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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 | 34 | /** |
18afd443 JN |
35 | * DOC: RC6 |
36 | * | |
dc39fff7 BW |
37 | * RC6 is a special power stage which allows the GPU to enter an very |
38 | * low-voltage mode when idle, using down to 0V while at this stage. This | |
39 | * stage is entered automatically when the GPU is idle when RC6 support is | |
40 | * enabled, and as soon as new workload arises GPU wakes up automatically as well. | |
41 | * | |
42 | * There are different RC6 modes available in Intel GPU, which differentiate | |
43 | * among each other with the latency required to enter and leave RC6 and | |
44 | * voltage consumed by the GPU in different states. | |
45 | * | |
46 | * The combination of the following flags define which states GPU is allowed | |
47 | * to enter, while RC6 is the normal RC6 state, RC6p is the deep RC6, and | |
48 | * RC6pp is deepest RC6. Their support by hardware varies according to the | |
49 | * GPU, BIOS, chipset and platform. RC6 is usually the safest one and the one | |
50 | * which brings the most power savings; deeper states save more power, but | |
51 | * require higher latency to switch to and wake up. | |
52 | */ | |
53 | #define INTEL_RC6_ENABLE (1<<0) | |
54 | #define INTEL_RC6p_ENABLE (1<<1) | |
55 | #define INTEL_RC6pp_ENABLE (1<<2) | |
56 | ||
a82abe43 ID |
57 | static void bxt_init_clock_gating(struct drm_device *dev) |
58 | { | |
32608ca2 ID |
59 | struct drm_i915_private *dev_priv = dev->dev_private; |
60 | ||
a7546159 NH |
61 | /* WaDisableSDEUnitClockGating:bxt */ |
62 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
63 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
64 | ||
32608ca2 ID |
65 | /* |
66 | * FIXME: | |
868434c5 | 67 | * GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ applies on 3x6 GT SKUs only. |
32608ca2 | 68 | */ |
32608ca2 | 69 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | |
868434c5 | 70 | GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ); |
d965e7ac ID |
71 | |
72 | /* | |
73 | * Wa: Backlight PWM may stop in the asserted state, causing backlight | |
74 | * to stay fully on. | |
75 | */ | |
76 | if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER)) | |
77 | I915_WRITE(GEN9_CLKGATE_DIS_0, I915_READ(GEN9_CLKGATE_DIS_0) | | |
78 | PWM1_GATING_DIS | PWM2_GATING_DIS); | |
a82abe43 ID |
79 | } |
80 | ||
c921aba8 DV |
81 | static void i915_pineview_get_mem_freq(struct drm_device *dev) |
82 | { | |
50227e1c | 83 | struct drm_i915_private *dev_priv = dev->dev_private; |
c921aba8 DV |
84 | u32 tmp; |
85 | ||
86 | tmp = I915_READ(CLKCFG); | |
87 | ||
88 | switch (tmp & CLKCFG_FSB_MASK) { | |
89 | case CLKCFG_FSB_533: | |
90 | dev_priv->fsb_freq = 533; /* 133*4 */ | |
91 | break; | |
92 | case CLKCFG_FSB_800: | |
93 | dev_priv->fsb_freq = 800; /* 200*4 */ | |
94 | break; | |
95 | case CLKCFG_FSB_667: | |
96 | dev_priv->fsb_freq = 667; /* 167*4 */ | |
97 | break; | |
98 | case CLKCFG_FSB_400: | |
99 | dev_priv->fsb_freq = 400; /* 100*4 */ | |
100 | break; | |
101 | } | |
102 | ||
103 | switch (tmp & CLKCFG_MEM_MASK) { | |
104 | case CLKCFG_MEM_533: | |
105 | dev_priv->mem_freq = 533; | |
106 | break; | |
107 | case CLKCFG_MEM_667: | |
108 | dev_priv->mem_freq = 667; | |
109 | break; | |
110 | case CLKCFG_MEM_800: | |
111 | dev_priv->mem_freq = 800; | |
112 | break; | |
113 | } | |
114 | ||
115 | /* detect pineview DDR3 setting */ | |
116 | tmp = I915_READ(CSHRDDR3CTL); | |
117 | dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0; | |
118 | } | |
119 | ||
120 | static void i915_ironlake_get_mem_freq(struct drm_device *dev) | |
121 | { | |
50227e1c | 122 | struct drm_i915_private *dev_priv = dev->dev_private; |
c921aba8 DV |
123 | u16 ddrpll, csipll; |
124 | ||
125 | ddrpll = I915_READ16(DDRMPLL1); | |
126 | csipll = I915_READ16(CSIPLL0); | |
127 | ||
128 | switch (ddrpll & 0xff) { | |
129 | case 0xc: | |
130 | dev_priv->mem_freq = 800; | |
131 | break; | |
132 | case 0x10: | |
133 | dev_priv->mem_freq = 1066; | |
134 | break; | |
135 | case 0x14: | |
136 | dev_priv->mem_freq = 1333; | |
137 | break; | |
138 | case 0x18: | |
139 | dev_priv->mem_freq = 1600; | |
140 | break; | |
141 | default: | |
142 | DRM_DEBUG_DRIVER("unknown memory frequency 0x%02x\n", | |
143 | ddrpll & 0xff); | |
144 | dev_priv->mem_freq = 0; | |
145 | break; | |
146 | } | |
147 | ||
20e4d407 | 148 | dev_priv->ips.r_t = dev_priv->mem_freq; |
c921aba8 DV |
149 | |
150 | switch (csipll & 0x3ff) { | |
151 | case 0x00c: | |
152 | dev_priv->fsb_freq = 3200; | |
153 | break; | |
154 | case 0x00e: | |
155 | dev_priv->fsb_freq = 3733; | |
156 | break; | |
157 | case 0x010: | |
158 | dev_priv->fsb_freq = 4266; | |
159 | break; | |
160 | case 0x012: | |
161 | dev_priv->fsb_freq = 4800; | |
162 | break; | |
163 | case 0x014: | |
164 | dev_priv->fsb_freq = 5333; | |
165 | break; | |
166 | case 0x016: | |
167 | dev_priv->fsb_freq = 5866; | |
168 | break; | |
169 | case 0x018: | |
170 | dev_priv->fsb_freq = 6400; | |
171 | break; | |
172 | default: | |
173 | DRM_DEBUG_DRIVER("unknown fsb frequency 0x%04x\n", | |
174 | csipll & 0x3ff); | |
175 | dev_priv->fsb_freq = 0; | |
176 | break; | |
177 | } | |
178 | ||
179 | if (dev_priv->fsb_freq == 3200) { | |
20e4d407 | 180 | dev_priv->ips.c_m = 0; |
c921aba8 | 181 | } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) { |
20e4d407 | 182 | dev_priv->ips.c_m = 1; |
c921aba8 | 183 | } else { |
20e4d407 | 184 | dev_priv->ips.c_m = 2; |
c921aba8 DV |
185 | } |
186 | } | |
187 | ||
b445e3b0 ED |
188 | static const struct cxsr_latency cxsr_latency_table[] = { |
189 | {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */ | |
190 | {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */ | |
191 | {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */ | |
192 | {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */ | |
193 | {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */ | |
194 | ||
195 | {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */ | |
196 | {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */ | |
197 | {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */ | |
198 | {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */ | |
199 | {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */ | |
200 | ||
201 | {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */ | |
202 | {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */ | |
203 | {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */ | |
204 | {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */ | |
205 | {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */ | |
206 | ||
207 | {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */ | |
208 | {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */ | |
209 | {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */ | |
210 | {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */ | |
211 | {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */ | |
212 | ||
213 | {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */ | |
214 | {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */ | |
215 | {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */ | |
216 | {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */ | |
217 | {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */ | |
218 | ||
219 | {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */ | |
220 | {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */ | |
221 | {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */ | |
222 | {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */ | |
223 | {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */ | |
224 | }; | |
225 | ||
63c62275 | 226 | static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, |
b445e3b0 ED |
227 | int is_ddr3, |
228 | int fsb, | |
229 | int mem) | |
230 | { | |
231 | const struct cxsr_latency *latency; | |
232 | int i; | |
233 | ||
234 | if (fsb == 0 || mem == 0) | |
235 | return NULL; | |
236 | ||
237 | for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) { | |
238 | latency = &cxsr_latency_table[i]; | |
239 | if (is_desktop == latency->is_desktop && | |
240 | is_ddr3 == latency->is_ddr3 && | |
241 | fsb == latency->fsb_freq && mem == latency->mem_freq) | |
242 | return latency; | |
243 | } | |
244 | ||
245 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
246 | ||
247 | return NULL; | |
248 | } | |
249 | ||
fc1ac8de VS |
250 | static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable) |
251 | { | |
252 | u32 val; | |
253 | ||
254 | mutex_lock(&dev_priv->rps.hw_lock); | |
255 | ||
256 | val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); | |
257 | if (enable) | |
258 | val &= ~FORCE_DDR_HIGH_FREQ; | |
259 | else | |
260 | val |= FORCE_DDR_HIGH_FREQ; | |
261 | val &= ~FORCE_DDR_LOW_FREQ; | |
262 | val |= FORCE_DDR_FREQ_REQ_ACK; | |
263 | vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val); | |
264 | ||
265 | if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) & | |
266 | FORCE_DDR_FREQ_REQ_ACK) == 0, 3)) | |
267 | DRM_ERROR("timed out waiting for Punit DDR DVFS request\n"); | |
268 | ||
269 | mutex_unlock(&dev_priv->rps.hw_lock); | |
270 | } | |
271 | ||
cfb41411 VS |
272 | static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable) |
273 | { | |
274 | u32 val; | |
275 | ||
276 | mutex_lock(&dev_priv->rps.hw_lock); | |
277 | ||
278 | val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ); | |
279 | if (enable) | |
280 | val |= DSP_MAXFIFO_PM5_ENABLE; | |
281 | else | |
282 | val &= ~DSP_MAXFIFO_PM5_ENABLE; | |
283 | vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val); | |
284 | ||
285 | mutex_unlock(&dev_priv->rps.hw_lock); | |
286 | } | |
287 | ||
f4998963 VS |
288 | #define FW_WM(value, plane) \ |
289 | (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK) | |
290 | ||
5209b1f4 | 291 | void intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable) |
b445e3b0 | 292 | { |
5209b1f4 ID |
293 | struct drm_device *dev = dev_priv->dev; |
294 | u32 val; | |
b445e3b0 | 295 | |
666a4537 | 296 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { |
5209b1f4 | 297 | I915_WRITE(FW_BLC_SELF_VLV, enable ? FW_CSPWRDWNEN : 0); |
a7a6c498 | 298 | POSTING_READ(FW_BLC_SELF_VLV); |
852eb00d | 299 | dev_priv->wm.vlv.cxsr = enable; |
5209b1f4 ID |
300 | } else if (IS_G4X(dev) || IS_CRESTLINE(dev)) { |
301 | I915_WRITE(FW_BLC_SELF, enable ? FW_BLC_SELF_EN : 0); | |
a7a6c498 | 302 | POSTING_READ(FW_BLC_SELF); |
5209b1f4 ID |
303 | } else if (IS_PINEVIEW(dev)) { |
304 | val = I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN; | |
305 | val |= enable ? PINEVIEW_SELF_REFRESH_EN : 0; | |
306 | I915_WRITE(DSPFW3, val); | |
a7a6c498 | 307 | POSTING_READ(DSPFW3); |
5209b1f4 ID |
308 | } else if (IS_I945G(dev) || IS_I945GM(dev)) { |
309 | val = enable ? _MASKED_BIT_ENABLE(FW_BLC_SELF_EN) : | |
310 | _MASKED_BIT_DISABLE(FW_BLC_SELF_EN); | |
311 | I915_WRITE(FW_BLC_SELF, val); | |
a7a6c498 | 312 | POSTING_READ(FW_BLC_SELF); |
5209b1f4 ID |
313 | } else if (IS_I915GM(dev)) { |
314 | val = enable ? _MASKED_BIT_ENABLE(INSTPM_SELF_EN) : | |
315 | _MASKED_BIT_DISABLE(INSTPM_SELF_EN); | |
316 | I915_WRITE(INSTPM, val); | |
a7a6c498 | 317 | POSTING_READ(INSTPM); |
5209b1f4 ID |
318 | } else { |
319 | return; | |
320 | } | |
b445e3b0 | 321 | |
5209b1f4 ID |
322 | DRM_DEBUG_KMS("memory self-refresh is %s\n", |
323 | enable ? "enabled" : "disabled"); | |
b445e3b0 ED |
324 | } |
325 | ||
fc1ac8de | 326 | |
b445e3b0 ED |
327 | /* |
328 | * Latency for FIFO fetches is dependent on several factors: | |
329 | * - memory configuration (speed, channels) | |
330 | * - chipset | |
331 | * - current MCH state | |
332 | * It can be fairly high in some situations, so here we assume a fairly | |
333 | * pessimal value. It's a tradeoff between extra memory fetches (if we | |
334 | * set this value too high, the FIFO will fetch frequently to stay full) | |
335 | * and power consumption (set it too low to save power and we might see | |
336 | * FIFO underruns and display "flicker"). | |
337 | * | |
338 | * A value of 5us seems to be a good balance; safe for very low end | |
339 | * platforms but not overly aggressive on lower latency configs. | |
340 | */ | |
5aef6003 | 341 | static const int pessimal_latency_ns = 5000; |
b445e3b0 | 342 | |
b5004720 VS |
343 | #define VLV_FIFO_START(dsparb, dsparb2, lo_shift, hi_shift) \ |
344 | ((((dsparb) >> (lo_shift)) & 0xff) | ((((dsparb2) >> (hi_shift)) & 0x1) << 8)) | |
345 | ||
346 | static int vlv_get_fifo_size(struct drm_device *dev, | |
347 | enum pipe pipe, int plane) | |
348 | { | |
349 | struct drm_i915_private *dev_priv = dev->dev_private; | |
350 | int sprite0_start, sprite1_start, size; | |
351 | ||
352 | switch (pipe) { | |
353 | uint32_t dsparb, dsparb2, dsparb3; | |
354 | case PIPE_A: | |
355 | dsparb = I915_READ(DSPARB); | |
356 | dsparb2 = I915_READ(DSPARB2); | |
357 | sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 0, 0); | |
358 | sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 8, 4); | |
359 | break; | |
360 | case PIPE_B: | |
361 | dsparb = I915_READ(DSPARB); | |
362 | dsparb2 = I915_READ(DSPARB2); | |
363 | sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 16, 8); | |
364 | sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 24, 12); | |
365 | break; | |
366 | case PIPE_C: | |
367 | dsparb2 = I915_READ(DSPARB2); | |
368 | dsparb3 = I915_READ(DSPARB3); | |
369 | sprite0_start = VLV_FIFO_START(dsparb3, dsparb2, 0, 16); | |
370 | sprite1_start = VLV_FIFO_START(dsparb3, dsparb2, 8, 20); | |
371 | break; | |
372 | default: | |
373 | return 0; | |
374 | } | |
375 | ||
376 | switch (plane) { | |
377 | case 0: | |
378 | size = sprite0_start; | |
379 | break; | |
380 | case 1: | |
381 | size = sprite1_start - sprite0_start; | |
382 | break; | |
383 | case 2: | |
384 | size = 512 - 1 - sprite1_start; | |
385 | break; | |
386 | default: | |
387 | return 0; | |
388 | } | |
389 | ||
390 | DRM_DEBUG_KMS("Pipe %c %s %c FIFO size: %d\n", | |
391 | pipe_name(pipe), plane == 0 ? "primary" : "sprite", | |
392 | plane == 0 ? plane_name(pipe) : sprite_name(pipe, plane - 1), | |
393 | size); | |
394 | ||
395 | return size; | |
396 | } | |
397 | ||
1fa61106 | 398 | static int i9xx_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
399 | { |
400 | struct drm_i915_private *dev_priv = dev->dev_private; | |
401 | uint32_t dsparb = I915_READ(DSPARB); | |
402 | int size; | |
403 | ||
404 | size = dsparb & 0x7f; | |
405 | if (plane) | |
406 | size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size; | |
407 | ||
408 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
409 | plane ? "B" : "A", size); | |
410 | ||
411 | return size; | |
412 | } | |
413 | ||
feb56b93 | 414 | static int i830_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
415 | { |
416 | struct drm_i915_private *dev_priv = dev->dev_private; | |
417 | uint32_t dsparb = I915_READ(DSPARB); | |
418 | int size; | |
419 | ||
420 | size = dsparb & 0x1ff; | |
421 | if (plane) | |
422 | size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size; | |
423 | size >>= 1; /* Convert to cachelines */ | |
424 | ||
425 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
426 | plane ? "B" : "A", size); | |
427 | ||
428 | return size; | |
429 | } | |
430 | ||
1fa61106 | 431 | static int i845_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
432 | { |
433 | struct drm_i915_private *dev_priv = dev->dev_private; | |
434 | uint32_t dsparb = I915_READ(DSPARB); | |
435 | int size; | |
436 | ||
437 | size = dsparb & 0x7f; | |
438 | size >>= 2; /* Convert to cachelines */ | |
439 | ||
440 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
441 | plane ? "B" : "A", | |
442 | size); | |
443 | ||
444 | return size; | |
445 | } | |
446 | ||
b445e3b0 ED |
447 | /* Pineview has different values for various configs */ |
448 | static const struct intel_watermark_params pineview_display_wm = { | |
e0f0273e VS |
449 | .fifo_size = PINEVIEW_DISPLAY_FIFO, |
450 | .max_wm = PINEVIEW_MAX_WM, | |
451 | .default_wm = PINEVIEW_DFT_WM, | |
452 | .guard_size = PINEVIEW_GUARD_WM, | |
453 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
454 | }; |
455 | static const struct intel_watermark_params pineview_display_hplloff_wm = { | |
e0f0273e VS |
456 | .fifo_size = PINEVIEW_DISPLAY_FIFO, |
457 | .max_wm = PINEVIEW_MAX_WM, | |
458 | .default_wm = PINEVIEW_DFT_HPLLOFF_WM, | |
459 | .guard_size = PINEVIEW_GUARD_WM, | |
460 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
461 | }; |
462 | static const struct intel_watermark_params pineview_cursor_wm = { | |
e0f0273e VS |
463 | .fifo_size = PINEVIEW_CURSOR_FIFO, |
464 | .max_wm = PINEVIEW_CURSOR_MAX_WM, | |
465 | .default_wm = PINEVIEW_CURSOR_DFT_WM, | |
466 | .guard_size = PINEVIEW_CURSOR_GUARD_WM, | |
467 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
468 | }; |
469 | static const struct intel_watermark_params pineview_cursor_hplloff_wm = { | |
e0f0273e VS |
470 | .fifo_size = PINEVIEW_CURSOR_FIFO, |
471 | .max_wm = PINEVIEW_CURSOR_MAX_WM, | |
472 | .default_wm = PINEVIEW_CURSOR_DFT_WM, | |
473 | .guard_size = PINEVIEW_CURSOR_GUARD_WM, | |
474 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
475 | }; |
476 | static const struct intel_watermark_params g4x_wm_info = { | |
e0f0273e VS |
477 | .fifo_size = G4X_FIFO_SIZE, |
478 | .max_wm = G4X_MAX_WM, | |
479 | .default_wm = G4X_MAX_WM, | |
480 | .guard_size = 2, | |
481 | .cacheline_size = G4X_FIFO_LINE_SIZE, | |
b445e3b0 ED |
482 | }; |
483 | static const struct intel_watermark_params g4x_cursor_wm_info = { | |
e0f0273e VS |
484 | .fifo_size = I965_CURSOR_FIFO, |
485 | .max_wm = I965_CURSOR_MAX_WM, | |
486 | .default_wm = I965_CURSOR_DFT_WM, | |
487 | .guard_size = 2, | |
488 | .cacheline_size = G4X_FIFO_LINE_SIZE, | |
b445e3b0 | 489 | }; |
b445e3b0 | 490 | static const struct intel_watermark_params i965_cursor_wm_info = { |
e0f0273e VS |
491 | .fifo_size = I965_CURSOR_FIFO, |
492 | .max_wm = I965_CURSOR_MAX_WM, | |
493 | .default_wm = I965_CURSOR_DFT_WM, | |
494 | .guard_size = 2, | |
495 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 ED |
496 | }; |
497 | static const struct intel_watermark_params i945_wm_info = { | |
e0f0273e VS |
498 | .fifo_size = I945_FIFO_SIZE, |
499 | .max_wm = I915_MAX_WM, | |
500 | .default_wm = 1, | |
501 | .guard_size = 2, | |
502 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 ED |
503 | }; |
504 | static const struct intel_watermark_params i915_wm_info = { | |
e0f0273e VS |
505 | .fifo_size = I915_FIFO_SIZE, |
506 | .max_wm = I915_MAX_WM, | |
507 | .default_wm = 1, | |
508 | .guard_size = 2, | |
509 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 | 510 | }; |
9d539105 | 511 | static const struct intel_watermark_params i830_a_wm_info = { |
e0f0273e VS |
512 | .fifo_size = I855GM_FIFO_SIZE, |
513 | .max_wm = I915_MAX_WM, | |
514 | .default_wm = 1, | |
515 | .guard_size = 2, | |
516 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
b445e3b0 | 517 | }; |
9d539105 VS |
518 | static const struct intel_watermark_params i830_bc_wm_info = { |
519 | .fifo_size = I855GM_FIFO_SIZE, | |
520 | .max_wm = I915_MAX_WM/2, | |
521 | .default_wm = 1, | |
522 | .guard_size = 2, | |
523 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
524 | }; | |
feb56b93 | 525 | static const struct intel_watermark_params i845_wm_info = { |
e0f0273e VS |
526 | .fifo_size = I830_FIFO_SIZE, |
527 | .max_wm = I915_MAX_WM, | |
528 | .default_wm = 1, | |
529 | .guard_size = 2, | |
530 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
b445e3b0 ED |
531 | }; |
532 | ||
b445e3b0 ED |
533 | /** |
534 | * intel_calculate_wm - calculate watermark level | |
535 | * @clock_in_khz: pixel clock | |
536 | * @wm: chip FIFO params | |
ac484963 | 537 | * @cpp: bytes per pixel |
b445e3b0 ED |
538 | * @latency_ns: memory latency for the platform |
539 | * | |
540 | * Calculate the watermark level (the level at which the display plane will | |
541 | * start fetching from memory again). Each chip has a different display | |
542 | * FIFO size and allocation, so the caller needs to figure that out and pass | |
543 | * in the correct intel_watermark_params structure. | |
544 | * | |
545 | * As the pixel clock runs, the FIFO will be drained at a rate that depends | |
546 | * on the pixel size. When it reaches the watermark level, it'll start | |
547 | * fetching FIFO line sized based chunks from memory until the FIFO fills | |
548 | * past the watermark point. If the FIFO drains completely, a FIFO underrun | |
549 | * will occur, and a display engine hang could result. | |
550 | */ | |
551 | static unsigned long intel_calculate_wm(unsigned long clock_in_khz, | |
552 | const struct intel_watermark_params *wm, | |
ac484963 | 553 | int fifo_size, int cpp, |
b445e3b0 ED |
554 | unsigned long latency_ns) |
555 | { | |
556 | long entries_required, wm_size; | |
557 | ||
558 | /* | |
559 | * Note: we need to make sure we don't overflow for various clock & | |
560 | * latency values. | |
561 | * clocks go from a few thousand to several hundred thousand. | |
562 | * latency is usually a few thousand | |
563 | */ | |
ac484963 | 564 | entries_required = ((clock_in_khz / 1000) * cpp * latency_ns) / |
b445e3b0 ED |
565 | 1000; |
566 | entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size); | |
567 | ||
568 | DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required); | |
569 | ||
570 | wm_size = fifo_size - (entries_required + wm->guard_size); | |
571 | ||
572 | DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size); | |
573 | ||
574 | /* Don't promote wm_size to unsigned... */ | |
575 | if (wm_size > (long)wm->max_wm) | |
576 | wm_size = wm->max_wm; | |
577 | if (wm_size <= 0) | |
578 | wm_size = wm->default_wm; | |
d6feb196 VS |
579 | |
580 | /* | |
581 | * Bspec seems to indicate that the value shouldn't be lower than | |
582 | * 'burst size + 1'. Certainly 830 is quite unhappy with low values. | |
583 | * Lets go for 8 which is the burst size since certain platforms | |
584 | * already use a hardcoded 8 (which is what the spec says should be | |
585 | * done). | |
586 | */ | |
587 | if (wm_size <= 8) | |
588 | wm_size = 8; | |
589 | ||
b445e3b0 ED |
590 | return wm_size; |
591 | } | |
592 | ||
593 | static struct drm_crtc *single_enabled_crtc(struct drm_device *dev) | |
594 | { | |
595 | struct drm_crtc *crtc, *enabled = NULL; | |
596 | ||
70e1e0ec | 597 | for_each_crtc(dev, crtc) { |
3490ea5d | 598 | if (intel_crtc_active(crtc)) { |
b445e3b0 ED |
599 | if (enabled) |
600 | return NULL; | |
601 | enabled = crtc; | |
602 | } | |
603 | } | |
604 | ||
605 | return enabled; | |
606 | } | |
607 | ||
46ba614c | 608 | static void pineview_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 609 | { |
46ba614c | 610 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
611 | struct drm_i915_private *dev_priv = dev->dev_private; |
612 | struct drm_crtc *crtc; | |
613 | const struct cxsr_latency *latency; | |
614 | u32 reg; | |
615 | unsigned long wm; | |
616 | ||
617 | latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3, | |
618 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
619 | if (!latency) { | |
620 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
5209b1f4 | 621 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
622 | return; |
623 | } | |
624 | ||
625 | crtc = single_enabled_crtc(dev); | |
626 | if (crtc) { | |
7c5f93b0 | 627 | const struct drm_display_mode *adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
ac484963 | 628 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
7c5f93b0 | 629 | int clock = adjusted_mode->crtc_clock; |
b445e3b0 ED |
630 | |
631 | /* Display SR */ | |
632 | wm = intel_calculate_wm(clock, &pineview_display_wm, | |
633 | pineview_display_wm.fifo_size, | |
ac484963 | 634 | cpp, latency->display_sr); |
b445e3b0 ED |
635 | reg = I915_READ(DSPFW1); |
636 | reg &= ~DSPFW_SR_MASK; | |
f4998963 | 637 | reg |= FW_WM(wm, SR); |
b445e3b0 ED |
638 | I915_WRITE(DSPFW1, reg); |
639 | DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg); | |
640 | ||
641 | /* cursor SR */ | |
642 | wm = intel_calculate_wm(clock, &pineview_cursor_wm, | |
643 | pineview_display_wm.fifo_size, | |
ac484963 | 644 | cpp, latency->cursor_sr); |
b445e3b0 ED |
645 | reg = I915_READ(DSPFW3); |
646 | reg &= ~DSPFW_CURSOR_SR_MASK; | |
f4998963 | 647 | reg |= FW_WM(wm, CURSOR_SR); |
b445e3b0 ED |
648 | I915_WRITE(DSPFW3, reg); |
649 | ||
650 | /* Display HPLL off SR */ | |
651 | wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm, | |
652 | pineview_display_hplloff_wm.fifo_size, | |
ac484963 | 653 | cpp, latency->display_hpll_disable); |
b445e3b0 ED |
654 | reg = I915_READ(DSPFW3); |
655 | reg &= ~DSPFW_HPLL_SR_MASK; | |
f4998963 | 656 | reg |= FW_WM(wm, HPLL_SR); |
b445e3b0 ED |
657 | I915_WRITE(DSPFW3, reg); |
658 | ||
659 | /* cursor HPLL off SR */ | |
660 | wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm, | |
661 | pineview_display_hplloff_wm.fifo_size, | |
ac484963 | 662 | cpp, latency->cursor_hpll_disable); |
b445e3b0 ED |
663 | reg = I915_READ(DSPFW3); |
664 | reg &= ~DSPFW_HPLL_CURSOR_MASK; | |
f4998963 | 665 | reg |= FW_WM(wm, HPLL_CURSOR); |
b445e3b0 ED |
666 | I915_WRITE(DSPFW3, reg); |
667 | DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg); | |
668 | ||
5209b1f4 | 669 | intel_set_memory_cxsr(dev_priv, true); |
b445e3b0 | 670 | } else { |
5209b1f4 | 671 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
672 | } |
673 | } | |
674 | ||
675 | static bool g4x_compute_wm0(struct drm_device *dev, | |
676 | int plane, | |
677 | const struct intel_watermark_params *display, | |
678 | int display_latency_ns, | |
679 | const struct intel_watermark_params *cursor, | |
680 | int cursor_latency_ns, | |
681 | int *plane_wm, | |
682 | int *cursor_wm) | |
683 | { | |
684 | struct drm_crtc *crtc; | |
4fe8590a | 685 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 686 | int htotal, hdisplay, clock, cpp; |
b445e3b0 ED |
687 | int line_time_us, line_count; |
688 | int entries, tlb_miss; | |
689 | ||
690 | crtc = intel_get_crtc_for_plane(dev, plane); | |
3490ea5d | 691 | if (!intel_crtc_active(crtc)) { |
b445e3b0 ED |
692 | *cursor_wm = cursor->guard_size; |
693 | *plane_wm = display->guard_size; | |
694 | return false; | |
695 | } | |
696 | ||
6e3c9717 | 697 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 698 | clock = adjusted_mode->crtc_clock; |
fec8cba3 | 699 | htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 700 | hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
ac484963 | 701 | cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b445e3b0 ED |
702 | |
703 | /* Use the small buffer method to calculate plane watermark */ | |
ac484963 | 704 | entries = ((clock * cpp / 1000) * display_latency_ns) / 1000; |
b445e3b0 ED |
705 | tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8; |
706 | if (tlb_miss > 0) | |
707 | entries += tlb_miss; | |
708 | entries = DIV_ROUND_UP(entries, display->cacheline_size); | |
709 | *plane_wm = entries + display->guard_size; | |
710 | if (*plane_wm > (int)display->max_wm) | |
711 | *plane_wm = display->max_wm; | |
712 | ||
713 | /* Use the large buffer method to calculate cursor watermark */ | |
922044c9 | 714 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 | 715 | line_count = (cursor_latency_ns / line_time_us + 1000) / 1000; |
ac484963 | 716 | entries = line_count * crtc->cursor->state->crtc_w * cpp; |
b445e3b0 ED |
717 | tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8; |
718 | if (tlb_miss > 0) | |
719 | entries += tlb_miss; | |
720 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); | |
721 | *cursor_wm = entries + cursor->guard_size; | |
722 | if (*cursor_wm > (int)cursor->max_wm) | |
723 | *cursor_wm = (int)cursor->max_wm; | |
724 | ||
725 | return true; | |
726 | } | |
727 | ||
728 | /* | |
729 | * Check the wm result. | |
730 | * | |
731 | * If any calculated watermark values is larger than the maximum value that | |
732 | * can be programmed into the associated watermark register, that watermark | |
733 | * must be disabled. | |
734 | */ | |
735 | static bool g4x_check_srwm(struct drm_device *dev, | |
736 | int display_wm, int cursor_wm, | |
737 | const struct intel_watermark_params *display, | |
738 | const struct intel_watermark_params *cursor) | |
739 | { | |
740 | DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n", | |
741 | display_wm, cursor_wm); | |
742 | ||
743 | if (display_wm > display->max_wm) { | |
744 | DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n", | |
745 | display_wm, display->max_wm); | |
746 | return false; | |
747 | } | |
748 | ||
749 | if (cursor_wm > cursor->max_wm) { | |
750 | DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n", | |
751 | cursor_wm, cursor->max_wm); | |
752 | return false; | |
753 | } | |
754 | ||
755 | if (!(display_wm || cursor_wm)) { | |
756 | DRM_DEBUG_KMS("SR latency is 0, disabling\n"); | |
757 | return false; | |
758 | } | |
759 | ||
760 | return true; | |
761 | } | |
762 | ||
763 | static bool g4x_compute_srwm(struct drm_device *dev, | |
764 | int plane, | |
765 | int latency_ns, | |
766 | const struct intel_watermark_params *display, | |
767 | const struct intel_watermark_params *cursor, | |
768 | int *display_wm, int *cursor_wm) | |
769 | { | |
770 | struct drm_crtc *crtc; | |
4fe8590a | 771 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 772 | int hdisplay, htotal, cpp, clock; |
b445e3b0 ED |
773 | unsigned long line_time_us; |
774 | int line_count, line_size; | |
775 | int small, large; | |
776 | int entries; | |
777 | ||
778 | if (!latency_ns) { | |
779 | *display_wm = *cursor_wm = 0; | |
780 | return false; | |
781 | } | |
782 | ||
783 | crtc = intel_get_crtc_for_plane(dev, plane); | |
6e3c9717 | 784 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 785 | clock = adjusted_mode->crtc_clock; |
fec8cba3 | 786 | htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 787 | hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
ac484963 | 788 | cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b445e3b0 | 789 | |
922044c9 | 790 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 | 791 | line_count = (latency_ns / line_time_us + 1000) / 1000; |
ac484963 | 792 | line_size = hdisplay * cpp; |
b445e3b0 ED |
793 | |
794 | /* Use the minimum of the small and large buffer method for primary */ | |
ac484963 | 795 | small = ((clock * cpp / 1000) * latency_ns) / 1000; |
b445e3b0 ED |
796 | large = line_count * line_size; |
797 | ||
798 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); | |
799 | *display_wm = entries + display->guard_size; | |
800 | ||
801 | /* calculate the self-refresh watermark for display cursor */ | |
ac484963 | 802 | entries = line_count * cpp * crtc->cursor->state->crtc_w; |
b445e3b0 ED |
803 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); |
804 | *cursor_wm = entries + cursor->guard_size; | |
805 | ||
806 | return g4x_check_srwm(dev, | |
807 | *display_wm, *cursor_wm, | |
808 | display, cursor); | |
809 | } | |
810 | ||
15665979 VS |
811 | #define FW_WM_VLV(value, plane) \ |
812 | (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK_VLV) | |
813 | ||
0018fda1 VS |
814 | static void vlv_write_wm_values(struct intel_crtc *crtc, |
815 | const struct vlv_wm_values *wm) | |
816 | { | |
817 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
818 | enum pipe pipe = crtc->pipe; | |
819 | ||
820 | I915_WRITE(VLV_DDL(pipe), | |
821 | (wm->ddl[pipe].cursor << DDL_CURSOR_SHIFT) | | |
822 | (wm->ddl[pipe].sprite[1] << DDL_SPRITE_SHIFT(1)) | | |
823 | (wm->ddl[pipe].sprite[0] << DDL_SPRITE_SHIFT(0)) | | |
824 | (wm->ddl[pipe].primary << DDL_PLANE_SHIFT)); | |
825 | ||
ae80152d | 826 | I915_WRITE(DSPFW1, |
15665979 VS |
827 | FW_WM(wm->sr.plane, SR) | |
828 | FW_WM(wm->pipe[PIPE_B].cursor, CURSORB) | | |
829 | FW_WM_VLV(wm->pipe[PIPE_B].primary, PLANEB) | | |
830 | FW_WM_VLV(wm->pipe[PIPE_A].primary, PLANEA)); | |
ae80152d | 831 | I915_WRITE(DSPFW2, |
15665979 VS |
832 | FW_WM_VLV(wm->pipe[PIPE_A].sprite[1], SPRITEB) | |
833 | FW_WM(wm->pipe[PIPE_A].cursor, CURSORA) | | |
834 | FW_WM_VLV(wm->pipe[PIPE_A].sprite[0], SPRITEA)); | |
ae80152d | 835 | I915_WRITE(DSPFW3, |
15665979 | 836 | FW_WM(wm->sr.cursor, CURSOR_SR)); |
ae80152d VS |
837 | |
838 | if (IS_CHERRYVIEW(dev_priv)) { | |
839 | I915_WRITE(DSPFW7_CHV, | |
15665979 VS |
840 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[1], SPRITED) | |
841 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[0], SPRITEC)); | |
ae80152d | 842 | I915_WRITE(DSPFW8_CHV, |
15665979 VS |
843 | FW_WM_VLV(wm->pipe[PIPE_C].sprite[1], SPRITEF) | |
844 | FW_WM_VLV(wm->pipe[PIPE_C].sprite[0], SPRITEE)); | |
ae80152d | 845 | I915_WRITE(DSPFW9_CHV, |
15665979 VS |
846 | FW_WM_VLV(wm->pipe[PIPE_C].primary, PLANEC) | |
847 | FW_WM(wm->pipe[PIPE_C].cursor, CURSORC)); | |
ae80152d | 848 | I915_WRITE(DSPHOWM, |
15665979 VS |
849 | FW_WM(wm->sr.plane >> 9, SR_HI) | |
850 | FW_WM(wm->pipe[PIPE_C].sprite[1] >> 8, SPRITEF_HI) | | |
851 | FW_WM(wm->pipe[PIPE_C].sprite[0] >> 8, SPRITEE_HI) | | |
852 | FW_WM(wm->pipe[PIPE_C].primary >> 8, PLANEC_HI) | | |
853 | FW_WM(wm->pipe[PIPE_B].sprite[1] >> 8, SPRITED_HI) | | |
854 | FW_WM(wm->pipe[PIPE_B].sprite[0] >> 8, SPRITEC_HI) | | |
855 | FW_WM(wm->pipe[PIPE_B].primary >> 8, PLANEB_HI) | | |
856 | FW_WM(wm->pipe[PIPE_A].sprite[1] >> 8, SPRITEB_HI) | | |
857 | FW_WM(wm->pipe[PIPE_A].sprite[0] >> 8, SPRITEA_HI) | | |
858 | FW_WM(wm->pipe[PIPE_A].primary >> 8, PLANEA_HI)); | |
ae80152d VS |
859 | } else { |
860 | I915_WRITE(DSPFW7, | |
15665979 VS |
861 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[1], SPRITED) | |
862 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[0], SPRITEC)); | |
ae80152d | 863 | I915_WRITE(DSPHOWM, |
15665979 VS |
864 | FW_WM(wm->sr.plane >> 9, SR_HI) | |
865 | FW_WM(wm->pipe[PIPE_B].sprite[1] >> 8, SPRITED_HI) | | |
866 | FW_WM(wm->pipe[PIPE_B].sprite[0] >> 8, SPRITEC_HI) | | |
867 | FW_WM(wm->pipe[PIPE_B].primary >> 8, PLANEB_HI) | | |
868 | FW_WM(wm->pipe[PIPE_A].sprite[1] >> 8, SPRITEB_HI) | | |
869 | FW_WM(wm->pipe[PIPE_A].sprite[0] >> 8, SPRITEA_HI) | | |
870 | FW_WM(wm->pipe[PIPE_A].primary >> 8, PLANEA_HI)); | |
ae80152d VS |
871 | } |
872 | ||
2cb389b7 VS |
873 | /* zero (unused) WM1 watermarks */ |
874 | I915_WRITE(DSPFW4, 0); | |
875 | I915_WRITE(DSPFW5, 0); | |
876 | I915_WRITE(DSPFW6, 0); | |
877 | I915_WRITE(DSPHOWM1, 0); | |
878 | ||
ae80152d | 879 | POSTING_READ(DSPFW1); |
0018fda1 VS |
880 | } |
881 | ||
15665979 VS |
882 | #undef FW_WM_VLV |
883 | ||
6eb1a681 VS |
884 | enum vlv_wm_level { |
885 | VLV_WM_LEVEL_PM2, | |
886 | VLV_WM_LEVEL_PM5, | |
887 | VLV_WM_LEVEL_DDR_DVFS, | |
6eb1a681 VS |
888 | }; |
889 | ||
262cd2e1 VS |
890 | /* latency must be in 0.1us units. */ |
891 | static unsigned int vlv_wm_method2(unsigned int pixel_rate, | |
892 | unsigned int pipe_htotal, | |
893 | unsigned int horiz_pixels, | |
ac484963 | 894 | unsigned int cpp, |
262cd2e1 VS |
895 | unsigned int latency) |
896 | { | |
897 | unsigned int ret; | |
898 | ||
899 | ret = (latency * pixel_rate) / (pipe_htotal * 10000); | |
ac484963 | 900 | ret = (ret + 1) * horiz_pixels * cpp; |
262cd2e1 VS |
901 | ret = DIV_ROUND_UP(ret, 64); |
902 | ||
903 | return ret; | |
904 | } | |
905 | ||
906 | static void vlv_setup_wm_latency(struct drm_device *dev) | |
907 | { | |
908 | struct drm_i915_private *dev_priv = dev->dev_private; | |
909 | ||
910 | /* all latencies in usec */ | |
911 | dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM2] = 3; | |
912 | ||
58590c14 VS |
913 | dev_priv->wm.max_level = VLV_WM_LEVEL_PM2; |
914 | ||
262cd2e1 VS |
915 | if (IS_CHERRYVIEW(dev_priv)) { |
916 | dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM5] = 12; | |
917 | dev_priv->wm.pri_latency[VLV_WM_LEVEL_DDR_DVFS] = 33; | |
58590c14 VS |
918 | |
919 | dev_priv->wm.max_level = VLV_WM_LEVEL_DDR_DVFS; | |
262cd2e1 VS |
920 | } |
921 | } | |
922 | ||
923 | static uint16_t vlv_compute_wm_level(struct intel_plane *plane, | |
924 | struct intel_crtc *crtc, | |
925 | const struct intel_plane_state *state, | |
926 | int level) | |
927 | { | |
928 | struct drm_i915_private *dev_priv = to_i915(plane->base.dev); | |
ac484963 | 929 | int clock, htotal, cpp, width, wm; |
262cd2e1 VS |
930 | |
931 | if (dev_priv->wm.pri_latency[level] == 0) | |
932 | return USHRT_MAX; | |
933 | ||
934 | if (!state->visible) | |
935 | return 0; | |
936 | ||
ac484963 | 937 | cpp = drm_format_plane_cpp(state->base.fb->pixel_format, 0); |
262cd2e1 VS |
938 | clock = crtc->config->base.adjusted_mode.crtc_clock; |
939 | htotal = crtc->config->base.adjusted_mode.crtc_htotal; | |
940 | width = crtc->config->pipe_src_w; | |
941 | if (WARN_ON(htotal == 0)) | |
942 | htotal = 1; | |
943 | ||
944 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) { | |
945 | /* | |
946 | * FIXME the formula gives values that are | |
947 | * too big for the cursor FIFO, and hence we | |
948 | * would never be able to use cursors. For | |
949 | * now just hardcode the watermark. | |
950 | */ | |
951 | wm = 63; | |
952 | } else { | |
ac484963 | 953 | wm = vlv_wm_method2(clock, htotal, width, cpp, |
262cd2e1 VS |
954 | dev_priv->wm.pri_latency[level] * 10); |
955 | } | |
956 | ||
957 | return min_t(int, wm, USHRT_MAX); | |
958 | } | |
959 | ||
54f1b6e1 VS |
960 | static void vlv_compute_fifo(struct intel_crtc *crtc) |
961 | { | |
962 | struct drm_device *dev = crtc->base.dev; | |
963 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
964 | struct intel_plane *plane; | |
965 | unsigned int total_rate = 0; | |
966 | const int fifo_size = 512 - 1; | |
967 | int fifo_extra, fifo_left = fifo_size; | |
968 | ||
969 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
970 | struct intel_plane_state *state = | |
971 | to_intel_plane_state(plane->base.state); | |
972 | ||
