?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
drm/exynos: Stop using drm_framebuffer_unregister_private
[linux/fpc-iii.git] / drivers / gpu / drm / i915 / intel_overlay.c
blob0608fad7f593e18849ccf3d64c1ce60dc786dfdc
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 #include "intel_frontbuffer.h"
34
35 /* Limits for overlay size. According to intel doc, the real limits are:
36 * Y width: 4095, UV width (planar): 2047, Y height: 2047,
37 * UV width (planar): * 1023. But the xorg thinks 2048 for height and width. Use
38 * the mininum of both. */
39 #define IMAGE_MAX_WIDTH 2048
40 #define IMAGE_MAX_HEIGHT 2046 /* 2 * 1023 */
41 /* on 830 and 845 these large limits result in the card hanging */
42 #define IMAGE_MAX_WIDTH_LEGACY 1024
43 #define IMAGE_MAX_HEIGHT_LEGACY 1088
44
45 /* overlay register definitions */
46 /* OCMD register */
47 #define OCMD_TILED_SURFACE (0x1<<19)
48 #define OCMD_MIRROR_MASK (0x3<<17)
49 #define OCMD_MIRROR_MODE (0x3<<17)
50 #define OCMD_MIRROR_HORIZONTAL (0x1<<17)
51 #define OCMD_MIRROR_VERTICAL (0x2<<17)
52 #define OCMD_MIRROR_BOTH (0x3<<17)
53 #define OCMD_BYTEORDER_MASK (0x3<<14) /* zero for YUYV or FOURCC YUY2 */
54 #define OCMD_UV_SWAP (0x1<<14) /* YVYU */
55 #define OCMD_Y_SWAP (0x2<<14) /* UYVY or FOURCC UYVY */
56 #define OCMD_Y_AND_UV_SWAP (0x3<<14) /* VYUY */
57 #define OCMD_SOURCE_FORMAT_MASK (0xf<<10)
58 #define OCMD_RGB_888 (0x1<<10) /* not in i965 Intel docs */
59 #define OCMD_RGB_555 (0x2<<10) /* not in i965 Intel docs */
60 #define OCMD_RGB_565 (0x3<<10) /* not in i965 Intel docs */
61 #define OCMD_YUV_422_PACKED (0x8<<10)
62 #define OCMD_YUV_411_PACKED (0x9<<10) /* not in i965 Intel docs */
63 #define OCMD_YUV_420_PLANAR (0xc<<10)
64 #define OCMD_YUV_422_PLANAR (0xd<<10)
65 #define OCMD_YUV_410_PLANAR (0xe<<10) /* also 411 */
66 #define OCMD_TVSYNCFLIP_PARITY (0x1<<9)
67 #define OCMD_TVSYNCFLIP_ENABLE (0x1<<7)
68 #define OCMD_BUF_TYPE_MASK (0x1<<5)
69 #define OCMD_BUF_TYPE_FRAME (0x0<<5)
70 #define OCMD_BUF_TYPE_FIELD (0x1<<5)
71 #define OCMD_TEST_MODE (0x1<<4)
72 #define OCMD_BUFFER_SELECT (0x3<<2)
73 #define OCMD_BUFFER0 (0x0<<2)
74 #define OCMD_BUFFER1 (0x1<<2)
75 #define OCMD_FIELD_SELECT (0x1<<2)
76 #define OCMD_FIELD0 (0x0<<1)
77 #define OCMD_FIELD1 (0x1<<1)
78 #define OCMD_ENABLE (0x1<<0)
79
80 /* OCONFIG register */
81 #define OCONF_PIPE_MASK (0x1<<18)
82 #define OCONF_PIPE_A (0x0<<18)
83 #define OCONF_PIPE_B (0x1<<18)
84 #define OCONF_GAMMA2_ENABLE (0x1<<16)
85 #define OCONF_CSC_MODE_BT601 (0x0<<5)
86 #define OCONF_CSC_MODE_BT709 (0x1<<5)
87 #define OCONF_CSC_BYPASS (0x1<<4)
88 #define OCONF_CC_OUT_8BIT (0x1<<3)
89 #define OCONF_TEST_MODE (0x1<<2)
90 #define OCONF_THREE_LINE_BUFFER (0x1<<0)
91 #define OCONF_TWO_LINE_BUFFER (0x0<<0)
92
93 /* DCLRKM (dst-key) register */
94 #define DST_KEY_ENABLE (0x1<<31)
95 #define CLK_RGB24_MASK 0x0
96 #define CLK_RGB16_MASK 0x070307
97 #define CLK_RGB15_MASK 0x070707
98 #define CLK_RGB8I_MASK 0xffffff
99
100 #define RGB16_TO_COLORKEY(c) \
101 (((c & 0xF800) << 8) | ((c & 0x07E0) << 5) | ((c & 0x001F) << 3))
102 #define RGB15_TO_COLORKEY(c) \
103 (((c & 0x7c00) << 9) | ((c & 0x03E0) << 6) | ((c & 0x001F) << 3))
104
105 /* overlay flip addr flag */
106 #define OFC_UPDATE 0x1
107
108 /* polyphase filter coefficients */
109 #define N_HORIZ_Y_TAPS 5
110 #define N_VERT_Y_TAPS 3
111 #define N_HORIZ_UV_TAPS 3
112 #define N_VERT_UV_TAPS 3
113 #define N_PHASES 17
114 #define MAX_TAPS 5
115
116 /* memory bufferd overlay registers */
117 struct overlay_registers {
118 u32 OBUF_0Y;
119 u32 OBUF_1Y;
120 u32 OBUF_0U;
121 u32 OBUF_0V;
122 u32 OBUF_1U;
123 u32 OBUF_1V;
124 u32 OSTRIDE;
125 u32 YRGB_VPH;
126 u32 UV_VPH;
127 u32 HORZ_PH;
128 u32 INIT_PHS;
129 u32 DWINPOS;
130 u32 DWINSZ;
131 u32 SWIDTH;
132 u32 SWIDTHSW;
133 u32 SHEIGHT;
134 u32 YRGBSCALE;
135 u32 UVSCALE;
136 u32 OCLRC0;
137 u32 OCLRC1;
138 u32 DCLRKV;
139 u32 DCLRKM;
140 u32 SCLRKVH;
141 u32 SCLRKVL;
142 u32 SCLRKEN;
143 u32 OCONFIG;
144 u32 OCMD;
145 u32 RESERVED1; /* 0x6C */
146 u32 OSTART_0Y;
147 u32 OSTART_1Y;
148 u32 OSTART_0U;
149 u32 OSTART_0V;
150 u32 OSTART_1U;
151 u32 OSTART_1V;
152 u32 OTILEOFF_0Y;
153 u32 OTILEOFF_1Y;
154 u32 OTILEOFF_0U;
155 u32 OTILEOFF_0V;
156 u32 OTILEOFF_1U;
157 u32 OTILEOFF_1V;
158 u32 FASTHSCALE; /* 0xA0 */
159 u32 UVSCALEV; /* 0xA4 */
160 u32 RESERVEDC[(0x200 - 0xA8) / 4]; /* 0xA8 - 0x1FC */
161 u16 Y_VCOEFS[N_VERT_Y_TAPS * N_PHASES]; /* 0x200 */
162 u16 RESERVEDD[0x100 / 2 - N_VERT_Y_TAPS * N_PHASES];
163 u16 Y_HCOEFS[N_HORIZ_Y_TAPS * N_PHASES]; /* 0x300 */
164 u16 RESERVEDE[0x200 / 2 - N_HORIZ_Y_TAPS * N_PHASES];
165 u16 UV_VCOEFS[N_VERT_UV_TAPS * N_PHASES]; /* 0x500 */
166 u16 RESERVEDF[0x100 / 2 - N_VERT_UV_TAPS * N_PHASES];
167 u16 UV_HCOEFS[N_HORIZ_UV_TAPS * N_PHASES]; /* 0x600 */
168 u16 RESERVEDG[0x100 / 2 - N_HORIZ_UV_TAPS * N_PHASES];
169 };
170
171 struct intel_overlay {
172 struct drm_i915_private *i915;
173 struct intel_crtc *crtc;
174 struct i915_vma *vma;
175 struct i915_vma *old_vma;
176 bool active;
177 bool pfit_active;
178 u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
179 u32 color_key:24;
180 u32 color_key_enabled:1;
181 u32 brightness, contrast, saturation;
182 u32 old_xscale, old_yscale;
183 /* register access */
184 u32 flip_addr;
185 struct drm_i915_gem_object *reg_bo;
186 /* flip handling */
187 struct i915_gem_active last_flip;
188 };
189
190 static void i830_overlay_clock_gating(struct drm_i915_private *dev_priv,
191 bool enable)
192 {
193 struct pci_dev *pdev = dev_priv->drm.pdev;
194 u8 val;
195
196 /* WA_OVERLAY_CLKGATE:alm */
197 if (enable)
198 I915_WRITE(DSPCLK_GATE_D, 0);
199 else
200 I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
201
202 /* WA_DISABLE_L2CACHE_CLOCK_GATING:alm */
203 pci_bus_read_config_byte(pdev->bus,
204 PCI_DEVFN(0, 0), I830_CLOCK_GATE, &val);
205 if (enable)
206 val &= ~I830_L2_CACHE_CLOCK_GATE_DISABLE;
207 else
208 val |= I830_L2_CACHE_CLOCK_GATE_DISABLE;
