2 * Copyright © 2006-2007 Intel Corporation
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:
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
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
21 * DEALINGS IN THE SOFTWARE.
24 * Eric Anholt <eric@anholt.net>
27 #include <linux/module.h>
28 #include <linux/input.h>
29 #include <linux/i2c.h>
30 #include <linux/kernel.h>
31 #include <linux/slab.h>
32 #include <linux/vgaarb.h>
34 #include "intel_drv.h"
37 #include "i915_trace.h"
38 #include "drm_dp_helper.h"
40 #include "drm_crtc_helper.h"
42 #define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
44 bool intel_pipe_has_type (struct drm_crtc *crtc, int type);
45 static void intel_update_watermarks(struct drm_device *dev);
46 static void intel_increase_pllclock(struct drm_crtc *crtc);
47 static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
70 #define INTEL_P2_NUM 2
71 typedef struct intel_limit intel_limit_t;
73 intel_range_t dot, vco, n, m, m1, m2, p, p1;
75 bool (* find_pll)(const intel_limit_t *, struct drm_crtc *,
76 int, int, intel_clock_t *);
80 #define IRONLAKE_FDI_FREQ 2700000 /* in kHz for mode->clock */
83 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
84 int target, int refclk, intel_clock_t *best_clock);
86 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
87 int target, int refclk, intel_clock_t *best_clock);
90 intel_find_pll_g4x_dp(const intel_limit_t *, struct drm_crtc *crtc,
91 int target, int refclk, intel_clock_t *best_clock);
93 intel_find_pll_ironlake_dp(const intel_limit_t *, struct drm_crtc *crtc,
94 int target, int refclk, intel_clock_t *best_clock);
96 static inline u32 /* units of 100MHz */
97 intel_fdi_link_freq(struct drm_device *dev)
100 struct drm_i915_private *dev_priv = dev->dev_private;
101 return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
106 static const intel_limit_t intel_limits_i8xx_dvo = {
107 .dot = { .min = 25000, .max = 350000 },
108 .vco = { .min = 930000, .max = 1400000 },
109 .n = { .min = 3, .max = 16 },
110 .m = { .min = 96, .max = 140 },
111 .m1 = { .min = 18, .max = 26 },
112 .m2 = { .min = 6, .max = 16 },
113 .p = { .min = 4, .max = 128 },
114 .p1 = { .min = 2, .max = 33 },
115 .p2 = { .dot_limit = 165000,
116 .p2_slow = 4, .p2_fast = 2 },
117 .find_pll = intel_find_best_PLL,
120 static const intel_limit_t intel_limits_i8xx_lvds = {
121 .dot = { .min = 25000, .max = 350000 },
122 .vco = { .min = 930000, .max = 1400000 },
123 .n = { .min = 3, .max = 16 },
124 .m = { .min = 96, .max = 140 },
125 .m1 = { .min = 18, .max = 26 },
126 .m2 = { .min = 6, .max = 16 },
127 .p = { .min = 4, .max = 128 },
128 .p1 = { .min = 1, .max = 6 },
129 .p2 = { .dot_limit = 165000,
130 .p2_slow = 14, .p2_fast = 7 },
131 .find_pll = intel_find_best_PLL,
134 static const intel_limit_t intel_limits_i9xx_sdvo = {
135 .dot = { .min = 20000, .max = 400000 },
136 .vco = { .min = 1400000, .max = 2800000 },
137 .n = { .min = 1, .max = 6 },
138 .m = { .min = 70, .max = 120 },
139 .m1 = { .min = 10, .max = 22 },
140 .m2 = { .min = 5, .max = 9 },
141 .p = { .min = 5, .max = 80 },
142 .p1 = { .min = 1, .max = 8 },
143 .p2 = { .dot_limit = 200000,
144 .p2_slow = 10, .p2_fast = 5 },
145 .find_pll = intel_find_best_PLL,
148 static const intel_limit_t intel_limits_i9xx_lvds = {
149 .dot = { .min = 20000, .max = 400000 },
150 .vco = { .min = 1400000, .max = 2800000 },
151 .n = { .min = 1, .max = 6 },
152 .m = { .min = 70, .max = 120 },
153 .m1 = { .min = 10, .max = 22 },
154 .m2 = { .min = 5, .max = 9 },
155 .p = { .min = 7, .max = 98 },
156 .p1 = { .min = 1, .max = 8 },
157 .p2 = { .dot_limit = 112000,
158 .p2_slow = 14, .p2_fast = 7 },
159 .find_pll = intel_find_best_PLL,
163 static const intel_limit_t intel_limits_g4x_sdvo = {
164 .dot = { .min = 25000, .max = 270000 },
165 .vco = { .min = 1750000, .max = 3500000},
166 .n = { .min = 1, .max = 4 },
167 .m = { .min = 104, .max = 138 },
168 .m1 = { .min = 17, .max = 23 },
169 .m2 = { .min = 5, .max = 11 },
170 .p = { .min = 10, .max = 30 },
171 .p1 = { .min = 1, .max = 3},
172 .p2 = { .dot_limit = 270000,
176 .find_pll = intel_g4x_find_best_PLL,
179 static const intel_limit_t intel_limits_g4x_hdmi = {
180 .dot = { .min = 22000, .max = 400000 },
181 .vco = { .min = 1750000, .max = 3500000},
182 .n = { .min = 1, .max = 4 },
183 .m = { .min = 104, .max = 138 },
184 .m1 = { .min = 16, .max = 23 },
185 .m2 = { .min = 5, .max = 11 },
186 .p = { .min = 5, .max = 80 },
187 .p1 = { .min = 1, .max = 8},
188 .p2 = { .dot_limit = 165000,
189 .p2_slow = 10, .p2_fast = 5 },
190 .find_pll = intel_g4x_find_best_PLL,
193 static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
194 .dot = { .min = 20000, .max = 115000 },
195 .vco = { .min = 1750000, .max = 3500000 },
196 .n = { .min = 1, .max = 3 },
197 .m = { .min = 104, .max = 138 },
198 .m1 = { .min = 17, .max = 23 },
199 .m2 = { .min = 5, .max = 11 },
200 .p = { .min = 28, .max = 112 },
201 .p1 = { .min = 2, .max = 8 },
202 .p2 = { .dot_limit = 0,
203 .p2_slow = 14, .p2_fast = 14
205 .find_pll = intel_g4x_find_best_PLL,
208 static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
209 .dot = { .min = 80000, .max = 224000 },
210 .vco = { .min = 1750000, .max = 3500000 },
211 .n = { .min = 1, .max = 3 },
212 .m = { .min = 104, .max = 138 },
213 .m1 = { .min = 17, .max = 23 },
214 .m2 = { .min = 5, .max = 11 },
215 .p = { .min = 14, .max = 42 },
216 .p1 = { .min = 2, .max = 6 },
217 .p2 = { .dot_limit = 0,
218 .p2_slow = 7, .p2_fast = 7
220 .find_pll = intel_g4x_find_best_PLL,
223 static const intel_limit_t intel_limits_g4x_display_port = {
224 .dot = { .min = 161670, .max = 227000 },
225 .vco = { .min = 1750000, .max = 3500000},
226 .n = { .min = 1, .max = 2 },
227 .m = { .min = 97, .max = 108 },
228 .m1 = { .min = 0x10, .max = 0x12 },
229 .m2 = { .min = 0x05, .max = 0x06 },
230 .p = { .min = 10, .max = 20 },
231 .p1 = { .min = 1, .max = 2},
232 .p2 = { .dot_limit = 0,
233 .p2_slow = 10, .p2_fast = 10 },
234 .find_pll = intel_find_pll_g4x_dp,
237 static const intel_limit_t intel_limits_pineview_sdvo = {
238 .dot = { .min = 20000, .max = 400000},
239 .vco = { .min = 1700000, .max = 3500000 },
240 /* Pineview's Ncounter is a ring counter */
241 .n = { .min = 3, .max = 6 },
242 .m = { .min = 2, .max = 256 },
243 /* Pineview only has one combined m divider, which we treat as m2. */
244 .m1 = { .min = 0, .max = 0 },
245 .m2 = { .min = 0, .max = 254 },
246 .p = { .min = 5, .max = 80 },
247 .p1 = { .min = 1, .max = 8 },
248 .p2 = { .dot_limit = 200000,
249 .p2_slow = 10, .p2_fast = 5 },
250 .find_pll = intel_find_best_PLL,
253 static const intel_limit_t intel_limits_pineview_lvds = {
254 .dot = { .min = 20000, .max = 400000 },
255 .vco = { .min = 1700000, .max = 3500000 },
256 .n = { .min = 3, .max = 6 },
257 .m = { .min = 2, .max = 256 },
258 .m1 = { .min = 0, .max = 0 },
259 .m2 = { .min = 0, .max = 254 },
260 .p = { .min = 7, .max = 112 },
261 .p1 = { .min = 1, .max = 8 },
262 .p2 = { .dot_limit = 112000,
263 .p2_slow = 14, .p2_fast = 14 },
264 .find_pll = intel_find_best_PLL,
267 /* Ironlake / Sandybridge
269 * We calculate clock using (register_value + 2) for N/M1/M2, so here
270 * the range value for them is (actual_value - 2).
272 static const intel_limit_t intel_limits_ironlake_dac = {
273 .dot = { .min = 25000, .max = 350000 },
274 .vco = { .min = 1760000, .max = 3510000 },
275 .n = { .min = 1, .max = 5 },
276 .m = { .min = 79, .max = 127 },
277 .m1 = { .min = 12, .max = 22 },
278 .m2 = { .min = 5, .max = 9 },
279 .p = { .min = 5, .max = 80 },
280 .p1 = { .min = 1, .max = 8 },
281 .p2 = { .dot_limit = 225000,
282 .p2_slow = 10, .p2_fast = 5 },
283 .find_pll = intel_g4x_find_best_PLL,
286 static const intel_limit_t intel_limits_ironlake_single_lvds = {
287 .dot = { .min = 25000, .max = 350000 },
288 .vco = { .min = 1760000, .max = 3510000 },
289 .n = { .min = 1, .max = 3 },
290 .m = { .min = 79, .max = 118 },
291 .m1 = { .min = 12, .max = 22 },
292 .m2 = { .min = 5, .max = 9 },
293 .p = { .min = 28, .max = 112 },
294 .p1 = { .min = 2, .max = 8 },
295 .p2 = { .dot_limit = 225000,
296 .p2_slow = 14, .p2_fast = 14 },
297 .find_pll = intel_g4x_find_best_PLL,
300 static const intel_limit_t intel_limits_ironlake_dual_lvds = {
301 .dot = { .min = 25000, .max = 350000 },
302 .vco = { .min = 1760000, .max = 3510000 },
303 .n = { .min = 1, .max = 3 },
304 .m = { .min = 79, .max = 127 },
305 .m1 = { .min = 12, .max = 22 },
306 .m2 = { .min = 5, .max = 9 },
307 .p = { .min = 14, .max = 56 },
308 .p1 = { .min = 2, .max = 8 },
309 .p2 = { .dot_limit = 225000,
310 .p2_slow = 7, .p2_fast = 7 },
311 .find_pll = intel_g4x_find_best_PLL,
314 /* LVDS 100mhz refclk limits. */
315 static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
316 .dot = { .min = 25000, .max = 350000 },
317 .vco = { .min = 1760000, .max = 3510000 },
318 .n = { .min = 1, .max = 2 },
319 .m = { .min = 79, .max = 126 },
320 .m1 = { .min = 12, .max = 22 },
321 .m2 = { .min = 5, .max = 9 },
322 .p = { .min = 28, .max = 112 },
323 .p1 = { .min = 2,.max = 8 },
324 .p2 = { .dot_limit = 225000,
325 .p2_slow = 14, .p2_fast = 14 },
326 .find_pll = intel_g4x_find_best_PLL,
329 static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
330 .dot = { .min = 25000, .max = 350000 },
331 .vco = { .min = 1760000, .max = 3510000 },
332 .n = { .min = 1, .max = 3 },
333 .m = { .min = 79, .max = 126 },
334 .m1 = { .min = 12, .max = 22 },
335 .m2 = { .min = 5, .max = 9 },
336 .p = { .min = 14, .max = 42 },
337 .p1 = { .min = 2,.max = 6 },
338 .p2 = { .dot_limit = 225000,
339 .p2_slow = 7, .p2_fast = 7 },
340 .find_pll = intel_g4x_find_best_PLL,
343 static const intel_limit_t intel_limits_ironlake_display_port = {
344 .dot = { .min = 25000, .max = 350000 },
345 .vco = { .min = 1760000, .max = 3510000},
346 .n = { .min = 1, .max = 2 },
347 .m = { .min = 81, .max = 90 },
348 .m1 = { .min = 12, .max = 22 },
349 .m2 = { .min = 5, .max = 9 },
350 .p = { .min = 10, .max = 20 },
351 .p1 = { .min = 1, .max = 2},
352 .p2 = { .dot_limit = 0,
353 .p2_slow = 10, .p2_fast = 10 },
354 .find_pll = intel_find_pll_ironlake_dp,
357 static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc,
360 struct drm_device *dev = crtc->dev;
361 struct drm_i915_private *dev_priv = dev->dev_private;
362 const intel_limit_t *limit;
364 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
365 if ((I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) ==
366 LVDS_CLKB_POWER_UP) {
367 /* LVDS dual channel */
368 if (refclk == 100000)
369 limit = &intel_limits_ironlake_dual_lvds_100m;
371 limit = &intel_limits_ironlake_dual_lvds;
373 if (refclk == 100000)
374 limit = &intel_limits_ironlake_single_lvds_100m;
376 limit = &intel_limits_ironlake_single_lvds;
378 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
380 limit = &intel_limits_ironlake_display_port;
382 limit = &intel_limits_ironlake_dac;
387 static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
389 struct drm_device *dev = crtc->dev;
390 struct drm_i915_private *dev_priv = dev->dev_private;
391 const intel_limit_t *limit;
393 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
394 if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
396 /* LVDS with dual channel */
397 limit = &intel_limits_g4x_dual_channel_lvds;
399 /* LVDS with dual channel */
400 limit = &intel_limits_g4x_single_channel_lvds;
401 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
402 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
403 limit = &intel_limits_g4x_hdmi;
404 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
405 limit = &intel_limits_g4x_sdvo;
406 } else if (intel_pipe_has_type (crtc, INTEL_OUTPUT_DISPLAYPORT)) {
407 limit = &intel_limits_g4x_display_port;
408 } else /* The option is for other outputs */
409 limit = &intel_limits_i9xx_sdvo;
414 static const intel_limit_t *intel_limit(struct drm_crtc *crtc, int refclk)
416 struct drm_device *dev = crtc->dev;
417 const intel_limit_t *limit;
419 if (HAS_PCH_SPLIT(dev))
420 limit = intel_ironlake_limit(crtc, refclk);
421 else if (IS_G4X(dev)) {
422 limit = intel_g4x_limit(crtc);
423 } else if (IS_PINEVIEW(dev)) {
424 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
425 limit = &intel_limits_pineview_lvds;
427 limit = &intel_limits_pineview_sdvo;
428 } else if (!IS_GEN2(dev)) {
429 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
430 limit = &intel_limits_i9xx_lvds;
432 limit = &intel_limits_i9xx_sdvo;
434 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
435 limit = &intel_limits_i8xx_lvds;
437 limit = &intel_limits_i8xx_dvo;
442 /* m1 is reserved as 0 in Pineview, n is a ring counter */
443 static void pineview_clock(int refclk, intel_clock_t *clock)
445 clock->m = clock->m2 + 2;
446 clock->p = clock->p1 * clock->p2;
447 clock->vco = refclk * clock->m / clock->n;
448 clock->dot = clock->vco / clock->p;
451 static void intel_clock(struct drm_device *dev, int refclk, intel_clock_t *clock)
453 if (IS_PINEVIEW(dev)) {
454 pineview_clock(refclk, clock);
457 clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
458 clock->p = clock->p1 * clock->p2;
459 clock->vco = refclk * clock->m / (clock->n + 2);
460 clock->dot = clock->vco / clock->p;
464 * Returns whether any output on the specified pipe is of the specified type
466 bool intel_pipe_has_type(struct drm_crtc *crtc, int type)
468 struct drm_device *dev = crtc->dev;
469 struct drm_mode_config *mode_config = &dev->mode_config;
470 struct intel_encoder *encoder;
472 list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
473 if (encoder->base.crtc == crtc && encoder->type == type)
479 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
481 * Returns whether the given set of divisors are valid for a given refclk with
482 * the given connectors.
485 static bool intel_PLL_is_valid(struct drm_device *dev,
486 const intel_limit_t *limit,
487 const intel_clock_t *clock)
489 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
490 INTELPllInvalid ("p1 out of range\n");
491 if (clock->p < limit->p.min || limit->p.max < clock->p)
492 INTELPllInvalid ("p out of range\n");
493 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
494 INTELPllInvalid ("m2 out of range\n");
495 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
496 INTELPllInvalid ("m1 out of range\n");
497 if (clock->m1 <= clock->m2 && !IS_PINEVIEW(dev))
498 INTELPllInvalid ("m1 <= m2\n");
499 if (clock->m < limit->m.min || limit->m.max < clock->m)
500 INTELPllInvalid ("m out of range\n");
501 if (clock->n < limit->n.min || limit->n.max < clock->n)
502 INTELPllInvalid ("n out of range\n");
503 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
504 INTELPllInvalid ("vco out of range\n");
505 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
506 * connector, etc., rather than just a single range.
508 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
509 INTELPllInvalid ("dot out of range\n");
515 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
516 int target, int refclk, intel_clock_t *best_clock)
519 struct drm_device *dev = crtc->dev;
520 struct drm_i915_private *dev_priv = dev->dev_private;
524 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
525 (I915_READ(LVDS)) != 0) {
527 * For LVDS, if the panel is on, just rely on its current
528 * settings for dual-channel. We haven't figured out how to
529 * reliably set up different single/dual channel state, if we
532 if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
534 clock.p2 = limit->p2.p2_fast;
536 clock.p2 = limit->p2.p2_slow;
538 if (target < limit->p2.dot_limit)
539 clock.p2 = limit->p2.p2_slow;
541 clock.p2 = limit->p2.p2_fast;
544 memset (best_clock, 0, sizeof (*best_clock));
546 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
548 for (clock.m2 = limit->m2.min;
549 clock.m2 <= limit->m2.max; clock.m2++) {
550 /* m1 is always 0 in Pineview */
551 if (clock.m2 >= clock.m1 && !IS_PINEVIEW(dev))
553 for (clock.n = limit->n.min;
554 clock.n <= limit->n.max; clock.n++) {
555 for (clock.p1 = limit->p1.min;
556 clock.p1 <= limit->p1.max; clock.p1++) {
559 intel_clock(dev, refclk, &clock);
560 if (!intel_PLL_is_valid(dev, limit,
564 this_err = abs(clock.dot - target);
565 if (this_err < err) {
574 return (err != target);
578 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
579 int target, int refclk, intel_clock_t *best_clock)
581 struct drm_device *dev = crtc->dev;
582 struct drm_i915_private *dev_priv = dev->dev_private;
586 /* approximately equals target * 0.00585 */
587 int err_most = (target >> 8) + (target >> 9);
590 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
593 if (HAS_PCH_SPLIT(dev))
597 if ((I915_READ(lvds_reg) & LVDS_CLKB_POWER_MASK) ==
599 clock.p2 = limit->p2.p2_fast;
601 clock.p2 = limit->p2.p2_slow;
603 if (target < limit->p2.dot_limit)
604 clock.p2 = limit->p2.p2_slow;
606 clock.p2 = limit->p2.p2_fast;
609 memset(best_clock, 0, sizeof(*best_clock));
610 max_n = limit->n.max;
611 /* based on hardware requirement, prefer smaller n to precision */
612 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
613 /* based on hardware requirement, prefere larger m1,m2 */
614 for (clock.m1 = limit->m1.max;
615 clock.m1 >= limit->m1.min; clock.m1--) {
616 for (clock.m2 = limit->m2.max;
617 clock.m2 >= limit->m2.min; clock.m2--) {
618 for (clock.p1 = limit->p1.max;
619 clock.p1 >= limit->p1.min; clock.p1--) {
622 intel_clock(dev, refclk, &clock);
623 if (!intel_PLL_is_valid(dev, limit,
627 this_err = abs(clock.dot - target);
628 if (this_err < err_most) {
642 intel_find_pll_ironlake_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
643 int target, int refclk, intel_clock_t *best_clock)
645 struct drm_device *dev = crtc->dev;
648 if (target < 200000) {
661 intel_clock(dev, refclk, &clock);
662 memcpy(best_clock, &clock, sizeof(intel_clock_t));
666 /* DisplayPort has only two frequencies, 162MHz and 270MHz */
668 intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
669 int target, int refclk, intel_clock_t *best_clock)
672 if (target < 200000) {
685 clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2);
686 clock.p = (clock.p1 * clock.p2);
687 clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p;
689 memcpy(best_clock, &clock, sizeof(intel_clock_t));
694 * intel_wait_for_vblank - wait for vblank on a given pipe
696 * @pipe: pipe to wait for
698 * Wait for vblank to occur on a given pipe. Needed for various bits of
701 void intel_wait_for_vblank(struct drm_device *dev, int pipe)
703 struct drm_i915_private *dev_priv = dev->dev_private;
704 int pipestat_reg = PIPESTAT(pipe);
706 /* Clear existing vblank status. Note this will clear any other
707 * sticky status fields as well.
709 * This races with i915_driver_irq_handler() with the result
710 * that either function could miss a vblank event. Here it is not
711 * fatal, as we will either wait upon the next vblank interrupt or
712 * timeout. Generally speaking intel_wait_for_vblank() is only
713 * called during modeset at which time the GPU should be idle and
714 * should *not* be performing page flips and thus not waiting on
716 * Currently, the result of us stealing a vblank from the irq
717 * handler is that a single frame will be skipped during swapbuffers.
719 I915_WRITE(pipestat_reg,
720 I915_READ(pipestat_reg) | PIPE_VBLANK_INTERRUPT_STATUS);
722 /* Wait for vblank interrupt bit to set */
723 if (wait_for(I915_READ(pipestat_reg) &
724 PIPE_VBLANK_INTERRUPT_STATUS,
726 DRM_DEBUG_KMS("vblank wait timed out\n");
730 * intel_wait_for_pipe_off - wait for pipe to turn off
732 * @pipe: pipe to wait for
734 * After disabling a pipe, we can't wait for vblank in the usual way,
735 * spinning on the vblank interrupt status bit, since we won't actually
736 * see an interrupt when the pipe is disabled.
739 * wait for the pipe register state bit to turn off
742 * wait for the display line value to settle (it usually
743 * ends up stopping at the start of the next frame).
746 void intel_wait_for_pipe_off(struct drm_device *dev, int pipe)
748 struct drm_i915_private *dev_priv = dev->dev_private;
750 if (INTEL_INFO(dev)->gen >= 4) {
751 int reg = PIPECONF(pipe);
753 /* Wait for the Pipe State to go off */
754 if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
756 DRM_DEBUG_KMS("pipe_off wait timed out\n");
759 int reg = PIPEDSL(pipe);
760 unsigned long timeout = jiffies + msecs_to_jiffies(100);
762 /* Wait for the display line to settle */
764 last_line = I915_READ(reg) & DSL_LINEMASK;
766 } while (((I915_READ(reg) & DSL_LINEMASK) != last_line) &&
767 time_after(timeout, jiffies));
768 if (time_after(jiffies, timeout))
769 DRM_DEBUG_KMS("pipe_off wait timed out\n");
773 static const char *state_string(bool enabled)
775 return enabled ? "on" : "off";
778 /* Only for pre-ILK configs */
779 static void assert_pll(struct drm_i915_private *dev_priv,
780 enum pipe pipe, bool state)
787 val = I915_READ(reg);
788 cur_state = !!(val & DPLL_VCO_ENABLE);
789 WARN(cur_state != state,
790 "PLL state assertion failure (expected %s, current %s)\n",
791 state_string(state), state_string(cur_state));
793 #define assert_pll_enabled(d, p) assert_pll(d, p, true)
794 #define assert_pll_disabled(d, p) assert_pll(d, p, false)
797 static void assert_pch_pll(struct drm_i915_private *dev_priv,
798 enum pipe pipe, bool state)
804 reg = PCH_DPLL(pipe);
805 val = I915_READ(reg);
806 cur_state = !!(val & DPLL_VCO_ENABLE);
807 WARN(cur_state != state,
808 "PCH PLL state assertion failure (expected %s, current %s)\n",
809 state_string(state), state_string(cur_state));
811 #define assert_pch_pll_enabled(d, p) assert_pch_pll(d, p, true)
812 #define assert_pch_pll_disabled(d, p) assert_pch_pll(d, p, false)
814 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
815 enum pipe pipe, bool state)
821 reg = FDI_TX_CTL(pipe);
822 val = I915_READ(reg);
823 cur_state = !!(val & FDI_TX_ENABLE);
824 WARN(cur_state != state,
825 "FDI TX state assertion failure (expected %s, current %s)\n",
826 state_string(state), state_string(cur_state));
828 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
829 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
831 static void assert_fdi_rx(struct drm_i915_private *dev_priv,
832 enum pipe pipe, bool state)
838 reg = FDI_RX_CTL(pipe);
839 val = I915_READ(reg);
840 cur_state = !!(val & FDI_RX_ENABLE);
841 WARN(cur_state != state,
842 "FDI RX state assertion failure (expected %s, current %s)\n",
843 state_string(state), state_string(cur_state));
845 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
846 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
848 static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
854 /* ILK FDI PLL is always enabled */
855 if (dev_priv->info->gen == 5)
858 reg = FDI_TX_CTL(pipe);
859 val = I915_READ(reg);
860 WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
863 static void assert_fdi_rx_pll_enabled(struct drm_i915_private *dev_priv,
869 reg = FDI_RX_CTL(pipe);
870 val = I915_READ(reg);
871 WARN(!(val & FDI_RX_PLL_ENABLE), "FDI RX PLL assertion failure, should be active but is disabled\n");
874 static void assert_panel_unlocked(struct drm_i915_private *dev_priv,
877 int pp_reg, lvds_reg;
879 enum pipe panel_pipe = PIPE_A;
880 bool locked = locked;
882 if (HAS_PCH_SPLIT(dev_priv->dev)) {
883 pp_reg = PCH_PP_CONTROL;
890 val = I915_READ(pp_reg);
891 if (!(val & PANEL_POWER_ON) ||
892 ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS))
895 if (I915_READ(lvds_reg) & LVDS_PIPEB_SELECT)
898 WARN(panel_pipe == pipe && locked,
899 "panel assertion failure, pipe %c regs locked\n",
903 static void assert_pipe(struct drm_i915_private *dev_priv,
904 enum pipe pipe, bool state)
910 reg = PIPECONF(pipe);
911 val = I915_READ(reg);
912 cur_state = !!(val & PIPECONF_ENABLE);
913 WARN(cur_state != state,
914 "pipe %c assertion failure (expected %s, current %s)\n",
915 pipe_name(pipe), state_string(state), state_string(cur_state));
917 #define assert_pipe_enabled(d, p) assert_pipe(d, p, true)
918 #define assert_pipe_disabled(d, p) assert_pipe(d, p, false)
920 static void assert_plane_enabled(struct drm_i915_private *dev_priv,
926 reg = DSPCNTR(plane);
927 val = I915_READ(reg);
928 WARN(!(val & DISPLAY_PLANE_ENABLE),
929 "plane %c assertion failure, should be active but is disabled\n",
933 static void assert_planes_disabled(struct drm_i915_private *dev_priv,
940 /* Planes are fixed to pipes on ILK+ */
941 if (HAS_PCH_SPLIT(dev_priv->dev))
944 /* Need to check both planes against the pipe */
945 for (i = 0; i < 2; i++) {
947 val = I915_READ(reg);
948 cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
949 DISPPLANE_SEL_PIPE_SHIFT;
950 WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
951 "plane %c assertion failure, should be off on pipe %c but is still active\n",
952 plane_name(i), pipe_name(pipe));
956 static void assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
961 val = I915_READ(PCH_DREF_CONTROL);
962 enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
963 DREF_SUPERSPREAD_SOURCE_MASK));
964 WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
967 static void assert_transcoder_disabled(struct drm_i915_private *dev_priv,
974 reg = TRANSCONF(pipe);
975 val = I915_READ(reg);
976 enabled = !!(val & TRANS_ENABLE);
978 "transcoder assertion failed, should be off on pipe %c but is still active\n",
982 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
983 enum pipe pipe, int reg)
985 u32 val = I915_READ(reg);
986 WARN(DP_PIPE_ENABLED(val, pipe),
987 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
988 reg, pipe_name(pipe));
991 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
992 enum pipe pipe, int reg)
994 u32 val = I915_READ(reg);
995 WARN(HDMI_PIPE_ENABLED(val, pipe),
996 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
997 reg, pipe_name(pipe));
1000 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1006 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B);
1007 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C);
1008 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D);
1011 val = I915_READ(reg);
1012 WARN(ADPA_PIPE_ENABLED(val, pipe),
1013 "PCH VGA enabled on transcoder %c, should be disabled\n",
1017 val = I915_READ(reg);
1018 WARN(LVDS_PIPE_ENABLED(val, pipe),
1019 "PCH LVDS enabled on transcoder %c, should be disabled\n",
1022 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIB);
1023 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIC);
1024 assert_pch_hdmi_disabled(dev_priv, pipe, HDMID);
1028 * intel_enable_pll - enable a PLL
1029 * @dev_priv: i915 private structure
1030 * @pipe: pipe PLL to enable
1032 * Enable @pipe's PLL so we can start pumping pixels from a plane. Check to
1033 * make sure the PLL reg is writable first though, since the panel write
1034 * protect mechanism may be enabled.
