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/cpufreq.h>
28 #include <linux/module.h>
29 #include <linux/input.h>
30 #include <linux/i2c.h>
31 #include <linux/kernel.h>
32 #include <linux/slab.h>
33 #include <linux/vgaarb.h>
34 #include <drm/drm_edid.h>
36 #include "intel_drv.h"
39 #include "i915_trace.h"
40 #include "drm_dp_helper.h"
41 #include "drm_crtc_helper.h"
42 #include <linux/dma_remapping.h>
44 #define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
46 bool intel_pipe_has_type(struct drm_crtc *crtc, int type);
47 static void intel_update_watermarks(struct drm_device *dev);
48 static void intel_increase_pllclock(struct drm_crtc *crtc);
49 static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
72 #define INTEL_P2_NUM 2
73 typedef struct intel_limit intel_limit_t;
75 intel_range_t dot, vco, n, m, m1, m2, p, p1;
77 bool (* find_pll)(const intel_limit_t *, struct drm_crtc *,
78 int, int, intel_clock_t *, intel_clock_t *);
82 #define IRONLAKE_FDI_FREQ 2700000 /* in kHz for mode->clock */
85 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
86 int target, int refclk, intel_clock_t *match_clock,
87 intel_clock_t *best_clock);
89 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
90 int target, int refclk, intel_clock_t *match_clock,
91 intel_clock_t *best_clock);
94 intel_find_pll_g4x_dp(const intel_limit_t *, struct drm_crtc *crtc,
95 int target, int refclk, intel_clock_t *match_clock,
96 intel_clock_t *best_clock);
98 intel_find_pll_ironlake_dp(const intel_limit_t *, struct drm_crtc *crtc,
99 int target, int refclk, intel_clock_t *match_clock,
100 intel_clock_t *best_clock);
102 static inline u32 /* units of 100MHz */
103 intel_fdi_link_freq(struct drm_device *dev)
106 struct drm_i915_private *dev_priv = dev->dev_private;
107 return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
112 static const intel_limit_t intel_limits_i8xx_dvo = {
113 .dot = { .min = 25000, .max = 350000 },
114 .vco = { .min = 930000, .max = 1400000 },
115 .n = { .min = 3, .max = 16 },
116 .m = { .min = 96, .max = 140 },
117 .m1 = { .min = 18, .max = 26 },
118 .m2 = { .min = 6, .max = 16 },
119 .p = { .min = 4, .max = 128 },
120 .p1 = { .min = 2, .max = 33 },
121 .p2 = { .dot_limit = 165000,
122 .p2_slow = 4, .p2_fast = 2 },
123 .find_pll = intel_find_best_PLL,
126 static const intel_limit_t intel_limits_i8xx_lvds = {
127 .dot = { .min = 25000, .max = 350000 },
128 .vco = { .min = 930000, .max = 1400000 },
129 .n = { .min = 3, .max = 16 },
130 .m = { .min = 96, .max = 140 },
131 .m1 = { .min = 18, .max = 26 },
132 .m2 = { .min = 6, .max = 16 },
133 .p = { .min = 4, .max = 128 },
134 .p1 = { .min = 1, .max = 6 },
135 .p2 = { .dot_limit = 165000,
136 .p2_slow = 14, .p2_fast = 7 },
137 .find_pll = intel_find_best_PLL,
140 static const intel_limit_t intel_limits_i9xx_sdvo = {
141 .dot = { .min = 20000, .max = 400000 },
142 .vco = { .min = 1400000, .max = 2800000 },
143 .n = { .min = 1, .max = 6 },
144 .m = { .min = 70, .max = 120 },
145 .m1 = { .min = 10, .max = 22 },
146 .m2 = { .min = 5, .max = 9 },
147 .p = { .min = 5, .max = 80 },
148 .p1 = { .min = 1, .max = 8 },
149 .p2 = { .dot_limit = 200000,
150 .p2_slow = 10, .p2_fast = 5 },
151 .find_pll = intel_find_best_PLL,
154 static const intel_limit_t intel_limits_i9xx_lvds = {
155 .dot = { .min = 20000, .max = 400000 },
156 .vco = { .min = 1400000, .max = 2800000 },
157 .n = { .min = 1, .max = 6 },
158 .m = { .min = 70, .max = 120 },
159 .m1 = { .min = 10, .max = 22 },
160 .m2 = { .min = 5, .max = 9 },
161 .p = { .min = 7, .max = 98 },
162 .p1 = { .min = 1, .max = 8 },
163 .p2 = { .dot_limit = 112000,
164 .p2_slow = 14, .p2_fast = 7 },
165 .find_pll = intel_find_best_PLL,
169 static const intel_limit_t intel_limits_g4x_sdvo = {
170 .dot = { .min = 25000, .max = 270000 },
171 .vco = { .min = 1750000, .max = 3500000},
172 .n = { .min = 1, .max = 4 },
173 .m = { .min = 104, .max = 138 },
174 .m1 = { .min = 17, .max = 23 },
175 .m2 = { .min = 5, .max = 11 },
176 .p = { .min = 10, .max = 30 },
177 .p1 = { .min = 1, .max = 3},
178 .p2 = { .dot_limit = 270000,
182 .find_pll = intel_g4x_find_best_PLL,
185 static const intel_limit_t intel_limits_g4x_hdmi = {
186 .dot = { .min = 22000, .max = 400000 },
187 .vco = { .min = 1750000, .max = 3500000},
188 .n = { .min = 1, .max = 4 },
189 .m = { .min = 104, .max = 138 },
190 .m1 = { .min = 16, .max = 23 },
191 .m2 = { .min = 5, .max = 11 },
192 .p = { .min = 5, .max = 80 },
193 .p1 = { .min = 1, .max = 8},
194 .p2 = { .dot_limit = 165000,
195 .p2_slow = 10, .p2_fast = 5 },
196 .find_pll = intel_g4x_find_best_PLL,
199 static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
200 .dot = { .min = 20000, .max = 115000 },
201 .vco = { .min = 1750000, .max = 3500000 },
202 .n = { .min = 1, .max = 3 },
203 .m = { .min = 104, .max = 138 },
204 .m1 = { .min = 17, .max = 23 },
205 .m2 = { .min = 5, .max = 11 },
206 .p = { .min = 28, .max = 112 },
207 .p1 = { .min = 2, .max = 8 },
208 .p2 = { .dot_limit = 0,
209 .p2_slow = 14, .p2_fast = 14
211 .find_pll = intel_g4x_find_best_PLL,
214 static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
215 .dot = { .min = 80000, .max = 224000 },
216 .vco = { .min = 1750000, .max = 3500000 },
217 .n = { .min = 1, .max = 3 },
218 .m = { .min = 104, .max = 138 },
219 .m1 = { .min = 17, .max = 23 },
220 .m2 = { .min = 5, .max = 11 },
221 .p = { .min = 14, .max = 42 },
222 .p1 = { .min = 2, .max = 6 },
223 .p2 = { .dot_limit = 0,
224 .p2_slow = 7, .p2_fast = 7
226 .find_pll = intel_g4x_find_best_PLL,
229 static const intel_limit_t intel_limits_g4x_display_port = {
230 .dot = { .min = 161670, .max = 227000 },
231 .vco = { .min = 1750000, .max = 3500000},
232 .n = { .min = 1, .max = 2 },
233 .m = { .min = 97, .max = 108 },
234 .m1 = { .min = 0x10, .max = 0x12 },
235 .m2 = { .min = 0x05, .max = 0x06 },
236 .p = { .min = 10, .max = 20 },
237 .p1 = { .min = 1, .max = 2},
238 .p2 = { .dot_limit = 0,
239 .p2_slow = 10, .p2_fast = 10 },
240 .find_pll = intel_find_pll_g4x_dp,
243 static const intel_limit_t intel_limits_pineview_sdvo = {
244 .dot = { .min = 20000, .max = 400000},
245 .vco = { .min = 1700000, .max = 3500000 },
246 /* Pineview's Ncounter is a ring counter */
247 .n = { .min = 3, .max = 6 },
248 .m = { .min = 2, .max = 256 },
249 /* Pineview only has one combined m divider, which we treat as m2. */
250 .m1 = { .min = 0, .max = 0 },
251 .m2 = { .min = 0, .max = 254 },
252 .p = { .min = 5, .max = 80 },
253 .p1 = { .min = 1, .max = 8 },
254 .p2 = { .dot_limit = 200000,
255 .p2_slow = 10, .p2_fast = 5 },
256 .find_pll = intel_find_best_PLL,
259 static const intel_limit_t intel_limits_pineview_lvds = {
260 .dot = { .min = 20000, .max = 400000 },
261 .vco = { .min = 1700000, .max = 3500000 },
262 .n = { .min = 3, .max = 6 },
263 .m = { .min = 2, .max = 256 },
264 .m1 = { .min = 0, .max = 0 },
265 .m2 = { .min = 0, .max = 254 },
266 .p = { .min = 7, .max = 112 },
267 .p1 = { .min = 1, .max = 8 },
268 .p2 = { .dot_limit = 112000,
269 .p2_slow = 14, .p2_fast = 14 },
270 .find_pll = intel_find_best_PLL,
273 /* Ironlake / Sandybridge
275 * We calculate clock using (register_value + 2) for N/M1/M2, so here
276 * the range value for them is (actual_value - 2).
278 static const intel_limit_t intel_limits_ironlake_dac = {
279 .dot = { .min = 25000, .max = 350000 },
280 .vco = { .min = 1760000, .max = 3510000 },
281 .n = { .min = 1, .max = 5 },
282 .m = { .min = 79, .max = 127 },
283 .m1 = { .min = 12, .max = 22 },
284 .m2 = { .min = 5, .max = 9 },
285 .p = { .min = 5, .max = 80 },
286 .p1 = { .min = 1, .max = 8 },
287 .p2 = { .dot_limit = 225000,
288 .p2_slow = 10, .p2_fast = 5 },
289 .find_pll = intel_g4x_find_best_PLL,
292 static const intel_limit_t intel_limits_ironlake_single_lvds = {
293 .dot = { .min = 25000, .max = 350000 },
294 .vco = { .min = 1760000, .max = 3510000 },
295 .n = { .min = 1, .max = 3 },
296 .m = { .min = 79, .max = 118 },
297 .m1 = { .min = 12, .max = 22 },
298 .m2 = { .min = 5, .max = 9 },
299 .p = { .min = 28, .max = 112 },
300 .p1 = { .min = 2, .max = 8 },
301 .p2 = { .dot_limit = 225000,
302 .p2_slow = 14, .p2_fast = 14 },
303 .find_pll = intel_g4x_find_best_PLL,
306 static const intel_limit_t intel_limits_ironlake_dual_lvds = {
307 .dot = { .min = 25000, .max = 350000 },
308 .vco = { .min = 1760000, .max = 3510000 },
309 .n = { .min = 1, .max = 3 },
310 .m = { .min = 79, .max = 127 },
311 .m1 = { .min = 12, .max = 22 },
312 .m2 = { .min = 5, .max = 9 },
313 .p = { .min = 14, .max = 56 },
314 .p1 = { .min = 2, .max = 8 },
315 .p2 = { .dot_limit = 225000,
316 .p2_slow = 7, .p2_fast = 7 },
317 .find_pll = intel_g4x_find_best_PLL,
320 /* LVDS 100mhz refclk limits. */
321 static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
322 .dot = { .min = 25000, .max = 350000 },
323 .vco = { .min = 1760000, .max = 3510000 },
324 .n = { .min = 1, .max = 2 },
325 .m = { .min = 79, .max = 126 },
326 .m1 = { .min = 12, .max = 22 },
327 .m2 = { .min = 5, .max = 9 },
328 .p = { .min = 28, .max = 112 },
329 .p1 = { .min = 2, .max = 8 },
330 .p2 = { .dot_limit = 225000,
331 .p2_slow = 14, .p2_fast = 14 },
332 .find_pll = intel_g4x_find_best_PLL,
335 static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
336 .dot = { .min = 25000, .max = 350000 },
337 .vco = { .min = 1760000, .max = 3510000 },
338 .n = { .min = 1, .max = 3 },
339 .m = { .min = 79, .max = 126 },
340 .m1 = { .min = 12, .max = 22 },
341 .m2 = { .min = 5, .max = 9 },
342 .p = { .min = 14, .max = 42 },
343 .p1 = { .min = 2, .max = 6 },
344 .p2 = { .dot_limit = 225000,
345 .p2_slow = 7, .p2_fast = 7 },
346 .find_pll = intel_g4x_find_best_PLL,
349 static const intel_limit_t intel_limits_ironlake_display_port = {
350 .dot = { .min = 25000, .max = 350000 },
351 .vco = { .min = 1760000, .max = 3510000},
352 .n = { .min = 1, .max = 2 },
353 .m = { .min = 81, .max = 90 },
354 .m1 = { .min = 12, .max = 22 },
355 .m2 = { .min = 5, .max = 9 },
356 .p = { .min = 10, .max = 20 },
357 .p1 = { .min = 1, .max = 2},
358 .p2 = { .dot_limit = 0,
359 .p2_slow = 10, .p2_fast = 10 },
360 .find_pll = intel_find_pll_ironlake_dp,
363 u32 intel_dpio_read(struct drm_i915_private *dev_priv, int reg)
368 spin_lock_irqsave(&dev_priv->dpio_lock, flags);
369 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100)) {
370 DRM_ERROR("DPIO idle wait timed out\n");
374 I915_WRITE(DPIO_REG, reg);
375 I915_WRITE(DPIO_PKT, DPIO_RID | DPIO_OP_READ | DPIO_PORTID |
377 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100)) {
378 DRM_ERROR("DPIO read wait timed out\n");
381 val = I915_READ(DPIO_DATA);
384 spin_unlock_irqrestore(&dev_priv->dpio_lock, flags);
388 static void intel_dpio_write(struct drm_i915_private *dev_priv, int reg,
393 spin_lock_irqsave(&dev_priv->dpio_lock, flags);
394 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100)) {
395 DRM_ERROR("DPIO idle wait timed out\n");
399 I915_WRITE(DPIO_DATA, val);
400 I915_WRITE(DPIO_REG, reg);
401 I915_WRITE(DPIO_PKT, DPIO_RID | DPIO_OP_WRITE | DPIO_PORTID |
403 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100))
404 DRM_ERROR("DPIO write wait timed out\n");
407 spin_unlock_irqrestore(&dev_priv->dpio_lock, flags);
410 static void vlv_init_dpio(struct drm_device *dev)
412 struct drm_i915_private *dev_priv = dev->dev_private;
414 /* Reset the DPIO config */
415 I915_WRITE(DPIO_CTL, 0);
416 POSTING_READ(DPIO_CTL);
417 I915_WRITE(DPIO_CTL, 1);
418 POSTING_READ(DPIO_CTL);
421 static bool is_dual_link_lvds(struct drm_i915_private *dev_priv,
426 /* use the module option value if specified */
427 if (i915_lvds_channel_mode > 0)
428 return i915_lvds_channel_mode == 2;
430 if (dev_priv->lvds_val)
431 val = dev_priv->lvds_val;
433 /* BIOS should set the proper LVDS register value at boot, but
434 * in reality, it doesn't set the value when the lid is closed;
435 * we need to check "the value to be set" in VBT when LVDS
436 * register is uninitialized.
438 val = I915_READ(reg);
439 if (!(val & ~LVDS_DETECTED))
440 val = dev_priv->bios_lvds_val;
441 dev_priv->lvds_val = val;
443 return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP;
446 static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc,
449 struct drm_device *dev = crtc->dev;
450 struct drm_i915_private *dev_priv = dev->dev_private;
451 const intel_limit_t *limit;
453 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
454 if (is_dual_link_lvds(dev_priv, PCH_LVDS)) {
455 /* LVDS dual channel */
456 if (refclk == 100000)
457 limit = &intel_limits_ironlake_dual_lvds_100m;
459 limit = &intel_limits_ironlake_dual_lvds;
461 if (refclk == 100000)
462 limit = &intel_limits_ironlake_single_lvds_100m;
464 limit = &intel_limits_ironlake_single_lvds;
466 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
468 limit = &intel_limits_ironlake_display_port;
470 limit = &intel_limits_ironlake_dac;
475 static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
477 struct drm_device *dev = crtc->dev;
478 struct drm_i915_private *dev_priv = dev->dev_private;
479 const intel_limit_t *limit;
481 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
482 if (is_dual_link_lvds(dev_priv, LVDS))
483 /* LVDS with dual channel */
484 limit = &intel_limits_g4x_dual_channel_lvds;
486 /* LVDS with dual channel */
487 limit = &intel_limits_g4x_single_channel_lvds;
488 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
489 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
490 limit = &intel_limits_g4x_hdmi;
491 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
492 limit = &intel_limits_g4x_sdvo;
493 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
494 limit = &intel_limits_g4x_display_port;
495 } else /* The option is for other outputs */
496 limit = &intel_limits_i9xx_sdvo;
501 static const intel_limit_t *intel_limit(struct drm_crtc *crtc, int refclk)
503 struct drm_device *dev = crtc->dev;
504 const intel_limit_t *limit;
506 if (HAS_PCH_SPLIT(dev))
507 limit = intel_ironlake_limit(crtc, refclk);
508 else if (IS_G4X(dev)) {
509 limit = intel_g4x_limit(crtc);
510 } else if (IS_PINEVIEW(dev)) {
511 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
512 limit = &intel_limits_pineview_lvds;
514 limit = &intel_limits_pineview_sdvo;
515 } else if (!IS_GEN2(dev)) {
516 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
517 limit = &intel_limits_i9xx_lvds;
519 limit = &intel_limits_i9xx_sdvo;
521 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
522 limit = &intel_limits_i8xx_lvds;
524 limit = &intel_limits_i8xx_dvo;
529 /* m1 is reserved as 0 in Pineview, n is a ring counter */
530 static void pineview_clock(int refclk, intel_clock_t *clock)
532 clock->m = clock->m2 + 2;
533 clock->p = clock->p1 * clock->p2;
534 clock->vco = refclk * clock->m / clock->n;
535 clock->dot = clock->vco / clock->p;
538 static void intel_clock(struct drm_device *dev, int refclk, intel_clock_t *clock)
540 if (IS_PINEVIEW(dev)) {
541 pineview_clock(refclk, clock);
544 clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
545 clock->p = clock->p1 * clock->p2;
546 clock->vco = refclk * clock->m / (clock->n + 2);
547 clock->dot = clock->vco / clock->p;
551 * Returns whether any output on the specified pipe is of the specified type
553 bool intel_pipe_has_type(struct drm_crtc *crtc, int type)
555 struct drm_device *dev = crtc->dev;
556 struct drm_mode_config *mode_config = &dev->mode_config;
557 struct intel_encoder *encoder;
559 list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
560 if (encoder->base.crtc == crtc && encoder->type == type)
566 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
568 * Returns whether the given set of divisors are valid for a given refclk with
569 * the given connectors.
572 static bool intel_PLL_is_valid(struct drm_device *dev,
573 const intel_limit_t *limit,
574 const intel_clock_t *clock)
576 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
577 INTELPllInvalid("p1 out of range\n");
578 if (clock->p < limit->p.min || limit->p.max < clock->p)
579 INTELPllInvalid("p out of range\n");
580 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
581 INTELPllInvalid("m2 out of range\n");
582 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
583 INTELPllInvalid("m1 out of range\n");
584 if (clock->m1 <= clock->m2 && !IS_PINEVIEW(dev))
585 INTELPllInvalid("m1 <= m2\n");
586 if (clock->m < limit->m.min || limit->m.max < clock->m)
587 INTELPllInvalid("m out of range\n");
588 if (clock->n < limit->n.min || limit->n.max < clock->n)
589 INTELPllInvalid("n out of range\n");
590 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
591 INTELPllInvalid("vco out of range\n");
592 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
593 * connector, etc., rather than just a single range.
595 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
596 INTELPllInvalid("dot out of range\n");
602 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
603 int target, int refclk, intel_clock_t *match_clock,
604 intel_clock_t *best_clock)
607 struct drm_device *dev = crtc->dev;
608 struct drm_i915_private *dev_priv = dev->dev_private;
612 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
613 (I915_READ(LVDS)) != 0) {
615 * For LVDS, if the panel is on, just rely on its current
616 * settings for dual-channel. We haven't figured out how to
617 * reliably set up different single/dual channel state, if we
620 if (is_dual_link_lvds(dev_priv, LVDS))
621 clock.p2 = limit->p2.p2_fast;
623 clock.p2 = limit->p2.p2_slow;
625 if (target < limit->p2.dot_limit)
626 clock.p2 = limit->p2.p2_slow;
628 clock.p2 = limit->p2.p2_fast;
631 memset(best_clock, 0, sizeof(*best_clock));
633 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
635 for (clock.m2 = limit->m2.min;
636 clock.m2 <= limit->m2.max; clock.m2++) {
637 /* m1 is always 0 in Pineview */
638 if (clock.m2 >= clock.m1 && !IS_PINEVIEW(dev))
640 for (clock.n = limit->n.min;
641 clock.n <= limit->n.max; clock.n++) {
642 for (clock.p1 = limit->p1.min;
643 clock.p1 <= limit->p1.max; clock.p1++) {
646 intel_clock(dev, refclk, &clock);
647 if (!intel_PLL_is_valid(dev, limit,
651 clock.p != match_clock->p)
654 this_err = abs(clock.dot - target);
655 if (this_err < err) {
664 return (err != target);
668 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
669 int target, int refclk, intel_clock_t *match_clock,
670 intel_clock_t *best_clock)
672 struct drm_device *dev = crtc->dev;
673 struct drm_i915_private *dev_priv = dev->dev_private;
677 /* approximately equals target * 0.00585 */
678 int err_most = (target >> 8) + (target >> 9);
681 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
684 if (HAS_PCH_SPLIT(dev))
688 if ((I915_READ(lvds_reg) & LVDS_CLKB_POWER_MASK) ==
690 clock.p2 = limit->p2.p2_fast;
692 clock.p2 = limit->p2.p2_slow;
694 if (target < limit->p2.dot_limit)
695 clock.p2 = limit->p2.p2_slow;
697 clock.p2 = limit->p2.p2_fast;
700 memset(best_clock, 0, sizeof(*best_clock));
701 max_n = limit->n.max;
702 /* based on hardware requirement, prefer smaller n to precision */
703 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
704 /* based on hardware requirement, prefere larger m1,m2 */
705 for (clock.m1 = limit->m1.max;
706 clock.m1 >= limit->m1.min; clock.m1--) {
707 for (clock.m2 = limit->m2.max;
708 clock.m2 >= limit->m2.min; clock.m2--) {
709 for (clock.p1 = limit->p1.max;
710 clock.p1 >= limit->p1.min; clock.p1--) {
713 intel_clock(dev, refclk, &clock);
714 if (!intel_PLL_is_valid(dev, limit,
718 clock.p != match_clock->p)
721 this_err = abs(clock.dot - target);
722 if (this_err < err_most) {
736 intel_find_pll_ironlake_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
737 int target, int refclk, intel_clock_t *match_clock,
738 intel_clock_t *best_clock)
740 struct drm_device *dev = crtc->dev;
743 if (target < 200000) {
756 intel_clock(dev, refclk, &clock);
757 memcpy(best_clock, &clock, sizeof(intel_clock_t));
761 /* DisplayPort has only two frequencies, 162MHz and 270MHz */
763 intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
764 int target, int refclk, intel_clock_t *match_clock,
765 intel_clock_t *best_clock)
768 if (target < 200000) {
781 clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2);
782 clock.p = (clock.p1 * clock.p2);
783 clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p;
785 memcpy(best_clock, &clock, sizeof(intel_clock_t));
790 * intel_wait_for_vblank - wait for vblank on a given pipe
792 * @pipe: pipe to wait for
794 * Wait for vblank to occur on a given pipe. Needed for various bits of
797 void intel_wait_for_vblank(struct drm_device *dev, int pipe)
799 struct drm_i915_private *dev_priv = dev->dev_private;
800 int pipestat_reg = PIPESTAT(pipe);
802 /* Clear existing vblank status. Note this will clear any other
803 * sticky status fields as well.
805 * This races with i915_driver_irq_handler() with the result
806 * that either function could miss a vblank event. Here it is not
807 * fatal, as we will either wait upon the next vblank interrupt or
808 * timeout. Generally speaking intel_wait_for_vblank() is only
809 * called during modeset at which time the GPU should be idle and
810 * should *not* be performing page flips and thus not waiting on
812 * Currently, the result of us stealing a vblank from the irq
813 * handler is that a single frame will be skipped during swapbuffers.
815 I915_WRITE(pipestat_reg,
816 I915_READ(pipestat_reg) | PIPE_VBLANK_INTERRUPT_STATUS);
818 /* Wait for vblank interrupt bit to set */
819 if (wait_for(I915_READ(pipestat_reg) &
820 PIPE_VBLANK_INTERRUPT_STATUS,
822 DRM_DEBUG_KMS("vblank wait timed out\n");
826 * intel_wait_for_pipe_off - wait for pipe to turn off
828 * @pipe: pipe to wait for
830 * After disabling a pipe, we can't wait for vblank in the usual way,
831 * spinning on the vblank interrupt status bit, since we won't actually
832 * see an interrupt when the pipe is disabled.
835 * wait for the pipe register state bit to turn off
838 * wait for the display line value to settle (it usually
839 * ends up stopping at the start of the next frame).
842 void intel_wait_for_pipe_off(struct drm_device *dev, int pipe)
844 struct drm_i915_private *dev_priv = dev->dev_private;
846 if (INTEL_INFO(dev)->gen >= 4) {
847 int reg = PIPECONF(pipe);
849 /* Wait for the Pipe State to go off */
850 if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
852 DRM_DEBUG_KMS("pipe_off wait timed out\n");
855 int reg = PIPEDSL(pipe);
856 unsigned long timeout = jiffies + msecs_to_jiffies(100);
858 /* Wait for the display line to settle */
860 last_line = I915_READ(reg) & DSL_LINEMASK;
862 } while (((I915_READ(reg) & DSL_LINEMASK) != last_line) &&
863 time_after(timeout, jiffies));
864 if (time_after(jiffies, timeout))
865 DRM_DEBUG_KMS("pipe_off wait timed out\n");
869 static const char *state_string(bool enabled)
871 return enabled ? "on" : "off";
874 /* Only for pre-ILK configs */
875 static void assert_pll(struct drm_i915_private *dev_priv,
876 enum pipe pipe, bool state)
883 val = I915_READ(reg);
884 cur_state = !!(val & DPLL_VCO_ENABLE);
885 WARN(cur_state != state,
886 "PLL state assertion failure (expected %s, current %s)\n",
887 state_string(state), state_string(cur_state));
889 #define assert_pll_enabled(d, p) assert_pll(d, p, true)
890 #define assert_pll_disabled(d, p) assert_pll(d, p, false)
893 static void assert_pch_pll(struct drm_i915_private *dev_priv,
894 enum pipe pipe, bool state)
900 if (HAS_PCH_CPT(dev_priv->dev)) {
903 pch_dpll = I915_READ(PCH_DPLL_SEL);
905 /* Make sure the selected PLL is enabled to the transcoder */
906 WARN(!((pch_dpll >> (4 * pipe)) & 8),
907 "transcoder %d PLL not enabled\n", pipe);
909 /* Convert the transcoder pipe number to a pll pipe number */
910 pipe = (pch_dpll >> (4 * pipe)) & 1;
913 reg = PCH_DPLL(pipe);
914 val = I915_READ(reg);
915 cur_state = !!(val & DPLL_VCO_ENABLE);
916 WARN(cur_state != state,
917 "PCH PLL state assertion failure (expected %s, current %s)\n",
918 state_string(state), state_string(cur_state));
920 #define assert_pch_pll_enabled(d, p) assert_pch_pll(d, p, true)
921 #define assert_pch_pll_disabled(d, p) assert_pch_pll(d, p, false)
923 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
924 enum pipe pipe, bool state)
930 reg = FDI_TX_CTL(pipe);
931 val = I915_READ(reg);
932 cur_state = !!(val & FDI_TX_ENABLE);
933 WARN(cur_state != state,
934 "FDI TX state assertion failure (expected %s, current %s)\n",
935 state_string(state), state_string(cur_state));
937 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
938 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
940 static void assert_fdi_rx(struct drm_i915_private *dev_priv,
941 enum pipe pipe, bool state)
947 reg = FDI_RX_CTL(pipe);
948 val = I915_READ(reg);
949 cur_state = !!(val & FDI_RX_ENABLE);
950 WARN(cur_state != state,
951 "FDI RX state assertion failure (expected %s, current %s)\n",
952 state_string(state), state_string(cur_state));
954 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
955 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
957 static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
963 /* ILK FDI PLL is always enabled */
964 if (dev_priv->info->gen == 5)
967 reg = FDI_TX_CTL(pipe);
968 val = I915_READ(reg);
969 WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
972 static void assert_fdi_rx_pll_enabled(struct drm_i915_private *dev_priv,
978 reg = FDI_RX_CTL(pipe);
979 val = I915_READ(reg);
980 WARN(!(val & FDI_RX_PLL_ENABLE), "FDI RX PLL assertion failure, should be active but is disabled\n");
983 static void assert_panel_unlocked(struct drm_i915_private *dev_priv,
986 int pp_reg, lvds_reg;
988 enum pipe panel_pipe = PIPE_A;
991 if (HAS_PCH_SPLIT(dev_priv->dev)) {
992 pp_reg = PCH_PP_CONTROL;
999 val = I915_READ(pp_reg);
1000 if (!(val & PANEL_POWER_ON) ||
1001 ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS))
1004 if (I915_READ(lvds_reg) & LVDS_PIPEB_SELECT)
1005 panel_pipe = PIPE_B;
1007 WARN(panel_pipe == pipe && locked,
1008 "panel assertion failure, pipe %c regs locked\n",
1012 void assert_pipe(struct drm_i915_private *dev_priv,
1013 enum pipe pipe, bool state)
1019 /* if we need the pipe A quirk it must be always on */
1020 if (pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE)
1023 reg = PIPECONF(pipe);
1024 val = I915_READ(reg);
1025 cur_state = !!(val & PIPECONF_ENABLE);
1026 WARN(cur_state != state,
1027 "pipe %c assertion failure (expected %s, current %s)\n",
1028 pipe_name(pipe), state_string(state), state_string(cur_state));
1031 static void assert_plane(struct drm_i915_private *dev_priv,
1032 enum plane plane, bool state)
1038 reg = DSPCNTR(plane);
1039 val = I915_READ(reg);
1040 cur_state = !!(val & DISPLAY_PLANE_ENABLE);
1041 WARN(cur_state != state,
1042 "plane %c assertion failure (expected %s, current %s)\n",
1043 plane_name(plane), state_string(state), state_string(cur_state));
1046 #define assert_plane_enabled(d, p) assert_plane(d, p, true)
1047 #define assert_plane_disabled(d, p) assert_plane(d, p, false)
1049 static void assert_planes_disabled(struct drm_i915_private *dev_priv,
1056 /* Planes are fixed to pipes on ILK+ */
1057 if (HAS_PCH_SPLIT(dev_priv->dev)) {
1058 reg = DSPCNTR(pipe);
1059 val = I915_READ(reg);
1060 WARN((val & DISPLAY_PLANE_ENABLE),
1061 "plane %c assertion failure, should be disabled but not\n",
1066 /* Need to check both planes against the pipe */
1067 for (i = 0; i < 2; i++) {
1069 val = I915_READ(reg);
1070 cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
1071 DISPPLANE_SEL_PIPE_SHIFT;
1072 WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
1073 "plane %c assertion failure, should be off on pipe %c but is still active\n",
1074 plane_name(i), pipe_name(pipe));
1078 static void assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
1083 val = I915_READ(PCH_DREF_CONTROL);
1084 enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
1085 DREF_SUPERSPREAD_SOURCE_MASK));
1086 WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
1089 static void assert_transcoder_disabled(struct drm_i915_private *dev_priv,
1096 reg = TRANSCONF(pipe);
1097 val = I915_READ(reg);
1098 enabled = !!(val & TRANS_ENABLE);
1100 "transcoder assertion failed, should be off on pipe %c but is still active\n",
1104 static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
1105 enum pipe pipe, u32 port_sel, u32 val)
1107 if ((val & DP_PORT_EN) == 0)
1110 if (HAS_PCH_CPT(dev_priv->dev)) {
1111 u32 trans_dp_ctl_reg = TRANS_DP_CTL(pipe);
1112 u32 trans_dp_ctl = I915_READ(trans_dp_ctl_reg);
1113 if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
1116 if ((val & DP_PIPE_MASK) != (pipe << 30))
1122 static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
1123 enum pipe pipe, u32 val)
1125 if ((val & PORT_ENABLE) == 0)
1128 if (HAS_PCH_CPT(dev_priv->dev)) {
1129 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1132 if ((val & TRANSCODER_MASK) != TRANSCODER(pipe))
1138 static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
1139 enum pipe pipe, u32 val)
1141 if ((val & LVDS_PORT_EN) == 0)
1144 if (HAS_PCH_CPT(dev_priv->dev)) {
1145 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1148 if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
1154 static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
1155 enum pipe pipe, u32 val)
1157 if ((val & ADPA_DAC_ENABLE) == 0)
1159 if (HAS_PCH_CPT(dev_priv->dev)) {
1160 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1163 if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
1169 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
1170 enum pipe pipe, int reg, u32 port_sel)
1172 u32 val = I915_READ(reg);
1173 WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
1174 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
1175 reg, pipe_name(pipe));
1178 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1179 enum pipe pipe, int reg)
1181 u32 val = I915_READ(reg);
1182 WARN(hdmi_pipe_enabled(dev_priv, val, pipe),
1183 "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
1184 reg, pipe_name(pipe));
1187 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1193 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1194 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1195 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1198 val = I915_READ(reg);
1199 WARN(adpa_pipe_enabled(dev_priv, val, pipe),
1200 "PCH VGA enabled on transcoder %c, should be disabled\n",
1204 val = I915_READ(reg);
1205 WARN(lvds_pipe_enabled(dev_priv, val, pipe),
1206 "PCH LVDS enabled on transcoder %c, should be disabled\n",
1209 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIB);
1210 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIC);
1211 assert_pch_hdmi_disabled(dev_priv, pipe, HDMID);
1215 * intel_enable_pll - enable a PLL
1216 * @dev_priv: i915 private structure
1217 * @pipe: pipe PLL to enable
1219 * Enable @pipe's PLL so we can start pumping pixels from a plane. Check to
1220 * make sure the PLL reg is writable first though, since the panel write
1221 * protect mechanism may be enabled.
1223 * Note! This is for pre-ILK only.
1225 static void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1230 /* No really, not for ILK+ */
1231 BUG_ON(dev_priv->info->gen >= 5);
1233 /* PLL is protected by panel, make sure we can write it */
1234 if (IS_MOBILE(dev_priv->dev) && !IS_I830(dev_priv->dev))
1235 assert_panel_unlocked(dev_priv, pipe);
1238 val = I915_READ(reg);
1239 val |= DPLL_VCO_ENABLE;
1241 /* We do this three times for luck */
1242 I915_WRITE(reg, val);
1244 udelay(150); /* wait for warmup */
1245 I915_WRITE(reg, val);
1247 udelay(150); /* wait for warmup */
1248 I915_WRITE(reg, val);
1250 udelay(150); /* wait for warmup */
1254 * intel_disable_pll - disable a PLL
1255 * @dev_priv: i915 private structure
1256 * @pipe: pipe PLL to disable
1258 * Disable the PLL for @pipe, making sure the pipe is off first.
