC6 %s\n", (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ? | |
4308 | "on" : "off"); | |
4309 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | | |
4310 | GEN6_RC_CTL_EI_MODE(1) | | |
4311 | rc6_mask); | |
4312 | ||
38c23527 ZW |
4313 | /* 3b: Enable Coarse Power Gating only when RC6 is enabled */ |
4314 | I915_WRITE(GEN9_PG_ENABLE, (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ? 3 : 0); | |
4315 | ||
59bad947 | 4316 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
20e49366 ZW |
4317 | |
4318 | } | |
4319 | ||
6edee7f3 BW |
4320 | static void gen8_enable_rps(struct drm_device *dev) |
4321 | { | |
4322 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4872ba6 | 4323 | struct intel_engine_cs *ring; |
93ee2920 | 4324 | uint32_t rc6_mask = 0; |
6edee7f3 BW |
4325 | int unused; |
4326 | ||
4327 | /* 1a: Software RC state - RC0 */ | |
4328 | I915_WRITE(GEN6_RC_STATE, 0); | |
4329 | ||
4330 | /* 1c & 1d: Get forcewake during program sequence. Although the driver | |
4331 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 4332 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
6edee7f3 BW |
4333 | |
4334 | /* 2a: Disable RC states. */ | |
4335 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
4336 | ||
93ee2920 TR |
4337 | /* Initialize rps frequencies */ |
4338 | gen6_init_rps_frequencies(dev); | |
6edee7f3 BW |
4339 | |
4340 | /* 2b: Program RC6 thresholds.*/ | |
4341 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16); | |
4342 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ | |
4343 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
4344 | for_each_ring(ring, dev_priv, unused) | |
4345 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
4346 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
0d68b25e TR |
4347 | if (IS_BROADWELL(dev)) |
4348 | I915_WRITE(GEN6_RC6_THRESHOLD, 625); /* 800us/1.28 for TO */ | |
4349 | else | |
4350 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); /* 50/125ms per EI */ | |
6edee7f3 BW |
4351 | |
4352 | /* 3: Enable RC6 */ | |
4353 | if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE) | |
4354 | rc6_mask = GEN6_RC_CTL_RC6_ENABLE; | |
abbf9d2c | 4355 | intel_print_rc6_info(dev, rc6_mask); |
0d68b25e TR |
4356 | if (IS_BROADWELL(dev)) |
4357 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | | |
4358 | GEN7_RC_CTL_TO_MODE | | |
4359 | rc6_mask); | |
4360 | else | |
4361 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | | |
4362 | GEN6_RC_CTL_EI_MODE(1) | | |
4363 | rc6_mask); | |
6edee7f3 BW |
4364 | |
4365 | /* 4 Program defaults and thresholds for RPS*/ | |
f9bdc585 BW |
4366 | I915_WRITE(GEN6_RPNSWREQ, |
4367 | HSW_FREQUENCY(dev_priv->rps.rp1_freq)); | |
4368 | I915_WRITE(GEN6_RC_VIDEO_FREQ, | |
4369 | HSW_FREQUENCY(dev_priv->rps.rp1_freq)); | |
7526ed79 DV |
4370 | /* NB: Docs say 1s, and 1000000 - which aren't equivalent */ |
4371 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 100000000 / 128); /* 1 second timeout */ | |
4372 | ||
4373 | /* Docs recommend 900MHz, and 300 MHz respectively */ | |
4374 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, | |
4375 | dev_priv->rps.max_freq_softlimit << 24 | | |
4376 | dev_priv->rps.min_freq_softlimit << 16); | |
4377 | ||
4378 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 7600000 / 128); /* 76ms busyness per EI, 90% */ | |
4379 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 31300000 / 128); /* 313ms busyness per EI, 70%*/ | |
4380 | I915_WRITE(GEN6_RP_UP_EI, 66000); /* 84.48ms, XXX: random? */ | |
4381 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); /* 448ms, XXX: random? */ | |
4382 | ||
4383 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
6edee7f3 BW |
4384 | |
4385 | /* 5: Enable RPS */ | |
7526ed79 DV |
4386 | I915_WRITE(GEN6_RP_CONTROL, |
4387 | GEN6_RP_MEDIA_TURBO | | |
4388 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
4389 | GEN6_RP_MEDIA_IS_GFX | | |
4390 | GEN6_RP_ENABLE | | |
4391 | GEN6_RP_UP_BUSY_AVG | | |
4392 | GEN6_RP_DOWN_IDLE_AVG); | |
4393 | ||
4394 | /* 6: Ring frequency + overclocking (our driver does this later */ | |
4395 | ||
c7f3153a | 4396 | dev_priv->rps.power = HIGH_POWER; /* force a reset */ |
aed242ff | 4397 | gen6_set_rps(dev_priv->dev, dev_priv->rps.idle_freq); |
7526ed79 | 4398 | |
59bad947 | 4399 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
6edee7f3 BW |
4400 | } |
4401 | ||
79f5b2c7 | 4402 | static void gen6_enable_rps(struct drm_device *dev) |
2b4e57bd | 4403 | { |
79f5b2c7 | 4404 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4872ba6 | 4405 | struct intel_engine_cs *ring; |
d060c169 | 4406 | u32 rc6vids, pcu_mbox = 0, rc6_mask = 0; |
2b4e57bd | 4407 | u32 gtfifodbg; |
2b4e57bd | 4408 | int rc6_mode; |
42c0526c | 4409 | int i, ret; |
2b4e57bd | 4410 | |
4fc688ce | 4411 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 4412 | |
2b4e57bd ED |
4413 | /* Here begins a magic sequence of register writes to enable |
4414 | * auto-downclocking. | |
4415 | * | |
4416 | * Perhaps there might be some value in exposing these to | |
4417 | * userspace... | |
4418 | */ | |
4419 | I915_WRITE(GEN6_RC_STATE, 0); | |
2b4e57bd ED |
4420 | |
4421 | /* Clear the DBG now so we don't confuse earlier errors */ | |
4422 | if ((gtfifodbg = I915_READ(GTFIFODBG))) { | |
4423 | DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg); | |
4424 | I915_WRITE(GTFIFODBG, gtfifodbg); | |
4425 | } | |
4426 | ||
59bad947 | 4427 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
2b4e57bd | 4428 | |
93ee2920 TR |
4429 | /* Initialize rps frequencies */ |
4430 | gen6_init_rps_frequencies(dev); | |
dd0a1aa1 | 4431 | |
2b4e57bd ED |
4432 | /* disable the counters and set deterministic thresholds */ |
4433 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
4434 | ||
4435 | I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16); | |
4436 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30); | |
4437 | I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30); | |
4438 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
4439 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
4440 | ||
b4519513 CW |
4441 | for_each_ring(ring, dev_priv, i) |
4442 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
2b4e57bd ED |
4443 | |
4444 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
4445 | I915_WRITE(GEN6_RC1e_THRESHOLD, 1000); | |
29c78f60 | 4446 | if (IS_IVYBRIDGE(dev)) |
351aa566 SM |
4447 | I915_WRITE(GEN6_RC6_THRESHOLD, 125000); |
4448 | else | |
4449 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); | |
0920a487 | 4450 | I915_WRITE(GEN6_RC6p_THRESHOLD, 150000); |
2b4e57bd ED |
4451 | I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */ |
4452 | ||
5a7dc92a | 4453 | /* Check if we are enabling RC6 */ |
2b4e57bd ED |
4454 | rc6_mode = intel_enable_rc6(dev_priv->dev); |
4455 | if (rc6_mode & INTEL_RC6_ENABLE) | |
4456 | rc6_mask |= GEN6_RC_CTL_RC6_ENABLE; | |
4457 | ||
5a7dc92a ED |
4458 | /* We don't use those on Haswell */ |
4459 | if (!IS_HASWELL(dev)) { | |
4460 | if (rc6_mode & INTEL_RC6p_ENABLE) | |
4461 | rc6_mask |= GEN6_RC_CTL_RC6p_ENABLE; | |
2b4e57bd | 4462 | |
5a7dc92a ED |
4463 | if (rc6_mode & INTEL_RC6pp_ENABLE) |
4464 | rc6_mask |= GEN6_RC_CTL_RC6pp_ENABLE; | |
4465 | } | |
2b4e57bd | 4466 | |
dc39fff7 | 4467 | intel_print_rc6_info(dev, rc6_mask); |
2b4e57bd ED |
4468 | |
4469 | I915_WRITE(GEN6_RC_CONTROL, | |
4470 | rc6_mask | | |
4471 | GEN6_RC_CTL_EI_MODE(1) | | |
4472 | GEN6_RC_CTL_HW_ENABLE); | |
4473 | ||
dd75fdc8 CW |
4474 | /* Power down if completely idle for over 50ms */ |
4475 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 50000); | |
2b4e57bd | 4476 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); |
2b4e57bd | 4477 | |
42c0526c | 4478 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_MIN_FREQ_TABLE, 0); |
d060c169 | 4479 | if (ret) |
42c0526c | 4480 | DRM_DEBUG_DRIVER("Failed to set the min frequency\n"); |
d060c169 BW |
4481 | |
4482 | ret = sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS, &pcu_mbox); | |
4483 | if (!ret && (pcu_mbox & (1<<31))) { /* OC supported */ | |
4484 | DRM_DEBUG_DRIVER("Overclocking supported. Max: %dMHz, Overclock max: %dMHz\n", | |
b39fb297 | 4485 | (dev_priv->rps.max_freq_softlimit & 0xff) * 50, |
d060c169 | 4486 | (pcu_mbox & 0xff) * 50); |
b39fb297 | 4487 | dev_priv->rps.max_freq = pcu_mbox & 0xff; |
2b4e57bd ED |
4488 | } |
4489 | ||
dd75fdc8 | 4490 | dev_priv->rps.power = HIGH_POWER; /* force a reset */ |
aed242ff | 4491 | gen6_set_rps(dev_priv->dev, dev_priv->rps.idle_freq); |
2b4e57bd | 4492 | |
31643d54 BW |
4493 | rc6vids = 0; |
4494 | ret = sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids); | |
4495 | if (IS_GEN6(dev) && ret) { | |
4496 | DRM_DEBUG_DRIVER("Couldn't check for BIOS workaround\n"); | |
4497 | } else if (IS_GEN6(dev) && (GEN6_DECODE_RC6_VID(rc6vids & 0xff) < 450)) { | |
4498 | DRM_DEBUG_DRIVER("You should update your BIOS. Correcting minimum rc6 voltage (%dmV->%dmV)\n", | |
4499 | GEN6_DECODE_RC6_VID(rc6vids & 0xff), 450); | |
4500 | rc6vids &= 0xffff00; | |
4501 | rc6vids |= GEN6_ENCODE_RC6_VID(450); | |
4502 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_RC6VIDS, rc6vids); | |
4503 | if (ret) | |
4504 | DRM_ERROR("Couldn't fix incorrect rc6 voltage\n"); | |
4505 | } | |
4506 | ||
59bad947 | 4507 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
2b4e57bd ED |
4508 | } |
4509 | ||
c2bc2fc5 | 4510 | static void __gen6_update_ring_freq(struct drm_device *dev) |
2b4e57bd | 4511 | { |
79f5b2c7 | 4512 | struct drm_i915_private *dev_priv = dev->dev_private; |
2b4e57bd | 4513 | int min_freq = 15; |
3ebecd07 CW |
4514 | unsigned int gpu_freq; |
4515 | unsigned int max_ia_freq, min_ring_freq; | |
2b4e57bd | 4516 | int scaling_factor = 180; |
eda79642 | 4517 | struct cpufreq_policy *policy; |
2b4e57bd | 4518 | |
4fc688ce | 4519 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 4520 | |
eda79642 BW |
4521 | policy = cpufreq_cpu_get(0); |
4522 | if (policy) { | |
4523 | max_ia_freq = policy->cpuinfo.max_freq; | |
4524 | cpufreq_cpu_put(policy); | |
4525 | } else { | |
4526 | /* | |
4527 | * Default to measured freq if none found, PCU will ensure we | |
4528 | * don't go over | |
4529 | */ | |
2b4e57bd | 4530 | max_ia_freq = tsc_khz; |
eda79642 | 4531 | } |
2b4e57bd ED |
4532 | |
4533 | /* Convert from kHz to MHz */ | |
4534 | max_ia_freq /= 1000; | |
4535 | ||
153b4b95 | 4536 | min_ring_freq = I915_READ(DCLK) & 0xf; |
f6aca45c BW |
4537 | /* convert DDR frequency from units of 266.6MHz to bandwidth */ |
4538 | min_ring_freq = mult_frac(min_ring_freq, 8, 3); | |
3ebecd07 | 4539 | |
2b4e57bd ED |
4540 | /* |
4541 | * For each potential GPU frequency, load a ring frequency we'd like | |
4542 | * to use for memory access. We do this by specifying the IA frequency | |
4543 | * the PCU should use as a reference to determine the ring frequency. | |
4544 | */ | |
6985b352 | 4545 | for (gpu_freq = dev_priv->rps.max_freq; gpu_freq >= dev_priv->rps.min_freq; |
2b4e57bd | 4546 | gpu_freq--) { |
6985b352 | 4547 | int diff = dev_priv->rps.max_freq - gpu_freq; |
3ebecd07 CW |
4548 | unsigned int ia_freq = 0, ring_freq = 0; |
4549 | ||
46c764d4 BW |
4550 | if (INTEL_INFO(dev)->gen >= 8) { |
4551 | /* max(2 * GT, DDR). NB: GT is 50MHz units */ | |
4552 | ring_freq = max(min_ring_freq, gpu_freq); | |
4553 | } else if (IS_HASWELL(dev)) { | |
f6aca45c | 4554 | ring_freq = mult_frac(gpu_freq, 5, 4); |
3ebecd07 CW |
4555 | ring_freq = max(min_ring_freq, ring_freq); |
4556 | /* leave ia_freq as the default, chosen by cpufreq */ | |
4557 | } else { | |
4558 | /* On older processors, there is no separate ring | |
4559 | * clock domain, so in order to boost the bandwidth | |
4560 | * of the ring, we need to upclock the CPU (ia_freq). | |
4561 | * | |
4562 | * For GPU frequencies less than 750MHz, | |
4563 | * just use the lowest ring freq. | |
4564 | */ | |
4565 | if (gpu_freq < min_freq) | |
4566 | ia_freq = 800; | |
4567 | else | |
4568 | ia_freq = max_ia_freq - ((diff * scaling_factor) / 2); | |
4569 | ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100); | |
4570 | } | |
2b4e57bd | 4571 | |
42c0526c BW |
4572 | sandybridge_pcode_write(dev_priv, |
4573 | GEN6_PCODE_WRITE_MIN_FREQ_TABLE, | |
3ebecd07 CW |
4574 | ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT | |
4575 | ring_freq << GEN6_PCODE_FREQ_RING_RATIO_SHIFT | | |
4576 | gpu_freq); | |
2b4e57bd | 4577 | } |
2b4e57bd ED |
4578 | } |
4579 | ||
c2bc2fc5 ID |
4580 | void gen6_update_ring_freq(struct drm_device *dev) |
4581 | { | |
4582 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4583 | ||
