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
29 #include <drm/drm_fourcc.h>
30
31 #include "gem/i915_gem_internal.h"
32 #include "gem/i915_gem_pm.h"
33 #include "gt/intel_gpu_commands.h"
34 #include "gt/intel_ring.h"
35
36 #include "i915_drv.h"
37 #include "i915_reg.h"
38 #include "intel_de.h"
39 #include "intel_display_types.h"
40 #include "intel_frontbuffer.h"
41 #include "intel_overlay.h"
42 #include "intel_pci_config.h"
43
44 /* Limits for overlay size. According to intel doc, the real limits are:
45 * Y width: 4095, UV width (planar): 2047, Y height: 2047,
46 * UV width (planar): * 1023. But the xorg thinks 2048 for height and width. Use
47 * the mininum of both. */
48 #define IMAGE_MAX_WIDTH 2048
49 #define IMAGE_MAX_HEIGHT 2046 /* 2 * 1023 */
50 /* on 830 and 845 these large limits result in the card hanging */
51 #define IMAGE_MAX_WIDTH_LEGACY 1024
52 #define IMAGE_MAX_HEIGHT_LEGACY 1088
53
54 /* overlay register definitions */
55 /* OCMD register */
56 #define OCMD_TILED_SURFACE (0x1<<19)
57 #define OCMD_MIRROR_MASK (0x3<<17)
58 #define OCMD_MIRROR_MODE (0x3<<17)
59 #define OCMD_MIRROR_HORIZONTAL (0x1<<17)
60 #define OCMD_MIRROR_VERTICAL (0x2<<17)
61 #define OCMD_MIRROR_BOTH (0x3<<17)
62 #define OCMD_BYTEORDER_MASK (0x3<<14) /* zero for YUYV or FOURCC YUY2 */
63 #define OCMD_UV_SWAP (0x1<<14) /* YVYU */
64 #define OCMD_Y_SWAP (0x2<<14) /* UYVY or FOURCC UYVY */
65 #define OCMD_Y_AND_UV_SWAP (0x3<<14) /* VYUY */
66 #define OCMD_SOURCE_FORMAT_MASK (0xf<<10)
67 #define OCMD_RGB_888 (0x1<<10) /* not in i965 Intel docs */
68 #define OCMD_RGB_555 (0x2<<10) /* not in i965 Intel docs */
69 #define OCMD_RGB_565 (0x3<<10) /* not in i965 Intel docs */
70 #define OCMD_YUV_422_PACKED (0x8<<10)
71 #define OCMD_YUV_411_PACKED (0x9<<10) /* not in i965 Intel docs */
72 #define OCMD_YUV_420_PLANAR (0xc<<10)
73 #define OCMD_YUV_422_PLANAR (0xd<<10)
74 #define OCMD_YUV_410_PLANAR (0xe<<10) /* also 411 */
75 #define OCMD_TVSYNCFLIP_PARITY (0x1<<9)
76 #define OCMD_TVSYNCFLIP_ENABLE (0x1<<7)
77 #define OCMD_BUF_TYPE_MASK (0x1<<5)
78 #define OCMD_BUF_TYPE_FRAME (0x0<<5)
79 #define OCMD_BUF_TYPE_FIELD (0x1<<5)
80 #define OCMD_TEST_MODE (0x1<<4)
81 #define OCMD_BUFFER_SELECT (0x3<<2)
82 #define OCMD_BUFFER0 (0x0<<2)
83 #define OCMD_BUFFER1 (0x1<<2)
84 #define OCMD_FIELD_SELECT (0x1<<2)
85 #define OCMD_FIELD0 (0x0<<1)
86 #define OCMD_FIELD1 (0x1<<1)
87 #define OCMD_ENABLE (0x1<<0)
88
89 /* OCONFIG register */
90 #define OCONF_PIPE_MASK (0x1<<18)
91 #define OCONF_PIPE_A (0x0<<18)
92 #define OCONF_PIPE_B (0x1<<18)
93 #define OCONF_GAMMA2_ENABLE (0x1<<16)
94 #define OCONF_CSC_MODE_BT601 (0x0<<5)
95 #define OCONF_CSC_MODE_BT709 (0x1<<5)
96 #define OCONF_CSC_BYPASS (0x1<<4)
97 #define OCONF_CC_OUT_8BIT (0x1<<3)
98 #define OCONF_TEST_MODE (0x1<<2)
99 #define OCONF_THREE_LINE_BUFFER (0x1<<0)
100 #define OCONF_TWO_LINE_BUFFER (0x0<<0)
101
102 /* DCLRKM (dst-key) register */
103 #define DST_KEY_ENABLE (0x1<<31)
104 #define CLK_RGB24_MASK 0x0
105 #define CLK_RGB16_MASK 0x070307
106 #define CLK_RGB15_MASK 0x070707
107
108 #define RGB30_TO_COLORKEY(c) \
109 ((((c) & 0x3fc00000) >> 6) | (((c) & 0x000ff000) >> 4) | (((c) & 0x000003fc) >> 2))
110 #define RGB16_TO_COLORKEY(c) \
111 ((((c) & 0xf800) << 8) | (((c) & 0x07e0) << 5) | (((c) & 0x001f) << 3))
112 #define RGB15_TO_COLORKEY(c) \
113 ((((c) & 0x7c00) << 9) | (((c) & 0x03e0) << 6) | (((c) & 0x001f) << 3))
114 #define RGB8I_TO_COLORKEY(c) \
115 ((((c) & 0xff) << 16) | (((c) & 0xff) << 8) | (((c) & 0xff) << 0))
116
117 /* overlay flip addr flag */
118 #define OFC_UPDATE 0x1
119
120 /* polyphase filter coefficients */
121 #define N_HORIZ_Y_TAPS 5
122 #define N_VERT_Y_TAPS 3
123 #define N_HORIZ_UV_TAPS 3
124 #define N_VERT_UV_TAPS 3
125 #define N_PHASES 17
126 #define MAX_TAPS 5
127
128 /* memory bufferd overlay registers */
129 struct overlay_registers {
130 u32 OBUF_0Y;
131 u32 OBUF_1Y;
132 u32 OBUF_0U;
133 u32 OBUF_0V;
134 u32 OBUF_1U;
135 u32 OBUF_1V;
136 u32 OSTRIDE;
137 u32 YRGB_VPH;
138 u32 UV_VPH;
139 u32 HORZ_PH;
140 u32 INIT_PHS;
141 u32 DWINPOS;
142 u32 DWINSZ;
143 u32 SWIDTH;
144 u32 SWIDTHSW;
145 u32 SHEIGHT;
146 u32 YRGBSCALE;
147 u32 UVSCALE;
148 u32 OCLRC0;
149 u32 OCLRC1;
150 u32 DCLRKV;
151 u32 DCLRKM;
152 u32 SCLRKVH;
153 u32 SCLRKVL;
154 u32 SCLRKEN;
155 u32 OCONFIG;
156 u32 OCMD;
157 u32 RESERVED1; /* 0x6C */
158 u32 OSTART_0Y;
159 u32 OSTART_1Y;
160 u32 OSTART_0U;
161 u32 OSTART_0V;
162 u32 OSTART_1U;
163 u32 OSTART_1V;
164 u32 OTILEOFF_0Y;
165 u32 OTILEOFF_1Y;
166 u32 OTILEOFF_0U;
167 u32 OTILEOFF_0V;
168 u32 OTILEOFF_1U;
169 u32 OTILEOFF_1V;
170 u32 FASTHSCALE; /* 0xA0 */
171 u32 UVSCALEV; /* 0xA4 */
172 u32 RESERVEDC[(0x200 - 0xA8) / 4]; /* 0xA8 - 0x1FC */
173 u16 Y_VCOEFS[N_VERT_Y_TAPS * N_PHASES]; /* 0x200 */
174 u16 RESERVEDD[0x100 / 2 - N_VERT_Y_TAPS * N_PHASES];
175 u16 Y_HCOEFS[N_HORIZ_Y_TAPS * N_PHASES]; /* 0x300 */
176 u16 RESERVEDE[0x200 / 2 - N_HORIZ_Y_TAPS * N_PHASES];
177 u16 UV_VCOEFS[N_VERT_UV_TAPS * N_PHASES]; /* 0x500 */
178 u16 RESERVEDF[0x100 / 2 - N_VERT_UV_TAPS * N_PHASES];
179 u16 UV_HCOEFS[N_HORIZ_UV_TAPS * N_PHASES]; /* 0x600 */
180 u16 RESERVEDG[0x100 / 2 - N_HORIZ_UV_TAPS * N_PHASES];
181 };
182
183 struct intel_overlay {
184 struct drm_i915_private *i915;
185 struct intel_context *context;
186 struct intel_crtc *crtc;
187 struct i915_vma *vma;
188 struct i915_vma *old_vma;
189 struct intel_frontbuffer *frontbuffer;
190 bool active;
191 bool pfit_active;
192 u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
193 u32 color_key:24;
194 u32 color_key_enabled:1;
195 u32 brightness, contrast, saturation;
196 u32 old_xscale, old_yscale;
197 /* register access */
198 struct drm_i915_gem_object *reg_bo;