1260 * Note! This is for pre-ILK only.
1262 static void intel_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1267 /* Don't disable pipe A or pipe A PLLs if needed */
1268 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1271 /* Make sure the pipe isn't still relying on us */
1272 assert_pipe_disabled(dev_priv, pipe);
1275 val = I915_READ(reg);
1276 val &= ~DPLL_VCO_ENABLE;
1277 I915_WRITE(reg, val);
1282 * intel_enable_pch_pll - enable PCH PLL
1283 * @dev_priv: i915 private structure
1284 * @pipe: pipe PLL to enable
1286 * The PCH PLL needs to be enabled before the PCH transcoder, since it
1287 * drives the transcoder clock.
1289 static void intel_enable_pch_pll(struct drm_i915_private *dev_priv,
1298 /* PCH only available on ILK+ */
1299 BUG_ON(dev_priv->info->gen < 5);
1301 /* PCH refclock must be enabled first */
1302 assert_pch_refclk_enabled(dev_priv);
1304 reg = PCH_DPLL(pipe);
1305 val = I915_READ(reg);
1306 val |= DPLL_VCO_ENABLE;
1307 I915_WRITE(reg, val);
1312 static void intel_disable_pch_pll(struct drm_i915_private *dev_priv,
1316 u32 val, pll_mask = TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL,
1317 pll_sel = TRANSC_DPLL_ENABLE;
1322 /* PCH only available on ILK+ */
1323 BUG_ON(dev_priv->info->gen < 5);
1325 /* Make sure transcoder isn't still depending on us */
1326 assert_transcoder_disabled(dev_priv, pipe);
1329 pll_sel |= TRANSC_DPLLA_SEL;
1331 pll_sel |= TRANSC_DPLLB_SEL;
1334 if ((I915_READ(PCH_DPLL_SEL) & pll_mask) == pll_sel)
1337 reg = PCH_DPLL(pipe);
1338 val = I915_READ(reg);
1339 val &= ~DPLL_VCO_ENABLE;
1340 I915_WRITE(reg, val);
1345 static void intel_enable_transcoder(struct drm_i915_private *dev_priv,
1349 u32 val, pipeconf_val;
1350 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1352 /* PCH only available on ILK+ */
1353 BUG_ON(dev_priv->info->gen < 5);
1355 /* Make sure PCH DPLL is enabled */
1356 assert_pch_pll_enabled(dev_priv, pipe);
1358 /* FDI must be feeding us bits for PCH ports */
1359 assert_fdi_tx_enabled(dev_priv, pipe);
1360 assert_fdi_rx_enabled(dev_priv, pipe);
1362 reg = TRANSCONF(pipe);
1363 val = I915_READ(reg);
1364 pipeconf_val = I915_READ(PIPECONF(pipe));
1366 if (HAS_PCH_IBX(dev_priv->dev)) {
1368 * make the BPC in transcoder be consistent with
1369 * that in pipeconf reg.
1371 val &= ~PIPE_BPC_MASK;
1372 val |= pipeconf_val & PIPE_BPC_MASK;
1375 val &= ~TRANS_INTERLACE_MASK;
1376 if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
1377 if (HAS_PCH_IBX(dev_priv->dev) &&
1378 intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO))
1379 val |= TRANS_LEGACY_INTERLACED_ILK;
1381 val |= TRANS_INTERLACED;
1383 val |= TRANS_PROGRESSIVE;
1385 I915_WRITE(reg, val | TRANS_ENABLE);
1386 if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
1387 DRM_ERROR("failed to enable transcoder %d\n", pipe);
1390 static void intel_disable_transcoder(struct drm_i915_private *dev_priv,
1396 /* FDI relies on the transcoder */
1397 assert_fdi_tx_disabled(dev_priv, pipe);
1398 assert_fdi_rx_disabled(dev_priv, pipe);
1400 /* Ports must be off as well */
1401 assert_pch_ports_disabled(dev_priv, pipe);
1403 reg = TRANSCONF(pipe);
1404 val = I915_READ(reg);
1405 val &= ~TRANS_ENABLE;
1406 I915_WRITE(reg, val);
1407 /* wait for PCH transcoder off, transcoder state */
1408 if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
1409 DRM_ERROR("failed to disable transcoder %d\n", pipe);
1413 * intel_enable_pipe - enable a pipe, asserting requirements
1414 * @dev_priv: i915 private structure
1415 * @pipe: pipe to enable
1416 * @pch_port: on ILK+, is this pipe driving a PCH port or not
1418 * Enable @pipe, making sure that various hardware specific requirements
1419 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
1421 * @pipe should be %PIPE_A or %PIPE_B.
1423 * Will wait until the pipe is actually running (i.e. first vblank) before
1426 static void intel_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
1433 * A pipe without a PLL won't actually be able to drive bits from
1434 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
1437 if (!HAS_PCH_SPLIT(dev_priv->dev))
1438 assert_pll_enabled(dev_priv, pipe);
1441 /* if driving the PCH, we need FDI enabled */
1442 assert_fdi_rx_pll_enabled(dev_priv, pipe);
1443 assert_fdi_tx_pll_enabled(dev_priv, pipe);
1445 /* FIXME: assert CPU port conditions for SNB+ */
1448 reg = PIPECONF(pipe);
1449 val = I915_READ(reg);
1450 if (val & PIPECONF_ENABLE)
1453 I915_WRITE(reg, val | PIPECONF_ENABLE);
1454 intel_wait_for_vblank(dev_priv->dev, pipe);
1458 * intel_disable_pipe - disable a pipe, asserting requirements
1459 * @dev_priv: i915 private structure
1460 * @pipe: pipe to disable
1462 * Disable @pipe, making sure that various hardware specific requirements
1463 * are met, if applicable, e.g. plane disabled, panel fitter off, etc.
1465 * @pipe should be %PIPE_A or %PIPE_B.
1467 * Will wait until the pipe has shut down before returning.
1469 static void intel_disable_pipe(struct drm_i915_private *dev_priv,
1476 * Make sure planes won't keep trying to pump pixels to us,
1477 * or we might hang the display.
1479 assert_planes_disabled(dev_priv, pipe);
1481 /* Don't disable pipe A or pipe A PLLs if needed */
1482 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1485 reg = PIPECONF(pipe);
1486 val = I915_READ(reg);
1487 if ((val & PIPECONF_ENABLE) == 0)
1490 I915_WRITE(reg, val & ~PIPECONF_ENABLE);
1491 intel_wait_for_pipe_off(dev_priv->dev, pipe);
1495 * Plane regs are double buffered, going from enabled->disabled needs a
1496 * trigger in order to latch. The display address reg provides this.
1498 static void intel_flush_display_plane(struct drm_i915_private *dev_priv,
1501 I915_WRITE(DSPADDR(plane), I915_READ(DSPADDR(plane)));
1502 I915_WRITE(DSPSURF(plane), I915_READ(DSPSURF(plane)));
1506 * intel_enable_plane - enable a display plane on a given pipe
1507 * @dev_priv: i915 private structure
1508 * @plane: plane to enable
1509 * @pipe: pipe being fed
1511 * Enable @plane on @pipe, making sure that @pipe is running first.
1513 static void intel_enable_plane(struct drm_i915_private *dev_priv,
1514 enum plane plane, enum pipe pipe)
1519 /* If the pipe isn't enabled, we can't pump pixels and may hang */
1520 assert_pipe_enabled(dev_priv, pipe);
1522 reg = DSPCNTR(plane);
1523 val = I915_READ(reg);
1524 if (val & DISPLAY_PLANE_ENABLE)
1527 I915_WRITE(reg, val | DISPLAY_PLANE_ENABLE);
1528 intel_flush_display_plane(dev_priv, plane);
1529 intel_wait_for_vblank(dev_priv->dev, pipe);
1533 * intel_disable_plane - disable a display plane
1534 * @dev_priv: i915 private structure
1535 * @plane: plane to disable
1536 * @pipe: pipe consuming the data
1538 * Disable @plane; should be an independent operation.
1540 static void intel_disable_plane(struct drm_i915_private *dev_priv,
1541 enum plane plane, enum pipe pipe)
1546 reg = DSPCNTR(plane);
1547 val = I915_READ(reg);
1548 if ((val & DISPLAY_PLANE_ENABLE) == 0)
1551 I915_WRITE(reg, val & ~DISPLAY_PLANE_ENABLE);
1552 intel_flush_display_plane(dev_priv, plane);
1553 intel_wait_for_vblank(dev_priv->dev, pipe);
1556 static void disable_pch_dp(struct drm_i915_private *dev_priv,
1557 enum pipe pipe, int reg, u32 port_sel)
1559 u32 val = I915_READ(reg);
1560 if (dp_pipe_enabled(dev_priv, pipe, port_sel, val)) {
1561 DRM_DEBUG_KMS("Disabling pch dp %x on pipe %d\n", reg, pipe);
1562 I915_WRITE(reg, val & ~DP_PORT_EN);
1566 static void disable_pch_hdmi(struct drm_i915_private *dev_priv,
1567 enum pipe pipe, int reg)
1569 u32 val = I915_READ(reg);
1570 if (hdmi_pipe_enabled(dev_priv, val, pipe)) {
1571 DRM_DEBUG_KMS("Disabling pch HDMI %x on pipe %d\n",
1573 I915_WRITE(reg, val & ~PORT_ENABLE);
1577 /* Disable any ports connected to this transcoder */
1578 static void intel_disable_pch_ports(struct drm_i915_private *dev_priv,
1583 val = I915_READ(PCH_PP_CONTROL);
1584 I915_WRITE(PCH_PP_CONTROL, val | PANEL_UNLOCK_REGS);
1586 disable_pch_dp(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1587 disable_pch_dp(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1588 disable_pch_dp(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1591 val = I915_READ(reg);
1592 if (adpa_pipe_enabled(dev_priv, val, pipe))
1593 I915_WRITE(reg, val & ~ADPA_DAC_ENABLE);
1596 val = I915_READ(reg);
1597 if (lvds_pipe_enabled(dev_priv, val, pipe)) {
1598 DRM_DEBUG_KMS("disable lvds on pipe %d val 0x%08x\n", pipe, val);
1599 I915_WRITE(reg, val & ~LVDS_PORT_EN);
1604 disable_pch_hdmi(dev_priv, pipe, HDMIB);
1605 disable_pch_hdmi(dev_priv, pipe, HDMIC);
1606 disable_pch_hdmi(dev_priv, pipe, HDMID);
1609 static void i8xx_disable_fbc(struct drm_device *dev)
1611 struct drm_i915_private *dev_priv = dev->dev_private;
1614 /* Disable compression */
1615 fbc_ctl = I915_READ(FBC_CONTROL);
1616 if ((fbc_ctl & FBC_CTL_EN) == 0)
1619 fbc_ctl &= ~FBC_CTL_EN;
1620 I915_WRITE(FBC_CONTROL, fbc_ctl);
1622 /* Wait for compressing bit to clear */
1623 if (wait_for((I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING) == 0, 10)) {
1624 DRM_DEBUG_KMS("FBC idle timed out\n");
1628 DRM_DEBUG_KMS("disabled FBC\n");
1631 static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1633 struct drm_device *dev = crtc->dev;
1634 struct drm_i915_private *dev_priv = dev->dev_private;
1635 struct drm_framebuffer *fb = crtc->fb;
1636 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1637 struct drm_i915_gem_object *obj = intel_fb->obj;
1638 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1641 u32 fbc_ctl, fbc_ctl2;
1643 cfb_pitch = dev_priv->cfb_size / FBC_LL_SIZE;
1644 if (fb->pitches[0] < cfb_pitch)
1645 cfb_pitch = fb->pitches[0];
1647 /* FBC_CTL wants 64B units */
1648 cfb_pitch = (cfb_pitch / 64) - 1;
1649 plane = intel_crtc->plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB;
1651 /* Clear old tags */
1652 for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++)
1653 I915_WRITE(FBC_TAG + (i * 4), 0);
1656 fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | FBC_CTL_CPU_FENCE;
1658 I915_WRITE(FBC_CONTROL2, fbc_ctl2);
1659 I915_WRITE(FBC_FENCE_OFF, crtc->y);
1662 fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC;
1664 fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */
1665 fbc_ctl |= (cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;
1666 fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT;
1667 fbc_ctl |= obj->fence_reg;
1668 I915_WRITE(FBC_CONTROL, fbc_ctl);
1670 DRM_DEBUG_KMS("enabled FBC, pitch %d, yoff %d, plane %d, ",
1671 cfb_pitch, crtc->y, intel_crtc->plane);
1674 static bool i8xx_fbc_enabled(struct drm_device *dev)
1676 struct drm_i915_private *dev_priv = dev->dev_private;
1678 return I915_READ(FBC_CONTROL) & FBC_CTL_EN;
1681 static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1683 struct drm_device *dev = crtc->dev;
1684 struct drm_i915_private *dev_priv = dev->dev_private;
1685 struct drm_framebuffer *fb = crtc->fb;
1686 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1687 struct drm_i915_gem_object *obj = intel_fb->obj;
1688 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1689 int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
1690 unsigned long stall_watermark = 200;
1693 dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X;
1694 dpfc_ctl |= DPFC_CTL_FENCE_EN | obj->fence_reg;
1695 I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY);
1697 I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
1698 (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
1699 (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
1700 I915_WRITE(DPFC_FENCE_YOFF, crtc->y);
1703 I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN);
1705 DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
1708 static void g4x_disable_fbc(struct drm_device *dev)
1710 struct drm_i915_private *dev_priv = dev->dev_private;
1713 /* Disable compression */
1714 dpfc_ctl = I915_READ(DPFC_CONTROL);
1715 if (dpfc_ctl & DPFC_CTL_EN) {
1716 dpfc_ctl &= ~DPFC_CTL_EN;
1717 I915_WRITE(DPFC_CONTROL, dpfc_ctl);
1719 DRM_DEBUG_KMS("disabled FBC\n");
1723 static bool g4x_fbc_enabled(struct drm_device *dev)
1725 struct drm_i915_private *dev_priv = dev->dev_private;
1727 return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
1730 static void sandybridge_blit_fbc_update(struct drm_device *dev)
1732 struct drm_i915_private *dev_priv = dev->dev_private;
1735 /* Make sure blitter notifies FBC of writes */
1736 gen6_gt_force_wake_get(dev_priv);
1737 blt_ecoskpd = I915_READ(GEN6_BLITTER_ECOSKPD);
1738 blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY <<
1739 GEN6_BLITTER_LOCK_SHIFT;
1740 I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
1741 blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY;
1742 I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
1743 blt_ecoskpd &= ~(GEN6_BLITTER_FBC_NOTIFY <<
1744 GEN6_BLITTER_LOCK_SHIFT);
1745 I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
1746 POSTING_READ(GEN6_BLITTER_ECOSKPD);
1747 gen6_gt_force_wake_put(dev_priv);
1750 static void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1752 struct drm_device *dev = crtc->dev;
1753 struct drm_i915_private *dev_priv = dev->dev_private;
1754 struct drm_framebuffer *fb = crtc->fb;
1755 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1756 struct drm_i915_gem_object *obj = intel_fb->obj;
1757 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1758 int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
1759 unsigned long stall_watermark = 200;
1762 dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
1763 dpfc_ctl &= DPFC_RESERVED;
1764 dpfc_ctl |= (plane | DPFC_CTL_LIMIT_1X);
1765 /* Set persistent mode for front-buffer rendering, ala X. */
1766 dpfc_ctl |= DPFC_CTL_PERSISTENT_MODE;
1767 dpfc_ctl |= (DPFC_CTL_FENCE_EN | obj->fence_reg);
1768 I915_WRITE(ILK_DPFC_CHICKEN, DPFC_HT_MODIFY);
1770 I915_WRITE(ILK_DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
1771 (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
1772 (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
1773 I915_WRITE(ILK_DPFC_FENCE_YOFF, crtc->y);
1774 I915_WRITE(ILK_FBC_RT_BASE, obj->gtt_offset | ILK_FBC_RT_VALID);
1776 I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl | DPFC_CTL_EN);
1779 I915_WRITE(SNB_DPFC_CTL_SA,
1780 SNB_CPU_FENCE_ENABLE | obj->fence_reg);
1781 I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y);
1782 sandybridge_blit_fbc_update(dev);
1785 DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
1788 static void ironlake_disable_fbc(struct drm_device *dev)
1790 struct drm_i915_private *dev_priv = dev->dev_private;
1793 /* Disable compression */
1794 dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
1795 if (dpfc_ctl & DPFC_CTL_EN) {
1796 dpfc_ctl &= ~DPFC_CTL_EN;
1797 I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl);
1799 DRM_DEBUG_KMS("disabled FBC\n");
1803 static bool ironlake_fbc_enabled(struct drm_device *dev)
1805 struct drm_i915_private *dev_priv = dev->dev_private;
1807 return I915_READ(ILK_DPFC_CONTROL) & DPFC_CTL_EN;
1810 bool intel_fbc_enabled(struct drm_device *dev)
1812 struct drm_i915_private *dev_priv = dev->dev_private;
1814 if (!dev_priv->display.fbc_enabled)
1817 return dev_priv->display.fbc_enabled(dev);
1820 static void intel_fbc_work_fn(struct work_struct *__work)
1822 struct intel_fbc_work *work =
1823 container_of(to_delayed_work(__work),
1824 struct intel_fbc_work, work);
1825 struct drm_device *dev = work->crtc->dev;
1826 struct drm_i915_private *dev_priv = dev->dev_private;
1828 mutex_lock(&dev->struct_mutex);
1829 if (work == dev_priv->fbc_work) {
1830 /* Double check that we haven't switched fb without cancelling
1833 if (work->crtc->fb == work->fb) {
1834 dev_priv->display.enable_fbc(work->crtc,
1837 dev_priv->cfb_plane = to_intel_crtc(work->crtc)->plane;
1838 dev_priv->cfb_fb = work->crtc->fb->base.id;
1839 dev_priv->cfb_y = work->crtc->y;
1842 dev_priv->fbc_work = NULL;
1844 mutex_unlock(&dev->struct_mutex);
1849 static void intel_cancel_fbc_work(struct drm_i915_private *dev_priv)
1851 if (dev_priv->fbc_work == NULL)
1854 DRM_DEBUG_KMS("cancelling pending FBC enable\n");
1856 /* Synchronisation is provided by struct_mutex and checking of
1857 * dev_priv->fbc_work, so we can perform the cancellation
1858 * entirely asynchronously.
1860 if (cancel_delayed_work(&dev_priv->fbc_work->work))
1861 /* tasklet was killed before being run, clean up */
1862 kfree(dev_priv->fbc_work);
1864 /* Mark the work as no longer wanted so that if it does
1865 * wake-up (because the work was already running and waiting
1866 * for our mutex), it will discover that is no longer
1869 dev_priv->fbc_work = NULL;
1872 static void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1874 struct intel_fbc_work *work;
1875 struct drm_device *dev = crtc->dev;
1876 struct drm_i915_private *dev_priv = dev->dev_private;
1878 if (!dev_priv->display.enable_fbc)
1881 intel_cancel_fbc_work(dev_priv);
1883 work = kzalloc(sizeof *work, GFP_KERNEL);
1885 dev_priv->display.enable_fbc(crtc, interval);
1890 work->fb = crtc->fb;
1891 work->interval = interval;
1892 INIT_DELAYED_WORK(&work->work, intel_fbc_work_fn);
1894 dev_priv->fbc_work = work;
1896 DRM_DEBUG_KMS("scheduling delayed FBC enable\n");
1898 /* Delay the actual enabling to let pageflipping cease and the
1899 * display to settle before starting the compression. Note that
1900 * this delay also serves a second purpose: it allows for a
1901 * vblank to pass after disabling the FBC before we attempt
1902 * to modify the control registers.
1904 * A more complicated solution would involve tracking vblanks
1905 * following the termination of the page-flipping sequence
1906 * and indeed performing the enable as a co-routine and not
1907 * waiting synchronously upon the vblank.
1909 schedule_delayed_work(&work->work, msecs_to_jiffies(50));
1912 void intel_disable_fbc(struct drm_device *dev)
1914 struct drm_i915_private *dev_priv = dev->dev_private;
1916 intel_cancel_fbc_work(dev_priv);
1918 if (!dev_priv->display.disable_fbc)
1921 dev_priv->display.disable_fbc(dev);
1922 dev_priv->cfb_plane = -1;
1926 * intel_update_fbc - enable/disable FBC as needed
1927 * @dev: the drm_device
1929 * Set up the framebuffer compression hardware at mode set time. We
1930 * enable it if possible:
1931 * - plane A only (on pre-965)
1932 * - no pixel mulitply/line duplication
1933 * - no alpha buffer discard
1935 * - framebuffer <= 2048 in width, 1536 in height
1937 * We can't assume that any compression will take place (worst case),
1938 * so the compressed buffer has to be the same size as the uncompressed
1939 * one. It also must reside (along with the line length buffer) in
1942 * We need to enable/disable FBC on a global basis.
1944 static void intel_update_fbc(struct drm_device *dev)
1946 struct drm_i915_private *dev_priv = dev->dev_private;
1947 struct drm_crtc *crtc = NULL, *tmp_crtc;
1948 struct intel_crtc *intel_crtc;
1949 struct drm_framebuffer *fb;
1950 struct intel_framebuffer *intel_fb;
1951 struct drm_i915_gem_object *obj;
1954 DRM_DEBUG_KMS("\n");
1956 if (!i915_powersave)
1959 if (!I915_HAS_FBC(dev))
1963 * If FBC is already on, we just have to verify that we can
1964 * keep it that way...
1965 * Need to disable if:
1966 * - more than one pipe is active
1967 * - changing FBC params (stride, fence, mode)
1968 * - new fb is too large to fit in compressed buffer
1969 * - going to an unsupported config (interlace, pixel multiply, etc.)
1971 list_for_each_entry(tmp_crtc, &dev->mode_config.crtc_list, head) {
1972 if (tmp_crtc->enabled && tmp_crtc->fb) {
1974 DRM_DEBUG_KMS("more than one pipe active, disabling compression\n");
1975 dev_priv->no_fbc_reason = FBC_MULTIPLE_PIPES;
1982 if (!crtc || crtc->fb == NULL) {
1983 DRM_DEBUG_KMS("no output, disabling\n");
1984 dev_priv->no_fbc_reason = FBC_NO_OUTPUT;
1988 intel_crtc = to_intel_crtc(crtc);
1990 intel_fb = to_intel_framebuffer(fb);
1991 obj = intel_fb->obj;
1993 enable_fbc = i915_enable_fbc;
1994 if (enable_fbc < 0) {
1995 DRM_DEBUG_KMS("fbc set to per-chip default\n");
1997 if (INTEL_INFO(dev)->gen <= 6)
2001 DRM_DEBUG_KMS("fbc disabled per module param\n");
2002 dev_priv->no_fbc_reason = FBC_MODULE_PARAM;
2005 if (intel_fb->obj->base.size > dev_priv->cfb_size) {
2006 DRM_DEBUG_KMS("framebuffer too large, disabling "
2008 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
2011 if ((crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) ||
2012 (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)) {
2013 DRM_DEBUG_KMS("mode incompatible with compression, "
2015 dev_priv->no_fbc_reason = FBC_UNSUPPORTED_MODE;
2018 if ((crtc->mode.hdisplay > 2048) ||
2019 (crtc->mode.vdisplay > 1536)) {
2020 DRM_DEBUG_KMS("mode too large for compression, disabling\n");
2021 dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE;
2024 if ((IS_I915GM(dev) || IS_I945GM(dev)) && intel_crtc->plane != 0) {
2025 DRM_DEBUG_KMS("plane not 0, disabling compression\n");
2026 dev_priv->no_fbc_reason = FBC_BAD_PLANE;
2030 /* The use of a CPU fence is mandatory in order to detect writes
2031 * by the CPU to the scanout and trigger updates to the FBC.
2033 if (obj->tiling_mode != I915_TILING_X ||
2034 obj->fence_reg == I915_FENCE_REG_NONE) {
2035 DRM_DEBUG_KMS("framebuffer not tiled or fenced, disabling compression\n");
2036 dev_priv->no_fbc_reason = FBC_NOT_TILED;
2040 /* If the kernel debugger is active, always disable compression */
2041 if (in_dbg_master())
2044 /* If the scanout has not changed, don't modify the FBC settings.
2045 * Note that we make the fundamental assumption that the fb->obj
2046 * cannot be unpinned (and have its GTT offset and fence revoked)
2047 * without first being decoupled from the scanout and FBC disabled.
2049 if (dev_priv->cfb_plane == intel_crtc->plane &&
2050 dev_priv->cfb_fb == fb->base.id &&
2051 dev_priv->cfb_y == crtc->y)
2054 if (intel_fbc_enabled(dev)) {
2055 /* We update FBC along two paths, after changing fb/crtc
2056 * configuration (modeswitching) and after page-flipping
2057 * finishes. For the latter, we know that not only did
2058 * we disable the FBC at the start of the page-flip
2059 * sequence, but also more than one vblank has passed.
2061 * For the former case of modeswitching, it is possible
2062 * to switch between two FBC valid configurations
2063 * instantaneously so we do need to disable the FBC
2064 * before we can modify its control registers. We also
2065 * have to wait for the next vblank for that to take
2066 * effect. However, since we delay enabling FBC we can
2067 * assume that a vblank has passed since disabling and
2068 * that we can safely alter the registers in the deferred
2071 * In the scenario that we go from a valid to invalid
2072 * and then back to valid FBC configuration we have
2073 * no strict enforcement that a vblank occurred since
2074 * disabling the FBC. However, along all current pipe
2075 * disabling paths we do need to wait for a vblank at
2076 * some point. And we wait before enabling FBC anyway.
2078 DRM_DEBUG_KMS("disabling active FBC for update\n");
2079 intel_disable_fbc(dev);
2082 intel_enable_fbc(crtc, 500);
2086 /* Multiple disables should be harmless */
2087 if (intel_fbc_enabled(dev)) {
2088 DRM_DEBUG_KMS("unsupported config, disabling FBC\n");
2089 intel_disable_fbc(dev);
2094 intel_pin_and_fence_fb_obj(struct drm_device *dev,
2095 struct drm_i915_gem_object *obj,
2096 struct intel_ring_buffer *pipelined)
2098 struct drm_i915_private *dev_priv = dev->dev_private;
2102 switch (obj->tiling_mode) {
2103 case I915_TILING_NONE:
2104 if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
2105 alignment = 128 * 1024;
2106 else if (INTEL_INFO(dev)->gen >= 4)
2107 alignment = 4 * 1024;
2109 alignment = 64 * 1024;
2112 /* pin() will align the object as required by fence */
2116 /* FIXME: Is this true? */
2117 DRM_ERROR("Y tiled not allowed for scan out buffers\n");
2123 dev_priv->mm.interruptible = false;
2124 ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined);
2126 goto err_interruptible;
2128 /* Install a fence for tiled scan-out. Pre-i965 always needs a
2129 * fence, whereas 965+ only requires a fence if using
2130 * framebuffer compression. For simplicity, we always install
2131 * a fence as the cost is not that onerous.
2133 if (obj->tiling_mode != I915_TILING_NONE) {
2134 ret = i915_gem_object_get_fence(obj, pipelined);
2138 i915_gem_object_pin_fence(obj);
2141 dev_priv->mm.interruptible = true;
2145 i915_gem_object_unpin(obj);
2147 dev_priv->mm.interruptible = true;
2151 void intel_unpin_fb_obj(struct drm_i915_gem_object *obj)
2153 i915_gem_object_unpin_fence(obj);
2154 i915_gem_object_unpin(obj);
2157 static int i9xx_update_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb,
2160 struct drm_device *dev = crtc->dev;
2161 struct drm_i915_private *dev_priv = dev->dev_private;
2162 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2163 struct intel_framebuffer *intel_fb;
2164 struct drm_i915_gem_object *obj;
2165 int plane = intel_crtc->plane;
2166 unsigned long Start, Offset;
2175 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
2179 intel_fb = to_intel_framebuffer(fb);
2180 obj = intel_fb->obj;
2182 reg = DSPCNTR(plane);
2183 dspcntr = I915_READ(reg);
2184 /* Mask out pixel format bits in case we change it */
2185 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
2186 switch (fb->bits_per_pixel) {
2188 dspcntr |= DISPPLANE_8BPP;
2191 if (fb->depth == 15)
2192 dspcntr |= DISPPLANE_15_16BPP;
2194 dspcntr |= DISPPLANE_16BPP;
2198 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
2201 DRM_ERROR("Unknown color depth %d\n", fb->bits_per_pixel);
2204 if (INTEL_INFO(dev)->gen >= 4) {
2205 if (obj->tiling_mode != I915_TILING_NONE)
2206 dspcntr |= DISPPLANE_TILED;
2208 dspcntr &= ~DISPPLANE_TILED;
2211 I915_WRITE(reg, dspcntr);
2213 Start = obj->gtt_offset;
2214 Offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8);
2216 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
2217 Start, Offset, x, y, fb->pitches[0]);
2218 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2219 if (INTEL_INFO(dev)->gen >= 4) {
2220 I915_WRITE(DSPSURF(plane), Start);
2221 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2222 I915_WRITE(DSPADDR(plane), Offset);
2224 I915_WRITE(DSPADDR(plane), Start + Offset);
2230 static int ironlake_update_plane(struct drm_crtc *crtc,
2231 struct drm_framebuffer *fb, int x, int y)
2233 struct drm_device *dev = crtc->dev;
2234 struct drm_i915_private *dev_priv = dev->dev_private;
2235 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2236 struct intel_framebuffer *intel_fb;
2237 struct drm_i915_gem_object *obj;
2238 int plane = intel_crtc->plane;
2239 unsigned long Start, Offset;
2249 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
2253 intel_fb = to_intel_framebuffer(fb);
2254 obj = intel_fb->obj;
2256 reg = DSPCNTR(plane);
2257 dspcntr = I915_READ(reg);
2258 /* Mask out pixel format bits in case we change it */
2259 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
2260 switch (fb->bits_per_pixel) {
2262 dspcntr |= DISPPLANE_8BPP;
2265 if (fb->depth != 16)
2268 dspcntr |= DISPPLANE_16BPP;
2272 if (fb->depth == 24)
2273 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
2274 else if (fb->depth == 30)
2275 dspcntr |= DISPPLANE_32BPP_30BIT_NO_ALPHA;
2280 DRM_ERROR("Unknown color depth %d\n", fb->bits_per_pixel);
2284 if (obj->tiling_mode != I915_TILING_NONE)
2285 dspcntr |= DISPPLANE_TILED;
2287 dspcntr &= ~DISPPLANE_TILED;
2290 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2292 I915_WRITE(reg, dspcntr);
2294 Start = obj->gtt_offset;
2295 Offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8);
2297 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
2298 Start, Offset, x, y, fb->pitches[0]);
2299 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2300 I915_WRITE(DSPSURF(plane), Start);
2301 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2302 I915_WRITE(DSPADDR(plane), Offset);
2308 /* Assume fb object is pinned & idle & fenced and just update base pointers */
2310 intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
2311 int x, int y, enum mode_set_atomic state)
2313 struct drm_device *dev = crtc->dev;
2314 struct drm_i915_private *dev_priv = dev->dev_private;
2317 ret = dev_priv->display.update_plane(crtc, fb, x, y);
2321 intel_update_fbc(dev);
2322 intel_increase_pllclock(crtc);
2328 intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
2329 struct drm_framebuffer *old_fb)
2331 struct drm_device *dev = crtc->dev;
2332 struct drm_i915_master_private *master_priv;
2333 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2338 DRM_ERROR("No FB bound\n");
2342 switch (intel_crtc->plane) {
2347 if (IS_IVYBRIDGE(dev))
2349 /* fall through otherwise */
2351 DRM_ERROR("no plane for crtc\n");
2355 mutex_lock(&dev->struct_mutex);
2356 ret = intel_pin_and_fence_fb_obj(dev,
2357 to_intel_framebuffer(crtc->fb)->obj,
2360 mutex_unlock(&dev->struct_mutex);
2361 DRM_ERROR("pin & fence failed\n");
2366 struct drm_i915_private *dev_priv = dev->dev_private;
2367 struct drm_i915_gem_object *obj = to_intel_framebuffer(old_fb)->obj;
2369 wait_event(dev_priv->pending_flip_queue,
2370 atomic_read(&dev_priv->mm.wedged) ||
2371 atomic_read(&obj->pending_flip) == 0);
2373 /* Big Hammer, we also need to ensure that any pending
2374 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
2375 * current scanout is retired before unpinning the old
2378 * This should only fail upon a hung GPU, in which case we
2379 * can safely continue.
