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85208be0 ED |
1 | /* |
2 | * Copyright © 2012 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Eugeni Dodonov <eugeni.dodonov@intel.com> | |
25 | * | |
26 | */ | |
27 | ||
2b4e57bd | 28 | #include <linux/cpufreq.h> |
85208be0 ED |
29 | #include "i915_drv.h" |
30 | #include "intel_drv.h" | |
eb48eb00 DV |
31 | #include "../../../platform/x86/intel_ips.h" |
32 | #include <linux/module.h> | |
f4db9321 | 33 | #include <drm/i915_powerwell.h> |
85208be0 | 34 | |
f6750b3c ED |
35 | /* FBC, or Frame Buffer Compression, is a technique employed to compress the |
36 | * framebuffer contents in-memory, aiming at reducing the required bandwidth | |
37 | * during in-memory transfers and, therefore, reduce the power packet. | |
85208be0 | 38 | * |
f6750b3c ED |
39 | * The benefits of FBC are mostly visible with solid backgrounds and |
40 | * variation-less patterns. | |
85208be0 | 41 | * |
f6750b3c ED |
42 | * FBC-related functionality can be enabled by the means of the |
43 | * i915.i915_enable_fbc parameter | |
85208be0 ED |
44 | */ |
45 | ||
3490ea5d CW |
46 | static bool intel_crtc_active(struct drm_crtc *crtc) |
47 | { | |
48 | /* Be paranoid as we can arrive here with only partial | |
49 | * state retrieved from the hardware during setup. | |
50 | */ | |
51 | return to_intel_crtc(crtc)->active && crtc->fb && crtc->mode.clock; | |
52 | } | |
53 | ||
1fa61106 | 54 | static void i8xx_disable_fbc(struct drm_device *dev) |
85208be0 ED |
55 | { |
56 | struct drm_i915_private *dev_priv = dev->dev_private; | |
57 | u32 fbc_ctl; | |
58 | ||
59 | /* Disable compression */ | |
60 | fbc_ctl = I915_READ(FBC_CONTROL); | |
61 | if ((fbc_ctl & FBC_CTL_EN) == 0) | |
62 | return; | |
63 | ||
64 | fbc_ctl &= ~FBC_CTL_EN; | |
65 | I915_WRITE(FBC_CONTROL, fbc_ctl); | |
66 | ||
67 | /* Wait for compressing bit to clear */ | |
68 | if (wait_for((I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING) == 0, 10)) { | |
69 | DRM_DEBUG_KMS("FBC idle timed out\n"); | |
70 | return; | |
71 | } | |
72 | ||
73 | DRM_DEBUG_KMS("disabled FBC\n"); | |
74 | } | |
75 | ||
1fa61106 | 76 | static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
85208be0 ED |
77 | { |
78 | struct drm_device *dev = crtc->dev; | |
79 | struct drm_i915_private *dev_priv = dev->dev_private; | |
80 | struct drm_framebuffer *fb = crtc->fb; | |
81 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
82 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
83 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
84 | int cfb_pitch; | |
85 | int plane, i; | |
86 | u32 fbc_ctl, fbc_ctl2; | |
87 | ||
5c3fe8b0 | 88 | cfb_pitch = dev_priv->fbc.size / FBC_LL_SIZE; |
85208be0 ED |
89 | if (fb->pitches[0] < cfb_pitch) |
90 | cfb_pitch = fb->pitches[0]; | |
91 | ||
92 | /* FBC_CTL wants 64B units */ | |
93 | cfb_pitch = (cfb_pitch / 64) - 1; | |
94 | plane = intel_crtc->plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB; | |
95 | ||
96 | /* Clear old tags */ | |
97 | for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++) | |
98 | I915_WRITE(FBC_TAG + (i * 4), 0); | |
99 | ||
100 | /* Set it up... */ | |
101 | fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | FBC_CTL_CPU_FENCE; | |
102 | fbc_ctl2 |= plane; | |
103 | I915_WRITE(FBC_CONTROL2, fbc_ctl2); | |
104 | I915_WRITE(FBC_FENCE_OFF, crtc->y); | |
105 | ||
106 | /* enable it... */ | |
107 | fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC; | |
108 | if (IS_I945GM(dev)) | |
109 | fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */ | |
110 | fbc_ctl |= (cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT; | |
111 | fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT; | |
112 | fbc_ctl |= obj->fence_reg; | |
113 | I915_WRITE(FBC_CONTROL, fbc_ctl); | |
114 | ||
84f44ce7 VS |
115 | DRM_DEBUG_KMS("enabled FBC, pitch %d, yoff %d, plane %c, ", |
116 | cfb_pitch, crtc->y, plane_name(intel_crtc->plane)); | |
85208be0 ED |
117 | } |
118 | ||
1fa61106 | 119 | static bool i8xx_fbc_enabled(struct drm_device *dev) |
85208be0 ED |
120 | { |
121 | struct drm_i915_private *dev_priv = dev->dev_private; | |
122 | ||
123 | return I915_READ(FBC_CONTROL) & FBC_CTL_EN; | |
124 | } | |
125 | ||
1fa61106 | 126 | static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
85208be0 ED |
127 | { |
128 | struct drm_device *dev = crtc->dev; | |
129 | struct drm_i915_private *dev_priv = dev->dev_private; | |
130 | struct drm_framebuffer *fb = crtc->fb; | |
131 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
132 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
133 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
134 | int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB; | |
135 | unsigned long stall_watermark = 200; | |
136 | u32 dpfc_ctl; | |
137 | ||
138 | dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X; | |
139 | dpfc_ctl |= DPFC_CTL_FENCE_EN | obj->fence_reg; | |
140 | I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY); | |
141 | ||
142 | I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN | | |
143 | (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) | | |
144 | (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT)); | |
145 | I915_WRITE(DPFC_FENCE_YOFF, crtc->y); | |
146 | ||
147 | /* enable it... */ | |
148 | I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN); | |
149 | ||
84f44ce7 | 150 | DRM_DEBUG_KMS("enabled fbc on plane %c\n", plane_name(intel_crtc->plane)); |
85208be0 ED |
151 | } |
152 | ||
1fa61106 | 153 | static void g4x_disable_fbc(struct drm_device *dev) |
85208be0 ED |
154 | { |
155 | struct drm_i915_private *dev_priv = dev->dev_private; | |
156 | u32 dpfc_ctl; | |
157 | ||
158 | /* Disable compression */ | |
159 | dpfc_ctl = I915_READ(DPFC_CONTROL); | |
160 | if (dpfc_ctl & DPFC_CTL_EN) { | |
161 | dpfc_ctl &= ~DPFC_CTL_EN; | |
162 | I915_WRITE(DPFC_CONTROL, dpfc_ctl); | |
163 | ||
164 | DRM_DEBUG_KMS("disabled FBC\n"); | |
165 | } | |
166 | } | |
167 | ||
1fa61106 | 168 | static bool g4x_fbc_enabled(struct drm_device *dev) |
85208be0 ED |
169 | { |
170 | struct drm_i915_private *dev_priv = dev->dev_private; | |
171 | ||
172 | return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN; | |
173 | } | |
174 | ||
175 | static void sandybridge_blit_fbc_update(struct drm_device *dev) | |
176 | { | |
177 | struct drm_i915_private *dev_priv = dev->dev_private; | |
178 | u32 blt_ecoskpd; | |
179 | ||
180 | /* Make sure blitter notifies FBC of writes */ | |
181 | gen6_gt_force_wake_get(dev_priv); | |
182 | blt_ecoskpd = I915_READ(GEN6_BLITTER_ECOSKPD); | |
183 | blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY << | |
184 | GEN6_BLITTER_LOCK_SHIFT; | |
185 | I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd); | |
186 | blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY; | |
187 | I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd); | |
188 | blt_ecoskpd &= ~(GEN6_BLITTER_FBC_NOTIFY << | |
189 | GEN6_BLITTER_LOCK_SHIFT); | |
190 | I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd); | |
191 | POSTING_READ(GEN6_BLITTER_ECOSKPD); | |
192 | gen6_gt_force_wake_put(dev_priv); | |
193 | } | |
194 | ||
1fa61106 | 195 | static void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
85208be0 ED |
196 | { |
197 | struct drm_device *dev = crtc->dev; | |
198 | struct drm_i915_private *dev_priv = dev->dev_private; | |
199 | struct drm_framebuffer *fb = crtc->fb; | |
200 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
201 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
202 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
203 | int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB; | |
204 | unsigned long stall_watermark = 200; | |
205 | u32 dpfc_ctl; | |
206 | ||
207 | dpfc_ctl = I915_READ(ILK_DPFC_CONTROL); | |
208 | dpfc_ctl &= DPFC_RESERVED; | |
209 | dpfc_ctl |= (plane | DPFC_CTL_LIMIT_1X); | |
210 | /* Set persistent mode for front-buffer rendering, ala X. */ | |
211 | dpfc_ctl |= DPFC_CTL_PERSISTENT_MODE; | |
212 | dpfc_ctl |= (DPFC_CTL_FENCE_EN | obj->fence_reg); | |
213 | I915_WRITE(ILK_DPFC_CHICKEN, DPFC_HT_MODIFY); | |
214 | ||
215 | I915_WRITE(ILK_DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN | | |
216 | (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) | | |
217 | (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT)); | |
218 | I915_WRITE(ILK_DPFC_FENCE_YOFF, crtc->y); | |
f343c5f6 | 219 | I915_WRITE(ILK_FBC_RT_BASE, i915_gem_obj_ggtt_offset(obj) | ILK_FBC_RT_VALID); |
85208be0 ED |
220 | /* enable it... */ |
221 | I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl | DPFC_CTL_EN); | |
222 | ||
223 | if (IS_GEN6(dev)) { | |
224 | I915_WRITE(SNB_DPFC_CTL_SA, | |
225 | SNB_CPU_FENCE_ENABLE | obj->fence_reg); | |
226 | I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y); | |
227 | sandybridge_blit_fbc_update(dev); | |
228 | } | |
229 | ||
84f44ce7 | 230 | DRM_DEBUG_KMS("enabled fbc on plane %c\n", plane_name(intel_crtc->plane)); |
85208be0 ED |
231 | } |
232 | ||
1fa61106 | 233 | static void ironlake_disable_fbc(struct drm_device *dev) |
85208be0 ED |
234 | { |
235 | struct drm_i915_private *dev_priv = dev->dev_private; | |
236 | u32 dpfc_ctl; | |
237 | ||
238 | /* Disable compression */ | |
239 | dpfc_ctl = I915_READ(ILK_DPFC_CONTROL); | |
240 | if (dpfc_ctl & DPFC_CTL_EN) { | |
241 | dpfc_ctl &= ~DPFC_CTL_EN; | |
242 | I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl); | |
243 | ||
b74ea102 | 244 | if (IS_IVYBRIDGE(dev)) |
7dd23ba0 | 245 | /* WaFbcDisableDpfcClockGating:ivb */ |
b74ea102 RV |
246 | I915_WRITE(ILK_DSPCLK_GATE_D, |
247 | I915_READ(ILK_DSPCLK_GATE_D) & | |
248 | ~ILK_DPFCUNIT_CLOCK_GATE_DISABLE); | |
249 | ||
d89f2071 | 250 | if (IS_HASWELL(dev)) |
7dd23ba0 | 251 | /* WaFbcDisableDpfcClockGating:hsw */ |
d89f2071 RV |
252 | I915_WRITE(HSW_CLKGATE_DISABLE_PART_1, |
253 | I915_READ(HSW_CLKGATE_DISABLE_PART_1) & | |
254 | ~HSW_DPFC_GATING_DISABLE); | |
255 | ||
85208be0 ED |
256 | DRM_DEBUG_KMS("disabled FBC\n"); |
257 | } | |
258 | } | |
259 | ||
1fa61106 | 260 | static bool ironlake_fbc_enabled(struct drm_device *dev) |
85208be0 ED |
261 | { |
262 | struct drm_i915_private *dev_priv = dev->dev_private; | |
263 | ||
264 | return I915_READ(ILK_DPFC_CONTROL) & DPFC_CTL_EN; | |
265 | } | |
266 | ||
abe959c7 RV |
267 | static void gen7_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
268 | { | |
269 | struct drm_device *dev = crtc->dev; | |
270 | struct drm_i915_private *dev_priv = dev->dev_private; | |
271 | struct drm_framebuffer *fb = crtc->fb; | |
272 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
273 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
274 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
275 | ||
f343c5f6 | 276 | I915_WRITE(IVB_FBC_RT_BASE, i915_gem_obj_ggtt_offset(obj)); |
abe959c7 RV |
277 | |
278 | I915_WRITE(ILK_DPFC_CONTROL, DPFC_CTL_EN | DPFC_CTL_LIMIT_1X | | |
279 | IVB_DPFC_CTL_FENCE_EN | | |
280 | intel_crtc->plane << IVB_DPFC_CTL_PLANE_SHIFT); | |
281 | ||
891348b2 | 282 | if (IS_IVYBRIDGE(dev)) { |
7dd23ba0 | 283 | /* WaFbcAsynchFlipDisableFbcQueue:ivb */ |
891348b2 | 284 | I915_WRITE(ILK_DISPLAY_CHICKEN1, ILK_FBCQ_DIS); |
7dd23ba0 | 285 | /* WaFbcDisableDpfcClockGating:ivb */ |
891348b2 RV |
286 | I915_WRITE(ILK_DSPCLK_GATE_D, |
287 | I915_READ(ILK_DSPCLK_GATE_D) | | |
288 | ILK_DPFCUNIT_CLOCK_GATE_DISABLE); | |
28554164 | 289 | } else { |
7dd23ba0 | 290 | /* WaFbcAsynchFlipDisableFbcQueue:hsw */ |
28554164 RV |
291 | I915_WRITE(HSW_PIPE_SLICE_CHICKEN_1(intel_crtc->pipe), |
292 | HSW_BYPASS_FBC_QUEUE); | |
7dd23ba0 | 293 | /* WaFbcDisableDpfcClockGating:hsw */ |
d89f2071 RV |
294 | I915_WRITE(HSW_CLKGATE_DISABLE_PART_1, |
295 | I915_READ(HSW_CLKGATE_DISABLE_PART_1) | | |
296 | HSW_DPFC_GATING_DISABLE); | |
891348b2 | 297 | } |
b74ea102 | 298 | |
abe959c7 RV |
299 | I915_WRITE(SNB_DPFC_CTL_SA, |
300 | SNB_CPU_FENCE_ENABLE | obj->fence_reg); | |
301 | I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y); | |
302 | ||
303 | sandybridge_blit_fbc_update(dev); | |
304 | ||
305 | DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane); | |
306 | } | |
307 | ||
85208be0 ED |
308 | bool intel_fbc_enabled(struct drm_device *dev) |
309 | { | |
310 | struct drm_i915_private *dev_priv = dev->dev_private; | |
311 | ||
312 | if (!dev_priv->display.fbc_enabled) | |
313 | return false; | |
314 | ||
315 | return dev_priv->display.fbc_enabled(dev); | |
316 | } | |
317 | ||
318 | static void intel_fbc_work_fn(struct work_struct *__work) | |
319 | { | |
320 | struct intel_fbc_work *work = | |
321 | container_of(to_delayed_work(__work), | |
322 | struct intel_fbc_work, work); | |
323 | struct drm_device *dev = work->crtc->dev; | |
324 | struct drm_i915_private *dev_priv = dev->dev_private; | |
325 | ||
326 | mutex_lock(&dev->struct_mutex); | |
5c3fe8b0 | 327 | if (work == dev_priv->fbc.fbc_work) { |
85208be0 ED |
328 | /* Double check that we haven't switched fb without cancelling |
329 | * the prior work. | |
330 | */ | |
331 | if (work->crtc->fb == work->fb) { | |
332 | dev_priv->display.enable_fbc(work->crtc, | |
333 | work->interval); | |
334 | ||
5c3fe8b0 BW |
335 | dev_priv->fbc.plane = to_intel_crtc(work->crtc)->plane; |
336 | dev_priv->fbc.fb_id = work->crtc->fb->base.id; | |
337 | dev_priv->fbc.y = work->crtc->y; | |
85208be0 ED |
338 | } |
339 | ||
5c3fe8b0 | 340 | dev_priv->fbc.fbc_work = NULL; |
85208be0 ED |
341 | } |
342 | mutex_unlock(&dev->struct_mutex); | |
343 | ||
344 | kfree(work); | |
345 | } | |
346 | ||
347 | static void intel_cancel_fbc_work(struct drm_i915_private *dev_priv) | |
348 | { | |
5c3fe8b0 | 349 | if (dev_priv->fbc.fbc_work == NULL) |
85208be0 ED |
350 | return; |
351 | ||
352 | DRM_DEBUG_KMS("cancelling pending FBC enable\n"); | |
353 | ||
354 | /* Synchronisation is provided by struct_mutex and checking of | |
5c3fe8b0 | 355 | * dev_priv->fbc.fbc_work, so we can perform the cancellation |
85208be0 ED |
356 | * entirely asynchronously. |
357 | */ | |
5c3fe8b0 | 358 | if (cancel_delayed_work(&dev_priv->fbc.fbc_work->work)) |
85208be0 | 359 | /* tasklet was killed before being run, clean up */ |
5c3fe8b0 | 360 | kfree(dev_priv->fbc.fbc_work); |
85208be0 ED |
361 | |
362 | /* Mark the work as no longer wanted so that if it does | |
363 | * wake-up (because the work was already running and waiting | |
364 | * for our mutex), it will discover that is no longer | |
365 | * necessary to run. | |
366 | */ | |
5c3fe8b0 | 367 | dev_priv->fbc.fbc_work = NULL; |
85208be0 ED |
368 | } |
369 | ||
b63fb44c | 370 | static void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
85208be0 ED |
371 | { |
372 | struct intel_fbc_work *work; | |
373 | struct drm_device *dev = crtc->dev; | |
374 | struct drm_i915_private *dev_priv = dev->dev_private; | |
375 | ||
376 | if (!dev_priv->display.enable_fbc) | |
377 | return; | |
378 | ||
379 | intel_cancel_fbc_work(dev_priv); | |
380 | ||
381 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
382 | if (work == NULL) { | |
6cdcb5e7 | 383 | DRM_ERROR("Failed to allocate FBC work structure\n"); |
85208be0 ED |
384 | dev_priv->display.enable_fbc(crtc, interval); |
385 | return; | |
386 | } | |
387 | ||
388 | work->crtc = crtc; | |
389 | work->fb = crtc->fb; | |
390 | work->interval = interval; | |
391 | INIT_DELAYED_WORK(&work->work, intel_fbc_work_fn); | |
392 | ||
5c3fe8b0 | 393 | dev_priv->fbc.fbc_work = work; |
85208be0 | 394 | |
85208be0 ED |
395 | /* Delay the actual enabling to let pageflipping cease and the |
396 | * display to settle before starting the compression. Note that | |
397 | * this delay also serves a second purpose: it allows for a | |
398 | * vblank to pass after disabling the FBC before we attempt | |
399 | * to modify the control registers. | |
400 | * | |
401 | * A more complicated solution would involve tracking vblanks | |
402 | * following the termination of the page-flipping sequence | |
403 | * and indeed performing the enable as a co-routine and not | |
404 | * waiting synchronously upon the vblank. | |
7457d617 DL |
405 | * |
406 | * WaFbcWaitForVBlankBeforeEnable:ilk,snb | |
85208be0 ED |
407 | */ |
408 | schedule_delayed_work(&work->work, msecs_to_jiffies(50)); | |
409 | } | |
410 | ||
411 | void intel_disable_fbc(struct drm_device *dev) | |
412 | { | |
413 | struct drm_i915_private *dev_priv = dev->dev_private; | |
414 | ||
415 | intel_cancel_fbc_work(dev_priv); | |
416 | ||
417 | if (!dev_priv->display.disable_fbc) | |
418 | return; | |
419 | ||
420 | dev_priv->display.disable_fbc(dev); | |
5c3fe8b0 | 421 | dev_priv->fbc.plane = -1; |
85208be0 ED |
422 | } |
423 | ||
29ebf90f CW |
424 | static bool set_no_fbc_reason(struct drm_i915_private *dev_priv, |
425 | enum no_fbc_reason reason) | |
426 | { | |
427 | if (dev_priv->fbc.no_fbc_reason == reason) | |
428 | return false; | |
429 | ||
430 | dev_priv->fbc.no_fbc_reason = reason; | |
431 | return true; | |
432 | } | |
433 | ||
85208be0 ED |
434 | /** |
435 | * intel_update_fbc - enable/disable FBC as needed | |
436 | * @dev: the drm_device | |
437 | * | |
438 | * Set up the framebuffer compression hardware at mode set time. We | |
439 | * enable it if possible: | |
440 | * - plane A only (on pre-965) | |
441 | * - no pixel mulitply/line duplication | |
442 | * - no alpha buffer discard | |
443 | * - no dual wide | |
f85da868 | 444 | * - framebuffer <= max_hdisplay in width, max_vdisplay in height |
85208be0 ED |
445 | * |
446 | * We can't assume that any compression will take place (worst case), | |
447 | * so the compressed buffer has to be the same size as the uncompressed | |
448 | * one. It also must reside (along with the line length buffer) in | |
449 | * stolen memory. | |
450 | * | |
451 | * We need to enable/disable FBC on a global basis. | |
452 | */ | |
453 | void intel_update_fbc(struct drm_device *dev) | |
454 | { | |
455 | struct drm_i915_private *dev_priv = dev->dev_private; | |
456 | struct drm_crtc *crtc = NULL, *tmp_crtc; | |
457 | struct intel_crtc *intel_crtc; | |
458 | struct drm_framebuffer *fb; | |
459 | struct intel_framebuffer *intel_fb; | |
460 | struct drm_i915_gem_object *obj; | |
f85da868 | 461 | unsigned int max_hdisplay, max_vdisplay; |
85208be0 | 462 | |
29ebf90f CW |
463 | if (!I915_HAS_FBC(dev)) { |
464 | set_no_fbc_reason(dev_priv, FBC_UNSUPPORTED); | |
85208be0 | 465 | return; |
29ebf90f | 466 | } |
85208be0 | 467 | |
29ebf90f CW |
468 | if (!i915_powersave) { |
469 | if (set_no_fbc_reason(dev_priv, FBC_MODULE_PARAM)) | |
470 | DRM_DEBUG_KMS("fbc disabled per module param\n"); | |
85208be0 | 471 | return; |
29ebf90f | 472 | } |
85208be0 ED |
473 | |
474 | /* | |
475 | * If FBC is already on, we just have to verify that we can | |
476 | * keep it that way... | |
477 | * Need to disable if: | |
478 | * - more than one pipe is active | |
479 | * - changing FBC params (stride, fence, mode) | |
480 | * - new fb is too large to fit in compressed buffer | |
481 | * - going to an unsupported config (interlace, pixel multiply, etc.) | |
482 | */ | |
483 | list_for_each_entry(tmp_crtc, &dev->mode_config.crtc_list, head) { | |
3490ea5d CW |
484 | if (intel_crtc_active(tmp_crtc) && |
485 | !to_intel_crtc(tmp_crtc)->primary_disabled) { | |
85208be0 | 486 | if (crtc) { |
29ebf90f CW |
487 | if (set_no_fbc_reason(dev_priv, FBC_MULTIPLE_PIPES)) |
488 | DRM_DEBUG_KMS("more than one pipe active, disabling compression\n"); | |
85208be0 ED |
489 | goto out_disable; |
490 | } | |
491 | crtc = tmp_crtc; | |
492 | } | |
493 | } | |
494 | ||
495 | if (!crtc || crtc->fb == NULL) { | |
29ebf90f CW |
496 | if (set_no_fbc_reason(dev_priv, FBC_NO_OUTPUT)) |
497 | DRM_DEBUG_KMS("no output, disabling\n"); | |
85208be0 ED |
498 | goto out_disable; |
499 | } | |
500 | ||
501 | intel_crtc = to_intel_crtc(crtc); | |
502 | fb = crtc->fb; | |
503 | intel_fb = to_intel_framebuffer(fb); | |
504 | obj = intel_fb->obj; | |
505 | ||
8a5729a3 DL |
506 | if (i915_enable_fbc < 0 && |
507 | INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev)) { | |
29ebf90f CW |
508 | if (set_no_fbc_reason(dev_priv, FBC_CHIP_DEFAULT)) |
509 | DRM_DEBUG_KMS("disabled per chip default\n"); | |
8a5729a3 | 510 | goto out_disable; |
85208be0 | 511 | } |
8a5729a3 | 512 | if (!i915_enable_fbc) { |
29ebf90f CW |
513 | if (set_no_fbc_reason(dev_priv, FBC_MODULE_PARAM)) |
514 | DRM_DEBUG_KMS("fbc disabled per module param\n"); | |
85208be0 ED |
515 | goto out_disable; |
516 | } | |
85208be0 ED |
517 | if ((crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) || |
518 | (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)) { | |
29ebf90f CW |
519 | if (set_no_fbc_reason(dev_priv, FBC_UNSUPPORTED_MODE)) |
520 | DRM_DEBUG_KMS("mode incompatible with compression, " | |
521 | "disabling\n"); | |
85208be0 ED |
522 | goto out_disable; |
523 | } | |
f85da868 PZ |
524 | |
525 | if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { | |
526 | max_hdisplay = 4096; | |
527 | max_vdisplay = 2048; | |
528 | } else { | |
529 | max_hdisplay = 2048; | |
530 | max_vdisplay = 1536; | |
531 | } | |
532 | if ((crtc->mode.hdisplay > max_hdisplay) || | |
533 | (crtc->mode.vdisplay > max_vdisplay)) { | |
29ebf90f CW |
534 | if (set_no_fbc_reason(dev_priv, FBC_MODE_TOO_LARGE)) |
535 | DRM_DEBUG_KMS("mode too large for compression, disabling\n"); | |
85208be0 ED |
536 | goto out_disable; |
537 | } | |
891348b2 RV |
538 | if ((IS_I915GM(dev) || IS_I945GM(dev) || IS_HASWELL(dev)) && |
539 | intel_crtc->plane != 0) { | |
29ebf90f CW |
540 | if (set_no_fbc_reason(dev_priv, FBC_BAD_PLANE)) |
541 | DRM_DEBUG_KMS("plane not 0, disabling compression\n"); | |
85208be0 ED |
542 | goto out_disable; |
543 | } | |
544 | ||
545 | /* The use of a CPU fence is mandatory in order to detect writes | |
546 | * by the CPU to the scanout and trigger updates to the FBC. | |
547 | */ | |
548 | if (obj->tiling_mode != I915_TILING_X || | |
549 | obj->fence_reg == I915_FENCE_REG_NONE) { | |
29ebf90f CW |
550 | if (set_no_fbc_reason(dev_priv, FBC_NOT_TILED)) |
551 | DRM_DEBUG_KMS("framebuffer not tiled or fenced, disabling compression\n"); | |
85208be0 ED |
552 | goto out_disable; |
553 | } | |
554 | ||
555 | /* If the kernel debugger is active, always disable compression */ | |
556 | if (in_dbg_master()) | |
557 | goto out_disable; | |
558 | ||
11be49eb | 559 | if (i915_gem_stolen_setup_compression(dev, intel_fb->obj->base.size)) { |
29ebf90f CW |
560 | if (set_no_fbc_reason(dev_priv, FBC_STOLEN_TOO_SMALL)) |
561 | DRM_DEBUG_KMS("framebuffer too large, disabling compression\n"); | |
11be49eb CW |
562 | goto out_disable; |
563 | } | |
564 | ||
85208be0 ED |
565 | /* If the scanout has not changed, don't modify the FBC settings. |
566 | * Note that we make the fundamental assumption that the fb->obj | |
567 | * cannot be unpinned (and have its GTT offset and fence revoked) | |
568 | * without first being decoupled from the scanout and FBC disabled. | |
569 | */ | |
5c3fe8b0 BW |
570 | if (dev_priv->fbc.plane == intel_crtc->plane && |
571 | dev_priv->fbc.fb_id == fb->base.id && | |
572 | dev_priv->fbc.y == crtc->y) | |
85208be0 ED |
573 | return; |
574 | ||
575 | if (intel_fbc_enabled(dev)) { | |
576 | /* We update FBC along two paths, after changing fb/crtc | |
577 | * configuration (modeswitching) and after page-flipping | |
578 | * finishes. For the latter, we know that not only did | |
579 | * we disable the FBC at the start of the page-flip | |
580 | * sequence, but also more than one vblank has passed. | |
581 | * | |
582 | * For the former case of modeswitching, it is possible | |
583 | * to switch between two FBC valid configurations | |
584 | * instantaneously so we do need to disable the FBC | |
585 | * before we can modify its control registers. We also | |
586 | * have to wait for the next vblank for that to take | |
587 | * effect. However, since we delay enabling FBC we can | |
588 | * assume that a vblank has passed since disabling and | |
589 | * that we can safely alter the registers in the deferred | |
590 | * callback. | |
591 | * | |
592 | * In the scenario that we go from a valid to invalid | |
593 | * and then back to valid FBC configuration we have | |
594 | * no strict enforcement that a vblank occurred since | |
595 | * disabling the FBC. However, along all current pipe | |
596 | * disabling paths we do need to wait for a vblank at | |
597 | * some point. And we wait before enabling FBC anyway. | |
598 | */ | |
599 | DRM_DEBUG_KMS("disabling active FBC for update\n"); | |
600 | intel_disable_fbc(dev); | |
601 | } | |
602 | ||
603 | intel_enable_fbc(crtc, 500); | |
29ebf90f | 604 | dev_priv->fbc.no_fbc_reason = FBC_OK; |
85208be0 ED |
605 | return; |
606 | ||
607 | out_disable: | |
608 | /* Multiple disables should be harmless */ | |
609 | if (intel_fbc_enabled(dev)) { | |
610 | DRM_DEBUG_KMS("unsupported config, disabling FBC\n"); | |
611 | intel_disable_fbc(dev); | |
612 | } | |
11be49eb | 613 | i915_gem_stolen_cleanup_compression(dev); |
85208be0 ED |
614 | } |
615 | ||
c921aba8 DV |
616 | static void i915_pineview_get_mem_freq(struct drm_device *dev) |
617 | { | |
618 | drm_i915_private_t *dev_priv = dev->dev_private; | |
619 | u32 tmp; | |
620 | ||
621 | tmp = I915_READ(CLKCFG); | |
622 | ||
623 | switch (tmp & CLKCFG_FSB_MASK) { | |
624 | case CLKCFG_FSB_533: | |
625 | dev_priv->fsb_freq = 533; /* 133*4 */ | |
626 | break; | |
627 | case CLKCFG_FSB_800: | |
628 | dev_priv->fsb_freq = 800; /* 200*4 */ | |
629 | break; | |
630 | case CLKCFG_FSB_667: | |
631 | dev_priv->fsb_freq = 667; /* 167*4 */ | |
632 | break; | |
633 | case CLKCFG_FSB_400: | |
634 | dev_priv->fsb_freq = 400; /* 100*4 */ | |
635 | break; | |
636 | } | |
637 | ||
638 | switch (tmp & CLKCFG_MEM_MASK) { | |
639 | case CLKCFG_MEM_533: | |
640 | dev_priv->mem_freq = 533; | |
641 | break; | |
642 | case CLKCFG_MEM_667: | |
643 | dev_priv->mem_freq = 667; | |
644 | break; | |
645 | case CLKCFG_MEM_800: | |
646 | dev_priv->mem_freq = 800; | |
647 | break; | |
648 | } | |
649 | ||
650 | /* detect pineview DDR3 setting */ | |
651 | tmp = I915_READ(CSHRDDR3CTL); | |
652 | dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0; | |
653 | } | |
654 | ||
655 | static void i915_ironlake_get_mem_freq(struct drm_device *dev) | |
656 | { | |
657 | drm_i915_private_t *dev_priv = dev->dev_private; | |
658 | u16 ddrpll, csipll; | |
659 | ||
660 | ddrpll = I915_READ16(DDRMPLL1); | |
661 | csipll = I915_READ16(CSIPLL0); | |
662 | ||
663 | switch (ddrpll & 0xff) { | |
664 | case 0xc: | |
665 | dev_priv->mem_freq = 800; | |
666 | break; | |
667 | case 0x10: | |
668 | dev_priv->mem_freq = 1066; | |
669 | break; | |
670 | case 0x14: | |
671 | dev_priv->mem_freq = 1333; | |
672 | break; | |
673 | case 0x18: | |
674 | dev_priv->mem_freq = 1600; | |
675 | break; | |
676 | default: | |
677 | DRM_DEBUG_DRIVER("unknown memory frequency 0x%02x\n", | |
678 | ddrpll & 0xff); | |
679 | dev_priv->mem_freq = 0; | |
680 | break; | |
681 | } | |
682 | ||
20e4d407 | 683 | dev_priv->ips.r_t = dev_priv->mem_freq; |
c921aba8 DV |
684 | |
685 | switch (csipll & 0x3ff) { | |
686 | case 0x00c: | |
687 | dev_priv->fsb_freq = 3200; | |
688 | break; | |
689 | case 0x00e: | |
690 | dev_priv->fsb_freq = 3733; | |
691 | break; | |
692 | case 0x010: | |
693 | dev_priv->fsb_freq = 4266; | |
694 | break; | |
695 | case 0x012: | |
696 | dev_priv->fsb_freq = 4800; | |
697 | break; | |
698 | case 0x014: | |
699 | dev_priv->fsb_freq = 5333; | |
700 | break; | |
701 | case 0x016: | |
702 | dev_priv->fsb_freq = 5866; | |
703 | break; | |
704 | case 0x018: | |
705 | dev_priv->fsb_freq = 6400; | |
706 | break; | |
707 | default: | |
708 | DRM_DEBUG_DRIVER("unknown fsb frequency 0x%04x\n", | |
709 | csipll & 0x3ff); | |
710 | dev_priv->fsb_freq = 0; | |
711 | break; | |
712 | } | |
713 | ||
714 | if (dev_priv->fsb_freq == 3200) { | |
20e4d407 | 715 | dev_priv->ips.c_m = 0; |
c921aba8 | 716 | } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) { |
20e4d407 | 717 | dev_priv->ips.c_m = 1; |
c921aba8 | 718 | } else { |
20e4d407 | 719 | dev_priv->ips.c_m = 2; |
c921aba8 DV |
720 | } |
721 | } | |