199 struct overlay_registers __iomem *regs;
200 u32 flip_addr;
201 /* flip handling */
202 struct i915_active last_flip;
203 void (*flip_complete)(struct intel_overlay *ovl);
204 };
205
i830_overlay_clock_gating(struct drm_i915_private * dev_priv,bool enable)206 static void i830_overlay_clock_gating(struct drm_i915_private *dev_priv,
207 bool enable)
208 {
209 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
210 u8 val;
211
212 /* WA_OVERLAY_CLKGATE:alm */
213 if (enable)
214 intel_de_write(dev_priv, DSPCLK_GATE_D, 0);
215 else
216 intel_de_write(dev_priv, DSPCLK_GATE_D,
217 OVRUNIT_CLOCK_GATE_DISABLE);
218
219 /* WA_DISABLE_L2CACHE_CLOCK_GATING:alm */
220 pci_bus_read_config_byte(pdev->bus,
221 PCI_DEVFN(0, 0), I830_CLOCK_GATE, &val);
222 if (enable)
223 val &= ~I830_L2_CACHE_CLOCK_GATE_DISABLE;
224 else
225 val |= I830_L2_CACHE_CLOCK_GATE_DISABLE;
226 pci_bus_write_config_byte(pdev->bus,
227 PCI_DEVFN(0, 0), I830_CLOCK_GATE, val);
228 }
229
230 static struct i915_request *
alloc_request(struct intel_overlay * overlay,void (* fn)(struct intel_overlay *))231 alloc_request(struct intel_overlay *overlay, void (*fn)(struct intel_overlay *))
232 {
233 struct i915_request *rq;
234 int err;
235
236 overlay->flip_complete = fn;
237
238 rq = i915_request_create(overlay->context);
239 if (IS_ERR(rq))
240 return rq;
241
242 err = i915_active_add_request(&overlay->last_flip, rq);
243 if (err) {
244 i915_request_add(rq);
245 return ERR_PTR(err);
246 }
247
248 return rq;
249 }
250
251 /* overlay needs to be disable in OCMD reg */
intel_overlay_on(struct intel_overlay * overlay)252 static int intel_overlay_on(struct intel_overlay *overlay)
253 {
254 struct drm_i915_private *dev_priv = overlay->i915;
255 struct i915_request *rq;
256 u32 *cs;
257
258 drm_WARN_ON(&dev_priv->drm, overlay->active);
259
260 rq = alloc_request(overlay, NULL);
261 if (IS_ERR(rq))
262 return PTR_ERR(rq);
263
264 cs = intel_ring_begin(rq, 4);
265 if (IS_ERR(cs)) {
266 i915_request_add(rq);
267 return PTR_ERR(cs);
268 }
269
270 overlay->active = true;
271
272 if (IS_I830(dev_priv))
273 i830_overlay_clock_gating(dev_priv, false);
274
275 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_ON;
276 *cs++ = overlay->flip_addr | OFC_UPDATE;
277 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
278 *cs++ = MI_NOOP;
279 intel_ring_advance(rq, cs);
280
281 i915_request_add(rq);
282
283 return i915_active_wait(&overlay->last_flip);
284 }
285
intel_overlay_flip_prepare(struct intel_overlay * overlay,struct i915_vma * vma)286 static void intel_overlay_flip_prepare(struct intel_overlay *overlay,
287 struct i915_vma *vma)
288 {
289 enum pipe pipe = overlay->crtc->pipe;
290 struct intel_frontbuffer *frontbuffer = NULL;
291
292 drm_WARN_ON(&overlay->i915->drm, overlay->old_vma);
293
294 if (vma)
295 frontbuffer = intel_frontbuffer_get(vma->obj);
296
297 intel_frontbuffer_track(overlay->frontbuffer, frontbuffer,
298 INTEL_FRONTBUFFER_OVERLAY(pipe));
299
300 if (overlay->frontbuffer)
301 intel_frontbuffer_put(overlay->frontbuffer);
302 overlay->frontbuffer = frontbuffer;
303
304 intel_frontbuffer_flip_prepare(overlay->i915,
305 INTEL_FRONTBUFFER_OVERLAY(pipe));
306
307 overlay->old_vma = overlay->vma;
308 if (vma)
309 overlay->vma = i915_vma_get(vma);
310 else
311 overlay->vma = NULL;
312 }
313
314 /* overlay needs to be enabled in OCMD reg */
intel_overlay_continue(struct intel_overlay * overlay,struct i915_vma * vma,bool load_polyphase_filter)315 static int intel_overlay_continue(struct intel_overlay *overlay,
316 struct i915_vma *vma,
317 bool load_polyphase_filter)
318 {
319 struct drm_i915_private *dev_priv = overlay->i915;
320 struct i915_request *rq;
321 u32 flip_addr = overlay->flip_addr;
322 u32 tmp, *cs;
323
324 drm_WARN_ON(&dev_priv->drm, !overlay->active);
325
326 if (load_polyphase_filter)
327 flip_addr |= OFC_UPDATE;
328
329 /* check for underruns */
330 tmp = intel_de_read(dev_priv, DOVSTA);
331 if (tmp & (1 << 17))
332 drm_dbg(&dev_priv->drm, "overlay underrun, DOVSTA: %x\n", tmp);
333
334 rq = alloc_request(overlay, NULL);
335 if (IS_ERR(rq))
336 return PTR_ERR(rq);
337
338 cs = intel_ring_begin(rq, 2);
339 if (IS_ERR(cs)) {
340 i915_request_add(rq);
341 return PTR_ERR(cs);
342 }
343
344 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE;
345 *cs++ = flip_addr;
346 intel_ring_advance(rq, cs);
347
348 intel_overlay_flip_prepare(overlay, vma);
349 i915_request_add(rq);
350
351 return 0;
352 }
353
intel_overlay_release_old_vma(struct intel_overlay * overlay)354 static void intel_overlay_release_old_vma(struct intel_overlay *overlay)
355 {
356 struct i915_vma *vma;
357
358 vma = fetch_and_zero(&overlay->old_vma);
359 if (drm_WARN_ON(&overlay->i915->drm, !vma))
360 return;
361
362 intel_frontbuffer_flip_complete(overlay->i915,
363 INTEL_FRONTBUFFER_OVERLAY(overlay->crtc->pipe));
364
365 i915_vma_unpin(vma);
366 i915_vma_put(vma);
367 }
368
369 static void
intel_overlay_release_old_vid_tail(struct intel_overlay * overlay)370 intel_overlay_release_old_vid_tail(struct intel_overlay *overlay)
371 {
372 intel_overlay_release_old_vma(overlay);
373 }
374
intel_overlay_off_tail(struct intel_overlay * overlay)375 static void intel_overlay_off_tail(struct intel_overlay *overlay)
376 {
377 struct drm_i915_private *dev_priv = overlay->i915;
378
379 intel_overlay_release_old_vma(overlay);
380
381 overlay->crtc->overlay = NULL;
382 overlay->crtc = NULL;
383 overlay->active = false;
384
385 if (IS_I830(dev_priv))
386 i830_overlay_clock_gating(dev_priv, true);
387 }
388
intel_overlay_last_flip_retire(struct i915_active * active)389 static void intel_overlay_last_flip_retire(struct i915_active *active)
390 {