1036 * Note! This is for pre-ILK only.
1038 static void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1043 /* No really, not for ILK+ */
1044 BUG_ON(dev_priv->info->gen >= 5);
1046 /* PLL is protected by panel, make sure we can write it */
1047 if (IS_MOBILE(dev_priv->dev) && !IS_I830(dev_priv->dev))
1048 assert_panel_unlocked(dev_priv, pipe);
1051 val = I915_READ(reg);
1052 val |= DPLL_VCO_ENABLE;
1054 /* We do this three times for luck */
1055 I915_WRITE(reg, val);
1057 udelay(150); /* wait for warmup */
1058 I915_WRITE(reg, val);
1060 udelay(150); /* wait for warmup */
1061 I915_WRITE(reg, val);
1063 udelay(150); /* wait for warmup */
1067 * intel_disable_pll - disable a PLL
1068 * @dev_priv: i915 private structure
1069 * @pipe: pipe PLL to disable
1071 * Disable the PLL for @pipe, making sure the pipe is off first.
1073 * Note! This is for pre-ILK only.
1075 static void intel_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1080 /* Don't disable pipe A or pipe A PLLs if needed */
1081 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1084 /* Make sure the pipe isn't still relying on us */
1085 assert_pipe_disabled(dev_priv, pipe);
1088 val = I915_READ(reg);
1089 val &= ~DPLL_VCO_ENABLE;
1090 I915_WRITE(reg, val);
1095 * intel_enable_pch_pll - enable PCH PLL
1096 * @dev_priv: i915 private structure
1097 * @pipe: pipe PLL to enable
1099 * The PCH PLL needs to be enabled before the PCH transcoder, since it
1100 * drives the transcoder clock.
1102 static void intel_enable_pch_pll(struct drm_i915_private *dev_priv,
1108 /* PCH only available on ILK+ */
1109 BUG_ON(dev_priv->info->gen < 5);
1111 /* PCH refclock must be enabled first */
1112 assert_pch_refclk_enabled(dev_priv);
1114 reg = PCH_DPLL(pipe);
1115 val = I915_READ(reg);
1116 val |= DPLL_VCO_ENABLE;
1117 I915_WRITE(reg, val);
1122 static void intel_disable_pch_pll(struct drm_i915_private *dev_priv,
1128 /* PCH only available on ILK+ */
1129 BUG_ON(dev_priv->info->gen < 5);
1131 /* Make sure transcoder isn't still depending on us */
1132 assert_transcoder_disabled(dev_priv, pipe);
1134 reg = PCH_DPLL(pipe);
1135 val = I915_READ(reg);
1136 val &= ~DPLL_VCO_ENABLE;
1137 I915_WRITE(reg, val);
1142 static void intel_enable_transcoder(struct drm_i915_private *dev_priv,
1148 /* PCH only available on ILK+ */
1149 BUG_ON(dev_priv->info->gen < 5);
1151 /* Make sure PCH DPLL is enabled */
1152 assert_pch_pll_enabled(dev_priv, pipe);
1154 /* FDI must be feeding us bits for PCH ports */
1155 assert_fdi_tx_enabled(dev_priv, pipe);
1156 assert_fdi_rx_enabled(dev_priv, pipe);
1158 reg = TRANSCONF(pipe);
1159 val = I915_READ(reg);
1161 * make the BPC in transcoder be consistent with
1162 * that in pipeconf reg.
1164 val &= ~PIPE_BPC_MASK;
1165 val |= I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK;
1166 I915_WRITE(reg, val | TRANS_ENABLE);
1167 if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
1168 DRM_ERROR("failed to enable transcoder %d\n", pipe);
1171 static void intel_disable_transcoder(struct drm_i915_private *dev_priv,
1177 /* FDI relies on the transcoder */
1178 assert_fdi_tx_disabled(dev_priv, pipe);
1179 assert_fdi_rx_disabled(dev_priv, pipe);
1181 /* Ports must be off as well */
1182 assert_pch_ports_disabled(dev_priv, pipe);
1184 reg = TRANSCONF(pipe);
1185 val = I915_READ(reg);
1186 val &= ~TRANS_ENABLE;
1187 I915_WRITE(reg, val);
1188 /* wait for PCH transcoder off, transcoder state */
1189 if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
1190 DRM_ERROR("failed to disable transcoder\n");
1194 * intel_enable_pipe - enable a pipe, asserting requirements
1195 * @dev_priv: i915 private structure
1196 * @pipe: pipe to enable
1197 * @pch_port: on ILK+, is this pipe driving a PCH port or not
1199 * Enable @pipe, making sure that various hardware specific requirements
1200 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
1202 * @pipe should be %PIPE_A or %PIPE_B.
1204 * Will wait until the pipe is actually running (i.e. first vblank) before
1207 static void intel_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
1214 * A pipe without a PLL won't actually be able to drive bits from
1215 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
1218 if (!HAS_PCH_SPLIT(dev_priv->dev))
1219 assert_pll_enabled(dev_priv, pipe);
1222 /* if driving the PCH, we need FDI enabled */
1223 assert_fdi_rx_pll_enabled(dev_priv, pipe);
1224 assert_fdi_tx_pll_enabled(dev_priv, pipe);
1226 /* FIXME: assert CPU port conditions for SNB+ */
1229 reg = PIPECONF(pipe);
1230 val = I915_READ(reg);
1231 if (val & PIPECONF_ENABLE)
1234 I915_WRITE(reg, val | PIPECONF_ENABLE);
1235 intel_wait_for_vblank(dev_priv->dev, pipe);
1239 * intel_disable_pipe - disable a pipe, asserting requirements
1240 * @dev_priv: i915 private structure
1241 * @pipe: pipe to disable
1243 * Disable @pipe, making sure that various hardware specific requirements
1244 * are met, if applicable, e.g. plane disabled, panel fitter off, etc.
1246 * @pipe should be %PIPE_A or %PIPE_B.
1248 * Will wait until the pipe has shut down before returning.
1250 static void intel_disable_pipe(struct drm_i915_private *dev_priv,
1257 * Make sure planes won't keep trying to pump pixels to us,
1258 * or we might hang the display.
1260 assert_planes_disabled(dev_priv, pipe);
1262 /* Don't disable pipe A or pipe A PLLs if needed */
1263 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1266 reg = PIPECONF(pipe);
1267 val = I915_READ(reg);
1268 if ((val & PIPECONF_ENABLE) == 0)
1271 I915_WRITE(reg, val & ~PIPECONF_ENABLE);
1272 intel_wait_for_pipe_off(dev_priv->dev, pipe);
1276 * intel_enable_plane - enable a display plane on a given pipe
1277 * @dev_priv: i915 private structure
1278 * @plane: plane to enable
1279 * @pipe: pipe being fed
1281 * Enable @plane on @pipe, making sure that @pipe is running first.
1283 static void intel_enable_plane(struct drm_i915_private *dev_priv,
1284 enum plane plane, enum pipe pipe)
1289 /* If the pipe isn't enabled, we can't pump pixels and may hang */
1290 assert_pipe_enabled(dev_priv, pipe);
1292 reg = DSPCNTR(plane);
1293 val = I915_READ(reg);
1294 if (val & DISPLAY_PLANE_ENABLE)
1297 I915_WRITE(reg, val | DISPLAY_PLANE_ENABLE);
1298 intel_wait_for_vblank(dev_priv->dev, pipe);
1302 * Plane regs are double buffered, going from enabled->disabled needs a
1303 * trigger in order to latch. The display address reg provides this.
1305 static void intel_flush_display_plane(struct drm_i915_private *dev_priv,
1308 u32 reg = DSPADDR(plane);
1309 I915_WRITE(reg, I915_READ(reg));
1313 * intel_disable_plane - disable a display plane
1314 * @dev_priv: i915 private structure
1315 * @plane: plane to disable
1316 * @pipe: pipe consuming the data
1318 * Disable @plane; should be an independent operation.
1320 static void intel_disable_plane(struct drm_i915_private *dev_priv,
1321 enum plane plane, enum pipe pipe)
1326 reg = DSPCNTR(plane);
1327 val = I915_READ(reg);
1328 if ((val & DISPLAY_PLANE_ENABLE) == 0)
1331 I915_WRITE(reg, val & ~DISPLAY_PLANE_ENABLE);
1332 intel_flush_display_plane(dev_priv, plane);
1333 intel_wait_for_vblank(dev_priv->dev, pipe);
1336 static void disable_pch_dp(struct drm_i915_private *dev_priv,
1337 enum pipe pipe, int reg)
1339 u32 val = I915_READ(reg);
1340 if (DP_PIPE_ENABLED(val, pipe))
1341 I915_WRITE(reg, val & ~DP_PORT_EN);
1344 static void disable_pch_hdmi(struct drm_i915_private *dev_priv,
1345 enum pipe pipe, int reg)
1347 u32 val = I915_READ(reg);
1348 if (HDMI_PIPE_ENABLED(val, pipe))
1349 I915_WRITE(reg, val & ~PORT_ENABLE);
1352 /* Disable any ports connected to this transcoder */
1353 static void intel_disable_pch_ports(struct drm_i915_private *dev_priv,
1358 val = I915_READ(PCH_PP_CONTROL);
1359 I915_WRITE(PCH_PP_CONTROL, val | PANEL_UNLOCK_REGS);
1361 disable_pch_dp(dev_priv, pipe, PCH_DP_B);
1362 disable_pch_dp(dev_priv, pipe, PCH_DP_C);
1363 disable_pch_dp(dev_priv, pipe, PCH_DP_D);
1366 val = I915_READ(reg);
1367 if (ADPA_PIPE_ENABLED(val, pipe))
1368 I915_WRITE(reg, val & ~ADPA_DAC_ENABLE);
1371 val = I915_READ(reg);
1372 if (LVDS_PIPE_ENABLED(val, pipe)) {
1373 I915_WRITE(reg, val & ~LVDS_PORT_EN);
1378 disable_pch_hdmi(dev_priv, pipe, HDMIB);
1379 disable_pch_hdmi(dev_priv, pipe, HDMIC);
1380 disable_pch_hdmi(dev_priv, pipe, HDMID);
1383 static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1385 struct drm_device *dev = crtc->dev;
1386 struct drm_i915_private *dev_priv = dev->dev_private;
1387 struct drm_framebuffer *fb = crtc->fb;
1388 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1389 struct drm_i915_gem_object *obj = intel_fb->obj;
1390 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1392 u32 fbc_ctl, fbc_ctl2;
1394 if (fb->pitch == dev_priv->cfb_pitch &&
1395 obj->fence_reg == dev_priv->cfb_fence &&
1396 intel_crtc->plane == dev_priv->cfb_plane &&
1397 I915_READ(FBC_CONTROL) & FBC_CTL_EN)
1400 i8xx_disable_fbc(dev);
1402 dev_priv->cfb_pitch = dev_priv->cfb_size / FBC_LL_SIZE;
1404 if (fb->pitch < dev_priv->cfb_pitch)
1405 dev_priv->cfb_pitch = fb->pitch;
1407 /* FBC_CTL wants 64B units */
1408 dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
1409 dev_priv->cfb_fence = obj->fence_reg;
1410 dev_priv->cfb_plane = intel_crtc->plane;
1411 plane = dev_priv->cfb_plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB;
1413 /* Clear old tags */
1414 for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++)
1415 I915_WRITE(FBC_TAG + (i * 4), 0);
1418 fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | plane;
1419 if (obj->tiling_mode != I915_TILING_NONE)
1420 fbc_ctl2 |= FBC_CTL_CPU_FENCE;
1421 I915_WRITE(FBC_CONTROL2, fbc_ctl2);
1422 I915_WRITE(FBC_FENCE_OFF, crtc->y);
1425 fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC;
1427 fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */
1428 fbc_ctl |= (dev_priv->cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;
1429 fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT;
1430 if (obj->tiling_mode != I915_TILING_NONE)
1431 fbc_ctl |= dev_priv->cfb_fence;
1432 I915_WRITE(FBC_CONTROL, fbc_ctl);
1434 DRM_DEBUG_KMS("enabled FBC, pitch %ld, yoff %d, plane %d, ",
1435 dev_priv->cfb_pitch, crtc->y, dev_priv->cfb_plane);
1438 void i8xx_disable_fbc(struct drm_device *dev)
1440 struct drm_i915_private *dev_priv = dev->dev_private;
1443 /* Disable compression */
1444 fbc_ctl = I915_READ(FBC_CONTROL);
1445 if ((fbc_ctl & FBC_CTL_EN) == 0)
1448 fbc_ctl &= ~FBC_CTL_EN;
1449 I915_WRITE(FBC_CONTROL, fbc_ctl);
1451 /* Wait for compressing bit to clear */
1452 if (wait_for((I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING) == 0, 10)) {
1453 DRM_DEBUG_KMS("FBC idle timed out\n");
1457 DRM_DEBUG_KMS("disabled FBC\n");
1460 static bool i8xx_fbc_enabled(struct drm_device *dev)
1462 struct drm_i915_private *dev_priv = dev->dev_private;
1464 return I915_READ(FBC_CONTROL) & FBC_CTL_EN;
1467 static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1469 struct drm_device *dev = crtc->dev;
1470 struct drm_i915_private *dev_priv = dev->dev_private;
1471 struct drm_framebuffer *fb = crtc->fb;
1472 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1473 struct drm_i915_gem_object *obj = intel_fb->obj;
1474 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1475 int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
1476 unsigned long stall_watermark = 200;
1479 dpfc_ctl = I915_READ(DPFC_CONTROL);
1480 if (dpfc_ctl & DPFC_CTL_EN) {
1481 if (dev_priv->cfb_pitch == dev_priv->cfb_pitch / 64 - 1 &&
1482 dev_priv->cfb_fence == obj->fence_reg &&
1483 dev_priv->cfb_plane == intel_crtc->plane &&
1484 dev_priv->cfb_y == crtc->y)
1487 I915_WRITE(DPFC_CONTROL, dpfc_ctl & ~DPFC_CTL_EN);
1488 intel_wait_for_vblank(dev, intel_crtc->pipe);
1491 dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
1492 dev_priv->cfb_fence = obj->fence_reg;
1493 dev_priv->cfb_plane = intel_crtc->plane;
1494 dev_priv->cfb_y = crtc->y;
1496 dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X;
1497 if (obj->tiling_mode != I915_TILING_NONE) {
1498 dpfc_ctl |= DPFC_CTL_FENCE_EN | dev_priv->cfb_fence;
1499 I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY);
1501 I915_WRITE(DPFC_CHICKEN, ~DPFC_HT_MODIFY);
1504 I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
1505 (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
1506 (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
1507 I915_WRITE(DPFC_FENCE_YOFF, crtc->y);
1510 I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN);
1512 DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
1515 void g4x_disable_fbc(struct drm_device *dev)
1517 struct drm_i915_private *dev_priv = dev->dev_private;
1520 /* Disable compression */
1521 dpfc_ctl = I915_READ(DPFC_CONTROL);
1522 if (dpfc_ctl & DPFC_CTL_EN) {
1523 dpfc_ctl &= ~DPFC_CTL_EN;
1524 I915_WRITE(DPFC_CONTROL, dpfc_ctl);
1526 DRM_DEBUG_KMS("disabled FBC\n");
1530 static bool g4x_fbc_enabled(struct drm_device *dev)
1532 struct drm_i915_private *dev_priv = dev->dev_private;
1534 return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
1537 static void sandybridge_blit_fbc_update(struct drm_device *dev)
1539 struct drm_i915_private *dev_priv = dev->dev_private;
1542 /* Make sure blitter notifies FBC of writes */
1543 gen6_gt_force_wake_get(dev_priv);
1544 blt_ecoskpd = I915_READ(GEN6_BLITTER_ECOSKPD);
1545 blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY <<
1546 GEN6_BLITTER_LOCK_SHIFT;
1547 I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
1548 blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY;
1549 I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
1550 blt_ecoskpd &= ~(GEN6_BLITTER_FBC_NOTIFY <<
1551 GEN6_BLITTER_LOCK_SHIFT);
1552 I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
1553 POSTING_READ(GEN6_BLITTER_ECOSKPD);
1554 gen6_gt_force_wake_put(dev_priv);
1557 static void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1559 struct drm_device *dev = crtc->dev;
1560 struct drm_i915_private *dev_priv = dev->dev_private;
1561 struct drm_framebuffer *fb = crtc->fb;
1562 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1563 struct drm_i915_gem_object *obj = intel_fb->obj;
1564 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1565 int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
1566 unsigned long stall_watermark = 200;
1569 dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
1570 if (dpfc_ctl & DPFC_CTL_EN) {
1571 if (dev_priv->cfb_pitch == dev_priv->cfb_pitch / 64 - 1 &&
1572 dev_priv->cfb_fence == obj->fence_reg &&
1573 dev_priv->cfb_plane == intel_crtc->plane &&
1574 dev_priv->cfb_offset == obj->gtt_offset &&
1575 dev_priv->cfb_y == crtc->y)
1578 I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl & ~DPFC_CTL_EN);
1579 intel_wait_for_vblank(dev, intel_crtc->pipe);
1582 dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
1583 dev_priv->cfb_fence = obj->fence_reg;
1584 dev_priv->cfb_plane = intel_crtc->plane;
1585 dev_priv->cfb_offset = obj->gtt_offset;
1586 dev_priv->cfb_y = crtc->y;
1588 dpfc_ctl &= DPFC_RESERVED;
1589 dpfc_ctl |= (plane | DPFC_CTL_LIMIT_1X);
1590 if (obj->tiling_mode != I915_TILING_NONE) {
1591 dpfc_ctl |= (DPFC_CTL_FENCE_EN | dev_priv->cfb_fence);
1592 I915_WRITE(ILK_DPFC_CHICKEN, DPFC_HT_MODIFY);
1594 I915_WRITE(ILK_DPFC_CHICKEN, ~DPFC_HT_MODIFY);
1597 I915_WRITE(ILK_DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
1598 (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
1599 (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
1600 I915_WRITE(ILK_DPFC_FENCE_YOFF, crtc->y);
1601 I915_WRITE(ILK_FBC_RT_BASE, obj->gtt_offset | ILK_FBC_RT_VALID);
1603 I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl | DPFC_CTL_EN);
1606 I915_WRITE(SNB_DPFC_CTL_SA,
1607 SNB_CPU_FENCE_ENABLE | dev_priv->cfb_fence);
1608 I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y);
1609 sandybridge_blit_fbc_update(dev);
1612 DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
1615 void ironlake_disable_fbc(struct drm_device *dev)
1617 struct drm_i915_private *dev_priv = dev->dev_private;
1620 /* Disable compression */
1621 dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
1622 if (dpfc_ctl & DPFC_CTL_EN) {
1623 dpfc_ctl &= ~DPFC_CTL_EN;
1624 I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl);
1626 DRM_DEBUG_KMS("disabled FBC\n");
1630 static bool ironlake_fbc_enabled(struct drm_device *dev)
1632 struct drm_i915_private *dev_priv = dev->dev_private;
1634 return I915_READ(ILK_DPFC_CONTROL) & DPFC_CTL_EN;
1637 bool intel_fbc_enabled(struct drm_device *dev)
1639 struct drm_i915_private *dev_priv = dev->dev_private;
1641 if (!dev_priv->display.fbc_enabled)
1644 return dev_priv->display.fbc_enabled(dev);
1647 void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1649 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
1651 if (!dev_priv->display.enable_fbc)
1654 dev_priv->display.enable_fbc(crtc, interval);
1657 void intel_disable_fbc(struct drm_device *dev)
1659 struct drm_i915_private *dev_priv = dev->dev_private;
1661 if (!dev_priv->display.disable_fbc)
1664 dev_priv->display.disable_fbc(dev);
1668 * intel_update_fbc - enable/disable FBC as needed
1669 * @dev: the drm_device
1671 * Set up the framebuffer compression hardware at mode set time. We
1672 * enable it if possible:
1673 * - plane A only (on pre-965)
1674 * - no pixel mulitply/line duplication
1675 * - no alpha buffer discard
1677 * - framebuffer <= 2048 in width, 1536 in height
1679 * We can't assume that any compression will take place (worst case),
1680 * so the compressed buffer has to be the same size as the uncompressed
1681 * one. It also must reside (along with the line length buffer) in
1684 * We need to enable/disable FBC on a global basis.
1686 static void intel_update_fbc(struct drm_device *dev)
1688 struct drm_i915_private *dev_priv = dev->dev_private;
1689 struct drm_crtc *crtc = NULL, *tmp_crtc;
1690 struct intel_crtc *intel_crtc;
1691 struct drm_framebuffer *fb;
1692 struct intel_framebuffer *intel_fb;
1693 struct drm_i915_gem_object *obj;
1695 DRM_DEBUG_KMS("\n");
1697 if (!i915_powersave)
1700 if (!I915_HAS_FBC(dev))
1704 * If FBC is already on, we just have to verify that we can
1705 * keep it that way...
1706 * Need to disable if:
1707 * - more than one pipe is active
1708 * - changing FBC params (stride, fence, mode)
1709 * - new fb is too large to fit in compressed buffer
1710 * - going to an unsupported config (interlace, pixel multiply, etc.)
1712 list_for_each_entry(tmp_crtc, &dev->mode_config.crtc_list, head) {
1713 if (tmp_crtc->enabled && tmp_crtc->fb) {
1715 DRM_DEBUG_KMS("more than one pipe active, disabling compression\n");
1716 dev_priv->no_fbc_reason = FBC_MULTIPLE_PIPES;
1723 if (!crtc || crtc->fb == NULL) {
1724 DRM_DEBUG_KMS("no output, disabling\n");
1725 dev_priv->no_fbc_reason = FBC_NO_OUTPUT;
1729 intel_crtc = to_intel_crtc(crtc);
1731 intel_fb = to_intel_framebuffer(fb);
1732 obj = intel_fb->obj;
1734 if (!i915_enable_fbc) {
1735 DRM_DEBUG_KMS("fbc disabled per module param (default off)\n");
1736 dev_priv->no_fbc_reason = FBC_MODULE_PARAM;
1739 if (intel_fb->obj->base.size > dev_priv->cfb_size) {
1740 DRM_DEBUG_KMS("framebuffer too large, disabling "
1742 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
1745 if ((crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) ||
1746 (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)) {
1747 DRM_DEBUG_KMS("mode incompatible with compression, "
1749 dev_priv->no_fbc_reason = FBC_UNSUPPORTED_MODE;
1752 if ((crtc->mode.hdisplay > 2048) ||
1753 (crtc->mode.vdisplay > 1536)) {
1754 DRM_DEBUG_KMS("mode too large for compression, disabling\n");
1755 dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE;
1758 if ((IS_I915GM(dev) || IS_I945GM(dev)) && intel_crtc->plane != 0) {
1759 DRM_DEBUG_KMS("plane not 0, disabling compression\n");
1760 dev_priv->no_fbc_reason = FBC_BAD_PLANE;
1763 if (obj->tiling_mode != I915_TILING_X) {
1764 DRM_DEBUG_KMS("framebuffer not tiled, disabling compression\n");
1765 dev_priv->no_fbc_reason = FBC_NOT_TILED;
1769 /* If the kernel debugger is active, always disable compression */
1770 if (in_dbg_master())
1773 intel_enable_fbc(crtc, 500);
1777 /* Multiple disables should be harmless */
1778 if (intel_fbc_enabled(dev)) {
1779 DRM_DEBUG_KMS("unsupported config, disabling FBC\n");
1780 intel_disable_fbc(dev);
1785 intel_pin_and_fence_fb_obj(struct drm_device *dev,
1786 struct drm_i915_gem_object *obj,
1787 struct intel_ring_buffer *pipelined)
1789 struct drm_i915_private *dev_priv = dev->dev_private;
1793 switch (obj->tiling_mode) {
1794 case I915_TILING_NONE:
1795 if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
1796 alignment = 128 * 1024;
1797 else if (INTEL_INFO(dev)->gen >= 4)
1798 alignment = 4 * 1024;
1800 alignment = 64 * 1024;
1803 /* pin() will align the object as required by fence */
1807 /* FIXME: Is this true? */
1808 DRM_ERROR("Y tiled not allowed for scan out buffers\n");
1814 dev_priv->mm.interruptible = false;
1815 ret = i915_gem_object_pin(obj, alignment, true);
1817 goto err_interruptible;
1819 ret = i915_gem_object_set_to_display_plane(obj, pipelined);
1823 /* Install a fence for tiled scan-out. Pre-i965 always needs a
1824 * fence, whereas 965+ only requires a fence if using
1825 * framebuffer compression. For simplicity, we always install
1826 * a fence as the cost is not that onerous.
1828 if (obj->tiling_mode != I915_TILING_NONE) {
1829 ret = i915_gem_object_get_fence(obj, pipelined);
1834 dev_priv->mm.interruptible = true;
1838 i915_gem_object_unpin(obj);
1840 dev_priv->mm.interruptible = true;
1844 /* Assume fb object is pinned & idle & fenced and just update base pointers */
1846 intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
1847 int x, int y, enum mode_set_atomic state)
1849 struct drm_device *dev = crtc->dev;
1850 struct drm_i915_private *dev_priv = dev->dev_private;
1851 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1852 struct intel_framebuffer *intel_fb;
1853 struct drm_i915_gem_object *obj;
1854 int plane = intel_crtc->plane;
1855 unsigned long Start, Offset;
1864 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
1868 intel_fb = to_intel_framebuffer(fb);
1869 obj = intel_fb->obj;
1871 reg = DSPCNTR(plane);
1872 dspcntr = I915_READ(reg);
1873 /* Mask out pixel format bits in case we change it */
1874 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
1875 switch (fb->bits_per_pixel) {
1877 dspcntr |= DISPPLANE_8BPP;
1880 if (fb->depth == 15)
1881 dspcntr |= DISPPLANE_15_16BPP;
1883 dspcntr |= DISPPLANE_16BPP;
1887 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
1890 DRM_ERROR("Unknown color depth\n");
1893 if (INTEL_INFO(dev)->gen >= 4) {
1894 if (obj->tiling_mode != I915_TILING_NONE)
1895 dspcntr |= DISPPLANE_TILED;
1897 dspcntr &= ~DISPPLANE_TILED;
1900 if (HAS_PCH_SPLIT(dev))
1902 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
1904 I915_WRITE(reg, dspcntr);
1906 Start = obj->gtt_offset;
1907 Offset = y * fb->pitch + x * (fb->bits_per_pixel / 8);
1909 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
1910 Start, Offset, x, y, fb->pitch);
1911 I915_WRITE(DSPSTRIDE(plane), fb->pitch);
1912 if (INTEL_INFO(dev)->gen >= 4) {
1913 I915_WRITE(DSPSURF(plane), Start);
1914 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
1915 I915_WRITE(DSPADDR(plane), Offset);
1917 I915_WRITE(DSPADDR(plane), Start + Offset);
1920 intel_update_fbc(dev);
1921 intel_increase_pllclock(crtc);
1927 intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
1928 struct drm_framebuffer *old_fb)
1930 struct drm_device *dev = crtc->dev;
1931 struct drm_i915_master_private *master_priv;
1932 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1937 DRM_DEBUG_KMS("No FB bound\n");
1941 switch (intel_crtc->plane) {
1949 mutex_lock(&dev->struct_mutex);
1950 ret = intel_pin_and_fence_fb_obj(dev,
1951 to_intel_framebuffer(crtc->fb)->obj,
1954 mutex_unlock(&dev->struct_mutex);
1959 struct drm_i915_private *dev_priv = dev->dev_private;
1960 struct drm_i915_gem_object *obj = to_intel_framebuffer(old_fb)->obj;
1962 wait_event(dev_priv->pending_flip_queue,
1963 atomic_read(&dev_priv->mm.wedged) ||
1964 atomic_read(&obj->pending_flip) == 0);
1966 /* Big Hammer, we also need to ensure that any pending
1967 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
1968 * current scanout is retired before unpinning the old
1971 * This should only fail upon a hung GPU, in which case we
1972 * can safely continue.
