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mm: hugetlb: fix hugepage memory leak caused by wrong reserve count
[linux/fpc-iii.git] / drivers / gpu / drm / i915 / intel_overlay.c
blob444542696a2c19a18b6ffbe48d1cf2933b3d2ab6
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 bool active;
176 bool pfit_active;
177 u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
178 u32 color_key:24;
179 u32 color_key_enabled:1;
180 u32 brightness, contrast, saturation;
181 u32 old_xscale, old_yscale;
182 /* register access */
183 u32 flip_addr;
184 struct drm_i915_gem_object *reg_bo;
185 /* flip handling */
186 struct drm_i915_gem_request *last_flip_req;
187 void (*flip_tail)(struct intel_overlay *);
188 };
189
190 static struct overlay_registers __iomem *
191 intel_overlay_map_regs(struct intel_overlay *overlay)
192 {
193 struct drm_i915_private *dev_priv = overlay->dev->dev_private;
194 struct overlay_registers __iomem *regs;
195
196 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
197 regs = (struct overlay_registers __iomem *)overlay->reg_bo->phys_handle->vaddr;
198 else
199 regs = io_mapping_map_wc(dev_priv->gtt.mappable,
200 i915_gem_obj_ggtt_offset(overlay->reg_bo));
201
202 return regs;
203 }
204
205 static void intel_overlay_unmap_regs(struct intel_overlay *overlay,
206 struct overlay_registers __iomem *regs)
207 {
208 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
209 io_mapping_unmap(regs);
210 }
211
212 static int intel_overlay_do_wait_request(struct intel_overlay *overlay,
213 struct drm_i915_gem_request *req,
214 void (*tail)(struct intel_overlay *))
215 {
216 int ret;
217
218 WARN_ON(overlay->last_flip_req);
219 i915_gem_request_assign(&overlay->last_flip_req, req);
220 i915_add_request(req);
221
222 overlay->flip_tail = tail;
223 ret = i915_wait_request(overlay->last_flip_req);
224 if (ret)
225 return ret;
226
227 i915_gem_request_assign(&overlay->last_flip_req, NULL);
228 return 0;
229 }
230
231 /* overlay needs to be disable in OCMD reg */
232 static int intel_overlay_on(struct intel_overlay *overlay)
233 {
234 struct drm_device *dev = overlay->dev;
235 struct drm_i915_private *dev_priv = dev->dev_private;
236 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
237 struct drm_i915_gem_request *req;
238 int ret;
239
240 WARN_ON(overlay->active);
241 WARN_ON(IS_I830(dev) && !(dev_priv->quirks & QUIRK_PIPEA_FORCE));
242
243 ret = i915_gem_request_alloc(ring, ring->default_context, &req);
244 if (ret)
245 return ret;
246
247 ret = intel_ring_begin(req, 4);
248 if (ret) {
249 i915_gem_request_cancel(req);
250 return ret;
251 }
252
253 overlay->active = true;
254
255 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_ON);
256 intel_ring_emit(ring, overlay->flip_addr | OFC_UPDATE);
257 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
258 intel_ring_emit(ring, MI_NOOP);
259 intel_ring_advance(ring);
260
261 return intel_overlay_do_wait_request(overlay, req, NULL);
262 }
263
264 /* overlay needs to be enabled in OCMD reg */
265 static int intel_overlay_continue(struct intel_overlay *overlay,
266 bool load_polyphase_filter)
267 {
268 struct drm_device *dev = overlay->dev;
269 struct drm_i915_private *dev_priv = dev->dev_private;
270 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
271 struct drm_i915_gem_request *req;
272 u32 flip_addr = overlay->flip_addr;
273 u32 tmp;
274 int ret;
275
276 WARN_ON(!overlay->active);
277
278 if (load_polyphase_filter)
279 flip_addr |= OFC_UPDATE;
280
281 /* check for underruns */
282 tmp = I915_READ(DOVSTA);
283 if (tmp & (1 << 17))
284 DRM_DEBUG("overlay underrun, DOVSTA: %x\n", tmp);
285
286 ret = i915_gem_request_alloc(ring, ring->default_context, &req);
287 if (ret)
288 return ret;
289
290 ret = intel_ring_begin(req, 2);
291 if (ret) {
292 i915_gem_request_cancel(req);
293 return ret;
294 }
295
296 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
297 intel_ring_emit(ring, flip_addr);
298 intel_ring_advance(ring);
299
300 WARN_ON(overlay->last_flip_req);
301 i915_gem_request_assign(&overlay->last_flip_req, req);
302 i915_add_request(req);
303
304 return 0;
305 }
306
307 static void intel_overlay_release_old_vid_tail(struct intel_overlay *overlay)
308 {
309 struct drm_i915_gem_object *obj = overlay->old_vid_bo;
310
311 i915_gem_object_ggtt_unpin(obj);
312 drm_gem_object_unreference(&obj->base);
313
314 overlay->old_vid_bo = NULL;
315 }
316
317 static void intel_overlay_off_tail(struct intel_overlay *overlay)
318 {
319 struct drm_i915_gem_object *obj = overlay->vid_bo;
320
321 /* never have the overlay hw on without showing a frame */
322 if (WARN_ON(!obj))
323 return;
324
325 i915_gem_object_ggtt_unpin(obj);
326 drm_gem_object_unreference(&obj->base);
327 overlay->vid_bo = NULL;
328
329 overlay->crtc->overlay = NULL;
330 overlay->crtc = NULL;
331 overlay->active = false;
332 }
333
334 /* overlay needs to be disabled in OCMD reg */
335 static int intel_overlay_off(struct intel_overlay *overlay)
336 {
337 struct drm_device *dev = overlay->dev;
338 struct drm_i915_private *dev_priv = dev->dev_private;
339 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
340 struct drm_i915_gem_request *req;
341 u32 flip_addr = overlay->flip_addr;
342 int ret;
343
344 WARN_ON(!overlay->active);
345
346 /* According to intel docs the overlay hw may hang (when switching
347 * off) without loading the filter coeffs. It is however unclear whether
348 * this applies to the disabling of the overlay or to the switching off
349 * of the hw. Do it in both cases */
350 flip_addr |= OFC_UPDATE;
351
352 ret = i915_gem_request_alloc(ring, ring->default_context, &req);
353 if (ret)
354 return ret;
355
356 ret = intel_ring_begin(req, 6);
357 if (ret) {
358 i915_gem_request_cancel(req);
359 return ret;
360 }
361
362 /* wait for overlay to go idle */
363 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
364 intel_ring_emit(ring, flip_addr);
365 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
366 /* turn overlay off */
367 if (IS_I830(dev)) {
368 /* Workaround: Don't disable the overlay fully, since otherwise
369 * it dies on the next OVERLAY_ON cmd. */
370 intel_ring_emit(ring, MI_NOOP);
371 intel_ring_emit(ring, MI_NOOP);
372 intel_ring_emit(ring, MI_NOOP);
373 } else {
374 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
375 intel_ring_emit(ring, flip_addr);
376 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
377 }
378 intel_ring_advance(ring);
379
380 return intel_overlay_do_wait_request(overlay, req, intel_overlay_off_tail);
381 }
382
383 /* recover from an interruption due to a signal
384 * We have to be careful not to repeat work forever an make forward progess. */
385 static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay)
386 {
387 int ret;
388
389 if (overlay->last_flip_req == NULL)
390 return 0;
391
392 ret = i915_wait_request(overlay->last_flip_req);
393 if (ret)
394 return ret;
395
396 if (overlay->flip_tail)
397 overlay->flip_tail(overlay);
398
399 i915_gem_request_assign(&overlay->last_flip_req, NULL);
400 return 0;
401 }
402
403 /* Wait for pending overlay flip and release old frame.
