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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 | ||
dc00b6a0 DV |
61 | /* See Bspec note for PSR2_CTL bit 31, Wa#828:bxt */ |
62 | I915_WRITE(CHICKEN_PAR1_1, | |
63 | I915_READ(CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP); | |
64 | ||
a7546159 NH |
65 | /* WaDisableSDEUnitClockGating:bxt */ |
66 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
67 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
68 | ||
32608ca2 ID |
69 | /* |
70 | * FIXME: | |
868434c5 | 71 | * GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ applies on 3x6 GT SKUs only. |
32608ca2 | 72 | */ |
32608ca2 | 73 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | |
868434c5 | 74 | GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ); |
d965e7ac ID |
75 | |
76 | /* | |
77 | * Wa: Backlight PWM may stop in the asserted state, causing backlight | |
78 | * to stay fully on. | |
79 | */ | |
80 | if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER)) | |
81 | I915_WRITE(GEN9_CLKGATE_DIS_0, I915_READ(GEN9_CLKGATE_DIS_0) | | |
82 | PWM1_GATING_DIS | PWM2_GATING_DIS); | |
a82abe43 ID |
83 | } |
84 | ||
c921aba8 DV |
85 | static void i915_pineview_get_mem_freq(struct drm_device *dev) |
86 | { | |
50227e1c | 87 | struct drm_i915_private *dev_priv = dev->dev_private; |
c921aba8 DV |
88 | u32 tmp; |
89 | ||
90 | tmp = I915_READ(CLKCFG); | |
91 | ||
92 | switch (tmp & CLKCFG_FSB_MASK) { | |
93 | case CLKCFG_FSB_533: | |
94 | dev_priv->fsb_freq = 533; /* 133*4 */ | |
95 | break; | |
96 | case CLKCFG_FSB_800: | |
97 | dev_priv->fsb_freq = 800; /* 200*4 */ | |
98 | break; | |
99 | case CLKCFG_FSB_667: | |
100 | dev_priv->fsb_freq = 667; /* 167*4 */ | |
101 | break; | |
102 | case CLKCFG_FSB_400: | |
103 | dev_priv->fsb_freq = 400; /* 100*4 */ | |
104 | break; | |
105 | } | |
106 | ||
107 | switch (tmp & CLKCFG_MEM_MASK) { | |
108 | case CLKCFG_MEM_533: | |
109 | dev_priv->mem_freq = 533; | |
110 | break; | |
111 | case CLKCFG_MEM_667: | |
112 | dev_priv->mem_freq = 667; | |
113 | break; | |
114 | case CLKCFG_MEM_800: | |
115 | dev_priv->mem_freq = 800; | |
116 | break; | |
117 | } | |
118 | ||
119 | /* detect pineview DDR3 setting */ | |
120 | tmp = I915_READ(CSHRDDR3CTL); | |
121 | dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0; | |
122 | } | |
123 | ||
124 | static void i915_ironlake_get_mem_freq(struct drm_device *dev) | |
125 | { | |
50227e1c | 126 | struct drm_i915_private *dev_priv = dev->dev_private; |
c921aba8 DV |
127 | u16 ddrpll, csipll; |
128 | ||
129 | ddrpll = I915_READ16(DDRMPLL1); | |
130 | csipll = I915_READ16(CSIPLL0); | |
131 | ||
132 | switch (ddrpll & 0xff) { | |
133 | case 0xc: | |
134 | dev_priv->mem_freq = 800; | |
135 | break; | |
136 | case 0x10: | |
137 | dev_priv->mem_freq = 1066; | |
138 | break; | |
139 | case 0x14: | |
140 | dev_priv->mem_freq = 1333; | |
141 | break; | |
142 | case 0x18: | |
143 | dev_priv->mem_freq = 1600; | |
144 | break; | |
145 | default: | |
146 | DRM_DEBUG_DRIVER("unknown memory frequency 0x%02x\n", | |
147 | ddrpll & 0xff); | |
148 | dev_priv->mem_freq = 0; | |
149 | break; | |
150 | } | |
151 | ||
20e4d407 | 152 | dev_priv->ips.r_t = dev_priv->mem_freq; |
c921aba8 DV |
153 | |
154 | switch (csipll & 0x3ff) { | |
155 | case 0x00c: | |
156 | dev_priv->fsb_freq = 3200; | |
157 | break; | |
158 | case 0x00e: | |
159 | dev_priv->fsb_freq = 3733; | |
160 | break; | |
161 | case 0x010: | |
162 | dev_priv->fsb_freq = 4266; | |
163 | break; | |
164 | case 0x012: | |
165 | dev_priv->fsb_freq = 4800; | |
166 | break; | |
167 | case 0x014: | |
168 | dev_priv->fsb_freq = 5333; | |
169 | break; | |
170 | case 0x016: | |
171 | dev_priv->fsb_freq = 5866; | |
172 | break; | |
173 | case 0x018: | |
174 | dev_priv->fsb_freq = 6400; | |
175 | break; | |
176 | default: | |
177 | DRM_DEBUG_DRIVER("unknown fsb frequency 0x%04x\n", | |
178 | csipll & 0x3ff); | |
179 | dev_priv->fsb_freq = 0; | |
180 | break; | |
181 | } | |
182 | ||
183 | if (dev_priv->fsb_freq == 3200) { | |
20e4d407 | 184 | dev_priv->ips.c_m = 0; |
c921aba8 | 185 | } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) { |
20e4d407 | 186 | dev_priv->ips.c_m = 1; |
c921aba8 | 187 | } else { |
20e4d407 | 188 | dev_priv->ips.c_m = 2; |
c921aba8 DV |
189 | } |
190 | } | |
191 | ||
b445e3b0 ED |
192 | static const struct cxsr_latency cxsr_latency_table[] = { |
193 | {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */ | |
194 | {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */ | |
195 | {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */ | |
196 | {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */ | |
197 | {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */ | |
198 | ||
199 | {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */ | |
200 | {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */ | |
201 | {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */ | |
202 | {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */ | |
203 | {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */ | |
204 | ||
205 | {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */ | |
206 | {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */ | |
207 | {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */ | |
208 | {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */ | |
209 | {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */ | |
210 | ||
211 | {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */ | |
212 | {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */ | |
213 | {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */ | |
214 | {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */ | |
215 | {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */ | |
216 | ||
217 | {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */ | |
218 | {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */ | |
219 | {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */ | |
220 | {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */ | |
221 | {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */ | |
222 | ||
223 | {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */ | |
224 | {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */ | |
225 | {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */ | |
226 | {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */ | |
227 | {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */ | |
228 | }; | |
229 | ||
63c62275 | 230 | static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, |
b445e3b0 ED |
231 | int is_ddr3, |
232 | int fsb, | |
233 | int mem) | |
234 | { | |
235 | const struct cxsr_latency *latency; | |
236 | int i; | |
237 | ||
238 | if (fsb == 0 || mem == 0) | |
239 | return NULL; | |
240 | ||
241 | for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) { | |
242 | latency = &cxsr_latency_table[i]; | |
243 | if (is_desktop == latency->is_desktop && | |
244 | is_ddr3 == latency->is_ddr3 && | |
245 | fsb == latency->fsb_freq && mem == latency->mem_freq) | |
246 | return latency; | |
247 | } | |
248 | ||
249 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
250 | ||
251 | return NULL; | |
252 | } | |
253 | ||
fc1ac8de VS |
254 | static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable) |
255 | { | |
256 | u32 val; | |
257 | ||
258 | mutex_lock(&dev_priv->rps.hw_lock); | |
259 | ||
260 | val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); | |
261 | if (enable) | |
262 | val &= ~FORCE_DDR_HIGH_FREQ; | |
263 | else | |
264 | val |= FORCE_DDR_HIGH_FREQ; | |
265 | val &= ~FORCE_DDR_LOW_FREQ; | |
266 | val |= FORCE_DDR_FREQ_REQ_ACK; | |
267 | vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val); | |
268 | ||
269 | if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) & | |
270 | FORCE_DDR_FREQ_REQ_ACK) == 0, 3)) | |
271 | DRM_ERROR("timed out waiting for Punit DDR DVFS request\n"); | |
272 | ||
273 | mutex_unlock(&dev_priv->rps.hw_lock); | |
274 | } | |
275 | ||
cfb41411 VS |
276 | static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable) |
277 | { | |
278 | u32 val; | |
279 | ||
280 | mutex_lock(&dev_priv->rps.hw_lock); | |
281 | ||
282 | val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ); | |
283 | if (enable) | |
284 | val |= DSP_MAXFIFO_PM5_ENABLE; | |
285 | else | |
286 | val &= ~DSP_MAXFIFO_PM5_ENABLE; | |
287 | vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val); | |
288 | ||
289 | mutex_unlock(&dev_priv->rps.hw_lock); | |
290 | } | |
291 | ||
f4998963 VS |
292 | #define FW_WM(value, plane) \ |
293 | (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK) | |
294 | ||
5209b1f4 | 295 | void intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable) |
b445e3b0 | 296 | { |
5209b1f4 ID |
297 | struct drm_device *dev = dev_priv->dev; |
298 | u32 val; | |
b445e3b0 | 299 | |
666a4537 | 300 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { |
5209b1f4 | 301 | I915_WRITE(FW_BLC_SELF_VLV, enable ? FW_CSPWRDWNEN : 0); |
a7a6c498 | 302 | POSTING_READ(FW_BLC_SELF_VLV); |
852eb00d | 303 | dev_priv->wm.vlv.cxsr = enable; |
5209b1f4 ID |
304 | } else if (IS_G4X(dev) || IS_CRESTLINE(dev)) { |
305 | I915_WRITE(FW_BLC_SELF, enable ? FW_BLC_SELF_EN : 0); | |
a7a6c498 | 306 | POSTING_READ(FW_BLC_SELF); |
5209b1f4 ID |
307 | } else if (IS_PINEVIEW(dev)) { |
308 | val = I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN; | |
309 | val |= enable ? PINEVIEW_SELF_REFRESH_EN : 0; | |
310 | I915_WRITE(DSPFW3, val); | |
a7a6c498 | 311 | POSTING_READ(DSPFW3); |
5209b1f4 ID |
312 | } else if (IS_I945G(dev) || IS_I945GM(dev)) { |
313 | val = enable ? _MASKED_BIT_ENABLE(FW_BLC_SELF_EN) : | |
314 | _MASKED_BIT_DISABLE(FW_BLC_SELF_EN); | |
315 | I915_WRITE(FW_BLC_SELF, val); | |
a7a6c498 | 316 | POSTING_READ(FW_BLC_SELF); |
5209b1f4 ID |
317 | } else if (IS_I915GM(dev)) { |
318 | val = enable ? _MASKED_BIT_ENABLE(INSTPM_SELF_EN) : | |
319 | _MASKED_BIT_DISABLE(INSTPM_SELF_EN); | |
320 | I915_WRITE(INSTPM, val); | |
a7a6c498 | 321 | POSTING_READ(INSTPM); |
5209b1f4 ID |
322 | } else { |
323 | return; | |
324 | } | |
b445e3b0 | 325 | |
5209b1f4 ID |
326 | DRM_DEBUG_KMS("memory self-refresh is %s\n", |
327 | enable ? "enabled" : "disabled"); | |
b445e3b0 ED |
328 | } |
329 | ||
fc1ac8de | 330 | |
b445e3b0 ED |
331 | /* |
332 | * Latency for FIFO fetches is dependent on several factors: | |
333 | * - memory configuration (speed, channels) | |
334 | * - chipset | |
335 | * - current MCH state | |
336 | * It can be fairly high in some situations, so here we assume a fairly | |
337 | * pessimal value. It's a tradeoff between extra memory fetches (if we | |
338 | * set this value too high, the FIFO will fetch frequently to stay full) | |
339 | * and power consumption (set it too low to save power and we might see | |
340 | * FIFO underruns and display "flicker"). | |
341 | * | |
342 | * A value of 5us seems to be a good balance; safe for very low end | |
343 | * platforms but not overly aggressive on lower latency configs. | |
344 | */ | |
5aef6003 | 345 | static const int pessimal_latency_ns = 5000; |
b445e3b0 | 346 | |
b5004720 VS |
347 | #define VLV_FIFO_START(dsparb, dsparb2, lo_shift, hi_shift) \ |
348 | ((((dsparb) >> (lo_shift)) & 0xff) | ((((dsparb2) >> (hi_shift)) & 0x1) << 8)) | |
349 | ||
350 | static int vlv_get_fifo_size(struct drm_device *dev, | |
351 | enum pipe pipe, int plane) | |
352 | { | |
353 | struct drm_i915_private *dev_priv = dev->dev_private; | |
354 | int sprite0_start, sprite1_start, size; | |
355 | ||
356 | switch (pipe) { | |
357 | uint32_t dsparb, dsparb2, dsparb3; | |
358 | case PIPE_A: | |
359 | dsparb = I915_READ(DSPARB); | |
360 | dsparb2 = I915_READ(DSPARB2); | |
361 | sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 0, 0); | |
362 | sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 8, 4); | |
363 | break; | |
364 | case PIPE_B: | |
365 | dsparb = I915_READ(DSPARB); | |
366 | dsparb2 = I915_READ(DSPARB2); | |
367 | sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 16, 8); | |
368 | sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 24, 12); | |
369 | break; | |
370 | case PIPE_C: | |
371 | dsparb2 = I915_READ(DSPARB2); | |
372 | dsparb3 = I915_READ(DSPARB3); | |
373 | sprite0_start = VLV_FIFO_START(dsparb3, dsparb2, 0, 16); | |
374 | sprite1_start = VLV_FIFO_START(dsparb3, dsparb2, 8, 20); | |
375 | break; | |
376 | default: | |
377 | return 0; | |
378 | } | |
379 | ||
380 | switch (plane) { | |
381 | case 0: | |
382 | size = sprite0_start; | |
383 | break; | |
384 | case 1: | |
385 | size = sprite1_start - sprite0_start; | |
386 | break; | |
387 | case 2: | |
388 | size = 512 - 1 - sprite1_start; | |
389 | break; | |
390 | default: | |
391 | return 0; | |
392 | } | |
393 | ||
394 | DRM_DEBUG_KMS("Pipe %c %s %c FIFO size: %d\n", | |
395 | pipe_name(pipe), plane == 0 ? "primary" : "sprite", | |
396 | plane == 0 ? plane_name(pipe) : sprite_name(pipe, plane - 1), | |
397 | size); | |
398 | ||
399 | return size; | |
400 | } | |
401 | ||
1fa61106 | 402 | static int i9xx_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
403 | { |
404 | struct drm_i915_private *dev_priv = dev->dev_private; | |
405 | uint32_t dsparb = I915_READ(DSPARB); | |
406 | int size; | |
407 | ||
408 | size = dsparb & 0x7f; | |
409 | if (plane) | |
410 | size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size; | |
411 | ||
412 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
413 | plane ? "B" : "A", size); | |
414 | ||
415 | return size; | |
416 | } | |
417 | ||
feb56b93 | 418 | static int i830_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
419 | { |
420 | struct drm_i915_private *dev_priv = dev->dev_private; | |
421 | uint32_t dsparb = I915_READ(DSPARB); | |
422 | int size; | |
423 | ||
424 | size = dsparb & 0x1ff; | |
425 | if (plane) | |
426 | size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size; | |
427 | size >>= 1; /* Convert to cachelines */ | |
428 | ||
429 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
430 | plane ? "B" : "A", size); | |
431 | ||
432 | return size; | |
433 | } | |
434 | ||
1fa61106 | 435 | static int i845_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
436 | { |
437 | struct drm_i915_private *dev_priv = dev->dev_private; | |
438 | uint32_t dsparb = I915_READ(DSPARB); | |
439 | int size; | |
440 | ||
441 | size = dsparb & 0x7f; | |
442 | size >>= 2; /* Convert to cachelines */ | |
443 | ||
444 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
445 | plane ? "B" : "A", | |
446 | size); | |
447 | ||
448 | return size; | |
449 | } | |
450 | ||
b445e3b0 ED |
451 | /* Pineview has different values for various configs */ |
452 | static const struct intel_watermark_params pineview_display_wm = { | |
e0f0273e VS |
453 | .fifo_size = PINEVIEW_DISPLAY_FIFO, |
454 | .max_wm = PINEVIEW_MAX_WM, | |
455 | .default_wm = PINEVIEW_DFT_WM, | |
456 | .guard_size = PINEVIEW_GUARD_WM, | |
457 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
458 | }; |
459 | static const struct intel_watermark_params pineview_display_hplloff_wm = { | |
e0f0273e VS |
460 | .fifo_size = PINEVIEW_DISPLAY_FIFO, |
461 | .max_wm = PINEVIEW_MAX_WM, | |
462 | .default_wm = PINEVIEW_DFT_HPLLOFF_WM, | |
463 | .guard_size = PINEVIEW_GUARD_WM, | |
464 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
465 | }; |
466 | static const struct intel_watermark_params pineview_cursor_wm = { | |
e0f0273e VS |
467 | .fifo_size = PINEVIEW_CURSOR_FIFO, |
468 | .max_wm = PINEVIEW_CURSOR_MAX_WM, | |
469 | .default_wm = PINEVIEW_CURSOR_DFT_WM, | |
470 | .guard_size = PINEVIEW_CURSOR_GUARD_WM, | |
471 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
472 | }; |
473 | static const struct intel_watermark_params pineview_cursor_hplloff_wm = { | |
e0f0273e VS |
474 | .fifo_size = PINEVIEW_CURSOR_FIFO, |
475 | .max_wm = PINEVIEW_CURSOR_MAX_WM, | |
476 | .default_wm = PINEVIEW_CURSOR_DFT_WM, | |
477 | .guard_size = PINEVIEW_CURSOR_GUARD_WM, | |
478 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
479 | }; |
480 | static const struct intel_watermark_params g4x_wm_info = { | |
e0f0273e VS |
481 | .fifo_size = G4X_FIFO_SIZE, |
482 | .max_wm = G4X_MAX_WM, | |
483 | .default_wm = G4X_MAX_WM, | |
484 | .guard_size = 2, | |
485 | .cacheline_size = G4X_FIFO_LINE_SIZE, | |
b445e3b0 ED |
486 | }; |
487 | static const struct intel_watermark_params g4x_cursor_wm_info = { | |
e0f0273e VS |
488 | .fifo_size = I965_CURSOR_FIFO, |
489 | .max_wm = I965_CURSOR_MAX_WM, | |
490 | .default_wm = I965_CURSOR_DFT_WM, | |
491 | .guard_size = 2, | |
492 | .cacheline_size = G4X_FIFO_LINE_SIZE, | |
b445e3b0 | 493 | }; |
b445e3b0 | 494 | static const struct intel_watermark_params i965_cursor_wm_info = { |
e0f0273e VS |
495 | .fifo_size = I965_CURSOR_FIFO, |
496 | .max_wm = I965_CURSOR_MAX_WM, | |
497 | .default_wm = I965_CURSOR_DFT_WM, | |
498 | .guard_size = 2, | |
499 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 ED |
500 | }; |
501 | static const struct intel_watermark_params i945_wm_info = { | |
e0f0273e VS |
502 | .fifo_size = I945_FIFO_SIZE, |
503 | .max_wm = I915_MAX_WM, | |
504 | .default_wm = 1, | |
505 | .guard_size = 2, | |
506 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 ED |
507 | }; |
508 | static const struct intel_watermark_params i915_wm_info = { | |
e0f0273e VS |
509 | .fifo_size = I915_FIFO_SIZE, |
510 | .max_wm = I915_MAX_WM, | |
511 | .default_wm = 1, | |
512 | .guard_size = 2, | |
513 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 | 514 | }; |
9d539105 | 515 | static const struct intel_watermark_params i830_a_wm_info = { |
e0f0273e VS |
516 | .fifo_size = I855GM_FIFO_SIZE, |
517 | .max_wm = I915_MAX_WM, | |
518 | .default_wm = 1, | |
519 | .guard_size = 2, | |
520 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
b445e3b0 | 521 | }; |
9d539105 VS |
522 | static const struct intel_watermark_params i830_bc_wm_info = { |
523 | .fifo_size = I855GM_FIFO_SIZE, | |
524 | .max_wm = I915_MAX_WM/2, | |
525 | .default_wm = 1, | |
526 | .guard_size = 2, | |
527 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
528 | }; | |
feb56b93 | 529 | static const struct intel_watermark_params i845_wm_info = { |
e0f0273e VS |
530 | .fifo_size = I830_FIFO_SIZE, |
531 | .max_wm = I915_MAX_WM, | |
532 | .default_wm = 1, | |
533 | .guard_size = 2, | |
534 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
b445e3b0 ED |
535 | }; |
536 | ||
b445e3b0 ED |
537 | /** |
538 | * intel_calculate_wm - calculate watermark level | |
539 | * @clock_in_khz: pixel clock | |
540 | * @wm: chip FIFO params | |
ac484963 | 541 | * @cpp: bytes per pixel |
b445e3b0 ED |
542 | * @latency_ns: memory latency for the platform |
543 | * | |
544 | * Calculate the watermark level (the level at which the display plane will | |
545 | * start fetching from memory again). Each chip has a different display | |
546 | * FIFO size and allocation, so the caller needs to figure that out and pass | |
547 | * in the correct intel_watermark_params structure. | |
548 | * | |
549 | * As the pixel clock runs, the FIFO will be drained at a rate that depends | |
550 | * on the pixel size. When it reaches the watermark level, it'll start | |
551 | * fetching FIFO line sized based chunks from memory until the FIFO fills | |
552 | * past the watermark point. If the FIFO drains completely, a FIFO underrun | |
553 | * will occur, and a display engine hang could result. | |
554 | */ | |
555 | static unsigned long intel_calculate_wm(unsigned long clock_in_khz, | |
556 | const struct intel_watermark_params *wm, | |
ac484963 | 557 | int fifo_size, int cpp, |
b445e3b0 ED |
558 | unsigned long latency_ns) |
559 | { | |
560 | long entries_required, wm_size; | |
561 | ||
562 | /* | |
563 | * Note: we need to make sure we don't overflow for various clock & | |
564 | * latency values. | |
565 | * clocks go from a few thousand to several hundred thousand. | |
566 | * latency is usually a few thousand | |
567 | */ | |
ac484963 | 568 | entries_required = ((clock_in_khz / 1000) * cpp * latency_ns) / |
b445e3b0 ED |
569 | 1000; |
570 | entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size); | |
571 | ||
572 | DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required); | |
573 | ||
574 | wm_size = fifo_size - (entries_required + wm->guard_size); | |
575 | ||
576 | DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size); | |
577 | ||
578 | /* Don't promote wm_size to unsigned... */ | |
579 | if (wm_size > (long)wm->max_wm) | |
580 | wm_size = wm->max_wm; | |
581 | if (wm_size <= 0) | |
582 | wm_size = wm->default_wm; | |
d6feb196 VS |
583 | |
584 | /* | |
585 | * Bspec seems to indicate that the value shouldn't be lower than | |
586 | * 'burst size + 1'. Certainly 830 is quite unhappy with low values. | |
587 | * Lets go for 8 which is the burst size since certain platforms | |
588 | * already use a hardcoded 8 (which is what the spec says should be | |
589 | * done). | |
590 | */ | |
591 | if (wm_size <= 8) | |
592 | wm_size = 8; | |
593 | ||
b445e3b0 ED |
594 | return wm_size; |
595 | } | |
596 | ||
597 | static struct drm_crtc *single_enabled_crtc(struct drm_device *dev) | |
598 | { | |
599 | struct drm_crtc *crtc, *enabled = NULL; | |
600 | ||
70e1e0ec | 601 | for_each_crtc(dev, crtc) { |
3490ea5d | 602 | if (intel_crtc_active(crtc)) { |
b445e3b0 ED |
603 | if (enabled) |
604 | return NULL; | |
605 | enabled = crtc; | |
606 | } | |
607 | } | |
608 | ||
609 | return enabled; | |
610 | } | |
611 | ||
46ba614c | 612 | static void pineview_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 613 | { |
46ba614c | 614 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
615 | struct drm_i915_private *dev_priv = dev->dev_private; |
616 | struct drm_crtc *crtc; | |
617 | const struct cxsr_latency *latency; | |
618 | u32 reg; | |
619 | unsigned long wm; | |
620 | ||
621 | latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3, | |
622 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
623 | if (!latency) { | |
624 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
5209b1f4 | 625 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
626 | return; |
627 | } | |
628 | ||
629 | crtc = single_enabled_crtc(dev); | |
630 | if (crtc) { | |
7c5f93b0 | 631 | const struct drm_display_mode *adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
ac484963 | 632 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
7c5f93b0 | 633 | int clock = adjusted_mode->crtc_clock; |
b445e3b0 ED |
634 | |
635 | /* Display SR */ | |
636 | wm = intel_calculate_wm(clock, &pineview_display_wm, | |
637 | pineview_display_wm.fifo_size, | |
ac484963 | 638 | cpp, latency->display_sr); |
b445e3b0 ED |
639 | reg = I915_READ(DSPFW1); |
640 | reg &= ~DSPFW_SR_MASK; | |
f4998963 | 641 | reg |= FW_WM(wm, SR); |
b445e3b0 ED |
642 | I915_WRITE(DSPFW1, reg); |
643 | DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg); | |
644 | ||
645 | /* cursor SR */ | |
646 | wm = intel_calculate_wm(clock, &pineview_cursor_wm, | |
647 | pineview_display_wm.fifo_size, | |
ac484963 | 648 | cpp, latency->cursor_sr); |
b445e3b0 ED |
649 | reg = I915_READ(DSPFW3); |
650 | reg &= ~DSPFW_CURSOR_SR_MASK; | |
f4998963 | 651 | reg |= FW_WM(wm, CURSOR_SR); |
b445e3b0 ED |
652 | I915_WRITE(DSPFW3, reg); |
653 | ||
654 | /* Display HPLL off SR */ | |
655 | wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm, | |
656 | pineview_display_hplloff_wm.fifo_size, | |
ac484963 | 657 | cpp, latency->display_hpll_disable); |
b445e3b0 ED |
658 | reg = I915_READ(DSPFW3); |
659 | reg &= ~DSPFW_HPLL_SR_MASK; | |
f4998963 | 660 | reg |= FW_WM(wm, HPLL_SR); |
b445e3b0 ED |
661 | I915_WRITE(DSPFW3, reg); |
662 | ||
663 | /* cursor HPLL off SR */ | |
664 | wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm, | |
665 | pineview_display_hplloff_wm.fifo_size, | |
ac484963 | 666 | cpp, latency->cursor_hpll_disable); |
b445e3b0 ED |
667 | reg = I915_READ(DSPFW3); |
668 | reg &= ~DSPFW_HPLL_CURSOR_MASK; | |
f4998963 | 669 | reg |= FW_WM(wm, HPLL_CURSOR); |
b445e3b0 ED |
670 | I915_WRITE(DSPFW3, reg); |
671 | DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg); | |
672 | ||
5209b1f4 | 673 | intel_set_memory_cxsr(dev_priv, true); |
b445e3b0 | 674 | } else { |
5209b1f4 | 675 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
676 | } |
677 | } | |
678 | ||
679 | static bool g4x_compute_wm0(struct drm_device *dev, | |
680 | int plane, | |
681 | const struct intel_watermark_params *display, | |
682 | int display_latency_ns, | |
683 | const struct intel_watermark_params *cursor, | |
684 | int cursor_latency_ns, | |
685 | int *plane_wm, | |
686 | int *cursor_wm) | |
687 | { | |
688 | struct drm_crtc *crtc; | |
4fe8590a | 689 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 690 | int htotal, hdisplay, clock, cpp; |
b445e3b0 ED |
691 | int line_time_us, line_count; |
692 | int entries, tlb_miss; | |
693 | ||
694 | crtc = intel_get_crtc_for_plane(dev, plane); | |
3490ea5d | 695 | if (!intel_crtc_active(crtc)) { |
b445e3b0 ED |
696 | *cursor_wm = cursor->guard_size; |
697 | *plane_wm = display->guard_size; | |
698 | return false; | |
699 | } | |
700 | ||
6e3c9717 | 701 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 702 | clock = adjusted_mode->crtc_clock; |
fec8cba3 | 703 | htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 704 | hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
ac484963 | 705 | cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b445e3b0 ED |
706 | |
707 | /* Use the small buffer method to calculate plane watermark */ | |
ac484963 | 708 | entries = ((clock * cpp / 1000) * display_latency_ns) / 1000; |
b445e3b0 ED |
709 | tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8; |
710 | if (tlb_miss > 0) | |
711 | entries += tlb_miss; | |
712 | entries = DIV_ROUND_UP(entries, display->cacheline_size); | |
713 | *plane_wm = entries + display->guard_size; | |
714 | if (*plane_wm > (int)display->max_wm) | |
715 | *plane_wm = display->max_wm; | |
716 | ||
717 | /* Use the large buffer method to calculate cursor watermark */ | |
922044c9 | 718 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 | 719 | line_count = (cursor_latency_ns / line_time_us + 1000) / 1000; |
ac484963 | 720 | entries = line_count * crtc->cursor->state->crtc_w * cpp; |
b445e3b0 ED |
721 | tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8; |
722 | if (tlb_miss > 0) | |
723 | entries += tlb_miss; | |
724 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); | |
725 | *cursor_wm = entries + cursor->guard_size; | |
726 | if (*cursor_wm > (int)cursor->max_wm) | |
727 | *cursor_wm = (int)cursor->max_wm; | |
728 | ||
729 | return true; | |
730 | } | |
731 | ||
732 | /* | |
733 | * Check the wm result. | |
734 | * | |
735 | * If any calculated watermark values is larger than the maximum value that | |
736 | * can be programmed into the associated watermark register, that watermark | |
737 | * must be disabled. | |
738 | */ | |
739 | static bool g4x_check_srwm(struct drm_device *dev, | |
740 | int display_wm, int cursor_wm, | |
741 | const struct intel_watermark_params *display, | |
742 | const struct intel_watermark_params *cursor) | |
743 | { | |
744 | DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n", | |
745 | display_wm, cursor_wm); | |
746 | ||
747 | if (display_wm > display->max_wm) { | |
748 | DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n", | |
749 | display_wm, display->max_wm); | |
750 | return false; | |
751 | } | |
752 | ||
753 | if (cursor_wm > cursor->max_wm) { | |
754 | DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n", | |
755 | cursor_wm, cursor->max_wm); | |
756 | return false; | |
757 | } | |
758 | ||
759 | if (!(display_wm || cursor_wm)) { | |
760 | DRM_DEBUG_KMS("SR latency is 0, disabling\n"); | |
761 | return false; | |
762 | } | |
763 | ||
764 | return true; | |
765 | } | |
766 | ||
767 | static bool g4x_compute_srwm(struct drm_device *dev, | |
768 | int plane, | |
769 | int latency_ns, | |
770 | const struct intel_watermark_params *display, | |
771 | const struct intel_watermark_params *cursor, | |
772 | int *display_wm, int *cursor_wm) | |
773 | { | |
774 | struct drm_crtc *crtc; | |
4fe8590a | 775 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 776 | int hdisplay, htotal, cpp, clock; |
b445e3b0 ED |
777 | unsigned long line_time_us; |
778 | int line_count, line_size; | |
779 | int small, large; | |
780 | int entries; | |
781 | ||
782 | if (!latency_ns) { | |
783 | *display_wm = *cursor_wm = 0; | |
784 | return false; | |
785 | } | |
786 | ||
787 | crtc = intel_get_crtc_for_plane(dev, plane); | |
6e3c9717 | 788 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 789 | clock = adjusted_mode->crtc_clock; |
fec8cba3 | 790 | htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 791 | hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
ac484963 | 792 | cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b445e3b0 | 793 | |
922044c9 | 794 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 | 795 | line_count = (latency_ns / line_time_us + 1000) / 1000; |
ac484963 | 796 | line_size = hdisplay * cpp; |
b445e3b0 ED |
797 | |
798 | /* Use the minimum of the small and large buffer method for primary */ | |
ac484963 | 799 | small = ((clock * cpp / 1000) * latency_ns) / 1000; |
b445e3b0 ED |
800 | large = line_count * line_size; |
801 | ||
802 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); | |
803 | *display_wm = entries + display->guard_size; | |
804 | ||
805 | /* calculate the self-refresh watermark for display cursor */ | |
ac484963 | 806 | entries = line_count * cpp * crtc->cursor->state->crtc_w; |
b445e3b0 ED |
807 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); |
808 | *cursor_wm = entries + cursor->guard_size; | |
809 | ||
810 | return g4x_check_srwm(dev, | |
811 | *display_wm, *cursor_wm, | |
812 | display, cursor); | |
813 | } | |
814 | ||
15665979 VS |
815 | #define FW_WM_VLV(value, plane) \ |
816 | (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK_VLV) | |
817 | ||
0018fda1 VS |
818 | static void vlv_write_wm_values(struct intel_crtc *crtc, |
819 | const struct vlv_wm_values *wm) | |
820 | { | |
821 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
822 | enum pipe pipe = crtc->pipe; | |
823 | ||
824 | I915_WRITE(VLV_DDL(pipe), | |
825 | (wm->ddl[pipe].cursor << DDL_CURSOR_SHIFT) | | |
826 | (wm->ddl[pipe].sprite[1] << DDL_SPRITE_SHIFT(1)) | | |
827 | (wm->ddl[pipe].sprite[0] << DDL_SPRITE_SHIFT(0)) | | |
828 | (wm->ddl[pipe].primary << DDL_PLANE_SHIFT)); | |
829 | ||
ae80152d | 830 | I915_WRITE(DSPFW1, |
15665979 VS |
831 | FW_WM(wm->sr.plane, SR) | |
832 | FW_WM(wm->pipe[PIPE_B].cursor, CURSORB) | | |
833 | FW_WM_VLV(wm->pipe[PIPE_B].primary, PLANEB) | | |
834 | FW_WM_VLV(wm->pipe[PIPE_A].primary, PLANEA)); | |
ae80152d | 835 | I915_WRITE(DSPFW2, |
15665979 VS |
836 | FW_WM_VLV(wm->pipe[PIPE_A].sprite[1], SPRITEB) | |
837 | FW_WM(wm->pipe[PIPE_A].cursor, CURSORA) | | |
838 | FW_WM_VLV(wm->pipe[PIPE_A].sprite[0], SPRITEA)); | |
ae80152d | 839 | I915_WRITE(DSPFW3, |
15665979 | 840 | FW_WM(wm->sr.cursor, CURSOR_SR)); |
ae80152d VS |
841 | |
842 | if (IS_CHERRYVIEW(dev_priv)) { | |
843 | I915_WRITE(DSPFW7_CHV, | |
15665979 VS |
844 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[1], SPRITED) | |
845 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[0], SPRITEC)); | |
ae80152d | 846 | I915_WRITE(DSPFW8_CHV, |
15665979 VS |
847 | FW_WM_VLV(wm->pipe[PIPE_C].sprite[1], SPRITEF) | |
848 | FW_WM_VLV(wm->pipe[PIPE_C].sprite[0], SPRITEE)); | |
ae80152d | 849 | I915_WRITE(DSPFW9_CHV, |
15665979 VS |
850 | FW_WM_VLV(wm->pipe[PIPE_C].primary, PLANEC) | |
851 | FW_WM(wm->pipe[PIPE_C].cursor, CURSORC)); | |
ae80152d | 852 | I915_WRITE(DSPHOWM, |
15665979 VS |
853 | FW_WM(wm->sr.plane >> 9, SR_HI) | |
854 | FW_WM(wm->pipe[PIPE_C].sprite[1] >> 8, SPRITEF_HI) | | |
855 | FW_WM(wm->pipe[PIPE_C].sprite[0] >> 8, SPRITEE_HI) | | |
856 | FW_WM(wm->pipe[PIPE_C].primary >> 8, PLANEC_HI) | | |
857 | FW_WM(wm->pipe[PIPE_B].sprite[1] >> 8, SPRITED_HI) | | |
858 | FW_WM(wm->pipe[PIPE_B].sprite[0] >> 8, SPRITEC_HI) | | |
859 | FW_WM(wm->pipe[PIPE_B].primary >> 8, PLANEB_HI) | | |
860 | FW_WM(wm->pipe[PIPE_A].sprite[1] >> 8, SPRITEB_HI) | | |
861 | FW_WM(wm->pipe[PIPE_A].sprite[0] >> 8, SPRITEA_HI) | | |
862 | FW_WM(wm->pipe[PIPE_A].primary >> 8, PLANEA_HI)); | |
ae80152d VS |
863 | } else { |
864 | I915_WRITE(DSPFW7, | |
15665979 VS |
865 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[1], SPRITED) | |
866 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[0], SPRITEC)); | |
ae80152d | 867 | I915_WRITE(DSPHOWM, |
15665979 VS |
868 | FW_WM(wm->sr.plane >> 9, SR_HI) | |
869 | FW_WM(wm->pipe[PIPE_B].sprite[1] >> 8, SPRITED_HI) | | |
870 | FW_WM(wm->pipe[PIPE_B].sprite[0] >> 8, SPRITEC_HI) | | |
871 | FW_WM(wm->pipe[PIPE_B].primary >> 8, PLANEB_HI) | | |
872 | FW_WM(wm->pipe[PIPE_A].sprite[1] >> 8, SPRITEB_HI) | | |
873 | FW_WM(wm->pipe[PIPE_A].sprite[0] >> 8, SPRITEA_HI) | | |
874 | FW_WM(wm->pipe[PIPE_A].primary >> 8, PLANEA_HI)); | |
ae80152d VS |
875 | } |
876 | ||
2cb389b7 VS |
877 | /* zero (unused) WM1 watermarks */ |
878 | I915_WRITE(DSPFW4, 0); | |
879 | I915_WRITE(DSPFW5, 0); | |
880 | I915_WRITE(DSPFW6, 0); | |
881 | I915_WRITE(DSPHOWM1, 0); | |
882 | ||
ae80152d | 883 | POSTING_READ(DSPFW1); |
0018fda1 VS |
884 | } |
885 | ||
15665979 VS |
886 | #undef FW_WM_VLV |
887 | ||
6eb1a681 VS |
888 | enum vlv_wm_level { |
889 | VLV_WM_LEVEL_PM2, | |
890 | VLV_WM_LEVEL_PM5, | |
891 | VLV_WM_LEVEL_DDR_DVFS, | |
6eb1a681 VS |
892 | }; |
893 | ||
262cd2e1 VS |
894 | /* latency must be in 0.1us units. */ |
895 | static unsigned int vlv_wm_method2(unsigned int pixel_rate, | |
896 | unsigned int pipe_htotal, | |
897 | unsigned int horiz_pixels, | |
ac484963 | 898 | unsigned int cpp, |
262cd2e1 VS |
899 | unsigned int latency) |
900 | { | |
901 | unsigned int ret; | |
902 | ||
903 | ret = (latency * pixel_rate) / (pipe_htotal * 10000); | |
ac484963 | 904 | ret = (ret + 1) * horiz_pixels * cpp; |
262cd2e1 VS |
905 | ret = DIV_ROUND_UP(ret, 64); |
906 | ||
907 | return ret; | |
908 | } | |
909 | ||
910 | static void vlv_setup_wm_latency(struct drm_device *dev) | |
911 | { | |
912 | struct drm_i915_private *dev_priv = dev->dev_private; | |
913 | ||
914 | /* all latencies in usec */ | |
915 | dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM2] = 3; | |
916 | ||
58590c14 VS |
917 | dev_priv->wm.max_level = VLV_WM_LEVEL_PM2; |
918 | ||
262cd2e1 VS |
919 | if (IS_CHERRYVIEW(dev_priv)) { |
920 | dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM5] = 12; | |
921 | dev_priv->wm.pri_latency[VLV_WM_LEVEL_DDR_DVFS] = 33; | |
58590c14 VS |
922 | |
923 | dev_priv->wm.max_level = VLV_WM_LEVEL_DDR_DVFS; | |
262cd2e1 VS |
924 | } |
925 | } | |
926 | ||
927 | static uint16_t vlv_compute_wm_level(struct intel_plane *plane, | |
928 | struct intel_crtc *crtc, | |
929 | const struct intel_plane_state *state, | |
930 | int level) | |
931 | { | |
932 | struct drm_i915_private *dev_priv = to_i915(plane->base.dev); | |
ac484963 | 933 | int clock, htotal, cpp, width, wm; |
262cd2e1 VS |
934 | |
935 | if (dev_priv->wm.pri_latency[level] == 0) | |
936 | return USHRT_MAX; | |
937 | ||
938 | if (!state->visible) | |
939 | return 0; | |
940 | ||
ac484963 | 941 | cpp = drm_format_plane_cpp(state->base.fb->pixel_format, 0); |
262cd2e1 VS |
942 | clock = crtc->config->base.adjusted_mode.crtc_clock; |
943 | htotal = crtc->config->base.adjusted_mode.crtc_htotal; | |
944 | width = crtc->config->pipe_src_w; | |
945 | if (WARN_ON(htotal == 0)) | |
946 | htotal = 1; | |
947 | ||
948 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) { | |
949 | /* | |
950 | * FIXME the formula gives values that are | |
951 | * too big for the cursor FIFO, and hence we | |
952 | * would never be able to use cursors. For | |
953 | * now just hardcode the watermark. | |
954 | */ | |
955 | wm = 63; | |
956 | } else { | |
ac484963 | 957 | wm = vlv_wm_method2(clock, htotal, width, cpp, |
262cd2e1 VS |
958 | dev_priv->wm.pri_latency[level] * 10); |
959 | } | |
960 | ||
961 | return min_t(int, wm, USHRT_MAX); | |
962 | } | |
963 | ||
54f1b6e1 VS |
964 | static void vlv_compute_fifo(struct intel_crtc *crtc) |
965 | { | |
966 | struct drm_device *dev = crtc->base.dev; | |
967 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
968 | struct intel_plane *plane; | |
969 | unsigned int total_rate = 0; | |
970 | const int fifo_size = 512 - 1; | |
971 | int fifo_extra, fifo_left = fifo_size; | |
972 | ||
973 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
974 | struct intel_plane_state *state = | |
975 | to_intel_plane_state(plane->base.state); | |
976 | ||
977 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) | |
978 | continue; | |
979 | ||
980 | if (state->visible) { | |
981 | wm_state->num_active_planes++; | |
982 | total_rate += drm_format_plane_cpp(state->base.fb->pixel_format, 0); | |
983 | } | |
984 | } | |
985 | ||
986 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
987 | struct intel_plane_state *state = | |
988 | to_intel_plane_state(plane->base.state); | |
989 | unsigned int rate; | |
990 | ||
991 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) { | |
992 | plane->wm.fifo_size = 63; | |
993 | continue; | |
994 | } | |
995 | ||
996 | if (!state->visible) { | |
997 | plane->wm.fifo_size = 0; | |
998 | continue; | |
999 | } | |
1000 | ||
1001 | rate = drm_format_plane_cpp(state->base.fb->pixel_format, 0); | |
1002 | plane->wm.fifo_size = fifo_size * rate / total_rate; | |
1003 | fifo_left -= plane->wm.fifo_size; | |
1004 | } | |
1005 | ||
1006 | fifo_extra = DIV_ROUND_UP(fifo_left, wm_state->num_active_planes ?: 1); | |
1007 | ||
1008 | /* spread the remainder evenly */ | |
1009 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1010 | int plane_extra; | |
1011 | ||
1012 | if (fifo_left == 0) | |
1013 | break; | |
1014 | ||
1015 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) | |
1016 | continue; | |
1017 | ||
1018 | /* give it all to the first plane if none are active */ | |
1019 | if (plane->wm.fifo_size == 0 && | |
1020 | wm_state->num_active_planes) | |
1021 | continue; | |
1022 | ||
1023 | plane_extra = min(fifo_extra, fifo_left); | |
1024 | plane->wm.fifo_size += plane_extra; | |
1025 | fifo_left -= plane_extra; | |
1026 | } | |
1027 | ||
1028 | WARN_ON(fifo_left != 0); | |
1029 | } | |
1030 | ||
262cd2e1 VS |
1031 | static void vlv_invert_wms(struct intel_crtc *crtc) |
1032 | { | |
1033 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1034 | int level; | |
1035 | ||
1036 | for (level = 0; level < wm_state->num_levels; level++) { | |
1037 | struct drm_device *dev = crtc->base.dev; | |
1038 | const int sr_fifo_size = INTEL_INFO(dev)->num_pipes * 512 - 1; | |
1039 | struct intel_plane *plane; | |
1040 | ||
1041 | wm_state->sr[level].plane = sr_fifo_size - wm_state->sr[level].plane; | |
1042 | wm_state->sr[level].cursor = 63 - wm_state->sr[level].cursor; | |
1043 | ||
