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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / gpu / drm / i915 / intel_overlay.c
bloba759ecdb7a6ebaddee622ffd5a1d7900fcf5aee3
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 drm_i915_private_t *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_obj->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 drm_i915_private_t *dev_priv = dev->dev_private;
216 struct intel_ring_buffer *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_ring_buffer *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 drm_i915_private_t *dev_priv = dev->dev_private;
266 struct intel_ring_buffer *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_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_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_ring_buffer *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 drm_i915_private_t *dev_priv = dev->dev_private;
366 struct intel_ring_buffer *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 drm_i915_private_t *dev_priv = dev->dev_private;
392 struct intel_ring_buffer *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 return 0;
419 }
420
421 struct put_image_params {
422 int format;
423 short dst_x;
424 short dst_y;
425 short dst_w;
426 short dst_h;
427 short src_w;
428 short src_scan_h;
429 short src_scan_w;
430 short src_h;
431 short stride_Y;
432 short stride_UV;
433 int offset_Y;
434 int offset_U;
435 int offset_V;
436 };
437
438 static int packed_depth_bytes(u32 format)
439 {
440 switch (format & I915_OVERLAY_DEPTH_MASK) {
441 case I915_OVERLAY_YUV422:
442 return 4;
443 case I915_OVERLAY_YUV411:
444 /* return 6; not implemented */
445 default:
446 return -EINVAL;
447 }
448 }
449
450 static int packed_width_bytes(u32 format, short width)
451 {
452 switch (format & I915_OVERLAY_DEPTH_MASK) {
453 case I915_OVERLAY_YUV422:
454 return width << 1;
455 default:
456 return -EINVAL;
457 }
458 }
459
460 static int uv_hsubsampling(u32 format)
461 {
462 switch (format & I915_OVERLAY_DEPTH_MASK) {
463 case I915_OVERLAY_YUV422:
464 case I915_OVERLAY_YUV420:
465 return 2;
466 case I915_OVERLAY_YUV411:
467 case I915_OVERLAY_YUV410:
468 return 4;
469 default:
470 return -EINVAL;
471 }
472 }
473
474 static int uv_vsubsampling(u32 format)
475 {
476 switch (format & I915_OVERLAY_DEPTH_MASK) {
477 case I915_OVERLAY_YUV420:
478 case I915_OVERLAY_YUV410:
479 return 2;
480 case I915_OVERLAY_YUV422:
481 case I915_OVERLAY_YUV411:
482 return 1;
483 default:
484 return -EINVAL;
485 }
486 }
487
488 static u32 calc_swidthsw(struct drm_device *dev, u32 offset, u32 width)
489 {
490 u32 mask, shift, ret;
491 if (IS_GEN2(dev)) {
492 mask = 0x1f;
493 shift = 5;
494 } else {
495 mask = 0x3f;
496 shift = 6;
497 }
498 ret = ((offset + width + mask) >> shift) - (offset >> shift);
499 if (!IS_GEN2(dev))
500 ret <<= 1;
501 ret -= 1;
502 return ret << 2;
503 }
504
505 static const u16 y_static_hcoeffs[N_HORIZ_Y_TAPS * N_PHASES] = {
506 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0,
507 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440,
508 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0,
509 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380,
510 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320,
511 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0,
512 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260,
513 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200,
514 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0,
515 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160,
516 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120,
517 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0,
518 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0,
519 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060,
520 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040,
521 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020,
522 0xb000, 0x3000, 0x0800, 0x3000, 0xb000
523 };
524
525 static const u16 uv_static_hcoeffs[N_HORIZ_UV_TAPS * N_PHASES] = {
526 0x3000, 0x1800, 0x1800, 0xb000, 0x18d0, 0x2e60,
527 0xb000, 0x1990, 0x2ce0, 0xb020, 0x1a68, 0x2b40,
528 0xb040, 0x1b20, 0x29e0, 0xb060, 0x1bd8, 0x2880,
529 0xb080, 0x1c88, 0x3e60, 0xb0a0, 0x1d28, 0x3c00,
530 0xb0c0, 0x1db8, 0x39e0, 0xb0e0, 0x1e40, 0x37e0,
531 0xb100, 0x1eb8, 0x3620, 0xb100, 0x1f18, 0x34a0,
532 0xb100, 0x1f68, 0x3360, 0xb0e0, 0x1fa8, 0x3240,
533 0xb0c0, 0x1fe0, 0x3140, 0xb060, 0x1ff0, 0x30a0,
534 0x3000, 0x0800, 0x3000
535 };
536
537 static void update_polyphase_filter(struct overlay_registers __iomem *regs)
538 {
539 memcpy_toio(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs));
540 memcpy_toio(regs->UV_HCOEFS, uv_static_hcoeffs,
