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drm/i915: Abstract the legacy workload submission mechanism away
[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_overlay.c
1 /*
2 * Copyright © 2009
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 * Daniel Vetter <daniel@ffwll.ch>
25 *
26 * Derived from Xorg ddx, xf86-video-intel, src/i830_video.c
27 */
28 #include <drm/drmP.h>
29 #include <drm/i915_drm.h>
30 #include "i915_drv.h"
31 #include "i915_reg.h"
32 #include "intel_drv.h"
33
34 /* Limits for overlay size. According to intel doc, the real limits are:
35 * Y width: 4095, UV width (planar): 2047, Y height: 2047,
36 * UV width (planar): * 1023. But the xorg thinks 2048 for height and width. Use
37 * the mininum of both. */
38 #define IMAGE_MAX_WIDTH 2048
39 #define IMAGE_MAX_HEIGHT 2046 /* 2 * 1023 */
40 /* on 830 and 845 these large limits result in the card hanging */
41 #define IMAGE_MAX_WIDTH_LEGACY 1024
42 #define IMAGE_MAX_HEIGHT_LEGACY 1088
43
44 /* overlay register definitions */
45 /* OCMD register */
46 #define OCMD_TILED_SURFACE (0x1<<19)
47 #define OCMD_MIRROR_MASK (0x3<<17)
48 #define OCMD_MIRROR_MODE (0x3<<17)
49 #define OCMD_MIRROR_HORIZONTAL (0x1<<17)
50 #define OCMD_MIRROR_VERTICAL (0x2<<17)
51 #define OCMD_MIRROR_BOTH (0x3<<17)
52 #define OCMD_BYTEORDER_MASK (0x3<<14) /* zero for YUYV or FOURCC YUY2 */
53 #define OCMD_UV_SWAP (0x1<<14) /* YVYU */
54 #define OCMD_Y_SWAP (0x2<<14) /* UYVY or FOURCC UYVY */
55 #define OCMD_Y_AND_UV_SWAP (0x3<<14) /* VYUY */
56 #define OCMD_SOURCE_FORMAT_MASK (0xf<<10)
57 #define OCMD_RGB_888 (0x1<<10) /* not in i965 Intel docs */
58 #define OCMD_RGB_555 (0x2<<10) /* not in i965 Intel docs */
59 #define OCMD_RGB_565 (0x3<<10) /* not in i965 Intel docs */
60 #define OCMD_YUV_422_PACKED (0x8<<10)
61 #define OCMD_YUV_411_PACKED (0x9<<10) /* not in i965 Intel docs */
62 #define OCMD_YUV_420_PLANAR (0xc<<10)
63 #define OCMD_YUV_422_PLANAR (0xd<<10)
64 #define OCMD_YUV_410_PLANAR (0xe<<10) /* also 411 */
65 #define OCMD_TVSYNCFLIP_PARITY (0x1<<9)
66 #define OCMD_TVSYNCFLIP_ENABLE (0x1<<7)
67 #define OCMD_BUF_TYPE_MASK (0x1<<5)
68 #define OCMD_BUF_TYPE_FRAME (0x0<<5)
69 #define OCMD_BUF_TYPE_FIELD (0x1<<5)
70 #define OCMD_TEST_MODE (0x1<<4)
71 #define OCMD_BUFFER_SELECT (0x3<<2)
72 #define OCMD_BUFFER0 (0x0<<2)
73 #define OCMD_BUFFER1 (0x1<<2)
74 #define OCMD_FIELD_SELECT (0x1<<2)
75 #define OCMD_FIELD0 (0x0<<1)
76 #define OCMD_FIELD1 (0x1<<1)
77 #define OCMD_ENABLE (0x1<<0)
78
79 /* OCONFIG register */
80 #define OCONF_PIPE_MASK (0x1<<18)
81 #define OCONF_PIPE_A (0x0<<18)
82 #define OCONF_PIPE_B (0x1<<18)
83 #define OCONF_GAMMA2_ENABLE (0x1<<16)
84 #define OCONF_CSC_MODE_BT601 (0x0<<5)
85 #define OCONF_CSC_MODE_BT709 (0x1<<5)
86 #define OCONF_CSC_BYPASS (0x1<<4)
87 #define OCONF_CC_OUT_8BIT (0x1<<3)
88 #define OCONF_TEST_MODE (0x1<<2)
89 #define OCONF_THREE_LINE_BUFFER (0x1<<0)
90 #define OCONF_TWO_LINE_BUFFER (0x0<<0)
91
92 /* DCLRKM (dst-key) register */
93 #define DST_KEY_ENABLE (0x1<<31)
94 #define CLK_RGB24_MASK 0x0
95 #define CLK_RGB16_MASK 0x070307
96 #define CLK_RGB15_MASK 0x070707
97 #define CLK_RGB8I_MASK 0xffffff
98
99 #define RGB16_TO_COLORKEY(c) \
100 (((c & 0xF800) << 8) | ((c & 0x07E0) << 5) | ((c & 0x001F) << 3))
101 #define RGB15_TO_COLORKEY(c) \
102 (((c & 0x7c00) << 9) | ((c & 0x03E0) << 6) | ((c & 0x001F) << 3))
103
104 /* overlay flip addr flag */
105 #define OFC_UPDATE 0x1
106
107 /* polyphase filter coefficients */
108 #define N_HORIZ_Y_TAPS 5
109 #define N_VERT_Y_TAPS 3
110 #define N_HORIZ_UV_TAPS 3
111 #define N_VERT_UV_TAPS 3
112 #define N_PHASES 17
113 #define MAX_TAPS 5
114
115 /* memory bufferd overlay registers */
116 struct overlay_registers {
117 u32 OBUF_0Y;
118 u32 OBUF_1Y;
119 u32 OBUF_0U;
120 u32 OBUF_0V;
121 u32 OBUF_1U;
122 u32 OBUF_1V;
123 u32 OSTRIDE;
124 u32 YRGB_VPH;
125 u32 UV_VPH;
126 u32 HORZ_PH;
127 u32 INIT_PHS;
128 u32 DWINPOS;
129 u32 DWINSZ;
130 u32 SWIDTH;
131 u32 SWIDTHSW;
132 u32 SHEIGHT;
133 u32 YRGBSCALE;
134 u32 UVSCALE;
135 u32 OCLRC0;
136 u32 OCLRC1;
137 u32 DCLRKV;
138 u32 DCLRKM;
139 u32 SCLRKVH;
140 u32 SCLRKVL;
141 u32 SCLRKEN;
142 u32 OCONFIG;
143 u32 OCMD;
144 u32 RESERVED1; /* 0x6C */
145 u32 OSTART_0Y;
146 u32 OSTART_1Y;
147 u32 OSTART_0U;
148 u32 OSTART_0V;
149 u32 OSTART_1U;
150 u32 OSTART_1V;
151 u32 OTILEOFF_0Y;
152 u32 OTILEOFF_1Y;
153 u32 OTILEOFF_0U;
154 u32 OTILEOFF_0V;
155 u32 OTILEOFF_1U;
156 u32 OTILEOFF_1V;
157 u32 FASTHSCALE; /* 0xA0 */
158 u32 UVSCALEV; /* 0xA4 */
159 u32 RESERVEDC[(0x200 - 0xA8) / 4]; /* 0xA8 - 0x1FC */
160 u16 Y_VCOEFS[N_VERT_Y_TAPS * N_PHASES]; /* 0x200 */
161 u16 RESERVEDD[0x100 / 2 - N_VERT_Y_TAPS * N_PHASES];
162 u16 Y_HCOEFS[N_HORIZ_Y_TAPS * N_PHASES]; /* 0x300 */
163 u16 RESERVEDE[0x200 / 2 - N_HORIZ_Y_TAPS * N_PHASES];
164 u16 UV_VCOEFS[N_VERT_UV_TAPS * N_PHASES]; /* 0x500 */
165 u16 RESERVEDF[0x100 / 2 - N_VERT_UV_TAPS * N_PHASES];
166 u16 UV_HCOEFS[N_HORIZ_UV_TAPS * N_PHASES]; /* 0x600 */
167 u16 RESERVEDG[0x100 / 2 - N_HORIZ_UV_TAPS * N_PHASES];
168 };
169
170 struct intel_overlay {
171 struct drm_device *dev;
172 struct intel_crtc *crtc;
173 struct drm_i915_gem_object *vid_bo;
174 struct drm_i915_gem_object *old_vid_bo;
175 int active;
176 int pfit_active;
177 u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