404 * Needs to be called before the overlay register are changed
405 * via intel_overlay_(un)map_regs
406 */
407 static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
408 {
409 struct drm_device *dev = overlay->dev;
410 struct drm_i915_private *dev_priv = dev->dev_private;
411 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
412 int ret;
413
414 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
415
416 /* Only wait if there is actually an old frame to release to
417 * guarantee forward progress.
418 */
419 if (!overlay->old_vid_bo)
420 return 0;
421
422 if (I915_READ(ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT) {
423 /* synchronous slowpath */
424 struct drm_i915_gem_request *req;
425
426 ret = i915_gem_request_alloc(ring, ring->default_context, &req);
427 if (ret)
428 return ret;
429
430 ret = intel_ring_begin(req, 2);
431 if (ret) {
432 i915_gem_request_cancel(req);
433 return ret;
434 }
435
436 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
437 intel_ring_emit(ring, MI_NOOP);
438 intel_ring_advance(ring);
439
440 ret = intel_overlay_do_wait_request(overlay, req,
441 intel_overlay_release_old_vid_tail);
442 if (ret)
443 return ret;
444 }
445
446 intel_overlay_release_old_vid_tail(overlay);
447
448
449 i915_gem_track_fb(overlay->old_vid_bo, NULL,
450 INTEL_FRONTBUFFER_OVERLAY(overlay->crtc->pipe));
451 return 0;
452 }
453
454 void intel_overlay_reset(struct drm_i915_private *dev_priv)
455 {
456 struct intel_overlay *overlay = dev_priv->overlay;
457
458 if (!overlay)
459 return;
460
461 intel_overlay_release_old_vid(overlay);
462
463 overlay->last_flip_req = NULL;
464 overlay->old_xscale = 0;
465 overlay->old_yscale = 0;
466 overlay->crtc = NULL;
467 overlay->active = false;
468 }
469
470 struct put_image_params {
471 int format;
472 short dst_x;
473 short dst_y;
474 short dst_w;
475 short dst_h;
476 short src_w;
477 short src_scan_h;
478 short src_scan_w;
479 short src_h;
480 short stride_Y;
481 short stride_UV;
482 int offset_Y;
483 int offset_U;
484 int offset_V;
485 };
486
487 static int packed_depth_bytes(u32 format)
488 {
489 switch (format & I915_OVERLAY_DEPTH_MASK) {
490 case I915_OVERLAY_YUV422:
491 return 4;
492 case I915_OVERLAY_YUV411:
493 /* return 6; not implemented */
494 default:
495 return -EINVAL;
496 }
497 }
498
499 static int packed_width_bytes(u32 format, short width)
500 {
501 switch (format & I915_OVERLAY_DEPTH_MASK) {
502 case I915_OVERLAY_YUV422:
503 return width << 1;
504 default:
505 return -EINVAL;
506 }
507 }
508
509 static int uv_hsubsampling(u32 format)
510 {
511 switch (format & I915_OVERLAY_DEPTH_MASK) {
512 case I915_OVERLAY_YUV422:
513 case I915_OVERLAY_YUV420:
514 return 2;
515 case I915_OVERLAY_YUV411:
516 case I915_OVERLAY_YUV410:
517 return 4;
518 default:
519 return -EINVAL;
520 }
521 }
522
523 static int uv_vsubsampling(u32 format)
524 {
525 switch (format & I915_OVERLAY_DEPTH_MASK) {
526 case I915_OVERLAY_YUV420:
527 case I915_OVERLAY_YUV410:
528 return 2;
529 case I915_OVERLAY_YUV422:
530 case I915_OVERLAY_YUV411:
531 return 1;
532 default:
533 return -EINVAL;
534 }
535 }
536
537 static u32 calc_swidthsw(struct drm_device *dev, u32 offset, u32 width)
538 {
539 u32 mask, shift, ret;
540 if (IS_GEN2(dev)) {
541 mask = 0x1f;
542 shift = 5;
543 } else {
544 mask = 0x3f;
545 shift = 6;
546 }
547 ret = ((offset + width + mask) >> shift) - (offset >> shift);
548 if (!IS_GEN2(dev))
549 ret <<= 1;
550 ret -= 1;
551 return ret << 2;
552 }
553
554 static const u16 y_static_hcoeffs[N_HORIZ_Y_TAPS * N_PHASES] = {
555 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0,
556 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440,
557 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0,
558 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380,
559 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320,
560 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0,
561 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260,
562 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200,
563 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0,
564 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160,
565 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120,
566 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0,
567 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0,
568 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060,
569 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040,
570 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020,
571 0xb000, 0x3000, 0x0800, 0x3000, 0xb000
572 };
573
574 static const u16 uv_static_hcoeffs[N_HORIZ_UV_TAPS * N_PHASES] = {
575 0x3000, 0x1800, 0x1800, 0xb000, 0x18d0, 0x2e60,
576 0xb000, 0x1990, 0x2ce0, 0xb020, 0x1a68, 0x2b40,
577 0xb040, 0x1b20, 0x29e0, 0xb060, 0x1bd8, 0x2880,
578 0xb080, 0x1c88, 0x3e60, 0xb0a0, 0x1d28, 0x3c00,
579 0xb0c0, 0x1db8, 0x39e0, 0xb0e0, 0x1e40, 0x37e0,
580 0xb100, 0x1eb8, 0x3620, 0xb100, 0x1f18, 0x34a0,
581 0xb100, 0x1f68, 0x3360, 0xb0e0, 0x1fa8, 0x3240,
