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Merge branch 'drm-sti-next-2015-02-04' of git://git.linaro.org/people/benjamin.gaigna...
[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_overlay.c
1 /*
2 * Copyright © 2009
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 * Daniel Vetter <daniel@ffwll.ch>
25 *
26 * Derived from Xorg ddx, xf86-video-intel, src/i830_video.c
27 */
28 #include <drm/drmP.h>
29 #include <drm/i915_drm.h>
30 #include "i915_drv.h"
31 #include "i915_reg.h"
32 #include "intel_drv.h"
33
34 /* Limits for overlay size. According to intel doc, the real limits are:
35 * Y width: 4095, UV width (planar): 2047, Y height: 2047,
36 * UV width (planar): * 1023. But the xorg thinks 2048 for height and width. Use
37 * the mininum of both. */
38 #define IMAGE_MAX_WIDTH 2048
39 #define IMAGE_MAX_HEIGHT 2046 /* 2 * 1023 */
40 /* on 830 and 845 these large limits result in the card hanging */
41 #define IMAGE_MAX_WIDTH_LEGACY 1024
42 #define IMAGE_MAX_HEIGHT_LEGACY 1088
43
44 /* overlay register definitions */
45 /* OCMD register */
46 #define OCMD_TILED_SURFACE (0x1<<19)
47 #define OCMD_MIRROR_MASK (0x3<<17)
48 #define OCMD_MIRROR_MODE (0x3<<17)
49 #define OCMD_MIRROR_HORIZONTAL (0x1<<17)
50 #define OCMD_MIRROR_VERTICAL (0x2<<17)
51 #define OCMD_MIRROR_BOTH (0x3<<17)
52 #define OCMD_BYTEORDER_MASK (0x3<<14) /* zero for YUYV or FOURCC YUY2 */
53 #define OCMD_UV_SWAP (0x1<<14) /* YVYU */
54 #define OCMD_Y_SWAP (0x2<<14) /* UYVY or FOURCC UYVY */
55 #define OCMD_Y_AND_UV_SWAP (0x3<<14) /* VYUY */
56 #define OCMD_SOURCE_FORMAT_MASK (0xf<<10)
57 #define OCMD_RGB_888 (0x1<<10) /* not in i965 Intel docs */
58 #define OCMD_RGB_555 (0x2<<10) /* not in i965 Intel docs */
59 #define OCMD_RGB_565 (0x3<<10) /* not in i965 Intel docs */
60 #define OCMD_YUV_422_PACKED (0x8<<10)
61 #define OCMD_YUV_411_PACKED (0x9<<10) /* not in i965 Intel docs */
62 #define OCMD_YUV_420_PLANAR (0xc<<10)
63 #define OCMD_YUV_422_PLANAR (0xd<<10)
64 #define OCMD_YUV_410_PLANAR (0xe<<10) /* also 411 */
65 #define OCMD_TVSYNCFLIP_PARITY (0x1<<9)
66 #define OCMD_TVSYNCFLIP_ENABLE (0x1<<7)
67 #define OCMD_BUF_TYPE_MASK (0x1<<5)
68 #define OCMD_BUF_TYPE_FRAME (0x0<<5)
69 #define OCMD_BUF_TYPE_FIELD (0x1<<5)
70 #define OCMD_TEST_MODE (0x1<<4)
71 #define OCMD_BUFFER_SELECT (0x3<<2)
72 #define OCMD_BUFFER0 (0x0<<2)
73 #define OCMD_BUFFER1 (0x1<<2)
74 #define OCMD_FIELD_SELECT (0x1<<2)
75 #define OCMD_FIELD0 (0x0<<1)
76 #define OCMD_FIELD1 (0x1<<1)
77 #define OCMD_ENABLE (0x1<<0)
78
79 /* OCONFIG register */
80 #define OCONF_PIPE_MASK (0x1<<18)
81 #define OCONF_PIPE_A (0x0<<18)
82 #define OCONF_PIPE_B (0x1<<18)
83 #define OCONF_GAMMA2_ENABLE (0x1<<16)
84 #define OCONF_CSC_MODE_BT601 (0x0<<5)
85 #define OCONF_CSC_MODE_BT709 (0x1<<5)
86 #define OCONF_CSC_BYPASS (0x1<<4)
87 #define OCONF_CC_OUT_8BIT (0x1<<3)
88 #define OCONF_TEST_MODE (0x1<<2)
89 #define OCONF_THREE_LINE_BUFFER (0x1<<0)
90 #define OCONF_TWO_LINE_BUFFER (0x0<<0)
91
92 /* DCLRKM (dst-key) register */
93 #define DST_KEY_ENABLE (0x1<<31)
94 #define CLK_RGB24_MASK 0x0
95 #define CLK_RGB16_MASK 0x070307
96 #define CLK_RGB15_MASK 0x070707
97 #define CLK_RGB8I_MASK 0xffffff
98
99 #define RGB16_TO_COLORKEY(c) \
100 (((c & 0xF800) << 8) | ((c & 0x07E0) << 5) | ((c & 0x001F) << 3))
101 #define RGB15_TO_COLORKEY(c) \
102 (((c & 0x7c00) << 9) | ((c & 0x03E0) << 6) | ((c & 0x001F) << 3))
103
104 /* overlay flip addr flag */
105 #define OFC_UPDATE 0x1
106
107 /* polyphase filter coefficients */
108 #define N_HORIZ_Y_TAPS 5
109 #define N_VERT_Y_TAPS 3
110 #define N_HORIZ_UV_TAPS 3
111 #define N_VERT_UV_TAPS 3
112 #define N_PHASES 17
113 #define MAX_TAPS 5
114
115 /* memory bufferd overlay registers */
116 struct overlay_registers {
117 u32 OBUF_0Y;
118 u32 OBUF_1Y;
119 u32 OBUF_0U;
120 u32 OBUF_0V;
121 u32 OBUF_1U;
122 u32 OBUF_1V;
123 u32 OSTRIDE;
124 u32 YRGB_VPH;
125 u32 UV_VPH;
126 u32 HORZ_PH;
127 u32 INIT_PHS;
128 u32 DWINPOS;
129 u32 DWINSZ;
130 u32 SWIDTH;
131 u32 SWIDTHSW;
132 u32 SHEIGHT;
133 u32 YRGBSCALE;
134 u32 UVSCALE;
135 u32 OCLRC0;
136 u32 OCLRC1;
137 u32 DCLRKV;
138 u32 DCLRKM;
139 u32 SCLRKVH;
140 u32 SCLRKVL;
141 u32 SCLRKEN;
142 u32 OCONFIG;
143 u32 OCMD;
144 u32 RESERVED1; /* 0x6C */
145 u32 OSTART_0Y;
146 u32 OSTART_1Y;
147 u32 OSTART_0U;
148 u32 OSTART_0V;
149 u32 OSTART_1U;
150 u32 OSTART_1V;
151 u32 OTILEOFF_0Y;
152 u32 OTILEOFF_1Y;
153 u32 OTILEOFF_0U;
154 u32 OTILEOFF_0V;
155 u32 OTILEOFF_1U;
156 u32 OTILEOFF_1V;
157 u32 FASTHSCALE; /* 0xA0 */
158 u32 UVSCALEV; /* 0xA4 */
159 u32 RESERVEDC[(0x200 - 0xA8) / 4]; /* 0xA8 - 0x1FC */
160 u16 Y_VCOEFS[N_VERT_Y_TAPS * N_PHASES]; /* 0x200 */
161 u16 RESERVEDD[0x100 / 2 - N_VERT_Y_TAPS * N_PHASES];
162 u16 Y_HCOEFS[N_HORIZ_Y_TAPS * N_PHASES]; /* 0x300 */
163 u16 RESERVEDE[0x200 / 2 - N_HORIZ_Y_TAPS * N_PHASES];
164 u16 UV_VCOEFS[N_VERT_UV_TAPS * N_PHASES]; /* 0x500 */
165 u16 RESERVEDF[0x100 / 2 - N_VERT_UV_TAPS * N_PHASES];
166 u16 UV_HCOEFS[N_HORIZ_UV_TAPS * N_PHASES]; /* 0x600 */
167 u16 RESERVEDG[0x100 / 2 - N_HORIZ_UV_TAPS * N_PHASES];
168 };
169
170 struct intel_overlay {
171 struct drm_device *dev;
172 struct intel_crtc *crtc;
173 struct drm_i915_gem_object *vid_bo;
174 struct drm_i915_gem_object *old_vid_bo;
175 int active;
176 int pfit_active;
177 u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
178 u32 color_key;
179 u32 brightness, contrast, saturation;
180 u32 old_xscale, old_yscale;
181 /* register access */
182 u32 flip_addr;
183 struct drm_i915_gem_object *reg_bo;
184 /* flip handling */
185 struct drm_i915_gem_request *last_flip_req;
186 void (*flip_tail)(struct intel_overlay *);
187 };
188
189 static struct overlay_registers __iomem *
190 intel_overlay_map_regs(struct intel_overlay *overlay)
191 {
192 struct drm_i915_private *dev_priv = overlay->dev->dev_private;
193 struct overlay_registers __iomem *regs;
194
