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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 | |
dc39fff7 BW |
35 | /** |
36 | * RC6 is a special power stage which allows the GPU to enter an very | |
37 | * low-voltage mode when idle, using down to 0V while at this stage. This | |
38 | * stage is entered automatically when the GPU is idle when RC6 support is | |
39 | * enabled, and as soon as new workload arises GPU wakes up automatically as well. | |
40 | * | |
41 | * There are different RC6 modes available in Intel GPU, which differentiate | |
42 | * among each other with the latency required to enter and leave RC6 and | |
43 | * voltage consumed by the GPU in different states. | |
44 | * | |
45 | * The combination of the following flags define which states GPU is allowed | |
46 | * to enter, while RC6 is the normal RC6 state, RC6p is the deep RC6, and | |
47 | * RC6pp is deepest RC6. Their support by hardware varies according to the | |
48 | * GPU, BIOS, chipset and platform. RC6 is usually the safest one and the one | |
49 | * which brings the most power savings; deeper states save more power, but | |
50 | * require higher latency to switch to and wake up. | |
51 | */ | |
52 | #define INTEL_RC6_ENABLE (1<<0) | |
53 | #define INTEL_RC6p_ENABLE (1<<1) | |
54 | #define INTEL_RC6pp_ENABLE (1<<2) | |
55 | ||
f6750b3c ED |
56 | /* FBC, or Frame Buffer Compression, is a technique employed to compress the |
57 | * framebuffer contents in-memory, aiming at reducing the required bandwidth | |
58 | * during in-memory transfers and, therefore, reduce the power packet. | |
85208be0 | 59 | * |
f6750b3c ED |
60 | * The benefits of FBC are mostly visible with solid backgrounds and |
61 | * variation-less patterns. | |
85208be0 | 62 | * |
f6750b3c ED |
63 | * FBC-related functionality can be enabled by the means of the |
64 | * i915.i915_enable_fbc parameter | |
85208be0 ED |
65 | */ |
66 | ||
1fa61106 | 67 | static void i8xx_disable_fbc(struct drm_device *dev) |
85208be0 ED |
68 | { |
69 | struct drm_i915_private *dev_priv = dev->dev_private; | |
70 | u32 fbc_ctl; | |
71 | ||
72 | /* Disable compression */ | |
73 | fbc_ctl = I915_READ(FBC_CONTROL); | |
74 | if ((fbc_ctl & FBC_CTL_EN) == 0) | |
75 | return; | |
76 | ||
77 | fbc_ctl &= ~FBC_CTL_EN; | |
78 | I915_WRITE(FBC_CONTROL, fbc_ctl); | |
79 | ||
80 | /* Wait for compressing bit to clear */ | |
81 | if (wait_for((I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING) == 0, 10)) { | |
82 | DRM_DEBUG_KMS("FBC idle timed out\n"); | |
83 | return; | |
84 | } | |
85 | ||
86 | DRM_DEBUG_KMS("disabled FBC\n"); | |
87 | } | |
88 | ||
1fa61106 | 89 | static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
85208be0 ED |
90 | { |
91 | struct drm_device *dev = crtc->dev; | |
92 | struct drm_i915_private *dev_priv = dev->dev_private; | |
93 | struct drm_framebuffer *fb = crtc->fb; | |
94 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
95 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
96 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
97 | int cfb_pitch; | |
98 | int plane, i; | |
99 | u32 fbc_ctl, fbc_ctl2; | |
100 | ||
5c3fe8b0 | 101 | cfb_pitch = dev_priv->fbc.size / FBC_LL_SIZE; |
85208be0 ED |
102 | if (fb->pitches[0] < cfb_pitch) |
103 | cfb_pitch = fb->pitches[0]; | |
104 | ||
105 | /* FBC_CTL wants 64B units */ | |
106 | cfb_pitch = (cfb_pitch / 64) - 1; | |
107 | plane = intel_crtc->plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB; | |
108 | ||
109 | /* Clear old tags */ | |
110 | for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++) | |
111 | I915_WRITE(FBC_TAG + (i * 4), 0); | |
112 | ||
113 | /* Set it up... */ | |
114 | fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | FBC_CTL_CPU_FENCE; | |
115 | fbc_ctl2 |= plane; | |
116 | I915_WRITE(FBC_CONTROL2, fbc_ctl2); | |
117 | I915_WRITE(FBC_FENCE_OFF, crtc->y); | |
118 | ||
119 | /* enable it... */ | |
120 | fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC; | |
121 | if (IS_I945GM(dev)) | |
122 | fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */ | |
123 | fbc_ctl |= (cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT; | |
124 | fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT; | |
125 | fbc_ctl |= obj->fence_reg; | |
126 | I915_WRITE(FBC_CONTROL, fbc_ctl); | |
127 | ||
84f44ce7 VS |
128 | DRM_DEBUG_KMS("enabled FBC, pitch %d, yoff %d, plane %c, ", |
129 | cfb_pitch, crtc->y, plane_name(intel_crtc->plane)); | |
85208be0 ED |
130 | } |
131 | ||
1fa61106 | 132 | static bool i8xx_fbc_enabled(struct drm_device *dev) |
85208be0 ED |
133 | { |
134 | struct drm_i915_private *dev_priv = dev->dev_private; | |
135 | ||
136 | return I915_READ(FBC_CONTROL) & FBC_CTL_EN; | |
137 | } | |
138 | ||
1fa61106 | 139 | static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
85208be0 ED |
140 | { |
141 | struct drm_device *dev = crtc->dev; | |
142 | struct drm_i915_private *dev_priv = dev->dev_private; | |
143 | struct drm_framebuffer *fb = crtc->fb; | |
144 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
145 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
146 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
147 | int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB; | |
148 | unsigned long stall_watermark = 200; | |
149 | u32 dpfc_ctl; | |
150 | ||
151 | dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X; | |
152 | dpfc_ctl |= DPFC_CTL_FENCE_EN | obj->fence_reg; | |
153 | I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY); | |
154 | ||
155 | I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN | | |
156 | (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) | | |
157 | (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT)); | |
158 | I915_WRITE(DPFC_FENCE_YOFF, crtc->y); | |
159 | ||
160 | /* enable it... */ | |
161 | I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN); | |
162 | ||
84f44ce7 | 163 | DRM_DEBUG_KMS("enabled fbc on plane %c\n", plane_name(intel_crtc->plane)); |
85208be0 ED |
164 | } |
165 | ||
1fa61106 | 166 | static void g4x_disable_fbc(struct drm_device *dev) |
85208be0 ED |
167 | { |
168 | struct drm_i915_private *dev_priv = dev->dev_private; | |
169 | u32 dpfc_ctl; | |
170 | ||
171 | /* Disable compression */ | |
172 | dpfc_ctl = I915_READ(DPFC_CONTROL); | |
173 | if (dpfc_ctl & DPFC_CTL_EN) { | |
174 | dpfc_ctl &= ~DPFC_CTL_EN; | |
175 | I915_WRITE(DPFC_CONTROL, dpfc_ctl); | |
176 | ||
177 | DRM_DEBUG_KMS("disabled FBC\n"); | |
178 | } | |
179 | } | |
180 | ||
1fa61106 | 181 | static bool g4x_fbc_enabled(struct drm_device *dev) |
85208be0 ED |
182 | { |
183 | struct drm_i915_private *dev_priv = dev->dev_private; | |
184 | ||
185 | return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN; | |
186 | } | |
187 | ||
188 | static void sandybridge_blit_fbc_update(struct drm_device *dev) | |
189 | { | |
190 | struct drm_i915_private *dev_priv = dev->dev_private; | |
191 | u32 blt_ecoskpd; | |
192 | ||
193 | /* Make sure blitter notifies FBC of writes */ | |
194 | gen6_gt_force_wake_get(dev_priv); | |
195 | blt_ecoskpd = I915_READ(GEN6_BLITTER_ECOSKPD); | |
196 | blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY << | |
197 | GEN6_BLITTER_LOCK_SHIFT; | |
198 | I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd); | |
199 | blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY; | |
200 | I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd); | |
201 | blt_ecoskpd &= ~(GEN6_BLITTER_FBC_NOTIFY << | |
202 | GEN6_BLITTER_LOCK_SHIFT); | |
203 | I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd); | |
204 | POSTING_READ(GEN6_BLITTER_ECOSKPD); | |
205 | gen6_gt_force_wake_put(dev_priv); | |
206 | } | |
207 | ||
1fa61106 | 208 | static void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
85208be0 ED |
209 | { |
210 | struct drm_device *dev = crtc->dev; | |
211 | struct drm_i915_private *dev_priv = dev->dev_private; | |
212 | struct drm_framebuffer *fb = crtc->fb; | |
213 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
214 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
215 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
216 | int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB; | |
217 | unsigned long stall_watermark = 200; | |
218 | u32 dpfc_ctl; | |
219 | ||
220 | dpfc_ctl = I915_READ(ILK_DPFC_CONTROL); | |
221 | dpfc_ctl &= DPFC_RESERVED; | |
222 | dpfc_ctl |= (plane | DPFC_CTL_LIMIT_1X); | |
223 | /* Set persistent mode for front-buffer rendering, ala X. */ | |
224 | dpfc_ctl |= DPFC_CTL_PERSISTENT_MODE; | |
d629336b VS |
225 | dpfc_ctl |= DPFC_CTL_FENCE_EN; |
226 | if (IS_GEN5(dev)) | |
227 | dpfc_ctl |= obj->fence_reg; | |
85208be0 ED |
228 | I915_WRITE(ILK_DPFC_CHICKEN, DPFC_HT_MODIFY); |
229 | ||
230 | I915_WRITE(ILK_DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN | | |
231 | (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) | | |
232 | (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT)); | |
233 | I915_WRITE(ILK_DPFC_FENCE_YOFF, crtc->y); | |
f343c5f6 | 234 | I915_WRITE(ILK_FBC_RT_BASE, i915_gem_obj_ggtt_offset(obj) | ILK_FBC_RT_VALID); |
85208be0 ED |
235 | /* enable it... */ |
236 | I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl | DPFC_CTL_EN); | |
237 | ||
238 | if (IS_GEN6(dev)) { | |
239 | I915_WRITE(SNB_DPFC_CTL_SA, | |
240 | SNB_CPU_FENCE_ENABLE | obj->fence_reg); | |
241 | I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y); | |
242 | sandybridge_blit_fbc_update(dev); | |
243 | } | |
244 | ||
84f44ce7 | 245 | DRM_DEBUG_KMS("enabled fbc on plane %c\n", plane_name(intel_crtc->plane)); |
85208be0 ED |
246 | } |
247 | ||
1fa61106 | 248 | static void ironlake_disable_fbc(struct drm_device *dev) |
85208be0 ED |
249 | { |
250 | struct drm_i915_private *dev_priv = dev->dev_private; | |
251 | u32 dpfc_ctl; | |
252 | ||
253 | /* Disable compression */ | |
254 | dpfc_ctl = I915_READ(ILK_DPFC_CONTROL); | |
255 | if (dpfc_ctl & DPFC_CTL_EN) { | |
256 | dpfc_ctl &= ~DPFC_CTL_EN; | |
257 | I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl); | |
258 | ||
259 | DRM_DEBUG_KMS("disabled FBC\n"); | |
260 | } | |
261 | } | |
262 | ||
1fa61106 | 263 | static bool ironlake_fbc_enabled(struct drm_device *dev) |
85208be0 ED |
264 | { |
265 | struct drm_i915_private *dev_priv = dev->dev_private; | |
266 | ||
267 | return I915_READ(ILK_DPFC_CONTROL) & DPFC_CTL_EN; | |
268 | } | |
269 | ||
abe959c7 RV |
270 | static void gen7_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
271 | { | |
272 | struct drm_device *dev = crtc->dev; | |
273 | struct drm_i915_private *dev_priv = dev->dev_private; | |
274 | struct drm_framebuffer *fb = crtc->fb; | |
275 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
276 | struct drm_i915_gem_object *obj = intel_fb->obj; | |
277 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
278 | ||
f343c5f6 | 279 | I915_WRITE(IVB_FBC_RT_BASE, i915_gem_obj_ggtt_offset(obj)); |
abe959c7 RV |
280 | |
281 | I915_WRITE(ILK_DPFC_CONTROL, DPFC_CTL_EN | DPFC_CTL_LIMIT_1X | | |
282 | IVB_DPFC_CTL_FENCE_EN | | |
283 | intel_crtc->plane << IVB_DPFC_CTL_PLANE_SHIFT); | |
284 | ||
891348b2 | 285 | if (IS_IVYBRIDGE(dev)) { |
7dd23ba0 | 286 | /* WaFbcAsynchFlipDisableFbcQueue:ivb */ |
891348b2 | 287 | I915_WRITE(ILK_DISPLAY_CHICKEN1, ILK_FBCQ_DIS); |
28554164 | 288 | } else { |
7dd23ba0 | 289 | /* WaFbcAsynchFlipDisableFbcQueue:hsw */ |
28554164 RV |
290 | I915_WRITE(HSW_PIPE_SLICE_CHICKEN_1(intel_crtc->pipe), |
291 | HSW_BYPASS_FBC_QUEUE); | |
891348b2 | 292 | } |
b74ea102 | 293 | |
abe959c7 RV |
294 | I915_WRITE(SNB_DPFC_CTL_SA, |
295 | SNB_CPU_FENCE_ENABLE | obj->fence_reg); | |
296 | I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y); | |
297 | ||
298 | sandybridge_blit_fbc_update(dev); | |
299 | ||
b19870ee | 300 | DRM_DEBUG_KMS("enabled fbc on plane %c\n", plane_name(intel_crtc->plane)); |
abe959c7 RV |
301 | } |
302 | ||
85208be0 ED |
303 | bool intel_fbc_enabled(struct drm_device *dev) |
304 | { | |
305 | struct drm_i915_private *dev_priv = dev->dev_private; | |
306 | ||
307 | if (!dev_priv->display.fbc_enabled) | |
308 | return false; | |
309 | ||
310 | return dev_priv->display.fbc_enabled(dev); | |
311 | } | |
312 | ||
313 | static void intel_fbc_work_fn(struct work_struct *__work) | |
314 | { | |
315 | struct intel_fbc_work *work = | |
316 | container_of(to_delayed_work(__work), | |
317 | struct intel_fbc_work, work); | |
318 | struct drm_device *dev = work->crtc->dev; | |
319 | struct drm_i915_private *dev_priv = dev->dev_private; | |
320 | ||
321 | mutex_lock(&dev->struct_mutex); | |
5c3fe8b0 | 322 | if (work == dev_priv->fbc.fbc_work) { |
85208be0 ED |
323 | /* Double check that we haven't switched fb without cancelling |
324 | * the prior work. | |
325 | */ | |
326 | if (work->crtc->fb == work->fb) { | |
327 | dev_priv->display.enable_fbc(work->crtc, | |
328 | work->interval); | |
329 | ||
5c3fe8b0 BW |
330 | dev_priv->fbc.plane = to_intel_crtc(work->crtc)->plane; |
331 | dev_priv->fbc.fb_id = work->crtc->fb->base.id; | |
332 | dev_priv->fbc.y = work->crtc->y; | |
85208be0 ED |
333 | } |
334 | ||
5c3fe8b0 | 335 | dev_priv->fbc.fbc_work = NULL; |
85208be0 ED |
336 | } |
337 | mutex_unlock(&dev->struct_mutex); | |
338 | ||
339 | kfree(work); | |
340 | } | |
341 | ||
342 | static void intel_cancel_fbc_work(struct drm_i915_private *dev_priv) | |
343 | { | |
5c3fe8b0 | 344 | if (dev_priv->fbc.fbc_work == NULL) |
85208be0 ED |
345 | return; |
346 | ||
347 | DRM_DEBUG_KMS("cancelling pending FBC enable\n"); | |
348 | ||
349 | /* Synchronisation is provided by struct_mutex and checking of | |
5c3fe8b0 | 350 | * dev_priv->fbc.fbc_work, so we can perform the cancellation |
85208be0 ED |
351 | * entirely asynchronously. |
352 | */ | |
5c3fe8b0 | 353 | if (cancel_delayed_work(&dev_priv->fbc.fbc_work->work)) |
85208be0 | 354 | /* tasklet was killed before being run, clean up */ |
5c3fe8b0 | 355 | kfree(dev_priv->fbc.fbc_work); |
85208be0 ED |
356 | |
357 | /* Mark the work as no longer wanted so that if it does | |
358 | * wake-up (because the work was already running and waiting | |
359 | * for our mutex), it will discover that is no longer | |
360 | * necessary to run. | |
361 | */ | |
5c3fe8b0 | 362 | dev_priv->fbc.fbc_work = NULL; |
85208be0 ED |
363 | } |
364 | ||
b63fb44c | 365 | static void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
85208be0 ED |
366 | { |
367 | struct intel_fbc_work *work; | |
368 | struct drm_device *dev = crtc->dev; | |
369 | struct drm_i915_private *dev_priv = dev->dev_private; | |
370 | ||
371 | if (!dev_priv->display.enable_fbc) | |
372 | return; | |
373 | ||
374 | intel_cancel_fbc_work(dev_priv); | |
375 | ||
b14c5679 | 376 | work = kzalloc(sizeof(*work), GFP_KERNEL); |
85208be0 | 377 | if (work == NULL) { |
6cdcb5e7 | 378 | DRM_ERROR("Failed to allocate FBC work structure\n"); |
85208be0 ED |
379 | dev_priv->display.enable_fbc(crtc, interval); |
380 | return; | |
381 | } | |
382 | ||
383 | work->crtc = crtc; | |
384 | work->fb = crtc->fb; | |
385 | work->interval = interval; | |
386 | INIT_DELAYED_WORK(&work->work, intel_fbc_work_fn); | |
387 | ||
5c3fe8b0 | 388 | dev_priv->fbc.fbc_work = work; |
85208be0 | 389 | |
85208be0 ED |
390 | /* Delay the actual enabling to let pageflipping cease and the |
391 | * display to settle before starting the compression. Note that | |
392 | * this delay also serves a second purpose: it allows for a | |
393 | * vblank to pass after disabling the FBC before we attempt | |
394 | * to modify the control registers. | |
395 | * | |
396 | * A more complicated solution would involve tracking vblanks | |
397 | * following the termination of the page-flipping sequence | |
398 | * and indeed performing the enable as a co-routine and not | |
399 | * waiting synchronously upon the vblank. | |
7457d617 DL |
400 | * |
401 | * WaFbcWaitForVBlankBeforeEnable:ilk,snb | |
85208be0 ED |
402 | */ |
403 | schedule_delayed_work(&work->work, msecs_to_jiffies(50)); | |
404 | } | |
405 | ||
406 | void intel_disable_fbc(struct drm_device *dev) | |
407 | { | |
408 | struct drm_i915_private *dev_priv = dev->dev_private; | |
409 | ||
410 | intel_cancel_fbc_work(dev_priv); | |
411 | ||
412 | if (!dev_priv->display.disable_fbc) | |
413 | return; | |
414 | ||
415 | dev_priv->display.disable_fbc(dev); | |
5c3fe8b0 | 416 | dev_priv->fbc.plane = -1; |
85208be0 ED |
417 | } |
418 | ||
29ebf90f CW |
419 | static bool set_no_fbc_reason(struct drm_i915_private *dev_priv, |
420 | enum no_fbc_reason reason) | |
421 | { | |
422 | if (dev_priv->fbc.no_fbc_reason == reason) | |
423 | return false; | |
424 | ||
425 | dev_priv->fbc.no_fbc_reason = reason; | |
426 | return true; | |
427 | } | |
428 | ||
85208be0 ED |
429 | /** |
430 | * intel_update_fbc - enable/disable FBC as needed | |
431 | * @dev: the drm_device | |
432 | * | |
433 | * Set up the framebuffer compression hardware at mode set time. We | |
434 | * enable it if possible: | |
435 | * - plane A only (on pre-965) | |
436 | * - no pixel mulitply/line duplication | |
437 | * - no alpha buffer discard | |
438 | * - no dual wide | |
f85da868 | 439 | * - framebuffer <= max_hdisplay in width, max_vdisplay in height |
85208be0 ED |
440 | * |
441 | * We can't assume that any compression will take place (worst case), | |
442 | * so the compressed buffer has to be the same size as the uncompressed | |
443 | * one. It also must reside (along with the line length buffer) in | |
444 | * stolen memory. | |
445 | * | |
446 | * We need to enable/disable FBC on a global basis. | |
447 | */ | |
448 | void intel_update_fbc(struct drm_device *dev) | |
449 | { | |
450 | struct drm_i915_private *dev_priv = dev->dev_private; | |
451 | struct drm_crtc *crtc = NULL, *tmp_crtc; | |
452 | struct intel_crtc *intel_crtc; | |
453 | struct drm_framebuffer *fb; | |
454 | struct intel_framebuffer *intel_fb; | |
455 | struct drm_i915_gem_object *obj; | |
ef644fda | 456 | const struct drm_display_mode *adjusted_mode; |
37327abd | 457 | unsigned int max_width, max_height; |
85208be0 | 458 | |
29ebf90f CW |
459 | if (!I915_HAS_FBC(dev)) { |
460 | set_no_fbc_reason(dev_priv, FBC_UNSUPPORTED); | |
85208be0 | 461 | return; |
29ebf90f | 462 | } |
85208be0 | 463 | |
29ebf90f CW |
464 | if (!i915_powersave) { |
465 | if (set_no_fbc_reason(dev_priv, FBC_MODULE_PARAM)) | |
466 | DRM_DEBUG_KMS("fbc disabled per module param\n"); | |
85208be0 | 467 | return; |
29ebf90f | 468 | } |
85208be0 ED |
469 | |
470 | /* | |
471 | * If FBC is already on, we just have to verify that we can | |
472 | * keep it that way... | |
473 | * Need to disable if: | |
474 | * - more than one pipe is active | |
475 | * - changing FBC params (stride, fence, mode) | |
476 | * - new fb is too large to fit in compressed buffer | |
477 | * - going to an unsupported config (interlace, pixel multiply, etc.) | |
478 | */ | |
479 | list_for_each_entry(tmp_crtc, &dev->mode_config.crtc_list, head) { | |
3490ea5d | 480 | if (intel_crtc_active(tmp_crtc) && |
4c445e0e | 481 | to_intel_crtc(tmp_crtc)->primary_enabled) { |
85208be0 | 482 | if (crtc) { |
29ebf90f CW |
483 | if (set_no_fbc_reason(dev_priv, FBC_MULTIPLE_PIPES)) |
484 | DRM_DEBUG_KMS("more than one pipe active, disabling compression\n"); | |
85208be0 ED |
485 | goto out_disable; |
486 | } | |
487 | crtc = tmp_crtc; | |
488 | } | |
489 | } | |
490 | ||
491 | if (!crtc || crtc->fb == NULL) { | |
29ebf90f CW |
492 | if (set_no_fbc_reason(dev_priv, FBC_NO_OUTPUT)) |
493 | DRM_DEBUG_KMS("no output, disabling\n"); | |
85208be0 ED |
494 | goto out_disable; |
495 | } | |
496 | ||
497 | intel_crtc = to_intel_crtc(crtc); | |
498 | fb = crtc->fb; | |
499 | intel_fb = to_intel_framebuffer(fb); | |
500 | obj = intel_fb->obj; | |
ef644fda | 501 | adjusted_mode = &intel_crtc->config.adjusted_mode; |
85208be0 | 502 | |
8a5729a3 DL |
503 | if (i915_enable_fbc < 0 && |
504 | INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev)) { | |
29ebf90f CW |
505 | if (set_no_fbc_reason(dev_priv, FBC_CHIP_DEFAULT)) |
506 | DRM_DEBUG_KMS("disabled per chip default\n"); | |
8a5729a3 | 507 | goto out_disable; |
85208be0 | 508 | } |
8a5729a3 | 509 | if (!i915_enable_fbc) { |
29ebf90f CW |
510 | if (set_no_fbc_reason(dev_priv, FBC_MODULE_PARAM)) |
511 | DRM_DEBUG_KMS("fbc disabled per module param\n"); | |
85208be0 ED |
512 | goto out_disable; |
513 | } | |
ef644fda VS |
514 | if ((adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) || |
515 | (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)) { | |
29ebf90f CW |
516 | if (set_no_fbc_reason(dev_priv, FBC_UNSUPPORTED_MODE)) |
517 | DRM_DEBUG_KMS("mode incompatible with compression, " | |
518 | "disabling\n"); | |
85208be0 ED |
519 | goto out_disable; |
520 | } | |
f85da868 PZ |
521 | |
522 | if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { | |
37327abd VS |
523 | max_width = 4096; |
524 | max_height = 2048; | |
f85da868 | 525 | } else { |
37327abd VS |
526 | max_width = 2048; |
527 | max_height = 1536; | |
f85da868 | 528 | } |
37327abd VS |
529 | if (intel_crtc->config.pipe_src_w > max_width || |
530 | intel_crtc->config.pipe_src_h > max_height) { | |
29ebf90f CW |
531 | if (set_no_fbc_reason(dev_priv, FBC_MODE_TOO_LARGE)) |
532 | DRM_DEBUG_KMS("mode too large for compression, disabling\n"); | |
85208be0 ED |
533 | goto out_disable; |
534 | } | |
891348b2 RV |
535 | if ((IS_I915GM(dev) || IS_I945GM(dev) || IS_HASWELL(dev)) && |
536 | intel_crtc->plane != 0) { | |
29ebf90f CW |
537 | if (set_no_fbc_reason(dev_priv, FBC_BAD_PLANE)) |
538 | DRM_DEBUG_KMS("plane not 0, disabling compression\n"); | |
85208be0 ED |
539 | goto out_disable; |
540 | } | |
541 | ||
542 | /* The use of a CPU fence is mandatory in order to detect writes | |
543 | * by the CPU to the scanout and trigger updates to the FBC. | |
544 | */ | |
545 | if (obj->tiling_mode != I915_TILING_X || | |
546 | obj->fence_reg == I915_FENCE_REG_NONE) { | |
29ebf90f CW |
547 | if (set_no_fbc_reason(dev_priv, FBC_NOT_TILED)) |
548 | DRM_DEBUG_KMS("framebuffer not tiled or fenced, disabling compression\n"); | |
85208be0 ED |
549 | goto out_disable; |
550 | } | |
551 | ||
552 | /* If the kernel debugger is active, always disable compression */ | |
553 | if (in_dbg_master()) | |
554 | goto out_disable; | |
555 | ||
11be49eb | 556 | if (i915_gem_stolen_setup_compression(dev, intel_fb->obj->base.size)) { |
29ebf90f CW |
557 | if (set_no_fbc_reason(dev_priv, FBC_STOLEN_TOO_SMALL)) |
558 | DRM_DEBUG_KMS("framebuffer too large, disabling compression\n"); | |
11be49eb CW |
559 | goto out_disable; |
560 | } | |
561 | ||
85208be0 ED |
562 | /* If the scanout has not changed, don't modify the FBC settings. |
563 | * Note that we make the fundamental assumption that the fb->obj | |
564 | * cannot be unpinned (and have its GTT offset and fence revoked) | |
565 | * without first being decoupled from the scanout and FBC disabled. | |
566 | */ | |
5c3fe8b0 BW |
567 | if (dev_priv->fbc.plane == intel_crtc->plane && |
568 | dev_priv->fbc.fb_id == fb->base.id && | |
569 | dev_priv->fbc.y == crtc->y) | |
85208be0 ED |
570 | return; |
571 | ||
572 | if (intel_fbc_enabled(dev)) { | |
573 | /* We update FBC along two paths, after changing fb/crtc | |
574 | * configuration (modeswitching) and after page-flipping | |
575 | * finishes. For the latter, we know that not only did | |
576 | * we disable the FBC at the start of the page-flip | |
577 | * sequence, but also more than one vblank has passed. | |
578 | * | |
579 | * For the former case of modeswitching, it is possible | |
580 | * to switch between two FBC valid configurations | |
581 | * instantaneously so we do need to disable the FBC | |
582 | * before we can modify its control registers. We also | |
583 | * have to wait for the next vblank for that to take | |
584 | * effect. However, since we delay enabling FBC we can | |
585 | * assume that a vblank has passed since disabling and | |
586 | * that we can safely alter the registers in the deferred | |
587 | * callback. | |
588 | * | |
589 | * In the scenario that we go from a valid to invalid | |
590 | * and then back to valid FBC configuration we have | |
591 | * no strict enforcement that a vblank occurred since | |
592 | * disabling the FBC. However, along all current pipe | |
593 | * disabling paths we do need to wait for a vblank at | |
594 | * some point. And we wait before enabling FBC anyway. | |
595 | */ | |
596 | DRM_DEBUG_KMS("disabling active FBC for update\n"); | |
597 | intel_disable_fbc(dev); | |
598 | } | |
599 | ||
600 | intel_enable_fbc(crtc, 500); | |
29ebf90f | 601 | dev_priv->fbc.no_fbc_reason = FBC_OK; |
85208be0 ED |
602 | return; |
603 | ||
604 | out_disable: | |
605 | /* Multiple disables should be harmless */ | |
606 | if (intel_fbc_enabled(dev)) { | |
607 | DRM_DEBUG_KMS("unsupported config, disabling FBC\n"); | |
608 | intel_disable_fbc(dev); | |
609 | } | |
11be49eb | 610 | i915_gem_stolen_cleanup_compression(dev); |
85208be0 ED |
611 | } |
612 | ||
c921aba8 DV |
613 | static void i915_pineview_get_mem_freq(struct drm_device *dev) |
614 | { | |
615 | drm_i915_private_t *dev_priv = dev->dev_private; | |
616 | u32 tmp; | |
617 | ||
618 | tmp = I915_READ(CLKCFG); | |
619 | ||
620 | switch (tmp & CLKCFG_FSB_MASK) { | |
621 | case CLKCFG_FSB_533: | |
622 | dev_priv->fsb_freq = 533; /* 133*4 */ | |
623 | break; | |
624 | case CLKCFG_FSB_800: | |
625 | dev_priv->fsb_freq = 800; /* 200*4 */ | |
626 | break; | |
627 | case CLKCFG_FSB_667: | |
628 | dev_priv->fsb_freq = 667; /* 167*4 */ | |
629 | break; | |
630 | case CLKCFG_FSB_400: | |
631 | dev_priv->fsb_freq = 400; /* 100*4 */ | |
632 | break; | |
633 | } | |
634 | ||
635 | switch (tmp & CLKCFG_MEM_MASK) { | |
636 | case CLKCFG_MEM_533: | |
637 | dev_priv->mem_freq = 533; | |
638 | break; | |
639 | case CLKCFG_MEM_667: | |
640 | dev_priv->mem_freq = 667; | |
641 | break; | |
642 | case CLKCFG_MEM_800: | |
643 | dev_priv->mem_freq = 800; | |
644 | break; | |
645 | } | |
646 | ||
647 | /* detect pineview DDR3 setting */ | |
648 | tmp = I915_READ(CSHRDDR3CTL); | |
649 | dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0; | |
650 | } | |
651 | ||
652 | static void i915_ironlake_get_mem_freq(struct drm_device *dev) | |
653 | { | |
654 | drm_i915_private_t *dev_priv = dev->dev_private; | |
655 | u16 ddrpll, csipll; | |
656 | ||
657 | ddrpll = I915_READ16(DDRMPLL1); | |
658 | csipll = I915_READ16(CSIPLL0); | |
659 | ||
660 | switch (ddrpll & 0xff) { | |
661 | case 0xc: | |
662 | dev_priv->mem_freq = 800; | |
663 | break; | |
664 | case 0x10: | |
665 | dev_priv->mem_freq = 1066; | |
666 | break; | |
667 | case 0x14: | |
668 | dev_priv->mem_freq = 1333; | |
669 | break; | |
670 | case 0x18: | |
671 | dev_priv->mem_freq = 1600; | |
672 | break; | |
673 | default: | |
674 | DRM_DEBUG_DRIVER("unknown memory frequency 0x%02x\n", | |
675 | ddrpll & 0xff); | |
676 | dev_priv->mem_freq = 0; | |
677 | break; | |
678 | } | |
679 | ||
20e4d407 | 680 | dev_priv->ips.r_t = dev_priv->mem_freq; |
c921aba8 DV |
681 | |
682 | switch (csipll & 0x3ff) { | |
683 | case 0x00c: | |
684 | dev_priv->fsb_freq = 3200; | |
685 | break; | |
686 | case 0x00e: | |
687 | dev_priv->fsb_freq = 3733; | |
688 | break; | |
689 | case 0x010: | |
690 | dev_priv->fsb_freq = 4266; | |
691 | break; | |
692 | case 0x012: | |
693 | dev_priv->fsb_freq = 4800; | |
694 | break; | |
695 | case 0x014: | |
696 | dev_priv->fsb_freq = 5333; | |
697 | break; | |
698 | case 0x016: | |
699 | dev_priv->fsb_freq = 5866; | |
700 | break; | |
701 | case 0x018: | |
702 | dev_priv->fsb_freq = 6400; | |
703 | break; | |
704 | default: | |
705 | DRM_DEBUG_DRIVER("unknown fsb frequency 0x%04x\n", | |
706 | csipll & 0x3ff); | |
707 | dev_priv->fsb_freq = 0; | |
708 | break; | |
709 | } | |
710 | ||
711 | if (dev_priv->fsb_freq == 3200) { | |
20e4d407 | 712 | dev_priv->ips.c_m = 0; |
c921aba8 | 713 | } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) { |
20e4d407 | 714 | dev_priv->ips.c_m = 1; |
c921aba8 | 715 | } else { |
20e4d407 | 716 | dev_priv->ips.c_m = 2; |
c921aba8 DV |
717 | } |
718 | } | |
719 | ||
b445e3b0 ED |
720 | static const struct cxsr_latency cxsr_latency_table[] = { |
721 | {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */ | |
722 | {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */ | |
723 | {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */ | |
724 | {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */ | |
725 | {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */ | |
726 | ||
727 | {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */ | |
728 | {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */ | |
729 | {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */ | |
730 | {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */ | |
731 | {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */ | |
732 | ||
733 | {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */ | |
734 | {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */ | |
735 | {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */ | |
736 | {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */ | |
737 | {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */ | |
738 | ||
739 | {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */ | |
740 | {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */ | |
741 | {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */ | |
742 | {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */ | |
743 | {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */ | |
744 | ||
745 | {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */ | |
746 | {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */ | |
747 | {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */ | |
748 | {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */ | |
749 | {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */ | |
750 | ||
751 | {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */ | |
752 | {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */ | |
753 | {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */ | |
754 | {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */ | |
755 | {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */ | |
756 | }; | |
757 | ||
63c62275 | 758 | static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, |
b445e3b0 ED |
759 | int is_ddr3, |
760 | int fsb, | |
761 | int mem) | |
762 | { | |
763 | const struct cxsr_latency *latency; | |
764 | int i; | |
765 | ||
766 | if (fsb == 0 || mem == 0) | |
767 | return NULL; | |
768 | ||
769 | for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) { | |
770 | latency = &cxsr_latency_table[i]; | |
771 | if (is_desktop == latency->is_desktop && | |
772 | is_ddr3 == latency->is_ddr3 && | |
773 | fsb == latency->fsb_freq && mem == latency->mem_freq) | |
774 | return latency; | |
775 | } | |
776 | ||
777 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
778 | ||
779 | return NULL; | |