178 u32 color_key;
179 u32 brightness, contrast, saturation;
180 u32 old_xscale, old_yscale;
181 /* register access */
182 u32 flip_addr;
183 struct drm_i915_gem_object *reg_bo;
184 /* flip handling */
185 uint32_t 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 ret = i915_add_request(ring, &overlay->last_flip_req);
221 if (ret)
222 return ret;
223
224 overlay->flip_tail = tail;
225 ret = i915_wait_seqno(ring, overlay->last_flip_req);
226 if (ret)
227 return ret;
228 i915_gem_retire_requests(dev);
229
230 overlay->last_flip_req = 0;
231 return 0;
232 }
233
234 /* overlay needs to be disable in OCMD reg */
235 static int intel_overlay_on(struct intel_overlay *overlay)
236 {
237 struct drm_device *dev = overlay->dev;
238 struct drm_i915_private *dev_priv = dev->dev_private;
239 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
240 int ret;
241
242 BUG_ON(overlay->active);
243 overlay->active = 1;
244
245 WARN_ON(IS_I830(dev) && !(dev_priv->quirks & QUIRK_PIPEA_FORCE));
246
247 ret = intel_ring_begin(ring, 4);
248 if (ret)
249 return ret;
250
251 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_ON);
252 intel_ring_emit(ring, overlay->flip_addr | OFC_UPDATE);
253 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
254 intel_ring_emit(ring, MI_NOOP);
255 intel_ring_advance(ring);
256
257 return intel_overlay_do_wait_request(overlay, NULL);
258 }
259
260 /* overlay needs to be enabled in OCMD reg */
261 static int intel_overlay_continue(struct intel_overlay *overlay,
262 bool load_polyphase_filter)
263 {
264 struct drm_device *dev = overlay->dev;
265 struct drm_i915_private *dev_priv = dev->dev_private;
266 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
267 u32 flip_addr = overlay->flip_addr;
268 u32 tmp;
269 int ret;
270
271 BUG_ON(!overlay->active);
272
273 if (load_polyphase_filter)
274 flip_addr |= OFC_UPDATE;
275
276 /* check for underruns */
277 tmp = I915_READ(DOVSTA);
278 if (tmp & (1 << 17))
279 DRM_DEBUG("overlay underrun, DOVSTA: %x\n", tmp);
280
281 ret = intel_ring_begin(ring, 2);
282 if (ret)
283 return ret;
284
285 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
286 intel_ring_emit(ring, flip_addr);
287 intel_ring_advance(ring);
288
289 return i915_add_request(ring, &overlay->last_flip_req);
290 }
291
292 static void intel_overlay_release_old_vid_tail(struct intel_overlay *overlay)
293 {
294 struct drm_i915_gem_object *obj = overlay->old_vid_bo;
295
296 i915_gem_object_ggtt_unpin(obj);
297 drm_gem_object_unreference(&obj->base);
298
299 overlay->old_vid_bo = NULL;
300 }
301
302 static void intel_overlay_off_tail(struct intel_overlay *overlay)
303 {
304 struct drm_i915_gem_object *obj = overlay->vid_bo;
305
306 /* never have the overlay hw on without showing a frame */
307 BUG_ON(!overlay->vid_bo);
308
309 i915_gem_object_ggtt_unpin(obj);
310 drm_gem_object_unreference(&obj->base);
311 overlay->vid_bo = NULL;
312
313 overlay->crtc->overlay = NULL;
314 overlay->crtc = NULL;
315 overlay->active = 0;
316 }
317
318 /* overlay needs to be disabled in OCMD reg */
319 static int intel_overlay_off(struct intel_overlay *overlay)
320 {
321 struct drm_device *dev = overlay->dev;
322 struct drm_i915_private *dev_priv = dev->dev_private;
323 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
324 u32 flip_addr = overlay->flip_addr;
325 int ret;
326
327 BUG_ON(!overlay->active);
328
329 /* According to intel docs the overlay hw may hang (when switching
330 * off) without loading the filter coeffs. It is however unclear whether
331 * this applies to the disabling of the overlay or to the switching off
332 * of the hw. Do it in both cases */
333 flip_addr |= OFC_UPDATE;
334
335 ret = intel_ring_begin(ring, 6);
336 if (ret)
337 return ret;
338
339 /* wait for overlay to go idle */
340 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
341 intel_ring_emit(ring, flip_addr);
342 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
343 /* turn overlay off */
344 if (IS_I830(dev)) {
345 /* Workaround: Don't disable the overlay fully, since otherwise
346 * it dies on the next OVERLAY_ON cmd. */
347 intel_ring_emit(ring, MI_NOOP);
348 intel_ring_emit(ring, MI_NOOP);
349 intel_ring_emit(ring, MI_NOOP);
350 } else {
351 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
352 intel_ring_emit(ring, flip_addr);
353 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
354 }
355 intel_ring_advance(ring);
356
357 return intel_overlay_do_wait_request(overlay, intel_overlay_off_tail);
358 }
359
360 /* recover from an interruption due to a signal
361 * We have to be careful not to repeat work forever an make forward progess. */
362 static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay)
363 {
364 struct drm_device *dev = overlay->dev;
365 struct drm_i915_private *dev_priv = dev->dev_private;
366 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
367 int ret;
368
369 if (overlay->last_flip_req == 0)
370 return 0;
371
372 ret = i915_wait_seqno(ring, overlay->last_flip_req);
373 if (ret)
374 return ret;
375 i915_gem_retire_requests(dev);
376
377 if (overlay->flip_tail)
378 overlay->flip_tail(overlay);
379
380 overlay->last_flip_req = 0;
381 return 0;
382 }
383
384 /* Wait for pending overlay flip and release old frame.