541 sizeof(uv_static_hcoeffs));
542 }
543
544 static bool update_scaling_factors(struct intel_overlay *overlay,
545 struct overlay_registers __iomem *regs,
546 struct put_image_params *params)
547 {
548 /* fixed point with a 12 bit shift */
549 u32 xscale, yscale, xscale_UV, yscale_UV;
550 #define FP_SHIFT 12
551 #define FRACT_MASK 0xfff
552 bool scale_changed = false;
553 int uv_hscale = uv_hsubsampling(params->format);
554 int uv_vscale = uv_vsubsampling(params->format);
555
556 if (params->dst_w > 1)
557 xscale = ((params->src_scan_w - 1) << FP_SHIFT)
558 /(params->dst_w);
559 else
560 xscale = 1 << FP_SHIFT;
561
562 if (params->dst_h > 1)
563 yscale = ((params->src_scan_h - 1) << FP_SHIFT)
564 /(params->dst_h);
565 else
566 yscale = 1 << FP_SHIFT;
567
568 /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/
569 xscale_UV = xscale/uv_hscale;
570 yscale_UV = yscale/uv_vscale;
571 /* make the Y scale to UV scale ratio an exact multiply */
572 xscale = xscale_UV * uv_hscale;
573 yscale = yscale_UV * uv_vscale;
574 /*} else {
575 xscale_UV = 0;
576 yscale_UV = 0;
577 }*/
578
579 if (xscale != overlay->old_xscale || yscale != overlay->old_yscale)
580 scale_changed = true;
581 overlay->old_xscale = xscale;
582 overlay->old_yscale = yscale;
583
584 iowrite32(((yscale & FRACT_MASK) << 20) |
585 ((xscale >> FP_SHIFT) << 16) |
586 ((xscale & FRACT_MASK) << 3),
587 &regs->YRGBSCALE);
588
589 iowrite32(((yscale_UV & FRACT_MASK) << 20) |
590 ((xscale_UV >> FP_SHIFT) << 16) |
591 ((xscale_UV & FRACT_MASK) << 3),
592 &regs->UVSCALE);
593
594 iowrite32((((yscale >> FP_SHIFT) << 16) |
595 ((yscale_UV >> FP_SHIFT) << 0)),
596 &regs->UVSCALEV);
597
598 if (scale_changed)
599 update_polyphase_filter(regs);
600
601 return scale_changed;
602 }
603
604 static void update_colorkey(struct intel_overlay *overlay,
605 struct overlay_registers __iomem *regs)
606 {
607 u32 key = overlay->color_key;
608
609 switch (overlay->crtc->base.fb->bits_per_pixel) {
610 case 8:
611 iowrite32(0, &regs->DCLRKV);
612 iowrite32(CLK_RGB8I_MASK | DST_KEY_ENABLE, &regs->DCLRKM);
613 break;
614
615 case 16:
616 if (overlay->crtc->base.fb->depth == 15) {
617 iowrite32(RGB15_TO_COLORKEY(key), &regs->DCLRKV);
618 iowrite32(CLK_RGB15_MASK | DST_KEY_ENABLE,
619 &regs->DCLRKM);
620 } else {
621 iowrite32(RGB16_TO_COLORKEY(key), &regs->DCLRKV);
622 iowrite32(CLK_RGB16_MASK | DST_KEY_ENABLE,
623 &regs->DCLRKM);
624 }
625 break;
626
627 case 24:
628 case 32:
629 iowrite32(key, &regs->DCLRKV);
630 iowrite32(CLK_RGB24_MASK | DST_KEY_ENABLE, &regs->DCLRKM);
631 break;
632 }
633 }
634
635 static u32 overlay_cmd_reg(struct put_image_params *params)
636 {
637 u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0;
638
639 if (params->format & I915_OVERLAY_YUV_PLANAR) {
640 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
641 case I915_OVERLAY_YUV422:
642 cmd |= OCMD_YUV_422_PLANAR;
643 break;
644 case I915_OVERLAY_YUV420:
645 cmd |= OCMD_YUV_420_PLANAR;
646 break;
647 case I915_OVERLAY_YUV411:
648 case I915_OVERLAY_YUV410:
649 cmd |= OCMD_YUV_410_PLANAR;
650 break;
651 }
652 } else { /* YUV packed */
653 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
654 case I915_OVERLAY_YUV422:
655 cmd |= OCMD_YUV_422_PACKED;
656 break;
657 case I915_OVERLAY_YUV411:
658 cmd |= OCMD_YUV_411_PACKED;
659 break;
660 }
661
662 switch (params->format & I915_OVERLAY_SWAP_MASK) {
663 case I915_OVERLAY_NO_SWAP:
664 break;
665 case I915_OVERLAY_UV_SWAP:
666 cmd |= OCMD_UV_SWAP;
667 break;
668 case I915_OVERLAY_Y_SWAP:
669 cmd |= OCMD_Y_SWAP;
670 break;
671 case I915_OVERLAY_Y_AND_UV_SWAP:
672 cmd |= OCMD_Y_AND_UV_SWAP;
673 break;
674 }
675 }
676
677 return cmd;
678 }
679
680 static int intel_overlay_do_put_image(struct intel_overlay *overlay,
681 struct drm_i915_gem_object *new_bo,
682 struct put_image_params *params)
683 {
684 int ret, tmp_width;
685 struct overlay_registers __iomem *regs;
686 bool scale_changed = false;
687 struct drm_device *dev = overlay->dev;
688 u32 swidth, swidthsw, sheight, ostride;
689
690 BUG_ON(!mutex_is_locked(&dev->struct_mutex));
691 BUG_ON(!mutex_is_locked(&dev->mode_config.mutex));
692 BUG_ON(!overlay);
693
694 ret = intel_overlay_release_old_vid(overlay);
695 if (ret != 0)
696 return ret;
697
698 ret = i915_gem_object_pin_to_display_plane(new_bo, 0, NULL);
699 if (ret != 0)
700 return ret;
701
702 ret = i915_gem_object_put_fence(new_bo);
703 if (ret)
704 goto out_unpin;
705
706 if (!overlay->active) {
707 u32 oconfig;
708 regs = intel_overlay_map_regs(overlay);
709 if (!regs) {
710 ret = -ENOMEM;
711 goto out_unpin;
712 }
713 oconfig = OCONF_CC_OUT_8BIT;
714 if (IS_GEN4(overlay->dev))
715 oconfig |= OCONF_CSC_MODE_BT709;
716 oconfig |= overlay->crtc->pipe == 0 ?