4584 | if (INTEL_INFO(dev)->gen < 6 || IS_VALLEYVIEW(dev)) | |
4585 | return; | |
4586 | ||
4587 | mutex_lock(&dev_priv->rps.hw_lock); | |
4588 | __gen6_update_ring_freq(dev); | |
4589 | mutex_unlock(&dev_priv->rps.hw_lock); | |
4590 | } | |
4591 | ||
03af2045 | 4592 | static int cherryview_rps_max_freq(struct drm_i915_private *dev_priv) |
2b6b3a09 | 4593 | { |
095acd5f | 4594 | struct drm_device *dev = dev_priv->dev; |
2b6b3a09 D |
4595 | u32 val, rp0; |
4596 | ||
095acd5f D |
4597 | if (dev->pdev->revision >= 0x20) { |
4598 | val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE); | |
2b6b3a09 | 4599 | |
095acd5f D |
4600 | switch (INTEL_INFO(dev)->eu_total) { |
4601 | case 8: | |
4602 | /* (2 * 4) config */ | |
4603 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS4EU_FUSE_SHIFT); | |
4604 | break; | |
4605 | case 12: | |
4606 | /* (2 * 6) config */ | |
4607 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS6EU_FUSE_SHIFT); | |
4608 | break; | |
4609 | case 16: | |
4610 | /* (2 * 8) config */ | |
4611 | default: | |
4612 | /* Setting (2 * 8) Min RP0 for any other combination */ | |
4613 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS8EU_FUSE_SHIFT); | |
4614 | break; | |
4615 | } | |
4616 | rp0 = (rp0 & FB_GFX_FREQ_FUSE_MASK); | |
4617 | } else { | |
4618 | /* For pre-production hardware */ | |
4619 | val = vlv_punit_read(dev_priv, PUNIT_GPU_STATUS_REG); | |
4620 | rp0 = (val >> PUNIT_GPU_STATUS_MAX_FREQ_SHIFT) & | |
4621 | PUNIT_GPU_STATUS_MAX_FREQ_MASK; | |
4622 | } | |
2b6b3a09 D |
4623 | return rp0; |
4624 | } | |
4625 | ||
4626 | static int cherryview_rps_rpe_freq(struct drm_i915_private *dev_priv) | |
4627 | { | |
4628 | u32 val, rpe; | |
4629 | ||
4630 | val = vlv_punit_read(dev_priv, PUNIT_GPU_DUTYCYCLE_REG); | |
4631 | rpe = (val >> PUNIT_GPU_DUTYCYCLE_RPE_FREQ_SHIFT) & PUNIT_GPU_DUTYCYCLE_RPE_FREQ_MASK; | |
4632 | ||
4633 | return rpe; | |
4634 | } | |
4635 | ||
7707df4a D |
4636 | static int cherryview_rps_guar_freq(struct drm_i915_private *dev_priv) |
4637 | { | |
095acd5f | 4638 | struct drm_device *dev = dev_priv->dev; |
7707df4a D |
4639 | u32 val, rp1; |
4640 | ||
095acd5f D |
4641 | if (dev->pdev->revision >= 0x20) { |
4642 | val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE); | |
4643 | rp1 = (val & FB_GFX_FREQ_FUSE_MASK); | |
4644 | } else { | |
4645 | /* For pre-production hardware */ | |
4646 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); | |
4647 | rp1 = ((val >> PUNIT_GPU_STATUS_MAX_FREQ_SHIFT) & | |
4648 | PUNIT_GPU_STATUS_MAX_FREQ_MASK); | |
4649 | } | |
7707df4a D |
4650 | return rp1; |
4651 | } | |
4652 | ||
03af2045 | 4653 | static int cherryview_rps_min_freq(struct drm_i915_private *dev_priv) |
2b6b3a09 | 4654 | { |
095acd5f | 4655 | struct drm_device *dev = dev_priv->dev; |
2b6b3a09 D |
4656 | u32 val, rpn; |
4657 | ||
095acd5f D |
4658 | if (dev->pdev->revision >= 0x20) { |
4659 | val = vlv_punit_read(dev_priv, FB_GFX_FMIN_AT_VMIN_FUSE); | |
4660 | rpn = ((val >> FB_GFX_FMIN_AT_VMIN_FUSE_SHIFT) & | |
4661 | FB_GFX_FREQ_FUSE_MASK); | |
4662 | } else { /* For pre-production hardware */ | |
4663 | val = vlv_punit_read(dev_priv, PUNIT_GPU_STATUS_REG); | |
4664 | rpn = ((val >> PUNIT_GPU_STATIS_GFX_MIN_FREQ_SHIFT) & | |
4665 | PUNIT_GPU_STATUS_GFX_MIN_FREQ_MASK); | |
4666 | } | |
4667 | ||
2b6b3a09 D |
4668 | return rpn; |
4669 | } | |
4670 | ||
f8f2b001 D |
4671 | static int valleyview_rps_guar_freq(struct drm_i915_private *dev_priv) |
4672 | { | |
4673 | u32 val, rp1; | |
4674 | ||
4675 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE); | |
4676 | ||
4677 | rp1 = (val & FB_GFX_FGUARANTEED_FREQ_FUSE_MASK) >> FB_GFX_FGUARANTEED_FREQ_FUSE_SHIFT; | |
4678 | ||
4679 | return rp1; | |
4680 | } | |
4681 | ||
03af2045 | 4682 | static int valleyview_rps_max_freq(struct drm_i915_private *dev_priv) |
0a073b84 JB |
4683 | { |
4684 | u32 val, rp0; | |
4685 | ||
64936258 | 4686 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE); |
0a073b84 JB |
4687 | |
4688 | rp0 = (val & FB_GFX_MAX_FREQ_FUSE_MASK) >> FB_GFX_MAX_FREQ_FUSE_SHIFT; | |
4689 | /* Clamp to max */ | |
4690 | rp0 = min_t(u32, rp0, 0xea); | |
4691 | ||
4692 | return rp0; | |
4693 | } | |
4694 | ||
4695 | static int valleyview_rps_rpe_freq(struct drm_i915_private *dev_priv) | |
4696 | { | |
4697 | u32 val, rpe; | |
4698 | ||
64936258 | 4699 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_LO); |
0a073b84 | 4700 | rpe = (val & FB_FMAX_VMIN_FREQ_LO_MASK) >> FB_FMAX_VMIN_FREQ_LO_SHIFT; |
64936258 | 4701 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_HI); |
0a073b84 JB |
4702 | rpe |= (val & FB_FMAX_VMIN_FREQ_HI_MASK) << 5; |
4703 | ||
4704 | return rpe; | |
4705 | } | |
4706 | ||
03af2045 | 4707 | static int valleyview_rps_min_freq(struct drm_i915_private *dev_priv) |
0a073b84 | 4708 | { |
64936258 | 4709 | return vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM) & 0xff; |
0a073b84 JB |
4710 | } |
4711 | ||
ae48434c ID |
4712 | /* Check that the pctx buffer wasn't move under us. */ |
4713 | static void valleyview_check_pctx(struct drm_i915_private *dev_priv) | |
4714 | { | |
4715 | unsigned long pctx_addr = I915_READ(VLV_PCBR) & ~4095; | |
4716 | ||
4717 | WARN_ON(pctx_addr != dev_priv->mm.stolen_base + | |
4718 | dev_priv->vlv_pctx->stolen->start); | |
4719 | } | |
4720 | ||
38807746 D |
4721 | |
4722 | /* Check that the pcbr address is not empty. */ | |
4723 | static void cherryview_check_pctx(struct drm_i915_private *dev_priv) | |
4724 | { | |
4725 | unsigned long pctx_addr = I915_READ(VLV_PCBR) & ~4095; | |
4726 | ||
4727 | WARN_ON((pctx_addr >> VLV_PCBR_ADDR_SHIFT) == 0); | |
4728 | } | |
4729 | ||
4730 | static void cherryview_setup_pctx(struct drm_device *dev) | |
4731 | { | |
4732 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4733 | unsigned long pctx_paddr, paddr; | |
4734 | struct i915_gtt *gtt = &dev_priv->gtt; | |
4735 | u32 pcbr; | |
4736 | int pctx_size = 32*1024; | |
4737 | ||
4738 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); | |
4739 | ||
4740 | pcbr = I915_READ(VLV_PCBR); | |
4741 | if ((pcbr >> VLV_PCBR_ADDR_SHIFT) == 0) { | |
ce611ef8 | 4742 | DRM_DEBUG_DRIVER("BIOS didn't set up PCBR, fixing up\n"); |
38807746 D |
4743 | paddr = (dev_priv->mm.stolen_base + |
4744 | (gtt->stolen_size - pctx_size)); | |
4745 | ||
4746 | pctx_paddr = (paddr & (~4095)); | |
4747 | I915_WRITE(VLV_PCBR, pctx_paddr); | |
4748 | } | |
ce611ef8 VS |
4749 | |
4750 | DRM_DEBUG_DRIVER("PCBR: 0x%08x\n", I915_READ(VLV_PCBR)); | |
38807746 D |
4751 | } |
4752 | ||
c9cddffc JB |
4753 | static void valleyview_setup_pctx(struct drm_device *dev) |
4754 | { | |
4755 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4756 | struct drm_i915_gem_object *pctx; | |
4757 | unsigned long pctx_paddr; | |
4758 | u32 pcbr; | |
4759 | int pctx_size = 24*1024; | |
4760 | ||
17b0c1f7 ID |
4761 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); |
4762 | ||
c9cddffc JB |
4763 | pcbr = I915_READ(VLV_PCBR); |
4764 | if (pcbr) { | |
4765 | /* BIOS set it up already, grab the pre-alloc'd space */ | |
4766 | int pcbr_offset; | |
4767 | ||
4768 | pcbr_offset = (pcbr & (~4095)) - dev_priv->mm.stolen_base; | |
4769 | pctx = i915_gem_object_create_stolen_for_preallocated(dev_priv->dev, | |
4770 | pcbr_offset, | |
190d6cd5 | 4771 | I915_GTT_OFFSET_NONE, |
c9cddffc JB |
4772 | pctx_size); |
4773 | goto out; | |
4774 | } | |
4775 | ||
ce611ef8 VS |
4776 | DRM_DEBUG_DRIVER("BIOS didn't set up PCBR, fixing up\n"); |
4777 | ||
c9cddffc JB |
4778 | /* |
4779 | * From the Gunit register HAS: | |
4780 | * The Gfx driver is expected to program this register and ensure | |
4781 | * proper allocation within Gfx stolen memory. For example, this | |
4782 | * register should be programmed such than the PCBR range does not | |
4783 | * overlap with other ranges, such as the frame buffer, protected | |
4784 | * memory, or any other relevant ranges. | |
4785 | */ | |
4786 | pctx = i915_gem_object_create_stolen(dev, pctx_size); | |
4787 | if (!pctx) { | |
4788 | DRM_DEBUG("not enough stolen space for PCTX, disabling\n"); | |
4789 | return; | |
4790 | } | |
4791 | ||
4792 | pctx_paddr = dev_priv->mm.stolen_base + pctx->stolen->start; | |
4793 | I915_WRITE(VLV_PCBR, pctx_paddr); | |
4794 | ||
4795 | out: | |
ce611ef8 | 4796 | DRM_DEBUG_DRIVER("PCBR: 0x%08x\n", I915_READ(VLV_PCBR)); |
c9cddffc JB |
4797 | dev_priv->vlv_pctx = pctx; |
4798 | } | |
4799 | ||
ae48434c ID |
4800 | static void valleyview_cleanup_pctx(struct drm_device *dev) |
4801 | { | |
4802 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4803 | ||
4804 | if (WARN_ON(!dev_priv->vlv_pctx)) | |
4805 | return; | |
4806 | ||
4807 | drm_gem_object_unreference(&dev_priv->vlv_pctx->base); | |
4808 | dev_priv->vlv_pctx = NULL; | |
4809 | } | |
4810 | ||
4e80519e ID |
4811 | static void valleyview_init_gt_powersave(struct drm_device *dev) |
4812 | { | |
4813 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2bb25c17 | 4814 | u32 val; |
4e80519e ID |
4815 | |
4816 | valleyview_setup_pctx(dev); | |
4817 | ||
4818 | mutex_lock(&dev_priv->rps.hw_lock); | |
4819 | ||
2bb25c17 VS |
4820 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
4821 | switch ((val >> 6) & 3) { | |
4822 | case 0: | |
4823 | case 1: | |
4824 | dev_priv->mem_freq = 800; | |
4825 | break; | |
4826 | case 2: | |
4827 | dev_priv->mem_freq = 1066; | |
4828 | break; | |
4829 | case 3: | |
4830 | dev_priv->mem_freq = 1333; | |
4831 | break; | |
4832 | } | |
80b83b62 | 4833 | DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", dev_priv->mem_freq); |
2bb25c17 | 4834 | |
4e80519e ID |
4835 | dev_priv->rps.max_freq = valleyview_rps_max_freq(dev_priv); |
4836 | dev_priv->rps.rp0_freq = dev_priv->rps.max_freq; | |
4837 | DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 4838 | intel_gpu_freq(dev_priv, dev_priv->rps.max_freq), |
4e80519e ID |
4839 | dev_priv->rps.max_freq); |
4840 | ||
4841 | dev_priv->rps.efficient_freq = valleyview_rps_rpe_freq(dev_priv); | |
4842 | DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 4843 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
4e80519e ID |
4844 | dev_priv->rps.efficient_freq); |
4845 | ||
f8f2b001 D |
4846 | dev_priv->rps.rp1_freq = valleyview_rps_guar_freq(dev_priv); |
4847 | DRM_DEBUG_DRIVER("RP1(Guar Freq) GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 4848 | intel_gpu_freq(dev_priv, dev_priv->rps.rp1_freq), |
f8f2b001 D |
4849 | dev_priv->rps.rp1_freq); |
4850 | ||
4e80519e ID |
4851 | dev_priv->rps.min_freq = valleyview_rps_min_freq(dev_priv); |
4852 | DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 4853 | intel_gpu_freq(dev_priv, dev_priv->rps.min_freq), |
4e80519e ID |
4854 | dev_priv->rps.min_freq); |
4855 | ||
aed242ff CW |
4856 | dev_priv->rps.idle_freq = dev_priv->rps.min_freq; |
4857 | ||
4e80519e ID |
4858 | /* Preserve min/max settings in case of re-init */ |
4859 | if (dev_priv->rps.max_freq_softlimit == 0) | |
4860 | dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; | |
4861 | ||
4862 | if (dev_priv->rps.min_freq_softlimit == 0) | |
4863 | dev_priv->rps.min_freq_softlimit = dev_priv->rps.min_freq; | |
4864 | ||
4865 | mutex_unlock(&dev_priv->rps.hw_lock); | |
4866 | } | |
4867 | ||
38807746 D |
4868 | static void cherryview_init_gt_powersave(struct drm_device *dev) |
4869 | { | |
2b6b3a09 | 4870 | struct drm_i915_private *dev_priv = dev->dev_private; |
2bb25c17 | 4871 | u32 val; |
2b6b3a09 | 4872 | |
38807746 | 4873 | cherryview_setup_pctx(dev); |
2b6b3a09 D |
4874 | |
4875 | mutex_lock(&dev_priv->rps.hw_lock); | |
4876 | ||
c6e8f39d VS |
4877 | mutex_lock(&dev_priv->dpio_lock); |
4878 | val = vlv_cck_read(dev_priv, CCK_FUSE_REG); | |
4879 | mutex_unlock(&dev_priv->dpio_lock); | |
4880 | ||
2bb25c17 VS |
4881 | switch ((val >> 2) & 0x7) { |
4882 | case 0: | |
4883 | case 1: | |
4884 | dev_priv->rps.cz_freq = 200; | |
4885 | dev_priv->mem_freq = 1600; | |
4886 | break; | |
4887 | case 2: | |
4888 | dev_priv->rps.cz_freq = 267; | |
4889 | dev_priv->mem_freq = 1600; | |
4890 | break; | |
4891 | case 3: | |
4892 | dev_priv->rps.cz_freq = 333; | |
4893 | dev_priv->mem_freq = 2000; | |
4894 | break; | |
4895 | case 4: | |
4896 | dev_priv->rps.cz_freq = 320; | |
4897 | dev_priv->mem_freq = 1600; | |
4898 | break; | |
4899 | case 5: | |
4900 | dev_priv->rps.cz_freq = 400; | |
4901 | dev_priv->mem_freq = 1600; | |
4902 | break; | |
4903 | } | |
80b83b62 | 4904 | DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", dev_priv->mem_freq); |
2bb25c17 | 4905 | |
2b6b3a09 D |
4906 | dev_priv->rps.max_freq = cherryview_rps_max_freq(dev_priv); |