385 * Needs to be called before the overlay register are changed
386 * via intel_overlay_(un)map_regs
387 */
388 static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
389 {
390 struct drm_device *dev = overlay->dev;
391 struct drm_i915_private *dev_priv = dev->dev_private;
392 struct intel_engine_cs *ring = &dev_priv->ring[RCS];
393 int ret;
394
395 /* Only wait if there is actually an old frame to release to
396 * guarantee forward progress.
397 */
398 if (!overlay->old_vid_bo)
399 return 0;
400
401 if (I915_READ(ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT) {
402 /* synchronous slowpath */
403 ret = intel_ring_begin(ring, 2);
404 if (ret)
405 return ret;
406
407 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
408 intel_ring_emit(ring, MI_NOOP);
409 intel_ring_advance(ring);
410
411 ret = intel_overlay_do_wait_request(overlay,
412 intel_overlay_release_old_vid_tail);
413 if (ret)
414 return ret;
415 }
416
417 intel_overlay_release_old_vid_tail(overlay);
418
419
420 i915_gem_track_fb(overlay->old_vid_bo, NULL,
421 INTEL_FRONTBUFFER_OVERLAY(overlay->crtc->pipe));
422 return 0;
423 }
424
425 struct put_image_params {
426 int format;
427 short dst_x;
428 short dst_y;
429 short dst_w;
430 short dst_h;
431 short src_w;
432 short src_scan_h;
433 short src_scan_w;
434 short src_h;
435 short stride_Y;
436 short stride_UV;
437 int offset_Y;
438 int offset_U;
439 int offset_V;
440 };
441
442 static int packed_depth_bytes(u32 format)
443 {
444 switch (format & I915_OVERLAY_DEPTH_MASK) {
445 case I915_OVERLAY_YUV422:
446 return 4;
447 case I915_OVERLAY_YUV411:
448 /* return 6; not implemented */
449 default:
450 return -EINVAL;
451 }
452 }
453
454 static int packed_width_bytes(u32 format, short width)
455 {
456 switch (format & I915_OVERLAY_DEPTH_MASK) {
457 case I915_OVERLAY_YUV422:
458 return width << 1;
459 default:
460 return -EINVAL;
461 }
462 }
463
464 static int uv_hsubsampling(u32 format)
465 {
466 switch (format & I915_OVERLAY_DEPTH_MASK) {
467 case I915_OVERLAY_YUV422:
468 case I915_OVERLAY_YUV420:
469 return 2;
470 case I915_OVERLAY_YUV411:
471 case I915_OVERLAY_YUV410:
472 return 4;
473 default:
474 return -EINVAL;
475 }
476 }
477
478 static int uv_vsubsampling(u32 format)
479 {
480 switch (format & I915_OVERLAY_DEPTH_MASK) {
481 case I915_OVERLAY_YUV420:
482 case I915_OVERLAY_YUV410:
483 return 2;
484 case I915_OVERLAY_YUV422:
485 case I915_OVERLAY_YUV411:
486 return 1;
487 default:
488 return -EINVAL;
489 }
490 }
491
492 static u32 calc_swidthsw(struct drm_device *dev, u32 offset, u32 width)
493 {
494 u32 mask, shift, ret;
495 if (IS_GEN2(dev)) {
496 mask = 0x1f;
497 shift = 5;
498 } else {
499 mask = 0x3f;
500 shift = 6;
501 }
502 ret = ((offset + width + mask) >> shift) - (offset >> shift);
503 if (!IS_GEN2(dev))
504 ret <<= 1;
505 ret -= 1;
506 return ret << 2;
507 }
508
509 static const u16 y_static_hcoeffs[N_HORIZ_Y_TAPS * N_PHASES] = {
510 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0,
511 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440,
512 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0,
513 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380,
514 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320,
515 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0,
516 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260,
517 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200,
518 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0,
519 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160,
520 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120,
521 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0,
522 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0,
523 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060,
524 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040,
525 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020,
526 0xb000, 0x3000, 0x0800, 0x3000, 0xb000
527 };
528
529 static const u16 uv_static_hcoeffs[N_HORIZ_UV_TAPS * N_PHASES] = {
530 0x3000, 0x1800, 0x1800, 0xb000, 0x18d0, 0x2e60,
531 0xb000, 0x1990, 0x2ce0, 0xb020, 0x1a68, 0x2b40,
532 0xb040, 0x1b20, 0x29e0, 0xb060, 0x1bd8, 0x2880,
533 0xb080, 0x1c88, 0x3e60, 0xb0a0, 0x1d28, 0x3c00,
534 0xb0c0, 0x1db8, 0x39e0, 0xb0e0, 0x1e40, 0x37e0,
535 0xb100, 0x1eb8, 0x3620, 0xb100, 0x1f18, 0x34a0,
536 0xb100, 0x1f68, 0x3360, 0xb0e0, 0x1fa8, 0x3240,
537 0xb0c0, 0x1fe0, 0x3140, 0xb060, 0x1ff0, 0x30a0,
538 0x3000, 0x0800, 0x3000
539 };
540
541 static void update_polyphase_filter(struct overlay_registers __iomem *regs)
542 {
543 memcpy_toio(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs));
544 memcpy_toio(regs->UV_HCOEFS, uv_static_hcoeffs,
545 sizeof(uv_static_hcoeffs));
546 }