391 struct intel_overlay *overlay =
392 container_of(active, typeof(*overlay), last_flip);
393
394 if (overlay->flip_complete)
395 overlay->flip_complete(overlay);
396 }
397
398 /* overlay needs to be disabled in OCMD reg */
intel_overlay_off(struct intel_overlay * overlay)399 static int intel_overlay_off(struct intel_overlay *overlay)
400 {
401 struct i915_request *rq;
402 u32 *cs, flip_addr = overlay->flip_addr;
403
404 drm_WARN_ON(&overlay->i915->drm, !overlay->active);
405
406 /* According to intel docs the overlay hw may hang (when switching
407 * off) without loading the filter coeffs. It is however unclear whether
408 * this applies to the disabling of the overlay or to the switching off
409 * of the hw. Do it in both cases */
410 flip_addr |= OFC_UPDATE;
411
412 rq = alloc_request(overlay, intel_overlay_off_tail);
413 if (IS_ERR(rq))
414 return PTR_ERR(rq);
415
416 cs = intel_ring_begin(rq, 6);
417 if (IS_ERR(cs)) {
418 i915_request_add(rq);
419 return PTR_ERR(cs);
420 }
421
422 /* wait for overlay to go idle */
423 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE;
424 *cs++ = flip_addr;
425 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
426
427 /* turn overlay off */
428 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_OFF;
429 *cs++ = flip_addr;
430 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
431
432 intel_ring_advance(rq, cs);
433
434 intel_overlay_flip_prepare(overlay, NULL);
435 i915_request_add(rq);
436
437 return i915_active_wait(&overlay->last_flip);
438 }
439
440 /* recover from an interruption due to a signal
441 * We have to be careful not to repeat work forever an make forward progess. */
intel_overlay_recover_from_interrupt(struct intel_overlay * overlay)442 static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay)
443 {
444 return i915_active_wait(&overlay->last_flip);
445 }
446
447 /* Wait for pending overlay flip and release old frame.
448 * Needs to be called before the overlay register are changed
449 * via intel_overlay_(un)map_regs
450 */
intel_overlay_release_old_vid(struct intel_overlay * overlay)451 static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
452 {
453 struct drm_i915_private *dev_priv = overlay->i915;
454 struct i915_request *rq;
455 u32 *cs;
456
457 /*
458 * Only wait if there is actually an old frame to release to
459 * guarantee forward progress.
460 */
461 if (!overlay->old_vma)
462 return 0;
463
464 if (!(intel_de_read(dev_priv, GEN2_ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT)) {
465 intel_overlay_release_old_vid_tail(overlay);
466 return 0;
467 }
468
469 rq = alloc_request(overlay, intel_overlay_release_old_vid_tail);
470 if (IS_ERR(rq))
471 return PTR_ERR(rq);
472
473 cs = intel_ring_begin(rq, 2);
474 if (IS_ERR(cs)) {
475 i915_request_add(rq);
476 return PTR_ERR(cs);
477 }
478
479 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
480 *cs++ = MI_NOOP;
481 intel_ring_advance(rq, cs);
482
483 i915_request_add(rq);
484
485 return i915_active_wait(&overlay->last_flip);
486 }
487
intel_overlay_reset(struct drm_i915_private * dev_priv)488 void intel_overlay_reset(struct drm_i915_private *dev_priv)
489 {
490 struct intel_overlay *overlay = dev_priv->overlay;
491
492 if (!overlay)
493 return;
494
495 overlay->old_xscale = 0;
496 overlay->old_yscale = 0;
497 overlay->crtc = NULL;
498 overlay->active = false;
499 }
500
packed_depth_bytes(u32 format)501 static int packed_depth_bytes(u32 format)
502 {
503 switch (format & I915_OVERLAY_DEPTH_MASK) {
504 case I915_OVERLAY_YUV422:
505 return 4;
506 case I915_OVERLAY_YUV411:
507 /* return 6; not implemented */
508 default:
509 return -EINVAL;
510 }
511 }
512
packed_width_bytes(u32 format,short width)513 static int packed_width_bytes(u32 format, short width)
514 {
515 switch (format & I915_OVERLAY_DEPTH_MASK) {
516 case I915_OVERLAY_YUV422:
517 return width << 1;
518 default:
519 return -EINVAL;
520 }
521 }
522
uv_hsubsampling(u32 format)523 static int uv_hsubsampling(u32 format)
524 {
525 switch (format & I915_OVERLAY_DEPTH_MASK) {
526 case I915_OVERLAY_YUV422:
527 case I915_OVERLAY_YUV420:
528 return 2;
529 case I915_OVERLAY_YUV411:
530 case I915_OVERLAY_YUV410:
531 return 4;
532 default:
533 return -EINVAL;
534 }
535 }
536
uv_vsubsampling(u32 format)537 static int uv_vsubsampling(u32 format)
538 {
539 switch (format & I915_OVERLAY_DEPTH_MASK) {
540 case I915_OVERLAY_YUV420:
541 case I915_OVERLAY_YUV410:
542 return 2;
543 case I915_OVERLAY_YUV422:
544 case I915_OVERLAY_YUV411:
545 return 1;
546 default:
547 return -EINVAL;
548 }
549 }
550
calc_swidthsw(struct drm_i915_private * dev_priv,u32 offset,u32 width)551 static u32 calc_swidthsw(struct drm_i915_private *dev_priv, u32 offset, u32 width)
552 {
553 u32 sw;
554
555 if (DISPLAY_VER(dev_priv) == 2)
556 sw = ALIGN((offset & 31) + width, 32);
557 else
558 sw = ALIGN((offset & 63) + width, 64);
559
560 if (sw == 0)
561 return 0;
562
563 return (sw - 32) >> 3;
564 }
565
566 static const u16 y_static_hcoeffs[N_PHASES][N_HORIZ_Y_TAPS] = {
567 [ 0] = { 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0, },
568 [ 1] = { 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440, },
569 [ 2] = { 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0, },
570 [ 3] = { 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380, },
571 [ 4] = { 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320, },
572 [ 5] = { 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0, },
573 [ 6] = { 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260, },
574 [ 7] = { 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200, },
575 [ 8] = { 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0, },
