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drm/i915: Refer to GGTT {,VM} consistently
[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 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 = to_i915(overlay->dev);
194 struct i915_ggtt *ggtt = &dev_priv->ggtt;
195 struct overlay_registers __iomem *regs;
196
197 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
198 regs = (struct overlay_registers __iomem *)overlay->reg_bo->phys_handle->vaddr;
199 else
200 regs = io_mapping_map_wc(ggtt->mappable,
201 i915_gem_obj_ggtt_offset(overlay->reg_bo));
202
203 return regs;
204 }
205
206 static void intel_overlay_unmap_regs(struct intel_overlay *overlay,
207 struct overlay_registers __iomem *regs)
208 {
209 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
210 io_mapping_unmap(regs);
211 }
212
213 static int intel_overlay_do_wait_request(struct intel_overlay *overlay,
214 struct drm_i915_gem_request *req,
215 void (*tail)(struct intel_overlay *))
216 {
217 int ret;
218
219 WARN_ON(overlay->last_flip_req);
220 i915_gem_request_assign(&overlay->last_flip_req, req);
221 i915_add_request(req);
222
223 overlay->flip_tail = tail;
224 ret = i915_wait_request(overlay->last_flip_req);
225 if (ret)
226 return ret;
227
228 i915_gem_request_assign(&overlay->last_flip_req, NULL);
229 return 0;
230 }
231
232 /* overlay needs to be disable in OCMD reg */
233 static int intel_overlay_on(struct intel_overlay *overlay)
234 {
235 struct drm_device *dev = overlay->dev;
236 struct drm_i915_private *dev_priv = dev->dev_private;
237 struct intel_engine_cs *engine = &dev_priv->engine[RCS];
238 struct drm_i915_gem_request *req;
239 int ret;
240
241 WARN_ON(overlay->active);
242 WARN_ON(IS_I830(dev) && !(dev_priv->quirks & QUIRK_PIPEA_FORCE));
243
244 req = i915_gem_request_alloc(engine, NULL);
245 if (IS_ERR(req))
246 return PTR_ERR(req);
247
248 ret = intel_ring_begin(req, 4);
249 if (ret) {
250 i915_gem_request_cancel(req);
251 return ret;
252 }
253
254 overlay->active = true;
255
256 intel_ring_emit(engine, MI_OVERLAY_FLIP | MI_OVERLAY_ON);
257 intel_ring_emit(engine, overlay->flip_addr | OFC_UPDATE);
258 intel_ring_emit(engine, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
259 intel_ring_emit(engine, MI_NOOP);
260 intel_ring_advance(engine);
261
262 return intel_overlay_do_wait_request(overlay, req, NULL);
263 }
264
265 /* overlay needs to be enabled in OCMD reg */
266 static int intel_overlay_continue(struct intel_overlay *overlay,
267 bool load_polyphase_filter)
268 {
269 struct drm_device *dev = overlay->dev;
270 struct drm_i915_private *dev_priv = dev->dev_private;
271 struct intel_engine_cs *engine = &dev_priv->engine[RCS];
272 struct drm_i915_gem_request *req;
273 u32 flip_addr = overlay->flip_addr;
274 u32 tmp;
275 int ret;
276
277 WARN_ON(!overlay->active);
278
279 if (load_polyphase_filter)
280 flip_addr |= OFC_UPDATE;
281
282 /* check for underruns */
283 tmp = I915_READ(DOVSTA);
284 if (tmp & (1 << 17))
285 DRM_DEBUG("overlay underrun, DOVSTA: %x\n", tmp);
286
287 req = i915_gem_request_alloc(engine, NULL);
288 if (IS_ERR(req))
289 return PTR_ERR(req);
290
291 ret = intel_ring_begin(req, 2);
292 if (ret) {
293 i915_gem_request_cancel(req);
294 return ret;
295 }
296
297 intel_ring_emit(engine, MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
298 intel_ring_emit(engine, flip_addr);
299 intel_ring_advance(engine);
300
301 WARN_ON(overlay->last_flip_req);
302 i915_gem_request_assign(&overlay->last_flip_req, req);
303 i915_add_request(req);
304
305 return 0;
306 }
307
308 static void intel_overlay_release_old_vid_tail(struct intel_overlay *overlay)
309 {
310 struct drm_i915_gem_object *obj = overlay->old_vid_bo;
311
312 i915_gem_object_ggtt_unpin(obj);
313 drm_gem_object_unreference(&obj->base);
314
315 overlay->old_vid_bo = NULL;
316 }
317
318 static void intel_overlay_off_tail(struct intel_overlay *overlay)
319 {
320 struct drm_i915_gem_object *obj = overlay->vid_bo;
321
322 /* never have the overlay hw on without showing a frame */
323 if (WARN_ON(!obj))
324 return;
325
326 i915_gem_object_ggtt_unpin(obj);
327 drm_gem_object_unreference(&obj->base);
328 overlay->vid_bo = NULL;
329
330 overlay->crtc->overlay = NULL;
331 overlay->crtc = NULL;
332 overlay->active = false;
333 }
334
335 /* overlay needs to be disabled in OCMD reg */
336 static int intel_overlay_off(struct intel_overlay *overlay)
337 {
338 struct drm_device *dev = overlay->dev;
339 struct drm_i915_private *dev_priv = dev->dev_private;
340 struct intel_engine_cs *engine = &dev_priv->engine[RCS];
341 struct drm_i915_gem_request *req;
342 u32 flip_addr = overlay->flip_addr;
343 int ret;
344
345 WARN_ON(!overlay->active);
346
347 /* According to intel docs the overlay hw may hang (when switching
348 * off) without loading the filter coeffs. It is however unclear whether
349 * this applies to the disabling of the overlay or to the switching off
350 * of the hw. Do it in both cases */
351 flip_addr |= OFC_UPDATE;
352
353 req = i915_gem_request_alloc(engine, NULL);
354 if (IS_ERR(req))
355 return PTR_ERR(req);
356
357 ret = intel_ring_begin(req, 6);
358 if (ret) {
359 i915_gem_request_cancel(req);
360 return ret;
361 }
362
363 /* wait for overlay to go idle */
364 intel_ring_emit(engine, MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
365 intel_ring_emit(engine, flip_addr);
366 intel_ring_emit(engine, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
367 /* turn overlay off */
368 if (IS_I830(dev)) {
369 /* Workaround: Don't disable the overlay fully, since otherwise
370 * it dies on the next OVERLAY_ON cmd. */
371 intel_ring_emit(engine, MI_NOOP);
372 intel_ring_emit(engine, MI_NOOP);
373 intel_ring_emit(engine, MI_NOOP);
374 } else {
375 intel_ring_emit(engine, MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
376 intel_ring_emit(engine, flip_addr);
377 intel_ring_emit(engine,
378 MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
379 }
380 intel_ring_advance(engine);
381
382 return intel_overlay_do_wait_request(overlay, req, intel_overlay_off_tail);
383 }
384
385 /* recover from an interruption due to a signal
386 * We have to be careful not to repeat work forever an make forward progess. */
387 static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay)
388 {
389 int ret;
390
391 if (overlay->last_flip_req == NULL)
392 return 0;
393
394 ret = i915_wait_request(overlay->last_flip_req);
395 if (ret)
396 return ret;
397
398 if (overlay->flip_tail)
399 overlay->flip_tail(overlay);
400
401 i915_gem_request_assign(&overlay->last_flip_req, NULL);
402 return 0;
403 }
404
405 /* Wait for pending overlay flip and release old frame.