973 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) | |
974 | continue; | |
975 | ||
976 | if (state->visible) { | |
977 | wm_state->num_active_planes++; | |
978 | total_rate += drm_format_plane_cpp(state->base.fb->pixel_format, 0); | |
979 | } | |
980 | } | |
981 | ||
982 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
983 | struct intel_plane_state *state = | |
984 | to_intel_plane_state(plane->base.state); | |
985 | unsigned int rate; | |
986 | ||
987 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) { | |
988 | plane->wm.fifo_size = 63; | |
989 | continue; | |
990 | } | |
991 | ||
992 | if (!state->visible) { | |
993 | plane->wm.fifo_size = 0; | |
994 | continue; | |
995 | } | |
996 | ||
997 | rate = drm_format_plane_cpp(state->base.fb->pixel_format, 0); | |
998 | plane->wm.fifo_size = fifo_size * rate / total_rate; | |
999 | fifo_left -= plane->wm.fifo_size; | |
1000 | } | |
1001 | ||
1002 | fifo_extra = DIV_ROUND_UP(fifo_left, wm_state->num_active_planes ?: 1); | |
1003 | ||
1004 | /* spread the remainder evenly */ | |
1005 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1006 | int plane_extra; | |
1007 | ||
1008 | if (fifo_left == 0) | |
1009 | break; | |
1010 | ||
1011 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) | |
1012 | continue; | |
1013 | ||
1014 | /* give it all to the first plane if none are active */ | |
1015 | if (plane->wm.fifo_size == 0 && | |
1016 | wm_state->num_active_planes) | |
1017 | continue; | |
1018 | ||
1019 | plane_extra = min(fifo_extra, fifo_left); | |
1020 | plane->wm.fifo_size += plane_extra; | |
1021 | fifo_left -= plane_extra; | |
1022 | } | |
1023 | ||
1024 | WARN_ON(fifo_left != 0); | |
1025 | } | |
1026 | ||
262cd2e1 VS |
1027 | static void vlv_invert_wms(struct intel_crtc *crtc) |
1028 | { | |
1029 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1030 | int level; | |
1031 | ||
1032 | for (level = 0; level < wm_state->num_levels; level++) { | |
1033 | struct drm_device *dev = crtc->base.dev; | |
1034 | const int sr_fifo_size = INTEL_INFO(dev)->num_pipes * 512 - 1; | |
1035 | struct intel_plane *plane; | |
1036 | ||
1037 | wm_state->sr[level].plane = sr_fifo_size - wm_state->sr[level].plane; | |
1038 | wm_state->sr[level].cursor = 63 - wm_state->sr[level].cursor; | |
1039 | ||
1040 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1041 | switch (plane->base.type) { | |
1042 | int sprite; | |
1043 | case DRM_PLANE_TYPE_CURSOR: | |
1044 | wm_state->wm[level].cursor = plane->wm.fifo_size - | |
1045 | wm_state->wm[level].cursor; | |
1046 | break; | |
1047 | case DRM_PLANE_TYPE_PRIMARY: | |
1048 | wm_state->wm[level].primary = plane->wm.fifo_size - | |
1049 | wm_state->wm[level].primary; | |
1050 | break; | |
1051 | case DRM_PLANE_TYPE_OVERLAY: | |
1052 | sprite = plane->plane; | |
1053 | wm_state->wm[level].sprite[sprite] = plane->wm.fifo_size - | |
1054 | wm_state->wm[level].sprite[sprite]; | |
1055 | break; | |
1056 | } | |
1057 | } | |
1058 | } | |
1059 | } | |
1060 | ||
26e1fe4f | 1061 | static void vlv_compute_wm(struct intel_crtc *crtc) |
262cd2e1 VS |
1062 | { |
1063 | struct drm_device *dev = crtc->base.dev; | |
1064 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1065 | struct intel_plane *plane; | |
1066 | int sr_fifo_size = INTEL_INFO(dev)->num_pipes * 512 - 1; | |
1067 | int level; | |
1068 | ||
1069 | memset(wm_state, 0, sizeof(*wm_state)); | |
1070 | ||
852eb00d | 1071 | wm_state->cxsr = crtc->pipe != PIPE_C && crtc->wm.cxsr_allowed; |
58590c14 | 1072 | wm_state->num_levels = to_i915(dev)->wm.max_level + 1; |
262cd2e1 VS |
1073 | |
1074 | wm_state->num_active_planes = 0; | |
262cd2e1 | 1075 | |
54f1b6e1 | 1076 | vlv_compute_fifo(crtc); |
262cd2e1 VS |
1077 | |
1078 | if (wm_state->num_active_planes != 1) | |
1079 | wm_state->cxsr = false; | |
1080 | ||
1081 | if (wm_state->cxsr) { | |
1082 | for (level = 0; level < wm_state->num_levels; level++) { | |
1083 | wm_state->sr[level].plane = sr_fifo_size; | |
1084 | wm_state->sr[level].cursor = 63; | |
1085 | } | |
1086 | } | |
1087 | ||
1088 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1089 | struct intel_plane_state *state = | |
1090 | to_intel_plane_state(plane->base.state); | |
1091 | ||
1092 | if (!state->visible) | |
1093 | continue; | |
1094 | ||
1095 | /* normal watermarks */ | |
1096 | for (level = 0; level < wm_state->num_levels; level++) { | |
1097 | int wm = vlv_compute_wm_level(plane, crtc, state, level); | |
1098 | int max_wm = plane->base.type == DRM_PLANE_TYPE_CURSOR ? 63 : 511; | |
1099 | ||
1100 | /* hack */ | |
1101 | if (WARN_ON(level == 0 && wm > max_wm)) | |
1102 | wm = max_wm; | |
1103 | ||
1104 | if (wm > plane->wm.fifo_size) | |
1105 | break; | |
1106 | ||
1107 | switch (plane->base.type) { | |
1108 | int sprite; | |
1109 | case DRM_PLANE_TYPE_CURSOR: | |
1110 | wm_state->wm[level].cursor = wm; | |
1111 | break; | |
1112 | case DRM_PLANE_TYPE_PRIMARY: | |
1113 | wm_state->wm[level].primary = wm; | |
1114 | break; | |
1115 | case DRM_PLANE_TYPE_OVERLAY: | |
1116 | sprite = plane->plane; | |
1117 | wm_state->wm[level].sprite[sprite] = wm; | |
1118 | break; | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | wm_state->num_levels = level; | |
1123 | ||
1124 | if (!wm_state->cxsr) | |
1125 | continue; | |
1126 | ||
1127 | /* maxfifo watermarks */ | |
1128 | switch (plane->base.type) { | |
1129 | int sprite, level; | |
1130 | case DRM_PLANE_TYPE_CURSOR: | |
1131 | for (level = 0; level < wm_state->num_levels; level++) | |
1132 | wm_state->sr[level].cursor = | |
5a37ed0a | 1133 | wm_state->wm[level].cursor; |
262cd2e1 VS |
1134 | break; |
1135 | case DRM_PLANE_TYPE_PRIMARY: | |
1136 | for (level = 0; level < wm_state->num_levels; level++) | |
1137 | wm_state->sr[level].plane = | |
1138 | min(wm_state->sr[level].plane, | |
1139 | wm_state->wm[level].primary); | |
1140 | break; | |
1141 | case DRM_PLANE_TYPE_OVERLAY: | |
1142 | sprite = plane->plane; | |
1143 | for (level = 0; level < wm_state->num_levels; level++) | |
1144 | wm_state->sr[level].plane = | |
1145 | min(wm_state->sr[level].plane, | |
1146 | wm_state->wm[level].sprite[sprite]); | |
1147 | break; | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | /* clear any (partially) filled invalid levels */ | |
58590c14 | 1152 | for (level = wm_state->num_levels; level < to_i915(dev)->wm.max_level + 1; level++) { |
262cd2e1 VS |
1153 | memset(&wm_state->wm[level], 0, sizeof(wm_state->wm[level])); |
1154 | memset(&wm_state->sr[level], 0, sizeof(wm_state->sr[level])); | |
1155 | } | |
1156 | ||
1157 | vlv_invert_wms(crtc); | |
1158 | } | |
1159 | ||
54f1b6e1 VS |
1160 | #define VLV_FIFO(plane, value) \ |
1161 | (((value) << DSPARB_ ## plane ## _SHIFT_VLV) & DSPARB_ ## plane ## _MASK_VLV) | |
1162 | ||
1163 | static void vlv_pipe_set_fifo_size(struct intel_crtc *crtc) | |
1164 | { | |
1165 | struct drm_device *dev = crtc->base.dev; | |
1166 | struct drm_i915_private *dev_priv = to_i915(dev); | |
1167 | struct intel_plane *plane; | |
1168 | int sprite0_start = 0, sprite1_start = 0, fifo_size = 0; | |
1169 | ||
1170 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1171 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) { | |
1172 | WARN_ON(plane->wm.fifo_size != 63); | |
1173 | continue; | |
1174 | } | |
1175 | ||
1176 | if (plane->base.type == DRM_PLANE_TYPE_PRIMARY) | |
1177 | sprite0_start = plane->wm.fifo_size; | |
1178 | else if (plane->plane == 0) | |
1179 | sprite1_start = sprite0_start + plane->wm.fifo_size; | |
1180 | else | |
1181 | fifo_size = sprite1_start + plane->wm.fifo_size; | |
1182 | } | |
1183 | ||
1184 | WARN_ON(fifo_size != 512 - 1); | |
1185 | ||
1186 | DRM_DEBUG_KMS("Pipe %c FIFO split %d / %d / %d\n", | |
1187 | pipe_name(crtc->pipe), sprite0_start, | |
1188 | sprite1_start, fifo_size); | |
1189 | ||
1190 | switch (crtc->pipe) { | |
1191 | uint32_t dsparb, dsparb2, dsparb3; | |
1192 | case PIPE_A: | |
1193 | dsparb = I915_READ(DSPARB); | |
1194 | dsparb2 = I915_READ(DSPARB2); | |
1195 | ||
1196 | dsparb &= ~(VLV_FIFO(SPRITEA, 0xff) | | |
1197 | VLV_FIFO(SPRITEB, 0xff)); | |
1198 | dsparb |= (VLV_FIFO(SPRITEA, sprite0_start) | | |
1199 | VLV_FIFO(SPRITEB, sprite1_start)); | |
1200 | ||
1201 | dsparb2 &= ~(VLV_FIFO(SPRITEA_HI, 0x1) | | |
1202 | VLV_FIFO(SPRITEB_HI, 0x1)); | |
1203 | dsparb2 |= (VLV_FIFO(SPRITEA_HI, sprite0_start >> 8) | | |
1204 | VLV_FIFO(SPRITEB_HI, sprite1_start >> 8)); | |
1205 | ||
1206 | I915_WRITE(DSPARB, dsparb); | |
1207 | I915_WRITE(DSPARB2, dsparb2); | |
1208 | break; | |
1209 | case PIPE_B: | |
1210 | dsparb = I915_READ(DSPARB); | |
1211 | dsparb2 = I915_READ(DSPARB2); | |
1212 | ||
1213 | dsparb &= ~(VLV_FIFO(SPRITEC, 0xff) | | |
1214 | VLV_FIFO(SPRITED, 0xff)); | |
1215 | dsparb |= (VLV_FIFO(SPRITEC, sprite0_start) | | |
1216 | VLV_FIFO(SPRITED, sprite1_start)); | |
1217 | ||
1218 | dsparb2 &= ~(VLV_FIFO(SPRITEC_HI, 0xff) | | |
1219 | VLV_FIFO(SPRITED_HI, 0xff)); | |
1220 | dsparb2 |= (VLV_FIFO(SPRITEC_HI, sprite0_start >> 8) | | |
1221 | VLV_FIFO(SPRITED_HI, sprite1_start >> 8)); | |
1222 | ||
1223 | I915_WRITE(DSPARB, dsparb); | |
1224 | I915_WRITE(DSPARB2, dsparb2); | |
1225 | break; | |
1226 | case PIPE_C: | |
1227 | dsparb3 = I915_READ(DSPARB3); | |
1228 | dsparb2 = I915_READ(DSPARB2); | |
1229 | ||
1230 | dsparb3 &= ~(VLV_FIFO(SPRITEE, 0xff) | | |
1231 | VLV_FIFO(SPRITEF, 0xff)); | |
1232 | dsparb3 |= (VLV_FIFO(SPRITEE, sprite0_start) | | |
1233 | VLV_FIFO(SPRITEF, sprite1_start)); | |
1234 | ||
1235 | dsparb2 &= ~(VLV_FIFO(SPRITEE_HI, 0xff) | | |
1236 | VLV_FIFO(SPRITEF_HI, 0xff)); | |
1237 | dsparb2 |= (VLV_FIFO(SPRITEE_HI, sprite0_start >> 8) | | |
1238 | VLV_FIFO(SPRITEF_HI, sprite1_start >> 8)); | |
1239 | ||
1240 | I915_WRITE(DSPARB3, dsparb3); | |
1241 | I915_WRITE(DSPARB2, dsparb2); | |
1242 | break; | |
1243 | default: | |
1244 | break; | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | #undef VLV_FIFO | |
1249 | ||
262cd2e1 VS |
1250 | static void vlv_merge_wm(struct drm_device *dev, |
1251 | struct vlv_wm_values *wm) | |
1252 | { | |
1253 | struct intel_crtc *crtc; | |
1254 | int num_active_crtcs = 0; | |
1255 | ||
58590c14 | 1256 | wm->level = to_i915(dev)->wm.max_level; |
262cd2e1 VS |
1257 | wm->cxsr = true; |
1258 | ||
1259 | for_each_intel_crtc(dev, crtc) { | |
1260 | const struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1261 | ||
1262 | if (!crtc->active) | |
1263 | continue; | |
1264 | ||
1265 | if (!wm_state->cxsr) | |
1266 | wm->cxsr = false; | |
1267 | ||
1268 | num_active_crtcs++; | |
1269 | wm->level = min_t(int, wm->level, wm_state->num_levels - 1); | |
1270 | } | |
1271 | ||
1272 | if (num_active_crtcs != 1) | |
1273 | wm->cxsr = false; | |
1274 | ||
6f9c784b VS |
1275 | if (num_active_crtcs > 1) |
1276 | wm->level = VLV_WM_LEVEL_PM2; | |
1277 | ||
262cd2e1 VS |
1278 | for_each_intel_crtc(dev, crtc) { |
1279 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1280 | enum pipe pipe = crtc->pipe; | |
1281 | ||
1282 | if (!crtc->active) | |
1283 | continue; | |
1284 | ||
1285 | wm->pipe[pipe] = wm_state->wm[wm->level]; | |
1286 | if (wm->cxsr) | |
1287 | wm->sr = wm_state->sr[wm->level]; | |
1288 | ||
1289 | wm->ddl[pipe].primary = DDL_PRECISION_HIGH | 2; | |
1290 | wm->ddl[pipe].sprite[0] = DDL_PRECISION_HIGH | 2; | |
1291 | wm->ddl[pipe].sprite[1] = DDL_PRECISION_HIGH | 2; | |
1292 | wm->ddl[pipe].cursor = DDL_PRECISION_HIGH | 2; | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | static void vlv_update_wm(struct drm_crtc *crtc) | |
1297 | { | |
1298 | struct drm_device *dev = crtc->dev; | |
1299 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1300 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1301 | enum pipe pipe = intel_crtc->pipe; | |
1302 | struct vlv_wm_values wm = {}; | |
1303 | ||
26e1fe4f | 1304 | vlv_compute_wm(intel_crtc); |
262cd2e1 VS |
1305 | vlv_merge_wm(dev, &wm); |
1306 | ||
54f1b6e1 VS |
1307 | if (memcmp(&dev_priv->wm.vlv, &wm, sizeof(wm)) == 0) { |
1308 | /* FIXME should be part of crtc atomic commit */ | |
1309 | vlv_pipe_set_fifo_size(intel_crtc); | |
262cd2e1 | 1310 | return; |
54f1b6e1 | 1311 | } |
262cd2e1 VS |
1312 | |
1313 | if (wm.level < VLV_WM_LEVEL_DDR_DVFS && | |
1314 | dev_priv->wm.vlv.level >= VLV_WM_LEVEL_DDR_DVFS) | |
1315 | chv_set_memory_dvfs(dev_priv, false); | |
1316 | ||
1317 | if (wm.level < VLV_WM_LEVEL_PM5 && | |
1318 | dev_priv->wm.vlv.level >= VLV_WM_LEVEL_PM5) | |
1319 | chv_set_memory_pm5(dev_priv, false); | |
1320 | ||
852eb00d | 1321 | if (!wm.cxsr && dev_priv->wm.vlv.cxsr) |
262cd2e1 | 1322 | intel_set_memory_cxsr(dev_priv, false); |
262cd2e1 | 1323 | |
54f1b6e1 VS |
1324 | /* FIXME should be part of crtc atomic commit */ |
1325 | vlv_pipe_set_fifo_size(intel_crtc); | |
1326 | ||
262cd2e1 VS |
1327 | vlv_write_wm_values(intel_crtc, &wm); |
1328 | ||
1329 | DRM_DEBUG_KMS("Setting FIFO watermarks - %c: plane=%d, cursor=%d, " | |
1330 | "sprite0=%d, sprite1=%d, SR: plane=%d, cursor=%d level=%d cxsr=%d\n", | |
1331 | pipe_name(pipe), wm.pipe[pipe].primary, wm.pipe[pipe].cursor, | |
1332 | wm.pipe[pipe].sprite[0], wm.pipe[pipe].sprite[1], | |
1333 | wm.sr.plane, wm.sr.cursor, wm.level, wm.cxsr); | |
1334 | ||
852eb00d | 1335 | if (wm.cxsr && !dev_priv->wm.vlv.cxsr) |
262cd2e1 | 1336 | intel_set_memory_cxsr(dev_priv, true); |
262cd2e1 VS |
1337 | |
1338 | if (wm.level >= VLV_WM_LEVEL_PM5 && | |
1339 | dev_priv->wm.vlv.level < VLV_WM_LEVEL_PM5) | |
1340 | chv_set_memory_pm5(dev_priv, true); | |
1341 | ||
1342 | if (wm.level >= VLV_WM_LEVEL_DDR_DVFS && | |
1343 | dev_priv->wm.vlv.level < VLV_WM_LEVEL_DDR_DVFS) | |
1344 | chv_set_memory_dvfs(dev_priv, true); | |
1345 | ||
1346 | dev_priv->wm.vlv = wm; | |
3c2777fd VS |
1347 | } |
1348 | ||
ae80152d VS |
1349 | #define single_plane_enabled(mask) is_power_of_2(mask) |
1350 | ||
46ba614c | 1351 | static void g4x_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1352 | { |
46ba614c | 1353 | struct drm_device *dev = crtc->dev; |
b445e3b0 ED |
1354 | static const int sr_latency_ns = 12000; |
1355 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1356 | int planea_wm, planeb_wm, cursora_wm, cursorb_wm; | |
1357 | int plane_sr, cursor_sr; | |
1358 | unsigned int enabled = 0; | |
9858425c | 1359 | bool cxsr_enabled; |
b445e3b0 | 1360 | |
51cea1f4 | 1361 | if (g4x_compute_wm0(dev, PIPE_A, |
5aef6003 CW |
1362 | &g4x_wm_info, pessimal_latency_ns, |
1363 | &g4x_cursor_wm_info, pessimal_latency_ns, | |
b445e3b0 | 1364 | &planea_wm, &cursora_wm)) |
51cea1f4 | 1365 | enabled |= 1 << PIPE_A; |
b445e3b0 | 1366 | |
51cea1f4 | 1367 | if (g4x_compute_wm0(dev, PIPE_B, |
5aef6003 CW |
1368 | &g4x_wm_info, pessimal_latency_ns, |
1369 | &g4x_cursor_wm_info, pessimal_latency_ns, | |
b445e3b0 | 1370 | &planeb_wm, &cursorb_wm)) |
51cea1f4 | 1371 | enabled |= 1 << PIPE_B; |
b445e3b0 | 1372 | |
b445e3b0 ED |
1373 | if (single_plane_enabled(enabled) && |
1374 | g4x_compute_srwm(dev, ffs(enabled) - 1, | |
1375 | sr_latency_ns, | |
1376 | &g4x_wm_info, | |
1377 | &g4x_cursor_wm_info, | |
52bd02d8 | 1378 | &plane_sr, &cursor_sr)) { |
9858425c | 1379 | cxsr_enabled = true; |
52bd02d8 | 1380 | } else { |
9858425c | 1381 | cxsr_enabled = false; |
5209b1f4 | 1382 | intel_set_memory_cxsr(dev_priv, false); |
52bd02d8 CW |
1383 | plane_sr = cursor_sr = 0; |
1384 | } | |
b445e3b0 | 1385 | |
a5043453 VS |
1386 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, " |
1387 | "B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n", | |
b445e3b0 ED |
1388 | planea_wm, cursora_wm, |
1389 | planeb_wm, cursorb_wm, | |
1390 | plane_sr, cursor_sr); | |
1391 | ||
1392 | I915_WRITE(DSPFW1, | |
f4998963 VS |
1393 | FW_WM(plane_sr, SR) | |
1394 | FW_WM(cursorb_wm, CURSORB) | | |
1395 | FW_WM(planeb_wm, PLANEB) | | |
1396 | FW_WM(planea_wm, PLANEA)); | |
b445e3b0 | 1397 | I915_WRITE(DSPFW2, |
8c919b28 | 1398 | (I915_READ(DSPFW2) & ~DSPFW_CURSORA_MASK) | |
f4998963 | 1399 | FW_WM(cursora_wm, CURSORA)); |
b445e3b0 ED |
1400 | /* HPLL off in SR has some issues on G4x... disable it */ |
1401 | I915_WRITE(DSPFW3, | |
8c919b28 | 1402 | (I915_READ(DSPFW3) & ~(DSPFW_HPLL_SR_EN | DSPFW_CURSOR_SR_MASK)) | |
f4998963 | 1403 | FW_WM(cursor_sr, CURSOR_SR)); |
9858425c ID |
1404 | |
1405 | if (cxsr_enabled) | |
1406 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1407 | } |
1408 | ||
46ba614c | 1409 | static void i965_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1410 | { |
46ba614c | 1411 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1412 | struct drm_i915_private *dev_priv = dev->dev_private; |
1413 | struct drm_crtc *crtc; | |
1414 | int srwm = 1; | |
1415 | int cursor_sr = 16; | |
9858425c | 1416 | bool cxsr_enabled; |
b445e3b0 ED |
1417 | |
1418 | /* Calc sr entries for one plane configs */ | |
1419 | crtc = single_enabled_crtc(dev); | |
1420 | if (crtc) { | |
1421 | /* self-refresh has much higher latency */ | |
1422 | static const int sr_latency_ns = 12000; | |
124abe07 | 1423 | const struct drm_display_mode *adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1424 | int clock = adjusted_mode->crtc_clock; |
fec8cba3 | 1425 | int htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 1426 | int hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
ac484963 | 1427 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b445e3b0 ED |
1428 | unsigned long line_time_us; |
1429 | int entries; | |
1430 | ||
922044c9 | 1431 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 ED |
1432 | |
1433 | /* Use ns/us then divide to preserve precision */ | |
1434 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
ac484963 | 1435 | cpp * hdisplay; |
b445e3b0 ED |
1436 | entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE); |
1437 | srwm = I965_FIFO_SIZE - entries; | |
1438 | if (srwm < 0) | |
1439 | srwm = 1; | |
1440 | srwm &= 0x1ff; | |
1441 | DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n", | |
1442 | entries, srwm); | |
1443 | ||
1444 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
ac484963 | 1445 | cpp * crtc->cursor->state->crtc_w; |
b445e3b0 ED |
1446 | entries = DIV_ROUND_UP(entries, |
1447 | i965_cursor_wm_info.cacheline_size); | |
1448 | cursor_sr = i965_cursor_wm_info.fifo_size - | |
1449 | (entries + i965_cursor_wm_info.guard_size); | |
1450 | ||
1451 | if (cursor_sr > i965_cursor_wm_info.max_wm) | |
1452 | cursor_sr = i965_cursor_wm_info.max_wm; | |
1453 | ||
1454 | DRM_DEBUG_KMS("self-refresh watermark: display plane %d " | |
1455 | "cursor %d\n", srwm, cursor_sr); | |
1456 | ||
9858425c | 1457 | cxsr_enabled = true; |
b445e3b0 | 1458 | } else { |
9858425c | 1459 | cxsr_enabled = false; |
b445e3b0 | 1460 | /* Turn off self refresh if both pipes are enabled */ |
5209b1f4 | 1461 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
1462 | } |
1463 | ||
1464 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n", | |
1465 | srwm); | |
1466 | ||
1467 | /* 965 has limitations... */ | |
f4998963 VS |
1468 | I915_WRITE(DSPFW1, FW_WM(srwm, SR) | |
1469 | FW_WM(8, CURSORB) | | |
1470 | FW_WM(8, PLANEB) | | |
1471 | FW_WM(8, PLANEA)); | |
1472 | I915_WRITE(DSPFW2, FW_WM(8, CURSORA) | | |
1473 | FW_WM(8, PLANEC_OLD)); | |
b445e3b0 | 1474 | /* update cursor SR watermark */ |
f4998963 | 1475 | I915_WRITE(DSPFW3, FW_WM(cursor_sr, CURSOR_SR)); |
9858425c ID |
1476 | |
1477 | if (cxsr_enabled) | |
1478 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1479 | } |
1480 | ||
f4998963 VS |
1481 | #undef FW_WM |
1482 | ||
46ba614c | 1483 | static void i9xx_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1484 | { |
46ba614c | 1485 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1486 | struct drm_i915_private *dev_priv = dev->dev_private; |
1487 | const struct intel_watermark_params *wm_info; | |
1488 | uint32_t fwater_lo; | |
1489 | uint32_t fwater_hi; | |
1490 | int cwm, srwm = 1; | |
1491 | int fifo_size; | |
1492 | int planea_wm, planeb_wm; | |
1493 | struct drm_crtc *crtc, *enabled = NULL; | |
1494 | ||
1495 | if (IS_I945GM(dev)) | |
1496 | wm_info = &i945_wm_info; | |
1497 | else if (!IS_GEN2(dev)) | |
1498 | wm_info = &i915_wm_info; | |
1499 | else | |
9d539105 | 1500 | wm_info = &i830_a_wm_info; |
b445e3b0 ED |
1501 | |
1502 | fifo_size = dev_priv->display.get_fifo_size(dev, 0); | |
1503 | crtc = intel_get_crtc_for_plane(dev, 0); | |
3490ea5d | 1504 | if (intel_crtc_active(crtc)) { |
241bfc38 | 1505 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 1506 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b9e0bda3 CW |
1507 | if (IS_GEN2(dev)) |
1508 | cpp = 4; | |
1509 | ||
6e3c9717 | 1510 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1511 | planea_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
b9e0bda3 | 1512 | wm_info, fifo_size, cpp, |
5aef6003 | 1513 | pessimal_latency_ns); |
b445e3b0 | 1514 | enabled = crtc; |
9d539105 | 1515 | } else { |
b445e3b0 | 1516 | planea_wm = fifo_size - wm_info->guard_size; |
9d539105 VS |
1517 | if (planea_wm > (long)wm_info->max_wm) |
1518 | planea_wm = wm_info->max_wm; | |
1519 | } | |
1520 | ||
1521 | if (IS_GEN2(dev)) | |
1522 | wm_info = &i830_bc_wm_info; | |
b445e3b0 ED |
1523 | |
1524 | fifo_size = dev_priv->display.get_fifo_size(dev, 1); | |
1525 | crtc = intel_get_crtc_for_plane(dev, 1); | |
3490ea5d | 1526 | if (intel_crtc_active(crtc)) { |
241bfc38 | 1527 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 1528 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b9e0bda3 CW |
1529 | if (IS_GEN2(dev)) |
1530 | cpp = 4; | |
1531 | ||
6e3c9717 | 1532 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1533 | planeb_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
b9e0bda3 | 1534 | wm_info, fifo_size, cpp, |
5aef6003 | 1535 | pessimal_latency_ns); |
b445e3b0 ED |
1536 | if (enabled == NULL) |
1537 | enabled = crtc; | |
1538 | else | |
1539 | enabled = NULL; | |
9d539105 | 1540 | } else { |
b445e3b0 | 1541 | planeb_wm = fifo_size - wm_info->guard_size; |
9d539105 VS |
1542 | if (planeb_wm > (long)wm_info->max_wm) |
1543 | planeb_wm = wm_info->max_wm; | |
1544 | } | |
b445e3b0 ED |
1545 | |
1546 | DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm); | |
1547 | ||
2ab1bc9d | 1548 | if (IS_I915GM(dev) && enabled) { |
2ff8fde1 | 1549 | struct drm_i915_gem_object *obj; |
2ab1bc9d | 1550 | |
59bea882 | 1551 | obj = intel_fb_obj(enabled->primary->state->fb); |
2ab1bc9d DV |
1552 | |
1553 | /* self-refresh seems busted with untiled */ | |
2ff8fde1 | 1554 | if (obj->tiling_mode == I915_TILING_NONE) |
2ab1bc9d DV |
1555 | enabled = NULL; |
1556 | } | |
1557 | ||
b445e3b0 ED |
1558 | /* |
1559 | * Overlay gets an aggressive default since video jitter is bad. | |
1560 | */ | |
1561 | cwm = 2; | |
1562 | ||
1563 | /* Play safe and disable self-refresh before adjusting watermarks. */ | |
5209b1f4 | 1564 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
1565 | |
1566 | /* Calc sr entries for one plane configs */ | |
1567 | if (HAS_FW_BLC(dev) && enabled) { | |
1568 | /* self-refresh has much higher latency */ | |
1569 | static const int sr_latency_ns = 6000; | |
124abe07 | 1570 | const struct drm_display_mode *adjusted_mode = &to_intel_crtc(enabled)->config->base.adjusted_mode; |
241bfc38 | 1571 | int clock = adjusted_mode->crtc_clock; |
fec8cba3 | 1572 | int htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 1573 | int hdisplay = to_intel_crtc(enabled)->config->pipe_src_w; |
ac484963 | 1574 | int cpp = drm_format_plane_cpp(enabled->primary->state->fb->pixel_format, 0); |
b445e3b0 ED |
1575 | unsigned long line_time_us; |
1576 | int entries; | |
1577 | ||
922044c9 | 1578 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 ED |
1579 | |
1580 | /* Use ns/us then divide to preserve precision */ | |
1581 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
ac484963 | 1582 | cpp * hdisplay; |
b445e3b0 ED |
1583 | entries = DIV_ROUND_UP(entries, wm_info->cacheline_size); |
1584 | DRM_DEBUG_KMS("self-refresh entries: %d\n", entries); | |
1585 | srwm = wm_info->fifo_size - entries; | |
1586 | if (srwm < 0) | |
1587 | srwm = 1; | |
1588 | ||
1589 | if (IS_I945G(dev) || IS_I945GM(dev)) | |
1590 | I915_WRITE(FW_BLC_SELF, | |
1591 | FW_BLC_SELF_FIFO_MASK | (srwm & 0xff)); | |
1592 | else if (IS_I915GM(dev)) | |
1593 | I915_WRITE(FW_BLC_SELF, srwm & 0x3f); | |
1594 | } | |
1595 | ||
1596 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n", | |
1597 | planea_wm, planeb_wm, cwm, srwm); | |
1598 | ||
1599 | fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f); | |
1600 | fwater_hi = (cwm & 0x1f); | |
1601 | ||
1602 | /* Set request length to 8 cachelines per fetch */ | |
1603 | fwater_lo = fwater_lo | (1 << 24) | (1 << 8); | |
1604 | fwater_hi = fwater_hi | (1 << 8); | |
1605 | ||
1606 | I915_WRITE(FW_BLC, fwater_lo); | |
1607 | I915_WRITE(FW_BLC2, fwater_hi); | |
1608 | ||
5209b1f4 ID |
1609 | if (enabled) |
1610 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1611 | } |
1612 | ||
feb56b93 | 1613 | static void i845_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1614 | { |
46ba614c | 1615 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1616 | struct drm_i915_private *dev_priv = dev->dev_private; |
1617 | struct drm_crtc *crtc; | |
241bfc38 | 1618 | const struct drm_display_mode *adjusted_mode; |
b445e3b0 ED |
1619 | uint32_t fwater_lo; |
1620 | int planea_wm; | |
1621 | ||
1622 | crtc = single_enabled_crtc(dev); | |
1623 | if (crtc == NULL) | |
1624 | return; | |
1625 | ||
6e3c9717 | 1626 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1627 | planea_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
feb56b93 | 1628 | &i845_wm_info, |
b445e3b0 | 1629 | dev_priv->display.get_fifo_size(dev, 0), |
5aef6003 | 1630 | 4, pessimal_latency_ns); |
b445e3b0 ED |
1631 | fwater_lo = I915_READ(FW_BLC) & ~0xfff; |
1632 | fwater_lo |= (3<<8) | planea_wm; | |
1633 | ||
1634 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm); | |
1635 | ||
1636 | I915_WRITE(FW_BLC, fwater_lo); | |
1637 | } | |
1638 | ||
8cfb3407 | 1639 | uint32_t ilk_pipe_pixel_rate(const struct intel_crtc_state *pipe_config) |
801bcfff | 1640 | { |
fd4daa9c | 1641 | uint32_t pixel_rate; |
801bcfff | 1642 | |
8cfb3407 | 1643 | pixel_rate = pipe_config->base.adjusted_mode.crtc_clock; |
801bcfff PZ |
1644 | |
1645 | /* We only use IF-ID interlacing. If we ever use PF-ID we'll need to | |
1646 | * adjust the pixel_rate here. */ | |
1647 | ||
8cfb3407 | 1648 | if (pipe_config->pch_pfit.enabled) { |
801bcfff | 1649 | uint64_t pipe_w, pipe_h, pfit_w, pfit_h; |
8cfb3407 VS |
1650 | uint32_t pfit_size = pipe_config->pch_pfit.size; |
1651 | ||
1652 | pipe_w = pipe_config->pipe_src_w; | |
1653 | pipe_h = pipe_config->pipe_src_h; | |
801bcfff | 1654 | |
801bcfff PZ |
1655 | pfit_w = (pfit_size >> 16) & 0xFFFF; |
1656 | pfit_h = pfit_size & 0xFFFF; | |
1657 | if (pipe_w < pfit_w) | |
1658 | pipe_w = pfit_w; | |
1659 | if (pipe_h < pfit_h) | |
1660 | pipe_h = pfit_h; | |
1661 | ||
15126882 MR |
1662 | if (WARN_ON(!pfit_w || !pfit_h)) |
1663 | return pixel_rate; | |
1664 | ||
801bcfff PZ |
1665 | pixel_rate = div_u64((uint64_t) pixel_rate * pipe_w * pipe_h, |
1666 | pfit_w * pfit_h); | |
1667 | } | |
1668 | ||
1669 | return pixel_rate; | |
1670 | } | |
1671 | ||
37126462 | 1672 | /* latency must be in 0.1us units. */ |
ac484963 | 1673 | static uint32_t ilk_wm_method1(uint32_t pixel_rate, uint8_t cpp, uint32_t latency) |
801bcfff PZ |
1674 | { |
1675 | uint64_t ret; | |
1676 | ||
3312ba65 VS |
1677 | if (WARN(latency == 0, "Latency value missing\n")) |
1678 | return UINT_MAX; | |
1679 | ||
ac484963 | 1680 | ret = (uint64_t) pixel_rate * cpp * latency; |
801bcfff PZ |
1681 | ret = DIV_ROUND_UP_ULL(ret, 64 * 10000) + 2; |
1682 | ||
1683 | return ret; | |
1684 | } | |
1685 | ||
37126462 | 1686 | /* latency must be in 0.1us units. */ |
23297044 | 1687 | static uint32_t ilk_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, |
ac484963 | 1688 | uint32_t horiz_pixels, uint8_t cpp, |
801bcfff PZ |
1689 | uint32_t latency) |
1690 | { | |
1691 | uint32_t ret; | |
1692 | ||
3312ba65 VS |
1693 | if (WARN(latency == 0, "Latency value missing\n")) |
1694 | return UINT_MAX; | |
15126882 MR |
1695 | if (WARN_ON(!pipe_htotal)) |
1696 | return UINT_MAX; | |
3312ba65 | 1697 | |
801bcfff | 1698 | ret = (latency * pixel_rate) / (pipe_htotal * 10000); |
ac484963 | 1699 | ret = (ret + 1) * horiz_pixels * cpp; |
801bcfff PZ |
1700 | ret = DIV_ROUND_UP(ret, 64) + 2; |
1701 | return ret; | |
1702 | } | |
1703 | ||
23297044 | 1704 | static uint32_t ilk_wm_fbc(uint32_t pri_val, uint32_t horiz_pixels, |
ac484963 | 1705 | uint8_t cpp) |
cca32e9a | 1706 | { |
15126882 MR |
1707 | /* |
1708 | * Neither of these should be possible since this function shouldn't be | |
1709 | * called if the CRTC is off or the plane is invisible. But let's be | |
1710 | * extra paranoid to avoid a potential divide-by-zero if we screw up | |
1711 | * elsewhere in the driver. | |
1712 | */ | |
ac484963 | 1713 | if (WARN_ON(!cpp)) |
15126882 MR |
1714 | return 0; |
1715 | if (WARN_ON(!horiz_pixels)) | |
1716 | return 0; | |
1717 | ||
ac484963 | 1718 | return DIV_ROUND_UP(pri_val * 64, horiz_pixels * cpp) + 2; |
cca32e9a PZ |
1719 | } |
1720 | ||
820c1980 | 1721 | struct ilk_wm_maximums { |
cca32e9a PZ |
1722 | uint16_t pri; |
1723 | uint16_t spr; | |
1724 | uint16_t cur; | |
1725 | uint16_t fbc; | |
1726 | }; | |
1727 | ||
37126462 VS |
1728 | /* |
1729 | * For both WM_PIPE and WM_LP. | |
1730 | * mem_value must be in 0.1us units. | |
1731 | */ | |
7221fc33 | 1732 | static uint32_t ilk_compute_pri_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1733 | const struct intel_plane_state *pstate, |
cca32e9a PZ |
1734 | uint32_t mem_value, |
1735 | bool is_lp) | |
801bcfff | 1736 | { |
ac484963 VS |
1737 | int cpp = pstate->base.fb ? |
1738 | drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0; | |
cca32e9a PZ |
1739 | uint32_t method1, method2; |
1740 | ||
7221fc33 | 1741 | if (!cstate->base.active || !pstate->visible) |
801bcfff PZ |
1742 | return 0; |
1743 | ||
ac484963 | 1744 | method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), cpp, mem_value); |
cca32e9a PZ |
1745 | |
1746 | if (!is_lp) | |
1747 | return method1; | |
1748 | ||
7221fc33 MR |
1749 | method2 = ilk_wm_method2(ilk_pipe_pixel_rate(cstate), |
1750 | cstate->base.adjusted_mode.crtc_htotal, | |
43d59eda | 1751 | drm_rect_width(&pstate->dst), |
ac484963 | 1752 | cpp, mem_value); |
cca32e9a PZ |
1753 | |
1754 | return min(method1, method2); | |
801bcfff PZ |
1755 | } |
1756 | ||
37126462 VS |
1757 | /* |
1758 | * For both WM_PIPE and WM_LP. | |
1759 | * mem_value must be in 0.1us units. | |
1760 | */ | |
7221fc33 | 1761 | static uint32_t ilk_compute_spr_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1762 | const struct intel_plane_state *pstate, |
801bcfff PZ |
1763 | uint32_t mem_value) |
1764 | { | |
ac484963 VS |
1765 | int cpp = pstate->base.fb ? |
1766 | drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0; | |
801bcfff PZ |
1767 | uint32_t method1, method2; |
1768 | ||
7221fc33 | 1769 | if (!cstate->base.active || !pstate->visible) |
801bcfff PZ |
1770 | return 0; |
1771 | ||
ac484963 | 1772 | method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), cpp, mem_value); |
7221fc33 MR |
1773 | method2 = ilk_wm_method2(ilk_pipe_pixel_rate(cstate), |
1774 | cstate->base.adjusted_mode.crtc_htotal, | |
43d59eda | 1775 | drm_rect_width(&pstate->dst), |
ac484963 | 1776 | cpp, mem_value); |
801bcfff PZ |
1777 | return min(method1, method2); |
1778 | } | |
1779 | ||
37126462 VS |
1780 | /* |
1781 | * For both WM_PIPE and WM_LP. | |
1782 | * mem_value must be in 0.1us units. | |
1783 | */ | |
7221fc33 | 1784 | static uint32_t ilk_compute_cur_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1785 | const struct intel_plane_state *pstate, |
801bcfff PZ |
1786 | uint32_t mem_value) |
1787 | { | |
b2435692 MR |
1788 | /* |
1789 | * We treat the cursor plane as always-on for the purposes of watermark | |
1790 | * calculation. Until we have two-stage watermark programming merged, | |
1791 | * this is necessary to avoid flickering. | |
1792 | */ | |
1793 | int cpp = 4; | |
1794 | int width = pstate->visible ? pstate->base.crtc_w : 64; | |
43d59eda | 1795 | |
b2435692 | 1796 | if (!cstate->base.active) |
801bcfff PZ |
1797 | return 0; |
1798 | ||
7221fc33 MR |
1799 | return ilk_wm_method2(ilk_pipe_pixel_rate(cstate), |
1800 | cstate->base.adjusted_mode.crtc_htotal, | |
b2435692 | 1801 | width, cpp, mem_value); |
801bcfff PZ |
1802 | } |
1803 | ||
cca32e9a | 1804 | /* Only for WM_LP. */ |
7221fc33 | 1805 | static uint32_t ilk_compute_fbc_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1806 | const struct intel_plane_state *pstate, |
1fda9882 | 1807 | uint32_t pri_val) |
cca32e9a | 1808 | { |
ac484963 VS |
1809 | int cpp = pstate->base.fb ? |
1810 | drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0; | |
43d59eda | 1811 | |
7221fc33 | 1812 | if (!cstate->base.active || !pstate->visible) |
cca32e9a PZ |
1813 | return 0; |
1814 | ||
ac484963 | 1815 | return ilk_wm_fbc(pri_val, drm_rect_width(&pstate->dst), cpp); |
cca32e9a PZ |
1816 | } |
1817 | ||
158ae64f VS |
1818 | static unsigned int ilk_display_fifo_size(const struct drm_device *dev) |
1819 | { | |
416f4727 VS |
1820 | if (INTEL_INFO(dev)->gen >= 8) |
1821 | return 3072; | |
1822 | else if (INTEL_INFO(dev)->gen >= 7) | |
158ae64f VS |
1823 | return 768; |
1824 | else | |
1825 | return 512; | |
1826 | } | |
1827 | ||
4e975081 VS |
1828 | static unsigned int ilk_plane_wm_reg_max(const struct drm_device *dev, |
1829 | int level, bool is_sprite) | |
1830 | { | |
1831 | if (INTEL_INFO(dev)->gen >= 8) | |
1832 | /* BDW primary/sprite plane watermarks */ | |
1833 | return level == 0 ? 255 : 2047; | |
1834 | else if (INTEL_INFO(dev)->gen >= 7) | |
1835 | /* IVB/HSW primary/sprite plane watermarks */ | |
1836 | return level == 0 ? 127 : 1023; | |
1837 | else if (!is_sprite) | |
1838 | /* ILK/SNB primary plane watermarks */ | |
1839 | return level == 0 ? 127 : 511; | |
1840 | else | |
1841 | /* ILK/SNB sprite plane watermarks */ | |
1842 | return level == 0 ? 63 : 255; | |
1843 | } | |
1844 | ||
1845 | static unsigned int ilk_cursor_wm_reg_max(const struct drm_device *dev, | |
1846 | int level) | |
1847 | { | |
1848 | if (INTEL_INFO(dev)->gen >= 7) | |
1849 | return level == 0 ? 63 : 255; | |
1850 | else | |
1851 | return level == 0 ? 31 : 63; | |
1852 | } | |
1853 | ||
1854 | static unsigned int ilk_fbc_wm_reg_max(const struct drm_device *dev) | |
1855 | { | |
1856 | if (INTEL_INFO(dev)->gen >= 8) | |
1857 | return 31; | |
1858 | else | |
1859 | return 15; | |
1860 | } | |
1861 | ||
158ae64f VS |
1862 | /* Calculate the maximum primary/sprite plane watermark */ |
1863 | static unsigned int ilk_plane_wm_max(const struct drm_device *dev, | |
1864 | int level, | |
240264f4 | 1865 | const struct intel_wm_config *config, |
158ae64f VS |
1866 | enum intel_ddb_partitioning ddb_partitioning, |
1867 | bool is_sprite) | |
1868 | { | |
1869 | unsigned int fifo_size = ilk_display_fifo_size(dev); | |
158ae64f VS |
1870 | |
1871 | /* if sprites aren't enabled, sprites get nothing */ | |
240264f4 | 1872 | if (is_sprite && !config->sprites_enabled) |
158ae64f VS |
1873 | return 0; |
1874 | ||
1875 | /* HSW allows LP1+ watermarks even with multiple pipes */ | |
240264f4 | 1876 | if (level == 0 || config->num_pipes_active > 1) { |
158ae64f VS |
1877 | fifo_size /= INTEL_INFO(dev)->num_pipes; |
1878 | ||
1879 | /* | |
1880 | * For some reason the non self refresh | |
1881 | * FIFO size is only half of the self | |
1882 | * refresh FIFO size on ILK/SNB. | |
1883 | */ | |
1884 | if (INTEL_INFO(dev)->gen <= 6) | |
1885 | fifo_size /= 2; | |
1886 | } | |
1887 | ||
240264f4 | 1888 | if (config->sprites_enabled) { |
158ae64f VS |
1889 | /* level 0 is always calculated with 1:1 split */ |
1890 | if (level > 0 && ddb_partitioning == INTEL_DDB_PART_5_6) { | |
1891 | if (is_sprite) | |
1892 | fifo_size *= 5; | |
1893 | fifo_size /= 6; | |
1894 | } else { | |
1895 | fifo_size /= 2; | |
1896 | } | |
1897 | } | |
1898 | ||
1899 | /* clamp to max that the registers can hold */ | |
4e975081 | 1900 | return min(fifo_size, ilk_plane_wm_reg_max(dev, level, is_sprite)); |
158ae64f VS |
1901 | } |
1902 | ||
1903 | /* Calculate the maximum cursor plane watermark */ | |
1904 | static unsigned int ilk_cursor_wm_max(const struct drm_device *dev, | |
240264f4 VS |
1905 | int level, |
1906 | const struct intel_wm_config *config) | |
158ae64f VS |
1907 | { |
1908 | /* HSW LP1+ watermarks w/ multiple pipes */ | |
240264f4 | 1909 | if (level > 0 && config->num_pipes_active > 1) |
158ae64f VS |
1910 | return 64; |
1911 | ||
1912 | /* otherwise just report max that registers can hold */ | |
4e975081 | 1913 | return ilk_cursor_wm_reg_max(dev, level); |
158ae64f VS |
1914 | } |
1915 | ||
d34ff9c6 | 1916 | static void ilk_compute_wm_maximums(const struct drm_device *dev, |
34982fe1 VS |
1917 | int level, |
1918 | const struct intel_wm_config *config, | |
1919 | enum intel_ddb_partitioning ddb_partitioning, | |
820c1980 | 1920 | struct ilk_wm_maximums *max) |
158ae64f | 1921 | { |
240264f4 VS |
1922 | max->pri = ilk_plane_wm_max(dev, level, config, ddb_partitioning, false); |
1923 | max->spr = ilk_plane_wm_max(dev, level, config, ddb_partitioning, true); | |
1924 | max->cur = ilk_cursor_wm_max(dev, level, config); | |
4e975081 | 1925 | max->fbc = ilk_fbc_wm_reg_max(dev); |
158ae64f VS |
1926 | } |
1927 | ||
a3cb4048 VS |
1928 | static void ilk_compute_wm_reg_maximums(struct drm_device *dev, |
1929 | int level, | |
1930 | struct ilk_wm_maximums *max) | |
1931 | { | |
1932 | max->pri = ilk_plane_wm_reg_max(dev, level, false); | |
1933 | max->spr = ilk_plane_wm_reg_max(dev, level, true); | |
1934 | max->cur = ilk_cursor_wm_reg_max(dev, level); | |
1935 | max->fbc = ilk_fbc_wm_reg_max(dev); | |
1936 | } | |
1937 | ||
d9395655 | 1938 | static bool ilk_validate_wm_level(int level, |
820c1980 | 1939 | const struct ilk_wm_maximums *max, |