722 | ||
b445e3b0 ED |
723 | static const struct cxsr_latency cxsr_latency_table[] = { |
724 | {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */ | |
725 | {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */ | |
726 | {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */ | |
727 | {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */ | |
728 | {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */ | |
729 | ||
730 | {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */ | |
731 | {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */ | |
732 | {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */ | |
733 | {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */ | |
734 | {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */ | |
735 | ||
736 | {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */ | |
737 | {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */ | |
738 | {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */ | |
739 | {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */ | |
740 | {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */ | |
741 | ||
742 | {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */ | |
743 | {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */ | |
744 | {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */ | |
745 | {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */ | |
746 | {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */ | |
747 | ||
748 | {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */ | |
749 | {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */ | |
750 | {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */ | |
751 | {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */ | |
752 | {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */ | |
753 | ||
754 | {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */ | |
755 | {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */ | |
756 | {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */ | |
757 | {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */ | |
758 | {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */ | |
759 | }; | |
760 | ||
63c62275 | 761 | static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, |
b445e3b0 ED |
762 | int is_ddr3, |
763 | int fsb, | |
764 | int mem) | |
765 | { | |
766 | const struct cxsr_latency *latency; | |
767 | int i; | |
768 | ||
769 | if (fsb == 0 || mem == 0) | |
770 | return NULL; | |
771 | ||
772 | for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) { | |
773 | latency = &cxsr_latency_table[i]; | |
774 | if (is_desktop == latency->is_desktop && | |
775 | is_ddr3 == latency->is_ddr3 && | |
776 | fsb == latency->fsb_freq && mem == latency->mem_freq) | |
777 | return latency; | |
778 | } | |
779 | ||
780 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
781 | ||
782 | return NULL; | |
783 | } | |
784 | ||
1fa61106 | 785 | static void pineview_disable_cxsr(struct drm_device *dev) |
b445e3b0 ED |
786 | { |
787 | struct drm_i915_private *dev_priv = dev->dev_private; | |
788 | ||
789 | /* deactivate cxsr */ | |
790 | I915_WRITE(DSPFW3, I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN); | |
791 | } | |
792 | ||
793 | /* | |
794 | * Latency for FIFO fetches is dependent on several factors: | |
795 | * - memory configuration (speed, channels) | |
796 | * - chipset | |
797 | * - current MCH state | |
798 | * It can be fairly high in some situations, so here we assume a fairly | |
799 | * pessimal value. It's a tradeoff between extra memory fetches (if we | |
800 | * set this value too high, the FIFO will fetch frequently to stay full) | |
801 | * and power consumption (set it too low to save power and we might see | |
802 | * FIFO underruns and display "flicker"). | |
803 | * | |
804 | * A value of 5us seems to be a good balance; safe for very low end | |
805 | * platforms but not overly aggressive on lower latency configs. | |
806 | */ | |
807 | static const int latency_ns = 5000; | |
808 | ||
1fa61106 | 809 | static int i9xx_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
810 | { |
811 | struct drm_i915_private *dev_priv = dev->dev_private; | |
812 | uint32_t dsparb = I915_READ(DSPARB); | |
813 | int size; | |
814 | ||
815 | size = dsparb & 0x7f; | |
816 | if (plane) | |
817 | size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size; | |
818 | ||
819 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
820 | plane ? "B" : "A", size); | |
821 | ||
822 | return size; | |
823 | } | |
824 | ||
1fa61106 | 825 | static int i85x_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
826 | { |
827 | struct drm_i915_private *dev_priv = dev->dev_private; | |
828 | uint32_t dsparb = I915_READ(DSPARB); | |
829 | int size; | |
830 | ||
831 | size = dsparb & 0x1ff; | |
832 | if (plane) | |
833 | size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size; | |
834 | size >>= 1; /* Convert to cachelines */ | |
835 | ||
836 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
837 | plane ? "B" : "A", size); | |
838 | ||
839 | return size; | |
840 | } | |
841 | ||
1fa61106 | 842 | static int i845_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
843 | { |
844 | struct drm_i915_private *dev_priv = dev->dev_private; | |
845 | uint32_t dsparb = I915_READ(DSPARB); | |
846 | int size; | |
847 | ||
848 | size = dsparb & 0x7f; | |
849 | size >>= 2; /* Convert to cachelines */ | |
850 | ||
851 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
852 | plane ? "B" : "A", | |
853 | size); | |
854 | ||
855 | return size; | |
856 | } | |
857 | ||
1fa61106 | 858 | static int i830_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
859 | { |
860 | struct drm_i915_private *dev_priv = dev->dev_private; | |
861 | uint32_t dsparb = I915_READ(DSPARB); | |
862 | int size; | |
863 | ||
864 | size = dsparb & 0x7f; | |
865 | size >>= 1; /* Convert to cachelines */ | |
866 | ||
867 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
868 | plane ? "B" : "A", size); | |
869 | ||
870 | return size; | |
871 | } | |
872 | ||
873 | /* Pineview has different values for various configs */ | |
874 | static const struct intel_watermark_params pineview_display_wm = { | |
875 | PINEVIEW_DISPLAY_FIFO, | |
876 | PINEVIEW_MAX_WM, | |
877 | PINEVIEW_DFT_WM, | |
878 | PINEVIEW_GUARD_WM, | |
879 | PINEVIEW_FIFO_LINE_SIZE | |
880 | }; | |
881 | static const struct intel_watermark_params pineview_display_hplloff_wm = { | |
882 | PINEVIEW_DISPLAY_FIFO, | |
883 | PINEVIEW_MAX_WM, | |
884 | PINEVIEW_DFT_HPLLOFF_WM, | |
885 | PINEVIEW_GUARD_WM, | |
886 | PINEVIEW_FIFO_LINE_SIZE | |
887 | }; | |
888 | static const struct intel_watermark_params pineview_cursor_wm = { | |
889 | PINEVIEW_CURSOR_FIFO, | |
890 | PINEVIEW_CURSOR_MAX_WM, | |
891 | PINEVIEW_CURSOR_DFT_WM, | |
892 | PINEVIEW_CURSOR_GUARD_WM, | |
893 | PINEVIEW_FIFO_LINE_SIZE, | |
894 | }; | |
895 | static const struct intel_watermark_params pineview_cursor_hplloff_wm = { | |
896 | PINEVIEW_CURSOR_FIFO, | |
897 | PINEVIEW_CURSOR_MAX_WM, | |
898 | PINEVIEW_CURSOR_DFT_WM, | |
899 | PINEVIEW_CURSOR_GUARD_WM, | |
900 | PINEVIEW_FIFO_LINE_SIZE | |
901 | }; | |
902 | static const struct intel_watermark_params g4x_wm_info = { | |
903 | G4X_FIFO_SIZE, | |
904 | G4X_MAX_WM, | |
905 | G4X_MAX_WM, | |
906 | 2, | |
907 | G4X_FIFO_LINE_SIZE, | |
908 | }; | |
909 | static const struct intel_watermark_params g4x_cursor_wm_info = { | |
910 | I965_CURSOR_FIFO, | |
911 | I965_CURSOR_MAX_WM, | |
912 | I965_CURSOR_DFT_WM, | |
913 | 2, | |
914 | G4X_FIFO_LINE_SIZE, | |
915 | }; | |
916 | static const struct intel_watermark_params valleyview_wm_info = { | |
917 | VALLEYVIEW_FIFO_SIZE, | |
918 | VALLEYVIEW_MAX_WM, | |
919 | VALLEYVIEW_MAX_WM, | |
920 | 2, | |
921 | G4X_FIFO_LINE_SIZE, | |
922 | }; | |
923 | static const struct intel_watermark_params valleyview_cursor_wm_info = { | |
924 | I965_CURSOR_FIFO, | |
925 | VALLEYVIEW_CURSOR_MAX_WM, | |
926 | I965_CURSOR_DFT_WM, | |
927 | 2, | |
928 | G4X_FIFO_LINE_SIZE, | |
929 | }; | |
930 | static const struct intel_watermark_params i965_cursor_wm_info = { | |
931 | I965_CURSOR_FIFO, | |
932 | I965_CURSOR_MAX_WM, | |
933 | I965_CURSOR_DFT_WM, | |
934 | 2, | |
935 | I915_FIFO_LINE_SIZE, | |
936 | }; | |
937 | static const struct intel_watermark_params i945_wm_info = { | |
938 | I945_FIFO_SIZE, | |
939 | I915_MAX_WM, | |
940 | 1, | |
941 | 2, | |
942 | I915_FIFO_LINE_SIZE | |
943 | }; | |
944 | static const struct intel_watermark_params i915_wm_info = { | |
945 | I915_FIFO_SIZE, | |
946 | I915_MAX_WM, | |
947 | 1, | |
948 | 2, | |
949 | I915_FIFO_LINE_SIZE | |
950 | }; | |
951 | static const struct intel_watermark_params i855_wm_info = { | |
952 | I855GM_FIFO_SIZE, | |
953 | I915_MAX_WM, | |
954 | 1, | |
955 | 2, | |
956 | I830_FIFO_LINE_SIZE | |
957 | }; | |
958 | static const struct intel_watermark_params i830_wm_info = { | |
959 | I830_FIFO_SIZE, | |
960 | I915_MAX_WM, | |
961 | 1, | |
962 | 2, | |
963 | I830_FIFO_LINE_SIZE | |
964 | }; | |
965 | ||
966 | static const struct intel_watermark_params ironlake_display_wm_info = { | |
967 | ILK_DISPLAY_FIFO, | |
968 | ILK_DISPLAY_MAXWM, | |
969 | ILK_DISPLAY_DFTWM, | |
970 | 2, | |
971 | ILK_FIFO_LINE_SIZE | |
972 | }; | |
973 | static const struct intel_watermark_params ironlake_cursor_wm_info = { | |
974 | ILK_CURSOR_FIFO, | |
975 | ILK_CURSOR_MAXWM, | |
976 | ILK_CURSOR_DFTWM, | |
977 | 2, | |
978 | ILK_FIFO_LINE_SIZE | |
979 | }; | |
980 | static const struct intel_watermark_params ironlake_display_srwm_info = { | |
981 | ILK_DISPLAY_SR_FIFO, | |
982 | ILK_DISPLAY_MAX_SRWM, | |
983 | ILK_DISPLAY_DFT_SRWM, | |
984 | 2, | |
985 | ILK_FIFO_LINE_SIZE | |
986 | }; | |
987 | static const struct intel_watermark_params ironlake_cursor_srwm_info = { | |
988 | ILK_CURSOR_SR_FIFO, | |
989 | ILK_CURSOR_MAX_SRWM, | |
990 | ILK_CURSOR_DFT_SRWM, | |
991 | 2, | |
992 | ILK_FIFO_LINE_SIZE | |
993 | }; | |
994 | ||
995 | static const struct intel_watermark_params sandybridge_display_wm_info = { | |
996 | SNB_DISPLAY_FIFO, | |
997 | SNB_DISPLAY_MAXWM, | |
998 | SNB_DISPLAY_DFTWM, | |
999 | 2, | |
1000 | SNB_FIFO_LINE_SIZE | |
1001 | }; | |
1002 | static const struct intel_watermark_params sandybridge_cursor_wm_info = { | |
1003 | SNB_CURSOR_FIFO, | |
1004 | SNB_CURSOR_MAXWM, | |
1005 | SNB_CURSOR_DFTWM, | |
1006 | 2, | |
1007 | SNB_FIFO_LINE_SIZE | |
1008 | }; | |
1009 | static const struct intel_watermark_params sandybridge_display_srwm_info = { | |
1010 | SNB_DISPLAY_SR_FIFO, | |
1011 | SNB_DISPLAY_MAX_SRWM, | |
1012 | SNB_DISPLAY_DFT_SRWM, | |
1013 | 2, | |
1014 | SNB_FIFO_LINE_SIZE | |
1015 | }; | |
1016 | static const struct intel_watermark_params sandybridge_cursor_srwm_info = { | |
1017 | SNB_CURSOR_SR_FIFO, | |
1018 | SNB_CURSOR_MAX_SRWM, | |
1019 | SNB_CURSOR_DFT_SRWM, | |
1020 | 2, | |
1021 | SNB_FIFO_LINE_SIZE | |
1022 | }; | |
1023 | ||
1024 | ||
1025 | /** | |
1026 | * intel_calculate_wm - calculate watermark level | |
1027 | * @clock_in_khz: pixel clock | |
1028 | * @wm: chip FIFO params | |
1029 | * @pixel_size: display pixel size | |
1030 | * @latency_ns: memory latency for the platform | |
1031 | * | |
1032 | * Calculate the watermark level (the level at which the display plane will | |
1033 | * start fetching from memory again). Each chip has a different display | |
1034 | * FIFO size and allocation, so the caller needs to figure that out and pass | |
1035 | * in the correct intel_watermark_params structure. | |
1036 | * | |
1037 | * As the pixel clock runs, the FIFO will be drained at a rate that depends | |
1038 | * on the pixel size. When it reaches the watermark level, it'll start | |
1039 | * fetching FIFO line sized based chunks from memory until the FIFO fills | |
1040 | * past the watermark point. If the FIFO drains completely, a FIFO underrun | |
1041 | * will occur, and a display engine hang could result. | |
1042 | */ | |
1043 | static unsigned long intel_calculate_wm(unsigned long clock_in_khz, | |
1044 | const struct intel_watermark_params *wm, | |
1045 | int fifo_size, | |
1046 | int pixel_size, | |
1047 | unsigned long latency_ns) | |
1048 | { | |
1049 | long entries_required, wm_size; | |
1050 | ||
1051 | /* | |
1052 | * Note: we need to make sure we don't overflow for various clock & | |
1053 | * latency values. | |
1054 | * clocks go from a few thousand to several hundred thousand. | |
1055 | * latency is usually a few thousand | |
1056 | */ | |
1057 | entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) / | |
1058 | 1000; | |
1059 | entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size); | |
1060 | ||
1061 | DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required); | |
1062 | ||
1063 | wm_size = fifo_size - (entries_required + wm->guard_size); | |
1064 | ||
1065 | DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size); | |
1066 | ||
1067 | /* Don't promote wm_size to unsigned... */ | |
1068 | if (wm_size > (long)wm->max_wm) | |
1069 | wm_size = wm->max_wm; | |
1070 | if (wm_size <= 0) | |
1071 | wm_size = wm->default_wm; | |
1072 | return wm_size; | |
1073 | } | |
1074 | ||
1075 | static struct drm_crtc *single_enabled_crtc(struct drm_device *dev) | |
1076 | { | |
1077 | struct drm_crtc *crtc, *enabled = NULL; | |
1078 | ||
1079 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
3490ea5d | 1080 | if (intel_crtc_active(crtc)) { |
b445e3b0 ED |
1081 | if (enabled) |
1082 | return NULL; | |
1083 | enabled = crtc; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | return enabled; | |
1088 | } | |
1089 | ||
46ba614c | 1090 | static void pineview_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1091 | { |
46ba614c | 1092 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1093 | struct drm_i915_private *dev_priv = dev->dev_private; |
1094 | struct drm_crtc *crtc; | |
1095 | const struct cxsr_latency *latency; | |
1096 | u32 reg; | |
1097 | unsigned long wm; | |
1098 | ||
1099 | latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3, | |
1100 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
1101 | if (!latency) { | |
1102 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
1103 | pineview_disable_cxsr(dev); | |
1104 | return; | |
1105 | } | |
1106 | ||
1107 | crtc = single_enabled_crtc(dev); | |
1108 | if (crtc) { | |
1109 | int clock = crtc->mode.clock; | |
1110 | int pixel_size = crtc->fb->bits_per_pixel / 8; | |
1111 | ||
1112 | /* Display SR */ | |
1113 | wm = intel_calculate_wm(clock, &pineview_display_wm, | |
1114 | pineview_display_wm.fifo_size, | |
1115 | pixel_size, latency->display_sr); | |
1116 | reg = I915_READ(DSPFW1); | |
1117 | reg &= ~DSPFW_SR_MASK; | |
1118 | reg |= wm << DSPFW_SR_SHIFT; | |
1119 | I915_WRITE(DSPFW1, reg); | |
1120 | DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg); | |
1121 | ||
1122 | /* cursor SR */ | |
1123 | wm = intel_calculate_wm(clock, &pineview_cursor_wm, | |
1124 | pineview_display_wm.fifo_size, | |
1125 | pixel_size, latency->cursor_sr); | |
1126 | reg = I915_READ(DSPFW3); | |
1127 | reg &= ~DSPFW_CURSOR_SR_MASK; | |
1128 | reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT; | |
1129 | I915_WRITE(DSPFW3, reg); | |
1130 | ||
1131 | /* Display HPLL off SR */ | |
1132 | wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm, | |
1133 | pineview_display_hplloff_wm.fifo_size, | |
1134 | pixel_size, latency->display_hpll_disable); | |
1135 | reg = I915_READ(DSPFW3); | |
1136 | reg &= ~DSPFW_HPLL_SR_MASK; | |
1137 | reg |= wm & DSPFW_HPLL_SR_MASK; | |
1138 | I915_WRITE(DSPFW3, reg); | |
1139 | ||
1140 | /* cursor HPLL off SR */ | |
1141 | wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm, | |
1142 | pineview_display_hplloff_wm.fifo_size, | |
1143 | pixel_size, latency->cursor_hpll_disable); | |
1144 | reg = I915_READ(DSPFW3); | |
1145 | reg &= ~DSPFW_HPLL_CURSOR_MASK; | |
1146 | reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT; | |
1147 | I915_WRITE(DSPFW3, reg); | |
1148 | DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg); | |
1149 | ||
1150 | /* activate cxsr */ | |
1151 | I915_WRITE(DSPFW3, | |
1152 | I915_READ(DSPFW3) | PINEVIEW_SELF_REFRESH_EN); | |
1153 | DRM_DEBUG_KMS("Self-refresh is enabled\n"); | |
1154 | } else { | |
1155 | pineview_disable_cxsr(dev); | |
1156 | DRM_DEBUG_KMS("Self-refresh is disabled\n"); | |
1157 | } | |
1158 | } | |
1159 | ||
1160 | static bool g4x_compute_wm0(struct drm_device *dev, | |
1161 | int plane, | |
1162 | const struct intel_watermark_params *display, | |
1163 | int display_latency_ns, | |
1164 | const struct intel_watermark_params *cursor, | |
1165 | int cursor_latency_ns, | |
1166 | int *plane_wm, | |
1167 | int *cursor_wm) | |
1168 | { | |
1169 | struct drm_crtc *crtc; | |
1170 | int htotal, hdisplay, clock, pixel_size; | |
1171 | int line_time_us, line_count; | |
1172 | int entries, tlb_miss; | |
1173 | ||
1174 | crtc = intel_get_crtc_for_plane(dev, plane); | |
3490ea5d | 1175 | if (!intel_crtc_active(crtc)) { |
b445e3b0 ED |
1176 | *cursor_wm = cursor->guard_size; |
1177 | *plane_wm = display->guard_size; | |
1178 | return false; | |
1179 | } | |
1180 | ||
1181 | htotal = crtc->mode.htotal; | |
1182 | hdisplay = crtc->mode.hdisplay; | |
1183 | clock = crtc->mode.clock; | |
1184 | pixel_size = crtc->fb->bits_per_pixel / 8; | |
1185 | ||
1186 | /* Use the small buffer method to calculate plane watermark */ | |
1187 | entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000; | |
1188 | tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8; | |
1189 | if (tlb_miss > 0) | |
1190 | entries += tlb_miss; | |
1191 | entries = DIV_ROUND_UP(entries, display->cacheline_size); | |
1192 | *plane_wm = entries + display->guard_size; | |
1193 | if (*plane_wm > (int)display->max_wm) | |
1194 | *plane_wm = display->max_wm; | |
1195 | ||
1196 | /* Use the large buffer method to calculate cursor watermark */ | |
1197 | line_time_us = ((htotal * 1000) / clock); | |
1198 | line_count = (cursor_latency_ns / line_time_us + 1000) / 1000; | |
1199 | entries = line_count * 64 * pixel_size; | |
1200 | tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8; | |
1201 | if (tlb_miss > 0) | |
1202 | entries += tlb_miss; | |
1203 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); | |
1204 | *cursor_wm = entries + cursor->guard_size; | |
1205 | if (*cursor_wm > (int)cursor->max_wm) | |
1206 | *cursor_wm = (int)cursor->max_wm; | |
1207 | ||
1208 | return true; | |
1209 | } | |
1210 | ||
1211 | /* | |
1212 | * Check the wm result. | |
1213 | * | |
1214 | * If any calculated watermark values is larger than the maximum value that | |
1215 | * can be programmed into the associated watermark register, that watermark | |
1216 | * must be disabled. | |
1217 | */ | |
1218 | static bool g4x_check_srwm(struct drm_device *dev, | |
1219 | int display_wm, int cursor_wm, | |
1220 | const struct intel_watermark_params *display, | |
1221 | const struct intel_watermark_params *cursor) | |
1222 | { | |
1223 | DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n", | |
1224 | display_wm, cursor_wm); | |
1225 | ||
1226 | if (display_wm > display->max_wm) { | |
1227 | DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n", | |
1228 | display_wm, display->max_wm); | |
1229 | return false; | |
1230 | } | |
1231 | ||
1232 | if (cursor_wm > cursor->max_wm) { | |
1233 | DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n", | |
1234 | cursor_wm, cursor->max_wm); | |
1235 | return false; | |
1236 | } | |
1237 | ||
1238 | if (!(display_wm || cursor_wm)) { | |
1239 | DRM_DEBUG_KMS("SR latency is 0, disabling\n"); | |
1240 | return false; | |
1241 | } | |
1242 | ||
1243 | return true; | |
1244 | } | |
1245 | ||
1246 | static bool g4x_compute_srwm(struct drm_device *dev, | |
1247 | int plane, | |
1248 | int latency_ns, | |
1249 | const struct intel_watermark_params *display, | |
1250 | const struct intel_watermark_params *cursor, | |
1251 | int *display_wm, int *cursor_wm) | |
1252 | { | |
1253 | struct drm_crtc *crtc; | |
1254 | int hdisplay, htotal, pixel_size, clock; | |
1255 | unsigned long line_time_us; | |
1256 | int line_count, line_size; | |
1257 | int small, large; | |
1258 | int entries; | |
1259 | ||
1260 | if (!latency_ns) { | |
1261 | *display_wm = *cursor_wm = 0; | |
1262 | return false; | |
1263 | } | |
1264 | ||
1265 | crtc = intel_get_crtc_for_plane(dev, plane); | |
1266 | hdisplay = crtc->mode.hdisplay; | |
1267 | htotal = crtc->mode.htotal; | |
1268 | clock = crtc->mode.clock; | |
1269 | pixel_size = crtc->fb->bits_per_pixel / 8; | |
1270 | ||
1271 | line_time_us = (htotal * 1000) / clock; | |
1272 | line_count = (latency_ns / line_time_us + 1000) / 1000; | |
1273 | line_size = hdisplay * pixel_size; | |
1274 | ||
1275 | /* Use the minimum of the small and large buffer method for primary */ | |
1276 | small = ((clock * pixel_size / 1000) * latency_ns) / 1000; | |
1277 | large = line_count * line_size; | |
1278 | ||
1279 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); | |
1280 | *display_wm = entries + display->guard_size; | |
1281 | ||
1282 | /* calculate the self-refresh watermark for display cursor */ | |
1283 | entries = line_count * pixel_size * 64; | |
1284 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); | |
1285 | *cursor_wm = entries + cursor->guard_size; | |
1286 | ||
1287 | return g4x_check_srwm(dev, | |
1288 | *display_wm, *cursor_wm, | |
1289 | display, cursor); | |
1290 | } | |
1291 | ||
1292 | static bool vlv_compute_drain_latency(struct drm_device *dev, | |
1293 | int plane, | |
1294 | int *plane_prec_mult, | |
1295 | int *plane_dl, | |
1296 | int *cursor_prec_mult, | |
1297 | int *cursor_dl) | |
1298 | { | |
1299 | struct drm_crtc *crtc; | |
1300 | int clock, pixel_size; | |
1301 | int entries; | |
1302 | ||
1303 | crtc = intel_get_crtc_for_plane(dev, plane); | |
3490ea5d | 1304 | if (!intel_crtc_active(crtc)) |
b445e3b0 ED |
1305 | return false; |
1306 | ||
1307 | clock = crtc->mode.clock; /* VESA DOT Clock */ | |
1308 | pixel_size = crtc->fb->bits_per_pixel / 8; /* BPP */ | |
1309 | ||
1310 | entries = (clock / 1000) * pixel_size; | |
1311 | *plane_prec_mult = (entries > 256) ? | |
1312 | DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16; | |
1313 | *plane_dl = (64 * (*plane_prec_mult) * 4) / ((clock / 1000) * | |
1314 | pixel_size); | |
1315 | ||
1316 | entries = (clock / 1000) * 4; /* BPP is always 4 for cursor */ | |
1317 | *cursor_prec_mult = (entries > 256) ? | |
1318 | DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16; | |
1319 | *cursor_dl = (64 * (*cursor_prec_mult) * 4) / ((clock / 1000) * 4); | |
1320 | ||
1321 | return true; | |
1322 | } | |
1323 | ||
1324 | /* | |
1325 | * Update drain latency registers of memory arbiter | |
1326 | * | |
1327 | * Valleyview SoC has a new memory arbiter and needs drain latency registers | |
1328 | * to be programmed. Each plane has a drain latency multiplier and a drain | |
1329 | * latency value. | |
1330 | */ | |
1331 | ||
1332 | static void vlv_update_drain_latency(struct drm_device *dev) | |
1333 | { | |
1334 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1335 | int planea_prec, planea_dl, planeb_prec, planeb_dl; | |
1336 | int cursora_prec, cursora_dl, cursorb_prec, cursorb_dl; | |
1337 | int plane_prec_mult, cursor_prec_mult; /* Precision multiplier is | |
1338 | either 16 or 32 */ | |
1339 | ||
1340 | /* For plane A, Cursor A */ | |
1341 | if (vlv_compute_drain_latency(dev, 0, &plane_prec_mult, &planea_dl, | |
1342 | &cursor_prec_mult, &cursora_dl)) { | |
1343 | cursora_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ? | |
1344 | DDL_CURSORA_PRECISION_32 : DDL_CURSORA_PRECISION_16; | |
1345 | planea_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ? | |
1346 | DDL_PLANEA_PRECISION_32 : DDL_PLANEA_PRECISION_16; | |
1347 | ||
1348 | I915_WRITE(VLV_DDL1, cursora_prec | | |
1349 | (cursora_dl << DDL_CURSORA_SHIFT) | | |
1350 | planea_prec | planea_dl); | |
1351 | } | |
1352 | ||
1353 | /* For plane B, Cursor B */ | |
1354 | if (vlv_compute_drain_latency(dev, 1, &plane_prec_mult, &planeb_dl, | |
1355 | &cursor_prec_mult, &cursorb_dl)) { | |
1356 | cursorb_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ? | |
1357 | DDL_CURSORB_PRECISION_32 : DDL_CURSORB_PRECISION_16; | |
1358 | planeb_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ? | |
1359 | DDL_PLANEB_PRECISION_32 : DDL_PLANEB_PRECISION_16; | |
1360 | ||
1361 | I915_WRITE(VLV_DDL2, cursorb_prec | | |
1362 | (cursorb_dl << DDL_CURSORB_SHIFT) | | |
1363 | planeb_prec | planeb_dl); | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | #define single_plane_enabled(mask) is_power_of_2(mask) | |
1368 | ||
46ba614c | 1369 | static void valleyview_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1370 | { |
46ba614c | 1371 | struct drm_device *dev = crtc->dev; |
b445e3b0 ED |
1372 | static const int sr_latency_ns = 12000; |
1373 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1374 | int planea_wm, planeb_wm, cursora_wm, cursorb_wm; | |
1375 | int plane_sr, cursor_sr; | |
af6c4575 | 1376 | int ignore_plane_sr, ignore_cursor_sr; |
b445e3b0 ED |
1377 | unsigned int enabled = 0; |
1378 | ||
1379 | vlv_update_drain_latency(dev); | |
1380 | ||
51cea1f4 | 1381 | if (g4x_compute_wm0(dev, PIPE_A, |
b445e3b0 ED |
1382 | &valleyview_wm_info, latency_ns, |
1383 | &valleyview_cursor_wm_info, latency_ns, | |
1384 | &planea_wm, &cursora_wm)) | |
51cea1f4 | 1385 | enabled |= 1 << PIPE_A; |
b445e3b0 | 1386 | |
51cea1f4 | 1387 | if (g4x_compute_wm0(dev, PIPE_B, |
b445e3b0 ED |
1388 | &valleyview_wm_info, latency_ns, |
1389 | &valleyview_cursor_wm_info, latency_ns, | |
1390 | &planeb_wm, &cursorb_wm)) | |
51cea1f4 | 1391 | enabled |= 1 << PIPE_B; |
b445e3b0 | 1392 | |
b445e3b0 ED |
1393 | if (single_plane_enabled(enabled) && |
1394 | g4x_compute_srwm(dev, ffs(enabled) - 1, | |
1395 | sr_latency_ns, | |
1396 | &valleyview_wm_info, | |
1397 | &valleyview_cursor_wm_info, | |
af6c4575 CW |
1398 | &plane_sr, &ignore_cursor_sr) && |
1399 | g4x_compute_srwm(dev, ffs(enabled) - 1, | |
1400 | 2*sr_latency_ns, | |
1401 | &valleyview_wm_info, | |
1402 | &valleyview_cursor_wm_info, | |
52bd02d8 | 1403 | &ignore_plane_sr, &cursor_sr)) { |
b445e3b0 | 1404 | I915_WRITE(FW_BLC_SELF_VLV, FW_CSPWRDWNEN); |
52bd02d8 | 1405 | } else { |
b445e3b0 ED |
1406 | I915_WRITE(FW_BLC_SELF_VLV, |
1407 | I915_READ(FW_BLC_SELF_VLV) & ~FW_CSPWRDWNEN); | |
52bd02d8 CW |
1408 | plane_sr = cursor_sr = 0; |
1409 | } | |
b445e3b0 ED |
1410 | |
1411 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n", | |
1412 | planea_wm, cursora_wm, | |
1413 | planeb_wm, cursorb_wm, | |
1414 | plane_sr, cursor_sr); | |
1415 | ||
1416 | I915_WRITE(DSPFW1, | |
1417 | (plane_sr << DSPFW_SR_SHIFT) | | |
1418 | (cursorb_wm << DSPFW_CURSORB_SHIFT) | | |
1419 | (planeb_wm << DSPFW_PLANEB_SHIFT) | | |
1420 | planea_wm); | |
1421 | I915_WRITE(DSPFW2, | |
8c919b28 | 1422 | (I915_READ(DSPFW2) & ~DSPFW_CURSORA_MASK) | |
b445e3b0 ED |
1423 | (cursora_wm << DSPFW_CURSORA_SHIFT)); |
1424 | I915_WRITE(DSPFW3, | |
8c919b28 CW |
1425 | (I915_READ(DSPFW3) & ~DSPFW_CURSOR_SR_MASK) | |
1426 | (cursor_sr << DSPFW_CURSOR_SR_SHIFT)); | |
b445e3b0 ED |
1427 | } |
1428 | ||
46ba614c | 1429 | static void g4x_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1430 | { |
46ba614c | 1431 | struct drm_device *dev = crtc->dev; |
b445e3b0 ED |
1432 | static const int sr_latency_ns = 12000; |
1433 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1434 | int planea_wm, planeb_wm, cursora_wm, cursorb_wm; | |
1435 | int plane_sr, cursor_sr; | |
1436 | unsigned int enabled = 0; | |
1437 | ||
51cea1f4 | 1438 | if (g4x_compute_wm0(dev, PIPE_A, |
b445e3b0 ED |
1439 | &g4x_wm_info, latency_ns, |
1440 | &g4x_cursor_wm_info, latency_ns, | |
1441 | &planea_wm, &cursora_wm)) | |
51cea1f4 | 1442 | enabled |= 1 << PIPE_A; |
b445e3b0 | 1443 | |
51cea1f4 | 1444 | if (g4x_compute_wm0(dev, PIPE_B, |
b445e3b0 ED |
1445 | &g4x_wm_info, latency_ns, |
1446 | &g4x_cursor_wm_info, latency_ns, | |
1447 | &planeb_wm, &cursorb_wm)) | |
51cea1f4 | 1448 | enabled |= 1 << PIPE_B; |
b445e3b0 | 1449 | |
b445e3b0 ED |
