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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> |
9c2f7a9d | 29 | #include <drm/drm_plane_helper.h> |
85208be0 ED |
30 | #include "i915_drv.h" |
31 | #include "intel_drv.h" | |
eb48eb00 DV |
32 | #include "../../../platform/x86/intel_ips.h" |
33 | #include <linux/module.h> | |
85208be0 | 34 | |
dc39fff7 | 35 | /** |
18afd443 JN |
36 | * DOC: RC6 |
37 | * | |
dc39fff7 BW |
38 | * RC6 is a special power stage which allows the GPU to enter an very |
39 | * low-voltage mode when idle, using down to 0V while at this stage. This | |
40 | * stage is entered automatically when the GPU is idle when RC6 support is | |
41 | * enabled, and as soon as new workload arises GPU wakes up automatically as well. | |
42 | * | |
43 | * There are different RC6 modes available in Intel GPU, which differentiate | |
44 | * among each other with the latency required to enter and leave RC6 and | |
45 | * voltage consumed by the GPU in different states. | |
46 | * | |
47 | * The combination of the following flags define which states GPU is allowed | |
48 | * to enter, while RC6 is the normal RC6 state, RC6p is the deep RC6, and | |
49 | * RC6pp is deepest RC6. Their support by hardware varies according to the | |
50 | * GPU, BIOS, chipset and platform. RC6 is usually the safest one and the one | |
51 | * which brings the most power savings; deeper states save more power, but | |
52 | * require higher latency to switch to and wake up. | |
53 | */ | |
54 | #define INTEL_RC6_ENABLE (1<<0) | |
55 | #define INTEL_RC6p_ENABLE (1<<1) | |
56 | #define INTEL_RC6pp_ENABLE (1<<2) | |
57 | ||
b033bb6d | 58 | static void gen9_init_clock_gating(struct drm_device *dev) |
a82abe43 | 59 | { |
32608ca2 ID |
60 | struct drm_i915_private *dev_priv = dev->dev_private; |
61 | ||
b033bb6d | 62 | /* See Bspec note for PSR2_CTL bit 31, Wa#828:skl,bxt,kbl */ |
dc00b6a0 DV |
63 | I915_WRITE(CHICKEN_PAR1_1, |
64 | I915_READ(CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP); | |
65 | ||
b033bb6d MK |
66 | I915_WRITE(GEN8_CONFIG0, |
67 | I915_READ(GEN8_CONFIG0) | GEN9_DEFAULT_FIXES); | |
590e8ff0 MK |
68 | |
69 | /* WaEnableChickenDCPR:skl,bxt,kbl */ | |
70 | I915_WRITE(GEN8_CHICKEN_DCPR_1, | |
71 | I915_READ(GEN8_CHICKEN_DCPR_1) | MASK_WAKEMEM); | |
0f78dee6 MK |
72 | |
73 | /* WaFbcTurnOffFbcWatermark:skl,bxt,kbl */ | |
303d4ea5 MK |
74 | /* WaFbcWakeMemOn:skl,bxt,kbl */ |
75 | I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) | | |
76 | DISP_FBC_WM_DIS | | |
77 | DISP_FBC_MEMORY_WAKE); | |
d1b4eefd MK |
78 | |
79 | /* WaFbcHighMemBwCorruptionAvoidance:skl,bxt,kbl */ | |
80 | I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) | | |
81 | ILK_DPFC_DISABLE_DUMMY0); | |
b033bb6d MK |
82 | } |
83 | ||
84 | static void bxt_init_clock_gating(struct drm_device *dev) | |
85 | { | |
fac5e23e | 86 | struct drm_i915_private *dev_priv = to_i915(dev); |
b033bb6d MK |
87 | |
88 | gen9_init_clock_gating(dev); | |
89 | ||
a7546159 NH |
90 | /* WaDisableSDEUnitClockGating:bxt */ |
91 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
92 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
93 | ||
32608ca2 ID |
94 | /* |
95 | * FIXME: | |
868434c5 | 96 | * GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ applies on 3x6 GT SKUs only. |
32608ca2 | 97 | */ |
32608ca2 | 98 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | |
868434c5 | 99 | GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ); |
d965e7ac ID |
100 | |
101 | /* | |
102 | * Wa: Backlight PWM may stop in the asserted state, causing backlight | |
103 | * to stay fully on. | |
104 | */ | |
105 | if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER)) | |
106 | I915_WRITE(GEN9_CLKGATE_DIS_0, I915_READ(GEN9_CLKGATE_DIS_0) | | |
107 | PWM1_GATING_DIS | PWM2_GATING_DIS); | |
a82abe43 ID |
108 | } |
109 | ||
c921aba8 DV |
110 | static void i915_pineview_get_mem_freq(struct drm_device *dev) |
111 | { | |
fac5e23e | 112 | struct drm_i915_private *dev_priv = to_i915(dev); |
c921aba8 DV |
113 | u32 tmp; |
114 | ||
115 | tmp = I915_READ(CLKCFG); | |
116 | ||
117 | switch (tmp & CLKCFG_FSB_MASK) { | |
118 | case CLKCFG_FSB_533: | |
119 | dev_priv->fsb_freq = 533; /* 133*4 */ | |
120 | break; | |
121 | case CLKCFG_FSB_800: | |
122 | dev_priv->fsb_freq = 800; /* 200*4 */ | |
123 | break; | |
124 | case CLKCFG_FSB_667: | |
125 | dev_priv->fsb_freq = 667; /* 167*4 */ | |
126 | break; | |
127 | case CLKCFG_FSB_400: | |
128 | dev_priv->fsb_freq = 400; /* 100*4 */ | |
129 | break; | |
130 | } | |
131 | ||
132 | switch (tmp & CLKCFG_MEM_MASK) { | |
133 | case CLKCFG_MEM_533: | |
134 | dev_priv->mem_freq = 533; | |
135 | break; | |
136 | case CLKCFG_MEM_667: | |
137 | dev_priv->mem_freq = 667; | |
138 | break; | |
139 | case CLKCFG_MEM_800: | |
140 | dev_priv->mem_freq = 800; | |
141 | break; | |
142 | } | |
143 | ||
144 | /* detect pineview DDR3 setting */ | |
145 | tmp = I915_READ(CSHRDDR3CTL); | |
146 | dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0; | |
147 | } | |
148 | ||
149 | static void i915_ironlake_get_mem_freq(struct drm_device *dev) | |
150 | { | |
fac5e23e | 151 | struct drm_i915_private *dev_priv = to_i915(dev); |
c921aba8 DV |
152 | u16 ddrpll, csipll; |
153 | ||
154 | ddrpll = I915_READ16(DDRMPLL1); | |
155 | csipll = I915_READ16(CSIPLL0); | |
156 | ||
157 | switch (ddrpll & 0xff) { | |
158 | case 0xc: | |
159 | dev_priv->mem_freq = 800; | |
160 | break; | |
161 | case 0x10: | |
162 | dev_priv->mem_freq = 1066; | |
163 | break; | |
164 | case 0x14: | |
165 | dev_priv->mem_freq = 1333; | |
166 | break; | |
167 | case 0x18: | |
168 | dev_priv->mem_freq = 1600; | |
169 | break; | |
170 | default: | |
171 | DRM_DEBUG_DRIVER("unknown memory frequency 0x%02x\n", | |
172 | ddrpll & 0xff); | |
173 | dev_priv->mem_freq = 0; | |
174 | break; | |
175 | } | |
176 | ||
20e4d407 | 177 | dev_priv->ips.r_t = dev_priv->mem_freq; |
c921aba8 DV |
178 | |
179 | switch (csipll & 0x3ff) { | |
180 | case 0x00c: | |
181 | dev_priv->fsb_freq = 3200; | |
182 | break; | |
183 | case 0x00e: | |
184 | dev_priv->fsb_freq = 3733; | |
185 | break; | |
186 | case 0x010: | |
187 | dev_priv->fsb_freq = 4266; | |
188 | break; | |
189 | case 0x012: | |
190 | dev_priv->fsb_freq = 4800; | |
191 | break; | |
192 | case 0x014: | |
193 | dev_priv->fsb_freq = 5333; | |
194 | break; | |
195 | case 0x016: | |
196 | dev_priv->fsb_freq = 5866; | |
197 | break; | |
198 | case 0x018: | |
199 | dev_priv->fsb_freq = 6400; | |
200 | break; | |
201 | default: | |
202 | DRM_DEBUG_DRIVER("unknown fsb frequency 0x%04x\n", | |
203 | csipll & 0x3ff); | |
204 | dev_priv->fsb_freq = 0; | |
205 | break; | |
206 | } | |
207 | ||
208 | if (dev_priv->fsb_freq == 3200) { | |
20e4d407 | 209 | dev_priv->ips.c_m = 0; |
c921aba8 | 210 | } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) { |
20e4d407 | 211 | dev_priv->ips.c_m = 1; |
c921aba8 | 212 | } else { |
20e4d407 | 213 | dev_priv->ips.c_m = 2; |
c921aba8 DV |
214 | } |
215 | } | |
216 | ||
b445e3b0 ED |
217 | static const struct cxsr_latency cxsr_latency_table[] = { |
218 | {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */ | |
219 | {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */ | |
220 | {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */ | |
221 | {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */ | |
222 | {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */ | |
223 | ||
224 | {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */ | |
225 | {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */ | |
226 | {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */ | |
227 | {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */ | |
228 | {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */ | |
229 | ||
230 | {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */ | |
231 | {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */ | |
232 | {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */ | |
233 | {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */ | |
234 | {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */ | |
235 | ||
236 | {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */ | |
237 | {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */ | |
238 | {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */ | |
239 | {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */ | |
240 | {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */ | |
241 | ||
242 | {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */ | |
243 | {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */ | |
244 | {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */ | |
245 | {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */ | |
246 | {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */ | |
247 | ||
248 | {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */ | |
249 | {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */ | |
250 | {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */ | |
251 | {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */ | |
252 | {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */ | |
253 | }; | |
254 | ||
44a655ca TU |
255 | static const struct cxsr_latency *intel_get_cxsr_latency(bool is_desktop, |
256 | bool is_ddr3, | |
b445e3b0 ED |
257 | int fsb, |
258 | int mem) | |
259 | { | |
260 | const struct cxsr_latency *latency; | |
261 | int i; | |
262 | ||
263 | if (fsb == 0 || mem == 0) | |
264 | return NULL; | |
265 | ||
266 | for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) { | |
267 | latency = &cxsr_latency_table[i]; | |
268 | if (is_desktop == latency->is_desktop && | |
269 | is_ddr3 == latency->is_ddr3 && | |
270 | fsb == latency->fsb_freq && mem == latency->mem_freq) | |
271 | return latency; | |
272 | } | |
273 | ||
274 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
275 | ||
276 | return NULL; | |
277 | } | |
278 | ||
fc1ac8de VS |
279 | static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable) |
280 | { | |
281 | u32 val; | |
282 | ||
283 | mutex_lock(&dev_priv->rps.hw_lock); | |
284 | ||
285 | val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); | |
286 | if (enable) | |
287 | val &= ~FORCE_DDR_HIGH_FREQ; | |
288 | else | |
289 | val |= FORCE_DDR_HIGH_FREQ; | |
290 | val &= ~FORCE_DDR_LOW_FREQ; | |
291 | val |= FORCE_DDR_FREQ_REQ_ACK; | |
292 | vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val); | |
293 | ||
294 | if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) & | |
295 | FORCE_DDR_FREQ_REQ_ACK) == 0, 3)) | |
296 | DRM_ERROR("timed out waiting for Punit DDR DVFS request\n"); | |
297 | ||
298 | mutex_unlock(&dev_priv->rps.hw_lock); | |
299 | } | |
300 | ||
cfb41411 VS |
301 | static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable) |
302 | { | |
303 | u32 val; | |
304 | ||
305 | mutex_lock(&dev_priv->rps.hw_lock); | |
306 | ||
307 | val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ); | |
308 | if (enable) | |
309 | val |= DSP_MAXFIFO_PM5_ENABLE; | |
310 | else | |
311 | val &= ~DSP_MAXFIFO_PM5_ENABLE; | |
312 | vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val); | |
313 | ||
314 | mutex_unlock(&dev_priv->rps.hw_lock); | |
315 | } | |
316 | ||
f4998963 VS |
317 | #define FW_WM(value, plane) \ |
318 | (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK) | |
319 | ||
5209b1f4 | 320 | void intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable) |
b445e3b0 | 321 | { |
91c8a326 | 322 | struct drm_device *dev = &dev_priv->drm; |
5209b1f4 | 323 | u32 val; |
b445e3b0 | 324 | |
666a4537 | 325 | if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) { |
5209b1f4 | 326 | I915_WRITE(FW_BLC_SELF_VLV, enable ? FW_CSPWRDWNEN : 0); |
a7a6c498 | 327 | POSTING_READ(FW_BLC_SELF_VLV); |
852eb00d | 328 | dev_priv->wm.vlv.cxsr = enable; |
5209b1f4 ID |
329 | } else if (IS_G4X(dev) || IS_CRESTLINE(dev)) { |
330 | I915_WRITE(FW_BLC_SELF, enable ? FW_BLC_SELF_EN : 0); | |
a7a6c498 | 331 | POSTING_READ(FW_BLC_SELF); |
5209b1f4 ID |
332 | } else if (IS_PINEVIEW(dev)) { |
333 | val = I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN; | |
334 | val |= enable ? PINEVIEW_SELF_REFRESH_EN : 0; | |
335 | I915_WRITE(DSPFW3, val); | |
a7a6c498 | 336 | POSTING_READ(DSPFW3); |
5209b1f4 ID |
337 | } else if (IS_I945G(dev) || IS_I945GM(dev)) { |
338 | val = enable ? _MASKED_BIT_ENABLE(FW_BLC_SELF_EN) : | |
339 | _MASKED_BIT_DISABLE(FW_BLC_SELF_EN); | |
340 | I915_WRITE(FW_BLC_SELF, val); | |
a7a6c498 | 341 | POSTING_READ(FW_BLC_SELF); |
5209b1f4 | 342 | } else if (IS_I915GM(dev)) { |
acb91359 VS |
343 | /* |
344 | * FIXME can't find a bit like this for 915G, and | |
345 | * and yet it does have the related watermark in | |
346 | * FW_BLC_SELF. What's going on? | |
347 | */ | |
5209b1f4 ID |
348 | val = enable ? _MASKED_BIT_ENABLE(INSTPM_SELF_EN) : |
349 | _MASKED_BIT_DISABLE(INSTPM_SELF_EN); | |
350 | I915_WRITE(INSTPM, val); | |
a7a6c498 | 351 | POSTING_READ(INSTPM); |
5209b1f4 ID |
352 | } else { |
353 | return; | |
354 | } | |
b445e3b0 | 355 | |
5209b1f4 ID |
356 | DRM_DEBUG_KMS("memory self-refresh is %s\n", |
357 | enable ? "enabled" : "disabled"); | |
b445e3b0 ED |
358 | } |
359 | ||
fc1ac8de | 360 | |
b445e3b0 ED |
361 | /* |
362 | * Latency for FIFO fetches is dependent on several factors: | |
363 | * - memory configuration (speed, channels) | |
364 | * - chipset | |
365 | * - current MCH state | |
366 | * It can be fairly high in some situations, so here we assume a fairly | |
367 | * pessimal value. It's a tradeoff between extra memory fetches (if we | |
368 | * set this value too high, the FIFO will fetch frequently to stay full) | |
369 | * and power consumption (set it too low to save power and we might see | |
370 | * FIFO underruns and display "flicker"). | |
371 | * | |
372 | * A value of 5us seems to be a good balance; safe for very low end | |
373 | * platforms but not overly aggressive on lower latency configs. | |
374 | */ | |
5aef6003 | 375 | static const int pessimal_latency_ns = 5000; |
b445e3b0 | 376 | |
b5004720 VS |
377 | #define VLV_FIFO_START(dsparb, dsparb2, lo_shift, hi_shift) \ |
378 | ((((dsparb) >> (lo_shift)) & 0xff) | ((((dsparb2) >> (hi_shift)) & 0x1) << 8)) | |
379 | ||
380 | static int vlv_get_fifo_size(struct drm_device *dev, | |
381 | enum pipe pipe, int plane) | |
382 | { | |
fac5e23e | 383 | struct drm_i915_private *dev_priv = to_i915(dev); |
b5004720 VS |
384 | int sprite0_start, sprite1_start, size; |
385 | ||
386 | switch (pipe) { | |
387 | uint32_t dsparb, dsparb2, dsparb3; | |
388 | case PIPE_A: | |
389 | dsparb = I915_READ(DSPARB); | |
390 | dsparb2 = I915_READ(DSPARB2); | |
391 | sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 0, 0); | |
392 | sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 8, 4); | |
393 | break; | |
394 | case PIPE_B: | |
395 | dsparb = I915_READ(DSPARB); | |
396 | dsparb2 = I915_READ(DSPARB2); | |
397 | sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 16, 8); | |
398 | sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 24, 12); | |
399 | break; | |
400 | case PIPE_C: | |
401 | dsparb2 = I915_READ(DSPARB2); | |
402 | dsparb3 = I915_READ(DSPARB3); | |
403 | sprite0_start = VLV_FIFO_START(dsparb3, dsparb2, 0, 16); | |
404 | sprite1_start = VLV_FIFO_START(dsparb3, dsparb2, 8, 20); | |
405 | break; | |
406 | default: | |
407 | return 0; | |
408 | } | |
409 | ||
410 | switch (plane) { | |
411 | case 0: | |
412 | size = sprite0_start; | |
413 | break; | |
414 | case 1: | |
415 | size = sprite1_start - sprite0_start; | |
416 | break; | |
417 | case 2: | |
418 | size = 512 - 1 - sprite1_start; | |
419 | break; | |
420 | default: | |
421 | return 0; | |
422 | } | |
423 | ||
424 | DRM_DEBUG_KMS("Pipe %c %s %c FIFO size: %d\n", | |
425 | pipe_name(pipe), plane == 0 ? "primary" : "sprite", | |
426 | plane == 0 ? plane_name(pipe) : sprite_name(pipe, plane - 1), | |
427 | size); | |
428 | ||
429 | return size; | |
430 | } | |
431 | ||
1fa61106 | 432 | static int i9xx_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 | 433 | { |
fac5e23e | 434 | struct drm_i915_private *dev_priv = to_i915(dev); |
b445e3b0 ED |
435 | uint32_t dsparb = I915_READ(DSPARB); |
436 | int size; | |
437 | ||
438 | size = dsparb & 0x7f; | |
439 | if (plane) | |
440 | size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size; | |
441 | ||
442 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
443 | plane ? "B" : "A", size); | |
444 | ||
445 | return size; | |
446 | } | |
447 | ||
feb56b93 | 448 | static int i830_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 | 449 | { |
fac5e23e | 450 | struct drm_i915_private *dev_priv = to_i915(dev); |
b445e3b0 ED |
451 | uint32_t dsparb = I915_READ(DSPARB); |
452 | int size; | |
453 | ||
454 | size = dsparb & 0x1ff; | |
455 | if (plane) | |
456 | size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size; | |
457 | size >>= 1; /* Convert to cachelines */ | |
458 | ||
459 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
460 | plane ? "B" : "A", size); | |
461 | ||
462 | return size; | |
463 | } | |
464 | ||
1fa61106 | 465 | static int i845_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 | 466 | { |
fac5e23e | 467 | struct drm_i915_private *dev_priv = to_i915(dev); |
b445e3b0 ED |
468 | uint32_t dsparb = I915_READ(DSPARB); |
469 | int size; | |
470 | ||
471 | size = dsparb & 0x7f; | |
472 | size >>= 2; /* Convert to cachelines */ | |
473 | ||
474 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
475 | plane ? "B" : "A", | |
476 | size); | |
477 | ||
478 | return size; | |
479 | } | |
480 | ||
b445e3b0 ED |
481 | /* Pineview has different values for various configs */ |
482 | static const struct intel_watermark_params pineview_display_wm = { | |
e0f0273e VS |
483 | .fifo_size = PINEVIEW_DISPLAY_FIFO, |
484 | .max_wm = PINEVIEW_MAX_WM, | |
485 | .default_wm = PINEVIEW_DFT_WM, | |
486 | .guard_size = PINEVIEW_GUARD_WM, | |
487 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
488 | }; |
489 | static const struct intel_watermark_params pineview_display_hplloff_wm = { | |
e0f0273e VS |
490 | .fifo_size = PINEVIEW_DISPLAY_FIFO, |
491 | .max_wm = PINEVIEW_MAX_WM, | |
492 | .default_wm = PINEVIEW_DFT_HPLLOFF_WM, | |
493 | .guard_size = PINEVIEW_GUARD_WM, | |
494 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
495 | }; |
496 | static const struct intel_watermark_params pineview_cursor_wm = { | |
e0f0273e VS |
497 | .fifo_size = PINEVIEW_CURSOR_FIFO, |
498 | .max_wm = PINEVIEW_CURSOR_MAX_WM, | |
499 | .default_wm = PINEVIEW_CURSOR_DFT_WM, | |
500 | .guard_size = PINEVIEW_CURSOR_GUARD_WM, | |
501 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
502 | }; |
503 | static const struct intel_watermark_params pineview_cursor_hplloff_wm = { | |
e0f0273e VS |
504 | .fifo_size = PINEVIEW_CURSOR_FIFO, |
505 | .max_wm = PINEVIEW_CURSOR_MAX_WM, | |
506 | .default_wm = PINEVIEW_CURSOR_DFT_WM, | |
507 | .guard_size = PINEVIEW_CURSOR_GUARD_WM, | |
508 | .cacheline_size = PINEVIEW_FIFO_LINE_SIZE, | |
b445e3b0 ED |
509 | }; |
510 | static const struct intel_watermark_params g4x_wm_info = { | |
e0f0273e VS |
511 | .fifo_size = G4X_FIFO_SIZE, |
512 | .max_wm = G4X_MAX_WM, | |
513 | .default_wm = G4X_MAX_WM, | |
514 | .guard_size = 2, | |
515 | .cacheline_size = G4X_FIFO_LINE_SIZE, | |
b445e3b0 ED |
516 | }; |
517 | static const struct intel_watermark_params g4x_cursor_wm_info = { | |
e0f0273e VS |
518 | .fifo_size = I965_CURSOR_FIFO, |
519 | .max_wm = I965_CURSOR_MAX_WM, | |
520 | .default_wm = I965_CURSOR_DFT_WM, | |
521 | .guard_size = 2, | |
522 | .cacheline_size = G4X_FIFO_LINE_SIZE, | |
b445e3b0 | 523 | }; |
b445e3b0 | 524 | static const struct intel_watermark_params i965_cursor_wm_info = { |
e0f0273e VS |
525 | .fifo_size = I965_CURSOR_FIFO, |
526 | .max_wm = I965_CURSOR_MAX_WM, | |
527 | .default_wm = I965_CURSOR_DFT_WM, | |
528 | .guard_size = 2, | |
529 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 ED |
530 | }; |
531 | static const struct intel_watermark_params i945_wm_info = { | |
e0f0273e VS |
532 | .fifo_size = I945_FIFO_SIZE, |
533 | .max_wm = I915_MAX_WM, | |
534 | .default_wm = 1, | |
535 | .guard_size = 2, | |
536 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 ED |
537 | }; |
538 | static const struct intel_watermark_params i915_wm_info = { | |
e0f0273e VS |
539 | .fifo_size = I915_FIFO_SIZE, |
540 | .max_wm = I915_MAX_WM, | |
541 | .default_wm = 1, | |
542 | .guard_size = 2, | |
543 | .cacheline_size = I915_FIFO_LINE_SIZE, | |
b445e3b0 | 544 | }; |
9d539105 | 545 | static const struct intel_watermark_params i830_a_wm_info = { |
e0f0273e VS |
546 | .fifo_size = I855GM_FIFO_SIZE, |
547 | .max_wm = I915_MAX_WM, | |
548 | .default_wm = 1, | |
549 | .guard_size = 2, | |
550 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
b445e3b0 | 551 | }; |
9d539105 VS |
552 | static const struct intel_watermark_params i830_bc_wm_info = { |
553 | .fifo_size = I855GM_FIFO_SIZE, | |
554 | .max_wm = I915_MAX_WM/2, | |
555 | .default_wm = 1, | |
556 | .guard_size = 2, | |
557 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
558 | }; | |
feb56b93 | 559 | static const struct intel_watermark_params i845_wm_info = { |
e0f0273e VS |
560 | .fifo_size = I830_FIFO_SIZE, |
561 | .max_wm = I915_MAX_WM, | |
562 | .default_wm = 1, | |
563 | .guard_size = 2, | |
564 | .cacheline_size = I830_FIFO_LINE_SIZE, | |
b445e3b0 ED |
565 | }; |
566 | ||
b445e3b0 ED |
567 | /** |
568 | * intel_calculate_wm - calculate watermark level | |
569 | * @clock_in_khz: pixel clock | |
570 | * @wm: chip FIFO params | |
ac484963 | 571 | * @cpp: bytes per pixel |
b445e3b0 ED |
572 | * @latency_ns: memory latency for the platform |
573 | * | |
574 | * Calculate the watermark level (the level at which the display plane will | |
575 | * start fetching from memory again). Each chip has a different display | |
576 | * FIFO size and allocation, so the caller needs to figure that out and pass | |
577 | * in the correct intel_watermark_params structure. | |
578 | * | |
579 | * As the pixel clock runs, the FIFO will be drained at a rate that depends | |
580 | * on the pixel size. When it reaches the watermark level, it'll start | |
581 | * fetching FIFO line sized based chunks from memory until the FIFO fills | |
582 | * past the watermark point. If the FIFO drains completely, a FIFO underrun | |
583 | * will occur, and a display engine hang could result. | |
584 | */ | |
585 | static unsigned long intel_calculate_wm(unsigned long clock_in_khz, | |
586 | const struct intel_watermark_params *wm, | |
ac484963 | 587 | int fifo_size, int cpp, |
b445e3b0 ED |
588 | unsigned long latency_ns) |
589 | { | |
590 | long entries_required, wm_size; | |
591 | ||
592 | /* | |
593 | * Note: we need to make sure we don't overflow for various clock & | |
594 | * latency values. | |
595 | * clocks go from a few thousand to several hundred thousand. | |
596 | * latency is usually a few thousand | |
597 | */ | |
ac484963 | 598 | entries_required = ((clock_in_khz / 1000) * cpp * latency_ns) / |
b445e3b0 ED |
599 | 1000; |
600 | entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size); | |
601 | ||
602 | DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required); | |
603 | ||
604 | wm_size = fifo_size - (entries_required + wm->guard_size); | |
605 | ||
606 | DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size); | |
607 | ||
608 | /* Don't promote wm_size to unsigned... */ | |
609 | if (wm_size > (long)wm->max_wm) | |
610 | wm_size = wm->max_wm; | |
611 | if (wm_size <= 0) | |
612 | wm_size = wm->default_wm; | |
d6feb196 VS |
613 | |
614 | /* | |
615 | * Bspec seems to indicate that the value shouldn't be lower than | |
616 | * 'burst size + 1'. Certainly 830 is quite unhappy with low values. | |
617 | * Lets go for 8 which is the burst size since certain platforms | |
618 | * already use a hardcoded 8 (which is what the spec says should be | |
619 | * done). | |
620 | */ | |
621 | if (wm_size <= 8) | |
622 | wm_size = 8; | |
623 | ||
b445e3b0 ED |
624 | return wm_size; |
625 | } | |
626 | ||
627 | static struct drm_crtc *single_enabled_crtc(struct drm_device *dev) | |
628 | { | |
629 | struct drm_crtc *crtc, *enabled = NULL; | |
630 | ||
70e1e0ec | 631 | for_each_crtc(dev, crtc) { |
3490ea5d | 632 | if (intel_crtc_active(crtc)) { |
b445e3b0 ED |
633 | if (enabled) |
634 | return NULL; | |
635 | enabled = crtc; | |
636 | } | |
637 | } | |
638 | ||
639 | return enabled; | |
640 | } | |
641 | ||
46ba614c | 642 | static void pineview_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 643 | { |
46ba614c | 644 | struct drm_device *dev = unused_crtc->dev; |
fac5e23e | 645 | struct drm_i915_private *dev_priv = to_i915(dev); |
b445e3b0 ED |
646 | struct drm_crtc *crtc; |
647 | const struct cxsr_latency *latency; | |
648 | u32 reg; | |
649 | unsigned long wm; | |
650 | ||
651 | latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3, | |
652 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
653 | if (!latency) { | |
654 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
5209b1f4 | 655 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
656 | return; |
657 | } | |
658 | ||
659 | crtc = single_enabled_crtc(dev); | |
660 | if (crtc) { | |
7c5f93b0 | 661 | const struct drm_display_mode *adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
ac484963 | 662 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
7c5f93b0 | 663 | int clock = adjusted_mode->crtc_clock; |
b445e3b0 ED |
664 | |
665 | /* Display SR */ | |
666 | wm = intel_calculate_wm(clock, &pineview_display_wm, | |
667 | pineview_display_wm.fifo_size, | |
ac484963 | 668 | cpp, latency->display_sr); |
b445e3b0 ED |
669 | reg = I915_READ(DSPFW1); |
670 | reg &= ~DSPFW_SR_MASK; | |
f4998963 | 671 | reg |= FW_WM(wm, SR); |
b445e3b0 ED |
672 | I915_WRITE(DSPFW1, reg); |
673 | DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg); | |
674 | ||
675 | /* cursor SR */ | |
676 | wm = intel_calculate_wm(clock, &pineview_cursor_wm, | |
677 | pineview_display_wm.fifo_size, | |
ac484963 | 678 | cpp, latency->cursor_sr); |
b445e3b0 ED |
679 | reg = I915_READ(DSPFW3); |
680 | reg &= ~DSPFW_CURSOR_SR_MASK; | |
f4998963 | 681 | reg |= FW_WM(wm, CURSOR_SR); |
b445e3b0 ED |
682 | I915_WRITE(DSPFW3, reg); |
683 | ||
684 | /* Display HPLL off SR */ | |
685 | wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm, | |
686 | pineview_display_hplloff_wm.fifo_size, | |
ac484963 | 687 | cpp, latency->display_hpll_disable); |
b445e3b0 ED |
688 | reg = I915_READ(DSPFW3); |
689 | reg &= ~DSPFW_HPLL_SR_MASK; | |
f4998963 | 690 | reg |= FW_WM(wm, HPLL_SR); |
b445e3b0 ED |
691 | I915_WRITE(DSPFW3, reg); |
692 | ||
693 | /* cursor HPLL off SR */ | |
694 | wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm, | |
695 | pineview_display_hplloff_wm.fifo_size, | |
ac484963 | 696 | cpp, latency->cursor_hpll_disable); |
b445e3b0 ED |
697 | reg = I915_READ(DSPFW3); |
698 | reg &= ~DSPFW_HPLL_CURSOR_MASK; | |
f4998963 | 699 | reg |= FW_WM(wm, HPLL_CURSOR); |
b445e3b0 ED |
700 | I915_WRITE(DSPFW3, reg); |
701 | DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg); | |
702 | ||
5209b1f4 | 703 | intel_set_memory_cxsr(dev_priv, true); |
b445e3b0 | 704 | } else { |
5209b1f4 | 705 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
706 | } |
707 | } | |
708 | ||
709 | static bool g4x_compute_wm0(struct drm_device *dev, | |
710 | int plane, | |
711 | const struct intel_watermark_params *display, | |
712 | int display_latency_ns, | |
713 | const struct intel_watermark_params *cursor, | |
714 | int cursor_latency_ns, | |
715 | int *plane_wm, | |
716 | int *cursor_wm) | |
717 | { | |
718 | struct drm_crtc *crtc; | |
4fe8590a | 719 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 720 | int htotal, hdisplay, clock, cpp; |
b445e3b0 ED |
721 | int line_time_us, line_count; |
722 | int entries, tlb_miss; | |
723 | ||
724 | crtc = intel_get_crtc_for_plane(dev, plane); | |
3490ea5d | 725 | if (!intel_crtc_active(crtc)) { |
b445e3b0 ED |
726 | *cursor_wm = cursor->guard_size; |
727 | *plane_wm = display->guard_size; | |
728 | return false; | |
729 | } | |
730 | ||
6e3c9717 | 731 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 732 | clock = adjusted_mode->crtc_clock; |
fec8cba3 | 733 | htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 734 | hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
ac484963 | 735 | cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b445e3b0 ED |
736 | |
737 | /* Use the small buffer method to calculate plane watermark */ | |
ac484963 | 738 | entries = ((clock * cpp / 1000) * display_latency_ns) / 1000; |
b445e3b0 ED |
739 | tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8; |
740 | if (tlb_miss > 0) | |
741 | entries += tlb_miss; | |
742 | entries = DIV_ROUND_UP(entries, display->cacheline_size); | |
743 | *plane_wm = entries + display->guard_size; | |
744 | if (*plane_wm > (int)display->max_wm) | |
745 | *plane_wm = display->max_wm; | |
746 | ||
747 | /* Use the large buffer method to calculate cursor watermark */ | |
922044c9 | 748 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 | 749 | line_count = (cursor_latency_ns / line_time_us + 1000) / 1000; |
ac484963 | 750 | entries = line_count * crtc->cursor->state->crtc_w * cpp; |
b445e3b0 ED |
751 | tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8; |
752 | if (tlb_miss > 0) | |
753 | entries += tlb_miss; | |
754 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); | |
755 | *cursor_wm = entries + cursor->guard_size; | |
756 | if (*cursor_wm > (int)cursor->max_wm) | |
757 | *cursor_wm = (int)cursor->max_wm; | |
758 | ||
759 | return true; | |
760 | } | |
761 | ||
762 | /* | |
763 | * Check the wm result. | |
764 | * | |
765 | * If any calculated watermark values is larger than the maximum value that | |
766 | * can be programmed into the associated watermark register, that watermark | |
767 | * must be disabled. | |
768 | */ | |
769 | static bool g4x_check_srwm(struct drm_device *dev, | |
770 | int display_wm, int cursor_wm, | |
771 | const struct intel_watermark_params *display, | |
772 | const struct intel_watermark_params *cursor) | |
773 | { | |
774 | DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n", | |
775 | display_wm, cursor_wm); | |
776 | ||
777 | if (display_wm > display->max_wm) { | |
ae9400ca | 778 | DRM_DEBUG_KMS("display watermark is too large(%d/%u), disabling\n", |
b445e3b0 ED |
779 | display_wm, display->max_wm); |
780 | return false; | |
781 | } | |
782 | ||
783 | if (cursor_wm > cursor->max_wm) { | |
ae9400ca | 784 | DRM_DEBUG_KMS("cursor watermark is too large(%d/%u), disabling\n", |
b445e3b0 ED |
785 | cursor_wm, cursor->max_wm); |
786 | return false; | |
787 | } | |
788 | ||
789 | if (!(display_wm || cursor_wm)) { | |
790 | DRM_DEBUG_KMS("SR latency is 0, disabling\n"); | |
791 | return false; | |
792 | } | |
793 | ||
794 | return true; | |
795 | } | |
796 | ||
797 | static bool g4x_compute_srwm(struct drm_device *dev, | |
798 | int plane, | |
799 | int latency_ns, | |
800 | const struct intel_watermark_params *display, | |
801 | const struct intel_watermark_params *cursor, | |
802 | int *display_wm, int *cursor_wm) | |
803 | { | |
804 | struct drm_crtc *crtc; | |
4fe8590a | 805 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 806 | int hdisplay, htotal, cpp, clock; |
b445e3b0 ED |
807 | unsigned long line_time_us; |
808 | int line_count, line_size; | |
809 | int small, large; | |
810 | int entries; | |
811 | ||
812 | if (!latency_ns) { | |
813 | *display_wm = *cursor_wm = 0; | |
814 | return false; | |
815 | } | |
816 | ||
817 | crtc = intel_get_crtc_for_plane(dev, plane); | |
6e3c9717 | 818 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 819 | clock = adjusted_mode->crtc_clock; |
fec8cba3 | 820 | htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 821 | hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
ac484963 | 822 | cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b445e3b0 | 823 | |
922044c9 | 824 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 | 825 | line_count = (latency_ns / line_time_us + 1000) / 1000; |
ac484963 | 826 | line_size = hdisplay * cpp; |
b445e3b0 ED |
827 | |
828 | /* Use the minimum of the small and large buffer method for primary */ | |
ac484963 | 829 | small = ((clock * cpp / 1000) * latency_ns) / 1000; |
b445e3b0 ED |
830 | large = line_count * line_size; |
831 | ||
832 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); | |
833 | *display_wm = entries + display->guard_size; | |
834 | ||
835 | /* calculate the self-refresh watermark for display cursor */ | |
ac484963 | 836 | entries = line_count * cpp * crtc->cursor->state->crtc_w; |
b445e3b0 ED |
837 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); |
838 | *cursor_wm = entries + cursor->guard_size; | |
839 | ||
840 | return g4x_check_srwm(dev, | |
841 | *display_wm, *cursor_wm, | |
842 | display, cursor); | |
843 | } | |
844 | ||
15665979 VS |
845 | #define FW_WM_VLV(value, plane) \ |
846 | (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK_VLV) | |
847 | ||
0018fda1 VS |
848 | static void vlv_write_wm_values(struct intel_crtc *crtc, |
849 | const struct vlv_wm_values *wm) | |
850 | { | |
851 | struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); | |
852 | enum pipe pipe = crtc->pipe; | |
853 | ||
854 | I915_WRITE(VLV_DDL(pipe), | |
855 | (wm->ddl[pipe].cursor << DDL_CURSOR_SHIFT) | | |
856 | (wm->ddl[pipe].sprite[1] << DDL_SPRITE_SHIFT(1)) | | |
857 | (wm->ddl[pipe].sprite[0] << DDL_SPRITE_SHIFT(0)) | | |
858 | (wm->ddl[pipe].primary << DDL_PLANE_SHIFT)); | |
859 | ||
ae80152d | 860 | I915_WRITE(DSPFW1, |
15665979 VS |
861 | FW_WM(wm->sr.plane, SR) | |
862 | FW_WM(wm->pipe[PIPE_B].cursor, CURSORB) | | |
863 | FW_WM_VLV(wm->pipe[PIPE_B].primary, PLANEB) | | |
864 | FW_WM_VLV(wm->pipe[PIPE_A].primary, PLANEA)); | |
ae80152d | 865 | I915_WRITE(DSPFW2, |
15665979 VS |
866 | FW_WM_VLV(wm->pipe[PIPE_A].sprite[1], SPRITEB) | |
867 | FW_WM(wm->pipe[PIPE_A].cursor, CURSORA) | | |
868 | FW_WM_VLV(wm->pipe[PIPE_A].sprite[0], SPRITEA)); | |
ae80152d | 869 | I915_WRITE(DSPFW3, |
15665979 | 870 | FW_WM(wm->sr.cursor, CURSOR_SR)); |
ae80152d VS |
871 | |
872 | if (IS_CHERRYVIEW(dev_priv)) { | |
873 | I915_WRITE(DSPFW7_CHV, | |
15665979 VS |
874 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[1], SPRITED) | |
875 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[0], SPRITEC)); | |
ae80152d | 876 | I915_WRITE(DSPFW8_CHV, |
15665979 VS |
877 | FW_WM_VLV(wm->pipe[PIPE_C].sprite[1], SPRITEF) | |
878 | FW_WM_VLV(wm->pipe[PIPE_C].sprite[0], SPRITEE)); | |
ae80152d | 879 | I915_WRITE(DSPFW9_CHV, |
15665979 VS |
880 | FW_WM_VLV(wm->pipe[PIPE_C].primary, PLANEC) | |
881 | FW_WM(wm->pipe[PIPE_C].cursor, CURSORC)); | |
ae80152d | 882 | I915_WRITE(DSPHOWM, |
15665979 VS |
883 | FW_WM(wm->sr.plane >> 9, SR_HI) | |
884 | FW_WM(wm->pipe[PIPE_C].sprite[1] >> 8, SPRITEF_HI) | | |
885 | FW_WM(wm->pipe[PIPE_C].sprite[0] >> 8, SPRITEE_HI) | | |
886 | FW_WM(wm->pipe[PIPE_C].primary >> 8, PLANEC_HI) | | |
887 | FW_WM(wm->pipe[PIPE_B].sprite[1] >> 8, SPRITED_HI) | | |
888 | FW_WM(wm->pipe[PIPE_B].sprite[0] >> 8, SPRITEC_HI) | | |
889 | FW_WM(wm->pipe[PIPE_B].primary >> 8, PLANEB_HI) | | |
890 | FW_WM(wm->pipe[PIPE_A].sprite[1] >> 8, SPRITEB_HI) | | |
891 | FW_WM(wm->pipe[PIPE_A].sprite[0] >> 8, SPRITEA_HI) | | |
892 | FW_WM(wm->pipe[PIPE_A].primary >> 8, PLANEA_HI)); | |
ae80152d VS |
893 | } else { |
894 | I915_WRITE(DSPFW7, | |
15665979 VS |
895 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[1], SPRITED) | |
896 | FW_WM_VLV(wm->pipe[PIPE_B].sprite[0], SPRITEC)); | |
ae80152d | 897 | I915_WRITE(DSPHOWM, |
15665979 VS |
898 | FW_WM(wm->sr.plane >> 9, SR_HI) | |
899 | FW_WM(wm->pipe[PIPE_B].sprite[1] >> 8, SPRITED_HI) | | |
900 | FW_WM(wm->pipe[PIPE_B].sprite[0] >> 8, SPRITEC_HI) | | |
901 | FW_WM(wm->pipe[PIPE_B].primary >> 8, PLANEB_HI) | | |
902 | FW_WM(wm->pipe[PIPE_A].sprite[1] >> 8, SPRITEB_HI) | | |
903 | FW_WM(wm->pipe[PIPE_A].sprite[0] >> 8, SPRITEA_HI) | | |
904 | FW_WM(wm->pipe[PIPE_A].primary >> 8, PLANEA_HI)); | |
ae80152d VS |
905 | } |
906 | ||
2cb389b7 VS |
907 | /* zero (unused) WM1 watermarks */ |
908 | I915_WRITE(DSPFW4, 0); | |
909 | I915_WRITE(DSPFW5, 0); | |
910 | I915_WRITE(DSPFW6, 0); | |
911 | I915_WRITE(DSPHOWM1, 0); | |
912 | ||
ae80152d | 913 | POSTING_READ(DSPFW1); |
0018fda1 VS |
914 | } |
915 | ||
15665979 VS |
916 | #undef FW_WM_VLV |
917 | ||
6eb1a681 VS |
918 | enum vlv_wm_level { |
919 | VLV_WM_LEVEL_PM2, | |
920 | VLV_WM_LEVEL_PM5, | |
921 | VLV_WM_LEVEL_DDR_DVFS, | |
6eb1a681 VS |
922 | }; |
923 | ||
262cd2e1 VS |
924 | /* latency must be in 0.1us units. */ |
925 | static unsigned int vlv_wm_method2(unsigned int pixel_rate, | |
926 | unsigned int pipe_htotal, | |
927 | unsigned int horiz_pixels, | |
ac484963 | 928 | unsigned int cpp, |
262cd2e1 VS |
929 | unsigned int latency) |
930 | { | |
931 | unsigned int ret; | |
932 | ||
933 | ret = (latency * pixel_rate) / (pipe_htotal * 10000); | |
ac484963 | 934 | ret = (ret + 1) * horiz_pixels * cpp; |
262cd2e1 VS |
935 | ret = DIV_ROUND_UP(ret, 64); |
936 | ||
937 | return ret; | |
938 | } | |
939 | ||
940 | static void vlv_setup_wm_latency(struct drm_device *dev) | |
941 | { | |
fac5e23e | 942 | struct drm_i915_private *dev_priv = to_i915(dev); |
262cd2e1 VS |
943 | |
944 | /* all latencies in usec */ | |
945 | dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM2] = 3; | |
946 | ||
58590c14 VS |
947 | dev_priv->wm.max_level = VLV_WM_LEVEL_PM2; |
948 | ||
262cd2e1 VS |
949 | if (IS_CHERRYVIEW(dev_priv)) { |
950 | dev_priv->wm.pri_latency[VLV_WM_LEVEL_PM5] = 12; | |
951 | dev_priv->wm.pri_latency[VLV_WM_LEVEL_DDR_DVFS] = 33; | |
58590c14 VS |
952 | |
953 | dev_priv->wm.max_level = VLV_WM_LEVEL_DDR_DVFS; | |
262cd2e1 VS |
954 | } |
955 | } | |
956 | ||
957 | static uint16_t vlv_compute_wm_level(struct intel_plane *plane, | |
958 | struct intel_crtc *crtc, | |
959 | const struct intel_plane_state *state, | |
960 | int level) | |
961 | { | |
962 | struct drm_i915_private *dev_priv = to_i915(plane->base.dev); | |
ac484963 | 963 | int clock, htotal, cpp, width, wm; |
262cd2e1 VS |
964 | |
965 | if (dev_priv->wm.pri_latency[level] == 0) | |
966 | return USHRT_MAX; | |
967 | ||
936e71e3 | 968 | if (!state->base.visible) |
262cd2e1 VS |
969 | return 0; |
970 | ||
ac484963 | 971 | cpp = drm_format_plane_cpp(state->base.fb->pixel_format, 0); |
262cd2e1 VS |
972 | clock = crtc->config->base.adjusted_mode.crtc_clock; |
973 | htotal = crtc->config->base.adjusted_mode.crtc_htotal; | |
974 | width = crtc->config->pipe_src_w; | |
975 | if (WARN_ON(htotal == 0)) | |
976 | htotal = 1; | |
977 | ||
978 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) { | |
979 | /* | |
980 | * FIXME the formula gives values that are | |
981 | * too big for the cursor FIFO, and hence we | |
982 | * would never be able to use cursors. For | |
983 | * now just hardcode the watermark. | |
984 | */ | |
985 | wm = 63; | |
986 | } else { | |
ac484963 | 987 | wm = vlv_wm_method2(clock, htotal, width, cpp, |
262cd2e1 VS |
988 | dev_priv->wm.pri_latency[level] * 10); |
989 | } | |
990 | ||
991 | return min_t(int, wm, USHRT_MAX); | |
992 | } | |
993 | ||
54f1b6e1 VS |
994 | static void vlv_compute_fifo(struct intel_crtc *crtc) |
995 | { | |
996 | struct drm_device *dev = crtc->base.dev; | |
997 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
998 | struct intel_plane *plane; | |
999 | unsigned int total_rate = 0; | |
1000 | const int fifo_size = 512 - 1; | |
1001 | int fifo_extra, fifo_left = fifo_size; | |
1002 | ||
1003 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1004 | struct intel_plane_state *state = | |
1005 | to_intel_plane_state(plane->base.state); | |
1006 | ||
1007 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) | |
1008 | continue; | |
1009 | ||
936e71e3 | 1010 | if (state->base.visible) { |
54f1b6e1 VS |
1011 | wm_state->num_active_planes++; |
1012 | total_rate += drm_format_plane_cpp(state->base.fb->pixel_format, 0); | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1017 | struct intel_plane_state *state = | |
1018 | to_intel_plane_state(plane->base.state); | |
1019 | unsigned int rate; | |
1020 | ||
1021 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) { | |
1022 | plane->wm.fifo_size = 63; | |
1023 | continue; | |
1024 | } | |
1025 | ||
936e71e3 | 1026 | if (!state->base.visible) { |
54f1b6e1 VS |
1027 | plane->wm.fifo_size = 0; |
1028 | continue; | |
1029 | } | |
1030 | ||
1031 | rate = drm_format_plane_cpp(state->base.fb->pixel_format, 0); | |
1032 | plane->wm.fifo_size = fifo_size * rate / total_rate; | |
1033 | fifo_left -= plane->wm.fifo_size; | |
1034 | } | |
1035 | ||
1036 | fifo_extra = DIV_ROUND_UP(fifo_left, wm_state->num_active_planes ?: 1); | |
1037 | ||
1038 | /* spread the remainder evenly */ | |
1039 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1040 | int plane_extra; | |
1041 | ||
1042 | if (fifo_left == 0) | |
1043 | break; | |
1044 | ||
1045 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) | |
1046 | continue; | |
1047 | ||
1048 | /* give it all to the first plane if none are active */ | |
1049 | if (plane->wm.fifo_size == 0 && | |
1050 | wm_state->num_active_planes) | |
1051 | continue; | |
1052 | ||
1053 | plane_extra = min(fifo_extra, fifo_left); | |
1054 | plane->wm.fifo_size += plane_extra; | |
1055 | fifo_left -= plane_extra; | |
1056 | } | |
1057 | ||
1058 | WARN_ON(fifo_left != 0); | |
1059 | } | |