195 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
196 regs = (struct overlay_registers __iomem *)overlay->reg_bo->phys_handle->vaddr;
197 else
198 regs = io_mapping_map_wc(dev_priv->gtt.mappable,
199 i915_gem_obj_ggtt_offset(overlay->reg_bo));
200
201 return regs;
202 }
203
204 static void intel_overlay_unmap_regs(struct intel_overlay *overlay,
205 struct overlay_registers __iomem *regs)
206 {
207 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
208 io_mapping_unmap(regs);
209 }
210
211 static int intel_overlay_do_wait_request(struct intel_overlay *overlay,
212 void (*tail)(struct intel_overlay *))
213 {
214 struct drm_device *dev = overlay->dev;
215 struct drm_i915_private *dev_priv = dev->dev_private;
216 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
217 int ret;
218
219 BUG_ON(overlay->last_flip_req);
220 i915_gem_request_assign(&overlay->last_flip_req,
221 ring->outstanding_lazy_request);
222 ret = i915_add_request(ring);
223 if (ret)
224 return ret;
225
226 overlay->flip_tail = tail;
227 ret = i915_wait_request(overlay->last_flip_req);
228 if (ret)
229 return ret;
230 i915_gem_retire_requests(dev);
231
232 i915_gem_request_assign(&overlay->last_flip_req, NULL);
233 return 0;
234 }
235
236 /* overlay needs to be disable in OCMD reg */
237 static int intel_overlay_on(struct intel_overlay *overlay)
238 {
239 struct drm_device *dev = overlay->dev;
240 struct drm_i915_private *dev_priv = dev->dev_private;
241 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
242 int ret;
243
244 BUG_ON(overlay->active);
245 overlay->active = 1;
246
247 WARN_ON(IS_I830(dev) && !(dev_priv->quirks & QUIRK_PIPEA_FORCE));
248
249 ret = intel_ring_begin(ring, 4);
250 if (ret)
251 return ret;
252
253 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_ON);
254 intel_ring_emit(ring, overlay->flip_addr | OFC_UPDATE);
255 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
256 intel_ring_emit(ring, MI_NOOP);
257 intel_ring_advance(ring);
258
259 return intel_overlay_do_wait_request(overlay, NULL);
260 }
261
262 /* overlay needs to be enabled in OCMD reg */
263 static int intel_overlay_continue(struct intel_overlay *overlay,
264 bool load_polyphase_filter)
265 {
266 struct drm_device *dev = overlay->dev;
267 struct drm_i915_private *dev_priv = dev->dev_private;
268 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
269 u32 flip_addr = overlay->flip_addr;
270 u32 tmp;
271 int ret;
272
273 BUG_ON(!overlay->active);
274
275 if (load_polyphase_filter)
276 flip_addr |= OFC_UPDATE;
277
278 /* check for underruns */
279 tmp = I915_READ(DOVSTA);
280 if (tmp & (1 << 17))
281 DRM_DEBUG("overlay underrun, DOVSTA: %x\n", tmp);
282
283 ret = intel_ring_begin(ring, 2);
284 if (ret)
285 return ret;
286
287 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
288 intel_ring_emit(ring, flip_addr);
289 intel_ring_advance(ring);
290
291 WARN_ON(overlay->last_flip_req);
292 i915_gem_request_assign(&overlay->last_flip_req,
293 ring->outstanding_lazy_request);
294 return i915_add_request(ring);
295 }
296
297 static void intel_overlay_release_old_vid_tail(struct intel_overlay *overlay)
298 {
299 struct drm_i915_gem_object *obj = overlay->old_vid_bo;
300
301 i915_gem_object_ggtt_unpin(obj);
302 drm_gem_object_unreference(&obj->base);
303
304 overlay->old_vid_bo = NULL;
305 }
306
307 static void intel_overlay_off_tail(struct intel_overlay *overlay)
308 {
309 struct drm_i915_gem_object *obj = overlay->vid_bo;
310
311 /* never have the overlay hw on without showing a frame */
312 BUG_ON(!overlay->vid_bo);
313
314 i915_gem_object_ggtt_unpin(obj);
315 drm_gem_object_unreference(&obj->base);
316 overlay->vid_bo = NULL;
317
318 overlay->crtc->overlay = NULL;
319 overlay->crtc = NULL;
320 overlay->active = 0;
321 }
322
323 /* overlay needs to be disabled in OCMD reg */
324 static int intel_overlay_off(struct intel_overlay *overlay)
325 {
326 struct drm_device *dev = overlay->dev;
327 struct drm_i915_private *dev_priv = dev->dev_private;
328 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
329 u32 flip_addr = overlay->flip_addr;
330 int ret;
331
332 BUG_ON(!overlay->active);
333
334 /* According to intel docs the overlay hw may hang (when switching
335 * off) without loading the filter coeffs. It is however unclear whether
336 * this applies to the disabling of the overlay or to the switching off
337 * of the hw. Do it in both cases */
338 flip_addr |= OFC_UPDATE;
339
340 ret = intel_ring_begin(ring, 6);
341 if (ret)
342 return ret;
343
344 /* wait for overlay to go idle */
345 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
346 intel_ring_emit(ring, flip_addr);
347 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
348 /* turn overlay off */
349 if (IS_I830(dev)) {
350 /* Workaround: Don't disable the overlay fully, since otherwise
351 * it dies on the next OVERLAY_ON cmd. */
352 intel_ring_emit(ring, MI_NOOP);
353 intel_ring_emit(ring, MI_NOOP);
354 intel_ring_emit(ring, MI_NOOP);
355 } else {
356 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
357 intel_ring_emit(ring, flip_addr);
358 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
359 }
360 intel_ring_advance(ring);
361
362 return intel_overlay_do_wait_request(overlay, intel_overlay_off_tail);
363 }
364
365 /* recover from an interruption due to a signal
366 * We have to be careful not to repeat work forever an make forward progess. */
367 static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay)
368 {
369 int ret;
370
371 if (overlay->last_flip_req == NULL)
372 return 0;
373
374 ret = i915_wait_request(overlay->last_flip_req);
375 if (ret)
376 return ret;
377 i915_gem_retire_requests(overlay->dev);
378
379 if (overlay->flip_tail)
380 overlay->flip_tail(overlay);
381
382 i915_gem_request_assign(&overlay->last_flip_req, NULL);
383 return 0;
384 }
385
386 /* Wait for pending overlay flip and release old frame.