406 * Needs to be called before the overlay register are changed
407 * via intel_overlay_(un)map_regs
408 */
409 static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
410 {
411 struct drm_device *dev = overlay->dev;
412 struct drm_i915_private *dev_priv = dev->dev_private;
413 struct intel_engine_cs *engine = &dev_priv->engine[RCS];
414 int ret;
415
416 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
417
418 /* Only wait if there is actually an old frame to release to
419 * guarantee forward progress.
420 */
421 if (!overlay->old_vid_bo)
422 return 0;
423
424 if (I915_READ(ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT) {
425 /* synchronous slowpath */
426 struct drm_i915_gem_request *req;
427
428 req = i915_gem_request_alloc(engine, NULL);
429 if (IS_ERR(req))
430 return PTR_ERR(req);
431
432 ret = intel_ring_begin(req, 2);
433 if (ret) {
434 i915_gem_request_cancel(req);
435 return ret;
436 }
437
438 intel_ring_emit(engine,
439 MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
440 intel_ring_emit(engine, MI_NOOP);
441 intel_ring_advance(engine);
442
443 ret = intel_overlay_do_wait_request(overlay, req,
444 intel_overlay_release_old_vid_tail);
445 if (ret)
446 return ret;
447 }
448
449 intel_overlay_release_old_vid_tail(overlay);
450
451
452 i915_gem_track_fb(overlay->old_vid_bo, NULL,
453 INTEL_FRONTBUFFER_OVERLAY(overlay->crtc->pipe));
454 return 0;
455 }
456
457 void intel_overlay_reset(struct drm_i915_private *dev_priv)
458 {
459 struct intel_overlay *overlay = dev_priv->overlay;
460
461 if (!overlay)
462 return;
463
464 intel_overlay_release_old_vid(overlay);
465
466 overlay->last_flip_req = NULL;
467 overlay->old_xscale = 0;
468 overlay->old_yscale = 0;
469 overlay->crtc = NULL;
470 overlay->active = false;
471 }
472
473 struct put_image_params {
474 int format;
475 short dst_x;
476 short dst_y;
477 short dst_w;
478 short dst_h;
479 short src_w;
480 short src_scan_h;
481 short src_scan_w;
482 short src_h;
483 short stride_Y;
484 short stride_UV;
485 int offset_Y;
486 int offset_U;
487 int offset_V;
488 };
489
490 static int packed_depth_bytes(u32 format)
491 {
492 switch (format & I915_OVERLAY_DEPTH_MASK) {
493 case I915_OVERLAY_YUV422:
494 return 4;
495 case I915_OVERLAY_YUV411:
496 /* return 6; not implemented */
497 default:
498 return -EINVAL;
499 }
500 }
501
502 static int packed_width_bytes(u32 format, short width)
503 {
504 switch (format & I915_OVERLAY_DEPTH_MASK) {
505 case I915_OVERLAY_YUV422:
506 return width << 1;
507 default:
508 return -EINVAL;
509 }
510 }
511
512 static int uv_hsubsampling(u32 format)
513 {
514 switch (format & I915_OVERLAY_DEPTH_MASK) {
515 case I915_OVERLAY_YUV422:
516 case I915_OVERLAY_YUV420:
517 return 2;
518 case I915_OVERLAY_YUV411:
519 case I915_OVERLAY_YUV410:
520 return 4;
521 default:
522 return -EINVAL;
523 }
524 }
525
526 static int uv_vsubsampling(u32 format)
527 {
528 switch (format & I915_OVERLAY_DEPTH_MASK) {
529 case I915_OVERLAY_YUV420:
530 case I915_OVERLAY_YUV410:
531 return 2;
532 case I915_OVERLAY_YUV422:
533 case I915_OVERLAY_YUV411:
534 return 1;
535 default:
536 return -EINVAL;
537 }
538 }
539
540 static u32 calc_swidthsw(struct drm_device *dev, u32 offset, u32 width)
541 {
542 u32 mask, shift, ret;
543 if (IS_GEN2(dev)) {
544 mask = 0x1f;
545 shift = 5;
546 } else {
547 mask = 0x3f;
548 shift = 6;
549 }
550 ret = ((offset + width + mask) >> shift) - (offset >> shift);
551 if (!IS_GEN2(dev))
552 ret <<= 1;
553 ret -= 1;
554 return ret << 2;
555 }
556
557 static const u16 y_static_hcoeffs[N_HORIZ_Y_TAPS * N_PHASES] = {
558 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0,
559 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440,
560 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0,
561 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380,
562 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320,
563 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0,
564 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260,
565 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200,
566 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0,
567 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160,
568 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120,
569 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0,
570 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0,
571 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060,
572 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040,
573 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020,
574 0xb000, 0x3000, 0x0800, 0x3000, 0xb000
575 };
576
577 static const u16 uv_static_hcoeffs[N_HORIZ_UV_TAPS * N_PHASES] = {
578 0x3000, 0x1800, 0x1800, 0xb000, 0x18d0, 0x2e60,
579 0xb000, 0x1990, 0x2ce0, 0xb020, 0x1a68, 0x2b40,
580 0xb040, 0x1b20, 0x29e0, 0xb060, 0x1bd8, 0x2880,
581 0xb080, 0x1c88, 0x3e60, 0xb0a0, 0x1d28, 0x3c00,
582 0xb0c0, 0x1db8, 0x39e0, 0xb0e0, 0x1e40, 0x37e0,
583 0xb100, 0x1eb8, 0x3620, 0xb100, 0x1f18, 0x34a0,
584 0xb100, 0x1f68, 0x3360, 0xb0e0, 0x1fa8, 0x3240,