547
548 static bool update_scaling_factors(struct intel_overlay *overlay,
549 struct overlay_registers __iomem *regs,
550 struct put_image_params *params)
551 {
552 /* fixed point with a 12 bit shift */
553 u32 xscale, yscale, xscale_UV, yscale_UV;
554 #define FP_SHIFT 12
555 #define FRACT_MASK 0xfff
556 bool scale_changed = false;
557 int uv_hscale = uv_hsubsampling(params->format);
558 int uv_vscale = uv_vsubsampling(params->format);
559
560 if (params->dst_w > 1)
561 xscale = ((params->src_scan_w - 1) << FP_SHIFT)
562 /(params->dst_w);
563 else
564 xscale = 1 << FP_SHIFT;
565
566 if (params->dst_h > 1)
567 yscale = ((params->src_scan_h - 1) << FP_SHIFT)
568 /(params->dst_h);
569 else
570 yscale = 1 << FP_SHIFT;
571
572 /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/
573 xscale_UV = xscale/uv_hscale;
574 yscale_UV = yscale/uv_vscale;
575 /* make the Y scale to UV scale ratio an exact multiply */
576 xscale = xscale_UV * uv_hscale;
577 yscale = yscale_UV * uv_vscale;
578 /*} else {
579 xscale_UV = 0;
580 yscale_UV = 0;
581 }*/
582
583 if (xscale != overlay->old_xscale || yscale != overlay->old_yscale)
584 scale_changed = true;
585 overlay->old_xscale = xscale;
586 overlay->old_yscale = yscale;
587
588 iowrite32(((yscale & FRACT_MASK) << 20) |
589 ((xscale >> FP_SHIFT) << 16) |
590 ((xscale & FRACT_MASK) << 3),
591 &regs->YRGBSCALE);
592
593 iowrite32(((yscale_UV & FRACT_MASK) << 20) |
594 ((xscale_UV >> FP_SHIFT) << 16) |
595 ((xscale_UV & FRACT_MASK) << 3),
596 &regs->UVSCALE);
597
598 iowrite32((((yscale >> FP_SHIFT) << 16) |
599 ((yscale_UV >> FP_SHIFT) << 0)),
600 &regs->UVSCALEV);
601
602 if (scale_changed)
603 update_polyphase_filter(regs);
604
605 return scale_changed;
606 }
607
608 static void update_colorkey(struct intel_overlay *overlay,
609 struct overlay_registers __iomem *regs)
610 {
611 u32 key = overlay->color_key;
612
613 switch (overlay->crtc->base.primary->fb->bits_per_pixel) {
614 case 8:
615 iowrite32(0, &regs->DCLRKV);
616 iowrite32(CLK_RGB8I_MASK | DST_KEY_ENABLE, &regs->DCLRKM);
617 break;
618
619 case 16:
620 if (overlay->crtc->base.primary->fb->depth == 15) {
621 iowrite32(RGB15_TO_COLORKEY(key), &regs->DCLRKV);
622 iowrite32(CLK_RGB15_MASK | DST_KEY_ENABLE,
623 &regs->DCLRKM);
624 } else {
625 iowrite32(RGB16_TO_COLORKEY(key), &regs->DCLRKV);
626 iowrite32(CLK_RGB16_MASK | DST_KEY_ENABLE,
627 &regs->DCLRKM);
628 }
629 break;
630
631 case 24:
632 case 32:
633 iowrite32(key, &regs->DCLRKV);
634 iowrite32(CLK_RGB24_MASK | DST_KEY_ENABLE, &regs->DCLRKM);
635 break;
636 }
637 }
638
639 static u32 overlay_cmd_reg(struct put_image_params *params)
640 {
641 u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0;
642
643 if (params->format & I915_OVERLAY_YUV_PLANAR) {
644 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
645 case I915_OVERLAY_YUV422:
646 cmd |= OCMD_YUV_422_PLANAR;
647 break;
648 case I915_OVERLAY_YUV420:
649 cmd |= OCMD_YUV_420_PLANAR;
650 break;
651 case I915_OVERLAY_YUV411:
652 case I915_OVERLAY_YUV410:
653 cmd |= OCMD_YUV_410_PLANAR;
654 break;
655 }
656 } else { /* YUV packed */
657 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
658 case I915_OVERLAY_YUV422:
659 cmd |= OCMD_YUV_422_PACKED;
660 break;
661 case I915_OVERLAY_YUV411:
662 cmd |= OCMD_YUV_411_PACKED;
663 break;
664 }
665
666 switch (params->format & I915_OVERLAY_SWAP_MASK) {
667 case I915_OVERLAY_NO_SWAP:
668 break;
669 case I915_OVERLAY_UV_SWAP:
670 cmd |= OCMD_UV_SWAP;
671 break;
672 case I915_OVERLAY_Y_SWAP:
673 cmd |= OCMD_Y_SWAP;
674 break;
675 case I915_OVERLAY_Y_AND_UV_SWAP:
676 cmd |= OCMD_Y_AND_UV_SWAP;
677 break;
678 }
679 }
680
681 return cmd;
682 }
683
684 static int intel_overlay_do_put_image(struct intel_overlay *overlay,
685 struct drm_i915_gem_object *new_bo,
686 struct put_image_params *params)
687 {
688 int ret, tmp_width;
689 struct overlay_registers __iomem *regs;
690 bool scale_changed = false;
691 struct drm_device *dev = overlay->dev;
692 u32 swidth, swidthsw, sheight, ostride;
693 enum pipe pipe = overlay->crtc->pipe;
694
695 BUG_ON(!mutex_is_locked(&dev->struct_mutex));
696 BUG_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
697 BUG_ON(!overlay);
698
699 ret = intel_overlay_release_old_vid(overlay);
700 if (ret != 0)
701 return ret;
702
703 ret = i915_gem_object_pin_to_display_plane(new_bo, 0, NULL);
704 if (ret != 0)
705 return ret;
706
707 ret = i915_gem_object_put_fence(new_bo);
708 if (ret)
709 goto out_unpin;
710
711 if (!overlay->active) {
712 u32 oconfig;
713 regs = intel_overlay_map_regs(overlay);
714 if (!regs) {
715 ret = -ENOMEM;
716 goto out_unpin;
717 }
718 oconfig = OCONF_CC_OUT_8BIT;
719 if (IS_GEN4(overlay->dev))
720 oconfig |= OCONF_CSC_MODE_BT709;
721 oconfig |= pipe == 0 ?