2381 ret = i915_gem_object_finish_gpu(obj);
2385 ret = intel_pipe_set_base_atomic(crtc, crtc->fb, x, y,
2386 LEAVE_ATOMIC_MODE_SET);
2388 intel_unpin_fb_obj(to_intel_framebuffer(crtc->fb)->obj);
2389 mutex_unlock(&dev->struct_mutex);
2390 DRM_ERROR("failed to update base address\n");
2395 intel_wait_for_vblank(dev, intel_crtc->pipe);
2396 intel_unpin_fb_obj(to_intel_framebuffer(old_fb)->obj);
2399 mutex_unlock(&dev->struct_mutex);
2401 if (!dev->primary->master)
2404 master_priv = dev->primary->master->driver_priv;
2405 if (!master_priv->sarea_priv)
2408 if (intel_crtc->pipe) {
2409 master_priv->sarea_priv->pipeB_x = x;
2410 master_priv->sarea_priv->pipeB_y = y;
2412 master_priv->sarea_priv->pipeA_x = x;
2413 master_priv->sarea_priv->pipeA_y = y;
2419 static void ironlake_set_pll_edp(struct drm_crtc *crtc, int clock)
2421 struct drm_device *dev = crtc->dev;
2422 struct drm_i915_private *dev_priv = dev->dev_private;
2425 DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock);
2426 dpa_ctl = I915_READ(DP_A);
2427 dpa_ctl &= ~DP_PLL_FREQ_MASK;
2429 if (clock < 200000) {
2431 dpa_ctl |= DP_PLL_FREQ_160MHZ;
2432 /* workaround for 160Mhz:
2433 1) program 0x4600c bits 15:0 = 0x8124
2434 2) program 0x46010 bit 0 = 1
2435 3) program 0x46034 bit 24 = 1
2436 4) program 0x64000 bit 14 = 1
2438 temp = I915_READ(0x4600c);
2440 I915_WRITE(0x4600c, temp | 0x8124);
2442 temp = I915_READ(0x46010);
2443 I915_WRITE(0x46010, temp | 1);
2445 temp = I915_READ(0x46034);
2446 I915_WRITE(0x46034, temp | (1 << 24));
2448 dpa_ctl |= DP_PLL_FREQ_270MHZ;
2450 I915_WRITE(DP_A, dpa_ctl);
2456 static void intel_fdi_normal_train(struct drm_crtc *crtc)
2458 struct drm_device *dev = crtc->dev;
2459 struct drm_i915_private *dev_priv = dev->dev_private;
2460 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2461 int pipe = intel_crtc->pipe;
2464 /* enable normal train */
2465 reg = FDI_TX_CTL(pipe);
2466 temp = I915_READ(reg);
2467 if (IS_IVYBRIDGE(dev)) {
2468 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2469 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
2471 temp &= ~FDI_LINK_TRAIN_NONE;
2472 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
2474 I915_WRITE(reg, temp);
2476 reg = FDI_RX_CTL(pipe);
2477 temp = I915_READ(reg);
2478 if (HAS_PCH_CPT(dev)) {
2479 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2480 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
2482 temp &= ~FDI_LINK_TRAIN_NONE;
2483 temp |= FDI_LINK_TRAIN_NONE;
2485 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
2487 /* wait one idle pattern time */
2491 /* IVB wants error correction enabled */
2492 if (IS_IVYBRIDGE(dev))
2493 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
2494 FDI_FE_ERRC_ENABLE);
2497 static void cpt_phase_pointer_enable(struct drm_device *dev, int pipe)
2499 struct drm_i915_private *dev_priv = dev->dev_private;
2500 u32 flags = I915_READ(SOUTH_CHICKEN1);
2502 flags |= FDI_PHASE_SYNC_OVR(pipe);
2503 I915_WRITE(SOUTH_CHICKEN1, flags); /* once to unlock... */
2504 flags |= FDI_PHASE_SYNC_EN(pipe);
2505 I915_WRITE(SOUTH_CHICKEN1, flags); /* then again to enable */
2506 POSTING_READ(SOUTH_CHICKEN1);
2509 /* The FDI link training functions for ILK/Ibexpeak. */
2510 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
2512 struct drm_device *dev = crtc->dev;
2513 struct drm_i915_private *dev_priv = dev->dev_private;
2514 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2515 int pipe = intel_crtc->pipe;
2516 int plane = intel_crtc->plane;
2517 u32 reg, temp, tries;
2519 /* FDI needs bits from pipe & plane first */
2520 assert_pipe_enabled(dev_priv, pipe);
2521 assert_plane_enabled(dev_priv, plane);
2523 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2525 reg = FDI_RX_IMR(pipe);
2526 temp = I915_READ(reg);
2527 temp &= ~FDI_RX_SYMBOL_LOCK;
2528 temp &= ~FDI_RX_BIT_LOCK;
2529 I915_WRITE(reg, temp);
2533 /* enable CPU FDI TX and PCH FDI RX */
2534 reg = FDI_TX_CTL(pipe);
2535 temp = I915_READ(reg);
2537 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2538 temp &= ~FDI_LINK_TRAIN_NONE;
2539 temp |= FDI_LINK_TRAIN_PATTERN_1;
2540 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2542 reg = FDI_RX_CTL(pipe);
2543 temp = I915_READ(reg);
2544 temp &= ~FDI_LINK_TRAIN_NONE;
2545 temp |= FDI_LINK_TRAIN_PATTERN_1;
2546 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2551 /* Ironlake workaround, enable clock pointer after FDI enable*/
2552 if (HAS_PCH_IBX(dev)) {
2553 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
2554 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
2555 FDI_RX_PHASE_SYNC_POINTER_EN);
2558 reg = FDI_RX_IIR(pipe);
2559 for (tries = 0; tries < 5; tries++) {
2560 temp = I915_READ(reg);
2561 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2563 if ((temp & FDI_RX_BIT_LOCK)) {
2564 DRM_DEBUG_KMS("FDI train 1 done.\n");
2565 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2570 DRM_ERROR("FDI train 1 fail!\n");
2573 reg = FDI_TX_CTL(pipe);
2574 temp = I915_READ(reg);
2575 temp &= ~FDI_LINK_TRAIN_NONE;
2576 temp |= FDI_LINK_TRAIN_PATTERN_2;
2577 I915_WRITE(reg, temp);
2579 reg = FDI_RX_CTL(pipe);
2580 temp = I915_READ(reg);
2581 temp &= ~FDI_LINK_TRAIN_NONE;
2582 temp |= FDI_LINK_TRAIN_PATTERN_2;
2583 I915_WRITE(reg, temp);
2588 reg = FDI_RX_IIR(pipe);
2589 for (tries = 0; tries < 5; tries++) {
2590 temp = I915_READ(reg);
2591 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2593 if (temp & FDI_RX_SYMBOL_LOCK) {
2594 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2595 DRM_DEBUG_KMS("FDI train 2 done.\n");
2600 DRM_ERROR("FDI train 2 fail!\n");
2602 DRM_DEBUG_KMS("FDI train done\n");
2606 static const int snb_b_fdi_train_param[] = {
2607 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
2608 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
2609 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
2610 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
2613 /* The FDI link training functions for SNB/Cougarpoint. */
2614 static void gen6_fdi_link_train(struct drm_crtc *crtc)
2616 struct drm_device *dev = crtc->dev;
2617 struct drm_i915_private *dev_priv = dev->dev_private;
2618 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2619 int pipe = intel_crtc->pipe;
2620 u32 reg, temp, i, retry;
2622 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2624 reg = FDI_RX_IMR(pipe);
2625 temp = I915_READ(reg);
2626 temp &= ~FDI_RX_SYMBOL_LOCK;
2627 temp &= ~FDI_RX_BIT_LOCK;
2628 I915_WRITE(reg, temp);
2633 /* enable CPU FDI TX and PCH FDI RX */
2634 reg = FDI_TX_CTL(pipe);
2635 temp = I915_READ(reg);
2637 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2638 temp &= ~FDI_LINK_TRAIN_NONE;
2639 temp |= FDI_LINK_TRAIN_PATTERN_1;
2640 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2642 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2643 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2645 reg = FDI_RX_CTL(pipe);
2646 temp = I915_READ(reg);
2647 if (HAS_PCH_CPT(dev)) {
2648 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2649 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2651 temp &= ~FDI_LINK_TRAIN_NONE;
2652 temp |= FDI_LINK_TRAIN_PATTERN_1;
2654 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2659 if (HAS_PCH_CPT(dev))
2660 cpt_phase_pointer_enable(dev, pipe);
2662 for (i = 0; i < 4; i++) {
2663 reg = FDI_TX_CTL(pipe);
2664 temp = I915_READ(reg);
2665 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2666 temp |= snb_b_fdi_train_param[i];
2667 I915_WRITE(reg, temp);
2672 for (retry = 0; retry < 5; retry++) {
2673 reg = FDI_RX_IIR(pipe);
2674 temp = I915_READ(reg);
2675 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2676 if (temp & FDI_RX_BIT_LOCK) {
2677 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2678 DRM_DEBUG_KMS("FDI train 1 done.\n");
2687 DRM_ERROR("FDI train 1 fail!\n");
2690 reg = FDI_TX_CTL(pipe);
2691 temp = I915_READ(reg);
2692 temp &= ~FDI_LINK_TRAIN_NONE;
2693 temp |= FDI_LINK_TRAIN_PATTERN_2;
2695 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2697 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2699 I915_WRITE(reg, temp);
2701 reg = FDI_RX_CTL(pipe);
2702 temp = I915_READ(reg);
2703 if (HAS_PCH_CPT(dev)) {
2704 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2705 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2707 temp &= ~FDI_LINK_TRAIN_NONE;
2708 temp |= FDI_LINK_TRAIN_PATTERN_2;
2710 I915_WRITE(reg, temp);
2715 for (i = 0; i < 4; i++) {
2716 reg = FDI_TX_CTL(pipe);
2717 temp = I915_READ(reg);
2718 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2719 temp |= snb_b_fdi_train_param[i];
2720 I915_WRITE(reg, temp);
2725 for (retry = 0; retry < 5; retry++) {
2726 reg = FDI_RX_IIR(pipe);
2727 temp = I915_READ(reg);
2728 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2729 if (temp & FDI_RX_SYMBOL_LOCK) {
2730 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2731 DRM_DEBUG_KMS("FDI train 2 done.\n");
2740 DRM_ERROR("FDI train 2 fail!\n");
2742 DRM_DEBUG_KMS("FDI train done.\n");
2745 /* Manual link training for Ivy Bridge A0 parts */
2746 static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
2748 struct drm_device *dev = crtc->dev;
2749 struct drm_i915_private *dev_priv = dev->dev_private;
2750 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2751 int pipe = intel_crtc->pipe;
2754 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2756 reg = FDI_RX_IMR(pipe);
2757 temp = I915_READ(reg);
2758 temp &= ~FDI_RX_SYMBOL_LOCK;
2759 temp &= ~FDI_RX_BIT_LOCK;
2760 I915_WRITE(reg, temp);
2765 /* enable CPU FDI TX and PCH FDI RX */
2766 reg = FDI_TX_CTL(pipe);
2767 temp = I915_READ(reg);
2769 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2770 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
2771 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
2772 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2773 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2774 temp |= FDI_COMPOSITE_SYNC;
2775 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2777 reg = FDI_RX_CTL(pipe);
2778 temp = I915_READ(reg);
2779 temp &= ~FDI_LINK_TRAIN_AUTO;
2780 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2781 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2782 temp |= FDI_COMPOSITE_SYNC;
2783 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2788 if (HAS_PCH_CPT(dev))
2789 cpt_phase_pointer_enable(dev, pipe);
2791 for (i = 0; i < 4; i++) {
2792 reg = FDI_TX_CTL(pipe);
2793 temp = I915_READ(reg);
2794 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2795 temp |= snb_b_fdi_train_param[i];
2796 I915_WRITE(reg, temp);
2801 reg = FDI_RX_IIR(pipe);
2802 temp = I915_READ(reg);
2803 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2805 if (temp & FDI_RX_BIT_LOCK ||
2806 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
2807 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2808 DRM_DEBUG_KMS("FDI train 1 done.\n");
2813 DRM_ERROR("FDI train 1 fail!\n");
2816 reg = FDI_TX_CTL(pipe);
2817 temp = I915_READ(reg);
2818 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2819 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
2820 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2821 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2822 I915_WRITE(reg, temp);
2824 reg = FDI_RX_CTL(pipe);
2825 temp = I915_READ(reg);
2826 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2827 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2828 I915_WRITE(reg, temp);
2833 for (i = 0; i < 4; i++) {
2834 reg = FDI_TX_CTL(pipe);
2835 temp = I915_READ(reg);
2836 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2837 temp |= snb_b_fdi_train_param[i];
2838 I915_WRITE(reg, temp);
2843 reg = FDI_RX_IIR(pipe);
2844 temp = I915_READ(reg);
2845 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2847 if (temp & FDI_RX_SYMBOL_LOCK) {
2848 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2849 DRM_DEBUG_KMS("FDI train 2 done.\n");
2854 DRM_ERROR("FDI train 2 fail!\n");
2856 DRM_DEBUG_KMS("FDI train done.\n");
2859 static void ironlake_fdi_pll_enable(struct drm_crtc *crtc)
2861 struct drm_device *dev = crtc->dev;
2862 struct drm_i915_private *dev_priv = dev->dev_private;
2863 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2864 int pipe = intel_crtc->pipe;
2867 /* Write the TU size bits so error detection works */
2868 I915_WRITE(FDI_RX_TUSIZE1(pipe),
2869 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
2871 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
2872 reg = FDI_RX_CTL(pipe);
2873 temp = I915_READ(reg);
2874 temp &= ~((0x7 << 19) | (0x7 << 16));
2875 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2876 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2877 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
2882 /* Switch from Rawclk to PCDclk */
2883 temp = I915_READ(reg);
2884 I915_WRITE(reg, temp | FDI_PCDCLK);
2889 /* Enable CPU FDI TX PLL, always on for Ironlake */
2890 reg = FDI_TX_CTL(pipe);
2891 temp = I915_READ(reg);
2892 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
2893 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
2900 static void cpt_phase_pointer_disable(struct drm_device *dev, int pipe)
2902 struct drm_i915_private *dev_priv = dev->dev_private;
2903 u32 flags = I915_READ(SOUTH_CHICKEN1);
2905 flags &= ~(FDI_PHASE_SYNC_EN(pipe));
2906 I915_WRITE(SOUTH_CHICKEN1, flags); /* once to disable... */
2907 flags &= ~(FDI_PHASE_SYNC_OVR(pipe));
2908 I915_WRITE(SOUTH_CHICKEN1, flags); /* then again to lock */
2909 POSTING_READ(SOUTH_CHICKEN1);
2911 static void ironlake_fdi_disable(struct drm_crtc *crtc)
2913 struct drm_device *dev = crtc->dev;
2914 struct drm_i915_private *dev_priv = dev->dev_private;
2915 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2916 int pipe = intel_crtc->pipe;
2919 /* disable CPU FDI tx and PCH FDI rx */
2920 reg = FDI_TX_CTL(pipe);
2921 temp = I915_READ(reg);
2922 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
2925 reg = FDI_RX_CTL(pipe);
2926 temp = I915_READ(reg);
2927 temp &= ~(0x7 << 16);
2928 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2929 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
2934 /* Ironlake workaround, disable clock pointer after downing FDI */
2935 if (HAS_PCH_IBX(dev)) {
2936 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
2937 I915_WRITE(FDI_RX_CHICKEN(pipe),
2938 I915_READ(FDI_RX_CHICKEN(pipe) &
2939 ~FDI_RX_PHASE_SYNC_POINTER_EN));
2940 } else if (HAS_PCH_CPT(dev)) {
2941 cpt_phase_pointer_disable(dev, pipe);
2944 /* still set train pattern 1 */
2945 reg = FDI_TX_CTL(pipe);
2946 temp = I915_READ(reg);
2947 temp &= ~FDI_LINK_TRAIN_NONE;
2948 temp |= FDI_LINK_TRAIN_PATTERN_1;
2949 I915_WRITE(reg, temp);
2951 reg = FDI_RX_CTL(pipe);
2952 temp = I915_READ(reg);
2953 if (HAS_PCH_CPT(dev)) {
2954 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2955 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2957 temp &= ~FDI_LINK_TRAIN_NONE;
2958 temp |= FDI_LINK_TRAIN_PATTERN_1;
2960 /* BPC in FDI rx is consistent with that in PIPECONF */
2961 temp &= ~(0x07 << 16);
2962 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2963 I915_WRITE(reg, temp);
2970 * When we disable a pipe, we need to clear any pending scanline wait events
2971 * to avoid hanging the ring, which we assume we are waiting on.
2973 static void intel_clear_scanline_wait(struct drm_device *dev)
2975 struct drm_i915_private *dev_priv = dev->dev_private;
2976 struct intel_ring_buffer *ring;
2980 /* Can't break the hang on i8xx */
2983 ring = LP_RING(dev_priv);
2984 tmp = I915_READ_CTL(ring);
2985 if (tmp & RING_WAIT)
2986 I915_WRITE_CTL(ring, tmp);
2989 static void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
2991 struct drm_i915_gem_object *obj;
2992 struct drm_i915_private *dev_priv;
2994 if (crtc->fb == NULL)
2997 obj = to_intel_framebuffer(crtc->fb)->obj;
2998 dev_priv = crtc->dev->dev_private;
2999 wait_event(dev_priv->pending_flip_queue,
3000 atomic_read(&obj->pending_flip) == 0);
3003 static bool intel_crtc_driving_pch(struct drm_crtc *crtc)
3005 struct drm_device *dev = crtc->dev;
3006 struct drm_mode_config *mode_config = &dev->mode_config;
3007 struct intel_encoder *encoder;
3010 * If there's a non-PCH eDP on this crtc, it must be DP_A, and that
3011 * must be driven by its own crtc; no sharing is possible.
3013 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
3014 if (encoder->base.crtc != crtc)
3017 switch (encoder->type) {
3018 case INTEL_OUTPUT_EDP:
3019 if (!intel_encoder_is_pch_edp(&encoder->base))
3029 * Enable PCH resources required for PCH ports:
3031 * - FDI training & RX/TX
3032 * - update transcoder timings
3033 * - DP transcoding bits
3036 static void ironlake_pch_enable(struct drm_crtc *crtc)
3038 struct drm_device *dev = crtc->dev;
3039 struct drm_i915_private *dev_priv = dev->dev_private;
3040 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3041 int pipe = intel_crtc->pipe;
3042 u32 reg, temp, transc_sel;
3044 /* For PCH output, training FDI link */
3045 dev_priv->display.fdi_link_train(crtc);
3047 intel_enable_pch_pll(dev_priv, pipe);
3049 if (HAS_PCH_CPT(dev)) {
3050 transc_sel = intel_crtc->use_pll_a ? TRANSC_DPLLA_SEL :
3053 /* Be sure PCH DPLL SEL is set */
3054 temp = I915_READ(PCH_DPLL_SEL);
3056 temp &= ~(TRANSA_DPLLB_SEL);
3057 temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
3058 } else if (pipe == 1) {
3059 temp &= ~(TRANSB_DPLLB_SEL);
3060 temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
3061 } else if (pipe == 2) {
3062 temp &= ~(TRANSC_DPLLB_SEL);
3063 temp |= (TRANSC_DPLL_ENABLE | transc_sel);
3065 I915_WRITE(PCH_DPLL_SEL, temp);
3068 /* set transcoder timing, panel must allow it */
3069 assert_panel_unlocked(dev_priv, pipe);
3070 I915_WRITE(TRANS_HTOTAL(pipe), I915_READ(HTOTAL(pipe)));
3071 I915_WRITE(TRANS_HBLANK(pipe), I915_READ(HBLANK(pipe)));
3072 I915_WRITE(TRANS_HSYNC(pipe), I915_READ(HSYNC(pipe)));
3074 I915_WRITE(TRANS_VTOTAL(pipe), I915_READ(VTOTAL(pipe)));
3075 I915_WRITE(TRANS_VBLANK(pipe), I915_READ(VBLANK(pipe)));
3076 I915_WRITE(TRANS_VSYNC(pipe), I915_READ(VSYNC(pipe)));
3077 I915_WRITE(TRANS_VSYNCSHIFT(pipe), I915_READ(VSYNCSHIFT(pipe)));
3079 intel_fdi_normal_train(crtc);
3081 /* For PCH DP, enable TRANS_DP_CTL */
3082 if (HAS_PCH_CPT(dev) &&
3083 (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
3084 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))) {
3085 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) >> 5;
3086 reg = TRANS_DP_CTL(pipe);
3087 temp = I915_READ(reg);
3088 temp &= ~(TRANS_DP_PORT_SEL_MASK |
3089 TRANS_DP_SYNC_MASK |
3091 temp |= (TRANS_DP_OUTPUT_ENABLE |
3092 TRANS_DP_ENH_FRAMING);
3093 temp |= bpc << 9; /* same format but at 11:9 */
3095 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
3096 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
3097 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
3098 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
3100 switch (intel_trans_dp_port_sel(crtc)) {
3102 temp |= TRANS_DP_PORT_SEL_B;
3105 temp |= TRANS_DP_PORT_SEL_C;
3108 temp |= TRANS_DP_PORT_SEL_D;
3111 DRM_DEBUG_KMS("Wrong PCH DP port return. Guess port B\n");
3112 temp |= TRANS_DP_PORT_SEL_B;
3116 I915_WRITE(reg, temp);
3119 intel_enable_transcoder(dev_priv, pipe);
3122 void intel_cpt_verify_modeset(struct drm_device *dev, int pipe)
3124 struct drm_i915_private *dev_priv = dev->dev_private;
3125 int dslreg = PIPEDSL(pipe), tc2reg = TRANS_CHICKEN2(pipe);
3128 temp = I915_READ(dslreg);
3130 if (wait_for(I915_READ(dslreg) != temp, 5)) {
3131 /* Without this, mode sets may fail silently on FDI */
3132 I915_WRITE(tc2reg, TRANS_AUTOTRAIN_GEN_STALL_DIS);
3134 I915_WRITE(tc2reg, 0);
3135 if (wait_for(I915_READ(dslreg) != temp, 5))
3136 DRM_ERROR("mode set failed: pipe %d stuck\n", pipe);
3140 static void ironlake_crtc_enable(struct drm_crtc *crtc)
3142 struct drm_device *dev = crtc->dev;
3143 struct drm_i915_private *dev_priv = dev->dev_private;
3144 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3145 int pipe = intel_crtc->pipe;
3146 int plane = intel_crtc->plane;
3150 if (intel_crtc->active)
3153 intel_crtc->active = true;
3154 intel_update_watermarks(dev);
3156 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
3157 temp = I915_READ(PCH_LVDS);
3158 if ((temp & LVDS_PORT_EN) == 0)
3159 I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
3162 is_pch_port = intel_crtc_driving_pch(crtc);
3165 ironlake_fdi_pll_enable(crtc);
3167 ironlake_fdi_disable(crtc);
3169 /* Enable panel fitting for LVDS */
3170 if (dev_priv->pch_pf_size &&
3171 (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) || HAS_eDP)) {
3172 /* Force use of hard-coded filter coefficients
3173 * as some pre-programmed values are broken,
3176 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
3177 I915_WRITE(PF_WIN_POS(pipe), dev_priv->pch_pf_pos);
3178 I915_WRITE(PF_WIN_SZ(pipe), dev_priv->pch_pf_size);
3182 * On ILK+ LUT must be loaded before the pipe is running but with
3185 intel_crtc_load_lut(crtc);
3187 intel_enable_pipe(dev_priv, pipe, is_pch_port);
3188 intel_enable_plane(dev_priv, plane, pipe);
3191 ironlake_pch_enable(crtc);
3193 mutex_lock(&dev->struct_mutex);
3194 intel_update_fbc(dev);
3195 mutex_unlock(&dev->struct_mutex);
3197 intel_crtc_update_cursor(crtc, true);
3200 static void ironlake_crtc_disable(struct drm_crtc *crtc)
3202 struct drm_device *dev = crtc->dev;
3203 struct drm_i915_private *dev_priv = dev->dev_private;
3204 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3205 int pipe = intel_crtc->pipe;
3206 int plane = intel_crtc->plane;
3209 if (!intel_crtc->active)
3212 intel_crtc_wait_for_pending_flips(crtc);
3213 drm_vblank_off(dev, pipe);
3214 intel_crtc_update_cursor(crtc, false);
3216 intel_disable_plane(dev_priv, plane, pipe);
3218 if (dev_priv->cfb_plane == plane)
3219 intel_disable_fbc(dev);
3221 intel_disable_pipe(dev_priv, pipe);
3224 I915_WRITE(PF_CTL(pipe), 0);
3225 I915_WRITE(PF_WIN_SZ(pipe), 0);
3227 ironlake_fdi_disable(crtc);
3229 /* This is a horrible layering violation; we should be doing this in
3230 * the connector/encoder ->prepare instead, but we don't always have
3231 * enough information there about the config to know whether it will
3232 * actually be necessary or just cause undesired flicker.
3234 intel_disable_pch_ports(dev_priv, pipe);
3236 intel_disable_transcoder(dev_priv, pipe);
3238 if (HAS_PCH_CPT(dev)) {
3239 /* disable TRANS_DP_CTL */
3240 reg = TRANS_DP_CTL(pipe);
3241 temp = I915_READ(reg);
3242 temp &= ~(TRANS_DP_OUTPUT_ENABLE | TRANS_DP_PORT_SEL_MASK);
3243 temp |= TRANS_DP_PORT_SEL_NONE;
3244 I915_WRITE(reg, temp);
3246 /* disable DPLL_SEL */
3247 temp = I915_READ(PCH_DPLL_SEL);
3250 temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLB_SEL);
3253 temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
3256 /* C shares PLL A or B */
3257 temp &= ~(TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL);
3262 I915_WRITE(PCH_DPLL_SEL, temp);
3265 /* disable PCH DPLL */
3266 if (!intel_crtc->no_pll)
3267 intel_disable_pch_pll(dev_priv, pipe);
3269 /* Switch from PCDclk to Rawclk */
3270 reg = FDI_RX_CTL(pipe);
3271 temp = I915_READ(reg);
3272 I915_WRITE(reg, temp & ~FDI_PCDCLK);
3274 /* Disable CPU FDI TX PLL */
3275 reg = FDI_TX_CTL(pipe);
3276 temp = I915_READ(reg);
3277 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
3282 reg = FDI_RX_CTL(pipe);
3283 temp = I915_READ(reg);
3284 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
3286 /* Wait for the clocks to turn off. */
3290 intel_crtc->active = false;
3291 intel_update_watermarks(dev);
3293 mutex_lock(&dev->struct_mutex);
3294 intel_update_fbc(dev);
3295 intel_clear_scanline_wait(dev);
3296 mutex_unlock(&dev->struct_mutex);
3299 static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode)
3301 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3302 int pipe = intel_crtc->pipe;
3303 int plane = intel_crtc->plane;
3305 /* XXX: When our outputs are all unaware of DPMS modes other than off
3306 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
3309 case DRM_MODE_DPMS_ON:
3310 case DRM_MODE_DPMS_STANDBY:
3311 case DRM_MODE_DPMS_SUSPEND:
3312 DRM_DEBUG_KMS("crtc %d/%d dpms on\n", pipe, plane);
3313 ironlake_crtc_enable(crtc);
3316 case DRM_MODE_DPMS_OFF:
3317 DRM_DEBUG_KMS("crtc %d/%d dpms off\n", pipe, plane);
3318 ironlake_crtc_disable(crtc);
3323 static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
3325 if (!enable && intel_crtc->overlay) {
3326 struct drm_device *dev = intel_crtc->base.dev;
3327 struct drm_i915_private *dev_priv = dev->dev_private;
3329 mutex_lock(&dev->struct_mutex);
3330 dev_priv->mm.interruptible = false;
3331 (void) intel_overlay_switch_off(intel_crtc->overlay);
3332 dev_priv->mm.interruptible = true;
3333 mutex_unlock(&dev->struct_mutex);
3336 /* Let userspace switch the overlay on again. In most cases userspace
3337 * has to recompute where to put it anyway.
3341 static void i9xx_crtc_enable(struct drm_crtc *crtc)
3343 struct drm_device *dev = crtc->dev;
3344 struct drm_i915_private *dev_priv = dev->dev_private;
3345 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3346 int pipe = intel_crtc->pipe;
3347 int plane = intel_crtc->plane;
3349 if (intel_crtc->active)
3352 intel_crtc->active = true;
3353 intel_update_watermarks(dev);
3355 intel_enable_pll(dev_priv, pipe);
3356 intel_enable_pipe(dev_priv, pipe, false);
3357 intel_enable_plane(dev_priv, plane, pipe);
3359 intel_crtc_load_lut(crtc);
3360 intel_update_fbc(dev);
3362 /* Give the overlay scaler a chance to enable if it's on this pipe */
3363 intel_crtc_dpms_overlay(intel_crtc, true);
3364 intel_crtc_update_cursor(crtc, true);
3367 static void i9xx_crtc_disable(struct drm_crtc *crtc)
3369 struct drm_device *dev = crtc->dev;
3370 struct drm_i915_private *dev_priv = dev->dev_private;
3371 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3372 int pipe = intel_crtc->pipe;
3373 int plane = intel_crtc->plane;
3375 if (!intel_crtc->active)
3378 /* Give the overlay scaler a chance to disable if it's on this pipe */
3379 intel_crtc_wait_for_pending_flips(crtc);
3380 drm_vblank_off(dev, pipe);
3381 intel_crtc_dpms_overlay(intel_crtc, false);
3382 intel_crtc_update_cursor(crtc, false);
3384 if (dev_priv->cfb_plane == plane)
3385 intel_disable_fbc(dev);
3387 intel_disable_plane(dev_priv, plane, pipe);
3388 intel_disable_pipe(dev_priv, pipe);
3389 intel_disable_pll(dev_priv, pipe);
3391 intel_crtc->active = false;
3392 intel_update_fbc(dev);
3393 intel_update_watermarks(dev);
3394 intel_clear_scanline_wait(dev);
3397 static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
3399 /* XXX: When our outputs are all unaware of DPMS modes other than off
3400 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
3403 case DRM_MODE_DPMS_ON:
3404 case DRM_MODE_DPMS_STANDBY:
3405 case DRM_MODE_DPMS_SUSPEND:
3406 i9xx_crtc_enable(crtc);
3408 case DRM_MODE_DPMS_OFF:
3409 i9xx_crtc_disable(crtc);
3415 * Sets the power management mode of the pipe and plane.
3417 static void intel_crtc_dpms(struct drm_crtc *crtc, int mode)
3419 struct drm_device *dev = crtc->dev;
3420 struct drm_i915_private *dev_priv = dev->dev_private;
3421 struct drm_i915_master_private *master_priv;
3422 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3423 int pipe = intel_crtc->pipe;
3426 if (intel_crtc->dpms_mode == mode)
3429 intel_crtc->dpms_mode = mode;
3431 dev_priv->display.dpms(crtc, mode);
3433 if (!dev->primary->master)
3436 master_priv = dev->primary->master->driver_priv;
3437 if (!master_priv->sarea_priv)
3440 enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF;
3444 master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0;
3445 master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0;
3448 master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0;
3449 master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0;
3452 DRM_ERROR("Can't update pipe %c in SAREA\n", pipe_name(pipe));
3457 static void intel_crtc_disable(struct drm_crtc *crtc)
3459 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
3460 struct drm_device *dev = crtc->dev;
3462 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
3463 assert_plane_disabled(dev->dev_private, to_intel_crtc(crtc)->plane);
3464 assert_pipe_disabled(dev->dev_private, to_intel_crtc(crtc)->pipe);
3467 mutex_lock(&dev->struct_mutex);
3468 intel_unpin_fb_obj(to_intel_framebuffer(crtc->fb)->obj);
3469 mutex_unlock(&dev->struct_mutex);
3473 /* Prepare for a mode set.
3475 * Note we could be a lot smarter here. We need to figure out which outputs
3476 * will be enabled, which disabled (in short, how the config will changes)
3477 * and perform the minimum necessary steps to accomplish that, e.g. updating
3478 * watermarks, FBC configuration, making sure PLLs are programmed correctly,
3479 * panel fitting is in the proper state, etc.
3481 static void i9xx_crtc_prepare(struct drm_crtc *crtc)
3483 i9xx_crtc_disable(crtc);
3486 static void i9xx_crtc_commit(struct drm_crtc *crtc)
3488 i9xx_crtc_enable(crtc);
3491 static void ironlake_crtc_prepare(struct drm_crtc *crtc)
3493 ironlake_crtc_disable(crtc);
3496 static void ironlake_crtc_commit(struct drm_crtc *crtc)
3498 ironlake_crtc_enable(crtc);
3501 void intel_encoder_prepare(struct drm_encoder *encoder)
3503 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3504 /* lvds has its own version of prepare see intel_lvds_prepare */
3505 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
3508 void intel_encoder_commit(struct drm_encoder *encoder)
3510 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3511 struct drm_device *dev = encoder->dev;
3512 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
3513 struct intel_crtc *intel_crtc = to_intel_crtc(intel_encoder->base.crtc);
3515 /* lvds has its own version of commit see intel_lvds_commit */
3516 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
3518 if (HAS_PCH_CPT(dev))
3519 intel_cpt_verify_modeset(dev, intel_crtc->pipe);
3522 void intel_encoder_destroy(struct drm_encoder *encoder)
3524 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
3526 drm_encoder_cleanup(encoder);
3527 kfree(intel_encoder);
3530 static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
3531 struct drm_display_mode *mode,
3532 struct drm_display_mode *adjusted_mode)
3534 struct drm_device *dev = crtc->dev;
3536 if (HAS_PCH_SPLIT(dev)) {
3537 /* FDI link clock is fixed at 2.7G */
3538 if (mode->clock * 3 > IRONLAKE_FDI_FREQ * 4)
3542 /* All interlaced capable intel hw wants timings in frames. */
3543 drm_mode_set_crtcinfo(adjusted_mode, 0);
3548 static int valleyview_get_display_clock_speed(struct drm_device *dev)
3550 return 400000; /* FIXME */
3553 static int i945_get_display_clock_speed(struct drm_device *dev)
3558 static int i915_get_display_clock_speed(struct drm_device *dev)
3563 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
3568 static int i915gm_get_display_clock_speed(struct drm_device *dev)
3572 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
3574 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
3577 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
3578 case GC_DISPLAY_CLOCK_333_MHZ:
3581 case GC_DISPLAY_CLOCK_190_200_MHZ:
3587 static int i865_get_display_clock_speed(struct drm_device *dev)
3592 static int i855_get_display_clock_speed(struct drm_device *dev)
3595 /* Assume that the hardware is in the high speed state. This
3596 * should be the default.
3598 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
3599 case GC_CLOCK_133_200:
3600 case GC_CLOCK_100_200:
3602 case GC_CLOCK_166_250:
3604 case GC_CLOCK_100_133:
3608 /* Shouldn't happen */
3612 static int i830_get_display_clock_speed(struct drm_device *dev)
3626 fdi_reduce_ratio(u32 *num, u32 *den)
3628 while (*num > 0xffffff || *den > 0xffffff) {
3635 ironlake_compute_m_n(int bits_per_pixel, int nlanes, int pixel_clock,
3636 int link_clock, struct fdi_m_n *m_n)
3638 m_n->tu = 64; /* default size */
3640 /* BUG_ON(pixel_clock > INT_MAX / 36); */
3641 m_n->gmch_m = bits_per_pixel * pixel_clock;
3642 m_n->gmch_n = link_clock * nlanes * 8;
3643 fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n);
3645 m_n->link_m = pixel_clock;
3646 m_n->link_n = link_clock;
3647 fdi_reduce_ratio(&m_n->link_m, &m_n->link_n);
3651 struct intel_watermark_params {
3652 unsigned long fifo_size;
3653 unsigned long max_wm;
3654 unsigned long default_wm;
3655 unsigned long guard_size;
3656 unsigned long cacheline_size;
3659 /* Pineview has different values for various configs */
3660 static const struct intel_watermark_params pineview_display_wm = {
3661 PINEVIEW_DISPLAY_FIFO,
3665 PINEVIEW_FIFO_LINE_SIZE
3667 static const struct intel_watermark_params pineview_display_hplloff_wm = {
3668 PINEVIEW_DISPLAY_FIFO,
3670 PINEVIEW_DFT_HPLLOFF_WM,
3672 PINEVIEW_FIFO_LINE_SIZE
3674 static const struct intel_watermark_params pineview_cursor_wm = {
3675 PINEVIEW_CURSOR_FIFO,
3676 PINEVIEW_CURSOR_MAX_WM,
3677 PINEVIEW_CURSOR_DFT_WM,
3678 PINEVIEW_CURSOR_GUARD_WM,
3679 PINEVIEW_FIFO_LINE_SIZE,
3681 static const struct intel_watermark_params pineview_cursor_hplloff_wm = {
3682 PINEVIEW_CURSOR_FIFO,
3683 PINEVIEW_CURSOR_MAX_WM,
3684 PINEVIEW_CURSOR_DFT_WM,
3685 PINEVIEW_CURSOR_GUARD_WM,
3686 PINEVIEW_FIFO_LINE_SIZE
3688 static const struct intel_watermark_params g4x_wm_info = {
3695 static const struct intel_watermark_params g4x_cursor_wm_info = {
3702 static const struct intel_watermark_params valleyview_wm_info = {
3703 VALLEYVIEW_FIFO_SIZE,
3709 static const struct intel_watermark_params valleyview_cursor_wm_info = {
3711 VALLEYVIEW_CURSOR_MAX_WM,
3716 static const struct intel_watermark_params i965_cursor_wm_info = {
3721 I915_FIFO_LINE_SIZE,
3723 static const struct intel_watermark_params i945_wm_info = {
3730 static const struct intel_watermark_params i915_wm_info = {
3737 static const struct intel_watermark_params i855_wm_info = {
3744 static const struct intel_watermark_params i830_wm_info = {
3752 static const struct intel_watermark_params ironlake_display_wm_info = {
3759 static const struct intel_watermark_params ironlake_cursor_wm_info = {
3766 static const struct intel_watermark_params ironlake_display_srwm_info = {
3767 ILK_DISPLAY_SR_FIFO,
3768 ILK_DISPLAY_MAX_SRWM,
3769 ILK_DISPLAY_DFT_SRWM,
3773 static const struct intel_watermark_params ironlake_cursor_srwm_info = {
3775 ILK_CURSOR_MAX_SRWM,
3776 ILK_CURSOR_DFT_SRWM,
3781 static const struct intel_watermark_params sandybridge_display_wm_info = {
3788 static const struct intel_watermark_params sandybridge_cursor_wm_info = {
3795 static const struct intel_watermark_params sandybridge_display_srwm_info = {
3796 SNB_DISPLAY_SR_FIFO,
3797 SNB_DISPLAY_MAX_SRWM,
3798 SNB_DISPLAY_DFT_SRWM,
3802 static const struct intel_watermark_params sandybridge_cursor_srwm_info = {
3804 SNB_CURSOR_MAX_SRWM,
3805 SNB_CURSOR_DFT_SRWM,
3812 * intel_calculate_wm - calculate watermark level
3813 * @clock_in_khz: pixel clock
3814 * @wm: chip FIFO params
3815 * @pixel_size: display pixel size
3816 * @latency_ns: memory latency for the platform
3818 * Calculate the watermark level (the level at which the display plane will
3819 * start fetching from memory again). Each chip has a different display
3820 * FIFO size and allocation, so the caller needs to figure that out and pass
3821 * in the correct intel_watermark_params structure.
