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drm/i915: avoid big kmallocs on reading error state
[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 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 overlay->reg_bo->gtt_offset);
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, NULL, &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, NULL, &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(new_bo->gtt_offset + 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(new_bo->gtt_offset + params->offset_U, &regs->OBUF_0U);
758 iowrite32(new_bo->gtt_offset + 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 drm_i915_private_t *dev_priv = overlay->dev->dev_private;
825
826 if (!crtc->active)
827 return -EINVAL;
828
829 /* can't use the overlay with double wide pipe */
830 if (INTEL_INFO(overlay->dev)->gen < 4 &&
831 (I915_READ(PIPECONF(crtc->pipe)) & (PIPECONF_DOUBLE_WIDE | PIPECONF_ENABLE)) != PIPECONF_ENABLE)
832 return -EINVAL;
833
834 return 0;
835 }
836
837 static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
838 {
839 struct drm_device *dev = overlay->dev;
840 drm_i915_private_t *dev_priv = dev->dev_private;
841 u32 pfit_control = I915_READ(PFIT_CONTROL);
842 u32 ratio;
843
844 /* XXX: This is not the same logic as in the xorg driver, but more in
845 * line with the intel documentation for the i965
846 */
847 if (INTEL_INFO(dev)->gen >= 4) {
848 /* on i965 use the PGM reg to read out the autoscaler values */
849 ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
850 } else {
851 if (pfit_control & VERT_AUTO_SCALE)
852 ratio = I915_READ(PFIT_AUTO_RATIOS);
853 else
854 ratio = I915_READ(PFIT_PGM_RATIOS);
855 ratio >>= PFIT_VERT_SCALE_SHIFT;
856 }
857
858 overlay->pfit_vscale_ratio = ratio;
859 }
860
861 static int check_overlay_dst(struct intel_overlay *overlay,
862 struct drm_intel_overlay_put_image *rec)
863 {
864 struct drm_display_mode *mode = &overlay->crtc->base.mode;
865
866 if (rec->dst_x < mode->hdisplay &&
867 rec->dst_x + rec->dst_width <= mode->hdisplay &&
868 rec->dst_y < mode->vdisplay &&
869 rec->dst_y + rec->dst_height <= mode->vdisplay)
870 return 0;
871 else
872 return -EINVAL;
873 }
874
875 static int check_overlay_scaling(struct put_image_params *rec)
876 {
877 u32 tmp;
878
879 /* downscaling limit is 8.0 */
880 tmp = ((rec->src_scan_h << 16) / rec->dst_h) >> 16;
881 if (tmp > 7)
882 return -EINVAL;
883 tmp = ((rec->src_scan_w << 16) / rec->dst_w) >> 16;
884 if (tmp > 7)
885 return -EINVAL;
886
887 return 0;
888 }
889
890 static int check_overlay_src(struct drm_device *dev,
891 struct drm_intel_overlay_put_image *rec,
892 struct drm_i915_gem_object *new_bo)
893 {
894 int uv_hscale = uv_hsubsampling(rec->flags);
895 int uv_vscale = uv_vsubsampling(rec->flags);
896 u32 stride_mask;
897 int depth;
898 u32 tmp;
899
900 /* check src dimensions */
901 if (IS_845G(dev) || IS_I830(dev)) {
902 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
903 rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
904 return -EINVAL;
905 } else {
906 if (rec->src_height > IMAGE_MAX_HEIGHT ||
907 rec->src_width > IMAGE_MAX_WIDTH)
908 return -EINVAL;
909 }
910
911 /* better safe than sorry, use 4 as the maximal subsampling ratio */
912 if (rec->src_height < N_VERT_Y_TAPS*4 ||
913 rec->src_width < N_HORIZ_Y_TAPS*4)
914 return -EINVAL;
915
916 /* check alignment constraints */