d9395655 | 1940 | struct intel_wm_level *result) |
a9786a11 VS |
1941 | { |
1942 | bool ret; | |
1943 | ||
1944 | /* already determined to be invalid? */ | |
1945 | if (!result->enable) | |
1946 | return false; | |
1947 | ||
1948 | result->enable = result->pri_val <= max->pri && | |
1949 | result->spr_val <= max->spr && | |
1950 | result->cur_val <= max->cur; | |
1951 | ||
1952 | ret = result->enable; | |
1953 | ||
1954 | /* | |
1955 | * HACK until we can pre-compute everything, | |
1956 | * and thus fail gracefully if LP0 watermarks | |
1957 | * are exceeded... | |
1958 | */ | |
1959 | if (level == 0 && !result->enable) { | |
1960 | if (result->pri_val > max->pri) | |
1961 | DRM_DEBUG_KMS("Primary WM%d too large %u (max %u)\n", | |
1962 | level, result->pri_val, max->pri); | |
1963 | if (result->spr_val > max->spr) | |
1964 | DRM_DEBUG_KMS("Sprite WM%d too large %u (max %u)\n", | |
1965 | level, result->spr_val, max->spr); | |
1966 | if (result->cur_val > max->cur) | |
1967 | DRM_DEBUG_KMS("Cursor WM%d too large %u (max %u)\n", | |
1968 | level, result->cur_val, max->cur); | |
1969 | ||
1970 | result->pri_val = min_t(uint32_t, result->pri_val, max->pri); | |
1971 | result->spr_val = min_t(uint32_t, result->spr_val, max->spr); | |
1972 | result->cur_val = min_t(uint32_t, result->cur_val, max->cur); | |
1973 | result->enable = true; | |
1974 | } | |
1975 | ||
a9786a11 VS |
1976 | return ret; |
1977 | } | |
1978 | ||
d34ff9c6 | 1979 | static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv, |
43d59eda | 1980 | const struct intel_crtc *intel_crtc, |
6f5ddd17 | 1981 | int level, |
7221fc33 | 1982 | struct intel_crtc_state *cstate, |
86c8bbbe MR |
1983 | struct intel_plane_state *pristate, |
1984 | struct intel_plane_state *sprstate, | |
1985 | struct intel_plane_state *curstate, | |
1fd527cc | 1986 | struct intel_wm_level *result) |
6f5ddd17 VS |
1987 | { |
1988 | uint16_t pri_latency = dev_priv->wm.pri_latency[level]; | |
1989 | uint16_t spr_latency = dev_priv->wm.spr_latency[level]; | |
1990 | uint16_t cur_latency = dev_priv->wm.cur_latency[level]; | |
1991 | ||
1992 | /* WM1+ latency values stored in 0.5us units */ | |
1993 | if (level > 0) { | |
1994 | pri_latency *= 5; | |
1995 | spr_latency *= 5; | |
1996 | cur_latency *= 5; | |
1997 | } | |
1998 | ||
86c8bbbe MR |
1999 | result->pri_val = ilk_compute_pri_wm(cstate, pristate, |
2000 | pri_latency, level); | |
2001 | result->spr_val = ilk_compute_spr_wm(cstate, sprstate, spr_latency); | |
2002 | result->cur_val = ilk_compute_cur_wm(cstate, curstate, cur_latency); | |
2003 | result->fbc_val = ilk_compute_fbc_wm(cstate, pristate, result->pri_val); | |
6f5ddd17 VS |
2004 | result->enable = true; |
2005 | } | |
2006 | ||
801bcfff | 2007 | static uint32_t |
ee91a159 MR |
2008 | hsw_compute_linetime_wm(struct drm_device *dev, |
2009 | struct intel_crtc_state *cstate) | |
1f8eeabf ED |
2010 | { |
2011 | struct drm_i915_private *dev_priv = dev->dev_private; | |
ee91a159 MR |
2012 | const struct drm_display_mode *adjusted_mode = |
2013 | &cstate->base.adjusted_mode; | |
85a02deb | 2014 | u32 linetime, ips_linetime; |
1f8eeabf | 2015 | |
ee91a159 MR |
2016 | if (!cstate->base.active) |
2017 | return 0; | |
2018 | if (WARN_ON(adjusted_mode->crtc_clock == 0)) | |
2019 | return 0; | |
2020 | if (WARN_ON(dev_priv->cdclk_freq == 0)) | |
801bcfff | 2021 | return 0; |
1011d8c4 | 2022 | |
1f8eeabf ED |
2023 | /* The WM are computed with base on how long it takes to fill a single |
2024 | * row at the given clock rate, multiplied by 8. | |
2025 | * */ | |
124abe07 VS |
2026 | linetime = DIV_ROUND_CLOSEST(adjusted_mode->crtc_htotal * 1000 * 8, |
2027 | adjusted_mode->crtc_clock); | |
2028 | ips_linetime = DIV_ROUND_CLOSEST(adjusted_mode->crtc_htotal * 1000 * 8, | |
05024da3 | 2029 | dev_priv->cdclk_freq); |
1f8eeabf | 2030 | |
801bcfff PZ |
2031 | return PIPE_WM_LINETIME_IPS_LINETIME(ips_linetime) | |
2032 | PIPE_WM_LINETIME_TIME(linetime); | |
1f8eeabf ED |
2033 | } |
2034 | ||
2af30a5c | 2035 | static void intel_read_wm_latency(struct drm_device *dev, uint16_t wm[8]) |
12b134df VS |
2036 | { |
2037 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2038 | ||
2af30a5c PB |
2039 | if (IS_GEN9(dev)) { |
2040 | uint32_t val; | |
4f947386 | 2041 | int ret, i; |
367294be | 2042 | int level, max_level = ilk_wm_max_level(dev); |
2af30a5c PB |
2043 | |
2044 | /* read the first set of memory latencies[0:3] */ | |
2045 | val = 0; /* data0 to be programmed to 0 for first set */ | |
2046 | mutex_lock(&dev_priv->rps.hw_lock); | |
2047 | ret = sandybridge_pcode_read(dev_priv, | |
2048 | GEN9_PCODE_READ_MEM_LATENCY, | |
2049 | &val); | |
2050 | mutex_unlock(&dev_priv->rps.hw_lock); | |
2051 | ||
2052 | if (ret) { | |
2053 | DRM_ERROR("SKL Mailbox read error = %d\n", ret); | |
2054 | return; | |
2055 | } | |
2056 | ||
2057 | wm[0] = val & GEN9_MEM_LATENCY_LEVEL_MASK; | |
2058 | wm[1] = (val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) & | |
2059 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2060 | wm[2] = (val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) & | |
2061 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2062 | wm[3] = (val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) & | |
2063 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2064 | ||
2065 | /* read the second set of memory latencies[4:7] */ | |
2066 | val = 1; /* data0 to be programmed to 1 for second set */ | |
2067 | mutex_lock(&dev_priv->rps.hw_lock); | |
2068 | ret = sandybridge_pcode_read(dev_priv, | |
2069 | GEN9_PCODE_READ_MEM_LATENCY, | |
2070 | &val); | |
2071 | mutex_unlock(&dev_priv->rps.hw_lock); | |
2072 | if (ret) { | |
2073 | DRM_ERROR("SKL Mailbox read error = %d\n", ret); | |
2074 | return; | |
2075 | } | |
2076 | ||
2077 | wm[4] = val & GEN9_MEM_LATENCY_LEVEL_MASK; | |
2078 | wm[5] = (val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) & | |
2079 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2080 | wm[6] = (val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) & | |
2081 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2082 | wm[7] = (val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) & | |
2083 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2084 | ||
367294be | 2085 | /* |
6f97235b DL |
2086 | * WaWmMemoryReadLatency:skl |
2087 | * | |
367294be VK |
2088 | * punit doesn't take into account the read latency so we need |
2089 | * to add 2us to the various latency levels we retrieve from | |
2090 | * the punit. | |
2091 | * - W0 is a bit special in that it's the only level that | |
2092 | * can't be disabled if we want to have display working, so | |
2093 | * we always add 2us there. | |
2094 | * - For levels >=1, punit returns 0us latency when they are | |
2095 | * disabled, so we respect that and don't add 2us then | |
4f947386 VK |
2096 | * |
2097 | * Additionally, if a level n (n > 1) has a 0us latency, all | |
2098 | * levels m (m >= n) need to be disabled. We make sure to | |
2099 | * sanitize the values out of the punit to satisfy this | |
2100 | * requirement. | |
367294be VK |
2101 | */ |
2102 | wm[0] += 2; | |
2103 | for (level = 1; level <= max_level; level++) | |
2104 | if (wm[level] != 0) | |
2105 | wm[level] += 2; | |
4f947386 VK |
2106 | else { |
2107 | for (i = level + 1; i <= max_level; i++) | |
2108 | wm[i] = 0; | |
367294be | 2109 | |
4f947386 VK |
2110 | break; |
2111 | } | |
2af30a5c | 2112 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
12b134df VS |
2113 | uint64_t sskpd = I915_READ64(MCH_SSKPD); |
2114 | ||
2115 | wm[0] = (sskpd >> 56) & 0xFF; | |
2116 | if (wm[0] == 0) | |
2117 | wm[0] = sskpd & 0xF; | |
e5d5019e VS |
2118 | wm[1] = (sskpd >> 4) & 0xFF; |
2119 | wm[2] = (sskpd >> 12) & 0xFF; | |
2120 | wm[3] = (sskpd >> 20) & 0x1FF; | |
2121 | wm[4] = (sskpd >> 32) & 0x1FF; | |
63cf9a13 VS |
2122 | } else if (INTEL_INFO(dev)->gen >= 6) { |
2123 | uint32_t sskpd = I915_READ(MCH_SSKPD); | |
2124 | ||
2125 | wm[0] = (sskpd >> SSKPD_WM0_SHIFT) & SSKPD_WM_MASK; | |
2126 | wm[1] = (sskpd >> SSKPD_WM1_SHIFT) & SSKPD_WM_MASK; | |
2127 | wm[2] = (sskpd >> SSKPD_WM2_SHIFT) & SSKPD_WM_MASK; | |
2128 | wm[3] = (sskpd >> SSKPD_WM3_SHIFT) & SSKPD_WM_MASK; | |
3a88d0ac VS |
2129 | } else if (INTEL_INFO(dev)->gen >= 5) { |
2130 | uint32_t mltr = I915_READ(MLTR_ILK); | |
2131 | ||
2132 | /* ILK primary LP0 latency is 700 ns */ | |
2133 | wm[0] = 7; | |
2134 | wm[1] = (mltr >> MLTR_WM1_SHIFT) & ILK_SRLT_MASK; | |
2135 | wm[2] = (mltr >> MLTR_WM2_SHIFT) & ILK_SRLT_MASK; | |
12b134df VS |
2136 | } |
2137 | } | |
2138 | ||
53615a5e VS |
2139 | static void intel_fixup_spr_wm_latency(struct drm_device *dev, uint16_t wm[5]) |
2140 | { | |
2141 | /* ILK sprite LP0 latency is 1300 ns */ | |
2142 | if (INTEL_INFO(dev)->gen == 5) | |
2143 | wm[0] = 13; | |
2144 | } | |
2145 | ||
2146 | static void intel_fixup_cur_wm_latency(struct drm_device *dev, uint16_t wm[5]) | |
2147 | { | |
2148 | /* ILK cursor LP0 latency is 1300 ns */ | |
2149 | if (INTEL_INFO(dev)->gen == 5) | |
2150 | wm[0] = 13; | |
2151 | ||
2152 | /* WaDoubleCursorLP3Latency:ivb */ | |
2153 | if (IS_IVYBRIDGE(dev)) | |
2154 | wm[3] *= 2; | |
2155 | } | |
2156 | ||
546c81fd | 2157 | int ilk_wm_max_level(const struct drm_device *dev) |
26ec971e | 2158 | { |
26ec971e | 2159 | /* how many WM levels are we expecting */ |
b6e742f6 | 2160 | if (INTEL_INFO(dev)->gen >= 9) |
2af30a5c PB |
2161 | return 7; |
2162 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
ad0d6dc4 | 2163 | return 4; |
26ec971e | 2164 | else if (INTEL_INFO(dev)->gen >= 6) |
ad0d6dc4 | 2165 | return 3; |
26ec971e | 2166 | else |
ad0d6dc4 VS |
2167 | return 2; |
2168 | } | |
7526ed79 | 2169 | |
ad0d6dc4 VS |
2170 | static void intel_print_wm_latency(struct drm_device *dev, |
2171 | const char *name, | |
2af30a5c | 2172 | const uint16_t wm[8]) |
ad0d6dc4 VS |
2173 | { |
2174 | int level, max_level = ilk_wm_max_level(dev); | |
26ec971e VS |
2175 | |
2176 | for (level = 0; level <= max_level; level++) { | |
2177 | unsigned int latency = wm[level]; | |
2178 | ||
2179 | if (latency == 0) { | |
2180 | DRM_ERROR("%s WM%d latency not provided\n", | |
2181 | name, level); | |
2182 | continue; | |
2183 | } | |
2184 | ||
2af30a5c PB |
2185 | /* |
2186 | * - latencies are in us on gen9. | |
2187 | * - before then, WM1+ latency values are in 0.5us units | |
2188 | */ | |
2189 | if (IS_GEN9(dev)) | |
2190 | latency *= 10; | |
2191 | else if (level > 0) | |
26ec971e VS |
2192 | latency *= 5; |
2193 | ||
2194 | DRM_DEBUG_KMS("%s WM%d latency %u (%u.%u usec)\n", | |
2195 | name, level, wm[level], | |
2196 | latency / 10, latency % 10); | |
2197 | } | |
2198 | } | |
2199 | ||
e95a2f75 VS |
2200 | static bool ilk_increase_wm_latency(struct drm_i915_private *dev_priv, |
2201 | uint16_t wm[5], uint16_t min) | |
2202 | { | |
2203 | int level, max_level = ilk_wm_max_level(dev_priv->dev); | |
2204 | ||
2205 | if (wm[0] >= min) | |
2206 | return false; | |
2207 | ||
2208 | wm[0] = max(wm[0], min); | |
2209 | for (level = 1; level <= max_level; level++) | |
2210 | wm[level] = max_t(uint16_t, wm[level], DIV_ROUND_UP(min, 5)); | |
2211 | ||
2212 | return true; | |
2213 | } | |
2214 | ||
2215 | static void snb_wm_latency_quirk(struct drm_device *dev) | |
2216 | { | |
2217 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2218 | bool changed; | |
2219 | ||
2220 | /* | |
2221 | * The BIOS provided WM memory latency values are often | |
2222 | * inadequate for high resolution displays. Adjust them. | |
2223 | */ | |
2224 | changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12) | | |
2225 | ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12) | | |
2226 | ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12); | |
2227 | ||
2228 | if (!changed) | |
2229 | return; | |
2230 | ||
2231 | DRM_DEBUG_KMS("WM latency values increased to avoid potential underruns\n"); | |
2232 | intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); | |
2233 | intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); | |
2234 | intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); | |
2235 | } | |
2236 | ||
fa50ad61 | 2237 | static void ilk_setup_wm_latency(struct drm_device *dev) |
53615a5e VS |
2238 | { |
2239 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2240 | ||
2241 | intel_read_wm_latency(dev, dev_priv->wm.pri_latency); | |
2242 | ||
2243 | memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency, | |
2244 | sizeof(dev_priv->wm.pri_latency)); | |
2245 | memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency, | |
2246 | sizeof(dev_priv->wm.pri_latency)); | |
2247 | ||
2248 | intel_fixup_spr_wm_latency(dev, dev_priv->wm.spr_latency); | |
2249 | intel_fixup_cur_wm_latency(dev, dev_priv->wm.cur_latency); | |
26ec971e VS |
2250 | |
2251 | intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); | |
2252 | intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); | |
2253 | intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); | |
e95a2f75 VS |
2254 | |
2255 | if (IS_GEN6(dev)) | |
2256 | snb_wm_latency_quirk(dev); | |
53615a5e VS |
2257 | } |
2258 | ||
2af30a5c PB |
2259 | static void skl_setup_wm_latency(struct drm_device *dev) |
2260 | { | |
2261 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2262 | ||
2263 | intel_read_wm_latency(dev, dev_priv->wm.skl_latency); | |
2264 | intel_print_wm_latency(dev, "Gen9 Plane", dev_priv->wm.skl_latency); | |
2265 | } | |
2266 | ||
ed4a6a7c MR |
2267 | static bool ilk_validate_pipe_wm(struct drm_device *dev, |
2268 | struct intel_pipe_wm *pipe_wm) | |
2269 | { | |
2270 | /* LP0 watermark maximums depend on this pipe alone */ | |
2271 | const struct intel_wm_config config = { | |
2272 | .num_pipes_active = 1, | |
2273 | .sprites_enabled = pipe_wm->sprites_enabled, | |
2274 | .sprites_scaled = pipe_wm->sprites_scaled, | |
2275 | }; | |
2276 | struct ilk_wm_maximums max; | |
2277 | ||
2278 | /* LP0 watermarks always use 1/2 DDB partitioning */ | |
2279 | ilk_compute_wm_maximums(dev, 0, &config, INTEL_DDB_PART_1_2, &max); | |
2280 | ||
2281 | /* At least LP0 must be valid */ | |
2282 | if (!ilk_validate_wm_level(0, &max, &pipe_wm->wm[0])) { | |
2283 | DRM_DEBUG_KMS("LP0 watermark invalid\n"); | |
2284 | return false; | |
2285 | } | |
2286 | ||
2287 | return true; | |
2288 | } | |
2289 | ||
0b2ae6d7 | 2290 | /* Compute new watermarks for the pipe */ |
86c8bbbe MR |
2291 | static int ilk_compute_pipe_wm(struct intel_crtc *intel_crtc, |
2292 | struct drm_atomic_state *state) | |
0b2ae6d7 | 2293 | { |
86c8bbbe MR |
2294 | struct intel_pipe_wm *pipe_wm; |
2295 | struct drm_device *dev = intel_crtc->base.dev; | |
d34ff9c6 | 2296 | const struct drm_i915_private *dev_priv = dev->dev_private; |
86c8bbbe | 2297 | struct intel_crtc_state *cstate = NULL; |
43d59eda | 2298 | struct intel_plane *intel_plane; |
86c8bbbe MR |
2299 | struct drm_plane_state *ps; |
2300 | struct intel_plane_state *pristate = NULL; | |
43d59eda | 2301 | struct intel_plane_state *sprstate = NULL; |
86c8bbbe | 2302 | struct intel_plane_state *curstate = NULL; |
d81f04c5 | 2303 | int level, max_level = ilk_wm_max_level(dev), usable_level; |
820c1980 | 2304 | struct ilk_wm_maximums max; |
0b2ae6d7 | 2305 | |
86c8bbbe MR |
2306 | cstate = intel_atomic_get_crtc_state(state, intel_crtc); |
2307 | if (IS_ERR(cstate)) | |
2308 | return PTR_ERR(cstate); | |
2309 | ||
2310 | pipe_wm = &cstate->wm.optimal.ilk; | |
2311 | ||
43d59eda | 2312 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { |
86c8bbbe MR |
2313 | ps = drm_atomic_get_plane_state(state, |
2314 | &intel_plane->base); | |
2315 | if (IS_ERR(ps)) | |
2316 | return PTR_ERR(ps); | |
2317 | ||
2318 | if (intel_plane->base.type == DRM_PLANE_TYPE_PRIMARY) | |
2319 | pristate = to_intel_plane_state(ps); | |
2320 | else if (intel_plane->base.type == DRM_PLANE_TYPE_OVERLAY) | |
2321 | sprstate = to_intel_plane_state(ps); | |
2322 | else if (intel_plane->base.type == DRM_PLANE_TYPE_CURSOR) | |
2323 | curstate = to_intel_plane_state(ps); | |
43d59eda MR |
2324 | } |
2325 | ||
ed4a6a7c MR |
2326 | pipe_wm->pipe_enabled = cstate->base.active; |
2327 | pipe_wm->sprites_enabled = sprstate->visible; | |
2328 | pipe_wm->sprites_scaled = sprstate->visible && | |
43d59eda MR |
2329 | (drm_rect_width(&sprstate->dst) != drm_rect_width(&sprstate->src) >> 16 || |
2330 | drm_rect_height(&sprstate->dst) != drm_rect_height(&sprstate->src) >> 16); | |
2331 | ||
d81f04c5 ML |
2332 | usable_level = max_level; |
2333 | ||
7b39a0b7 | 2334 | /* ILK/SNB: LP2+ watermarks only w/o sprites */ |
43d59eda | 2335 | if (INTEL_INFO(dev)->gen <= 6 && sprstate->visible) |
d81f04c5 | 2336 | usable_level = 1; |
7b39a0b7 VS |
2337 | |
2338 | /* ILK/SNB/IVB: LP1+ watermarks only w/o scaling */ | |
ed4a6a7c | 2339 | if (pipe_wm->sprites_scaled) |
d81f04c5 | 2340 | usable_level = 0; |
7b39a0b7 | 2341 | |
86c8bbbe MR |
2342 | ilk_compute_wm_level(dev_priv, intel_crtc, 0, cstate, |
2343 | pristate, sprstate, curstate, &pipe_wm->wm[0]); | |
0b2ae6d7 | 2344 | |
a42a5719 | 2345 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
ee91a159 | 2346 | pipe_wm->linetime = hsw_compute_linetime_wm(dev, cstate); |
0b2ae6d7 | 2347 | |
ed4a6a7c | 2348 | if (!ilk_validate_pipe_wm(dev, pipe_wm)) |
1a426d61 | 2349 | return -EINVAL; |
a3cb4048 VS |
2350 | |
2351 | ilk_compute_wm_reg_maximums(dev, 1, &max); | |
2352 | ||
2353 | for (level = 1; level <= max_level; level++) { | |
d81f04c5 | 2354 | struct intel_wm_level *wm = &pipe_wm->wm[level]; |
a3cb4048 | 2355 | |
86c8bbbe | 2356 | ilk_compute_wm_level(dev_priv, intel_crtc, level, cstate, |
d81f04c5 | 2357 | pristate, sprstate, curstate, wm); |
a3cb4048 VS |
2358 | |
2359 | /* | |
2360 | * Disable any watermark level that exceeds the | |
2361 | * register maximums since such watermarks are | |
2362 | * always invalid. | |
2363 | */ | |
d81f04c5 ML |
2364 | if (level > usable_level) { |
2365 | wm->enable = false; | |
2366 | } else if (!ilk_validate_wm_level(level, &max, wm)) { | |
2367 | wm->enable = false; | |
2368 | usable_level = level; | |
2369 | } | |
a3cb4048 VS |
2370 | } |
2371 | ||
86c8bbbe | 2372 | return 0; |
0b2ae6d7 VS |
2373 | } |
2374 | ||
ed4a6a7c MR |
2375 | /* |
2376 | * Build a set of 'intermediate' watermark values that satisfy both the old | |
2377 | * state and the new state. These can be programmed to the hardware | |
2378 | * immediately. | |
2379 | */ | |
2380 | static int ilk_compute_intermediate_wm(struct drm_device *dev, | |
2381 | struct intel_crtc *intel_crtc, | |
2382 | struct intel_crtc_state *newstate) | |
2383 | { | |
2384 | struct intel_pipe_wm *a = &newstate->wm.intermediate; | |
2385 | struct intel_pipe_wm *b = &intel_crtc->wm.active.ilk; | |
2386 | int level, max_level = ilk_wm_max_level(dev); | |
2387 | ||
2388 | /* | |
2389 | * Start with the final, target watermarks, then combine with the | |
2390 | * currently active watermarks to get values that are safe both before | |
2391 | * and after the vblank. | |
2392 | */ | |
2393 | *a = newstate->wm.optimal.ilk; | |
2394 | a->pipe_enabled |= b->pipe_enabled; | |
2395 | a->sprites_enabled |= b->sprites_enabled; | |
2396 | a->sprites_scaled |= b->sprites_scaled; | |
2397 | ||
2398 | for (level = 0; level <= max_level; level++) { | |
2399 | struct intel_wm_level *a_wm = &a->wm[level]; | |
2400 | const struct intel_wm_level *b_wm = &b->wm[level]; | |
2401 | ||
2402 | a_wm->enable &= b_wm->enable; | |
2403 | a_wm->pri_val = max(a_wm->pri_val, b_wm->pri_val); | |
2404 | a_wm->spr_val = max(a_wm->spr_val, b_wm->spr_val); | |
2405 | a_wm->cur_val = max(a_wm->cur_val, b_wm->cur_val); | |
2406 | a_wm->fbc_val = max(a_wm->fbc_val, b_wm->fbc_val); | |
2407 | } | |
2408 | ||
2409 | /* | |
2410 | * We need to make sure that these merged watermark values are | |
2411 | * actually a valid configuration themselves. If they're not, | |
2412 | * there's no safe way to transition from the old state to | |
2413 | * the new state, so we need to fail the atomic transaction. | |
2414 | */ | |
2415 | if (!ilk_validate_pipe_wm(dev, a)) | |
2416 | return -EINVAL; | |
2417 | ||
2418 | /* | |
2419 | * If our intermediate WM are identical to the final WM, then we can | |
2420 | * omit the post-vblank programming; only update if it's different. | |
2421 | */ | |
2422 | if (memcmp(a, &newstate->wm.optimal.ilk, sizeof(*a)) == 0) | |
2423 | newstate->wm.need_postvbl_update = false; | |
2424 | ||
2425 | return 0; | |
2426 | } | |
2427 | ||
0b2ae6d7 VS |
2428 | /* |
2429 | * Merge the watermarks from all active pipes for a specific level. | |
2430 | */ | |
2431 | static void ilk_merge_wm_level(struct drm_device *dev, | |
2432 | int level, | |
2433 | struct intel_wm_level *ret_wm) | |
2434 | { | |
2435 | const struct intel_crtc *intel_crtc; | |
2436 | ||
d52fea5b VS |
2437 | ret_wm->enable = true; |
2438 | ||
d3fcc808 | 2439 | for_each_intel_crtc(dev, intel_crtc) { |
ed4a6a7c | 2440 | const struct intel_pipe_wm *active = &intel_crtc->wm.active.ilk; |
fe392efd VS |
2441 | const struct intel_wm_level *wm = &active->wm[level]; |
2442 | ||
2443 | if (!active->pipe_enabled) | |
2444 | continue; | |
0b2ae6d7 | 2445 | |
d52fea5b VS |
2446 | /* |
2447 | * The watermark values may have been used in the past, | |
2448 | * so we must maintain them in the registers for some | |
2449 | * time even if the level is now disabled. | |
2450 | */ | |
0b2ae6d7 | 2451 | if (!wm->enable) |
d52fea5b | 2452 | ret_wm->enable = false; |
0b2ae6d7 VS |
2453 | |
2454 | ret_wm->pri_val = max(ret_wm->pri_val, wm->pri_val); | |
2455 | ret_wm->spr_val = max(ret_wm->spr_val, wm->spr_val); | |
2456 | ret_wm->cur_val = max(ret_wm->cur_val, wm->cur_val); | |
2457 | ret_wm->fbc_val = max(ret_wm->fbc_val, wm->fbc_val); | |
2458 | } | |
0b2ae6d7 VS |
2459 | } |
2460 | ||
2461 | /* | |
2462 | * Merge all low power watermarks for all active pipes. | |
2463 | */ | |
2464 | static void ilk_wm_merge(struct drm_device *dev, | |
0ba22e26 | 2465 | const struct intel_wm_config *config, |
820c1980 | 2466 | const struct ilk_wm_maximums *max, |
0b2ae6d7 VS |
2467 | struct intel_pipe_wm *merged) |
2468 | { | |
7733b49b | 2469 | struct drm_i915_private *dev_priv = dev->dev_private; |
0b2ae6d7 | 2470 | int level, max_level = ilk_wm_max_level(dev); |
d52fea5b | 2471 | int last_enabled_level = max_level; |
0b2ae6d7 | 2472 | |
0ba22e26 VS |
2473 | /* ILK/SNB/IVB: LP1+ watermarks only w/ single pipe */ |
2474 | if ((INTEL_INFO(dev)->gen <= 6 || IS_IVYBRIDGE(dev)) && | |
2475 | config->num_pipes_active > 1) | |
2476 | return; | |
2477 | ||
6c8b6c28 VS |
2478 | /* ILK: FBC WM must be disabled always */ |
2479 | merged->fbc_wm_enabled = INTEL_INFO(dev)->gen >= 6; | |
0b2ae6d7 VS |
2480 | |
2481 | /* merge each WM1+ level */ | |
2482 | for (level = 1; level <= max_level; level++) { | |
2483 | struct intel_wm_level *wm = &merged->wm[level]; | |
2484 | ||
2485 | ilk_merge_wm_level(dev, level, wm); | |
2486 | ||
d52fea5b VS |
2487 | if (level > last_enabled_level) |
2488 | wm->enable = false; | |
2489 | else if (!ilk_validate_wm_level(level, max, wm)) | |
2490 | /* make sure all following levels get disabled */ | |
2491 | last_enabled_level = level - 1; | |
0b2ae6d7 VS |
2492 | |
2493 | /* | |
2494 | * The spec says it is preferred to disable | |
2495 | * FBC WMs instead of disabling a WM level. | |
2496 | */ | |
2497 | if (wm->fbc_val > max->fbc) { | |
d52fea5b VS |
2498 | if (wm->enable) |
2499 | merged->fbc_wm_enabled = false; | |
0b2ae6d7 VS |
2500 | wm->fbc_val = 0; |
2501 | } | |
2502 | } | |
6c8b6c28 VS |
2503 | |
2504 | /* ILK: LP2+ must be disabled when FBC WM is disabled but FBC enabled */ | |
2505 | /* | |
2506 | * FIXME this is racy. FBC might get enabled later. | |
2507 | * What we should check here is whether FBC can be | |
2508 | * enabled sometime later. | |
2509 | */ | |
7733b49b | 2510 | if (IS_GEN5(dev) && !merged->fbc_wm_enabled && |
0e631adc | 2511 | intel_fbc_is_active(dev_priv)) { |
6c8b6c28 VS |
2512 | for (level = 2; level <= max_level; level++) { |
2513 | struct intel_wm_level *wm = &merged->wm[level]; | |
2514 | ||
2515 | wm->enable = false; | |
2516 | } | |
2517 | } | |
0b2ae6d7 VS |
2518 | } |
2519 | ||
b380ca3c VS |
2520 | static int ilk_wm_lp_to_level(int wm_lp, const struct intel_pipe_wm *pipe_wm) |
2521 | { | |
2522 | /* LP1,LP2,LP3 levels are either 1,2,3 or 1,3,4 */ | |
2523 | return wm_lp + (wm_lp >= 2 && pipe_wm->wm[4].enable); | |
2524 | } | |
2525 | ||
a68d68ee VS |
2526 | /* The value we need to program into the WM_LPx latency field */ |
2527 | static unsigned int ilk_wm_lp_latency(struct drm_device *dev, int level) | |
2528 | { | |
2529 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2530 | ||
a42a5719 | 2531 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
a68d68ee VS |
2532 | return 2 * level; |
2533 | else | |
2534 | return dev_priv->wm.pri_latency[level]; | |
2535 | } | |
2536 | ||
820c1980 | 2537 | static void ilk_compute_wm_results(struct drm_device *dev, |
0362c781 | 2538 | const struct intel_pipe_wm *merged, |
609cedef | 2539 | enum intel_ddb_partitioning partitioning, |
820c1980 | 2540 | struct ilk_wm_values *results) |
801bcfff | 2541 | { |
0b2ae6d7 VS |
2542 | struct intel_crtc *intel_crtc; |
2543 | int level, wm_lp; | |
cca32e9a | 2544 | |
0362c781 | 2545 | results->enable_fbc_wm = merged->fbc_wm_enabled; |
609cedef | 2546 | results->partitioning = partitioning; |
cca32e9a | 2547 | |
0b2ae6d7 | 2548 | /* LP1+ register values */ |
cca32e9a | 2549 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { |
1fd527cc | 2550 | const struct intel_wm_level *r; |
801bcfff | 2551 | |
b380ca3c | 2552 | level = ilk_wm_lp_to_level(wm_lp, merged); |
0b2ae6d7 | 2553 | |
0362c781 | 2554 | r = &merged->wm[level]; |
cca32e9a | 2555 | |
d52fea5b VS |
2556 | /* |
2557 | * Maintain the watermark values even if the level is | |
2558 | * disabled. Doing otherwise could cause underruns. | |
2559 | */ | |
2560 | results->wm_lp[wm_lp - 1] = | |
a68d68ee | 2561 | (ilk_wm_lp_latency(dev, level) << WM1_LP_LATENCY_SHIFT) | |
416f4727 VS |
2562 | (r->pri_val << WM1_LP_SR_SHIFT) | |
2563 | r->cur_val; | |
2564 | ||
d52fea5b VS |
2565 | if (r->enable) |
2566 | results->wm_lp[wm_lp - 1] |= WM1_LP_SR_EN; | |
2567 | ||
416f4727 VS |
2568 | if (INTEL_INFO(dev)->gen >= 8) |
2569 | results->wm_lp[wm_lp - 1] |= | |
2570 | r->fbc_val << WM1_LP_FBC_SHIFT_BDW; | |
2571 | else | |
2572 | results->wm_lp[wm_lp - 1] |= | |
2573 | r->fbc_val << WM1_LP_FBC_SHIFT; | |
2574 | ||
d52fea5b VS |
2575 | /* |
2576 | * Always set WM1S_LP_EN when spr_val != 0, even if the | |
2577 | * level is disabled. Doing otherwise could cause underruns. | |
2578 | */ | |
6cef2b8a VS |
2579 | if (INTEL_INFO(dev)->gen <= 6 && r->spr_val) { |
2580 | WARN_ON(wm_lp != 1); | |
2581 | results->wm_lp_spr[wm_lp - 1] = WM1S_LP_EN | r->spr_val; | |
2582 | } else | |
2583 | results->wm_lp_spr[wm_lp - 1] = r->spr_val; | |
cca32e9a | 2584 | } |
801bcfff | 2585 | |
0b2ae6d7 | 2586 | /* LP0 register values */ |
d3fcc808 | 2587 | for_each_intel_crtc(dev, intel_crtc) { |
0b2ae6d7 | 2588 | enum pipe pipe = intel_crtc->pipe; |
ed4a6a7c MR |
2589 | const struct intel_wm_level *r = |
2590 | &intel_crtc->wm.active.ilk.wm[0]; | |
0b2ae6d7 VS |
2591 | |
2592 | if (WARN_ON(!r->enable)) | |
2593 | continue; | |
2594 | ||
ed4a6a7c | 2595 | results->wm_linetime[pipe] = intel_crtc->wm.active.ilk.linetime; |
1011d8c4 | 2596 | |
0b2ae6d7 VS |
2597 | results->wm_pipe[pipe] = |
2598 | (r->pri_val << WM0_PIPE_PLANE_SHIFT) | | |
2599 | (r->spr_val << WM0_PIPE_SPRITE_SHIFT) | | |
2600 | r->cur_val; | |
801bcfff PZ |
2601 | } |
2602 | } | |
2603 | ||
861f3389 PZ |
2604 | /* Find the result with the highest level enabled. Check for enable_fbc_wm in |
2605 | * case both are at the same level. Prefer r1 in case they're the same. */ | |
820c1980 | 2606 | static struct intel_pipe_wm *ilk_find_best_result(struct drm_device *dev, |
198a1e9b VS |
2607 | struct intel_pipe_wm *r1, |
2608 | struct intel_pipe_wm *r2) | |
861f3389 | 2609 | { |
198a1e9b VS |
2610 | int level, max_level = ilk_wm_max_level(dev); |
2611 | int level1 = 0, level2 = 0; | |
861f3389 | 2612 | |
198a1e9b VS |
2613 | for (level = 1; level <= max_level; level++) { |
2614 | if (r1->wm[level].enable) | |
2615 | level1 = level; | |
2616 | if (r2->wm[level].enable) | |
2617 | level2 = level; | |
861f3389 PZ |
2618 | } |
2619 | ||
198a1e9b VS |
2620 | if (level1 == level2) { |
2621 | if (r2->fbc_wm_enabled && !r1->fbc_wm_enabled) | |
861f3389 PZ |
2622 | return r2; |
2623 | else | |
2624 | return r1; | |
198a1e9b | 2625 | } else if (level1 > level2) { |
861f3389 PZ |
2626 | return r1; |
2627 | } else { | |
2628 | return r2; | |
2629 | } | |
2630 | } | |
2631 | ||
49a687c4 VS |
2632 | /* dirty bits used to track which watermarks need changes */ |
2633 | #define WM_DIRTY_PIPE(pipe) (1 << (pipe)) | |
2634 | #define WM_DIRTY_LINETIME(pipe) (1 << (8 + (pipe))) | |
2635 | #define WM_DIRTY_LP(wm_lp) (1 << (15 + (wm_lp))) | |
2636 | #define WM_DIRTY_LP_ALL (WM_DIRTY_LP(1) | WM_DIRTY_LP(2) | WM_DIRTY_LP(3)) | |
2637 | #define WM_DIRTY_FBC (1 << 24) | |
2638 | #define WM_DIRTY_DDB (1 << 25) | |
2639 | ||
055e393f | 2640 | static unsigned int ilk_compute_wm_dirty(struct drm_i915_private *dev_priv, |
820c1980 ID |
2641 | const struct ilk_wm_values *old, |
2642 | const struct ilk_wm_values *new) | |
49a687c4 VS |
2643 | { |
2644 | unsigned int dirty = 0; | |
2645 | enum pipe pipe; | |
2646 | int wm_lp; | |
2647 | ||
055e393f | 2648 | for_each_pipe(dev_priv, pipe) { |
49a687c4 VS |
2649 | if (old->wm_linetime[pipe] != new->wm_linetime[pipe]) { |
2650 | dirty |= WM_DIRTY_LINETIME(pipe); | |
2651 | /* Must disable LP1+ watermarks too */ | |
2652 | dirty |= WM_DIRTY_LP_ALL; | |
2653 | } | |
2654 | ||
2655 | if (old->wm_pipe[pipe] != new->wm_pipe[pipe]) { | |
2656 | dirty |= WM_DIRTY_PIPE(pipe); | |
2657 | /* Must disable LP1+ watermarks too */ | |
2658 | dirty |= WM_DIRTY_LP_ALL; | |
2659 | } | |
2660 | } | |
2661 | ||
2662 | if (old->enable_fbc_wm != new->enable_fbc_wm) { | |
2663 | dirty |= WM_DIRTY_FBC; | |
2664 | /* Must disable LP1+ watermarks too */ | |
2665 | dirty |= WM_DIRTY_LP_ALL; | |
2666 | } | |
2667 | ||
2668 | if (old->partitioning != new->partitioning) { | |
2669 | dirty |= WM_DIRTY_DDB; | |
2670 | /* Must disable LP1+ watermarks too */ | |
2671 | dirty |= WM_DIRTY_LP_ALL; | |
2672 | } | |
2673 | ||
2674 | /* LP1+ watermarks already deemed dirty, no need to continue */ | |
2675 | if (dirty & WM_DIRTY_LP_ALL) | |
2676 | return dirty; | |
2677 | ||
2678 | /* Find the lowest numbered LP1+ watermark in need of an update... */ | |
2679 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { | |
2680 | if (old->wm_lp[wm_lp - 1] != new->wm_lp[wm_lp - 1] || | |
2681 | old->wm_lp_spr[wm_lp - 1] != new->wm_lp_spr[wm_lp - 1]) | |
2682 | break; | |
2683 | } | |
2684 | ||
2685 | /* ...and mark it and all higher numbered LP1+ watermarks as dirty */ | |
2686 | for (; wm_lp <= 3; wm_lp++) | |
2687 | dirty |= WM_DIRTY_LP(wm_lp); | |
2688 | ||
2689 | return dirty; | |
2690 | } | |
2691 | ||
8553c18e VS |
2692 | static bool _ilk_disable_lp_wm(struct drm_i915_private *dev_priv, |
2693 | unsigned int dirty) | |
801bcfff | 2694 | { |
820c1980 | 2695 | struct ilk_wm_values *previous = &dev_priv->wm.hw; |
8553c18e | 2696 | bool changed = false; |
801bcfff | 2697 | |
facd619b VS |
2698 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] & WM1_LP_SR_EN) { |
2699 | previous->wm_lp[2] &= ~WM1_LP_SR_EN; | |
2700 | I915_WRITE(WM3_LP_ILK, previous->wm_lp[2]); | |
8553c18e | 2701 | changed = true; |
facd619b VS |
2702 | } |
2703 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] & WM1_LP_SR_EN) { | |
2704 | previous->wm_lp[1] &= ~WM1_LP_SR_EN; | |
2705 | I915_WRITE(WM2_LP_ILK, previous->wm_lp[1]); | |
8553c18e | 2706 | changed = true; |
facd619b VS |
2707 | } |
2708 | if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] & WM1_LP_SR_EN) { | |
2709 | previous->wm_lp[0] &= ~WM1_LP_SR_EN; | |
2710 | I915_WRITE(WM1_LP_ILK, previous->wm_lp[0]); | |
8553c18e | 2711 | changed = true; |
facd619b | 2712 | } |
801bcfff | 2713 | |
facd619b VS |
2714 | /* |
2715 | * Don't touch WM1S_LP_EN here. | |
2716 | * Doing so could cause underruns. | |
2717 | */ | |
6cef2b8a | 2718 | |
8553c18e VS |
2719 | return changed; |
2720 | } | |
2721 | ||
2722 | /* | |
2723 | * The spec says we shouldn't write when we don't need, because every write | |
2724 | * causes WMs to be re-evaluated, expending some power. | |
2725 | */ | |
820c1980 ID |
2726 | static void ilk_write_wm_values(struct drm_i915_private *dev_priv, |
2727 | struct ilk_wm_values *results) | |
8553c18e VS |
2728 | { |
2729 | struct drm_device *dev = dev_priv->dev; | |
820c1980 | 2730 | struct ilk_wm_values *previous = &dev_priv->wm.hw; |
8553c18e VS |
2731 | unsigned int dirty; |
2732 | uint32_t val; | |
2733 | ||
055e393f | 2734 | dirty = ilk_compute_wm_dirty(dev_priv, previous, results); |
8553c18e VS |
2735 | if (!dirty) |
2736 | return; | |
2737 | ||
2738 | _ilk_disable_lp_wm(dev_priv, dirty); | |
2739 | ||
49a687c4 | 2740 | if (dirty & WM_DIRTY_PIPE(PIPE_A)) |
801bcfff | 2741 | I915_WRITE(WM0_PIPEA_ILK, results->wm_pipe[0]); |
49a687c4 | 2742 | if (dirty & WM_DIRTY_PIPE(PIPE_B)) |
801bcfff | 2743 | I915_WRITE(WM0_PIPEB_ILK, results->wm_pipe[1]); |
49a687c4 | 2744 | if (dirty & WM_DIRTY_PIPE(PIPE_C)) |
801bcfff PZ |
2745 | I915_WRITE(WM0_PIPEC_IVB, results->wm_pipe[2]); |
2746 | ||
49a687c4 | 2747 | if (dirty & WM_DIRTY_LINETIME(PIPE_A)) |
801bcfff | 2748 | I915_WRITE(PIPE_WM_LINETIME(PIPE_A), results->wm_linetime[0]); |
49a687c4 | 2749 | if (dirty & WM_DIRTY_LINETIME(PIPE_B)) |
801bcfff | 2750 | I915_WRITE(PIPE_WM_LINETIME(PIPE_B), results->wm_linetime[1]); |
49a687c4 | 2751 | if (dirty & WM_DIRTY_LINETIME(PIPE_C)) |
801bcfff PZ |
2752 | I915_WRITE(PIPE_WM_LINETIME(PIPE_C), results->wm_linetime[2]); |
2753 | ||
49a687c4 | 2754 | if (dirty & WM_DIRTY_DDB) { |
a42a5719 | 2755 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
ac9545fd VS |
2756 | val = I915_READ(WM_MISC); |
2757 | if (results->partitioning == INTEL_DDB_PART_1_2) | |
2758 | val &= ~WM_MISC_DATA_PARTITION_5_6; | |
2759 | else | |
2760 | val |= WM_MISC_DATA_PARTITION_5_6; | |
2761 | I915_WRITE(WM_MISC, val); | |
2762 | } else { | |
2763 | val = I915_READ(DISP_ARB_CTL2); | |
2764 | if (results->partitioning == INTEL_DDB_PART_1_2) | |
2765 | val &= ~DISP_DATA_PARTITION_5_6; | |
2766 | else | |
2767 | val |= DISP_DATA_PARTITION_5_6; | |
2768 | I915_WRITE(DISP_ARB_CTL2, val); | |
2769 | } | |
1011d8c4 PZ |
2770 | } |
2771 | ||
49a687c4 | 2772 | if (dirty & WM_DIRTY_FBC) { |
cca32e9a PZ |
2773 | val = I915_READ(DISP_ARB_CTL); |
2774 | if (results->enable_fbc_wm) | |
2775 | val &= ~DISP_FBC_WM_DIS; | |
2776 | else | |
2777 | val |= DISP_FBC_WM_DIS; | |
2778 | I915_WRITE(DISP_ARB_CTL, val); | |
2779 | } | |
2780 | ||
954911eb ID |
2781 | if (dirty & WM_DIRTY_LP(1) && |
2782 | previous->wm_lp_spr[0] != results->wm_lp_spr[0]) | |
2783 | I915_WRITE(WM1S_LP_ILK, results->wm_lp_spr[0]); | |
2784 | ||
2785 | if (INTEL_INFO(dev)->gen >= 7) { | |
6cef2b8a VS |
2786 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp_spr[1] != results->wm_lp_spr[1]) |
2787 | I915_WRITE(WM2S_LP_IVB, results->wm_lp_spr[1]); | |
2788 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp_spr[2] != results->wm_lp_spr[2]) | |
2789 | I915_WRITE(WM3S_LP_IVB, results->wm_lp_spr[2]); | |
2790 | } | |
801bcfff | 2791 | |
facd619b | 2792 | if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] != results->wm_lp[0]) |
801bcfff | 2793 | I915_WRITE(WM1_LP_ILK, results->wm_lp[0]); |
facd619b | 2794 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] != results->wm_lp[1]) |
801bcfff | 2795 | I915_WRITE(WM2_LP_ILK, results->wm_lp[1]); |
facd619b | 2796 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] != results->wm_lp[2]) |
801bcfff | 2797 | I915_WRITE(WM3_LP_ILK, results->wm_lp[2]); |
609cedef VS |
2798 | |
2799 | dev_priv->wm.hw = *results; | |
801bcfff PZ |
2800 | } |
2801 | ||
ed4a6a7c | 2802 | bool ilk_disable_lp_wm(struct drm_device *dev) |
8553c18e VS |
2803 | { |
2804 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2805 | ||
2806 | return _ilk_disable_lp_wm(dev_priv, WM_DIRTY_LP_ALL); | |
2807 | } | |
2808 | ||
b9cec075 DL |
2809 | /* |
2810 | * On gen9, we need to allocate Display Data Buffer (DDB) portions to the | |
2811 | * different active planes. | |
2812 | */ | |
2813 | ||
2814 | #define SKL_DDB_SIZE 896 /* in blocks */ | |
43d735a6 | 2815 | #define BXT_DDB_SIZE 512 |
b9cec075 | 2816 | |
024c9045 MR |
2817 | /* |
2818 | * Return the index of a plane in the SKL DDB and wm result arrays. Primary | |
2819 | * plane is always in slot 0, cursor is always in slot I915_MAX_PLANES-1, and | |
2820 | * other universal planes are in indices 1..n. Note that this may leave unused | |
2821 | * indices between the top "sprite" plane and the cursor. | |
2822 | */ | |
2823 | static int | |
2824 | skl_wm_plane_id(const struct intel_plane *plane) | |
2825 | { | |
2826 | switch (plane->base.type) { | |
2827 | case DRM_PLANE_TYPE_PRIMARY: | |
2828 | return 0; | |
2829 | case DRM_PLANE_TYPE_CURSOR: | |
2830 | return PLANE_CURSOR; | |
2831 | case DRM_PLANE_TYPE_OVERLAY: | |
2832 | return plane->plane + 1; | |
2833 | default: | |
2834 | MISSING_CASE(plane->base.type); | |
2835 | return plane->plane; | |
2836 | } | |
2837 | } | |
2838 | ||
b9cec075 DL |
2839 | static void |
2840 | skl_ddb_get_pipe_allocation_limits(struct drm_device *dev, | |
024c9045 | 2841 | const struct intel_crtc_state *cstate, |
b9cec075 | 2842 | const struct intel_wm_config *config, |
b9cec075 DL |
2843 | struct skl_ddb_entry *alloc /* out */) |
2844 | { | |
024c9045 | 2845 | struct drm_crtc *for_crtc = cstate->base.crtc; |
b9cec075 DL |
2846 | struct drm_crtc *crtc; |
2847 | unsigned int pipe_size, ddb_size; | |
2848 | int nth_active_pipe; | |
2849 | ||
024c9045 | 2850 | if (!cstate->base.active) { |
b9cec075 DL |
2851 | alloc->start = 0; |