3823 * As the pixel clock runs, the FIFO will be drained at a rate that depends
3824 * on the pixel size. When it reaches the watermark level, it'll start
3825 * fetching FIFO line sized based chunks from memory until the FIFO fills
3826 * past the watermark point. If the FIFO drains completely, a FIFO underrun
3827 * will occur, and a display engine hang could result.
3829 static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
3830 const struct intel_watermark_params *wm,
3833 unsigned long latency_ns)
3835 long entries_required, wm_size;
3838 * Note: we need to make sure we don't overflow for various clock &
3840 * clocks go from a few thousand to several hundred thousand.
3841 * latency is usually a few thousand
3843 entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) /
3845 entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size);
3847 DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required);
3849 wm_size = fifo_size - (entries_required + wm->guard_size);
3851 DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size);
3853 /* Don't promote wm_size to unsigned... */
3854 if (wm_size > (long)wm->max_wm)
3855 wm_size = wm->max_wm;
3857 wm_size = wm->default_wm;
3861 struct cxsr_latency {
3864 unsigned long fsb_freq;
3865 unsigned long mem_freq;
3866 unsigned long display_sr;
3867 unsigned long display_hpll_disable;
3868 unsigned long cursor_sr;
3869 unsigned long cursor_hpll_disable;
3872 static const struct cxsr_latency cxsr_latency_table[] = {
3873 {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
3874 {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
3875 {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
3876 {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */
3877 {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */
3879 {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
3880 {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
3881 {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
3882 {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */
3883 {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */
3885 {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
3886 {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
3887 {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
3888 {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */
3889 {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */
3891 {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
3892 {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
3893 {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
3894 {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */
3895 {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */
3897 {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
3898 {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
3899 {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
3900 {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */
3901 {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */
3903 {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
3904 {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
3905 {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
3906 {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */
3907 {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */
3910 static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop,
3915 const struct cxsr_latency *latency;
3918 if (fsb == 0 || mem == 0)
3921 for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
3922 latency = &cxsr_latency_table[i];
3923 if (is_desktop == latency->is_desktop &&
3924 is_ddr3 == latency->is_ddr3 &&
3925 fsb == latency->fsb_freq && mem == latency->mem_freq)
3929 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
3934 static void pineview_disable_cxsr(struct drm_device *dev)
3936 struct drm_i915_private *dev_priv = dev->dev_private;
3938 /* deactivate cxsr */
3939 I915_WRITE(DSPFW3, I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN);
3943 * Latency for FIFO fetches is dependent on several factors:
3944 * - memory configuration (speed, channels)
3946 * - current MCH state
3947 * It can be fairly high in some situations, so here we assume a fairly
3948 * pessimal value. It's a tradeoff between extra memory fetches (if we
3949 * set this value too high, the FIFO will fetch frequently to stay full)
3950 * and power consumption (set it too low to save power and we might see
3951 * FIFO underruns and display "flicker").
3953 * A value of 5us seems to be a good balance; safe for very low end
3954 * platforms but not overly aggressive on lower latency configs.
3956 static const int latency_ns = 5000;
3958 static int i9xx_get_fifo_size(struct drm_device *dev, int plane)
3960 struct drm_i915_private *dev_priv = dev->dev_private;
3961 uint32_t dsparb = I915_READ(DSPARB);
3964 size = dsparb & 0x7f;
3966 size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size;
3968 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
3969 plane ? "B" : "A", size);
3974 static int i85x_get_fifo_size(struct drm_device *dev, int plane)
3976 struct drm_i915_private *dev_priv = dev->dev_private;
3977 uint32_t dsparb = I915_READ(DSPARB);
3980 size = dsparb & 0x1ff;
3982 size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size;
3983 size >>= 1; /* Convert to cachelines */
3985 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
3986 plane ? "B" : "A", size);
3991 static int i845_get_fifo_size(struct drm_device *dev, int plane)
3993 struct drm_i915_private *dev_priv = dev->dev_private;
3994 uint32_t dsparb = I915_READ(DSPARB);
3997 size = dsparb & 0x7f;
3998 size >>= 2; /* Convert to cachelines */
4000 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
4007 static int i830_get_fifo_size(struct drm_device *dev, int plane)
4009 struct drm_i915_private *dev_priv = dev->dev_private;
4010 uint32_t dsparb = I915_READ(DSPARB);
4013 size = dsparb & 0x7f;
4014 size >>= 1; /* Convert to cachelines */
4016 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
4017 plane ? "B" : "A", size);
4022 static struct drm_crtc *single_enabled_crtc(struct drm_device *dev)
4024 struct drm_crtc *crtc, *enabled = NULL;
4026 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
4027 if (crtc->enabled && crtc->fb) {
4037 static void pineview_update_wm(struct drm_device *dev)
4039 struct drm_i915_private *dev_priv = dev->dev_private;
4040 struct drm_crtc *crtc;
4041 const struct cxsr_latency *latency;
4045 latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3,
4046 dev_priv->fsb_freq, dev_priv->mem_freq);
4048 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
4049 pineview_disable_cxsr(dev);
4053 crtc = single_enabled_crtc(dev);
4055 int clock = crtc->mode.clock;
4056 int pixel_size = crtc->fb->bits_per_pixel / 8;
4059 wm = intel_calculate_wm(clock, &pineview_display_wm,
4060 pineview_display_wm.fifo_size,
4061 pixel_size, latency->display_sr);
4062 reg = I915_READ(DSPFW1);
4063 reg &= ~DSPFW_SR_MASK;
4064 reg |= wm << DSPFW_SR_SHIFT;
4065 I915_WRITE(DSPFW1, reg);
4066 DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
4069 wm = intel_calculate_wm(clock, &pineview_cursor_wm,
4070 pineview_display_wm.fifo_size,
4071 pixel_size, latency->cursor_sr);
4072 reg = I915_READ(DSPFW3);
4073 reg &= ~DSPFW_CURSOR_SR_MASK;
4074 reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT;
4075 I915_WRITE(DSPFW3, reg);
4077 /* Display HPLL off SR */
4078 wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm,
4079 pineview_display_hplloff_wm.fifo_size,
4080 pixel_size, latency->display_hpll_disable);
4081 reg = I915_READ(DSPFW3);
4082 reg &= ~DSPFW_HPLL_SR_MASK;
4083 reg |= wm & DSPFW_HPLL_SR_MASK;
4084 I915_WRITE(DSPFW3, reg);
4086 /* cursor HPLL off SR */
4087 wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm,
4088 pineview_display_hplloff_wm.fifo_size,
4089 pixel_size, latency->cursor_hpll_disable);
4090 reg = I915_READ(DSPFW3);
4091 reg &= ~DSPFW_HPLL_CURSOR_MASK;
4092 reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT;
4093 I915_WRITE(DSPFW3, reg);
4094 DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
4098 I915_READ(DSPFW3) | PINEVIEW_SELF_REFRESH_EN);
4099 DRM_DEBUG_KMS("Self-refresh is enabled\n");
4101 pineview_disable_cxsr(dev);
4102 DRM_DEBUG_KMS("Self-refresh is disabled\n");
4106 static bool g4x_compute_wm0(struct drm_device *dev,
4108 const struct intel_watermark_params *display,
4109 int display_latency_ns,
4110 const struct intel_watermark_params *cursor,
4111 int cursor_latency_ns,
4115 struct drm_crtc *crtc;
4116 int htotal, hdisplay, clock, pixel_size;
4117 int line_time_us, line_count;
4118 int entries, tlb_miss;
4120 crtc = intel_get_crtc_for_plane(dev, plane);
4121 if (crtc->fb == NULL || !crtc->enabled) {
4122 *cursor_wm = cursor->guard_size;
4123 *plane_wm = display->guard_size;
4127 htotal = crtc->mode.htotal;
4128 hdisplay = crtc->mode.hdisplay;
4129 clock = crtc->mode.clock;
4130 pixel_size = crtc->fb->bits_per_pixel / 8;
4132 /* Use the small buffer method to calculate plane watermark */
4133 entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000;
4134 tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8;
4136 entries += tlb_miss;
4137 entries = DIV_ROUND_UP(entries, display->cacheline_size);
4138 *plane_wm = entries + display->guard_size;
4139 if (*plane_wm > (int)display->max_wm)
4140 *plane_wm = display->max_wm;
4142 /* Use the large buffer method to calculate cursor watermark */
4143 line_time_us = ((htotal * 1000) / clock);
4144 line_count = (cursor_latency_ns / line_time_us + 1000) / 1000;
4145 entries = line_count * 64 * pixel_size;
4146 tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8;
4148 entries += tlb_miss;
4149 entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
4150 *cursor_wm = entries + cursor->guard_size;
4151 if (*cursor_wm > (int)cursor->max_wm)
4152 *cursor_wm = (int)cursor->max_wm;
4158 * Check the wm result.
4160 * If any calculated watermark values is larger than the maximum value that
4161 * can be programmed into the associated watermark register, that watermark
4164 static bool g4x_check_srwm(struct drm_device *dev,
4165 int display_wm, int cursor_wm,
4166 const struct intel_watermark_params *display,
4167 const struct intel_watermark_params *cursor)
4169 DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n",
4170 display_wm, cursor_wm);
4172 if (display_wm > display->max_wm) {
4173 DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n",
4174 display_wm, display->max_wm);
4178 if (cursor_wm > cursor->max_wm) {
4179 DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n",
4180 cursor_wm, cursor->max_wm);
4184 if (!(display_wm || cursor_wm)) {
4185 DRM_DEBUG_KMS("SR latency is 0, disabling\n");
4192 static bool g4x_compute_srwm(struct drm_device *dev,
4195 const struct intel_watermark_params *display,
4196 const struct intel_watermark_params *cursor,
4197 int *display_wm, int *cursor_wm)
4199 struct drm_crtc *crtc;
4200 int hdisplay, htotal, pixel_size, clock;
4201 unsigned long line_time_us;
4202 int line_count, line_size;
4207 *display_wm = *cursor_wm = 0;
4211 crtc = intel_get_crtc_for_plane(dev, plane);
4212 hdisplay = crtc->mode.hdisplay;
4213 htotal = crtc->mode.htotal;
4214 clock = crtc->mode.clock;
4215 pixel_size = crtc->fb->bits_per_pixel / 8;
4217 line_time_us = (htotal * 1000) / clock;
4218 line_count = (latency_ns / line_time_us + 1000) / 1000;
4219 line_size = hdisplay * pixel_size;
4221 /* Use the minimum of the small and large buffer method for primary */
4222 small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
4223 large = line_count * line_size;
4225 entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
4226 *display_wm = entries + display->guard_size;
4228 /* calculate the self-refresh watermark for display cursor */
4229 entries = line_count * pixel_size * 64;
4230 entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
4231 *cursor_wm = entries + cursor->guard_size;
4233 return g4x_check_srwm(dev,
4234 *display_wm, *cursor_wm,
4238 #define single_plane_enabled(mask) is_power_of_2(mask)
4240 static void valleyview_update_wm(struct drm_device *dev)
4242 static const int sr_latency_ns = 12000;
4243 struct drm_i915_private *dev_priv = dev->dev_private;
4244 int planea_wm, planeb_wm, cursora_wm, cursorb_wm;
4245 int plane_sr, cursor_sr;
4246 unsigned int enabled = 0;
4248 if (g4x_compute_wm0(dev, 0,
4249 &valleyview_wm_info, latency_ns,
4250 &valleyview_cursor_wm_info, latency_ns,
4251 &planea_wm, &cursora_wm))
4254 if (g4x_compute_wm0(dev, 1,
4255 &valleyview_wm_info, latency_ns,
4256 &valleyview_cursor_wm_info, latency_ns,
4257 &planeb_wm, &cursorb_wm))
4260 plane_sr = cursor_sr = 0;
4261 if (single_plane_enabled(enabled) &&
4262 g4x_compute_srwm(dev, ffs(enabled) - 1,
4264 &valleyview_wm_info,
4265 &valleyview_cursor_wm_info,
4266 &plane_sr, &cursor_sr))
4267 I915_WRITE(FW_BLC_SELF_VLV, FW_CSPWRDWNEN);
4269 I915_WRITE(FW_BLC_SELF_VLV,
4270 I915_READ(FW_BLC_SELF_VLV) & ~FW_CSPWRDWNEN);
4272 DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n",
4273 planea_wm, cursora_wm,
4274 planeb_wm, cursorb_wm,
4275 plane_sr, cursor_sr);
4278 (plane_sr << DSPFW_SR_SHIFT) |
4279 (cursorb_wm << DSPFW_CURSORB_SHIFT) |
4280 (planeb_wm << DSPFW_PLANEB_SHIFT) |
4283 (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
4284 (cursora_wm << DSPFW_CURSORA_SHIFT));
4286 (I915_READ(DSPFW3) | (cursor_sr << DSPFW_CURSOR_SR_SHIFT)));
4289 static void g4x_update_wm(struct drm_device *dev)
4291 static const int sr_latency_ns = 12000;
4292 struct drm_i915_private *dev_priv = dev->dev_private;
4293 int planea_wm, planeb_wm, cursora_wm, cursorb_wm;
4294 int plane_sr, cursor_sr;
4295 unsigned int enabled = 0;
4297 if (g4x_compute_wm0(dev, 0,
4298 &g4x_wm_info, latency_ns,
4299 &g4x_cursor_wm_info, latency_ns,
4300 &planea_wm, &cursora_wm))
4303 if (g4x_compute_wm0(dev, 1,
4304 &g4x_wm_info, latency_ns,
4305 &g4x_cursor_wm_info, latency_ns,
4306 &planeb_wm, &cursorb_wm))
4309 plane_sr = cursor_sr = 0;
4310 if (single_plane_enabled(enabled) &&
4311 g4x_compute_srwm(dev, ffs(enabled) - 1,
4314 &g4x_cursor_wm_info,
4315 &plane_sr, &cursor_sr))
4316 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
4318 I915_WRITE(FW_BLC_SELF,
4319 I915_READ(FW_BLC_SELF) & ~FW_BLC_SELF_EN);
4321 DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n",
4322 planea_wm, cursora_wm,
4323 planeb_wm, cursorb_wm,
4324 plane_sr, cursor_sr);
4327 (plane_sr << DSPFW_SR_SHIFT) |
4328 (cursorb_wm << DSPFW_CURSORB_SHIFT) |
4329 (planeb_wm << DSPFW_PLANEB_SHIFT) |
4332 (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
4333 (cursora_wm << DSPFW_CURSORA_SHIFT));
4334 /* HPLL off in SR has some issues on G4x... disable it */
4336 (I915_READ(DSPFW3) & ~DSPFW_HPLL_SR_EN) |
4337 (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
4340 static void i965_update_wm(struct drm_device *dev)
4342 struct drm_i915_private *dev_priv = dev->dev_private;
4343 struct drm_crtc *crtc;
4347 /* Calc sr entries for one plane configs */
4348 crtc = single_enabled_crtc(dev);
4350 /* self-refresh has much higher latency */
4351 static const int sr_latency_ns = 12000;
4352 int clock = crtc->mode.clock;
4353 int htotal = crtc->mode.htotal;
4354 int hdisplay = crtc->mode.hdisplay;
4355 int pixel_size = crtc->fb->bits_per_pixel / 8;
4356 unsigned long line_time_us;
4359 line_time_us = ((htotal * 1000) / clock);
4361 /* Use ns/us then divide to preserve precision */
4362 entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
4363 pixel_size * hdisplay;
4364 entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE);
4365 srwm = I965_FIFO_SIZE - entries;
4369 DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n",
4372 entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
4374 entries = DIV_ROUND_UP(entries,
4375 i965_cursor_wm_info.cacheline_size);
4376 cursor_sr = i965_cursor_wm_info.fifo_size -
4377 (entries + i965_cursor_wm_info.guard_size);
4379 if (cursor_sr > i965_cursor_wm_info.max_wm)
4380 cursor_sr = i965_cursor_wm_info.max_wm;
4382 DRM_DEBUG_KMS("self-refresh watermark: display plane %d "
4383 "cursor %d\n", srwm, cursor_sr);
4385 if (IS_CRESTLINE(dev))
4386 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
4388 /* Turn off self refresh if both pipes are enabled */
4389 if (IS_CRESTLINE(dev))
4390 I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
4394 DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
4397 /* 965 has limitations... */
4398 I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) |
4399 (8 << 16) | (8 << 8) | (8 << 0));
4400 I915_WRITE(DSPFW2, (8 << 8) | (8 << 0));
4401 /* update cursor SR watermark */
4402 I915_WRITE(DSPFW3, (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
4405 static void i9xx_update_wm(struct drm_device *dev)
4407 struct drm_i915_private *dev_priv = dev->dev_private;
4408 const struct intel_watermark_params *wm_info;
4413 int planea_wm, planeb_wm;
4414 struct drm_crtc *crtc, *enabled = NULL;
4417 wm_info = &i945_wm_info;
4418 else if (!IS_GEN2(dev))
4419 wm_info = &i915_wm_info;
4421 wm_info = &i855_wm_info;
4423 fifo_size = dev_priv->display.get_fifo_size(dev, 0);
4424 crtc = intel_get_crtc_for_plane(dev, 0);
4425 if (crtc->enabled && crtc->fb) {
4426 planea_wm = intel_calculate_wm(crtc->mode.clock,
4428 crtc->fb->bits_per_pixel / 8,
4432 planea_wm = fifo_size - wm_info->guard_size;
4434 fifo_size = dev_priv->display.get_fifo_size(dev, 1);
4435 crtc = intel_get_crtc_for_plane(dev, 1);
4436 if (crtc->enabled && crtc->fb) {
4437 planeb_wm = intel_calculate_wm(crtc->mode.clock,
4439 crtc->fb->bits_per_pixel / 8,
4441 if (enabled == NULL)
4446 planeb_wm = fifo_size - wm_info->guard_size;
4448 DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
4451 * Overlay gets an aggressive default since video jitter is bad.
4455 /* Play safe and disable self-refresh before adjusting watermarks. */
4456 if (IS_I945G(dev) || IS_I945GM(dev))
4457 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | 0);
4458 else if (IS_I915GM(dev))
4459 I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN);
4461 /* Calc sr entries for one plane configs */
4462 if (HAS_FW_BLC(dev) && enabled) {
4463 /* self-refresh has much higher latency */
4464 static const int sr_latency_ns = 6000;
4465 int clock = enabled->mode.clock;
4466 int htotal = enabled->mode.htotal;
4467 int hdisplay = enabled->mode.hdisplay;
4468 int pixel_size = enabled->fb->bits_per_pixel / 8;
4469 unsigned long line_time_us;
4472 line_time_us = (htotal * 1000) / clock;
4474 /* Use ns/us then divide to preserve precision */
4475 entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
4476 pixel_size * hdisplay;
4477 entries = DIV_ROUND_UP(entries, wm_info->cacheline_size);
4478 DRM_DEBUG_KMS("self-refresh entries: %d\n", entries);
4479 srwm = wm_info->fifo_size - entries;
4483 if (IS_I945G(dev) || IS_I945GM(dev))
4484 I915_WRITE(FW_BLC_SELF,
4485 FW_BLC_SELF_FIFO_MASK | (srwm & 0xff));
4486 else if (IS_I915GM(dev))
4487 I915_WRITE(FW_BLC_SELF, srwm & 0x3f);
4490 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
4491 planea_wm, planeb_wm, cwm, srwm);
4493 fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
4494 fwater_hi = (cwm & 0x1f);
4496 /* Set request length to 8 cachelines per fetch */
4497 fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
4498 fwater_hi = fwater_hi | (1 << 8);
4500 I915_WRITE(FW_BLC, fwater_lo);
4501 I915_WRITE(FW_BLC2, fwater_hi);
4503 if (HAS_FW_BLC(dev)) {
4505 if (IS_I945G(dev) || IS_I945GM(dev))
4506 I915_WRITE(FW_BLC_SELF,
4507 FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN);
4508 else if (IS_I915GM(dev))
4509 I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN);
4510 DRM_DEBUG_KMS("memory self refresh enabled\n");
4512 DRM_DEBUG_KMS("memory self refresh disabled\n");
4516 static void i830_update_wm(struct drm_device *dev)
4518 struct drm_i915_private *dev_priv = dev->dev_private;
4519 struct drm_crtc *crtc;
4523 crtc = single_enabled_crtc(dev);
4527 planea_wm = intel_calculate_wm(crtc->mode.clock, &i830_wm_info,
4528 dev_priv->display.get_fifo_size(dev, 0),
4529 crtc->fb->bits_per_pixel / 8,
4531 fwater_lo = I915_READ(FW_BLC) & ~0xfff;
4532 fwater_lo |= (3<<8) | planea_wm;
4534 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm);
4536 I915_WRITE(FW_BLC, fwater_lo);
4539 #define ILK_LP0_PLANE_LATENCY 700
4540 #define ILK_LP0_CURSOR_LATENCY 1300
4543 * Check the wm result.
4545 * If any calculated watermark values is larger than the maximum value that
4546 * can be programmed into the associated watermark register, that watermark
4549 static bool ironlake_check_srwm(struct drm_device *dev, int level,
4550 int fbc_wm, int display_wm, int cursor_wm,
4551 const struct intel_watermark_params *display,
4552 const struct intel_watermark_params *cursor)
4554 struct drm_i915_private *dev_priv = dev->dev_private;
4556 DRM_DEBUG_KMS("watermark %d: display plane %d, fbc lines %d,"
4557 " cursor %d\n", level, display_wm, fbc_wm, cursor_wm);
4559 if (fbc_wm > SNB_FBC_MAX_SRWM) {
4560 DRM_DEBUG_KMS("fbc watermark(%d) is too large(%d), disabling wm%d+\n",
4561 fbc_wm, SNB_FBC_MAX_SRWM, level);
4563 /* fbc has it's own way to disable FBC WM */
4564 I915_WRITE(DISP_ARB_CTL,
4565 I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS);
4569 if (display_wm > display->max_wm) {
4570 DRM_DEBUG_KMS("display watermark(%d) is too large(%d), disabling wm%d+\n",
4571 display_wm, SNB_DISPLAY_MAX_SRWM, level);
4575 if (cursor_wm > cursor->max_wm) {
4576 DRM_DEBUG_KMS("cursor watermark(%d) is too large(%d), disabling wm%d+\n",
4577 cursor_wm, SNB_CURSOR_MAX_SRWM, level);
4581 if (!(fbc_wm || display_wm || cursor_wm)) {
4582 DRM_DEBUG_KMS("latency %d is 0, disabling wm%d+\n", level, level);
4590 * Compute watermark values of WM[1-3],
4592 static bool ironlake_compute_srwm(struct drm_device *dev, int level, int plane,
4594 const struct intel_watermark_params *display,
4595 const struct intel_watermark_params *cursor,
4596 int *fbc_wm, int *display_wm, int *cursor_wm)
4598 struct drm_crtc *crtc;
4599 unsigned long line_time_us;
4600 int hdisplay, htotal, pixel_size, clock;
4601 int line_count, line_size;
4606 *fbc_wm = *display_wm = *cursor_wm = 0;
4610 crtc = intel_get_crtc_for_plane(dev, plane);
4611 hdisplay = crtc->mode.hdisplay;
4612 htotal = crtc->mode.htotal;
4613 clock = crtc->mode.clock;
4614 pixel_size = crtc->fb->bits_per_pixel / 8;
4616 line_time_us = (htotal * 1000) / clock;
4617 line_count = (latency_ns / line_time_us + 1000) / 1000;
4618 line_size = hdisplay * pixel_size;
4620 /* Use the minimum of the small and large buffer method for primary */
4621 small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
4622 large = line_count * line_size;
4624 entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
4625 *display_wm = entries + display->guard_size;
4629 * FBC WM = ((Final Primary WM * 64) / number of bytes per line) + 2
4631 *fbc_wm = DIV_ROUND_UP(*display_wm * 64, line_size) + 2;
4633 /* calculate the self-refresh watermark for display cursor */
4634 entries = line_count * pixel_size * 64;
4635 entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
4636 *cursor_wm = entries + cursor->guard_size;
4638 return ironlake_check_srwm(dev, level,
4639 *fbc_wm, *display_wm, *cursor_wm,
4643 static void ironlake_update_wm(struct drm_device *dev)
4645 struct drm_i915_private *dev_priv = dev->dev_private;
4646 int fbc_wm, plane_wm, cursor_wm;
4647 unsigned int enabled;
4650 if (g4x_compute_wm0(dev, 0,
4651 &ironlake_display_wm_info,
4652 ILK_LP0_PLANE_LATENCY,
4653 &ironlake_cursor_wm_info,
4654 ILK_LP0_CURSOR_LATENCY,
4655 &plane_wm, &cursor_wm)) {
4656 I915_WRITE(WM0_PIPEA_ILK,
4657 (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
4658 DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
4659 " plane %d, " "cursor: %d\n",
4660 plane_wm, cursor_wm);
4664 if (g4x_compute_wm0(dev, 1,
4665 &ironlake_display_wm_info,
4666 ILK_LP0_PLANE_LATENCY,
4667 &ironlake_cursor_wm_info,
4668 ILK_LP0_CURSOR_LATENCY,
4669 &plane_wm, &cursor_wm)) {
4670 I915_WRITE(WM0_PIPEB_ILK,
4671 (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
4672 DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
4673 " plane %d, cursor: %d\n",
4674 plane_wm, cursor_wm);
4679 * Calculate and update the self-refresh watermark only when one
4680 * display plane is used.
4682 I915_WRITE(WM3_LP_ILK, 0);
4683 I915_WRITE(WM2_LP_ILK, 0);
4684 I915_WRITE(WM1_LP_ILK, 0);
4686 if (!single_plane_enabled(enabled))
4688 enabled = ffs(enabled) - 1;
4691 if (!ironlake_compute_srwm(dev, 1, enabled,
4692 ILK_READ_WM1_LATENCY() * 500,
4693 &ironlake_display_srwm_info,
4694 &ironlake_cursor_srwm_info,
4695 &fbc_wm, &plane_wm, &cursor_wm))
4698 I915_WRITE(WM1_LP_ILK,
4700 (ILK_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4701 (fbc_wm << WM1_LP_FBC_SHIFT) |
4702 (plane_wm << WM1_LP_SR_SHIFT) |
4706 if (!ironlake_compute_srwm(dev, 2, enabled,
4707 ILK_READ_WM2_LATENCY() * 500,
4708 &ironlake_display_srwm_info,
4709 &ironlake_cursor_srwm_info,
4710 &fbc_wm, &plane_wm, &cursor_wm))
4713 I915_WRITE(WM2_LP_ILK,
4715 (ILK_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4716 (fbc_wm << WM1_LP_FBC_SHIFT) |
4717 (plane_wm << WM1_LP_SR_SHIFT) |
4721 * WM3 is unsupported on ILK, probably because we don't have latency
4722 * data for that power state
4726 void sandybridge_update_wm(struct drm_device *dev)
4728 struct drm_i915_private *dev_priv = dev->dev_private;
4729 int latency = SNB_READ_WM0_LATENCY() * 100; /* In unit 0.1us */
4731 int fbc_wm, plane_wm, cursor_wm;
4732 unsigned int enabled;
4735 if (g4x_compute_wm0(dev, 0,
4736 &sandybridge_display_wm_info, latency,
4737 &sandybridge_cursor_wm_info, latency,
4738 &plane_wm, &cursor_wm)) {
4739 val = I915_READ(WM0_PIPEA_ILK);
4740 val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK);
4741 I915_WRITE(WM0_PIPEA_ILK, val |
4742 ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm));
4743 DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
4744 " plane %d, " "cursor: %d\n",
4745 plane_wm, cursor_wm);
4749 if (g4x_compute_wm0(dev, 1,
4750 &sandybridge_display_wm_info, latency,
4751 &sandybridge_cursor_wm_info, latency,
4752 &plane_wm, &cursor_wm)) {
4753 val = I915_READ(WM0_PIPEB_ILK);
4754 val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK);
4755 I915_WRITE(WM0_PIPEB_ILK, val |
4756 ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm));
4757 DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
4758 " plane %d, cursor: %d\n",
4759 plane_wm, cursor_wm);
4763 /* IVB has 3 pipes */
4764 if (IS_IVYBRIDGE(dev) &&
4765 g4x_compute_wm0(dev, 2,
4766 &sandybridge_display_wm_info, latency,
4767 &sandybridge_cursor_wm_info, latency,
4768 &plane_wm, &cursor_wm)) {
4769 val = I915_READ(WM0_PIPEC_IVB);
4770 val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK);
4771 I915_WRITE(WM0_PIPEC_IVB, val |
4772 ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm));
4773 DRM_DEBUG_KMS("FIFO watermarks For pipe C -"
4774 " plane %d, cursor: %d\n",
4775 plane_wm, cursor_wm);
4780 * Calculate and update the self-refresh watermark only when one
4781 * display plane is used.
4783 * SNB support 3 levels of watermark.
4785 * WM1/WM2/WM2 watermarks have to be enabled in the ascending order,
4786 * and disabled in the descending order
4789 I915_WRITE(WM3_LP_ILK, 0);
4790 I915_WRITE(WM2_LP_ILK, 0);
4791 I915_WRITE(WM1_LP_ILK, 0);
4793 if (!single_plane_enabled(enabled) ||
4794 dev_priv->sprite_scaling_enabled)
4796 enabled = ffs(enabled) - 1;
4799 if (!ironlake_compute_srwm(dev, 1, enabled,
4800 SNB_READ_WM1_LATENCY() * 500,
4801 &sandybridge_display_srwm_info,
4802 &sandybridge_cursor_srwm_info,
4803 &fbc_wm, &plane_wm, &cursor_wm))
4806 I915_WRITE(WM1_LP_ILK,
4808 (SNB_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4809 (fbc_wm << WM1_LP_FBC_SHIFT) |
4810 (plane_wm << WM1_LP_SR_SHIFT) |
4814 if (!ironlake_compute_srwm(dev, 2, enabled,
4815 SNB_READ_WM2_LATENCY() * 500,
4816 &sandybridge_display_srwm_info,
4817 &sandybridge_cursor_srwm_info,
4818 &fbc_wm, &plane_wm, &cursor_wm))
4821 I915_WRITE(WM2_LP_ILK,
4823 (SNB_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4824 (fbc_wm << WM1_LP_FBC_SHIFT) |
4825 (plane_wm << WM1_LP_SR_SHIFT) |
4829 if (!ironlake_compute_srwm(dev, 3, enabled,
4830 SNB_READ_WM3_LATENCY() * 500,
4831 &sandybridge_display_srwm_info,
4832 &sandybridge_cursor_srwm_info,
4833 &fbc_wm, &plane_wm, &cursor_wm))
4836 I915_WRITE(WM3_LP_ILK,
4838 (SNB_READ_WM3_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4839 (fbc_wm << WM1_LP_FBC_SHIFT) |
4840 (plane_wm << WM1_LP_SR_SHIFT) |
4845 sandybridge_compute_sprite_wm(struct drm_device *dev, int plane,
4846 uint32_t sprite_width, int pixel_size,
4847 const struct intel_watermark_params *display,
4848 int display_latency_ns, int *sprite_wm)
4850 struct drm_crtc *crtc;
4852 int entries, tlb_miss;
4854 crtc = intel_get_crtc_for_plane(dev, plane);
4855 if (crtc->fb == NULL || !crtc->enabled) {
4856 *sprite_wm = display->guard_size;
4860 clock = crtc->mode.clock;
4862 /* Use the small buffer method to calculate the sprite watermark */
4863 entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000;
4864 tlb_miss = display->fifo_size*display->cacheline_size -
4867 entries += tlb_miss;
4868 entries = DIV_ROUND_UP(entries, display->cacheline_size);
4869 *sprite_wm = entries + display->guard_size;
4870 if (*sprite_wm > (int)display->max_wm)
4871 *sprite_wm = display->max_wm;
4877 sandybridge_compute_sprite_srwm(struct drm_device *dev, int plane,
4878 uint32_t sprite_width, int pixel_size,
4879 const struct intel_watermark_params *display,
4880 int latency_ns, int *sprite_wm)
4882 struct drm_crtc *crtc;
4883 unsigned long line_time_us;
4885 int line_count, line_size;
4894 crtc = intel_get_crtc_for_plane(dev, plane);
4895 clock = crtc->mode.clock;
4897 line_time_us = (sprite_width * 1000) / clock;
4898 line_count = (latency_ns / line_time_us + 1000) / 1000;
4899 line_size = sprite_width * pixel_size;
4901 /* Use the minimum of the small and large buffer method for primary */
4902 small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
4903 large = line_count * line_size;
4905 entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
4906 *sprite_wm = entries + display->guard_size;
4908 return *sprite_wm > 0x3ff ? false : true;
4911 static void sandybridge_update_sprite_wm(struct drm_device *dev, int pipe,
4912 uint32_t sprite_width, int pixel_size)
4914 struct drm_i915_private *dev_priv = dev->dev_private;
4915 int latency = SNB_READ_WM0_LATENCY() * 100; /* In unit 0.1us */
4922 reg = WM0_PIPEA_ILK;
4925 reg = WM0_PIPEB_ILK;
4928 reg = WM0_PIPEC_IVB;
4931 return; /* bad pipe */
4934 ret = sandybridge_compute_sprite_wm(dev, pipe, sprite_width, pixel_size,
4935 &sandybridge_display_wm_info,
4936 latency, &sprite_wm);
4938 DRM_DEBUG_KMS("failed to compute sprite wm for pipe %d\n",
4943 val = I915_READ(reg);
4944 val &= ~WM0_PIPE_SPRITE_MASK;
4945 I915_WRITE(reg, val | (sprite_wm << WM0_PIPE_SPRITE_SHIFT));
4946 DRM_DEBUG_KMS("sprite watermarks For pipe %d - %d\n", pipe, sprite_wm);
4949 ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width,
4951 &sandybridge_display_srwm_info,
4952 SNB_READ_WM1_LATENCY() * 500,
4955 DRM_DEBUG_KMS("failed to compute sprite lp1 wm on pipe %d\n",
4959 I915_WRITE(WM1S_LP_ILK, sprite_wm);
4961 /* Only IVB has two more LP watermarks for sprite */
4962 if (!IS_IVYBRIDGE(dev))
4965 ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width,
4967 &sandybridge_display_srwm_info,
4968 SNB_READ_WM2_LATENCY() * 500,
4971 DRM_DEBUG_KMS("failed to compute sprite lp2 wm on pipe %d\n",
4975 I915_WRITE(WM2S_LP_IVB, sprite_wm);
4977 ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width,
4979 &sandybridge_display_srwm_info,
4980 SNB_READ_WM3_LATENCY() * 500,
4983 DRM_DEBUG_KMS("failed to compute sprite lp3 wm on pipe %d\n",
4987 I915_WRITE(WM3S_LP_IVB, sprite_wm);
4991 * intel_update_watermarks - update FIFO watermark values based on current modes
4993 * Calculate watermark values for the various WM regs based on current mode
4994 * and plane configuration.