1060 | ||
262cd2e1 VS |
1061 | static void vlv_invert_wms(struct intel_crtc *crtc) |
1062 | { | |
1063 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1064 | int level; | |
1065 | ||
1066 | for (level = 0; level < wm_state->num_levels; level++) { | |
1067 | struct drm_device *dev = crtc->base.dev; | |
1068 | const int sr_fifo_size = INTEL_INFO(dev)->num_pipes * 512 - 1; | |
1069 | struct intel_plane *plane; | |
1070 | ||
1071 | wm_state->sr[level].plane = sr_fifo_size - wm_state->sr[level].plane; | |
1072 | wm_state->sr[level].cursor = 63 - wm_state->sr[level].cursor; | |
1073 | ||
1074 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1075 | switch (plane->base.type) { | |
1076 | int sprite; | |
1077 | case DRM_PLANE_TYPE_CURSOR: | |
1078 | wm_state->wm[level].cursor = plane->wm.fifo_size - | |
1079 | wm_state->wm[level].cursor; | |
1080 | break; | |
1081 | case DRM_PLANE_TYPE_PRIMARY: | |
1082 | wm_state->wm[level].primary = plane->wm.fifo_size - | |
1083 | wm_state->wm[level].primary; | |
1084 | break; | |
1085 | case DRM_PLANE_TYPE_OVERLAY: | |
1086 | sprite = plane->plane; | |
1087 | wm_state->wm[level].sprite[sprite] = plane->wm.fifo_size - | |
1088 | wm_state->wm[level].sprite[sprite]; | |
1089 | break; | |
1090 | } | |
1091 | } | |
1092 | } | |
1093 | } | |
1094 | ||
26e1fe4f | 1095 | static void vlv_compute_wm(struct intel_crtc *crtc) |
262cd2e1 VS |
1096 | { |
1097 | struct drm_device *dev = crtc->base.dev; | |
1098 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1099 | struct intel_plane *plane; | |
1100 | int sr_fifo_size = INTEL_INFO(dev)->num_pipes * 512 - 1; | |
1101 | int level; | |
1102 | ||
1103 | memset(wm_state, 0, sizeof(*wm_state)); | |
1104 | ||
852eb00d | 1105 | wm_state->cxsr = crtc->pipe != PIPE_C && crtc->wm.cxsr_allowed; |
58590c14 | 1106 | wm_state->num_levels = to_i915(dev)->wm.max_level + 1; |
262cd2e1 VS |
1107 | |
1108 | wm_state->num_active_planes = 0; | |
262cd2e1 | 1109 | |
54f1b6e1 | 1110 | vlv_compute_fifo(crtc); |
262cd2e1 VS |
1111 | |
1112 | if (wm_state->num_active_planes != 1) | |
1113 | wm_state->cxsr = false; | |
1114 | ||
1115 | if (wm_state->cxsr) { | |
1116 | for (level = 0; level < wm_state->num_levels; level++) { | |
1117 | wm_state->sr[level].plane = sr_fifo_size; | |
1118 | wm_state->sr[level].cursor = 63; | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1123 | struct intel_plane_state *state = | |
1124 | to_intel_plane_state(plane->base.state); | |
1125 | ||
936e71e3 | 1126 | if (!state->base.visible) |
262cd2e1 VS |
1127 | continue; |
1128 | ||
1129 | /* normal watermarks */ | |
1130 | for (level = 0; level < wm_state->num_levels; level++) { | |
1131 | int wm = vlv_compute_wm_level(plane, crtc, state, level); | |
1132 | int max_wm = plane->base.type == DRM_PLANE_TYPE_CURSOR ? 63 : 511; | |
1133 | ||
1134 | /* hack */ | |
1135 | if (WARN_ON(level == 0 && wm > max_wm)) | |
1136 | wm = max_wm; | |
1137 | ||
1138 | if (wm > plane->wm.fifo_size) | |
1139 | break; | |
1140 | ||
1141 | switch (plane->base.type) { | |
1142 | int sprite; | |
1143 | case DRM_PLANE_TYPE_CURSOR: | |
1144 | wm_state->wm[level].cursor = wm; | |
1145 | break; | |
1146 | case DRM_PLANE_TYPE_PRIMARY: | |
1147 | wm_state->wm[level].primary = wm; | |
1148 | break; | |
1149 | case DRM_PLANE_TYPE_OVERLAY: | |
1150 | sprite = plane->plane; | |
1151 | wm_state->wm[level].sprite[sprite] = wm; | |
1152 | break; | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | wm_state->num_levels = level; | |
1157 | ||
1158 | if (!wm_state->cxsr) | |
1159 | continue; | |
1160 | ||
1161 | /* maxfifo watermarks */ | |
1162 | switch (plane->base.type) { | |
1163 | int sprite, level; | |
1164 | case DRM_PLANE_TYPE_CURSOR: | |
1165 | for (level = 0; level < wm_state->num_levels; level++) | |
1166 | wm_state->sr[level].cursor = | |
5a37ed0a | 1167 | wm_state->wm[level].cursor; |
262cd2e1 VS |
1168 | break; |
1169 | case DRM_PLANE_TYPE_PRIMARY: | |
1170 | for (level = 0; level < wm_state->num_levels; level++) | |
1171 | wm_state->sr[level].plane = | |
1172 | min(wm_state->sr[level].plane, | |
1173 | wm_state->wm[level].primary); | |
1174 | break; | |
1175 | case DRM_PLANE_TYPE_OVERLAY: | |
1176 | sprite = plane->plane; | |
1177 | for (level = 0; level < wm_state->num_levels; level++) | |
1178 | wm_state->sr[level].plane = | |
1179 | min(wm_state->sr[level].plane, | |
1180 | wm_state->wm[level].sprite[sprite]); | |
1181 | break; | |
1182 | } | |
1183 | } | |
1184 | ||
1185 | /* clear any (partially) filled invalid levels */ | |
58590c14 | 1186 | for (level = wm_state->num_levels; level < to_i915(dev)->wm.max_level + 1; level++) { |
262cd2e1 VS |
1187 | memset(&wm_state->wm[level], 0, sizeof(wm_state->wm[level])); |
1188 | memset(&wm_state->sr[level], 0, sizeof(wm_state->sr[level])); | |
1189 | } | |
1190 | ||
1191 | vlv_invert_wms(crtc); | |
1192 | } | |
1193 | ||
54f1b6e1 VS |
1194 | #define VLV_FIFO(plane, value) \ |
1195 | (((value) << DSPARB_ ## plane ## _SHIFT_VLV) & DSPARB_ ## plane ## _MASK_VLV) | |
1196 | ||
1197 | static void vlv_pipe_set_fifo_size(struct intel_crtc *crtc) | |
1198 | { | |
1199 | struct drm_device *dev = crtc->base.dev; | |
1200 | struct drm_i915_private *dev_priv = to_i915(dev); | |
1201 | struct intel_plane *plane; | |
1202 | int sprite0_start = 0, sprite1_start = 0, fifo_size = 0; | |
1203 | ||
1204 | for_each_intel_plane_on_crtc(dev, crtc, plane) { | |
1205 | if (plane->base.type == DRM_PLANE_TYPE_CURSOR) { | |
1206 | WARN_ON(plane->wm.fifo_size != 63); | |
1207 | continue; | |
1208 | } | |
1209 | ||
1210 | if (plane->base.type == DRM_PLANE_TYPE_PRIMARY) | |
1211 | sprite0_start = plane->wm.fifo_size; | |
1212 | else if (plane->plane == 0) | |
1213 | sprite1_start = sprite0_start + plane->wm.fifo_size; | |
1214 | else | |
1215 | fifo_size = sprite1_start + plane->wm.fifo_size; | |
1216 | } | |
1217 | ||
1218 | WARN_ON(fifo_size != 512 - 1); | |
1219 | ||
1220 | DRM_DEBUG_KMS("Pipe %c FIFO split %d / %d / %d\n", | |
1221 | pipe_name(crtc->pipe), sprite0_start, | |
1222 | sprite1_start, fifo_size); | |
1223 | ||
1224 | switch (crtc->pipe) { | |
1225 | uint32_t dsparb, dsparb2, dsparb3; | |
1226 | case PIPE_A: | |
1227 | dsparb = I915_READ(DSPARB); | |
1228 | dsparb2 = I915_READ(DSPARB2); | |
1229 | ||
1230 | dsparb &= ~(VLV_FIFO(SPRITEA, 0xff) | | |
1231 | VLV_FIFO(SPRITEB, 0xff)); | |
1232 | dsparb |= (VLV_FIFO(SPRITEA, sprite0_start) | | |
1233 | VLV_FIFO(SPRITEB, sprite1_start)); | |
1234 | ||
1235 | dsparb2 &= ~(VLV_FIFO(SPRITEA_HI, 0x1) | | |
1236 | VLV_FIFO(SPRITEB_HI, 0x1)); | |
1237 | dsparb2 |= (VLV_FIFO(SPRITEA_HI, sprite0_start >> 8) | | |
1238 | VLV_FIFO(SPRITEB_HI, sprite1_start >> 8)); | |
1239 | ||
1240 | I915_WRITE(DSPARB, dsparb); | |
1241 | I915_WRITE(DSPARB2, dsparb2); | |
1242 | break; | |
1243 | case PIPE_B: | |
1244 | dsparb = I915_READ(DSPARB); | |
1245 | dsparb2 = I915_READ(DSPARB2); | |
1246 | ||
1247 | dsparb &= ~(VLV_FIFO(SPRITEC, 0xff) | | |
1248 | VLV_FIFO(SPRITED, 0xff)); | |
1249 | dsparb |= (VLV_FIFO(SPRITEC, sprite0_start) | | |
1250 | VLV_FIFO(SPRITED, sprite1_start)); | |
1251 | ||
1252 | dsparb2 &= ~(VLV_FIFO(SPRITEC_HI, 0xff) | | |
1253 | VLV_FIFO(SPRITED_HI, 0xff)); | |
1254 | dsparb2 |= (VLV_FIFO(SPRITEC_HI, sprite0_start >> 8) | | |
1255 | VLV_FIFO(SPRITED_HI, sprite1_start >> 8)); | |
1256 | ||
1257 | I915_WRITE(DSPARB, dsparb); | |
1258 | I915_WRITE(DSPARB2, dsparb2); | |
1259 | break; | |
1260 | case PIPE_C: | |
1261 | dsparb3 = I915_READ(DSPARB3); | |
1262 | dsparb2 = I915_READ(DSPARB2); | |
1263 | ||
1264 | dsparb3 &= ~(VLV_FIFO(SPRITEE, 0xff) | | |
1265 | VLV_FIFO(SPRITEF, 0xff)); | |
1266 | dsparb3 |= (VLV_FIFO(SPRITEE, sprite0_start) | | |
1267 | VLV_FIFO(SPRITEF, sprite1_start)); | |
1268 | ||
1269 | dsparb2 &= ~(VLV_FIFO(SPRITEE_HI, 0xff) | | |
1270 | VLV_FIFO(SPRITEF_HI, 0xff)); | |
1271 | dsparb2 |= (VLV_FIFO(SPRITEE_HI, sprite0_start >> 8) | | |
1272 | VLV_FIFO(SPRITEF_HI, sprite1_start >> 8)); | |
1273 | ||
1274 | I915_WRITE(DSPARB3, dsparb3); | |
1275 | I915_WRITE(DSPARB2, dsparb2); | |
1276 | break; | |
1277 | default: | |
1278 | break; | |
1279 | } | |
1280 | } | |
1281 | ||
1282 | #undef VLV_FIFO | |
1283 | ||
262cd2e1 VS |
1284 | static void vlv_merge_wm(struct drm_device *dev, |
1285 | struct vlv_wm_values *wm) | |
1286 | { | |
1287 | struct intel_crtc *crtc; | |
1288 | int num_active_crtcs = 0; | |
1289 | ||
58590c14 | 1290 | wm->level = to_i915(dev)->wm.max_level; |
262cd2e1 VS |
1291 | wm->cxsr = true; |
1292 | ||
1293 | for_each_intel_crtc(dev, crtc) { | |
1294 | const struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1295 | ||
1296 | if (!crtc->active) | |
1297 | continue; | |
1298 | ||
1299 | if (!wm_state->cxsr) | |
1300 | wm->cxsr = false; | |
1301 | ||
1302 | num_active_crtcs++; | |
1303 | wm->level = min_t(int, wm->level, wm_state->num_levels - 1); | |
1304 | } | |
1305 | ||
1306 | if (num_active_crtcs != 1) | |
1307 | wm->cxsr = false; | |
1308 | ||
6f9c784b VS |
1309 | if (num_active_crtcs > 1) |
1310 | wm->level = VLV_WM_LEVEL_PM2; | |
1311 | ||
262cd2e1 VS |
1312 | for_each_intel_crtc(dev, crtc) { |
1313 | struct vlv_wm_state *wm_state = &crtc->wm_state; | |
1314 | enum pipe pipe = crtc->pipe; | |
1315 | ||
1316 | if (!crtc->active) | |
1317 | continue; | |
1318 | ||
1319 | wm->pipe[pipe] = wm_state->wm[wm->level]; | |
1320 | if (wm->cxsr) | |
1321 | wm->sr = wm_state->sr[wm->level]; | |
1322 | ||
1323 | wm->ddl[pipe].primary = DDL_PRECISION_HIGH | 2; | |
1324 | wm->ddl[pipe].sprite[0] = DDL_PRECISION_HIGH | 2; | |
1325 | wm->ddl[pipe].sprite[1] = DDL_PRECISION_HIGH | 2; | |
1326 | wm->ddl[pipe].cursor = DDL_PRECISION_HIGH | 2; | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | static void vlv_update_wm(struct drm_crtc *crtc) | |
1331 | { | |
1332 | struct drm_device *dev = crtc->dev; | |
fac5e23e | 1333 | struct drm_i915_private *dev_priv = to_i915(dev); |
262cd2e1 VS |
1334 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
1335 | enum pipe pipe = intel_crtc->pipe; | |
1336 | struct vlv_wm_values wm = {}; | |
1337 | ||
26e1fe4f | 1338 | vlv_compute_wm(intel_crtc); |
262cd2e1 VS |
1339 | vlv_merge_wm(dev, &wm); |
1340 | ||
54f1b6e1 VS |
1341 | if (memcmp(&dev_priv->wm.vlv, &wm, sizeof(wm)) == 0) { |
1342 | /* FIXME should be part of crtc atomic commit */ | |
1343 | vlv_pipe_set_fifo_size(intel_crtc); | |
262cd2e1 | 1344 | return; |
54f1b6e1 | 1345 | } |
262cd2e1 VS |
1346 | |
1347 | if (wm.level < VLV_WM_LEVEL_DDR_DVFS && | |
1348 | dev_priv->wm.vlv.level >= VLV_WM_LEVEL_DDR_DVFS) | |
1349 | chv_set_memory_dvfs(dev_priv, false); | |
1350 | ||
1351 | if (wm.level < VLV_WM_LEVEL_PM5 && | |
1352 | dev_priv->wm.vlv.level >= VLV_WM_LEVEL_PM5) | |
1353 | chv_set_memory_pm5(dev_priv, false); | |
1354 | ||
852eb00d | 1355 | if (!wm.cxsr && dev_priv->wm.vlv.cxsr) |
262cd2e1 | 1356 | intel_set_memory_cxsr(dev_priv, false); |
262cd2e1 | 1357 | |
54f1b6e1 VS |
1358 | /* FIXME should be part of crtc atomic commit */ |
1359 | vlv_pipe_set_fifo_size(intel_crtc); | |
1360 | ||
262cd2e1 VS |
1361 | vlv_write_wm_values(intel_crtc, &wm); |
1362 | ||
1363 | DRM_DEBUG_KMS("Setting FIFO watermarks - %c: plane=%d, cursor=%d, " | |
1364 | "sprite0=%d, sprite1=%d, SR: plane=%d, cursor=%d level=%d cxsr=%d\n", | |
1365 | pipe_name(pipe), wm.pipe[pipe].primary, wm.pipe[pipe].cursor, | |
1366 | wm.pipe[pipe].sprite[0], wm.pipe[pipe].sprite[1], | |
1367 | wm.sr.plane, wm.sr.cursor, wm.level, wm.cxsr); | |
1368 | ||
852eb00d | 1369 | if (wm.cxsr && !dev_priv->wm.vlv.cxsr) |
262cd2e1 | 1370 | intel_set_memory_cxsr(dev_priv, true); |
262cd2e1 VS |
1371 | |
1372 | if (wm.level >= VLV_WM_LEVEL_PM5 && | |
1373 | dev_priv->wm.vlv.level < VLV_WM_LEVEL_PM5) | |
1374 | chv_set_memory_pm5(dev_priv, true); | |
1375 | ||
1376 | if (wm.level >= VLV_WM_LEVEL_DDR_DVFS && | |
1377 | dev_priv->wm.vlv.level < VLV_WM_LEVEL_DDR_DVFS) | |
1378 | chv_set_memory_dvfs(dev_priv, true); | |
1379 | ||
1380 | dev_priv->wm.vlv = wm; | |
3c2777fd VS |
1381 | } |
1382 | ||
ae80152d VS |
1383 | #define single_plane_enabled(mask) is_power_of_2(mask) |
1384 | ||
46ba614c | 1385 | static void g4x_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1386 | { |
46ba614c | 1387 | struct drm_device *dev = crtc->dev; |
b445e3b0 | 1388 | static const int sr_latency_ns = 12000; |
fac5e23e | 1389 | struct drm_i915_private *dev_priv = to_i915(dev); |
b445e3b0 ED |
1390 | int planea_wm, planeb_wm, cursora_wm, cursorb_wm; |
1391 | int plane_sr, cursor_sr; | |
1392 | unsigned int enabled = 0; | |
9858425c | 1393 | bool cxsr_enabled; |
b445e3b0 | 1394 | |
51cea1f4 | 1395 | if (g4x_compute_wm0(dev, PIPE_A, |
5aef6003 CW |
1396 | &g4x_wm_info, pessimal_latency_ns, |
1397 | &g4x_cursor_wm_info, pessimal_latency_ns, | |
b445e3b0 | 1398 | &planea_wm, &cursora_wm)) |
51cea1f4 | 1399 | enabled |= 1 << PIPE_A; |
b445e3b0 | 1400 | |
51cea1f4 | 1401 | if (g4x_compute_wm0(dev, PIPE_B, |
5aef6003 CW |
1402 | &g4x_wm_info, pessimal_latency_ns, |
1403 | &g4x_cursor_wm_info, pessimal_latency_ns, | |
b445e3b0 | 1404 | &planeb_wm, &cursorb_wm)) |
51cea1f4 | 1405 | enabled |= 1 << PIPE_B; |
b445e3b0 | 1406 | |
b445e3b0 ED |
1407 | if (single_plane_enabled(enabled) && |
1408 | g4x_compute_srwm(dev, ffs(enabled) - 1, | |
1409 | sr_latency_ns, | |
1410 | &g4x_wm_info, | |
1411 | &g4x_cursor_wm_info, | |
52bd02d8 | 1412 | &plane_sr, &cursor_sr)) { |
9858425c | 1413 | cxsr_enabled = true; |
52bd02d8 | 1414 | } else { |
9858425c | 1415 | cxsr_enabled = false; |
5209b1f4 | 1416 | intel_set_memory_cxsr(dev_priv, false); |
52bd02d8 CW |
1417 | plane_sr = cursor_sr = 0; |
1418 | } | |
b445e3b0 | 1419 | |
a5043453 VS |
1420 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, " |
1421 | "B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n", | |
b445e3b0 ED |
1422 | planea_wm, cursora_wm, |
1423 | planeb_wm, cursorb_wm, | |
1424 | plane_sr, cursor_sr); | |
1425 | ||
1426 | I915_WRITE(DSPFW1, | |
f4998963 VS |
1427 | FW_WM(plane_sr, SR) | |
1428 | FW_WM(cursorb_wm, CURSORB) | | |
1429 | FW_WM(planeb_wm, PLANEB) | | |
1430 | FW_WM(planea_wm, PLANEA)); | |
b445e3b0 | 1431 | I915_WRITE(DSPFW2, |
8c919b28 | 1432 | (I915_READ(DSPFW2) & ~DSPFW_CURSORA_MASK) | |
f4998963 | 1433 | FW_WM(cursora_wm, CURSORA)); |
b445e3b0 ED |
1434 | /* HPLL off in SR has some issues on G4x... disable it */ |
1435 | I915_WRITE(DSPFW3, | |
8c919b28 | 1436 | (I915_READ(DSPFW3) & ~(DSPFW_HPLL_SR_EN | DSPFW_CURSOR_SR_MASK)) | |
f4998963 | 1437 | FW_WM(cursor_sr, CURSOR_SR)); |
9858425c ID |
1438 | |
1439 | if (cxsr_enabled) | |
1440 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1441 | } |
1442 | ||
46ba614c | 1443 | static void i965_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1444 | { |
46ba614c | 1445 | struct drm_device *dev = unused_crtc->dev; |
fac5e23e | 1446 | struct drm_i915_private *dev_priv = to_i915(dev); |
b445e3b0 ED |
1447 | struct drm_crtc *crtc; |
1448 | int srwm = 1; | |
1449 | int cursor_sr = 16; | |
9858425c | 1450 | bool cxsr_enabled; |
b445e3b0 ED |
1451 | |
1452 | /* Calc sr entries for one plane configs */ | |
1453 | crtc = single_enabled_crtc(dev); | |
1454 | if (crtc) { | |
1455 | /* self-refresh has much higher latency */ | |
1456 | static const int sr_latency_ns = 12000; | |
124abe07 | 1457 | const struct drm_display_mode *adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1458 | int clock = adjusted_mode->crtc_clock; |
fec8cba3 | 1459 | int htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 1460 | int hdisplay = to_intel_crtc(crtc)->config->pipe_src_w; |
ac484963 | 1461 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b445e3b0 ED |
1462 | unsigned long line_time_us; |
1463 | int entries; | |
1464 | ||
922044c9 | 1465 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 ED |
1466 | |
1467 | /* Use ns/us then divide to preserve precision */ | |
1468 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
ac484963 | 1469 | cpp * hdisplay; |
b445e3b0 ED |
1470 | entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE); |
1471 | srwm = I965_FIFO_SIZE - entries; | |
1472 | if (srwm < 0) | |
1473 | srwm = 1; | |
1474 | srwm &= 0x1ff; | |
1475 | DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n", | |
1476 | entries, srwm); | |
1477 | ||
1478 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
ac484963 | 1479 | cpp * crtc->cursor->state->crtc_w; |
b445e3b0 ED |
1480 | entries = DIV_ROUND_UP(entries, |
1481 | i965_cursor_wm_info.cacheline_size); | |
1482 | cursor_sr = i965_cursor_wm_info.fifo_size - | |
1483 | (entries + i965_cursor_wm_info.guard_size); | |
1484 | ||
1485 | if (cursor_sr > i965_cursor_wm_info.max_wm) | |
1486 | cursor_sr = i965_cursor_wm_info.max_wm; | |
1487 | ||
1488 | DRM_DEBUG_KMS("self-refresh watermark: display plane %d " | |
1489 | "cursor %d\n", srwm, cursor_sr); | |
1490 | ||
9858425c | 1491 | cxsr_enabled = true; |
b445e3b0 | 1492 | } else { |
9858425c | 1493 | cxsr_enabled = false; |
b445e3b0 | 1494 | /* Turn off self refresh if both pipes are enabled */ |
5209b1f4 | 1495 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
1496 | } |
1497 | ||
1498 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n", | |
1499 | srwm); | |
1500 | ||
1501 | /* 965 has limitations... */ | |
f4998963 VS |
1502 | I915_WRITE(DSPFW1, FW_WM(srwm, SR) | |
1503 | FW_WM(8, CURSORB) | | |
1504 | FW_WM(8, PLANEB) | | |
1505 | FW_WM(8, PLANEA)); | |
1506 | I915_WRITE(DSPFW2, FW_WM(8, CURSORA) | | |
1507 | FW_WM(8, PLANEC_OLD)); | |
b445e3b0 | 1508 | /* update cursor SR watermark */ |
f4998963 | 1509 | I915_WRITE(DSPFW3, FW_WM(cursor_sr, CURSOR_SR)); |
9858425c ID |
1510 | |
1511 | if (cxsr_enabled) | |
1512 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1513 | } |
1514 | ||
f4998963 VS |
1515 | #undef FW_WM |
1516 | ||
46ba614c | 1517 | static void i9xx_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1518 | { |
46ba614c | 1519 | struct drm_device *dev = unused_crtc->dev; |
fac5e23e | 1520 | struct drm_i915_private *dev_priv = to_i915(dev); |
b445e3b0 ED |
1521 | const struct intel_watermark_params *wm_info; |
1522 | uint32_t fwater_lo; | |
1523 | uint32_t fwater_hi; | |
1524 | int cwm, srwm = 1; | |
1525 | int fifo_size; | |
1526 | int planea_wm, planeb_wm; | |
1527 | struct drm_crtc *crtc, *enabled = NULL; | |
1528 | ||
1529 | if (IS_I945GM(dev)) | |
1530 | wm_info = &i945_wm_info; | |
1531 | else if (!IS_GEN2(dev)) | |
1532 | wm_info = &i915_wm_info; | |
1533 | else | |
9d539105 | 1534 | wm_info = &i830_a_wm_info; |
b445e3b0 ED |
1535 | |
1536 | fifo_size = dev_priv->display.get_fifo_size(dev, 0); | |
1537 | crtc = intel_get_crtc_for_plane(dev, 0); | |
3490ea5d | 1538 | if (intel_crtc_active(crtc)) { |
241bfc38 | 1539 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 1540 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b9e0bda3 CW |
1541 | if (IS_GEN2(dev)) |
1542 | cpp = 4; | |
1543 | ||
6e3c9717 | 1544 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1545 | planea_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
b9e0bda3 | 1546 | wm_info, fifo_size, cpp, |
5aef6003 | 1547 | pessimal_latency_ns); |
b445e3b0 | 1548 | enabled = crtc; |
9d539105 | 1549 | } else { |
b445e3b0 | 1550 | planea_wm = fifo_size - wm_info->guard_size; |
9d539105 VS |
1551 | if (planea_wm > (long)wm_info->max_wm) |
1552 | planea_wm = wm_info->max_wm; | |
1553 | } | |
1554 | ||
1555 | if (IS_GEN2(dev)) | |
1556 | wm_info = &i830_bc_wm_info; | |
b445e3b0 ED |
1557 | |
1558 | fifo_size = dev_priv->display.get_fifo_size(dev, 1); | |
1559 | crtc = intel_get_crtc_for_plane(dev, 1); | |
3490ea5d | 1560 | if (intel_crtc_active(crtc)) { |
241bfc38 | 1561 | const struct drm_display_mode *adjusted_mode; |
ac484963 | 1562 | int cpp = drm_format_plane_cpp(crtc->primary->state->fb->pixel_format, 0); |
b9e0bda3 CW |
1563 | if (IS_GEN2(dev)) |
1564 | cpp = 4; | |
1565 | ||
6e3c9717 | 1566 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1567 | planeb_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
b9e0bda3 | 1568 | wm_info, fifo_size, cpp, |
5aef6003 | 1569 | pessimal_latency_ns); |
b445e3b0 ED |
1570 | if (enabled == NULL) |
1571 | enabled = crtc; | |
1572 | else | |
1573 | enabled = NULL; | |
9d539105 | 1574 | } else { |
b445e3b0 | 1575 | planeb_wm = fifo_size - wm_info->guard_size; |
9d539105 VS |
1576 | if (planeb_wm > (long)wm_info->max_wm) |
1577 | planeb_wm = wm_info->max_wm; | |
1578 | } | |
b445e3b0 ED |
1579 | |
1580 | DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm); | |
1581 | ||
2ab1bc9d | 1582 | if (IS_I915GM(dev) && enabled) { |
2ff8fde1 | 1583 | struct drm_i915_gem_object *obj; |
2ab1bc9d | 1584 | |
59bea882 | 1585 | obj = intel_fb_obj(enabled->primary->state->fb); |
2ab1bc9d DV |
1586 | |
1587 | /* self-refresh seems busted with untiled */ | |
3e510a8e | 1588 | if (!i915_gem_object_is_tiled(obj)) |
2ab1bc9d DV |
1589 | enabled = NULL; |
1590 | } | |
1591 | ||
b445e3b0 ED |
1592 | /* |
1593 | * Overlay gets an aggressive default since video jitter is bad. | |
1594 | */ | |
1595 | cwm = 2; | |
1596 | ||
1597 | /* Play safe and disable self-refresh before adjusting watermarks. */ | |
5209b1f4 | 1598 | intel_set_memory_cxsr(dev_priv, false); |
b445e3b0 ED |
1599 | |
1600 | /* Calc sr entries for one plane configs */ | |
1601 | if (HAS_FW_BLC(dev) && enabled) { | |
1602 | /* self-refresh has much higher latency */ | |
1603 | static const int sr_latency_ns = 6000; | |
124abe07 | 1604 | const struct drm_display_mode *adjusted_mode = &to_intel_crtc(enabled)->config->base.adjusted_mode; |
241bfc38 | 1605 | int clock = adjusted_mode->crtc_clock; |
fec8cba3 | 1606 | int htotal = adjusted_mode->crtc_htotal; |
6e3c9717 | 1607 | int hdisplay = to_intel_crtc(enabled)->config->pipe_src_w; |
ac484963 | 1608 | int cpp = drm_format_plane_cpp(enabled->primary->state->fb->pixel_format, 0); |
b445e3b0 ED |
1609 | unsigned long line_time_us; |
1610 | int entries; | |
1611 | ||
2d1b5056 VS |
1612 | if (IS_I915GM(dev) || IS_I945GM(dev)) |
1613 | cpp = 4; | |
1614 | ||
922044c9 | 1615 | line_time_us = max(htotal * 1000 / clock, 1); |
b445e3b0 ED |
1616 | |
1617 | /* Use ns/us then divide to preserve precision */ | |
1618 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
ac484963 | 1619 | cpp * hdisplay; |
b445e3b0 ED |
1620 | entries = DIV_ROUND_UP(entries, wm_info->cacheline_size); |
1621 | DRM_DEBUG_KMS("self-refresh entries: %d\n", entries); | |
1622 | srwm = wm_info->fifo_size - entries; | |
1623 | if (srwm < 0) | |
1624 | srwm = 1; | |
1625 | ||
1626 | if (IS_I945G(dev) || IS_I945GM(dev)) | |
1627 | I915_WRITE(FW_BLC_SELF, | |
1628 | FW_BLC_SELF_FIFO_MASK | (srwm & 0xff)); | |
acb91359 | 1629 | else |
b445e3b0 ED |
1630 | I915_WRITE(FW_BLC_SELF, srwm & 0x3f); |
1631 | } | |
1632 | ||
1633 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n", | |
1634 | planea_wm, planeb_wm, cwm, srwm); | |
1635 | ||
1636 | fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f); | |
1637 | fwater_hi = (cwm & 0x1f); | |
1638 | ||
1639 | /* Set request length to 8 cachelines per fetch */ | |
1640 | fwater_lo = fwater_lo | (1 << 24) | (1 << 8); | |
1641 | fwater_hi = fwater_hi | (1 << 8); | |
1642 | ||
1643 | I915_WRITE(FW_BLC, fwater_lo); | |
1644 | I915_WRITE(FW_BLC2, fwater_hi); | |
1645 | ||
5209b1f4 ID |
1646 | if (enabled) |
1647 | intel_set_memory_cxsr(dev_priv, true); | |
b445e3b0 ED |
1648 | } |
1649 | ||
feb56b93 | 1650 | static void i845_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1651 | { |
46ba614c | 1652 | struct drm_device *dev = unused_crtc->dev; |
fac5e23e | 1653 | struct drm_i915_private *dev_priv = to_i915(dev); |
b445e3b0 | 1654 | struct drm_crtc *crtc; |
241bfc38 | 1655 | const struct drm_display_mode *adjusted_mode; |
b445e3b0 ED |
1656 | uint32_t fwater_lo; |
1657 | int planea_wm; | |
1658 | ||
1659 | crtc = single_enabled_crtc(dev); | |
1660 | if (crtc == NULL) | |
1661 | return; | |
1662 | ||
6e3c9717 | 1663 | adjusted_mode = &to_intel_crtc(crtc)->config->base.adjusted_mode; |
241bfc38 | 1664 | planea_wm = intel_calculate_wm(adjusted_mode->crtc_clock, |
feb56b93 | 1665 | &i845_wm_info, |
b445e3b0 | 1666 | dev_priv->display.get_fifo_size(dev, 0), |
5aef6003 | 1667 | 4, pessimal_latency_ns); |
b445e3b0 ED |
1668 | fwater_lo = I915_READ(FW_BLC) & ~0xfff; |
1669 | fwater_lo |= (3<<8) | planea_wm; | |
1670 | ||
1671 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm); | |
1672 | ||
1673 | I915_WRITE(FW_BLC, fwater_lo); | |
1674 | } | |
1675 | ||
8cfb3407 | 1676 | uint32_t ilk_pipe_pixel_rate(const struct intel_crtc_state *pipe_config) |
801bcfff | 1677 | { |
fd4daa9c | 1678 | uint32_t pixel_rate; |
801bcfff | 1679 | |
8cfb3407 | 1680 | pixel_rate = pipe_config->base.adjusted_mode.crtc_clock; |
801bcfff PZ |
1681 | |
1682 | /* We only use IF-ID interlacing. If we ever use PF-ID we'll need to | |
1683 | * adjust the pixel_rate here. */ | |
1684 | ||
8cfb3407 | 1685 | if (pipe_config->pch_pfit.enabled) { |
801bcfff | 1686 | uint64_t pipe_w, pipe_h, pfit_w, pfit_h; |
8cfb3407 VS |
1687 | uint32_t pfit_size = pipe_config->pch_pfit.size; |
1688 | ||
1689 | pipe_w = pipe_config->pipe_src_w; | |
1690 | pipe_h = pipe_config->pipe_src_h; | |
801bcfff | 1691 | |
801bcfff PZ |
1692 | pfit_w = (pfit_size >> 16) & 0xFFFF; |
1693 | pfit_h = pfit_size & 0xFFFF; | |
1694 | if (pipe_w < pfit_w) | |
1695 | pipe_w = pfit_w; | |
1696 | if (pipe_h < pfit_h) | |
1697 | pipe_h = pfit_h; | |
1698 | ||
15126882 MR |
1699 | if (WARN_ON(!pfit_w || !pfit_h)) |
1700 | return pixel_rate; | |
1701 | ||
801bcfff PZ |
1702 | pixel_rate = div_u64((uint64_t) pixel_rate * pipe_w * pipe_h, |
1703 | pfit_w * pfit_h); | |
1704 | } | |
1705 | ||
1706 | return pixel_rate; | |
1707 | } | |
1708 | ||
37126462 | 1709 | /* latency must be in 0.1us units. */ |
ac484963 | 1710 | static uint32_t ilk_wm_method1(uint32_t pixel_rate, uint8_t cpp, uint32_t latency) |
801bcfff PZ |
1711 | { |
1712 | uint64_t ret; | |
1713 | ||
3312ba65 VS |
1714 | if (WARN(latency == 0, "Latency value missing\n")) |
1715 | return UINT_MAX; | |
1716 | ||
ac484963 | 1717 | ret = (uint64_t) pixel_rate * cpp * latency; |
801bcfff PZ |
1718 | ret = DIV_ROUND_UP_ULL(ret, 64 * 10000) + 2; |
1719 | ||
1720 | return ret; | |
1721 | } | |
1722 | ||
37126462 | 1723 | /* latency must be in 0.1us units. */ |
23297044 | 1724 | static uint32_t ilk_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, |
ac484963 | 1725 | uint32_t horiz_pixels, uint8_t cpp, |
801bcfff PZ |
1726 | uint32_t latency) |
1727 | { | |
1728 | uint32_t ret; | |
1729 | ||
3312ba65 VS |
1730 | if (WARN(latency == 0, "Latency value missing\n")) |
1731 | return UINT_MAX; | |
15126882 MR |
1732 | if (WARN_ON(!pipe_htotal)) |
1733 | return UINT_MAX; | |
3312ba65 | 1734 | |
801bcfff | 1735 | ret = (latency * pixel_rate) / (pipe_htotal * 10000); |
ac484963 | 1736 | ret = (ret + 1) * horiz_pixels * cpp; |
801bcfff PZ |
1737 | ret = DIV_ROUND_UP(ret, 64) + 2; |
1738 | return ret; | |
1739 | } | |
1740 | ||
23297044 | 1741 | static uint32_t ilk_wm_fbc(uint32_t pri_val, uint32_t horiz_pixels, |
ac484963 | 1742 | uint8_t cpp) |
cca32e9a | 1743 | { |
15126882 MR |
1744 | /* |
1745 | * Neither of these should be possible since this function shouldn't be | |
1746 | * called if the CRTC is off or the plane is invisible. But let's be | |
1747 | * extra paranoid to avoid a potential divide-by-zero if we screw up | |
1748 | * elsewhere in the driver. | |
1749 | */ | |
ac484963 | 1750 | if (WARN_ON(!cpp)) |
15126882 MR |
1751 | return 0; |
1752 | if (WARN_ON(!horiz_pixels)) | |
1753 | return 0; | |
1754 | ||
ac484963 | 1755 | return DIV_ROUND_UP(pri_val * 64, horiz_pixels * cpp) + 2; |
cca32e9a PZ |
1756 | } |
1757 | ||
820c1980 | 1758 | struct ilk_wm_maximums { |
cca32e9a PZ |
1759 | uint16_t pri; |
1760 | uint16_t spr; | |
1761 | uint16_t cur; | |
1762 | uint16_t fbc; | |
1763 | }; | |
1764 | ||
37126462 VS |
1765 | /* |
1766 | * For both WM_PIPE and WM_LP. | |
1767 | * mem_value must be in 0.1us units. | |
1768 | */ | |
7221fc33 | 1769 | static uint32_t ilk_compute_pri_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1770 | const struct intel_plane_state *pstate, |
cca32e9a PZ |
1771 | uint32_t mem_value, |
1772 | bool is_lp) | |
801bcfff | 1773 | { |
ac484963 VS |
1774 | int cpp = pstate->base.fb ? |
1775 | drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0; | |
cca32e9a PZ |
1776 | uint32_t method1, method2; |
1777 | ||
936e71e3 | 1778 | if (!cstate->base.active || !pstate->base.visible) |
801bcfff PZ |
1779 | return 0; |
1780 | ||
ac484963 | 1781 | method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), cpp, mem_value); |
cca32e9a PZ |
1782 | |
1783 | if (!is_lp) | |
1784 | return method1; | |
1785 | ||
7221fc33 MR |
1786 | method2 = ilk_wm_method2(ilk_pipe_pixel_rate(cstate), |
1787 | cstate->base.adjusted_mode.crtc_htotal, | |
936e71e3 | 1788 | drm_rect_width(&pstate->base.dst), |
ac484963 | 1789 | cpp, mem_value); |
cca32e9a PZ |
1790 | |
1791 | return min(method1, method2); | |
801bcfff PZ |
1792 | } |
1793 | ||
37126462 VS |
1794 | /* |
1795 | * For both WM_PIPE and WM_LP. | |
1796 | * mem_value must be in 0.1us units. | |
1797 | */ | |
7221fc33 | 1798 | static uint32_t ilk_compute_spr_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1799 | const struct intel_plane_state *pstate, |
801bcfff PZ |
1800 | uint32_t mem_value) |
1801 | { | |
ac484963 VS |
1802 | int cpp = pstate->base.fb ? |
1803 | drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0; | |
801bcfff PZ |
1804 | uint32_t method1, method2; |
1805 | ||
936e71e3 | 1806 | if (!cstate->base.active || !pstate->base.visible) |
801bcfff PZ |
1807 | return 0; |
1808 | ||
ac484963 | 1809 | method1 = ilk_wm_method1(ilk_pipe_pixel_rate(cstate), cpp, mem_value); |
7221fc33 MR |
1810 | method2 = ilk_wm_method2(ilk_pipe_pixel_rate(cstate), |
1811 | cstate->base.adjusted_mode.crtc_htotal, | |
936e71e3 | 1812 | drm_rect_width(&pstate->base.dst), |
ac484963 | 1813 | cpp, mem_value); |
801bcfff PZ |
1814 | return min(method1, method2); |
1815 | } | |
1816 | ||
37126462 VS |
1817 | /* |
1818 | * For both WM_PIPE and WM_LP. | |
1819 | * mem_value must be in 0.1us units. | |
1820 | */ | |
7221fc33 | 1821 | static uint32_t ilk_compute_cur_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1822 | const struct intel_plane_state *pstate, |
801bcfff PZ |
1823 | uint32_t mem_value) |
1824 | { | |
b2435692 MR |
1825 | /* |
1826 | * We treat the cursor plane as always-on for the purposes of watermark | |
1827 | * calculation. Until we have two-stage watermark programming merged, | |
1828 | * this is necessary to avoid flickering. | |
1829 | */ | |
1830 | int cpp = 4; | |
936e71e3 | 1831 | int width = pstate->base.visible ? pstate->base.crtc_w : 64; |
43d59eda | 1832 | |
b2435692 | 1833 | if (!cstate->base.active) |
801bcfff PZ |
1834 | return 0; |
1835 | ||
7221fc33 MR |
1836 | return ilk_wm_method2(ilk_pipe_pixel_rate(cstate), |
1837 | cstate->base.adjusted_mode.crtc_htotal, | |
b2435692 | 1838 | width, cpp, mem_value); |
801bcfff PZ |
1839 | } |
1840 | ||
cca32e9a | 1841 | /* Only for WM_LP. */ |
7221fc33 | 1842 | static uint32_t ilk_compute_fbc_wm(const struct intel_crtc_state *cstate, |
43d59eda | 1843 | const struct intel_plane_state *pstate, |
1fda9882 | 1844 | uint32_t pri_val) |
cca32e9a | 1845 | { |
ac484963 VS |
1846 | int cpp = pstate->base.fb ? |
1847 | drm_format_plane_cpp(pstate->base.fb->pixel_format, 0) : 0; | |
43d59eda | 1848 | |
936e71e3 | 1849 | if (!cstate->base.active || !pstate->base.visible) |
cca32e9a PZ |
1850 | return 0; |
1851 | ||
936e71e3 | 1852 | return ilk_wm_fbc(pri_val, drm_rect_width(&pstate->base.dst), cpp); |
cca32e9a PZ |
1853 | } |
1854 | ||
158ae64f VS |
1855 | static unsigned int ilk_display_fifo_size(const struct drm_device *dev) |
1856 | { | |
416f4727 VS |
1857 | if (INTEL_INFO(dev)->gen >= 8) |
1858 | return 3072; | |
1859 | else if (INTEL_INFO(dev)->gen >= 7) | |
158ae64f VS |
1860 | return 768; |
1861 | else | |
1862 | return 512; | |
1863 | } | |
1864 | ||
4e975081 VS |
1865 | static unsigned int ilk_plane_wm_reg_max(const struct drm_device *dev, |
1866 | int level, bool is_sprite) | |
1867 | { | |
1868 | if (INTEL_INFO(dev)->gen >= 8) | |
1869 | /* BDW primary/sprite plane watermarks */ | |
1870 | return level == 0 ? 255 : 2047; | |
1871 | else if (INTEL_INFO(dev)->gen >= 7) | |
1872 | /* IVB/HSW primary/sprite plane watermarks */ | |
1873 | return level == 0 ? 127 : 1023; | |
1874 | else if (!is_sprite) | |
1875 | /* ILK/SNB primary plane watermarks */ | |
1876 | return level == 0 ? 127 : 511; | |
1877 | else | |
1878 | /* ILK/SNB sprite plane watermarks */ | |
1879 | return level == 0 ? 63 : 255; | |
1880 | } | |
1881 | ||
1882 | static unsigned int ilk_cursor_wm_reg_max(const struct drm_device *dev, | |
1883 | int level) | |
1884 | { | |
1885 | if (INTEL_INFO(dev)->gen >= 7) | |
1886 | return level == 0 ? 63 : 255; | |
1887 | else | |
1888 | return level == 0 ? 31 : 63; | |
1889 | } | |
1890 | ||
1891 | static unsigned int ilk_fbc_wm_reg_max(const struct drm_device *dev) | |
1892 | { | |
1893 | if (INTEL_INFO(dev)->gen >= 8) | |
1894 | return 31; | |
1895 | else | |
1896 | return 15; | |
1897 | } | |
1898 | ||
158ae64f VS |
1899 | /* Calculate the maximum primary/sprite plane watermark */ |
1900 | static unsigned int ilk_plane_wm_max(const struct drm_device *dev, | |
1901 | int level, | |
240264f4 | 1902 | const struct intel_wm_config *config, |
158ae64f VS |
1903 | enum intel_ddb_partitioning ddb_partitioning, |
1904 | bool is_sprite) | |
1905 | { | |
1906 | unsigned int fifo_size = ilk_display_fifo_size(dev); | |
158ae64f VS |
1907 | |
1908 | /* if sprites aren't enabled, sprites get nothing */ | |
240264f4 | 1909 | if (is_sprite && !config->sprites_enabled) |
158ae64f VS |
1910 | return 0; |
1911 | ||
1912 | /* HSW allows LP1+ watermarks even with multiple pipes */ | |
240264f4 | 1913 | if (level == 0 || config->num_pipes_active > 1) { |
158ae64f VS |
1914 | fifo_size /= INTEL_INFO(dev)->num_pipes; |
1915 | ||
1916 | /* | |
1917 | * For some reason the non self refresh | |
1918 | * FIFO size is only half of the self | |
1919 | * refresh FIFO size on ILK/SNB. | |
1920 | */ | |
1921 | if (INTEL_INFO(dev)->gen <= 6) | |
1922 | fifo_size /= 2; | |
1923 | } | |
1924 | ||
240264f4 | 1925 | if (config->sprites_enabled) { |
158ae64f VS |
1926 | /* level 0 is always calculated with 1:1 split */ |
1927 | if (level > 0 && ddb_partitioning == INTEL_DDB_PART_5_6) { | |
1928 | if (is_sprite) | |
1929 | fifo_size *= 5; | |
1930 | fifo_size /= 6; | |
1931 | } else { | |
1932 | fifo_size /= 2; | |
1933 | } | |
1934 | } | |
1935 | ||
1936 | /* clamp to max that the registers can hold */ | |
4e975081 | 1937 | return min(fifo_size, ilk_plane_wm_reg_max(dev, level, is_sprite)); |
158ae64f VS |
1938 | } |
1939 | ||
1940 | /* Calculate the maximum cursor plane watermark */ | |
1941 | static unsigned int ilk_cursor_wm_max(const struct drm_device *dev, | |
240264f4 VS |
1942 | int level, |
1943 | const struct intel_wm_config *config) | |
158ae64f VS |
1944 | { |
1945 | /* HSW LP1+ watermarks w/ multiple pipes */ | |
240264f4 | 1946 | if (level > 0 && config->num_pipes_active > 1) |
158ae64f VS |
1947 | return 64; |
1948 | ||
1949 | /* otherwise just report max that registers can hold */ | |
4e975081 | 1950 | return ilk_cursor_wm_reg_max(dev, level); |
158ae64f VS |
1951 | } |
1952 | ||
d34ff9c6 | 1953 | static void ilk_compute_wm_maximums(const struct drm_device *dev, |
34982fe1 VS |
1954 | int level, |
1955 | const struct intel_wm_config *config, | |
1956 | enum intel_ddb_partitioning ddb_partitioning, | |
820c1980 | 1957 | struct ilk_wm_maximums *max) |
158ae64f | 1958 | { |
240264f4 VS |
1959 | max->pri = ilk_plane_wm_max(dev, level, config, ddb_partitioning, false); |
1960 | max->spr = ilk_plane_wm_max(dev, level, config, ddb_partitioning, true); | |
1961 | max->cur = ilk_cursor_wm_max(dev, level, config); | |
4e975081 | 1962 | max->fbc = ilk_fbc_wm_reg_max(dev); |
158ae64f VS |
1963 | } |
1964 | ||
a3cb4048 VS |
1965 | static void ilk_compute_wm_reg_maximums(struct drm_device *dev, |
1966 | int level, | |
1967 | struct ilk_wm_maximums *max) | |
1968 | { | |
1969 | max->pri = ilk_plane_wm_reg_max(dev, level, false); | |
1970 | max->spr = ilk_plane_wm_reg_max(dev, level, true); | |
1971 | max->cur = ilk_cursor_wm_reg_max(dev, level); | |
1972 | max->fbc = ilk_fbc_wm_reg_max(dev); | |
1973 | } | |
1974 | ||
d9395655 | 1975 | static bool ilk_validate_wm_level(int level, |
820c1980 | 1976 | const struct ilk_wm_maximums *max, |
d9395655 | 1977 | struct intel_wm_level *result) |
a9786a11 VS |
1978 | { |
1979 | bool ret; | |
1980 | ||
1981 | /* already determined to be invalid? */ | |
1982 | if (!result->enable) | |
1983 | return false; | |
1984 | ||
1985 | result->enable = result->pri_val <= max->pri && | |
1986 | result->spr_val <= max->spr && | |
1987 | result->cur_val <= max->cur; | |
1988 | ||
1989 | ret = result->enable; | |
1990 | ||
1991 | /* | |
1992 | * HACK until we can pre-compute everything, | |
1993 | * and thus fail gracefully if LP0 watermarks | |
1994 | * are exceeded... | |
1995 | */ | |
1996 | if (level == 0 && !result->enable) { | |
1997 | if (result->pri_val > max->pri) | |
1998 | DRM_DEBUG_KMS("Primary WM%d too large %u (max %u)\n", | |
1999 | level, result->pri_val, max->pri); | |
2000 | if (result->spr_val > max->spr) | |
2001 | DRM_DEBUG_KMS("Sprite WM%d too large %u (max %u)\n", | |
2002 | level, result->spr_val, max->spr); | |
2003 | if (result->cur_val > max->cur) | |
2004 | DRM_DEBUG_KMS("Cursor WM%d too large %u (max %u)\n", | |
2005 | level, result->cur_val, max->cur); | |
2006 | ||
2007 | result->pri_val = min_t(uint32_t, result->pri_val, max->pri); | |
2008 | result->spr_val = min_t(uint32_t, result->spr_val, max->spr); | |
2009 | result->cur_val = min_t(uint32_t, result->cur_val, max->cur); | |
2010 | result->enable = true; | |
2011 | } | |
2012 | ||
a9786a11 VS |
2013 | return ret; |
2014 | } | |
2015 | ||
d34ff9c6 | 2016 | static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv, |
43d59eda | 2017 | const struct intel_crtc *intel_crtc, |
6f5ddd17 | 2018 | int level, |
7221fc33 | 2019 | struct intel_crtc_state *cstate, |
86c8bbbe MR |
2020 | struct intel_plane_state *pristate, |
2021 | struct intel_plane_state *sprstate, | |
2022 | struct intel_plane_state *curstate, | |
1fd527cc | 2023 | struct intel_wm_level *result) |
6f5ddd17 VS |
2024 | { |
2025 | uint16_t pri_latency = dev_priv->wm.pri_latency[level]; | |
2026 | uint16_t spr_latency = dev_priv->wm.spr_latency[level]; | |
2027 | uint16_t cur_latency = dev_priv->wm.cur_latency[level]; | |
2028 | ||
2029 | /* WM1+ latency values stored in 0.5us units */ | |
2030 | if (level > 0) { | |
2031 | pri_latency *= 5; | |
2032 | spr_latency *= 5; | |
2033 | cur_latency *= 5; | |
2034 | } | |
2035 | ||
e3bddded ML |
2036 | if (pristate) { |
2037 | result->pri_val = ilk_compute_pri_wm(cstate, pristate, | |
2038 | pri_latency, level); | |
2039 | result->fbc_val = ilk_compute_fbc_wm(cstate, pristate, result->pri_val); | |
2040 | } | |
2041 | ||
2042 | if (sprstate) | |
2043 | result->spr_val = ilk_compute_spr_wm(cstate, sprstate, spr_latency); | |
2044 | ||
2045 | if (curstate) | |
2046 | result->cur_val = ilk_compute_cur_wm(cstate, curstate, cur_latency); | |
2047 | ||
6f5ddd17 VS |
2048 | result->enable = true; |
2049 | } | |
2050 | ||
801bcfff | 2051 | static uint32_t |
532f7a7f | 2052 | hsw_compute_linetime_wm(const struct intel_crtc_state *cstate) |
1f8eeabf | 2053 | { |
532f7a7f VS |
2054 | const struct intel_atomic_state *intel_state = |
2055 | to_intel_atomic_state(cstate->base.state); | |
ee91a159 MR |
2056 | const struct drm_display_mode *adjusted_mode = |
2057 | &cstate->base.adjusted_mode; | |
85a02deb | 2058 | u32 linetime, ips_linetime; |
1f8eeabf | 2059 | |
ee91a159 MR |
2060 | if (!cstate->base.active) |
2061 | return 0; | |
2062 | if (WARN_ON(adjusted_mode->crtc_clock == 0)) | |
2063 | return 0; | |
532f7a7f | 2064 | if (WARN_ON(intel_state->cdclk == 0)) |
801bcfff | 2065 | return 0; |
1011d8c4 | 2066 | |
1f8eeabf ED |
2067 | /* The WM are computed with base on how long it takes to fill a single |
2068 | * row at the given clock rate, multiplied by 8. | |
2069 | * */ | |
124abe07 VS |
2070 | linetime = DIV_ROUND_CLOSEST(adjusted_mode->crtc_htotal * 1000 * 8, |
2071 | adjusted_mode->crtc_clock); | |
2072 | ips_linetime = DIV_ROUND_CLOSEST(adjusted_mode->crtc_htotal * 1000 * 8, | |
532f7a7f | 2073 | intel_state->cdclk); |
1f8eeabf | 2074 | |
801bcfff PZ |
2075 | return PIPE_WM_LINETIME_IPS_LINETIME(ips_linetime) | |
2076 | PIPE_WM_LINETIME_TIME(linetime); | |
1f8eeabf ED |
2077 | } |
2078 | ||
2af30a5c | 2079 | static void intel_read_wm_latency(struct drm_device *dev, uint16_t wm[8]) |
12b134df | 2080 | { |
fac5e23e | 2081 | struct drm_i915_private *dev_priv = to_i915(dev); |
12b134df | 2082 | |
2af30a5c PB |
2083 | if (IS_GEN9(dev)) { |
2084 | uint32_t val; | |
4f947386 | 2085 | int ret, i; |
367294be | 2086 | int level, max_level = ilk_wm_max_level(dev); |
2af30a5c PB |
2087 | |
2088 | /* read the first set of memory latencies[0:3] */ | |
2089 | val = 0; /* data0 to be programmed to 0 for first set */ | |
2090 | mutex_lock(&dev_priv->rps.hw_lock); | |
2091 | ret = sandybridge_pcode_read(dev_priv, | |
2092 | GEN9_PCODE_READ_MEM_LATENCY, | |
2093 | &val); | |
2094 | mutex_unlock(&dev_priv->rps.hw_lock); | |
2095 | ||
2096 | if (ret) { | |
2097 | DRM_ERROR("SKL Mailbox read error = %d\n", ret); | |
2098 | return; | |
2099 | } | |
2100 | ||
2101 | wm[0] = val & GEN9_MEM_LATENCY_LEVEL_MASK; | |