1450 | if (single_plane_enabled(enabled) && |
1451 | g4x_compute_srwm(dev, ffs(enabled) - 1, | |
1452 | sr_latency_ns, | |
1453 | &g4x_wm_info, | |
1454 | &g4x_cursor_wm_info, | |
52bd02d8 | 1455 | &plane_sr, &cursor_sr)) { |
b445e3b0 | 1456 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN); |
52bd02d8 | 1457 | } else { |
b445e3b0 ED |
1458 | I915_WRITE(FW_BLC_SELF, |
1459 | I915_READ(FW_BLC_SELF) & ~FW_BLC_SELF_EN); | |
52bd02d8 CW |
1460 | plane_sr = cursor_sr = 0; |
1461 | } | |
b445e3b0 ED |
1462 | |
1463 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n", | |
1464 | planea_wm, cursora_wm, | |
1465 | planeb_wm, cursorb_wm, | |
1466 | plane_sr, cursor_sr); | |
1467 | ||
1468 | I915_WRITE(DSPFW1, | |
1469 | (plane_sr << DSPFW_SR_SHIFT) | | |
1470 | (cursorb_wm << DSPFW_CURSORB_SHIFT) | | |
1471 | (planeb_wm << DSPFW_PLANEB_SHIFT) | | |
1472 | planea_wm); | |
1473 | I915_WRITE(DSPFW2, | |
8c919b28 | 1474 | (I915_READ(DSPFW2) & ~DSPFW_CURSORA_MASK) | |
b445e3b0 ED |
1475 | (cursora_wm << DSPFW_CURSORA_SHIFT)); |
1476 | /* HPLL off in SR has some issues on G4x... disable it */ | |
1477 | I915_WRITE(DSPFW3, | |
8c919b28 | 1478 | (I915_READ(DSPFW3) & ~(DSPFW_HPLL_SR_EN | DSPFW_CURSOR_SR_MASK)) | |
b445e3b0 ED |
1479 | (cursor_sr << DSPFW_CURSOR_SR_SHIFT)); |
1480 | } | |
1481 | ||
46ba614c | 1482 | static void i965_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1483 | { |
46ba614c | 1484 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1485 | struct drm_i915_private *dev_priv = dev->dev_private; |
1486 | struct drm_crtc *crtc; | |
1487 | int srwm = 1; | |
1488 | int cursor_sr = 16; | |
1489 | ||
1490 | /* Calc sr entries for one plane configs */ | |
1491 | crtc = single_enabled_crtc(dev); | |
1492 | if (crtc) { | |
1493 | /* self-refresh has much higher latency */ | |
1494 | static const int sr_latency_ns = 12000; | |
1495 | int clock = crtc->mode.clock; | |
1496 | int htotal = crtc->mode.htotal; | |
1497 | int hdisplay = crtc->mode.hdisplay; | |
1498 | int pixel_size = crtc->fb->bits_per_pixel / 8; | |
1499 | unsigned long line_time_us; | |
1500 | int entries; | |
1501 | ||
1502 | line_time_us = ((htotal * 1000) / clock); | |
1503 | ||
1504 | /* Use ns/us then divide to preserve precision */ | |
1505 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
1506 | pixel_size * hdisplay; | |
1507 | entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE); | |
1508 | srwm = I965_FIFO_SIZE - entries; | |
1509 | if (srwm < 0) | |
1510 | srwm = 1; | |
1511 | srwm &= 0x1ff; | |
1512 | DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n", | |
1513 | entries, srwm); | |
1514 | ||
1515 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
1516 | pixel_size * 64; | |
1517 | entries = DIV_ROUND_UP(entries, | |
1518 | i965_cursor_wm_info.cacheline_size); | |
1519 | cursor_sr = i965_cursor_wm_info.fifo_size - | |
1520 | (entries + i965_cursor_wm_info.guard_size); | |
1521 | ||
1522 | if (cursor_sr > i965_cursor_wm_info.max_wm) | |
1523 | cursor_sr = i965_cursor_wm_info.max_wm; | |
1524 | ||
1525 | DRM_DEBUG_KMS("self-refresh watermark: display plane %d " | |
1526 | "cursor %d\n", srwm, cursor_sr); | |
1527 | ||
1528 | if (IS_CRESTLINE(dev)) | |
1529 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN); | |
1530 | } else { | |
1531 | /* Turn off self refresh if both pipes are enabled */ | |
1532 | if (IS_CRESTLINE(dev)) | |
1533 | I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF) | |
1534 | & ~FW_BLC_SELF_EN); | |
1535 | } | |
1536 | ||
1537 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n", | |
1538 | srwm); | |
1539 | ||
1540 | /* 965 has limitations... */ | |
1541 | I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) | | |
1542 | (8 << 16) | (8 << 8) | (8 << 0)); | |
1543 | I915_WRITE(DSPFW2, (8 << 8) | (8 << 0)); | |
1544 | /* update cursor SR watermark */ | |
1545 | I915_WRITE(DSPFW3, (cursor_sr << DSPFW_CURSOR_SR_SHIFT)); | |
1546 | } | |
1547 | ||
46ba614c | 1548 | static void i9xx_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1549 | { |
46ba614c | 1550 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1551 | struct drm_i915_private *dev_priv = dev->dev_private; |
1552 | const struct intel_watermark_params *wm_info; | |
1553 | uint32_t fwater_lo; | |
1554 | uint32_t fwater_hi; | |
1555 | int cwm, srwm = 1; | |
1556 | int fifo_size; | |
1557 | int planea_wm, planeb_wm; | |
1558 | struct drm_crtc *crtc, *enabled = NULL; | |
1559 | ||
1560 | if (IS_I945GM(dev)) | |
1561 | wm_info = &i945_wm_info; | |
1562 | else if (!IS_GEN2(dev)) | |
1563 | wm_info = &i915_wm_info; | |
1564 | else | |
1565 | wm_info = &i855_wm_info; | |
1566 | ||
1567 | fifo_size = dev_priv->display.get_fifo_size(dev, 0); | |
1568 | crtc = intel_get_crtc_for_plane(dev, 0); | |
3490ea5d | 1569 | if (intel_crtc_active(crtc)) { |
b9e0bda3 CW |
1570 | int cpp = crtc->fb->bits_per_pixel / 8; |
1571 | if (IS_GEN2(dev)) | |
1572 | cpp = 4; | |
1573 | ||
b445e3b0 | 1574 | planea_wm = intel_calculate_wm(crtc->mode.clock, |
b9e0bda3 | 1575 | wm_info, fifo_size, cpp, |
b445e3b0 ED |
1576 | latency_ns); |
1577 | enabled = crtc; | |
1578 | } else | |
1579 | planea_wm = fifo_size - wm_info->guard_size; | |
1580 | ||
1581 | fifo_size = dev_priv->display.get_fifo_size(dev, 1); | |
1582 | crtc = intel_get_crtc_for_plane(dev, 1); | |
3490ea5d | 1583 | if (intel_crtc_active(crtc)) { |
b9e0bda3 CW |
1584 | int cpp = crtc->fb->bits_per_pixel / 8; |
1585 | if (IS_GEN2(dev)) | |
1586 | cpp = 4; | |
1587 | ||
b445e3b0 | 1588 | planeb_wm = intel_calculate_wm(crtc->mode.clock, |
b9e0bda3 | 1589 | wm_info, fifo_size, cpp, |
b445e3b0 ED |
1590 | latency_ns); |
1591 | if (enabled == NULL) | |
1592 | enabled = crtc; | |
1593 | else | |
1594 | enabled = NULL; | |
1595 | } else | |
1596 | planeb_wm = fifo_size - wm_info->guard_size; | |
1597 | ||
1598 | DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm); | |
1599 | ||
1600 | /* | |
1601 | * Overlay gets an aggressive default since video jitter is bad. | |
1602 | */ | |
1603 | cwm = 2; | |
1604 | ||
1605 | /* Play safe and disable self-refresh before adjusting watermarks. */ | |
1606 | if (IS_I945G(dev) || IS_I945GM(dev)) | |
1607 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | 0); | |
1608 | else if (IS_I915GM(dev)) | |
1609 | I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN); | |
1610 | ||
1611 | /* Calc sr entries for one plane configs */ | |
1612 | if (HAS_FW_BLC(dev) && enabled) { | |
1613 | /* self-refresh has much higher latency */ | |
1614 | static const int sr_latency_ns = 6000; | |
1615 | int clock = enabled->mode.clock; | |
1616 | int htotal = enabled->mode.htotal; | |
1617 | int hdisplay = enabled->mode.hdisplay; | |
1618 | int pixel_size = enabled->fb->bits_per_pixel / 8; | |
1619 | unsigned long line_time_us; | |
1620 | int entries; | |
1621 | ||
1622 | line_time_us = (htotal * 1000) / clock; | |
1623 | ||
1624 | /* Use ns/us then divide to preserve precision */ | |
1625 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
1626 | pixel_size * hdisplay; | |
1627 | entries = DIV_ROUND_UP(entries, wm_info->cacheline_size); | |
1628 | DRM_DEBUG_KMS("self-refresh entries: %d\n", entries); | |
1629 | srwm = wm_info->fifo_size - entries; | |
1630 | if (srwm < 0) | |
1631 | srwm = 1; | |
1632 | ||
1633 | if (IS_I945G(dev) || IS_I945GM(dev)) | |
1634 | I915_WRITE(FW_BLC_SELF, | |
1635 | FW_BLC_SELF_FIFO_MASK | (srwm & 0xff)); | |
1636 | else if (IS_I915GM(dev)) | |
1637 | I915_WRITE(FW_BLC_SELF, srwm & 0x3f); | |
1638 | } | |
1639 | ||
1640 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n", | |
1641 | planea_wm, planeb_wm, cwm, srwm); | |
1642 | ||
1643 | fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f); | |
1644 | fwater_hi = (cwm & 0x1f); | |
1645 | ||
1646 | /* Set request length to 8 cachelines per fetch */ | |
1647 | fwater_lo = fwater_lo | (1 << 24) | (1 << 8); | |
1648 | fwater_hi = fwater_hi | (1 << 8); | |
1649 | ||
1650 | I915_WRITE(FW_BLC, fwater_lo); | |
1651 | I915_WRITE(FW_BLC2, fwater_hi); | |
1652 | ||
1653 | if (HAS_FW_BLC(dev)) { | |
1654 | if (enabled) { | |
1655 | if (IS_I945G(dev) || IS_I945GM(dev)) | |
1656 | I915_WRITE(FW_BLC_SELF, | |
1657 | FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN); | |
1658 | else if (IS_I915GM(dev)) | |
1659 | I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN); | |
1660 | DRM_DEBUG_KMS("memory self refresh enabled\n"); | |
1661 | } else | |
1662 | DRM_DEBUG_KMS("memory self refresh disabled\n"); | |
1663 | } | |
1664 | } | |
1665 | ||
46ba614c | 1666 | static void i830_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1667 | { |
46ba614c | 1668 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1669 | struct drm_i915_private *dev_priv = dev->dev_private; |
1670 | struct drm_crtc *crtc; | |
1671 | uint32_t fwater_lo; | |
1672 | int planea_wm; | |
1673 | ||
1674 | crtc = single_enabled_crtc(dev); | |
1675 | if (crtc == NULL) | |
1676 | return; | |
1677 | ||
1678 | planea_wm = intel_calculate_wm(crtc->mode.clock, &i830_wm_info, | |
1679 | dev_priv->display.get_fifo_size(dev, 0), | |
b9e0bda3 | 1680 | 4, latency_ns); |
b445e3b0 ED |
1681 | fwater_lo = I915_READ(FW_BLC) & ~0xfff; |
1682 | fwater_lo |= (3<<8) | planea_wm; | |
1683 | ||
1684 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm); | |
1685 | ||
1686 | I915_WRITE(FW_BLC, fwater_lo); | |
1687 | } | |
1688 | ||
b445e3b0 ED |
1689 | /* |
1690 | * Check the wm result. | |
1691 | * | |
1692 | * If any calculated watermark values is larger than the maximum value that | |
1693 | * can be programmed into the associated watermark register, that watermark | |
1694 | * must be disabled. | |
1695 | */ | |
1696 | static bool ironlake_check_srwm(struct drm_device *dev, int level, | |
1697 | int fbc_wm, int display_wm, int cursor_wm, | |
1698 | const struct intel_watermark_params *display, | |
1699 | const struct intel_watermark_params *cursor) | |
1700 | { | |
1701 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1702 | ||
1703 | DRM_DEBUG_KMS("watermark %d: display plane %d, fbc lines %d," | |
1704 | " cursor %d\n", level, display_wm, fbc_wm, cursor_wm); | |
1705 | ||
1706 | if (fbc_wm > SNB_FBC_MAX_SRWM) { | |
1707 | DRM_DEBUG_KMS("fbc watermark(%d) is too large(%d), disabling wm%d+\n", | |
1708 | fbc_wm, SNB_FBC_MAX_SRWM, level); | |
1709 | ||
1710 | /* fbc has it's own way to disable FBC WM */ | |
1711 | I915_WRITE(DISP_ARB_CTL, | |
1712 | I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS); | |
1713 | return false; | |
615aaa5f VS |
1714 | } else if (INTEL_INFO(dev)->gen >= 6) { |
1715 | /* enable FBC WM (except on ILK, where it must remain off) */ | |
1716 | I915_WRITE(DISP_ARB_CTL, | |
1717 | I915_READ(DISP_ARB_CTL) & ~DISP_FBC_WM_DIS); | |
b445e3b0 ED |
1718 | } |
1719 | ||
1720 | if (display_wm > display->max_wm) { | |
1721 | DRM_DEBUG_KMS("display watermark(%d) is too large(%d), disabling wm%d+\n", | |
1722 | display_wm, SNB_DISPLAY_MAX_SRWM, level); | |
1723 | return false; | |
1724 | } | |
1725 | ||
1726 | if (cursor_wm > cursor->max_wm) { | |
1727 | DRM_DEBUG_KMS("cursor watermark(%d) is too large(%d), disabling wm%d+\n", | |
1728 | cursor_wm, SNB_CURSOR_MAX_SRWM, level); | |
1729 | return false; | |
1730 | } | |
1731 | ||
1732 | if (!(fbc_wm || display_wm || cursor_wm)) { | |
1733 | DRM_DEBUG_KMS("latency %d is 0, disabling wm%d+\n", level, level); | |
1734 | return false; | |
1735 | } | |
1736 | ||
1737 | return true; | |
1738 | } | |
1739 | ||
1740 | /* | |
1741 | * Compute watermark values of WM[1-3], | |
1742 | */ | |
1743 | static bool ironlake_compute_srwm(struct drm_device *dev, int level, int plane, | |
1744 | int latency_ns, | |
1745 | const struct intel_watermark_params *display, | |
1746 | const struct intel_watermark_params *cursor, | |
1747 | int *fbc_wm, int *display_wm, int *cursor_wm) | |
1748 | { | |
1749 | struct drm_crtc *crtc; | |
1750 | unsigned long line_time_us; | |
1751 | int hdisplay, htotal, pixel_size, clock; | |
1752 | int line_count, line_size; | |
1753 | int small, large; | |
1754 | int entries; | |
1755 | ||
1756 | if (!latency_ns) { | |
1757 | *fbc_wm = *display_wm = *cursor_wm = 0; | |
1758 | return false; | |
1759 | } | |
1760 | ||
1761 | crtc = intel_get_crtc_for_plane(dev, plane); | |
1762 | hdisplay = crtc->mode.hdisplay; | |
1763 | htotal = crtc->mode.htotal; | |
1764 | clock = crtc->mode.clock; | |
1765 | pixel_size = crtc->fb->bits_per_pixel / 8; | |
1766 | ||
1767 | line_time_us = (htotal * 1000) / clock; | |
1768 | line_count = (latency_ns / line_time_us + 1000) / 1000; | |
1769 | line_size = hdisplay * pixel_size; | |
1770 | ||
1771 | /* Use the minimum of the small and large buffer method for primary */ | |
1772 | small = ((clock * pixel_size / 1000) * latency_ns) / 1000; | |
1773 | large = line_count * line_size; | |
1774 | ||
1775 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); | |
1776 | *display_wm = entries + display->guard_size; | |
1777 | ||
1778 | /* | |
1779 | * Spec says: | |
1780 | * FBC WM = ((Final Primary WM * 64) / number of bytes per line) + 2 | |
1781 | */ | |
1782 | *fbc_wm = DIV_ROUND_UP(*display_wm * 64, line_size) + 2; | |
1783 | ||
1784 | /* calculate the self-refresh watermark for display cursor */ | |
1785 | entries = line_count * pixel_size * 64; | |
1786 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); | |
1787 | *cursor_wm = entries + cursor->guard_size; | |
1788 | ||
1789 | return ironlake_check_srwm(dev, level, | |
1790 | *fbc_wm, *display_wm, *cursor_wm, | |
1791 | display, cursor); | |
1792 | } | |
1793 | ||
46ba614c | 1794 | static void ironlake_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1795 | { |
46ba614c | 1796 | struct drm_device *dev = crtc->dev; |
b445e3b0 ED |
1797 | struct drm_i915_private *dev_priv = dev->dev_private; |
1798 | int fbc_wm, plane_wm, cursor_wm; | |
1799 | unsigned int enabled; | |
1800 | ||
1801 | enabled = 0; | |
51cea1f4 | 1802 | if (g4x_compute_wm0(dev, PIPE_A, |
b445e3b0 | 1803 | &ironlake_display_wm_info, |
b0aea5dc | 1804 | dev_priv->wm.pri_latency[0] * 100, |
b445e3b0 | 1805 | &ironlake_cursor_wm_info, |
b0aea5dc | 1806 | dev_priv->wm.cur_latency[0] * 100, |
b445e3b0 ED |
1807 | &plane_wm, &cursor_wm)) { |
1808 | I915_WRITE(WM0_PIPEA_ILK, | |
1809 | (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm); | |
1810 | DRM_DEBUG_KMS("FIFO watermarks For pipe A -" | |
1811 | " plane %d, " "cursor: %d\n", | |
1812 | plane_wm, cursor_wm); | |
51cea1f4 | 1813 | enabled |= 1 << PIPE_A; |
b445e3b0 ED |
1814 | } |
1815 | ||
51cea1f4 | 1816 | if (g4x_compute_wm0(dev, PIPE_B, |
b445e3b0 | 1817 | &ironlake_display_wm_info, |
b0aea5dc | 1818 | dev_priv->wm.pri_latency[0] * 100, |
b445e3b0 | 1819 | &ironlake_cursor_wm_info, |
b0aea5dc | 1820 | dev_priv->wm.cur_latency[0] * 100, |
b445e3b0 ED |
1821 | &plane_wm, &cursor_wm)) { |
1822 | I915_WRITE(WM0_PIPEB_ILK, | |
1823 | (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm); | |
1824 | DRM_DEBUG_KMS("FIFO watermarks For pipe B -" | |
1825 | " plane %d, cursor: %d\n", | |
1826 | plane_wm, cursor_wm); | |
51cea1f4 | 1827 | enabled |= 1 << PIPE_B; |
b445e3b0 ED |
1828 | } |
1829 | ||
1830 | /* | |
1831 | * Calculate and update the self-refresh watermark only when one | |
1832 | * display plane is used. | |
1833 | */ | |
1834 | I915_WRITE(WM3_LP_ILK, 0); | |
1835 | I915_WRITE(WM2_LP_ILK, 0); | |
1836 | I915_WRITE(WM1_LP_ILK, 0); | |
1837 | ||
1838 | if (!single_plane_enabled(enabled)) | |
1839 | return; | |
1840 | enabled = ffs(enabled) - 1; | |
1841 | ||
1842 | /* WM1 */ | |
1843 | if (!ironlake_compute_srwm(dev, 1, enabled, | |
b0aea5dc | 1844 | dev_priv->wm.pri_latency[1] * 500, |
b445e3b0 ED |
1845 | &ironlake_display_srwm_info, |
1846 | &ironlake_cursor_srwm_info, | |
1847 | &fbc_wm, &plane_wm, &cursor_wm)) | |
1848 | return; | |
1849 | ||
1850 | I915_WRITE(WM1_LP_ILK, | |
1851 | WM1_LP_SR_EN | | |
b0aea5dc | 1852 | (dev_priv->wm.pri_latency[1] << WM1_LP_LATENCY_SHIFT) | |
b445e3b0 ED |
1853 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
1854 | (plane_wm << WM1_LP_SR_SHIFT) | | |
1855 | cursor_wm); | |
1856 | ||
1857 | /* WM2 */ | |
1858 | if (!ironlake_compute_srwm(dev, 2, enabled, | |
b0aea5dc | 1859 | dev_priv->wm.pri_latency[2] * 500, |
b445e3b0 ED |
1860 | &ironlake_display_srwm_info, |
1861 | &ironlake_cursor_srwm_info, | |
1862 | &fbc_wm, &plane_wm, &cursor_wm)) | |
1863 | return; | |
1864 | ||
1865 | I915_WRITE(WM2_LP_ILK, | |
1866 | WM2_LP_EN | | |
b0aea5dc | 1867 | (dev_priv->wm.pri_latency[2] << WM1_LP_LATENCY_SHIFT) | |
b445e3b0 ED |
1868 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
1869 | (plane_wm << WM1_LP_SR_SHIFT) | | |
1870 | cursor_wm); | |
1871 | ||
1872 | /* | |
1873 | * WM3 is unsupported on ILK, probably because we don't have latency | |
1874 | * data for that power state | |
1875 | */ | |
1876 | } | |
1877 | ||
46ba614c | 1878 | static void sandybridge_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1879 | { |
46ba614c | 1880 | struct drm_device *dev = crtc->dev; |
b445e3b0 | 1881 | struct drm_i915_private *dev_priv = dev->dev_private; |
b0aea5dc | 1882 | int latency = dev_priv->wm.pri_latency[0] * 100; /* In unit 0.1us */ |
b445e3b0 ED |
1883 | u32 val; |
1884 | int fbc_wm, plane_wm, cursor_wm; | |
1885 | unsigned int enabled; | |
1886 | ||
1887 | enabled = 0; | |
51cea1f4 | 1888 | if (g4x_compute_wm0(dev, PIPE_A, |
b445e3b0 ED |
1889 | &sandybridge_display_wm_info, latency, |
1890 | &sandybridge_cursor_wm_info, latency, | |
1891 | &plane_wm, &cursor_wm)) { | |
1892 | val = I915_READ(WM0_PIPEA_ILK); | |
1893 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); | |
1894 | I915_WRITE(WM0_PIPEA_ILK, val | | |
1895 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); | |
1896 | DRM_DEBUG_KMS("FIFO watermarks For pipe A -" | |
1897 | " plane %d, " "cursor: %d\n", | |
1898 | plane_wm, cursor_wm); | |
51cea1f4 | 1899 | enabled |= 1 << PIPE_A; |
b445e3b0 ED |
1900 | } |
1901 | ||
51cea1f4 | 1902 | if (g4x_compute_wm0(dev, PIPE_B, |
b445e3b0 ED |
1903 | &sandybridge_display_wm_info, latency, |
1904 | &sandybridge_cursor_wm_info, latency, | |
1905 | &plane_wm, &cursor_wm)) { | |
1906 | val = I915_READ(WM0_PIPEB_ILK); | |
1907 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); | |
1908 | I915_WRITE(WM0_PIPEB_ILK, val | | |
1909 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); | |
1910 | DRM_DEBUG_KMS("FIFO watermarks For pipe B -" | |
1911 | " plane %d, cursor: %d\n", | |
1912 | plane_wm, cursor_wm); | |
51cea1f4 | 1913 | enabled |= 1 << PIPE_B; |
b445e3b0 ED |
1914 | } |
1915 | ||
c43d0188 CW |
1916 | /* |
1917 | * Calculate and update the self-refresh watermark only when one | |
1918 | * display plane is used. | |
1919 | * | |
1920 | * SNB support 3 levels of watermark. | |
1921 | * | |
1922 | * WM1/WM2/WM2 watermarks have to be enabled in the ascending order, | |
1923 | * and disabled in the descending order | |
1924 | * | |
1925 | */ | |
1926 | I915_WRITE(WM3_LP_ILK, 0); | |
1927 | I915_WRITE(WM2_LP_ILK, 0); | |
1928 | I915_WRITE(WM1_LP_ILK, 0); | |
1929 | ||
1930 | if (!single_plane_enabled(enabled) || | |
1931 | dev_priv->sprite_scaling_enabled) | |
1932 | return; | |
1933 | enabled = ffs(enabled) - 1; | |
1934 | ||
1935 | /* WM1 */ | |
1936 | if (!ironlake_compute_srwm(dev, 1, enabled, | |
b0aea5dc | 1937 | dev_priv->wm.pri_latency[1] * 500, |
c43d0188 CW |
1938 | &sandybridge_display_srwm_info, |
1939 | &sandybridge_cursor_srwm_info, | |
1940 | &fbc_wm, &plane_wm, &cursor_wm)) | |
1941 | return; | |
1942 | ||
1943 | I915_WRITE(WM1_LP_ILK, | |
1944 | WM1_LP_SR_EN | | |
b0aea5dc | 1945 | (dev_priv->wm.pri_latency[1] << WM1_LP_LATENCY_SHIFT) | |
c43d0188 CW |
1946 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
1947 | (plane_wm << WM1_LP_SR_SHIFT) | | |
1948 | cursor_wm); | |
1949 | ||
1950 | /* WM2 */ | |
1951 | if (!ironlake_compute_srwm(dev, 2, enabled, | |
b0aea5dc | 1952 | dev_priv->wm.pri_latency[2] * 500, |
c43d0188 CW |
1953 | &sandybridge_display_srwm_info, |
1954 | &sandybridge_cursor_srwm_info, | |
1955 | &fbc_wm, &plane_wm, &cursor_wm)) | |
1956 | return; | |
1957 | ||
1958 | I915_WRITE(WM2_LP_ILK, | |
1959 | WM2_LP_EN | | |
b0aea5dc | 1960 | (dev_priv->wm.pri_latency[2] << WM1_LP_LATENCY_SHIFT) | |
c43d0188 CW |
1961 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
1962 | (plane_wm << WM1_LP_SR_SHIFT) | | |
1963 | cursor_wm); | |
1964 | ||
1965 | /* WM3 */ | |
1966 | if (!ironlake_compute_srwm(dev, 3, enabled, | |
b0aea5dc | 1967 | dev_priv->wm.pri_latency[3] * 500, |
c43d0188 CW |
1968 | &sandybridge_display_srwm_info, |
1969 | &sandybridge_cursor_srwm_info, | |
1970 | &fbc_wm, &plane_wm, &cursor_wm)) | |
1971 | return; | |
1972 | ||
1973 | I915_WRITE(WM3_LP_ILK, | |
1974 | WM3_LP_EN | | |
b0aea5dc | 1975 | (dev_priv->wm.pri_latency[3] << WM1_LP_LATENCY_SHIFT) | |
c43d0188 CW |
1976 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
1977 | (plane_wm << WM1_LP_SR_SHIFT) | | |
1978 | cursor_wm); | |
1979 | } | |
1980 | ||
46ba614c | 1981 | static void ivybridge_update_wm(struct drm_crtc *crtc) |
c43d0188 | 1982 | { |
46ba614c | 1983 | struct drm_device *dev = crtc->dev; |
c43d0188 | 1984 | struct drm_i915_private *dev_priv = dev->dev_private; |
b0aea5dc | 1985 | int latency = dev_priv->wm.pri_latency[0] * 100; /* In unit 0.1us */ |
c43d0188 CW |
1986 | u32 val; |
1987 | int fbc_wm, plane_wm, cursor_wm; | |
1988 | int ignore_fbc_wm, ignore_plane_wm, ignore_cursor_wm; | |
1989 | unsigned int enabled; | |
1990 | ||
1991 | enabled = 0; | |
51cea1f4 | 1992 | if (g4x_compute_wm0(dev, PIPE_A, |
c43d0188 CW |
1993 | &sandybridge_display_wm_info, latency, |
1994 | &sandybridge_cursor_wm_info, latency, | |
1995 | &plane_wm, &cursor_wm)) { | |
1996 | val = I915_READ(WM0_PIPEA_ILK); | |
1997 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); | |
1998 | I915_WRITE(WM0_PIPEA_ILK, val | | |
1999 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); | |
2000 | DRM_DEBUG_KMS("FIFO watermarks For pipe A -" | |
2001 | " plane %d, " "cursor: %d\n", | |
2002 | plane_wm, cursor_wm); | |
51cea1f4 | 2003 | enabled |= 1 << PIPE_A; |
c43d0188 CW |
2004 | } |
2005 | ||
51cea1f4 | 2006 | if (g4x_compute_wm0(dev, PIPE_B, |
c43d0188 CW |
2007 | &sandybridge_display_wm_info, latency, |
2008 | &sandybridge_cursor_wm_info, latency, | |
2009 | &plane_wm, &cursor_wm)) { | |
2010 | val = I915_READ(WM0_PIPEB_ILK); | |
2011 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); | |
2012 | I915_WRITE(WM0_PIPEB_ILK, val | | |
2013 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); | |
2014 | DRM_DEBUG_KMS("FIFO watermarks For pipe B -" | |
2015 | " plane %d, cursor: %d\n", | |
2016 | plane_wm, cursor_wm); | |
51cea1f4 | 2017 | enabled |= 1 << PIPE_B; |
c43d0188 CW |
2018 | } |
2019 | ||
51cea1f4 | 2020 | if (g4x_compute_wm0(dev, PIPE_C, |
b445e3b0 ED |
2021 | &sandybridge_display_wm_info, latency, |
2022 | &sandybridge_cursor_wm_info, latency, | |
2023 | &plane_wm, &cursor_wm)) { | |
2024 | val = I915_READ(WM0_PIPEC_IVB); | |
2025 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); | |
2026 | I915_WRITE(WM0_PIPEC_IVB, val | | |
2027 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); | |
2028 | DRM_DEBUG_KMS("FIFO watermarks For pipe C -" | |
2029 | " plane %d, cursor: %d\n", | |
2030 | plane_wm, cursor_wm); | |
51cea1f4 | 2031 | enabled |= 1 << PIPE_C; |
b445e3b0 ED |
2032 | } |
2033 | ||
2034 | /* | |
2035 | * Calculate and update the self-refresh watermark only when one | |
2036 | * display plane is used. | |
2037 | * | |
2038 | * SNB support 3 levels of watermark. | |
2039 | * | |
2040 | * WM1/WM2/WM2 watermarks have to be enabled in the ascending order, | |
2041 | * and disabled in the descending order | |
2042 | * | |
2043 | */ | |
2044 | I915_WRITE(WM3_LP_ILK, 0); | |
2045 | I915_WRITE(WM2_LP_ILK, 0); | |
2046 | I915_WRITE(WM1_LP_ILK, 0); | |
2047 | ||
2048 | if (!single_plane_enabled(enabled) || | |
2049 | dev_priv->sprite_scaling_enabled) | |
2050 | return; | |
2051 | enabled = ffs(enabled) - 1; | |
2052 | ||
2053 | /* WM1 */ | |
2054 | if (!ironlake_compute_srwm(dev, 1, enabled, | |
b0aea5dc | 2055 | dev_priv->wm.pri_latency[1] * 500, |
b445e3b0 ED |
2056 | &sandybridge_display_srwm_info, |
2057 | &sandybridge_cursor_srwm_info, | |
2058 | &fbc_wm, &plane_wm, &cursor_wm)) | |
2059 | return; | |
2060 | ||
2061 | I915_WRITE(WM1_LP_ILK, | |
2062 | WM1_LP_SR_EN | | |
b0aea5dc | 2063 | (dev_priv->wm.pri_latency[1] << WM1_LP_LATENCY_SHIFT) | |
b445e3b0 ED |
2064 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
2065 | (plane_wm << WM1_LP_SR_SHIFT) | | |
2066 | cursor_wm); | |
2067 | ||
2068 | /* WM2 */ | |
2069 | if (!ironlake_compute_srwm(dev, 2, enabled, | |
b0aea5dc | 2070 | dev_priv->wm.pri_latency[2] * 500, |
b445e3b0 ED |
2071 | &sandybridge_display_srwm_info, |
2072 | &sandybridge_cursor_srwm_info, | |
2073 | &fbc_wm, &plane_wm, &cursor_wm)) | |
2074 | return; | |
2075 | ||
2076 | I915_WRITE(WM2_LP_ILK, | |
2077 | WM2_LP_EN | | |
b0aea5dc | 2078 | (dev_priv->wm.pri_latency[2] << WM1_LP_LATENCY_SHIFT) | |
b445e3b0 ED |
2079 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
2080 | (plane_wm << WM1_LP_SR_SHIFT) | | |
2081 | cursor_wm); | |
2082 | ||
c43d0188 | 2083 | /* WM3, note we have to correct the cursor latency */ |
b445e3b0 | 2084 | if (!ironlake_compute_srwm(dev, 3, enabled, |
b0aea5dc | 2085 | dev_priv->wm.pri_latency[3] * 500, |
b445e3b0 ED |
2086 | &sandybridge_display_srwm_info, |
2087 | &sandybridge_cursor_srwm_info, | |
c43d0188 CW |
2088 | &fbc_wm, &plane_wm, &ignore_cursor_wm) || |
2089 | !ironlake_compute_srwm(dev, 3, enabled, | |
b0aea5dc | 2090 | dev_priv->wm.cur_latency[3] * 500, |
c43d0188 CW |
2091 | &sandybridge_display_srwm_info, |
2092 | &sandybridge_cursor_srwm_info, | |
2093 | &ignore_fbc_wm, &ignore_plane_wm, &cursor_wm)) | |
b445e3b0 ED |
2094 | return; |
2095 | ||
2096 | I915_WRITE(WM3_LP_ILK, | |
2097 | WM3_LP_EN | | |
b0aea5dc | 2098 | (dev_priv->wm.pri_latency[3] << WM1_LP_LATENCY_SHIFT) | |
b445e3b0 ED |
2099 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
2100 | (plane_wm << WM1_LP_SR_SHIFT) | | |
2101 | cursor_wm); | |
2102 | } | |
2103 | ||
3658729a VS |
2104 | static uint32_t ilk_pipe_pixel_rate(struct drm_device *dev, |
2105 | struct drm_crtc *crtc) | |
801bcfff PZ |
2106 | { |
2107 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
2108 | uint32_t pixel_rate, pfit_size; | |
2109 | ||
ff9a6750 | 2110 | pixel_rate = intel_crtc->config.adjusted_mode.clock; |
801bcfff PZ |
2111 | |
2112 | /* We only use IF-ID interlacing. If we ever use PF-ID we'll need to | |
2113 | * adjust the pixel_rate here. */ | |
2114 | ||
2115 | pfit_size = intel_crtc->config.pch_pfit.size; | |
2116 | if (pfit_size) { | |
2117 | uint64_t pipe_w, pipe_h, pfit_w, pfit_h; | |
2118 | ||
2119 | pipe_w = intel_crtc->config.requested_mode.hdisplay; | |
2120 | pipe_h = intel_crtc->config.requested_mode.vdisplay; | |
2121 | pfit_w = (pfit_size >> 16) & 0xFFFF; | |
2122 | pfit_h = pfit_size & 0xFFFF; | |
2123 | if (pipe_w < pfit_w) | |
2124 | pipe_w = pfit_w; | |
2125 | if (pipe_h < pfit_h) | |
2126 | pipe_h = pfit_h; | |
2127 | ||
2128 | pixel_rate = div_u64((uint64_t) pixel_rate * pipe_w * pipe_h, | |
2129 | pfit_w * pfit_h); | |
2130 | } | |
2131 | ||
2132 | return pixel_rate; | |
2133 | } | |
2134 | ||
37126462 | 2135 | /* latency must be in 0.1us units. */ |
23297044 | 2136 | static uint32_t ilk_wm_method1(uint32_t pixel_rate, uint8_t bytes_per_pixel, |
801bcfff PZ |
2137 | uint32_t latency) |
2138 | { | |
2139 | uint64_t ret; | |
2140 | ||
3312ba65 VS |
2141 | if (WARN(latency == 0, "Latency value missing\n")) |
2142 | return UINT_MAX; | |
2143 | ||
801bcfff PZ |
2144 | ret = (uint64_t) pixel_rate * bytes_per_pixel * latency; |
2145 | ret = DIV_ROUND_UP_ULL(ret, 64 * 10000) + 2; | |
2146 | ||
2147 | return ret; | |
2148 | } | |
2149 | ||
37126462 | 2150 | /* latency must be in 0.1us units. */ |
23297044 | 2151 | static uint32_t ilk_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, |
801bcfff PZ |
2152 | uint32_t horiz_pixels, uint8_t bytes_per_pixel, |