780 | } | |
781 | ||
1fa61106 | 782 | static void pineview_disable_cxsr(struct drm_device *dev) |
b445e3b0 ED |
783 | { |
784 | struct drm_i915_private *dev_priv = dev->dev_private; | |
785 | ||
786 | /* deactivate cxsr */ | |
787 | I915_WRITE(DSPFW3, I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN); | |
788 | } | |
789 | ||
790 | /* | |
791 | * Latency for FIFO fetches is dependent on several factors: | |
792 | * - memory configuration (speed, channels) | |
793 | * - chipset | |
794 | * - current MCH state | |
795 | * It can be fairly high in some situations, so here we assume a fairly | |
796 | * pessimal value. It's a tradeoff between extra memory fetches (if we | |
797 | * set this value too high, the FIFO will fetch frequently to stay full) | |
798 | * and power consumption (set it too low to save power and we might see | |
799 | * FIFO underruns and display "flicker"). | |
800 | * | |
801 | * A value of 5us seems to be a good balance; safe for very low end | |
802 | * platforms but not overly aggressive on lower latency configs. | |
803 | */ | |
804 | static const int latency_ns = 5000; | |
805 | ||
1fa61106 | 806 | static int i9xx_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
807 | { |
808 | struct drm_i915_private *dev_priv = dev->dev_private; | |
809 | uint32_t dsparb = I915_READ(DSPARB); | |
810 | int size; | |
811 | ||
812 | size = dsparb & 0x7f; | |
813 | if (plane) | |
814 | size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size; | |
815 | ||
816 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
817 | plane ? "B" : "A", size); | |
818 | ||
819 | return size; | |
820 | } | |
821 | ||
1fa61106 | 822 | static int i85x_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
823 | { |
824 | struct drm_i915_private *dev_priv = dev->dev_private; | |
825 | uint32_t dsparb = I915_READ(DSPARB); | |
826 | int size; | |
827 | ||
828 | size = dsparb & 0x1ff; | |
829 | if (plane) | |
830 | size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size; | |
831 | size >>= 1; /* Convert to cachelines */ | |
832 | ||
833 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
834 | plane ? "B" : "A", size); | |
835 | ||
836 | return size; | |
837 | } | |
838 | ||
1fa61106 | 839 | static int i845_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
840 | { |
841 | struct drm_i915_private *dev_priv = dev->dev_private; | |
842 | uint32_t dsparb = I915_READ(DSPARB); | |
843 | int size; | |
844 | ||
845 | size = dsparb & 0x7f; | |
846 | size >>= 2; /* Convert to cachelines */ | |
847 | ||
848 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
849 | plane ? "B" : "A", | |
850 | size); | |
851 | ||
852 | return size; | |
853 | } | |
854 | ||
1fa61106 | 855 | static int i830_get_fifo_size(struct drm_device *dev, int plane) |
b445e3b0 ED |
856 | { |
857 | struct drm_i915_private *dev_priv = dev->dev_private; | |
858 | uint32_t dsparb = I915_READ(DSPARB); | |
859 | int size; | |
860 | ||
861 | size = dsparb & 0x7f; | |
862 | size >>= 1; /* Convert to cachelines */ | |
863 | ||
864 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, | |
865 | plane ? "B" : "A", size); | |
866 | ||
867 | return size; | |
868 | } | |
869 | ||
870 | /* Pineview has different values for various configs */ | |
871 | static const struct intel_watermark_params pineview_display_wm = { | |
872 | PINEVIEW_DISPLAY_FIFO, | |
873 | PINEVIEW_MAX_WM, | |
874 | PINEVIEW_DFT_WM, | |
875 | PINEVIEW_GUARD_WM, | |
876 | PINEVIEW_FIFO_LINE_SIZE | |
877 | }; | |
878 | static const struct intel_watermark_params pineview_display_hplloff_wm = { | |
879 | PINEVIEW_DISPLAY_FIFO, | |
880 | PINEVIEW_MAX_WM, | |
881 | PINEVIEW_DFT_HPLLOFF_WM, | |
882 | PINEVIEW_GUARD_WM, | |
883 | PINEVIEW_FIFO_LINE_SIZE | |
884 | }; | |
885 | static const struct intel_watermark_params pineview_cursor_wm = { | |
886 | PINEVIEW_CURSOR_FIFO, | |
887 | PINEVIEW_CURSOR_MAX_WM, | |
888 | PINEVIEW_CURSOR_DFT_WM, | |
889 | PINEVIEW_CURSOR_GUARD_WM, | |
890 | PINEVIEW_FIFO_LINE_SIZE, | |
891 | }; | |
892 | static const struct intel_watermark_params pineview_cursor_hplloff_wm = { | |
893 | PINEVIEW_CURSOR_FIFO, | |
894 | PINEVIEW_CURSOR_MAX_WM, | |
895 | PINEVIEW_CURSOR_DFT_WM, | |
896 | PINEVIEW_CURSOR_GUARD_WM, | |
897 | PINEVIEW_FIFO_LINE_SIZE | |
898 | }; | |
899 | static const struct intel_watermark_params g4x_wm_info = { | |
900 | G4X_FIFO_SIZE, | |
901 | G4X_MAX_WM, | |
902 | G4X_MAX_WM, | |
903 | 2, | |
904 | G4X_FIFO_LINE_SIZE, | |
905 | }; | |
906 | static const struct intel_watermark_params g4x_cursor_wm_info = { | |
907 | I965_CURSOR_FIFO, | |
908 | I965_CURSOR_MAX_WM, | |
909 | I965_CURSOR_DFT_WM, | |
910 | 2, | |
911 | G4X_FIFO_LINE_SIZE, | |
912 | }; | |
913 | static const struct intel_watermark_params valleyview_wm_info = { | |
914 | VALLEYVIEW_FIFO_SIZE, | |
915 | VALLEYVIEW_MAX_WM, | |
916 | VALLEYVIEW_MAX_WM, | |
917 | 2, | |
918 | G4X_FIFO_LINE_SIZE, | |
919 | }; | |
920 | static const struct intel_watermark_params valleyview_cursor_wm_info = { | |
921 | I965_CURSOR_FIFO, | |
922 | VALLEYVIEW_CURSOR_MAX_WM, | |
923 | I965_CURSOR_DFT_WM, | |
924 | 2, | |
925 | G4X_FIFO_LINE_SIZE, | |
926 | }; | |
927 | static const struct intel_watermark_params i965_cursor_wm_info = { | |
928 | I965_CURSOR_FIFO, | |
929 | I965_CURSOR_MAX_WM, | |
930 | I965_CURSOR_DFT_WM, | |
931 | 2, | |
932 | I915_FIFO_LINE_SIZE, | |
933 | }; | |
934 | static const struct intel_watermark_params i945_wm_info = { | |
935 | I945_FIFO_SIZE, | |
936 | I915_MAX_WM, | |
937 | 1, | |
938 | 2, | |
939 | I915_FIFO_LINE_SIZE | |
940 | }; | |
941 | static const struct intel_watermark_params i915_wm_info = { | |
942 | I915_FIFO_SIZE, | |
943 | I915_MAX_WM, | |
944 | 1, | |
945 | 2, | |
946 | I915_FIFO_LINE_SIZE | |
947 | }; | |
948 | static const struct intel_watermark_params i855_wm_info = { | |
949 | I855GM_FIFO_SIZE, | |
950 | I915_MAX_WM, | |
951 | 1, | |
952 | 2, | |
953 | I830_FIFO_LINE_SIZE | |
954 | }; | |
955 | static const struct intel_watermark_params i830_wm_info = { | |
956 | I830_FIFO_SIZE, | |
957 | I915_MAX_WM, | |
958 | 1, | |
959 | 2, | |
960 | I830_FIFO_LINE_SIZE | |
961 | }; | |
962 | ||
963 | static const struct intel_watermark_params ironlake_display_wm_info = { | |
964 | ILK_DISPLAY_FIFO, | |
965 | ILK_DISPLAY_MAXWM, | |
966 | ILK_DISPLAY_DFTWM, | |
967 | 2, | |
968 | ILK_FIFO_LINE_SIZE | |
969 | }; | |
970 | static const struct intel_watermark_params ironlake_cursor_wm_info = { | |
971 | ILK_CURSOR_FIFO, | |
972 | ILK_CURSOR_MAXWM, | |
973 | ILK_CURSOR_DFTWM, | |
974 | 2, | |
975 | ILK_FIFO_LINE_SIZE | |
976 | }; | |
977 | static const struct intel_watermark_params ironlake_display_srwm_info = { | |
978 | ILK_DISPLAY_SR_FIFO, | |
979 | ILK_DISPLAY_MAX_SRWM, | |
980 | ILK_DISPLAY_DFT_SRWM, | |
981 | 2, | |
982 | ILK_FIFO_LINE_SIZE | |
983 | }; | |
984 | static const struct intel_watermark_params ironlake_cursor_srwm_info = { | |
985 | ILK_CURSOR_SR_FIFO, | |
986 | ILK_CURSOR_MAX_SRWM, | |
987 | ILK_CURSOR_DFT_SRWM, | |
988 | 2, | |
989 | ILK_FIFO_LINE_SIZE | |
990 | }; | |
991 | ||
992 | static const struct intel_watermark_params sandybridge_display_wm_info = { | |
993 | SNB_DISPLAY_FIFO, | |
994 | SNB_DISPLAY_MAXWM, | |
995 | SNB_DISPLAY_DFTWM, | |
996 | 2, | |
997 | SNB_FIFO_LINE_SIZE | |
998 | }; | |
999 | static const struct intel_watermark_params sandybridge_cursor_wm_info = { | |
1000 | SNB_CURSOR_FIFO, | |
1001 | SNB_CURSOR_MAXWM, | |
1002 | SNB_CURSOR_DFTWM, | |
1003 | 2, | |
1004 | SNB_FIFO_LINE_SIZE | |
1005 | }; | |
1006 | static const struct intel_watermark_params sandybridge_display_srwm_info = { | |
1007 | SNB_DISPLAY_SR_FIFO, | |
1008 | SNB_DISPLAY_MAX_SRWM, | |
1009 | SNB_DISPLAY_DFT_SRWM, | |
1010 | 2, | |
1011 | SNB_FIFO_LINE_SIZE | |
1012 | }; | |
1013 | static const struct intel_watermark_params sandybridge_cursor_srwm_info = { | |
1014 | SNB_CURSOR_SR_FIFO, | |
1015 | SNB_CURSOR_MAX_SRWM, | |
1016 | SNB_CURSOR_DFT_SRWM, | |
1017 | 2, | |
1018 | SNB_FIFO_LINE_SIZE | |
1019 | }; | |
1020 | ||
1021 | ||
1022 | /** | |
1023 | * intel_calculate_wm - calculate watermark level | |
1024 | * @clock_in_khz: pixel clock | |
1025 | * @wm: chip FIFO params | |
1026 | * @pixel_size: display pixel size | |
1027 | * @latency_ns: memory latency for the platform | |
1028 | * | |
1029 | * Calculate the watermark level (the level at which the display plane will | |
1030 | * start fetching from memory again). Each chip has a different display | |
1031 | * FIFO size and allocation, so the caller needs to figure that out and pass | |
1032 | * in the correct intel_watermark_params structure. | |
1033 | * | |
1034 | * As the pixel clock runs, the FIFO will be drained at a rate that depends | |
1035 | * on the pixel size. When it reaches the watermark level, it'll start | |
1036 | * fetching FIFO line sized based chunks from memory until the FIFO fills | |
1037 | * past the watermark point. If the FIFO drains completely, a FIFO underrun | |
1038 | * will occur, and a display engine hang could result. | |
1039 | */ | |
1040 | static unsigned long intel_calculate_wm(unsigned long clock_in_khz, | |
1041 | const struct intel_watermark_params *wm, | |
1042 | int fifo_size, | |
1043 | int pixel_size, | |
1044 | unsigned long latency_ns) | |
1045 | { | |
1046 | long entries_required, wm_size; | |
1047 | ||
1048 | /* | |
1049 | * Note: we need to make sure we don't overflow for various clock & | |
1050 | * latency values. | |
1051 | * clocks go from a few thousand to several hundred thousand. | |
1052 | * latency is usually a few thousand | |
1053 | */ | |
1054 | entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) / | |
1055 | 1000; | |
1056 | entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size); | |
1057 | ||
1058 | DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required); | |
1059 | ||
1060 | wm_size = fifo_size - (entries_required + wm->guard_size); | |
1061 | ||
1062 | DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size); | |
1063 | ||
1064 | /* Don't promote wm_size to unsigned... */ | |
1065 | if (wm_size > (long)wm->max_wm) | |
1066 | wm_size = wm->max_wm; | |
1067 | if (wm_size <= 0) | |
1068 | wm_size = wm->default_wm; | |
1069 | return wm_size; | |
1070 | } | |
1071 | ||
1072 | static struct drm_crtc *single_enabled_crtc(struct drm_device *dev) | |
1073 | { | |
1074 | struct drm_crtc *crtc, *enabled = NULL; | |
1075 | ||
1076 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
3490ea5d | 1077 | if (intel_crtc_active(crtc)) { |
b445e3b0 ED |
1078 | if (enabled) |
1079 | return NULL; | |
1080 | enabled = crtc; | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | return enabled; | |
1085 | } | |
1086 | ||
46ba614c | 1087 | static void pineview_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1088 | { |
46ba614c | 1089 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1090 | struct drm_i915_private *dev_priv = dev->dev_private; |
1091 | struct drm_crtc *crtc; | |
1092 | const struct cxsr_latency *latency; | |
1093 | u32 reg; | |
1094 | unsigned long wm; | |
1095 | ||
1096 | latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3, | |
1097 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
1098 | if (!latency) { | |
1099 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); | |
1100 | pineview_disable_cxsr(dev); | |
1101 | return; | |
1102 | } | |
1103 | ||
1104 | crtc = single_enabled_crtc(dev); | |
1105 | if (crtc) { | |
241bfc38 | 1106 | const struct drm_display_mode *adjusted_mode; |
b445e3b0 | 1107 | int pixel_size = crtc->fb->bits_per_pixel / 8; |
241bfc38 DL |
1108 | int clock; |
1109 | ||
1110 | adjusted_mode = &to_intel_crtc(crtc)->config.adjusted_mode; | |
1111 | clock = adjusted_mode->crtc_clock; | |
b445e3b0 ED |
1112 | |
1113 | /* Display SR */ | |
1114 | wm = intel_calculate_wm(clock, &pineview_display_wm, | |
1115 | pineview_display_wm.fifo_size, | |
1116 | pixel_size, latency->display_sr); | |
1117 | reg = I915_READ(DSPFW1); | |
1118 | reg &= ~DSPFW_SR_MASK; | |
1119 | reg |= wm << DSPFW_SR_SHIFT; | |
1120 | I915_WRITE(DSPFW1, reg); | |
1121 | DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg); | |
1122 | ||
1123 | /* cursor SR */ | |
1124 | wm = intel_calculate_wm(clock, &pineview_cursor_wm, | |
1125 | pineview_display_wm.fifo_size, | |
1126 | pixel_size, latency->cursor_sr); | |
1127 | reg = I915_READ(DSPFW3); | |
1128 | reg &= ~DSPFW_CURSOR_SR_MASK; | |
1129 | reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT; | |
1130 | I915_WRITE(DSPFW3, reg); | |
1131 | ||
1132 | /* Display HPLL off SR */ | |
1133 | wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm, | |
1134 | pineview_display_hplloff_wm.fifo_size, | |
1135 | pixel_size, latency->display_hpll_disable); | |
1136 | reg = I915_READ(DSPFW3); | |
1137 | reg &= ~DSPFW_HPLL_SR_MASK; | |
1138 | reg |= wm & DSPFW_HPLL_SR_MASK; | |
1139 | I915_WRITE(DSPFW3, reg); | |
1140 | ||
1141 | /* cursor HPLL off SR */ | |
1142 | wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm, | |
1143 | pineview_display_hplloff_wm.fifo_size, | |
1144 | pixel_size, latency->cursor_hpll_disable); | |
1145 | reg = I915_READ(DSPFW3); | |
1146 | reg &= ~DSPFW_HPLL_CURSOR_MASK; | |
1147 | reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT; | |
1148 | I915_WRITE(DSPFW3, reg); | |
1149 | DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg); | |
1150 | ||
1151 | /* activate cxsr */ | |
1152 | I915_WRITE(DSPFW3, | |
1153 | I915_READ(DSPFW3) | PINEVIEW_SELF_REFRESH_EN); | |
1154 | DRM_DEBUG_KMS("Self-refresh is enabled\n"); | |
1155 | } else { | |
1156 | pineview_disable_cxsr(dev); | |
1157 | DRM_DEBUG_KMS("Self-refresh is disabled\n"); | |
1158 | } | |
1159 | } | |
1160 | ||
1161 | static bool g4x_compute_wm0(struct drm_device *dev, | |
1162 | int plane, | |
1163 | const struct intel_watermark_params *display, | |
1164 | int display_latency_ns, | |
1165 | const struct intel_watermark_params *cursor, | |
1166 | int cursor_latency_ns, | |
1167 | int *plane_wm, | |
1168 | int *cursor_wm) | |
1169 | { | |
1170 | struct drm_crtc *crtc; | |
4fe8590a | 1171 | const struct drm_display_mode *adjusted_mode; |
b445e3b0 ED |
1172 | int htotal, hdisplay, clock, pixel_size; |
1173 | int line_time_us, line_count; | |
1174 | int entries, tlb_miss; | |
1175 | ||
1176 | crtc = intel_get_crtc_for_plane(dev, plane); | |
3490ea5d | 1177 | if (!intel_crtc_active(crtc)) { |
b445e3b0 ED |
1178 | *cursor_wm = cursor->guard_size; |
1179 | *plane_wm = display->guard_size; | |
1180 | return false; | |
1181 | } | |
1182 | ||
4fe8590a | 1183 | adjusted_mode = &to_intel_crtc(crtc)->config.adjusted_mode; |
241bfc38 | 1184 | clock = adjusted_mode->crtc_clock; |
4fe8590a | 1185 | htotal = adjusted_mode->htotal; |
37327abd | 1186 | hdisplay = to_intel_crtc(crtc)->config.pipe_src_w; |
b445e3b0 ED |
1187 | pixel_size = crtc->fb->bits_per_pixel / 8; |
1188 | ||
1189 | /* Use the small buffer method to calculate plane watermark */ | |
1190 | entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000; | |
1191 | tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8; | |
1192 | if (tlb_miss > 0) | |
1193 | entries += tlb_miss; | |
1194 | entries = DIV_ROUND_UP(entries, display->cacheline_size); | |
1195 | *plane_wm = entries + display->guard_size; | |
1196 | if (*plane_wm > (int)display->max_wm) | |
1197 | *plane_wm = display->max_wm; | |
1198 | ||
1199 | /* Use the large buffer method to calculate cursor watermark */ | |
1200 | line_time_us = ((htotal * 1000) / clock); | |
1201 | line_count = (cursor_latency_ns / line_time_us + 1000) / 1000; | |
1202 | entries = line_count * 64 * pixel_size; | |
1203 | tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8; | |
1204 | if (tlb_miss > 0) | |
1205 | entries += tlb_miss; | |
1206 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); | |
1207 | *cursor_wm = entries + cursor->guard_size; | |
1208 | if (*cursor_wm > (int)cursor->max_wm) | |
1209 | *cursor_wm = (int)cursor->max_wm; | |
1210 | ||
1211 | return true; | |
1212 | } | |
1213 | ||
1214 | /* | |
1215 | * Check the wm result. | |
1216 | * | |
1217 | * If any calculated watermark values is larger than the maximum value that | |
1218 | * can be programmed into the associated watermark register, that watermark | |
1219 | * must be disabled. | |
1220 | */ | |
1221 | static bool g4x_check_srwm(struct drm_device *dev, | |
1222 | int display_wm, int cursor_wm, | |
1223 | const struct intel_watermark_params *display, | |
1224 | const struct intel_watermark_params *cursor) | |
1225 | { | |
1226 | DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n", | |
1227 | display_wm, cursor_wm); | |
1228 | ||
1229 | if (display_wm > display->max_wm) { | |
1230 | DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n", | |
1231 | display_wm, display->max_wm); | |
1232 | return false; | |
1233 | } | |
1234 | ||
1235 | if (cursor_wm > cursor->max_wm) { | |
1236 | DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n", | |
1237 | cursor_wm, cursor->max_wm); | |
1238 | return false; | |
1239 | } | |
1240 | ||
1241 | if (!(display_wm || cursor_wm)) { | |
1242 | DRM_DEBUG_KMS("SR latency is 0, disabling\n"); | |
1243 | return false; | |
1244 | } | |
1245 | ||
1246 | return true; | |
1247 | } | |
1248 | ||
1249 | static bool g4x_compute_srwm(struct drm_device *dev, | |
1250 | int plane, | |
1251 | int latency_ns, | |
1252 | const struct intel_watermark_params *display, | |
1253 | const struct intel_watermark_params *cursor, | |
1254 | int *display_wm, int *cursor_wm) | |
1255 | { | |
1256 | struct drm_crtc *crtc; | |
4fe8590a | 1257 | const struct drm_display_mode *adjusted_mode; |
b445e3b0 ED |
1258 | int hdisplay, htotal, pixel_size, clock; |
1259 | unsigned long line_time_us; | |
1260 | int line_count, line_size; | |
1261 | int small, large; | |
1262 | int entries; | |
1263 | ||
1264 | if (!latency_ns) { | |
1265 | *display_wm = *cursor_wm = 0; | |
1266 | return false; | |
1267 | } | |
1268 | ||
1269 | crtc = intel_get_crtc_for_plane(dev, plane); | |
4fe8590a | 1270 | adjusted_mode = &to_intel_crtc(crtc)->config.adjusted_mode; |
241bfc38 | 1271 | clock = adjusted_mode->crtc_clock; |
4fe8590a | 1272 | htotal = adjusted_mode->htotal; |
37327abd | 1273 | hdisplay = to_intel_crtc(crtc)->config.pipe_src_w; |
b445e3b0 ED |
1274 | pixel_size = crtc->fb->bits_per_pixel / 8; |
1275 | ||
1276 | line_time_us = (htotal * 1000) / clock; | |
1277 | line_count = (latency_ns / line_time_us + 1000) / 1000; | |
1278 | line_size = hdisplay * pixel_size; | |
1279 | ||
1280 | /* Use the minimum of the small and large buffer method for primary */ | |
1281 | small = ((clock * pixel_size / 1000) * latency_ns) / 1000; | |
1282 | large = line_count * line_size; | |
1283 | ||
1284 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); | |
1285 | *display_wm = entries + display->guard_size; | |
1286 | ||
1287 | /* calculate the self-refresh watermark for display cursor */ | |
1288 | entries = line_count * pixel_size * 64; | |
1289 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); | |
1290 | *cursor_wm = entries + cursor->guard_size; | |
1291 | ||
1292 | return g4x_check_srwm(dev, | |
1293 | *display_wm, *cursor_wm, | |
1294 | display, cursor); | |
1295 | } | |
1296 | ||
1297 | static bool vlv_compute_drain_latency(struct drm_device *dev, | |
1298 | int plane, | |
1299 | int *plane_prec_mult, | |
1300 | int *plane_dl, | |
1301 | int *cursor_prec_mult, | |
1302 | int *cursor_dl) | |
1303 | { | |
1304 | struct drm_crtc *crtc; | |
1305 | int clock, pixel_size; | |
1306 | int entries; | |
1307 | ||
1308 | crtc = intel_get_crtc_for_plane(dev, plane); | |
3490ea5d | 1309 | if (!intel_crtc_active(crtc)) |
b445e3b0 ED |
1310 | return false; |
1311 | ||
241bfc38 | 1312 | clock = to_intel_crtc(crtc)->config.adjusted_mode.crtc_clock; |
b445e3b0 ED |
1313 | pixel_size = crtc->fb->bits_per_pixel / 8; /* BPP */ |
1314 | ||
1315 | entries = (clock / 1000) * pixel_size; | |
1316 | *plane_prec_mult = (entries > 256) ? | |
1317 | DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16; | |
1318 | *plane_dl = (64 * (*plane_prec_mult) * 4) / ((clock / 1000) * | |
1319 | pixel_size); | |
1320 | ||
1321 | entries = (clock / 1000) * 4; /* BPP is always 4 for cursor */ | |
1322 | *cursor_prec_mult = (entries > 256) ? | |
1323 | DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16; | |
1324 | *cursor_dl = (64 * (*cursor_prec_mult) * 4) / ((clock / 1000) * 4); | |
1325 | ||
1326 | return true; | |
1327 | } | |
1328 | ||
1329 | /* | |
1330 | * Update drain latency registers of memory arbiter | |
1331 | * | |
1332 | * Valleyview SoC has a new memory arbiter and needs drain latency registers | |
1333 | * to be programmed. Each plane has a drain latency multiplier and a drain | |
1334 | * latency value. | |
1335 | */ | |
1336 | ||
1337 | static void vlv_update_drain_latency(struct drm_device *dev) | |
1338 | { | |
1339 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1340 | int planea_prec, planea_dl, planeb_prec, planeb_dl; | |
1341 | int cursora_prec, cursora_dl, cursorb_prec, cursorb_dl; | |
1342 | int plane_prec_mult, cursor_prec_mult; /* Precision multiplier is | |
1343 | either 16 or 32 */ | |
1344 | ||
1345 | /* For plane A, Cursor A */ | |
1346 | if (vlv_compute_drain_latency(dev, 0, &plane_prec_mult, &planea_dl, | |
1347 | &cursor_prec_mult, &cursora_dl)) { | |
1348 | cursora_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ? | |
1349 | DDL_CURSORA_PRECISION_32 : DDL_CURSORA_PRECISION_16; | |
1350 | planea_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ? | |
1351 | DDL_PLANEA_PRECISION_32 : DDL_PLANEA_PRECISION_16; | |
1352 | ||
1353 | I915_WRITE(VLV_DDL1, cursora_prec | | |
1354 | (cursora_dl << DDL_CURSORA_SHIFT) | | |
1355 | planea_prec | planea_dl); | |
1356 | } | |
1357 | ||
1358 | /* For plane B, Cursor B */ | |
1359 | if (vlv_compute_drain_latency(dev, 1, &plane_prec_mult, &planeb_dl, | |
1360 | &cursor_prec_mult, &cursorb_dl)) { | |
1361 | cursorb_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ? | |
1362 | DDL_CURSORB_PRECISION_32 : DDL_CURSORB_PRECISION_16; | |
1363 | planeb_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ? | |
1364 | DDL_PLANEB_PRECISION_32 : DDL_PLANEB_PRECISION_16; | |
1365 | ||
1366 | I915_WRITE(VLV_DDL2, cursorb_prec | | |
1367 | (cursorb_dl << DDL_CURSORB_SHIFT) | | |
1368 | planeb_prec | planeb_dl); | |
1369 | } | |
1370 | } | |
1371 | ||
1372 | #define single_plane_enabled(mask) is_power_of_2(mask) | |
1373 | ||
46ba614c | 1374 | static void valleyview_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1375 | { |
46ba614c | 1376 | struct drm_device *dev = crtc->dev; |
b445e3b0 ED |
1377 | static const int sr_latency_ns = 12000; |
1378 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1379 | int planea_wm, planeb_wm, cursora_wm, cursorb_wm; | |
1380 | int plane_sr, cursor_sr; | |
af6c4575 | 1381 | int ignore_plane_sr, ignore_cursor_sr; |
b445e3b0 ED |
1382 | unsigned int enabled = 0; |
1383 | ||
1384 | vlv_update_drain_latency(dev); | |
1385 | ||
51cea1f4 | 1386 | if (g4x_compute_wm0(dev, PIPE_A, |
b445e3b0 ED |
1387 | &valleyview_wm_info, latency_ns, |
1388 | &valleyview_cursor_wm_info, latency_ns, | |
1389 | &planea_wm, &cursora_wm)) | |
51cea1f4 | 1390 | enabled |= 1 << PIPE_A; |
b445e3b0 | 1391 | |
51cea1f4 | 1392 | if (g4x_compute_wm0(dev, PIPE_B, |
b445e3b0 ED |
1393 | &valleyview_wm_info, latency_ns, |
1394 | &valleyview_cursor_wm_info, latency_ns, | |
1395 | &planeb_wm, &cursorb_wm)) | |
51cea1f4 | 1396 | enabled |= 1 << PIPE_B; |
b445e3b0 | 1397 | |
b445e3b0 ED |
1398 | if (single_plane_enabled(enabled) && |
1399 | g4x_compute_srwm(dev, ffs(enabled) - 1, | |
1400 | sr_latency_ns, | |
1401 | &valleyview_wm_info, | |
1402 | &valleyview_cursor_wm_info, | |
af6c4575 CW |
1403 | &plane_sr, &ignore_cursor_sr) && |
1404 | g4x_compute_srwm(dev, ffs(enabled) - 1, | |
1405 | 2*sr_latency_ns, | |
1406 | &valleyview_wm_info, | |
1407 | &valleyview_cursor_wm_info, | |
52bd02d8 | 1408 | &ignore_plane_sr, &cursor_sr)) { |
b445e3b0 | 1409 | I915_WRITE(FW_BLC_SELF_VLV, FW_CSPWRDWNEN); |
52bd02d8 | 1410 | } else { |
b445e3b0 ED |
1411 | I915_WRITE(FW_BLC_SELF_VLV, |
1412 | I915_READ(FW_BLC_SELF_VLV) & ~FW_CSPWRDWNEN); | |
52bd02d8 CW |
1413 | plane_sr = cursor_sr = 0; |
1414 | } | |
b445e3b0 ED |
1415 | |
1416 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n", | |
1417 | planea_wm, cursora_wm, | |
1418 | planeb_wm, cursorb_wm, | |
1419 | plane_sr, cursor_sr); | |
1420 | ||
1421 | I915_WRITE(DSPFW1, | |
1422 | (plane_sr << DSPFW_SR_SHIFT) | | |
1423 | (cursorb_wm << DSPFW_CURSORB_SHIFT) | | |
1424 | (planeb_wm << DSPFW_PLANEB_SHIFT) | | |
1425 | planea_wm); | |
1426 | I915_WRITE(DSPFW2, | |
8c919b28 | 1427 | (I915_READ(DSPFW2) & ~DSPFW_CURSORA_MASK) | |
b445e3b0 ED |
1428 | (cursora_wm << DSPFW_CURSORA_SHIFT)); |
1429 | I915_WRITE(DSPFW3, | |
8c919b28 CW |
1430 | (I915_READ(DSPFW3) & ~DSPFW_CURSOR_SR_MASK) | |
1431 | (cursor_sr << DSPFW_CURSOR_SR_SHIFT)); | |
b445e3b0 ED |
1432 | } |
1433 | ||
46ba614c | 1434 | static void g4x_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1435 | { |
46ba614c | 1436 | struct drm_device *dev = crtc->dev; |
b445e3b0 ED |
1437 | static const int sr_latency_ns = 12000; |
1438 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1439 | int planea_wm, planeb_wm, cursora_wm, cursorb_wm; | |
1440 | int plane_sr, cursor_sr; | |
1441 | unsigned int enabled = 0; | |
1442 | ||
51cea1f4 | 1443 | if (g4x_compute_wm0(dev, PIPE_A, |
b445e3b0 ED |
1444 | &g4x_wm_info, latency_ns, |
1445 | &g4x_cursor_wm_info, latency_ns, | |
1446 | &planea_wm, &cursora_wm)) | |
51cea1f4 | 1447 | enabled |= 1 << PIPE_A; |
b445e3b0 | 1448 | |
51cea1f4 | 1449 | if (g4x_compute_wm0(dev, PIPE_B, |
b445e3b0 ED |
1450 | &g4x_wm_info, latency_ns, |
1451 | &g4x_cursor_wm_info, latency_ns, | |
1452 | &planeb_wm, &cursorb_wm)) | |
51cea1f4 | 1453 | enabled |= 1 << PIPE_B; |
b445e3b0 | 1454 | |
b445e3b0 ED |
1455 | if (single_plane_enabled(enabled) && |
1456 | g4x_compute_srwm(dev, ffs(enabled) - 1, | |
1457 | sr_latency_ns, | |
1458 | &g4x_wm_info, | |
1459 | &g4x_cursor_wm_info, | |
52bd02d8 | 1460 | &plane_sr, &cursor_sr)) { |
b445e3b0 | 1461 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN); |
52bd02d8 | 1462 | } else { |
b445e3b0 ED |
1463 | I915_WRITE(FW_BLC_SELF, |
1464 | I915_READ(FW_BLC_SELF) & ~FW_BLC_SELF_EN); | |
52bd02d8 CW |
1465 | plane_sr = cursor_sr = 0; |
1466 | } | |
b445e3b0 ED |
1467 | |
1468 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n", | |
1469 | planea_wm, cursora_wm, | |
1470 | planeb_wm, cursorb_wm, | |
1471 | plane_sr, cursor_sr); | |
1472 | ||
1473 | I915_WRITE(DSPFW1, | |
1474 | (plane_sr << DSPFW_SR_SHIFT) | | |
1475 | (cursorb_wm << DSPFW_CURSORB_SHIFT) | | |
1476 | (planeb_wm << DSPFW_PLANEB_SHIFT) | | |
1477 | planea_wm); | |
1478 | I915_WRITE(DSPFW2, | |
8c919b28 | 1479 | (I915_READ(DSPFW2) & ~DSPFW_CURSORA_MASK) | |
b445e3b0 ED |
1480 | (cursora_wm << DSPFW_CURSORA_SHIFT)); |
1481 | /* HPLL off in SR has some issues on G4x... disable it */ | |
1482 | I915_WRITE(DSPFW3, | |
8c919b28 | 1483 | (I915_READ(DSPFW3) & ~(DSPFW_HPLL_SR_EN | DSPFW_CURSOR_SR_MASK)) | |
b445e3b0 ED |
1484 | (cursor_sr << DSPFW_CURSOR_SR_SHIFT)); |
1485 | } | |
1486 | ||
46ba614c | 1487 | static void i965_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1488 | { |
46ba614c | 1489 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1490 | struct drm_i915_private *dev_priv = dev->dev_private; |
1491 | struct drm_crtc *crtc; | |
1492 | int srwm = 1; | |
1493 | int cursor_sr = 16; | |
1494 | ||
1495 | /* Calc sr entries for one plane configs */ | |
1496 | crtc = single_enabled_crtc(dev); | |
1497 | if (crtc) { | |
1498 | /* self-refresh has much higher latency */ | |
1499 | static const int sr_latency_ns = 12000; | |
4fe8590a VS |
1500 | const struct drm_display_mode *adjusted_mode = |
1501 | &to_intel_crtc(crtc)->config.adjusted_mode; | |
241bfc38 | 1502 | int clock = adjusted_mode->crtc_clock; |
4fe8590a | 1503 | int htotal = adjusted_mode->htotal; |
37327abd | 1504 | int hdisplay = to_intel_crtc(crtc)->config.pipe_src_w; |
b445e3b0 ED |
1505 | int pixel_size = crtc->fb->bits_per_pixel / 8; |
1506 | unsigned long line_time_us; | |
1507 | int entries; | |
1508 | ||
1509 | line_time_us = ((htotal * 1000) / clock); | |
1510 | ||
1511 | /* Use ns/us then divide to preserve precision */ | |
1512 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
1513 | pixel_size * hdisplay; | |
1514 | entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE); | |
1515 | srwm = I965_FIFO_SIZE - entries; | |
1516 | if (srwm < 0) | |
1517 | srwm = 1; | |
1518 | srwm &= 0x1ff; | |
1519 | DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n", | |
1520 | entries, srwm); | |
1521 | ||
1522 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
1523 | pixel_size * 64; | |
1524 | entries = DIV_ROUND_UP(entries, | |
1525 | i965_cursor_wm_info.cacheline_size); | |
1526 | cursor_sr = i965_cursor_wm_info.fifo_size - | |
1527 | (entries + i965_cursor_wm_info.guard_size); | |
1528 | ||
1529 | if (cursor_sr > i965_cursor_wm_info.max_wm) | |
1530 | cursor_sr = i965_cursor_wm_info.max_wm; | |
1531 | ||
1532 | DRM_DEBUG_KMS("self-refresh watermark: display plane %d " | |
1533 | "cursor %d\n", srwm, cursor_sr); | |
1534 | ||
1535 | if (IS_CRESTLINE(dev)) | |
1536 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN); | |
1537 | } else { | |
1538 | /* Turn off self refresh if both pipes are enabled */ | |
1539 | if (IS_CRESTLINE(dev)) | |
1540 | I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF) | |
1541 | & ~FW_BLC_SELF_EN); | |
1542 | } | |
1543 | ||
1544 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n", | |
1545 | srwm); | |
1546 | ||
1547 | /* 965 has limitations... */ | |
1548 | I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) | | |
1549 | (8 << 16) | (8 << 8) | (8 << 0)); | |
1550 | I915_WRITE(DSPFW2, (8 << 8) | (8 << 0)); | |
1551 | /* update cursor SR watermark */ | |
1552 | I915_WRITE(DSPFW3, (cursor_sr << DSPFW_CURSOR_SR_SHIFT)); | |
1553 | } | |
1554 | ||
46ba614c | 1555 | static void i9xx_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1556 | { |
46ba614c | 1557 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1558 | struct drm_i915_private *dev_priv = dev->dev_private; |
1559 | const struct intel_watermark_params *wm_info; | |
1560 | uint32_t fwater_lo; | |
1561 | uint32_t fwater_hi; | |
1562 | int cwm, srwm = 1; | |
1563 | int fifo_size; | |
1564 | int planea_wm, planeb_wm; | |
1565 | struct drm_crtc *crtc, *enabled = NULL; | |
1566 | ||
1567 | if (IS_I945GM(dev)) | |
1568 | wm_info = &i945_wm_info; | |
1569 | else if (!IS_GEN2(dev)) | |
1570 | wm_info = &i915_wm_info; | |
1571 | else | |
1572 | wm_info = &i855_wm_info; | |
1573 | ||
1574 | fifo_size = dev_priv->display.get_fifo_size(dev, 0); | |
1575 | crtc = intel_get_crtc_for_plane(dev, 0); | |