2102 | wm[1] = (val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) & | |
2103 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2104 | wm[2] = (val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) & | |
2105 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2106 | wm[3] = (val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) & | |
2107 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2108 | ||
2109 | /* read the second set of memory latencies[4:7] */ | |
2110 | val = 1; /* data0 to be programmed to 1 for second set */ | |
2111 | mutex_lock(&dev_priv->rps.hw_lock); | |
2112 | ret = sandybridge_pcode_read(dev_priv, | |
2113 | GEN9_PCODE_READ_MEM_LATENCY, | |
2114 | &val); | |
2115 | mutex_unlock(&dev_priv->rps.hw_lock); | |
2116 | if (ret) { | |
2117 | DRM_ERROR("SKL Mailbox read error = %d\n", ret); | |
2118 | return; | |
2119 | } | |
2120 | ||
2121 | wm[4] = val & GEN9_MEM_LATENCY_LEVEL_MASK; | |
2122 | wm[5] = (val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) & | |
2123 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2124 | wm[6] = (val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) & | |
2125 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2126 | wm[7] = (val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) & | |
2127 | GEN9_MEM_LATENCY_LEVEL_MASK; | |
2128 | ||
0727e40a PZ |
2129 | /* |
2130 | * If a level n (n > 1) has a 0us latency, all levels m (m >= n) | |
2131 | * need to be disabled. We make sure to sanitize the values out | |
2132 | * of the punit to satisfy this requirement. | |
2133 | */ | |
2134 | for (level = 1; level <= max_level; level++) { | |
2135 | if (wm[level] == 0) { | |
2136 | for (i = level + 1; i <= max_level; i++) | |
2137 | wm[i] = 0; | |
2138 | break; | |
2139 | } | |
2140 | } | |
2141 | ||
367294be | 2142 | /* |
6f97235b DL |
2143 | * WaWmMemoryReadLatency:skl |
2144 | * | |
367294be | 2145 | * punit doesn't take into account the read latency so we need |
0727e40a PZ |
2146 | * to add 2us to the various latency levels we retrieve from the |
2147 | * punit when level 0 response data us 0us. | |
367294be | 2148 | */ |
0727e40a PZ |
2149 | if (wm[0] == 0) { |
2150 | wm[0] += 2; | |
2151 | for (level = 1; level <= max_level; level++) { | |
2152 | if (wm[level] == 0) | |
2153 | break; | |
367294be | 2154 | wm[level] += 2; |
4f947386 | 2155 | } |
0727e40a PZ |
2156 | } |
2157 | ||
2af30a5c | 2158 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
12b134df VS |
2159 | uint64_t sskpd = I915_READ64(MCH_SSKPD); |
2160 | ||
2161 | wm[0] = (sskpd >> 56) & 0xFF; | |
2162 | if (wm[0] == 0) | |
2163 | wm[0] = sskpd & 0xF; | |
e5d5019e VS |
2164 | wm[1] = (sskpd >> 4) & 0xFF; |
2165 | wm[2] = (sskpd >> 12) & 0xFF; | |
2166 | wm[3] = (sskpd >> 20) & 0x1FF; | |
2167 | wm[4] = (sskpd >> 32) & 0x1FF; | |
63cf9a13 VS |
2168 | } else if (INTEL_INFO(dev)->gen >= 6) { |
2169 | uint32_t sskpd = I915_READ(MCH_SSKPD); | |
2170 | ||
2171 | wm[0] = (sskpd >> SSKPD_WM0_SHIFT) & SSKPD_WM_MASK; | |
2172 | wm[1] = (sskpd >> SSKPD_WM1_SHIFT) & SSKPD_WM_MASK; | |
2173 | wm[2] = (sskpd >> SSKPD_WM2_SHIFT) & SSKPD_WM_MASK; | |
2174 | wm[3] = (sskpd >> SSKPD_WM3_SHIFT) & SSKPD_WM_MASK; | |
3a88d0ac VS |
2175 | } else if (INTEL_INFO(dev)->gen >= 5) { |
2176 | uint32_t mltr = I915_READ(MLTR_ILK); | |
2177 | ||
2178 | /* ILK primary LP0 latency is 700 ns */ | |
2179 | wm[0] = 7; | |
2180 | wm[1] = (mltr >> MLTR_WM1_SHIFT) & ILK_SRLT_MASK; | |
2181 | wm[2] = (mltr >> MLTR_WM2_SHIFT) & ILK_SRLT_MASK; | |
12b134df VS |
2182 | } |
2183 | } | |
2184 | ||
53615a5e VS |
2185 | static void intel_fixup_spr_wm_latency(struct drm_device *dev, uint16_t wm[5]) |
2186 | { | |
2187 | /* ILK sprite LP0 latency is 1300 ns */ | |
7e22dbbb | 2188 | if (IS_GEN5(dev)) |
53615a5e VS |
2189 | wm[0] = 13; |
2190 | } | |
2191 | ||
2192 | static void intel_fixup_cur_wm_latency(struct drm_device *dev, uint16_t wm[5]) | |
2193 | { | |
2194 | /* ILK cursor LP0 latency is 1300 ns */ | |
7e22dbbb | 2195 | if (IS_GEN5(dev)) |
53615a5e VS |
2196 | wm[0] = 13; |
2197 | ||
2198 | /* WaDoubleCursorLP3Latency:ivb */ | |
2199 | if (IS_IVYBRIDGE(dev)) | |
2200 | wm[3] *= 2; | |
2201 | } | |
2202 | ||
546c81fd | 2203 | int ilk_wm_max_level(const struct drm_device *dev) |
26ec971e | 2204 | { |
26ec971e | 2205 | /* how many WM levels are we expecting */ |
b6e742f6 | 2206 | if (INTEL_INFO(dev)->gen >= 9) |
2af30a5c PB |
2207 | return 7; |
2208 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
ad0d6dc4 | 2209 | return 4; |
26ec971e | 2210 | else if (INTEL_INFO(dev)->gen >= 6) |
ad0d6dc4 | 2211 | return 3; |
26ec971e | 2212 | else |
ad0d6dc4 VS |
2213 | return 2; |
2214 | } | |
7526ed79 | 2215 | |
ad0d6dc4 VS |
2216 | static void intel_print_wm_latency(struct drm_device *dev, |
2217 | const char *name, | |
2af30a5c | 2218 | const uint16_t wm[8]) |
ad0d6dc4 VS |
2219 | { |
2220 | int level, max_level = ilk_wm_max_level(dev); | |
26ec971e VS |
2221 | |
2222 | for (level = 0; level <= max_level; level++) { | |
2223 | unsigned int latency = wm[level]; | |
2224 | ||
2225 | if (latency == 0) { | |
2226 | DRM_ERROR("%s WM%d latency not provided\n", | |
2227 | name, level); | |
2228 | continue; | |
2229 | } | |
2230 | ||
2af30a5c PB |
2231 | /* |
2232 | * - latencies are in us on gen9. | |
2233 | * - before then, WM1+ latency values are in 0.5us units | |
2234 | */ | |
2235 | if (IS_GEN9(dev)) | |
2236 | latency *= 10; | |
2237 | else if (level > 0) | |
26ec971e VS |
2238 | latency *= 5; |
2239 | ||
2240 | DRM_DEBUG_KMS("%s WM%d latency %u (%u.%u usec)\n", | |
2241 | name, level, wm[level], | |
2242 | latency / 10, latency % 10); | |
2243 | } | |
2244 | } | |
2245 | ||
e95a2f75 VS |
2246 | static bool ilk_increase_wm_latency(struct drm_i915_private *dev_priv, |
2247 | uint16_t wm[5], uint16_t min) | |
2248 | { | |
91c8a326 | 2249 | int level, max_level = ilk_wm_max_level(&dev_priv->drm); |
e95a2f75 VS |
2250 | |
2251 | if (wm[0] >= min) | |
2252 | return false; | |
2253 | ||
2254 | wm[0] = max(wm[0], min); | |
2255 | for (level = 1; level <= max_level; level++) | |
2256 | wm[level] = max_t(uint16_t, wm[level], DIV_ROUND_UP(min, 5)); | |
2257 | ||
2258 | return true; | |
2259 | } | |
2260 | ||
2261 | static void snb_wm_latency_quirk(struct drm_device *dev) | |
2262 | { | |
fac5e23e | 2263 | struct drm_i915_private *dev_priv = to_i915(dev); |
e95a2f75 VS |
2264 | bool changed; |
2265 | ||
2266 | /* | |
2267 | * The BIOS provided WM memory latency values are often | |
2268 | * inadequate for high resolution displays. Adjust them. | |
2269 | */ | |
2270 | changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12) | | |
2271 | ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12) | | |
2272 | ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12); | |
2273 | ||
2274 | if (!changed) | |
2275 | return; | |
2276 | ||
2277 | DRM_DEBUG_KMS("WM latency values increased to avoid potential underruns\n"); | |
2278 | intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); | |
2279 | intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); | |
2280 | intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); | |
2281 | } | |
2282 | ||
fa50ad61 | 2283 | static void ilk_setup_wm_latency(struct drm_device *dev) |
53615a5e | 2284 | { |
fac5e23e | 2285 | struct drm_i915_private *dev_priv = to_i915(dev); |
53615a5e VS |
2286 | |
2287 | intel_read_wm_latency(dev, dev_priv->wm.pri_latency); | |
2288 | ||
2289 | memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency, | |
2290 | sizeof(dev_priv->wm.pri_latency)); | |
2291 | memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency, | |
2292 | sizeof(dev_priv->wm.pri_latency)); | |
2293 | ||
2294 | intel_fixup_spr_wm_latency(dev, dev_priv->wm.spr_latency); | |
2295 | intel_fixup_cur_wm_latency(dev, dev_priv->wm.cur_latency); | |
26ec971e VS |
2296 | |
2297 | intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); | |
2298 | intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); | |
2299 | intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); | |
e95a2f75 VS |
2300 | |
2301 | if (IS_GEN6(dev)) | |
2302 | snb_wm_latency_quirk(dev); | |
53615a5e VS |
2303 | } |
2304 | ||
2af30a5c PB |
2305 | static void skl_setup_wm_latency(struct drm_device *dev) |
2306 | { | |
fac5e23e | 2307 | struct drm_i915_private *dev_priv = to_i915(dev); |
2af30a5c PB |
2308 | |
2309 | intel_read_wm_latency(dev, dev_priv->wm.skl_latency); | |
2310 | intel_print_wm_latency(dev, "Gen9 Plane", dev_priv->wm.skl_latency); | |
2311 | } | |
2312 | ||
ed4a6a7c MR |
2313 | static bool ilk_validate_pipe_wm(struct drm_device *dev, |
2314 | struct intel_pipe_wm *pipe_wm) | |
2315 | { | |
2316 | /* LP0 watermark maximums depend on this pipe alone */ | |
2317 | const struct intel_wm_config config = { | |
2318 | .num_pipes_active = 1, | |
2319 | .sprites_enabled = pipe_wm->sprites_enabled, | |
2320 | .sprites_scaled = pipe_wm->sprites_scaled, | |
2321 | }; | |
2322 | struct ilk_wm_maximums max; | |
2323 | ||
2324 | /* LP0 watermarks always use 1/2 DDB partitioning */ | |
2325 | ilk_compute_wm_maximums(dev, 0, &config, INTEL_DDB_PART_1_2, &max); | |
2326 | ||
2327 | /* At least LP0 must be valid */ | |
2328 | if (!ilk_validate_wm_level(0, &max, &pipe_wm->wm[0])) { | |
2329 | DRM_DEBUG_KMS("LP0 watermark invalid\n"); | |
2330 | return false; | |
2331 | } | |
2332 | ||
2333 | return true; | |
2334 | } | |
2335 | ||
0b2ae6d7 | 2336 | /* Compute new watermarks for the pipe */ |
e3bddded | 2337 | static int ilk_compute_pipe_wm(struct intel_crtc_state *cstate) |
0b2ae6d7 | 2338 | { |
e3bddded ML |
2339 | struct drm_atomic_state *state = cstate->base.state; |
2340 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); | |
86c8bbbe | 2341 | struct intel_pipe_wm *pipe_wm; |
e3bddded | 2342 | struct drm_device *dev = state->dev; |
fac5e23e | 2343 | const struct drm_i915_private *dev_priv = to_i915(dev); |
43d59eda | 2344 | struct intel_plane *intel_plane; |
86c8bbbe | 2345 | struct intel_plane_state *pristate = NULL; |
43d59eda | 2346 | struct intel_plane_state *sprstate = NULL; |
86c8bbbe | 2347 | struct intel_plane_state *curstate = NULL; |
d81f04c5 | 2348 | int level, max_level = ilk_wm_max_level(dev), usable_level; |
820c1980 | 2349 | struct ilk_wm_maximums max; |
0b2ae6d7 | 2350 | |
e8f1f02e | 2351 | pipe_wm = &cstate->wm.ilk.optimal; |
86c8bbbe | 2352 | |
43d59eda | 2353 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { |
e3bddded ML |
2354 | struct intel_plane_state *ps; |
2355 | ||
2356 | ps = intel_atomic_get_existing_plane_state(state, | |
2357 | intel_plane); | |
2358 | if (!ps) | |
2359 | continue; | |
86c8bbbe MR |
2360 | |
2361 | if (intel_plane->base.type == DRM_PLANE_TYPE_PRIMARY) | |
e3bddded | 2362 | pristate = ps; |
86c8bbbe | 2363 | else if (intel_plane->base.type == DRM_PLANE_TYPE_OVERLAY) |
e3bddded | 2364 | sprstate = ps; |
86c8bbbe | 2365 | else if (intel_plane->base.type == DRM_PLANE_TYPE_CURSOR) |
e3bddded | 2366 | curstate = ps; |
43d59eda MR |
2367 | } |
2368 | ||
ed4a6a7c | 2369 | pipe_wm->pipe_enabled = cstate->base.active; |
e3bddded | 2370 | if (sprstate) { |
936e71e3 VS |
2371 | pipe_wm->sprites_enabled = sprstate->base.visible; |
2372 | pipe_wm->sprites_scaled = sprstate->base.visible && | |
2373 | (drm_rect_width(&sprstate->base.dst) != drm_rect_width(&sprstate->base.src) >> 16 || | |
2374 | drm_rect_height(&sprstate->base.dst) != drm_rect_height(&sprstate->base.src) >> 16); | |
e3bddded ML |
2375 | } |
2376 | ||
d81f04c5 ML |
2377 | usable_level = max_level; |
2378 | ||
7b39a0b7 | 2379 | /* ILK/SNB: LP2+ watermarks only w/o sprites */ |
e3bddded | 2380 | if (INTEL_INFO(dev)->gen <= 6 && pipe_wm->sprites_enabled) |
d81f04c5 | 2381 | usable_level = 1; |
7b39a0b7 VS |
2382 | |
2383 | /* ILK/SNB/IVB: LP1+ watermarks only w/o scaling */ | |
ed4a6a7c | 2384 | if (pipe_wm->sprites_scaled) |
d81f04c5 | 2385 | usable_level = 0; |
7b39a0b7 | 2386 | |
86c8bbbe | 2387 | ilk_compute_wm_level(dev_priv, intel_crtc, 0, cstate, |
71f0a626 ML |
2388 | pristate, sprstate, curstate, &pipe_wm->raw_wm[0]); |
2389 | ||
2390 | memset(&pipe_wm->wm, 0, sizeof(pipe_wm->wm)); | |
2391 | pipe_wm->wm[0] = pipe_wm->raw_wm[0]; | |
0b2ae6d7 | 2392 | |
a42a5719 | 2393 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
532f7a7f | 2394 | pipe_wm->linetime = hsw_compute_linetime_wm(cstate); |
0b2ae6d7 | 2395 | |
ed4a6a7c | 2396 | if (!ilk_validate_pipe_wm(dev, pipe_wm)) |
1a426d61 | 2397 | return -EINVAL; |
a3cb4048 VS |
2398 | |
2399 | ilk_compute_wm_reg_maximums(dev, 1, &max); | |
2400 | ||
2401 | for (level = 1; level <= max_level; level++) { | |
71f0a626 | 2402 | struct intel_wm_level *wm = &pipe_wm->raw_wm[level]; |
a3cb4048 | 2403 | |
86c8bbbe | 2404 | ilk_compute_wm_level(dev_priv, intel_crtc, level, cstate, |
d81f04c5 | 2405 | pristate, sprstate, curstate, wm); |
a3cb4048 VS |
2406 | |
2407 | /* | |
2408 | * Disable any watermark level that exceeds the | |
2409 | * register maximums since such watermarks are | |
2410 | * always invalid. | |
2411 | */ | |
71f0a626 ML |
2412 | if (level > usable_level) |
2413 | continue; | |
2414 | ||
2415 | if (ilk_validate_wm_level(level, &max, wm)) | |
2416 | pipe_wm->wm[level] = *wm; | |
2417 | else | |
d81f04c5 | 2418 | usable_level = level; |
a3cb4048 VS |
2419 | } |
2420 | ||
86c8bbbe | 2421 | return 0; |
0b2ae6d7 VS |
2422 | } |
2423 | ||
ed4a6a7c MR |
2424 | /* |
2425 | * Build a set of 'intermediate' watermark values that satisfy both the old | |
2426 | * state and the new state. These can be programmed to the hardware | |
2427 | * immediately. | |
2428 | */ | |
2429 | static int ilk_compute_intermediate_wm(struct drm_device *dev, | |
2430 | struct intel_crtc *intel_crtc, | |
2431 | struct intel_crtc_state *newstate) | |
2432 | { | |
e8f1f02e | 2433 | struct intel_pipe_wm *a = &newstate->wm.ilk.intermediate; |
ed4a6a7c MR |
2434 | struct intel_pipe_wm *b = &intel_crtc->wm.active.ilk; |
2435 | int level, max_level = ilk_wm_max_level(dev); | |
2436 | ||
2437 | /* | |
2438 | * Start with the final, target watermarks, then combine with the | |
2439 | * currently active watermarks to get values that are safe both before | |
2440 | * and after the vblank. | |
2441 | */ | |
e8f1f02e | 2442 | *a = newstate->wm.ilk.optimal; |
ed4a6a7c MR |
2443 | a->pipe_enabled |= b->pipe_enabled; |
2444 | a->sprites_enabled |= b->sprites_enabled; | |
2445 | a->sprites_scaled |= b->sprites_scaled; | |
2446 | ||
2447 | for (level = 0; level <= max_level; level++) { | |
2448 | struct intel_wm_level *a_wm = &a->wm[level]; | |
2449 | const struct intel_wm_level *b_wm = &b->wm[level]; | |
2450 | ||
2451 | a_wm->enable &= b_wm->enable; | |
2452 | a_wm->pri_val = max(a_wm->pri_val, b_wm->pri_val); | |
2453 | a_wm->spr_val = max(a_wm->spr_val, b_wm->spr_val); | |
2454 | a_wm->cur_val = max(a_wm->cur_val, b_wm->cur_val); | |
2455 | a_wm->fbc_val = max(a_wm->fbc_val, b_wm->fbc_val); | |
2456 | } | |
2457 | ||
2458 | /* | |
2459 | * We need to make sure that these merged watermark values are | |
2460 | * actually a valid configuration themselves. If they're not, | |
2461 | * there's no safe way to transition from the old state to | |
2462 | * the new state, so we need to fail the atomic transaction. | |
2463 | */ | |
2464 | if (!ilk_validate_pipe_wm(dev, a)) | |
2465 | return -EINVAL; | |
2466 | ||
2467 | /* | |
2468 | * If our intermediate WM are identical to the final WM, then we can | |
2469 | * omit the post-vblank programming; only update if it's different. | |
2470 | */ | |
e8f1f02e | 2471 | if (memcmp(a, &newstate->wm.ilk.optimal, sizeof(*a)) == 0) |
ed4a6a7c MR |
2472 | newstate->wm.need_postvbl_update = false; |
2473 | ||
2474 | return 0; | |
2475 | } | |
2476 | ||
0b2ae6d7 VS |
2477 | /* |
2478 | * Merge the watermarks from all active pipes for a specific level. | |
2479 | */ | |
2480 | static void ilk_merge_wm_level(struct drm_device *dev, | |
2481 | int level, | |
2482 | struct intel_wm_level *ret_wm) | |
2483 | { | |
2484 | const struct intel_crtc *intel_crtc; | |
2485 | ||
d52fea5b VS |
2486 | ret_wm->enable = true; |
2487 | ||
d3fcc808 | 2488 | for_each_intel_crtc(dev, intel_crtc) { |
ed4a6a7c | 2489 | const struct intel_pipe_wm *active = &intel_crtc->wm.active.ilk; |
fe392efd VS |
2490 | const struct intel_wm_level *wm = &active->wm[level]; |
2491 | ||
2492 | if (!active->pipe_enabled) | |
2493 | continue; | |
0b2ae6d7 | 2494 | |
d52fea5b VS |
2495 | /* |
2496 | * The watermark values may have been used in the past, | |
2497 | * so we must maintain them in the registers for some | |
2498 | * time even if the level is now disabled. | |
2499 | */ | |
0b2ae6d7 | 2500 | if (!wm->enable) |
d52fea5b | 2501 | ret_wm->enable = false; |
0b2ae6d7 VS |
2502 | |
2503 | ret_wm->pri_val = max(ret_wm->pri_val, wm->pri_val); | |
2504 | ret_wm->spr_val = max(ret_wm->spr_val, wm->spr_val); | |
2505 | ret_wm->cur_val = max(ret_wm->cur_val, wm->cur_val); | |
2506 | ret_wm->fbc_val = max(ret_wm->fbc_val, wm->fbc_val); | |
2507 | } | |
0b2ae6d7 VS |
2508 | } |
2509 | ||
2510 | /* | |
2511 | * Merge all low power watermarks for all active pipes. | |
2512 | */ | |
2513 | static void ilk_wm_merge(struct drm_device *dev, | |
0ba22e26 | 2514 | const struct intel_wm_config *config, |
820c1980 | 2515 | const struct ilk_wm_maximums *max, |
0b2ae6d7 VS |
2516 | struct intel_pipe_wm *merged) |
2517 | { | |
fac5e23e | 2518 | struct drm_i915_private *dev_priv = to_i915(dev); |
0b2ae6d7 | 2519 | int level, max_level = ilk_wm_max_level(dev); |
d52fea5b | 2520 | int last_enabled_level = max_level; |
0b2ae6d7 | 2521 | |
0ba22e26 VS |
2522 | /* ILK/SNB/IVB: LP1+ watermarks only w/ single pipe */ |
2523 | if ((INTEL_INFO(dev)->gen <= 6 || IS_IVYBRIDGE(dev)) && | |
2524 | config->num_pipes_active > 1) | |
1204d5ba | 2525 | last_enabled_level = 0; |
0ba22e26 | 2526 | |
6c8b6c28 VS |
2527 | /* ILK: FBC WM must be disabled always */ |
2528 | merged->fbc_wm_enabled = INTEL_INFO(dev)->gen >= 6; | |
0b2ae6d7 VS |
2529 | |
2530 | /* merge each WM1+ level */ | |
2531 | for (level = 1; level <= max_level; level++) { | |
2532 | struct intel_wm_level *wm = &merged->wm[level]; | |
2533 | ||
2534 | ilk_merge_wm_level(dev, level, wm); | |
2535 | ||
d52fea5b VS |
2536 | if (level > last_enabled_level) |
2537 | wm->enable = false; | |
2538 | else if (!ilk_validate_wm_level(level, max, wm)) | |
2539 | /* make sure all following levels get disabled */ | |
2540 | last_enabled_level = level - 1; | |
0b2ae6d7 VS |
2541 | |
2542 | /* | |
2543 | * The spec says it is preferred to disable | |
2544 | * FBC WMs instead of disabling a WM level. | |
2545 | */ | |
2546 | if (wm->fbc_val > max->fbc) { | |
d52fea5b VS |
2547 | if (wm->enable) |
2548 | merged->fbc_wm_enabled = false; | |
0b2ae6d7 VS |
2549 | wm->fbc_val = 0; |
2550 | } | |
2551 | } | |
6c8b6c28 VS |
2552 | |
2553 | /* ILK: LP2+ must be disabled when FBC WM is disabled but FBC enabled */ | |
2554 | /* | |
2555 | * FIXME this is racy. FBC might get enabled later. | |
2556 | * What we should check here is whether FBC can be | |
2557 | * enabled sometime later. | |
2558 | */ | |
7733b49b | 2559 | if (IS_GEN5(dev) && !merged->fbc_wm_enabled && |
0e631adc | 2560 | intel_fbc_is_active(dev_priv)) { |
6c8b6c28 VS |
2561 | for (level = 2; level <= max_level; level++) { |
2562 | struct intel_wm_level *wm = &merged->wm[level]; | |
2563 | ||
2564 | wm->enable = false; | |
2565 | } | |
2566 | } | |
0b2ae6d7 VS |
2567 | } |
2568 | ||
b380ca3c VS |
2569 | static int ilk_wm_lp_to_level(int wm_lp, const struct intel_pipe_wm *pipe_wm) |
2570 | { | |
2571 | /* LP1,LP2,LP3 levels are either 1,2,3 or 1,3,4 */ | |
2572 | return wm_lp + (wm_lp >= 2 && pipe_wm->wm[4].enable); | |
2573 | } | |
2574 | ||
a68d68ee VS |
2575 | /* The value we need to program into the WM_LPx latency field */ |
2576 | static unsigned int ilk_wm_lp_latency(struct drm_device *dev, int level) | |
2577 | { | |
fac5e23e | 2578 | struct drm_i915_private *dev_priv = to_i915(dev); |
a68d68ee | 2579 | |
a42a5719 | 2580 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
a68d68ee VS |
2581 | return 2 * level; |
2582 | else | |
2583 | return dev_priv->wm.pri_latency[level]; | |
2584 | } | |
2585 | ||
820c1980 | 2586 | static void ilk_compute_wm_results(struct drm_device *dev, |
0362c781 | 2587 | const struct intel_pipe_wm *merged, |
609cedef | 2588 | enum intel_ddb_partitioning partitioning, |
820c1980 | 2589 | struct ilk_wm_values *results) |
801bcfff | 2590 | { |
0b2ae6d7 VS |
2591 | struct intel_crtc *intel_crtc; |
2592 | int level, wm_lp; | |
cca32e9a | 2593 | |
0362c781 | 2594 | results->enable_fbc_wm = merged->fbc_wm_enabled; |
609cedef | 2595 | results->partitioning = partitioning; |
cca32e9a | 2596 | |
0b2ae6d7 | 2597 | /* LP1+ register values */ |
cca32e9a | 2598 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { |
1fd527cc | 2599 | const struct intel_wm_level *r; |
801bcfff | 2600 | |
b380ca3c | 2601 | level = ilk_wm_lp_to_level(wm_lp, merged); |
0b2ae6d7 | 2602 | |
0362c781 | 2603 | r = &merged->wm[level]; |
cca32e9a | 2604 | |
d52fea5b VS |
2605 | /* |
2606 | * Maintain the watermark values even if the level is | |
2607 | * disabled. Doing otherwise could cause underruns. | |
2608 | */ | |
2609 | results->wm_lp[wm_lp - 1] = | |
a68d68ee | 2610 | (ilk_wm_lp_latency(dev, level) << WM1_LP_LATENCY_SHIFT) | |
416f4727 VS |
2611 | (r->pri_val << WM1_LP_SR_SHIFT) | |
2612 | r->cur_val; | |
2613 | ||
d52fea5b VS |
2614 | if (r->enable) |
2615 | results->wm_lp[wm_lp - 1] |= WM1_LP_SR_EN; | |
2616 | ||
416f4727 VS |
2617 | if (INTEL_INFO(dev)->gen >= 8) |
2618 | results->wm_lp[wm_lp - 1] |= | |
2619 | r->fbc_val << WM1_LP_FBC_SHIFT_BDW; | |
2620 | else | |
2621 | results->wm_lp[wm_lp - 1] |= | |
2622 | r->fbc_val << WM1_LP_FBC_SHIFT; | |
2623 | ||
d52fea5b VS |
2624 | /* |
2625 | * Always set WM1S_LP_EN when spr_val != 0, even if the | |
2626 | * level is disabled. Doing otherwise could cause underruns. | |
2627 | */ | |
6cef2b8a VS |
2628 | if (INTEL_INFO(dev)->gen <= 6 && r->spr_val) { |
2629 | WARN_ON(wm_lp != 1); | |
2630 | results->wm_lp_spr[wm_lp - 1] = WM1S_LP_EN | r->spr_val; | |
2631 | } else | |
2632 | results->wm_lp_spr[wm_lp - 1] = r->spr_val; | |
cca32e9a | 2633 | } |
801bcfff | 2634 | |
0b2ae6d7 | 2635 | /* LP0 register values */ |
d3fcc808 | 2636 | for_each_intel_crtc(dev, intel_crtc) { |
0b2ae6d7 | 2637 | enum pipe pipe = intel_crtc->pipe; |
ed4a6a7c MR |
2638 | const struct intel_wm_level *r = |
2639 | &intel_crtc->wm.active.ilk.wm[0]; | |
0b2ae6d7 VS |
2640 | |
2641 | if (WARN_ON(!r->enable)) | |
2642 | continue; | |
2643 | ||
ed4a6a7c | 2644 | results->wm_linetime[pipe] = intel_crtc->wm.active.ilk.linetime; |
1011d8c4 | 2645 | |
0b2ae6d7 VS |
2646 | results->wm_pipe[pipe] = |
2647 | (r->pri_val << WM0_PIPE_PLANE_SHIFT) | | |
2648 | (r->spr_val << WM0_PIPE_SPRITE_SHIFT) | | |
2649 | r->cur_val; | |
801bcfff PZ |
2650 | } |
2651 | } | |
2652 | ||
861f3389 PZ |
2653 | /* Find the result with the highest level enabled. Check for enable_fbc_wm in |
2654 | * case both are at the same level. Prefer r1 in case they're the same. */ | |
820c1980 | 2655 | static struct intel_pipe_wm *ilk_find_best_result(struct drm_device *dev, |
198a1e9b VS |
2656 | struct intel_pipe_wm *r1, |
2657 | struct intel_pipe_wm *r2) | |
861f3389 | 2658 | { |
198a1e9b VS |
2659 | int level, max_level = ilk_wm_max_level(dev); |
2660 | int level1 = 0, level2 = 0; | |
861f3389 | 2661 | |
198a1e9b VS |
2662 | for (level = 1; level <= max_level; level++) { |
2663 | if (r1->wm[level].enable) | |
2664 | level1 = level; | |
2665 | if (r2->wm[level].enable) | |
2666 | level2 = level; | |
861f3389 PZ |
2667 | } |
2668 | ||
198a1e9b VS |
2669 | if (level1 == level2) { |
2670 | if (r2->fbc_wm_enabled && !r1->fbc_wm_enabled) | |
861f3389 PZ |
2671 | return r2; |
2672 | else | |
2673 | return r1; | |
198a1e9b | 2674 | } else if (level1 > level2) { |
861f3389 PZ |
2675 | return r1; |
2676 | } else { | |
2677 | return r2; | |
2678 | } | |
2679 | } | |
2680 | ||
49a687c4 VS |
2681 | /* dirty bits used to track which watermarks need changes */ |
2682 | #define WM_DIRTY_PIPE(pipe) (1 << (pipe)) | |
2683 | #define WM_DIRTY_LINETIME(pipe) (1 << (8 + (pipe))) | |
2684 | #define WM_DIRTY_LP(wm_lp) (1 << (15 + (wm_lp))) | |
2685 | #define WM_DIRTY_LP_ALL (WM_DIRTY_LP(1) | WM_DIRTY_LP(2) | WM_DIRTY_LP(3)) | |
2686 | #define WM_DIRTY_FBC (1 << 24) | |
2687 | #define WM_DIRTY_DDB (1 << 25) | |
2688 | ||
055e393f | 2689 | static unsigned int ilk_compute_wm_dirty(struct drm_i915_private *dev_priv, |
820c1980 ID |
2690 | const struct ilk_wm_values *old, |
2691 | const struct ilk_wm_values *new) | |
49a687c4 VS |
2692 | { |
2693 | unsigned int dirty = 0; | |
2694 | enum pipe pipe; | |
2695 | int wm_lp; | |
2696 | ||
055e393f | 2697 | for_each_pipe(dev_priv, pipe) { |
49a687c4 VS |
2698 | if (old->wm_linetime[pipe] != new->wm_linetime[pipe]) { |
2699 | dirty |= WM_DIRTY_LINETIME(pipe); | |
2700 | /* Must disable LP1+ watermarks too */ | |
2701 | dirty |= WM_DIRTY_LP_ALL; | |
2702 | } | |
2703 | ||
2704 | if (old->wm_pipe[pipe] != new->wm_pipe[pipe]) { | |
2705 | dirty |= WM_DIRTY_PIPE(pipe); | |
2706 | /* Must disable LP1+ watermarks too */ | |
2707 | dirty |= WM_DIRTY_LP_ALL; | |
2708 | } | |
2709 | } | |
2710 | ||
2711 | if (old->enable_fbc_wm != new->enable_fbc_wm) { | |
2712 | dirty |= WM_DIRTY_FBC; | |
2713 | /* Must disable LP1+ watermarks too */ | |
2714 | dirty |= WM_DIRTY_LP_ALL; | |
2715 | } | |
2716 | ||
2717 | if (old->partitioning != new->partitioning) { | |
2718 | dirty |= WM_DIRTY_DDB; | |
2719 | /* Must disable LP1+ watermarks too */ | |
2720 | dirty |= WM_DIRTY_LP_ALL; | |
2721 | } | |
2722 | ||
2723 | /* LP1+ watermarks already deemed dirty, no need to continue */ | |
2724 | if (dirty & WM_DIRTY_LP_ALL) | |
2725 | return dirty; | |
2726 | ||
2727 | /* Find the lowest numbered LP1+ watermark in need of an update... */ | |
2728 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { | |
2729 | if (old->wm_lp[wm_lp - 1] != new->wm_lp[wm_lp - 1] || | |
2730 | old->wm_lp_spr[wm_lp - 1] != new->wm_lp_spr[wm_lp - 1]) | |
2731 | break; | |
2732 | } | |
2733 | ||
2734 | /* ...and mark it and all higher numbered LP1+ watermarks as dirty */ | |
2735 | for (; wm_lp <= 3; wm_lp++) | |
2736 | dirty |= WM_DIRTY_LP(wm_lp); | |
2737 | ||
2738 | return dirty; | |
2739 | } | |
2740 | ||
8553c18e VS |
2741 | static bool _ilk_disable_lp_wm(struct drm_i915_private *dev_priv, |
2742 | unsigned int dirty) | |
801bcfff | 2743 | { |
820c1980 | 2744 | struct ilk_wm_values *previous = &dev_priv->wm.hw; |
8553c18e | 2745 | bool changed = false; |
801bcfff | 2746 | |
facd619b VS |
2747 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] & WM1_LP_SR_EN) { |
2748 | previous->wm_lp[2] &= ~WM1_LP_SR_EN; | |
2749 | I915_WRITE(WM3_LP_ILK, previous->wm_lp[2]); | |
8553c18e | 2750 | changed = true; |
facd619b VS |
2751 | } |
2752 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] & WM1_LP_SR_EN) { | |
2753 | previous->wm_lp[1] &= ~WM1_LP_SR_EN; | |
2754 | I915_WRITE(WM2_LP_ILK, previous->wm_lp[1]); | |
8553c18e | 2755 | changed = true; |
facd619b VS |
2756 | } |
2757 | if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] & WM1_LP_SR_EN) { | |
2758 | previous->wm_lp[0] &= ~WM1_LP_SR_EN; | |
2759 | I915_WRITE(WM1_LP_ILK, previous->wm_lp[0]); | |
8553c18e | 2760 | changed = true; |
facd619b | 2761 | } |
801bcfff | 2762 | |
facd619b VS |
2763 | /* |
2764 | * Don't touch WM1S_LP_EN here. | |
2765 | * Doing so could cause underruns. | |
2766 | */ | |
6cef2b8a | 2767 | |
8553c18e VS |
2768 | return changed; |
2769 | } | |
2770 | ||
2771 | /* | |
2772 | * The spec says we shouldn't write when we don't need, because every write | |
2773 | * causes WMs to be re-evaluated, expending some power. | |
2774 | */ | |
820c1980 ID |
2775 | static void ilk_write_wm_values(struct drm_i915_private *dev_priv, |
2776 | struct ilk_wm_values *results) | |
8553c18e | 2777 | { |
91c8a326 | 2778 | struct drm_device *dev = &dev_priv->drm; |
820c1980 | 2779 | struct ilk_wm_values *previous = &dev_priv->wm.hw; |
8553c18e VS |
2780 | unsigned int dirty; |
2781 | uint32_t val; | |
2782 | ||
055e393f | 2783 | dirty = ilk_compute_wm_dirty(dev_priv, previous, results); |
8553c18e VS |
2784 | if (!dirty) |
2785 | return; | |
2786 | ||
2787 | _ilk_disable_lp_wm(dev_priv, dirty); | |
2788 | ||
49a687c4 | 2789 | if (dirty & WM_DIRTY_PIPE(PIPE_A)) |
801bcfff | 2790 | I915_WRITE(WM0_PIPEA_ILK, results->wm_pipe[0]); |
49a687c4 | 2791 | if (dirty & WM_DIRTY_PIPE(PIPE_B)) |
801bcfff | 2792 | I915_WRITE(WM0_PIPEB_ILK, results->wm_pipe[1]); |
49a687c4 | 2793 | if (dirty & WM_DIRTY_PIPE(PIPE_C)) |
801bcfff PZ |
2794 | I915_WRITE(WM0_PIPEC_IVB, results->wm_pipe[2]); |
2795 | ||
49a687c4 | 2796 | if (dirty & WM_DIRTY_LINETIME(PIPE_A)) |
801bcfff | 2797 | I915_WRITE(PIPE_WM_LINETIME(PIPE_A), results->wm_linetime[0]); |
49a687c4 | 2798 | if (dirty & WM_DIRTY_LINETIME(PIPE_B)) |
801bcfff | 2799 | I915_WRITE(PIPE_WM_LINETIME(PIPE_B), results->wm_linetime[1]); |
49a687c4 | 2800 | if (dirty & WM_DIRTY_LINETIME(PIPE_C)) |
801bcfff PZ |
2801 | I915_WRITE(PIPE_WM_LINETIME(PIPE_C), results->wm_linetime[2]); |
2802 | ||
49a687c4 | 2803 | if (dirty & WM_DIRTY_DDB) { |
a42a5719 | 2804 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
ac9545fd VS |
2805 | val = I915_READ(WM_MISC); |
2806 | if (results->partitioning == INTEL_DDB_PART_1_2) | |
2807 | val &= ~WM_MISC_DATA_PARTITION_5_6; | |
2808 | else | |
2809 | val |= WM_MISC_DATA_PARTITION_5_6; | |
2810 | I915_WRITE(WM_MISC, val); | |
2811 | } else { | |
2812 | val = I915_READ(DISP_ARB_CTL2); | |
2813 | if (results->partitioning == INTEL_DDB_PART_1_2) | |
2814 | val &= ~DISP_DATA_PARTITION_5_6; | |
2815 | else | |
2816 | val |= DISP_DATA_PARTITION_5_6; | |
2817 | I915_WRITE(DISP_ARB_CTL2, val); | |
2818 | } | |
1011d8c4 PZ |
2819 | } |
2820 | ||
49a687c4 | 2821 | if (dirty & WM_DIRTY_FBC) { |
cca32e9a PZ |
2822 | val = I915_READ(DISP_ARB_CTL); |
2823 | if (results->enable_fbc_wm) | |
2824 | val &= ~DISP_FBC_WM_DIS; | |
2825 | else | |
2826 | val |= DISP_FBC_WM_DIS; | |
2827 | I915_WRITE(DISP_ARB_CTL, val); | |
2828 | } | |
2829 | ||
954911eb ID |
2830 | if (dirty & WM_DIRTY_LP(1) && |
2831 | previous->wm_lp_spr[0] != results->wm_lp_spr[0]) | |
2832 | I915_WRITE(WM1S_LP_ILK, results->wm_lp_spr[0]); | |
2833 | ||
2834 | if (INTEL_INFO(dev)->gen >= 7) { | |
6cef2b8a VS |
2835 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp_spr[1] != results->wm_lp_spr[1]) |
2836 | I915_WRITE(WM2S_LP_IVB, results->wm_lp_spr[1]); | |
2837 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp_spr[2] != results->wm_lp_spr[2]) | |
2838 | I915_WRITE(WM3S_LP_IVB, results->wm_lp_spr[2]); | |
2839 | } | |
801bcfff | 2840 | |
facd619b | 2841 | if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] != results->wm_lp[0]) |
801bcfff | 2842 | I915_WRITE(WM1_LP_ILK, results->wm_lp[0]); |
facd619b | 2843 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] != results->wm_lp[1]) |
801bcfff | 2844 | I915_WRITE(WM2_LP_ILK, results->wm_lp[1]); |
facd619b | 2845 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] != results->wm_lp[2]) |
801bcfff | 2846 | I915_WRITE(WM3_LP_ILK, results->wm_lp[2]); |
609cedef VS |
2847 | |
2848 | dev_priv->wm.hw = *results; | |
801bcfff PZ |
2849 | } |
2850 | ||
ed4a6a7c | 2851 | bool ilk_disable_lp_wm(struct drm_device *dev) |
8553c18e | 2852 | { |
fac5e23e | 2853 | struct drm_i915_private *dev_priv = to_i915(dev); |
8553c18e VS |
2854 | |
2855 | return _ilk_disable_lp_wm(dev_priv, WM_DIRTY_LP_ALL); | |
2856 | } | |
2857 | ||
656d1b89 | 2858 | #define SKL_SAGV_BLOCK_TIME 30 /* µs */ |
b9cec075 | 2859 | |
024c9045 MR |
2860 | /* |
2861 | * Return the index of a plane in the SKL DDB and wm result arrays. Primary | |
2862 | * plane is always in slot 0, cursor is always in slot I915_MAX_PLANES-1, and | |
2863 | * other universal planes are in indices 1..n. Note that this may leave unused | |
2864 | * indices between the top "sprite" plane and the cursor. | |
2865 | */ | |
2866 | static int | |
2867 | skl_wm_plane_id(const struct intel_plane *plane) | |
2868 | { | |
2869 | switch (plane->base.type) { | |
2870 | case DRM_PLANE_TYPE_PRIMARY: | |
2871 | return 0; | |
2872 | case DRM_PLANE_TYPE_CURSOR: | |
2873 | return PLANE_CURSOR; | |
2874 | case DRM_PLANE_TYPE_OVERLAY: | |
2875 | return plane->plane + 1; | |
2876 | default: | |
2877 | MISSING_CASE(plane->base.type); | |
2878 | return plane->plane; | |
2879 | } | |
2880 | } | |
2881 | ||
56feca91 PZ |
2882 | static bool |
2883 | intel_has_sagv(struct drm_i915_private *dev_priv) | |
2884 | { | |
6e3100ec PZ |
2885 | if (IS_KABYLAKE(dev_priv)) |
2886 | return true; | |
2887 | ||
2888 | if (IS_SKYLAKE(dev_priv) && | |
2889 | dev_priv->sagv_status != I915_SAGV_NOT_CONTROLLED) | |
2890 | return true; | |
2891 | ||
2892 | return false; | |
56feca91 PZ |
2893 | } |
2894 | ||
656d1b89 L |
2895 | /* |
2896 | * SAGV dynamically adjusts the system agent voltage and clock frequencies | |
2897 | * depending on power and performance requirements. The display engine access | |
2898 | * to system memory is blocked during the adjustment time. Because of the | |
2899 | * blocking time, having this enabled can cause full system hangs and/or pipe | |
2900 | * underruns if we don't meet all of the following requirements: | |
2901 | * | |
2902 | * - <= 1 pipe enabled | |
2903 | * - All planes can enable watermarks for latencies >= SAGV engine block time | |
2904 | * - We're not using an interlaced display configuration | |
2905 | */ | |
2906 | int | |
16dcdc4e | 2907 | intel_enable_sagv(struct drm_i915_private *dev_priv) |
656d1b89 L |
2908 | { |
2909 | int ret; | |
2910 | ||
56feca91 PZ |
2911 | if (!intel_has_sagv(dev_priv)) |
2912 | return 0; | |
2913 | ||
2914 | if (dev_priv->sagv_status == I915_SAGV_ENABLED) | |
656d1b89 L |
2915 | return 0; |
2916 | ||
2917 | DRM_DEBUG_KMS("Enabling the SAGV\n"); | |
2918 | mutex_lock(&dev_priv->rps.hw_lock); | |
2919 | ||
2920 | ret = sandybridge_pcode_write(dev_priv, GEN9_PCODE_SAGV_CONTROL, | |
2921 | GEN9_SAGV_ENABLE); | |
2922 | ||
2923 | /* We don't need to wait for the SAGV when enabling */ | |
2924 | mutex_unlock(&dev_priv->rps.hw_lock); | |
2925 | ||
2926 | /* | |
2927 | * Some skl systems, pre-release machines in particular, | |
2928 | * don't actually have an SAGV. | |
2929 | */ | |
6e3100ec | 2930 | if (IS_SKYLAKE(dev_priv) && ret == -ENXIO) { |
656d1b89 | 2931 | DRM_DEBUG_DRIVER("No SAGV found on system, ignoring\n"); |
16dcdc4e | 2932 | dev_priv->sagv_status = I915_SAGV_NOT_CONTROLLED; |
656d1b89 L |
2933 | return 0; |
2934 | } else if (ret < 0) { | |
2935 | DRM_ERROR("Failed to enable the SAGV\n"); | |
2936 | return ret; | |
2937 | } | |
2938 | ||
16dcdc4e | 2939 | dev_priv->sagv_status = I915_SAGV_ENABLED; |
656d1b89 L |
2940 | return 0; |
2941 | } | |
2942 | ||
2943 | static int | |
16dcdc4e | 2944 | intel_do_sagv_disable(struct drm_i915_private *dev_priv) |
656d1b89 L |
2945 | { |
2946 | int ret; | |
2947 | uint32_t temp = GEN9_SAGV_DISABLE; | |
2948 | ||
2949 | ret = sandybridge_pcode_read(dev_priv, GEN9_PCODE_SAGV_CONTROL, | |
2950 | &temp); | |
2951 | if (ret) | |
2952 | return ret; | |
2953 | else | |
2954 | return temp & GEN9_SAGV_IS_DISABLED; | |
2955 | } | |
2956 | ||
2957 | int | |
16dcdc4e | 2958 | intel_disable_sagv(struct drm_i915_private *dev_priv) |
656d1b89 L |
2959 | { |
2960 | int ret, result; | |
2961 | ||
56feca91 PZ |
2962 | if (!intel_has_sagv(dev_priv)) |
2963 | return 0; | |
2964 | ||
2965 | if (dev_priv->sagv_status == I915_SAGV_DISABLED) | |
656d1b89 L |
2966 | return 0; |
2967 | ||
2968 | DRM_DEBUG_KMS("Disabling the SAGV\n"); | |
2969 | mutex_lock(&dev_priv->rps.hw_lock); | |
2970 | ||
2971 | /* bspec says to keep retrying for at least 1 ms */ | |
16dcdc4e | 2972 | ret = wait_for(result = intel_do_sagv_disable(dev_priv), 1); |
656d1b89 L |
2973 | mutex_unlock(&dev_priv->rps.hw_lock); |
2974 | ||
2975 | if (ret == -ETIMEDOUT) { | |
2976 | DRM_ERROR("Request to disable SAGV timed out\n"); | |
2977 | return -ETIMEDOUT; | |
2978 | } | |
2979 | ||
2980 | /* | |
2981 | * Some skl systems, pre-release machines in particular, | |
2982 | * don't actually have an SAGV. | |
2983 | */ | |
6e3100ec | 2984 | if (IS_SKYLAKE(dev_priv) && result == -ENXIO) { |
656d1b89 | 2985 | DRM_DEBUG_DRIVER("No SAGV found on system, ignoring\n"); |
16dcdc4e | 2986 | dev_priv->sagv_status = I915_SAGV_NOT_CONTROLLED; |
656d1b89 L |
2987 | return 0; |
2988 | } else if (result < 0) { | |
2989 | DRM_ERROR("Failed to disable the SAGV\n"); | |
2990 | return result; | |
2991 | } | |
2992 | ||
16dcdc4e | 2993 | dev_priv->sagv_status = I915_SAGV_DISABLED; |
656d1b89 L |
2994 | return 0; |
2995 | } | |
2996 | ||
16dcdc4e | 2997 | bool intel_can_enable_sagv(struct drm_atomic_state *state) |
656d1b89 L |
2998 | { |
2999 | struct drm_device *dev = state->dev; | |
3000 | struct drm_i915_private *dev_priv = to_i915(dev); | |
3001 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
3002 | struct drm_crtc *crtc; | |
3003 | enum pipe pipe; | |
3004 | int level, plane; | |
3005 | ||
56feca91 PZ |
3006 | if (!intel_has_sagv(dev_priv)) |
3007 | return false; | |
3008 | ||
656d1b89 L |
3009 | /* |
3010 | * SKL workaround: bspec recommends we disable the SAGV when we have | |
3011 | * more then one pipe enabled | |
3012 | * | |
3013 | * If there are no active CRTCs, no additional checks need be performed | |
3014 | */ | |
3015 | if (hweight32(intel_state->active_crtcs) == 0) | |
3016 | return true; | |
3017 | else if (hweight32(intel_state->active_crtcs) > 1) | |
3018 | return false; | |
3019 | ||
3020 | /* Since we're now guaranteed to only have one active CRTC... */ | |
3021 | pipe = ffs(intel_state->active_crtcs) - 1; | |
3022 | crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
3023 | ||
3024 | if (crtc->state->mode.flags & DRM_MODE_FLAG_INTERLACE) | |
3025 | return false; | |
3026 | ||
3027 | for_each_plane(dev_priv, pipe, plane) { | |
3028 | /* Skip this plane if it's not enabled */ | |
3029 | if (intel_state->wm_results.plane[pipe][plane][0] == 0) | |
3030 | continue; | |
3031 | ||
3032 | /* Find the highest enabled wm level for this plane */ | |
3033 | for (level = ilk_wm_max_level(dev); | |
3034 | intel_state->wm_results.plane[pipe][plane][level] == 0; --level) | |
3035 | { } | |
3036 | ||
3037 | /* | |
3038 | * If any of the planes on this pipe don't enable wm levels | |
3039 | * that incur memory latencies higher then 30µs we can't enable | |
3040 | * the SAGV | |
3041 | */ | |
3042 | if (dev_priv->wm.skl_latency[level] < SKL_SAGV_BLOCK_TIME) | |
3043 | return false; | |
3044 | } | |
3045 | ||
3046 | return true; | |
3047 | } | |
3048 | ||
b9cec075 DL |
3049 | static void |
3050 | skl_ddb_get_pipe_allocation_limits(struct drm_device *dev, | |
024c9045 | 3051 | const struct intel_crtc_state *cstate, |
c107acfe MR |
3052 | struct skl_ddb_entry *alloc, /* out */ |
3053 | int *num_active /* out */) | |
b9cec075 | 3054 | { |
c107acfe MR |
3055 | struct drm_atomic_state *state = cstate->base.state; |
3056 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
3057 | struct drm_i915_private *dev_priv = to_i915(dev); | |
024c9045 | 3058 | struct drm_crtc *for_crtc = cstate->base.crtc; |
b9cec075 DL |
3059 | unsigned int pipe_size, ddb_size; |
3060 | int nth_active_pipe; | |
c107acfe MR |
3061 | int pipe = to_intel_crtc(for_crtc)->pipe; |
3062 | ||
a6d3460e | 3063 | if (WARN_ON(!state) || !cstate->base.active) { |
b9cec075 DL |
3064 | alloc->start = 0; |
3065 | alloc->end = 0; | |
a6d3460e | 3066 | *num_active = hweight32(dev_priv->active_crtcs); |
b9cec075 DL |
3067 | return; |
3068 | } | |
3069 | ||
a6d3460e MR |
3070 | if (intel_state->active_pipe_changes) |
3071 | *num_active = hweight32(intel_state->active_crtcs); | |
3072 | else | |
3073 | *num_active = hweight32(dev_priv->active_crtcs); | |
3074 | ||
6f3fff60 D |
3075 | ddb_size = INTEL_INFO(dev_priv)->ddb_size; |
3076 | WARN_ON(ddb_size == 0); | |
b9cec075 DL |
3077 | |
3078 | ddb_size -= 4; /* 4 blocks for bypass path allocation */ | |
3079 | ||
c107acfe | 3080 | /* |
a6d3460e MR |
3081 | * If the state doesn't change the active CRTC's, then there's |
3082 | * no need to recalculate; the existing pipe allocation limits | |
3083 | * should remain unchanged. Note that we're safe from racing | |
3084 | * commits since any racing commit that changes the active CRTC | |
3085 | * list would need to grab _all_ crtc locks, including the one | |
3086 | * we currently hold. | |
c107acfe | 3087 | */ |
a6d3460e MR |
3088 | if (!intel_state->active_pipe_changes) { |
3089 | *alloc = dev_priv->wm.skl_hw.ddb.pipe[pipe]; | |
3090 | return; | |
c107acfe | 3091 | } |
a6d3460e MR |
3092 | |
3093 | nth_active_pipe = hweight32(intel_state->active_crtcs & | |
3094 | (drm_crtc_mask(for_crtc) - 1)); | |
3095 | pipe_size = ddb_size / hweight32(intel_state->active_crtcs); | |
3096 | alloc->start = nth_active_pipe * ddb_size / *num_active; | |
3097 | alloc->end = alloc->start + pipe_size; | |
b9cec075 DL |
3098 | } |
3099 | ||
c107acfe | 3100 | static unsigned int skl_cursor_allocation(int num_active) |
b9cec075 | 3101 | { |
c107acfe | 3102 | if (num_active == 1) |
b9cec075 DL |
3103 | return 32; |
3104 | ||
3105 | return 8; | |
3106 | } | |
3107 | ||
a269c583 DL |
3108 | static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg) |
3109 | { | |
3110 | entry->start = reg & 0x3ff; | |
3111 | entry->end = (reg >> 16) & 0x3ff; | |
16160e3d DL |