2153 | uint32_t latency) | |
2154 | { | |
2155 | uint32_t ret; | |
2156 | ||
3312ba65 VS |
2157 | if (WARN(latency == 0, "Latency value missing\n")) |
2158 | return UINT_MAX; | |
2159 | ||
801bcfff PZ |
2160 | ret = (latency * pixel_rate) / (pipe_htotal * 10000); |
2161 | ret = (ret + 1) * horiz_pixels * bytes_per_pixel; | |
2162 | ret = DIV_ROUND_UP(ret, 64) + 2; | |
2163 | return ret; | |
2164 | } | |
2165 | ||
23297044 | 2166 | static uint32_t ilk_wm_fbc(uint32_t pri_val, uint32_t horiz_pixels, |
cca32e9a PZ |
2167 | uint8_t bytes_per_pixel) |
2168 | { | |
2169 | return DIV_ROUND_UP(pri_val * 64, horiz_pixels * bytes_per_pixel) + 2; | |
2170 | } | |
2171 | ||
801bcfff PZ |
2172 | struct hsw_pipe_wm_parameters { |
2173 | bool active; | |
801bcfff PZ |
2174 | uint32_t pipe_htotal; |
2175 | uint32_t pixel_rate; | |
c35426d2 VS |
2176 | struct intel_plane_wm_parameters pri; |
2177 | struct intel_plane_wm_parameters spr; | |
2178 | struct intel_plane_wm_parameters cur; | |
801bcfff PZ |
2179 | }; |
2180 | ||
cca32e9a PZ |
2181 | struct hsw_wm_maximums { |
2182 | uint16_t pri; | |
2183 | uint16_t spr; | |
2184 | uint16_t cur; | |
2185 | uint16_t fbc; | |
2186 | }; | |
2187 | ||
801bcfff PZ |
2188 | struct hsw_wm_values { |
2189 | uint32_t wm_pipe[3]; | |
2190 | uint32_t wm_lp[3]; | |
2191 | uint32_t wm_lp_spr[3]; | |
2192 | uint32_t wm_linetime[3]; | |
cca32e9a | 2193 | bool enable_fbc_wm; |
801bcfff PZ |
2194 | }; |
2195 | ||
240264f4 VS |
2196 | /* used in computing the new watermarks state */ |
2197 | struct intel_wm_config { | |
2198 | unsigned int num_pipes_active; | |
2199 | bool sprites_enabled; | |
2200 | bool sprites_scaled; | |
2201 | bool fbc_wm_enabled; | |
2202 | }; | |
2203 | ||
37126462 VS |
2204 | /* |
2205 | * For both WM_PIPE and WM_LP. | |
2206 | * mem_value must be in 0.1us units. | |
2207 | */ | |
ac830fe1 | 2208 | static uint32_t ilk_compute_pri_wm(const struct hsw_pipe_wm_parameters *params, |
cca32e9a PZ |
2209 | uint32_t mem_value, |
2210 | bool is_lp) | |
801bcfff | 2211 | { |
cca32e9a PZ |
2212 | uint32_t method1, method2; |
2213 | ||
c35426d2 | 2214 | if (!params->active || !params->pri.enabled) |
801bcfff PZ |
2215 | return 0; |
2216 | ||
23297044 | 2217 | method1 = ilk_wm_method1(params->pixel_rate, |
c35426d2 | 2218 | params->pri.bytes_per_pixel, |
cca32e9a PZ |
2219 | mem_value); |
2220 | ||
2221 | if (!is_lp) | |
2222 | return method1; | |
2223 | ||
23297044 | 2224 | method2 = ilk_wm_method2(params->pixel_rate, |
cca32e9a | 2225 | params->pipe_htotal, |
c35426d2 VS |
2226 | params->pri.horiz_pixels, |
2227 | params->pri.bytes_per_pixel, | |
cca32e9a PZ |
2228 | mem_value); |
2229 | ||
2230 | return min(method1, method2); | |
801bcfff PZ |
2231 | } |
2232 | ||
37126462 VS |
2233 | /* |
2234 | * For both WM_PIPE and WM_LP. | |
2235 | * mem_value must be in 0.1us units. | |
2236 | */ | |
ac830fe1 | 2237 | static uint32_t ilk_compute_spr_wm(const struct hsw_pipe_wm_parameters *params, |
801bcfff PZ |
2238 | uint32_t mem_value) |
2239 | { | |
2240 | uint32_t method1, method2; | |
2241 | ||
c35426d2 | 2242 | if (!params->active || !params->spr.enabled) |
801bcfff PZ |
2243 | return 0; |
2244 | ||
23297044 | 2245 | method1 = ilk_wm_method1(params->pixel_rate, |
c35426d2 | 2246 | params->spr.bytes_per_pixel, |
801bcfff | 2247 | mem_value); |
23297044 | 2248 | method2 = ilk_wm_method2(params->pixel_rate, |
801bcfff | 2249 | params->pipe_htotal, |
c35426d2 VS |
2250 | params->spr.horiz_pixels, |
2251 | params->spr.bytes_per_pixel, | |
801bcfff PZ |
2252 | mem_value); |
2253 | return min(method1, method2); | |
2254 | } | |
2255 | ||
37126462 VS |
2256 | /* |
2257 | * For both WM_PIPE and WM_LP. | |
2258 | * mem_value must be in 0.1us units. | |
2259 | */ | |
ac830fe1 | 2260 | static uint32_t ilk_compute_cur_wm(const struct hsw_pipe_wm_parameters *params, |
801bcfff PZ |
2261 | uint32_t mem_value) |
2262 | { | |
c35426d2 | 2263 | if (!params->active || !params->cur.enabled) |
801bcfff PZ |
2264 | return 0; |
2265 | ||
23297044 | 2266 | return ilk_wm_method2(params->pixel_rate, |
801bcfff | 2267 | params->pipe_htotal, |
c35426d2 VS |
2268 | params->cur.horiz_pixels, |
2269 | params->cur.bytes_per_pixel, | |
801bcfff PZ |
2270 | mem_value); |
2271 | } | |
2272 | ||
cca32e9a | 2273 | /* Only for WM_LP. */ |
ac830fe1 | 2274 | static uint32_t ilk_compute_fbc_wm(const struct hsw_pipe_wm_parameters *params, |
1fda9882 | 2275 | uint32_t pri_val) |
cca32e9a | 2276 | { |
c35426d2 | 2277 | if (!params->active || !params->pri.enabled) |
cca32e9a PZ |
2278 | return 0; |
2279 | ||
23297044 | 2280 | return ilk_wm_fbc(pri_val, |
c35426d2 VS |
2281 | params->pri.horiz_pixels, |
2282 | params->pri.bytes_per_pixel); | |
cca32e9a PZ |
2283 | } |
2284 | ||
158ae64f VS |
2285 | static unsigned int ilk_display_fifo_size(const struct drm_device *dev) |
2286 | { | |
2287 | if (INTEL_INFO(dev)->gen >= 7) | |
2288 | return 768; | |
2289 | else | |
2290 | return 512; | |
2291 | } | |
2292 | ||
2293 | /* Calculate the maximum primary/sprite plane watermark */ | |
2294 | static unsigned int ilk_plane_wm_max(const struct drm_device *dev, | |
2295 | int level, | |
240264f4 | 2296 | const struct intel_wm_config *config, |
158ae64f VS |
2297 | enum intel_ddb_partitioning ddb_partitioning, |
2298 | bool is_sprite) | |
2299 | { | |
2300 | unsigned int fifo_size = ilk_display_fifo_size(dev); | |
2301 | unsigned int max; | |
2302 | ||
2303 | /* if sprites aren't enabled, sprites get nothing */ | |
240264f4 | 2304 | if (is_sprite && !config->sprites_enabled) |
158ae64f VS |
2305 | return 0; |
2306 | ||
2307 | /* HSW allows LP1+ watermarks even with multiple pipes */ | |
240264f4 | 2308 | if (level == 0 || config->num_pipes_active > 1) { |
158ae64f VS |
2309 | fifo_size /= INTEL_INFO(dev)->num_pipes; |
2310 | ||
2311 | /* | |
2312 | * For some reason the non self refresh | |
2313 | * FIFO size is only half of the self | |
2314 | * refresh FIFO size on ILK/SNB. | |
2315 | */ | |
2316 | if (INTEL_INFO(dev)->gen <= 6) | |
2317 | fifo_size /= 2; | |
2318 | } | |
2319 | ||
240264f4 | 2320 | if (config->sprites_enabled) { |
158ae64f VS |
2321 | /* level 0 is always calculated with 1:1 split */ |
2322 | if (level > 0 && ddb_partitioning == INTEL_DDB_PART_5_6) { | |
2323 | if (is_sprite) | |
2324 | fifo_size *= 5; | |
2325 | fifo_size /= 6; | |
2326 | } else { | |
2327 | fifo_size /= 2; | |
2328 | } | |
2329 | } | |
2330 | ||
2331 | /* clamp to max that the registers can hold */ | |
2332 | if (INTEL_INFO(dev)->gen >= 7) | |
2333 | /* IVB/HSW primary/sprite plane watermarks */ | |
2334 | max = level == 0 ? 127 : 1023; | |
2335 | else if (!is_sprite) | |
2336 | /* ILK/SNB primary plane watermarks */ | |
2337 | max = level == 0 ? 127 : 511; | |
2338 | else | |
2339 | /* ILK/SNB sprite plane watermarks */ | |
2340 | max = level == 0 ? 63 : 255; | |
2341 | ||
2342 | return min(fifo_size, max); | |
2343 | } | |
2344 | ||
2345 | /* Calculate the maximum cursor plane watermark */ | |
2346 | static unsigned int ilk_cursor_wm_max(const struct drm_device *dev, | |
240264f4 VS |
2347 | int level, |
2348 | const struct intel_wm_config *config) | |
158ae64f VS |
2349 | { |
2350 | /* HSW LP1+ watermarks w/ multiple pipes */ | |
240264f4 | 2351 | if (level > 0 && config->num_pipes_active > 1) |
158ae64f VS |
2352 | return 64; |
2353 | ||
2354 | /* otherwise just report max that registers can hold */ | |
2355 | if (INTEL_INFO(dev)->gen >= 7) | |
2356 | return level == 0 ? 63 : 255; | |
2357 | else | |
2358 | return level == 0 ? 31 : 63; | |
2359 | } | |
2360 | ||
2361 | /* Calculate the maximum FBC watermark */ | |
2362 | static unsigned int ilk_fbc_wm_max(void) | |
2363 | { | |
2364 | /* max that registers can hold */ | |
2365 | return 15; | |
2366 | } | |
2367 | ||
2368 | static void ilk_wm_max(struct drm_device *dev, | |
2369 | int level, | |
240264f4 | 2370 | const struct intel_wm_config *config, |
158ae64f VS |
2371 | enum intel_ddb_partitioning ddb_partitioning, |
2372 | struct hsw_wm_maximums *max) | |
2373 | { | |
240264f4 VS |
2374 | max->pri = ilk_plane_wm_max(dev, level, config, ddb_partitioning, false); |
2375 | max->spr = ilk_plane_wm_max(dev, level, config, ddb_partitioning, true); | |
2376 | max->cur = ilk_cursor_wm_max(dev, level, config); | |
158ae64f VS |
2377 | max->fbc = ilk_fbc_wm_max(); |
2378 | } | |
2379 | ||
a9786a11 VS |
2380 | static bool ilk_check_wm(int level, |
2381 | const struct hsw_wm_maximums *max, | |
1fd527cc | 2382 | struct intel_wm_level *result) |
a9786a11 VS |
2383 | { |
2384 | bool ret; | |
2385 | ||
2386 | /* already determined to be invalid? */ | |
2387 | if (!result->enable) | |
2388 | return false; | |
2389 | ||
2390 | result->enable = result->pri_val <= max->pri && | |
2391 | result->spr_val <= max->spr && | |
2392 | result->cur_val <= max->cur; | |
2393 | ||
2394 | ret = result->enable; | |
2395 | ||
2396 | /* | |
2397 | * HACK until we can pre-compute everything, | |
2398 | * and thus fail gracefully if LP0 watermarks | |
2399 | * are exceeded... | |
2400 | */ | |
2401 | if (level == 0 && !result->enable) { | |
2402 | if (result->pri_val > max->pri) | |
2403 | DRM_DEBUG_KMS("Primary WM%d too large %u (max %u)\n", | |
2404 | level, result->pri_val, max->pri); | |
2405 | if (result->spr_val > max->spr) | |
2406 | DRM_DEBUG_KMS("Sprite WM%d too large %u (max %u)\n", | |
2407 | level, result->spr_val, max->spr); | |
2408 | if (result->cur_val > max->cur) | |
2409 | DRM_DEBUG_KMS("Cursor WM%d too large %u (max %u)\n", | |
2410 | level, result->cur_val, max->cur); | |
2411 | ||
2412 | result->pri_val = min_t(uint32_t, result->pri_val, max->pri); | |
2413 | result->spr_val = min_t(uint32_t, result->spr_val, max->spr); | |
2414 | result->cur_val = min_t(uint32_t, result->cur_val, max->cur); | |
2415 | result->enable = true; | |
2416 | } | |
2417 | ||
2418 | DRM_DEBUG_KMS("WM%d: %sabled\n", level, result->enable ? "en" : "dis"); | |
2419 | ||
2420 | return ret; | |
2421 | } | |
2422 | ||
6f5ddd17 VS |
2423 | static void ilk_compute_wm_level(struct drm_i915_private *dev_priv, |
2424 | int level, | |
ac830fe1 | 2425 | const struct hsw_pipe_wm_parameters *p, |
1fd527cc | 2426 | struct intel_wm_level *result) |
6f5ddd17 VS |
2427 | { |
2428 | uint16_t pri_latency = dev_priv->wm.pri_latency[level]; | |
2429 | uint16_t spr_latency = dev_priv->wm.spr_latency[level]; | |
2430 | uint16_t cur_latency = dev_priv->wm.cur_latency[level]; | |
2431 | ||
2432 | /* WM1+ latency values stored in 0.5us units */ | |
2433 | if (level > 0) { | |
2434 | pri_latency *= 5; | |
2435 | spr_latency *= 5; | |
2436 | cur_latency *= 5; | |
2437 | } | |
2438 | ||
2439 | result->pri_val = ilk_compute_pri_wm(p, pri_latency, level); | |
2440 | result->spr_val = ilk_compute_spr_wm(p, spr_latency); | |
2441 | result->cur_val = ilk_compute_cur_wm(p, cur_latency); | |
2442 | result->fbc_val = ilk_compute_fbc_wm(p, result->pri_val); | |
2443 | result->enable = true; | |
2444 | } | |
2445 | ||
5b77da33 | 2446 | static bool hsw_compute_lp_wm(struct drm_i915_private *dev_priv, |
ac830fe1 VS |
2447 | int level, const struct hsw_wm_maximums *max, |
2448 | const struct hsw_pipe_wm_parameters *params, | |
1fd527cc | 2449 | struct intel_wm_level *result) |
cca32e9a PZ |
2450 | { |
2451 | enum pipe pipe; | |
1fd527cc | 2452 | struct intel_wm_level res[3]; |
6f5ddd17 VS |
2453 | |
2454 | for (pipe = PIPE_A; pipe <= PIPE_C; pipe++) | |
2455 | ilk_compute_wm_level(dev_priv, level, ¶ms[pipe], &res[pipe]); | |
cca32e9a | 2456 | |
6f5ddd17 VS |
2457 | result->pri_val = max3(res[0].pri_val, res[1].pri_val, res[2].pri_val); |
2458 | result->spr_val = max3(res[0].spr_val, res[1].spr_val, res[2].spr_val); | |
2459 | result->cur_val = max3(res[0].cur_val, res[1].cur_val, res[2].cur_val); | |
2460 | result->fbc_val = max3(res[0].fbc_val, res[1].fbc_val, res[2].fbc_val); | |
2461 | result->enable = true; | |
cca32e9a | 2462 | |
a9786a11 | 2463 | return ilk_check_wm(level, max, result); |
cca32e9a PZ |
2464 | } |
2465 | ||
8de123a5 VS |
2466 | |
2467 | static uint32_t hsw_compute_wm_pipe(struct drm_device *dev, | |
ac830fe1 | 2468 | const struct hsw_pipe_wm_parameters *params) |
801bcfff | 2469 | { |
8de123a5 VS |
2470 | struct drm_i915_private *dev_priv = dev->dev_private; |
2471 | struct intel_wm_config config = { | |
2472 | .num_pipes_active = 1, | |
2473 | .sprites_enabled = params->spr.enabled, | |
2474 | .sprites_scaled = params->spr.scaled, | |
2475 | }; | |
2476 | struct hsw_wm_maximums max; | |
2477 | struct intel_wm_level res; | |
2478 | ||
2479 | if (!params->active) | |
2480 | return 0; | |
2481 | ||
2482 | ilk_wm_max(dev, 0, &config, INTEL_DDB_PART_1_2, &max); | |
801bcfff | 2483 | |
8de123a5 | 2484 | ilk_compute_wm_level(dev_priv, 0, params, &res); |
801bcfff | 2485 | |
8de123a5 | 2486 | ilk_check_wm(0, &max, &res); |
801bcfff | 2487 | |
8de123a5 VS |
2488 | return (res.pri_val << WM0_PIPE_PLANE_SHIFT) | |
2489 | (res.spr_val << WM0_PIPE_SPRITE_SHIFT) | | |
2490 | res.cur_val; | |
801bcfff PZ |
2491 | } |
2492 | ||
2493 | static uint32_t | |
2494 | hsw_compute_linetime_wm(struct drm_device *dev, struct drm_crtc *crtc) | |
1f8eeabf ED |
2495 | { |
2496 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1011d8c4 | 2497 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
1011d8c4 | 2498 | struct drm_display_mode *mode = &intel_crtc->config.adjusted_mode; |
85a02deb | 2499 | u32 linetime, ips_linetime; |
1f8eeabf | 2500 | |
801bcfff PZ |
2501 | if (!intel_crtc_active(crtc)) |
2502 | return 0; | |
1011d8c4 | 2503 | |
1f8eeabf ED |
2504 | /* The WM are computed with base on how long it takes to fill a single |
2505 | * row at the given clock rate, multiplied by 8. | |
2506 | * */ | |
85a02deb PZ |
2507 | linetime = DIV_ROUND_CLOSEST(mode->htotal * 1000 * 8, mode->clock); |
2508 | ips_linetime = DIV_ROUND_CLOSEST(mode->htotal * 1000 * 8, | |
2509 | intel_ddi_get_cdclk_freq(dev_priv)); | |
1f8eeabf | 2510 | |
801bcfff PZ |
2511 | return PIPE_WM_LINETIME_IPS_LINETIME(ips_linetime) | |
2512 | PIPE_WM_LINETIME_TIME(linetime); | |
1f8eeabf ED |
2513 | } |
2514 | ||
12b134df VS |
2515 | static void intel_read_wm_latency(struct drm_device *dev, uint16_t wm[5]) |
2516 | { | |
2517 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2518 | ||
2519 | if (IS_HASWELL(dev)) { | |
2520 | uint64_t sskpd = I915_READ64(MCH_SSKPD); | |
2521 | ||
2522 | wm[0] = (sskpd >> 56) & 0xFF; | |
2523 | if (wm[0] == 0) | |
2524 | wm[0] = sskpd & 0xF; | |
e5d5019e VS |
2525 | wm[1] = (sskpd >> 4) & 0xFF; |
2526 | wm[2] = (sskpd >> 12) & 0xFF; | |
2527 | wm[3] = (sskpd >> 20) & 0x1FF; | |
2528 | wm[4] = (sskpd >> 32) & 0x1FF; | |
63cf9a13 VS |
2529 | } else if (INTEL_INFO(dev)->gen >= 6) { |
2530 | uint32_t sskpd = I915_READ(MCH_SSKPD); | |
2531 | ||
2532 | wm[0] = (sskpd >> SSKPD_WM0_SHIFT) & SSKPD_WM_MASK; | |
2533 | wm[1] = (sskpd >> SSKPD_WM1_SHIFT) & SSKPD_WM_MASK; | |
2534 | wm[2] = (sskpd >> SSKPD_WM2_SHIFT) & SSKPD_WM_MASK; | |
2535 | wm[3] = (sskpd >> SSKPD_WM3_SHIFT) & SSKPD_WM_MASK; | |
3a88d0ac VS |
2536 | } else if (INTEL_INFO(dev)->gen >= 5) { |
2537 | uint32_t mltr = I915_READ(MLTR_ILK); | |
2538 | ||
2539 | /* ILK primary LP0 latency is 700 ns */ | |
2540 | wm[0] = 7; | |
2541 | wm[1] = (mltr >> MLTR_WM1_SHIFT) & ILK_SRLT_MASK; | |
2542 | wm[2] = (mltr >> MLTR_WM2_SHIFT) & ILK_SRLT_MASK; | |
12b134df VS |
2543 | } |
2544 | } | |
2545 | ||
53615a5e VS |
2546 | static void intel_fixup_spr_wm_latency(struct drm_device *dev, uint16_t wm[5]) |
2547 | { | |
2548 | /* ILK sprite LP0 latency is 1300 ns */ | |
2549 | if (INTEL_INFO(dev)->gen == 5) | |
2550 | wm[0] = 13; | |
2551 | } | |
2552 | ||
2553 | static void intel_fixup_cur_wm_latency(struct drm_device *dev, uint16_t wm[5]) | |
2554 | { | |
2555 | /* ILK cursor LP0 latency is 1300 ns */ | |
2556 | if (INTEL_INFO(dev)->gen == 5) | |
2557 | wm[0] = 13; | |
2558 | ||
2559 | /* WaDoubleCursorLP3Latency:ivb */ | |
2560 | if (IS_IVYBRIDGE(dev)) | |
2561 | wm[3] *= 2; | |
2562 | } | |
2563 | ||
ad0d6dc4 | 2564 | static int ilk_wm_max_level(const struct drm_device *dev) |
26ec971e | 2565 | { |
26ec971e VS |
2566 | /* how many WM levels are we expecting */ |
2567 | if (IS_HASWELL(dev)) | |
ad0d6dc4 | 2568 | return 4; |
26ec971e | 2569 | else if (INTEL_INFO(dev)->gen >= 6) |
ad0d6dc4 | 2570 | return 3; |
26ec971e | 2571 | else |
ad0d6dc4 VS |
2572 | return 2; |
2573 | } | |
2574 | ||
2575 | static void intel_print_wm_latency(struct drm_device *dev, | |
2576 | const char *name, | |
2577 | const uint16_t wm[5]) | |
2578 | { | |
2579 | int level, max_level = ilk_wm_max_level(dev); | |
26ec971e VS |
2580 | |
2581 | for (level = 0; level <= max_level; level++) { | |
2582 | unsigned int latency = wm[level]; | |
2583 | ||
2584 | if (latency == 0) { | |
2585 | DRM_ERROR("%s WM%d latency not provided\n", | |
2586 | name, level); | |
2587 | continue; | |
2588 | } | |
2589 | ||
2590 | /* WM1+ latency values in 0.5us units */ | |
2591 | if (level > 0) | |
2592 | latency *= 5; | |
2593 | ||
2594 | DRM_DEBUG_KMS("%s WM%d latency %u (%u.%u usec)\n", | |
2595 | name, level, wm[level], | |
2596 | latency / 10, latency % 10); | |
2597 | } | |
2598 | } | |
2599 | ||
53615a5e VS |
2600 | static void intel_setup_wm_latency(struct drm_device *dev) |
2601 | { | |
2602 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2603 | ||
2604 | intel_read_wm_latency(dev, dev_priv->wm.pri_latency); | |
2605 | ||
2606 | memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency, | |
2607 | sizeof(dev_priv->wm.pri_latency)); | |
2608 | memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency, | |
2609 | sizeof(dev_priv->wm.pri_latency)); | |
2610 | ||
2611 | intel_fixup_spr_wm_latency(dev, dev_priv->wm.spr_latency); | |
2612 | intel_fixup_cur_wm_latency(dev, dev_priv->wm.cur_latency); | |
26ec971e VS |
2613 | |
2614 | intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); | |
2615 | intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); | |
2616 | intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); | |
53615a5e VS |
2617 | } |
2618 | ||
801bcfff PZ |
2619 | static void hsw_compute_wm_parameters(struct drm_device *dev, |
2620 | struct hsw_pipe_wm_parameters *params, | |
861f3389 PZ |
2621 | struct hsw_wm_maximums *lp_max_1_2, |
2622 | struct hsw_wm_maximums *lp_max_5_6) | |
1011d8c4 | 2623 | { |
1011d8c4 | 2624 | struct drm_crtc *crtc; |
801bcfff | 2625 | struct drm_plane *plane; |
1011d8c4 | 2626 | enum pipe pipe; |
240264f4 | 2627 | struct intel_wm_config config = {}; |
1011d8c4 | 2628 | |
801bcfff PZ |
2629 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
2630 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
2631 | struct hsw_pipe_wm_parameters *p; | |
2632 | ||
2633 | pipe = intel_crtc->pipe; | |
2634 | p = ¶ms[pipe]; | |
2635 | ||
2636 | p->active = intel_crtc_active(crtc); | |
2637 | if (!p->active) | |
2638 | continue; | |
2639 | ||
240264f4 | 2640 | config.num_pipes_active++; |
cca32e9a | 2641 | |
801bcfff | 2642 | p->pipe_htotal = intel_crtc->config.adjusted_mode.htotal; |
3658729a | 2643 | p->pixel_rate = ilk_pipe_pixel_rate(dev, crtc); |
c35426d2 VS |
2644 | p->pri.bytes_per_pixel = crtc->fb->bits_per_pixel / 8; |
2645 | p->cur.bytes_per_pixel = 4; | |
2646 | p->pri.horiz_pixels = | |
801bcfff | 2647 | intel_crtc->config.requested_mode.hdisplay; |
c35426d2 VS |
2648 | p->cur.horiz_pixels = 64; |
2649 | /* TODO: for now, assume primary and cursor planes are always enabled. */ | |
2650 | p->pri.enabled = true; | |
2651 | p->cur.enabled = true; | |
801bcfff PZ |
2652 | } |
2653 | ||
2654 | list_for_each_entry(plane, &dev->mode_config.plane_list, head) { | |
2655 | struct intel_plane *intel_plane = to_intel_plane(plane); | |
2656 | struct hsw_pipe_wm_parameters *p; | |
2657 | ||
2658 | pipe = intel_plane->pipe; | |
2659 | p = ¶ms[pipe]; | |
2660 | ||
c35426d2 | 2661 | p->spr = intel_plane->wm; |
cca32e9a | 2662 | |
c35426d2 VS |
2663 | config.sprites_enabled |= p->spr.enabled; |
2664 | config.sprites_scaled |= p->spr.scaled; | |
cca32e9a PZ |
2665 | } |
2666 | ||
240264f4 | 2667 | ilk_wm_max(dev, 1, &config, INTEL_DDB_PART_1_2, lp_max_1_2); |
158ae64f VS |
2668 | |
2669 | /* 5/6 split only in single pipe config on IVB+ */ | |
240264f4 VS |
2670 | if (INTEL_INFO(dev)->gen >= 7 && config.num_pipes_active <= 1) |
2671 | ilk_wm_max(dev, 1, &config, INTEL_DDB_PART_5_6, lp_max_5_6); | |
158ae64f VS |
2672 | else |
2673 | *lp_max_5_6 = *lp_max_1_2; | |
801bcfff PZ |
2674 | } |
2675 | ||
2676 | static void hsw_compute_wm_results(struct drm_device *dev, | |
ac830fe1 VS |
2677 | const struct hsw_pipe_wm_parameters *params, |
2678 | const struct hsw_wm_maximums *lp_maximums, | |
801bcfff PZ |
2679 | struct hsw_wm_values *results) |
2680 | { | |
2681 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2682 | struct drm_crtc *crtc; | |
1fd527cc | 2683 | struct intel_wm_level lp_results[4] = {}; |
801bcfff | 2684 | enum pipe pipe; |
cca32e9a PZ |
2685 | int level, max_level, wm_lp; |
2686 | ||
2687 | for (level = 1; level <= 4; level++) | |
5b77da33 VS |
2688 | if (!hsw_compute_lp_wm(dev_priv, level, |
2689 | lp_maximums, params, | |
cca32e9a PZ |
2690 | &lp_results[level - 1])) |
2691 | break; | |
2692 | max_level = level - 1; | |
2693 | ||
5c536613 VS |
2694 | memset(results, 0, sizeof(*results)); |
2695 | ||
cca32e9a PZ |
2696 | /* The spec says it is preferred to disable FBC WMs instead of disabling |
2697 | * a WM level. */ | |
2698 | results->enable_fbc_wm = true; | |
2699 | for (level = 1; level <= max_level; level++) { | |
16e54061 | 2700 | if (lp_results[level - 1].fbc_val > lp_maximums->fbc) { |
cca32e9a | 2701 | results->enable_fbc_wm = false; |
71fff20f | 2702 | lp_results[level - 1].fbc_val = 0; |
cca32e9a PZ |
2703 | } |
2704 | } | |
2705 | ||
cca32e9a | 2706 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { |
1fd527cc | 2707 | const struct intel_wm_level *r; |
801bcfff | 2708 | |
cca32e9a PZ |
2709 | level = (max_level == 4 && wm_lp > 1) ? wm_lp + 1 : wm_lp; |
2710 | if (level > max_level) | |
2711 | break; | |
2712 | ||
2713 | r = &lp_results[level - 1]; | |
2714 | results->wm_lp[wm_lp - 1] = HSW_WM_LP_VAL(level * 2, | |
2715 | r->fbc_val, | |
2716 | r->pri_val, | |
2717 | r->cur_val); | |
2718 | results->wm_lp_spr[wm_lp - 1] = r->spr_val; | |
2719 | } | |
801bcfff PZ |
2720 | |
2721 | for_each_pipe(pipe) | |
8de123a5 | 2722 | results->wm_pipe[pipe] = hsw_compute_wm_pipe(dev, |
801bcfff | 2723 | ¶ms[pipe]); |
1011d8c4 PZ |
2724 | |
2725 | for_each_pipe(pipe) { | |
2726 | crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
801bcfff PZ |
2727 | results->wm_linetime[pipe] = hsw_compute_linetime_wm(dev, crtc); |
2728 | } | |
2729 | } | |
2730 | ||
861f3389 PZ |
2731 | /* Find the result with the highest level enabled. Check for enable_fbc_wm in |
2732 | * case both are at the same level. Prefer r1 in case they're the same. */ | |
f4db9321 DL |
2733 | static struct hsw_wm_values *hsw_find_best_result(struct hsw_wm_values *r1, |
2734 | struct hsw_wm_values *r2) | |
861f3389 PZ |
2735 | { |
2736 | int i, val_r1 = 0, val_r2 = 0; | |
2737 | ||
2738 | for (i = 0; i < 3; i++) { | |
2739 | if (r1->wm_lp[i] & WM3_LP_EN) | |
2740 | val_r1 = r1->wm_lp[i] & WM1_LP_LATENCY_MASK; | |
2741 | if (r2->wm_lp[i] & WM3_LP_EN) | |
2742 | val_r2 = r2->wm_lp[i] & WM1_LP_LATENCY_MASK; | |
2743 | } | |
2744 | ||
2745 | if (val_r1 == val_r2) { | |
2746 | if (r2->enable_fbc_wm && !r1->enable_fbc_wm) | |
2747 | return r2; | |
2748 | else | |
2749 | return r1; | |
2750 | } else if (val_r1 > val_r2) { | |
2751 | return r1; | |
2752 | } else { | |
2753 | return r2; | |
2754 | } | |
2755 | } | |
2756 | ||
801bcfff PZ |
2757 | /* |
2758 | * The spec says we shouldn't write when we don't need, because every write | |
2759 | * causes WMs to be re-evaluated, expending some power. | |
2760 | */ | |
2761 | static void hsw_write_wm_values(struct drm_i915_private *dev_priv, | |
2762 | struct hsw_wm_values *results, | |
77c122bc | 2763 | enum intel_ddb_partitioning partitioning) |
801bcfff PZ |
2764 | { |
2765 | struct hsw_wm_values previous; | |
2766 | uint32_t val; | |
77c122bc | 2767 | enum intel_ddb_partitioning prev_partitioning; |
cca32e9a | 2768 | bool prev_enable_fbc_wm; |
801bcfff PZ |
2769 | |
2770 | previous.wm_pipe[0] = I915_READ(WM0_PIPEA_ILK); | |
2771 | previous.wm_pipe[1] = I915_READ(WM0_PIPEB_ILK); | |
2772 | previous.wm_pipe[2] = I915_READ(WM0_PIPEC_IVB); | |
2773 | previous.wm_lp[0] = I915_READ(WM1_LP_ILK); | |
2774 | previous.wm_lp[1] = I915_READ(WM2_LP_ILK); | |
2775 | previous.wm_lp[2] = I915_READ(WM3_LP_ILK); | |
2776 | previous.wm_lp_spr[0] = I915_READ(WM1S_LP_ILK); | |
2777 | previous.wm_lp_spr[1] = I915_READ(WM2S_LP_IVB); | |
2778 | previous.wm_lp_spr[2] = I915_READ(WM3S_LP_IVB); | |
2779 | previous.wm_linetime[0] = I915_READ(PIPE_WM_LINETIME(PIPE_A)); | |
2780 | previous.wm_linetime[1] = I915_READ(PIPE_WM_LINETIME(PIPE_B)); | |
2781 | previous.wm_linetime[2] = I915_READ(PIPE_WM_LINETIME(PIPE_C)); | |
2782 | ||
2783 | prev_partitioning = (I915_READ(WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ? | |
77c122bc | 2784 | INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; |
801bcfff | 2785 | |
cca32e9a PZ |
2786 | prev_enable_fbc_wm = !(I915_READ(DISP_ARB_CTL) & DISP_FBC_WM_DIS); |
2787 | ||
801bcfff PZ |
2788 | if (memcmp(results->wm_pipe, previous.wm_pipe, |
2789 | sizeof(results->wm_pipe)) == 0 && | |
2790 | memcmp(results->wm_lp, previous.wm_lp, | |
2791 | sizeof(results->wm_lp)) == 0 && | |
2792 | memcmp(results->wm_lp_spr, previous.wm_lp_spr, | |
2793 | sizeof(results->wm_lp_spr)) == 0 && | |
2794 | memcmp(results->wm_linetime, previous.wm_linetime, | |
2795 | sizeof(results->wm_linetime)) == 0 && | |
cca32e9a PZ |
2796 | partitioning == prev_partitioning && |
2797 | results->enable_fbc_wm == prev_enable_fbc_wm) | |
801bcfff PZ |
2798 | return; |
2799 | ||
2800 | if (previous.wm_lp[2] != 0) | |
2801 | I915_WRITE(WM3_LP_ILK, 0); | |
2802 | if (previous.wm_lp[1] != 0) | |
2803 | I915_WRITE(WM2_LP_ILK, 0); | |
2804 | if (previous.wm_lp[0] != 0) | |
2805 | I915_WRITE(WM1_LP_ILK, 0); | |
2806 | ||
2807 | if (previous.wm_pipe[0] != results->wm_pipe[0]) | |
2808 | I915_WRITE(WM0_PIPEA_ILK, results->wm_pipe[0]); | |
2809 | if (previous.wm_pipe[1] != results->wm_pipe[1]) | |
2810 | I915_WRITE(WM0_PIPEB_ILK, results->wm_pipe[1]); | |
2811 | if (previous.wm_pipe[2] != results->wm_pipe[2]) | |
2812 | I915_WRITE(WM0_PIPEC_IVB, results->wm_pipe[2]); | |
2813 | ||
2814 | if (previous.wm_linetime[0] != results->wm_linetime[0]) | |
2815 | I915_WRITE(PIPE_WM_LINETIME(PIPE_A), results->wm_linetime[0]); | |
2816 | if (previous.wm_linetime[1] != results->wm_linetime[1]) | |
2817 | I915_WRITE(PIPE_WM_LINETIME(PIPE_B), results->wm_linetime[1]); | |
2818 | if (previous.wm_linetime[2] != results->wm_linetime[2]) | |
2819 | I915_WRITE(PIPE_WM_LINETIME(PIPE_C), results->wm_linetime[2]); | |
2820 | ||
2821 | if (prev_partitioning != partitioning) { | |
2822 | val = I915_READ(WM_MISC); | |
77c122bc | 2823 | if (partitioning == INTEL_DDB_PART_1_2) |
801bcfff PZ |
2824 | val &= ~WM_MISC_DATA_PARTITION_5_6; |
2825 | else | |
2826 | val |= WM_MISC_DATA_PARTITION_5_6; | |
2827 | I915_WRITE(WM_MISC, val); | |
1011d8c4 PZ |
2828 | } |
2829 | ||
cca32e9a PZ |
2830 | if (prev_enable_fbc_wm != results->enable_fbc_wm) { |
2831 | val = I915_READ(DISP_ARB_CTL); | |
2832 | if (results->enable_fbc_wm) | |
2833 | val &= ~DISP_FBC_WM_DIS; | |
2834 | else | |
2835 | val |= DISP_FBC_WM_DIS; | |
2836 | I915_WRITE(DISP_ARB_CTL, val); | |
2837 | } | |
2838 | ||
801bcfff PZ |
2839 | if (previous.wm_lp_spr[0] != results->wm_lp_spr[0]) |
2840 | I915_WRITE(WM1S_LP_ILK, results->wm_lp_spr[0]); | |
2841 | if (previous.wm_lp_spr[1] != results->wm_lp_spr[1]) | |
2842 | I915_WRITE(WM2S_LP_IVB, results->wm_lp_spr[1]); | |
2843 | if (previous.wm_lp_spr[2] != results->wm_lp_spr[2]) | |
2844 | I915_WRITE(WM3S_LP_IVB, results->wm_lp_spr[2]); | |
2845 | ||
2846 | if (results->wm_lp[0] != 0) | |
2847 | I915_WRITE(WM1_LP_ILK, results->wm_lp[0]); | |
2848 | if (results->wm_lp[1] != 0) | |
2849 | I915_WRITE(WM2_LP_ILK, results->wm_lp[1]); | |