1974 ret = i915_gem_object_flush_gpu(obj);
1978 ret = intel_pipe_set_base_atomic(crtc, crtc->fb, x, y,
1979 LEAVE_ATOMIC_MODE_SET);
1981 i915_gem_object_unpin(to_intel_framebuffer(crtc->fb)->obj);
1982 mutex_unlock(&dev->struct_mutex);
1987 intel_wait_for_vblank(dev, intel_crtc->pipe);
1988 i915_gem_object_unpin(to_intel_framebuffer(old_fb)->obj);
1991 mutex_unlock(&dev->struct_mutex);
1993 if (!dev->primary->master)
1996 master_priv = dev->primary->master->driver_priv;
1997 if (!master_priv->sarea_priv)
2000 if (intel_crtc->pipe) {
2001 master_priv->sarea_priv->pipeB_x = x;
2002 master_priv->sarea_priv->pipeB_y = y;
2004 master_priv->sarea_priv->pipeA_x = x;
2005 master_priv->sarea_priv->pipeA_y = y;
2011 static void ironlake_set_pll_edp(struct drm_crtc *crtc, int clock)
2013 struct drm_device *dev = crtc->dev;
2014 struct drm_i915_private *dev_priv = dev->dev_private;
2017 DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock);
2018 dpa_ctl = I915_READ(DP_A);
2019 dpa_ctl &= ~DP_PLL_FREQ_MASK;
2021 if (clock < 200000) {
2023 dpa_ctl |= DP_PLL_FREQ_160MHZ;
2024 /* workaround for 160Mhz:
2025 1) program 0x4600c bits 15:0 = 0x8124
2026 2) program 0x46010 bit 0 = 1
2027 3) program 0x46034 bit 24 = 1
2028 4) program 0x64000 bit 14 = 1
2030 temp = I915_READ(0x4600c);
2032 I915_WRITE(0x4600c, temp | 0x8124);
2034 temp = I915_READ(0x46010);
2035 I915_WRITE(0x46010, temp | 1);
2037 temp = I915_READ(0x46034);
2038 I915_WRITE(0x46034, temp | (1 << 24));
2040 dpa_ctl |= DP_PLL_FREQ_270MHZ;
2042 I915_WRITE(DP_A, dpa_ctl);
2048 static void intel_fdi_normal_train(struct drm_crtc *crtc)
2050 struct drm_device *dev = crtc->dev;
2051 struct drm_i915_private *dev_priv = dev->dev_private;
2052 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2053 int pipe = intel_crtc->pipe;
2056 /* enable normal train */
2057 reg = FDI_TX_CTL(pipe);
2058 temp = I915_READ(reg);
2059 if (IS_IVYBRIDGE(dev)) {
2060 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2061 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
2063 temp &= ~FDI_LINK_TRAIN_NONE;
2064 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
2066 I915_WRITE(reg, temp);
2068 reg = FDI_RX_CTL(pipe);
2069 temp = I915_READ(reg);
2070 if (HAS_PCH_CPT(dev)) {
2071 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2072 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
2074 temp &= ~FDI_LINK_TRAIN_NONE;
2075 temp |= FDI_LINK_TRAIN_NONE;
2077 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
2079 /* wait one idle pattern time */
2083 /* IVB wants error correction enabled */
2084 if (IS_IVYBRIDGE(dev))
2085 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
2086 FDI_FE_ERRC_ENABLE);
2089 /* The FDI link training functions for ILK/Ibexpeak. */
2090 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
2092 struct drm_device *dev = crtc->dev;
2093 struct drm_i915_private *dev_priv = dev->dev_private;
2094 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2095 int pipe = intel_crtc->pipe;
2096 int plane = intel_crtc->plane;
2097 u32 reg, temp, tries;
2099 /* FDI needs bits from pipe & plane first */
2100 assert_pipe_enabled(dev_priv, pipe);
2101 assert_plane_enabled(dev_priv, plane);
2103 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2105 reg = FDI_RX_IMR(pipe);
2106 temp = I915_READ(reg);
2107 temp &= ~FDI_RX_SYMBOL_LOCK;
2108 temp &= ~FDI_RX_BIT_LOCK;
2109 I915_WRITE(reg, temp);
2113 /* enable CPU FDI TX and PCH FDI RX */
2114 reg = FDI_TX_CTL(pipe);
2115 temp = I915_READ(reg);
2117 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2118 temp &= ~FDI_LINK_TRAIN_NONE;
2119 temp |= FDI_LINK_TRAIN_PATTERN_1;
2120 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2122 reg = FDI_RX_CTL(pipe);
2123 temp = I915_READ(reg);
2124 temp &= ~FDI_LINK_TRAIN_NONE;
2125 temp |= FDI_LINK_TRAIN_PATTERN_1;
2126 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2131 /* Ironlake workaround, enable clock pointer after FDI enable*/
2132 if (HAS_PCH_IBX(dev)) {
2133 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
2134 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
2135 FDI_RX_PHASE_SYNC_POINTER_EN);
2138 reg = FDI_RX_IIR(pipe);
2139 for (tries = 0; tries < 5; tries++) {
2140 temp = I915_READ(reg);
2141 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2143 if ((temp & FDI_RX_BIT_LOCK)) {
2144 DRM_DEBUG_KMS("FDI train 1 done.\n");
2145 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2150 DRM_ERROR("FDI train 1 fail!\n");
2153 reg = FDI_TX_CTL(pipe);
2154 temp = I915_READ(reg);
2155 temp &= ~FDI_LINK_TRAIN_NONE;
2156 temp |= FDI_LINK_TRAIN_PATTERN_2;
2157 I915_WRITE(reg, temp);
2159 reg = FDI_RX_CTL(pipe);
2160 temp = I915_READ(reg);
2161 temp &= ~FDI_LINK_TRAIN_NONE;
2162 temp |= FDI_LINK_TRAIN_PATTERN_2;
2163 I915_WRITE(reg, temp);
2168 reg = FDI_RX_IIR(pipe);
2169 for (tries = 0; tries < 5; tries++) {
2170 temp = I915_READ(reg);
2171 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2173 if (temp & FDI_RX_SYMBOL_LOCK) {
2174 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2175 DRM_DEBUG_KMS("FDI train 2 done.\n");
2180 DRM_ERROR("FDI train 2 fail!\n");
2182 DRM_DEBUG_KMS("FDI train done\n");
2186 static const int snb_b_fdi_train_param [] = {
2187 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
2188 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
2189 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
2190 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
2193 /* The FDI link training functions for SNB/Cougarpoint. */
2194 static void gen6_fdi_link_train(struct drm_crtc *crtc)
2196 struct drm_device *dev = crtc->dev;
2197 struct drm_i915_private *dev_priv = dev->dev_private;
2198 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2199 int pipe = intel_crtc->pipe;
2202 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2204 reg = FDI_RX_IMR(pipe);
2205 temp = I915_READ(reg);
2206 temp &= ~FDI_RX_SYMBOL_LOCK;
2207 temp &= ~FDI_RX_BIT_LOCK;
2208 I915_WRITE(reg, temp);
2213 /* enable CPU FDI TX and PCH FDI RX */
2214 reg = FDI_TX_CTL(pipe);
2215 temp = I915_READ(reg);
2217 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2218 temp &= ~FDI_LINK_TRAIN_NONE;
2219 temp |= FDI_LINK_TRAIN_PATTERN_1;
2220 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2222 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2223 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2225 reg = FDI_RX_CTL(pipe);
2226 temp = I915_READ(reg);
2227 if (HAS_PCH_CPT(dev)) {
2228 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2229 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2231 temp &= ~FDI_LINK_TRAIN_NONE;
2232 temp |= FDI_LINK_TRAIN_PATTERN_1;
2234 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2239 for (i = 0; i < 4; i++ ) {
2240 reg = FDI_TX_CTL(pipe);
2241 temp = I915_READ(reg);
2242 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2243 temp |= snb_b_fdi_train_param[i];
2244 I915_WRITE(reg, temp);
2249 reg = FDI_RX_IIR(pipe);
2250 temp = I915_READ(reg);
2251 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2253 if (temp & FDI_RX_BIT_LOCK) {
2254 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2255 DRM_DEBUG_KMS("FDI train 1 done.\n");
2260 DRM_ERROR("FDI train 1 fail!\n");
2263 reg = FDI_TX_CTL(pipe);
2264 temp = I915_READ(reg);
2265 temp &= ~FDI_LINK_TRAIN_NONE;
2266 temp |= FDI_LINK_TRAIN_PATTERN_2;
2268 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2270 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2272 I915_WRITE(reg, temp);
2274 reg = FDI_RX_CTL(pipe);
2275 temp = I915_READ(reg);
2276 if (HAS_PCH_CPT(dev)) {
2277 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2278 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2280 temp &= ~FDI_LINK_TRAIN_NONE;
2281 temp |= FDI_LINK_TRAIN_PATTERN_2;
2283 I915_WRITE(reg, temp);
2288 for (i = 0; i < 4; i++ ) {
2289 reg = FDI_TX_CTL(pipe);
2290 temp = I915_READ(reg);
2291 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2292 temp |= snb_b_fdi_train_param[i];
2293 I915_WRITE(reg, temp);
2298 reg = FDI_RX_IIR(pipe);
2299 temp = I915_READ(reg);
2300 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2302 if (temp & FDI_RX_SYMBOL_LOCK) {
2303 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2304 DRM_DEBUG_KMS("FDI train 2 done.\n");
2309 DRM_ERROR("FDI train 2 fail!\n");
2311 DRM_DEBUG_KMS("FDI train done.\n");
2314 /* Manual link training for Ivy Bridge A0 parts */
2315 static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
2317 struct drm_device *dev = crtc->dev;
2318 struct drm_i915_private *dev_priv = dev->dev_private;
2319 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2320 int pipe = intel_crtc->pipe;
2323 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2325 reg = FDI_RX_IMR(pipe);
2326 temp = I915_READ(reg);
2327 temp &= ~FDI_RX_SYMBOL_LOCK;
2328 temp &= ~FDI_RX_BIT_LOCK;
2329 I915_WRITE(reg, temp);
2334 /* enable CPU FDI TX and PCH FDI RX */
2335 reg = FDI_TX_CTL(pipe);
2336 temp = I915_READ(reg);
2338 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2339 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
2340 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
2341 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2342 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2343 temp |= FDI_COMPOSITE_SYNC;
2344 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2346 reg = FDI_RX_CTL(pipe);
2347 temp = I915_READ(reg);
2348 temp &= ~FDI_LINK_TRAIN_AUTO;
2349 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2350 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2351 temp |= FDI_COMPOSITE_SYNC;
2352 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2357 for (i = 0; i < 4; i++ ) {
2358 reg = FDI_TX_CTL(pipe);
2359 temp = I915_READ(reg);
2360 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2361 temp |= snb_b_fdi_train_param[i];
2362 I915_WRITE(reg, temp);
2367 reg = FDI_RX_IIR(pipe);
2368 temp = I915_READ(reg);
2369 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2371 if (temp & FDI_RX_BIT_LOCK ||
2372 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
2373 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2374 DRM_DEBUG_KMS("FDI train 1 done.\n");
2379 DRM_ERROR("FDI train 1 fail!\n");
2382 reg = FDI_TX_CTL(pipe);
2383 temp = I915_READ(reg);
2384 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2385 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
2386 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2387 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2388 I915_WRITE(reg, temp);
2390 reg = FDI_RX_CTL(pipe);
2391 temp = I915_READ(reg);
2392 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2393 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2394 I915_WRITE(reg, temp);
2399 for (i = 0; i < 4; i++ ) {
2400 reg = FDI_TX_CTL(pipe);
2401 temp = I915_READ(reg);
2402 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2403 temp |= snb_b_fdi_train_param[i];
2404 I915_WRITE(reg, temp);
2409 reg = FDI_RX_IIR(pipe);
2410 temp = I915_READ(reg);
2411 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2413 if (temp & FDI_RX_SYMBOL_LOCK) {
2414 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2415 DRM_DEBUG_KMS("FDI train 2 done.\n");
2420 DRM_ERROR("FDI train 2 fail!\n");
2422 DRM_DEBUG_KMS("FDI train done.\n");
2425 static void ironlake_fdi_pll_enable(struct drm_crtc *crtc)
2427 struct drm_device *dev = crtc->dev;
2428 struct drm_i915_private *dev_priv = dev->dev_private;
2429 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2430 int pipe = intel_crtc->pipe;
2433 /* Write the TU size bits so error detection works */
2434 I915_WRITE(FDI_RX_TUSIZE1(pipe),
2435 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
2437 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
2438 reg = FDI_RX_CTL(pipe);
2439 temp = I915_READ(reg);
2440 temp &= ~((0x7 << 19) | (0x7 << 16));
2441 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2442 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2443 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
2448 /* Switch from Rawclk to PCDclk */
2449 temp = I915_READ(reg);
2450 I915_WRITE(reg, temp | FDI_PCDCLK);
2455 /* Enable CPU FDI TX PLL, always on for Ironlake */
2456 reg = FDI_TX_CTL(pipe);
2457 temp = I915_READ(reg);
2458 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
2459 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
2466 static void ironlake_fdi_disable(struct drm_crtc *crtc)
2468 struct drm_device *dev = crtc->dev;
2469 struct drm_i915_private *dev_priv = dev->dev_private;
2470 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2471 int pipe = intel_crtc->pipe;
2474 /* disable CPU FDI tx and PCH FDI rx */
2475 reg = FDI_TX_CTL(pipe);
2476 temp = I915_READ(reg);
2477 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
2480 reg = FDI_RX_CTL(pipe);
2481 temp = I915_READ(reg);
2482 temp &= ~(0x7 << 16);
2483 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2484 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
2489 /* Ironlake workaround, disable clock pointer after downing FDI */
2490 if (HAS_PCH_IBX(dev)) {
2491 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
2492 I915_WRITE(FDI_RX_CHICKEN(pipe),
2493 I915_READ(FDI_RX_CHICKEN(pipe) &
2494 ~FDI_RX_PHASE_SYNC_POINTER_EN));
2497 /* still set train pattern 1 */
2498 reg = FDI_TX_CTL(pipe);
2499 temp = I915_READ(reg);
2500 temp &= ~FDI_LINK_TRAIN_NONE;
2501 temp |= FDI_LINK_TRAIN_PATTERN_1;
2502 I915_WRITE(reg, temp);
2504 reg = FDI_RX_CTL(pipe);
2505 temp = I915_READ(reg);
2506 if (HAS_PCH_CPT(dev)) {
2507 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2508 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2510 temp &= ~FDI_LINK_TRAIN_NONE;
2511 temp |= FDI_LINK_TRAIN_PATTERN_1;
2513 /* BPC in FDI rx is consistent with that in PIPECONF */
2514 temp &= ~(0x07 << 16);
2515 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2516 I915_WRITE(reg, temp);
2523 * When we disable a pipe, we need to clear any pending scanline wait events
2524 * to avoid hanging the ring, which we assume we are waiting on.
2526 static void intel_clear_scanline_wait(struct drm_device *dev)
2528 struct drm_i915_private *dev_priv = dev->dev_private;
2529 struct intel_ring_buffer *ring;
2533 /* Can't break the hang on i8xx */
2536 ring = LP_RING(dev_priv);
2537 tmp = I915_READ_CTL(ring);
2538 if (tmp & RING_WAIT)
2539 I915_WRITE_CTL(ring, tmp);
2542 static void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
2544 struct drm_i915_gem_object *obj;
2545 struct drm_i915_private *dev_priv;
2547 if (crtc->fb == NULL)
2550 obj = to_intel_framebuffer(crtc->fb)->obj;
2551 dev_priv = crtc->dev->dev_private;
2552 wait_event(dev_priv->pending_flip_queue,
2553 atomic_read(&obj->pending_flip) == 0);
2556 static bool intel_crtc_driving_pch(struct drm_crtc *crtc)
2558 struct drm_device *dev = crtc->dev;
2559 struct drm_mode_config *mode_config = &dev->mode_config;
2560 struct intel_encoder *encoder;
2563 * If there's a non-PCH eDP on this crtc, it must be DP_A, and that
2564 * must be driven by its own crtc; no sharing is possible.
2566 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
2567 if (encoder->base.crtc != crtc)
2570 switch (encoder->type) {
2571 case INTEL_OUTPUT_EDP:
2572 if (!intel_encoder_is_pch_edp(&encoder->base))
2582 * Enable PCH resources required for PCH ports:
2584 * - FDI training & RX/TX
2585 * - update transcoder timings
2586 * - DP transcoding bits
2589 static void ironlake_pch_enable(struct drm_crtc *crtc)
2591 struct drm_device *dev = crtc->dev;
2592 struct drm_i915_private *dev_priv = dev->dev_private;
2593 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2594 int pipe = intel_crtc->pipe;
2597 /* For PCH output, training FDI link */
2598 dev_priv->display.fdi_link_train(crtc);
2600 intel_enable_pch_pll(dev_priv, pipe);
2602 if (HAS_PCH_CPT(dev)) {
2603 /* Be sure PCH DPLL SEL is set */
2604 temp = I915_READ(PCH_DPLL_SEL);
2605 if (pipe == 0 && (temp & TRANSA_DPLL_ENABLE) == 0)
2606 temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
2607 else if (pipe == 1 && (temp & TRANSB_DPLL_ENABLE) == 0)
2608 temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
2609 I915_WRITE(PCH_DPLL_SEL, temp);
2612 /* set transcoder timing, panel must allow it */
2613 assert_panel_unlocked(dev_priv, pipe);
2614 I915_WRITE(TRANS_HTOTAL(pipe), I915_READ(HTOTAL(pipe)));
2615 I915_WRITE(TRANS_HBLANK(pipe), I915_READ(HBLANK(pipe)));
2616 I915_WRITE(TRANS_HSYNC(pipe), I915_READ(HSYNC(pipe)));
2618 I915_WRITE(TRANS_VTOTAL(pipe), I915_READ(VTOTAL(pipe)));
2619 I915_WRITE(TRANS_VBLANK(pipe), I915_READ(VBLANK(pipe)));
2620 I915_WRITE(TRANS_VSYNC(pipe), I915_READ(VSYNC(pipe)));
2622 intel_fdi_normal_train(crtc);
2624 /* For PCH DP, enable TRANS_DP_CTL */
2625 if (HAS_PCH_CPT(dev) &&
2626 intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
2627 reg = TRANS_DP_CTL(pipe);
2628 temp = I915_READ(reg);
2629 temp &= ~(TRANS_DP_PORT_SEL_MASK |
2630 TRANS_DP_SYNC_MASK |
2632 temp |= (TRANS_DP_OUTPUT_ENABLE |
2633 TRANS_DP_ENH_FRAMING);
2634 temp |= TRANS_DP_8BPC;
2636 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
2637 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
2638 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
2639 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
2641 switch (intel_trans_dp_port_sel(crtc)) {
2643 temp |= TRANS_DP_PORT_SEL_B;
2646 temp |= TRANS_DP_PORT_SEL_C;
2649 temp |= TRANS_DP_PORT_SEL_D;
2652 DRM_DEBUG_KMS("Wrong PCH DP port return. Guess port B\n");
2653 temp |= TRANS_DP_PORT_SEL_B;
2657 I915_WRITE(reg, temp);
2660 intel_enable_transcoder(dev_priv, pipe);
2663 static void ironlake_crtc_enable(struct drm_crtc *crtc)
2665 struct drm_device *dev = crtc->dev;
2666 struct drm_i915_private *dev_priv = dev->dev_private;
2667 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2668 int pipe = intel_crtc->pipe;
2669 int plane = intel_crtc->plane;
2673 if (intel_crtc->active)
2676 intel_crtc->active = true;
2677 intel_update_watermarks(dev);
2679 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
2680 temp = I915_READ(PCH_LVDS);
2681 if ((temp & LVDS_PORT_EN) == 0)
2682 I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
2685 is_pch_port = intel_crtc_driving_pch(crtc);
2688 ironlake_fdi_pll_enable(crtc);
2690 ironlake_fdi_disable(crtc);
2692 /* Enable panel fitting for LVDS */
2693 if (dev_priv->pch_pf_size &&
2694 (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) || HAS_eDP)) {
2695 /* Force use of hard-coded filter coefficients
2696 * as some pre-programmed values are broken,
2699 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
2700 I915_WRITE(PF_WIN_POS(pipe), dev_priv->pch_pf_pos);
2701 I915_WRITE(PF_WIN_SZ(pipe), dev_priv->pch_pf_size);
2705 * On ILK+ LUT must be loaded before the pipe is running but with
2708 intel_crtc_load_lut(crtc);
2710 intel_enable_pipe(dev_priv, pipe, is_pch_port);
2711 intel_enable_plane(dev_priv, plane, pipe);
2714 ironlake_pch_enable(crtc);
2716 mutex_lock(&dev->struct_mutex);
2717 intel_update_fbc(dev);
2718 mutex_unlock(&dev->struct_mutex);
2720 intel_crtc_update_cursor(crtc, true);
2723 static void ironlake_crtc_disable(struct drm_crtc *crtc)
2725 struct drm_device *dev = crtc->dev;
2726 struct drm_i915_private *dev_priv = dev->dev_private;
2727 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2728 int pipe = intel_crtc->pipe;
2729 int plane = intel_crtc->plane;
2732 if (!intel_crtc->active)
2735 intel_crtc_wait_for_pending_flips(crtc);
2736 drm_vblank_off(dev, pipe);
2737 intel_crtc_update_cursor(crtc, false);
2739 intel_disable_plane(dev_priv, plane, pipe);
2741 if (dev_priv->cfb_plane == plane &&
2742 dev_priv->display.disable_fbc)
2743 dev_priv->display.disable_fbc(dev);
2745 intel_disable_pipe(dev_priv, pipe);
2748 I915_WRITE(PF_CTL(pipe), 0);
2749 I915_WRITE(PF_WIN_SZ(pipe), 0);
2751 ironlake_fdi_disable(crtc);
2753 /* This is a horrible layering violation; we should be doing this in
2754 * the connector/encoder ->prepare instead, but we don't always have
2755 * enough information there about the config to know whether it will
2756 * actually be necessary or just cause undesired flicker.
2758 intel_disable_pch_ports(dev_priv, pipe);
2760 intel_disable_transcoder(dev_priv, pipe);
2762 if (HAS_PCH_CPT(dev)) {
2763 /* disable TRANS_DP_CTL */
2764 reg = TRANS_DP_CTL(pipe);
2765 temp = I915_READ(reg);
2766 temp &= ~(TRANS_DP_OUTPUT_ENABLE | TRANS_DP_PORT_SEL_MASK);
2767 temp |= TRANS_DP_PORT_SEL_NONE;
2768 I915_WRITE(reg, temp);
2770 /* disable DPLL_SEL */
2771 temp = I915_READ(PCH_DPLL_SEL);
2774 temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
2777 temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
2780 /* FIXME: manage transcoder PLLs? */
2781 temp &= ~(TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL);
2786 I915_WRITE(PCH_DPLL_SEL, temp);
2789 /* disable PCH DPLL */
2790 intel_disable_pch_pll(dev_priv, pipe);
2792 /* Switch from PCDclk to Rawclk */
2793 reg = FDI_RX_CTL(pipe);
2794 temp = I915_READ(reg);
2795 I915_WRITE(reg, temp & ~FDI_PCDCLK);
2797 /* Disable CPU FDI TX PLL */
2798 reg = FDI_TX_CTL(pipe);
2799 temp = I915_READ(reg);
2800 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
2805 reg = FDI_RX_CTL(pipe);
2806 temp = I915_READ(reg);
2807 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
2809 /* Wait for the clocks to turn off. */
2813 intel_crtc->active = false;
2814 intel_update_watermarks(dev);
2816 mutex_lock(&dev->struct_mutex);
2817 intel_update_fbc(dev);
2818 intel_clear_scanline_wait(dev);
2819 mutex_unlock(&dev->struct_mutex);
2822 static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode)
2824 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2825 int pipe = intel_crtc->pipe;
2826 int plane = intel_crtc->plane;
2828 /* XXX: When our outputs are all unaware of DPMS modes other than off
2829 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
2832 case DRM_MODE_DPMS_ON:
2833 case DRM_MODE_DPMS_STANDBY:
2834 case DRM_MODE_DPMS_SUSPEND:
2835 DRM_DEBUG_KMS("crtc %d/%d dpms on\n", pipe, plane);
2836 ironlake_crtc_enable(crtc);
2839 case DRM_MODE_DPMS_OFF:
2840 DRM_DEBUG_KMS("crtc %d/%d dpms off\n", pipe, plane);
2841 ironlake_crtc_disable(crtc);
2846 static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
2848 if (!enable && intel_crtc->overlay) {
2849 struct drm_device *dev = intel_crtc->base.dev;
2850 struct drm_i915_private *dev_priv = dev->dev_private;
2852 mutex_lock(&dev->struct_mutex);
2853 dev_priv->mm.interruptible = false;
2854 (void) intel_overlay_switch_off(intel_crtc->overlay);
2855 dev_priv->mm.interruptible = true;
2856 mutex_unlock(&dev->struct_mutex);
2859 /* Let userspace switch the overlay on again. In most cases userspace
2860 * has to recompute where to put it anyway.
2864 static void i9xx_crtc_enable(struct drm_crtc *crtc)
2866 struct drm_device *dev = crtc->dev;
2867 struct drm_i915_private *dev_priv = dev->dev_private;
2868 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2869 int pipe = intel_crtc->pipe;
2870 int plane = intel_crtc->plane;
2872 if (intel_crtc->active)
2875 intel_crtc->active = true;
2876 intel_update_watermarks(dev);
2878 intel_enable_pll(dev_priv, pipe);
2879 intel_enable_pipe(dev_priv, pipe, false);
2880 intel_enable_plane(dev_priv, plane, pipe);
2882 intel_crtc_load_lut(crtc);
2883 intel_update_fbc(dev);
2885 /* Give the overlay scaler a chance to enable if it's on this pipe */
2886 intel_crtc_dpms_overlay(intel_crtc, true);
2887 intel_crtc_update_cursor(crtc, true);
2890 static void i9xx_crtc_disable(struct drm_crtc *crtc)
2892 struct drm_device *dev = crtc->dev;
2893 struct drm_i915_private *dev_priv = dev->dev_private;
2894 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2895 int pipe = intel_crtc->pipe;
2896 int plane = intel_crtc->plane;
2898 if (!intel_crtc->active)
2901 /* Give the overlay scaler a chance to disable if it's on this pipe */
2902 intel_crtc_wait_for_pending_flips(crtc);
2903 drm_vblank_off(dev, pipe);
2904 intel_crtc_dpms_overlay(intel_crtc, false);
2905 intel_crtc_update_cursor(crtc, false);
2907 if (dev_priv->cfb_plane == plane &&
2908 dev_priv->display.disable_fbc)
2909 dev_priv->display.disable_fbc(dev);
2911 intel_disable_plane(dev_priv, plane, pipe);
2912 intel_disable_pipe(dev_priv, pipe);
2913 intel_disable_pll(dev_priv, pipe);
2915 intel_crtc->active = false;
2916 intel_update_fbc(dev);
2917 intel_update_watermarks(dev);
2918 intel_clear_scanline_wait(dev);
2921 static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
2923 /* XXX: When our outputs are all unaware of DPMS modes other than off
2924 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
2927 case DRM_MODE_DPMS_ON:
2928 case DRM_MODE_DPMS_STANDBY:
2929 case DRM_MODE_DPMS_SUSPEND:
2930 i9xx_crtc_enable(crtc);
2932 case DRM_MODE_DPMS_OFF:
2933 i9xx_crtc_disable(crtc);
2939 * Sets the power management mode of the pipe and plane.
2941 static void intel_crtc_dpms(struct drm_crtc *crtc, int mode)
2943 struct drm_device *dev = crtc->dev;
2944 struct drm_i915_private *dev_priv = dev->dev_private;
2945 struct drm_i915_master_private *master_priv;
2946 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2947 int pipe = intel_crtc->pipe;
2950 if (intel_crtc->dpms_mode == mode)
2953 intel_crtc->dpms_mode = mode;
2955 dev_priv->display.dpms(crtc, mode);
2957 if (!dev->primary->master)
2960 master_priv = dev->primary->master->driver_priv;
2961 if (!master_priv->sarea_priv)
2964 enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF;
2968 master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0;
2969 master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0;
2972 master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0;
2973 master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0;
2976 DRM_ERROR("Can't update pipe %c in SAREA\n", pipe_name(pipe));
2981 static void intel_crtc_disable(struct drm_crtc *crtc)
2983 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
2984 struct drm_device *dev = crtc->dev;
2986 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
2989 mutex_lock(&dev->struct_mutex);
2990 i915_gem_object_unpin(to_intel_framebuffer(crtc->fb)->obj);
2991 mutex_unlock(&dev->struct_mutex);
2995 /* Prepare for a mode set.
2997 * Note we could be a lot smarter here. We need to figure out which outputs
2998 * will be enabled, which disabled (in short, how the config will changes)
2999 * and perform the minimum necessary steps to accomplish that, e.g. updating
3000 * watermarks, FBC configuration, making sure PLLs are programmed correctly,
3001 * panel fitting is in the proper state, etc.
3003 static void i9xx_crtc_prepare(struct drm_crtc *crtc)
3005 i9xx_crtc_disable(crtc);
3008 static void i9xx_crtc_commit(struct drm_crtc *crtc)
3010 i9xx_crtc_enable(crtc);
3013 static void ironlake_crtc_prepare(struct drm_crtc *crtc)
3015 ironlake_crtc_disable(crtc);
3018 static void ironlake_crtc_commit(struct drm_crtc *crtc)
3020 ironlake_crtc_enable(crtc);
3023 void intel_encoder_prepare (struct drm_encoder *encoder)
3025 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3026 /* lvds has its own version of prepare see intel_lvds_prepare */
3027 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
3030 void intel_encoder_commit (struct drm_encoder *encoder)
3032 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3033 /* lvds has its own version of commit see intel_lvds_commit */
3034 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
3037 void intel_encoder_destroy(struct drm_encoder *encoder)
3039 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
3041 drm_encoder_cleanup(encoder);
3042 kfree(intel_encoder);
3045 static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
3046 struct drm_display_mode *mode,
3047 struct drm_display_mode *adjusted_mode)
3049 struct drm_device *dev = crtc->dev;
3051 if (HAS_PCH_SPLIT(dev)) {
3052 /* FDI link clock is fixed at 2.7G */
3053 if (mode->clock * 3 > IRONLAKE_FDI_FREQ * 4)
3057 /* XXX some encoders set the crtcinfo, others don't.
3058 * Obviously we need some form of conflict resolution here...
3060 if (adjusted_mode->crtc_htotal == 0)
3061 drm_mode_set_crtcinfo(adjusted_mode, 0);
3066 static int i945_get_display_clock_speed(struct drm_device *dev)
3071 static int i915_get_display_clock_speed(struct drm_device *dev)
3076 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
3081 static int i915gm_get_display_clock_speed(struct drm_device *dev)
3085 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
3087 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
3090 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
3091 case GC_DISPLAY_CLOCK_333_MHZ:
3094 case GC_DISPLAY_CLOCK_190_200_MHZ:
3100 static int i865_get_display_clock_speed(struct drm_device *dev)
3105 static int i855_get_display_clock_speed(struct drm_device *dev)
3108 /* Assume that the hardware is in the high speed state. This
3109 * should be the default.