717 OCONF_PIPE_A : OCONF_PIPE_B;
718 iowrite32(oconfig, &regs->OCONFIG);
719 intel_overlay_unmap_regs(overlay, regs);
720
721 ret = intel_overlay_on(overlay);
722 if (ret != 0)
723 goto out_unpin;
724 }
725
726 regs = intel_overlay_map_regs(overlay);
727 if (!regs) {
728 ret = -ENOMEM;
729 goto out_unpin;
730 }
731
732 iowrite32((params->dst_y << 16) | params->dst_x, &regs->DWINPOS);
733 iowrite32((params->dst_h << 16) | params->dst_w, &regs->DWINSZ);
734
735 if (params->format & I915_OVERLAY_YUV_PACKED)
736 tmp_width = packed_width_bytes(params->format, params->src_w);
737 else
738 tmp_width = params->src_w;
739
740 swidth = params->src_w;
741 swidthsw = calc_swidthsw(overlay->dev, params->offset_Y, tmp_width);
742 sheight = params->src_h;
743 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_Y, &regs->OBUF_0Y);
744 ostride = params->stride_Y;
745
746 if (params->format & I915_OVERLAY_YUV_PLANAR) {
747 int uv_hscale = uv_hsubsampling(params->format);
748 int uv_vscale = uv_vsubsampling(params->format);
749 u32 tmp_U, tmp_V;
750 swidth |= (params->src_w/uv_hscale) << 16;
751 tmp_U = calc_swidthsw(overlay->dev, params->offset_U,
752 params->src_w/uv_hscale);
753 tmp_V = calc_swidthsw(overlay->dev, params->offset_V,
754 params->src_w/uv_hscale);
755 swidthsw |= max_t(u32, tmp_U, tmp_V) << 16;
756 sheight |= (params->src_h/uv_vscale) << 16;
757 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_U, &regs->OBUF_0U);
758 iowrite32(i915_gem_obj_ggtt_offset(new_bo) + params->offset_V, &regs->OBUF_0V);
759 ostride |= params->stride_UV << 16;
760 }
761
762 iowrite32(swidth, &regs->SWIDTH);
763 iowrite32(swidthsw, &regs->SWIDTHSW);
764 iowrite32(sheight, &regs->SHEIGHT);
765 iowrite32(ostride, &regs->OSTRIDE);
766
767 scale_changed = update_scaling_factors(overlay, regs, params);
768
769 update_colorkey(overlay, regs);
770
771 iowrite32(overlay_cmd_reg(params), &regs->OCMD);
772
773 intel_overlay_unmap_regs(overlay, regs);
774
775 ret = intel_overlay_continue(overlay, scale_changed);
776 if (ret)
777 goto out_unpin;
778
779 overlay->old_vid_bo = overlay->vid_bo;
780 overlay->vid_bo = new_bo;
781
782 return 0;
783
784 out_unpin:
785 i915_gem_object_unpin(new_bo);
786 return ret;
787 }
788
789 int intel_overlay_switch_off(struct intel_overlay *overlay)
790 {
791 struct overlay_registers __iomem *regs;
792 struct drm_device *dev = overlay->dev;
793 int ret;
794
795 BUG_ON(!mutex_is_locked(&dev->struct_mutex));
796 BUG_ON(!mutex_is_locked(&dev->mode_config.mutex));
797
798 ret = intel_overlay_recover_from_interrupt(overlay);
799 if (ret != 0)
800 return ret;
801
802 if (!overlay->active)
803 return 0;
804
805 ret = intel_overlay_release_old_vid(overlay);
806 if (ret != 0)
807 return ret;
808
809 regs = intel_overlay_map_regs(overlay);
810 iowrite32(0, &regs->OCMD);
811 intel_overlay_unmap_regs(overlay, regs);
812
813 ret = intel_overlay_off(overlay);
814 if (ret != 0)
815 return ret;
816
817 intel_overlay_off_tail(overlay);
818 return 0;
819 }
820
821 static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
822 struct intel_crtc *crtc)
823 {
824 if (!crtc->active)
825 return -EINVAL;
826
827 /* can't use the overlay with double wide pipe */
828 if (crtc->config.double_wide)
829 return -EINVAL;
830
831 return 0;
832 }
833
834 static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
835 {
836 struct drm_device *dev = overlay->dev;
837 drm_i915_private_t *dev_priv = dev->dev_private;
838 u32 pfit_control = I915_READ(PFIT_CONTROL);
839 u32 ratio;
840
841 /* XXX: This is not the same logic as in the xorg driver, but more in
842 * line with the intel documentation for the i965
843 */
844 if (INTEL_INFO(dev)->gen >= 4) {
845 /* on i965 use the PGM reg to read out the autoscaler values */
846 ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
847 } else {
848 if (pfit_control & VERT_AUTO_SCALE)