4907 | dev_priv->rps.rp0_freq = dev_priv->rps.max_freq; | |
4908 | DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 4909 | intel_gpu_freq(dev_priv, dev_priv->rps.max_freq), |
2b6b3a09 D |
4910 | dev_priv->rps.max_freq); |
4911 | ||
4912 | dev_priv->rps.efficient_freq = cherryview_rps_rpe_freq(dev_priv); | |
4913 | DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 4914 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
2b6b3a09 D |
4915 | dev_priv->rps.efficient_freq); |
4916 | ||
7707df4a D |
4917 | dev_priv->rps.rp1_freq = cherryview_rps_guar_freq(dev_priv); |
4918 | DRM_DEBUG_DRIVER("RP1(Guar) GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 4919 | intel_gpu_freq(dev_priv, dev_priv->rps.rp1_freq), |
7707df4a D |
4920 | dev_priv->rps.rp1_freq); |
4921 | ||
2b6b3a09 D |
4922 | dev_priv->rps.min_freq = cherryview_rps_min_freq(dev_priv); |
4923 | DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 4924 | intel_gpu_freq(dev_priv, dev_priv->rps.min_freq), |
2b6b3a09 D |
4925 | dev_priv->rps.min_freq); |
4926 | ||
1c14762d VS |
4927 | WARN_ONCE((dev_priv->rps.max_freq | |
4928 | dev_priv->rps.efficient_freq | | |
4929 | dev_priv->rps.rp1_freq | | |
4930 | dev_priv->rps.min_freq) & 1, | |
4931 | "Odd GPU freq values\n"); | |
4932 | ||
aed242ff CW |
4933 | dev_priv->rps.idle_freq = dev_priv->rps.min_freq; |
4934 | ||
2b6b3a09 D |
4935 | /* Preserve min/max settings in case of re-init */ |
4936 | if (dev_priv->rps.max_freq_softlimit == 0) | |
4937 | dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; | |
4938 | ||
4939 | if (dev_priv->rps.min_freq_softlimit == 0) | |
4940 | dev_priv->rps.min_freq_softlimit = dev_priv->rps.min_freq; | |
4941 | ||
4942 | mutex_unlock(&dev_priv->rps.hw_lock); | |
38807746 D |
4943 | } |
4944 | ||
4e80519e ID |
4945 | static void valleyview_cleanup_gt_powersave(struct drm_device *dev) |
4946 | { | |
4947 | valleyview_cleanup_pctx(dev); | |
4948 | } | |
4949 | ||
38807746 D |
4950 | static void cherryview_enable_rps(struct drm_device *dev) |
4951 | { | |
4952 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4953 | struct intel_engine_cs *ring; | |
2b6b3a09 | 4954 | u32 gtfifodbg, val, rc6_mode = 0, pcbr; |
38807746 D |
4955 | int i; |
4956 | ||
4957 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
4958 | ||
4959 | gtfifodbg = I915_READ(GTFIFODBG); | |
4960 | if (gtfifodbg) { | |
4961 | DRM_DEBUG_DRIVER("GT fifo had a previous error %x\n", | |
4962 | gtfifodbg); | |
4963 | I915_WRITE(GTFIFODBG, gtfifodbg); | |
4964 | } | |
4965 | ||
4966 | cherryview_check_pctx(dev_priv); | |
4967 | ||
4968 | /* 1a & 1b: Get forcewake during program sequence. Although the driver | |
4969 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 4970 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
38807746 | 4971 | |
160614a2 VS |
4972 | /* Disable RC states. */ |
4973 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
4974 | ||
38807746 D |
4975 | /* 2a: Program RC6 thresholds.*/ |
4976 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16); | |
4977 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ | |
4978 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
4979 | ||
4980 | for_each_ring(ring, dev_priv, i) | |
4981 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
4982 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
4983 | ||
af5a75a3 VS |
4984 | /* TO threshold set to 1750 us ( 0x557 * 1.28 us) */ |
4985 | I915_WRITE(GEN6_RC6_THRESHOLD, 0x557); | |
38807746 D |
4986 | |
4987 | /* allows RC6 residency counter to work */ | |
4988 | I915_WRITE(VLV_COUNTER_CONTROL, | |
4989 | _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH | | |
4990 | VLV_MEDIA_RC6_COUNT_EN | | |
4991 | VLV_RENDER_RC6_COUNT_EN)); | |
4992 | ||
4993 | /* For now we assume BIOS is allocating and populating the PCBR */ | |
4994 | pcbr = I915_READ(VLV_PCBR); | |
4995 | ||
38807746 D |
4996 | /* 3: Enable RC6 */ |
4997 | if ((intel_enable_rc6(dev) & INTEL_RC6_ENABLE) && | |
4998 | (pcbr >> VLV_PCBR_ADDR_SHIFT)) | |
af5a75a3 | 4999 | rc6_mode = GEN7_RC_CTL_TO_MODE; |
38807746 D |
5000 | |
5001 | I915_WRITE(GEN6_RC_CONTROL, rc6_mode); | |
5002 | ||
2b6b3a09 | 5003 | /* 4 Program defaults and thresholds for RPS*/ |
3cbdb48f | 5004 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000); |
2b6b3a09 D |
5005 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); |
5006 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); | |
5007 | I915_WRITE(GEN6_RP_UP_EI, 66000); | |
5008 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); | |
5009 | ||
5010 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
5011 | ||
5012 | /* 5: Enable RPS */ | |
5013 | I915_WRITE(GEN6_RP_CONTROL, | |
5014 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
eb973a5e | 5015 | GEN6_RP_MEDIA_IS_GFX | |
2b6b3a09 D |
5016 | GEN6_RP_ENABLE | |
5017 | GEN6_RP_UP_BUSY_AVG | | |
5018 | GEN6_RP_DOWN_IDLE_AVG); | |
5019 | ||
5020 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); | |
5021 | ||
8d40c3ae VS |
5022 | /* RPS code assumes GPLL is used */ |
5023 | WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n"); | |
5024 | ||
c8e9627d | 5025 | DRM_DEBUG_DRIVER("GPLL enabled? %s\n", val & GPLLENABLE ? "yes" : "no"); |
2b6b3a09 D |
5026 | DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val); |
5027 | ||
5028 | dev_priv->rps.cur_freq = (val >> 8) & 0xff; | |
5029 | DRM_DEBUG_DRIVER("current GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5030 | intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq), |
2b6b3a09 D |
5031 | dev_priv->rps.cur_freq); |
5032 | ||
5033 | DRM_DEBUG_DRIVER("setting GPU freq to %d MHz (%u)\n", | |
7c59a9c1 | 5034 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
2b6b3a09 D |
5035 | dev_priv->rps.efficient_freq); |
5036 | ||
5037 | valleyview_set_rps(dev_priv->dev, dev_priv->rps.efficient_freq); | |
5038 | ||
59bad947 | 5039 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
38807746 D |
5040 | } |
5041 | ||
0a073b84 JB |
5042 | static void valleyview_enable_rps(struct drm_device *dev) |
5043 | { | |
5044 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4872ba6 | 5045 | struct intel_engine_cs *ring; |
2a5913a8 | 5046 | u32 gtfifodbg, val, rc6_mode = 0; |
0a073b84 JB |
5047 | int i; |
5048 | ||
5049 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
5050 | ||
ae48434c ID |
5051 | valleyview_check_pctx(dev_priv); |
5052 | ||
0a073b84 | 5053 | if ((gtfifodbg = I915_READ(GTFIFODBG))) { |
f7d85c1e JB |
5054 | DRM_DEBUG_DRIVER("GT fifo had a previous error %x\n", |
5055 | gtfifodbg); | |
0a073b84 JB |
5056 | I915_WRITE(GTFIFODBG, gtfifodbg); |
5057 | } | |
5058 | ||
c8d9a590 | 5059 | /* If VLV, Forcewake all wells, else re-direct to regular path */ |
59bad947 | 5060 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
0a073b84 | 5061 | |
160614a2 VS |
5062 | /* Disable RC states. */ |
5063 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
5064 | ||
cad725fe | 5065 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000); |
0a073b84 JB |
5066 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); |
5067 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); | |
5068 | I915_WRITE(GEN6_RP_UP_EI, 66000); | |
5069 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); | |
5070 | ||
5071 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
5072 | ||
5073 | I915_WRITE(GEN6_RP_CONTROL, | |
5074 | GEN6_RP_MEDIA_TURBO | | |
5075 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
5076 | GEN6_RP_MEDIA_IS_GFX | | |
5077 | GEN6_RP_ENABLE | | |
5078 | GEN6_RP_UP_BUSY_AVG | | |
5079 | GEN6_RP_DOWN_IDLE_CONT); | |
5080 | ||
5081 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 0x00280000); | |
5082 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
5083 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
5084 | ||
5085 | for_each_ring(ring, dev_priv, i) | |
5086 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
5087 | ||
2f0aa304 | 5088 | I915_WRITE(GEN6_RC6_THRESHOLD, 0x557); |
0a073b84 JB |
5089 | |
5090 | /* allows RC6 residency counter to work */ | |
49798eb2 | 5091 | I915_WRITE(VLV_COUNTER_CONTROL, |
31685c25 D |
5092 | _MASKED_BIT_ENABLE(VLV_MEDIA_RC0_COUNT_EN | |
5093 | VLV_RENDER_RC0_COUNT_EN | | |
49798eb2 JB |
5094 | VLV_MEDIA_RC6_COUNT_EN | |
5095 | VLV_RENDER_RC6_COUNT_EN)); | |
31685c25 | 5096 | |
a2b23fe0 | 5097 | if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE) |
6b88f295 | 5098 | rc6_mode = GEN7_RC_CTL_TO_MODE | VLV_RC_CTL_CTX_RST_PARALLEL; |
dc39fff7 BW |
5099 | |
5100 | intel_print_rc6_info(dev, rc6_mode); | |
5101 | ||
a2b23fe0 | 5102 | I915_WRITE(GEN6_RC_CONTROL, rc6_mode); |
0a073b84 | 5103 | |
64936258 | 5104 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
0a073b84 | 5105 | |
8d40c3ae VS |
5106 | /* RPS code assumes GPLL is used */ |
5107 | WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n"); | |
5108 | ||
c8e9627d | 5109 | DRM_DEBUG_DRIVER("GPLL enabled? %s\n", val & GPLLENABLE ? "yes" : "no"); |
0a073b84 JB |
5110 | DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val); |
5111 | ||
b39fb297 | 5112 | dev_priv->rps.cur_freq = (val >> 8) & 0xff; |
73008b98 | 5113 | DRM_DEBUG_DRIVER("current GPU freq: %d MHz (%u)\n", |
7c59a9c1 | 5114 | intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq), |
b39fb297 | 5115 | dev_priv->rps.cur_freq); |
0a073b84 | 5116 | |
73008b98 | 5117 | DRM_DEBUG_DRIVER("setting GPU freq to %d MHz (%u)\n", |
7c59a9c1 | 5118 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
b39fb297 | 5119 | dev_priv->rps.efficient_freq); |
0a073b84 | 5120 | |
b39fb297 | 5121 | valleyview_set_rps(dev_priv->dev, dev_priv->rps.efficient_freq); |
0a073b84 | 5122 | |
59bad947 | 5123 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
0a073b84 JB |
5124 | } |
5125 | ||
dde18883 ED |
5126 | static unsigned long intel_pxfreq(u32 vidfreq) |
5127 | { | |
5128 | unsigned long freq; | |
5129 | int div = (vidfreq & 0x3f0000) >> 16; | |
5130 | int post = (vidfreq & 0x3000) >> 12; | |
5131 | int pre = (vidfreq & 0x7); | |
5132 | ||
5133 | if (!pre) | |
5134 | return 0; | |
5135 | ||
5136 | freq = ((div * 133333) / ((1<<post) * pre)); | |
5137 | ||
5138 | return freq; | |
5139 | } | |
5140 | ||
eb48eb00 DV |
5141 | static const struct cparams { |
5142 | u16 i; | |
5143 | u16 t; | |
5144 | u16 m; | |
5145 | u16 c; | |
5146 | } cparams[] = { | |
5147 | { 1, 1333, 301, 28664 }, | |
5148 | { 1, 1066, 294, 24460 }, | |
5149 | { 1, 800, 294, 25192 }, | |
5150 | { 0, 1333, 276, 27605 }, | |
5151 | { 0, 1066, 276, 27605 }, | |
5152 | { 0, 800, 231, 23784 }, | |
5153 | }; | |
5154 | ||
f531dcb2 | 5155 | static unsigned long __i915_chipset_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
5156 | { |
5157 | u64 total_count, diff, ret; | |
5158 | u32 count1, count2, count3, m = 0, c = 0; | |
5159 | unsigned long now = jiffies_to_msecs(jiffies), diff1; | |
5160 | int i; | |
5161 | ||
02d71956 DV |
5162 | assert_spin_locked(&mchdev_lock); |
5163 | ||
20e4d407 | 5164 | diff1 = now - dev_priv->ips.last_time1; |
eb48eb00 DV |
5165 | |
5166 | /* Prevent division-by-zero if we are asking too fast. | |
5167 | * Also, we don't get interesting results if we are polling | |
5168 | * faster than once in 10ms, so just return the saved value | |
5169 | * in such cases. | |
5170 | */ | |
5171 | if (diff1 <= 10) | |
20e4d407 | 5172 | return dev_priv->ips.chipset_power; |
eb48eb00 DV |
5173 | |
5174 | count1 = I915_READ(DMIEC); | |
5175 | count2 = I915_READ(DDREC); | |
5176 | count3 = I915_READ(CSIEC); | |
5177 | ||
5178 | total_count = count1 + count2 + count3; | |
5179 | ||
5180 | /* FIXME: handle per-counter overflow */ | |
20e4d407 DV |
5181 | if (total_count < dev_priv->ips.last_count1) { |
5182 | diff = ~0UL - dev_priv->ips.last_count1; | |
eb48eb00 DV |
5183 | diff += total_count; |
5184 | } else { | |
20e4d407 | 5185 | diff = total_count - dev_priv->ips.last_count1; |
eb48eb00 DV |
5186 | } |
5187 | ||
5188 | for (i = 0; i < ARRAY_SIZE(cparams); i++) { | |
20e4d407 DV |
5189 | if (cparams[i].i == dev_priv->ips.c_m && |
5190 | cparams[i].t == dev_priv->ips.r_t) { | |
eb48eb00 DV |
5191 | m = cparams[i].m; |
5192 | c = cparams[i].c; | |
5193 | break; | |
5194 | } | |
5195 | } | |
5196 | ||
5197 | diff = div_u64(diff, diff1); | |
5198 | ret = ((m * diff) + c); | |
5199 | ret = div_u64(ret, 10); | |
5200 | ||
20e4d407 DV |
5201 | dev_priv->ips.last_count1 = total_count; |
5202 | dev_priv->ips.last_time1 = now; | |
eb48eb00 | 5203 | |
20e4d407 | 5204 | dev_priv->ips.chipset_power = ret; |
eb48eb00 DV |
5205 | |
5206 | return ret; | |
5207 | } | |
5208 | ||
f531dcb2 CW |