3111 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
3112 case GC_CLOCK_133_200:
3113 case GC_CLOCK_100_200:
3115 case GC_CLOCK_166_250:
3117 case GC_CLOCK_100_133:
3121 /* Shouldn't happen */
3125 static int i830_get_display_clock_speed(struct drm_device *dev)
3139 fdi_reduce_ratio(u32 *num, u32 *den)
3141 while (*num > 0xffffff || *den > 0xffffff) {
3148 ironlake_compute_m_n(int bits_per_pixel, int nlanes, int pixel_clock,
3149 int link_clock, struct fdi_m_n *m_n)
3151 m_n->tu = 64; /* default size */
3153 /* BUG_ON(pixel_clock > INT_MAX / 36); */
3154 m_n->gmch_m = bits_per_pixel * pixel_clock;
3155 m_n->gmch_n = link_clock * nlanes * 8;
3156 fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n);
3158 m_n->link_m = pixel_clock;
3159 m_n->link_n = link_clock;
3160 fdi_reduce_ratio(&m_n->link_m, &m_n->link_n);
3164 struct intel_watermark_params {
3165 unsigned long fifo_size;
3166 unsigned long max_wm;
3167 unsigned long default_wm;
3168 unsigned long guard_size;
3169 unsigned long cacheline_size;
3172 /* Pineview has different values for various configs */
3173 static const struct intel_watermark_params pineview_display_wm = {
3174 PINEVIEW_DISPLAY_FIFO,
3178 PINEVIEW_FIFO_LINE_SIZE
3180 static const struct intel_watermark_params pineview_display_hplloff_wm = {
3181 PINEVIEW_DISPLAY_FIFO,
3183 PINEVIEW_DFT_HPLLOFF_WM,
3185 PINEVIEW_FIFO_LINE_SIZE
3187 static const struct intel_watermark_params pineview_cursor_wm = {
3188 PINEVIEW_CURSOR_FIFO,
3189 PINEVIEW_CURSOR_MAX_WM,
3190 PINEVIEW_CURSOR_DFT_WM,
3191 PINEVIEW_CURSOR_GUARD_WM,
3192 PINEVIEW_FIFO_LINE_SIZE,
3194 static const struct intel_watermark_params pineview_cursor_hplloff_wm = {
3195 PINEVIEW_CURSOR_FIFO,
3196 PINEVIEW_CURSOR_MAX_WM,
3197 PINEVIEW_CURSOR_DFT_WM,
3198 PINEVIEW_CURSOR_GUARD_WM,
3199 PINEVIEW_FIFO_LINE_SIZE
3201 static const struct intel_watermark_params g4x_wm_info = {
3208 static const struct intel_watermark_params g4x_cursor_wm_info = {
3215 static const struct intel_watermark_params i965_cursor_wm_info = {
3220 I915_FIFO_LINE_SIZE,
3222 static const struct intel_watermark_params i945_wm_info = {
3229 static const struct intel_watermark_params i915_wm_info = {
3236 static const struct intel_watermark_params i855_wm_info = {
3243 static const struct intel_watermark_params i830_wm_info = {
3251 static const struct intel_watermark_params ironlake_display_wm_info = {
3258 static const struct intel_watermark_params ironlake_cursor_wm_info = {
3265 static const struct intel_watermark_params ironlake_display_srwm_info = {
3266 ILK_DISPLAY_SR_FIFO,
3267 ILK_DISPLAY_MAX_SRWM,
3268 ILK_DISPLAY_DFT_SRWM,
3272 static const struct intel_watermark_params ironlake_cursor_srwm_info = {
3274 ILK_CURSOR_MAX_SRWM,
3275 ILK_CURSOR_DFT_SRWM,
3280 static const struct intel_watermark_params sandybridge_display_wm_info = {
3287 static const struct intel_watermark_params sandybridge_cursor_wm_info = {
3294 static const struct intel_watermark_params sandybridge_display_srwm_info = {
3295 SNB_DISPLAY_SR_FIFO,
3296 SNB_DISPLAY_MAX_SRWM,
3297 SNB_DISPLAY_DFT_SRWM,
3301 static const struct intel_watermark_params sandybridge_cursor_srwm_info = {
3303 SNB_CURSOR_MAX_SRWM,
3304 SNB_CURSOR_DFT_SRWM,
3311 * intel_calculate_wm - calculate watermark level
3312 * @clock_in_khz: pixel clock
3313 * @wm: chip FIFO params
3314 * @pixel_size: display pixel size
3315 * @latency_ns: memory latency for the platform
3317 * Calculate the watermark level (the level at which the display plane will
3318 * start fetching from memory again). Each chip has a different display
3319 * FIFO size and allocation, so the caller needs to figure that out and pass
3320 * in the correct intel_watermark_params structure.
3322 * As the pixel clock runs, the FIFO will be drained at a rate that depends
3323 * on the pixel size. When it reaches the watermark level, it'll start
3324 * fetching FIFO line sized based chunks from memory until the FIFO fills
3325 * past the watermark point. If the FIFO drains completely, a FIFO underrun
3326 * will occur, and a display engine hang could result.
3328 static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
3329 const struct intel_watermark_params *wm,
3332 unsigned long latency_ns)
3334 long entries_required, wm_size;
3337 * Note: we need to make sure we don't overflow for various clock &
3339 * clocks go from a few thousand to several hundred thousand.
3340 * latency is usually a few thousand
3342 entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) /
3344 entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size);
3346 DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required);
3348 wm_size = fifo_size - (entries_required + wm->guard_size);
3350 DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size);
3352 /* Don't promote wm_size to unsigned... */
3353 if (wm_size > (long)wm->max_wm)
3354 wm_size = wm->max_wm;
3356 wm_size = wm->default_wm;
3360 struct cxsr_latency {
3363 unsigned long fsb_freq;
3364 unsigned long mem_freq;
3365 unsigned long display_sr;
3366 unsigned long display_hpll_disable;
3367 unsigned long cursor_sr;
3368 unsigned long cursor_hpll_disable;
3371 static const struct cxsr_latency cxsr_latency_table[] = {
3372 {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
3373 {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
3374 {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
3375 {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */
3376 {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */
3378 {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
3379 {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
3380 {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
3381 {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */
3382 {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */
3384 {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
3385 {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
3386 {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
3387 {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */
3388 {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */
3390 {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
3391 {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
3392 {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
3393 {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */
3394 {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */
3396 {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
3397 {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
3398 {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
3399 {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */
3400 {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */
3402 {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
3403 {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
3404 {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
3405 {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */
3406 {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */
3409 static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop,
3414 const struct cxsr_latency *latency;
3417 if (fsb == 0 || mem == 0)
3420 for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
3421 latency = &cxsr_latency_table[i];
3422 if (is_desktop == latency->is_desktop &&
3423 is_ddr3 == latency->is_ddr3 &&
3424 fsb == latency->fsb_freq && mem == latency->mem_freq)
3428 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
3433 static void pineview_disable_cxsr(struct drm_device *dev)
3435 struct drm_i915_private *dev_priv = dev->dev_private;
3437 /* deactivate cxsr */
3438 I915_WRITE(DSPFW3, I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN);
3442 * Latency for FIFO fetches is dependent on several factors:
3443 * - memory configuration (speed, channels)
3445 * - current MCH state
3446 * It can be fairly high in some situations, so here we assume a fairly
3447 * pessimal value. It's a tradeoff between extra memory fetches (if we
3448 * set this value too high, the FIFO will fetch frequently to stay full)
3449 * and power consumption (set it too low to save power and we might see
3450 * FIFO underruns and display "flicker").
3452 * A value of 5us seems to be a good balance; safe for very low end
3453 * platforms but not overly aggressive on lower latency configs.
3455 static const int latency_ns = 5000;
3457 static int i9xx_get_fifo_size(struct drm_device *dev, int plane)
3459 struct drm_i915_private *dev_priv = dev->dev_private;
3460 uint32_t dsparb = I915_READ(DSPARB);
3463 size = dsparb & 0x7f;
3465 size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size;
3467 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
3468 plane ? "B" : "A", size);
3473 static int i85x_get_fifo_size(struct drm_device *dev, int plane)
3475 struct drm_i915_private *dev_priv = dev->dev_private;
3476 uint32_t dsparb = I915_READ(DSPARB);
3479 size = dsparb & 0x1ff;
3481 size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size;
3482 size >>= 1; /* Convert to cachelines */
3484 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
3485 plane ? "B" : "A", size);
3490 static int i845_get_fifo_size(struct drm_device *dev, int plane)
3492 struct drm_i915_private *dev_priv = dev->dev_private;
3493 uint32_t dsparb = I915_READ(DSPARB);
3496 size = dsparb & 0x7f;
3497 size >>= 2; /* Convert to cachelines */
3499 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
3506 static int i830_get_fifo_size(struct drm_device *dev, int plane)
3508 struct drm_i915_private *dev_priv = dev->dev_private;
3509 uint32_t dsparb = I915_READ(DSPARB);
3512 size = dsparb & 0x7f;
3513 size >>= 1; /* Convert to cachelines */
3515 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
3516 plane ? "B" : "A", size);
3521 static struct drm_crtc *single_enabled_crtc(struct drm_device *dev)
3523 struct drm_crtc *crtc, *enabled = NULL;
3525 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
3526 if (crtc->enabled && crtc->fb) {
3536 static void pineview_update_wm(struct drm_device *dev)
3538 struct drm_i915_private *dev_priv = dev->dev_private;
3539 struct drm_crtc *crtc;
3540 const struct cxsr_latency *latency;
3544 latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3,
3545 dev_priv->fsb_freq, dev_priv->mem_freq);
3547 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
3548 pineview_disable_cxsr(dev);
3552 crtc = single_enabled_crtc(dev);
3554 int clock = crtc->mode.clock;
3555 int pixel_size = crtc->fb->bits_per_pixel / 8;
3558 wm = intel_calculate_wm(clock, &pineview_display_wm,
3559 pineview_display_wm.fifo_size,
3560 pixel_size, latency->display_sr);
3561 reg = I915_READ(DSPFW1);
3562 reg &= ~DSPFW_SR_MASK;
3563 reg |= wm << DSPFW_SR_SHIFT;
3564 I915_WRITE(DSPFW1, reg);
3565 DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
3568 wm = intel_calculate_wm(clock, &pineview_cursor_wm,
3569 pineview_display_wm.fifo_size,
3570 pixel_size, latency->cursor_sr);
3571 reg = I915_READ(DSPFW3);
3572 reg &= ~DSPFW_CURSOR_SR_MASK;
3573 reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT;
3574 I915_WRITE(DSPFW3, reg);
3576 /* Display HPLL off SR */
3577 wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm,
3578 pineview_display_hplloff_wm.fifo_size,
3579 pixel_size, latency->display_hpll_disable);
3580 reg = I915_READ(DSPFW3);
3581 reg &= ~DSPFW_HPLL_SR_MASK;
3582 reg |= wm & DSPFW_HPLL_SR_MASK;
3583 I915_WRITE(DSPFW3, reg);
3585 /* cursor HPLL off SR */
3586 wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm,
3587 pineview_display_hplloff_wm.fifo_size,
3588 pixel_size, latency->cursor_hpll_disable);
3589 reg = I915_READ(DSPFW3);
3590 reg &= ~DSPFW_HPLL_CURSOR_MASK;
3591 reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT;
3592 I915_WRITE(DSPFW3, reg);
3593 DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
3597 I915_READ(DSPFW3) | PINEVIEW_SELF_REFRESH_EN);
3598 DRM_DEBUG_KMS("Self-refresh is enabled\n");
3600 pineview_disable_cxsr(dev);
3601 DRM_DEBUG_KMS("Self-refresh is disabled\n");
3605 static bool g4x_compute_wm0(struct drm_device *dev,
3607 const struct intel_watermark_params *display,
3608 int display_latency_ns,
3609 const struct intel_watermark_params *cursor,
3610 int cursor_latency_ns,
3614 struct drm_crtc *crtc;
3615 int htotal, hdisplay, clock, pixel_size;
3616 int line_time_us, line_count;
3617 int entries, tlb_miss;
3619 crtc = intel_get_crtc_for_plane(dev, plane);
3620 if (crtc->fb == NULL || !crtc->enabled) {
3621 *cursor_wm = cursor->guard_size;
3622 *plane_wm = display->guard_size;
3626 htotal = crtc->mode.htotal;
3627 hdisplay = crtc->mode.hdisplay;
3628 clock = crtc->mode.clock;
3629 pixel_size = crtc->fb->bits_per_pixel / 8;
3631 /* Use the small buffer method to calculate plane watermark */
3632 entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000;
3633 tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8;
3635 entries += tlb_miss;
3636 entries = DIV_ROUND_UP(entries, display->cacheline_size);
3637 *plane_wm = entries + display->guard_size;
3638 if (*plane_wm > (int)display->max_wm)
3639 *plane_wm = display->max_wm;
3641 /* Use the large buffer method to calculate cursor watermark */
3642 line_time_us = ((htotal * 1000) / clock);
3643 line_count = (cursor_latency_ns / line_time_us + 1000) / 1000;
3644 entries = line_count * 64 * pixel_size;
3645 tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8;
3647 entries += tlb_miss;
3648 entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
3649 *cursor_wm = entries + cursor->guard_size;
3650 if (*cursor_wm > (int)cursor->max_wm)
3651 *cursor_wm = (int)cursor->max_wm;
3657 * Check the wm result.
3659 * If any calculated watermark values is larger than the maximum value that
3660 * can be programmed into the associated watermark register, that watermark
3663 static bool g4x_check_srwm(struct drm_device *dev,
3664 int display_wm, int cursor_wm,
3665 const struct intel_watermark_params *display,
3666 const struct intel_watermark_params *cursor)
3668 DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n",
3669 display_wm, cursor_wm);
3671 if (display_wm > display->max_wm) {
3672 DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n",
3673 display_wm, display->max_wm);
3677 if (cursor_wm > cursor->max_wm) {
3678 DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n",
3679 cursor_wm, cursor->max_wm);
3683 if (!(display_wm || cursor_wm)) {
3684 DRM_DEBUG_KMS("SR latency is 0, disabling\n");
3691 static bool g4x_compute_srwm(struct drm_device *dev,
3694 const struct intel_watermark_params *display,
3695 const struct intel_watermark_params *cursor,
3696 int *display_wm, int *cursor_wm)
3698 struct drm_crtc *crtc;
3699 int hdisplay, htotal, pixel_size, clock;
3700 unsigned long line_time_us;
3701 int line_count, line_size;
3706 *display_wm = *cursor_wm = 0;
3710 crtc = intel_get_crtc_for_plane(dev, plane);
3711 hdisplay = crtc->mode.hdisplay;
3712 htotal = crtc->mode.htotal;
3713 clock = crtc->mode.clock;
3714 pixel_size = crtc->fb->bits_per_pixel / 8;
3716 line_time_us = (htotal * 1000) / clock;
3717 line_count = (latency_ns / line_time_us + 1000) / 1000;
3718 line_size = hdisplay * pixel_size;
3720 /* Use the minimum of the small and large buffer method for primary */
3721 small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
3722 large = line_count * line_size;
3724 entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
3725 *display_wm = entries + display->guard_size;
3727 /* calculate the self-refresh watermark for display cursor */
3728 entries = line_count * pixel_size * 64;
3729 entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
3730 *cursor_wm = entries + cursor->guard_size;
3732 return g4x_check_srwm(dev,
3733 *display_wm, *cursor_wm,
3737 #define single_plane_enabled(mask) is_power_of_2(mask)
3739 static void g4x_update_wm(struct drm_device *dev)
3741 static const int sr_latency_ns = 12000;
3742 struct drm_i915_private *dev_priv = dev->dev_private;
3743 int planea_wm, planeb_wm, cursora_wm, cursorb_wm;
3744 int plane_sr, cursor_sr;
3745 unsigned int enabled = 0;
3747 if (g4x_compute_wm0(dev, 0,
3748 &g4x_wm_info, latency_ns,
3749 &g4x_cursor_wm_info, latency_ns,
3750 &planea_wm, &cursora_wm))
3753 if (g4x_compute_wm0(dev, 1,
3754 &g4x_wm_info, latency_ns,
3755 &g4x_cursor_wm_info, latency_ns,
3756 &planeb_wm, &cursorb_wm))
3759 plane_sr = cursor_sr = 0;
3760 if (single_plane_enabled(enabled) &&
3761 g4x_compute_srwm(dev, ffs(enabled) - 1,
3764 &g4x_cursor_wm_info,
3765 &plane_sr, &cursor_sr))
3766 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
3768 I915_WRITE(FW_BLC_SELF,
3769 I915_READ(FW_BLC_SELF) & ~FW_BLC_SELF_EN);
3771 DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n",
3772 planea_wm, cursora_wm,
3773 planeb_wm, cursorb_wm,
3774 plane_sr, cursor_sr);
3777 (plane_sr << DSPFW_SR_SHIFT) |
3778 (cursorb_wm << DSPFW_CURSORB_SHIFT) |
3779 (planeb_wm << DSPFW_PLANEB_SHIFT) |
3782 (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
3783 (cursora_wm << DSPFW_CURSORA_SHIFT));
3784 /* HPLL off in SR has some issues on G4x... disable it */
3786 (I915_READ(DSPFW3) & ~DSPFW_HPLL_SR_EN) |
3787 (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
3790 static void i965_update_wm(struct drm_device *dev)
3792 struct drm_i915_private *dev_priv = dev->dev_private;
3793 struct drm_crtc *crtc;
3797 /* Calc sr entries for one plane configs */
3798 crtc = single_enabled_crtc(dev);
3800 /* self-refresh has much higher latency */
3801 static const int sr_latency_ns = 12000;
3802 int clock = crtc->mode.clock;
3803 int htotal = crtc->mode.htotal;
3804 int hdisplay = crtc->mode.hdisplay;
3805 int pixel_size = crtc->fb->bits_per_pixel / 8;
3806 unsigned long line_time_us;
3809 line_time_us = ((htotal * 1000) / clock);
3811 /* Use ns/us then divide to preserve precision */
3812 entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
3813 pixel_size * hdisplay;
3814 entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE);
3815 srwm = I965_FIFO_SIZE - entries;
3819 DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n",
3822 entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
3824 entries = DIV_ROUND_UP(entries,
3825 i965_cursor_wm_info.cacheline_size);
3826 cursor_sr = i965_cursor_wm_info.fifo_size -
3827 (entries + i965_cursor_wm_info.guard_size);
3829 if (cursor_sr > i965_cursor_wm_info.max_wm)
3830 cursor_sr = i965_cursor_wm_info.max_wm;
3832 DRM_DEBUG_KMS("self-refresh watermark: display plane %d "
3833 "cursor %d\n", srwm, cursor_sr);
3835 if (IS_CRESTLINE(dev))
3836 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
3838 /* Turn off self refresh if both pipes are enabled */
3839 if (IS_CRESTLINE(dev))
3840 I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
3844 DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
3847 /* 965 has limitations... */
3848 I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) |
3849 (8 << 16) | (8 << 8) | (8 << 0));
3850 I915_WRITE(DSPFW2, (8 << 8) | (8 << 0));
3851 /* update cursor SR watermark */
3852 I915_WRITE(DSPFW3, (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
3855 static void i9xx_update_wm(struct drm_device *dev)
3857 struct drm_i915_private *dev_priv = dev->dev_private;
3858 const struct intel_watermark_params *wm_info;
3863 int planea_wm, planeb_wm;
3864 struct drm_crtc *crtc, *enabled = NULL;
3867 wm_info = &i945_wm_info;
3868 else if (!IS_GEN2(dev))
3869 wm_info = &i915_wm_info;
3871 wm_info = &i855_wm_info;
3873 fifo_size = dev_priv->display.get_fifo_size(dev, 0);
3874 crtc = intel_get_crtc_for_plane(dev, 0);
3875 if (crtc->enabled && crtc->fb) {
3876 planea_wm = intel_calculate_wm(crtc->mode.clock,
3878 crtc->fb->bits_per_pixel / 8,
3882 planea_wm = fifo_size - wm_info->guard_size;
3884 fifo_size = dev_priv->display.get_fifo_size(dev, 1);
3885 crtc = intel_get_crtc_for_plane(dev, 1);
3886 if (crtc->enabled && crtc->fb) {
3887 planeb_wm = intel_calculate_wm(crtc->mode.clock,
3889 crtc->fb->bits_per_pixel / 8,
3891 if (enabled == NULL)
3896 planeb_wm = fifo_size - wm_info->guard_size;
3898 DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
3901 * Overlay gets an aggressive default since video jitter is bad.
3905 /* Play safe and disable self-refresh before adjusting watermarks. */
3906 if (IS_I945G(dev) || IS_I945GM(dev))
3907 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | 0);
3908 else if (IS_I915GM(dev))
3909 I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN);
3911 /* Calc sr entries for one plane configs */
3912 if (HAS_FW_BLC(dev) && enabled) {
3913 /* self-refresh has much higher latency */
3914 static const int sr_latency_ns = 6000;
3915 int clock = enabled->mode.clock;
3916 int htotal = enabled->mode.htotal;
3917 int hdisplay = enabled->mode.hdisplay;
3918 int pixel_size = enabled->fb->bits_per_pixel / 8;
3919 unsigned long line_time_us;
3922 line_time_us = (htotal * 1000) / clock;
3924 /* Use ns/us then divide to preserve precision */
3925 entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
3926 pixel_size * hdisplay;
3927 entries = DIV_ROUND_UP(entries, wm_info->cacheline_size);
3928 DRM_DEBUG_KMS("self-refresh entries: %d\n", entries);
3929 srwm = wm_info->fifo_size - entries;
3933 if (IS_I945G(dev) || IS_I945GM(dev))
3934 I915_WRITE(FW_BLC_SELF,
3935 FW_BLC_SELF_FIFO_MASK | (srwm & 0xff));
3936 else if (IS_I915GM(dev))
3937 I915_WRITE(FW_BLC_SELF, srwm & 0x3f);
3940 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
3941 planea_wm, planeb_wm, cwm, srwm);
3943 fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
3944 fwater_hi = (cwm & 0x1f);
3946 /* Set request length to 8 cachelines per fetch */
3947 fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
3948 fwater_hi = fwater_hi | (1 << 8);
3950 I915_WRITE(FW_BLC, fwater_lo);
3951 I915_WRITE(FW_BLC2, fwater_hi);
3953 if (HAS_FW_BLC(dev)) {
3955 if (IS_I945G(dev) || IS_I945GM(dev))
3956 I915_WRITE(FW_BLC_SELF,
3957 FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN);
3958 else if (IS_I915GM(dev))
3959 I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN);
3960 DRM_DEBUG_KMS("memory self refresh enabled\n");
3962 DRM_DEBUG_KMS("memory self refresh disabled\n");
3966 static void i830_update_wm(struct drm_device *dev)
3968 struct drm_i915_private *dev_priv = dev->dev_private;
3969 struct drm_crtc *crtc;
3973 crtc = single_enabled_crtc(dev);
3977 planea_wm = intel_calculate_wm(crtc->mode.clock, &i830_wm_info,
3978 dev_priv->display.get_fifo_size(dev, 0),
3979 crtc->fb->bits_per_pixel / 8,
3981 fwater_lo = I915_READ(FW_BLC) & ~0xfff;
3982 fwater_lo |= (3<<8) | planea_wm;
3984 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm);
3986 I915_WRITE(FW_BLC, fwater_lo);
3989 #define ILK_LP0_PLANE_LATENCY 700
3990 #define ILK_LP0_CURSOR_LATENCY 1300
3993 * Check the wm result.
3995 * If any calculated watermark values is larger than the maximum value that
3996 * can be programmed into the associated watermark register, that watermark
3999 static bool ironlake_check_srwm(struct drm_device *dev, int level,
4000 int fbc_wm, int display_wm, int cursor_wm,
4001 const struct intel_watermark_params *display,
4002 const struct intel_watermark_params *cursor)
4004 struct drm_i915_private *dev_priv = dev->dev_private;
4006 DRM_DEBUG_KMS("watermark %d: display plane %d, fbc lines %d,"
4007 " cursor %d\n", level, display_wm, fbc_wm, cursor_wm);
4009 if (fbc_wm > SNB_FBC_MAX_SRWM) {
4010 DRM_DEBUG_KMS("fbc watermark(%d) is too large(%d), disabling wm%d+\n",
4011 fbc_wm, SNB_FBC_MAX_SRWM, level);
4013 /* fbc has it's own way to disable FBC WM */
4014 I915_WRITE(DISP_ARB_CTL,
4015 I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS);
4019 if (display_wm > display->max_wm) {
4020 DRM_DEBUG_KMS("display watermark(%d) is too large(%d), disabling wm%d+\n",
4021 display_wm, SNB_DISPLAY_MAX_SRWM, level);
4025 if (cursor_wm > cursor->max_wm) {
4026 DRM_DEBUG_KMS("cursor watermark(%d) is too large(%d), disabling wm%d+\n",
4027 cursor_wm, SNB_CURSOR_MAX_SRWM, level);
4031 if (!(fbc_wm || display_wm || cursor_wm)) {
4032 DRM_DEBUG_KMS("latency %d is 0, disabling wm%d+\n", level, level);
4040 * Compute watermark values of WM[1-3],
4042 static bool ironlake_compute_srwm(struct drm_device *dev, int level, int plane,
4044 const struct intel_watermark_params *display,
4045 const struct intel_watermark_params *cursor,
4046 int *fbc_wm, int *display_wm, int *cursor_wm)
4048 struct drm_crtc *crtc;
4049 unsigned long line_time_us;
4050 int hdisplay, htotal, pixel_size, clock;
4051 int line_count, line_size;
4056 *fbc_wm = *display_wm = *cursor_wm = 0;
4060 crtc = intel_get_crtc_for_plane(dev, plane);
4061 hdisplay = crtc->mode.hdisplay;
4062 htotal = crtc->mode.htotal;
4063 clock = crtc->mode.clock;
4064 pixel_size = crtc->fb->bits_per_pixel / 8;
4066 line_time_us = (htotal * 1000) / clock;
4067 line_count = (latency_ns / line_time_us + 1000) / 1000;
4068 line_size = hdisplay * pixel_size;
4070 /* Use the minimum of the small and large buffer method for primary */
4071 small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
4072 large = line_count * line_size;
4074 entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
4075 *display_wm = entries + display->guard_size;
4079 * FBC WM = ((Final Primary WM * 64) / number of bytes per line) + 2
4081 *fbc_wm = DIV_ROUND_UP(*display_wm * 64, line_size) + 2;
4083 /* calculate the self-refresh watermark for display cursor */
4084 entries = line_count * pixel_size * 64;
4085 entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
4086 *cursor_wm = entries + cursor->guard_size;
4088 return ironlake_check_srwm(dev, level,
4089 *fbc_wm, *display_wm, *cursor_wm,
4093 static void ironlake_update_wm(struct drm_device *dev)
4095 struct drm_i915_private *dev_priv = dev->dev_private;
4096 int fbc_wm, plane_wm, cursor_wm;
4097 unsigned int enabled;
4100 if (g4x_compute_wm0(dev, 0,
4101 &ironlake_display_wm_info,
4102 ILK_LP0_PLANE_LATENCY,
4103 &ironlake_cursor_wm_info,
4104 ILK_LP0_CURSOR_LATENCY,
4105 &plane_wm, &cursor_wm)) {
4106 I915_WRITE(WM0_PIPEA_ILK,
4107 (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
4108 DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
4109 " plane %d, " "cursor: %d\n",
4110 plane_wm, cursor_wm);
4114 if (g4x_compute_wm0(dev, 1,
4115 &ironlake_display_wm_info,
4116 ILK_LP0_PLANE_LATENCY,
4117 &ironlake_cursor_wm_info,
4118 ILK_LP0_CURSOR_LATENCY,
4119 &plane_wm, &cursor_wm)) {
4120 I915_WRITE(WM0_PIPEB_ILK,
4121 (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
4122 DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
4123 " plane %d, cursor: %d\n",
4124 plane_wm, cursor_wm);
4129 * Calculate and update the self-refresh watermark only when one
4130 * display plane is used.
4132 I915_WRITE(WM3_LP_ILK, 0);
4133 I915_WRITE(WM2_LP_ILK, 0);
4134 I915_WRITE(WM1_LP_ILK, 0);
4136 if (!single_plane_enabled(enabled))
4138 enabled = ffs(enabled) - 1;
4141 if (!ironlake_compute_srwm(dev, 1, enabled,
4142 ILK_READ_WM1_LATENCY() * 500,
4143 &ironlake_display_srwm_info,
4144 &ironlake_cursor_srwm_info,
4145 &fbc_wm, &plane_wm, &cursor_wm))
4148 I915_WRITE(WM1_LP_ILK,
4150 (ILK_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4151 (fbc_wm << WM1_LP_FBC_SHIFT) |
4152 (plane_wm << WM1_LP_SR_SHIFT) |
4156 if (!ironlake_compute_srwm(dev, 2, enabled,
4157 ILK_READ_WM2_LATENCY() * 500,
4158 &ironlake_display_srwm_info,
4159 &ironlake_cursor_srwm_info,
4160 &fbc_wm, &plane_wm, &cursor_wm))
4163 I915_WRITE(WM2_LP_ILK,
4165 (ILK_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4166 (fbc_wm << WM1_LP_FBC_SHIFT) |
4167 (plane_wm << WM1_LP_SR_SHIFT) |
4171 * WM3 is unsupported on ILK, probably because we don't have latency
4172 * data for that power state
4176 static void sandybridge_update_wm(struct drm_device *dev)
4178 struct drm_i915_private *dev_priv = dev->dev_private;
4179 int latency = SNB_READ_WM0_LATENCY() * 100; /* In unit 0.1us */
4180 int fbc_wm, plane_wm, cursor_wm;
4181 unsigned int enabled;
4184 if (g4x_compute_wm0(dev, 0,
4185 &sandybridge_display_wm_info, latency,
4186 &sandybridge_cursor_wm_info, latency,
4187 &plane_wm, &cursor_wm)) {
4188 I915_WRITE(WM0_PIPEA_ILK,
4189 (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
4190 DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
4191 " plane %d, " "cursor: %d\n",
4192 plane_wm, cursor_wm);
4196 if (g4x_compute_wm0(dev, 1,
4197 &sandybridge_display_wm_info, latency,
4198 &sandybridge_cursor_wm_info, latency,
4199 &plane_wm, &cursor_wm)) {
4200 I915_WRITE(WM0_PIPEB_ILK,
4201 (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
4202 DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
4203 " plane %d, cursor: %d\n",
4204 plane_wm, cursor_wm);
4209 * Calculate and update the self-refresh watermark only when one
4210 * display plane is used.