917 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
918 case I915_OVERLAY_RGB:
919 /* not implemented */
920 return -EINVAL;
921
922 case I915_OVERLAY_YUV_PACKED:
923 if (uv_vscale != 1)
924 return -EINVAL;
925
926 depth = packed_depth_bytes(rec->flags);
927 if (depth < 0)
928 return depth;
929
930 /* ignore UV planes */
931 rec->stride_UV = 0;
932 rec->offset_U = 0;
933 rec->offset_V = 0;
934 /* check pixel alignment */
935 if (rec->offset_Y % depth)
936 return -EINVAL;
937 break;
938
939 case I915_OVERLAY_YUV_PLANAR:
940 if (uv_vscale < 0 || uv_hscale < 0)
941 return -EINVAL;
942 /* no offset restrictions for planar formats */
943 break;
944
945 default:
946 return -EINVAL;
947 }
948
949 if (rec->src_width % uv_hscale)
950 return -EINVAL;
951
952 /* stride checking */
953 if (IS_I830(dev) || IS_845G(dev))
954 stride_mask = 255;
955 else
956 stride_mask = 63;
957
958 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
959 return -EINVAL;
960 if (IS_GEN4(dev) && rec->stride_Y < 512)
961 return -EINVAL;
962
963 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
964 4096 : 8192;
965 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
966 return -EINVAL;
967
968 /* check buffer dimensions */
969 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
970 case I915_OVERLAY_RGB:
971 case I915_OVERLAY_YUV_PACKED:
972 /* always 4 Y values per depth pixels */
973 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
974 return -EINVAL;
975
976 tmp = rec->stride_Y*rec->src_height;
977 if (rec->offset_Y + tmp > new_bo->base.size)
978 return -EINVAL;
979 break;
980
981 case I915_OVERLAY_YUV_PLANAR:
982 if (rec->src_width > rec->stride_Y)
983 return -EINVAL;
984 if (rec->src_width/uv_hscale > rec->stride_UV)
985 return -EINVAL;
986
987 tmp = rec->stride_Y * rec->src_height;
988 if (rec->offset_Y + tmp > new_bo->base.size)
989 return -EINVAL;
990
991 tmp = rec->stride_UV * (rec->src_height / uv_vscale);
992 if (rec->offset_U + tmp > new_bo->base.size ||
993 rec->offset_V + tmp > new_bo->base.size)
994 return -EINVAL;
995 break;
996 }
997
998 return 0;
999 }
1000
1001 /**
1002 * Return the pipe currently connected to the panel fitter,
1003 * or -1 if the panel fitter is not present or not in use
1004 */
1005 static int intel_panel_fitter_pipe(struct drm_device *dev)
1006 {
1007 struct drm_i915_private *dev_priv = dev->dev_private;
1008 u32 pfit_control;
1009
1010 /* i830 doesn't have a panel fitter */
1011 if (IS_I830(dev))
1012 return -1;
1013
1014 pfit_control = I915_READ(PFIT_CONTROL);
1015
1016 /* See if the panel fitter is in use */
1017 if ((pfit_control & PFIT_ENABLE) == 0)
1018 return -1;
1019
1020 /* 965 can place panel fitter on either pipe */
1021 if (IS_GEN4(dev))
1022 return (pfit_control >> 29) & 0x3;
1023
1024 /* older chips can only use pipe 1 */
1025 return 1;
1026 }
1027
1028 int intel_overlay_put_image(struct drm_device *dev, void *data,
1029 struct drm_file *file_priv)
1030 {
1031 struct drm_intel_overlay_put_image *put_image_rec = data;
1032 drm_i915_private_t *dev_priv = dev->dev_private;
1033 struct intel_overlay *overlay;
1034 struct drm_mode_object *drmmode_obj;
1035 struct intel_crtc *crtc;
1036 struct drm_i915_gem_object *new_bo;
1037 struct put_image_params *params;
1038 int ret;
1039
1040 /* No need to check for DRIVER_MODESET - we don't set it up then. */
1041 overlay = dev_priv->overlay;
1042 if (!overlay) {