3112 | if (entry->end) |
3113 | entry->end += 1; | |
a269c583 DL |
3114 | } |
3115 | ||
08db6652 DL |
3116 | void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv, |
3117 | struct skl_ddb_allocation *ddb /* out */) | |
a269c583 | 3118 | { |
a269c583 DL |
3119 | enum pipe pipe; |
3120 | int plane; | |
3121 | u32 val; | |
3122 | ||
b10f1b20 ML |
3123 | memset(ddb, 0, sizeof(*ddb)); |
3124 | ||
a269c583 | 3125 | for_each_pipe(dev_priv, pipe) { |
4d800030 ID |
3126 | enum intel_display_power_domain power_domain; |
3127 | ||
3128 | power_domain = POWER_DOMAIN_PIPE(pipe); | |
3129 | if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) | |
b10f1b20 ML |
3130 | continue; |
3131 | ||
dd740780 | 3132 | for_each_plane(dev_priv, pipe, plane) { |
a269c583 DL |
3133 | val = I915_READ(PLANE_BUF_CFG(pipe, plane)); |
3134 | skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane], | |
3135 | val); | |
3136 | } | |
3137 | ||
3138 | val = I915_READ(CUR_BUF_CFG(pipe)); | |
4969d33e MR |
3139 | skl_ddb_entry_init_from_hw(&ddb->plane[pipe][PLANE_CURSOR], |
3140 | val); | |
4d800030 ID |
3141 | |
3142 | intel_display_power_put(dev_priv, power_domain); | |
a269c583 DL |
3143 | } |
3144 | } | |
3145 | ||
9c2f7a9d KM |
3146 | /* |
3147 | * Determines the downscale amount of a plane for the purposes of watermark calculations. | |
3148 | * The bspec defines downscale amount as: | |
3149 | * | |
3150 | * """ | |
3151 | * Horizontal down scale amount = maximum[1, Horizontal source size / | |
3152 | * Horizontal destination size] | |
3153 | * Vertical down scale amount = maximum[1, Vertical source size / | |
3154 | * Vertical destination size] | |
3155 | * Total down scale amount = Horizontal down scale amount * | |
3156 | * Vertical down scale amount | |
3157 | * """ | |
3158 | * | |
3159 | * Return value is provided in 16.16 fixed point form to retain fractional part. | |
3160 | * Caller should take care of dividing & rounding off the value. | |
3161 | */ | |
3162 | static uint32_t | |
3163 | skl_plane_downscale_amount(const struct intel_plane_state *pstate) | |
3164 | { | |
3165 | uint32_t downscale_h, downscale_w; | |
3166 | uint32_t src_w, src_h, dst_w, dst_h; | |
3167 | ||
936e71e3 | 3168 | if (WARN_ON(!pstate->base.visible)) |
9c2f7a9d KM |
3169 | return DRM_PLANE_HELPER_NO_SCALING; |
3170 | ||
3171 | /* n.b., src is 16.16 fixed point, dst is whole integer */ | |
936e71e3 VS |
3172 | src_w = drm_rect_width(&pstate->base.src); |
3173 | src_h = drm_rect_height(&pstate->base.src); | |
3174 | dst_w = drm_rect_width(&pstate->base.dst); | |
3175 | dst_h = drm_rect_height(&pstate->base.dst); | |
9c2f7a9d KM |
3176 | if (intel_rotation_90_or_270(pstate->base.rotation)) |
3177 | swap(dst_w, dst_h); | |
3178 | ||
3179 | downscale_h = max(src_h / dst_h, (uint32_t)DRM_PLANE_HELPER_NO_SCALING); | |
3180 | downscale_w = max(src_w / dst_w, (uint32_t)DRM_PLANE_HELPER_NO_SCALING); | |
3181 | ||
3182 | /* Provide result in 16.16 fixed point */ | |
3183 | return (uint64_t)downscale_w * downscale_h >> 16; | |
3184 | } | |
3185 | ||
b9cec075 | 3186 | static unsigned int |
024c9045 MR |
3187 | skl_plane_relative_data_rate(const struct intel_crtc_state *cstate, |
3188 | const struct drm_plane_state *pstate, | |
3189 | int y) | |
b9cec075 | 3190 | { |
a280f7dd | 3191 | struct intel_plane_state *intel_pstate = to_intel_plane_state(pstate); |
024c9045 | 3192 | struct drm_framebuffer *fb = pstate->fb; |
8d19d7d9 | 3193 | uint32_t down_scale_amount, data_rate; |
a280f7dd | 3194 | uint32_t width = 0, height = 0; |
a1de91e5 MR |
3195 | unsigned format = fb ? fb->pixel_format : DRM_FORMAT_XRGB8888; |
3196 | ||
936e71e3 | 3197 | if (!intel_pstate->base.visible) |
a1de91e5 MR |
3198 | return 0; |
3199 | if (pstate->plane->type == DRM_PLANE_TYPE_CURSOR) | |
3200 | return 0; | |
3201 | if (y && format != DRM_FORMAT_NV12) | |
3202 | return 0; | |
a280f7dd | 3203 | |
936e71e3 VS |
3204 | width = drm_rect_width(&intel_pstate->base.src) >> 16; |
3205 | height = drm_rect_height(&intel_pstate->base.src) >> 16; | |
a280f7dd KM |
3206 | |
3207 | if (intel_rotation_90_or_270(pstate->rotation)) | |
3208 | swap(width, height); | |
2cd601c6 CK |
3209 | |
3210 | /* for planar format */ | |
a1de91e5 | 3211 | if (format == DRM_FORMAT_NV12) { |
2cd601c6 | 3212 | if (y) /* y-plane data rate */ |
8d19d7d9 | 3213 | data_rate = width * height * |
a1de91e5 | 3214 | drm_format_plane_cpp(format, 0); |
2cd601c6 | 3215 | else /* uv-plane data rate */ |
8d19d7d9 | 3216 | data_rate = (width / 2) * (height / 2) * |
a1de91e5 | 3217 | drm_format_plane_cpp(format, 1); |
8d19d7d9 KM |
3218 | } else { |
3219 | /* for packed formats */ | |
3220 | data_rate = width * height * drm_format_plane_cpp(format, 0); | |
2cd601c6 CK |
3221 | } |
3222 | ||
8d19d7d9 KM |
3223 | down_scale_amount = skl_plane_downscale_amount(intel_pstate); |
3224 | ||
3225 | return (uint64_t)data_rate * down_scale_amount >> 16; | |
b9cec075 DL |
3226 | } |
3227 | ||
3228 | /* | |
3229 | * We don't overflow 32 bits. Worst case is 3 planes enabled, each fetching | |
3230 | * a 8192x4096@32bpp framebuffer: | |
3231 | * 3 * 4096 * 8192 * 4 < 2^32 | |
3232 | */ | |
3233 | static unsigned int | |
9c74d826 | 3234 | skl_get_total_relative_data_rate(struct intel_crtc_state *intel_cstate) |
b9cec075 | 3235 | { |
9c74d826 MR |
3236 | struct drm_crtc_state *cstate = &intel_cstate->base; |
3237 | struct drm_atomic_state *state = cstate->state; | |
3238 | struct drm_crtc *crtc = cstate->crtc; | |
3239 | struct drm_device *dev = crtc->dev; | |
3240 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
a6d3460e | 3241 | const struct drm_plane *plane; |
024c9045 | 3242 | const struct intel_plane *intel_plane; |
a6d3460e | 3243 | struct drm_plane_state *pstate; |
a1de91e5 | 3244 | unsigned int rate, total_data_rate = 0; |
9c74d826 | 3245 | int id; |
a6d3460e MR |
3246 | int i; |
3247 | ||
3248 | if (WARN_ON(!state)) | |
3249 | return 0; | |
b9cec075 | 3250 | |
a1de91e5 | 3251 | /* Calculate and cache data rate for each plane */ |
a6d3460e MR |
3252 | for_each_plane_in_state(state, plane, pstate, i) { |
3253 | id = skl_wm_plane_id(to_intel_plane(plane)); | |
3254 | intel_plane = to_intel_plane(plane); | |
3255 | ||
3256 | if (intel_plane->pipe != intel_crtc->pipe) | |
3257 | continue; | |
3258 | ||
3259 | /* packed/uv */ | |
3260 | rate = skl_plane_relative_data_rate(intel_cstate, | |
3261 | pstate, 0); | |
3262 | intel_cstate->wm.skl.plane_data_rate[id] = rate; | |
3263 | ||
3264 | /* y-plane */ | |
3265 | rate = skl_plane_relative_data_rate(intel_cstate, | |
3266 | pstate, 1); | |
3267 | intel_cstate->wm.skl.plane_y_data_rate[id] = rate; | |
a1de91e5 | 3268 | } |
024c9045 | 3269 | |
a1de91e5 MR |
3270 | /* Calculate CRTC's total data rate from cached values */ |
3271 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { | |
3272 | int id = skl_wm_plane_id(intel_plane); | |
024c9045 | 3273 | |
a1de91e5 | 3274 | /* packed/uv */ |
9c74d826 MR |
3275 | total_data_rate += intel_cstate->wm.skl.plane_data_rate[id]; |
3276 | total_data_rate += intel_cstate->wm.skl.plane_y_data_rate[id]; | |
b9cec075 DL |
3277 | } |
3278 | ||
3279 | return total_data_rate; | |
3280 | } | |
3281 | ||
cbcfd14b KM |
3282 | static uint16_t |
3283 | skl_ddb_min_alloc(const struct drm_plane_state *pstate, | |
3284 | const int y) | |
3285 | { | |
3286 | struct drm_framebuffer *fb = pstate->fb; | |
3287 | struct intel_plane_state *intel_pstate = to_intel_plane_state(pstate); | |
3288 | uint32_t src_w, src_h; | |
3289 | uint32_t min_scanlines = 8; | |
3290 | uint8_t plane_bpp; | |
3291 | ||
3292 | if (WARN_ON(!fb)) | |
3293 | return 0; | |
3294 | ||
3295 | /* For packed formats, no y-plane, return 0 */ | |
3296 | if (y && fb->pixel_format != DRM_FORMAT_NV12) | |
3297 | return 0; | |
3298 | ||
3299 | /* For Non Y-tile return 8-blocks */ | |
3300 | if (fb->modifier[0] != I915_FORMAT_MOD_Y_TILED && | |
3301 | fb->modifier[0] != I915_FORMAT_MOD_Yf_TILED) | |
3302 | return 8; | |
3303 | ||
936e71e3 VS |
3304 | src_w = drm_rect_width(&intel_pstate->base.src) >> 16; |
3305 | src_h = drm_rect_height(&intel_pstate->base.src) >> 16; | |
cbcfd14b KM |
3306 | |
3307 | if (intel_rotation_90_or_270(pstate->rotation)) | |
3308 | swap(src_w, src_h); | |
3309 | ||
3310 | /* Halve UV plane width and height for NV12 */ | |
3311 | if (fb->pixel_format == DRM_FORMAT_NV12 && !y) { | |
3312 | src_w /= 2; | |
3313 | src_h /= 2; | |
3314 | } | |
3315 | ||
3316 | if (fb->pixel_format == DRM_FORMAT_NV12 && !y) | |
3317 | plane_bpp = drm_format_plane_cpp(fb->pixel_format, 1); | |
3318 | else | |
3319 | plane_bpp = drm_format_plane_cpp(fb->pixel_format, 0); | |
3320 | ||
3321 | if (intel_rotation_90_or_270(pstate->rotation)) { | |
3322 | switch (plane_bpp) { | |
3323 | case 1: | |
3324 | min_scanlines = 32; | |
3325 | break; | |
3326 | case 2: | |
3327 | min_scanlines = 16; | |
3328 | break; | |
3329 | case 4: | |
3330 | min_scanlines = 8; | |
3331 | break; | |
3332 | case 8: | |
3333 | min_scanlines = 4; | |
3334 | break; | |
3335 | default: | |
3336 | WARN(1, "Unsupported pixel depth %u for rotation", | |
3337 | plane_bpp); | |
3338 | min_scanlines = 32; | |
3339 | } | |
3340 | } | |
3341 | ||
3342 | return DIV_ROUND_UP((4 * src_w * plane_bpp), 512) * min_scanlines/4 + 3; | |
3343 | } | |
3344 | ||
c107acfe | 3345 | static int |
024c9045 | 3346 | skl_allocate_pipe_ddb(struct intel_crtc_state *cstate, |
b9cec075 DL |
3347 | struct skl_ddb_allocation *ddb /* out */) |
3348 | { | |
c107acfe | 3349 | struct drm_atomic_state *state = cstate->base.state; |
024c9045 | 3350 | struct drm_crtc *crtc = cstate->base.crtc; |
b9cec075 DL |
3351 | struct drm_device *dev = crtc->dev; |
3352 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
024c9045 | 3353 | struct intel_plane *intel_plane; |
c107acfe MR |
3354 | struct drm_plane *plane; |
3355 | struct drm_plane_state *pstate; | |
b9cec075 | 3356 | enum pipe pipe = intel_crtc->pipe; |
34bb56af | 3357 | struct skl_ddb_entry *alloc = &ddb->pipe[pipe]; |
b9cec075 | 3358 | uint16_t alloc_size, start, cursor_blocks; |
86a2100a MR |
3359 | uint16_t *minimum = cstate->wm.skl.minimum_blocks; |
3360 | uint16_t *y_minimum = cstate->wm.skl.minimum_y_blocks; | |
b9cec075 | 3361 | unsigned int total_data_rate; |
c107acfe MR |
3362 | int num_active; |
3363 | int id, i; | |
b9cec075 | 3364 | |
5a920b85 PZ |
3365 | /* Clear the partitioning for disabled planes. */ |
3366 | memset(ddb->plane[pipe], 0, sizeof(ddb->plane[pipe])); | |
3367 | memset(ddb->y_plane[pipe], 0, sizeof(ddb->y_plane[pipe])); | |
3368 | ||
a6d3460e MR |
3369 | if (WARN_ON(!state)) |
3370 | return 0; | |
3371 | ||
c107acfe MR |
3372 | if (!cstate->base.active) { |
3373 | ddb->pipe[pipe].start = ddb->pipe[pipe].end = 0; | |
c107acfe MR |
3374 | return 0; |
3375 | } | |
3376 | ||
a6d3460e | 3377 | skl_ddb_get_pipe_allocation_limits(dev, cstate, alloc, &num_active); |
34bb56af | 3378 | alloc_size = skl_ddb_entry_size(alloc); |
b9cec075 DL |
3379 | if (alloc_size == 0) { |
3380 | memset(ddb->plane[pipe], 0, sizeof(ddb->plane[pipe])); | |
c107acfe | 3381 | return 0; |
b9cec075 DL |
3382 | } |
3383 | ||
c107acfe | 3384 | cursor_blocks = skl_cursor_allocation(num_active); |
4969d33e MR |
3385 | ddb->plane[pipe][PLANE_CURSOR].start = alloc->end - cursor_blocks; |
3386 | ddb->plane[pipe][PLANE_CURSOR].end = alloc->end; | |
b9cec075 DL |
3387 | |
3388 | alloc_size -= cursor_blocks; | |
b9cec075 | 3389 | |
80958155 | 3390 | /* 1. Allocate the mininum required blocks for each active plane */ |
a6d3460e MR |
3391 | for_each_plane_in_state(state, plane, pstate, i) { |
3392 | intel_plane = to_intel_plane(plane); | |
3393 | id = skl_wm_plane_id(intel_plane); | |
c107acfe | 3394 | |
a6d3460e MR |
3395 | if (intel_plane->pipe != pipe) |
3396 | continue; | |
c107acfe | 3397 | |
936e71e3 | 3398 | if (!to_intel_plane_state(pstate)->base.visible) { |
a6d3460e MR |
3399 | minimum[id] = 0; |
3400 | y_minimum[id] = 0; | |
3401 | continue; | |
3402 | } | |
3403 | if (plane->type == DRM_PLANE_TYPE_CURSOR) { | |
3404 | minimum[id] = 0; | |
3405 | y_minimum[id] = 0; | |
3406 | continue; | |
c107acfe | 3407 | } |
a6d3460e | 3408 | |
cbcfd14b KM |
3409 | minimum[id] = skl_ddb_min_alloc(pstate, 0); |
3410 | y_minimum[id] = skl_ddb_min_alloc(pstate, 1); | |
c107acfe | 3411 | } |
80958155 | 3412 | |
c107acfe MR |
3413 | for (i = 0; i < PLANE_CURSOR; i++) { |
3414 | alloc_size -= minimum[i]; | |
3415 | alloc_size -= y_minimum[i]; | |
80958155 DL |
3416 | } |
3417 | ||
b9cec075 | 3418 | /* |
80958155 DL |
3419 | * 2. Distribute the remaining space in proportion to the amount of |
3420 | * data each plane needs to fetch from memory. | |
b9cec075 DL |
3421 | * |
3422 | * FIXME: we may not allocate every single block here. | |
3423 | */ | |
024c9045 | 3424 | total_data_rate = skl_get_total_relative_data_rate(cstate); |
a1de91e5 | 3425 | if (total_data_rate == 0) |
c107acfe | 3426 | return 0; |
b9cec075 | 3427 | |
34bb56af | 3428 | start = alloc->start; |
024c9045 | 3429 | for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { |
2cd601c6 CK |
3430 | unsigned int data_rate, y_data_rate; |
3431 | uint16_t plane_blocks, y_plane_blocks = 0; | |
024c9045 | 3432 | int id = skl_wm_plane_id(intel_plane); |
b9cec075 | 3433 | |
a1de91e5 | 3434 | data_rate = cstate->wm.skl.plane_data_rate[id]; |
b9cec075 DL |
3435 | |
3436 | /* | |
2cd601c6 | 3437 | * allocation for (packed formats) or (uv-plane part of planar format): |
b9cec075 DL |
3438 | * promote the expression to 64 bits to avoid overflowing, the |
3439 | * result is < available as data_rate / total_data_rate < 1 | |
3440 | */ | |
024c9045 | 3441 | plane_blocks = minimum[id]; |
80958155 DL |
3442 | plane_blocks += div_u64((uint64_t)alloc_size * data_rate, |
3443 | total_data_rate); | |
b9cec075 | 3444 | |
c107acfe MR |
3445 | /* Leave disabled planes at (0,0) */ |
3446 | if (data_rate) { | |
3447 | ddb->plane[pipe][id].start = start; | |
3448 | ddb->plane[pipe][id].end = start + plane_blocks; | |
3449 | } | |
b9cec075 DL |
3450 | |
3451 | start += plane_blocks; | |
2cd601c6 CK |
3452 | |
3453 | /* | |
3454 | * allocation for y_plane part of planar format: | |
3455 | */ | |
a1de91e5 MR |
3456 | y_data_rate = cstate->wm.skl.plane_y_data_rate[id]; |
3457 | ||
3458 | y_plane_blocks = y_minimum[id]; | |
3459 | y_plane_blocks += div_u64((uint64_t)alloc_size * y_data_rate, | |
3460 | total_data_rate); | |
2cd601c6 | 3461 | |
c107acfe MR |
3462 | if (y_data_rate) { |
3463 | ddb->y_plane[pipe][id].start = start; | |
3464 | ddb->y_plane[pipe][id].end = start + y_plane_blocks; | |
3465 | } | |
a1de91e5 MR |
3466 | |
3467 | start += y_plane_blocks; | |
b9cec075 DL |
3468 | } |
3469 | ||
c107acfe | 3470 | return 0; |
b9cec075 DL |
3471 | } |
3472 | ||
5cec258b | 3473 | static uint32_t skl_pipe_pixel_rate(const struct intel_crtc_state *config) |
2d41c0b5 PB |
3474 | { |
3475 | /* TODO: Take into account the scalers once we support them */ | |
2d112de7 | 3476 | return config->base.adjusted_mode.crtc_clock; |
2d41c0b5 PB |
3477 | } |
3478 | ||
3479 | /* | |
3480 | * The max latency should be 257 (max the punit can code is 255 and we add 2us | |
ac484963 | 3481 | * for the read latency) and cpp should always be <= 8, so that |
2d41c0b5 PB |
3482 | * should allow pixel_rate up to ~2 GHz which seems sufficient since max |
3483 | * 2xcdclk is 1350 MHz and the pixel rate should never exceed that. | |
3484 | */ | |
ac484963 | 3485 | static uint32_t skl_wm_method1(uint32_t pixel_rate, uint8_t cpp, uint32_t latency) |
2d41c0b5 PB |
3486 | { |
3487 | uint32_t wm_intermediate_val, ret; | |
3488 | ||
3489 | if (latency == 0) | |
3490 | return UINT_MAX; | |
3491 | ||
ac484963 | 3492 | wm_intermediate_val = latency * pixel_rate * cpp / 512; |
2d41c0b5 PB |
3493 | ret = DIV_ROUND_UP(wm_intermediate_val, 1000); |
3494 | ||
3495 | return ret; | |
3496 | } | |
3497 | ||
3498 | static uint32_t skl_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, | |
7a1a8aed | 3499 | uint32_t latency, uint32_t plane_blocks_per_line) |
2d41c0b5 | 3500 | { |
d4c2aa60 | 3501 | uint32_t ret; |
d4c2aa60 | 3502 | uint32_t wm_intermediate_val; |
2d41c0b5 PB |
3503 | |
3504 | if (latency == 0) | |
3505 | return UINT_MAX; | |
3506 | ||
2d41c0b5 PB |
3507 | wm_intermediate_val = latency * pixel_rate; |
3508 | ret = DIV_ROUND_UP(wm_intermediate_val, pipe_htotal * 1000) * | |
d4c2aa60 | 3509 | plane_blocks_per_line; |
2d41c0b5 PB |
3510 | |
3511 | return ret; | |
3512 | } | |
3513 | ||
9c2f7a9d KM |
3514 | static uint32_t skl_adjusted_plane_pixel_rate(const struct intel_crtc_state *cstate, |
3515 | struct intel_plane_state *pstate) | |
3516 | { | |
3517 | uint64_t adjusted_pixel_rate; | |
3518 | uint64_t downscale_amount; | |
3519 | uint64_t pixel_rate; | |
3520 | ||
3521 | /* Shouldn't reach here on disabled planes... */ | |
936e71e3 | 3522 | if (WARN_ON(!pstate->base.visible)) |
9c2f7a9d KM |
3523 | return 0; |
3524 | ||
3525 | /* | |
3526 | * Adjusted plane pixel rate is just the pipe's adjusted pixel rate | |
3527 | * with additional adjustments for plane-specific scaling. | |
3528 | */ | |
3529 | adjusted_pixel_rate = skl_pipe_pixel_rate(cstate); | |
3530 | downscale_amount = skl_plane_downscale_amount(pstate); | |
3531 | ||
3532 | pixel_rate = adjusted_pixel_rate * downscale_amount >> 16; | |
3533 | WARN_ON(pixel_rate != clamp_t(uint32_t, pixel_rate, 0, ~0)); | |
3534 | ||
3535 | return pixel_rate; | |
3536 | } | |
3537 | ||
55994c2c MR |
3538 | static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv, |
3539 | struct intel_crtc_state *cstate, | |
3540 | struct intel_plane_state *intel_pstate, | |
3541 | uint16_t ddb_allocation, | |
3542 | int level, | |
3543 | uint16_t *out_blocks, /* out */ | |
3544 | uint8_t *out_lines, /* out */ | |
3545 | bool *enabled /* out */) | |
2d41c0b5 | 3546 | { |
33815fa5 MR |
3547 | struct drm_plane_state *pstate = &intel_pstate->base; |
3548 | struct drm_framebuffer *fb = pstate->fb; | |
d4c2aa60 TU |
3549 | uint32_t latency = dev_priv->wm.skl_latency[level]; |
3550 | uint32_t method1, method2; | |
3551 | uint32_t plane_bytes_per_line, plane_blocks_per_line; | |
3552 | uint32_t res_blocks, res_lines; | |
3553 | uint32_t selected_result; | |
ac484963 | 3554 | uint8_t cpp; |
a280f7dd | 3555 | uint32_t width = 0, height = 0; |
9c2f7a9d | 3556 | uint32_t plane_pixel_rate; |
75676ed4 | 3557 | uint32_t y_tile_minimum, y_min_scanlines; |
2d41c0b5 | 3558 | |
936e71e3 | 3559 | if (latency == 0 || !cstate->base.active || !intel_pstate->base.visible) { |
55994c2c MR |
3560 | *enabled = false; |
3561 | return 0; | |
3562 | } | |
2d41c0b5 | 3563 | |
936e71e3 VS |
3564 | width = drm_rect_width(&intel_pstate->base.src) >> 16; |
3565 | height = drm_rect_height(&intel_pstate->base.src) >> 16; | |
a280f7dd | 3566 | |
33815fa5 | 3567 | if (intel_rotation_90_or_270(pstate->rotation)) |
a280f7dd KM |
3568 | swap(width, height); |
3569 | ||
ac484963 | 3570 | cpp = drm_format_plane_cpp(fb->pixel_format, 0); |
9c2f7a9d KM |
3571 | plane_pixel_rate = skl_adjusted_plane_pixel_rate(cstate, intel_pstate); |
3572 | ||
1186fa85 PZ |
3573 | if (intel_rotation_90_or_270(pstate->rotation)) { |
3574 | int cpp = (fb->pixel_format == DRM_FORMAT_NV12) ? | |
3575 | drm_format_plane_cpp(fb->pixel_format, 1) : | |
3576 | drm_format_plane_cpp(fb->pixel_format, 0); | |
3577 | ||
3578 | switch (cpp) { | |
3579 | case 1: | |
3580 | y_min_scanlines = 16; | |
3581 | break; | |
3582 | case 2: | |
3583 | y_min_scanlines = 8; | |
3584 | break; | |
1186fa85 PZ |
3585 | case 4: |
3586 | y_min_scanlines = 4; | |
3587 | break; | |
86a462bc PZ |
3588 | default: |
3589 | MISSING_CASE(cpp); | |
3590 | return -EINVAL; | |
1186fa85 PZ |
3591 | } |
3592 | } else { | |
3593 | y_min_scanlines = 4; | |
3594 | } | |
3595 | ||
7a1a8aed PZ |
3596 | plane_bytes_per_line = width * cpp; |
3597 | if (fb->modifier[0] == I915_FORMAT_MOD_Y_TILED || | |
3598 | fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED) { | |
3599 | plane_blocks_per_line = | |
3600 | DIV_ROUND_UP(plane_bytes_per_line * y_min_scanlines, 512); | |
3601 | plane_blocks_per_line /= y_min_scanlines; | |
3602 | } else if (fb->modifier[0] == DRM_FORMAT_MOD_NONE) { | |
3603 | plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512) | |
3604 | + 1; | |
3605 | } else { | |
3606 | plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); | |
3607 | } | |
3608 | ||
9c2f7a9d KM |
3609 | method1 = skl_wm_method1(plane_pixel_rate, cpp, latency); |
3610 | method2 = skl_wm_method2(plane_pixel_rate, | |
024c9045 | 3611 | cstate->base.adjusted_mode.crtc_htotal, |
1186fa85 | 3612 | latency, |
7a1a8aed | 3613 | plane_blocks_per_line); |
2d41c0b5 | 3614 | |
75676ed4 PZ |
3615 | y_tile_minimum = plane_blocks_per_line * y_min_scanlines; |
3616 | ||
024c9045 MR |
3617 | if (fb->modifier[0] == I915_FORMAT_MOD_Y_TILED || |
3618 | fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED) { | |
0fda6568 TU |
3619 | selected_result = max(method2, y_tile_minimum); |
3620 | } else { | |
f1db3eaf PZ |
3621 | if ((cpp * cstate->base.adjusted_mode.crtc_htotal / 512 < 1) && |
3622 | (plane_bytes_per_line / 512 < 1)) | |
3623 | selected_result = method2; | |
3624 | else if ((ddb_allocation / plane_blocks_per_line) >= 1) | |
0fda6568 TU |
3625 | selected_result = min(method1, method2); |
3626 | else | |
3627 | selected_result = method1; | |
3628 | } | |
2d41c0b5 | 3629 | |
d4c2aa60 TU |
3630 | res_blocks = selected_result + 1; |
3631 | res_lines = DIV_ROUND_UP(selected_result, plane_blocks_per_line); | |
e6d66171 | 3632 | |
0fda6568 | 3633 | if (level >= 1 && level <= 7) { |
024c9045 | 3634 | if (fb->modifier[0] == I915_FORMAT_MOD_Y_TILED || |
75676ed4 PZ |
3635 | fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED) { |
3636 | res_blocks += y_tile_minimum; | |
1186fa85 | 3637 | res_lines += y_min_scanlines; |
75676ed4 | 3638 | } else { |
0fda6568 | 3639 | res_blocks++; |
75676ed4 | 3640 | } |
0fda6568 | 3641 | } |
e6d66171 | 3642 | |
55994c2c MR |
3643 | if (res_blocks >= ddb_allocation || res_lines > 31) { |
3644 | *enabled = false; | |
6b6bada7 MR |
3645 | |
3646 | /* | |
3647 | * If there are no valid level 0 watermarks, then we can't | |
3648 | * support this display configuration. | |
3649 | */ | |
3650 | if (level) { | |
3651 | return 0; | |
3652 | } else { | |
3653 | DRM_DEBUG_KMS("Requested display configuration exceeds system watermark limitations\n"); | |
3654 | DRM_DEBUG_KMS("Plane %d.%d: blocks required = %u/%u, lines required = %u/31\n", | |
3655 | to_intel_crtc(cstate->base.crtc)->pipe, | |
3656 | skl_wm_plane_id(to_intel_plane(pstate->plane)), | |
3657 | res_blocks, ddb_allocation, res_lines); | |
3658 | ||
3659 | return -EINVAL; | |
3660 | } | |
55994c2c | 3661 | } |
e6d66171 DL |
3662 | |
3663 | *out_blocks = res_blocks; | |
3664 | *out_lines = res_lines; | |
55994c2c | 3665 | *enabled = true; |
2d41c0b5 | 3666 | |
55994c2c | 3667 | return 0; |
2d41c0b5 PB |
3668 | } |
3669 | ||
f4a96752 MR |
3670 | static int |
3671 | skl_compute_wm_level(const struct drm_i915_private *dev_priv, | |
3672 | struct skl_ddb_allocation *ddb, | |
3673 | struct intel_crtc_state *cstate, | |
3674 | int level, | |
3675 | struct skl_wm_level *result) | |
2d41c0b5 | 3676 | { |
f4a96752 | 3677 | struct drm_atomic_state *state = cstate->base.state; |
024c9045 | 3678 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); |
f4a96752 | 3679 | struct drm_plane *plane; |
024c9045 | 3680 | struct intel_plane *intel_plane; |
33815fa5 | 3681 | struct intel_plane_state *intel_pstate; |
2d41c0b5 | 3682 | uint16_t ddb_blocks; |
024c9045 | 3683 | enum pipe pipe = intel_crtc->pipe; |
55994c2c | 3684 | int ret; |
024c9045 | 3685 | |
f4a96752 MR |
3686 | /* |
3687 | * We'll only calculate watermarks for planes that are actually | |
3688 | * enabled, so make sure all other planes are set as disabled. | |
3689 | */ | |
3690 | memset(result, 0, sizeof(*result)); | |
3691 | ||
91c8a326 CW |
3692 | for_each_intel_plane_mask(&dev_priv->drm, |
3693 | intel_plane, | |
3694 | cstate->base.plane_mask) { | |
024c9045 | 3695 | int i = skl_wm_plane_id(intel_plane); |
2d41c0b5 | 3696 | |
f4a96752 MR |
3697 | plane = &intel_plane->base; |
3698 | intel_pstate = NULL; | |
3699 | if (state) | |
3700 | intel_pstate = | |
3701 | intel_atomic_get_existing_plane_state(state, | |
3702 | intel_plane); | |
3703 | ||
3704 | /* | |
3705 | * Note: If we start supporting multiple pending atomic commits | |
3706 | * against the same planes/CRTC's in the future, plane->state | |
3707 | * will no longer be the correct pre-state to use for the | |
3708 | * calculations here and we'll need to change where we get the | |
3709 | * 'unchanged' plane data from. | |
3710 | * | |
3711 | * For now this is fine because we only allow one queued commit | |
3712 | * against a CRTC. Even if the plane isn't modified by this | |
3713 | * transaction and we don't have a plane lock, we still have | |
3714 | * the CRTC's lock, so we know that no other transactions are | |
3715 | * racing with us to update it. | |
3716 | */ | |
3717 | if (!intel_pstate) | |
3718 | intel_pstate = to_intel_plane_state(plane->state); | |
3719 | ||
3720 | WARN_ON(!intel_pstate->base.fb); | |
3721 | ||
2d41c0b5 PB |
3722 | ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][i]); |
3723 | ||
55994c2c MR |
3724 | ret = skl_compute_plane_wm(dev_priv, |
3725 | cstate, | |
3726 | intel_pstate, | |
3727 | ddb_blocks, | |
3728 | level, | |
3729 | &result->plane_res_b[i], | |
3730 | &result->plane_res_l[i], | |
3731 | &result->plane_en[i]); | |
3732 | if (ret) | |
3733 | return ret; | |
2d41c0b5 | 3734 | } |
f4a96752 MR |
3735 | |
3736 | return 0; | |
2d41c0b5 PB |
3737 | } |
3738 | ||
407b50f3 | 3739 | static uint32_t |
024c9045 | 3740 | skl_compute_linetime_wm(struct intel_crtc_state *cstate) |
407b50f3 | 3741 | { |
024c9045 | 3742 | if (!cstate->base.active) |
407b50f3 DL |
3743 | return 0; |
3744 | ||
024c9045 | 3745 | if (WARN_ON(skl_pipe_pixel_rate(cstate) == 0)) |
661abfc0 | 3746 | return 0; |
407b50f3 | 3747 | |
024c9045 MR |
3748 | return DIV_ROUND_UP(8 * cstate->base.adjusted_mode.crtc_htotal * 1000, |
3749 | skl_pipe_pixel_rate(cstate)); | |
407b50f3 DL |
3750 | } |
3751 | ||
024c9045 | 3752 | static void skl_compute_transition_wm(struct intel_crtc_state *cstate, |
9414f563 | 3753 | struct skl_wm_level *trans_wm /* out */) |
407b50f3 | 3754 | { |
024c9045 | 3755 | struct drm_crtc *crtc = cstate->base.crtc; |
9414f563 | 3756 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
024c9045 | 3757 | struct intel_plane *intel_plane; |
9414f563 | 3758 | |
024c9045 | 3759 | if (!cstate->base.active) |
407b50f3 | 3760 | return; |
9414f563 DL |
3761 | |
3762 | /* Until we know more, just disable transition WMs */ | |
024c9045 MR |
3763 | for_each_intel_plane_on_crtc(crtc->dev, intel_crtc, intel_plane) { |
3764 | int i = skl_wm_plane_id(intel_plane); | |
3765 | ||
9414f563 | 3766 | trans_wm->plane_en[i] = false; |
024c9045 | 3767 | } |
407b50f3 DL |
3768 | } |
3769 | ||
55994c2c MR |
3770 | static int skl_build_pipe_wm(struct intel_crtc_state *cstate, |
3771 | struct skl_ddb_allocation *ddb, | |
3772 | struct skl_pipe_wm *pipe_wm) | |
2d41c0b5 | 3773 | { |
024c9045 | 3774 | struct drm_device *dev = cstate->base.crtc->dev; |
fac5e23e | 3775 | const struct drm_i915_private *dev_priv = to_i915(dev); |
2d41c0b5 | 3776 | int level, max_level = ilk_wm_max_level(dev); |
55994c2c | 3777 | int ret; |
2d41c0b5 PB |
3778 | |
3779 | for (level = 0; level <= max_level; level++) { | |
55994c2c MR |
3780 | ret = skl_compute_wm_level(dev_priv, ddb, cstate, |
3781 | level, &pipe_wm->wm[level]); | |
3782 | if (ret) | |
3783 | return ret; | |
2d41c0b5 | 3784 | } |
024c9045 | 3785 | pipe_wm->linetime = skl_compute_linetime_wm(cstate); |
2d41c0b5 | 3786 | |
024c9045 | 3787 | skl_compute_transition_wm(cstate, &pipe_wm->trans_wm); |
55994c2c MR |
3788 | |
3789 | return 0; | |
2d41c0b5 PB |
3790 | } |
3791 | ||
3792 | static void skl_compute_wm_results(struct drm_device *dev, | |
2d41c0b5 PB |
3793 | struct skl_pipe_wm *p_wm, |
3794 | struct skl_wm_values *r, | |
3795 | struct intel_crtc *intel_crtc) | |
3796 | { | |
3797 | int level, max_level = ilk_wm_max_level(dev); | |
3798 | enum pipe pipe = intel_crtc->pipe; | |
9414f563 DL |
3799 | uint32_t temp; |
3800 | int i; | |
2d41c0b5 PB |
3801 | |
3802 | for (level = 0; level <= max_level; level++) { | |
2d41c0b5 PB |
3803 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { |
3804 | temp = 0; | |
2d41c0b5 PB |
3805 | |
3806 | temp |= p_wm->wm[level].plane_res_l[i] << | |
3807 | PLANE_WM_LINES_SHIFT; | |
3808 | temp |= p_wm->wm[level].plane_res_b[i]; | |
3809 | if (p_wm->wm[level].plane_en[i]) | |
3810 | temp |= PLANE_WM_EN; | |
3811 | ||
3812 | r->plane[pipe][i][level] = temp; | |
2d41c0b5 PB |
3813 | } |
3814 | ||
3815 | temp = 0; | |
2d41c0b5 | 3816 | |
4969d33e MR |
3817 | temp |= p_wm->wm[level].plane_res_l[PLANE_CURSOR] << PLANE_WM_LINES_SHIFT; |
3818 | temp |= p_wm->wm[level].plane_res_b[PLANE_CURSOR]; | |
2d41c0b5 | 3819 | |
4969d33e | 3820 | if (p_wm->wm[level].plane_en[PLANE_CURSOR]) |
2d41c0b5 PB |
3821 | temp |= PLANE_WM_EN; |
3822 | ||
4969d33e | 3823 | r->plane[pipe][PLANE_CURSOR][level] = temp; |
2d41c0b5 PB |
3824 | |
3825 | } | |
3826 | ||
9414f563 DL |
3827 | /* transition WMs */ |
3828 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
3829 | temp = 0; | |
3830 | temp |= p_wm->trans_wm.plane_res_l[i] << PLANE_WM_LINES_SHIFT; | |
3831 | temp |= p_wm->trans_wm.plane_res_b[i]; | |
3832 | if (p_wm->trans_wm.plane_en[i]) | |
3833 | temp |= PLANE_WM_EN; | |
3834 | ||
3835 | r->plane_trans[pipe][i] = temp; | |
3836 | } | |
3837 | ||
3838 | temp = 0; | |
4969d33e MR |
3839 | temp |= p_wm->trans_wm.plane_res_l[PLANE_CURSOR] << PLANE_WM_LINES_SHIFT; |
3840 | temp |= p_wm->trans_wm.plane_res_b[PLANE_CURSOR]; | |
3841 | if (p_wm->trans_wm.plane_en[PLANE_CURSOR]) | |
9414f563 DL |
3842 | temp |= PLANE_WM_EN; |
3843 | ||
4969d33e | 3844 | r->plane_trans[pipe][PLANE_CURSOR] = temp; |
9414f563 | 3845 | |
2d41c0b5 PB |
3846 | r->wm_linetime[pipe] = p_wm->linetime; |
3847 | } | |
3848 | ||
f0f59a00 VS |
3849 | static void skl_ddb_entry_write(struct drm_i915_private *dev_priv, |
3850 | i915_reg_t reg, | |
16160e3d DL |
3851 | const struct skl_ddb_entry *entry) |
3852 | { | |
3853 | if (entry->end) | |
3854 | I915_WRITE(reg, (entry->end - 1) << 16 | entry->start); | |
3855 | else | |
3856 | I915_WRITE(reg, 0); | |
3857 | } | |
3858 | ||
62e0fb88 L |
3859 | void skl_write_plane_wm(struct intel_crtc *intel_crtc, |
3860 | const struct skl_wm_values *wm, | |
3861 | int plane) | |
3862 | { | |
3863 | struct drm_crtc *crtc = &intel_crtc->base; | |
3864 | struct drm_device *dev = crtc->dev; | |
3865 | struct drm_i915_private *dev_priv = to_i915(dev); | |
3866 | int level, max_level = ilk_wm_max_level(dev); | |
3867 | enum pipe pipe = intel_crtc->pipe; | |
3868 | ||
3869 | for (level = 0; level <= max_level; level++) { | |
3870 | I915_WRITE(PLANE_WM(pipe, plane, level), | |
3871 | wm->plane[pipe][plane][level]); | |
3872 | } | |
3873 | I915_WRITE(PLANE_WM_TRANS(pipe, plane), wm->plane_trans[pipe][plane]); | |
27082493 L |
3874 | |
3875 | skl_ddb_entry_write(dev_priv, PLANE_BUF_CFG(pipe, plane), | |
3876 | &wm->ddb.plane[pipe][plane]); | |
3877 | skl_ddb_entry_write(dev_priv, PLANE_NV12_BUF_CFG(pipe, plane), | |
3878 | &wm->ddb.y_plane[pipe][plane]); | |
62e0fb88 L |
3879 | } |
3880 | ||
3881 | void skl_write_cursor_wm(struct intel_crtc *intel_crtc, | |
3882 | const struct skl_wm_values *wm) | |
3883 | { | |
3884 | struct drm_crtc *crtc = &intel_crtc->base; | |
3885 | struct drm_device *dev = crtc->dev; | |
3886 | struct drm_i915_private *dev_priv = to_i915(dev); | |
3887 | int level, max_level = ilk_wm_max_level(dev); | |
3888 | enum pipe pipe = intel_crtc->pipe; | |
3889 | ||
3890 | for (level = 0; level <= max_level; level++) { | |
3891 | I915_WRITE(CUR_WM(pipe, level), | |
3892 | wm->plane[pipe][PLANE_CURSOR][level]); | |
3893 | } | |
3894 | I915_WRITE(CUR_WM_TRANS(pipe), wm->plane_trans[pipe][PLANE_CURSOR]); | |
5d374d96 | 3895 | |
27082493 L |
3896 | skl_ddb_entry_write(dev_priv, CUR_BUF_CFG(pipe), |
3897 | &wm->ddb.plane[pipe][PLANE_CURSOR]); | |
2d41c0b5 PB |
3898 | } |
3899 | ||
27082493 L |
3900 | bool skl_ddb_allocation_equals(const struct skl_ddb_allocation *old, |
3901 | const struct skl_ddb_allocation *new, | |
3902 | enum pipe pipe) | |
0e8fb7ba | 3903 | { |
27082493 L |
3904 | return new->pipe[pipe].start == old->pipe[pipe].start && |
3905 | new->pipe[pipe].end == old->pipe[pipe].end; | |
0e8fb7ba DL |
3906 | } |
3907 | ||
27082493 L |
3908 | static inline bool skl_ddb_entries_overlap(const struct skl_ddb_entry *a, |
3909 | const struct skl_ddb_entry *b) | |
0e8fb7ba | 3910 | { |
27082493 | 3911 | return a->start < b->end && b->start < a->end; |
0e8fb7ba DL |
3912 | } |
3913 | ||
27082493 L |
3914 | bool skl_ddb_allocation_overlaps(struct drm_atomic_state *state, |
3915 | const struct skl_ddb_allocation *old, | |
3916 | const struct skl_ddb_allocation *new, | |
3917 | enum pipe pipe) | |
0e8fb7ba | 3918 | { |
27082493 L |
3919 | struct drm_device *dev = state->dev; |
3920 | struct intel_crtc *intel_crtc; | |
3921 | enum pipe otherp; | |
0e8fb7ba | 3922 | |
27082493 L |
3923 | for_each_intel_crtc(dev, intel_crtc) { |
3924 | otherp = intel_crtc->pipe; | |
0e8fb7ba | 3925 | |
27082493 | 3926 | if (otherp == pipe) |
0e8fb7ba DL |
3927 | continue; |
3928 | ||
27082493 L |
3929 | if (skl_ddb_entries_overlap(&new->pipe[pipe], |
3930 | &old->pipe[otherp])) | |
3931 | return true; | |
0e8fb7ba DL |
3932 | } |
3933 | ||
27082493 | 3934 | return false; |
0e8fb7ba DL |
3935 | } |
3936 | ||
55994c2c MR |
3937 | static int skl_update_pipe_wm(struct drm_crtc_state *cstate, |
3938 | struct skl_ddb_allocation *ddb, /* out */ | |
3939 | struct skl_pipe_wm *pipe_wm, /* out */ | |
3940 | bool *changed /* out */) | |
2d41c0b5 | 3941 | { |
f4a96752 MR |
3942 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->crtc); |
3943 | struct intel_crtc_state *intel_cstate = to_intel_crtc_state(cstate); | |
55994c2c | 3944 | int ret; |
2d41c0b5 | 3945 | |
55994c2c MR |
3946 | ret = skl_build_pipe_wm(intel_cstate, ddb, pipe_wm); |
3947 | if (ret) | |
3948 | return ret; | |
2d41c0b5 | 3949 | |
4e0963c7 | 3950 | if (!memcmp(&intel_crtc->wm.active.skl, pipe_wm, sizeof(*pipe_wm))) |
55994c2c MR |
3951 | *changed = false; |
3952 | else | |
3953 | *changed = true; | |
2d41c0b5 | 3954 | |
55994c2c | 3955 | return 0; |
2d41c0b5 PB |
3956 | } |
3957 | ||
9b613022 MR |
3958 | static uint32_t |
3959 | pipes_modified(struct drm_atomic_state *state) | |
3960 | { | |
3961 | struct drm_crtc *crtc; | |
3962 | struct drm_crtc_state *cstate; | |
3963 | uint32_t i, ret = 0; | |
3964 | ||
3965 | for_each_crtc_in_state(state, crtc, cstate, i) | |
3966 | ret |= drm_crtc_mask(crtc); | |
3967 | ||
3968 | return ret; | |
3969 | } | |
3970 | ||
bb7791bd | 3971 | static int |
7f60e200 PZ |
3972 | skl_ddb_add_affected_planes(struct intel_crtc_state *cstate) |
3973 | { | |
3974 | struct drm_atomic_state *state = cstate->base.state; | |
3975 | struct drm_device *dev = state->dev; | |
3976 | struct drm_crtc *crtc = cstate->base.crtc; | |
3977 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3978 | struct drm_i915_private *dev_priv = to_i915(dev); | |
3979 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
3980 | struct skl_ddb_allocation *new_ddb = &intel_state->wm_results.ddb; | |
3981 | struct skl_ddb_allocation *cur_ddb = &dev_priv->wm.skl_hw.ddb; | |
3982 | struct drm_plane_state *plane_state; | |
3983 | struct drm_plane *plane; | |
3984 | enum pipe pipe = intel_crtc->pipe; | |
3985 | int id; | |
3986 | ||
3987 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); | |
3988 | ||
3989 | drm_for_each_plane_mask(plane, dev, crtc->state->plane_mask) { | |
3990 | id = skl_wm_plane_id(to_intel_plane(plane)); | |
3991 | ||
3992 | if (skl_ddb_entry_equal(&cur_ddb->plane[pipe][id], | |
3993 | &new_ddb->plane[pipe][id]) && | |
3994 | skl_ddb_entry_equal(&cur_ddb->y_plane[pipe][id], | |
3995 | &new_ddb->y_plane[pipe][id])) | |
3996 | continue; | |
3997 | ||
3998 | plane_state = drm_atomic_get_plane_state(state, plane); | |
3999 | if (IS_ERR(plane_state)) | |
4000 | return PTR_ERR(plane_state); | |
4001 | } | |
4002 | ||
4003 | return 0; | |
4004 | } | |
4005 | ||
98d39494 MR |
4006 | static int |
4007 | skl_compute_ddb(struct drm_atomic_state *state) | |
4008 | { | |
4009 | struct drm_device *dev = state->dev; | |
4010 | struct drm_i915_private *dev_priv = to_i915(dev); | |
4011 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); | |
4012 | struct intel_crtc *intel_crtc; | |
734fa01f | 4013 | struct skl_ddb_allocation *ddb = &intel_state->wm_results.ddb; |
9b613022 | 4014 | uint32_t realloc_pipes = pipes_modified(state); |
98d39494 MR |
4015 | int ret; |
4016 | ||
4017 | /* | |
4018 | * If this is our first atomic update following hardware readout, | |
4019 | * we can't trust the DDB that the BIOS programmed for us. Let's | |
4020 | * pretend that all pipes switched active status so that we'll | |
4021 | * ensure a full DDB recompute. | |
4022 | */ | |
1b54a880 MR |
4023 | if (dev_priv->wm.distrust_bios_wm) { |
4024 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
4025 | state->acquire_ctx); | |
4026 | if (ret) | |
4027 | return ret; | |
4028 | ||
98d39494 MR |
4029 | intel_state->active_pipe_changes = ~0; |
4030 | ||
1b54a880 MR |
4031 | /* |
4032 | * We usually only initialize intel_state->active_crtcs if we | |
4033 | * we're doing a modeset; make sure this field is always | |
4034 | * initialized during the sanitization process that happens | |
4035 | * on the first commit too. | |
4036 | */ | |
4037 | if (!intel_state->modeset) | |
4038 | intel_state->active_crtcs = dev_priv->active_crtcs; | |
4039 | } | |
4040 | ||
98d39494 MR |
4041 | /* |
4042 | * If the modeset changes which CRTC's are active, we need to | |
4043 | * recompute the DDB allocation for *all* active pipes, even | |
4044 | * those that weren't otherwise being modified in any way by this | |
4045 | * atomic commit. Due to the shrinking of the per-pipe allocations | |
4046 | * when new active CRTC's are added, it's possible for a pipe that | |
4047 | * we were already using and aren't changing at all here to suddenly | |
4048 | * become invalid if its DDB needs exceeds its new allocation. | |
4049 | * | |
4050 | * Note that if we wind up doing a full DDB recompute, we can't let | |
4051 | * any other display updates race with this transaction, so we need | |
4052 | * to grab the lock on *all* CRTC's. | |
4053 | */ | |
734fa01f | 4054 | if (intel_state->active_pipe_changes) { |
98d39494 | 4055 | realloc_pipes = ~0; |
734fa01f MR |
4056 | intel_state->wm_results.dirty_pipes = ~0; |
4057 | } | |
98d39494 | 4058 | |
5a920b85 PZ |
4059 | /* |
4060 | * We're not recomputing for the pipes not included in the commit, so | |
4061 | * make sure we start with the current state. | |
4062 | */ | |
4063 | memcpy(ddb, &dev_priv->wm.skl_hw.ddb, sizeof(*ddb)); | |
4064 | ||
98d39494 MR |
4065 | for_each_intel_crtc_mask(dev, intel_crtc, realloc_pipes) { |
4066 | struct intel_crtc_state *cstate; | |
4067 | ||
4068 | cstate = intel_atomic_get_crtc_state(state, intel_crtc); | |
4069 | if (IS_ERR(cstate)) | |
4070 | return PTR_ERR(cstate); | |
4071 | ||
734fa01f | 4072 | ret = skl_allocate_pipe_ddb(cstate, ddb); |
98d39494 MR |
4073 | if (ret) |
4074 | return ret; | |
05a76d3d | 4075 | |
7f60e200 | 4076 | ret = skl_ddb_add_affected_planes(cstate); |
05a76d3d L |
4077 | if (ret) |
4078 | return ret; | |
98d39494 MR |
4079 | } |
4080 | ||
4081 | return 0; | |
4082 | } | |
4083 | ||
2722efb9 MR |
4084 | static void |
4085 | skl_copy_wm_for_pipe(struct skl_wm_values *dst, | |
4086 | struct skl_wm_values *src, | |
4087 | enum pipe pipe) | |
4088 | { | |
4089 | dst->wm_linetime[pipe] = src->wm_linetime[pipe]; | |
4090 | memcpy(dst->plane[pipe], src->plane[pipe], | |
4091 | sizeof(dst->plane[pipe])); | |
4092 | memcpy(dst->plane_trans[pipe], src->plane_trans[pipe], | |
4093 | sizeof(dst->plane_trans[pipe])); | |
4094 | ||
4095 | dst->ddb.pipe[pipe] = src->ddb.pipe[pipe]; | |
4096 | memcpy(dst->ddb.y_plane[pipe], src->ddb.y_plane[pipe], | |
4097 | sizeof(dst->ddb.y_plane[pipe])); | |
4098 | memcpy(dst->ddb.plane[pipe], src->ddb.plane[pipe], | |
4099 | sizeof(dst->ddb.plane[pipe])); | |
4100 | } | |
4101 | ||
98d39494 MR |
4102 | static int |
4103 | skl_compute_wm(struct drm_atomic_state *state) | |
4104 | { | |
4105 | struct drm_crtc *crtc; | |
4106 | struct drm_crtc_state *cstate; | |
734fa01f MR |
4107 | struct intel_atomic_state *intel_state = to_intel_atomic_state(state); |
4108 | struct skl_wm_values *results = &intel_state->wm_results; | |
4109 | struct skl_pipe_wm *pipe_wm; | |
98d39494 | 4110 | bool changed = false; |
734fa01f | 4111 | int ret, i; |
98d39494 MR |
4112 | |
4113 | /* | |
4114 | * If this transaction isn't actually touching any CRTC's, don't | |
4115 | * bother with watermark calculation. Note that if we pass this | |
4116 | * test, we're guaranteed to hold at least one CRTC state mutex, | |
4117 | * which means we can safely use values like dev_priv->active_crtcs | |
4118 | * since any racing commits that want to update them would need to | |
4119 | * hold _all_ CRTC state mutexes. | |
4120 | */ | |
4121 | for_each_crtc_in_state(state, crtc, cstate, i) | |
4122 | changed = true; | |
4123 | if (!changed) | |
4124 | return 0; | |
4125 | ||
734fa01f MR |
4126 | /* Clear all dirty flags */ |