722 OCONF_PIPE_A : OCONF_PIPE_B;
723 iowrite32(oconfig, &regs->OCONFIG);
724 intel_overlay_unmap_regs(overlay, regs);
725
726 ret = intel_overlay_on(overlay);
727 if (ret != 0)
728 goto out_unpin;
729 }
730
731 regs = intel_overlay_map_regs(overlay);
732 if (!regs) {
733 ret = -ENOMEM;
734 goto out_unpin;
735 }
736
737 iowrite32((params->dst_y << 16) | params->dst_x, &regs->DWINPOS);
738 iowrite32((params->dst_h << 16) | params->dst_w, &regs->DWINSZ);
739
740 if (params->format & I915_OVERLAY_YUV_PACKED)
741 tmp_width = packed_width_bytes(params->format, params->src_w);
742 else
743 tmp_width = params->src_w;
744
745 swidth = params->src_w;
746 swidthsw = calc_swidthsw(overlay->dev, params->offset_Y, tmp_width);
747 sheight = params->src_h;
748 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_Y, &regs->OBUF_0Y);
749 ostride = params->stride_Y;
750
751 if (params->format & I915_OVERLAY_YUV_PLANAR) {
752 int uv_hscale = uv_hsubsampling(params->format);
753 int uv_vscale = uv_vsubsampling(params->format);
754 u32 tmp_U, tmp_V;
755 swidth |= (params->src_w/uv_hscale) << 16;
756 tmp_U = calc_swidthsw(overlay->dev, params->offset_U,
757 params->src_w/uv_hscale);
758 tmp_V = calc_swidthsw(overlay->dev, params->offset_V,
759 params->src_w/uv_hscale);
760 swidthsw |= max_t(u32, tmp_U, tmp_V) << 16;
761 sheight |= (params->src_h/uv_vscale) << 16;
762 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_U, &regs->OBUF_0U);
763 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_V, &regs->OBUF_0V);
764 ostride |= params->stride_UV << 16;
765 }
766
767 iowrite32(swidth, &regs->SWIDTH);
768 iowrite32(swidthsw, &regs->SWIDTHSW);
769 iowrite32(sheight, &regs->SHEIGHT);
770 iowrite32(ostride, &regs->OSTRIDE);
771
772 scale_changed = update_scaling_factors(overlay, regs, params);
773
774 update_colorkey(overlay, regs);
775
776 iowrite32(overlay_cmd_reg(params), &regs->OCMD);
777
778 intel_overlay_unmap_regs(overlay, regs);
779
780 ret = intel_overlay_continue(overlay, scale_changed);
781 if (ret)
782 goto out_unpin;
783
784 i915_gem_track_fb(overlay->vid_bo, new_bo,
785 INTEL_FRONTBUFFER_OVERLAY(pipe));
786
787 overlay->old_vid_bo = overlay->vid_bo;
788 overlay->vid_bo = new_bo;
789
790 intel_frontbuffer_flip(dev,
791 INTEL_FRONTBUFFER_OVERLAY(pipe));
792
793 return 0;
794
795 out_unpin:
796 i915_gem_object_ggtt_unpin(new_bo);
797 return ret;
798 }
799
800 int intel_overlay_switch_off(struct intel_overlay *overlay)
801 {
802 struct overlay_registers __iomem *regs;
803 struct drm_device *dev = overlay->dev;
804 int ret;
805
806 BUG_ON(!mutex_is_locked(&dev->struct_mutex));
807 BUG_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
808
809 ret = intel_overlay_recover_from_interrupt(overlay);
810 if (ret != 0)
811 return ret;
812
813 if (!overlay->active)
814 return 0;
815
816 ret = intel_overlay_release_old_vid(overlay);
817 if (ret != 0)
818 return ret;
819
820 regs = intel_overlay_map_regs(overlay);
821 iowrite32(0, &regs->OCMD);
822 intel_overlay_unmap_regs(overlay, regs);
823
824 ret = intel_overlay_off(overlay);
825 if (ret != 0)
826 return ret;
827
828 intel_overlay_off_tail(overlay);
829 return 0;
830 }
831
832 static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
833 struct intel_crtc *crtc)
834 {
835 if (!crtc->active)
836 return -EINVAL;
837
838 /* can't use the overlay with double wide pipe */
839 if (crtc->config.double_wide)
840 return -EINVAL;
841
842 return 0;
843 }
844
845 static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
846 {
847 struct drm_device *dev = overlay->dev;
848 struct drm_i915_private *dev_priv = dev->dev_private;
849 u32 pfit_control = I915_READ(PFIT_CONTROL);
850 u32 ratio;
851
852 /* XXX: This is not the same logic as in the xorg driver, but more in
853 * line with the intel documentation for the i965
854 */
855 if (INTEL_INFO(dev)->gen >= 4) {
856 /* on i965 use the PGM reg to read out the autoscaler values */
857 ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
858 } else {
859 if (pfit_control & VERT_AUTO_SCALE)
860 ratio = I915_READ(PFIT_AUTO_RATIOS);
861 else
862 ratio = I915_READ(PFIT_PGM_RATIOS);
863 ratio >>= PFIT_VERT_SCALE_SHIFT;
864 }
865
866 overlay->pfit_vscale_ratio = ratio;
867 }
868
869 static int check_overlay_dst(struct intel_overlay *overlay,
870 struct drm_intel_overlay_put_image *rec)
871 {
872 struct drm_display_mode *mode = &overlay->crtc->base.mode;
873
874 if (rec->dst_x < mode->hdisplay &&
875 rec->dst_x + rec->dst_width <= mode->hdisplay &&
876 rec->dst_y < mode->vdisplay &&
877 rec->dst_y + rec->dst_height <= mode->vdisplay)
878 return 0;
879 else
880 return -EINVAL;
881 }
882
883 static int check_overlay_scaling(struct put_image_params *rec)
884 {
885 u32 tmp;
886
887 /* downscaling limit is 8.0 */
888 tmp = ((rec->src_scan_h << 16) / rec->dst_h) >> 16;
889 if (tmp > 7)
890 return -EINVAL;
891 tmp = ((rec->src_scan_w << 16) / rec->dst_w) >> 16;
892 if (tmp > 7)
893 return -EINVAL;
894
895 return 0;
896 }
897
898 static int check_overlay_src(struct drm_device *dev,
899 struct drm_intel_overlay_put_image *rec,
900 struct drm_i915_gem_object *new_bo)
901 {
902 int uv_hscale = uv_hsubsampling(rec->flags);
903 int uv_vscale = uv_vsubsampling(rec->flags);
904 u32 stride_mask;
905 int depth;
906 u32 tmp;
907
908 /* check src dimensions */
909 if (IS_845G(dev) || IS_I830(dev)) {
910 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
911 rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
912 return -EINVAL;
913 } else {
914 if (rec->src_height > IMAGE_MAX_HEIGHT ||
915 rec->src_width > IMAGE_MAX_WIDTH)
916 return -EINVAL;
917 }
918
919 /* better safe than sorry, use 4 as the maximal subsampling ratio */
920 if (rec->src_height < N_VERT_Y_TAPS*4 ||
921 rec->src_width < N_HORIZ_Y_TAPS*4)