585 0xb0c0, 0x1fe0, 0x3140, 0xb060, 0x1ff0, 0x30a0,
586 0x3000, 0x0800, 0x3000
587 };
588
589 static void update_polyphase_filter(struct overlay_registers __iomem *regs)
590 {
591 memcpy_toio(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs));
592 memcpy_toio(regs->UV_HCOEFS, uv_static_hcoeffs,
593 sizeof(uv_static_hcoeffs));
594 }
595
596 static bool update_scaling_factors(struct intel_overlay *overlay,
597 struct overlay_registers __iomem *regs,
598 struct put_image_params *params)
599 {
600 /* fixed point with a 12 bit shift */
601 u32 xscale, yscale, xscale_UV, yscale_UV;
602 #define FP_SHIFT 12
603 #define FRACT_MASK 0xfff
604 bool scale_changed = false;
605 int uv_hscale = uv_hsubsampling(params->format);
606 int uv_vscale = uv_vsubsampling(params->format);
607
608 if (params->dst_w > 1)
609 xscale = ((params->src_scan_w - 1) << FP_SHIFT)
610 /(params->dst_w);
611 else
612 xscale = 1 << FP_SHIFT;
613
614 if (params->dst_h > 1)
615 yscale = ((params->src_scan_h - 1) << FP_SHIFT)
616 /(params->dst_h);
617 else
618 yscale = 1 << FP_SHIFT;
619
620 /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/
621 xscale_UV = xscale/uv_hscale;
622 yscale_UV = yscale/uv_vscale;
623 /* make the Y scale to UV scale ratio an exact multiply */
624 xscale = xscale_UV * uv_hscale;
625 yscale = yscale_UV * uv_vscale;
626 /*} else {
627 xscale_UV = 0;
628 yscale_UV = 0;
629 }*/
630
631 if (xscale != overlay->old_xscale || yscale != overlay->old_yscale)
632 scale_changed = true;
633 overlay->old_xscale = xscale;
634 overlay->old_yscale = yscale;
635
636 iowrite32(((yscale & FRACT_MASK) << 20) |
637 ((xscale >> FP_SHIFT) << 16) |
638 ((xscale & FRACT_MASK) << 3),
639 &regs->YRGBSCALE);
640
641 iowrite32(((yscale_UV & FRACT_MASK) << 20) |
642 ((xscale_UV >> FP_SHIFT) << 16) |
643 ((xscale_UV & FRACT_MASK) << 3),
644 &regs->UVSCALE);
645
646 iowrite32((((yscale >> FP_SHIFT) << 16) |
647 ((yscale_UV >> FP_SHIFT) << 0)),
648 &regs->UVSCALEV);
649
650 if (scale_changed)
651 update_polyphase_filter(regs);
652
653 return scale_changed;
654 }
655
656 static void update_colorkey(struct intel_overlay *overlay,
657 struct overlay_registers __iomem *regs)
658 {
659 u32 key = overlay->color_key;
660 u32 flags;
661
662 flags = 0;
663 if (overlay->color_key_enabled)
664 flags |= DST_KEY_ENABLE;
665
666 switch (overlay->crtc->base.primary->fb->bits_per_pixel) {
667 case 8:
668 key = 0;
669 flags |= CLK_RGB8I_MASK;
670 break;
671
672 case 16:
673 if (overlay->crtc->base.primary->fb->depth == 15) {
674 key = RGB15_TO_COLORKEY(key);
675 flags |= CLK_RGB15_MASK;
676 } else {
677 key = RGB16_TO_COLORKEY(key);
678 flags |= CLK_RGB16_MASK;
679 }
680 break;
681
682 case 24:
683 case 32:
684 flags |= CLK_RGB24_MASK;
685 break;
686 }
687
688 iowrite32(key, &regs->DCLRKV);
689 iowrite32(flags, &regs->DCLRKM);
690 }
691
692 static u32 overlay_cmd_reg(struct put_image_params *params)
693 {
694 u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0;
695
696 if (params->format & I915_OVERLAY_YUV_PLANAR) {
697 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
698 case I915_OVERLAY_YUV422:
699 cmd |= OCMD_YUV_422_PLANAR;
700 break;
701 case I915_OVERLAY_YUV420:
702 cmd |= OCMD_YUV_420_PLANAR;
703 break;
704 case I915_OVERLAY_YUV411:
705 case I915_OVERLAY_YUV410:
706 cmd |= OCMD_YUV_410_PLANAR;
707 break;
708 }
709 } else { /* YUV packed */
710 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
711 case I915_OVERLAY_YUV422:
712 cmd |= OCMD_YUV_422_PACKED;
713 break;
714 case I915_OVERLAY_YUV411:
715 cmd |= OCMD_YUV_411_PACKED;
716 break;
717 }
718
719 switch (params->format & I915_OVERLAY_SWAP_MASK) {
720 case I915_OVERLAY_NO_SWAP:
721 break;
722 case I915_OVERLAY_UV_SWAP:
723 cmd |= OCMD_UV_SWAP;
724 break;
725 case I915_OVERLAY_Y_SWAP:
726 cmd |= OCMD_Y_SWAP;
727 break;
728 case I915_OVERLAY_Y_AND_UV_SWAP:
729 cmd |= OCMD_Y_AND_UV_SWAP;
730 break;
731 }
732 }
733
734 return cmd;
735 }
736
737 static int intel_overlay_do_put_image(struct intel_overlay *overlay,
738 struct drm_i915_gem_object *new_bo,
739 struct put_image_params *params)
740 {
741 int ret, tmp_width;
742 struct overlay_registers __iomem *regs;
743 bool scale_changed = false;
744 struct drm_device *dev = overlay->dev;
745 u32 swidth, swidthsw, sheight, ostride;
746 enum pipe pipe = overlay->crtc->pipe;
747
748 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
749 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
750
751 ret = intel_overlay_release_old_vid(overlay);
752 if (ret != 0)
753 return ret;
754
755 ret = i915_gem_object_pin_to_display_plane(new_bo, 0,
756 &i915_ggtt_view_normal);
757 if (ret != 0)
758 return ret;
759
760 ret = i915_gem_object_put_fence(new_bo);
761 if (ret)
762 goto out_unpin;
763
764 if (!overlay->active) {
765 u32 oconfig;
766 regs = intel_overlay_map_regs(overlay);
767 if (!regs) {
768 ret = -ENOMEM;
769 goto out_unpin;
770 }
771 oconfig = OCONF_CC_OUT_8BIT;
772 if (IS_GEN4(overlay->dev))
773 oconfig |= OCONF_CSC_MODE_BT709;
774 oconfig |= pipe == 0 ?