387 * Needs to be called before the overlay register are changed
388 * via intel_overlay_(un)map_regs
389 */
390 static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
391 {
392 struct drm_device *dev = overlay->dev;
393 struct drm_i915_private *dev_priv = dev->dev_private;
394 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
395 int ret;
396
397 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
398
399 /* Only wait if there is actually an old frame to release to
400 * guarantee forward progress.
401 */
402 if (!overlay->old_vid_bo)
403 return 0;
404
405 if (I915_READ(ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT) {
406 /* synchronous slowpath */
407 ret = intel_ring_begin(ring, 2);
408 if (ret)
409 return ret;
410
411 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
412 intel_ring_emit(ring, MI_NOOP);
413 intel_ring_advance(ring);
414
415 ret = intel_overlay_do_wait_request(overlay,
416 intel_overlay_release_old_vid_tail);
417 if (ret)
418 return ret;
419 }
420
421 intel_overlay_release_old_vid_tail(overlay);
422
423
424 i915_gem_track_fb(overlay->old_vid_bo, NULL,
425 INTEL_FRONTBUFFER_OVERLAY(overlay->crtc->pipe));
426 return 0;
427 }
428
429 void intel_overlay_reset(struct drm_i915_private *dev_priv)
430 {
431 struct intel_overlay *overlay = dev_priv->overlay;
432
433 if (!overlay)
434 return;
435
436 intel_overlay_release_old_vid(overlay);
437
438 overlay->last_flip_req = NULL;
439 overlay->old_xscale = 0;
440 overlay->old_yscale = 0;
441 overlay->crtc = NULL;
442 overlay->active = false;
443 }
444
445 struct put_image_params {
446 int format;
447 short dst_x;
448 short dst_y;
449 short dst_w;
450 short dst_h;
451 short src_w;
452 short src_scan_h;
453 short src_scan_w;
454 short src_h;
455 short stride_Y;
456 short stride_UV;
457 int offset_Y;
458 int offset_U;
459 int offset_V;
460 };
461
462 static int packed_depth_bytes(u32 format)
463 {
464 switch (format & I915_OVERLAY_DEPTH_MASK) {
465 case I915_OVERLAY_YUV422:
466 return 4;
467 case I915_OVERLAY_YUV411:
468 /* return 6; not implemented */
469 default:
470 return -EINVAL;
471 }
472 }
473
474 static int packed_width_bytes(u32 format, short width)
475 {
476 switch (format & I915_OVERLAY_DEPTH_MASK) {
477 case I915_OVERLAY_YUV422:
478 return width << 1;
479 default:
480 return -EINVAL;
481 }
482 }
483
484 static int uv_hsubsampling(u32 format)
485 {
486 switch (format & I915_OVERLAY_DEPTH_MASK) {
487 case I915_OVERLAY_YUV422:
488 case I915_OVERLAY_YUV420:
489 return 2;
490 case I915_OVERLAY_YUV411:
491 case I915_OVERLAY_YUV410:
492 return 4;
493 default:
494 return -EINVAL;
495 }
496 }
497
498 static int uv_vsubsampling(u32 format)
499 {
500 switch (format & I915_OVERLAY_DEPTH_MASK) {
501 case I915_OVERLAY_YUV420:
502 case I915_OVERLAY_YUV410:
503 return 2;
504 case I915_OVERLAY_YUV422:
505 case I915_OVERLAY_YUV411:
506 return 1;
507 default:
508 return -EINVAL;
509 }
510 }
511
512 static u32 calc_swidthsw(struct drm_device *dev, u32 offset, u32 width)
513 {
514 u32 mask, shift, ret;
515 if (IS_GEN2(dev)) {
516 mask = 0x1f;
517 shift = 5;
518 } else {
519 mask = 0x3f;
520 shift = 6;
521 }
522 ret = ((offset + width + mask) >> shift) - (offset >> shift);
523 if (!IS_GEN2(dev))
524 ret <<= 1;
525 ret -= 1;
526 return ret << 2;
527 }
528
529 static const u16 y_static_hcoeffs[N_HORIZ_Y_TAPS * N_PHASES] = {
530 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0,
531 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440,
532 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0,
533 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380,
534 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320,
535 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0,
536 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260,
537 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200,
538 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0,
539 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160,
540 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120,
541 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0,
542 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0,
543 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060,
544 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040,
545 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020,
546 0xb000, 0x3000, 0x0800, 0x3000, 0xb000
547 };
548
549 static const u16 uv_static_hcoeffs[N_HORIZ_UV_TAPS * N_PHASES] = {
550 0x3000, 0x1800, 0x1800, 0xb000, 0x18d0, 0x2e60,
551 0xb000, 0x1990, 0x2ce0, 0xb020, 0x1a68, 0x2b40,
552 0xb040, 0x1b20, 0x29e0, 0xb060, 0x1bd8, 0x2880,
553 0xb080, 0x1c88, 0x3e60, 0xb0a0, 0x1d28, 0x3c00,
554 0xb0c0, 0x1db8, 0x39e0, 0xb0e0, 0x1e40, 0x37e0,
555 0xb100, 0x1eb8, 0x3620, 0xb100, 0x1f18, 0x34a0,
556 0xb100, 0x1f68, 0x3360, 0xb0e0, 0x1fa8, 0x3240,
557 0xb0c0, 0x1fe0, 0x3140, 0xb060, 0x1ff0, 0x30a0,
558 0x3000, 0x0800, 0x3000
559 };
560