3490ea5d | 1576 | if (intel_crtc_active(crtc)) { |
241bfc38 | 1577 | const struct drm_display_mode *adjusted_mode; |
b9e0bda3 CW |
1578 | int cpp = crtc->fb->bits_per_pixel / 8; |
1579 | if (IS_GEN2(dev)) | |
1580 | cpp = 4; | |
1581 | ||
241bfc38 DL |
1582 | adjusted_mode = &to_intel_crtc(crtc)->config.adjusted_mode; |
1583 | planea_wm = intel_calculate_wm(adjusted_mode->crtc_clock, | |
b9e0bda3 | 1584 | wm_info, fifo_size, cpp, |
b445e3b0 ED |
1585 | latency_ns); |
1586 | enabled = crtc; | |
1587 | } else | |
1588 | planea_wm = fifo_size - wm_info->guard_size; | |
1589 | ||
1590 | fifo_size = dev_priv->display.get_fifo_size(dev, 1); | |
1591 | crtc = intel_get_crtc_for_plane(dev, 1); | |
3490ea5d | 1592 | if (intel_crtc_active(crtc)) { |
241bfc38 | 1593 | const struct drm_display_mode *adjusted_mode; |
b9e0bda3 CW |
1594 | int cpp = crtc->fb->bits_per_pixel / 8; |
1595 | if (IS_GEN2(dev)) | |
1596 | cpp = 4; | |
1597 | ||
241bfc38 DL |
1598 | adjusted_mode = &to_intel_crtc(crtc)->config.adjusted_mode; |
1599 | planeb_wm = intel_calculate_wm(adjusted_mode->crtc_clock, | |
b9e0bda3 | 1600 | wm_info, fifo_size, cpp, |
b445e3b0 ED |
1601 | latency_ns); |
1602 | if (enabled == NULL) | |
1603 | enabled = crtc; | |
1604 | else | |
1605 | enabled = NULL; | |
1606 | } else | |
1607 | planeb_wm = fifo_size - wm_info->guard_size; | |
1608 | ||
1609 | DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm); | |
1610 | ||
1611 | /* | |
1612 | * Overlay gets an aggressive default since video jitter is bad. | |
1613 | */ | |
1614 | cwm = 2; | |
1615 | ||
1616 | /* Play safe and disable self-refresh before adjusting watermarks. */ | |
1617 | if (IS_I945G(dev) || IS_I945GM(dev)) | |
1618 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | 0); | |
1619 | else if (IS_I915GM(dev)) | |
1620 | I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN); | |
1621 | ||
1622 | /* Calc sr entries for one plane configs */ | |
1623 | if (HAS_FW_BLC(dev) && enabled) { | |
1624 | /* self-refresh has much higher latency */ | |
1625 | static const int sr_latency_ns = 6000; | |
4fe8590a VS |
1626 | const struct drm_display_mode *adjusted_mode = |
1627 | &to_intel_crtc(enabled)->config.adjusted_mode; | |
241bfc38 | 1628 | int clock = adjusted_mode->crtc_clock; |
4fe8590a | 1629 | int htotal = adjusted_mode->htotal; |
37327abd | 1630 | int hdisplay = to_intel_crtc(crtc)->config.pipe_src_w; |
b445e3b0 ED |
1631 | int pixel_size = enabled->fb->bits_per_pixel / 8; |
1632 | unsigned long line_time_us; | |
1633 | int entries; | |
1634 | ||
1635 | line_time_us = (htotal * 1000) / clock; | |
1636 | ||
1637 | /* Use ns/us then divide to preserve precision */ | |
1638 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * | |
1639 | pixel_size * hdisplay; | |
1640 | entries = DIV_ROUND_UP(entries, wm_info->cacheline_size); | |
1641 | DRM_DEBUG_KMS("self-refresh entries: %d\n", entries); | |
1642 | srwm = wm_info->fifo_size - entries; | |
1643 | if (srwm < 0) | |
1644 | srwm = 1; | |
1645 | ||
1646 | if (IS_I945G(dev) || IS_I945GM(dev)) | |
1647 | I915_WRITE(FW_BLC_SELF, | |
1648 | FW_BLC_SELF_FIFO_MASK | (srwm & 0xff)); | |
1649 | else if (IS_I915GM(dev)) | |
1650 | I915_WRITE(FW_BLC_SELF, srwm & 0x3f); | |
1651 | } | |
1652 | ||
1653 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n", | |
1654 | planea_wm, planeb_wm, cwm, srwm); | |
1655 | ||
1656 | fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f); | |
1657 | fwater_hi = (cwm & 0x1f); | |
1658 | ||
1659 | /* Set request length to 8 cachelines per fetch */ | |
1660 | fwater_lo = fwater_lo | (1 << 24) | (1 << 8); | |
1661 | fwater_hi = fwater_hi | (1 << 8); | |
1662 | ||
1663 | I915_WRITE(FW_BLC, fwater_lo); | |
1664 | I915_WRITE(FW_BLC2, fwater_hi); | |
1665 | ||
1666 | if (HAS_FW_BLC(dev)) { | |
1667 | if (enabled) { | |
1668 | if (IS_I945G(dev) || IS_I945GM(dev)) | |
1669 | I915_WRITE(FW_BLC_SELF, | |
1670 | FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN); | |
1671 | else if (IS_I915GM(dev)) | |
1672 | I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN); | |
1673 | DRM_DEBUG_KMS("memory self refresh enabled\n"); | |
1674 | } else | |
1675 | DRM_DEBUG_KMS("memory self refresh disabled\n"); | |
1676 | } | |
1677 | } | |
1678 | ||
46ba614c | 1679 | static void i830_update_wm(struct drm_crtc *unused_crtc) |
b445e3b0 | 1680 | { |
46ba614c | 1681 | struct drm_device *dev = unused_crtc->dev; |
b445e3b0 ED |
1682 | struct drm_i915_private *dev_priv = dev->dev_private; |
1683 | struct drm_crtc *crtc; | |
241bfc38 | 1684 | const struct drm_display_mode *adjusted_mode; |
b445e3b0 ED |
1685 | uint32_t fwater_lo; |
1686 | int planea_wm; | |
1687 | ||
1688 | crtc = single_enabled_crtc(dev); | |
1689 | if (crtc == NULL) | |
1690 | return; | |
1691 | ||
241bfc38 DL |
1692 | adjusted_mode = &to_intel_crtc(crtc)->config.adjusted_mode; |
1693 | planea_wm = intel_calculate_wm(adjusted_mode->crtc_clock, | |
4fe8590a | 1694 | &i830_wm_info, |
b445e3b0 | 1695 | dev_priv->display.get_fifo_size(dev, 0), |
b9e0bda3 | 1696 | 4, latency_ns); |
b445e3b0 ED |
1697 | fwater_lo = I915_READ(FW_BLC) & ~0xfff; |
1698 | fwater_lo |= (3<<8) | planea_wm; | |
1699 | ||
1700 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm); | |
1701 | ||
1702 | I915_WRITE(FW_BLC, fwater_lo); | |
1703 | } | |
1704 | ||
b445e3b0 ED |
1705 | /* |
1706 | * Check the wm result. | |
1707 | * | |
1708 | * If any calculated watermark values is larger than the maximum value that | |
1709 | * can be programmed into the associated watermark register, that watermark | |
1710 | * must be disabled. | |
1711 | */ | |
1712 | static bool ironlake_check_srwm(struct drm_device *dev, int level, | |
1713 | int fbc_wm, int display_wm, int cursor_wm, | |
1714 | const struct intel_watermark_params *display, | |
1715 | const struct intel_watermark_params *cursor) | |
1716 | { | |
1717 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1718 | ||
1719 | DRM_DEBUG_KMS("watermark %d: display plane %d, fbc lines %d," | |
1720 | " cursor %d\n", level, display_wm, fbc_wm, cursor_wm); | |
1721 | ||
1722 | if (fbc_wm > SNB_FBC_MAX_SRWM) { | |
1723 | DRM_DEBUG_KMS("fbc watermark(%d) is too large(%d), disabling wm%d+\n", | |
1724 | fbc_wm, SNB_FBC_MAX_SRWM, level); | |
1725 | ||
1726 | /* fbc has it's own way to disable FBC WM */ | |
1727 | I915_WRITE(DISP_ARB_CTL, | |
1728 | I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS); | |
1729 | return false; | |
615aaa5f VS |
1730 | } else if (INTEL_INFO(dev)->gen >= 6) { |
1731 | /* enable FBC WM (except on ILK, where it must remain off) */ | |
1732 | I915_WRITE(DISP_ARB_CTL, | |
1733 | I915_READ(DISP_ARB_CTL) & ~DISP_FBC_WM_DIS); | |
b445e3b0 ED |
1734 | } |
1735 | ||
1736 | if (display_wm > display->max_wm) { | |
1737 | DRM_DEBUG_KMS("display watermark(%d) is too large(%d), disabling wm%d+\n", | |
1738 | display_wm, SNB_DISPLAY_MAX_SRWM, level); | |
1739 | return false; | |
1740 | } | |
1741 | ||
1742 | if (cursor_wm > cursor->max_wm) { | |
1743 | DRM_DEBUG_KMS("cursor watermark(%d) is too large(%d), disabling wm%d+\n", | |
1744 | cursor_wm, SNB_CURSOR_MAX_SRWM, level); | |
1745 | return false; | |
1746 | } | |
1747 | ||
1748 | if (!(fbc_wm || display_wm || cursor_wm)) { | |
1749 | DRM_DEBUG_KMS("latency %d is 0, disabling wm%d+\n", level, level); | |
1750 | return false; | |
1751 | } | |
1752 | ||
1753 | return true; | |
1754 | } | |
1755 | ||
1756 | /* | |
1757 | * Compute watermark values of WM[1-3], | |
1758 | */ | |
1759 | static bool ironlake_compute_srwm(struct drm_device *dev, int level, int plane, | |
1760 | int latency_ns, | |
1761 | const struct intel_watermark_params *display, | |
1762 | const struct intel_watermark_params *cursor, | |
1763 | int *fbc_wm, int *display_wm, int *cursor_wm) | |
1764 | { | |
1765 | struct drm_crtc *crtc; | |
4fe8590a | 1766 | const struct drm_display_mode *adjusted_mode; |
b445e3b0 ED |
1767 | unsigned long line_time_us; |
1768 | int hdisplay, htotal, pixel_size, clock; | |
1769 | int line_count, line_size; | |
1770 | int small, large; | |
1771 | int entries; | |
1772 | ||
1773 | if (!latency_ns) { | |
1774 | *fbc_wm = *display_wm = *cursor_wm = 0; | |
1775 | return false; | |
1776 | } | |
1777 | ||
1778 | crtc = intel_get_crtc_for_plane(dev, plane); | |
4fe8590a | 1779 | adjusted_mode = &to_intel_crtc(crtc)->config.adjusted_mode; |
241bfc38 | 1780 | clock = adjusted_mode->crtc_clock; |
4fe8590a | 1781 | htotal = adjusted_mode->htotal; |
37327abd | 1782 | hdisplay = to_intel_crtc(crtc)->config.pipe_src_w; |
b445e3b0 ED |
1783 | pixel_size = crtc->fb->bits_per_pixel / 8; |
1784 | ||
1785 | line_time_us = (htotal * 1000) / clock; | |
1786 | line_count = (latency_ns / line_time_us + 1000) / 1000; | |
1787 | line_size = hdisplay * pixel_size; | |
1788 | ||
1789 | /* Use the minimum of the small and large buffer method for primary */ | |
1790 | small = ((clock * pixel_size / 1000) * latency_ns) / 1000; | |
1791 | large = line_count * line_size; | |
1792 | ||
1793 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); | |
1794 | *display_wm = entries + display->guard_size; | |
1795 | ||
1796 | /* | |
1797 | * Spec says: | |
1798 | * FBC WM = ((Final Primary WM * 64) / number of bytes per line) + 2 | |
1799 | */ | |
1800 | *fbc_wm = DIV_ROUND_UP(*display_wm * 64, line_size) + 2; | |
1801 | ||
1802 | /* calculate the self-refresh watermark for display cursor */ | |
1803 | entries = line_count * pixel_size * 64; | |
1804 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); | |
1805 | *cursor_wm = entries + cursor->guard_size; | |
1806 | ||
1807 | return ironlake_check_srwm(dev, level, | |
1808 | *fbc_wm, *display_wm, *cursor_wm, | |
1809 | display, cursor); | |
1810 | } | |
1811 | ||
46ba614c | 1812 | static void ironlake_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1813 | { |
46ba614c | 1814 | struct drm_device *dev = crtc->dev; |
b445e3b0 ED |
1815 | struct drm_i915_private *dev_priv = dev->dev_private; |
1816 | int fbc_wm, plane_wm, cursor_wm; | |
1817 | unsigned int enabled; | |
1818 | ||
1819 | enabled = 0; | |
51cea1f4 | 1820 | if (g4x_compute_wm0(dev, PIPE_A, |
b445e3b0 | 1821 | &ironlake_display_wm_info, |
b0aea5dc | 1822 | dev_priv->wm.pri_latency[0] * 100, |
b445e3b0 | 1823 | &ironlake_cursor_wm_info, |
b0aea5dc | 1824 | dev_priv->wm.cur_latency[0] * 100, |
b445e3b0 ED |
1825 | &plane_wm, &cursor_wm)) { |
1826 | I915_WRITE(WM0_PIPEA_ILK, | |
1827 | (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm); | |
1828 | DRM_DEBUG_KMS("FIFO watermarks For pipe A -" | |
1829 | " plane %d, " "cursor: %d\n", | |
1830 | plane_wm, cursor_wm); | |
51cea1f4 | 1831 | enabled |= 1 << PIPE_A; |
b445e3b0 ED |
1832 | } |
1833 | ||
51cea1f4 | 1834 | if (g4x_compute_wm0(dev, PIPE_B, |
b445e3b0 | 1835 | &ironlake_display_wm_info, |
b0aea5dc | 1836 | dev_priv->wm.pri_latency[0] * 100, |
b445e3b0 | 1837 | &ironlake_cursor_wm_info, |
b0aea5dc | 1838 | dev_priv->wm.cur_latency[0] * 100, |
b445e3b0 ED |
1839 | &plane_wm, &cursor_wm)) { |
1840 | I915_WRITE(WM0_PIPEB_ILK, | |
1841 | (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm); | |
1842 | DRM_DEBUG_KMS("FIFO watermarks For pipe B -" | |
1843 | " plane %d, cursor: %d\n", | |
1844 | plane_wm, cursor_wm); | |
51cea1f4 | 1845 | enabled |= 1 << PIPE_B; |
b445e3b0 ED |
1846 | } |
1847 | ||
1848 | /* | |
1849 | * Calculate and update the self-refresh watermark only when one | |
1850 | * display plane is used. | |
1851 | */ | |
1852 | I915_WRITE(WM3_LP_ILK, 0); | |
1853 | I915_WRITE(WM2_LP_ILK, 0); | |
1854 | I915_WRITE(WM1_LP_ILK, 0); | |
1855 | ||
1856 | if (!single_plane_enabled(enabled)) | |
1857 | return; | |
1858 | enabled = ffs(enabled) - 1; | |
1859 | ||
1860 | /* WM1 */ | |
1861 | if (!ironlake_compute_srwm(dev, 1, enabled, | |
b0aea5dc | 1862 | dev_priv->wm.pri_latency[1] * 500, |
b445e3b0 ED |
1863 | &ironlake_display_srwm_info, |
1864 | &ironlake_cursor_srwm_info, | |
1865 | &fbc_wm, &plane_wm, &cursor_wm)) | |
1866 | return; | |
1867 | ||
1868 | I915_WRITE(WM1_LP_ILK, | |
1869 | WM1_LP_SR_EN | | |
b0aea5dc | 1870 | (dev_priv->wm.pri_latency[1] << WM1_LP_LATENCY_SHIFT) | |
b445e3b0 ED |
1871 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
1872 | (plane_wm << WM1_LP_SR_SHIFT) | | |
1873 | cursor_wm); | |
1874 | ||
1875 | /* WM2 */ | |
1876 | if (!ironlake_compute_srwm(dev, 2, enabled, | |
b0aea5dc | 1877 | dev_priv->wm.pri_latency[2] * 500, |
b445e3b0 ED |
1878 | &ironlake_display_srwm_info, |
1879 | &ironlake_cursor_srwm_info, | |
1880 | &fbc_wm, &plane_wm, &cursor_wm)) | |
1881 | return; | |
1882 | ||
1883 | I915_WRITE(WM2_LP_ILK, | |
1884 | WM2_LP_EN | | |
b0aea5dc | 1885 | (dev_priv->wm.pri_latency[2] << WM1_LP_LATENCY_SHIFT) | |
b445e3b0 ED |
1886 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
1887 | (plane_wm << WM1_LP_SR_SHIFT) | | |
1888 | cursor_wm); | |
1889 | ||
1890 | /* | |
1891 | * WM3 is unsupported on ILK, probably because we don't have latency | |
1892 | * data for that power state | |
1893 | */ | |
1894 | } | |
1895 | ||
46ba614c | 1896 | static void sandybridge_update_wm(struct drm_crtc *crtc) |
b445e3b0 | 1897 | { |
46ba614c | 1898 | struct drm_device *dev = crtc->dev; |
b445e3b0 | 1899 | struct drm_i915_private *dev_priv = dev->dev_private; |
b0aea5dc | 1900 | int latency = dev_priv->wm.pri_latency[0] * 100; /* In unit 0.1us */ |
b445e3b0 ED |
1901 | u32 val; |
1902 | int fbc_wm, plane_wm, cursor_wm; | |
1903 | unsigned int enabled; | |
1904 | ||
1905 | enabled = 0; | |
51cea1f4 | 1906 | if (g4x_compute_wm0(dev, PIPE_A, |
b445e3b0 ED |
1907 | &sandybridge_display_wm_info, latency, |
1908 | &sandybridge_cursor_wm_info, latency, | |
1909 | &plane_wm, &cursor_wm)) { | |
1910 | val = I915_READ(WM0_PIPEA_ILK); | |
1911 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); | |
1912 | I915_WRITE(WM0_PIPEA_ILK, val | | |
1913 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); | |
1914 | DRM_DEBUG_KMS("FIFO watermarks For pipe A -" | |
1915 | " plane %d, " "cursor: %d\n", | |
1916 | plane_wm, cursor_wm); | |
51cea1f4 | 1917 | enabled |= 1 << PIPE_A; |
b445e3b0 ED |
1918 | } |
1919 | ||
51cea1f4 | 1920 | if (g4x_compute_wm0(dev, PIPE_B, |
b445e3b0 ED |
1921 | &sandybridge_display_wm_info, latency, |
1922 | &sandybridge_cursor_wm_info, latency, | |
1923 | &plane_wm, &cursor_wm)) { | |
1924 | val = I915_READ(WM0_PIPEB_ILK); | |
1925 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); | |
1926 | I915_WRITE(WM0_PIPEB_ILK, val | | |
1927 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); | |
1928 | DRM_DEBUG_KMS("FIFO watermarks For pipe B -" | |
1929 | " plane %d, cursor: %d\n", | |
1930 | plane_wm, cursor_wm); | |
51cea1f4 | 1931 | enabled |= 1 << PIPE_B; |
b445e3b0 ED |
1932 | } |
1933 | ||
c43d0188 CW |
1934 | /* |
1935 | * Calculate and update the self-refresh watermark only when one | |
1936 | * display plane is used. | |
1937 | * | |
1938 | * SNB support 3 levels of watermark. | |
1939 | * | |
1940 | * WM1/WM2/WM2 watermarks have to be enabled in the ascending order, | |
1941 | * and disabled in the descending order | |
1942 | * | |
1943 | */ | |
1944 | I915_WRITE(WM3_LP_ILK, 0); | |
1945 | I915_WRITE(WM2_LP_ILK, 0); | |
1946 | I915_WRITE(WM1_LP_ILK, 0); | |
1947 | ||
1948 | if (!single_plane_enabled(enabled) || | |
1949 | dev_priv->sprite_scaling_enabled) | |
1950 | return; | |
1951 | enabled = ffs(enabled) - 1; | |
1952 | ||
1953 | /* WM1 */ | |
1954 | if (!ironlake_compute_srwm(dev, 1, enabled, | |
b0aea5dc | 1955 | dev_priv->wm.pri_latency[1] * 500, |
c43d0188 CW |
1956 | &sandybridge_display_srwm_info, |
1957 | &sandybridge_cursor_srwm_info, | |
1958 | &fbc_wm, &plane_wm, &cursor_wm)) | |
1959 | return; | |
1960 | ||
1961 | I915_WRITE(WM1_LP_ILK, | |
1962 | WM1_LP_SR_EN | | |
b0aea5dc | 1963 | (dev_priv->wm.pri_latency[1] << WM1_LP_LATENCY_SHIFT) | |
c43d0188 CW |
1964 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
1965 | (plane_wm << WM1_LP_SR_SHIFT) | | |
1966 | cursor_wm); | |
1967 | ||
1968 | /* WM2 */ | |
1969 | if (!ironlake_compute_srwm(dev, 2, enabled, | |
b0aea5dc | 1970 | dev_priv->wm.pri_latency[2] * 500, |
c43d0188 CW |
1971 | &sandybridge_display_srwm_info, |
1972 | &sandybridge_cursor_srwm_info, | |
1973 | &fbc_wm, &plane_wm, &cursor_wm)) | |
1974 | return; | |
1975 | ||
1976 | I915_WRITE(WM2_LP_ILK, | |
1977 | WM2_LP_EN | | |
b0aea5dc | 1978 | (dev_priv->wm.pri_latency[2] << WM1_LP_LATENCY_SHIFT) | |
c43d0188 CW |
1979 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
1980 | (plane_wm << WM1_LP_SR_SHIFT) | | |
1981 | cursor_wm); | |
1982 | ||
1983 | /* WM3 */ | |
1984 | if (!ironlake_compute_srwm(dev, 3, enabled, | |
b0aea5dc | 1985 | dev_priv->wm.pri_latency[3] * 500, |
c43d0188 CW |
1986 | &sandybridge_display_srwm_info, |
1987 | &sandybridge_cursor_srwm_info, | |
1988 | &fbc_wm, &plane_wm, &cursor_wm)) | |
1989 | return; | |
1990 | ||
1991 | I915_WRITE(WM3_LP_ILK, | |
1992 | WM3_LP_EN | | |
b0aea5dc | 1993 | (dev_priv->wm.pri_latency[3] << WM1_LP_LATENCY_SHIFT) | |
c43d0188 CW |
1994 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
1995 | (plane_wm << WM1_LP_SR_SHIFT) | | |
1996 | cursor_wm); | |
1997 | } | |
1998 | ||
46ba614c | 1999 | static void ivybridge_update_wm(struct drm_crtc *crtc) |
c43d0188 | 2000 | { |
46ba614c | 2001 | struct drm_device *dev = crtc->dev; |
c43d0188 | 2002 | struct drm_i915_private *dev_priv = dev->dev_private; |
b0aea5dc | 2003 | int latency = dev_priv->wm.pri_latency[0] * 100; /* In unit 0.1us */ |
c43d0188 CW |
2004 | u32 val; |
2005 | int fbc_wm, plane_wm, cursor_wm; | |
2006 | int ignore_fbc_wm, ignore_plane_wm, ignore_cursor_wm; | |
2007 | unsigned int enabled; | |
2008 | ||
2009 | enabled = 0; | |
51cea1f4 | 2010 | if (g4x_compute_wm0(dev, PIPE_A, |
c43d0188 CW |
2011 | &sandybridge_display_wm_info, latency, |
2012 | &sandybridge_cursor_wm_info, latency, | |
2013 | &plane_wm, &cursor_wm)) { | |
2014 | val = I915_READ(WM0_PIPEA_ILK); | |
2015 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); | |
2016 | I915_WRITE(WM0_PIPEA_ILK, val | | |
2017 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); | |
2018 | DRM_DEBUG_KMS("FIFO watermarks For pipe A -" | |
2019 | " plane %d, " "cursor: %d\n", | |
2020 | plane_wm, cursor_wm); | |
51cea1f4 | 2021 | enabled |= 1 << PIPE_A; |
c43d0188 CW |
2022 | } |
2023 | ||
51cea1f4 | 2024 | if (g4x_compute_wm0(dev, PIPE_B, |
c43d0188 CW |
2025 | &sandybridge_display_wm_info, latency, |
2026 | &sandybridge_cursor_wm_info, latency, | |
2027 | &plane_wm, &cursor_wm)) { | |
2028 | val = I915_READ(WM0_PIPEB_ILK); | |
2029 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); | |
2030 | I915_WRITE(WM0_PIPEB_ILK, val | | |
2031 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); | |
2032 | DRM_DEBUG_KMS("FIFO watermarks For pipe B -" | |
2033 | " plane %d, cursor: %d\n", | |
2034 | plane_wm, cursor_wm); | |
51cea1f4 | 2035 | enabled |= 1 << PIPE_B; |
c43d0188 CW |
2036 | } |
2037 | ||
51cea1f4 | 2038 | if (g4x_compute_wm0(dev, PIPE_C, |
b445e3b0 ED |
2039 | &sandybridge_display_wm_info, latency, |
2040 | &sandybridge_cursor_wm_info, latency, | |
2041 | &plane_wm, &cursor_wm)) { | |
2042 | val = I915_READ(WM0_PIPEC_IVB); | |
2043 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); | |
2044 | I915_WRITE(WM0_PIPEC_IVB, val | | |
2045 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); | |
2046 | DRM_DEBUG_KMS("FIFO watermarks For pipe C -" | |
2047 | " plane %d, cursor: %d\n", | |
2048 | plane_wm, cursor_wm); | |
51cea1f4 | 2049 | enabled |= 1 << PIPE_C; |
b445e3b0 ED |
2050 | } |
2051 | ||
2052 | /* | |
2053 | * Calculate and update the self-refresh watermark only when one | |
2054 | * display plane is used. | |
2055 | * | |
2056 | * SNB support 3 levels of watermark. | |
2057 | * | |
2058 | * WM1/WM2/WM2 watermarks have to be enabled in the ascending order, | |
2059 | * and disabled in the descending order | |
2060 | * | |
2061 | */ | |
2062 | I915_WRITE(WM3_LP_ILK, 0); | |
2063 | I915_WRITE(WM2_LP_ILK, 0); | |
2064 | I915_WRITE(WM1_LP_ILK, 0); | |
2065 | ||
2066 | if (!single_plane_enabled(enabled) || | |
2067 | dev_priv->sprite_scaling_enabled) | |
2068 | return; | |
2069 | enabled = ffs(enabled) - 1; | |
2070 | ||
2071 | /* WM1 */ | |
2072 | if (!ironlake_compute_srwm(dev, 1, enabled, | |
b0aea5dc | 2073 | dev_priv->wm.pri_latency[1] * 500, |
b445e3b0 ED |
2074 | &sandybridge_display_srwm_info, |
2075 | &sandybridge_cursor_srwm_info, | |
2076 | &fbc_wm, &plane_wm, &cursor_wm)) | |
2077 | return; | |
2078 | ||
2079 | I915_WRITE(WM1_LP_ILK, | |
2080 | WM1_LP_SR_EN | | |
b0aea5dc | 2081 | (dev_priv->wm.pri_latency[1] << WM1_LP_LATENCY_SHIFT) | |
b445e3b0 ED |
2082 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
2083 | (plane_wm << WM1_LP_SR_SHIFT) | | |
2084 | cursor_wm); | |
2085 | ||
2086 | /* WM2 */ | |
2087 | if (!ironlake_compute_srwm(dev, 2, enabled, | |
b0aea5dc | 2088 | dev_priv->wm.pri_latency[2] * 500, |
b445e3b0 ED |
2089 | &sandybridge_display_srwm_info, |
2090 | &sandybridge_cursor_srwm_info, | |
2091 | &fbc_wm, &plane_wm, &cursor_wm)) | |
2092 | return; | |
2093 | ||
2094 | I915_WRITE(WM2_LP_ILK, | |
2095 | WM2_LP_EN | | |
b0aea5dc | 2096 | (dev_priv->wm.pri_latency[2] << WM1_LP_LATENCY_SHIFT) | |
b445e3b0 ED |
2097 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
2098 | (plane_wm << WM1_LP_SR_SHIFT) | | |
2099 | cursor_wm); | |
2100 | ||
c43d0188 | 2101 | /* WM3, note we have to correct the cursor latency */ |
b445e3b0 | 2102 | if (!ironlake_compute_srwm(dev, 3, enabled, |
b0aea5dc | 2103 | dev_priv->wm.pri_latency[3] * 500, |
b445e3b0 ED |
2104 | &sandybridge_display_srwm_info, |
2105 | &sandybridge_cursor_srwm_info, | |
c43d0188 CW |
2106 | &fbc_wm, &plane_wm, &ignore_cursor_wm) || |
2107 | !ironlake_compute_srwm(dev, 3, enabled, | |
b0aea5dc | 2108 | dev_priv->wm.cur_latency[3] * 500, |
c43d0188 CW |
2109 | &sandybridge_display_srwm_info, |
2110 | &sandybridge_cursor_srwm_info, | |
2111 | &ignore_fbc_wm, &ignore_plane_wm, &cursor_wm)) | |
b445e3b0 ED |
2112 | return; |
2113 | ||
2114 | I915_WRITE(WM3_LP_ILK, | |
2115 | WM3_LP_EN | | |
b0aea5dc | 2116 | (dev_priv->wm.pri_latency[3] << WM1_LP_LATENCY_SHIFT) | |
b445e3b0 ED |
2117 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
2118 | (plane_wm << WM1_LP_SR_SHIFT) | | |
2119 | cursor_wm); | |
2120 | } | |
2121 | ||
3658729a VS |
2122 | static uint32_t ilk_pipe_pixel_rate(struct drm_device *dev, |
2123 | struct drm_crtc *crtc) | |
801bcfff PZ |
2124 | { |
2125 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
fd4daa9c | 2126 | uint32_t pixel_rate; |
801bcfff | 2127 | |
241bfc38 | 2128 | pixel_rate = intel_crtc->config.adjusted_mode.crtc_clock; |
801bcfff PZ |
2129 | |
2130 | /* We only use IF-ID interlacing. If we ever use PF-ID we'll need to | |
2131 | * adjust the pixel_rate here. */ | |
2132 | ||
fd4daa9c | 2133 | if (intel_crtc->config.pch_pfit.enabled) { |
801bcfff | 2134 | uint64_t pipe_w, pipe_h, pfit_w, pfit_h; |
fd4daa9c | 2135 | uint32_t pfit_size = intel_crtc->config.pch_pfit.size; |
801bcfff | 2136 | |
37327abd VS |
2137 | pipe_w = intel_crtc->config.pipe_src_w; |
2138 | pipe_h = intel_crtc->config.pipe_src_h; | |
801bcfff PZ |
2139 | pfit_w = (pfit_size >> 16) & 0xFFFF; |
2140 | pfit_h = pfit_size & 0xFFFF; | |
2141 | if (pipe_w < pfit_w) | |
2142 | pipe_w = pfit_w; | |
2143 | if (pipe_h < pfit_h) | |
2144 | pipe_h = pfit_h; | |
2145 | ||
2146 | pixel_rate = div_u64((uint64_t) pixel_rate * pipe_w * pipe_h, | |
2147 | pfit_w * pfit_h); | |
2148 | } | |
2149 | ||
2150 | return pixel_rate; | |
2151 | } | |
2152 | ||
37126462 | 2153 | /* latency must be in 0.1us units. */ |
23297044 | 2154 | static uint32_t ilk_wm_method1(uint32_t pixel_rate, uint8_t bytes_per_pixel, |
801bcfff PZ |
2155 | uint32_t latency) |
2156 | { | |
2157 | uint64_t ret; | |
2158 | ||
3312ba65 VS |
2159 | if (WARN(latency == 0, "Latency value missing\n")) |
2160 | return UINT_MAX; | |
2161 | ||
801bcfff PZ |
2162 | ret = (uint64_t) pixel_rate * bytes_per_pixel * latency; |
2163 | ret = DIV_ROUND_UP_ULL(ret, 64 * 10000) + 2; | |
2164 | ||
2165 | return ret; | |
2166 | } | |
2167 | ||
37126462 | 2168 | /* latency must be in 0.1us units. */ |
23297044 | 2169 | static uint32_t ilk_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, |
801bcfff PZ |
2170 | uint32_t horiz_pixels, uint8_t bytes_per_pixel, |
2171 | uint32_t latency) | |
2172 | { | |
2173 | uint32_t ret; | |
2174 | ||
3312ba65 VS |
2175 | if (WARN(latency == 0, "Latency value missing\n")) |
2176 | return UINT_MAX; | |
2177 | ||
801bcfff PZ |
2178 | ret = (latency * pixel_rate) / (pipe_htotal * 10000); |
2179 | ret = (ret + 1) * horiz_pixels * bytes_per_pixel; | |
2180 | ret = DIV_ROUND_UP(ret, 64) + 2; | |
2181 | return ret; | |
2182 | } | |
2183 | ||
23297044 | 2184 | static uint32_t ilk_wm_fbc(uint32_t pri_val, uint32_t horiz_pixels, |
cca32e9a PZ |
2185 | uint8_t bytes_per_pixel) |
2186 | { | |
2187 | return DIV_ROUND_UP(pri_val * 64, horiz_pixels * bytes_per_pixel) + 2; | |
2188 | } | |
2189 | ||
801bcfff PZ |
2190 | struct hsw_pipe_wm_parameters { |
2191 | bool active; | |
801bcfff PZ |
2192 | uint32_t pipe_htotal; |
2193 | uint32_t pixel_rate; | |
c35426d2 VS |
2194 | struct intel_plane_wm_parameters pri; |
2195 | struct intel_plane_wm_parameters spr; | |
2196 | struct intel_plane_wm_parameters cur; | |
801bcfff PZ |
2197 | }; |
2198 | ||
cca32e9a PZ |
2199 | struct hsw_wm_maximums { |
2200 | uint16_t pri; | |
2201 | uint16_t spr; | |
2202 | uint16_t cur; | |
2203 | uint16_t fbc; | |
2204 | }; | |
2205 | ||
240264f4 VS |
2206 | /* used in computing the new watermarks state */ |
2207 | struct intel_wm_config { | |
2208 | unsigned int num_pipes_active; | |
2209 | bool sprites_enabled; | |
2210 | bool sprites_scaled; | |
240264f4 VS |
2211 | }; |
2212 | ||
37126462 VS |
2213 | /* |
2214 | * For both WM_PIPE and WM_LP. | |
2215 | * mem_value must be in 0.1us units. | |
2216 | */ | |
ac830fe1 | 2217 | static uint32_t ilk_compute_pri_wm(const struct hsw_pipe_wm_parameters *params, |
cca32e9a PZ |
2218 | uint32_t mem_value, |
2219 | bool is_lp) | |
801bcfff | 2220 | { |
cca32e9a PZ |
2221 | uint32_t method1, method2; |
2222 | ||
c35426d2 | 2223 | if (!params->active || !params->pri.enabled) |
801bcfff PZ |
2224 | return 0; |
2225 | ||
23297044 | 2226 | method1 = ilk_wm_method1(params->pixel_rate, |
c35426d2 | 2227 | params->pri.bytes_per_pixel, |
cca32e9a PZ |
2228 | mem_value); |
2229 | ||
2230 | if (!is_lp) | |
2231 | return method1; | |
2232 | ||
23297044 | 2233 | method2 = ilk_wm_method2(params->pixel_rate, |
cca32e9a | 2234 | params->pipe_htotal, |
c35426d2 VS |
2235 | params->pri.horiz_pixels, |
2236 | params->pri.bytes_per_pixel, | |
cca32e9a PZ |
2237 | mem_value); |
2238 | ||
2239 | return min(method1, method2); | |
801bcfff PZ |
2240 | } |
2241 | ||
37126462 VS |
2242 | /* |
2243 | * For both WM_PIPE and WM_LP. | |
2244 | * mem_value must be in 0.1us units. | |
2245 | */ | |
ac830fe1 | 2246 | static uint32_t ilk_compute_spr_wm(const struct hsw_pipe_wm_parameters *params, |
801bcfff PZ |
2247 | uint32_t mem_value) |
2248 | { | |
2249 | uint32_t method1, method2; | |
2250 | ||
c35426d2 | 2251 | if (!params->active || !params->spr.enabled) |
801bcfff PZ |
2252 | return 0; |
2253 | ||
23297044 | 2254 | method1 = ilk_wm_method1(params->pixel_rate, |
c35426d2 | 2255 | params->spr.bytes_per_pixel, |
801bcfff | 2256 | mem_value); |
23297044 | 2257 | method2 = ilk_wm_method2(params->pixel_rate, |
801bcfff | 2258 | params->pipe_htotal, |
c35426d2 VS |
2259 | params->spr.horiz_pixels, |
2260 | params->spr.bytes_per_pixel, | |
801bcfff PZ |
2261 | mem_value); |
2262 | return min(method1, method2); | |
2263 | } | |
2264 | ||
37126462 VS |
2265 | /* |
2266 | * For both WM_PIPE and WM_LP. | |
2267 | * mem_value must be in 0.1us units. | |
2268 | */ | |
ac830fe1 | 2269 | static uint32_t ilk_compute_cur_wm(const struct hsw_pipe_wm_parameters *params, |
801bcfff PZ |
2270 | uint32_t mem_value) |
2271 | { | |
c35426d2 | 2272 | if (!params->active || !params->cur.enabled) |
801bcfff PZ |
2273 | return 0; |
2274 | ||
23297044 | 2275 | return ilk_wm_method2(params->pixel_rate, |
801bcfff | 2276 | params->pipe_htotal, |
c35426d2 VS |
2277 | params->cur.horiz_pixels, |
2278 | params->cur.bytes_per_pixel, | |
801bcfff PZ |
2279 | mem_value); |
2280 | } | |
2281 | ||
cca32e9a | 2282 | /* Only for WM_LP. */ |
ac830fe1 | 2283 | static uint32_t ilk_compute_fbc_wm(const struct hsw_pipe_wm_parameters *params, |
1fda9882 | 2284 | uint32_t pri_val) |
cca32e9a | 2285 | { |
c35426d2 | 2286 | if (!params->active || !params->pri.enabled) |
cca32e9a PZ |
2287 | return 0; |
2288 | ||
23297044 | 2289 | return ilk_wm_fbc(pri_val, |
c35426d2 VS |
2290 | params->pri.horiz_pixels, |
2291 | params->pri.bytes_per_pixel); | |
cca32e9a PZ |
2292 | } |
2293 | ||
158ae64f VS |
2294 | static unsigned int ilk_display_fifo_size(const struct drm_device *dev) |
2295 | { | |
416f4727 VS |
2296 | if (INTEL_INFO(dev)->gen >= 8) |
2297 | return 3072; | |
2298 | else if (INTEL_INFO(dev)->gen >= 7) | |
158ae64f VS |
2299 | return 768; |
2300 | else | |
2301 | return 512; | |
2302 | } | |
2303 | ||
2304 | /* Calculate the maximum primary/sprite plane watermark */ | |
2305 | static unsigned int ilk_plane_wm_max(const struct drm_device *dev, | |
2306 | int level, | |
240264f4 | 2307 | const struct intel_wm_config *config, |
158ae64f VS |
2308 | enum intel_ddb_partitioning ddb_partitioning, |
2309 | bool is_sprite) | |
2310 | { | |
2311 | unsigned int fifo_size = ilk_display_fifo_size(dev); | |
2312 | unsigned int max; | |
2313 | ||
2314 | /* if sprites aren't enabled, sprites get nothing */ | |
240264f4 | 2315 | if (is_sprite && !config->sprites_enabled) |
158ae64f VS |
2316 | return 0; |
2317 | ||
2318 | /* HSW allows LP1+ watermarks even with multiple pipes */ | |
240264f4 | 2319 | if (level == 0 || config->num_pipes_active > 1) { |
158ae64f VS |
2320 | fifo_size /= INTEL_INFO(dev)->num_pipes; |
2321 | ||
2322 | /* | |
2323 | * For some reason the non self refresh | |
2324 | * FIFO size is only half of the self | |
2325 | * refresh FIFO size on ILK/SNB. | |
2326 | */ | |
2327 | if (INTEL_INFO(dev)->gen <= 6) | |
2328 | fifo_size /= 2; | |
2329 | } | |
2330 | ||
240264f4 | 2331 | if (config->sprites_enabled) { |
158ae64f VS |
2332 | /* level 0 is always calculated with 1:1 split */ |
2333 | if (level > 0 && ddb_partitioning == INTEL_DDB_PART_5_6) { | |
2334 | if (is_sprite) | |
2335 | fifo_size *= 5; | |
2336 | fifo_size /= 6; | |
2337 | } else { | |
2338 | fifo_size /= 2; | |
2339 | } | |
2340 | } | |
2341 | ||
2342 | /* clamp to max that the registers can hold */ | |
416f4727 VS |
2343 | if (INTEL_INFO(dev)->gen >= 8) |
2344 | max = level == 0 ? 255 : 2047; | |
2345 | else if (INTEL_INFO(dev)->gen >= 7) | |
158ae64f VS |
2346 | /* IVB/HSW primary/sprite plane watermarks */ |
2347 | max = level == 0 ? 127 : 1023; | |
2348 | else if (!is_sprite) | |