775 OCONF_PIPE_A : OCONF_PIPE_B;
776 iowrite32(oconfig, &regs->OCONFIG);
777 intel_overlay_unmap_regs(overlay, regs);
778
779 ret = intel_overlay_on(overlay);
780 if (ret != 0)
781 goto out_unpin;
782 }
783
784 regs = intel_overlay_map_regs(overlay);
785 if (!regs) {
786 ret = -ENOMEM;
787 goto out_unpin;
788 }
789
790 iowrite32((params->dst_y << 16) | params->dst_x, &regs->DWINPOS);
791 iowrite32((params->dst_h << 16) | params->dst_w, &regs->DWINSZ);
792
793 if (params->format & I915_OVERLAY_YUV_PACKED)
794 tmp_width = packed_width_bytes(params->format, params->src_w);
795 else
796 tmp_width = params->src_w;
797
798 swidth = params->src_w;
799 swidthsw = calc_swidthsw(overlay->dev, params->offset_Y, tmp_width);
800 sheight = params->src_h;
801 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_Y, &regs->OBUF_0Y);
802 ostride = params->stride_Y;
803
804 if (params->format & I915_OVERLAY_YUV_PLANAR) {
805 int uv_hscale = uv_hsubsampling(params->format);
806 int uv_vscale = uv_vsubsampling(params->format);
807 u32 tmp_U, tmp_V;
808 swidth |= (params->src_w/uv_hscale) << 16;
809 tmp_U = calc_swidthsw(overlay->dev, params->offset_U,
810 params->src_w/uv_hscale);
811 tmp_V = calc_swidthsw(overlay->dev, params->offset_V,
812 params->src_w/uv_hscale);
813 swidthsw |= max_t(u32, tmp_U, tmp_V) << 16;
814 sheight |= (params->src_h/uv_vscale) << 16;
815 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_U, &regs->OBUF_0U);
816 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_V, &regs->OBUF_0V);
817 ostride |= params->stride_UV << 16;
818 }
819
820 iowrite32(swidth, &regs->SWIDTH);
821 iowrite32(swidthsw, &regs->SWIDTHSW);
822 iowrite32(sheight, &regs->SHEIGHT);
823 iowrite32(ostride, &regs->OSTRIDE);
824
825 scale_changed = update_scaling_factors(overlay, regs, params);
826
827 update_colorkey(overlay, regs);
828
829 iowrite32(overlay_cmd_reg(params), &regs->OCMD);
830
831 intel_overlay_unmap_regs(overlay, regs);
832
833 ret = intel_overlay_continue(overlay, scale_changed);
834 if (ret)
835 goto out_unpin;
836
837 i915_gem_track_fb(overlay->vid_bo, new_bo,
838 INTEL_FRONTBUFFER_OVERLAY(pipe));
839
840 overlay->old_vid_bo = overlay->vid_bo;
841 overlay->vid_bo = new_bo;
842
843 intel_frontbuffer_flip(dev,
844 INTEL_FRONTBUFFER_OVERLAY(pipe));
845
846 return 0;
847
848 out_unpin:
849 i915_gem_object_ggtt_unpin(new_bo);
850 return ret;
851 }
852
853 int intel_overlay_switch_off(struct intel_overlay *overlay)
854 {
855 struct overlay_registers __iomem *regs;
856 struct drm_device *dev = overlay->dev;
857 int ret;
858
859 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
860 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
861
862 ret = intel_overlay_recover_from_interrupt(overlay);
863 if (ret != 0)
864 return ret;
865
866 if (!overlay->active)
867 return 0;
868
869 ret = intel_overlay_release_old_vid(overlay);
870 if (ret != 0)
871 return ret;
872
873 regs = intel_overlay_map_regs(overlay);
874 iowrite32(0, &regs->OCMD);
875 intel_overlay_unmap_regs(overlay, regs);
876
877 ret = intel_overlay_off(overlay);
878 if (ret != 0)
879 return ret;
880
881 intel_overlay_off_tail(overlay);
882 return 0;
883 }
884
885 static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
886 struct intel_crtc *crtc)
887 {
888 if (!crtc->active)
889 return -EINVAL;
890
891 /* can't use the overlay with double wide pipe */
892 if (crtc->config->double_wide)
893 return -EINVAL;
894
895 return 0;
896 }
897
898 static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
899 {
900 struct drm_device *dev = overlay->dev;
901 struct drm_i915_private *dev_priv = dev->dev_private;
902 u32 pfit_control = I915_READ(PFIT_CONTROL);
903 u32 ratio;
904
905 /* XXX: This is not the same logic as in the xorg driver, but more in
906 * line with the intel documentation for the i965
907 */
908 if (INTEL_INFO(dev)->gen >= 4) {
909 /* on i965 use the PGM reg to read out the autoscaler values */
910 ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
911 } else {
912 if (pfit_control & VERT_AUTO_SCALE)
913 ratio = I915_READ(PFIT_AUTO_RATIOS);
914 else
915 ratio = I915_READ(PFIT_PGM_RATIOS);
916 ratio >>= PFIT_VERT_SCALE_SHIFT;
917 }
918
919 overlay->pfit_vscale_ratio = ratio;
920 }
921
922 static int check_overlay_dst(struct intel_overlay *overlay,
923 struct drm_intel_overlay_put_image *rec)
924 {
925 struct drm_display_mode *mode = &overlay->crtc->base.mode;
926
927 if (rec->dst_x < mode->hdisplay &&
928 rec->dst_x + rec->dst_width <= mode->hdisplay &&
929 rec->dst_y < mode->vdisplay &&
930 rec->dst_y + rec->dst_height <= mode->vdisplay)
931 return 0;
932 else
933 return -EINVAL;
934 }
935
936 static int check_overlay_scaling(struct put_image_params *rec)
937 {
938 u32 tmp;
939
940 /* downscaling limit is 8.0 */
941 tmp = ((rec->src_scan_h << 16) / rec->dst_h) >> 16;
942 if (tmp > 7)
943 return -EINVAL;