5209 | unsigned long i915_chipset_val(struct drm_i915_private *dev_priv) |
5210 | { | |
3d13ef2e | 5211 | struct drm_device *dev = dev_priv->dev; |
f531dcb2 CW |
5212 | unsigned long val; |
5213 | ||
3d13ef2e | 5214 | if (INTEL_INFO(dev)->gen != 5) |
f531dcb2 CW |
5215 | return 0; |
5216 | ||
5217 | spin_lock_irq(&mchdev_lock); | |
5218 | ||
5219 | val = __i915_chipset_val(dev_priv); | |
5220 | ||
5221 | spin_unlock_irq(&mchdev_lock); | |
5222 | ||
5223 | return val; | |
5224 | } | |
5225 | ||
eb48eb00 DV |
5226 | unsigned long i915_mch_val(struct drm_i915_private *dev_priv) |
5227 | { | |
5228 | unsigned long m, x, b; | |
5229 | u32 tsfs; | |
5230 | ||
5231 | tsfs = I915_READ(TSFS); | |
5232 | ||
5233 | m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT); | |
5234 | x = I915_READ8(TR1); | |
5235 | ||
5236 | b = tsfs & TSFS_INTR_MASK; | |
5237 | ||
5238 | return ((m * x) / 127) - b; | |
5239 | } | |
5240 | ||
d972d6ee MK |
5241 | static int _pxvid_to_vd(u8 pxvid) |
5242 | { | |
5243 | if (pxvid == 0) | |
5244 | return 0; | |
5245 | ||
5246 | if (pxvid >= 8 && pxvid < 31) | |
5247 | pxvid = 31; | |
5248 | ||
5249 | return (pxvid + 2) * 125; | |
5250 | } | |
5251 | ||
5252 | static u32 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid) | |
eb48eb00 | 5253 | { |
3d13ef2e | 5254 | struct drm_device *dev = dev_priv->dev; |
d972d6ee MK |
5255 | const int vd = _pxvid_to_vd(pxvid); |
5256 | const int vm = vd - 1125; | |
5257 | ||
3d13ef2e | 5258 | if (INTEL_INFO(dev)->is_mobile) |
d972d6ee MK |
5259 | return vm > 0 ? vm : 0; |
5260 | ||
5261 | return vd; | |
eb48eb00 DV |
5262 | } |
5263 | ||
02d71956 | 5264 | static void __i915_update_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 | 5265 | { |
5ed0bdf2 | 5266 | u64 now, diff, diffms; |
eb48eb00 DV |
5267 | u32 count; |
5268 | ||
02d71956 | 5269 | assert_spin_locked(&mchdev_lock); |
eb48eb00 | 5270 | |
5ed0bdf2 TG |
5271 | now = ktime_get_raw_ns(); |
5272 | diffms = now - dev_priv->ips.last_time2; | |
5273 | do_div(diffms, NSEC_PER_MSEC); | |
eb48eb00 DV |
5274 | |
5275 | /* Don't divide by 0 */ | |
eb48eb00 DV |
5276 | if (!diffms) |
5277 | return; | |
5278 | ||
5279 | count = I915_READ(GFXEC); | |
5280 | ||
20e4d407 DV |
5281 | if (count < dev_priv->ips.last_count2) { |
5282 | diff = ~0UL - dev_priv->ips.last_count2; | |
eb48eb00 DV |
5283 | diff += count; |
5284 | } else { | |
20e4d407 | 5285 | diff = count - dev_priv->ips.last_count2; |
eb48eb00 DV |
5286 | } |
5287 | ||
20e4d407 DV |
5288 | dev_priv->ips.last_count2 = count; |
5289 | dev_priv->ips.last_time2 = now; | |
eb48eb00 DV |
5290 | |
5291 | /* More magic constants... */ | |
5292 | diff = diff * 1181; | |
5293 | diff = div_u64(diff, diffms * 10); | |
20e4d407 | 5294 | dev_priv->ips.gfx_power = diff; |
eb48eb00 DV |
5295 | } |
5296 | ||
02d71956 DV |
5297 | void i915_update_gfx_val(struct drm_i915_private *dev_priv) |
5298 | { | |
3d13ef2e DL |
5299 | struct drm_device *dev = dev_priv->dev; |
5300 | ||
5301 | if (INTEL_INFO(dev)->gen != 5) | |
02d71956 DV |
5302 | return; |
5303 | ||
9270388e | 5304 | spin_lock_irq(&mchdev_lock); |
02d71956 DV |
5305 | |
5306 | __i915_update_gfx_val(dev_priv); | |
5307 | ||
9270388e | 5308 | spin_unlock_irq(&mchdev_lock); |
02d71956 DV |
5309 | } |
5310 | ||
f531dcb2 | 5311 | static unsigned long __i915_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
5312 | { |
5313 | unsigned long t, corr, state1, corr2, state2; | |
5314 | u32 pxvid, ext_v; | |
5315 | ||
02d71956 DV |
5316 | assert_spin_locked(&mchdev_lock); |
5317 | ||
b39fb297 | 5318 | pxvid = I915_READ(PXVFREQ_BASE + (dev_priv->rps.cur_freq * 4)); |
eb48eb00 DV |
5319 | pxvid = (pxvid >> 24) & 0x7f; |
5320 | ext_v = pvid_to_extvid(dev_priv, pxvid); | |
5321 | ||
5322 | state1 = ext_v; | |
5323 | ||
5324 | t = i915_mch_val(dev_priv); | |
5325 | ||
5326 | /* Revel in the empirically derived constants */ | |
5327 | ||
5328 | /* Correction factor in 1/100000 units */ | |
5329 | if (t > 80) | |
5330 | corr = ((t * 2349) + 135940); | |
5331 | else if (t >= 50) | |
5332 | corr = ((t * 964) + 29317); | |
5333 | else /* < 50 */ | |
5334 | corr = ((t * 301) + 1004); | |
5335 | ||
5336 | corr = corr * ((150142 * state1) / 10000 - 78642); | |
5337 | corr /= 100000; | |
20e4d407 | 5338 | corr2 = (corr * dev_priv->ips.corr); |
eb48eb00 DV |
5339 | |
5340 | state2 = (corr2 * state1) / 10000; | |
5341 | state2 /= 100; /* convert to mW */ | |
5342 | ||
02d71956 | 5343 | __i915_update_gfx_val(dev_priv); |
eb48eb00 | 5344 | |
20e4d407 | 5345 | return dev_priv->ips.gfx_power + state2; |
eb48eb00 DV |
5346 | } |
5347 | ||
f531dcb2 CW |
5348 | unsigned long i915_gfx_val(struct drm_i915_private *dev_priv) |
5349 | { | |
3d13ef2e | 5350 | struct drm_device *dev = dev_priv->dev; |
f531dcb2 CW |
5351 | unsigned long val; |
5352 | ||
3d13ef2e | 5353 | if (INTEL_INFO(dev)->gen != 5) |
f531dcb2 CW |
5354 | return 0; |
5355 | ||
5356 | spin_lock_irq(&mchdev_lock); | |
5357 | ||
5358 | val = __i915_gfx_val(dev_priv); | |
5359 | ||
5360 | spin_unlock_irq(&mchdev_lock); | |
5361 | ||
5362 | return val; | |
5363 | } | |
5364 | ||
eb48eb00 DV |
5365 | /** |
5366 | * i915_read_mch_val - return value for IPS use | |
5367 | * | |
5368 | * Calculate and return a value for the IPS driver to use when deciding whether | |
5369 | * we have thermal and power headroom to increase CPU or GPU power budget. | |
5370 | */ | |
5371 | unsigned long i915_read_mch_val(void) | |
5372 | { | |
5373 | struct drm_i915_private *dev_priv; | |
5374 | unsigned long chipset_val, graphics_val, ret = 0; | |
5375 | ||
9270388e | 5376 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
5377 | if (!i915_mch_dev) |
5378 | goto out_unlock; | |
5379 | dev_priv = i915_mch_dev; | |
5380 | ||
f531dcb2 CW |
5381 | chipset_val = __i915_chipset_val(dev_priv); |
5382 | graphics_val = __i915_gfx_val(dev_priv); | |
eb48eb00 DV |
5383 | |
5384 | ret = chipset_val + graphics_val; | |
5385 | ||
5386 | out_unlock: | |
9270388e | 5387 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
5388 | |
5389 | return ret; | |
5390 | } | |
5391 | EXPORT_SYMBOL_GPL(i915_read_mch_val); | |
5392 | ||
5393 | /** | |
5394 | * i915_gpu_raise - raise GPU frequency limit | |
5395 | * | |
5396 | * Raise the limit; IPS indicates we have thermal headroom. | |
5397 | */ | |
5398 | bool i915_gpu_raise(void) | |
5399 | { | |
5400 | struct drm_i915_private *dev_priv; | |
5401 | bool ret = true; | |
5402 | ||
9270388e | 5403 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
5404 | if (!i915_mch_dev) { |
5405 | ret = false; | |
5406 | goto out_unlock; | |
5407 | } | |
5408 | dev_priv = i915_mch_dev; | |
5409 | ||
20e4d407 DV |
5410 | if (dev_priv->ips.max_delay > dev_priv->ips.fmax) |
5411 | dev_priv->ips.max_delay--; | |
eb48eb00 DV |
5412 | |
5413 | out_unlock: | |
9270388e | 5414 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
5415 | |
5416 | return ret; | |
5417 | } | |
5418 | EXPORT_SYMBOL_GPL(i915_gpu_raise); | |
5419 | ||
5420 | /** | |
5421 | * i915_gpu_lower - lower GPU frequency limit | |
5422 | * | |
5423 | * IPS indicates we're close to a thermal limit, so throttle back the GPU | |
5424 | * frequency maximum. | |
5425 | */ | |
5426 | bool i915_gpu_lower(void) | |
5427 | { | |
5428 | struct drm_i915_private *dev_priv; | |
5429 | bool ret = true; | |
5430 | ||
9270388e | 5431 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
5432 | if (!i915_mch_dev) { |
5433 | ret = false; | |
5434 | goto out_unlock; | |
5435 | } | |
5436 | dev_priv = i915_mch_dev; | |
5437 | ||
20e4d407 DV |
5438 | if (dev_priv->ips.max_delay < dev_priv->ips.min_delay) |
5439 | dev_priv->ips.max_delay++; | |
eb48eb00 DV |
5440 | |
5441 | out_unlock: | |
9270388e | 5442 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
5443 | |
5444 | return ret; | |
5445 | } | |
5446 | EXPORT_SYMBOL_GPL(i915_gpu_lower); | |
5447 | ||
5448 | /** | |
5449 | * i915_gpu_busy - indicate GPU business to IPS | |
5450 | * | |
5451 | * Tell the IPS driver whether or not the GPU is busy. | |
5452 | */ | |
5453 | bool i915_gpu_busy(void) | |
5454 | { | |
5455 | struct drm_i915_private *dev_priv; | |
a4872ba6 | 5456 | struct intel_engine_cs *ring; |
eb48eb00 | 5457 | bool ret = false; |
f047e395 | 5458 | int i; |
eb48eb00 | 5459 | |
9270388e | 5460 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
5461 | if (!i915_mch_dev) |
5462 | goto out_unlock; | |
5463 | dev_priv = i915_mch_dev; | |
5464 | ||
f047e395 CW |
5465 | for_each_ring(ring, dev_priv, i) |
5466 | ret |= !list_empty(&ring->request_list); | |
eb48eb00 DV |
5467 | |
5468 | out_unlock: | |
9270388e | 5469 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
5470 | |
5471 | return ret; | |
5472 | } | |
5473 | EXPORT_SYMBOL_GPL(i915_gpu_busy); | |
5474 | ||
5475 | /** | |
5476 | * i915_gpu_turbo_disable - disable graphics turbo | |
5477 | * | |
5478 | * Disable graphics turbo by resetting the max frequency and setting the | |
5479 | * current frequency to the default. | |
5480 | */ | |
5481 | bool i915_gpu_turbo_disable(void) | |
5482 | { | |
5483 | struct drm_i915_private *dev_priv; | |
5484 | bool ret = true; | |
5485 | ||
9270388e | 5486 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
5487 | if (!i915_mch_dev) { |
5488 | ret = false; | |
5489 | goto out_unlock; | |
5490 | } | |
5491 | dev_priv = i915_mch_dev; | |
5492 | ||
20e4d407 | 5493 | dev_priv->ips.max_delay = dev_priv->ips.fstart; |
eb48eb00 | 5494 | |
20e4d407 | 5495 | if (!ironlake_set_drps(dev_priv->dev, dev_priv->ips.fstart)) |
eb48eb00 DV |
5496 | ret = false; |
5497 | ||
5498 | out_unlock: | |
9270388e | 5499 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
5500 | |
5501 | return ret; | |
5502 | } | |
5503 | EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable); | |
5504 | ||
5505 | /** | |
5506 | * Tells the intel_ips driver that the i915 driver is now loaded, if | |
5507 | * IPS got loaded first. | |
5508 | * | |
5509 | * This awkward dance is so that neither module has to depend on the | |
5510 | * other in order for IPS to do the appropriate communication of | |
5511 | * GPU turbo limits to i915. | |
5512 | */ | |
5513 | static void | |
5514 | ips_ping_for_i915_load(void) | |
5515 | { | |
5516 | void (*link)(void); | |
5517 | ||
5518 | link = symbol_get(ips_link_to_i915_driver); | |
5519 | if (link) { | |
5520 | link(); | |
5521 | symbol_put(ips_link_to_i915_driver); | |
5522 | } | |
5523 | } | |
5524 | ||
5525 | void intel_gpu_ips_init(struct drm_i915_private *dev_priv) | |
5526 | { | |
02d71956 DV |
5527 | /* We only register the i915 ips part with intel-ips once everything is |
5528 | * set up, to avoid intel-ips sneaking in and reading bogus values. */ | |
9270388e | 5529 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 5530 | i915_mch_dev = dev_priv; |
9270388e | 5531 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
5532 | |
5533 | ips_ping_for_i915_load(); | |
5534 | } | |
5535 | ||
5536 | void intel_gpu_ips_teardown(void) | |
5537 | { | |
9270388e | 5538 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 5539 | i915_mch_dev = NULL; |
9270388e | 5540 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 | 5541 | } |
76c3552f | 5542 | |
8090c6b9 | 5543 | static void intel_init_emon(struct drm_device *dev) |
dde18883 ED |
5544 | { |
5545 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5546 | u32 lcfuse; | |
5547 | u8 pxw[16]; | |
5548 | int i; | |
5549 | ||
5550 | /* Disable to program */ | |
5551 | I915_WRITE(ECR, 0); | |
5552 | POSTING_READ(ECR); | |
5553 | ||
5554 | /* Program energy weights for various events */ | |
5555 | I915_WRITE(SDEW, 0x15040d00); | |
5556 | I915_WRITE(CSIEW0, 0x007f0000); | |
5557 | I915_WRITE(CSIEW1, 0x1e220004); | |
5558 | I915_WRITE(CSIEW2, 0x04000004); | |
5559 | ||
5560 | for (i = 0; i < 5; i++) | |
5561 | I915_WRITE(PEW + (i * 4), 0); | |
5562 | for (i = 0; i < 3; i++) | |
5563 | I915_WRITE(DEW + (i * 4), 0); | |
5564 | ||
5565 | /* Program P-state weights to account for frequency power adjustment */ | |
5566 | for (i = 0; i < 16; i++) { | |
5567 | u32 pxvidfreq = I915_READ(PXVFREQ_BASE + (i * 4)); | |
5568 | unsigned long freq = intel_pxfreq(pxvidfreq); | |
5569 | unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >> | |
5570 | PXVFREQ_PX_SHIFT; | |
5571 | unsigned long val; | |
5572 | ||
5573 | val = vid * vid; | |
5574 | val *= (freq / 1000); | |
5575 | val *= 255; | |
5576 | val /= (127*127*900); | |
5577 | if (val > 0xff) | |
5578 | DRM_ERROR("bad pxval: %ld\n", val); | |
5579 | pxw[i] = val; | |
5580 | } | |
5581 | /* Render standby states get 0 weight */ | |
5582 | pxw[14] = 0; | |
5583 | pxw[15] = 0; | |