2349 | /* ILK/SNB primary plane watermarks */ | |
2350 | max = level == 0 ? 127 : 511; | |
2351 | else | |
2352 | /* ILK/SNB sprite plane watermarks */ | |
2353 | max = level == 0 ? 63 : 255; | |
2354 | ||
2355 | return min(fifo_size, max); | |
2356 | } | |
2357 | ||
2358 | /* Calculate the maximum cursor plane watermark */ | |
2359 | static unsigned int ilk_cursor_wm_max(const struct drm_device *dev, | |
240264f4 VS |
2360 | int level, |
2361 | const struct intel_wm_config *config) | |
158ae64f VS |
2362 | { |
2363 | /* HSW LP1+ watermarks w/ multiple pipes */ | |
240264f4 | 2364 | if (level > 0 && config->num_pipes_active > 1) |
158ae64f VS |
2365 | return 64; |
2366 | ||
2367 | /* otherwise just report max that registers can hold */ | |
2368 | if (INTEL_INFO(dev)->gen >= 7) | |
2369 | return level == 0 ? 63 : 255; | |
2370 | else | |
2371 | return level == 0 ? 31 : 63; | |
2372 | } | |
2373 | ||
2374 | /* Calculate the maximum FBC watermark */ | |
416f4727 | 2375 | static unsigned int ilk_fbc_wm_max(struct drm_device *dev) |
158ae64f VS |
2376 | { |
2377 | /* max that registers can hold */ | |
416f4727 VS |
2378 | if (INTEL_INFO(dev)->gen >= 8) |
2379 | return 31; | |
2380 | else | |
2381 | return 15; | |
158ae64f VS |
2382 | } |
2383 | ||
34982fe1 VS |
2384 | static void ilk_compute_wm_maximums(struct drm_device *dev, |
2385 | int level, | |
2386 | const struct intel_wm_config *config, | |
2387 | enum intel_ddb_partitioning ddb_partitioning, | |
2388 | struct hsw_wm_maximums *max) | |
158ae64f | 2389 | { |
240264f4 VS |
2390 | max->pri = ilk_plane_wm_max(dev, level, config, ddb_partitioning, false); |
2391 | max->spr = ilk_plane_wm_max(dev, level, config, ddb_partitioning, true); | |
2392 | max->cur = ilk_cursor_wm_max(dev, level, config); | |
416f4727 | 2393 | max->fbc = ilk_fbc_wm_max(dev); |
158ae64f VS |
2394 | } |
2395 | ||
d9395655 VS |
2396 | static bool ilk_validate_wm_level(int level, |
2397 | const struct hsw_wm_maximums *max, | |
2398 | struct intel_wm_level *result) | |
a9786a11 VS |
2399 | { |
2400 | bool ret; | |
2401 | ||
2402 | /* already determined to be invalid? */ | |
2403 | if (!result->enable) | |
2404 | return false; | |
2405 | ||
2406 | result->enable = result->pri_val <= max->pri && | |
2407 | result->spr_val <= max->spr && | |
2408 | result->cur_val <= max->cur; | |
2409 | ||
2410 | ret = result->enable; | |
2411 | ||
2412 | /* | |
2413 | * HACK until we can pre-compute everything, | |
2414 | * and thus fail gracefully if LP0 watermarks | |
2415 | * are exceeded... | |
2416 | */ | |
2417 | if (level == 0 && !result->enable) { | |
2418 | if (result->pri_val > max->pri) | |
2419 | DRM_DEBUG_KMS("Primary WM%d too large %u (max %u)\n", | |
2420 | level, result->pri_val, max->pri); | |
2421 | if (result->spr_val > max->spr) | |
2422 | DRM_DEBUG_KMS("Sprite WM%d too large %u (max %u)\n", | |
2423 | level, result->spr_val, max->spr); | |
2424 | if (result->cur_val > max->cur) | |
2425 | DRM_DEBUG_KMS("Cursor WM%d too large %u (max %u)\n", | |
2426 | level, result->cur_val, max->cur); | |
2427 | ||
2428 | result->pri_val = min_t(uint32_t, result->pri_val, max->pri); | |
2429 | result->spr_val = min_t(uint32_t, result->spr_val, max->spr); | |
2430 | result->cur_val = min_t(uint32_t, result->cur_val, max->cur); | |
2431 | result->enable = true; | |
2432 | } | |
2433 | ||
a9786a11 VS |
2434 | return ret; |
2435 | } | |
2436 | ||
6f5ddd17 VS |
2437 | static void ilk_compute_wm_level(struct drm_i915_private *dev_priv, |
2438 | int level, | |
ac830fe1 | 2439 | const struct hsw_pipe_wm_parameters *p, |
1fd527cc | 2440 | struct intel_wm_level *result) |
6f5ddd17 VS |
2441 | { |
2442 | uint16_t pri_latency = dev_priv->wm.pri_latency[level]; | |
2443 | uint16_t spr_latency = dev_priv->wm.spr_latency[level]; | |
2444 | uint16_t cur_latency = dev_priv->wm.cur_latency[level]; | |
2445 | ||
2446 | /* WM1+ latency values stored in 0.5us units */ | |
2447 | if (level > 0) { | |
2448 | pri_latency *= 5; | |
2449 | spr_latency *= 5; | |
2450 | cur_latency *= 5; | |
2451 | } | |
2452 | ||
2453 | result->pri_val = ilk_compute_pri_wm(p, pri_latency, level); | |
2454 | result->spr_val = ilk_compute_spr_wm(p, spr_latency); | |
2455 | result->cur_val = ilk_compute_cur_wm(p, cur_latency); | |
2456 | result->fbc_val = ilk_compute_fbc_wm(p, result->pri_val); | |
2457 | result->enable = true; | |
2458 | } | |
2459 | ||
801bcfff PZ |
2460 | static uint32_t |
2461 | hsw_compute_linetime_wm(struct drm_device *dev, struct drm_crtc *crtc) | |
1f8eeabf ED |
2462 | { |
2463 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1011d8c4 | 2464 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
1011d8c4 | 2465 | struct drm_display_mode *mode = &intel_crtc->config.adjusted_mode; |
85a02deb | 2466 | u32 linetime, ips_linetime; |
1f8eeabf | 2467 | |
801bcfff PZ |
2468 | if (!intel_crtc_active(crtc)) |
2469 | return 0; | |
1011d8c4 | 2470 | |
1f8eeabf ED |
2471 | /* The WM are computed with base on how long it takes to fill a single |
2472 | * row at the given clock rate, multiplied by 8. | |
2473 | * */ | |
85a02deb PZ |
2474 | linetime = DIV_ROUND_CLOSEST(mode->htotal * 1000 * 8, mode->clock); |
2475 | ips_linetime = DIV_ROUND_CLOSEST(mode->htotal * 1000 * 8, | |
2476 | intel_ddi_get_cdclk_freq(dev_priv)); | |
1f8eeabf | 2477 | |
801bcfff PZ |
2478 | return PIPE_WM_LINETIME_IPS_LINETIME(ips_linetime) | |
2479 | PIPE_WM_LINETIME_TIME(linetime); | |
1f8eeabf ED |
2480 | } |
2481 | ||
12b134df VS |
2482 | static void intel_read_wm_latency(struct drm_device *dev, uint16_t wm[5]) |
2483 | { | |
2484 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2485 | ||
2486 | if (IS_HASWELL(dev)) { | |
2487 | uint64_t sskpd = I915_READ64(MCH_SSKPD); | |
2488 | ||
2489 | wm[0] = (sskpd >> 56) & 0xFF; | |
2490 | if (wm[0] == 0) | |
2491 | wm[0] = sskpd & 0xF; | |
e5d5019e VS |
2492 | wm[1] = (sskpd >> 4) & 0xFF; |
2493 | wm[2] = (sskpd >> 12) & 0xFF; | |
2494 | wm[3] = (sskpd >> 20) & 0x1FF; | |
2495 | wm[4] = (sskpd >> 32) & 0x1FF; | |
63cf9a13 VS |
2496 | } else if (INTEL_INFO(dev)->gen >= 6) { |
2497 | uint32_t sskpd = I915_READ(MCH_SSKPD); | |
2498 | ||
2499 | wm[0] = (sskpd >> SSKPD_WM0_SHIFT) & SSKPD_WM_MASK; | |
2500 | wm[1] = (sskpd >> SSKPD_WM1_SHIFT) & SSKPD_WM_MASK; | |
2501 | wm[2] = (sskpd >> SSKPD_WM2_SHIFT) & SSKPD_WM_MASK; | |
2502 | wm[3] = (sskpd >> SSKPD_WM3_SHIFT) & SSKPD_WM_MASK; | |
3a88d0ac VS |
2503 | } else if (INTEL_INFO(dev)->gen >= 5) { |
2504 | uint32_t mltr = I915_READ(MLTR_ILK); | |
2505 | ||
2506 | /* ILK primary LP0 latency is 700 ns */ | |
2507 | wm[0] = 7; | |
2508 | wm[1] = (mltr >> MLTR_WM1_SHIFT) & ILK_SRLT_MASK; | |
2509 | wm[2] = (mltr >> MLTR_WM2_SHIFT) & ILK_SRLT_MASK; | |
12b134df VS |
2510 | } |
2511 | } | |
2512 | ||
53615a5e VS |
2513 | static void intel_fixup_spr_wm_latency(struct drm_device *dev, uint16_t wm[5]) |
2514 | { | |
2515 | /* ILK sprite LP0 latency is 1300 ns */ | |
2516 | if (INTEL_INFO(dev)->gen == 5) | |
2517 | wm[0] = 13; | |
2518 | } | |
2519 | ||
2520 | static void intel_fixup_cur_wm_latency(struct drm_device *dev, uint16_t wm[5]) | |
2521 | { | |
2522 | /* ILK cursor LP0 latency is 1300 ns */ | |
2523 | if (INTEL_INFO(dev)->gen == 5) | |
2524 | wm[0] = 13; | |
2525 | ||
2526 | /* WaDoubleCursorLP3Latency:ivb */ | |
2527 | if (IS_IVYBRIDGE(dev)) | |
2528 | wm[3] *= 2; | |
2529 | } | |
2530 | ||
ad0d6dc4 | 2531 | static int ilk_wm_max_level(const struct drm_device *dev) |
26ec971e | 2532 | { |
26ec971e VS |
2533 | /* how many WM levels are we expecting */ |
2534 | if (IS_HASWELL(dev)) | |
ad0d6dc4 | 2535 | return 4; |
26ec971e | 2536 | else if (INTEL_INFO(dev)->gen >= 6) |
ad0d6dc4 | 2537 | return 3; |
26ec971e | 2538 | else |
ad0d6dc4 VS |
2539 | return 2; |
2540 | } | |
2541 | ||
2542 | static void intel_print_wm_latency(struct drm_device *dev, | |
2543 | const char *name, | |
2544 | const uint16_t wm[5]) | |
2545 | { | |
2546 | int level, max_level = ilk_wm_max_level(dev); | |
26ec971e VS |
2547 | |
2548 | for (level = 0; level <= max_level; level++) { | |
2549 | unsigned int latency = wm[level]; | |
2550 | ||
2551 | if (latency == 0) { | |
2552 | DRM_ERROR("%s WM%d latency not provided\n", | |
2553 | name, level); | |
2554 | continue; | |
2555 | } | |
2556 | ||
2557 | /* WM1+ latency values in 0.5us units */ | |
2558 | if (level > 0) | |
2559 | latency *= 5; | |
2560 | ||
2561 | DRM_DEBUG_KMS("%s WM%d latency %u (%u.%u usec)\n", | |
2562 | name, level, wm[level], | |
2563 | latency / 10, latency % 10); | |
2564 | } | |
2565 | } | |
2566 | ||
53615a5e VS |
2567 | static void intel_setup_wm_latency(struct drm_device *dev) |
2568 | { | |
2569 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2570 | ||
2571 | intel_read_wm_latency(dev, dev_priv->wm.pri_latency); | |
2572 | ||
2573 | memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency, | |
2574 | sizeof(dev_priv->wm.pri_latency)); | |
2575 | memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency, | |
2576 | sizeof(dev_priv->wm.pri_latency)); | |
2577 | ||
2578 | intel_fixup_spr_wm_latency(dev, dev_priv->wm.spr_latency); | |
2579 | intel_fixup_cur_wm_latency(dev, dev_priv->wm.cur_latency); | |
26ec971e VS |
2580 | |
2581 | intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); | |
2582 | intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); | |
2583 | intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); | |
53615a5e VS |
2584 | } |
2585 | ||
7c4a395f VS |
2586 | static void hsw_compute_wm_parameters(struct drm_crtc *crtc, |
2587 | struct hsw_pipe_wm_parameters *p, | |
a485bfb8 | 2588 | struct intel_wm_config *config) |
1011d8c4 | 2589 | { |
7c4a395f VS |
2590 | struct drm_device *dev = crtc->dev; |
2591 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
2592 | enum pipe pipe = intel_crtc->pipe; | |
7c4a395f | 2593 | struct drm_plane *plane; |
1011d8c4 | 2594 | |
7c4a395f VS |
2595 | p->active = intel_crtc_active(crtc); |
2596 | if (p->active) { | |
801bcfff | 2597 | p->pipe_htotal = intel_crtc->config.adjusted_mode.htotal; |
3658729a | 2598 | p->pixel_rate = ilk_pipe_pixel_rate(dev, crtc); |
c35426d2 VS |
2599 | p->pri.bytes_per_pixel = crtc->fb->bits_per_pixel / 8; |
2600 | p->cur.bytes_per_pixel = 4; | |
37327abd | 2601 | p->pri.horiz_pixels = intel_crtc->config.pipe_src_w; |
c35426d2 VS |
2602 | p->cur.horiz_pixels = 64; |
2603 | /* TODO: for now, assume primary and cursor planes are always enabled. */ | |
2604 | p->pri.enabled = true; | |
2605 | p->cur.enabled = true; | |
801bcfff PZ |
2606 | } |
2607 | ||
7c4a395f | 2608 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
a485bfb8 | 2609 | config->num_pipes_active += intel_crtc_active(crtc); |
7c4a395f | 2610 | |
801bcfff PZ |
2611 | list_for_each_entry(plane, &dev->mode_config.plane_list, head) { |
2612 | struct intel_plane *intel_plane = to_intel_plane(plane); | |
801bcfff | 2613 | |
7c4a395f VS |
2614 | if (intel_plane->pipe == pipe) |
2615 | p->spr = intel_plane->wm; | |
cca32e9a | 2616 | |
a485bfb8 VS |
2617 | config->sprites_enabled |= intel_plane->wm.enabled; |
2618 | config->sprites_scaled |= intel_plane->wm.scaled; | |
cca32e9a | 2619 | } |
801bcfff PZ |
2620 | } |
2621 | ||
0b2ae6d7 VS |
2622 | /* Compute new watermarks for the pipe */ |
2623 | static bool intel_compute_pipe_wm(struct drm_crtc *crtc, | |
2624 | const struct hsw_pipe_wm_parameters *params, | |
2625 | struct intel_pipe_wm *pipe_wm) | |
2626 | { | |
2627 | struct drm_device *dev = crtc->dev; | |
2628 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2629 | int level, max_level = ilk_wm_max_level(dev); | |
2630 | /* LP0 watermark maximums depend on this pipe alone */ | |
2631 | struct intel_wm_config config = { | |
2632 | .num_pipes_active = 1, | |
2633 | .sprites_enabled = params->spr.enabled, | |
2634 | .sprites_scaled = params->spr.scaled, | |
2635 | }; | |
2636 | struct hsw_wm_maximums max; | |
2637 | ||
0b2ae6d7 | 2638 | /* LP0 watermarks always use 1/2 DDB partitioning */ |
34982fe1 | 2639 | ilk_compute_wm_maximums(dev, 0, &config, INTEL_DDB_PART_1_2, &max); |
0b2ae6d7 VS |
2640 | |
2641 | for (level = 0; level <= max_level; level++) | |
2642 | ilk_compute_wm_level(dev_priv, level, params, | |
2643 | &pipe_wm->wm[level]); | |
2644 | ||
2645 | pipe_wm->linetime = hsw_compute_linetime_wm(dev, crtc); | |
2646 | ||
2647 | /* At least LP0 must be valid */ | |
d9395655 | 2648 | return ilk_validate_wm_level(0, &max, &pipe_wm->wm[0]); |
0b2ae6d7 VS |
2649 | } |
2650 | ||
2651 | /* | |
2652 | * Merge the watermarks from all active pipes for a specific level. | |
2653 | */ | |
2654 | static void ilk_merge_wm_level(struct drm_device *dev, | |
2655 | int level, | |
2656 | struct intel_wm_level *ret_wm) | |
2657 | { | |
2658 | const struct intel_crtc *intel_crtc; | |
2659 | ||
2660 | list_for_each_entry(intel_crtc, &dev->mode_config.crtc_list, base.head) { | |
2661 | const struct intel_wm_level *wm = | |
2662 | &intel_crtc->wm.active.wm[level]; | |
2663 | ||
2664 | if (!wm->enable) | |
2665 | return; | |
2666 | ||
2667 | ret_wm->pri_val = max(ret_wm->pri_val, wm->pri_val); | |
2668 | ret_wm->spr_val = max(ret_wm->spr_val, wm->spr_val); | |
2669 | ret_wm->cur_val = max(ret_wm->cur_val, wm->cur_val); | |
2670 | ret_wm->fbc_val = max(ret_wm->fbc_val, wm->fbc_val); | |
2671 | } | |
2672 | ||
2673 | ret_wm->enable = true; | |
2674 | } | |
2675 | ||
2676 | /* | |
2677 | * Merge all low power watermarks for all active pipes. | |
2678 | */ | |
2679 | static void ilk_wm_merge(struct drm_device *dev, | |
2680 | const struct hsw_wm_maximums *max, | |
2681 | struct intel_pipe_wm *merged) | |
2682 | { | |
2683 | int level, max_level = ilk_wm_max_level(dev); | |
2684 | ||
2685 | merged->fbc_wm_enabled = true; | |
2686 | ||
2687 | /* merge each WM1+ level */ | |
2688 | for (level = 1; level <= max_level; level++) { | |
2689 | struct intel_wm_level *wm = &merged->wm[level]; | |
2690 | ||
2691 | ilk_merge_wm_level(dev, level, wm); | |
2692 | ||
d9395655 | 2693 | if (!ilk_validate_wm_level(level, max, wm)) |
0b2ae6d7 VS |
2694 | break; |
2695 | ||
2696 | /* | |
2697 | * The spec says it is preferred to disable | |
2698 | * FBC WMs instead of disabling a WM level. | |
2699 | */ | |
2700 | if (wm->fbc_val > max->fbc) { | |
2701 | merged->fbc_wm_enabled = false; | |
2702 | wm->fbc_val = 0; | |
2703 | } | |
2704 | } | |
2705 | } | |
2706 | ||
b380ca3c VS |
2707 | static int ilk_wm_lp_to_level(int wm_lp, const struct intel_pipe_wm *pipe_wm) |
2708 | { | |
2709 | /* LP1,LP2,LP3 levels are either 1,2,3 or 1,3,4 */ | |
2710 | return wm_lp + (wm_lp >= 2 && pipe_wm->wm[4].enable); | |
2711 | } | |
2712 | ||
801bcfff | 2713 | static void hsw_compute_wm_results(struct drm_device *dev, |
0362c781 | 2714 | const struct intel_pipe_wm *merged, |
609cedef | 2715 | enum intel_ddb_partitioning partitioning, |
801bcfff PZ |
2716 | struct hsw_wm_values *results) |
2717 | { | |
0b2ae6d7 VS |
2718 | struct intel_crtc *intel_crtc; |
2719 | int level, wm_lp; | |
cca32e9a | 2720 | |
0362c781 | 2721 | results->enable_fbc_wm = merged->fbc_wm_enabled; |
609cedef | 2722 | results->partitioning = partitioning; |
cca32e9a | 2723 | |
0b2ae6d7 | 2724 | /* LP1+ register values */ |
cca32e9a | 2725 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { |
1fd527cc | 2726 | const struct intel_wm_level *r; |
801bcfff | 2727 | |
b380ca3c | 2728 | level = ilk_wm_lp_to_level(wm_lp, merged); |
0b2ae6d7 | 2729 | |
0362c781 | 2730 | r = &merged->wm[level]; |
0b2ae6d7 | 2731 | if (!r->enable) |
cca32e9a PZ |
2732 | break; |
2733 | ||
416f4727 VS |
2734 | results->wm_lp[wm_lp - 1] = WM3_LP_EN | |
2735 | ((level * 2) << WM1_LP_LATENCY_SHIFT) | | |
2736 | (r->pri_val << WM1_LP_SR_SHIFT) | | |
2737 | r->cur_val; | |
2738 | ||
2739 | if (INTEL_INFO(dev)->gen >= 8) | |
2740 | results->wm_lp[wm_lp - 1] |= | |
2741 | r->fbc_val << WM1_LP_FBC_SHIFT_BDW; | |
2742 | else | |
2743 | results->wm_lp[wm_lp - 1] |= | |
2744 | r->fbc_val << WM1_LP_FBC_SHIFT; | |
2745 | ||
cca32e9a PZ |
2746 | results->wm_lp_spr[wm_lp - 1] = r->spr_val; |
2747 | } | |
801bcfff | 2748 | |
0b2ae6d7 VS |
2749 | /* LP0 register values */ |
2750 | list_for_each_entry(intel_crtc, &dev->mode_config.crtc_list, base.head) { | |
2751 | enum pipe pipe = intel_crtc->pipe; | |
2752 | const struct intel_wm_level *r = | |
2753 | &intel_crtc->wm.active.wm[0]; | |
2754 | ||
2755 | if (WARN_ON(!r->enable)) | |
2756 | continue; | |
2757 | ||
2758 | results->wm_linetime[pipe] = intel_crtc->wm.active.linetime; | |
1011d8c4 | 2759 | |
0b2ae6d7 VS |
2760 | results->wm_pipe[pipe] = |
2761 | (r->pri_val << WM0_PIPE_PLANE_SHIFT) | | |
2762 | (r->spr_val << WM0_PIPE_SPRITE_SHIFT) | | |
2763 | r->cur_val; | |
801bcfff PZ |
2764 | } |
2765 | } | |
2766 | ||
861f3389 PZ |
2767 | /* Find the result with the highest level enabled. Check for enable_fbc_wm in |
2768 | * case both are at the same level. Prefer r1 in case they're the same. */ | |
198a1e9b VS |
2769 | static struct intel_pipe_wm *hsw_find_best_result(struct drm_device *dev, |
2770 | struct intel_pipe_wm *r1, | |
2771 | struct intel_pipe_wm *r2) | |
861f3389 | 2772 | { |
198a1e9b VS |
2773 | int level, max_level = ilk_wm_max_level(dev); |
2774 | int level1 = 0, level2 = 0; | |
861f3389 | 2775 | |
198a1e9b VS |
2776 | for (level = 1; level <= max_level; level++) { |
2777 | if (r1->wm[level].enable) | |
2778 | level1 = level; | |
2779 | if (r2->wm[level].enable) | |
2780 | level2 = level; | |
861f3389 PZ |
2781 | } |
2782 | ||
198a1e9b VS |
2783 | if (level1 == level2) { |
2784 | if (r2->fbc_wm_enabled && !r1->fbc_wm_enabled) | |
861f3389 PZ |
2785 | return r2; |
2786 | else | |
2787 | return r1; | |
198a1e9b | 2788 | } else if (level1 > level2) { |
861f3389 PZ |
2789 | return r1; |
2790 | } else { | |
2791 | return r2; | |
2792 | } | |
2793 | } | |
2794 | ||
49a687c4 VS |
2795 | /* dirty bits used to track which watermarks need changes */ |
2796 | #define WM_DIRTY_PIPE(pipe) (1 << (pipe)) | |
2797 | #define WM_DIRTY_LINETIME(pipe) (1 << (8 + (pipe))) | |
2798 | #define WM_DIRTY_LP(wm_lp) (1 << (15 + (wm_lp))) | |
2799 | #define WM_DIRTY_LP_ALL (WM_DIRTY_LP(1) | WM_DIRTY_LP(2) | WM_DIRTY_LP(3)) | |
2800 | #define WM_DIRTY_FBC (1 << 24) | |
2801 | #define WM_DIRTY_DDB (1 << 25) | |
2802 | ||
2803 | static unsigned int ilk_compute_wm_dirty(struct drm_device *dev, | |
2804 | const struct hsw_wm_values *old, | |
2805 | const struct hsw_wm_values *new) | |
2806 | { | |
2807 | unsigned int dirty = 0; | |
2808 | enum pipe pipe; | |
2809 | int wm_lp; | |
2810 | ||
2811 | for_each_pipe(pipe) { | |
2812 | if (old->wm_linetime[pipe] != new->wm_linetime[pipe]) { | |
2813 | dirty |= WM_DIRTY_LINETIME(pipe); | |
2814 | /* Must disable LP1+ watermarks too */ | |
2815 | dirty |= WM_DIRTY_LP_ALL; | |
2816 | } | |
2817 | ||
2818 | if (old->wm_pipe[pipe] != new->wm_pipe[pipe]) { | |
2819 | dirty |= WM_DIRTY_PIPE(pipe); | |
2820 | /* Must disable LP1+ watermarks too */ | |
2821 | dirty |= WM_DIRTY_LP_ALL; | |
2822 | } | |
2823 | } | |
2824 | ||
2825 | if (old->enable_fbc_wm != new->enable_fbc_wm) { | |
2826 | dirty |= WM_DIRTY_FBC; | |
2827 | /* Must disable LP1+ watermarks too */ | |
2828 | dirty |= WM_DIRTY_LP_ALL; | |
2829 | } | |
2830 | ||
2831 | if (old->partitioning != new->partitioning) { | |
2832 | dirty |= WM_DIRTY_DDB; | |
2833 | /* Must disable LP1+ watermarks too */ | |
2834 | dirty |= WM_DIRTY_LP_ALL; | |
2835 | } | |
2836 | ||
2837 | /* LP1+ watermarks already deemed dirty, no need to continue */ | |
2838 | if (dirty & WM_DIRTY_LP_ALL) | |
2839 | return dirty; | |
2840 | ||
2841 | /* Find the lowest numbered LP1+ watermark in need of an update... */ | |
2842 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { | |
2843 | if (old->wm_lp[wm_lp - 1] != new->wm_lp[wm_lp - 1] || | |
2844 | old->wm_lp_spr[wm_lp - 1] != new->wm_lp_spr[wm_lp - 1]) | |
2845 | break; | |
2846 | } | |
2847 | ||
2848 | /* ...and mark it and all higher numbered LP1+ watermarks as dirty */ | |
2849 | for (; wm_lp <= 3; wm_lp++) | |
2850 | dirty |= WM_DIRTY_LP(wm_lp); | |
2851 | ||
2852 | return dirty; | |
2853 | } | |
2854 | ||
801bcfff PZ |
2855 | /* |
2856 | * The spec says we shouldn't write when we don't need, because every write | |
2857 | * causes WMs to be re-evaluated, expending some power. | |
2858 | */ | |
2859 | static void hsw_write_wm_values(struct drm_i915_private *dev_priv, | |
609cedef | 2860 | struct hsw_wm_values *results) |
801bcfff | 2861 | { |
243e6a44 | 2862 | struct hsw_wm_values *previous = &dev_priv->wm.hw; |
49a687c4 | 2863 | unsigned int dirty; |
801bcfff | 2864 | uint32_t val; |
801bcfff | 2865 | |
243e6a44 | 2866 | dirty = ilk_compute_wm_dirty(dev_priv->dev, previous, results); |
49a687c4 | 2867 | if (!dirty) |
801bcfff PZ |
2868 | return; |
2869 | ||
243e6a44 | 2870 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] != 0) |
801bcfff | 2871 | I915_WRITE(WM3_LP_ILK, 0); |
243e6a44 | 2872 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] != 0) |
801bcfff | 2873 | I915_WRITE(WM2_LP_ILK, 0); |
243e6a44 | 2874 | if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] != 0) |
801bcfff PZ |
2875 | I915_WRITE(WM1_LP_ILK, 0); |
2876 | ||
49a687c4 | 2877 | if (dirty & WM_DIRTY_PIPE(PIPE_A)) |
801bcfff | 2878 | I915_WRITE(WM0_PIPEA_ILK, results->wm_pipe[0]); |
49a687c4 | 2879 | if (dirty & WM_DIRTY_PIPE(PIPE_B)) |
801bcfff | 2880 | I915_WRITE(WM0_PIPEB_ILK, results->wm_pipe[1]); |
49a687c4 | 2881 | if (dirty & WM_DIRTY_PIPE(PIPE_C)) |
801bcfff PZ |
2882 | I915_WRITE(WM0_PIPEC_IVB, results->wm_pipe[2]); |
2883 | ||
49a687c4 | 2884 | if (dirty & WM_DIRTY_LINETIME(PIPE_A)) |
801bcfff | 2885 | I915_WRITE(PIPE_WM_LINETIME(PIPE_A), results->wm_linetime[0]); |
49a687c4 | 2886 | if (dirty & WM_DIRTY_LINETIME(PIPE_B)) |
801bcfff | 2887 | I915_WRITE(PIPE_WM_LINETIME(PIPE_B), results->wm_linetime[1]); |
49a687c4 | 2888 | if (dirty & WM_DIRTY_LINETIME(PIPE_C)) |
801bcfff PZ |
2889 | I915_WRITE(PIPE_WM_LINETIME(PIPE_C), results->wm_linetime[2]); |
2890 | ||
49a687c4 | 2891 | if (dirty & WM_DIRTY_DDB) { |
801bcfff | 2892 | val = I915_READ(WM_MISC); |
609cedef | 2893 | if (results->partitioning == INTEL_DDB_PART_1_2) |
801bcfff PZ |
2894 | val &= ~WM_MISC_DATA_PARTITION_5_6; |
2895 | else | |
2896 | val |= WM_MISC_DATA_PARTITION_5_6; | |
2897 | I915_WRITE(WM_MISC, val); | |
1011d8c4 PZ |
2898 | } |
2899 | ||
49a687c4 | 2900 | if (dirty & WM_DIRTY_FBC) { |
cca32e9a PZ |
2901 | val = I915_READ(DISP_ARB_CTL); |
2902 | if (results->enable_fbc_wm) | |
2903 | val &= ~DISP_FBC_WM_DIS; | |
2904 | else | |
2905 | val |= DISP_FBC_WM_DIS; | |
2906 | I915_WRITE(DISP_ARB_CTL, val); | |
2907 | } | |
2908 | ||
243e6a44 | 2909 | if (dirty & WM_DIRTY_LP(1) && previous->wm_lp_spr[0] != results->wm_lp_spr[0]) |
801bcfff | 2910 | I915_WRITE(WM1S_LP_ILK, results->wm_lp_spr[0]); |
243e6a44 | 2911 | if (dirty & WM_DIRTY_LP(2) && previous->wm_lp_spr[1] != results->wm_lp_spr[1]) |
801bcfff | 2912 | I915_WRITE(WM2S_LP_IVB, results->wm_lp_spr[1]); |
243e6a44 | 2913 | if (dirty & WM_DIRTY_LP(3) && previous->wm_lp_spr[2] != results->wm_lp_spr[2]) |
801bcfff PZ |
2914 | I915_WRITE(WM3S_LP_IVB, results->wm_lp_spr[2]); |
2915 | ||
49a687c4 | 2916 | if (dirty & WM_DIRTY_LP(1) && results->wm_lp[0] != 0) |
801bcfff | 2917 | I915_WRITE(WM1_LP_ILK, results->wm_lp[0]); |
49a687c4 | 2918 | if (dirty & WM_DIRTY_LP(2) && results->wm_lp[1] != 0) |
801bcfff | 2919 | I915_WRITE(WM2_LP_ILK, results->wm_lp[1]); |
49a687c4 | 2920 | if (dirty & WM_DIRTY_LP(3) && results->wm_lp[2] != 0) |
801bcfff | 2921 | I915_WRITE(WM3_LP_ILK, results->wm_lp[2]); |
609cedef VS |
2922 | |
2923 | dev_priv->wm.hw = *results; | |
801bcfff PZ |
2924 | } |
2925 | ||
46ba614c | 2926 | static void haswell_update_wm(struct drm_crtc *crtc) |
801bcfff | 2927 | { |
7c4a395f | 2928 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
46ba614c | 2929 | struct drm_device *dev = crtc->dev; |
801bcfff | 2930 | struct drm_i915_private *dev_priv = dev->dev_private; |
a485bfb8 | 2931 | struct hsw_wm_maximums max; |
7c4a395f | 2932 | struct hsw_pipe_wm_parameters params = {}; |
198a1e9b | 2933 | struct hsw_wm_values results = {}; |
77c122bc | 2934 | enum intel_ddb_partitioning partitioning; |
7c4a395f | 2935 | struct intel_pipe_wm pipe_wm = {}; |
198a1e9b | 2936 | struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm; |
a485bfb8 | 2937 | struct intel_wm_config config = {}; |
7c4a395f | 2938 | |
a485bfb8 | 2939 | hsw_compute_wm_parameters(crtc, ¶ms, &config); |
7c4a395f VS |
2940 | |
2941 | intel_compute_pipe_wm(crtc, ¶ms, &pipe_wm); | |
2942 | ||
2943 | if (!memcmp(&intel_crtc->wm.active, &pipe_wm, sizeof(pipe_wm))) | |
2944 | return; | |
861f3389 | 2945 | |
7c4a395f | 2946 | intel_crtc->wm.active = pipe_wm; |
861f3389 | 2947 | |
34982fe1 | 2948 | ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_1_2, &max); |
a485bfb8 VS |
2949 | ilk_wm_merge(dev, &max, &lp_wm_1_2); |
2950 | ||
2951 | /* 5/6 split only in single pipe config on IVB+ */ | |
ec98c8d1 VS |
2952 | if (INTEL_INFO(dev)->gen >= 7 && |
2953 | config.num_pipes_active == 1 && config.sprites_enabled) { | |
34982fe1 | 2954 | ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_5_6, &max); |
a485bfb8 | 2955 | ilk_wm_merge(dev, &max, &lp_wm_5_6); |
0362c781 | 2956 | |
198a1e9b | 2957 | best_lp_wm = hsw_find_best_result(dev, &lp_wm_1_2, &lp_wm_5_6); |
861f3389 | 2958 | } else { |
198a1e9b | 2959 | best_lp_wm = &lp_wm_1_2; |
861f3389 PZ |
2960 | } |
2961 | ||
198a1e9b | 2962 | partitioning = (best_lp_wm == &lp_wm_1_2) ? |
77c122bc | 2963 | INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6; |
801bcfff | 2964 | |
609cedef VS |
2965 | hsw_compute_wm_results(dev, best_lp_wm, partitioning, &results); |
2966 | ||
2967 | hsw_write_wm_values(dev_priv, &results); | |
1011d8c4 PZ |
2968 | } |
2969 | ||
adf3d35e VS |
2970 | static void haswell_update_sprite_wm(struct drm_plane *plane, |
2971 | struct drm_crtc *crtc, | |
526682e9 | 2972 | uint32_t sprite_width, int pixel_size, |
bdd57d03 | 2973 | bool enabled, bool scaled) |
526682e9 | 2974 | { |
adf3d35e | 2975 | struct intel_plane *intel_plane = to_intel_plane(plane); |
526682e9 | 2976 | |
adf3d35e VS |
2977 | intel_plane->wm.enabled = enabled; |
2978 | intel_plane->wm.scaled = scaled; | |
2979 | intel_plane->wm.horiz_pixels = sprite_width; | |
2980 | intel_plane->wm.bytes_per_pixel = pixel_size; | |
526682e9 | 2981 | |
46ba614c | 2982 | haswell_update_wm(crtc); |
526682e9 PZ |
2983 | } |
2984 | ||
b445e3b0 ED |
2985 | static bool |
2986 | sandybridge_compute_sprite_wm(struct drm_device *dev, int plane, | |
2987 | uint32_t sprite_width, int pixel_size, | |
2988 | const struct intel_watermark_params *display, | |
2989 | int display_latency_ns, int *sprite_wm) | |
2990 | { | |
2991 | struct drm_crtc *crtc; | |
2992 | int clock; | |
2993 | int entries, tlb_miss; | |
2994 | ||
2995 | crtc = intel_get_crtc_for_plane(dev, plane); | |
3490ea5d | 2996 | if (!intel_crtc_active(crtc)) { |
b445e3b0 ED |
2997 | *sprite_wm = display->guard_size; |
2998 | return false; | |
2999 | } | |
3000 | ||
241bfc38 | 3001 | clock = to_intel_crtc(crtc)->config.adjusted_mode.crtc_clock; |
b445e3b0 ED |
3002 | |
3003 | /* Use the small buffer method to calculate the sprite watermark */ | |
3004 | entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000; | |
3005 | tlb_miss = display->fifo_size*display->cacheline_size - | |
3006 | sprite_width * 8; | |
3007 | if (tlb_miss > 0) | |
3008 | entries += tlb_miss; | |
3009 | entries = DIV_ROUND_UP(entries, display->cacheline_size); | |
3010 | *sprite_wm = entries + display->guard_size; | |
3011 | if (*sprite_wm > (int)display->max_wm) | |
3012 | *sprite_wm = display->max_wm; | |
3013 | ||
3014 | return true; | |
3015 | } | |
3016 | ||
3017 | static bool | |
3018 | sandybridge_compute_sprite_srwm(struct drm_device *dev, int plane, | |
3019 | uint32_t sprite_width, int pixel_size, | |
3020 | const struct intel_watermark_params *display, | |
3021 | int latency_ns, int *sprite_wm) | |
3022 | { | |
3023 | struct drm_crtc *crtc; | |
3024 | unsigned long line_time_us; | |
3025 | int clock; | |
3026 | int line_count, line_size; | |
3027 | int small, large; | |
3028 | int entries; | |
3029 | ||
3030 | if (!latency_ns) { | |
3031 | *sprite_wm = 0; | |
3032 | return false; | |
3033 | } | |
3034 | ||
3035 | crtc = intel_get_crtc_for_plane(dev, plane); | |
241bfc38 | 3036 | clock = to_intel_crtc(crtc)->config.adjusted_mode.crtc_clock; |
b445e3b0 ED |
3037 | if (!clock) { |
3038 | *sprite_wm = 0; | |
3039 | return false; | |
3040 | } | |
3041 | ||
3042 | line_time_us = (sprite_width * 1000) / clock; | |
3043 | if (!line_time_us) { | |
3044 | *sprite_wm = 0; | |
3045 | return false; | |
3046 | } | |
3047 | ||
3048 | line_count = (latency_ns / line_time_us + 1000) / 1000; | |
3049 | line_size = sprite_width * pixel_size; | |
3050 | ||
3051 | /* Use the minimum of the small and large buffer method for primary */ | |
3052 | small = ((clock * pixel_size / 1000) * latency_ns) / 1000; | |
3053 | large = line_count * line_size; | |
3054 | ||
3055 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); | |
3056 | *sprite_wm = entries + display->guard_size; | |
3057 | ||
3058 | return *sprite_wm > 0x3ff ? false : true; | |
3059 | } | |
3060 | ||
adf3d35e VS |
3061 | static void sandybridge_update_sprite_wm(struct drm_plane *plane, |
3062 | struct drm_crtc *crtc, | |
4c4ff43a | 3063 | uint32_t sprite_width, int pixel_size, |
39db4a4d | 3064 | bool enabled, bool scaled) |
b445e3b0 | 3065 | { |
adf3d35e | 3066 | struct drm_device *dev = plane->dev; |
b445e3b0 | 3067 | struct drm_i915_private *dev_priv = dev->dev_private; |
adf3d35e | 3068 | int pipe = to_intel_plane(plane)->pipe; |
b0aea5dc | 3069 | int latency = dev_priv->wm.spr_latency[0] * 100; /* In unit 0.1us */ |
b445e3b0 ED |
3070 | u32 val; |
3071 | int sprite_wm, reg; | |
3072 | int ret; | |
3073 | ||
39db4a4d | 3074 | if (!enabled) |
4c4ff43a PZ |
3075 | return; |
3076 | ||
b445e3b0 ED |
3077 | switch (pipe) { |
3078 | case 0: | |
3079 | reg = WM0_PIPEA_ILK; | |
3080 | break; | |
3081 | case 1: | |
3082 | reg = WM0_PIPEB_ILK; | |
3083 | break; | |
3084 | case 2: | |
3085 | reg = WM0_PIPEC_IVB; | |
3086 | break; | |
3087 | default: | |
3088 | return; /* bad pipe */ | |
3089 | } | |
3090 | ||
3091 | ret = sandybridge_compute_sprite_wm(dev, pipe, sprite_width, pixel_size, | |
3092 | &sandybridge_display_wm_info, | |
3093 | latency, &sprite_wm); | |
3094 | if (!ret) { | |
84f44ce7 VS |
3095 | DRM_DEBUG_KMS("failed to compute sprite wm for pipe %c\n", |
3096 | pipe_name(pipe)); | |
b445e3b0 ED |
3097 | return; |
3098 | } | |
3099 | ||
3100 | val = I915_READ(reg); | |
3101 | val &= ~WM0_PIPE_SPRITE_MASK; | |
3102 | I915_WRITE(reg, val | (sprite_wm << WM0_PIPE_SPRITE_SHIFT)); | |
84f44ce7 | 3103 | DRM_DEBUG_KMS("sprite watermarks For pipe %c - %d\n", pipe_name(pipe), sprite_wm); |
b445e3b0 ED |
3104 | |
3105 | ||
3106 | ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width, | |