209 pci_bus_write_config_byte(pdev->bus,
210 PCI_DEVFN(0, 0), I830_CLOCK_GATE, val);
211 }
212
213 static struct overlay_registers __iomem *
214 intel_overlay_map_regs(struct intel_overlay *overlay)
215 {
216 struct drm_i915_private *dev_priv = overlay->i915;
217 struct overlay_registers __iomem *regs;
218
219 if (OVERLAY_NEEDS_PHYSICAL(dev_priv))
220 regs = (struct overlay_registers __iomem *)overlay->reg_bo->phys_handle->vaddr;
221 else
222 regs = io_mapping_map_wc(&dev_priv->ggtt.mappable,
223 overlay->flip_addr,
224 PAGE_SIZE);
225
226 return regs;
227 }
228
229 static void intel_overlay_unmap_regs(struct intel_overlay *overlay,
230 struct overlay_registers __iomem *regs)
231 {
232 if (!OVERLAY_NEEDS_PHYSICAL(overlay->i915))
233 io_mapping_unmap(regs);
234 }
235
236 static void intel_overlay_submit_request(struct intel_overlay *overlay,
237 struct drm_i915_gem_request *req,
238 i915_gem_retire_fn retire)
239 {
240 GEM_BUG_ON(i915_gem_active_peek(&overlay->last_flip,
241 &overlay->i915->drm.struct_mutex));
242 i915_gem_active_set_retire_fn(&overlay->last_flip, retire,
243 &overlay->i915->drm.struct_mutex);
244 i915_gem_active_set(&overlay->last_flip, req);
245 i915_add_request(req);
246 }
247
248 static int intel_overlay_do_wait_request(struct intel_overlay *overlay,
249 struct drm_i915_gem_request *req,
250 i915_gem_retire_fn retire)
251 {
252 intel_overlay_submit_request(overlay, req, retire);
253 return i915_gem_active_retire(&overlay->last_flip,
254 &overlay->i915->drm.struct_mutex);
255 }
256
257 static struct drm_i915_gem_request *alloc_request(struct intel_overlay *overlay)
258 {
259 struct drm_i915_private *dev_priv = overlay->i915;
260 struct intel_engine_cs *engine = dev_priv->engine[RCS];
261
262 return i915_gem_request_alloc(engine, dev_priv->kernel_context);
263 }
264
265 /* overlay needs to be disable in OCMD reg */
266 static int intel_overlay_on(struct intel_overlay *overlay)
267 {
268 struct drm_i915_private *dev_priv = overlay->i915;
269 struct drm_i915_gem_request *req;
270 struct intel_ring *ring;
271 int ret;
272
273 WARN_ON(overlay->active);
274 WARN_ON(IS_I830(dev_priv) && !(dev_priv->quirks & QUIRK_PIPEA_FORCE));
275
276 req = alloc_request(overlay);
277 if (IS_ERR(req))
278 return PTR_ERR(req);
279
280 ret = intel_ring_begin(req, 4);
281 if (ret) {
282 i915_add_request_no_flush(req);
283 return ret;
284 }
285
286 overlay->active = true;
287
288 if (IS_I830(dev_priv))
289 i830_overlay_clock_gating(dev_priv, false);
290
291 ring = req->ring;
292 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_ON);
293 intel_ring_emit(ring, overlay->flip_addr | OFC_UPDATE);
294 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
295 intel_ring_emit(ring, MI_NOOP);
296 intel_ring_advance(ring);
297
298 return intel_overlay_do_wait_request(overlay, req, NULL);
299 }
300
301 static void intel_overlay_flip_prepare(struct intel_overlay *overlay,
302 struct i915_vma *vma)
303 {
304 enum pipe pipe = overlay->crtc->pipe;
305
306 WARN_ON(overlay->old_vma);
307
308 i915_gem_track_fb(overlay->vma ? overlay->vma->obj : NULL,
309 vma ? vma->obj : NULL,
310 INTEL_FRONTBUFFER_OVERLAY(pipe));
311
312 intel_frontbuffer_flip_prepare(overlay->i915,
313 INTEL_FRONTBUFFER_OVERLAY(pipe));
314
315 overlay->old_vma = overlay->vma;
316 if (vma)
317 overlay->vma = i915_vma_get(vma);
318 else
319 overlay->vma = NULL;
320 }
321
322 /* overlay needs to be enabled in OCMD reg */
323 static int intel_overlay_continue(struct intel_overlay *overlay,
324 struct i915_vma *vma,
325 bool load_polyphase_filter)
326 {
327 struct drm_i915_private *dev_priv = overlay->i915;
328 struct drm_i915_gem_request *req;
329 struct intel_ring *ring;
330 u32 flip_addr = overlay->flip_addr;
331 u32 tmp;
332 int ret;
333
334 WARN_ON(!overlay->active);
335
336 if (load_polyphase_filter)
337 flip_addr |= OFC_UPDATE;
338
339 /* check for underruns */
340 tmp = I915_READ(DOVSTA);
341 if (tmp & (1 << 17))
342 DRM_DEBUG("overlay underrun, DOVSTA: %x\n", tmp);
343
344 req = alloc_request(overlay);
345 if (IS_ERR(req))
346 return PTR_ERR(req);
347
348 ret = intel_ring_begin(req, 2);
349 if (ret) {
350 i915_add_request_no_flush(req);
351 return ret;
352 }
353
354 ring = req->ring;
355 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
356 intel_ring_emit(ring, flip_addr);
357 intel_ring_advance(ring);
358
359 intel_overlay_flip_prepare(overlay, vma);
360
361 intel_overlay_submit_request(overlay, req, NULL);
362
363 return 0;
364 }
365
366 static void intel_overlay_release_old_vma(struct intel_overlay *overlay)
367 {
368 struct i915_vma *vma;
369
370 vma = fetch_and_zero(&overlay->old_vma);
371 if (WARN_ON(!vma))
372 return;
373
374 intel_frontbuffer_flip_complete(overlay->i915,
375 INTEL_FRONTBUFFER_OVERLAY(overlay->crtc->pipe));
376
377 i915_gem_object_unpin_from_display_plane(vma);
378 i915_vma_put(vma);
379 }
380
381 static void intel_overlay_release_old_vid_tail(struct i915_gem_active *active,
382 struct drm_i915_gem_request *req)
383 {
384 struct intel_overlay *overlay =
385 container_of(active, typeof(*overlay), last_flip);
386
387 intel_overlay_release_old_vma(overlay);
388 }
389
390 static void intel_overlay_off_tail(struct i915_gem_active *active,
391 struct drm_i915_gem_request *req)
392 {
393 struct intel_overlay *overlay =
394 container_of(active, typeof(*overlay), last_flip);
395 struct drm_i915_private *dev_priv = overlay->i915;
396
397 intel_overlay_release_old_vma(overlay);
398
399 overlay->crtc->overlay = NULL;
400 overlay->crtc = NULL;
401 overlay->active = false;
402
403 if (IS_I830(dev_priv))
404 i830_overlay_clock_gating(dev_priv, true);
405 }
406
407 /* overlay needs to be disabled in OCMD reg */
408 static int intel_overlay_off(struct intel_overlay *overlay)
409 {
410 struct drm_i915_gem_request *req;
411 struct intel_ring *ring;
412 u32 flip_addr = overlay->flip_addr;
413 int ret;
414
415 WARN_ON(!overlay->active);
416