561 static void update_polyphase_filter(struct overlay_registers __iomem *regs)
562 {
563 memcpy_toio(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs));
564 memcpy_toio(regs->UV_HCOEFS, uv_static_hcoeffs,
565 sizeof(uv_static_hcoeffs));
566 }
567
568 static bool update_scaling_factors(struct intel_overlay *overlay,
569 struct overlay_registers __iomem *regs,
570 struct put_image_params *params)
571 {
572 /* fixed point with a 12 bit shift */
573 u32 xscale, yscale, xscale_UV, yscale_UV;
574 #define FP_SHIFT 12
575 #define FRACT_MASK 0xfff
576 bool scale_changed = false;
577 int uv_hscale = uv_hsubsampling(params->format);
578 int uv_vscale = uv_vsubsampling(params->format);
579
580 if (params->dst_w > 1)
581 xscale = ((params->src_scan_w - 1) << FP_SHIFT)
582 /(params->dst_w);
583 else
584 xscale = 1 << FP_SHIFT;
585
586 if (params->dst_h > 1)
587 yscale = ((params->src_scan_h - 1) << FP_SHIFT)
588 /(params->dst_h);
589 else
590 yscale = 1 << FP_SHIFT;
591
592 /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/
593 xscale_UV = xscale/uv_hscale;
594 yscale_UV = yscale/uv_vscale;
595 /* make the Y scale to UV scale ratio an exact multiply */
596 xscale = xscale_UV * uv_hscale;
597 yscale = yscale_UV * uv_vscale;
598 /*} else {
599 xscale_UV = 0;
600 yscale_UV = 0;
601 }*/
602
603 if (xscale != overlay->old_xscale || yscale != overlay->old_yscale)
604 scale_changed = true;
605 overlay->old_xscale = xscale;
606 overlay->old_yscale = yscale;
607
608 iowrite32(((yscale & FRACT_MASK) << 20) |
609 ((xscale >> FP_SHIFT) << 16) |
610 ((xscale & FRACT_MASK) << 3),
611 &regs->YRGBSCALE);
612
613 iowrite32(((yscale_UV & FRACT_MASK) << 20) |
614 ((xscale_UV >> FP_SHIFT) << 16) |
615 ((xscale_UV & FRACT_MASK) << 3),
616 &regs->UVSCALE);
617
618 iowrite32((((yscale >> FP_SHIFT) << 16) |
619 ((yscale_UV >> FP_SHIFT) << 0)),
620 &regs->UVSCALEV);
621
622 if (scale_changed)
623 update_polyphase_filter(regs);
624
625 return scale_changed;
626 }
627
628 static void update_colorkey(struct intel_overlay *overlay,
629 struct overlay_registers __iomem *regs)
630 {
631 u32 key = overlay->color_key;
632
633 switch (overlay->crtc->base.primary->fb->bits_per_pixel) {
634 case 8:
635 iowrite32(0, &regs->DCLRKV);
636 iowrite32(CLK_RGB8I_MASK | DST_KEY_ENABLE, &regs->DCLRKM);
637 break;
638
639 case 16:
640 if (overlay->crtc->base.primary->fb->depth == 15) {
641 iowrite32(RGB15_TO_COLORKEY(key), &regs->DCLRKV);
642 iowrite32(CLK_RGB15_MASK | DST_KEY_ENABLE,
643 &regs->DCLRKM);
644 } else {
645 iowrite32(RGB16_TO_COLORKEY(key), &regs->DCLRKV);
646 iowrite32(CLK_RGB16_MASK | DST_KEY_ENABLE,
647 &regs->DCLRKM);
648 }
649 break;
650
651 case 24:
652 case 32:
653 iowrite32(key, &regs->DCLRKV);
654 iowrite32(CLK_RGB24_MASK | DST_KEY_ENABLE, &regs->DCLRKM);
655 break;
656 }
657 }
658
659 static u32 overlay_cmd_reg(struct put_image_params *params)
660 {
661 u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0;
662
663 if (params->format & I915_OVERLAY_YUV_PLANAR) {
664 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
665 case I915_OVERLAY_YUV422:
666 cmd |= OCMD_YUV_422_PLANAR;
667 break;
668 case I915_OVERLAY_YUV420:
669 cmd |= OCMD_YUV_420_PLANAR;
670 break;
671 case I915_OVERLAY_YUV411:
672 case I915_OVERLAY_YUV410:
673 cmd |= OCMD_YUV_410_PLANAR;
674 break;
675 }
676 } else { /* YUV packed */
677 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
678 case I915_OVERLAY_YUV422:
679 cmd |= OCMD_YUV_422_PACKED;
680 break;
681 case I915_OVERLAY_YUV411:
682 cmd |= OCMD_YUV_411_PACKED;
683 break;
684 }
685
686 switch (params->format & I915_OVERLAY_SWAP_MASK) {
687 case I915_OVERLAY_NO_SWAP:
688 break;
689 case I915_OVERLAY_UV_SWAP:
690 cmd |= OCMD_UV_SWAP;
691 break;
692 case I915_OVERLAY_Y_SWAP:
693 cmd |= OCMD_Y_SWAP;
694 break;
695 case I915_OVERLAY_Y_AND_UV_SWAP:
696 cmd |= OCMD_Y_AND_UV_SWAP;
697 break;
698 }
699 }
700
701 return cmd;
702 }
703
704 static int intel_overlay_do_put_image(struct intel_overlay *overlay,
705 struct drm_i915_gem_object *new_bo,
706 struct put_image_params *params)
707 {
708 int ret, tmp_width;
709 struct overlay_registers __iomem *regs;
710 bool scale_changed = false;
711 struct drm_device *dev = overlay->dev;
712 u32 swidth, swidthsw, sheight, ostride;
713 enum pipe pipe = overlay->crtc->pipe;
714
715 BUG_ON(!mutex_is_locked(&dev->struct_mutex));
716 BUG_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
717 BUG_ON(!overlay);
718
719 ret = intel_overlay_release_old_vid(overlay);
720 if (ret != 0)
721 return ret;
722
723 ret = i915_gem_object_pin_to_display_plane(new_bo, 0, NULL);
724 if (ret != 0)
725 return ret;
726
727 ret = i915_gem_object_put_fence(new_bo);
728 if (ret)
729 goto out_unpin;
730
731 if (!overlay->active) {
732 u32 oconfig;
733 regs = intel_overlay_map_regs(overlay);
734 if (!regs) {
735 ret = -ENOMEM;
736 goto out_unpin;
737 }
738 oconfig = OCONF_CC_OUT_8BIT;
739 if (IS_GEN4(overlay->dev))
740 oconfig |= OCONF_CSC_MODE_BT709;
741 oconfig |= pipe == 0 ?