1044 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1045 | switch (plane->base.type) { | |
1046 | int sprite; | |
1047 | case DRM_PLANE_TYPE_CURSOR: | |
1048 | wm_state->wm[level].cursor = plane->wm.fifo_size - | |
1049 | wm_state->wm[level].cursor; | |
1050 | break; | |
1051 | case DRM_PLANE_TYPE_PRIMARY: | |
1052 | wm_state->wm[level].primary = plane->wm.fifo_size - | |
1053 | wm_state->wm[level].primary; | |
1054 | break; | |
1055 | case DRM_PLANE_TYPE_OVERLAY: | |
1056 | sprite = plane->plane; | |
1057 | wm_state->wm[level].sprite[sprite] = plane->wm.fifo_size - | |
1058 | wm_state->wm[level].sprite[sprite]; | |
1059 | break; | |
1060 | } | |
1061 | } | |
1062 | } | |
1063 | } | |
1064 | ||
26e1fe4f | 1065 | static void vlv_compute_wm(struct intel_crtc *crtc) |
262cd2e1 VS |
1066 | { |
1067 | struct drm_device *dev = crtc->base.dev; | |
1068 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1069 | struct intel_plane *plane; | |
1070 | int sr_fifo_size = INTEL_INFO(dev)->num_pipes * 512 - 1; | |
1071 | int level; | |
1072 | ||
1073 | memset(wm_state, 0, sizeof(*wm_state)); | |
1074 | ||
852eb00d | 1075 | wm_state->cxsr = crtc->pipe != PIPE_C && crtc->wm.cxsr_allowed; |
58590c14 | 1076 | wm_state->num_levels = to_i915(dev)->wm.max_level + 1; |
262cd2e1 VS |
1077 | |
1078 | wm_state->num_active_planes = 0; | |
262cd2e1 | 1079 | |
54f1b6e1 | 1080 | vlv_compute_fifo(crtc); |
262cd2e1 VS |
1081 | |
1082 | if (wm_state->num_active_planes != 1) | |
1083 | wm_state->cxsr = false; | |
1084 | ||
1085 | if (wm_state->cxsr) { | |
1086 | for (level = 0; level < wm_state->num_levels; level++) { | |
1087 | wm_state->sr[level].plane = sr_fifo_size; | |
1088 | wm_state->sr[level].cursor = 63; | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1093 | struct intel_plane_state *state = | |
1094 | to_intel_plane_state(plane->base.state); | |
1095 | ||
1096 | if (!state->visible) | |
1097 | continue; | |
1098 | ||
1099 | /* normal watermarks */ | |
1100 | for (level = 0; level < wm_state->num_levels; level++) { | |
1101 | int wm = vlv_compute_wm_level(plane, crtc, state, level); | |
1102 | int max_wm = plane->base.type == DRM_PLANE_TYPE_CURSOR ? 63 : 511; | |
1103 | ||
1104 | /* hack */ | |
1105 | if (WARN_ON(level == 0 && wm > max_wm)) | |
1106 | wm = max_wm; | |
1107 | ||
1108 | if (wm > plane->wm.fifo_size) | |
1109 | break; | |
1110 | ||
1111 | switch (plane->base.type) { | |
1112 | int sprite; | |
1113 | case DRM_PLANE_TYPE_CURSOR: | |
1114 | wm_state->wm[level].cursor = wm; | |
1115 | break; | |
1116 | case DRM_PLANE_TYPE_PRIMARY: | |
1117 | wm_state->wm[level].primary = wm; | |
1118 | break; | |
1119 | case DRM_PLANE_TYPE_OVERLAY: | |
1120 | sprite = plane->plane; | |
1121 | wm_state->wm[level].sprite[sprite] = wm; | |
1122 | break; | |
1123 | } | |
1124 | } | |
1125 | ||
1126 | wm_state->num_levels = level; | |
1127 | ||
1128 | if (!wm_state->cxsr) | |
1129 | continue; | |
1130 | ||
1131 | /* maxfifo watermarks */ | |
1132 | switch (plane->base.type) { | |
1133 | int sprite, level; | |
1134 | case DRM_PLANE_TYPE_CURSOR: | |
1135 | for (level = 0; level < wm_state->num_levels; level++) | |
1136 | wm_state->sr[level].cursor = | |
5a37ed0a | 1137 | wm_state->wm[level].cursor; |
262cd2e1 VS |
1138 | break; |
1139 | case DRM_PLANE_TYPE_PRIMARY: | |
1140 | for (level = 0; level < wm_state->num_levels; level++) | |
1141 | wm_state->sr[level].plane = | |
1142 | min(wm_state->sr[level].plane, | |
1143 | wm_state->wm[level].primary); | |
1144 | break; | |
1145 | case DRM_PLANE_TYPE_OVERLAY: | |
1146 | sprite = plane->plane; | |
1147 | for (level = 0; level < wm_state->num_levels; level++) | |
1148 | wm_state->sr[level].plane = | |
1149 | min(wm_state->sr[level].plane, | |
1150 | wm_state->wm[level].sprite[sprite]); | |
1151 | break; | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | /* clear any (partially) filled invalid levels */ | |
58590c14 | 1156 | for (level = wm_state->num_levels; level < to_i915(dev)->wm.max_level + 1; level++) { |
262cd2e1 VS |
1157 | memset(&wm_state->wm[level], 0, sizeof(wm_state->wm[level])); |
1158 | memset(&wm_state->sr[level], 0, sizeof(wm_state->sr[level])); | |
1159 | } | |
1160 | ||
1161 | vlv_invert_wms(crtc); | |
1162 | } | |
1163 | ||
54f1b6e1 VS |
1164 | #define VLV_FIFO(plane, value) \ |
1165 | (((value) << DSPARB_ ## plane ## _SHIFT_VLV) & DSPARB_ ## plane ## _MASK_VLV) | |
1166 | ||
1167 | static void vlv_pipe_set_fifo_size(struct intel_crtc *crtc) | |
1168 | { | |
1169 | struct drm_device *dev = crtc->base.dev; | |
1170 | struct drm_i915_private *dev_priv = to_i915(dev); | |
1171 | struct intel_plane *plane; | |
1172 | int sprite0_start = 0, sprite1_start = 0, fifo_size = 0; | |
1173 | ||
1174 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1175 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) { | |
1176 | WARN_ON(plane->wm.fifo_size != 63); | |
1177 | continue; | |
1178 | } | |
1179 | ||
1180 | if (plane->base.type == DRM_PLANE_TYPE_PRIMARY) | |
1181 | sprite0_start = plane->wm.fifo_size; | |
1182 | else if (plane->plane == 0) | |
1183 | sprite1_start = sprite0_start + plane->wm.fifo_size; | |
1184 | else | |
1185 | fifo_size = sprite1_start + plane->wm.fifo_size; | |
1186 | } | |
1187 | ||
1188 | WARN_ON(fifo_size != 512 - 1); | |
1189 | ||
1190 | DRM_DEBUG_KMS("Pipe %c FIFO split %d / %d / %d\n", | |
1191 | pipe_name(crtc->pipe), sprite0_start, | |
1192 | sprite1_start, fifo_size); | |
1193 | ||
1194 | switch (crtc->pipe) { | |
1195 | uint32_t dsparb, dsparb2, dsparb3; | |
1196 | case PIPE_A: | |
1197 | dsparb = I915_READ(DSPARB); | |
1198 | dsparb2 = I915_READ(DSPARB2); | |
1199 | ||
1200 | dsparb &= ~(VLV_FIFO(SPRITEA, 0xff) | | |
1201 | VLV_FIFO(SPRITEB, 0xff)); | |
1202 | dsparb |= (VLV_FIFO(SPRITEA, sprite0_start) | | |
1203 | VLV_FIFO(SPRITEB, sprite1_start)); | |
1204 | ||
1205 | dsparb2 &= ~(VLV_FIFO(SPRITEA_HI, 0x1) | | |
1206 | VLV_FIFO(SPRITEB_HI, 0x1)); | |
1207 | dsparb2 |= (VLV_FIFO(SPRITEA_HI, sprite0_start >> 8) | | |
1208 | VLV_FIFO(SPRITEB_HI, sprite1_start >> 8)); | |
1209 | ||
1210 | I915_WRITE(DSPARB, dsparb); | |
1211 | I915_WRITE(DSPARB2, dsparb2); | |
1212 | break; | |
1213 | case PIPE_B: | |
1214 | dsparb = I915_READ(DSPARB); | |
1215 | dsparb2 = I915_READ(DSPARB2); | |
1216 | ||
1217 | dsparb &= ~(VLV_FIFO(SPRITEC, 0xff) | | |
1218 | VLV_FIFO(SPRITED, 0xff)); | |
1219 | dsparb |= (VLV_FIFO(SPRITEC, sprite0_start) | | |
1220 | VLV_FIFO(SPRITED, sprite1_start)); | |
1221 | ||
1222 | dsparb2 &= ~(VLV_FIFO(SPRITEC_HI, 0xff) | | |
1223 | VLV_FIFO(SPRITED_HI, 0xff)); | |
1224 | dsparb2 |= (VLV_FIFO(SPRITEC_HI, sprite0_start >> 8) | | |
1225 | VLV_FIFO(SPRITED_HI, sprite1_start >> 8)); | |
1226 | ||
1227 | I915_WRITE(DSPARB, dsparb); | |
1228 | I915_WRITE(DSPARB2, dsparb2); | |
1229 | break; | |
1230 | case PIPE_C: | |
1231 | dsparb3 = I915_READ(DSPARB3); | |
1232 | dsparb2 = I915_READ(DSPARB2); | |
1233 | ||
1234 | dsparb3 &= ~(VLV_FIFO(SPRITEE, 0xff) | | |
1235 | VLV_FIFO(SPRITEF, 0xff)); | |
1236 | dsparb3 |= (VLV_FIFO(SPRITEE, sprite0_start) | | |
1237 | VLV_FIFO(SPRITEF, sprite1_start)); | |
1238 | ||
1239 | dsparb2 &= ~(VLV_FIFO(SPRITEE_HI, 0xff) | | |
1240 | VLV_FIFO(SPRITEF_HI, 0xff)); | |
1241 | dsparb2 |= (VLV_FIFO(SPRITEE_HI, sprite0_start >> 8) | | |
1242 | VLV_FIFO(SPRITEF_HI, sprite1_start >> 8)); | |
1243 | ||
1244 | I915_WRITE(DSPARB3, dsparb3); | |
1245 | I915_WRITE(DSPARB2, dsparb2); | |
1246 | break; | |
1247 | default: | |
1248 | break; | |
1249 | } | |
1250 | } | |
1251 | ||
1252 | #undef VLV_FIFO | |
1253 | ||
262cd2e1 VS |
1254 | static void vlv_merge_wm(struct drm_device *dev, |
1255 | struct vlv_wm_values *wm) | |
1256 | { | |
1257 | struct intel_crtc *crtc; | |
1258 | int num_active_crtcs = 0; | |
1259 | ||
58590c14 | 1260 | wm->level = to_i915(dev)->wm.max_level; |
262cd2e1 VS |
1261 | wm->cxsr = true; |
1262 | ||
1263 | for_each_intel_crtc(dev, crtc) { | |
1264 | const struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1265 | ||
1266 | if (!crtc->active) | |
1267 | continue; | |
1268 | ||
1269 | if (!wm_state->cxsr) | |
1270 | wm->cxsr = false; | |
1271 | ||
1272 | num_active_crtcs++; | |
1273 | wm->level = min_t(int, wm->level, wm_state->num_levels - 1); | |
1274 | } | |
1275 | ||
1276 | if (num_active_crtcs != 1) | |
1277 | wm->cxsr = false; | |
1278 | ||
6f9c784b VS |
1279 | if (num_active_crtcs > 1) |
1280 | wm->level = VLV_WM_LEVEL_PM2; | |
1281 | ||
262cd2e1 VS |
1282 | for_each_intel_crtc(dev, crtc) { |
1283 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1284 | enum pipe pipe = crtc->pipe; | |
1285 | ||
1286 | if (!crtc->active) | |
1287 | continue; | |
1288 | ||
1289 | wm->pipe[pipe] = wm_state->wm[wm->level]; | |
1290 | if (wm->cxsr) | |
1291 | wm->sr = wm_state->sr[wm->level]; | |
1292 | ||
1293 | wm->ddl[pipe].primary = DDL_PRECISION_HIGH | 2; | |
1294 | wm->ddl[pipe].sprite[0] = DDL_PRECISION_HIGH | 2; | |
1295 | wm->ddl[pipe].sprite[1] = DDL_PRECISION_HIGH | 2; | |
1296 | wm->ddl[pipe].cursor = DDL_PRECISION_HIGH | 2; | |
1297 | } | |
1298 | } | |
1299 | ||
1300 | static void vlv_update_wm(struct drm_crtc *crtc) | |
1301 | { | |
1302 | struct drm_device *dev = crtc->dev; | |
1303 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1304 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1305 | enum pipe pipe = intel_crtc->pipe; | |
1306 | struct vlv_wm_values wm = {}; | |
1307 | ||
26e1fe4f | 1308 | vlv_compute_wm(intel_crtc); |
262cd2e1 VS |
1309 | vlv_merge_wm(dev, &wm); |
1310 | ||
54f1b6e1 VS |
1311 | if (memcmp(&dev_priv->wm.vlv, &wm, sizeof(wm)) == 0) { |
1312 | /* FIXME should be part of crtc atomic commit */ | |
1313 | vlv_pipe_set_fifo_size(intel_crtc); | |
262cd2e1 | 1314 | return; |
54f1b6e1 | 1315 | } |
262cd2e1 VS |
1316 | |
1317 | if (wm.level < VLV_WM_LEVEL_DDR_DVFS && | |
1318 | dev_priv->wm.vlv.level >= VLV_WM_LEVEL_DDR_DVFS) | |
1319 | chv_set_memory_dvfs(dev_priv, false); | |
1320 | ||
1321 | if (wm.level < VLV_WM_LEVEL_PM5 && | |
1322 | dev_priv->wm.vlv.level >= VLV_WM_LEVEL_PM5) | |
1323 | chv_set_memory_pm5(dev_priv, false); | |
1324 | ||
852eb00d | 1325 | if (!wm.cxsr && dev_priv->wm.vlv.cxsr) |
262cd2e1 | 1326 | intel_set_memory_cxsr(dev_priv, false); |
262cd2e1 | 1327 | |
54f1b6e1 VS |
1328 | /* FIXME should be part of crtc atomic commit */ |
1329 | vlv_pipe_set_fifo_size(intel_crtc); | |
1330 | ||
262cd2e1 VS |
1331 | vlv_write_wm_values(intel_crtc, &wm); |
1332 | ||
1333 | DRM_DEBUG_KMS("Setting FIFO watermarks - %c: plane=%d, cursor=%d, " | |
1334 | "sprite0=%d, sprite1=%d, SR: plane=%d, cursor=%d level=%d cxsr=%d\n", | |
1335 | pipe_name(pipe), wm.pipe[pipe].primary, wm.pipe[pipe].cursor, | |
1336 | wm.pipe[pipe].sprite[0], wm.pipe[pipe].sprite[1], | |
1337 | wm.sr.plane, wm.sr.cursor, wm.level, wm.cxsr); | |
1338 | ||
852eb00d | 1339 | if (wm.cxsr && !dev_priv->wm.vlv.cxsr) |
262cd2e1 | 1340 | intel_set_memory_cxsr(dev_priv, true); |
262cd2e1 VS |
1341 | |
1342 | if (wm.level >= VLV_WM_LEVEL_PM5 && | |
1343 | dev_priv->wm.vlv.level < VLV_WM_LEVEL_PM5) | |
1344 | chv_set_memory_pm5(dev_priv, true); | |
1345 | ||
1346 | if (wm.level >= VLV_WM_LEVEL_DDR_DVFS && | |
1347 | dev_priv->wm.vlv.level < VLV_WM_LEVEL_DDR_DVFS) | |
1348 | chv_set_memory_dvfs(dev_priv, true); | |
1349 | ||
1350 | dev_priv->wm.vlv = wm; | |
3c2777fd VS |
1351 | } |
1352 | ||
ae80152d VS |
1353 | #define single_plane_enabled(mask) is_power_of_2(mask) |
1354 | ||
46ba614c | 1355 | static void g4x_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1356 | { |
46ba614c | 1357 | struct drm_device *dev = crtc->dev; |
b445e3b0 ED |
1358 | static const int sr_latency_ns = 12000; |
1359 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1360 | int planea_wm, planeb_wm, cursora_wm, cursorb_wm; | |
1361 | int plane_sr, cursor_sr; | |
1362 | unsigned int enabled = 0; | |
9858425c | 1363 | bool cxsr_enabled; |
b445e3b0 | 1364 | |
51cea1f4 | 1365 | if (g4x_compute_wm0(dev, PIPE_A, |
5aef6003 CW |
1366 | &g4x_wm_info, pessimal_latency_ns, |
1367 | &g4x_cursor_wm_info, pessimal_latency_ns, | |
b445e3b0 | 1368 | &planea_wm, &cursora_wm)) |
51cea1f4 | 1369 | enabled |= 1 << PIPE_A; |
b445e3b0 | 1370 | |
51cea1f4 | 1371 | if (g4x_compute_wm0(dev, PIPE_B, |
5aef6003 CW |
1372 | &g4x_wm_info, pessimal_latency_ns, |
1373 | &g4x_cursor_wm_info, pessimal_latency_ns, | |
b445e3b0 | 1374 | &planeb_wm, &cursorb_wm)) |
51cea1f4 | 1375 | enabled |= 1 << PIPE_B; |
b445e3b0 | 1376 | |
b445e3b0 ED |
1377 | if (single_plane_enabled(enabled) && |
1378 | g4x_compute_srwm(dev, ffs(enabled) - 1, | |
1379 | sr_latency_ns, | |
1380 | &g4x_wm_info, | |
1381 | &g4x_cursor_wm_info, | |
52bd02d8 | 1382 | &plane_sr, &cursor_sr)) { |
9858425c | 1383 | cxsr_enabled = true; |
52bd02d8 | 1384 | } else { |
9858425c | 1385 | cxsr_enabled = false; |
5209b1f4 | 1386 | intel_set_memory_cxsr(dev_priv, false); |
52bd02d8 CW |
1387 | plane_sr = cursor_sr = 0; |
1388 | } | |
b445e3b0 | 1389 | |
a5043453 VS |
1390 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, " |
1391 | "B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n", | |
b445e3b0 ED |
1392 | planea_wm, cursora_wm, |
1393 | planeb_wm, cursorb_wm, | |
1394 | plane_sr, cursor_sr); | |
1395 | ||
1396 | I915_WRITE(DSPFW1, | |
f4998963 VS |
1397 | FW_WM(plane_sr, SR) | |
1398 | FW_WM(cursorb_wm, CURSORB) | | |
1399 | FW_WM(planeb_wm, PLANEB) | | |
1400 | FW_WM(planea_wm, PLANEA)); | |
b445e3b0 | 1401 | I915_WRITE(DSPFW2, |
8c919b28 | 1402 | (I915_READ(DSPFW2) & ~DSPFW_CURSORA_MASK) | |
f4998963 | 1403 | FW_WM(cursora_wm, CURSORA)); |
b445e3b0 ED |
1404 | /* HPLL off in SR has some issues on G4x... disable it */ |
1405 | I915_WRITE(DSPFW3, | |
8c919b28 | 1406 | (I915_READ(DSPFW3) & ~(DSPFW_HPLL_SR_EN | DSPFW_CURSOR_SR_MASK)) | |
f4998963 | 1407 | FW_WM(cursor_sr, CURSOR_SR)); |
9858425c ID |
1408 | |
1409 | if (cxsr_enabled) | |
1410 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1411 | } |
1412 | ||
46ba614c | 1413 | static void i965_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1414 | { |
46ba614c | 1415 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1416 | struct drm_i915_private *dev_priv = dev->dev_private; |
1417 | struct drm_crtc *crtc; | |
1418 | int srwm = 1; | |
1419 | int cursor_sr = 16; | |
9858425c | 1420 | bool cxsr_enabled; |
b445e3b0 ED |
1421 | |
1422 | /* Calc sr entries for one plane configs */ | |
1423 | crtc = single_enabled_crtc(dev); | |
1424 | if (crtc) { | |
1425 | /* self-refresh has much higher latency */ | |
1426 | static const int sr_latency_ns = 12000; | |
124abe07 | 1427 | const struct drm_display_mode *adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1428 | int clock = adjusted_mode->crtc_clock; |
fec8cba3 | 1429 | int htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 1430 | int hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
ac484963 | 1431 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b445e3b0 ED |
1432 | unsigned long line_time_us; |
1433 | int entries; | |
1434 | ||
922044c9 | 1435 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 ED |
1436 | |
1437 | /* Use ns/us then divide to preserve precision */ | |
1438 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
ac484963 | 1439 | cpp * hdisplay; |
b445e3b0 ED |
1440 | entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE); |
1441 | srwm = I965_FIFO_SIZE - entries; | |
1442 | if (srwm < 0) | |
1443 | srwm = 1; | |
1444 | srwm &= 0x1ff; | |
1445 | DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n", | |
1446 | entries, srwm); | |
1447 | ||
1448 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
ac484963 | 1449 | cpp * crtc->cursor->state->crtc_w; |
b445e3b0 ED |
1450 | entries = DIV_ROUND_UP(entries, |
1451 | i965_cursor_wm_info.cacheline_size); | |
1452 | cursor_sr = i965_cursor_wm_info.fifo_size - | |
1453 | (entries + i965_cursor_wm_info.guard_size); | |
1454 | ||
1455 | if (cursor_sr > i965_cursor_wm_info.max_wm) | |
1456 | cursor_sr = i965_cursor_wm_info.max_wm; | |
1457 | ||
1458 | DRM_DEBUG_KMS("self-refresh watermark: display plane %d " | |
1459 | "cursor %d\n", srwm, cursor_sr); | |
1460 | ||
9858425c | 1461 | cxsr_enabled = true; |
b445e3b0 | 1462 | } else { |
9858425c | 1463 | cxsr_enabled = false; |
b445e3b0 | 1464 | /* Turn off self refresh if both pipes are enabled */ |
5209b1f4 | 1465 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
1466 | } |
1467 | ||
1468 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n", | |
1469 | srwm); | |
1470 | ||
1471 | /* 965 has limitations... */ | |
f4998963 VS |
1472 | I915_WRITE(DSPFW1, FW_WM(srwm, SR) | |
1473 | FW_WM(8, CURSORB) | | |
1474 | FW_WM(8, PLANEB) | | |
1475 | FW_WM(8, PLANEA)); | |
1476 | I915_WRITE(DSPFW2, FW_WM(8, CURSORA) | | |
1477 | FW_WM(8, PLANEC_OLD)); | |
b445e3b0 | 1478 | /* update cursor SR watermark */ |
f4998963 | 1479 | I915_WRITE(DSPFW3, FW_WM(cursor_sr, CURSOR_SR)); |
9858425c ID |
1480 | |
1481 | if (cxsr_enabled) | |
1482 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1483 | } |
1484 | ||
f4998963 VS |
1485 | #undef FW_WM |
1486 | ||
46ba614c | 1487 | static void i9xx_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1488 | { |
46ba614c | 1489 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1490 | struct drm_i915_private *dev_priv = dev->dev_private; |
1491 | const struct intel_watermark_params *wm_info; | |
1492 | uint32_t fwater_lo; | |
1493 | uint32_t fwater_hi; | |
1494 | int cwm, srwm = 1; | |
1495 | int fifo_size; | |
1496 | int planea_wm, planeb_wm; | |
1497 | struct drm_crtc *crtc, *enabled = NULL; | |
1498 | ||
1499 | if (IS_I945GM(dev)) | |
1500 | wm_info = &i945_wm_info; | |
1501 | else if (!IS_GEN2(dev)) | |
1502 | wm_info = &i915_wm_info; | |
1503 | else | |
9d539105 | 1504 | wm_info = &i830_a_wm_info; |
b445e3b0 ED |
1505 | |
1506 | fifo_size = dev_priv->display.get_fifo_size(dev, 0); | |
1507 | crtc = intel_get_crtc_for_plane(dev, 0); | |
3490ea5d | 1508 | if (intel_crtc_active(crtc)) { |
241bfc38 | 1509 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 1510 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b9e0bda3 CW |
1511 | if (IS_GEN2(dev)) |
1512 | cpp = 4; | |
1513 | ||
6e3c9717 | 1514 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1515 | planea_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
b9e0bda3 | 1516 | wm_info, fifo_size, cpp, |
5aef6003 | 1517 | pessimal_latency_ns); |
b445e3b0 | 1518 | enabled = crtc; |
9d539105 | 1519 | } else { |
b445e3b0 | 1520 | planea_wm = fifo_size - wm_info->guard_size; |
9d539105 VS |
1521 | if (planea_wm > (long)wm_info->max_wm) |
1522 | planea_wm = wm_info->max_wm; | |
1523 | } | |
1524 | ||
1525 | if (IS_GEN2(dev)) | |
1526 | wm_info = &i830_bc_wm_info; | |
b445e3b0 ED |
1527 | |
1528 | fifo_size = dev_priv->display.get_fifo_size(dev, 1); | |
1529 | crtc = intel_get_crtc_for_plane(dev, 1); | |
3490ea5d | 1530 | if (intel_crtc_active(crtc)) { |
241bfc38 | 1531 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 1532 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b9e0bda3 CW |
1533 | if (IS_GEN2(dev)) |
1534 | cpp = 4; | |
1535 | ||
6e3c9717 | 1536 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1537 | planeb_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
b9e0bda3 | 1538 | wm_info, fifo_size, cpp, |
5aef6003 | 1539 | pessimal_latency_ns); |
b445e3b0 ED |
1540 | if (enabled == NULL) |
1541 | enabled = crtc; | |
1542 | else | |
1543 | enabled = NULL; | |
9d539105 | 1544 | } else { |
b445e3b0 | 1545 | planeb_wm = fifo_size - wm_info->guard_size; |
9d539105 VS |
1546 | if (planeb_wm > (long)wm_info->max_wm) |
1547 | planeb_wm = wm_info->max_wm; | |
1548 | } | |
b445e3b0 ED |
1549 | |
1550 | DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm); | |
1551 | ||
2ab1bc9d | 1552 | if (IS_I915GM(dev) && enabled) { |
2ff8fde1 | 1553 | struct drm_i915_gem_object *obj; |
2ab1bc9d | 1554 | |
59bea882 | 1555 | obj = intel_fb_obj(enabled->primary->state->fb); |
2ab1bc9d DV |
1556 | |
1557 | /* self-refresh seems busted with untiled */ | |
2ff8fde1 | 1558 | if (obj->tiling_mode == I915_TILING_NONE) |
2ab1bc9d DV |
1559 | enabled = NULL; |
1560 | } | |
1561 | ||
b445e3b0 ED |
1562 | /* |
1563 | * Overlay gets an aggressive default since video jitter is bad. | |
1564 | */ | |
1565 | cwm = 2; | |
1566 | ||
1567 | /* Play safe and disable self-refresh before adjusting watermarks. */ | |
5209b1f4 | 1568 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
1569 | |
1570 | /* Calc sr entries for one plane configs */ | |
1571 | if (HAS_FW_BLC(dev) && enabled) { | |
1572 | /* self-refresh has much higher latency */ | |
1573 | static const int sr_latency_ns = 6000; | |
124abe07 | 1574 | const struct drm_display_mode *adjusted_mode = &to_intel_crtc(enabled)->config->base.adjusted_mode; |
241bfc38 | 1575 | int clock = adjusted_mode->crtc_clock; |
fec8cba3 | 1576 | int htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 1577 | int hdisplay = to_intel_crtc(enabled)->config->pipe_src_w; |
ac484963 | 1578 | int cpp = drm_format_plane_cpp(enabled->primary->state->fb->pixel_format, 0); |
b445e3b0 ED |
1579 | unsigned long line_time_us; |
1580 | int entries; | |
1581 | ||
922044c9 | 1582 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 ED |
1583 | |
1584 | /* Use ns/us then divide to preserve precision */ | |
1585 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
ac484963 | 1586 | cpp * hdisplay; |
b445e3b0 ED |
1587 | entries = DIV_ROUND_UP(entries, wm_info->cacheline_size); |
1588 | DRM_DEBUG_KMS("self-refresh entries: %d\n", entries); | |
1589 | srwm = wm_info->fifo_size - entries; | |
1590 | if (srwm < 0) | |
1591 | srwm = 1; | |
1592 | ||
1593 | if (IS_I945G(dev) || IS_I945GM(dev)) | |
1594 | I915_WRITE(FW_BLC_SELF, | |
1595 | FW_BLC_SELF_FIFO_MASK | (srwm & 0xff)); | |
1596 | else if (IS_I915GM(dev)) | |
1597 | I915_WRITE(FW_BLC_SELF, srwm & 0x3f); | |
1598 | } | |
1599 | ||
1600 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n", | |
1601 | planea_wm, planeb_wm, cwm, srwm); | |
1602 | ||
1603 | fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f); | |
1604 | fwater_hi = (cwm & 0x1f); | |
1605 | ||
1606 | /* Set request length to 8 cachelines per fetch */ | |
1607 | fwater_lo = fwater_lo | (1 << 24) | (1 << 8); | |
1608 | fwater_hi = fwater_hi | (1 << 8); | |
1609 | ||
1610 | I915_WRITE(FW_BLC, fwater_lo); | |
1611 | I915_WRITE(FW_BLC2, fwater_hi); | |
1612 | ||
5209b1f4 ID |
1613 | if (enabled) |
1614 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1615 | } |
1616 | ||
feb56b93 | 1617 | static void i845_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1618 | { |
46ba614c | 1619 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1620 | struct drm_i915_private *dev_priv = dev->dev_private; |
1621 | struct drm_crtc *crtc; | |
241bfc38 | 1622 | const struct drm_display_mode *adjusted_mode; |
b445e3b0 ED |
1623 | uint32_t fwater_lo; |
1624 | int planea_wm; | |
1625 | ||
1626 | crtc = single_enabled_crtc(dev); | |
1627 | if (crtc == NULL) | |
1628 | return; | |
1629 | ||
6e3c9717 | 1630 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1631 | planea_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
feb56b93 | 1632 | &i845_wm_info, |
b445e3b0 | 1633 | dev_priv->display.get_fifo_size(dev, 0), |
5aef6003 | 1634 | 4, pessimal_latency_ns); |
b445e3b0 ED |
1635 | fwater_lo = I915_READ(FW_BLC) & ~0xfff; |
1636 | fwater_lo |= (3<<8) | planea_wm; | |
1637 | ||
1638 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm); | |
1639 | ||
1640 | I915_WRITE(FW_BLC, fwater_lo); | |
1641 | } | |
1642 | ||
8cfb3407 | 1643 | uint32_t ilk_pipe_pixel_rate(const struct intel_crtc_state *pipe_config) |
801bcfff | 1644 | { |
fd4daa9c | 1645 | uint32_t pixel_rate; |
801bcfff | 1646 | |
8cfb3407 | 1647 | pixel_rate = pipe_config->base.adjusted_mode.crtc_clock; |
801bcfff PZ |
1648 | |
1649 | /* We only use IF-ID interlacing. If we ever use PF-ID we'll need to | |
1650 | * adjust the pixel_rate here. */ | |
1651 | ||
8cfb3407 | 1652 | if (pipe_config->pch_pfit.enabled) { |
801bcfff | 1653 | uint64_t pipe_w, pipe_h, pfit_w, pfit_h; |
8cfb3407 VS |
1654 | uint32_t pfit_size = pipe_config->pch_pfit.size; |
1655 | ||
1656 | pipe_w = pipe_config->pipe_src_w; | |
1657 | pipe_h = pipe_config->pipe_src_h; | |
801bcfff | 1658 | |
801bcfff PZ |
1659 | pfit_w = (pfit_size >> 16) & 0xFFFF; |
1660 | pfit_h = pfit_size & 0xFFFF; | |
1661 | if (pipe_w < pfit_w) | |
1662 | pipe_w = pfit_w; | |
1663 | if (pipe_h < pfit_h) | |
1664 | pipe_h = pfit_h; | |
1665 | ||
15126882 MR |
1666 | if (WARN_ON(!pfit_w || !pfit_h)) |
1667 | return pixel_rate; | |
1668 | ||
801bcfff PZ |
1669 | pixel_rate = div_u64((uint64_t) pixel_rate * pipe_w * pipe_h, |
1670 | pfit_w * pfit_h); | |
1671 | } | |
1672 | ||
1673 | return pixel_rate; | |
1674 | } | |
1675 | ||
37126462 | 1676 | /* latency must be in 0.1us units. */ |
ac484963 | 1677 | static uint32_t ilk_wm_method1(uint32_t pixel_rate, uint8_t cpp, uint32_t latency) |
801bcfff PZ |
1678 | { |
1679 | uint64_t ret; | |
1680 | ||
3312ba65 VS |
1681 | if (WARN(latency == 0, "Latency value missing\n")) |
1682 | return UINT_MAX; | |
1683 | ||
ac484963 | 1684 | ret = (uint64_t) pixel_rate * cpp * latency; |
801bcfff PZ |
1685 | ret = DIV_ROUND_UP_ULL(ret, 64 * 10000) + 2; |
1686 | ||
1687 | return ret; | |
1688 | } | |
1689 | ||
37126462 | 1690 | /* latency must be in 0.1us units. */ |
23297044 | 1691 | static uint32_t ilk_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, |
ac484963 | 1692 | uint32_t horiz_pixels, uint8_t cpp, |
801bcfff PZ |
1693 | uint32_t latency) |
1694 | { | |
1695 | uint32_t ret; | |
1696 | ||
3312ba65 VS |
1697 | if (WARN(latency == 0, "Latency value missing\n")) |
1698 | return UINT_MAX; | |
15126882 MR |
1699 | if (WARN_ON(!pipe_htotal)) |
1700 | return UINT_MAX; | |
3312ba65 | 1701 | |
801bcfff | 1702 | ret = (latency * pixel_rate) / (pipe_htotal * 10000); |
ac484963 | 1703 | ret = (ret + 1) * horiz_pixels * cpp; |
801bcfff PZ |
1704 | ret = DIV_ROUND_UP(ret, 64) + 2; |
1705 | return ret; | |
1706 | } | |
1707 | ||
23297044 | 1708 | static uint32_t ilk_wm_fbc(uint32_t pri_val, uint32_t horiz_pixels, |
ac484963 | 1709 | uint8_t cpp) |
cca32e9a | 1710 | { |
15126882 MR |
1711 | /* |
1712 | * Neither of these should be possible since this function shouldn't be | |
1713 | * called if the CRTC is off or the plane is invisible. But let's be | |
1714 | * extra paranoid to avoid a potential divide-by-zero if we screw up | |
1715 | * elsewhere in the driver. | |
1716 | */ | |
ac484963 | 1717 | if (WARN_ON(!cpp)) |
15126882 MR |
1718 | return 0; |
1719 | if (WARN_ON(!horiz_pixels)) | |
1720 | return 0; | |
1721 | ||
ac484963 | 1722 | return DIV_ROUND_UP(pri_val * 64, horiz_pixels * cpp) + 2; |
cca32e9a PZ |
1723 | } |
1724 | ||
820c1980 | 1725 | struct ilk_wm_maximums { |
cca32e9a PZ |
1726 | uint16_t pri; |
1727 | uint16_t spr; | |
1728 | uint16_t cur; | |
1729 | uint16_t fbc; | |
1730 | }; | |
1731 | ||
37126462 VS |
1732 | /* |
1733 | * For both WM_PIPE and WM_LP. | |
1734 | * mem_value must be in 0.1us units. | |
1735 | */ | |
7221fc33 | 1736 | static uint32_t ilk_compute_pri_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1737 | const struct intel_plane_state *pstate, |
cca32e9a PZ |
1738 | uint32_t mem_value, |
1739 | bool is_lp) | |
801bcfff | 1740 | { |
ac484963 VS |
1741 | int cpp = pstate->base.fb ? |
1742 | drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0; | |
cca32e9a PZ |
1743 | uint32_t method1, method2; |
1744 | ||
7221fc33 | 1745 | if (!cstate->base.active || !pstate->visible) |
801bcfff PZ |
1746 | return 0; |
1747 | ||
ac484963 | 1748 | method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), cpp, mem_value); |
cca32e9a PZ |
1749 | |
1750 | if (!is_lp) | |
1751 | return method1; | |
1752 | ||
7221fc33 MR |
1753 | method2 = ilk_wm_method2(ilk_pipe_pixel_rate(cstate), |
1754 | cstate->base.adjusted_mode.crtc_htotal, | |
43d59eda | 1755 | drm_rect_width(&pstate->dst), |
ac484963 | 1756 | cpp, mem_value); |
cca32e9a PZ |
1757 | |
1758 | return min(method1, method2); | |
801bcfff PZ |
1759 | } |
1760 | ||
37126462 VS |
1761 | /* |
1762 | * For both WM_PIPE and WM_LP. | |
1763 | * mem_value must be in 0.1us units. | |
1764 | */ | |
7221fc33 | 1765 | static uint32_t ilk_compute_spr_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1766 | const struct intel_plane_state *pstate, |
801bcfff PZ |
1767 | uint32_t mem_value) |
1768 | { | |
ac484963 VS |
1769 | int cpp = pstate->base.fb ? |
1770 | drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0; | |
801bcfff PZ |
1771 | uint32_t method1, method2; |
1772 | ||
7221fc33 | 1773 | if (!cstate->base.active || !pstate->visible) |
801bcfff PZ |
1774 | return 0; |
1775 | ||
ac484963 | 1776 | method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), cpp, mem_value); |
7221fc33 MR |
1777 | method2 = ilk_wm_method2(ilk_pipe_pixel_rate(cstate), |
1778 | cstate->base.adjusted_mode.crtc_htotal, | |
43d59eda | 1779 | drm_rect_width(&pstate->dst), |
ac484963 | 1780 | cpp, mem_value); |
801bcfff PZ |
1781 | return min(method1, method2); |
1782 | } | |
1783 | ||
37126462 VS |
1784 | /* |
1785 | * For both WM_PIPE and WM_LP. | |
1786 | * mem_value must be in 0.1us units. | |
1787 | */ | |
7221fc33 | 1788 | static uint32_t ilk_compute_cur_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1789 | const struct intel_plane_state *pstate, |
801bcfff PZ |
1790 | uint32_t mem_value) |
1791 | { | |
b2435692 MR |
1792 | /* |
1793 | * We treat the cursor plane as always-on for the purposes of watermark | |
1794 | * calculation. Until we have two-stage watermark programming merged, | |
1795 | * this is necessary to avoid flickering. | |
1796 | */ | |
1797 | int cpp = 4; | |
1798 | int width = pstate->visible ? pstate->base.crtc_w : 64; | |
43d59eda | 1799 | |
b2435692 | 1800 | if (!cstate->base.active) |
801bcfff PZ |
1801 | return 0; |
1802 | ||
7221fc33 MR |
1803 | return ilk_wm_method2(ilk_pipe_pixel_rate(cstate), |
1804 | cstate->base.adjusted_mode.crtc_htotal, | |
b2435692 | 1805 | width, cpp, mem_value); |
801bcfff PZ |
1806 | } |
1807 | ||
cca32e9a | 1808 | /* Only for WM_LP. */ |
7221fc33 | 1809 | static uint32_t ilk_compute_fbc_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1810 | const struct intel_plane_state *pstate, |
1fda9882 | 1811 | uint32_t pri_val) |
cca32e9a | 1812 | { |
ac484963 VS |
1813 | int cpp = pstate->base.fb ? |
1814 | drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0; | |
43d59eda | 1815 | |
7221fc33 | 1816 | if (!cstate->base.active || !pstate->visible) |
cca32e9a PZ |
1817 | return 0; |
1818 | ||
ac484963 | 1819 | return ilk_wm_fbc(pri_val, drm_rect_width(&pstate->dst), cpp); |
cca32e9a PZ |
1820 | } |
1821 | ||
158ae64f VS |
1822 | static unsigned int ilk_display_fifo_size(const struct drm_device *dev) |
1823 | { | |
416f4727 VS |
1824 | if (INTEL_INFO(dev)->gen >= 8) |
1825 | return 3072; | |
1826 | else if (INTEL_INFO(dev)->gen >= 7) | |
158ae64f VS |
1827 | return 768; |
1828 | else | |
1829 | return 512; | |
1830 | } | |
1831 | ||
4e975081 VS |
1832 | static unsigned int ilk_plane_wm_reg_max(const struct drm_device *dev, |
1833 | int level, bool is_sprite) | |
1834 | { | |
1835 | if (INTEL_INFO(dev)->gen >= 8) | |
1836 | /* BDW primary/sprite plane watermarks */ | |
1837 | return level == 0 ? 255 : 2047; | |
1838 | else if (INTEL_INFO(dev)->gen >= 7) | |
1839 | /* IVB/HSW primary/sprite plane watermarks */ | |
1840 | return level == 0 ? 127 : 1023; | |
1841 | else if (!is_sprite) | |
1842 | /* ILK/SNB primary plane watermarks */ | |
1843 | return level == 0 ? 127 : 511; | |
1844 | else | |
1845 | /* ILK/SNB sprite plane watermarks */ | |
1846 | return level == 0 ? 63 : 255; | |
1847 | } | |
1848 | ||
1849 | static unsigned int ilk_cursor_wm_reg_max(const struct drm_device *dev, | |
1850 | int level) | |
1851 | { | |
1852 | if (INTEL_INFO(dev)->gen >= 7) | |
1853 | return level == 0 ? 63 : 255; | |
1854 | else | |
1855 | return level == 0 ? 31 : 63; | |
1856 | } | |
1857 | ||
1858 | static unsigned int ilk_fbc_wm_reg_max(const struct drm_device *dev) | |
1859 | { | |
1860 | if (INTEL_INFO(dev)->gen >= 8) | |
1861 | return 31; | |
1862 | else | |
1863 | return 15; | |
1864 | } | |
1865 | ||
158ae64f VS |
1866 | /* Calculate the maximum primary/sprite plane watermark */ |
1867 | static unsigned int ilk_plane_wm_max(const struct drm_device *dev, | |
1868 | int level, | |
240264f4 | 1869 | const struct intel_wm_config *config, |
158ae64f VS |
1870 | enum intel_ddb_partitioning ddb_partitioning, |
1871 | bool is_sprite) | |
1872 | { | |
1873 | unsigned int fifo_size = ilk_display_fifo_size(dev); | |
158ae64f VS |
1874 | |
1875 | /* if sprites aren't enabled, sprites get nothing */ | |
240264f4 | 1876 | if (is_sprite && !config->sprites_enabled) |
158ae64f VS |
1877 | return 0; |
1878 | ||
1879 | /* HSW allows LP1+ watermarks even with multiple pipes */ | |
240264f4 | 1880 | if (level == 0 || config->num_pipes_active > 1) { |
158ae64f VS |
1881 | fifo_size /= INTEL_INFO(dev)->num_pipes; |
1882 | ||
1883 | /* | |
1884 | * For some reason the non self refresh | |
1885 | * FIFO size is only half of the self | |
1886 | * refresh FIFO size on ILK/SNB. | |
1887 | */ | |
1888 | if (INTEL_INFO(dev)->gen <= 6) | |
1889 | fifo_size /= 2; | |
1890 | } | |
1891 | ||
240264f4 | 1892 | if (config->sprites_enabled) { |
158ae64f VS |
1893 | /* level 0 is always calculated with 1:1 split */ |
1894 | if (level > 0 && ddb_partitioning == INTEL_DDB_PART_5_6) { | |
1895 | if (is_sprite) | |
1896 | fifo_size *= 5; | |
1897 | fifo_size /= 6; | |
1898 | } else { | |
1899 | fifo_size /= 2; | |
1900 | } | |
1901 | } | |
1902 | ||
1903 | /* clamp to max that the registers can hold */ | |
4e975081 | 1904 | return min(fifo_size, ilk_plane_wm_reg_max(dev, level, is_sprite)); |
158ae64f VS |
1905 | } |
1906 | ||
1907 | /* Calculate the maximum cursor plane watermark */ | |
1908 | static unsigned int ilk_cursor_wm_max(const struct drm_device *dev, | |
240264f4 VS |
1909 | int level, |
1910 | const struct intel_wm_config *config) | |
158ae64f VS |
1911 | { |
1912 | /* HSW LP1+ watermarks w/ multiple pipes */ | |
240264f4 | 1913 | if (level > 0 && config->num_pipes_active > 1) |
158ae64f VS |
1914 | return 64; |
1915 | ||
1916 | /* otherwise just report max that registers can hold */ | |
4e975081 | 1917 | return ilk_cursor_wm_reg_max(dev, level); |
158ae64f VS |
1918 | } |
1919 | ||
d34ff9c6 | 1920 | static void ilk_compute_wm_maximums(const struct drm_device *dev, |
34982fe1 VS |
1921 | int level, |
1922 | const struct intel_wm_config *config, | |
1923 | enum intel_ddb_partitioning ddb_partitioning, | |
820c1980 | 1924 | struct ilk_wm_maximums *max) |
158ae64f | 1925 | { |
240264f4 VS |
1926 | max->pri = ilk_plane_wm_max(dev, level, config, ddb_partitioning, false); |
1927 | max->spr = ilk_plane_wm_max(dev, level, config, ddb_partitioning, true); | |
1928 | max->cur = ilk_cursor_wm_max(dev, level, config); | |
4e975081 | 1929 | max->fbc = ilk_fbc_wm_reg_max(dev); |
158ae64f VS |
1930 | } |
1931 | ||
a3cb4048 VS |
1932 | static void ilk_compute_wm_reg_maximums(struct drm_device *dev, |
1933 | int level, | |
1934 | struct ilk_wm_maximums *max) | |
1935 | { | |
1936 | max->pri = ilk_plane_wm_reg_max(dev, level, false); | |
1937 | max->spr = ilk_plane_wm_reg_max(dev, level, true); | |
1938 | max->cur = ilk_cursor_wm_reg_max(dev, level); | |
1939 | max->fbc = ilk_fbc_wm_reg_max(dev); | |
1940 | } | |
1941 | ||
d9395655 | 1942 | static bool ilk_validate_wm_level(int level, |
820c1980 | 1943 | const struct ilk_wm_maximums *max, |
d9395655 | 1944 | struct intel_wm_level *result) |
a9786a11 VS |
1945 | { |
1946 | bool ret; | |
1947 | ||
1948 | /* already determined to be invalid? */ | |
1949 | if (!result->enable) | |
1950 | return false; | |
1951 | ||
1952 | result->enable = result->pri_val <= max->pri && | |
1953 | result->spr_val <= max->spr && | |
1954 | result->cur_val <= max->cur; | |
1955 | ||
1956 | ret = result->enable; | |
1957 | ||
1958 | /* | |
1959 | * HACK until we can pre-compute everything, | |
1960 | * and thus fail gracefully if LP0 watermarks | |
1961 | * are exceeded... | |
1962 | */ | |
1963 | if (level == 0 && !result->enable) { | |
1964 | if (result->pri_val > max->pri) | |
1965 | DRM_DEBUG_KMS("Primary WM%d too large %u (max %u)\n", | |
1966 | level, result->pri_val, max->pri); | |
1967 | if (result->spr_val > max->spr) | |
1968 | DRM_DEBUG_KMS("Sprite WM%d too large %u (max %u)\n", | |
1969 | level, result->spr_val, max->spr); | |
1970 | if (result->cur_val > max->cur) | |
1971 | DRM_DEBUG_KMS("Cursor WM%d too large %u (max %u)\n", | |
1972 | level, result->cur_val, max->cur); | |
1973 | ||
1974 | result->pri_val = min_t(uint32_t, result->pri_val, max->pri); | |
1975 | result->spr_val = min_t(uint32_t, result->spr_val, max->spr); | |
1976 | result->cur_val = min_t(uint32_t, result->cur_val, max->cur); | |
1977 | result->enable = true; | |
1978 | } | |
1979 | ||
a9786a11 VS |
1980 | return ret; |
1981 | } | |
1982 | ||
d34ff9c6 | 1983 | static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv, |
43d59eda | 1984 | const struct intel_crtc *intel_crtc, |
6f5ddd17 | 1985 | int level, |
7221fc33 | 1986 | struct intel_crtc_state *cstate, |
86c8bbbe MR |
1987 | struct intel_plane_state *pristate, |
1988 | struct intel_plane_state *sprstate, | |
1989 | struct intel_plane_state *curstate, | |
1fd527cc | 1990 | struct intel_wm_level *result) |
6f5ddd17 VS |
1991 | { |
1992 | uint16_t pri_latency = dev_priv->wm.pri_latency[level]; | |
1993 | uint16_t spr_latency = dev_priv->wm.spr_latency[level]; | |
1994 | uint16_t cur_latency = dev_priv->wm.cur_latency[level]; | |
1995 | ||
1996 | /* WM1+ latency values stored in 0.5us units */ | |
1997 | if (level > 0) { | |
1998 | pri_latency *= 5; | |
1999 | spr_latency *= 5; | |
2000 | cur_latency *= 5; | |
2001 | } | |
2002 | ||
e3bddded ML |
2003 | if (pristate) { |
2004 | result->pri_val = ilk_compute_pri_wm(cstate, pristate, | |
2005 | pri_latency, level); | |
2006 | result->fbc_val = ilk_compute_fbc_wm(cstate, pristate, result->pri_val); | |
2007 | } | |
2008 | ||
2009 | if (sprstate) | |
2010 | result->spr_val = ilk_compute_spr_wm(cstate, sprstate, spr_latency); | |
2011 | ||
2012 | if (curstate) | |
2013 | result->cur_val = ilk_compute_cur_wm(cstate, curstate, cur_latency); | |
2014 | ||
6f5ddd17 VS |
2015 | result->enable = true; |
2016 | } | |
2017 | ||
801bcfff | 2018 | static uint32_t |
532f7a7f | 2019 | hsw_compute_linetime_wm(const struct intel_crtc_state *cstate) |
1f8eeabf | 2020 | { |
532f7a7f VS |
2021 | const struct intel_atomic_state *intel_state = |
2022 | to_intel_atomic_state(cstate->base.state); | |
ee91a159 MR |
2023 | const struct drm_display_mode *adjusted_mode = |
2024 | &cstate->base.adjusted_mode; | |
85a02deb | 2025 | u32 linetime, ips_linetime; |
1f8eeabf | 2026 | |
ee91a159 MR |
2027 | if (!cstate->base.active) |
2028 | return 0; | |
2029 | if (WARN_ON(adjusted_mode->crtc_clock == 0)) | |
2030 | return 0; | |
532f7a7f | 2031 | if (WARN_ON(intel_state->cdclk == 0)) |