4212 * SNB support 3 levels of watermark.
4214 * WM1/WM2/WM2 watermarks have to be enabled in the ascending order,
4215 * and disabled in the descending order
4218 I915_WRITE(WM3_LP_ILK, 0);
4219 I915_WRITE(WM2_LP_ILK, 0);
4220 I915_WRITE(WM1_LP_ILK, 0);
4222 if (!single_plane_enabled(enabled))
4224 enabled = ffs(enabled) - 1;
4227 if (!ironlake_compute_srwm(dev, 1, enabled,
4228 SNB_READ_WM1_LATENCY() * 500,
4229 &sandybridge_display_srwm_info,
4230 &sandybridge_cursor_srwm_info,
4231 &fbc_wm, &plane_wm, &cursor_wm))
4234 I915_WRITE(WM1_LP_ILK,
4236 (SNB_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4237 (fbc_wm << WM1_LP_FBC_SHIFT) |
4238 (plane_wm << WM1_LP_SR_SHIFT) |
4242 if (!ironlake_compute_srwm(dev, 2, enabled,
4243 SNB_READ_WM2_LATENCY() * 500,
4244 &sandybridge_display_srwm_info,
4245 &sandybridge_cursor_srwm_info,
4246 &fbc_wm, &plane_wm, &cursor_wm))
4249 I915_WRITE(WM2_LP_ILK,
4251 (SNB_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4252 (fbc_wm << WM1_LP_FBC_SHIFT) |
4253 (plane_wm << WM1_LP_SR_SHIFT) |
4257 if (!ironlake_compute_srwm(dev, 3, enabled,
4258 SNB_READ_WM3_LATENCY() * 500,
4259 &sandybridge_display_srwm_info,
4260 &sandybridge_cursor_srwm_info,
4261 &fbc_wm, &plane_wm, &cursor_wm))
4264 I915_WRITE(WM3_LP_ILK,
4266 (SNB_READ_WM3_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4267 (fbc_wm << WM1_LP_FBC_SHIFT) |
4268 (plane_wm << WM1_LP_SR_SHIFT) |
4273 * intel_update_watermarks - update FIFO watermark values based on current modes
4275 * Calculate watermark values for the various WM regs based on current mode
4276 * and plane configuration.
4278 * There are several cases to deal with here:
4279 * - normal (i.e. non-self-refresh)
4280 * - self-refresh (SR) mode
4281 * - lines are large relative to FIFO size (buffer can hold up to 2)
4282 * - lines are small relative to FIFO size (buffer can hold more than 2
4283 * lines), so need to account for TLB latency
4285 * The normal calculation is:
4286 * watermark = dotclock * bytes per pixel * latency
4287 * where latency is platform & configuration dependent (we assume pessimal
4290 * The SR calculation is:
4291 * watermark = (trunc(latency/line time)+1) * surface width *
4294 * line time = htotal / dotclock
4295 * surface width = hdisplay for normal plane and 64 for cursor
4296 * and latency is assumed to be high, as above.
4298 * The final value programmed to the register should always be rounded up,
4299 * and include an extra 2 entries to account for clock crossings.
4301 * We don't use the sprite, so we can ignore that. And on Crestline we have
4302 * to set the non-SR watermarks to 8.
4304 static void intel_update_watermarks(struct drm_device *dev)
4306 struct drm_i915_private *dev_priv = dev->dev_private;
4308 if (dev_priv->display.update_wm)
4309 dev_priv->display.update_wm(dev);
4312 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
4314 return dev_priv->lvds_use_ssc && i915_panel_use_ssc
4315 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
4318 static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
4319 struct drm_display_mode *mode,
4320 struct drm_display_mode *adjusted_mode,
4322 struct drm_framebuffer *old_fb)
4324 struct drm_device *dev = crtc->dev;
4325 struct drm_i915_private *dev_priv = dev->dev_private;
4326 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4327 int pipe = intel_crtc->pipe;
4328 int plane = intel_crtc->plane;
4329 int refclk, num_connectors = 0;
4330 intel_clock_t clock, reduced_clock;
4331 u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
4332 bool ok, has_reduced_clock = false, is_sdvo = false, is_dvo = false;
4333 bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
4334 struct drm_mode_config *mode_config = &dev->mode_config;
4335 struct intel_encoder *encoder;
4336 const intel_limit_t *limit;
4341 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
4342 if (encoder->base.crtc != crtc)
4345 switch (encoder->type) {
4346 case INTEL_OUTPUT_LVDS:
4349 case INTEL_OUTPUT_SDVO:
4350 case INTEL_OUTPUT_HDMI:
4352 if (encoder->needs_tv_clock)
4355 case INTEL_OUTPUT_DVO:
4358 case INTEL_OUTPUT_TVOUT:
4361 case INTEL_OUTPUT_ANALOG:
4364 case INTEL_OUTPUT_DISPLAYPORT:
4372 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
4373 refclk = dev_priv->lvds_ssc_freq * 1000;
4374 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
4376 } else if (!IS_GEN2(dev)) {
4383 * Returns a set of divisors for the desired target clock with the given
4384 * refclk, or FALSE. The returned values represent the clock equation:
4385 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
4387 limit = intel_limit(crtc, refclk);
4388 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock);
4390 DRM_ERROR("Couldn't find PLL settings for mode!\n");
4394 /* Ensure that the cursor is valid for the new mode before changing... */
4395 intel_crtc_update_cursor(crtc, true);
4397 if (is_lvds && dev_priv->lvds_downclock_avail) {
4398 has_reduced_clock = limit->find_pll(limit, crtc,
4399 dev_priv->lvds_downclock,
4402 if (has_reduced_clock && (clock.p != reduced_clock.p)) {
4404 * If the different P is found, it means that we can't
4405 * switch the display clock by using the FP0/FP1.
4406 * In such case we will disable the LVDS downclock
4409 DRM_DEBUG_KMS("Different P is found for "
4410 "LVDS clock/downclock\n");
4411 has_reduced_clock = 0;
4414 /* SDVO TV has fixed PLL values depend on its clock range,
4415 this mirrors vbios setting. */
4416 if (is_sdvo && is_tv) {
4417 if (adjusted_mode->clock >= 100000
4418 && adjusted_mode->clock < 140500) {
4424 } else if (adjusted_mode->clock >= 140500
4425 && adjusted_mode->clock <= 200000) {
4434 if (IS_PINEVIEW(dev)) {
4435 fp = (1 << clock.n) << 16 | clock.m1 << 8 | clock.m2;
4436 if (has_reduced_clock)
4437 fp2 = (1 << reduced_clock.n) << 16 |
4438 reduced_clock.m1 << 8 | reduced_clock.m2;
4440 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
4441 if (has_reduced_clock)
4442 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
4446 dpll = DPLL_VGA_MODE_DIS;
4448 if (!IS_GEN2(dev)) {
4450 dpll |= DPLLB_MODE_LVDS;
4452 dpll |= DPLLB_MODE_DAC_SERIAL;
4454 int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
4455 if (pixel_multiplier > 1) {
4456 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
4457 dpll |= (pixel_multiplier - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
4459 dpll |= DPLL_DVO_HIGH_SPEED;
4462 dpll |= DPLL_DVO_HIGH_SPEED;
4464 /* compute bitmask from p1 value */
4465 if (IS_PINEVIEW(dev))
4466 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
4468 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
4469 if (IS_G4X(dev) && has_reduced_clock)
4470 dpll |= (1 << (reduced_clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
4474 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
4477 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
4480 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
4483 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
4486 if (INTEL_INFO(dev)->gen >= 4)
4487 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
4490 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
4493 dpll |= PLL_P1_DIVIDE_BY_TWO;
4495 dpll |= (clock.p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
4497 dpll |= PLL_P2_DIVIDE_BY_4;
4501 if (is_sdvo && is_tv)
4502 dpll |= PLL_REF_INPUT_TVCLKINBC;
4504 /* XXX: just matching BIOS for now */
4505 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
4507 else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
4508 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
4510 dpll |= PLL_REF_INPUT_DREFCLK;
4512 /* setup pipeconf */
4513 pipeconf = I915_READ(PIPECONF(pipe));
4515 /* Set up the display plane register */
4516 dspcntr = DISPPLANE_GAMMA_ENABLE;
4518 /* Ironlake's plane is forced to pipe, bit 24 is to
4519 enable color space conversion */
4521 dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
4523 dspcntr |= DISPPLANE_SEL_PIPE_B;
4525 if (pipe == 0 && INTEL_INFO(dev)->gen < 4) {
4526 /* Enable pixel doubling when the dot clock is > 90% of the (display)
4529 * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
4533 dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
4534 pipeconf |= PIPECONF_DOUBLE_WIDE;
4536 pipeconf &= ~PIPECONF_DOUBLE_WIDE;
4539 dpll |= DPLL_VCO_ENABLE;
4541 DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
4542 drm_mode_debug_printmodeline(mode);
4544 I915_WRITE(FP0(pipe), fp);
4545 I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
4547 POSTING_READ(DPLL(pipe));
4550 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
4551 * This is an exception to the general rule that mode_set doesn't turn
4555 temp = I915_READ(LVDS);
4556 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
4558 temp |= LVDS_PIPEB_SELECT;
4560 temp &= ~LVDS_PIPEB_SELECT;
4562 /* set the corresponsding LVDS_BORDER bit */
4563 temp |= dev_priv->lvds_border_bits;
4564 /* Set the B0-B3 data pairs corresponding to whether we're going to
4565 * set the DPLLs for dual-channel mode or not.
4568 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
4570 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
4572 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
4573 * appropriately here, but we need to look more thoroughly into how
4574 * panels behave in the two modes.
4576 /* set the dithering flag on LVDS as needed */
4577 if (INTEL_INFO(dev)->gen >= 4) {
4578 if (dev_priv->lvds_dither)
4579 temp |= LVDS_ENABLE_DITHER;
4581 temp &= ~LVDS_ENABLE_DITHER;
4583 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
4584 lvds_sync |= LVDS_HSYNC_POLARITY;
4585 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
4586 lvds_sync |= LVDS_VSYNC_POLARITY;
4587 if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
4589 char flags[2] = "-+";
4590 DRM_INFO("Changing LVDS panel from "
4591 "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
4592 flags[!(temp & LVDS_HSYNC_POLARITY)],
4593 flags[!(temp & LVDS_VSYNC_POLARITY)],
4594 flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
4595 flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
4596 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
4599 I915_WRITE(LVDS, temp);
4603 intel_dp_set_m_n(crtc, mode, adjusted_mode);
4606 I915_WRITE(DPLL(pipe), dpll);
4608 /* Wait for the clocks to stabilize. */
4609 POSTING_READ(DPLL(pipe));
4612 if (INTEL_INFO(dev)->gen >= 4) {
4615 temp = intel_mode_get_pixel_multiplier(adjusted_mode);
4617 temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
4621 I915_WRITE(DPLL_MD(pipe), temp);
4623 /* The pixel multiplier can only be updated once the
4624 * DPLL is enabled and the clocks are stable.
4626 * So write it again.
4628 I915_WRITE(DPLL(pipe), dpll);
4631 intel_crtc->lowfreq_avail = false;
4632 if (is_lvds && has_reduced_clock && i915_powersave) {
4633 I915_WRITE(FP1(pipe), fp2);
4634 intel_crtc->lowfreq_avail = true;
4635 if (HAS_PIPE_CXSR(dev)) {
4636 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
4637 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
4640 I915_WRITE(FP1(pipe), fp);
4641 if (HAS_PIPE_CXSR(dev)) {
4642 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
4643 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
4647 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
4648 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
4649 /* the chip adds 2 halflines automatically */
4650 adjusted_mode->crtc_vdisplay -= 1;
4651 adjusted_mode->crtc_vtotal -= 1;
4652 adjusted_mode->crtc_vblank_start -= 1;
4653 adjusted_mode->crtc_vblank_end -= 1;
4654 adjusted_mode->crtc_vsync_end -= 1;
4655 adjusted_mode->crtc_vsync_start -= 1;
4657 pipeconf &= ~PIPECONF_INTERLACE_W_FIELD_INDICATION; /* progressive */
4659 I915_WRITE(HTOTAL(pipe),
4660 (adjusted_mode->crtc_hdisplay - 1) |
4661 ((adjusted_mode->crtc_htotal - 1) << 16));
4662 I915_WRITE(HBLANK(pipe),
4663 (adjusted_mode->crtc_hblank_start - 1) |
4664 ((adjusted_mode->crtc_hblank_end - 1) << 16));
4665 I915_WRITE(HSYNC(pipe),
4666 (adjusted_mode->crtc_hsync_start - 1) |
4667 ((adjusted_mode->crtc_hsync_end - 1) << 16));
4669 I915_WRITE(VTOTAL(pipe),
4670 (adjusted_mode->crtc_vdisplay - 1) |
4671 ((adjusted_mode->crtc_vtotal - 1) << 16));
4672 I915_WRITE(VBLANK(pipe),
4673 (adjusted_mode->crtc_vblank_start - 1) |
4674 ((adjusted_mode->crtc_vblank_end - 1) << 16));
4675 I915_WRITE(VSYNC(pipe),
4676 (adjusted_mode->crtc_vsync_start - 1) |
4677 ((adjusted_mode->crtc_vsync_end - 1) << 16));
4679 /* pipesrc and dspsize control the size that is scaled from,
4680 * which should always be the user's requested size.
4682 I915_WRITE(DSPSIZE(plane),
4683 ((mode->vdisplay - 1) << 16) |
4684 (mode->hdisplay - 1));
4685 I915_WRITE(DSPPOS(plane), 0);
4686 I915_WRITE(PIPESRC(pipe),
4687 ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
4689 I915_WRITE(PIPECONF(pipe), pipeconf);
4690 POSTING_READ(PIPECONF(pipe));
4691 intel_enable_pipe(dev_priv, pipe, false);
4693 intel_wait_for_vblank(dev, pipe);
4695 I915_WRITE(DSPCNTR(plane), dspcntr);
4696 POSTING_READ(DSPCNTR(plane));
4697 intel_enable_plane(dev_priv, plane, pipe);
4699 ret = intel_pipe_set_base(crtc, x, y, old_fb);
4701 intel_update_watermarks(dev);
4706 static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
4707 struct drm_display_mode *mode,
4708 struct drm_display_mode *adjusted_mode,
4710 struct drm_framebuffer *old_fb)
4712 struct drm_device *dev = crtc->dev;
4713 struct drm_i915_private *dev_priv = dev->dev_private;
4714 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4715 int pipe = intel_crtc->pipe;
4716 int plane = intel_crtc->plane;
4717 int refclk, num_connectors = 0;
4718 intel_clock_t clock, reduced_clock;
4719 u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
4720 bool ok, has_reduced_clock = false, is_sdvo = false;
4721 bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
4722 struct intel_encoder *has_edp_encoder = NULL;
4723 struct drm_mode_config *mode_config = &dev->mode_config;
4724 struct intel_encoder *encoder;
4725 const intel_limit_t *limit;
4727 struct fdi_m_n m_n = {0};
4730 int target_clock, pixel_multiplier, lane, link_bw, bpp, factor;
4732 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
4733 if (encoder->base.crtc != crtc)
4736 switch (encoder->type) {
4737 case INTEL_OUTPUT_LVDS:
4740 case INTEL_OUTPUT_SDVO:
4741 case INTEL_OUTPUT_HDMI:
4743 if (encoder->needs_tv_clock)
4746 case INTEL_OUTPUT_TVOUT:
4749 case INTEL_OUTPUT_ANALOG:
4752 case INTEL_OUTPUT_DISPLAYPORT:
4755 case INTEL_OUTPUT_EDP:
4756 has_edp_encoder = encoder;
4763 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
4764 refclk = dev_priv->lvds_ssc_freq * 1000;
4765 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
4769 if (!has_edp_encoder ||
4770 intel_encoder_is_pch_edp(&has_edp_encoder->base))
4771 refclk = 120000; /* 120Mhz refclk */
4775 * Returns a set of divisors for the desired target clock with the given
4776 * refclk, or FALSE. The returned values represent the clock equation:
4777 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
4779 limit = intel_limit(crtc, refclk);
4780 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock);
4782 DRM_ERROR("Couldn't find PLL settings for mode!\n");
4786 /* Ensure that the cursor is valid for the new mode before changing... */
4787 intel_crtc_update_cursor(crtc, true);
4789 if (is_lvds && dev_priv->lvds_downclock_avail) {
4790 has_reduced_clock = limit->find_pll(limit, crtc,
4791 dev_priv->lvds_downclock,
4794 if (has_reduced_clock && (clock.p != reduced_clock.p)) {
4796 * If the different P is found, it means that we can't
4797 * switch the display clock by using the FP0/FP1.
4798 * In such case we will disable the LVDS downclock
4801 DRM_DEBUG_KMS("Different P is found for "
4802 "LVDS clock/downclock\n");
4803 has_reduced_clock = 0;
4806 /* SDVO TV has fixed PLL values depend on its clock range,
4807 this mirrors vbios setting. */
4808 if (is_sdvo && is_tv) {
4809 if (adjusted_mode->clock >= 100000
4810 && adjusted_mode->clock < 140500) {
4816 } else if (adjusted_mode->clock >= 140500
4817 && adjusted_mode->clock <= 200000) {
4827 pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
4829 /* CPU eDP doesn't require FDI link, so just set DP M/N
4830 according to current link config */
4831 if (has_edp_encoder &&
4832 !intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
4833 target_clock = mode->clock;
4834 intel_edp_link_config(has_edp_encoder,
4837 /* [e]DP over FDI requires target mode clock
4838 instead of link clock */
4839 if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base))
4840 target_clock = mode->clock;
4842 target_clock = adjusted_mode->clock;
4844 /* FDI is a binary signal running at ~2.7GHz, encoding
4845 * each output octet as 10 bits. The actual frequency
4846 * is stored as a divider into a 100MHz clock, and the
4847 * mode pixel clock is stored in units of 1KHz.
4848 * Hence the bw of each lane in terms of the mode signal
4851 link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
4854 /* determine panel color depth */
4855 temp = I915_READ(PIPECONF(pipe));
4856 temp &= ~PIPE_BPC_MASK;
4858 /* the BPC will be 6 if it is 18-bit LVDS panel */
4859 if ((I915_READ(PCH_LVDS) & LVDS_A3_POWER_MASK) == LVDS_A3_POWER_UP)
4863 } else if (has_edp_encoder) {
4864 switch (dev_priv->edp.bpp/3) {
4880 I915_WRITE(PIPECONF(pipe), temp);
4882 switch (temp & PIPE_BPC_MASK) {
4896 DRM_ERROR("unknown pipe bpc value\n");
4902 * Account for spread spectrum to avoid
4903 * oversubscribing the link. Max center spread
4904 * is 2.5%; use 5% for safety's sake.
4906 u32 bps = target_clock * bpp * 21 / 20;
4907 lane = bps / (link_bw * 8) + 1;
4910 intel_crtc->fdi_lanes = lane;
4912 if (pixel_multiplier > 1)
4913 link_bw *= pixel_multiplier;
4914 ironlake_compute_m_n(bpp, lane, target_clock, link_bw, &m_n);
4916 /* Ironlake: try to setup display ref clock before DPLL
4917 * enabling. This is only under driver's control after
4918 * PCH B stepping, previous chipset stepping should be
4919 * ignoring this setting.
4921 temp = I915_READ(PCH_DREF_CONTROL);
4922 /* Always enable nonspread source */
4923 temp &= ~DREF_NONSPREAD_SOURCE_MASK;
4924 temp |= DREF_NONSPREAD_SOURCE_ENABLE;
4925 temp &= ~DREF_SSC_SOURCE_MASK;
4926 temp |= DREF_SSC_SOURCE_ENABLE;
4927 I915_WRITE(PCH_DREF_CONTROL, temp);
4929 POSTING_READ(PCH_DREF_CONTROL);
4932 if (has_edp_encoder) {
4933 if (intel_panel_use_ssc(dev_priv)) {
4934 temp |= DREF_SSC1_ENABLE;
4935 I915_WRITE(PCH_DREF_CONTROL, temp);
4937 POSTING_READ(PCH_DREF_CONTROL);
4940 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
4942 /* Enable CPU source on CPU attached eDP */
4943 if (!intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
4944 if (intel_panel_use_ssc(dev_priv))
4945 temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
4947 temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
4949 /* Enable SSC on PCH eDP if needed */
4950 if (intel_panel_use_ssc(dev_priv)) {
4951 DRM_ERROR("enabling SSC on PCH\n");
4952 temp |= DREF_SUPERSPREAD_SOURCE_ENABLE;
4955 I915_WRITE(PCH_DREF_CONTROL, temp);
4956 POSTING_READ(PCH_DREF_CONTROL);
4960 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
4961 if (has_reduced_clock)
4962 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
4965 /* Enable autotuning of the PLL clock (if permissible) */
4968 if ((intel_panel_use_ssc(dev_priv) &&
4969 dev_priv->lvds_ssc_freq == 100) ||
4970 (I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP)
4972 } else if (is_sdvo && is_tv)
4975 if (clock.m < factor * clock.n)
4981 dpll |= DPLLB_MODE_LVDS;
4983 dpll |= DPLLB_MODE_DAC_SERIAL;
4985 int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
4986 if (pixel_multiplier > 1) {
4987 dpll |= (pixel_multiplier - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
4989 dpll |= DPLL_DVO_HIGH_SPEED;
4991 if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base))
4992 dpll |= DPLL_DVO_HIGH_SPEED;
4994 /* compute bitmask from p1 value */
4995 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
4997 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
5001 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
5004 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
5007 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
5010 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
5014 if (is_sdvo && is_tv)
5015 dpll |= PLL_REF_INPUT_TVCLKINBC;
5017 /* XXX: just matching BIOS for now */
5018 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
5020 else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
5021 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
5023 dpll |= PLL_REF_INPUT_DREFCLK;
5025 /* setup pipeconf */
5026 pipeconf = I915_READ(PIPECONF(pipe));
5028 /* Set up the display plane register */
5029 dspcntr = DISPPLANE_GAMMA_ENABLE;
5031 DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
5032 drm_mode_debug_printmodeline(mode);
5034 /* PCH eDP needs FDI, but CPU eDP does not */
5035 if (!has_edp_encoder || intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
5036 I915_WRITE(PCH_FP0(pipe), fp);
5037 I915_WRITE(PCH_DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
5039 POSTING_READ(PCH_DPLL(pipe));
5043 /* enable transcoder DPLL */
5044 if (HAS_PCH_CPT(dev)) {
5045 temp = I915_READ(PCH_DPLL_SEL);
5048 temp |= TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL;
5051 temp |= TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL;
5054 /* FIXME: manage transcoder PLLs? */
5055 temp |= TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL;
5060 I915_WRITE(PCH_DPLL_SEL, temp);
5062 POSTING_READ(PCH_DPLL_SEL);
5066 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
5067 * This is an exception to the general rule that mode_set doesn't turn
5071 temp = I915_READ(PCH_LVDS);
5072 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
5074 if (HAS_PCH_CPT(dev))
5075 temp |= PORT_TRANS_B_SEL_CPT;
5077 temp |= LVDS_PIPEB_SELECT;
5079 if (HAS_PCH_CPT(dev))
5080 temp &= ~PORT_TRANS_SEL_MASK;
5082 temp &= ~LVDS_PIPEB_SELECT;
5084 /* set the corresponsding LVDS_BORDER bit */
5085 temp |= dev_priv->lvds_border_bits;
5086 /* Set the B0-B3 data pairs corresponding to whether we're going to
5087 * set the DPLLs for dual-channel mode or not.
5090 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
5092 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
5094 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
5095 * appropriately here, but we need to look more thoroughly into how
5096 * panels behave in the two modes.
5098 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
5099 lvds_sync |= LVDS_HSYNC_POLARITY;
5100 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
5101 lvds_sync |= LVDS_VSYNC_POLARITY;
5102 if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
5104 char flags[2] = "-+";
5105 DRM_INFO("Changing LVDS panel from "
5106 "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
5107 flags[!(temp & LVDS_HSYNC_POLARITY)],
5108 flags[!(temp & LVDS_VSYNC_POLARITY)],
5109 flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
5110 flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
5111 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
5114 I915_WRITE(PCH_LVDS, temp);
5117 /* set the dithering flag and clear for anything other than a panel. */
5118 pipeconf &= ~PIPECONF_DITHER_EN;
5119 pipeconf &= ~PIPECONF_DITHER_TYPE_MASK;
5120 if (dev_priv->lvds_dither && (is_lvds || has_edp_encoder)) {
5121 pipeconf |= PIPECONF_DITHER_EN;
5122 pipeconf |= PIPECONF_DITHER_TYPE_ST1;
5125 if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
5126 intel_dp_set_m_n(crtc, mode, adjusted_mode);
5128 /* For non-DP output, clear any trans DP clock recovery setting.*/
5129 I915_WRITE(TRANSDATA_M1(pipe), 0);
5130 I915_WRITE(TRANSDATA_N1(pipe), 0);
5131 I915_WRITE(TRANSDPLINK_M1(pipe), 0);
5132 I915_WRITE(TRANSDPLINK_N1(pipe), 0);
5135 if (!has_edp_encoder ||
5136 intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
5137 I915_WRITE(PCH_DPLL(pipe), dpll);
5139 /* Wait for the clocks to stabilize. */
5140 POSTING_READ(PCH_DPLL(pipe));
5143 /* The pixel multiplier can only be updated once the
5144 * DPLL is enabled and the clocks are stable.
5146 * So write it again.
5148 I915_WRITE(PCH_DPLL(pipe), dpll);
5151 intel_crtc->lowfreq_avail = false;
5152 if (is_lvds && has_reduced_clock && i915_powersave) {
5153 I915_WRITE(PCH_FP1(pipe), fp2);
5154 intel_crtc->lowfreq_avail = true;
5155 if (HAS_PIPE_CXSR(dev)) {
5156 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
5157 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
5160 I915_WRITE(PCH_FP1(pipe), fp);
5161 if (HAS_PIPE_CXSR(dev)) {
5162 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
5163 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
5167 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
5168 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
5169 /* the chip adds 2 halflines automatically */
5170 adjusted_mode->crtc_vdisplay -= 1;
5171 adjusted_mode->crtc_vtotal -= 1;
5172 adjusted_mode->crtc_vblank_start -= 1;
5173 adjusted_mode->crtc_vblank_end -= 1;
5174 adjusted_mode->crtc_vsync_end -= 1;
5175 adjusted_mode->crtc_vsync_start -= 1;
5177 pipeconf &= ~PIPECONF_INTERLACE_W_FIELD_INDICATION; /* progressive */
5179 I915_WRITE(HTOTAL(pipe),
5180 (adjusted_mode->crtc_hdisplay - 1) |
5181 ((adjusted_mode->crtc_htotal - 1) << 16));
5182 I915_WRITE(HBLANK(pipe),
5183 (adjusted_mode->crtc_hblank_start - 1) |
5184 ((adjusted_mode->crtc_hblank_end - 1) << 16));
5185 I915_WRITE(HSYNC(pipe),
5186 (adjusted_mode->crtc_hsync_start - 1) |
5187 ((adjusted_mode->crtc_hsync_end - 1) << 16));
5189 I915_WRITE(VTOTAL(pipe),
5190 (adjusted_mode->crtc_vdisplay - 1) |
5191 ((adjusted_mode->crtc_vtotal - 1) << 16));
5192 I915_WRITE(VBLANK(pipe),
5193 (adjusted_mode->crtc_vblank_start - 1) |
5194 ((adjusted_mode->crtc_vblank_end - 1) << 16));
5195 I915_WRITE(VSYNC(pipe),
5196 (adjusted_mode->crtc_vsync_start - 1) |
5197 ((adjusted_mode->crtc_vsync_end - 1) << 16));
5199 /* pipesrc controls the size that is scaled from, which should
5200 * always be the user's requested size.