2850 | if (results->wm_lp[2] != 0) | |
2851 | I915_WRITE(WM3_LP_ILK, results->wm_lp[2]); | |
2852 | } | |
2853 | ||
46ba614c | 2854 | static void haswell_update_wm(struct drm_crtc *crtc) |
801bcfff | 2855 | { |
46ba614c | 2856 | struct drm_device *dev = crtc->dev; |
801bcfff | 2857 | struct drm_i915_private *dev_priv = dev->dev_private; |
861f3389 | 2858 | struct hsw_wm_maximums lp_max_1_2, lp_max_5_6; |
801bcfff | 2859 | struct hsw_pipe_wm_parameters params[3]; |
861f3389 | 2860 | struct hsw_wm_values results_1_2, results_5_6, *best_results; |
77c122bc | 2861 | enum intel_ddb_partitioning partitioning; |
861f3389 | 2862 | |
12b134df | 2863 | hsw_compute_wm_parameters(dev, params, &lp_max_1_2, &lp_max_5_6); |
861f3389 | 2864 | |
53615a5e | 2865 | hsw_compute_wm_results(dev, params, |
53615a5e | 2866 | &lp_max_1_2, &results_1_2); |
861f3389 | 2867 | if (lp_max_1_2.pri != lp_max_5_6.pri) { |
53615a5e | 2868 | hsw_compute_wm_results(dev, params, |
53615a5e | 2869 | &lp_max_5_6, &results_5_6); |
861f3389 PZ |
2870 | best_results = hsw_find_best_result(&results_1_2, &results_5_6); |
2871 | } else { | |
2872 | best_results = &results_1_2; | |
2873 | } | |
2874 | ||
2875 | partitioning = (best_results == &results_1_2) ? | |
77c122bc | 2876 | INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6; |
801bcfff | 2877 | |
861f3389 | 2878 | hsw_write_wm_values(dev_priv, best_results, partitioning); |
1011d8c4 PZ |
2879 | } |
2880 | ||
adf3d35e VS |
2881 | static void haswell_update_sprite_wm(struct drm_plane *plane, |
2882 | struct drm_crtc *crtc, | |
526682e9 | 2883 | uint32_t sprite_width, int pixel_size, |
bdd57d03 | 2884 | bool enabled, bool scaled) |
526682e9 | 2885 | { |
adf3d35e | 2886 | struct intel_plane *intel_plane = to_intel_plane(plane); |
526682e9 | 2887 | |
adf3d35e VS |
2888 | intel_plane->wm.enabled = enabled; |
2889 | intel_plane->wm.scaled = scaled; | |
2890 | intel_plane->wm.horiz_pixels = sprite_width; | |
2891 | intel_plane->wm.bytes_per_pixel = pixel_size; | |
526682e9 | 2892 | |
46ba614c | 2893 | haswell_update_wm(crtc); |
526682e9 PZ |
2894 | } |
2895 | ||
b445e3b0 ED |
2896 | static bool |
2897 | sandybridge_compute_sprite_wm(struct drm_device *dev, int plane, | |
2898 | uint32_t sprite_width, int pixel_size, | |
2899 | const struct intel_watermark_params *display, | |
2900 | int display_latency_ns, int *sprite_wm) | |
2901 | { | |
2902 | struct drm_crtc *crtc; | |
2903 | int clock; | |
2904 | int entries, tlb_miss; | |
2905 | ||
2906 | crtc = intel_get_crtc_for_plane(dev, plane); | |
3490ea5d | 2907 | if (!intel_crtc_active(crtc)) { |
b445e3b0 ED |
2908 | *sprite_wm = display->guard_size; |
2909 | return false; | |
2910 | } | |
2911 | ||
2912 | clock = crtc->mode.clock; | |
2913 | ||
2914 | /* Use the small buffer method to calculate the sprite watermark */ | |
2915 | entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000; | |
2916 | tlb_miss = display->fifo_size*display->cacheline_size - | |
2917 | sprite_width * 8; | |
2918 | if (tlb_miss > 0) | |
2919 | entries += tlb_miss; | |
2920 | entries = DIV_ROUND_UP(entries, display->cacheline_size); | |
2921 | *sprite_wm = entries + display->guard_size; | |
2922 | if (*sprite_wm > (int)display->max_wm) | |
2923 | *sprite_wm = display->max_wm; | |
2924 | ||
2925 | return true; | |
2926 | } | |
2927 | ||
2928 | static bool | |
2929 | sandybridge_compute_sprite_srwm(struct drm_device *dev, int plane, | |
2930 | uint32_t sprite_width, int pixel_size, | |
2931 | const struct intel_watermark_params *display, | |
2932 | int latency_ns, int *sprite_wm) | |
2933 | { | |
2934 | struct drm_crtc *crtc; | |
2935 | unsigned long line_time_us; | |
2936 | int clock; | |
2937 | int line_count, line_size; | |
2938 | int small, large; | |
2939 | int entries; | |
2940 | ||
2941 | if (!latency_ns) { | |
2942 | *sprite_wm = 0; | |
2943 | return false; | |
2944 | } | |
2945 | ||
2946 | crtc = intel_get_crtc_for_plane(dev, plane); | |
2947 | clock = crtc->mode.clock; | |
2948 | if (!clock) { | |
2949 | *sprite_wm = 0; | |
2950 | return false; | |
2951 | } | |
2952 | ||
2953 | line_time_us = (sprite_width * 1000) / clock; | |
2954 | if (!line_time_us) { | |
2955 | *sprite_wm = 0; | |
2956 | return false; | |
2957 | } | |
2958 | ||
2959 | line_count = (latency_ns / line_time_us + 1000) / 1000; | |
2960 | line_size = sprite_width * pixel_size; | |
2961 | ||
2962 | /* Use the minimum of the small and large buffer method for primary */ | |
2963 | small = ((clock * pixel_size / 1000) * latency_ns) / 1000; | |
2964 | large = line_count * line_size; | |
2965 | ||
2966 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); | |
2967 | *sprite_wm = entries + display->guard_size; | |
2968 | ||
2969 | return *sprite_wm > 0x3ff ? false : true; | |
2970 | } | |
2971 | ||
adf3d35e VS |
2972 | static void sandybridge_update_sprite_wm(struct drm_plane *plane, |
2973 | struct drm_crtc *crtc, | |
4c4ff43a | 2974 | uint32_t sprite_width, int pixel_size, |
39db4a4d | 2975 | bool enabled, bool scaled) |
b445e3b0 | 2976 | { |
adf3d35e | 2977 | struct drm_device *dev = plane->dev; |
b445e3b0 | 2978 | struct drm_i915_private *dev_priv = dev->dev_private; |
adf3d35e | 2979 | int pipe = to_intel_plane(plane)->pipe; |
b0aea5dc | 2980 | int latency = dev_priv->wm.spr_latency[0] * 100; /* In unit 0.1us */ |
b445e3b0 ED |
2981 | u32 val; |
2982 | int sprite_wm, reg; | |
2983 | int ret; | |
2984 | ||
39db4a4d | 2985 | if (!enabled) |
4c4ff43a PZ |
2986 | return; |
2987 | ||
b445e3b0 ED |
2988 | switch (pipe) { |
2989 | case 0: | |
2990 | reg = WM0_PIPEA_ILK; | |
2991 | break; | |
2992 | case 1: | |
2993 | reg = WM0_PIPEB_ILK; | |
2994 | break; | |
2995 | case 2: | |
2996 | reg = WM0_PIPEC_IVB; | |
2997 | break; | |
2998 | default: | |
2999 | return; /* bad pipe */ | |
3000 | } | |
3001 | ||
3002 | ret = sandybridge_compute_sprite_wm(dev, pipe, sprite_width, pixel_size, | |
3003 | &sandybridge_display_wm_info, | |
3004 | latency, &sprite_wm); | |
3005 | if (!ret) { | |
84f44ce7 VS |
3006 | DRM_DEBUG_KMS("failed to compute sprite wm for pipe %c\n", |
3007 | pipe_name(pipe)); | |
b445e3b0 ED |
3008 | return; |
3009 | } | |
3010 | ||
3011 | val = I915_READ(reg); | |
3012 | val &= ~WM0_PIPE_SPRITE_MASK; | |
3013 | I915_WRITE(reg, val | (sprite_wm << WM0_PIPE_SPRITE_SHIFT)); | |
84f44ce7 | 3014 | DRM_DEBUG_KMS("sprite watermarks For pipe %c - %d\n", pipe_name(pipe), sprite_wm); |
b445e3b0 ED |
3015 | |
3016 | ||
3017 | ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width, | |
3018 | pixel_size, | |
3019 | &sandybridge_display_srwm_info, | |
b0aea5dc | 3020 | dev_priv->wm.spr_latency[1] * 500, |
b445e3b0 ED |
3021 | &sprite_wm); |
3022 | if (!ret) { | |
84f44ce7 VS |
3023 | DRM_DEBUG_KMS("failed to compute sprite lp1 wm on pipe %c\n", |
3024 | pipe_name(pipe)); | |
b445e3b0 ED |
3025 | return; |
3026 | } | |
3027 | I915_WRITE(WM1S_LP_ILK, sprite_wm); | |
3028 | ||
3029 | /* Only IVB has two more LP watermarks for sprite */ | |
3030 | if (!IS_IVYBRIDGE(dev)) | |
3031 | return; | |
3032 | ||
3033 | ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width, | |
3034 | pixel_size, | |
3035 | &sandybridge_display_srwm_info, | |
b0aea5dc | 3036 | dev_priv->wm.spr_latency[2] * 500, |
b445e3b0 ED |
3037 | &sprite_wm); |
3038 | if (!ret) { | |
84f44ce7 VS |
3039 | DRM_DEBUG_KMS("failed to compute sprite lp2 wm on pipe %c\n", |
3040 | pipe_name(pipe)); | |
b445e3b0 ED |
3041 | return; |
3042 | } | |
3043 | I915_WRITE(WM2S_LP_IVB, sprite_wm); | |
3044 | ||
3045 | ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width, | |
3046 | pixel_size, | |
3047 | &sandybridge_display_srwm_info, | |
b0aea5dc | 3048 | dev_priv->wm.spr_latency[3] * 500, |
b445e3b0 ED |
3049 | &sprite_wm); |
3050 | if (!ret) { | |
84f44ce7 VS |
3051 | DRM_DEBUG_KMS("failed to compute sprite lp3 wm on pipe %c\n", |
3052 | pipe_name(pipe)); | |
b445e3b0 ED |
3053 | return; |
3054 | } | |
3055 | I915_WRITE(WM3S_LP_IVB, sprite_wm); | |
3056 | } | |
3057 | ||
3058 | /** | |
3059 | * intel_update_watermarks - update FIFO watermark values based on current modes | |
3060 | * | |
3061 | * Calculate watermark values for the various WM regs based on current mode | |
3062 | * and plane configuration. | |
3063 | * | |
3064 | * There are several cases to deal with here: | |
3065 | * - normal (i.e. non-self-refresh) | |
3066 | * - self-refresh (SR) mode | |
3067 | * - lines are large relative to FIFO size (buffer can hold up to 2) | |
3068 | * - lines are small relative to FIFO size (buffer can hold more than 2 | |
3069 | * lines), so need to account for TLB latency | |
3070 | * | |
3071 | * The normal calculation is: | |
3072 | * watermark = dotclock * bytes per pixel * latency | |
3073 | * where latency is platform & configuration dependent (we assume pessimal | |
3074 | * values here). | |
3075 | * | |
3076 | * The SR calculation is: | |
3077 | * watermark = (trunc(latency/line time)+1) * surface width * | |
3078 | * bytes per pixel | |
3079 | * where | |
3080 | * line time = htotal / dotclock | |
3081 | * surface width = hdisplay for normal plane and 64 for cursor | |
3082 | * and latency is assumed to be high, as above. | |
3083 | * | |
3084 | * The final value programmed to the register should always be rounded up, | |
3085 | * and include an extra 2 entries to account for clock crossings. | |
3086 | * | |
3087 | * We don't use the sprite, so we can ignore that. And on Crestline we have | |
3088 | * to set the non-SR watermarks to 8. | |
3089 | */ | |
46ba614c | 3090 | void intel_update_watermarks(struct drm_crtc *crtc) |
b445e3b0 | 3091 | { |
46ba614c | 3092 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; |
b445e3b0 ED |
3093 | |
3094 | if (dev_priv->display.update_wm) | |
46ba614c | 3095 | dev_priv->display.update_wm(crtc); |
b445e3b0 ED |
3096 | } |
3097 | ||
adf3d35e VS |
3098 | void intel_update_sprite_watermarks(struct drm_plane *plane, |
3099 | struct drm_crtc *crtc, | |
4c4ff43a | 3100 | uint32_t sprite_width, int pixel_size, |
39db4a4d | 3101 | bool enabled, bool scaled) |
b445e3b0 | 3102 | { |
adf3d35e | 3103 | struct drm_i915_private *dev_priv = plane->dev->dev_private; |
b445e3b0 ED |
3104 | |
3105 | if (dev_priv->display.update_sprite_wm) | |
adf3d35e | 3106 | dev_priv->display.update_sprite_wm(plane, crtc, sprite_width, |
39db4a4d | 3107 | pixel_size, enabled, scaled); |
b445e3b0 ED |
3108 | } |
3109 | ||
2b4e57bd ED |
3110 | static struct drm_i915_gem_object * |
3111 | intel_alloc_context_page(struct drm_device *dev) | |
3112 | { | |
3113 | struct drm_i915_gem_object *ctx; | |
3114 | int ret; | |
3115 | ||
3116 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); | |
3117 | ||
3118 | ctx = i915_gem_alloc_object(dev, 4096); | |
3119 | if (!ctx) { | |
3120 | DRM_DEBUG("failed to alloc power context, RC6 disabled\n"); | |
3121 | return NULL; | |
3122 | } | |
3123 | ||
c37e2204 | 3124 | ret = i915_gem_obj_ggtt_pin(ctx, 4096, true, false); |
2b4e57bd ED |
3125 | if (ret) { |
3126 | DRM_ERROR("failed to pin power context: %d\n", ret); | |
3127 | goto err_unref; | |
3128 | } | |
3129 | ||
3130 | ret = i915_gem_object_set_to_gtt_domain(ctx, 1); | |
3131 | if (ret) { | |
3132 | DRM_ERROR("failed to set-domain on power context: %d\n", ret); | |
3133 | goto err_unpin; | |
3134 | } | |
3135 | ||
3136 | return ctx; | |
3137 | ||
3138 | err_unpin: | |
3139 | i915_gem_object_unpin(ctx); | |
3140 | err_unref: | |
3141 | drm_gem_object_unreference(&ctx->base); | |
2b4e57bd ED |
3142 | return NULL; |
3143 | } | |
3144 | ||
9270388e DV |
3145 | /** |
3146 | * Lock protecting IPS related data structures | |
9270388e DV |
3147 | */ |
3148 | DEFINE_SPINLOCK(mchdev_lock); | |
3149 | ||
3150 | /* Global for IPS driver to get at the current i915 device. Protected by | |
3151 | * mchdev_lock. */ | |
3152 | static struct drm_i915_private *i915_mch_dev; | |
3153 | ||
2b4e57bd ED |
3154 | bool ironlake_set_drps(struct drm_device *dev, u8 val) |
3155 | { | |
3156 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3157 | u16 rgvswctl; | |
3158 | ||
9270388e DV |
3159 | assert_spin_locked(&mchdev_lock); |
3160 | ||
2b4e57bd ED |
3161 | rgvswctl = I915_READ16(MEMSWCTL); |
3162 | if (rgvswctl & MEMCTL_CMD_STS) { | |
3163 | DRM_DEBUG("gpu busy, RCS change rejected\n"); | |
3164 | return false; /* still busy with another command */ | |
3165 | } | |
3166 | ||
3167 | rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | | |
3168 | (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; | |
3169 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
3170 | POSTING_READ16(MEMSWCTL); | |
3171 | ||
3172 | rgvswctl |= MEMCTL_CMD_STS; | |
3173 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
3174 | ||
3175 | return true; | |
3176 | } | |
3177 | ||
8090c6b9 | 3178 | static void ironlake_enable_drps(struct drm_device *dev) |
2b4e57bd ED |
3179 | { |
3180 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3181 | u32 rgvmodectl = I915_READ(MEMMODECTL); | |
3182 | u8 fmax, fmin, fstart, vstart; | |
3183 | ||
9270388e DV |
3184 | spin_lock_irq(&mchdev_lock); |
3185 | ||
2b4e57bd ED |
3186 | /* Enable temp reporting */ |
3187 | I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN); | |
3188 | I915_WRITE16(TSC1, I915_READ(TSC1) | TSE); | |
3189 | ||
3190 | /* 100ms RC evaluation intervals */ | |
3191 | I915_WRITE(RCUPEI, 100000); | |
3192 | I915_WRITE(RCDNEI, 100000); | |
3193 | ||
3194 | /* Set max/min thresholds to 90ms and 80ms respectively */ | |
3195 | I915_WRITE(RCBMAXAVG, 90000); | |
3196 | I915_WRITE(RCBMINAVG, 80000); | |
3197 | ||
3198 | I915_WRITE(MEMIHYST, 1); | |
3199 | ||
3200 | /* Set up min, max, and cur for interrupt handling */ | |
3201 | fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT; | |
3202 | fmin = (rgvmodectl & MEMMODE_FMIN_MASK); | |
3203 | fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >> | |
3204 | MEMMODE_FSTART_SHIFT; | |
3205 | ||
3206 | vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >> | |
3207 | PXVFREQ_PX_SHIFT; | |
3208 | ||
20e4d407 DV |
3209 | dev_priv->ips.fmax = fmax; /* IPS callback will increase this */ |
3210 | dev_priv->ips.fstart = fstart; | |
2b4e57bd | 3211 | |
20e4d407 DV |
3212 | dev_priv->ips.max_delay = fstart; |
3213 | dev_priv->ips.min_delay = fmin; | |
3214 | dev_priv->ips.cur_delay = fstart; | |
2b4e57bd ED |
3215 | |
3216 | DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n", | |
3217 | fmax, fmin, fstart); | |
3218 | ||
3219 | I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN); | |
3220 | ||
3221 | /* | |
3222 | * Interrupts will be enabled in ironlake_irq_postinstall | |
3223 | */ | |
3224 | ||
3225 | I915_WRITE(VIDSTART, vstart); | |
3226 | POSTING_READ(VIDSTART); | |
3227 | ||
3228 | rgvmodectl |= MEMMODE_SWMODE_EN; | |
3229 | I915_WRITE(MEMMODECTL, rgvmodectl); | |
3230 | ||
9270388e | 3231 | if (wait_for_atomic((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10)) |
2b4e57bd | 3232 | DRM_ERROR("stuck trying to change perf mode\n"); |
9270388e | 3233 | mdelay(1); |
2b4e57bd ED |
3234 | |
3235 | ironlake_set_drps(dev, fstart); | |
3236 | ||
20e4d407 | 3237 | dev_priv->ips.last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) + |
2b4e57bd | 3238 | I915_READ(0x112e0); |
20e4d407 DV |
3239 | dev_priv->ips.last_time1 = jiffies_to_msecs(jiffies); |
3240 | dev_priv->ips.last_count2 = I915_READ(0x112f4); | |
3241 | getrawmonotonic(&dev_priv->ips.last_time2); | |
9270388e DV |
3242 | |
3243 | spin_unlock_irq(&mchdev_lock); | |
2b4e57bd ED |
3244 | } |
3245 | ||
8090c6b9 | 3246 | static void ironlake_disable_drps(struct drm_device *dev) |
2b4e57bd ED |
3247 | { |
3248 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9270388e DV |
3249 | u16 rgvswctl; |
3250 | ||
3251 | spin_lock_irq(&mchdev_lock); | |
3252 | ||
3253 | rgvswctl = I915_READ16(MEMSWCTL); | |
2b4e57bd ED |
3254 | |
3255 | /* Ack interrupts, disable EFC interrupt */ | |
3256 | I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN); | |
3257 | I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG); | |
3258 | I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT); | |
3259 | I915_WRITE(DEIIR, DE_PCU_EVENT); | |
3260 | I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT); | |
3261 | ||
3262 | /* Go back to the starting frequency */ | |
20e4d407 | 3263 | ironlake_set_drps(dev, dev_priv->ips.fstart); |
9270388e | 3264 | mdelay(1); |
2b4e57bd ED |
3265 | rgvswctl |= MEMCTL_CMD_STS; |
3266 | I915_WRITE(MEMSWCTL, rgvswctl); | |
9270388e | 3267 | mdelay(1); |
2b4e57bd | 3268 | |
9270388e | 3269 | spin_unlock_irq(&mchdev_lock); |
2b4e57bd ED |
3270 | } |
3271 | ||
acbe9475 DV |
3272 | /* There's a funny hw issue where the hw returns all 0 when reading from |
3273 | * GEN6_RP_INTERRUPT_LIMITS. Hence we always need to compute the desired value | |
3274 | * ourselves, instead of doing a rmw cycle (which might result in us clearing | |
3275 | * all limits and the gpu stuck at whatever frequency it is at atm). | |
3276 | */ | |
65bccb5c | 3277 | static u32 gen6_rps_limits(struct drm_i915_private *dev_priv, u8 *val) |
2b4e57bd | 3278 | { |
7b9e0ae6 | 3279 | u32 limits; |
2b4e57bd | 3280 | |
7b9e0ae6 | 3281 | limits = 0; |
c6a828d3 DV |
3282 | |
3283 | if (*val >= dev_priv->rps.max_delay) | |
3284 | *val = dev_priv->rps.max_delay; | |
3285 | limits |= dev_priv->rps.max_delay << 24; | |
20b46e59 DV |
3286 | |
3287 | /* Only set the down limit when we've reached the lowest level to avoid | |
3288 | * getting more interrupts, otherwise leave this clear. This prevents a | |
3289 | * race in the hw when coming out of rc6: There's a tiny window where | |
3290 | * the hw runs at the minimal clock before selecting the desired | |
3291 | * frequency, if the down threshold expires in that window we will not | |
3292 | * receive a down interrupt. */ | |
c6a828d3 DV |
3293 | if (*val <= dev_priv->rps.min_delay) { |
3294 | *val = dev_priv->rps.min_delay; | |
3295 | limits |= dev_priv->rps.min_delay << 16; | |
20b46e59 DV |
3296 | } |
3297 | ||
3298 | return limits; | |
3299 | } | |
3300 | ||
3301 | void gen6_set_rps(struct drm_device *dev, u8 val) | |
3302 | { | |
3303 | struct drm_i915_private *dev_priv = dev->dev_private; | |
65bccb5c | 3304 | u32 limits = gen6_rps_limits(dev_priv, &val); |
7b9e0ae6 | 3305 | |
4fc688ce | 3306 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79249636 BW |
3307 | WARN_ON(val > dev_priv->rps.max_delay); |
3308 | WARN_ON(val < dev_priv->rps.min_delay); | |
004777cb | 3309 | |
c6a828d3 | 3310 | if (val == dev_priv->rps.cur_delay) |
7b9e0ae6 CW |
3311 | return; |
3312 | ||
92bd1bf0 RV |
3313 | if (IS_HASWELL(dev)) |
3314 | I915_WRITE(GEN6_RPNSWREQ, | |
3315 | HSW_FREQUENCY(val)); | |
3316 | else | |
3317 | I915_WRITE(GEN6_RPNSWREQ, | |
3318 | GEN6_FREQUENCY(val) | | |
3319 | GEN6_OFFSET(0) | | |
3320 | GEN6_AGGRESSIVE_TURBO); | |
7b9e0ae6 CW |
3321 | |
3322 | /* Make sure we continue to get interrupts | |
3323 | * until we hit the minimum or maximum frequencies. | |
3324 | */ | |
3325 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, limits); | |
3326 | ||
d5570a72 BW |
3327 | POSTING_READ(GEN6_RPNSWREQ); |
3328 | ||
c6a828d3 | 3329 | dev_priv->rps.cur_delay = val; |
be2cde9a DV |
3330 | |
3331 | trace_intel_gpu_freq_change(val * 50); | |
2b4e57bd ED |
3332 | } |
3333 | ||
80814ae4 VS |
3334 | /* |
3335 | * Wait until the previous freq change has completed, | |
3336 | * or the timeout elapsed, and then update our notion | |
3337 | * of the current GPU frequency. | |
3338 | */ | |
3339 | static void vlv_update_rps_cur_delay(struct drm_i915_private *dev_priv) | |
3340 | { | |
80814ae4 VS |
3341 | u32 pval; |
3342 | ||
3343 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
3344 | ||
e8474409 VS |
3345 | if (wait_for(((pval = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS)) & GENFREQSTATUS) == 0, 10)) |
3346 | DRM_DEBUG_DRIVER("timed out waiting for Punit\n"); | |
80814ae4 VS |
3347 | |
3348 | pval >>= 8; | |
3349 | ||
3350 | if (pval != dev_priv->rps.cur_delay) | |
3351 | DRM_DEBUG_DRIVER("Punit overrode GPU freq: %d MHz (%u) requested, but got %d Mhz (%u)\n", | |
3352 | vlv_gpu_freq(dev_priv->mem_freq, dev_priv->rps.cur_delay), | |
3353 | dev_priv->rps.cur_delay, | |
3354 | vlv_gpu_freq(dev_priv->mem_freq, pval), pval); | |
3355 | ||
3356 | dev_priv->rps.cur_delay = pval; | |
3357 | } | |
3358 | ||
0a073b84 JB |
3359 | void valleyview_set_rps(struct drm_device *dev, u8 val) |
3360 | { | |
3361 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7a67092a VS |
3362 | |
3363 | gen6_rps_limits(dev_priv, &val); | |
0a073b84 JB |
3364 | |
3365 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
3366 | WARN_ON(val > dev_priv->rps.max_delay); | |
3367 | WARN_ON(val < dev_priv->rps.min_delay); | |
3368 | ||
80814ae4 VS |
3369 | vlv_update_rps_cur_delay(dev_priv); |
3370 | ||
73008b98 | 3371 | DRM_DEBUG_DRIVER("GPU freq request from %d MHz (%u) to %d MHz (%u)\n", |
0a073b84 JB |
3372 | vlv_gpu_freq(dev_priv->mem_freq, |
3373 | dev_priv->rps.cur_delay), | |
73008b98 VS |
3374 | dev_priv->rps.cur_delay, |
3375 | vlv_gpu_freq(dev_priv->mem_freq, val), val); | |
0a073b84 JB |
3376 | |
3377 | if (val == dev_priv->rps.cur_delay) | |
3378 | return; | |
3379 | ||
ae99258f | 3380 | vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val); |
0a073b84 | 3381 | |
80814ae4 | 3382 | dev_priv->rps.cur_delay = val; |
0a073b84 JB |
3383 | |
3384 | trace_intel_gpu_freq_change(vlv_gpu_freq(dev_priv->mem_freq, val)); | |
3385 | } | |
3386 | ||
44fc7d5c | 3387 | static void gen6_disable_rps_interrupts(struct drm_device *dev) |
2b4e57bd ED |
3388 | { |
3389 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3390 | ||
2b4e57bd | 3391 | I915_WRITE(GEN6_PMINTRMSK, 0xffffffff); |
4848405c | 3392 | I915_WRITE(GEN6_PMIER, I915_READ(GEN6_PMIER) & ~GEN6_PM_RPS_EVENTS); |
2b4e57bd ED |
3393 | /* Complete PM interrupt masking here doesn't race with the rps work |
3394 | * item again unmasking PM interrupts because that is using a different | |
3395 | * register (PMIMR) to mask PM interrupts. The only risk is in leaving | |
3396 | * stale bits in PMIIR and PMIMR which gen6_enable_rps will clean up. */ | |
3397 | ||
59cdb63d | 3398 | spin_lock_irq(&dev_priv->irq_lock); |
c6a828d3 | 3399 | dev_priv->rps.pm_iir = 0; |
59cdb63d | 3400 | spin_unlock_irq(&dev_priv->irq_lock); |
2b4e57bd | 3401 | |
4848405c | 3402 | I915_WRITE(GEN6_PMIIR, GEN6_PM_RPS_EVENTS); |
2b4e57bd ED |
3403 | } |
3404 | ||
44fc7d5c | 3405 | static void gen6_disable_rps(struct drm_device *dev) |
d20d4f0c JB |
3406 | { |
3407 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3408 | ||
3409 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
44fc7d5c | 3410 | I915_WRITE(GEN6_RPNSWREQ, 1 << 31); |
d20d4f0c | 3411 | |
44fc7d5c DV |
3412 | gen6_disable_rps_interrupts(dev); |
3413 | } | |
3414 | ||
3415 | static void valleyview_disable_rps(struct drm_device *dev) | |
3416 | { | |
3417 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3418 | ||
3419 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
d20d4f0c | 3420 | |
44fc7d5c | 3421 | gen6_disable_rps_interrupts(dev); |
c9cddffc JB |
3422 | |
3423 | if (dev_priv->vlv_pctx) { | |
3424 | drm_gem_object_unreference(&dev_priv->vlv_pctx->base); | |
3425 | dev_priv->vlv_pctx = NULL; | |
3426 | } | |
d20d4f0c JB |
3427 | } |
3428 | ||
2b4e57bd ED |
3429 | int intel_enable_rc6(const struct drm_device *dev) |
3430 | { | |
eb4926e4 DL |
3431 | /* No RC6 before Ironlake */ |
3432 | if (INTEL_INFO(dev)->gen < 5) | |
3433 | return 0; | |
3434 | ||
456470eb | 3435 | /* Respect the kernel parameter if it is set */ |
2b4e57bd ED |
3436 | if (i915_enable_rc6 >= 0) |
3437 | return i915_enable_rc6; | |
3438 | ||
6567d748 CW |
3439 | /* Disable RC6 on Ironlake */ |
3440 | if (INTEL_INFO(dev)->gen == 5) | |
3441 | return 0; | |
2b4e57bd | 3442 | |
456470eb DV |
3443 | if (IS_HASWELL(dev)) { |
3444 | DRM_DEBUG_DRIVER("Haswell: only RC6 available\n"); | |
4a637c2c | 3445 | return INTEL_RC6_ENABLE; |
456470eb | 3446 | } |
2b4e57bd | 3447 | |
456470eb | 3448 | /* snb/ivb have more than one rc6 state. */ |
2b4e57bd ED |
3449 | if (INTEL_INFO(dev)->gen == 6) { |
3450 | DRM_DEBUG_DRIVER("Sandybridge: deep RC6 disabled\n"); | |
3451 | return INTEL_RC6_ENABLE; | |
3452 | } | |
456470eb | 3453 | |
2b4e57bd ED |
3454 | DRM_DEBUG_DRIVER("RC6 and deep RC6 enabled\n"); |
3455 | return (INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE); | |
3456 | } | |
3457 | ||
44fc7d5c DV |
3458 | static void gen6_enable_rps_interrupts(struct drm_device *dev) |
3459 | { | |
3460 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a9c1f90c | 3461 | u32 enabled_intrs; |
44fc7d5c DV |
3462 | |
3463 | spin_lock_irq(&dev_priv->irq_lock); | |
a0b3335a | 3464 | WARN_ON(dev_priv->rps.pm_iir); |
edbfdb45 | 3465 | snb_enable_pm_irq(dev_priv, GEN6_PM_RPS_EVENTS); |
44fc7d5c DV |
3466 | I915_WRITE(GEN6_PMIIR, GEN6_PM_RPS_EVENTS); |
3467 | spin_unlock_irq(&dev_priv->irq_lock); | |
a9c1f90c | 3468 | |
fd547d25 | 3469 | /* only unmask PM interrupts we need. Mask all others. */ |
a9c1f90c MK |
3470 | enabled_intrs = GEN6_PM_RPS_EVENTS; |
3471 | ||
3472 | /* IVB and SNB hard hangs on looping batchbuffer | |
3473 | * if GEN6_PM_UP_EI_EXPIRED is masked. | |
3474 | */ | |
3475 | if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev)) | |
3476 | enabled_intrs |= GEN6_PM_RP_UP_EI_EXPIRED; | |
3477 | ||
3478 | I915_WRITE(GEN6_PMINTRMSK, ~enabled_intrs); | |
44fc7d5c DV |
3479 | } |
3480 | ||
79f5b2c7 | 3481 | static void gen6_enable_rps(struct drm_device *dev) |
2b4e57bd | 3482 | { |
79f5b2c7 | 3483 | struct drm_i915_private *dev_priv = dev->dev_private; |
b4519513 | 3484 | struct intel_ring_buffer *ring; |
7b9e0ae6 CW |
3485 | u32 rp_state_cap; |
3486 | u32 gt_perf_status; | |
31643d54 | 3487 | u32 rc6vids, pcu_mbox, rc6_mask = 0; |
2b4e57bd | 3488 | u32 gtfifodbg; |
2b4e57bd | 3489 | int rc6_mode; |
42c0526c | 3490 | int i, ret; |
2b4e57bd | 3491 | |
4fc688ce | 3492 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 3493 | |
2b4e57bd ED |
3494 | /* Here begins a magic sequence of register writes to enable |
3495 | * auto-downclocking. | |
3496 | * | |
3497 | * Perhaps there might be some value in exposing these to | |
3498 | * userspace... | |
3499 | */ | |
3500 | I915_WRITE(GEN6_RC_STATE, 0); | |
2b4e57bd ED |
3501 | |
3502 | /* Clear the DBG now so we don't confuse earlier errors */ | |
3503 | if ((gtfifodbg = I915_READ(GTFIFODBG))) { | |
3504 | DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg); | |
3505 | I915_WRITE(GTFIFODBG, gtfifodbg); | |
3506 | } | |
3507 | ||
3508 | gen6_gt_force_wake_get(dev_priv); | |
3509 | ||
7b9e0ae6 CW |
3510 | rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); |
3511 | gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS); | |
3512 | ||
31c77388 BW |
3513 | /* In units of 50MHz */ |
3514 | dev_priv->rps.hw_max = dev_priv->rps.max_delay = rp_state_cap & 0xff; | |
c6a828d3 DV |
3515 | dev_priv->rps.min_delay = (rp_state_cap & 0xff0000) >> 16; |
3516 | dev_priv->rps.cur_delay = 0; | |
7b9e0ae6 | 3517 | |
2b4e57bd ED |
3518 | /* disable the counters and set deterministic thresholds */ |
3519 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
3520 | ||
3521 | I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16); | |
3522 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30); | |
3523 | I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30); | |
3524 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
3525 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
3526 | ||
b4519513 CW |
3527 | for_each_ring(ring, dev_priv, i) |
3528 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
2b4e57bd ED |
3529 | |
3530 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
3531 | I915_WRITE(GEN6_RC1e_THRESHOLD, 1000); | |
351aa566 SM |
3532 | if (INTEL_INFO(dev)->gen <= 6 || IS_IVYBRIDGE(dev)) |
3533 | I915_WRITE(GEN6_RC6_THRESHOLD, 125000); | |
3534 | else | |
3535 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); | |
0920a487 | 3536 | I915_WRITE(GEN6_RC6p_THRESHOLD, 150000); |
2b4e57bd ED |