3107 | pixel_size, | |
3108 | &sandybridge_display_srwm_info, | |
b0aea5dc | 3109 | dev_priv->wm.spr_latency[1] * 500, |
b445e3b0 ED |
3110 | &sprite_wm); |
3111 | if (!ret) { | |
84f44ce7 VS |
3112 | DRM_DEBUG_KMS("failed to compute sprite lp1 wm on pipe %c\n", |
3113 | pipe_name(pipe)); | |
b445e3b0 ED |
3114 | return; |
3115 | } | |
3116 | I915_WRITE(WM1S_LP_ILK, sprite_wm); | |
3117 | ||
3118 | /* Only IVB has two more LP watermarks for sprite */ | |
3119 | if (!IS_IVYBRIDGE(dev)) | |
3120 | return; | |
3121 | ||
3122 | ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width, | |
3123 | pixel_size, | |
3124 | &sandybridge_display_srwm_info, | |
b0aea5dc | 3125 | dev_priv->wm.spr_latency[2] * 500, |
b445e3b0 ED |
3126 | &sprite_wm); |
3127 | if (!ret) { | |
84f44ce7 VS |
3128 | DRM_DEBUG_KMS("failed to compute sprite lp2 wm on pipe %c\n", |
3129 | pipe_name(pipe)); | |
b445e3b0 ED |
3130 | return; |
3131 | } | |
3132 | I915_WRITE(WM2S_LP_IVB, sprite_wm); | |
3133 | ||
3134 | ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width, | |
3135 | pixel_size, | |
3136 | &sandybridge_display_srwm_info, | |
b0aea5dc | 3137 | dev_priv->wm.spr_latency[3] * 500, |
b445e3b0 ED |
3138 | &sprite_wm); |
3139 | if (!ret) { | |
84f44ce7 VS |
3140 | DRM_DEBUG_KMS("failed to compute sprite lp3 wm on pipe %c\n", |
3141 | pipe_name(pipe)); | |
b445e3b0 ED |
3142 | return; |
3143 | } | |
3144 | I915_WRITE(WM3S_LP_IVB, sprite_wm); | |
3145 | } | |
3146 | ||
243e6a44 VS |
3147 | static void ilk_pipe_wm_get_hw_state(struct drm_crtc *crtc) |
3148 | { | |
3149 | struct drm_device *dev = crtc->dev; | |
3150 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3151 | struct hsw_wm_values *hw = &dev_priv->wm.hw; | |
3152 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3153 | struct intel_pipe_wm *active = &intel_crtc->wm.active; | |
3154 | enum pipe pipe = intel_crtc->pipe; | |
3155 | static const unsigned int wm0_pipe_reg[] = { | |
3156 | [PIPE_A] = WM0_PIPEA_ILK, | |
3157 | [PIPE_B] = WM0_PIPEB_ILK, | |
3158 | [PIPE_C] = WM0_PIPEC_IVB, | |
3159 | }; | |
3160 | ||
3161 | hw->wm_pipe[pipe] = I915_READ(wm0_pipe_reg[pipe]); | |
3162 | hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe)); | |
3163 | ||
3164 | if (intel_crtc_active(crtc)) { | |
3165 | u32 tmp = hw->wm_pipe[pipe]; | |
3166 | ||
3167 | /* | |
3168 | * For active pipes LP0 watermark is marked as | |
3169 | * enabled, and LP1+ watermaks as disabled since | |
3170 | * we can't really reverse compute them in case | |
3171 | * multiple pipes are active. | |
3172 | */ | |
3173 | active->wm[0].enable = true; | |
3174 | active->wm[0].pri_val = (tmp & WM0_PIPE_PLANE_MASK) >> WM0_PIPE_PLANE_SHIFT; | |
3175 | active->wm[0].spr_val = (tmp & WM0_PIPE_SPRITE_MASK) >> WM0_PIPE_SPRITE_SHIFT; | |
3176 | active->wm[0].cur_val = tmp & WM0_PIPE_CURSOR_MASK; | |
3177 | active->linetime = hw->wm_linetime[pipe]; | |
3178 | } else { | |
3179 | int level, max_level = ilk_wm_max_level(dev); | |
3180 | ||
3181 | /* | |
3182 | * For inactive pipes, all watermark levels | |
3183 | * should be marked as enabled but zeroed, | |
3184 | * which is what we'd compute them to. | |
3185 | */ | |
3186 | for (level = 0; level <= max_level; level++) | |
3187 | active->wm[level].enable = true; | |
3188 | } | |
3189 | } | |
3190 | ||
3191 | void ilk_wm_get_hw_state(struct drm_device *dev) | |
3192 | { | |
3193 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3194 | struct hsw_wm_values *hw = &dev_priv->wm.hw; | |
3195 | struct drm_crtc *crtc; | |
3196 | ||
3197 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) | |
3198 | ilk_pipe_wm_get_hw_state(crtc); | |
3199 | ||
3200 | hw->wm_lp[0] = I915_READ(WM1_LP_ILK); | |
3201 | hw->wm_lp[1] = I915_READ(WM2_LP_ILK); | |
3202 | hw->wm_lp[2] = I915_READ(WM3_LP_ILK); | |
3203 | ||
3204 | hw->wm_lp_spr[0] = I915_READ(WM1S_LP_ILK); | |
3205 | hw->wm_lp_spr[1] = I915_READ(WM2S_LP_IVB); | |
3206 | hw->wm_lp_spr[2] = I915_READ(WM3S_LP_IVB); | |
3207 | ||
3208 | hw->partitioning = (I915_READ(WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ? | |
3209 | INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; | |
3210 | ||
3211 | hw->enable_fbc_wm = | |
3212 | !(I915_READ(DISP_ARB_CTL) & DISP_FBC_WM_DIS); | |
3213 | } | |
3214 | ||
b445e3b0 ED |
3215 | /** |
3216 | * intel_update_watermarks - update FIFO watermark values based on current modes | |
3217 | * | |
3218 | * Calculate watermark values for the various WM regs based on current mode | |
3219 | * and plane configuration. | |
3220 | * | |
3221 | * There are several cases to deal with here: | |
3222 | * - normal (i.e. non-self-refresh) | |
3223 | * - self-refresh (SR) mode | |
3224 | * - lines are large relative to FIFO size (buffer can hold up to 2) | |
3225 | * - lines are small relative to FIFO size (buffer can hold more than 2 | |
3226 | * lines), so need to account for TLB latency | |
3227 | * | |
3228 | * The normal calculation is: | |
3229 | * watermark = dotclock * bytes per pixel * latency | |
3230 | * where latency is platform & configuration dependent (we assume pessimal | |
3231 | * values here). | |
3232 | * | |
3233 | * The SR calculation is: | |
3234 | * watermark = (trunc(latency/line time)+1) * surface width * | |
3235 | * bytes per pixel | |
3236 | * where | |
3237 | * line time = htotal / dotclock | |
3238 | * surface width = hdisplay for normal plane and 64 for cursor | |
3239 | * and latency is assumed to be high, as above. | |
3240 | * | |
3241 | * The final value programmed to the register should always be rounded up, | |
3242 | * and include an extra 2 entries to account for clock crossings. | |
3243 | * | |
3244 | * We don't use the sprite, so we can ignore that. And on Crestline we have | |
3245 | * to set the non-SR watermarks to 8. | |
3246 | */ | |
46ba614c | 3247 | void intel_update_watermarks(struct drm_crtc *crtc) |
b445e3b0 | 3248 | { |
46ba614c | 3249 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; |
b445e3b0 ED |
3250 | |
3251 | if (dev_priv->display.update_wm) | |
46ba614c | 3252 | dev_priv->display.update_wm(crtc); |
b445e3b0 ED |
3253 | } |
3254 | ||
adf3d35e VS |
3255 | void intel_update_sprite_watermarks(struct drm_plane *plane, |
3256 | struct drm_crtc *crtc, | |
4c4ff43a | 3257 | uint32_t sprite_width, int pixel_size, |
39db4a4d | 3258 | bool enabled, bool scaled) |
b445e3b0 | 3259 | { |
adf3d35e | 3260 | struct drm_i915_private *dev_priv = plane->dev->dev_private; |
b445e3b0 ED |
3261 | |
3262 | if (dev_priv->display.update_sprite_wm) | |
adf3d35e | 3263 | dev_priv->display.update_sprite_wm(plane, crtc, sprite_width, |
39db4a4d | 3264 | pixel_size, enabled, scaled); |
b445e3b0 ED |
3265 | } |
3266 | ||
2b4e57bd ED |
3267 | static struct drm_i915_gem_object * |
3268 | intel_alloc_context_page(struct drm_device *dev) | |
3269 | { | |
3270 | struct drm_i915_gem_object *ctx; | |
3271 | int ret; | |
3272 | ||
3273 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); | |
3274 | ||
3275 | ctx = i915_gem_alloc_object(dev, 4096); | |
3276 | if (!ctx) { | |
3277 | DRM_DEBUG("failed to alloc power context, RC6 disabled\n"); | |
3278 | return NULL; | |
3279 | } | |
3280 | ||
c37e2204 | 3281 | ret = i915_gem_obj_ggtt_pin(ctx, 4096, true, false); |
2b4e57bd ED |
3282 | if (ret) { |
3283 | DRM_ERROR("failed to pin power context: %d\n", ret); | |
3284 | goto err_unref; | |
3285 | } | |
3286 | ||
3287 | ret = i915_gem_object_set_to_gtt_domain(ctx, 1); | |
3288 | if (ret) { | |
3289 | DRM_ERROR("failed to set-domain on power context: %d\n", ret); | |
3290 | goto err_unpin; | |
3291 | } | |
3292 | ||
3293 | return ctx; | |
3294 | ||
3295 | err_unpin: | |
3296 | i915_gem_object_unpin(ctx); | |
3297 | err_unref: | |
3298 | drm_gem_object_unreference(&ctx->base); | |
2b4e57bd ED |
3299 | return NULL; |
3300 | } | |
3301 | ||
9270388e DV |
3302 | /** |
3303 | * Lock protecting IPS related data structures | |
9270388e DV |
3304 | */ |
3305 | DEFINE_SPINLOCK(mchdev_lock); | |
3306 | ||
3307 | /* Global for IPS driver to get at the current i915 device. Protected by | |
3308 | * mchdev_lock. */ | |
3309 | static struct drm_i915_private *i915_mch_dev; | |
3310 | ||
2b4e57bd ED |
3311 | bool ironlake_set_drps(struct drm_device *dev, u8 val) |
3312 | { | |
3313 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3314 | u16 rgvswctl; | |
3315 | ||
9270388e DV |
3316 | assert_spin_locked(&mchdev_lock); |
3317 | ||
2b4e57bd ED |
3318 | rgvswctl = I915_READ16(MEMSWCTL); |
3319 | if (rgvswctl & MEMCTL_CMD_STS) { | |
3320 | DRM_DEBUG("gpu busy, RCS change rejected\n"); | |
3321 | return false; /* still busy with another command */ | |
3322 | } | |
3323 | ||
3324 | rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | | |
3325 | (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; | |
3326 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
3327 | POSTING_READ16(MEMSWCTL); | |
3328 | ||
3329 | rgvswctl |= MEMCTL_CMD_STS; | |
3330 | I915_WRITE16(MEMSWCTL, rgvswctl); | |
3331 | ||
3332 | return true; | |
3333 | } | |
3334 | ||
8090c6b9 | 3335 | static void ironlake_enable_drps(struct drm_device *dev) |
2b4e57bd ED |
3336 | { |
3337 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3338 | u32 rgvmodectl = I915_READ(MEMMODECTL); | |
3339 | u8 fmax, fmin, fstart, vstart; | |
3340 | ||
9270388e DV |
3341 | spin_lock_irq(&mchdev_lock); |
3342 | ||
2b4e57bd ED |
3343 | /* Enable temp reporting */ |
3344 | I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN); | |
3345 | I915_WRITE16(TSC1, I915_READ(TSC1) | TSE); | |
3346 | ||
3347 | /* 100ms RC evaluation intervals */ | |
3348 | I915_WRITE(RCUPEI, 100000); | |
3349 | I915_WRITE(RCDNEI, 100000); | |
3350 | ||
3351 | /* Set max/min thresholds to 90ms and 80ms respectively */ | |
3352 | I915_WRITE(RCBMAXAVG, 90000); | |
3353 | I915_WRITE(RCBMINAVG, 80000); | |
3354 | ||
3355 | I915_WRITE(MEMIHYST, 1); | |
3356 | ||
3357 | /* Set up min, max, and cur for interrupt handling */ | |
3358 | fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT; | |
3359 | fmin = (rgvmodectl & MEMMODE_FMIN_MASK); | |
3360 | fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >> | |
3361 | MEMMODE_FSTART_SHIFT; | |
3362 | ||
3363 | vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >> | |
3364 | PXVFREQ_PX_SHIFT; | |
3365 | ||
20e4d407 DV |
3366 | dev_priv->ips.fmax = fmax; /* IPS callback will increase this */ |
3367 | dev_priv->ips.fstart = fstart; | |
2b4e57bd | 3368 | |
20e4d407 DV |
3369 | dev_priv->ips.max_delay = fstart; |
3370 | dev_priv->ips.min_delay = fmin; | |
3371 | dev_priv->ips.cur_delay = fstart; | |
2b4e57bd ED |
3372 | |
3373 | DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n", | |
3374 | fmax, fmin, fstart); | |
3375 | ||
3376 | I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN); | |
3377 | ||
3378 | /* | |
3379 | * Interrupts will be enabled in ironlake_irq_postinstall | |
3380 | */ | |
3381 | ||
3382 | I915_WRITE(VIDSTART, vstart); | |
3383 | POSTING_READ(VIDSTART); | |
3384 | ||
3385 | rgvmodectl |= MEMMODE_SWMODE_EN; | |
3386 | I915_WRITE(MEMMODECTL, rgvmodectl); | |
3387 | ||
9270388e | 3388 | if (wait_for_atomic((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10)) |
2b4e57bd | 3389 | DRM_ERROR("stuck trying to change perf mode\n"); |
9270388e | 3390 | mdelay(1); |
2b4e57bd ED |
3391 | |
3392 | ironlake_set_drps(dev, fstart); | |
3393 | ||
20e4d407 | 3394 | dev_priv->ips.last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) + |
2b4e57bd | 3395 | I915_READ(0x112e0); |
20e4d407 DV |
3396 | dev_priv->ips.last_time1 = jiffies_to_msecs(jiffies); |
3397 | dev_priv->ips.last_count2 = I915_READ(0x112f4); | |
3398 | getrawmonotonic(&dev_priv->ips.last_time2); | |
9270388e DV |
3399 | |
3400 | spin_unlock_irq(&mchdev_lock); | |
2b4e57bd ED |
3401 | } |
3402 | ||
8090c6b9 | 3403 | static void ironlake_disable_drps(struct drm_device *dev) |
2b4e57bd ED |
3404 | { |
3405 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9270388e DV |
3406 | u16 rgvswctl; |
3407 | ||
3408 | spin_lock_irq(&mchdev_lock); | |
3409 | ||
3410 | rgvswctl = I915_READ16(MEMSWCTL); | |
2b4e57bd ED |
3411 | |
3412 | /* Ack interrupts, disable EFC interrupt */ | |
3413 | I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN); | |
3414 | I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG); | |
3415 | I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT); | |
3416 | I915_WRITE(DEIIR, DE_PCU_EVENT); | |
3417 | I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT); | |
3418 | ||
3419 | /* Go back to the starting frequency */ | |
20e4d407 | 3420 | ironlake_set_drps(dev, dev_priv->ips.fstart); |
9270388e | 3421 | mdelay(1); |
2b4e57bd ED |
3422 | rgvswctl |= MEMCTL_CMD_STS; |
3423 | I915_WRITE(MEMSWCTL, rgvswctl); | |
9270388e | 3424 | mdelay(1); |
2b4e57bd | 3425 | |
9270388e | 3426 | spin_unlock_irq(&mchdev_lock); |
2b4e57bd ED |
3427 | } |
3428 | ||
acbe9475 DV |
3429 | /* There's a funny hw issue where the hw returns all 0 when reading from |
3430 | * GEN6_RP_INTERRUPT_LIMITS. Hence we always need to compute the desired value | |
3431 | * ourselves, instead of doing a rmw cycle (which might result in us clearing | |
3432 | * all limits and the gpu stuck at whatever frequency it is at atm). | |
3433 | */ | |
6917c7b9 | 3434 | static u32 gen6_rps_limits(struct drm_i915_private *dev_priv, u8 val) |
2b4e57bd | 3435 | { |
7b9e0ae6 | 3436 | u32 limits; |
2b4e57bd | 3437 | |
20b46e59 DV |
3438 | /* Only set the down limit when we've reached the lowest level to avoid |
3439 | * getting more interrupts, otherwise leave this clear. This prevents a | |
3440 | * race in the hw when coming out of rc6: There's a tiny window where | |
3441 | * the hw runs at the minimal clock before selecting the desired | |
3442 | * frequency, if the down threshold expires in that window we will not | |
3443 | * receive a down interrupt. */ | |
6917c7b9 CW |
3444 | limits = dev_priv->rps.max_delay << 24; |
3445 | if (val <= dev_priv->rps.min_delay) | |
c6a828d3 | 3446 | limits |= dev_priv->rps.min_delay << 16; |
20b46e59 DV |
3447 | |
3448 | return limits; | |
3449 | } | |
3450 | ||
dd75fdc8 CW |
3451 | static void gen6_set_rps_thresholds(struct drm_i915_private *dev_priv, u8 val) |
3452 | { | |
3453 | int new_power; | |
3454 | ||
3455 | new_power = dev_priv->rps.power; | |
3456 | switch (dev_priv->rps.power) { | |
3457 | case LOW_POWER: | |
3458 | if (val > dev_priv->rps.rpe_delay + 1 && val > dev_priv->rps.cur_delay) | |
3459 | new_power = BETWEEN; | |
3460 | break; | |
3461 | ||
3462 | case BETWEEN: | |
3463 | if (val <= dev_priv->rps.rpe_delay && val < dev_priv->rps.cur_delay) | |
3464 | new_power = LOW_POWER; | |
3465 | else if (val >= dev_priv->rps.rp0_delay && val > dev_priv->rps.cur_delay) | |
3466 | new_power = HIGH_POWER; | |
3467 | break; | |
3468 | ||
3469 | case HIGH_POWER: | |
3470 | if (val < (dev_priv->rps.rp1_delay + dev_priv->rps.rp0_delay) >> 1 && val < dev_priv->rps.cur_delay) | |
3471 | new_power = BETWEEN; | |
3472 | break; | |
3473 | } | |
3474 | /* Max/min bins are special */ | |
3475 | if (val == dev_priv->rps.min_delay) | |
3476 | new_power = LOW_POWER; | |
3477 | if (val == dev_priv->rps.max_delay) | |
3478 | new_power = HIGH_POWER; | |
3479 | if (new_power == dev_priv->rps.power) | |
3480 | return; | |
3481 | ||
3482 | /* Note the units here are not exactly 1us, but 1280ns. */ | |
3483 | switch (new_power) { | |
3484 | case LOW_POWER: | |
3485 | /* Upclock if more than 95% busy over 16ms */ | |
3486 | I915_WRITE(GEN6_RP_UP_EI, 12500); | |
3487 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 11800); | |
3488 | ||
3489 | /* Downclock if less than 85% busy over 32ms */ | |
3490 | I915_WRITE(GEN6_RP_DOWN_EI, 25000); | |
3491 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 21250); | |
3492 | ||
3493 | I915_WRITE(GEN6_RP_CONTROL, | |
3494 | GEN6_RP_MEDIA_TURBO | | |
3495 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
3496 | GEN6_RP_MEDIA_IS_GFX | | |
3497 | GEN6_RP_ENABLE | | |
3498 | GEN6_RP_UP_BUSY_AVG | | |
3499 | GEN6_RP_DOWN_IDLE_AVG); | |
3500 | break; | |
3501 | ||
3502 | case BETWEEN: | |
3503 | /* Upclock if more than 90% busy over 13ms */ | |
3504 | I915_WRITE(GEN6_RP_UP_EI, 10250); | |
3505 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 9225); | |
3506 | ||
3507 | /* Downclock if less than 75% busy over 32ms */ | |
3508 | I915_WRITE(GEN6_RP_DOWN_EI, 25000); | |
3509 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 18750); | |
3510 | ||
3511 | I915_WRITE(GEN6_RP_CONTROL, | |
3512 | GEN6_RP_MEDIA_TURBO | | |
3513 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
3514 | GEN6_RP_MEDIA_IS_GFX | | |
3515 | GEN6_RP_ENABLE | | |
3516 | GEN6_RP_UP_BUSY_AVG | | |
3517 | GEN6_RP_DOWN_IDLE_AVG); | |
3518 | break; | |
3519 | ||
3520 | case HIGH_POWER: | |
3521 | /* Upclock if more than 85% busy over 10ms */ | |
3522 | I915_WRITE(GEN6_RP_UP_EI, 8000); | |
3523 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 6800); | |
3524 | ||
3525 | /* Downclock if less than 60% busy over 32ms */ | |
3526 | I915_WRITE(GEN6_RP_DOWN_EI, 25000); | |
3527 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 15000); | |
3528 | ||
3529 | I915_WRITE(GEN6_RP_CONTROL, | |
3530 | GEN6_RP_MEDIA_TURBO | | |
3531 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
3532 | GEN6_RP_MEDIA_IS_GFX | | |
3533 | GEN6_RP_ENABLE | | |
3534 | GEN6_RP_UP_BUSY_AVG | | |
3535 | GEN6_RP_DOWN_IDLE_AVG); | |
3536 | break; | |
3537 | } | |
3538 | ||
3539 | dev_priv->rps.power = new_power; | |
3540 | dev_priv->rps.last_adj = 0; | |
3541 | } | |
3542 | ||
20b46e59 DV |
3543 | void gen6_set_rps(struct drm_device *dev, u8 val) |
3544 | { | |
3545 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7b9e0ae6 | 3546 | |
4fc688ce | 3547 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79249636 BW |
3548 | WARN_ON(val > dev_priv->rps.max_delay); |
3549 | WARN_ON(val < dev_priv->rps.min_delay); | |
004777cb | 3550 | |
c6a828d3 | 3551 | if (val == dev_priv->rps.cur_delay) |
7b9e0ae6 CW |
3552 | return; |
3553 | ||
dd75fdc8 CW |
3554 | gen6_set_rps_thresholds(dev_priv, val); |
3555 | ||
92bd1bf0 RV |
3556 | if (IS_HASWELL(dev)) |
3557 | I915_WRITE(GEN6_RPNSWREQ, | |
3558 | HSW_FREQUENCY(val)); | |
3559 | else | |
3560 | I915_WRITE(GEN6_RPNSWREQ, | |
3561 | GEN6_FREQUENCY(val) | | |
3562 | GEN6_OFFSET(0) | | |
3563 | GEN6_AGGRESSIVE_TURBO); | |
7b9e0ae6 CW |
3564 | |
3565 | /* Make sure we continue to get interrupts | |
3566 | * until we hit the minimum or maximum frequencies. | |
3567 | */ | |
6917c7b9 CW |
3568 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, |
3569 | gen6_rps_limits(dev_priv, val)); | |
7b9e0ae6 | 3570 | |
d5570a72 BW |
3571 | POSTING_READ(GEN6_RPNSWREQ); |
3572 | ||
c6a828d3 | 3573 | dev_priv->rps.cur_delay = val; |
be2cde9a DV |
3574 | |
3575 | trace_intel_gpu_freq_change(val * 50); | |
2b4e57bd ED |
3576 | } |
3577 | ||
b29c19b6 CW |
3578 | void gen6_rps_idle(struct drm_i915_private *dev_priv) |
3579 | { | |
3580 | mutex_lock(&dev_priv->rps.hw_lock); | |
c0951f0c CW |
3581 | if (dev_priv->rps.enabled) { |
3582 | if (dev_priv->info->is_valleyview) | |
3583 | valleyview_set_rps(dev_priv->dev, dev_priv->rps.min_delay); | |
3584 | else | |
3585 | gen6_set_rps(dev_priv->dev, dev_priv->rps.min_delay); | |
3586 | dev_priv->rps.last_adj = 0; | |
3587 | } | |
b29c19b6 CW |
3588 | mutex_unlock(&dev_priv->rps.hw_lock); |
3589 | } | |
3590 | ||
3591 | void gen6_rps_boost(struct drm_i915_private *dev_priv) | |
3592 | { | |
3593 | mutex_lock(&dev_priv->rps.hw_lock); | |
c0951f0c CW |
3594 | if (dev_priv->rps.enabled) { |
3595 | if (dev_priv->info->is_valleyview) | |
3596 | valleyview_set_rps(dev_priv->dev, dev_priv->rps.max_delay); | |
3597 | else | |
3598 | gen6_set_rps(dev_priv->dev, dev_priv->rps.max_delay); | |
3599 | dev_priv->rps.last_adj = 0; | |
3600 | } | |
b29c19b6 CW |
3601 | mutex_unlock(&dev_priv->rps.hw_lock); |
3602 | } | |
3603 | ||
0a073b84 JB |
3604 | void valleyview_set_rps(struct drm_device *dev, u8 val) |
3605 | { | |
3606 | struct drm_i915_private *dev_priv = dev->dev_private; | |
7a67092a | 3607 | |
0a073b84 JB |
3608 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
3609 | WARN_ON(val > dev_priv->rps.max_delay); | |
3610 | WARN_ON(val < dev_priv->rps.min_delay); | |
3611 | ||
73008b98 | 3612 | DRM_DEBUG_DRIVER("GPU freq request from %d MHz (%u) to %d MHz (%u)\n", |
2ec3815f | 3613 | vlv_gpu_freq(dev_priv, dev_priv->rps.cur_delay), |
73008b98 | 3614 | dev_priv->rps.cur_delay, |
2ec3815f | 3615 | vlv_gpu_freq(dev_priv, val), val); |
0a073b84 JB |
3616 | |
3617 | if (val == dev_priv->rps.cur_delay) | |
3618 | return; | |
3619 | ||
ae99258f | 3620 | vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val); |
0a073b84 | 3621 | |
80814ae4 | 3622 | dev_priv->rps.cur_delay = val; |
0a073b84 | 3623 | |
2ec3815f | 3624 | trace_intel_gpu_freq_change(vlv_gpu_freq(dev_priv, val)); |
0a073b84 JB |
3625 | } |
3626 | ||
44fc7d5c | 3627 | static void gen6_disable_rps_interrupts(struct drm_device *dev) |
2b4e57bd ED |
3628 | { |
3629 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3630 | ||
2b4e57bd | 3631 | I915_WRITE(GEN6_PMINTRMSK, 0xffffffff); |
4848405c | 3632 | I915_WRITE(GEN6_PMIER, I915_READ(GEN6_PMIER) & ~GEN6_PM_RPS_EVENTS); |
2b4e57bd ED |
3633 | /* Complete PM interrupt masking here doesn't race with the rps work |
3634 | * item again unmasking PM interrupts because that is using a different | |
3635 | * register (PMIMR) to mask PM interrupts. The only risk is in leaving | |
3636 | * stale bits in PMIIR and PMIMR which gen6_enable_rps will clean up. */ | |
3637 | ||
59cdb63d | 3638 | spin_lock_irq(&dev_priv->irq_lock); |
c6a828d3 | 3639 | dev_priv->rps.pm_iir = 0; |
59cdb63d | 3640 | spin_unlock_irq(&dev_priv->irq_lock); |
2b4e57bd | 3641 | |
4848405c | 3642 | I915_WRITE(GEN6_PMIIR, GEN6_PM_RPS_EVENTS); |
2b4e57bd ED |
3643 | } |
3644 | ||
44fc7d5c | 3645 | static void gen6_disable_rps(struct drm_device *dev) |
d20d4f0c JB |
3646 | { |
3647 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3648 | ||
3649 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
44fc7d5c | 3650 | I915_WRITE(GEN6_RPNSWREQ, 1 << 31); |
d20d4f0c | 3651 | |
44fc7d5c DV |
3652 | gen6_disable_rps_interrupts(dev); |
3653 | } | |
3654 | ||
3655 | static void valleyview_disable_rps(struct drm_device *dev) | |
3656 | { | |
3657 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3658 | ||
3659 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
d20d4f0c | 3660 | |
44fc7d5c | 3661 | gen6_disable_rps_interrupts(dev); |
c9cddffc JB |
3662 | |
3663 | if (dev_priv->vlv_pctx) { | |
3664 | drm_gem_object_unreference(&dev_priv->vlv_pctx->base); | |
3665 | dev_priv->vlv_pctx = NULL; | |
3666 | } | |
d20d4f0c JB |
3667 | } |
3668 | ||
dc39fff7 BW |
3669 | static void intel_print_rc6_info(struct drm_device *dev, u32 mode) |
3670 | { | |
3671 | if (IS_GEN6(dev)) | |
3672 | DRM_DEBUG_DRIVER("Sandybridge: deep RC6 disabled\n"); | |
3673 | ||
3674 | if (IS_HASWELL(dev)) | |
3675 | DRM_DEBUG_DRIVER("Haswell: only RC6 available\n"); | |
3676 | ||
3677 | DRM_INFO("Enabling RC6 states: RC6 %s, RC6p %s, RC6pp %s\n", | |
3678 | (mode & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off", | |
3679 | (mode & GEN6_RC_CTL_RC6p_ENABLE) ? "on" : "off", | |
3680 | (mode & GEN6_RC_CTL_RC6pp_ENABLE) ? "on" : "off"); | |
3681 | } | |
3682 | ||
2b4e57bd ED |
3683 | int intel_enable_rc6(const struct drm_device *dev) |
3684 | { | |
eb4926e4 DL |
3685 | /* No RC6 before Ironlake */ |
3686 | if (INTEL_INFO(dev)->gen < 5) | |
3687 | return 0; | |
3688 | ||
456470eb | 3689 | /* Respect the kernel parameter if it is set */ |
2b4e57bd ED |
3690 | if (i915_enable_rc6 >= 0) |
3691 | return i915_enable_rc6; | |
3692 | ||
6567d748 CW |
3693 | /* Disable RC6 on Ironlake */ |
3694 | if (INTEL_INFO(dev)->gen == 5) | |
3695 | return 0; | |
2b4e57bd | 3696 | |
dc39fff7 | 3697 | if (IS_HASWELL(dev)) |
4a637c2c | 3698 | return INTEL_RC6_ENABLE; |
2b4e57bd | 3699 | |
456470eb | 3700 | /* snb/ivb have more than one rc6 state. */ |
dc39fff7 | 3701 | if (INTEL_INFO(dev)->gen == 6) |
2b4e57bd | 3702 | return INTEL_RC6_ENABLE; |
456470eb | 3703 | |
2b4e57bd ED |
3704 | return (INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE); |
3705 | } | |
3706 | ||
44fc7d5c DV |
3707 | static void gen6_enable_rps_interrupts(struct drm_device *dev) |
3708 | { | |
3709 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a9c1f90c | 3710 | u32 enabled_intrs; |
44fc7d5c DV |
3711 | |
3712 | spin_lock_irq(&dev_priv->irq_lock); | |
a0b3335a | 3713 | WARN_ON(dev_priv->rps.pm_iir); |
edbfdb45 | 3714 | snb_enable_pm_irq(dev_priv, GEN6_PM_RPS_EVENTS); |
44fc7d5c DV |
3715 | I915_WRITE(GEN6_PMIIR, GEN6_PM_RPS_EVENTS); |
3716 | spin_unlock_irq(&dev_priv->irq_lock); | |
a9c1f90c | 3717 | |
fd547d25 | 3718 | /* only unmask PM interrupts we need. Mask all others. */ |
a9c1f90c MK |
3719 | enabled_intrs = GEN6_PM_RPS_EVENTS; |
3720 | ||
3721 | /* IVB and SNB hard hangs on looping batchbuffer | |
3722 | * if GEN6_PM_UP_EI_EXPIRED is masked. | |
3723 | */ | |
3724 | if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev)) | |
3725 | enabled_intrs |= GEN6_PM_RP_UP_EI_EXPIRED; | |
3726 | ||
3727 | I915_WRITE(GEN6_PMINTRMSK, ~enabled_intrs); | |
44fc7d5c DV |
3728 | } |
3729 | ||
6edee7f3 BW |
3730 | static void gen8_enable_rps(struct drm_device *dev) |
3731 | { | |
3732 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3733 | struct intel_ring_buffer *ring; | |
3734 | uint32_t rc6_mask = 0, rp_state_cap; | |
3735 | int unused; | |
3736 | ||
3737 | /* 1a: Software RC state - RC0 */ | |
3738 | I915_WRITE(GEN6_RC_STATE, 0); | |
3739 | ||
3740 | /* 1c & 1d: Get forcewake during program sequence. Although the driver | |
3741 | * hasn't enabled a state yet where we need forcewake, BIOS may have.*/ | |
3742 | gen6_gt_force_wake_get(dev_priv); | |
3743 | ||
3744 | /* 2a: Disable RC states. */ | |
3745 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
3746 | ||
3747 | rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); | |
3748 | ||
3749 | /* 2b: Program RC6 thresholds.*/ | |
3750 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16); | |
3751 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ | |
3752 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ | |
3753 | for_each_ring(ring, dev_priv, unused) | |
3754 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
3755 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
3756 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); /* 50/125ms per EI */ | |
3757 | ||
3758 | /* 3: Enable RC6 */ | |
3759 | if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE) | |
3760 | rc6_mask = GEN6_RC_CTL_RC6_ENABLE; | |
3761 | DRM_INFO("RC6 %s\n", (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off"); | |
3762 | I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | | |
3763 | GEN6_RC_CTL_EI_MODE(1) | | |
3764 | rc6_mask); | |
3765 | ||
3766 | /* 4 Program defaults and thresholds for RPS*/ | |
3767 | I915_WRITE(GEN6_RPNSWREQ, HSW_FREQUENCY(10)); /* Request 500 MHz */ | |
3768 | I915_WRITE(GEN6_RC_VIDEO_FREQ, HSW_FREQUENCY(12)); /* Request 600 MHz */ | |
3769 | /* NB: Docs say 1s, and 1000000 - which aren't equivalent */ | |
3770 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 100000000 / 128); /* 1 second timeout */ | |
3771 | ||
3772 | /* Docs recommend 900MHz, and 300 MHz respectively */ | |
3773 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, | |
3774 | dev_priv->rps.max_delay << 24 | | |
3775 | dev_priv->rps.min_delay << 16); | |
3776 | ||
3777 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 7600000 / 128); /* 76ms busyness per EI, 90% */ | |
3778 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 31300000 / 128); /* 313ms busyness per EI, 70%*/ | |
3779 | I915_WRITE(GEN6_RP_UP_EI, 66000); /* 84.48ms, XXX: random? */ | |
3780 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); /* 448ms, XXX: random? */ | |
3781 | ||
3782 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
3783 | ||
3784 | /* 5: Enable RPS */ | |
3785 | I915_WRITE(GEN6_RP_CONTROL, | |
3786 | GEN6_RP_MEDIA_TURBO | | |
3787 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
3788 | GEN6_RP_MEDIA_IS_GFX | | |
3789 | GEN6_RP_ENABLE | | |
3790 | GEN6_RP_UP_BUSY_AVG | | |
3791 | GEN6_RP_DOWN_IDLE_AVG); | |
3792 | ||
3793 | /* 6: Ring frequency + overclocking (our driver does this later */ | |
3794 | ||
3795 | gen6_set_rps(dev, (I915_READ(GEN6_GT_PERF_STATUS) & 0xff00) >> 8); | |
3796 | ||
3797 | gen6_enable_rps_interrupts(dev); | |
3798 | ||
3799 | gen6_gt_force_wake_put(dev_priv); | |
3800 | } | |
3801 | ||
79f5b2c7 | 3802 | static void gen6_enable_rps(struct drm_device *dev) |
2b4e57bd | 3803 | { |
79f5b2c7 | 3804 | struct drm_i915_private *dev_priv = dev->dev_private; |
b4519513 | 3805 | struct intel_ring_buffer *ring; |
7b9e0ae6 CW |
3806 | u32 rp_state_cap; |
3807 | u32 gt_perf_status; | |
31643d54 | 3808 | u32 rc6vids, pcu_mbox, rc6_mask = 0; |
2b4e57bd | 3809 | u32 gtfifodbg; |
2b4e57bd | 3810 | int rc6_mode; |
42c0526c | 3811 | int i, ret; |
2b4e57bd | 3812 | |
4fc688ce | 3813 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 3814 | |
2b4e57bd ED |
3815 | /* Here begins a magic sequence of register writes to enable |
3816 | * auto-downclocking. | |
3817 | * | |
3818 | * Perhaps there might be some value in exposing these to | |
3819 | * userspace... | |
3820 | */ | |
3821 | I915_WRITE(GEN6_RC_STATE, 0); | |
2b4e57bd ED |
3822 | |
3823 | /* Clear the DBG now so we don't confuse earlier errors */ | |
3824 | if ((gtfifodbg = I915_READ(GTFIFODBG))) { | |
3825 | DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg); | |
3826 | I915_WRITE(GTFIFODBG, gtfifodbg); | |
3827 | } | |
3828 | ||
3829 | gen6_gt_force_wake_get(dev_priv); | |
3830 | ||
7b9e0ae6 CW |
3831 | rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); |
3832 | gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS); | |
3833 | ||
31c77388 BW |
3834 | /* In units of 50MHz */ |
3835 | dev_priv->rps.hw_max = dev_priv->rps.max_delay = rp_state_cap & 0xff; | |
dd75fdc8 CW |
3836 | dev_priv->rps.min_delay = (rp_state_cap >> 16) & 0xff; |
3837 | dev_priv->rps.rp1_delay = (rp_state_cap >> 8) & 0xff; | |
3838 | dev_priv->rps.rp0_delay = (rp_state_cap >> 0) & 0xff; | |
3839 | dev_priv->rps.rpe_delay = dev_priv->rps.rp1_delay; | |
c6a828d3 | 3840 | dev_priv->rps.cur_delay = 0; |
7b9e0ae6 | 3841 | |
2b4e57bd ED |
3842 | /* disable the counters and set deterministic thresholds */ |
3843 | I915_WRITE(GEN6_RC_CONTROL, 0); | |
3844 | ||
3845 | I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16); | |
3846 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30); | |
3847 | I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30); | |
3848 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
3849 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