417 /* According to intel docs the overlay hw may hang (when switching
418 * off) without loading the filter coeffs. It is however unclear whether
419 * this applies to the disabling of the overlay or to the switching off
420 * of the hw. Do it in both cases */
421 flip_addr |= OFC_UPDATE;
422
423 req = alloc_request(overlay);
424 if (IS_ERR(req))
425 return PTR_ERR(req);
426
427 ret = intel_ring_begin(req, 6);
428 if (ret) {
429 i915_add_request_no_flush(req);
430 return ret;
431 }
432
433 ring = req->ring;
434
435 /* wait for overlay to go idle */
436 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
437 intel_ring_emit(ring, flip_addr);
438 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
439
440 /* turn overlay off */
441 intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
442 intel_ring_emit(ring, flip_addr);
443 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
444
445 intel_ring_advance(ring);
446
447 intel_overlay_flip_prepare(overlay, NULL);
448
449 return intel_overlay_do_wait_request(overlay, req,
450 intel_overlay_off_tail);
451 }
452
453 /* recover from an interruption due to a signal
454 * We have to be careful not to repeat work forever an make forward progess. */
455 static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay)
456 {
457 return i915_gem_active_retire(&overlay->last_flip,
458 &overlay->i915->drm.struct_mutex);
459 }
460
461 /* Wait for pending overlay flip and release old frame.
462 * Needs to be called before the overlay register are changed
463 * via intel_overlay_(un)map_regs
464 */
465 static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
466 {
467 struct drm_i915_private *dev_priv = overlay->i915;
468 int ret;
469
470 lockdep_assert_held(&dev_priv->drm.struct_mutex);
471
472 /* Only wait if there is actually an old frame to release to
473 * guarantee forward progress.
474 */
475 if (!overlay->old_vma)
476 return 0;
477
478 if (I915_READ(ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT) {
479 /* synchronous slowpath */
480 struct drm_i915_gem_request *req;
481 struct intel_ring *ring;
482
483 req = alloc_request(overlay);
484 if (IS_ERR(req))
485 return PTR_ERR(req);
486
487 ret = intel_ring_begin(req, 2);
488 if (ret) {
489 i915_add_request_no_flush(req);
490 return ret;
491 }
492
493 ring = req->ring;
494 intel_ring_emit(ring,
495 MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
496 intel_ring_emit(ring, MI_NOOP);
497 intel_ring_advance(ring);
498
499 ret = intel_overlay_do_wait_request(overlay, req,
500 intel_overlay_release_old_vid_tail);
501 if (ret)
502 return ret;
503 } else
504 intel_overlay_release_old_vid_tail(&overlay->last_flip, NULL);
505
506 return 0;
507 }
508
509 void intel_overlay_reset(struct drm_i915_private *dev_priv)
510 {
511 struct intel_overlay *overlay = dev_priv->overlay;
512
513 if (!overlay)
514 return;
515
516 intel_overlay_release_old_vid(overlay);
517
518 overlay->old_xscale = 0;
519 overlay->old_yscale = 0;
520 overlay->crtc = NULL;
521 overlay->active = false;
522 }
523
524 struct put_image_params {
525 int format;
526 short dst_x;
527 short dst_y;
528 short dst_w;
529 short dst_h;
530 short src_w;
531 short src_scan_h;
532 short src_scan_w;
533 short src_h;
534 short stride_Y;
535 short stride_UV;
536 int offset_Y;
537 int offset_U;
538 int offset_V;
539 };
540
541 static int packed_depth_bytes(u32 format)
542 {
543 switch (format & I915_OVERLAY_DEPTH_MASK) {
544 case I915_OVERLAY_YUV422:
545 return 4;
546 case I915_OVERLAY_YUV411:
547 /* return 6; not implemented */
548 default:
549 return -EINVAL;
550 }
551 }
552
553 static int packed_width_bytes(u32 format, short width)
554 {
555 switch (format & I915_OVERLAY_DEPTH_MASK) {
556 case I915_OVERLAY_YUV422:
557 return width << 1;
558 default:
559 return -EINVAL;
560 }
561 }
562
563 static int uv_hsubsampling(u32 format)
564 {
565 switch (format & I915_OVERLAY_DEPTH_MASK) {
566 case I915_OVERLAY_YUV422:
567 case I915_OVERLAY_YUV420:
568 return 2;
569 case I915_OVERLAY_YUV411:
570 case I915_OVERLAY_YUV410:
571 return 4;
572 default:
573 return -EINVAL;
574 }
575 }
576
577 static int uv_vsubsampling(u32 format)
578 {
579 switch (format & I915_OVERLAY_DEPTH_MASK) {
580 case I915_OVERLAY_YUV420:
581 case I915_OVERLAY_YUV410:
582 return 2;
583 case I915_OVERLAY_YUV422:
584 case I915_OVERLAY_YUV411:
585 return 1;
586 default:
587 return -EINVAL;
588 }
589 }
590
591 static u32 calc_swidthsw(struct drm_i915_private *dev_priv, u32 offset, u32 width)
592 {
593 u32 sw;
594
595 if (IS_GEN2(dev_priv))
596 sw = ALIGN((offset & 31) + width, 32);
597 else
598 sw = ALIGN((offset & 63) + width, 64);
599
600 if (sw == 0)
601 return 0;
602
603 return (sw - 32) >> 3;
604 }
605
606 static const u16 y_static_hcoeffs[N_PHASES][N_HORIZ_Y_TAPS] = {
607 [ 0] = { 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0, },
608 [ 1] = { 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440, },
609 [ 2] = { 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0, },
610 [ 3] = { 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380, },
611 [ 4] = { 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320, },
612 [ 5] = { 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0, },
613 [ 6] = { 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260, },
614 [ 7] = { 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200, },
615 [ 8] = { 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0, },
616 [ 9] = { 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160, },
617 [10] = { 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120, },
618 [11] = { 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0, },
619 [12] = { 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0, },
620 [13] = { 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060, },
621 [14] = { 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040, },
622 [15] = { 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020, },