801bcfff | 2032 | return 0; |
1011d8c4 | 2033 | |
1f8eeabf ED |
2034 | /* The WM are computed with base on how long it takes to fill a single |
2035 | * row at the given clock rate, multiplied by 8. | |
2036 | * */ | |
124abe07 VS |
2037 | linetime = DIV_ROUND_CLOSEST(adjusted_mode->crtc_htotal * 1000 * 8, |
2038 | adjusted_mode->crtc_clock); | |
2039 | ips_linetime = DIV_ROUND_CLOSEST(adjusted_mode->crtc_htotal * 1000 * 8, | |
532f7a7f | 2040 | intel_state->cdclk); |
1f8eeabf | 2041 | |
801bcfff PZ |
2042 | return PIPE_WM_LINETIME_IPS_LINETIME(ips_linetime) | |
2043 | PIPE_WM_LINETIME_TIME(linetime); | |
1f8eeabf ED |
2044 | } |
2045 | ||
2af30a5c | 2046 | static void intel_read_wm_latency(struct drm_device *dev, uint16_t wm[8]) |
12b134df VS |
2047 | { |
2048 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2049 | ||
2af30a5c PB |
2050 | if (IS_GEN9(dev)) { |
2051 | uint32_t val; | |
4f947386 | 2052 | int ret, i; |
367294be | 2053 | int level, max_level = ilk_wm_max_level(dev); |
2af30a5c PB |
2054 | |
2055 | /* read the first set of memory latencies[0:3] */ | |
2056 | val = 0; /* data0 to be programmed to 0 for first set */ | |
2057 | mutex_lock(&dev_priv->rps.hw_lock); | |
2058 | ret = sandybridge_pcode_read(dev_priv, | |
2059 | GEN9_PCODE_READ_MEM_LATENCY, | |
2060 | &val); | |
2061 | mutex_unlock(&dev_priv->rps.hw_lock); | |
2062 | ||
2063 | if (ret) { | |
2064 | DRM_ERROR("SKL Mailbox read error = %d\n", ret); | |
2065 | return; | |
2066 | } | |
2067 | ||
2068 | wm[0] = val & GEN9_MEM_LATENCY_LEVEL_MASK; | |
2069 | wm[1] = (val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) & | |
2070 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2071 | wm[2] = (val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) & | |
2072 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2073 | wm[3] = (val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) & | |
2074 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2075 | ||
2076 | /* read the second set of memory latencies[4:7] */ | |
2077 | val = 1; /* data0 to be programmed to 1 for second set */ | |
2078 | mutex_lock(&dev_priv->rps.hw_lock); | |
2079 | ret = sandybridge_pcode_read(dev_priv, | |
2080 | GEN9_PCODE_READ_MEM_LATENCY, | |
2081 | &val); | |
2082 | mutex_unlock(&dev_priv->rps.hw_lock); | |
2083 | if (ret) { | |
2084 | DRM_ERROR("SKL Mailbox read error = %d\n", ret); | |
2085 | return; | |
2086 | } | |
2087 | ||
2088 | wm[4] = val & GEN9_MEM_LATENCY_LEVEL_MASK; | |
2089 | wm[5] = (val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) & | |
2090 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2091 | wm[6] = (val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) & | |
2092 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2093 | wm[7] = (val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) & | |
2094 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2095 | ||
367294be | 2096 | /* |
6f97235b DL |
2097 | * WaWmMemoryReadLatency:skl |
2098 | * | |
367294be VK |
2099 | * punit doesn't take into account the read latency so we need |
2100 | * to add 2us to the various latency levels we retrieve from | |
2101 | * the punit. | |
2102 | * - W0 is a bit special in that it's the only level that | |
2103 | * can't be disabled if we want to have display working, so | |
2104 | * we always add 2us there. | |
2105 | * - For levels >=1, punit returns 0us latency when they are | |
2106 | * disabled, so we respect that and don't add 2us then | |
4f947386 VK |
2107 | * |
2108 | * Additionally, if a level n (n > 1) has a 0us latency, all | |
2109 | * levels m (m >= n) need to be disabled. We make sure to | |
2110 | * sanitize the values out of the punit to satisfy this | |
2111 | * requirement. | |
367294be VK |
2112 | */ |
2113 | wm[0] += 2; | |
2114 | for (level = 1; level <= max_level; level++) | |
2115 | if (wm[level] != 0) | |
2116 | wm[level] += 2; | |
4f947386 VK |
2117 | else { |
2118 | for (i = level + 1; i <= max_level; i++) | |
2119 | wm[i] = 0; | |
367294be | 2120 | |
4f947386 VK |
2121 | break; |
2122 | } | |
2af30a5c | 2123 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
12b134df VS |
2124 | uint64_t sskpd = I915_READ64(MCH_SSKPD); |
2125 | ||
2126 | wm[0] = (sskpd >> 56) & 0xFF; | |
2127 | if (wm[0] == 0) | |
2128 | wm[0] = sskpd & 0xF; | |
e5d5019e VS |
2129 | wm[1] = (sskpd >> 4) & 0xFF; |
2130 | wm[2] = (sskpd >> 12) & 0xFF; | |
2131 | wm[3] = (sskpd >> 20) & 0x1FF; | |
2132 | wm[4] = (sskpd >> 32) & 0x1FF; | |
63cf9a13 VS |
2133 | } else if (INTEL_INFO(dev)->gen >= 6) { |
2134 | uint32_t sskpd = I915_READ(MCH_SSKPD); | |
2135 | ||
2136 | wm[0] = (sskpd >> SSKPD_WM0_SHIFT) & SSKPD_WM_MASK; | |
2137 | wm[1] = (sskpd >> SSKPD_WM1_SHIFT) & SSKPD_WM_MASK; | |
2138 | wm[2] = (sskpd >> SSKPD_WM2_SHIFT) & SSKPD_WM_MASK; | |
2139 | wm[3] = (sskpd >> SSKPD_WM3_SHIFT) & SSKPD_WM_MASK; | |
3a88d0ac VS |
2140 | } else if (INTEL_INFO(dev)->gen >= 5) { |
2141 | uint32_t mltr = I915_READ(MLTR_ILK); | |
2142 | ||
2143 | /* ILK primary LP0 latency is 700 ns */ | |
2144 | wm[0] = 7; | |
2145 | wm[1] = (mltr >> MLTR_WM1_SHIFT) & ILK_SRLT_MASK; | |
2146 | wm[2] = (mltr >> MLTR_WM2_SHIFT) & ILK_SRLT_MASK; | |
12b134df VS |
2147 | } |
2148 | } | |
2149 | ||
53615a5e VS |
2150 | static void intel_fixup_spr_wm_latency(struct drm_device *dev, uint16_t wm[5]) |
2151 | { | |
2152 | /* ILK sprite LP0 latency is 1300 ns */ | |
7e22dbbb | 2153 | if (IS_GEN5(dev)) |
53615a5e VS |
2154 | wm[0] = 13; |
2155 | } | |
2156 | ||
2157 | static void intel_fixup_cur_wm_latency(struct drm_device *dev, uint16_t wm[5]) | |
2158 | { | |
2159 | /* ILK cursor LP0 latency is 1300 ns */ | |
7e22dbbb | 2160 | if (IS_GEN5(dev)) |
53615a5e VS |
2161 | wm[0] = 13; |
2162 | ||
2163 | /* WaDoubleCursorLP3Latency:ivb */ | |
2164 | if (IS_IVYBRIDGE(dev)) | |
2165 | wm[3] *= 2; | |
2166 | } | |
2167 | ||
546c81fd | 2168 | int ilk_wm_max_level(const struct drm_device *dev) |
26ec971e | 2169 | { |
26ec971e | 2170 | /* how many WM levels are we expecting */ |
b6e742f6 | 2171 | if (INTEL_INFO(dev)->gen >= 9) |
2af30a5c PB |
2172 | return 7; |
2173 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
ad0d6dc4 | 2174 | return 4; |
26ec971e | 2175 | else if (INTEL_INFO(dev)->gen >= 6) |
ad0d6dc4 | 2176 | return 3; |
26ec971e | 2177 | else |
ad0d6dc4 VS |
2178 | return 2; |
2179 | } | |
7526ed79 | 2180 | |
ad0d6dc4 VS |
2181 | static void intel_print_wm_latency(struct drm_device *dev, |
2182 | const char *name, | |
2af30a5c | 2183 | const uint16_t wm[8]) |
ad0d6dc4 VS |
2184 | { |
2185 | int level, max_level = ilk_wm_max_level(dev); | |
26ec971e VS |
2186 | |
2187 | for (level = 0; level <= max_level; level++) { | |
2188 | unsigned int latency = wm[level]; | |
2189 | ||
2190 | if (latency == 0) { | |
2191 | DRM_ERROR("%s WM%d latency not provided\n", | |
2192 | name, level); | |
2193 | continue; | |
2194 | } | |
2195 | ||
2af30a5c PB |
2196 | /* |
2197 | * - latencies are in us on gen9. | |
2198 | * - before then, WM1+ latency values are in 0.5us units | |
2199 | */ | |
2200 | if (IS_GEN9(dev)) | |
2201 | latency *= 10; | |
2202 | else if (level > 0) | |
26ec971e VS |
2203 | latency *= 5; |
2204 | ||
2205 | DRM_DEBUG_KMS("%s WM%d latency %u (%u.%u usec)\n", | |
2206 | name, level, wm[level], | |
2207 | latency / 10, latency % 10); | |
2208 | } | |
2209 | } | |
2210 | ||
e95a2f75 VS |
2211 | static bool ilk_increase_wm_latency(struct drm_i915_private *dev_priv, |
2212 | uint16_t wm[5], uint16_t min) | |
2213 | { | |
2214 | int level, max_level = ilk_wm_max_level(dev_priv->dev); | |
2215 | ||
2216 | if (wm[0] >= min) | |
2217 | return false; | |
2218 | ||
2219 | wm[0] = max(wm[0], min); | |
2220 | for (level = 1; level <= max_level; level++) | |
2221 | wm[level] = max_t(uint16_t, wm[level], DIV_ROUND_UP(min, 5)); | |
2222 | ||
2223 | return true; | |
2224 | } | |
2225 | ||
2226 | static void snb_wm_latency_quirk(struct drm_device *dev) | |
2227 | { | |
2228 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2229 | bool changed; | |
2230 | ||
2231 | /* | |
2232 | * The BIOS provided WM memory latency values are often | |
2233 | * inadequate for high resolution displays. Adjust them. | |
2234 | */ | |
2235 | changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12) | | |
2236 | ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12) | | |
2237 | ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12); | |
2238 | ||
2239 | if (!changed) | |
2240 | return; | |
2241 | ||
2242 | DRM_DEBUG_KMS("WM latency values increased to avoid potential underruns\n"); | |
2243 | intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); | |
2244 | intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); | |
2245 | intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); | |
2246 | } | |
2247 | ||
fa50ad61 | 2248 | static void ilk_setup_wm_latency(struct drm_device *dev) |
53615a5e VS |
2249 | { |
2250 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2251 | ||
2252 | intel_read_wm_latency(dev, dev_priv->wm.pri_latency); | |
2253 | ||
2254 | memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency, | |
2255 | sizeof(dev_priv->wm.pri_latency)); | |
2256 | memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency, | |
2257 | sizeof(dev_priv->wm.pri_latency)); | |
2258 | ||
2259 | intel_fixup_spr_wm_latency(dev, dev_priv->wm.spr_latency); | |
2260 | intel_fixup_cur_wm_latency(dev, dev_priv->wm.cur_latency); | |
26ec971e VS |
2261 | |
2262 | intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); | |
2263 | intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); | |
2264 | intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); | |
e95a2f75 VS |
2265 | |
2266 | if (IS_GEN6(dev)) | |
2267 | snb_wm_latency_quirk(dev); | |
53615a5e VS |
2268 | } |
2269 | ||
2af30a5c PB |
2270 | static void skl_setup_wm_latency(struct drm_device *dev) |
2271 | { | |
2272 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2273 | ||
2274 | intel_read_wm_latency(dev, dev_priv->wm.skl_latency); | |
2275 | intel_print_wm_latency(dev, "Gen9 Plane", dev_priv->wm.skl_latency); | |
2276 | } | |
2277 | ||
ed4a6a7c MR |
2278 | static bool ilk_validate_pipe_wm(struct drm_device *dev, |
2279 | struct intel_pipe_wm *pipe_wm) | |
2280 | { | |
2281 | /* LP0 watermark maximums depend on this pipe alone */ | |
2282 | const struct intel_wm_config config = { | |
2283 | .num_pipes_active = 1, | |
2284 | .sprites_enabled = pipe_wm->sprites_enabled, | |
2285 | .sprites_scaled = pipe_wm->sprites_scaled, | |
2286 | }; | |
2287 | struct ilk_wm_maximums max; | |
2288 | ||
2289 | /* LP0 watermarks always use 1/2 DDB partitioning */ | |
2290 | ilk_compute_wm_maximums(dev, 0, &config, INTEL_DDB_PART_1_2, &max); | |
2291 | ||
2292 | /* At least LP0 must be valid */ | |
2293 | if (!ilk_validate_wm_level(0, &max, &pipe_wm->wm[0])) { | |
2294 | DRM_DEBUG_KMS("LP0 watermark invalid\n"); | |
2295 | return false; | |
2296 | } | |
2297 | ||
2298 | return true; | |
2299 | } | |
2300 | ||
0b2ae6d7 | 2301 | /* Compute new watermarks for the pipe */ |
e3bddded | 2302 | static int ilk_compute_pipe_wm(struct intel_crtc_state *cstate) |
0b2ae6d7 | 2303 | { |
e3bddded ML |
2304 | struct drm_atomic_state *state = cstate->base.state; |
2305 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); | |
86c8bbbe | 2306 | struct intel_pipe_wm *pipe_wm; |
e3bddded | 2307 | struct drm_device *dev = state->dev; |
d34ff9c6 | 2308 | const struct drm_i915_private *dev_priv = dev->dev_private; |
43d59eda | 2309 | struct intel_plane *intel_plane; |
86c8bbbe | 2310 | struct intel_plane_state *pristate = NULL; |
43d59eda | 2311 | struct intel_plane_state *sprstate = NULL; |
86c8bbbe | 2312 | struct intel_plane_state *curstate = NULL; |
d81f04c5 | 2313 | int level, max_level = ilk_wm_max_level(dev), usable_level; |
820c1980 | 2314 | struct ilk_wm_maximums max; |
0b2ae6d7 | 2315 | |
e8f1f02e | 2316 | pipe_wm = &cstate->wm.ilk.optimal; |
86c8bbbe | 2317 | |
43d59eda | 2318 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { |
e3bddded ML |
2319 | struct intel_plane_state *ps; |
2320 | ||
2321 | ps = intel_atomic_get_existing_plane_state(state, | |
2322 | intel_plane); | |
2323 | if (!ps) | |
2324 | continue; | |
86c8bbbe MR |
2325 | |
2326 | if (intel_plane->base.type == DRM_PLANE_TYPE_PRIMARY) | |
e3bddded | 2327 | pristate = ps; |
86c8bbbe | 2328 | else if (intel_plane->base.type == DRM_PLANE_TYPE_OVERLAY) |
e3bddded | 2329 | sprstate = ps; |
86c8bbbe | 2330 | else if (intel_plane->base.type == DRM_PLANE_TYPE_CURSOR) |
e3bddded | 2331 | curstate = ps; |
43d59eda MR |
2332 | } |
2333 | ||
ed4a6a7c | 2334 | pipe_wm->pipe_enabled = cstate->base.active; |
e3bddded ML |
2335 | if (sprstate) { |
2336 | pipe_wm->sprites_enabled = sprstate->visible; | |
2337 | pipe_wm->sprites_scaled = sprstate->visible && | |
2338 | (drm_rect_width(&sprstate->dst) != drm_rect_width(&sprstate->src) >> 16 || | |
2339 | drm_rect_height(&sprstate->dst) != drm_rect_height(&sprstate->src) >> 16); | |
2340 | } | |
2341 | ||
d81f04c5 ML |
2342 | usable_level = max_level; |
2343 | ||
7b39a0b7 | 2344 | /* ILK/SNB: LP2+ watermarks only w/o sprites */ |
e3bddded | 2345 | if (INTEL_INFO(dev)->gen <= 6 && pipe_wm->sprites_enabled) |
d81f04c5 | 2346 | usable_level = 1; |
7b39a0b7 VS |
2347 | |
2348 | /* ILK/SNB/IVB: LP1+ watermarks only w/o scaling */ | |
ed4a6a7c | 2349 | if (pipe_wm->sprites_scaled) |
d81f04c5 | 2350 | usable_level = 0; |
7b39a0b7 | 2351 | |
86c8bbbe | 2352 | ilk_compute_wm_level(dev_priv, intel_crtc, 0, cstate, |
71f0a626 ML |
2353 | pristate, sprstate, curstate, &pipe_wm->raw_wm[0]); |
2354 | ||
2355 | memset(&pipe_wm->wm, 0, sizeof(pipe_wm->wm)); | |
2356 | pipe_wm->wm[0] = pipe_wm->raw_wm[0]; | |
0b2ae6d7 | 2357 | |
a42a5719 | 2358 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
532f7a7f | 2359 | pipe_wm->linetime = hsw_compute_linetime_wm(cstate); |
0b2ae6d7 | 2360 | |
ed4a6a7c | 2361 | if (!ilk_validate_pipe_wm(dev, pipe_wm)) |
1a426d61 | 2362 | return -EINVAL; |
a3cb4048 VS |
2363 | |
2364 | ilk_compute_wm_reg_maximums(dev, 1, &max); | |
2365 | ||
2366 | for (level = 1; level <= max_level; level++) { | |
71f0a626 | 2367 | struct intel_wm_level *wm = &pipe_wm->raw_wm[level]; |
a3cb4048 | 2368 | |
86c8bbbe | 2369 | ilk_compute_wm_level(dev_priv, intel_crtc, level, cstate, |
d81f04c5 | 2370 | pristate, sprstate, curstate, wm); |
a3cb4048 VS |
2371 | |
2372 | /* | |
2373 | * Disable any watermark level that exceeds the | |
2374 | * register maximums since such watermarks are | |
2375 | * always invalid. | |
2376 | */ | |
71f0a626 ML |
2377 | if (level > usable_level) |
2378 | continue; | |
2379 | ||
2380 | if (ilk_validate_wm_level(level, &max, wm)) | |
2381 | pipe_wm->wm[level] = *wm; | |
2382 | else | |
d81f04c5 | 2383 | usable_level = level; |
a3cb4048 VS |
2384 | } |
2385 | ||
86c8bbbe | 2386 | return 0; |
0b2ae6d7 VS |
2387 | } |
2388 | ||
ed4a6a7c MR |
2389 | /* |
2390 | * Build a set of 'intermediate' watermark values that satisfy both the old | |
2391 | * state and the new state. These can be programmed to the hardware | |
2392 | * immediately. | |
2393 | */ | |
2394 | static int ilk_compute_intermediate_wm(struct drm_device *dev, | |
2395 | struct intel_crtc *intel_crtc, | |
2396 | struct intel_crtc_state *newstate) | |
2397 | { | |
e8f1f02e | 2398 | struct intel_pipe_wm *a = &newstate->wm.ilk.intermediate; |
ed4a6a7c MR |
2399 | struct intel_pipe_wm *b = &intel_crtc->wm.active.ilk; |
2400 | int level, max_level = ilk_wm_max_level(dev); | |
2401 | ||
2402 | /* | |
2403 | * Start with the final, target watermarks, then combine with the | |
2404 | * currently active watermarks to get values that are safe both before | |
2405 | * and after the vblank. | |
2406 | */ | |
e8f1f02e | 2407 | *a = newstate->wm.ilk.optimal; |
ed4a6a7c MR |
2408 | a->pipe_enabled |= b->pipe_enabled; |
2409 | a->sprites_enabled |= b->sprites_enabled; | |
2410 | a->sprites_scaled |= b->sprites_scaled; | |
2411 | ||
2412 | for (level = 0; level <= max_level; level++) { | |
2413 | struct intel_wm_level *a_wm = &a->wm[level]; | |
2414 | const struct intel_wm_level *b_wm = &b->wm[level]; | |
2415 | ||
2416 | a_wm->enable &= b_wm->enable; | |
2417 | a_wm->pri_val = max(a_wm->pri_val, b_wm->pri_val); | |
2418 | a_wm->spr_val = max(a_wm->spr_val, b_wm->spr_val); | |
2419 | a_wm->cur_val = max(a_wm->cur_val, b_wm->cur_val); | |
2420 | a_wm->fbc_val = max(a_wm->fbc_val, b_wm->fbc_val); | |
2421 | } | |
2422 | ||
2423 | /* | |
2424 | * We need to make sure that these merged watermark values are | |
2425 | * actually a valid configuration themselves. If they're not, | |
2426 | * there's no safe way to transition from the old state to | |
2427 | * the new state, so we need to fail the atomic transaction. | |
2428 | */ | |
2429 | if (!ilk_validate_pipe_wm(dev, a)) | |
2430 | return -EINVAL; | |
2431 | ||
2432 | /* | |
2433 | * If our intermediate WM are identical to the final WM, then we can | |
2434 | * omit the post-vblank programming; only update if it's different. | |
2435 | */ | |
e8f1f02e | 2436 | if (memcmp(a, &newstate->wm.ilk.optimal, sizeof(*a)) == 0) |
ed4a6a7c MR |
2437 | newstate->wm.need_postvbl_update = false; |
2438 | ||
2439 | return 0; | |
2440 | } | |
2441 | ||
0b2ae6d7 VS |
2442 | /* |
2443 | * Merge the watermarks from all active pipes for a specific level. | |
2444 | */ | |
2445 | static void ilk_merge_wm_level(struct drm_device *dev, | |
2446 | int level, | |
2447 | struct intel_wm_level *ret_wm) | |
2448 | { | |
2449 | const struct intel_crtc *intel_crtc; | |
2450 | ||
d52fea5b VS |
2451 | ret_wm->enable = true; |
2452 | ||
d3fcc808 | 2453 | for_each_intel_crtc(dev, intel_crtc) { |
ed4a6a7c | 2454 | const struct intel_pipe_wm *active = &intel_crtc->wm.active.ilk; |
fe392efd VS |
2455 | const struct intel_wm_level *wm = &active->wm[level]; |
2456 | ||
2457 | if (!active->pipe_enabled) | |
2458 | continue; | |
0b2ae6d7 | 2459 | |
d52fea5b VS |
2460 | /* |
2461 | * The watermark values may have been used in the past, | |
2462 | * so we must maintain them in the registers for some | |
2463 | * time even if the level is now disabled. | |
2464 | */ | |
0b2ae6d7 | 2465 | if (!wm->enable) |
d52fea5b | 2466 | ret_wm->enable = false; |
0b2ae6d7 VS |
2467 | |
2468 | ret_wm->pri_val = max(ret_wm->pri_val, wm->pri_val); | |
2469 | ret_wm->spr_val = max(ret_wm->spr_val, wm->spr_val); | |
2470 | ret_wm->cur_val = max(ret_wm->cur_val, wm->cur_val); | |
2471 | ret_wm->fbc_val = max(ret_wm->fbc_val, wm->fbc_val); | |
2472 | } | |
0b2ae6d7 VS |
2473 | } |
2474 | ||
2475 | /* | |
2476 | * Merge all low power watermarks for all active pipes. | |
2477 | */ | |
2478 | static void ilk_wm_merge(struct drm_device *dev, | |
0ba22e26 | 2479 | const struct intel_wm_config *config, |
820c1980 | 2480 | const struct ilk_wm_maximums *max, |
0b2ae6d7 VS |
2481 | struct intel_pipe_wm *merged) |
2482 | { | |
7733b49b | 2483 | struct drm_i915_private *dev_priv = dev->dev_private; |
0b2ae6d7 | 2484 | int level, max_level = ilk_wm_max_level(dev); |
d52fea5b | 2485 | int last_enabled_level = max_level; |
0b2ae6d7 | 2486 | |
0ba22e26 VS |
2487 | /* ILK/SNB/IVB: LP1+ watermarks only w/ single pipe */ |
2488 | if ((INTEL_INFO(dev)->gen <= 6 || IS_IVYBRIDGE(dev)) && | |
2489 | config->num_pipes_active > 1) | |
1204d5ba | 2490 | last_enabled_level = 0; |
0ba22e26 | 2491 | |
6c8b6c28 VS |
2492 | /* ILK: FBC WM must be disabled always */ |
2493 | merged->fbc_wm_enabled = INTEL_INFO(dev)->gen >= 6; | |
0b2ae6d7 VS |
2494 | |
2495 | /* merge each WM1+ level */ | |
2496 | for (level = 1; level <= max_level; level++) { | |
2497 | struct intel_wm_level *wm = &merged->wm[level]; | |
2498 | ||
2499 | ilk_merge_wm_level(dev, level, wm); | |
2500 | ||
d52fea5b VS |
2501 | if (level > last_enabled_level) |
2502 | wm->enable = false; | |
2503 | else if (!ilk_validate_wm_level(level, max, wm)) | |
2504 | /* make sure all following levels get disabled */ | |
2505 | last_enabled_level = level - 1; | |
0b2ae6d7 VS |
2506 | |
2507 | /* | |
2508 | * The spec says it is preferred to disable | |
2509 | * FBC WMs instead of disabling a WM level. | |
2510 | */ | |
2511 | if (wm->fbc_val > max->fbc) { | |
d52fea5b VS |
2512 | if (wm->enable) |
2513 | merged->fbc_wm_enabled = false; | |
0b2ae6d7 VS |
2514 | wm->fbc_val = 0; |
2515 | } | |
2516 | } | |
6c8b6c28 VS |
2517 | |
2518 | /* ILK: LP2+ must be disabled when FBC WM is disabled but FBC enabled */ | |
2519 | /* | |
2520 | * FIXME this is racy. FBC might get enabled later. | |
2521 | * What we should check here is whether FBC can be | |
2522 | * enabled sometime later. | |
2523 | */ | |
7733b49b | 2524 | if (IS_GEN5(dev) && !merged->fbc_wm_enabled && |
0e631adc | 2525 | intel_fbc_is_active(dev_priv)) { |
6c8b6c28 VS |
2526 | for (level = 2; level <= max_level; level++) { |
2527 | struct intel_wm_level *wm = &merged->wm[level]; | |
2528 | ||
2529 | wm->enable = false; | |
2530 | } | |
2531 | } | |
0b2ae6d7 VS |
2532 | } |
2533 | ||
b380ca3c VS |
2534 | static int ilk_wm_lp_to_level(int wm_lp, const struct intel_pipe_wm *pipe_wm) |
2535 | { | |
2536 | /* LP1,LP2,LP3 levels are either 1,2,3 or 1,3,4 */ | |
2537 | return wm_lp + (wm_lp >= 2 && pipe_wm->wm[4].enable); | |
2538 | } | |
2539 | ||
a68d68ee VS |
2540 | /* The value we need to program into the WM_LPx latency field */ |
2541 | static unsigned int ilk_wm_lp_latency(struct drm_device *dev, int level) | |
2542 | { | |
2543 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2544 | ||
a42a5719 | 2545 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
a68d68ee VS |
2546 | return 2 * level; |
2547 | else | |
2548 | return dev_priv->wm.pri_latency[level]; | |
2549 | } | |
2550 | ||
820c1980 | 2551 | static void ilk_compute_wm_results(struct drm_device *dev, |
0362c781 | 2552 | const struct intel_pipe_wm *merged, |
609cedef | 2553 | enum intel_ddb_partitioning partitioning, |
820c1980 | 2554 | struct ilk_wm_values *results) |
801bcfff | 2555 | { |
0b2ae6d7 VS |
2556 | struct intel_crtc *intel_crtc; |
2557 | int level, wm_lp; | |
cca32e9a | 2558 | |
0362c781 | 2559 | results->enable_fbc_wm = merged->fbc_wm_enabled; |
609cedef | 2560 | results->partitioning = partitioning; |
cca32e9a | 2561 | |
0b2ae6d7 | 2562 | /* LP1+ register values */ |
cca32e9a | 2563 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { |
1fd527cc | 2564 | const struct intel_wm_level *r; |
801bcfff | 2565 | |
b380ca3c | 2566 | level = ilk_wm_lp_to_level(wm_lp, merged); |
0b2ae6d7 | 2567 | |
0362c781 | 2568 | r = &merged->wm[level]; |
cca32e9a | 2569 | |
d52fea5b VS |
2570 | /* |
2571 | * Maintain the watermark values even if the level is | |
2572 | * disabled. Doing otherwise could cause underruns. | |
2573 | */ | |
2574 | results->wm_lp[wm_lp - 1] = | |
a68d68ee | 2575 | (ilk_wm_lp_latency(dev, level) << WM1_LP_LATENCY_SHIFT) | |
416f4727 VS |
2576 | (r->pri_val << WM1_LP_SR_SHIFT) | |
2577 | r->cur_val; | |
2578 | ||
d52fea5b VS |
2579 | if (r->enable) |
2580 | results->wm_lp[wm_lp - 1] |= WM1_LP_SR_EN; | |
2581 | ||
416f4727 VS |
2582 | if (INTEL_INFO(dev)->gen >= 8) |
2583 | results->wm_lp[wm_lp - 1] |= | |
2584 | r->fbc_val << WM1_LP_FBC_SHIFT_BDW; | |
2585 | else | |
2586 | results->wm_lp[wm_lp - 1] |= | |
2587 | r->fbc_val << WM1_LP_FBC_SHIFT; | |
2588 | ||
d52fea5b VS |
2589 | /* |
2590 | * Always set WM1S_LP_EN when spr_val != 0, even if the | |
2591 | * level is disabled. Doing otherwise could cause underruns. | |
2592 | */ | |
6cef2b8a VS |
2593 | if (INTEL_INFO(dev)->gen <= 6 && r->spr_val) { |
2594 | WARN_ON(wm_lp != 1); | |
2595 | results->wm_lp_spr[wm_lp - 1] = WM1S_LP_EN | r->spr_val; | |
2596 | } else | |
2597 | results->wm_lp_spr[wm_lp - 1] = r->spr_val; | |
cca32e9a | 2598 | } |
801bcfff | 2599 | |
0b2ae6d7 | 2600 | /* LP0 register values */ |
d3fcc808 | 2601 | for_each_intel_crtc(dev, intel_crtc) { |
0b2ae6d7 | 2602 | enum pipe pipe = intel_crtc->pipe; |
ed4a6a7c MR |
2603 | const struct intel_wm_level *r = |
2604 | &intel_crtc->wm.active.ilk.wm[0]; | |
0b2ae6d7 VS |
2605 | |
2606 | if (WARN_ON(!r->enable)) | |
2607 | continue; | |
2608 | ||
ed4a6a7c | 2609 | results->wm_linetime[pipe] = intel_crtc->wm.active.ilk.linetime; |
1011d8c4 | 2610 | |
0b2ae6d7 VS |
2611 | results->wm_pipe[pipe] = |
2612 | (r->pri_val << WM0_PIPE_PLANE_SHIFT) | | |
2613 | (r->spr_val << WM0_PIPE_SPRITE_SHIFT) | | |
2614 | r->cur_val; | |
801bcfff PZ |
2615 | } |
2616 | } | |
2617 | ||
861f3389 PZ |
2618 | /* Find the result with the highest level enabled. Check for enable_fbc_wm in |
2619 | * case both are at the same level. Prefer r1 in case they're the same. */ | |
820c1980 | 2620 | static struct intel_pipe_wm *ilk_find_best_result(struct drm_device *dev, |
198a1e9b VS |
2621 | struct intel_pipe_wm *r1, |
2622 | struct intel_pipe_wm *r2) | |
861f3389 | 2623 | { |
198a1e9b VS |
2624 | int level, max_level = ilk_wm_max_level(dev); |
2625 | int level1 = 0, level2 = 0; | |
861f3389 | 2626 | |
198a1e9b VS |
2627 | for (level = 1; level <= max_level; level++) { |
2628 | if (r1->wm[level].enable) | |
2629 | level1 = level; | |
2630 | if (r2->wm[level].enable) | |
2631 | level2 = level; | |
861f3389 PZ |
2632 | } |
2633 | ||
198a1e9b VS |
2634 | if (level1 == level2) { |
2635 | if (r2->fbc_wm_enabled && !r1->fbc_wm_enabled) | |
861f3389 PZ |
2636 | return r2; |
2637 | else | |
2638 | return r1; | |
198a1e9b | 2639 | } else if (level1 > level2) { |
861f3389 PZ |
2640 | return r1; |
2641 | } else { | |
2642 | return r2; | |
2643 | } | |
2644 | } | |
2645 | ||
49a687c4 VS |
2646 | /* dirty bits used to track which watermarks need changes */ |
2647 | #define WM_DIRTY_PIPE(pipe) (1 << (pipe)) | |
2648 | #define WM_DIRTY_LINETIME(pipe) (1 << (8 + (pipe))) | |
2649 | #define WM_DIRTY_LP(wm_lp) (1 << (15 + (wm_lp))) | |
2650 | #define WM_DIRTY_LP_ALL (WM_DIRTY_LP(1) | WM_DIRTY_LP(2) | WM_DIRTY_LP(3)) | |
2651 | #define WM_DIRTY_FBC (1 << 24) | |
2652 | #define WM_DIRTY_DDB (1 << 25) | |
2653 | ||
055e393f | 2654 | static unsigned int ilk_compute_wm_dirty(struct drm_i915_private *dev_priv, |
820c1980 ID |
2655 | const struct ilk_wm_values *old, |
2656 | const struct ilk_wm_values *new) | |
49a687c4 VS |
2657 | { |
2658 | unsigned int dirty = 0; | |
2659 | enum pipe pipe; | |
2660 | int wm_lp; | |
2661 | ||
055e393f | 2662 | for_each_pipe(dev_priv, pipe) { |
49a687c4 VS |
2663 | if (old->wm_linetime[pipe] != new->wm_linetime[pipe]) { |
2664 | dirty |= WM_DIRTY_LINETIME(pipe); | |
2665 | /* Must disable LP1+ watermarks too */ | |
2666 | dirty |= WM_DIRTY_LP_ALL; | |
2667 | } | |
2668 | ||
2669 | if (old->wm_pipe[pipe] != new->wm_pipe[pipe]) { | |
2670 | dirty |= WM_DIRTY_PIPE(pipe); | |
2671 | /* Must disable LP1+ watermarks too */ | |
2672 | dirty |= WM_DIRTY_LP_ALL; | |
2673 | } | |
2674 | } | |
2675 | ||
2676 | if (old->enable_fbc_wm != new->enable_fbc_wm) { | |
2677 | dirty |= WM_DIRTY_FBC; | |
2678 | /* Must disable LP1+ watermarks too */ | |
2679 | dirty |= WM_DIRTY_LP_ALL; | |
2680 | } | |
2681 | ||
2682 | if (old->partitioning != new->partitioning) { | |
2683 | dirty |= WM_DIRTY_DDB; | |
2684 | /* Must disable LP1+ watermarks too */ | |
2685 | dirty |= WM_DIRTY_LP_ALL; | |
2686 | } | |
2687 | ||
2688 | /* LP1+ watermarks already deemed dirty, no need to continue */ | |
2689 | if (dirty & WM_DIRTY_LP_ALL) | |
2690 | return dirty; | |
2691 | ||
2692 | /* Find the lowest numbered LP1+ watermark in need of an update... */ | |
2693 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { | |
2694 | if (old->wm_lp[wm_lp - 1] != new->wm_lp[wm_lp - 1] || | |
2695 | old->wm_lp_spr[wm_lp - 1] != new->wm_lp_spr[wm_lp - 1]) | |
2696 | break; | |
2697 | } | |
2698 | ||
2699 | /* ...and mark it and all higher numbered LP1+ watermarks as dirty */ | |
2700 | for (; wm_lp <= 3; wm_lp++) | |
2701 | dirty |= WM_DIRTY_LP(wm_lp); | |
2702 | ||
2703 | return dirty; | |
2704 | } | |
2705 | ||
8553c18e VS |
2706 | static bool _ilk_disable_lp_wm(struct drm_i915_private *dev_priv, |
2707 | unsigned int dirty) | |
801bcfff | 2708 | { |
820c1980 | 2709 | struct ilk_wm_values *previous = &dev_priv->wm.hw; |
8553c18e | 2710 | bool changed = false; |
801bcfff | 2711 | |
facd619b VS |
2712 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] & WM1_LP_SR_EN) { |
2713 | previous->wm_lp[2] &= ~WM1_LP_SR_EN; | |
2714 | I915_WRITE(WM3_LP_ILK, previous->wm_lp[2]); | |
8553c18e | 2715 | changed = true; |
facd619b VS |
2716 | } |
2717 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] & WM1_LP_SR_EN) { | |
2718 | previous->wm_lp[1] &= ~WM1_LP_SR_EN; | |
2719 | I915_WRITE(WM2_LP_ILK, previous->wm_lp[1]); | |
8553c18e | 2720 | changed = true; |
facd619b VS |
2721 | } |
2722 | if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] & WM1_LP_SR_EN) { | |
2723 | previous->wm_lp[0] &= ~WM1_LP_SR_EN; | |
2724 | I915_WRITE(WM1_LP_ILK, previous->wm_lp[0]); | |
8553c18e | 2725 | changed = true; |
facd619b | 2726 | } |
801bcfff | 2727 | |
facd619b VS |
2728 | /* |
2729 | * Don't touch WM1S_LP_EN here. | |
2730 | * Doing so could cause underruns. | |
2731 | */ | |
6cef2b8a | 2732 | |
8553c18e VS |
2733 | return changed; |
2734 | } | |
2735 | ||
2736 | /* | |
2737 | * The spec says we shouldn't write when we don't need, because every write | |
2738 | * causes WMs to be re-evaluated, expending some power. | |
2739 | */ | |
820c1980 ID |
2740 | static void ilk_write_wm_values(struct drm_i915_private *dev_priv, |
2741 | struct ilk_wm_values *results) | |
8553c18e VS |
2742 | { |
2743 | struct drm_device *dev = dev_priv->dev; | |
820c1980 | 2744 | struct ilk_wm_values *previous = &dev_priv->wm.hw; |
8553c18e VS |
2745 | unsigned int dirty; |
2746 | uint32_t val; | |
2747 | ||
055e393f | 2748 | dirty = ilk_compute_wm_dirty(dev_priv, previous, results); |
8553c18e VS |
2749 | if (!dirty) |
2750 | return; | |
2751 | ||
2752 | _ilk_disable_lp_wm(dev_priv, dirty); | |
2753 | ||
49a687c4 | 2754 | if (dirty & WM_DIRTY_PIPE(PIPE_A)) |
801bcfff | 2755 | I915_WRITE(WM0_PIPEA_ILK, results->wm_pipe[0]); |
49a687c4 | 2756 | if (dirty & WM_DIRTY_PIPE(PIPE_B)) |
801bcfff | 2757 | I915_WRITE(WM0_PIPEB_ILK, results->wm_pipe[1]); |
49a687c4 | 2758 | if (dirty & WM_DIRTY_PIPE(PIPE_C)) |
801bcfff PZ |
2759 | I915_WRITE(WM0_PIPEC_IVB, results->wm_pipe[2]); |
2760 | ||
49a687c4 | 2761 | if (dirty & WM_DIRTY_LINETIME(PIPE_A)) |
801bcfff | 2762 | I915_WRITE(PIPE_WM_LINETIME(PIPE_A), results->wm_linetime[0]); |
49a687c4 | 2763 | if (dirty & WM_DIRTY_LINETIME(PIPE_B)) |
801bcfff | 2764 | I915_WRITE(PIPE_WM_LINETIME(PIPE_B), results->wm_linetime[1]); |
49a687c4 | 2765 | if (dirty & WM_DIRTY_LINETIME(PIPE_C)) |
801bcfff PZ |
2766 | I915_WRITE(PIPE_WM_LINETIME(PIPE_C), results->wm_linetime[2]); |
2767 | ||
49a687c4 | 2768 | if (dirty & WM_DIRTY_DDB) { |
a42a5719 | 2769 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
ac9545fd VS |
2770 | val = I915_READ(WM_MISC); |
2771 | if (results->partitioning == INTEL_DDB_PART_1_2) | |
2772 | val &= ~WM_MISC_DATA_PARTITION_5_6; | |
2773 | else | |
2774 | val |= WM_MISC_DATA_PARTITION_5_6; | |
2775 | I915_WRITE(WM_MISC, val); | |
2776 | } else { | |
2777 | val = I915_READ(DISP_ARB_CTL2); | |
2778 | if (results->partitioning == INTEL_DDB_PART_1_2) | |
2779 | val &= ~DISP_DATA_PARTITION_5_6; | |
2780 | else | |
2781 | val |= DISP_DATA_PARTITION_5_6; | |
2782 | I915_WRITE(DISP_ARB_CTL2, val); | |
2783 | } | |
1011d8c4 PZ |
2784 | } |
2785 | ||
49a687c4 | 2786 | if (dirty & WM_DIRTY_FBC) { |
cca32e9a PZ |
2787 | val = I915_READ(DISP_ARB_CTL); |
2788 | if (results->enable_fbc_wm) | |
2789 | val &= ~DISP_FBC_WM_DIS; | |
2790 | else | |
2791 | val |= DISP_FBC_WM_DIS; | |
2792 | I915_WRITE(DISP_ARB_CTL, val); | |
2793 | } | |
2794 | ||
954911eb ID |
2795 | if (dirty & WM_DIRTY_LP(1) && |
2796 | previous->wm_lp_spr[0] != results->wm_lp_spr[0]) | |
2797 | I915_WRITE(WM1S_LP_ILK, results->wm_lp_spr[0]); | |
2798 | ||
2799 | if (INTEL_INFO(dev)->gen >= 7) { | |
6cef2b8a VS |
2800 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp_spr[1] != results->wm_lp_spr[1]) |
2801 | I915_WRITE(WM2S_LP_IVB, results->wm_lp_spr[1]); | |
2802 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp_spr[2] != results->wm_lp_spr[2]) | |
2803 | I915_WRITE(WM3S_LP_IVB, results->wm_lp_spr[2]); | |
2804 | } | |
801bcfff | 2805 | |
facd619b | 2806 | if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] != results->wm_lp[0]) |
801bcfff | 2807 | I915_WRITE(WM1_LP_ILK, results->wm_lp[0]); |
facd619b | 2808 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] != results->wm_lp[1]) |
801bcfff | 2809 | I915_WRITE(WM2_LP_ILK, results->wm_lp[1]); |
facd619b | 2810 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] != results->wm_lp[2]) |
801bcfff | 2811 | I915_WRITE(WM3_LP_ILK, results->wm_lp[2]); |
609cedef VS |
2812 | |
2813 | dev_priv->wm.hw = *results; | |
801bcfff PZ |
2814 | } |
2815 | ||
ed4a6a7c | 2816 | bool ilk_disable_lp_wm(struct drm_device *dev) |
8553c18e VS |
2817 | { |
2818 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2819 | ||
2820 | return _ilk_disable_lp_wm(dev_priv, WM_DIRTY_LP_ALL); | |
2821 | } | |
2822 | ||
b9cec075 DL |
2823 | /* |
2824 | * On gen9, we need to allocate Display Data Buffer (DDB) portions to the | |
2825 | * different active planes. | |
2826 | */ | |
2827 | ||
2828 | #define SKL_DDB_SIZE 896 /* in blocks */ | |
43d735a6 | 2829 | #define BXT_DDB_SIZE 512 |
b9cec075 | 2830 | |
024c9045 MR |
2831 | /* |
2832 | * Return the index of a plane in the SKL DDB and wm result arrays. Primary | |
2833 | * plane is always in slot 0, cursor is always in slot I915_MAX_PLANES-1, and | |
2834 | * other universal planes are in indices 1..n. Note that this may leave unused | |
2835 | * indices between the top "sprite" plane and the cursor. | |
2836 | */ | |
2837 | static int | |
2838 | skl_wm_plane_id(const struct intel_plane *plane) | |
2839 | { | |
2840 | switch (plane->base.type) { | |
2841 | case DRM_PLANE_TYPE_PRIMARY: | |
2842 | return 0; | |
2843 | case DRM_PLANE_TYPE_CURSOR: | |
2844 | return PLANE_CURSOR; | |
2845 | case DRM_PLANE_TYPE_OVERLAY: | |
2846 | return plane->plane + 1; | |
2847 | default: | |
2848 | MISSING_CASE(plane->base.type); | |
2849 | return plane->plane; | |
2850 | } | |
2851 | } | |
2852 | ||
b9cec075 DL |
2853 | static void |
2854 | skl_ddb_get_pipe_allocation_limits(struct drm_device *dev, | |
024c9045 | 2855 | const struct intel_crtc_state *cstate, |
c107acfe MR |
2856 | struct skl_ddb_entry *alloc, /* out */ |
2857 | int *num_active /* out */) | |
b9cec075 | 2858 | { |
c107acfe MR |
2859 | struct drm_atomic_state *state = cstate->base.state; |
2860 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
2861 | struct drm_i915_private *dev_priv = to_i915(dev); | |
024c9045 | 2862 | struct drm_crtc *for_crtc = cstate->base.crtc; |
b9cec075 DL |
2863 | unsigned int pipe_size, ddb_size; |
2864 | int nth_active_pipe; | |
c107acfe MR |
2865 | int pipe = to_intel_crtc(for_crtc)->pipe; |
2866 | ||
a6d3460e | 2867 | if (WARN_ON(!state) || !cstate->base.active) { |
b9cec075 DL |
2868 | alloc->start = 0; |
2869 | alloc->end = 0; | |
a6d3460e | 2870 | *num_active = hweight32(dev_priv->active_crtcs); |
b9cec075 DL |
2871 | return; |
2872 | } | |
2873 | ||
a6d3460e MR |
2874 | if (intel_state->active_pipe_changes) |
2875 | *num_active = hweight32(intel_state->active_crtcs); | |
2876 | else | |
2877 | *num_active = hweight32(dev_priv->active_crtcs); | |
2878 | ||
43d735a6 DL |
2879 | if (IS_BROXTON(dev)) |
2880 | ddb_size = BXT_DDB_SIZE; | |
2881 | else | |
2882 | ddb_size = SKL_DDB_SIZE; | |
b9cec075 DL |
2883 | |
2884 | ddb_size -= 4; /* 4 blocks for bypass path allocation */ | |
2885 | ||
c107acfe | 2886 | /* |
a6d3460e MR |
2887 | * If the state doesn't change the active CRTC's, then there's |
2888 | * no need to recalculate; the existing pipe allocation limits | |
2889 | * should remain unchanged. Note that we're safe from racing | |
2890 | * commits since any racing commit that changes the active CRTC | |
2891 | * list would need to grab _all_ crtc locks, including the one | |
2892 | * we currently hold. | |
c107acfe | 2893 | */ |
a6d3460e MR |
2894 | if (!intel_state->active_pipe_changes) { |
2895 | *alloc = dev_priv->wm.skl_hw.ddb.pipe[pipe]; | |
2896 | return; | |
c107acfe | 2897 | } |
a6d3460e MR |
2898 | |
2899 | nth_active_pipe = hweight32(intel_state->active_crtcs & | |
2900 | (drm_crtc_mask(for_crtc) - 1)); | |
2901 | pipe_size = ddb_size / hweight32(intel_state->active_crtcs); | |
2902 | alloc->start = nth_active_pipe * ddb_size / *num_active; | |
2903 | alloc->end = alloc->start + pipe_size; | |
b9cec075 DL |
2904 | } |
2905 | ||
c107acfe | 2906 | static unsigned int skl_cursor_allocation(int num_active) |
b9cec075 | 2907 | { |
c107acfe | 2908 | if (num_active == 1) |
b9cec075 DL |
2909 | return 32; |
2910 | ||
2911 | return 8; | |
2912 | } | |
2913 | ||
a269c583 DL |
2914 | static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg) |
2915 | { | |
2916 | entry->start = reg & 0x3ff; | |
2917 | entry->end = (reg >> 16) & 0x3ff; | |
16160e3d DL |
2918 | if (entry->end) |
2919 | entry->end += 1; | |
a269c583 DL |
2920 | } |
2921 | ||
08db6652 DL |
2922 | void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv, |
2923 | struct skl_ddb_allocation *ddb /* out */) | |
a269c583 | 2924 | { |
a269c583 DL |
2925 | enum pipe pipe; |
2926 | int plane; | |
2927 | u32 val; | |
2928 | ||
b10f1b20 ML |
2929 | memset(ddb, 0, sizeof(*ddb)); |
2930 | ||
a269c583 | 2931 | for_each_pipe(dev_priv, pipe) { |
4d800030 ID |
2932 | enum intel_display_power_domain power_domain; |
2933 | ||
2934 | power_domain = POWER_DOMAIN_PIPE(pipe); | |
2935 | if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) | |
b10f1b20 ML |
2936 | continue; |
2937 | ||
dd740780 | 2938 | for_each_plane(dev_priv, pipe, plane) { |
a269c583 DL |
2939 | val = I915_READ(PLANE_BUF_CFG(pipe, plane)); |
2940 | skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane], | |
2941 | val); | |
2942 | } | |
2943 | ||
2944 | val = I915_READ(CUR_BUF_CFG(pipe)); | |
4969d33e MR |
2945 | skl_ddb_entry_init_from_hw(&ddb->plane[pipe][PLANE_CURSOR], |
2946 | val); | |
4d800030 ID |
2947 | |
2948 | intel_display_power_put(dev_priv, power_domain); | |
a269c583 DL |
2949 | } |
2950 | } | |
2951 | ||
b9cec075 | 2952 | static unsigned int |
024c9045 MR |
2953 | skl_plane_relative_data_rate(const struct intel_crtc_state *cstate, |
2954 | const struct drm_plane_state *pstate, | |
2955 | int y) | |
b9cec075 | 2956 | { |
a280f7dd | 2957 | struct intel_plane_state *intel_pstate = to_intel_plane_state(pstate); |
024c9045 | 2958 | struct drm_framebuffer *fb = pstate->fb; |
a280f7dd | 2959 | uint32_t width = 0, height = 0; |
a1de91e5 MR |
2960 | unsigned format = fb ? fb->pixel_format : DRM_FORMAT_XRGB8888; |
2961 | ||
2962 | if (!intel_pstate->visible) | |
2963 | return 0; | |
2964 | if (pstate->plane->type == DRM_PLANE_TYPE_CURSOR) | |
2965 | return 0; | |
2966 | if (y && format != DRM_FORMAT_NV12) | |
2967 | return 0; | |
a280f7dd KM |
2968 | |
2969 | width = drm_rect_width(&intel_pstate->src) >> 16; | |