5584 | ||
5585 | for (i = 0; i < 4; i++) { | |
5586 | u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) | | |
5587 | (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]); | |
5588 | I915_WRITE(PXW + (i * 4), val); | |
5589 | } | |
5590 | ||
5591 | /* Adjust magic regs to magic values (more experimental results) */ | |
5592 | I915_WRITE(OGW0, 0); | |
5593 | I915_WRITE(OGW1, 0); | |
5594 | I915_WRITE(EG0, 0x00007f00); | |
5595 | I915_WRITE(EG1, 0x0000000e); | |
5596 | I915_WRITE(EG2, 0x000e0000); | |
5597 | I915_WRITE(EG3, 0x68000300); | |
5598 | I915_WRITE(EG4, 0x42000000); | |
5599 | I915_WRITE(EG5, 0x00140031); | |
5600 | I915_WRITE(EG6, 0); | |
5601 | I915_WRITE(EG7, 0); | |
5602 | ||
5603 | for (i = 0; i < 8; i++) | |
5604 | I915_WRITE(PXWL + (i * 4), 0); | |
5605 | ||
5606 | /* Enable PMON + select events */ | |
5607 | I915_WRITE(ECR, 0x80000019); | |
5608 | ||
5609 | lcfuse = I915_READ(LCFUSE02); | |
5610 | ||
20e4d407 | 5611 | dev_priv->ips.corr = (lcfuse & LCFUSE_HIV_MASK); |
dde18883 ED |
5612 | } |
5613 | ||
ae48434c ID |
5614 | void intel_init_gt_powersave(struct drm_device *dev) |
5615 | { | |
e6069ca8 ID |
5616 | i915.enable_rc6 = sanitize_rc6_option(dev, i915.enable_rc6); |
5617 | ||
38807746 D |
5618 | if (IS_CHERRYVIEW(dev)) |
5619 | cherryview_init_gt_powersave(dev); | |
5620 | else if (IS_VALLEYVIEW(dev)) | |
4e80519e | 5621 | valleyview_init_gt_powersave(dev); |
ae48434c ID |
5622 | } |
5623 | ||
5624 | void intel_cleanup_gt_powersave(struct drm_device *dev) | |
5625 | { | |
38807746 D |
5626 | if (IS_CHERRYVIEW(dev)) |
5627 | return; | |
5628 | else if (IS_VALLEYVIEW(dev)) | |
4e80519e | 5629 | valleyview_cleanup_gt_powersave(dev); |
ae48434c ID |
5630 | } |
5631 | ||
dbea3cea ID |
5632 | static void gen6_suspend_rps(struct drm_device *dev) |
5633 | { | |
5634 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5635 | ||
5636 | flush_delayed_work(&dev_priv->rps.delayed_resume_work); | |
5637 | ||
4c2a8897 | 5638 | gen6_disable_rps_interrupts(dev); |
dbea3cea ID |
5639 | } |
5640 | ||
156c7ca0 JB |
5641 | /** |
5642 | * intel_suspend_gt_powersave - suspend PM work and helper threads | |
5643 | * @dev: drm device | |
5644 | * | |
5645 | * We don't want to disable RC6 or other features here, we just want | |
5646 | * to make sure any work we've queued has finished and won't bother | |
5647 | * us while we're suspended. | |
5648 | */ | |
5649 | void intel_suspend_gt_powersave(struct drm_device *dev) | |
5650 | { | |
5651 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5652 | ||
d4d70aa5 ID |
5653 | if (INTEL_INFO(dev)->gen < 6) |
5654 | return; | |
5655 | ||
dbea3cea | 5656 | gen6_suspend_rps(dev); |
b47adc17 D |
5657 | |
5658 | /* Force GPU to min freq during suspend */ | |
5659 | gen6_rps_idle(dev_priv); | |
156c7ca0 JB |
5660 | } |
5661 | ||
8090c6b9 DV |
5662 | void intel_disable_gt_powersave(struct drm_device *dev) |
5663 | { | |
1a01ab3b JB |
5664 | struct drm_i915_private *dev_priv = dev->dev_private; |
5665 | ||
930ebb46 | 5666 | if (IS_IRONLAKE_M(dev)) { |
8090c6b9 | 5667 | ironlake_disable_drps(dev); |
38807746 | 5668 | } else if (INTEL_INFO(dev)->gen >= 6) { |
10d8d366 | 5669 | intel_suspend_gt_powersave(dev); |
e494837a | 5670 | |
4fc688ce | 5671 | mutex_lock(&dev_priv->rps.hw_lock); |
20e49366 ZW |
5672 | if (INTEL_INFO(dev)->gen >= 9) |
5673 | gen9_disable_rps(dev); | |
5674 | else if (IS_CHERRYVIEW(dev)) | |
38807746 D |
5675 | cherryview_disable_rps(dev); |
5676 | else if (IS_VALLEYVIEW(dev)) | |
d20d4f0c JB |
5677 | valleyview_disable_rps(dev); |
5678 | else | |
5679 | gen6_disable_rps(dev); | |
e534770a | 5680 | |
c0951f0c | 5681 | dev_priv->rps.enabled = false; |
4fc688ce | 5682 | mutex_unlock(&dev_priv->rps.hw_lock); |
930ebb46 | 5683 | } |
8090c6b9 DV |
5684 | } |
5685 | ||
1a01ab3b JB |
5686 | static void intel_gen6_powersave_work(struct work_struct *work) |
5687 | { | |
5688 | struct drm_i915_private *dev_priv = | |
5689 | container_of(work, struct drm_i915_private, | |
5690 | rps.delayed_resume_work.work); | |
5691 | struct drm_device *dev = dev_priv->dev; | |
5692 | ||
4fc688ce | 5693 | mutex_lock(&dev_priv->rps.hw_lock); |
0a073b84 | 5694 | |
4c2a8897 | 5695 | gen6_reset_rps_interrupts(dev); |
3cc134e3 | 5696 | |
38807746 D |
5697 | if (IS_CHERRYVIEW(dev)) { |
5698 | cherryview_enable_rps(dev); | |
5699 | } else if (IS_VALLEYVIEW(dev)) { | |
0a073b84 | 5700 | valleyview_enable_rps(dev); |
20e49366 | 5701 | } else if (INTEL_INFO(dev)->gen >= 9) { |
b6fef0ef | 5702 | gen9_enable_rc6(dev); |
20e49366 | 5703 | gen9_enable_rps(dev); |
b6fef0ef | 5704 | __gen6_update_ring_freq(dev); |
6edee7f3 BW |
5705 | } else if (IS_BROADWELL(dev)) { |
5706 | gen8_enable_rps(dev); | |
c2bc2fc5 | 5707 | __gen6_update_ring_freq(dev); |
0a073b84 JB |
5708 | } else { |
5709 | gen6_enable_rps(dev); | |
c2bc2fc5 | 5710 | __gen6_update_ring_freq(dev); |
0a073b84 | 5711 | } |
aed242ff CW |
5712 | |
5713 | WARN_ON(dev_priv->rps.max_freq < dev_priv->rps.min_freq); | |
5714 | WARN_ON(dev_priv->rps.idle_freq > dev_priv->rps.max_freq); | |
5715 | ||
5716 | WARN_ON(dev_priv->rps.efficient_freq < dev_priv->rps.min_freq); | |
5717 | WARN_ON(dev_priv->rps.efficient_freq > dev_priv->rps.max_freq); | |
5718 | ||
c0951f0c | 5719 | dev_priv->rps.enabled = true; |
3cc134e3 | 5720 | |
4c2a8897 | 5721 | gen6_enable_rps_interrupts(dev); |
3cc134e3 | 5722 | |
4fc688ce | 5723 | mutex_unlock(&dev_priv->rps.hw_lock); |
c6df39b5 ID |
5724 | |
5725 | intel_runtime_pm_put(dev_priv); | |
1a01ab3b JB |
5726 | } |
5727 | ||
8090c6b9 DV |
5728 | void intel_enable_gt_powersave(struct drm_device *dev) |
5729 | { | |
1a01ab3b JB |
5730 | struct drm_i915_private *dev_priv = dev->dev_private; |
5731 | ||
f61018b1 YZ |
5732 | /* Powersaving is controlled by the host when inside a VM */ |
5733 | if (intel_vgpu_active(dev)) | |
5734 | return; | |
5735 | ||
8090c6b9 | 5736 | if (IS_IRONLAKE_M(dev)) { |
dc1d0136 | 5737 | mutex_lock(&dev->struct_mutex); |
8090c6b9 | 5738 | ironlake_enable_drps(dev); |
8090c6b9 | 5739 | intel_init_emon(dev); |
dc1d0136 | 5740 | mutex_unlock(&dev->struct_mutex); |
38807746 | 5741 | } else if (INTEL_INFO(dev)->gen >= 6) { |
1a01ab3b JB |
5742 | /* |
5743 | * PCU communication is slow and this doesn't need to be | |
5744 | * done at any specific time, so do this out of our fast path | |
5745 | * to make resume and init faster. | |
c6df39b5 ID |
5746 | * |
5747 | * We depend on the HW RC6 power context save/restore | |
5748 | * mechanism when entering D3 through runtime PM suspend. So | |
5749 | * disable RPM until RPS/RC6 is properly setup. We can only | |
5750 | * get here via the driver load/system resume/runtime resume | |
5751 | * paths, so the _noresume version is enough (and in case of | |
5752 | * runtime resume it's necessary). | |
1a01ab3b | 5753 | */ |
c6df39b5 ID |
5754 | if (schedule_delayed_work(&dev_priv->rps.delayed_resume_work, |
5755 | round_jiffies_up_relative(HZ))) | |
5756 | intel_runtime_pm_get_noresume(dev_priv); | |
8090c6b9 DV |
5757 | } |
5758 | } | |
5759 | ||
c6df39b5 ID |
5760 | void intel_reset_gt_powersave(struct drm_device *dev) |
5761 | { | |
5762 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5763 | ||
dbea3cea ID |
5764 | if (INTEL_INFO(dev)->gen < 6) |
5765 | return; | |
5766 | ||
5767 | gen6_suspend_rps(dev); | |
c6df39b5 | 5768 | dev_priv->rps.enabled = false; |
c6df39b5 ID |
5769 | } |
5770 | ||
3107bd48 DV |
5771 | static void ibx_init_clock_gating(struct drm_device *dev) |
5772 | { | |
5773 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5774 | ||
5775 | /* | |
5776 | * On Ibex Peak and Cougar Point, we need to disable clock | |
5777 | * gating for the panel power sequencer or it will fail to | |
5778 | * start up when no ports are active. | |
5779 | */ | |
5780 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); | |
5781 | } | |
5782 | ||
0e088b8f VS |
5783 | static void g4x_disable_trickle_feed(struct drm_device *dev) |
5784 | { | |
5785 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5786 | int pipe; | |
5787 | ||
055e393f | 5788 | for_each_pipe(dev_priv, pipe) { |
0e088b8f VS |
5789 | I915_WRITE(DSPCNTR(pipe), |
5790 | I915_READ(DSPCNTR(pipe)) | | |
5791 | DISPPLANE_TRICKLE_FEED_DISABLE); | |
1dba99f4 | 5792 | intel_flush_primary_plane(dev_priv, pipe); |
0e088b8f VS |
5793 | } |
5794 | } | |
5795 | ||
017636cc VS |
5796 | static void ilk_init_lp_watermarks(struct drm_device *dev) |
5797 | { | |
5798 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5799 | ||
5800 | I915_WRITE(WM3_LP_ILK, I915_READ(WM3_LP_ILK) & ~WM1_LP_SR_EN); | |
5801 | I915_WRITE(WM2_LP_ILK, I915_READ(WM2_LP_ILK) & ~WM1_LP_SR_EN); | |
5802 | I915_WRITE(WM1_LP_ILK, I915_READ(WM1_LP_ILK) & ~WM1_LP_SR_EN); | |
5803 | ||
5804 | /* | |
5805 | * Don't touch WM1S_LP_EN here. | |
5806 | * Doing so could cause underruns. | |
5807 | */ | |
5808 | } | |
5809 | ||
1fa61106 | 5810 | static void ironlake_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5811 | { |
5812 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231e54f6 | 5813 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 5814 | |
f1e8fa56 DL |
5815 | /* |
5816 | * Required for FBC | |
5817 | * WaFbcDisableDpfcClockGating:ilk | |
5818 | */ | |
4d47e4f5 DL |
5819 | dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE | |
5820 | ILK_DPFCUNIT_CLOCK_GATE_DISABLE | | |
5821 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE; | |
6f1d69b0 ED |
5822 | |
5823 | I915_WRITE(PCH_3DCGDIS0, | |
5824 | MARIUNIT_CLOCK_GATE_DISABLE | | |
5825 | SVSMUNIT_CLOCK_GATE_DISABLE); | |
5826 | I915_WRITE(PCH_3DCGDIS1, | |
5827 | VFMUNIT_CLOCK_GATE_DISABLE); | |
5828 | ||
6f1d69b0 ED |
5829 | /* |
5830 | * According to the spec the following bits should be set in | |
5831 | * order to enable memory self-refresh | |
5832 | * The bit 22/21 of 0x42004 | |
5833 | * The bit 5 of 0x42020 | |
5834 | * The bit 15 of 0x45000 | |
5835 | */ | |
5836 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
5837 | (I915_READ(ILK_DISPLAY_CHICKEN2) | | |
5838 | ILK_DPARB_GATE | ILK_VSDPFD_FULL)); | |
4d47e4f5 | 5839 | dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE; |
6f1d69b0 ED |
5840 | I915_WRITE(DISP_ARB_CTL, |
5841 | (I915_READ(DISP_ARB_CTL) | | |
5842 | DISP_FBC_WM_DIS)); | |
017636cc VS |
5843 | |
5844 | ilk_init_lp_watermarks(dev); | |
6f1d69b0 ED |
5845 | |
5846 | /* | |
5847 | * Based on the document from hardware guys the following bits | |
5848 | * should be set unconditionally in order to enable FBC. | |
5849 | * The bit 22 of 0x42000 | |
5850 | * The bit 22 of 0x42004 | |
5851 | * The bit 7,8,9 of 0x42020. | |
5852 | */ | |
5853 | if (IS_IRONLAKE_M(dev)) { | |
4bb35334 | 5854 | /* WaFbcAsynchFlipDisableFbcQueue:ilk */ |
6f1d69b0 ED |
5855 | I915_WRITE(ILK_DISPLAY_CHICKEN1, |
5856 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
5857 | ILK_FBCQ_DIS); | |
5858 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
5859 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
5860 | ILK_DPARB_GATE); | |
6f1d69b0 ED |
5861 | } |
5862 | ||
4d47e4f5 DL |
5863 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
5864 | ||
6f1d69b0 ED |
5865 | I915_WRITE(ILK_DISPLAY_CHICKEN2, |
5866 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
5867 | ILK_ELPIN_409_SELECT); | |
5868 | I915_WRITE(_3D_CHICKEN2, | |
5869 | _3D_CHICKEN2_WM_READ_PIPELINED << 16 | | |
5870 | _3D_CHICKEN2_WM_READ_PIPELINED); | |
4358a374 | 5871 | |
ecdb4eb7 | 5872 | /* WaDisableRenderCachePipelinedFlush:ilk */ |
4358a374 DV |
5873 | I915_WRITE(CACHE_MODE_0, |
5874 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
3107bd48 | 5875 | |
4e04632e AG |
5876 | /* WaDisable_RenderCache_OperationalFlush:ilk */ |
5877 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
5878 | ||
0e088b8f | 5879 | g4x_disable_trickle_feed(dev); |
bdad2b2f | 5880 | |
3107bd48 DV |
5881 | ibx_init_clock_gating(dev); |
5882 | } | |
5883 | ||
5884 | static void cpt_init_clock_gating(struct drm_device *dev) | |
5885 | { | |
5886 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5887 | int pipe; | |
3f704fa2 | 5888 | uint32_t val; |
3107bd48 DV |
5889 | |
5890 | /* | |
5891 | * On Ibex Peak and Cougar Point, we need to disable clock | |
5892 | * gating for the panel power sequencer or it will fail to | |
5893 | * start up when no ports are active. | |
5894 | */ | |
cd664078 JB |
5895 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE | |
5896 | PCH_DPLUNIT_CLOCK_GATE_DISABLE | | |
5897 | PCH_CPUNIT_CLOCK_GATE_DISABLE); | |
3107bd48 DV |
5898 | I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) | |
5899 | DPLS_EDP_PPS_FIX_DIS); | |