5202 I915_WRITE(PIPESRC(pipe),
5203 ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
5205 I915_WRITE(PIPE_DATA_M1(pipe), TU_SIZE(m_n.tu) | m_n.gmch_m);
5206 I915_WRITE(PIPE_DATA_N1(pipe), m_n.gmch_n);
5207 I915_WRITE(PIPE_LINK_M1(pipe), m_n.link_m);
5208 I915_WRITE(PIPE_LINK_N1(pipe), m_n.link_n);
5210 if (has_edp_encoder &&
5211 !intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
5212 ironlake_set_pll_edp(crtc, adjusted_mode->clock);
5215 I915_WRITE(PIPECONF(pipe), pipeconf);
5216 POSTING_READ(PIPECONF(pipe));
5218 intel_wait_for_vblank(dev, pipe);
5221 /* enable address swizzle for tiling buffer */
5222 temp = I915_READ(DISP_ARB_CTL);
5223 I915_WRITE(DISP_ARB_CTL, temp | DISP_TILE_SURFACE_SWIZZLING);
5226 I915_WRITE(DSPCNTR(plane), dspcntr);
5227 POSTING_READ(DSPCNTR(plane));
5229 ret = intel_pipe_set_base(crtc, x, y, old_fb);
5231 intel_update_watermarks(dev);
5236 static int intel_crtc_mode_set(struct drm_crtc *crtc,
5237 struct drm_display_mode *mode,
5238 struct drm_display_mode *adjusted_mode,
5240 struct drm_framebuffer *old_fb)
5242 struct drm_device *dev = crtc->dev;
5243 struct drm_i915_private *dev_priv = dev->dev_private;
5244 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5245 int pipe = intel_crtc->pipe;
5248 drm_vblank_pre_modeset(dev, pipe);
5250 ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode,
5253 drm_vblank_post_modeset(dev, pipe);
5258 /** Loads the palette/gamma unit for the CRTC with the prepared values */
5259 void intel_crtc_load_lut(struct drm_crtc *crtc)
5261 struct drm_device *dev = crtc->dev;
5262 struct drm_i915_private *dev_priv = dev->dev_private;
5263 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5264 int palreg = PALETTE(intel_crtc->pipe);
5267 /* The clocks have to be on to load the palette. */
5268 if (!crtc->enabled || !intel_crtc->active)
5271 /* use legacy palette for Ironlake */
5272 if (HAS_PCH_SPLIT(dev))
5273 palreg = LGC_PALETTE(intel_crtc->pipe);
5275 for (i = 0; i < 256; i++) {
5276 I915_WRITE(palreg + 4 * i,
5277 (intel_crtc->lut_r[i] << 16) |
5278 (intel_crtc->lut_g[i] << 8) |
5279 intel_crtc->lut_b[i]);
5283 static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
5285 struct drm_device *dev = crtc->dev;
5286 struct drm_i915_private *dev_priv = dev->dev_private;
5287 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5288 bool visible = base != 0;
5291 if (intel_crtc->cursor_visible == visible)
5294 cntl = I915_READ(_CURACNTR);
5296 /* On these chipsets we can only modify the base whilst
5297 * the cursor is disabled.
5299 I915_WRITE(_CURABASE, base);
5301 cntl &= ~(CURSOR_FORMAT_MASK);
5302 /* XXX width must be 64, stride 256 => 0x00 << 28 */
5303 cntl |= CURSOR_ENABLE |
5304 CURSOR_GAMMA_ENABLE |
5307 cntl &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
5308 I915_WRITE(_CURACNTR, cntl);
5310 intel_crtc->cursor_visible = visible;
5313 static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
5315 struct drm_device *dev = crtc->dev;
5316 struct drm_i915_private *dev_priv = dev->dev_private;
5317 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5318 int pipe = intel_crtc->pipe;
5319 bool visible = base != 0;
5321 if (intel_crtc->cursor_visible != visible) {
5322 uint32_t cntl = I915_READ(CURCNTR(pipe));
5324 cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
5325 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
5326 cntl |= pipe << 28; /* Connect to correct pipe */
5328 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
5329 cntl |= CURSOR_MODE_DISABLE;
5331 I915_WRITE(CURCNTR(pipe), cntl);
5333 intel_crtc->cursor_visible = visible;
5335 /* and commit changes on next vblank */
5336 I915_WRITE(CURBASE(pipe), base);
5339 static void ivb_update_cursor(struct drm_crtc *crtc, u32 base)
5341 struct drm_device *dev = crtc->dev;
5342 struct drm_i915_private *dev_priv = dev->dev_private;
5343 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5344 int pipe = intel_crtc->pipe;
5345 bool visible = base != 0;
5347 if (intel_crtc->cursor_visible != visible) {
5348 uint32_t cntl = I915_READ(CURCNTR_IVB(pipe));
5350 cntl &= ~CURSOR_MODE;
5351 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
5353 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
5354 cntl |= CURSOR_MODE_DISABLE;
5356 I915_WRITE(CURCNTR_IVB(pipe), cntl);
5358 intel_crtc->cursor_visible = visible;
5360 /* and commit changes on next vblank */
5361 I915_WRITE(CURBASE_IVB(pipe), base);
5364 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
5365 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
5368 struct drm_device *dev = crtc->dev;
5369 struct drm_i915_private *dev_priv = dev->dev_private;
5370 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5371 int pipe = intel_crtc->pipe;
5372 int x = intel_crtc->cursor_x;
5373 int y = intel_crtc->cursor_y;
5379 if (on && crtc->enabled && crtc->fb) {
5380 base = intel_crtc->cursor_addr;
5381 if (x > (int) crtc->fb->width)
5384 if (y > (int) crtc->fb->height)
5390 if (x + intel_crtc->cursor_width < 0)
5393 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
5396 pos |= x << CURSOR_X_SHIFT;
5399 if (y + intel_crtc->cursor_height < 0)
5402 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
5405 pos |= y << CURSOR_Y_SHIFT;
5407 visible = base != 0;
5408 if (!visible && !intel_crtc->cursor_visible)
5411 if (IS_IVYBRIDGE(dev)) {
5412 I915_WRITE(CURPOS_IVB(pipe), pos);
5413 ivb_update_cursor(crtc, base);
5415 I915_WRITE(CURPOS(pipe), pos);
5416 if (IS_845G(dev) || IS_I865G(dev))
5417 i845_update_cursor(crtc, base);
5419 i9xx_update_cursor(crtc, base);
5423 intel_mark_busy(dev, to_intel_framebuffer(crtc->fb)->obj);
5426 static int intel_crtc_cursor_set(struct drm_crtc *crtc,
5427 struct drm_file *file,
5429 uint32_t width, uint32_t height)
5431 struct drm_device *dev = crtc->dev;
5432 struct drm_i915_private *dev_priv = dev->dev_private;
5433 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5434 struct drm_i915_gem_object *obj;
5438 DRM_DEBUG_KMS("\n");
5440 /* if we want to turn off the cursor ignore width and height */
5442 DRM_DEBUG_KMS("cursor off\n");
5445 mutex_lock(&dev->struct_mutex);
5449 /* Currently we only support 64x64 cursors */
5450 if (width != 64 || height != 64) {
5451 DRM_ERROR("we currently only support 64x64 cursors\n");
5455 obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
5456 if (&obj->base == NULL)
5459 if (obj->base.size < width * height * 4) {
5460 DRM_ERROR("buffer is to small\n");
5465 /* we only need to pin inside GTT if cursor is non-phy */
5466 mutex_lock(&dev->struct_mutex);
5467 if (!dev_priv->info->cursor_needs_physical) {
5468 if (obj->tiling_mode) {
5469 DRM_ERROR("cursor cannot be tiled\n");
5474 ret = i915_gem_object_pin(obj, PAGE_SIZE, true);
5476 DRM_ERROR("failed to pin cursor bo\n");
5480 ret = i915_gem_object_set_to_gtt_domain(obj, 0);
5482 DRM_ERROR("failed to move cursor bo into the GTT\n");
5486 ret = i915_gem_object_put_fence(obj);
5488 DRM_ERROR("failed to move cursor bo into the GTT\n");
5492 addr = obj->gtt_offset;
5494 int align = IS_I830(dev) ? 16 * 1024 : 256;
5495 ret = i915_gem_attach_phys_object(dev, obj,
5496 (intel_crtc->pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1,
5499 DRM_ERROR("failed to attach phys object\n");
5502 addr = obj->phys_obj->handle->busaddr;
5506 I915_WRITE(CURSIZE, (height << 12) | width);
5509 if (intel_crtc->cursor_bo) {
5510 if (dev_priv->info->cursor_needs_physical) {
5511 if (intel_crtc->cursor_bo != obj)
5512 i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
5514 i915_gem_object_unpin(intel_crtc->cursor_bo);
5515 drm_gem_object_unreference(&intel_crtc->cursor_bo->base);
5518 mutex_unlock(&dev->struct_mutex);
5520 intel_crtc->cursor_addr = addr;
5521 intel_crtc->cursor_bo = obj;
5522 intel_crtc->cursor_width = width;
5523 intel_crtc->cursor_height = height;
5525 intel_crtc_update_cursor(crtc, true);
5529 i915_gem_object_unpin(obj);
5531 mutex_unlock(&dev->struct_mutex);
5533 drm_gem_object_unreference_unlocked(&obj->base);
5537 static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
5539 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5541 intel_crtc->cursor_x = x;
5542 intel_crtc->cursor_y = y;
5544 intel_crtc_update_cursor(crtc, true);
5549 /** Sets the color ramps on behalf of RandR */
5550 void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
5551 u16 blue, int regno)
5553 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5555 intel_crtc->lut_r[regno] = red >> 8;
5556 intel_crtc->lut_g[regno] = green >> 8;
5557 intel_crtc->lut_b[regno] = blue >> 8;
5560 void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
5561 u16 *blue, int regno)
5563 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5565 *red = intel_crtc->lut_r[regno] << 8;
5566 *green = intel_crtc->lut_g[regno] << 8;
5567 *blue = intel_crtc->lut_b[regno] << 8;
5570 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
5571 u16 *blue, uint32_t start, uint32_t size)
5573 int end = (start + size > 256) ? 256 : start + size, i;
5574 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5576 for (i = start; i < end; i++) {
5577 intel_crtc->lut_r[i] = red[i] >> 8;
5578 intel_crtc->lut_g[i] = green[i] >> 8;
5579 intel_crtc->lut_b[i] = blue[i] >> 8;
5582 intel_crtc_load_lut(crtc);
5586 * Get a pipe with a simple mode set on it for doing load-based monitor
5589 * It will be up to the load-detect code to adjust the pipe as appropriate for
5590 * its requirements. The pipe will be connected to no other encoders.
5592 * Currently this code will only succeed if there is a pipe with no encoders
5593 * configured for it. In the future, it could choose to temporarily disable
5594 * some outputs to free up a pipe for its use.
5596 * \return crtc, or NULL if no pipes are available.
5599 /* VESA 640x480x72Hz mode to set on the pipe */
5600 static struct drm_display_mode load_detect_mode = {
5601 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
5602 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
5605 static struct drm_framebuffer *
5606 intel_framebuffer_create(struct drm_device *dev,
5607 struct drm_mode_fb_cmd *mode_cmd,
5608 struct drm_i915_gem_object *obj)
5610 struct intel_framebuffer *intel_fb;
5613 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
5615 drm_gem_object_unreference_unlocked(&obj->base);
5616 return ERR_PTR(-ENOMEM);
5619 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
5621 drm_gem_object_unreference_unlocked(&obj->base);
5623 return ERR_PTR(ret);
5626 return &intel_fb->base;
5630 intel_framebuffer_pitch_for_width(int width, int bpp)
5632 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
5633 return ALIGN(pitch, 64);
5637 intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
5639 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
5640 return ALIGN(pitch * mode->vdisplay, PAGE_SIZE);
5643 static struct drm_framebuffer *
5644 intel_framebuffer_create_for_mode(struct drm_device *dev,
5645 struct drm_display_mode *mode,
5648 struct drm_i915_gem_object *obj;
5649 struct drm_mode_fb_cmd mode_cmd;
5651 obj = i915_gem_alloc_object(dev,
5652 intel_framebuffer_size_for_mode(mode, bpp));
5654 return ERR_PTR(-ENOMEM);
5656 mode_cmd.width = mode->hdisplay;
5657 mode_cmd.height = mode->vdisplay;
5658 mode_cmd.depth = depth;
5660 mode_cmd.pitch = intel_framebuffer_pitch_for_width(mode_cmd.width, bpp);
5662 return intel_framebuffer_create(dev, &mode_cmd, obj);
5665 static struct drm_framebuffer *
5666 mode_fits_in_fbdev(struct drm_device *dev,
5667 struct drm_display_mode *mode)
5669 struct drm_i915_private *dev_priv = dev->dev_private;
5670 struct drm_i915_gem_object *obj;
5671 struct drm_framebuffer *fb;
5673 if (dev_priv->fbdev == NULL)
5676 obj = dev_priv->fbdev->ifb.obj;
5680 fb = &dev_priv->fbdev->ifb.base;
5681 if (fb->pitch < intel_framebuffer_pitch_for_width(mode->hdisplay,
5682 fb->bits_per_pixel))
5685 if (obj->base.size < mode->vdisplay * fb->pitch)
5691 bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
5692 struct drm_connector *connector,
5693 struct drm_display_mode *mode,
5694 struct intel_load_detect_pipe *old)
5696 struct intel_crtc *intel_crtc;
5697 struct drm_crtc *possible_crtc;
5698 struct drm_encoder *encoder = &intel_encoder->base;
5699 struct drm_crtc *crtc = NULL;
5700 struct drm_device *dev = encoder->dev;
5701 struct drm_framebuffer *old_fb;
5704 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
5705 connector->base.id, drm_get_connector_name(connector),
5706 encoder->base.id, drm_get_encoder_name(encoder));
5709 * Algorithm gets a little messy:
5711 * - if the connector already has an assigned crtc, use it (but make
5712 * sure it's on first)
5714 * - try to find the first unused crtc that can drive this connector,
5715 * and use that if we find one
5718 /* See if we already have a CRTC for this connector */
5719 if (encoder->crtc) {
5720 crtc = encoder->crtc;
5722 intel_crtc = to_intel_crtc(crtc);
5723 old->dpms_mode = intel_crtc->dpms_mode;
5724 old->load_detect_temp = false;
5726 /* Make sure the crtc and connector are running */
5727 if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
5728 struct drm_encoder_helper_funcs *encoder_funcs;
5729 struct drm_crtc_helper_funcs *crtc_funcs;
5731 crtc_funcs = crtc->helper_private;
5732 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
5734 encoder_funcs = encoder->helper_private;
5735 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
5741 /* Find an unused one (if possible) */
5742 list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
5744 if (!(encoder->possible_crtcs & (1 << i)))
5746 if (!possible_crtc->enabled) {
5747 crtc = possible_crtc;
5753 * If we didn't find an unused CRTC, don't use any.
5756 DRM_DEBUG_KMS("no pipe available for load-detect\n");
5760 encoder->crtc = crtc;
5761 connector->encoder = encoder;
5763 intel_crtc = to_intel_crtc(crtc);
5764 old->dpms_mode = intel_crtc->dpms_mode;
5765 old->load_detect_temp = true;
5766 old->release_fb = NULL;
5769 mode = &load_detect_mode;
5773 /* We need a framebuffer large enough to accommodate all accesses
5774 * that the plane may generate whilst we perform load detection.
5775 * We can not rely on the fbcon either being present (we get called
5776 * during its initialisation to detect all boot displays, or it may
5777 * not even exist) or that it is large enough to satisfy the
5780 crtc->fb = mode_fits_in_fbdev(dev, mode);
5781 if (crtc->fb == NULL) {
5782 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
5783 crtc->fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
5784 old->release_fb = crtc->fb;
5786 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
5787 if (IS_ERR(crtc->fb)) {
5788 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
5793 if (!drm_crtc_helper_set_mode(crtc, mode, 0, 0, old_fb)) {
5794 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
5795 if (old->release_fb)
5796 old->release_fb->funcs->destroy(old->release_fb);
5801 /* let the connector get through one full cycle before testing */
5802 intel_wait_for_vblank(dev, intel_crtc->pipe);
5807 void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
5808 struct drm_connector *connector,
5809 struct intel_load_detect_pipe *old)
5811 struct drm_encoder *encoder = &intel_encoder->base;
5812 struct drm_device *dev = encoder->dev;
5813 struct drm_crtc *crtc = encoder->crtc;
5814 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
5815 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
5817 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
5818 connector->base.id, drm_get_connector_name(connector),
5819 encoder->base.id, drm_get_encoder_name(encoder));
5821 if (old->load_detect_temp) {
5822 connector->encoder = NULL;
5823 drm_helper_disable_unused_functions(dev);
5825 if (old->release_fb)
5826 old->release_fb->funcs->destroy(old->release_fb);
5831 /* Switch crtc and encoder back off if necessary */
5832 if (old->dpms_mode != DRM_MODE_DPMS_ON) {
5833 encoder_funcs->dpms(encoder, old->dpms_mode);
5834 crtc_funcs->dpms(crtc, old->dpms_mode);
5838 /* Returns the clock of the currently programmed mode of the given pipe. */
5839 static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
5841 struct drm_i915_private *dev_priv = dev->dev_private;
5842 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5843 int pipe = intel_crtc->pipe;
5844 u32 dpll = I915_READ(DPLL(pipe));
5846 intel_clock_t clock;
5848 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
5849 fp = I915_READ(FP0(pipe));
5851 fp = I915_READ(FP1(pipe));
5853 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
5854 if (IS_PINEVIEW(dev)) {
5855 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
5856 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
5858 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
5859 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
5862 if (!IS_GEN2(dev)) {
5863 if (IS_PINEVIEW(dev))
5864 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
5865 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
5867 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
5868 DPLL_FPA01_P1_POST_DIV_SHIFT);
5870 switch (dpll & DPLL_MODE_MASK) {
5871 case DPLLB_MODE_DAC_SERIAL:
5872 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
5875 case DPLLB_MODE_LVDS:
5876 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
5880 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
5881 "mode\n", (int)(dpll & DPLL_MODE_MASK));
5885 /* XXX: Handle the 100Mhz refclk */
5886 intel_clock(dev, 96000, &clock);
5888 bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
5891 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
5892 DPLL_FPA01_P1_POST_DIV_SHIFT);
5895 if ((dpll & PLL_REF_INPUT_MASK) ==
5896 PLLB_REF_INPUT_SPREADSPECTRUMIN) {
5897 /* XXX: might not be 66MHz */
5898 intel_clock(dev, 66000, &clock);
5900 intel_clock(dev, 48000, &clock);
5902 if (dpll & PLL_P1_DIVIDE_BY_TWO)
5905 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
5906 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
5908 if (dpll & PLL_P2_DIVIDE_BY_4)
5913 intel_clock(dev, 48000, &clock);
5917 /* XXX: It would be nice to validate the clocks, but we can't reuse
5918 * i830PllIsValid() because it relies on the xf86_config connector
5919 * configuration being accurate, which it isn't necessarily.
5925 /** Returns the currently programmed mode of the given pipe. */
5926 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
5927 struct drm_crtc *crtc)
5929 struct drm_i915_private *dev_priv = dev->dev_private;
5930 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5931 int pipe = intel_crtc->pipe;
5932 struct drm_display_mode *mode;
5933 int htot = I915_READ(HTOTAL(pipe));
5934 int hsync = I915_READ(HSYNC(pipe));
5935 int vtot = I915_READ(VTOTAL(pipe));
5936 int vsync = I915_READ(VSYNC(pipe));
5938 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
5942 mode->clock = intel_crtc_clock_get(dev, crtc);
5943 mode->hdisplay = (htot & 0xffff) + 1;
5944 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
5945 mode->hsync_start = (hsync & 0xffff) + 1;
5946 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
5947 mode->vdisplay = (vtot & 0xffff) + 1;
5948 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
5949 mode->vsync_start = (vsync & 0xffff) + 1;
5950 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
5952 drm_mode_set_name(mode);
5953 drm_mode_set_crtcinfo(mode, 0);
5958 #define GPU_IDLE_TIMEOUT 500 /* ms */
5960 /* When this timer fires, we've been idle for awhile */
5961 static void intel_gpu_idle_timer(unsigned long arg)
5963 struct drm_device *dev = (struct drm_device *)arg;
5964 drm_i915_private_t *dev_priv = dev->dev_private;
5966 if (!list_empty(&dev_priv->mm.active_list)) {
5967 /* Still processing requests, so just re-arm the timer. */
5968 mod_timer(&dev_priv->idle_timer, jiffies +
5969 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
5973 dev_priv->busy = false;
5974 queue_work(dev_priv->wq, &dev_priv->idle_work);
5977 #define CRTC_IDLE_TIMEOUT 1000 /* ms */
5979 static void intel_crtc_idle_timer(unsigned long arg)
5981 struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
5982 struct drm_crtc *crtc = &intel_crtc->base;
5983 drm_i915_private_t *dev_priv = crtc->dev->dev_private;
5984 struct intel_framebuffer *intel_fb;
5986 intel_fb = to_intel_framebuffer(crtc->fb);
5987 if (intel_fb && intel_fb->obj->active) {
5988 /* The framebuffer is still being accessed by the GPU. */
5989 mod_timer(&intel_crtc->idle_timer, jiffies +
5990 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
5994 intel_crtc->busy = false;
5995 queue_work(dev_priv->wq, &dev_priv->idle_work);
5998 static void intel_increase_pllclock(struct drm_crtc *crtc)
6000 struct drm_device *dev = crtc->dev;
6001 drm_i915_private_t *dev_priv = dev->dev_private;
6002 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6003 int pipe = intel_crtc->pipe;
6004 int dpll_reg = DPLL(pipe);
6007 if (HAS_PCH_SPLIT(dev))
6010 if (!dev_priv->lvds_downclock_avail)
6013 dpll = I915_READ(dpll_reg);
6014 if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
6015 DRM_DEBUG_DRIVER("upclocking LVDS\n");
6017 /* Unlock panel regs */
6018 I915_WRITE(PP_CONTROL,
6019 I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS);
6021 dpll &= ~DISPLAY_RATE_SELECT_FPA1;
6022 I915_WRITE(dpll_reg, dpll);
6023 intel_wait_for_vblank(dev, pipe);
6025 dpll = I915_READ(dpll_reg);
6026 if (dpll & DISPLAY_RATE_SELECT_FPA1)
6027 DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
6029 /* ...and lock them again */
6030 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
6033 /* Schedule downclock */
6034 mod_timer(&intel_crtc->idle_timer, jiffies +
6035 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
6038 static void intel_decrease_pllclock(struct drm_crtc *crtc)
6040 struct drm_device *dev = crtc->dev;
6041 drm_i915_private_t *dev_priv = dev->dev_private;
6042 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6043 int pipe = intel_crtc->pipe;
6044 int dpll_reg = DPLL(pipe);
6045 int dpll = I915_READ(dpll_reg);
6047 if (HAS_PCH_SPLIT(dev))
6050 if (!dev_priv->lvds_downclock_avail)
6054 * Since this is called by a timer, we should never get here in
6057 if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
6058 DRM_DEBUG_DRIVER("downclocking LVDS\n");
6060 /* Unlock panel regs */
6061 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) |
6064 dpll |= DISPLAY_RATE_SELECT_FPA1;
6065 I915_WRITE(dpll_reg, dpll);
6066 intel_wait_for_vblank(dev, pipe);
6067 dpll = I915_READ(dpll_reg);
6068 if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
6069 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
6071 /* ...and lock them again */
6072 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
6078 * intel_idle_update - adjust clocks for idleness
6079 * @work: work struct
6081 * Either the GPU or display (or both) went idle. Check the busy status
6082 * here and adjust the CRTC and GPU clocks as necessary.
6084 static void intel_idle_update(struct work_struct *work)
6086 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
6088 struct drm_device *dev = dev_priv->dev;
6089 struct drm_crtc *crtc;
6090 struct intel_crtc *intel_crtc;
6092 if (!i915_powersave)
6095 mutex_lock(&dev->struct_mutex);
6097 i915_update_gfx_val(dev_priv);
6099 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
6100 /* Skip inactive CRTCs */
6104 intel_crtc = to_intel_crtc(crtc);
6105 if (!intel_crtc->busy)
6106 intel_decrease_pllclock(crtc);
6110 mutex_unlock(&dev->struct_mutex);
6114 * intel_mark_busy - mark the GPU and possibly the display busy
6116 * @obj: object we're operating on
6118 * Callers can use this function to indicate that the GPU is busy processing
6119 * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
6120 * buffer), we'll also mark the display as busy, so we know to increase its
6123 void intel_mark_busy(struct drm_device *dev, struct drm_i915_gem_object *obj)
6125 drm_i915_private_t *dev_priv = dev->dev_private;
6126 struct drm_crtc *crtc = NULL;
6127 struct intel_framebuffer *intel_fb;
6128 struct intel_crtc *intel_crtc;
6130 if (!drm_core_check_feature(dev, DRIVER_MODESET))
6133 if (!dev_priv->busy)
6134 dev_priv->busy = true;
6136 mod_timer(&dev_priv->idle_timer, jiffies +
6137 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
6139 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
6143 intel_crtc = to_intel_crtc(crtc);
6144 intel_fb = to_intel_framebuffer(crtc->fb);
6145 if (intel_fb->obj == obj) {
6146 if (!intel_crtc->busy) {
6147 /* Non-busy -> busy, upclock */
6148 intel_increase_pllclock(crtc);
6149 intel_crtc->busy = true;
6151 /* Busy -> busy, put off timer */
6152 mod_timer(&intel_crtc->idle_timer, jiffies +
6153 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
6159 static void intel_crtc_destroy(struct drm_crtc *crtc)
6161 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6162 struct drm_device *dev = crtc->dev;
6163 struct intel_unpin_work *work;
6164 unsigned long flags;
6166 spin_lock_irqsave(&dev->event_lock, flags);
6167 work = intel_crtc->unpin_work;
6168 intel_crtc->unpin_work = NULL;
6169 spin_unlock_irqrestore(&dev->event_lock, flags);
6172 cancel_work_sync(&work->work);
6176 drm_crtc_cleanup(crtc);
6181 static void intel_unpin_work_fn(struct work_struct *__work)
6183 struct intel_unpin_work *work =
6184 container_of(__work, struct intel_unpin_work, work);
6186 mutex_lock(&work->dev->struct_mutex);
6187 i915_gem_object_unpin(work->old_fb_obj);
6188 drm_gem_object_unreference(&work->pending_flip_obj->base);
6189 drm_gem_object_unreference(&work->old_fb_obj->base);
6191 mutex_unlock(&work->dev->struct_mutex);
6195 static void do_intel_finish_page_flip(struct drm_device *dev,
6196 struct drm_crtc *crtc)
6198 drm_i915_private_t *dev_priv = dev->dev_private;
6199 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6200 struct intel_unpin_work *work;
6201 struct drm_i915_gem_object *obj;
6202 struct drm_pending_vblank_event *e;
6203 struct timeval tnow, tvbl;
6204 unsigned long flags;
6206 /* Ignore early vblank irqs */
6207 if (intel_crtc == NULL)
6210 do_gettimeofday(&tnow);
6212 spin_lock_irqsave(&dev->event_lock, flags);
6213 work = intel_crtc->unpin_work;
6214 if (work == NULL || !work->pending) {
6215 spin_unlock_irqrestore(&dev->event_lock, flags);
6219 intel_crtc->unpin_work = NULL;
6223 e->event.sequence = drm_vblank_count_and_time(dev, intel_crtc->pipe, &tvbl);
6225 /* Called before vblank count and timestamps have
6226 * been updated for the vblank interval of flip
6227 * completion? Need to increment vblank count and
6228 * add one videorefresh duration to returned timestamp
6229 * to account for this. We assume this happened if we
6230 * get called over 0.9 frame durations after the last
6231 * timestamped vblank.
6233 * This calculation can not be used with vrefresh rates
6234 * below 5Hz (10Hz to be on the safe side) without
6235 * promoting to 64 integers.
6237 if (10 * (timeval_to_ns(&tnow) - timeval_to_ns(&tvbl)) >
6238 9 * crtc->framedur_ns) {
6239 e->event.sequence++;
6240 tvbl = ns_to_timeval(timeval_to_ns(&tvbl) +
6244 e->event.tv_sec = tvbl.tv_sec;
6245 e->event.tv_usec = tvbl.tv_usec;
6247 list_add_tail(&e->base.link,
6248 &e->base.file_priv->event_list);
6249 wake_up_interruptible(&e->base.file_priv->event_wait);
6252 drm_vblank_put(dev, intel_crtc->pipe);
6254 spin_unlock_irqrestore(&dev->event_lock, flags);
6256 obj = work->old_fb_obj;
6258 atomic_clear_mask(1 << intel_crtc->plane,
6259 &obj->pending_flip.counter);
6260 if (atomic_read(&obj->pending_flip) == 0)
6261 wake_up(&dev_priv->pending_flip_queue);
6263 schedule_work(&work->work);
6265 trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
6268 void intel_finish_page_flip(struct drm_device *dev, int pipe)
6270 drm_i915_private_t *dev_priv = dev->dev_private;
6271 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
6273 do_intel_finish_page_flip(dev, crtc);
6276 void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
6278 drm_i915_private_t *dev_priv = dev->dev_private;
6279 struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
6281 do_intel_finish_page_flip(dev, crtc);
6284 void intel_prepare_page_flip(struct drm_device *dev, int plane)
6286 drm_i915_private_t *dev_priv = dev->dev_private;
6287 struct intel_crtc *intel_crtc =
6288 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
6289 unsigned long flags;
6291 spin_lock_irqsave(&dev->event_lock, flags);
6292 if (intel_crtc->unpin_work) {
6293 if ((++intel_crtc->unpin_work->pending) > 1)
6294 DRM_ERROR("Prepared flip multiple times\n");
6296 DRM_DEBUG_DRIVER("preparing flip with no unpin work?\n");
6298 spin_unlock_irqrestore(&dev->event_lock, flags);
6301 static int intel_gen2_queue_flip(struct drm_device *dev,
6302 struct drm_crtc *crtc,
6303 struct drm_framebuffer *fb,
6304 struct drm_i915_gem_object *obj)
6306 struct drm_i915_private *dev_priv = dev->dev_private;
6307 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6308 unsigned long offset;
6312 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
6316 /* Offset into the new buffer for cases of shared fbs between CRTCs */
6317 offset = crtc->y * fb->pitch + crtc->x * fb->bits_per_pixel/8;
6319 ret = BEGIN_LP_RING(6);
6323 /* Can't queue multiple flips, so wait for the previous
6324 * one to finish before executing the next.