582 0xb0c0, 0x1fe0, 0x3140, 0xb060, 0x1ff0, 0x30a0,
583 0x3000, 0x0800, 0x3000
584 };
585
586 static void update_polyphase_filter(struct overlay_registers __iomem *regs)
587 {
588 memcpy_toio(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs));
589 memcpy_toio(regs->UV_HCOEFS, uv_static_hcoeffs,
590 sizeof(uv_static_hcoeffs));
591 }
592
593 static bool update_scaling_factors(struct intel_overlay *overlay,
594 struct overlay_registers __iomem *regs,
595 struct put_image_params *params)
596 {
597 /* fixed point with a 12 bit shift */
598 u32 xscale, yscale, xscale_UV, yscale_UV;
599 #define FP_SHIFT 12
600 #define FRACT_MASK 0xfff
601 bool scale_changed = false;
602 int uv_hscale = uv_hsubsampling(params->format);
603 int uv_vscale = uv_vsubsampling(params->format);
604
605 if (params->dst_w > 1)
606 xscale = ((params->src_scan_w - 1) << FP_SHIFT)
607 /(params->dst_w);
608 else
609 xscale = 1 << FP_SHIFT;
610
611 if (params->dst_h > 1)
612 yscale = ((params->src_scan_h - 1) << FP_SHIFT)
613 /(params->dst_h);
614 else
615 yscale = 1 << FP_SHIFT;
616
617 /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/
618 xscale_UV = xscale/uv_hscale;
619 yscale_UV = yscale/uv_vscale;
620 /* make the Y scale to UV scale ratio an exact multiply */
621 xscale = xscale_UV * uv_hscale;
622 yscale = yscale_UV * uv_vscale;
623 /*} else {
624 xscale_UV = 0;
625 yscale_UV = 0;
626 }*/
627
628 if (xscale != overlay->old_xscale || yscale != overlay->old_yscale)
629 scale_changed = true;
630 overlay->old_xscale = xscale;
631 overlay->old_yscale = yscale;
632
633 iowrite32(((yscale & FRACT_MASK) << 20) |
634 ((xscale >> FP_SHIFT) << 16) |
635 ((xscale & FRACT_MASK) << 3),
636 &regs->YRGBSCALE);
637
638 iowrite32(((yscale_UV & FRACT_MASK) << 20) |
639 ((xscale_UV >> FP_SHIFT) << 16) |
640 ((xscale_UV & FRACT_MASK) << 3),
641 &regs->UVSCALE);
642
643 iowrite32((((yscale >> FP_SHIFT) << 16) |
644 ((yscale_UV >> FP_SHIFT) << 0)),
645 &regs->UVSCALEV);
646
647 if (scale_changed)
648 update_polyphase_filter(regs);
649
650 return scale_changed;
651 }
652
653 static void update_colorkey(struct intel_overlay *overlay,
654 struct overlay_registers __iomem *regs)
655 {
656 u32 key = overlay->color_key;
657 u32 flags;
658
659 flags = 0;
660 if (overlay->color_key_enabled)
661 flags |= DST_KEY_ENABLE;
662
663 switch (overlay->crtc->base.primary->fb->bits_per_pixel) {
664 case 8:
665 key = 0;
666 flags |= CLK_RGB8I_MASK;
667 break;
668
669 case 16:
670 if (overlay->crtc->base.primary->fb->depth == 15) {
671 key = RGB15_TO_COLORKEY(key);
672 flags |= CLK_RGB15_MASK;
673 } else {
674 key = RGB16_TO_COLORKEY(key);
675 flags |= CLK_RGB16_MASK;
676 }
677 break;
678
679 case 24:
680 case 32:
681 flags |= CLK_RGB24_MASK;
682 break;
683 }
684
685 iowrite32(key, &regs->DCLRKV);
686 iowrite32(flags, &regs->DCLRKM);
687 }
688
689 static u32 overlay_cmd_reg(struct put_image_params *params)
690 {
691 u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0;
692
693 if (params->format & I915_OVERLAY_YUV_PLANAR) {
694 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
695 case I915_OVERLAY_YUV422:
696 cmd |= OCMD_YUV_422_PLANAR;
697 break;
698 case I915_OVERLAY_YUV420:
699 cmd |= OCMD_YUV_420_PLANAR;
700 break;
701 case I915_OVERLAY_YUV411:
702 case I915_OVERLAY_YUV410:
703 cmd |= OCMD_YUV_410_PLANAR;
704 break;
705 }
706 } else { /* YUV packed */
707 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
708 case I915_OVERLAY_YUV422:
709 cmd |= OCMD_YUV_422_PACKED;
710 break;
711 case I915_OVERLAY_YUV411:
712 cmd |= OCMD_YUV_411_PACKED;
713 break;
714 }
715
716 switch (params->format & I915_OVERLAY_SWAP_MASK) {
717 case I915_OVERLAY_NO_SWAP:
718 break;
719 case I915_OVERLAY_UV_SWAP:
720 cmd |= OCMD_UV_SWAP;
721 break;
722 case I915_OVERLAY_Y_SWAP:
723 cmd |= OCMD_Y_SWAP;
724 break;
725 case I915_OVERLAY_Y_AND_UV_SWAP:
726 cmd |= OCMD_Y_AND_UV_SWAP;
727 break;
728 }
729 }
730
731 return cmd;
732 }
733
734 static int intel_overlay_do_put_image(struct intel_overlay *overlay,
735 struct drm_i915_gem_object *new_bo,
736 struct put_image_params *params)
737 {
738 int ret, tmp_width;
739 struct overlay_registers __iomem *regs;
740 bool scale_changed = false;
741 struct drm_device *dev = overlay->dev;
742 u32 swidth, swidthsw, sheight, ostride;
743 enum pipe pipe = overlay->crtc->pipe;
744
745 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
746 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
747
748 ret = intel_overlay_release_old_vid(overlay);
749 if (ret != 0)
750 return ret;
751
752 ret = i915_gem_object_pin_to_display_plane(new_bo, 0, NULL, NULL,
753 &i915_ggtt_view_normal);
754 if (ret != 0)
755 return ret;
756
757 ret = i915_gem_object_put_fence(new_bo);
758 if (ret)
759 goto out_unpin;
760
761 if (!overlay->active) {
762 u32 oconfig;
763 regs = intel_overlay_map_regs(overlay);
764 if (!regs) {
765 ret = -ENOMEM;
766 goto out_unpin;
767 }
768 oconfig = OCONF_CC_OUT_8BIT;
769 if (IS_GEN4(overlay->dev))
770 oconfig |= OCONF_CSC_MODE_BT709;
771 oconfig |= pipe == 0 ?