576 [ 9] = { 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160, },
577 [10] = { 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120, },
578 [11] = { 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0, },
579 [12] = { 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0, },
580 [13] = { 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060, },
581 [14] = { 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040, },
582 [15] = { 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020, },
583 [16] = { 0xb000, 0x3000, 0x0800, 0x3000, 0xb000, },
584 };
585
586 static const u16 uv_static_hcoeffs[N_PHASES][N_HORIZ_UV_TAPS] = {
587 [ 0] = { 0x3000, 0x1800, 0x1800, },
588 [ 1] = { 0xb000, 0x18d0, 0x2e60, },
589 [ 2] = { 0xb000, 0x1990, 0x2ce0, },
590 [ 3] = { 0xb020, 0x1a68, 0x2b40, },
591 [ 4] = { 0xb040, 0x1b20, 0x29e0, },
592 [ 5] = { 0xb060, 0x1bd8, 0x2880, },
593 [ 6] = { 0xb080, 0x1c88, 0x3e60, },
594 [ 7] = { 0xb0a0, 0x1d28, 0x3c00, },
595 [ 8] = { 0xb0c0, 0x1db8, 0x39e0, },
596 [ 9] = { 0xb0e0, 0x1e40, 0x37e0, },
597 [10] = { 0xb100, 0x1eb8, 0x3620, },
598 [11] = { 0xb100, 0x1f18, 0x34a0, },
599 [12] = { 0xb100, 0x1f68, 0x3360, },
600 [13] = { 0xb0e0, 0x1fa8, 0x3240, },
601 [14] = { 0xb0c0, 0x1fe0, 0x3140, },
602 [15] = { 0xb060, 0x1ff0, 0x30a0, },
603 [16] = { 0x3000, 0x0800, 0x3000, },
604 };
605
update_polyphase_filter(struct overlay_registers __iomem * regs)606 static void update_polyphase_filter(struct overlay_registers __iomem *regs)
607 {
608 memcpy_toio(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs));
609 memcpy_toio(regs->UV_HCOEFS, uv_static_hcoeffs,
610 sizeof(uv_static_hcoeffs));
611 }
612
update_scaling_factors(struct intel_overlay * overlay,struct overlay_registers __iomem * regs,struct drm_intel_overlay_put_image * params)613 static bool update_scaling_factors(struct intel_overlay *overlay,
614 struct overlay_registers __iomem *regs,
615 struct drm_intel_overlay_put_image *params)
616 {
617 /* fixed point with a 12 bit shift */
618 u32 xscale, yscale, xscale_UV, yscale_UV;
619 #define FP_SHIFT 12
620 #define FRACT_MASK 0xfff
621 bool scale_changed = false;
622 int uv_hscale = uv_hsubsampling(params->flags);
623 int uv_vscale = uv_vsubsampling(params->flags);
624
625 if (params->dst_width > 1)
626 xscale = ((params->src_scan_width - 1) << FP_SHIFT) /
627 params->dst_width;
628 else
629 xscale = 1 << FP_SHIFT;
630
631 if (params->dst_height > 1)
632 yscale = ((params->src_scan_height - 1) << FP_SHIFT) /
633 params->dst_height;
634 else
635 yscale = 1 << FP_SHIFT;
636
637 /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/
638 xscale_UV = xscale/uv_hscale;
639 yscale_UV = yscale/uv_vscale;
640 /* make the Y scale to UV scale ratio an exact multiply */
641 xscale = xscale_UV * uv_hscale;
642 yscale = yscale_UV * uv_vscale;
643 /*} else {
644 xscale_UV = 0;
645 yscale_UV = 0;
646 }*/
647
648 if (xscale != overlay->old_xscale || yscale != overlay->old_yscale)
649 scale_changed = true;
650 overlay->old_xscale = xscale;
651 overlay->old_yscale = yscale;
652
653 iowrite32(((yscale & FRACT_MASK) << 20) |
654 ((xscale >> FP_SHIFT) << 16) |
655 ((xscale & FRACT_MASK) << 3),
656 ®s->YRGBSCALE);
657
658 iowrite32(((yscale_UV & FRACT_MASK) << 20) |
659 ((xscale_UV >> FP_SHIFT) << 16) |
660 ((xscale_UV & FRACT_MASK) << 3),
661 ®s->UVSCALE);
662
663 iowrite32((((yscale >> FP_SHIFT) << 16) |
664 ((yscale_UV >> FP_SHIFT) << 0)),
665 ®s->UVSCALEV);
666
667 if (scale_changed)
668 update_polyphase_filter(regs);
669
670 return scale_changed;
671 }
672
update_colorkey(struct intel_overlay * overlay,struct overlay_registers __iomem * regs)673 static void update_colorkey(struct intel_overlay *overlay,
674 struct overlay_registers __iomem *regs)
675 {
676 const struct intel_plane_state *state =
677 to_intel_plane_state(overlay->crtc->base.primary->state);
678 u32 key = overlay->color_key;
679 u32 format = 0;
680 u32 flags = 0;
681
682 if (overlay->color_key_enabled)
683 flags |= DST_KEY_ENABLE;
684
685 if (state->uapi.visible)
686 format = state->hw.fb->format->format;
687
688 switch (format) {
689 case DRM_FORMAT_C8:
690 key = RGB8I_TO_COLORKEY(key);
691 flags |= CLK_RGB24_MASK;
692 break;
693 case DRM_FORMAT_XRGB1555:
694 key = RGB15_TO_COLORKEY(key);
695 flags |= CLK_RGB15_MASK;
696 break;
697 case DRM_FORMAT_RGB565:
698 key = RGB16_TO_COLORKEY(key);
699 flags |= CLK_RGB16_MASK;
700 break;
701 case DRM_FORMAT_XRGB2101010:
702 case DRM_FORMAT_XBGR2101010:
703 key = RGB30_TO_COLORKEY(key);
704 flags |= CLK_RGB24_MASK;
705 break;
706 default:
707 flags |= CLK_RGB24_MASK;
708 break;
709 }
710
711 iowrite32(key, ®s->DCLRKV);
712 iowrite32(flags, ®s->DCLRKM);
713 }
714
overlay_cmd_reg(struct drm_intel_overlay_put_image * params)715 static u32 overlay_cmd_reg(struct drm_intel_overlay_put_image *params)
716 {
717 u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0;
718
719 if (params->flags & I915_OVERLAY_YUV_PLANAR) {
720 switch (params->flags & I915_OVERLAY_DEPTH_MASK) {
721 case I915_OVERLAY_YUV422:
722 cmd |= OCMD_YUV_422_PLANAR;
723 break;
724 case I915_OVERLAY_YUV420:
725 cmd |= OCMD_YUV_420_PLANAR;
726 break;
727 case I915_OVERLAY_YUV411:
728 case I915_OVERLAY_YUV410:
729 cmd |= OCMD_YUV_410_PLANAR;
730 break;
731 }
732 } else { /* YUV packed */
733 switch (params->flags & I915_OVERLAY_DEPTH_MASK) {
734 case I915_OVERLAY_YUV422:
735 cmd |= OCMD_YUV_422_PACKED;
736 break;
737 case I915_OVERLAY_YUV411:
738 cmd |= OCMD_YUV_411_PACKED;
739 break;
740 }
741
742 switch (params->flags & I915_OVERLAY_SWAP_MASK) {
743 case I915_OVERLAY_NO_SWAP:
744 break;
745 case I915_OVERLAY_UV_SWAP:
746 cmd |= OCMD_UV_SWAP;
747 break;
748 case I915_OVERLAY_Y_SWAP:
749 cmd |= OCMD_Y_SWAP;
750 break;
751 case I915_OVERLAY_Y_AND_UV_SWAP:
752 cmd |= OCMD_Y_AND_UV_SWAP;
753 break;
754 }
755 }
756
757 return cmd;
758 }
759
intel_overlay_pin_fb(struct drm_i915_gem_object * new_bo)760 static struct i915_vma *intel_overlay_pin_fb(struct drm_i915_gem_object *new_bo)
761 {
762 struct i915_gem_ww_ctx ww;
763 struct i915_vma *vma;
764 int ret;
765
766 i915_gem_ww_ctx_init(&ww, true);
767 retry:
768 ret = i915_gem_object_lock(new_bo, &ww);
769 if (!ret) {
770 vma = i915_gem_object_pin_to_display_plane(new_bo, &ww, 0,
771 NULL, PIN_MAPPABLE);
772 ret = PTR_ERR_OR_ZERO(vma);
773 }
774 if (ret == -EDEADLK) {
775 ret = i915_gem_ww_ctx_backoff(&ww);
776 if (!ret)
777 goto retry;
778 }
779 i915_gem_ww_ctx_fini(&ww);
780 if (ret)
781 return ERR_PTR(ret);
782
783 return vma;
784 }
785
intel_overlay_do_put_image(struct intel_overlay * overlay,struct drm_i915_gem_object * new_bo,struct drm_intel_overlay_put_image * params)786 static int intel_overlay_do_put_image(struct intel_overlay *overlay,
787 struct drm_i915_gem_object *new_bo,
788 struct drm_intel_overlay_put_image *params)
789 {
790 struct overlay_registers __iomem *regs = overlay->regs;
791 struct drm_i915_private *dev_priv = overlay->i915;
792 u32 swidth, swidthsw, sheight, ostride;
793 enum pipe pipe = overlay->crtc->pipe;
794 bool scale_changed = false;
795 struct i915_vma *vma;
796 int ret, tmp_width;
797
798 drm_WARN_ON(&dev_priv->drm,
799 !drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
800
801 ret = intel_overlay_release_old_vid(overlay);
802 if (ret != 0)
803 return ret;
804
805 atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
806
807 vma = intel_overlay_pin_fb(new_bo);
808 if (IS_ERR(vma)) {
809 ret = PTR_ERR(vma);
810 goto out_pin_section;
811 }
812
813 i915_gem_object_flush_frontbuffer(new_bo, ORIGIN_DIRTYFB);
814
815 if (!overlay->active) {
816 const struct intel_crtc_state *crtc_state =
817 overlay->crtc->config;
818 u32 oconfig = 0;
819
820 if (crtc_state->gamma_enable &&
821 crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT)
822 oconfig |= OCONF_CC_OUT_8BIT;
823 if (crtc_state->gamma_enable)
824 oconfig |= OCONF_GAMMA2_ENABLE;
825 if (DISPLAY_VER(dev_priv) == 4)
826 oconfig |= OCONF_CSC_MODE_BT709;
827 oconfig |= pipe == 0 ?
828 OCONF_PIPE_A : OCONF_PIPE_B;
829 iowrite32(oconfig, ®s->OCONFIG);
830
831 ret = intel_overlay_on(overlay);
832 if (ret != 0)
833 goto out_unpin;
834 }
835
836 iowrite32(params->dst_y << 16 | params->dst_x, ®s->DWINPOS);
837 iowrite32(params->dst_height << 16 | params->dst_width, ®s->DWINSZ);
838
839 if (params->flags & I915_OVERLAY_YUV_PACKED)
840 tmp_width = packed_width_bytes(params->flags,
841 params->src_width);
842 else
843 tmp_width = params->src_width;
844
845 swidth = params->src_width;
846 swidthsw = calc_swidthsw(dev_priv, params->offset_Y, tmp_width);
847 sheight = params->src_height;
848 iowrite32(i915_ggtt_offset(vma) + params->offset_Y, ®s->OBUF_0Y);
849 ostride = params->stride_Y;
850
851 if (params->flags & I915_OVERLAY_YUV_PLANAR) {
852 int uv_hscale = uv_hsubsampling(params->flags);
853 int uv_vscale = uv_vsubsampling(params->flags);
854 u32 tmp_U, tmp_V;
855
856 swidth |= (params->src_width / uv_hscale) << 16;
857 sheight |= (params->src_height / uv_vscale) << 16;
858
859 tmp_U = calc_swidthsw(dev_priv, params->offset_U,
860 params->src_width / uv_hscale);
861 tmp_V = calc_swidthsw(dev_priv, params->offset_V,
862 params->src_width / uv_hscale);
863 swidthsw |= max(tmp_U, tmp_V) << 16;
864
865 iowrite32(i915_ggtt_offset(vma) + params->offset_U,
866 ®s->OBUF_0U);
867 iowrite32(i915_ggtt_offset(vma) + params->offset_V,
868 ®s->OBUF_0V);
869
870 ostride |= params->stride_UV << 16;
871 }
872
873 iowrite32(swidth, ®s->SWIDTH);
874 iowrite32(swidthsw, ®s->SWIDTHSW);
875 iowrite32(sheight, ®s->SHEIGHT);
876 iowrite32(ostride, ®s->OSTRIDE);
877
878 scale_changed = update_scaling_factors(overlay, regs, params);
879
880 update_colorkey(overlay, regs);
881
882 iowrite32(overlay_cmd_reg(params), ®s->OCMD);
883
884 ret = intel_overlay_continue(overlay, vma, scale_changed);
885 if (ret)
886 goto out_unpin;
887
888 return 0;
889
890 out_unpin:
891 i915_vma_unpin(vma);
892 out_pin_section:
893 atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
894
895 return ret;
896 }
897
intel_overlay_switch_off(struct intel_overlay * overlay)898 int intel_overlay_switch_off(struct intel_overlay *overlay)
899 {
900 struct drm_i915_private *dev_priv = overlay->i915;
901 int ret;
902
903 drm_WARN_ON(&dev_priv->drm,
904 !drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
905
906 ret = intel_overlay_recover_from_interrupt(overlay);
907 if (ret != 0)
908 return ret;
909
910 if (!overlay->active)
911 return 0;
912
913 ret = intel_overlay_release_old_vid(overlay);
914 if (ret != 0)
915 return ret;
916
917 iowrite32(0, &overlay->regs->OCMD);
918
919 return intel_overlay_off(overlay);
920 }
921
check_overlay_possible_on_crtc(struct intel_overlay * overlay,struct intel_crtc * crtc)922 static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
923 struct intel_crtc *crtc)
924 {
925 if (!crtc->active)
926 return -EINVAL;
927
928 /* can't use the overlay with double wide pipe */
929 if (crtc->config->double_wide)
930 return -EINVAL;
931
932 return 0;
933 }
934
update_pfit_vscale_ratio(struct intel_overlay * overlay)935 static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
936 {
937 struct drm_i915_private *dev_priv = overlay->i915;
938 u32 pfit_control = intel_de_read(dev_priv, PFIT_CONTROL);
939 u32 ratio;
940
941 /* XXX: This is not the same logic as in the xorg driver, but more in
942 * line with the intel documentation for the i965
943 */