849 ratio = I915_READ(PFIT_AUTO_RATIOS);
850 else
851 ratio = I915_READ(PFIT_PGM_RATIOS);
852 ratio >>= PFIT_VERT_SCALE_SHIFT;
853 }
854
855 overlay->pfit_vscale_ratio = ratio;
856 }
857
858 static int check_overlay_dst(struct intel_overlay *overlay,
859 struct drm_intel_overlay_put_image *rec)
860 {
861 struct drm_display_mode *mode = &overlay->crtc->base.mode;
862
863 if (rec->dst_x < mode->hdisplay &&
864 rec->dst_x + rec->dst_width <= mode->hdisplay &&
865 rec->dst_y < mode->vdisplay &&
866 rec->dst_y + rec->dst_height <= mode->vdisplay)
867 return 0;
868 else
869 return -EINVAL;
870 }
871
872 static int check_overlay_scaling(struct put_image_params *rec)
873 {
874 u32 tmp;
875
876 /* downscaling limit is 8.0 */
877 tmp = ((rec->src_scan_h << 16) / rec->dst_h) >> 16;
878 if (tmp > 7)
879 return -EINVAL;
880 tmp = ((rec->src_scan_w << 16) / rec->dst_w) >> 16;
881 if (tmp > 7)
882 return -EINVAL;
883
884 return 0;
885 }
886
887 static int check_overlay_src(struct drm_device *dev,
888 struct drm_intel_overlay_put_image *rec,
889 struct drm_i915_gem_object *new_bo)
890 {
891 int uv_hscale = uv_hsubsampling(rec->flags);
892 int uv_vscale = uv_vsubsampling(rec->flags);
893 u32 stride_mask;
894 int depth;
895 u32 tmp;
896
897 /* check src dimensions */
898 if (IS_845G(dev) || IS_I830(dev)) {
899 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
900 rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
901 return -EINVAL;
902 } else {
903 if (rec->src_height > IMAGE_MAX_HEIGHT ||
904 rec->src_width > IMAGE_MAX_WIDTH)
905 return -EINVAL;
906 }
907
908 /* better safe than sorry, use 4 as the maximal subsampling ratio */
909 if (rec->src_height < N_VERT_Y_TAPS*4 ||
910 rec->src_width < N_HORIZ_Y_TAPS*4)
911 return -EINVAL;
912
913 /* check alignment constraints */
914 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
915 case I915_OVERLAY_RGB:
916 /* not implemented */
917 return -EINVAL;
918
919 case I915_OVERLAY_YUV_PACKED:
920 if (uv_vscale != 1)
921 return -EINVAL;
922
923 depth = packed_depth_bytes(rec->flags);
924 if (depth < 0)
925 return depth;
926
927 /* ignore UV planes */
928 rec->stride_UV = 0;
929 rec->offset_U = 0;
930 rec->offset_V = 0;
931 /* check pixel alignment */
932 if (rec->offset_Y % depth)
933 return -EINVAL;
934 break;
935
936 case I915_OVERLAY_YUV_PLANAR:
937 if (uv_vscale < 0 || uv_hscale < 0)
938 return -EINVAL;
939 /* no offset restrictions for planar formats */
940 break;
941
942 default:
943 return -EINVAL;
944 }
945
946 if (rec->src_width % uv_hscale)
947 return -EINVAL;
948
949 /* stride checking */
950 if (IS_I830(dev) || IS_845G(dev))
951 stride_mask = 255;
952 else
953 stride_mask = 63;
954
955 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
956 return -EINVAL;
957 if (IS_GEN4(dev) && rec->stride_Y < 512)
958 return -EINVAL;
959
960 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
961 4096 : 8192;
962 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
963 return -EINVAL;
964
965 /* check buffer dimensions */
966 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
967 case I915_OVERLAY_RGB:
968 case I915_OVERLAY_YUV_PACKED:
969 /* always 4 Y values per depth pixels */
970 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
971 return -EINVAL;
972
973 tmp = rec->stride_Y*rec->src_height;
974 if (rec->offset_Y + tmp > new_bo->base.size)
975 return -EINVAL;
976 break;
977
978 case I915_OVERLAY_YUV_PLANAR:
979 if (rec->src_width > rec->stride_Y)
980 return -EINVAL;
981 if (rec->src_width/uv_hscale > rec->stride_UV)
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
988 tmp = rec->stride_UV * (rec->src_height / uv_vscale);
989 if (rec->offset_U + tmp > new_bo->base.size ||
990 rec->offset_V + tmp > new_bo->base.size)
991 return -EINVAL;
992 break;
993 }
994
995 return 0;
996 }
997
998 /**