2852 | alloc->end = 0; | |
2853 | return; | |
2854 | } | |
2855 | ||
43d735a6 DL |
2856 | if (IS_BROXTON(dev)) |
2857 | ddb_size = BXT_DDB_SIZE; | |
2858 | else | |
2859 | ddb_size = SKL_DDB_SIZE; | |
b9cec075 DL |
2860 | |
2861 | ddb_size -= 4; /* 4 blocks for bypass path allocation */ | |
2862 | ||
2863 | nth_active_pipe = 0; | |
2864 | for_each_crtc(dev, crtc) { | |
3ef00284 | 2865 | if (!to_intel_crtc(crtc)->active) |
b9cec075 DL |
2866 | continue; |
2867 | ||
2868 | if (crtc == for_crtc) | |
2869 | break; | |
2870 | ||
2871 | nth_active_pipe++; | |
2872 | } | |
2873 | ||
2874 | pipe_size = ddb_size / config->num_pipes_active; | |
2875 | alloc->start = nth_active_pipe * ddb_size / config->num_pipes_active; | |
16160e3d | 2876 | alloc->end = alloc->start + pipe_size; |
b9cec075 DL |
2877 | } |
2878 | ||
2879 | static unsigned int skl_cursor_allocation(const struct intel_wm_config *config) | |
2880 | { | |
2881 | if (config->num_pipes_active == 1) | |
2882 | return 32; | |
2883 | ||
2884 | return 8; | |
2885 | } | |
2886 | ||
a269c583 DL |
2887 | static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg) |
2888 | { | |
2889 | entry->start = reg & 0x3ff; | |
2890 | entry->end = (reg >> 16) & 0x3ff; | |
16160e3d DL |
2891 | if (entry->end) |
2892 | entry->end += 1; | |
a269c583 DL |
2893 | } |
2894 | ||
08db6652 DL |
2895 | void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv, |
2896 | struct skl_ddb_allocation *ddb /* out */) | |
a269c583 | 2897 | { |
a269c583 DL |
2898 | enum pipe pipe; |
2899 | int plane; | |
2900 | u32 val; | |
2901 | ||
b10f1b20 ML |
2902 | memset(ddb, 0, sizeof(*ddb)); |
2903 | ||
a269c583 | 2904 | for_each_pipe(dev_priv, pipe) { |
4d800030 ID |
2905 | enum intel_display_power_domain power_domain; |
2906 | ||
2907 | power_domain = POWER_DOMAIN_PIPE(pipe); | |
2908 | if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) | |
b10f1b20 ML |
2909 | continue; |
2910 | ||
dd740780 | 2911 | for_each_plane(dev_priv, pipe, plane) { |
a269c583 DL |
2912 | val = I915_READ(PLANE_BUF_CFG(pipe, plane)); |
2913 | skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane], | |
2914 | val); | |
2915 | } | |
2916 | ||
2917 | val = I915_READ(CUR_BUF_CFG(pipe)); | |
4969d33e MR |
2918 | skl_ddb_entry_init_from_hw(&ddb->plane[pipe][PLANE_CURSOR], |
2919 | val); | |
4d800030 ID |
2920 | |
2921 | intel_display_power_put(dev_priv, power_domain); | |
a269c583 DL |
2922 | } |
2923 | } | |
2924 | ||
b9cec075 | 2925 | static unsigned int |
024c9045 MR |
2926 | skl_plane_relative_data_rate(const struct intel_crtc_state *cstate, |
2927 | const struct drm_plane_state *pstate, | |
2928 | int y) | |
b9cec075 | 2929 | { |
024c9045 MR |
2930 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); |
2931 | struct drm_framebuffer *fb = pstate->fb; | |
2cd601c6 CK |
2932 | |
2933 | /* for planar format */ | |
024c9045 | 2934 | if (fb->pixel_format == DRM_FORMAT_NV12) { |
2cd601c6 | 2935 | if (y) /* y-plane data rate */ |
024c9045 MR |
2936 | return intel_crtc->config->pipe_src_w * |
2937 | intel_crtc->config->pipe_src_h * | |
2938 | drm_format_plane_cpp(fb->pixel_format, 0); | |
2cd601c6 | 2939 | else /* uv-plane data rate */ |
024c9045 MR |
2940 | return (intel_crtc->config->pipe_src_w/2) * |
2941 | (intel_crtc->config->pipe_src_h/2) * | |
2942 | drm_format_plane_cpp(fb->pixel_format, 1); | |
2cd601c6 CK |
2943 | } |
2944 | ||
2945 | /* for packed formats */ | |
024c9045 MR |
2946 | return intel_crtc->config->pipe_src_w * |
2947 | intel_crtc->config->pipe_src_h * | |
2948 | drm_format_plane_cpp(fb->pixel_format, 0); | |
b9cec075 DL |
2949 | } |
2950 | ||
2951 | /* | |
2952 | * We don't overflow 32 bits. Worst case is 3 planes enabled, each fetching | |
2953 | * a 8192x4096@32bpp framebuffer: | |
2954 | * 3 * 4096 * 8192 * 4 < 2^32 | |
2955 | */ | |
2956 | static unsigned int | |
024c9045 | 2957 | skl_get_total_relative_data_rate(const struct intel_crtc_state *cstate) |
b9cec075 | 2958 | { |
024c9045 MR |
2959 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); |
2960 | struct drm_device *dev = intel_crtc->base.dev; | |
2961 | const struct intel_plane *intel_plane; | |
b9cec075 | 2962 | unsigned int total_data_rate = 0; |
b9cec075 | 2963 | |
024c9045 MR |
2964 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { |
2965 | const struct drm_plane_state *pstate = intel_plane->base.state; | |
b9cec075 | 2966 | |
024c9045 | 2967 | if (pstate->fb == NULL) |
b9cec075 DL |
2968 | continue; |
2969 | ||
024c9045 MR |
2970 | if (intel_plane->base.type == DRM_PLANE_TYPE_CURSOR) |
2971 | continue; | |
2972 | ||
2973 | /* packed/uv */ | |
2974 | total_data_rate += skl_plane_relative_data_rate(cstate, | |
2975 | pstate, | |
2976 | 0); | |
2977 | ||
2978 | if (pstate->fb->pixel_format == DRM_FORMAT_NV12) | |
2979 | /* y-plane */ | |
2980 | total_data_rate += skl_plane_relative_data_rate(cstate, | |
2981 | pstate, | |
2982 | 1); | |
b9cec075 DL |
2983 | } |
2984 | ||
2985 | return total_data_rate; | |
2986 | } | |
2987 | ||
2988 | static void | |
024c9045 | 2989 | skl_allocate_pipe_ddb(struct intel_crtc_state *cstate, |
b9cec075 DL |
2990 | struct skl_ddb_allocation *ddb /* out */) |
2991 | { | |
024c9045 | 2992 | struct drm_crtc *crtc = cstate->base.crtc; |
b9cec075 | 2993 | struct drm_device *dev = crtc->dev; |
aa363136 MR |
2994 | struct drm_i915_private *dev_priv = to_i915(dev); |
2995 | struct intel_wm_config *config = &dev_priv->wm.config; | |
b9cec075 | 2996 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
024c9045 | 2997 | struct intel_plane *intel_plane; |
b9cec075 | 2998 | enum pipe pipe = intel_crtc->pipe; |
34bb56af | 2999 | struct skl_ddb_entry *alloc = &ddb->pipe[pipe]; |
b9cec075 | 3000 | uint16_t alloc_size, start, cursor_blocks; |
80958155 | 3001 | uint16_t minimum[I915_MAX_PLANES]; |
2cd601c6 | 3002 | uint16_t y_minimum[I915_MAX_PLANES]; |
b9cec075 | 3003 | unsigned int total_data_rate; |
b9cec075 | 3004 | |
024c9045 | 3005 | skl_ddb_get_pipe_allocation_limits(dev, cstate, config, alloc); |
34bb56af | 3006 | alloc_size = skl_ddb_entry_size(alloc); |
b9cec075 DL |
3007 | if (alloc_size == 0) { |
3008 | memset(ddb->plane[pipe], 0, sizeof(ddb->plane[pipe])); | |
4969d33e MR |
3009 | memset(&ddb->plane[pipe][PLANE_CURSOR], 0, |
3010 | sizeof(ddb->plane[pipe][PLANE_CURSOR])); | |
b9cec075 DL |
3011 | return; |
3012 | } | |
3013 | ||
3014 | cursor_blocks = skl_cursor_allocation(config); | |
4969d33e MR |
3015 | ddb->plane[pipe][PLANE_CURSOR].start = alloc->end - cursor_blocks; |
3016 | ddb->plane[pipe][PLANE_CURSOR].end = alloc->end; | |
b9cec075 DL |
3017 | |
3018 | alloc_size -= cursor_blocks; | |
34bb56af | 3019 | alloc->end -= cursor_blocks; |
b9cec075 | 3020 | |
80958155 | 3021 | /* 1. Allocate the mininum required blocks for each active plane */ |
024c9045 MR |
3022 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { |
3023 | struct drm_plane *plane = &intel_plane->base; | |
3024 | struct drm_framebuffer *fb = plane->state->fb; | |
3025 | int id = skl_wm_plane_id(intel_plane); | |
80958155 | 3026 | |
024c9045 MR |
3027 | if (fb == NULL) |
3028 | continue; | |
3029 | if (plane->type == DRM_PLANE_TYPE_CURSOR) | |
80958155 DL |
3030 | continue; |
3031 | ||
024c9045 MR |
3032 | minimum[id] = 8; |
3033 | alloc_size -= minimum[id]; | |
3034 | y_minimum[id] = (fb->pixel_format == DRM_FORMAT_NV12) ? 8 : 0; | |
3035 | alloc_size -= y_minimum[id]; | |
80958155 DL |
3036 | } |
3037 | ||
b9cec075 | 3038 | /* |
80958155 DL |
3039 | * 2. Distribute the remaining space in proportion to the amount of |
3040 | * data each plane needs to fetch from memory. | |
b9cec075 DL |
3041 | * |
3042 | * FIXME: we may not allocate every single block here. | |
3043 | */ | |
024c9045 | 3044 | total_data_rate = skl_get_total_relative_data_rate(cstate); |
b9cec075 | 3045 | |
34bb56af | 3046 | start = alloc->start; |
024c9045 MR |
3047 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { |
3048 | struct drm_plane *plane = &intel_plane->base; | |
3049 | struct drm_plane_state *pstate = intel_plane->base.state; | |
2cd601c6 CK |
3050 | unsigned int data_rate, y_data_rate; |
3051 | uint16_t plane_blocks, y_plane_blocks = 0; | |
024c9045 | 3052 | int id = skl_wm_plane_id(intel_plane); |
b9cec075 | 3053 | |
024c9045 MR |
3054 | if (pstate->fb == NULL) |
3055 | continue; | |
3056 | if (plane->type == DRM_PLANE_TYPE_CURSOR) | |
b9cec075 DL |
3057 | continue; |
3058 | ||
024c9045 | 3059 | data_rate = skl_plane_relative_data_rate(cstate, pstate, 0); |
b9cec075 DL |
3060 | |
3061 | /* | |
2cd601c6 | 3062 | * allocation for (packed formats) or (uv-plane part of planar format): |
b9cec075 DL |
3063 | * promote the expression to 64 bits to avoid overflowing, the |
3064 | * result is < available as data_rate / total_data_rate < 1 | |
3065 | */ | |
024c9045 | 3066 | plane_blocks = minimum[id]; |
80958155 DL |
3067 | plane_blocks += div_u64((uint64_t)alloc_size * data_rate, |
3068 | total_data_rate); | |
b9cec075 | 3069 | |
024c9045 MR |
3070 | ddb->plane[pipe][id].start = start; |
3071 | ddb->plane[pipe][id].end = start + plane_blocks; | |
b9cec075 DL |
3072 | |
3073 | start += plane_blocks; | |
2cd601c6 CK |
3074 | |
3075 | /* | |
3076 | * allocation for y_plane part of planar format: | |
3077 | */ | |
024c9045 MR |
3078 | if (pstate->fb->pixel_format == DRM_FORMAT_NV12) { |
3079 | y_data_rate = skl_plane_relative_data_rate(cstate, | |
3080 | pstate, | |
3081 | 1); | |
3082 | y_plane_blocks = y_minimum[id]; | |
2cd601c6 CK |
3083 | y_plane_blocks += div_u64((uint64_t)alloc_size * y_data_rate, |
3084 | total_data_rate); | |
3085 | ||
024c9045 MR |
3086 | ddb->y_plane[pipe][id].start = start; |
3087 | ddb->y_plane[pipe][id].end = start + y_plane_blocks; | |
2cd601c6 CK |
3088 | |
3089 | start += y_plane_blocks; | |
3090 | } | |
3091 | ||
b9cec075 DL |
3092 | } |
3093 | ||
3094 | } | |
3095 | ||
5cec258b | 3096 | static uint32_t skl_pipe_pixel_rate(const struct intel_crtc_state *config) |
2d41c0b5 PB |
3097 | { |
3098 | /* TODO: Take into account the scalers once we support them */ | |
2d112de7 | 3099 | return config->base.adjusted_mode.crtc_clock; |
2d41c0b5 PB |
3100 | } |
3101 | ||
3102 | /* | |
3103 | * The max latency should be 257 (max the punit can code is 255 and we add 2us | |
ac484963 | 3104 | * for the read latency) and cpp should always be <= 8, so that |
2d41c0b5 PB |
3105 | * should allow pixel_rate up to ~2 GHz which seems sufficient since max |
3106 | * 2xcdclk is 1350 MHz and the pixel rate should never exceed that. | |
3107 | */ | |
ac484963 | 3108 | static uint32_t skl_wm_method1(uint32_t pixel_rate, uint8_t cpp, uint32_t latency) |
2d41c0b5 PB |
3109 | { |
3110 | uint32_t wm_intermediate_val, ret; | |
3111 | ||
3112 | if (latency == 0) | |
3113 | return UINT_MAX; | |
3114 | ||
ac484963 | 3115 | wm_intermediate_val = latency * pixel_rate * cpp / 512; |
2d41c0b5 PB |
3116 | ret = DIV_ROUND_UP(wm_intermediate_val, 1000); |
3117 | ||
3118 | return ret; | |
3119 | } | |
3120 | ||
3121 | static uint32_t skl_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, | |
ac484963 | 3122 | uint32_t horiz_pixels, uint8_t cpp, |
0fda6568 | 3123 | uint64_t tiling, uint32_t latency) |
2d41c0b5 | 3124 | { |
d4c2aa60 TU |
3125 | uint32_t ret; |
3126 | uint32_t plane_bytes_per_line, plane_blocks_per_line; | |
3127 | uint32_t wm_intermediate_val; | |
2d41c0b5 PB |
3128 | |
3129 | if (latency == 0) | |
3130 | return UINT_MAX; | |
3131 | ||
ac484963 | 3132 | plane_bytes_per_line = horiz_pixels * cpp; |
0fda6568 TU |
3133 | |
3134 | if (tiling == I915_FORMAT_MOD_Y_TILED || | |
3135 | tiling == I915_FORMAT_MOD_Yf_TILED) { | |
3136 | plane_bytes_per_line *= 4; | |
3137 | plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); | |
3138 | plane_blocks_per_line /= 4; | |
3139 | } else { | |
3140 | plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); | |
3141 | } | |
3142 | ||
2d41c0b5 PB |
3143 | wm_intermediate_val = latency * pixel_rate; |
3144 | ret = DIV_ROUND_UP(wm_intermediate_val, pipe_htotal * 1000) * | |
d4c2aa60 | 3145 | plane_blocks_per_line; |
2d41c0b5 PB |
3146 | |
3147 | return ret; | |
3148 | } | |
3149 | ||
2d41c0b5 PB |
3150 | static bool skl_ddb_allocation_changed(const struct skl_ddb_allocation *new_ddb, |
3151 | const struct intel_crtc *intel_crtc) | |
3152 | { | |
3153 | struct drm_device *dev = intel_crtc->base.dev; | |
3154 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3155 | const struct skl_ddb_allocation *cur_ddb = &dev_priv->wm.skl_hw.ddb; | |
2d41c0b5 | 3156 | |
e6d90023 KM |
3157 | /* |
3158 | * If ddb allocation of pipes changed, it may require recalculation of | |
3159 | * watermarks | |
3160 | */ | |
3161 | if (memcmp(new_ddb->pipe, cur_ddb->pipe, sizeof(new_ddb->pipe))) | |
2d41c0b5 PB |
3162 | return true; |
3163 | ||
3164 | return false; | |
3165 | } | |
3166 | ||
d4c2aa60 | 3167 | static bool skl_compute_plane_wm(const struct drm_i915_private *dev_priv, |
024c9045 MR |
3168 | struct intel_crtc_state *cstate, |
3169 | struct intel_plane *intel_plane, | |
afb024aa | 3170 | uint16_t ddb_allocation, |
d4c2aa60 | 3171 | int level, |
afb024aa DL |
3172 | uint16_t *out_blocks, /* out */ |
3173 | uint8_t *out_lines /* out */) | |
2d41c0b5 | 3174 | { |
024c9045 MR |
3175 | struct drm_plane *plane = &intel_plane->base; |
3176 | struct drm_framebuffer *fb = plane->state->fb; | |
d4c2aa60 TU |
3177 | uint32_t latency = dev_priv->wm.skl_latency[level]; |
3178 | uint32_t method1, method2; | |
3179 | uint32_t plane_bytes_per_line, plane_blocks_per_line; | |
3180 | uint32_t res_blocks, res_lines; | |
3181 | uint32_t selected_result; | |
ac484963 | 3182 | uint8_t cpp; |
2d41c0b5 | 3183 | |
024c9045 | 3184 | if (latency == 0 || !cstate->base.active || !fb) |
2d41c0b5 PB |
3185 | return false; |
3186 | ||
ac484963 | 3187 | cpp = drm_format_plane_cpp(fb->pixel_format, 0); |
024c9045 | 3188 | method1 = skl_wm_method1(skl_pipe_pixel_rate(cstate), |
ac484963 | 3189 | cpp, latency); |
024c9045 MR |
3190 | method2 = skl_wm_method2(skl_pipe_pixel_rate(cstate), |
3191 | cstate->base.adjusted_mode.crtc_htotal, | |
3192 | cstate->pipe_src_w, | |
ac484963 | 3193 | cpp, fb->modifier[0], |
d4c2aa60 | 3194 | latency); |
2d41c0b5 | 3195 | |
ac484963 | 3196 | plane_bytes_per_line = cstate->pipe_src_w * cpp; |
d4c2aa60 | 3197 | plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); |
2d41c0b5 | 3198 | |
024c9045 MR |
3199 | if (fb->modifier[0] == I915_FORMAT_MOD_Y_TILED || |
3200 | fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED) { | |
1fc0a8f7 TU |
3201 | uint32_t min_scanlines = 4; |
3202 | uint32_t y_tile_minimum; | |
024c9045 | 3203 | if (intel_rotation_90_or_270(plane->state->rotation)) { |
ac484963 | 3204 | int cpp = (fb->pixel_format == DRM_FORMAT_NV12) ? |
024c9045 MR |
3205 | drm_format_plane_cpp(fb->pixel_format, 1) : |
3206 | drm_format_plane_cpp(fb->pixel_format, 0); | |
3207 | ||
ac484963 | 3208 | switch (cpp) { |
1fc0a8f7 TU |
3209 | case 1: |
3210 | min_scanlines = 16; | |
3211 | break; | |
3212 | case 2: | |
3213 | min_scanlines = 8; | |
3214 | break; | |
3215 | case 8: | |
3216 | WARN(1, "Unsupported pixel depth for rotation"); | |
2f0b5790 | 3217 | } |
1fc0a8f7 TU |
3218 | } |
3219 | y_tile_minimum = plane_blocks_per_line * min_scanlines; | |
0fda6568 TU |
3220 | selected_result = max(method2, y_tile_minimum); |
3221 | } else { | |
3222 | if ((ddb_allocation / plane_blocks_per_line) >= 1) | |
3223 | selected_result = min(method1, method2); | |
3224 | else | |
3225 | selected_result = method1; | |
3226 | } | |
2d41c0b5 | 3227 | |
d4c2aa60 TU |
3228 | res_blocks = selected_result + 1; |
3229 | res_lines = DIV_ROUND_UP(selected_result, plane_blocks_per_line); | |
e6d66171 | 3230 | |
0fda6568 | 3231 | if (level >= 1 && level <= 7) { |
024c9045 MR |
3232 | if (fb->modifier[0] == I915_FORMAT_MOD_Y_TILED || |
3233 | fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED) | |
0fda6568 TU |
3234 | res_lines += 4; |
3235 | else | |
3236 | res_blocks++; | |
3237 | } | |
e6d66171 | 3238 | |
d4c2aa60 | 3239 | if (res_blocks >= ddb_allocation || res_lines > 31) |
e6d66171 DL |
3240 | return false; |
3241 | ||
3242 | *out_blocks = res_blocks; | |
3243 | *out_lines = res_lines; | |
2d41c0b5 PB |
3244 | |
3245 | return true; | |
3246 | } | |
3247 | ||
3248 | static void skl_compute_wm_level(const struct drm_i915_private *dev_priv, | |
3249 | struct skl_ddb_allocation *ddb, | |
024c9045 | 3250 | struct intel_crtc_state *cstate, |
2d41c0b5 | 3251 | int level, |
2d41c0b5 PB |
3252 | struct skl_wm_level *result) |
3253 | { | |
024c9045 MR |
3254 | struct drm_device *dev = dev_priv->dev; |
3255 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); | |
3256 | struct intel_plane *intel_plane; | |
2d41c0b5 | 3257 | uint16_t ddb_blocks; |
024c9045 MR |
3258 | enum pipe pipe = intel_crtc->pipe; |
3259 | ||
3260 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { | |
3261 | int i = skl_wm_plane_id(intel_plane); | |
2d41c0b5 | 3262 | |
2d41c0b5 PB |
3263 | ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][i]); |
3264 | ||
d4c2aa60 | 3265 | result->plane_en[i] = skl_compute_plane_wm(dev_priv, |
024c9045 MR |
3266 | cstate, |
3267 | intel_plane, | |
2d41c0b5 | 3268 | ddb_blocks, |
d4c2aa60 | 3269 | level, |
2d41c0b5 PB |
3270 | &result->plane_res_b[i], |
3271 | &result->plane_res_l[i]); | |
3272 | } | |
2d41c0b5 PB |
3273 | } |
3274 | ||
407b50f3 | 3275 | static uint32_t |
024c9045 | 3276 | skl_compute_linetime_wm(struct intel_crtc_state *cstate) |
407b50f3 | 3277 | { |
024c9045 | 3278 | if (!cstate->base.active) |
407b50f3 DL |
3279 | return 0; |
3280 | ||
024c9045 | 3281 | if (WARN_ON(skl_pipe_pixel_rate(cstate) == 0)) |
661abfc0 | 3282 | return 0; |
407b50f3 | 3283 | |
024c9045 MR |
3284 | return DIV_ROUND_UP(8 * cstate->base.adjusted_mode.crtc_htotal * 1000, |
3285 | skl_pipe_pixel_rate(cstate)); | |
407b50f3 DL |
3286 | } |
3287 | ||
024c9045 | 3288 | static void skl_compute_transition_wm(struct intel_crtc_state *cstate, |
9414f563 | 3289 | struct skl_wm_level *trans_wm /* out */) |
407b50f3 | 3290 | { |
024c9045 | 3291 | struct drm_crtc *crtc = cstate->base.crtc; |
9414f563 | 3292 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
024c9045 | 3293 | struct intel_plane *intel_plane; |
9414f563 | 3294 | |
024c9045 | 3295 | if (!cstate->base.active) |
407b50f3 | 3296 | return; |
9414f563 DL |
3297 | |
3298 | /* Until we know more, just disable transition WMs */ | |
024c9045 MR |
3299 | for_each_intel_plane_on_crtc(crtc->dev, intel_crtc, intel_plane) { |
3300 | int i = skl_wm_plane_id(intel_plane); | |
3301 | ||
9414f563 | 3302 | trans_wm->plane_en[i] = false; |
024c9045 | 3303 | } |
407b50f3 DL |
3304 | } |
3305 | ||
024c9045 | 3306 | static void skl_compute_pipe_wm(struct intel_crtc_state *cstate, |
2d41c0b5 | 3307 | struct skl_ddb_allocation *ddb, |
2d41c0b5 PB |
3308 | struct skl_pipe_wm *pipe_wm) |
3309 | { | |
024c9045 | 3310 | struct drm_device *dev = cstate->base.crtc->dev; |
2d41c0b5 | 3311 | const struct drm_i915_private *dev_priv = dev->dev_private; |
2d41c0b5 PB |
3312 | int level, max_level = ilk_wm_max_level(dev); |
3313 | ||
3314 | for (level = 0; level <= max_level; level++) { | |
024c9045 MR |
3315 | skl_compute_wm_level(dev_priv, ddb, cstate, |
3316 | level, &pipe_wm->wm[level]); | |
2d41c0b5 | 3317 | } |
024c9045 | 3318 | pipe_wm->linetime = skl_compute_linetime_wm(cstate); |
2d41c0b5 | 3319 | |
024c9045 | 3320 | skl_compute_transition_wm(cstate, &pipe_wm->trans_wm); |
2d41c0b5 PB |
3321 | } |
3322 | ||
3323 | static void skl_compute_wm_results(struct drm_device *dev, | |
2d41c0b5 PB |
3324 | struct skl_pipe_wm *p_wm, |
3325 | struct skl_wm_values *r, | |
3326 | struct intel_crtc *intel_crtc) | |
3327 | { | |
3328 | int level, max_level = ilk_wm_max_level(dev); | |
3329 | enum pipe pipe = intel_crtc->pipe; | |
9414f563 DL |
3330 | uint32_t temp; |
3331 | int i; | |
2d41c0b5 PB |
3332 | |
3333 | for (level = 0; level <= max_level; level++) { | |
2d41c0b5 PB |
3334 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { |
3335 | temp = 0; | |
2d41c0b5 PB |
3336 | |
3337 | temp |= p_wm->wm[level].plane_res_l[i] << | |
3338 | PLANE_WM_LINES_SHIFT; | |
3339 | temp |= p_wm->wm[level].plane_res_b[i]; | |
3340 | if (p_wm->wm[level].plane_en[i]) | |
3341 | temp |= PLANE_WM_EN; | |
3342 | ||
3343 | r->plane[pipe][i][level] = temp; | |
2d41c0b5 PB |
3344 | } |
3345 | ||
3346 | temp = 0; | |
2d41c0b5 | 3347 | |
4969d33e MR |
3348 | temp |= p_wm->wm[level].plane_res_l[PLANE_CURSOR] << PLANE_WM_LINES_SHIFT; |
3349 | temp |= p_wm->wm[level].plane_res_b[PLANE_CURSOR]; | |
2d41c0b5 | 3350 | |
4969d33e | 3351 | if (p_wm->wm[level].plane_en[PLANE_CURSOR]) |
2d41c0b5 PB |
3352 | temp |= PLANE_WM_EN; |
3353 | ||
4969d33e | 3354 | r->plane[pipe][PLANE_CURSOR][level] = temp; |
2d41c0b5 PB |
3355 | |
3356 | } | |
3357 | ||
9414f563 DL |
3358 | /* transition WMs */ |
3359 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
3360 | temp = 0; | |
3361 | temp |= p_wm->trans_wm.plane_res_l[i] << PLANE_WM_LINES_SHIFT; | |
3362 | temp |= p_wm->trans_wm.plane_res_b[i]; | |
3363 | if (p_wm->trans_wm.plane_en[i]) | |
3364 | temp |= PLANE_WM_EN; | |
3365 | ||
3366 | r->plane_trans[pipe][i] = temp; | |
3367 | } | |
3368 | ||
3369 | temp = 0; | |
4969d33e MR |
3370 | temp |= p_wm->trans_wm.plane_res_l[PLANE_CURSOR] << PLANE_WM_LINES_SHIFT; |
3371 | temp |= p_wm->trans_wm.plane_res_b[PLANE_CURSOR]; | |
3372 | if (p_wm->trans_wm.plane_en[PLANE_CURSOR]) | |
9414f563 DL |
3373 | temp |= PLANE_WM_EN; |
3374 | ||
4969d33e | 3375 | r->plane_trans[pipe][PLANE_CURSOR] = temp; |
9414f563 | 3376 | |
2d41c0b5 PB |
3377 | r->wm_linetime[pipe] = p_wm->linetime; |
3378 | } | |
3379 | ||
f0f59a00 VS |
3380 | static void skl_ddb_entry_write(struct drm_i915_private *dev_priv, |
3381 | i915_reg_t reg, | |
16160e3d DL |
3382 | const struct skl_ddb_entry *entry) |
3383 | { | |
3384 | if (entry->end) | |
3385 | I915_WRITE(reg, (entry->end - 1) << 16 | entry->start); | |
3386 | else | |
3387 | I915_WRITE(reg, 0); | |
3388 | } | |
3389 | ||
2d41c0b5 PB |
3390 | static void skl_write_wm_values(struct drm_i915_private *dev_priv, |
3391 | const struct skl_wm_values *new) | |
3392 | { | |
3393 | struct drm_device *dev = dev_priv->dev; | |
3394 | struct intel_crtc *crtc; | |
3395 | ||
19c8054c | 3396 | for_each_intel_crtc(dev, crtc) { |
2d41c0b5 PB |
3397 | int i, level, max_level = ilk_wm_max_level(dev); |
3398 | enum pipe pipe = crtc->pipe; | |
3399 | ||
5d374d96 DL |
3400 | if (!new->dirty[pipe]) |
3401 | continue; | |
8211bd5b | 3402 | |
5d374d96 | 3403 | I915_WRITE(PIPE_WM_LINETIME(pipe), new->wm_linetime[pipe]); |
8211bd5b | 3404 | |
5d374d96 DL |
3405 | for (level = 0; level <= max_level; level++) { |
3406 | for (i = 0; i < intel_num_planes(crtc); i++) | |
3407 | I915_WRITE(PLANE_WM(pipe, i, level), | |
3408 | new->plane[pipe][i][level]); | |
3409 | I915_WRITE(CUR_WM(pipe, level), | |
4969d33e | 3410 | new->plane[pipe][PLANE_CURSOR][level]); |
2d41c0b5 | 3411 | } |
5d374d96 DL |
3412 | for (i = 0; i < intel_num_planes(crtc); i++) |
3413 | I915_WRITE(PLANE_WM_TRANS(pipe, i), | |
3414 | new->plane_trans[pipe][i]); | |
4969d33e MR |
3415 | I915_WRITE(CUR_WM_TRANS(pipe), |
3416 | new->plane_trans[pipe][PLANE_CURSOR]); | |
5d374d96 | 3417 | |
2cd601c6 | 3418 | for (i = 0; i < intel_num_planes(crtc); i++) { |
5d374d96 DL |
3419 | skl_ddb_entry_write(dev_priv, |
3420 | PLANE_BUF_CFG(pipe, i), | |
3421 | &new->ddb.plane[pipe][i]); | |
2cd601c6 CK |
3422 | skl_ddb_entry_write(dev_priv, |
3423 | PLANE_NV12_BUF_CFG(pipe, i), | |
3424 | &new->ddb.y_plane[pipe][i]); | |
3425 | } | |
5d374d96 DL |
3426 | |
3427 | skl_ddb_entry_write(dev_priv, CUR_BUF_CFG(pipe), | |
4969d33e | 3428 | &new->ddb.plane[pipe][PLANE_CURSOR]); |
2d41c0b5 | 3429 | } |
2d41c0b5 PB |
3430 | } |
3431 | ||
0e8fb7ba DL |
3432 | /* |
3433 | * When setting up a new DDB allocation arrangement, we need to correctly | |
3434 | * sequence the times at which the new allocations for the pipes are taken into | |
3435 | * account or we'll have pipes fetching from space previously allocated to | |
3436 | * another pipe. | |
3437 | * | |
3438 | * Roughly the sequence looks like: | |
3439 | * 1. re-allocate the pipe(s) with the allocation being reduced and not | |
3440 | * overlapping with a previous light-up pipe (another way to put it is: | |
3441 | * pipes with their new allocation strickly included into their old ones). | |
3442 | * 2. re-allocate the other pipes that get their allocation reduced | |
3443 | * 3. allocate the pipes having their allocation increased | |
3444 | * | |
3445 | * Steps 1. and 2. are here to take care of the following case: | |
3446 | * - Initially DDB looks like this: | |
3447 | * | B | C | | |
3448 | * - enable pipe A. | |
3449 | * - pipe B has a reduced DDB allocation that overlaps with the old pipe C | |
3450 | * allocation | |
3451 | * | A | B | C | | |
3452 | * | |
3453 | * We need to sequence the re-allocation: C, B, A (and not B, C, A). | |
3454 | */ | |
3455 | ||
d21b795c DL |
3456 | static void |
3457 | skl_wm_flush_pipe(struct drm_i915_private *dev_priv, enum pipe pipe, int pass) | |
0e8fb7ba | 3458 | { |
0e8fb7ba DL |
3459 | int plane; |
3460 | ||
d21b795c DL |
3461 | DRM_DEBUG_KMS("flush pipe %c (pass %d)\n", pipe_name(pipe), pass); |
3462 | ||
dd740780 | 3463 | for_each_plane(dev_priv, pipe, plane) { |
0e8fb7ba DL |
3464 | I915_WRITE(PLANE_SURF(pipe, plane), |
3465 | I915_READ(PLANE_SURF(pipe, plane))); | |
3466 | } | |
3467 | I915_WRITE(CURBASE(pipe), I915_READ(CURBASE(pipe))); | |
3468 | } | |
3469 | ||
3470 | static bool | |
3471 | skl_ddb_allocation_included(const struct skl_ddb_allocation *old, | |
3472 | const struct skl_ddb_allocation *new, | |
3473 | enum pipe pipe) | |
3474 | { | |
3475 | uint16_t old_size, new_size; | |
3476 | ||
3477 | old_size = skl_ddb_entry_size(&old->pipe[pipe]); | |
3478 | new_size = skl_ddb_entry_size(&new->pipe[pipe]); | |
3479 | ||
3480 | return old_size != new_size && | |
3481 | new->pipe[pipe].start >= old->pipe[pipe].start && | |
3482 | new->pipe[pipe].end <= old->pipe[pipe].end; | |
3483 | } | |
3484 | ||
3485 | static void skl_flush_wm_values(struct drm_i915_private *dev_priv, | |
3486 | struct skl_wm_values *new_values) | |
3487 | { | |
3488 | struct drm_device *dev = dev_priv->dev; | |
3489 | struct skl_ddb_allocation *cur_ddb, *new_ddb; | |
c929cb45 | 3490 | bool reallocated[I915_MAX_PIPES] = {}; |
0e8fb7ba DL |
3491 | struct intel_crtc *crtc; |
3492 | enum pipe pipe; | |
3493 | ||
3494 | new_ddb = &new_values->ddb; | |
3495 | cur_ddb = &dev_priv->wm.skl_hw.ddb; | |
3496 | ||
3497 | /* | |
3498 | * First pass: flush the pipes with the new allocation contained into | |
3499 | * the old space. | |
3500 | * | |
3501 | * We'll wait for the vblank on those pipes to ensure we can safely | |
3502 | * re-allocate the freed space without this pipe fetching from it. | |
3503 | */ | |
3504 | for_each_intel_crtc(dev, crtc) { | |
3505 | if (!crtc->active) | |
3506 | continue; | |
3507 | ||
3508 | pipe = crtc->pipe; | |
3509 | ||
3510 | if (!skl_ddb_allocation_included(cur_ddb, new_ddb, pipe)) | |
3511 | continue; | |
3512 | ||
d21b795c | 3513 | skl_wm_flush_pipe(dev_priv, pipe, 1); |
0e8fb7ba DL |
3514 | intel_wait_for_vblank(dev, pipe); |
3515 | ||
3516 | reallocated[pipe] = true; | |
3517 | } | |
3518 | ||
3519 | ||
3520 | /* | |
3521 | * Second pass: flush the pipes that are having their allocation | |
3522 | * reduced, but overlapping with a previous allocation. | |
3523 | * | |
3524 | * Here as well we need to wait for the vblank to make sure the freed | |
3525 | * space is not used anymore. | |
3526 | */ | |
3527 | for_each_intel_crtc(dev, crtc) { | |
3528 | if (!crtc->active) | |
3529 | continue; | |
3530 | ||
3531 | pipe = crtc->pipe; | |
3532 | ||
3533 | if (reallocated[pipe]) | |
3534 | continue; | |
3535 | ||
3536 | if (skl_ddb_entry_size(&new_ddb->pipe[pipe]) < | |
3537 | skl_ddb_entry_size(&cur_ddb->pipe[pipe])) { | |
d21b795c | 3538 | skl_wm_flush_pipe(dev_priv, pipe, 2); |
0e8fb7ba | 3539 | intel_wait_for_vblank(dev, pipe); |
d9d8e6b3 | 3540 | reallocated[pipe] = true; |
0e8fb7ba | 3541 | } |
0e8fb7ba DL |
3542 | } |
3543 | ||
3544 | /* | |
3545 | * Third pass: flush the pipes that got more space allocated. | |
3546 | * | |
3547 | * We don't need to actively wait for the update here, next vblank | |
3548 | * will just get more DDB space with the correct WM values. | |
3549 | */ | |
3550 | for_each_intel_crtc(dev, crtc) { | |
3551 | if (!crtc->active) | |
3552 | continue; | |
3553 | ||
3554 | pipe = crtc->pipe; | |
3555 | ||
3556 | /* | |
3557 | * At this point, only the pipes more space than before are | |
3558 | * left to re-allocate. | |
3559 | */ | |
3560 | if (reallocated[pipe]) | |
3561 | continue; | |
3562 | ||
d21b795c | 3563 | skl_wm_flush_pipe(dev_priv, pipe, 3); |
0e8fb7ba DL |
3564 | } |
3565 | } | |
3566 | ||
2d41c0b5 | 3567 | static bool skl_update_pipe_wm(struct drm_crtc *crtc, |
2d41c0b5 PB |
3568 | struct skl_ddb_allocation *ddb, /* out */ |
3569 | struct skl_pipe_wm *pipe_wm /* out */) | |
3570 | { | |
3571 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
024c9045 | 3572 | struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state); |
2d41c0b5 | 3573 | |
aa363136 | 3574 | skl_allocate_pipe_ddb(cstate, ddb); |
024c9045 | 3575 | skl_compute_pipe_wm(cstate, ddb, pipe_wm); |
2d41c0b5 | 3576 | |
4e0963c7 | 3577 | if (!memcmp(&intel_crtc->wm.active.skl, pipe_wm, sizeof(*pipe_wm))) |
2d41c0b5 PB |
3578 | return false; |
3579 | ||
4e0963c7 | 3580 | intel_crtc->wm.active.skl = *pipe_wm; |
2cd601c6 | 3581 | |
2d41c0b5 PB |
3582 | return true; |
3583 | } | |
3584 | ||
3585 | static void skl_update_other_pipe_wm(struct drm_device *dev, | |
3586 | struct drm_crtc *crtc, | |
2d41c0b5 PB |
3587 | struct skl_wm_values *r) |
3588 | { | |
3589 | struct intel_crtc *intel_crtc; | |
3590 | struct intel_crtc *this_crtc = to_intel_crtc(crtc); | |
3591 | ||
3592 | /* | |
3593 | * If the WM update hasn't changed the allocation for this_crtc (the | |
3594 | * crtc we are currently computing the new WM values for), other | |
3595 | * enabled crtcs will keep the same allocation and we don't need to | |
3596 | * recompute anything for them. | |
3597 | */ | |
3598 | if (!skl_ddb_allocation_changed(&r->ddb, this_crtc)) | |
3599 | return; | |
3600 | ||
3601 | /* | |
3602 | * Otherwise, because of this_crtc being freshly enabled/disabled, the | |
3603 | * other active pipes need new DDB allocation and WM values. | |
3604 | */ | |
19c8054c | 3605 | for_each_intel_crtc(dev, intel_crtc) { |
2d41c0b5 PB |
3606 | struct skl_pipe_wm pipe_wm = {}; |
3607 | bool wm_changed; | |
3608 | ||
3609 | if (this_crtc->pipe == intel_crtc->pipe) | |
3610 | continue; | |
3611 | ||
3612 | if (!intel_crtc->active) | |
3613 | continue; | |
3614 | ||
aa363136 | 3615 | wm_changed = skl_update_pipe_wm(&intel_crtc->base, |
2d41c0b5 PB |
3616 | &r->ddb, &pipe_wm); |
3617 | ||
3618 | /* | |
3619 | * If we end up re-computing the other pipe WM values, it's | |
3620 | * because it was really needed, so we expect the WM values to | |
3621 | * be different. | |
3622 | */ | |
3623 | WARN_ON(!wm_changed); | |
3624 | ||
024c9045 | 3625 | skl_compute_wm_results(dev, &pipe_wm, r, intel_crtc); |
2d41c0b5 PB |
3626 | r->dirty[intel_crtc->pipe] = true; |
3627 | } | |
3628 | } | |
3629 | ||
adda50b8 BP |
3630 | static void skl_clear_wm(struct skl_wm_values *watermarks, enum pipe pipe) |
3631 | { | |
3632 | watermarks->wm_linetime[pipe] = 0; | |
3633 | memset(watermarks->plane[pipe], 0, | |
3634 | sizeof(uint32_t) * 8 * I915_MAX_PLANES); | |
adda50b8 BP |
3635 | memset(watermarks->plane_trans[pipe], |
3636 | 0, sizeof(uint32_t) * I915_MAX_PLANES); | |
4969d33e | 3637 | watermarks->plane_trans[pipe][PLANE_CURSOR] = 0; |
adda50b8 BP |
3638 | |
3639 | /* Clear ddb entries for pipe */ | |
3640 | memset(&watermarks->ddb.pipe[pipe], 0, sizeof(struct skl_ddb_entry)); | |
3641 | memset(&watermarks->ddb.plane[pipe], 0, | |
3642 | sizeof(struct skl_ddb_entry) * I915_MAX_PLANES); | |
3643 | memset(&watermarks->ddb.y_plane[pipe], 0, | |
3644 | sizeof(struct skl_ddb_entry) * I915_MAX_PLANES); | |
4969d33e MR |
3645 | memset(&watermarks->ddb.plane[pipe][PLANE_CURSOR], 0, |
3646 | sizeof(struct skl_ddb_entry)); | |
adda50b8 BP |
3647 | |
3648 | } | |
3649 | ||
2d41c0b5 PB |
3650 | static void skl_update_wm(struct drm_crtc *crtc) |
3651 | { | |
3652 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3653 | struct drm_device *dev = crtc->dev; | |
3654 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2d41c0b5 | 3655 | struct skl_wm_values *results = &dev_priv->wm.skl_results; |
4e0963c7 MR |
3656 | struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state); |
3657 | struct skl_pipe_wm *pipe_wm = &cstate->wm.optimal.skl; | |
2d41c0b5 | 3658 | |
adda50b8 BP |
3659 | |
3660 | /* Clear all dirty flags */ | |
3661 | memset(results->dirty, 0, sizeof(bool) * I915_MAX_PIPES); | |
3662 | ||
3663 | skl_clear_wm(results, intel_crtc->pipe); | |
2d41c0b5 | 3664 | |
aa363136 | 3665 | if (!skl_update_pipe_wm(crtc, &results->ddb, pipe_wm)) |
2d41c0b5 PB |
3666 | return; |
3667 | ||
4e0963c7 | 3668 | skl_compute_wm_results(dev, pipe_wm, results, intel_crtc); |
2d41c0b5 PB |
3669 | results->dirty[intel_crtc->pipe] = true; |
3670 | ||
aa363136 | 3671 | skl_update_other_pipe_wm(dev, crtc, results); |
2d41c0b5 | 3672 | skl_write_wm_values(dev_priv, results); |
0e8fb7ba | 3673 | skl_flush_wm_values(dev_priv, results); |
53b0deb4 DL |
3674 | |
3675 | /* store the new configuration */ | |
3676 | dev_priv->wm.skl_hw = *results; | |
2d41c0b5 PB |
3677 | } |
3678 | ||
d890565c VS |
3679 | static void ilk_compute_wm_config(struct drm_device *dev, |
3680 | struct intel_wm_config *config) | |
3681 | { | |
3682 | struct intel_crtc *crtc; | |
3683 | ||
3684 | /* Compute the currently _active_ config */ | |
3685 | for_each_intel_crtc(dev, crtc) { | |
3686 | const struct intel_pipe_wm *wm = &crtc->wm.active.ilk; | |
3687 | ||
3688 | if (!wm->pipe_enabled) | |
3689 | continue; | |
3690 | ||
3691 | config->sprites_enabled |= wm->sprites_enabled; | |
3692 | config->sprites_scaled |= wm->sprites_scaled; | |
3693 | config->num_pipes_active++; | |
3694 | } | |
3695 | } | |
3696 | ||
ed4a6a7c | 3697 | static void ilk_program_watermarks(struct drm_i915_private *dev_priv) |
801bcfff | 3698 | { |
ed4a6a7c | 3699 | struct drm_device *dev = dev_priv->dev; |
b9d5c839 | 3700 | struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm; |
820c1980 | 3701 | struct ilk_wm_maximums max; |
d890565c | 3702 | struct intel_wm_config config = {}; |
820c1980 | 3703 | struct ilk_wm_values results = {}; |
77c122bc | 3704 | enum intel_ddb_partitioning partitioning; |
261a27d1 | 3705 | |
d890565c VS |
3706 | ilk_compute_wm_config(dev, &config); |
3707 | ||
3708 | ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_1_2, &max); | |
3709 | ilk_wm_merge(dev, &config, &max, &lp_wm_1_2); | |
a485bfb8 VS |
3710 | |
3711 | /* 5/6 split only in single pipe config on IVB+ */ | |
ec98c8d1 | 3712 | if (INTEL_INFO(dev)->gen >= 7 && |
d890565c VS |
3713 | config.num_pipes_active == 1 && config.sprites_enabled) { |
3714 | ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_5_6, &max); | |
3715 | ilk_wm_merge(dev, &config, &max, &lp_wm_5_6); | |
0362c781 | 3716 | |
820c1980 | 3717 | best_lp_wm = ilk_find_best_result(dev, &lp_wm_1_2, &lp_wm_5_6); |
861f3389 | 3718 | } else { |
198a1e9b | 3719 | best_lp_wm = &lp_wm_1_2; |
861f3389 PZ |
3720 | } |
3721 | ||
198a1e9b | 3722 | partitioning = (best_lp_wm == &lp_wm_1_2) ? |
77c122bc | 3723 | INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6; |
801bcfff | 3724 | |
820c1980 | 3725 | ilk_compute_wm_results(dev, best_lp_wm, partitioning, &results); |
609cedef | 3726 | |
820c1980 | 3727 | ilk_write_wm_values(dev_priv, &results); |
1011d8c4 PZ |
3728 | } |
3729 | ||
ed4a6a7c | 3730 | static void ilk_initial_watermarks(struct intel_crtc_state *cstate) |
b9d5c839 | 3731 | { |
ed4a6a7c MR |
3732 | struct drm_i915_private *dev_priv = to_i915(cstate->base.crtc->dev); |
3733 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); | |
b9d5c839 | 3734 | |
ed4a6a7c MR |
3735 | mutex_lock(&dev_priv->wm.wm_mutex); |
3736 | intel_crtc->wm.active.ilk = cstate->wm.intermediate; | |
3737 | ilk_program_watermarks(dev_priv); | |
3738 | mutex_unlock(&dev_priv->wm.wm_mutex); | |
3739 | } | |
bf220452 | 3740 | |
ed4a6a7c MR |
3741 | static void ilk_optimize_watermarks(struct intel_crtc_state *cstate) |
3742 | { | |
3743 | struct drm_i915_private *dev_priv = to_i915(cstate->base.crtc->dev); | |
3744 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); | |
bf220452 | 3745 | |
ed4a6a7c MR |
3746 | mutex_lock(&dev_priv->wm.wm_mutex); |
3747 | if (cstate->wm.need_postvbl_update) { | |
3748 | intel_crtc->wm.active.ilk = cstate->wm.optimal.ilk; | |
3749 | ilk_program_watermarks(dev_priv); | |
3750 | } | |
3751 | mutex_unlock(&dev_priv->wm.wm_mutex); | |
b9d5c839 VS |
3752 | } |
3753 | ||
3078999f PB |
3754 | static void skl_pipe_wm_active_state(uint32_t val, |
3755 | struct skl_pipe_wm *active, | |
3756 | bool is_transwm, | |
3757 | bool is_cursor, | |
3758 | int i, | |
3759 | int level) | |
3760 | { | |
3761 | bool is_enabled = (val & PLANE_WM_EN) != 0; | |
3762 | ||
3763 | if (!is_transwm) { | |
3764 | if (!is_cursor) { | |
3765 | active->wm[level].plane_en[i] = is_enabled; | |
3766 | active->wm[level].plane_res_b[i] = | |
3767 | val & PLANE_WM_BLOCKS_MASK; | |
3768 | active->wm[level].plane_res_l[i] = | |
3769 | (val >> PLANE_WM_LINES_SHIFT) & | |
3770 | PLANE_WM_LINES_MASK; | |
3771 | } else { | |
4969d33e MR |
3772 | active->wm[level].plane_en[PLANE_CURSOR] = is_enabled; |
3773 | active->wm[level].plane_res_b[PLANE_CURSOR] = | |
3078999f | 3774 | val & PLANE_WM_BLOCKS_MASK; |
4969d33e | 3775 | active->wm[level].plane_res_l[PLANE_CURSOR] = |
3078999f PB |
3776 | (val >> PLANE_WM_LINES_SHIFT) & |
3777 | PLANE_WM_LINES_MASK; | |