335c07b7 TI |
5900 | /* The below fixes the weird display corruption, a few pixels shifted |
5901 | * downward, on (only) LVDS of some HP laptops with IVY. | |
5902 | */ | |
055e393f | 5903 | for_each_pipe(dev_priv, pipe) { |
dc4bd2d1 PZ |
5904 | val = I915_READ(TRANS_CHICKEN2(pipe)); |
5905 | val |= TRANS_CHICKEN2_TIMING_OVERRIDE; | |
5906 | val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED; | |
41aa3448 | 5907 | if (dev_priv->vbt.fdi_rx_polarity_inverted) |
3f704fa2 | 5908 | val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED; |
dc4bd2d1 PZ |
5909 | val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK; |
5910 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER; | |
5911 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH; | |
3f704fa2 PZ |
5912 | I915_WRITE(TRANS_CHICKEN2(pipe), val); |
5913 | } | |
3107bd48 | 5914 | /* WADP0ClockGatingDisable */ |
055e393f | 5915 | for_each_pipe(dev_priv, pipe) { |
3107bd48 DV |
5916 | I915_WRITE(TRANS_CHICKEN1(pipe), |
5917 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); | |
5918 | } | |
6f1d69b0 ED |
5919 | } |
5920 | ||
1d7aaa0c DV |
5921 | static void gen6_check_mch_setup(struct drm_device *dev) |
5922 | { | |
5923 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5924 | uint32_t tmp; | |
5925 | ||
5926 | tmp = I915_READ(MCH_SSKPD); | |
df662a28 DV |
5927 | if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL) |
5928 | DRM_DEBUG_KMS("Wrong MCH_SSKPD value: 0x%08x This can cause underruns.\n", | |
5929 | tmp); | |
1d7aaa0c DV |
5930 | } |
5931 | ||
1fa61106 | 5932 | static void gen6_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5933 | { |
5934 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231e54f6 | 5935 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 5936 | |
231e54f6 | 5937 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
6f1d69b0 ED |
5938 | |
5939 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
5940 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
5941 | ILK_ELPIN_409_SELECT); | |
5942 | ||
ecdb4eb7 | 5943 | /* WaDisableHiZPlanesWhenMSAAEnabled:snb */ |
4283908e DV |
5944 | I915_WRITE(_3D_CHICKEN, |
5945 | _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB)); | |
5946 | ||
4e04632e AG |
5947 | /* WaDisable_RenderCache_OperationalFlush:snb */ |
5948 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
5949 | ||
8d85d272 VS |
5950 | /* |
5951 | * BSpec recoomends 8x4 when MSAA is used, | |
5952 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
5953 | * |
5954 | * Note that PS/WM thread counts depend on the WIZ hashing | |
5955 | * disable bit, which we don't touch here, but it's good | |
5956 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
8d85d272 VS |
5957 | */ |
5958 | I915_WRITE(GEN6_GT_MODE, | |
98533251 | 5959 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
8d85d272 | 5960 | |
017636cc | 5961 | ilk_init_lp_watermarks(dev); |
6f1d69b0 | 5962 | |
6f1d69b0 | 5963 | I915_WRITE(CACHE_MODE_0, |
50743298 | 5964 | _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB)); |
6f1d69b0 ED |
5965 | |
5966 | I915_WRITE(GEN6_UCGCTL1, | |
5967 | I915_READ(GEN6_UCGCTL1) | | |
5968 | GEN6_BLBUNIT_CLOCK_GATE_DISABLE | | |
5969 | GEN6_CSUNIT_CLOCK_GATE_DISABLE); | |
5970 | ||
5971 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock | |
5972 | * gating disable must be set. Failure to set it results in | |
5973 | * flickering pixels due to Z write ordering failures after | |
5974 | * some amount of runtime in the Mesa "fire" demo, and Unigine | |
5975 | * Sanctuary and Tropics, and apparently anything else with | |
5976 | * alpha test or pixel discard. | |
5977 | * | |
5978 | * According to the spec, bit 11 (RCCUNIT) must also be set, | |
5979 | * but we didn't debug actual testcases to find it out. | |
0f846f81 | 5980 | * |
ef59318c VS |
5981 | * WaDisableRCCUnitClockGating:snb |
5982 | * WaDisableRCPBUnitClockGating:snb | |
6f1d69b0 ED |
5983 | */ |
5984 | I915_WRITE(GEN6_UCGCTL2, | |
5985 | GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | | |
5986 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); | |
5987 | ||
5eb146dd | 5988 | /* WaStripsFansDisableFastClipPerformanceFix:snb */ |
743b57d8 VS |
5989 | I915_WRITE(_3D_CHICKEN3, |
5990 | _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL)); | |
6f1d69b0 | 5991 | |
e927ecde VS |
5992 | /* |
5993 | * Bspec says: | |
5994 | * "This bit must be set if 3DSTATE_CLIP clip mode is set to normal and | |
5995 | * 3DSTATE_SF number of SF output attributes is more than 16." | |
5996 | */ | |
5997 | I915_WRITE(_3D_CHICKEN3, | |
5998 | _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_PIPELINED_ATTR_FETCH)); | |
5999 | ||
6f1d69b0 ED |
6000 | /* |
6001 | * According to the spec the following bits should be | |
6002 | * set in order to enable memory self-refresh and fbc: | |
6003 | * The bit21 and bit22 of 0x42000 | |
6004 | * The bit21 and bit22 of 0x42004 | |
6005 | * The bit5 and bit7 of 0x42020 | |
6006 | * The bit14 of 0x70180 | |
6007 | * The bit14 of 0x71180 | |
4bb35334 DL |
6008 | * |
6009 | * WaFbcAsynchFlipDisableFbcQueue:snb | |
6f1d69b0 ED |
6010 | */ |
6011 | I915_WRITE(ILK_DISPLAY_CHICKEN1, | |
6012 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
6013 | ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS); | |
6014 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
6015 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6016 | ILK_DPARB_GATE | ILK_VSDPFD_FULL); | |
231e54f6 DL |
6017 | I915_WRITE(ILK_DSPCLK_GATE_D, |
6018 | I915_READ(ILK_DSPCLK_GATE_D) | | |
6019 | ILK_DPARBUNIT_CLOCK_GATE_ENABLE | | |
6020 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE); | |
6f1d69b0 | 6021 | |
0e088b8f | 6022 | g4x_disable_trickle_feed(dev); |
f8f2ac9a | 6023 | |
3107bd48 | 6024 | cpt_init_clock_gating(dev); |
1d7aaa0c DV |
6025 | |
6026 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
6027 | } |
6028 | ||
6029 | static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv) | |
6030 | { | |
6031 | uint32_t reg = I915_READ(GEN7_FF_THREAD_MODE); | |
6032 | ||
3aad9059 | 6033 | /* |
46680e0a | 6034 | * WaVSThreadDispatchOverride:ivb,vlv |
3aad9059 VS |
6035 | * |
6036 | * This actually overrides the dispatch | |
6037 | * mode for all thread types. | |
6038 | */ | |
6f1d69b0 ED |
6039 | reg &= ~GEN7_FF_SCHED_MASK; |
6040 | reg |= GEN7_FF_TS_SCHED_HW; | |
6041 | reg |= GEN7_FF_VS_SCHED_HW; | |
6042 | reg |= GEN7_FF_DS_SCHED_HW; | |
6043 | ||
6044 | I915_WRITE(GEN7_FF_THREAD_MODE, reg); | |
6045 | } | |
6046 | ||
17a303ec PZ |
6047 | static void lpt_init_clock_gating(struct drm_device *dev) |
6048 | { | |
6049 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6050 | ||
6051 | /* | |
6052 | * TODO: this bit should only be enabled when really needed, then | |
6053 | * disabled when not needed anymore in order to save power. | |
6054 | */ | |
6055 | if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) | |
6056 | I915_WRITE(SOUTH_DSPCLK_GATE_D, | |
6057 | I915_READ(SOUTH_DSPCLK_GATE_D) | | |
6058 | PCH_LP_PARTITION_LEVEL_DISABLE); | |
0a790cdb PZ |
6059 | |
6060 | /* WADPOClockGatingDisable:hsw */ | |
6061 | I915_WRITE(_TRANSA_CHICKEN1, | |
6062 | I915_READ(_TRANSA_CHICKEN1) | | |
6063 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); | |
17a303ec PZ |
6064 | } |
6065 | ||
7d708ee4 ID |
6066 | static void lpt_suspend_hw(struct drm_device *dev) |
6067 | { | |
6068 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6069 | ||
6070 | if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) { | |
6071 | uint32_t val = I915_READ(SOUTH_DSPCLK_GATE_D); | |
6072 | ||
6073 | val &= ~PCH_LP_PARTITION_LEVEL_DISABLE; | |
6074 | I915_WRITE(SOUTH_DSPCLK_GATE_D, val); | |
6075 | } | |
6076 | } | |
6077 | ||
47c2bd97 | 6078 | static void broadwell_init_clock_gating(struct drm_device *dev) |
1020a5c2 BW |
6079 | { |
6080 | struct drm_i915_private *dev_priv = dev->dev_private; | |
07d27e20 | 6081 | enum pipe pipe; |
1020a5c2 BW |
6082 | |
6083 | I915_WRITE(WM3_LP_ILK, 0); | |
6084 | I915_WRITE(WM2_LP_ILK, 0); | |
6085 | I915_WRITE(WM1_LP_ILK, 0); | |
50ed5fbd | 6086 | |
ab57fff1 | 6087 | /* WaSwitchSolVfFArbitrationPriority:bdw */ |
50ed5fbd | 6088 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); |
fe4ab3ce | 6089 | |
ab57fff1 | 6090 | /* WaPsrDPAMaskVBlankInSRD:bdw */ |
fe4ab3ce BW |
6091 | I915_WRITE(CHICKEN_PAR1_1, |
6092 | I915_READ(CHICKEN_PAR1_1) | DPA_MASK_VBLANK_SRD); | |
6093 | ||
ab57fff1 | 6094 | /* WaPsrDPRSUnmaskVBlankInSRD:bdw */ |
055e393f | 6095 | for_each_pipe(dev_priv, pipe) { |
07d27e20 | 6096 | I915_WRITE(CHICKEN_PIPESL_1(pipe), |
c7c65622 | 6097 | I915_READ(CHICKEN_PIPESL_1(pipe)) | |
8f670bb1 | 6098 | BDW_DPRS_MASK_VBLANK_SRD); |
fe4ab3ce | 6099 | } |
63801f21 | 6100 | |
ab57fff1 BW |
6101 | /* WaVSRefCountFullforceMissDisable:bdw */ |
6102 | /* WaDSRefCountFullforceMissDisable:bdw */ | |
6103 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
6104 | I915_READ(GEN7_FF_THREAD_MODE) & | |
6105 | ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME)); | |
36075a4c | 6106 | |
295e8bb7 VS |
6107 | I915_WRITE(GEN6_RC_SLEEP_PSMI_CONTROL, |
6108 | _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); | |
4f1ca9e9 VS |
6109 | |
6110 | /* WaDisableSDEUnitClockGating:bdw */ | |
6111 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
6112 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
5d708680 | 6113 | |
89d6b2b8 | 6114 | lpt_init_clock_gating(dev); |
1020a5c2 BW |
6115 | } |
6116 | ||
cad2a2d7 ED |
6117 | static void haswell_init_clock_gating(struct drm_device *dev) |
6118 | { | |
6119 | struct drm_i915_private *dev_priv = dev->dev_private; | |
cad2a2d7 | 6120 | |
017636cc | 6121 | ilk_init_lp_watermarks(dev); |
cad2a2d7 | 6122 | |
f3fc4884 FJ |
6123 | /* L3 caching of data atomics doesn't work -- disable it. */ |
6124 | I915_WRITE(HSW_SCRATCH1, HSW_SCRATCH1_L3_DATA_ATOMICS_DISABLE); | |
6125 | I915_WRITE(HSW_ROW_CHICKEN3, | |
6126 | _MASKED_BIT_ENABLE(HSW_ROW_CHICKEN3_L3_GLOBAL_ATOMICS_DISABLE)); | |
6127 | ||
ecdb4eb7 | 6128 | /* This is required by WaCatErrorRejectionIssue:hsw */ |
cad2a2d7 ED |
6129 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
6130 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
6131 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
6132 | ||
e36ea7ff VS |
6133 | /* WaVSRefCountFullforceMissDisable:hsw */ |
6134 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
6135 | I915_READ(GEN7_FF_THREAD_MODE) & ~GEN7_FF_VS_REF_CNT_FFME); | |
cad2a2d7 | 6136 | |
4e04632e AG |
6137 | /* WaDisable_RenderCache_OperationalFlush:hsw */ |
6138 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6139 | ||
fe27c606 CW |
6140 | /* enable HiZ Raw Stall Optimization */ |
6141 | I915_WRITE(CACHE_MODE_0_GEN7, | |
6142 | _MASKED_BIT_DISABLE(HIZ_RAW_STALL_OPT_DISABLE)); | |
6143 | ||
ecdb4eb7 | 6144 | /* WaDisable4x2SubspanOptimization:hsw */ |
cad2a2d7 ED |
6145 | I915_WRITE(CACHE_MODE_1, |
6146 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
1544d9d5 | 6147 | |
a12c4967 VS |
6148 | /* |
6149 | * BSpec recommends 8x4 when MSAA is used, | |
6150 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
6151 | * |
6152 | * Note that PS/WM thread counts depend on the WIZ hashing | |
6153 | * disable bit, which we don't touch here, but it's good | |
6154 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
a12c4967 VS |
6155 | */ |
6156 | I915_WRITE(GEN7_GT_MODE, | |
98533251 | 6157 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
a12c4967 | 6158 | |
94411593 KG |
6159 | /* WaSampleCChickenBitEnable:hsw */ |
6160 | I915_WRITE(HALF_SLICE_CHICKEN3, | |
6161 | _MASKED_BIT_ENABLE(HSW_SAMPLE_C_PERFORMANCE)); | |
6162 | ||
ecdb4eb7 | 6163 | /* WaSwitchSolVfFArbitrationPriority:hsw */ |
e3dff585 BW |
6164 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); |
6165 | ||
90a88643 PZ |
6166 | /* WaRsPkgCStateDisplayPMReq:hsw */ |
6167 | I915_WRITE(CHICKEN_PAR1_1, | |
6168 | I915_READ(CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES); | |
1544d9d5 | 6169 | |
17a303ec | 6170 | lpt_init_clock_gating(dev); |
cad2a2d7 ED |
6171 | } |
6172 | ||
1fa61106 | 6173 | static void ivybridge_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6174 | { |
6175 | struct drm_i915_private *dev_priv = dev->dev_private; | |
20848223 | 6176 | uint32_t snpcr; |
6f1d69b0 | 6177 | |
017636cc | 6178 | ilk_init_lp_watermarks(dev); |
6f1d69b0 | 6179 | |
231e54f6 | 6180 | I915_WRITE(ILK_DSPCLK_GATE_D, ILK_VRHUNIT_CLOCK_GATE_DISABLE); |
6f1d69b0 | 6181 | |
ecdb4eb7 | 6182 | /* WaDisableEarlyCull:ivb */ |
87f8020e JB |
6183 | I915_WRITE(_3D_CHICKEN3, |