999 * Return the pipe currently connected to the panel fitter,
1000 * or -1 if the panel fitter is not present or not in use
1001 */
1002 static int intel_panel_fitter_pipe(struct drm_device *dev)
1003 {
1004 struct drm_i915_private *dev_priv = dev->dev_private;
1005 u32 pfit_control;
1006
1007 /* i830 doesn't have a panel fitter */
1008 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
1009 return -1;
1010
1011 pfit_control = I915_READ(PFIT_CONTROL);
1012
1013 /* See if the panel fitter is in use */
1014 if ((pfit_control & PFIT_ENABLE) == 0)
1015 return -1;
1016
1017 /* 965 can place panel fitter on either pipe */
1018 if (IS_GEN4(dev))
1019 return (pfit_control >> 29) & 0x3;
1020
1021 /* older chips can only use pipe 1 */
1022 return 1;
1023 }
1024
1025 int intel_overlay_put_image(struct drm_device *dev, void *data,
1026 struct drm_file *file_priv)
1027 {
1028 struct drm_intel_overlay_put_image *put_image_rec = data;
1029 drm_i915_private_t *dev_priv = dev->dev_private;
1030 struct intel_overlay *overlay;
1031 struct drm_mode_object *drmmode_obj;
1032 struct intel_crtc *crtc;
1033 struct drm_i915_gem_object *new_bo;
1034 struct put_image_params *params;
1035 int ret;
1036
1037 /* No need to check for DRIVER_MODESET - we don't set it up then. */
1038 overlay = dev_priv->overlay;
1039 if (!overlay) {
1040 DRM_DEBUG("userspace bug: no overlay\n");
1041 return -ENODEV;
1042 }
1043
1044 if (!(put_image_rec->flags & I915_OVERLAY_ENABLE)) {
1045 drm_modeset_lock_all(dev);
1046 mutex_lock(&dev->struct_mutex);
1047
1048 ret = intel_overlay_switch_off(overlay);
1049
1050 mutex_unlock(&dev->struct_mutex);
1051 drm_modeset_unlock_all(dev);
1052
1053 return ret;
1054 }
1055
1056 params = kmalloc(sizeof(*params), GFP_KERNEL);
1057 if (!params)
1058 return -ENOMEM;
1059
1060 drmmode_obj = drm_mode_object_find(dev, put_image_rec->crtc_id,
1061 DRM_MODE_OBJECT_CRTC);
1062 if (!drmmode_obj) {
1063 ret = -ENOENT;
1064 goto out_free;
1065 }
1066 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
1067
1068 new_bo = to_intel_bo(drm_gem_object_lookup(dev, file_priv,
1069 put_image_rec->bo_handle));
1070 if (&new_bo->base == NULL) {
1071 ret = -ENOENT;
1072 goto out_free;
1073 }
1074
1075 drm_modeset_lock_all(dev);
1076 mutex_lock(&dev->struct_mutex);
1077
1078 if (new_bo->tiling_mode) {
1079 DRM_ERROR("buffer used for overlay image can not be tiled\n");
1080 ret = -EINVAL;
1081 goto out_unlock;
1082 }
1083
1084 ret = intel_overlay_recover_from_interrupt(overlay);
1085 if (ret != 0)
1086 goto out_unlock;
1087
1088 if (overlay->crtc != crtc) {
1089 struct drm_display_mode *mode = &crtc->base.mode;
1090 ret = intel_overlay_switch_off(overlay);
1091 if (ret != 0)
1092 goto out_unlock;
1093
1094 ret = check_overlay_possible_on_crtc(overlay, crtc);
1095 if (ret != 0)
1096 goto out_unlock;
1097
1098 overlay->crtc = crtc;
1099 crtc->overlay = overlay;
1100
1101 /* line too wide, i.e. one-line-mode */
1102 if (mode->hdisplay > 1024 &&
1103 intel_panel_fitter_pipe(dev) == crtc->pipe) {
1104 overlay->pfit_active = 1;
1105 update_pfit_vscale_ratio(overlay);
1106 } else
1107 overlay->pfit_active = 0;
1108 }
1109
1110 ret = check_overlay_dst(overlay, put_image_rec);
1111 if (ret != 0)
1112 goto out_unlock;
1113
1114 if (overlay->pfit_active) {
1115 params->dst_y = ((((u32)put_image_rec->dst_y) << 12) /
1116 overlay->pfit_vscale_ratio);
1117 /* shifting right rounds downwards, so add 1 */
1118 params->dst_h = ((((u32)put_image_rec->dst_height) << 12) /
1119 overlay->pfit_vscale_ratio) + 1;
1120 } else {
1121 params->dst_y = put_image_rec->dst_y;
1122 params->dst_h = put_image_rec->dst_height;
1123 }
1124 params->dst_x = put_image_rec->dst_x;
1125 params->dst_w = put_image_rec->dst_width;
1126
1127 params->src_w = put_image_rec->src_width;
1128 params->src_h = put_image_rec->src_height;
1129 params->src_scan_w = put_image_rec->src_scan_width;