922 return -EINVAL;
923
924 /* check alignment constraints */
925 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
926 case I915_OVERLAY_RGB:
927 /* not implemented */
928 return -EINVAL;
929
930 case I915_OVERLAY_YUV_PACKED:
931 if (uv_vscale != 1)
932 return -EINVAL;
933
934 depth = packed_depth_bytes(rec->flags);
935 if (depth < 0)
936 return depth;
937
938 /* ignore UV planes */
939 rec->stride_UV = 0;
940 rec->offset_U = 0;
941 rec->offset_V = 0;
942 /* check pixel alignment */
943 if (rec->offset_Y % depth)
944 return -EINVAL;
945 break;
946
947 case I915_OVERLAY_YUV_PLANAR:
948 if (uv_vscale < 0 || uv_hscale < 0)
949 return -EINVAL;
950 /* no offset restrictions for planar formats */
951 break;
952
953 default:
954 return -EINVAL;
955 }
956
957 if (rec->src_width % uv_hscale)
958 return -EINVAL;
959
960 /* stride checking */
961 if (IS_I830(dev) || IS_845G(dev))
962 stride_mask = 255;
963 else
964 stride_mask = 63;
965
966 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
967 return -EINVAL;
968 if (IS_GEN4(dev) && rec->stride_Y < 512)
969 return -EINVAL;
970
971 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
972 4096 : 8192;
973 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
974 return -EINVAL;
975
976 /* check buffer dimensions */
977 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
978 case I915_OVERLAY_RGB:
979 case I915_OVERLAY_YUV_PACKED:
980 /* always 4 Y values per depth pixels */
981 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
982 return -EINVAL;
983
984 tmp = rec->stride_Y*rec->src_height;
985 if (rec->offset_Y + tmp > new_bo->base.size)
986 return -EINVAL;
987 break;
988
989 case I915_OVERLAY_YUV_PLANAR:
990 if (rec->src_width > rec->stride_Y)
991 return -EINVAL;
992 if (rec->src_width/uv_hscale > rec->stride_UV)
993 return -EINVAL;
994
995 tmp = rec->stride_Y * rec->src_height;
996 if (rec->offset_Y + tmp > new_bo->base.size)
997 return -EINVAL;
998
999 tmp = rec->stride_UV * (rec->src_height / uv_vscale);
1000 if (rec->offset_U + tmp > new_bo->base.size ||
1001 rec->offset_V + tmp > new_bo->base.size)
1002 return -EINVAL;
1003 break;
1004 }
1005
1006 return 0;
1007 }
1008
1009 /**
1010 * Return the pipe currently connected to the panel fitter,
1011 * or -1 if the panel fitter is not present or not in use
1012 */
1013 static int intel_panel_fitter_pipe(struct drm_device *dev)
1014 {
1015 struct drm_i915_private *dev_priv = dev->dev_private;
1016 u32 pfit_control;
1017
1018 /* i830 doesn't have a panel fitter */
1019 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
1020 return -1;
1021
1022 pfit_control = I915_READ(PFIT_CONTROL);
1023
1024 /* See if the panel fitter is in use */
1025 if ((pfit_control & PFIT_ENABLE) == 0)
1026 return -1;
1027
1028 /* 965 can place panel fitter on either pipe */
1029 if (IS_GEN4(dev))
1030 return (pfit_control >> 29) & 0x3;
1031
1032 /* older chips can only use pipe 1 */
1033 return 1;
1034 }
1035
1036 int intel_overlay_put_image(struct drm_device *dev, void *data,
1037 struct drm_file *file_priv)
1038 {
1039 struct drm_intel_overlay_put_image *put_image_rec = data;
1040 struct drm_i915_private *dev_priv = dev->dev_private;
1041 struct intel_overlay *overlay;
1042 struct drm_crtc *drmmode_crtc;
1043 struct intel_crtc *crtc;
1044 struct drm_i915_gem_object *new_bo;
1045 struct put_image_params *params;
1046 int ret;
1047
1048 /* No need to check for DRIVER_MODESET - we don't set it up then. */
1049 overlay = dev_priv->overlay;
1050 if (!overlay) {
1051 DRM_DEBUG("userspace bug: no overlay\n");
1052 return -ENODEV;
1053 }
1054
1055 if (!(put_image_rec->flags & I915_OVERLAY_ENABLE)) {
1056 drm_modeset_lock_all(dev);
1057 mutex_lock(&dev->struct_mutex);
1058
1059 ret = intel_overlay_switch_off(overlay);
1060
1061 mutex_unlock(&dev->struct_mutex);
1062 drm_modeset_unlock_all(dev);
1063
1064 return ret;
1065 }
1066
1067 params = kmalloc(sizeof(*params), GFP_KERNEL);
1068 if (!params)
1069 return -ENOMEM;
1070
1071 drmmode_crtc = drm_crtc_find(dev, put_image_rec->crtc_id);
1072 if (!drmmode_crtc) {
1073 ret = -ENOENT;
1074 goto out_free;
1075 }
1076 crtc = to_intel_crtc(drmmode_crtc);
1077
1078 new_bo = to_intel_bo(drm_gem_object_lookup(dev, file_priv,
1079 put_image_rec->bo_handle));
1080 if (&new_bo->base == NULL) {
1081 ret = -ENOENT;
1082 goto out_free;
1083 }
1084
1085 drm_modeset_lock_all(dev);
1086 mutex_lock(&dev->struct_mutex);
1087
1088 if (new_bo->tiling_mode) {
1089 DRM_DEBUG_KMS("buffer used for overlay image can not be tiled\n");
1090 ret = -EINVAL;
1091 goto out_unlock;
1092 }
1093
1094 ret = intel_overlay_recover_from_interrupt(overlay);
1095 if (ret != 0)
1096 goto out_unlock;
1097
1098 if (overlay->crtc != crtc) {
1099 struct drm_display_mode *mode = &crtc->base.mode;
1100 ret = intel_overlay_switch_off(overlay);
1101 if (ret != 0)
1102 goto out_unlock;
1103
1104 ret = check_overlay_possible_on_crtc(overlay, crtc);
1105 if (ret != 0)
1106 goto out_unlock;
1107
1108 overlay->crtc = crtc;
1109 crtc->overlay = overlay;
1110
1111 /* line too wide, i.e. one-line-mode */
1112 if (mode->hdisplay > 1024 &&
1113 intel_panel_fitter_pipe(dev) == crtc->pipe) {
1114 overlay->pfit_active = 1;
1115 update_pfit_vscale_ratio(overlay);
1116 } else
1117 overlay->pfit_active = 0;
1118 }
1119
1120 ret = check_overlay_dst(overlay, put_image_rec);
1121 if (ret != 0)
1122 goto out_unlock;
1123
1124 if (overlay->pfit_active) {
1125 params->dst_y = ((((u32)put_image_rec->dst_y) << 12) /
1126 overlay->pfit_vscale_ratio);
1127 /* shifting right rounds downwards, so add 1 */
1128 params->dst_h = ((((u32)put_image_rec->dst_height) << 12) /
1129 overlay->pfit_vscale_ratio) + 1;
1130 } else {
1131 params->dst_y = put_image_rec->dst_y;
1132 params->dst_h = put_image_rec->dst_height;