623 [16] = { 0xb000, 0x3000, 0x0800, 0x3000, 0xb000, },
624 };
625
626 static const u16 uv_static_hcoeffs[N_PHASES][N_HORIZ_UV_TAPS] = {
627 [ 0] = { 0x3000, 0x1800, 0x1800, },
628 [ 1] = { 0xb000, 0x18d0, 0x2e60, },
629 [ 2] = { 0xb000, 0x1990, 0x2ce0, },
630 [ 3] = { 0xb020, 0x1a68, 0x2b40, },
631 [ 4] = { 0xb040, 0x1b20, 0x29e0, },
632 [ 5] = { 0xb060, 0x1bd8, 0x2880, },
633 [ 6] = { 0xb080, 0x1c88, 0x3e60, },
634 [ 7] = { 0xb0a0, 0x1d28, 0x3c00, },
635 [ 8] = { 0xb0c0, 0x1db8, 0x39e0, },
636 [ 9] = { 0xb0e0, 0x1e40, 0x37e0, },
637 [10] = { 0xb100, 0x1eb8, 0x3620, },
638 [11] = { 0xb100, 0x1f18, 0x34a0, },
639 [12] = { 0xb100, 0x1f68, 0x3360, },
640 [13] = { 0xb0e0, 0x1fa8, 0x3240, },
641 [14] = { 0xb0c0, 0x1fe0, 0x3140, },
642 [15] = { 0xb060, 0x1ff0, 0x30a0, },
643 [16] = { 0x3000, 0x0800, 0x3000, },
644 };
645
646 static void update_polyphase_filter(struct overlay_registers __iomem *regs)
647 {
648 memcpy_toio(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs));
649 memcpy_toio(regs->UV_HCOEFS, uv_static_hcoeffs,
650 sizeof(uv_static_hcoeffs));
651 }
652
653 static bool update_scaling_factors(struct intel_overlay *overlay,
654 struct overlay_registers __iomem *regs,
655 struct put_image_params *params)
656 {
657 /* fixed point with a 12 bit shift */
658 u32 xscale, yscale, xscale_UV, yscale_UV;
659 #define FP_SHIFT 12
660 #define FRACT_MASK 0xfff
661 bool scale_changed = false;
662 int uv_hscale = uv_hsubsampling(params->format);
663 int uv_vscale = uv_vsubsampling(params->format);
664
665 if (params->dst_w > 1)
666 xscale = ((params->src_scan_w - 1) << FP_SHIFT)
667 /(params->dst_w);
668 else
669 xscale = 1 << FP_SHIFT;
670
671 if (params->dst_h > 1)
672 yscale = ((params->src_scan_h - 1) << FP_SHIFT)
673 /(params->dst_h);
674 else
675 yscale = 1 << FP_SHIFT;
676
677 /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/
678 xscale_UV = xscale/uv_hscale;
679 yscale_UV = yscale/uv_vscale;
680 /* make the Y scale to UV scale ratio an exact multiply */
681 xscale = xscale_UV * uv_hscale;
682 yscale = yscale_UV * uv_vscale;
683 /*} else {
684 xscale_UV = 0;
685 yscale_UV = 0;
686 }*/
687
688 if (xscale != overlay->old_xscale || yscale != overlay->old_yscale)
689 scale_changed = true;
690 overlay->old_xscale = xscale;
691 overlay->old_yscale = yscale;
692
693 iowrite32(((yscale & FRACT_MASK) << 20) |
694 ((xscale >> FP_SHIFT) << 16) |
695 ((xscale & FRACT_MASK) << 3),
696 &regs->YRGBSCALE);
697
698 iowrite32(((yscale_UV & FRACT_MASK) << 20) |
699 ((xscale_UV >> FP_SHIFT) << 16) |
700 ((xscale_UV & FRACT_MASK) << 3),
701 &regs->UVSCALE);
702
703 iowrite32((((yscale >> FP_SHIFT) << 16) |
704 ((yscale_UV >> FP_SHIFT) << 0)),
705 &regs->UVSCALEV);
706
707 if (scale_changed)
708 update_polyphase_filter(regs);
709
710 return scale_changed;
711 }
712
713 static void update_colorkey(struct intel_overlay *overlay,
714 struct overlay_registers __iomem *regs)
715 {
716 const struct intel_plane_state *state =
717 to_intel_plane_state(overlay->crtc->base.primary->state);
718 u32 key = overlay->color_key;
719 u32 format = 0;
720 u32 flags = 0;
721
722 if (overlay->color_key_enabled)
723 flags |= DST_KEY_ENABLE;
724
725 if (state->base.visible)
726 format = state->base.fb->format->format;
727
728 switch (format) {
729 case DRM_FORMAT_C8:
730 key = 0;
731 flags |= CLK_RGB8I_MASK;
732 break;
733 case DRM_FORMAT_XRGB1555:
734 key = RGB15_TO_COLORKEY(key);
735 flags |= CLK_RGB15_MASK;
736 break;
737 case DRM_FORMAT_RGB565:
738 key = RGB16_TO_COLORKEY(key);
739 flags |= CLK_RGB16_MASK;
740 break;
741 default:
742 flags |= CLK_RGB24_MASK;
743 break;
744 }
745
746 iowrite32(key, &regs->DCLRKV);
747 iowrite32(flags, &regs->DCLRKM);
748 }
749
750 static u32 overlay_cmd_reg(struct put_image_params *params)
751 {
752 u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0;
753
754 if (params->format & I915_OVERLAY_YUV_PLANAR) {
755 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
756 case I915_OVERLAY_YUV422:
757 cmd |= OCMD_YUV_422_PLANAR;
758 break;
759 case I915_OVERLAY_YUV420:
760 cmd |= OCMD_YUV_420_PLANAR;
761 break;
762 case I915_OVERLAY_YUV411:
763 case I915_OVERLAY_YUV410:
764 cmd |= OCMD_YUV_410_PLANAR;
765 break;
766 }
767 } else { /* YUV packed */
768 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
769 case I915_OVERLAY_YUV422:
770 cmd |= OCMD_YUV_422_PACKED;
771 break;
772 case I915_OVERLAY_YUV411:
773 cmd |= OCMD_YUV_411_PACKED;
774 break;
775 }
776
777 switch (params->format & I915_OVERLAY_SWAP_MASK) {
778 case I915_OVERLAY_NO_SWAP:
779 break;
780 case I915_OVERLAY_UV_SWAP:
781 cmd |= OCMD_UV_SWAP;
782 break;
783 case I915_OVERLAY_Y_SWAP:
784 cmd |= OCMD_Y_SWAP;
785 break;
786 case I915_OVERLAY_Y_AND_UV_SWAP:
787 cmd |= OCMD_Y_AND_UV_SWAP;
788 break;
789 }
790 }
791
792 return cmd;
793 }
794
795 static int intel_overlay_do_put_image(struct intel_overlay *overlay,
796 struct drm_i915_gem_object *new_bo,
797 struct put_image_params *params)
798 {
799 int ret, tmp_width;
800 struct overlay_registers __iomem *regs;
801 bool scale_changed = false;
802 struct drm_i915_private *dev_priv = overlay->i915;
803 u32 swidth, swidthsw, sheight, ostride;
804 enum pipe pipe = overlay->crtc->pipe;
805 struct i915_vma *vma;
806
807 lockdep_assert_held(&dev_priv->drm.struct_mutex);
808 WARN_ON(!drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
809
810 ret = intel_overlay_release_old_vid(overlay);
811 if (ret != 0)
812 return ret;
813
814 vma = i915_gem_object_pin_to_display_plane(new_bo, 0, NULL);
815 if (IS_ERR(vma))
816 return PTR_ERR(vma);
817
818 ret = i915_vma_put_fence(vma);
819 if (ret)
820 goto out_unpin;
821
822 if (!overlay->active) {
823 u32 oconfig;
824 regs = intel_overlay_map_regs(overlay);
825 if (!regs) {
826 ret = -ENOMEM;
827 goto out_unpin;
828 }
829 oconfig = OCONF_CC_OUT_8BIT;
830 if (IS_GEN4(dev_priv))
831 oconfig |= OCONF_CSC_MODE_BT709;
832 oconfig |= pipe == 0 ?