1130 params->src_scan_h = put_image_rec->src_scan_height;
1131 if (params->src_scan_h > params->src_h ||
1132 params->src_scan_w > params->src_w) {
1133 ret = -EINVAL;
1134 goto out_unlock;
1135 }
1136
1137 ret = check_overlay_src(dev, put_image_rec, new_bo);
1138 if (ret != 0)
1139 goto out_unlock;
1140 params->format = put_image_rec->flags & ~I915_OVERLAY_FLAGS_MASK;
1141 params->stride_Y = put_image_rec->stride_Y;
1142 params->stride_UV = put_image_rec->stride_UV;
1143 params->offset_Y = put_image_rec->offset_Y;
1144 params->offset_U = put_image_rec->offset_U;
1145 params->offset_V = put_image_rec->offset_V;
1146
1147 /* Check scaling after src size to prevent a divide-by-zero. */
1148 ret = check_overlay_scaling(params);
1149 if (ret != 0)
1150 goto out_unlock;
1151
1152 ret = intel_overlay_do_put_image(overlay, new_bo, params);
1153 if (ret != 0)
1154 goto out_unlock;
1155
1156 mutex_unlock(&dev->struct_mutex);
1157 drm_modeset_unlock_all(dev);
1158
1159 kfree(params);
1160
1161 return 0;
1162
1163 out_unlock:
1164 mutex_unlock(&dev->struct_mutex);
1165 drm_modeset_unlock_all(dev);
1166 drm_gem_object_unreference_unlocked(&new_bo->base);
1167 out_free:
1168 kfree(params);
1169
1170 return ret;
1171 }
1172
1173 static void update_reg_attrs(struct intel_overlay *overlay,
1174 struct overlay_registers __iomem *regs)
1175 {
1176 iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff),
1177 &regs->OCLRC0);
1178 iowrite32(overlay->saturation, &regs->OCLRC1);
1179 }
1180
1181 static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
1182 {
1183 int i;
1184
1185 if (gamma1 & 0xff000000 || gamma2 & 0xff000000)
1186 return false;
1187
1188 for (i = 0; i < 3; i++) {
1189 if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
1190 return false;
1191 }
1192
1193 return true;
1194 }
1195
1196 static bool check_gamma5_errata(u32 gamma5)
1197 {
1198 int i;
1199
1200 for (i = 0; i < 3; i++) {
1201 if (((gamma5 >> i*8) & 0xff) == 0x80)
1202 return false;
1203 }
1204
1205 return true;
1206 }
1207
1208 static int check_gamma(struct drm_intel_overlay_attrs *attrs)
1209 {
1210 if (!check_gamma_bounds(0, attrs->gamma0) ||
1211 !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
1212 !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
1213 !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
1214 !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
1215 !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
1216 !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
1217 return -EINVAL;
1218
1219 if (!check_gamma5_errata(attrs->gamma5))
1220 return -EINVAL;
1221
1222 return 0;
1223 }
1224
1225 int intel_overlay_attrs(struct drm_device *dev, void *data,
1226 struct drm_file *file_priv)
1227 {
1228 struct drm_intel_overlay_attrs *attrs = data;
1229 drm_i915_private_t *dev_priv = dev->dev_private;
1230 struct intel_overlay *overlay;
1231 struct overlay_registers __iomem *regs;
1232 int ret;
1233
1234 /* No need to check for DRIVER_MODESET - we don't set it up then. */
1235 overlay = dev_priv->overlay;
1236 if (!overlay) {
1237 DRM_DEBUG("userspace bug: no overlay\n");
1238 return -ENODEV;
1239 }
1240
1241 drm_modeset_lock_all(dev);
1242 mutex_lock(&dev->struct_mutex);
1243
1244 ret = -EINVAL;
1245 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1246 attrs->color_key = overlay->color_key;
1247 attrs->brightness = overlay->brightness;
1248 attrs->contrast = overlay->contrast;
1249 attrs->saturation = overlay->saturation;
1250
1251 if (!IS_GEN2(dev)) {
1252 attrs->gamma0 = I915_READ(OGAMC0);
1253 attrs->gamma1 = I915_READ(OGAMC1);
1254 attrs->gamma2 = I915_READ(OGAMC2);
1255 attrs->gamma3 = I915_READ(OGAMC3);
1256 attrs->gamma4 = I915_READ(OGAMC4);
1257 attrs->gamma5 = I915_READ(OGAMC5);
1258 }
1259 } else {
1260 if (attrs->brightness < -128 || attrs->brightness > 127)