4127 | results->dirty_pipes = 0; | |
4128 | ||
98d39494 MR |
4129 | ret = skl_compute_ddb(state); |
4130 | if (ret) | |
4131 | return ret; | |
4132 | ||
734fa01f MR |
4133 | /* |
4134 | * Calculate WM's for all pipes that are part of this transaction. | |
4135 | * Note that the DDB allocation above may have added more CRTC's that | |
4136 | * weren't otherwise being modified (and set bits in dirty_pipes) if | |
4137 | * pipe allocations had to change. | |
4138 | * | |
4139 | * FIXME: Now that we're doing this in the atomic check phase, we | |
4140 | * should allow skl_update_pipe_wm() to return failure in cases where | |
4141 | * no suitable watermark values can be found. | |
4142 | */ | |
4143 | for_each_crtc_in_state(state, crtc, cstate, i) { | |
4144 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4145 | struct intel_crtc_state *intel_cstate = | |
4146 | to_intel_crtc_state(cstate); | |
4147 | ||
4148 | pipe_wm = &intel_cstate->wm.skl.optimal; | |
4149 | ret = skl_update_pipe_wm(cstate, &results->ddb, pipe_wm, | |
4150 | &changed); | |
4151 | if (ret) | |
4152 | return ret; | |
4153 | ||
4154 | if (changed) | |
4155 | results->dirty_pipes |= drm_crtc_mask(crtc); | |
4156 | ||
4157 | if ((results->dirty_pipes & drm_crtc_mask(crtc)) == 0) | |
4158 | /* This pipe's WM's did not change */ | |
4159 | continue; | |
4160 | ||
4161 | intel_cstate->update_wm_pre = true; | |
4162 | skl_compute_wm_results(crtc->dev, pipe_wm, results, intel_crtc); | |
4163 | } | |
4164 | ||
98d39494 MR |
4165 | return 0; |
4166 | } | |
4167 | ||
2d41c0b5 PB |
4168 | static void skl_update_wm(struct drm_crtc *crtc) |
4169 | { | |
4170 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4171 | struct drm_device *dev = crtc->dev; | |
fac5e23e | 4172 | struct drm_i915_private *dev_priv = to_i915(dev); |
2d41c0b5 | 4173 | struct skl_wm_values *results = &dev_priv->wm.skl_results; |
2722efb9 | 4174 | struct skl_wm_values *hw_vals = &dev_priv->wm.skl_hw; |
4e0963c7 | 4175 | struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state); |
e8f1f02e | 4176 | struct skl_pipe_wm *pipe_wm = &cstate->wm.skl.optimal; |
27082493 | 4177 | enum pipe pipe = intel_crtc->pipe; |
adda50b8 | 4178 | |
734fa01f | 4179 | if ((results->dirty_pipes & drm_crtc_mask(crtc)) == 0) |
2d41c0b5 PB |
4180 | return; |
4181 | ||
734fa01f MR |
4182 | intel_crtc->wm.active.skl = *pipe_wm; |
4183 | ||
4184 | mutex_lock(&dev_priv->wm.wm_mutex); | |
2d41c0b5 | 4185 | |
2722efb9 | 4186 | /* |
27082493 L |
4187 | * If this pipe isn't active already, we're going to be enabling it |
4188 | * very soon. Since it's safe to update a pipe's ddb allocation while | |
4189 | * the pipe's shut off, just do so here. Already active pipes will have | |
4190 | * their watermarks updated once we update their planes. | |
2722efb9 | 4191 | */ |
27082493 L |
4192 | if (crtc->state->active_changed) { |
4193 | int plane; | |
4194 | ||
4195 | for (plane = 0; plane < intel_num_planes(intel_crtc); plane++) | |
4196 | skl_write_plane_wm(intel_crtc, results, plane); | |
4197 | ||
4198 | skl_write_cursor_wm(intel_crtc, results); | |
4199 | } | |
4200 | ||
4201 | skl_copy_wm_for_pipe(hw_vals, results, pipe); | |
734fa01f MR |
4202 | |
4203 | mutex_unlock(&dev_priv->wm.wm_mutex); | |
2d41c0b5 PB |
4204 | } |
4205 | ||
d890565c VS |
4206 | static void ilk_compute_wm_config(struct drm_device *dev, |
4207 | struct intel_wm_config *config) | |
4208 | { | |
4209 | struct intel_crtc *crtc; | |
4210 | ||
4211 | /* Compute the currently _active_ config */ | |
4212 | for_each_intel_crtc(dev, crtc) { | |
4213 | const struct intel_pipe_wm *wm = &crtc->wm.active.ilk; | |
4214 | ||
4215 | if (!wm->pipe_enabled) | |
4216 | continue; | |
4217 | ||
4218 | config->sprites_enabled |= wm->sprites_enabled; | |
4219 | config->sprites_scaled |= wm->sprites_scaled; | |
4220 | config->num_pipes_active++; | |
4221 | } | |
4222 | } | |
4223 | ||
ed4a6a7c | 4224 | static void ilk_program_watermarks(struct drm_i915_private *dev_priv) |
801bcfff | 4225 | { |
91c8a326 | 4226 | struct drm_device *dev = &dev_priv->drm; |
b9d5c839 | 4227 | struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm; |
820c1980 | 4228 | struct ilk_wm_maximums max; |
d890565c | 4229 | struct intel_wm_config config = {}; |
820c1980 | 4230 | struct ilk_wm_values results = {}; |
77c122bc | 4231 | enum intel_ddb_partitioning partitioning; |
261a27d1 | 4232 | |
d890565c VS |
4233 | ilk_compute_wm_config(dev, &config); |
4234 | ||
4235 | ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_1_2, &max); | |
4236 | ilk_wm_merge(dev, &config, &max, &lp_wm_1_2); | |
a485bfb8 VS |
4237 | |
4238 | /* 5/6 split only in single pipe config on IVB+ */ | |
ec98c8d1 | 4239 | if (INTEL_INFO(dev)->gen >= 7 && |
d890565c VS |
4240 | config.num_pipes_active == 1 && config.sprites_enabled) { |
4241 | ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_5_6, &max); | |
4242 | ilk_wm_merge(dev, &config, &max, &lp_wm_5_6); | |
0362c781 | 4243 | |
820c1980 | 4244 | best_lp_wm = ilk_find_best_result(dev, &lp_wm_1_2, &lp_wm_5_6); |
861f3389 | 4245 | } else { |
198a1e9b | 4246 | best_lp_wm = &lp_wm_1_2; |
861f3389 PZ |
4247 | } |
4248 | ||
198a1e9b | 4249 | partitioning = (best_lp_wm == &lp_wm_1_2) ? |
77c122bc | 4250 | INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6; |
801bcfff | 4251 | |
820c1980 | 4252 | ilk_compute_wm_results(dev, best_lp_wm, partitioning, &results); |
609cedef | 4253 | |
820c1980 | 4254 | ilk_write_wm_values(dev_priv, &results); |
1011d8c4 PZ |
4255 | } |
4256 | ||
ed4a6a7c | 4257 | static void ilk_initial_watermarks(struct intel_crtc_state *cstate) |
b9d5c839 | 4258 | { |
ed4a6a7c MR |
4259 | struct drm_i915_private *dev_priv = to_i915(cstate->base.crtc->dev); |
4260 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); | |
b9d5c839 | 4261 | |
ed4a6a7c | 4262 | mutex_lock(&dev_priv->wm.wm_mutex); |
e8f1f02e | 4263 | intel_crtc->wm.active.ilk = cstate->wm.ilk.intermediate; |
ed4a6a7c MR |
4264 | ilk_program_watermarks(dev_priv); |
4265 | mutex_unlock(&dev_priv->wm.wm_mutex); | |
4266 | } | |
bf220452 | 4267 | |
ed4a6a7c MR |
4268 | static void ilk_optimize_watermarks(struct intel_crtc_state *cstate) |
4269 | { | |
4270 | struct drm_i915_private *dev_priv = to_i915(cstate->base.crtc->dev); | |
4271 | struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc); | |
bf220452 | 4272 | |
ed4a6a7c MR |
4273 | mutex_lock(&dev_priv->wm.wm_mutex); |
4274 | if (cstate->wm.need_postvbl_update) { | |
e8f1f02e | 4275 | intel_crtc->wm.active.ilk = cstate->wm.ilk.optimal; |
ed4a6a7c MR |
4276 | ilk_program_watermarks(dev_priv); |
4277 | } | |
4278 | mutex_unlock(&dev_priv->wm.wm_mutex); | |
b9d5c839 VS |
4279 | } |
4280 | ||
3078999f PB |
4281 | static void skl_pipe_wm_active_state(uint32_t val, |
4282 | struct skl_pipe_wm *active, | |
4283 | bool is_transwm, | |
4284 | bool is_cursor, | |
4285 | int i, | |
4286 | int level) | |
4287 | { | |
4288 | bool is_enabled = (val & PLANE_WM_EN) != 0; | |
4289 | ||
4290 | if (!is_transwm) { | |
4291 | if (!is_cursor) { | |
4292 | active->wm[level].plane_en[i] = is_enabled; | |
4293 | active->wm[level].plane_res_b[i] = | |
4294 | val & PLANE_WM_BLOCKS_MASK; | |
4295 | active->wm[level].plane_res_l[i] = | |
4296 | (val >> PLANE_WM_LINES_SHIFT) & | |
4297 | PLANE_WM_LINES_MASK; | |
4298 | } else { | |
4969d33e MR |
4299 | active->wm[level].plane_en[PLANE_CURSOR] = is_enabled; |
4300 | active->wm[level].plane_res_b[PLANE_CURSOR] = | |
3078999f | 4301 | val & PLANE_WM_BLOCKS_MASK; |
4969d33e | 4302 | active->wm[level].plane_res_l[PLANE_CURSOR] = |
3078999f PB |
4303 | (val >> PLANE_WM_LINES_SHIFT) & |
4304 | PLANE_WM_LINES_MASK; | |
4305 | } | |
4306 | } else { | |
4307 | if (!is_cursor) { | |
4308 | active->trans_wm.plane_en[i] = is_enabled; | |
4309 | active->trans_wm.plane_res_b[i] = | |
4310 | val & PLANE_WM_BLOCKS_MASK; | |
4311 | active->trans_wm.plane_res_l[i] = | |
4312 | (val >> PLANE_WM_LINES_SHIFT) & | |
4313 | PLANE_WM_LINES_MASK; | |
4314 | } else { | |
4969d33e MR |
4315 | active->trans_wm.plane_en[PLANE_CURSOR] = is_enabled; |
4316 | active->trans_wm.plane_res_b[PLANE_CURSOR] = | |
3078999f | 4317 | val & PLANE_WM_BLOCKS_MASK; |
4969d33e | 4318 | active->trans_wm.plane_res_l[PLANE_CURSOR] = |
3078999f PB |
4319 | (val >> PLANE_WM_LINES_SHIFT) & |
4320 | PLANE_WM_LINES_MASK; | |
4321 | } | |
4322 | } | |
4323 | } | |
4324 | ||
4325 | static void skl_pipe_wm_get_hw_state(struct drm_crtc *crtc) | |
4326 | { | |
4327 | struct drm_device *dev = crtc->dev; | |
fac5e23e | 4328 | struct drm_i915_private *dev_priv = to_i915(dev); |
3078999f PB |
4329 | struct skl_wm_values *hw = &dev_priv->wm.skl_hw; |
4330 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4e0963c7 | 4331 | struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state); |
e8f1f02e | 4332 | struct skl_pipe_wm *active = &cstate->wm.skl.optimal; |
3078999f PB |
4333 | enum pipe pipe = intel_crtc->pipe; |
4334 | int level, i, max_level; | |
4335 | uint32_t temp; | |
4336 | ||
4337 | max_level = ilk_wm_max_level(dev); | |
4338 | ||
4339 | hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe)); | |
4340 | ||
4341 | for (level = 0; level <= max_level; level++) { | |
4342 | for (i = 0; i < intel_num_planes(intel_crtc); i++) | |
4343 | hw->plane[pipe][i][level] = | |
4344 | I915_READ(PLANE_WM(pipe, i, level)); | |
4969d33e | 4345 | hw->plane[pipe][PLANE_CURSOR][level] = I915_READ(CUR_WM(pipe, level)); |
3078999f PB |
4346 | } |
4347 | ||
4348 | for (i = 0; i < intel_num_planes(intel_crtc); i++) | |
4349 | hw->plane_trans[pipe][i] = I915_READ(PLANE_WM_TRANS(pipe, i)); | |
4969d33e | 4350 | hw->plane_trans[pipe][PLANE_CURSOR] = I915_READ(CUR_WM_TRANS(pipe)); |
3078999f | 4351 | |
3ef00284 | 4352 | if (!intel_crtc->active) |
3078999f PB |
4353 | return; |
4354 | ||
2b4b9f35 | 4355 | hw->dirty_pipes |= drm_crtc_mask(crtc); |
3078999f PB |
4356 | |
4357 | active->linetime = hw->wm_linetime[pipe]; | |
4358 | ||
4359 | for (level = 0; level <= max_level; level++) { | |
4360 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
4361 | temp = hw->plane[pipe][i][level]; | |
4362 | skl_pipe_wm_active_state(temp, active, false, | |
4363 | false, i, level); | |
4364 | } | |
4969d33e | 4365 | temp = hw->plane[pipe][PLANE_CURSOR][level]; |
3078999f PB |
4366 | skl_pipe_wm_active_state(temp, active, false, true, i, level); |
4367 | } | |
4368 | ||
4369 | for (i = 0; i < intel_num_planes(intel_crtc); i++) { | |
4370 | temp = hw->plane_trans[pipe][i]; | |
4371 | skl_pipe_wm_active_state(temp, active, true, false, i, 0); | |
4372 | } | |
4373 | ||
4969d33e | 4374 | temp = hw->plane_trans[pipe][PLANE_CURSOR]; |
3078999f | 4375 | skl_pipe_wm_active_state(temp, active, true, true, i, 0); |
4e0963c7 MR |
4376 | |
4377 | intel_crtc->wm.active.skl = *active; | |
3078999f PB |
4378 | } |
4379 | ||
4380 | void skl_wm_get_hw_state(struct drm_device *dev) | |
4381 | { | |
fac5e23e | 4382 | struct drm_i915_private *dev_priv = to_i915(dev); |
a269c583 | 4383 | struct skl_ddb_allocation *ddb = &dev_priv->wm.skl_hw.ddb; |
3078999f PB |
4384 | struct drm_crtc *crtc; |
4385 | ||
a269c583 | 4386 | skl_ddb_get_hw_state(dev_priv, ddb); |
3078999f PB |
4387 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
4388 | skl_pipe_wm_get_hw_state(crtc); | |
a1de91e5 | 4389 | |
279e99d7 MR |
4390 | if (dev_priv->active_crtcs) { |
4391 | /* Fully recompute DDB on first atomic commit */ | |
4392 | dev_priv->wm.distrust_bios_wm = true; | |
4393 | } else { | |
4394 | /* Easy/common case; just sanitize DDB now if everything off */ | |
4395 | memset(ddb, 0, sizeof(*ddb)); | |
4396 | } | |
3078999f PB |
4397 | } |
4398 | ||
243e6a44 VS |
4399 | static void ilk_pipe_wm_get_hw_state(struct drm_crtc *crtc) |
4400 | { | |
4401 | struct drm_device *dev = crtc->dev; | |
fac5e23e | 4402 | struct drm_i915_private *dev_priv = to_i915(dev); |
820c1980 | 4403 | struct ilk_wm_values *hw = &dev_priv->wm.hw; |
243e6a44 | 4404 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
4e0963c7 | 4405 | struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state); |
e8f1f02e | 4406 | struct intel_pipe_wm *active = &cstate->wm.ilk.optimal; |
243e6a44 | 4407 | enum pipe pipe = intel_crtc->pipe; |
f0f59a00 | 4408 | static const i915_reg_t wm0_pipe_reg[] = { |
243e6a44 VS |
4409 | [PIPE_A] = WM0_PIPEA_ILK, |
4410 | [PIPE_B] = WM0_PIPEB_ILK, | |
4411 | [PIPE_C] = WM0_PIPEC_IVB, | |
4412 | }; | |
4413 | ||
4414 | hw->wm_pipe[pipe] = I915_READ(wm0_pipe_reg[pipe]); | |
a42a5719 | 4415 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
ce0e0713 | 4416 | hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe)); |
243e6a44 | 4417 | |
15606534 VS |
4418 | memset(active, 0, sizeof(*active)); |
4419 | ||
3ef00284 | 4420 | active->pipe_enabled = intel_crtc->active; |
2a44b76b VS |
4421 | |
4422 | if (active->pipe_enabled) { | |
243e6a44 VS |
4423 | u32 tmp = hw->wm_pipe[pipe]; |
4424 | ||
4425 | /* | |
4426 | * For active pipes LP0 watermark is marked as | |
4427 | * enabled, and LP1+ watermaks as disabled since | |
4428 | * we can't really reverse compute them in case | |
4429 | * multiple pipes are active. | |
4430 | */ | |
4431 | active->wm[0].enable = true; | |
4432 | active->wm[0].pri_val = (tmp & WM0_PIPE_PLANE_MASK) >> WM0_PIPE_PLANE_SHIFT; | |
4433 | active->wm[0].spr_val = (tmp & WM0_PIPE_SPRITE_MASK) >> WM0_PIPE_SPRITE_SHIFT; | |
4434 | active->wm[0].cur_val = tmp & WM0_PIPE_CURSOR_MASK; | |
4435 | active->linetime = hw->wm_linetime[pipe]; | |
4436 | } else { | |
4437 | int level, max_level = ilk_wm_max_level(dev); | |
4438 | ||
4439 | /* | |
4440 | * For inactive pipes, all watermark levels | |
4441 | * should be marked as enabled but zeroed, | |
4442 | * which is what we'd compute them to. | |
4443 | */ | |
4444 | for (level = 0; level <= max_level; level++) | |
4445 | active->wm[level].enable = true; | |
4446 | } | |
4e0963c7 MR |
4447 | |
4448 | intel_crtc->wm.active.ilk = *active; | |
243e6a44 VS |
4449 | } |
4450 | ||
6eb1a681 VS |
4451 | #define _FW_WM(value, plane) \ |
4452 | (((value) & DSPFW_ ## plane ## _MASK) >> DSPFW_ ## plane ## _SHIFT) | |
4453 | #define _FW_WM_VLV(value, plane) \ | |
4454 | (((value) & DSPFW_ ## plane ## _MASK_VLV) >> DSPFW_ ## plane ## _SHIFT) | |
4455 | ||
4456 | static void vlv_read_wm_values(struct drm_i915_private *dev_priv, | |
4457 | struct vlv_wm_values *wm) | |
4458 | { | |
4459 | enum pipe pipe; | |
4460 | uint32_t tmp; | |
4461 | ||
4462 | for_each_pipe(dev_priv, pipe) { | |
4463 | tmp = I915_READ(VLV_DDL(pipe)); | |
4464 | ||
4465 | wm->ddl[pipe].primary = | |
4466 | (tmp >> DDL_PLANE_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
4467 | wm->ddl[pipe].cursor = | |
4468 | (tmp >> DDL_CURSOR_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
4469 | wm->ddl[pipe].sprite[0] = | |
4470 | (tmp >> DDL_SPRITE_SHIFT(0)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
4471 | wm->ddl[pipe].sprite[1] = | |
4472 | (tmp >> DDL_SPRITE_SHIFT(1)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK); | |
4473 | } | |
4474 | ||
4475 | tmp = I915_READ(DSPFW1); | |
4476 | wm->sr.plane = _FW_WM(tmp, SR); | |
4477 | wm->pipe[PIPE_B].cursor = _FW_WM(tmp, CURSORB); | |
4478 | wm->pipe[PIPE_B].primary = _FW_WM_VLV(tmp, PLANEB); | |
4479 | wm->pipe[PIPE_A].primary = _FW_WM_VLV(tmp, PLANEA); | |
4480 | ||
4481 | tmp = I915_READ(DSPFW2); | |
4482 | wm->pipe[PIPE_A].sprite[1] = _FW_WM_VLV(tmp, SPRITEB); | |
4483 | wm->pipe[PIPE_A].cursor = _FW_WM(tmp, CURSORA); | |
4484 | wm->pipe[PIPE_A].sprite[0] = _FW_WM_VLV(tmp, SPRITEA); | |
4485 | ||
4486 | tmp = I915_READ(DSPFW3); | |
4487 | wm->sr.cursor = _FW_WM(tmp, CURSOR_SR); | |
4488 | ||
4489 | if (IS_CHERRYVIEW(dev_priv)) { | |
4490 | tmp = I915_READ(DSPFW7_CHV); | |
4491 | wm->pipe[PIPE_B].sprite[1] = _FW_WM_VLV(tmp, SPRITED); | |
4492 | wm->pipe[PIPE_B].sprite[0] = _FW_WM_VLV(tmp, SPRITEC); | |
4493 | ||
4494 | tmp = I915_READ(DSPFW8_CHV); | |
4495 | wm->pipe[PIPE_C].sprite[1] = _FW_WM_VLV(tmp, SPRITEF); | |
4496 | wm->pipe[PIPE_C].sprite[0] = _FW_WM_VLV(tmp, SPRITEE); | |
4497 | ||
4498 | tmp = I915_READ(DSPFW9_CHV); | |
4499 | wm->pipe[PIPE_C].primary = _FW_WM_VLV(tmp, PLANEC); | |
4500 | wm->pipe[PIPE_C].cursor = _FW_WM(tmp, CURSORC); | |
4501 | ||
4502 | tmp = I915_READ(DSPHOWM); | |
4503 | wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9; | |
4504 | wm->pipe[PIPE_C].sprite[1] |= _FW_WM(tmp, SPRITEF_HI) << 8; | |
4505 | wm->pipe[PIPE_C].sprite[0] |= _FW_WM(tmp, SPRITEE_HI) << 8; | |
4506 | wm->pipe[PIPE_C].primary |= _FW_WM(tmp, PLANEC_HI) << 8; | |
4507 | wm->pipe[PIPE_B].sprite[1] |= _FW_WM(tmp, SPRITED_HI) << 8; | |
4508 | wm->pipe[PIPE_B].sprite[0] |= _FW_WM(tmp, SPRITEC_HI) << 8; | |
4509 | wm->pipe[PIPE_B].primary |= _FW_WM(tmp, PLANEB_HI) << 8; | |
4510 | wm->pipe[PIPE_A].sprite[1] |= _FW_WM(tmp, SPRITEB_HI) << 8; | |
4511 | wm->pipe[PIPE_A].sprite[0] |= _FW_WM(tmp, SPRITEA_HI) << 8; | |
4512 | wm->pipe[PIPE_A].primary |= _FW_WM(tmp, PLANEA_HI) << 8; | |
4513 | } else { | |
4514 | tmp = I915_READ(DSPFW7); | |
4515 | wm->pipe[PIPE_B].sprite[1] = _FW_WM_VLV(tmp, SPRITED); | |
4516 | wm->pipe[PIPE_B].sprite[0] = _FW_WM_VLV(tmp, SPRITEC); | |
4517 | ||
4518 | tmp = I915_READ(DSPHOWM); | |
4519 | wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9; | |
4520 | wm->pipe[PIPE_B].sprite[1] |= _FW_WM(tmp, SPRITED_HI) << 8; | |
4521 | wm->pipe[PIPE_B].sprite[0] |= _FW_WM(tmp, SPRITEC_HI) << 8; | |
4522 | wm->pipe[PIPE_B].primary |= _FW_WM(tmp, PLANEB_HI) << 8; | |
4523 | wm->pipe[PIPE_A].sprite[1] |= _FW_WM(tmp, SPRITEB_HI) << 8; | |
4524 | wm->pipe[PIPE_A].sprite[0] |= _FW_WM(tmp, SPRITEA_HI) << 8; | |
4525 | wm->pipe[PIPE_A].primary |= _FW_WM(tmp, PLANEA_HI) << 8; | |
4526 | } | |
4527 | } | |
4528 | ||
4529 | #undef _FW_WM | |
4530 | #undef _FW_WM_VLV | |
4531 | ||
4532 | void vlv_wm_get_hw_state(struct drm_device *dev) | |
4533 | { | |
4534 | struct drm_i915_private *dev_priv = to_i915(dev); | |
4535 | struct vlv_wm_values *wm = &dev_priv->wm.vlv; | |
4536 | struct intel_plane *plane; | |
4537 | enum pipe pipe; | |
4538 | u32 val; | |
4539 | ||
4540 | vlv_read_wm_values(dev_priv, wm); | |
4541 | ||
4542 | for_each_intel_plane(dev, plane) { | |
4543 | switch (plane->base.type) { | |
4544 | int sprite; | |
4545 | case DRM_PLANE_TYPE_CURSOR: | |
4546 | plane->wm.fifo_size = 63; | |
4547 | break; | |
4548 | case DRM_PLANE_TYPE_PRIMARY: | |
4549 | plane->wm.fifo_size = vlv_get_fifo_size(dev, plane->pipe, 0); | |
4550 | break; | |
4551 | case DRM_PLANE_TYPE_OVERLAY: | |
4552 | sprite = plane->plane; | |
4553 | plane->wm.fifo_size = vlv_get_fifo_size(dev, plane->pipe, sprite + 1); | |
4554 | break; | |
4555 | } | |
4556 | } | |
4557 | ||
4558 | wm->cxsr = I915_READ(FW_BLC_SELF_VLV) & FW_CSPWRDWNEN; | |
4559 | wm->level = VLV_WM_LEVEL_PM2; | |
4560 | ||
4561 | if (IS_CHERRYVIEW(dev_priv)) { | |
4562 | mutex_lock(&dev_priv->rps.hw_lock); | |
4563 | ||
4564 | val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ); | |
4565 | if (val & DSP_MAXFIFO_PM5_ENABLE) | |
4566 | wm->level = VLV_WM_LEVEL_PM5; | |
4567 | ||
58590c14 VS |
4568 | /* |
4569 | * If DDR DVFS is disabled in the BIOS, Punit | |
4570 | * will never ack the request. So if that happens | |
4571 | * assume we don't have to enable/disable DDR DVFS | |
4572 | * dynamically. To test that just set the REQ_ACK | |
4573 | * bit to poke the Punit, but don't change the | |
4574 | * HIGH/LOW bits so that we don't actually change | |
4575 | * the current state. | |
4576 | */ | |
6eb1a681 | 4577 | val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); |
58590c14 VS |
4578 | val |= FORCE_DDR_FREQ_REQ_ACK; |
4579 | vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val); | |
4580 | ||
4581 | if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) & | |
4582 | FORCE_DDR_FREQ_REQ_ACK) == 0, 3)) { | |
4583 | DRM_DEBUG_KMS("Punit not acking DDR DVFS request, " | |
4584 | "assuming DDR DVFS is disabled\n"); | |
4585 | dev_priv->wm.max_level = VLV_WM_LEVEL_PM5; | |
4586 | } else { | |
4587 | val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2); | |
4588 | if ((val & FORCE_DDR_HIGH_FREQ) == 0) | |
4589 | wm->level = VLV_WM_LEVEL_DDR_DVFS; | |
4590 | } | |
6eb1a681 VS |
4591 | |
4592 | mutex_unlock(&dev_priv->rps.hw_lock); | |
4593 | } | |
4594 | ||
4595 | for_each_pipe(dev_priv, pipe) | |
4596 | DRM_DEBUG_KMS("Initial watermarks: pipe %c, plane=%d, cursor=%d, sprite0=%d, sprite1=%d\n", | |
4597 | pipe_name(pipe), wm->pipe[pipe].primary, wm->pipe[pipe].cursor, | |
4598 | wm->pipe[pipe].sprite[0], wm->pipe[pipe].sprite[1]); | |
4599 | ||
4600 | DRM_DEBUG_KMS("Initial watermarks: SR plane=%d, SR cursor=%d level=%d cxsr=%d\n", | |
4601 | wm->sr.plane, wm->sr.cursor, wm->level, wm->cxsr); | |
4602 | } | |
4603 | ||
243e6a44 VS |
4604 | void ilk_wm_get_hw_state(struct drm_device *dev) |
4605 | { | |
fac5e23e | 4606 | struct drm_i915_private *dev_priv = to_i915(dev); |
820c1980 | 4607 | struct ilk_wm_values *hw = &dev_priv->wm.hw; |
243e6a44 VS |
4608 | struct drm_crtc *crtc; |
4609 | ||
70e1e0ec | 4610 | for_each_crtc(dev, crtc) |
243e6a44 VS |
4611 | ilk_pipe_wm_get_hw_state(crtc); |
4612 | ||
4613 | hw->wm_lp[0] = I915_READ(WM1_LP_ILK); | |
4614 | hw->wm_lp[1] = I915_READ(WM2_LP_ILK); | |
4615 | hw->wm_lp[2] = I915_READ(WM3_LP_ILK); | |
4616 | ||
4617 | hw->wm_lp_spr[0] = I915_READ(WM1S_LP_ILK); | |
cfa7698b VS |
4618 | if (INTEL_INFO(dev)->gen >= 7) { |
4619 | hw->wm_lp_spr[1] = I915_READ(WM2S_LP_IVB); | |
4620 | hw->wm_lp_spr[2] = I915_READ(WM3S_LP_IVB); | |
4621 | } | |
243e6a44 | 4622 | |
a42a5719 | 4623 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) |
ac9545fd VS |
4624 | hw->partitioning = (I915_READ(WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ? |
4625 | INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; | |
4626 | else if (IS_IVYBRIDGE(dev)) | |
4627 | hw->partitioning = (I915_READ(DISP_ARB_CTL2) & DISP_DATA_PARTITION_5_6) ? | |
4628 | INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; | |
243e6a44 VS |
4629 | |
4630 | hw->enable_fbc_wm = | |
4631 | !(I915_READ(DISP_ARB_CTL) & DISP_FBC_WM_DIS); | |
4632 | } | |
4633 | ||
b445e3b0 ED |
4634 | /** |
4635 | * intel_update_watermarks - update FIFO watermark values based on current modes | |
4636 | * | |
4637 | * Calculate watermark values for the various WM regs based on current mode | |
4638 | * and plane configuration. | |
4639 | * | |
4640 | * There are several cases to deal with here: | |
4641 | * - normal (i.e. non-self-refresh) | |
4642 | * - self-refresh (SR) mode | |
4643 | * - lines are large relative to FIFO size (buffer can hold up to 2) | |
4644 | * - lines are small relative to FIFO size (buffer can hold more than 2 | |
4645 | * lines), so need to account for TLB latency | |
4646 | * | |
4647 | * The normal calculation is: | |
4648 | * watermark = dotclock * bytes per pixel * latency | |
4649 | * where latency is platform & configuration dependent (we assume pessimal | |
4650 | * values here). | |
4651 | * | |
4652 | * The SR calculation is: | |
4653 | * watermark = (trunc(latency/line time)+1) * surface width * | |
4654 | * bytes per pixel | |
4655 | * where | |
4656 | * line time = htotal / dotclock | |
4657 | * surface width = hdisplay for normal plane and 64 for cursor | |
4658 | * and latency is assumed to be high, as above. | |
4659 | * | |
4660 | * The final value programmed to the register should always be rounded up, | |
4661 | * and include an extra 2 entries to account for clock crossings. | |
4662 | * | |
4663 | * We don't use the sprite, so we can ignore that. And on Crestline we have | |
4664 | * to set the non-SR watermarks to 8. | |
4665 | */ | |
46ba614c | 4666 | void intel_update_watermarks(struct drm_crtc *crtc) |
b445e3b0 | 4667 | { |
fac5e23e | 4668 | struct drm_i915_private *dev_priv = to_i915(crtc->dev); |
b445e3b0 ED |
4669 | |
4670 | if (dev_priv->display.update_wm) | |
46ba614c | 4671 | dev_priv->display.update_wm(crtc); |
b445e3b0 ED |
4672 | } |
4673 | ||
e2828914 | 4674 | /* |
9270388e | 4675 | * Lock protecting IPS related data structures |
9270388e DV |
4676 | */ |
4677 | DEFINE_SPINLOCK(mchdev_lock); | |
4678 | ||
4679 | /* Global for IPS driver to get at the current i915 device. Protected by | |
4680 | * mchdev_lock. */ | |
4681 | static struct drm_i915_private *i915_mch_dev; | |
4682 | ||
91d14251 | 4683 | bool ironlake_set_drps(struct drm_i915_private *dev_priv, u8 val) |
2b4e57bd | 4684 | { |
2b4e57bd ED |
4685 | u16 rgvswctl; |
4686 | ||
9270388e DV |
4687 | assert_spin_locked(&mchdev_lock); |
4688 | ||
2b4e57bd ED |
4689 | rgvswctl = I915_READ16(MEMSWCTL); |
4690 | if (rgvswctl & MEMCTL_CMD_STS) { | |
4691 | DRM_DEBUG("gpu busy, RCS change rejected\n"); | |
4692 | return false; /* still busy with another command */ | |
4693 | } | |
4694 | ||
4695 | rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | | |
4696 | (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; | |
4697 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
4698 | POSTING_READ16(MEMSWCTL); | |
4699 | ||
4700 | rgvswctl |= MEMCTL_CMD_STS; | |
4701 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
4702 | ||
4703 | return true; | |
4704 | } | |
4705 | ||
91d14251 | 4706 | static void ironlake_enable_drps(struct drm_i915_private *dev_priv) |
2b4e57bd | 4707 | { |
84f1b20f | 4708 | u32 rgvmodectl; |
2b4e57bd ED |
4709 | u8 fmax, fmin, fstart, vstart; |
4710 | ||
9270388e DV |
4711 | spin_lock_irq(&mchdev_lock); |
4712 | ||
84f1b20f TU |
4713 | rgvmodectl = I915_READ(MEMMODECTL); |
4714 | ||
2b4e57bd ED |
4715 | /* Enable temp reporting */ |
4716 | I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN); | |
4717 | I915_WRITE16(TSC1, I915_READ(TSC1) | TSE); | |
4718 | ||
4719 | /* 100ms RC evaluation intervals */ | |
4720 | I915_WRITE(RCUPEI, 100000); | |
4721 | I915_WRITE(RCDNEI, 100000); | |
4722 | ||
4723 | /* Set max/min thresholds to 90ms and 80ms respectively */ | |
4724 | I915_WRITE(RCBMAXAVG, 90000); | |
4725 | I915_WRITE(RCBMINAVG, 80000); | |
4726 | ||
4727 | I915_WRITE(MEMIHYST, 1); | |
4728 | ||
4729 | /* Set up min, max, and cur for interrupt handling */ | |
4730 | fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT; | |
4731 | fmin = (rgvmodectl & MEMMODE_FMIN_MASK); | |
4732 | fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >> | |
4733 | MEMMODE_FSTART_SHIFT; | |
4734 | ||
616847e7 | 4735 | vstart = (I915_READ(PXVFREQ(fstart)) & PXVFREQ_PX_MASK) >> |
2b4e57bd ED |
4736 | PXVFREQ_PX_SHIFT; |
4737 | ||
20e4d407 DV |
4738 | dev_priv->ips.fmax = fmax; /* IPS callback will increase this */ |
4739 | dev_priv->ips.fstart = fstart; | |
2b4e57bd | 4740 | |
20e4d407 DV |
4741 | dev_priv->ips.max_delay = fstart; |
4742 | dev_priv->ips.min_delay = fmin; | |
4743 | dev_priv->ips.cur_delay = fstart; | |
2b4e57bd ED |
4744 | |
4745 | DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n", | |
4746 | fmax, fmin, fstart); | |
4747 | ||
4748 | I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN); | |
4749 | ||
4750 | /* | |
4751 | * Interrupts will be enabled in ironlake_irq_postinstall | |
4752 | */ | |
4753 | ||
4754 | I915_WRITE(VIDSTART, vstart); | |
4755 | POSTING_READ(VIDSTART); | |
4756 | ||
4757 | rgvmodectl |= MEMMODE_SWMODE_EN; | |
4758 | I915_WRITE(MEMMODECTL, rgvmodectl); | |
4759 | ||
9270388e | 4760 | if (wait_for_atomic((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10)) |
2b4e57bd | 4761 | DRM_ERROR("stuck trying to change perf mode\n"); |
dd92d8de | 4762 | mdelay(1); |
2b4e57bd | 4763 | |
91d14251 | 4764 | ironlake_set_drps(dev_priv, fstart); |
2b4e57bd | 4765 | |
7d81c3e0 VS |
4766 | dev_priv->ips.last_count1 = I915_READ(DMIEC) + |
4767 | I915_READ(DDREC) + I915_READ(CSIEC); | |
20e4d407 | 4768 | dev_priv->ips.last_time1 = jiffies_to_msecs(jiffies); |
7d81c3e0 | 4769 | dev_priv->ips.last_count2 = I915_READ(GFXEC); |
5ed0bdf2 | 4770 | dev_priv->ips.last_time2 = ktime_get_raw_ns(); |
9270388e DV |
4771 | |
4772 | spin_unlock_irq(&mchdev_lock); | |
2b4e57bd ED |
4773 | } |
4774 | ||
91d14251 | 4775 | static void ironlake_disable_drps(struct drm_i915_private *dev_priv) |
2b4e57bd | 4776 | { |
9270388e DV |
4777 | u16 rgvswctl; |
4778 | ||
4779 | spin_lock_irq(&mchdev_lock); | |
4780 | ||
4781 | rgvswctl = I915_READ16(MEMSWCTL); | |
2b4e57bd ED |
4782 | |
4783 | /* Ack interrupts, disable EFC interrupt */ | |
4784 | I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN); | |
4785 | I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG); | |
4786 | I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT); | |
4787 | I915_WRITE(DEIIR, DE_PCU_EVENT); | |
4788 | I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT); | |
4789 | ||
4790 | /* Go back to the starting frequency */ | |
91d14251 | 4791 | ironlake_set_drps(dev_priv, dev_priv->ips.fstart); |
dd92d8de | 4792 | mdelay(1); |
2b4e57bd ED |
4793 | rgvswctl |= MEMCTL_CMD_STS; |
4794 | I915_WRITE(MEMSWCTL, rgvswctl); | |
dd92d8de | 4795 | mdelay(1); |
2b4e57bd | 4796 | |
9270388e | 4797 | spin_unlock_irq(&mchdev_lock); |
2b4e57bd ED |
4798 | } |
4799 | ||
acbe9475 DV |
4800 | /* There's a funny hw issue where the hw returns all 0 when reading from |
4801 | * GEN6_RP_INTERRUPT_LIMITS. Hence we always need to compute the desired value | |
4802 | * ourselves, instead of doing a rmw cycle (which might result in us clearing | |
4803 | * all limits and the gpu stuck at whatever frequency it is at atm). | |
4804 | */ | |
74ef1173 | 4805 | static u32 intel_rps_limits(struct drm_i915_private *dev_priv, u8 val) |
2b4e57bd | 4806 | { |
7b9e0ae6 | 4807 | u32 limits; |
2b4e57bd | 4808 | |
20b46e59 DV |
4809 | /* Only set the down limit when we've reached the lowest level to avoid |
4810 | * getting more interrupts, otherwise leave this clear. This prevents a | |
4811 | * race in the hw when coming out of rc6: There's a tiny window where | |
4812 | * the hw runs at the minimal clock before selecting the desired | |
4813 | * frequency, if the down threshold expires in that window we will not | |
4814 | * receive a down interrupt. */ | |
2d1fe073 | 4815 | if (IS_GEN9(dev_priv)) { |
74ef1173 AG |
4816 | limits = (dev_priv->rps.max_freq_softlimit) << 23; |
4817 | if (val <= dev_priv->rps.min_freq_softlimit) | |
4818 | limits |= (dev_priv->rps.min_freq_softlimit) << 14; | |
4819 | } else { | |
4820 | limits = dev_priv->rps.max_freq_softlimit << 24; | |
4821 | if (val <= dev_priv->rps.min_freq_softlimit) | |
4822 | limits |= dev_priv->rps.min_freq_softlimit << 16; | |
4823 | } | |
20b46e59 DV |
4824 | |
4825 | return limits; | |
4826 | } | |
4827 | ||
dd75fdc8 CW |
4828 | static void gen6_set_rps_thresholds(struct drm_i915_private *dev_priv, u8 val) |
4829 | { | |
4830 | int new_power; | |
8a586437 AG |
4831 | u32 threshold_up = 0, threshold_down = 0; /* in % */ |
4832 | u32 ei_up = 0, ei_down = 0; | |
dd75fdc8 CW |
4833 | |
4834 | new_power = dev_priv->rps.power; | |
4835 | switch (dev_priv->rps.power) { | |
4836 | case LOW_POWER: | |
a72b5623 CW |
4837 | if (val > dev_priv->rps.efficient_freq + 1 && |
4838 | val > dev_priv->rps.cur_freq) | |
dd75fdc8 CW |
4839 | new_power = BETWEEN; |
4840 | break; | |
4841 | ||
4842 | case BETWEEN: | |
a72b5623 CW |
4843 | if (val <= dev_priv->rps.efficient_freq && |
4844 | val < dev_priv->rps.cur_freq) | |
dd75fdc8 | 4845 | new_power = LOW_POWER; |
a72b5623 CW |
4846 | else if (val >= dev_priv->rps.rp0_freq && |
4847 | val > dev_priv->rps.cur_freq) | |
dd75fdc8 CW |
4848 | new_power = HIGH_POWER; |
4849 | break; | |
4850 | ||
4851 | case HIGH_POWER: | |
a72b5623 CW |
4852 | if (val < (dev_priv->rps.rp1_freq + dev_priv->rps.rp0_freq) >> 1 && |
4853 | val < dev_priv->rps.cur_freq) | |
dd75fdc8 CW |
4854 | new_power = BETWEEN; |
4855 | break; | |
4856 | } | |
4857 | /* Max/min bins are special */ | |
aed242ff | 4858 | if (val <= dev_priv->rps.min_freq_softlimit) |
dd75fdc8 | 4859 | new_power = LOW_POWER; |
aed242ff | 4860 | if (val >= dev_priv->rps.max_freq_softlimit) |
dd75fdc8 CW |
4861 | new_power = HIGH_POWER; |
4862 | if (new_power == dev_priv->rps.power) | |
4863 | return; | |
4864 | ||
4865 | /* Note the units here are not exactly 1us, but 1280ns. */ | |
4866 | switch (new_power) { | |
4867 | case LOW_POWER: | |
4868 | /* Upclock if more than 95% busy over 16ms */ | |
8a586437 AG |
4869 | ei_up = 16000; |
4870 | threshold_up = 95; | |
dd75fdc8 CW |
4871 | |
4872 | /* Downclock if less than 85% busy over 32ms */ | |
8a586437 AG |
4873 | ei_down = 32000; |
4874 | threshold_down = 85; | |
dd75fdc8 CW |
4875 | break; |
4876 | ||
4877 | case BETWEEN: | |
4878 | /* Upclock if more than 90% busy over 13ms */ | |
8a586437 AG |
4879 | ei_up = 13000; |
4880 | threshold_up = 90; | |
dd75fdc8 CW |
4881 | |
4882 | /* Downclock if less than 75% busy over 32ms */ | |
8a586437 AG |
4883 | ei_down = 32000; |
4884 | threshold_down = 75; | |
dd75fdc8 CW |
4885 | break; |
4886 | ||
4887 | case HIGH_POWER: | |
4888 | /* Upclock if more than 85% busy over 10ms */ | |
8a586437 AG |
4889 | ei_up = 10000; |
4890 | threshold_up = 85; | |
dd75fdc8 CW |
4891 | |
4892 | /* Downclock if less than 60% busy over 32ms */ | |
8a586437 AG |
4893 | ei_down = 32000; |
4894 | threshold_down = 60; | |
dd75fdc8 CW |
4895 | break; |
4896 | } | |
4897 | ||
8a586437 | 4898 | I915_WRITE(GEN6_RP_UP_EI, |
a72b5623 | 4899 | GT_INTERVAL_FROM_US(dev_priv, ei_up)); |
8a586437 | 4900 | I915_WRITE(GEN6_RP_UP_THRESHOLD, |
a72b5623 CW |
4901 | GT_INTERVAL_FROM_US(dev_priv, |
4902 | ei_up * threshold_up / 100)); | |
8a586437 AG |
4903 | |
4904 | I915_WRITE(GEN6_RP_DOWN_EI, | |
a72b5623 | 4905 | GT_INTERVAL_FROM_US(dev_priv, ei_down)); |
8a586437 | 4906 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, |
a72b5623 CW |
4907 | GT_INTERVAL_FROM_US(dev_priv, |
4908 | ei_down * threshold_down / 100)); | |
4909 | ||
4910 | I915_WRITE(GEN6_RP_CONTROL, | |
4911 | GEN6_RP_MEDIA_TURBO | | |
4912 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
4913 | GEN6_RP_MEDIA_IS_GFX | | |
4914 | GEN6_RP_ENABLE | | |
4915 | GEN6_RP_UP_BUSY_AVG | | |
4916 | GEN6_RP_DOWN_IDLE_AVG); | |
8a586437 | 4917 | |
dd75fdc8 | 4918 | dev_priv->rps.power = new_power; |
8fb55197 CW |
4919 | dev_priv->rps.up_threshold = threshold_up; |
4920 | dev_priv->rps.down_threshold = threshold_down; | |
dd75fdc8 CW |
4921 | dev_priv->rps.last_adj = 0; |
4922 | } | |
4923 | ||
2876ce73 CW |
4924 | static u32 gen6_rps_pm_mask(struct drm_i915_private *dev_priv, u8 val) |
4925 | { | |
4926 | u32 mask = 0; | |
4927 | ||
4928 | if (val > dev_priv->rps.min_freq_softlimit) | |
6f4b12f8 | 4929 | mask |= GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_DOWN_THRESHOLD | GEN6_PM_RP_DOWN_TIMEOUT; |
2876ce73 | 4930 | if (val < dev_priv->rps.max_freq_softlimit) |
6f4b12f8 | 4931 | mask |= GEN6_PM_RP_UP_EI_EXPIRED | GEN6_PM_RP_UP_THRESHOLD; |
2876ce73 | 4932 | |
7b3c29f6 CW |
4933 | mask &= dev_priv->pm_rps_events; |
4934 | ||
59d02a1f | 4935 | return gen6_sanitize_rps_pm_mask(dev_priv, ~mask); |
2876ce73 CW |
4936 | } |
4937 | ||
b8a5ff8d JM |
4938 | /* gen6_set_rps is called to update the frequency request, but should also be |
4939 | * called when the range (min_delay and max_delay) is modified so that we can | |
4940 | * update the GEN6_RP_INTERRUPT_LIMITS register accordingly. */ | |
dc97997a | 4941 | static void gen6_set_rps(struct drm_i915_private *dev_priv, u8 val) |
20b46e59 | 4942 | { |
23eafea6 | 4943 | /* WaGsvDisableTurbo: Workaround to disable turbo on BXT A* */ |
dc97997a | 4944 | if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) |
23eafea6 SAK |
4945 | return; |
4946 | ||
4fc688ce | 4947 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
aed242ff CW |
4948 | WARN_ON(val > dev_priv->rps.max_freq); |
4949 | WARN_ON(val < dev_priv->rps.min_freq); | |
004777cb | 4950 | |
eb64cad1 CW |
4951 | /* min/max delay may still have been modified so be sure to |
4952 | * write the limits value. | |
4953 | */ | |
4954 | if (val != dev_priv->rps.cur_freq) { | |
4955 | gen6_set_rps_thresholds(dev_priv, val); | |
b8a5ff8d | 4956 | |
dc97997a | 4957 | if (IS_GEN9(dev_priv)) |
5704195c AG |
4958 | I915_WRITE(GEN6_RPNSWREQ, |
4959 | GEN9_FREQUENCY(val)); | |
dc97997a | 4960 | else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) |
eb64cad1 CW |
4961 | I915_WRITE(GEN6_RPNSWREQ, |
4962 | HSW_FREQUENCY(val)); | |
4963 | else | |
4964 | I915_WRITE(GEN6_RPNSWREQ, | |
4965 | GEN6_FREQUENCY(val) | | |
4966 | GEN6_OFFSET(0) | | |
4967 | GEN6_AGGRESSIVE_TURBO); | |
b8a5ff8d | 4968 | } |
7b9e0ae6 | 4969 | |
7b9e0ae6 CW |
4970 | /* Make sure we continue to get interrupts |
4971 | * until we hit the minimum or maximum frequencies. | |
4972 | */ | |
74ef1173 | 4973 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, intel_rps_limits(dev_priv, val)); |
2876ce73 | 4974 | I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val)); |
7b9e0ae6 | 4975 | |
d5570a72 BW |
4976 | POSTING_READ(GEN6_RPNSWREQ); |
4977 | ||
b39fb297 | 4978 | dev_priv->rps.cur_freq = val; |
0f94592e | 4979 | trace_intel_gpu_freq_change(intel_gpu_freq(dev_priv, val)); |
2b4e57bd ED |
4980 | } |
4981 | ||
dc97997a | 4982 | static void valleyview_set_rps(struct drm_i915_private *dev_priv, u8 val) |
ffe02b40 | 4983 | { |
ffe02b40 | 4984 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
aed242ff CW |
4985 | WARN_ON(val > dev_priv->rps.max_freq); |
4986 | WARN_ON(val < dev_priv->rps.min_freq); | |
ffe02b40 | 4987 | |
dc97997a | 4988 | if (WARN_ONCE(IS_CHERRYVIEW(dev_priv) && (val & 1), |
ffe02b40 VS |
4989 | "Odd GPU freq value\n")) |
4990 | val &= ~1; | |
4991 | ||
cd25dd5b D |
4992 | I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val)); |
4993 | ||
8fb55197 | 4994 | if (val != dev_priv->rps.cur_freq) { |
ffe02b40 | 4995 | vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val); |
8fb55197 CW |
4996 | if (!IS_CHERRYVIEW(dev_priv)) |
4997 | gen6_set_rps_thresholds(dev_priv, val); | |
4998 | } | |
ffe02b40 | 4999 | |
ffe02b40 VS |
5000 | dev_priv->rps.cur_freq = val; |
5001 | trace_intel_gpu_freq_change(intel_gpu_freq(dev_priv, val)); | |
5002 | } | |
5003 | ||
a7f6e231 | 5004 | /* vlv_set_rps_idle: Set the frequency to idle, if Gfx clocks are down |
76c3552f D |
5005 | * |
5006 | * * If Gfx is Idle, then | |
a7f6e231 D |
5007 | * 1. Forcewake Media well. |
5008 | * 2. Request idle freq. | |
5009 | * 3. Release Forcewake of Media well. | |
76c3552f D |
5010 | */ |
5011 | static void vlv_set_rps_idle(struct drm_i915_private *dev_priv) | |
5012 | { | |
aed242ff | 5013 | u32 val = dev_priv->rps.idle_freq; |
5549d25f | 5014 | |
aed242ff | 5015 | if (dev_priv->rps.cur_freq <= val) |
76c3552f D |
5016 | return; |
5017 | ||
a7f6e231 D |
5018 | /* Wake up the media well, as that takes a lot less |
5019 | * power than the Render well. */ | |
5020 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_MEDIA); | |
dc97997a | 5021 | valleyview_set_rps(dev_priv, val); |
a7f6e231 | 5022 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_MEDIA); |
76c3552f D |
5023 | } |
5024 | ||
43cf3bf0 CW |
5025 | void gen6_rps_busy(struct drm_i915_private *dev_priv) |
5026 | { | |
5027 | mutex_lock(&dev_priv->rps.hw_lock); | |
5028 | if (dev_priv->rps.enabled) { | |
5029 | if (dev_priv->pm_rps_events & (GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED)) | |
5030 | gen6_rps_reset_ei(dev_priv); | |
5031 | I915_WRITE(GEN6_PMINTRMSK, | |
5032 | gen6_rps_pm_mask(dev_priv, dev_priv->rps.cur_freq)); | |
2b83c4c4 | 5033 | |
c33d247d CW |
5034 | gen6_enable_rps_interrupts(dev_priv); |
5035 | ||
2b83c4c4 MW |
5036 | /* Ensure we start at the user's desired frequency */ |
5037 | intel_set_rps(dev_priv, | |
5038 | clamp(dev_priv->rps.cur_freq, | |
5039 | dev_priv->rps.min_freq_softlimit, | |
5040 | dev_priv->rps.max_freq_softlimit)); | |
43cf3bf0 CW |
5041 | } |
5042 | mutex_unlock(&dev_priv->rps.hw_lock); | |
5043 | } | |
5044 | ||
b29c19b6 CW |
5045 | void gen6_rps_idle(struct drm_i915_private *dev_priv) |
5046 | { | |
c33d247d CW |
5047 | /* Flush our bottom-half so that it does not race with us |
5048 | * setting the idle frequency and so that it is bounded by | |
5049 | * our rpm wakeref. And then disable the interrupts to stop any | |
5050 | * futher RPS reclocking whilst we are asleep. | |
5051 | */ | |
5052 | gen6_disable_rps_interrupts(dev_priv); | |
5053 | ||
b29c19b6 | 5054 | mutex_lock(&dev_priv->rps.hw_lock); |
c0951f0c | 5055 | if (dev_priv->rps.enabled) { |
dc97997a | 5056 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
76c3552f | 5057 | vlv_set_rps_idle(dev_priv); |
7526ed79 | 5058 | else |
dc97997a | 5059 | gen6_set_rps(dev_priv, dev_priv->rps.idle_freq); |
c0951f0c | 5060 | dev_priv->rps.last_adj = 0; |
12c100bf VS |
5061 | I915_WRITE(GEN6_PMINTRMSK, |
5062 | gen6_sanitize_rps_pm_mask(dev_priv, ~0)); | |
c0951f0c | 5063 | } |
8d3afd7d | 5064 | mutex_unlock(&dev_priv->rps.hw_lock); |
1854d5ca | 5065 | |
8d3afd7d | 5066 | spin_lock(&dev_priv->rps.client_lock); |
1854d5ca CW |
5067 | while (!list_empty(&dev_priv->rps.clients)) |
5068 | list_del_init(dev_priv->rps.clients.next); | |
8d3afd7d | 5069 | spin_unlock(&dev_priv->rps.client_lock); |
b29c19b6 CW |
5070 | } |
5071 | ||
1854d5ca | 5072 | void gen6_rps_boost(struct drm_i915_private *dev_priv, |
e61b9958 CW |
5073 | struct intel_rps_client *rps, |
5074 | unsigned long submitted) | |
b29c19b6 | 5075 | { |
8d3afd7d CW |
5076 | /* This is intentionally racy! We peek at the state here, then |
5077 | * validate inside the RPS worker. | |
5078 | */ | |
67d97da3 | 5079 | if (!(dev_priv->gt.awake && |
8d3afd7d | 5080 | dev_priv->rps.enabled && |