944 if (DISPLAY_VER(dev_priv) >= 4) {
945 /* on i965 use the PGM reg to read out the autoscaler values */
946 ratio = intel_de_read(dev_priv, PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
947 } else {
948 if (pfit_control & VERT_AUTO_SCALE)
949 ratio = intel_de_read(dev_priv, PFIT_AUTO_RATIOS);
950 else
951 ratio = intel_de_read(dev_priv, PFIT_PGM_RATIOS);
952 ratio >>= PFIT_VERT_SCALE_SHIFT;
953 }
954
955 overlay->pfit_vscale_ratio = ratio;
956 }
957
check_overlay_dst(struct intel_overlay * overlay,struct drm_intel_overlay_put_image * rec)958 static int check_overlay_dst(struct intel_overlay *overlay,
959 struct drm_intel_overlay_put_image *rec)
960 {
961 const struct intel_crtc_state *crtc_state =
962 overlay->crtc->config;
963 struct drm_rect req, clipped;
964
965 drm_rect_init(&req, rec->dst_x, rec->dst_y,
966 rec->dst_width, rec->dst_height);
967
968 clipped = req;
969 drm_rect_intersect(&clipped, &crtc_state->pipe_src);
970
971 if (!drm_rect_visible(&clipped) ||
972 !drm_rect_equals(&clipped, &req))
973 return -EINVAL;
974
975 return 0;
976 }
977
check_overlay_scaling(struct drm_intel_overlay_put_image * rec)978 static int check_overlay_scaling(struct drm_intel_overlay_put_image *rec)
979 {
980 u32 tmp;
981
982 /* downscaling limit is 8.0 */
983 tmp = ((rec->src_scan_height << 16) / rec->dst_height) >> 16;
984 if (tmp > 7)
985 return -EINVAL;
986
987 tmp = ((rec->src_scan_width << 16) / rec->dst_width) >> 16;
988 if (tmp > 7)
989 return -EINVAL;
990
991 return 0;
992 }
993
check_overlay_src(struct drm_i915_private * dev_priv,struct drm_intel_overlay_put_image * rec,struct drm_i915_gem_object * new_bo)994 static int check_overlay_src(struct drm_i915_private *dev_priv,
995 struct drm_intel_overlay_put_image *rec,
996 struct drm_i915_gem_object *new_bo)
997 {
998 int uv_hscale = uv_hsubsampling(rec->flags);
999 int uv_vscale = uv_vsubsampling(rec->flags);
1000 u32 stride_mask;
1001 int depth;
1002 u32 tmp;
1003
1004 /* check src dimensions */
1005 if (IS_I845G(dev_priv) || IS_I830(dev_priv)) {
1006 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
1007 rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
1008 return -EINVAL;
1009 } else {
1010 if (rec->src_height > IMAGE_MAX_HEIGHT ||
1011 rec->src_width > IMAGE_MAX_WIDTH)
1012 return -EINVAL;
1013 }
1014
1015 /* better safe than sorry, use 4 as the maximal subsampling ratio */
1016 if (rec->src_height < N_VERT_Y_TAPS*4 ||
1017 rec->src_width < N_HORIZ_Y_TAPS*4)
1018 return -EINVAL;
1019
1020 /* check alignment constraints */
1021 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
1022 case I915_OVERLAY_RGB:
1023 /* not implemented */
1024 return -EINVAL;
1025
1026 case I915_OVERLAY_YUV_PACKED:
1027 if (uv_vscale != 1)
1028 return -EINVAL;
1029
1030 depth = packed_depth_bytes(rec->flags);
1031 if (depth < 0)
1032 return depth;
1033
1034 /* ignore UV planes */
1035 rec->stride_UV = 0;
1036 rec->offset_U = 0;
1037 rec->offset_V = 0;
1038 /* check pixel alignment */
1039 if (rec->offset_Y % depth)
1040 return -EINVAL;
1041 break;
1042
1043 case I915_OVERLAY_YUV_PLANAR:
1044 if (uv_vscale < 0 || uv_hscale < 0)
1045 return -EINVAL;
1046 /* no offset restrictions for planar formats */
1047 break;
1048
1049 default:
1050 return -EINVAL;
1051 }
1052
1053 if (rec->src_width % uv_hscale)
1054 return -EINVAL;
1055
1056 /* stride checking */
1057 if (IS_I830(dev_priv) || IS_I845G(dev_priv))
1058 stride_mask = 255;
1059 else
1060 stride_mask = 63;
1061
1062 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
1063 return -EINVAL;
1064 if (DISPLAY_VER(dev_priv) == 4 && rec->stride_Y < 512)
1065 return -EINVAL;
1066
1067 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
1068 4096 : 8192;
1069 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
1070 return -EINVAL;
1071
1072 /* check buffer dimensions */
1073 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
1074 case I915_OVERLAY_RGB:
1075 case I915_OVERLAY_YUV_PACKED:
1076 /* always 4 Y values per depth pixels */
1077 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
1078 return -EINVAL;
1079
1080 tmp = rec->stride_Y*rec->src_height;
1081 if (rec->offset_Y + tmp > new_bo->base.size)
1082 return -EINVAL;
1083 break;
1084
1085 case I915_OVERLAY_YUV_PLANAR:
1086 if (rec->src_width > rec->stride_Y)
1087 return -EINVAL;
1088 if (rec->src_width/uv_hscale > rec->stride_UV)
1089 return -EINVAL;
1090
1091 tmp = rec->stride_Y * rec->src_height;
1092 if (rec->offset_Y + tmp > new_bo->base.size)
1093 return -EINVAL;
1094
1095 tmp = rec->stride_UV * (rec->src_height / uv_vscale);
1096 if (rec->offset_U + tmp > new_bo->base.size ||
1097 rec->offset_V + tmp > new_bo->base.size)
1098 return -EINVAL;
1099 break;
1100 }
1101
1102 return 0;
1103 }
1104
intel_overlay_put_image_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)1105 int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
1106 struct drm_file *file_priv)
1107 {
1108 struct drm_intel_overlay_put_image *params = data;
1109 struct drm_i915_private *dev_priv = to_i915(dev);
1110 struct intel_overlay *overlay;
1111 struct drm_crtc *drmmode_crtc;
1112 struct intel_crtc *crtc;
1113 struct drm_i915_gem_object *new_bo;
1114 int ret;
1115
1116 overlay = dev_priv->overlay;
1117 if (!overlay) {
1118 drm_dbg(&dev_priv->drm, "userspace bug: no overlay\n");
1119 return -ENODEV;
1120 }
1121
1122 if (!(params->flags & I915_OVERLAY_ENABLE)) {
1123 drm_modeset_lock_all(dev);
1124 ret = intel_overlay_switch_off(overlay);
1125 drm_modeset_unlock_all(dev);
1126
1127 return ret;
1128 }
1129
1130 drmmode_crtc = drm_crtc_find(dev, file_priv, params->crtc_id);
1131 if (!drmmode_crtc)
1132 return -ENOENT;
1133 crtc = to_intel_crtc(drmmode_crtc);