1261 goto out_unlock;
1262 if (attrs->contrast > 255)
1263 goto out_unlock;
1264 if (attrs->saturation > 1023)
1265 goto out_unlock;
1266
1267 overlay->color_key = attrs->color_key;
1268 overlay->brightness = attrs->brightness;
1269 overlay->contrast = attrs->contrast;
1270 overlay->saturation = attrs->saturation;
1271
1272 regs = intel_overlay_map_regs(overlay);
1273 if (!regs) {
1274 ret = -ENOMEM;
1275 goto out_unlock;
1276 }
1277
1278 update_reg_attrs(overlay, regs);
1279
1280 intel_overlay_unmap_regs(overlay, regs);
1281
1282 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1283 if (IS_GEN2(dev))
1284 goto out_unlock;
1285
1286 if (overlay->active) {
1287 ret = -EBUSY;
1288 goto out_unlock;
1289 }
1290
1291 ret = check_gamma(attrs);
1292 if (ret)
1293 goto out_unlock;
1294
1295 I915_WRITE(OGAMC0, attrs->gamma0);
1296 I915_WRITE(OGAMC1, attrs->gamma1);
1297 I915_WRITE(OGAMC2, attrs->gamma2);
1298 I915_WRITE(OGAMC3, attrs->gamma3);
1299 I915_WRITE(OGAMC4, attrs->gamma4);
1300 I915_WRITE(OGAMC5, attrs->gamma5);
1301 }
1302 }
1303
1304 ret = 0;
1305 out_unlock:
1306 mutex_unlock(&dev->struct_mutex);
1307 drm_modeset_unlock_all(dev);
1308
1309 return ret;
1310 }
1311
1312 void intel_setup_overlay(struct drm_device *dev)
1313 {
1314 drm_i915_private_t *dev_priv = dev->dev_private;
1315 struct intel_overlay *overlay;
1316 struct drm_i915_gem_object *reg_bo;
1317 struct overlay_registers __iomem *regs;
1318 int ret;
1319
1320 if (!HAS_OVERLAY(dev))
1321 return;
1322
1323 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
1324 if (!overlay)
1325 return;
1326
1327 mutex_lock(&dev->struct_mutex);
1328 if (WARN_ON(dev_priv->overlay))
1329 goto out_free;
1330
1331 overlay->dev = dev;
1332
1333 reg_bo = NULL;
1334 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1335 reg_bo = i915_gem_object_create_stolen(dev, PAGE_SIZE);
1336 if (reg_bo == NULL)
1337 reg_bo = i915_gem_alloc_object(dev, PAGE_SIZE);
1338 if (reg_bo == NULL)
1339 goto out_free;
1340 overlay->reg_bo = reg_bo;
1341
1342 if (OVERLAY_NEEDS_PHYSICAL(dev)) {
1343 ret = i915_gem_attach_phys_object(dev, reg_bo,
1344 I915_GEM_PHYS_OVERLAY_REGS,
1345 PAGE_SIZE);
1346 if (ret) {
1347 DRM_ERROR("failed to attach phys overlay regs\n");
1348 goto out_free_bo;
1349 }
1350 overlay->flip_addr = reg_bo->phys_obj->handle->busaddr;
1351 } else {
1352 ret = i915_gem_obj_ggtt_pin(reg_bo, PAGE_SIZE, true, false);
1353 if (ret) {
1354 DRM_ERROR("failed to pin overlay register bo\n");
1355 goto out_free_bo;
1356 }
1357 overlay->flip_addr = i915_gem_obj_ggtt_offset(reg_bo);
1358
1359 ret = i915_gem_object_set_to_gtt_domain(reg_bo, true);
1360 if (ret) {
1361 DRM_ERROR("failed to move overlay register bo into the GTT\n");
1362 goto out_unpin_bo;
1363 }
1364 }
1365
1366 /* init all values */
1367 overlay->color_key = 0x0101fe;
1368 overlay->brightness = -19;
1369 overlay->contrast = 75;
1370 overlay->saturation = 146;
1371
1372 regs = intel_overlay_map_regs(overlay);
1373 if (!regs)
1374 goto out_unpin_bo;
1375
1376 memset_io(regs, 0, sizeof(struct overlay_registers));
1377 update_polyphase_filter(regs);
1378 update_reg_attrs(overlay, regs);
1379
1380 intel_overlay_unmap_regs(overlay, regs);
1381
1382 dev_priv->overlay = overlay;
1383 mutex_unlock(&dev->struct_mutex);
1384 DRM_INFO("initialized overlay support\n");
1385 return;
1386
1387 out_unpin_bo:
1388 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1389 i915_gem_object_unpin(reg_bo);
1390 out_free_bo:
1391 drm_gem_object_unreference(&reg_bo->base);
1392 out_free:
1393 mutex_unlock(&dev->struct_mutex);
1394 kfree(overlay);
1395 return;
1396 }
1397
1398 void intel_cleanup_overlay(struct drm_device *dev)
1399 {
1400 drm_i915_private_t *dev_priv = dev->dev_private;
1401
1402 if (!dev_priv->overlay)
1403 return;
1404
1405 /* The bo's should be free'd by the generic code already.