833 OCONF_PIPE_A : OCONF_PIPE_B;
834 iowrite32(oconfig, &regs->OCONFIG);
835 intel_overlay_unmap_regs(overlay, regs);
836
837 ret = intel_overlay_on(overlay);
838 if (ret != 0)
839 goto out_unpin;
840 }
841
842 regs = intel_overlay_map_regs(overlay);
843 if (!regs) {
844 ret = -ENOMEM;
845 goto out_unpin;
846 }
847
848 iowrite32((params->dst_y << 16) | params->dst_x, &regs->DWINPOS);
849 iowrite32((params->dst_h << 16) | params->dst_w, &regs->DWINSZ);
850
851 if (params->format & I915_OVERLAY_YUV_PACKED)
852 tmp_width = packed_width_bytes(params->format, params->src_w);
853 else
854 tmp_width = params->src_w;
855
856 swidth = params->src_w;
857 swidthsw = calc_swidthsw(dev_priv, params->offset_Y, tmp_width);
858 sheight = params->src_h;
859 iowrite32(i915_ggtt_offset(vma) + params->offset_Y, &regs->OBUF_0Y);
860 ostride = params->stride_Y;
861
862 if (params->format & I915_OVERLAY_YUV_PLANAR) {
863 int uv_hscale = uv_hsubsampling(params->format);
864 int uv_vscale = uv_vsubsampling(params->format);
865 u32 tmp_U, tmp_V;
866 swidth |= (params->src_w/uv_hscale) << 16;
867 tmp_U = calc_swidthsw(dev_priv, params->offset_U,
868 params->src_w/uv_hscale);
869 tmp_V = calc_swidthsw(dev_priv, params->offset_V,
870 params->src_w/uv_hscale);
871 swidthsw |= max_t(u32, tmp_U, tmp_V) << 16;
872 sheight |= (params->src_h/uv_vscale) << 16;
873 iowrite32(i915_ggtt_offset(vma) + params->offset_U,
874 &regs->OBUF_0U);
875 iowrite32(i915_ggtt_offset(vma) + params->offset_V,
876 &regs->OBUF_0V);
877 ostride |= params->stride_UV << 16;
878 }
879
880 iowrite32(swidth, &regs->SWIDTH);
881 iowrite32(swidthsw, &regs->SWIDTHSW);
882 iowrite32(sheight, &regs->SHEIGHT);
883 iowrite32(ostride, &regs->OSTRIDE);
884
885 scale_changed = update_scaling_factors(overlay, regs, params);
886
887 update_colorkey(overlay, regs);
888
889 iowrite32(overlay_cmd_reg(params), &regs->OCMD);
890
891 intel_overlay_unmap_regs(overlay, regs);
892
893 ret = intel_overlay_continue(overlay, vma, scale_changed);
894 if (ret)
895 goto out_unpin;
896
897 return 0;
898
899 out_unpin:
900 i915_gem_object_unpin_from_display_plane(vma);
901 return ret;
902 }
903
904 int intel_overlay_switch_off(struct intel_overlay *overlay)
905 {
906 struct drm_i915_private *dev_priv = overlay->i915;
907 struct overlay_registers __iomem *regs;
908 int ret;
909
910 lockdep_assert_held(&dev_priv->drm.struct_mutex);
911 WARN_ON(!drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
912
913 ret = intel_overlay_recover_from_interrupt(overlay);
914 if (ret != 0)
915 return ret;
916
917 if (!overlay->active)
918 return 0;
919
920 ret = intel_overlay_release_old_vid(overlay);
921 if (ret != 0)
922 return ret;
923
924 regs = intel_overlay_map_regs(overlay);
925 iowrite32(0, &regs->OCMD);
926 intel_overlay_unmap_regs(overlay, regs);
927
928 return intel_overlay_off(overlay);
929 }
930
931 static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
932 struct intel_crtc *crtc)
933 {
934 if (!crtc->active)
935 return -EINVAL;
936
937 /* can't use the overlay with double wide pipe */
938 if (crtc->config->double_wide)
939 return -EINVAL;
940
941 return 0;
942 }
943
944 static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
945 {
946 struct drm_i915_private *dev_priv = overlay->i915;
947 u32 pfit_control = I915_READ(PFIT_CONTROL);
948 u32 ratio;
949
950 /* XXX: This is not the same logic as in the xorg driver, but more in
951 * line with the intel documentation for the i965
952 */
953 if (INTEL_GEN(dev_priv) >= 4) {
954 /* on i965 use the PGM reg to read out the autoscaler values */
955 ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
956 } else {
957 if (pfit_control & VERT_AUTO_SCALE)
958 ratio = I915_READ(PFIT_AUTO_RATIOS);
959 else
960 ratio = I915_READ(PFIT_PGM_RATIOS);
961 ratio >>= PFIT_VERT_SCALE_SHIFT;
962 }
963
964 overlay->pfit_vscale_ratio = ratio;
965 }
966
967 static int check_overlay_dst(struct intel_overlay *overlay,
968 struct drm_intel_overlay_put_image *rec)
969 {
970 const struct intel_crtc_state *pipe_config =
971 overlay->crtc->config;
972
973 if (rec->dst_x < pipe_config->pipe_src_w &&
974 rec->dst_x + rec->dst_width <= pipe_config->pipe_src_w &&
975 rec->dst_y < pipe_config->pipe_src_h &&
976 rec->dst_y + rec->dst_height <= pipe_config->pipe_src_h)
977 return 0;
978 else
979 return -EINVAL;
980 }
981
982 static int check_overlay_scaling(struct put_image_params *rec)
983 {
984 u32 tmp;
985
986 /* downscaling limit is 8.0 */
987 tmp = ((rec->src_scan_h << 16) / rec->dst_h) >> 16;
988 if (tmp > 7)
989 return -EINVAL;
990 tmp = ((rec->src_scan_w << 16) / rec->dst_w) >> 16;
991 if (tmp > 7)
992 return -EINVAL;
993
994 return 0;
995 }
996
997 static int check_overlay_src(struct drm_i915_private *dev_priv,
998 struct drm_intel_overlay_put_image *rec,
999 struct drm_i915_gem_object *new_bo)
1000 {
1001 int uv_hscale = uv_hsubsampling(rec->flags);
1002 int uv_vscale = uv_vsubsampling(rec->flags);
1003 u32 stride_mask;
1004 int depth;
1005 u32 tmp;
1006
1007 /* check src dimensions */
1008 if (IS_I845G(dev_priv) || IS_I830(dev_priv)) {
1009 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
1010 rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
1011 return -EINVAL;
1012 } else {
1013 if (rec->src_height > IMAGE_MAX_HEIGHT ||
1014 rec->src_width > IMAGE_MAX_WIDTH)
1015 return -EINVAL;
1016 }
1017
1018 /* better safe than sorry, use 4 as the maximal subsampling ratio */