944 tmp = ((rec->src_scan_w << 16) / rec->dst_w) >> 16;
945 if (tmp > 7)
946 return -EINVAL;
947
948 return 0;
949 }
950
951 static int check_overlay_src(struct drm_device *dev,
952 struct drm_intel_overlay_put_image *rec,
953 struct drm_i915_gem_object *new_bo)
954 {
955 int uv_hscale = uv_hsubsampling(rec->flags);
956 int uv_vscale = uv_vsubsampling(rec->flags);
957 u32 stride_mask;
958 int depth;
959 u32 tmp;
960
961 /* check src dimensions */
962 if (IS_845G(dev) || IS_I830(dev)) {
963 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
964 rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
965 return -EINVAL;
966 } else {
967 if (rec->src_height > IMAGE_MAX_HEIGHT ||
968 rec->src_width > IMAGE_MAX_WIDTH)
969 return -EINVAL;
970 }
971
972 /* better safe than sorry, use 4 as the maximal subsampling ratio */
973 if (rec->src_height < N_VERT_Y_TAPS*4 ||
974 rec->src_width < N_HORIZ_Y_TAPS*4)
975 return -EINVAL;
976
977 /* check alignment constraints */
978 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
979 case I915_OVERLAY_RGB:
980 /* not implemented */
981 return -EINVAL;
982
983 case I915_OVERLAY_YUV_PACKED:
984 if (uv_vscale != 1)
985 return -EINVAL;
986
987 depth = packed_depth_bytes(rec->flags);
988 if (depth < 0)
989 return depth;
990
991 /* ignore UV planes */
992 rec->stride_UV = 0;
993 rec->offset_U = 0;
994 rec->offset_V = 0;
995 /* check pixel alignment */
996 if (rec->offset_Y % depth)
997 return -EINVAL;
998 break;
999
1000 case I915_OVERLAY_YUV_PLANAR:
1001 if (uv_vscale < 0 || uv_hscale < 0)
1002 return -EINVAL;
1003 /* no offset restrictions for planar formats */
1004 break;
1005
1006 default:
1007 return -EINVAL;
1008 }
1009
1010 if (rec->src_width % uv_hscale)
1011 return -EINVAL;
1012
1013 /* stride checking */
1014 if (IS_I830(dev) || IS_845G(dev))
1015 stride_mask = 255;
1016 else
1017 stride_mask = 63;
1018
1019 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
1020 return -EINVAL;
1021 if (IS_GEN4(dev) && rec->stride_Y < 512)
1022 return -EINVAL;
1023
1024 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
1025 4096 : 8192;
1026 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
1027 return -EINVAL;
1028
1029 /* check buffer dimensions */
1030 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
1031 case I915_OVERLAY_RGB:
1032 case I915_OVERLAY_YUV_PACKED:
1033 /* always 4 Y values per depth pixels */
1034 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
1035 return -EINVAL;
1036
1037 tmp = rec->stride_Y*rec->src_height;
1038 if (rec->offset_Y + tmp > new_bo->base.size)
1039 return -EINVAL;
1040 break;
1041
1042 case I915_OVERLAY_YUV_PLANAR:
1043 if (rec->src_width > rec->stride_Y)
1044 return -EINVAL;
1045 if (rec->src_width/uv_hscale > rec->stride_UV)
1046 return -EINVAL;
1047
1048 tmp = rec->stride_Y * rec->src_height;
1049 if (rec->offset_Y + tmp > new_bo->base.size)
1050 return -EINVAL;
1051
1052 tmp = rec->stride_UV * (rec->src_height / uv_vscale);
1053 if (rec->offset_U + tmp > new_bo->base.size ||
1054 rec->offset_V + tmp > new_bo->base.size)
1055 return -EINVAL;
1056 break;
1057 }
1058
1059 return 0;
1060 }
1061
1062 /**
1063 * Return the pipe currently connected to the panel fitter,
1064 * or -1 if the panel fitter is not present or not in use
1065 */
1066 static int intel_panel_fitter_pipe(struct drm_device *dev)
1067 {
1068 struct drm_i915_private *dev_priv = dev->dev_private;
1069 u32 pfit_control;
1070
1071 /* i830 doesn't have a panel fitter */
1072 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
1073 return -1;
1074
1075 pfit_control = I915_READ(PFIT_CONTROL);
1076
1077 /* See if the panel fitter is in use */
1078 if ((pfit_control & PFIT_ENABLE) == 0)
1079 return -1;
1080
1081 /* 965 can place panel fitter on either pipe */
1082 if (IS_GEN4(dev))
1083 return (pfit_control >> 29) & 0x3;
1084
1085 /* older chips can only use pipe 1 */
1086 return 1;
1087 }
1088
1089 int intel_overlay_put_image(struct drm_device *dev, void *data,
1090 struct drm_file *file_priv)
1091 {
1092 struct drm_intel_overlay_put_image *put_image_rec = data;
1093 struct drm_i915_private *dev_priv = dev->dev_private;
1094 struct intel_overlay *overlay;
1095 struct drm_crtc *drmmode_crtc;
1096 struct intel_crtc *crtc;
1097 struct drm_i915_gem_object *new_bo;
1098 struct put_image_params *params;
1099 int ret;
1100
1101 overlay = dev_priv->overlay;
1102 if (!overlay) {
1103 DRM_DEBUG("userspace bug: no overlay\n");
1104 return -ENODEV;
1105 }
1106
1107 if (!(put_image_rec->flags & I915_OVERLAY_ENABLE)) {
1108 drm_modeset_lock_all(dev);
1109 mutex_lock(&dev->struct_mutex);
1110
1111 ret = intel_overlay_switch_off(overlay);
1112
1113 mutex_unlock(&dev->struct_mutex);
1114 drm_modeset_unlock_all(dev);
1115
1116 return ret;
1117 }
1118
1119 params = kmalloc(sizeof(*params), GFP_KERNEL);
1120 if (!params)
1121 return -ENOMEM;
1122