3850 | ||
b4519513 CW |
3851 | for_each_ring(ring, dev_priv, i) |
3852 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
2b4e57bd ED |
3853 | |
3854 | I915_WRITE(GEN6_RC_SLEEP, 0); | |
3855 | I915_WRITE(GEN6_RC1e_THRESHOLD, 1000); | |
351aa566 SM |
3856 | if (INTEL_INFO(dev)->gen <= 6 || IS_IVYBRIDGE(dev)) |
3857 | I915_WRITE(GEN6_RC6_THRESHOLD, 125000); | |
3858 | else | |
3859 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); | |
0920a487 | 3860 | I915_WRITE(GEN6_RC6p_THRESHOLD, 150000); |
2b4e57bd ED |
3861 | I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */ |
3862 | ||
5a7dc92a | 3863 | /* Check if we are enabling RC6 */ |
2b4e57bd ED |
3864 | rc6_mode = intel_enable_rc6(dev_priv->dev); |
3865 | if (rc6_mode & INTEL_RC6_ENABLE) | |
3866 | rc6_mask |= GEN6_RC_CTL_RC6_ENABLE; | |
3867 | ||
5a7dc92a ED |
3868 | /* We don't use those on Haswell */ |
3869 | if (!IS_HASWELL(dev)) { | |
3870 | if (rc6_mode & INTEL_RC6p_ENABLE) | |
3871 | rc6_mask |= GEN6_RC_CTL_RC6p_ENABLE; | |
2b4e57bd | 3872 | |
5a7dc92a ED |
3873 | if (rc6_mode & INTEL_RC6pp_ENABLE) |
3874 | rc6_mask |= GEN6_RC_CTL_RC6pp_ENABLE; | |
3875 | } | |
2b4e57bd | 3876 | |
dc39fff7 | 3877 | intel_print_rc6_info(dev, rc6_mask); |
2b4e57bd ED |
3878 | |
3879 | I915_WRITE(GEN6_RC_CONTROL, | |
3880 | rc6_mask | | |
3881 | GEN6_RC_CTL_EI_MODE(1) | | |
3882 | GEN6_RC_CTL_HW_ENABLE); | |
3883 | ||
dd75fdc8 CW |
3884 | /* Power down if completely idle for over 50ms */ |
3885 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 50000); | |
2b4e57bd | 3886 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); |
2b4e57bd | 3887 | |
42c0526c | 3888 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_MIN_FREQ_TABLE, 0); |
988b36e5 | 3889 | if (!ret) { |
42c0526c BW |
3890 | pcu_mbox = 0; |
3891 | ret = sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS, &pcu_mbox); | |
a2b3fc01 | 3892 | if (!ret && (pcu_mbox & (1<<31))) { /* OC supported */ |
10e08497 | 3893 | DRM_DEBUG_DRIVER("Overclocking supported. Max: %dMHz, Overclock max: %dMHz\n", |
a2b3fc01 BW |
3894 | (dev_priv->rps.max_delay & 0xff) * 50, |
3895 | (pcu_mbox & 0xff) * 50); | |
31c77388 | 3896 | dev_priv->rps.hw_max = pcu_mbox & 0xff; |
42c0526c BW |
3897 | } |
3898 | } else { | |
3899 | DRM_DEBUG_DRIVER("Failed to set the min frequency\n"); | |
2b4e57bd ED |
3900 | } |
3901 | ||
dd75fdc8 CW |
3902 | dev_priv->rps.power = HIGH_POWER; /* force a reset */ |
3903 | gen6_set_rps(dev_priv->dev, dev_priv->rps.min_delay); | |
2b4e57bd | 3904 | |
44fc7d5c | 3905 | gen6_enable_rps_interrupts(dev); |
2b4e57bd | 3906 | |
31643d54 BW |
3907 | rc6vids = 0; |
3908 | ret = sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids); | |
3909 | if (IS_GEN6(dev) && ret) { | |
3910 | DRM_DEBUG_DRIVER("Couldn't check for BIOS workaround\n"); | |
3911 | } else if (IS_GEN6(dev) && (GEN6_DECODE_RC6_VID(rc6vids & 0xff) < 450)) { | |
3912 | DRM_DEBUG_DRIVER("You should update your BIOS. Correcting minimum rc6 voltage (%dmV->%dmV)\n", | |
3913 | GEN6_DECODE_RC6_VID(rc6vids & 0xff), 450); | |
3914 | rc6vids &= 0xffff00; | |
3915 | rc6vids |= GEN6_ENCODE_RC6_VID(450); | |
3916 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_RC6VIDS, rc6vids); | |
3917 | if (ret) | |
3918 | DRM_ERROR("Couldn't fix incorrect rc6 voltage\n"); | |
3919 | } | |
3920 | ||
2b4e57bd | 3921 | gen6_gt_force_wake_put(dev_priv); |
2b4e57bd ED |
3922 | } |
3923 | ||
c67a470b | 3924 | void gen6_update_ring_freq(struct drm_device *dev) |
2b4e57bd | 3925 | { |
79f5b2c7 | 3926 | struct drm_i915_private *dev_priv = dev->dev_private; |
2b4e57bd | 3927 | int min_freq = 15; |
3ebecd07 CW |
3928 | unsigned int gpu_freq; |
3929 | unsigned int max_ia_freq, min_ring_freq; | |
2b4e57bd | 3930 | int scaling_factor = 180; |
eda79642 | 3931 | struct cpufreq_policy *policy; |
2b4e57bd | 3932 | |
4fc688ce | 3933 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
79f5b2c7 | 3934 | |
eda79642 BW |
3935 | policy = cpufreq_cpu_get(0); |
3936 | if (policy) { | |
3937 | max_ia_freq = policy->cpuinfo.max_freq; | |
3938 | cpufreq_cpu_put(policy); | |
3939 | } else { | |
3940 | /* | |
3941 | * Default to measured freq if none found, PCU will ensure we | |
3942 | * don't go over | |
3943 | */ | |
2b4e57bd | 3944 | max_ia_freq = tsc_khz; |
eda79642 | 3945 | } |
2b4e57bd ED |
3946 | |
3947 | /* Convert from kHz to MHz */ | |
3948 | max_ia_freq /= 1000; | |
3949 | ||
153b4b95 | 3950 | min_ring_freq = I915_READ(DCLK) & 0xf; |
f6aca45c BW |
3951 | /* convert DDR frequency from units of 266.6MHz to bandwidth */ |
3952 | min_ring_freq = mult_frac(min_ring_freq, 8, 3); | |
3ebecd07 | 3953 | |
2b4e57bd ED |
3954 | /* |
3955 | * For each potential GPU frequency, load a ring frequency we'd like | |
3956 | * to use for memory access. We do this by specifying the IA frequency | |
3957 | * the PCU should use as a reference to determine the ring frequency. | |
3958 | */ | |
c6a828d3 | 3959 | for (gpu_freq = dev_priv->rps.max_delay; gpu_freq >= dev_priv->rps.min_delay; |
2b4e57bd | 3960 | gpu_freq--) { |
c6a828d3 | 3961 | int diff = dev_priv->rps.max_delay - gpu_freq; |
3ebecd07 CW |
3962 | unsigned int ia_freq = 0, ring_freq = 0; |
3963 | ||
46c764d4 BW |
3964 | if (INTEL_INFO(dev)->gen >= 8) { |
3965 | /* max(2 * GT, DDR). NB: GT is 50MHz units */ | |
3966 | ring_freq = max(min_ring_freq, gpu_freq); | |
3967 | } else if (IS_HASWELL(dev)) { | |
f6aca45c | 3968 | ring_freq = mult_frac(gpu_freq, 5, 4); |
3ebecd07 CW |
3969 | ring_freq = max(min_ring_freq, ring_freq); |
3970 | /* leave ia_freq as the default, chosen by cpufreq */ | |
3971 | } else { | |
3972 | /* On older processors, there is no separate ring | |
3973 | * clock domain, so in order to boost the bandwidth | |
3974 | * of the ring, we need to upclock the CPU (ia_freq). | |
3975 | * | |
3976 | * For GPU frequencies less than 750MHz, | |
3977 | * just use the lowest ring freq. | |
3978 | */ | |
3979 | if (gpu_freq < min_freq) | |
3980 | ia_freq = 800; | |
3981 | else | |
3982 | ia_freq = max_ia_freq - ((diff * scaling_factor) / 2); | |
3983 | ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100); | |
3984 | } | |
2b4e57bd | 3985 | |
42c0526c BW |
3986 | sandybridge_pcode_write(dev_priv, |
3987 | GEN6_PCODE_WRITE_MIN_FREQ_TABLE, | |
3ebecd07 CW |
3988 | ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT | |
3989 | ring_freq << GEN6_PCODE_FREQ_RING_RATIO_SHIFT | | |
3990 | gpu_freq); | |
2b4e57bd | 3991 | } |
2b4e57bd ED |
3992 | } |
3993 | ||
0a073b84 JB |
3994 | int valleyview_rps_max_freq(struct drm_i915_private *dev_priv) |
3995 | { | |
3996 | u32 val, rp0; | |
3997 | ||
64936258 | 3998 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE); |
0a073b84 JB |
3999 | |
4000 | rp0 = (val & FB_GFX_MAX_FREQ_FUSE_MASK) >> FB_GFX_MAX_FREQ_FUSE_SHIFT; | |
4001 | /* Clamp to max */ | |
4002 | rp0 = min_t(u32, rp0, 0xea); | |
4003 | ||
4004 | return rp0; | |
4005 | } | |
4006 | ||
4007 | static int valleyview_rps_rpe_freq(struct drm_i915_private *dev_priv) | |
4008 | { | |
4009 | u32 val, rpe; | |
4010 | ||
64936258 | 4011 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_LO); |
0a073b84 | 4012 | rpe = (val & FB_FMAX_VMIN_FREQ_LO_MASK) >> FB_FMAX_VMIN_FREQ_LO_SHIFT; |
64936258 | 4013 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_HI); |
0a073b84 JB |
4014 | rpe |= (val & FB_FMAX_VMIN_FREQ_HI_MASK) << 5; |
4015 | ||
4016 | return rpe; | |
4017 | } | |
4018 | ||
4019 | int valleyview_rps_min_freq(struct drm_i915_private *dev_priv) | |
4020 | { | |
64936258 | 4021 | return vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM) & 0xff; |
0a073b84 JB |
4022 | } |
4023 | ||
c9cddffc JB |
4024 | static void valleyview_setup_pctx(struct drm_device *dev) |
4025 | { | |
4026 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4027 | struct drm_i915_gem_object *pctx; | |
4028 | unsigned long pctx_paddr; | |
4029 | u32 pcbr; | |
4030 | int pctx_size = 24*1024; | |
4031 | ||
4032 | pcbr = I915_READ(VLV_PCBR); | |
4033 | if (pcbr) { | |
4034 | /* BIOS set it up already, grab the pre-alloc'd space */ | |
4035 | int pcbr_offset; | |
4036 | ||
4037 | pcbr_offset = (pcbr & (~4095)) - dev_priv->mm.stolen_base; | |
4038 | pctx = i915_gem_object_create_stolen_for_preallocated(dev_priv->dev, | |
4039 | pcbr_offset, | |
190d6cd5 | 4040 | I915_GTT_OFFSET_NONE, |
c9cddffc JB |
4041 | pctx_size); |
4042 | goto out; | |
4043 | } | |
4044 | ||
4045 | /* | |
4046 | * From the Gunit register HAS: | |
4047 | * The Gfx driver is expected to program this register and ensure | |
4048 | * proper allocation within Gfx stolen memory. For example, this | |
4049 | * register should be programmed such than the PCBR range does not | |
4050 | * overlap with other ranges, such as the frame buffer, protected | |
4051 | * memory, or any other relevant ranges. | |
4052 | */ | |
4053 | pctx = i915_gem_object_create_stolen(dev, pctx_size); | |
4054 | if (!pctx) { | |
4055 | DRM_DEBUG("not enough stolen space for PCTX, disabling\n"); | |
4056 | return; | |
4057 | } | |
4058 | ||
4059 | pctx_paddr = dev_priv->mm.stolen_base + pctx->stolen->start; | |
4060 | I915_WRITE(VLV_PCBR, pctx_paddr); | |
4061 | ||
4062 | out: | |
4063 | dev_priv->vlv_pctx = pctx; | |
4064 | } | |
4065 | ||
0a073b84 JB |
4066 | static void valleyview_enable_rps(struct drm_device *dev) |
4067 | { | |
4068 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4069 | struct intel_ring_buffer *ring; | |
a2b23fe0 | 4070 | u32 gtfifodbg, val, rc6_mode = 0; |
0a073b84 JB |
4071 | int i; |
4072 | ||
4073 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); | |
4074 | ||
4075 | if ((gtfifodbg = I915_READ(GTFIFODBG))) { | |
f7d85c1e JB |
4076 | DRM_DEBUG_DRIVER("GT fifo had a previous error %x\n", |
4077 | gtfifodbg); | |
0a073b84 JB |
4078 | I915_WRITE(GTFIFODBG, gtfifodbg); |
4079 | } | |
4080 | ||
c9cddffc JB |
4081 | valleyview_setup_pctx(dev); |
4082 | ||
0a073b84 JB |
4083 | gen6_gt_force_wake_get(dev_priv); |
4084 | ||
4085 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); | |
4086 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); | |
4087 | I915_WRITE(GEN6_RP_UP_EI, 66000); | |
4088 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); | |
4089 | ||
4090 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); | |
4091 | ||
4092 | I915_WRITE(GEN6_RP_CONTROL, | |
4093 | GEN6_RP_MEDIA_TURBO | | |
4094 | GEN6_RP_MEDIA_HW_NORMAL_MODE | | |
4095 | GEN6_RP_MEDIA_IS_GFX | | |
4096 | GEN6_RP_ENABLE | | |
4097 | GEN6_RP_UP_BUSY_AVG | | |
4098 | GEN6_RP_DOWN_IDLE_CONT); | |
4099 | ||
4100 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 0x00280000); | |
4101 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); | |
4102 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); | |
4103 | ||
4104 | for_each_ring(ring, dev_priv, i) | |
4105 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); | |
4106 | ||
4107 | I915_WRITE(GEN6_RC6_THRESHOLD, 0xc350); | |
4108 | ||
4109 | /* allows RC6 residency counter to work */ | |
49798eb2 JB |
4110 | I915_WRITE(VLV_COUNTER_CONTROL, |
4111 | _MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH | | |
4112 | VLV_MEDIA_RC6_COUNT_EN | | |
4113 | VLV_RENDER_RC6_COUNT_EN)); | |
a2b23fe0 JB |
4114 | if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE) |
4115 | rc6_mode = GEN7_RC_CTL_TO_MODE; | |
dc39fff7 BW |
4116 | |
4117 | intel_print_rc6_info(dev, rc6_mode); | |
4118 | ||
a2b23fe0 | 4119 | I915_WRITE(GEN6_RC_CONTROL, rc6_mode); |
0a073b84 | 4120 | |
64936258 | 4121 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
0a073b84 JB |
4122 | |
4123 | DRM_DEBUG_DRIVER("GPLL enabled? %s\n", val & 0x10 ? "yes" : "no"); | |
4124 | DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val); | |
4125 | ||
0a073b84 | 4126 | dev_priv->rps.cur_delay = (val >> 8) & 0xff; |
73008b98 | 4127 | DRM_DEBUG_DRIVER("current GPU freq: %d MHz (%u)\n", |
2ec3815f | 4128 | vlv_gpu_freq(dev_priv, dev_priv->rps.cur_delay), |
73008b98 | 4129 | dev_priv->rps.cur_delay); |
0a073b84 JB |
4130 | |
4131 | dev_priv->rps.max_delay = valleyview_rps_max_freq(dev_priv); | |
4132 | dev_priv->rps.hw_max = dev_priv->rps.max_delay; | |
73008b98 | 4133 | DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", |
2ec3815f | 4134 | vlv_gpu_freq(dev_priv, dev_priv->rps.max_delay), |
73008b98 | 4135 | dev_priv->rps.max_delay); |
0a073b84 | 4136 | |
73008b98 VS |
4137 | dev_priv->rps.rpe_delay = valleyview_rps_rpe_freq(dev_priv); |
4138 | DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", | |
2ec3815f | 4139 | vlv_gpu_freq(dev_priv, dev_priv->rps.rpe_delay), |
73008b98 | 4140 | dev_priv->rps.rpe_delay); |
0a073b84 | 4141 | |
73008b98 VS |
4142 | dev_priv->rps.min_delay = valleyview_rps_min_freq(dev_priv); |
4143 | DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", | |
2ec3815f | 4144 | vlv_gpu_freq(dev_priv, dev_priv->rps.min_delay), |
73008b98 | 4145 | dev_priv->rps.min_delay); |
0a073b84 | 4146 | |
73008b98 | 4147 | DRM_DEBUG_DRIVER("setting GPU freq to %d MHz (%u)\n", |
2ec3815f | 4148 | vlv_gpu_freq(dev_priv, dev_priv->rps.rpe_delay), |
73008b98 | 4149 | dev_priv->rps.rpe_delay); |
0a073b84 | 4150 | |
73008b98 | 4151 | valleyview_set_rps(dev_priv->dev, dev_priv->rps.rpe_delay); |
0a073b84 | 4152 | |
44fc7d5c | 4153 | gen6_enable_rps_interrupts(dev); |
0a073b84 JB |
4154 | |
4155 | gen6_gt_force_wake_put(dev_priv); | |
4156 | } | |
4157 | ||
930ebb46 | 4158 | void ironlake_teardown_rc6(struct drm_device *dev) |
2b4e57bd ED |
4159 | { |
4160 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4161 | ||
3e373948 DV |
4162 | if (dev_priv->ips.renderctx) { |
4163 | i915_gem_object_unpin(dev_priv->ips.renderctx); | |
4164 | drm_gem_object_unreference(&dev_priv->ips.renderctx->base); | |
4165 | dev_priv->ips.renderctx = NULL; | |
2b4e57bd ED |
4166 | } |
4167 | ||
3e373948 DV |
4168 | if (dev_priv->ips.pwrctx) { |
4169 | i915_gem_object_unpin(dev_priv->ips.pwrctx); | |
4170 | drm_gem_object_unreference(&dev_priv->ips.pwrctx->base); | |
4171 | dev_priv->ips.pwrctx = NULL; | |
2b4e57bd ED |
4172 | } |
4173 | } | |
4174 | ||
930ebb46 | 4175 | static void ironlake_disable_rc6(struct drm_device *dev) |
2b4e57bd ED |
4176 | { |
4177 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4178 | ||
4179 | if (I915_READ(PWRCTXA)) { | |
4180 | /* Wake the GPU, prevent RC6, then restore RSTDBYCTL */ | |
4181 | I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) | RCX_SW_EXIT); | |
4182 | wait_for(((I915_READ(RSTDBYCTL) & RSX_STATUS_MASK) == RSX_STATUS_ON), | |
4183 | 50); | |
4184 | ||
4185 | I915_WRITE(PWRCTXA, 0); | |
4186 | POSTING_READ(PWRCTXA); | |
4187 | ||
4188 | I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT); | |
4189 | POSTING_READ(RSTDBYCTL); | |
4190 | } | |
2b4e57bd ED |
4191 | } |
4192 | ||
4193 | static int ironlake_setup_rc6(struct drm_device *dev) | |
4194 | { | |
4195 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4196 | ||
3e373948 DV |
4197 | if (dev_priv->ips.renderctx == NULL) |
4198 | dev_priv->ips.renderctx = intel_alloc_context_page(dev); | |
4199 | if (!dev_priv->ips.renderctx) | |
2b4e57bd ED |
4200 | return -ENOMEM; |
4201 | ||
3e373948 DV |
4202 | if (dev_priv->ips.pwrctx == NULL) |
4203 | dev_priv->ips.pwrctx = intel_alloc_context_page(dev); | |
4204 | if (!dev_priv->ips.pwrctx) { | |
2b4e57bd ED |
4205 | ironlake_teardown_rc6(dev); |
4206 | return -ENOMEM; | |
4207 | } | |
4208 | ||
4209 | return 0; | |
4210 | } | |
4211 | ||
930ebb46 | 4212 | static void ironlake_enable_rc6(struct drm_device *dev) |
2b4e57bd ED |
4213 | { |
4214 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d90c952 | 4215 | struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; |
3e960501 | 4216 | bool was_interruptible; |
2b4e57bd ED |
4217 | int ret; |
4218 | ||
4219 | /* rc6 disabled by default due to repeated reports of hanging during | |
4220 | * boot and resume. | |
4221 | */ | |
4222 | if (!intel_enable_rc6(dev)) | |
4223 | return; | |
4224 | ||
79f5b2c7 DV |
4225 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); |
4226 | ||
2b4e57bd | 4227 | ret = ironlake_setup_rc6(dev); |
79f5b2c7 | 4228 | if (ret) |
2b4e57bd | 4229 | return; |
2b4e57bd | 4230 | |
3e960501 CW |
4231 | was_interruptible = dev_priv->mm.interruptible; |
4232 | dev_priv->mm.interruptible = false; | |
4233 | ||
2b4e57bd ED |
4234 | /* |
4235 | * GPU can automatically power down the render unit if given a page | |
4236 | * to save state. | |
4237 | */ | |
6d90c952 | 4238 | ret = intel_ring_begin(ring, 6); |
2b4e57bd ED |
4239 | if (ret) { |
4240 | ironlake_teardown_rc6(dev); | |
3e960501 | 4241 | dev_priv->mm.interruptible = was_interruptible; |
2b4e57bd ED |
4242 | return; |
4243 | } | |
4244 | ||
6d90c952 DV |
4245 | intel_ring_emit(ring, MI_SUSPEND_FLUSH | MI_SUSPEND_FLUSH_EN); |
4246 | intel_ring_emit(ring, MI_SET_CONTEXT); | |
f343c5f6 | 4247 | intel_ring_emit(ring, i915_gem_obj_ggtt_offset(dev_priv->ips.renderctx) | |
6d90c952 DV |
4248 | MI_MM_SPACE_GTT | |
4249 | MI_SAVE_EXT_STATE_EN | | |
4250 | MI_RESTORE_EXT_STATE_EN | | |
4251 | MI_RESTORE_INHIBIT); | |
4252 | intel_ring_emit(ring, MI_SUSPEND_FLUSH); | |
4253 | intel_ring_emit(ring, MI_NOOP); | |
4254 | intel_ring_emit(ring, MI_FLUSH); | |
4255 | intel_ring_advance(ring); | |
2b4e57bd ED |
4256 | |
4257 | /* | |
4258 | * Wait for the command parser to advance past MI_SET_CONTEXT. The HW | |
4259 | * does an implicit flush, combined with MI_FLUSH above, it should be | |
4260 | * safe to assume that renderctx is valid | |
4261 | */ | |
3e960501 CW |
4262 | ret = intel_ring_idle(ring); |
4263 | dev_priv->mm.interruptible = was_interruptible; | |
2b4e57bd | 4264 | if (ret) { |
def27a58 | 4265 | DRM_ERROR("failed to enable ironlake power savings\n"); |
2b4e57bd | 4266 | ironlake_teardown_rc6(dev); |
2b4e57bd ED |
4267 | return; |
4268 | } | |
4269 | ||
f343c5f6 | 4270 | I915_WRITE(PWRCTXA, i915_gem_obj_ggtt_offset(dev_priv->ips.pwrctx) | PWRCTX_EN); |
2b4e57bd | 4271 | I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT); |
dc39fff7 BW |
4272 | |
4273 | intel_print_rc6_info(dev, INTEL_RC6_ENABLE); | |
2b4e57bd ED |
4274 | } |
4275 | ||
dde18883 ED |
4276 | static unsigned long intel_pxfreq(u32 vidfreq) |
4277 | { | |
4278 | unsigned long freq; | |
4279 | int div = (vidfreq & 0x3f0000) >> 16; | |
4280 | int post = (vidfreq & 0x3000) >> 12; | |
4281 | int pre = (vidfreq & 0x7); | |
4282 | ||
4283 | if (!pre) | |
4284 | return 0; | |
4285 | ||
4286 | freq = ((div * 133333) / ((1<<post) * pre)); | |
4287 | ||
4288 | return freq; | |
4289 | } | |
4290 | ||
eb48eb00 DV |
4291 | static const struct cparams { |
4292 | u16 i; | |
4293 | u16 t; | |
4294 | u16 m; | |
4295 | u16 c; | |
4296 | } cparams[] = { | |
4297 | { 1, 1333, 301, 28664 }, | |
4298 | { 1, 1066, 294, 24460 }, | |
4299 | { 1, 800, 294, 25192 }, | |
4300 | { 0, 1333, 276, 27605 }, | |
4301 | { 0, 1066, 276, 27605 }, | |
4302 | { 0, 800, 231, 23784 }, | |
4303 | }; | |
4304 | ||
f531dcb2 | 4305 | static unsigned long __i915_chipset_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
4306 | { |
4307 | u64 total_count, diff, ret; | |
4308 | u32 count1, count2, count3, m = 0, c = 0; | |
4309 | unsigned long now = jiffies_to_msecs(jiffies), diff1; | |
4310 | int i; | |
4311 | ||
02d71956 DV |
4312 | assert_spin_locked(&mchdev_lock); |
4313 | ||
20e4d407 | 4314 | diff1 = now - dev_priv->ips.last_time1; |
eb48eb00 DV |
4315 | |
4316 | /* Prevent division-by-zero if we are asking too fast. | |
4317 | * Also, we don't get interesting results if we are polling | |
4318 | * faster than once in 10ms, so just return the saved value | |
4319 | * in such cases. | |
4320 | */ | |
4321 | if (diff1 <= 10) | |
20e4d407 | 4322 | return dev_priv->ips.chipset_power; |
eb48eb00 DV |
4323 | |
4324 | count1 = I915_READ(DMIEC); | |
4325 | count2 = I915_READ(DDREC); | |
4326 | count3 = I915_READ(CSIEC); | |
4327 | ||
4328 | total_count = count1 + count2 + count3; | |
4329 | ||
4330 | /* FIXME: handle per-counter overflow */ | |
20e4d407 DV |
4331 | if (total_count < dev_priv->ips.last_count1) { |
4332 | diff = ~0UL - dev_priv->ips.last_count1; | |
eb48eb00 DV |
4333 | diff += total_count; |
4334 | } else { | |
20e4d407 | 4335 | diff = total_count - dev_priv->ips.last_count1; |
eb48eb00 DV |
4336 | } |
4337 | ||
4338 | for (i = 0; i < ARRAY_SIZE(cparams); i++) { | |
20e4d407 DV |
4339 | if (cparams[i].i == dev_priv->ips.c_m && |
4340 | cparams[i].t == dev_priv->ips.r_t) { | |
eb48eb00 DV |
4341 | m = cparams[i].m; |
4342 | c = cparams[i].c; | |
4343 | break; | |
4344 | } | |
4345 | } | |
4346 | ||
4347 | diff = div_u64(diff, diff1); | |
4348 | ret = ((m * diff) + c); | |
4349 | ret = div_u64(ret, 10); | |
4350 | ||
20e4d407 DV |
4351 | dev_priv->ips.last_count1 = total_count; |
4352 | dev_priv->ips.last_time1 = now; | |
eb48eb00 | 4353 | |
20e4d407 | 4354 | dev_priv->ips.chipset_power = ret; |
eb48eb00 DV |
4355 | |
4356 | return ret; | |
4357 | } | |
4358 | ||
f531dcb2 CW |
4359 | unsigned long i915_chipset_val(struct drm_i915_private *dev_priv) |
4360 | { | |
4361 | unsigned long val; | |
4362 | ||
4363 | if (dev_priv->info->gen != 5) | |
4364 | return 0; | |
4365 | ||
4366 | spin_lock_irq(&mchdev_lock); | |
4367 | ||
4368 | val = __i915_chipset_val(dev_priv); | |
4369 | ||
4370 | spin_unlock_irq(&mchdev_lock); | |
4371 | ||
4372 | return val; | |
4373 | } | |
4374 | ||
eb48eb00 DV |
4375 | unsigned long i915_mch_val(struct drm_i915_private *dev_priv) |
4376 | { | |
4377 | unsigned long m, x, b; | |
4378 | u32 tsfs; | |
4379 | ||
4380 | tsfs = I915_READ(TSFS); | |
4381 | ||
4382 | m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT); | |
4383 | x = I915_READ8(TR1); | |
4384 | ||
4385 | b = tsfs & TSFS_INTR_MASK; | |
4386 | ||
4387 | return ((m * x) / 127) - b; | |
4388 | } | |
4389 | ||
4390 | static u16 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid) | |
4391 | { | |
4392 | static const struct v_table { | |
4393 | u16 vd; /* in .1 mil */ | |
4394 | u16 vm; /* in .1 mil */ | |
4395 | } v_table[] = { | |
4396 | { 0, 0, }, | |
4397 | { 375, 0, }, | |
4398 | { 500, 0, }, | |
4399 | { 625, 0, }, | |
4400 | { 750, 0, }, | |
4401 | { 875, 0, }, | |
4402 | { 1000, 0, }, | |
4403 | { 1125, 0, }, | |
4404 | { 4125, 3000, }, | |
4405 | { 4125, 3000, }, | |
4406 | { 4125, 3000, }, | |
4407 | { 4125, 3000, }, | |
4408 | { 4125, 3000, }, | |
4409 | { 4125, 3000, }, | |
4410 | { 4125, 3000, }, | |
4411 | { 4125, 3000, }, | |
4412 | { 4125, 3000, }, | |
4413 | { 4125, 3000, }, | |
4414 | { 4125, 3000, }, | |
4415 | { 4125, 3000, }, | |
4416 | { 4125, 3000, }, | |
4417 | { 4125, 3000, }, | |
4418 | { 4125, 3000, }, | |
4419 | { 4125, 3000, }, | |
4420 | { 4125, 3000, }, | |
4421 | { 4125, 3000, }, | |
4422 | { 4125, 3000, }, | |
4423 | { 4125, 3000, }, | |
4424 | { 4125, 3000, }, | |
4425 | { 4125, 3000, }, | |
4426 | { 4125, 3000, }, | |
4427 | { 4125, 3000, }, | |
4428 | { 4250, 3125, }, | |
4429 | { 4375, 3250, }, | |
4430 | { 4500, 3375, }, | |
4431 | { 4625, 3500, }, | |
4432 | { 4750, 3625, }, | |
4433 | { 4875, 3750, }, | |
4434 | { 5000, 3875, }, | |
4435 | { 5125, 4000, }, | |
4436 | { 5250, 4125, }, | |
4437 | { 5375, 4250, }, | |
4438 | { 5500, 4375, }, | |
4439 | { 5625, 4500, }, | |
4440 | { 5750, 4625, }, | |
4441 | { 5875, 4750, }, | |
4442 | { 6000, 4875, }, | |
4443 | { 6125, 5000, }, | |
4444 | { 6250, 5125, }, | |
4445 | { 6375, 5250, }, | |
4446 | { 6500, 5375, }, | |
4447 | { 6625, 5500, }, | |
4448 | { 6750, 5625, }, | |
4449 | { 6875, 5750, }, | |
4450 | { 7000, 5875, }, | |
4451 | { 7125, 6000, }, | |
4452 | { 7250, 6125, }, | |
4453 | { 7375, 6250, }, | |
4454 | { 7500, 6375, }, | |
4455 | { 7625, 6500, }, | |
4456 | { 7750, 6625, }, | |
4457 | { 7875, 6750, }, | |
4458 | { 8000, 6875, }, | |
4459 | { 8125, 7000, }, | |
4460 | { 8250, 7125, }, | |
4461 | { 8375, 7250, }, | |
4462 | { 8500, 7375, }, | |
4463 | { 8625, 7500, }, | |
4464 | { 8750, 7625, }, | |
4465 | { 8875, 7750, }, | |
4466 | { 9000, 7875, }, | |
4467 | { 9125, 8000, }, | |
4468 | { 9250, 8125, }, | |
4469 | { 9375, 8250, }, | |
4470 | { 9500, 8375, }, | |
4471 | { 9625, 8500, }, | |
4472 | { 9750, 8625, }, | |
4473 | { 9875, 8750, }, | |
4474 | { 10000, 8875, }, | |
4475 | { 10125, 9000, }, | |
4476 | { 10250, 9125, }, | |
4477 | { 10375, 9250, }, | |
4478 | { 10500, 9375, }, | |
4479 | { 10625, 9500, }, | |
4480 | { 10750, 9625, }, | |
4481 | { 10875, 9750, }, | |
4482 | { 11000, 9875, }, | |
4483 | { 11125, 10000, }, | |
4484 | { 11250, 10125, }, | |
4485 | { 11375, 10250, }, | |
4486 | { 11500, 10375, }, | |
4487 | { 11625, 10500, }, | |
4488 | { 11750, 10625, }, | |
4489 | { 11875, 10750, }, | |
4490 | { 12000, 10875, }, | |
4491 | { 12125, 11000, }, | |
4492 | { 12250, 11125, }, | |
4493 | { 12375, 11250, }, | |
4494 | { 12500, 11375, }, | |
4495 | { 12625, 11500, }, | |
4496 | { 12750, 11625, }, | |
4497 | { 12875, 11750, }, | |
4498 | { 13000, 11875, }, | |
4499 | { 13125, 12000, }, | |
4500 | { 13250, 12125, }, | |
4501 | { 13375, 12250, }, | |
4502 | { 13500, 12375, }, | |
4503 | { 13625, 12500, }, | |
4504 | { 13750, 12625, }, | |
4505 | { 13875, 12750, }, | |
4506 | { 14000, 12875, }, | |
4507 | { 14125, 13000, }, | |
4508 | { 14250, 13125, }, | |
4509 | { 14375, 13250, }, | |
4510 | { 14500, 13375, }, | |
4511 | { 14625, 13500, }, | |
4512 | { 14750, 13625, }, | |
4513 | { 14875, 13750, }, | |
4514 | { 15000, 13875, }, | |
4515 | { 15125, 14000, }, | |
4516 | { 15250, 14125, }, | |
4517 | { 15375, 14250, }, | |
4518 | { 15500, 14375, }, | |
4519 | { 15625, 14500, }, | |
4520 | { 15750, 14625, }, | |
4521 | { 15875, 14750, }, | |
4522 | { 16000, 14875, }, | |
4523 | { 16125, 15000, }, | |
4524 | }; | |
4525 | if (dev_priv->info->is_mobile) | |
4526 | return v_table[pxvid].vm; | |
4527 | else | |
4528 | return v_table[pxvid].vd; | |
4529 | } | |
4530 | ||
02d71956 | 4531 | static void __i915_update_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
4532 | { |
4533 | struct timespec now, diff1; | |
4534 | u64 diff; | |
4535 | unsigned long diffms; | |
4536 | u32 count; | |
4537 | ||
02d71956 | 4538 | assert_spin_locked(&mchdev_lock); |
eb48eb00 DV |
4539 | |
4540 | getrawmonotonic(&now); | |
20e4d407 | 4541 | diff1 = timespec_sub(now, dev_priv->ips.last_time2); |
eb48eb00 DV |
4542 | |
4543 | /* Don't divide by 0 */ | |
4544 | diffms = diff1.tv_sec * 1000 + diff1.tv_nsec / 1000000; | |
4545 | if (!diffms) | |
4546 | return; | |
4547 | ||
4548 | count = I915_READ(GFXEC); | |
4549 | ||
20e4d407 DV |
4550 | if (count < dev_priv->ips.last_count2) { |
4551 | diff = ~0UL - dev_priv->ips.last_count2; | |
eb48eb00 DV |
4552 | diff += count; |
4553 | } else { | |
20e4d407 | 4554 | diff = count - dev_priv->ips.last_count2; |
eb48eb00 DV |
4555 | } |
4556 | ||
20e4d407 DV |
4557 | dev_priv->ips.last_count2 = count; |
4558 | dev_priv->ips.last_time2 = now; | |
eb48eb00 DV |
4559 | |
4560 | /* More magic constants... */ | |
4561 | diff = diff * 1181; | |
4562 | diff = div_u64(diff, diffms * 10); | |
20e4d407 | 4563 | dev_priv->ips.gfx_power = diff; |
eb48eb00 DV |
4564 | } |
4565 | ||
02d71956 DV |
4566 | void i915_update_gfx_val(struct drm_i915_private *dev_priv) |
4567 | { | |
4568 | if (dev_priv->info->gen != 5) | |
4569 | return; | |
4570 | ||
9270388e | 4571 | spin_lock_irq(&mchdev_lock); |
02d71956 DV |
4572 | |
4573 | __i915_update_gfx_val(dev_priv); | |
4574 | ||
9270388e | 4575 | spin_unlock_irq(&mchdev_lock); |
02d71956 DV |
4576 | } |
4577 | ||
f531dcb2 | 4578 | static unsigned long __i915_gfx_val(struct drm_i915_private *dev_priv) |
eb48eb00 DV |
4579 | { |
4580 | unsigned long t, corr, state1, corr2, state2; | |
4581 | u32 pxvid, ext_v; | |
4582 | ||
02d71956 DV |
4583 | assert_spin_locked(&mchdev_lock); |
4584 | ||
c6a828d3 | 4585 | pxvid = I915_READ(PXVFREQ_BASE + (dev_priv->rps.cur_delay * 4)); |
eb48eb00 DV |
4586 | pxvid = (pxvid >> 24) & 0x7f; |
4587 | ext_v = pvid_to_extvid(dev_priv, pxvid); | |
4588 | ||
4589 | state1 = ext_v; | |
4590 | ||
4591 | t = i915_mch_val(dev_priv); | |
4592 | ||
4593 | /* Revel in the empirically derived constants */ | |
4594 | ||
4595 | /* Correction factor in 1/100000 units */ | |
4596 | if (t > 80) | |
4597 | corr = ((t * 2349) + 135940); | |
4598 | else if (t >= 50) | |
4599 | corr = ((t * 964) + 29317); | |
4600 | else /* < 50 */ | |
4601 | corr = ((t * 301) + 1004); | |
4602 | ||
4603 | corr = corr * ((150142 * state1) / 10000 - 78642); | |
4604 | corr /= 100000; | |
20e4d407 | 4605 | corr2 = (corr * dev_priv->ips.corr); |
eb48eb00 DV |
4606 | |
4607 | state2 = (corr2 * state1) / 10000; | |
4608 | state2 /= 100; /* convert to mW */ | |
4609 | ||
02d71956 | 4610 | __i915_update_gfx_val(dev_priv); |
eb48eb00 | 4611 | |
20e4d407 | 4612 | return dev_priv->ips.gfx_power + state2; |
eb48eb00 DV |
4613 | } |
4614 | ||
f531dcb2 CW |
4615 | unsigned long i915_gfx_val(struct drm_i915_private *dev_priv) |
4616 | { | |
4617 | unsigned long val; | |
4618 | ||
4619 | if (dev_priv->info->gen != 5) | |
4620 | return 0; | |
4621 | ||
4622 | spin_lock_irq(&mchdev_lock); | |
4623 | ||
4624 | val = __i915_gfx_val(dev_priv); | |
4625 | ||
4626 | spin_unlock_irq(&mchdev_lock); | |
4627 | ||
4628 | return val; | |
4629 | } | |
4630 | ||
eb48eb00 DV |
4631 | /** |
4632 | * i915_read_mch_val - return value for IPS use | |
4633 | * | |
4634 | * Calculate and return a value for the IPS driver to use when deciding whether | |
4635 | * we have thermal and power headroom to increase CPU or GPU power budget. | |
4636 | */ | |
4637 | unsigned long i915_read_mch_val(void) | |
4638 | { | |
4639 | struct drm_i915_private *dev_priv; | |
4640 | unsigned long chipset_val, graphics_val, ret = 0; | |
4641 | ||
9270388e | 4642 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
4643 | if (!i915_mch_dev) |
4644 | goto out_unlock; | |
4645 | dev_priv = i915_mch_dev; | |
4646 | ||
f531dcb2 CW |
4647 | chipset_val = __i915_chipset_val(dev_priv); |
4648 | graphics_val = __i915_gfx_val(dev_priv); | |
eb48eb00 DV |
4649 | |
4650 | ret = chipset_val + graphics_val; | |
4651 | ||
4652 | out_unlock: | |
9270388e | 4653 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4654 | |
4655 | return ret; | |
4656 | } | |
4657 | EXPORT_SYMBOL_GPL(i915_read_mch_val); | |
4658 | ||
4659 | /** | |
4660 | * i915_gpu_raise - raise GPU frequency limit | |
4661 | * | |
4662 | * Raise the limit; IPS indicates we have thermal headroom. | |
4663 | */ | |
4664 | bool i915_gpu_raise(void) | |
4665 | { | |
4666 | struct drm_i915_private *dev_priv; | |
4667 | bool ret = true; | |
4668 | ||
9270388e | 4669 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
4670 | if (!i915_mch_dev) { |
4671 | ret = false; | |
4672 | goto out_unlock; | |
4673 | } | |
4674 | dev_priv = i915_mch_dev; | |
4675 | ||
20e4d407 DV |
4676 | if (dev_priv->ips.max_delay > dev_priv->ips.fmax) |
4677 | dev_priv->ips.max_delay--; | |
eb48eb00 DV |
4678 | |
4679 | out_unlock: | |