742 OCONF_PIPE_A : OCONF_PIPE_B;
743 iowrite32(oconfig, &regs->OCONFIG);
744 intel_overlay_unmap_regs(overlay, regs);
745
746 ret = intel_overlay_on(overlay);
747 if (ret != 0)
748 goto out_unpin;
749 }
750
751 regs = intel_overlay_map_regs(overlay);
752 if (!regs) {
753 ret = -ENOMEM;
754 goto out_unpin;
755 }
756
757 iowrite32((params->dst_y << 16) | params->dst_x, &regs->DWINPOS);
758 iowrite32((params->dst_h << 16) | params->dst_w, &regs->DWINSZ);
759
760 if (params->format & I915_OVERLAY_YUV_PACKED)
761 tmp_width = packed_width_bytes(params->format, params->src_w);
762 else
763 tmp_width = params->src_w;
764
765 swidth = params->src_w;
766 swidthsw = calc_swidthsw(overlay->dev, params->offset_Y, tmp_width);
767 sheight = params->src_h;
768 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_Y, &regs->OBUF_0Y);
769 ostride = params->stride_Y;
770
771 if (params->format & I915_OVERLAY_YUV_PLANAR) {
772 int uv_hscale = uv_hsubsampling(params->format);
773 int uv_vscale = uv_vsubsampling(params->format);
774 u32 tmp_U, tmp_V;
775 swidth |= (params->src_w/uv_hscale) << 16;
776 tmp_U = calc_swidthsw(overlay->dev, params->offset_U,
777 params->src_w/uv_hscale);
778 tmp_V = calc_swidthsw(overlay->dev, params->offset_V,
779 params->src_w/uv_hscale);
780 swidthsw |= max_t(u32, tmp_U, tmp_V) << 16;
781 sheight |= (params->src_h/uv_vscale) << 16;
782 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_U, &regs->OBUF_0U);
783 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_V, &regs->OBUF_0V);
784 ostride |= params->stride_UV << 16;
785 }
786
787 iowrite32(swidth, &regs->SWIDTH);
788 iowrite32(swidthsw, &regs->SWIDTHSW);
789 iowrite32(sheight, &regs->SHEIGHT);
790 iowrite32(ostride, &regs->OSTRIDE);
791
792 scale_changed = update_scaling_factors(overlay, regs, params);
793
794 update_colorkey(overlay, regs);
795
796 iowrite32(overlay_cmd_reg(params), &regs->OCMD);
797
798 intel_overlay_unmap_regs(overlay, regs);
799
800 ret = intel_overlay_continue(overlay, scale_changed);
801 if (ret)
802 goto out_unpin;
803
804 i915_gem_track_fb(overlay->vid_bo, new_bo,
805 INTEL_FRONTBUFFER_OVERLAY(pipe));
806
807 overlay->old_vid_bo = overlay->vid_bo;
808 overlay->vid_bo = new_bo;
809
810 intel_frontbuffer_flip(dev,
811 INTEL_FRONTBUFFER_OVERLAY(pipe));
812
813 return 0;
814
815 out_unpin:
816 i915_gem_object_ggtt_unpin(new_bo);
817 return ret;
818 }
819
820 int intel_overlay_switch_off(struct intel_overlay *overlay)
821 {
822 struct overlay_registers __iomem *regs;
823 struct drm_device *dev = overlay->dev;
824 int ret;
825
826 BUG_ON(!mutex_is_locked(&dev->struct_mutex));
827 BUG_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
828
829 ret = intel_overlay_recover_from_interrupt(overlay);
830 if (ret != 0)
831 return ret;
832
833 if (!overlay->active)
834 return 0;
835
836 ret = intel_overlay_release_old_vid(overlay);
837 if (ret != 0)
838 return ret;
839
840 regs = intel_overlay_map_regs(overlay);
841 iowrite32(0, &regs->OCMD);
842 intel_overlay_unmap_regs(overlay, regs);
843
844 ret = intel_overlay_off(overlay);
845 if (ret != 0)
846 return ret;
847
848 intel_overlay_off_tail(overlay);
849 return 0;
850 }
851
852 static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
853 struct intel_crtc *crtc)
854 {
855 if (!crtc->active)
856 return -EINVAL;
857
858 /* can't use the overlay with double wide pipe */
859 if (crtc->config->double_wide)
860 return -EINVAL;
861
862 return 0;
863 }
864
865 static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
866 {
867 struct drm_device *dev = overlay->dev;
868 struct drm_i915_private *dev_priv = dev->dev_private;
869 u32 pfit_control = I915_READ(PFIT_CONTROL);
870 u32 ratio;
871
872 /* XXX: This is not the same logic as in the xorg driver, but more in
873 * line with the intel documentation for the i965
874 */
875 if (INTEL_INFO(dev)->gen >= 4) {
876 /* on i965 use the PGM reg to read out the autoscaler values */
877 ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
878 } else {
879 if (pfit_control & VERT_AUTO_SCALE)
880 ratio = I915_READ(PFIT_AUTO_RATIOS);
881 else
882 ratio = I915_READ(PFIT_PGM_RATIOS);
883 ratio >>= PFIT_VERT_SCALE_SHIFT;
884 }
885
886 overlay->pfit_vscale_ratio = ratio;
887 }
888
889 static int check_overlay_dst(struct intel_overlay *overlay,
890 struct drm_intel_overlay_put_image *rec)
891 {
892 struct drm_display_mode *mode = &overlay->crtc->base.mode;
893
894 if (rec->dst_x < mode->hdisplay &&
895 rec->dst_x + rec->dst_width <= mode->hdisplay &&
896 rec->dst_y < mode->vdisplay &&
897 rec->dst_y + rec->dst_height <= mode->vdisplay)
898 return 0;
899 else
900 return -EINVAL;
901 }
902
903 static int check_overlay_scaling(struct put_image_params *rec)
904 {
905 u32 tmp;
906
907 /* downscaling limit is 8.0 */
908 tmp = ((rec->src_scan_h << 16) / rec->dst_h) >> 16;
909 if (tmp > 7)
910 return -EINVAL;
911 tmp = ((rec->src_scan_w << 16) / rec->dst_w) >> 16;
912 if (tmp > 7)
913 return -EINVAL;
914
915 return 0;
916 }
917
918 static int check_overlay_src(struct drm_device *dev,
919 struct drm_intel_overlay_put_image *rec,
920 struct drm_i915_gem_object *new_bo)
921 {
922 int uv_hscale = uv_hsubsampling(rec->flags);
923 int uv_vscale = uv_vsubsampling(rec->flags);
924 u32 stride_mask;
925 int depth;
926 u32 tmp;
927
928 /* check src dimensions */
929 if (IS_845G(dev) || IS_I830(dev)) {
930 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
931 rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
932 return -EINVAL;
933 } else {
934 if (rec->src_height > IMAGE_MAX_HEIGHT ||
935 rec->src_width > IMAGE_MAX_WIDTH)
936 return -EINVAL;
937 }
938
939 /* better safe than sorry, use 4 as the maximal subsampling ratio */
940 if (rec->src_height < N_VERT_Y_TAPS*4 ||
941 rec->src_width < N_HORIZ_Y_TAPS*4)