1019 if (rec->src_height < N_VERT_Y_TAPS*4 ||
1020 rec->src_width < N_HORIZ_Y_TAPS*4)
1021 return -EINVAL;
1022
1023 /* check alignment constraints */
1024 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
1025 case I915_OVERLAY_RGB:
1026 /* not implemented */
1027 return -EINVAL;
1028
1029 case I915_OVERLAY_YUV_PACKED:
1030 if (uv_vscale != 1)
1031 return -EINVAL;
1032
1033 depth = packed_depth_bytes(rec->flags);
1034 if (depth < 0)
1035 return depth;
1036
1037 /* ignore UV planes */
1038 rec->stride_UV = 0;
1039 rec->offset_U = 0;
1040 rec->offset_V = 0;
1041 /* check pixel alignment */
1042 if (rec->offset_Y % depth)
1043 return -EINVAL;
1044 break;
1045
1046 case I915_OVERLAY_YUV_PLANAR:
1047 if (uv_vscale < 0 || uv_hscale < 0)
1048 return -EINVAL;
1049 /* no offset restrictions for planar formats */
1050 break;
1051
1052 default:
1053 return -EINVAL;
1054 }
1055
1056 if (rec->src_width % uv_hscale)
1057 return -EINVAL;
1058
1059 /* stride checking */
1060 if (IS_I830(dev_priv) || IS_I845G(dev_priv))
1061 stride_mask = 255;
1062 else
1063 stride_mask = 63;
1064
1065 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
1066 return -EINVAL;
1067 if (IS_GEN4(dev_priv) && rec->stride_Y < 512)
1068 return -EINVAL;
1069
1070 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
1071 4096 : 8192;
1072 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
1073 return -EINVAL;
1074
1075 /* check buffer dimensions */
1076 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
1077 case I915_OVERLAY_RGB:
1078 case I915_OVERLAY_YUV_PACKED:
1079 /* always 4 Y values per depth pixels */
1080 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
1081 return -EINVAL;
1082
1083 tmp = rec->stride_Y*rec->src_height;
1084 if (rec->offset_Y + tmp > new_bo->base.size)
1085 return -EINVAL;
1086 break;
1087
1088 case I915_OVERLAY_YUV_PLANAR:
1089 if (rec->src_width > rec->stride_Y)
1090 return -EINVAL;
1091 if (rec->src_width/uv_hscale > rec->stride_UV)
1092 return -EINVAL;
1093
1094 tmp = rec->stride_Y * rec->src_height;
1095 if (rec->offset_Y + tmp > new_bo->base.size)
1096 return -EINVAL;
1097
1098 tmp = rec->stride_UV * (rec->src_height / uv_vscale);
1099 if (rec->offset_U + tmp > new_bo->base.size ||
1100 rec->offset_V + tmp > new_bo->base.size)
1101 return -EINVAL;
1102 break;
1103 }
1104
1105 return 0;
1106 }
1107
1108 int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
1109 struct drm_file *file_priv)
1110 {
1111 struct drm_intel_overlay_put_image *put_image_rec = data;
1112 struct drm_i915_private *dev_priv = to_i915(dev);
1113 struct intel_overlay *overlay;
1114 struct drm_crtc *drmmode_crtc;
1115 struct intel_crtc *crtc;
1116 struct drm_i915_gem_object *new_bo;
1117 struct put_image_params *params;
1118 int ret;
1119
1120 overlay = dev_priv->overlay;
1121 if (!overlay) {
1122 DRM_DEBUG("userspace bug: no overlay\n");
1123 return -ENODEV;
1124 }
1125
1126 if (!(put_image_rec->flags & I915_OVERLAY_ENABLE)) {
1127 drm_modeset_lock_all(dev);
1128 mutex_lock(&dev->struct_mutex);
1129
1130 ret = intel_overlay_switch_off(overlay);
1131
1132 mutex_unlock(&dev->struct_mutex);
1133 drm_modeset_unlock_all(dev);
1134
1135 return ret;
1136 }
1137
1138 params = kmalloc(sizeof(*params), GFP_KERNEL);
1139 if (!params)
1140 return -ENOMEM;
1141
1142 drmmode_crtc = drm_crtc_find(dev, put_image_rec->crtc_id);
1143 if (!drmmode_crtc) {
1144 ret = -ENOENT;
1145 goto out_free;
1146 }
1147 crtc = to_intel_crtc(drmmode_crtc);
1148
1149 new_bo = i915_gem_object_lookup(file_priv, put_image_rec->bo_handle);
1150 if (!new_bo) {
1151 ret = -ENOENT;
1152 goto out_free;
1153 }
1154
1155 drm_modeset_lock_all(dev);
1156 mutex_lock(&dev->struct_mutex);
1157
1158 if (i915_gem_object_is_tiled(new_bo)) {
1159 DRM_DEBUG_KMS("buffer used for overlay image can not be tiled\n");
1160 ret = -EINVAL;
1161 goto out_unlock;
1162 }
1163
1164 ret = intel_overlay_recover_from_interrupt(overlay);
1165 if (ret != 0)
1166 goto out_unlock;
1167
1168 if (overlay->crtc != crtc) {
1169 ret = intel_overlay_switch_off(overlay);
1170 if (ret != 0)
1171 goto out_unlock;
1172
1173 ret = check_overlay_possible_on_crtc(overlay, crtc);
1174 if (ret != 0)
1175 goto out_unlock;
1176
1177 overlay->crtc = crtc;
1178 crtc->overlay = overlay;
1179
1180 /* line too wide, i.e. one-line-mode */
1181 if (crtc->config->pipe_src_w > 1024 &&
1182 crtc->config->gmch_pfit.control & PFIT_ENABLE) {
1183 overlay->pfit_active = true;
1184 update_pfit_vscale_ratio(overlay);
1185 } else
1186 overlay->pfit_active = false;
1187 }
1188
1189 ret = check_overlay_dst(overlay, put_image_rec);
1190 if (ret != 0)
1191 goto out_unlock;
1192
1193 if (overlay->pfit_active) {
1194 params->dst_y = ((((u32)put_image_rec->dst_y) << 12) /
1195 overlay->pfit_vscale_ratio);
1196 /* shifting right rounds downwards, so add 1 */
1197 params->dst_h = ((((u32)put_image_rec->dst_height) << 12) /
1198 overlay->pfit_vscale_ratio) + 1;
1199 } else {
1200 params->dst_y = put_image_rec->dst_y;
1201 params->dst_h = put_image_rec->dst_height;
1202 }
1203 params->dst_x = put_image_rec->dst_x;
1204 params->dst_w = put_image_rec->dst_width;
1205
1206 params->src_w = put_image_rec->src_width;
1207 params->src_h = put_image_rec->src_height;
1208 params->src_scan_w = put_image_rec->src_scan_width;
1209 params->src_scan_h = put_image_rec->src_scan_height;
1210 if (params->src_scan_h > params->src_h ||
1211 params->src_scan_w > params->src_w) {
1212 ret = -EINVAL;