2970 | height = drm_rect_height(&intel_pstate->src) >> 16; | |
2971 | ||
2972 | if (intel_rotation_90_or_270(pstate->rotation)) | |
2973 | swap(width, height); | |
2cd601c6 CK |
2974 | |
2975 | /* for planar format */ | |
a1de91e5 | 2976 | if (format == DRM_FORMAT_NV12) { |
2cd601c6 | 2977 | if (y) /* y-plane data rate */ |
a280f7dd | 2978 | return width * height * |
a1de91e5 | 2979 | drm_format_plane_cpp(format, 0); |
2cd601c6 | 2980 | else /* uv-plane data rate */ |
a280f7dd | 2981 | return (width / 2) * (height / 2) * |
a1de91e5 | 2982 | drm_format_plane_cpp(format, 1); |
2cd601c6 CK |
2983 | } |
2984 | ||
2985 | /* for packed formats */ | |
a1de91e5 | 2986 | return width * height * drm_format_plane_cpp(format, 0); |
b9cec075 DL |
2987 | } |
2988 | ||
2989 | /* | |
2990 | * We don't overflow 32 bits. Worst case is 3 planes enabled, each fetching | |
2991 | * a 8192x4096@32bpp framebuffer: | |
2992 | * 3 * 4096 * 8192 * 4 < 2^32 | |
2993 | */ | |
2994 | static unsigned int | |
9c74d826 | 2995 | skl_get_total_relative_data_rate(struct intel_crtc_state *intel_cstate) |
b9cec075 | 2996 | { |
9c74d826 MR |
2997 | struct drm_crtc_state *cstate = &intel_cstate->base; |
2998 | struct drm_atomic_state *state = cstate->state; | |
2999 | struct drm_crtc *crtc = cstate->crtc; | |
3000 | struct drm_device *dev = crtc->dev; | |
3001 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
a6d3460e | 3002 | const struct drm_plane *plane; |
024c9045 | 3003 | const struct intel_plane *intel_plane; |
a6d3460e | 3004 | struct drm_plane_state *pstate; |
a1de91e5 | 3005 | unsigned int rate, total_data_rate = 0; |
9c74d826 | 3006 | int id; |
a6d3460e MR |
3007 | int i; |
3008 | ||
3009 | if (WARN_ON(!state)) | |
3010 | return 0; | |
b9cec075 | 3011 | |
a1de91e5 | 3012 | /* Calculate and cache data rate for each plane */ |
a6d3460e MR |
3013 | for_each_plane_in_state(state, plane, pstate, i) { |
3014 | id = skl_wm_plane_id(to_intel_plane(plane)); | |
3015 | intel_plane = to_intel_plane(plane); | |
3016 | ||
3017 | if (intel_plane->pipe != intel_crtc->pipe) | |
3018 | continue; | |
3019 | ||
3020 | /* packed/uv */ | |
3021 | rate = skl_plane_relative_data_rate(intel_cstate, | |
3022 | pstate, 0); | |
3023 | intel_cstate->wm.skl.plane_data_rate[id] = rate; | |
3024 | ||
3025 | /* y-plane */ | |
3026 | rate = skl_plane_relative_data_rate(intel_cstate, | |
3027 | pstate, 1); | |
3028 | intel_cstate->wm.skl.plane_y_data_rate[id] = rate; | |
a1de91e5 | 3029 | } |
024c9045 | 3030 | |
a1de91e5 MR |
3031 | /* Calculate CRTC's total data rate from cached values */ |
3032 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { | |
3033 | int id = skl_wm_plane_id(intel_plane); | |
024c9045 | 3034 | |
a1de91e5 | 3035 | /* packed/uv */ |
9c74d826 MR |
3036 | total_data_rate += intel_cstate->wm.skl.plane_data_rate[id]; |
3037 | total_data_rate += intel_cstate->wm.skl.plane_y_data_rate[id]; | |
b9cec075 DL |
3038 | } |
3039 | ||
9c74d826 MR |
3040 | WARN_ON(cstate->plane_mask && total_data_rate == 0); |
3041 | ||
b9cec075 DL |
3042 | return total_data_rate; |
3043 | } | |
3044 | ||
c107acfe | 3045 | static int |
024c9045 | 3046 | skl_allocate_pipe_ddb(struct intel_crtc_state *cstate, |
b9cec075 DL |
3047 | struct skl_ddb_allocation *ddb /* out */) |
3048 | { | |
c107acfe | 3049 | struct drm_atomic_state *state = cstate->base.state; |
024c9045 | 3050 | struct drm_crtc *crtc = cstate->base.crtc; |
b9cec075 DL |
3051 | struct drm_device *dev = crtc->dev; |
3052 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
024c9045 | 3053 | struct intel_plane *intel_plane; |
c107acfe MR |
3054 | struct drm_plane *plane; |
3055 | struct drm_plane_state *pstate; | |
b9cec075 | 3056 | enum pipe pipe = intel_crtc->pipe; |
34bb56af | 3057 | struct skl_ddb_entry *alloc = &ddb->pipe[pipe]; |
b9cec075 | 3058 | uint16_t alloc_size, start, cursor_blocks; |
86a2100a MR |
3059 | uint16_t *minimum = cstate->wm.skl.minimum_blocks; |
3060 | uint16_t *y_minimum = cstate->wm.skl.minimum_y_blocks; | |
b9cec075 | 3061 | unsigned int total_data_rate; |
c107acfe MR |
3062 | int num_active; |
3063 | int id, i; | |
b9cec075 | 3064 | |
a6d3460e MR |
3065 | if (WARN_ON(!state)) |
3066 | return 0; | |
3067 | ||
c107acfe MR |
3068 | if (!cstate->base.active) { |
3069 | ddb->pipe[pipe].start = ddb->pipe[pipe].end = 0; | |
3070 | memset(ddb->plane[pipe], 0, sizeof(ddb->plane[pipe])); | |
3071 | memset(ddb->y_plane[pipe], 0, sizeof(ddb->y_plane[pipe])); | |
3072 | return 0; | |
3073 | } | |
3074 | ||
a6d3460e | 3075 | skl_ddb_get_pipe_allocation_limits(dev, cstate, alloc, &num_active); |
34bb56af | 3076 | alloc_size = skl_ddb_entry_size(alloc); |
b9cec075 DL |
3077 | if (alloc_size == 0) { |
3078 | memset(ddb->plane[pipe], 0, sizeof(ddb->plane[pipe])); | |
c107acfe | 3079 | return 0; |
b9cec075 DL |
3080 | } |
3081 | ||
c107acfe | 3082 | cursor_blocks = skl_cursor_allocation(num_active); |
4969d33e MR |
3083 | ddb->plane[pipe][PLANE_CURSOR].start = alloc->end - cursor_blocks; |
3084 | ddb->plane[pipe][PLANE_CURSOR].end = alloc->end; | |
b9cec075 DL |
3085 | |
3086 | alloc_size -= cursor_blocks; | |
b9cec075 | 3087 | |
80958155 | 3088 | /* 1. Allocate the mininum required blocks for each active plane */ |
a6d3460e MR |
3089 | for_each_plane_in_state(state, plane, pstate, i) { |
3090 | intel_plane = to_intel_plane(plane); | |
3091 | id = skl_wm_plane_id(intel_plane); | |
c107acfe | 3092 | |
a6d3460e MR |
3093 | if (intel_plane->pipe != pipe) |
3094 | continue; | |
c107acfe | 3095 | |
a6d3460e MR |
3096 | if (!to_intel_plane_state(pstate)->visible) { |
3097 | minimum[id] = 0; | |
3098 | y_minimum[id] = 0; | |
3099 | continue; | |
3100 | } | |
3101 | if (plane->type == DRM_PLANE_TYPE_CURSOR) { | |
3102 | minimum[id] = 0; | |
3103 | y_minimum[id] = 0; | |
3104 | continue; | |
c107acfe | 3105 | } |
a6d3460e MR |
3106 | |
3107 | minimum[id] = 8; | |
3108 | if (pstate->fb->pixel_format == DRM_FORMAT_NV12) | |
3109 | y_minimum[id] = 8; | |
3110 | else | |
3111 | y_minimum[id] = 0; | |
c107acfe | 3112 | } |
80958155 | 3113 | |
c107acfe MR |
3114 | for (i = 0; i < PLANE_CURSOR; i++) { |
3115 | alloc_size -= minimum[i]; | |
3116 | alloc_size -= y_minimum[i]; | |
80958155 DL |
3117 | } |
3118 | ||
b9cec075 | 3119 | /* |
80958155 DL |
3120 | * 2. Distribute the remaining space in proportion to the amount of |
3121 | * data each plane needs to fetch from memory. | |
b9cec075 DL |
3122 | * |
3123 | * FIXME: we may not allocate every single block here. | |
3124 | */ | |
024c9045 | 3125 | total_data_rate = skl_get_total_relative_data_rate(cstate); |
a1de91e5 | 3126 | if (total_data_rate == 0) |
c107acfe | 3127 | return 0; |
b9cec075 | 3128 | |
34bb56af | 3129 | start = alloc->start; |
024c9045 | 3130 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { |
2cd601c6 CK |
3131 | unsigned int data_rate, y_data_rate; |
3132 | uint16_t plane_blocks, y_plane_blocks = 0; | |
024c9045 | 3133 | int id = skl_wm_plane_id(intel_plane); |
b9cec075 | 3134 | |
a1de91e5 | 3135 | data_rate = cstate->wm.skl.plane_data_rate[id]; |
b9cec075 DL |
3136 | |
3137 | /* | |
2cd601c6 | 3138 | * allocation for (packed formats) or (uv-plane part of planar format): |
b9cec075 DL |
3139 | * promote the expression to 64 bits to avoid overflowing, the |
3140 | * result is < available as data_rate / total_data_rate < 1 | |
3141 | */ | |
024c9045 | 3142 | plane_blocks = minimum[id]; |
80958155 DL |
3143 | plane_blocks += div_u64((uint64_t)alloc_size * data_rate, |
3144 | total_data_rate); | |
b9cec075 | 3145 | |
c107acfe MR |
3146 | /* Leave disabled planes at (0,0) */ |
3147 | if (data_rate) { | |
3148 | ddb->plane[pipe][id].start = start; | |
3149 | ddb->plane[pipe][id].end = start + plane_blocks; | |
3150 | } | |
b9cec075 DL |
3151 | |
3152 | start += plane_blocks; | |
2cd601c6 CK |
3153 | |
3154 | /* | |
3155 | * allocation for y_plane part of planar format: | |
3156 | */ | |
a1de91e5 MR |
3157 | y_data_rate = cstate->wm.skl.plane_y_data_rate[id]; |
3158 | ||
3159 | y_plane_blocks = y_minimum[id]; | |
3160 | y_plane_blocks += div_u64((uint64_t)alloc_size * y_data_rate, | |
3161 | total_data_rate); | |
2cd601c6 | 3162 | |
c107acfe MR |
3163 | if (y_data_rate) { |
3164 | ddb->y_plane[pipe][id].start = start; | |
3165 | ddb->y_plane[pipe][id].end = start + y_plane_blocks; | |
3166 | } | |
a1de91e5 MR |
3167 | |
3168 | start += y_plane_blocks; | |
b9cec075 DL |
3169 | } |
3170 | ||
c107acfe | 3171 | return 0; |
b9cec075 DL |
3172 | } |
3173 | ||
5cec258b | 3174 | static uint32_t skl_pipe_pixel_rate(const struct intel_crtc_state *config) |
2d41c0b5 PB |
3175 | { |
3176 | /* TODO: Take into account the scalers once we support them */ | |
2d112de7 | 3177 | return config->base.adjusted_mode.crtc_clock; |
2d41c0b5 PB |
3178 | } |
3179 | ||
3180 | /* | |
3181 | * The max latency should be 257 (max the punit can code is 255 and we add 2us | |
ac484963 | 3182 | * for the read latency) and cpp should always be <= 8, so that |
2d41c0b5 PB |
3183 | * should allow pixel_rate up to ~2 GHz which seems sufficient since max |
3184 | * 2xcdclk is 1350 MHz and the pixel rate should never exceed that. | |
3185 | */ | |
ac484963 | 3186 | static uint32_t skl_wm_method1(uint32_t pixel_rate, uint8_t cpp, uint32_t latency) |
2d41c0b5 PB |
3187 | { |
3188 | uint32_t wm_intermediate_val, ret; | |
3189 | ||
3190 | if (latency == 0) | |
3191 | return UINT_MAX; | |
3192 | ||
ac484963 | 3193 | wm_intermediate_val = latency * pixel_rate * cpp / 512; |
2d41c0b5 PB |
3194 | ret = DIV_ROUND_UP(wm_intermediate_val, 1000); |
3195 | ||
3196 | return ret; | |
3197 | } | |
3198 | ||
3199 | static uint32_t skl_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, | |
ac484963 | 3200 | uint32_t horiz_pixels, uint8_t cpp, |
0fda6568 | 3201 | uint64_t tiling, uint32_t latency) |
2d41c0b5 | 3202 | { |
d4c2aa60 TU |
3203 | uint32_t ret; |
3204 | uint32_t plane_bytes_per_line, plane_blocks_per_line; | |
3205 | uint32_t wm_intermediate_val; | |
2d41c0b5 PB |
3206 | |
3207 | if (latency == 0) | |
3208 | return UINT_MAX; | |
3209 | ||
ac484963 | 3210 | plane_bytes_per_line = horiz_pixels * cpp; |
0fda6568 TU |
3211 | |
3212 | if (tiling == I915_FORMAT_MOD_Y_TILED || | |
3213 | tiling == I915_FORMAT_MOD_Yf_TILED) { | |
3214 | plane_bytes_per_line *= 4; | |
3215 | plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); | |
3216 | plane_blocks_per_line /= 4; | |
3217 | } else { | |
3218 | plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); | |
3219 | } | |
3220 | ||
2d41c0b5 PB |
3221 | wm_intermediate_val = latency * pixel_rate; |
3222 | ret = DIV_ROUND_UP(wm_intermediate_val, pipe_htotal * 1000) * | |
d4c2aa60 | 3223 | plane_blocks_per_line; |
2d41c0b5 PB |
3224 | |
3225 | return ret; | |
3226 | } | |
3227 | ||
55994c2c MR |
3228 | static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv, |
3229 | struct intel_crtc_state *cstate, | |
3230 | struct intel_plane_state *intel_pstate, | |
3231 | uint16_t ddb_allocation, | |
3232 | int level, | |
3233 | uint16_t *out_blocks, /* out */ | |
3234 | uint8_t *out_lines, /* out */ | |
3235 | bool *enabled /* out */) | |
2d41c0b5 | 3236 | { |
33815fa5 MR |
3237 | struct drm_plane_state *pstate = &intel_pstate->base; |
3238 | struct drm_framebuffer *fb = pstate->fb; | |
d4c2aa60 TU |
3239 | uint32_t latency = dev_priv->wm.skl_latency[level]; |
3240 | uint32_t method1, method2; | |
3241 | uint32_t plane_bytes_per_line, plane_blocks_per_line; | |
3242 | uint32_t res_blocks, res_lines; | |
3243 | uint32_t selected_result; | |
ac484963 | 3244 | uint8_t cpp; |
a280f7dd | 3245 | uint32_t width = 0, height = 0; |
2d41c0b5 | 3246 | |
55994c2c MR |
3247 | if (latency == 0 || !cstate->base.active || !intel_pstate->visible) { |
3248 | *enabled = false; | |
3249 | return 0; | |
3250 | } | |
2d41c0b5 | 3251 | |
a280f7dd KM |
3252 | width = drm_rect_width(&intel_pstate->src) >> 16; |
3253 | height = drm_rect_height(&intel_pstate->src) >> 16; | |
3254 | ||
33815fa5 | 3255 | if (intel_rotation_90_or_270(pstate->rotation)) |
a280f7dd KM |
3256 | swap(width, height); |
3257 | ||
ac484963 | 3258 | cpp = drm_format_plane_cpp(fb->pixel_format, 0); |
024c9045 | 3259 | method1 = skl_wm_method1(skl_pipe_pixel_rate(cstate), |
ac484963 | 3260 | cpp, latency); |
024c9045 MR |
3261 | method2 = skl_wm_method2(skl_pipe_pixel_rate(cstate), |
3262 | cstate->base.adjusted_mode.crtc_htotal, | |
a280f7dd KM |
3263 | width, |
3264 | cpp, | |
3265 | fb->modifier[0], | |
d4c2aa60 | 3266 | latency); |
2d41c0b5 | 3267 | |
a280f7dd | 3268 | plane_bytes_per_line = width * cpp; |
d4c2aa60 | 3269 | plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); |
2d41c0b5 | 3270 | |
024c9045 MR |
3271 | if (fb->modifier[0] == I915_FORMAT_MOD_Y_TILED || |
3272 | fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED) { | |
1fc0a8f7 TU |
3273 | uint32_t min_scanlines = 4; |
3274 | uint32_t y_tile_minimum; | |
33815fa5 | 3275 | if (intel_rotation_90_or_270(pstate->rotation)) { |
ac484963 | 3276 | int cpp = (fb->pixel_format == DRM_FORMAT_NV12) ? |
024c9045 MR |
3277 | drm_format_plane_cpp(fb->pixel_format, 1) : |
3278 | drm_format_plane_cpp(fb->pixel_format, 0); | |
3279 | ||
ac484963 | 3280 | switch (cpp) { |
1fc0a8f7 TU |
3281 | case 1: |
3282 | min_scanlines = 16; | |
3283 | break; | |
3284 | case 2: | |
3285 | min_scanlines = 8; | |
3286 | break; | |
3287 | case 8: | |
3288 | WARN(1, "Unsupported pixel depth for rotation"); | |
2f0b5790 | 3289 | } |
1fc0a8f7 TU |
3290 | } |
3291 | y_tile_minimum = plane_blocks_per_line * min_scanlines; | |
0fda6568 TU |
3292 | selected_result = max(method2, y_tile_minimum); |
3293 | } else { | |
3294 | if ((ddb_allocation / plane_blocks_per_line) >= 1) | |
3295 | selected_result = min(method1, method2); | |
3296 | else | |
3297 | selected_result = method1; | |
3298 | } | |
2d41c0b5 | 3299 | |
d4c2aa60 TU |
3300 | res_blocks = selected_result + 1; |
3301 | res_lines = DIV_ROUND_UP(selected_result, plane_blocks_per_line); | |
e6d66171 | 3302 | |
0fda6568 | 3303 | if (level >= 1 && level <= 7) { |
024c9045 MR |
3304 | if (fb->modifier[0] == I915_FORMAT_MOD_Y_TILED || |
3305 | fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED) | |
0fda6568 TU |
3306 | res_lines += 4; |
3307 | else | |
3308 | res_blocks++; | |
3309 | } | |
e6d66171 | 3310 | |
55994c2c MR |
3311 | if (res_blocks >= ddb_allocation || res_lines > 31) { |
3312 | *enabled = false; | |
6b6bada7 MR |
3313 | |
3314 | /* | |
3315 | * If there are no valid level 0 watermarks, then we can't | |
3316 | * support this display configuration. | |
3317 | */ | |
3318 | if (level) { | |
3319 | return 0; | |
3320 | } else { | |
3321 | DRM_DEBUG_KMS("Requested display configuration exceeds system watermark limitations\n"); | |
3322 | DRM_DEBUG_KMS("Plane %d.%d: blocks required = %u/%u, lines required = %u/31\n", | |
3323 | to_intel_crtc(cstate->base.crtc)->pipe, | |
3324 | skl_wm_plane_id(to_intel_plane(pstate->plane)), | |
3325 | res_blocks, ddb_allocation, res_lines); | |
3326 | ||
3327 | return -EINVAL; | |
3328 | } | |
55994c2c | 3329 | } |
e6d66171 DL |
3330 | |
3331 | *out_blocks = res_blocks; | |
3332 | *out_lines = res_lines; | |
55994c2c | 3333 | *enabled = true; |
2d41c0b5 | 3334 | |
55994c2c | 3335 | return 0; |
2d41c0b5 PB |
3336 | } |
3337 | ||
f4a96752 MR |
3338 | static int |
3339 | skl_compute_wm_level(const struct drm_i915_private *dev_priv, | |
3340 | struct skl_ddb_allocation *ddb, | |
3341 | struct intel_crtc_state *cstate, | |
3342 | int level, | |
3343 | struct skl_wm_level *result) | |
2d41c0b5 | 3344 | { |
024c9045 | 3345 | struct drm_device *dev = dev_priv->dev; |
f4a96752 | 3346 | struct drm_atomic_state *state = cstate->base.state; |
024c9045 | 3347 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); |
f4a96752 | 3348 | struct drm_plane *plane; |
024c9045 | 3349 | struct intel_plane *intel_plane; |
33815fa5 | 3350 | struct intel_plane_state *intel_pstate; |
2d41c0b5 | 3351 | uint16_t ddb_blocks; |
024c9045 | 3352 | enum pipe pipe = intel_crtc->pipe; |
55994c2c | 3353 | int ret; |
024c9045 | 3354 | |
f4a96752 MR |
3355 | /* |
3356 | * We'll only calculate watermarks for planes that are actually | |
3357 | * enabled, so make sure all other planes are set as disabled. | |
3358 | */ | |
3359 | memset(result, 0, sizeof(*result)); | |
3360 | ||
3361 | for_each_intel_plane_mask(dev, intel_plane, cstate->base.plane_mask) { | |
024c9045 | 3362 | int i = skl_wm_plane_id(intel_plane); |
2d41c0b5 | 3363 | |
f4a96752 MR |
3364 | plane = &intel_plane->base; |
3365 | intel_pstate = NULL; | |
3366 | if (state) | |
3367 | intel_pstate = | |
3368 | intel_atomic_get_existing_plane_state(state, | |
3369 | intel_plane); | |
3370 | ||
3371 | /* | |
3372 | * Note: If we start supporting multiple pending atomic commits | |
3373 | * against the same planes/CRTC's in the future, plane->state | |
3374 | * will no longer be the correct pre-state to use for the | |
3375 | * calculations here and we'll need to change where we get the | |
3376 | * 'unchanged' plane data from. | |
3377 | * | |
3378 | * For now this is fine because we only allow one queued commit | |
3379 | * against a CRTC. Even if the plane isn't modified by this | |
3380 | * transaction and we don't have a plane lock, we still have | |
3381 | * the CRTC's lock, so we know that no other transactions are | |
3382 | * racing with us to update it. | |
3383 | */ | |
3384 | if (!intel_pstate) | |
3385 | intel_pstate = to_intel_plane_state(plane->state); | |
3386 | ||
3387 | WARN_ON(!intel_pstate->base.fb); | |
3388 | ||
2d41c0b5 PB |
3389 | ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][i]); |
3390 | ||
55994c2c MR |
3391 | ret = skl_compute_plane_wm(dev_priv, |
3392 | cstate, | |
3393 | intel_pstate, | |
3394 | ddb_blocks, | |
3395 | level, | |
3396 | &result->plane_res_b[i], | |
3397 | &result->plane_res_l[i], | |
3398 | &result->plane_en[i]); | |
3399 | if (ret) | |
3400 | return ret; | |
2d41c0b5 | 3401 | } |
f4a96752 MR |
3402 | |
3403 | return 0; | |
2d41c0b5 PB |
3404 | } |
3405 | ||
407b50f3 | 3406 | static uint32_t |
024c9045 | 3407 | skl_compute_linetime_wm(struct intel_crtc_state *cstate) |
407b50f3 | 3408 | { |
024c9045 | 3409 | if (!cstate->base.active) |
407b50f3 DL |
3410 | return 0; |
3411 | ||
024c9045 | 3412 | if (WARN_ON(skl_pipe_pixel_rate(cstate) == 0)) |
661abfc0 | 3413 | return 0; |
407b50f3 | 3414 | |
024c9045 MR |
3415 | return DIV_ROUND_UP(8 * cstate->base.adjusted_mode.crtc_htotal * 1000, |
3416 | skl_pipe_pixel_rate(cstate)); | |
407b50f3 DL |
3417 | } |
3418 | ||
024c9045 | 3419 | static void skl_compute_transition_wm(struct intel_crtc_state *cstate, |
9414f563 | 3420 | struct skl_wm_level *trans_wm /* out */) |
407b50f3 | 3421 | { |
024c9045 | 3422 | struct drm_crtc *crtc = cstate->base.crtc; |
9414f563 | 3423 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
024c9045 | 3424 | struct intel_plane *intel_plane; |
9414f563 | 3425 | |
024c9045 | 3426 | if (!cstate->base.active) |
407b50f3 | 3427 | return; |
9414f563 DL |
3428 | |
3429 | /* Until we know more, just disable transition WMs */ | |
024c9045 MR |
3430 | for_each_intel_plane_on_crtc(crtc->dev, intel_crtc, intel_plane) { |
3431 | int i = skl_wm_plane_id(intel_plane); | |
3432 | ||
9414f563 | 3433 | trans_wm->plane_en[i] = false; |
024c9045 | 3434 | } |
407b50f3 DL |
3435 | } |
3436 | ||
55994c2c MR |
3437 | static int skl_build_pipe_wm(struct intel_crtc_state *cstate, |
3438 | struct skl_ddb_allocation *ddb, | |
3439 | struct skl_pipe_wm *pipe_wm) | |
2d41c0b5 | 3440 | { |
024c9045 | 3441 | struct drm_device *dev = cstate->base.crtc->dev; |
2d41c0b5 | 3442 | const struct drm_i915_private *dev_priv = dev->dev_private; |
2d41c0b5 | 3443 | int level, max_level = ilk_wm_max_level(dev); |
55994c2c | 3444 | int ret; |
2d41c0b5 PB |
3445 | |
3446 | for (level = 0; level <= max_level; level++) { | |
55994c2c MR |
3447 | ret = skl_compute_wm_level(dev_priv, ddb, cstate, |
3448 | level, &pipe_wm->wm[level]); | |
3449 | if (ret) | |
3450 | return ret; | |
2d41c0b5 | 3451 | } |
024c9045 | 3452 | pipe_wm->linetime = skl_compute_linetime_wm(cstate); |
2d41c0b5 | 3453 | |
024c9045 | 3454 | skl_compute_transition_wm(cstate, &pipe_wm->trans_wm); |
55994c2c MR |
3455 | |
3456 | return 0; | |
2d41c0b5 PB |
3457 | } |
3458 | ||
3459 | static void skl_compute_wm_results(struct drm_device *dev, | |
2d41c0b5 PB |
3460 | struct skl_pipe_wm *p_wm, |
3461 | struct skl_wm_values *r, | |
3462 | struct intel_crtc *intel_crtc) | |
3463 | { | |
3464 | int level, max_level = ilk_wm_max_level(dev); | |
3465 | enum pipe pipe = intel_crtc->pipe; | |
9414f563 DL |
3466 | uint32_t temp; |
3467 | int i; | |
2d41c0b5 PB |
3468 | |
3469 | for (level = 0; level <= max_level; level++) { | |
2d41c0b5 PB |
3470 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { |
3471 | temp = 0; | |
2d41c0b5 PB |
3472 | |
3473 | temp |= p_wm->wm[level].plane_res_l[i] << | |
3474 | PLANE_WM_LINES_SHIFT; | |
3475 | temp |= p_wm->wm[level].plane_res_b[i]; | |
3476 | if (p_wm->wm[level].plane_en[i]) | |
3477 | temp |= PLANE_WM_EN; | |
3478 | ||
3479 | r->plane[pipe][i][level] = temp; | |
2d41c0b5 PB |
3480 | } |
3481 | ||
3482 | temp = 0; | |
2d41c0b5 | 3483 | |
4969d33e MR |
3484 | temp |= p_wm->wm[level].plane_res_l[PLANE_CURSOR] << PLANE_WM_LINES_SHIFT; |
3485 | temp |= p_wm->wm[level].plane_res_b[PLANE_CURSOR]; | |
2d41c0b5 | 3486 | |
4969d33e | 3487 | if (p_wm->wm[level].plane_en[PLANE_CURSOR]) |
2d41c0b5 PB |
3488 | temp |= PLANE_WM_EN; |
3489 | ||
4969d33e | 3490 | r->plane[pipe][PLANE_CURSOR][level] = temp; |
2d41c0b5 PB |
3491 | |
3492 | } | |
3493 | ||
9414f563 DL |
3494 | /* transition WMs */ |
3495 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
3496 | temp = 0; | |
3497 | temp |= p_wm->trans_wm.plane_res_l[i] << PLANE_WM_LINES_SHIFT; | |
3498 | temp |= p_wm->trans_wm.plane_res_b[i]; | |
3499 | if (p_wm->trans_wm.plane_en[i]) | |
3500 | temp |= PLANE_WM_EN; | |
3501 | ||
3502 | r->plane_trans[pipe][i] = temp; | |
3503 | } | |
3504 | ||
3505 | temp = 0; | |
4969d33e MR |
3506 | temp |= p_wm->trans_wm.plane_res_l[PLANE_CURSOR] << PLANE_WM_LINES_SHIFT; |
3507 | temp |= p_wm->trans_wm.plane_res_b[PLANE_CURSOR]; | |
3508 | if (p_wm->trans_wm.plane_en[PLANE_CURSOR]) | |
9414f563 DL |
3509 | temp |= PLANE_WM_EN; |
3510 | ||
4969d33e | 3511 | r->plane_trans[pipe][PLANE_CURSOR] = temp; |
9414f563 | 3512 | |
2d41c0b5 PB |
3513 | r->wm_linetime[pipe] = p_wm->linetime; |
3514 | } | |
3515 | ||
f0f59a00 VS |
3516 | static void skl_ddb_entry_write(struct drm_i915_private *dev_priv, |
3517 | i915_reg_t reg, | |
16160e3d DL |
3518 | const struct skl_ddb_entry *entry) |
3519 | { | |
3520 | if (entry->end) | |
3521 | I915_WRITE(reg, (entry->end - 1) << 16 | entry->start); | |
3522 | else | |
3523 | I915_WRITE(reg, 0); | |
3524 | } | |
3525 | ||
2d41c0b5 PB |
3526 | static void skl_write_wm_values(struct drm_i915_private *dev_priv, |
3527 | const struct skl_wm_values *new) | |
3528 | { | |
3529 | struct drm_device *dev = dev_priv->dev; | |
3530 | struct intel_crtc *crtc; | |
3531 | ||
19c8054c | 3532 | for_each_intel_crtc(dev, crtc) { |
2d41c0b5 PB |
3533 | int i, level, max_level = ilk_wm_max_level(dev); |
3534 | enum pipe pipe = crtc->pipe; | |
3535 | ||
2b4b9f35 | 3536 | if ((new->dirty_pipes & drm_crtc_mask(&crtc->base)) == 0) |
5d374d96 | 3537 | continue; |
734fa01f MR |
3538 | if (!crtc->active) |
3539 | continue; | |
8211bd5b | 3540 | |
5d374d96 | 3541 | I915_WRITE(PIPE_WM_LINETIME(pipe), new->wm_linetime[pipe]); |
8211bd5b | 3542 | |
5d374d96 DL |
3543 | for (level = 0; level <= max_level; level++) { |
3544 | for (i = 0; i < intel_num_planes(crtc); i++) | |
3545 | I915_WRITE(PLANE_WM(pipe, i, level), | |
3546 | new->plane[pipe][i][level]); | |
3547 | I915_WRITE(CUR_WM(pipe, level), | |
4969d33e | 3548 | new->plane[pipe][PLANE_CURSOR][level]); |
2d41c0b5 | 3549 | } |
5d374d96 DL |
3550 | for (i = 0; i < intel_num_planes(crtc); i++) |
3551 | I915_WRITE(PLANE_WM_TRANS(pipe, i), | |
3552 | new->plane_trans[pipe][i]); | |
4969d33e MR |
3553 | I915_WRITE(CUR_WM_TRANS(pipe), |
3554 | new->plane_trans[pipe][PLANE_CURSOR]); | |
5d374d96 | 3555 | |
2cd601c6 | 3556 | for (i = 0; i < intel_num_planes(crtc); i++) { |
5d374d96 DL |
3557 | skl_ddb_entry_write(dev_priv, |
3558 | PLANE_BUF_CFG(pipe, i), | |
3559 | &new->ddb.plane[pipe][i]); | |
2cd601c6 CK |
3560 | skl_ddb_entry_write(dev_priv, |
3561 | PLANE_NV12_BUF_CFG(pipe, i), | |
3562 | &new->ddb.y_plane[pipe][i]); | |
3563 | } | |
5d374d96 DL |
3564 | |
3565 | skl_ddb_entry_write(dev_priv, CUR_BUF_CFG(pipe), | |
4969d33e | 3566 | &new->ddb.plane[pipe][PLANE_CURSOR]); |
2d41c0b5 | 3567 | } |
2d41c0b5 PB |
3568 | } |
3569 | ||
0e8fb7ba DL |
3570 | /* |
3571 | * When setting up a new DDB allocation arrangement, we need to correctly | |
3572 | * sequence the times at which the new allocations for the pipes are taken into | |
3573 | * account or we'll have pipes fetching from space previously allocated to | |
3574 | * another pipe. | |
3575 | * | |
3576 | * Roughly the sequence looks like: | |
3577 | * 1. re-allocate the pipe(s) with the allocation being reduced and not | |
3578 | * overlapping with a previous light-up pipe (another way to put it is: | |
3579 | * pipes with their new allocation strickly included into their old ones). | |
3580 | * 2. re-allocate the other pipes that get their allocation reduced | |
3581 | * 3. allocate the pipes having their allocation increased | |
3582 | * | |
3583 | * Steps 1. and 2. are here to take care of the following case: | |
3584 | * - Initially DDB looks like this: | |
3585 | * | B | C | | |
3586 | * - enable pipe A. | |
3587 | * - pipe B has a reduced DDB allocation that overlaps with the old pipe C | |
3588 | * allocation | |
3589 | * | A | B | C | | |
3590 | * | |
3591 | * We need to sequence the re-allocation: C, B, A (and not B, C, A). | |
3592 | */ | |
3593 | ||
d21b795c DL |
3594 | static void |
3595 | skl_wm_flush_pipe(struct drm_i915_private *dev_priv, enum pipe pipe, int pass) | |
0e8fb7ba | 3596 | { |
0e8fb7ba DL |
3597 | int plane; |
3598 | ||
d21b795c DL |
3599 | DRM_DEBUG_KMS("flush pipe %c (pass %d)\n", pipe_name(pipe), pass); |
3600 | ||
dd740780 | 3601 | for_each_plane(dev_priv, pipe, plane) { |
0e8fb7ba DL |
3602 | I915_WRITE(PLANE_SURF(pipe, plane), |
3603 | I915_READ(PLANE_SURF(pipe, plane))); | |
3604 | } | |
3605 | I915_WRITE(CURBASE(pipe), I915_READ(CURBASE(pipe))); | |
3606 | } | |
3607 | ||
3608 | static bool | |
3609 | skl_ddb_allocation_included(const struct skl_ddb_allocation *old, | |
3610 | const struct skl_ddb_allocation *new, | |
3611 | enum pipe pipe) | |
3612 | { | |
3613 | uint16_t old_size, new_size; | |
3614 | ||
3615 | old_size = skl_ddb_entry_size(&old->pipe[pipe]); | |
3616 | new_size = skl_ddb_entry_size(&new->pipe[pipe]); | |
3617 | ||
3618 | return old_size != new_size && | |
3619 | new->pipe[pipe].start >= old->pipe[pipe].start && | |
3620 | new->pipe[pipe].end <= old->pipe[pipe].end; | |
3621 | } | |
3622 | ||
3623 | static void skl_flush_wm_values(struct drm_i915_private *dev_priv, | |
3624 | struct skl_wm_values *new_values) | |
3625 | { | |
3626 | struct drm_device *dev = dev_priv->dev; | |
3627 | struct skl_ddb_allocation *cur_ddb, *new_ddb; | |
c929cb45 | 3628 | bool reallocated[I915_MAX_PIPES] = {}; |
0e8fb7ba DL |
3629 | struct intel_crtc *crtc; |
3630 | enum pipe pipe; | |
3631 | ||
3632 | new_ddb = &new_values->ddb; | |
3633 | cur_ddb = &dev_priv->wm.skl_hw.ddb; | |
3634 | ||
3635 | /* | |
3636 | * First pass: flush the pipes with the new allocation contained into | |
3637 | * the old space. | |
3638 | * | |
3639 | * We'll wait for the vblank on those pipes to ensure we can safely | |
3640 | * re-allocate the freed space without this pipe fetching from it. | |
3641 | */ | |
3642 | for_each_intel_crtc(dev, crtc) { | |
3643 | if (!crtc->active) | |
3644 | continue; | |
3645 | ||
3646 | pipe = crtc->pipe; | |
3647 | ||
3648 | if (!skl_ddb_allocation_included(cur_ddb, new_ddb, pipe)) | |
3649 | continue; | |
3650 | ||
d21b795c | 3651 | skl_wm_flush_pipe(dev_priv, pipe, 1); |
0e8fb7ba DL |
3652 | intel_wait_for_vblank(dev, pipe); |
3653 | ||
3654 | reallocated[pipe] = true; | |
3655 | } | |
3656 | ||
3657 | ||
3658 | /* | |
3659 | * Second pass: flush the pipes that are having their allocation | |
3660 | * reduced, but overlapping with a previous allocation. | |
3661 | * | |
3662 | * Here as well we need to wait for the vblank to make sure the freed | |
3663 | * space is not used anymore. | |
3664 | */ | |
3665 | for_each_intel_crtc(dev, crtc) { | |
3666 | if (!crtc->active) | |
3667 | continue; | |
3668 | ||
3669 | pipe = crtc->pipe; | |
3670 | ||
3671 | if (reallocated[pipe]) | |
3672 | continue; | |
3673 | ||
3674 | if (skl_ddb_entry_size(&new_ddb->pipe[pipe]) < | |
3675 | skl_ddb_entry_size(&cur_ddb->pipe[pipe])) { | |
d21b795c | 3676 | skl_wm_flush_pipe(dev_priv, pipe, 2); |
0e8fb7ba | 3677 | intel_wait_for_vblank(dev, pipe); |
d9d8e6b3 | 3678 | reallocated[pipe] = true; |
0e8fb7ba | 3679 | } |
0e8fb7ba DL |
3680 | } |
3681 | ||
3682 | /* | |
3683 | * Third pass: flush the pipes that got more space allocated. | |
3684 | * | |
3685 | * We don't need to actively wait for the update here, next vblank | |
3686 | * will just get more DDB space with the correct WM values. | |
3687 | */ | |
3688 | for_each_intel_crtc(dev, crtc) { | |
3689 | if (!crtc->active) | |
3690 | continue; | |
3691 | ||
3692 | pipe = crtc->pipe; | |
3693 | ||
3694 | /* | |
3695 | * At this point, only the pipes more space than before are | |
3696 | * left to re-allocate. | |
3697 | */ | |
3698 | if (reallocated[pipe]) | |
3699 | continue; | |
3700 | ||
d21b795c | 3701 | skl_wm_flush_pipe(dev_priv, pipe, 3); |
0e8fb7ba DL |
3702 | } |
3703 | } | |
3704 | ||
55994c2c MR |
3705 | static int skl_update_pipe_wm(struct drm_crtc_state *cstate, |
3706 | struct skl_ddb_allocation *ddb, /* out */ | |
3707 | struct skl_pipe_wm *pipe_wm, /* out */ | |
3708 | bool *changed /* out */) | |
2d41c0b5 | 3709 | { |
f4a96752 MR |
3710 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->crtc); |
3711 | struct intel_crtc_state *intel_cstate = to_intel_crtc_state(cstate); | |
55994c2c | 3712 | int ret; |
2d41c0b5 | 3713 | |
55994c2c MR |
3714 | ret = skl_build_pipe_wm(intel_cstate, ddb, pipe_wm); |
3715 | if (ret) | |
3716 | return ret; | |
2d41c0b5 | 3717 | |
4e0963c7 | 3718 | if (!memcmp(&intel_crtc->wm.active.skl, pipe_wm, sizeof(*pipe_wm))) |
55994c2c MR |
3719 | *changed = false; |
3720 | else | |
3721 | *changed = true; | |
2d41c0b5 | 3722 | |
55994c2c | 3723 | return 0; |
2d41c0b5 PB |
3724 | } |
3725 | ||
98d39494 MR |
3726 | static int |
3727 | skl_compute_ddb(struct drm_atomic_state *state) | |
3728 | { | |
3729 | struct drm_device *dev = state->dev; | |
3730 | struct drm_i915_private *dev_priv = to_i915(dev); | |
3731 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
3732 | struct intel_crtc *intel_crtc; | |
734fa01f | 3733 | struct skl_ddb_allocation *ddb = &intel_state->wm_results.ddb; |
98d39494 MR |
3734 | unsigned realloc_pipes = dev_priv->active_crtcs; |
3735 | int ret; | |
3736 | ||
3737 | /* | |
3738 | * If this is our first atomic update following hardware readout, | |
3739 | * we can't trust the DDB that the BIOS programmed for us. Let's | |
3740 | * pretend that all pipes switched active status so that we'll | |
3741 | * ensure a full DDB recompute. | |
3742 | */ | |
3743 | if (dev_priv->wm.distrust_bios_wm) | |
3744 | intel_state->active_pipe_changes = ~0; | |
3745 | ||
3746 | /* | |
3747 | * If the modeset changes which CRTC's are active, we need to | |
3748 | * recompute the DDB allocation for *all* active pipes, even | |
3749 | * those that weren't otherwise being modified in any way by this | |
3750 | * atomic commit. Due to the shrinking of the per-pipe allocations | |
3751 | * when new active CRTC's are added, it's possible for a pipe that | |
3752 | * we were already using and aren't changing at all here to suddenly | |
3753 | * become invalid if its DDB needs exceeds its new allocation. | |
3754 | * | |
3755 | * Note that if we wind up doing a full DDB recompute, we can't let | |
3756 | * any other display updates race with this transaction, so we need | |
3757 | * to grab the lock on *all* CRTC's. | |
3758 | */ | |
734fa01f | 3759 | if (intel_state->active_pipe_changes) { |
98d39494 | 3760 | realloc_pipes = ~0; |
734fa01f MR |
3761 | intel_state->wm_results.dirty_pipes = ~0; |
3762 | } | |
98d39494 MR |
3763 | |
3764 | for_each_intel_crtc_mask(dev, intel_crtc, realloc_pipes) { | |
3765 | struct intel_crtc_state *cstate; | |
3766 | ||
3767 | cstate = intel_atomic_get_crtc_state(state, intel_crtc); | |
3768 | if (IS_ERR(cstate)) | |
3769 | return PTR_ERR(cstate); | |
3770 | ||
734fa01f | 3771 | ret = skl_allocate_pipe_ddb(cstate, ddb); |
98d39494 MR |
3772 | if (ret) |
3773 | return ret; | |
3774 | } | |
3775 | ||
3776 | return 0; | |
3777 | } | |
3778 | ||
3779 | static int | |
3780 | skl_compute_wm(struct drm_atomic_state *state) | |
3781 | { | |
3782 | struct drm_crtc *crtc; | |
3783 | struct drm_crtc_state *cstate; | |
734fa01f MR |
3784 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); |
3785 | struct skl_wm_values *results = &intel_state->wm_results; | |
3786 | struct skl_pipe_wm *pipe_wm; | |
98d39494 | 3787 | bool changed = false; |
734fa01f | 3788 | int ret, i; |
98d39494 MR |
3789 | |
3790 | /* | |
3791 | * If this transaction isn't actually touching any CRTC's, don't | |
3792 | * bother with watermark calculation. Note that if we pass this | |
3793 | * test, we're guaranteed to hold at least one CRTC state mutex, | |
3794 | * which means we can safely use values like dev_priv->active_crtcs | |
3795 | * since any racing commits that want to update them would need to | |
3796 | * hold _all_ CRTC state mutexes. | |
3797 | */ | |
3798 | for_each_crtc_in_state(state, crtc, cstate, i) | |
3799 | changed = true; | |
3800 | if (!changed) | |
3801 | return 0; | |
3802 | ||
734fa01f MR |
3803 | /* Clear all dirty flags */ |
3804 | results->dirty_pipes = 0; | |
3805 | ||
98d39494 MR |
3806 | ret = skl_compute_ddb(state); |
3807 | if (ret) | |
3808 | return ret; | |
3809 | ||
734fa01f MR |
3810 | /* |
3811 | * Calculate WM's for all pipes that are part of this transaction. | |
3812 | * Note that the DDB allocation above may have added more CRTC's that | |
3813 | * weren't otherwise being modified (and set bits in dirty_pipes) if | |
3814 | * pipe allocations had to change. | |
3815 | * | |
3816 | * FIXME: Now that we're doing this in the atomic check phase, we | |
3817 | * should allow skl_update_pipe_wm() to return failure in cases where | |
3818 | * no suitable watermark values can be found. | |
3819 | */ | |
3820 | for_each_crtc_in_state(state, crtc, cstate, i) { | |
3821 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3822 | struct intel_crtc_state *intel_cstate = | |
3823 | to_intel_crtc_state(cstate); | |
3824 | ||
3825 | pipe_wm = &intel_cstate->wm.skl.optimal; | |
3826 | ret = skl_update_pipe_wm(cstate, &results->ddb, pipe_wm, | |
3827 | &changed); | |
3828 | if (ret) | |
3829 | return ret; | |
3830 | ||
3831 | if (changed) | |
3832 | results->dirty_pipes |= drm_crtc_mask(crtc); | |
3833 | ||
3834 | if ((results->dirty_pipes & drm_crtc_mask(crtc)) == 0) | |
3835 | /* This pipe's WM's did not change */ | |
3836 | continue; | |
3837 | ||
3838 | intel_cstate->update_wm_pre = true; | |
3839 | skl_compute_wm_results(crtc->dev, pipe_wm, results, intel_crtc); | |
3840 | } | |
3841 | ||
98d39494 MR |
3842 | return 0; |
3843 | } | |
3844 | ||
2d41c0b5 PB |
3845 | static void skl_update_wm(struct drm_crtc *crtc) |
3846 | { | |
3847 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3848 | struct drm_device *dev = crtc->dev; | |
3849 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2d41c0b5 | 3850 | struct skl_wm_values *results = &dev_priv->wm.skl_results; |
4e0963c7 | 3851 | struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state); |
e8f1f02e | 3852 | struct skl_pipe_wm *pipe_wm = &cstate->wm.skl.optimal; |
adda50b8 | 3853 | |
734fa01f | 3854 | if ((results->dirty_pipes & drm_crtc_mask(crtc)) == 0) |
2d41c0b5 PB |
3855 | return; |
3856 | ||
734fa01f MR |
3857 | intel_crtc->wm.active.skl = *pipe_wm; |
3858 | ||
3859 | mutex_lock(&dev_priv->wm.wm_mutex); | |
2d41c0b5 | 3860 | |
2d41c0b5 | 3861 | skl_write_wm_values(dev_priv, results); |
0e8fb7ba | 3862 | skl_flush_wm_values(dev_priv, results); |
53b0deb4 DL |
3863 | |
3864 | /* store the new configuration */ | |
3865 | dev_priv->wm.skl_hw = *results; | |
734fa01f MR |
3866 | |
3867 | mutex_unlock(&dev_priv->wm.wm_mutex); | |
2d41c0b5 PB |
3868 | } |
3869 | ||
d890565c VS |
3870 | static void ilk_compute_wm_config(struct drm_device *dev, |
3871 | struct intel_wm_config *config) | |
3872 | { | |
3873 | struct intel_crtc *crtc; | |
3874 | ||
3875 | /* Compute the currently _active_ config */ | |
3876 | for_each_intel_crtc(dev, crtc) { | |
3877 | const struct intel_pipe_wm *wm = &crtc->wm.active.ilk; | |
3878 | ||
3879 | if (!wm->pipe_enabled) | |
3880 | continue; | |
3881 | ||
3882 | config->sprites_enabled |= wm->sprites_enabled; | |
3883 | config->sprites_scaled |= wm->sprites_scaled; | |
3884 | config->num_pipes_active++; | |
3885 | } | |
3886 | } | |
3887 | ||
ed4a6a7c | 3888 | static void ilk_program_watermarks(struct drm_i915_private *dev_priv) |
801bcfff | 3889 | { |
ed4a6a7c | 3890 | struct drm_device *dev = dev_priv->dev; |
b9d5c839 | 3891 | struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm; |
820c1980 | 3892 | struct ilk_wm_maximums max; |
d890565c | 3893 | struct intel_wm_config config = {}; |
820c1980 | 3894 | struct ilk_wm_values results = {}; |
77c122bc | 3895 | enum intel_ddb_partitioning partitioning; |
261a27d1 | 3896 | |
d890565c VS |
3897 | ilk_compute_wm_config(dev, &config); |
3898 | ||
3899 | ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_1_2, &max); | |
3900 | ilk_wm_merge(dev, &config, &max, &lp_wm_1_2); | |
a485bfb8 VS |
3901 | |
3902 | /* 5/6 split only in single pipe config on IVB+ */ | |
ec98c8d1 | 3903 | if (INTEL_INFO(dev)->gen >= 7 && |
d890565c VS |
3904 | config.num_pipes_active == 1 && config.sprites_enabled) { |
3905 | ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_5_6, &max); | |
3906 | ilk_wm_merge(dev, &config, &max, &lp_wm_5_6); | |
0362c781 | 3907 | |
820c1980 | 3908 | best_lp_wm = ilk_find_best_result(dev, &lp_wm_1_2, &lp_wm_5_6); |
861f3389 | 3909 | } else { |
198a1e9b | 3910 | best_lp_wm = &lp_wm_1_2; |
861f3389 PZ |
3911 | } |
3912 | ||
198a1e9b | 3913 | partitioning = (best_lp_wm == &lp_wm_1_2) ? |
77c122bc | 3914 | INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6; |
801bcfff | 3915 | |
820c1980 | 3916 | ilk_compute_wm_results(dev, best_lp_wm, partitioning, &results); |
609cedef | 3917 | |
820c1980 | 3918 | ilk_write_wm_values(dev_priv, &results); |
1011d8c4 PZ |
3919 | } |
3920 | ||
ed4a6a7c | 3921 | static void ilk_initial_watermarks(struct intel_crtc_state *cstate) |