1134
1135 new_bo = i915_gem_object_lookup(file_priv, params->bo_handle);
1136 if (!new_bo)
1137 return -ENOENT;
1138
1139 drm_modeset_lock_all(dev);
1140
1141 if (i915_gem_object_is_tiled(new_bo)) {
1142 drm_dbg_kms(&dev_priv->drm,
1143 "buffer used for overlay image can not be tiled\n");
1144 ret = -EINVAL;
1145 goto out_unlock;
1146 }
1147
1148 ret = intel_overlay_recover_from_interrupt(overlay);
1149 if (ret != 0)
1150 goto out_unlock;
1151
1152 if (overlay->crtc != crtc) {
1153 ret = intel_overlay_switch_off(overlay);
1154 if (ret != 0)
1155 goto out_unlock;
1156
1157 ret = check_overlay_possible_on_crtc(overlay, crtc);
1158 if (ret != 0)
1159 goto out_unlock;
1160
1161 overlay->crtc = crtc;
1162 crtc->overlay = overlay;
1163
1164 /* line too wide, i.e. one-line-mode */
1165 if (drm_rect_width(&crtc->config->pipe_src) > 1024 &&
1166 crtc->config->gmch_pfit.control & PFIT_ENABLE) {
1167 overlay->pfit_active = true;
1168 update_pfit_vscale_ratio(overlay);
1169 } else
1170 overlay->pfit_active = false;
1171 }
1172
1173 ret = check_overlay_dst(overlay, params);
1174 if (ret != 0)
1175 goto out_unlock;
1176
1177 if (overlay->pfit_active) {
1178 params->dst_y = (((u32)params->dst_y << 12) /
1179 overlay->pfit_vscale_ratio);
1180 /* shifting right rounds downwards, so add 1 */
1181 params->dst_height = (((u32)params->dst_height << 12) /
1182 overlay->pfit_vscale_ratio) + 1;
1183 }
1184
1185 if (params->src_scan_height > params->src_height ||
1186 params->src_scan_width > params->src_width) {
1187 ret = -EINVAL;
1188 goto out_unlock;
1189 }
1190
1191 ret = check_overlay_src(dev_priv, params, new_bo);
1192 if (ret != 0)
1193 goto out_unlock;
1194
1195 /* Check scaling after src size to prevent a divide-by-zero. */
1196 ret = check_overlay_scaling(params);
1197 if (ret != 0)
1198 goto out_unlock;
1199
1200 ret = intel_overlay_do_put_image(overlay, new_bo, params);
1201 if (ret != 0)
1202 goto out_unlock;
1203
1204 drm_modeset_unlock_all(dev);
1205 i915_gem_object_put(new_bo);
1206
1207 return 0;
1208
1209 out_unlock:
1210 drm_modeset_unlock_all(dev);
1211 i915_gem_object_put(new_bo);
1212
1213 return ret;
1214 }
1215
update_reg_attrs(struct intel_overlay * overlay,struct overlay_registers __iomem * regs)1216 static void update_reg_attrs(struct intel_overlay *overlay,
1217 struct overlay_registers __iomem *regs)
1218 {
1219 iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff),
1220 ®s->OCLRC0);
1221 iowrite32(overlay->saturation, ®s->OCLRC1);
1222 }
1223
check_gamma_bounds(u32 gamma1,u32 gamma2)1224 static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
1225 {
1226 int i;
1227
1228 if (gamma1 & 0xff000000 || gamma2 & 0xff000000)
1229 return false;
1230
1231 for (i = 0; i < 3; i++) {
1232 if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
1233 return false;
1234 }
1235
1236 return true;
1237 }
1238
check_gamma5_errata(u32 gamma5)1239 static bool check_gamma5_errata(u32 gamma5)
1240 {
1241 int i;
1242
1243 for (i = 0; i < 3; i++) {
1244 if (((gamma5 >> i*8) & 0xff) == 0x80)
1245 return false;
1246 }
1247
1248 return true;
1249 }
1250
check_gamma(struct drm_intel_overlay_attrs * attrs)1251 static int check_gamma(struct drm_intel_overlay_attrs *attrs)
1252 {
1253 if (!check_gamma_bounds(0, attrs->gamma0) ||
1254 !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
1255 !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
1256 !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
1257 !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
1258 !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
1259 !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
1260 return -EINVAL;
1261
1262 if (!check_gamma5_errata(attrs->gamma5))
1263 return -EINVAL;
1264
1265 return 0;
1266 }
1267
intel_overlay_attrs_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)1268 int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
1269 struct drm_file *file_priv)
1270 {
1271 struct drm_intel_overlay_attrs *attrs = data;
1272 struct drm_i915_private *dev_priv = to_i915(dev);
1273 struct intel_overlay *overlay;
1274 int ret;
1275
1276 overlay = dev_priv->overlay;
1277 if (!overlay) {
1278 drm_dbg(&dev_priv->drm, "userspace bug: no overlay\n");
1279 return -ENODEV;
1280 }
1281
1282 drm_modeset_lock_all(dev);
1283
1284 ret = -EINVAL;
1285 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1286 attrs->color_key = overlay->color_key;
1287 attrs->brightness = overlay->brightness;
1288 attrs->contrast = overlay->contrast;
1289 attrs->saturation = overlay->saturation;
1290
1291 if (DISPLAY_VER(dev_priv) != 2) {
1292 attrs->gamma0 = intel_de_read(dev_priv, OGAMC0);
1293 attrs->gamma1 = intel_de_read(dev_priv, OGAMC1);
1294 attrs->gamma2 = intel_de_read(dev_priv, OGAMC2);
1295 attrs->gamma3 = intel_de_read(dev_priv, OGAMC3);
1296 attrs->gamma4 = intel_de_read(dev_priv, OGAMC4);
1297 attrs->gamma5 = intel_de_read(dev_priv, OGAMC5);
1298 }
1299 } else {
1300 if (attrs->brightness < -128 || attrs->brightness > 127)
1301 goto out_unlock;
1302 if (attrs->contrast > 255)
1303 goto out_unlock;
1304 if (attrs->saturation > 1023)
1305 goto out_unlock;
1306
1307 overlay->color_key = attrs->color_key;
1308 overlay->brightness = attrs->brightness;
1309 overlay->contrast = attrs->contrast;
1310 overlay->saturation = attrs->saturation;
1311
1312 update_reg_attrs(overlay, overlay->regs);
1313
1314 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1315 if (DISPLAY_VER(dev_priv) == 2)
1316 goto out_unlock;
1317
1318 if (overlay->active) {
1319 ret = -EBUSY;
1320 goto out_unlock;
1321 }
1322
1323 ret = check_gamma(attrs);
1324 if (ret)
1325 goto out_unlock;
1326
1327 intel_de_write(dev_priv, OGAMC0, attrs->gamma0);