942 return -EINVAL;
943
944 /* check alignment constraints */
945 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
946 case I915_OVERLAY_RGB:
947 /* not implemented */
948 return -EINVAL;
949
950 case I915_OVERLAY_YUV_PACKED:
951 if (uv_vscale != 1)
952 return -EINVAL;
953
954 depth = packed_depth_bytes(rec->flags);
955 if (depth < 0)
956 return depth;
957
958 /* ignore UV planes */
959 rec->stride_UV = 0;
960 rec->offset_U = 0;
961 rec->offset_V = 0;
962 /* check pixel alignment */
963 if (rec->offset_Y % depth)
964 return -EINVAL;
965 break;
966
967 case I915_OVERLAY_YUV_PLANAR:
968 if (uv_vscale < 0 || uv_hscale < 0)
969 return -EINVAL;
970 /* no offset restrictions for planar formats */
971 break;
972
973 default:
974 return -EINVAL;
975 }
976
977 if (rec->src_width % uv_hscale)
978 return -EINVAL;
979
980 /* stride checking */
981 if (IS_I830(dev) || IS_845G(dev))
982 stride_mask = 255;
983 else
984 stride_mask = 63;
985
986 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
987 return -EINVAL;
988 if (IS_GEN4(dev) && rec->stride_Y < 512)
989 return -EINVAL;
990
991 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
992 4096 : 8192;
993 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
994 return -EINVAL;
995
996 /* check buffer dimensions */
997 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
998 case I915_OVERLAY_RGB:
999 case I915_OVERLAY_YUV_PACKED:
1000 /* always 4 Y values per depth pixels */
1001 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
1002 return -EINVAL;
1003
1004 tmp = rec->stride_Y*rec->src_height;
1005 if (rec->offset_Y + tmp > new_bo->base.size)
1006 return -EINVAL;
1007 break;
1008
1009 case I915_OVERLAY_YUV_PLANAR:
1010 if (rec->src_width > rec->stride_Y)
1011 return -EINVAL;
1012 if (rec->src_width/uv_hscale > rec->stride_UV)
1013 return -EINVAL;
1014
1015 tmp = rec->stride_Y * rec->src_height;
1016 if (rec->offset_Y + tmp > new_bo->base.size)
1017 return -EINVAL;
1018
1019 tmp = rec->stride_UV * (rec->src_height / uv_vscale);
1020 if (rec->offset_U + tmp > new_bo->base.size ||
1021 rec->offset_V + tmp > new_bo->base.size)
1022 return -EINVAL;
1023 break;
1024 }
1025
1026 return 0;
1027 }
1028
1029 /**
1030 * Return the pipe currently connected to the panel fitter,
1031 * or -1 if the panel fitter is not present or not in use
1032 */
1033 static int intel_panel_fitter_pipe(struct drm_device *dev)
1034 {
1035 struct drm_i915_private *dev_priv = dev->dev_private;
1036 u32 pfit_control;
1037
1038 /* i830 doesn't have a panel fitter */
1039 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
1040 return -1;
1041
1042 pfit_control = I915_READ(PFIT_CONTROL);
1043
1044 /* See if the panel fitter is in use */
1045 if ((pfit_control & PFIT_ENABLE) == 0)
1046 return -1;
1047
1048 /* 965 can place panel fitter on either pipe */
1049 if (IS_GEN4(dev))
1050 return (pfit_control >> 29) & 0x3;
1051
1052 /* older chips can only use pipe 1 */
1053 return 1;
1054 }
1055
1056 int intel_overlay_put_image(struct drm_device *dev, void *data,
1057 struct drm_file *file_priv)
1058 {
1059 struct drm_intel_overlay_put_image *put_image_rec = data;
1060 struct drm_i915_private *dev_priv = dev->dev_private;
1061 struct intel_overlay *overlay;
1062 struct drm_crtc *drmmode_crtc;
1063 struct intel_crtc *crtc;
1064 struct drm_i915_gem_object *new_bo;
1065 struct put_image_params *params;
1066 int ret;
1067
1068 /* No need to check for DRIVER_MODESET - we don't set it up then. */
1069 overlay = dev_priv->overlay;
1070 if (!overlay) {
1071 DRM_DEBUG("userspace bug: no overlay\n");
1072 return -ENODEV;
1073 }
1074
1075 if (!(put_image_rec->flags & I915_OVERLAY_ENABLE)) {
1076 drm_modeset_lock_all(dev);
1077 mutex_lock(&dev->struct_mutex);
1078
1079 ret = intel_overlay_switch_off(overlay);
1080
1081 mutex_unlock(&dev->struct_mutex);
1082 drm_modeset_unlock_all(dev);
1083
1084 return ret;
1085 }
1086
1087 params = kmalloc(sizeof(*params), GFP_KERNEL);
1088 if (!params)
1089 return -ENOMEM;
1090
1091 drmmode_crtc = drm_crtc_find(dev, put_image_rec->crtc_id);
1092 if (!drmmode_crtc) {
1093 ret = -ENOENT;
1094 goto out_free;
1095 }
1096 crtc = to_intel_crtc(drmmode_crtc);
1097
1098 new_bo = to_intel_bo(drm_gem_object_lookup(dev, file_priv,
1099 put_image_rec->bo_handle));
1100 if (&new_bo->base == NULL) {
1101 ret = -ENOENT;
1102 goto out_free;
1103 }
1104
1105 drm_modeset_lock_all(dev);
1106 mutex_lock(&dev->struct_mutex);
1107
1108 if (new_bo->tiling_mode) {
1109 DRM_DEBUG_KMS("buffer used for overlay image can not be tiled\n");
1110 ret = -EINVAL;
1111 goto out_unlock;
1112 }
1113
1114 ret = intel_overlay_recover_from_interrupt(overlay);
1115 if (ret != 0)
1116 goto out_unlock;
1117
1118 if (overlay->crtc != crtc) {
1119 struct drm_display_mode *mode = &crtc->base.mode;
1120 ret = intel_overlay_switch_off(overlay);
1121 if (ret != 0)
1122 goto out_unlock;
1123
1124 ret = check_overlay_possible_on_crtc(overlay, crtc);
1125 if (ret != 0)
1126 goto out_unlock;
1127
1128 overlay->crtc = crtc;
1129 crtc->overlay = overlay;
1130
1131 /* line too wide, i.e. one-line-mode */
1132 if (mode->hdisplay > 1024 &&
1133 intel_panel_fitter_pipe(dev) == crtc->pipe) {
1134 overlay->pfit_active = 1;
1135 update_pfit_vscale_ratio(overlay);
1136 } else
1137 overlay->pfit_active = 0;
1138 }
1139
1140 ret = check_overlay_dst(overlay, put_image_rec);
1141 if (ret != 0)
1142 goto out_unlock;
1143
1144 if (overlay->pfit_active) {
1145 params->dst_y = ((((u32)put_image_rec->dst_y) << 12) /
1146 overlay->pfit_vscale_ratio);
1147 /* shifting right rounds downwards, so add 1 */
1148 params->dst_h = ((((u32)put_image_rec->dst_height) << 12) /
1149 overlay->pfit_vscale_ratio) + 1;
1150 } else {
1151 params->dst_y = put_image_rec->dst_y;