29ecd78d | 5081 | dev_priv->rps.cur_freq < dev_priv->rps.boost_freq)) |
8d3afd7d | 5082 | return; |
43cf3bf0 | 5083 | |
e61b9958 CW |
5084 | /* Force a RPS boost (and don't count it against the client) if |
5085 | * the GPU is severely congested. | |
5086 | */ | |
d0bc54f2 | 5087 | if (rps && time_after(jiffies, submitted + DRM_I915_THROTTLE_JIFFIES)) |
e61b9958 CW |
5088 | rps = NULL; |
5089 | ||
8d3afd7d CW |
5090 | spin_lock(&dev_priv->rps.client_lock); |
5091 | if (rps == NULL || list_empty(&rps->link)) { | |
5092 | spin_lock_irq(&dev_priv->irq_lock); | |
5093 | if (dev_priv->rps.interrupts_enabled) { | |
5094 | dev_priv->rps.client_boost = true; | |
c33d247d | 5095 | schedule_work(&dev_priv->rps.work); |
8d3afd7d CW |
5096 | } |
5097 | spin_unlock_irq(&dev_priv->irq_lock); | |
1854d5ca | 5098 | |
2e1b8730 CW |
5099 | if (rps != NULL) { |
5100 | list_add(&rps->link, &dev_priv->rps.clients); | |
5101 | rps->boosts++; | |
1854d5ca CW |
5102 | } else |
5103 | dev_priv->rps.boosts++; | |
c0951f0c | 5104 | } |
8d3afd7d | 5105 | spin_unlock(&dev_priv->rps.client_lock); |
b29c19b6 CW |
5106 | } |
5107 | ||
dc97997a | 5108 | void intel_set_rps(struct drm_i915_private *dev_priv, u8 val) |
0a073b84 | 5109 | { |
dc97997a CW |
5110 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) |
5111 | valleyview_set_rps(dev_priv, val); | |
ffe02b40 | 5112 | else |
dc97997a | 5113 | gen6_set_rps(dev_priv, val); |
0a073b84 JB |
5114 | } |
5115 | ||
dc97997a | 5116 | static void gen9_disable_rc6(struct drm_i915_private *dev_priv) |
20e49366 | 5117 | { |
20e49366 | 5118 | I915_WRITE(GEN6_RC_CONTROL, 0); |
38c23527 | 5119 | I915_WRITE(GEN9_PG_ENABLE, 0); |
20e49366 ZW |
5120 | } |
5121 | ||
dc97997a | 5122 | static void gen9_disable_rps(struct drm_i915_private *dev_priv) |
2030d684 | 5123 | { |
2030d684 AG |
5124 | I915_WRITE(GEN6_RP_CONTROL, 0); |
5125 | } | |
5126 | ||
dc97997a | 5127 | static void gen6_disable_rps(struct drm_i915_private *dev_priv) |
d20d4f0c | 5128 | { |
d20d4f0c | 5129 | I915_WRITE(GEN6_RC_CONTROL, 0); |
44fc7d5c | 5130 | I915_WRITE(GEN6_RPNSWREQ, 1 << 31); |
2030d684 | 5131 | I915_WRITE(GEN6_RP_CONTROL, 0); |
44fc7d5c DV |
5132 | } |
5133 | ||
dc97997a | 5134 | static void cherryview_disable_rps(struct drm_i915_private *dev_priv) |
38807746 | 5135 | { |
38807746 D |
5136 | I915_WRITE(GEN6_RC_CONTROL, 0); |
5137 | } | |
5138 | ||
dc97997a | 5139 | static void valleyview_disable_rps(struct drm_i915_private *dev_priv) |
44fc7d5c | 5140 | { |
98a2e5f9 D |
5141 | /* we're doing forcewake before Disabling RC6, |
5142 | * This what the BIOS expects when going into suspend */ | |
59bad947 | 5143 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
98a2e5f9 | 5144 | |
44fc7d5c | 5145 | I915_WRITE(GEN6_RC_CONTROL, 0); |
d20d4f0c | 5146 | |
59bad947 | 5147 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
d20d4f0c JB |
5148 | } |
5149 | ||
dc97997a | 5150 | static void intel_print_rc6_info(struct drm_i915_private *dev_priv, u32 mode) |
dc39fff7 | 5151 | { |
dc97997a | 5152 | if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { |
91ca689a ID |
5153 | if (mode & (GEN7_RC_CTL_TO_MODE | GEN6_RC_CTL_EI_MODE(1))) |
5154 | mode = GEN6_RC_CTL_RC6_ENABLE; | |
5155 | else | |
5156 | mode = 0; | |
5157 | } | |
dc97997a | 5158 | if (HAS_RC6p(dev_priv)) |
b99d49cc ID |
5159 | DRM_DEBUG_DRIVER("Enabling RC6 states: " |
5160 | "RC6 %s RC6p %s RC6pp %s\n", | |
5161 | onoff(mode & GEN6_RC_CTL_RC6_ENABLE), | |
5162 | onoff(mode & GEN6_RC_CTL_RC6p_ENABLE), | |
5163 | onoff(mode & GEN6_RC_CTL_RC6pp_ENABLE)); | |
58abf1da RV |
5164 | |
5165 | else | |
b99d49cc ID |
5166 | DRM_DEBUG_DRIVER("Enabling RC6 states: RC6 %s\n", |
5167 | onoff(mode & GEN6_RC_CTL_RC6_ENABLE)); | |
dc39fff7 BW |
5168 | } |
5169 | ||
dc97997a | 5170 | static bool bxt_check_bios_rc6_setup(struct drm_i915_private *dev_priv) |
274008e8 | 5171 | { |
72e96d64 | 5172 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
274008e8 SAK |
5173 | bool enable_rc6 = true; |
5174 | unsigned long rc6_ctx_base; | |
fc619841 ID |
5175 | u32 rc_ctl; |
5176 | int rc_sw_target; | |
5177 | ||
5178 | rc_ctl = I915_READ(GEN6_RC_CONTROL); | |
5179 | rc_sw_target = (I915_READ(GEN6_RC_STATE) & RC_SW_TARGET_STATE_MASK) >> | |
5180 | RC_SW_TARGET_STATE_SHIFT; | |
5181 | DRM_DEBUG_DRIVER("BIOS enabled RC states: " | |
5182 | "HW_CTRL %s HW_RC6 %s SW_TARGET_STATE %x\n", | |
5183 | onoff(rc_ctl & GEN6_RC_CTL_HW_ENABLE), | |
5184 | onoff(rc_ctl & GEN6_RC_CTL_RC6_ENABLE), | |
5185 | rc_sw_target); | |
274008e8 SAK |
5186 | |
5187 | if (!(I915_READ(RC6_LOCATION) & RC6_CTX_IN_DRAM)) { | |
b99d49cc | 5188 | DRM_DEBUG_DRIVER("RC6 Base location not set properly.\n"); |
274008e8 SAK |
5189 | enable_rc6 = false; |
5190 | } | |
5191 | ||
5192 | /* | |
5193 | * The exact context size is not known for BXT, so assume a page size | |
5194 | * for this check. | |
5195 | */ | |
5196 | rc6_ctx_base = I915_READ(RC6_CTX_BASE) & RC6_CTX_BASE_MASK; | |
72e96d64 JL |
5197 | if (!((rc6_ctx_base >= ggtt->stolen_reserved_base) && |
5198 | (rc6_ctx_base + PAGE_SIZE <= ggtt->stolen_reserved_base + | |
5199 | ggtt->stolen_reserved_size))) { | |
b99d49cc | 5200 | DRM_DEBUG_DRIVER("RC6 Base address not as expected.\n"); |
274008e8 SAK |
5201 | enable_rc6 = false; |
5202 | } | |
5203 | ||
5204 | if (!(((I915_READ(PWRCTX_MAXCNT_RCSUNIT) & IDLE_TIME_MASK) > 1) && | |
5205 | ((I915_READ(PWRCTX_MAXCNT_VCSUNIT0) & IDLE_TIME_MASK) > 1) && | |
5206 | ((I915_READ(PWRCTX_MAXCNT_BCSUNIT) & IDLE_TIME_MASK) > 1) && | |
5207 | ((I915_READ(PWRCTX_MAXCNT_VECSUNIT) & IDLE_TIME_MASK) > 1))) { | |
b99d49cc | 5208 | DRM_DEBUG_DRIVER("Engine Idle wait time not set properly.\n"); |
274008e8 SAK |
5209 | enable_rc6 = false; |
5210 | } | |
5211 | ||
fc619841 ID |
5212 | if (!I915_READ(GEN8_PUSHBUS_CONTROL) || |
5213 | !I915_READ(GEN8_PUSHBUS_ENABLE) || | |
5214 | !I915_READ(GEN8_PUSHBUS_SHIFT)) { | |
5215 | DRM_DEBUG_DRIVER("Pushbus not setup properly.\n"); | |
5216 | enable_rc6 = false; | |
5217 | } | |
5218 | ||
5219 | if (!I915_READ(GEN6_GFXPAUSE)) { | |
5220 | DRM_DEBUG_DRIVER("GFX pause not setup properly.\n"); | |
5221 | enable_rc6 = false; | |
5222 | } | |
5223 | ||
5224 | if (!I915_READ(GEN8_MISC_CTRL0)) { | |
5225 | DRM_DEBUG_DRIVER("GPM control not setup properly.\n"); | |
274008e8 SAK |
5226 | enable_rc6 = false; |
5227 | } | |
5228 | ||
5229 | return enable_rc6; | |
5230 | } | |
5231 | ||
dc97997a | 5232 | int sanitize_rc6_option(struct drm_i915_private *dev_priv, int enable_rc6) |
2b4e57bd | 5233 | { |
e7d66d89 | 5234 | /* No RC6 before Ironlake and code is gone for ilk. */ |
dc97997a | 5235 | if (INTEL_INFO(dev_priv)->gen < 6) |
e6069ca8 ID |
5236 | return 0; |
5237 | ||
274008e8 SAK |
5238 | if (!enable_rc6) |
5239 | return 0; | |
5240 | ||
dc97997a | 5241 | if (IS_BROXTON(dev_priv) && !bxt_check_bios_rc6_setup(dev_priv)) { |
274008e8 SAK |
5242 | DRM_INFO("RC6 disabled by BIOS\n"); |
5243 | return 0; | |
5244 | } | |
5245 | ||
456470eb | 5246 | /* Respect the kernel parameter if it is set */ |
e6069ca8 ID |
5247 | if (enable_rc6 >= 0) { |
5248 | int mask; | |
5249 | ||
dc97997a | 5250 | if (HAS_RC6p(dev_priv)) |
e6069ca8 ID |
5251 | mask = INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE | |
5252 | INTEL_RC6pp_ENABLE; | |
5253 | else | |
5254 | mask = INTEL_RC6_ENABLE; | |
5255 | ||
5256 | if ((enable_rc6 & mask) != enable_rc6) | |
b99d49cc ID |
5257 | DRM_DEBUG_DRIVER("Adjusting RC6 mask to %d " |
5258 | "(requested %d, valid %d)\n", | |
5259 | enable_rc6 & mask, enable_rc6, mask); | |
e6069ca8 ID |
5260 | |
5261 | return enable_rc6 & mask; | |
5262 | } | |
2b4e57bd | 5263 | |
dc97997a | 5264 | if (IS_IVYBRIDGE(dev_priv)) |
cca84a1f | 5265 | return (INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE); |
8bade1ad BW |
5266 | |
5267 | return INTEL_RC6_ENABLE; | |
2b4e57bd ED |
5268 | } |
5269 | ||
dc97997a | 5270 | static void gen6_init_rps_frequencies(struct drm_i915_private *dev_priv) |
3280e8b0 BW |
5271 | { |
5272 | /* All of these values are in units of 50MHz */ | |
773ea9a8 | 5273 | |
93ee2920 | 5274 | /* static values from HW: RP0 > RP1 > RPn (min_freq) */ |
dc97997a | 5275 | if (IS_BROXTON(dev_priv)) { |
773ea9a8 | 5276 | u32 rp_state_cap = I915_READ(BXT_RP_STATE_CAP); |
35040562 BP |
5277 | dev_priv->rps.rp0_freq = (rp_state_cap >> 16) & 0xff; |
5278 | dev_priv->rps.rp1_freq = (rp_state_cap >> 8) & 0xff; | |
5279 | dev_priv->rps.min_freq = (rp_state_cap >> 0) & 0xff; | |
5280 | } else { | |
773ea9a8 | 5281 | u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); |
35040562 BP |
5282 | dev_priv->rps.rp0_freq = (rp_state_cap >> 0) & 0xff; |
5283 | dev_priv->rps.rp1_freq = (rp_state_cap >> 8) & 0xff; | |
5284 | dev_priv->rps.min_freq = (rp_state_cap >> 16) & 0xff; | |
5285 | } | |
3280e8b0 | 5286 | /* hw_max = RP0 until we check for overclocking */ |
773ea9a8 | 5287 | dev_priv->rps.max_freq = dev_priv->rps.rp0_freq; |
3280e8b0 | 5288 | |
93ee2920 | 5289 | dev_priv->rps.efficient_freq = dev_priv->rps.rp1_freq; |
dc97997a CW |
5290 | if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv) || |
5291 | IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { | |
773ea9a8 CW |
5292 | u32 ddcc_status = 0; |
5293 | ||
5294 | if (sandybridge_pcode_read(dev_priv, | |
5295 | HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL, | |
5296 | &ddcc_status) == 0) | |
93ee2920 | 5297 | dev_priv->rps.efficient_freq = |
46efa4ab TR |
5298 | clamp_t(u8, |
5299 | ((ddcc_status >> 8) & 0xff), | |
5300 | dev_priv->rps.min_freq, | |
5301 | dev_priv->rps.max_freq); | |
93ee2920 TR |
5302 | } |
5303 | ||
dc97997a | 5304 | if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { |
c5e0688c | 5305 | /* Store the frequency values in 16.66 MHZ units, which is |
773ea9a8 CW |
5306 | * the natural hardware unit for SKL |
5307 | */ | |
c5e0688c AG |
5308 | dev_priv->rps.rp0_freq *= GEN9_FREQ_SCALER; |
5309 | dev_priv->rps.rp1_freq *= GEN9_FREQ_SCALER; | |
5310 | dev_priv->rps.min_freq *= GEN9_FREQ_SCALER; | |
5311 | dev_priv->rps.max_freq *= GEN9_FREQ_SCALER; | |
5312 | dev_priv->rps.efficient_freq *= GEN9_FREQ_SCALER; | |
5313 | } | |
3280e8b0 BW |
5314 | } |
5315 | ||
3a45b05c CW |
5316 | static void reset_rps(struct drm_i915_private *dev_priv, |
5317 | void (*set)(struct drm_i915_private *, u8)) | |
5318 | { | |
5319 | u8 freq = dev_priv->rps.cur_freq; | |
5320 | ||
5321 | /* force a reset */ | |
5322 | dev_priv->rps.power = -1; | |
5323 | dev_priv->rps.cur_freq = -1; | |
5324 | ||
5325 | set(dev_priv, freq); | |
5326 | } | |
5327 | ||
b6fef0ef | 5328 | /* See the Gen9_GT_PM_Programming_Guide doc for the below */ |
dc97997a | 5329 | static void gen9_enable_rps(struct drm_i915_private *dev_priv) |
b6fef0ef | 5330 | { |
b6fef0ef JB |
5331 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
5332 | ||
23eafea6 | 5333 | /* WaGsvDisableTurbo: Workaround to disable turbo on BXT A* */ |
dc97997a | 5334 | if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) { |
2030d684 AG |
5335 | /* |
5336 | * BIOS could leave the Hw Turbo enabled, so need to explicitly | |
5337 | * clear out the Control register just to avoid inconsitency | |
5338 | * with debugfs interface, which will show Turbo as enabled | |
5339 | * only and that is not expected by the User after adding the | |
5340 | * WaGsvDisableTurbo. Apart from this there is no problem even | |
5341 | * if the Turbo is left enabled in the Control register, as the | |
5342 | * Up/Down interrupts would remain masked. | |
5343 | */ | |
dc97997a | 5344 | gen9_disable_rps(dev_priv); |
23eafea6 SAK |
5345 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
5346 | return; | |
5347 | } | |
5348 | ||
0beb059a AG |
5349 | /* Program defaults and thresholds for RPS*/ |
5350 | I915_WRITE(GEN6_RC_VIDEO_FREQ, | |
5351 | GEN9_FREQUENCY(dev_priv->rps.rp1_freq)); | |
5352 | ||
5353 | /* 1 second timeout*/ | |
5354 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, | |
5355 | GT_INTERVAL_FROM_US(dev_priv, 1000000)); | |
5356 | ||
b6fef0ef | 5357 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 0xa); |
b6fef0ef | 5358 | |
0beb059a AG |
5359 | /* Leaning on the below call to gen6_set_rps to program/setup the |
5360 | * Up/Down EI & threshold registers, as well as the RP_CONTROL, | |
5361 | * RP_INTERRUPT_LIMITS & RPNSWREQ registers */ | |
3a45b05c | 5362 | reset_rps(dev_priv, gen6_set_rps); |
b6fef0ef JB |
5363 | |
5364 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); | |
5365 | } | |
5366 | ||
dc97997a | 5367 | static void gen9_enable_rc6(struct drm_i915_private *dev_priv) |
20e49366 | 5368 | { |
e2f80391 | 5369 | struct intel_engine_cs *engine; |
3b3f1650 | 5370 | enum intel_engine_id id; |
20e49366 | 5371 | uint32_t rc6_mask = 0; |
20e49366 ZW |
5372 | |
5373 | /* 1a: Software RC state - RC0 */ | |
5374 | I915_WRITE(GEN6_RC_STATE, 0); | |
5375 | ||
5376 | /* 1b: Get forcewake during program sequence. Although the driver | |
5377 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 5378 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
20e49366 ZW |
5379 | |
5380 | /* 2a: Disable RC states. */ | |
5381 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
5382 | ||
5383 | /* 2b: Program RC6 thresholds.*/ | |
63a4dec2 SAK |
5384 | |
5385 | /* WaRsDoubleRc6WrlWithCoarsePowerGating: Doubling WRL only when CPG is enabled */ | |
dc97997a | 5386 | if (IS_SKYLAKE(dev_priv)) |
63a4dec2 SAK |
5387 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 108 << 16); |
5388 | else | |
5389 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16); | |
20e49366 ZW |
5390 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ |
5391 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
3b3f1650 | 5392 | for_each_engine(engine, dev_priv, id) |
e2f80391 | 5393 | I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10); |
97c322e7 | 5394 | |
1a3d1898 | 5395 | if (HAS_GUC(dev_priv)) |
97c322e7 SAK |
5396 | I915_WRITE(GUC_MAX_IDLE_COUNT, 0xA); |
5397 | ||
20e49366 | 5398 | I915_WRITE(GEN6_RC_SLEEP, 0); |
20e49366 | 5399 | |
38c23527 ZW |
5400 | /* 2c: Program Coarse Power Gating Policies. */ |
5401 | I915_WRITE(GEN9_MEDIA_PG_IDLE_HYSTERESIS, 25); | |
5402 | I915_WRITE(GEN9_RENDER_PG_IDLE_HYSTERESIS, 25); | |
5403 | ||
20e49366 | 5404 | /* 3a: Enable RC6 */ |
dc97997a | 5405 | if (intel_enable_rc6() & INTEL_RC6_ENABLE) |
20e49366 | 5406 | rc6_mask = GEN6_RC_CTL_RC6_ENABLE; |
87ad3212 | 5407 | DRM_INFO("RC6 %s\n", onoff(rc6_mask & GEN6_RC_CTL_RC6_ENABLE)); |
4ff40a41 | 5408 | /* WaRsUseTimeoutMode:bxt */ |
9fc736e8 | 5409 | if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) { |
3e7732a0 | 5410 | I915_WRITE(GEN6_RC6_THRESHOLD, 625); /* 800us */ |
e3429cd2 SAK |
5411 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | |
5412 | GEN7_RC_CTL_TO_MODE | | |
5413 | rc6_mask); | |
3e7732a0 SAK |
5414 | } else { |
5415 | I915_WRITE(GEN6_RC6_THRESHOLD, 37500); /* 37.5/125ms per EI */ | |
e3429cd2 SAK |
5416 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | |
5417 | GEN6_RC_CTL_EI_MODE(1) | | |
5418 | rc6_mask); | |
3e7732a0 | 5419 | } |
20e49366 | 5420 | |
cb07bae0 SK |
5421 | /* |
5422 | * 3b: Enable Coarse Power Gating only when RC6 is enabled. | |
f2d2fe95 | 5423 | * WaRsDisableCoarsePowerGating:skl,bxt - Render/Media PG need to be disabled with RC6. |
cb07bae0 | 5424 | */ |
dc97997a | 5425 | if (NEEDS_WaRsDisableCoarsePowerGating(dev_priv)) |
f2d2fe95 SAK |
5426 | I915_WRITE(GEN9_PG_ENABLE, 0); |
5427 | else | |
5428 | I915_WRITE(GEN9_PG_ENABLE, (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ? | |
5429 | (GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE) : 0); | |
38c23527 | 5430 | |
59bad947 | 5431 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
20e49366 ZW |
5432 | } |
5433 | ||
dc97997a | 5434 | static void gen8_enable_rps(struct drm_i915_private *dev_priv) |
6edee7f3 | 5435 | { |
e2f80391 | 5436 | struct intel_engine_cs *engine; |
3b3f1650 | 5437 | enum intel_engine_id id; |
93ee2920 | 5438 | uint32_t rc6_mask = 0; |
6edee7f3 BW |
5439 | |
5440 | /* 1a: Software RC state - RC0 */ | |
5441 | I915_WRITE(GEN6_RC_STATE, 0); | |
5442 | ||
5443 | /* 1c & 1d: Get forcewake during program sequence. Although the driver | |
5444 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 5445 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
6edee7f3 BW |
5446 | |
5447 | /* 2a: Disable RC states. */ | |
5448 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
5449 | ||
6edee7f3 BW |
5450 | /* 2b: Program RC6 thresholds.*/ |
5451 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16); | |
5452 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ | |
5453 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
3b3f1650 | 5454 | for_each_engine(engine, dev_priv, id) |
e2f80391 | 5455 | I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10); |
6edee7f3 | 5456 | I915_WRITE(GEN6_RC_SLEEP, 0); |
dc97997a | 5457 | if (IS_BROADWELL(dev_priv)) |
0d68b25e TR |
5458 | I915_WRITE(GEN6_RC6_THRESHOLD, 625); /* 800us/1.28 for TO */ |
5459 | else | |
5460 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); /* 50/125ms per EI */ | |
6edee7f3 BW |
5461 | |
5462 | /* 3: Enable RC6 */ | |
dc97997a | 5463 | if (intel_enable_rc6() & INTEL_RC6_ENABLE) |
6edee7f3 | 5464 | rc6_mask = GEN6_RC_CTL_RC6_ENABLE; |
dc97997a CW |
5465 | intel_print_rc6_info(dev_priv, rc6_mask); |
5466 | if (IS_BROADWELL(dev_priv)) | |
0d68b25e TR |
5467 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | |
5468 | GEN7_RC_CTL_TO_MODE | | |
5469 | rc6_mask); | |
5470 | else | |
5471 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | | |
5472 | GEN6_RC_CTL_EI_MODE(1) | | |
5473 | rc6_mask); | |
6edee7f3 BW |
5474 | |
5475 | /* 4 Program defaults and thresholds for RPS*/ | |
f9bdc585 BW |
5476 | I915_WRITE(GEN6_RPNSWREQ, |
5477 | HSW_FREQUENCY(dev_priv->rps.rp1_freq)); | |
5478 | I915_WRITE(GEN6_RC_VIDEO_FREQ, | |
5479 | HSW_FREQUENCY(dev_priv->rps.rp1_freq)); | |
7526ed79 DV |
5480 | /* NB: Docs say 1s, and 1000000 - which aren't equivalent */ |
5481 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 100000000 / 128); /* 1 second timeout */ | |
5482 | ||
5483 | /* Docs recommend 900MHz, and 300 MHz respectively */ | |
5484 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, | |
5485 | dev_priv->rps.max_freq_softlimit << 24 | | |
5486 | dev_priv->rps.min_freq_softlimit << 16); | |
5487 | ||
5488 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 7600000 / 128); /* 76ms busyness per EI, 90% */ | |
5489 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 31300000 / 128); /* 313ms busyness per EI, 70%*/ | |
5490 | I915_WRITE(GEN6_RP_UP_EI, 66000); /* 84.48ms, XXX: random? */ | |
5491 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); /* 448ms, XXX: random? */ | |
5492 | ||
5493 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
6edee7f3 BW |
5494 | |
5495 | /* 5: Enable RPS */ | |
7526ed79 DV |
5496 | I915_WRITE(GEN6_RP_CONTROL, |
5497 | GEN6_RP_MEDIA_TURBO | | |
5498 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
5499 | GEN6_RP_MEDIA_IS_GFX | | |
5500 | GEN6_RP_ENABLE | | |
5501 | GEN6_RP_UP_BUSY_AVG | | |
5502 | GEN6_RP_DOWN_IDLE_AVG); | |
5503 | ||
5504 | /* 6: Ring frequency + overclocking (our driver does this later */ | |
5505 | ||
3a45b05c | 5506 | reset_rps(dev_priv, gen6_set_rps); |
7526ed79 | 5507 | |
59bad947 | 5508 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
6edee7f3 BW |
5509 | } |
5510 | ||
dc97997a | 5511 | static void gen6_enable_rps(struct drm_i915_private *dev_priv) |
2b4e57bd | 5512 | { |
e2f80391 | 5513 | struct intel_engine_cs *engine; |
3b3f1650 | 5514 | enum intel_engine_id id; |
99ac9612 | 5515 | u32 rc6vids, rc6_mask = 0; |
2b4e57bd | 5516 | u32 gtfifodbg; |
2b4e57bd | 5517 | int rc6_mode; |
b4ac5afc | 5518 | int ret; |
2b4e57bd | 5519 | |
4fc688ce | 5520 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 5521 | |
2b4e57bd ED |
5522 | /* Here begins a magic sequence of register writes to enable |
5523 | * auto-downclocking. | |
5524 | * | |
5525 | * Perhaps there might be some value in exposing these to | |
5526 | * userspace... | |
5527 | */ | |
5528 | I915_WRITE(GEN6_RC_STATE, 0); | |
2b4e57bd ED |
5529 | |
5530 | /* Clear the DBG now so we don't confuse earlier errors */ | |
297b32ec VS |
5531 | gtfifodbg = I915_READ(GTFIFODBG); |
5532 | if (gtfifodbg) { | |
2b4e57bd ED |
5533 | DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg); |
5534 | I915_WRITE(GTFIFODBG, gtfifodbg); | |
5535 | } | |
5536 | ||
59bad947 | 5537 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
2b4e57bd ED |
5538 | |
5539 | /* disable the counters and set deterministic thresholds */ | |
5540 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
5541 | ||
5542 | I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16); | |
5543 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30); | |
5544 | I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30); | |
5545 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
5546 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
5547 | ||
3b3f1650 | 5548 | for_each_engine(engine, dev_priv, id) |
e2f80391 | 5549 | I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10); |
2b4e57bd ED |
5550 | |
5551 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
5552 | I915_WRITE(GEN6_RC1e_THRESHOLD, 1000); | |
dc97997a | 5553 | if (IS_IVYBRIDGE(dev_priv)) |
351aa566 SM |
5554 | I915_WRITE(GEN6_RC6_THRESHOLD, 125000); |
5555 | else | |
5556 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); | |
0920a487 | 5557 | I915_WRITE(GEN6_RC6p_THRESHOLD, 150000); |
2b4e57bd ED |
5558 | I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */ |
5559 | ||
5a7dc92a | 5560 | /* Check if we are enabling RC6 */ |
dc97997a | 5561 | rc6_mode = intel_enable_rc6(); |
2b4e57bd ED |
5562 | if (rc6_mode & INTEL_RC6_ENABLE) |
5563 | rc6_mask |= GEN6_RC_CTL_RC6_ENABLE; | |
5564 | ||
5a7dc92a | 5565 | /* We don't use those on Haswell */ |
dc97997a | 5566 | if (!IS_HASWELL(dev_priv)) { |
5a7dc92a ED |
5567 | if (rc6_mode & INTEL_RC6p_ENABLE) |
5568 | rc6_mask |= GEN6_RC_CTL_RC6p_ENABLE; | |
2b4e57bd | 5569 | |
5a7dc92a ED |
5570 | if (rc6_mode & INTEL_RC6pp_ENABLE) |
5571 | rc6_mask |= GEN6_RC_CTL_RC6pp_ENABLE; | |
5572 | } | |
2b4e57bd | 5573 | |
dc97997a | 5574 | intel_print_rc6_info(dev_priv, rc6_mask); |
2b4e57bd ED |
5575 | |
5576 | I915_WRITE(GEN6_RC_CONTROL, | |
5577 | rc6_mask | | |
5578 | GEN6_RC_CTL_EI_MODE(1) | | |
5579 | GEN6_RC_CTL_HW_ENABLE); | |
5580 | ||
dd75fdc8 CW |
5581 | /* Power down if completely idle for over 50ms */ |
5582 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 50000); | |
2b4e57bd | 5583 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); |
2b4e57bd | 5584 | |
42c0526c | 5585 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_MIN_FREQ_TABLE, 0); |
d060c169 | 5586 | if (ret) |
42c0526c | 5587 | DRM_DEBUG_DRIVER("Failed to set the min frequency\n"); |
d060c169 | 5588 | |
3a45b05c | 5589 | reset_rps(dev_priv, gen6_set_rps); |
2b4e57bd | 5590 | |
31643d54 BW |
5591 | rc6vids = 0; |
5592 | ret = sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids); | |
dc97997a | 5593 | if (IS_GEN6(dev_priv) && ret) { |
31643d54 | 5594 | DRM_DEBUG_DRIVER("Couldn't check for BIOS workaround\n"); |
dc97997a | 5595 | } else if (IS_GEN6(dev_priv) && (GEN6_DECODE_RC6_VID(rc6vids & 0xff) < 450)) { |
31643d54 BW |
5596 | DRM_DEBUG_DRIVER("You should update your BIOS. Correcting minimum rc6 voltage (%dmV->%dmV)\n", |
5597 | GEN6_DECODE_RC6_VID(rc6vids & 0xff), 450); | |
5598 | rc6vids &= 0xffff00; | |
5599 | rc6vids |= GEN6_ENCODE_RC6_VID(450); | |
5600 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_RC6VIDS, rc6vids); | |
5601 | if (ret) | |
5602 | DRM_ERROR("Couldn't fix incorrect rc6 voltage\n"); | |
5603 | } | |
5604 | ||
59bad947 | 5605 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
2b4e57bd ED |
5606 | } |
5607 | ||
fb7404e8 | 5608 | static void gen6_update_ring_freq(struct drm_i915_private *dev_priv) |
2b4e57bd ED |
5609 | { |
5610 | int min_freq = 15; | |
3ebecd07 CW |
5611 | unsigned int gpu_freq; |
5612 | unsigned int max_ia_freq, min_ring_freq; | |
4c8c7743 | 5613 | unsigned int max_gpu_freq, min_gpu_freq; |
2b4e57bd | 5614 | int scaling_factor = 180; |
eda79642 | 5615 | struct cpufreq_policy *policy; |
2b4e57bd | 5616 | |
4fc688ce | 5617 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 5618 | |
eda79642 BW |
5619 | policy = cpufreq_cpu_get(0); |
5620 | if (policy) { | |
5621 | max_ia_freq = policy->cpuinfo.max_freq; | |
5622 | cpufreq_cpu_put(policy); | |
5623 | } else { | |
5624 | /* | |
5625 | * Default to measured freq if none found, PCU will ensure we | |
5626 | * don't go over | |
5627 | */ | |
2b4e57bd | 5628 | max_ia_freq = tsc_khz; |
eda79642 | 5629 | } |
2b4e57bd ED |
5630 | |
5631 | /* Convert from kHz to MHz */ | |
5632 | max_ia_freq /= 1000; | |
5633 | ||
153b4b95 | 5634 | min_ring_freq = I915_READ(DCLK) & 0xf; |
f6aca45c BW |
5635 | /* convert DDR frequency from units of 266.6MHz to bandwidth */ |
5636 | min_ring_freq = mult_frac(min_ring_freq, 8, 3); | |
3ebecd07 | 5637 | |
dc97997a | 5638 | if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { |
4c8c7743 AG |
5639 | /* Convert GT frequency to 50 HZ units */ |
5640 | min_gpu_freq = dev_priv->rps.min_freq / GEN9_FREQ_SCALER; | |
5641 | max_gpu_freq = dev_priv->rps.max_freq / GEN9_FREQ_SCALER; | |
5642 | } else { | |
5643 | min_gpu_freq = dev_priv->rps.min_freq; | |
5644 | max_gpu_freq = dev_priv->rps.max_freq; | |
5645 | } | |
5646 | ||
2b4e57bd ED |
5647 | /* |
5648 | * For each potential GPU frequency, load a ring frequency we'd like | |
5649 | * to use for memory access. We do this by specifying the IA frequency | |
5650 | * the PCU should use as a reference to determine the ring frequency. | |
5651 | */ | |
4c8c7743 AG |
5652 | for (gpu_freq = max_gpu_freq; gpu_freq >= min_gpu_freq; gpu_freq--) { |
5653 | int diff = max_gpu_freq - gpu_freq; | |
3ebecd07 CW |
5654 | unsigned int ia_freq = 0, ring_freq = 0; |
5655 | ||
dc97997a | 5656 | if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { |
4c8c7743 AG |
5657 | /* |
5658 | * ring_freq = 2 * GT. ring_freq is in 100MHz units | |
5659 | * No floor required for ring frequency on SKL. | |
5660 | */ | |
5661 | ring_freq = gpu_freq; | |
dc97997a | 5662 | } else if (INTEL_INFO(dev_priv)->gen >= 8) { |
46c764d4 BW |
5663 | /* max(2 * GT, DDR). NB: GT is 50MHz units */ |
5664 | ring_freq = max(min_ring_freq, gpu_freq); | |
dc97997a | 5665 | } else if (IS_HASWELL(dev_priv)) { |
f6aca45c | 5666 | ring_freq = mult_frac(gpu_freq, 5, 4); |
3ebecd07 CW |
5667 | ring_freq = max(min_ring_freq, ring_freq); |
5668 | /* leave ia_freq as the default, chosen by cpufreq */ | |
5669 | } else { | |
5670 | /* On older processors, there is no separate ring | |
5671 | * clock domain, so in order to boost the bandwidth | |
5672 | * of the ring, we need to upclock the CPU (ia_freq). | |
5673 | * | |
5674 | * For GPU frequencies less than 750MHz, | |
5675 | * just use the lowest ring freq. | |
5676 | */ | |
5677 | if (gpu_freq < min_freq) | |
5678 | ia_freq = 800; | |
5679 | else | |
5680 | ia_freq = max_ia_freq - ((diff * scaling_factor) / 2); | |
5681 | ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100); | |
5682 | } | |
2b4e57bd | 5683 | |
42c0526c BW |
5684 | sandybridge_pcode_write(dev_priv, |
5685 | GEN6_PCODE_WRITE_MIN_FREQ_TABLE, | |
3ebecd07 CW |
5686 | ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT | |
5687 | ring_freq << GEN6_PCODE_FREQ_RING_RATIO_SHIFT | | |
5688 | gpu_freq); | |
2b4e57bd | 5689 | } |
2b4e57bd ED |
5690 | } |
5691 | ||
03af2045 | 5692 | static int cherryview_rps_max_freq(struct drm_i915_private *dev_priv) |
2b6b3a09 D |
5693 | { |
5694 | u32 val, rp0; | |
5695 | ||
5b5929cb | 5696 | val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE); |
2b6b3a09 | 5697 | |
43b67998 | 5698 | switch (INTEL_INFO(dev_priv)->sseu.eu_total) { |
5b5929cb JN |
5699 | case 8: |
5700 | /* (2 * 4) config */ | |
5701 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS4EU_FUSE_SHIFT); | |
5702 | break; | |
5703 | case 12: | |
5704 | /* (2 * 6) config */ | |
5705 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS6EU_FUSE_SHIFT); | |
5706 | break; | |
5707 | case 16: | |
5708 | /* (2 * 8) config */ | |
5709 | default: | |
5710 | /* Setting (2 * 8) Min RP0 for any other combination */ | |
5711 | rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS8EU_FUSE_SHIFT); | |
5712 | break; | |
095acd5f | 5713 | } |
5b5929cb JN |
5714 | |
5715 | rp0 = (rp0 & FB_GFX_FREQ_FUSE_MASK); | |
5716 | ||
2b6b3a09 D |
5717 | return rp0; |
5718 | } | |
5719 | ||
5720 | static int cherryview_rps_rpe_freq(struct drm_i915_private *dev_priv) | |
5721 | { | |
5722 | u32 val, rpe; | |
5723 | ||
5724 | val = vlv_punit_read(dev_priv, PUNIT_GPU_DUTYCYCLE_REG); | |
5725 | rpe = (val >> PUNIT_GPU_DUTYCYCLE_RPE_FREQ_SHIFT) & PUNIT_GPU_DUTYCYCLE_RPE_FREQ_MASK; | |
5726 | ||
5727 | return rpe; | |
5728 | } | |
5729 | ||
7707df4a D |
5730 | static int cherryview_rps_guar_freq(struct drm_i915_private *dev_priv) |
5731 | { | |
5732 | u32 val, rp1; | |
5733 | ||
5b5929cb JN |
5734 | val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE); |
5735 | rp1 = (val & FB_GFX_FREQ_FUSE_MASK); | |
5736 | ||
7707df4a D |
5737 | return rp1; |
5738 | } | |
5739 | ||
f8f2b001 D |
5740 | static int valleyview_rps_guar_freq(struct drm_i915_private *dev_priv) |
5741 | { | |
5742 | u32 val, rp1; | |
5743 | ||
5744 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE); | |
5745 | ||
5746 | rp1 = (val & FB_GFX_FGUARANTEED_FREQ_FUSE_MASK) >> FB_GFX_FGUARANTEED_FREQ_FUSE_SHIFT; | |
5747 | ||
5748 | return rp1; | |
5749 | } | |
5750 | ||
03af2045 | 5751 | static int valleyview_rps_max_freq(struct drm_i915_private *dev_priv) |
0a073b84 JB |
5752 | { |
5753 | u32 val, rp0; | |
5754 | ||
64936258 | 5755 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE); |
0a073b84 JB |
5756 | |
5757 | rp0 = (val & FB_GFX_MAX_FREQ_FUSE_MASK) >> FB_GFX_MAX_FREQ_FUSE_SHIFT; | |
5758 | /* Clamp to max */ | |
5759 | rp0 = min_t(u32, rp0, 0xea); | |
5760 | ||
5761 | return rp0; | |
5762 | } | |
5763 | ||
5764 | static int valleyview_rps_rpe_freq(struct drm_i915_private *dev_priv) | |
5765 | { | |
5766 | u32 val, rpe; | |
5767 | ||
64936258 | 5768 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_LO); |
0a073b84 | 5769 | rpe = (val & FB_FMAX_VMIN_FREQ_LO_MASK) >> FB_FMAX_VMIN_FREQ_LO_SHIFT; |
64936258 | 5770 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_HI); |
0a073b84 JB |
5771 | rpe |= (val & FB_FMAX_VMIN_FREQ_HI_MASK) << 5; |
5772 | ||
5773 | return rpe; | |
5774 | } | |
5775 | ||
03af2045 | 5776 | static int valleyview_rps_min_freq(struct drm_i915_private *dev_priv) |
0a073b84 | 5777 | { |
36146035 ID |
5778 | u32 val; |
5779 | ||
5780 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM) & 0xff; | |
5781 | /* | |
5782 | * According to the BYT Punit GPU turbo HAS 1.1.6.3 the minimum value | |
5783 | * for the minimum frequency in GPLL mode is 0xc1. Contrary to this on | |
5784 | * a BYT-M B0 the above register contains 0xbf. Moreover when setting | |
5785 | * a frequency Punit will not allow values below 0xc0. Clamp it 0xc0 | |
5786 | * to make sure it matches what Punit accepts. | |
5787 | */ | |
5788 | return max_t(u32, val, 0xc0); | |
0a073b84 JB |
5789 | } |
5790 | ||
ae48434c ID |
5791 | /* Check that the pctx buffer wasn't move under us. */ |
5792 | static void valleyview_check_pctx(struct drm_i915_private *dev_priv) | |
5793 | { | |
5794 | unsigned long pctx_addr = I915_READ(VLV_PCBR) & ~4095; | |
5795 | ||
5796 | WARN_ON(pctx_addr != dev_priv->mm.stolen_base + | |
5797 | dev_priv->vlv_pctx->stolen->start); | |
5798 | } | |
5799 | ||
38807746 D |
5800 | |
5801 | /* Check that the pcbr address is not empty. */ | |
5802 | static void cherryview_check_pctx(struct drm_i915_private *dev_priv) | |
5803 | { | |
5804 | unsigned long pctx_addr = I915_READ(VLV_PCBR) & ~4095; | |
5805 | ||
5806 | WARN_ON((pctx_addr >> VLV_PCBR_ADDR_SHIFT) == 0); | |
5807 | } | |
5808 | ||
dc97997a | 5809 | static void cherryview_setup_pctx(struct drm_i915_private *dev_priv) |
38807746 | 5810 | { |
62106b4f | 5811 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
72e96d64 | 5812 | unsigned long pctx_paddr, paddr; |
38807746 D |
5813 | u32 pcbr; |
5814 | int pctx_size = 32*1024; | |
5815 | ||
38807746 D |
5816 | pcbr = I915_READ(VLV_PCBR); |
5817 | if ((pcbr >> VLV_PCBR_ADDR_SHIFT) == 0) { | |
ce611ef8 | 5818 | DRM_DEBUG_DRIVER("BIOS didn't set up PCBR, fixing up\n"); |
38807746 | 5819 | paddr = (dev_priv->mm.stolen_base + |
62106b4f | 5820 | (ggtt->stolen_size - pctx_size)); |
38807746 D |
5821 | |
5822 | pctx_paddr = (paddr & (~4095)); | |
5823 | I915_WRITE(VLV_PCBR, pctx_paddr); | |
5824 | } | |
ce611ef8 VS |
5825 | |
5826 | DRM_DEBUG_DRIVER("PCBR: 0x%08x\n", I915_READ(VLV_PCBR)); | |
38807746 D |
5827 | } |
5828 | ||
dc97997a | 5829 | static void valleyview_setup_pctx(struct drm_i915_private *dev_priv) |
c9cddffc | 5830 | { |
c9cddffc JB |
5831 | struct drm_i915_gem_object *pctx; |
5832 | unsigned long pctx_paddr; | |
5833 | u32 pcbr; | |
5834 | int pctx_size = 24*1024; | |
5835 | ||
5836 | pcbr = I915_READ(VLV_PCBR); | |
5837 | if (pcbr) { | |
5838 | /* BIOS set it up already, grab the pre-alloc'd space */ | |
5839 | int pcbr_offset; | |
5840 | ||
5841 | pcbr_offset = (pcbr & (~4095)) - dev_priv->mm.stolen_base; | |
91c8a326 | 5842 | pctx = i915_gem_object_create_stolen_for_preallocated(&dev_priv->drm, |
c9cddffc | 5843 | pcbr_offset, |
190d6cd5 | 5844 | I915_GTT_OFFSET_NONE, |
c9cddffc JB |
5845 | pctx_size); |
5846 | goto out; | |
5847 | } | |
5848 | ||
ce611ef8 VS |
5849 | DRM_DEBUG_DRIVER("BIOS didn't set up PCBR, fixing up\n"); |
5850 | ||
c9cddffc JB |
5851 | /* |
5852 | * From the Gunit register HAS: | |
5853 | * The Gfx driver is expected to program this register and ensure | |
5854 | * proper allocation within Gfx stolen memory. For example, this | |
5855 | * register should be programmed such than the PCBR range does not | |
5856 | * overlap with other ranges, such as the frame buffer, protected | |
5857 | * memory, or any other relevant ranges. | |
5858 | */ | |
91c8a326 | 5859 | pctx = i915_gem_object_create_stolen(&dev_priv->drm, pctx_size); |
c9cddffc JB |
5860 | if (!pctx) { |
5861 | DRM_DEBUG("not enough stolen space for PCTX, disabling\n"); | |
ee504898 | 5862 | goto out; |
c9cddffc JB |
5863 | } |
5864 | ||
5865 | pctx_paddr = dev_priv->mm.stolen_base + pctx->stolen->start; | |
5866 | I915_WRITE(VLV_PCBR, pctx_paddr); | |
5867 | ||
5868 | out: | |
ce611ef8 | 5869 | DRM_DEBUG_DRIVER("PCBR: 0x%08x\n", I915_READ(VLV_PCBR)); |
c9cddffc JB |
5870 | dev_priv->vlv_pctx = pctx; |
5871 | } | |
5872 | ||
dc97997a | 5873 | static void valleyview_cleanup_pctx(struct drm_i915_private *dev_priv) |
ae48434c | 5874 | { |
ae48434c ID |
5875 | if (WARN_ON(!dev_priv->vlv_pctx)) |
5876 | return; | |
5877 | ||
34911fd3 | 5878 | i915_gem_object_put_unlocked(dev_priv->vlv_pctx); |
ae48434c ID |
5879 | dev_priv->vlv_pctx = NULL; |
5880 | } | |
5881 | ||
c30fec65 VS |
5882 | static void vlv_init_gpll_ref_freq(struct drm_i915_private *dev_priv) |
5883 | { | |
5884 | dev_priv->rps.gpll_ref_freq = | |
5885 | vlv_get_cck_clock(dev_priv, "GPLL ref", | |
5886 | CCK_GPLL_CLOCK_CONTROL, | |
5887 | dev_priv->czclk_freq); | |
5888 | ||
5889 | DRM_DEBUG_DRIVER("GPLL reference freq: %d kHz\n", | |
5890 | dev_priv->rps.gpll_ref_freq); | |
5891 | } | |
5892 | ||
dc97997a | 5893 | static void valleyview_init_gt_powersave(struct drm_i915_private *dev_priv) |
4e80519e | 5894 | { |
2bb25c17 | 5895 | u32 val; |
4e80519e | 5896 | |
dc97997a | 5897 | valleyview_setup_pctx(dev_priv); |
4e80519e | 5898 | |
c30fec65 VS |
5899 | vlv_init_gpll_ref_freq(dev_priv); |
5900 | ||
2bb25c17 VS |
5901 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
5902 | switch ((val >> 6) & 3) { | |
5903 | case 0: | |
5904 | case 1: | |
5905 | dev_priv->mem_freq = 800; | |
5906 | break; | |
5907 | case 2: | |
5908 | dev_priv->mem_freq = 1066; | |
5909 | break; | |
5910 | case 3: | |
5911 | dev_priv->mem_freq = 1333; | |
5912 | break; | |
5913 | } | |
80b83b62 | 5914 | DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", dev_priv->mem_freq); |
2bb25c17 | 5915 | |
4e80519e ID |
5916 | dev_priv->rps.max_freq = valleyview_rps_max_freq(dev_priv); |
5917 | dev_priv->rps.rp0_freq = dev_priv->rps.max_freq; | |
5918 | DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5919 | intel_gpu_freq(dev_priv, dev_priv->rps.max_freq), |
4e80519e ID |
5920 | dev_priv->rps.max_freq); |
5921 | ||
5922 | dev_priv->rps.efficient_freq = valleyview_rps_rpe_freq(dev_priv); | |
5923 | DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5924 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
4e80519e ID |
5925 | dev_priv->rps.efficient_freq); |
5926 | ||
f8f2b001 D |
5927 | dev_priv->rps.rp1_freq = valleyview_rps_guar_freq(dev_priv); |
5928 | DRM_DEBUG_DRIVER("RP1(Guar Freq) GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5929 | intel_gpu_freq(dev_priv, dev_priv->rps.rp1_freq), |
f8f2b001 D |
5930 | dev_priv->rps.rp1_freq); |
5931 | ||
4e80519e ID |
5932 | dev_priv->rps.min_freq = valleyview_rps_min_freq(dev_priv); |
5933 | DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5934 | intel_gpu_freq(dev_priv, dev_priv->rps.min_freq), |
4e80519e | 5935 | dev_priv->rps.min_freq); |
4e80519e ID |
5936 | } |
5937 | ||
dc97997a | 5938 | static void cherryview_init_gt_powersave(struct drm_i915_private *dev_priv) |
38807746 | 5939 | { |
2bb25c17 | 5940 | u32 val; |
2b6b3a09 | 5941 | |
dc97997a | 5942 | cherryview_setup_pctx(dev_priv); |
2b6b3a09 | 5943 | |
c30fec65 VS |
5944 | vlv_init_gpll_ref_freq(dev_priv); |
5945 | ||
a580516d | 5946 | mutex_lock(&dev_priv->sb_lock); |
c6e8f39d | 5947 | val = vlv_cck_read(dev_priv, CCK_FUSE_REG); |
a580516d | 5948 | mutex_unlock(&dev_priv->sb_lock); |
c6e8f39d | 5949 | |
2bb25c17 | 5950 | switch ((val >> 2) & 0x7) { |
2bb25c17 | 5951 | case 3: |
2bb25c17 VS |
5952 | dev_priv->mem_freq = 2000; |
5953 | break; | |
bfa7df01 | 5954 | default: |
2bb25c17 VS |
5955 | dev_priv->mem_freq = 1600; |
5956 | break; | |
5957 | } | |
80b83b62 | 5958 | DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", dev_priv->mem_freq); |
2bb25c17 | 5959 | |
2b6b3a09 D |
5960 | dev_priv->rps.max_freq = cherryview_rps_max_freq(dev_priv); |
5961 | dev_priv->rps.rp0_freq = dev_priv->rps.max_freq; | |
5962 | DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5963 | intel_gpu_freq(dev_priv, dev_priv->rps.max_freq), |
2b6b3a09 D |
5964 | dev_priv->rps.max_freq); |
5965 | ||
5966 | dev_priv->rps.efficient_freq = cherryview_rps_rpe_freq(dev_priv); | |
5967 | DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5968 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), |
2b6b3a09 D |
5969 | dev_priv->rps.efficient_freq); |
5970 | ||
7707df4a D |
5971 | dev_priv->rps.rp1_freq = cherryview_rps_guar_freq(dev_priv); |
5972 | DRM_DEBUG_DRIVER("RP1(Guar) GPU freq: %d MHz (%u)\n", | |
7c59a9c1 | 5973 | intel_gpu_freq(dev_priv, dev_priv->rps.rp1_freq), |
7707df4a D |
5974 | dev_priv->rps.rp1_freq); |
5975 | ||
5b7c91b7 D |
5976 | /* PUnit validated range is only [RPe, RP0] */ |
5977 | dev_priv->rps.min_freq = dev_priv->rps.efficient_freq; | |
2b6b3a09 | 5978 | DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", |
7c59a9c1 | 5979 | intel_gpu_freq(dev_priv, dev_priv->rps.min_freq), |
2b6b3a09 D |
5980 | dev_priv->rps.min_freq); |
5981 | ||
1c14762d VS |
5982 | WARN_ONCE((dev_priv->rps.max_freq | |
5983 | dev_priv->rps.efficient_freq | | |
5984 | dev_priv->rps.rp1_freq | | |
5985 | dev_priv->rps.min_freq) & 1, | |
5986 | "Odd GPU freq values\n"); | |
38807746 D |
5987 | } |
5988 | ||
dc97997a | 5989 | static void valleyview_cleanup_gt_powersave(struct drm_i915_private *dev_priv) |
4e80519e | 5990 | { |
dc97997a | 5991 | valleyview_cleanup_pctx(dev_priv); |
4e80519e ID |
5992 | } |
5993 | ||
dc97997a | 5994 | static void cherryview_enable_rps(struct drm_i915_private *dev_priv) |
38807746 | 5995 | { |
e2f80391 | 5996 | struct intel_engine_cs *engine; |
3b3f1650 | 5997 | enum intel_engine_id id; |
2b6b3a09 | 5998 | u32 gtfifodbg, val, rc6_mode = 0, pcbr; |
38807746 D |
5999 | |
6000 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
6001 | ||
297b32ec VS |
6002 | gtfifodbg = I915_READ(GTFIFODBG) & ~(GT_FIFO_SBDEDICATE_FREE_ENTRY_CHV | |
6003 | GT_FIFO_FREE_ENTRIES_CHV); | |
38807746 D |
6004 | if (gtfifodbg) { |
6005 | DRM_DEBUG_DRIVER("GT fifo had a previous error %x\n", | |
6006 | gtfifodbg); | |
6007 | I915_WRITE(GTFIFODBG, gtfifodbg); | |
6008 | } | |
6009 | ||
6010 | cherryview_check_pctx(dev_priv); | |
6011 | ||
6012 | /* 1a & 1b: Get forcewake during program sequence. Although the driver | |
6013 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
59bad947 | 6014 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
38807746 | 6015 | |
160614a2 VS |
6016 | /* Disable RC states. */ |
6017 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
6018 | ||
38807746 D |
6019 | /* 2a: Program RC6 thresholds.*/ |
6020 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16); | |
6021 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ | |
6022 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
6023 | ||
3b3f1650 | 6024 | for_each_engine(engine, dev_priv, id) |
e2f80391 | 6025 | I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10); |
38807746 D |
6026 | I915_WRITE(GEN6_RC_SLEEP, 0); |
6027 | ||
f4f71c7d D |