772 OCONF_PIPE_A : OCONF_PIPE_B;
773 iowrite32(oconfig, &regs->OCONFIG);
774 intel_overlay_unmap_regs(overlay, regs);
775
776 ret = intel_overlay_on(overlay);
777 if (ret != 0)
778 goto out_unpin;
779 }
780
781 regs = intel_overlay_map_regs(overlay);
782 if (!regs) {
783 ret = -ENOMEM;
784 goto out_unpin;
785 }
786
787 iowrite32((params->dst_y << 16) | params->dst_x, &regs->DWINPOS);
788 iowrite32((params->dst_h << 16) | params->dst_w, &regs->DWINSZ);
789
790 if (params->format & I915_OVERLAY_YUV_PACKED)
791 tmp_width = packed_width_bytes(params->format, params->src_w);
792 else
793 tmp_width = params->src_w;
794
795 swidth = params->src_w;
796 swidthsw = calc_swidthsw(overlay->dev, params->offset_Y, tmp_width);
797 sheight = params->src_h;
798 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_Y, &regs->OBUF_0Y);
799 ostride = params->stride_Y;
800
801 if (params->format & I915_OVERLAY_YUV_PLANAR) {
802 int uv_hscale = uv_hsubsampling(params->format);
803 int uv_vscale = uv_vsubsampling(params->format);
804 u32 tmp_U, tmp_V;
805 swidth |= (params->src_w/uv_hscale) << 16;
806 tmp_U = calc_swidthsw(overlay->dev, params->offset_U,
807 params->src_w/uv_hscale);
808 tmp_V = calc_swidthsw(overlay->dev, params->offset_V,
809 params->src_w/uv_hscale);
810 swidthsw |= max_t(u32, tmp_U, tmp_V) << 16;
811 sheight |= (params->src_h/uv_vscale) << 16;
812 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_U, &regs->OBUF_0U);
813 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_V, &regs->OBUF_0V);
814 ostride |= params->stride_UV << 16;
815 }
816
817 iowrite32(swidth, &regs->SWIDTH);
818 iowrite32(swidthsw, &regs->SWIDTHSW);
819 iowrite32(sheight, &regs->SHEIGHT);
820 iowrite32(ostride, &regs->OSTRIDE);
821
822 scale_changed = update_scaling_factors(overlay, regs, params);
823
824 update_colorkey(overlay, regs);
825
826 iowrite32(overlay_cmd_reg(params), &regs->OCMD);
827
828 intel_overlay_unmap_regs(overlay, regs);
829
830 ret = intel_overlay_continue(overlay, scale_changed);
831 if (ret)
832 goto out_unpin;
833
834 i915_gem_track_fb(overlay->vid_bo, new_bo,
835 INTEL_FRONTBUFFER_OVERLAY(pipe));
836
837 overlay->old_vid_bo = overlay->vid_bo;
838 overlay->vid_bo = new_bo;
839
840 intel_frontbuffer_flip(dev,
841 INTEL_FRONTBUFFER_OVERLAY(pipe));
842
843 return 0;
844
845 out_unpin:
846 i915_gem_object_ggtt_unpin(new_bo);
847 return ret;
848 }
849
850 int intel_overlay_switch_off(struct intel_overlay *overlay)
851 {
852 struct overlay_registers __iomem *regs;
853 struct drm_device *dev = overlay->dev;
854 int ret;
855
856 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
857 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
858
859 ret = intel_overlay_recover_from_interrupt(overlay);
860 if (ret != 0)
861 return ret;
862
863 if (!overlay->active)
864 return 0;
865
866 ret = intel_overlay_release_old_vid(overlay);
867 if (ret != 0)
868 return ret;
869
870 regs = intel_overlay_map_regs(overlay);
871 iowrite32(0, &regs->OCMD);
872 intel_overlay_unmap_regs(overlay, regs);
873
874 ret = intel_overlay_off(overlay);
875 if (ret != 0)
876 return ret;
877
878 intel_overlay_off_tail(overlay);
879 return 0;
880 }
881
882 static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
883 struct intel_crtc *crtc)
884 {
885 if (!crtc->active)
886 return -EINVAL;
887
888 /* can't use the overlay with double wide pipe */
889 if (crtc->config->double_wide)
890 return -EINVAL;
891
892 return 0;
893 }
894
895 static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
896 {
897 struct drm_device *dev = overlay->dev;
898 struct drm_i915_private *dev_priv = dev->dev_private;
899 u32 pfit_control = I915_READ(PFIT_CONTROL);
900 u32 ratio;
901
902 /* XXX: This is not the same logic as in the xorg driver, but more in
903 * line with the intel documentation for the i965
904 */
905 if (INTEL_INFO(dev)->gen >= 4) {
906 /* on i965 use the PGM reg to read out the autoscaler values */
907 ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
908 } else {
909 if (pfit_control & VERT_AUTO_SCALE)
910 ratio = I915_READ(PFIT_AUTO_RATIOS);
911 else
912 ratio = I915_READ(PFIT_PGM_RATIOS);
913 ratio >>= PFIT_VERT_SCALE_SHIFT;
914 }
915
916 overlay->pfit_vscale_ratio = ratio;
917 }
918
919 static int check_overlay_dst(struct intel_overlay *overlay,
920 struct drm_intel_overlay_put_image *rec)
921 {
922 struct drm_display_mode *mode = &overlay->crtc->base.mode;
923
924 if (rec->dst_x < mode->hdisplay &&
925 rec->dst_x + rec->dst_width <= mode->hdisplay &&
926 rec->dst_y < mode->vdisplay &&
927 rec->dst_y + rec->dst_height <= mode->vdisplay)
928 return 0;
929 else
930 return -EINVAL;
931 }
932
933 static int check_overlay_scaling(struct put_image_params *rec)
934 {
935 u32 tmp;
936
937 /* downscaling limit is 8.0 */
938 tmp = ((rec->src_scan_h << 16) / rec->dst_h) >> 16;
939 if (tmp > 7)
940 return -EINVAL;