1043 DRM_DEBUG("userspace bug: no overlay\n");
1044 return -ENODEV;
1045 }
1046
1047 if (!(put_image_rec->flags & I915_OVERLAY_ENABLE)) {
1048 drm_modeset_lock_all(dev);
1049 mutex_lock(&dev->struct_mutex);
1050
1051 ret = intel_overlay_switch_off(overlay);
1052
1053 mutex_unlock(&dev->struct_mutex);
1054 drm_modeset_unlock_all(dev);
1055
1056 return ret;
1057 }
1058
1059 params = kmalloc(sizeof(struct put_image_params), GFP_KERNEL);
1060 if (!params)
1061 return -ENOMEM;
1062
1063 drmmode_obj = drm_mode_object_find(dev, put_image_rec->crtc_id,
1064 DRM_MODE_OBJECT_CRTC);
1065 if (!drmmode_obj) {
1066 ret = -ENOENT;
1067 goto out_free;
1068 }
1069 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
1070
1071 new_bo = to_intel_bo(drm_gem_object_lookup(dev, file_priv,
1072 put_image_rec->bo_handle));
1073 if (&new_bo->base == NULL) {
1074 ret = -ENOENT;
1075 goto out_free;
1076 }
1077
1078 drm_modeset_lock_all(dev);
1079 mutex_lock(&dev->struct_mutex);
1080
1081 if (new_bo->tiling_mode) {
1082 DRM_ERROR("buffer used for overlay image can not be tiled\n");
1083 ret = -EINVAL;
1084 goto out_unlock;
1085 }
1086
1087 ret = intel_overlay_recover_from_interrupt(overlay);
1088 if (ret != 0)
1089 goto out_unlock;
1090
1091 if (overlay->crtc != crtc) {
1092 struct drm_display_mode *mode = &crtc->base.mode;
1093 ret = intel_overlay_switch_off(overlay);
1094 if (ret != 0)
1095 goto out_unlock;
1096
1097 ret = check_overlay_possible_on_crtc(overlay, crtc);
1098 if (ret != 0)
1099 goto out_unlock;
1100
1101 overlay->crtc = crtc;
1102 crtc->overlay = overlay;
1103
1104 /* line too wide, i.e. one-line-mode */
1105 if (mode->hdisplay > 1024 &&
1106 intel_panel_fitter_pipe(dev) == crtc->pipe) {
1107 overlay->pfit_active = 1;
1108 update_pfit_vscale_ratio(overlay);
1109 } else
1110 overlay->pfit_active = 0;
1111 }
1112
1113 ret = check_overlay_dst(overlay, put_image_rec);
1114 if (ret != 0)
1115 goto out_unlock;
1116
1117 if (overlay->pfit_active) {
1118 params->dst_y = ((((u32)put_image_rec->dst_y) << 12) /
1119 overlay->pfit_vscale_ratio);
1120 /* shifting right rounds downwards, so add 1 */
1121 params->dst_h = ((((u32)put_image_rec->dst_height) << 12) /
1122 overlay->pfit_vscale_ratio) + 1;
1123 } else {
1124 params->dst_y = put_image_rec->dst_y;
1125 params->dst_h = put_image_rec->dst_height;
1126 }
1127 params->dst_x = put_image_rec->dst_x;
1128 params->dst_w = put_image_rec->dst_width;
1129
1130 params->src_w = put_image_rec->src_width;
1131 params->src_h = put_image_rec->src_height;
1132 params->src_scan_w = put_image_rec->src_scan_width;
1133 params->src_scan_h = put_image_rec->src_scan_height;
1134 if (params->src_scan_h > params->src_h ||
1135 params->src_scan_w > params->src_w) {
1136 ret = -EINVAL;
1137 goto out_unlock;
1138 }
1139
1140 ret = check_overlay_src(dev, put_image_rec, new_bo);
1141 if (ret != 0)
1142 goto out_unlock;
1143 params->format = put_image_rec->flags & ~I915_OVERLAY_FLAGS_MASK;
1144 params->stride_Y = put_image_rec->stride_Y;
1145 params->stride_UV = put_image_rec->stride_UV;
1146 params->offset_Y = put_image_rec->offset_Y;
1147 params->offset_U = put_image_rec->offset_U;
1148 params->offset_V = put_image_rec->offset_V;
1149
1150 /* Check scaling after src size to prevent a divide-by-zero. */
1151 ret = check_overlay_scaling(params);
1152 if (ret != 0)
1153 goto out_unlock;
1154