b9d5c839 | 3922 | { |
ed4a6a7c MR |
3923 | struct drm_i915_private *dev_priv = to_i915(cstate->base.crtc->dev); |
3924 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); | |
b9d5c839 | 3925 | |
ed4a6a7c | 3926 | mutex_lock(&dev_priv->wm.wm_mutex); |
e8f1f02e | 3927 | intel_crtc->wm.active.ilk = cstate->wm.ilk.intermediate; |
ed4a6a7c MR |
3928 | ilk_program_watermarks(dev_priv); |
3929 | mutex_unlock(&dev_priv->wm.wm_mutex); | |
3930 | } | |
bf220452 | 3931 | |
ed4a6a7c MR |
3932 | static void ilk_optimize_watermarks(struct intel_crtc_state *cstate) |
3933 | { | |
3934 | struct drm_i915_private *dev_priv = to_i915(cstate->base.crtc->dev); | |
3935 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); | |
bf220452 | 3936 | |
ed4a6a7c MR |
3937 | mutex_lock(&dev_priv->wm.wm_mutex); |
3938 | if (cstate->wm.need_postvbl_update) { | |
e8f1f02e | 3939 | intel_crtc->wm.active.ilk = cstate->wm.ilk.optimal; |
ed4a6a7c MR |
3940 | ilk_program_watermarks(dev_priv); |
3941 | } | |
3942 | mutex_unlock(&dev_priv->wm.wm_mutex); | |
b9d5c839 VS |
3943 | } |
3944 | ||
3078999f PB |
3945 | static void skl_pipe_wm_active_state(uint32_t val, |
3946 | struct skl_pipe_wm *active, | |
3947 | bool is_transwm, | |
3948 | bool is_cursor, | |
3949 | int i, | |
3950 | int level) | |
3951 | { | |
3952 | bool is_enabled = (val & PLANE_WM_EN) != 0; | |
3953 | ||
3954 | if (!is_transwm) { | |
3955 | if (!is_cursor) { | |
3956 | active->wm[level].plane_en[i] = is_enabled; | |
3957 | active->wm[level].plane_res_b[i] = | |
3958 | val & PLANE_WM_BLOCKS_MASK; | |
3959 | active->wm[level].plane_res_l[i] = | |
3960 | (val >> PLANE_WM_LINES_SHIFT) & | |
3961 | PLANE_WM_LINES_MASK; | |
3962 | } else { | |
4969d33e MR |
3963 | active->wm[level].plane_en[PLANE_CURSOR] = is_enabled; |
3964 | active->wm[level].plane_res_b[PLANE_CURSOR] = | |
3078999f | 3965 | val & PLANE_WM_BLOCKS_MASK; |
4969d33e | 3966 | active->wm[level].plane_res_l[PLANE_CURSOR] = |
3078999f PB |
3967 | (val >> PLANE_WM_LINES_SHIFT) & |
3968 | PLANE_WM_LINES_MASK; | |
3969 | } | |
3970 | } else { | |
3971 | if (!is_cursor) { | |
3972 | active->trans_wm.plane_en[i] = is_enabled; | |
3973 | active->trans_wm.plane_res_b[i] = | |
3974 | val & PLANE_WM_BLOCKS_MASK; | |
3975 | active->trans_wm.plane_res_l[i] = | |
3976 | (val >> PLANE_WM_LINES_SHIFT) & | |
3977 | PLANE_WM_LINES_MASK; | |
3978 | } else { | |
4969d33e MR |
3979 | active->trans_wm.plane_en[PLANE_CURSOR] = is_enabled; |
3980 | active->trans_wm.plane_res_b[PLANE_CURSOR] = | |
3078999f | 3981 | val & PLANE_WM_BLOCKS_MASK; |
4969d33e | 3982 | active->trans_wm.plane_res_l[PLANE_CURSOR] = |
3078999f PB |
3983 | (val >> PLANE_WM_LINES_SHIFT) & |
3984 | PLANE_WM_LINES_MASK; | |
3985 | } | |
3986 | } | |
3987 | } | |
3988 | ||
3989 | static void skl_pipe_wm_get_hw_state(struct drm_crtc *crtc) | |
3990 | { | |
3991 | struct drm_device *dev = crtc->dev; | |
3992 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3993 | struct skl_wm_values *hw = &dev_priv->wm.skl_hw; | |
3994 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4e0963c7 | 3995 | struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state); |
e8f1f02e | 3996 | struct skl_pipe_wm *active = &cstate->wm.skl.optimal; |
3078999f PB |
3997 | enum pipe pipe = intel_crtc->pipe; |
3998 | int level, i, max_level; | |
3999 | uint32_t temp; | |
4000 | ||
4001 | max_level = ilk_wm_max_level(dev); | |
4002 | ||
4003 | hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe)); | |
4004 | ||
4005 | for (level = 0; level <= max_level; level++) { | |
4006 | for (i = 0; i < intel_num_planes(intel_crtc); i++) | |
4007 | hw->plane[pipe][i][level] = | |
4008 | I915_READ(PLANE_WM(pipe, i, level)); | |
4969d33e | 4009 | hw->plane[pipe][PLANE_CURSOR][level] = I915_READ(CUR_WM(pipe, level)); |
3078999f PB |
4010 | } |
4011 | ||
4012 | for (i = 0; i < intel_num_planes(intel_crtc); i++) | |
4013 | hw->plane_trans[pipe][i] = I915_READ(PLANE_WM_TRANS(pipe, i)); | |
4969d33e | 4014 | hw->plane_trans[pipe][PLANE_CURSOR] = I915_READ(CUR_WM_TRANS(pipe)); |
3078999f | 4015 | |
3ef00284 | 4016 | if (!intel_crtc->active) |
3078999f PB |
4017 | return; |
4018 | ||
2b4b9f35 | 4019 | hw->dirty_pipes |= drm_crtc_mask(crtc); |
3078999f PB |
4020 | |
4021 | active->linetime = hw->wm_linetime[pipe]; | |
4022 | ||
4023 | for (level = 0; level <= max_level; level++) { | |
4024 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
4025 | temp = hw->plane[pipe][i][level]; | |
4026 | skl_pipe_wm_active_state(temp, active, false, | |
4027 | false, i, level); | |
4028 | } | |
4969d33e | 4029 | temp = hw->plane[pipe][PLANE_CURSOR][level]; |
3078999f PB |
4030 | skl_pipe_wm_active_state(temp, active, false, true, i, level); |
4031 | } | |
4032 | ||
4033 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
4034 | temp = hw->plane_trans[pipe][i]; | |
4035 | skl_pipe_wm_active_state(temp, active, true, false, i, 0); | |
4036 | } | |
4037 | ||
4969d33e | 4038 | temp = hw->plane_trans[pipe][PLANE_CURSOR]; |
3078999f | 4039 | skl_pipe_wm_active_state(temp, active, true, true, i, 0); |
4e0963c7 MR |
4040 | |
4041 | intel_crtc->wm.active.skl = *active; | |
3078999f PB |
4042 | } |
4043 | ||
4044 | void skl_wm_get_hw_state(struct drm_device *dev) | |
4045 | { | |
a269c583 DL |
4046 | struct drm_i915_private *dev_priv = dev->dev_private; |
4047 | struct skl_ddb_allocation *ddb = &dev_priv->wm.skl_hw.ddb; | |
3078999f | 4048 | struct drm_crtc *crtc; |
a1de91e5 | 4049 | struct intel_crtc *intel_crtc; |
3078999f | 4050 | |
a269c583 | 4051 | skl_ddb_get_hw_state(dev_priv, ddb); |
3078999f PB |
4052 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
4053 | skl_pipe_wm_get_hw_state(crtc); | |
a1de91e5 | 4054 | |
279e99d7 MR |
4055 | if (dev_priv->active_crtcs) { |
4056 | /* Fully recompute DDB on first atomic commit */ | |
4057 | dev_priv->wm.distrust_bios_wm = true; | |
4058 | } else { | |
4059 | /* Easy/common case; just sanitize DDB now if everything off */ | |
4060 | memset(ddb, 0, sizeof(*ddb)); | |
4061 | } | |
4062 | ||
a1de91e5 MR |
4063 | /* Calculate plane data rates */ |
4064 | for_each_intel_crtc(dev, intel_crtc) { | |
4065 | struct intel_crtc_state *cstate = intel_crtc->config; | |
4066 | struct intel_plane *intel_plane; | |
4067 | ||
4068 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { | |
4069 | const struct drm_plane_state *pstate = | |
4070 | intel_plane->base.state; | |
4071 | int id = skl_wm_plane_id(intel_plane); | |
4072 | ||
4073 | cstate->wm.skl.plane_data_rate[id] = | |
4074 | skl_plane_relative_data_rate(cstate, pstate, 0); | |
4075 | cstate->wm.skl.plane_y_data_rate[id] = | |
4076 | skl_plane_relative_data_rate(cstate, pstate, 1); | |
4077 | } | |
4078 | } | |
3078999f PB |
4079 | } |
4080 | ||
243e6a44 VS |
4081 | static void ilk_pipe_wm_get_hw_state(struct drm_crtc *crtc) |
4082 | { | |
4083 | struct drm_device *dev = crtc->dev; | |
4084 | struct drm_i915_private *dev_priv = dev->dev_private; | |
820c1980 | 4085 | struct ilk_wm_values *hw = &dev_priv->wm.hw; |
243e6a44 | 4086 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
4e0963c7 | 4087 | struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state); |
e8f1f02e | 4088 | struct intel_pipe_wm *active = &cstate->wm.ilk.optimal; |
243e6a44 | 4089 | enum pipe pipe = intel_crtc->pipe; |
f0f59a00 | 4090 | static const i915_reg_t wm0_pipe_reg[] = { |
243e6a44 VS |
4091 | [PIPE_A] = WM0_PIPEA_ILK, |
4092 | [PIPE_B] = WM0_PIPEB_ILK, | |
4093 | [PIPE_C] = WM0_PIPEC_IVB, | |
4094 | }; | |
4095 | ||
4096 | hw->wm_pipe[pipe] = I915_READ(wm0_pipe_reg[pipe]); | |
a42a5719 | 4097 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
ce0e0713 | 4098 | hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe)); |
243e6a44 | 4099 | |
15606534 VS |
4100 | memset(active, 0, sizeof(*active)); |
4101 | ||
3ef00284 | 4102 | active->pipe_enabled = intel_crtc->active; |
2a44b76b VS |
4103 | |
4104 | if (active->pipe_enabled) { | |
243e6a44 VS |
4105 | u32 tmp = hw->wm_pipe[pipe]; |
4106 | ||
4107 | /* | |
4108 | * For active pipes LP0 watermark is marked as | |
4109 | * enabled, and LP1+ watermaks as disabled since | |
4110 | * we can't really reverse compute them in case | |
4111 | * multiple pipes are active. | |
4112 | */ | |
4113 | active->wm[0].enable = true; | |
4114 | active->wm[0].pri_val = (tmp & WM0_PIPE_PLANE_MASK) >> WM0_PIPE_PLANE_SHIFT; | |
4115 | active->wm[0].spr_val = (tmp & WM0_PIPE_SPRITE_MASK) >> WM0_PIPE_SPRITE_SHIFT; | |
4116 | active->wm[0].cur_val = tmp & WM0_PIPE_CURSOR_MASK; | |
4117 | active->linetime = hw->wm_linetime[pipe]; | |
4118 | } else { | |
4119 | int level, max_level = ilk_wm_max_level(dev); | |
4120 | ||
4121 | /* | |
4122 | * For inactive pipes, all watermark levels | |
4123 | * should be marked as enabled but zeroed, | |
4124 | * which is what we'd compute them to. | |
4125 | */ | |
4126 | for (level = 0; level <= max_level; level++) | |
4127 | active->wm[level].enable = true; | |
4128 | } | |
4e0963c7 MR |
4129 | |
4130 | intel_crtc->wm.active.ilk = *active; | |
243e6a44 VS |
4131 | } |
4132 | ||
6eb1a681 VS |
4133 | #define _FW_WM(value, plane) \ |
4134 | (((value) & DSPFW_ ## plane ## _MASK) >> DSPFW_ ## plane ## _SHIFT) | |
4135 | #define _FW_WM_VLV(value, plane) \ | |
4136 | (((value) & DSPFW_ ## plane ## _MASK_VLV) >> DSPFW_ ## plane ## _SHIFT) | |
4137 | ||
4138 | static void vlv_read_wm_values(struct drm_i915_private *dev_priv, | |
4139 | struct vlv_wm_values *wm) | |
4140 | { | |
4141 | enum pipe pipe; | |
4142 | uint32_t tmp; | |
4143 | ||
4144 | for_each_pipe(dev_priv, pipe) { | |
4145 | tmp = I915_READ(VLV_DDL(pipe)); | |
4146 | ||
4147 | wm->ddl[pipe].primary = | |
4148 | (tmp >> DDL_PLANE_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
4149 | wm->ddl[pipe].cursor = | |
4150 | (tmp >> DDL_CURSOR_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
4151 | wm->ddl[pipe].sprite[0] = | |
4152 | (tmp >> DDL_SPRITE_SHIFT(0)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
4153 | wm->ddl[pipe].sprite[1] = | |
4154 | (tmp >> DDL_SPRITE_SHIFT(1)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
4155 | } | |
4156 | ||
4157 | tmp = I915_READ(DSPFW1); | |
4158 | wm->sr.plane = _FW_WM(tmp, SR); | |
4159 | wm->pipe[PIPE_B].cursor = _FW_WM(tmp, CURSORB); | |
4160 | wm->pipe[PIPE_B].primary = _FW_WM_VLV(tmp, PLANEB); | |
4161 | wm->pipe[PIPE_A].primary = _FW_WM_VLV(tmp, PLANEA); | |
4162 | ||
4163 | tmp = I915_READ(DSPFW2); | |
4164 | wm->pipe[PIPE_A].sprite[1] = _FW_WM_VLV(tmp, SPRITEB); | |
4165 | wm->pipe[PIPE_A].cursor = _FW_WM(tmp, CURSORA); | |
4166 | wm->pipe[PIPE_A].sprite[0] = _FW_WM_VLV(tmp, SPRITEA); | |
4167 | ||
4168 | tmp = I915_READ(DSPFW3); | |
4169 | wm->sr.cursor = _FW_WM(tmp, CURSOR_SR); | |
4170 | ||
4171 | if (IS_CHERRYVIEW(dev_priv)) { | |
4172 | tmp = I915_READ(DSPFW7_CHV); | |
4173 | wm->pipe[PIPE_B].sprite[1] = _FW_WM_VLV(tmp, SPRITED); | |
4174 | wm->pipe[PIPE_B].sprite[0] = _FW_WM_VLV(tmp, SPRITEC); | |
4175 | ||
4176 | tmp = I915_READ(DSPFW8_CHV); | |
4177 | wm->pipe[PIPE_C].sprite[1] = _FW_WM_VLV(tmp, SPRITEF); | |
4178 | wm->pipe[PIPE_C].sprite[0] = _FW_WM_VLV(tmp, SPRITEE); | |
4179 | ||
4180 | tmp = I915_READ(DSPFW9_CHV); | |
4181 | wm->pipe[PIPE_C].primary = _FW_WM_VLV(tmp, PLANEC); | |
4182 | wm->pipe[PIPE_C].cursor = _FW_WM(tmp, CURSORC); | |
4183 | ||
4184 | tmp = I915_READ(DSPHOWM); | |
4185 | wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9; | |
4186 | wm->pipe[PIPE_C].sprite[1] |= _FW_WM(tmp, SPRITEF_HI) << 8; | |
4187 | wm->pipe[PIPE_C].sprite[0] |= _FW_WM(tmp, SPRITEE_HI) << 8; | |
4188 | wm->pipe[PIPE_C].primary |= _FW_WM(tmp, PLANEC_HI) << 8; | |
4189 | wm->pipe[PIPE_B].sprite[1] |= _FW_WM(tmp, SPRITED_HI) << 8; | |
4190 | wm->pipe[PIPE_B].sprite[0] |= _FW_WM(tmp, SPRITEC_HI) << 8; | |
4191 | wm->pipe[PIPE_B].primary |= _FW_WM(tmp, PLANEB_HI) << 8; | |
4192 | wm->pipe[PIPE_A].sprite[1] |= _FW_WM(tmp, SPRITEB_HI) << 8; | |
4193 | wm->pipe[PIPE_A].sprite[0] |= _FW_WM(tmp, SPRITEA_HI) << 8; | |
4194 | wm->pipe[PIPE_A].primary |= _FW_WM(tmp, PLANEA_HI) << 8; | |
4195 | } else { | |
4196 | tmp = I915_READ(DSPFW7); | |
4197 | wm->pipe[PIPE_B].sprite[1] = _FW_WM_VLV(tmp, SPRITED); | |
4198 | wm->pipe[PIPE_B].sprite[0] = _FW_WM_VLV(tmp, SPRITEC); | |
4199 | ||
4200 | tmp = I915_READ(DSPHOWM); | |
4201 | wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9; | |
4202 | wm->pipe[PIPE_B].sprite[1] |= _FW_WM(tmp, SPRITED_HI) << 8; | |
4203 | wm->pipe[PIPE_B].sprite[0] |= _FW_WM(tmp, SPRITEC_HI) << 8; | |
4204 | wm->pipe[PIPE_B].primary |= _FW_WM(tmp, PLANEB_HI) << 8; | |
4205 | wm->pipe[PIPE_A].sprite[1] |= _FW_WM(tmp, SPRITEB_HI) << 8; | |
4206 | wm->pipe[PIPE_A].sprite[0] |= _FW_WM(tmp, SPRITEA_HI) << 8; | |
4207 | wm->pipe[PIPE_A].primary |= _FW_WM(tmp, PLANEA_HI) << 8; | |
4208 | } | |
4209 | } | |
4210 | ||
4211 | #undef _FW_WM | |
4212 | #undef _FW_WM_VLV | |
4213 | ||
4214 | void vlv_wm_get_hw_state(struct drm_device *dev) | |
4215 | { | |
4216 | struct drm_i915_private *dev_priv = to_i915(dev); | |
4217 | struct vlv_wm_values *wm = &dev_priv->wm.vlv; | |
4218 | struct intel_plane *plane; | |
4219 | enum pipe pipe; | |
4220 | u32 val; | |
4221 | ||
4222 | vlv_read_wm_values(dev_priv, wm); | |
4223 | ||
4224 | for_each_intel_plane(dev, plane) { | |
4225 | switch (plane->base.type) { | |
4226 | int sprite; | |
4227 | case DRM_PLANE_TYPE_CURSOR: | |
4228 | plane->wm.fifo_size = 63; | |
4229 | break; | |
4230 | case DRM_PLANE_TYPE_PRIMARY: | |
4231 | plane->wm.fifo_size = vlv_get_fifo_size(dev, plane->pipe, 0); | |
4232 | break; | |
4233 | case DRM_PLANE_TYPE_OVERLAY: | |
4234 | sprite = plane->plane; | |
4235 | plane->wm.fifo_size = vlv_get_fifo_size(dev, plane->pipe, sprite + 1); | |
4236 | break; | |
4237 | } | |
4238 | } | |
4239 | ||
4240 | wm->cxsr = I915_READ(FW_BLC_SELF_VLV) & FW_CSPWRDWNEN; | |
4241 | wm->level = VLV_WM_LEVEL_PM2; | |
4242 | ||
4243 | if (IS_CHERRYVIEW(dev_priv)) { | |
4244 | mutex_lock(&dev_priv->rps.hw_lock); | |
4245 | ||
4246 | val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ); | |
4247 | if (val & DSP_MAXFIFO_PM5_ENABLE) | |
4248 | wm->level = VLV_WM_LEVEL_PM5; | |
4249 | ||
58590c14 VS |
4250 | /* |
4251 | * If DDR DVFS is disabled in the BIOS, Punit | |
4252 | * will never ack the request. So if that happens | |
4253 | * assume we don't have to enable/disable DDR DVFS | |
4254 | * dynamically. To test that just set the REQ_ACK | |
4255 | * bit to poke the Punit, but don't change the | |
4256 | * HIGH/LOW bits so that we don't actually change | |
4257 | * the current state. | |
4258 | */ | |
6eb1a681 | 4259 | val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); |
58590c14 VS |
4260 | val |= FORCE_DDR_FREQ_REQ_ACK; |
4261 | vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val); | |
4262 | ||
4263 | if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) & | |
4264 | FORCE_DDR_FREQ_REQ_ACK) == 0, 3)) { | |
4265 | DRM_DEBUG_KMS("Punit not acking DDR DVFS request, " | |
4266 | "assuming DDR DVFS is disabled\n"); | |
4267 | dev_priv->wm.max_level = VLV_WM_LEVEL_PM5; | |
4268 | } else { | |
4269 | val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); | |
4270 | if ((val & FORCE_DDR_HIGH_FREQ) == 0) | |
4271 | wm->level = VLV_WM_LEVEL_DDR_DVFS; | |
4272 | } | |
6eb1a681 VS |
4273 | |
4274 | mutex_unlock(&dev_priv->rps.hw_lock); | |
4275 | } | |
4276 | ||
4277 | for_each_pipe(dev_priv, pipe) | |
4278 | DRM_DEBUG_KMS("Initial watermarks: pipe %c, plane=%d, cursor=%d, sprite0=%d, sprite1=%d\n", | |
4279 | pipe_name(pipe), wm->pipe[pipe].primary, wm->pipe[pipe].cursor, | |
4280 | wm->pipe[pipe].sprite[0], wm->pipe[pipe].sprite[1]); | |
4281 | ||
4282 | DRM_DEBUG_KMS("Initial watermarks: SR plane=%d, SR cursor=%d level=%d cxsr=%d\n", | |
4283 | wm->sr.plane, wm->sr.cursor, wm->level, wm->cxsr); | |
4284 | } | |
4285 | ||
243e6a44 VS |
4286 | void ilk_wm_get_hw_state(struct drm_device *dev) |
4287 | { | |
4288 | struct drm_i915_private *dev_priv = dev->dev_private; | |
820c1980 | 4289 | struct ilk_wm_values *hw = &dev_priv->wm.hw; |
243e6a44 VS |
4290 | struct drm_crtc *crtc; |
4291 | ||
70e1e0ec | 4292 | for_each_crtc(dev, crtc) |
243e6a44 VS |
4293 | ilk_pipe_wm_get_hw_state(crtc); |
4294 | ||
4295 | hw->wm_lp[0] = I915_READ(WM1_LP_ILK); | |
4296 | hw->wm_lp[1] = I915_READ(WM2_LP_ILK); | |
4297 | hw->wm_lp[2] = I915_READ(WM3_LP_ILK); | |
4298 | ||
4299 | hw->wm_lp_spr[0] = I915_READ(WM1S_LP_ILK); | |
cfa7698b VS |
4300 | if (INTEL_INFO(dev)->gen >= 7) { |
4301 | hw->wm_lp_spr[1] = I915_READ(WM2S_LP_IVB); | |
4302 | hw->wm_lp_spr[2] = I915_READ(WM3S_LP_IVB); | |
4303 | } | |
243e6a44 | 4304 | |
a42a5719 | 4305 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
ac9545fd VS |
4306 | hw->partitioning = (I915_READ(WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ? |
4307 | INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; | |
4308 | else if (IS_IVYBRIDGE(dev)) | |
4309 | hw->partitioning = (I915_READ(DISP_ARB_CTL2) & DISP_DATA_PARTITION_5_6) ? | |
4310 | INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; | |
243e6a44 VS |
4311 | |
4312 | hw->enable_fbc_wm = | |
4313 | !(I915_READ(DISP_ARB_CTL) & DISP_FBC_WM_DIS); | |
4314 | } | |
4315 | ||
b445e3b0 ED |
4316 | /** |
4317 | * intel_update_watermarks - update FIFO watermark values based on current modes | |
4318 | * | |
4319 | * Calculate watermark values for the various WM regs based on current mode | |
4320 | * and plane configuration. | |
4321 | * | |
4322 | * There are several cases to deal with here: | |
4323 | * - normal (i.e. non-self-refresh) | |
4324 | * - self-refresh (SR) mode | |
4325 | * - lines are large relative to FIFO size (buffer can hold up to 2) | |
4326 | * - lines are small relative to FIFO size (buffer can hold more than 2 | |
4327 | * lines), so need to account for TLB latency | |
4328 | * | |
4329 | * The normal calculation is: | |
4330 | * watermark = dotclock * bytes per pixel * latency | |
4331 | * where latency is platform & configuration dependent (we assume pessimal | |
4332 | * values here). | |
4333 | * | |
4334 | * The SR calculation is: | |
4335 | * watermark = (trunc(latency/line time)+1) * surface width * | |
4336 | * bytes per pixel | |
4337 | * where | |
4338 | * line time = htotal / dotclock | |
4339 | * surface width = hdisplay for normal plane and 64 for cursor | |
4340 | * and latency is assumed to be high, as above. | |
4341 | * | |
4342 | * The final value programmed to the register should always be rounded up, | |
4343 | * and include an extra 2 entries to account for clock crossings. | |
4344 | * | |
4345 | * We don't use the sprite, so we can ignore that. And on Crestline we have | |
4346 | * to set the non-SR watermarks to 8. | |
4347 | */ | |
46ba614c | 4348 | void intel_update_watermarks(struct drm_crtc *crtc) |
b445e3b0 | 4349 | { |
46ba614c | 4350 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; |
b445e3b0 ED |
4351 | |
4352 | if (dev_priv->display.update_wm) | |
46ba614c | 4353 | dev_priv->display.update_wm(crtc); |
b445e3b0 ED |
4354 | } |
4355 | ||
e2828914 | 4356 | /* |
9270388e | 4357 | * Lock protecting IPS related data structures |
9270388e DV |
4358 | */ |
4359 | DEFINE_SPINLOCK(mchdev_lock); | |
4360 | ||
4361 | /* Global for IPS driver to get at the current i915 device. Protected by | |
4362 | * mchdev_lock. */ | |
4363 | static struct drm_i915_private *i915_mch_dev; | |
4364 | ||
91d14251 | 4365 | bool ironlake_set_drps(struct drm_i915_private *dev_priv, u8 val) |
2b4e57bd | 4366 | { |
2b4e57bd ED |
4367 | u16 rgvswctl; |
4368 | ||
9270388e DV |
4369 | assert_spin_locked(&mchdev_lock); |
4370 | ||
2b4e57bd ED |
4371 | rgvswctl = I915_READ16(MEMSWCTL); |
4372 | if (rgvswctl & MEMCTL_CMD_STS) { | |
4373 | DRM_DEBUG("gpu busy, RCS change rejected\n"); | |
4374 | return false; /* still busy with another command */ | |
4375 | } | |
4376 | ||
4377 | rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | | |
4378 | (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; | |
4379 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
4380 | POSTING_READ16(MEMSWCTL); | |
4381 | ||
4382 | rgvswctl |= MEMCTL_CMD_STS; | |
4383 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
4384 | ||
4385 | return true; | |
4386 | } | |
4387 | ||
91d14251 | 4388 | static void ironlake_enable_drps(struct drm_i915_private *dev_priv) |
2b4e57bd | 4389 | { |
84f1b20f | 4390 | u32 rgvmodectl; |
2b4e57bd ED |
4391 | u8 fmax, fmin, fstart, vstart; |
4392 | ||
9270388e DV |
4393 | spin_lock_irq(&mchdev_lock); |
4394 | ||
84f1b20f TU |
4395 | rgvmodectl = I915_READ(MEMMODECTL); |
4396 | ||
2b4e57bd ED |
4397 | /* Enable temp reporting */ |
4398 | I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN); | |
4399 | I915_WRITE16(TSC1, I915_READ(TSC1) | TSE); | |
4400 | ||
4401 | /* 100ms RC evaluation intervals */ | |
4402 | I915_WRITE(RCUPEI, 100000); | |
4403 | I915_WRITE(RCDNEI, 100000); | |
4404 | ||
4405 | /* Set max/min thresholds to 90ms and 80ms respectively */ | |
4406 | I915_WRITE(RCBMAXAVG, 90000); | |
4407 | I915_WRITE(RCBMINAVG, 80000); | |
4408 | ||
4409 | I915_WRITE(MEMIHYST, 1); | |
4410 | ||
4411 | /* Set up min, max, and cur for interrupt handling */ | |
4412 | fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT; | |
4413 | fmin = (rgvmodectl & MEMMODE_FMIN_MASK); | |
4414 | fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >> | |
4415 | MEMMODE_FSTART_SHIFT; | |
4416 | ||
616847e7 | 4417 | vstart = (I915_READ(PXVFREQ(fstart)) & PXVFREQ_PX_MASK) >> |
2b4e57bd ED |
4418 | PXVFREQ_PX_SHIFT; |
4419 | ||
20e4d407 DV |
4420 | dev_priv->ips.fmax = fmax; /* IPS callback will increase this */ |
4421 | dev_priv->ips.fstart = fstart; | |
2b4e57bd | 4422 | |
20e4d407 DV |
4423 | dev_priv->ips.max_delay = fstart; |
4424 | dev_priv->ips.min_delay = fmin; | |
4425 | dev_priv->ips.cur_delay = fstart; | |
2b4e57bd ED |
4426 | |
4427 | DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n", | |
4428 | fmax, fmin, fstart); | |
4429 | ||
4430 | I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN); | |
4431 | ||
4432 | /* | |
4433 | * Interrupts will be enabled in ironlake_irq_postinstall | |
4434 | */ | |
4435 | ||
4436 | I915_WRITE(VIDSTART, vstart); | |
4437 | POSTING_READ(VIDSTART); | |
4438 | ||
4439 | rgvmodectl |= MEMMODE_SWMODE_EN; | |
4440 | I915_WRITE(MEMMODECTL, rgvmodectl); | |
4441 | ||
9270388e | 4442 | if (wait_for_atomic((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10)) |
2b4e57bd | 4443 | DRM_ERROR("stuck trying to change perf mode\n"); |
dd92d8de | 4444 | mdelay(1); |
2b4e57bd | 4445 | |
91d14251 | 4446 | ironlake_set_drps(dev_priv, fstart); |
2b4e57bd | 4447 | |
7d81c3e0 VS |
4448 | dev_priv->ips.last_count1 = I915_READ(DMIEC) + |
4449 | I915_READ(DDREC) + I915_READ(CSIEC); | |
20e4d407 | 4450 | dev_priv->ips.last_time1 = jiffies_to_msecs(jiffies); |
7d81c3e0 | 4451 | dev_priv->ips.last_count2 = I915_READ(GFXEC); |
5ed0bdf2 | 4452 | dev_priv->ips.last_time2 = ktime_get_raw_ns(); |
9270388e DV |
4453 | |
4454 | spin_unlock_irq(&mchdev_lock); | |
2b4e57bd ED |
4455 | } |
4456 | ||
91d14251 | 4457 | static void ironlake_disable_drps(struct drm_i915_private *dev_priv) |
2b4e57bd | 4458 | { |
9270388e DV |
4459 | u16 rgvswctl; |
4460 | ||
4461 | spin_lock_irq(&mchdev_lock); | |
4462 | ||
4463 | rgvswctl = I915_READ16(MEMSWCTL); | |
2b4e57bd ED |
4464 | |
4465 | /* Ack interrupts, disable EFC interrupt */ | |
4466 | I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN); | |
4467 | I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG); | |
4468 | I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT); | |
4469 | I915_WRITE(DEIIR, DE_PCU_EVENT); | |
4470 | I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT); | |
4471 | ||
4472 | /* Go back to the starting frequency */ | |
91d14251 | 4473 | ironlake_set_drps(dev_priv, dev_priv->ips.fstart); |
dd92d8de | 4474 | mdelay(1); |
2b4e57bd ED |
4475 | rgvswctl |= MEMCTL_CMD_STS; |
4476 | I915_WRITE(MEMSWCTL, rgvswctl); | |
dd92d8de | 4477 | mdelay(1); |
2b4e57bd | 4478 | |
9270388e | 4479 | spin_unlock_irq(&mchdev_lock); |
2b4e57bd ED |
4480 | } |
4481 | ||
acbe9475 DV |
4482 | /* There's a funny hw issue where the hw returns all 0 when reading from |
4483 | * GEN6_RP_INTERRUPT_LIMITS. Hence we always need to compute the desired value | |
4484 | * ourselves, instead of doing a rmw cycle (which might result in us clearing | |
4485 | * all limits and the gpu stuck at whatever frequency it is at atm). | |
4486 | */ | |
74ef1173 | 4487 | static u32 intel_rps_limits(struct drm_i915_private *dev_priv, u8 val) |
2b4e57bd | 4488 | { |
7b9e0ae6 | 4489 | u32 limits; |
2b4e57bd | 4490 | |
20b46e59 DV |
4491 | /* Only set the down limit when we've reached the lowest level to avoid |
4492 | * getting more interrupts, otherwise leave this clear. This prevents a | |
4493 | * race in the hw when coming out of rc6: There's a tiny window where | |
4494 | * the hw runs at the minimal clock before selecting the desired | |
4495 | * frequency, if the down threshold expires in that window we will not | |
4496 | * receive a down interrupt. */ | |
2d1fe073 | 4497 | if (IS_GEN9(dev_priv)) { |
74ef1173 AG |
4498 | limits = (dev_priv->rps.max_freq_softlimit) << 23; |
4499 | if (val <= dev_priv->rps.min_freq_softlimit) | |
4500 | limits |= (dev_priv->rps.min_freq_softlimit) << 14; | |
4501 | } else { | |
4502 | limits = dev_priv->rps.max_freq_softlimit << 24; | |
4503 | if (val <= dev_priv->rps.min_freq_softlimit) | |
4504 | limits |= dev_priv->rps.min_freq_softlimit << 16; | |
4505 | } | |
20b46e59 DV |
4506 | |
4507 | return limits; | |
4508 | } | |
4509 | ||
dd75fdc8 CW |
4510 | static void gen6_set_rps_thresholds(struct drm_i915_private *dev_priv, u8 val) |
4511 | { | |
4512 | int new_power; | |
8a586437 AG |
4513 | u32 threshold_up = 0, threshold_down = 0; /* in % */ |
4514 | u32 ei_up = 0, ei_down = 0; | |
dd75fdc8 CW |
4515 | |
4516 | new_power = dev_priv->rps.power; | |
4517 | switch (dev_priv->rps.power) { | |
4518 | case LOW_POWER: | |
b39fb297 | 4519 | if (val > dev_priv->rps.efficient_freq + 1 && val > dev_priv->rps.cur_freq) |
dd75fdc8 CW |
4520 | new_power = BETWEEN; |
4521 | break; | |
4522 | ||
4523 | case BETWEEN: | |
b39fb297 | 4524 | if (val <= dev_priv->rps.efficient_freq && val < dev_priv->rps.cur_freq) |
dd75fdc8 | 4525 | new_power = LOW_POWER; |
b39fb297 | 4526 | else if (val >= dev_priv->rps.rp0_freq && val > dev_priv->rps.cur_freq) |
dd75fdc8 CW |
4527 | new_power = HIGH_POWER; |
4528 | break; | |
4529 | ||
4530 | case HIGH_POWER: | |
b39fb297 | 4531 | if (val < (dev_priv->rps.rp1_freq + dev_priv->rps.rp0_freq) >> 1 && val < dev_priv->rps.cur_freq) |
dd75fdc8 CW |
4532 | new_power = BETWEEN; |
4533 | break; | |
4534 | } | |
4535 | /* Max/min bins are special */ | |
aed242ff | 4536 | if (val <= dev_priv->rps.min_freq_softlimit) |
dd75fdc8 | 4537 | new_power = LOW_POWER; |
aed242ff | 4538 | if (val >= dev_priv->rps.max_freq_softlimit) |
dd75fdc8 CW |
4539 | new_power = HIGH_POWER; |
4540 | if (new_power == dev_priv->rps.power) | |
4541 | return; | |
4542 | ||
4543 | /* Note the units here are not exactly 1us, but 1280ns. */ | |
4544 | switch (new_power) { | |
4545 | case LOW_POWER: | |
4546 | /* Upclock if more than 95% busy over 16ms */ | |
8a586437 AG |
4547 | ei_up = 16000; |
4548 | threshold_up = 95; | |
dd75fdc8 CW |
4549 | |
4550 | /* Downclock if less than 85% busy over 32ms */ | |
8a586437 AG |
4551 | ei_down = 32000; |
4552 | threshold_down = 85; | |
dd75fdc8 CW |
4553 | break; |
4554 | ||
4555 | case BETWEEN: | |
4556 | /* Upclock if more than 90% busy over 13ms */ | |
8a586437 AG |
4557 | ei_up = 13000; |
4558 | threshold_up = 90; | |
dd75fdc8 CW |
4559 | |
4560 | /* Downclock if less than 75% busy over 32ms */ | |
8a586437 AG |
4561 | ei_down = 32000; |
4562 | threshold_down = 75; | |
dd75fdc8 CW |
4563 | break; |
4564 | ||
4565 | case HIGH_POWER: | |
4566 | /* Upclock if more than 85% busy over 10ms */ | |
8a586437 AG |
4567 | ei_up = 10000; |
4568 | threshold_up = 85; | |
dd75fdc8 CW |
4569 | |
4570 | /* Downclock if less than 60% busy over 32ms */ | |
8a586437 AG |
4571 | ei_down = 32000; |
4572 | threshold_down = 60; | |
dd75fdc8 CW |
4573 | break; |
4574 | } | |
4575 | ||
8a586437 AG |
4576 | I915_WRITE(GEN6_RP_UP_EI, |
4577 | GT_INTERVAL_FROM_US(dev_priv, ei_up)); | |
4578 | I915_WRITE(GEN6_RP_UP_THRESHOLD, | |
4579 | GT_INTERVAL_FROM_US(dev_priv, (ei_up * threshold_up / 100))); | |
4580 | ||
4581 | I915_WRITE(GEN6_RP_DOWN_EI, | |
4582 | GT_INTERVAL_FROM_US(dev_priv, ei_down)); | |
4583 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, | |
4584 | GT_INTERVAL_FROM_US(dev_priv, (ei_down * threshold_down / 100))); | |
4585 | ||
4586 | I915_WRITE(GEN6_RP_CONTROL, | |
4587 | GEN6_RP_MEDIA_TURBO | | |
4588 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
4589 | GEN6_RP_MEDIA_IS_GFX | | |
4590 | GEN6_RP_ENABLE | | |
4591 | GEN6_RP_UP_BUSY_AVG | | |
4592 | GEN6_RP_DOWN_IDLE_AVG); | |
4593 | ||
dd75fdc8 | 4594 | dev_priv->rps.power = new_power; |
8fb55197 CW |
4595 | dev_priv->rps.up_threshold = threshold_up; |
4596 | dev_priv->rps.down_threshold = threshold_down; | |
dd75fdc8 CW |
4597 | dev_priv->rps.last_adj = 0; |
4598 | } | |
4599 | ||
2876ce73 CW |
4600 | static u32 gen6_rps_pm_mask(struct drm_i915_private *dev_priv, u8 val) |
4601 | { | |
4602 | u32 mask = 0; | |
4603 | ||
4604 | if (val > dev_priv->rps.min_freq_softlimit) | |
6f4b12f8 | 4605 | mask |= GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_DOWN_THRESHOLD | GEN6_PM_RP_DOWN_TIMEOUT; |
2876ce73 | 4606 | if (val < dev_priv->rps.max_freq_softlimit) |
6f4b12f8 | 4607 | mask |= GEN6_PM_RP_UP_EI_EXPIRED | GEN6_PM_RP_UP_THRESHOLD; |
2876ce73 | 4608 | |
7b3c29f6 CW |
4609 | mask &= dev_priv->pm_rps_events; |
4610 | ||
59d02a1f | 4611 | return gen6_sanitize_rps_pm_mask(dev_priv, ~mask); |
2876ce73 CW |
4612 | } |
4613 | ||
b8a5ff8d JM |
4614 | /* gen6_set_rps is called to update the frequency request, but should also be |
4615 | * called when the range (min_delay and max_delay) is modified so that we can | |
4616 | * update the GEN6_RP_INTERRUPT_LIMITS register accordingly. */ | |
dc97997a | 4617 | static void gen6_set_rps(struct drm_i915_private *dev_priv, u8 val) |
20b46e59 | 4618 | { |
23eafea6 | 4619 | /* WaGsvDisableTurbo: Workaround to disable turbo on BXT A* */ |
dc97997a | 4620 | if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) |
23eafea6 SAK |
4621 | return; |
4622 | ||
4fc688ce | 4623 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
aed242ff CW |
4624 | WARN_ON(val > dev_priv->rps.max_freq); |
4625 | WARN_ON(val < dev_priv->rps.min_freq); | |
004777cb | 4626 | |
eb64cad1 CW |
4627 | /* min/max delay may still have been modified so be sure to |
4628 | * write the limits value. | |
4629 | */ | |
4630 | if (val != dev_priv->rps.cur_freq) { | |
4631 | gen6_set_rps_thresholds(dev_priv, val); | |
b8a5ff8d | 4632 | |
dc97997a | 4633 | if (IS_GEN9(dev_priv)) |
5704195c AG |
4634 | I915_WRITE(GEN6_RPNSWREQ, |
4635 | GEN9_FREQUENCY(val)); | |
dc97997a | 4636 | else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) |
eb64cad1 CW |
4637 | I915_WRITE(GEN6_RPNSWREQ, |
4638 | HSW_FREQUENCY(val)); | |
4639 | else | |
4640 | I915_WRITE(GEN6_RPNSWREQ, | |
4641 | GEN6_FREQUENCY(val) | | |
4642 | GEN6_OFFSET(0) | | |
4643 | GEN6_AGGRESSIVE_TURBO); | |
b8a5ff8d | 4644 | } |
7b9e0ae6 | 4645 | |
7b9e0ae6 CW |
4646 | /* Make sure we continue to get interrupts |
4647 | * until we hit the minimum or maximum frequencies. | |
4648 | */ | |
74ef1173 | 4649 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, intel_rps_limits(dev_priv, val)); |
2876ce73 | 4650 | I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val)); |
7b9e0ae6 | 4651 | |
d5570a72 BW |
4652 | POSTING_READ(GEN6_RPNSWREQ); |
4653 | ||
b39fb297 | 4654 | dev_priv->rps.cur_freq = val; |
0f94592e | 4655 | trace_intel_gpu_freq_change(intel_gpu_freq(dev_priv, val)); |
2b4e57bd ED |
4656 | } |
4657 | ||
dc97997a | 4658 | static void valleyview_set_rps(struct drm_i915_private *dev_priv, u8 val) |
ffe02b40 | 4659 | { |
ffe02b40 | 4660 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
aed242ff CW |
4661 | WARN_ON(val > dev_priv->rps.max_freq); |
4662 | WARN_ON(val < dev_priv->rps.min_freq); | |
ffe02b40 | 4663 | |
dc97997a | 4664 | if (WARN_ONCE(IS_CHERRYVIEW(dev_priv) && (val & 1), |
ffe02b40 VS |
4665 | "Odd GPU freq value\n")) |
4666 | val &= ~1; | |
4667 | ||
cd25dd5b D |
4668 | I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val)); |
4669 | ||
8fb55197 | 4670 | if (val != dev_priv->rps.cur_freq) { |
ffe02b40 | 4671 | vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val); |
8fb55197 CW |
4672 | if (!IS_CHERRYVIEW(dev_priv)) |
4673 | gen6_set_rps_thresholds(dev_priv, val); | |
4674 | } | |
ffe02b40 | 4675 | |
ffe02b40 VS |
4676 | dev_priv->rps.cur_freq = val; |
4677 | trace_intel_gpu_freq_change(intel_gpu_freq(dev_priv, val)); | |
4678 | } | |
4679 | ||
a7f6e231 | 4680 | /* vlv_set_rps_idle: Set the frequency to idle, if Gfx clocks are down |
76c3552f D |
4681 | * |
4682 | * * If Gfx is Idle, then | |
a7f6e231 D |
4683 | * 1. Forcewake Media well. |
4684 | * 2. Request idle freq. | |
4685 | * 3. Release Forcewake of Media well. | |
76c3552f D |
4686 | */ |
4687 | static void vlv_set_rps_idle(struct drm_i915_private *dev_priv) | |
4688 | { | |
aed242ff | 4689 | u32 val = dev_priv->rps.idle_freq; |
5549d25f | 4690 | |
aed242ff | 4691 | if (dev_priv->rps.cur_freq <= val) |
76c3552f D |
4692 | return; |
4693 | ||
a7f6e231 D |
4694 | /* Wake up the media well, as that takes a lot less |
4695 | * power than the Render well. */ | |
4696 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_MEDIA); | |
dc97997a | 4697 | valleyview_set_rps(dev_priv, val); |
a7f6e231 | 4698 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_MEDIA); |
76c3552f D |
4699 | } |
4700 | ||
43cf3bf0 CW |
4701 | void gen6_rps_busy(struct drm_i915_private *dev_priv) |
4702 | { | |
4703 | mutex_lock(&dev_priv->rps.hw_lock); | |
4704 | if (dev_priv->rps.enabled) { | |
4705 | if (dev_priv->pm_rps_events & (GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED)) | |
4706 | gen6_rps_reset_ei(dev_priv); | |
4707 | I915_WRITE(GEN6_PMINTRMSK, | |
4708 | gen6_rps_pm_mask(dev_priv, dev_priv->rps.cur_freq)); | |
4709 | } | |
4710 | mutex_unlock(&dev_priv->rps.hw_lock); | |
4711 | } | |
4712 | ||
b29c19b6 CW |
4713 | void gen6_rps_idle(struct drm_i915_private *dev_priv) |
4714 | { | |
4715 | mutex_lock(&dev_priv->rps.hw_lock); | |
c0951f0c | 4716 | if (dev_priv->rps.enabled) { |
dc97997a | 4717 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
76c3552f | 4718 | vlv_set_rps_idle(dev_priv); |
7526ed79 | 4719 | else |
dc97997a | 4720 | gen6_set_rps(dev_priv, dev_priv->rps.idle_freq); |
c0951f0c | 4721 | dev_priv->rps.last_adj = 0; |
43cf3bf0 | 4722 | I915_WRITE(GEN6_PMINTRMSK, 0xffffffff); |
c0951f0c | 4723 | } |
8d3afd7d | 4724 | mutex_unlock(&dev_priv->rps.hw_lock); |
1854d5ca | 4725 | |
8d3afd7d | 4726 | spin_lock(&dev_priv->rps.client_lock); |
1854d5ca CW |
4727 | while (!list_empty(&dev_priv->rps.clients)) |
4728 | list_del_init(dev_priv->rps.clients.next); | |
8d3afd7d | 4729 | spin_unlock(&dev_priv->rps.client_lock); |
b29c19b6 CW |
4730 | } |
4731 | ||
1854d5ca | 4732 | void gen6_rps_boost(struct drm_i915_private *dev_priv, |
e61b9958 CW |
4733 | struct intel_rps_client *rps, |
4734 | unsigned long submitted) | |
b29c19b6 | 4735 | { |
8d3afd7d CW |
4736 | /* This is intentionally racy! We peek at the state here, then |
4737 | * validate inside the RPS worker. | |
4738 | */ | |
4739 | if (!(dev_priv->mm.busy && | |
4740 | dev_priv->rps.enabled && | |
4741 | dev_priv->rps.cur_freq < dev_priv->rps.max_freq_softlimit)) | |
4742 | return; | |
43cf3bf0 | 4743 | |
e61b9958 CW |
4744 | /* Force a RPS boost (and don't count it against the client) if |
4745 | * the GPU is severely congested. | |
4746 | */ | |
d0bc54f2 | 4747 | if (rps && time_after(jiffies, submitted + DRM_I915_THROTTLE_JIFFIES)) |
e61b9958 CW |
4748 | rps = NULL; |
4749 | ||
8d3afd7d CW |
4750 | spin_lock(&dev_priv->rps.client_lock); |
4751 | if (rps == NULL || list_empty(&rps->link)) { | |
4752 | spin_lock_irq(&dev_priv->irq_lock); | |
4753 | if (dev_priv->rps.interrupts_enabled) { | |
4754 | dev_priv->rps.client_boost = true; | |
4755 | queue_work(dev_priv->wq, &dev_priv->rps.work); | |
4756 | } | |
4757 | spin_unlock_irq(&dev_priv->irq_lock); | |
1854d5ca | 4758 | |
2e1b8730 CW |
4759 | if (rps != NULL) { |
4760 | list_add(&rps->link, &dev_priv->rps.clients); | |
4761 | rps->boosts++; | |
1854d5ca CW |
4762 | } else |
4763 | dev_priv->rps.boosts++; | |
c0951f0c | 4764 | } |
8d3afd7d | 4765 | spin_unlock(&dev_priv->rps.client_lock); |
b29c19b6 CW |
4766 | } |
4767 | ||
dc97997a | 4768 | void intel_set_rps(struct drm_i915_private *dev_priv, u8 val) |
0a073b84 | 4769 | { |
dc97997a CW |
4770 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
4771 | valleyview_set_rps(dev_priv, val); | |
ffe02b40 | 4772 | else |
dc97997a | 4773 | gen6_set_rps(dev_priv, val); |
0a073b84 JB |
4774 | } |
4775 | ||
dc97997a | 4776 | static void gen9_disable_rc6(struct drm_i915_private *dev_priv) |
20e49366 | 4777 | { |
20e49366 | 4778 | I915_WRITE(GEN6_RC_CONTROL, 0); |
38c23527 | 4779 | I915_WRITE(GEN9_PG_ENABLE, 0); |
20e49366 ZW |
4780 | } |
4781 | ||
dc97997a | 4782 | static void gen9_disable_rps(struct drm_i915_private *dev_priv) |
2030d684 | 4783 | { |
2030d684 AG |
4784 | I915_WRITE(GEN6_RP_CONTROL, 0); |
4785 | } | |
4786 | ||
dc97997a | 4787 | static void gen6_disable_rps(struct drm_i915_private *dev_priv) |
d20d4f0c | 4788 | { |
d20d4f0c | 4789 | I915_WRITE(GEN6_RC_CONTROL, 0); |
44fc7d5c | 4790 | I915_WRITE(GEN6_RPNSWREQ, 1 << 31); |
2030d684 | 4791 | I915_WRITE(GEN6_RP_CONTROL, 0); |
44fc7d5c DV |
4792 | } |
4793 | ||
dc97997a | 4794 | static void cherryview_disable_rps(struct drm_i915_private *dev_priv) |
38807746 | 4795 | { |
38807746 D |
4796 | I915_WRITE(GEN6_RC_CONTROL, 0); |
4797 | } | |
4798 | ||
dc97997a | 4799 | static void valleyview_disable_rps(struct drm_i915_private *dev_priv) |
44fc7d5c | 4800 | { |
98a2e5f9 D |
4801 | /* we're doing forcewake before Disabling RC6, |
4802 | * This what the BIOS expects when going into suspend */ | |
59bad947 | 4803 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
98a2e5f9 | 4804 | |
44fc7d5c | 4805 | I915_WRITE(GEN6_RC_CONTROL, 0); |
d20d4f0c | 4806 | |
59bad947 | 4807 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
d20d4f0c JB |
4808 | } |
4809 | ||
dc97997a | 4810 | static void intel_print_rc6_info(struct drm_i915_private *dev_priv, u32 mode) |
dc39fff7 | 4811 | { |
dc97997a | 4812 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
91ca689a ID |
4813 | if (mode & (GEN7_RC_CTL_TO_MODE | GEN6_RC_CTL_EI_MODE(1))) |
4814 | mode = GEN6_RC_CTL_RC6_ENABLE; | |
4815 | else | |
4816 | mode = 0; | |
4817 | } | |
dc97997a | 4818 | if (HAS_RC6p(dev_priv)) |
58abf1da | 4819 | DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s RC6p %s RC6pp %s\n", |