6326 if (intel_crtc->plane)
6327 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
6329 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
6330 OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
6332 OUT_RING(MI_DISPLAY_FLIP |
6333 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
6334 OUT_RING(fb->pitch);
6335 OUT_RING(obj->gtt_offset + offset);
6342 static int intel_gen3_queue_flip(struct drm_device *dev,
6343 struct drm_crtc *crtc,
6344 struct drm_framebuffer *fb,
6345 struct drm_i915_gem_object *obj)
6347 struct drm_i915_private *dev_priv = dev->dev_private;
6348 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6349 unsigned long offset;
6353 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
6357 /* Offset into the new buffer for cases of shared fbs between CRTCs */
6358 offset = crtc->y * fb->pitch + crtc->x * fb->bits_per_pixel/8;
6360 ret = BEGIN_LP_RING(6);
6364 if (intel_crtc->plane)
6365 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
6367 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
6368 OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
6370 OUT_RING(MI_DISPLAY_FLIP_I915 |
6371 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
6372 OUT_RING(fb->pitch);
6373 OUT_RING(obj->gtt_offset + offset);
6381 static int intel_gen4_queue_flip(struct drm_device *dev,
6382 struct drm_crtc *crtc,
6383 struct drm_framebuffer *fb,
6384 struct drm_i915_gem_object *obj)
6386 struct drm_i915_private *dev_priv = dev->dev_private;
6387 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6388 uint32_t pf, pipesrc;
6391 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
6395 ret = BEGIN_LP_RING(4);
6399 /* i965+ uses the linear or tiled offsets from the
6400 * Display Registers (which do not change across a page-flip)
6401 * so we need only reprogram the base address.
6403 OUT_RING(MI_DISPLAY_FLIP |
6404 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
6405 OUT_RING(fb->pitch);
6406 OUT_RING(obj->gtt_offset | obj->tiling_mode);
6408 /* XXX Enabling the panel-fitter across page-flip is so far
6409 * untested on non-native modes, so ignore it for now.
6410 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
6413 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
6414 OUT_RING(pf | pipesrc);
6420 static int intel_gen6_queue_flip(struct drm_device *dev,
6421 struct drm_crtc *crtc,
6422 struct drm_framebuffer *fb,
6423 struct drm_i915_gem_object *obj)
6425 struct drm_i915_private *dev_priv = dev->dev_private;
6426 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6427 uint32_t pf, pipesrc;
6430 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
6434 ret = BEGIN_LP_RING(4);
6438 OUT_RING(MI_DISPLAY_FLIP |
6439 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
6440 OUT_RING(fb->pitch | obj->tiling_mode);
6441 OUT_RING(obj->gtt_offset);
6443 pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
6444 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
6445 OUT_RING(pf | pipesrc);
6452 * On gen7 we currently use the blit ring because (in early silicon at least)
6453 * the render ring doesn't give us interrpts for page flip completion, which
6454 * means clients will hang after the first flip is queued. Fortunately the
6455 * blit ring generates interrupts properly, so use it instead.
6457 static int intel_gen7_queue_flip(struct drm_device *dev,
6458 struct drm_crtc *crtc,
6459 struct drm_framebuffer *fb,
6460 struct drm_i915_gem_object *obj)
6462 struct drm_i915_private *dev_priv = dev->dev_private;
6463 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6464 struct intel_ring_buffer *ring = &dev_priv->ring[BCS];
6467 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
6471 ret = intel_ring_begin(ring, 4);
6475 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | (intel_crtc->plane << 19));
6476 intel_ring_emit(ring, (fb->pitch | obj->tiling_mode));
6477 intel_ring_emit(ring, (obj->gtt_offset));
6478 intel_ring_emit(ring, (MI_NOOP));
6479 intel_ring_advance(ring);
6484 static int intel_default_queue_flip(struct drm_device *dev,
6485 struct drm_crtc *crtc,
6486 struct drm_framebuffer *fb,
6487 struct drm_i915_gem_object *obj)
6492 static int intel_crtc_page_flip(struct drm_crtc *crtc,
6493 struct drm_framebuffer *fb,
6494 struct drm_pending_vblank_event *event)
6496 struct drm_device *dev = crtc->dev;
6497 struct drm_i915_private *dev_priv = dev->dev_private;
6498 struct intel_framebuffer *intel_fb;
6499 struct drm_i915_gem_object *obj;
6500 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6501 struct intel_unpin_work *work;
6502 unsigned long flags;
6505 work = kzalloc(sizeof *work, GFP_KERNEL);
6509 work->event = event;
6510 work->dev = crtc->dev;
6511 intel_fb = to_intel_framebuffer(crtc->fb);
6512 work->old_fb_obj = intel_fb->obj;
6513 INIT_WORK(&work->work, intel_unpin_work_fn);
6515 /* We borrow the event spin lock for protecting unpin_work */
6516 spin_lock_irqsave(&dev->event_lock, flags);
6517 if (intel_crtc->unpin_work) {
6518 spin_unlock_irqrestore(&dev->event_lock, flags);
6521 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
6524 intel_crtc->unpin_work = work;
6525 spin_unlock_irqrestore(&dev->event_lock, flags);
6527 intel_fb = to_intel_framebuffer(fb);
6528 obj = intel_fb->obj;
6530 mutex_lock(&dev->struct_mutex);
6532 /* Reference the objects for the scheduled work. */
6533 drm_gem_object_reference(&work->old_fb_obj->base);
6534 drm_gem_object_reference(&obj->base);
6538 ret = drm_vblank_get(dev, intel_crtc->pipe);
6542 work->pending_flip_obj = obj;
6544 work->enable_stall_check = true;
6546 /* Block clients from rendering to the new back buffer until
6547 * the flip occurs and the object is no longer visible.
6549 atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
6551 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj);
6553 goto cleanup_pending;
6555 mutex_unlock(&dev->struct_mutex);
6557 trace_i915_flip_request(intel_crtc->plane, obj);
6562 atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
6564 drm_gem_object_unreference(&work->old_fb_obj->base);
6565 drm_gem_object_unreference(&obj->base);
6566 mutex_unlock(&dev->struct_mutex);
6568 spin_lock_irqsave(&dev->event_lock, flags);
6569 intel_crtc->unpin_work = NULL;
6570 spin_unlock_irqrestore(&dev->event_lock, flags);
6577 static void intel_sanitize_modesetting(struct drm_device *dev,
6578 int pipe, int plane)
6580 struct drm_i915_private *dev_priv = dev->dev_private;
6583 if (HAS_PCH_SPLIT(dev))
6586 /* Who knows what state these registers were left in by the BIOS or
6589 * If we leave the registers in a conflicting state (e.g. with the
6590 * display plane reading from the other pipe than the one we intend
6591 * to use) then when we attempt to teardown the active mode, we will
6592 * not disable the pipes and planes in the correct order -- leaving
6593 * a plane reading from a disabled pipe and possibly leading to
6594 * undefined behaviour.
6597 reg = DSPCNTR(plane);
6598 val = I915_READ(reg);
6600 if ((val & DISPLAY_PLANE_ENABLE) == 0)
6602 if (!!(val & DISPPLANE_SEL_PIPE_MASK) == pipe)
6605 /* This display plane is active and attached to the other CPU pipe. */
6608 /* Disable the plane and wait for it to stop reading from the pipe. */
6609 intel_disable_plane(dev_priv, plane, pipe);
6610 intel_disable_pipe(dev_priv, pipe);
6613 static void intel_crtc_reset(struct drm_crtc *crtc)
6615 struct drm_device *dev = crtc->dev;
6616 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6618 /* Reset flags back to the 'unknown' status so that they
6619 * will be correctly set on the initial modeset.
6621 intel_crtc->dpms_mode = -1;
6623 /* We need to fix up any BIOS configuration that conflicts with
6626 intel_sanitize_modesetting(dev, intel_crtc->pipe, intel_crtc->plane);
6629 static struct drm_crtc_helper_funcs intel_helper_funcs = {
6630 .dpms = intel_crtc_dpms,
6631 .mode_fixup = intel_crtc_mode_fixup,
6632 .mode_set = intel_crtc_mode_set,
6633 .mode_set_base = intel_pipe_set_base,
6634 .mode_set_base_atomic = intel_pipe_set_base_atomic,
6635 .load_lut = intel_crtc_load_lut,
6636 .disable = intel_crtc_disable,
6639 static const struct drm_crtc_funcs intel_crtc_funcs = {
6640 .reset = intel_crtc_reset,
6641 .cursor_set = intel_crtc_cursor_set,
6642 .cursor_move = intel_crtc_cursor_move,
6643 .gamma_set = intel_crtc_gamma_set,
6644 .set_config = drm_crtc_helper_set_config,
6645 .destroy = intel_crtc_destroy,
6646 .page_flip = intel_crtc_page_flip,
6649 static void intel_crtc_init(struct drm_device *dev, int pipe)
6651 drm_i915_private_t *dev_priv = dev->dev_private;
6652 struct intel_crtc *intel_crtc;
6655 intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
6656 if (intel_crtc == NULL)
6659 drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
6661 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
6662 for (i = 0; i < 256; i++) {
6663 intel_crtc->lut_r[i] = i;
6664 intel_crtc->lut_g[i] = i;
6665 intel_crtc->lut_b[i] = i;
6668 /* Swap pipes & planes for FBC on pre-965 */
6669 intel_crtc->pipe = pipe;
6670 intel_crtc->plane = pipe;
6671 if (IS_MOBILE(dev) && IS_GEN3(dev)) {
6672 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
6673 intel_crtc->plane = !pipe;
6676 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
6677 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
6678 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
6679 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
6681 intel_crtc_reset(&intel_crtc->base);
6682 intel_crtc->active = true; /* force the pipe off on setup_init_config */
6684 if (HAS_PCH_SPLIT(dev)) {
6685 intel_helper_funcs.prepare = ironlake_crtc_prepare;
6686 intel_helper_funcs.commit = ironlake_crtc_commit;
6688 intel_helper_funcs.prepare = i9xx_crtc_prepare;
6689 intel_helper_funcs.commit = i9xx_crtc_commit;
6692 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
6694 intel_crtc->busy = false;
6696 setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
6697 (unsigned long)intel_crtc);
6700 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
6701 struct drm_file *file)
6703 drm_i915_private_t *dev_priv = dev->dev_private;
6704 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
6705 struct drm_mode_object *drmmode_obj;
6706 struct intel_crtc *crtc;
6709 DRM_ERROR("called with no initialization\n");
6713 drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
6714 DRM_MODE_OBJECT_CRTC);
6717 DRM_ERROR("no such CRTC id\n");
6721 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
6722 pipe_from_crtc_id->pipe = crtc->pipe;
6727 static int intel_encoder_clones(struct drm_device *dev, int type_mask)
6729 struct intel_encoder *encoder;
6733 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
6734 if (type_mask & encoder->clone_mask)
6735 index_mask |= (1 << entry);
6742 static bool has_edp_a(struct drm_device *dev)
6744 struct drm_i915_private *dev_priv = dev->dev_private;
6746 if (!IS_MOBILE(dev))
6749 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
6753 (I915_READ(ILK_DISPLAY_CHICKEN_FUSES) & ILK_eDP_A_DISABLE))
6759 static void intel_setup_outputs(struct drm_device *dev)
6761 struct drm_i915_private *dev_priv = dev->dev_private;
6762 struct intel_encoder *encoder;
6763 bool dpd_is_edp = false;
6764 bool has_lvds = false;
6766 if (IS_MOBILE(dev) && !IS_I830(dev))
6767 has_lvds = intel_lvds_init(dev);
6768 if (!has_lvds && !HAS_PCH_SPLIT(dev)) {
6769 /* disable the panel fitter on everything but LVDS */
6770 I915_WRITE(PFIT_CONTROL, 0);
6773 if (HAS_PCH_SPLIT(dev)) {
6774 dpd_is_edp = intel_dpd_is_edp(dev);
6777 intel_dp_init(dev, DP_A);
6779 if (dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
6780 intel_dp_init(dev, PCH_DP_D);
6783 intel_crt_init(dev);
6785 if (HAS_PCH_SPLIT(dev)) {
6788 if (I915_READ(HDMIB) & PORT_DETECTED) {
6789 /* PCH SDVOB multiplex with HDMIB */
6790 found = intel_sdvo_init(dev, PCH_SDVOB);
6792 intel_hdmi_init(dev, HDMIB);
6793 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
6794 intel_dp_init(dev, PCH_DP_B);
6797 if (I915_READ(HDMIC) & PORT_DETECTED)
6798 intel_hdmi_init(dev, HDMIC);
6800 if (I915_READ(HDMID) & PORT_DETECTED)
6801 intel_hdmi_init(dev, HDMID);
6803 if (I915_READ(PCH_DP_C) & DP_DETECTED)
6804 intel_dp_init(dev, PCH_DP_C);
6806 if (!dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
6807 intel_dp_init(dev, PCH_DP_D);
6809 } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
6812 if (I915_READ(SDVOB) & SDVO_DETECTED) {
6813 DRM_DEBUG_KMS("probing SDVOB\n");
6814 found = intel_sdvo_init(dev, SDVOB);
6815 if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
6816 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
6817 intel_hdmi_init(dev, SDVOB);
6820 if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
6821 DRM_DEBUG_KMS("probing DP_B\n");
6822 intel_dp_init(dev, DP_B);
6826 /* Before G4X SDVOC doesn't have its own detect register */
6828 if (I915_READ(SDVOB) & SDVO_DETECTED) {
6829 DRM_DEBUG_KMS("probing SDVOC\n");
6830 found = intel_sdvo_init(dev, SDVOC);
6833 if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
6835 if (SUPPORTS_INTEGRATED_HDMI(dev)) {
6836 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
6837 intel_hdmi_init(dev, SDVOC);
6839 if (SUPPORTS_INTEGRATED_DP(dev)) {
6840 DRM_DEBUG_KMS("probing DP_C\n");
6841 intel_dp_init(dev, DP_C);
6845 if (SUPPORTS_INTEGRATED_DP(dev) &&
6846 (I915_READ(DP_D) & DP_DETECTED)) {
6847 DRM_DEBUG_KMS("probing DP_D\n");
6848 intel_dp_init(dev, DP_D);
6850 } else if (IS_GEN2(dev))
6851 intel_dvo_init(dev);
6853 if (SUPPORTS_TV(dev))
6856 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
6857 encoder->base.possible_crtcs = encoder->crtc_mask;
6858 encoder->base.possible_clones =
6859 intel_encoder_clones(dev, encoder->clone_mask);
6862 intel_panel_setup_backlight(dev);
6864 /* disable all the possible outputs/crtcs before entering KMS mode */
6865 drm_helper_disable_unused_functions(dev);
6868 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
6870 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
6872 drm_framebuffer_cleanup(fb);
6873 drm_gem_object_unreference_unlocked(&intel_fb->obj->base);
6878 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
6879 struct drm_file *file,
6880 unsigned int *handle)
6882 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
6883 struct drm_i915_gem_object *obj = intel_fb->obj;
6885 return drm_gem_handle_create(file, &obj->base, handle);
6888 static const struct drm_framebuffer_funcs intel_fb_funcs = {
6889 .destroy = intel_user_framebuffer_destroy,
6890 .create_handle = intel_user_framebuffer_create_handle,
6893 int intel_framebuffer_init(struct drm_device *dev,
6894 struct intel_framebuffer *intel_fb,
6895 struct drm_mode_fb_cmd *mode_cmd,
6896 struct drm_i915_gem_object *obj)
6900 if (obj->tiling_mode == I915_TILING_Y)
6903 if (mode_cmd->pitch & 63)
6906 switch (mode_cmd->bpp) {
6916 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
6918 DRM_ERROR("framebuffer init failed %d\n", ret);
6922 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
6923 intel_fb->obj = obj;
6927 static struct drm_framebuffer *
6928 intel_user_framebuffer_create(struct drm_device *dev,
6929 struct drm_file *filp,
6930 struct drm_mode_fb_cmd *mode_cmd)
6932 struct drm_i915_gem_object *obj;
6934 obj = to_intel_bo(drm_gem_object_lookup(dev, filp, mode_cmd->handle));
6935 if (&obj->base == NULL)
6936 return ERR_PTR(-ENOENT);
6938 return intel_framebuffer_create(dev, mode_cmd, obj);
6941 static const struct drm_mode_config_funcs intel_mode_funcs = {
6942 .fb_create = intel_user_framebuffer_create,
6943 .output_poll_changed = intel_fb_output_poll_changed,
6946 static struct drm_i915_gem_object *
6947 intel_alloc_context_page(struct drm_device *dev)
6949 struct drm_i915_gem_object *ctx;
6952 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
6954 ctx = i915_gem_alloc_object(dev, 4096);
6956 DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
6960 ret = i915_gem_object_pin(ctx, 4096, true);
6962 DRM_ERROR("failed to pin power context: %d\n", ret);
6966 ret = i915_gem_object_set_to_gtt_domain(ctx, 1);
6968 DRM_ERROR("failed to set-domain on power context: %d\n", ret);
6975 i915_gem_object_unpin(ctx);
6977 drm_gem_object_unreference(&ctx->base);
6978 mutex_unlock(&dev->struct_mutex);
6982 bool ironlake_set_drps(struct drm_device *dev, u8 val)
6984 struct drm_i915_private *dev_priv = dev->dev_private;
6987 rgvswctl = I915_READ16(MEMSWCTL);
6988 if (rgvswctl & MEMCTL_CMD_STS) {
6989 DRM_DEBUG("gpu busy, RCS change rejected\n");
6990 return false; /* still busy with another command */
6993 rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
6994 (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM;
6995 I915_WRITE16(MEMSWCTL, rgvswctl);
6996 POSTING_READ16(MEMSWCTL);
6998 rgvswctl |= MEMCTL_CMD_STS;
6999 I915_WRITE16(MEMSWCTL, rgvswctl);
7004 void ironlake_enable_drps(struct drm_device *dev)
7006 struct drm_i915_private *dev_priv = dev->dev_private;
7007 u32 rgvmodectl = I915_READ(MEMMODECTL);
7008 u8 fmax, fmin, fstart, vstart;
7010 /* Enable temp reporting */
7011 I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN);
7012 I915_WRITE16(TSC1, I915_READ(TSC1) | TSE);
7014 /* 100ms RC evaluation intervals */
7015 I915_WRITE(RCUPEI, 100000);
7016 I915_WRITE(RCDNEI, 100000);
7018 /* Set max/min thresholds to 90ms and 80ms respectively */
7019 I915_WRITE(RCBMAXAVG, 90000);
7020 I915_WRITE(RCBMINAVG, 80000);
7022 I915_WRITE(MEMIHYST, 1);
7024 /* Set up min, max, and cur for interrupt handling */
7025 fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT;
7026 fmin = (rgvmodectl & MEMMODE_FMIN_MASK);
7027 fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >>
7028 MEMMODE_FSTART_SHIFT;
7030 vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >>
7033 dev_priv->fmax = fmax; /* IPS callback will increase this */
7034 dev_priv->fstart = fstart;
7036 dev_priv->max_delay = fstart;
7037 dev_priv->min_delay = fmin;
7038 dev_priv->cur_delay = fstart;
7040 DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n",
7041 fmax, fmin, fstart);
7043 I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN);
7046 * Interrupts will be enabled in ironlake_irq_postinstall
7049 I915_WRITE(VIDSTART, vstart);
7050 POSTING_READ(VIDSTART);
7052 rgvmodectl |= MEMMODE_SWMODE_EN;
7053 I915_WRITE(MEMMODECTL, rgvmodectl);
7055 if (wait_for((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10))
7056 DRM_ERROR("stuck trying to change perf mode\n");
7059 ironlake_set_drps(dev, fstart);
7061 dev_priv->last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) +
7063 dev_priv->last_time1 = jiffies_to_msecs(jiffies);
7064 dev_priv->last_count2 = I915_READ(0x112f4);
7065 getrawmonotonic(&dev_priv->last_time2);
7068 void ironlake_disable_drps(struct drm_device *dev)
7070 struct drm_i915_private *dev_priv = dev->dev_private;
7071 u16 rgvswctl = I915_READ16(MEMSWCTL);
7073 /* Ack interrupts, disable EFC interrupt */
7074 I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN);
7075 I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG);
7076 I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT);
7077 I915_WRITE(DEIIR, DE_PCU_EVENT);
7078 I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT);
7080 /* Go back to the starting frequency */
7081 ironlake_set_drps(dev, dev_priv->fstart);
7083 rgvswctl |= MEMCTL_CMD_STS;
7084 I915_WRITE(MEMSWCTL, rgvswctl);
7089 void gen6_set_rps(struct drm_device *dev, u8 val)
7091 struct drm_i915_private *dev_priv = dev->dev_private;
7094 swreq = (val & 0x3ff) << 25;
7095 I915_WRITE(GEN6_RPNSWREQ, swreq);
7098 void gen6_disable_rps(struct drm_device *dev)
7100 struct drm_i915_private *dev_priv = dev->dev_private;
7102 I915_WRITE(GEN6_RPNSWREQ, 1 << 31);
7103 I915_WRITE(GEN6_PMINTRMSK, 0xffffffff);
7104 I915_WRITE(GEN6_PMIER, 0);
7106 spin_lock_irq(&dev_priv->rps_lock);
7107 dev_priv->pm_iir = 0;
7108 spin_unlock_irq(&dev_priv->rps_lock);
7110 I915_WRITE(GEN6_PMIIR, I915_READ(GEN6_PMIIR));
7113 static unsigned long intel_pxfreq(u32 vidfreq)
7116 int div = (vidfreq & 0x3f0000) >> 16;
7117 int post = (vidfreq & 0x3000) >> 12;
7118 int pre = (vidfreq & 0x7);
7123 freq = ((div * 133333) / ((1<<post) * pre));
7128 void intel_init_emon(struct drm_device *dev)
7130 struct drm_i915_private *dev_priv = dev->dev_private;
7135 /* Disable to program */
7139 /* Program energy weights for various events */
7140 I915_WRITE(SDEW, 0x15040d00);
7141 I915_WRITE(CSIEW0, 0x007f0000);
7142 I915_WRITE(CSIEW1, 0x1e220004);
7143 I915_WRITE(CSIEW2, 0x04000004);
7145 for (i = 0; i < 5; i++)
7146 I915_WRITE(PEW + (i * 4), 0);
7147 for (i = 0; i < 3; i++)
7148 I915_WRITE(DEW + (i * 4), 0);
7150 /* Program P-state weights to account for frequency power adjustment */
7151 for (i = 0; i < 16; i++) {
7152 u32 pxvidfreq = I915_READ(PXVFREQ_BASE + (i * 4));
7153 unsigned long freq = intel_pxfreq(pxvidfreq);
7154 unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >>
7159 val *= (freq / 1000);
7161 val /= (127*127*900);
7163 DRM_ERROR("bad pxval: %ld\n", val);
7166 /* Render standby states get 0 weight */
7170 for (i = 0; i < 4; i++) {
7171 u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) |
7172 (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]);
7173 I915_WRITE(PXW + (i * 4), val);
7176 /* Adjust magic regs to magic values (more experimental results) */
7177 I915_WRITE(OGW0, 0);
7178 I915_WRITE(OGW1, 0);
7179 I915_WRITE(EG0, 0x00007f00);
7180 I915_WRITE(EG1, 0x0000000e);
7181 I915_WRITE(EG2, 0x000e0000);
7182 I915_WRITE(EG3, 0x68000300);
7183 I915_WRITE(EG4, 0x42000000);
7184 I915_WRITE(EG5, 0x00140031);
7188 for (i = 0; i < 8; i++)
7189 I915_WRITE(PXWL + (i * 4), 0);
7191 /* Enable PMON + select events */
7192 I915_WRITE(ECR, 0x80000019);
7194 lcfuse = I915_READ(LCFUSE02);
7196 dev_priv->corr = (lcfuse & LCFUSE_HIV_MASK);
7199 void gen6_enable_rps(struct drm_i915_private *dev_priv)
7201 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
7202 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
7203 u32 pcu_mbox, rc6_mask = 0;
7204 int cur_freq, min_freq, max_freq;
7207 /* Here begins a magic sequence of register writes to enable
7208 * auto-downclocking.
7210 * Perhaps there might be some value in exposing these to
7213 I915_WRITE(GEN6_RC_STATE, 0);
7214 mutex_lock(&dev_priv->dev->struct_mutex);
7215 gen6_gt_force_wake_get(dev_priv);
7217 /* disable the counters and set deterministic thresholds */
7218 I915_WRITE(GEN6_RC_CONTROL, 0);
7220 I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16);
7221 I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30);
7222 I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30);
7223 I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000);
7224 I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25);
7226 for (i = 0; i < I915_NUM_RINGS; i++)
7227 I915_WRITE(RING_MAX_IDLE(dev_priv->ring[i].mmio_base), 10);
7229 I915_WRITE(GEN6_RC_SLEEP, 0);
7230 I915_WRITE(GEN6_RC1e_THRESHOLD, 1000);
7231 I915_WRITE(GEN6_RC6_THRESHOLD, 50000);
7232 I915_WRITE(GEN6_RC6p_THRESHOLD, 100000);
7233 I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */
7235 if (i915_enable_rc6)
7236 rc6_mask = GEN6_RC_CTL_RC6p_ENABLE |
7237 GEN6_RC_CTL_RC6_ENABLE;
7239 I915_WRITE(GEN6_RC_CONTROL,
7241 GEN6_RC_CTL_EI_MODE(1) |
7242 GEN6_RC_CTL_HW_ENABLE);
7244 I915_WRITE(GEN6_RPNSWREQ,
7245 GEN6_FREQUENCY(10) |
7247 GEN6_AGGRESSIVE_TURBO);
7248 I915_WRITE(GEN6_RC_VIDEO_FREQ,
7249 GEN6_FREQUENCY(12));
7251 I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000);
7252 I915_WRITE(GEN6_RP_INTERRUPT_LIMITS,
7255 I915_WRITE(GEN6_RP_UP_THRESHOLD, 10000);
7256 I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 1000000);
7257 I915_WRITE(GEN6_RP_UP_EI, 100000);
7258 I915_WRITE(GEN6_RP_DOWN_EI, 5000000);
7259 I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
7260 I915_WRITE(GEN6_RP_CONTROL,
7261 GEN6_RP_MEDIA_TURBO |
7262 GEN6_RP_USE_NORMAL_FREQ |
7263 GEN6_RP_MEDIA_IS_GFX |
7265 GEN6_RP_UP_BUSY_AVG |
7266 GEN6_RP_DOWN_IDLE_CONT);
7268 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
7270 DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
7272 I915_WRITE(GEN6_PCODE_DATA, 0);
7273 I915_WRITE(GEN6_PCODE_MAILBOX,
7275 GEN6_PCODE_WRITE_MIN_FREQ_TABLE);
7276 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
7278 DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
7280 min_freq = (rp_state_cap & 0xff0000) >> 16;
7281 max_freq = rp_state_cap & 0xff;
7282 cur_freq = (gt_perf_status & 0xff00) >> 8;
7284 /* Check for overclock support */
7285 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
7287 DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
7288 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_READ_OC_PARAMS);
7289 pcu_mbox = I915_READ(GEN6_PCODE_DATA);
7290 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
7292 DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
7293 if (pcu_mbox & (1<<31)) { /* OC supported */
7294 max_freq = pcu_mbox & 0xff;
7295 DRM_DEBUG_DRIVER("overclocking supported, adjusting frequency max to %dMHz\n", pcu_mbox * 50);
7298 /* In units of 100MHz */
7299 dev_priv->max_delay = max_freq;
7300 dev_priv->min_delay = min_freq;
7301 dev_priv->cur_delay = cur_freq;
7303 /* requires MSI enabled */
7304 I915_WRITE(GEN6_PMIER,
7305 GEN6_PM_MBOX_EVENT |
7306 GEN6_PM_THERMAL_EVENT |
7307 GEN6_PM_RP_DOWN_TIMEOUT |
7308 GEN6_PM_RP_UP_THRESHOLD |
7309 GEN6_PM_RP_DOWN_THRESHOLD |
7310 GEN6_PM_RP_UP_EI_EXPIRED |
7311 GEN6_PM_RP_DOWN_EI_EXPIRED);
7312 spin_lock_irq(&dev_priv->rps_lock);
7313 WARN_ON(dev_priv->pm_iir != 0);
7314 I915_WRITE(GEN6_PMIMR, 0);
7315 spin_unlock_irq(&dev_priv->rps_lock);
7316 /* enable all PM interrupts */
7317 I915_WRITE(GEN6_PMINTRMSK, 0);
7319 gen6_gt_force_wake_put(dev_priv);
7320 mutex_unlock(&dev_priv->dev->struct_mutex);
7323 static void ironlake_init_clock_gating(struct drm_device *dev)
7325 struct drm_i915_private *dev_priv = dev->dev_private;
7326 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
7328 /* Required for FBC */
7329 dspclk_gate |= DPFCUNIT_CLOCK_GATE_DISABLE |
7330 DPFCRUNIT_CLOCK_GATE_DISABLE |
7331 DPFDUNIT_CLOCK_GATE_DISABLE;
7332 /* Required for CxSR */
7333 dspclk_gate |= DPARBUNIT_CLOCK_GATE_DISABLE;
7335 I915_WRITE(PCH_3DCGDIS0,
7336 MARIUNIT_CLOCK_GATE_DISABLE |
7337 SVSMUNIT_CLOCK_GATE_DISABLE);
7338 I915_WRITE(PCH_3DCGDIS1,
7339 VFMUNIT_CLOCK_GATE_DISABLE);
7341 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
7344 * According to the spec the following bits should be set in
7345 * order to enable memory self-refresh
7346 * The bit 22/21 of 0x42004
7347 * The bit 5 of 0x42020
7348 * The bit 15 of 0x45000
7350 I915_WRITE(ILK_DISPLAY_CHICKEN2,
7351 (I915_READ(ILK_DISPLAY_CHICKEN2) |
7352 ILK_DPARB_GATE | ILK_VSDPFD_FULL));
7353 I915_WRITE(ILK_DSPCLK_GATE,
7354 (I915_READ(ILK_DSPCLK_GATE) |
7355 ILK_DPARB_CLK_GATE));
7356 I915_WRITE(DISP_ARB_CTL,
7357 (I915_READ(DISP_ARB_CTL) |
7359 I915_WRITE(WM3_LP_ILK, 0);
7360 I915_WRITE(WM2_LP_ILK, 0);
7361 I915_WRITE(WM1_LP_ILK, 0);
7364 * Based on the document from hardware guys the following bits
7365 * should be set unconditionally in order to enable FBC.