1155 ret = intel_overlay_do_put_image(overlay, new_bo, params);
1156 if (ret != 0)
1157 goto out_unlock;
1158
1159 mutex_unlock(&dev->struct_mutex);
1160 drm_modeset_unlock_all(dev);
1161
1162 kfree(params);
1163
1164 return 0;
1165
1166 out_unlock:
1167 mutex_unlock(&dev->struct_mutex);
1168 drm_modeset_unlock_all(dev);
1169 drm_gem_object_unreference_unlocked(&new_bo->base);
1170 out_free:
1171 kfree(params);
1172
1173 return ret;
1174 }
1175
1176 static void update_reg_attrs(struct intel_overlay *overlay,
1177 struct overlay_registers __iomem *regs)
1178 {
1179 iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff),
1180 &regs->OCLRC0);
1181 iowrite32(overlay->saturation, &regs->OCLRC1);
1182 }
1183
1184 static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
1185 {
1186 int i;
1187
1188 if (gamma1 & 0xff000000 || gamma2 & 0xff000000)
1189 return false;
1190
1191 for (i = 0; i < 3; i++) {
1192 if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
1193 return false;
1194 }
1195
1196 return true;
1197 }
1198
1199 static bool check_gamma5_errata(u32 gamma5)
1200 {
1201 int i;
1202
1203 for (i = 0; i < 3; i++) {
1204 if (((gamma5 >> i*8) & 0xff) == 0x80)
1205 return false;
1206 }
1207
1208 return true;
1209 }
1210
1211 static int check_gamma(struct drm_intel_overlay_attrs *attrs)
1212 {
1213 if (!check_gamma_bounds(0, attrs->gamma0) ||
1214 !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
1215 !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
1216 !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
1217 !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
1218 !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
1219 !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
1220 return -EINVAL;
1221
1222 if (!check_gamma5_errata(attrs->gamma5))
1223 return -EINVAL;
1224
1225 return 0;
1226 }
1227
1228 int intel_overlay_attrs(struct drm_device *dev, void *data,
1229 struct drm_file *file_priv)
1230 {
1231 struct drm_intel_overlay_attrs *attrs = data;
1232 drm_i915_private_t *dev_priv = dev->dev_private;
1233 struct intel_overlay *overlay;
1234 struct overlay_registers __iomem *regs;
1235 int ret;
1236
1237 /* No need to check for DRIVER_MODESET - we don't set it up then. */
1238 overlay = dev_priv->overlay;
1239 if (!overlay) {
1240 DRM_DEBUG("userspace bug: no overlay\n");
1241 return -ENODEV;
1242 }
1243
1244 drm_modeset_lock_all(dev);
1245 mutex_lock(&dev->struct_mutex);
1246
1247 ret = -EINVAL;
1248 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1249 attrs->color_key = overlay->color_key;
1250 attrs->brightness = overlay->brightness;
1251 attrs->contrast = overlay->contrast;
1252 attrs->saturation = overlay->saturation;
1253
1254 if (!IS_GEN2(dev)) {
1255 attrs->gamma0 = I915_READ(OGAMC0);
1256 attrs->gamma1 = I915_READ(OGAMC1);
1257 attrs->gamma2 = I915_READ(OGAMC2);
1258 attrs->gamma3 = I915_READ(OGAMC3);
1259 attrs->gamma4 = I915_READ(OGAMC4);
1260 attrs->gamma5 = I915_READ(OGAMC5);
1261 }
1262 } else {
1263 if (attrs->brightness < -128 || attrs->brightness > 127)
1264 goto out_unlock;
1265 if (attrs->contrast > 255)
1266 goto out_unlock;
1267 if (attrs->saturation > 1023)
1268 goto out_unlock;
1269
1270 overlay->color_key = attrs->color_key;
1271 overlay->brightness = attrs->brightness;
1272 overlay->contrast = attrs->contrast;
1273 overlay->saturation = attrs->saturation;
1274
1275 regs = intel_overlay_map_regs(overlay);