6184 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
6185 | ||
ecdb4eb7 | 6186 | /* WaDisableBackToBackFlipFix:ivb */ |
6f1d69b0 ED |
6187 | I915_WRITE(IVB_CHICKEN3, |
6188 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
6189 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
6190 | ||
ecdb4eb7 | 6191 | /* WaDisablePSDDualDispatchEnable:ivb */ |
12f3382b JB |
6192 | if (IS_IVB_GT1(dev)) |
6193 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, | |
6194 | _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
12f3382b | 6195 | |
4e04632e AG |
6196 | /* WaDisable_RenderCache_OperationalFlush:ivb */ |
6197 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6198 | ||
ecdb4eb7 | 6199 | /* Apply the WaDisableRHWOOptimizationForRenderHang:ivb workaround. */ |
6f1d69b0 ED |
6200 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
6201 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); | |
6202 | ||
ecdb4eb7 | 6203 | /* WaApplyL3ControlAndL3ChickenMode:ivb */ |
6f1d69b0 ED |
6204 | I915_WRITE(GEN7_L3CNTLREG1, |
6205 | GEN7_WA_FOR_GEN7_L3_CONTROL); | |
6206 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, | |
8ab43976 JB |
6207 | GEN7_WA_L3_CHICKEN_MODE); |
6208 | if (IS_IVB_GT1(dev)) | |
6209 | I915_WRITE(GEN7_ROW_CHICKEN2, | |
6210 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
412236c2 VS |
6211 | else { |
6212 | /* must write both registers */ | |
6213 | I915_WRITE(GEN7_ROW_CHICKEN2, | |
6214 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
8ab43976 JB |
6215 | I915_WRITE(GEN7_ROW_CHICKEN2_GT2, |
6216 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
412236c2 | 6217 | } |
6f1d69b0 | 6218 | |
ecdb4eb7 | 6219 | /* WaForceL3Serialization:ivb */ |
61939d97 JB |
6220 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
6221 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
6222 | ||
1b80a19a | 6223 | /* |
0f846f81 | 6224 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. |
ecdb4eb7 | 6225 | * This implements the WaDisableRCZUnitClockGating:ivb workaround. |
0f846f81 JB |
6226 | */ |
6227 | I915_WRITE(GEN6_UCGCTL2, | |
28acf3b2 | 6228 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE); |
0f846f81 | 6229 | |
ecdb4eb7 | 6230 | /* This is required by WaCatErrorRejectionIssue:ivb */ |
6f1d69b0 ED |
6231 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
6232 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
6233 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
6234 | ||
0e088b8f | 6235 | g4x_disable_trickle_feed(dev); |
6f1d69b0 ED |
6236 | |
6237 | gen7_setup_fixed_func_scheduler(dev_priv); | |
97e1930f | 6238 | |
22721343 CW |
6239 | if (0) { /* causes HiZ corruption on ivb:gt1 */ |
6240 | /* enable HiZ Raw Stall Optimization */ | |
6241 | I915_WRITE(CACHE_MODE_0_GEN7, | |
6242 | _MASKED_BIT_DISABLE(HIZ_RAW_STALL_OPT_DISABLE)); | |
6243 | } | |
116f2b6d | 6244 | |
ecdb4eb7 | 6245 | /* WaDisable4x2SubspanOptimization:ivb */ |
97e1930f DV |
6246 | I915_WRITE(CACHE_MODE_1, |
6247 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
20848223 | 6248 | |
a607c1a4 VS |
6249 | /* |
6250 | * BSpec recommends 8x4 when MSAA is used, | |
6251 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
6252 | * |
6253 | * Note that PS/WM thread counts depend on the WIZ hashing | |
6254 | * disable bit, which we don't touch here, but it's good | |
6255 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
a607c1a4 VS |
6256 | */ |
6257 | I915_WRITE(GEN7_GT_MODE, | |
98533251 | 6258 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
a607c1a4 | 6259 | |
20848223 BW |
6260 | snpcr = I915_READ(GEN6_MBCUNIT_SNPCR); |
6261 | snpcr &= ~GEN6_MBC_SNPCR_MASK; | |
6262 | snpcr |= GEN6_MBC_SNPCR_MED; | |
6263 | I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr); | |
3107bd48 | 6264 | |
ab5c608b BW |
6265 | if (!HAS_PCH_NOP(dev)) |
6266 | cpt_init_clock_gating(dev); | |
1d7aaa0c DV |
6267 | |
6268 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
6269 | } |
6270 | ||
c6beb13e VS |
6271 | static void vlv_init_display_clock_gating(struct drm_i915_private *dev_priv) |
6272 | { | |
6273 | I915_WRITE(DSPCLK_GATE_D, VRHUNIT_CLOCK_GATE_DISABLE); | |
6274 | ||
6275 | /* | |
6276 | * Disable trickle feed and enable pnd deadline calculation | |
6277 | */ | |
6278 | I915_WRITE(MI_ARB_VLV, MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE); | |
6279 | I915_WRITE(CBR1_VLV, 0); | |
6280 | } | |
6281 | ||
1fa61106 | 6282 | static void valleyview_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6283 | { |
6284 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6f1d69b0 | 6285 | |
c6beb13e | 6286 | vlv_init_display_clock_gating(dev_priv); |
6f1d69b0 | 6287 | |
ecdb4eb7 | 6288 | /* WaDisableEarlyCull:vlv */ |
87f8020e JB |
6289 | I915_WRITE(_3D_CHICKEN3, |
6290 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
6291 | ||
ecdb4eb7 | 6292 | /* WaDisableBackToBackFlipFix:vlv */ |
6f1d69b0 ED |
6293 | I915_WRITE(IVB_CHICKEN3, |
6294 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
6295 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
6296 | ||
fad7d36e | 6297 | /* WaPsdDispatchEnable:vlv */ |
ecdb4eb7 | 6298 | /* WaDisablePSDDualDispatchEnable:vlv */ |
12f3382b | 6299 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, |
d3bc0303 JB |
6300 | _MASKED_BIT_ENABLE(GEN7_MAX_PS_THREAD_DEP | |
6301 | GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
12f3382b | 6302 | |
4e04632e AG |
6303 | /* WaDisable_RenderCache_OperationalFlush:vlv */ |
6304 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6305 | ||
ecdb4eb7 | 6306 | /* WaForceL3Serialization:vlv */ |
61939d97 JB |
6307 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
6308 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
6309 | ||
ecdb4eb7 | 6310 | /* WaDisableDopClockGating:vlv */ |
8ab43976 JB |
6311 | I915_WRITE(GEN7_ROW_CHICKEN2, |
6312 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
6313 | ||
ecdb4eb7 | 6314 | /* This is required by WaCatErrorRejectionIssue:vlv */ |
6f1d69b0 ED |
6315 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
6316 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
6317 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
6318 | ||
46680e0a VS |
6319 | gen7_setup_fixed_func_scheduler(dev_priv); |
6320 | ||
3c0edaeb | 6321 | /* |
0f846f81 | 6322 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. |
ecdb4eb7 | 6323 | * This implements the WaDisableRCZUnitClockGating:vlv workaround. |
0f846f81 JB |
6324 | */ |
6325 | I915_WRITE(GEN6_UCGCTL2, | |
3c0edaeb | 6326 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE); |
0f846f81 | 6327 | |
c98f5062 AG |
6328 | /* WaDisableL3Bank2xClockGate:vlv |
6329 | * Disabling L3 clock gating- MMIO 940c[25] = 1 | |
6330 | * Set bit 25, to disable L3_BANK_2x_CLK_GATING */ | |
6331 | I915_WRITE(GEN7_UCGCTL4, | |
6332 | I915_READ(GEN7_UCGCTL4) | GEN7_L3BANK2X_CLOCK_GATE_DISABLE); | |
e3f33d46 | 6333 | |
afd58e79 VS |
6334 | /* |
6335 | * BSpec says this must be set, even though | |
6336 | * WaDisable4x2SubspanOptimization isn't listed for VLV. | |
6337 | */ | |
6b26c86d DV |
6338 | I915_WRITE(CACHE_MODE_1, |
6339 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
7983117f | 6340 | |
da2518f9 VS |
6341 | /* |
6342 | * BSpec recommends 8x4 when MSAA is used, | |
6343 | * however in practice 16x4 seems fastest. | |
6344 | * | |
6345 | * Note that PS/WM thread counts depend on the WIZ hashing | |
6346 | * disable bit, which we don't touch here, but it's good | |
6347 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
6348 | */ | |
6349 | I915_WRITE(GEN7_GT_MODE, | |
6350 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); | |
6351 | ||
031994ee VS |
6352 | /* |
6353 | * WaIncreaseL3CreditsForVLVB0:vlv | |
6354 | * This is the hardware default actually. | |
6355 | */ | |
6356 | I915_WRITE(GEN7_L3SQCREG1, VLV_B0_WA_L3SQCREG1_VALUE); | |
6357 | ||
2d809570 | 6358 | /* |
ecdb4eb7 | 6359 | * WaDisableVLVClockGating_VBIIssue:vlv |
2d809570 JB |
6360 | * Disable clock gating on th GCFG unit to prevent a delay |
6361 | * in the reporting of vblank events. | |
6362 | */ | |
7a0d1eed | 6363 | I915_WRITE(VLV_GUNIT_CLOCK_GATE, GCFG_DIS); |
6f1d69b0 ED |
6364 | } |
6365 | ||
a4565da8 VS |
6366 | static void cherryview_init_clock_gating(struct drm_device *dev) |
6367 | { | |
6368 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6369 | ||
c6beb13e | 6370 | vlv_init_display_clock_gating(dev_priv); |
dd811e70 | 6371 | |
232ce337 VS |
6372 | /* WaVSRefCountFullforceMissDisable:chv */ |
6373 | /* WaDSRefCountFullforceMissDisable:chv */ | |
6374 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
6375 | I915_READ(GEN7_FF_THREAD_MODE) & | |
6376 | ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME)); | |
acea6f95 VS |
6377 | |
6378 | /* WaDisableSemaphoreAndSyncFlipWait:chv */ | |
6379 | I915_WRITE(GEN6_RC_SLEEP_PSMI_CONTROL, | |
6380 | _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); | |
0846697c VS |
6381 | |
6382 | /* WaDisableCSUnitClockGating:chv */ | |
6383 | I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) | | |
6384 | GEN6_CSUNIT_CLOCK_GATE_DISABLE); | |
c631780f VS |
6385 | |
6386 | /* WaDisableSDEUnitClockGating:chv */ | |
6387 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
6388 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
a4565da8 VS |
6389 | } |
6390 | ||
1fa61106 | 6391 | static void g4x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6392 | { |
6393 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6394 | uint32_t dspclk_gate; | |
6395 | ||
6396 | I915_WRITE(RENCLK_GATE_D1, 0); | |
6397 | I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE | | |
6398 | GS_UNIT_CLOCK_GATE_DISABLE | | |
6399 | CL_UNIT_CLOCK_GATE_DISABLE); | |
6400 | I915_WRITE(RAMCLK_GATE_D, 0); | |
6401 | dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE | | |
6402 | OVRUNIT_CLOCK_GATE_DISABLE | | |
6403 | OVCUNIT_CLOCK_GATE_DISABLE; | |
6404 | if (IS_GM45(dev)) | |
6405 | dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE; | |
6406 | I915_WRITE(DSPCLK_GATE_D, dspclk_gate); | |
4358a374 DV |
6407 | |
6408 | /* WaDisableRenderCachePipelinedFlush */ | |
6409 | I915_WRITE(CACHE_MODE_0, | |
6410 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
de1aa629 | 6411 | |
4e04632e AG |
6412 | /* WaDisable_RenderCache_OperationalFlush:g4x */ |
6413 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6414 | ||
0e088b8f | 6415 | g4x_disable_trickle_feed(dev); |
6f1d69b0 ED |
6416 | } |
6417 | ||
1fa61106 | 6418 | static void crestline_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6419 | { |
6420 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6421 | ||
6422 | I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE); | |
6423 | I915_WRITE(RENCLK_GATE_D2, 0); | |
6424 | I915_WRITE(DSPCLK_GATE_D, 0); | |
6425 | I915_WRITE(RAMCLK_GATE_D, 0); | |
6426 | I915_WRITE16(DEUC, 0); | |
20f94967 VS |
6427 | I915_WRITE(MI_ARB_STATE, |
6428 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
4e04632e AG |
6429 | |
6430 | /* WaDisable_RenderCache_OperationalFlush:gen4 */ | |
6431 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6f1d69b0 ED |
6432 | } |
6433 | ||
1fa61106 | 6434 | static void broadwater_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6435 | { |
6436 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6437 | ||
6438 | I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE | | |
6439 | I965_RCC_CLOCK_GATE_DISABLE | | |
6440 | I965_RCPB_CLOCK_GATE_DISABLE | | |
6441 | I965_ISC_CLOCK_GATE_DISABLE | | |
6442 | I965_FBC_CLOCK_GATE_DISABLE); | |
6443 | I915_WRITE(RENCLK_GATE_D2, 0); | |
20f94967 VS |
6444 | I915_WRITE(MI_ARB_STATE, |
6445 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
4e04632e AG |
6446 | |
6447 | /* WaDisable_RenderCache_OperationalFlush:gen4 */ | |
6448 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6f1d69b0 ED |
6449 | } |
6450 | ||
1fa61106 | 6451 | static void gen3_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6452 | { |
6453 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6454 | u32 dstate = I915_READ(D_STATE); | |
6455 | ||
6456 | dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING | | |
6457 | DSTATE_DOT_CLOCK_GATING; | |
6458 | I915_WRITE(D_STATE, dstate); | |
13a86b85 CW |
6459 | |
6460 | if (IS_PINEVIEW(dev)) | |
6461 | I915_WRITE(ECOSKPD, _MASKED_BIT_ENABLE(ECO_GATING_CX_ONLY)); | |
974a3b0f DV |
6462 | |
6463 | /* IIR "flip pending" means done if this bit is set */ | |
6464 | I915_WRITE(ECOSKPD, _MASKED_BIT_DISABLE(ECO_FLIP_DONE)); | |
12fabbcb VS |
6465 | |