6028 | /* TO threshold set to 500 us ( 0x186 * 1.28 us) */ |
6029 | I915_WRITE(GEN6_RC6_THRESHOLD, 0x186); | |
38807746 D |
6030 | |
6031 | /* allows RC6 residency counter to work */ | |
6032 | I915_WRITE(VLV_COUNTER_CONTROL, | |
6033 | _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH | | |
6034 | VLV_MEDIA_RC6_COUNT_EN | | |
6035 | VLV_RENDER_RC6_COUNT_EN)); | |
6036 | ||
6037 | /* For now we assume BIOS is allocating and populating the PCBR */ | |
6038 | pcbr = I915_READ(VLV_PCBR); | |
6039 | ||
38807746 | 6040 | /* 3: Enable RC6 */ |
dc97997a CW |
6041 | if ((intel_enable_rc6() & INTEL_RC6_ENABLE) && |
6042 | (pcbr >> VLV_PCBR_ADDR_SHIFT)) | |
af5a75a3 | 6043 | rc6_mode = GEN7_RC_CTL_TO_MODE; |
38807746 D |
6044 | |
6045 | I915_WRITE(GEN6_RC_CONTROL, rc6_mode); | |
6046 | ||
2b6b3a09 | 6047 | /* 4 Program defaults and thresholds for RPS*/ |
3cbdb48f | 6048 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000); |
2b6b3a09 D |
6049 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); |
6050 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); | |
6051 | I915_WRITE(GEN6_RP_UP_EI, 66000); | |
6052 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); | |
6053 | ||
6054 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
6055 | ||
6056 | /* 5: Enable RPS */ | |
6057 | I915_WRITE(GEN6_RP_CONTROL, | |
6058 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
eb973a5e | 6059 | GEN6_RP_MEDIA_IS_GFX | |
2b6b3a09 D |
6060 | GEN6_RP_ENABLE | |
6061 | GEN6_RP_UP_BUSY_AVG | | |
6062 | GEN6_RP_DOWN_IDLE_AVG); | |
6063 | ||
3ef62342 D |
6064 | /* Setting Fixed Bias */ |
6065 | val = VLV_OVERRIDE_EN | | |
6066 | VLV_SOC_TDP_EN | | |
6067 | CHV_BIAS_CPU_50_SOC_50; | |
6068 | vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val); | |
6069 | ||
2b6b3a09 D |
6070 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
6071 | ||
8d40c3ae VS |
6072 | /* RPS code assumes GPLL is used */ |
6073 | WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n"); | |
6074 | ||
742f491d | 6075 | DRM_DEBUG_DRIVER("GPLL enabled? %s\n", yesno(val & GPLLENABLE)); |
2b6b3a09 D |
6076 | DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val); |
6077 | ||
3a45b05c | 6078 | reset_rps(dev_priv, valleyview_set_rps); |
2b6b3a09 | 6079 | |
59bad947 | 6080 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
38807746 D |
6081 | } |
6082 | ||
dc97997a | 6083 | static void valleyview_enable_rps(struct drm_i915_private *dev_priv) |
0a073b84 | 6084 | { |
e2f80391 | 6085 | struct intel_engine_cs *engine; |
3b3f1650 | 6086 | enum intel_engine_id id; |
2a5913a8 | 6087 | u32 gtfifodbg, val, rc6_mode = 0; |
0a073b84 JB |
6088 | |
6089 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
6090 | ||
ae48434c ID |
6091 | valleyview_check_pctx(dev_priv); |
6092 | ||
297b32ec VS |
6093 | gtfifodbg = I915_READ(GTFIFODBG); |
6094 | if (gtfifodbg) { | |
f7d85c1e JB |
6095 | DRM_DEBUG_DRIVER("GT fifo had a previous error %x\n", |
6096 | gtfifodbg); | |
0a073b84 JB |
6097 | I915_WRITE(GTFIFODBG, gtfifodbg); |
6098 | } | |
6099 | ||
c8d9a590 | 6100 | /* If VLV, Forcewake all wells, else re-direct to regular path */ |
59bad947 | 6101 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
0a073b84 | 6102 | |
160614a2 VS |
6103 | /* Disable RC states. */ |
6104 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
6105 | ||
cad725fe | 6106 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000); |
0a073b84 JB |
6107 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); |
6108 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); | |
6109 | I915_WRITE(GEN6_RP_UP_EI, 66000); | |
6110 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); | |
6111 | ||
6112 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
6113 | ||
6114 | I915_WRITE(GEN6_RP_CONTROL, | |
6115 | GEN6_RP_MEDIA_TURBO | | |
6116 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
6117 | GEN6_RP_MEDIA_IS_GFX | | |
6118 | GEN6_RP_ENABLE | | |
6119 | GEN6_RP_UP_BUSY_AVG | | |
6120 | GEN6_RP_DOWN_IDLE_CONT); | |
6121 | ||
6122 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 0x00280000); | |
6123 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
6124 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
6125 | ||
3b3f1650 | 6126 | for_each_engine(engine, dev_priv, id) |
e2f80391 | 6127 | I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10); |
0a073b84 | 6128 | |
2f0aa304 | 6129 | I915_WRITE(GEN6_RC6_THRESHOLD, 0x557); |
0a073b84 JB |
6130 | |
6131 | /* allows RC6 residency counter to work */ | |
49798eb2 | 6132 | I915_WRITE(VLV_COUNTER_CONTROL, |
31685c25 D |
6133 | _MASKED_BIT_ENABLE(VLV_MEDIA_RC0_COUNT_EN | |
6134 | VLV_RENDER_RC0_COUNT_EN | | |
49798eb2 JB |
6135 | VLV_MEDIA_RC6_COUNT_EN | |
6136 | VLV_RENDER_RC6_COUNT_EN)); | |
31685c25 | 6137 | |
dc97997a | 6138 | if (intel_enable_rc6() & INTEL_RC6_ENABLE) |
6b88f295 | 6139 | rc6_mode = GEN7_RC_CTL_TO_MODE | VLV_RC_CTL_CTX_RST_PARALLEL; |
dc39fff7 | 6140 | |
dc97997a | 6141 | intel_print_rc6_info(dev_priv, rc6_mode); |
dc39fff7 | 6142 | |
a2b23fe0 | 6143 | I915_WRITE(GEN6_RC_CONTROL, rc6_mode); |
0a073b84 | 6144 | |
3ef62342 D |
6145 | /* Setting Fixed Bias */ |
6146 | val = VLV_OVERRIDE_EN | | |
6147 | VLV_SOC_TDP_EN | | |
6148 | VLV_BIAS_CPU_125_SOC_875; | |
6149 | vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val); | |
6150 | ||
64936258 | 6151 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
0a073b84 | 6152 | |
8d40c3ae VS |
6153 | /* RPS code assumes GPLL is used */ |
6154 | WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n"); | |
6155 | ||
742f491d | 6156 | DRM_DEBUG_DRIVER("GPLL enabled? %s\n", yesno(val & GPLLENABLE)); |
0a073b84 JB |
6157 | DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val); |
6158 | ||
3a45b05c | 6159 | reset_rps(dev_priv, valleyview_set_rps); |
0a073b84 | 6160 | |
59bad947 | 6161 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
0a073b84 JB |
6162 | } |
6163 | ||
dde18883 ED |
6164 | static unsigned long intel_pxfreq(u32 vidfreq) |
6165 | { | |
6166 | unsigned long freq; | |
6167 | int div = (vidfreq & 0x3f0000) >> 16; | |
6168 | int post = (vidfreq & 0x3000) >> 12; | |
6169 | int pre = (vidfreq & 0x7); | |
6170 | ||
6171 | if (!pre) | |
6172 | return 0; | |
6173 | ||
6174 | freq = ((div * 133333) / ((1<<post) * pre)); | |
6175 | ||
6176 | return freq; | |
6177 | } | |
6178 | ||
eb48eb00 DV |
6179 | static const struct cparams { |
6180 | u16 i; | |
6181 | u16 t; | |
6182 | u16 m; | |
6183 | u16 c; | |
6184 | } cparams[] = { | |
6185 | { 1, 1333, 301, 28664 }, | |
6186 | { 1, 1066, 294, 24460 }, | |
6187 | { 1, 800, 294, 25192 }, | |
6188 | { 0, 1333, 276, 27605 }, | |
6189 | { 0, 1066, 276, 27605 }, | |
6190 | { 0, 800, 231, 23784 }, | |
6191 | }; | |
6192 | ||
f531dcb2 | 6193 | static unsigned long __i915_chipset_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
6194 | { |
6195 | u64 total_count, diff, ret; | |
6196 | u32 count1, count2, count3, m = 0, c = 0; | |
6197 | unsigned long now = jiffies_to_msecs(jiffies), diff1; | |
6198 | int i; | |
6199 | ||
02d71956 DV |
6200 | assert_spin_locked(&mchdev_lock); |
6201 | ||
20e4d407 | 6202 | diff1 = now - dev_priv->ips.last_time1; |
eb48eb00 DV |
6203 | |
6204 | /* Prevent division-by-zero if we are asking too fast. | |
6205 | * Also, we don't get interesting results if we are polling | |
6206 | * faster than once in 10ms, so just return the saved value | |
6207 | * in such cases. | |
6208 | */ | |
6209 | if (diff1 <= 10) | |
20e4d407 | 6210 | return dev_priv->ips.chipset_power; |
eb48eb00 DV |
6211 | |
6212 | count1 = I915_READ(DMIEC); | |
6213 | count2 = I915_READ(DDREC); | |
6214 | count3 = I915_READ(CSIEC); | |
6215 | ||
6216 | total_count = count1 + count2 + count3; | |
6217 | ||
6218 | /* FIXME: handle per-counter overflow */ | |
20e4d407 DV |
6219 | if (total_count < dev_priv->ips.last_count1) { |
6220 | diff = ~0UL - dev_priv->ips.last_count1; | |
eb48eb00 DV |
6221 | diff += total_count; |
6222 | } else { | |
20e4d407 | 6223 | diff = total_count - dev_priv->ips.last_count1; |
eb48eb00 DV |
6224 | } |
6225 | ||
6226 | for (i = 0; i < ARRAY_SIZE(cparams); i++) { | |
20e4d407 DV |
6227 | if (cparams[i].i == dev_priv->ips.c_m && |
6228 | cparams[i].t == dev_priv->ips.r_t) { | |
eb48eb00 DV |
6229 | m = cparams[i].m; |
6230 | c = cparams[i].c; | |
6231 | break; | |
6232 | } | |
6233 | } | |
6234 | ||
6235 | diff = div_u64(diff, diff1); | |
6236 | ret = ((m * diff) + c); | |
6237 | ret = div_u64(ret, 10); | |
6238 | ||
20e4d407 DV |
6239 | dev_priv->ips.last_count1 = total_count; |
6240 | dev_priv->ips.last_time1 = now; | |
eb48eb00 | 6241 | |
20e4d407 | 6242 | dev_priv->ips.chipset_power = ret; |
eb48eb00 DV |
6243 | |
6244 | return ret; | |
6245 | } | |
6246 | ||
f531dcb2 CW |
6247 | unsigned long i915_chipset_val(struct drm_i915_private *dev_priv) |
6248 | { | |
6249 | unsigned long val; | |
6250 | ||
dc97997a | 6251 | if (INTEL_INFO(dev_priv)->gen != 5) |
f531dcb2 CW |
6252 | return 0; |
6253 | ||
6254 | spin_lock_irq(&mchdev_lock); | |
6255 | ||
6256 | val = __i915_chipset_val(dev_priv); | |
6257 | ||
6258 | spin_unlock_irq(&mchdev_lock); | |
6259 | ||
6260 | return val; | |
6261 | } | |
6262 | ||
eb48eb00 DV |
6263 | unsigned long i915_mch_val(struct drm_i915_private *dev_priv) |
6264 | { | |
6265 | unsigned long m, x, b; | |
6266 | u32 tsfs; | |
6267 | ||
6268 | tsfs = I915_READ(TSFS); | |
6269 | ||
6270 | m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT); | |
6271 | x = I915_READ8(TR1); | |
6272 | ||
6273 | b = tsfs & TSFS_INTR_MASK; | |
6274 | ||
6275 | return ((m * x) / 127) - b; | |
6276 | } | |
6277 | ||
d972d6ee MK |
6278 | static int _pxvid_to_vd(u8 pxvid) |
6279 | { | |
6280 | if (pxvid == 0) | |
6281 | return 0; | |
6282 | ||
6283 | if (pxvid >= 8 && pxvid < 31) | |
6284 | pxvid = 31; | |
6285 | ||
6286 | return (pxvid + 2) * 125; | |
6287 | } | |
6288 | ||
6289 | static u32 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid) | |
eb48eb00 | 6290 | { |
d972d6ee MK |
6291 | const int vd = _pxvid_to_vd(pxvid); |
6292 | const int vm = vd - 1125; | |
6293 | ||
dc97997a | 6294 | if (INTEL_INFO(dev_priv)->is_mobile) |
d972d6ee MK |
6295 | return vm > 0 ? vm : 0; |
6296 | ||
6297 | return vd; | |
eb48eb00 DV |
6298 | } |
6299 | ||
02d71956 | 6300 | static void __i915_update_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 | 6301 | { |
5ed0bdf2 | 6302 | u64 now, diff, diffms; |
eb48eb00 DV |
6303 | u32 count; |
6304 | ||
02d71956 | 6305 | assert_spin_locked(&mchdev_lock); |
eb48eb00 | 6306 | |
5ed0bdf2 TG |
6307 | now = ktime_get_raw_ns(); |
6308 | diffms = now - dev_priv->ips.last_time2; | |
6309 | do_div(diffms, NSEC_PER_MSEC); | |
eb48eb00 DV |
6310 | |
6311 | /* Don't divide by 0 */ | |
eb48eb00 DV |
6312 | if (!diffms) |
6313 | return; | |
6314 | ||
6315 | count = I915_READ(GFXEC); | |
6316 | ||
20e4d407 DV |
6317 | if (count < dev_priv->ips.last_count2) { |
6318 | diff = ~0UL - dev_priv->ips.last_count2; | |
eb48eb00 DV |
6319 | diff += count; |
6320 | } else { | |
20e4d407 | 6321 | diff = count - dev_priv->ips.last_count2; |
eb48eb00 DV |
6322 | } |
6323 | ||
20e4d407 DV |
6324 | dev_priv->ips.last_count2 = count; |
6325 | dev_priv->ips.last_time2 = now; | |
eb48eb00 DV |
6326 | |
6327 | /* More magic constants... */ | |
6328 | diff = diff * 1181; | |
6329 | diff = div_u64(diff, diffms * 10); | |
20e4d407 | 6330 | dev_priv->ips.gfx_power = diff; |
eb48eb00 DV |
6331 | } |
6332 | ||
02d71956 DV |
6333 | void i915_update_gfx_val(struct drm_i915_private *dev_priv) |
6334 | { | |
dc97997a | 6335 | if (INTEL_INFO(dev_priv)->gen != 5) |
02d71956 DV |
6336 | return; |
6337 | ||
9270388e | 6338 | spin_lock_irq(&mchdev_lock); |
02d71956 DV |
6339 | |
6340 | __i915_update_gfx_val(dev_priv); | |
6341 | ||
9270388e | 6342 | spin_unlock_irq(&mchdev_lock); |
02d71956 DV |
6343 | } |
6344 | ||
f531dcb2 | 6345 | static unsigned long __i915_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
6346 | { |
6347 | unsigned long t, corr, state1, corr2, state2; | |
6348 | u32 pxvid, ext_v; | |
6349 | ||
02d71956 DV |
6350 | assert_spin_locked(&mchdev_lock); |
6351 | ||
616847e7 | 6352 | pxvid = I915_READ(PXVFREQ(dev_priv->rps.cur_freq)); |
eb48eb00 DV |
6353 | pxvid = (pxvid >> 24) & 0x7f; |
6354 | ext_v = pvid_to_extvid(dev_priv, pxvid); | |
6355 | ||
6356 | state1 = ext_v; | |
6357 | ||
6358 | t = i915_mch_val(dev_priv); | |
6359 | ||
6360 | /* Revel in the empirically derived constants */ | |
6361 | ||
6362 | /* Correction factor in 1/100000 units */ | |
6363 | if (t > 80) | |
6364 | corr = ((t * 2349) + 135940); | |
6365 | else if (t >= 50) | |
6366 | corr = ((t * 964) + 29317); | |
6367 | else /* < 50 */ | |
6368 | corr = ((t * 301) + 1004); | |
6369 | ||
6370 | corr = corr * ((150142 * state1) / 10000 - 78642); | |
6371 | corr /= 100000; | |
20e4d407 | 6372 | corr2 = (corr * dev_priv->ips.corr); |
eb48eb00 DV |
6373 | |
6374 | state2 = (corr2 * state1) / 10000; | |
6375 | state2 /= 100; /* convert to mW */ | |
6376 | ||
02d71956 | 6377 | __i915_update_gfx_val(dev_priv); |
eb48eb00 | 6378 | |
20e4d407 | 6379 | return dev_priv->ips.gfx_power + state2; |
eb48eb00 DV |
6380 | } |
6381 | ||
f531dcb2 CW |
6382 | unsigned long i915_gfx_val(struct drm_i915_private *dev_priv) |
6383 | { | |
6384 | unsigned long val; | |
6385 | ||
dc97997a | 6386 | if (INTEL_INFO(dev_priv)->gen != 5) |
f531dcb2 CW |
6387 | return 0; |
6388 | ||
6389 | spin_lock_irq(&mchdev_lock); | |
6390 | ||
6391 | val = __i915_gfx_val(dev_priv); | |
6392 | ||
6393 | spin_unlock_irq(&mchdev_lock); | |
6394 | ||
6395 | return val; | |
6396 | } | |
6397 | ||
eb48eb00 DV |
6398 | /** |
6399 | * i915_read_mch_val - return value for IPS use | |
6400 | * | |
6401 | * Calculate and return a value for the IPS driver to use when deciding whether | |
6402 | * we have thermal and power headroom to increase CPU or GPU power budget. | |
6403 | */ | |
6404 | unsigned long i915_read_mch_val(void) | |
6405 | { | |
6406 | struct drm_i915_private *dev_priv; | |
6407 | unsigned long chipset_val, graphics_val, ret = 0; | |
6408 | ||
9270388e | 6409 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
6410 | if (!i915_mch_dev) |
6411 | goto out_unlock; | |
6412 | dev_priv = i915_mch_dev; | |
6413 | ||
f531dcb2 CW |
6414 | chipset_val = __i915_chipset_val(dev_priv); |
6415 | graphics_val = __i915_gfx_val(dev_priv); | |
eb48eb00 DV |
6416 | |
6417 | ret = chipset_val + graphics_val; | |
6418 | ||
6419 | out_unlock: | |
9270388e | 6420 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6421 | |
6422 | return ret; | |
6423 | } | |
6424 | EXPORT_SYMBOL_GPL(i915_read_mch_val); | |
6425 | ||
6426 | /** | |
6427 | * i915_gpu_raise - raise GPU frequency limit | |
6428 | * | |
6429 | * Raise the limit; IPS indicates we have thermal headroom. | |
6430 | */ | |
6431 | bool i915_gpu_raise(void) | |
6432 | { | |
6433 | struct drm_i915_private *dev_priv; | |
6434 | bool ret = true; | |
6435 | ||
9270388e | 6436 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
6437 | if (!i915_mch_dev) { |
6438 | ret = false; | |
6439 | goto out_unlock; | |
6440 | } | |
6441 | dev_priv = i915_mch_dev; | |
6442 | ||
20e4d407 DV |
6443 | if (dev_priv->ips.max_delay > dev_priv->ips.fmax) |
6444 | dev_priv->ips.max_delay--; | |
eb48eb00 DV |
6445 | |
6446 | out_unlock: | |
9270388e | 6447 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6448 | |
6449 | return ret; | |
6450 | } | |
6451 | EXPORT_SYMBOL_GPL(i915_gpu_raise); | |
6452 | ||
6453 | /** | |
6454 | * i915_gpu_lower - lower GPU frequency limit | |
6455 | * | |
6456 | * IPS indicates we're close to a thermal limit, so throttle back the GPU | |
6457 | * frequency maximum. | |
6458 | */ | |
6459 | bool i915_gpu_lower(void) | |
6460 | { | |
6461 | struct drm_i915_private *dev_priv; | |
6462 | bool ret = true; | |
6463 | ||
9270388e | 6464 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
6465 | if (!i915_mch_dev) { |
6466 | ret = false; | |
6467 | goto out_unlock; | |
6468 | } | |
6469 | dev_priv = i915_mch_dev; | |
6470 | ||
20e4d407 DV |
6471 | if (dev_priv->ips.max_delay < dev_priv->ips.min_delay) |
6472 | dev_priv->ips.max_delay++; | |
eb48eb00 DV |
6473 | |
6474 | out_unlock: | |
9270388e | 6475 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6476 | |
6477 | return ret; | |
6478 | } | |
6479 | EXPORT_SYMBOL_GPL(i915_gpu_lower); | |
6480 | ||
6481 | /** | |
6482 | * i915_gpu_busy - indicate GPU business to IPS | |
6483 | * | |
6484 | * Tell the IPS driver whether or not the GPU is busy. | |
6485 | */ | |
6486 | bool i915_gpu_busy(void) | |
6487 | { | |
eb48eb00 DV |
6488 | bool ret = false; |
6489 | ||
9270388e | 6490 | spin_lock_irq(&mchdev_lock); |
dcff85c8 CW |
6491 | if (i915_mch_dev) |
6492 | ret = i915_mch_dev->gt.awake; | |
9270388e | 6493 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6494 | |
6495 | return ret; | |
6496 | } | |
6497 | EXPORT_SYMBOL_GPL(i915_gpu_busy); | |
6498 | ||
6499 | /** | |
6500 | * i915_gpu_turbo_disable - disable graphics turbo | |
6501 | * | |
6502 | * Disable graphics turbo by resetting the max frequency and setting the | |
6503 | * current frequency to the default. | |
6504 | */ | |
6505 | bool i915_gpu_turbo_disable(void) | |
6506 | { | |
6507 | struct drm_i915_private *dev_priv; | |
6508 | bool ret = true; | |
6509 | ||
9270388e | 6510 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
6511 | if (!i915_mch_dev) { |
6512 | ret = false; | |
6513 | goto out_unlock; | |
6514 | } | |
6515 | dev_priv = i915_mch_dev; | |
6516 | ||
20e4d407 | 6517 | dev_priv->ips.max_delay = dev_priv->ips.fstart; |
eb48eb00 | 6518 | |
91d14251 | 6519 | if (!ironlake_set_drps(dev_priv, dev_priv->ips.fstart)) |
eb48eb00 DV |
6520 | ret = false; |
6521 | ||
6522 | out_unlock: | |
9270388e | 6523 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6524 | |
6525 | return ret; | |
6526 | } | |
6527 | EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable); | |
6528 | ||
6529 | /** | |
6530 | * Tells the intel_ips driver that the i915 driver is now loaded, if | |
6531 | * IPS got loaded first. | |
6532 | * | |
6533 | * This awkward dance is so that neither module has to depend on the | |
6534 | * other in order for IPS to do the appropriate communication of | |
6535 | * GPU turbo limits to i915. | |
6536 | */ | |
6537 | static void | |
6538 | ips_ping_for_i915_load(void) | |
6539 | { | |
6540 | void (*link)(void); | |
6541 | ||
6542 | link = symbol_get(ips_link_to_i915_driver); | |
6543 | if (link) { | |
6544 | link(); | |
6545 | symbol_put(ips_link_to_i915_driver); | |
6546 | } | |
6547 | } | |
6548 | ||
6549 | void intel_gpu_ips_init(struct drm_i915_private *dev_priv) | |
6550 | { | |
02d71956 DV |
6551 | /* We only register the i915 ips part with intel-ips once everything is |
6552 | * set up, to avoid intel-ips sneaking in and reading bogus values. */ | |
9270388e | 6553 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 6554 | i915_mch_dev = dev_priv; |
9270388e | 6555 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
6556 | |
6557 | ips_ping_for_i915_load(); | |
6558 | } | |
6559 | ||
6560 | void intel_gpu_ips_teardown(void) | |
6561 | { | |
9270388e | 6562 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 6563 | i915_mch_dev = NULL; |
9270388e | 6564 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 | 6565 | } |
76c3552f | 6566 | |
dc97997a | 6567 | static void intel_init_emon(struct drm_i915_private *dev_priv) |
dde18883 | 6568 | { |
dde18883 ED |
6569 | u32 lcfuse; |
6570 | u8 pxw[16]; | |
6571 | int i; | |
6572 | ||
6573 | /* Disable to program */ | |
6574 | I915_WRITE(ECR, 0); | |
6575 | POSTING_READ(ECR); | |
6576 | ||
6577 | /* Program energy weights for various events */ | |
6578 | I915_WRITE(SDEW, 0x15040d00); | |
6579 | I915_WRITE(CSIEW0, 0x007f0000); | |
6580 | I915_WRITE(CSIEW1, 0x1e220004); | |
6581 | I915_WRITE(CSIEW2, 0x04000004); | |
6582 | ||
6583 | for (i = 0; i < 5; i++) | |
616847e7 | 6584 | I915_WRITE(PEW(i), 0); |
dde18883 | 6585 | for (i = 0; i < 3; i++) |
616847e7 | 6586 | I915_WRITE(DEW(i), 0); |
dde18883 ED |
6587 | |
6588 | /* Program P-state weights to account for frequency power adjustment */ | |
6589 | for (i = 0; i < 16; i++) { | |
616847e7 | 6590 | u32 pxvidfreq = I915_READ(PXVFREQ(i)); |
dde18883 ED |
6591 | unsigned long freq = intel_pxfreq(pxvidfreq); |
6592 | unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >> | |
6593 | PXVFREQ_PX_SHIFT; | |
6594 | unsigned long val; | |
6595 | ||
6596 | val = vid * vid; | |
6597 | val *= (freq / 1000); | |
6598 | val *= 255; | |
6599 | val /= (127*127*900); | |
6600 | if (val > 0xff) | |
6601 | DRM_ERROR("bad pxval: %ld\n", val); | |
6602 | pxw[i] = val; | |
6603 | } | |
6604 | /* Render standby states get 0 weight */ | |
6605 | pxw[14] = 0; | |
6606 | pxw[15] = 0; | |
6607 | ||
6608 | for (i = 0; i < 4; i++) { | |
6609 | u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) | | |
6610 | (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]); | |
616847e7 | 6611 | I915_WRITE(PXW(i), val); |
dde18883 ED |
6612 | } |
6613 | ||
6614 | /* Adjust magic regs to magic values (more experimental results) */ | |
6615 | I915_WRITE(OGW0, 0); | |
6616 | I915_WRITE(OGW1, 0); | |
6617 | I915_WRITE(EG0, 0x00007f00); | |
6618 | I915_WRITE(EG1, 0x0000000e); | |
6619 | I915_WRITE(EG2, 0x000e0000); | |
6620 | I915_WRITE(EG3, 0x68000300); | |
6621 | I915_WRITE(EG4, 0x42000000); | |
6622 | I915_WRITE(EG5, 0x00140031); | |
6623 | I915_WRITE(EG6, 0); | |
6624 | I915_WRITE(EG7, 0); | |
6625 | ||
6626 | for (i = 0; i < 8; i++) | |
616847e7 | 6627 | I915_WRITE(PXWL(i), 0); |
dde18883 ED |
6628 | |
6629 | /* Enable PMON + select events */ | |
6630 | I915_WRITE(ECR, 0x80000019); | |
6631 | ||
6632 | lcfuse = I915_READ(LCFUSE02); | |
6633 | ||
20e4d407 | 6634 | dev_priv->ips.corr = (lcfuse & LCFUSE_HIV_MASK); |
dde18883 ED |
6635 | } |
6636 | ||
dc97997a | 6637 | void intel_init_gt_powersave(struct drm_i915_private *dev_priv) |
ae48434c | 6638 | { |
b268c699 ID |
6639 | /* |
6640 | * RPM depends on RC6 to save restore the GT HW context, so make RC6 a | |
6641 | * requirement. | |
6642 | */ | |
6643 | if (!i915.enable_rc6) { | |
6644 | DRM_INFO("RC6 disabled, disabling runtime PM support\n"); | |
6645 | intel_runtime_pm_get(dev_priv); | |
6646 | } | |
e6069ca8 | 6647 | |
b5163dbb | 6648 | mutex_lock(&dev_priv->drm.struct_mutex); |
773ea9a8 CW |
6649 | mutex_lock(&dev_priv->rps.hw_lock); |
6650 | ||
6651 | /* Initialize RPS limits (for userspace) */ | |
dc97997a CW |
6652 | if (IS_CHERRYVIEW(dev_priv)) |
6653 | cherryview_init_gt_powersave(dev_priv); | |
6654 | else if (IS_VALLEYVIEW(dev_priv)) | |
6655 | valleyview_init_gt_powersave(dev_priv); | |
2a13ae79 | 6656 | else if (INTEL_GEN(dev_priv) >= 6) |
773ea9a8 CW |
6657 | gen6_init_rps_frequencies(dev_priv); |
6658 | ||
6659 | /* Derive initial user preferences/limits from the hardware limits */ | |
6660 | dev_priv->rps.idle_freq = dev_priv->rps.min_freq; | |
6661 | dev_priv->rps.cur_freq = dev_priv->rps.idle_freq; | |
6662 | ||
6663 | dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; | |
6664 | dev_priv->rps.min_freq_softlimit = dev_priv->rps.min_freq; | |
6665 | ||
6666 | if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) | |
6667 | dev_priv->rps.min_freq_softlimit = | |
6668 | max_t(int, | |
6669 | dev_priv->rps.efficient_freq, | |
6670 | intel_freq_opcode(dev_priv, 450)); | |
6671 | ||
99ac9612 CW |
6672 | /* After setting max-softlimit, find the overclock max freq */ |
6673 | if (IS_GEN6(dev_priv) || | |
6674 | IS_IVYBRIDGE(dev_priv) || IS_HASWELL(dev_priv)) { | |
6675 | u32 params = 0; | |
6676 | ||
6677 | sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS, ¶ms); | |
6678 | if (params & BIT(31)) { /* OC supported */ | |
6679 | DRM_DEBUG_DRIVER("Overclocking supported, max: %dMHz, overclock: %dMHz\n", | |
6680 | (dev_priv->rps.max_freq & 0xff) * 50, | |
6681 | (params & 0xff) * 50); | |
6682 | dev_priv->rps.max_freq = params & 0xff; | |
6683 | } | |
6684 | } | |
6685 | ||
29ecd78d CW |
6686 | /* Finally allow us to boost to max by default */ |
6687 | dev_priv->rps.boost_freq = dev_priv->rps.max_freq; | |
6688 | ||
773ea9a8 | 6689 | mutex_unlock(&dev_priv->rps.hw_lock); |
b5163dbb | 6690 | mutex_unlock(&dev_priv->drm.struct_mutex); |
54b4f68f CW |
6691 | |
6692 | intel_autoenable_gt_powersave(dev_priv); | |
ae48434c ID |
6693 | } |
6694 | ||
dc97997a | 6695 | void intel_cleanup_gt_powersave(struct drm_i915_private *dev_priv) |
ae48434c | 6696 | { |
8dac1e1f | 6697 | if (IS_VALLEYVIEW(dev_priv)) |
dc97997a | 6698 | valleyview_cleanup_gt_powersave(dev_priv); |
b268c699 ID |
6699 | |
6700 | if (!i915.enable_rc6) | |
6701 | intel_runtime_pm_put(dev_priv); | |
ae48434c ID |
6702 | } |
6703 | ||
54b4f68f CW |
6704 | /** |
6705 | * intel_suspend_gt_powersave - suspend PM work and helper threads | |
6706 | * @dev_priv: i915 device | |
6707 | * | |
6708 | * We don't want to disable RC6 or other features here, we just want | |
6709 | * to make sure any work we've queued has finished and won't bother | |
6710 | * us while we're suspended. | |
6711 | */ | |
6712 | void intel_suspend_gt_powersave(struct drm_i915_private *dev_priv) | |
6713 | { | |
6714 | if (INTEL_GEN(dev_priv) < 6) | |
6715 | return; | |
6716 | ||
6717 | if (cancel_delayed_work_sync(&dev_priv->rps.autoenable_work)) | |
6718 | intel_runtime_pm_put(dev_priv); | |
6719 | ||
6720 | /* gen6_rps_idle() will be called later to disable interrupts */ | |
6721 | } | |
6722 | ||
b7137e0c CW |
6723 | void intel_sanitize_gt_powersave(struct drm_i915_private *dev_priv) |
6724 | { | |
6725 | dev_priv->rps.enabled = true; /* force disabling */ | |
6726 | intel_disable_gt_powersave(dev_priv); | |
54b4f68f CW |
6727 | |
6728 | gen6_reset_rps_interrupts(dev_priv); | |
156c7ca0 JB |
6729 | } |
6730 | ||
dc97997a | 6731 | void intel_disable_gt_powersave(struct drm_i915_private *dev_priv) |
8090c6b9 | 6732 | { |
b7137e0c CW |
6733 | if (!READ_ONCE(dev_priv->rps.enabled)) |
6734 | return; | |
e494837a | 6735 | |
b7137e0c | 6736 | mutex_lock(&dev_priv->rps.hw_lock); |
e534770a | 6737 | |
b7137e0c CW |
6738 | if (INTEL_GEN(dev_priv) >= 9) { |
6739 | gen9_disable_rc6(dev_priv); | |
6740 | gen9_disable_rps(dev_priv); | |
6741 | } else if (IS_CHERRYVIEW(dev_priv)) { | |
6742 | cherryview_disable_rps(dev_priv); | |
6743 | } else if (IS_VALLEYVIEW(dev_priv)) { | |
6744 | valleyview_disable_rps(dev_priv); | |
6745 | } else if (INTEL_GEN(dev_priv) >= 6) { | |
6746 | gen6_disable_rps(dev_priv); | |
6747 | } else if (IS_IRONLAKE_M(dev_priv)) { | |
6748 | ironlake_disable_drps(dev_priv); | |
930ebb46 | 6749 | } |
b7137e0c CW |
6750 | |
6751 | dev_priv->rps.enabled = false; | |
6752 | mutex_unlock(&dev_priv->rps.hw_lock); | |
8090c6b9 DV |
6753 | } |
6754 | ||
b7137e0c | 6755 | void intel_enable_gt_powersave(struct drm_i915_private *dev_priv) |
1a01ab3b | 6756 | { |
54b4f68f CW |
6757 | /* We shouldn't be disabling as we submit, so this should be less |
6758 | * racy than it appears! | |
6759 | */ | |
b7137e0c CW |
6760 | if (READ_ONCE(dev_priv->rps.enabled)) |
6761 | return; | |
1a01ab3b | 6762 | |
b7137e0c CW |
6763 | /* Powersaving is controlled by the host when inside a VM */ |
6764 | if (intel_vgpu_active(dev_priv)) | |
6765 | return; | |
0a073b84 | 6766 | |
b7137e0c | 6767 | mutex_lock(&dev_priv->rps.hw_lock); |
dc97997a CW |
6768 | |
6769 | if (IS_CHERRYVIEW(dev_priv)) { | |
6770 | cherryview_enable_rps(dev_priv); | |
6771 | } else if (IS_VALLEYVIEW(dev_priv)) { | |
6772 | valleyview_enable_rps(dev_priv); | |
b7137e0c | 6773 | } else if (INTEL_GEN(dev_priv) >= 9) { |
dc97997a CW |
6774 | gen9_enable_rc6(dev_priv); |
6775 | gen9_enable_rps(dev_priv); | |
6776 | if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) | |
fb7404e8 | 6777 | gen6_update_ring_freq(dev_priv); |
dc97997a CW |
6778 | } else if (IS_BROADWELL(dev_priv)) { |
6779 | gen8_enable_rps(dev_priv); | |
fb7404e8 | 6780 | gen6_update_ring_freq(dev_priv); |
b7137e0c | 6781 | } else if (INTEL_GEN(dev_priv) >= 6) { |
dc97997a | 6782 | gen6_enable_rps(dev_priv); |
fb7404e8 | 6783 | gen6_update_ring_freq(dev_priv); |
b7137e0c CW |
6784 | } else if (IS_IRONLAKE_M(dev_priv)) { |
6785 | ironlake_enable_drps(dev_priv); | |
6786 | intel_init_emon(dev_priv); | |
0a073b84 | 6787 | } |
aed242ff CW |
6788 | |
6789 | WARN_ON(dev_priv->rps.max_freq < dev_priv->rps.min_freq); | |
6790 | WARN_ON(dev_priv->rps.idle_freq > dev_priv->rps.max_freq); | |
6791 | ||
6792 | WARN_ON(dev_priv->rps.efficient_freq < dev_priv->rps.min_freq); | |
6793 | WARN_ON(dev_priv->rps.efficient_freq > dev_priv->rps.max_freq); | |
6794 | ||
54b4f68f | 6795 | dev_priv->rps.enabled = true; |
b7137e0c CW |
6796 | mutex_unlock(&dev_priv->rps.hw_lock); |
6797 | } | |
3cc134e3 | 6798 | |
54b4f68f CW |
6799 | static void __intel_autoenable_gt_powersave(struct work_struct *work) |
6800 | { | |
6801 | struct drm_i915_private *dev_priv = | |
6802 | container_of(work, typeof(*dev_priv), rps.autoenable_work.work); | |
6803 | struct intel_engine_cs *rcs; | |
6804 | struct drm_i915_gem_request *req; | |
6805 | ||
6806 | if (READ_ONCE(dev_priv->rps.enabled)) | |
6807 | goto out; | |
6808 | ||
3b3f1650 | 6809 | rcs = dev_priv->engine[RCS]; |
54b4f68f CW |
6810 | if (rcs->last_context) |
6811 | goto out; | |
6812 | ||
6813 | if (!rcs->init_context) | |
6814 | goto out; | |
6815 | ||
6816 | mutex_lock(&dev_priv->drm.struct_mutex); | |
6817 | ||
6818 | req = i915_gem_request_alloc(rcs, dev_priv->kernel_context); | |
6819 | if (IS_ERR(req)) | |
6820 | goto unlock; | |
6821 | ||
6822 | if (!i915.enable_execlists && i915_switch_context(req) == 0) | |
6823 | rcs->init_context(req); | |
6824 | ||
6825 | /* Mark the device busy, calling intel_enable_gt_powersave() */ | |
6826 | i915_add_request_no_flush(req); | |
6827 | ||
6828 | unlock: | |
6829 | mutex_unlock(&dev_priv->drm.struct_mutex); | |
6830 | out: | |
6831 | intel_runtime_pm_put(dev_priv); | |
6832 | } | |
6833 | ||
6834 | void intel_autoenable_gt_powersave(struct drm_i915_private *dev_priv) | |
6835 | { | |
6836 | if (READ_ONCE(dev_priv->rps.enabled)) | |
6837 | return; | |
6838 | ||
6839 | if (IS_IRONLAKE_M(dev_priv)) { | |
6840 | ironlake_enable_drps(dev_priv); | |
54b4f68f | 6841 | intel_init_emon(dev_priv); |
54b4f68f CW |
6842 | } else if (INTEL_INFO(dev_priv)->gen >= 6) { |
6843 | /* | |
6844 | * PCU communication is slow and this doesn't need to be | |
6845 | * done at any specific time, so do this out of our fast path | |
6846 | * to make resume and init faster. | |
6847 | * | |
6848 | * We depend on the HW RC6 power context save/restore | |
6849 | * mechanism when entering D3 through runtime PM suspend. So | |
6850 | * disable RPM until RPS/RC6 is properly setup. We can only | |
6851 | * get here via the driver load/system resume/runtime resume | |
6852 | * paths, so the _noresume version is enough (and in case of | |
6853 | * runtime resume it's necessary). | |
6854 | */ | |
6855 | if (queue_delayed_work(dev_priv->wq, | |
6856 | &dev_priv->rps.autoenable_work, | |
6857 | round_jiffies_up_relative(HZ))) | |
6858 | intel_runtime_pm_get_noresume(dev_priv); | |
6859 | } | |
6860 | } | |
6861 | ||
3107bd48 DV |
6862 | static void ibx_init_clock_gating(struct drm_device *dev) |
6863 | { | |
fac5e23e | 6864 | struct drm_i915_private *dev_priv = to_i915(dev); |
3107bd48 DV |
6865 | |
6866 | /* | |
6867 | * On Ibex Peak and Cougar Point, we need to disable clock | |
6868 | * gating for the panel power sequencer or it will fail to | |
6869 | * start up when no ports are active. | |
6870 | */ | |
6871 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); | |
6872 | } | |
6873 | ||
0e088b8f VS |
6874 | static void g4x_disable_trickle_feed(struct drm_device *dev) |
6875 | { | |
fac5e23e | 6876 | struct drm_i915_private *dev_priv = to_i915(dev); |
b12ce1d8 | 6877 | enum pipe pipe; |
0e088b8f | 6878 | |
055e393f | 6879 | for_each_pipe(dev_priv, pipe) { |
0e088b8f VS |
6880 | I915_WRITE(DSPCNTR(pipe), |
6881 | I915_READ(DSPCNTR(pipe)) | | |
6882 | DISPPLANE_TRICKLE_FEED_DISABLE); | |
b12ce1d8 VS |
6883 | |
6884 | I915_WRITE(DSPSURF(pipe), I915_READ(DSPSURF(pipe))); | |
6885 | POSTING_READ(DSPSURF(pipe)); | |
0e088b8f VS |
6886 | } |
6887 | } | |
6888 | ||
017636cc VS |
6889 | static void ilk_init_lp_watermarks(struct drm_device *dev) |
6890 | { | |
fac5e23e | 6891 | struct drm_i915_private *dev_priv = to_i915(dev); |
017636cc VS |
6892 | |
6893 | I915_WRITE(WM3_LP_ILK, I915_READ(WM3_LP_ILK) & ~WM1_LP_SR_EN); | |
6894 | I915_WRITE(WM2_LP_ILK, I915_READ(WM2_LP_ILK) & ~WM1_LP_SR_EN); | |
6895 | I915_WRITE(WM1_LP_ILK, I915_READ(WM1_LP_ILK) & ~WM1_LP_SR_EN); | |
6896 | ||
6897 | /* | |
6898 | * Don't touch WM1S_LP_EN here. | |
6899 | * Doing so could cause underruns. | |
6900 | */ | |
6901 | } | |
6902 | ||
1fa61106 | 6903 | static void ironlake_init_clock_gating(struct drm_device *dev) |
6f1d69b0 | 6904 | { |
fac5e23e | 6905 | struct drm_i915_private *dev_priv = to_i915(dev); |
231e54f6 | 6906 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 6907 | |
f1e8fa56 DL |
6908 | /* |
6909 | * Required for FBC | |
6910 | * WaFbcDisableDpfcClockGating:ilk | |
6911 | */ | |
4d47e4f5 DL |
6912 | dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE | |
6913 | ILK_DPFCUNIT_CLOCK_GATE_DISABLE | | |
6914 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE; | |
6f1d69b0 ED |
6915 | |
6916 | I915_WRITE(PCH_3DCGDIS0, | |
6917 | MARIUNIT_CLOCK_GATE_DISABLE | | |
6918 | SVSMUNIT_CLOCK_GATE_DISABLE); | |
6919 | I915_WRITE(PCH_3DCGDIS1, | |
6920 | VFMUNIT_CLOCK_GATE_DISABLE); | |
6921 | ||
6f1d69b0 ED |
6922 | /* |
6923 | * According to the spec the following bits should be set in | |
6924 | * order to enable memory self-refresh | |
6925 | * The bit 22/21 of 0x42004 | |
6926 | * The bit 5 of 0x42020 | |
6927 | * The bit 15 of 0x45000 | |
6928 | */ | |
6929 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
6930 | (I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6931 | ILK_DPARB_GATE | ILK_VSDPFD_FULL)); | |
4d47e4f5 | 6932 | dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE; |
6f1d69b0 ED |
6933 | I915_WRITE(DISP_ARB_CTL, |
6934 | (I915_READ(DISP_ARB_CTL) | | |
6935 | DISP_FBC_WM_DIS)); | |
017636cc VS |
6936 | |
6937 | ilk_init_lp_watermarks(dev); | |
6f1d69b0 ED |
6938 | |
6939 | /* | |
6940 | * Based on the document from hardware guys the following bits | |
6941 | * should be set unconditionally in order to enable FBC. | |
6942 | * The bit 22 of 0x42000 | |
6943 | * The bit 22 of 0x42004 | |
6944 | * The bit 7,8,9 of 0x42020. | |
6945 | */ | |
6946 | if (IS_IRONLAKE_M(dev)) { | |
4bb35334 | 6947 | /* WaFbcAsynchFlipDisableFbcQueue:ilk */ |
6f1d69b0 ED |
6948 | I915_WRITE(ILK_DISPLAY_CHICKEN1, |
6949 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
6950 | ILK_FBCQ_DIS); | |
6951 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
6952 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6953 | ILK_DPARB_GATE); | |
6f1d69b0 ED |
6954 | } |
6955 | ||
4d47e4f5 DL |
6956 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
6957 | ||
6f1d69b0 ED |
6958 | I915_WRITE(ILK_DISPLAY_CHICKEN2, |
6959 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
6960 | ILK_ELPIN_409_SELECT); | |
6961 | I915_WRITE(_3D_CHICKEN2, | |
6962 | _3D_CHICKEN2_WM_READ_PIPELINED << 16 | | |
6963 | _3D_CHICKEN2_WM_READ_PIPELINED); | |
4358a374 | 6964 | |
ecdb4eb7 | 6965 | /* WaDisableRenderCachePipelinedFlush:ilk */ |
4358a374 DV |
6966 | I915_WRITE(CACHE_MODE_0, |
6967 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
3107bd48 | 6968 | |
4e04632e AG |
6969 | /* WaDisable_RenderCache_OperationalFlush:ilk */ |
6970 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6971 | ||
0e088b8f | 6972 | g4x_disable_trickle_feed(dev); |
bdad2b2f | 6973 | |
3107bd48 DV |
6974 | ibx_init_clock_gating(dev); |
6975 | } | |
6976 | ||
6977 | static void cpt_init_clock_gating(struct drm_device *dev) | |
6978 | { | |
fac5e23e | 6979 | struct drm_i915_private *dev_priv = to_i915(dev); |
3107bd48 | 6980 | int pipe; |
3f704fa2 | 6981 | uint32_t val; |
3107bd48 DV |
6982 | |
6983 | /* | |
6984 | * On Ibex Peak and Cougar Point, we need to disable clock | |
6985 | * gating for the panel power sequencer or it will fail to | |
6986 | * start up when no ports are active. | |
6987 | */ | |
cd664078 JB |
6988 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE | |
6989 | PCH_DPLUNIT_CLOCK_GATE_DISABLE | | |
6990 | PCH_CPUNIT_CLOCK_GATE_DISABLE); | |
3107bd48 DV |
6991 | I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) | |
6992 | DPLS_EDP_PPS_FIX_DIS); | |
335c07b7 TI |
6993 | /* The below fixes the weird display corruption, a few pixels shifted |
6994 | * downward, on (only) LVDS of some HP laptops with IVY. | |
6995 | */ | |
055e393f | 6996 | for_each_pipe(dev_priv, pipe) { |
dc4bd2d1 PZ |
6997 | val = I915_READ(TRANS_CHICKEN2(pipe)); |
6998 | val |= TRANS_CHICKEN2_TIMING_OVERRIDE; | |
6999 | val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED; | |
41aa3448 | 7000 | if (dev_priv->vbt.fdi_rx_polarity_inverted) |
3f704fa2 | 7001 | val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED; |
dc4bd2d1 PZ |
7002 | val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK; |
7003 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER; | |
7004 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH; | |
3f704fa2 PZ |
7005 | I915_WRITE(TRANS_CHICKEN2(pipe), val); |
7006 | } | |
3107bd48 | 7007 | /* WADP0ClockGatingDisable */ |
055e393f | 7008 | for_each_pipe(dev_priv, pipe) { |
3107bd48 DV |
7009 | I915_WRITE(TRANS_CHICKEN1(pipe), |
7010 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); | |
7011 | } | |
6f1d69b0 ED |
7012 | } |
7013 | ||
1d7aaa0c DV |
7014 | static void gen6_check_mch_setup(struct drm_device *dev) |
7015 | { | |
fac5e23e | 7016 | struct drm_i915_private *dev_priv = to_i915(dev); |
1d7aaa0c DV |
7017 | uint32_t tmp; |
7018 | ||
7019 | tmp = I915_READ(MCH_SSKPD); | |
df662a28 DV |
7020 | if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL) |
7021 | DRM_DEBUG_KMS("Wrong MCH_SSKPD value: 0x%08x This can cause underruns.\n", | |
7022 | tmp); | |
1d7aaa0c DV |
7023 | } |
7024 | ||
1fa61106 | 7025 | static void gen6_init_clock_gating(struct drm_device *dev) |
6f1d69b0 | 7026 | { |
fac5e23e | 7027 | struct drm_i915_private *dev_priv = to_i915(dev); |
231e54f6 | 7028 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 7029 | |
231e54f6 | 7030 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
6f1d69b0 ED |
7031 | |
7032 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
7033 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
7034 | ILK_ELPIN_409_SELECT); | |
7035 | ||
ecdb4eb7 | 7036 | /* WaDisableHiZPlanesWhenMSAAEnabled:snb */ |
4283908e DV |
7037 | I915_WRITE(_3D_CHICKEN, |
7038 | _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB)); | |
7039 | ||
4e04632e AG |
7040 | /* WaDisable_RenderCache_OperationalFlush:snb */ |
7041 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
7042 | ||
8d85d272 VS |
7043 | /* |
7044 | * BSpec recoomends 8x4 when MSAA is used, | |
7045 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
7046 | * |
7047 | * Note that PS/WM thread counts depend on the WIZ hashing | |
7048 | * disable bit, which we don't touch here, but it's good | |
7049 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
8d85d272 VS |
7050 | */ |
7051 | I915_WRITE(GEN6_GT_MODE, | |
98533251 | 7052 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
8d85d272 | 7053 | |
017636cc | 7054 | ilk_init_lp_watermarks(dev); |
6f1d69b0 | 7055 | |
6f1d69b0 | 7056 | I915_WRITE(CACHE_MODE_0, |
50743298 | 7057 | _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB)); |
6f1d69b0 ED |
7058 | |
7059 | I915_WRITE(GEN6_UCGCTL1, | |
7060 | I915_READ(GEN6_UCGCTL1) | | |
7061 | GEN6_BLBUNIT_CLOCK_GATE_DISABLE | | |
7062 | GEN6_CSUNIT_CLOCK_GATE_DISABLE); | |
7063 | ||
7064 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock | |
7065 | * gating disable must be set. Failure to set it results in | |
7066 | * flickering pixels due to Z write ordering failures after | |
7067 | * some amount of runtime in the Mesa "fire" demo, and Unigine | |
7068 | * Sanctuary and Tropics, and apparently anything else with | |
7069 | * alpha test or pixel discard. | |
7070 | * | |
7071 | * According to the spec, bit 11 (RCCUNIT) must also be set, | |
7072 | * but we didn't debug actual testcases to find it out. | |
0f846f81 | 7073 | * |
ef59318c VS |
7074 | * WaDisableRCCUnitClockGating:snb |
7075 | * WaDisableRCPBUnitClockGating:snb | |
6f1d69b0 ED |
7076 | */ |
7077 | I915_WRITE(GEN6_UCGCTL2, | |
7078 | GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | | |
7079 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); | |
7080 | ||
5eb146dd | 7081 | /* WaStripsFansDisableFastClipPerformanceFix:snb */ |
743b57d8 VS |
7082 | I915_WRITE(_3D_CHICKEN3, |
7083 | _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL)); | |
6f1d69b0 | 7084 | |
e927ecde VS |
7085 | /* |
7086 | * Bspec says: | |
7087 | * "This bit must be set if 3DSTATE_CLIP clip mode is set to normal and | |
7088 | * 3DSTATE_SF number of SF output attributes is more than 16." | |
7089 | */ | |
7090 | I915_WRITE(_3D_CHICKEN3, | |
7091 | _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_PIPELINED_ATTR_FETCH)); | |
7092 | ||
6f1d69b0 ED |
7093 | /* |
7094 | * According to the spec the following bits should be | |
7095 | * set in order to enable memory self-refresh and fbc: | |
7096 | * The bit21 and bit22 of 0x42000 | |