1133 }
1134 params->dst_x = put_image_rec->dst_x;
1135 params->dst_w = put_image_rec->dst_width;
1136
1137 params->src_w = put_image_rec->src_width;
1138 params->src_h = put_image_rec->src_height;
1139 params->src_scan_w = put_image_rec->src_scan_width;
1140 params->src_scan_h = put_image_rec->src_scan_height;
1141 if (params->src_scan_h > params->src_h ||
1142 params->src_scan_w > params->src_w) {
1143 ret = -EINVAL;
1144 goto out_unlock;
1145 }
1146
1147 ret = check_overlay_src(dev, put_image_rec, new_bo);
1148 if (ret != 0)
1149 goto out_unlock;
1150 params->format = put_image_rec->flags & ~I915_OVERLAY_FLAGS_MASK;
1151 params->stride_Y = put_image_rec->stride_Y;
1152 params->stride_UV = put_image_rec->stride_UV;
1153 params->offset_Y = put_image_rec->offset_Y;
1154 params->offset_U = put_image_rec->offset_U;
1155 params->offset_V = put_image_rec->offset_V;
1156
1157 /* Check scaling after src size to prevent a divide-by-zero. */
1158 ret = check_overlay_scaling(params);
1159 if (ret != 0)
1160 goto out_unlock;
1161
1162 ret = intel_overlay_do_put_image(overlay, new_bo, params);
1163 if (ret != 0)
1164 goto out_unlock;
1165
1166 mutex_unlock(&dev->struct_mutex);
1167 drm_modeset_unlock_all(dev);
1168
1169 kfree(params);
1170
1171 return 0;
1172
1173 out_unlock:
1174 mutex_unlock(&dev->struct_mutex);
1175 drm_modeset_unlock_all(dev);
1176 drm_gem_object_unreference_unlocked(&new_bo->base);
1177 out_free:
1178 kfree(params);
1179
1180 return ret;
1181 }
1182
1183 static void update_reg_attrs(struct intel_overlay *overlay,
1184 struct overlay_registers __iomem *regs)
1185 {
1186 iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff),
1187 &regs->OCLRC0);
1188 iowrite32(overlay->saturation, &regs->OCLRC1);
1189 }
1190
1191 static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
1192 {
1193 int i;
1194
1195 if (gamma1 & 0xff000000 || gamma2 & 0xff000000)
1196 return false;
1197
1198 for (i = 0; i < 3; i++) {
1199 if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
1200 return false;
1201 }
1202
1203 return true;
1204 }
1205
1206 static bool check_gamma5_errata(u32 gamma5)
1207 {
1208 int i;
1209
1210 for (i = 0; i < 3; i++) {
1211 if (((gamma5 >> i*8) & 0xff) == 0x80)
1212 return false;
1213 }
1214
1215 return true;
1216 }
1217
1218 static int check_gamma(struct drm_intel_overlay_attrs *attrs)
1219 {
1220 if (!check_gamma_bounds(0, attrs->gamma0) ||
1221 !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
1222 !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
1223 !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
1224 !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
1225 !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
1226 !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
1227 return -EINVAL;
1228
1229 if (!check_gamma5_errata(attrs->gamma5))
1230 return -EINVAL;
1231
1232 return 0;
1233 }
1234
1235 int intel_overlay_attrs(struct drm_device *dev, void *data,
1236 struct drm_file *file_priv)
1237 {
1238 struct drm_intel_overlay_attrs *attrs = data;
1239 struct drm_i915_private *dev_priv = dev->dev_private;
1240 struct intel_overlay *overlay;
1241 struct overlay_registers __iomem *regs;
1242 int ret;
1243
1244 /* No need to check for DRIVER_MODESET - we don't set it up then. */
1245 overlay = dev_priv->overlay;
1246 if (!overlay) {
1247 DRM_DEBUG("userspace bug: no overlay\n");
1248 return -ENODEV;
1249 }
1250
1251 drm_modeset_lock_all(dev);
1252 mutex_lock(&dev->struct_mutex);
1253
1254 ret = -EINVAL;
1255 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1256 attrs->color_key = overlay->color_key;
1257 attrs->brightness = overlay->brightness;
1258 attrs->contrast = overlay->contrast;
1259 attrs->saturation = overlay->saturation;
1260
1261 if (!IS_GEN2(dev)) {
1262 attrs->gamma0 = I915_READ(OGAMC0);
1263 attrs->gamma1 = I915_READ(OGAMC1);
1264 attrs->gamma2 = I915_READ(OGAMC2);
1265 attrs->gamma3 = I915_READ(OGAMC3);
1266 attrs->gamma4 = I915_READ(OGAMC4);
1267 attrs->gamma5 = I915_READ(OGAMC5);
1268 }
1269 } else {
1270 if (attrs->brightness < -128 || attrs->brightness > 127)
1271 goto out_unlock;
1272 if (attrs->contrast > 255)
1273 goto out_unlock;
1274 if (attrs->saturation > 1023)
1275 goto out_unlock;
1276
1277 overlay->color_key = attrs->color_key;
1278 overlay->brightness = attrs->brightness;
1279 overlay->contrast = attrs->contrast;
1280 overlay->saturation = attrs->saturation;
1281
1282 regs = intel_overlay_map_regs(overlay);
1283 if (!regs) {
1284 ret = -ENOMEM;
1285 goto out_unlock;
1286 }
1287
1288 update_reg_attrs(overlay, regs);
1289
1290 intel_overlay_unmap_regs(overlay, regs);
1291
1292 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1293 if (IS_GEN2(dev))
1294 goto out_unlock;
1295
1296 if (overlay->active) {
1297 ret = -EBUSY;
1298 goto out_unlock;
1299 }
1300
1301 ret = check_gamma(attrs);
1302 if (ret)
1303 goto out_unlock;
1304
1305 I915_WRITE(OGAMC0, attrs->gamma0);
1306 I915_WRITE(OGAMC1, attrs->gamma1);
1307 I915_WRITE(OGAMC2, attrs->gamma2);
1308 I915_WRITE(OGAMC3, attrs->gamma3);
1309 I915_WRITE(OGAMC4, attrs->gamma4);
1310 I915_WRITE(OGAMC5, attrs->gamma5);
1311 }
1312 }
1313
1314 ret = 0;
1315 out_unlock:
1316 mutex_unlock(&dev->struct_mutex);
1317 drm_modeset_unlock_all(dev);
1318
1319 return ret;
1320 }
1321
1322 void intel_setup_overlay(struct drm_device *dev)
1323 {
1324 struct drm_i915_private *dev_priv = dev->dev_private;
1325 struct intel_overlay *overlay;
1326 struct drm_i915_gem_object *reg_bo;
1327 struct overlay_registers __iomem *regs;
1328 int ret;
1329
1330 if (!HAS_OVERLAY(dev))
1331 return;
1332
1333 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
1334 if (!overlay)
1335 return;
1336
1337 mutex_lock(&dev->struct_mutex);