3778 | } | |
3779 | } else { | |
3780 | if (!is_cursor) { | |
3781 | active->trans_wm.plane_en[i] = is_enabled; | |
3782 | active->trans_wm.plane_res_b[i] = | |
3783 | val & PLANE_WM_BLOCKS_MASK; | |
3784 | active->trans_wm.plane_res_l[i] = | |
3785 | (val >> PLANE_WM_LINES_SHIFT) & | |
3786 | PLANE_WM_LINES_MASK; | |
3787 | } else { | |
4969d33e MR |
3788 | active->trans_wm.plane_en[PLANE_CURSOR] = is_enabled; |
3789 | active->trans_wm.plane_res_b[PLANE_CURSOR] = | |
3078999f | 3790 | val & PLANE_WM_BLOCKS_MASK; |
4969d33e | 3791 | active->trans_wm.plane_res_l[PLANE_CURSOR] = |
3078999f PB |
3792 | (val >> PLANE_WM_LINES_SHIFT) & |
3793 | PLANE_WM_LINES_MASK; | |
3794 | } | |
3795 | } | |
3796 | } | |
3797 | ||
3798 | static void skl_pipe_wm_get_hw_state(struct drm_crtc *crtc) | |
3799 | { | |
3800 | struct drm_device *dev = crtc->dev; | |
3801 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3802 | struct skl_wm_values *hw = &dev_priv->wm.skl_hw; | |
3803 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4e0963c7 MR |
3804 | struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state); |
3805 | struct skl_pipe_wm *active = &cstate->wm.optimal.skl; | |
3078999f PB |
3806 | enum pipe pipe = intel_crtc->pipe; |
3807 | int level, i, max_level; | |
3808 | uint32_t temp; | |
3809 | ||
3810 | max_level = ilk_wm_max_level(dev); | |
3811 | ||
3812 | hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe)); | |
3813 | ||
3814 | for (level = 0; level <= max_level; level++) { | |
3815 | for (i = 0; i < intel_num_planes(intel_crtc); i++) | |
3816 | hw->plane[pipe][i][level] = | |
3817 | I915_READ(PLANE_WM(pipe, i, level)); | |
4969d33e | 3818 | hw->plane[pipe][PLANE_CURSOR][level] = I915_READ(CUR_WM(pipe, level)); |
3078999f PB |
3819 | } |
3820 | ||
3821 | for (i = 0; i < intel_num_planes(intel_crtc); i++) | |
3822 | hw->plane_trans[pipe][i] = I915_READ(PLANE_WM_TRANS(pipe, i)); | |
4969d33e | 3823 | hw->plane_trans[pipe][PLANE_CURSOR] = I915_READ(CUR_WM_TRANS(pipe)); |
3078999f | 3824 | |
3ef00284 | 3825 | if (!intel_crtc->active) |
3078999f PB |
3826 | return; |
3827 | ||
3828 | hw->dirty[pipe] = true; | |
3829 | ||
3830 | active->linetime = hw->wm_linetime[pipe]; | |
3831 | ||
3832 | for (level = 0; level <= max_level; level++) { | |
3833 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
3834 | temp = hw->plane[pipe][i][level]; | |
3835 | skl_pipe_wm_active_state(temp, active, false, | |
3836 | false, i, level); | |
3837 | } | |
4969d33e | 3838 | temp = hw->plane[pipe][PLANE_CURSOR][level]; |
3078999f PB |
3839 | skl_pipe_wm_active_state(temp, active, false, true, i, level); |
3840 | } | |
3841 | ||
3842 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
3843 | temp = hw->plane_trans[pipe][i]; | |
3844 | skl_pipe_wm_active_state(temp, active, true, false, i, 0); | |
3845 | } | |
3846 | ||
4969d33e | 3847 | temp = hw->plane_trans[pipe][PLANE_CURSOR]; |
3078999f | 3848 | skl_pipe_wm_active_state(temp, active, true, true, i, 0); |
4e0963c7 MR |
3849 | |
3850 | intel_crtc->wm.active.skl = *active; | |
3078999f PB |
3851 | } |
3852 | ||
3853 | void skl_wm_get_hw_state(struct drm_device *dev) | |
3854 | { | |
a269c583 DL |
3855 | struct drm_i915_private *dev_priv = dev->dev_private; |
3856 | struct skl_ddb_allocation *ddb = &dev_priv->wm.skl_hw.ddb; | |
3078999f PB |
3857 | struct drm_crtc *crtc; |
3858 | ||
a269c583 | 3859 | skl_ddb_get_hw_state(dev_priv, ddb); |
3078999f PB |
3860 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
3861 | skl_pipe_wm_get_hw_state(crtc); | |
3862 | } | |
3863 | ||
243e6a44 VS |
3864 | static void ilk_pipe_wm_get_hw_state(struct drm_crtc *crtc) |
3865 | { | |
3866 | struct drm_device *dev = crtc->dev; | |
3867 | struct drm_i915_private *dev_priv = dev->dev_private; | |
820c1980 | 3868 | struct ilk_wm_values *hw = &dev_priv->wm.hw; |
243e6a44 | 3869 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
4e0963c7 MR |
3870 | struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state); |
3871 | struct intel_pipe_wm *active = &cstate->wm.optimal.ilk; | |
243e6a44 | 3872 | enum pipe pipe = intel_crtc->pipe; |
f0f59a00 | 3873 | static const i915_reg_t wm0_pipe_reg[] = { |
243e6a44 VS |
3874 | [PIPE_A] = WM0_PIPEA_ILK, |
3875 | [PIPE_B] = WM0_PIPEB_ILK, | |
3876 | [PIPE_C] = WM0_PIPEC_IVB, | |
3877 | }; | |
3878 | ||
3879 | hw->wm_pipe[pipe] = I915_READ(wm0_pipe_reg[pipe]); | |
a42a5719 | 3880 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
ce0e0713 | 3881 | hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe)); |
243e6a44 | 3882 | |
3ef00284 | 3883 | active->pipe_enabled = intel_crtc->active; |
2a44b76b VS |
3884 | |
3885 | if (active->pipe_enabled) { | |
243e6a44 VS |
3886 | u32 tmp = hw->wm_pipe[pipe]; |
3887 | ||
3888 | /* | |
3889 | * For active pipes LP0 watermark is marked as | |
3890 | * enabled, and LP1+ watermaks as disabled since | |
3891 | * we can't really reverse compute them in case | |
3892 | * multiple pipes are active. | |
3893 | */ | |
3894 | active->wm[0].enable = true; | |
3895 | active->wm[0].pri_val = (tmp & WM0_PIPE_PLANE_MASK) >> WM0_PIPE_PLANE_SHIFT; | |
3896 | active->wm[0].spr_val = (tmp & WM0_PIPE_SPRITE_MASK) >> WM0_PIPE_SPRITE_SHIFT; | |
3897 | active->wm[0].cur_val = tmp & WM0_PIPE_CURSOR_MASK; | |
3898 | active->linetime = hw->wm_linetime[pipe]; | |
3899 | } else { | |
3900 | int level, max_level = ilk_wm_max_level(dev); | |
3901 | ||
3902 | /* | |
3903 | * For inactive pipes, all watermark levels | |
3904 | * should be marked as enabled but zeroed, | |
3905 | * which is what we'd compute them to. | |
3906 | */ | |
3907 | for (level = 0; level <= max_level; level++) | |
3908 | active->wm[level].enable = true; | |
3909 | } | |
4e0963c7 MR |
3910 | |
3911 | intel_crtc->wm.active.ilk = *active; | |
243e6a44 VS |
3912 | } |
3913 | ||
6eb1a681 VS |
3914 | #define _FW_WM(value, plane) \ |
3915 | (((value) & DSPFW_ ## plane ## _MASK) >> DSPFW_ ## plane ## _SHIFT) | |
3916 | #define _FW_WM_VLV(value, plane) \ | |
3917 | (((value) & DSPFW_ ## plane ## _MASK_VLV) >> DSPFW_ ## plane ## _SHIFT) | |
3918 | ||
3919 | static void vlv_read_wm_values(struct drm_i915_private *dev_priv, | |
3920 | struct vlv_wm_values *wm) | |
3921 | { | |
3922 | enum pipe pipe; | |
3923 | uint32_t tmp; | |
3924 | ||
3925 | for_each_pipe(dev_priv, pipe) { | |
3926 | tmp = I915_READ(VLV_DDL(pipe)); | |
3927 | ||
3928 | wm->ddl[pipe].primary = | |
3929 | (tmp >> DDL_PLANE_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
3930 | wm->ddl[pipe].cursor = | |
3931 | (tmp >> DDL_CURSOR_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
3932 | wm->ddl[pipe].sprite[0] = | |
3933 | (tmp >> DDL_SPRITE_SHIFT(0)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
3934 | wm->ddl[pipe].sprite[1] = | |
3935 | (tmp >> DDL_SPRITE_SHIFT(1)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
3936 | } | |
3937 | ||
3938 | tmp = I915_READ(DSPFW1); | |
3939 | wm->sr.plane = _FW_WM(tmp, SR); | |
3940 | wm->pipe[PIPE_B].cursor = _FW_WM(tmp, CURSORB); | |
3941 | wm->pipe[PIPE_B].primary = _FW_WM_VLV(tmp, PLANEB); | |
3942 | wm->pipe[PIPE_A].primary = _FW_WM_VLV(tmp, PLANEA); | |
3943 | ||
3944 | tmp = I915_READ(DSPFW2); | |
3945 | wm->pipe[PIPE_A].sprite[1] = _FW_WM_VLV(tmp, SPRITEB); | |
3946 | wm->pipe[PIPE_A].cursor = _FW_WM(tmp, CURSORA); | |
3947 | wm->pipe[PIPE_A].sprite[0] = _FW_WM_VLV(tmp, SPRITEA); | |
3948 | ||
3949 | tmp = I915_READ(DSPFW3); | |
3950 | wm->sr.cursor = _FW_WM(tmp, CURSOR_SR); | |
3951 | ||
3952 | if (IS_CHERRYVIEW(dev_priv)) { | |
3953 | tmp = I915_READ(DSPFW7_CHV); | |
3954 | wm->pipe[PIPE_B].sprite[1] = _FW_WM_VLV(tmp, SPRITED); | |
3955 | wm->pipe[PIPE_B].sprite[0] = _FW_WM_VLV(tmp, SPRITEC); | |
3956 | ||
3957 | tmp = I915_READ(DSPFW8_CHV); | |
3958 | wm->pipe[PIPE_C].sprite[1] = _FW_WM_VLV(tmp, SPRITEF); | |
3959 | wm->pipe[PIPE_C].sprite[0] = _FW_WM_VLV(tmp, SPRITEE); | |
3960 | ||
3961 | tmp = I915_READ(DSPFW9_CHV); | |
3962 | wm->pipe[PIPE_C].primary = _FW_WM_VLV(tmp, PLANEC); | |
3963 | wm->pipe[PIPE_C].cursor = _FW_WM(tmp, CURSORC); | |
3964 | ||
3965 | tmp = I915_READ(DSPHOWM); | |
3966 | wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9; | |
3967 | wm->pipe[PIPE_C].sprite[1] |= _FW_WM(tmp, SPRITEF_HI) << 8; | |
3968 | wm->pipe[PIPE_C].sprite[0] |= _FW_WM(tmp, SPRITEE_HI) << 8; | |
3969 | wm->pipe[PIPE_C].primary |= _FW_WM(tmp, PLANEC_HI) << 8; | |
3970 | wm->pipe[PIPE_B].sprite[1] |= _FW_WM(tmp, SPRITED_HI) << 8; | |
3971 | wm->pipe[PIPE_B].sprite[0] |= _FW_WM(tmp, SPRITEC_HI) << 8; | |
3972 | wm->pipe[PIPE_B].primary |= _FW_WM(tmp, PLANEB_HI) << 8; | |
3973 | wm->pipe[PIPE_A].sprite[1] |= _FW_WM(tmp, SPRITEB_HI) << 8; | |
3974 | wm->pipe[PIPE_A].sprite[0] |= _FW_WM(tmp, SPRITEA_HI) << 8; | |
3975 | wm->pipe[PIPE_A].primary |= _FW_WM(tmp, PLANEA_HI) << 8; | |
3976 | } else { | |
3977 | tmp = I915_READ(DSPFW7); | |
3978 | wm->pipe[PIPE_B].sprite[1] = _FW_WM_VLV(tmp, SPRITED); | |
3979 | wm->pipe[PIPE_B].sprite[0] = _FW_WM_VLV(tmp, SPRITEC); | |
3980 | ||
3981 | tmp = I915_READ(DSPHOWM); | |
3982 | wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9; | |
3983 | wm->pipe[PIPE_B].sprite[1] |= _FW_WM(tmp, SPRITED_HI) << 8; | |
3984 | wm->pipe[PIPE_B].sprite[0] |= _FW_WM(tmp, SPRITEC_HI) << 8; | |
3985 | wm->pipe[PIPE_B].primary |= _FW_WM(tmp, PLANEB_HI) << 8; | |
3986 | wm->pipe[PIPE_A].sprite[1] |= _FW_WM(tmp, SPRITEB_HI) << 8; | |
3987 | wm->pipe[PIPE_A].sprite[0] |= _FW_WM(tmp, SPRITEA_HI) << 8; | |
3988 | wm->pipe[PIPE_A].primary |= _FW_WM(tmp, PLANEA_HI) << 8; | |
3989 | } | |
3990 | } | |
3991 | ||
3992 | #undef _FW_WM | |
3993 | #undef _FW_WM_VLV | |
3994 | ||
3995 | void vlv_wm_get_hw_state(struct drm_device *dev) | |
3996 | { | |
3997 | struct drm_i915_private *dev_priv = to_i915(dev); | |
3998 | struct vlv_wm_values *wm = &dev_priv->wm.vlv; | |
3999 | struct intel_plane *plane; | |
4000 | enum pipe pipe; | |
4001 | u32 val; | |
4002 | ||
4003 | vlv_read_wm_values(dev_priv, wm); | |
4004 | ||
4005 | for_each_intel_plane(dev, plane) { | |
4006 | switch (plane->base.type) { | |
4007 | int sprite; | |
4008 | case DRM_PLANE_TYPE_CURSOR: | |
4009 | plane->wm.fifo_size = 63; | |
4010 | break; | |
4011 | case DRM_PLANE_TYPE_PRIMARY: | |
4012 | plane->wm.fifo_size = vlv_get_fifo_size(dev, plane->pipe, 0); | |
4013 | break; | |
4014 | case DRM_PLANE_TYPE_OVERLAY: | |
4015 | sprite = plane->plane; | |
4016 | plane->wm.fifo_size = vlv_get_fifo_size(dev, plane->pipe, sprite + 1); | |
4017 | break; | |
4018 | } | |
4019 | } | |
4020 | ||
4021 | wm->cxsr = I915_READ(FW_BLC_SELF_VLV) & FW_CSPWRDWNEN; | |
4022 | wm->level = VLV_WM_LEVEL_PM2; | |
4023 | ||
4024 | if (IS_CHERRYVIEW(dev_priv)) { | |
4025 | mutex_lock(&dev_priv->rps.hw_lock); | |
4026 | ||
4027 | val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ); | |
4028 | if (val & DSP_MAXFIFO_PM5_ENABLE) | |
4029 | wm->level = VLV_WM_LEVEL_PM5; | |
4030 | ||
58590c14 VS |
4031 | /* |
4032 | * If DDR DVFS is disabled in the BIOS, Punit | |
4033 | * will never ack the request. So if that happens | |
4034 | * assume we don't have to enable/disable DDR DVFS | |
4035 | * dynamically. To test that just set the REQ_ACK | |
4036 | * bit to poke the Punit, but don't change the | |
4037 | * HIGH/LOW bits so that we don't actually change | |
4038 | * the current state. | |
4039 | */ | |
6eb1a681 | 4040 | val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); |
58590c14 VS |
4041 | val |= FORCE_DDR_FREQ_REQ_ACK; |
4042 | vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val); | |
4043 | ||
4044 | if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) & | |
4045 | FORCE_DDR_FREQ_REQ_ACK) == 0, 3)) { | |
4046 | DRM_DEBUG_KMS("Punit not acking DDR DVFS request, " | |
4047 | "assuming DDR DVFS is disabled\n"); | |
4048 | dev_priv->wm.max_level = VLV_WM_LEVEL_PM5; | |
4049 | } else { | |
4050 | val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); | |
4051 | if ((val & FORCE_DDR_HIGH_FREQ) == 0) | |
4052 | wm->level = VLV_WM_LEVEL_DDR_DVFS; | |
4053 | } | |
6eb1a681 VS |
4054 | |
4055 | mutex_unlock(&dev_priv->rps.hw_lock); | |
4056 | } | |
4057 | ||
4058 | for_each_pipe(dev_priv, pipe) | |
4059 | DRM_DEBUG_KMS("Initial watermarks: pipe %c, plane=%d, cursor=%d, sprite0=%d, sprite1=%d\n", | |
4060 | pipe_name(pipe), wm->pipe[pipe].primary, wm->pipe[pipe].cursor, | |
4061 | wm->pipe[pipe].sprite[0], wm->pipe[pipe].sprite[1]); | |
4062 | ||
4063 | DRM_DEBUG_KMS("Initial watermarks: SR plane=%d, SR cursor=%d level=%d cxsr=%d\n", | |
4064 | wm->sr.plane, wm->sr.cursor, wm->level, wm->cxsr); | |
4065 | } | |
4066 | ||
243e6a44 VS |
4067 | void ilk_wm_get_hw_state(struct drm_device *dev) |
4068 | { | |
4069 | struct drm_i915_private *dev_priv = dev->dev_private; | |
820c1980 | 4070 | struct ilk_wm_values *hw = &dev_priv->wm.hw; |
243e6a44 VS |
4071 | struct drm_crtc *crtc; |
4072 | ||
70e1e0ec | 4073 | for_each_crtc(dev, crtc) |
243e6a44 VS |
4074 | ilk_pipe_wm_get_hw_state(crtc); |
4075 | ||
4076 | hw->wm_lp[0] = I915_READ(WM1_LP_ILK); | |
4077 | hw->wm_lp[1] = I915_READ(WM2_LP_ILK); | |
4078 | hw->wm_lp[2] = I915_READ(WM3_LP_ILK); | |
4079 | ||
4080 | hw->wm_lp_spr[0] = I915_READ(WM1S_LP_ILK); | |
cfa7698b VS |
4081 | if (INTEL_INFO(dev)->gen >= 7) { |
4082 | hw->wm_lp_spr[1] = I915_READ(WM2S_LP_IVB); | |
4083 | hw->wm_lp_spr[2] = I915_READ(WM3S_LP_IVB); | |
4084 | } | |
243e6a44 | 4085 | |
a42a5719 | 4086 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
ac9545fd VS |
4087 | hw->partitioning = (I915_READ(WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ? |
4088 | INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; | |
4089 | else if (IS_IVYBRIDGE(dev)) | |
4090 | hw->partitioning = (I915_READ(DISP_ARB_CTL2) & DISP_DATA_PARTITION_5_6) ? | |
4091 | INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; | |
243e6a44 VS |
4092 | |
4093 | hw->enable_fbc_wm = | |
4094 | !(I915_READ(DISP_ARB_CTL) & DISP_FBC_WM_DIS); | |
4095 | } | |
4096 | ||
b445e3b0 ED |
4097 | /** |
4098 | * intel_update_watermarks - update FIFO watermark values based on current modes | |
4099 | * | |
4100 | * Calculate watermark values for the various WM regs based on current mode | |
4101 | * and plane configuration. | |
4102 | * | |
4103 | * There are several cases to deal with here: | |
4104 | * - normal (i.e. non-self-refresh) | |
4105 | * - self-refresh (SR) mode | |
4106 | * - lines are large relative to FIFO size (buffer can hold up to 2) | |
4107 | * - lines are small relative to FIFO size (buffer can hold more than 2 | |
4108 | * lines), so need to account for TLB latency | |
4109 | * | |
4110 | * The normal calculation is: | |
4111 | * watermark = dotclock * bytes per pixel * latency | |
4112 | * where latency is platform & configuration dependent (we assume pessimal | |
4113 | * values here). | |
4114 | * | |
4115 | * The SR calculation is: | |
4116 | * watermark = (trunc(latency/line time)+1) * surface width * | |
4117 | * bytes per pixel | |
4118 | * where | |
4119 | * line time = htotal / dotclock | |
4120 | * surface width = hdisplay for normal plane and 64 for cursor | |
4121 | * and latency is assumed to be high, as above. | |
4122 | * | |
4123 | * The final value programmed to the register should always be rounded up, | |
4124 | * and include an extra 2 entries to account for clock crossings. | |
4125 | * | |
4126 | * We don't use the sprite, so we can ignore that. And on Crestline we have | |
4127 | * to set the non-SR watermarks to 8. | |
4128 | */ | |
46ba614c | 4129 | void intel_update_watermarks(struct drm_crtc *crtc) |
b445e3b0 | 4130 | { |
46ba614c | 4131 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; |
b445e3b0 ED |
4132 | |
4133 | if (dev_priv->display.update_wm) | |
46ba614c | 4134 | dev_priv->display.update_wm(crtc); |
b445e3b0 ED |
4135 | } |
4136 | ||
e2828914 | 4137 | /* |
9270388e | 4138 | * Lock protecting IPS related data structures |
9270388e DV |
4139 | */ |
4140 | DEFINE_SPINLOCK(mchdev_lock); | |
4141 | ||
4142 | /* Global for IPS driver to get at the current i915 device. Protected by | |
4143 | * mchdev_lock. */ | |
4144 | static struct drm_i915_private *i915_mch_dev; | |
4145 | ||
2b4e57bd ED |
4146 | bool ironlake_set_drps(struct drm_device *dev, u8 val) |
4147 | { | |
4148 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4149 | u16 rgvswctl; | |
4150 | ||
9270388e DV |
4151 | assert_spin_locked(&mchdev_lock); |
4152 | ||
2b4e57bd ED |
4153 | rgvswctl = I915_READ16(MEMSWCTL); |
4154 | if (rgvswctl & MEMCTL_CMD_STS) { | |
4155 | DRM_DEBUG("gpu busy, RCS change rejected\n"); | |
4156 | return false; /* still busy with another command */ | |
4157 | } | |
4158 | ||
4159 | rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | | |
4160 | (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; | |
4161 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
4162 | POSTING_READ16(MEMSWCTL); | |
4163 | ||
4164 | rgvswctl |= MEMCTL_CMD_STS; | |
4165 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
4166 | ||
4167 | return true; | |
4168 | } | |
4169 | ||
8090c6b9 | 4170 | static void ironlake_enable_drps(struct drm_device *dev) |
2b4e57bd ED |
4171 | { |
4172 | struct drm_i915_private *dev_priv = dev->dev_private; | |
84f1b20f | 4173 | u32 rgvmodectl; |
2b4e57bd ED |
4174 | u8 fmax, fmin, fstart, vstart; |
4175 | ||
9270388e DV |
4176 | spin_lock_irq(&mchdev_lock); |
4177 | ||
84f1b20f TU |
4178 | rgvmodectl = I915_READ(MEMMODECTL); |
4179 | ||
2b4e57bd ED |
4180 | /* Enable temp reporting */ |
4181 | I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN); | |
4182 | I915_WRITE16(TSC1, I915_READ(TSC1) | TSE); | |
4183 | ||
4184 | /* 100ms RC evaluation intervals */ | |
4185 | I915_WRITE(RCUPEI, 100000); | |
4186 | I915_WRITE(RCDNEI, 100000); | |
4187 | ||
4188 | /* Set max/min thresholds to 90ms and 80ms respectively */ | |
4189 | I915_WRITE(RCBMAXAVG, 90000); | |
4190 | I915_WRITE(RCBMINAVG, 80000); | |
4191 | ||
4192 | I915_WRITE(MEMIHYST, 1); | |
4193 | ||
4194 | /* Set up min, max, and cur for interrupt handling */ | |
4195 | fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT; | |
4196 | fmin = (rgvmodectl & MEMMODE_FMIN_MASK); | |
4197 | fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >> | |
4198 | MEMMODE_FSTART_SHIFT; | |
4199 | ||
616847e7 | 4200 | vstart = (I915_READ(PXVFREQ(fstart)) & PXVFREQ_PX_MASK) >> |
2b4e57bd ED |
4201 | PXVFREQ_PX_SHIFT; |
4202 | ||
20e4d407 DV |
4203 | dev_priv->ips.fmax = fmax; /* IPS callback will increase this */ |
4204 | dev_priv->ips.fstart = fstart; | |
2b4e57bd | 4205 | |
20e4d407 DV |
4206 | dev_priv->ips.max_delay = fstart; |
4207 | dev_priv->ips.min_delay = fmin; | |
4208 | dev_priv->ips.cur_delay = fstart; | |
2b4e57bd ED |
4209 | |
4210 | DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n", | |
4211 | fmax, fmin, fstart); | |
4212 | ||
4213 | I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN); | |
4214 | ||
4215 | /* | |
4216 | * Interrupts will be enabled in ironlake_irq_postinstall | |
4217 | */ | |
4218 | ||
4219 | I915_WRITE(VIDSTART, vstart); | |
4220 | POSTING_READ(VIDSTART); | |
4221 | ||
4222 | rgvmodectl |= MEMMODE_SWMODE_EN; | |
4223 | I915_WRITE(MEMMODECTL, rgvmodectl); | |
4224 | ||
9270388e | 4225 | if (wait_for_atomic((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10)) |
2b4e57bd | 4226 | DRM_ERROR("stuck trying to change perf mode\n"); |
dd92d8de | 4227 | mdelay(1); |
2b4e57bd ED |
4228 | |
4229 | ironlake_set_drps(dev, fstart); | |
4230 | ||
7d81c3e0 VS |
4231 | dev_priv->ips.last_count1 = I915_READ(DMIEC) + |
4232 | I915_READ(DDREC) + I915_READ(CSIEC); | |
20e4d407 | 4233 | dev_priv->ips.last_time1 = jiffies_to_msecs(jiffies); |
7d81c3e0 | 4234 | dev_priv->ips.last_count2 = I915_READ(GFXEC); |
5ed0bdf2 | 4235 | dev_priv->ips.last_time2 = ktime_get_raw_ns(); |
9270388e DV |
4236 | |
4237 | spin_unlock_irq(&mchdev_lock); | |
2b4e57bd ED |
4238 | } |
4239 | ||
8090c6b9 | 4240 | static void ironlake_disable_drps(struct drm_device *dev) |
2b4e57bd ED |
4241 | { |
4242 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9270388e DV |
4243 | u16 rgvswctl; |
4244 | ||
4245 | spin_lock_irq(&mchdev_lock); | |
4246 | ||
4247 | rgvswctl = I915_READ16(MEMSWCTL); | |
2b4e57bd ED |
4248 | |
4249 | /* Ack interrupts, disable EFC interrupt */ | |
4250 | I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN); | |
4251 | I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG); | |
4252 | I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT); | |
4253 | I915_WRITE(DEIIR, DE_PCU_EVENT); | |
4254 | I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT); | |
4255 | ||
4256 | /* Go back to the starting frequency */ | |
20e4d407 | 4257 | ironlake_set_drps(dev, dev_priv->ips.fstart); |
dd92d8de | 4258 | mdelay(1); |
2b4e57bd ED |
4259 | rgvswctl |= MEMCTL_CMD_STS; |
4260 | I915_WRITE(MEMSWCTL, rgvswctl); | |
dd92d8de | 4261 | mdelay(1); |
2b4e57bd | 4262 | |
9270388e | 4263 | spin_unlock_irq(&mchdev_lock); |
2b4e57bd ED |
4264 | } |
4265 | ||
acbe9475 DV |
4266 | /* There's a funny hw issue where the hw returns all 0 when reading from |
4267 | * GEN6_RP_INTERRUPT_LIMITS. Hence we always need to compute the desired value | |
4268 | * ourselves, instead of doing a rmw cycle (which might result in us clearing | |
4269 | * all limits and the gpu stuck at whatever frequency it is at atm). | |
4270 | */ | |
74ef1173 | 4271 | static u32 intel_rps_limits(struct drm_i915_private *dev_priv, u8 val) |
2b4e57bd | 4272 | { |
7b9e0ae6 | 4273 | u32 limits; |
2b4e57bd | 4274 | |
20b46e59 DV |
4275 | /* Only set the down limit when we've reached the lowest level to avoid |
4276 | * getting more interrupts, otherwise leave this clear. This prevents a | |
4277 | * race in the hw when coming out of rc6: There's a tiny window where | |
4278 | * the hw runs at the minimal clock before selecting the desired | |
4279 | * frequency, if the down threshold expires in that window we will not | |
4280 | * receive a down interrupt. */ | |
74ef1173 AG |
4281 | if (IS_GEN9(dev_priv->dev)) { |
4282 | limits = (dev_priv->rps.max_freq_softlimit) << 23; | |
4283 | if (val <= dev_priv->rps.min_freq_softlimit) | |
4284 | limits |= (dev_priv->rps.min_freq_softlimit) << 14; | |
4285 | } else { | |
4286 | limits = dev_priv->rps.max_freq_softlimit << 24; | |
4287 | if (val <= dev_priv->rps.min_freq_softlimit) | |
4288 | limits |= dev_priv->rps.min_freq_softlimit << 16; | |
4289 | } | |
20b46e59 DV |
4290 | |
4291 | return limits; | |
4292 | } | |
4293 | ||
dd75fdc8 CW |
4294 | static void gen6_set_rps_thresholds(struct drm_i915_private *dev_priv, u8 val) |
4295 | { | |
4296 | int new_power; | |
8a586437 AG |
4297 | u32 threshold_up = 0, threshold_down = 0; /* in % */ |
4298 | u32 ei_up = 0, ei_down = 0; | |
dd75fdc8 CW |
4299 | |
4300 | new_power = dev_priv->rps.power; | |
4301 | switch (dev_priv->rps.power) { | |
4302 | case LOW_POWER: | |
b39fb297 | 4303 | if (val > dev_priv->rps.efficient_freq + 1 && val > dev_priv->rps.cur_freq) |
dd75fdc8 CW |
4304 | new_power = BETWEEN; |
4305 | break; | |
4306 | ||
4307 | case BETWEEN: | |
b39fb297 | 4308 | if (val <= dev_priv->rps.efficient_freq && val < dev_priv->rps.cur_freq) |
dd75fdc8 | 4309 | new_power = LOW_POWER; |
b39fb297 | 4310 | else if (val >= dev_priv->rps.rp0_freq && val > dev_priv->rps.cur_freq) |
dd75fdc8 CW |
4311 | new_power = HIGH_POWER; |
4312 | break; | |
4313 | ||
4314 | case HIGH_POWER: | |
b39fb297 | 4315 | if (val < (dev_priv->rps.rp1_freq + dev_priv->rps.rp0_freq) >> 1 && val < dev_priv->rps.cur_freq) |
dd75fdc8 CW |
4316 | new_power = BETWEEN; |
4317 | break; | |
4318 | } | |
4319 | /* Max/min bins are special */ | |
aed242ff | 4320 | if (val <= dev_priv->rps.min_freq_softlimit) |
dd75fdc8 | 4321 | new_power = LOW_POWER; |
aed242ff | 4322 | if (val >= dev_priv->rps.max_freq_softlimit) |
dd75fdc8 CW |
4323 | new_power = HIGH_POWER; |
4324 | if (new_power == dev_priv->rps.power) | |
4325 | return; | |
4326 | ||
4327 | /* Note the units here are not exactly 1us, but 1280ns. */ | |
4328 | switch (new_power) { | |
4329 | case LOW_POWER: | |
4330 | /* Upclock if more than 95% busy over 16ms */ | |
8a586437 AG |
4331 | ei_up = 16000; |
4332 | threshold_up = 95; | |
dd75fdc8 CW |
4333 | |
4334 | /* Downclock if less than 85% busy over 32ms */ | |
8a586437 AG |
4335 | ei_down = 32000; |
4336 | threshold_down = 85; | |
dd75fdc8 CW |
4337 | break; |
4338 | ||
4339 | case BETWEEN: | |
4340 | /* Upclock if more than 90% busy over 13ms */ | |
8a586437 AG |
4341 | ei_up = 13000; |
4342 | threshold_up = 90; | |
dd75fdc8 CW |
4343 | |
4344 | /* Downclock if less than 75% busy over 32ms */ | |
8a586437 AG |
4345 | ei_down = 32000; |
4346 | threshold_down = 75; | |
dd75fdc8 CW |
4347 | break; |
4348 | ||
4349 | case HIGH_POWER: | |
4350 | /* Upclock if more than 85% busy over 10ms */ | |
8a586437 AG |
4351 | ei_up = 10000; |
4352 | threshold_up = 85; | |
dd75fdc8 CW |
4353 | |
4354 | /* Downclock if less than 60% busy over 32ms */ | |
8a586437 AG |
4355 | ei_down = 32000; |
4356 | threshold_down = 60; | |
dd75fdc8 CW |
4357 | break; |
4358 | } | |
4359 | ||
8a586437 AG |
4360 | I915_WRITE(GEN6_RP_UP_EI, |
4361 | GT_INTERVAL_FROM_US(dev_priv, ei_up)); | |
4362 | I915_WRITE(GEN6_RP_UP_THRESHOLD, | |
4363 | GT_INTERVAL_FROM_US(dev_priv, (ei_up * threshold_up / 100))); | |
4364 | ||
4365 | I915_WRITE(GEN6_RP_DOWN_EI, | |
4366 | GT_INTERVAL_FROM_US(dev_priv, ei_down)); | |
4367 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, | |
4368 | GT_INTERVAL_FROM_US(dev_priv, (ei_down * threshold_down / 100))); | |
4369 | ||
4370 | I915_WRITE(GEN6_RP_CONTROL, | |
4371 | GEN6_RP_MEDIA_TURBO | | |
4372 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
4373 | GEN6_RP_MEDIA_IS_GFX | | |
4374 | GEN6_RP_ENABLE | | |
4375 | GEN6_RP_UP_BUSY_AVG | | |
4376 | GEN6_RP_DOWN_IDLE_AVG); | |
4377 | ||
dd75fdc8 | 4378 | dev_priv->rps.power = new_power; |
8fb55197 CW |
4379 | dev_priv->rps.up_threshold = threshold_up; |
4380 | dev_priv->rps.down_threshold = threshold_down; | |
dd75fdc8 CW |
4381 | dev_priv->rps.last_adj = 0; |
4382 | } | |
4383 | ||
2876ce73 CW |
4384 | static u32 gen6_rps_pm_mask(struct drm_i915_private *dev_priv, u8 val) |
4385 | { | |
4386 | u32 mask = 0; | |
4387 | ||
4388 | if (val > dev_priv->rps.min_freq_softlimit) | |
6f4b12f8 | 4389 | mask |= GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_DOWN_THRESHOLD | GEN6_PM_RP_DOWN_TIMEOUT; |
2876ce73 | 4390 | if (val < dev_priv->rps.max_freq_softlimit) |
6f4b12f8 | 4391 | mask |= GEN6_PM_RP_UP_EI_EXPIRED | GEN6_PM_RP_UP_THRESHOLD; |
2876ce73 | 4392 | |
7b3c29f6 CW |
4393 | mask &= dev_priv->pm_rps_events; |
4394 | ||
59d02a1f | 4395 | return gen6_sanitize_rps_pm_mask(dev_priv, ~mask); |
2876ce73 CW |
4396 | } |
4397 | ||
b8a5ff8d JM |
4398 | /* gen6_set_rps is called to update the frequency request, but should also be |
4399 | * called when the range (min_delay and max_delay) is modified so that we can | |
4400 | * update the GEN6_RP_INTERRUPT_LIMITS register accordingly. */ | |
ffe02b40 | 4401 | static void gen6_set_rps(struct drm_device *dev, u8 val) |
20b46e59 DV |
4402 | { |
4403 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7b9e0ae6 | 4404 | |
23eafea6 | 4405 | /* WaGsvDisableTurbo: Workaround to disable turbo on BXT A* */ |
e87a005d | 4406 | if (IS_BXT_REVID(dev, 0, BXT_REVID_A1)) |
23eafea6 SAK |
4407 | return; |
4408 | ||
4fc688ce | 4409 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
aed242ff CW |
4410 | WARN_ON(val > dev_priv->rps.max_freq); |
4411 | WARN_ON(val < dev_priv->rps.min_freq); | |
004777cb | 4412 | |
eb64cad1 CW |
4413 | /* min/max delay may still have been modified so be sure to |
4414 | * write the limits value. | |
4415 | */ | |
4416 | if (val != dev_priv->rps.cur_freq) { | |
4417 | gen6_set_rps_thresholds(dev_priv, val); | |
b8a5ff8d | 4418 | |
5704195c AG |
4419 | if (IS_GEN9(dev)) |
4420 | I915_WRITE(GEN6_RPNSWREQ, | |
4421 | GEN9_FREQUENCY(val)); | |
4422 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
eb64cad1 CW |
4423 | I915_WRITE(GEN6_RPNSWREQ, |
4424 | HSW_FREQUENCY(val)); | |
4425 | else | |
4426 | I915_WRITE(GEN6_RPNSWREQ, | |
4427 | GEN6_FREQUENCY(val) | | |
4428 | GEN6_OFFSET(0) | | |
4429 | GEN6_AGGRESSIVE_TURBO); | |
b8a5ff8d | 4430 | } |
7b9e0ae6 | 4431 | |
7b9e0ae6 CW |
4432 | /* Make sure we continue to get interrupts |
4433 | * until we hit the minimum or maximum frequencies. | |
4434 | */ | |
74ef1173 | 4435 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, intel_rps_limits(dev_priv, val)); |
2876ce73 | 4436 | I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val)); |
7b9e0ae6 | 4437 | |
d5570a72 BW |
4438 | POSTING_READ(GEN6_RPNSWREQ); |
4439 | ||
b39fb297 | 4440 | dev_priv->rps.cur_freq = val; |
0f94592e | 4441 | trace_intel_gpu_freq_change(intel_gpu_freq(dev_priv, val)); |
2b4e57bd ED |
4442 | } |
4443 | ||
ffe02b40 VS |
4444 | static void valleyview_set_rps(struct drm_device *dev, u8 val) |
4445 | { | |
4446 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4447 | ||
4448 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
aed242ff CW |
4449 | WARN_ON(val > dev_priv->rps.max_freq); |
4450 | WARN_ON(val < dev_priv->rps.min_freq); | |
ffe02b40 VS |
4451 | |
4452 | if (WARN_ONCE(IS_CHERRYVIEW(dev) && (val & 1), | |
4453 | "Odd GPU freq value\n")) | |
4454 | val &= ~1; | |
4455 | ||
cd25dd5b D |
4456 | I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val)); |
4457 | ||
8fb55197 | 4458 | if (val != dev_priv->rps.cur_freq) { |
ffe02b40 | 4459 | vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val); |
8fb55197 CW |
4460 | if (!IS_CHERRYVIEW(dev_priv)) |
4461 | gen6_set_rps_thresholds(dev_priv, val); | |
4462 | } | |
ffe02b40 | 4463 | |
ffe02b40 VS |
4464 | dev_priv->rps.cur_freq = val; |
4465 | trace_intel_gpu_freq_change(intel_gpu_freq(dev_priv, val)); | |
4466 | } | |
4467 | ||
a7f6e231 | 4468 | /* vlv_set_rps_idle: Set the frequency to idle, if Gfx clocks are down |
76c3552f D |
4469 | * |
4470 | * * If Gfx is Idle, then | |
a7f6e231 D |
4471 | * 1. Forcewake Media well. |
4472 | * 2. Request idle freq. | |
4473 | * 3. Release Forcewake of Media well. | |
76c3552f D |
4474 | */ |
4475 | static void vlv_set_rps_idle(struct drm_i915_private *dev_priv) | |
4476 | { | |
aed242ff | 4477 | u32 val = dev_priv->rps.idle_freq; |
5549d25f | 4478 | |
aed242ff | 4479 | if (dev_priv->rps.cur_freq <= val) |
76c3552f D |
4480 | return; |
4481 | ||
a7f6e231 D |
4482 | /* Wake up the media well, as that takes a lot less |
4483 | * power than the Render well. */ | |
4484 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_MEDIA); | |
4485 | valleyview_set_rps(dev_priv->dev, val); | |
4486 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_MEDIA); | |
76c3552f D |
4487 | } |
4488 | ||
43cf3bf0 CW |
4489 | void gen6_rps_busy(struct drm_i915_private *dev_priv) |
4490 | { | |
4491 | mutex_lock(&dev_priv->rps.hw_lock); | |
4492 | if (dev_priv->rps.enabled) { | |
4493 | if (dev_priv->pm_rps_events & (GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED)) | |
4494 | gen6_rps_reset_ei(dev_priv); | |
4495 | I915_WRITE(GEN6_PMINTRMSK, | |
4496 | gen6_rps_pm_mask(dev_priv, dev_priv->rps.cur_freq)); | |
4497 | } | |
4498 | mutex_unlock(&dev_priv->rps.hw_lock); | |
4499 | } | |
4500 | ||
b29c19b6 CW |
4501 | void gen6_rps_idle(struct drm_i915_private *dev_priv) |
4502 | { | |
691bb717 DL |
4503 | struct drm_device *dev = dev_priv->dev; |
4504 | ||
b29c19b6 | 4505 | mutex_lock(&dev_priv->rps.hw_lock); |
c0951f0c | 4506 | if (dev_priv->rps.enabled) { |
666a4537 | 4507 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) |
76c3552f | 4508 | vlv_set_rps_idle(dev_priv); |
7526ed79 | 4509 | else |
aed242ff | 4510 | gen6_set_rps(dev_priv->dev, dev_priv->rps.idle_freq); |
c0951f0c | 4511 | dev_priv->rps.last_adj = 0; |
43cf3bf0 | 4512 | I915_WRITE(GEN6_PMINTRMSK, 0xffffffff); |
c0951f0c | 4513 | } |
8d3afd7d | 4514 | mutex_unlock(&dev_priv->rps.hw_lock); |
1854d5ca | 4515 | |
8d3afd7d | 4516 | spin_lock(&dev_priv->rps.client_lock); |
1854d5ca CW |
4517 | while (!list_empty(&dev_priv->rps.clients)) |
4518 | list_del_init(dev_priv->rps.clients.next); | |
8d3afd7d | 4519 | spin_unlock(&dev_priv->rps.client_lock); |
b29c19b6 CW |
4520 | } |
4521 | ||
1854d5ca | 4522 | void gen6_rps_boost(struct drm_i915_private *dev_priv, |
e61b9958 CW |
4523 | struct intel_rps_client *rps, |
4524 | unsigned long submitted) | |
b29c19b6 | 4525 | { |
8d3afd7d CW |
4526 | /* This is intentionally racy! We peek at the state here, then |
4527 | * validate inside the RPS worker. | |
4528 | */ | |
4529 | if (!(dev_priv->mm.busy && | |
4530 | dev_priv->rps.enabled && | |
4531 | dev_priv->rps.cur_freq < dev_priv->rps.max_freq_softlimit)) | |
4532 | return; | |
43cf3bf0 | 4533 | |
e61b9958 CW |
4534 | /* Force a RPS boost (and don't count it against the client) if |
4535 | * the GPU is severely congested. | |
4536 | */ | |
d0bc54f2 | 4537 | if (rps && time_after(jiffies, submitted + DRM_I915_THROTTLE_JIFFIES)) |
e61b9958 CW |
4538 | rps = NULL; |
4539 | ||
8d3afd7d CW |
4540 | spin_lock(&dev_priv->rps.client_lock); |
4541 | if (rps == NULL || list_empty(&rps->link)) { | |
4542 | spin_lock_irq(&dev_priv->irq_lock); | |
4543 | if (dev_priv->rps.interrupts_enabled) { | |
4544 | dev_priv->rps.client_boost = true; | |
4545 | queue_work(dev_priv->wq, &dev_priv->rps.work); | |
4546 | } | |
4547 | spin_unlock_irq(&dev_priv->irq_lock); | |
1854d5ca | 4548 | |
2e1b8730 CW |
4549 | if (rps != NULL) { |
4550 | list_add(&rps->link, &dev_priv->rps.clients); | |
4551 | rps->boosts++; | |
1854d5ca CW |
4552 | } else |
4553 | dev_priv->rps.boosts++; | |
c0951f0c | 4554 | } |
8d3afd7d | 4555 | spin_unlock(&dev_priv->rps.client_lock); |
b29c19b6 CW |
4556 | } |
4557 | ||
ffe02b40 | 4558 | void intel_set_rps(struct drm_device *dev, u8 val) |
0a073b84 | 4559 | { |
666a4537 | 4560 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) |
ffe02b40 VS |
4561 | valleyview_set_rps(dev, val); |
4562 | else | |
4563 | gen6_set_rps(dev, val); | |
0a073b84 JB |
4564 | } |
4565 | ||
20e49366 ZW |
4566 | static void gen9_disable_rps(struct drm_device *dev) |
4567 | { | |
4568 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4569 | ||
4570 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
38c23527 | 4571 | I915_WRITE(GEN9_PG_ENABLE, 0); |
20e49366 ZW |
4572 | } |
4573 | ||
44fc7d5c | 4574 | static void gen6_disable_rps(struct drm_device *dev) |
d20d4f0c JB |
4575 | { |
4576 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4577 | ||
4578 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
44fc7d5c | 4579 | I915_WRITE(GEN6_RPNSWREQ, 1 << 31); |
44fc7d5c DV |
4580 | } |
4581 | ||
38807746 D |
4582 | static void cherryview_disable_rps(struct drm_device *dev) |
4583 | { | |
4584 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4585 | ||
4586 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
4587 | } | |
4588 | ||
44fc7d5c DV |
4589 | static void valleyview_disable_rps(struct drm_device *dev) |
4590 | { | |
4591 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4592 | ||
98a2e5f9 D |
4593 | /* we're doing forcewake before Disabling RC6, |
4594 | * This what the BIOS expects when going into suspend */ | |
59bad947 | 4595 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
98a2e5f9 | 4596 | |
44fc7d5c | 4597 | I915_WRITE(GEN6_RC_CONTROL, 0); |
d20d4f0c | 4598 | |
59bad947 | 4599 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
d20d4f0c JB |
4600 | } |
4601 | ||
dc39fff7 BW |
4602 | static void intel_print_rc6_info(struct drm_device *dev, u32 mode) |
4603 | { | |
666a4537 | 4604 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { |
91ca689a ID |
4605 | if (mode & (GEN7_RC_CTL_TO_MODE | GEN6_RC_CTL_EI_MODE(1))) |
4606 | mode = GEN6_RC_CTL_RC6_ENABLE; | |
4607 | else | |
4608 | mode = 0; | |
4609 | } | |
58abf1da RV |
4610 | if (HAS_RC6p(dev)) |
4611 | DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s RC6p %s RC6pp %s\n", | |
87ad3212 JN |
4612 | onoff(mode & GEN6_RC_CTL_RC6_ENABLE), |
4613 | onoff(mode & GEN6_RC_CTL_RC6p_ENABLE), | |
4614 | onoff(mode & GEN6_RC_CTL_RC6pp_ENABLE)); | |
58abf1da RV |
4615 | |
4616 | else | |
4617 | DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s\n", | |
87ad3212 | 4618 | onoff(mode & GEN6_RC_CTL_RC6_ENABLE)); |
dc39fff7 BW |
4619 | } |
4620 | ||
274008e8 SAK |
4621 | static bool bxt_check_bios_rc6_setup(const struct drm_device *dev) |
4622 | { | |
4623 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4624 | bool enable_rc6 = true; | |
4625 | unsigned long rc6_ctx_base; | |
4626 | ||
4627 | if (!(I915_READ(RC6_LOCATION) & RC6_CTX_IN_DRAM)) { | |
4628 | DRM_DEBUG_KMS("RC6 Base location not set properly.\n"); | |
4629 | enable_rc6 = false; | |
4630 | } | |
4631 | ||
4632 | /* | |
4633 | * The exact context size is not known for BXT, so assume a page size | |
4634 | * for this check. | |
4635 | */ | |
4636 | rc6_ctx_base = I915_READ(RC6_CTX_BASE) & RC6_CTX_BASE_MASK; | |
4637 | if (!((rc6_ctx_base >= dev_priv->gtt.stolen_reserved_base) && | |
4638 | (rc6_ctx_base + PAGE_SIZE <= dev_priv->gtt.stolen_reserved_base + | |
4639 | dev_priv->gtt.stolen_reserved_size))) { | |
4640 | DRM_DEBUG_KMS("RC6 Base address not as expected.\n"); | |
4641 | enable_rc6 = false; | |
4642 | } | |
4643 | ||
4644 | if (!(((I915_READ(PWRCTX_MAXCNT_RCSUNIT) & IDLE_TIME_MASK) > 1) && | |
4645 | ((I915_READ(PWRCTX_MAXCNT_VCSUNIT0) & IDLE_TIME_MASK) > 1) && | |
4646 | ((I915_READ(PWRCTX_MAXCNT_BCSUNIT) & IDLE_TIME_MASK) > 1) && | |
4647 | ((I915_READ(PWRCTX_MAXCNT_VECSUNIT) & IDLE_TIME_MASK) > 1))) { | |
4648 | DRM_DEBUG_KMS("Engine Idle wait time not set properly.\n"); | |
4649 | enable_rc6 = false; | |
4650 | } | |
4651 | ||
4652 | if (!(I915_READ(GEN6_RC_CONTROL) & (GEN6_RC_CTL_RC6_ENABLE | | |
4653 | GEN6_RC_CTL_HW_ENABLE)) && | |
4654 | ((I915_READ(GEN6_RC_CONTROL) & GEN6_RC_CTL_HW_ENABLE) || | |
4655 | !(I915_READ(GEN6_RC_STATE) & RC6_STATE))) { | |