4996 * There are several cases to deal with here:
4997 * - normal (i.e. non-self-refresh)
4998 * - self-refresh (SR) mode
4999 * - lines are large relative to FIFO size (buffer can hold up to 2)
5000 * - lines are small relative to FIFO size (buffer can hold more than 2
5001 * lines), so need to account for TLB latency
5003 * The normal calculation is:
5004 * watermark = dotclock * bytes per pixel * latency
5005 * where latency is platform & configuration dependent (we assume pessimal
5008 * The SR calculation is:
5009 * watermark = (trunc(latency/line time)+1) * surface width *
5012 * line time = htotal / dotclock
5013 * surface width = hdisplay for normal plane and 64 for cursor
5014 * and latency is assumed to be high, as above.
5016 * The final value programmed to the register should always be rounded up,
5017 * and include an extra 2 entries to account for clock crossings.
5019 * We don't use the sprite, so we can ignore that. And on Crestline we have
5020 * to set the non-SR watermarks to 8.
5022 static void intel_update_watermarks(struct drm_device *dev)
5024 struct drm_i915_private *dev_priv = dev->dev_private;
5026 if (dev_priv->display.update_wm)
5027 dev_priv->display.update_wm(dev);
5030 void intel_update_sprite_watermarks(struct drm_device *dev, int pipe,
5031 uint32_t sprite_width, int pixel_size)
5033 struct drm_i915_private *dev_priv = dev->dev_private;
5035 if (dev_priv->display.update_sprite_wm)
5036 dev_priv->display.update_sprite_wm(dev, pipe, sprite_width,
5040 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
5042 if (i915_panel_use_ssc >= 0)
5043 return i915_panel_use_ssc != 0;
5044 return dev_priv->lvds_use_ssc
5045 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
5049 * intel_choose_pipe_bpp_dither - figure out what color depth the pipe should send
5050 * @crtc: CRTC structure
5051 * @mode: requested mode
5053 * A pipe may be connected to one or more outputs. Based on the depth of the
5054 * attached framebuffer, choose a good color depth to use on the pipe.
5056 * If possible, match the pipe depth to the fb depth. In some cases, this
5057 * isn't ideal, because the connected output supports a lesser or restricted
5058 * set of depths. Resolve that here:
5059 * LVDS typically supports only 6bpc, so clamp down in that case
5060 * HDMI supports only 8bpc or 12bpc, so clamp to 8bpc with dither for 10bpc
5061 * Displays may support a restricted set as well, check EDID and clamp as
5063 * DP may want to dither down to 6bpc to fit larger modes
5066 * Dithering requirement (i.e. false if display bpc and pipe bpc match,
5067 * true if they don't match).
5069 static bool intel_choose_pipe_bpp_dither(struct drm_crtc *crtc,
5070 unsigned int *pipe_bpp,
5071 struct drm_display_mode *mode)
5073 struct drm_device *dev = crtc->dev;
5074 struct drm_i915_private *dev_priv = dev->dev_private;
5075 struct drm_encoder *encoder;
5076 struct drm_connector *connector;
5077 unsigned int display_bpc = UINT_MAX, bpc;
5079 /* Walk the encoders & connectors on this crtc, get min bpc */
5080 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
5081 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
5083 if (encoder->crtc != crtc)
5086 if (intel_encoder->type == INTEL_OUTPUT_LVDS) {
5087 unsigned int lvds_bpc;
5089 if ((I915_READ(PCH_LVDS) & LVDS_A3_POWER_MASK) ==
5095 if (lvds_bpc < display_bpc) {
5096 DRM_DEBUG_KMS("clamping display bpc (was %d) to LVDS (%d)\n", display_bpc, lvds_bpc);
5097 display_bpc = lvds_bpc;
5102 if (intel_encoder->type == INTEL_OUTPUT_EDP) {
5103 /* Use VBT settings if we have an eDP panel */
5104 unsigned int edp_bpc = dev_priv->edp.bpp / 3;
5106 if (edp_bpc < display_bpc) {
5107 DRM_DEBUG_KMS("clamping display bpc (was %d) to eDP (%d)\n", display_bpc, edp_bpc);
5108 display_bpc = edp_bpc;
5113 /* Not one of the known troublemakers, check the EDID */
5114 list_for_each_entry(connector, &dev->mode_config.connector_list,
5116 if (connector->encoder != encoder)
5119 /* Don't use an invalid EDID bpc value */
5120 if (connector->display_info.bpc &&
5121 connector->display_info.bpc < display_bpc) {
5122 DRM_DEBUG_KMS("clamping display bpc (was %d) to EDID reported max of %d\n", display_bpc, connector->display_info.bpc);
5123 display_bpc = connector->display_info.bpc;
5128 * HDMI is either 12 or 8, so if the display lets 10bpc sneak
5129 * through, clamp it down. (Note: >12bpc will be caught below.)
5131 if (intel_encoder->type == INTEL_OUTPUT_HDMI) {
5132 if (display_bpc > 8 && display_bpc < 12) {
5133 DRM_DEBUG_KMS("forcing bpc to 12 for HDMI\n");
5136 DRM_DEBUG_KMS("forcing bpc to 8 for HDMI\n");
5142 if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
5143 DRM_DEBUG_KMS("Dithering DP to 6bpc\n");
5148 * We could just drive the pipe at the highest bpc all the time and
5149 * enable dithering as needed, but that costs bandwidth. So choose
5150 * the minimum value that expresses the full color range of the fb but
5151 * also stays within the max display bpc discovered above.
5154 switch (crtc->fb->depth) {
5156 bpc = 8; /* since we go through a colormap */
5160 bpc = 6; /* min is 18bpp */
5172 DRM_DEBUG("unsupported depth, assuming 24 bits\n");
5173 bpc = min((unsigned int)8, display_bpc);
5177 display_bpc = min(display_bpc, bpc);
5179 DRM_DEBUG_KMS("setting pipe bpc to %d (max display bpc %d)\n",
5182 *pipe_bpp = display_bpc * 3;
5184 return display_bpc != bpc;
5187 static int i9xx_get_refclk(struct drm_crtc *crtc, int num_connectors)
5189 struct drm_device *dev = crtc->dev;
5190 struct drm_i915_private *dev_priv = dev->dev_private;
5193 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
5194 intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
5195 refclk = dev_priv->lvds_ssc_freq * 1000;
5196 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
5198 } else if (!IS_GEN2(dev)) {
5207 static void i9xx_adjust_sdvo_tv_clock(struct drm_display_mode *adjusted_mode,
5208 intel_clock_t *clock)
5210 /* SDVO TV has fixed PLL values depend on its clock range,
5211 this mirrors vbios setting. */
5212 if (adjusted_mode->clock >= 100000
5213 && adjusted_mode->clock < 140500) {
5219 } else if (adjusted_mode->clock >= 140500
5220 && adjusted_mode->clock <= 200000) {
5229 static void i9xx_update_pll_dividers(struct drm_crtc *crtc,
5230 intel_clock_t *clock,
5231 intel_clock_t *reduced_clock)
5233 struct drm_device *dev = crtc->dev;
5234 struct drm_i915_private *dev_priv = dev->dev_private;
5235 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5236 int pipe = intel_crtc->pipe;
5239 if (IS_PINEVIEW(dev)) {
5240 fp = (1 << clock->n) << 16 | clock->m1 << 8 | clock->m2;
5242 fp2 = (1 << reduced_clock->n) << 16 |
5243 reduced_clock->m1 << 8 | reduced_clock->m2;
5245 fp = clock->n << 16 | clock->m1 << 8 | clock->m2;
5247 fp2 = reduced_clock->n << 16 | reduced_clock->m1 << 8 |
5251 I915_WRITE(FP0(pipe), fp);
5253 intel_crtc->lowfreq_avail = false;
5254 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
5255 reduced_clock && i915_powersave) {
5256 I915_WRITE(FP1(pipe), fp2);
5257 intel_crtc->lowfreq_avail = true;
5259 I915_WRITE(FP1(pipe), fp);
5263 static void intel_update_lvds(struct drm_crtc *crtc, intel_clock_t *clock,
5264 struct drm_display_mode *adjusted_mode)
5266 struct drm_device *dev = crtc->dev;
5267 struct drm_i915_private *dev_priv = dev->dev_private;
5268 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5269 int pipe = intel_crtc->pipe;
5270 u32 temp, lvds_sync = 0;
5272 temp = I915_READ(LVDS);
5273 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
5275 temp |= LVDS_PIPEB_SELECT;
5277 temp &= ~LVDS_PIPEB_SELECT;
5279 /* set the corresponsding LVDS_BORDER bit */
5280 temp |= dev_priv->lvds_border_bits;
5281 /* Set the B0-B3 data pairs corresponding to whether we're going to
5282 * set the DPLLs for dual-channel mode or not.
5285 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
5287 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
5289 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
5290 * appropriately here, but we need to look more thoroughly into how
5291 * panels behave in the two modes.
5293 /* set the dithering flag on LVDS as needed */
5294 if (INTEL_INFO(dev)->gen >= 4) {
5295 if (dev_priv->lvds_dither)
5296 temp |= LVDS_ENABLE_DITHER;
5298 temp &= ~LVDS_ENABLE_DITHER;
5300 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
5301 lvds_sync |= LVDS_HSYNC_POLARITY;
5302 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
5303 lvds_sync |= LVDS_VSYNC_POLARITY;
5304 if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
5306 char flags[2] = "-+";
5307 DRM_INFO("Changing LVDS panel from "
5308 "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
5309 flags[!(temp & LVDS_HSYNC_POLARITY)],
5310 flags[!(temp & LVDS_VSYNC_POLARITY)],
5311 flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
5312 flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
5313 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
5316 I915_WRITE(LVDS, temp);
5319 static void i9xx_update_pll(struct drm_crtc *crtc,
5320 struct drm_display_mode *mode,
5321 struct drm_display_mode *adjusted_mode,
5322 intel_clock_t *clock, intel_clock_t *reduced_clock,
5325 struct drm_device *dev = crtc->dev;
5326 struct drm_i915_private *dev_priv = dev->dev_private;
5327 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5328 int pipe = intel_crtc->pipe;
5332 is_sdvo = intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ||
5333 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
5335 dpll = DPLL_VGA_MODE_DIS;
5337 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
5338 dpll |= DPLLB_MODE_LVDS;
5340 dpll |= DPLLB_MODE_DAC_SERIAL;
5342 int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
5343 if (pixel_multiplier > 1) {
5344 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
5345 dpll |= (pixel_multiplier - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
5347 dpll |= DPLL_DVO_HIGH_SPEED;
5349 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
5350 dpll |= DPLL_DVO_HIGH_SPEED;
5352 /* compute bitmask from p1 value */
5353 if (IS_PINEVIEW(dev))
5354 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
5356 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
5357 if (IS_G4X(dev) && reduced_clock)
5358 dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
5360 switch (clock->p2) {
5362 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
5365 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
5368 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
5371 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
5374 if (INTEL_INFO(dev)->gen >= 4)
5375 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
5377 if (is_sdvo && intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
5378 dpll |= PLL_REF_INPUT_TVCLKINBC;
5379 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
5380 /* XXX: just matching BIOS for now */
5381 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
5383 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
5384 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
5385 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
5387 dpll |= PLL_REF_INPUT_DREFCLK;
5389 dpll |= DPLL_VCO_ENABLE;
5390 I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
5391 POSTING_READ(DPLL(pipe));
5394 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
5395 * This is an exception to the general rule that mode_set doesn't turn
5398 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
5399 intel_update_lvds(crtc, clock, adjusted_mode);
5401 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
5402 intel_dp_set_m_n(crtc, mode, adjusted_mode);
5404 I915_WRITE(DPLL(pipe), dpll);
5406 /* Wait for the clocks to stabilize. */
5407 POSTING_READ(DPLL(pipe));
5410 if (INTEL_INFO(dev)->gen >= 4) {
5413 temp = intel_mode_get_pixel_multiplier(adjusted_mode);
5415 temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
5419 I915_WRITE(DPLL_MD(pipe), temp);
5421 /* The pixel multiplier can only be updated once the
5422 * DPLL is enabled and the clocks are stable.
5424 * So write it again.
5426 I915_WRITE(DPLL(pipe), dpll);
5430 static void i8xx_update_pll(struct drm_crtc *crtc,
5431 struct drm_display_mode *adjusted_mode,
5432 intel_clock_t *clock,
5435 struct drm_device *dev = crtc->dev;
5436 struct drm_i915_private *dev_priv = dev->dev_private;
5437 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5438 int pipe = intel_crtc->pipe;
5441 dpll = DPLL_VGA_MODE_DIS;
5443 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
5444 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
5447 dpll |= PLL_P1_DIVIDE_BY_TWO;
5449 dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
5451 dpll |= PLL_P2_DIVIDE_BY_4;
5454 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
5455 /* XXX: just matching BIOS for now */
5456 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
5458 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
5459 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
5460 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
5462 dpll |= PLL_REF_INPUT_DREFCLK;
5464 dpll |= DPLL_VCO_ENABLE;
5465 I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
5466 POSTING_READ(DPLL(pipe));
5469 I915_WRITE(DPLL(pipe), dpll);
5471 /* Wait for the clocks to stabilize. */
5472 POSTING_READ(DPLL(pipe));
5475 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
5476 * This is an exception to the general rule that mode_set doesn't turn
5479 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
5480 intel_update_lvds(crtc, clock, adjusted_mode);
5482 /* The pixel multiplier can only be updated once the
5483 * DPLL is enabled and the clocks are stable.
5485 * So write it again.
5487 I915_WRITE(DPLL(pipe), dpll);
5490 static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
5491 struct drm_display_mode *mode,
5492 struct drm_display_mode *adjusted_mode,
5494 struct drm_framebuffer *old_fb)
5496 struct drm_device *dev = crtc->dev;
5497 struct drm_i915_private *dev_priv = dev->dev_private;
5498 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5499 int pipe = intel_crtc->pipe;
5500 int plane = intel_crtc->plane;
5501 int refclk, num_connectors = 0;
5502 intel_clock_t clock, reduced_clock;
5503 u32 dspcntr, pipeconf, vsyncshift;
5504 bool ok, has_reduced_clock = false, is_sdvo = false;
5505 bool is_lvds = false, is_tv = false, is_dp = false;
5506 struct drm_mode_config *mode_config = &dev->mode_config;
5507 struct intel_encoder *encoder;
5508 const intel_limit_t *limit;
5511 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
5512 if (encoder->base.crtc != crtc)
5515 switch (encoder->type) {
5516 case INTEL_OUTPUT_LVDS:
5519 case INTEL_OUTPUT_SDVO:
5520 case INTEL_OUTPUT_HDMI:
5522 if (encoder->needs_tv_clock)
5525 case INTEL_OUTPUT_TVOUT:
5528 case INTEL_OUTPUT_DISPLAYPORT:
5536 refclk = i9xx_get_refclk(crtc, num_connectors);
5539 * Returns a set of divisors for the desired target clock with the given
5540 * refclk, or FALSE. The returned values represent the clock equation:
5541 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
5543 limit = intel_limit(crtc, refclk);
5544 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
5547 DRM_ERROR("Couldn't find PLL settings for mode!\n");
5551 /* Ensure that the cursor is valid for the new mode before changing... */
5552 intel_crtc_update_cursor(crtc, true);
5554 if (is_lvds && dev_priv->lvds_downclock_avail) {
5556 * Ensure we match the reduced clock's P to the target clock.
5557 * If the clocks don't match, we can't switch the display clock
5558 * by using the FP0/FP1. In such case we will disable the LVDS
5559 * downclock feature.
5561 has_reduced_clock = limit->find_pll(limit, crtc,
5562 dev_priv->lvds_downclock,
5568 if (is_sdvo && is_tv)
5569 i9xx_adjust_sdvo_tv_clock(adjusted_mode, &clock);
5571 i9xx_update_pll_dividers(crtc, &clock, has_reduced_clock ?
5572 &reduced_clock : NULL);
5575 i8xx_update_pll(crtc, adjusted_mode, &clock, num_connectors);
5577 i9xx_update_pll(crtc, mode, adjusted_mode, &clock,
5578 has_reduced_clock ? &reduced_clock : NULL,
5581 /* setup pipeconf */
5582 pipeconf = I915_READ(PIPECONF(pipe));
5584 /* Set up the display plane register */
5585 dspcntr = DISPPLANE_GAMMA_ENABLE;
5588 dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
5590 dspcntr |= DISPPLANE_SEL_PIPE_B;
5592 if (pipe == 0 && INTEL_INFO(dev)->gen < 4) {
5593 /* Enable pixel doubling when the dot clock is > 90% of the (display)
5596 * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
5600 dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
5601 pipeconf |= PIPECONF_DOUBLE_WIDE;
5603 pipeconf &= ~PIPECONF_DOUBLE_WIDE;
5606 /* default to 8bpc */
5607 pipeconf &= ~(PIPECONF_BPP_MASK | PIPECONF_DITHER_EN);
5609 if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
5610 pipeconf |= PIPECONF_BPP_6 |
5611 PIPECONF_DITHER_EN |
5612 PIPECONF_DITHER_TYPE_SP;
5616 DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
5617 drm_mode_debug_printmodeline(mode);
5619 if (HAS_PIPE_CXSR(dev)) {
5620 if (intel_crtc->lowfreq_avail) {
5621 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
5622 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
5624 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
5625 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
5629 pipeconf &= ~PIPECONF_INTERLACE_MASK;
5630 if (!IS_GEN2(dev) &&
5631 adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
5632 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
5633 /* the chip adds 2 halflines automatically */
5634 adjusted_mode->crtc_vtotal -= 1;
5635 adjusted_mode->crtc_vblank_end -= 1;
5636 vsyncshift = adjusted_mode->crtc_hsync_start
5637 - adjusted_mode->crtc_htotal/2;
5639 pipeconf |= PIPECONF_PROGRESSIVE;
5644 I915_WRITE(VSYNCSHIFT(pipe), vsyncshift);
5646 I915_WRITE(HTOTAL(pipe),
5647 (adjusted_mode->crtc_hdisplay - 1) |
5648 ((adjusted_mode->crtc_htotal - 1) << 16));
5649 I915_WRITE(HBLANK(pipe),
5650 (adjusted_mode->crtc_hblank_start - 1) |
5651 ((adjusted_mode->crtc_hblank_end - 1) << 16));
5652 I915_WRITE(HSYNC(pipe),
5653 (adjusted_mode->crtc_hsync_start - 1) |
5654 ((adjusted_mode->crtc_hsync_end - 1) << 16));
5656 I915_WRITE(VTOTAL(pipe),
5657 (adjusted_mode->crtc_vdisplay - 1) |
5658 ((adjusted_mode->crtc_vtotal - 1) << 16));
5659 I915_WRITE(VBLANK(pipe),
5660 (adjusted_mode->crtc_vblank_start - 1) |
5661 ((adjusted_mode->crtc_vblank_end - 1) << 16));
5662 I915_WRITE(VSYNC(pipe),
5663 (adjusted_mode->crtc_vsync_start - 1) |
5664 ((adjusted_mode->crtc_vsync_end - 1) << 16));
5666 /* pipesrc and dspsize control the size that is scaled from,
5667 * which should always be the user's requested size.
5669 I915_WRITE(DSPSIZE(plane),
5670 ((mode->vdisplay - 1) << 16) |
5671 (mode->hdisplay - 1));
5672 I915_WRITE(DSPPOS(plane), 0);
5673 I915_WRITE(PIPESRC(pipe),
5674 ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
5676 I915_WRITE(PIPECONF(pipe), pipeconf);
5677 POSTING_READ(PIPECONF(pipe));
5678 intel_enable_pipe(dev_priv, pipe, false);
5680 intel_wait_for_vblank(dev, pipe);
5682 I915_WRITE(DSPCNTR(plane), dspcntr);
5683 POSTING_READ(DSPCNTR(plane));
5684 intel_enable_plane(dev_priv, plane, pipe);
5686 ret = intel_pipe_set_base(crtc, x, y, old_fb);
5688 intel_update_watermarks(dev);
5694 * Initialize reference clocks when the driver loads
5696 void ironlake_init_pch_refclk(struct drm_device *dev)
5698 struct drm_i915_private *dev_priv = dev->dev_private;
5699 struct drm_mode_config *mode_config = &dev->mode_config;
5700 struct intel_encoder *encoder;
5702 bool has_lvds = false;
5703 bool has_cpu_edp = false;
5704 bool has_pch_edp = false;
5705 bool has_panel = false;
5706 bool has_ck505 = false;
5707 bool can_ssc = false;
5709 /* We need to take the global config into account */
5710 list_for_each_entry(encoder, &mode_config->encoder_list,
5712 switch (encoder->type) {
5713 case INTEL_OUTPUT_LVDS:
5717 case INTEL_OUTPUT_EDP:
5719 if (intel_encoder_is_pch_edp(&encoder->base))
5727 if (HAS_PCH_IBX(dev)) {
5728 has_ck505 = dev_priv->display_clock_mode;
5729 can_ssc = has_ck505;
5735 DRM_DEBUG_KMS("has_panel %d has_lvds %d has_pch_edp %d has_cpu_edp %d has_ck505 %d\n",
5736 has_panel, has_lvds, has_pch_edp, has_cpu_edp,
5739 /* Ironlake: try to setup display ref clock before DPLL
5740 * enabling. This is only under driver's control after
5741 * PCH B stepping, previous chipset stepping should be
5742 * ignoring this setting.
5744 temp = I915_READ(PCH_DREF_CONTROL);
5745 /* Always enable nonspread source */
5746 temp &= ~DREF_NONSPREAD_SOURCE_MASK;
5749 temp |= DREF_NONSPREAD_CK505_ENABLE;
5751 temp |= DREF_NONSPREAD_SOURCE_ENABLE;
5754 temp &= ~DREF_SSC_SOURCE_MASK;
5755 temp |= DREF_SSC_SOURCE_ENABLE;
5757 /* SSC must be turned on before enabling the CPU output */
5758 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
5759 DRM_DEBUG_KMS("Using SSC on panel\n");
5760 temp |= DREF_SSC1_ENABLE;
5763 /* Get SSC going before enabling the outputs */
5764 I915_WRITE(PCH_DREF_CONTROL, temp);
5765 POSTING_READ(PCH_DREF_CONTROL);
5768 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
5770 /* Enable CPU source on CPU attached eDP */
5772 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
5773 DRM_DEBUG_KMS("Using SSC on eDP\n");
5774 temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
5777 temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
5779 temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
5781 I915_WRITE(PCH_DREF_CONTROL, temp);
5782 POSTING_READ(PCH_DREF_CONTROL);
5785 DRM_DEBUG_KMS("Disabling SSC entirely\n");
5787 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
5789 /* Turn off CPU output */
5790 temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
5792 I915_WRITE(PCH_DREF_CONTROL, temp);
5793 POSTING_READ(PCH_DREF_CONTROL);
5796 /* Turn off the SSC source */
5797 temp &= ~DREF_SSC_SOURCE_MASK;
5798 temp |= DREF_SSC_SOURCE_DISABLE;
5801 temp &= ~ DREF_SSC1_ENABLE;
5803 I915_WRITE(PCH_DREF_CONTROL, temp);
5804 POSTING_READ(PCH_DREF_CONTROL);
5809 static int ironlake_get_refclk(struct drm_crtc *crtc)
5811 struct drm_device *dev = crtc->dev;
5812 struct drm_i915_private *dev_priv = dev->dev_private;
5813 struct intel_encoder *encoder;
5814 struct drm_mode_config *mode_config = &dev->mode_config;
5815 struct intel_encoder *edp_encoder = NULL;
5816 int num_connectors = 0;
5817 bool is_lvds = false;
5819 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
5820 if (encoder->base.crtc != crtc)
5823 switch (encoder->type) {
5824 case INTEL_OUTPUT_LVDS:
5827 case INTEL_OUTPUT_EDP:
5828 edp_encoder = encoder;
5834 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
5835 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
5836 dev_priv->lvds_ssc_freq);
5837 return dev_priv->lvds_ssc_freq * 1000;
5843 static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
5844 struct drm_display_mode *mode,
5845 struct drm_display_mode *adjusted_mode,
5847 struct drm_framebuffer *old_fb)
5849 struct drm_device *dev = crtc->dev;
5850 struct drm_i915_private *dev_priv = dev->dev_private;
5851 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5852 int pipe = intel_crtc->pipe;
5853 int plane = intel_crtc->plane;
5854 int refclk, num_connectors = 0;
5855 intel_clock_t clock, reduced_clock;
5856 u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
5857 bool ok, has_reduced_clock = false, is_sdvo = false;
5858 bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
5859 struct intel_encoder *has_edp_encoder = NULL;
5860 struct drm_mode_config *mode_config = &dev->mode_config;
5861 struct intel_encoder *encoder;
5862 const intel_limit_t *limit;
5864 struct fdi_m_n m_n = {0};
5867 int target_clock, pixel_multiplier, lane, link_bw, factor;
5868 unsigned int pipe_bpp;
5871 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
5872 if (encoder->base.crtc != crtc)
5875 switch (encoder->type) {
5876 case INTEL_OUTPUT_LVDS:
5879 case INTEL_OUTPUT_SDVO:
5880 case INTEL_OUTPUT_HDMI:
5882 if (encoder->needs_tv_clock)
5885 case INTEL_OUTPUT_TVOUT:
5888 case INTEL_OUTPUT_ANALOG:
5891 case INTEL_OUTPUT_DISPLAYPORT:
5894 case INTEL_OUTPUT_EDP:
5895 has_edp_encoder = encoder;
5902 refclk = ironlake_get_refclk(crtc);
5905 * Returns a set of divisors for the desired target clock with the given
5906 * refclk, or FALSE. The returned values represent the clock equation:
5907 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
5909 limit = intel_limit(crtc, refclk);
5910 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
5913 DRM_ERROR("Couldn't find PLL settings for mode!\n");
5917 /* Ensure that the cursor is valid for the new mode before changing... */
5918 intel_crtc_update_cursor(crtc, true);
5920 if (is_lvds && dev_priv->lvds_downclock_avail) {
5922 * Ensure we match the reduced clock's P to the target clock.
5923 * If the clocks don't match, we can't switch the display clock
5924 * by using the FP0/FP1. In such case we will disable the LVDS
5925 * downclock feature.
5927 has_reduced_clock = limit->find_pll(limit, crtc,
5928 dev_priv->lvds_downclock,
5933 /* SDVO TV has fixed PLL values depend on its clock range,
5934 this mirrors vbios setting. */
5935 if (is_sdvo && is_tv) {
5936 if (adjusted_mode->clock >= 100000
5937 && adjusted_mode->clock < 140500) {
5943 } else if (adjusted_mode->clock >= 140500
5944 && adjusted_mode->clock <= 200000) {
5954 pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
5956 /* CPU eDP doesn't require FDI link, so just set DP M/N
5957 according to current link config */
5958 if (has_edp_encoder &&
5959 !intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
5960 target_clock = mode->clock;
5961 intel_edp_link_config(has_edp_encoder,
5964 /* [e]DP over FDI requires target mode clock
5965 instead of link clock */
5966 if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base))
5967 target_clock = mode->clock;
5969 target_clock = adjusted_mode->clock;
5971 /* FDI is a binary signal running at ~2.7GHz, encoding
5972 * each output octet as 10 bits. The actual frequency
5973 * is stored as a divider into a 100MHz clock, and the
5974 * mode pixel clock is stored in units of 1KHz.
5975 * Hence the bw of each lane in terms of the mode signal
5978 link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
5981 /* determine panel color depth */
5982 temp = I915_READ(PIPECONF(pipe));
5983 temp &= ~PIPE_BPC_MASK;
5984 dither = intel_choose_pipe_bpp_dither(crtc, &pipe_bpp, mode);
5999 WARN(1, "intel_choose_pipe_bpp returned invalid value %d\n",
6006 intel_crtc->bpp = pipe_bpp;
6007 I915_WRITE(PIPECONF(pipe), temp);
6011 * Account for spread spectrum to avoid
6012 * oversubscribing the link. Max center spread
6013 * is 2.5%; use 5% for safety's sake.
6015 u32 bps = target_clock * intel_crtc->bpp * 21 / 20;
6016 lane = bps / (link_bw * 8) + 1;
6019 intel_crtc->fdi_lanes = lane;
6021 if (pixel_multiplier > 1)
6022 link_bw *= pixel_multiplier;
6023 ironlake_compute_m_n(intel_crtc->bpp, lane, target_clock, link_bw,
6026 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
6027 if (has_reduced_clock)
6028 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
6031 /* Enable autotuning of the PLL clock (if permissible) */
6034 if ((intel_panel_use_ssc(dev_priv) &&
6035 dev_priv->lvds_ssc_freq == 100) ||
6036 (I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP)
6038 } else if (is_sdvo && is_tv)
6041 if (clock.m < factor * clock.n)
6047 dpll |= DPLLB_MODE_LVDS;
6049 dpll |= DPLLB_MODE_DAC_SERIAL;
6051 int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
6052 if (pixel_multiplier > 1) {
6053 dpll |= (pixel_multiplier - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
6055 dpll |= DPLL_DVO_HIGH_SPEED;
6057 if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base))
6058 dpll |= DPLL_DVO_HIGH_SPEED;
6060 /* compute bitmask from p1 value */
6061 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
6063 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
6067 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
6070 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
6073 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
6076 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
6080 if (is_sdvo && is_tv)
6081 dpll |= PLL_REF_INPUT_TVCLKINBC;
6083 /* XXX: just matching BIOS for now */
6084 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
6086 else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
6087 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
6089 dpll |= PLL_REF_INPUT_DREFCLK;
6091 /* setup pipeconf */
6092 pipeconf = I915_READ(PIPECONF(pipe));
6094 /* Set up the display plane register */
6095 dspcntr = DISPPLANE_GAMMA_ENABLE;
6097 DRM_DEBUG_KMS("Mode for pipe %d:\n", pipe);
6098 drm_mode_debug_printmodeline(mode);
6100 /* PCH eDP needs FDI, but CPU eDP does not */
6101 if (!intel_crtc->no_pll) {
6102 if (!has_edp_encoder ||
6103 intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
6104 I915_WRITE(PCH_FP0(pipe), fp);
6105 I915_WRITE(PCH_DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
6107 POSTING_READ(PCH_DPLL(pipe));
6111 if (dpll == (I915_READ(PCH_DPLL(0)) & 0x7fffffff) &&
6112 fp == I915_READ(PCH_FP0(0))) {
6113 intel_crtc->use_pll_a = true;
6114 DRM_DEBUG_KMS("using pipe a dpll\n");
6115 } else if (dpll == (I915_READ(PCH_DPLL(1)) & 0x7fffffff) &&
6116 fp == I915_READ(PCH_FP0(1))) {
6117 intel_crtc->use_pll_a = false;
6118 DRM_DEBUG_KMS("using pipe b dpll\n");
6120 DRM_DEBUG_KMS("no matching PLL configuration for pipe 2\n");
6125 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
6126 * This is an exception to the general rule that mode_set doesn't turn
6130 temp = I915_READ(PCH_LVDS);
6131 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
6132 if (HAS_PCH_CPT(dev)) {
6133 temp &= ~PORT_TRANS_SEL_MASK;
6134 temp |= PORT_TRANS_SEL_CPT(pipe);
6137 temp |= LVDS_PIPEB_SELECT;
6139 temp &= ~LVDS_PIPEB_SELECT;
6142 /* set the corresponsding LVDS_BORDER bit */
6143 temp |= dev_priv->lvds_border_bits;
6144 /* Set the B0-B3 data pairs corresponding to whether we're going to
6145 * set the DPLLs for dual-channel mode or not.
6148 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
6150 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
6152 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
6153 * appropriately here, but we need to look more thoroughly into how
6154 * panels behave in the two modes.
6156 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
6157 lvds_sync |= LVDS_HSYNC_POLARITY;
6158 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
6159 lvds_sync |= LVDS_VSYNC_POLARITY;
6160 if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
6162 char flags[2] = "-+";
6163 DRM_INFO("Changing LVDS panel from "
6164 "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
6165 flags[!(temp & LVDS_HSYNC_POLARITY)],
6166 flags[!(temp & LVDS_VSYNC_POLARITY)],
6167 flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
6168 flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
6169 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
6172 I915_WRITE(PCH_LVDS, temp);
6175 pipeconf &= ~PIPECONF_DITHER_EN;
6176 pipeconf &= ~PIPECONF_DITHER_TYPE_MASK;
6177 if ((is_lvds && dev_priv->lvds_dither) || dither) {
6178 pipeconf |= PIPECONF_DITHER_EN;
6179 pipeconf |= PIPECONF_DITHER_TYPE_SP;
6181 if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
6182 intel_dp_set_m_n(crtc, mode, adjusted_mode);
6184 /* For non-DP output, clear any trans DP clock recovery setting.*/
6185 I915_WRITE(TRANSDATA_M1(pipe), 0);
6186 I915_WRITE(TRANSDATA_N1(pipe), 0);
6187 I915_WRITE(TRANSDPLINK_M1(pipe), 0);
6188 I915_WRITE(TRANSDPLINK_N1(pipe), 0);
6191 if (!intel_crtc->no_pll &&
6192 (!has_edp_encoder ||
6193 intel_encoder_is_pch_edp(&has_edp_encoder->base))) {
6194 I915_WRITE(PCH_DPLL(pipe), dpll);
6196 /* Wait for the clocks to stabilize. */
6197 POSTING_READ(PCH_DPLL(pipe));
6200 /* The pixel multiplier can only be updated once the
6201 * DPLL is enabled and the clocks are stable.