87ad3212 JN |
4820 | onoff(mode & GEN6_RC_CTL_RC6_ENABLE), |
4821 | onoff(mode & GEN6_RC_CTL_RC6p_ENABLE), | |
4822 | onoff(mode & GEN6_RC_CTL_RC6pp_ENABLE)); | |
58abf1da RV |
4823 | |
4824 | else | |
4825 | DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s\n", | |
87ad3212 | 4826 | onoff(mode & GEN6_RC_CTL_RC6_ENABLE)); |
dc39fff7 BW |
4827 | } |
4828 | ||
dc97997a | 4829 | static bool bxt_check_bios_rc6_setup(struct drm_i915_private *dev_priv) |
274008e8 | 4830 | { |
72e96d64 | 4831 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
274008e8 SAK |
4832 | bool enable_rc6 = true; |
4833 | unsigned long rc6_ctx_base; | |
4834 | ||
4835 | if (!(I915_READ(RC6_LOCATION) & RC6_CTX_IN_DRAM)) { | |
4836 | DRM_DEBUG_KMS("RC6 Base location not set properly.\n"); | |
4837 | enable_rc6 = false; | |
4838 | } | |
4839 | ||
4840 | /* | |
4841 | * The exact context size is not known for BXT, so assume a page size | |
4842 | * for this check. | |
4843 | */ | |
4844 | rc6_ctx_base = I915_READ(RC6_CTX_BASE) & RC6_CTX_BASE_MASK; | |
72e96d64 JL |
4845 | if (!((rc6_ctx_base >= ggtt->stolen_reserved_base) && |
4846 | (rc6_ctx_base + PAGE_SIZE <= ggtt->stolen_reserved_base + | |
4847 | ggtt->stolen_reserved_size))) { | |
274008e8 SAK |
4848 | DRM_DEBUG_KMS("RC6 Base address not as expected.\n"); |
4849 | enable_rc6 = false; | |
4850 | } | |
4851 | ||
4852 | if (!(((I915_READ(PWRCTX_MAXCNT_RCSUNIT) & IDLE_TIME_MASK) > 1) && | |
4853 | ((I915_READ(PWRCTX_MAXCNT_VCSUNIT0) & IDLE_TIME_MASK) > 1) && | |
4854 | ((I915_READ(PWRCTX_MAXCNT_BCSUNIT) & IDLE_TIME_MASK) > 1) && | |
4855 | ((I915_READ(PWRCTX_MAXCNT_VECSUNIT) & IDLE_TIME_MASK) > 1))) { | |
4856 | DRM_DEBUG_KMS("Engine Idle wait time not set properly.\n"); | |
4857 | enable_rc6 = false; | |
4858 | } | |
4859 | ||
4860 | if (!(I915_READ(GEN6_RC_CONTROL) & (GEN6_RC_CTL_RC6_ENABLE | | |
4861 | GEN6_RC_CTL_HW_ENABLE)) && | |
4862 | ((I915_READ(GEN6_RC_CONTROL) & GEN6_RC_CTL_HW_ENABLE) || | |
4863 | !(I915_READ(GEN6_RC_STATE) & RC6_STATE))) { | |
4864 | DRM_DEBUG_KMS("HW/SW RC6 is not enabled by BIOS.\n"); | |
4865 | enable_rc6 = false; | |
4866 | } | |
4867 | ||
4868 | return enable_rc6; | |
4869 | } | |
4870 | ||
dc97997a | 4871 | int sanitize_rc6_option(struct drm_i915_private *dev_priv, int enable_rc6) |
2b4e57bd | 4872 | { |
e7d66d89 | 4873 | /* No RC6 before Ironlake and code is gone for ilk. */ |
dc97997a | 4874 | if (INTEL_INFO(dev_priv)->gen < 6) |
e6069ca8 ID |
4875 | return 0; |
4876 | ||
274008e8 SAK |
4877 | if (!enable_rc6) |
4878 | return 0; | |
4879 | ||
dc97997a | 4880 | if (IS_BROXTON(dev_priv) && !bxt_check_bios_rc6_setup(dev_priv)) { |
274008e8 SAK |
4881 | DRM_INFO("RC6 disabled by BIOS\n"); |
4882 | return 0; | |
4883 | } | |
4884 | ||
456470eb | 4885 | /* Respect the kernel parameter if it is set */ |
e6069ca8 ID |
4886 | if (enable_rc6 >= 0) { |
4887 | int mask; | |
4888 | ||
dc97997a | 4889 | if (HAS_RC6p(dev_priv)) |
e6069ca8 ID |
4890 | mask = INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE | |
4891 | INTEL_RC6pp_ENABLE; | |
4892 | else | |
4893 | mask = INTEL_RC6_ENABLE; | |
4894 | ||
4895 | if ((enable_rc6 & mask) != enable_rc6) | |
8dfd1f04 DV |
4896 | DRM_DEBUG_KMS("Adjusting RC6 mask to %d (requested %d, valid %d)\n", |
4897 | enable_rc6 & mask, enable_rc6, mask); | |
e6069ca8 ID |
4898 | |
4899 | return enable_rc6 & mask; | |
4900 | } | |
2b4e57bd | 4901 | |
dc97997a | 4902 | if (IS_IVYBRIDGE(dev_priv)) |
cca84a1f | 4903 | return (INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE); |
8bade1ad BW |
4904 | |
4905 | return INTEL_RC6_ENABLE; | |
2b4e57bd ED |
4906 | } |
4907 | ||
dc97997a | 4908 | static void gen6_init_rps_frequencies(struct drm_i915_private *dev_priv) |
3280e8b0 | 4909 | { |
93ee2920 TR |
4910 | uint32_t rp_state_cap; |
4911 | u32 ddcc_status = 0; | |
4912 | int ret; | |
4913 | ||
3280e8b0 BW |
4914 | /* All of these values are in units of 50MHz */ |
4915 | dev_priv->rps.cur_freq = 0; | |
93ee2920 | 4916 | /* static values from HW: RP0 > RP1 > RPn (min_freq) */ |
dc97997a | 4917 | if (IS_BROXTON(dev_priv)) { |
35040562 BP |
4918 | rp_state_cap = I915_READ(BXT_RP_STATE_CAP); |
4919 | dev_priv->rps.rp0_freq = (rp_state_cap >> 16) & 0xff; | |
4920 | dev_priv->rps.rp1_freq = (rp_state_cap >> 8) & 0xff; | |
4921 | dev_priv->rps.min_freq = (rp_state_cap >> 0) & 0xff; | |
4922 | } else { | |
4923 | rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); | |
4924 | dev_priv->rps.rp0_freq = (rp_state_cap >> 0) & 0xff; | |
4925 | dev_priv->rps.rp1_freq = (rp_state_cap >> 8) & 0xff; | |
4926 | dev_priv->rps.min_freq = (rp_state_cap >> 16) & 0xff; | |
4927 | } | |
4928 | ||
3280e8b0 BW |
4929 | /* hw_max = RP0 until we check for overclocking */ |
4930 | dev_priv->rps.max_freq = dev_priv->rps.rp0_freq; | |
4931 | ||
93ee2920 | 4932 | dev_priv->rps.efficient_freq = dev_priv->rps.rp1_freq; |
dc97997a CW |
4933 | if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv) || |
4934 | IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { | |
93ee2920 TR |
4935 | ret = sandybridge_pcode_read(dev_priv, |
4936 | HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL, | |
4937 | &ddcc_status); | |
4938 | if (0 == ret) | |
4939 | dev_priv->rps.efficient_freq = | |
46efa4ab TR |
4940 | clamp_t(u8, |
4941 | ((ddcc_status >> 8) & 0xff), | |
4942 | dev_priv->rps.min_freq, | |
4943 | dev_priv->rps.max_freq); | |
93ee2920 TR |
4944 | } |
4945 | ||
dc97997a | 4946 | if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { |
c5e0688c AG |
4947 | /* Store the frequency values in 16.66 MHZ units, which is |
4948 | the natural hardware unit for SKL */ | |
4949 | dev_priv->rps.rp0_freq *= GEN9_FREQ_SCALER; | |
4950 | dev_priv->rps.rp1_freq *= GEN9_FREQ_SCALER; | |
4951 | dev_priv->rps.min_freq *= GEN9_FREQ_SCALER; | |
4952 | dev_priv->rps.max_freq *= GEN9_FREQ_SCALER; | |
4953 | dev_priv->rps.efficient_freq *= GEN9_FREQ_SCALER; | |
4954 | } | |
4955 | ||
aed242ff CW |
4956 | dev_priv->rps.idle_freq = dev_priv->rps.min_freq; |
4957 | ||
3280e8b0 BW |
4958 | /* Preserve min/max settings in case of re-init */ |
4959 | if (dev_priv->rps.max_freq_softlimit == 0) | |
4960 | dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; | |
4961 | ||
93ee2920 | 4962 | if (dev_priv->rps.min_freq_softlimit == 0) { |
dc97997a | 4963 | if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) |
93ee2920 | 4964 | dev_priv->rps.min_freq_softlimit = |
813b5e69 VS |
4965 | max_t(int, dev_priv->rps.efficient_freq, |
4966 | intel_freq_opcode(dev_priv, 450)); | |
93ee2920 TR |
4967 | else |
4968 | dev_priv->rps.min_freq_softlimit = | |
4969 | dev_priv->rps.min_freq; | |
4970 | } | |
3280e8b0 BW |
4971 | } |
4972 | ||
b6fef0ef | 4973 | /* See the Gen9_GT_PM_Programming_Guide doc for the below */ |
dc97997a | 4974 | static void gen9_enable_rps(struct drm_i915_private *dev_priv) |
b6fef0ef | 4975 | { |
b6fef0ef JB |
4976 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
4977 | ||
dc97997a | 4978 | gen6_init_rps_frequencies(dev_priv); |
ba1c554c | 4979 | |
23eafea6 | 4980 | /* WaGsvDisableTurbo: Workaround to disable turbo on BXT A* */ |
dc97997a | 4981 | if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) { |
2030d684 AG |
4982 | /* |
4983 | * BIOS could leave the Hw Turbo enabled, so need to explicitly | |
4984 | * clear out the Control register just to avoid inconsitency | |
4985 | * with debugfs interface, which will show Turbo as enabled | |
4986 | * only and that is not expected by the User after adding the | |
4987 | * WaGsvDisableTurbo. Apart from this there is no problem even | |
4988 | * if the Turbo is left enabled in the Control register, as the | |
4989 | * Up/Down interrupts would remain masked. | |
4990 | */ | |
dc97997a | 4991 | gen9_disable_rps(dev_priv); |
23eafea6 SAK |
4992 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
4993 | return; | |
4994 | } | |
4995 | ||
0beb059a AG |
4996 | /* Program defaults and thresholds for RPS*/ |
4997 | I915_WRITE(GEN6_RC_VIDEO_FREQ, | |
4998 | GEN9_FREQUENCY(dev_priv->rps.rp1_freq)); | |
4999 | ||
5000 | /* 1 second timeout*/ | |
5001 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, | |
5002 | GT_INTERVAL_FROM_US(dev_priv, 1000000)); | |
5003 | ||
b6fef0ef | 5004 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 0xa); |
b6fef0ef | 5005 | |
0beb059a AG |
5006 | /* Leaning on the below call to gen6_set_rps to program/setup the |
5007 | * Up/Down EI & threshold registers, as well as the RP_CONTROL, | |
5008 | * RP_INTERRUPT_LIMITS & RPNSWREQ registers */ | |
5009 | dev_priv->rps.power = HIGH_POWER; /* force a reset */ | |
dc97997a | 5010 | gen6_set_rps(dev_priv, dev_priv->rps.idle_freq); |
b6fef0ef JB |
5011 | |
5012 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); | |
5013 | } | |
5014 | ||
dc97997a | 5015 | static void gen9_enable_rc6(struct drm_i915_private *dev_priv) |
20e49366 | 5016 | { |
e2f80391 | 5017 | struct intel_engine_cs *engine; |
20e49366 | 5018 | uint32_t rc6_mask = 0; |
20e49366 ZW |
5019 | |
5020 | /* 1a: Software RC state - RC0 */ | |
5021 | I915_WRITE(GEN6_RC_STATE, 0); | |
5022 | ||
5023 | /* 1b: Get forcewake during program sequence. Although the driver | |
5024 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 5025 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
20e49366 ZW |
5026 | |
5027 | /* 2a: Disable RC states. */ | |
5028 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
5029 | ||
5030 | /* 2b: Program RC6 thresholds.*/ | |
63a4dec2 SAK |
5031 | |
5032 | /* WaRsDoubleRc6WrlWithCoarsePowerGating: Doubling WRL only when CPG is enabled */ | |
dc97997a | 5033 | if (IS_SKYLAKE(dev_priv)) |
63a4dec2 SAK |
5034 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 108 << 16); |
5035 | else | |
5036 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16); | |
20e49366 ZW |
5037 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ |
5038 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
b4ac5afc | 5039 | for_each_engine(engine, dev_priv) |
e2f80391 | 5040 | I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10); |
97c322e7 | 5041 | |
dc97997a | 5042 | if (HAS_GUC_UCODE(dev_priv)) |
97c322e7 SAK |
5043 | I915_WRITE(GUC_MAX_IDLE_COUNT, 0xA); |
5044 | ||
20e49366 | 5045 | I915_WRITE(GEN6_RC_SLEEP, 0); |
20e49366 | 5046 | |
38c23527 ZW |
5047 | /* 2c: Program Coarse Power Gating Policies. */ |
5048 | I915_WRITE(GEN9_MEDIA_PG_IDLE_HYSTERESIS, 25); | |
5049 | I915_WRITE(GEN9_RENDER_PG_IDLE_HYSTERESIS, 25); | |
5050 | ||
20e49366 | 5051 | /* 3a: Enable RC6 */ |
dc97997a | 5052 | if (intel_enable_rc6() & INTEL_RC6_ENABLE) |
20e49366 | 5053 | rc6_mask = GEN6_RC_CTL_RC6_ENABLE; |
87ad3212 | 5054 | DRM_INFO("RC6 %s\n", onoff(rc6_mask & GEN6_RC_CTL_RC6_ENABLE)); |
3e7732a0 | 5055 | /* WaRsUseTimeoutMode */ |
dc97997a CW |
5056 | if (IS_SKL_REVID(dev_priv, 0, SKL_REVID_D0) || |
5057 | IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) { | |
3e7732a0 | 5058 | I915_WRITE(GEN6_RC6_THRESHOLD, 625); /* 800us */ |
e3429cd2 SAK |
5059 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | |
5060 | GEN7_RC_CTL_TO_MODE | | |
5061 | rc6_mask); | |
3e7732a0 SAK |
5062 | } else { |
5063 | I915_WRITE(GEN6_RC6_THRESHOLD, 37500); /* 37.5/125ms per EI */ | |
e3429cd2 SAK |
5064 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | |
5065 | GEN6_RC_CTL_EI_MODE(1) | | |
5066 | rc6_mask); | |
3e7732a0 | 5067 | } |
20e49366 | 5068 | |
cb07bae0 SK |
5069 | /* |
5070 | * 3b: Enable Coarse Power Gating only when RC6 is enabled. | |
f2d2fe95 | 5071 | * WaRsDisableCoarsePowerGating:skl,bxt - Render/Media PG need to be disabled with RC6. |
cb07bae0 | 5072 | */ |
dc97997a | 5073 | if (NEEDS_WaRsDisableCoarsePowerGating(dev_priv)) |
f2d2fe95 SAK |
5074 | I915_WRITE(GEN9_PG_ENABLE, 0); |
5075 | else | |
5076 | I915_WRITE(GEN9_PG_ENABLE, (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ? | |
5077 | (GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE) : 0); | |
38c23527 | 5078 | |
59bad947 | 5079 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
20e49366 ZW |
5080 | } |
5081 | ||
dc97997a | 5082 | static void gen8_enable_rps(struct drm_i915_private *dev_priv) |
6edee7f3 | 5083 | { |
e2f80391 | 5084 | struct intel_engine_cs *engine; |
93ee2920 | 5085 | uint32_t rc6_mask = 0; |
6edee7f3 BW |
5086 | |
5087 | /* 1a: Software RC state - RC0 */ | |
5088 | I915_WRITE(GEN6_RC_STATE, 0); | |
5089 | ||
5090 | /* 1c & 1d: Get forcewake during program sequence. Although the driver | |
5091 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 5092 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
6edee7f3 BW |
5093 | |
5094 | /* 2a: Disable RC states. */ | |
5095 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
5096 | ||
93ee2920 | 5097 | /* Initialize rps frequencies */ |
dc97997a | 5098 | gen6_init_rps_frequencies(dev_priv); |
6edee7f3 BW |
5099 | |
5100 | /* 2b: Program RC6 thresholds.*/ | |
5101 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16); | |
5102 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ | |
5103 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
b4ac5afc | 5104 | for_each_engine(engine, dev_priv) |
e2f80391 | 5105 | I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10); |
6edee7f3 | 5106 | I915_WRITE(GEN6_RC_SLEEP, 0); |
dc97997a | 5107 | if (IS_BROADWELL(dev_priv)) |
0d68b25e TR |
5108 | I915_WRITE(GEN6_RC6_THRESHOLD, 625); /* 800us/1.28 for TO */ |
5109 | else | |
5110 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); /* 50/125ms per EI */ | |
6edee7f3 BW |
5111 | |
5112 | /* 3: Enable RC6 */ | |
dc97997a | 5113 | if (intel_enable_rc6() & INTEL_RC6_ENABLE) |
6edee7f3 | 5114 | rc6_mask = GEN6_RC_CTL_RC6_ENABLE; |
dc97997a CW |
5115 | intel_print_rc6_info(dev_priv, rc6_mask); |
5116 | if (IS_BROADWELL(dev_priv)) | |
0d68b25e TR |
5117 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | |
5118 | GEN7_RC_CTL_TO_MODE | | |
5119 | rc6_mask); | |
5120 | else | |
5121 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | | |
5122 | GEN6_RC_CTL_EI_MODE(1) | | |
5123 | rc6_mask); | |
6edee7f3 BW |
5124 | |
5125 | /* 4 Program defaults and thresholds for RPS*/ | |
f9bdc585 BW |
5126 | I915_WRITE(GEN6_RPNSWREQ, |
5127 | HSW_FREQUENCY(dev_priv->rps.rp1_freq)); | |
5128 | I915_WRITE(GEN6_RC_VIDEO_FREQ, | |
5129 | HSW_FREQUENCY(dev_priv->rps.rp1_freq)); | |
7526ed79 DV |
5130 | /* NB: Docs say 1s, and 1000000 - which aren't equivalent */ |
5131 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 100000000 / 128); /* 1 second timeout */ | |
5132 | ||
5133 | /* Docs recommend 900MHz, and 300 MHz respectively */ | |
5134 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, | |
5135 | dev_priv->rps.max_freq_softlimit << 24 | | |
5136 | dev_priv->rps.min_freq_softlimit << 16); | |
5137 | ||
5138 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 7600000 / 128); /* 76ms busyness per EI, 90% */ | |
5139 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 31300000 / 128); /* 313ms busyness per EI, 70%*/ | |
5140 | I915_WRITE(GEN6_RP_UP_EI, 66000); /* 84.48ms, XXX: random? */ | |
5141 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); /* 448ms, XXX: random? */ | |
5142 | ||
5143 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
6edee7f3 BW |
5144 | |
5145 | /* 5: Enable RPS */ | |
7526ed79 DV |
5146 | I915_WRITE(GEN6_RP_CONTROL, |
5147 | GEN6_RP_MEDIA_TURBO | | |
5148 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
5149 | GEN6_RP_MEDIA_IS_GFX | | |
5150 | GEN6_RP_ENABLE | | |
5151 | GEN6_RP_UP_BUSY_AVG | | |
5152 | GEN6_RP_DOWN_IDLE_AVG); | |
5153 | ||
5154 | /* 6: Ring frequency + overclocking (our driver does this later */ | |
5155 | ||
c7f3153a | 5156 | dev_priv->rps.power = HIGH_POWER; /* force a reset */ |
dc97997a | 5157 | gen6_set_rps(dev_priv, dev_priv->rps.idle_freq); |
7526ed79 | 5158 | |
59bad947 | 5159 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
6edee7f3 BW |
5160 | } |
5161 | ||
dc97997a | 5162 | static void gen6_enable_rps(struct drm_i915_private *dev_priv) |
2b4e57bd | 5163 | { |
e2f80391 | 5164 | struct intel_engine_cs *engine; |
d060c169 | 5165 | u32 rc6vids, pcu_mbox = 0, rc6_mask = 0; |
2b4e57bd | 5166 | u32 gtfifodbg; |
2b4e57bd | 5167 | int rc6_mode; |
b4ac5afc | 5168 | int ret; |
2b4e57bd | 5169 | |
4fc688ce | 5170 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 5171 | |
2b4e57bd ED |
5172 | /* Here begins a magic sequence of register writes to enable |
5173 | * auto-downclocking. | |
5174 | * | |
5175 | * Perhaps there might be some value in exposing these to | |
5176 | * userspace... | |
5177 | */ | |
5178 | I915_WRITE(GEN6_RC_STATE, 0); | |
2b4e57bd ED |
5179 | |
5180 | /* Clear the DBG now so we don't confuse earlier errors */ | |
297b32ec VS |
5181 | gtfifodbg = I915_READ(GTFIFODBG); |
5182 | if (gtfifodbg) { | |
2b4e57bd ED |
5183 | DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg); |
5184 | I915_WRITE(GTFIFODBG, gtfifodbg); | |
5185 | } | |
5186 | ||
59bad947 | 5187 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
2b4e57bd | 5188 | |
93ee2920 | 5189 | /* Initialize rps frequencies */ |
dc97997a | 5190 | gen6_init_rps_frequencies(dev_priv); |
dd0a1aa1 | 5191 | |
2b4e57bd ED |
5192 | /* disable the counters and set deterministic thresholds */ |
5193 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
5194 | ||
5195 | I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16); | |
5196 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30); | |
5197 | I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30); | |
5198 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
5199 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
5200 | ||
b4ac5afc | 5201 | for_each_engine(engine, dev_priv) |
e2f80391 | 5202 | I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10); |
2b4e57bd ED |
5203 | |
5204 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
5205 | I915_WRITE(GEN6_RC1e_THRESHOLD, 1000); | |
dc97997a | 5206 | if (IS_IVYBRIDGE(dev_priv)) |
351aa566 SM |
5207 | I915_WRITE(GEN6_RC6_THRESHOLD, 125000); |
5208 | else | |
5209 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); | |
0920a487 | 5210 | I915_WRITE(GEN6_RC6p_THRESHOLD, 150000); |
2b4e57bd ED |
5211 | I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */ |
5212 | ||
5a7dc92a | 5213 | /* Check if we are enabling RC6 */ |
dc97997a | 5214 | rc6_mode = intel_enable_rc6(); |
2b4e57bd ED |
5215 | if (rc6_mode & INTEL_RC6_ENABLE) |
5216 | rc6_mask |= GEN6_RC_CTL_RC6_ENABLE; | |
5217 | ||
5a7dc92a | 5218 | /* We don't use those on Haswell */ |
dc97997a | 5219 | if (!IS_HASWELL(dev_priv)) { |
5a7dc92a ED |
5220 | if (rc6_mode & INTEL_RC6p_ENABLE) |
5221 | rc6_mask |= GEN6_RC_CTL_RC6p_ENABLE; | |
2b4e57bd | 5222 | |
5a7dc92a ED |
5223 | if (rc6_mode & INTEL_RC6pp_ENABLE) |
5224 | rc6_mask |= GEN6_RC_CTL_RC6pp_ENABLE; | |
5225 | } | |
2b4e57bd | 5226 | |
dc97997a | 5227 | intel_print_rc6_info(dev_priv, rc6_mask); |
2b4e57bd ED |
5228 | |
5229 | I915_WRITE(GEN6_RC_CONTROL, | |
5230 | rc6_mask | | |
5231 | GEN6_RC_CTL_EI_MODE(1) | | |
5232 | GEN6_RC_CTL_HW_ENABLE); | |
5233 | ||
dd75fdc8 CW |
5234 | /* Power down if completely idle for over 50ms */ |
5235 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 50000); | |
2b4e57bd | 5236 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); |
2b4e57bd | 5237 | |
42c0526c | 5238 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_MIN_FREQ_TABLE, 0); |
d060c169 | 5239 | if (ret) |
42c0526c | 5240 | DRM_DEBUG_DRIVER("Failed to set the min frequency\n"); |
d060c169 BW |
5241 | |
5242 | ret = sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS, &pcu_mbox); | |
5243 | if (!ret && (pcu_mbox & (1<<31))) { /* OC supported */ | |
5244 | DRM_DEBUG_DRIVER("Overclocking supported. Max: %dMHz, Overclock max: %dMHz\n", | |
b39fb297 | 5245 | (dev_priv->rps.max_freq_softlimit & 0xff) * 50, |
d060c169 | 5246 | (pcu_mbox & 0xff) * 50); |
b39fb297 | 5247 | dev_priv->rps.max_freq = pcu_mbox & 0xff; |
2b4e57bd ED |
5248 | } |
5249 | ||
dd75fdc8 | 5250 | dev_priv->rps.power = HIGH_POWER; /* force a reset */ |
dc97997a | 5251 | gen6_set_rps(dev_priv, dev_priv->rps.idle_freq); |
2b4e57bd | 5252 | |
31643d54 BW |
5253 | rc6vids = 0; |
5254 | ret = sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids); | |
dc97997a | 5255 | if (IS_GEN6(dev_priv) && ret) { |
31643d54 | 5256 | DRM_DEBUG_DRIVER("Couldn't check for BIOS workaround\n"); |
dc97997a | 5257 | } else if (IS_GEN6(dev_priv) && (GEN6_DECODE_RC6_VID(rc6vids & 0xff) < 450)) { |
31643d54 BW |
5258 | DRM_DEBUG_DRIVER("You should update your BIOS. Correcting minimum rc6 voltage (%dmV->%dmV)\n", |
5259 | GEN6_DECODE_RC6_VID(rc6vids & 0xff), 450); | |
5260 | rc6vids &= 0xffff00; | |
5261 | rc6vids |= GEN6_ENCODE_RC6_VID(450); | |
5262 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_RC6VIDS, rc6vids); | |
5263 | if (ret) | |
5264 | DRM_ERROR("Couldn't fix incorrect rc6 voltage\n"); | |
5265 | } | |
5266 | ||
59bad947 | 5267 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
2b4e57bd ED |
5268 | } |
5269 | ||
dc97997a | 5270 | static void __gen6_update_ring_freq(struct drm_i915_private *dev_priv) |
2b4e57bd ED |
5271 | { |
5272 | int min_freq = 15; | |
3ebecd07 CW |
5273 | unsigned int gpu_freq; |
5274 | unsigned int max_ia_freq, min_ring_freq; | |
4c8c7743 | 5275 | unsigned int max_gpu_freq, min_gpu_freq; |
2b4e57bd | 5276 | int scaling_factor = 180; |
eda79642 | 5277 | struct cpufreq_policy *policy; |
2b4e57bd | 5278 | |
4fc688ce | 5279 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 5280 | |
eda79642 BW |
5281 | policy = cpufreq_cpu_get(0); |
5282 | if (policy) { | |
5283 | max_ia_freq = policy->cpuinfo.max_freq; | |
5284 | cpufreq_cpu_put(policy); | |
5285 | } else { | |
5286 | /* | |
5287 | * Default to measured freq if none found, PCU will ensure we | |
5288 | * don't go over | |
5289 | */ | |
2b4e57bd | 5290 | max_ia_freq = tsc_khz; |
eda79642 | 5291 | } |
2b4e57bd ED |
5292 | |
5293 | /* Convert from kHz to MHz */ | |
5294 | max_ia_freq /= 1000; | |
5295 | ||
153b4b95 | 5296 | min_ring_freq = I915_READ(DCLK) & 0xf; |
f6aca45c BW |
5297 | /* convert DDR frequency from units of 266.6MHz to bandwidth */ |
5298 | min_ring_freq = mult_frac(min_ring_freq, 8, 3); | |
3ebecd07 | 5299 | |
dc97997a | 5300 | if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { |
4c8c7743 AG |
5301 | /* Convert GT frequency to 50 HZ units */ |
5302 | min_gpu_freq = dev_priv->rps.min_freq / GEN9_FREQ_SCALER; | |
5303 | max_gpu_freq = dev_priv->rps.max_freq / GEN9_FREQ_SCALER; | |
5304 | } else { | |
5305 | min_gpu_freq = dev_priv->rps.min_freq; | |
5306 | max_gpu_freq = dev_priv->rps.max_freq; | |
5307 | } | |
5308 | ||
2b4e57bd ED |
5309 | /* |
5310 | * For each potential GPU frequency, load a ring frequency we'd like | |
5311 | * to use for memory access. We do this by specifying the IA frequency | |
5312 | * the PCU should use as a reference to determine the ring frequency. | |
5313 | */ | |
4c8c7743 AG |
5314 | for (gpu_freq = max_gpu_freq; gpu_freq >= min_gpu_freq; gpu_freq--) { |
5315 | int diff = max_gpu_freq - gpu_freq; | |
3ebecd07 CW |
5316 | unsigned int ia_freq = 0, ring_freq = 0; |
5317 | ||
dc97997a | 5318 | if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { |
4c8c7743 AG |
5319 | /* |
5320 | * ring_freq = 2 * GT. ring_freq is in 100MHz units | |
5321 | * No floor required for ring frequency on SKL. | |
5322 | */ | |
5323 | ring_freq = gpu_freq; | |
dc97997a | 5324 | } else if (INTEL_INFO(dev_priv)->gen >= 8) { |
46c764d4 BW |
5325 | /* max(2 * GT, DDR). NB: GT is 50MHz units */ |
5326 | ring_freq = max(min_ring_freq, gpu_freq); | |
dc97997a | 5327 | } else if (IS_HASWELL(dev_priv)) { |
f6aca45c | 5328 | ring_freq = mult_frac(gpu_freq, 5, 4); |
3ebecd07 CW |
5329 | ring_freq = max(min_ring_freq, ring_freq); |
5330 | /* leave ia_freq as the default, chosen by cpufreq */ | |
5331 | } else { | |
5332 | /* On older processors, there is no separate ring | |
5333 | * clock domain, so in order to boost the bandwidth | |
5334 | * of the ring, we need to upclock the CPU (ia_freq). | |
5335 | * | |
5336 | * For GPU frequencies less than 750MHz, | |
5337 | * just use the lowest ring freq. | |
5338 | */ | |
5339 | if (gpu_freq < min_freq) | |
5340 | ia_freq = 800; | |
5341 | else | |
5342 | ia_freq = max_ia_freq - ((diff * scaling_factor) / 2); | |
5343 | ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100); | |
5344 | } | |
2b4e57bd | 5345 | |
42c0526c BW |
5346 | sandybridge_pcode_write(dev_priv, |
5347 | GEN6_PCODE_WRITE_MIN_FREQ_TABLE, | |
3ebecd07 CW |
5348 | ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT | |
5349 | ring_freq << GEN6_PCODE_FREQ_RING_RATIO_SHIFT | | |
5350 | gpu_freq); | |
2b4e57bd | 5351 | } |
2b4e57bd ED |
5352 | } |
5353 | ||
dc97997a | 5354 | void gen6_update_ring_freq(struct drm_i915_private *dev_priv) |
c2bc2fc5 | 5355 | { |
dc97997a | 5356 | if (!HAS_CORE_RING_FREQ(dev_priv)) |
c2bc2fc5 ID |
5357 | return; |
5358 | ||
5359 | mutex_lock(&dev_priv->rps.hw_lock); | |
dc97997a | 5360 | __gen6_update_ring_freq(dev_priv); |
c2bc2fc5 ID |
5361 | mutex_unlock(&dev_priv->rps.hw_lock); |
5362 | } | |
5363 | ||
03af2045 | 5364 | static int cherryview_rps_max_freq(struct drm_i915_private *dev_priv) |
2b6b3a09 D |
5365 | { |
5366 | u32 val, rp0; | |
5367 | ||
5b5929cb | 5368 | val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE); |
2b6b3a09 | 5369 | |
dc97997a | 5370 | switch (INTEL_INFO(dev_priv)->eu_total) { |
5b5929cb JN |
5371 | case 8: |
5372 | /* (2 * 4) config */ | |
5373 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS4EU_FUSE_SHIFT); | |
5374 | break; | |
5375 | case 12: | |
5376 | /* (2 * 6) config */ | |
5377 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS6EU_FUSE_SHIFT); | |
5378 | break; | |
5379 | case 16: | |
5380 | /* (2 * 8) config */ | |
5381 | default: | |
5382 | /* Setting (2 * 8) Min RP0 for any other combination */ | |
5383 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS8EU_FUSE_SHIFT); | |
5384 | break; | |
095acd5f | 5385 | } |
5b5929cb JN |
5386 | |
5387 | rp0 = (rp0 & FB_GFX_FREQ_FUSE_MASK); | |
5388 | ||
2b6b3a09 D |
5389 | return rp0; |
5390 | } | |
5391 | ||
5392 | static int cherryview_rps_rpe_freq(struct drm_i915_private *dev_priv) | |
5393 | { | |
5394 | u32 val, rpe; | |
5395 | ||
5396 | val = vlv_punit_read(dev_priv, PUNIT_GPU_DUTYCYCLE_REG); | |
5397 | rpe = (val >> PUNIT_GPU_DUTYCYCLE_RPE_FREQ_SHIFT) & PUNIT_GPU_DUTYCYCLE_RPE_FREQ_MASK; | |
5398 | ||
5399 | return rpe; | |
5400 | } | |
5401 | ||
7707df4a D |
5402 | static int cherryview_rps_guar_freq(struct drm_i915_private *dev_priv) |
5403 | { | |
5404 | u32 val, rp1; | |
5405 | ||
5b5929cb JN |
5406 | val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE); |
5407 | rp1 = (val & FB_GFX_FREQ_FUSE_MASK); | |
5408 | ||
7707df4a D |
5409 | return rp1; |
5410 | } | |
5411 | ||
f8f2b001 D |
5412 | static int valleyview_rps_guar_freq(struct drm_i915_private *dev_priv) |
5413 | { | |
5414 | u32 val, rp1; | |
5415 | ||
5416 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE); | |
5417 | ||
5418 | rp1 = (val & FB_GFX_FGUARANTEED_FREQ_FUSE_MASK) >> FB_GFX_FGUARANTEED_FREQ_FUSE_SHIFT; | |
5419 | ||
5420 | return rp1; | |
5421 | } | |
5422 | ||
03af2045 | 5423 | static int valleyview_rps_max_freq(struct drm_i915_private *dev_priv) |
0a073b84 JB |
5424 | { |
5425 | u32 val, rp0; | |
5426 | ||
64936258 | 5427 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE); |
0a073b84 JB |
5428 | |
5429 | rp0 = (val & FB_GFX_MAX_FREQ_FUSE_MASK) >> FB_GFX_MAX_FREQ_FUSE_SHIFT; | |
5430 | /* Clamp to max */ | |
5431 | rp0 = min_t(u32, rp0, 0xea); | |
5432 | ||
5433 | return rp0; | |
5434 | } | |
5435 | ||
5436 | static int valleyview_rps_rpe_freq(struct drm_i915_private *dev_priv) | |
5437 | { | |
5438 | u32 val, rpe; | |
5439 | ||
64936258 | 5440 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_LO); |
0a073b84 | 5441 | rpe = (val & FB_FMAX_VMIN_FREQ_LO_MASK) >> FB_FMAX_VMIN_FREQ_LO_SHIFT; |
64936258 | 5442 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_HI); |
0a073b84 JB |
5443 | rpe |= (val & FB_FMAX_VMIN_FREQ_HI_MASK) << 5; |
5444 | ||
5445 | return rpe; | |
5446 | } | |
5447 | ||
03af2045 | 5448 | static int valleyview_rps_min_freq(struct drm_i915_private *dev_priv) |
0a073b84 | 5449 | { |
36146035 ID |
5450 | u32 val; |
5451 | ||
5452 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM) & 0xff; | |
5453 | /* | |
5454 | * According to the BYT Punit GPU turbo HAS 1.1.6.3 the minimum value | |
5455 | * for the minimum frequency in GPLL mode is 0xc1. Contrary to this on | |
5456 | * a BYT-M B0 the above register contains 0xbf. Moreover when setting | |
5457 | * a frequency Punit will not allow values below 0xc0. Clamp it 0xc0 | |
5458 | * to make sure it matches what Punit accepts. | |
5459 | */ | |
5460 | return max_t(u32, val, 0xc0); | |
0a073b84 JB |
5461 | } |
5462 | ||
ae48434c ID |
5463 | /* Check that the pctx buffer wasn't move under us. */ |
5464 | static void valleyview_check_pctx(struct drm_i915_private *dev_priv) | |
5465 | { | |
5466 | unsigned long pctx_addr = I915_READ(VLV_PCBR) & ~4095; | |
5467 | ||
5468 | WARN_ON(pctx_addr != dev_priv->mm.stolen_base + | |
5469 | dev_priv->vlv_pctx->stolen->start); | |
5470 | } | |
5471 | ||
38807746 D |
5472 | |
5473 | /* Check that the pcbr address is not empty. */ | |
5474 | static void cherryview_check_pctx(struct drm_i915_private *dev_priv) | |
5475 | { | |
5476 | unsigned long pctx_addr = I915_READ(VLV_PCBR) & ~4095; | |
5477 | ||
5478 | WARN_ON((pctx_addr >> VLV_PCBR_ADDR_SHIFT) == 0); | |
5479 | } | |
5480 | ||
dc97997a | 5481 | static void cherryview_setup_pctx(struct drm_i915_private *dev_priv) |
38807746 | 5482 | { |
62106b4f | 5483 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
72e96d64 | 5484 | unsigned long pctx_paddr, paddr; |
38807746 D |
5485 | u32 pcbr; |
5486 | int pctx_size = 32*1024; | |
5487 | ||
38807746 D |
5488 | pcbr = I915_READ(VLV_PCBR); |
5489 | if ((pcbr >> VLV_PCBR_ADDR_SHIFT) == 0) { | |
ce611ef8 | 5490 | DRM_DEBUG_DRIVER("BIOS didn't set up PCBR, fixing up\n"); |
38807746 | 5491 | paddr = (dev_priv->mm.stolen_base + |
62106b4f | 5492 | (ggtt->stolen_size - pctx_size)); |
38807746 D |
5493 | |
5494 | pctx_paddr = (paddr & (~4095)); | |
5495 | I915_WRITE(VLV_PCBR, pctx_paddr); | |
5496 | } | |
ce611ef8 VS |
5497 | |
5498 | DRM_DEBUG_DRIVER("PCBR: 0x%08x\n", I915_READ(VLV_PCBR)); | |
38807746 D |
5499 | } |
5500 | ||
dc97997a | 5501 | static void valleyview_setup_pctx(struct drm_i915_private *dev_priv) |
c9cddffc | 5502 | { |
c9cddffc JB |
5503 | struct drm_i915_gem_object *pctx; |
5504 | unsigned long pctx_paddr; | |
5505 | u32 pcbr; | |
5506 | int pctx_size = 24*1024; | |
5507 | ||
dc97997a | 5508 | mutex_lock(&dev_priv->dev->struct_mutex); |
17b0c1f7 | 5509 | |
c9cddffc JB |
5510 | pcbr = I915_READ(VLV_PCBR); |
5511 | if (pcbr) { | |
5512 | /* BIOS set it up already, grab the pre-alloc'd space */ | |
5513 | int pcbr_offset; | |
5514 | ||
5515 | pcbr_offset = (pcbr & (~4095)) - dev_priv->mm.stolen_base; | |
5516 | pctx = i915_gem_object_create_stolen_for_preallocated(dev_priv->dev, | |
5517 | pcbr_offset, | |
190d6cd5 | 5518 | I915_GTT_OFFSET_NONE, |
c9cddffc JB |
5519 | pctx_size); |
5520 | goto out; | |
5521 | } | |
5522 | ||
ce611ef8 VS |
5523 | DRM_DEBUG_DRIVER("BIOS didn't set up PCBR, fixing up\n"); |
5524 | ||
c9cddffc JB |
5525 | /* |
5526 | * From the Gunit register HAS: | |
5527 | * The Gfx driver is expected to program this register and ensure | |
5528 | * proper allocation within Gfx stolen memory. For example, this | |
5529 | * register should be programmed such than the PCBR range does not | |
5530 | * overlap with other ranges, such as the frame buffer, protected | |
5531 | * memory, or any other relevant ranges. | |
5532 | */ | |
dc97997a | 5533 | pctx = i915_gem_object_create_stolen(dev_priv->dev, pctx_size); |
c9cddffc JB |
5534 | if (!pctx) { |
5535 | DRM_DEBUG("not enough stolen space for PCTX, disabling\n"); | |
ee504898 | 5536 | goto out; |
c9cddffc JB |
5537 | } |
5538 | ||
5539 | pctx_paddr = dev_priv->mm.stolen_base + pctx->stolen->start; | |
5540 | I915_WRITE(VLV_PCBR, pctx_paddr); | |
5541 | ||
5542 | out: | |
ce611ef8 | 5543 | DRM_DEBUG_DRIVER("PCBR: 0x%08x\n", I915_READ(VLV_PCBR)); |
c9cddffc | 5544 | dev_priv->vlv_pctx = pctx; |
dc97997a | 5545 | mutex_unlock(&dev_priv->dev->struct_mutex); |
c9cddffc JB |
5546 | } |
5547 | ||
dc97997a | 5548 | static void valleyview_cleanup_pctx(struct drm_i915_private *dev_priv) |
ae48434c | 5549 | { |
ae48434c ID |
5550 | if (WARN_ON(!dev_priv->vlv_pctx)) |
5551 | return; | |
5552 | ||
ee504898 | 5553 | drm_gem_object_unreference_unlocked(&dev_priv->vlv_pctx->base); |
ae48434c ID |
5554 | dev_priv->vlv_pctx = NULL; |
5555 | } | |
5556 | ||
c30fec65 VS |
5557 | static void vlv_init_gpll_ref_freq(struct drm_i915_private *dev_priv) |
5558 | { | |
5559 | dev_priv->rps.gpll_ref_freq = | |
5560 | vlv_get_cck_clock(dev_priv, "GPLL ref", | |
5561 | CCK_GPLL_CLOCK_CONTROL, | |
5562 | dev_priv->czclk_freq); | |
5563 | ||
5564 | DRM_DEBUG_DRIVER("GPLL reference freq: %d kHz\n", | |
5565 | dev_priv->rps.gpll_ref_freq); | |
5566 | } | |
5567 | ||
dc97997a | 5568 | static void valleyview_init_gt_powersave(struct drm_i915_private *dev_priv) |
4e80519e | 5569 | { |
2bb25c17 | 5570 | u32 val; |
4e80519e | 5571 | |
dc97997a | 5572 | valleyview_setup_pctx(dev_priv); |
4e80519e | 5573 | |
c30fec65 VS |
5574 | vlv_init_gpll_ref_freq(dev_priv); |
5575 | ||
4e80519e ID |
5576 | mutex_lock(&dev_priv->rps.hw_lock); |
5577 | ||
2bb25c17 VS |
5578 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
5579 | switch ((val >> 6) & 3) { | |
5580 | case 0: | |
5581 | case 1: | |
5582 | dev_priv->mem_freq = 800; | |
5583 | break; | |
5584 | case 2: | |
5585 | dev_priv->mem_freq = 1066; | |
5586 | break; | |
5587 | case 3: | |
5588 | dev_priv->mem_freq = 1333; | |
5589 | break; | |
5590 | } | |
80b83b62 | 5591 | DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", dev_priv->mem_freq); |
2bb25c17 | 5592 | |
4e80519e ID |
5593 | dev_priv->rps.max_freq = valleyview_rps_max_freq(dev_priv); |
5594 | dev_priv->rps.rp0_freq = dev_priv->rps.max_freq; | |
5595 | DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5596 | intel_gpu_freq(dev_priv, dev_priv->rps.max_freq), |
4e80519e ID |
5597 | dev_priv->rps.max_freq); |
5598 | ||
5599 | dev_priv->rps.efficient_freq = valleyview_rps_rpe_freq(dev_priv); | |
5600 | DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5601 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
4e80519e ID |
5602 | dev_priv->rps.efficient_freq); |
5603 | ||
f8f2b001 D |
5604 | dev_priv->rps.rp1_freq = valleyview_rps_guar_freq(dev_priv); |
5605 | DRM_DEBUG_DRIVER("RP1(Guar Freq) GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5606 | intel_gpu_freq(dev_priv, dev_priv->rps.rp1_freq), |
f8f2b001 D |
5607 | dev_priv->rps.rp1_freq); |
5608 | ||
4e80519e ID |
5609 | dev_priv->rps.min_freq = valleyview_rps_min_freq(dev_priv); |
5610 | DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5611 | intel_gpu_freq(dev_priv, dev_priv->rps.min_freq), |
4e80519e ID |
5612 | dev_priv->rps.min_freq); |
5613 | ||
aed242ff CW |
5614 | dev_priv->rps.idle_freq = dev_priv->rps.min_freq; |
5615 | ||
4e80519e ID |
5616 | /* Preserve min/max settings in case of re-init */ |
5617 | if (dev_priv->rps.max_freq_softlimit == 0) | |
5618 | dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; | |
5619 | ||
5620 | if (dev_priv->rps.min_freq_softlimit == 0) | |
5621 | dev_priv->rps.min_freq_softlimit = dev_priv->rps.min_freq; | |
5622 | ||
5623 | mutex_unlock(&dev_priv->rps.hw_lock); | |
5624 | } | |
5625 | ||
dc97997a | 5626 | static void cherryview_init_gt_powersave(struct drm_i915_private *dev_priv) |
38807746 | 5627 | { |
2bb25c17 | 5628 | u32 val; |
2b6b3a09 | 5629 | |
dc97997a | 5630 | cherryview_setup_pctx(dev_priv); |
2b6b3a09 | 5631 | |
c30fec65 VS |
5632 | vlv_init_gpll_ref_freq(dev_priv); |
5633 | ||
2b6b3a09 D |
5634 | mutex_lock(&dev_priv->rps.hw_lock); |
5635 | ||
a580516d | 5636 | mutex_lock(&dev_priv->sb_lock); |
c6e8f39d | 5637 | val = vlv_cck_read(dev_priv, CCK_FUSE_REG); |
a580516d | 5638 | mutex_unlock(&dev_priv->sb_lock); |
c6e8f39d | 5639 | |
2bb25c17 | 5640 | switch ((val >> 2) & 0x7) { |
2bb25c17 | 5641 | case 3: |
2bb25c17 VS |
5642 | dev_priv->mem_freq = 2000; |
5643 | break; | |
bfa7df01 | 5644 | default: |
2bb25c17 VS |
5645 | dev_priv->mem_freq = 1600; |
5646 | break; | |
5647 | } | |
80b83b62 | 5648 | DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", dev_priv->mem_freq); |
2bb25c17 | 5649 | |
2b6b3a09 D |
5650 | dev_priv->rps.max_freq = cherryview_rps_max_freq(dev_priv); |
5651 | dev_priv->rps.rp0_freq = dev_priv->rps.max_freq; | |
5652 | DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5653 | intel_gpu_freq(dev_priv, dev_priv->rps.max_freq), |
2b6b3a09 D |
5654 | dev_priv->rps.max_freq); |
5655 | ||
5656 | dev_priv->rps.efficient_freq = cherryview_rps_rpe_freq(dev_priv); | |
5657 | DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5658 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
2b6b3a09 D |
5659 | dev_priv->rps.efficient_freq); |
5660 | ||
7707df4a D |
5661 | dev_priv->rps.rp1_freq = cherryview_rps_guar_freq(dev_priv); |
5662 | DRM_DEBUG_DRIVER("RP1(Guar) GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5663 | intel_gpu_freq(dev_priv, dev_priv->rps.rp1_freq), |
7707df4a D |
5664 | dev_priv->rps.rp1_freq); |
5665 | ||
5b7c91b7 D |
5666 | /* PUnit validated range is only [RPe, RP0] */ |
5667 | dev_priv->rps.min_freq = dev_priv->rps.efficient_freq; | |
2b6b3a09 | 5668 | DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", |
7c59a9c1 | 5669 | intel_gpu_freq(dev_priv, dev_priv->rps.min_freq), |
2b6b3a09 D |
5670 | dev_priv->rps.min_freq); |
5671 | ||
1c14762d VS |
5672 | WARN_ONCE((dev_priv->rps.max_freq | |
5673 | dev_priv->rps.efficient_freq | | |
5674 | dev_priv->rps.rp1_freq | | |
5675 | dev_priv->rps.min_freq) & 1, | |
5676 | "Odd GPU freq values\n"); | |
5677 | ||
aed242ff CW |
5678 | dev_priv->rps.idle_freq = dev_priv->rps.min_freq; |
5679 | ||
2b6b3a09 D |
5680 | /* Preserve min/max settings in case of re-init */ |
5681 | if (dev_priv->rps.max_freq_softlimit == 0) | |
5682 | dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; | |
5683 | ||
5684 | if (dev_priv->rps.min_freq_softlimit == 0) | |
5685 | dev_priv->rps.min_freq_softlimit = dev_priv->rps.min_freq; | |
5686 | ||
5687 | mutex_unlock(&dev_priv->rps.hw_lock); | |
38807746 D |
5688 | } |
5689 | ||
dc97997a | 5690 | static void valleyview_cleanup_gt_powersave(struct drm_i915_private *dev_priv) |
4e80519e | 5691 | { |
dc97997a | 5692 | valleyview_cleanup_pctx(dev_priv); |
4e80519e ID |
5693 | } |
5694 | ||
dc97997a | 5695 | static void cherryview_enable_rps(struct drm_i915_private *dev_priv) |
38807746 | 5696 | { |
e2f80391 | 5697 | struct intel_engine_cs *engine; |
2b6b3a09 | 5698 | u32 gtfifodbg, val, rc6_mode = 0, pcbr; |
38807746 D |
5699 | |