6466 | /* interrupts should cause a wake up from C3 */ | |
3299254f | 6467 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_INT_EN)); |
dbb42748 VS |
6468 | |
6469 | /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ | |
6470 | I915_WRITE(MI_ARB_STATE, _MASKED_BIT_ENABLE(MI_ARB_C3_LP_WRITE_ENABLE)); | |
1038392b VS |
6471 | |
6472 | I915_WRITE(MI_ARB_STATE, | |
6473 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
6474 | } |
6475 | ||
1fa61106 | 6476 | static void i85x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6477 | { |
6478 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6479 | ||
6480 | I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE); | |
54e472ae VS |
6481 | |
6482 | /* interrupts should cause a wake up from C3 */ | |
6483 | I915_WRITE(MI_STATE, _MASKED_BIT_ENABLE(MI_AGPBUSY_INT_EN) | | |
6484 | _MASKED_BIT_DISABLE(MI_AGPBUSY_830_MODE)); | |
1038392b VS |
6485 | |
6486 | I915_WRITE(MEM_MODE, | |
6487 | _MASKED_BIT_ENABLE(MEM_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
6488 | } |
6489 | ||
1fa61106 | 6490 | static void i830_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6491 | { |
6492 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6493 | ||
6494 | I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE); | |
1038392b VS |
6495 | |
6496 | I915_WRITE(MEM_MODE, | |
6497 | _MASKED_BIT_ENABLE(MEM_DISPLAY_A_TRICKLE_FEED_DISABLE) | | |
6498 | _MASKED_BIT_ENABLE(MEM_DISPLAY_B_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
6499 | } |
6500 | ||
6f1d69b0 ED |
6501 | void intel_init_clock_gating(struct drm_device *dev) |
6502 | { | |
6503 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6504 | ||
c57e3551 DL |
6505 | if (dev_priv->display.init_clock_gating) |
6506 | dev_priv->display.init_clock_gating(dev); | |
6f1d69b0 ED |
6507 | } |
6508 | ||
7d708ee4 ID |
6509 | void intel_suspend_hw(struct drm_device *dev) |
6510 | { | |
6511 | if (HAS_PCH_LPT(dev)) | |
6512 | lpt_suspend_hw(dev); | |
6513 | } | |
6514 | ||
1fa61106 ED |
6515 | /* Set up chip specific power management-related functions */ |
6516 | void intel_init_pm(struct drm_device *dev) | |
6517 | { | |
6518 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6519 | ||
7ff0ebcc | 6520 | intel_fbc_init(dev_priv); |
1fa61106 | 6521 | |
c921aba8 DV |
6522 | /* For cxsr */ |
6523 | if (IS_PINEVIEW(dev)) | |
6524 | i915_pineview_get_mem_freq(dev); | |
6525 | else if (IS_GEN5(dev)) | |
6526 | i915_ironlake_get_mem_freq(dev); | |
6527 | ||
1fa61106 | 6528 | /* For FIFO watermark updates */ |
f5ed50cb | 6529 | if (INTEL_INFO(dev)->gen >= 9) { |
2af30a5c PB |
6530 | skl_setup_wm_latency(dev); |
6531 | ||
45db2194 | 6532 | dev_priv->display.init_clock_gating = skl_init_clock_gating; |
2d41c0b5 PB |
6533 | dev_priv->display.update_wm = skl_update_wm; |
6534 | dev_priv->display.update_sprite_wm = skl_update_sprite_wm; | |
c83155a6 | 6535 | } else if (HAS_PCH_SPLIT(dev)) { |
fa50ad61 | 6536 | ilk_setup_wm_latency(dev); |
53615a5e | 6537 | |
bd602544 VS |
6538 | if ((IS_GEN5(dev) && dev_priv->wm.pri_latency[1] && |
6539 | dev_priv->wm.spr_latency[1] && dev_priv->wm.cur_latency[1]) || | |
6540 | (!IS_GEN5(dev) && dev_priv->wm.pri_latency[0] && | |
6541 | dev_priv->wm.spr_latency[0] && dev_priv->wm.cur_latency[0])) { | |
6542 | dev_priv->display.update_wm = ilk_update_wm; | |
6543 | dev_priv->display.update_sprite_wm = ilk_update_sprite_wm; | |
6544 | } else { | |
6545 | DRM_DEBUG_KMS("Failed to read display plane latency. " | |
6546 | "Disable CxSR\n"); | |
6547 | } | |
6548 | ||
6549 | if (IS_GEN5(dev)) | |
1fa61106 | 6550 | dev_priv->display.init_clock_gating = ironlake_init_clock_gating; |
bd602544 | 6551 | else if (IS_GEN6(dev)) |
1fa61106 | 6552 | dev_priv->display.init_clock_gating = gen6_init_clock_gating; |
bd602544 | 6553 | else if (IS_IVYBRIDGE(dev)) |
1fa61106 | 6554 | dev_priv->display.init_clock_gating = ivybridge_init_clock_gating; |
bd602544 | 6555 | else if (IS_HASWELL(dev)) |
cad2a2d7 | 6556 | dev_priv->display.init_clock_gating = haswell_init_clock_gating; |
bd602544 | 6557 | else if (INTEL_INFO(dev)->gen == 8) |
47c2bd97 | 6558 | dev_priv->display.init_clock_gating = broadwell_init_clock_gating; |
a4565da8 | 6559 | } else if (IS_CHERRYVIEW(dev)) { |
ae80152d | 6560 | dev_priv->display.update_wm = valleyview_update_wm; |
01e184cc | 6561 | dev_priv->display.update_sprite_wm = valleyview_update_sprite_wm; |
a4565da8 VS |
6562 | dev_priv->display.init_clock_gating = |
6563 | cherryview_init_clock_gating; | |
1fa61106 ED |
6564 | } else if (IS_VALLEYVIEW(dev)) { |
6565 | dev_priv->display.update_wm = valleyview_update_wm; | |
01e184cc | 6566 | dev_priv->display.update_sprite_wm = valleyview_update_sprite_wm; |
1fa61106 ED |
6567 | dev_priv->display.init_clock_gating = |
6568 | valleyview_init_clock_gating; | |
1fa61106 ED |
6569 | } else if (IS_PINEVIEW(dev)) { |
6570 | if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev), | |
6571 | dev_priv->is_ddr3, | |
6572 | dev_priv->fsb_freq, | |
6573 | dev_priv->mem_freq)) { | |
6574 | DRM_INFO("failed to find known CxSR latency " | |
6575 | "(found ddr%s fsb freq %d, mem freq %d), " | |
6576 | "disabling CxSR\n", | |
6577 | (dev_priv->is_ddr3 == 1) ? "3" : "2", | |
6578 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
6579 | /* Disable CxSR and never update its watermark again */ | |
5209b1f4 | 6580 | intel_set_memory_cxsr(dev_priv, false); |
1fa61106 ED |
6581 | dev_priv->display.update_wm = NULL; |
6582 | } else | |
6583 | dev_priv->display.update_wm = pineview_update_wm; | |
6584 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; | |
6585 | } else if (IS_G4X(dev)) { | |
6586 | dev_priv->display.update_wm = g4x_update_wm; | |
6587 | dev_priv->display.init_clock_gating = g4x_init_clock_gating; | |
6588 | } else if (IS_GEN4(dev)) { | |
6589 | dev_priv->display.update_wm = i965_update_wm; | |
6590 | if (IS_CRESTLINE(dev)) | |
6591 | dev_priv->display.init_clock_gating = crestline_init_clock_gating; | |
6592 | else if (IS_BROADWATER(dev)) | |
6593 | dev_priv->display.init_clock_gating = broadwater_init_clock_gating; | |
6594 | } else if (IS_GEN3(dev)) { | |
6595 | dev_priv->display.update_wm = i9xx_update_wm; | |
6596 | dev_priv->display.get_fifo_size = i9xx_get_fifo_size; | |
6597 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; | |
feb56b93 DV |
6598 | } else if (IS_GEN2(dev)) { |
6599 | if (INTEL_INFO(dev)->num_pipes == 1) { | |
6600 | dev_priv->display.update_wm = i845_update_wm; | |
1fa61106 | 6601 | dev_priv->display.get_fifo_size = i845_get_fifo_size; |
feb56b93 DV |
6602 | } else { |
6603 | dev_priv->display.update_wm = i9xx_update_wm; | |
1fa61106 | 6604 | dev_priv->display.get_fifo_size = i830_get_fifo_size; |
feb56b93 DV |
6605 | } |
6606 | ||
6607 | if (IS_I85X(dev) || IS_I865G(dev)) | |
6608 | dev_priv->display.init_clock_gating = i85x_init_clock_gating; | |
6609 | else | |
6610 | dev_priv->display.init_clock_gating = i830_init_clock_gating; | |
6611 | } else { | |
6612 | DRM_ERROR("unexpected fall-through in intel_init_pm\n"); | |
1fa61106 ED |
6613 | } |
6614 | } | |
6615 | ||
151a49d0 | 6616 | int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val) |
42c0526c | 6617 | { |
4fc688ce | 6618 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c BW |
6619 | |
6620 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
6621 | DRM_DEBUG_DRIVER("warning: pcode (read) mailbox access failed\n"); | |
6622 | return -EAGAIN; | |
6623 | } | |
6624 | ||
6625 | I915_WRITE(GEN6_PCODE_DATA, *val); | |
dddab346 | 6626 | I915_WRITE(GEN6_PCODE_DATA1, 0); |
42c0526c BW |
6627 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); |
6628 | ||
6629 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, | |
6630 | 500)) { | |
6631 | DRM_ERROR("timeout waiting for pcode read (%d) to finish\n", mbox); | |
6632 | return -ETIMEDOUT; | |
6633 | } | |
6634 | ||
6635 | *val = I915_READ(GEN6_PCODE_DATA); | |
6636 | I915_WRITE(GEN6_PCODE_DATA, 0); | |
6637 | ||
6638 | return 0; | |
6639 | } | |
6640 | ||
151a49d0 | 6641 | int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u32 mbox, u32 val) |
42c0526c | 6642 | { |
4fc688ce | 6643 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c BW |
6644 | |
6645 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
6646 | DRM_DEBUG_DRIVER("warning: pcode (write) mailbox access failed\n"); | |
6647 | return -EAGAIN; | |
6648 | } | |
6649 | ||
6650 | I915_WRITE(GEN6_PCODE_DATA, val); | |
6651 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); | |
6652 | ||
6653 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, | |
6654 | 500)) { | |
6655 | DRM_ERROR("timeout waiting for pcode write (%d) to finish\n", mbox); | |
6656 | return -ETIMEDOUT; | |
6657 | } | |
6658 | ||
6659 | I915_WRITE(GEN6_PCODE_DATA, 0); | |
6660 | ||
6661 | return 0; | |
6662 | } | |
a0e4e199 | 6663 | |
dd06f88c | 6664 | static int vlv_gpu_freq_div(unsigned int czclk_freq) |
855ba3be | 6665 | { |
dd06f88c VS |
6666 | switch (czclk_freq) { |
6667 | case 200: | |
6668 | return 10; | |
6669 | case 267: | |
6670 | return 12; | |
6671 | case 320: | |
6672 | case 333: | |
dd06f88c | 6673 | return 16; |
ab3fb157 VS |
6674 | case 400: |
6675 | return 20; | |
855ba3be JB |
6676 | default: |
6677 | return -1; | |
6678 | } | |
dd06f88c | 6679 | } |
855ba3be | 6680 | |
dd06f88c VS |
6681 | static int byt_gpu_freq(struct drm_i915_private *dev_priv, int val) |
6682 | { | |
6683 | int div, czclk_freq = DIV_ROUND_CLOSEST(dev_priv->mem_freq, 4); | |
6684 | ||
6685 | div = vlv_gpu_freq_div(czclk_freq); | |
6686 | if (div < 0) | |
6687 | return div; | |
6688 | ||
6689 | return DIV_ROUND_CLOSEST(czclk_freq * (val + 6 - 0xbd), div); | |
855ba3be JB |
6690 | } |
6691 | ||
b55dd647 | 6692 | static int byt_freq_opcode(struct drm_i915_private *dev_priv, int val) |
855ba3be | 6693 | { |
dd06f88c | 6694 | int mul, czclk_freq = DIV_ROUND_CLOSEST(dev_priv->mem_freq, 4); |
855ba3be | 6695 | |
dd06f88c VS |
6696 | mul = vlv_gpu_freq_div(czclk_freq); |
6697 | if (mul < 0) | |
6698 | return mul; | |
855ba3be | 6699 | |
dd06f88c | 6700 | return DIV_ROUND_CLOSEST(mul * val, czclk_freq) + 0xbd - 6; |
855ba3be JB |
6701 | } |
6702 | ||
b55dd647 | 6703 | static int chv_gpu_freq(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 6704 | { |
dd06f88c | 6705 | int div, czclk_freq = dev_priv->rps.cz_freq; |
22b1b2f8 | 6706 | |
dd06f88c VS |
6707 | div = vlv_gpu_freq_div(czclk_freq) / 2; |
6708 | if (div < 0) | |
6709 | return div; | |
22b1b2f8 | 6710 | |
dd06f88c | 6711 | return DIV_ROUND_CLOSEST(czclk_freq * val, 2 * div) / 2; |
22b1b2f8 D |
6712 | } |
6713 | ||
b55dd647 | 6714 | static int chv_freq_opcode(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 6715 | { |
dd06f88c | 6716 | int mul, czclk_freq = dev_priv->rps.cz_freq; |
22b1b2f8 | 6717 | |
dd06f88c VS |
6718 | mul = vlv_gpu_freq_div(czclk_freq) / 2; |
6719 | if (mul < 0) | |
6720 | return mul; | |
22b1b2f8 | 6721 | |
1c14762d | 6722 | /* CHV needs even values */ |
dd06f88c | 6723 | return DIV_ROUND_CLOSEST(val * 2 * mul, czclk_freq) * 2; |
22b1b2f8 D |
6724 | } |
6725 | ||
616bc820 | 6726 | int intel_gpu_freq(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 6727 | { |
80b6dda4 AG |
6728 | if (IS_GEN9(dev_priv->dev)) |
6729 | return (val * GT_FREQUENCY_MULTIPLIER) / GEN9_FREQ_SCALER; | |
6730 | else if (IS_CHERRYVIEW(dev_priv->dev)) | |
616bc820 | 6731 | return chv_gpu_freq(dev_priv, val); |
22b1b2f8 | 6732 | else if (IS_VALLEYVIEW(dev_priv->dev)) |
616bc820 VS |
6733 | return byt_gpu_freq(dev_priv, val); |
6734 | else | |
6735 | return val * GT_FREQUENCY_MULTIPLIER; | |
22b1b2f8 D |
6736 | } |
6737 | ||
616bc820 VS |
6738 | int intel_freq_opcode(struct drm_i915_private *dev_priv, int val) |
6739 | { | |
80b6dda4 AG |
6740 | if (IS_GEN9(dev_priv->dev)) |
6741 | return (val * GEN9_FREQ_SCALER) / GT_FREQUENCY_MULTIPLIER; | |
6742 | else if (IS_CHERRYVIEW(dev_priv->dev)) | |
616bc820 | 6743 | return chv_freq_opcode(dev_priv, val); |
22b1b2f8 | 6744 | else if (IS_VALLEYVIEW(dev_priv->dev)) |
616bc820 VS |
6745 | return byt_freq_opcode(dev_priv, val); |
6746 | else | |
6747 | return val / GT_FREQUENCY_MULTIPLIER; | |
6748 | } | |
22b1b2f8 | 6749 | |
f742a552 | 6750 | void intel_pm_setup(struct drm_device *dev) |
907b28c5 CW |
6751 | { |
6752 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6753 | ||
f742a552 DV |
6754 | mutex_init(&dev_priv->rps.hw_lock); |
6755 | ||
907b28c5 CW |
6756 | INIT_DELAYED_WORK(&dev_priv->rps.delayed_resume_work, |
6757 | intel_gen6_powersave_work); | |
5d584b2e | 6758 | |
33688d95 | 6759 | dev_priv->pm.suspended = false; |
907b28c5 | 6760 | } |