941 tmp = ((rec->src_scan_w << 16) / rec->dst_w) >> 16;
942 if (tmp > 7)
943 return -EINVAL;
944
945 return 0;
946 }
947
948 static int check_overlay_src(struct drm_device *dev,
949 struct drm_intel_overlay_put_image *rec,
950 struct drm_i915_gem_object *new_bo)
951 {
952 int uv_hscale = uv_hsubsampling(rec->flags);
953 int uv_vscale = uv_vsubsampling(rec->flags);
954 u32 stride_mask;
955 int depth;
956 u32 tmp;
957
958 /* check src dimensions */
959 if (IS_845G(dev) || IS_I830(dev)) {
960 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
961 rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
962 return -EINVAL;
963 } else {
964 if (rec->src_height > IMAGE_MAX_HEIGHT ||
965 rec->src_width > IMAGE_MAX_WIDTH)
966 return -EINVAL;
967 }
968
969 /* better safe than sorry, use 4 as the maximal subsampling ratio */
970 if (rec->src_height < N_VERT_Y_TAPS*4 ||
971 rec->src_width < N_HORIZ_Y_TAPS*4)
972 return -EINVAL;
973
974 /* check alignment constraints */
975 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
976 case I915_OVERLAY_RGB:
977 /* not implemented */
978 return -EINVAL;
979
980 case I915_OVERLAY_YUV_PACKED:
981 if (uv_vscale != 1)
982 return -EINVAL;
983
984 depth = packed_depth_bytes(rec->flags);
985 if (depth < 0)
986 return depth;
987
988 /* ignore UV planes */
989 rec->stride_UV = 0;
990 rec->offset_U = 0;
991 rec->offset_V = 0;
992 /* check pixel alignment */
993 if (rec->offset_Y % depth)
994 return -EINVAL;
995 break;
996
997 case I915_OVERLAY_YUV_PLANAR:
998 if (uv_vscale < 0 || uv_hscale < 0)
999 return -EINVAL;
1000 /* no offset restrictions for planar formats */
1001 break;
1002
1003 default:
1004 return -EINVAL;
1005 }
1006
1007 if (rec->src_width % uv_hscale)
1008 return -EINVAL;
1009
1010 /* stride checking */
1011 if (IS_I830(dev) || IS_845G(dev))
1012 stride_mask = 255;
1013 else
1014 stride_mask = 63;
1015
1016 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
1017 return -EINVAL;
1018 if (IS_GEN4(dev) && rec->stride_Y < 512)
1019 return -EINVAL;
1020
1021 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
1022 4096 : 8192;
1023 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
1024 return -EINVAL;
1025
1026 /* check buffer dimensions */
1027 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
1028 case I915_OVERLAY_RGB:
1029 case I915_OVERLAY_YUV_PACKED:
1030 /* always 4 Y values per depth pixels */
1031 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
1032 return -EINVAL;
1033
1034 tmp = rec->stride_Y*rec->src_height;
1035 if (rec->offset_Y + tmp > new_bo->base.size)
1036 return -EINVAL;
1037 break;
1038
1039 case I915_OVERLAY_YUV_PLANAR:
1040 if (rec->src_width > rec->stride_Y)
1041 return -EINVAL;
1042 if (rec->src_width/uv_hscale > rec->stride_UV)
1043 return -EINVAL;
1044
1045 tmp = rec->stride_Y * rec->src_height;
1046 if (rec->offset_Y + tmp > new_bo->base.size)
1047 return -EINVAL;
1048
1049 tmp = rec->stride_UV * (rec->src_height / uv_vscale);
1050 if (rec->offset_U + tmp > new_bo->base.size ||
1051 rec->offset_V + tmp > new_bo->base.size)
1052 return -EINVAL;
1053 break;
1054 }
1055
1056 return 0;
1057 }
1058
1059 /**
1060 * Return the pipe currently connected to the panel fitter,
1061 * or -1 if the panel fitter is not present or not in use
1062 */
1063 static int intel_panel_fitter_pipe(struct drm_device *dev)
1064 {
1065 struct drm_i915_private *dev_priv = dev->dev_private;
1066 u32 pfit_control;
1067
1068 /* i830 doesn't have a panel fitter */
1069 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
1070 return -1;
1071
1072 pfit_control = I915_READ(PFIT_CONTROL);
1073
1074 /* See if the panel fitter is in use */
1075 if ((pfit_control & PFIT_ENABLE) == 0)
1076 return -1;
1077
1078 /* 965 can place panel fitter on either pipe */
1079 if (IS_GEN4(dev))
1080 return (pfit_control >> 29) & 0x3;
1081
1082 /* older chips can only use pipe 1 */
1083 return 1;
1084 }
1085
1086 int intel_overlay_put_image(struct drm_device *dev, void *data,
1087 struct drm_file *file_priv)
1088 {
1089 struct drm_intel_overlay_put_image *put_image_rec = data;
1090 struct drm_i915_private *dev_priv = dev->dev_private;
1091 struct intel_overlay *overlay;
1092 struct drm_crtc *drmmode_crtc;
1093 struct intel_crtc *crtc;
1094 struct drm_i915_gem_object *new_bo;
1095 struct put_image_params *params;
1096 int ret;
1097
1098 overlay = dev_priv->overlay;
1099 if (!overlay) {
1100 DRM_DEBUG("userspace bug: no overlay\n");
1101 return -ENODEV;
1102 }
1103
1104 if (!(put_image_rec->flags & I915_OVERLAY_ENABLE)) {
1105 drm_modeset_lock_all(dev);
1106 mutex_lock(&dev->struct_mutex);
1107
1108 ret = intel_overlay_switch_off(overlay);
1109
1110 mutex_unlock(&dev->struct_mutex);
1111 drm_modeset_unlock_all(dev);
1112
1113 return ret;
1114 }
1115
1116 params = kmalloc(sizeof(*params), GFP_KERNEL);
1117 if (!params)
1118 return -ENOMEM;
1119