3537 | I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */ |
3538 | ||
5a7dc92a | 3539 | /* Check if we are enabling RC6 */ |
2b4e57bd ED |
3540 | rc6_mode = intel_enable_rc6(dev_priv->dev); |
3541 | if (rc6_mode & INTEL_RC6_ENABLE) | |
3542 | rc6_mask |= GEN6_RC_CTL_RC6_ENABLE; | |
3543 | ||
5a7dc92a ED |
3544 | /* We don't use those on Haswell */ |
3545 | if (!IS_HASWELL(dev)) { | |
3546 | if (rc6_mode & INTEL_RC6p_ENABLE) | |
3547 | rc6_mask |= GEN6_RC_CTL_RC6p_ENABLE; | |
2b4e57bd | 3548 | |
5a7dc92a ED |
3549 | if (rc6_mode & INTEL_RC6pp_ENABLE) |
3550 | rc6_mask |= GEN6_RC_CTL_RC6pp_ENABLE; | |
3551 | } | |
2b4e57bd ED |
3552 | |
3553 | DRM_INFO("Enabling RC6 states: RC6 %s, RC6p %s, RC6pp %s\n", | |
5a7dc92a ED |
3554 | (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off", |
3555 | (rc6_mask & GEN6_RC_CTL_RC6p_ENABLE) ? "on" : "off", | |
3556 | (rc6_mask & GEN6_RC_CTL_RC6pp_ENABLE) ? "on" : "off"); | |
2b4e57bd ED |
3557 | |
3558 | I915_WRITE(GEN6_RC_CONTROL, | |
3559 | rc6_mask | | |
3560 | GEN6_RC_CTL_EI_MODE(1) | | |
3561 | GEN6_RC_CTL_HW_ENABLE); | |
3562 | ||
92bd1bf0 RV |
3563 | if (IS_HASWELL(dev)) { |
3564 | I915_WRITE(GEN6_RPNSWREQ, | |
3565 | HSW_FREQUENCY(10)); | |
3566 | I915_WRITE(GEN6_RC_VIDEO_FREQ, | |
3567 | HSW_FREQUENCY(12)); | |
3568 | } else { | |
3569 | I915_WRITE(GEN6_RPNSWREQ, | |
3570 | GEN6_FREQUENCY(10) | | |
3571 | GEN6_OFFSET(0) | | |
3572 | GEN6_AGGRESSIVE_TURBO); | |
3573 | I915_WRITE(GEN6_RC_VIDEO_FREQ, | |
3574 | GEN6_FREQUENCY(12)); | |
3575 | } | |
2b4e57bd ED |
3576 | |
3577 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000); | |
3578 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, | |
c6a828d3 DV |
3579 | dev_priv->rps.max_delay << 24 | |
3580 | dev_priv->rps.min_delay << 16); | |
5a7dc92a | 3581 | |
1ee9ae32 DV |
3582 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); |
3583 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); | |
3584 | I915_WRITE(GEN6_RP_UP_EI, 66000); | |
3585 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); | |
5a7dc92a | 3586 | |
2b4e57bd ED |
3587 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); |
3588 | I915_WRITE(GEN6_RP_CONTROL, | |
3589 | GEN6_RP_MEDIA_TURBO | | |
89ba829e | 3590 | GEN6_RP_MEDIA_HW_NORMAL_MODE | |
2b4e57bd ED |
3591 | GEN6_RP_MEDIA_IS_GFX | |
3592 | GEN6_RP_ENABLE | | |
3593 | GEN6_RP_UP_BUSY_AVG | | |
5a7dc92a | 3594 | (IS_HASWELL(dev) ? GEN7_RP_DOWN_IDLE_AVG : GEN6_RP_DOWN_IDLE_CONT)); |
2b4e57bd | 3595 | |
42c0526c | 3596 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_MIN_FREQ_TABLE, 0); |
988b36e5 | 3597 | if (!ret) { |
42c0526c BW |
3598 | pcu_mbox = 0; |
3599 | ret = sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS, &pcu_mbox); | |
a2b3fc01 | 3600 | if (!ret && (pcu_mbox & (1<<31))) { /* OC supported */ |
10e08497 | 3601 | DRM_DEBUG_DRIVER("Overclocking supported. Max: %dMHz, Overclock max: %dMHz\n", |
a2b3fc01 BW |
3602 | (dev_priv->rps.max_delay & 0xff) * 50, |
3603 | (pcu_mbox & 0xff) * 50); | |
31c77388 | 3604 | dev_priv->rps.hw_max = pcu_mbox & 0xff; |
42c0526c BW |
3605 | } |
3606 | } else { | |
3607 | DRM_DEBUG_DRIVER("Failed to set the min frequency\n"); | |
2b4e57bd ED |
3608 | } |
3609 | ||
7b9e0ae6 | 3610 | gen6_set_rps(dev_priv->dev, (gt_perf_status & 0xff00) >> 8); |
2b4e57bd | 3611 | |
44fc7d5c | 3612 | gen6_enable_rps_interrupts(dev); |
2b4e57bd | 3613 | |
31643d54 BW |
3614 | rc6vids = 0; |
3615 | ret = sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids); | |
3616 | if (IS_GEN6(dev) && ret) { | |
3617 | DRM_DEBUG_DRIVER("Couldn't check for BIOS workaround\n"); | |
3618 | } else if (IS_GEN6(dev) && (GEN6_DECODE_RC6_VID(rc6vids & 0xff) < 450)) { | |
3619 | DRM_DEBUG_DRIVER("You should update your BIOS. Correcting minimum rc6 voltage (%dmV->%dmV)\n", | |
3620 | GEN6_DECODE_RC6_VID(rc6vids & 0xff), 450); | |
3621 | rc6vids &= 0xffff00; | |
3622 | rc6vids |= GEN6_ENCODE_RC6_VID(450); | |
3623 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_RC6VIDS, rc6vids); | |
3624 | if (ret) | |
3625 | DRM_ERROR("Couldn't fix incorrect rc6 voltage\n"); | |
3626 | } | |
3627 | ||
2b4e57bd | 3628 | gen6_gt_force_wake_put(dev_priv); |
2b4e57bd ED |
3629 | } |
3630 | ||
c67a470b | 3631 | void gen6_update_ring_freq(struct drm_device *dev) |
2b4e57bd | 3632 | { |
79f5b2c7 | 3633 | struct drm_i915_private *dev_priv = dev->dev_private; |
2b4e57bd | 3634 | int min_freq = 15; |
3ebecd07 CW |
3635 | unsigned int gpu_freq; |
3636 | unsigned int max_ia_freq, min_ring_freq; | |
2b4e57bd ED |
3637 | int scaling_factor = 180; |
3638 | ||
4fc688ce | 3639 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 3640 | |
2b4e57bd ED |
3641 | max_ia_freq = cpufreq_quick_get_max(0); |
3642 | /* | |
3643 | * Default to measured freq if none found, PCU will ensure we don't go | |
3644 | * over | |
3645 | */ | |
3646 | if (!max_ia_freq) | |
3647 | max_ia_freq = tsc_khz; | |
3648 | ||
3649 | /* Convert from kHz to MHz */ | |
3650 | max_ia_freq /= 1000; | |
3651 | ||
3ebecd07 CW |
3652 | min_ring_freq = I915_READ(MCHBAR_MIRROR_BASE_SNB + DCLK); |
3653 | /* convert DDR frequency from units of 133.3MHz to bandwidth */ | |
3654 | min_ring_freq = (2 * 4 * min_ring_freq + 2) / 3; | |
3655 | ||
2b4e57bd ED |
3656 | /* |
3657 | * For each potential GPU frequency, load a ring frequency we'd like | |
3658 | * to use for memory access. We do this by specifying the IA frequency | |
3659 | * the PCU should use as a reference to determine the ring frequency. | |
3660 | */ | |
c6a828d3 | 3661 | for (gpu_freq = dev_priv->rps.max_delay; gpu_freq >= dev_priv->rps.min_delay; |
2b4e57bd | 3662 | gpu_freq--) { |
c6a828d3 | 3663 | int diff = dev_priv->rps.max_delay - gpu_freq; |
3ebecd07 CW |
3664 | unsigned int ia_freq = 0, ring_freq = 0; |
3665 | ||
3666 | if (IS_HASWELL(dev)) { | |
3667 | ring_freq = (gpu_freq * 5 + 3) / 4; | |
3668 | ring_freq = max(min_ring_freq, ring_freq); | |
3669 | /* leave ia_freq as the default, chosen by cpufreq */ | |
3670 | } else { | |
3671 | /* On older processors, there is no separate ring | |
3672 | * clock domain, so in order to boost the bandwidth | |
3673 | * of the ring, we need to upclock the CPU (ia_freq). | |
3674 | * | |
3675 | * For GPU frequencies less than 750MHz, | |
3676 | * just use the lowest ring freq. | |
3677 | */ | |
3678 | if (gpu_freq < min_freq) | |
3679 | ia_freq = 800; | |
3680 | else | |
3681 | ia_freq = max_ia_freq - ((diff * scaling_factor) / 2); | |
3682 | ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100); | |
3683 | } | |
2b4e57bd | 3684 | |
42c0526c BW |
3685 | sandybridge_pcode_write(dev_priv, |
3686 | GEN6_PCODE_WRITE_MIN_FREQ_TABLE, | |
3ebecd07 CW |
3687 | ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT | |
3688 | ring_freq << GEN6_PCODE_FREQ_RING_RATIO_SHIFT | | |
3689 | gpu_freq); | |
2b4e57bd | 3690 | } |
2b4e57bd ED |
3691 | } |
3692 | ||
0a073b84 JB |
3693 | int valleyview_rps_max_freq(struct drm_i915_private *dev_priv) |
3694 | { | |
3695 | u32 val, rp0; | |
3696 | ||
64936258 | 3697 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE); |
0a073b84 JB |
3698 | |
3699 | rp0 = (val & FB_GFX_MAX_FREQ_FUSE_MASK) >> FB_GFX_MAX_FREQ_FUSE_SHIFT; | |
3700 | /* Clamp to max */ | |
3701 | rp0 = min_t(u32, rp0, 0xea); | |
3702 | ||
3703 | return rp0; | |
3704 | } | |
3705 | ||
3706 | static int valleyview_rps_rpe_freq(struct drm_i915_private *dev_priv) | |
3707 | { | |
3708 | u32 val, rpe; | |
3709 | ||
64936258 | 3710 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_LO); |
0a073b84 | 3711 | rpe = (val & FB_FMAX_VMIN_FREQ_LO_MASK) >> FB_FMAX_VMIN_FREQ_LO_SHIFT; |
64936258 | 3712 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_HI); |
0a073b84 JB |
3713 | rpe |= (val & FB_FMAX_VMIN_FREQ_HI_MASK) << 5; |
3714 | ||
3715 | return rpe; | |
3716 | } | |
3717 | ||
3718 | int valleyview_rps_min_freq(struct drm_i915_private *dev_priv) | |
3719 | { | |
64936258 | 3720 | return vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM) & 0xff; |
0a073b84 JB |
3721 | } |
3722 | ||
52ceb908 JB |
3723 | static void vlv_rps_timer_work(struct work_struct *work) |
3724 | { | |
3725 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
3726 | rps.vlv_work.work); | |
3727 | ||
3728 | /* | |
3729 | * Timer fired, we must be idle. Drop to min voltage state. | |
3730 | * Note: we use RPe here since it should match the | |
3731 | * Vmin we were shooting for. That should give us better | |
3732 | * perf when we come back out of RC6 than if we used the | |
3733 | * min freq available. | |
3734 | */ | |
3735 | mutex_lock(&dev_priv->rps.hw_lock); | |
6dc58488 VS |
3736 | if (dev_priv->rps.cur_delay > dev_priv->rps.rpe_delay) |
3737 | valleyview_set_rps(dev_priv->dev, dev_priv->rps.rpe_delay); | |
52ceb908 JB |
3738 | mutex_unlock(&dev_priv->rps.hw_lock); |
3739 | } | |
3740 | ||
c9cddffc JB |
3741 | static void valleyview_setup_pctx(struct drm_device *dev) |
3742 | { | |
3743 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3744 | struct drm_i915_gem_object *pctx; | |
3745 | unsigned long pctx_paddr; | |
3746 | u32 pcbr; | |
3747 | int pctx_size = 24*1024; | |
3748 | ||
3749 | pcbr = I915_READ(VLV_PCBR); | |
3750 | if (pcbr) { | |
3751 | /* BIOS set it up already, grab the pre-alloc'd space */ | |
3752 | int pcbr_offset; | |
3753 | ||
3754 | pcbr_offset = (pcbr & (~4095)) - dev_priv->mm.stolen_base; | |
3755 | pctx = i915_gem_object_create_stolen_for_preallocated(dev_priv->dev, | |
3756 | pcbr_offset, | |
190d6cd5 | 3757 | I915_GTT_OFFSET_NONE, |
c9cddffc JB |
3758 | pctx_size); |
3759 | goto out; | |
3760 | } | |
3761 | ||
3762 | /* | |
3763 | * From the Gunit register HAS: | |
3764 | * The Gfx driver is expected to program this register and ensure | |
3765 | * proper allocation within Gfx stolen memory. For example, this | |
3766 | * register should be programmed such than the PCBR range does not | |
3767 | * overlap with other ranges, such as the frame buffer, protected | |
3768 | * memory, or any other relevant ranges. | |
3769 | */ | |
3770 | pctx = i915_gem_object_create_stolen(dev, pctx_size); | |
3771 | if (!pctx) { | |
3772 | DRM_DEBUG("not enough stolen space for PCTX, disabling\n"); | |
3773 | return; | |
3774 | } | |
3775 | ||
3776 | pctx_paddr = dev_priv->mm.stolen_base + pctx->stolen->start; | |
3777 | I915_WRITE(VLV_PCBR, pctx_paddr); | |
3778 | ||
3779 | out: | |
3780 | dev_priv->vlv_pctx = pctx; | |
3781 | } | |
3782 | ||
0a073b84 JB |
3783 | static void valleyview_enable_rps(struct drm_device *dev) |
3784 | { | |
3785 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3786 | struct intel_ring_buffer *ring; | |
73008b98 | 3787 | u32 gtfifodbg, val; |
0a073b84 JB |
3788 | int i; |
3789 | ||
3790 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
3791 | ||
3792 | if ((gtfifodbg = I915_READ(GTFIFODBG))) { | |
3793 | DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg); | |
3794 | I915_WRITE(GTFIFODBG, gtfifodbg); | |
3795 | } | |
3796 | ||
c9cddffc JB |
3797 | valleyview_setup_pctx(dev); |
3798 | ||
0a073b84 JB |
3799 | gen6_gt_force_wake_get(dev_priv); |
3800 | ||
3801 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); | |
3802 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); | |
3803 | I915_WRITE(GEN6_RP_UP_EI, 66000); | |
3804 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); | |
3805 | ||
3806 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
3807 | ||
3808 | I915_WRITE(GEN6_RP_CONTROL, | |
3809 | GEN6_RP_MEDIA_TURBO | | |
3810 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
3811 | GEN6_RP_MEDIA_IS_GFX | | |
3812 | GEN6_RP_ENABLE | | |
3813 | GEN6_RP_UP_BUSY_AVG | | |
3814 | GEN6_RP_DOWN_IDLE_CONT); | |
3815 | ||
3816 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 0x00280000); | |
3817 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
3818 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
3819 | ||
3820 | for_each_ring(ring, dev_priv, i) | |
3821 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
3822 | ||
3823 | I915_WRITE(GEN6_RC6_THRESHOLD, 0xc350); | |
3824 | ||
3825 | /* allows RC6 residency counter to work */ | |
3826 | I915_WRITE(0x138104, _MASKED_BIT_ENABLE(0x3)); | |
3827 | I915_WRITE(GEN6_RC_CONTROL, | |
3828 | GEN7_RC_CTL_TO_MODE); | |
3829 | ||
64936258 | 3830 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
2445966e JB |
3831 | switch ((val >> 6) & 3) { |
3832 | case 0: | |
3833 | case 1: | |
3834 | dev_priv->mem_freq = 800; | |
3835 | break; | |
3836 | case 2: | |
3837 | dev_priv->mem_freq = 1066; | |
3838 | break; | |
3839 | case 3: | |
3840 | dev_priv->mem_freq = 1333; | |
3841 | break; | |
3842 | } | |
0a073b84 JB |
3843 | DRM_DEBUG_DRIVER("DDR speed: %d MHz", dev_priv->mem_freq); |
3844 | ||
3845 | DRM_DEBUG_DRIVER("GPLL enabled? %s\n", val & 0x10 ? "yes" : "no"); | |
3846 | DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val); | |
3847 | ||
0a073b84 | 3848 | dev_priv->rps.cur_delay = (val >> 8) & 0xff; |
73008b98 VS |
3849 | DRM_DEBUG_DRIVER("current GPU freq: %d MHz (%u)\n", |
3850 | vlv_gpu_freq(dev_priv->mem_freq, | |
3851 | dev_priv->rps.cur_delay), | |
3852 | dev_priv->rps.cur_delay); | |
0a073b84 JB |
3853 | |
3854 | dev_priv->rps.max_delay = valleyview_rps_max_freq(dev_priv); | |
3855 | dev_priv->rps.hw_max = dev_priv->rps.max_delay; | |
73008b98 VS |
3856 | DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", |
3857 | vlv_gpu_freq(dev_priv->mem_freq, | |
3858 | dev_priv->rps.max_delay), | |
3859 | dev_priv->rps.max_delay); | |
0a073b84 | 3860 | |
73008b98 VS |
3861 | dev_priv->rps.rpe_delay = valleyview_rps_rpe_freq(dev_priv); |
3862 | DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", | |
3863 | vlv_gpu_freq(dev_priv->mem_freq, | |
3864 | dev_priv->rps.rpe_delay), | |
3865 | dev_priv->rps.rpe_delay); | |
0a073b84 | 3866 | |
73008b98 VS |
3867 | dev_priv->rps.min_delay = valleyview_rps_min_freq(dev_priv); |
3868 | DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", | |
3869 | vlv_gpu_freq(dev_priv->mem_freq, | |
3870 | dev_priv->rps.min_delay), | |
3871 | dev_priv->rps.min_delay); | |
0a073b84 | 3872 | |
73008b98 VS |
3873 | DRM_DEBUG_DRIVER("setting GPU freq to %d MHz (%u)\n", |
3874 | vlv_gpu_freq(dev_priv->mem_freq, | |
3875 | dev_priv->rps.rpe_delay), | |
3876 | dev_priv->rps.rpe_delay); | |
0a073b84 | 3877 | |
52ceb908 JB |
3878 | INIT_DELAYED_WORK(&dev_priv->rps.vlv_work, vlv_rps_timer_work); |
3879 | ||
73008b98 | 3880 | valleyview_set_rps(dev_priv->dev, dev_priv->rps.rpe_delay); |
0a073b84 | 3881 | |
44fc7d5c | 3882 | gen6_enable_rps_interrupts(dev); |
0a073b84 JB |
3883 | |
3884 | gen6_gt_force_wake_put(dev_priv); | |
3885 | } | |
3886 | ||
930ebb46 | 3887 | void ironlake_teardown_rc6(struct drm_device *dev) |
2b4e57bd ED |
3888 | { |
3889 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3890 | ||
3e373948 DV |
3891 | if (dev_priv->ips.renderctx) { |
3892 | i915_gem_object_unpin(dev_priv->ips.renderctx); | |
3893 | drm_gem_object_unreference(&dev_priv->ips.renderctx->base); | |
3894 | dev_priv->ips.renderctx = NULL; | |
2b4e57bd ED |
3895 | } |
3896 | ||
3e373948 DV |
3897 | if (dev_priv->ips.pwrctx) { |
3898 | i915_gem_object_unpin(dev_priv->ips.pwrctx); | |
3899 | drm_gem_object_unreference(&dev_priv->ips.pwrctx->base); | |
3900 | dev_priv->ips.pwrctx = NULL; | |
2b4e57bd ED |
3901 | } |
3902 | } | |
3903 | ||
930ebb46 | 3904 | static void ironlake_disable_rc6(struct drm_device *dev) |
2b4e57bd ED |
3905 | { |
3906 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3907 | ||
3908 | if (I915_READ(PWRCTXA)) { | |
3909 | /* Wake the GPU, prevent RC6, then restore RSTDBYCTL */ | |
3910 | I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) | RCX_SW_EXIT); | |
3911 | wait_for(((I915_READ(RSTDBYCTL) & RSX_STATUS_MASK) == RSX_STATUS_ON), | |
3912 | 50); | |
3913 | ||
3914 | I915_WRITE(PWRCTXA, 0); | |
3915 | POSTING_READ(PWRCTXA); | |
3916 | ||
3917 | I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT); | |
3918 | POSTING_READ(RSTDBYCTL); | |
3919 | } | |
2b4e57bd ED |
3920 | } |
3921 | ||
3922 | static int ironlake_setup_rc6(struct drm_device *dev) | |
3923 | { | |
3924 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3925 | ||
3e373948 DV |
3926 | if (dev_priv->ips.renderctx == NULL) |
3927 | dev_priv->ips.renderctx = intel_alloc_context_page(dev); | |
3928 | if (!dev_priv->ips.renderctx) | |
2b4e57bd ED |
3929 | return -ENOMEM; |
3930 | ||
3e373948 DV |
3931 | if (dev_priv->ips.pwrctx == NULL) |
3932 | dev_priv->ips.pwrctx = intel_alloc_context_page(dev); | |
3933 | if (!dev_priv->ips.pwrctx) { | |
2b4e57bd ED |
3934 | ironlake_teardown_rc6(dev); |
3935 | return -ENOMEM; | |
3936 | } | |
3937 | ||
3938 | return 0; | |
3939 | } | |
3940 | ||
930ebb46 | 3941 | static void ironlake_enable_rc6(struct drm_device *dev) |
2b4e57bd ED |
3942 | { |
3943 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d90c952 | 3944 | struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; |
3e960501 | 3945 | bool was_interruptible; |
2b4e57bd ED |
3946 | int ret; |
3947 | ||
3948 | /* rc6 disabled by default due to repeated reports of hanging during | |
3949 | * boot and resume. | |
3950 | */ | |
3951 | if (!intel_enable_rc6(dev)) | |
3952 | return; | |
3953 | ||
79f5b2c7 DV |
3954 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); |
3955 | ||
2b4e57bd | 3956 | ret = ironlake_setup_rc6(dev); |
79f5b2c7 | 3957 | if (ret) |
2b4e57bd | 3958 | return; |
2b4e57bd | 3959 | |
3e960501 CW |
3960 | was_interruptible = dev_priv->mm.interruptible; |
3961 | dev_priv->mm.interruptible = false; | |
3962 | ||
2b4e57bd ED |
3963 | /* |
3964 | * GPU can automatically power down the render unit if given a page | |
3965 | * to save state. | |
3966 | */ | |
6d90c952 | 3967 | ret = intel_ring_begin(ring, 6); |
2b4e57bd ED |
3968 | if (ret) { |
3969 | ironlake_teardown_rc6(dev); | |
3e960501 | 3970 | dev_priv->mm.interruptible = was_interruptible; |
2b4e57bd ED |
3971 | return; |
3972 | } | |
3973 | ||
6d90c952 DV |
3974 | intel_ring_emit(ring, MI_SUSPEND_FLUSH | MI_SUSPEND_FLUSH_EN); |
3975 | intel_ring_emit(ring, MI_SET_CONTEXT); | |
f343c5f6 | 3976 | intel_ring_emit(ring, i915_gem_obj_ggtt_offset(dev_priv->ips.renderctx) | |
6d90c952 DV |
3977 | MI_MM_SPACE_GTT | |
3978 | MI_SAVE_EXT_STATE_EN | | |
3979 | MI_RESTORE_EXT_STATE_EN | | |
3980 | MI_RESTORE_INHIBIT); | |
3981 | intel_ring_emit(ring, MI_SUSPEND_FLUSH); | |
3982 | intel_ring_emit(ring, MI_NOOP); | |
3983 | intel_ring_emit(ring, MI_FLUSH); | |
3984 | intel_ring_advance(ring); | |
2b4e57bd ED |
3985 | |
3986 | /* | |
3987 | * Wait for the command parser to advance past MI_SET_CONTEXT. The HW | |
3988 | * does an implicit flush, combined with MI_FLUSH above, it should be | |
3989 | * safe to assume that renderctx is valid | |
3990 | */ | |
3e960501 CW |
3991 | ret = intel_ring_idle(ring); |
3992 | dev_priv->mm.interruptible = was_interruptible; | |
2b4e57bd | 3993 | if (ret) { |
def27a58 | 3994 | DRM_ERROR("failed to enable ironlake power savings\n"); |
2b4e57bd | 3995 | ironlake_teardown_rc6(dev); |
2b4e57bd ED |
3996 | return; |
3997 | } | |
3998 | ||
f343c5f6 | 3999 | I915_WRITE(PWRCTXA, i915_gem_obj_ggtt_offset(dev_priv->ips.pwrctx) | PWRCTX_EN); |
2b4e57bd | 4000 | I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT); |
2b4e57bd ED |
4001 | } |
4002 | ||
dde18883 ED |
4003 | static unsigned long intel_pxfreq(u32 vidfreq) |
4004 | { | |
4005 | unsigned long freq; | |
4006 | int div = (vidfreq & 0x3f0000) >> 16; | |
4007 | int post = (vidfreq & 0x3000) >> 12; | |
4008 | int pre = (vidfreq & 0x7); | |
4009 | ||
4010 | if (!pre) | |
4011 | return 0; | |
4012 | ||
4013 | freq = ((div * 133333) / ((1<<post) * pre)); | |
4014 | ||
4015 | return freq; | |
4016 | } | |
4017 | ||
eb48eb00 DV |
4018 | static const struct cparams { |
4019 | u16 i; | |
4020 | u16 t; | |
4021 | u16 m; | |
4022 | u16 c; | |
4023 | } cparams[] = { | |
4024 | { 1, 1333, 301, 28664 }, | |
4025 | { 1, 1066, 294, 24460 }, | |
4026 | { 1, 800, 294, 25192 }, | |
4027 | { 0, 1333, 276, 27605 }, | |
4028 | { 0, 1066, 276, 27605 }, | |
4029 | { 0, 800, 231, 23784 }, | |
4030 | }; | |
4031 | ||
f531dcb2 | 4032 | static unsigned long __i915_chipset_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
4033 | { |
4034 | u64 total_count, diff, ret; | |
4035 | u32 count1, count2, count3, m = 0, c = 0; | |
4036 | unsigned long now = jiffies_to_msecs(jiffies), diff1; | |
4037 | int i; | |
4038 | ||
02d71956 DV |
4039 | assert_spin_locked(&mchdev_lock); |
4040 | ||
20e4d407 | 4041 | diff1 = now - dev_priv->ips.last_time1; |
eb48eb00 DV |
4042 | |
4043 | /* Prevent division-by-zero if we are asking too fast. | |
4044 | * Also, we don't get interesting results if we are polling | |
4045 | * faster than once in 10ms, so just return the saved value | |
4046 | * in such cases. | |
4047 | */ | |
4048 | if (diff1 <= 10) | |
20e4d407 | 4049 | return dev_priv->ips.chipset_power; |
eb48eb00 DV |
4050 | |
4051 | count1 = I915_READ(DMIEC); | |
4052 | count2 = I915_READ(DDREC); | |
4053 | count3 = I915_READ(CSIEC); | |
4054 | ||
4055 | total_count = count1 + count2 + count3; | |
4056 | ||
4057 | /* FIXME: handle per-counter overflow */ | |
20e4d407 DV |
4058 | if (total_count < dev_priv->ips.last_count1) { |
4059 | diff = ~0UL - dev_priv->ips.last_count1; | |
eb48eb00 DV |
4060 | diff += total_count; |
4061 | } else { | |
20e4d407 | 4062 | diff = total_count - dev_priv->ips.last_count1; |
eb48eb00 DV |
4063 | } |
4064 | ||
4065 | for (i = 0; i < ARRAY_SIZE(cparams); i++) { | |
20e4d407 DV |
4066 | if (cparams[i].i == dev_priv->ips.c_m && |
4067 | cparams[i].t == dev_priv->ips.r_t) { | |
eb48eb00 DV |
4068 | m = cparams[i].m; |
4069 | c = cparams[i].c; | |
4070 | break; | |
4071 | } | |
4072 | } | |
4073 | ||
4074 | diff = div_u64(diff, diff1); | |
4075 | ret = ((m * diff) + c); | |
4076 | ret = div_u64(ret, 10); | |
4077 | ||
20e4d407 DV |
4078 | dev_priv->ips.last_count1 = total_count; |
4079 | dev_priv->ips.last_time1 = now; | |
eb48eb00 | 4080 | |
20e4d407 | 4081 | dev_priv->ips.chipset_power = ret; |
eb48eb00 DV |
4082 | |
4083 | return ret; | |
4084 | } | |
4085 | ||
f531dcb2 CW |
4086 | unsigned long i915_chipset_val(struct drm_i915_private *dev_priv) |
4087 | { | |
4088 | unsigned long val; | |
4089 | ||
4090 | if (dev_priv->info->gen != 5) | |
4091 | return 0; | |
4092 | ||
4093 | spin_lock_irq(&mchdev_lock); | |
4094 | ||
4095 | val = __i915_chipset_val(dev_priv); | |
4096 | ||
4097 | spin_unlock_irq(&mchdev_lock); | |
4098 | ||
4099 | return val; | |
4100 | } | |
4101 | ||
eb48eb00 DV |
4102 | unsigned long i915_mch_val(struct drm_i915_private *dev_priv) |
4103 | { | |
4104 | unsigned long m, x, b; | |
4105 | u32 tsfs; | |
4106 | ||
4107 | tsfs = I915_READ(TSFS); | |
4108 | ||
4109 | m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT); | |
4110 | x = I915_READ8(TR1); | |
4111 | ||
4112 | b = tsfs & TSFS_INTR_MASK; | |
4113 | ||
4114 | return ((m * x) / 127) - b; | |
4115 | } | |
4116 | ||
4117 | static u16 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid) | |
4118 | { | |
4119 | static const struct v_table { | |
4120 | u16 vd; /* in .1 mil */ | |
4121 | u16 vm; /* in .1 mil */ | |
4122 | } v_table[] = { | |
4123 | { 0, 0, }, | |
4124 | { 375, 0, }, | |
4125 | { 500, 0, }, | |
4126 | { 625, 0, }, | |
4127 | { 750, 0, }, | |
4128 | { 875, 0, }, | |
4129 | { 1000, 0, }, | |
4130 | { 1125, 0, }, | |
4131 | { 4125, 3000, }, | |
4132 | { 4125, 3000, }, | |
4133 | { 4125, 3000, }, | |
4134 | { 4125, 3000, }, | |
4135 | { 4125, 3000, }, | |
4136 | { 4125, 3000, }, | |
4137 | { 4125, 3000, }, | |
4138 | { 4125, 3000, }, | |
4139 | { 4125, 3000, }, | |
4140 | { 4125, 3000, }, | |
4141 | { 4125, 3000, }, | |
4142 | { 4125, 3000, }, | |
4143 | { 4125, 3000, }, | |
4144 | { 4125, 3000, }, | |
4145 | { 4125, 3000, }, | |
4146 | { 4125, 3000, }, | |
4147 | { 4125, 3000, }, | |
4148 | { 4125, 3000, }, | |
4149 | { 4125, 3000, }, | |
4150 | { 4125, 3000, }, | |
4151 | { 4125, 3000, }, | |
4152 | { 4125, 3000, }, | |
4153 | { 4125, 3000, }, | |
4154 | { 4125, 3000, }, | |
4155 | { 4250, 3125, }, | |
4156 | { 4375, 3250, }, | |
4157 | { 4500, 3375, }, | |
4158 | { 4625, 3500, }, | |
4159 | { 4750, 3625, }, | |
4160 | { 4875, 3750, }, | |
4161 | { 5000, 3875, }, | |
4162 | { 5125, 4000, }, | |
4163 | { 5250, 4125, }, | |
4164 | { 5375, 4250, }, | |
4165 | { 5500, 4375, }, | |
4166 | { 5625, 4500, }, | |
4167 | { 5750, 4625, }, | |
4168 | { 5875, 4750, }, | |
4169 | { 6000, 4875, }, | |
4170 | { 6125, 5000, }, | |
4171 | { 6250, 5125, }, | |
4172 | { 6375, 5250, }, | |
4173 | { 6500, 5375, }, | |
4174 | { 6625, 5500, }, | |
4175 | { 6750, 5625, }, | |
4176 | { 6875, 5750, }, | |
4177 | { 7000, 5875, }, | |
4178 | { 7125, 6000, }, | |
4179 | { 7250, 6125, }, | |
4180 | { 7375, 6250, }, | |
4181 | { 7500, 6375, }, | |
4182 | { 7625, 6500, }, | |
4183 | { 7750, 6625, }, | |
4184 | { 7875, 6750, }, | |
4185 | { 8000, 6875, }, | |
4186 | { 8125, 7000, }, | |
4187 | { 8250, 7125, }, | |
4188 | { 8375, 7250, }, | |
4189 | { 8500, 7375, }, | |
4190 | { 8625, 7500, }, | |
4191 | { 8750, 7625, }, | |
4192 | { 8875, 7750, }, | |
4193 | { 9000, 7875, }, | |
4194 | { 9125, 8000, }, | |
4195 | { 9250, 8125, }, | |
4196 | { 9375, 8250, }, | |
4197 | { 9500, 8375, }, | |
4198 | { 9625, 8500, }, | |
4199 | { 9750, 8625, }, | |
4200 | { 9875, 8750, }, | |
4201 | { 10000, 8875, }, | |
4202 | { 10125, 9000, }, | |
4203 | { 10250, 9125, }, | |
4204 | { 10375, 9250, }, | |
4205 | { 10500, 9375, }, | |
4206 | { 10625, 9500, }, | |
4207 | { 10750, 9625, }, | |
4208 | { 10875, 9750, }, | |
4209 | { 11000, 9875, }, | |
4210 | { 11125, 10000, }, | |
4211 | { 11250, 10125, }, | |
4212 | { 11375, 10250, }, | |
4213 | { 11500, 10375, }, | |
4214 | { 11625, 10500, }, | |
4215 | { 11750, 10625, }, | |
4216 | { 11875, 10750, }, | |
4217 | { 12000, 10875, }, | |
4218 | { 12125, 11000, }, | |
4219 | { 12250, 11125, }, | |
4220 | { 12375, 11250, }, | |
4221 | { 12500, 11375, }, | |
4222 | { 12625, 11500, }, | |
4223 | { 12750, 11625, }, | |
4224 | { 12875, 11750, }, | |
4225 | { 13000, 11875, }, | |
4226 | { 13125, 12000, }, | |
4227 | { 13250, 12125, }, | |
4228 | { 13375, 12250, }, | |
4229 | { 13500, 12375, }, | |
4230 | { 13625, 12500, }, | |
4231 | { 13750, 12625, }, | |
4232 | { 13875, 12750, }, | |
4233 | { 14000, 12875, }, | |
4234 | { 14125, 13000, }, | |
4235 | { 14250, 13125, }, | |
4236 | { 14375, 13250, }, | |
4237 | { 14500, 13375, }, | |
4238 | { 14625, 13500, }, | |
4239 | { 14750, 13625, }, | |
4240 | { 14875, 13750, }, | |
4241 | { 15000, 13875, }, | |
4242 | { 15125, 14000, }, | |
4243 | { 15250, 14125, }, | |
4244 | { 15375, 14250, }, | |
4245 | { 15500, 14375, }, | |
4246 | { 15625, 14500, }, | |
4247 | { 15750, 14625, }, | |
4248 | { 15875, 14750, }, | |
4249 | { 16000, 14875, }, | |
4250 | { 16125, 15000, }, | |
4251 | }; | |
4252 | if (dev_priv->info->is_mobile) | |
4253 | return v_table[pxvid].vm; | |
4254 | else | |
4255 | return v_table[pxvid].vd; | |
4256 | } | |
4257 | ||
02d71956 | 4258 | static void __i915_update_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
4259 | { |
4260 | struct timespec now, diff1; | |
4261 | u64 diff; | |
4262 | unsigned long diffms; | |
4263 | u32 count; | |
4264 | ||
02d71956 | 4265 | assert_spin_locked(&mchdev_lock); |
eb48eb00 DV |
4266 | |
4267 | getrawmonotonic(&now); | |
20e4d407 | 4268 | diff1 = timespec_sub(now, dev_priv->ips.last_time2); |
eb48eb00 DV |
4269 | |
4270 | /* Don't divide by 0 */ | |
4271 | diffms = diff1.tv_sec * 1000 + diff1.tv_nsec / 1000000; | |
4272 | if (!diffms) | |
4273 | return; | |
4274 | ||
4275 | count = I915_READ(GFXEC); | |
4276 | ||
20e4d407 DV |
4277 | if (count < dev_priv->ips.last_count2) { |
4278 | diff = ~0UL - dev_priv->ips.last_count2; | |
eb48eb00 DV |
4279 | diff += count; |
4280 | } else { | |
20e4d407 | 4281 | diff = count - dev_priv->ips.last_count2; |
eb48eb00 DV |
4282 | } |
4283 | ||
20e4d407 DV |
4284 | dev_priv->ips.last_count2 = count; |
4285 | dev_priv->ips.last_time2 = now; | |
eb48eb00 DV |
4286 | |
4287 | /* More magic constants... */ | |
4288 | diff = diff * 1181; | |