1276 if (!regs) {
1277 ret = -ENOMEM;
1278 goto out_unlock;
1279 }
1280
1281 update_reg_attrs(overlay, regs);
1282
1283 intel_overlay_unmap_regs(overlay, regs);
1284
1285 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1286 if (IS_GEN2(dev))
1287 goto out_unlock;
1288
1289 if (overlay->active) {
1290 ret = -EBUSY;
1291 goto out_unlock;
1292 }
1293
1294 ret = check_gamma(attrs);
1295 if (ret)
1296 goto out_unlock;
1297
1298 I915_WRITE(OGAMC0, attrs->gamma0);
1299 I915_WRITE(OGAMC1, attrs->gamma1);
1300 I915_WRITE(OGAMC2, attrs->gamma2);
1301 I915_WRITE(OGAMC3, attrs->gamma3);
1302 I915_WRITE(OGAMC4, attrs->gamma4);
1303 I915_WRITE(OGAMC5, attrs->gamma5);
1304 }
1305 }
1306
1307 ret = 0;
1308 out_unlock:
1309 mutex_unlock(&dev->struct_mutex);
1310 drm_modeset_unlock_all(dev);
1311
1312 return ret;
1313 }
1314
1315 void intel_setup_overlay(struct drm_device *dev)
1316 {
1317 drm_i915_private_t *dev_priv = dev->dev_private;
1318 struct intel_overlay *overlay;
1319 struct drm_i915_gem_object *reg_bo;
1320 struct overlay_registers __iomem *regs;
1321 int ret;
1322
1323 if (!HAS_OVERLAY(dev))
1324 return;
1325
1326 overlay = kzalloc(sizeof(struct intel_overlay), GFP_KERNEL);
1327 if (!overlay)
1328 return;
1329
1330 mutex_lock(&dev->struct_mutex);
1331 if (WARN_ON(dev_priv->overlay))
1332 goto out_free;
1333
1334 overlay->dev = dev;
1335
1336 reg_bo = i915_gem_object_create_stolen(dev, PAGE_SIZE);
1337 if (reg_bo == NULL)
1338 reg_bo = i915_gem_alloc_object(dev, PAGE_SIZE);
1339 if (reg_bo == NULL)
1340 goto out_free;
1341 overlay->reg_bo = reg_bo;
1342
1343 if (OVERLAY_NEEDS_PHYSICAL(dev)) {
1344 ret = i915_gem_attach_phys_object(dev, reg_bo,
1345 I915_GEM_PHYS_OVERLAY_REGS,
1346 PAGE_SIZE);
1347 if (ret) {
1348 DRM_ERROR("failed to attach phys overlay regs\n");
1349 goto out_free_bo;
1350 }
1351 overlay->flip_addr = reg_bo->phys_obj->handle->busaddr;
1352 } else {
1353 ret = i915_gem_object_pin(reg_bo, PAGE_SIZE, true, false);
1354 if (ret) {
1355 DRM_ERROR("failed to pin overlay register bo\n");
1356 goto out_free_bo;
1357 }
1358 overlay->flip_addr = reg_bo->gtt_offset;
1359
1360 ret = i915_gem_object_set_to_gtt_domain(reg_bo, true);
1361 if (ret) {
1362 DRM_ERROR("failed to move overlay register bo into the GTT\n");
1363 goto out_unpin_bo;
1364 }
1365 }
1366
1367 /* init all values */
1368 overlay->color_key = 0x0101fe;
1369 overlay->brightness = -19;
1370 overlay->contrast = 75;
1371 overlay->saturation = 146;
1372
1373 regs = intel_overlay_map_regs(overlay);
1374 if (!regs)
1375 goto out_unpin_bo;
1376
1377 memset_io(regs, 0, sizeof(struct overlay_registers));
1378 update_polyphase_filter(regs);
1379 update_reg_attrs(overlay, regs);
1380
1381 intel_overlay_unmap_regs(overlay, regs);
1382
1383 dev_priv->overlay = overlay;
1384 mutex_unlock(&dev->struct_mutex);
1385 DRM_INFO("initialized overlay support\n");
1386 return;
1387
1388 out_unpin_bo:
1389 if (!OVERLAY_NEEDS_PHYSICAL(dev))
1390 i915_gem_object_unpin(reg_bo);
1391 out_free_bo:
1392 drm_gem_object_unreference(&reg_bo->base);
1393 out_free:
1394 mutex_unlock(&dev->struct_mutex);
1395 kfree(overlay);
1396 return;
1397 }
1398
1399 void intel_cleanup_overlay(struct drm_device *dev)
1400 {
1401 drm_i915_private_t *dev_priv = dev->dev_private;
1402
1403 if (!dev_priv->overlay)
1404 return;
1405
1406 /* The bo's should be free'd by the generic code already.