5700 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
5701 | ||
297b32ec VS |
5702 | gtfifodbg = I915_READ(GTFIFODBG) & ~(GT_FIFO_SBDEDICATE_FREE_ENTRY_CHV | |
5703 | GT_FIFO_FREE_ENTRIES_CHV); | |
38807746 D |
5704 | if (gtfifodbg) { |
5705 | DRM_DEBUG_DRIVER("GT fifo had a previous error %x\n", | |
5706 | gtfifodbg); | |
5707 | I915_WRITE(GTFIFODBG, gtfifodbg); | |
5708 | } | |
5709 | ||
5710 | cherryview_check_pctx(dev_priv); | |
5711 | ||
5712 | /* 1a & 1b: Get forcewake during program sequence. Although the driver | |
5713 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 5714 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
38807746 | 5715 | |
160614a2 VS |
5716 | /* Disable RC states. */ |
5717 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
5718 | ||
38807746 D |
5719 | /* 2a: Program RC6 thresholds.*/ |
5720 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16); | |
5721 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ | |
5722 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
5723 | ||
b4ac5afc | 5724 | for_each_engine(engine, dev_priv) |
e2f80391 | 5725 | I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10); |
38807746 D |
5726 | I915_WRITE(GEN6_RC_SLEEP, 0); |
5727 | ||
f4f71c7d D |
5728 | /* TO threshold set to 500 us ( 0x186 * 1.28 us) */ |
5729 | I915_WRITE(GEN6_RC6_THRESHOLD, 0x186); | |
38807746 D |
5730 | |
5731 | /* allows RC6 residency counter to work */ | |
5732 | I915_WRITE(VLV_COUNTER_CONTROL, | |
5733 | _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH | | |
5734 | VLV_MEDIA_RC6_COUNT_EN | | |
5735 | VLV_RENDER_RC6_COUNT_EN)); | |
5736 | ||
5737 | /* For now we assume BIOS is allocating and populating the PCBR */ | |
5738 | pcbr = I915_READ(VLV_PCBR); | |
5739 | ||
38807746 | 5740 | /* 3: Enable RC6 */ |
dc97997a CW |
5741 | if ((intel_enable_rc6() & INTEL_RC6_ENABLE) && |
5742 | (pcbr >> VLV_PCBR_ADDR_SHIFT)) | |
af5a75a3 | 5743 | rc6_mode = GEN7_RC_CTL_TO_MODE; |
38807746 D |
5744 | |
5745 | I915_WRITE(GEN6_RC_CONTROL, rc6_mode); | |
5746 | ||
2b6b3a09 | 5747 | /* 4 Program defaults and thresholds for RPS*/ |
3cbdb48f | 5748 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000); |
2b6b3a09 D |
5749 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); |
5750 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); | |
5751 | I915_WRITE(GEN6_RP_UP_EI, 66000); | |
5752 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); | |
5753 | ||
5754 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
5755 | ||
5756 | /* 5: Enable RPS */ | |
5757 | I915_WRITE(GEN6_RP_CONTROL, | |
5758 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
eb973a5e | 5759 | GEN6_RP_MEDIA_IS_GFX | |
2b6b3a09 D |
5760 | GEN6_RP_ENABLE | |
5761 | GEN6_RP_UP_BUSY_AVG | | |
5762 | GEN6_RP_DOWN_IDLE_AVG); | |
5763 | ||
3ef62342 D |
5764 | /* Setting Fixed Bias */ |
5765 | val = VLV_OVERRIDE_EN | | |
5766 | VLV_SOC_TDP_EN | | |
5767 | CHV_BIAS_CPU_50_SOC_50; | |
5768 | vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val); | |
5769 | ||
2b6b3a09 D |
5770 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
5771 | ||
8d40c3ae VS |
5772 | /* RPS code assumes GPLL is used */ |
5773 | WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n"); | |
5774 | ||
742f491d | 5775 | DRM_DEBUG_DRIVER("GPLL enabled? %s\n", yesno(val & GPLLENABLE)); |
2b6b3a09 D |
5776 | DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val); |
5777 | ||
5778 | dev_priv->rps.cur_freq = (val >> 8) & 0xff; | |
5779 | DRM_DEBUG_DRIVER("current GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5780 | intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq), |
2b6b3a09 D |
5781 | dev_priv->rps.cur_freq); |
5782 | ||
5783 | DRM_DEBUG_DRIVER("setting GPU freq to %d MHz (%u)\n", | |
5fd9f523 VS |
5784 | intel_gpu_freq(dev_priv, dev_priv->rps.idle_freq), |
5785 | dev_priv->rps.idle_freq); | |
2b6b3a09 | 5786 | |
dc97997a | 5787 | valleyview_set_rps(dev_priv, dev_priv->rps.idle_freq); |
2b6b3a09 | 5788 | |
59bad947 | 5789 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
38807746 D |
5790 | } |
5791 | ||
dc97997a | 5792 | static void valleyview_enable_rps(struct drm_i915_private *dev_priv) |
0a073b84 | 5793 | { |
e2f80391 | 5794 | struct intel_engine_cs *engine; |
2a5913a8 | 5795 | u32 gtfifodbg, val, rc6_mode = 0; |
0a073b84 JB |
5796 | |
5797 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
5798 | ||
ae48434c ID |
5799 | valleyview_check_pctx(dev_priv); |
5800 | ||
297b32ec VS |
5801 | gtfifodbg = I915_READ(GTFIFODBG); |
5802 | if (gtfifodbg) { | |
f7d85c1e JB |
5803 | DRM_DEBUG_DRIVER("GT fifo had a previous error %x\n", |
5804 | gtfifodbg); | |
0a073b84 JB |
5805 | I915_WRITE(GTFIFODBG, gtfifodbg); |
5806 | } | |
5807 | ||
c8d9a590 | 5808 | /* If VLV, Forcewake all wells, else re-direct to regular path */ |
59bad947 | 5809 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
0a073b84 | 5810 | |
160614a2 VS |
5811 | /* Disable RC states. */ |
5812 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
5813 | ||
cad725fe | 5814 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000); |
0a073b84 JB |
5815 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); |
5816 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); | |
5817 | I915_WRITE(GEN6_RP_UP_EI, 66000); | |
5818 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); | |
5819 | ||
5820 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
5821 | ||
5822 | I915_WRITE(GEN6_RP_CONTROL, | |
5823 | GEN6_RP_MEDIA_TURBO | | |
5824 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
5825 | GEN6_RP_MEDIA_IS_GFX | | |
5826 | GEN6_RP_ENABLE | | |
5827 | GEN6_RP_UP_BUSY_AVG | | |
5828 | GEN6_RP_DOWN_IDLE_CONT); | |
5829 | ||
5830 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 0x00280000); | |
5831 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
5832 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
5833 | ||
b4ac5afc | 5834 | for_each_engine(engine, dev_priv) |
e2f80391 | 5835 | I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10); |
0a073b84 | 5836 | |
2f0aa304 | 5837 | I915_WRITE(GEN6_RC6_THRESHOLD, 0x557); |
0a073b84 JB |
5838 | |
5839 | /* allows RC6 residency counter to work */ | |
49798eb2 | 5840 | I915_WRITE(VLV_COUNTER_CONTROL, |
31685c25 D |
5841 | _MASKED_BIT_ENABLE(VLV_MEDIA_RC0_COUNT_EN | |
5842 | VLV_RENDER_RC0_COUNT_EN | | |
49798eb2 JB |
5843 | VLV_MEDIA_RC6_COUNT_EN | |
5844 | VLV_RENDER_RC6_COUNT_EN)); | |
31685c25 | 5845 | |
dc97997a | 5846 | if (intel_enable_rc6() & INTEL_RC6_ENABLE) |
6b88f295 | 5847 | rc6_mode = GEN7_RC_CTL_TO_MODE | VLV_RC_CTL_CTX_RST_PARALLEL; |
dc39fff7 | 5848 | |
dc97997a | 5849 | intel_print_rc6_info(dev_priv, rc6_mode); |
dc39fff7 | 5850 | |
a2b23fe0 | 5851 | I915_WRITE(GEN6_RC_CONTROL, rc6_mode); |
0a073b84 | 5852 | |
3ef62342 D |
5853 | /* Setting Fixed Bias */ |
5854 | val = VLV_OVERRIDE_EN | | |
5855 | VLV_SOC_TDP_EN | | |
5856 | VLV_BIAS_CPU_125_SOC_875; | |
5857 | vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val); | |
5858 | ||
64936258 | 5859 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
0a073b84 | 5860 | |
8d40c3ae VS |
5861 | /* RPS code assumes GPLL is used */ |
5862 | WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n"); | |
5863 | ||
742f491d | 5864 | DRM_DEBUG_DRIVER("GPLL enabled? %s\n", yesno(val & GPLLENABLE)); |
0a073b84 JB |
5865 | DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val); |
5866 | ||
b39fb297 | 5867 | dev_priv->rps.cur_freq = (val >> 8) & 0xff; |
73008b98 | 5868 | DRM_DEBUG_DRIVER("current GPU freq: %d MHz (%u)\n", |
7c59a9c1 | 5869 | intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq), |
b39fb297 | 5870 | dev_priv->rps.cur_freq); |
0a073b84 | 5871 | |
73008b98 | 5872 | DRM_DEBUG_DRIVER("setting GPU freq to %d MHz (%u)\n", |
5fd9f523 VS |
5873 | intel_gpu_freq(dev_priv, dev_priv->rps.idle_freq), |
5874 | dev_priv->rps.idle_freq); | |
0a073b84 | 5875 | |
dc97997a | 5876 | valleyview_set_rps(dev_priv, dev_priv->rps.idle_freq); |
0a073b84 | 5877 | |
59bad947 | 5878 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
0a073b84 JB |
5879 | } |
5880 | ||
dde18883 ED |
5881 | static unsigned long intel_pxfreq(u32 vidfreq) |
5882 | { | |
5883 | unsigned long freq; | |
5884 | int div = (vidfreq & 0x3f0000) >> 16; | |
5885 | int post = (vidfreq & 0x3000) >> 12; | |
5886 | int pre = (vidfreq & 0x7); | |
5887 | ||
5888 | if (!pre) | |
5889 | return 0; | |
5890 | ||
5891 | freq = ((div * 133333) / ((1<<post) * pre)); | |
5892 | ||
5893 | return freq; | |
5894 | } | |
5895 | ||
eb48eb00 DV |
5896 | static const struct cparams { |
5897 | u16 i; | |
5898 | u16 t; | |
5899 | u16 m; | |
5900 | u16 c; | |
5901 | } cparams[] = { | |
5902 | { 1, 1333, 301, 28664 }, | |
5903 | { 1, 1066, 294, 24460 }, | |
5904 | { 1, 800, 294, 25192 }, | |
5905 | { 0, 1333, 276, 27605 }, | |
5906 | { 0, 1066, 276, 27605 }, | |
5907 | { 0, 800, 231, 23784 }, | |
5908 | }; | |
5909 | ||
f531dcb2 | 5910 | static unsigned long __i915_chipset_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
5911 | { |
5912 | u64 total_count, diff, ret; | |
5913 | u32 count1, count2, count3, m = 0, c = 0; | |
5914 | unsigned long now = jiffies_to_msecs(jiffies), diff1; | |
5915 | int i; | |
5916 | ||
02d71956 DV |
5917 | assert_spin_locked(&mchdev_lock); |
5918 | ||
20e4d407 | 5919 | diff1 = now - dev_priv->ips.last_time1; |
eb48eb00 DV |
5920 | |
5921 | /* Prevent division-by-zero if we are asking too fast. | |
5922 | * Also, we don't get interesting results if we are polling | |
5923 | * faster than once in 10ms, so just return the saved value | |
5924 | * in such cases. | |
5925 | */ | |
5926 | if (diff1 <= 10) | |
20e4d407 | 5927 | return dev_priv->ips.chipset_power; |
eb48eb00 DV |
5928 | |
5929 | count1 = I915_READ(DMIEC); | |
5930 | count2 = I915_READ(DDREC); | |
5931 | count3 = I915_READ(CSIEC); | |
5932 | ||
5933 | total_count = count1 + count2 + count3; | |
5934 | ||
5935 | /* FIXME: handle per-counter overflow */ | |
20e4d407 DV |
5936 | if (total_count < dev_priv->ips.last_count1) { |
5937 | diff = ~0UL - dev_priv->ips.last_count1; | |
eb48eb00 DV |
5938 | diff += total_count; |
5939 | } else { | |
20e4d407 | 5940 | diff = total_count - dev_priv->ips.last_count1; |
eb48eb00 DV |
5941 | } |
5942 | ||
5943 | for (i = 0; i < ARRAY_SIZE(cparams); i++) { | |
20e4d407 DV |
5944 | if (cparams[i].i == dev_priv->ips.c_m && |
5945 | cparams[i].t == dev_priv->ips.r_t) { | |
eb48eb00 DV |
5946 | m = cparams[i].m; |
5947 | c = cparams[i].c; | |
5948 | break; | |
5949 | } | |
5950 | } | |
5951 | ||
5952 | diff = div_u64(diff, diff1); | |
5953 | ret = ((m * diff) + c); | |
5954 | ret = div_u64(ret, 10); | |
5955 | ||
20e4d407 DV |
5956 | dev_priv->ips.last_count1 = total_count; |
5957 | dev_priv->ips.last_time1 = now; | |
eb48eb00 | 5958 | |
20e4d407 | 5959 | dev_priv->ips.chipset_power = ret; |
eb48eb00 DV |
5960 | |
5961 | return ret; | |
5962 | } | |
5963 | ||
f531dcb2 CW |
5964 | unsigned long i915_chipset_val(struct drm_i915_private *dev_priv) |
5965 | { | |
5966 | unsigned long val; | |
5967 | ||
dc97997a | 5968 | if (INTEL_INFO(dev_priv)->gen != 5) |
f531dcb2 CW |
5969 | return 0; |
5970 | ||
5971 | spin_lock_irq(&mchdev_lock); | |
5972 | ||
5973 | val = __i915_chipset_val(dev_priv); | |
5974 | ||
5975 | spin_unlock_irq(&mchdev_lock); | |
5976 | ||
5977 | return val; | |
5978 | } | |
5979 | ||
eb48eb00 DV |
5980 | unsigned long i915_mch_val(struct drm_i915_private *dev_priv) |
5981 | { | |
5982 | unsigned long m, x, b; | |
5983 | u32 tsfs; | |
5984 | ||
5985 | tsfs = I915_READ(TSFS); | |
5986 | ||
5987 | m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT); | |
5988 | x = I915_READ8(TR1); | |
5989 | ||
5990 | b = tsfs & TSFS_INTR_MASK; | |
5991 | ||
5992 | return ((m * x) / 127) - b; | |
5993 | } | |
5994 | ||
d972d6ee MK |
5995 | static int _pxvid_to_vd(u8 pxvid) |
5996 | { | |
5997 | if (pxvid == 0) | |
5998 | return 0; | |
5999 | ||
6000 | if (pxvid >= 8 && pxvid < 31) | |
6001 | pxvid = 31; | |
6002 | ||
6003 | return (pxvid + 2) * 125; | |
6004 | } | |
6005 | ||
6006 | static u32 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid) | |
eb48eb00 | 6007 | { |
d972d6ee MK |
6008 | const int vd = _pxvid_to_vd(pxvid); |
6009 | const int vm = vd - 1125; | |
6010 | ||
dc97997a | 6011 | if (INTEL_INFO(dev_priv)->is_mobile) |
d972d6ee MK |
6012 | return vm > 0 ? vm : 0; |
6013 | ||
6014 | return vd; | |
eb48eb00 DV |
6015 | } |
6016 | ||
02d71956 | 6017 | static void __i915_update_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 | 6018 | { |
5ed0bdf2 | 6019 | u64 now, diff, diffms; |
eb48eb00 DV |
6020 | u32 count; |
6021 | ||
02d71956 | 6022 | assert_spin_locked(&mchdev_lock); |
eb48eb00 | 6023 | |
5ed0bdf2 TG |
6024 | now = ktime_get_raw_ns(); |
6025 | diffms = now - dev_priv->ips.last_time2; | |
6026 | do_div(diffms, NSEC_PER_MSEC); | |
eb48eb00 DV |
6027 | |
6028 | /* Don't divide by 0 */ | |
eb48eb00 DV |
6029 | if (!diffms) |
6030 | return; | |
6031 | ||
6032 | count = I915_READ(GFXEC); | |
6033 | ||
20e4d407 DV |
6034 | if (count < dev_priv->ips.last_count2) { |
6035 | diff = ~0UL - dev_priv->ips.last_count2; | |
eb48eb00 DV |
6036 | diff += count; |
6037 | } else { | |
20e4d407 | 6038 | diff = count - dev_priv->ips.last_count2; |
eb48eb00 DV |
6039 | } |
6040 | ||
20e4d407 DV |
6041 | dev_priv->ips.last_count2 = count; |
6042 | dev_priv->ips.last_time2 = now; | |
eb48eb00 DV |
6043 | |
6044 | /* More magic constants... */ | |
6045 | diff = diff * 1181; | |
6046 | diff = div_u64(diff, diffms * 10); | |
20e4d407 | 6047 | dev_priv->ips.gfx_power = diff; |
eb48eb00 DV |
6048 | } |
6049 | ||
02d71956 DV |
6050 | void i915_update_gfx_val(struct drm_i915_private *dev_priv) |
6051 | { | |
dc97997a | 6052 | if (INTEL_INFO(dev_priv)->gen != 5) |
02d71956 DV |
6053 | return; |
6054 | ||
9270388e | 6055 | spin_lock_irq(&mchdev_lock); |
02d71956 DV |
6056 | |
6057 | __i915_update_gfx_val(dev_priv); | |
6058 | ||
9270388e | 6059 | spin_unlock_irq(&mchdev_lock); |
02d71956 DV |
6060 | } |
6061 | ||
f531dcb2 | 6062 | static unsigned long __i915_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
6063 | { |
6064 | unsigned long t, corr, state1, corr2, state2; | |
6065 | u32 pxvid, ext_v; | |
6066 | ||
02d71956 DV |
6067 | assert_spin_locked(&mchdev_lock); |
6068 | ||
616847e7 | 6069 | pxvid = I915_READ(PXVFREQ(dev_priv->rps.cur_freq)); |
eb48eb00 DV |
6070 | pxvid = (pxvid >> 24) & 0x7f; |
6071 | ext_v = pvid_to_extvid(dev_priv, pxvid); | |
6072 | ||
6073 | state1 = ext_v; | |
6074 | ||
6075 | t = i915_mch_val(dev_priv); | |
6076 | ||
6077 | /* Revel in the empirically derived constants */ | |
6078 | ||
6079 | /* Correction factor in 1/100000 units */ | |
6080 | if (t > 80) | |
6081 | corr = ((t * 2349) + 135940); | |
6082 | else if (t >= 50) | |
6083 | corr = ((t * 964) + 29317); | |
6084 | else /* < 50 */ | |
6085 | corr = ((t * 301) + 1004); | |
6086 | ||
6087 | corr = corr * ((150142 * state1) / 10000 - 78642); | |
6088 | corr /= 100000; | |
20e4d407 | 6089 | corr2 = (corr * dev_priv->ips.corr); |
eb48eb00 DV |
6090 | |
6091 | state2 = (corr2 * state1) / 10000; | |
6092 | state2 /= 100; /* convert to mW */ | |
6093 | ||
02d71956 | 6094 | __i915_update_gfx_val(dev_priv); |
eb48eb00 | 6095 | |
20e4d407 | 6096 | return dev_priv->ips.gfx_power + state2; |
eb48eb00 DV |
6097 | } |
6098 | ||
f531dcb2 CW |
6099 | unsigned long i915_gfx_val(struct drm_i915_private *dev_priv) |
6100 | { | |
6101 | unsigned long val; | |
6102 | ||
dc97997a | 6103 | if (INTEL_INFO(dev_priv)->gen != 5) |
f531dcb2 CW |
6104 | return 0; |
6105 | ||
6106 | spin_lock_irq(&mchdev_lock); | |
6107 | ||
6108 | val = __i915_gfx_val(dev_priv); | |
6109 | ||
6110 | spin_unlock_irq(&mchdev_lock); | |
6111 | ||
6112 | return val; | |
6113 | } | |
6114 | ||
eb48eb00 DV |
6115 | /** |
6116 | * i915_read_mch_val - return value for IPS use | |
6117 | * | |
6118 | * Calculate and return a value for the IPS driver to use when deciding whether | |
6119 | * we have thermal and power headroom to increase CPU or GPU power budget. | |
6120 | */ | |
6121 | unsigned long i915_read_mch_val(void) | |
6122 | { | |
6123 | struct drm_i915_private *dev_priv; | |
6124 | unsigned long chipset_val, graphics_val, ret = 0; | |
6125 | ||
9270388e | 6126 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
6127 | if (!i915_mch_dev) |
6128 | goto out_unlock; | |
6129 | dev_priv = i915_mch_dev; | |
6130 | ||
f531dcb2 CW |
6131 | chipset_val = __i915_chipset_val(dev_priv); |
6132 | graphics_val = __i915_gfx_val(dev_priv); | |
eb48eb00 DV |
6133 | |
6134 | ret = chipset_val + graphics_val; | |
6135 | ||
6136 | out_unlock: | |
9270388e | 6137 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6138 | |
6139 | return ret; | |
6140 | } | |
6141 | EXPORT_SYMBOL_GPL(i915_read_mch_val); | |
6142 | ||
6143 | /** | |
6144 | * i915_gpu_raise - raise GPU frequency limit | |
6145 | * | |
6146 | * Raise the limit; IPS indicates we have thermal headroom. | |
6147 | */ | |
6148 | bool i915_gpu_raise(void) | |
6149 | { | |
6150 | struct drm_i915_private *dev_priv; | |
6151 | bool ret = true; | |
6152 | ||
9270388e | 6153 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
6154 | if (!i915_mch_dev) { |
6155 | ret = false; | |
6156 | goto out_unlock; | |
6157 | } | |
6158 | dev_priv = i915_mch_dev; | |
6159 | ||
20e4d407 DV |
6160 | if (dev_priv->ips.max_delay > dev_priv->ips.fmax) |
6161 | dev_priv->ips.max_delay--; | |
eb48eb00 DV |
6162 | |
6163 | out_unlock: | |
9270388e | 6164 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6165 | |
6166 | return ret; | |
6167 | } | |
6168 | EXPORT_SYMBOL_GPL(i915_gpu_raise); | |
6169 | ||
6170 | /** | |
6171 | * i915_gpu_lower - lower GPU frequency limit | |
6172 | * | |
6173 | * IPS indicates we're close to a thermal limit, so throttle back the GPU | |
6174 | * frequency maximum. | |
6175 | */ | |
6176 | bool i915_gpu_lower(void) | |
6177 | { | |
6178 | struct drm_i915_private *dev_priv; | |
6179 | bool ret = true; | |
6180 | ||
9270388e | 6181 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
6182 | if (!i915_mch_dev) { |
6183 | ret = false; | |
6184 | goto out_unlock; | |
6185 | } | |
6186 | dev_priv = i915_mch_dev; | |
6187 | ||
20e4d407 DV |
6188 | if (dev_priv->ips.max_delay < dev_priv->ips.min_delay) |
6189 | dev_priv->ips.max_delay++; | |
eb48eb00 DV |
6190 | |
6191 | out_unlock: | |
9270388e | 6192 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6193 | |
6194 | return ret; | |
6195 | } | |
6196 | EXPORT_SYMBOL_GPL(i915_gpu_lower); | |
6197 | ||
6198 | /** | |
6199 | * i915_gpu_busy - indicate GPU business to IPS | |
6200 | * | |
6201 | * Tell the IPS driver whether or not the GPU is busy. | |
6202 | */ | |
6203 | bool i915_gpu_busy(void) | |
6204 | { | |
6205 | struct drm_i915_private *dev_priv; | |
e2f80391 | 6206 | struct intel_engine_cs *engine; |
eb48eb00 DV |
6207 | bool ret = false; |
6208 | ||
9270388e | 6209 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
6210 | if (!i915_mch_dev) |
6211 | goto out_unlock; | |
6212 | dev_priv = i915_mch_dev; | |
6213 | ||
b4ac5afc | 6214 | for_each_engine(engine, dev_priv) |
e2f80391 | 6215 | ret |= !list_empty(&engine->request_list); |
eb48eb00 DV |
6216 | |
6217 | out_unlock: | |
9270388e | 6218 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6219 | |
6220 | return ret; | |
6221 | } | |
6222 | EXPORT_SYMBOL_GPL(i915_gpu_busy); | |
6223 | ||
6224 | /** | |
6225 | * i915_gpu_turbo_disable - disable graphics turbo | |
6226 | * | |
6227 | * Disable graphics turbo by resetting the max frequency and setting the | |
6228 | * current frequency to the default. | |
6229 | */ | |
6230 | bool i915_gpu_turbo_disable(void) | |
6231 | { | |
6232 | struct drm_i915_private *dev_priv; | |
6233 | bool ret = true; | |
6234 | ||
9270388e | 6235 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
6236 | if (!i915_mch_dev) { |
6237 | ret = false; | |
6238 | goto out_unlock; | |
6239 | } | |
6240 | dev_priv = i915_mch_dev; | |
6241 | ||
20e4d407 | 6242 | dev_priv->ips.max_delay = dev_priv->ips.fstart; |
eb48eb00 | 6243 | |
91d14251 | 6244 | if (!ironlake_set_drps(dev_priv, dev_priv->ips.fstart)) |
eb48eb00 DV |
6245 | ret = false; |
6246 | ||
6247 | out_unlock: | |
9270388e | 6248 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6249 | |
6250 | return ret; | |
6251 | } | |
6252 | EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable); | |
6253 | ||
6254 | /** | |
6255 | * Tells the intel_ips driver that the i915 driver is now loaded, if | |
6256 | * IPS got loaded first. | |
6257 | * | |
6258 | * This awkward dance is so that neither module has to depend on the | |
6259 | * other in order for IPS to do the appropriate communication of | |
6260 | * GPU turbo limits to i915. | |
6261 | */ | |
6262 | static void | |
6263 | ips_ping_for_i915_load(void) | |
6264 | { | |
6265 | void (*link)(void); | |
6266 | ||
6267 | link = symbol_get(ips_link_to_i915_driver); | |
6268 | if (link) { | |
6269 | link(); | |
6270 | symbol_put(ips_link_to_i915_driver); | |
6271 | } | |
6272 | } | |
6273 | ||
6274 | void intel_gpu_ips_init(struct drm_i915_private *dev_priv) | |
6275 | { | |
02d71956 DV |
6276 | /* We only register the i915 ips part with intel-ips once everything is |
6277 | * set up, to avoid intel-ips sneaking in and reading bogus values. */ | |
9270388e | 6278 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 6279 | i915_mch_dev = dev_priv; |
9270388e | 6280 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6281 | |
6282 | ips_ping_for_i915_load(); | |
6283 | } | |
6284 | ||
6285 | void intel_gpu_ips_teardown(void) | |
6286 | { | |
9270388e | 6287 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 6288 | i915_mch_dev = NULL; |
9270388e | 6289 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 | 6290 | } |
76c3552f | 6291 | |
dc97997a | 6292 | static void intel_init_emon(struct drm_i915_private *dev_priv) |
dde18883 | 6293 | { |
dde18883 ED |
6294 | u32 lcfuse; |
6295 | u8 pxw[16]; | |
6296 | int i; | |
6297 | ||
6298 | /* Disable to program */ | |
6299 | I915_WRITE(ECR, 0); | |
6300 | POSTING_READ(ECR); | |
6301 | ||
6302 | /* Program energy weights for various events */ | |
6303 | I915_WRITE(SDEW, 0x15040d00); | |
6304 | I915_WRITE(CSIEW0, 0x007f0000); | |
6305 | I915_WRITE(CSIEW1, 0x1e220004); | |
6306 | I915_WRITE(CSIEW2, 0x04000004); | |
6307 | ||
6308 | for (i = 0; i < 5; i++) | |
616847e7 | 6309 | I915_WRITE(PEW(i), 0); |
dde18883 | 6310 | for (i = 0; i < 3; i++) |
616847e7 | 6311 | I915_WRITE(DEW(i), 0); |
dde18883 ED |
6312 | |
6313 | /* Program P-state weights to account for frequency power adjustment */ | |
6314 | for (i = 0; i < 16; i++) { | |
616847e7 | 6315 | u32 pxvidfreq = I915_READ(PXVFREQ(i)); |
dde18883 ED |
6316 | unsigned long freq = intel_pxfreq(pxvidfreq); |
6317 | unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >> | |
6318 | PXVFREQ_PX_SHIFT; | |
6319 | unsigned long val; | |
6320 | ||
6321 | val = vid * vid; | |
6322 | val *= (freq / 1000); | |
6323 | val *= 255; | |
6324 | val /= (127*127*900); | |
6325 | if (val > 0xff) | |
6326 | DRM_ERROR("bad pxval: %ld\n", val); | |
6327 | pxw[i] = val; | |
6328 | } | |
6329 | /* Render standby states get 0 weight */ | |
6330 | pxw[14] = 0; | |
6331 | pxw[15] = 0; | |
6332 | ||
6333 | for (i = 0; i < 4; i++) { | |
6334 | u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) | | |
6335 | (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]); | |
616847e7 | 6336 | I915_WRITE(PXW(i), val); |
dde18883 ED |
6337 | } |
6338 | ||
6339 | /* Adjust magic regs to magic values (more experimental results) */ | |
6340 | I915_WRITE(OGW0, 0); | |
6341 | I915_WRITE(OGW1, 0); | |
6342 | I915_WRITE(EG0, 0x00007f00); | |
6343 | I915_WRITE(EG1, 0x0000000e); | |
6344 | I915_WRITE(EG2, 0x000e0000); | |
6345 | I915_WRITE(EG3, 0x68000300); | |
6346 | I915_WRITE(EG4, 0x42000000); | |
6347 | I915_WRITE(EG5, 0x00140031); | |
6348 | I915_WRITE(EG6, 0); | |
6349 | I915_WRITE(EG7, 0); | |
6350 | ||
6351 | for (i = 0; i < 8; i++) | |
616847e7 | 6352 | I915_WRITE(PXWL(i), 0); |
dde18883 ED |
6353 | |
6354 | /* Enable PMON + select events */ | |
6355 | I915_WRITE(ECR, 0x80000019); | |
6356 | ||
6357 | lcfuse = I915_READ(LCFUSE02); | |
6358 | ||
20e4d407 | 6359 | dev_priv->ips.corr = (lcfuse & LCFUSE_HIV_MASK); |
dde18883 ED |
6360 | } |
6361 | ||
dc97997a | 6362 | void intel_init_gt_powersave(struct drm_i915_private *dev_priv) |
ae48434c | 6363 | { |
b268c699 ID |
6364 | /* |
6365 | * RPM depends on RC6 to save restore the GT HW context, so make RC6 a | |
6366 | * requirement. | |
6367 | */ | |
6368 | if (!i915.enable_rc6) { | |
6369 | DRM_INFO("RC6 disabled, disabling runtime PM support\n"); | |
6370 | intel_runtime_pm_get(dev_priv); | |
6371 | } | |
e6069ca8 | 6372 | |
dc97997a CW |
6373 | if (IS_CHERRYVIEW(dev_priv)) |
6374 | cherryview_init_gt_powersave(dev_priv); | |
6375 | else if (IS_VALLEYVIEW(dev_priv)) | |
6376 | valleyview_init_gt_powersave(dev_priv); | |
ae48434c ID |
6377 | } |
6378 | ||
dc97997a | 6379 | void intel_cleanup_gt_powersave(struct drm_i915_private *dev_priv) |
ae48434c | 6380 | { |
dc97997a | 6381 | if (IS_CHERRYVIEW(dev_priv)) |
38807746 | 6382 | return; |
dc97997a CW |
6383 | else if (IS_VALLEYVIEW(dev_priv)) |
6384 | valleyview_cleanup_gt_powersave(dev_priv); | |
b268c699 ID |
6385 | |
6386 | if (!i915.enable_rc6) | |
6387 | intel_runtime_pm_put(dev_priv); | |
ae48434c ID |
6388 | } |
6389 | ||
91d14251 | 6390 | static void gen6_suspend_rps(struct drm_i915_private *dev_priv) |
dbea3cea | 6391 | { |
dbea3cea ID |
6392 | flush_delayed_work(&dev_priv->rps.delayed_resume_work); |
6393 | ||
91d14251 | 6394 | gen6_disable_rps_interrupts(dev_priv); |
dbea3cea ID |
6395 | } |
6396 | ||
156c7ca0 JB |
6397 | /** |
6398 | * intel_suspend_gt_powersave - suspend PM work and helper threads | |
dc97997a | 6399 | * @dev_priv: i915 device |
156c7ca0 JB |
6400 | * |
6401 | * We don't want to disable RC6 or other features here, we just want | |
6402 | * to make sure any work we've queued has finished and won't bother | |
6403 | * us while we're suspended. | |
6404 | */ | |
dc97997a | 6405 | void intel_suspend_gt_powersave(struct drm_i915_private *dev_priv) |
156c7ca0 | 6406 | { |
91d14251 | 6407 | if (INTEL_GEN(dev_priv) < 6) |
d4d70aa5 ID |
6408 | return; |
6409 | ||
91d14251 | 6410 | gen6_suspend_rps(dev_priv); |
b47adc17 D |
6411 | |
6412 | /* Force GPU to min freq during suspend */ | |
6413 | gen6_rps_idle(dev_priv); | |
156c7ca0 JB |
6414 | } |
6415 | ||
dc97997a | 6416 | void intel_disable_gt_powersave(struct drm_i915_private *dev_priv) |
8090c6b9 | 6417 | { |
dc97997a | 6418 | if (IS_IRONLAKE_M(dev_priv)) { |
91d14251 | 6419 | ironlake_disable_drps(dev_priv); |
dc97997a CW |
6420 | } else if (INTEL_INFO(dev_priv)->gen >= 6) { |
6421 | intel_suspend_gt_powersave(dev_priv); | |
e494837a | 6422 | |
4fc688ce | 6423 | mutex_lock(&dev_priv->rps.hw_lock); |
dc97997a CW |
6424 | if (INTEL_INFO(dev_priv)->gen >= 9) { |
6425 | gen9_disable_rc6(dev_priv); | |
6426 | gen9_disable_rps(dev_priv); | |
6427 | } else if (IS_CHERRYVIEW(dev_priv)) | |
6428 | cherryview_disable_rps(dev_priv); | |
6429 | else if (IS_VALLEYVIEW(dev_priv)) | |
6430 | valleyview_disable_rps(dev_priv); | |
d20d4f0c | 6431 | else |
dc97997a | 6432 | gen6_disable_rps(dev_priv); |
e534770a | 6433 | |
c0951f0c | 6434 | dev_priv->rps.enabled = false; |
4fc688ce | 6435 | mutex_unlock(&dev_priv->rps.hw_lock); |
930ebb46 | 6436 | } |
8090c6b9 DV |
6437 | } |
6438 | ||
1a01ab3b JB |
6439 | static void intel_gen6_powersave_work(struct work_struct *work) |
6440 | { | |
6441 | struct drm_i915_private *dev_priv = | |
6442 | container_of(work, struct drm_i915_private, | |
6443 | rps.delayed_resume_work.work); | |
1a01ab3b | 6444 | |
4fc688ce | 6445 | mutex_lock(&dev_priv->rps.hw_lock); |
0a073b84 | 6446 | |
dc97997a CW |
6447 | gen6_reset_rps_interrupts(dev_priv); |
6448 | ||
6449 | if (IS_CHERRYVIEW(dev_priv)) { | |
6450 | cherryview_enable_rps(dev_priv); | |
6451 | } else if (IS_VALLEYVIEW(dev_priv)) { | |
6452 | valleyview_enable_rps(dev_priv); | |
6453 | } else if (INTEL_INFO(dev_priv)->gen >= 9) { | |
6454 | gen9_enable_rc6(dev_priv); | |
6455 | gen9_enable_rps(dev_priv); | |
6456 | if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) | |
6457 | __gen6_update_ring_freq(dev_priv); | |
6458 | } else if (IS_BROADWELL(dev_priv)) { | |
6459 | gen8_enable_rps(dev_priv); | |
6460 | __gen6_update_ring_freq(dev_priv); | |
0a073b84 | 6461 | } else { |
dc97997a CW |
6462 | gen6_enable_rps(dev_priv); |
6463 | __gen6_update_ring_freq(dev_priv); | |
0a073b84 | 6464 | } |
aed242ff CW |
6465 | |
6466 | WARN_ON(dev_priv->rps.max_freq < dev_priv->rps.min_freq); | |
6467 | WARN_ON(dev_priv->rps.idle_freq > dev_priv->rps.max_freq); | |
6468 | ||
6469 | WARN_ON(dev_priv->rps.efficient_freq < dev_priv->rps.min_freq); | |
6470 | WARN_ON(dev_priv->rps.efficient_freq > dev_priv->rps.max_freq); | |
6471 | ||
c0951f0c | 6472 | dev_priv->rps.enabled = true; |
3cc134e3 | 6473 | |
91d14251 | 6474 | gen6_enable_rps_interrupts(dev_priv); |
3cc134e3 | 6475 | |
4fc688ce | 6476 | mutex_unlock(&dev_priv->rps.hw_lock); |
c6df39b5 ID |
6477 | |
6478 | intel_runtime_pm_put(dev_priv); | |
1a01ab3b JB |
6479 | } |
6480 | ||
dc97997a | 6481 | void intel_enable_gt_powersave(struct drm_i915_private *dev_priv) |
8090c6b9 | 6482 | { |
f61018b1 | 6483 | /* Powersaving is controlled by the host when inside a VM */ |
c033666a | 6484 | if (intel_vgpu_active(dev_priv)) |
f61018b1 YZ |
6485 | return; |
6486 | ||
dc97997a | 6487 | if (IS_IRONLAKE_M(dev_priv)) { |
91d14251 | 6488 | ironlake_enable_drps(dev_priv); |
dc97997a CW |
6489 | mutex_lock(&dev_priv->dev->struct_mutex); |
6490 | intel_init_emon(dev_priv); | |
6491 | mutex_unlock(&dev_priv->dev->struct_mutex); | |
6492 | } else if (INTEL_INFO(dev_priv)->gen >= 6) { | |
1a01ab3b JB |
6493 | /* |
6494 | * PCU communication is slow and this doesn't need to be | |
6495 | * done at any specific time, so do this out of our fast path | |
6496 | * to make resume and init faster. | |
c6df39b5 ID |
6497 | * |
6498 | * We depend on the HW RC6 power context save/restore | |
6499 | * mechanism when entering D3 through runtime PM suspend. So | |
6500 | * disable RPM until RPS/RC6 is properly setup. We can only | |
6501 | * get here via the driver load/system resume/runtime resume | |
6502 | * paths, so the _noresume version is enough (and in case of | |
6503 | * runtime resume it's necessary). | |
1a01ab3b | 6504 | */ |
c6df39b5 ID |
6505 | if (schedule_delayed_work(&dev_priv->rps.delayed_resume_work, |
6506 | round_jiffies_up_relative(HZ))) | |
6507 | intel_runtime_pm_get_noresume(dev_priv); | |
8090c6b9 DV |
6508 | } |
6509 | } | |
6510 | ||
dc97997a | 6511 | void intel_reset_gt_powersave(struct drm_i915_private *dev_priv) |
c6df39b5 | 6512 | { |
dc97997a | 6513 | if (INTEL_INFO(dev_priv)->gen < 6) |
dbea3cea ID |
6514 | return; |
6515 | ||
91d14251 | 6516 | gen6_suspend_rps(dev_priv); |
c6df39b5 | 6517 | dev_priv->rps.enabled = false; |
c6df39b5 ID |
6518 | } |
6519 | ||
3107bd48 DV |
6520 | static void ibx_init_clock_gating(struct drm_device *dev) |
6521 | { | |
6522 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6523 | ||
6524 | /* | |
6525 | * On Ibex Peak and Cougar Point, we need to disable clock | |
6526 | * gating for the panel power sequencer or it will fail to | |
6527 | * start up when no ports are active. | |
6528 | */ | |
6529 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); | |
6530 | } | |
6531 | ||
0e088b8f VS |
6532 | static void g4x_disable_trickle_feed(struct drm_device *dev) |
6533 | { | |
6534 | struct drm_i915_private *dev_priv = dev->dev_private; | |
b12ce1d8 | 6535 | enum pipe pipe; |
0e088b8f | 6536 | |
055e393f | 6537 | for_each_pipe(dev_priv, pipe) { |
0e088b8f VS |
6538 | I915_WRITE(DSPCNTR(pipe), |
6539 | I915_READ(DSPCNTR(pipe)) | | |
6540 | DISPPLANE_TRICKLE_FEED_DISABLE); | |
b12ce1d8 VS |
6541 | |
6542 | I915_WRITE(DSPSURF(pipe), I915_READ(DSPSURF(pipe))); | |
6543 | POSTING_READ(DSPSURF(pipe)); | |
0e088b8f VS |
6544 | } |
6545 | } | |
6546 | ||
017636cc VS |
6547 | static void ilk_init_lp_watermarks(struct drm_device *dev) |
6548 | { | |
6549 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6550 | ||
6551 | I915_WRITE(WM3_LP_ILK, I915_READ(WM3_LP_ILK) & ~WM1_LP_SR_EN); | |
6552 | I915_WRITE(WM2_LP_ILK, I915_READ(WM2_LP_ILK) & ~WM1_LP_SR_EN); | |
6553 | I915_WRITE(WM1_LP_ILK, I915_READ(WM1_LP_ILK) & ~WM1_LP_SR_EN); | |
6554 | ||
6555 | /* | |
6556 | * Don't touch WM1S_LP_EN here. | |
6557 | * Doing so could cause underruns. | |
6558 | */ | |
6559 | } | |
6560 | ||
1fa61106 | 6561 | static void ironlake_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6562 | { |
6563 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231e54f6 | 6564 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 6565 | |
f1e8fa56 DL |
6566 | /* |
6567 | * Required for FBC | |
6568 | * WaFbcDisableDpfcClockGating:ilk | |
6569 | */ | |
4d47e4f5 DL |
6570 | dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE | |
6571 | ILK_DPFCUNIT_CLOCK_GATE_DISABLE | | |
6572 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE; | |
6f1d69b0 ED |
6573 | |
6574 | I915_WRITE(PCH_3DCGDIS0, | |
6575 | MARIUNIT_CLOCK_GATE_DISABLE | | |
6576 | SVSMUNIT_CLOCK_GATE_DISABLE); | |
6577 | I915_WRITE(PCH_3DCGDIS1, | |
6578 | VFMUNIT_CLOCK_GATE_DISABLE); | |
6579 | ||
6f1d69b0 ED |
6580 | /* |
6581 | * According to the spec the following bits should be set in | |
6582 | * order to enable memory self-refresh | |
6583 | * The bit 22/21 of 0x42004 | |
6584 | * The bit 5 of 0x42020 | |
6585 | * The bit 15 of 0x45000 | |
6586 | */ | |
6587 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
6588 | (I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6589 | ILK_DPARB_GATE | ILK_VSDPFD_FULL)); | |
4d47e4f5 | 6590 | dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE; |
6f1d69b0 ED |
6591 | I915_WRITE(DISP_ARB_CTL, |
6592 | (I915_READ(DISP_ARB_CTL) | | |
6593 | DISP_FBC_WM_DIS)); | |
017636cc VS |
6594 | |
6595 | ilk_init_lp_watermarks(dev); | |
6f1d69b0 ED |
6596 | |
6597 | /* | |
6598 | * Based on the document from hardware guys the following bits | |
6599 | * should be set unconditionally in order to enable FBC. | |
6600 | * The bit 22 of 0x42000 | |
6601 | * The bit 22 of 0x42004 | |
6602 | * The bit 7,8,9 of 0x42020. | |
6603 | */ | |
6604 | if (IS_IRONLAKE_M(dev)) { | |
4bb35334 | 6605 | /* WaFbcAsynchFlipDisableFbcQueue:ilk */ |
6f1d69b0 ED |
6606 | I915_WRITE(ILK_DISPLAY_CHICKEN1, |
6607 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
6608 | ILK_FBCQ_DIS); | |
6609 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
6610 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6611 | ILK_DPARB_GATE); | |
6f1d69b0 ED |
6612 | } |
6613 | ||
4d47e4f5 DL |
6614 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
6615 | ||
6f1d69b0 ED |
6616 | I915_WRITE(ILK_DISPLAY_CHICKEN2, |
6617 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6618 | ILK_ELPIN_409_SELECT); | |
6619 | I915_WRITE(_3D_CHICKEN2, | |
6620 | _3D_CHICKEN2_WM_READ_PIPELINED << 16 | | |
6621 | _3D_CHICKEN2_WM_READ_PIPELINED); | |
4358a374 | 6622 | |
ecdb4eb7 | 6623 | /* WaDisableRenderCachePipelinedFlush:ilk */ |
4358a374 DV |
6624 | I915_WRITE(CACHE_MODE_0, |
6625 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
3107bd48 | 6626 | |
4e04632e AG |
6627 | /* WaDisable_RenderCache_OperationalFlush:ilk */ |
6628 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6629 | ||
0e088b8f | 6630 | g4x_disable_trickle_feed(dev); |
bdad2b2f | 6631 | |
3107bd48 DV |
6632 | ibx_init_clock_gating(dev); |
6633 | } | |
6634 | ||
6635 | static void cpt_init_clock_gating(struct drm_device *dev) | |
6636 | { | |
6637 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6638 | int pipe; | |
3f704fa2 | 6639 | uint32_t val; |
3107bd48 DV |
6640 | |
6641 | /* | |
6642 | * On Ibex Peak and Cougar Point, we need to disable clock | |
6643 | * gating for the panel power sequencer or it will fail to | |
6644 | * start up when no ports are active. | |
6645 | */ | |
cd664078 JB |
6646 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE | |
6647 | PCH_DPLUNIT_CLOCK_GATE_DISABLE | | |
6648 | PCH_CPUNIT_CLOCK_GATE_DISABLE); | |
3107bd48 DV |
6649 | I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) | |
6650 | DPLS_EDP_PPS_FIX_DIS); | |
335c07b7 TI |
6651 | /* The below fixes the weird display corruption, a few pixels shifted |
6652 | * downward, on (only) LVDS of some HP laptops with IVY. | |
6653 | */ | |
055e393f | 6654 | for_each_pipe(dev_priv, pipe) { |
dc4bd2d1 PZ |
6655 | val = I915_READ(TRANS_CHICKEN2(pipe)); |
6656 | val |= TRANS_CHICKEN2_TIMING_OVERRIDE; | |
6657 | val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED; | |
41aa3448 | 6658 | if (dev_priv->vbt.fdi_rx_polarity_inverted) |
3f704fa2 | 6659 | val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED; |
dc4bd2d1 PZ |
6660 | val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK; |
6661 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER; | |
6662 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH; | |
3f704fa2 PZ |
6663 | I915_WRITE(TRANS_CHICKEN2(pipe), val); |
6664 | } | |
3107bd48 | 6665 | /* WADP0ClockGatingDisable */ |
055e393f | 6666 | for_each_pipe(dev_priv, pipe) { |
3107bd48 DV |
6667 | I915_WRITE(TRANS_CHICKEN1(pipe), |
6668 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); | |
6669 | } | |
6f1d69b0 ED |
6670 | } |
6671 | ||
1d7aaa0c DV |
6672 | static void gen6_check_mch_setup(struct drm_device *dev) |
6673 | { | |
6674 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6675 | uint32_t tmp; | |
6676 | ||
6677 | tmp = I915_READ(MCH_SSKPD); | |
df662a28 DV |
6678 | if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL) |
6679 | DRM_DEBUG_KMS("Wrong MCH_SSKPD value: 0x%08x This can cause underruns.\n", | |
6680 | tmp); | |
1d7aaa0c DV |
6681 | } |
6682 | ||
1fa61106 | 6683 | static void gen6_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6684 | { |
6685 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231e54f6 | 6686 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 6687 | |
231e54f6 | 6688 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
6f1d69b0 ED |
6689 | |
6690 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
6691 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6692 | ILK_ELPIN_409_SELECT); | |
6693 | ||
ecdb4eb7 | 6694 | /* WaDisableHiZPlanesWhenMSAAEnabled:snb */ |
4283908e DV |
6695 | I915_WRITE(_3D_CHICKEN, |
6696 | _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB)); | |
6697 | ||
4e04632e AG |
6698 | /* WaDisable_RenderCache_OperationalFlush:snb */ |
6699 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6700 | ||
8d85d272 VS |
6701 | /* |
6702 | * BSpec recoomends 8x4 when MSAA is used, | |
6703 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
6704 | * |
6705 | * Note that PS/WM thread counts depend on the WIZ hashing | |
6706 | * disable bit, which we don't touch here, but it's good | |
