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bna: remove oper_state_cbfn from struct bna_rxf
[linux/fpc-iii.git] / drivers / gpu / drm / i915 / intel_overlay.c
blobdd92122ed95c87778319d6bef78930c4e381a62b
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 &i915_ggtt_view_normal);
725 if (ret != 0)
726 return ret;
727
728 ret = i915_gem_object_put_fence(new_bo);
729 if (ret)
730 goto out_unpin;
731
732 if (!overlay->active) {
733 u32 oconfig;
734 regs = intel_overlay_map_regs(overlay);
735 if (!regs) {
736 ret = -ENOMEM;
737 goto out_unpin;
738 }
739 oconfig = OCONF_CC_OUT_8BIT;
740 if (IS_GEN4(overlay->dev))
741 oconfig |= OCONF_CSC_MODE_BT709;
742 oconfig |= pipe == 0 ?
743 OCONF_PIPE_A : OCONF_PIPE_B;
744 iowrite32(oconfig, &regs->OCONFIG);
745 intel_overlay_unmap_regs(overlay, regs);
746
747 ret = intel_overlay_on(overlay);
748 if (ret != 0)
749 goto out_unpin;
750 }
751
752 regs = intel_overlay_map_regs(overlay);
753 if (!regs) {
754 ret = -ENOMEM;
755 goto out_unpin;
756 }
757
758 iowrite32((params->dst_y << 16) | params->dst_x, &regs->DWINPOS);
759 iowrite32((params->dst_h << 16) | params->dst_w, &regs->DWINSZ);
760
761 if (params->format & I915_OVERLAY_YUV_PACKED)
762 tmp_width = packed_width_bytes(params->format, params->src_w);
763 else
764 tmp_width = params->src_w;
765
766 swidth = params->src_w;
767 swidthsw = calc_swidthsw(overlay->dev, params->offset_Y, tmp_width);
768 sheight = params->src_h;
769 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_Y, &regs->OBUF_0Y);
770 ostride = params->stride_Y;
771
772 if (params->format & I915_OVERLAY_YUV_PLANAR) {
773 int uv_hscale = uv_hsubsampling(params->format);
774 int uv_vscale = uv_vsubsampling(params->format);
775 u32 tmp_U, tmp_V;
776 swidth |= (params->src_w/uv_hscale) << 16;
777 tmp_U = calc_swidthsw(overlay->dev, params->offset_U,
778 params->src_w/uv_hscale);
779 tmp_V = calc_swidthsw(overlay->dev, params->offset_V,
780 params->src_w/uv_hscale);
781 swidthsw |= max_t(u32, tmp_U, tmp_V) << 16;
782 sheight |= (params->src_h/uv_vscale) << 16;
783 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_U, &regs->OBUF_0U);
784 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_V, &regs->OBUF_0V);
785 ostride |= params->stride_UV << 16;
786 }
787
788 iowrite32(swidth, &regs->SWIDTH);
789 iowrite32(swidthsw, &regs->SWIDTHSW);
790 iowrite32(sheight, &regs->SHEIGHT);
791 iowrite32(ostride, &regs->OSTRIDE);
792
793 scale_changed = update_scaling_factors(overlay, regs, params);
794
795 update_colorkey(overlay, regs);
796
797 iowrite32(overlay_cmd_reg(params), &regs->OCMD);
798
799 intel_overlay_unmap_regs(overlay, regs);
800
801 ret = intel_overlay_continue(overlay, scale_changed);
802 if (ret)
803 goto out_unpin;
804
805 i915_gem_track_fb(overlay->vid_bo, new_bo,
806 INTEL_FRONTBUFFER_OVERLAY(pipe));
807
808 overlay->old_vid_bo = overlay->vid_bo;
809 overlay->vid_bo = new_bo;
810
811 intel_frontbuffer_flip(dev,
812 INTEL_FRONTBUFFER_OVERLAY(pipe));
813
814 return 0;
815
816 out_unpin:
817 i915_gem_object_ggtt_unpin(new_bo);
818 return ret;
819 }
820
821 int intel_overlay_switch_off(struct intel_overlay *overlay)
822 {
823 struct overlay_registers __iomem *regs;
824 struct drm_device *dev = overlay->dev;
825 int ret;
826
827 BUG_ON(!mutex_is_locked(&dev->struct_mutex));
828 BUG_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
829
830 ret = intel_overlay_recover_from_interrupt(overlay);
831 if (ret != 0)
832 return ret;
833
834 if (!overlay->active)
835 return 0;
836
837 ret = intel_overlay_release_old_vid(overlay);
838 if (ret != 0)
839 return ret;
840
841 regs = intel_overlay_map_regs(overlay);