1407 * Furthermore modesetting teardown happens beforehand so the
1408 * hardware should be off already */
1409 BUG_ON(dev_priv->overlay->active);
1410
1411 drm_gem_object_unreference_unlocked(&dev_priv->overlay->reg_bo->base);
1412 kfree(dev_priv->overlay);
1413 }
1414
1415 #ifdef CONFIG_DEBUG_FS
1416 #include <linux/seq_file.h>
1417
1418 struct intel_overlay_error_state {
1419 struct overlay_registers regs;
1420 unsigned long base;
1421 u32 dovsta;
1422 u32 isr;
1423 };
1424
1425 static struct overlay_registers __iomem *
1426 intel_overlay_map_regs_atomic(struct intel_overlay *overlay)
1427 {
1428 drm_i915_private_t *dev_priv = overlay->dev->dev_private;
1429 struct overlay_registers __iomem *regs;
1430
1431 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1432 /* Cast to make sparse happy, but it's wc memory anyway, so
1433 * equivalent to the wc io mapping on X86. */
1434 regs = (struct overlay_registers __iomem *)
1435 overlay->reg_bo->phys_obj->handle->vaddr;
1436 else
1437 regs = io_mapping_map_atomic_wc(dev_priv->gtt.mappable,
1438 overlay->reg_bo->gtt_offset);
1439
1440 return regs;
1441 }
1442
1443 static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay,
1444 struct overlay_registers __iomem *regs)
1445 {
1446 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1447 io_mapping_unmap_atomic(regs);
1448 }
1449
1450
1451 struct intel_overlay_error_state *
1452 intel_overlay_capture_error_state(struct drm_device *dev)
1453 {
1454 drm_i915_private_t *dev_priv = dev->dev_private;
1455 struct intel_overlay *overlay = dev_priv->overlay;
1456 struct intel_overlay_error_state *error;
1457 struct overlay_registers __iomem *regs;
1458
1459 if (!overlay || !overlay->active)
1460 return NULL;
1461
1462 error = kmalloc(sizeof(*error), GFP_ATOMIC);
1463 if (error == NULL)
1464 return NULL;
1465
1466 error->dovsta = I915_READ(DOVSTA);
1467 error->isr = I915_READ(ISR);
1468 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1469 error->base = (__force long)overlay->reg_bo->phys_obj->handle->vaddr;
1470 else
1471 error->base = overlay->reg_bo->gtt_offset;
1472
1473 regs = intel_overlay_map_regs_atomic(overlay);
1474 if (!regs)
1475 goto err;
1476
1477 memcpy_fromio(&error->regs, regs, sizeof(struct overlay_registers));
1478 intel_overlay_unmap_regs_atomic(overlay, regs);
1479
1480 return error;
1481
1482 err:
1483 kfree(error);
1484 return NULL;
1485 }
1486
1487 void
1488 intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
1489 struct intel_overlay_error_state *error)
1490 {
1491 i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
1492 error->dovsta, error->isr);
1493 i915_error_printf(m, " Register file at 0x%08lx:\n",
1494 error->base);
1495
1496 #define P(x) i915_error_printf(m, " " #x ": 0x%08x\n", error->regs.x)
1497 P(OBUF_0Y);
1498 P(OBUF_1Y);
1499 P(OBUF_0U);
1500 P(OBUF_0V);
1501 P(OBUF_1U);
1502 P(OBUF_1V);
1503 P(OSTRIDE);
1504 P(YRGB_VPH);
1505 P(UV_VPH);
1506 P(HORZ_PH);
1507 P(INIT_PHS);
1508 P(DWINPOS);
1509 P(DWINSZ);
1510 P(SWIDTH);
1511 P(SWIDTHSW);
1512 P(SHEIGHT);
1513 P(YRGBSCALE);
1514 P(UVSCALE);
1515 P(OCLRC0);
1516 P(OCLRC1);
1517 P(DCLRKV);
1518 P(DCLRKM);
1519 P(SCLRKVH);
1520 P(SCLRKVL);
1521 P(SCLRKEN);
1522 P(OCONFIG);
1523 P(OCMD);
1524 P(OSTART_0Y);
1525 P(OSTART_1Y);
1526 P(OSTART_0U);
1527 P(OSTART_0V);
1528 P(OSTART_1U);
1529 P(OSTART_1V);
1530 P(OTILEOFF_0Y);
1531 P(OTILEOFF_1Y);
1532 P(OTILEOFF_0U);
1533 P(OTILEOFF_0V);
1534 P(OTILEOFF_1U);
1535 P(OTILEOFF_1V);
1536 P(FASTHSCALE);
1537 P(UVSCALEV);
1538 #undef P
1539 }
1540 #endif
Linux kernel - Deliverables
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