1120 drmmode_crtc = drm_crtc_find(dev, put_image_rec->crtc_id);
1121 if (!drmmode_crtc) {
1122 ret = -ENOENT;
1123 goto out_free;
1124 }
1125 crtc = to_intel_crtc(drmmode_crtc);
1126
1127 new_bo = to_intel_bo(drm_gem_object_lookup(dev, file_priv,
1128 put_image_rec->bo_handle));
1129 if (&new_bo->base == NULL) {
1130 ret = -ENOENT;
1131 goto out_free;
1132 }
1133
1134 drm_modeset_lock_all(dev);
1135 mutex_lock(&dev->struct_mutex);
1136
1137 if (new_bo->tiling_mode) {
1138 DRM_DEBUG_KMS("buffer used for overlay image can not be tiled\n");
1139 ret = -EINVAL;
1140 goto out_unlock;
1141 }
1142
1143 ret = intel_overlay_recover_from_interrupt(overlay);
1144 if (ret != 0)
1145 goto out_unlock;
1146
1147 if (overlay->crtc != crtc) {
1148 struct drm_display_mode *mode = &crtc->base.mode;
1149 ret = intel_overlay_switch_off(overlay);
1150 if (ret != 0)
1151 goto out_unlock;
1152
1153 ret = check_overlay_possible_on_crtc(overlay, crtc);
1154 if (ret != 0)
1155 goto out_unlock;
1156
1157 overlay->crtc = crtc;
1158 crtc->overlay = overlay;
1159
1160 /* line too wide, i.e. one-line-mode */
1161 if (mode->hdisplay > 1024 &&
1162 intel_panel_fitter_pipe(dev) == crtc->pipe) {
1163 overlay->pfit_active = true;
1164 update_pfit_vscale_ratio(overlay);
1165 } else
1166 overlay->pfit_active = false;
1167 }
1168
1169 ret = check_overlay_dst(overlay, put_image_rec);
1170 if (ret != 0)
1171 goto out_unlock;
1172
1173 if (overlay->pfit_active) {
1174 params->dst_y = ((((u32)put_image_rec->dst_y) << 12) /
1175 overlay->pfit_vscale_ratio);
1176 /* shifting right rounds downwards, so add 1 */
1177 params->dst_h = ((((u32)put_image_rec->dst_height) << 12) /
1178 overlay->pfit_vscale_ratio) + 1;
1179 } else {
1180 params->dst_y = put_image_rec->dst_y;
1181 params->dst_h = put_image_rec->dst_height;
1182 }
1183 params->dst_x = put_image_rec->dst_x;
1184 params->dst_w = put_image_rec->dst_width;
1185
1186 params->src_w = put_image_rec->src_width;
1187 params->src_h = put_image_rec->src_height;
1188 params->src_scan_w = put_image_rec->src_scan_width;
1189 params->src_scan_h = put_image_rec->src_scan_height;
1190 if (params->src_scan_h > params->src_h ||
1191 params->src_scan_w > params->src_w) {
1192 ret = -EINVAL;
1193 goto out_unlock;
1194 }
1195
1196 ret = check_overlay_src(dev, put_image_rec, new_bo);
1197 if (ret != 0)
1198 goto out_unlock;
1199 params->format = put_image_rec->flags & ~I915_OVERLAY_FLAGS_MASK;
1200 params->stride_Y = put_image_rec->stride_Y;
1201 params->stride_UV = put_image_rec->stride_UV;
1202 params->offset_Y = put_image_rec->offset_Y;
1203 params->offset_U = put_image_rec->offset_U;
1204 params->offset_V = put_image_rec->offset_V;
1205
1206 /* Check scaling after src size to prevent a divide-by-zero. */
1207 ret = check_overlay_scaling(params);
1208 if (ret != 0)
1209 goto out_unlock;
1210
1211 ret = intel_overlay_do_put_image(overlay, new_bo, params);
1212 if (ret != 0)
1213 goto out_unlock;
1214
1215 mutex_unlock(&dev->struct_mutex);
1216 drm_modeset_unlock_all(dev);
1217
1218 kfree(params);
1219
1220 return 0;
1221
1222 out_unlock:
1223 mutex_unlock(&dev->struct_mutex);
1224 drm_modeset_unlock_all(dev);
1225 drm_gem_object_unreference_unlocked(&new_bo->base);
1226 out_free:
1227 kfree(params);
1228
1229 return ret;
1230 }
1231
1232 static void update_reg_attrs(struct intel_overlay *overlay,
1233 struct overlay_registers __iomem *regs)
1234 {
1235 iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff),
1236 &regs->OCLRC0);
1237 iowrite32(overlay->saturation, &regs->OCLRC1);
1238 }
1239
1240 static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
1241 {
1242 int i;
1243
1244 if (gamma1 & 0xff000000 || gamma2 & 0xff000000)
1245 return false;
1246
1247 for (i = 0; i < 3; i++) {
1248 if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
1249 return false;
1250 }
1251
1252 return true;
1253 }
1254
1255 static bool check_gamma5_errata(u32 gamma5)
1256 {
1257 int i;
1258
1259 for (i = 0; i < 3; i++) {
1260 if (((gamma5 >> i*8) & 0xff) == 0x80)
1261 return false;
1262 }
1263
1264 return true;
1265 }
1266
1267 static int check_gamma(struct drm_intel_overlay_attrs *attrs)
1268 {
1269 if (!check_gamma_bounds(0, attrs->gamma0) ||
1270 !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
1271 !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
1272 !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
1273 !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
1274 !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
1275 !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
1276 return -EINVAL;
1277
1278 if (!check_gamma5_errata(attrs->gamma5))
1279 return -EINVAL;
1280
1281 return 0;
1282 }
1283
1284 int intel_overlay_attrs(struct drm_device *dev, void *data,
1285 struct drm_file *file_priv)
1286 {
1287 struct drm_intel_overlay_attrs *attrs = data;
1288 struct drm_i915_private *dev_priv = dev->dev_private;