9270388e | 4680 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4681 | |
4682 | return ret; | |
4683 | } | |
4684 | EXPORT_SYMBOL_GPL(i915_gpu_raise); | |
4685 | ||
4686 | /** | |
4687 | * i915_gpu_lower - lower GPU frequency limit | |
4688 | * | |
4689 | * IPS indicates we're close to a thermal limit, so throttle back the GPU | |
4690 | * frequency maximum. | |
4691 | */ | |
4692 | bool i915_gpu_lower(void) | |
4693 | { | |
4694 | struct drm_i915_private *dev_priv; | |
4695 | bool ret = true; | |
4696 | ||
9270388e | 4697 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
4698 | if (!i915_mch_dev) { |
4699 | ret = false; | |
4700 | goto out_unlock; | |
4701 | } | |
4702 | dev_priv = i915_mch_dev; | |
4703 | ||
20e4d407 DV |
4704 | if (dev_priv->ips.max_delay < dev_priv->ips.min_delay) |
4705 | dev_priv->ips.max_delay++; | |
eb48eb00 DV |
4706 | |
4707 | out_unlock: | |
9270388e | 4708 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4709 | |
4710 | return ret; | |
4711 | } | |
4712 | EXPORT_SYMBOL_GPL(i915_gpu_lower); | |
4713 | ||
4714 | /** | |
4715 | * i915_gpu_busy - indicate GPU business to IPS | |
4716 | * | |
4717 | * Tell the IPS driver whether or not the GPU is busy. | |
4718 | */ | |
4719 | bool i915_gpu_busy(void) | |
4720 | { | |
4721 | struct drm_i915_private *dev_priv; | |
f047e395 | 4722 | struct intel_ring_buffer *ring; |
eb48eb00 | 4723 | bool ret = false; |
f047e395 | 4724 | int i; |
eb48eb00 | 4725 | |
9270388e | 4726 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
4727 | if (!i915_mch_dev) |
4728 | goto out_unlock; | |
4729 | dev_priv = i915_mch_dev; | |
4730 | ||
f047e395 CW |
4731 | for_each_ring(ring, dev_priv, i) |
4732 | ret |= !list_empty(&ring->request_list); | |
eb48eb00 DV |
4733 | |
4734 | out_unlock: | |
9270388e | 4735 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4736 | |
4737 | return ret; | |
4738 | } | |
4739 | EXPORT_SYMBOL_GPL(i915_gpu_busy); | |
4740 | ||
4741 | /** | |
4742 | * i915_gpu_turbo_disable - disable graphics turbo | |
4743 | * | |
4744 | * Disable graphics turbo by resetting the max frequency and setting the | |
4745 | * current frequency to the default. | |
4746 | */ | |
4747 | bool i915_gpu_turbo_disable(void) | |
4748 | { | |
4749 | struct drm_i915_private *dev_priv; | |
4750 | bool ret = true; | |
4751 | ||
9270388e | 4752 | spin_lock_irq(&mchdev_lock); |
eb48eb00 DV |
4753 | if (!i915_mch_dev) { |
4754 | ret = false; | |
4755 | goto out_unlock; | |
4756 | } | |
4757 | dev_priv = i915_mch_dev; | |
4758 | ||
20e4d407 | 4759 | dev_priv->ips.max_delay = dev_priv->ips.fstart; |
eb48eb00 | 4760 | |
20e4d407 | 4761 | if (!ironlake_set_drps(dev_priv->dev, dev_priv->ips.fstart)) |
eb48eb00 DV |
4762 | ret = false; |
4763 | ||
4764 | out_unlock: | |
9270388e | 4765 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4766 | |
4767 | return ret; | |
4768 | } | |
4769 | EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable); | |
4770 | ||
4771 | /** | |
4772 | * Tells the intel_ips driver that the i915 driver is now loaded, if | |
4773 | * IPS got loaded first. | |
4774 | * | |
4775 | * This awkward dance is so that neither module has to depend on the | |
4776 | * other in order for IPS to do the appropriate communication of | |
4777 | * GPU turbo limits to i915. | |
4778 | */ | |
4779 | static void | |
4780 | ips_ping_for_i915_load(void) | |
4781 | { | |
4782 | void (*link)(void); | |
4783 | ||
4784 | link = symbol_get(ips_link_to_i915_driver); | |
4785 | if (link) { | |
4786 | link(); | |
4787 | symbol_put(ips_link_to_i915_driver); | |
4788 | } | |
4789 | } | |
4790 | ||
4791 | void intel_gpu_ips_init(struct drm_i915_private *dev_priv) | |
4792 | { | |
02d71956 DV |
4793 | /* We only register the i915 ips part with intel-ips once everything is |
4794 | * set up, to avoid intel-ips sneaking in and reading bogus values. */ | |
9270388e | 4795 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 4796 | i915_mch_dev = dev_priv; |
9270388e | 4797 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 DV |
4798 | |
4799 | ips_ping_for_i915_load(); | |
4800 | } | |
4801 | ||
4802 | void intel_gpu_ips_teardown(void) | |
4803 | { | |
9270388e | 4804 | spin_lock_irq(&mchdev_lock); |
eb48eb00 | 4805 | i915_mch_dev = NULL; |
9270388e | 4806 | spin_unlock_irq(&mchdev_lock); |
eb48eb00 | 4807 | } |
8090c6b9 | 4808 | static void intel_init_emon(struct drm_device *dev) |
dde18883 ED |
4809 | { |
4810 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4811 | u32 lcfuse; | |
4812 | u8 pxw[16]; | |
4813 | int i; | |
4814 | ||
4815 | /* Disable to program */ | |
4816 | I915_WRITE(ECR, 0); | |
4817 | POSTING_READ(ECR); | |
4818 | ||
4819 | /* Program energy weights for various events */ | |
4820 | I915_WRITE(SDEW, 0x15040d00); | |
4821 | I915_WRITE(CSIEW0, 0x007f0000); | |
4822 | I915_WRITE(CSIEW1, 0x1e220004); | |
4823 | I915_WRITE(CSIEW2, 0x04000004); | |
4824 | ||
4825 | for (i = 0; i < 5; i++) | |
4826 | I915_WRITE(PEW + (i * 4), 0); | |
4827 | for (i = 0; i < 3; i++) | |
4828 | I915_WRITE(DEW + (i * 4), 0); | |
4829 | ||
4830 | /* Program P-state weights to account for frequency power adjustment */ | |
4831 | for (i = 0; i < 16; i++) { | |
4832 | u32 pxvidfreq = I915_READ(PXVFREQ_BASE + (i * 4)); | |
4833 | unsigned long freq = intel_pxfreq(pxvidfreq); | |
4834 | unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >> | |
4835 | PXVFREQ_PX_SHIFT; | |
4836 | unsigned long val; | |
4837 | ||
4838 | val = vid * vid; | |
4839 | val *= (freq / 1000); | |
4840 | val *= 255; | |
4841 | val /= (127*127*900); | |
4842 | if (val > 0xff) | |
4843 | DRM_ERROR("bad pxval: %ld\n", val); | |
4844 | pxw[i] = val; | |
4845 | } | |
4846 | /* Render standby states get 0 weight */ | |
4847 | pxw[14] = 0; | |
4848 | pxw[15] = 0; | |
4849 | ||
4850 | for (i = 0; i < 4; i++) { | |
4851 | u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) | | |
4852 | (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]); | |
4853 | I915_WRITE(PXW + (i * 4), val); | |
4854 | } | |
4855 | ||
4856 | /* Adjust magic regs to magic values (more experimental results) */ | |
4857 | I915_WRITE(OGW0, 0); | |
4858 | I915_WRITE(OGW1, 0); | |
4859 | I915_WRITE(EG0, 0x00007f00); | |
4860 | I915_WRITE(EG1, 0x0000000e); | |
4861 | I915_WRITE(EG2, 0x000e0000); | |
4862 | I915_WRITE(EG3, 0x68000300); | |
4863 | I915_WRITE(EG4, 0x42000000); | |
4864 | I915_WRITE(EG5, 0x00140031); | |
4865 | I915_WRITE(EG6, 0); | |
4866 | I915_WRITE(EG7, 0); | |
4867 | ||
4868 | for (i = 0; i < 8; i++) | |
4869 | I915_WRITE(PXWL + (i * 4), 0); | |
4870 | ||
4871 | /* Enable PMON + select events */ | |
4872 | I915_WRITE(ECR, 0x80000019); | |
4873 | ||
4874 | lcfuse = I915_READ(LCFUSE02); | |
4875 | ||
20e4d407 | 4876 | dev_priv->ips.corr = (lcfuse & LCFUSE_HIV_MASK); |
dde18883 ED |
4877 | } |
4878 | ||
8090c6b9 DV |
4879 | void intel_disable_gt_powersave(struct drm_device *dev) |
4880 | { | |
1a01ab3b JB |
4881 | struct drm_i915_private *dev_priv = dev->dev_private; |
4882 | ||
fd0c0642 DV |
4883 | /* Interrupts should be disabled already to avoid re-arming. */ |
4884 | WARN_ON(dev->irq_enabled); | |
4885 | ||
930ebb46 | 4886 | if (IS_IRONLAKE_M(dev)) { |
8090c6b9 | 4887 | ironlake_disable_drps(dev); |
930ebb46 | 4888 | ironlake_disable_rc6(dev); |
0a073b84 | 4889 | } else if (INTEL_INFO(dev)->gen >= 6) { |
1a01ab3b | 4890 | cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work); |
250848ca | 4891 | cancel_work_sync(&dev_priv->rps.work); |
4fc688ce | 4892 | mutex_lock(&dev_priv->rps.hw_lock); |
d20d4f0c JB |
4893 | if (IS_VALLEYVIEW(dev)) |
4894 | valleyview_disable_rps(dev); | |
4895 | else | |
4896 | gen6_disable_rps(dev); | |
c0951f0c | 4897 | dev_priv->rps.enabled = false; |
4fc688ce | 4898 | mutex_unlock(&dev_priv->rps.hw_lock); |
930ebb46 | 4899 | } |
8090c6b9 DV |
4900 | } |
4901 | ||
1a01ab3b JB |
4902 | static void intel_gen6_powersave_work(struct work_struct *work) |
4903 | { | |
4904 | struct drm_i915_private *dev_priv = | |
4905 | container_of(work, struct drm_i915_private, | |
4906 | rps.delayed_resume_work.work); | |
4907 | struct drm_device *dev = dev_priv->dev; | |
4908 | ||
4fc688ce | 4909 | mutex_lock(&dev_priv->rps.hw_lock); |
0a073b84 JB |
4910 | |
4911 | if (IS_VALLEYVIEW(dev)) { | |
4912 | valleyview_enable_rps(dev); | |
6edee7f3 BW |
4913 | } else if (IS_BROADWELL(dev)) { |
4914 | gen8_enable_rps(dev); | |
4915 | gen6_update_ring_freq(dev); | |
0a073b84 JB |
4916 | } else { |
4917 | gen6_enable_rps(dev); | |
4918 | gen6_update_ring_freq(dev); | |
4919 | } | |
c0951f0c | 4920 | dev_priv->rps.enabled = true; |
4fc688ce | 4921 | mutex_unlock(&dev_priv->rps.hw_lock); |
1a01ab3b JB |
4922 | } |
4923 | ||
8090c6b9 DV |
4924 | void intel_enable_gt_powersave(struct drm_device *dev) |
4925 | { | |
1a01ab3b JB |
4926 | struct drm_i915_private *dev_priv = dev->dev_private; |
4927 | ||
8090c6b9 DV |
4928 | if (IS_IRONLAKE_M(dev)) { |
4929 | ironlake_enable_drps(dev); | |
4930 | ironlake_enable_rc6(dev); | |
4931 | intel_init_emon(dev); | |
0a073b84 | 4932 | } else if (IS_GEN6(dev) || IS_GEN7(dev)) { |
1a01ab3b JB |
4933 | /* |
4934 | * PCU communication is slow and this doesn't need to be | |
4935 | * done at any specific time, so do this out of our fast path | |
4936 | * to make resume and init faster. | |
4937 | */ | |
4938 | schedule_delayed_work(&dev_priv->rps.delayed_resume_work, | |
4939 | round_jiffies_up_relative(HZ)); | |
8090c6b9 DV |
4940 | } |
4941 | } | |
4942 | ||
3107bd48 DV |
4943 | static void ibx_init_clock_gating(struct drm_device *dev) |
4944 | { | |
4945 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4946 | ||
4947 | /* | |
4948 | * On Ibex Peak and Cougar Point, we need to disable clock | |
4949 | * gating for the panel power sequencer or it will fail to | |
4950 | * start up when no ports are active. | |
4951 | */ | |
4952 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); | |
4953 | } | |
4954 | ||
0e088b8f VS |
4955 | static void g4x_disable_trickle_feed(struct drm_device *dev) |
4956 | { | |
4957 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4958 | int pipe; | |
4959 | ||
4960 | for_each_pipe(pipe) { | |
4961 | I915_WRITE(DSPCNTR(pipe), | |
4962 | I915_READ(DSPCNTR(pipe)) | | |
4963 | DISPPLANE_TRICKLE_FEED_DISABLE); | |
1dba99f4 | 4964 | intel_flush_primary_plane(dev_priv, pipe); |
0e088b8f VS |
4965 | } |
4966 | } | |
4967 | ||
1fa61106 | 4968 | static void ironlake_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
4969 | { |
4970 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231e54f6 | 4971 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 4972 | |
f1e8fa56 DL |
4973 | /* |
4974 | * Required for FBC | |
4975 | * WaFbcDisableDpfcClockGating:ilk | |
4976 | */ | |
4d47e4f5 DL |
4977 | dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE | |
4978 | ILK_DPFCUNIT_CLOCK_GATE_DISABLE | | |
4979 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE; | |
6f1d69b0 ED |
4980 | |
4981 | I915_WRITE(PCH_3DCGDIS0, | |
4982 | MARIUNIT_CLOCK_GATE_DISABLE | | |
4983 | SVSMUNIT_CLOCK_GATE_DISABLE); | |
4984 | I915_WRITE(PCH_3DCGDIS1, | |
4985 | VFMUNIT_CLOCK_GATE_DISABLE); | |
4986 | ||
6f1d69b0 ED |
4987 | /* |
4988 | * According to the spec the following bits should be set in | |
4989 | * order to enable memory self-refresh | |
4990 | * The bit 22/21 of 0x42004 | |
4991 | * The bit 5 of 0x42020 | |
4992 | * The bit 15 of 0x45000 | |
4993 | */ | |
4994 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
4995 | (I915_READ(ILK_DISPLAY_CHICKEN2) | | |
4996 | ILK_DPARB_GATE | ILK_VSDPFD_FULL)); | |
4d47e4f5 | 4997 | dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE; |
6f1d69b0 ED |
4998 | I915_WRITE(DISP_ARB_CTL, |
4999 | (I915_READ(DISP_ARB_CTL) | | |
5000 | DISP_FBC_WM_DIS)); | |
5001 | I915_WRITE(WM3_LP_ILK, 0); | |
5002 | I915_WRITE(WM2_LP_ILK, 0); | |
5003 | I915_WRITE(WM1_LP_ILK, 0); | |
5004 | ||
5005 | /* | |
5006 | * Based on the document from hardware guys the following bits | |
5007 | * should be set unconditionally in order to enable FBC. | |
5008 | * The bit 22 of 0x42000 | |
5009 | * The bit 22 of 0x42004 | |
5010 | * The bit 7,8,9 of 0x42020. | |
5011 | */ | |
5012 | if (IS_IRONLAKE_M(dev)) { | |
4bb35334 | 5013 | /* WaFbcAsynchFlipDisableFbcQueue:ilk */ |
6f1d69b0 ED |
5014 | I915_WRITE(ILK_DISPLAY_CHICKEN1, |
5015 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
5016 | ILK_FBCQ_DIS); | |
5017 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
5018 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
5019 | ILK_DPARB_GATE); | |
6f1d69b0 ED |
5020 | } |
5021 | ||
4d47e4f5 DL |
5022 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
5023 | ||
6f1d69b0 ED |
5024 | I915_WRITE(ILK_DISPLAY_CHICKEN2, |
5025 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
5026 | ILK_ELPIN_409_SELECT); | |
5027 | I915_WRITE(_3D_CHICKEN2, | |
5028 | _3D_CHICKEN2_WM_READ_PIPELINED << 16 | | |
5029 | _3D_CHICKEN2_WM_READ_PIPELINED); | |
4358a374 | 5030 | |
ecdb4eb7 | 5031 | /* WaDisableRenderCachePipelinedFlush:ilk */ |
4358a374 DV |
5032 | I915_WRITE(CACHE_MODE_0, |
5033 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
3107bd48 | 5034 | |
0e088b8f | 5035 | g4x_disable_trickle_feed(dev); |
bdad2b2f | 5036 | |
3107bd48 DV |
5037 | ibx_init_clock_gating(dev); |
5038 | } | |
5039 | ||
5040 | static void cpt_init_clock_gating(struct drm_device *dev) | |
5041 | { | |
5042 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5043 | int pipe; | |
3f704fa2 | 5044 | uint32_t val; |
3107bd48 DV |
5045 | |
5046 | /* | |
5047 | * On Ibex Peak and Cougar Point, we need to disable clock | |
5048 | * gating for the panel power sequencer or it will fail to | |
5049 | * start up when no ports are active. | |
5050 | */ | |
cd664078 JB |
5051 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE | |
5052 | PCH_DPLUNIT_CLOCK_GATE_DISABLE | | |
5053 | PCH_CPUNIT_CLOCK_GATE_DISABLE); | |
3107bd48 DV |
5054 | I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) | |
5055 | DPLS_EDP_PPS_FIX_DIS); | |
335c07b7 TI |
5056 | /* The below fixes the weird display corruption, a few pixels shifted |
5057 | * downward, on (only) LVDS of some HP laptops with IVY. | |
5058 | */ | |
3f704fa2 | 5059 | for_each_pipe(pipe) { |
dc4bd2d1 PZ |
5060 | val = I915_READ(TRANS_CHICKEN2(pipe)); |
5061 | val |= TRANS_CHICKEN2_TIMING_OVERRIDE; | |
5062 | val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED; | |
41aa3448 | 5063 | if (dev_priv->vbt.fdi_rx_polarity_inverted) |
3f704fa2 | 5064 | val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED; |
dc4bd2d1 PZ |
5065 | val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK; |
5066 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER; | |
5067 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH; | |
3f704fa2 PZ |
5068 | I915_WRITE(TRANS_CHICKEN2(pipe), val); |
5069 | } | |
3107bd48 DV |
5070 | /* WADP0ClockGatingDisable */ |
5071 | for_each_pipe(pipe) { | |
5072 | I915_WRITE(TRANS_CHICKEN1(pipe), | |
5073 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); | |
5074 | } | |
6f1d69b0 ED |
5075 | } |
5076 | ||
1d7aaa0c DV |
5077 | static void gen6_check_mch_setup(struct drm_device *dev) |
5078 | { | |
5079 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5080 | uint32_t tmp; | |
5081 | ||
5082 | tmp = I915_READ(MCH_SSKPD); | |
5083 | if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL) { | |
5084 | DRM_INFO("Wrong MCH_SSKPD value: 0x%08x\n", tmp); | |
5085 | DRM_INFO("This can cause pipe underruns and display issues.\n"); | |
5086 | DRM_INFO("Please upgrade your BIOS to fix this.\n"); | |
5087 | } | |
5088 | } | |
5089 | ||
1fa61106 | 5090 | static void gen6_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5091 | { |
5092 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231e54f6 | 5093 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
6f1d69b0 | 5094 | |
231e54f6 | 5095 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
6f1d69b0 ED |
5096 | |
5097 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
5098 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
5099 | ILK_ELPIN_409_SELECT); | |
5100 | ||
ecdb4eb7 | 5101 | /* WaDisableHiZPlanesWhenMSAAEnabled:snb */ |
4283908e DV |
5102 | I915_WRITE(_3D_CHICKEN, |
5103 | _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB)); | |
5104 | ||
ecdb4eb7 | 5105 | /* WaSetupGtModeTdRowDispatch:snb */ |
6547fbdb DV |
5106 | if (IS_SNB_GT1(dev)) |
5107 | I915_WRITE(GEN6_GT_MODE, | |
5108 | _MASKED_BIT_ENABLE(GEN6_TD_FOUR_ROW_DISPATCH_DISABLE)); | |
5109 | ||
6f1d69b0 ED |
5110 | I915_WRITE(WM3_LP_ILK, 0); |
5111 | I915_WRITE(WM2_LP_ILK, 0); | |
5112 | I915_WRITE(WM1_LP_ILK, 0); | |
5113 | ||
6f1d69b0 | 5114 | I915_WRITE(CACHE_MODE_0, |
50743298 | 5115 | _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB)); |
6f1d69b0 ED |
5116 | |
5117 | I915_WRITE(GEN6_UCGCTL1, | |
5118 | I915_READ(GEN6_UCGCTL1) | | |
5119 | GEN6_BLBUNIT_CLOCK_GATE_DISABLE | | |
5120 | GEN6_CSUNIT_CLOCK_GATE_DISABLE); | |
5121 | ||
5122 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock | |
5123 | * gating disable must be set. Failure to set it results in | |
5124 | * flickering pixels due to Z write ordering failures after | |
5125 | * some amount of runtime in the Mesa "fire" demo, and Unigine | |
5126 | * Sanctuary and Tropics, and apparently anything else with | |
5127 | * alpha test or pixel discard. | |
5128 | * | |
5129 | * According to the spec, bit 11 (RCCUNIT) must also be set, | |
5130 | * but we didn't debug actual testcases to find it out. | |
0f846f81 | 5131 | * |
ecdb4eb7 DL |
5132 | * Also apply WaDisableVDSUnitClockGating:snb and |
5133 | * WaDisableRCPBUnitClockGating:snb. | |
6f1d69b0 ED |
5134 | */ |
5135 | I915_WRITE(GEN6_UCGCTL2, | |
0f846f81 | 5136 | GEN7_VDSUNIT_CLOCK_GATE_DISABLE | |
6f1d69b0 ED |
5137 | GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | |
5138 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); | |
5139 | ||
5140 | /* Bspec says we need to always set all mask bits. */ | |
26b6e44a KG |
5141 | I915_WRITE(_3D_CHICKEN3, (0xFFFF << 16) | |
5142 | _3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL); | |
6f1d69b0 ED |
5143 | |
5144 | /* | |
5145 | * According to the spec the following bits should be | |
5146 | * set in order to enable memory self-refresh and fbc: | |
5147 | * The bit21 and bit22 of 0x42000 | |
5148 | * The bit21 and bit22 of 0x42004 | |
5149 | * The bit5 and bit7 of 0x42020 | |
5150 | * The bit14 of 0x70180 | |
5151 | * The bit14 of 0x71180 | |
4bb35334 DL |
5152 | * |
5153 | * WaFbcAsynchFlipDisableFbcQueue:snb | |
6f1d69b0 ED |
5154 | */ |
5155 | I915_WRITE(ILK_DISPLAY_CHICKEN1, | |
5156 | I915_READ(ILK_DISPLAY_CHICKEN1) | | |
5157 | ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS); | |
5158 | I915_WRITE(ILK_DISPLAY_CHICKEN2, | |
5159 | I915_READ(ILK_DISPLAY_CHICKEN2) | | |
5160 | ILK_DPARB_GATE | ILK_VSDPFD_FULL); | |
231e54f6 DL |
5161 | I915_WRITE(ILK_DSPCLK_GATE_D, |
5162 | I915_READ(ILK_DSPCLK_GATE_D) | | |
5163 | ILK_DPARBUNIT_CLOCK_GATE_ENABLE | | |
5164 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE); | |
6f1d69b0 | 5165 | |
0e088b8f | 5166 | g4x_disable_trickle_feed(dev); |
f8f2ac9a BW |
5167 | |
5168 | /* The default value should be 0x200 according to docs, but the two | |
5169 | * platforms I checked have a 0 for this. (Maybe BIOS overrides?) */ | |
5170 | I915_WRITE(GEN6_GT_MODE, _MASKED_BIT_DISABLE(0xffff)); | |
5171 | I915_WRITE(GEN6_GT_MODE, _MASKED_BIT_ENABLE(GEN6_GT_MODE_HI)); | |
3107bd48 DV |
5172 | |
5173 | cpt_init_clock_gating(dev); | |
1d7aaa0c DV |
5174 | |
5175 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
5176 | } |
5177 | ||
5178 | static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv) | |
5179 | { | |
5180 | uint32_t reg = I915_READ(GEN7_FF_THREAD_MODE); | |
5181 | ||
5182 | reg &= ~GEN7_FF_SCHED_MASK; | |
5183 | reg |= GEN7_FF_TS_SCHED_HW; | |
5184 | reg |= GEN7_FF_VS_SCHED_HW; | |
5185 | reg |= GEN7_FF_DS_SCHED_HW; | |
5186 | ||
41c0b3a8 BW |
5187 | if (IS_HASWELL(dev_priv->dev)) |
5188 | reg &= ~GEN7_FF_VS_REF_CNT_FFME; | |
5189 | ||
6f1d69b0 ED |
5190 | I915_WRITE(GEN7_FF_THREAD_MODE, reg); |
5191 | } | |
5192 | ||
17a303ec PZ |
5193 | static void lpt_init_clock_gating(struct drm_device *dev) |
5194 | { | |
5195 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5196 | ||
5197 | /* | |
5198 | * TODO: this bit should only be enabled when really needed, then | |
5199 | * disabled when not needed anymore in order to save power. | |
5200 | */ | |
5201 | if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) | |
5202 | I915_WRITE(SOUTH_DSPCLK_GATE_D, | |
5203 | I915_READ(SOUTH_DSPCLK_GATE_D) | | |
5204 | PCH_LP_PARTITION_LEVEL_DISABLE); | |
0a790cdb PZ |
5205 | |
5206 | /* WADPOClockGatingDisable:hsw */ | |
5207 | I915_WRITE(_TRANSA_CHICKEN1, | |
5208 | I915_READ(_TRANSA_CHICKEN1) | | |
5209 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); | |
17a303ec PZ |
5210 | } |
5211 | ||
7d708ee4 ID |
5212 | static void lpt_suspend_hw(struct drm_device *dev) |
5213 | { | |
5214 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5215 | ||
5216 | if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) { | |
5217 | uint32_t val = I915_READ(SOUTH_DSPCLK_GATE_D); | |
5218 | ||
5219 | val &= ~PCH_LP_PARTITION_LEVEL_DISABLE; | |
5220 | I915_WRITE(SOUTH_DSPCLK_GATE_D, val); | |
5221 | } | |
5222 | } | |
5223 | ||
1020a5c2 BW |
5224 | static void gen8_init_clock_gating(struct drm_device *dev) |
5225 | { | |
5226 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fe4ab3ce | 5227 | enum pipe i; |
1020a5c2 BW |
5228 | |
5229 | I915_WRITE(WM3_LP_ILK, 0); | |
5230 | I915_WRITE(WM2_LP_ILK, 0); | |
5231 | I915_WRITE(WM1_LP_ILK, 0); | |
50ed5fbd BW |
5232 | |
5233 | /* FIXME(BDW): Check all the w/a, some might only apply to | |
5234 | * pre-production hw. */ | |
5235 | ||
fd392b60 BW |
5236 | WARN(!i915_preliminary_hw_support, |
5237 | "GEN8_CENTROID_PIXEL_OPT_DIS not be needed for production\n"); | |
5238 | I915_WRITE(HALF_SLICE_CHICKEN3, | |
5239 | _MASKED_BIT_ENABLE(GEN8_CENTROID_PIXEL_OPT_DIS)); | |
bf66347c BW |
5240 | I915_WRITE(HALF_SLICE_CHICKEN3, |
5241 | _MASKED_BIT_ENABLE(GEN8_SAMPLER_POWER_BYPASS_DIS)); | |
4afe8d33 BW |
5242 | I915_WRITE(GAMTARBMODE, _MASKED_BIT_ENABLE(ARB_MODE_BWGTLB_DISABLE)); |
5243 | ||
7f88da0c BW |
5244 | I915_WRITE(_3D_CHICKEN3, |
5245 | _3D_CHICKEN_SDE_LIMIT_FIFO_POLY_DEPTH(2)); | |
5246 | ||
a75f3628 BW |
5247 | I915_WRITE(COMMON_SLICE_CHICKEN2, |
5248 | _MASKED_BIT_ENABLE(GEN8_CSC2_SBE_VUE_CACHE_CONSERVATIVE)); | |
5249 | ||
4c2e7a5f BW |
5250 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, |
5251 | _MASKED_BIT_ENABLE(GEN7_SINGLE_SUBSCAN_DISPATCH_ENABLE)); | |
5252 | ||
50ed5fbd BW |
5253 | /* WaSwitchSolVfFArbitrationPriority */ |
5254 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); | |
fe4ab3ce BW |
5255 | |
5256 | /* WaPsrDPAMaskVBlankInSRD */ | |
5257 | I915_WRITE(CHICKEN_PAR1_1, | |
5258 | I915_READ(CHICKEN_PAR1_1) | DPA_MASK_VBLANK_SRD); | |
5259 | ||
5260 | /* WaPsrDPRSUnmaskVBlankInSRD */ | |
5261 | for_each_pipe(i) { | |
5262 | I915_WRITE(CHICKEN_PIPESL_1(i), | |
5263 | I915_READ(CHICKEN_PIPESL_1(i) | | |
5264 | DPRS_MASK_VBLANK_SRD)); | |
5265 | } | |
1020a5c2 BW |
5266 | } |
5267 | ||
cad2a2d7 ED |
5268 | static void haswell_init_clock_gating(struct drm_device *dev) |
5269 | { | |
5270 | struct drm_i915_private *dev_priv = dev->dev_private; | |
cad2a2d7 ED |
5271 | |
5272 | I915_WRITE(WM3_LP_ILK, 0); | |
5273 | I915_WRITE(WM2_LP_ILK, 0); | |
5274 | I915_WRITE(WM1_LP_ILK, 0); | |
5275 | ||
5276 | /* According to the spec, bit 13 (RCZUNIT) must be set on IVB. | |
ecdb4eb7 | 5277 | * This implements the WaDisableRCZUnitClockGating:hsw workaround. |
cad2a2d7 ED |
5278 | */ |
5279 | I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE); | |
5280 | ||
ecdb4eb7 | 5281 | /* Apply the WaDisableRHWOOptimizationForRenderHang:hsw workaround. */ |
cad2a2d7 ED |
5282 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
5283 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); | |
5284 | ||
ecdb4eb7 | 5285 | /* WaApplyL3ControlAndL3ChickenMode:hsw */ |
cad2a2d7 ED |
5286 | I915_WRITE(GEN7_L3CNTLREG1, |
5287 | GEN7_WA_FOR_GEN7_L3_CONTROL); | |
5288 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, | |
5289 | GEN7_WA_L3_CHICKEN_MODE); | |
5290 | ||
f3fc4884 FJ |
5291 | /* L3 caching of data atomics doesn't work -- disable it. */ |
5292 | I915_WRITE(HSW_SCRATCH1, HSW_SCRATCH1_L3_DATA_ATOMICS_DISABLE); | |
5293 | I915_WRITE(HSW_ROW_CHICKEN3, | |
5294 | _MASKED_BIT_ENABLE(HSW_ROW_CHICKEN3_L3_GLOBAL_ATOMICS_DISABLE)); | |
5295 | ||
ecdb4eb7 | 5296 | /* This is required by WaCatErrorRejectionIssue:hsw */ |
cad2a2d7 ED |
5297 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
5298 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
5299 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
5300 | ||
ecdb4eb7 | 5301 | /* WaVSRefCountFullforceMissDisable:hsw */ |
cad2a2d7 ED |
5302 | gen7_setup_fixed_func_scheduler(dev_priv); |
5303 | ||
ecdb4eb7 | 5304 | /* WaDisable4x2SubspanOptimization:hsw */ |
cad2a2d7 ED |
5305 | I915_WRITE(CACHE_MODE_1, |
5306 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
1544d9d5 | 5307 | |
ecdb4eb7 | 5308 | /* WaSwitchSolVfFArbitrationPriority:hsw */ |
e3dff585 BW |
5309 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); |
5310 | ||
90a88643 PZ |
5311 | /* WaRsPkgCStateDisplayPMReq:hsw */ |
5312 | I915_WRITE(CHICKEN_PAR1_1, | |
5313 | I915_READ(CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES); | |
1544d9d5 | 5314 | |
17a303ec | 5315 | lpt_init_clock_gating(dev); |
cad2a2d7 ED |
5316 | } |
5317 | ||
1fa61106 | 5318 | static void ivybridge_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5319 | { |
5320 | struct drm_i915_private *dev_priv = dev->dev_private; | |
20848223 | 5321 | uint32_t snpcr; |
6f1d69b0 | 5322 | |
6f1d69b0 ED |
5323 | I915_WRITE(WM3_LP_ILK, 0); |
5324 | I915_WRITE(WM2_LP_ILK, 0); | |
5325 | I915_WRITE(WM1_LP_ILK, 0); | |
5326 | ||
231e54f6 | 5327 | I915_WRITE(ILK_DSPCLK_GATE_D, ILK_VRHUNIT_CLOCK_GATE_DISABLE); |
6f1d69b0 | 5328 | |
ecdb4eb7 | 5329 | /* WaDisableEarlyCull:ivb */ |
87f8020e JB |
5330 | I915_WRITE(_3D_CHICKEN3, |
5331 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
5332 | ||
ecdb4eb7 | 5333 | /* WaDisableBackToBackFlipFix:ivb */ |
6f1d69b0 ED |
5334 | I915_WRITE(IVB_CHICKEN3, |
5335 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
5336 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
5337 | ||
ecdb4eb7 | 5338 | /* WaDisablePSDDualDispatchEnable:ivb */ |
12f3382b JB |
5339 | if (IS_IVB_GT1(dev)) |
5340 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, | |
5341 | _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
5342 | else | |
5343 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1_GT2, | |
5344 | _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
5345 | ||
ecdb4eb7 | 5346 | /* Apply the WaDisableRHWOOptimizationForRenderHang:ivb workaround. */ |
6f1d69b0 ED |
5347 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
5348 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); | |
5349 | ||
ecdb4eb7 | 5350 | /* WaApplyL3ControlAndL3ChickenMode:ivb */ |
6f1d69b0 ED |
5351 | I915_WRITE(GEN7_L3CNTLREG1, |
5352 | GEN7_WA_FOR_GEN7_L3_CONTROL); | |
5353 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, | |
8ab43976 JB |
5354 | GEN7_WA_L3_CHICKEN_MODE); |
5355 | if (IS_IVB_GT1(dev)) | |
5356 | I915_WRITE(GEN7_ROW_CHICKEN2, | |
5357 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
5358 | else | |
5359 | I915_WRITE(GEN7_ROW_CHICKEN2_GT2, | |
5360 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
5361 | ||
6f1d69b0 | 5362 | |
ecdb4eb7 | 5363 | /* WaForceL3Serialization:ivb */ |
61939d97 JB |
5364 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
5365 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
5366 | ||
0f846f81 JB |
5367 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock |
5368 | * gating disable must be set. Failure to set it results in | |
5369 | * flickering pixels due to Z write ordering failures after | |
5370 | * some amount of runtime in the Mesa "fire" demo, and Unigine | |
5371 | * Sanctuary and Tropics, and apparently anything else with | |
5372 | * alpha test or pixel discard. | |
5373 | * | |
5374 | * According to the spec, bit 11 (RCCUNIT) must also be set, | |
5375 | * but we didn't debug actual testcases to find it out. | |
5376 | * | |
5377 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. | |
ecdb4eb7 | 5378 | * This implements the WaDisableRCZUnitClockGating:ivb workaround. |
0f846f81 JB |
5379 | */ |
5380 | I915_WRITE(GEN6_UCGCTL2, | |
5381 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE | | |
5382 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); | |
5383 | ||
ecdb4eb7 | 5384 | /* This is required by WaCatErrorRejectionIssue:ivb */ |
6f1d69b0 ED |
5385 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
5386 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
5387 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
5388 | ||
0e088b8f | 5389 | g4x_disable_trickle_feed(dev); |
6f1d69b0 | 5390 | |
ecdb4eb7 | 5391 | /* WaVSRefCountFullforceMissDisable:ivb */ |
6f1d69b0 | 5392 | gen7_setup_fixed_func_scheduler(dev_priv); |
97e1930f | 5393 | |
ecdb4eb7 | 5394 | /* WaDisable4x2SubspanOptimization:ivb */ |
97e1930f DV |
5395 | I915_WRITE(CACHE_MODE_1, |
5396 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
20848223 BW |
5397 | |
5398 | snpcr = I915_READ(GEN6_MBCUNIT_SNPCR); | |
5399 | snpcr &= ~GEN6_MBC_SNPCR_MASK; | |
5400 | snpcr |= GEN6_MBC_SNPCR_MED; | |
5401 | I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr); | |
3107bd48 | 5402 | |
ab5c608b BW |
5403 | if (!HAS_PCH_NOP(dev)) |
5404 | cpt_init_clock_gating(dev); | |
1d7aaa0c DV |
5405 | |
5406 | gen6_check_mch_setup(dev); | |
6f1d69b0 ED |
5407 | } |
5408 | ||
1fa61106 | 5409 | static void valleyview_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5410 | { |
5411 | struct drm_i915_private *dev_priv = dev->dev_private; | |
85b1d7b3 JB |
5412 | u32 val; |
5413 | ||
5414 | mutex_lock(&dev_priv->rps.hw_lock); | |
5415 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); | |
5416 | mutex_unlock(&dev_priv->rps.hw_lock); | |
5417 | switch ((val >> 6) & 3) { | |
5418 | case 0: | |
85b1d7b3 JB |
5419 | dev_priv->mem_freq = 800; |
5420 | break; | |
f64a28a7 | 5421 | case 1: |
85b1d7b3 JB |
5422 | dev_priv->mem_freq = 1066; |
5423 | break; | |
f64a28a7 | 5424 | case 2: |
85b1d7b3 JB |
5425 | dev_priv->mem_freq = 1333; |
5426 | break; | |
f64a28a7 | 5427 | case 3: |
2325991e | 5428 | dev_priv->mem_freq = 1333; |
f64a28a7 | 5429 | break; |
85b1d7b3 JB |
5430 | } |
5431 | DRM_DEBUG_DRIVER("DDR speed: %d MHz", dev_priv->mem_freq); | |
6f1d69b0 | 5432 | |
d7fe0cc0 | 5433 | I915_WRITE(DSPCLK_GATE_D, VRHUNIT_CLOCK_GATE_DISABLE); |