842 iowrite32(0, &regs->OCMD);
843 intel_overlay_unmap_regs(overlay, regs);
844
845 ret = intel_overlay_off(overlay);
846 if (ret != 0)
847 return ret;
848
849 intel_overlay_off_tail(overlay);
850 return 0;
851 }
852
853 static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
854 struct intel_crtc *crtc)
855 {
856 if (!crtc->active)
857 return -EINVAL;
858
859 /* can't use the overlay with double wide pipe */
860 if (crtc->config->double_wide)
861 return -EINVAL;
862
863 return 0;
864 }
865
866 static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
867 {
868 struct drm_device *dev = overlay->dev;
869 struct drm_i915_private *dev_priv = dev->dev_private;
870 u32 pfit_control = I915_READ(PFIT_CONTROL);
871 u32 ratio;
872
873 /* XXX: This is not the same logic as in the xorg driver, but more in
874 * line with the intel documentation for the i965
875 */
876 if (INTEL_INFO(dev)->gen >= 4) {
877 /* on i965 use the PGM reg to read out the autoscaler values */
878 ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
879 } else {
880 if (pfit_control & VERT_AUTO_SCALE)
881 ratio = I915_READ(PFIT_AUTO_RATIOS);
882 else
883 ratio = I915_READ(PFIT_PGM_RATIOS);
884 ratio >>= PFIT_VERT_SCALE_SHIFT;
885 }
886
887 overlay->pfit_vscale_ratio = ratio;
888 }
889
890 static int check_overlay_dst(struct intel_overlay *overlay,
891 struct drm_intel_overlay_put_image *rec)
892 {
893 struct drm_display_mode *mode = &overlay->crtc->base.mode;
894
895 if (rec->dst_x < mode->hdisplay &&
896 rec->dst_x + rec->dst_width <= mode->hdisplay &&
897 rec->dst_y < mode->vdisplay &&
898 rec->dst_y + rec->dst_height <= mode->vdisplay)
899 return 0;
900 else
901 return -EINVAL;
902 }
903
904 static int check_overlay_scaling(struct put_image_params *rec)
905 {
906 u32 tmp;
907
908 /* downscaling limit is 8.0 */
909 tmp = ((rec->src_scan_h << 16) / rec->dst_h) >> 16;
910 if (tmp > 7)
911 return -EINVAL;
912 tmp = ((rec->src_scan_w << 16) / rec->dst_w) >> 16;
913 if (tmp > 7)
914 return -EINVAL;
915
916 return 0;
917 }
918
919 static int check_overlay_src(struct drm_device *dev,
920 struct drm_intel_overlay_put_image *rec,
921 struct drm_i915_gem_object *new_bo)
922 {
923 int uv_hscale = uv_hsubsampling(rec->flags);
924 int uv_vscale = uv_vsubsampling(rec->flags);
925 u32 stride_mask;
926 int depth;
927 u32 tmp;
928
929 /* check src dimensions */
930 if (IS_845G(dev) || IS_I830(dev)) {
931 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
932 rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
933 return -EINVAL;
934 } else {
935 if (rec->src_height > IMAGE_MAX_HEIGHT ||
936 rec->src_width > IMAGE_MAX_WIDTH)
937 return -EINVAL;
938 }
939
940 /* better safe than sorry, use 4 as the maximal subsampling ratio */
941 if (rec->src_height < N_VERT_Y_TAPS*4 ||
942 rec->src_width < N_HORIZ_Y_TAPS*4)
943 return -EINVAL;
944
945 /* check alignment constraints */
946 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
947 case I915_OVERLAY_RGB:
948 /* not implemented */
949 return -EINVAL;
950
951 case I915_OVERLAY_YUV_PACKED:
952 if (uv_vscale != 1)
953 return -EINVAL;
954
955 depth = packed_depth_bytes(rec->flags);
956 if (depth < 0)
957 return depth;
958
959 /* ignore UV planes */
960 rec->stride_UV = 0;
961 rec->offset_U = 0;
962 rec->offset_V = 0;
963 /* check pixel alignment */
964 if (rec->offset_Y % depth)
965 return -EINVAL;
966 break;
967
968 case I915_OVERLAY_YUV_PLANAR:
969 if (uv_vscale < 0 || uv_hscale < 0)
970 return -EINVAL;
971 /* no offset restrictions for planar formats */
972 break;
973
974 default:
975 return -EINVAL;
976 }
977
978 if (rec->src_width % uv_hscale)
979 return -EINVAL;