1289 struct intel_overlay *overlay;
1290 struct overlay_registers __iomem *regs;
1291 int ret;
1292
1293 overlay = dev_priv->overlay;
1294 if (!overlay) {
1295 DRM_DEBUG("userspace bug: no overlay\n");
1296 return -ENODEV;
1297 }
1298
1299 drm_modeset_lock_all(dev);
1300 mutex_lock(&dev->struct_mutex);
1301
1302 ret = -EINVAL;
1303 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1304 attrs->color_key = overlay->color_key;
1305 attrs->brightness = overlay->brightness;
1306 attrs->contrast = overlay->contrast;
1307 attrs->saturation = overlay->saturation;
1308
1309 if (!IS_GEN2(dev)) {
1310 attrs->gamma0 = I915_READ(OGAMC0);
1311 attrs->gamma1 = I915_READ(OGAMC1);
1312 attrs->gamma2 = I915_READ(OGAMC2);
1313 attrs->gamma3 = I915_READ(OGAMC3);
1314 attrs->gamma4 = I915_READ(OGAMC4);
1315 attrs->gamma5 = I915_READ(OGAMC5);
1316 }
1317 } else {
1318 if (attrs->brightness < -128 || attrs->brightness > 127)
1319 goto out_unlock;
1320 if (attrs->contrast > 255)
1321 goto out_unlock;
1322 if (attrs->saturation > 1023)
1323 goto out_unlock;
1324
1325 overlay->color_key = attrs->color_key;
1326 overlay->brightness = attrs->brightness;
1327 overlay->contrast = attrs->contrast;
1328 overlay->saturation = attrs->saturation;
1329
1330 regs = intel_overlay_map_regs(overlay);
1331 if (!regs) {
1332 ret = -ENOMEM;
1333 goto out_unlock;
1334 }
1335
1336 update_reg_attrs(overlay, regs);
1337
1338 intel_overlay_unmap_regs(overlay, regs);
1339
1340 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1341 if (IS_GEN2(dev))
1342 goto out_unlock;
1343
1344 if (overlay->active) {
1345 ret = -EBUSY;
1346 goto out_unlock;
1347 }
1348
1349 ret = check_gamma(attrs);
1350 if (ret)
1351 goto out_unlock;
1352
1353 I915_WRITE(OGAMC0, attrs->gamma0);
1354 I915_WRITE(OGAMC1, attrs->gamma1);
1355 I915_WRITE(OGAMC2, attrs->gamma2);
1356 I915_WRITE(OGAMC3, attrs->gamma3);
1357 I915_WRITE(OGAMC4, attrs->gamma4);
1358 I915_WRITE(OGAMC5, attrs->gamma5);
1359 }
1360 }
1361 overlay->color_key_enabled = (attrs->flags & I915_OVERLAY_DISABLE_DEST_COLORKEY) == 0;
1362
1363 ret = 0;
1364 out_unlock:
1365 mutex_unlock(&dev->struct_mutex);
1366 drm_modeset_unlock_all(dev);
1367
1368 return ret;
1369 }
1370
1371 void intel_setup_overlay(struct drm_device *dev)
1372 {
1373 struct drm_i915_private *dev_priv = dev->dev_private;
1374 struct intel_overlay *overlay;
1375 struct drm_i915_gem_object *reg_bo;
1376 struct overlay_registers __iomem *regs;
1377 int ret;
1378
1379 if (!HAS_OVERLAY(dev))
1380 return;
1381
1382 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
1383 if (!overlay)
1384 return;
1385
1386 mutex_lock(&dev->struct_mutex);
1387 if (WARN_ON(dev_priv->overlay))
1388 goto out_free;
1389
1390 overlay->dev = dev;
1391
1392 reg_bo = NULL;
1393 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1394 reg_bo = i915_gem_object_create_stolen(dev, PAGE_SIZE);
1395 if (reg_bo == NULL)
1396 reg_bo = i915_gem_alloc_object(dev, PAGE_SIZE);
1397 if (reg_bo == NULL)
1398 goto out_free;
1399 overlay->reg_bo = reg_bo;
1400
1401 if (OVERLAY_NEEDS_PHYSICAL(dev)) {
1402 ret = i915_gem_object_attach_phys(reg_bo, PAGE_SIZE);
1403 if (ret) {
1404 DRM_ERROR("failed to attach phys overlay regs\n");
1405 goto out_free_bo;
1406 }
1407 overlay->flip_addr = reg_bo->phys_handle->busaddr;
1408 } else {
1409 ret = i915_gem_obj_ggtt_pin(reg_bo, PAGE_SIZE, PIN_MAPPABLE);
1410 if (ret) {
1411 DRM_ERROR("failed to pin overlay register bo\n");
1412 goto out_free_bo;
1413 }
1414 overlay->flip_addr = i915_gem_obj_ggtt_offset(reg_bo);
1415
1416 ret = i915_gem_object_set_to_gtt_domain(reg_bo, true);
1417 if (ret) {
1418 DRM_ERROR("failed to move overlay register bo into the GTT\n");
1419 goto out_unpin_bo;
1420 }
1421 }
1422
1423 /* init all values */
1424 overlay->color_key = 0x0101fe;
1425 overlay->color_key_enabled = true;
1426 overlay->brightness = -19;
1427 overlay->contrast = 75;
1428 overlay->saturation = 146;
1429
1430 regs = intel_overlay_map_regs(overlay);
1431 if (!regs)
1432 goto out_unpin_bo;
1433
1434 memset_io(regs, 0, sizeof(struct overlay_registers));
1435 update_polyphase_filter(regs);
1436 update_reg_attrs(overlay, regs);
1437
1438 intel_overlay_unmap_regs(overlay, regs);
1439
1440 dev_priv->overlay = overlay;
1441 mutex_unlock(&dev->struct_mutex);
1442 DRM_INFO("initialized overlay support\n");
1443 return;
1444
1445 out_unpin_bo:
1446 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1447 i915_gem_object_ggtt_unpin(reg_bo);
1448 out_free_bo:
1449 drm_gem_object_unreference(&reg_bo->base);
1450 out_free:
1451 mutex_unlock(&dev->struct_mutex);
1452 kfree(overlay);
1453 return;
1454 }
1455
1456 void intel_cleanup_overlay(struct drm_device *dev)
1457 {
1458 struct drm_i915_private *dev_priv = dev->dev_private;
1459
1460 if (!dev_priv->overlay)
1461 return;
1462
1463 /* The bo's should be free'd by the generic code already.