4656 | DRM_DEBUG_KMS("HW/SW RC6 is not enabled by BIOS.\n"); | |
4657 | enable_rc6 = false; | |
4658 | } | |
4659 | ||
4660 | return enable_rc6; | |
4661 | } | |
4662 | ||
4663 | int sanitize_rc6_option(const struct drm_device *dev, int enable_rc6) | |
2b4e57bd | 4664 | { |
e7d66d89 DV |
4665 | /* No RC6 before Ironlake and code is gone for ilk. */ |
4666 | if (INTEL_INFO(dev)->gen < 6) | |
e6069ca8 ID |
4667 | return 0; |
4668 | ||
274008e8 SAK |
4669 | if (!enable_rc6) |
4670 | return 0; | |
4671 | ||
4672 | if (IS_BROXTON(dev) && !bxt_check_bios_rc6_setup(dev)) { | |
4673 | DRM_INFO("RC6 disabled by BIOS\n"); | |
4674 | return 0; | |
4675 | } | |
4676 | ||
456470eb | 4677 | /* Respect the kernel parameter if it is set */ |
e6069ca8 ID |
4678 | if (enable_rc6 >= 0) { |
4679 | int mask; | |
4680 | ||
58abf1da | 4681 | if (HAS_RC6p(dev)) |
e6069ca8 ID |
4682 | mask = INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE | |
4683 | INTEL_RC6pp_ENABLE; | |
4684 | else | |
4685 | mask = INTEL_RC6_ENABLE; | |
4686 | ||
4687 | if ((enable_rc6 & mask) != enable_rc6) | |
8dfd1f04 DV |
4688 | DRM_DEBUG_KMS("Adjusting RC6 mask to %d (requested %d, valid %d)\n", |
4689 | enable_rc6 & mask, enable_rc6, mask); | |
e6069ca8 ID |
4690 | |
4691 | return enable_rc6 & mask; | |
4692 | } | |
2b4e57bd | 4693 | |
8bade1ad | 4694 | if (IS_IVYBRIDGE(dev)) |
cca84a1f | 4695 | return (INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE); |
8bade1ad BW |
4696 | |
4697 | return INTEL_RC6_ENABLE; | |
2b4e57bd ED |
4698 | } |
4699 | ||
e6069ca8 ID |
4700 | int intel_enable_rc6(const struct drm_device *dev) |
4701 | { | |
4702 | return i915.enable_rc6; | |
4703 | } | |
4704 | ||
93ee2920 | 4705 | static void gen6_init_rps_frequencies(struct drm_device *dev) |
3280e8b0 | 4706 | { |
93ee2920 TR |
4707 | struct drm_i915_private *dev_priv = dev->dev_private; |
4708 | uint32_t rp_state_cap; | |
4709 | u32 ddcc_status = 0; | |
4710 | int ret; | |
4711 | ||
3280e8b0 BW |
4712 | /* All of these values are in units of 50MHz */ |
4713 | dev_priv->rps.cur_freq = 0; | |
93ee2920 | 4714 | /* static values from HW: RP0 > RP1 > RPn (min_freq) */ |
35040562 BP |
4715 | if (IS_BROXTON(dev)) { |
4716 | rp_state_cap = I915_READ(BXT_RP_STATE_CAP); | |
4717 | dev_priv->rps.rp0_freq = (rp_state_cap >> 16) & 0xff; | |
4718 | dev_priv->rps.rp1_freq = (rp_state_cap >> 8) & 0xff; | |
4719 | dev_priv->rps.min_freq = (rp_state_cap >> 0) & 0xff; | |
4720 | } else { | |
4721 | rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); | |
4722 | dev_priv->rps.rp0_freq = (rp_state_cap >> 0) & 0xff; | |
4723 | dev_priv->rps.rp1_freq = (rp_state_cap >> 8) & 0xff; | |
4724 | dev_priv->rps.min_freq = (rp_state_cap >> 16) & 0xff; | |
4725 | } | |
4726 | ||
3280e8b0 BW |
4727 | /* hw_max = RP0 until we check for overclocking */ |
4728 | dev_priv->rps.max_freq = dev_priv->rps.rp0_freq; | |
4729 | ||
93ee2920 | 4730 | dev_priv->rps.efficient_freq = dev_priv->rps.rp1_freq; |
ef11bdb3 RV |
4731 | if (IS_HASWELL(dev) || IS_BROADWELL(dev) || |
4732 | IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) { | |
93ee2920 TR |
4733 | ret = sandybridge_pcode_read(dev_priv, |
4734 | HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL, | |
4735 | &ddcc_status); | |
4736 | if (0 == ret) | |
4737 | dev_priv->rps.efficient_freq = | |
46efa4ab TR |
4738 | clamp_t(u8, |
4739 | ((ddcc_status >> 8) & 0xff), | |
4740 | dev_priv->rps.min_freq, | |
4741 | dev_priv->rps.max_freq); | |
93ee2920 TR |
4742 | } |
4743 | ||
ef11bdb3 | 4744 | if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) { |
c5e0688c AG |
4745 | /* Store the frequency values in 16.66 MHZ units, which is |
4746 | the natural hardware unit for SKL */ | |
4747 | dev_priv->rps.rp0_freq *= GEN9_FREQ_SCALER; | |
4748 | dev_priv->rps.rp1_freq *= GEN9_FREQ_SCALER; | |
4749 | dev_priv->rps.min_freq *= GEN9_FREQ_SCALER; | |
4750 | dev_priv->rps.max_freq *= GEN9_FREQ_SCALER; | |
4751 | dev_priv->rps.efficient_freq *= GEN9_FREQ_SCALER; | |
4752 | } | |
4753 | ||
aed242ff CW |
4754 | dev_priv->rps.idle_freq = dev_priv->rps.min_freq; |
4755 | ||
3280e8b0 BW |
4756 | /* Preserve min/max settings in case of re-init */ |
4757 | if (dev_priv->rps.max_freq_softlimit == 0) | |
4758 | dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; | |
4759 | ||
93ee2920 TR |
4760 | if (dev_priv->rps.min_freq_softlimit == 0) { |
4761 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
4762 | dev_priv->rps.min_freq_softlimit = | |
813b5e69 VS |
4763 | max_t(int, dev_priv->rps.efficient_freq, |
4764 | intel_freq_opcode(dev_priv, 450)); | |
93ee2920 TR |
4765 | else |
4766 | dev_priv->rps.min_freq_softlimit = | |
4767 | dev_priv->rps.min_freq; | |
4768 | } | |
3280e8b0 BW |
4769 | } |
4770 | ||
b6fef0ef | 4771 | /* See the Gen9_GT_PM_Programming_Guide doc for the below */ |
20e49366 | 4772 | static void gen9_enable_rps(struct drm_device *dev) |
b6fef0ef JB |
4773 | { |
4774 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4775 | ||
4776 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); | |
4777 | ||
ba1c554c DL |
4778 | gen6_init_rps_frequencies(dev); |
4779 | ||
23eafea6 | 4780 | /* WaGsvDisableTurbo: Workaround to disable turbo on BXT A* */ |
e87a005d | 4781 | if (IS_BXT_REVID(dev, 0, BXT_REVID_A1)) { |
23eafea6 SAK |
4782 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
4783 | return; | |
4784 | } | |
4785 | ||
0beb059a AG |
4786 | /* Program defaults and thresholds for RPS*/ |
4787 | I915_WRITE(GEN6_RC_VIDEO_FREQ, | |
4788 | GEN9_FREQUENCY(dev_priv->rps.rp1_freq)); | |
4789 | ||
4790 | /* 1 second timeout*/ | |
4791 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, | |
4792 | GT_INTERVAL_FROM_US(dev_priv, 1000000)); | |
4793 | ||
b6fef0ef | 4794 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 0xa); |
b6fef0ef | 4795 | |
0beb059a AG |
4796 | /* Leaning on the below call to gen6_set_rps to program/setup the |
4797 | * Up/Down EI & threshold registers, as well as the RP_CONTROL, | |
4798 | * RP_INTERRUPT_LIMITS & RPNSWREQ registers */ | |
4799 | dev_priv->rps.power = HIGH_POWER; /* force a reset */ | |
4800 | gen6_set_rps(dev_priv->dev, dev_priv->rps.min_freq_softlimit); | |
b6fef0ef JB |
4801 | |
4802 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); | |
4803 | } | |
4804 | ||
4805 | static void gen9_enable_rc6(struct drm_device *dev) | |
20e49366 ZW |
4806 | { |
4807 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4808 | struct intel_engine_cs *ring; | |
4809 | uint32_t rc6_mask = 0; | |
4810 | int unused; | |
4811 | ||
4812 | /* 1a: Software RC state - RC0 */ | |
4813 | I915_WRITE(GEN6_RC_STATE, 0); | |
4814 | ||
4815 | /* 1b: Get forcewake during program sequence. Although the driver | |
4816 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 4817 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
20e49366 ZW |
4818 | |
4819 | /* 2a: Disable RC states. */ | |
4820 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
4821 | ||
4822 | /* 2b: Program RC6 thresholds.*/ | |
63a4dec2 SAK |
4823 | |
4824 | /* WaRsDoubleRc6WrlWithCoarsePowerGating: Doubling WRL only when CPG is enabled */ | |
e7674b8c | 4825 | if (IS_SKYLAKE(dev)) |
63a4dec2 SAK |
4826 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 108 << 16); |
4827 | else | |
4828 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16); | |
20e49366 ZW |
4829 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ |
4830 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
4831 | for_each_ring(ring, dev_priv, unused) | |
4832 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
97c322e7 SAK |
4833 | |
4834 | if (HAS_GUC_UCODE(dev)) | |
4835 | I915_WRITE(GUC_MAX_IDLE_COUNT, 0xA); | |
4836 | ||
20e49366 | 4837 | I915_WRITE(GEN6_RC_SLEEP, 0); |
20e49366 | 4838 | |
38c23527 ZW |
4839 | /* 2c: Program Coarse Power Gating Policies. */ |
4840 | I915_WRITE(GEN9_MEDIA_PG_IDLE_HYSTERESIS, 25); | |
4841 | I915_WRITE(GEN9_RENDER_PG_IDLE_HYSTERESIS, 25); | |
4842 | ||
20e49366 ZW |
4843 | /* 3a: Enable RC6 */ |
4844 | if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE) | |
4845 | rc6_mask = GEN6_RC_CTL_RC6_ENABLE; | |
87ad3212 | 4846 | DRM_INFO("RC6 %s\n", onoff(rc6_mask & GEN6_RC_CTL_RC6_ENABLE)); |
3e7732a0 | 4847 | /* WaRsUseTimeoutMode */ |
e87a005d | 4848 | if (IS_SKL_REVID(dev, 0, SKL_REVID_D0) || |
cbdc12a9 | 4849 | IS_BXT_REVID(dev, 0, BXT_REVID_A1)) { |
3e7732a0 | 4850 | I915_WRITE(GEN6_RC6_THRESHOLD, 625); /* 800us */ |
e3429cd2 SAK |
4851 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | |
4852 | GEN7_RC_CTL_TO_MODE | | |
4853 | rc6_mask); | |
3e7732a0 SAK |
4854 | } else { |
4855 | I915_WRITE(GEN6_RC6_THRESHOLD, 37500); /* 37.5/125ms per EI */ | |
e3429cd2 SAK |
4856 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | |
4857 | GEN6_RC_CTL_EI_MODE(1) | | |
4858 | rc6_mask); | |
3e7732a0 | 4859 | } |
20e49366 | 4860 | |
cb07bae0 SK |
4861 | /* |
4862 | * 3b: Enable Coarse Power Gating only when RC6 is enabled. | |
f2d2fe95 | 4863 | * WaRsDisableCoarsePowerGating:skl,bxt - Render/Media PG need to be disabled with RC6. |
cb07bae0 | 4864 | */ |
06e668ac | 4865 | if (NEEDS_WaRsDisableCoarsePowerGating(dev)) |
f2d2fe95 SAK |
4866 | I915_WRITE(GEN9_PG_ENABLE, 0); |
4867 | else | |
4868 | I915_WRITE(GEN9_PG_ENABLE, (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ? | |
4869 | (GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE) : 0); | |
38c23527 | 4870 | |
59bad947 | 4871 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
20e49366 ZW |
4872 | |
4873 | } | |
4874 | ||
6edee7f3 BW |
4875 | static void gen8_enable_rps(struct drm_device *dev) |
4876 | { | |
4877 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4872ba6 | 4878 | struct intel_engine_cs *ring; |
93ee2920 | 4879 | uint32_t rc6_mask = 0; |
6edee7f3 BW |
4880 | int unused; |
4881 | ||
4882 | /* 1a: Software RC state - RC0 */ | |
4883 | I915_WRITE(GEN6_RC_STATE, 0); | |
4884 | ||
4885 | /* 1c & 1d: Get forcewake during program sequence. Although the driver | |
4886 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 4887 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
6edee7f3 BW |
4888 | |
4889 | /* 2a: Disable RC states. */ | |
4890 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
4891 | ||
93ee2920 TR |
4892 | /* Initialize rps frequencies */ |
4893 | gen6_init_rps_frequencies(dev); | |
6edee7f3 BW |
4894 | |
4895 | /* 2b: Program RC6 thresholds.*/ | |
4896 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16); | |
4897 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ | |
4898 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
4899 | for_each_ring(ring, dev_priv, unused) | |
4900 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
4901 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
0d68b25e TR |
4902 | if (IS_BROADWELL(dev)) |
4903 | I915_WRITE(GEN6_RC6_THRESHOLD, 625); /* 800us/1.28 for TO */ | |
4904 | else | |
4905 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); /* 50/125ms per EI */ | |
6edee7f3 BW |
4906 | |
4907 | /* 3: Enable RC6 */ | |
4908 | if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE) | |
4909 | rc6_mask = GEN6_RC_CTL_RC6_ENABLE; | |
abbf9d2c | 4910 | intel_print_rc6_info(dev, rc6_mask); |
0d68b25e TR |
4911 | if (IS_BROADWELL(dev)) |
4912 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | | |
4913 | GEN7_RC_CTL_TO_MODE | | |
4914 | rc6_mask); | |
4915 | else | |
4916 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | | |
4917 | GEN6_RC_CTL_EI_MODE(1) | | |
4918 | rc6_mask); | |
6edee7f3 BW |
4919 | |
4920 | /* 4 Program defaults and thresholds for RPS*/ | |
f9bdc585 BW |
4921 | I915_WRITE(GEN6_RPNSWREQ, |
4922 | HSW_FREQUENCY(dev_priv->rps.rp1_freq)); | |
4923 | I915_WRITE(GEN6_RC_VIDEO_FREQ, | |
4924 | HSW_FREQUENCY(dev_priv->rps.rp1_freq)); | |
7526ed79 DV |
4925 | /* NB: Docs say 1s, and 1000000 - which aren't equivalent */ |
4926 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 100000000 / 128); /* 1 second timeout */ | |
4927 | ||
4928 | /* Docs recommend 900MHz, and 300 MHz respectively */ | |
4929 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, | |
4930 | dev_priv->rps.max_freq_softlimit << 24 | | |
4931 | dev_priv->rps.min_freq_softlimit << 16); | |
4932 | ||
4933 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 7600000 / 128); /* 76ms busyness per EI, 90% */ | |
4934 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 31300000 / 128); /* 313ms busyness per EI, 70%*/ | |
4935 | I915_WRITE(GEN6_RP_UP_EI, 66000); /* 84.48ms, XXX: random? */ | |
4936 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); /* 448ms, XXX: random? */ | |
4937 | ||
4938 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
6edee7f3 BW |
4939 | |
4940 | /* 5: Enable RPS */ | |
7526ed79 DV |
4941 | I915_WRITE(GEN6_RP_CONTROL, |
4942 | GEN6_RP_MEDIA_TURBO | | |
4943 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
4944 | GEN6_RP_MEDIA_IS_GFX | | |
4945 | GEN6_RP_ENABLE | | |
4946 | GEN6_RP_UP_BUSY_AVG | | |
4947 | GEN6_RP_DOWN_IDLE_AVG); | |
4948 | ||
4949 | /* 6: Ring frequency + overclocking (our driver does this later */ | |
4950 | ||
c7f3153a | 4951 | dev_priv->rps.power = HIGH_POWER; /* force a reset */ |
aed242ff | 4952 | gen6_set_rps(dev_priv->dev, dev_priv->rps.idle_freq); |
7526ed79 | 4953 | |
59bad947 | 4954 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
6edee7f3 BW |
4955 | } |
4956 | ||
79f5b2c7 | 4957 | static void gen6_enable_rps(struct drm_device *dev) |
2b4e57bd | 4958 | { |
79f5b2c7 | 4959 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4872ba6 | 4960 | struct intel_engine_cs *ring; |
d060c169 | 4961 | u32 rc6vids, pcu_mbox = 0, rc6_mask = 0; |
2b4e57bd | 4962 | u32 gtfifodbg; |
2b4e57bd | 4963 | int rc6_mode; |
42c0526c | 4964 | int i, ret; |
2b4e57bd | 4965 | |
4fc688ce | 4966 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 4967 | |
2b4e57bd ED |
4968 | /* Here begins a magic sequence of register writes to enable |
4969 | * auto-downclocking. | |
4970 | * | |
4971 | * Perhaps there might be some value in exposing these to | |
4972 | * userspace... | |
4973 | */ | |
4974 | I915_WRITE(GEN6_RC_STATE, 0); | |
2b4e57bd ED |
4975 | |
4976 | /* Clear the DBG now so we don't confuse earlier errors */ | |
4977 | if ((gtfifodbg = I915_READ(GTFIFODBG))) { | |
4978 | DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg); | |
4979 | I915_WRITE(GTFIFODBG, gtfifodbg); | |
4980 | } | |
4981 | ||
59bad947 | 4982 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
2b4e57bd | 4983 | |
93ee2920 TR |
4984 | /* Initialize rps frequencies */ |
4985 | gen6_init_rps_frequencies(dev); | |
dd0a1aa1 | 4986 | |
2b4e57bd ED |
4987 | /* disable the counters and set deterministic thresholds */ |
4988 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
4989 | ||
4990 | I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16); | |
4991 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30); | |
4992 | I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30); | |
4993 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
4994 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
4995 | ||
b4519513 CW |
4996 | for_each_ring(ring, dev_priv, i) |
4997 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
2b4e57bd ED |
4998 | |
4999 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
5000 | I915_WRITE(GEN6_RC1e_THRESHOLD, 1000); | |
29c78f60 | 5001 | if (IS_IVYBRIDGE(dev)) |
351aa566 SM |
5002 | I915_WRITE(GEN6_RC6_THRESHOLD, 125000); |
5003 | else | |
5004 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); | |
0920a487 | 5005 | I915_WRITE(GEN6_RC6p_THRESHOLD, 150000); |
2b4e57bd ED |
5006 | I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */ |
5007 | ||
5a7dc92a | 5008 | /* Check if we are enabling RC6 */ |
2b4e57bd ED |
5009 | rc6_mode = intel_enable_rc6(dev_priv->dev); |
5010 | if (rc6_mode & INTEL_RC6_ENABLE) | |
5011 | rc6_mask |= GEN6_RC_CTL_RC6_ENABLE; | |
5012 | ||
5a7dc92a ED |
5013 | /* We don't use those on Haswell */ |
5014 | if (!IS_HASWELL(dev)) { | |
5015 | if (rc6_mode & INTEL_RC6p_ENABLE) | |
5016 | rc6_mask |= GEN6_RC_CTL_RC6p_ENABLE; | |
2b4e57bd | 5017 | |
5a7dc92a ED |
5018 | if (rc6_mode & INTEL_RC6pp_ENABLE) |
5019 | rc6_mask |= GEN6_RC_CTL_RC6pp_ENABLE; | |
5020 | } | |
2b4e57bd | 5021 | |
dc39fff7 | 5022 | intel_print_rc6_info(dev, rc6_mask); |
2b4e57bd ED |
5023 | |
5024 | I915_WRITE(GEN6_RC_CONTROL, | |
5025 | rc6_mask | | |
5026 | GEN6_RC_CTL_EI_MODE(1) | | |
5027 | GEN6_RC_CTL_HW_ENABLE); | |
5028 | ||
dd75fdc8 CW |
5029 | /* Power down if completely idle for over 50ms */ |
5030 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 50000); | |
2b4e57bd | 5031 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); |
2b4e57bd | 5032 | |
42c0526c | 5033 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_MIN_FREQ_TABLE, 0); |
d060c169 | 5034 | if (ret) |
42c0526c | 5035 | DRM_DEBUG_DRIVER("Failed to set the min frequency\n"); |
d060c169 BW |
5036 | |
5037 | ret = sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS, &pcu_mbox); | |
5038 | if (!ret && (pcu_mbox & (1<<31))) { /* OC supported */ | |
5039 | DRM_DEBUG_DRIVER("Overclocking supported. Max: %dMHz, Overclock max: %dMHz\n", | |
b39fb297 | 5040 | (dev_priv->rps.max_freq_softlimit & 0xff) * 50, |
d060c169 | 5041 | (pcu_mbox & 0xff) * 50); |
b39fb297 | 5042 | dev_priv->rps.max_freq = pcu_mbox & 0xff; |
2b4e57bd ED |
5043 | } |
5044 | ||
dd75fdc8 | 5045 | dev_priv->rps.power = HIGH_POWER; /* force a reset */ |
aed242ff | 5046 | gen6_set_rps(dev_priv->dev, dev_priv->rps.idle_freq); |
2b4e57bd | 5047 | |
31643d54 BW |
5048 | rc6vids = 0; |
5049 | ret = sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids); | |
5050 | if (IS_GEN6(dev) && ret) { | |
5051 | DRM_DEBUG_DRIVER("Couldn't check for BIOS workaround\n"); | |
5052 | } else if (IS_GEN6(dev) && (GEN6_DECODE_RC6_VID(rc6vids & 0xff) < 450)) { | |
5053 | DRM_DEBUG_DRIVER("You should update your BIOS. Correcting minimum rc6 voltage (%dmV->%dmV)\n", | |
5054 | GEN6_DECODE_RC6_VID(rc6vids & 0xff), 450); | |
5055 | rc6vids &= 0xffff00; | |
5056 | rc6vids |= GEN6_ENCODE_RC6_VID(450); | |
5057 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_RC6VIDS, rc6vids); | |
5058 | if (ret) | |
5059 | DRM_ERROR("Couldn't fix incorrect rc6 voltage\n"); | |
5060 | } | |
5061 | ||
59bad947 | 5062 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
2b4e57bd ED |
5063 | } |
5064 | ||
c2bc2fc5 | 5065 | static void __gen6_update_ring_freq(struct drm_device *dev) |
2b4e57bd | 5066 | { |
79f5b2c7 | 5067 | struct drm_i915_private *dev_priv = dev->dev_private; |
2b4e57bd | 5068 | int min_freq = 15; |
3ebecd07 CW |
5069 | unsigned int gpu_freq; |
5070 | unsigned int max_ia_freq, min_ring_freq; | |
4c8c7743 | 5071 | unsigned int max_gpu_freq, min_gpu_freq; |
2b4e57bd | 5072 | int scaling_factor = 180; |
eda79642 | 5073 | struct cpufreq_policy *policy; |
2b4e57bd | 5074 | |
4fc688ce | 5075 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 5076 | |
eda79642 BW |
5077 | policy = cpufreq_cpu_get(0); |
5078 | if (policy) { | |
5079 | max_ia_freq = policy->cpuinfo.max_freq; | |
5080 | cpufreq_cpu_put(policy); | |
5081 | } else { | |
5082 | /* | |
5083 | * Default to measured freq if none found, PCU will ensure we | |
5084 | * don't go over | |
5085 | */ | |
2b4e57bd | 5086 | max_ia_freq = tsc_khz; |
eda79642 | 5087 | } |
2b4e57bd ED |
5088 | |
5089 | /* Convert from kHz to MHz */ | |
5090 | max_ia_freq /= 1000; | |
5091 | ||
153b4b95 | 5092 | min_ring_freq = I915_READ(DCLK) & 0xf; |
f6aca45c BW |
5093 | /* convert DDR frequency from units of 266.6MHz to bandwidth */ |
5094 | min_ring_freq = mult_frac(min_ring_freq, 8, 3); | |
3ebecd07 | 5095 | |
ef11bdb3 | 5096 | if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) { |
4c8c7743 AG |
5097 | /* Convert GT frequency to 50 HZ units */ |
5098 | min_gpu_freq = dev_priv->rps.min_freq / GEN9_FREQ_SCALER; | |
5099 | max_gpu_freq = dev_priv->rps.max_freq / GEN9_FREQ_SCALER; | |
5100 | } else { | |
5101 | min_gpu_freq = dev_priv->rps.min_freq; | |
5102 | max_gpu_freq = dev_priv->rps.max_freq; | |
5103 | } | |
5104 | ||
2b4e57bd ED |
5105 | /* |
5106 | * For each potential GPU frequency, load a ring frequency we'd like | |
5107 | * to use for memory access. We do this by specifying the IA frequency | |
5108 | * the PCU should use as a reference to determine the ring frequency. | |
5109 | */ | |
4c8c7743 AG |
5110 | for (gpu_freq = max_gpu_freq; gpu_freq >= min_gpu_freq; gpu_freq--) { |
5111 | int diff = max_gpu_freq - gpu_freq; | |
3ebecd07 CW |
5112 | unsigned int ia_freq = 0, ring_freq = 0; |
5113 | ||
ef11bdb3 | 5114 | if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) { |
4c8c7743 AG |
5115 | /* |
5116 | * ring_freq = 2 * GT. ring_freq is in 100MHz units | |
5117 | * No floor required for ring frequency on SKL. | |
5118 | */ | |
5119 | ring_freq = gpu_freq; | |
5120 | } else if (INTEL_INFO(dev)->gen >= 8) { | |
46c764d4 BW |
5121 | /* max(2 * GT, DDR). NB: GT is 50MHz units */ |
5122 | ring_freq = max(min_ring_freq, gpu_freq); | |
5123 | } else if (IS_HASWELL(dev)) { | |
f6aca45c | 5124 | ring_freq = mult_frac(gpu_freq, 5, 4); |
3ebecd07 CW |
5125 | ring_freq = max(min_ring_freq, ring_freq); |
5126 | /* leave ia_freq as the default, chosen by cpufreq */ | |
5127 | } else { | |
5128 | /* On older processors, there is no separate ring | |
5129 | * clock domain, so in order to boost the bandwidth | |
5130 | * of the ring, we need to upclock the CPU (ia_freq). | |
5131 | * | |
5132 | * For GPU frequencies less than 750MHz, | |
5133 | * just use the lowest ring freq. | |
5134 | */ | |
5135 | if (gpu_freq < min_freq) | |
5136 | ia_freq = 800; | |
5137 | else | |
5138 | ia_freq = max_ia_freq - ((diff * scaling_factor) / 2); | |
5139 | ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100); | |
5140 | } | |
2b4e57bd | 5141 | |
42c0526c BW |
5142 | sandybridge_pcode_write(dev_priv, |
5143 | GEN6_PCODE_WRITE_MIN_FREQ_TABLE, | |
3ebecd07 CW |
5144 | ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT | |
5145 | ring_freq << GEN6_PCODE_FREQ_RING_RATIO_SHIFT | | |
5146 | gpu_freq); | |
2b4e57bd | 5147 | } |
2b4e57bd ED |
5148 | } |
5149 | ||
c2bc2fc5 ID |
5150 | void gen6_update_ring_freq(struct drm_device *dev) |
5151 | { | |
5152 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5153 | ||
97d3308a | 5154 | if (!HAS_CORE_RING_FREQ(dev)) |
c2bc2fc5 ID |
5155 | return; |
5156 | ||
5157 | mutex_lock(&dev_priv->rps.hw_lock); | |
5158 | __gen6_update_ring_freq(dev); | |
5159 | mutex_unlock(&dev_priv->rps.hw_lock); | |
5160 | } | |
5161 | ||
03af2045 | 5162 | static int cherryview_rps_max_freq(struct drm_i915_private *dev_priv) |
2b6b3a09 | 5163 | { |
095acd5f | 5164 | struct drm_device *dev = dev_priv->dev; |
2b6b3a09 D |
5165 | u32 val, rp0; |
5166 | ||
5b5929cb | 5167 | val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE); |
2b6b3a09 | 5168 | |
5b5929cb JN |
5169 | switch (INTEL_INFO(dev)->eu_total) { |
5170 | case 8: | |
5171 | /* (2 * 4) config */ | |
5172 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS4EU_FUSE_SHIFT); | |
5173 | break; | |
5174 | case 12: | |
5175 | /* (2 * 6) config */ | |
5176 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS6EU_FUSE_SHIFT); | |
5177 | break; | |
5178 | case 16: | |
5179 | /* (2 * 8) config */ | |
5180 | default: | |
5181 | /* Setting (2 * 8) Min RP0 for any other combination */ | |
5182 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS8EU_FUSE_SHIFT); | |
5183 | break; | |
095acd5f | 5184 | } |
5b5929cb JN |
5185 | |
5186 | rp0 = (rp0 & FB_GFX_FREQ_FUSE_MASK); | |
5187 | ||
2b6b3a09 D |
5188 | return rp0; |
5189 | } | |
5190 | ||
5191 | static int cherryview_rps_rpe_freq(struct drm_i915_private *dev_priv) | |
5192 | { | |
5193 | u32 val, rpe; | |
5194 | ||
5195 | val = vlv_punit_read(dev_priv, PUNIT_GPU_DUTYCYCLE_REG); | |
5196 | rpe = (val >> PUNIT_GPU_DUTYCYCLE_RPE_FREQ_SHIFT) & PUNIT_GPU_DUTYCYCLE_RPE_FREQ_MASK; | |
5197 | ||
5198 | return rpe; | |
5199 | } | |
5200 | ||
7707df4a D |
5201 | static int cherryview_rps_guar_freq(struct drm_i915_private *dev_priv) |
5202 | { | |
5203 | u32 val, rp1; | |
5204 | ||
5b5929cb JN |
5205 | val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE); |
5206 | rp1 = (val & FB_GFX_FREQ_FUSE_MASK); | |
5207 | ||
7707df4a D |
5208 | return rp1; |
5209 | } | |
5210 | ||
f8f2b001 D |
5211 | static int valleyview_rps_guar_freq(struct drm_i915_private *dev_priv) |
5212 | { | |
5213 | u32 val, rp1; | |
5214 | ||
5215 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE); | |
5216 | ||
5217 | rp1 = (val & FB_GFX_FGUARANTEED_FREQ_FUSE_MASK) >> FB_GFX_FGUARANTEED_FREQ_FUSE_SHIFT; | |
5218 | ||
5219 | return rp1; | |
5220 | } | |
5221 | ||
03af2045 | 5222 | static int valleyview_rps_max_freq(struct drm_i915_private *dev_priv) |
0a073b84 JB |
5223 | { |
5224 | u32 val, rp0; | |
5225 | ||
64936258 | 5226 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE); |
0a073b84 JB |
5227 | |
5228 | rp0 = (val & FB_GFX_MAX_FREQ_FUSE_MASK) >> FB_GFX_MAX_FREQ_FUSE_SHIFT; | |
5229 | /* Clamp to max */ | |
5230 | rp0 = min_t(u32, rp0, 0xea); | |
5231 | ||
5232 | return rp0; | |
5233 | } | |
5234 | ||
5235 | static int valleyview_rps_rpe_freq(struct drm_i915_private *dev_priv) | |
5236 | { | |
5237 | u32 val, rpe; | |
5238 | ||
64936258 | 5239 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_LO); |
0a073b84 | 5240 | rpe = (val & FB_FMAX_VMIN_FREQ_LO_MASK) >> FB_FMAX_VMIN_FREQ_LO_SHIFT; |
64936258 | 5241 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_HI); |
0a073b84 JB |
5242 | rpe |= (val & FB_FMAX_VMIN_FREQ_HI_MASK) << 5; |
5243 | ||
5244 | return rpe; | |
5245 | } | |
5246 | ||
03af2045 | 5247 | static int valleyview_rps_min_freq(struct drm_i915_private *dev_priv) |
0a073b84 | 5248 | { |
36146035 ID |
5249 | u32 val; |
5250 | ||
5251 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM) & 0xff; | |
5252 | /* | |
5253 | * According to the BYT Punit GPU turbo HAS 1.1.6.3 the minimum value | |
5254 | * for the minimum frequency in GPLL mode is 0xc1. Contrary to this on | |
5255 | * a BYT-M B0 the above register contains 0xbf. Moreover when setting | |
5256 | * a frequency Punit will not allow values below 0xc0. Clamp it 0xc0 | |
5257 | * to make sure it matches what Punit accepts. | |
5258 | */ | |
5259 | return max_t(u32, val, 0xc0); | |
0a073b84 JB |
5260 | } |
5261 | ||
ae48434c ID |
5262 | /* Check that the pctx buffer wasn't move under us. */ |
5263 | static void valleyview_check_pctx(struct drm_i915_private *dev_priv) | |
5264 | { | |
5265 | unsigned long pctx_addr = I915_READ(VLV_PCBR) & ~4095; | |
5266 | ||
5267 | WARN_ON(pctx_addr != dev_priv->mm.stolen_base + | |
5268 | dev_priv->vlv_pctx->stolen->start); | |
5269 | } | |
5270 | ||
38807746 D |
5271 | |
5272 | /* Check that the pcbr address is not empty. */ | |
5273 | static void cherryview_check_pctx(struct drm_i915_private *dev_priv) | |
5274 | { | |
5275 | unsigned long pctx_addr = I915_READ(VLV_PCBR) & ~4095; | |
5276 | ||
5277 | WARN_ON((pctx_addr >> VLV_PCBR_ADDR_SHIFT) == 0); | |
5278 | } | |
5279 | ||
5280 | static void cherryview_setup_pctx(struct drm_device *dev) | |
5281 | { | |
5282 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5283 | unsigned long pctx_paddr, paddr; | |
5284 | struct i915_gtt *gtt = &dev_priv->gtt; | |
5285 | u32 pcbr; | |
5286 | int pctx_size = 32*1024; | |
5287 | ||
38807746 D |
5288 | pcbr = I915_READ(VLV_PCBR); |
5289 | if ((pcbr >> VLV_PCBR_ADDR_SHIFT) == 0) { | |
ce611ef8 | 5290 | DRM_DEBUG_DRIVER("BIOS didn't set up PCBR, fixing up\n"); |
38807746 D |
5291 | paddr = (dev_priv->mm.stolen_base + |
5292 | (gtt->stolen_size - pctx_size)); | |
5293 | ||
5294 | pctx_paddr = (paddr & (~4095)); | |
5295 | I915_WRITE(VLV_PCBR, pctx_paddr); | |
5296 | } | |
ce611ef8 VS |
5297 | |
5298 | DRM_DEBUG_DRIVER("PCBR: 0x%08x\n", I915_READ(VLV_PCBR)); | |
38807746 D |
5299 | } |
5300 | ||
c9cddffc JB |
5301 | static void valleyview_setup_pctx(struct drm_device *dev) |
5302 | { | |
5303 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5304 | struct drm_i915_gem_object *pctx; | |
5305 | unsigned long pctx_paddr; | |
5306 | u32 pcbr; | |
5307 | int pctx_size = 24*1024; | |
5308 | ||
ee504898 | 5309 | mutex_lock(&dev->struct_mutex); |
17b0c1f7 | 5310 | |
c9cddffc JB |
5311 | pcbr = I915_READ(VLV_PCBR); |
5312 | if (pcbr) { | |
5313 | /* BIOS set it up already, grab the pre-alloc'd space */ | |
5314 | int pcbr_offset; | |
5315 | ||
5316 | pcbr_offset = (pcbr & (~4095)) - dev_priv->mm.stolen_base; | |
5317 | pctx = i915_gem_object_create_stolen_for_preallocated(dev_priv->dev, | |
5318 | pcbr_offset, | |
190d6cd5 | 5319 | I915_GTT_OFFSET_NONE, |
c9cddffc JB |
5320 | pctx_size); |
5321 | goto out; | |
5322 | } | |
5323 | ||
ce611ef8 VS |
5324 | DRM_DEBUG_DRIVER("BIOS didn't set up PCBR, fixing up\n"); |
5325 | ||
c9cddffc JB |
5326 | /* |
5327 | * From the Gunit register HAS: | |
5328 | * The Gfx driver is expected to program this register and ensure | |
5329 | * proper allocation within Gfx stolen memory. For example, this | |
5330 | * register should be programmed such than the PCBR range does not | |
5331 | * overlap with other ranges, such as the frame buffer, protected | |
5332 | * memory, or any other relevant ranges. | |
5333 | */ | |
5334 | pctx = i915_gem_object_create_stolen(dev, pctx_size); | |
5335 | if (!pctx) { | |
5336 | DRM_DEBUG("not enough stolen space for PCTX, disabling\n"); | |
ee504898 | 5337 | goto out; |
c9cddffc JB |
5338 | } |
5339 | ||
5340 | pctx_paddr = dev_priv->mm.stolen_base + pctx->stolen->start; | |
5341 | I915_WRITE(VLV_PCBR, pctx_paddr); | |
5342 | ||
5343 | out: | |
ce611ef8 | 5344 | DRM_DEBUG_DRIVER("PCBR: 0x%08x\n", I915_READ(VLV_PCBR)); |
c9cddffc | 5345 | dev_priv->vlv_pctx = pctx; |
ee504898 | 5346 | mutex_unlock(&dev->struct_mutex); |
c9cddffc JB |
5347 | } |
5348 | ||
ae48434c ID |
5349 | static void valleyview_cleanup_pctx(struct drm_device *dev) |
5350 | { | |
5351 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5352 | ||
5353 | if (WARN_ON(!dev_priv->vlv_pctx)) | |
5354 | return; | |
5355 | ||
ee504898 | 5356 | drm_gem_object_unreference_unlocked(&dev_priv->vlv_pctx->base); |
ae48434c ID |
5357 | dev_priv->vlv_pctx = NULL; |
5358 | } | |
5359 | ||
4e80519e ID |
5360 | static void valleyview_init_gt_powersave(struct drm_device *dev) |
5361 | { | |
5362 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2bb25c17 | 5363 | u32 val; |
4e80519e ID |
5364 | |
5365 | valleyview_setup_pctx(dev); | |
5366 | ||
5367 | mutex_lock(&dev_priv->rps.hw_lock); | |
5368 | ||
2bb25c17 VS |
5369 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
5370 | switch ((val >> 6) & 3) { | |
5371 | case 0: | |
5372 | case 1: | |
5373 | dev_priv->mem_freq = 800; | |
5374 | break; | |
5375 | case 2: | |
5376 | dev_priv->mem_freq = 1066; | |
5377 | break; | |
5378 | case 3: | |
5379 | dev_priv->mem_freq = 1333; | |
5380 | break; | |
5381 | } | |
80b83b62 | 5382 | DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", dev_priv->mem_freq); |
2bb25c17 | 5383 | |
4e80519e ID |
5384 | dev_priv->rps.max_freq = valleyview_rps_max_freq(dev_priv); |
5385 | dev_priv->rps.rp0_freq = dev_priv->rps.max_freq; | |
5386 | DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5387 | intel_gpu_freq(dev_priv, dev_priv->rps.max_freq), |
4e80519e ID |
5388 | dev_priv->rps.max_freq); |
5389 | ||
5390 | dev_priv->rps.efficient_freq = valleyview_rps_rpe_freq(dev_priv); | |
5391 | DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5392 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
4e80519e ID |
5393 | dev_priv->rps.efficient_freq); |
5394 | ||
f8f2b001 D |
5395 | dev_priv->rps.rp1_freq = valleyview_rps_guar_freq(dev_priv); |
5396 | DRM_DEBUG_DRIVER("RP1(Guar Freq) GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5397 | intel_gpu_freq(dev_priv, dev_priv->rps.rp1_freq), |
f8f2b001 D |
5398 | dev_priv->rps.rp1_freq); |
5399 | ||
4e80519e ID |
5400 | dev_priv->rps.min_freq = valleyview_rps_min_freq(dev_priv); |
5401 | DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5402 | intel_gpu_freq(dev_priv, dev_priv->rps.min_freq), |
4e80519e ID |
5403 | dev_priv->rps.min_freq); |
5404 | ||
aed242ff CW |
5405 | dev_priv->rps.idle_freq = dev_priv->rps.min_freq; |
5406 | ||
4e80519e ID |
5407 | /* Preserve min/max settings in case of re-init */ |
5408 | if (dev_priv->rps.max_freq_softlimit == 0) | |
5409 | dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; | |
5410 | ||
5411 | if (dev_priv->rps.min_freq_softlimit == 0) | |
5412 | dev_priv->rps.min_freq_softlimit = dev_priv->rps.min_freq; | |
5413 | ||
5414 | mutex_unlock(&dev_priv->rps.hw_lock); | |
5415 | } | |
5416 | ||
38807746 D |
5417 | static void cherryview_init_gt_powersave(struct drm_device *dev) |
5418 | { | |
2b6b3a09 | 5419 | struct drm_i915_private *dev_priv = dev->dev_private; |
2bb25c17 | 5420 | u32 val; |
2b6b3a09 | 5421 | |
38807746 | 5422 | cherryview_setup_pctx(dev); |
2b6b3a09 D |
5423 | |
5424 | mutex_lock(&dev_priv->rps.hw_lock); | |
5425 | ||
a580516d | 5426 | mutex_lock(&dev_priv->sb_lock); |
c6e8f39d | 5427 | val = vlv_cck_read(dev_priv, CCK_FUSE_REG); |
a580516d | 5428 | mutex_unlock(&dev_priv->sb_lock); |
c6e8f39d | 5429 | |
2bb25c17 | 5430 | switch ((val >> 2) & 0x7) { |
2bb25c17 | 5431 | case 3: |
2bb25c17 VS |
5432 | dev_priv->mem_freq = 2000; |
5433 | break; | |
bfa7df01 | 5434 | default: |
2bb25c17 VS |
5435 | dev_priv->mem_freq = 1600; |
5436 | break; | |
5437 | } | |
80b83b62 | 5438 | DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", dev_priv->mem_freq); |
2bb25c17 | 5439 | |
2b6b3a09 D |
5440 | dev_priv->rps.max_freq = cherryview_rps_max_freq(dev_priv); |
5441 | dev_priv->rps.rp0_freq = dev_priv->rps.max_freq; | |
5442 | DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5443 | intel_gpu_freq(dev_priv, dev_priv->rps.max_freq), |
2b6b3a09 D |
5444 | dev_priv->rps.max_freq); |
5445 | ||
5446 | dev_priv->rps.efficient_freq = cherryview_rps_rpe_freq(dev_priv); | |
5447 | DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5448 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
2b6b3a09 D |
5449 | dev_priv->rps.efficient_freq); |
5450 | ||
7707df4a D |
5451 | dev_priv->rps.rp1_freq = cherryview_rps_guar_freq(dev_priv); |
5452 | DRM_DEBUG_DRIVER("RP1(Guar) GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5453 | intel_gpu_freq(dev_priv, dev_priv->rps.rp1_freq), |
7707df4a D |
5454 | dev_priv->rps.rp1_freq); |
5455 | ||
5b7c91b7 D |
5456 | /* PUnit validated range is only [RPe, RP0] */ |
5457 | dev_priv->rps.min_freq = dev_priv->rps.efficient_freq; | |
2b6b3a09 | 5458 | DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", |
7c59a9c1 | 5459 | intel_gpu_freq(dev_priv, dev_priv->rps.min_freq), |
2b6b3a09 D |
5460 | dev_priv->rps.min_freq); |
5461 | ||
1c14762d VS |
5462 | WARN_ONCE((dev_priv->rps.max_freq | |
5463 | dev_priv->rps.efficient_freq | | |
5464 | dev_priv->rps.rp1_freq | | |
5465 | dev_priv->rps.min_freq) & 1, | |
5466 | "Odd GPU freq values\n"); | |
5467 | ||
aed242ff CW |
5468 | dev_priv->rps.idle_freq = dev_priv->rps.min_freq; |
5469 | ||
2b6b3a09 D |
5470 | /* Preserve min/max settings in case of re-init */ |
5471 | if (dev_priv->rps.max_freq_softlimit == 0) | |
5472 | dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; | |
5473 | ||
5474 | if (dev_priv->rps.min_freq_softlimit == 0) | |
5475 | dev_priv->rps.min_freq_softlimit = dev_priv->rps.min_freq; | |
5476 | ||
5477 | mutex_unlock(&dev_priv->rps.hw_lock); | |
38807746 D |
5478 | } |
5479 | ||
4e80519e ID |
5480 | static void valleyview_cleanup_gt_powersave(struct drm_device *dev) |
5481 | { | |
5482 | valleyview_cleanup_pctx(dev); | |
5483 | } | |
5484 | ||
38807746 D |
5485 | static void cherryview_enable_rps(struct drm_device *dev) |
5486 | { | |
5487 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5488 | struct intel_engine_cs *ring; | |
2b6b3a09 | 5489 | u32 gtfifodbg, val, rc6_mode = 0, pcbr; |
38807746 D |
5490 | int i; |
5491 | ||
5492 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
5493 | ||
5494 | gtfifodbg = I915_READ(GTFIFODBG); | |
5495 | if (gtfifodbg) { | |
5496 | DRM_DEBUG_DRIVER("GT fifo had a previous error %x\n", | |
5497 | gtfifodbg); | |
5498 | I915_WRITE(GTFIFODBG, gtfifodbg); | |
5499 | } | |
5500 | ||
5501 | cherryview_check_pctx(dev_priv); | |
5502 | ||
5503 | /* 1a & 1b: Get forcewake during program sequence. Although the driver | |
5504 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 5505 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
38807746 | 5506 | |
160614a2 VS |
5507 | /* Disable RC states. */ |
5508 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
5509 | ||
38807746 D |
5510 | /* 2a: Program RC6 thresholds.*/ |
5511 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16); | |
5512 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ | |
5513 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
5514 | ||
5515 | for_each_ring(ring, dev_priv, i) | |
5516 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
5517 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
5518 | ||
f4f71c7d D |
5519 | /* TO threshold set to 500 us ( 0x186 * 1.28 us) */ |
5520 | I915_WRITE(GEN6_RC6_THRESHOLD, 0x186); | |
38807746 D |
5521 | |
5522 | /* allows RC6 residency counter to work */ | |
5523 | I915_WRITE(VLV_COUNTER_CONTROL, | |
5524 | _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH | | |
5525 | VLV_MEDIA_RC6_COUNT_EN | | |
5526 | VLV_RENDER_RC6_COUNT_EN)); | |
5527 | ||
5528 | /* For now we assume BIOS is allocating and populating the PCBR */ | |
5529 | pcbr = I915_READ(VLV_PCBR); | |
5530 | ||
38807746 D |
5531 | /* 3: Enable RC6 */ |
5532 | if ((intel_enable_rc6(dev) & INTEL_RC6_ENABLE) && | |
5533 | (pcbr >> VLV_PCBR_ADDR_SHIFT)) | |
af5a75a3 | 5534 | rc6_mode = GEN7_RC_CTL_TO_MODE; |
38807746 D |
5535 | |
5536 | I915_WRITE(GEN6_RC_CONTROL, rc6_mode); | |
5537 | ||
2b6b3a09 | 5538 | /* 4 Program defaults and thresholds for RPS*/ |