1123 drmmode_crtc = drm_crtc_find(dev, put_image_rec->crtc_id);
1124 if (!drmmode_crtc) {
1125 ret = -ENOENT;
1126 goto out_free;
1127 }
1128 crtc = to_intel_crtc(drmmode_crtc);
1129
1130 new_bo = to_intel_bo(drm_gem_object_lookup(dev, file_priv,
1131 put_image_rec->bo_handle));
1132 if (&new_bo->base == NULL) {
1133 ret = -ENOENT;
1134 goto out_free;
1135 }
1136
1137 drm_modeset_lock_all(dev);
1138 mutex_lock(&dev->struct_mutex);
1139
1140 if (new_bo->tiling_mode) {
1141 DRM_DEBUG_KMS("buffer used for overlay image can not be tiled\n");
1142 ret = -EINVAL;
1143 goto out_unlock;
1144 }
1145
1146 ret = intel_overlay_recover_from_interrupt(overlay);
1147 if (ret != 0)
1148 goto out_unlock;
1149
1150 if (overlay->crtc != crtc) {
1151 struct drm_display_mode *mode = &crtc->base.mode;
1152 ret = intel_overlay_switch_off(overlay);
1153 if (ret != 0)
1154 goto out_unlock;
1155
1156 ret = check_overlay_possible_on_crtc(overlay, crtc);
1157 if (ret != 0)
1158 goto out_unlock;
1159
1160 overlay->crtc = crtc;
1161 crtc->overlay = overlay;
1162
1163 /* line too wide, i.e. one-line-mode */
1164 if (mode->hdisplay > 1024 &&
1165 intel_panel_fitter_pipe(dev) == crtc->pipe) {
1166 overlay->pfit_active = true;
1167 update_pfit_vscale_ratio(overlay);
1168 } else
1169 overlay->pfit_active = false;
1170 }
1171
1172 ret = check_overlay_dst(overlay, put_image_rec);
1173 if (ret != 0)
1174 goto out_unlock;
1175
1176 if (overlay->pfit_active) {
1177 params->dst_y = ((((u32)put_image_rec->dst_y) << 12) /
1178 overlay->pfit_vscale_ratio);
1179 /* shifting right rounds downwards, so add 1 */
1180 params->dst_h = ((((u32)put_image_rec->dst_height) << 12) /
1181 overlay->pfit_vscale_ratio) + 1;
1182 } else {
1183 params->dst_y = put_image_rec->dst_y;
1184 params->dst_h = put_image_rec->dst_height;
1185 }
1186 params->dst_x = put_image_rec->dst_x;
1187 params->dst_w = put_image_rec->dst_width;
1188
1189 params->src_w = put_image_rec->src_width;
1190 params->src_h = put_image_rec->src_height;
1191 params->src_scan_w = put_image_rec->src_scan_width;
1192 params->src_scan_h = put_image_rec->src_scan_height;
1193 if (params->src_scan_h > params->src_h ||
1194 params->src_scan_w > params->src_w) {
1195 ret = -EINVAL;
1196 goto out_unlock;
1197 }
1198
1199 ret = check_overlay_src(dev, put_image_rec, new_bo);
1200 if (ret != 0)
1201 goto out_unlock;
1202 params->format = put_image_rec->flags & ~I915_OVERLAY_FLAGS_MASK;
1203 params->stride_Y = put_image_rec->stride_Y;
1204 params->stride_UV = put_image_rec->stride_UV;
1205 params->offset_Y = put_image_rec->offset_Y;
1206 params->offset_U = put_image_rec->offset_U;
1207 params->offset_V = put_image_rec->offset_V;
1208
1209 /* Check scaling after src size to prevent a divide-by-zero. */
1210 ret = check_overlay_scaling(params);
1211 if (ret != 0)
1212 goto out_unlock;
1213
1214 ret = intel_overlay_do_put_image(overlay, new_bo, params);
1215 if (ret != 0)
1216 goto out_unlock;
1217
1218 mutex_unlock(&dev->struct_mutex);
1219 drm_modeset_unlock_all(dev);
1220
1221 kfree(params);
1222
1223 return 0;
1224
1225 out_unlock:
1226 mutex_unlock(&dev->struct_mutex);
1227 drm_modeset_unlock_all(dev);
1228 drm_gem_object_unreference_unlocked(&new_bo->base);
1229 out_free:
1230 kfree(params);
1231
1232 return ret;
1233 }
1234
1235 static void update_reg_attrs(struct intel_overlay *overlay,
1236 struct overlay_registers __iomem *regs)
1237 {
1238 iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff),
1239 &regs->OCLRC0);
1240 iowrite32(overlay->saturation, &regs->OCLRC1);
1241 }
1242
1243 static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
1244 {
1245 int i;
1246
1247 if (gamma1 & 0xff000000 || gamma2 & 0xff000000)
1248 return false;
1249
1250 for (i = 0; i < 3; i++) {
1251 if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
1252 return false;
1253 }
1254
1255 return true;
1256 }
1257
1258 static bool check_gamma5_errata(u32 gamma5)
1259 {
1260 int i;
1261
1262 for (i = 0; i < 3; i++) {
1263 if (((gamma5 >> i*8) & 0xff) == 0x80)
1264 return false;
1265 }
1266
1267 return true;
1268 }
1269
1270 static int check_gamma(struct drm_intel_overlay_attrs *attrs)
1271 {
1272 if (!check_gamma_bounds(0, attrs->gamma0) ||
1273 !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
1274 !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
1275 !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
1276 !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
1277 !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
1278 !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
1279 return -EINVAL;
1280
1281 if (!check_gamma5_errata(attrs->gamma5))
1282 return -EINVAL;
1283
1284 return 0;
1285 }
1286
1287 int intel_overlay_attrs(struct drm_device *dev, void *data,
1288 struct drm_file *file_priv)
1289 {
1290 struct drm_intel_overlay_attrs *attrs = data;
1291 struct drm_i915_private *dev_priv = dev->dev_private;