1338 if (WARN_ON(dev_priv->overlay))
1339 goto out_free;
1340
1341 overlay->dev = dev;
1342
1343 reg_bo = NULL;
1344 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1345 reg_bo = i915_gem_object_create_stolen(dev, PAGE_SIZE);
1346 if (reg_bo == NULL)
1347 reg_bo = i915_gem_alloc_object(dev, PAGE_SIZE);
1348 if (reg_bo == NULL)
1349 goto out_free;
1350 overlay->reg_bo = reg_bo;
1351
1352 if (OVERLAY_NEEDS_PHYSICAL(dev)) {
1353 ret = i915_gem_object_attach_phys(reg_bo, PAGE_SIZE);
1354 if (ret) {
1355 DRM_ERROR("failed to attach phys overlay regs\n");
1356 goto out_free_bo;
1357 }
1358 overlay->flip_addr = reg_bo->phys_handle->busaddr;
1359 } else {
1360 ret = i915_gem_obj_ggtt_pin(reg_bo, PAGE_SIZE, PIN_MAPPABLE);
1361 if (ret) {
1362 DRM_ERROR("failed to pin overlay register bo\n");
1363 goto out_free_bo;
1364 }
1365 overlay->flip_addr = i915_gem_obj_ggtt_offset(reg_bo);
1366
1367 ret = i915_gem_object_set_to_gtt_domain(reg_bo, true);
1368 if (ret) {
1369 DRM_ERROR("failed to move overlay register bo into the GTT\n");
1370 goto out_unpin_bo;
1371 }
1372 }
1373
1374 /* init all values */
1375 overlay->color_key = 0x0101fe;
1376 overlay->brightness = -19;
1377 overlay->contrast = 75;
1378 overlay->saturation = 146;
1379
1380 regs = intel_overlay_map_regs(overlay);
1381 if (!regs)
1382 goto out_unpin_bo;
1383
1384 memset_io(regs, 0, sizeof(struct overlay_registers));
1385 update_polyphase_filter(regs);
1386 update_reg_attrs(overlay, regs);
1387
1388 intel_overlay_unmap_regs(overlay, regs);
1389
1390 dev_priv->overlay = overlay;
1391 mutex_unlock(&dev->struct_mutex);
1392 DRM_INFO("initialized overlay support\n");
1393 return;
1394
1395 out_unpin_bo:
1396 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1397 i915_gem_object_ggtt_unpin(reg_bo);
1398 out_free_bo:
1399 drm_gem_object_unreference(&reg_bo->base);
1400 out_free:
1401 mutex_unlock(&dev->struct_mutex);
1402 kfree(overlay);
1403 return;
1404 }
1405
1406 void intel_cleanup_overlay(struct drm_device *dev)
1407 {
1408 struct drm_i915_private *dev_priv = dev->dev_private;
1409
1410 if (!dev_priv->overlay)
1411 return;
1412
1413 /* The bo's should be free'd by the generic code already.
1414 * Furthermore modesetting teardown happens beforehand so the
1415 * hardware should be off already */
1416 BUG_ON(dev_priv->overlay->active);
1417
1418 drm_gem_object_unreference_unlocked(&dev_priv->overlay->reg_bo->base);
1419 kfree(dev_priv->overlay);
1420 }
1421
1422 struct intel_overlay_error_state {
1423 struct overlay_registers regs;
1424 unsigned long base;
1425 u32 dovsta;
1426 u32 isr;
1427 };
1428
1429 static struct overlay_registers __iomem *
1430 intel_overlay_map_regs_atomic(struct intel_overlay *overlay)
1431 {
1432 struct drm_i915_private *dev_priv = overlay->dev->dev_private;
1433 struct overlay_registers __iomem *regs;
1434
1435 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1436 /* Cast to make sparse happy, but it's wc memory anyway, so
1437 * equivalent to the wc io mapping on X86. */
1438 regs = (struct overlay_registers __iomem *)
1439 overlay->reg_bo->phys_handle->vaddr;
1440 else
1441 regs = io_mapping_map_atomic_wc(dev_priv->gtt.mappable,
1442 i915_gem_obj_ggtt_offset(overlay->reg_bo));
1443
1444 return regs;
1445 }
1446
1447 static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay,
1448 struct overlay_registers __iomem *regs)
1449 {
1450 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1451 io_mapping_unmap_atomic(regs);
1452 }
1453
1454
1455 struct intel_overlay_error_state *
1456 intel_overlay_capture_error_state(struct drm_device *dev)
1457 {
1458 struct drm_i915_private *dev_priv = dev->dev_private;
1459 struct intel_overlay *overlay = dev_priv->overlay;
1460 struct intel_overlay_error_state *error;
1461 struct overlay_registers __iomem *regs;
1462
1463 if (!overlay || !overlay->active)
1464 return NULL;
1465
1466 error = kmalloc(sizeof(*error), GFP_ATOMIC);
1467 if (error == NULL)
1468 return NULL;
1469
1470 error->dovsta = I915_READ(DOVSTA);
1471 error->isr = I915_READ(ISR);
1472 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1473 error->base = (__force long)overlay->reg_bo->phys_handle->vaddr;
1474 else
1475 error->base = i915_gem_obj_ggtt_offset(overlay->reg_bo);
1476
1477 regs = intel_overlay_map_regs_atomic(overlay);
1478 if (!regs)
1479 goto err;
1480
1481 memcpy_fromio(&error->regs, regs, sizeof(struct overlay_registers));
1482 intel_overlay_unmap_regs_atomic(overlay, regs);
1483
1484 return error;
1485
1486 err:
1487 kfree(error);
1488 return NULL;
1489 }
1490
1491 void
1492 intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
1493 struct intel_overlay_error_state *error)
1494 {
1495 i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
1496 error->dovsta, error->isr);
1497 i915_error_printf(m, " Register file at 0x%08lx:\n",
1498 error->base);
1499
1500 #define P(x) i915_error_printf(m, " " #x ": 0x%08x\n", error->regs.x)
1501 P(OBUF_0Y);
1502 P(OBUF_1Y);
1503 P(OBUF_0U);
1504 P(OBUF_0V);
1505 P(OBUF_1U);
1506 P(OBUF_1V);
1507 P(OSTRIDE);
1508 P(YRGB_VPH);
1509 P(UV_VPH);
1510 P(HORZ_PH);
1511 P(INIT_PHS);
1512 P(DWINPOS);
1513 P(DWINSZ);
1514 P(SWIDTH);
1515 P(SWIDTHSW);
1516 P(SHEIGHT);
1517 P(YRGBSCALE);
1518 P(UVSCALE);
1519 P(OCLRC0);
1520 P(OCLRC1);
1521 P(DCLRKV);
1522 P(DCLRKM);
1523 P(SCLRKVH);
1524 P(SCLRKVL);
1525 P(SCLRKEN);
1526 P(OCONFIG);
1527 P(OCMD);
1528 P(OSTART_0Y);
1529 P(OSTART_1Y);
1530 P(OSTART_0U);
1531 P(OSTART_0V);
1532 P(OSTART_1U);
1533 P(OSTART_1V);
1534 P(OTILEOFF_0Y);
1535 P(OTILEOFF_1Y);
1536 P(OTILEOFF_0U);
1537 P(OTILEOFF_0V);
1538 P(OTILEOFF_1U);
1539 P(OTILEOFF_1V);
1540 P(FASTHSCALE);
1541 P(UVSCALEV);
1542 #undef P
1543 }
Linux kernel - Deliverables
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