6203 * So write it again.
6205 I915_WRITE(PCH_DPLL(pipe), dpll);
6208 intel_crtc->lowfreq_avail = false;
6209 if (!intel_crtc->no_pll) {
6210 if (is_lvds && has_reduced_clock && i915_powersave) {
6211 I915_WRITE(PCH_FP1(pipe), fp2);
6212 intel_crtc->lowfreq_avail = true;
6213 if (HAS_PIPE_CXSR(dev)) {
6214 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
6215 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
6218 I915_WRITE(PCH_FP1(pipe), fp);
6219 if (HAS_PIPE_CXSR(dev)) {
6220 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
6221 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
6226 pipeconf &= ~PIPECONF_INTERLACE_MASK;
6227 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
6228 pipeconf |= PIPECONF_INTERLACED_ILK;
6229 /* the chip adds 2 halflines automatically */
6230 adjusted_mode->crtc_vtotal -= 1;
6231 adjusted_mode->crtc_vblank_end -= 1;
6232 I915_WRITE(VSYNCSHIFT(pipe),
6233 adjusted_mode->crtc_hsync_start
6234 - adjusted_mode->crtc_htotal/2);
6236 pipeconf |= PIPECONF_PROGRESSIVE;
6237 I915_WRITE(VSYNCSHIFT(pipe), 0);
6240 I915_WRITE(HTOTAL(pipe),
6241 (adjusted_mode->crtc_hdisplay - 1) |
6242 ((adjusted_mode->crtc_htotal - 1) << 16));
6243 I915_WRITE(HBLANK(pipe),
6244 (adjusted_mode->crtc_hblank_start - 1) |
6245 ((adjusted_mode->crtc_hblank_end - 1) << 16));
6246 I915_WRITE(HSYNC(pipe),
6247 (adjusted_mode->crtc_hsync_start - 1) |
6248 ((adjusted_mode->crtc_hsync_end - 1) << 16));
6250 I915_WRITE(VTOTAL(pipe),
6251 (adjusted_mode->crtc_vdisplay - 1) |
6252 ((adjusted_mode->crtc_vtotal - 1) << 16));
6253 I915_WRITE(VBLANK(pipe),
6254 (adjusted_mode->crtc_vblank_start - 1) |
6255 ((adjusted_mode->crtc_vblank_end - 1) << 16));
6256 I915_WRITE(VSYNC(pipe),
6257 (adjusted_mode->crtc_vsync_start - 1) |
6258 ((adjusted_mode->crtc_vsync_end - 1) << 16));
6260 /* pipesrc controls the size that is scaled from, which should
6261 * always be the user's requested size.
6263 I915_WRITE(PIPESRC(pipe),
6264 ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
6266 I915_WRITE(PIPE_DATA_M1(pipe), TU_SIZE(m_n.tu) | m_n.gmch_m);
6267 I915_WRITE(PIPE_DATA_N1(pipe), m_n.gmch_n);
6268 I915_WRITE(PIPE_LINK_M1(pipe), m_n.link_m);
6269 I915_WRITE(PIPE_LINK_N1(pipe), m_n.link_n);
6271 if (has_edp_encoder &&
6272 !intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
6273 ironlake_set_pll_edp(crtc, adjusted_mode->clock);
6276 I915_WRITE(PIPECONF(pipe), pipeconf);
6277 POSTING_READ(PIPECONF(pipe));
6279 intel_wait_for_vblank(dev, pipe);
6281 I915_WRITE(DSPCNTR(plane), dspcntr);
6282 POSTING_READ(DSPCNTR(plane));
6284 ret = intel_pipe_set_base(crtc, x, y, old_fb);
6286 intel_update_watermarks(dev);
6291 static int intel_crtc_mode_set(struct drm_crtc *crtc,
6292 struct drm_display_mode *mode,
6293 struct drm_display_mode *adjusted_mode,
6295 struct drm_framebuffer *old_fb)
6297 struct drm_device *dev = crtc->dev;
6298 struct drm_i915_private *dev_priv = dev->dev_private;
6299 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6300 int pipe = intel_crtc->pipe;
6303 drm_vblank_pre_modeset(dev, pipe);
6305 ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode,
6307 drm_vblank_post_modeset(dev, pipe);
6310 intel_crtc->dpms_mode = DRM_MODE_DPMS_OFF;
6312 intel_crtc->dpms_mode = DRM_MODE_DPMS_ON;
6317 static bool intel_eld_uptodate(struct drm_connector *connector,
6318 int reg_eldv, uint32_t bits_eldv,
6319 int reg_elda, uint32_t bits_elda,
6322 struct drm_i915_private *dev_priv = connector->dev->dev_private;
6323 uint8_t *eld = connector->eld;
6326 i = I915_READ(reg_eldv);
6335 i = I915_READ(reg_elda);
6337 I915_WRITE(reg_elda, i);
6339 for (i = 0; i < eld[2]; i++)
6340 if (I915_READ(reg_edid) != *((uint32_t *)eld + i))
6346 static void g4x_write_eld(struct drm_connector *connector,
6347 struct drm_crtc *crtc)
6349 struct drm_i915_private *dev_priv = connector->dev->dev_private;
6350 uint8_t *eld = connector->eld;
6355 i = I915_READ(G4X_AUD_VID_DID);
6357 if (i == INTEL_AUDIO_DEVBLC || i == INTEL_AUDIO_DEVCL)
6358 eldv = G4X_ELDV_DEVCL_DEVBLC;
6360 eldv = G4X_ELDV_DEVCTG;
6362 if (intel_eld_uptodate(connector,
6363 G4X_AUD_CNTL_ST, eldv,
6364 G4X_AUD_CNTL_ST, G4X_ELD_ADDR,
6365 G4X_HDMIW_HDMIEDID))
6368 i = I915_READ(G4X_AUD_CNTL_ST);
6369 i &= ~(eldv | G4X_ELD_ADDR);
6370 len = (i >> 9) & 0x1f; /* ELD buffer size */
6371 I915_WRITE(G4X_AUD_CNTL_ST, i);
6376 len = min_t(uint8_t, eld[2], len);
6377 DRM_DEBUG_DRIVER("ELD size %d\n", len);
6378 for (i = 0; i < len; i++)
6379 I915_WRITE(G4X_HDMIW_HDMIEDID, *((uint32_t *)eld + i));
6381 i = I915_READ(G4X_AUD_CNTL_ST);
6383 I915_WRITE(G4X_AUD_CNTL_ST, i);
6386 static void ironlake_write_eld(struct drm_connector *connector,
6387 struct drm_crtc *crtc)
6389 struct drm_i915_private *dev_priv = connector->dev->dev_private;
6390 uint8_t *eld = connector->eld;
6399 if (HAS_PCH_IBX(connector->dev)) {
6400 hdmiw_hdmiedid = IBX_HDMIW_HDMIEDID_A;
6401 aud_config = IBX_AUD_CONFIG_A;
6402 aud_cntl_st = IBX_AUD_CNTL_ST_A;
6403 aud_cntrl_st2 = IBX_AUD_CNTL_ST2;
6405 hdmiw_hdmiedid = CPT_HDMIW_HDMIEDID_A;
6406 aud_config = CPT_AUD_CONFIG_A;
6407 aud_cntl_st = CPT_AUD_CNTL_ST_A;
6408 aud_cntrl_st2 = CPT_AUD_CNTRL_ST2;
6411 i = to_intel_crtc(crtc)->pipe;
6412 hdmiw_hdmiedid += i * 0x100;
6413 aud_cntl_st += i * 0x100;
6414 aud_config += i * 0x100;
6416 DRM_DEBUG_DRIVER("ELD on pipe %c\n", pipe_name(i));
6418 i = I915_READ(aud_cntl_st);
6419 i = (i >> 29) & 0x3; /* DIP_Port_Select, 0x1 = PortB */
6421 DRM_DEBUG_DRIVER("Audio directed to unknown port\n");
6422 /* operate blindly on all ports */
6423 eldv = IBX_ELD_VALIDB;
6424 eldv |= IBX_ELD_VALIDB << 4;
6425 eldv |= IBX_ELD_VALIDB << 8;
6427 DRM_DEBUG_DRIVER("ELD on port %c\n", 'A' + i);
6428 eldv = IBX_ELD_VALIDB << ((i - 1) * 4);
6431 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
6432 DRM_DEBUG_DRIVER("ELD: DisplayPort detected\n");
6433 eld[5] |= (1 << 2); /* Conn_Type, 0x1 = DisplayPort */
6434 I915_WRITE(aud_config, AUD_CONFIG_N_VALUE_INDEX); /* 0x1 = DP */
6436 I915_WRITE(aud_config, 0);
6438 if (intel_eld_uptodate(connector,
6439 aud_cntrl_st2, eldv,
6440 aud_cntl_st, IBX_ELD_ADDRESS,
6444 i = I915_READ(aud_cntrl_st2);
6446 I915_WRITE(aud_cntrl_st2, i);
6451 i = I915_READ(aud_cntl_st);
6452 i &= ~IBX_ELD_ADDRESS;
6453 I915_WRITE(aud_cntl_st, i);
6455 len = min_t(uint8_t, eld[2], 21); /* 84 bytes of hw ELD buffer */
6456 DRM_DEBUG_DRIVER("ELD size %d\n", len);
6457 for (i = 0; i < len; i++)
6458 I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i));
6460 i = I915_READ(aud_cntrl_st2);
6462 I915_WRITE(aud_cntrl_st2, i);
6465 void intel_write_eld(struct drm_encoder *encoder,
6466 struct drm_display_mode *mode)
6468 struct drm_crtc *crtc = encoder->crtc;
6469 struct drm_connector *connector;
6470 struct drm_device *dev = encoder->dev;
6471 struct drm_i915_private *dev_priv = dev->dev_private;
6473 connector = drm_select_eld(encoder, mode);
6477 DRM_DEBUG_DRIVER("ELD on [CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
6479 drm_get_connector_name(connector),
6480 connector->encoder->base.id,
6481 drm_get_encoder_name(connector->encoder));
6483 connector->eld[6] = drm_av_sync_delay(connector, mode) / 2;
6485 if (dev_priv->display.write_eld)
6486 dev_priv->display.write_eld(connector, crtc);
6489 /** Loads the palette/gamma unit for the CRTC with the prepared values */
6490 void intel_crtc_load_lut(struct drm_crtc *crtc)
6492 struct drm_device *dev = crtc->dev;
6493 struct drm_i915_private *dev_priv = dev->dev_private;
6494 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6495 int palreg = PALETTE(intel_crtc->pipe);
6498 /* The clocks have to be on to load the palette. */
6502 /* use legacy palette for Ironlake */
6503 if (HAS_PCH_SPLIT(dev))
6504 palreg = LGC_PALETTE(intel_crtc->pipe);
6506 for (i = 0; i < 256; i++) {
6507 I915_WRITE(palreg + 4 * i,
6508 (intel_crtc->lut_r[i] << 16) |
6509 (intel_crtc->lut_g[i] << 8) |
6510 intel_crtc->lut_b[i]);
6514 static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
6516 struct drm_device *dev = crtc->dev;
6517 struct drm_i915_private *dev_priv = dev->dev_private;
6518 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6519 bool visible = base != 0;
6522 if (intel_crtc->cursor_visible == visible)
6525 cntl = I915_READ(_CURACNTR);
6527 /* On these chipsets we can only modify the base whilst
6528 * the cursor is disabled.
6530 I915_WRITE(_CURABASE, base);
6532 cntl &= ~(CURSOR_FORMAT_MASK);
6533 /* XXX width must be 64, stride 256 => 0x00 << 28 */
6534 cntl |= CURSOR_ENABLE |
6535 CURSOR_GAMMA_ENABLE |
6538 cntl &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
6539 I915_WRITE(_CURACNTR, cntl);
6541 intel_crtc->cursor_visible = visible;
6544 static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
6546 struct drm_device *dev = crtc->dev;
6547 struct drm_i915_private *dev_priv = dev->dev_private;
6548 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6549 int pipe = intel_crtc->pipe;
6550 bool visible = base != 0;
6552 if (intel_crtc->cursor_visible != visible) {
6553 uint32_t cntl = I915_READ(CURCNTR(pipe));
6555 cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
6556 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
6557 cntl |= pipe << 28; /* Connect to correct pipe */
6559 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
6560 cntl |= CURSOR_MODE_DISABLE;
6562 I915_WRITE(CURCNTR(pipe), cntl);
6564 intel_crtc->cursor_visible = visible;
6566 /* and commit changes on next vblank */
6567 I915_WRITE(CURBASE(pipe), base);
6570 static void ivb_update_cursor(struct drm_crtc *crtc, u32 base)
6572 struct drm_device *dev = crtc->dev;
6573 struct drm_i915_private *dev_priv = dev->dev_private;
6574 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6575 int pipe = intel_crtc->pipe;
6576 bool visible = base != 0;
6578 if (intel_crtc->cursor_visible != visible) {
6579 uint32_t cntl = I915_READ(CURCNTR_IVB(pipe));
6581 cntl &= ~CURSOR_MODE;
6582 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
6584 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
6585 cntl |= CURSOR_MODE_DISABLE;
6587 I915_WRITE(CURCNTR_IVB(pipe), cntl);
6589 intel_crtc->cursor_visible = visible;
6591 /* and commit changes on next vblank */
6592 I915_WRITE(CURBASE_IVB(pipe), base);
6595 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
6596 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
6599 struct drm_device *dev = crtc->dev;
6600 struct drm_i915_private *dev_priv = dev->dev_private;
6601 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6602 int pipe = intel_crtc->pipe;
6603 int x = intel_crtc->cursor_x;
6604 int y = intel_crtc->cursor_y;
6610 if (on && crtc->enabled && crtc->fb) {
6611 base = intel_crtc->cursor_addr;
6612 if (x > (int) crtc->fb->width)
6615 if (y > (int) crtc->fb->height)
6621 if (x + intel_crtc->cursor_width < 0)
6624 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
6627 pos |= x << CURSOR_X_SHIFT;
6630 if (y + intel_crtc->cursor_height < 0)
6633 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
6636 pos |= y << CURSOR_Y_SHIFT;
6638 visible = base != 0;
6639 if (!visible && !intel_crtc->cursor_visible)
6642 if (IS_IVYBRIDGE(dev)) {
6643 I915_WRITE(CURPOS_IVB(pipe), pos);
6644 ivb_update_cursor(crtc, base);
6646 I915_WRITE(CURPOS(pipe), pos);
6647 if (IS_845G(dev) || IS_I865G(dev))
6648 i845_update_cursor(crtc, base);
6650 i9xx_update_cursor(crtc, base);
6654 intel_mark_busy(dev, to_intel_framebuffer(crtc->fb)->obj);
6657 static int intel_crtc_cursor_set(struct drm_crtc *crtc,
6658 struct drm_file *file,
6660 uint32_t width, uint32_t height)
6662 struct drm_device *dev = crtc->dev;
6663 struct drm_i915_private *dev_priv = dev->dev_private;
6664 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6665 struct drm_i915_gem_object *obj;
6669 DRM_DEBUG_KMS("\n");
6671 /* if we want to turn off the cursor ignore width and height */
6673 DRM_DEBUG_KMS("cursor off\n");
6676 mutex_lock(&dev->struct_mutex);
6680 /* Currently we only support 64x64 cursors */
6681 if (width != 64 || height != 64) {
6682 DRM_ERROR("we currently only support 64x64 cursors\n");
6686 obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
6687 if (&obj->base == NULL)
6690 if (obj->base.size < width * height * 4) {
6691 DRM_ERROR("buffer is to small\n");
6696 /* we only need to pin inside GTT if cursor is non-phy */
6697 mutex_lock(&dev->struct_mutex);
6698 if (!dev_priv->info->cursor_needs_physical) {
6699 if (obj->tiling_mode) {
6700 DRM_ERROR("cursor cannot be tiled\n");
6705 ret = i915_gem_object_pin_to_display_plane(obj, 0, NULL);
6707 DRM_ERROR("failed to move cursor bo into the GTT\n");
6711 ret = i915_gem_object_put_fence(obj);
6713 DRM_ERROR("failed to release fence for cursor");
6717 addr = obj->gtt_offset;
6719 int align = IS_I830(dev) ? 16 * 1024 : 256;
6720 ret = i915_gem_attach_phys_object(dev, obj,
6721 (intel_crtc->pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1,
6724 DRM_ERROR("failed to attach phys object\n");
6727 addr = obj->phys_obj->handle->busaddr;
6731 I915_WRITE(CURSIZE, (height << 12) | width);
6734 if (intel_crtc->cursor_bo) {
6735 if (dev_priv->info->cursor_needs_physical) {
6736 if (intel_crtc->cursor_bo != obj)
6737 i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
6739 i915_gem_object_unpin(intel_crtc->cursor_bo);
6740 drm_gem_object_unreference(&intel_crtc->cursor_bo->base);
6743 mutex_unlock(&dev->struct_mutex);
6745 intel_crtc->cursor_addr = addr;
6746 intel_crtc->cursor_bo = obj;
6747 intel_crtc->cursor_width = width;
6748 intel_crtc->cursor_height = height;
6750 intel_crtc_update_cursor(crtc, true);
6754 i915_gem_object_unpin(obj);
6756 mutex_unlock(&dev->struct_mutex);
6758 drm_gem_object_unreference_unlocked(&obj->base);
6762 static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
6764 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6766 intel_crtc->cursor_x = x;
6767 intel_crtc->cursor_y = y;
6769 intel_crtc_update_cursor(crtc, true);
6774 /** Sets the color ramps on behalf of RandR */
6775 void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
6776 u16 blue, int regno)
6778 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6780 intel_crtc->lut_r[regno] = red >> 8;
6781 intel_crtc->lut_g[regno] = green >> 8;
6782 intel_crtc->lut_b[regno] = blue >> 8;
6785 void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
6786 u16 *blue, int regno)
6788 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6790 *red = intel_crtc->lut_r[regno] << 8;
6791 *green = intel_crtc->lut_g[regno] << 8;
6792 *blue = intel_crtc->lut_b[regno] << 8;
6795 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
6796 u16 *blue, uint32_t start, uint32_t size)
6798 int end = (start + size > 256) ? 256 : start + size, i;
6799 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6801 for (i = start; i < end; i++) {
6802 intel_crtc->lut_r[i] = red[i] >> 8;
6803 intel_crtc->lut_g[i] = green[i] >> 8;
6804 intel_crtc->lut_b[i] = blue[i] >> 8;
6807 intel_crtc_load_lut(crtc);
6811 * Get a pipe with a simple mode set on it for doing load-based monitor
6814 * It will be up to the load-detect code to adjust the pipe as appropriate for
6815 * its requirements. The pipe will be connected to no other encoders.
6817 * Currently this code will only succeed if there is a pipe with no encoders
6818 * configured for it. In the future, it could choose to temporarily disable
6819 * some outputs to free up a pipe for its use.
6821 * \return crtc, or NULL if no pipes are available.
6824 /* VESA 640x480x72Hz mode to set on the pipe */
6825 static struct drm_display_mode load_detect_mode = {
6826 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
6827 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
6830 static struct drm_framebuffer *
6831 intel_framebuffer_create(struct drm_device *dev,
6832 struct drm_mode_fb_cmd2 *mode_cmd,
6833 struct drm_i915_gem_object *obj)
6835 struct intel_framebuffer *intel_fb;
6838 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
6840 drm_gem_object_unreference_unlocked(&obj->base);
6841 return ERR_PTR(-ENOMEM);
6844 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
6846 drm_gem_object_unreference_unlocked(&obj->base);
6848 return ERR_PTR(ret);
6851 return &intel_fb->base;
6855 intel_framebuffer_pitch_for_width(int width, int bpp)
6857 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
6858 return ALIGN(pitch, 64);
6862 intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
6864 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
6865 return ALIGN(pitch * mode->vdisplay, PAGE_SIZE);
6868 static struct drm_framebuffer *
6869 intel_framebuffer_create_for_mode(struct drm_device *dev,
6870 struct drm_display_mode *mode,
6873 struct drm_i915_gem_object *obj;
6874 struct drm_mode_fb_cmd2 mode_cmd;
6876 obj = i915_gem_alloc_object(dev,
6877 intel_framebuffer_size_for_mode(mode, bpp));
6879 return ERR_PTR(-ENOMEM);
6881 mode_cmd.width = mode->hdisplay;
6882 mode_cmd.height = mode->vdisplay;
6883 mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
6885 mode_cmd.pixel_format = 0;
6887 return intel_framebuffer_create(dev, &mode_cmd, obj);
6890 static struct drm_framebuffer *
6891 mode_fits_in_fbdev(struct drm_device *dev,
6892 struct drm_display_mode *mode)
6894 struct drm_i915_private *dev_priv = dev->dev_private;
6895 struct drm_i915_gem_object *obj;
6896 struct drm_framebuffer *fb;
6898 if (dev_priv->fbdev == NULL)
6901 obj = dev_priv->fbdev->ifb.obj;
6905 fb = &dev_priv->fbdev->ifb.base;
6906 if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
6907 fb->bits_per_pixel))
6910 if (obj->base.size < mode->vdisplay * fb->pitches[0])
6916 bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
6917 struct drm_connector *connector,
6918 struct drm_display_mode *mode,
6919 struct intel_load_detect_pipe *old)
6921 struct intel_crtc *intel_crtc;
6922 struct drm_crtc *possible_crtc;
6923 struct drm_encoder *encoder = &intel_encoder->base;
6924 struct drm_crtc *crtc = NULL;
6925 struct drm_device *dev = encoder->dev;
6926 struct drm_framebuffer *old_fb;
6929 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
6930 connector->base.id, drm_get_connector_name(connector),
6931 encoder->base.id, drm_get_encoder_name(encoder));
6934 * Algorithm gets a little messy:
6936 * - if the connector already has an assigned crtc, use it (but make
6937 * sure it's on first)
6939 * - try to find the first unused crtc that can drive this connector,
6940 * and use that if we find one
6943 /* See if we already have a CRTC for this connector */
6944 if (encoder->crtc) {
6945 crtc = encoder->crtc;
6947 intel_crtc = to_intel_crtc(crtc);
6948 old->dpms_mode = intel_crtc->dpms_mode;
6949 old->load_detect_temp = false;
6951 /* Make sure the crtc and connector are running */
6952 if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
6953 struct drm_encoder_helper_funcs *encoder_funcs;
6954 struct drm_crtc_helper_funcs *crtc_funcs;
6956 crtc_funcs = crtc->helper_private;
6957 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
6959 encoder_funcs = encoder->helper_private;
6960 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
6966 /* Find an unused one (if possible) */
6967 list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
6969 if (!(encoder->possible_crtcs & (1 << i)))
6971 if (!possible_crtc->enabled) {
6972 crtc = possible_crtc;
6978 * If we didn't find an unused CRTC, don't use any.
6981 DRM_DEBUG_KMS("no pipe available for load-detect\n");
6985 encoder->crtc = crtc;
6986 connector->encoder = encoder;
6988 intel_crtc = to_intel_crtc(crtc);
6989 old->dpms_mode = intel_crtc->dpms_mode;
6990 old->load_detect_temp = true;
6991 old->release_fb = NULL;
6994 mode = &load_detect_mode;
6998 /* We need a framebuffer large enough to accommodate all accesses
6999 * that the plane may generate whilst we perform load detection.
7000 * We can not rely on the fbcon either being present (we get called
7001 * during its initialisation to detect all boot displays, or it may
7002 * not even exist) or that it is large enough to satisfy the
7005 crtc->fb = mode_fits_in_fbdev(dev, mode);
7006 if (crtc->fb == NULL) {
7007 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
7008 crtc->fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
7009 old->release_fb = crtc->fb;
7011 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
7012 if (IS_ERR(crtc->fb)) {
7013 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
7018 if (!drm_crtc_helper_set_mode(crtc, mode, 0, 0, old_fb)) {
7019 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
7020 if (old->release_fb)
7021 old->release_fb->funcs->destroy(old->release_fb);
7026 /* let the connector get through one full cycle before testing */
7027 intel_wait_for_vblank(dev, intel_crtc->pipe);
7032 void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
7033 struct drm_connector *connector,
7034 struct intel_load_detect_pipe *old)
7036 struct drm_encoder *encoder = &intel_encoder->base;
7037 struct drm_device *dev = encoder->dev;
7038 struct drm_crtc *crtc = encoder->crtc;
7039 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
7040 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
7042 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
7043 connector->base.id, drm_get_connector_name(connector),
7044 encoder->base.id, drm_get_encoder_name(encoder));
7046 if (old->load_detect_temp) {
7047 connector->encoder = NULL;
7048 drm_helper_disable_unused_functions(dev);
7050 if (old->release_fb)
7051 old->release_fb->funcs->destroy(old->release_fb);
7056 /* Switch crtc and encoder back off if necessary */
7057 if (old->dpms_mode != DRM_MODE_DPMS_ON) {
7058 encoder_funcs->dpms(encoder, old->dpms_mode);
7059 crtc_funcs->dpms(crtc, old->dpms_mode);
7063 /* Returns the clock of the currently programmed mode of the given pipe. */
7064 static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
7066 struct drm_i915_private *dev_priv = dev->dev_private;
7067 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7068 int pipe = intel_crtc->pipe;
7069 u32 dpll = I915_READ(DPLL(pipe));
7071 intel_clock_t clock;
7073 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
7074 fp = I915_READ(FP0(pipe));
7076 fp = I915_READ(FP1(pipe));
7078 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
7079 if (IS_PINEVIEW(dev)) {
7080 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
7081 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
7083 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
7084 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
7087 if (!IS_GEN2(dev)) {
7088 if (IS_PINEVIEW(dev))
7089 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
7090 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
7092 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
7093 DPLL_FPA01_P1_POST_DIV_SHIFT);
7095 switch (dpll & DPLL_MODE_MASK) {
7096 case DPLLB_MODE_DAC_SERIAL:
7097 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
7100 case DPLLB_MODE_LVDS:
7101 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
7105 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
7106 "mode\n", (int)(dpll & DPLL_MODE_MASK));
7110 /* XXX: Handle the 100Mhz refclk */
7111 intel_clock(dev, 96000, &clock);
7113 bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
7116 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
7117 DPLL_FPA01_P1_POST_DIV_SHIFT);
7120 if ((dpll & PLL_REF_INPUT_MASK) ==
7121 PLLB_REF_INPUT_SPREADSPECTRUMIN) {
7122 /* XXX: might not be 66MHz */
7123 intel_clock(dev, 66000, &clock);
7125 intel_clock(dev, 48000, &clock);
7127 if (dpll & PLL_P1_DIVIDE_BY_TWO)
7130 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
7131 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
7133 if (dpll & PLL_P2_DIVIDE_BY_4)
7138 intel_clock(dev, 48000, &clock);
7142 /* XXX: It would be nice to validate the clocks, but we can't reuse
7143 * i830PllIsValid() because it relies on the xf86_config connector
7144 * configuration being accurate, which it isn't necessarily.
7150 /** Returns the currently programmed mode of the given pipe. */
7151 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
7152 struct drm_crtc *crtc)
7154 struct drm_i915_private *dev_priv = dev->dev_private;
7155 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7156 int pipe = intel_crtc->pipe;
7157 struct drm_display_mode *mode;
7158 int htot = I915_READ(HTOTAL(pipe));
7159 int hsync = I915_READ(HSYNC(pipe));
7160 int vtot = I915_READ(VTOTAL(pipe));
7161 int vsync = I915_READ(VSYNC(pipe));
7163 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
7167 mode->clock = intel_crtc_clock_get(dev, crtc);
7168 mode->hdisplay = (htot & 0xffff) + 1;
7169 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
7170 mode->hsync_start = (hsync & 0xffff) + 1;
7171 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
7172 mode->vdisplay = (vtot & 0xffff) + 1;
7173 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
7174 mode->vsync_start = (vsync & 0xffff) + 1;
7175 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
7177 drm_mode_set_name(mode);
7178 drm_mode_set_crtcinfo(mode, 0);
7183 #define GPU_IDLE_TIMEOUT 500 /* ms */
7185 /* When this timer fires, we've been idle for awhile */
7186 static void intel_gpu_idle_timer(unsigned long arg)
7188 struct drm_device *dev = (struct drm_device *)arg;
7189 drm_i915_private_t *dev_priv = dev->dev_private;
7191 if (!list_empty(&dev_priv->mm.active_list)) {
7192 /* Still processing requests, so just re-arm the timer. */
7193 mod_timer(&dev_priv->idle_timer, jiffies +
7194 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
7198 dev_priv->busy = false;
7199 queue_work(dev_priv->wq, &dev_priv->idle_work);
7202 #define CRTC_IDLE_TIMEOUT 1000 /* ms */
7204 static void intel_crtc_idle_timer(unsigned long arg)
7206 struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
7207 struct drm_crtc *crtc = &intel_crtc->base;
7208 drm_i915_private_t *dev_priv = crtc->dev->dev_private;
7209 struct intel_framebuffer *intel_fb;
7211 intel_fb = to_intel_framebuffer(crtc->fb);
7212 if (intel_fb && intel_fb->obj->active) {
7213 /* The framebuffer is still being accessed by the GPU. */
7214 mod_timer(&intel_crtc->idle_timer, jiffies +
7215 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
7219 intel_crtc->busy = false;
7220 queue_work(dev_priv->wq, &dev_priv->idle_work);
7223 static void intel_increase_pllclock(struct drm_crtc *crtc)
7225 struct drm_device *dev = crtc->dev;
7226 drm_i915_private_t *dev_priv = dev->dev_private;
7227 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7228 int pipe = intel_crtc->pipe;
7229 int dpll_reg = DPLL(pipe);
7232 if (HAS_PCH_SPLIT(dev))
7235 if (!dev_priv->lvds_downclock_avail)
7238 dpll = I915_READ(dpll_reg);
7239 if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
7240 DRM_DEBUG_DRIVER("upclocking LVDS\n");
7242 assert_panel_unlocked(dev_priv, pipe);
7244 dpll &= ~DISPLAY_RATE_SELECT_FPA1;
7245 I915_WRITE(dpll_reg, dpll);
7246 intel_wait_for_vblank(dev, pipe);
7248 dpll = I915_READ(dpll_reg);
7249 if (dpll & DISPLAY_RATE_SELECT_FPA1)
7250 DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
7253 /* Schedule downclock */
7254 mod_timer(&intel_crtc->idle_timer, jiffies +
7255 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
7258 static void intel_decrease_pllclock(struct drm_crtc *crtc)
7260 struct drm_device *dev = crtc->dev;
7261 drm_i915_private_t *dev_priv = dev->dev_private;
7262 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7263 int pipe = intel_crtc->pipe;
7264 int dpll_reg = DPLL(pipe);
7265 int dpll = I915_READ(dpll_reg);
7267 if (HAS_PCH_SPLIT(dev))
7270 if (!dev_priv->lvds_downclock_avail)
7274 * Since this is called by a timer, we should never get here in
7277 if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
7278 DRM_DEBUG_DRIVER("downclocking LVDS\n");
7280 assert_panel_unlocked(dev_priv, pipe);
7282 dpll |= DISPLAY_RATE_SELECT_FPA1;
7283 I915_WRITE(dpll_reg, dpll);
7284 intel_wait_for_vblank(dev, pipe);
7285 dpll = I915_READ(dpll_reg);
7286 if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
7287 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
7293 * intel_idle_update - adjust clocks for idleness
7294 * @work: work struct
7296 * Either the GPU or display (or both) went idle. Check the busy status
7297 * here and adjust the CRTC and GPU clocks as necessary.
7299 static void intel_idle_update(struct work_struct *work)
7301 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
7303 struct drm_device *dev = dev_priv->dev;
7304 struct drm_crtc *crtc;
7305 struct intel_crtc *intel_crtc;
7307 if (!i915_powersave)
7310 mutex_lock(&dev->struct_mutex);
7312 i915_update_gfx_val(dev_priv);
7314 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
7315 /* Skip inactive CRTCs */
7319 intel_crtc = to_intel_crtc(crtc);
7320 if (!intel_crtc->busy)
7321 intel_decrease_pllclock(crtc);
7325 mutex_unlock(&dev->struct_mutex);
7329 * intel_mark_busy - mark the GPU and possibly the display busy
7331 * @obj: object we're operating on
7333 * Callers can use this function to indicate that the GPU is busy processing
7334 * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
7335 * buffer), we'll also mark the display as busy, so we know to increase its
7338 void intel_mark_busy(struct drm_device *dev, struct drm_i915_gem_object *obj)
7340 drm_i915_private_t *dev_priv = dev->dev_private;
7341 struct drm_crtc *crtc = NULL;
7342 struct intel_framebuffer *intel_fb;
7343 struct intel_crtc *intel_crtc;
7345 if (!drm_core_check_feature(dev, DRIVER_MODESET))
7348 if (!dev_priv->busy)
7349 dev_priv->busy = true;
7351 mod_timer(&dev_priv->idle_timer, jiffies +
7352 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
7354 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
7358 intel_crtc = to_intel_crtc(crtc);
7359 intel_fb = to_intel_framebuffer(crtc->fb);
7360 if (intel_fb->obj == obj) {
7361 if (!intel_crtc->busy) {
7362 /* Non-busy -> busy, upclock */
7363 intel_increase_pllclock(crtc);
7364 intel_crtc->busy = true;
7366 /* Busy -> busy, put off timer */
7367 mod_timer(&intel_crtc->idle_timer, jiffies +
7368 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
7374 static void intel_crtc_destroy(struct drm_crtc *crtc)
7376 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7377 struct drm_device *dev = crtc->dev;
7378 struct intel_unpin_work *work;
7379 unsigned long flags;
7381 spin_lock_irqsave(&dev->event_lock, flags);
7382 work = intel_crtc->unpin_work;
7383 intel_crtc->unpin_work = NULL;
7384 spin_unlock_irqrestore(&dev->event_lock, flags);
7387 cancel_work_sync(&work->work);
7391 drm_crtc_cleanup(crtc);
7396 static void intel_unpin_work_fn(struct work_struct *__work)
7398 struct intel_unpin_work *work =
7399 container_of(__work, struct intel_unpin_work, work);
7401 mutex_lock(&work->dev->struct_mutex);
7402 intel_unpin_fb_obj(work->old_fb_obj);
7403 drm_gem_object_unreference(&work->pending_flip_obj->base);
7404 drm_gem_object_unreference(&work->old_fb_obj->base);
7406 intel_update_fbc(work->dev);
7407 mutex_unlock(&work->dev->struct_mutex);
7411 static void do_intel_finish_page_flip(struct drm_device *dev,
7412 struct drm_crtc *crtc)
7414 drm_i915_private_t *dev_priv = dev->dev_private;
7415 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7416 struct intel_unpin_work *work;
7417 struct drm_i915_gem_object *obj;
7418 struct drm_pending_vblank_event *e;
7419 struct timeval tnow, tvbl;
7420 unsigned long flags;
7422 /* Ignore early vblank irqs */
7423 if (intel_crtc == NULL)
7426 do_gettimeofday(&tnow);
7428 spin_lock_irqsave(&dev->event_lock, flags);
7429 work = intel_crtc->unpin_work;
7430 if (work == NULL || !work->pending) {
7431 spin_unlock_irqrestore(&dev->event_lock, flags);
7435 intel_crtc->unpin_work = NULL;
7439 e->event.sequence = drm_vblank_count_and_time(dev, intel_crtc->pipe, &tvbl);
7441 /* Called before vblank count and timestamps have
7442 * been updated for the vblank interval of flip
7443 * completion? Need to increment vblank count and
7444 * add one videorefresh duration to returned timestamp
7445 * to account for this. We assume this happened if we
7446 * get called over 0.9 frame durations after the last
7447 * timestamped vblank.