1213 goto out_unlock;
1214 }
1215
1216 ret = check_overlay_src(dev_priv, put_image_rec, new_bo);
1217 if (ret != 0)
1218 goto out_unlock;
1219 params->format = put_image_rec->flags & ~I915_OVERLAY_FLAGS_MASK;
1220 params->stride_Y = put_image_rec->stride_Y;
1221 params->stride_UV = put_image_rec->stride_UV;
1222 params->offset_Y = put_image_rec->offset_Y;
1223 params->offset_U = put_image_rec->offset_U;
1224 params->offset_V = put_image_rec->offset_V;
1225
1226 /* Check scaling after src size to prevent a divide-by-zero. */
1227 ret = check_overlay_scaling(params);
1228 if (ret != 0)
1229 goto out_unlock;
1230
1231 ret = intel_overlay_do_put_image(overlay, new_bo, params);
1232 if (ret != 0)
1233 goto out_unlock;
1234
1235 mutex_unlock(&dev->struct_mutex);
1236 drm_modeset_unlock_all(dev);
1237 i915_gem_object_put(new_bo);
1238
1239 kfree(params);
1240
1241 return 0;
1242
1243 out_unlock:
1244 mutex_unlock(&dev->struct_mutex);
1245 drm_modeset_unlock_all(dev);
1246 i915_gem_object_put(new_bo);
1247 out_free:
1248 kfree(params);
1249
1250 return ret;
1251 }
1252
1253 static void update_reg_attrs(struct intel_overlay *overlay,
1254 struct overlay_registers __iomem *regs)
1255 {
1256 iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff),
1257 &regs->OCLRC0);
1258 iowrite32(overlay->saturation, &regs->OCLRC1);
1259 }
1260
1261 static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
1262 {
1263 int i;
1264
1265 if (gamma1 & 0xff000000 || gamma2 & 0xff000000)
1266 return false;
1267
1268 for (i = 0; i < 3; i++) {
1269 if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
1270 return false;
1271 }
1272
1273 return true;
1274 }
1275
1276 static bool check_gamma5_errata(u32 gamma5)
1277 {
1278 int i;
1279
1280 for (i = 0; i < 3; i++) {
1281 if (((gamma5 >> i*8) & 0xff) == 0x80)
1282 return false;
1283 }
1284
1285 return true;
1286 }
1287
1288 static int check_gamma(struct drm_intel_overlay_attrs *attrs)
1289 {
1290 if (!check_gamma_bounds(0, attrs->gamma0) ||
1291 !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
1292 !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
1293 !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
1294 !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
1295 !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
1296 !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
1297 return -EINVAL;
1298
1299 if (!check_gamma5_errata(attrs->gamma5))
1300 return -EINVAL;
1301
1302 return 0;
1303 }
1304
1305 int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
1306 struct drm_file *file_priv)
1307 {
1308 struct drm_intel_overlay_attrs *attrs = data;
1309 struct drm_i915_private *dev_priv = to_i915(dev);
1310 struct intel_overlay *overlay;
1311 struct overlay_registers __iomem *regs;
1312 int ret;
1313
1314 overlay = dev_priv->overlay;
1315 if (!overlay) {
1316 DRM_DEBUG("userspace bug: no overlay\n");
1317 return -ENODEV;
1318 }
1319
1320 drm_modeset_lock_all(dev);
1321 mutex_lock(&dev->struct_mutex);
1322
1323 ret = -EINVAL;
1324 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1325 attrs->color_key = overlay->color_key;
1326 attrs->brightness = overlay->brightness;
1327 attrs->contrast = overlay->contrast;
1328 attrs->saturation = overlay->saturation;
1329
1330 if (!IS_GEN2(dev_priv)) {
1331 attrs->gamma0 = I915_READ(OGAMC0);
1332 attrs->gamma1 = I915_READ(OGAMC1);
1333 attrs->gamma2 = I915_READ(OGAMC2);
1334 attrs->gamma3 = I915_READ(OGAMC3);
1335 attrs->gamma4 = I915_READ(OGAMC4);
1336 attrs->gamma5 = I915_READ(OGAMC5);
1337 }
1338 } else {
1339 if (attrs->brightness < -128 || attrs->brightness > 127)
1340 goto out_unlock;
1341 if (attrs->contrast > 255)
1342 goto out_unlock;
1343 if (attrs->saturation > 1023)
1344 goto out_unlock;
1345
1346 overlay->color_key = attrs->color_key;
1347 overlay->brightness = attrs->brightness;
1348 overlay->contrast = attrs->contrast;
1349 overlay->saturation = attrs->saturation;
1350
1351 regs = intel_overlay_map_regs(overlay);
1352 if (!regs) {
1353 ret = -ENOMEM;
1354 goto out_unlock;
1355 }
1356
1357 update_reg_attrs(overlay, regs);
1358
1359 intel_overlay_unmap_regs(overlay, regs);
1360
1361 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1362 if (IS_GEN2(dev_priv))
1363 goto out_unlock;
1364
1365 if (overlay->active) {
1366 ret = -EBUSY;
1367 goto out_unlock;
1368 }
1369
1370 ret = check_gamma(attrs);
1371 if (ret)
1372 goto out_unlock;
1373
1374 I915_WRITE(OGAMC0, attrs->gamma0);
1375 I915_WRITE(OGAMC1, attrs->gamma1);
1376 I915_WRITE(OGAMC2, attrs->gamma2);
1377 I915_WRITE(OGAMC3, attrs->gamma3);
1378 I915_WRITE(OGAMC4, attrs->gamma4);
1379 I915_WRITE(OGAMC5, attrs->gamma5);
1380 }
1381 }
1382 overlay->color_key_enabled = (attrs->flags & I915_OVERLAY_DISABLE_DEST_COLORKEY) == 0;
1383
1384 ret = 0;
1385 out_unlock:
1386 mutex_unlock(&dev->struct_mutex);
1387 drm_modeset_unlock_all(dev);
1388
1389 return ret;
1390 }
1391
1392 void intel_setup_overlay(struct drm_i915_private *dev_priv)
1393 {
1394 struct intel_overlay *overlay;
1395 struct drm_i915_gem_object *reg_bo;
1396 struct overlay_registers __iomem *regs;
1397 struct i915_vma *vma = NULL;
1398 int ret;
1399
1400 if (!HAS_OVERLAY(dev_priv))
1401 return;
1402
1403 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
1404 if (!overlay)
1405 return;
1406
1407 mutex_lock(&dev_priv->drm.struct_mutex);
1408 if (WARN_ON(dev_priv->overlay))
1409 goto out_free;
1410
1411 overlay->i915 = dev_priv;
1412