1152 params->dst_h = put_image_rec->dst_height;
1153 }
1154 params->dst_x = put_image_rec->dst_x;
1155 params->dst_w = put_image_rec->dst_width;
1156
1157 params->src_w = put_image_rec->src_width;
1158 params->src_h = put_image_rec->src_height;
1159 params->src_scan_w = put_image_rec->src_scan_width;
1160 params->src_scan_h = put_image_rec->src_scan_height;
1161 if (params->src_scan_h > params->src_h ||
1162 params->src_scan_w > params->src_w) {
1163 ret = -EINVAL;
1164 goto out_unlock;
1165 }
1166
1167 ret = check_overlay_src(dev, put_image_rec, new_bo);
1168 if (ret != 0)
1169 goto out_unlock;
1170 params->format = put_image_rec->flags & ~I915_OVERLAY_FLAGS_MASK;
1171 params->stride_Y = put_image_rec->stride_Y;
1172 params->stride_UV = put_image_rec->stride_UV;
1173 params->offset_Y = put_image_rec->offset_Y;
1174 params->offset_U = put_image_rec->offset_U;
1175 params->offset_V = put_image_rec->offset_V;
1176
1177 /* Check scaling after src size to prevent a divide-by-zero. */
1178 ret = check_overlay_scaling(params);
1179 if (ret != 0)
1180 goto out_unlock;
1181
1182 ret = intel_overlay_do_put_image(overlay, new_bo, params);
1183 if (ret != 0)
1184 goto out_unlock;
1185
1186 mutex_unlock(&dev->struct_mutex);
1187 drm_modeset_unlock_all(dev);
1188
1189 kfree(params);
1190
1191 return 0;
1192
1193 out_unlock:
1194 mutex_unlock(&dev->struct_mutex);
1195 drm_modeset_unlock_all(dev);
1196 drm_gem_object_unreference_unlocked(&new_bo->base);
1197 out_free:
1198 kfree(params);
1199
1200 return ret;
1201 }
1202
1203 static void update_reg_attrs(struct intel_overlay *overlay,
1204 struct overlay_registers __iomem *regs)
1205 {
1206 iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff),
1207 &regs->OCLRC0);
1208 iowrite32(overlay->saturation, &regs->OCLRC1);
1209 }
1210
1211 static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
1212 {
1213 int i;
1214
1215 if (gamma1 & 0xff000000 || gamma2 & 0xff000000)
1216 return false;
1217
1218 for (i = 0; i < 3; i++) {
1219 if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
1220 return false;
1221 }
1222
1223 return true;
1224 }
1225
1226 static bool check_gamma5_errata(u32 gamma5)
1227 {
1228 int i;
1229
1230 for (i = 0; i < 3; i++) {
1231 if (((gamma5 >> i*8) & 0xff) == 0x80)
1232 return false;
1233 }
1234
1235 return true;
1236 }
1237
1238 static int check_gamma(struct drm_intel_overlay_attrs *attrs)
1239 {
1240 if (!check_gamma_bounds(0, attrs->gamma0) ||
1241 !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
1242 !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
1243 !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
1244 !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
1245 !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
1246 !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
1247 return -EINVAL;
1248
1249 if (!check_gamma5_errata(attrs->gamma5))
1250 return -EINVAL;
1251
1252 return 0;
1253 }
1254
1255 int intel_overlay_attrs(struct drm_device *dev, void *data,
1256 struct drm_file *file_priv)
1257 {
1258 struct drm_intel_overlay_attrs *attrs = data;
1259 struct drm_i915_private *dev_priv = dev->dev_private;
1260 struct intel_overlay *overlay;
1261 struct overlay_registers __iomem *regs;
1262 int ret;
1263
1264 /* No need to check for DRIVER_MODESET - we don't set it up then. */
1265 overlay = dev_priv->overlay;
1266 if (!overlay) {
1267 DRM_DEBUG("userspace bug: no overlay\n");
1268 return -ENODEV;
1269 }
1270
1271 drm_modeset_lock_all(dev);
1272 mutex_lock(&dev->struct_mutex);
1273
1274 ret = -EINVAL;
1275 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1276 attrs->color_key = overlay->color_key;
1277 attrs->brightness = overlay->brightness;
1278 attrs->contrast = overlay->contrast;
1279 attrs->saturation = overlay->saturation;
1280
1281 if (!IS_GEN2(dev)) {
1282 attrs->gamma0 = I915_READ(OGAMC0);
1283 attrs->gamma1 = I915_READ(OGAMC1);
1284 attrs->gamma2 = I915_READ(OGAMC2);
1285 attrs->gamma3 = I915_READ(OGAMC3);
1286 attrs->gamma4 = I915_READ(OGAMC4);
1287 attrs->gamma5 = I915_READ(OGAMC5);
1288 }
1289 } else {
1290 if (attrs->brightness < -128 || attrs->brightness > 127)
1291 goto out_unlock;
1292 if (attrs->contrast > 255)
1293 goto out_unlock;
1294 if (attrs->saturation > 1023)
1295 goto out_unlock;
1296
1297 overlay->color_key = attrs->color_key;
1298 overlay->brightness = attrs->brightness;
1299 overlay->contrast = attrs->contrast;
1300 overlay->saturation = attrs->saturation;
1301
1302 regs = intel_overlay_map_regs(overlay);
1303 if (!regs) {
1304 ret = -ENOMEM;
1305 goto out_unlock;
1306 }
1307
1308 update_reg_attrs(overlay, regs);
1309
1310 intel_overlay_unmap_regs(overlay, regs);
1311
1312 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1313 if (IS_GEN2(dev))
1314 goto out_unlock;
1315
1316 if (overlay->active) {
1317 ret = -EBUSY;
1318 goto out_unlock;
1319 }
1320
1321 ret = check_gamma(attrs);
1322 if (ret)
1323 goto out_unlock;
1324
1325 I915_WRITE(OGAMC0, attrs->gamma0);
1326 I915_WRITE(OGAMC1, attrs->gamma1);
1327 I915_WRITE(OGAMC2, attrs->gamma2);
1328 I915_WRITE(OGAMC3, attrs->gamma3);
1329 I915_WRITE(OGAMC4, attrs->gamma4);
1330 I915_WRITE(OGAMC5, attrs->gamma5);
1331 }
1332 }
1333
1334 ret = 0;
1335 out_unlock:
1336 mutex_unlock(&dev->struct_mutex);
1337 drm_modeset_unlock_all(dev);
1338
1339 return ret;
1340 }
1341
1342 void intel_setup_overlay(struct drm_device *dev)
1343 {
1344 struct drm_i915_private *dev_priv = dev->dev_private;
1345 struct intel_overlay *overlay;
1346 struct drm_i915_gem_object *reg_bo;
1347 struct overlay_registers __iomem *regs;
1348 int ret;
1349
1350 if (!HAS_OVERLAY(dev))
1351 return;
1352
1353 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
1354 if (!overlay)
1355 return;
1356
1357 mutex_lock(&dev->struct_mutex);