1292 struct intel_overlay *overlay;
1293 struct overlay_registers __iomem *regs;
1294 int ret;
1295
1296 overlay = dev_priv->overlay;
1297 if (!overlay) {
1298 DRM_DEBUG("userspace bug: no overlay\n");
1299 return -ENODEV;
1300 }
1301
1302 drm_modeset_lock_all(dev);
1303 mutex_lock(&dev->struct_mutex);
1304
1305 ret = -EINVAL;
1306 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1307 attrs->color_key = overlay->color_key;
1308 attrs->brightness = overlay->brightness;
1309 attrs->contrast = overlay->contrast;
1310 attrs->saturation = overlay->saturation;
1311
1312 if (!IS_GEN2(dev)) {
1313 attrs->gamma0 = I915_READ(OGAMC0);
1314 attrs->gamma1 = I915_READ(OGAMC1);
1315 attrs->gamma2 = I915_READ(OGAMC2);
1316 attrs->gamma3 = I915_READ(OGAMC3);
1317 attrs->gamma4 = I915_READ(OGAMC4);
1318 attrs->gamma5 = I915_READ(OGAMC5);
1319 }
1320 } else {
1321 if (attrs->brightness < -128 || attrs->brightness > 127)
1322 goto out_unlock;
1323 if (attrs->contrast > 255)
1324 goto out_unlock;
1325 if (attrs->saturation > 1023)
1326 goto out_unlock;
1327
1328 overlay->color_key = attrs->color_key;
1329 overlay->brightness = attrs->brightness;
1330 overlay->contrast = attrs->contrast;
1331 overlay->saturation = attrs->saturation;
1332
1333 regs = intel_overlay_map_regs(overlay);
1334 if (!regs) {
1335 ret = -ENOMEM;
1336 goto out_unlock;
1337 }
1338
1339 update_reg_attrs(overlay, regs);
1340
1341 intel_overlay_unmap_regs(overlay, regs);
1342
1343 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1344 if (IS_GEN2(dev))
1345 goto out_unlock;
1346
1347 if (overlay->active) {
1348 ret = -EBUSY;
1349 goto out_unlock;
1350 }
1351
1352 ret = check_gamma(attrs);
1353 if (ret)
1354 goto out_unlock;
1355
1356 I915_WRITE(OGAMC0, attrs->gamma0);
1357 I915_WRITE(OGAMC1, attrs->gamma1);
1358 I915_WRITE(OGAMC2, attrs->gamma2);
1359 I915_WRITE(OGAMC3, attrs->gamma3);
1360 I915_WRITE(OGAMC4, attrs->gamma4);
1361 I915_WRITE(OGAMC5, attrs->gamma5);
1362 }
1363 }
1364 overlay->color_key_enabled = (attrs->flags & I915_OVERLAY_DISABLE_DEST_COLORKEY) == 0;
1365
1366 ret = 0;
1367 out_unlock:
1368 mutex_unlock(&dev->struct_mutex);
1369 drm_modeset_unlock_all(dev);
1370
1371 return ret;
1372 }
1373
1374 void intel_setup_overlay(struct drm_device *dev)
1375 {
1376 struct drm_i915_private *dev_priv = dev->dev_private;
1377 struct intel_overlay *overlay;
1378 struct drm_i915_gem_object *reg_bo;
1379 struct overlay_registers __iomem *regs;
1380 int ret;
1381
1382 if (!HAS_OVERLAY(dev))
1383 return;
1384
1385 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
1386 if (!overlay)
1387 return;
1388
1389 mutex_lock(&dev->struct_mutex);
1390 if (WARN_ON(dev_priv->overlay))
1391 goto out_free;
1392
1393 overlay->dev = dev;
1394
1395 reg_bo = NULL;
1396 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1397 reg_bo = i915_gem_object_create_stolen(dev, PAGE_SIZE);
1398 if (reg_bo == NULL)
1399 reg_bo = i915_gem_alloc_object(dev, PAGE_SIZE);
1400 if (reg_bo == NULL)
1401 goto out_free;
1402 overlay->reg_bo = reg_bo;
1403
1404 if (OVERLAY_NEEDS_PHYSICAL(dev)) {
1405 ret = i915_gem_object_attach_phys(reg_bo, PAGE_SIZE);
1406 if (ret) {
1407 DRM_ERROR("failed to attach phys overlay regs\n");
1408 goto out_free_bo;
1409 }
1410 overlay->flip_addr = reg_bo->phys_handle->busaddr;
1411 } else {
1412 ret = i915_gem_obj_ggtt_pin(reg_bo, PAGE_SIZE, PIN_MAPPABLE);
1413 if (ret) {
1414 DRM_ERROR("failed to pin overlay register bo\n");
1415 goto out_free_bo;
1416 }
1417 overlay->flip_addr = i915_gem_obj_ggtt_offset(reg_bo);
1418
1419 ret = i915_gem_object_set_to_gtt_domain(reg_bo, true);
1420 if (ret) {
1421 DRM_ERROR("failed to move overlay register bo into the GTT\n");
1422 goto out_unpin_bo;
1423 }
1424 }
1425
1426 /* init all values */
1427 overlay->color_key = 0x0101fe;
1428 overlay->color_key_enabled = true;
1429 overlay->brightness = -19;
1430 overlay->contrast = 75;
1431 overlay->saturation = 146;
1432
1433 regs = intel_overlay_map_regs(overlay);
1434 if (!regs)
1435 goto out_unpin_bo;
1436
1437 memset_io(regs, 0, sizeof(struct overlay_registers));
1438 update_polyphase_filter(regs);
1439 update_reg_attrs(overlay, regs);
1440
1441 intel_overlay_unmap_regs(overlay, regs);
1442
1443 dev_priv->overlay = overlay;
1444 mutex_unlock(&dev->struct_mutex);
1445 DRM_INFO("initialized overlay support\n");
1446 return;
1447
1448 out_unpin_bo:
1449 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1450 i915_gem_object_ggtt_unpin(reg_bo);
1451 out_free_bo:
1452 drm_gem_object_unreference(&reg_bo->base);
1453 out_free:
1454 mutex_unlock(&dev->struct_mutex);
1455 kfree(overlay);
1456 return;
1457 }
1458
1459 void intel_cleanup_overlay(struct drm_device *dev)
1460 {
1461 struct drm_i915_private *dev_priv = dev->dev_private;
1462
1463 if (!dev_priv->overlay)
1464 return;
1465
1466 /* The bo's should be free'd by the generic code already.