6707 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
8d85d272 VS |
6708 | */ |
6709 | I915_WRITE(GEN6_GT_MODE, | |
98533251 | 6710 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
8d85d272 | 6711 | |
017636cc | 6712 | ilk_init_lp_watermarks(dev); |
6f1d69b0 | 6713 | |
6f1d69b0 | 6714 | I915_WRITE(CACHE_MODE_0, |
50743298 | 6715 | _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB)); |
6f1d69b0 ED |
6716 | |
6717 | I915_WRITE(GEN6_UCGCTL1, | |
6718 | I915_READ(GEN6_UCGCTL1) | | |
6719 | GEN6_BLBUNIT_CLOCK_GATE_DISABLE | | |
6720 | GEN6_CSUNIT_CLOCK_GATE_DISABLE); | |
6721 | ||
6722 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock | |
6723 | * gating disable must be set. Failure to set it results in | |
6724 | * flickering pixels due to Z write ordering failures after | |
6725 | * some amount of runtime in the Mesa "fire" demo, and Unigine | |
6726 | * Sanctuary and Tropics, and apparently anything else with | |
6727 | * alpha test or pixel discard. | |
6728 | * | |
6729 | * According to the spec, bit 11 (RCCUNIT) must also be set, | |
6730 | * but we didn't debug actual testcases to find it out. | |
0f846f81 | 6731 | * |
ef59318c VS |
6732 | * WaDisableRCCUnitClockGating:snb |
6733 | * WaDisableRCPBUnitClockGating:snb | |
6f1d69b0 ED |
6734 | */ |
6735 | I915_WRITE(GEN6_UCGCTL2, | |
6736 | GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | | |
6737 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); | |
6738 | ||
5eb146dd | 6739 | /* WaStripsFansDisableFastClipPerformanceFix:snb */ |
743b57d8 VS |
6740 | I915_WRITE(_3D_CHICKEN3, |
6741 | _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL)); | |
6f1d69b0 | 6742 | |
e927ecde VS |
6743 | /* |
6744 | * Bspec says: | |
6745 | * "This bit must be set if 3DSTATE_CLIP clip mode is set to normal and | |
6746 | * 3DSTATE_SF number of SF output attributes is more than 16." | |
6747 | */ | |
6748 | I915_WRITE(_3D_CHICKEN3, | |
6749 | _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_PIPELINED_ATTR_FETCH)); | |
6750 | ||
6f1d69b0 ED |
6751 | /* |
6752 | * According to the spec the following bits should be | |
6753 | * set in order to enable memory self-refresh and fbc: | |
6754 | * The bit21 and bit22 of 0x42000 | |
6755 | * The bit21 and bit22 of 0x42004 | |
6756 | * The bit5 and bit7 of 0x42020 | |
6757 | * The bit14 of 0x70180 | |
6758 | * The bit14 of 0x71180 | |
4bb35334 DL |
6759 | * |
6760 | * WaFbcAsynchFlipDisableFbcQueue:snb | |
6f1d69b0 ED |
6761 | */ |
6762 | I915_WRITE(ILK_DISPLAY_CHICKEN1, | |
6763 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
6764 | ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS); | |
6765 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
6766 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6767 | ILK_DPARB_GATE | ILK_VSDPFD_FULL); | |
231e54f6 DL |
6768 | I915_WRITE(ILK_DSPCLK_GATE_D, |
6769 | I915_READ(ILK_DSPCLK_GATE_D) | | |
6770 | ILK_DPARBUNIT_CLOCK_GATE_ENABLE | | |
6771 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE); | |
6f1d69b0 | 6772 | |
0e088b8f | 6773 | g4x_disable_trickle_feed(dev); |
f8f2ac9a | 6774 | |
3107bd48 | 6775 | cpt_init_clock_gating(dev); |
1d7aaa0c DV |
6776 | |
6777 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
6778 | } |
6779 | ||
6780 | static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv) | |
6781 | { | |
6782 | uint32_t reg = I915_READ(GEN7_FF_THREAD_MODE); | |
6783 | ||
3aad9059 | 6784 | /* |
46680e0a | 6785 | * WaVSThreadDispatchOverride:ivb,vlv |
3aad9059 VS |
6786 | * |
6787 | * This actually overrides the dispatch | |
6788 | * mode for all thread types. | |
6789 | */ | |
6f1d69b0 ED |
6790 | reg &= ~GEN7_FF_SCHED_MASK; |
6791 | reg |= GEN7_FF_TS_SCHED_HW; | |
6792 | reg |= GEN7_FF_VS_SCHED_HW; | |
6793 | reg |= GEN7_FF_DS_SCHED_HW; | |
6794 | ||
6795 | I915_WRITE(GEN7_FF_THREAD_MODE, reg); | |
6796 | } | |
6797 | ||
17a303ec PZ |
6798 | static void lpt_init_clock_gating(struct drm_device *dev) |
6799 | { | |
6800 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6801 | ||
6802 | /* | |
6803 | * TODO: this bit should only be enabled when really needed, then | |
6804 | * disabled when not needed anymore in order to save power. | |
6805 | */ | |
c2699524 | 6806 | if (HAS_PCH_LPT_LP(dev)) |
17a303ec PZ |
6807 | I915_WRITE(SOUTH_DSPCLK_GATE_D, |
6808 | I915_READ(SOUTH_DSPCLK_GATE_D) | | |
6809 | PCH_LP_PARTITION_LEVEL_DISABLE); | |
0a790cdb PZ |
6810 | |
6811 | /* WADPOClockGatingDisable:hsw */ | |
36c0d0cf VS |
6812 | I915_WRITE(TRANS_CHICKEN1(PIPE_A), |
6813 | I915_READ(TRANS_CHICKEN1(PIPE_A)) | | |
0a790cdb | 6814 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); |
17a303ec PZ |
6815 | } |
6816 | ||
7d708ee4 ID |
6817 | static void lpt_suspend_hw(struct drm_device *dev) |
6818 | { | |
6819 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6820 | ||
c2699524 | 6821 | if (HAS_PCH_LPT_LP(dev)) { |
7d708ee4 ID |
6822 | uint32_t val = I915_READ(SOUTH_DSPCLK_GATE_D); |
6823 | ||
6824 | val &= ~PCH_LP_PARTITION_LEVEL_DISABLE; | |
6825 | I915_WRITE(SOUTH_DSPCLK_GATE_D, val); | |
6826 | } | |
6827 | } | |
6828 | ||
450174fe ID |
6829 | static void gen8_set_l3sqc_credits(struct drm_i915_private *dev_priv, |
6830 | int general_prio_credits, | |
6831 | int high_prio_credits) | |
6832 | { | |
6833 | u32 misccpctl; | |
6834 | ||
6835 | /* WaTempDisableDOPClkGating:bdw */ | |
6836 | misccpctl = I915_READ(GEN7_MISCCPCTL); | |
6837 | I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); | |
6838 | ||
6839 | I915_WRITE(GEN8_L3SQCREG1, | |
6840 | L3_GENERAL_PRIO_CREDITS(general_prio_credits) | | |
6841 | L3_HIGH_PRIO_CREDITS(high_prio_credits)); | |
6842 | ||
6843 | /* | |
6844 | * Wait at least 100 clocks before re-enabling clock gating. | |
6845 | * See the definition of L3SQCREG1 in BSpec. | |
6846 | */ | |
6847 | POSTING_READ(GEN8_L3SQCREG1); | |
6848 | udelay(1); | |
6849 | I915_WRITE(GEN7_MISCCPCTL, misccpctl); | |
6850 | } | |
6851 | ||
dc00b6a0 DV |
6852 | static void skylake_init_clock_gating(struct drm_device *dev) |
6853 | { | |
6854 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6855 | ||
6856 | /* See Bspec note for PSR2_CTL bit 31, Wa#828:skl,kbl */ | |
6857 | I915_WRITE(CHICKEN_PAR1_1, | |
6858 | I915_READ(CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP); | |
6859 | } | |
6860 | ||
47c2bd97 | 6861 | static void broadwell_init_clock_gating(struct drm_device *dev) |
1020a5c2 BW |
6862 | { |
6863 | struct drm_i915_private *dev_priv = dev->dev_private; | |
07d27e20 | 6864 | enum pipe pipe; |
1020a5c2 | 6865 | |
7ad0dbab | 6866 | ilk_init_lp_watermarks(dev); |
50ed5fbd | 6867 | |
ab57fff1 | 6868 | /* WaSwitchSolVfFArbitrationPriority:bdw */ |
50ed5fbd | 6869 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); |
fe4ab3ce | 6870 | |
ab57fff1 | 6871 | /* WaPsrDPAMaskVBlankInSRD:bdw */ |
fe4ab3ce BW |
6872 | I915_WRITE(CHICKEN_PAR1_1, |
6873 | I915_READ(CHICKEN_PAR1_1) | DPA_MASK_VBLANK_SRD); | |
6874 | ||
ab57fff1 | 6875 | /* WaPsrDPRSUnmaskVBlankInSRD:bdw */ |
055e393f | 6876 | for_each_pipe(dev_priv, pipe) { |
07d27e20 | 6877 | I915_WRITE(CHICKEN_PIPESL_1(pipe), |
c7c65622 | 6878 | I915_READ(CHICKEN_PIPESL_1(pipe)) | |
8f670bb1 | 6879 | BDW_DPRS_MASK_VBLANK_SRD); |
fe4ab3ce | 6880 | } |
63801f21 | 6881 | |
ab57fff1 BW |
6882 | /* WaVSRefCountFullforceMissDisable:bdw */ |
6883 | /* WaDSRefCountFullforceMissDisable:bdw */ | |
6884 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
6885 | I915_READ(GEN7_FF_THREAD_MODE) & | |
6886 | ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME)); | |
36075a4c | 6887 | |
295e8bb7 VS |
6888 | I915_WRITE(GEN6_RC_SLEEP_PSMI_CONTROL, |
6889 | _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); | |
4f1ca9e9 VS |
6890 | |
6891 | /* WaDisableSDEUnitClockGating:bdw */ | |
6892 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
6893 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
5d708680 | 6894 | |
450174fe ID |
6895 | /* WaProgramL3SqcReg1Default:bdw */ |
6896 | gen8_set_l3sqc_credits(dev_priv, 30, 2); | |
4d487cff | 6897 | |
6d50b065 VS |
6898 | /* |
6899 | * WaGttCachingOffByDefault:bdw | |
6900 | * GTT cache may not work with big pages, so if those | |
6901 | * are ever enabled GTT cache may need to be disabled. | |
6902 | */ | |
6903 | I915_WRITE(HSW_GTT_CACHE_EN, GTT_CACHE_EN_ALL); | |
6904 | ||
89d6b2b8 | 6905 | lpt_init_clock_gating(dev); |
1020a5c2 BW |
6906 | } |
6907 | ||
cad2a2d7 ED |
6908 | static void haswell_init_clock_gating(struct drm_device *dev) |
6909 | { | |
6910 | struct drm_i915_private *dev_priv = dev->dev_private; | |
cad2a2d7 | 6911 | |
017636cc | 6912 | ilk_init_lp_watermarks(dev); |
cad2a2d7 | 6913 | |
f3fc4884 FJ |
6914 | /* L3 caching of data atomics doesn't work -- disable it. */ |
6915 | I915_WRITE(HSW_SCRATCH1, HSW_SCRATCH1_L3_DATA_ATOMICS_DISABLE); | |
6916 | I915_WRITE(HSW_ROW_CHICKEN3, | |
6917 | _MASKED_BIT_ENABLE(HSW_ROW_CHICKEN3_L3_GLOBAL_ATOMICS_DISABLE)); | |
6918 | ||
ecdb4eb7 | 6919 | /* This is required by WaCatErrorRejectionIssue:hsw */ |
cad2a2d7 ED |
6920 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
6921 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
6922 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
6923 | ||
e36ea7ff VS |
6924 | /* WaVSRefCountFullforceMissDisable:hsw */ |
6925 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
6926 | I915_READ(GEN7_FF_THREAD_MODE) & ~GEN7_FF_VS_REF_CNT_FFME); | |
cad2a2d7 | 6927 | |
4e04632e AG |
6928 | /* WaDisable_RenderCache_OperationalFlush:hsw */ |
6929 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6930 | ||
fe27c606 CW |
6931 | /* enable HiZ Raw Stall Optimization */ |
6932 | I915_WRITE(CACHE_MODE_0_GEN7, | |
6933 | _MASKED_BIT_DISABLE(HIZ_RAW_STALL_OPT_DISABLE)); | |
6934 | ||
ecdb4eb7 | 6935 | /* WaDisable4x2SubspanOptimization:hsw */ |
cad2a2d7 ED |
6936 | I915_WRITE(CACHE_MODE_1, |
6937 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
1544d9d5 | 6938 | |
a12c4967 VS |
6939 | /* |
6940 | * BSpec recommends 8x4 when MSAA is used, | |
6941 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
6942 | * |
6943 | * Note that PS/WM thread counts depend on the WIZ hashing | |
6944 | * disable bit, which we don't touch here, but it's good | |
6945 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
a12c4967 VS |
6946 | */ |
6947 | I915_WRITE(GEN7_GT_MODE, | |
98533251 | 6948 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
a12c4967 | 6949 | |
94411593 KG |
6950 | /* WaSampleCChickenBitEnable:hsw */ |
6951 | I915_WRITE(HALF_SLICE_CHICKEN3, | |
6952 | _MASKED_BIT_ENABLE(HSW_SAMPLE_C_PERFORMANCE)); | |
6953 | ||
ecdb4eb7 | 6954 | /* WaSwitchSolVfFArbitrationPriority:hsw */ |
e3dff585 BW |
6955 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); |
6956 | ||
90a88643 PZ |
6957 | /* WaRsPkgCStateDisplayPMReq:hsw */ |
6958 | I915_WRITE(CHICKEN_PAR1_1, | |
6959 | I915_READ(CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES); | |
1544d9d5 | 6960 | |
17a303ec | 6961 | lpt_init_clock_gating(dev); |
cad2a2d7 ED |
6962 | } |
6963 | ||
1fa61106 | 6964 | static void ivybridge_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
6965 | { |
6966 | struct drm_i915_private *dev_priv = dev->dev_private; | |
20848223 | 6967 | uint32_t snpcr; |
6f1d69b0 | 6968 | |
017636cc | 6969 | ilk_init_lp_watermarks(dev); |
6f1d69b0 | 6970 | |
231e54f6 | 6971 | I915_WRITE(ILK_DSPCLK_GATE_D, ILK_VRHUNIT_CLOCK_GATE_DISABLE); |
6f1d69b0 | 6972 | |
ecdb4eb7 | 6973 | /* WaDisableEarlyCull:ivb */ |
87f8020e JB |
6974 | I915_WRITE(_3D_CHICKEN3, |
6975 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
6976 | ||
ecdb4eb7 | 6977 | /* WaDisableBackToBackFlipFix:ivb */ |
6f1d69b0 ED |
6978 | I915_WRITE(IVB_CHICKEN3, |
6979 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
6980 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
6981 | ||
ecdb4eb7 | 6982 | /* WaDisablePSDDualDispatchEnable:ivb */ |
12f3382b JB |
6983 | if (IS_IVB_GT1(dev)) |
6984 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, | |
6985 | _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
12f3382b | 6986 | |
4e04632e AG |
6987 | /* WaDisable_RenderCache_OperationalFlush:ivb */ |
6988 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6989 | ||
ecdb4eb7 | 6990 | /* Apply the WaDisableRHWOOptimizationForRenderHang:ivb workaround. */ |
6f1d69b0 ED |
6991 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
6992 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); | |
6993 | ||
ecdb4eb7 | 6994 | /* WaApplyL3ControlAndL3ChickenMode:ivb */ |
6f1d69b0 ED |
6995 | I915_WRITE(GEN7_L3CNTLREG1, |
6996 | GEN7_WA_FOR_GEN7_L3_CONTROL); | |
6997 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, | |
8ab43976 JB |
6998 | GEN7_WA_L3_CHICKEN_MODE); |
6999 | if (IS_IVB_GT1(dev)) | |
7000 | I915_WRITE(GEN7_ROW_CHICKEN2, | |
7001 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
412236c2 VS |
7002 | else { |
7003 | /* must write both registers */ | |
7004 | I915_WRITE(GEN7_ROW_CHICKEN2, | |
7005 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
8ab43976 JB |
7006 | I915_WRITE(GEN7_ROW_CHICKEN2_GT2, |
7007 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
412236c2 | 7008 | } |
6f1d69b0 | 7009 | |
ecdb4eb7 | 7010 | /* WaForceL3Serialization:ivb */ |
61939d97 JB |
7011 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
7012 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
7013 | ||
1b80a19a | 7014 | /* |
0f846f81 | 7015 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. |
ecdb4eb7 | 7016 | * This implements the WaDisableRCZUnitClockGating:ivb workaround. |
0f846f81 JB |
7017 | */ |
7018 | I915_WRITE(GEN6_UCGCTL2, | |
28acf3b2 | 7019 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE); |
0f846f81 | 7020 | |
ecdb4eb7 | 7021 | /* This is required by WaCatErrorRejectionIssue:ivb */ |
6f1d69b0 ED |
7022 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
7023 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
7024 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
7025 | ||
0e088b8f | 7026 | g4x_disable_trickle_feed(dev); |
6f1d69b0 ED |
7027 | |
7028 | gen7_setup_fixed_func_scheduler(dev_priv); | |
97e1930f | 7029 | |
22721343 CW |
7030 | if (0) { /* causes HiZ corruption on ivb:gt1 */ |
7031 | /* enable HiZ Raw Stall Optimization */ | |
7032 | I915_WRITE(CACHE_MODE_0_GEN7, | |
7033 | _MASKED_BIT_DISABLE(HIZ_RAW_STALL_OPT_DISABLE)); | |
7034 | } | |
116f2b6d | 7035 | |
ecdb4eb7 | 7036 | /* WaDisable4x2SubspanOptimization:ivb */ |
97e1930f DV |
7037 | I915_WRITE(CACHE_MODE_1, |
7038 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
20848223 | 7039 | |
a607c1a4 VS |
7040 | /* |
7041 | * BSpec recommends 8x4 when MSAA is used, | |
7042 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
7043 | * |
7044 | * Note that PS/WM thread counts depend on the WIZ hashing | |
7045 | * disable bit, which we don't touch here, but it's good | |
7046 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
a607c1a4 VS |
7047 | */ |
7048 | I915_WRITE(GEN7_GT_MODE, | |
98533251 | 7049 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
a607c1a4 | 7050 | |
20848223 BW |
7051 | snpcr = I915_READ(GEN6_MBCUNIT_SNPCR); |
7052 | snpcr &= ~GEN6_MBC_SNPCR_MASK; | |
7053 | snpcr |= GEN6_MBC_SNPCR_MED; | |
7054 | I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr); | |
3107bd48 | 7055 | |
ab5c608b BW |
7056 | if (!HAS_PCH_NOP(dev)) |
7057 | cpt_init_clock_gating(dev); | |
1d7aaa0c DV |
7058 | |
7059 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
7060 | } |
7061 | ||
1fa61106 | 7062 | static void valleyview_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7063 | { |
7064 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6f1d69b0 | 7065 | |
ecdb4eb7 | 7066 | /* WaDisableEarlyCull:vlv */ |
87f8020e JB |
7067 | I915_WRITE(_3D_CHICKEN3, |
7068 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
7069 | ||
ecdb4eb7 | 7070 | /* WaDisableBackToBackFlipFix:vlv */ |
6f1d69b0 ED |
7071 | I915_WRITE(IVB_CHICKEN3, |
7072 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
7073 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
7074 | ||
fad7d36e | 7075 | /* WaPsdDispatchEnable:vlv */ |
ecdb4eb7 | 7076 | /* WaDisablePSDDualDispatchEnable:vlv */ |
12f3382b | 7077 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, |
d3bc0303 JB |
7078 | _MASKED_BIT_ENABLE(GEN7_MAX_PS_THREAD_DEP | |
7079 | GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
12f3382b | 7080 | |
4e04632e AG |
7081 | /* WaDisable_RenderCache_OperationalFlush:vlv */ |
7082 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
7083 | ||
ecdb4eb7 | 7084 | /* WaForceL3Serialization:vlv */ |
61939d97 JB |
7085 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
7086 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
7087 | ||
ecdb4eb7 | 7088 | /* WaDisableDopClockGating:vlv */ |
8ab43976 JB |
7089 | I915_WRITE(GEN7_ROW_CHICKEN2, |
7090 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
7091 | ||
ecdb4eb7 | 7092 | /* This is required by WaCatErrorRejectionIssue:vlv */ |
6f1d69b0 ED |
7093 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
7094 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
7095 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
7096 | ||
46680e0a VS |
7097 | gen7_setup_fixed_func_scheduler(dev_priv); |
7098 | ||
3c0edaeb | 7099 | /* |
0f846f81 | 7100 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. |
ecdb4eb7 | 7101 | * This implements the WaDisableRCZUnitClockGating:vlv workaround. |
0f846f81 JB |
7102 | */ |
7103 | I915_WRITE(GEN6_UCGCTL2, | |
3c0edaeb | 7104 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE); |
0f846f81 | 7105 | |
c98f5062 AG |
7106 | /* WaDisableL3Bank2xClockGate:vlv |
7107 | * Disabling L3 clock gating- MMIO 940c[25] = 1 | |
7108 | * Set bit 25, to disable L3_BANK_2x_CLK_GATING */ | |
7109 | I915_WRITE(GEN7_UCGCTL4, | |
7110 | I915_READ(GEN7_UCGCTL4) | GEN7_L3BANK2X_CLOCK_GATE_DISABLE); | |
e3f33d46 | 7111 | |
afd58e79 VS |
7112 | /* |
7113 | * BSpec says this must be set, even though | |
7114 | * WaDisable4x2SubspanOptimization isn't listed for VLV. | |
7115 | */ | |
6b26c86d DV |
7116 | I915_WRITE(CACHE_MODE_1, |
7117 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
7983117f | 7118 | |
da2518f9 VS |
7119 | /* |
7120 | * BSpec recommends 8x4 when MSAA is used, | |
7121 | * however in practice 16x4 seems fastest. | |
7122 | * | |
7123 | * Note that PS/WM thread counts depend on the WIZ hashing | |
7124 | * disable bit, which we don't touch here, but it's good | |
7125 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
7126 | */ | |
7127 | I915_WRITE(GEN7_GT_MODE, | |
7128 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); | |
7129 | ||
031994ee VS |
7130 | /* |
7131 | * WaIncreaseL3CreditsForVLVB0:vlv | |
7132 | * This is the hardware default actually. | |
7133 | */ | |
7134 | I915_WRITE(GEN7_L3SQCREG1, VLV_B0_WA_L3SQCREG1_VALUE); | |
7135 | ||
2d809570 | 7136 | /* |
ecdb4eb7 | 7137 | * WaDisableVLVClockGating_VBIIssue:vlv |
2d809570 JB |
7138 | * Disable clock gating on th GCFG unit to prevent a delay |
7139 | * in the reporting of vblank events. | |
7140 | */ | |
7a0d1eed | 7141 | I915_WRITE(VLV_GUNIT_CLOCK_GATE, GCFG_DIS); |
6f1d69b0 ED |
7142 | } |
7143 | ||
a4565da8 VS |
7144 | static void cherryview_init_clock_gating(struct drm_device *dev) |
7145 | { | |
7146 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7147 | ||
232ce337 VS |
7148 | /* WaVSRefCountFullforceMissDisable:chv */ |
7149 | /* WaDSRefCountFullforceMissDisable:chv */ | |
7150 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
7151 | I915_READ(GEN7_FF_THREAD_MODE) & | |
7152 | ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME)); | |
acea6f95 VS |
7153 | |
7154 | /* WaDisableSemaphoreAndSyncFlipWait:chv */ | |
7155 | I915_WRITE(GEN6_RC_SLEEP_PSMI_CONTROL, | |
7156 | _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); | |
0846697c VS |
7157 | |
7158 | /* WaDisableCSUnitClockGating:chv */ | |
7159 | I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) | | |
7160 | GEN6_CSUNIT_CLOCK_GATE_DISABLE); | |
c631780f VS |
7161 | |
7162 | /* WaDisableSDEUnitClockGating:chv */ | |
7163 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
7164 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
6d50b065 | 7165 | |
450174fe ID |
7166 | /* |
7167 | * WaProgramL3SqcReg1Default:chv | |
7168 | * See gfxspecs/Related Documents/Performance Guide/ | |
7169 | * LSQC Setting Recommendations. | |
7170 | */ | |
7171 | gen8_set_l3sqc_credits(dev_priv, 38, 2); | |
7172 | ||
6d50b065 VS |
7173 | /* |
7174 | * GTT cache may not work with big pages, so if those | |
7175 | * are ever enabled GTT cache may need to be disabled. | |
7176 | */ | |
7177 | I915_WRITE(HSW_GTT_CACHE_EN, GTT_CACHE_EN_ALL); | |
a4565da8 VS |
7178 | } |
7179 | ||
1fa61106 | 7180 | static void g4x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7181 | { |
7182 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7183 | uint32_t dspclk_gate; | |
7184 | ||
7185 | I915_WRITE(RENCLK_GATE_D1, 0); | |
7186 | I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE | | |
7187 | GS_UNIT_CLOCK_GATE_DISABLE | | |
7188 | CL_UNIT_CLOCK_GATE_DISABLE); | |
7189 | I915_WRITE(RAMCLK_GATE_D, 0); | |
7190 | dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE | | |
7191 | OVRUNIT_CLOCK_GATE_DISABLE | | |
7192 | OVCUNIT_CLOCK_GATE_DISABLE; | |
7193 | if (IS_GM45(dev)) | |
7194 | dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE; | |
7195 | I915_WRITE(DSPCLK_GATE_D, dspclk_gate); | |
4358a374 DV |
7196 | |
7197 | /* WaDisableRenderCachePipelinedFlush */ | |
7198 | I915_WRITE(CACHE_MODE_0, | |
7199 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
de1aa629 | 7200 | |
4e04632e AG |
7201 | /* WaDisable_RenderCache_OperationalFlush:g4x */ |
7202 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
7203 | ||
0e088b8f | 7204 | g4x_disable_trickle_feed(dev); |
6f1d69b0 ED |
7205 | } |
7206 | ||
1fa61106 | 7207 | static void crestline_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7208 | { |
7209 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7210 | ||
7211 | I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE); | |
7212 | I915_WRITE(RENCLK_GATE_D2, 0); | |
7213 | I915_WRITE(DSPCLK_GATE_D, 0); | |
7214 | I915_WRITE(RAMCLK_GATE_D, 0); | |
7215 | I915_WRITE16(DEUC, 0); | |
20f94967 VS |
7216 | I915_WRITE(MI_ARB_STATE, |
7217 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
4e04632e AG |
7218 | |
7219 | /* WaDisable_RenderCache_OperationalFlush:gen4 */ | |
7220 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6f1d69b0 ED |
7221 | } |
7222 | ||
1fa61106 | 7223 | static void broadwater_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7224 | { |
7225 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7226 | ||
7227 | I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE | | |
7228 | I965_RCC_CLOCK_GATE_DISABLE | | |
7229 | I965_RCPB_CLOCK_GATE_DISABLE | | |
7230 | I965_ISC_CLOCK_GATE_DISABLE | | |
7231 | I965_FBC_CLOCK_GATE_DISABLE); | |
7232 | I915_WRITE(RENCLK_GATE_D2, 0); | |
20f94967 VS |
7233 | I915_WRITE(MI_ARB_STATE, |
7234 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
4e04632e AG |
7235 | |
7236 | /* WaDisable_RenderCache_OperationalFlush:gen4 */ | |
7237 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6f1d69b0 ED |
7238 | } |
7239 | ||
1fa61106 | 7240 | static void gen3_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7241 | { |
7242 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7243 | u32 dstate = I915_READ(D_STATE); | |
7244 | ||
7245 | dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING | | |
7246 | DSTATE_DOT_CLOCK_GATING; | |
7247 | I915_WRITE(D_STATE, dstate); | |
13a86b85 CW |
7248 | |
7249 | if (IS_PINEVIEW(dev)) | |
7250 | I915_WRITE(ECOSKPD, _MASKED_BIT_ENABLE(ECO_GATING_CX_ONLY)); | |
974a3b0f DV |
7251 | |
7252 | /* IIR "flip pending" means done if this bit is set */ | |
7253 | I915_WRITE(ECOSKPD, _MASKED_BIT_DISABLE(ECO_FLIP_DONE)); | |
12fabbcb VS |
7254 | |
7255 | /* interrupts should cause a wake up from C3 */ | |
3299254f | 7256 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_INT_EN)); |
dbb42748 VS |
7257 | |
7258 | /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ | |
7259 | I915_WRITE(MI_ARB_STATE, _MASKED_BIT_ENABLE(MI_ARB_C3_LP_WRITE_ENABLE)); | |
1038392b VS |
7260 | |
7261 | I915_WRITE(MI_ARB_STATE, | |
7262 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
7263 | } |
7264 | ||
1fa61106 | 7265 | static void i85x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7266 | { |
7267 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7268 | ||
7269 | I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE); | |
54e472ae VS |
7270 | |
7271 | /* interrupts should cause a wake up from C3 */ | |
7272 | I915_WRITE(MI_STATE, _MASKED_BIT_ENABLE(MI_AGPBUSY_INT_EN) | | |
7273 | _MASKED_BIT_DISABLE(MI_AGPBUSY_830_MODE)); | |
1038392b VS |
7274 | |
7275 | I915_WRITE(MEM_MODE, | |
7276 | _MASKED_BIT_ENABLE(MEM_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
7277 | } |
7278 | ||
1fa61106 | 7279 | static void i830_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
7280 | { |
7281 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7282 | ||
7283 | I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE); | |
1038392b VS |
7284 | |
7285 | I915_WRITE(MEM_MODE, | |
7286 | _MASKED_BIT_ENABLE(MEM_DISPLAY_A_TRICKLE_FEED_DISABLE) | | |
7287 | _MASKED_BIT_ENABLE(MEM_DISPLAY_B_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
7288 | } |
7289 | ||
6f1d69b0 ED |
7290 | void intel_init_clock_gating(struct drm_device *dev) |
7291 | { | |
7292 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7293 | ||
bb400da9 | 7294 | dev_priv->display.init_clock_gating(dev); |
6f1d69b0 ED |
7295 | } |
7296 | ||
7d708ee4 ID |
7297 | void intel_suspend_hw(struct drm_device *dev) |
7298 | { | |
7299 | if (HAS_PCH_LPT(dev)) | |
7300 | lpt_suspend_hw(dev); | |
7301 | } | |
7302 | ||
bb400da9 ID |
7303 | static void nop_init_clock_gating(struct drm_device *dev) |
7304 | { | |
7305 | DRM_DEBUG_KMS("No clock gating settings or workarounds applied.\n"); | |
7306 | } | |
7307 | ||
7308 | /** | |
7309 | * intel_init_clock_gating_hooks - setup the clock gating hooks | |
7310 | * @dev_priv: device private | |
7311 | * | |
7312 | * Setup the hooks that configure which clocks of a given platform can be | |
7313 | * gated and also apply various GT and display specific workarounds for these | |
7314 | * platforms. Note that some GT specific workarounds are applied separately | |
7315 | * when GPU contexts or batchbuffers start their execution. | |
7316 | */ | |
7317 | void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv) | |
7318 | { | |
7319 | if (IS_SKYLAKE(dev_priv)) | |
dc00b6a0 | 7320 | dev_priv->display.init_clock_gating = skylake_init_clock_gating; |
bb400da9 | 7321 | else if (IS_KABYLAKE(dev_priv)) |
dc00b6a0 | 7322 | dev_priv->display.init_clock_gating = skylake_init_clock_gating; |
bb400da9 ID |
7323 | else if (IS_BROXTON(dev_priv)) |
7324 | dev_priv->display.init_clock_gating = bxt_init_clock_gating; | |
7325 | else if (IS_BROADWELL(dev_priv)) | |
7326 | dev_priv->display.init_clock_gating = broadwell_init_clock_gating; | |
7327 | else if (IS_CHERRYVIEW(dev_priv)) | |
7328 | dev_priv->display.init_clock_gating = cherryview_init_clock_gating; | |
7329 | else if (IS_HASWELL(dev_priv)) | |
7330 | dev_priv->display.init_clock_gating = haswell_init_clock_gating; | |
7331 | else if (IS_IVYBRIDGE(dev_priv)) | |
7332 | dev_priv->display.init_clock_gating = ivybridge_init_clock_gating; | |
7333 | else if (IS_VALLEYVIEW(dev_priv)) | |
7334 | dev_priv->display.init_clock_gating = valleyview_init_clock_gating; | |
7335 | else if (IS_GEN6(dev_priv)) | |
7336 | dev_priv->display.init_clock_gating = gen6_init_clock_gating; | |
7337 | else if (IS_GEN5(dev_priv)) | |
7338 | dev_priv->display.init_clock_gating = ironlake_init_clock_gating; | |
7339 | else if (IS_G4X(dev_priv)) | |
7340 | dev_priv->display.init_clock_gating = g4x_init_clock_gating; | |
7341 | else if (IS_CRESTLINE(dev_priv)) | |
7342 | dev_priv->display.init_clock_gating = crestline_init_clock_gating; | |
7343 | else if (IS_BROADWATER(dev_priv)) | |
7344 | dev_priv->display.init_clock_gating = broadwater_init_clock_gating; | |
7345 | else if (IS_GEN3(dev_priv)) | |
7346 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; | |
7347 | else if (IS_I85X(dev_priv) || IS_I865G(dev_priv)) | |
7348 | dev_priv->display.init_clock_gating = i85x_init_clock_gating; | |
7349 | else if (IS_GEN2(dev_priv)) | |
7350 | dev_priv->display.init_clock_gating = i830_init_clock_gating; | |
7351 | else { | |
7352 | MISSING_CASE(INTEL_DEVID(dev_priv)); | |
7353 | dev_priv->display.init_clock_gating = nop_init_clock_gating; | |
7354 | } | |
7355 | } | |
7356 | ||
1fa61106 ED |
7357 | /* Set up chip specific power management-related functions */ |
7358 | void intel_init_pm(struct drm_device *dev) | |
7359 | { | |
7360 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7361 | ||
7ff0ebcc | 7362 | intel_fbc_init(dev_priv); |
1fa61106 | 7363 | |
c921aba8 DV |
7364 | /* For cxsr */ |
7365 | if (IS_PINEVIEW(dev)) | |
7366 | i915_pineview_get_mem_freq(dev); | |
7367 | else if (IS_GEN5(dev)) | |
7368 | i915_ironlake_get_mem_freq(dev); | |
7369 | ||
1fa61106 | 7370 | /* For FIFO watermark updates */ |
f5ed50cb | 7371 | if (INTEL_INFO(dev)->gen >= 9) { |
2af30a5c | 7372 | skl_setup_wm_latency(dev); |
2d41c0b5 | 7373 | dev_priv->display.update_wm = skl_update_wm; |
98d39494 | 7374 | dev_priv->display.compute_global_watermarks = skl_compute_wm; |
c83155a6 | 7375 | } else if (HAS_PCH_SPLIT(dev)) { |
fa50ad61 | 7376 | ilk_setup_wm_latency(dev); |
53615a5e | 7377 | |
bd602544 VS |
7378 | if ((IS_GEN5(dev) && dev_priv->wm.pri_latency[1] && |
7379 | dev_priv->wm.spr_latency[1] && dev_priv->wm.cur_latency[1]) || | |
7380 | (!IS_GEN5(dev) && dev_priv->wm.pri_latency[0] && | |
7381 | dev_priv->wm.spr_latency[0] && dev_priv->wm.cur_latency[0])) { | |
86c8bbbe | 7382 | dev_priv->display.compute_pipe_wm = ilk_compute_pipe_wm; |
ed4a6a7c MR |
7383 | dev_priv->display.compute_intermediate_wm = |
7384 | ilk_compute_intermediate_wm; | |
7385 | dev_priv->display.initial_watermarks = | |
7386 | ilk_initial_watermarks; | |
7387 | dev_priv->display.optimize_watermarks = | |
7388 | ilk_optimize_watermarks; | |
bd602544 VS |
7389 | } else { |
7390 | DRM_DEBUG_KMS("Failed to read display plane latency. " | |
7391 | "Disable CxSR\n"); | |
7392 | } | |
a4565da8 | 7393 | } else if (IS_CHERRYVIEW(dev)) { |
262cd2e1 | 7394 | vlv_setup_wm_latency(dev); |
262cd2e1 | 7395 | dev_priv->display.update_wm = vlv_update_wm; |
1fa61106 | 7396 | } else if (IS_VALLEYVIEW(dev)) { |
26e1fe4f | 7397 | vlv_setup_wm_latency(dev); |
26e1fe4f | 7398 | dev_priv->display.update_wm = vlv_update_wm; |
1fa61106 ED |
7399 | } else if (IS_PINEVIEW(dev)) { |
7400 | if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev), | |
7401 | dev_priv->is_ddr3, | |
7402 | dev_priv->fsb_freq, | |
7403 | dev_priv->mem_freq)) { | |
7404 | DRM_INFO("failed to find known CxSR latency " | |
7405 | "(found ddr%s fsb freq %d, mem freq %d), " | |
7406 | "disabling CxSR\n", | |
7407 | (dev_priv->is_ddr3 == 1) ? "3" : "2", | |
7408 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
7409 | /* Disable CxSR and never update its watermark again */ | |
5209b1f4 | 7410 | intel_set_memory_cxsr(dev_priv, false); |
1fa61106 ED |
7411 | dev_priv->display.update_wm = NULL; |
7412 | } else | |
7413 | dev_priv->display.update_wm = pineview_update_wm; | |
1fa61106 ED |
7414 | } else if (IS_G4X(dev)) { |
7415 | dev_priv->display.update_wm = g4x_update_wm; | |
1fa61106 ED |
7416 | } else if (IS_GEN4(dev)) { |
7417 | dev_priv->display.update_wm = i965_update_wm; | |
1fa61106 ED |
7418 | } else if (IS_GEN3(dev)) { |
7419 | dev_priv->display.update_wm = i9xx_update_wm; | |
7420 | dev_priv->display.get_fifo_size = i9xx_get_fifo_size; | |
feb56b93 DV |
7421 | } else if (IS_GEN2(dev)) { |
7422 | if (INTEL_INFO(dev)->num_pipes == 1) { | |
7423 | dev_priv->display.update_wm = i845_update_wm; | |
1fa61106 | 7424 | dev_priv->display.get_fifo_size = i845_get_fifo_size; |
feb56b93 DV |
7425 | } else { |
7426 | dev_priv->display.update_wm = i9xx_update_wm; | |
1fa61106 | 7427 | dev_priv->display.get_fifo_size = i830_get_fifo_size; |
feb56b93 | 7428 | } |
feb56b93 DV |
7429 | } else { |
7430 | DRM_ERROR("unexpected fall-through in intel_init_pm\n"); | |
1fa61106 ED |
7431 | } |
7432 | } | |
7433 | ||
151a49d0 | 7434 | int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val) |
42c0526c | 7435 | { |
4fc688ce | 7436 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c BW |
7437 | |
7438 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
7439 | DRM_DEBUG_DRIVER("warning: pcode (read) mailbox access failed\n"); | |
7440 | return -EAGAIN; | |
7441 | } | |
7442 | ||
7443 | I915_WRITE(GEN6_PCODE_DATA, *val); | |
dddab346 | 7444 | I915_WRITE(GEN6_PCODE_DATA1, 0); |
42c0526c BW |
7445 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); |
7446 | ||
7447 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, | |
7448 | 500)) { | |
7449 | DRM_ERROR("timeout waiting for pcode read (%d) to finish\n", mbox); | |
7450 | return -ETIMEDOUT; | |
7451 | } | |
7452 | ||
7453 | *val = I915_READ(GEN6_PCODE_DATA); | |
7454 | I915_WRITE(GEN6_PCODE_DATA, 0); | |
7455 | ||
7456 | return 0; | |
7457 | } | |
7458 | ||
151a49d0 | 7459 | int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u32 mbox, u32 val) |
42c0526c | 7460 | { |
4fc688ce | 7461 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c BW |
7462 | |
7463 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
7464 | DRM_DEBUG_DRIVER("warning: pcode (write) mailbox access failed\n"); | |
7465 | return -EAGAIN; | |
7466 | } | |
7467 | ||
7468 | I915_WRITE(GEN6_PCODE_DATA, val); | |
7469 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); | |
7470 | ||
7471 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, | |
7472 | 500)) { | |
7473 | DRM_ERROR("timeout waiting for pcode write (%d) to finish\n", mbox); | |
7474 | return -ETIMEDOUT; | |
7475 | } | |
7476 | ||
7477 | I915_WRITE(GEN6_PCODE_DATA, 0); | |
7478 | ||
7479 | return 0; | |
7480 | } | |
a0e4e199 | 7481 | |
dd06f88c VS |
7482 | static int byt_gpu_freq(struct drm_i915_private *dev_priv, int val) |
7483 | { | |
c30fec65 VS |
7484 | /* |
7485 | * N = val - 0xb7 | |
7486 | * Slow = Fast = GPLL ref * N | |
7487 | */ | |
7488 | return DIV_ROUND_CLOSEST(dev_priv->rps.gpll_ref_freq * (val - 0xb7), 1000); | |
855ba3be JB |
7489 | } |
7490 | ||
b55dd647 | 7491 | static int byt_freq_opcode(struct drm_i915_private *dev_priv, int val) |
855ba3be | 7492 | { |
c30fec65 | 7493 | return DIV_ROUND_CLOSEST(1000 * val, dev_priv->rps.gpll_ref_freq) + 0xb7; |
855ba3be JB |
7494 | } |
7495 | ||
b55dd647 | 7496 | static int chv_gpu_freq(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 7497 | { |
c30fec65 VS |
7498 | /* |
7499 | * N = val / 2 | |
7500 | * CU (slow) = CU2x (fast) / 2 = GPLL ref * N / 2 | |
7501 | */ | |
7502 | return DIV_ROUND_CLOSEST(dev_priv->rps.gpll_ref_freq * val, 2 * 2 * 1000); | |
22b1b2f8 D |
7503 | } |
7504 | ||
b55dd647 | 7505 | static int chv_freq_opcode(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 7506 | { |
1c14762d | 7507 | /* CHV needs even values */ |
c30fec65 | 7508 | return DIV_ROUND_CLOSEST(2 * 1000 * val, dev_priv->rps.gpll_ref_freq) * 2; |
22b1b2f8 D |
7509 | } |
7510 | ||
616bc820 | 7511 | int intel_gpu_freq(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 7512 | { |
2d1fe073 | 7513 | if (IS_GEN9(dev_priv)) |
500a3d2e MK |
7514 | return DIV_ROUND_CLOSEST(val * GT_FREQUENCY_MULTIPLIER, |
7515 | GEN9_FREQ_SCALER); | |
2d1fe073 | 7516 | else if (IS_CHERRYVIEW(dev_priv)) |
616bc820 | 7517 | return chv_gpu_freq(dev_priv, val); |
2d1fe073 | 7518 | else if (IS_VALLEYVIEW(dev_priv)) |
616bc820 VS |
7519 | return byt_gpu_freq(dev_priv, val); |
7520 | else | |
7521 | return val * GT_FREQUENCY_MULTIPLIER; | |
22b1b2f8 D |
7522 | } |
7523 | ||
616bc820 VS |
7524 | int intel_freq_opcode(struct drm_i915_private *dev_priv, int val) |
7525 | { | |
2d1fe073 | 7526 | if (IS_GEN9(dev_priv)) |
500a3d2e MK |
7527 | return DIV_ROUND_CLOSEST(val * GEN9_FREQ_SCALER, |
7528 | GT_FREQUENCY_MULTIPLIER); | |
2d1fe073 | 7529 | else if (IS_CHERRYVIEW(dev_priv)) |
616bc820 | 7530 | return chv_freq_opcode(dev_priv, val); |
2d1fe073 | 7531 | else if (IS_VALLEYVIEW(dev_priv)) |
616bc820 VS |
7532 | return byt_freq_opcode(dev_priv, val); |
7533 | else | |
500a3d2e | 7534 | return DIV_ROUND_CLOSEST(val, GT_FREQUENCY_MULTIPLIER); |
616bc820 | 7535 | } |
22b1b2f8 | 7536 | |
6ad790c0 CW |
7537 | struct request_boost { |
7538 | struct work_struct work; | |
eed29a5b | 7539 | struct drm_i915_gem_request *req; |
6ad790c0 CW |
7540 | }; |
7541 | ||
7542 | static void __intel_rps_boost_work(struct work_struct *work) | |
7543 | { | |
7544 | struct request_boost *boost = container_of(work, struct request_boost, work); | |
e61b9958 | 7545 | struct drm_i915_gem_request *req = boost->req; |
6ad790c0 | 7546 | |
e61b9958 | 7547 | if (!i915_gem_request_completed(req, true)) |
c033666a | 7548 | gen6_rps_boost(req->i915, NULL, req->emitted_jiffies); |
6ad790c0 | 7549 | |
73db04cf | 7550 | i915_gem_request_unreference(req); |
6ad790c0 CW |
7551 | kfree(boost); |
7552 | } | |
7553 | ||
91d14251 | 7554 | void intel_queue_rps_boost_for_request(struct drm_i915_gem_request *req) |
6ad790c0 CW |
7555 | { |
7556 | struct request_boost *boost; | |
7557 | ||
91d14251 | 7558 | if (req == NULL || INTEL_GEN(req->i915) < 6) |
6ad790c0 CW |
7559 | return; |
7560 | ||
e61b9958 CW |
7561 | if (i915_gem_request_completed(req, true)) |
7562 | return; | |
7563 | ||
6ad790c0 CW |
7564 | boost = kmalloc(sizeof(*boost), GFP_ATOMIC); |
7565 | if (boost == NULL) | |
7566 | return; | |
7567 | ||
eed29a5b DV |
7568 | i915_gem_request_reference(req); |
7569 | boost->req = req; | |
6ad790c0 CW |
7570 | |
7571 | INIT_WORK(&boost->work, __intel_rps_boost_work); | |
91d14251 | 7572 | queue_work(req->i915->wq, &boost->work); |
6ad790c0 CW |
7573 | } |
7574 | ||
f742a552 | 7575 | void intel_pm_setup(struct drm_device *dev) |
907b28c5 CW |
7576 | { |
7577 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7578 | ||
f742a552 | 7579 | mutex_init(&dev_priv->rps.hw_lock); |
8d3afd7d | 7580 | spin_lock_init(&dev_priv->rps.client_lock); |
f742a552 | 7581 | |
907b28c5 CW |
7582 | INIT_DELAYED_WORK(&dev_priv->rps.delayed_resume_work, |
7583 | intel_gen6_powersave_work); | |
1854d5ca | 7584 | INIT_LIST_HEAD(&dev_priv->rps.clients); |
2e1b8730 CW |
7585 | INIT_LIST_HEAD(&dev_priv->rps.semaphores.link); |
7586 | INIT_LIST_HEAD(&dev_priv->rps.mmioflips.link); | |
5d584b2e | 7587 | |
33688d95 | 7588 | dev_priv->pm.suspended = false; |
1f814dac | 7589 | atomic_set(&dev_priv->pm.wakeref_count, 0); |
2b19efeb | 7590 | atomic_set(&dev_priv->pm.atomic_seq, 0); |
907b28c5 | 7591 | } |