1464 * Furthermore modesetting teardown happens beforehand so the
1465 * hardware should be off already */
1466 WARN_ON(dev_priv->overlay->active);
1467
1468 drm_gem_object_unreference_unlocked(&dev_priv->overlay->reg_bo->base);
1469 kfree(dev_priv->overlay);
1470 }
1471
1472 struct intel_overlay_error_state {
1473 struct overlay_registers regs;
1474 unsigned long base;
1475 u32 dovsta;
1476 u32 isr;
1477 };
1478
1479 static struct overlay_registers __iomem *
1480 intel_overlay_map_regs_atomic(struct intel_overlay *overlay)
1481 {
1482 struct drm_i915_private *dev_priv = overlay->dev->dev_private;
1483 struct overlay_registers __iomem *regs;
1484
1485 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1486 /* Cast to make sparse happy, but it's wc memory anyway, so
1487 * equivalent to the wc io mapping on X86. */
1488 regs = (struct overlay_registers __iomem *)
1489 overlay->reg_bo->phys_handle->vaddr;
1490 else
1491 regs = io_mapping_map_atomic_wc(dev_priv->gtt.mappable,
1492 i915_gem_obj_ggtt_offset(overlay->reg_bo));
1493
1494 return regs;
1495 }
1496
1497 static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay,
1498 struct overlay_registers __iomem *regs)
1499 {
1500 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1501 io_mapping_unmap_atomic(regs);
1502 }
1503
1504
1505 struct intel_overlay_error_state *
1506 intel_overlay_capture_error_state(struct drm_device *dev)
1507 {
1508 struct drm_i915_private *dev_priv = dev->dev_private;
1509 struct intel_overlay *overlay = dev_priv->overlay;
1510 struct intel_overlay_error_state *error;
1511 struct overlay_registers __iomem *regs;
1512
1513 if (!overlay || !overlay->active)
1514 return NULL;
1515
1516 error = kmalloc(sizeof(*error), GFP_ATOMIC);
1517 if (error == NULL)
1518 return NULL;
1519
1520 error->dovsta = I915_READ(DOVSTA);
1521 error->isr = I915_READ(ISR);
1522 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1523 error->base = (__force long)overlay->reg_bo->phys_handle->vaddr;
1524 else
1525 error->base = i915_gem_obj_ggtt_offset(overlay->reg_bo);
1526
1527 regs = intel_overlay_map_regs_atomic(overlay);
1528 if (!regs)
1529 goto err;
1530
1531 memcpy_fromio(&error->regs, regs, sizeof(struct overlay_registers));
1532 intel_overlay_unmap_regs_atomic(overlay, regs);
1533
1534 return error;
1535
1536 err:
1537 kfree(error);
1538 return NULL;
1539 }
1540
1541 void
1542 intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
1543 struct intel_overlay_error_state *error)
1544 {
1545 i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
1546 error->dovsta, error->isr);
1547 i915_error_printf(m, " Register file at 0x%08lx:\n",
1548 error->base);
1549
1550 #define P(x) i915_error_printf(m, " " #x ": 0x%08x\n", error->regs.x)
1551 P(OBUF_0Y);
1552 P(OBUF_1Y);
1553 P(OBUF_0U);
1554 P(OBUF_0V);
1555 P(OBUF_1U);
1556 P(OBUF_1V);
1557 P(OSTRIDE);
1558 P(YRGB_VPH);
1559 P(UV_VPH);
1560 P(HORZ_PH);
1561 P(INIT_PHS);
1562 P(DWINPOS);
1563 P(DWINSZ);
1564 P(SWIDTH);
1565 P(SWIDTHSW);
1566 P(SHEIGHT);
1567 P(YRGBSCALE);
1568 P(UVSCALE);
1569 P(OCLRC0);
1570 P(OCLRC1);
1571 P(DCLRKV);
1572 P(DCLRKM);
1573 P(SCLRKVH);
1574 P(SCLRKVL);
1575 P(SCLRKEN);
1576 P(OCONFIG);
1577 P(OCMD);
1578 P(OSTART_0Y);
1579 P(OSTART_1Y);
1580 P(OSTART_0U);
1581 P(OSTART_0V);
1582 P(OSTART_1U);
1583 P(OSTART_1V);
1584 P(OTILEOFF_0Y);
1585 P(OTILEOFF_1Y);
1586 P(OTILEOFF_0U);
1587 P(OTILEOFF_0V);
1588 P(OTILEOFF_1U);
1589 P(OTILEOFF_1V);
1590 P(FASTHSCALE);
1591 P(UVSCALEV);
1592 #undef P
1593 }
Linux with added FPC-III support