1467 * Furthermore modesetting teardown happens beforehand so the
1468 * hardware should be off already */
1469 WARN_ON(dev_priv->overlay->active);
1470
1471 drm_gem_object_unreference_unlocked(&dev_priv->overlay->reg_bo->base);
1472 kfree(dev_priv->overlay);
1473 }
1474
1475 struct intel_overlay_error_state {
1476 struct overlay_registers regs;
1477 unsigned long base;
1478 u32 dovsta;
1479 u32 isr;
1480 };
1481
1482 static struct overlay_registers __iomem *
1483 intel_overlay_map_regs_atomic(struct intel_overlay *overlay)
1484 {
1485 struct drm_i915_private *dev_priv = to_i915(overlay->dev);
1486 struct i915_ggtt *ggtt = &dev_priv->ggtt;
1487 struct overlay_registers __iomem *regs;
1488
1489 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1490 /* Cast to make sparse happy, but it's wc memory anyway, so
1491 * equivalent to the wc io mapping on X86. */
1492 regs = (struct overlay_registers __iomem *)
1493 overlay->reg_bo->phys_handle->vaddr;
1494 else
1495 regs = io_mapping_map_atomic_wc(ggtt->mappable,
1496 i915_gem_obj_ggtt_offset(overlay->reg_bo));
1497
1498 return regs;
1499 }
1500
1501 static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay,
1502 struct overlay_registers __iomem *regs)
1503 {
1504 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1505 io_mapping_unmap_atomic(regs);
1506 }
1507
1508
1509 struct intel_overlay_error_state *
1510 intel_overlay_capture_error_state(struct drm_device *dev)
1511 {
1512 struct drm_i915_private *dev_priv = dev->dev_private;
1513 struct intel_overlay *overlay = dev_priv->overlay;
1514 struct intel_overlay_error_state *error;
1515 struct overlay_registers __iomem *regs;
1516
1517 if (!overlay || !overlay->active)
1518 return NULL;
1519
1520 error = kmalloc(sizeof(*error), GFP_ATOMIC);
1521 if (error == NULL)
1522 return NULL;
1523
1524 error->dovsta = I915_READ(DOVSTA);
1525 error->isr = I915_READ(ISR);
1526 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1527 error->base = (__force long)overlay->reg_bo->phys_handle->vaddr;
1528 else
1529 error->base = i915_gem_obj_ggtt_offset(overlay->reg_bo);
1530
1531 regs = intel_overlay_map_regs_atomic(overlay);
1532 if (!regs)
1533 goto err;
1534
1535 memcpy_fromio(&error->regs, regs, sizeof(struct overlay_registers));
1536 intel_overlay_unmap_regs_atomic(overlay, regs);
1537
1538 return error;
1539
1540 err:
1541 kfree(error);
1542 return NULL;
1543 }
1544
1545 void
1546 intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
1547 struct intel_overlay_error_state *error)
1548 {
1549 i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
1550 error->dovsta, error->isr);
1551 i915_error_printf(m, " Register file at 0x%08lx:\n",
1552 error->base);
1553
1554 #define P(x) i915_error_printf(m, " " #x ": 0x%08x\n", error->regs.x)
1555 P(OBUF_0Y);
1556 P(OBUF_1Y);
1557 P(OBUF_0U);
1558 P(OBUF_0V);
1559 P(OBUF_1U);
1560 P(OBUF_1V);
1561 P(OSTRIDE);
1562 P(YRGB_VPH);
1563 P(UV_VPH);
1564 P(HORZ_PH);
1565 P(INIT_PHS);
1566 P(DWINPOS);
1567 P(DWINSZ);
1568 P(SWIDTH);
1569 P(SWIDTHSW);
1570 P(SHEIGHT);
1571 P(YRGBSCALE);
1572 P(UVSCALE);
1573 P(OCLRC0);
1574 P(OCLRC1);
1575 P(DCLRKV);
1576 P(DCLRKM);
1577 P(SCLRKVH);
1578 P(SCLRKVL);
1579 P(SCLRKEN);
1580 P(OCONFIG);
1581 P(OCMD);
1582 P(OSTART_0Y);
1583 P(OSTART_1Y);
1584 P(OSTART_0U);
1585 P(OSTART_0V);
1586 P(OSTART_1U);
1587 P(OSTART_1V);
1588 P(OTILEOFF_0Y);
1589 P(OTILEOFF_1Y);
1590 P(OTILEOFF_0U);
1591 P(OTILEOFF_0V);
1592 P(OTILEOFF_1U);
1593 P(OTILEOFF_1V);
1594 P(FASTHSCALE);
1595 P(UVSCALEV);
1596 #undef P
1597 }
Linux kernel - Deliverables
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