980
981 /* stride checking */
982 if (IS_I830(dev) || IS_845G(dev))
983 stride_mask = 255;
984 else
985 stride_mask = 63;
986
987 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
988 return -EINVAL;
989 if (IS_GEN4(dev) && rec->stride_Y < 512)
990 return -EINVAL;
991
992 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
993 4096 : 8192;
994 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
995 return -EINVAL;
996
997 /* check buffer dimensions */
998 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
999 case I915_OVERLAY_RGB:
1000 case I915_OVERLAY_YUV_PACKED:
1001 /* always 4 Y values per depth pixels */
1002 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
1003 return -EINVAL;
1004
1005 tmp = rec->stride_Y*rec->src_height;
1006 if (rec->offset_Y + tmp > new_bo->base.size)
1007 return -EINVAL;
1008 break;
1009
1010 case I915_OVERLAY_YUV_PLANAR:
1011 if (rec->src_width > rec->stride_Y)
1012 return -EINVAL;
1013 if (rec->src_width/uv_hscale > rec->stride_UV)
1014 return -EINVAL;
1015
1016 tmp = rec->stride_Y * rec->src_height;
1017 if (rec->offset_Y + tmp > new_bo->base.size)
1018 return -EINVAL;
1019
1020 tmp = rec->stride_UV * (rec->src_height / uv_vscale);
1021 if (rec->offset_U + tmp > new_bo->base.size ||
1022 rec->offset_V + tmp > new_bo->base.size)
1023 return -EINVAL;
1024 break;
1025 }
1026
1027 return 0;
1028 }
1029
1030 /**
1031 * Return the pipe currently connected to the panel fitter,
1032 * or -1 if the panel fitter is not present or not in use
1033 */
1034 static int intel_panel_fitter_pipe(struct drm_device *dev)
1035 {
1036 struct drm_i915_private *dev_priv = dev->dev_private;
1037 u32 pfit_control;
1038
1039 /* i830 doesn't have a panel fitter */
1040 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
1041 return -1;
1042
1043 pfit_control = I915_READ(PFIT_CONTROL);
1044
1045 /* See if the panel fitter is in use */
1046 if ((pfit_control & PFIT_ENABLE) == 0)
1047 return -1;
1048
1049 /* 965 can place panel fitter on either pipe */
1050 if (IS_GEN4(dev))
1051 return (pfit_control >> 29) & 0x3;
1052
1053 /* older chips can only use pipe 1 */
1054 return 1;
1055 }
1056
1057 int intel_overlay_put_image(struct drm_device *dev, void *data,
1058 struct drm_file *file_priv)
1059 {
1060 struct drm_intel_overlay_put_image *put_image_rec = data;
1061 struct drm_i915_private *dev_priv = dev->dev_private;
1062 struct intel_overlay *overlay;
1063 struct drm_crtc *drmmode_crtc;
1064 struct intel_crtc *crtc;
1065 struct drm_i915_gem_object *new_bo;
1066 struct put_image_params *params;
1067 int ret;
1068
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 overlay = dev_priv->overlay;
1265 if (!overlay) {
1266 DRM_DEBUG("userspace bug: no overlay\n");
1267 return -ENODEV;
1268 }
1269
1270 drm_modeset_lock_all(dev);
1271 mutex_lock(&dev->struct_mutex);
1272
1273 ret = -EINVAL;
1274 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1275 attrs->color_key = overlay->color_key;
1276 attrs->brightness = overlay->brightness;
1277 attrs->contrast = overlay->contrast;
1278 attrs->saturation = overlay->saturation;
1279
1280 if (!IS_GEN2(dev)) {
1281 attrs->gamma0 = I915_READ(OGAMC0);
1282 attrs->gamma1 = I915_READ(OGAMC1);
1283 attrs->gamma2 = I915_READ(OGAMC2);
1284 attrs->gamma3 = I915_READ(OGAMC3);
1285 attrs->gamma4 = I915_READ(OGAMC4);
1286 attrs->gamma5 = I915_READ(OGAMC5);
1287 }
1288 } else {
1289 if (attrs->brightness < -128 || attrs->brightness > 127)
1290 goto out_unlock;
1291 if (attrs->contrast > 255)
1292 goto out_unlock;
1293 if (attrs->saturation > 1023)
1294 goto out_unlock;
1295
1296 overlay->color_key = attrs->color_key;