1328 intel_de_write(dev_priv, OGAMC1, attrs->gamma1);
1329 intel_de_write(dev_priv, OGAMC2, attrs->gamma2);
1330 intel_de_write(dev_priv, OGAMC3, attrs->gamma3);
1331 intel_de_write(dev_priv, OGAMC4, attrs->gamma4);
1332 intel_de_write(dev_priv, OGAMC5, attrs->gamma5);
1333 }
1334 }
1335 overlay->color_key_enabled = (attrs->flags & I915_OVERLAY_DISABLE_DEST_COLORKEY) == 0;
1336
1337 ret = 0;
1338 out_unlock:
1339 drm_modeset_unlock_all(dev);
1340
1341 return ret;
1342 }
1343
get_registers(struct intel_overlay * overlay,bool use_phys)1344 static int get_registers(struct intel_overlay *overlay, bool use_phys)
1345 {
1346 struct drm_i915_private *i915 = overlay->i915;
1347 struct drm_i915_gem_object *obj;
1348 struct i915_vma *vma;
1349 int err;
1350
1351 obj = i915_gem_object_create_stolen(i915, PAGE_SIZE);
1352 if (IS_ERR(obj))
1353 obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
1354 if (IS_ERR(obj))
1355 return PTR_ERR(obj);
1356
1357 vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE);
1358 if (IS_ERR(vma)) {
1359 err = PTR_ERR(vma);
1360 goto err_put_bo;
1361 }
1362
1363 if (use_phys)
1364 overlay->flip_addr = sg_dma_address(obj->mm.pages->sgl);
1365 else
1366 overlay->flip_addr = i915_ggtt_offset(vma);
1367 overlay->regs = i915_vma_pin_iomap(vma);
1368 i915_vma_unpin(vma);
1369
1370 if (IS_ERR(overlay->regs)) {
1371 err = PTR_ERR(overlay->regs);
1372 goto err_put_bo;
1373 }
1374
1375 overlay->reg_bo = obj;
1376 return 0;
1377
1378 err_put_bo:
1379 i915_gem_object_put(obj);
1380 return err;
1381 }
1382
intel_overlay_setup(struct drm_i915_private * dev_priv)1383 void intel_overlay_setup(struct drm_i915_private *dev_priv)
1384 {
1385 struct intel_overlay *overlay;
1386 struct intel_engine_cs *engine;
1387 int ret;
1388
1389 if (!HAS_OVERLAY(dev_priv))
1390 return;
1391
1392 engine = to_gt(dev_priv)->engine[RCS0];
1393 if (!engine || !engine->kernel_context)
1394 return;
1395
1396 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
1397 if (!overlay)
1398 return;
1399
1400 overlay->i915 = dev_priv;
1401 overlay->context = engine->kernel_context;
1402 GEM_BUG_ON(!overlay->context);
1403
1404 overlay->color_key = 0x0101fe;
1405 overlay->color_key_enabled = true;
1406 overlay->brightness = -19;
1407 overlay->contrast = 75;
1408 overlay->saturation = 146;
1409
1410 i915_active_init(&overlay->last_flip,
1411 NULL, intel_overlay_last_flip_retire, 0);
1412
1413 ret = get_registers(overlay, OVERLAY_NEEDS_PHYSICAL(dev_priv));
1414 if (ret)
1415 goto out_free;
1416
1417 memset_io(overlay->regs, 0, sizeof(struct overlay_registers));
1418 update_polyphase_filter(overlay->regs);
1419 update_reg_attrs(overlay, overlay->regs);
1420
1421 dev_priv->overlay = overlay;
1422 drm_info(&dev_priv->drm, "Initialized overlay support.\n");
1423 return;
1424
1425 out_free:
1426 kfree(overlay);
1427 }
1428
intel_overlay_cleanup(struct drm_i915_private * dev_priv)1429 void intel_overlay_cleanup(struct drm_i915_private *dev_priv)
1430 {
1431 struct intel_overlay *overlay;
1432
1433 overlay = fetch_and_zero(&dev_priv->overlay);
1434 if (!overlay)
1435 return;
1436
1437 /*
1438 * The bo's should be free'd by the generic code already.
1439 * Furthermore modesetting teardown happens beforehand so the
1440 * hardware should be off already.
1441 */
1442 drm_WARN_ON(&dev_priv->drm, overlay->active);
1443
1444 i915_gem_object_put(overlay->reg_bo);
1445 i915_active_fini(&overlay->last_flip);
1446
1447 kfree(overlay);
1448 }
1449
1450 #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
1451
1452 struct intel_overlay_error_state {
1453 struct overlay_registers regs;
1454 unsigned long base;
1455 u32 dovsta;
1456 u32 isr;
1457 };
1458
1459 struct intel_overlay_error_state *
intel_overlay_capture_error_state(struct drm_i915_private * dev_priv)1460 intel_overlay_capture_error_state(struct drm_i915_private *dev_priv)
1461 {
1462 struct intel_overlay *overlay = dev_priv->overlay;
1463 struct intel_overlay_error_state *error;
1464
1465 if (!overlay || !overlay->active)
1466 return NULL;
1467
1468 error = kmalloc(sizeof(*error), GFP_ATOMIC);
1469 if (error == NULL)
1470 return NULL;
1471
1472 error->dovsta = intel_de_read(dev_priv, DOVSTA);
1473 error->isr = intel_de_read(dev_priv, GEN2_ISR);
1474 error->base = overlay->flip_addr;
1475
1476 memcpy_fromio(&error->regs, overlay->regs, sizeof(error->regs));
1477
1478 return error;
1479 }
1480
1481 void
intel_overlay_print_error_state(struct drm_i915_error_state_buf * m,struct intel_overlay_error_state * error)1482 intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
1483 struct intel_overlay_error_state *error)
1484 {
1485 i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
1486 error->dovsta, error->isr);
1487 i915_error_printf(m, " Register file at 0x%08lx:\n",
1488 error->base);
1489
1490 #define P(x) i915_error_printf(m, " " #x ": 0x%08x\n", error->regs.x)
1491 P(OBUF_0Y);
1492 P(OBUF_1Y);
1493 P(OBUF_0U);
1494 P(OBUF_0V);
1495 P(OBUF_1U);
1496 P(OBUF_1V);
1497 P(OSTRIDE);
1498 P(YRGB_VPH);
1499 P(UV_VPH);
1500 P(HORZ_PH);
1501 P(INIT_PHS);
1502 P(DWINPOS);
1503 P(DWINSZ);
1504 P(SWIDTH);
1505 P(SWIDTHSW);
1506 P(SHEIGHT);
1507 P(YRGBSCALE);
1508 P(UVSCALE);
1509 P(OCLRC0);
1510 P(OCLRC1);
1511 P(DCLRKV);
1512 P(DCLRKM);
1513 P(SCLRKVH);
1514 P(SCLRKVL);
1515 P(SCLRKEN);
1516 P(OCONFIG);
1517 P(OCMD);
1518 P(OSTART_0Y);
1519 P(OSTART_1Y);
1520 P(OSTART_0U);
1521 P(OSTART_0V);
1522 P(OSTART_1U);
1523 P(OSTART_1V);
1524 P(OTILEOFF_0Y);
1525 P(OTILEOFF_1Y);
1526 P(OTILEOFF_0U);
1527 P(OTILEOFF_0V);
1528 P(OTILEOFF_1U);
1529 P(OTILEOFF_1V);
1530 P(FASTHSCALE);
1531 P(UVSCALEV);
1532 #undef P
1533 }
1534
1535 #endif
1536