4289 | diff = div_u64(diff, diffms * 10); | |
20e4d407 | 4290 | dev_priv->ips.gfx_power = diff; |
eb48eb00 DV |
4291 | } |
4292 | ||
02d71956 DV |
4293 | void i915_update_gfx_val(struct drm_i915_private *dev_priv) |
4294 | { | |
4295 | if (dev_priv->info->gen != 5) | |
4296 | return; | |
4297 | ||
9270388e | 4298 | spin_lock_irq(&mchdev_lock); |
02d71956 DV |
4299 | |
4300 | __i915_update_gfx_val(dev_priv); | |
4301 | ||
9270388e | 4302 | spin_unlock_irq(&mchdev_lock); |
02d71956 DV |
4303 | } |
4304 | ||
f531dcb2 | 4305 | static unsigned long __i915_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
4306 | { |
4307 | unsigned long t, corr, state1, corr2, state2; | |
4308 | u32 pxvid, ext_v; | |
4309 | ||
02d71956 DV |
4310 | assert_spin_locked(&mchdev_lock); |
4311 | ||
c6a828d3 | 4312 | pxvid = I915_READ(PXVFREQ_BASE + (dev_priv->rps.cur_delay * 4)); |
eb48eb00 DV |
4313 | pxvid = (pxvid >> 24) & 0x7f; |
4314 | ext_v = pvid_to_extvid(dev_priv, pxvid); | |
4315 | ||
4316 | state1 = ext_v; | |
4317 | ||
4318 | t = i915_mch_val(dev_priv); | |
4319 | ||
4320 | /* Revel in the empirically derived constants */ | |
4321 | ||
4322 | /* Correction factor in 1/100000 units */ | |
4323 | if (t > 80) | |
4324 | corr = ((t * 2349) + 135940); | |
4325 | else if (t >= 50) | |
4326 | corr = ((t * 964) + 29317); | |
4327 | else /* < 50 */ | |
4328 | corr = ((t * 301) + 1004); | |
4329 | ||
4330 | corr = corr * ((150142 * state1) / 10000 - 78642); | |
4331 | corr /= 100000; | |
20e4d407 | 4332 | corr2 = (corr * dev_priv->ips.corr); |
eb48eb00 DV |
4333 | |
4334 | state2 = (corr2 * state1) / 10000; | |
4335 | state2 /= 100; /* convert to mW */ | |
4336 | ||
02d71956 | 4337 | __i915_update_gfx_val(dev_priv); |
eb48eb00 | 4338 | |
20e4d407 | 4339 | return dev_priv->ips.gfx_power + state2; |
eb48eb00 DV |
4340 | } |
4341 | ||
f531dcb2 CW |
4342 | unsigned long i915_gfx_val(struct drm_i915_private *dev_priv) |
4343 | { | |
4344 | unsigned long val; | |
4345 | ||
4346 | if (dev_priv->info->gen != 5) | |
4347 | return 0; | |
4348 | ||
4349 | spin_lock_irq(&mchdev_lock); | |
4350 | ||
4351 | val = __i915_gfx_val(dev_priv); | |
4352 | ||
4353 | spin_unlock_irq(&mchdev_lock); | |
4354 | ||
4355 | return val; | |
4356 | } | |
4357 | ||
eb48eb00 DV |
4358 | /** |
4359 | * i915_read_mch_val - return value for IPS use | |
4360 | * | |
4361 | * Calculate and return a value for the IPS driver to use when deciding whether | |
4362 | * we have thermal and power headroom to increase CPU or GPU power budget. | |
4363 | */ | |
4364 | unsigned long i915_read_mch_val(void) | |
4365 | { | |
4366 | struct drm_i915_private *dev_priv; | |
4367 | unsigned long chipset_val, graphics_val, ret = 0; | |
4368 | ||
9270388e | 4369 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
4370 | if (!i915_mch_dev) |
4371 | goto out_unlock; | |
4372 | dev_priv = i915_mch_dev; | |
4373 | ||
f531dcb2 CW |
4374 | chipset_val = __i915_chipset_val(dev_priv); |
4375 | graphics_val = __i915_gfx_val(dev_priv); | |
eb48eb00 DV |
4376 | |
4377 | ret = chipset_val + graphics_val; | |
4378 | ||
4379 | out_unlock: | |
9270388e | 4380 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4381 | |
4382 | return ret; | |
4383 | } | |
4384 | EXPORT_SYMBOL_GPL(i915_read_mch_val); | |
4385 | ||
4386 | /** | |
4387 | * i915_gpu_raise - raise GPU frequency limit | |
4388 | * | |
4389 | * Raise the limit; IPS indicates we have thermal headroom. | |
4390 | */ | |
4391 | bool i915_gpu_raise(void) | |
4392 | { | |
4393 | struct drm_i915_private *dev_priv; | |
4394 | bool ret = true; | |
4395 | ||
9270388e | 4396 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
4397 | if (!i915_mch_dev) { |
4398 | ret = false; | |
4399 | goto out_unlock; | |
4400 | } | |
4401 | dev_priv = i915_mch_dev; | |
4402 | ||
20e4d407 DV |
4403 | if (dev_priv->ips.max_delay > dev_priv->ips.fmax) |
4404 | dev_priv->ips.max_delay--; | |
eb48eb00 DV |
4405 | |
4406 | out_unlock: | |
9270388e | 4407 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4408 | |
4409 | return ret; | |
4410 | } | |
4411 | EXPORT_SYMBOL_GPL(i915_gpu_raise); | |
4412 | ||
4413 | /** | |
4414 | * i915_gpu_lower - lower GPU frequency limit | |
4415 | * | |
4416 | * IPS indicates we're close to a thermal limit, so throttle back the GPU | |
4417 | * frequency maximum. | |
4418 | */ | |
4419 | bool i915_gpu_lower(void) | |
4420 | { | |
4421 | struct drm_i915_private *dev_priv; | |
4422 | bool ret = true; | |
4423 | ||
9270388e | 4424 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
4425 | if (!i915_mch_dev) { |
4426 | ret = false; | |
4427 | goto out_unlock; | |
4428 | } | |
4429 | dev_priv = i915_mch_dev; | |
4430 | ||
20e4d407 DV |
4431 | if (dev_priv->ips.max_delay < dev_priv->ips.min_delay) |
4432 | dev_priv->ips.max_delay++; | |
eb48eb00 DV |
4433 | |
4434 | out_unlock: | |
9270388e | 4435 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4436 | |
4437 | return ret; | |
4438 | } | |
4439 | EXPORT_SYMBOL_GPL(i915_gpu_lower); | |
4440 | ||
4441 | /** | |
4442 | * i915_gpu_busy - indicate GPU business to IPS | |
4443 | * | |
4444 | * Tell the IPS driver whether or not the GPU is busy. | |
4445 | */ | |
4446 | bool i915_gpu_busy(void) | |
4447 | { | |
4448 | struct drm_i915_private *dev_priv; | |
f047e395 | 4449 | struct intel_ring_buffer *ring; |
eb48eb00 | 4450 | bool ret = false; |
f047e395 | 4451 | int i; |
eb48eb00 | 4452 | |
9270388e | 4453 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
4454 | if (!i915_mch_dev) |
4455 | goto out_unlock; | |
4456 | dev_priv = i915_mch_dev; | |
4457 | ||
f047e395 CW |
4458 | for_each_ring(ring, dev_priv, i) |
4459 | ret |= !list_empty(&ring->request_list); | |
eb48eb00 DV |
4460 | |
4461 | out_unlock: | |
9270388e | 4462 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4463 | |
4464 | return ret; | |
4465 | } | |
4466 | EXPORT_SYMBOL_GPL(i915_gpu_busy); | |
4467 | ||
4468 | /** | |
4469 | * i915_gpu_turbo_disable - disable graphics turbo | |
4470 | * | |
4471 | * Disable graphics turbo by resetting the max frequency and setting the | |
4472 | * current frequency to the default. | |
4473 | */ | |
4474 | bool i915_gpu_turbo_disable(void) | |
4475 | { | |
4476 | struct drm_i915_private *dev_priv; | |
4477 | bool ret = true; | |
4478 | ||
9270388e | 4479 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
4480 | if (!i915_mch_dev) { |
4481 | ret = false; | |
4482 | goto out_unlock; | |
4483 | } | |
4484 | dev_priv = i915_mch_dev; | |
4485 | ||
20e4d407 | 4486 | dev_priv->ips.max_delay = dev_priv->ips.fstart; |
eb48eb00 | 4487 | |
20e4d407 | 4488 | if (!ironlake_set_drps(dev_priv->dev, dev_priv->ips.fstart)) |
eb48eb00 DV |
4489 | ret = false; |
4490 | ||
4491 | out_unlock: | |
9270388e | 4492 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4493 | |
4494 | return ret; | |
4495 | } | |
4496 | EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable); | |
4497 | ||
4498 | /** | |
4499 | * Tells the intel_ips driver that the i915 driver is now loaded, if | |
4500 | * IPS got loaded first. | |
4501 | * | |
4502 | * This awkward dance is so that neither module has to depend on the | |
4503 | * other in order for IPS to do the appropriate communication of | |
4504 | * GPU turbo limits to i915. | |
4505 | */ | |
4506 | static void | |
4507 | ips_ping_for_i915_load(void) | |
4508 | { | |
4509 | void (*link)(void); | |
4510 | ||
4511 | link = symbol_get(ips_link_to_i915_driver); | |
4512 | if (link) { | |
4513 | link(); | |
4514 | symbol_put(ips_link_to_i915_driver); | |
4515 | } | |
4516 | } | |
4517 | ||
4518 | void intel_gpu_ips_init(struct drm_i915_private *dev_priv) | |
4519 | { | |
02d71956 DV |
4520 | /* We only register the i915 ips part with intel-ips once everything is |
4521 | * set up, to avoid intel-ips sneaking in and reading bogus values. */ | |
9270388e | 4522 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 4523 | i915_mch_dev = dev_priv; |
9270388e | 4524 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4525 | |
4526 | ips_ping_for_i915_load(); | |
4527 | } | |
4528 | ||
4529 | void intel_gpu_ips_teardown(void) | |
4530 | { | |
9270388e | 4531 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 4532 | i915_mch_dev = NULL; |
9270388e | 4533 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 | 4534 | } |
8090c6b9 | 4535 | static void intel_init_emon(struct drm_device *dev) |
dde18883 ED |
4536 | { |
4537 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4538 | u32 lcfuse; | |
4539 | u8 pxw[16]; | |
4540 | int i; | |
4541 | ||
4542 | /* Disable to program */ | |
4543 | I915_WRITE(ECR, 0); | |
4544 | POSTING_READ(ECR); | |
4545 | ||
4546 | /* Program energy weights for various events */ | |
4547 | I915_WRITE(SDEW, 0x15040d00); | |
4548 | I915_WRITE(CSIEW0, 0x007f0000); | |
4549 | I915_WRITE(CSIEW1, 0x1e220004); | |
4550 | I915_WRITE(CSIEW2, 0x04000004); | |
4551 | ||
4552 | for (i = 0; i < 5; i++) | |
4553 | I915_WRITE(PEW + (i * 4), 0); | |
4554 | for (i = 0; i < 3; i++) | |
4555 | I915_WRITE(DEW + (i * 4), 0); | |
4556 | ||
4557 | /* Program P-state weights to account for frequency power adjustment */ | |
4558 | for (i = 0; i < 16; i++) { | |
4559 | u32 pxvidfreq = I915_READ(PXVFREQ_BASE + (i * 4)); | |
4560 | unsigned long freq = intel_pxfreq(pxvidfreq); | |
4561 | unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >> | |
4562 | PXVFREQ_PX_SHIFT; | |
4563 | unsigned long val; | |
4564 | ||
4565 | val = vid * vid; | |
4566 | val *= (freq / 1000); | |
4567 | val *= 255; | |
4568 | val /= (127*127*900); | |
4569 | if (val > 0xff) | |
4570 | DRM_ERROR("bad pxval: %ld\n", val); | |
4571 | pxw[i] = val; | |
4572 | } | |
4573 | /* Render standby states get 0 weight */ | |
4574 | pxw[14] = 0; | |
4575 | pxw[15] = 0; | |
4576 | ||
4577 | for (i = 0; i < 4; i++) { | |
4578 | u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) | | |
4579 | (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]); | |
4580 | I915_WRITE(PXW + (i * 4), val); | |
4581 | } | |
4582 | ||
4583 | /* Adjust magic regs to magic values (more experimental results) */ | |
4584 | I915_WRITE(OGW0, 0); | |
4585 | I915_WRITE(OGW1, 0); | |
4586 | I915_WRITE(EG0, 0x00007f00); | |
4587 | I915_WRITE(EG1, 0x0000000e); | |
4588 | I915_WRITE(EG2, 0x000e0000); | |
4589 | I915_WRITE(EG3, 0x68000300); | |
4590 | I915_WRITE(EG4, 0x42000000); | |
4591 | I915_WRITE(EG5, 0x00140031); | |
4592 | I915_WRITE(EG6, 0); | |
4593 | I915_WRITE(EG7, 0); | |
4594 | ||
4595 | for (i = 0; i < 8; i++) | |
4596 | I915_WRITE(PXWL + (i * 4), 0); | |
4597 | ||
4598 | /* Enable PMON + select events */ | |
4599 | I915_WRITE(ECR, 0x80000019); | |
4600 | ||
4601 | lcfuse = I915_READ(LCFUSE02); | |
4602 | ||
20e4d407 | 4603 | dev_priv->ips.corr = (lcfuse & LCFUSE_HIV_MASK); |
dde18883 ED |
4604 | } |
4605 | ||
8090c6b9 DV |
4606 | void intel_disable_gt_powersave(struct drm_device *dev) |
4607 | { | |
1a01ab3b JB |
4608 | struct drm_i915_private *dev_priv = dev->dev_private; |
4609 | ||
fd0c0642 DV |
4610 | /* Interrupts should be disabled already to avoid re-arming. */ |
4611 | WARN_ON(dev->irq_enabled); | |
4612 | ||
930ebb46 | 4613 | if (IS_IRONLAKE_M(dev)) { |
8090c6b9 | 4614 | ironlake_disable_drps(dev); |
930ebb46 | 4615 | ironlake_disable_rc6(dev); |
0a073b84 | 4616 | } else if (INTEL_INFO(dev)->gen >= 6) { |
1a01ab3b | 4617 | cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work); |
250848ca | 4618 | cancel_work_sync(&dev_priv->rps.work); |
52ceb908 JB |
4619 | if (IS_VALLEYVIEW(dev)) |
4620 | cancel_delayed_work_sync(&dev_priv->rps.vlv_work); | |
4fc688ce | 4621 | mutex_lock(&dev_priv->rps.hw_lock); |
d20d4f0c JB |
4622 | if (IS_VALLEYVIEW(dev)) |
4623 | valleyview_disable_rps(dev); | |
4624 | else | |
4625 | gen6_disable_rps(dev); | |
4fc688ce | 4626 | mutex_unlock(&dev_priv->rps.hw_lock); |
930ebb46 | 4627 | } |
8090c6b9 DV |
4628 | } |
4629 | ||
1a01ab3b JB |
4630 | static void intel_gen6_powersave_work(struct work_struct *work) |
4631 | { | |
4632 | struct drm_i915_private *dev_priv = | |
4633 | container_of(work, struct drm_i915_private, | |
4634 | rps.delayed_resume_work.work); | |
4635 | struct drm_device *dev = dev_priv->dev; | |
4636 | ||
4fc688ce | 4637 | mutex_lock(&dev_priv->rps.hw_lock); |
0a073b84 JB |
4638 | |
4639 | if (IS_VALLEYVIEW(dev)) { | |
4640 | valleyview_enable_rps(dev); | |
4641 | } else { | |
4642 | gen6_enable_rps(dev); | |
4643 | gen6_update_ring_freq(dev); | |
4644 | } | |
4fc688ce | 4645 | mutex_unlock(&dev_priv->rps.hw_lock); |
1a01ab3b JB |
4646 | } |
4647 | ||
8090c6b9 DV |
4648 | void intel_enable_gt_powersave(struct drm_device *dev) |
4649 | { | |
1a01ab3b JB |
4650 | struct drm_i915_private *dev_priv = dev->dev_private; |
4651 | ||
8090c6b9 DV |
4652 | if (IS_IRONLAKE_M(dev)) { |
4653 | ironlake_enable_drps(dev); | |
4654 | ironlake_enable_rc6(dev); | |
4655 | intel_init_emon(dev); | |
0a073b84 | 4656 | } else if (IS_GEN6(dev) || IS_GEN7(dev)) { |
1a01ab3b JB |
4657 | /* |
4658 | * PCU communication is slow and this doesn't need to be | |
4659 | * done at any specific time, so do this out of our fast path | |
4660 | * to make resume and init faster. | |
4661 | */ | |
4662 | schedule_delayed_work(&dev_priv->rps.delayed_resume_work, | |
4663 | round_jiffies_up_relative(HZ)); | |
8090c6b9 DV |
4664 | } |
4665 | } | |
4666 | ||
3107bd48 DV |
4667 | static void ibx_init_clock_gating(struct drm_device *dev) |
4668 | { | |
4669 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4670 | ||
4671 | /* | |
4672 | * On Ibex Peak and Cougar Point, we need to disable clock | |
4673 | * gating for the panel power sequencer or it will fail to | |
4674 | * start up when no ports are active. | |
4675 | */ | |
4676 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); | |
4677 | } | |
4678 | ||
0e088b8f VS |
4679 | static void g4x_disable_trickle_feed(struct drm_device *dev) |
4680 | { | |
4681 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4682 | int pipe; | |
4683 | ||
4684 | for_each_pipe(pipe) { | |
4685 | I915_WRITE(DSPCNTR(pipe), | |
4686 | I915_READ(DSPCNTR(pipe)) | | |
4687 | DISPPLANE_TRICKLE_FEED_DISABLE); | |
4688 | intel_flush_display_plane(dev_priv, pipe); | |
4689 | } | |
4690 | } | |
4691 | ||
1fa61106 | 4692 | static void ironlake_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
4693 | { |
4694 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231e54f6 | 4695 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 4696 | |
f1e8fa56 DL |
4697 | /* |
4698 | * Required for FBC | |
4699 | * WaFbcDisableDpfcClockGating:ilk | |
4700 | */ | |
4d47e4f5 DL |
4701 | dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE | |
4702 | ILK_DPFCUNIT_CLOCK_GATE_DISABLE | | |
4703 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE; | |
6f1d69b0 ED |
4704 | |
4705 | I915_WRITE(PCH_3DCGDIS0, | |
4706 | MARIUNIT_CLOCK_GATE_DISABLE | | |
4707 | SVSMUNIT_CLOCK_GATE_DISABLE); | |
4708 | I915_WRITE(PCH_3DCGDIS1, | |
4709 | VFMUNIT_CLOCK_GATE_DISABLE); | |
4710 | ||
6f1d69b0 ED |
4711 | /* |
4712 | * According to the spec the following bits should be set in | |
4713 | * order to enable memory self-refresh | |
4714 | * The bit 22/21 of 0x42004 | |
4715 | * The bit 5 of 0x42020 | |
4716 | * The bit 15 of 0x45000 | |
4717 | */ | |
4718 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
4719 | (I915_READ(ILK_DISPLAY_CHICKEN2) | | |
4720 | ILK_DPARB_GATE | ILK_VSDPFD_FULL)); | |
4d47e4f5 | 4721 | dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE; |
6f1d69b0 ED |
4722 | I915_WRITE(DISP_ARB_CTL, |
4723 | (I915_READ(DISP_ARB_CTL) | | |
4724 | DISP_FBC_WM_DIS)); | |
4725 | I915_WRITE(WM3_LP_ILK, 0); | |
4726 | I915_WRITE(WM2_LP_ILK, 0); | |
4727 | I915_WRITE(WM1_LP_ILK, 0); | |
4728 | ||
4729 | /* | |
4730 | * Based on the document from hardware guys the following bits | |
4731 | * should be set unconditionally in order to enable FBC. | |
4732 | * The bit 22 of 0x42000 | |
4733 | * The bit 22 of 0x42004 | |
4734 | * The bit 7,8,9 of 0x42020. | |
4735 | */ | |
4736 | if (IS_IRONLAKE_M(dev)) { | |
4bb35334 | 4737 | /* WaFbcAsynchFlipDisableFbcQueue:ilk */ |
6f1d69b0 ED |
4738 | I915_WRITE(ILK_DISPLAY_CHICKEN1, |
4739 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
4740 | ILK_FBCQ_DIS); | |
4741 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
4742 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
4743 | ILK_DPARB_GATE); | |
6f1d69b0 ED |
4744 | } |
4745 | ||
4d47e4f5 DL |
4746 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
4747 | ||
6f1d69b0 ED |
4748 | I915_WRITE(ILK_DISPLAY_CHICKEN2, |
4749 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
4750 | ILK_ELPIN_409_SELECT); | |
4751 | I915_WRITE(_3D_CHICKEN2, | |
4752 | _3D_CHICKEN2_WM_READ_PIPELINED << 16 | | |
4753 | _3D_CHICKEN2_WM_READ_PIPELINED); | |
4358a374 | 4754 | |
ecdb4eb7 | 4755 | /* WaDisableRenderCachePipelinedFlush:ilk */ |
4358a374 DV |
4756 | I915_WRITE(CACHE_MODE_0, |
4757 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
3107bd48 | 4758 | |
0e088b8f | 4759 | g4x_disable_trickle_feed(dev); |
bdad2b2f | 4760 | |
3107bd48 DV |
4761 | ibx_init_clock_gating(dev); |
4762 | } | |
4763 | ||
4764 | static void cpt_init_clock_gating(struct drm_device *dev) | |
4765 | { | |
4766 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4767 | int pipe; | |
3f704fa2 | 4768 | uint32_t val; |
3107bd48 DV |
4769 | |
4770 | /* | |
4771 | * On Ibex Peak and Cougar Point, we need to disable clock | |
4772 | * gating for the panel power sequencer or it will fail to | |
4773 | * start up when no ports are active. | |
4774 | */ | |
4775 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); | |
4776 | I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) | | |
4777 | DPLS_EDP_PPS_FIX_DIS); | |
335c07b7 TI |
4778 | /* The below fixes the weird display corruption, a few pixels shifted |
4779 | * downward, on (only) LVDS of some HP laptops with IVY. | |
4780 | */ | |
3f704fa2 | 4781 | for_each_pipe(pipe) { |
dc4bd2d1 PZ |
4782 | val = I915_READ(TRANS_CHICKEN2(pipe)); |
4783 | val |= TRANS_CHICKEN2_TIMING_OVERRIDE; | |
4784 | val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED; | |
41aa3448 | 4785 | if (dev_priv->vbt.fdi_rx_polarity_inverted) |
3f704fa2 | 4786 | val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED; |
dc4bd2d1 PZ |
4787 | val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK; |
4788 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER; | |
4789 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH; | |
3f704fa2 PZ |
4790 | I915_WRITE(TRANS_CHICKEN2(pipe), val); |
4791 | } | |
3107bd48 DV |
4792 | /* WADP0ClockGatingDisable */ |
4793 | for_each_pipe(pipe) { | |
4794 | I915_WRITE(TRANS_CHICKEN1(pipe), | |
4795 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); | |
4796 | } | |
6f1d69b0 ED |
4797 | } |
4798 | ||
1d7aaa0c DV |
4799 | static void gen6_check_mch_setup(struct drm_device *dev) |
4800 | { | |
4801 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4802 | uint32_t tmp; | |
4803 | ||
4804 | tmp = I915_READ(MCH_SSKPD); | |
4805 | if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL) { | |
4806 | DRM_INFO("Wrong MCH_SSKPD value: 0x%08x\n", tmp); | |
4807 | DRM_INFO("This can cause pipe underruns and display issues.\n"); | |
4808 | DRM_INFO("Please upgrade your BIOS to fix this.\n"); | |
4809 | } | |
4810 | } | |
4811 | ||
1fa61106 | 4812 | static void gen6_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
4813 | { |
4814 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231e54f6 | 4815 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 4816 | |
231e54f6 | 4817 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
6f1d69b0 ED |
4818 | |
4819 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
4820 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
4821 | ILK_ELPIN_409_SELECT); | |
4822 | ||
ecdb4eb7 | 4823 | /* WaDisableHiZPlanesWhenMSAAEnabled:snb */ |
4283908e DV |
4824 | I915_WRITE(_3D_CHICKEN, |
4825 | _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB)); | |
4826 | ||
ecdb4eb7 | 4827 | /* WaSetupGtModeTdRowDispatch:snb */ |
6547fbdb DV |
4828 | if (IS_SNB_GT1(dev)) |
4829 | I915_WRITE(GEN6_GT_MODE, | |
4830 | _MASKED_BIT_ENABLE(GEN6_TD_FOUR_ROW_DISPATCH_DISABLE)); | |
4831 | ||
6f1d69b0 ED |
4832 | I915_WRITE(WM3_LP_ILK, 0); |
4833 | I915_WRITE(WM2_LP_ILK, 0); | |
4834 | I915_WRITE(WM1_LP_ILK, 0); | |
4835 | ||
6f1d69b0 | 4836 | I915_WRITE(CACHE_MODE_0, |
50743298 | 4837 | _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB)); |
6f1d69b0 ED |
4838 | |
4839 | I915_WRITE(GEN6_UCGCTL1, | |
4840 | I915_READ(GEN6_UCGCTL1) | | |
4841 | GEN6_BLBUNIT_CLOCK_GATE_DISABLE | | |
4842 | GEN6_CSUNIT_CLOCK_GATE_DISABLE); | |
4843 | ||
4844 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock | |
4845 | * gating disable must be set. Failure to set it results in | |
4846 | * flickering pixels due to Z write ordering failures after | |
4847 | * some amount of runtime in the Mesa "fire" demo, and Unigine | |
4848 | * Sanctuary and Tropics, and apparently anything else with | |
4849 | * alpha test or pixel discard. | |
4850 | * | |
4851 | * According to the spec, bit 11 (RCCUNIT) must also be set, | |
4852 | * but we didn't debug actual testcases to find it out. | |
0f846f81 | 4853 | * |
ecdb4eb7 DL |
4854 | * Also apply WaDisableVDSUnitClockGating:snb and |
4855 | * WaDisableRCPBUnitClockGating:snb. | |
6f1d69b0 ED |
4856 | */ |
4857 | I915_WRITE(GEN6_UCGCTL2, | |
0f846f81 | 4858 | GEN7_VDSUNIT_CLOCK_GATE_DISABLE | |
6f1d69b0 ED |
4859 | GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | |
4860 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); | |
4861 | ||
4862 | /* Bspec says we need to always set all mask bits. */ | |
26b6e44a KG |
4863 | I915_WRITE(_3D_CHICKEN3, (0xFFFF << 16) | |
4864 | _3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL); | |
6f1d69b0 ED |
4865 | |
4866 | /* | |
4867 | * According to the spec the following bits should be | |
4868 | * set in order to enable memory self-refresh and fbc: | |
4869 | * The bit21 and bit22 of 0x42000 | |
4870 | * The bit21 and bit22 of 0x42004 | |
4871 | * The bit5 and bit7 of 0x42020 | |
4872 | * The bit14 of 0x70180 | |
4873 | * The bit14 of 0x71180 | |
4bb35334 DL |
4874 | * |
4875 | * WaFbcAsynchFlipDisableFbcQueue:snb | |
6f1d69b0 ED |
4876 | */ |
4877 | I915_WRITE(ILK_DISPLAY_CHICKEN1, | |
4878 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
4879 | ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS); | |
4880 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
4881 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
4882 | ILK_DPARB_GATE | ILK_VSDPFD_FULL); | |
231e54f6 DL |
4883 | I915_WRITE(ILK_DSPCLK_GATE_D, |
4884 | I915_READ(ILK_DSPCLK_GATE_D) | | |
4885 | ILK_DPARBUNIT_CLOCK_GATE_ENABLE | | |
4886 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE); | |
6f1d69b0 | 4887 | |
0e088b8f | 4888 | g4x_disable_trickle_feed(dev); |
f8f2ac9a BW |
4889 | |
4890 | /* The default value should be 0x200 according to docs, but the two | |
4891 | * platforms I checked have a 0 for this. (Maybe BIOS overrides?) */ | |
4892 | I915_WRITE(GEN6_GT_MODE, _MASKED_BIT_DISABLE(0xffff)); | |
4893 | I915_WRITE(GEN6_GT_MODE, _MASKED_BIT_ENABLE(GEN6_GT_MODE_HI)); | |
3107bd48 DV |
4894 | |
4895 | cpt_init_clock_gating(dev); | |
1d7aaa0c DV |
4896 | |
4897 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
4898 | } |
4899 | ||
4900 | static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv) | |
4901 | { | |
4902 | uint32_t reg = I915_READ(GEN7_FF_THREAD_MODE); | |
4903 | ||
4904 | reg &= ~GEN7_FF_SCHED_MASK; | |
4905 | reg |= GEN7_FF_TS_SCHED_HW; | |
4906 | reg |= GEN7_FF_VS_SCHED_HW; | |
4907 | reg |= GEN7_FF_DS_SCHED_HW; | |
4908 | ||
41c0b3a8 BW |
4909 | if (IS_HASWELL(dev_priv->dev)) |
4910 | reg &= ~GEN7_FF_VS_REF_CNT_FFME; | |
4911 | ||
6f1d69b0 ED |
4912 | I915_WRITE(GEN7_FF_THREAD_MODE, reg); |
4913 | } | |
4914 | ||
17a303ec PZ |
4915 | static void lpt_init_clock_gating(struct drm_device *dev) |
4916 | { | |
4917 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4918 | ||
4919 | /* | |
4920 | * TODO: this bit should only be enabled when really needed, then | |
4921 | * disabled when not needed anymore in order to save power. | |
4922 | */ | |
4923 | if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) | |
4924 | I915_WRITE(SOUTH_DSPCLK_GATE_D, | |
4925 | I915_READ(SOUTH_DSPCLK_GATE_D) | | |
4926 | PCH_LP_PARTITION_LEVEL_DISABLE); | |
0a790cdb PZ |
4927 | |
4928 | /* WADPOClockGatingDisable:hsw */ | |
4929 | I915_WRITE(_TRANSA_CHICKEN1, | |
4930 | I915_READ(_TRANSA_CHICKEN1) | | |
4931 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); | |
17a303ec PZ |
4932 | } |
4933 | ||
7d708ee4 ID |
4934 | static void lpt_suspend_hw(struct drm_device *dev) |
4935 | { | |
4936 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4937 | ||
4938 | if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) { | |
4939 | uint32_t val = I915_READ(SOUTH_DSPCLK_GATE_D); | |
4940 | ||
4941 | val &= ~PCH_LP_PARTITION_LEVEL_DISABLE; | |
4942 | I915_WRITE(SOUTH_DSPCLK_GATE_D, val); | |
4943 | } | |
4944 | } | |
4945 | ||
cad2a2d7 ED |
4946 | static void haswell_init_clock_gating(struct drm_device *dev) |
4947 | { | |
4948 | struct drm_i915_private *dev_priv = dev->dev_private; | |
cad2a2d7 ED |
4949 | |
4950 | I915_WRITE(WM3_LP_ILK, 0); | |
4951 | I915_WRITE(WM2_LP_ILK, 0); | |
4952 | I915_WRITE(WM1_LP_ILK, 0); | |
4953 | ||
4954 | /* According to the spec, bit 13 (RCZUNIT) must be set on IVB. | |
ecdb4eb7 | 4955 | * This implements the WaDisableRCZUnitClockGating:hsw workaround. |
cad2a2d7 ED |
4956 | */ |
4957 | I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE); | |
4958 | ||
ecdb4eb7 | 4959 | /* Apply the WaDisableRHWOOptimizationForRenderHang:hsw workaround. */ |
cad2a2d7 ED |
4960 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
4961 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); | |
4962 | ||
ecdb4eb7 | 4963 | /* WaApplyL3ControlAndL3ChickenMode:hsw */ |
cad2a2d7 ED |
4964 | I915_WRITE(GEN7_L3CNTLREG1, |
4965 | GEN7_WA_FOR_GEN7_L3_CONTROL); | |
4966 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, | |
4967 | GEN7_WA_L3_CHICKEN_MODE); | |
4968 | ||
ecdb4eb7 | 4969 | /* This is required by WaCatErrorRejectionIssue:hsw */ |
cad2a2d7 ED |
4970 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
4971 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
4972 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
4973 | ||
ecdb4eb7 | 4974 | /* WaVSRefCountFullforceMissDisable:hsw */ |
cad2a2d7 ED |
4975 | gen7_setup_fixed_func_scheduler(dev_priv); |
4976 | ||
ecdb4eb7 | 4977 | /* WaDisable4x2SubspanOptimization:hsw */ |
cad2a2d7 ED |
4978 | I915_WRITE(CACHE_MODE_1, |
4979 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
1544d9d5 | 4980 | |
ecdb4eb7 | 4981 | /* WaSwitchSolVfFArbitrationPriority:hsw */ |
e3dff585 BW |
4982 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); |
4983 | ||
90a88643 PZ |
4984 | /* WaRsPkgCStateDisplayPMReq:hsw */ |
4985 | I915_WRITE(CHICKEN_PAR1_1, | |
4986 | I915_READ(CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES); | |
1544d9d5 | 4987 | |
17a303ec | 4988 | lpt_init_clock_gating(dev); |
cad2a2d7 ED |
4989 | } |
4990 | ||
1fa61106 | 4991 | static void ivybridge_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
4992 | { |
4993 | struct drm_i915_private *dev_priv = dev->dev_private; | |
20848223 | 4994 | uint32_t snpcr; |
6f1d69b0 | 4995 | |
6f1d69b0 ED |
4996 | I915_WRITE(WM3_LP_ILK, 0); |
4997 | I915_WRITE(WM2_LP_ILK, 0); | |
4998 | I915_WRITE(WM1_LP_ILK, 0); | |
4999 | ||
231e54f6 | 5000 | I915_WRITE(ILK_DSPCLK_GATE_D, ILK_VRHUNIT_CLOCK_GATE_DISABLE); |
6f1d69b0 | 5001 | |
ecdb4eb7 | 5002 | /* WaDisableEarlyCull:ivb */ |
87f8020e JB |
5003 | I915_WRITE(_3D_CHICKEN3, |
5004 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
5005 | ||
ecdb4eb7 | 5006 | /* WaDisableBackToBackFlipFix:ivb */ |
6f1d69b0 ED |
5007 | I915_WRITE(IVB_CHICKEN3, |
5008 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