7366 * The bit 22 of 0x42000
7367 * The bit 22 of 0x42004
7368 * The bit 7,8,9 of 0x42020.
7370 if (IS_IRONLAKE_M(dev)) {
7371 I915_WRITE(ILK_DISPLAY_CHICKEN1,
7372 I915_READ(ILK_DISPLAY_CHICKEN1) |
7374 I915_WRITE(ILK_DISPLAY_CHICKEN2,
7375 I915_READ(ILK_DISPLAY_CHICKEN2) |
7377 I915_WRITE(ILK_DSPCLK_GATE,
7378 I915_READ(ILK_DSPCLK_GATE) |
7384 I915_WRITE(ILK_DISPLAY_CHICKEN2,
7385 I915_READ(ILK_DISPLAY_CHICKEN2) |
7386 ILK_ELPIN_409_SELECT);
7387 I915_WRITE(_3D_CHICKEN2,
7388 _3D_CHICKEN2_WM_READ_PIPELINED << 16 |
7389 _3D_CHICKEN2_WM_READ_PIPELINED);
7392 static void gen6_init_clock_gating(struct drm_device *dev)
7394 struct drm_i915_private *dev_priv = dev->dev_private;
7396 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
7398 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
7400 I915_WRITE(ILK_DISPLAY_CHICKEN2,
7401 I915_READ(ILK_DISPLAY_CHICKEN2) |
7402 ILK_ELPIN_409_SELECT);
7404 I915_WRITE(WM3_LP_ILK, 0);
7405 I915_WRITE(WM2_LP_ILK, 0);
7406 I915_WRITE(WM1_LP_ILK, 0);
7408 /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock
7409 * gating disable must be set. Failure to set it results in
7410 * flickering pixels due to Z write ordering failures after
7411 * some amount of runtime in the Mesa "fire" demo, and Unigine
7412 * Sanctuary and Tropics, and apparently anything else with
7413 * alpha test or pixel discard.
7415 * According to the spec, bit 11 (RCCUNIT) must also be set,
7416 * but we didn't debug actual testcases to find it out.
7418 I915_WRITE(GEN6_UCGCTL2,
7419 GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
7420 GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
7423 * According to the spec the following bits should be
7424 * set in order to enable memory self-refresh and fbc:
7425 * The bit21 and bit22 of 0x42000
7426 * The bit21 and bit22 of 0x42004
7427 * The bit5 and bit7 of 0x42020
7428 * The bit14 of 0x70180
7429 * The bit14 of 0x71180
7431 I915_WRITE(ILK_DISPLAY_CHICKEN1,
7432 I915_READ(ILK_DISPLAY_CHICKEN1) |
7433 ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS);
7434 I915_WRITE(ILK_DISPLAY_CHICKEN2,
7435 I915_READ(ILK_DISPLAY_CHICKEN2) |
7436 ILK_DPARB_GATE | ILK_VSDPFD_FULL);
7437 I915_WRITE(ILK_DSPCLK_GATE,
7438 I915_READ(ILK_DSPCLK_GATE) |
7439 ILK_DPARB_CLK_GATE |
7443 I915_WRITE(DSPCNTR(pipe),
7444 I915_READ(DSPCNTR(pipe)) |
7445 DISPPLANE_TRICKLE_FEED_DISABLE);
7448 static void ivybridge_init_clock_gating(struct drm_device *dev)
7450 struct drm_i915_private *dev_priv = dev->dev_private;
7452 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
7454 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
7456 I915_WRITE(WM3_LP_ILK, 0);
7457 I915_WRITE(WM2_LP_ILK, 0);
7458 I915_WRITE(WM1_LP_ILK, 0);
7460 /* According to the spec, bit 13 (RCZUNIT) must be set on IVB.
7461 * This implements the WaDisableRCZUnitClockGating workaround.
7463 I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
7465 I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE);
7467 /* WaApplyL3ControlAndL3ChickenMode requires those two on Ivy Bridge */
7468 I915_WRITE(GEN7_L3CNTLREG1,
7469 GEN7_WA_FOR_GEN7_L3_CONTROL);
7470 I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER,
7471 GEN7_WA_L3_CHICKEN_MODE);
7473 /* This is required by WaCatErrorRejectionIssue */
7474 I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
7475 I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
7476 GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
7479 I915_WRITE(DSPCNTR(pipe),
7480 I915_READ(DSPCNTR(pipe)) |
7481 DISPPLANE_TRICKLE_FEED_DISABLE);
7484 static void g4x_init_clock_gating(struct drm_device *dev)
7486 struct drm_i915_private *dev_priv = dev->dev_private;
7487 uint32_t dspclk_gate;
7489 I915_WRITE(RENCLK_GATE_D1, 0);
7490 I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
7491 GS_UNIT_CLOCK_GATE_DISABLE |
7492 CL_UNIT_CLOCK_GATE_DISABLE);
7493 I915_WRITE(RAMCLK_GATE_D, 0);
7494 dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
7495 OVRUNIT_CLOCK_GATE_DISABLE |
7496 OVCUNIT_CLOCK_GATE_DISABLE;
7498 dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
7499 I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
7502 static void crestline_init_clock_gating(struct drm_device *dev)
7504 struct drm_i915_private *dev_priv = dev->dev_private;
7506 I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
7507 I915_WRITE(RENCLK_GATE_D2, 0);
7508 I915_WRITE(DSPCLK_GATE_D, 0);
7509 I915_WRITE(RAMCLK_GATE_D, 0);
7510 I915_WRITE16(DEUC, 0);
7513 static void broadwater_init_clock_gating(struct drm_device *dev)
7515 struct drm_i915_private *dev_priv = dev->dev_private;
7517 I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
7518 I965_RCC_CLOCK_GATE_DISABLE |
7519 I965_RCPB_CLOCK_GATE_DISABLE |
7520 I965_ISC_CLOCK_GATE_DISABLE |
7521 I965_FBC_CLOCK_GATE_DISABLE);
7522 I915_WRITE(RENCLK_GATE_D2, 0);
7525 static void gen3_init_clock_gating(struct drm_device *dev)
7527 struct drm_i915_private *dev_priv = dev->dev_private;
7528 u32 dstate = I915_READ(D_STATE);
7530 dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
7531 DSTATE_DOT_CLOCK_GATING;
7532 I915_WRITE(D_STATE, dstate);
7535 static void i85x_init_clock_gating(struct drm_device *dev)
7537 struct drm_i915_private *dev_priv = dev->dev_private;
7539 I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
7542 static void i830_init_clock_gating(struct drm_device *dev)
7544 struct drm_i915_private *dev_priv = dev->dev_private;
7546 I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
7549 static void ibx_init_clock_gating(struct drm_device *dev)
7551 struct drm_i915_private *dev_priv = dev->dev_private;
7554 * On Ibex Peak and Cougar Point, we need to disable clock
7555 * gating for the panel power sequencer or it will fail to
7556 * start up when no ports are active.
7558 I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
7561 static void cpt_init_clock_gating(struct drm_device *dev)
7563 struct drm_i915_private *dev_priv = dev->dev_private;
7566 * On Ibex Peak and Cougar Point, we need to disable clock
7567 * gating for the panel power sequencer or it will fail to
7568 * start up when no ports are active.
7570 I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
7571 I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |
7572 DPLS_EDP_PPS_FIX_DIS);
7575 static void ironlake_teardown_rc6(struct drm_device *dev)
7577 struct drm_i915_private *dev_priv = dev->dev_private;
7579 if (dev_priv->renderctx) {
7580 i915_gem_object_unpin(dev_priv->renderctx);
7581 drm_gem_object_unreference(&dev_priv->renderctx->base);
7582 dev_priv->renderctx = NULL;
7585 if (dev_priv->pwrctx) {
7586 i915_gem_object_unpin(dev_priv->pwrctx);
7587 drm_gem_object_unreference(&dev_priv->pwrctx->base);
7588 dev_priv->pwrctx = NULL;
7592 static void ironlake_disable_rc6(struct drm_device *dev)
7594 struct drm_i915_private *dev_priv = dev->dev_private;
7596 if (I915_READ(PWRCTXA)) {
7597 /* Wake the GPU, prevent RC6, then restore RSTDBYCTL */
7598 I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) | RCX_SW_EXIT);
7599 wait_for(((I915_READ(RSTDBYCTL) & RSX_STATUS_MASK) == RSX_STATUS_ON),
7602 I915_WRITE(PWRCTXA, 0);
7603 POSTING_READ(PWRCTXA);
7605 I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
7606 POSTING_READ(RSTDBYCTL);
7609 ironlake_teardown_rc6(dev);
7612 static int ironlake_setup_rc6(struct drm_device *dev)
7614 struct drm_i915_private *dev_priv = dev->dev_private;
7616 if (dev_priv->renderctx == NULL)
7617 dev_priv->renderctx = intel_alloc_context_page(dev);
7618 if (!dev_priv->renderctx)
7621 if (dev_priv->pwrctx == NULL)
7622 dev_priv->pwrctx = intel_alloc_context_page(dev);
7623 if (!dev_priv->pwrctx) {
7624 ironlake_teardown_rc6(dev);
7631 void ironlake_enable_rc6(struct drm_device *dev)
7633 struct drm_i915_private *dev_priv = dev->dev_private;
7636 /* rc6 disabled by default due to repeated reports of hanging during
7639 if (!i915_enable_rc6)
7642 mutex_lock(&dev->struct_mutex);
7643 ret = ironlake_setup_rc6(dev);
7645 mutex_unlock(&dev->struct_mutex);
7650 * GPU can automatically power down the render unit if given a page
7653 ret = BEGIN_LP_RING(6);
7655 ironlake_teardown_rc6(dev);
7656 mutex_unlock(&dev->struct_mutex);
7660 OUT_RING(MI_SUSPEND_FLUSH | MI_SUSPEND_FLUSH_EN);
7661 OUT_RING(MI_SET_CONTEXT);
7662 OUT_RING(dev_priv->renderctx->gtt_offset |
7664 MI_SAVE_EXT_STATE_EN |
7665 MI_RESTORE_EXT_STATE_EN |
7666 MI_RESTORE_INHIBIT);
7667 OUT_RING(MI_SUSPEND_FLUSH);
7673 * Wait for the command parser to advance past MI_SET_CONTEXT. The HW
7674 * does an implicit flush, combined with MI_FLUSH above, it should be
7675 * safe to assume that renderctx is valid
7677 ret = intel_wait_ring_idle(LP_RING(dev_priv));
7679 DRM_ERROR("failed to enable ironlake power power savings\n");
7680 ironlake_teardown_rc6(dev);
7681 mutex_unlock(&dev->struct_mutex);
7685 I915_WRITE(PWRCTXA, dev_priv->pwrctx->gtt_offset | PWRCTX_EN);
7686 I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
7687 mutex_unlock(&dev->struct_mutex);
7690 void intel_init_clock_gating(struct drm_device *dev)
7692 struct drm_i915_private *dev_priv = dev->dev_private;
7694 dev_priv->display.init_clock_gating(dev);
7696 if (dev_priv->display.init_pch_clock_gating)
7697 dev_priv->display.init_pch_clock_gating(dev);
7700 /* Set up chip specific display functions */
7701 static void intel_init_display(struct drm_device *dev)
7703 struct drm_i915_private *dev_priv = dev->dev_private;
7705 /* We always want a DPMS function */
7706 if (HAS_PCH_SPLIT(dev)) {
7707 dev_priv->display.dpms = ironlake_crtc_dpms;
7708 dev_priv->display.crtc_mode_set = ironlake_crtc_mode_set;
7710 dev_priv->display.dpms = i9xx_crtc_dpms;
7711 dev_priv->display.crtc_mode_set = i9xx_crtc_mode_set;
7714 if (I915_HAS_FBC(dev)) {
7715 if (HAS_PCH_SPLIT(dev)) {
7716 dev_priv->display.fbc_enabled = ironlake_fbc_enabled;
7717 dev_priv->display.enable_fbc = ironlake_enable_fbc;
7718 dev_priv->display.disable_fbc = ironlake_disable_fbc;
7719 } else if (IS_GM45(dev)) {
7720 dev_priv->display.fbc_enabled = g4x_fbc_enabled;
7721 dev_priv->display.enable_fbc = g4x_enable_fbc;
7722 dev_priv->display.disable_fbc = g4x_disable_fbc;
7723 } else if (IS_CRESTLINE(dev)) {
7724 dev_priv->display.fbc_enabled = i8xx_fbc_enabled;
7725 dev_priv->display.enable_fbc = i8xx_enable_fbc;
7726 dev_priv->display.disable_fbc = i8xx_disable_fbc;
7728 /* 855GM needs testing */
7731 /* Returns the core display clock speed */
7732 if (IS_I945G(dev) || (IS_G33(dev) && ! IS_PINEVIEW_M(dev)))
7733 dev_priv->display.get_display_clock_speed =
7734 i945_get_display_clock_speed;
7735 else if (IS_I915G(dev))
7736 dev_priv->display.get_display_clock_speed =
7737 i915_get_display_clock_speed;
7738 else if (IS_I945GM(dev) || IS_845G(dev) || IS_PINEVIEW_M(dev))
7739 dev_priv->display.get_display_clock_speed =
7740 i9xx_misc_get_display_clock_speed;
7741 else if (IS_I915GM(dev))
7742 dev_priv->display.get_display_clock_speed =
7743 i915gm_get_display_clock_speed;
7744 else if (IS_I865G(dev))
7745 dev_priv->display.get_display_clock_speed =
7746 i865_get_display_clock_speed;
7747 else if (IS_I85X(dev))
7748 dev_priv->display.get_display_clock_speed =
7749 i855_get_display_clock_speed;
7751 dev_priv->display.get_display_clock_speed =
7752 i830_get_display_clock_speed;
7754 /* For FIFO watermark updates */
7755 if (HAS_PCH_SPLIT(dev)) {
7756 if (HAS_PCH_IBX(dev))
7757 dev_priv->display.init_pch_clock_gating = ibx_init_clock_gating;
7758 else if (HAS_PCH_CPT(dev))
7759 dev_priv->display.init_pch_clock_gating = cpt_init_clock_gating;
7762 if (I915_READ(MLTR_ILK) & ILK_SRLT_MASK)
7763 dev_priv->display.update_wm = ironlake_update_wm;
7765 DRM_DEBUG_KMS("Failed to get proper latency. "
7767 dev_priv->display.update_wm = NULL;
7769 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
7770 dev_priv->display.init_clock_gating = ironlake_init_clock_gating;
7771 } else if (IS_GEN6(dev)) {
7772 if (SNB_READ_WM0_LATENCY()) {
7773 dev_priv->display.update_wm = sandybridge_update_wm;
7775 DRM_DEBUG_KMS("Failed to read display plane latency. "
7777 dev_priv->display.update_wm = NULL;
7779 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
7780 dev_priv->display.init_clock_gating = gen6_init_clock_gating;
7781 } else if (IS_IVYBRIDGE(dev)) {
7782 /* FIXME: detect B0+ stepping and use auto training */
7783 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
7784 if (SNB_READ_WM0_LATENCY()) {
7785 dev_priv->display.update_wm = sandybridge_update_wm;
7787 DRM_DEBUG_KMS("Failed to read display plane latency. "
7789 dev_priv->display.update_wm = NULL;
7791 dev_priv->display.init_clock_gating = ivybridge_init_clock_gating;
7794 dev_priv->display.update_wm = NULL;
7795 } else if (IS_PINEVIEW(dev)) {
7796 if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev),
7799 dev_priv->mem_freq)) {
7800 DRM_INFO("failed to find known CxSR latency "
7801 "(found ddr%s fsb freq %d, mem freq %d), "
7803 (dev_priv->is_ddr3 == 1) ? "3": "2",
7804 dev_priv->fsb_freq, dev_priv->mem_freq);
7805 /* Disable CxSR and never update its watermark again */
7806 pineview_disable_cxsr(dev);
7807 dev_priv->display.update_wm = NULL;
7809 dev_priv->display.update_wm = pineview_update_wm;
7810 dev_priv->display.init_clock_gating = gen3_init_clock_gating;
7811 } else if (IS_G4X(dev)) {
7812 dev_priv->display.update_wm = g4x_update_wm;
7813 dev_priv->display.init_clock_gating = g4x_init_clock_gating;
7814 } else if (IS_GEN4(dev)) {
7815 dev_priv->display.update_wm = i965_update_wm;
7816 if (IS_CRESTLINE(dev))
7817 dev_priv->display.init_clock_gating = crestline_init_clock_gating;
7818 else if (IS_BROADWATER(dev))
7819 dev_priv->display.init_clock_gating = broadwater_init_clock_gating;
7820 } else if (IS_GEN3(dev)) {
7821 dev_priv->display.update_wm = i9xx_update_wm;
7822 dev_priv->display.get_fifo_size = i9xx_get_fifo_size;
7823 dev_priv->display.init_clock_gating = gen3_init_clock_gating;
7824 } else if (IS_I865G(dev)) {
7825 dev_priv->display.update_wm = i830_update_wm;
7826 dev_priv->display.init_clock_gating = i85x_init_clock_gating;
7827 dev_priv->display.get_fifo_size = i830_get_fifo_size;
7828 } else if (IS_I85X(dev)) {
7829 dev_priv->display.update_wm = i9xx_update_wm;
7830 dev_priv->display.get_fifo_size = i85x_get_fifo_size;
7831 dev_priv->display.init_clock_gating = i85x_init_clock_gating;
7833 dev_priv->display.update_wm = i830_update_wm;
7834 dev_priv->display.init_clock_gating = i830_init_clock_gating;
7836 dev_priv->display.get_fifo_size = i845_get_fifo_size;
7838 dev_priv->display.get_fifo_size = i830_get_fifo_size;
7841 /* Default just returns -ENODEV to indicate unsupported */
7842 dev_priv->display.queue_flip = intel_default_queue_flip;
7844 switch (INTEL_INFO(dev)->gen) {
7846 dev_priv->display.queue_flip = intel_gen2_queue_flip;
7850 dev_priv->display.queue_flip = intel_gen3_queue_flip;
7855 dev_priv->display.queue_flip = intel_gen4_queue_flip;
7859 dev_priv->display.queue_flip = intel_gen6_queue_flip;
7862 dev_priv->display.queue_flip = intel_gen7_queue_flip;
7868 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
7869 * resume, or other times. This quirk makes sure that's the case for
7872 static void quirk_pipea_force (struct drm_device *dev)
7874 struct drm_i915_private *dev_priv = dev->dev_private;
7876 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
7877 DRM_DEBUG_DRIVER("applying pipe a force quirk\n");
7881 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
7883 static void quirk_ssc_force_disable(struct drm_device *dev)
7885 struct drm_i915_private *dev_priv = dev->dev_private;
7886 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
7889 struct intel_quirk {
7891 int subsystem_vendor;
7892 int subsystem_device;
7893 void (*hook)(struct drm_device *dev);
7896 struct intel_quirk intel_quirks[] = {
7897 /* HP Compaq 2730p needs pipe A force quirk (LP: #291555) */
7898 { 0x2a42, 0x103c, 0x30eb, quirk_pipea_force },
7899 /* HP Mini needs pipe A force quirk (LP: #322104) */
7900 { 0x27ae,0x103c, 0x361a, quirk_pipea_force },
7902 /* Thinkpad R31 needs pipe A force quirk */
7903 { 0x3577, 0x1014, 0x0505, quirk_pipea_force },
7904 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
7905 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
7907 /* ThinkPad X30 needs pipe A force quirk (LP: #304614) */
7908 { 0x3577, 0x1014, 0x0513, quirk_pipea_force },
7909 /* ThinkPad X40 needs pipe A force quirk */
7911 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
7912 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
7914 /* 855 & before need to leave pipe A & dpll A up */
7915 { 0x3582, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
7916 { 0x2562, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
7918 /* Lenovo U160 cannot use SSC on LVDS */
7919 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
7922 static void intel_init_quirks(struct drm_device *dev)
7924 struct pci_dev *d = dev->pdev;
7927 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
7928 struct intel_quirk *q = &intel_quirks[i];
7930 if (d->device == q->device &&
7931 (d->subsystem_vendor == q->subsystem_vendor ||
7932 q->subsystem_vendor == PCI_ANY_ID) &&
7933 (d->subsystem_device == q->subsystem_device ||
7934 q->subsystem_device == PCI_ANY_ID))
7939 /* Disable the VGA plane that we never use */
7940 static void i915_disable_vga(struct drm_device *dev)
7942 struct drm_i915_private *dev_priv = dev->dev_private;
7946 if (HAS_PCH_SPLIT(dev))
7947 vga_reg = CPU_VGACNTRL;
7951 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
7952 outb(1, VGA_SR_INDEX);
7953 sr1 = inb(VGA_SR_DATA);
7954 outb(sr1 | 1<<5, VGA_SR_DATA);
7955 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
7958 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
7959 POSTING_READ(vga_reg);
7962 void intel_modeset_init(struct drm_device *dev)
7964 struct drm_i915_private *dev_priv = dev->dev_private;
7967 drm_mode_config_init(dev);
7969 dev->mode_config.min_width = 0;
7970 dev->mode_config.min_height = 0;
7972 dev->mode_config.funcs = (void *)&intel_mode_funcs;
7974 intel_init_quirks(dev);
7976 intel_init_display(dev);
7979 dev->mode_config.max_width = 2048;
7980 dev->mode_config.max_height = 2048;
7981 } else if (IS_GEN3(dev)) {
7982 dev->mode_config.max_width = 4096;
7983 dev->mode_config.max_height = 4096;
7985 dev->mode_config.max_width = 8192;
7986 dev->mode_config.max_height = 8192;
7988 dev->mode_config.fb_base = dev->agp->base;
7990 DRM_DEBUG_KMS("%d display pipe%s available.\n",
7991 dev_priv->num_pipe, dev_priv->num_pipe > 1 ? "s" : "");
7993 for (i = 0; i < dev_priv->num_pipe; i++) {
7994 intel_crtc_init(dev, i);
7997 /* Just disable it once at startup */
7998 i915_disable_vga(dev);
7999 intel_setup_outputs(dev);
8001 intel_init_clock_gating(dev);
8003 if (IS_IRONLAKE_M(dev)) {
8004 ironlake_enable_drps(dev);
8005 intel_init_emon(dev);
8008 if (IS_GEN6(dev) || IS_GEN7(dev))
8009 gen6_enable_rps(dev_priv);
8011 INIT_WORK(&dev_priv->idle_work, intel_idle_update);
8012 setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
8013 (unsigned long)dev);
8016 void intel_modeset_gem_init(struct drm_device *dev)
8018 if (IS_IRONLAKE_M(dev))
8019 ironlake_enable_rc6(dev);
8021 intel_setup_overlay(dev);
8024 void intel_modeset_cleanup(struct drm_device *dev)
8026 struct drm_i915_private *dev_priv = dev->dev_private;
8027 struct drm_crtc *crtc;
8028 struct intel_crtc *intel_crtc;
8030 drm_kms_helper_poll_fini(dev);
8031 mutex_lock(&dev->struct_mutex);
8033 intel_unregister_dsm_handler();
8036 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
8037 /* Skip inactive CRTCs */
8041 intel_crtc = to_intel_crtc(crtc);
8042 intel_increase_pllclock(crtc);
8045 if (dev_priv->display.disable_fbc)
8046 dev_priv->display.disable_fbc(dev);
8048 if (IS_IRONLAKE_M(dev))
8049 ironlake_disable_drps(dev);
8050 if (IS_GEN6(dev) || IS_GEN7(dev))
8051 gen6_disable_rps(dev);
8053 if (IS_IRONLAKE_M(dev))
8054 ironlake_disable_rc6(dev);
8056 mutex_unlock(&dev->struct_mutex);
8058 /* Disable the irq before mode object teardown, for the irq might
8059 * enqueue unpin/hotplug work. */
8060 drm_irq_uninstall(dev);
8061 cancel_work_sync(&dev_priv->hotplug_work);
8063 /* Shut off idle work before the crtcs get freed. */
8064 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
8065 intel_crtc = to_intel_crtc(crtc);
8066 del_timer_sync(&intel_crtc->idle_timer);
8068 del_timer_sync(&dev_priv->idle_timer);
8069 cancel_work_sync(&dev_priv->idle_work);
8071 drm_mode_config_cleanup(dev);
8075 * Return which encoder is currently attached for connector.
8077 struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
8079 return &intel_attached_encoder(connector)->base;
8082 void intel_connector_attach_encoder(struct intel_connector *connector,
8083 struct intel_encoder *encoder)
8085 connector->encoder = encoder;
8086 drm_mode_connector_attach_encoder(&connector->base,
8091 * set vga decode state - true == enable VGA decode
8093 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
8095 struct drm_i915_private *dev_priv = dev->dev_private;
8098 pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
8100 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
8102 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
8103 pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);
8107 #ifdef CONFIG_DEBUG_FS
8108 #include <linux/seq_file.h>
8110 struct intel_display_error_state {
8111 struct intel_cursor_error_state {
8118 struct intel_pipe_error_state {
8130 struct intel_plane_error_state {
8141 struct intel_display_error_state *
8142 intel_display_capture_error_state(struct drm_device *dev)
8144 drm_i915_private_t *dev_priv = dev->dev_private;
8145 struct intel_display_error_state *error;
8148 error = kmalloc(sizeof(*error), GFP_ATOMIC);
8152 for (i = 0; i < 2; i++) {
8153 error->cursor[i].control = I915_READ(CURCNTR(i));
8154 error->cursor[i].position = I915_READ(CURPOS(i));
8155 error->cursor[i].base = I915_READ(CURBASE(i));
8157 error->plane[i].control = I915_READ(DSPCNTR(i));
8158 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
8159 error->plane[i].size = I915_READ(DSPSIZE(i));
8160 error->plane[i].pos= I915_READ(DSPPOS(i));
8161 error->plane[i].addr = I915_READ(DSPADDR(i));
8162 if (INTEL_INFO(dev)->gen >= 4) {
8163 error->plane[i].surface = I915_READ(DSPSURF(i));
8164 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
8167 error->pipe[i].conf = I915_READ(PIPECONF(i));
8168 error->pipe[i].source = I915_READ(PIPESRC(i));
8169 error->pipe[i].htotal = I915_READ(HTOTAL(i));
8170 error->pipe[i].hblank = I915_READ(HBLANK(i));
8171 error->pipe[i].hsync = I915_READ(HSYNC(i));
8172 error->pipe[i].vtotal = I915_READ(VTOTAL(i));
8173 error->pipe[i].vblank = I915_READ(VBLANK(i));
8174 error->pipe[i].vsync = I915_READ(VSYNC(i));
8181 intel_display_print_error_state(struct seq_file *m,
8182 struct drm_device *dev,
8183 struct intel_display_error_state *error)
8187 for (i = 0; i < 2; i++) {
8188 seq_printf(m, "Pipe [%d]:\n", i);
8189 seq_printf(m, " CONF: %08x\n", error->pipe[i].conf);
8190 seq_printf(m, " SRC: %08x\n", error->pipe[i].source);
8191 seq_printf(m, " HTOTAL: %08x\n", error->pipe[i].htotal);
8192 seq_printf(m, " HBLANK: %08x\n", error->pipe[i].hblank);
8193 seq_printf(m, " HSYNC: %08x\n", error->pipe[i].hsync);
8194 seq_printf(m, " VTOTAL: %08x\n", error->pipe[i].vtotal);
8195 seq_printf(m, " VBLANK: %08x\n", error->pipe[i].vblank);
8196 seq_printf(m, " VSYNC: %08x\n", error->pipe[i].vsync);
8198 seq_printf(m, "Plane [%d]:\n", i);
8199 seq_printf(m, " CNTR: %08x\n", error->plane[i].control);
8200 seq_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
8201 seq_printf(m, " SIZE: %08x\n", error->plane[i].size);
8202 seq_printf(m, " POS: %08x\n", error->plane[i].pos);
8203 seq_printf(m, " ADDR: %08x\n", error->plane[i].addr);
8204 if (INTEL_INFO(dev)->gen >= 4) {
8205 seq_printf(m, " SURF: %08x\n", error->plane[i].surface);
8206 seq_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
8209 seq_printf(m, "Cursor [%d]:\n", i);
8210 seq_printf(m, " CNTR: %08x\n", error->cursor[i].control);
8211 seq_printf(m, " POS: %08x\n", error->cursor[i].position);
8212 seq_printf(m, " BASE: %08x\n", error->cursor[i].base);