6f1d69b0 | 5434 | |
ecdb4eb7 | 5435 | /* WaDisableEarlyCull:vlv */ |
87f8020e JB |
5436 | I915_WRITE(_3D_CHICKEN3, |
5437 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); | |
5438 | ||
ecdb4eb7 | 5439 | /* WaDisableBackToBackFlipFix:vlv */ |
6f1d69b0 ED |
5440 | I915_WRITE(IVB_CHICKEN3, |
5441 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | | |
5442 | CHICKEN3_DGMG_DONE_FIX_DISABLE); | |
5443 | ||
ecdb4eb7 | 5444 | /* WaDisablePSDDualDispatchEnable:vlv */ |
12f3382b | 5445 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, |
d3bc0303 JB |
5446 | _MASKED_BIT_ENABLE(GEN7_MAX_PS_THREAD_DEP | |
5447 | GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); | |
12f3382b | 5448 | |
ecdb4eb7 | 5449 | /* Apply the WaDisableRHWOOptimizationForRenderHang:vlv workaround. */ |
6f1d69b0 ED |
5450 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
5451 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); | |
5452 | ||
ecdb4eb7 | 5453 | /* WaApplyL3ControlAndL3ChickenMode:vlv */ |
d0cf5ead | 5454 | I915_WRITE(GEN7_L3CNTLREG1, I915_READ(GEN7_L3CNTLREG1) | GEN7_L3AGDIS); |
6f1d69b0 ED |
5455 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, GEN7_WA_L3_CHICKEN_MODE); |
5456 | ||
ecdb4eb7 | 5457 | /* WaForceL3Serialization:vlv */ |
61939d97 JB |
5458 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
5459 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); | |
5460 | ||
ecdb4eb7 | 5461 | /* WaDisableDopClockGating:vlv */ |
8ab43976 JB |
5462 | I915_WRITE(GEN7_ROW_CHICKEN2, |
5463 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); | |
5464 | ||
ecdb4eb7 | 5465 | /* This is required by WaCatErrorRejectionIssue:vlv */ |
6f1d69b0 ED |
5466 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
5467 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | | |
5468 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); | |
5469 | ||
0f846f81 JB |
5470 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock |
5471 | * gating disable must be set. Failure to set it results in | |
5472 | * flickering pixels due to Z write ordering failures after | |
5473 | * some amount of runtime in the Mesa "fire" demo, and Unigine | |
5474 | * Sanctuary and Tropics, and apparently anything else with | |
5475 | * alpha test or pixel discard. | |
5476 | * | |
5477 | * According to the spec, bit 11 (RCCUNIT) must also be set, | |
5478 | * but we didn't debug actual testcases to find it out. | |
5479 | * | |
5480 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. | |
ecdb4eb7 | 5481 | * This implements the WaDisableRCZUnitClockGating:vlv workaround. |
0f846f81 | 5482 | * |
ecdb4eb7 DL |
5483 | * Also apply WaDisableVDSUnitClockGating:vlv and |
5484 | * WaDisableRCPBUnitClockGating:vlv. | |
0f846f81 JB |
5485 | */ |
5486 | I915_WRITE(GEN6_UCGCTL2, | |
5487 | GEN7_VDSUNIT_CLOCK_GATE_DISABLE | | |
6edaa7fc | 5488 | GEN7_TDLUNIT_CLOCK_GATE_DISABLE | |
0f846f81 JB |
5489 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE | |
5490 | GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | | |
5491 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); | |
5492 | ||
e3f33d46 JB |
5493 | I915_WRITE(GEN7_UCGCTL4, GEN7_L3BANK2X_CLOCK_GATE_DISABLE); |
5494 | ||
e0d8d59b | 5495 | I915_WRITE(MI_ARB_VLV, MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE); |
6f1d69b0 | 5496 | |
6b26c86d DV |
5497 | I915_WRITE(CACHE_MODE_1, |
5498 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); | |
7983117f | 5499 | |
2d809570 | 5500 | /* |
ecdb4eb7 | 5501 | * WaDisableVLVClockGating_VBIIssue:vlv |
2d809570 JB |
5502 | * Disable clock gating on th GCFG unit to prevent a delay |
5503 | * in the reporting of vblank events. | |
5504 | */ | |
4e8c84a5 JB |
5505 | I915_WRITE(VLV_GUNIT_CLOCK_GATE, 0xffffffff); |
5506 | ||
5507 | /* Conservative clock gating settings for now */ | |
5508 | I915_WRITE(0x9400, 0xffffffff); | |
5509 | I915_WRITE(0x9404, 0xffffffff); | |
5510 | I915_WRITE(0x9408, 0xffffffff); | |
5511 | I915_WRITE(0x940c, 0xffffffff); | |
5512 | I915_WRITE(0x9410, 0xffffffff); | |
5513 | I915_WRITE(0x9414, 0xffffffff); | |
5514 | I915_WRITE(0x9418, 0xffffffff); | |
6f1d69b0 ED |
5515 | } |
5516 | ||
1fa61106 | 5517 | static void g4x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5518 | { |
5519 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5520 | uint32_t dspclk_gate; | |
5521 | ||
5522 | I915_WRITE(RENCLK_GATE_D1, 0); | |
5523 | I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE | | |
5524 | GS_UNIT_CLOCK_GATE_DISABLE | | |
5525 | CL_UNIT_CLOCK_GATE_DISABLE); | |
5526 | I915_WRITE(RAMCLK_GATE_D, 0); | |
5527 | dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE | | |
5528 | OVRUNIT_CLOCK_GATE_DISABLE | | |
5529 | OVCUNIT_CLOCK_GATE_DISABLE; | |
5530 | if (IS_GM45(dev)) | |
5531 | dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE; | |
5532 | I915_WRITE(DSPCLK_GATE_D, dspclk_gate); | |
4358a374 DV |
5533 | |
5534 | /* WaDisableRenderCachePipelinedFlush */ | |
5535 | I915_WRITE(CACHE_MODE_0, | |
5536 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); | |
de1aa629 | 5537 | |
0e088b8f | 5538 | g4x_disable_trickle_feed(dev); |
6f1d69b0 ED |
5539 | } |
5540 | ||
1fa61106 | 5541 | static void crestline_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5542 | { |
5543 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5544 | ||
5545 | I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE); | |
5546 | I915_WRITE(RENCLK_GATE_D2, 0); | |
5547 | I915_WRITE(DSPCLK_GATE_D, 0); | |
5548 | I915_WRITE(RAMCLK_GATE_D, 0); | |
5549 | I915_WRITE16(DEUC, 0); | |
20f94967 VS |
5550 | I915_WRITE(MI_ARB_STATE, |
5551 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
5552 | } |
5553 | ||
1fa61106 | 5554 | static void broadwater_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5555 | { |
5556 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5557 | ||
5558 | I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE | | |
5559 | I965_RCC_CLOCK_GATE_DISABLE | | |
5560 | I965_RCPB_CLOCK_GATE_DISABLE | | |
5561 | I965_ISC_CLOCK_GATE_DISABLE | | |
5562 | I965_FBC_CLOCK_GATE_DISABLE); | |
5563 | I915_WRITE(RENCLK_GATE_D2, 0); | |
20f94967 VS |
5564 | I915_WRITE(MI_ARB_STATE, |
5565 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); | |
6f1d69b0 ED |
5566 | } |
5567 | ||
1fa61106 | 5568 | static void gen3_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5569 | { |
5570 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5571 | u32 dstate = I915_READ(D_STATE); | |
5572 | ||
5573 | dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING | | |
5574 | DSTATE_DOT_CLOCK_GATING; | |
5575 | I915_WRITE(D_STATE, dstate); | |
13a86b85 CW |
5576 | |
5577 | if (IS_PINEVIEW(dev)) | |
5578 | I915_WRITE(ECOSKPD, _MASKED_BIT_ENABLE(ECO_GATING_CX_ONLY)); | |
974a3b0f DV |
5579 | |
5580 | /* IIR "flip pending" means done if this bit is set */ | |
5581 | I915_WRITE(ECOSKPD, _MASKED_BIT_DISABLE(ECO_FLIP_DONE)); | |
6f1d69b0 ED |
5582 | } |
5583 | ||
1fa61106 | 5584 | static void i85x_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5585 | { |
5586 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5587 | ||
5588 | I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE); | |
5589 | } | |
5590 | ||
1fa61106 | 5591 | static void i830_init_clock_gating(struct drm_device *dev) |
6f1d69b0 ED |
5592 | { |
5593 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5594 | ||
5595 | I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE); | |
5596 | } | |
5597 | ||
6f1d69b0 ED |
5598 | void intel_init_clock_gating(struct drm_device *dev) |
5599 | { | |
5600 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5601 | ||
5602 | dev_priv->display.init_clock_gating(dev); | |
6f1d69b0 ED |
5603 | } |
5604 | ||
7d708ee4 ID |
5605 | void intel_suspend_hw(struct drm_device *dev) |
5606 | { | |
5607 | if (HAS_PCH_LPT(dev)) | |
5608 | lpt_suspend_hw(dev); | |
5609 | } | |
5610 | ||
c1ca727f ID |
5611 | #define for_each_power_well(i, power_well, domain_mask, power_domains) \ |
5612 | for (i = 0; \ | |
5613 | i < (power_domains)->power_well_count && \ | |
5614 | ((power_well) = &(power_domains)->power_wells[i]); \ | |
5615 | i++) \ | |
5616 | if ((power_well)->domains & (domain_mask)) | |
5617 | ||
5618 | #define for_each_power_well_rev(i, power_well, domain_mask, power_domains) \ | |
5619 | for (i = (power_domains)->power_well_count - 1; \ | |
5620 | i >= 0 && ((power_well) = &(power_domains)->power_wells[i]);\ | |
5621 | i--) \ | |
5622 | if ((power_well)->domains & (domain_mask)) | |
5623 | ||
15d199ea PZ |
5624 | /** |
5625 | * We should only use the power well if we explicitly asked the hardware to | |
5626 | * enable it, so check if it's enabled and also check if we've requested it to | |
5627 | * be enabled. | |
5628 | */ | |
c1ca727f ID |
5629 | static bool hsw_power_well_enabled(struct drm_device *dev, |
5630 | struct i915_power_well *power_well) | |
5631 | { | |
5632 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5633 | ||
5634 | return I915_READ(HSW_PWR_WELL_DRIVER) == | |
5635 | (HSW_PWR_WELL_ENABLE_REQUEST | HSW_PWR_WELL_STATE_ENABLED); | |
5636 | } | |
5637 | ||
b97186f0 PZ |
5638 | bool intel_display_power_enabled(struct drm_device *dev, |
5639 | enum intel_display_power_domain domain) | |
15d199ea PZ |
5640 | { |
5641 | struct drm_i915_private *dev_priv = dev->dev_private; | |
c1ca727f ID |
5642 | struct i915_power_domains *power_domains; |
5643 | struct i915_power_well *power_well; | |
5644 | bool is_enabled; | |
5645 | int i; | |
15d199ea | 5646 | |
b97186f0 PZ |
5647 | if (!HAS_POWER_WELL(dev)) |
5648 | return true; | |
5649 | ||
c1ca727f ID |
5650 | power_domains = &dev_priv->power_domains; |
5651 | ||
5652 | is_enabled = true; | |
5653 | ||
5654 | mutex_lock(&power_domains->lock); | |
5655 | for_each_power_well_rev(i, power_well, BIT(domain), power_domains) { | |
6f3ef5dd ID |
5656 | if (power_well->always_on) |
5657 | continue; | |
5658 | ||
c1ca727f ID |
5659 | if (!power_well->is_enabled(dev, power_well)) { |
5660 | is_enabled = false; | |
5661 | break; | |
5662 | } | |
5663 | } | |
5664 | mutex_unlock(&power_domains->lock); | |
5665 | ||
5666 | return is_enabled; | |
15d199ea PZ |
5667 | } |
5668 | ||
c1ca727f ID |
5669 | static void hsw_set_power_well(struct drm_device *dev, |
5670 | struct i915_power_well *power_well, bool enable) | |
d0d3e513 ED |
5671 | { |
5672 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fa42e23c | 5673 | bool is_enabled, enable_requested; |
596cc11e | 5674 | unsigned long irqflags; |
fa42e23c | 5675 | uint32_t tmp; |
d0d3e513 | 5676 | |
fa42e23c | 5677 | tmp = I915_READ(HSW_PWR_WELL_DRIVER); |
6aedd1f5 PZ |
5678 | is_enabled = tmp & HSW_PWR_WELL_STATE_ENABLED; |
5679 | enable_requested = tmp & HSW_PWR_WELL_ENABLE_REQUEST; | |
d0d3e513 | 5680 | |
fa42e23c PZ |
5681 | if (enable) { |
5682 | if (!enable_requested) | |
6aedd1f5 PZ |
5683 | I915_WRITE(HSW_PWR_WELL_DRIVER, |
5684 | HSW_PWR_WELL_ENABLE_REQUEST); | |
d0d3e513 | 5685 | |
fa42e23c PZ |
5686 | if (!is_enabled) { |
5687 | DRM_DEBUG_KMS("Enabling power well\n"); | |
5688 | if (wait_for((I915_READ(HSW_PWR_WELL_DRIVER) & | |
6aedd1f5 | 5689 | HSW_PWR_WELL_STATE_ENABLED), 20)) |
fa42e23c PZ |
5690 | DRM_ERROR("Timeout enabling power well\n"); |
5691 | } | |
596cc11e BW |
5692 | |
5693 | if (IS_BROADWELL(dev)) { | |
5694 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
5695 | I915_WRITE(GEN8_DE_PIPE_IMR(PIPE_B), | |
5696 | dev_priv->de_irq_mask[PIPE_B]); | |
5697 | I915_WRITE(GEN8_DE_PIPE_IER(PIPE_B), | |
5698 | ~dev_priv->de_irq_mask[PIPE_B] | | |
5699 | GEN8_PIPE_VBLANK); | |
5700 | I915_WRITE(GEN8_DE_PIPE_IMR(PIPE_C), | |
5701 | dev_priv->de_irq_mask[PIPE_C]); | |
5702 | I915_WRITE(GEN8_DE_PIPE_IER(PIPE_C), | |
5703 | ~dev_priv->de_irq_mask[PIPE_C] | | |
5704 | GEN8_PIPE_VBLANK); | |
5705 | POSTING_READ(GEN8_DE_PIPE_IER(PIPE_C)); | |
5706 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
5707 | } | |
fa42e23c PZ |
5708 | } else { |
5709 | if (enable_requested) { | |
9dbd8feb PZ |
5710 | enum pipe p; |
5711 | ||
fa42e23c | 5712 | I915_WRITE(HSW_PWR_WELL_DRIVER, 0); |
9dbd8feb | 5713 | POSTING_READ(HSW_PWR_WELL_DRIVER); |
fa42e23c | 5714 | DRM_DEBUG_KMS("Requesting to disable the power well\n"); |
9dbd8feb PZ |
5715 | |
5716 | /* | |
5717 | * After this, the registers on the pipes that are part | |
5718 | * of the power well will become zero, so we have to | |
5719 | * adjust our counters according to that. | |
5720 | * | |
5721 | * FIXME: Should we do this in general in | |
5722 | * drm_vblank_post_modeset? | |
5723 | */ | |
5724 | spin_lock_irqsave(&dev->vbl_lock, irqflags); | |
5725 | for_each_pipe(p) | |
5726 | if (p != PIPE_A) | |
5380e929 | 5727 | dev->vblank[p].last = 0; |
9dbd8feb | 5728 | spin_unlock_irqrestore(&dev->vbl_lock, irqflags); |
d0d3e513 ED |
5729 | } |
5730 | } | |
fa42e23c | 5731 | } |
d0d3e513 | 5732 | |
b4ed4484 ID |
5733 | static void __intel_power_well_get(struct drm_device *dev, |
5734 | struct i915_power_well *power_well) | |
2d66aef5 | 5735 | { |
c1ca727f ID |
5736 | if (!power_well->count++ && power_well->set) |
5737 | power_well->set(dev, power_well, true); | |
2d66aef5 VS |
5738 | } |
5739 | ||
b4ed4484 ID |
5740 | static void __intel_power_well_put(struct drm_device *dev, |
5741 | struct i915_power_well *power_well) | |
2d66aef5 VS |
5742 | { |
5743 | WARN_ON(!power_well->count); | |
c1ca727f ID |
5744 | |
5745 | if (!--power_well->count && power_well->set && i915_disable_power_well) | |
5746 | power_well->set(dev, power_well, false); | |
2d66aef5 VS |
5747 | } |
5748 | ||
6765625e VS |
5749 | void intel_display_power_get(struct drm_device *dev, |
5750 | enum intel_display_power_domain domain) | |
5751 | { | |
5752 | struct drm_i915_private *dev_priv = dev->dev_private; | |
83c00f55 | 5753 | struct i915_power_domains *power_domains; |
c1ca727f ID |
5754 | struct i915_power_well *power_well; |
5755 | int i; | |
6765625e VS |
5756 | |
5757 | if (!HAS_POWER_WELL(dev)) | |
5758 | return; | |
5759 | ||
83c00f55 ID |
5760 | power_domains = &dev_priv->power_domains; |
5761 | ||
5762 | mutex_lock(&power_domains->lock); | |
c1ca727f ID |
5763 | for_each_power_well(i, power_well, BIT(domain), power_domains) |
5764 | __intel_power_well_get(dev, power_well); | |
83c00f55 | 5765 | mutex_unlock(&power_domains->lock); |
6765625e VS |
5766 | } |
5767 | ||
5768 | void intel_display_power_put(struct drm_device *dev, | |
5769 | enum intel_display_power_domain domain) | |
5770 | { | |
5771 | struct drm_i915_private *dev_priv = dev->dev_private; | |
83c00f55 | 5772 | struct i915_power_domains *power_domains; |
c1ca727f ID |
5773 | struct i915_power_well *power_well; |
5774 | int i; | |
6765625e VS |
5775 | |
5776 | if (!HAS_POWER_WELL(dev)) | |
5777 | return; | |
5778 | ||
83c00f55 ID |
5779 | power_domains = &dev_priv->power_domains; |
5780 | ||
5781 | mutex_lock(&power_domains->lock); | |
c1ca727f ID |
5782 | for_each_power_well_rev(i, power_well, BIT(domain), power_domains) |
5783 | __intel_power_well_put(dev, power_well); | |
83c00f55 | 5784 | mutex_unlock(&power_domains->lock); |
6765625e VS |
5785 | } |
5786 | ||
83c00f55 | 5787 | static struct i915_power_domains *hsw_pwr; |
a38911a3 WX |
5788 | |
5789 | /* Display audio driver power well request */ | |
5790 | void i915_request_power_well(void) | |
5791 | { | |
b4ed4484 ID |
5792 | struct drm_i915_private *dev_priv; |
5793 | ||
a38911a3 WX |
5794 | if (WARN_ON(!hsw_pwr)) |
5795 | return; | |
5796 | ||
b4ed4484 ID |
5797 | dev_priv = container_of(hsw_pwr, struct drm_i915_private, |
5798 | power_domains); | |
fbeeaa23 | 5799 | intel_display_power_get(dev_priv->dev, POWER_DOMAIN_AUDIO); |
a38911a3 WX |
5800 | } |
5801 | EXPORT_SYMBOL_GPL(i915_request_power_well); | |
5802 | ||
5803 | /* Display audio driver power well release */ | |
5804 | void i915_release_power_well(void) | |
5805 | { | |
b4ed4484 ID |
5806 | struct drm_i915_private *dev_priv; |
5807 | ||
a38911a3 WX |
5808 | if (WARN_ON(!hsw_pwr)) |
5809 | return; | |
5810 | ||
b4ed4484 ID |
5811 | dev_priv = container_of(hsw_pwr, struct drm_i915_private, |
5812 | power_domains); | |
fbeeaa23 | 5813 | intel_display_power_put(dev_priv->dev, POWER_DOMAIN_AUDIO); |
a38911a3 WX |
5814 | } |
5815 | EXPORT_SYMBOL_GPL(i915_release_power_well); | |
5816 | ||
c1ca727f | 5817 | static struct i915_power_well hsw_power_wells[] = { |
6f3ef5dd ID |
5818 | { |
5819 | .name = "always-on", | |
5820 | .always_on = 1, | |
5821 | .domains = HSW_ALWAYS_ON_POWER_DOMAINS, | |
5822 | }, | |
c1ca727f ID |
5823 | { |
5824 | .name = "display", | |
5825 | .domains = POWER_DOMAIN_MASK & ~HSW_ALWAYS_ON_POWER_DOMAINS, | |
5826 | .is_enabled = hsw_power_well_enabled, | |
5827 | .set = hsw_set_power_well, | |
5828 | }, | |
5829 | }; | |
5830 | ||
5831 | static struct i915_power_well bdw_power_wells[] = { | |
6f3ef5dd ID |
5832 | { |
5833 | .name = "always-on", | |
5834 | .always_on = 1, | |
5835 | .domains = BDW_ALWAYS_ON_POWER_DOMAINS, | |
5836 | }, | |
c1ca727f ID |
5837 | { |
5838 | .name = "display", | |
5839 | .domains = POWER_DOMAIN_MASK & ~BDW_ALWAYS_ON_POWER_DOMAINS, | |
5840 | .is_enabled = hsw_power_well_enabled, | |
5841 | .set = hsw_set_power_well, | |
5842 | }, | |
5843 | }; | |
5844 | ||
5845 | #define set_power_wells(power_domains, __power_wells) ({ \ | |
5846 | (power_domains)->power_wells = (__power_wells); \ | |
5847 | (power_domains)->power_well_count = ARRAY_SIZE(__power_wells); \ | |
5848 | }) | |
5849 | ||
ddb642fb | 5850 | int intel_power_domains_init(struct drm_device *dev) |
a38911a3 WX |
5851 | { |
5852 | struct drm_i915_private *dev_priv = dev->dev_private; | |
83c00f55 | 5853 | struct i915_power_domains *power_domains = &dev_priv->power_domains; |
c1ca727f ID |
5854 | |
5855 | if (!HAS_POWER_WELL(dev)) | |
5856 | return 0; | |
a38911a3 | 5857 | |
83c00f55 | 5858 | mutex_init(&power_domains->lock); |
a38911a3 | 5859 | |
c1ca727f ID |
5860 | /* |
5861 | * The enabling order will be from lower to higher indexed wells, | |
5862 | * the disabling order is reversed. | |
5863 | */ | |
5864 | if (IS_HASWELL(dev)) { | |
5865 | set_power_wells(power_domains, hsw_power_wells); | |
5866 | hsw_pwr = power_domains; | |
5867 | } else if (IS_BROADWELL(dev)) { | |
5868 | set_power_wells(power_domains, bdw_power_wells); | |
5869 | hsw_pwr = power_domains; | |
5870 | } else { | |
5871 | WARN_ON(1); | |
5872 | } | |
a38911a3 WX |
5873 | |
5874 | return 0; | |
5875 | } | |
5876 | ||
ddb642fb | 5877 | void intel_power_domains_remove(struct drm_device *dev) |
a38911a3 WX |
5878 | { |
5879 | hsw_pwr = NULL; | |
5880 | } | |
5881 | ||
ddb642fb | 5882 | static void intel_power_domains_resume(struct drm_device *dev) |
9cdb826c VS |
5883 | { |
5884 | struct drm_i915_private *dev_priv = dev->dev_private; | |
83c00f55 ID |
5885 | struct i915_power_domains *power_domains = &dev_priv->power_domains; |
5886 | struct i915_power_well *power_well; | |
c1ca727f | 5887 | int i; |
9cdb826c VS |
5888 | |
5889 | if (!HAS_POWER_WELL(dev)) | |
5890 | return; | |
5891 | ||
83c00f55 | 5892 | mutex_lock(&power_domains->lock); |
c1ca727f ID |
5893 | for_each_power_well(i, power_well, POWER_DOMAIN_MASK, power_domains) { |
5894 | if (power_well->set) | |
5895 | power_well->set(dev, power_well, power_well->count > 0); | |
5896 | } | |
83c00f55 | 5897 | mutex_unlock(&power_domains->lock); |
a38911a3 WX |
5898 | } |
5899 | ||
fa42e23c PZ |
5900 | /* |
5901 | * Starting with Haswell, we have a "Power Down Well" that can be turned off | |
5902 | * when not needed anymore. We have 4 registers that can request the power well | |
5903 | * to be enabled, and it will only be disabled if none of the registers is | |
5904 | * requesting it to be enabled. | |
d0d3e513 | 5905 | */ |
ddb642fb | 5906 | void intel_power_domains_init_hw(struct drm_device *dev) |
d0d3e513 ED |
5907 | { |
5908 | struct drm_i915_private *dev_priv = dev->dev_private; | |
d0d3e513 | 5909 | |
86d52df6 | 5910 | if (!HAS_POWER_WELL(dev)) |
d0d3e513 ED |
5911 | return; |
5912 | ||
fa42e23c | 5913 | /* For now, we need the power well to be always enabled. */ |
baa70707 | 5914 | intel_display_set_init_power(dev, true); |
ddb642fb | 5915 | intel_power_domains_resume(dev); |
d0d3e513 | 5916 | |
f7243ac9 ID |
5917 | if (!(IS_HASWELL(dev) || IS_BROADWELL(dev))) |
5918 | return; | |
5919 | ||
fa42e23c PZ |
5920 | /* We're taking over the BIOS, so clear any requests made by it since |
5921 | * the driver is in charge now. */ | |
6aedd1f5 | 5922 | if (I915_READ(HSW_PWR_WELL_BIOS) & HSW_PWR_WELL_ENABLE_REQUEST) |
fa42e23c | 5923 | I915_WRITE(HSW_PWR_WELL_BIOS, 0); |
d0d3e513 ED |
5924 | } |
5925 | ||
c67a470b PZ |
5926 | /* Disables PC8 so we can use the GMBUS and DP AUX interrupts. */ |
5927 | void intel_aux_display_runtime_get(struct drm_i915_private *dev_priv) | |
5928 | { | |
5929 | hsw_disable_package_c8(dev_priv); | |
5930 | } | |
5931 | ||
5932 | void intel_aux_display_runtime_put(struct drm_i915_private *dev_priv) | |
5933 | { | |
5934 | hsw_enable_package_c8(dev_priv); | |
5935 | } | |
5936 | ||
1fa61106 ED |
5937 | /* Set up chip specific power management-related functions */ |
5938 | void intel_init_pm(struct drm_device *dev) | |
5939 | { | |
5940 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5941 | ||
5942 | if (I915_HAS_FBC(dev)) { | |
5943 | if (HAS_PCH_SPLIT(dev)) { | |
5944 | dev_priv->display.fbc_enabled = ironlake_fbc_enabled; | |
891348b2 | 5945 | if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) |
abe959c7 RV |
5946 | dev_priv->display.enable_fbc = |
5947 | gen7_enable_fbc; | |
5948 | else | |
5949 | dev_priv->display.enable_fbc = | |
5950 | ironlake_enable_fbc; | |
1fa61106 ED |
5951 | dev_priv->display.disable_fbc = ironlake_disable_fbc; |
5952 | } else if (IS_GM45(dev)) { | |
5953 | dev_priv->display.fbc_enabled = g4x_fbc_enabled; | |
5954 | dev_priv->display.enable_fbc = g4x_enable_fbc; | |
5955 | dev_priv->display.disable_fbc = g4x_disable_fbc; | |
5956 | } else if (IS_CRESTLINE(dev)) { | |
5957 | dev_priv->display.fbc_enabled = i8xx_fbc_enabled; | |
5958 | dev_priv->display.enable_fbc = i8xx_enable_fbc; | |
5959 | dev_priv->display.disable_fbc = i8xx_disable_fbc; | |
5960 | } | |
5961 | /* 855GM needs testing */ | |
5962 | } | |
5963 | ||
c921aba8 DV |
5964 | /* For cxsr */ |
5965 | if (IS_PINEVIEW(dev)) | |
5966 | i915_pineview_get_mem_freq(dev); | |
5967 | else if (IS_GEN5(dev)) | |
5968 | i915_ironlake_get_mem_freq(dev); | |
5969 | ||
1fa61106 ED |
5970 | /* For FIFO watermark updates */ |
5971 | if (HAS_PCH_SPLIT(dev)) { | |
53615a5e VS |
5972 | intel_setup_wm_latency(dev); |
5973 | ||
1fa61106 | 5974 | if (IS_GEN5(dev)) { |
53615a5e VS |
5975 | if (dev_priv->wm.pri_latency[1] && |
5976 | dev_priv->wm.spr_latency[1] && | |
5977 | dev_priv->wm.cur_latency[1]) | |
1fa61106 ED |
5978 | dev_priv->display.update_wm = ironlake_update_wm; |
5979 | else { | |
5980 | DRM_DEBUG_KMS("Failed to get proper latency. " | |
5981 | "Disable CxSR\n"); | |
5982 | dev_priv->display.update_wm = NULL; | |
5983 | } | |
5984 | dev_priv->display.init_clock_gating = ironlake_init_clock_gating; | |
5985 | } else if (IS_GEN6(dev)) { | |
53615a5e VS |
5986 | if (dev_priv->wm.pri_latency[0] && |
5987 | dev_priv->wm.spr_latency[0] && | |
5988 | dev_priv->wm.cur_latency[0]) { | |
1fa61106 ED |
5989 | dev_priv->display.update_wm = sandybridge_update_wm; |
5990 | dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm; | |
5991 | } else { | |
5992 | DRM_DEBUG_KMS("Failed to read display plane latency. " | |
5993 | "Disable CxSR\n"); | |
5994 | dev_priv->display.update_wm = NULL; | |
5995 | } | |
5996 | dev_priv->display.init_clock_gating = gen6_init_clock_gating; | |
5997 | } else if (IS_IVYBRIDGE(dev)) { | |
53615a5e VS |
5998 | if (dev_priv->wm.pri_latency[0] && |
5999 | dev_priv->wm.spr_latency[0] && | |
6000 | dev_priv->wm.cur_latency[0]) { | |
c43d0188 | 6001 | dev_priv->display.update_wm = ivybridge_update_wm; |
1fa61106 ED |
6002 | dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm; |
6003 | } else { | |
6004 | DRM_DEBUG_KMS("Failed to read display plane latency. " | |
6005 | "Disable CxSR\n"); | |
6006 | dev_priv->display.update_wm = NULL; | |
6007 | } | |
6008 | dev_priv->display.init_clock_gating = ivybridge_init_clock_gating; | |
6b8a5eeb | 6009 | } else if (IS_HASWELL(dev)) { |
53615a5e VS |
6010 | if (dev_priv->wm.pri_latency[0] && |
6011 | dev_priv->wm.spr_latency[0] && | |
6012 | dev_priv->wm.cur_latency[0]) { | |
1011d8c4 | 6013 | dev_priv->display.update_wm = haswell_update_wm; |
526682e9 PZ |
6014 | dev_priv->display.update_sprite_wm = |
6015 | haswell_update_sprite_wm; | |
6b8a5eeb ED |
6016 | } else { |
6017 | DRM_DEBUG_KMS("Failed to read display plane latency. " | |
6018 | "Disable CxSR\n"); | |
6019 | dev_priv->display.update_wm = NULL; | |
6020 | } | |
cad2a2d7 | 6021 | dev_priv->display.init_clock_gating = haswell_init_clock_gating; |
1020a5c2 BW |
6022 | } else if (INTEL_INFO(dev)->gen == 8) { |
6023 | dev_priv->display.init_clock_gating = gen8_init_clock_gating; | |
1fa61106 ED |
6024 | } else |
6025 | dev_priv->display.update_wm = NULL; | |
6026 | } else if (IS_VALLEYVIEW(dev)) { | |
6027 | dev_priv->display.update_wm = valleyview_update_wm; | |
6028 | dev_priv->display.init_clock_gating = | |
6029 | valleyview_init_clock_gating; | |
1fa61106 ED |
6030 | } else if (IS_PINEVIEW(dev)) { |
6031 | if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev), | |
6032 | dev_priv->is_ddr3, | |
6033 | dev_priv->fsb_freq, | |
6034 | dev_priv->mem_freq)) { | |
6035 | DRM_INFO("failed to find known CxSR latency " | |
6036 | "(found ddr%s fsb freq %d, mem freq %d), " | |
6037 | "disabling CxSR\n", | |
6038 | (dev_priv->is_ddr3 == 1) ? "3" : "2", | |
6039 | dev_priv->fsb_freq, dev_priv->mem_freq); | |
6040 | /* Disable CxSR and never update its watermark again */ | |
6041 | pineview_disable_cxsr(dev); | |
6042 | dev_priv->display.update_wm = NULL; | |
6043 | } else | |
6044 | dev_priv->display.update_wm = pineview_update_wm; | |
6045 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; | |
6046 | } else if (IS_G4X(dev)) { | |
6047 | dev_priv->display.update_wm = g4x_update_wm; | |
6048 | dev_priv->display.init_clock_gating = g4x_init_clock_gating; | |
6049 | } else if (IS_GEN4(dev)) { | |
6050 | dev_priv->display.update_wm = i965_update_wm; | |
6051 | if (IS_CRESTLINE(dev)) | |
6052 | dev_priv->display.init_clock_gating = crestline_init_clock_gating; | |
6053 | else if (IS_BROADWATER(dev)) | |
6054 | dev_priv->display.init_clock_gating = broadwater_init_clock_gating; | |
6055 | } else if (IS_GEN3(dev)) { | |
6056 | dev_priv->display.update_wm = i9xx_update_wm; | |
6057 | dev_priv->display.get_fifo_size = i9xx_get_fifo_size; | |
6058 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; | |
6059 | } else if (IS_I865G(dev)) { | |
6060 | dev_priv->display.update_wm = i830_update_wm; | |
6061 | dev_priv->display.init_clock_gating = i85x_init_clock_gating; | |
6062 | dev_priv->display.get_fifo_size = i830_get_fifo_size; | |
6063 | } else if (IS_I85X(dev)) { | |
6064 | dev_priv->display.update_wm = i9xx_update_wm; | |
6065 | dev_priv->display.get_fifo_size = i85x_get_fifo_size; | |
6066 | dev_priv->display.init_clock_gating = i85x_init_clock_gating; | |
6067 | } else { | |
6068 | dev_priv->display.update_wm = i830_update_wm; | |
6069 | dev_priv->display.init_clock_gating = i830_init_clock_gating; | |
6070 | if (IS_845G(dev)) | |
6071 | dev_priv->display.get_fifo_size = i845_get_fifo_size; | |
6072 | else | |
6073 | dev_priv->display.get_fifo_size = i830_get_fifo_size; | |
6074 | } | |
6075 | } | |
6076 | ||
42c0526c BW |
6077 | int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u8 mbox, u32 *val) |
6078 | { | |
4fc688ce | 6079 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c BW |
6080 | |
6081 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
6082 | DRM_DEBUG_DRIVER("warning: pcode (read) mailbox access failed\n"); | |
6083 | return -EAGAIN; | |
6084 | } | |
6085 | ||
6086 | I915_WRITE(GEN6_PCODE_DATA, *val); | |
6087 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); | |
6088 | ||
6089 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, | |
6090 | 500)) { | |
6091 | DRM_ERROR("timeout waiting for pcode read (%d) to finish\n", mbox); | |
6092 | return -ETIMEDOUT; | |
6093 | } | |
6094 | ||
6095 | *val = I915_READ(GEN6_PCODE_DATA); | |
6096 | I915_WRITE(GEN6_PCODE_DATA, 0); | |
6097 | ||
6098 | return 0; | |
6099 | } | |
6100 | ||
6101 | int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val) | |
6102 | { | |
4fc688ce | 6103 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
42c0526c BW |
6104 | |
6105 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { | |
6106 | DRM_DEBUG_DRIVER("warning: pcode (write) mailbox access failed\n"); | |
6107 | return -EAGAIN; | |
6108 | } | |
6109 | ||
6110 | I915_WRITE(GEN6_PCODE_DATA, val); | |
6111 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); | |
6112 | ||
6113 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, | |
6114 | 500)) { | |
6115 | DRM_ERROR("timeout waiting for pcode write (%d) to finish\n", mbox); | |
6116 | return -ETIMEDOUT; | |
6117 | } | |
6118 | ||
6119 | I915_WRITE(GEN6_PCODE_DATA, 0); | |
6120 | ||
6121 | return 0; | |
6122 | } | |
a0e4e199 | 6123 | |
2ec3815f | 6124 | int vlv_gpu_freq(struct drm_i915_private *dev_priv, int val) |
855ba3be | 6125 | { |
07ab118b | 6126 | int div; |
855ba3be | 6127 | |
07ab118b | 6128 | /* 4 x czclk */ |
2ec3815f | 6129 | switch (dev_priv->mem_freq) { |
855ba3be | 6130 | case 800: |
07ab118b | 6131 | div = 10; |
855ba3be JB |
6132 | break; |
6133 | case 1066: | |
07ab118b | 6134 | div = 12; |
855ba3be JB |
6135 | break; |
6136 | case 1333: | |
07ab118b | 6137 | div = 16; |
855ba3be JB |
6138 | break; |
6139 | default: | |
6140 | return -1; | |
6141 | } | |
6142 | ||
2ec3815f | 6143 | return DIV_ROUND_CLOSEST(dev_priv->mem_freq * (val + 6 - 0xbd), 4 * div); |
855ba3be JB |
6144 | } |
6145 | ||
2ec3815f | 6146 | int vlv_freq_opcode(struct drm_i915_private *dev_priv, int val) |
855ba3be | 6147 | { |
07ab118b | 6148 | int mul; |
855ba3be | 6149 | |
07ab118b | 6150 | /* 4 x czclk */ |
2ec3815f | 6151 | switch (dev_priv->mem_freq) { |
855ba3be | 6152 | case 800: |
07ab118b | 6153 | mul = 10; |
855ba3be JB |
6154 | break; |
6155 | case 1066: | |
07ab118b | 6156 | mul = 12; |
855ba3be JB |
6157 | break; |
6158 | case 1333: | |
07ab118b | 6159 | mul = 16; |
855ba3be JB |
6160 | break; |
6161 | default: | |
6162 | return -1; | |
6163 | } | |
6164 | ||
2ec3815f | 6165 | return DIV_ROUND_CLOSEST(4 * mul * val, dev_priv->mem_freq) + 0xbd - 6; |
855ba3be JB |
6166 | } |
6167 | ||
907b28c5 CW |
6168 | void intel_pm_init(struct drm_device *dev) |
6169 | { | |
6170 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6171 | ||
6172 | INIT_DELAYED_WORK(&dev_priv->rps.delayed_resume_work, | |
6173 | intel_gen6_powersave_work); | |
6174 | } |