1413 reg_bo = NULL;
1414 if (!OVERLAY_NEEDS_PHYSICAL(dev_priv))
1415 reg_bo = i915_gem_object_create_stolen(dev_priv, PAGE_SIZE);
1416 if (reg_bo == NULL)
1417 reg_bo = i915_gem_object_create(dev_priv, PAGE_SIZE);
1418 if (IS_ERR(reg_bo))
1419 goto out_free;
1420 overlay->reg_bo = reg_bo;
1421
1422 if (OVERLAY_NEEDS_PHYSICAL(dev_priv)) {
1423 ret = i915_gem_object_attach_phys(reg_bo, PAGE_SIZE);
1424 if (ret) {
1425 DRM_ERROR("failed to attach phys overlay regs\n");
1426 goto out_free_bo;
1427 }
1428 overlay->flip_addr = reg_bo->phys_handle->busaddr;
1429 } else {
1430 vma = i915_gem_object_ggtt_pin(reg_bo, NULL,
1431 0, PAGE_SIZE, PIN_MAPPABLE);
1432 if (IS_ERR(vma)) {
1433 DRM_ERROR("failed to pin overlay register bo\n");
1434 ret = PTR_ERR(vma);
1435 goto out_free_bo;
1436 }
1437 overlay->flip_addr = i915_ggtt_offset(vma);
1438
1439 ret = i915_gem_object_set_to_gtt_domain(reg_bo, true);
1440 if (ret) {
1441 DRM_ERROR("failed to move overlay register bo into the GTT\n");
1442 goto out_unpin_bo;
1443 }
1444 }
1445
1446 /* init all values */
1447 overlay->color_key = 0x0101fe;
1448 overlay->color_key_enabled = true;
1449 overlay->brightness = -19;
1450 overlay->contrast = 75;
1451 overlay->saturation = 146;
1452
1453 init_request_active(&overlay->last_flip, NULL);
1454
1455 regs = intel_overlay_map_regs(overlay);
1456 if (!regs)
1457 goto out_unpin_bo;
1458
1459 memset_io(regs, 0, sizeof(struct overlay_registers));
1460 update_polyphase_filter(regs);
1461 update_reg_attrs(overlay, regs);
1462
1463 intel_overlay_unmap_regs(overlay, regs);
1464
1465 dev_priv->overlay = overlay;
1466 mutex_unlock(&dev_priv->drm.struct_mutex);
1467 DRM_INFO("initialized overlay support\n");
1468 return;
1469
1470 out_unpin_bo:
1471 if (vma)
1472 i915_vma_unpin(vma);
1473 out_free_bo:
1474 i915_gem_object_put(reg_bo);
1475 out_free:
1476 mutex_unlock(&dev_priv->drm.struct_mutex);
1477 kfree(overlay);
1478 return;
1479 }
1480
1481 void intel_cleanup_overlay(struct drm_i915_private *dev_priv)
1482 {
1483 if (!dev_priv->overlay)
1484 return;
1485
1486 /* The bo's should be free'd by the generic code already.
1487 * Furthermore modesetting teardown happens beforehand so the
1488 * hardware should be off already */
1489 WARN_ON(dev_priv->overlay->active);
1490
1491 i915_gem_object_put(dev_priv->overlay->reg_bo);
1492 kfree(dev_priv->overlay);
1493 }
1494
1495 #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
1496
1497 struct intel_overlay_error_state {
1498 struct overlay_registers regs;
1499 unsigned long base;
1500 u32 dovsta;
1501 u32 isr;
1502 };
1503
1504 static struct overlay_registers __iomem *
1505 intel_overlay_map_regs_atomic(struct intel_overlay *overlay)
1506 {
1507 struct drm_i915_private *dev_priv = overlay->i915;
1508 struct overlay_registers __iomem *regs;
1509
1510 if (OVERLAY_NEEDS_PHYSICAL(dev_priv))
1511 /* Cast to make sparse happy, but it's wc memory anyway, so
1512 * equivalent to the wc io mapping on X86. */
1513 regs = (struct overlay_registers __iomem *)
1514 overlay->reg_bo->phys_handle->vaddr;
1515 else
1516 regs = io_mapping_map_atomic_wc(&dev_priv->ggtt.mappable,
1517 overlay->flip_addr);
1518
1519 return regs;
1520 }
1521
1522 static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay,
1523 struct overlay_registers __iomem *regs)
1524 {
1525 if (!OVERLAY_NEEDS_PHYSICAL(overlay->i915))
1526 io_mapping_unmap_atomic(regs);
1527 }
1528
1529 struct intel_overlay_error_state *
1530 intel_overlay_capture_error_state(struct drm_i915_private *dev_priv)
1531 {
1532 struct intel_overlay *overlay = dev_priv->overlay;
1533 struct intel_overlay_error_state *error;
1534 struct overlay_registers __iomem *regs;
1535
1536 if (!overlay || !overlay->active)
1537 return NULL;
1538
1539 error = kmalloc(sizeof(*error), GFP_ATOMIC);
1540 if (error == NULL)
1541 return NULL;
1542
1543 error->dovsta = I915_READ(DOVSTA);
1544 error->isr = I915_READ(ISR);
1545 error->base = overlay->flip_addr;
1546
1547 regs = intel_overlay_map_regs_atomic(overlay);
1548 if (!regs)
1549 goto err;
1550
1551 memcpy_fromio(&error->regs, regs, sizeof(struct overlay_registers));
1552 intel_overlay_unmap_regs_atomic(overlay, regs);
1553
1554 return error;
1555
1556 err:
1557 kfree(error);
1558 return NULL;
1559 }
1560
1561 void
1562 intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
1563 struct intel_overlay_error_state *error)
1564 {
1565 i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
1566 error->dovsta, error->isr);
1567 i915_error_printf(m, " Register file at 0x%08lx:\n",
1568 error->base);
1569
1570 #define P(x) i915_error_printf(m, " " #x ": 0x%08x\n", error->regs.x)
1571 P(OBUF_0Y);
1572 P(OBUF_1Y);
1573 P(OBUF_0U);
1574 P(OBUF_0V);
1575 P(OBUF_1U);
1576 P(OBUF_1V);
1577 P(OSTRIDE);
1578 P(YRGB_VPH);
1579 P(UV_VPH);
1580 P(HORZ_PH);
1581 P(INIT_PHS);
1582 P(DWINPOS);
1583 P(DWINSZ);
1584 P(SWIDTH);
1585 P(SWIDTHSW);
1586 P(SHEIGHT);
1587 P(YRGBSCALE);
1588 P(UVSCALE);
1589 P(OCLRC0);
1590 P(OCLRC1);
1591 P(DCLRKV);
1592 P(DCLRKM);
1593 P(SCLRKVH);
1594 P(SCLRKVL);
1595 P(SCLRKEN);
1596 P(OCONFIG);
1597 P(OCMD);
1598 P(OSTART_0Y);
1599 P(OSTART_1Y);
1600 P(OSTART_0U);
1601 P(OSTART_0V);
1602 P(OSTART_1U);
1603 P(OSTART_1V);
1604 P(OTILEOFF_0Y);
1605 P(OTILEOFF_1Y);
1606 P(OTILEOFF_0U);
1607 P(OTILEOFF_0V);
1608 P(OTILEOFF_1U);
1609 P(OTILEOFF_1V);
1610 P(FASTHSCALE);
1611 P(UVSCALEV);
1612 #undef P
1613 }
1614
1615 #endif
Linux with added FPC-III support