1297 overlay->brightness = attrs->brightness;
1298 overlay->contrast = attrs->contrast;
1299 overlay->saturation = attrs->saturation;
1300
1301 regs = intel_overlay_map_regs(overlay);
1302 if (!regs) {
1303 ret = -ENOMEM;
1304 goto out_unlock;
1305 }
1306
1307 update_reg_attrs(overlay, regs);
1308
1309 intel_overlay_unmap_regs(overlay, regs);
1310
1311 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1312 if (IS_GEN2(dev))
1313 goto out_unlock;
1314
1315 if (overlay->active) {
1316 ret = -EBUSY;
1317 goto out_unlock;
1318 }
1319
1320 ret = check_gamma(attrs);
1321 if (ret)
1322 goto out_unlock;
1323
1324 I915_WRITE(OGAMC0, attrs->gamma0);
1325 I915_WRITE(OGAMC1, attrs->gamma1);
1326 I915_WRITE(OGAMC2, attrs->gamma2);
1327 I915_WRITE(OGAMC3, attrs->gamma3);
1328 I915_WRITE(OGAMC4, attrs->gamma4);
1329 I915_WRITE(OGAMC5, attrs->gamma5);
1330 }
1331 }
1332
1333 ret = 0;
1334 out_unlock:
1335 mutex_unlock(&dev->struct_mutex);
1336 drm_modeset_unlock_all(dev);
1337
1338 return ret;
1339 }
1340
1341 void intel_setup_overlay(struct drm_device *dev)
1342 {
1343 struct drm_i915_private *dev_priv = dev->dev_private;
1344 struct intel_overlay *overlay;
1345 struct drm_i915_gem_object *reg_bo;
1346 struct overlay_registers __iomem *regs;
1347 int ret;
1348
1349 if (!HAS_OVERLAY(dev))
1350 return;
1351
1352 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
1353 if (!overlay)
1354 return;
1355
1356 mutex_lock(&dev->struct_mutex);
1357 if (WARN_ON(dev_priv->overlay))
1358 goto out_free;
1359
1360 overlay->dev = dev;
1361
1362 reg_bo = NULL;
1363 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1364 reg_bo = i915_gem_object_create_stolen(dev, PAGE_SIZE);
1365 if (reg_bo == NULL)
1366 reg_bo = i915_gem_alloc_object(dev, PAGE_SIZE);
1367 if (reg_bo == NULL)
1368 goto out_free;
1369 overlay->reg_bo = reg_bo;
1370
1371 if (OVERLAY_NEEDS_PHYSICAL(dev)) {
1372 ret = i915_gem_object_attach_phys(reg_bo, PAGE_SIZE);
1373 if (ret) {
1374 DRM_ERROR("failed to attach phys overlay regs\n");
1375 goto out_free_bo;
1376 }
1377 overlay->flip_addr = reg_bo->phys_handle->busaddr;
1378 } else {
1379 ret = i915_gem_obj_ggtt_pin(reg_bo, PAGE_SIZE, PIN_MAPPABLE);
1380 if (ret) {
1381 DRM_ERROR("failed to pin overlay register bo\n");
1382 goto out_free_bo;
1383 }
1384 overlay->flip_addr = i915_gem_obj_ggtt_offset(reg_bo);
1385
1386 ret = i915_gem_object_set_to_gtt_domain(reg_bo, true);
1387 if (ret) {
1388 DRM_ERROR("failed to move overlay register bo into the GTT\n");
1389 goto out_unpin_bo;
1390 }
1391 }
1392
1393 /* init all values */
1394 overlay->color_key = 0x0101fe;
1395 overlay->brightness = -19;
1396 overlay->contrast = 75;
1397 overlay->saturation = 146;
1398
1399 regs = intel_overlay_map_regs(overlay);
1400 if (!regs)
1401 goto out_unpin_bo;
1402
1403 memset_io(regs, 0, sizeof(struct overlay_registers));
1404 update_polyphase_filter(regs);
1405 update_reg_attrs(overlay, regs);
1406
1407 intel_overlay_unmap_regs(overlay, regs);
1408
1409 dev_priv->overlay = overlay;
1410 mutex_unlock(&dev->struct_mutex);
1411 DRM_INFO("initialized overlay support\n");
1412 return;
1413
1414 out_unpin_bo:
1415 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1416 i915_gem_object_ggtt_unpin(reg_bo);
1417 out_free_bo:
1418 drm_gem_object_unreference(&reg_bo->base);
1419 out_free:
1420 mutex_unlock(&dev->struct_mutex);
1421 kfree(overlay);
1422 return;
1423 }
1424
1425 void intel_cleanup_overlay(struct drm_device *dev)
1426 {
1427 struct drm_i915_private *dev_priv = dev->dev_private;
1428
1429 if (!dev_priv->overlay)
1430 return;
1431
1432 /* The bo's should be free'd by the generic code already.