3cbdb48f | 5539 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000); |
2b6b3a09 D |
5540 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); |
5541 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); | |
5542 | I915_WRITE(GEN6_RP_UP_EI, 66000); | |
5543 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); | |
5544 | ||
5545 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
5546 | ||
5547 | /* 5: Enable RPS */ | |
5548 | I915_WRITE(GEN6_RP_CONTROL, | |
5549 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
eb973a5e | 5550 | GEN6_RP_MEDIA_IS_GFX | |
2b6b3a09 D |
5551 | GEN6_RP_ENABLE | |
5552 | GEN6_RP_UP_BUSY_AVG | | |
5553 | GEN6_RP_DOWN_IDLE_AVG); | |
5554 | ||
3ef62342 D |
5555 | /* Setting Fixed Bias */ |
5556 | val = VLV_OVERRIDE_EN | | |
5557 | VLV_SOC_TDP_EN | | |
5558 | CHV_BIAS_CPU_50_SOC_50; | |
5559 | vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val); | |
5560 | ||
2b6b3a09 D |
5561 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
5562 | ||
8d40c3ae VS |
5563 | /* RPS code assumes GPLL is used */ |
5564 | WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n"); | |
5565 | ||
742f491d | 5566 | DRM_DEBUG_DRIVER("GPLL enabled? %s\n", yesno(val & GPLLENABLE)); |
2b6b3a09 D |
5567 | DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val); |
5568 | ||
5569 | dev_priv->rps.cur_freq = (val >> 8) & 0xff; | |
5570 | DRM_DEBUG_DRIVER("current GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5571 | intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq), |
2b6b3a09 D |
5572 | dev_priv->rps.cur_freq); |
5573 | ||
5574 | DRM_DEBUG_DRIVER("setting GPU freq to %d MHz (%u)\n", | |
7c59a9c1 | 5575 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
2b6b3a09 D |
5576 | dev_priv->rps.efficient_freq); |
5577 | ||
5578 | valleyview_set_rps(dev_priv->dev, dev_priv->rps.efficient_freq); | |
5579 | ||
59bad947 | 5580 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
38807746 D |
5581 | } |
5582 | ||
0a073b84 JB |
5583 | static void valleyview_enable_rps(struct drm_device *dev) |
5584 | { | |
5585 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4872ba6 | 5586 | struct intel_engine_cs *ring; |
2a5913a8 | 5587 | u32 gtfifodbg, val, rc6_mode = 0; |
0a073b84 JB |
5588 | int i; |
5589 | ||
5590 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
5591 | ||
ae48434c ID |
5592 | valleyview_check_pctx(dev_priv); |
5593 | ||
0a073b84 | 5594 | if ((gtfifodbg = I915_READ(GTFIFODBG))) { |
f7d85c1e JB |
5595 | DRM_DEBUG_DRIVER("GT fifo had a previous error %x\n", |
5596 | gtfifodbg); | |
0a073b84 JB |
5597 | I915_WRITE(GTFIFODBG, gtfifodbg); |
5598 | } | |
5599 | ||
c8d9a590 | 5600 | /* If VLV, Forcewake all wells, else re-direct to regular path */ |
59bad947 | 5601 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
0a073b84 | 5602 | |
160614a2 VS |
5603 | /* Disable RC states. */ |
5604 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
5605 | ||
cad725fe | 5606 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000); |
0a073b84 JB |
5607 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); |
5608 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); | |
5609 | I915_WRITE(GEN6_RP_UP_EI, 66000); | |
5610 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); | |
5611 | ||
5612 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
5613 | ||
5614 | I915_WRITE(GEN6_RP_CONTROL, | |
5615 | GEN6_RP_MEDIA_TURBO | | |
5616 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
5617 | GEN6_RP_MEDIA_IS_GFX | | |
5618 | GEN6_RP_ENABLE | | |
5619 | GEN6_RP_UP_BUSY_AVG | | |
5620 | GEN6_RP_DOWN_IDLE_CONT); | |
5621 | ||
5622 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 0x00280000); | |
5623 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
5624 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
5625 | ||
5626 | for_each_ring(ring, dev_priv, i) | |
5627 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
5628 | ||
2f0aa304 | 5629 | I915_WRITE(GEN6_RC6_THRESHOLD, 0x557); |
0a073b84 JB |
5630 | |
5631 | /* allows RC6 residency counter to work */ | |
49798eb2 | 5632 | I915_WRITE(VLV_COUNTER_CONTROL, |
31685c25 D |
5633 | _MASKED_BIT_ENABLE(VLV_MEDIA_RC0_COUNT_EN | |
5634 | VLV_RENDER_RC0_COUNT_EN | | |
49798eb2 JB |
5635 | VLV_MEDIA_RC6_COUNT_EN | |
5636 | VLV_RENDER_RC6_COUNT_EN)); | |
31685c25 | 5637 | |
a2b23fe0 | 5638 | if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE) |
6b88f295 | 5639 | rc6_mode = GEN7_RC_CTL_TO_MODE | VLV_RC_CTL_CTX_RST_PARALLEL; |
dc39fff7 BW |
5640 | |
5641 | intel_print_rc6_info(dev, rc6_mode); | |
5642 | ||
a2b23fe0 | 5643 | I915_WRITE(GEN6_RC_CONTROL, rc6_mode); |
0a073b84 | 5644 | |
3ef62342 D |
5645 | /* Setting Fixed Bias */ |
5646 | val = VLV_OVERRIDE_EN | | |
5647 | VLV_SOC_TDP_EN | | |
5648 | VLV_BIAS_CPU_125_SOC_875; | |
5649 | vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val); | |
5650 | ||
64936258 | 5651 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
0a073b84 | 5652 | |
8d40c3ae VS |
5653 | /* RPS code assumes GPLL is used */ |
5654 | WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n"); | |
5655 | ||
742f491d | 5656 | DRM_DEBUG_DRIVER("GPLL enabled? %s\n", yesno(val & GPLLENABLE)); |
0a073b84 JB |
5657 | DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val); |
5658 | ||
b39fb297 | 5659 | dev_priv->rps.cur_freq = (val >> 8) & 0xff; |
73008b98 | 5660 | DRM_DEBUG_DRIVER("current GPU freq: %d MHz (%u)\n", |
7c59a9c1 | 5661 | intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq), |
b39fb297 | 5662 | dev_priv->rps.cur_freq); |
0a073b84 | 5663 | |
73008b98 | 5664 | DRM_DEBUG_DRIVER("setting GPU freq to %d MHz (%u)\n", |
7c59a9c1 | 5665 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
b39fb297 | 5666 | dev_priv->rps.efficient_freq); |
0a073b84 | 5667 | |
b39fb297 | 5668 | valleyview_set_rps(dev_priv->dev, dev_priv->rps.efficient_freq); |
0a073b84 | 5669 | |
59bad947 | 5670 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
0a073b84 JB |
5671 | } |
5672 | ||
dde18883 ED |
5673 | static unsigned long intel_pxfreq(u32 vidfreq) |
5674 | { | |
5675 | unsigned long freq; | |
5676 | int div = (vidfreq & 0x3f0000) >> 16; | |
5677 | int post = (vidfreq & 0x3000) >> 12; | |
5678 | int pre = (vidfreq & 0x7); | |
5679 | ||
5680 | if (!pre) | |
5681 | return 0; | |
5682 | ||
5683 | freq = ((div * 133333) / ((1<<post) * pre)); | |
5684 | ||
5685 | return freq; | |
5686 | } | |
5687 | ||
eb48eb00 DV |
5688 | static const struct cparams { |
5689 | u16 i; | |
5690 | u16 t; | |
5691 | u16 m; | |
5692 | u16 c; | |
5693 | } cparams[] = { | |
5694 | { 1, 1333, 301, 28664 }, | |
5695 | { 1, 1066, 294, 24460 }, | |
5696 | { 1, 800, 294, 25192 }, | |
5697 | { 0, 1333, 276, 27605 }, | |
5698 | { 0, 1066, 276, 27605 }, | |
5699 | { 0, 800, 231, 23784 }, | |
5700 | }; | |
5701 | ||
f531dcb2 | 5702 | static unsigned long __i915_chipset_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
5703 | { |
5704 | u64 total_count, diff, ret; | |
5705 | u32 count1, count2, count3, m = 0, c = 0; | |
5706 | unsigned long now = jiffies_to_msecs(jiffies), diff1; | |
5707 | int i; | |
5708 | ||
02d71956 DV |
5709 | assert_spin_locked(&mchdev_lock); |
5710 | ||
20e4d407 | 5711 | diff1 = now - dev_priv->ips.last_time1; |
eb48eb00 DV |
5712 | |
5713 | /* Prevent division-by-zero if we are asking too fast. | |
5714 | * Also, we don't get interesting results if we are polling | |
5715 | * faster than once in 10ms, so just return the saved value | |
5716 | * in such cases. | |
5717 | */ | |
5718 | if (diff1 <= 10) | |
20e4d407 | 5719 | return dev_priv->ips.chipset_power; |
eb48eb00 DV |
5720 | |
5721 | count1 = I915_READ(DMIEC); | |
5722 | count2 = I915_READ(DDREC); | |
5723 | count3 = I915_READ(CSIEC); | |
5724 | ||
5725 | total_count = count1 + count2 + count3; | |
5726 | ||
5727 | /* FIXME: handle per-counter overflow */ | |
20e4d407 DV |
5728 | if (total_count < dev_priv->ips.last_count1) { |
5729 | diff = ~0UL - dev_priv->ips.last_count1; | |
eb48eb00 DV |
5730 | diff += total_count; |
5731 | } else { | |
20e4d407 | 5732 | diff = total_count - dev_priv->ips.last_count1; |
eb48eb00 DV |
5733 | } |
5734 | ||
5735 | for (i = 0; i < ARRAY_SIZE(cparams); i++) { | |
20e4d407 DV |
5736 | if (cparams[i].i == dev_priv->ips.c_m && |
5737 | cparams[i].t == dev_priv->ips.r_t) { | |
eb48eb00 DV |
5738 | m = cparams[i].m; |
5739 | c = cparams[i].c; | |
5740 | break; | |
5741 | } | |
5742 | } | |
5743 | ||
5744 | diff = div_u64(diff, diff1); | |
5745 | ret = ((m * diff) + c); | |
5746 | ret = div_u64(ret, 10); | |
5747 | ||
20e4d407 DV |
5748 | dev_priv->ips.last_count1 = total_count; |
5749 | dev_priv->ips.last_time1 = now; | |
eb48eb00 | 5750 | |
20e4d407 | 5751 | dev_priv->ips.chipset_power = ret; |
eb48eb00 DV |
5752 | |
5753 | return ret; | |
5754 | } | |
5755 | ||
f531dcb2 CW |
5756 | unsigned long i915_chipset_val(struct drm_i915_private *dev_priv) |
5757 | { | |
3d13ef2e | 5758 | struct drm_device *dev = dev_priv->dev; |
f531dcb2 CW |
5759 | unsigned long val; |
5760 | ||
3d13ef2e | 5761 | if (INTEL_INFO(dev)->gen != 5) |
f531dcb2 CW |
5762 | return 0; |
5763 | ||
5764 | spin_lock_irq(&mchdev_lock); | |
5765 | ||
5766 | val = __i915_chipset_val(dev_priv); | |
5767 | ||
5768 | spin_unlock_irq(&mchdev_lock); | |
5769 | ||
5770 | return val; | |
5771 | } | |
5772 | ||
eb48eb00 DV |
5773 | unsigned long i915_mch_val(struct drm_i915_private *dev_priv) |
5774 | { | |
5775 | unsigned long m, x, b; | |
5776 | u32 tsfs; | |
5777 | ||
5778 | tsfs = I915_READ(TSFS); | |
5779 | ||
5780 | m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT); | |
5781 | x = I915_READ8(TR1); | |
5782 | ||
5783 | b = tsfs & TSFS_INTR_MASK; | |
5784 | ||
5785 | return ((m * x) / 127) - b; | |
5786 | } | |
5787 | ||
d972d6ee MK |
5788 | static int _pxvid_to_vd(u8 pxvid) |
5789 | { | |
5790 | if (pxvid == 0) | |
5791 | return 0; | |
5792 | ||
5793 | if (pxvid >= 8 && pxvid < 31) | |
5794 | pxvid = 31; | |
5795 | ||
5796 | return (pxvid + 2) * 125; | |
5797 | } | |
5798 | ||
5799 | static u32 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid) | |
eb48eb00 | 5800 | { |
3d13ef2e | 5801 | struct drm_device *dev = dev_priv->dev; |
d972d6ee MK |
5802 | const int vd = _pxvid_to_vd(pxvid); |
5803 | const int vm = vd - 1125; | |
5804 | ||
3d13ef2e | 5805 | if (INTEL_INFO(dev)->is_mobile) |
d972d6ee MK |
5806 | return vm > 0 ? vm : 0; |
5807 | ||
5808 | return vd; | |
eb48eb00 DV |
5809 | } |
5810 | ||
02d71956 | 5811 | static void __i915_update_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 | 5812 | { |
5ed0bdf2 | 5813 | u64 now, diff, diffms; |
eb48eb00 DV |
5814 | u32 count; |
5815 | ||
02d71956 | 5816 | assert_spin_locked(&mchdev_lock); |
eb48eb00 | 5817 | |
5ed0bdf2 TG |
5818 | now = ktime_get_raw_ns(); |
5819 | diffms = now - dev_priv->ips.last_time2; | |
5820 | do_div(diffms, NSEC_PER_MSEC); | |
eb48eb00 DV |
5821 | |
5822 | /* Don't divide by 0 */ | |
eb48eb00 DV |
5823 | if (!diffms) |
5824 | return; | |
5825 | ||
5826 | count = I915_READ(GFXEC); | |
5827 | ||
20e4d407 DV |
5828 | if (count < dev_priv->ips.last_count2) { |
5829 | diff = ~0UL - dev_priv->ips.last_count2; | |
eb48eb00 DV |
5830 | diff += count; |
5831 | } else { | |
20e4d407 | 5832 | diff = count - dev_priv->ips.last_count2; |
eb48eb00 DV |
5833 | } |
5834 | ||
20e4d407 DV |
5835 | dev_priv->ips.last_count2 = count; |
5836 | dev_priv->ips.last_time2 = now; | |
eb48eb00 DV |
5837 | |
5838 | /* More magic constants... */ | |
5839 | diff = diff * 1181; | |
5840 | diff = div_u64(diff, diffms * 10); | |
20e4d407 | 5841 | dev_priv->ips.gfx_power = diff; |
eb48eb00 DV |
5842 | } |
5843 | ||
02d71956 DV |
5844 | void i915_update_gfx_val(struct drm_i915_private *dev_priv) |
5845 | { | |
3d13ef2e DL |
5846 | struct drm_device *dev = dev_priv->dev; |
5847 | ||
5848 | if (INTEL_INFO(dev)->gen != 5) | |
02d71956 DV |
5849 | return; |
5850 | ||
9270388e | 5851 | spin_lock_irq(&mchdev_lock); |
02d71956 DV |
5852 | |
5853 | __i915_update_gfx_val(dev_priv); | |
5854 | ||
9270388e | 5855 | spin_unlock_irq(&mchdev_lock); |
02d71956 DV |
5856 | } |
5857 | ||
f531dcb2 | 5858 | static unsigned long __i915_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
5859 | { |
5860 | unsigned long t, corr, state1, corr2, state2; | |
5861 | u32 pxvid, ext_v; | |
5862 | ||
02d71956 DV |
5863 | assert_spin_locked(&mchdev_lock); |
5864 | ||
616847e7 | 5865 | pxvid = I915_READ(PXVFREQ(dev_priv->rps.cur_freq)); |
eb48eb00 DV |
5866 | pxvid = (pxvid >> 24) & 0x7f; |
5867 | ext_v = pvid_to_extvid(dev_priv, pxvid); | |
5868 | ||
5869 | state1 = ext_v; | |
5870 | ||
5871 | t = i915_mch_val(dev_priv); | |
5872 | ||
5873 | /* Revel in the empirically derived constants */ | |
5874 | ||
5875 | /* Correction factor in 1/100000 units */ | |
5876 | if (t > 80) | |
5877 | corr = ((t * 2349) + 135940); | |
5878 | else if (t >= 50) | |
5879 | corr = ((t * 964) + 29317); | |
5880 | else /* < 50 */ | |
5881 | corr = ((t * 301) + 1004); | |
5882 | ||
5883 | corr = corr * ((150142 * state1) / 10000 - 78642); | |
5884 | corr /= 100000; | |
20e4d407 | 5885 | corr2 = (corr * dev_priv->ips.corr); |
eb48eb00 DV |
5886 | |
5887 | state2 = (corr2 * state1) / 10000; | |
5888 | state2 /= 100; /* convert to mW */ | |
5889 | ||
02d71956 | 5890 | __i915_update_gfx_val(dev_priv); |
eb48eb00 | 5891 | |
20e4d407 | 5892 | return dev_priv->ips.gfx_power + state2; |
eb48eb00 DV |
5893 | } |
5894 | ||
f531dcb2 CW |
5895 | unsigned long i915_gfx_val(struct drm_i915_private *dev_priv) |
5896 | { | |
3d13ef2e | 5897 | struct drm_device *dev = dev_priv->dev; |
f531dcb2 CW |
5898 | unsigned long val; |
5899 | ||
3d13ef2e | 5900 | if (INTEL_INFO(dev)->gen != 5) |
f531dcb2 CW |
5901 | return 0; |
5902 | ||
5903 | spin_lock_irq(&mchdev_lock); | |
5904 | ||
5905 | val = __i915_gfx_val(dev_priv); | |
5906 | ||
5907 | spin_unlock_irq(&mchdev_lock); | |
5908 | ||
5909 | return val; | |
5910 | } | |
5911 | ||
eb48eb00 DV |
5912 | /** |
5913 | * i915_read_mch_val - return value for IPS use | |
5914 | * | |
5915 | * Calculate and return a value for the IPS driver to use when deciding whether | |
5916 | * we have thermal and power headroom to increase CPU or GPU power budget. | |
5917 | */ | |
5918 | unsigned long i915_read_mch_val(void) | |
5919 | { | |
5920 | struct drm_i915_private *dev_priv; | |
5921 | unsigned long chipset_val, graphics_val, ret = 0; | |
5922 | ||
9270388e | 5923 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
5924 | if (!i915_mch_dev) |
5925 | goto out_unlock; | |
5926 | dev_priv = i915_mch_dev; | |
5927 | ||
f531dcb2 CW |
5928 | chipset_val = __i915_chipset_val(dev_priv); |
5929 | graphics_val = __i915_gfx_val(dev_priv); | |
eb48eb00 DV |
5930 | |
5931 | ret = chipset_val + graphics_val; | |
5932 | ||
5933 | out_unlock: | |
9270388e | 5934 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
5935 | |
5936 | return ret; | |
5937 | } | |
5938 | EXPORT_SYMBOL_GPL(i915_read_mch_val); | |
5939 | ||
5940 | /** | |
5941 | * i915_gpu_raise - raise GPU frequency limit | |
5942 | * | |
5943 | * Raise the limit; IPS indicates we have thermal headroom. | |
5944 | */ | |
5945 | bool i915_gpu_raise(void) | |
5946 | { | |
5947 | struct drm_i915_private *dev_priv; | |
5948 | bool ret = true; | |
5949 | ||
9270388e | 5950 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
5951 | if (!i915_mch_dev) { |
5952 | ret = false; | |
5953 | goto out_unlock; | |
5954 | } | |
5955 | dev_priv = i915_mch_dev; | |
5956 | ||
20e4d407 DV |
5957 | if (dev_priv->ips.max_delay > dev_priv->ips.fmax) |
5958 | dev_priv->ips.max_delay--; | |
eb48eb00 DV |
5959 | |
5960 | out_unlock: | |
9270388e | 5961 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
5962 | |
5963 | return ret; | |
5964 | } | |
5965 | EXPORT_SYMBOL_GPL(i915_gpu_raise); | |
5966 | ||
5967 | /** | |
5968 | * i915_gpu_lower - lower GPU frequency limit | |
5969 | * | |
5970 | * IPS indicates we're close to a thermal limit, so throttle back the GPU | |
5971 | * frequency maximum. | |
5972 | */ | |
5973 | bool i915_gpu_lower(void) | |
5974 | { | |
5975 | struct drm_i915_private *dev_priv; | |
5976 | bool ret = true; | |
5977 | ||
9270388e | 5978 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
5979 | if (!i915_mch_dev) { |
5980 | ret = false; | |
5981 | goto out_unlock; | |
5982 | } | |
5983 | dev_priv = i915_mch_dev; | |
5984 | ||
20e4d407 DV |
5985 | if (dev_priv->ips.max_delay < dev_priv->ips.min_delay) |
5986 | dev_priv->ips.max_delay++; | |
eb48eb00 DV |
5987 | |
5988 | out_unlock: | |
9270388e | 5989 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
5990 | |
5991 | return ret; | |
5992 | } | |
5993 | EXPORT_SYMBOL_GPL(i915_gpu_lower); | |
5994 | ||
5995 | /** | |
5996 | * i915_gpu_busy - indicate GPU business to IPS | |
5997 | * | |
5998 | * Tell the IPS driver whether or not the GPU is busy. | |
5999 | */ | |
6000 | bool i915_gpu_busy(void) | |
6001 | { | |
6002 | struct drm_i915_private *dev_priv; | |
a4872ba6 | 6003 | struct intel_engine_cs *ring; |
eb48eb00 | 6004 | bool ret = false; |
f047e395 | 6005 | int i; |
eb48eb00 | 6006 | |
9270388e | 6007 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
6008 | if (!i915_mch_dev) |
6009 | goto out_unlock; | |
6010 | dev_priv = i915_mch_dev; | |
6011 | ||
f047e395 CW |
6012 | for_each_ring(ring, dev_priv, i) |
6013 | ret |= !list_empty(&ring->request_list); | |
eb48eb00 DV |
6014 | |
6015 | out_unlock: | |
9270388e | 6016 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6017 | |
6018 | return ret; | |
6019 | } | |
6020 | EXPORT_SYMBOL_GPL(i915_gpu_busy); | |
6021 | ||
6022 | /** | |
6023 | * i915_gpu_turbo_disable - disable graphics turbo | |
6024 | * | |
6025 | * Disable graphics turbo by resetting the max frequency and setting the | |
6026 | * current frequency to the default. | |
6027 | */ | |
6028 | bool i915_gpu_turbo_disable(void) | |
6029 | { | |
6030 | struct drm_i915_private *dev_priv; | |
6031 | bool ret = true; | |
6032 | ||
9270388e | 6033 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
6034 | if (!i915_mch_dev) { |
6035 | ret = false; | |
6036 | goto out_unlock; | |
6037 | } | |
6038 | dev_priv = i915_mch_dev; | |
6039 | ||
20e4d407 | 6040 | dev_priv->ips.max_delay = dev_priv->ips.fstart; |
eb48eb00 | 6041 | |
20e4d407 | 6042 | if (!ironlake_set_drps(dev_priv->dev, dev_priv->ips.fstart)) |
eb48eb00 DV |
6043 | ret = false; |
6044 | ||
6045 | out_unlock: | |
9270388e | 6046 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6047 | |
6048 | return ret; | |
6049 | } | |
6050 | EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable); | |
6051 | ||
6052 | /** | |
6053 | * Tells the intel_ips driver that the i915 driver is now loaded, if | |
6054 | * IPS got loaded first. | |
6055 | * | |
6056 | * This awkward dance is so that neither module has to depend on the | |
6057 | * other in order for IPS to do the appropriate communication of | |
6058 | * GPU turbo limits to i915. | |
6059 | */ | |
6060 | static void | |
6061 | ips_ping_for_i915_load(void) | |
6062 | { | |
6063 | void (*link)(void); | |
6064 | ||
6065 | link = symbol_get(ips_link_to_i915_driver); | |
6066 | if (link) { | |
6067 | link(); | |
6068 | symbol_put(ips_link_to_i915_driver); | |
6069 | } | |
6070 | } | |
6071 | ||
6072 | void intel_gpu_ips_init(struct drm_i915_private *dev_priv) | |
6073 | { | |
02d71956 DV |
6074 | /* We only register the i915 ips part with intel-ips once everything is |
6075 | * set up, to avoid intel-ips sneaking in and reading bogus values. */ | |
9270388e | 6076 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 6077 | i915_mch_dev = dev_priv; |
9270388e | 6078 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6079 | |
6080 | ips_ping_for_i915_load(); | |
6081 | } | |
6082 | ||
6083 | void intel_gpu_ips_teardown(void) | |
6084 | { | |
9270388e | 6085 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 6086 | i915_mch_dev = NULL; |
9270388e | 6087 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 | 6088 | } |
76c3552f | 6089 | |
8090c6b9 | 6090 | static void intel_init_emon(struct drm_device *dev) |
dde18883 ED |
6091 | { |
6092 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6093 | u32 lcfuse; | |
6094 | u8 pxw[16]; | |
6095 | int i; | |
6096 | ||
6097 | /* Disable to program */ | |
6098 | I915_WRITE(ECR, 0); | |
6099 | POSTING_READ(ECR); | |
6100 | ||
6101 | /* Program energy weights for various events */ | |
6102 | I915_WRITE(SDEW, 0x15040d00); | |
6103 | I915_WRITE(CSIEW0, 0x007f0000); | |
6104 | I915_WRITE(CSIEW1, 0x1e220004); | |
6105 | I915_WRITE(CSIEW2, 0x04000004); | |
6106 | ||
6107 | for (i = 0; i < 5; i++) | |
616847e7 | 6108 | I915_WRITE(PEW(i), 0); |
dde18883 | 6109 | for (i = 0; i < 3; i++) |
616847e7 | 6110 | I915_WRITE(DEW(i), 0); |
dde18883 ED |
6111 | |
6112 | /* Program P-state weights to account for frequency power adjustment */ | |
6113 | for (i = 0; i < 16; i++) { | |
616847e7 | 6114 | u32 pxvidfreq = I915_READ(PXVFREQ(i)); |
dde18883 ED |
6115 | unsigned long freq = intel_pxfreq(pxvidfreq); |
6116 | unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >> | |
6117 | PXVFREQ_PX_SHIFT; | |
6118 | unsigned long val; | |
6119 | ||
6120 | val = vid * vid; | |
6121 | val *= (freq / 1000); | |
6122 | val *= 255; | |
6123 | val /= (127*127*900); | |
6124 | if (val > 0xff) | |
6125 | DRM_ERROR("bad pxval: %ld\n", val); | |
6126 | pxw[i] = val; | |
6127 | } | |
6128 | /* Render standby states get 0 weight */ | |
6129 | pxw[14] = 0; | |
6130 | pxw[15] = 0; | |
6131 | ||
6132 | for (i = 0; i < 4; i++) { | |
6133 | u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) | | |
6134 | (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]); | |
616847e7 | 6135 | I915_WRITE(PXW(i), val); |
dde18883 ED |
6136 | } |
6137 | ||
6138 | /* Adjust magic regs to magic values (more experimental results) */ | |
6139 | I915_WRITE(OGW0, 0); | |
6140 | I915_WRITE(OGW1, 0); | |
6141 | I915_WRITE(EG0, 0x00007f00); | |
6142 | I915_WRITE(EG1, 0x0000000e); | |
6143 | I915_WRITE(EG2, 0x000e0000); | |
6144 | I915_WRITE(EG3, 0x68000300); | |
6145 | I915_WRITE(EG4, 0x42000000); | |
6146 | I915_WRITE(EG5, 0x00140031); | |
6147 | I915_WRITE(EG6, 0); | |
6148 | I915_WRITE(EG7, 0); | |
6149 | ||
6150 | for (i = 0; i < 8; i++) | |
616847e7 | 6151 | I915_WRITE(PXWL(i), 0); |
dde18883 ED |
6152 | |
6153 | /* Enable PMON + select events */ | |
6154 | I915_WRITE(ECR, 0x80000019); | |
6155 | ||
6156 | lcfuse = I915_READ(LCFUSE02); | |
6157 | ||
20e4d407 | 6158 | dev_priv->ips.corr = (lcfuse & LCFUSE_HIV_MASK); |
dde18883 ED |
6159 | } |
6160 | ||
ae48434c ID |
6161 | void intel_init_gt_powersave(struct drm_device *dev) |
6162 | { | |
b268c699 ID |
6163 | struct drm_i915_private *dev_priv = dev->dev_private; |
6164 | ||
b268c699 ID |
6165 | /* |
6166 | * RPM depends on RC6 to save restore the GT HW context, so make RC6 a | |
6167 | * requirement. | |
6168 | */ | |
6169 | if (!i915.enable_rc6) { | |
6170 | DRM_INFO("RC6 disabled, disabling runtime PM support\n"); | |
6171 | intel_runtime_pm_get(dev_priv); | |
6172 | } | |
e6069ca8 | 6173 | |
38807746 D |
6174 | if (IS_CHERRYVIEW(dev)) |
6175 | cherryview_init_gt_powersave(dev); | |
6176 | else if (IS_VALLEYVIEW(dev)) | |
4e80519e | 6177 | valleyview_init_gt_powersave(dev); |
ae48434c ID |
6178 | } |
6179 | ||
6180 | void intel_cleanup_gt_powersave(struct drm_device *dev) | |
6181 | { | |
b268c699 ID |
6182 | struct drm_i915_private *dev_priv = dev->dev_private; |
6183 | ||
38807746 D |
6184 | if (IS_CHERRYVIEW(dev)) |
6185 | return; | |
6186 | else if (IS_VALLEYVIEW(dev)) | |
4e80519e | 6187 | valleyview_cleanup_gt_powersave(dev); |
b268c699 ID |
6188 | |
6189 | if (!i915.enable_rc6) | |
6190 | intel_runtime_pm_put(dev_priv); | |
ae48434c ID |
6191 | } |
6192 | ||
dbea3cea ID |
6193 | static void gen6_suspend_rps(struct drm_device *dev) |
6194 | { | |
6195 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6196 | ||
6197 | flush_delayed_work(&dev_priv->rps.delayed_resume_work); | |
6198 | ||
4c2a8897 | 6199 | gen6_disable_rps_interrupts(dev); |
dbea3cea ID |
6200 | } |
6201 | ||
156c7ca0 JB |
6202 | /** |
6203 | * intel_suspend_gt_powersave - suspend PM work and helper threads | |
6204 | * @dev: drm device | |
6205 | * | |
6206 | * We don't want to disable RC6 or other features here, we just want | |
6207 | * to make sure any work we've queued has finished and won't bother | |
6208 | * us while we're suspended. | |
6209 | */ | |
6210 | void intel_suspend_gt_powersave(struct drm_device *dev) | |
6211 | { | |
6212 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6213 | ||
d4d70aa5 ID |
6214 | if (INTEL_INFO(dev)->gen < 6) |
6215 | return; | |
6216 | ||
dbea3cea | 6217 | gen6_suspend_rps(dev); |
b47adc17 D |
6218 | |
6219 | /* Force GPU to min freq during suspend */ | |
6220 | gen6_rps_idle(dev_priv); | |
156c7ca0 JB |
6221 | } |
6222 | ||
8090c6b9 DV |
6223 | void intel_disable_gt_powersave(struct drm_device *dev) |
6224 | { | |
1a01ab3b JB |
6225 | struct drm_i915_private *dev_priv = dev->dev_private; |
6226 | ||
930ebb46 | 6227 | if (IS_IRONLAKE_M(dev)) { |
8090c6b9 | 6228 | ironlake_disable_drps(dev); |
38807746 | 6229 | } else if (INTEL_INFO(dev)->gen >= 6) { |
10d8d366 | 6230 | intel_suspend_gt_powersave(dev); |
e494837a | 6231 | |
4fc688ce | 6232 | mutex_lock(&dev_priv->rps.hw_lock); |
20e49366 ZW |
6233 | if (INTEL_INFO(dev)->gen >= 9) |
6234 | gen9_disable_rps(dev); | |
6235 | else if (IS_CHERRYVIEW(dev)) | |
38807746 D |
6236 | cherryview_disable_rps(dev); |
6237 | else if (IS_VALLEYVIEW(dev)) | |
d20d4f0c JB |
6238 | valleyview_disable_rps(dev); |
6239 | else | |
6240 | gen6_disable_rps(dev); | |
e534770a | 6241 | |
c0951f0c | 6242 | dev_priv->rps.enabled = false; |
4fc688ce | 6243 | mutex_unlock(&dev_priv->rps.hw_lock); |
930ebb46 | 6244 | } |
8090c6b9 DV |
6245 | } |
6246 | ||
1a01ab3b JB |
6247 | static void intel_gen6_powersave_work(struct work_struct *work) |
6248 | { | |
6249 | struct drm_i915_private *dev_priv = | |
6250 | container_of(work, struct drm_i915_private, | |
6251 | rps.delayed_resume_work.work); | |
6252 | struct drm_device *dev = dev_priv->dev; | |
6253 | ||
4fc688ce | 6254 | mutex_lock(&dev_priv->rps.hw_lock); |
0a073b84 | 6255 | |
4c2a8897 | 6256 | gen6_reset_rps_interrupts(dev); |
3cc134e3 | 6257 | |
38807746 D |
6258 | if (IS_CHERRYVIEW(dev)) { |
6259 | cherryview_enable_rps(dev); | |
6260 | } else if (IS_VALLEYVIEW(dev)) { | |
0a073b84 | 6261 | valleyview_enable_rps(dev); |
20e49366 | 6262 | } else if (INTEL_INFO(dev)->gen >= 9) { |
b6fef0ef | 6263 | gen9_enable_rc6(dev); |
20e49366 | 6264 | gen9_enable_rps(dev); |
ef11bdb3 | 6265 | if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) |
cc017fb4 | 6266 | __gen6_update_ring_freq(dev); |
6edee7f3 BW |
6267 | } else if (IS_BROADWELL(dev)) { |
6268 | gen8_enable_rps(dev); | |
c2bc2fc5 | 6269 | __gen6_update_ring_freq(dev); |
0a073b84 JB |
6270 | } else { |
6271 | gen6_enable_rps(dev); | |
c2bc2fc5 | 6272 | __gen6_update_ring_freq(dev); |
0a073b84 | 6273 | } |
aed242ff CW |
6274 | |
6275 | WARN_ON(dev_priv->rps.max_freq < dev_priv->rps.min_freq); | |
6276 | WARN_ON(dev_priv->rps.idle_freq > dev_priv->rps.max_freq); | |
6277 | ||
6278 | WARN_ON(dev_priv->rps.efficient_freq < dev_priv->rps.min_freq); | |
6279 | WARN_ON(dev_priv->rps.efficient_freq > dev_priv->rps.max_freq); | |
6280 | ||
c0951f0c | 6281 | dev_priv->rps.enabled = true; |
3cc134e3 | 6282 | |
4c2a8897 | 6283 | gen6_enable_rps_interrupts(dev); |
3cc134e3 | 6284 | |
4fc688ce | 6285 | mutex_unlock(&dev_priv->rps.hw_lock); |
c6df39b5 ID |
6286 | |
6287 | intel_runtime_pm_put(dev_priv); | |
1a01ab3b JB |
6288 | } |
6289 | ||
8090c6b9 DV |
6290 | void intel_enable_gt_powersave(struct drm_device *dev) |
6291 | { | |
1a01ab3b JB |
6292 | struct drm_i915_private *dev_priv = dev->dev_private; |
6293 | ||
f61018b1 YZ |
6294 | /* Powersaving is controlled by the host when inside a VM */ |
6295 | if (intel_vgpu_active(dev)) | |
6296 | return; | |
6297 | ||
8090c6b9 DV |
6298 | if (IS_IRONLAKE_M(dev)) { |
6299 | ironlake_enable_drps(dev); | |
84f1b20f | 6300 | mutex_lock(&dev->struct_mutex); |
8090c6b9 | 6301 | intel_init_emon(dev); |
dc1d0136 | 6302 | mutex_unlock(&dev->struct_mutex); |
38807746 | 6303 | } else if (INTEL_INFO(dev)->gen >= 6) { |
1a01ab3b JB |
6304 | /* |
6305 | * PCU communication is slow and this doesn't need to be | |
6306 | * done at any specific time, so do this out of our fast path | |
6307 | * to make resume and init faster. | |
c6df39b5 ID |
6308 | * |
6309 | * We depend on the HW RC6 power context save/restore | |
6310 | * mechanism when entering D3 through runtime PM suspend. So | |
6311 | * disable RPM until RPS/RC6 is properly setup. We can only | |
6312 | * get here via the driver load/system resume/runtime resume | |
6313 | * paths, so the _noresume version is enough (and in case of | |
6314 | * runtime resume it's necessary). | |
1a01ab3b | 6315 | */ |
c6df39b5 ID |
6316 | if (schedule_delayed_work(&dev_priv->rps.delayed_resume_work, |
6317 | round_jiffies_up_relative(HZ))) | |
6318 | intel_runtime_pm_get_noresume(dev_priv); | |
8090c6b9 DV |
6319 | } |
6320 | } | |
6321 | ||
c6df39b5 ID |
6322 | void intel_reset_gt_powersave(struct drm_device *dev) |
6323 | { | |
6324 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6325 | ||
dbea3cea ID |
6326 | if (INTEL_INFO(dev)->gen < 6) |
6327 | return; | |
6328 | ||
6329 | gen6_suspend_rps(dev); | |
c6df39b5 | 6330 | dev_priv->rps.enabled = false; |
c6df39b5 ID |
6331 | } |
6332 | ||
3107bd48 DV |
6333 | static void ibx_init_clock_gating(struct drm_device *dev) |
6334 | { | |
6335 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6336 | ||
6337 | /* | |
6338 | * On Ibex Peak and Cougar Point, we need to disable clock | |
6339 | * gating for the panel power sequencer or it will fail to | |
6340 | * start up when no ports are active. | |
6341 | */ | |
6342 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); | |
6343 | } | |
6344 | ||
0e088b8f VS |
6345 | static void g4x_disable_trickle_feed(struct drm_device *dev) |
6346 | { | |
6347 | struct drm_i915_private *dev_priv = dev->dev_private; | |
b12ce1d8 | 6348 | enum pipe pipe; |
0e088b8f | 6349 | |
055e393f | 6350 | for_each_pipe(dev_priv, pipe) { |
0e088b8f VS |
6351 | I915_WRITE(DSPCNTR(pipe), |
6352 | I915_READ(DSPCNTR(pipe)) | | |
6353 | DISPPLANE_TRICKLE_FEED_DISABLE); | |
b12ce1d8 VS |
6354 | |
6355 | I915_WRITE(DSPSURF(pipe), I915_READ(DSPSURF(pipe))); | |
6356 | POSTING_READ(DSPSURF(pipe)); | |
0e088b8f VS |
6357 | } |
6358 | } | |
6359 | ||
017636cc VS |
6360 | static void ilk_init_lp_watermarks(struct drm_device *dev) |
6361 | { | |
6362 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6363 | ||
6364 | I915_WRITE(WM3_LP_ILK, I915_READ(WM3_LP_ILK) & ~WM1_LP_SR_EN); | |
6365 | I915_WRITE(WM2_LP_ILK, I915_READ(WM2_LP_ILK) & ~WM1_LP_SR_EN); | |
6366 | I915_WRITE(WM1_LP_ILK, I915_READ(WM1_LP_ILK) & ~WM1_LP_SR_EN); | |
6367 | ||
6368 | /* | |
6369 | * Don't touch WM1S_LP_EN here. | |
6370 | * Doing so could cause underruns. | |
6371 | */ | |
6372 | } | |
6373 | ||
1fa61106 | 6374 | static void ironlake_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6375 | { |
6376 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231e54f6 | 6377 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 6378 | |
f1e8fa56 DL |
6379 | /* |
6380 | * Required for FBC | |
6381 | * WaFbcDisableDpfcClockGating:ilk | |
6382 | */ | |
4d47e4f5 DL |
6383 | dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE | |
6384 | ILK_DPFCUNIT_CLOCK_GATE_DISABLE | | |
6385 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE; | |
6f1d69b0 ED |
6386 | |
6387 | I915_WRITE(PCH_3DCGDIS0, | |
6388 | MARIUNIT_CLOCK_GATE_DISABLE | | |
6389 | SVSMUNIT_CLOCK_GATE_DISABLE); | |
6390 | I915_WRITE(PCH_3DCGDIS1, | |
6391 | VFMUNIT_CLOCK_GATE_DISABLE); | |
6392 | ||
6f1d69b0 ED |
6393 | /* |
6394 | * According to the spec the following bits should be set in | |
6395 | * order to enable memory self-refresh | |
6396 | * The bit 22/21 of 0x42004 | |
6397 | * The bit 5 of 0x42020 | |
6398 | * The bit 15 of 0x45000 | |
6399 | */ | |
6400 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
6401 | (I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6402 | ILK_DPARB_GATE | ILK_VSDPFD_FULL)); | |
4d47e4f5 | 6403 | dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE; |
6f1d69b0 ED |
6404 | I915_WRITE(DISP_ARB_CTL, |
6405 | (I915_READ(DISP_ARB_CTL) | | |
6406 | DISP_FBC_WM_DIS)); | |
017636cc VS |
6407 | |
6408 | ilk_init_lp_watermarks(dev); | |
6f1d69b0 ED |
6409 | |
6410 | /* | |
6411 | * Based on the document from hardware guys the following bits | |
6412 | * should be set unconditionally in order to enable FBC. | |
6413 | * The bit 22 of 0x42000 | |
6414 | * The bit 22 of 0x42004 | |
6415 | * The bit 7,8,9 of 0x42020. | |
6416 | */ | |
6417 | if (IS_IRONLAKE_M(dev)) { | |
4bb35334 | 6418 | /* WaFbcAsynchFlipDisableFbcQueue:ilk */ |
6f1d69b0 ED |
6419 | I915_WRITE(ILK_DISPLAY_CHICKEN1, |
6420 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
6421 | ILK_FBCQ_DIS); | |
6422 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
6423 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6424 | ILK_DPARB_GATE); | |
6f1d69b0 ED |
6425 | } |
6426 | ||
4d47e4f5 DL |
6427 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
6428 | ||
6f1d69b0 ED |
6429 | I915_WRITE(ILK_DISPLAY_CHICKEN2, |
6430 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6431 | ILK_ELPIN_409_SELECT); | |
6432 | I915_WRITE(_3D_CHICKEN2, | |
6433 | _3D_CHICKEN2_WM_READ_PIPELINED << 16 | | |
6434 | _3D_CHICKEN2_WM_READ_PIPELINED); | |
4358a374 | 6435 | |
ecdb4eb7 | 6436 | /* WaDisableRenderCachePipelinedFlush:ilk */ |
4358a374 DV |
6437 | I915_WRITE(CACHE_MODE_0, |
6438 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
3107bd48 | 6439 | |
4e04632e AG |
6440 | /* WaDisable_RenderCache_OperationalFlush:ilk */ |
6441 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6442 | ||
0e088b8f | 6443 | g4x_disable_trickle_feed(dev); |
bdad2b2f | 6444 | |
3107bd48 DV |
6445 | ibx_init_clock_gating(dev); |
6446 | } | |
6447 | ||
6448 | static void cpt_init_clock_gating(struct drm_device *dev) | |
6449 | { | |
6450 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6451 | int pipe; | |
3f704fa2 | 6452 | uint32_t val; |
3107bd48 DV |
6453 | |
6454 | /* | |
6455 | * On Ibex Peak and Cougar Point, we need to disable clock | |
6456 | * gating for the panel power sequencer or it will fail to | |
6457 | * start up when no ports are active. | |
6458 | */ | |
cd664078 JB |
6459 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE | |
6460 | PCH_DPLUNIT_CLOCK_GATE_DISABLE | | |
6461 | PCH_CPUNIT_CLOCK_GATE_DISABLE); | |
3107bd48 DV |
6462 | I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) | |
6463 | DPLS_EDP_PPS_FIX_DIS); | |
335c07b7 TI |
6464 | /* The below fixes the weird display corruption, a few pixels shifted |
6465 | * downward, on (only) LVDS of some HP laptops with IVY. | |
6466 | */ | |
055e393f | 6467 | for_each_pipe(dev_priv, pipe) { |
dc4bd2d1 PZ |
6468 | val = I915_READ(TRANS_CHICKEN2(pipe)); |
6469 | val |= TRANS_CHICKEN2_TIMING_OVERRIDE; | |
6470 | val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED; | |
41aa3448 | 6471 | if (dev_priv->vbt.fdi_rx_polarity_inverted) |
3f704fa2 | 6472 | val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED; |
dc4bd2d1 PZ |
6473 | val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK; |
6474 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER; | |
6475 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH; | |
3f704fa2 PZ |
6476 | I915_WRITE(TRANS_CHICKEN2(pipe), val); |
6477 | } | |
3107bd48 | 6478 | /* WADP0ClockGatingDisable */ |
055e393f | 6479 | for_each_pipe(dev_priv, pipe) { |
3107bd48 DV |
6480 | I915_WRITE(TRANS_CHICKEN1(pipe), |
6481 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); | |
6482 | } | |
6f1d69b0 ED |
6483 | } |
6484 | ||
1d7aaa0c DV |
6485 | static void gen6_check_mch_setup(struct drm_device *dev) |
6486 | { | |
6487 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6488 | uint32_t tmp; | |
6489 | ||
6490 | tmp = I915_READ(MCH_SSKPD); | |
df662a28 DV |
6491 | if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL) |
6492 | DRM_DEBUG_KMS("Wrong MCH_SSKPD value: 0x%08x This can cause underruns.\n", | |
6493 | tmp); | |
1d7aaa0c DV |
6494 | } |
6495 | ||
1fa61106 | 6496 | static void gen6_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6497 | { |
6498 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231e54f6 | 6499 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 6500 | |
231e54f6 | 6501 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
6f1d69b0 ED |
6502 | |
6503 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
6504 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6505 | ILK_ELPIN_409_SELECT); | |
6506 | ||
ecdb4eb7 | 6507 | /* WaDisableHiZPlanesWhenMSAAEnabled:snb */ |
4283908e DV |
6508 | I915_WRITE(_3D_CHICKEN, |
6509 | _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB)); | |
6510 | ||
4e04632e AG |
6511 | /* WaDisable_RenderCache_OperationalFlush:snb */ |
6512 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6513 | ||
8d85d272 VS |
6514 | /* |
6515 | * BSpec recoomends 8x4 when MSAA is used, | |
6516 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
6517 | * |
6518 | * Note that PS/WM thread counts depend on the WIZ hashing | |
6519 | * disable bit, which we don't touch here, but it's good | |
6520 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
8d85d272 VS |
6521 | */ |
6522 | I915_WRITE(GEN6_GT_MODE, | |
98533251 | 6523 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
8d85d272 | 6524 | |
017636cc | 6525 | ilk_init_lp_watermarks(dev); |
6f1d69b0 | 6526 | |
6f1d69b0 | 6527 | I915_WRITE(CACHE_MODE_0, |
50743298 | 6528 | _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB)); |
6f1d69b0 ED |
6529 | |