7449 * This calculation can not be used with vrefresh rates
7450 * below 5Hz (10Hz to be on the safe side) without
7451 * promoting to 64 integers.
7453 if (10 * (timeval_to_ns(&tnow) - timeval_to_ns(&tvbl)) >
7454 9 * crtc->framedur_ns) {
7455 e->event.sequence++;
7456 tvbl = ns_to_timeval(timeval_to_ns(&tvbl) +
7460 e->event.tv_sec = tvbl.tv_sec;
7461 e->event.tv_usec = tvbl.tv_usec;
7463 list_add_tail(&e->base.link,
7464 &e->base.file_priv->event_list);
7465 wake_up_interruptible(&e->base.file_priv->event_wait);
7468 drm_vblank_put(dev, intel_crtc->pipe);
7470 spin_unlock_irqrestore(&dev->event_lock, flags);
7472 obj = work->old_fb_obj;
7474 atomic_clear_mask(1 << intel_crtc->plane,
7475 &obj->pending_flip.counter);
7476 if (atomic_read(&obj->pending_flip) == 0)
7477 wake_up(&dev_priv->pending_flip_queue);
7479 schedule_work(&work->work);
7481 trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
7484 void intel_finish_page_flip(struct drm_device *dev, int pipe)
7486 drm_i915_private_t *dev_priv = dev->dev_private;
7487 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
7489 do_intel_finish_page_flip(dev, crtc);
7492 void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
7494 drm_i915_private_t *dev_priv = dev->dev_private;
7495 struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
7497 do_intel_finish_page_flip(dev, crtc);
7500 void intel_prepare_page_flip(struct drm_device *dev, int plane)
7502 drm_i915_private_t *dev_priv = dev->dev_private;
7503 struct intel_crtc *intel_crtc =
7504 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
7505 unsigned long flags;
7507 spin_lock_irqsave(&dev->event_lock, flags);
7508 if (intel_crtc->unpin_work) {
7509 if ((++intel_crtc->unpin_work->pending) > 1)
7510 DRM_ERROR("Prepared flip multiple times\n");
7512 DRM_DEBUG_DRIVER("preparing flip with no unpin work?\n");
7514 spin_unlock_irqrestore(&dev->event_lock, flags);
7517 static int intel_gen2_queue_flip(struct drm_device *dev,
7518 struct drm_crtc *crtc,
7519 struct drm_framebuffer *fb,
7520 struct drm_i915_gem_object *obj)
7522 struct drm_i915_private *dev_priv = dev->dev_private;
7523 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7524 unsigned long offset;
7528 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
7532 /* Offset into the new buffer for cases of shared fbs between CRTCs */
7533 offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
7535 ret = BEGIN_LP_RING(6);
7539 /* Can't queue multiple flips, so wait for the previous
7540 * one to finish before executing the next.
7542 if (intel_crtc->plane)
7543 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
7545 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
7546 OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
7548 OUT_RING(MI_DISPLAY_FLIP |
7549 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
7550 OUT_RING(fb->pitches[0]);
7551 OUT_RING(obj->gtt_offset + offset);
7552 OUT_RING(0); /* aux display base address, unused */
7558 static int intel_gen3_queue_flip(struct drm_device *dev,
7559 struct drm_crtc *crtc,
7560 struct drm_framebuffer *fb,
7561 struct drm_i915_gem_object *obj)
7563 struct drm_i915_private *dev_priv = dev->dev_private;
7564 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7565 unsigned long offset;
7569 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
7573 /* Offset into the new buffer for cases of shared fbs between CRTCs */
7574 offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
7576 ret = BEGIN_LP_RING(6);
7580 if (intel_crtc->plane)
7581 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
7583 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
7584 OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
7586 OUT_RING(MI_DISPLAY_FLIP_I915 |
7587 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
7588 OUT_RING(fb->pitches[0]);
7589 OUT_RING(obj->gtt_offset + offset);
7597 static int intel_gen4_queue_flip(struct drm_device *dev,
7598 struct drm_crtc *crtc,
7599 struct drm_framebuffer *fb,
7600 struct drm_i915_gem_object *obj)
7602 struct drm_i915_private *dev_priv = dev->dev_private;
7603 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7604 uint32_t pf, pipesrc;
7607 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
7611 ret = BEGIN_LP_RING(4);
7615 /* i965+ uses the linear or tiled offsets from the
7616 * Display Registers (which do not change across a page-flip)
7617 * so we need only reprogram the base address.
7619 OUT_RING(MI_DISPLAY_FLIP |
7620 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
7621 OUT_RING(fb->pitches[0]);
7622 OUT_RING(obj->gtt_offset | obj->tiling_mode);
7624 /* XXX Enabling the panel-fitter across page-flip is so far
7625 * untested on non-native modes, so ignore it for now.
7626 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
7629 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
7630 OUT_RING(pf | pipesrc);
7636 static int intel_gen6_queue_flip(struct drm_device *dev,
7637 struct drm_crtc *crtc,
7638 struct drm_framebuffer *fb,
7639 struct drm_i915_gem_object *obj)
7641 struct drm_i915_private *dev_priv = dev->dev_private;
7642 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7643 uint32_t pf, pipesrc;
7646 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
7650 ret = BEGIN_LP_RING(4);
7654 OUT_RING(MI_DISPLAY_FLIP |
7655 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
7656 OUT_RING(fb->pitches[0] | obj->tiling_mode);
7657 OUT_RING(obj->gtt_offset);
7659 pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
7660 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
7661 OUT_RING(pf | pipesrc);
7668 * On gen7 we currently use the blit ring because (in early silicon at least)
7669 * the render ring doesn't give us interrpts for page flip completion, which
7670 * means clients will hang after the first flip is queued. Fortunately the
7671 * blit ring generates interrupts properly, so use it instead.
7673 static int intel_gen7_queue_flip(struct drm_device *dev,
7674 struct drm_crtc *crtc,
7675 struct drm_framebuffer *fb,
7676 struct drm_i915_gem_object *obj)
7678 struct drm_i915_private *dev_priv = dev->dev_private;
7679 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7680 struct intel_ring_buffer *ring = &dev_priv->ring[BCS];
7683 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
7687 ret = intel_ring_begin(ring, 4);
7691 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | (intel_crtc->plane << 19));
7692 intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
7693 intel_ring_emit(ring, (obj->gtt_offset));
7694 intel_ring_emit(ring, (MI_NOOP));
7695 intel_ring_advance(ring);
7700 static int intel_default_queue_flip(struct drm_device *dev,
7701 struct drm_crtc *crtc,
7702 struct drm_framebuffer *fb,
7703 struct drm_i915_gem_object *obj)
7708 static int intel_crtc_page_flip(struct drm_crtc *crtc,
7709 struct drm_framebuffer *fb,
7710 struct drm_pending_vblank_event *event)
7712 struct drm_device *dev = crtc->dev;
7713 struct drm_i915_private *dev_priv = dev->dev_private;
7714 struct intel_framebuffer *intel_fb;
7715 struct drm_i915_gem_object *obj;
7716 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7717 struct intel_unpin_work *work;
7718 unsigned long flags;
7721 work = kzalloc(sizeof *work, GFP_KERNEL);
7725 work->event = event;
7726 work->dev = crtc->dev;
7727 intel_fb = to_intel_framebuffer(crtc->fb);
7728 work->old_fb_obj = intel_fb->obj;
7729 INIT_WORK(&work->work, intel_unpin_work_fn);
7731 ret = drm_vblank_get(dev, intel_crtc->pipe);
7735 /* We borrow the event spin lock for protecting unpin_work */
7736 spin_lock_irqsave(&dev->event_lock, flags);
7737 if (intel_crtc->unpin_work) {
7738 spin_unlock_irqrestore(&dev->event_lock, flags);
7740 drm_vblank_put(dev, intel_crtc->pipe);
7742 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
7745 intel_crtc->unpin_work = work;
7746 spin_unlock_irqrestore(&dev->event_lock, flags);
7748 intel_fb = to_intel_framebuffer(fb);
7749 obj = intel_fb->obj;
7751 mutex_lock(&dev->struct_mutex);
7753 /* Reference the objects for the scheduled work. */
7754 drm_gem_object_reference(&work->old_fb_obj->base);
7755 drm_gem_object_reference(&obj->base);
7759 work->pending_flip_obj = obj;
7761 work->enable_stall_check = true;
7763 /* Block clients from rendering to the new back buffer until
7764 * the flip occurs and the object is no longer visible.
7766 atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
7768 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj);
7770 goto cleanup_pending;
7772 intel_disable_fbc(dev);
7773 mutex_unlock(&dev->struct_mutex);
7775 trace_i915_flip_request(intel_crtc->plane, obj);
7780 atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
7781 drm_gem_object_unreference(&work->old_fb_obj->base);
7782 drm_gem_object_unreference(&obj->base);
7783 mutex_unlock(&dev->struct_mutex);
7785 spin_lock_irqsave(&dev->event_lock, flags);
7786 intel_crtc->unpin_work = NULL;
7787 spin_unlock_irqrestore(&dev->event_lock, flags);
7789 drm_vblank_put(dev, intel_crtc->pipe);
7796 static void intel_sanitize_modesetting(struct drm_device *dev,
7797 int pipe, int plane)
7799 struct drm_i915_private *dev_priv = dev->dev_private;
7802 if (HAS_PCH_SPLIT(dev))
7805 /* Who knows what state these registers were left in by the BIOS or
7808 * If we leave the registers in a conflicting state (e.g. with the
7809 * display plane reading from the other pipe than the one we intend
7810 * to use) then when we attempt to teardown the active mode, we will
7811 * not disable the pipes and planes in the correct order -- leaving
7812 * a plane reading from a disabled pipe and possibly leading to
7813 * undefined behaviour.
7816 reg = DSPCNTR(plane);
7817 val = I915_READ(reg);
7819 if ((val & DISPLAY_PLANE_ENABLE) == 0)
7821 if (!!(val & DISPPLANE_SEL_PIPE_MASK) == pipe)
7824 /* This display plane is active and attached to the other CPU pipe. */
7827 /* Disable the plane and wait for it to stop reading from the pipe. */
7828 intel_disable_plane(dev_priv, plane, pipe);
7829 intel_disable_pipe(dev_priv, pipe);
7832 static void intel_crtc_reset(struct drm_crtc *crtc)
7834 struct drm_device *dev = crtc->dev;
7835 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7837 /* Reset flags back to the 'unknown' status so that they
7838 * will be correctly set on the initial modeset.
7840 intel_crtc->dpms_mode = -1;
7842 /* We need to fix up any BIOS configuration that conflicts with
7845 intel_sanitize_modesetting(dev, intel_crtc->pipe, intel_crtc->plane);
7848 static struct drm_crtc_helper_funcs intel_helper_funcs = {
7849 .dpms = intel_crtc_dpms,
7850 .mode_fixup = intel_crtc_mode_fixup,
7851 .mode_set = intel_crtc_mode_set,
7852 .mode_set_base = intel_pipe_set_base,
7853 .mode_set_base_atomic = intel_pipe_set_base_atomic,
7854 .load_lut = intel_crtc_load_lut,
7855 .disable = intel_crtc_disable,
7858 static const struct drm_crtc_funcs intel_crtc_funcs = {
7859 .reset = intel_crtc_reset,
7860 .cursor_set = intel_crtc_cursor_set,
7861 .cursor_move = intel_crtc_cursor_move,
7862 .gamma_set = intel_crtc_gamma_set,
7863 .set_config = drm_crtc_helper_set_config,
7864 .destroy = intel_crtc_destroy,
7865 .page_flip = intel_crtc_page_flip,
7868 static void intel_crtc_init(struct drm_device *dev, int pipe)
7870 drm_i915_private_t *dev_priv = dev->dev_private;
7871 struct intel_crtc *intel_crtc;
7874 intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
7875 if (intel_crtc == NULL)
7878 drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
7880 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
7881 for (i = 0; i < 256; i++) {
7882 intel_crtc->lut_r[i] = i;
7883 intel_crtc->lut_g[i] = i;
7884 intel_crtc->lut_b[i] = i;
7887 /* Swap pipes & planes for FBC on pre-965 */
7888 intel_crtc->pipe = pipe;
7889 intel_crtc->plane = pipe;
7890 if (IS_MOBILE(dev) && IS_GEN3(dev)) {
7891 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
7892 intel_crtc->plane = !pipe;
7895 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
7896 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
7897 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
7898 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
7900 intel_crtc_reset(&intel_crtc->base);
7901 intel_crtc->active = true; /* force the pipe off on setup_init_config */
7902 intel_crtc->bpp = 24; /* default for pre-Ironlake */
7904 if (HAS_PCH_SPLIT(dev)) {
7905 if (pipe == 2 && IS_IVYBRIDGE(dev))
7906 intel_crtc->no_pll = true;
7907 intel_helper_funcs.prepare = ironlake_crtc_prepare;
7908 intel_helper_funcs.commit = ironlake_crtc_commit;
7910 intel_helper_funcs.prepare = i9xx_crtc_prepare;
7911 intel_helper_funcs.commit = i9xx_crtc_commit;
7914 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
7916 intel_crtc->busy = false;
7918 setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
7919 (unsigned long)intel_crtc);
7922 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
7923 struct drm_file *file)
7925 drm_i915_private_t *dev_priv = dev->dev_private;
7926 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
7927 struct drm_mode_object *drmmode_obj;
7928 struct intel_crtc *crtc;
7931 DRM_ERROR("called with no initialization\n");
7935 drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
7936 DRM_MODE_OBJECT_CRTC);
7939 DRM_ERROR("no such CRTC id\n");
7943 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
7944 pipe_from_crtc_id->pipe = crtc->pipe;
7949 static int intel_encoder_clones(struct drm_device *dev, int type_mask)
7951 struct intel_encoder *encoder;
7955 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
7956 if (type_mask & encoder->clone_mask)
7957 index_mask |= (1 << entry);
7964 static bool has_edp_a(struct drm_device *dev)
7966 struct drm_i915_private *dev_priv = dev->dev_private;
7968 if (!IS_MOBILE(dev))
7971 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
7975 (I915_READ(ILK_DISPLAY_CHICKEN_FUSES) & ILK_eDP_A_DISABLE))
7981 static void intel_setup_outputs(struct drm_device *dev)
7983 struct drm_i915_private *dev_priv = dev->dev_private;
7984 struct intel_encoder *encoder;
7985 bool dpd_is_edp = false;
7988 has_lvds = intel_lvds_init(dev);
7989 if (!has_lvds && !HAS_PCH_SPLIT(dev)) {
7990 /* disable the panel fitter on everything but LVDS */
7991 I915_WRITE(PFIT_CONTROL, 0);
7994 if (HAS_PCH_SPLIT(dev)) {
7995 dpd_is_edp = intel_dpd_is_edp(dev);
7998 intel_dp_init(dev, DP_A);
8000 if (dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
8001 intel_dp_init(dev, PCH_DP_D);
8004 intel_crt_init(dev);
8006 if (HAS_PCH_SPLIT(dev)) {
8009 if (I915_READ(HDMIB) & PORT_DETECTED) {
8010 /* PCH SDVOB multiplex with HDMIB */
8011 found = intel_sdvo_init(dev, PCH_SDVOB, true);
8013 intel_hdmi_init(dev, HDMIB);
8014 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
8015 intel_dp_init(dev, PCH_DP_B);
8018 if (I915_READ(HDMIC) & PORT_DETECTED)
8019 intel_hdmi_init(dev, HDMIC);
8021 if (I915_READ(HDMID) & PORT_DETECTED)
8022 intel_hdmi_init(dev, HDMID);
8024 if (I915_READ(PCH_DP_C) & DP_DETECTED)
8025 intel_dp_init(dev, PCH_DP_C);
8027 if (!dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
8028 intel_dp_init(dev, PCH_DP_D);
8030 } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
8033 if (I915_READ(SDVOB) & SDVO_DETECTED) {
8034 DRM_DEBUG_KMS("probing SDVOB\n");
8035 found = intel_sdvo_init(dev, SDVOB, true);
8036 if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
8037 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
8038 intel_hdmi_init(dev, SDVOB);
8041 if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
8042 DRM_DEBUG_KMS("probing DP_B\n");
8043 intel_dp_init(dev, DP_B);
8047 /* Before G4X SDVOC doesn't have its own detect register */
8049 if (I915_READ(SDVOB) & SDVO_DETECTED) {
8050 DRM_DEBUG_KMS("probing SDVOC\n");
8051 found = intel_sdvo_init(dev, SDVOC, false);
8054 if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
8056 if (SUPPORTS_INTEGRATED_HDMI(dev)) {
8057 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
8058 intel_hdmi_init(dev, SDVOC);
8060 if (SUPPORTS_INTEGRATED_DP(dev)) {
8061 DRM_DEBUG_KMS("probing DP_C\n");
8062 intel_dp_init(dev, DP_C);
8066 if (SUPPORTS_INTEGRATED_DP(dev) &&
8067 (I915_READ(DP_D) & DP_DETECTED)) {
8068 DRM_DEBUG_KMS("probing DP_D\n");
8069 intel_dp_init(dev, DP_D);
8071 } else if (IS_GEN2(dev))
8072 intel_dvo_init(dev);
8074 if (SUPPORTS_TV(dev))
8077 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
8078 encoder->base.possible_crtcs = encoder->crtc_mask;
8079 encoder->base.possible_clones =
8080 intel_encoder_clones(dev, encoder->clone_mask);
8083 /* disable all the possible outputs/crtcs before entering KMS mode */
8084 drm_helper_disable_unused_functions(dev);
8086 if (HAS_PCH_SPLIT(dev))
8087 ironlake_init_pch_refclk(dev);
8090 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
8092 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
8094 drm_framebuffer_cleanup(fb);
8095 drm_gem_object_unreference_unlocked(&intel_fb->obj->base);
8100 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
8101 struct drm_file *file,
8102 unsigned int *handle)
8104 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
8105 struct drm_i915_gem_object *obj = intel_fb->obj;
8107 return drm_gem_handle_create(file, &obj->base, handle);
8110 static const struct drm_framebuffer_funcs intel_fb_funcs = {
8111 .destroy = intel_user_framebuffer_destroy,
8112 .create_handle = intel_user_framebuffer_create_handle,
8115 int intel_framebuffer_init(struct drm_device *dev,
8116 struct intel_framebuffer *intel_fb,
8117 struct drm_mode_fb_cmd2 *mode_cmd,
8118 struct drm_i915_gem_object *obj)
8122 if (obj->tiling_mode == I915_TILING_Y)
8125 if (mode_cmd->pitches[0] & 63)
8128 switch (mode_cmd->pixel_format) {
8129 case DRM_FORMAT_RGB332:
8130 case DRM_FORMAT_RGB565:
8131 case DRM_FORMAT_XRGB8888:
8132 case DRM_FORMAT_ARGB8888:
8133 case DRM_FORMAT_XRGB2101010:
8134 case DRM_FORMAT_ARGB2101010:
8135 /* RGB formats are common across chipsets */
8137 case DRM_FORMAT_YUYV:
8138 case DRM_FORMAT_UYVY:
8139 case DRM_FORMAT_YVYU:
8140 case DRM_FORMAT_VYUY:
8143 DRM_DEBUG_KMS("unsupported pixel format %u\n",
8144 mode_cmd->pixel_format);
8148 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
8150 DRM_ERROR("framebuffer init failed %d\n", ret);
8154 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
8155 intel_fb->obj = obj;
8159 static struct drm_framebuffer *
8160 intel_user_framebuffer_create(struct drm_device *dev,
8161 struct drm_file *filp,
8162 struct drm_mode_fb_cmd2 *mode_cmd)
8164 struct drm_i915_gem_object *obj;
8166 obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
8167 mode_cmd->handles[0]));
8168 if (&obj->base == NULL)
8169 return ERR_PTR(-ENOENT);
8171 return intel_framebuffer_create(dev, mode_cmd, obj);
8174 static const struct drm_mode_config_funcs intel_mode_funcs = {
8175 .fb_create = intel_user_framebuffer_create,
8176 .output_poll_changed = intel_fb_output_poll_changed,
8179 static struct drm_i915_gem_object *
8180 intel_alloc_context_page(struct drm_device *dev)
8182 struct drm_i915_gem_object *ctx;
8185 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
8187 ctx = i915_gem_alloc_object(dev, 4096);
8189 DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
8193 ret = i915_gem_object_pin(ctx, 4096, true);
8195 DRM_ERROR("failed to pin power context: %d\n", ret);
8199 ret = i915_gem_object_set_to_gtt_domain(ctx, 1);
8201 DRM_ERROR("failed to set-domain on power context: %d\n", ret);
8208 i915_gem_object_unpin(ctx);
8210 drm_gem_object_unreference(&ctx->base);
8211 mutex_unlock(&dev->struct_mutex);
8215 bool ironlake_set_drps(struct drm_device *dev, u8 val)
8217 struct drm_i915_private *dev_priv = dev->dev_private;
8220 rgvswctl = I915_READ16(MEMSWCTL);
8221 if (rgvswctl & MEMCTL_CMD_STS) {
8222 DRM_DEBUG("gpu busy, RCS change rejected\n");
8223 return false; /* still busy with another command */
8226 rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
8227 (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM;
8228 I915_WRITE16(MEMSWCTL, rgvswctl);
8229 POSTING_READ16(MEMSWCTL);
8231 rgvswctl |= MEMCTL_CMD_STS;
8232 I915_WRITE16(MEMSWCTL, rgvswctl);
8237 void ironlake_enable_drps(struct drm_device *dev)
8239 struct drm_i915_private *dev_priv = dev->dev_private;
8240 u32 rgvmodectl = I915_READ(MEMMODECTL);
8241 u8 fmax, fmin, fstart, vstart;
8243 /* Enable temp reporting */
8244 I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN);
8245 I915_WRITE16(TSC1, I915_READ(TSC1) | TSE);
8247 /* 100ms RC evaluation intervals */
8248 I915_WRITE(RCUPEI, 100000);
8249 I915_WRITE(RCDNEI, 100000);
8251 /* Set max/min thresholds to 90ms and 80ms respectively */
8252 I915_WRITE(RCBMAXAVG, 90000);
8253 I915_WRITE(RCBMINAVG, 80000);
8255 I915_WRITE(MEMIHYST, 1);
8257 /* Set up min, max, and cur for interrupt handling */
8258 fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT;
8259 fmin = (rgvmodectl & MEMMODE_FMIN_MASK);
8260 fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >>
8261 MEMMODE_FSTART_SHIFT;
8263 vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >>
8266 dev_priv->fmax = fmax; /* IPS callback will increase this */
8267 dev_priv->fstart = fstart;
8269 dev_priv->max_delay = fstart;
8270 dev_priv->min_delay = fmin;
8271 dev_priv->cur_delay = fstart;
8273 DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n",
8274 fmax, fmin, fstart);
8276 I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN);
8279 * Interrupts will be enabled in ironlake_irq_postinstall
8282 I915_WRITE(VIDSTART, vstart);
8283 POSTING_READ(VIDSTART);
8285 rgvmodectl |= MEMMODE_SWMODE_EN;
8286 I915_WRITE(MEMMODECTL, rgvmodectl);
8288 if (wait_for((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10))
8289 DRM_ERROR("stuck trying to change perf mode\n");
8292 ironlake_set_drps(dev, fstart);
8294 dev_priv->last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) +
8296 dev_priv->last_time1 = jiffies_to_msecs(jiffies);
8297 dev_priv->last_count2 = I915_READ(0x112f4);
8298 getrawmonotonic(&dev_priv->last_time2);
8301 void ironlake_disable_drps(struct drm_device *dev)
8303 struct drm_i915_private *dev_priv = dev->dev_private;
8304 u16 rgvswctl = I915_READ16(MEMSWCTL);
8306 /* Ack interrupts, disable EFC interrupt */
8307 I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN);
8308 I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG);
8309 I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT);
8310 I915_WRITE(DEIIR, DE_PCU_EVENT);
8311 I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT);
8313 /* Go back to the starting frequency */
8314 ironlake_set_drps(dev, dev_priv->fstart);
8316 rgvswctl |= MEMCTL_CMD_STS;
8317 I915_WRITE(MEMSWCTL, rgvswctl);
8322 void gen6_set_rps(struct drm_device *dev, u8 val)
8324 struct drm_i915_private *dev_priv = dev->dev_private;
8327 swreq = (val & 0x3ff) << 25;
8328 I915_WRITE(GEN6_RPNSWREQ, swreq);
8331 void gen6_disable_rps(struct drm_device *dev)
8333 struct drm_i915_private *dev_priv = dev->dev_private;
8335 I915_WRITE(GEN6_RPNSWREQ, 1 << 31);
8336 I915_WRITE(GEN6_PMINTRMSK, 0xffffffff);
8337 I915_WRITE(GEN6_PMIER, 0);
8338 /* Complete PM interrupt masking here doesn't race with the rps work
8339 * item again unmasking PM interrupts because that is using a different
8340 * register (PMIMR) to mask PM interrupts. The only risk is in leaving
8341 * stale bits in PMIIR and PMIMR which gen6_enable_rps will clean up. */
8343 spin_lock_irq(&dev_priv->rps_lock);
8344 dev_priv->pm_iir = 0;
8345 spin_unlock_irq(&dev_priv->rps_lock);
8347 I915_WRITE(GEN6_PMIIR, I915_READ(GEN6_PMIIR));
8350 static unsigned long intel_pxfreq(u32 vidfreq)
8353 int div = (vidfreq & 0x3f0000) >> 16;
8354 int post = (vidfreq & 0x3000) >> 12;
8355 int pre = (vidfreq & 0x7);
8360 freq = ((div * 133333) / ((1<<post) * pre));
8365 void intel_init_emon(struct drm_device *dev)
8367 struct drm_i915_private *dev_priv = dev->dev_private;
8372 /* Disable to program */
8376 /* Program energy weights for various events */
8377 I915_WRITE(SDEW, 0x15040d00);
8378 I915_WRITE(CSIEW0, 0x007f0000);
8379 I915_WRITE(CSIEW1, 0x1e220004);
8380 I915_WRITE(CSIEW2, 0x04000004);
8382 for (i = 0; i < 5; i++)
8383 I915_WRITE(PEW + (i * 4), 0);
8384 for (i = 0; i < 3; i++)
8385 I915_WRITE(DEW + (i * 4), 0);
8387 /* Program P-state weights to account for frequency power adjustment */
8388 for (i = 0; i < 16; i++) {
8389 u32 pxvidfreq = I915_READ(PXVFREQ_BASE + (i * 4));
8390 unsigned long freq = intel_pxfreq(pxvidfreq);
8391 unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >>
8396 val *= (freq / 1000);
8398 val /= (127*127*900);
8400 DRM_ERROR("bad pxval: %ld\n", val);
8403 /* Render standby states get 0 weight */
8407 for (i = 0; i < 4; i++) {
8408 u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) |
8409 (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]);
8410 I915_WRITE(PXW + (i * 4), val);
8413 /* Adjust magic regs to magic values (more experimental results) */
8414 I915_WRITE(OGW0, 0);
8415 I915_WRITE(OGW1, 0);
8416 I915_WRITE(EG0, 0x00007f00);
8417 I915_WRITE(EG1, 0x0000000e);
8418 I915_WRITE(EG2, 0x000e0000);
8419 I915_WRITE(EG3, 0x68000300);
8420 I915_WRITE(EG4, 0x42000000);
8421 I915_WRITE(EG5, 0x00140031);
8425 for (i = 0; i < 8; i++)
8426 I915_WRITE(PXWL + (i * 4), 0);
8428 /* Enable PMON + select events */
8429 I915_WRITE(ECR, 0x80000019);
8431 lcfuse = I915_READ(LCFUSE02);
8433 dev_priv->corr = (lcfuse & LCFUSE_HIV_MASK);
8436 static bool intel_enable_rc6(struct drm_device *dev)
8439 * Respect the kernel parameter if it is set
8441 if (i915_enable_rc6 >= 0)
8442 return i915_enable_rc6;
8445 * Disable RC6 on Ironlake
8447 if (INTEL_INFO(dev)->gen == 5)
8451 * Disable rc6 on Sandybridge
8453 if (INTEL_INFO(dev)->gen == 6) {
8454 DRM_DEBUG_DRIVER("Sandybridge: RC6 disabled\n");
8457 DRM_DEBUG_DRIVER("RC6 enabled\n");
8461 void gen6_enable_rps(struct drm_i915_private *dev_priv)
8463 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
8464 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
8465 u32 pcu_mbox, rc6_mask = 0;
8467 int cur_freq, min_freq, max_freq;
8470 /* Here begins a magic sequence of register writes to enable
8471 * auto-downclocking.
8473 * Perhaps there might be some value in exposing these to
8476 I915_WRITE(GEN6_RC_STATE, 0);
8477 mutex_lock(&dev_priv->dev->struct_mutex);
8479 /* Clear the DBG now so we don't confuse earlier errors */
8480 if ((gtfifodbg = I915_READ(GTFIFODBG))) {
8481 DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg);
8482 I915_WRITE(GTFIFODBG, gtfifodbg);
8485 gen6_gt_force_wake_get(dev_priv);
8487 /* disable the counters and set deterministic thresholds */
8488 I915_WRITE(GEN6_RC_CONTROL, 0);
8490 I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16);
8491 I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30);
8492 I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30);
8493 I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000);
8494 I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25);
8496 for (i = 0; i < I915_NUM_RINGS; i++)
8497 I915_WRITE(RING_MAX_IDLE(dev_priv->ring[i].mmio_base), 10);
8499 I915_WRITE(GEN6_RC_SLEEP, 0);
8500 I915_WRITE(GEN6_RC1e_THRESHOLD, 1000);
8501 I915_WRITE(GEN6_RC6_THRESHOLD, 50000);
8502 I915_WRITE(GEN6_RC6p_THRESHOLD, 100000);
8503 I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */
8505 if (intel_enable_rc6(dev_priv->dev))
8506 rc6_mask = GEN6_RC_CTL_RC6p_ENABLE |
8507 GEN6_RC_CTL_RC6_ENABLE;
8509 I915_WRITE(GEN6_RC_CONTROL,
8511 GEN6_RC_CTL_EI_MODE(1) |
8512 GEN6_RC_CTL_HW_ENABLE);
8514 I915_WRITE(GEN6_RPNSWREQ,
8515 GEN6_FREQUENCY(10) |
8517 GEN6_AGGRESSIVE_TURBO);
8518 I915_WRITE(GEN6_RC_VIDEO_FREQ,
8519 GEN6_FREQUENCY(12));
8521 I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000);
8522 I915_WRITE(GEN6_RP_INTERRUPT_LIMITS,
8525 I915_WRITE(GEN6_RP_UP_THRESHOLD, 10000);
8526 I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 1000000);
8527 I915_WRITE(GEN6_RP_UP_EI, 100000);
8528 I915_WRITE(GEN6_RP_DOWN_EI, 5000000);
8529 I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
8530 I915_WRITE(GEN6_RP_CONTROL,
8531 GEN6_RP_MEDIA_TURBO |
8532 GEN6_RP_MEDIA_HW_MODE |
8533 GEN6_RP_MEDIA_IS_GFX |
8535 GEN6_RP_UP_BUSY_AVG |
8536 GEN6_RP_DOWN_IDLE_CONT);
8538 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
8540 DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
8542 I915_WRITE(GEN6_PCODE_DATA, 0);
8543 I915_WRITE(GEN6_PCODE_MAILBOX,
8545 GEN6_PCODE_WRITE_MIN_FREQ_TABLE);
8546 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
8548 DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
8550 min_freq = (rp_state_cap & 0xff0000) >> 16;
8551 max_freq = rp_state_cap & 0xff;
8552 cur_freq = (gt_perf_status & 0xff00) >> 8;
8554 /* Check for overclock support */
8555 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
8557 DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
8558 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_READ_OC_PARAMS);
8559 pcu_mbox = I915_READ(GEN6_PCODE_DATA);
8560 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
8562 DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
8563 if (pcu_mbox & (1<<31)) { /* OC supported */
8564 max_freq = pcu_mbox & 0xff;
8565 DRM_DEBUG_DRIVER("overclocking supported, adjusting frequency max to %dMHz\n", pcu_mbox * 50);
8568 /* In units of 100MHz */
8569 dev_priv->max_delay = max_freq;
8570 dev_priv->min_delay = min_freq;
8571 dev_priv->cur_delay = cur_freq;
8573 /* requires MSI enabled */
8574 I915_WRITE(GEN6_PMIER,
8575 GEN6_PM_MBOX_EVENT |
8576 GEN6_PM_THERMAL_EVENT |
8577 GEN6_PM_RP_DOWN_TIMEOUT |
8578 GEN6_PM_RP_UP_THRESHOLD |
8579 GEN6_PM_RP_DOWN_THRESHOLD |
8580 GEN6_PM_RP_UP_EI_EXPIRED |
8581 GEN6_PM_RP_DOWN_EI_EXPIRED);
8582 spin_lock_irq(&dev_priv->rps_lock);
8583 WARN_ON(dev_priv->pm_iir != 0);
8584 I915_WRITE(GEN6_PMIMR, 0);
8585 spin_unlock_irq(&dev_priv->rps_lock);
8586 /* enable all PM interrupts */
8587 I915_WRITE(GEN6_PMINTRMSK, 0);
8589 gen6_gt_force_wake_put(dev_priv);
8590 mutex_unlock(&dev_priv->dev->struct_mutex);
8593 void gen6_update_ring_freq(struct drm_i915_private *dev_priv)
8596 int gpu_freq, ia_freq, max_ia_freq;
8597 int scaling_factor = 180;
8599 max_ia_freq = cpufreq_quick_get_max(0);
8601 * Default to measured freq if none found, PCU will ensure we don't go
8605 max_ia_freq = tsc_khz;
8607 /* Convert from kHz to MHz */
8608 max_ia_freq /= 1000;
8610 mutex_lock(&dev_priv->dev->struct_mutex);
8613 * For each potential GPU frequency, load a ring frequency we'd like
8614 * to use for memory access. We do this by specifying the IA frequency
8615 * the PCU should use as a reference to determine the ring frequency.