1433 * Furthermore modesetting teardown happens beforehand so the
1434 * hardware should be off already */
1435 BUG_ON(dev_priv->overlay->active);
1436
1437 drm_gem_object_unreference_unlocked(&dev_priv->overlay->reg_bo->base);
1438 kfree(dev_priv->overlay);
1439 }
1440
1441 struct intel_overlay_error_state {
1442 struct overlay_registers regs;
1443 unsigned long base;
1444 u32 dovsta;
1445 u32 isr;
1446 };
1447
1448 static struct overlay_registers __iomem *
1449 intel_overlay_map_regs_atomic(struct intel_overlay *overlay)
1450 {
1451 struct drm_i915_private *dev_priv = overlay->dev->dev_private;
1452 struct overlay_registers __iomem *regs;
1453
1454 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1455 /* Cast to make sparse happy, but it's wc memory anyway, so
1456 * equivalent to the wc io mapping on X86. */
1457 regs = (struct overlay_registers __iomem *)
1458 overlay->reg_bo->phys_handle->vaddr;
1459 else
1460 regs = io_mapping_map_atomic_wc(dev_priv->gtt.mappable,
1461 i915_gem_obj_ggtt_offset(overlay->reg_bo));
1462
1463 return regs;
1464 }
1465
1466 static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay,
1467 struct overlay_registers __iomem *regs)
1468 {
1469 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1470 io_mapping_unmap_atomic(regs);
1471 }
1472
1473
1474 struct intel_overlay_error_state *
1475 intel_overlay_capture_error_state(struct drm_device *dev)
1476 {
1477 struct drm_i915_private *dev_priv = dev->dev_private;
1478 struct intel_overlay *overlay = dev_priv->overlay;
1479 struct intel_overlay_error_state *error;
1480 struct overlay_registers __iomem *regs;
1481
1482 if (!overlay || !overlay->active)
1483 return NULL;
1484
1485 error = kmalloc(sizeof(*error), GFP_ATOMIC);
1486 if (error == NULL)
1487 return NULL;
1488
1489 error->dovsta = I915_READ(DOVSTA);
1490 error->isr = I915_READ(ISR);
1491 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1492 error->base = (__force long)overlay->reg_bo->phys_handle->vaddr;
1493 else
1494 error->base = i915_gem_obj_ggtt_offset(overlay->reg_bo);
1495
1496 regs = intel_overlay_map_regs_atomic(overlay);
1497 if (!regs)
1498 goto err;
1499
1500 memcpy_fromio(&error->regs, regs, sizeof(struct overlay_registers));
1501 intel_overlay_unmap_regs_atomic(overlay, regs);
1502
1503 return error;
1504
1505 err:
1506 kfree(error);
1507 return NULL;
1508 }
1509
1510 void
1511 intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
1512 struct intel_overlay_error_state *error)
1513 {
1514 i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
1515 error->dovsta, error->isr);
1516 i915_error_printf(m, " Register file at 0x%08lx:\n",
1517 error->base);
1518
1519 #define P(x) i915_error_printf(m, " " #x ": 0x%08x\n", error->regs.x)
1520 P(OBUF_0Y);
1521 P(OBUF_1Y);
1522 P(OBUF_0U);
1523 P(OBUF_0V);
1524 P(OBUF_1U);
1525 P(OBUF_1V);
1526 P(OSTRIDE);
1527 P(YRGB_VPH);
1528 P(UV_VPH);
1529 P(HORZ_PH);
1530 P(INIT_PHS);
1531 P(DWINPOS);
1532 P(DWINSZ);
1533 P(SWIDTH);
1534 P(SWIDTHSW);
1535 P(SHEIGHT);
1536 P(YRGBSCALE);
1537 P(UVSCALE);
1538 P(OCLRC0);
1539 P(OCLRC1);
1540 P(DCLRKV);
1541 P(DCLRKM);
1542 P(SCLRKVH);
1543 P(SCLRKVL);
1544 P(SCLRKEN);
1545 P(OCONFIG);
1546 P(OCMD);
1547 P(OSTART_0Y);
1548 P(OSTART_1Y);
1549 P(OSTART_0U);
1550 P(OSTART_0V);
1551 P(OSTART_1U);
1552 P(OSTART_1V);
1553 P(OTILEOFF_0Y);
1554 P(OTILEOFF_1Y);
1555 P(OTILEOFF_0U);
1556 P(OTILEOFF_0V);
1557 P(OTILEOFF_1U);
1558 P(OTILEOFF_1V);
1559 P(FASTHSCALE);
1560 P(UVSCALEV);
1561 #undef P
1562 }
Linux with added FPC-III support