1358 if (WARN_ON(dev_priv->overlay))
1359 goto out_free;
1360
1361 overlay->dev = dev;
1362
1363 reg_bo = NULL;
1364 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1365 reg_bo = i915_gem_object_create_stolen(dev, PAGE_SIZE);
1366 if (reg_bo == NULL)
1367 reg_bo = i915_gem_alloc_object(dev, PAGE_SIZE);
1368 if (reg_bo == NULL)
1369 goto out_free;
1370 overlay->reg_bo = reg_bo;
1371
1372 if (OVERLAY_NEEDS_PHYSICAL(dev)) {
1373 ret = i915_gem_object_attach_phys(reg_bo, PAGE_SIZE);
1374 if (ret) {
1375 DRM_ERROR("failed to attach phys overlay regs\n");
1376 goto out_free_bo;
1377 }
1378 overlay->flip_addr = reg_bo->phys_handle->busaddr;
1379 } else {
1380 ret = i915_gem_obj_ggtt_pin(reg_bo, PAGE_SIZE, PIN_MAPPABLE);
1381 if (ret) {
1382 DRM_ERROR("failed to pin overlay register bo\n");
1383 goto out_free_bo;
1384 }
1385 overlay->flip_addr = i915_gem_obj_ggtt_offset(reg_bo);
1386
1387 ret = i915_gem_object_set_to_gtt_domain(reg_bo, true);
1388 if (ret) {
1389 DRM_ERROR("failed to move overlay register bo into the GTT\n");
1390 goto out_unpin_bo;
1391 }
1392 }
1393
1394 /* init all values */
1395 overlay->color_key = 0x0101fe;
1396 overlay->brightness = -19;
1397 overlay->contrast = 75;
1398 overlay->saturation = 146;
1399
1400 regs = intel_overlay_map_regs(overlay);
1401 if (!regs)
1402 goto out_unpin_bo;
1403
1404 memset_io(regs, 0, sizeof(struct overlay_registers));
1405 update_polyphase_filter(regs);
1406 update_reg_attrs(overlay, regs);
1407
1408 intel_overlay_unmap_regs(overlay, regs);
1409
1410 dev_priv->overlay = overlay;
1411 mutex_unlock(&dev->struct_mutex);
1412 DRM_INFO("initialized overlay support\n");
1413 return;
1414
1415 out_unpin_bo:
1416 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1417 i915_gem_object_ggtt_unpin(reg_bo);
1418 out_free_bo:
1419 drm_gem_object_unreference(&reg_bo->base);
1420 out_free:
1421 mutex_unlock(&dev->struct_mutex);
1422 kfree(overlay);
1423 return;
1424 }
1425
1426 void intel_cleanup_overlay(struct drm_device *dev)
1427 {
1428 struct drm_i915_private *dev_priv = dev->dev_private;
1429
1430 if (!dev_priv->overlay)
1431 return;
1432
1433 /* The bo's should be free'd by the generic code already.
1434 * Furthermore modesetting teardown happens beforehand so the
1435 * hardware should be off already */
1436 BUG_ON(dev_priv->overlay->active);
1437
1438 drm_gem_object_unreference_unlocked(&dev_priv->overlay->reg_bo->base);
1439 kfree(dev_priv->overlay);
1440 }
1441
1442 struct intel_overlay_error_state {
1443 struct overlay_registers regs;
1444 unsigned long base;
1445 u32 dovsta;
1446 u32 isr;
1447 };
1448
1449 static struct overlay_registers __iomem *
1450 intel_overlay_map_regs_atomic(struct intel_overlay *overlay)
1451 {
1452 struct drm_i915_private *dev_priv = overlay->dev->dev_private;
1453 struct overlay_registers __iomem *regs;
1454
1455 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1456 /* Cast to make sparse happy, but it's wc memory anyway, so
1457 * equivalent to the wc io mapping on X86. */
1458 regs = (struct overlay_registers __iomem *)
1459 overlay->reg_bo->phys_handle->vaddr;
1460 else
1461 regs = io_mapping_map_atomic_wc(dev_priv->gtt.mappable,
1462 i915_gem_obj_ggtt_offset(overlay->reg_bo));
1463
1464 return regs;
1465 }
1466
1467 static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay,
1468 struct overlay_registers __iomem *regs)
1469 {
1470 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1471 io_mapping_unmap_atomic(regs);
1472 }
1473
1474
1475 struct intel_overlay_error_state *
1476 intel_overlay_capture_error_state(struct drm_device *dev)
1477 {
1478 struct drm_i915_private *dev_priv = dev->dev_private;
1479 struct intel_overlay *overlay = dev_priv->overlay;
1480 struct intel_overlay_error_state *error;
1481 struct overlay_registers __iomem *regs;
1482
1483 if (!overlay || !overlay->active)
1484 return NULL;
1485
1486 error = kmalloc(sizeof(*error), GFP_ATOMIC);
1487 if (error == NULL)
1488 return NULL;
1489
1490 error->dovsta = I915_READ(DOVSTA);
1491 error->isr = I915_READ(ISR);
1492 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1493 error->base = (__force long)overlay->reg_bo->phys_handle->vaddr;
1494 else
1495 error->base = i915_gem_obj_ggtt_offset(overlay->reg_bo);
1496
1497 regs = intel_overlay_map_regs_atomic(overlay);
1498 if (!regs)
1499 goto err;
1500
1501 memcpy_fromio(&error->regs, regs, sizeof(struct overlay_registers));
1502 intel_overlay_unmap_regs_atomic(overlay, regs);
1503
1504 return error;
1505
1506 err:
1507 kfree(error);
1508 return NULL;
1509 }
1510
1511 void
1512 intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
1513 struct intel_overlay_error_state *error)
1514 {
1515 i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
1516 error->dovsta, error->isr);
1517 i915_error_printf(m, " Register file at 0x%08lx:\n",
1518 error->base);
1519
1520 #define P(x) i915_error_printf(m, " " #x ": 0x%08x\n", error->regs.x)
1521 P(OBUF_0Y);
1522 P(OBUF_1Y);
1523 P(OBUF_0U);
1524 P(OBUF_0V);
1525 P(OBUF_1U);
1526 P(OBUF_1V);
1527 P(OSTRIDE);
1528 P(YRGB_VPH);
1529 P(UV_VPH);
1530 P(HORZ_PH);
1531 P(INIT_PHS);
1532 P(DWINPOS);
1533 P(DWINSZ);
1534 P(SWIDTH);
1535 P(SWIDTHSW);
1536 P(SHEIGHT);
1537 P(YRGBSCALE);
1538 P(UVSCALE);
1539 P(OCLRC0);
1540 P(OCLRC1);
1541 P(DCLRKV);
1542 P(DCLRKM);
1543 P(SCLRKVH);
1544 P(SCLRKVL);
1545 P(SCLRKEN);
1546 P(OCONFIG);
1547 P(OCMD);
1548 P(OSTART_0Y);
1549 P(OSTART_1Y);
1550 P(OSTART_0U);
1551 P(OSTART_0V);
1552 P(OSTART_1U);
1553 P(OSTART_1V);
1554 P(OTILEOFF_0Y);
1555 P(OTILEOFF_1Y);
1556 P(OTILEOFF_0U);
1557 P(OTILEOFF_0V);
1558 P(OTILEOFF_1U);
1559 P(OTILEOFF_1V);
1560 P(FASTHSCALE);
1561 P(UVSCALEV);
1562 #undef P
1563 }
Linux kernel - Deliverables
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