8617 for (gpu_freq = dev_priv->max_delay; gpu_freq >= dev_priv->min_delay;
8619 int diff = dev_priv->max_delay - gpu_freq;
8622 * For GPU frequencies less than 750MHz, just use the lowest
8625 if (gpu_freq < min_freq)
8628 ia_freq = max_ia_freq - ((diff * scaling_factor) / 2);
8629 ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100);
8631 I915_WRITE(GEN6_PCODE_DATA,
8632 (ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT) |
8634 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
8635 GEN6_PCODE_WRITE_MIN_FREQ_TABLE);
8636 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
8637 GEN6_PCODE_READY) == 0, 10)) {
8638 DRM_ERROR("pcode write of freq table timed out\n");
8643 mutex_unlock(&dev_priv->dev->struct_mutex);
8646 static void ironlake_init_clock_gating(struct drm_device *dev)
8648 struct drm_i915_private *dev_priv = dev->dev_private;
8649 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
8651 /* Required for FBC */
8652 dspclk_gate |= DPFCUNIT_CLOCK_GATE_DISABLE |
8653 DPFCRUNIT_CLOCK_GATE_DISABLE |
8654 DPFDUNIT_CLOCK_GATE_DISABLE;
8655 /* Required for CxSR */
8656 dspclk_gate |= DPARBUNIT_CLOCK_GATE_DISABLE;
8658 I915_WRITE(PCH_3DCGDIS0,
8659 MARIUNIT_CLOCK_GATE_DISABLE |
8660 SVSMUNIT_CLOCK_GATE_DISABLE);
8661 I915_WRITE(PCH_3DCGDIS1,
8662 VFMUNIT_CLOCK_GATE_DISABLE);
8664 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
8667 * According to the spec the following bits should be set in
8668 * order to enable memory self-refresh
8669 * The bit 22/21 of 0x42004
8670 * The bit 5 of 0x42020
8671 * The bit 15 of 0x45000
8673 I915_WRITE(ILK_DISPLAY_CHICKEN2,
8674 (I915_READ(ILK_DISPLAY_CHICKEN2) |
8675 ILK_DPARB_GATE | ILK_VSDPFD_FULL));
8676 I915_WRITE(ILK_DSPCLK_GATE,
8677 (I915_READ(ILK_DSPCLK_GATE) |
8678 ILK_DPARB_CLK_GATE));
8679 I915_WRITE(DISP_ARB_CTL,
8680 (I915_READ(DISP_ARB_CTL) |
8682 I915_WRITE(WM3_LP_ILK, 0);
8683 I915_WRITE(WM2_LP_ILK, 0);
8684 I915_WRITE(WM1_LP_ILK, 0);
8687 * Based on the document from hardware guys the following bits
8688 * should be set unconditionally in order to enable FBC.
8689 * The bit 22 of 0x42000
8690 * The bit 22 of 0x42004
8691 * The bit 7,8,9 of 0x42020.
8693 if (IS_IRONLAKE_M(dev)) {
8694 I915_WRITE(ILK_DISPLAY_CHICKEN1,
8695 I915_READ(ILK_DISPLAY_CHICKEN1) |
8697 I915_WRITE(ILK_DISPLAY_CHICKEN2,
8698 I915_READ(ILK_DISPLAY_CHICKEN2) |
8700 I915_WRITE(ILK_DSPCLK_GATE,
8701 I915_READ(ILK_DSPCLK_GATE) |
8707 I915_WRITE(ILK_DISPLAY_CHICKEN2,
8708 I915_READ(ILK_DISPLAY_CHICKEN2) |
8709 ILK_ELPIN_409_SELECT);
8710 I915_WRITE(_3D_CHICKEN2,
8711 _3D_CHICKEN2_WM_READ_PIPELINED << 16 |
8712 _3D_CHICKEN2_WM_READ_PIPELINED);
8715 static void gen6_init_clock_gating(struct drm_device *dev)
8717 struct drm_i915_private *dev_priv = dev->dev_private;
8719 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
8721 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
8723 I915_WRITE(ILK_DISPLAY_CHICKEN2,
8724 I915_READ(ILK_DISPLAY_CHICKEN2) |
8725 ILK_ELPIN_409_SELECT);
8727 I915_WRITE(WM3_LP_ILK, 0);
8728 I915_WRITE(WM2_LP_ILK, 0);
8729 I915_WRITE(WM1_LP_ILK, 0);
8731 /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock
8732 * gating disable must be set. Failure to set it results in
8733 * flickering pixels due to Z write ordering failures after
8734 * some amount of runtime in the Mesa "fire" demo, and Unigine
8735 * Sanctuary and Tropics, and apparently anything else with
8736 * alpha test or pixel discard.
8738 * According to the spec, bit 11 (RCCUNIT) must also be set,
8739 * but we didn't debug actual testcases to find it out.
8741 I915_WRITE(GEN6_UCGCTL2,
8742 GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
8743 GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
8746 * According to the spec the following bits should be
8747 * set in order to enable memory self-refresh and fbc:
8748 * The bit21 and bit22 of 0x42000
8749 * The bit21 and bit22 of 0x42004
8750 * The bit5 and bit7 of 0x42020
8751 * The bit14 of 0x70180
8752 * The bit14 of 0x71180
8754 I915_WRITE(ILK_DISPLAY_CHICKEN1,
8755 I915_READ(ILK_DISPLAY_CHICKEN1) |
8756 ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS);
8757 I915_WRITE(ILK_DISPLAY_CHICKEN2,
8758 I915_READ(ILK_DISPLAY_CHICKEN2) |
8759 ILK_DPARB_GATE | ILK_VSDPFD_FULL);
8760 I915_WRITE(ILK_DSPCLK_GATE,
8761 I915_READ(ILK_DSPCLK_GATE) |
8762 ILK_DPARB_CLK_GATE |
8765 for_each_pipe(pipe) {
8766 I915_WRITE(DSPCNTR(pipe),
8767 I915_READ(DSPCNTR(pipe)) |
8768 DISPPLANE_TRICKLE_FEED_DISABLE);
8769 intel_flush_display_plane(dev_priv, pipe);
8773 static void ivybridge_init_clock_gating(struct drm_device *dev)
8775 struct drm_i915_private *dev_priv = dev->dev_private;
8777 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
8779 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
8781 I915_WRITE(WM3_LP_ILK, 0);
8782 I915_WRITE(WM2_LP_ILK, 0);
8783 I915_WRITE(WM1_LP_ILK, 0);
8785 I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE);
8787 I915_WRITE(IVB_CHICKEN3,
8788 CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
8789 CHICKEN3_DGMG_DONE_FIX_DISABLE);
8791 for_each_pipe(pipe) {
8792 I915_WRITE(DSPCNTR(pipe),
8793 I915_READ(DSPCNTR(pipe)) |
8794 DISPPLANE_TRICKLE_FEED_DISABLE);
8795 intel_flush_display_plane(dev_priv, pipe);
8799 static void valleyview_init_clock_gating(struct drm_device *dev)
8801 struct drm_i915_private *dev_priv = dev->dev_private;
8803 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
8805 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
8807 I915_WRITE(WM3_LP_ILK, 0);
8808 I915_WRITE(WM2_LP_ILK, 0);
8809 I915_WRITE(WM1_LP_ILK, 0);
8811 /* According to the spec, bit 13 (RCZUNIT) must be set on IVB.
8812 * This implements the WaDisableRCZUnitClockGating workaround.
8814 I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
8816 I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE);
8818 I915_WRITE(IVB_CHICKEN3,
8819 CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
8820 CHICKEN3_DGMG_DONE_FIX_DISABLE);
8822 /* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */
8823 I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
8824 GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);
8826 /* WaApplyL3ControlAndL3ChickenMode requires those two on Ivy Bridge */
8827 I915_WRITE(GEN7_L3CNTLREG1, GEN7_WA_FOR_GEN7_L3_CONTROL);
8828 I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, GEN7_WA_L3_CHICKEN_MODE);
8830 /* This is required by WaCatErrorRejectionIssue */
8831 I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
8832 I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
8833 GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
8835 for_each_pipe(pipe) {
8836 I915_WRITE(DSPCNTR(pipe),
8837 I915_READ(DSPCNTR(pipe)) |
8838 DISPPLANE_TRICKLE_FEED_DISABLE);
8839 intel_flush_display_plane(dev_priv, pipe);
8842 I915_WRITE(CACHE_MODE_1, I915_READ(CACHE_MODE_1) |
8843 (PIXEL_SUBSPAN_COLLECT_OPT_DISABLE << 16) |
8844 PIXEL_SUBSPAN_COLLECT_OPT_DISABLE);
8847 static void g4x_init_clock_gating(struct drm_device *dev)
8849 struct drm_i915_private *dev_priv = dev->dev_private;
8850 uint32_t dspclk_gate;
8852 I915_WRITE(RENCLK_GATE_D1, 0);
8853 I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
8854 GS_UNIT_CLOCK_GATE_DISABLE |
8855 CL_UNIT_CLOCK_GATE_DISABLE);
8856 I915_WRITE(RAMCLK_GATE_D, 0);
8857 dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
8858 OVRUNIT_CLOCK_GATE_DISABLE |
8859 OVCUNIT_CLOCK_GATE_DISABLE;
8861 dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
8862 I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
8865 static void crestline_init_clock_gating(struct drm_device *dev)
8867 struct drm_i915_private *dev_priv = dev->dev_private;
8869 I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
8870 I915_WRITE(RENCLK_GATE_D2, 0);
8871 I915_WRITE(DSPCLK_GATE_D, 0);
8872 I915_WRITE(RAMCLK_GATE_D, 0);
8873 I915_WRITE16(DEUC, 0);
8876 static void broadwater_init_clock_gating(struct drm_device *dev)
8878 struct drm_i915_private *dev_priv = dev->dev_private;
8880 I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
8881 I965_RCC_CLOCK_GATE_DISABLE |
8882 I965_RCPB_CLOCK_GATE_DISABLE |
8883 I965_ISC_CLOCK_GATE_DISABLE |
8884 I965_FBC_CLOCK_GATE_DISABLE);
8885 I915_WRITE(RENCLK_GATE_D2, 0);
8888 static void gen3_init_clock_gating(struct drm_device *dev)
8890 struct drm_i915_private *dev_priv = dev->dev_private;
8891 u32 dstate = I915_READ(D_STATE);
8893 dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
8894 DSTATE_DOT_CLOCK_GATING;
8895 I915_WRITE(D_STATE, dstate);
8898 static void i85x_init_clock_gating(struct drm_device *dev)
8900 struct drm_i915_private *dev_priv = dev->dev_private;
8902 I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
8905 static void i830_init_clock_gating(struct drm_device *dev)
8907 struct drm_i915_private *dev_priv = dev->dev_private;
8909 I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
8912 static void ibx_init_clock_gating(struct drm_device *dev)
8914 struct drm_i915_private *dev_priv = dev->dev_private;
8917 * On Ibex Peak and Cougar Point, we need to disable clock
8918 * gating for the panel power sequencer or it will fail to
8919 * start up when no ports are active.
8921 I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
8924 static void cpt_init_clock_gating(struct drm_device *dev)
8926 struct drm_i915_private *dev_priv = dev->dev_private;
8930 * On Ibex Peak and Cougar Point, we need to disable clock
8931 * gating for the panel power sequencer or it will fail to
8932 * start up when no ports are active.
8934 I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
8935 I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |
8936 DPLS_EDP_PPS_FIX_DIS);
8937 /* Without this, mode sets may fail silently on FDI */
8939 I915_WRITE(TRANS_CHICKEN2(pipe), TRANS_AUTOTRAIN_GEN_STALL_DIS);
8942 static void ironlake_teardown_rc6(struct drm_device *dev)
8944 struct drm_i915_private *dev_priv = dev->dev_private;
8946 if (dev_priv->renderctx) {
8947 i915_gem_object_unpin(dev_priv->renderctx);
8948 drm_gem_object_unreference(&dev_priv->renderctx->base);
8949 dev_priv->renderctx = NULL;
8952 if (dev_priv->pwrctx) {
8953 i915_gem_object_unpin(dev_priv->pwrctx);
8954 drm_gem_object_unreference(&dev_priv->pwrctx->base);
8955 dev_priv->pwrctx = NULL;
8959 static void ironlake_disable_rc6(struct drm_device *dev)
8961 struct drm_i915_private *dev_priv = dev->dev_private;
8963 if (I915_READ(PWRCTXA)) {
8964 /* Wake the GPU, prevent RC6, then restore RSTDBYCTL */
8965 I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) | RCX_SW_EXIT);
8966 wait_for(((I915_READ(RSTDBYCTL) & RSX_STATUS_MASK) == RSX_STATUS_ON),
8969 I915_WRITE(PWRCTXA, 0);
8970 POSTING_READ(PWRCTXA);
8972 I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
8973 POSTING_READ(RSTDBYCTL);
8976 ironlake_teardown_rc6(dev);
8979 static int ironlake_setup_rc6(struct drm_device *dev)
8981 struct drm_i915_private *dev_priv = dev->dev_private;
8983 if (dev_priv->renderctx == NULL)
8984 dev_priv->renderctx = intel_alloc_context_page(dev);
8985 if (!dev_priv->renderctx)
8988 if (dev_priv->pwrctx == NULL)
8989 dev_priv->pwrctx = intel_alloc_context_page(dev);
8990 if (!dev_priv->pwrctx) {
8991 ironlake_teardown_rc6(dev);
8998 void ironlake_enable_rc6(struct drm_device *dev)
9000 struct drm_i915_private *dev_priv = dev->dev_private;
9003 /* rc6 disabled by default due to repeated reports of hanging during
9006 if (!intel_enable_rc6(dev))
9009 mutex_lock(&dev->struct_mutex);
9010 ret = ironlake_setup_rc6(dev);
9012 mutex_unlock(&dev->struct_mutex);
9017 * GPU can automatically power down the render unit if given a page
9020 ret = BEGIN_LP_RING(6);
9022 ironlake_teardown_rc6(dev);
9023 mutex_unlock(&dev->struct_mutex);
9027 OUT_RING(MI_SUSPEND_FLUSH | MI_SUSPEND_FLUSH_EN);
9028 OUT_RING(MI_SET_CONTEXT);
9029 OUT_RING(dev_priv->renderctx->gtt_offset |
9031 MI_SAVE_EXT_STATE_EN |
9032 MI_RESTORE_EXT_STATE_EN |
9033 MI_RESTORE_INHIBIT);
9034 OUT_RING(MI_SUSPEND_FLUSH);
9040 * Wait for the command parser to advance past MI_SET_CONTEXT. The HW
9041 * does an implicit flush, combined with MI_FLUSH above, it should be
9042 * safe to assume that renderctx is valid
9044 ret = intel_wait_ring_idle(LP_RING(dev_priv));
9046 DRM_ERROR("failed to enable ironlake power power savings\n");
9047 ironlake_teardown_rc6(dev);
9048 mutex_unlock(&dev->struct_mutex);
9052 I915_WRITE(PWRCTXA, dev_priv->pwrctx->gtt_offset | PWRCTX_EN);
9053 I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
9054 mutex_unlock(&dev->struct_mutex);
9057 void intel_init_clock_gating(struct drm_device *dev)
9059 struct drm_i915_private *dev_priv = dev->dev_private;
9061 dev_priv->display.init_clock_gating(dev);
9063 if (dev_priv->display.init_pch_clock_gating)
9064 dev_priv->display.init_pch_clock_gating(dev);
9067 /* Set up chip specific display functions */
9068 static void intel_init_display(struct drm_device *dev)
9070 struct drm_i915_private *dev_priv = dev->dev_private;
9072 /* We always want a DPMS function */
9073 if (HAS_PCH_SPLIT(dev)) {
9074 dev_priv->display.dpms = ironlake_crtc_dpms;
9075 dev_priv->display.crtc_mode_set = ironlake_crtc_mode_set;
9076 dev_priv->display.update_plane = ironlake_update_plane;
9078 dev_priv->display.dpms = i9xx_crtc_dpms;
9079 dev_priv->display.crtc_mode_set = i9xx_crtc_mode_set;
9080 dev_priv->display.update_plane = i9xx_update_plane;
9083 if (I915_HAS_FBC(dev)) {
9084 if (HAS_PCH_SPLIT(dev)) {
9085 dev_priv->display.fbc_enabled = ironlake_fbc_enabled;
9086 dev_priv->display.enable_fbc = ironlake_enable_fbc;
9087 dev_priv->display.disable_fbc = ironlake_disable_fbc;
9088 } else if (IS_GM45(dev)) {
9089 dev_priv->display.fbc_enabled = g4x_fbc_enabled;
9090 dev_priv->display.enable_fbc = g4x_enable_fbc;
9091 dev_priv->display.disable_fbc = g4x_disable_fbc;
9092 } else if (IS_CRESTLINE(dev)) {
9093 dev_priv->display.fbc_enabled = i8xx_fbc_enabled;
9094 dev_priv->display.enable_fbc = i8xx_enable_fbc;
9095 dev_priv->display.disable_fbc = i8xx_disable_fbc;
9097 /* 855GM needs testing */
9100 /* Returns the core display clock speed */
9101 if (IS_VALLEYVIEW(dev))
9102 dev_priv->display.get_display_clock_speed =
9103 valleyview_get_display_clock_speed;
9104 else if (IS_I945G(dev) || (IS_G33(dev) && !IS_PINEVIEW_M(dev)))
9105 dev_priv->display.get_display_clock_speed =
9106 i945_get_display_clock_speed;
9107 else if (IS_I915G(dev))
9108 dev_priv->display.get_display_clock_speed =
9109 i915_get_display_clock_speed;
9110 else if (IS_I945GM(dev) || IS_845G(dev) || IS_PINEVIEW_M(dev))
9111 dev_priv->display.get_display_clock_speed =
9112 i9xx_misc_get_display_clock_speed;
9113 else if (IS_I915GM(dev))
9114 dev_priv->display.get_display_clock_speed =
9115 i915gm_get_display_clock_speed;
9116 else if (IS_I865G(dev))
9117 dev_priv->display.get_display_clock_speed =
9118 i865_get_display_clock_speed;
9119 else if (IS_I85X(dev))
9120 dev_priv->display.get_display_clock_speed =
9121 i855_get_display_clock_speed;
9123 dev_priv->display.get_display_clock_speed =
9124 i830_get_display_clock_speed;
9126 /* For FIFO watermark updates */
9127 if (HAS_PCH_SPLIT(dev)) {
9128 dev_priv->display.force_wake_get = __gen6_gt_force_wake_get;
9129 dev_priv->display.force_wake_put = __gen6_gt_force_wake_put;
9131 /* IVB configs may use multi-threaded forcewake */
9132 if (IS_IVYBRIDGE(dev)) {
9135 /* A small trick here - if the bios hasn't configured MT forcewake,
9136 * and if the device is in RC6, then force_wake_mt_get will not wake
9137 * the device and the ECOBUS read will return zero. Which will be
9138 * (correctly) interpreted by the test below as MT forcewake being
9141 mutex_lock(&dev->struct_mutex);
9142 __gen6_gt_force_wake_mt_get(dev_priv);
9143 ecobus = I915_READ_NOTRACE(ECOBUS);
9144 __gen6_gt_force_wake_mt_put(dev_priv);
9145 mutex_unlock(&dev->struct_mutex);
9147 if (ecobus & FORCEWAKE_MT_ENABLE) {
9148 DRM_DEBUG_KMS("Using MT version of forcewake\n");
9149 dev_priv->display.force_wake_get =
9150 __gen6_gt_force_wake_mt_get;
9151 dev_priv->display.force_wake_put =
9152 __gen6_gt_force_wake_mt_put;
9156 if (HAS_PCH_IBX(dev))
9157 dev_priv->display.init_pch_clock_gating = ibx_init_clock_gating;
9158 else if (HAS_PCH_CPT(dev))
9159 dev_priv->display.init_pch_clock_gating = cpt_init_clock_gating;
9162 if (I915_READ(MLTR_ILK) & ILK_SRLT_MASK)
9163 dev_priv->display.update_wm = ironlake_update_wm;
9165 DRM_DEBUG_KMS("Failed to get proper latency. "
9167 dev_priv->display.update_wm = NULL;
9169 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
9170 dev_priv->display.init_clock_gating = ironlake_init_clock_gating;
9171 dev_priv->display.write_eld = ironlake_write_eld;
9172 } else if (IS_GEN6(dev)) {
9173 if (SNB_READ_WM0_LATENCY()) {
9174 dev_priv->display.update_wm = sandybridge_update_wm;
9175 dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm;
9177 DRM_DEBUG_KMS("Failed to read display plane latency. "
9179 dev_priv->display.update_wm = NULL;
9181 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
9182 dev_priv->display.init_clock_gating = gen6_init_clock_gating;
9183 dev_priv->display.write_eld = ironlake_write_eld;
9184 } else if (IS_IVYBRIDGE(dev)) {
9185 /* FIXME: detect B0+ stepping and use auto training */
9186 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
9187 if (SNB_READ_WM0_LATENCY()) {
9188 dev_priv->display.update_wm = sandybridge_update_wm;
9189 dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm;
9191 DRM_DEBUG_KMS("Failed to read display plane latency. "
9193 dev_priv->display.update_wm = NULL;
9195 dev_priv->display.init_clock_gating = ivybridge_init_clock_gating;
9196 dev_priv->display.write_eld = ironlake_write_eld;
9198 dev_priv->display.update_wm = NULL;
9199 } else if (IS_VALLEYVIEW(dev)) {
9200 dev_priv->display.update_wm = valleyview_update_wm;
9201 dev_priv->display.init_clock_gating =
9202 valleyview_init_clock_gating;
9203 } else if (IS_PINEVIEW(dev)) {
9204 if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev),
9207 dev_priv->mem_freq)) {
9208 DRM_INFO("failed to find known CxSR latency "
9209 "(found ddr%s fsb freq %d, mem freq %d), "
9211 (dev_priv->is_ddr3 == 1) ? "3" : "2",
9212 dev_priv->fsb_freq, dev_priv->mem_freq);
9213 /* Disable CxSR and never update its watermark again */
9214 pineview_disable_cxsr(dev);
9215 dev_priv->display.update_wm = NULL;
9217 dev_priv->display.update_wm = pineview_update_wm;
9218 dev_priv->display.init_clock_gating = gen3_init_clock_gating;
9219 } else if (IS_G4X(dev)) {
9220 dev_priv->display.write_eld = g4x_write_eld;
9221 dev_priv->display.update_wm = g4x_update_wm;
9222 dev_priv->display.init_clock_gating = g4x_init_clock_gating;
9223 } else if (IS_GEN4(dev)) {
9224 dev_priv->display.update_wm = i965_update_wm;
9225 if (IS_CRESTLINE(dev))
9226 dev_priv->display.init_clock_gating = crestline_init_clock_gating;
9227 else if (IS_BROADWATER(dev))
9228 dev_priv->display.init_clock_gating = broadwater_init_clock_gating;
9229 } else if (IS_GEN3(dev)) {
9230 dev_priv->display.update_wm = i9xx_update_wm;
9231 dev_priv->display.get_fifo_size = i9xx_get_fifo_size;
9232 dev_priv->display.init_clock_gating = gen3_init_clock_gating;
9233 } else if (IS_I865G(dev)) {
9234 dev_priv->display.update_wm = i830_update_wm;
9235 dev_priv->display.init_clock_gating = i85x_init_clock_gating;
9236 dev_priv->display.get_fifo_size = i830_get_fifo_size;
9237 } else if (IS_I85X(dev)) {
9238 dev_priv->display.update_wm = i9xx_update_wm;
9239 dev_priv->display.get_fifo_size = i85x_get_fifo_size;
9240 dev_priv->display.init_clock_gating = i85x_init_clock_gating;
9242 dev_priv->display.update_wm = i830_update_wm;
9243 dev_priv->display.init_clock_gating = i830_init_clock_gating;
9245 dev_priv->display.get_fifo_size = i845_get_fifo_size;
9247 dev_priv->display.get_fifo_size = i830_get_fifo_size;
9250 /* Default just returns -ENODEV to indicate unsupported */
9251 dev_priv->display.queue_flip = intel_default_queue_flip;
9253 switch (INTEL_INFO(dev)->gen) {
9255 dev_priv->display.queue_flip = intel_gen2_queue_flip;
9259 dev_priv->display.queue_flip = intel_gen3_queue_flip;
9264 dev_priv->display.queue_flip = intel_gen4_queue_flip;
9268 dev_priv->display.queue_flip = intel_gen6_queue_flip;
9271 dev_priv->display.queue_flip = intel_gen7_queue_flip;
9277 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
9278 * resume, or other times. This quirk makes sure that's the case for
9281 static void quirk_pipea_force(struct drm_device *dev)
9283 struct drm_i915_private *dev_priv = dev->dev_private;
9285 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
9286 DRM_DEBUG_DRIVER("applying pipe a force quirk\n");
9290 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
9292 static void quirk_ssc_force_disable(struct drm_device *dev)
9294 struct drm_i915_private *dev_priv = dev->dev_private;
9295 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
9299 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
9302 static void quirk_invert_brightness(struct drm_device *dev)
9304 struct drm_i915_private *dev_priv = dev->dev_private;
9305 dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
9308 struct intel_quirk {
9310 int subsystem_vendor;
9311 int subsystem_device;
9312 void (*hook)(struct drm_device *dev);
9315 struct intel_quirk intel_quirks[] = {
9316 /* HP Mini needs pipe A force quirk (LP: #322104) */
9317 { 0x27ae, 0x103c, 0x361a, quirk_pipea_force },
9319 /* Thinkpad R31 needs pipe A force quirk */
9320 { 0x3577, 0x1014, 0x0505, quirk_pipea_force },
9321 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
9322 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
9324 /* ThinkPad X30 needs pipe A force quirk (LP: #304614) */
9325 { 0x3577, 0x1014, 0x0513, quirk_pipea_force },
9326 /* ThinkPad X40 needs pipe A force quirk */
9328 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
9329 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
9331 /* 855 & before need to leave pipe A & dpll A up */
9332 { 0x3582, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
9333 { 0x2562, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
9335 /* Lenovo U160 cannot use SSC on LVDS */
9336 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
9338 /* Sony Vaio Y cannot use SSC on LVDS */
9339 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
9341 /* Acer Aspire 5734Z must invert backlight brightness */
9342 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
9345 static void intel_init_quirks(struct drm_device *dev)
9347 struct pci_dev *d = dev->pdev;
9350 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
9351 struct intel_quirk *q = &intel_quirks[i];
9353 if (d->device == q->device &&
9354 (d->subsystem_vendor == q->subsystem_vendor ||
9355 q->subsystem_vendor == PCI_ANY_ID) &&
9356 (d->subsystem_device == q->subsystem_device ||
9357 q->subsystem_device == PCI_ANY_ID))
9362 /* Disable the VGA plane that we never use */
9363 static void i915_disable_vga(struct drm_device *dev)
9365 struct drm_i915_private *dev_priv = dev->dev_private;
9369 if (HAS_PCH_SPLIT(dev))
9370 vga_reg = CPU_VGACNTRL;
9374 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
9375 outb(1, VGA_SR_INDEX);
9376 sr1 = inb(VGA_SR_DATA);
9377 outb(sr1 | 1<<5, VGA_SR_DATA);
9378 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
9381 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
9382 POSTING_READ(vga_reg);
9385 void intel_modeset_init(struct drm_device *dev)
9387 struct drm_i915_private *dev_priv = dev->dev_private;
9390 drm_mode_config_init(dev);
9392 dev->mode_config.min_width = 0;
9393 dev->mode_config.min_height = 0;
9395 dev->mode_config.preferred_depth = 24;
9396 dev->mode_config.prefer_shadow = 1;
9398 dev->mode_config.funcs = (void *)&intel_mode_funcs;
9400 intel_init_quirks(dev);
9402 intel_init_display(dev);
9405 dev->mode_config.max_width = 2048;
9406 dev->mode_config.max_height = 2048;
9407 } else if (IS_GEN3(dev)) {
9408 dev->mode_config.max_width = 4096;
9409 dev->mode_config.max_height = 4096;
9411 dev->mode_config.max_width = 8192;
9412 dev->mode_config.max_height = 8192;
9414 dev->mode_config.fb_base = dev->agp->base;
9416 DRM_DEBUG_KMS("%d display pipe%s available.\n",
9417 dev_priv->num_pipe, dev_priv->num_pipe > 1 ? "s" : "");
9419 for (i = 0; i < dev_priv->num_pipe; i++) {
9420 intel_crtc_init(dev, i);
9421 ret = intel_plane_init(dev, i);
9423 DRM_DEBUG_KMS("plane %d init failed: %d\n", i, ret);
9426 /* Just disable it once at startup */
9427 i915_disable_vga(dev);
9428 intel_setup_outputs(dev);
9430 intel_init_clock_gating(dev);
9432 if (IS_IRONLAKE_M(dev)) {
9433 ironlake_enable_drps(dev);
9434 intel_init_emon(dev);
9437 if (IS_GEN6(dev) || IS_GEN7(dev)) {
9438 gen6_enable_rps(dev_priv);
9439 gen6_update_ring_freq(dev_priv);
9442 INIT_WORK(&dev_priv->idle_work, intel_idle_update);
9443 setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
9444 (unsigned long)dev);
9447 void intel_modeset_gem_init(struct drm_device *dev)
9449 if (IS_IRONLAKE_M(dev))
9450 ironlake_enable_rc6(dev);
9452 intel_setup_overlay(dev);
9455 void intel_modeset_cleanup(struct drm_device *dev)
9457 struct drm_i915_private *dev_priv = dev->dev_private;
9458 struct drm_crtc *crtc;
9459 struct intel_crtc *intel_crtc;
9461 drm_kms_helper_poll_fini(dev);
9462 mutex_lock(&dev->struct_mutex);
9464 intel_unregister_dsm_handler();
9467 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
9468 /* Skip inactive CRTCs */
9472 intel_crtc = to_intel_crtc(crtc);
9473 intel_increase_pllclock(crtc);
9476 intel_disable_fbc(dev);
9478 if (IS_IRONLAKE_M(dev))
9479 ironlake_disable_drps(dev);
9480 if (IS_GEN6(dev) || IS_GEN7(dev))
9481 gen6_disable_rps(dev);
9483 if (IS_IRONLAKE_M(dev))
9484 ironlake_disable_rc6(dev);
9486 if (IS_VALLEYVIEW(dev))
9489 mutex_unlock(&dev->struct_mutex);
9491 /* Disable the irq before mode object teardown, for the irq might
9492 * enqueue unpin/hotplug work. */
9493 drm_irq_uninstall(dev);
9494 cancel_work_sync(&dev_priv->hotplug_work);
9495 cancel_work_sync(&dev_priv->rps_work);
9497 /* flush any delayed tasks or pending work */
9498 flush_scheduled_work();
9500 /* Shut off idle work before the crtcs get freed. */
9501 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
9502 intel_crtc = to_intel_crtc(crtc);
9503 del_timer_sync(&intel_crtc->idle_timer);
9505 del_timer_sync(&dev_priv->idle_timer);
9506 cancel_work_sync(&dev_priv->idle_work);
9508 drm_mode_config_cleanup(dev);
9512 * Return which encoder is currently attached for connector.
9514 struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
9516 return &intel_attached_encoder(connector)->base;
9519 void intel_connector_attach_encoder(struct intel_connector *connector,
9520 struct intel_encoder *encoder)
9522 connector->encoder = encoder;
9523 drm_mode_connector_attach_encoder(&connector->base,
9528 * set vga decode state - true == enable VGA decode
9530 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
9532 struct drm_i915_private *dev_priv = dev->dev_private;
9535 pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
9537 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
9539 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
9540 pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);
9544 #ifdef CONFIG_DEBUG_FS
9545 #include <linux/seq_file.h>
9547 struct intel_display_error_state {
9548 struct intel_cursor_error_state {
9555 struct intel_pipe_error_state {
9567 struct intel_plane_error_state {
9578 struct intel_display_error_state *
9579 intel_display_capture_error_state(struct drm_device *dev)
9581 drm_i915_private_t *dev_priv = dev->dev_private;
9582 struct intel_display_error_state *error;
9585 error = kmalloc(sizeof(*error), GFP_ATOMIC);
9589 for (i = 0; i < 2; i++) {
9590 error->cursor[i].control = I915_READ(CURCNTR(i));
9591 error->cursor[i].position = I915_READ(CURPOS(i));
9592 error->cursor[i].base = I915_READ(CURBASE(i));
9594 error->plane[i].control = I915_READ(DSPCNTR(i));
9595 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
9596 error->plane[i].size = I915_READ(DSPSIZE(i));
9597 error->plane[i].pos = I915_READ(DSPPOS(i));
9598 error->plane[i].addr = I915_READ(DSPADDR(i));
9599 if (INTEL_INFO(dev)->gen >= 4) {
9600 error->plane[i].surface = I915_READ(DSPSURF(i));
9601 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
9604 error->pipe[i].conf = I915_READ(PIPECONF(i));
9605 error->pipe[i].source = I915_READ(PIPESRC(i));
9606 error->pipe[i].htotal = I915_READ(HTOTAL(i));
9607 error->pipe[i].hblank = I915_READ(HBLANK(i));
9608 error->pipe[i].hsync = I915_READ(HSYNC(i));
9609 error->pipe[i].vtotal = I915_READ(VTOTAL(i));
9610 error->pipe[i].vblank = I915_READ(VBLANK(i));
9611 error->pipe[i].vsync = I915_READ(VSYNC(i));
9618 intel_display_print_error_state(struct seq_file *m,
9619 struct drm_device *dev,
9620 struct intel_display_error_state *error)
9624 for (i = 0; i < 2; i++) {
9625 seq_printf(m, "Pipe [%d]:\n", i);
9626 seq_printf(m, " CONF: %08x\n", error->pipe[i].conf);
9627 seq_printf(m, " SRC: %08x\n", error->pipe[i].source);
9628 seq_printf(m, " HTOTAL: %08x\n", error->pipe[i].htotal);
9629 seq_printf(m, " HBLANK: %08x\n", error->pipe[i].hblank);
9630 seq_printf(m, " HSYNC: %08x\n", error->pipe[i].hsync);
9631 seq_printf(m, " VTOTAL: %08x\n", error->pipe[i].vtotal);
9632 seq_printf(m, " VBLANK: %08x\n", error->pipe[i].vblank);
9633 seq_printf(m, " VSYNC: %08x\n", error->pipe[i].vsync);
9635 seq_printf(m, "Plane [%d]:\n", i);
9636 seq_printf(m, " CNTR: %08x\n", error->plane[i].control);
9637 seq_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
9638 seq_printf(m, " SIZE: %08x\n", error->plane[i].size);
9639 seq_printf(m, " POS: %08x\n", error->plane[i].pos);
9640 seq_printf(m, " ADDR: %08x\n", error->plane[i].addr);
9641 if (INTEL_INFO(dev)->gen >= 4) {
9642 seq_printf(m, " SURF: %08x\n", error->plane[i].surface);
9643 seq_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
9646 seq_printf(m, "Cursor [%d]:\n", i);
9647 seq_printf(m, " CNTR: %08x\n", error->cursor[i].control);
9648 seq_printf(m, " POS: %08x\n", error->cursor[i].position);
9649 seq_printf(m, " BASE: %08x\n", error->cursor[i].base);