1406 * Furthermore modesetting teardown happens beforehand so the
1407 * hardware should be off already */
1408 BUG_ON(dev_priv->overlay->active);
1409
1410 drm_gem_object_unreference_unlocked(&dev_priv->overlay->reg_bo->base);
1411 kfree(dev_priv->overlay);
1412 }
1413
1414 struct intel_overlay_error_state {
1415 struct overlay_registers regs;
1416 unsigned long base;
1417 u32 dovsta;
1418 u32 isr;
1419 };
1420
1421 static struct overlay_registers __iomem *
1422 intel_overlay_map_regs_atomic(struct intel_overlay *overlay)
1423 {
1424 drm_i915_private_t *dev_priv = overlay->dev->dev_private;
1425 struct overlay_registers __iomem *regs;
1426
1427 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1428 /* Cast to make sparse happy, but it's wc memory anyway, so
1429 * equivalent to the wc io mapping on X86. */
1430 regs = (struct overlay_registers __iomem *)
1431 overlay->reg_bo->phys_obj->handle->vaddr;
1432 else
1433 regs = io_mapping_map_atomic_wc(dev_priv->gtt.mappable,
1434 i915_gem_obj_ggtt_offset(overlay->reg_bo));
1435
1436 return regs;
1437 }
1438
1439 static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay,
1440 struct overlay_registers __iomem *regs)
1441 {
1442 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1443 io_mapping_unmap_atomic(regs);
1444 }
1445
1446
1447 struct intel_overlay_error_state *
1448 intel_overlay_capture_error_state(struct drm_device *dev)
1449 {
1450 drm_i915_private_t *dev_priv = dev->dev_private;
1451 struct intel_overlay *overlay = dev_priv->overlay;
1452 struct intel_overlay_error_state *error;
1453 struct overlay_registers __iomem *regs;
1454
1455 if (!overlay || !overlay->active)
1456 return NULL;
1457
1458 error = kmalloc(sizeof(*error), GFP_ATOMIC);
1459 if (error == NULL)
1460 return NULL;
1461
1462 error->dovsta = I915_READ(DOVSTA);
1463 error->isr = I915_READ(ISR);
1464 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1465 error->base = (__force long)overlay->reg_bo->phys_obj->handle->vaddr;
1466 else
1467 error->base = i915_gem_obj_ggtt_offset(overlay->reg_bo);
1468
1469 regs = intel_overlay_map_regs_atomic(overlay);
1470 if (!regs)
1471 goto err;
1472
1473 memcpy_fromio(&error->regs, regs, sizeof(struct overlay_registers));
1474 intel_overlay_unmap_regs_atomic(overlay, regs);
1475
1476 return error;
1477
1478 err:
1479 kfree(error);
1480 return NULL;
1481 }
1482
1483 void
1484 intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
1485 struct intel_overlay_error_state *error)
1486 {
1487 i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
1488 error->dovsta, error->isr);
1489 i915_error_printf(m, " Register file at 0x%08lx:\n",
1490 error->base);
1491
1492 #define P(x) i915_error_printf(m, " " #x ": 0x%08x\n", error->regs.x)
1493 P(OBUF_0Y);
1494 P(OBUF_1Y);
1495 P(OBUF_0U);
1496 P(OBUF_0V);
1497 P(OBUF_1U);
1498 P(OBUF_1V);
1499 P(OSTRIDE);
1500 P(YRGB_VPH);
1501 P(UV_VPH);
1502 P(HORZ_PH);
1503 P(INIT_PHS);
1504 P(DWINPOS);
1505 P(DWINSZ);
1506 P(SWIDTH);
1507 P(SWIDTHSW);
1508 P(SHEIGHT);
1509 P(YRGBSCALE);
1510 P(UVSCALE);
1511 P(OCLRC0);
1512 P(OCLRC1);
1513 P(DCLRKV);
1514 P(DCLRKM);
1515 P(SCLRKVH);
1516 P(SCLRKVL);
1517 P(SCLRKEN);
1518 P(OCONFIG);
1519 P(OCMD);
1520 P(OSTART_0Y);
1521 P(OSTART_1Y);
1522 P(OSTART_0U);
1523 P(OSTART_0V);
1524 P(OSTART_1U);
1525 P(OSTART_1V);
1526 P(OTILEOFF_0Y);
1527 P(OTILEOFF_1Y);
1528 P(OTILEOFF_0U);
1529 P(OTILEOFF_0V);
1530 P(OTILEOFF_1U);
1531 P(OTILEOFF_1V);
1532 P(FASTHSCALE);
1533 P(UVSCALEV);
1534 #undef P
1535 }
Linux with added FPC-III support