7097 | * The bit21 and bit22 of 0x42004 | |
7098 | * The bit5 and bit7 of 0x42020 | |
7099 | * The bit14 of 0x70180 | |
7100 | * The bit14 of 0x71180 | |
4bb35334 DL |
7101 | * |
7102 | * WaFbcAsynchFlipDisableFbcQueue:snb | |
6f1d69b0 ED |
7103 | */ |
7104 | I915_WRITE(ILK_DISPLAY_CHICKEN1, | |
7105 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
7106 | ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS); | |
7107 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
7108 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
7109 | ILK_DPARB_GATE | ILK_VSDPFD_FULL); | |
231e54f6 DL |
7110 | I915_WRITE(ILK_DSPCLK_GATE_D, |
7111 | I915_READ(ILK_DSPCLK_GATE_D) | | |
7112 | ILK_DPARBUNIT_CLOCK_GATE_ENABLE | | |
7113 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE); | |
6f1d69b0 | 7114 | |
0e088b8f | 7115 | g4x_disable_trickle_feed(dev); |
f8f2ac9a | 7116 | |
3107bd48 | 7117 | cpt_init_clock_gating(dev); |
1d7aaa0c DV |
7118 | |
7119 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
7120 | } |
7121 | ||
7122 | static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv) | |
7123 | { | |
7124 | uint32_t reg = I915_READ(GEN7_FF_THREAD_MODE); | |
7125 | ||
3aad9059 | 7126 | /* |
46680e0a | 7127 | * WaVSThreadDispatchOverride:ivb,vlv |
3aad9059 VS |
7128 | * |
7129 | * This actually overrides the dispatch | |
7130 | * mode for all thread types. | |
7131 | */ | |
6f1d69b0 ED |
7132 | reg &= ~GEN7_FF_SCHED_MASK; |
7133 | reg |= GEN7_FF_TS_SCHED_HW; | |
7134 | reg |= GEN7_FF_VS_SCHED_HW; | |
7135 | reg |= GEN7_FF_DS_SCHED_HW; | |
7136 | ||
7137 | I915_WRITE(GEN7_FF_THREAD_MODE, reg); | |
7138 | } | |
7139 | ||
17a303ec PZ |
7140 | static void lpt_init_clock_gating(struct drm_device *dev) |
7141 | { | |
fac5e23e | 7142 | struct drm_i915_private *dev_priv = to_i915(dev); |
17a303ec PZ |
7143 | |
7144 | /* | |
7145 | * TODO: this bit should only be enabled when really needed, then | |
7146 | * disabled when not needed anymore in order to save power. | |
7147 | */ | |
c2699524 | 7148 | if (HAS_PCH_LPT_LP(dev)) |
17a303ec PZ |
7149 | I915_WRITE(SOUTH_DSPCLK_GATE_D, |
7150 | I915_READ(SOUTH_DSPCLK_GATE_D) | | |
7151 | PCH_LP_PARTITION_LEVEL_DISABLE); | |
0a790cdb PZ |
7152 | |
7153 | /* WADPOClockGatingDisable:hsw */ | |
36c0d0cf VS |
7154 | I915_WRITE(TRANS_CHICKEN1(PIPE_A), |
7155 | I915_READ(TRANS_CHICKEN1(PIPE_A)) | | |
0a790cdb | 7156 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); |
17a303ec PZ |
7157 | } |
7158 | ||
7d708ee4 ID |
7159 | static void lpt_suspend_hw(struct drm_device *dev) |
7160 | { | |
fac5e23e | 7161 | struct drm_i915_private *dev_priv = to_i915(dev); |
7d708ee4 | 7162 | |
c2699524 | 7163 | if (HAS_PCH_LPT_LP(dev)) { |
7d708ee4 ID |
7164 | uint32_t val = I915_READ(SOUTH_DSPCLK_GATE_D); |
7165 | ||
7166 | val &= ~PCH_LP_PARTITION_LEVEL_DISABLE; | |
7167 | I915_WRITE(SOUTH_DSPCLK_GATE_D, val); | |
7168 | } | |
7169 | } | |
7170 | ||
450174fe ID |
7171 | static void gen8_set_l3sqc_credits(struct drm_i915_private *dev_priv, |
7172 | int general_prio_credits, | |
7173 | int high_prio_credits) | |
7174 | { | |
7175 | u32 misccpctl; | |
7176 | ||
7177 | /* WaTempDisableDOPClkGating:bdw */ | |
7178 | misccpctl = I915_READ(GEN7_MISCCPCTL); | |
7179 | I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); | |
7180 | ||
7181 | I915_WRITE(GEN8_L3SQCREG1, | |
7182 | L3_GENERAL_PRIO_CREDITS(general_prio_credits) | | |
7183 | L3_HIGH_PRIO_CREDITS(high_prio_credits)); | |
7184 | ||
7185 | /* | |
7186 | * Wait at least 100 clocks before re-enabling clock gating. | |
7187 | * See the definition of L3SQCREG1 in BSpec. | |
7188 | */ | |
7189 | POSTING_READ(GEN8_L3SQCREG1); | |
7190 | udelay(1); | |
7191 | I915_WRITE(GEN7_MISCCPCTL, misccpctl); | |
7192 | } | |
7193 | ||
9498dba7 MK |
7194 | static void kabylake_init_clock_gating(struct drm_device *dev) |
7195 | { | |
9146f308 | 7196 | struct drm_i915_private *dev_priv = dev->dev_private; |
9498dba7 | 7197 | |
b033bb6d | 7198 | gen9_init_clock_gating(dev); |
9498dba7 MK |
7199 | |
7200 | /* WaDisableSDEUnitClockGating:kbl */ | |
7201 | if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0)) | |
7202 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
7203 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
8aeb7f62 MK |
7204 | |
7205 | /* WaDisableGamClockGating:kbl */ | |
7206 | if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0)) | |
7207 | I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) | | |
7208 | GEN6_GAMUNIT_CLOCK_GATE_DISABLE); | |
031cd8c8 MK |
7209 | |
7210 | /* WaFbcNukeOnHostModify:kbl */ | |
7211 | I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) | | |
7212 | ILK_DPFC_NUKE_ON_ANY_MODIFICATION); | |
9498dba7 MK |
7213 | } |
7214 | ||
dc00b6a0 DV |
7215 | static void skylake_init_clock_gating(struct drm_device *dev) |
7216 | { | |
c584e2d3 | 7217 | struct drm_i915_private *dev_priv = dev->dev_private; |
44fff99f | 7218 | |
b033bb6d | 7219 | gen9_init_clock_gating(dev); |
44fff99f MK |
7220 | |
7221 | /* WAC6entrylatency:skl */ | |
7222 | I915_WRITE(FBC_LLC_READ_CTRL, I915_READ(FBC_LLC_READ_CTRL) | | |
7223 | FBC_LLC_FULLY_OPEN); | |
031cd8c8 MK |
7224 | |
7225 | /* WaFbcNukeOnHostModify:skl */ | |
7226 | I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) | | |
7227 | ILK_DPFC_NUKE_ON_ANY_MODIFICATION); | |
dc00b6a0 DV |
7228 | } |
7229 | ||
47c2bd97 | 7230 | static void broadwell_init_clock_gating(struct drm_device *dev) |
1020a5c2 | 7231 | { |
fac5e23e | 7232 | struct drm_i915_private *dev_priv = to_i915(dev); |
07d27e20 | 7233 | enum pipe pipe; |
1020a5c2 | 7234 | |
7ad0dbab | 7235 | ilk_init_lp_watermarks(dev); |
50ed5fbd | 7236 | |
ab57fff1 | 7237 | /* WaSwitchSolVfFArbitrationPriority:bdw */ |
50ed5fbd | 7238 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); |
fe4ab3ce | 7239 | |
ab57fff1 | 7240 | /* WaPsrDPAMaskVBlankInSRD:bdw */ |
fe4ab3ce BW |
7241 | I915_WRITE(CHICKEN_PAR1_1, |
7242 | I915_READ(CHICKEN_PAR1_1) | DPA_MASK_VBLANK_SRD); | |
7243 | ||
ab57fff1 | 7244 | /* WaPsrDPRSUnmaskVBlankInSRD:bdw */ |
055e393f | 7245 | for_each_pipe(dev_priv, pipe) { |
07d27e20 | 7246 | I915_WRITE(CHICKEN_PIPESL_1(pipe), |
c7c65622 | 7247 | I915_READ(CHICKEN_PIPESL_1(pipe)) | |
8f670bb1 | 7248 | BDW_DPRS_MASK_VBLANK_SRD); |
fe4ab3ce | 7249 | } |
63801f21 | 7250 | |
ab57fff1 BW |
7251 | /* WaVSRefCountFullforceMissDisable:bdw */ |
7252 | /* WaDSRefCountFullforceMissDisable:bdw */ | |
7253 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
7254 | I915_READ(GEN7_FF_THREAD_MODE) & | |
7255 | ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME)); | |
36075a4c | 7256 | |
295e8bb7 VS |
7257 | I915_WRITE(GEN6_RC_SLEEP_PSMI_CONTROL, |
7258 | _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); | |
4f1ca9e9 VS |
7259 | |
7260 | /* WaDisableSDEUnitClockGating:bdw */ | |
7261 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
7262 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
5d708680 | 7263 | |
450174fe ID |
7264 | /* WaProgramL3SqcReg1Default:bdw */ |
7265 | gen8_set_l3sqc_credits(dev_priv, 30, 2); | |
4d487cff | 7266 | |
6d50b065 VS |
7267 | /* |
7268 | * WaGttCachingOffByDefault:bdw | |
7269 | * GTT cache may not work with big pages, so if those | |
7270 | * are ever enabled GTT cache may need to be disabled. | |
7271 | */ | |
7272 | I915_WRITE(HSW_GTT_CACHE_EN, GTT_CACHE_EN_ALL); | |
7273 | ||
17e0adf0 MK |
7274 | /* WaKVMNotificationOnConfigChange:bdw */ |
7275 | I915_WRITE(CHICKEN_PAR2_1, I915_READ(CHICKEN_PAR2_1) | |
7276 | | KVM_CONFIG_CHANGE_NOTIFICATION_SELECT); | |
7277 | ||
89d6b2b8 | 7278 | lpt_init_clock_gating(dev); |
1020a5c2 BW |
7279 | } |
7280 | ||
cad2a2d7 ED |
7281 | static void haswell_init_clock_gating(struct drm_device *dev) |
7282 | { | |
fac5e23e | 7283 | struct drm_i915_private *dev_priv = to_i915(dev); |
cad2a2d7 | 7284 | |
017636cc | 7285 | ilk_init_lp_watermarks(dev); |
cad2a2d7 | 7286 | |
f3fc4884 FJ |
7287 | /* L3 caching of data atomics doesn't work -- disable it. */ |
7288 | I915_WRITE(HSW_SCRATCH1, HSW_SCRATCH1_L3_DATA_ATOMICS_DISABLE); | |
7289 | I915_WRITE(HSW_ROW_CHICKEN3, | |
7290 | _MASKED_BIT_ENABLE(HSW_ROW_CHICKEN3_L3_GLOBAL_ATOMICS_DISABLE)); | |
7291 | ||
ecdb4eb7 | 7292 | /* This is required by WaCatErrorRejectionIssue:hsw */ |
cad2a2d7 ED |
7293 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
7294 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
7295 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
7296 | ||
e36ea7ff VS |
7297 | /* WaVSRefCountFullforceMissDisable:hsw */ |
7298 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
7299 | I915_READ(GEN7_FF_THREAD_MODE) & ~GEN7_FF_VS_REF_CNT_FFME); | |
cad2a2d7 | 7300 | |
4e04632e AG |
7301 | /* WaDisable_RenderCache_OperationalFlush:hsw */ |
7302 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
7303 | ||
fe27c606 CW |
7304 | /* enable HiZ Raw Stall Optimization */ |
7305 | I915_WRITE(CACHE_MODE_0_GEN7, | |
7306 | _MASKED_BIT_DISABLE(HIZ_RAW_STALL_OPT_DISABLE)); | |
7307 | ||
ecdb4eb7 | 7308 | /* WaDisable4x2SubspanOptimization:hsw */ |
cad2a2d7 ED |
7309 | I915_WRITE(CACHE_MODE_1, |
7310 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
1544d9d5 | 7311 | |
a12c4967 VS |
7312 | /* |
7313 | * BSpec recommends 8x4 when MSAA is used, | |
7314 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
7315 | * |
7316 | * Note that PS/WM thread counts depend on the WIZ hashing | |
7317 | * disable bit, which we don't touch here, but it's good | |
7318 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
a12c4967 VS |
7319 | */ |
7320 | I915_WRITE(GEN7_GT_MODE, | |
98533251 | 7321 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
a12c4967 | 7322 | |
94411593 KG |
7323 | /* WaSampleCChickenBitEnable:hsw */ |
7324 | I915_WRITE(HALF_SLICE_CHICKEN3, | |
7325 | _MASKED_BIT_ENABLE(HSW_SAMPLE_C_PERFORMANCE)); | |
7326 | ||
ecdb4eb7 | 7327 | /* WaSwitchSolVfFArbitrationPriority:hsw */ |
e3dff585 BW |
7328 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); |
7329 | ||
90a88643 PZ |
7330 | /* WaRsPkgCStateDisplayPMReq:hsw */ |
7331 | I915_WRITE(CHICKEN_PAR1_1, | |
7332 | I915_READ(CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES); | |
1544d9d5 | 7333 | |
17a303ec | 7334 | lpt_init_clock_gating(dev); |
cad2a2d7 ED |
7335 | } |
7336 | ||
1fa61106 | 7337 | static void ivybridge_init_clock_gating(struct drm_device *dev) |
6f1d69b0 | 7338 | { |
fac5e23e | 7339 | struct drm_i915_private *dev_priv = to_i915(dev); |
20848223 | 7340 | uint32_t snpcr; |
6f1d69b0 | 7341 | |
017636cc | 7342 | ilk_init_lp_watermarks(dev); |
6f1d69b0 | 7343 | |
231e54f6 | 7344 | I915_WRITE(ILK_DSPCLK_GATE_D, ILK_VRHUNIT_CLOCK_GATE_DISABLE); |
6f1d69b0 | 7345 | |
ecdb4eb7 | 7346 | /* WaDisableEarlyCull:ivb */ |
87f8020e JB |
7347 | I915_WRITE(_3D_CHICKEN3, |
7348 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
7349 | ||
ecdb4eb7 | 7350 | /* WaDisableBackToBackFlipFix:ivb */ |
6f1d69b0 ED |
7351 | I915_WRITE(IVB_CHICKEN3, |
7352 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
7353 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
7354 | ||
ecdb4eb7 | 7355 | /* WaDisablePSDDualDispatchEnable:ivb */ |
12f3382b JB |
7356 | if (IS_IVB_GT1(dev)) |
7357 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, | |
7358 | _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
12f3382b | 7359 | |
4e04632e AG |
7360 | /* WaDisable_RenderCache_OperationalFlush:ivb */ |
7361 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
7362 | ||
ecdb4eb7 | 7363 | /* Apply the WaDisableRHWOOptimizationForRenderHang:ivb workaround. */ |
6f1d69b0 ED |
7364 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
7365 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); | |
7366 | ||
ecdb4eb7 | 7367 | /* WaApplyL3ControlAndL3ChickenMode:ivb */ |
6f1d69b0 ED |
7368 | I915_WRITE(GEN7_L3CNTLREG1, |
7369 | GEN7_WA_FOR_GEN7_L3_CONTROL); | |
7370 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, | |
8ab43976 JB |
7371 | GEN7_WA_L3_CHICKEN_MODE); |
7372 | if (IS_IVB_GT1(dev)) | |
7373 | I915_WRITE(GEN7_ROW_CHICKEN2, | |
7374 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
412236c2 VS |
7375 | else { |
7376 | /* must write both registers */ | |
7377 | I915_WRITE(GEN7_ROW_CHICKEN2, | |
7378 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
8ab43976 JB |
7379 | I915_WRITE(GEN7_ROW_CHICKEN2_GT2, |
7380 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
412236c2 | 7381 | } |
6f1d69b0 | 7382 | |
ecdb4eb7 | 7383 | /* WaForceL3Serialization:ivb */ |
61939d97 JB |
7384 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
7385 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
7386 | ||
1b80a19a | 7387 | /* |
0f846f81 | 7388 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. |
ecdb4eb7 | 7389 | * This implements the WaDisableRCZUnitClockGating:ivb workaround. |
0f846f81 JB |
7390 | */ |
7391 | I915_WRITE(GEN6_UCGCTL2, | |
28acf3b2 | 7392 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE); |
0f846f81 | 7393 | |
ecdb4eb7 | 7394 | /* This is required by WaCatErrorRejectionIssue:ivb */ |
6f1d69b0 ED |
7395 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
7396 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
7397 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
7398 | ||
0e088b8f | 7399 | g4x_disable_trickle_feed(dev); |
6f1d69b0 ED |
7400 | |
7401 | gen7_setup_fixed_func_scheduler(dev_priv); | |
97e1930f | 7402 | |
22721343 CW |
7403 | if (0) { /* causes HiZ corruption on ivb:gt1 */ |
7404 | /* enable HiZ Raw Stall Optimization */ | |
7405 | I915_WRITE(CACHE_MODE_0_GEN7, | |
7406 | _MASKED_BIT_DISABLE(HIZ_RAW_STALL_OPT_DISABLE)); | |
7407 | } | |
116f2b6d | 7408 | |
ecdb4eb7 | 7409 | /* WaDisable4x2SubspanOptimization:ivb */ |
97e1930f DV |
7410 | I915_WRITE(CACHE_MODE_1, |
7411 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
20848223 | 7412 | |
a607c1a4 VS |
7413 | /* |
7414 | * BSpec recommends 8x4 when MSAA is used, | |
7415 | * however in practice 16x4 seems fastest. | |
c5c98a58 VS |
7416 | * |
7417 | * Note that PS/WM thread counts depend on the WIZ hashing | |
7418 | * disable bit, which we don't touch here, but it's good | |
7419 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
a607c1a4 VS |
7420 | */ |
7421 | I915_WRITE(GEN7_GT_MODE, | |
98533251 | 7422 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); |
a607c1a4 | 7423 | |
20848223 BW |
7424 | snpcr = I915_READ(GEN6_MBCUNIT_SNPCR); |
7425 | snpcr &= ~GEN6_MBC_SNPCR_MASK; | |
7426 | snpcr |= GEN6_MBC_SNPCR_MED; | |
7427 | I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr); | |
3107bd48 | 7428 | |
ab5c608b BW |
7429 | if (!HAS_PCH_NOP(dev)) |
7430 | cpt_init_clock_gating(dev); | |
1d7aaa0c DV |
7431 | |
7432 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
7433 | } |
7434 | ||
1fa61106 | 7435 | static void valleyview_init_clock_gating(struct drm_device *dev) |
6f1d69b0 | 7436 | { |
fac5e23e | 7437 | struct drm_i915_private *dev_priv = to_i915(dev); |
6f1d69b0 | 7438 | |
ecdb4eb7 | 7439 | /* WaDisableEarlyCull:vlv */ |
87f8020e JB |
7440 | I915_WRITE(_3D_CHICKEN3, |
7441 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
7442 | ||
ecdb4eb7 | 7443 | /* WaDisableBackToBackFlipFix:vlv */ |
6f1d69b0 ED |
7444 | I915_WRITE(IVB_CHICKEN3, |
7445 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
7446 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
7447 | ||
fad7d36e | 7448 | /* WaPsdDispatchEnable:vlv */ |
ecdb4eb7 | 7449 | /* WaDisablePSDDualDispatchEnable:vlv */ |
12f3382b | 7450 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, |
d3bc0303 JB |
7451 | _MASKED_BIT_ENABLE(GEN7_MAX_PS_THREAD_DEP | |
7452 | GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
12f3382b | 7453 | |
4e04632e AG |
7454 | /* WaDisable_RenderCache_OperationalFlush:vlv */ |
7455 | I915_WRITE(CACHE_MODE_0_GEN7, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
7456 | ||
ecdb4eb7 | 7457 | /* WaForceL3Serialization:vlv */ |
61939d97 JB |
7458 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
7459 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
7460 | ||
ecdb4eb7 | 7461 | /* WaDisableDopClockGating:vlv */ |
8ab43976 JB |
7462 | I915_WRITE(GEN7_ROW_CHICKEN2, |
7463 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
7464 | ||
ecdb4eb7 | 7465 | /* This is required by WaCatErrorRejectionIssue:vlv */ |
6f1d69b0 ED |
7466 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
7467 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
7468 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
7469 | ||
46680e0a VS |
7470 | gen7_setup_fixed_func_scheduler(dev_priv); |
7471 | ||
3c0edaeb | 7472 | /* |
0f846f81 | 7473 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. |
ecdb4eb7 | 7474 | * This implements the WaDisableRCZUnitClockGating:vlv workaround. |
0f846f81 JB |
7475 | */ |
7476 | I915_WRITE(GEN6_UCGCTL2, | |
3c0edaeb | 7477 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE); |
0f846f81 | 7478 | |
c98f5062 AG |
7479 | /* WaDisableL3Bank2xClockGate:vlv |
7480 | * Disabling L3 clock gating- MMIO 940c[25] = 1 | |
7481 | * Set bit 25, to disable L3_BANK_2x_CLK_GATING */ | |
7482 | I915_WRITE(GEN7_UCGCTL4, | |
7483 | I915_READ(GEN7_UCGCTL4) | GEN7_L3BANK2X_CLOCK_GATE_DISABLE); | |
e3f33d46 | 7484 | |
afd58e79 VS |
7485 | /* |
7486 | * BSpec says this must be set, even though | |
7487 | * WaDisable4x2SubspanOptimization isn't listed for VLV. | |
7488 | */ | |
6b26c86d DV |
7489 | I915_WRITE(CACHE_MODE_1, |
7490 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
7983117f | 7491 | |
da2518f9 VS |
7492 | /* |
7493 | * BSpec recommends 8x4 when MSAA is used, | |
7494 | * however in practice 16x4 seems fastest. | |
7495 | * | |
7496 | * Note that PS/WM thread counts depend on the WIZ hashing | |
7497 | * disable bit, which we don't touch here, but it's good | |
7498 | * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM). | |
7499 | */ | |
7500 | I915_WRITE(GEN7_GT_MODE, | |
7501 | _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4)); | |
7502 | ||
031994ee VS |
7503 | /* |
7504 | * WaIncreaseL3CreditsForVLVB0:vlv | |
7505 | * This is the hardware default actually. | |
7506 | */ | |
7507 | I915_WRITE(GEN7_L3SQCREG1, VLV_B0_WA_L3SQCREG1_VALUE); | |
7508 | ||
2d809570 | 7509 | /* |
ecdb4eb7 | 7510 | * WaDisableVLVClockGating_VBIIssue:vlv |
2d809570 JB |
7511 | * Disable clock gating on th GCFG unit to prevent a delay |
7512 | * in the reporting of vblank events. | |
7513 | */ | |
7a0d1eed | 7514 | I915_WRITE(VLV_GUNIT_CLOCK_GATE, GCFG_DIS); |
6f1d69b0 ED |
7515 | } |
7516 | ||
a4565da8 VS |
7517 | static void cherryview_init_clock_gating(struct drm_device *dev) |
7518 | { | |
fac5e23e | 7519 | struct drm_i915_private *dev_priv = to_i915(dev); |
a4565da8 | 7520 | |
232ce337 VS |
7521 | /* WaVSRefCountFullforceMissDisable:chv */ |
7522 | /* WaDSRefCountFullforceMissDisable:chv */ | |
7523 | I915_WRITE(GEN7_FF_THREAD_MODE, | |
7524 | I915_READ(GEN7_FF_THREAD_MODE) & | |
7525 | ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME)); | |
acea6f95 VS |
7526 | |
7527 | /* WaDisableSemaphoreAndSyncFlipWait:chv */ | |
7528 | I915_WRITE(GEN6_RC_SLEEP_PSMI_CONTROL, | |
7529 | _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); | |
0846697c VS |
7530 | |
7531 | /* WaDisableCSUnitClockGating:chv */ | |
7532 | I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) | | |
7533 | GEN6_CSUNIT_CLOCK_GATE_DISABLE); | |
c631780f VS |
7534 | |
7535 | /* WaDisableSDEUnitClockGating:chv */ | |
7536 | I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | | |
7537 | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); | |
6d50b065 | 7538 | |
450174fe ID |
7539 | /* |
7540 | * WaProgramL3SqcReg1Default:chv | |
7541 | * See gfxspecs/Related Documents/Performance Guide/ | |
7542 | * LSQC Setting Recommendations. | |
7543 | */ | |
7544 | gen8_set_l3sqc_credits(dev_priv, 38, 2); | |
7545 | ||
6d50b065 VS |
7546 | /* |
7547 | * GTT cache may not work with big pages, so if those | |
7548 | * are ever enabled GTT cache may need to be disabled. | |
7549 | */ | |
7550 | I915_WRITE(HSW_GTT_CACHE_EN, GTT_CACHE_EN_ALL); | |
a4565da8 VS |
7551 | } |
7552 | ||
1fa61106 | 7553 | static void g4x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 | 7554 | { |
fac5e23e | 7555 | struct drm_i915_private *dev_priv = to_i915(dev); |
6f1d69b0 ED |
7556 | uint32_t dspclk_gate; |
7557 | ||
7558 | I915_WRITE(RENCLK_GATE_D1, 0); | |
7559 | I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE | | |
7560 | GS_UNIT_CLOCK_GATE_DISABLE | | |
7561 | CL_UNIT_CLOCK_GATE_DISABLE); | |
7562 | I915_WRITE(RAMCLK_GATE_D, 0); | |
7563 | dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE | | |
7564 | OVRUNIT_CLOCK_GATE_DISABLE | | |
7565 | OVCUNIT_CLOCK_GATE_DISABLE; | |
7566 | if (IS_GM45(dev)) | |
7567 | dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE; | |
7568 | I915_WRITE(DSPCLK_GATE_D, dspclk_gate); | |
4358a374 DV |
7569 | |
7570 | /* WaDisableRenderCachePipelinedFlush */ | |
7571 | I915_WRITE(CACHE_MODE_0, | |
7572 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
de1aa629 | 7573 | |
4e04632e AG |
7574 | /* WaDisable_RenderCache_OperationalFlush:g4x */ |
7575 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
7576 | ||
0e088b8f | 7577 | g4x_disable_trickle_feed(dev); |
6f1d69b0 ED |
7578 | } |
7579 | ||
1fa61106 | 7580 | static void crestline_init_clock_gating(struct drm_device *dev) |
6f1d69b0 | 7581 | { |
fac5e23e | 7582 | struct drm_i915_private *dev_priv = to_i915(dev); |
6f1d69b0 ED |
7583 | |
7584 | I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE); | |
7585 | I915_WRITE(RENCLK_GATE_D2, 0); | |
7586 | I915_WRITE(DSPCLK_GATE_D, 0); | |
7587 | I915_WRITE(RAMCLK_GATE_D, 0); | |
7588 | I915_WRITE16(DEUC, 0); | |
20f94967 VS |
7589 | I915_WRITE(MI_ARB_STATE, |
7590 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
4e04632e AG |
7591 | |
7592 | /* WaDisable_RenderCache_OperationalFlush:gen4 */ | |
7593 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6f1d69b0 ED |
7594 | } |
7595 | ||
1fa61106 | 7596 | static void broadwater_init_clock_gating(struct drm_device *dev) |
6f1d69b0 | 7597 | { |
fac5e23e | 7598 | struct drm_i915_private *dev_priv = to_i915(dev); |
6f1d69b0 ED |
7599 | |
7600 | I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE | | |
7601 | I965_RCC_CLOCK_GATE_DISABLE | | |
7602 | I965_RCPB_CLOCK_GATE_DISABLE | | |
7603 | I965_ISC_CLOCK_GATE_DISABLE | | |
7604 | I965_FBC_CLOCK_GATE_DISABLE); | |
7605 | I915_WRITE(RENCLK_GATE_D2, 0); | |
20f94967 VS |
7606 | I915_WRITE(MI_ARB_STATE, |
7607 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
4e04632e AG |
7608 | |
7609 | /* WaDisable_RenderCache_OperationalFlush:gen4 */ | |
7610 | I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE)); | |
6f1d69b0 ED |
7611 | } |
7612 | ||
1fa61106 | 7613 | static void gen3_init_clock_gating(struct drm_device *dev) |
6f1d69b0 | 7614 | { |
fac5e23e | 7615 | struct drm_i915_private *dev_priv = to_i915(dev); |
6f1d69b0 ED |
7616 | u32 dstate = I915_READ(D_STATE); |
7617 | ||
7618 | dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING | | |
7619 | DSTATE_DOT_CLOCK_GATING; | |
7620 | I915_WRITE(D_STATE, dstate); | |
13a86b85 CW |
7621 | |
7622 | if (IS_PINEVIEW(dev)) | |
7623 | I915_WRITE(ECOSKPD, _MASKED_BIT_ENABLE(ECO_GATING_CX_ONLY)); | |
974a3b0f DV |
7624 | |
7625 | /* IIR "flip pending" means done if this bit is set */ | |
7626 | I915_WRITE(ECOSKPD, _MASKED_BIT_DISABLE(ECO_FLIP_DONE)); | |
12fabbcb VS |
7627 | |
7628 | /* interrupts should cause a wake up from C3 */ | |
3299254f | 7629 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_INT_EN)); |
dbb42748 VS |
7630 | |
7631 | /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ | |
7632 | I915_WRITE(MI_ARB_STATE, _MASKED_BIT_ENABLE(MI_ARB_C3_LP_WRITE_ENABLE)); | |
1038392b VS |
7633 | |
7634 | I915_WRITE(MI_ARB_STATE, | |
7635 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
7636 | } |
7637 | ||
1fa61106 | 7638 | static void i85x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 | 7639 | { |
fac5e23e | 7640 | struct drm_i915_private *dev_priv = to_i915(dev); |
6f1d69b0 ED |
7641 | |
7642 | I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE); | |
54e472ae VS |
7643 | |
7644 | /* interrupts should cause a wake up from C3 */ | |
7645 | I915_WRITE(MI_STATE, _MASKED_BIT_ENABLE(MI_AGPBUSY_INT_EN) | | |
7646 | _MASKED_BIT_DISABLE(MI_AGPBUSY_830_MODE)); | |
1038392b VS |
7647 | |
7648 | I915_WRITE(MEM_MODE, | |
7649 | _MASKED_BIT_ENABLE(MEM_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
7650 | } |
7651 | ||
1fa61106 | 7652 | static void i830_init_clock_gating(struct drm_device *dev) |
6f1d69b0 | 7653 | { |
fac5e23e | 7654 | struct drm_i915_private *dev_priv = to_i915(dev); |
6f1d69b0 ED |
7655 | |
7656 | I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE); | |
1038392b VS |
7657 | |
7658 | I915_WRITE(MEM_MODE, | |
7659 | _MASKED_BIT_ENABLE(MEM_DISPLAY_A_TRICKLE_FEED_DISABLE) | | |
7660 | _MASKED_BIT_ENABLE(MEM_DISPLAY_B_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
7661 | } |
7662 | ||
6f1d69b0 ED |
7663 | void intel_init_clock_gating(struct drm_device *dev) |
7664 | { | |
fac5e23e | 7665 | struct drm_i915_private *dev_priv = to_i915(dev); |
6f1d69b0 | 7666 | |
bb400da9 | 7667 | dev_priv->display.init_clock_gating(dev); |
6f1d69b0 ED |
7668 | } |
7669 | ||
7d708ee4 ID |
7670 | void intel_suspend_hw(struct drm_device *dev) |
7671 | { | |
7672 | if (HAS_PCH_LPT(dev)) | |
7673 | lpt_suspend_hw(dev); | |
7674 | } | |
7675 | ||
bb400da9 ID |
7676 | static void nop_init_clock_gating(struct drm_device *dev) |
7677 | { | |
7678 | DRM_DEBUG_KMS("No clock gating settings or workarounds applied.\n"); | |
7679 | } | |
7680 | ||
7681 | /** | |
7682 | * intel_init_clock_gating_hooks - setup the clock gating hooks | |
7683 | * @dev_priv: device private | |
7684 | * | |
7685 | * Setup the hooks that configure which clocks of a given platform can be | |
7686 | * gated and also apply various GT and display specific workarounds for these | |
7687 | * platforms. Note that some GT specific workarounds are applied separately | |
7688 | * when GPU contexts or batchbuffers start their execution. | |
7689 | */ | |
7690 | void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv) | |
7691 | { | |
7692 | if (IS_SKYLAKE(dev_priv)) | |
dc00b6a0 | 7693 | dev_priv->display.init_clock_gating = skylake_init_clock_gating; |
bb400da9 | 7694 | else if (IS_KABYLAKE(dev_priv)) |
9498dba7 | 7695 | dev_priv->display.init_clock_gating = kabylake_init_clock_gating; |
bb400da9 ID |
7696 | else if (IS_BROXTON(dev_priv)) |
7697 | dev_priv->display.init_clock_gating = bxt_init_clock_gating; | |
7698 | else if (IS_BROADWELL(dev_priv)) | |
7699 | dev_priv->display.init_clock_gating = broadwell_init_clock_gating; | |
7700 | else if (IS_CHERRYVIEW(dev_priv)) | |
7701 | dev_priv->display.init_clock_gating = cherryview_init_clock_gating; | |
7702 | else if (IS_HASWELL(dev_priv)) | |
7703 | dev_priv->display.init_clock_gating = haswell_init_clock_gating; | |
7704 | else if (IS_IVYBRIDGE(dev_priv)) | |
7705 | dev_priv->display.init_clock_gating = ivybridge_init_clock_gating; | |
7706 | else if (IS_VALLEYVIEW(dev_priv)) | |
7707 | dev_priv->display.init_clock_gating = valleyview_init_clock_gating; | |
7708 | else if (IS_GEN6(dev_priv)) | |
7709 | dev_priv->display.init_clock_gating = gen6_init_clock_gating; | |
7710 | else if (IS_GEN5(dev_priv)) | |
7711 | dev_priv->display.init_clock_gating = ironlake_init_clock_gating; | |
7712 | else if (IS_G4X(dev_priv)) | |
7713 | dev_priv->display.init_clock_gating = g4x_init_clock_gating; | |
7714 | else if (IS_CRESTLINE(dev_priv)) | |
7715 | dev_priv->display.init_clock_gating = crestline_init_clock_gating; | |
7716 | else if (IS_BROADWATER(dev_priv)) | |
7717 | dev_priv->display.init_clock_gating = broadwater_init_clock_gating; | |
7718 | else if (IS_GEN3(dev_priv)) | |
7719 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; | |
7720 | else if (IS_I85X(dev_priv) || IS_I865G(dev_priv)) | |
7721 | dev_priv->display.init_clock_gating = i85x_init_clock_gating; | |
7722 | else if (IS_GEN2(dev_priv)) | |
7723 | dev_priv->display.init_clock_gating = i830_init_clock_gating; | |
7724 | else { | |
7725 | MISSING_CASE(INTEL_DEVID(dev_priv)); | |
7726 | dev_priv->display.init_clock_gating = nop_init_clock_gating; | |
7727 | } | |
7728 | } | |
7729 | ||
1fa61106 ED |
7730 | /* Set up chip specific power management-related functions */ |
7731 | void intel_init_pm(struct drm_device *dev) | |
7732 | { | |
fac5e23e | 7733 | struct drm_i915_private *dev_priv = to_i915(dev); |
1fa61106 | 7734 | |
7ff0ebcc | 7735 | intel_fbc_init(dev_priv); |
1fa61106 | 7736 | |
c921aba8 DV |
7737 | /* For cxsr */ |
7738 | if (IS_PINEVIEW(dev)) | |
7739 | i915_pineview_get_mem_freq(dev); | |
7740 | else if (IS_GEN5(dev)) | |
7741 | i915_ironlake_get_mem_freq(dev); | |
7742 | ||
1fa61106 | 7743 | /* For FIFO watermark updates */ |
f5ed50cb | 7744 | if (INTEL_INFO(dev)->gen >= 9) { |
2af30a5c | 7745 | skl_setup_wm_latency(dev); |
2d41c0b5 | 7746 | dev_priv->display.update_wm = skl_update_wm; |
98d39494 | 7747 | dev_priv->display.compute_global_watermarks = skl_compute_wm; |
c83155a6 | 7748 | } else if (HAS_PCH_SPLIT(dev)) { |
fa50ad61 | 7749 | ilk_setup_wm_latency(dev); |
53615a5e | 7750 | |
bd602544 VS |
7751 | if ((IS_GEN5(dev) && dev_priv->wm.pri_latency[1] && |
7752 | dev_priv->wm.spr_latency[1] && dev_priv->wm.cur_latency[1]) || | |
7753 | (!IS_GEN5(dev) && dev_priv->wm.pri_latency[0] && | |
7754 | dev_priv->wm.spr_latency[0] && dev_priv->wm.cur_latency[0])) { | |
86c8bbbe | 7755 | dev_priv->display.compute_pipe_wm = ilk_compute_pipe_wm; |
ed4a6a7c MR |
7756 | dev_priv->display.compute_intermediate_wm = |
7757 | ilk_compute_intermediate_wm; | |
7758 | dev_priv->display.initial_watermarks = | |
7759 | ilk_initial_watermarks; | |
7760 | dev_priv->display.optimize_watermarks = | |
7761 | ilk_optimize_watermarks; | |
bd602544 VS |
7762 | } else { |
7763 | DRM_DEBUG_KMS("Failed to read display plane latency. " | |
7764 | "Disable CxSR\n"); | |
7765 | } | |
a4565da8 | 7766 | } else if (IS_CHERRYVIEW(dev)) { |
262cd2e1 | 7767 | vlv_setup_wm_latency(dev); |
262cd2e1 | 7768 | dev_priv->display.update_wm = vlv_update_wm; |
1fa61106 | 7769 | } else if (IS_VALLEYVIEW(dev)) { |
26e1fe4f | 7770 | vlv_setup_wm_latency(dev); |
26e1fe4f | 7771 | dev_priv->display.update_wm = vlv_update_wm; |
1fa61106 ED |
7772 | } else if (IS_PINEVIEW(dev)) { |
7773 | if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev), | |
7774 | dev_priv->is_ddr3, | |
7775 | dev_priv->fsb_freq, | |
7776 | dev_priv->mem_freq)) { | |
7777 | DRM_INFO("failed to find known CxSR latency " | |
7778 | "(found ddr%s fsb freq %d, mem freq %d), " | |
7779 | "disabling CxSR\n", | |
7780 | (dev_priv->is_ddr3 == 1) ? "3" : "2", | |
7781 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
7782 | /* Disable CxSR and never update its watermark again */ | |
5209b1f4 | 7783 | intel_set_memory_cxsr(dev_priv, false); |
1fa61106 ED |
7784 | dev_priv->display.update_wm = NULL; |
7785 | } else | |
7786 | dev_priv->display.update_wm = pineview_update_wm; | |
1fa61106 ED |
7787 | } else if (IS_G4X(dev)) { |
7788 | dev_priv->display.update_wm = g4x_update_wm; | |
1fa61106 ED |
7789 | } else if (IS_GEN4(dev)) { |
7790 | dev_priv->display.update_wm = i965_update_wm; | |
1fa61106 ED |
7791 | } else if (IS_GEN3(dev)) { |
7792 | dev_priv->display.update_wm = i9xx_update_wm; | |
7793 | dev_priv->display.get_fifo_size = i9xx_get_fifo_size; | |
feb56b93 DV |
7794 | } else if (IS_GEN2(dev)) { |
7795 | if (INTEL_INFO(dev)->num_pipes == 1) { | |
7796 | dev_priv->display.update_wm = i845_update_wm; | |
1fa61106 | 7797 | dev_priv->display.get_fifo_size = i845_get_fifo_size; |
feb56b93 DV |
7798 | } else { |
7799 | dev_priv->display.update_wm = i9xx_update_wm; | |
1fa61106 | 7800 | dev_priv->display.get_fifo_size = i830_get_fifo_size; |
feb56b93 | 7801 | } |
feb56b93 DV |
7802 | } else { |
7803 | DRM_ERROR("unexpected fall-through in intel_init_pm\n"); | |
1fa61106 ED |
7804 | } |
7805 | } | |
7806 | ||
87660502 L |
7807 | static inline int gen6_check_mailbox_status(struct drm_i915_private *dev_priv) |
7808 | { | |
7809 | uint32_t flags = | |
7810 | I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_ERROR_MASK; | |
7811 | ||
7812 | switch (flags) { | |
7813 | case GEN6_PCODE_SUCCESS: | |
7814 | return 0; | |
7815 | case GEN6_PCODE_UNIMPLEMENTED_CMD: | |
7816 | case GEN6_PCODE_ILLEGAL_CMD: | |
7817 | return -ENXIO; | |
7818 | case GEN6_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE: | |
7850d1c3 | 7819 | case GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE: |
87660502 L |
7820 | return -EOVERFLOW; |
7821 | case GEN6_PCODE_TIMEOUT: | |
7822 | return -ETIMEDOUT; | |
7823 | default: | |
7824 | MISSING_CASE(flags) | |
7825 | return 0; | |
7826 | } | |
7827 | } | |
7828 | ||
7829 | static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv) | |
7830 | { | |
7831 | uint32_t flags = | |
7832 | I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_ERROR_MASK; | |
7833 | ||
7834 | switch (flags) { | |
7835 | case GEN6_PCODE_SUCCESS: | |
7836 | return 0; | |
7837 | case GEN6_PCODE_ILLEGAL_CMD: | |
7838 | return -ENXIO; | |
7839 | case GEN7_PCODE_TIMEOUT: | |
7840 | return -ETIMEDOUT; | |
7841 | case GEN7_PCODE_ILLEGAL_DATA: | |
7842 | return -EINVAL; | |
7843 | case GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE: | |
7844 | return -EOVERFLOW; | |
7845 | default: | |
7846 | MISSING_CASE(flags); | |
7847 | return 0; | |
7848 | } | |
7849 | } | |
7850 | ||
151a49d0 | 7851 | int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val) |
42c0526c | 7852 | { |
87660502 L |
7853 | int status; |
7854 | ||
4fc688ce | 7855 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c | 7856 | |
3f5582dd CW |
7857 | /* GEN6_PCODE_* are outside of the forcewake domain, we can |
7858 | * use te fw I915_READ variants to reduce the amount of work | |
7859 | * required when reading/writing. | |
7860 | */ | |
7861 | ||
7862 | if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
42c0526c BW |
7863 | DRM_DEBUG_DRIVER("warning: pcode (read) mailbox access failed\n"); |
7864 | return -EAGAIN; | |
7865 | } | |
7866 | ||
3f5582dd CW |
7867 | I915_WRITE_FW(GEN6_PCODE_DATA, *val); |
7868 | I915_WRITE_FW(GEN6_PCODE_DATA1, 0); | |
7869 | I915_WRITE_FW(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); | |
42c0526c | 7870 | |
3f5582dd CW |
7871 | if (intel_wait_for_register_fw(dev_priv, |
7872 | GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0, | |
7873 | 500)) { | |
42c0526c BW |
7874 | DRM_ERROR("timeout waiting for pcode read (%d) to finish\n", mbox); |
7875 | return -ETIMEDOUT; | |
7876 | } | |
7877 | ||
3f5582dd CW |
7878 | *val = I915_READ_FW(GEN6_PCODE_DATA); |
7879 | I915_WRITE_FW(GEN6_PCODE_DATA, 0); | |
42c0526c | 7880 | |
87660502 L |
7881 | if (INTEL_GEN(dev_priv) > 6) |
7882 | status = gen7_check_mailbox_status(dev_priv); | |
7883 | else | |
7884 | status = gen6_check_mailbox_status(dev_priv); | |
7885 | ||
7886 | if (status) { | |
7887 | DRM_DEBUG_DRIVER("warning: pcode (read) mailbox access failed: %d\n", | |
7888 | status); | |
7889 | return status; | |
7890 | } | |
7891 | ||
42c0526c BW |
7892 | return 0; |
7893 | } | |
7894 | ||
3f5582dd | 7895 | int sandybridge_pcode_write(struct drm_i915_private *dev_priv, |
87660502 | 7896 | u32 mbox, u32 val) |
42c0526c | 7897 | { |
87660502 L |
7898 | int status; |
7899 | ||
4fc688ce | 7900 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c | 7901 | |
3f5582dd CW |
7902 | /* GEN6_PCODE_* are outside of the forcewake domain, we can |
7903 | * use te fw I915_READ variants to reduce the amount of work | |
7904 | * required when reading/writing. | |
7905 | */ | |
7906 | ||
7907 | if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
42c0526c BW |
7908 | DRM_DEBUG_DRIVER("warning: pcode (write) mailbox access failed\n"); |
7909 | return -EAGAIN; | |
7910 | } | |
7911 | ||
3f5582dd CW |
7912 | I915_WRITE_FW(GEN6_PCODE_DATA, val); |
7913 | I915_WRITE_FW(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); | |
42c0526c | 7914 | |
3f5582dd CW |
7915 | if (intel_wait_for_register_fw(dev_priv, |
7916 | GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0, | |
7917 | 500)) { | |
42c0526c BW |
7918 | DRM_ERROR("timeout waiting for pcode write (%d) to finish\n", mbox); |
7919 | return -ETIMEDOUT; | |
7920 | } | |
7921 | ||
3f5582dd | 7922 | I915_WRITE_FW(GEN6_PCODE_DATA, 0); |
42c0526c | 7923 | |
87660502 L |
7924 | if (INTEL_GEN(dev_priv) > 6) |
7925 | status = gen7_check_mailbox_status(dev_priv); | |
7926 | else | |
7927 | status = gen6_check_mailbox_status(dev_priv); | |
7928 | ||
7929 | if (status) { | |
7930 | DRM_DEBUG_DRIVER("warning: pcode (write) mailbox access failed: %d\n", | |
7931 | status); | |
7932 | return status; | |
7933 | } | |
7934 | ||
42c0526c BW |
7935 | return 0; |
7936 | } | |
a0e4e199 | 7937 | |
dd06f88c VS |
7938 | static int byt_gpu_freq(struct drm_i915_private *dev_priv, int val) |
7939 | { | |
c30fec65 VS |
7940 | /* |
7941 | * N = val - 0xb7 | |
7942 | * Slow = Fast = GPLL ref * N | |
7943 | */ | |
7944 | return DIV_ROUND_CLOSEST(dev_priv->rps.gpll_ref_freq * (val - 0xb7), 1000); | |
855ba3be JB |
7945 | } |
7946 | ||
b55dd647 | 7947 | static int byt_freq_opcode(struct drm_i915_private *dev_priv, int val) |
855ba3be | 7948 | { |
c30fec65 | 7949 | return DIV_ROUND_CLOSEST(1000 * val, dev_priv->rps.gpll_ref_freq) + 0xb7; |
855ba3be JB |
7950 | } |
7951 | ||
b55dd647 | 7952 | static int chv_gpu_freq(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 7953 | { |
c30fec65 VS |
7954 | /* |
7955 | * N = val / 2 | |
7956 | * CU (slow) = CU2x (fast) / 2 = GPLL ref * N / 2 | |
7957 | */ | |
7958 | return DIV_ROUND_CLOSEST(dev_priv->rps.gpll_ref_freq * val, 2 * 2 * 1000); | |
22b1b2f8 D |
7959 | } |
7960 | ||
b55dd647 | 7961 | static int chv_freq_opcode(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 7962 | { |
1c14762d | 7963 | /* CHV needs even values */ |
c30fec65 | 7964 | return DIV_ROUND_CLOSEST(2 * 1000 * val, dev_priv->rps.gpll_ref_freq) * 2; |
22b1b2f8 D |
7965 | } |
7966 | ||
616bc820 | 7967 | int intel_gpu_freq(struct drm_i915_private *dev_priv, int val) |
22b1b2f8 | 7968 | { |
2d1fe073 | 7969 | if (IS_GEN9(dev_priv)) |
500a3d2e MK |
7970 | return DIV_ROUND_CLOSEST(val * GT_FREQUENCY_MULTIPLIER, |
7971 | GEN9_FREQ_SCALER); | |
2d1fe073 | 7972 | else if (IS_CHERRYVIEW(dev_priv)) |
616bc820 | 7973 | return chv_gpu_freq(dev_priv, val); |
2d1fe073 | 7974 | else if (IS_VALLEYVIEW(dev_priv)) |
616bc820 VS |
7975 | return byt_gpu_freq(dev_priv, val); |
7976 | else | |
7977 | return val * GT_FREQUENCY_MULTIPLIER; | |
22b1b2f8 D |
7978 | } |
7979 | ||
616bc820 VS |
7980 | int intel_freq_opcode(struct drm_i915_private *dev_priv, int val) |
7981 | { | |
2d1fe073 | 7982 | if (IS_GEN9(dev_priv)) |
500a3d2e MK |
7983 | return DIV_ROUND_CLOSEST(val * GEN9_FREQ_SCALER, |
7984 | GT_FREQUENCY_MULTIPLIER); | |
2d1fe073 | 7985 | else if (IS_CHERRYVIEW(dev_priv)) |
616bc820 | 7986 | return chv_freq_opcode(dev_priv, val); |
2d1fe073 | 7987 | else if (IS_VALLEYVIEW(dev_priv)) |
616bc820 VS |
7988 | return byt_freq_opcode(dev_priv, val); |
7989 | else | |
500a3d2e | 7990 | return DIV_ROUND_CLOSEST(val, GT_FREQUENCY_MULTIPLIER); |
616bc820 | 7991 | } |
22b1b2f8 | 7992 | |
6ad790c0 CW |
7993 | struct request_boost { |
7994 | struct work_struct work; | |
eed29a5b | 7995 | struct drm_i915_gem_request *req; |
6ad790c0 CW |
7996 | }; |
7997 | ||
7998 | static void __intel_rps_boost_work(struct work_struct *work) | |
7999 | { | |
8000 | struct request_boost *boost = container_of(work, struct request_boost, work); | |
e61b9958 | 8001 | struct drm_i915_gem_request *req = boost->req; |
6ad790c0 | 8002 | |
f69a02c9 | 8003 | if (!i915_gem_request_completed(req)) |
c033666a | 8004 | gen6_rps_boost(req->i915, NULL, req->emitted_jiffies); |
6ad790c0 | 8005 | |
e8a261ea | 8006 | i915_gem_request_put(req); |
6ad790c0 CW |
8007 | kfree(boost); |
8008 | } | |
8009 | ||
91d14251 | 8010 | void intel_queue_rps_boost_for_request(struct drm_i915_gem_request *req) |
6ad790c0 CW |
8011 | { |
8012 | struct request_boost *boost; | |
8013 | ||
91d14251 | 8014 | if (req == NULL || INTEL_GEN(req->i915) < 6) |
6ad790c0 CW |
8015 | return; |
8016 | ||
f69a02c9 | 8017 | if (i915_gem_request_completed(req)) |
e61b9958 CW |
8018 | return; |
8019 | ||
6ad790c0 CW |
8020 | boost = kmalloc(sizeof(*boost), GFP_ATOMIC); |
8021 | if (boost == NULL) | |
8022 | return; | |
8023 | ||
e8a261ea | 8024 | boost->req = i915_gem_request_get(req); |
6ad790c0 CW |
8025 | |
8026 | INIT_WORK(&boost->work, __intel_rps_boost_work); | |
91d14251 | 8027 | queue_work(req->i915->wq, &boost->work); |
6ad790c0 CW |
8028 | } |
8029 | ||
f742a552 | 8030 | void intel_pm_setup(struct drm_device *dev) |
907b28c5 | 8031 | { |
fac5e23e | 8032 | struct drm_i915_private *dev_priv = to_i915(dev); |
907b28c5 | 8033 | |
f742a552 | 8034 | mutex_init(&dev_priv->rps.hw_lock); |
8d3afd7d | 8035 | spin_lock_init(&dev_priv->rps.client_lock); |
f742a552 | 8036 | |
54b4f68f CW |
8037 | INIT_DELAYED_WORK(&dev_priv->rps.autoenable_work, |
8038 | __intel_autoenable_gt_powersave); | |
1854d5ca | 8039 | INIT_LIST_HEAD(&dev_priv->rps.clients); |
5d584b2e | 8040 | |
33688d95 | 8041 | dev_priv->pm.suspended = false; |
1f814dac | 8042 | atomic_set(&dev_priv->pm.wakeref_count, 0); |
2b19efeb | 8043 | atomic_set(&dev_priv->pm.atomic_seq, 0); |
907b28c5 | 8044 | } |