6530 | I915_WRITE(GEN6_UCGCTL1, | |
6531 | I915_READ(GEN6_UCGCTL1) | | |
6532 | GEN6_BLBUNIT_CLOCK_GATE_DISABLE | | |
6533 | GEN6_CSUNIT_CLOCK_GATE_DISABLE); | |
6534 | ||
6535 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock | |
6536 | * gating disable must be set. Failure to set it results in | |
6537 | * flickering pixels due to Z write ordering failures after | |
6538 | * some amount of runtime in the Mesa "fire" demo, and Unigine | |
6539 | * Sanctuary and Tropics, and apparently anything else with | |
6540 | * alpha test or pixel discard. | |
6541 | * | |
6542 | * According to the spec, bit 11 (RCCUNIT) must also be set, | |
6543 | * but we didn't debug actual testcases to find it out. | |
0f846f81 | 6544 | * |
ef59318c VS |
6545 | * WaDisableRCCUnitClockGating:snb |
6546 | * WaDisableRCPBUnitClockGating:snb | |
6f1d69b0 ED |
6547 | */ |
6548 | I915_WRITE(GEN6_UCGCTL2, | |
6549 | GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | | |
6550 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); | |
6551 | ||
5eb146dd | 6552 | /* WaStripsFansDisableFastClipPerformanceFix:snb */ |
743b57d8 VS |
6553 | I915_WRITE(_3D_CHICKEN3, |
6554 | _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL)); | |
6f1d69b0 | 6555 | |
e927ecde VS |
6556 | /* |
6557 | * Bspec says: | |
6558 | * "This bit must be set if 3DSTATE_CLIP clip mode is set to normal and | |
6559 | * 3DSTATE_SF number of SF output attributes is more than 16." | |
6560 | */ | |
6561 | I915_WRITE(_3D_CHICKEN3, | |
6562 | _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_PIPELINED_ATTR_FETCH)); | |
6563 | ||
6f1d69b0 ED |
6564 | /* |
6565 | * According to the spec the following bits should be | |
6566 | * set in order to enable memory self-refresh and fbc: | |
6567 | * The bit21 and bit22 of 0x42000 | |
6568 | * The bit21 and bit22 of 0x42004 | |
6569 | * The bit5 and bit7 of 0x42020 | |
6570 | * The bit14 of 0x70180 | |
6571 | * The bit14 of 0x71180 | |
4bb35334 DL |
6572 | * |
6573 | * WaFbcAsynchFlipDisableFbcQueue:snb | |
6f1d69b0 ED |
6574 | */ |
6575 | I915_WRITE(ILK_DISPLAY_CHICKEN1, | |
6576 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
6577 | ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS); | |
6578 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
6579 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6580 | ILK_DPARB_GATE | ILK_VSDPFD_FULL); | |
231e54f6 DL |
6581 | I915_WRITE(ILK_DSPCLK_GATE_D, |
6582 | I915_READ(ILK_DSPCLK_GATE_D) | | |
6583 | ILK_DPARBUNIT_CLOCK_GATE_ENABLE | | |
6584 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE); | |
6f1d69b0 | 6585 | |
0e088b8f | 6586 | g4x_disable_trickle_feed(dev); |
f8f2ac9a | 6587 | |
3107bd48 | 6588 | cpt_init_clock_gating(dev); |
1d7aaa0c DV |
6589 | |
6590 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
6591 | } |
6592 | ||
6593 | static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv) | |
6594 | { | |
6595 | uint32_t reg = I915_READ(GEN7_FF_THREAD_MODE); | |
6596 | ||
3aad9059 | 6597 | /* |
46680e0a | 6598 | * WaVSThreadDispatchOverride:ivb,vlv |
3aad9059 VS |
6599 | * |
6600 | * This actually overrides the dispatch | |
6601 | * mode for all thread types. | |
6602 | */ | |
6f1d69b0 ED |
6603 | reg &= ~GEN7_FF_SCHED_MASK; |
6604 | reg |= GEN7_FF_TS_SCHED_HW; | |
6605 | reg |= GEN7_FF_VS_SCHED_HW; | |
6606 | reg |= GEN7_FF_DS_SCHED_HW; | |
6607 | ||
6608 | I915_WRITE(GEN7_FF_THREAD_MODE, reg); | |
6609 | } | |
6610 | ||
17a303ec PZ |
6611 | static void lpt_init_clock_gating(struct drm_device *dev) |
6612 | { | |
6613 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6614 | ||
6615 | /* | |
6616 | * TODO: this bit should only be enabled when really needed, then | |
6617 | * disabled when not needed anymore in order to save power. | |
6618 | */ | |
c2699524 | 6619 | if (HAS_PCH_LPT_LP(dev)) |
17a303ec PZ |
6620 | I915_WRITE(SOUTH_DSPCLK_GATE_D, |
6621 | I915_READ(SOUTH_DSPCLK_GATE_D) | | |
6622 | PCH_LP_PARTITION_LEVEL_DISABLE); | |
0a790cdb PZ |
6623 | |
6624 | /* WADPOClockGatingDisable:hsw */ | |
36c0d0cf VS |
6625 | I915_WRITE(TRANS_CHICKEN1(PIPE_A), |
6626 | I915_READ(TRANS_CHICKEN1(PIPE_A)) | | |
0a790cdb | 6627 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); |
17a303ec PZ |
6628 | } |
6629 | ||
7d708ee4 ID |
6630 | static void lpt_suspend_hw(struct drm_device *dev) |
6631 | { | |
6632 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6633 | ||
c2699524 | 6634 | if (HAS_PCH_LPT_LP(dev)) { |
7d708ee4 ID |
6635 | uint32_t val = I915_READ(SOUTH_DSPCLK_GATE_D); |
6636 | ||
6637 | val &= ~PCH_LP_PARTITION_LEVEL_DISABLE; | |
6638 | I915_WRITE(SOUTH_DSPCLK_GATE_D, val); | |
6639 | } | |
6640 | } | |
6641 | ||
47c2bd97 | 6642 | static void broadwell_init_clock_gating(struct drm_device *dev) |
1020a5c2 BW |
6643 | { |
6644 | struct drm_i915_private *dev_priv = dev->dev_private; | |
07d27e20 | 6645 | enum pipe pipe; |
4d487cff | 6646 | uint32_t misccpctl; |
1020a5c2 | 6647 | |
7ad0dbab | 6648 | ilk_init_lp_watermarks(dev); |
50ed5fbd | 6649 | |
ab57fff1 | 6650 | /* WaSwitchSolVfFArbitrationPriority:bdw */ |
50ed5fbd | 6651 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); |
fe4ab3ce | 6652 | |
ab57fff1 | 6653 | /* WaPsrDPAMaskVBlankInSRD:bdw */ |
fe4ab3ce BW |
6654 | I915_WRITE(CHICKEN_PAR1_1, |
6655 | I915_READ(CHICKEN_PAR1_1) | DPA_MASK_VBLANK_SRD); | |
6656 | ||
ab57fff1 | 6657 | /* WaPsrDPRSUnmaskVBlankInSRD:bdw */ |
055e393f | 6658 | for_each_pipe(dev_priv, pipe) { |
07d27e20 | 6659 | I915_WRITE(CHICKEN_PIPESL_1(pipe), |
c7c65622 | 6660 | I915_READ(CHICKEN_PIPESL_1(pipe)) | |
8f670bb1 | 6661 | BDW_DPRS_MASK_VBLANK_SRD); |
fe4ab3ce | 6662 | } |
63801f21 | 6663 | |
ab57fff1 BW |
6664 | /* WaVSRefCountFullforceMissDisable:bdw */ |
6665 | /* WaDSRefCountFullforceMissDisable:bdw */ | |
6666 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
6667 | I915_READ(GEN7_FF_THREAD_MODE) & | |
6668 | ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME)); | |
36075a4c | 6669 | |
295e8bb7 VS |
6670 | I915_WRITE(GEN6_RC_SLEEP_PSMI_CONTROL, |
6671 | _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); | |
4f1ca9e9 VS |
6672 | |
6673 | /* WaDisableSDEUnitClockGating:bdw */ | |
6674 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
6675 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
5d708680 | 6676 | |
4d487cff VS |
6677 | /* |
6678 | * WaProgramL3SqcReg1Default:bdw | |
6679 | * WaTempDisableDOPClkGating:bdw | |
6680 | */ | |
6681 | misccpctl = I915_READ(GEN7_MISCCPCTL); | |
6682 | I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); | |
6683 | I915_WRITE(GEN8_L3SQCREG1, BDW_WA_L3SQCREG1_DEFAULT); | |
6684 | I915_WRITE(GEN7_MISCCPCTL, misccpctl); | |
6685 | ||
6d50b065 VS |
6686 | /* |
6687 | * WaGttCachingOffByDefault:bdw | |
6688 | * GTT cache may not work with big pages, so if those | |
6689 | * are ever enabled GTT cache may need to be disabled. | |
6690 | */ | |
6691 | I915_WRITE(HSW_GTT_CACHE_EN, GTT_CACHE_EN_ALL); | |
6692 | ||
89d6b2b8 | 6693 | lpt_init_clock_gating(dev); |
1020a5c2 BW |
6694 | } |
6695 | ||
cad2a2d7 ED |
6696 | static void haswell_init_clock_gating(struct drm_device *dev) |
6697 | { | |
6698 | struct drm_i915_private *dev_priv = dev->dev_private; | |
cad2a2d7 | 6699 | |
017636cc | 6700 | ilk_init_lp_watermarks(dev); |
cad2a2d7 | 6701 | |
f3fc4884 FJ |
6702 | /* L3 caching of data atomics doesn't work -- disable it. */ |
6703 | I915_WRITE(HSW_SCRATCH1, HSW_SCRATCH1_L3_DATA_ATOMICS_DISABLE); | |
6704 | I915_WRITE(HSW_ROW_CHICKEN3, | |
6705 | _MASKED_BIT_ENABLE(HSW_ROW_CHICKEN3_L3_GLOBAL_ATOMICS_DISABLE)); | |
6706 | ||
ecdb4eb7 | 6707 | /* This is required by WaCatErrorRejectionIssue:hsw */ |
cad2a2d7 ED |
6708 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
6709 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
6710 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
6711 | ||
e36ea7ff VS |
6712 | /* WaVSRefCountFullforceMissDisable:hsw */ |
6713 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
6714 | I915_READ(GEN7_FF_THREAD_MODE) & ~GEN7_FF_VS_REF_CNT_FFME); | |
cad2a2d7 | 6715 | |
4e04632e AG |
6716 | /* WaDisable_RenderCache_OperationalFlush:hsw */ |
6717 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6718 | ||
fe27c606 CW |
6719 | /* enable HiZ Raw Stall Optimization */ |
6720 | I915_WRITE(CACHE_MODE_0_GEN7, | |
6721 | _MASKED_BIT_DISABLE(HIZ_RAW_STALL_OPT_DISABLE)); | |
6722 | ||
ecdb4eb7 | 6723 | /* WaDisable4x2SubspanOptimization:hsw */ |
cad2a2d7 ED |
6724 | I915_WRITE(CACHE_MODE_1, |
6725 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
1544d9d5 | 6726 | |
a12c4967 VS |
6727 | /* |
6728 | * BSpec recommends 8x4 when MSAA is used, | |
6729 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
6730 | * |
6731 | * Note that PS/WM thread counts depend on the WIZ hashing | |
6732 | * disable bit, which we don't touch here, but it's good | |
6733 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
a12c4967 VS |
6734 | */ |
6735 | I915_WRITE(GEN7_GT_MODE, | |
98533251 | 6736 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
a12c4967 | 6737 | |
94411593 KG |
6738 | /* WaSampleCChickenBitEnable:hsw */ |
6739 | I915_WRITE(HALF_SLICE_CHICKEN3, | |
6740 | _MASKED_BIT_ENABLE(HSW_SAMPLE_C_PERFORMANCE)); | |
6741 | ||
ecdb4eb7 | 6742 | /* WaSwitchSolVfFArbitrationPriority:hsw */ |
e3dff585 BW |
6743 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); |
6744 | ||
90a88643 PZ |
6745 | /* WaRsPkgCStateDisplayPMReq:hsw */ |
6746 | I915_WRITE(CHICKEN_PAR1_1, | |
6747 | I915_READ(CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES); | |
1544d9d5 | 6748 | |
17a303ec | 6749 | lpt_init_clock_gating(dev); |
cad2a2d7 ED |
6750 | } |
6751 | ||
1fa61106 | 6752 | static void ivybridge_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6753 | { |
6754 | struct drm_i915_private *dev_priv = dev->dev_private; | |
20848223 | 6755 | uint32_t snpcr; |
6f1d69b0 | 6756 | |
017636cc | 6757 | ilk_init_lp_watermarks(dev); |
6f1d69b0 | 6758 | |
231e54f6 | 6759 | I915_WRITE(ILK_DSPCLK_GATE_D, ILK_VRHUNIT_CLOCK_GATE_DISABLE); |
6f1d69b0 | 6760 | |
ecdb4eb7 | 6761 | /* WaDisableEarlyCull:ivb */ |
87f8020e JB |
6762 | I915_WRITE(_3D_CHICKEN3, |
6763 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
6764 | ||
ecdb4eb7 | 6765 | /* WaDisableBackToBackFlipFix:ivb */ |
6f1d69b0 ED |
6766 | I915_WRITE(IVB_CHICKEN3, |
6767 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
6768 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
6769 | ||
ecdb4eb7 | 6770 | /* WaDisablePSDDualDispatchEnable:ivb */ |
12f3382b JB |
6771 | if (IS_IVB_GT1(dev)) |
6772 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, | |
6773 | _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
12f3382b | 6774 | |
4e04632e AG |
6775 | /* WaDisable_RenderCache_OperationalFlush:ivb */ |
6776 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6777 | ||
ecdb4eb7 | 6778 | /* Apply the WaDisableRHWOOptimizationForRenderHang:ivb workaround. */ |
6f1d69b0 ED |
6779 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
6780 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); | |
6781 | ||
ecdb4eb7 | 6782 | /* WaApplyL3ControlAndL3ChickenMode:ivb */ |
6f1d69b0 ED |
6783 | I915_WRITE(GEN7_L3CNTLREG1, |
6784 | GEN7_WA_FOR_GEN7_L3_CONTROL); | |
6785 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, | |
8ab43976 JB |
6786 | GEN7_WA_L3_CHICKEN_MODE); |
6787 | if (IS_IVB_GT1(dev)) | |
6788 | I915_WRITE(GEN7_ROW_CHICKEN2, | |
6789 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
412236c2 VS |
6790 | else { |
6791 | /* must write both registers */ | |
6792 | I915_WRITE(GEN7_ROW_CHICKEN2, | |
6793 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
8ab43976 JB |
6794 | I915_WRITE(GEN7_ROW_CHICKEN2_GT2, |
6795 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
412236c2 | 6796 | } |
6f1d69b0 | 6797 | |
ecdb4eb7 | 6798 | /* WaForceL3Serialization:ivb */ |
61939d97 JB |
6799 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
6800 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
6801 | ||
1b80a19a | 6802 | /* |
0f846f81 | 6803 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. |
ecdb4eb7 | 6804 | * This implements the WaDisableRCZUnitClockGating:ivb workaround. |
0f846f81 JB |
6805 | */ |
6806 | I915_WRITE(GEN6_UCGCTL2, | |
28acf3b2 | 6807 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE); |
0f846f81 | 6808 | |
ecdb4eb7 | 6809 | /* This is required by WaCatErrorRejectionIssue:ivb */ |
6f1d69b0 ED |
6810 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
6811 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
6812 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
6813 | ||
0e088b8f | 6814 | g4x_disable_trickle_feed(dev); |
6f1d69b0 ED |
6815 | |
6816 | gen7_setup_fixed_func_scheduler(dev_priv); | |
97e1930f | 6817 | |
22721343 CW |
6818 | if (0) { /* causes HiZ corruption on ivb:gt1 */ |
6819 | /* enable HiZ Raw Stall Optimization */ | |
6820 | I915_WRITE(CACHE_MODE_0_GEN7, | |
6821 | _MASKED_BIT_DISABLE(HIZ_RAW_STALL_OPT_DISABLE)); | |
6822 | } | |
116f2b6d | 6823 | |
ecdb4eb7 | 6824 | /* WaDisable4x2SubspanOptimization:ivb */ |
97e1930f DV |
6825 | I915_WRITE(CACHE_MODE_1, |
6826 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
20848223 | 6827 | |
a607c1a4 VS |
6828 | /* |
6829 | * BSpec recommends 8x4 when MSAA is used, | |
6830 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
6831 | * |
6832 | * Note that PS/WM thread counts depend on the WIZ hashing | |
6833 | * disable bit, which we don't touch here, but it's good | |
6834 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
a607c1a4 VS |
6835 | */ |
6836 | I915_WRITE(GEN7_GT_MODE, | |
98533251 | 6837 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
a607c1a4 | 6838 | |
20848223 BW |
6839 | snpcr = I915_READ(GEN6_MBCUNIT_SNPCR); |
6840 | snpcr &= ~GEN6_MBC_SNPCR_MASK; | |
6841 | snpcr |= GEN6_MBC_SNPCR_MED; | |
6842 | I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr); | |
3107bd48 | 6843 | |
ab5c608b BW |
6844 | if (!HAS_PCH_NOP(dev)) |
6845 | cpt_init_clock_gating(dev); | |
1d7aaa0c DV |
6846 | |
6847 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
6848 | } |
6849 | ||
c6beb13e VS |
6850 | static void vlv_init_display_clock_gating(struct drm_i915_private *dev_priv) |
6851 | { | |
6852 | I915_WRITE(DSPCLK_GATE_D, VRHUNIT_CLOCK_GATE_DISABLE); | |
6853 | ||
6854 | /* | |
6855 | * Disable trickle feed and enable pnd deadline calculation | |
6856 | */ | |
6857 | I915_WRITE(MI_ARB_VLV, MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE); | |
6858 | I915_WRITE(CBR1_VLV, 0); | |
6859 | } | |
6860 | ||
1fa61106 | 6861 | static void valleyview_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6862 | { |
6863 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6f1d69b0 | 6864 | |
c6beb13e | 6865 | vlv_init_display_clock_gating(dev_priv); |
6f1d69b0 | 6866 | |
ecdb4eb7 | 6867 | /* WaDisableEarlyCull:vlv */ |
87f8020e JB |
6868 | I915_WRITE(_3D_CHICKEN3, |
6869 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
6870 | ||
ecdb4eb7 | 6871 | /* WaDisableBackToBackFlipFix:vlv */ |
6f1d69b0 ED |
6872 | I915_WRITE(IVB_CHICKEN3, |
6873 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
6874 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
6875 | ||
fad7d36e | 6876 | /* WaPsdDispatchEnable:vlv */ |
ecdb4eb7 | 6877 | /* WaDisablePSDDualDispatchEnable:vlv */ |
12f3382b | 6878 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, |
d3bc0303 JB |
6879 | _MASKED_BIT_ENABLE(GEN7_MAX_PS_THREAD_DEP | |
6880 | GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
12f3382b | 6881 | |
4e04632e AG |
6882 | /* WaDisable_RenderCache_OperationalFlush:vlv */ |
6883 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6884 | ||
ecdb4eb7 | 6885 | /* WaForceL3Serialization:vlv */ |
61939d97 JB |
6886 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
6887 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
6888 | ||
ecdb4eb7 | 6889 | /* WaDisableDopClockGating:vlv */ |
8ab43976 JB |
6890 | I915_WRITE(GEN7_ROW_CHICKEN2, |
6891 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
6892 | ||
ecdb4eb7 | 6893 | /* This is required by WaCatErrorRejectionIssue:vlv */ |
6f1d69b0 ED |
6894 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
6895 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
6896 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
6897 | ||
46680e0a VS |
6898 | gen7_setup_fixed_func_scheduler(dev_priv); |
6899 | ||
3c0edaeb | 6900 | /* |
0f846f81 | 6901 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. |
ecdb4eb7 | 6902 | * This implements the WaDisableRCZUnitClockGating:vlv workaround. |
0f846f81 JB |
6903 | */ |
6904 | I915_WRITE(GEN6_UCGCTL2, | |
3c0edaeb | 6905 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE); |
0f846f81 | 6906 | |
c98f5062 AG |
6907 | /* WaDisableL3Bank2xClockGate:vlv |
6908 | * Disabling L3 clock gating- MMIO 940c[25] = 1 | |
6909 | * Set bit 25, to disable L3_BANK_2x_CLK_GATING */ | |
6910 | I915_WRITE(GEN7_UCGCTL4, | |
6911 | I915_READ(GEN7_UCGCTL4) | GEN7_L3BANK2X_CLOCK_GATE_DISABLE); | |
e3f33d46 | 6912 | |
afd58e79 VS |
6913 | /* |
6914 | * BSpec says this must be set, even though | |
6915 | * WaDisable4x2SubspanOptimization isn't listed for VLV. | |
6916 | */ | |
6b26c86d DV |
6917 | I915_WRITE(CACHE_MODE_1, |
6918 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
7983117f | 6919 | |
da2518f9 VS |
6920 | /* |
6921 | * BSpec recommends 8x4 when MSAA is used, | |
6922 | * however in practice 16x4 seems fastest. | |
6923 | * | |
6924 | * Note that PS/WM thread counts depend on the WIZ hashing | |
6925 | * disable bit, which we don't touch here, but it's good | |
6926 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
6927 | */ | |
6928 | I915_WRITE(GEN7_GT_MODE, | |
6929 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); | |
6930 | ||
031994ee VS |
6931 | /* |
6932 | * WaIncreaseL3CreditsForVLVB0:vlv | |
6933 | * This is the hardware default actually. | |
6934 | */ | |
6935 | I915_WRITE(GEN7_L3SQCREG1, VLV_B0_WA_L3SQCREG1_VALUE); | |
6936 | ||
2d809570 | 6937 | /* |
ecdb4eb7 | 6938 | * WaDisableVLVClockGating_VBIIssue:vlv |
2d809570 JB |
6939 | * Disable clock gating on th GCFG unit to prevent a delay |
6940 | * in the reporting of vblank events. | |
6941 | */ | |
7a0d1eed | 6942 | I915_WRITE(VLV_GUNIT_CLOCK_GATE, GCFG_DIS); |
6f1d69b0 ED |
6943 | } |
6944 | ||
a4565da8 VS |
6945 | static void cherryview_init_clock_gating(struct drm_device *dev) |
6946 | { | |
6947 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6948 | ||
c6beb13e | 6949 | vlv_init_display_clock_gating(dev_priv); |
dd811e70 | 6950 | |
232ce337 VS |
6951 | /* WaVSRefCountFullforceMissDisable:chv */ |
6952 | /* WaDSRefCountFullforceMissDisable:chv */ | |
6953 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
6954 | I915_READ(GEN7_FF_THREAD_MODE) & | |
6955 | ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME)); | |
acea6f95 VS |
6956 | |
6957 | /* WaDisableSemaphoreAndSyncFlipWait:chv */ | |
6958 | I915_WRITE(GEN6_RC_SLEEP_PSMI_CONTROL, | |
6959 | _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); | |
0846697c VS |
6960 | |
6961 | /* WaDisableCSUnitClockGating:chv */ | |
6962 | I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) | | |
6963 | GEN6_CSUNIT_CLOCK_GATE_DISABLE); | |
c631780f VS |
6964 | |
6965 | /* WaDisableSDEUnitClockGating:chv */ | |
6966 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
6967 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
6d50b065 VS |
6968 | |
6969 | /* | |
6970 | * GTT cache may not work with big pages, so if those | |
6971 | * are ever enabled GTT cache may need to be disabled. | |
6972 | */ | |
6973 | I915_WRITE(HSW_GTT_CACHE_EN, GTT_CACHE_EN_ALL); | |
a4565da8 VS |
6974 | } |
6975 | ||
1fa61106 | 6976 | static void g4x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6977 | { |
6978 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6979 | uint32_t dspclk_gate; | |
6980 | ||
6981 | I915_WRITE(RENCLK_GATE_D1, 0); | |
6982 | I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE | | |
6983 | GS_UNIT_CLOCK_GATE_DISABLE | | |
6984 | CL_UNIT_CLOCK_GATE_DISABLE); | |
6985 | I915_WRITE(RAMCLK_GATE_D, 0); | |
6986 | dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE | | |
6987 | OVRUNIT_CLOCK_GATE_DISABLE | | |
6988 | OVCUNIT_CLOCK_GATE_DISABLE; | |
6989 | if (IS_GM45(dev)) | |
6990 | dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE; | |
6991 | I915_WRITE(DSPCLK_GATE_D, dspclk_gate); | |
4358a374 DV |
6992 | |
6993 | /* WaDisableRenderCachePipelinedFlush */ | |
6994 | I915_WRITE(CACHE_MODE_0, | |
6995 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
de1aa629 | 6996 | |
4e04632e AG |
6997 | /* WaDisable_RenderCache_OperationalFlush:g4x */ |
6998 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6999 | ||
0e088b8f | 7000 | g4x_disable_trickle_feed(dev); |
6f1d69b0 ED |
7001 | } |
7002 | ||
1fa61106 | 7003 | static void crestline_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7004 | { |
7005 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7006 | ||
7007 | I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE); | |
7008 | I915_WRITE(RENCLK_GATE_D2, 0); | |
7009 | I915_WRITE(DSPCLK_GATE_D, 0); | |
7010 | I915_WRITE(RAMCLK_GATE_D, 0); | |
7011 | I915_WRITE16(DEUC, 0); | |
20f94967 VS |
7012 | I915_WRITE(MI_ARB_STATE, |
7013 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
4e04632e AG |
7014 | |
7015 | /* WaDisable_RenderCache_OperationalFlush:gen4 */ | |
7016 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6f1d69b0 ED |
7017 | } |
7018 | ||
1fa61106 | 7019 | static void broadwater_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7020 | { |
7021 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7022 | ||
7023 | I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE | | |
7024 | I965_RCC_CLOCK_GATE_DISABLE | | |
7025 | I965_RCPB_CLOCK_GATE_DISABLE | | |
7026 | I965_ISC_CLOCK_GATE_DISABLE | | |
7027 | I965_FBC_CLOCK_GATE_DISABLE); | |
7028 | I915_WRITE(RENCLK_GATE_D2, 0); | |
20f94967 VS |
7029 | I915_WRITE(MI_ARB_STATE, |
7030 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
4e04632e AG |
7031 | |
7032 | /* WaDisable_RenderCache_OperationalFlush:gen4 */ | |
7033 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6f1d69b0 ED |
7034 | } |
7035 | ||
1fa61106 | 7036 | static void gen3_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7037 | { |
7038 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7039 | u32 dstate = I915_READ(D_STATE); | |
7040 | ||
7041 | dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING | | |
7042 | DSTATE_DOT_CLOCK_GATING; | |
7043 | I915_WRITE(D_STATE, dstate); | |
13a86b85 CW |
7044 | |
7045 | if (IS_PINEVIEW(dev)) | |
7046 | I915_WRITE(ECOSKPD, _MASKED_BIT_ENABLE(ECO_GATING_CX_ONLY)); | |
974a3b0f DV |
7047 | |
7048 | /* IIR "flip pending" means done if this bit is set */ | |
7049 | I915_WRITE(ECOSKPD, _MASKED_BIT_DISABLE(ECO_FLIP_DONE)); | |
12fabbcb VS |
7050 | |
7051 | /* interrupts should cause a wake up from C3 */ | |
3299254f | 7052 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_INT_EN)); |
dbb42748 VS |
7053 | |
7054 | /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ | |
7055 | I915_WRITE(MI_ARB_STATE, _MASKED_BIT_ENABLE(MI_ARB_C3_LP_WRITE_ENABLE)); | |
1038392b VS |
7056 | |
7057 | I915_WRITE(MI_ARB_STATE, | |
7058 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
7059 | } |
7060 | ||
1fa61106 | 7061 | static void i85x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7062 | { |
7063 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7064 | ||
7065 | I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE); | |
54e472ae VS |
7066 | |
7067 | /* interrupts should cause a wake up from C3 */ | |
7068 | I915_WRITE(MI_STATE, _MASKED_BIT_ENABLE(MI_AGPBUSY_INT_EN) | | |
7069 | _MASKED_BIT_DISABLE(MI_AGPBUSY_830_MODE)); | |
1038392b VS |
7070 | |
7071 | I915_WRITE(MEM_MODE, | |
7072 | _MASKED_BIT_ENABLE(MEM_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
7073 | } |
7074 | ||
1fa61106 | 7075 | static void i830_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7076 | { |
7077 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7078 | ||
7079 | I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE); | |
1038392b VS |
7080 | |
7081 | I915_WRITE(MEM_MODE, | |
7082 | _MASKED_BIT_ENABLE(MEM_DISPLAY_A_TRICKLE_FEED_DISABLE) | | |
7083 | _MASKED_BIT_ENABLE(MEM_DISPLAY_B_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
7084 | } |
7085 | ||
6f1d69b0 ED |
7086 | void intel_init_clock_gating(struct drm_device *dev) |
7087 | { | |
7088 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7089 | ||
c57e3551 DL |
7090 | if (dev_priv->display.init_clock_gating) |
7091 | dev_priv->display.init_clock_gating(dev); | |
6f1d69b0 ED |
7092 | } |
7093 | ||
7d708ee4 ID |
7094 | void intel_suspend_hw(struct drm_device *dev) |
7095 | { | |
7096 | if (HAS_PCH_LPT(dev)) | |
7097 | lpt_suspend_hw(dev); | |
7098 | } | |
7099 | ||
1fa61106 ED |
7100 | /* Set up chip specific power management-related functions */ |
7101 | void intel_init_pm(struct drm_device *dev) | |
7102 | { | |
7103 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7104 | ||
7ff0ebcc | 7105 | intel_fbc_init(dev_priv); |
1fa61106 | 7106 | |
c921aba8 DV |
7107 | /* For cxsr */ |
7108 | if (IS_PINEVIEW(dev)) | |
7109 | i915_pineview_get_mem_freq(dev); | |
7110 | else if (IS_GEN5(dev)) | |
7111 | i915_ironlake_get_mem_freq(dev); | |
7112 | ||
1fa61106 | 7113 | /* For FIFO watermark updates */ |
f5ed50cb | 7114 | if (INTEL_INFO(dev)->gen >= 9) { |
2af30a5c PB |
7115 | skl_setup_wm_latency(dev); |
7116 | ||
a82abe43 ID |
7117 | if (IS_BROXTON(dev)) |
7118 | dev_priv->display.init_clock_gating = | |
7119 | bxt_init_clock_gating; | |
2d41c0b5 | 7120 | dev_priv->display.update_wm = skl_update_wm; |
c83155a6 | 7121 | } else if (HAS_PCH_SPLIT(dev)) { |
fa50ad61 | 7122 | ilk_setup_wm_latency(dev); |
53615a5e | 7123 | |
bd602544 VS |
7124 | if ((IS_GEN5(dev) && dev_priv->wm.pri_latency[1] && |
7125 | dev_priv->wm.spr_latency[1] && dev_priv->wm.cur_latency[1]) || | |
7126 | (!IS_GEN5(dev) && dev_priv->wm.pri_latency[0] && | |
7127 | dev_priv->wm.spr_latency[0] && dev_priv->wm.cur_latency[0])) { | |
86c8bbbe | 7128 | dev_priv->display.compute_pipe_wm = ilk_compute_pipe_wm; |
ed4a6a7c MR |
7129 | dev_priv->display.compute_intermediate_wm = |
7130 | ilk_compute_intermediate_wm; | |
7131 | dev_priv->display.initial_watermarks = | |
7132 | ilk_initial_watermarks; | |
7133 | dev_priv->display.optimize_watermarks = | |
7134 | ilk_optimize_watermarks; | |
bd602544 VS |
7135 | } else { |
7136 | DRM_DEBUG_KMS("Failed to read display plane latency. " | |
7137 | "Disable CxSR\n"); | |
7138 | } | |
7139 | ||
7140 | if (IS_GEN5(dev)) | |
1fa61106 | 7141 | dev_priv->display.init_clock_gating = ironlake_init_clock_gating; |
bd602544 | 7142 | else if (IS_GEN6(dev)) |
1fa61106 | 7143 | dev_priv->display.init_clock_gating = gen6_init_clock_gating; |
bd602544 | 7144 | else if (IS_IVYBRIDGE(dev)) |
1fa61106 | 7145 | dev_priv->display.init_clock_gating = ivybridge_init_clock_gating; |
bd602544 | 7146 | else if (IS_HASWELL(dev)) |
cad2a2d7 | 7147 | dev_priv->display.init_clock_gating = haswell_init_clock_gating; |
bd602544 | 7148 | else if (INTEL_INFO(dev)->gen == 8) |
47c2bd97 | 7149 | dev_priv->display.init_clock_gating = broadwell_init_clock_gating; |
a4565da8 | 7150 | } else if (IS_CHERRYVIEW(dev)) { |
262cd2e1 VS |
7151 | vlv_setup_wm_latency(dev); |
7152 | ||
7153 | dev_priv->display.update_wm = vlv_update_wm; | |
a4565da8 VS |
7154 | dev_priv->display.init_clock_gating = |
7155 | cherryview_init_clock_gating; | |
1fa61106 | 7156 | } else if (IS_VALLEYVIEW(dev)) { |
26e1fe4f VS |
7157 | vlv_setup_wm_latency(dev); |
7158 | ||
7159 | dev_priv->display.update_wm = vlv_update_wm; | |
1fa61106 ED |
7160 | dev_priv->display.init_clock_gating = |
7161 | valleyview_init_clock_gating; | |
1fa61106 ED |
7162 | } else if (IS_PINEVIEW(dev)) { |
7163 | if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev), | |
7164 | dev_priv->is_ddr3, | |
7165 | dev_priv->fsb_freq, | |
7166 | dev_priv->mem_freq)) { | |
7167 | DRM_INFO("failed to find known CxSR latency " | |
7168 | "(found ddr%s fsb freq %d, mem freq %d), " | |
7169 | "disabling CxSR\n", | |
7170 | (dev_priv->is_ddr3 == 1) ? "3" : "2", | |
7171 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
7172 | /* Disable CxSR and never update its watermark again */ | |
5209b1f4 | 7173 | intel_set_memory_cxsr(dev_priv, false); |
1fa61106 ED |
7174 | dev_priv->display.update_wm = NULL; |
7175 | } else | |
7176 | dev_priv->display.update_wm = pineview_update_wm; | |
7177 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; | |
7178 | } else if (IS_G4X(dev)) { | |
7179 | dev_priv->display.update_wm = g4x_update_wm; | |
7180 | dev_priv->display.init_clock_gating = g4x_init_clock_gating; | |
7181 | } else if (IS_GEN4(dev)) { | |
7182 | dev_priv->display.update_wm = i965_update_wm; | |
7183 | if (IS_CRESTLINE(dev)) | |
7184 | dev_priv->display.init_clock_gating = crestline_init_clock_gating; | |
7185 | else if (IS_BROADWATER(dev)) | |
7186 | dev_priv->display.init_clock_gating = broadwater_init_clock_gating; | |
7187 | } else if (IS_GEN3(dev)) { | |
7188 | dev_priv->display.update_wm = i9xx_update_wm; | |
7189 | dev_priv->display.get_fifo_size = i9xx_get_fifo_size; | |
7190 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; | |
feb56b93 DV |
7191 | } else if (IS_GEN2(dev)) { |
7192 | if (INTEL_INFO(dev)->num_pipes == 1) { | |
7193 | dev_priv->display.update_wm = i845_update_wm; | |
1fa61106 | 7194 | dev_priv->display.get_fifo_size = i845_get_fifo_size; |
feb56b93 DV |
7195 | } else { |
7196 | dev_priv->display.update_wm = i9xx_update_wm; | |
1fa61106 | 7197 | dev_priv->display.get_fifo_size = i830_get_fifo_size; |
feb56b93 DV |
7198 | } |
7199 | ||
7200 | if (IS_I85X(dev) || IS_I865G(dev)) | |
7201 | dev_priv->display.init_clock_gating = i85x_init_clock_gating; | |
7202 | else | |
7203 | dev_priv->display.init_clock_gating = i830_init_clock_gating; | |
7204 | } else { | |
7205 | DRM_ERROR("unexpected fall-through in intel_init_pm\n"); | |
1fa61106 ED |
7206 | } |
7207 | } | |
7208 | ||
151a49d0 | 7209 | int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val) |
42c0526c | 7210 | { |
4fc688ce | 7211 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c BW |
7212 | |
7213 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
7214 | DRM_DEBUG_DRIVER("warning: pcode (read) mailbox access failed\n"); | |
7215 | return -EAGAIN; | |
7216 | } | |
7217 | ||
7218 | I915_WRITE(GEN6_PCODE_DATA, *val); | |
dddab346 | 7219 | I915_WRITE(GEN6_PCODE_DATA1, 0); |
42c0526c BW |
7220 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); |
7221 | ||
7222 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, | |
7223 | 500)) { | |
7224 | DRM_ERROR("timeout waiting for pcode read (%d) to finish\n", mbox); | |
7225 | return -ETIMEDOUT; | |
7226 | } | |
7227 | ||
7228 | *val = I915_READ(GEN6_PCODE_DATA); | |
7229 | I915_WRITE(GEN6_PCODE_DATA, 0); | |
7230 | ||
7231 | return 0; | |
7232 | } | |
7233 | ||
151a49d0 | 7234 | int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u32 mbox, u32 val) |
42c0526c | 7235 | { |
4fc688ce | 7236 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c BW |
7237 | |
7238 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
7239 | DRM_DEBUG_DRIVER("warning: pcode (write) mailbox access failed\n"); | |
7240 | return -EAGAIN; | |
7241 | } | |
7242 | ||
7243 | I915_WRITE(GEN6_PCODE_DATA, val); | |
7244 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); | |
7245 | ||
7246 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, | |
7247 | 500)) { | |
7248 | DRM_ERROR("timeout waiting for pcode write (%d) to finish\n", mbox); | |
7249 | return -ETIMEDOUT; | |
7250 | } | |
7251 | ||
7252 | I915_WRITE(GEN6_PCODE_DATA, 0); | |
7253 | ||
7254 | return 0; | |
7255 | } | |
a0e4e199 | 7256 | |
dd06f88c | 7257 | static int vlv_gpu_freq_div(unsigned int czclk_freq) |
855ba3be | 7258 | { |
dd06f88c VS |
7259 | switch (czclk_freq) { |
7260 | case 200: | |
7261 | return 10; | |
7262 | case 267: | |
7263 | return 12; | |
7264 | case 320: | |
7265 | case 333: | |
dd06f88c | 7266 | return 16; |
ab3fb157 VS |
7267 | case 400: |
7268 | return 20; | |
855ba3be JB |
7269 | default: |
7270 | return -1; | |
7271 | } | |
dd06f88c | 7272 | } |
855ba3be | 7273 | |
dd06f88c VS |
7274 | static int byt_gpu_freq(struct drm_i915_private *dev_priv, int val) |
7275 | { | |
bfa7df01 | 7276 | int div, czclk_freq = DIV_ROUND_CLOSEST(dev_priv->czclk_freq, 1000); |
dd06f88c VS |
7277 | |
7278 | div = vlv_gpu_freq_div(czclk_freq); | |
7279 | if (div < 0) | |
7280 | return div; | |
7281 | ||
7282 | return DIV_ROUND_CLOSEST(czclk_freq * (val + 6 - 0xbd), div); | |
855ba3be JB |
7283 | } |
7284 | ||
b55dd647 | 7285 | static int byt_freq_opcode(struct drm_i915_private *dev_priv, int val) |
855ba3be | 7286 | { |
bfa7df01 | 7287 | int mul, czclk_freq = DIV_ROUND_CLOSEST(dev_priv->czclk_freq, 1000); |
855ba3be | 7288 | |
dd06f88c VS |
7289 | mul = vlv_gpu_freq_div(czclk_freq); |
7290 | if (mul < 0) | |
7291 | return mul; | |
855ba3be | 7292 | |
dd06f88c | 7293 | return DIV_ROUND_CLOSEST(mul * val, czclk_freq) + 0xbd - 6; |
855ba3be JB |
7294 | } |
7295 | ||
b55dd647 | 7296 | static int chv_gpu_freq(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 7297 | { |
bfa7df01 | 7298 | int div, czclk_freq = DIV_ROUND_CLOSEST(dev_priv->czclk_freq, 1000); |
22b1b2f8 | 7299 | |
9c06f674 | 7300 | div = vlv_gpu_freq_div(czclk_freq); |
dd06f88c VS |
7301 | if (div < 0) |
7302 | return div; | |
9c06f674 | 7303 | div /= 2; |
22b1b2f8 | 7304 | |
dd06f88c | 7305 | return DIV_ROUND_CLOSEST(czclk_freq * val, 2 * div) / 2; |
22b1b2f8 D |
7306 | } |
7307 | ||
b55dd647 | 7308 | static int chv_freq_opcode(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 7309 | { |
bfa7df01 | 7310 | int mul, czclk_freq = DIV_ROUND_CLOSEST(dev_priv->czclk_freq, 1000); |
22b1b2f8 | 7311 | |
9c06f674 | 7312 | mul = vlv_gpu_freq_div(czclk_freq); |
dd06f88c VS |
7313 | if (mul < 0) |
7314 | return mul; | |
9c06f674 | 7315 | mul /= 2; |
22b1b2f8 | 7316 | |
1c14762d | 7317 | /* CHV needs even values */ |
dd06f88c | 7318 | return DIV_ROUND_CLOSEST(val * 2 * mul, czclk_freq) * 2; |
22b1b2f8 D |
7319 | } |
7320 | ||
616bc820 | 7321 | int intel_gpu_freq(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 7322 | { |
80b6dda4 | 7323 | if (IS_GEN9(dev_priv->dev)) |
500a3d2e MK |
7324 | return DIV_ROUND_CLOSEST(val * GT_FREQUENCY_MULTIPLIER, |
7325 | GEN9_FREQ_SCALER); | |
80b6dda4 | 7326 | else if (IS_CHERRYVIEW(dev_priv->dev)) |
616bc820 | 7327 | return chv_gpu_freq(dev_priv, val); |
22b1b2f8 | 7328 | else if (IS_VALLEYVIEW(dev_priv->dev)) |
616bc820 VS |
7329 | return byt_gpu_freq(dev_priv, val); |
7330 | else | |
7331 | return val * GT_FREQUENCY_MULTIPLIER; | |
22b1b2f8 D |
7332 | } |
7333 | ||
616bc820 VS |
7334 | int intel_freq_opcode(struct drm_i915_private *dev_priv, int val) |
7335 | { | |
80b6dda4 | 7336 | if (IS_GEN9(dev_priv->dev)) |
500a3d2e MK |
7337 | return DIV_ROUND_CLOSEST(val * GEN9_FREQ_SCALER, |
7338 | GT_FREQUENCY_MULTIPLIER); | |
80b6dda4 | 7339 | else if (IS_CHERRYVIEW(dev_priv->dev)) |
616bc820 | 7340 | return chv_freq_opcode(dev_priv, val); |
22b1b2f8 | 7341 | else if (IS_VALLEYVIEW(dev_priv->dev)) |
616bc820 VS |
7342 | return byt_freq_opcode(dev_priv, val); |
7343 | else | |
500a3d2e | 7344 | return DIV_ROUND_CLOSEST(val, GT_FREQUENCY_MULTIPLIER); |
616bc820 | 7345 | } |
22b1b2f8 | 7346 | |
6ad790c0 CW |
7347 | struct request_boost { |
7348 | struct work_struct work; | |
eed29a5b | 7349 | struct drm_i915_gem_request *req; |
6ad790c0 CW |
7350 | }; |
7351 | ||
7352 | static void __intel_rps_boost_work(struct work_struct *work) | |
7353 | { | |
7354 | struct request_boost *boost = container_of(work, struct request_boost, work); | |
e61b9958 | 7355 | struct drm_i915_gem_request *req = boost->req; |
6ad790c0 | 7356 | |
e61b9958 CW |
7357 | if (!i915_gem_request_completed(req, true)) |
7358 | gen6_rps_boost(to_i915(req->ring->dev), NULL, | |
7359 | req->emitted_jiffies); | |
6ad790c0 | 7360 | |
e61b9958 | 7361 | i915_gem_request_unreference__unlocked(req); |
6ad790c0 CW |
7362 | kfree(boost); |
7363 | } | |
7364 | ||
7365 | void intel_queue_rps_boost_for_request(struct drm_device *dev, | |
eed29a5b | 7366 | struct drm_i915_gem_request *req) |
6ad790c0 CW |
7367 | { |
7368 | struct request_boost *boost; | |
7369 | ||
eed29a5b | 7370 | if (req == NULL || INTEL_INFO(dev)->gen < 6) |
6ad790c0 CW |
7371 | return; |
7372 | ||
e61b9958 CW |
7373 | if (i915_gem_request_completed(req, true)) |
7374 | return; | |
7375 | ||
6ad790c0 CW |
7376 | boost = kmalloc(sizeof(*boost), GFP_ATOMIC); |
7377 | if (boost == NULL) | |
7378 | return; | |
7379 | ||
eed29a5b DV |
7380 | i915_gem_request_reference(req); |
7381 | boost->req = req; | |
6ad790c0 CW |
7382 | |
7383 | INIT_WORK(&boost->work, __intel_rps_boost_work); | |
7384 | queue_work(to_i915(dev)->wq, &boost->work); | |
7385 | } | |
7386 | ||
f742a552 | 7387 | void intel_pm_setup(struct drm_device *dev) |
907b28c5 CW |
7388 | { |
7389 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7390 | ||
f742a552 | 7391 | mutex_init(&dev_priv->rps.hw_lock); |
8d3afd7d | 7392 | spin_lock_init(&dev_priv->rps.client_lock); |
f742a552 | 7393 | |
907b28c5 CW |
7394 | INIT_DELAYED_WORK(&dev_priv->rps.delayed_resume_work, |
7395 | intel_gen6_powersave_work); | |
1854d5ca | 7396 | INIT_LIST_HEAD(&dev_priv->rps.clients); |
2e1b8730 CW |
7397 | INIT_LIST_HEAD(&dev_priv->rps.semaphores.link); |
7398 | INIT_LIST_HEAD(&dev_priv->rps.mmioflips.link); | |
5d584b2e | 7399 | |
33688d95 | 7400 | dev_priv->pm.suspended = false; |
1f814dac | 7401 | atomic_set(&dev_priv->pm.wakeref_count, 0); |
2b19efeb | 7402 | atomic_set(&dev_priv->pm.atomic_seq, 0); |
907b28c5 | 7403 | } |