5009 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
5010 | ||
ecdb4eb7 | 5011 | /* WaDisablePSDDualDispatchEnable:ivb */ |
12f3382b JB |
5012 | if (IS_IVB_GT1(dev)) |
5013 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, | |
5014 | _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
5015 | else | |
5016 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1_GT2, | |
5017 | _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
5018 | ||
ecdb4eb7 | 5019 | /* Apply the WaDisableRHWOOptimizationForRenderHang:ivb workaround. */ |
6f1d69b0 ED |
5020 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
5021 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); | |
5022 | ||
ecdb4eb7 | 5023 | /* WaApplyL3ControlAndL3ChickenMode:ivb */ |
6f1d69b0 ED |
5024 | I915_WRITE(GEN7_L3CNTLREG1, |
5025 | GEN7_WA_FOR_GEN7_L3_CONTROL); | |
5026 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, | |
8ab43976 JB |
5027 | GEN7_WA_L3_CHICKEN_MODE); |
5028 | if (IS_IVB_GT1(dev)) | |
5029 | I915_WRITE(GEN7_ROW_CHICKEN2, | |
5030 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
5031 | else | |
5032 | I915_WRITE(GEN7_ROW_CHICKEN2_GT2, | |
5033 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
5034 | ||
6f1d69b0 | 5035 | |
ecdb4eb7 | 5036 | /* WaForceL3Serialization:ivb */ |
61939d97 JB |
5037 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
5038 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
5039 | ||
0f846f81 JB |
5040 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock |
5041 | * gating disable must be set. Failure to set it results in | |
5042 | * flickering pixels due to Z write ordering failures after | |
5043 | * some amount of runtime in the Mesa "fire" demo, and Unigine | |
5044 | * Sanctuary and Tropics, and apparently anything else with | |
5045 | * alpha test or pixel discard. | |
5046 | * | |
5047 | * According to the spec, bit 11 (RCCUNIT) must also be set, | |
5048 | * but we didn't debug actual testcases to find it out. | |
5049 | * | |
5050 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. | |
ecdb4eb7 | 5051 | * This implements the WaDisableRCZUnitClockGating:ivb workaround. |
0f846f81 JB |
5052 | */ |
5053 | I915_WRITE(GEN6_UCGCTL2, | |
5054 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE | | |
5055 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); | |
5056 | ||
ecdb4eb7 | 5057 | /* This is required by WaCatErrorRejectionIssue:ivb */ |
6f1d69b0 ED |
5058 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
5059 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
5060 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
5061 | ||
0e088b8f | 5062 | g4x_disable_trickle_feed(dev); |
6f1d69b0 | 5063 | |
ecdb4eb7 | 5064 | /* WaVSRefCountFullforceMissDisable:ivb */ |
6f1d69b0 | 5065 | gen7_setup_fixed_func_scheduler(dev_priv); |
97e1930f | 5066 | |
ecdb4eb7 | 5067 | /* WaDisable4x2SubspanOptimization:ivb */ |
97e1930f DV |
5068 | I915_WRITE(CACHE_MODE_1, |
5069 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
20848223 BW |
5070 | |
5071 | snpcr = I915_READ(GEN6_MBCUNIT_SNPCR); | |
5072 | snpcr &= ~GEN6_MBC_SNPCR_MASK; | |
5073 | snpcr |= GEN6_MBC_SNPCR_MED; | |
5074 | I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr); | |
3107bd48 | 5075 | |
ab5c608b BW |
5076 | if (!HAS_PCH_NOP(dev)) |
5077 | cpt_init_clock_gating(dev); | |
1d7aaa0c DV |
5078 | |
5079 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
5080 | } |
5081 | ||
1fa61106 | 5082 | static void valleyview_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5083 | { |
5084 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6f1d69b0 | 5085 | |
d7fe0cc0 | 5086 | I915_WRITE(DSPCLK_GATE_D, VRHUNIT_CLOCK_GATE_DISABLE); |
6f1d69b0 | 5087 | |
ecdb4eb7 | 5088 | /* WaDisableEarlyCull:vlv */ |
87f8020e JB |
5089 | I915_WRITE(_3D_CHICKEN3, |
5090 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
5091 | ||
ecdb4eb7 | 5092 | /* WaDisableBackToBackFlipFix:vlv */ |
6f1d69b0 ED |
5093 | I915_WRITE(IVB_CHICKEN3, |
5094 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
5095 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
5096 | ||
ecdb4eb7 | 5097 | /* WaDisablePSDDualDispatchEnable:vlv */ |
12f3382b | 5098 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, |
d3bc0303 JB |
5099 | _MASKED_BIT_ENABLE(GEN7_MAX_PS_THREAD_DEP | |
5100 | GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
12f3382b | 5101 | |
ecdb4eb7 | 5102 | /* Apply the WaDisableRHWOOptimizationForRenderHang:vlv workaround. */ |
6f1d69b0 ED |
5103 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
5104 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); | |
5105 | ||
ecdb4eb7 | 5106 | /* WaApplyL3ControlAndL3ChickenMode:vlv */ |
d0cf5ead | 5107 | I915_WRITE(GEN7_L3CNTLREG1, I915_READ(GEN7_L3CNTLREG1) | GEN7_L3AGDIS); |
6f1d69b0 ED |
5108 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, GEN7_WA_L3_CHICKEN_MODE); |
5109 | ||
ecdb4eb7 | 5110 | /* WaForceL3Serialization:vlv */ |
61939d97 JB |
5111 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
5112 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
5113 | ||
ecdb4eb7 | 5114 | /* WaDisableDopClockGating:vlv */ |
8ab43976 JB |
5115 | I915_WRITE(GEN7_ROW_CHICKEN2, |
5116 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
5117 | ||
ecdb4eb7 | 5118 | /* This is required by WaCatErrorRejectionIssue:vlv */ |
6f1d69b0 ED |
5119 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
5120 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
5121 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
5122 | ||
0f846f81 JB |
5123 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock |
5124 | * gating disable must be set. Failure to set it results in | |
5125 | * flickering pixels due to Z write ordering failures after | |
5126 | * some amount of runtime in the Mesa "fire" demo, and Unigine | |
5127 | * Sanctuary and Tropics, and apparently anything else with | |
5128 | * alpha test or pixel discard. | |
5129 | * | |
5130 | * According to the spec, bit 11 (RCCUNIT) must also be set, | |
5131 | * but we didn't debug actual testcases to find it out. | |
5132 | * | |
5133 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. | |
ecdb4eb7 | 5134 | * This implements the WaDisableRCZUnitClockGating:vlv workaround. |
0f846f81 | 5135 | * |
ecdb4eb7 DL |
5136 | * Also apply WaDisableVDSUnitClockGating:vlv and |
5137 | * WaDisableRCPBUnitClockGating:vlv. | |
0f846f81 JB |
5138 | */ |
5139 | I915_WRITE(GEN6_UCGCTL2, | |
5140 | GEN7_VDSUNIT_CLOCK_GATE_DISABLE | | |
6edaa7fc | 5141 | GEN7_TDLUNIT_CLOCK_GATE_DISABLE | |
0f846f81 JB |
5142 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE | |
5143 | GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | | |
5144 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); | |
5145 | ||
e3f33d46 JB |
5146 | I915_WRITE(GEN7_UCGCTL4, GEN7_L3BANK2X_CLOCK_GATE_DISABLE); |
5147 | ||
e0d8d59b | 5148 | I915_WRITE(MI_ARB_VLV, MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE); |
6f1d69b0 | 5149 | |
6b26c86d DV |
5150 | I915_WRITE(CACHE_MODE_1, |
5151 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
7983117f | 5152 | |
2d809570 | 5153 | /* |
ecdb4eb7 | 5154 | * WaDisableVLVClockGating_VBIIssue:vlv |
2d809570 JB |
5155 | * Disable clock gating on th GCFG unit to prevent a delay |
5156 | * in the reporting of vblank events. | |
5157 | */ | |
4e8c84a5 JB |
5158 | I915_WRITE(VLV_GUNIT_CLOCK_GATE, 0xffffffff); |
5159 | ||
5160 | /* Conservative clock gating settings for now */ | |
5161 | I915_WRITE(0x9400, 0xffffffff); | |
5162 | I915_WRITE(0x9404, 0xffffffff); | |
5163 | I915_WRITE(0x9408, 0xffffffff); | |
5164 | I915_WRITE(0x940c, 0xffffffff); | |
5165 | I915_WRITE(0x9410, 0xffffffff); | |
5166 | I915_WRITE(0x9414, 0xffffffff); | |
5167 | I915_WRITE(0x9418, 0xffffffff); | |
6f1d69b0 ED |
5168 | } |
5169 | ||
1fa61106 | 5170 | static void g4x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5171 | { |
5172 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5173 | uint32_t dspclk_gate; | |
5174 | ||
5175 | I915_WRITE(RENCLK_GATE_D1, 0); | |
5176 | I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE | | |
5177 | GS_UNIT_CLOCK_GATE_DISABLE | | |
5178 | CL_UNIT_CLOCK_GATE_DISABLE); | |
5179 | I915_WRITE(RAMCLK_GATE_D, 0); | |
5180 | dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE | | |
5181 | OVRUNIT_CLOCK_GATE_DISABLE | | |
5182 | OVCUNIT_CLOCK_GATE_DISABLE; | |
5183 | if (IS_GM45(dev)) | |
5184 | dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE; | |
5185 | I915_WRITE(DSPCLK_GATE_D, dspclk_gate); | |
4358a374 DV |
5186 | |
5187 | /* WaDisableRenderCachePipelinedFlush */ | |
5188 | I915_WRITE(CACHE_MODE_0, | |
5189 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
de1aa629 | 5190 | |
0e088b8f | 5191 | g4x_disable_trickle_feed(dev); |
6f1d69b0 ED |
5192 | } |
5193 | ||
1fa61106 | 5194 | static void crestline_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5195 | { |
5196 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5197 | ||
5198 | I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE); | |
5199 | I915_WRITE(RENCLK_GATE_D2, 0); | |
5200 | I915_WRITE(DSPCLK_GATE_D, 0); | |
5201 | I915_WRITE(RAMCLK_GATE_D, 0); | |
5202 | I915_WRITE16(DEUC, 0); | |
20f94967 VS |
5203 | I915_WRITE(MI_ARB_STATE, |
5204 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
5205 | } |
5206 | ||
1fa61106 | 5207 | static void broadwater_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5208 | { |
5209 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5210 | ||
5211 | I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE | | |
5212 | I965_RCC_CLOCK_GATE_DISABLE | | |
5213 | I965_RCPB_CLOCK_GATE_DISABLE | | |
5214 | I965_ISC_CLOCK_GATE_DISABLE | | |
5215 | I965_FBC_CLOCK_GATE_DISABLE); | |
5216 | I915_WRITE(RENCLK_GATE_D2, 0); | |
20f94967 VS |
5217 | I915_WRITE(MI_ARB_STATE, |
5218 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
5219 | } |
5220 | ||
1fa61106 | 5221 | static void gen3_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5222 | { |
5223 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5224 | u32 dstate = I915_READ(D_STATE); | |
5225 | ||
5226 | dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING | | |
5227 | DSTATE_DOT_CLOCK_GATING; | |
5228 | I915_WRITE(D_STATE, dstate); | |
13a86b85 CW |
5229 | |
5230 | if (IS_PINEVIEW(dev)) | |
5231 | I915_WRITE(ECOSKPD, _MASKED_BIT_ENABLE(ECO_GATING_CX_ONLY)); | |
974a3b0f DV |
5232 | |
5233 | /* IIR "flip pending" means done if this bit is set */ | |
5234 | I915_WRITE(ECOSKPD, _MASKED_BIT_DISABLE(ECO_FLIP_DONE)); | |
6f1d69b0 ED |
5235 | } |
5236 | ||
1fa61106 | 5237 | static void i85x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5238 | { |
5239 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5240 | ||
5241 | I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE); | |
5242 | } | |
5243 | ||
1fa61106 | 5244 | static void i830_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5245 | { |
5246 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5247 | ||
5248 | I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE); | |
5249 | } | |
5250 | ||
6f1d69b0 ED |
5251 | void intel_init_clock_gating(struct drm_device *dev) |
5252 | { | |
5253 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5254 | ||
5255 | dev_priv->display.init_clock_gating(dev); | |
6f1d69b0 ED |
5256 | } |
5257 | ||
7d708ee4 ID |
5258 | void intel_suspend_hw(struct drm_device *dev) |
5259 | { | |
5260 | if (HAS_PCH_LPT(dev)) | |
5261 | lpt_suspend_hw(dev); | |
5262 | } | |
5263 | ||
15d199ea PZ |
5264 | /** |
5265 | * We should only use the power well if we explicitly asked the hardware to | |
5266 | * enable it, so check if it's enabled and also check if we've requested it to | |
5267 | * be enabled. | |
5268 | */ | |
b97186f0 PZ |
5269 | bool intel_display_power_enabled(struct drm_device *dev, |
5270 | enum intel_display_power_domain domain) | |
15d199ea PZ |
5271 | { |
5272 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5273 | ||
b97186f0 PZ |
5274 | if (!HAS_POWER_WELL(dev)) |
5275 | return true; | |
5276 | ||
5277 | switch (domain) { | |
5278 | case POWER_DOMAIN_PIPE_A: | |
5279 | case POWER_DOMAIN_TRANSCODER_EDP: | |
5280 | return true; | |
5281 | case POWER_DOMAIN_PIPE_B: | |
5282 | case POWER_DOMAIN_PIPE_C: | |
5283 | case POWER_DOMAIN_PIPE_A_PANEL_FITTER: | |
5284 | case POWER_DOMAIN_PIPE_B_PANEL_FITTER: | |
5285 | case POWER_DOMAIN_PIPE_C_PANEL_FITTER: | |
5286 | case POWER_DOMAIN_TRANSCODER_A: | |
5287 | case POWER_DOMAIN_TRANSCODER_B: | |
5288 | case POWER_DOMAIN_TRANSCODER_C: | |
15d199ea | 5289 | return I915_READ(HSW_PWR_WELL_DRIVER) == |
6aedd1f5 | 5290 | (HSW_PWR_WELL_ENABLE_REQUEST | HSW_PWR_WELL_STATE_ENABLED); |
b97186f0 PZ |
5291 | default: |
5292 | BUG(); | |
5293 | } | |
15d199ea PZ |
5294 | } |
5295 | ||
a38911a3 | 5296 | static void __intel_set_power_well(struct drm_device *dev, bool enable) |
d0d3e513 ED |
5297 | { |
5298 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fa42e23c PZ |
5299 | bool is_enabled, enable_requested; |
5300 | uint32_t tmp; | |
d0d3e513 | 5301 | |
fa42e23c | 5302 | tmp = I915_READ(HSW_PWR_WELL_DRIVER); |
6aedd1f5 PZ |
5303 | is_enabled = tmp & HSW_PWR_WELL_STATE_ENABLED; |
5304 | enable_requested = tmp & HSW_PWR_WELL_ENABLE_REQUEST; | |
d0d3e513 | 5305 | |
fa42e23c PZ |
5306 | if (enable) { |
5307 | if (!enable_requested) | |
6aedd1f5 PZ |
5308 | I915_WRITE(HSW_PWR_WELL_DRIVER, |
5309 | HSW_PWR_WELL_ENABLE_REQUEST); | |
d0d3e513 | 5310 | |
fa42e23c PZ |
5311 | if (!is_enabled) { |
5312 | DRM_DEBUG_KMS("Enabling power well\n"); | |
5313 | if (wait_for((I915_READ(HSW_PWR_WELL_DRIVER) & | |
6aedd1f5 | 5314 | HSW_PWR_WELL_STATE_ENABLED), 20)) |
fa42e23c PZ |
5315 | DRM_ERROR("Timeout enabling power well\n"); |
5316 | } | |
5317 | } else { | |
5318 | if (enable_requested) { | |
9dbd8feb PZ |
5319 | unsigned long irqflags; |
5320 | enum pipe p; | |
5321 | ||
fa42e23c | 5322 | I915_WRITE(HSW_PWR_WELL_DRIVER, 0); |
9dbd8feb | 5323 | POSTING_READ(HSW_PWR_WELL_DRIVER); |
fa42e23c | 5324 | DRM_DEBUG_KMS("Requesting to disable the power well\n"); |
9dbd8feb PZ |
5325 | |
5326 | /* | |
5327 | * After this, the registers on the pipes that are part | |
5328 | * of the power well will become zero, so we have to | |
5329 | * adjust our counters according to that. | |
5330 | * | |
5331 | * FIXME: Should we do this in general in | |
5332 | * drm_vblank_post_modeset? | |
5333 | */ | |
5334 | spin_lock_irqsave(&dev->vbl_lock, irqflags); | |
5335 | for_each_pipe(p) | |
5336 | if (p != PIPE_A) | |
5337 | dev->last_vblank[p] = 0; | |
5338 | spin_unlock_irqrestore(&dev->vbl_lock, irqflags); | |
d0d3e513 ED |
5339 | } |
5340 | } | |
fa42e23c | 5341 | } |
d0d3e513 | 5342 | |
a38911a3 WX |
5343 | static struct i915_power_well *hsw_pwr; |
5344 | ||
5345 | /* Display audio driver power well request */ | |
5346 | void i915_request_power_well(void) | |
5347 | { | |
5348 | if (WARN_ON(!hsw_pwr)) | |
5349 | return; | |
5350 | ||
5351 | spin_lock_irq(&hsw_pwr->lock); | |
5352 | if (!hsw_pwr->count++ && | |
5353 | !hsw_pwr->i915_request) | |
5354 | __intel_set_power_well(hsw_pwr->device, true); | |
5355 | spin_unlock_irq(&hsw_pwr->lock); | |
5356 | } | |
5357 | EXPORT_SYMBOL_GPL(i915_request_power_well); | |
5358 | ||
5359 | /* Display audio driver power well release */ | |
5360 | void i915_release_power_well(void) | |
5361 | { | |
5362 | if (WARN_ON(!hsw_pwr)) | |
5363 | return; | |
5364 | ||
5365 | spin_lock_irq(&hsw_pwr->lock); | |
5366 | WARN_ON(!hsw_pwr->count); | |
5367 | if (!--hsw_pwr->count && | |
5368 | !hsw_pwr->i915_request) | |
5369 | __intel_set_power_well(hsw_pwr->device, false); | |
5370 | spin_unlock_irq(&hsw_pwr->lock); | |
5371 | } | |
5372 | EXPORT_SYMBOL_GPL(i915_release_power_well); | |
5373 | ||
5374 | int i915_init_power_well(struct drm_device *dev) | |
5375 | { | |
5376 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5377 | ||
5378 | hsw_pwr = &dev_priv->power_well; | |
5379 | ||
5380 | hsw_pwr->device = dev; | |
5381 | spin_lock_init(&hsw_pwr->lock); | |
5382 | hsw_pwr->count = 0; | |
5383 | ||
5384 | return 0; | |
5385 | } | |
5386 | ||
5387 | void i915_remove_power_well(struct drm_device *dev) | |
5388 | { | |
5389 | hsw_pwr = NULL; | |
5390 | } | |
5391 | ||
5392 | void intel_set_power_well(struct drm_device *dev, bool enable) | |
5393 | { | |
5394 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5395 | struct i915_power_well *power_well = &dev_priv->power_well; | |
5396 | ||
5397 | if (!HAS_POWER_WELL(dev)) | |
5398 | return; | |
5399 | ||
5400 | if (!i915_disable_power_well && !enable) | |
5401 | return; | |
5402 | ||
5403 | spin_lock_irq(&power_well->lock); | |
5404 | power_well->i915_request = enable; | |
5405 | ||
5406 | /* only reject "disable" power well request */ | |
5407 | if (power_well->count && !enable) { | |
5408 | spin_unlock_irq(&power_well->lock); | |
5409 | return; | |
5410 | } | |
5411 | ||
5412 | __intel_set_power_well(dev, enable); | |
5413 | spin_unlock_irq(&power_well->lock); | |
5414 | } | |
5415 | ||
fa42e23c PZ |
5416 | /* |
5417 | * Starting with Haswell, we have a "Power Down Well" that can be turned off | |
5418 | * when not needed anymore. We have 4 registers that can request the power well | |
5419 | * to be enabled, and it will only be disabled if none of the registers is | |
5420 | * requesting it to be enabled. | |
d0d3e513 | 5421 | */ |
fa42e23c | 5422 | void intel_init_power_well(struct drm_device *dev) |
d0d3e513 ED |
5423 | { |
5424 | struct drm_i915_private *dev_priv = dev->dev_private; | |
d0d3e513 | 5425 | |
86d52df6 | 5426 | if (!HAS_POWER_WELL(dev)) |
d0d3e513 ED |
5427 | return; |
5428 | ||
fa42e23c PZ |
5429 | /* For now, we need the power well to be always enabled. */ |
5430 | intel_set_power_well(dev, true); | |
d0d3e513 | 5431 | |
fa42e23c PZ |
5432 | /* We're taking over the BIOS, so clear any requests made by it since |
5433 | * the driver is in charge now. */ | |
6aedd1f5 | 5434 | if (I915_READ(HSW_PWR_WELL_BIOS) & HSW_PWR_WELL_ENABLE_REQUEST) |
fa42e23c | 5435 | I915_WRITE(HSW_PWR_WELL_BIOS, 0); |
d0d3e513 ED |
5436 | } |
5437 | ||
c67a470b PZ |
5438 | /* Disables PC8 so we can use the GMBUS and DP AUX interrupts. */ |
5439 | void intel_aux_display_runtime_get(struct drm_i915_private *dev_priv) | |
5440 | { | |
5441 | hsw_disable_package_c8(dev_priv); | |
5442 | } | |
5443 | ||
5444 | void intel_aux_display_runtime_put(struct drm_i915_private *dev_priv) | |
5445 | { | |
5446 | hsw_enable_package_c8(dev_priv); | |
5447 | } | |
5448 | ||
1fa61106 ED |
5449 | /* Set up chip specific power management-related functions */ |
5450 | void intel_init_pm(struct drm_device *dev) | |
5451 | { | |
5452 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5453 | ||
5454 | if (I915_HAS_FBC(dev)) { | |
5455 | if (HAS_PCH_SPLIT(dev)) { | |
5456 | dev_priv->display.fbc_enabled = ironlake_fbc_enabled; | |
891348b2 | 5457 | if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) |
abe959c7 RV |
5458 | dev_priv->display.enable_fbc = |
5459 | gen7_enable_fbc; | |
5460 | else | |
5461 | dev_priv->display.enable_fbc = | |
5462 | ironlake_enable_fbc; | |
1fa61106 ED |
5463 | dev_priv->display.disable_fbc = ironlake_disable_fbc; |
5464 | } else if (IS_GM45(dev)) { | |
5465 | dev_priv->display.fbc_enabled = g4x_fbc_enabled; | |
5466 | dev_priv->display.enable_fbc = g4x_enable_fbc; | |
5467 | dev_priv->display.disable_fbc = g4x_disable_fbc; | |
5468 | } else if (IS_CRESTLINE(dev)) { | |
5469 | dev_priv->display.fbc_enabled = i8xx_fbc_enabled; | |
5470 | dev_priv->display.enable_fbc = i8xx_enable_fbc; | |
5471 | dev_priv->display.disable_fbc = i8xx_disable_fbc; | |
5472 | } | |
5473 | /* 855GM needs testing */ | |
5474 | } | |
5475 | ||
c921aba8 DV |
5476 | /* For cxsr */ |
5477 | if (IS_PINEVIEW(dev)) | |
5478 | i915_pineview_get_mem_freq(dev); | |
5479 | else if (IS_GEN5(dev)) | |
5480 | i915_ironlake_get_mem_freq(dev); | |
5481 | ||
1fa61106 ED |
5482 | /* For FIFO watermark updates */ |
5483 | if (HAS_PCH_SPLIT(dev)) { | |
53615a5e VS |
5484 | intel_setup_wm_latency(dev); |
5485 | ||
1fa61106 | 5486 | if (IS_GEN5(dev)) { |
53615a5e VS |
5487 | if (dev_priv->wm.pri_latency[1] && |
5488 | dev_priv->wm.spr_latency[1] && | |
5489 | dev_priv->wm.cur_latency[1]) | |
1fa61106 ED |
5490 | dev_priv->display.update_wm = ironlake_update_wm; |
5491 | else { | |
5492 | DRM_DEBUG_KMS("Failed to get proper latency. " | |
5493 | "Disable CxSR\n"); | |
5494 | dev_priv->display.update_wm = NULL; | |
5495 | } | |
5496 | dev_priv->display.init_clock_gating = ironlake_init_clock_gating; | |
5497 | } else if (IS_GEN6(dev)) { | |
53615a5e VS |
5498 | if (dev_priv->wm.pri_latency[0] && |
5499 | dev_priv->wm.spr_latency[0] && | |
5500 | dev_priv->wm.cur_latency[0]) { | |
1fa61106 ED |
5501 | dev_priv->display.update_wm = sandybridge_update_wm; |
5502 | dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm; | |
5503 | } else { | |
5504 | DRM_DEBUG_KMS("Failed to read display plane latency. " | |
5505 | "Disable CxSR\n"); | |
5506 | dev_priv->display.update_wm = NULL; | |
5507 | } | |
5508 | dev_priv->display.init_clock_gating = gen6_init_clock_gating; | |
5509 | } else if (IS_IVYBRIDGE(dev)) { | |
53615a5e VS |
5510 | if (dev_priv->wm.pri_latency[0] && |
5511 | dev_priv->wm.spr_latency[0] && | |
5512 | dev_priv->wm.cur_latency[0]) { | |
c43d0188 | 5513 | dev_priv->display.update_wm = ivybridge_update_wm; |
1fa61106 ED |
5514 | dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm; |
5515 | } else { | |
5516 | DRM_DEBUG_KMS("Failed to read display plane latency. " | |
5517 | "Disable CxSR\n"); | |
5518 | dev_priv->display.update_wm = NULL; | |
5519 | } | |
5520 | dev_priv->display.init_clock_gating = ivybridge_init_clock_gating; | |
6b8a5eeb | 5521 | } else if (IS_HASWELL(dev)) { |
53615a5e VS |
5522 | if (dev_priv->wm.pri_latency[0] && |
5523 | dev_priv->wm.spr_latency[0] && | |
5524 | dev_priv->wm.cur_latency[0]) { | |
1011d8c4 | 5525 | dev_priv->display.update_wm = haswell_update_wm; |
526682e9 PZ |
5526 | dev_priv->display.update_sprite_wm = |
5527 | haswell_update_sprite_wm; | |
6b8a5eeb ED |
5528 | } else { |
5529 | DRM_DEBUG_KMS("Failed to read display plane latency. " | |
5530 | "Disable CxSR\n"); | |
5531 | dev_priv->display.update_wm = NULL; | |
5532 | } | |
cad2a2d7 | 5533 | dev_priv->display.init_clock_gating = haswell_init_clock_gating; |
1fa61106 ED |
5534 | } else |
5535 | dev_priv->display.update_wm = NULL; | |
5536 | } else if (IS_VALLEYVIEW(dev)) { | |
5537 | dev_priv->display.update_wm = valleyview_update_wm; | |
5538 | dev_priv->display.init_clock_gating = | |
5539 | valleyview_init_clock_gating; | |
1fa61106 ED |
5540 | } else if (IS_PINEVIEW(dev)) { |
5541 | if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev), | |
5542 | dev_priv->is_ddr3, | |
5543 | dev_priv->fsb_freq, | |
5544 | dev_priv->mem_freq)) { | |
5545 | DRM_INFO("failed to find known CxSR latency " | |
5546 | "(found ddr%s fsb freq %d, mem freq %d), " | |
5547 | "disabling CxSR\n", | |
5548 | (dev_priv->is_ddr3 == 1) ? "3" : "2", | |
5549 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
5550 | /* Disable CxSR and never update its watermark again */ | |
5551 | pineview_disable_cxsr(dev); | |
5552 | dev_priv->display.update_wm = NULL; | |
5553 | } else | |
5554 | dev_priv->display.update_wm = pineview_update_wm; | |
5555 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; | |
5556 | } else if (IS_G4X(dev)) { | |
5557 | dev_priv->display.update_wm = g4x_update_wm; | |
5558 | dev_priv->display.init_clock_gating = g4x_init_clock_gating; | |
5559 | } else if (IS_GEN4(dev)) { | |
5560 | dev_priv->display.update_wm = i965_update_wm; | |
5561 | if (IS_CRESTLINE(dev)) | |
5562 | dev_priv->display.init_clock_gating = crestline_init_clock_gating; | |
5563 | else if (IS_BROADWATER(dev)) | |
5564 | dev_priv->display.init_clock_gating = broadwater_init_clock_gating; | |
5565 | } else if (IS_GEN3(dev)) { | |
5566 | dev_priv->display.update_wm = i9xx_update_wm; | |
5567 | dev_priv->display.get_fifo_size = i9xx_get_fifo_size; | |
5568 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; | |
5569 | } else if (IS_I865G(dev)) { | |
5570 | dev_priv->display.update_wm = i830_update_wm; | |
5571 | dev_priv->display.init_clock_gating = i85x_init_clock_gating; | |
5572 | dev_priv->display.get_fifo_size = i830_get_fifo_size; | |
5573 | } else if (IS_I85X(dev)) { | |
5574 | dev_priv->display.update_wm = i9xx_update_wm; | |
5575 | dev_priv->display.get_fifo_size = i85x_get_fifo_size; | |
5576 | dev_priv->display.init_clock_gating = i85x_init_clock_gating; | |
5577 | } else { | |
5578 | dev_priv->display.update_wm = i830_update_wm; | |
5579 | dev_priv->display.init_clock_gating = i830_init_clock_gating; | |
5580 | if (IS_845G(dev)) | |
5581 | dev_priv->display.get_fifo_size = i845_get_fifo_size; | |
5582 | else | |
5583 | dev_priv->display.get_fifo_size = i830_get_fifo_size; | |
5584 | } | |
5585 | } | |
5586 | ||
42c0526c BW |
5587 | int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u8 mbox, u32 *val) |
5588 | { | |
4fc688ce | 5589 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c BW |
5590 | |
5591 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
5592 | DRM_DEBUG_DRIVER("warning: pcode (read) mailbox access failed\n"); | |
5593 | return -EAGAIN; | |
5594 | } | |
5595 | ||
5596 | I915_WRITE(GEN6_PCODE_DATA, *val); | |
5597 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); | |
5598 | ||
5599 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, | |
5600 | 500)) { | |
5601 | DRM_ERROR("timeout waiting for pcode read (%d) to finish\n", mbox); | |
5602 | return -ETIMEDOUT; | |
5603 | } | |
5604 | ||
5605 | *val = I915_READ(GEN6_PCODE_DATA); | |
5606 | I915_WRITE(GEN6_PCODE_DATA, 0); | |
5607 | ||
5608 | return 0; | |
5609 | } | |
5610 | ||
5611 | int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val) | |
5612 | { | |
4fc688ce | 5613 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c BW |
5614 | |
5615 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
5616 | DRM_DEBUG_DRIVER("warning: pcode (write) mailbox access failed\n"); | |
5617 | return -EAGAIN; | |
5618 | } | |
5619 | ||
5620 | I915_WRITE(GEN6_PCODE_DATA, val); | |
5621 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); | |
5622 | ||
5623 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, | |
5624 | 500)) { | |
5625 | DRM_ERROR("timeout waiting for pcode write (%d) to finish\n", mbox); | |
5626 | return -ETIMEDOUT; | |
5627 | } | |
5628 | ||
5629 | I915_WRITE(GEN6_PCODE_DATA, 0); | |
5630 | ||
5631 | return 0; | |
5632 | } | |
a0e4e199 | 5633 | |
855ba3be JB |
5634 | int vlv_gpu_freq(int ddr_freq, int val) |
5635 | { | |
5636 | int mult, base; | |
5637 | ||
5638 | switch (ddr_freq) { | |
5639 | case 800: | |
5640 | mult = 20; | |
5641 | base = 120; | |
5642 | break; | |
5643 | case 1066: | |
5644 | mult = 22; | |
5645 | base = 133; | |
5646 | break; | |
5647 | case 1333: | |
5648 | mult = 21; | |
5649 | base = 125; | |
5650 | break; | |
5651 | default: | |
5652 | return -1; | |
5653 | } | |
5654 | ||
5655 | return ((val - 0xbd) * mult) + base; | |
5656 | } | |
5657 | ||
5658 | int vlv_freq_opcode(int ddr_freq, int val) | |
5659 | { | |
5660 | int mult, base; | |
5661 | ||
5662 | switch (ddr_freq) { | |
5663 | case 800: | |
5664 | mult = 20; | |
5665 | base = 120; | |
5666 | break; | |
5667 | case 1066: | |
5668 | mult = 22; | |
5669 | base = 133; | |
5670 | break; | |
5671 | case 1333: | |
5672 | mult = 21; | |
5673 | base = 125; | |
5674 | break; | |
5675 | default: | |
5676 | return -1; | |
5677 | } | |
5678 | ||
5679 | val /= mult; | |
5680 | val -= base / mult; | |
5681 | val += 0xbd; | |
5682 | ||
5683 | if (val > 0xea) | |
5684 | val = 0xea; | |
5685 | ||
5686 | return val; | |
5687 | } | |
5688 | ||
907b28c5 CW |
5689 | void intel_pm_init(struct drm_device *dev) |
5690 | { | |
5691 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5692 | ||
5693 | INIT_DELAYED_WORK(&dev_priv->rps.delayed_resume_work, | |
5694 | intel_gen6_powersave_work); | |
5695 | } | |
5696 |