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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#include <drm/i915_drm.h>
31
32#include "gem/i915_gem_pm.h"
33
34#include "i915_drv.h"
35#include "i915_reg.h"
36#include "intel_display_types.h"
37#include "intel_frontbuffer.h"
38#include "intel_overlay.h"
39
40/* Limits for overlay size. According to intel doc, the real limits are:
41 * Y width: 4095, UV width (planar): 2047, Y height: 2047,
42 * UV width (planar): * 1023. But the xorg thinks 2048 for height and width. Use
43 * the mininum of both. */
44#define IMAGE_MAX_WIDTH 2048
45#define IMAGE_MAX_HEIGHT 2046 /* 2 * 1023 */
46/* on 830 and 845 these large limits result in the card hanging */
47#define IMAGE_MAX_WIDTH_LEGACY 1024
48#define IMAGE_MAX_HEIGHT_LEGACY 1088
49
50/* overlay register definitions */
51/* OCMD register */
52#define OCMD_TILED_SURFACE (0x1<<19)
53#define OCMD_MIRROR_MASK (0x3<<17)
54#define OCMD_MIRROR_MODE (0x3<<17)
55#define OCMD_MIRROR_HORIZONTAL (0x1<<17)
56#define OCMD_MIRROR_VERTICAL (0x2<<17)
57#define OCMD_MIRROR_BOTH (0x3<<17)
58#define OCMD_BYTEORDER_MASK (0x3<<14) /* zero for YUYV or FOURCC YUY2 */
59#define OCMD_UV_SWAP (0x1<<14) /* YVYU */
60#define OCMD_Y_SWAP (0x2<<14) /* UYVY or FOURCC UYVY */
61#define OCMD_Y_AND_UV_SWAP (0x3<<14) /* VYUY */
62#define OCMD_SOURCE_FORMAT_MASK (0xf<<10)
63#define OCMD_RGB_888 (0x1<<10) /* not in i965 Intel docs */
64#define OCMD_RGB_555 (0x2<<10) /* not in i965 Intel docs */
65#define OCMD_RGB_565 (0x3<<10) /* not in i965 Intel docs */
66#define OCMD_YUV_422_PACKED (0x8<<10)
67#define OCMD_YUV_411_PACKED (0x9<<10) /* not in i965 Intel docs */
68#define OCMD_YUV_420_PLANAR (0xc<<10)
69#define OCMD_YUV_422_PLANAR (0xd<<10)
70#define OCMD_YUV_410_PLANAR (0xe<<10) /* also 411 */
71#define OCMD_TVSYNCFLIP_PARITY (0x1<<9)
72#define OCMD_TVSYNCFLIP_ENABLE (0x1<<7)
73#define OCMD_BUF_TYPE_MASK (0x1<<5)
74#define OCMD_BUF_TYPE_FRAME (0x0<<5)
75#define OCMD_BUF_TYPE_FIELD (0x1<<5)
76#define OCMD_TEST_MODE (0x1<<4)
77#define OCMD_BUFFER_SELECT (0x3<<2)
78#define OCMD_BUFFER0 (0x0<<2)
79#define OCMD_BUFFER1 (0x1<<2)
80#define OCMD_FIELD_SELECT (0x1<<2)
81#define OCMD_FIELD0 (0x0<<1)
82#define OCMD_FIELD1 (0x1<<1)
83#define OCMD_ENABLE (0x1<<0)
84
85/* OCONFIG register */
86#define OCONF_PIPE_MASK (0x1<<18)
87#define OCONF_PIPE_A (0x0<<18)
88#define OCONF_PIPE_B (0x1<<18)
89#define OCONF_GAMMA2_ENABLE (0x1<<16)
90#define OCONF_CSC_MODE_BT601 (0x0<<5)
91#define OCONF_CSC_MODE_BT709 (0x1<<5)
92#define OCONF_CSC_BYPASS (0x1<<4)
93#define OCONF_CC_OUT_8BIT (0x1<<3)
94#define OCONF_TEST_MODE (0x1<<2)
95#define OCONF_THREE_LINE_BUFFER (0x1<<0)
96#define OCONF_TWO_LINE_BUFFER (0x0<<0)
97
98/* DCLRKM (dst-key) register */
99#define DST_KEY_ENABLE (0x1<<31)
100#define CLK_RGB24_MASK 0x0
101#define CLK_RGB16_MASK 0x070307
102#define CLK_RGB15_MASK 0x070707
103#define CLK_RGB8I_MASK 0xffffff
104
105#define RGB16_TO_COLORKEY(c) \
106 (((c & 0xF800) << 8) | ((c & 0x07E0) << 5) | ((c & 0x001F) << 3))
107#define RGB15_TO_COLORKEY(c) \
108 (((c & 0x7c00) << 9) | ((c & 0x03E0) << 6) | ((c & 0x001F) << 3))
109
110/* overlay flip addr flag */
111#define OFC_UPDATE 0x1
112
113/* polyphase filter coefficients */
114#define N_HORIZ_Y_TAPS 5
115#define N_VERT_Y_TAPS 3
116#define N_HORIZ_UV_TAPS 3
117#define N_VERT_UV_TAPS 3
118#define N_PHASES 17
119#define MAX_TAPS 5
120
121/* memory bufferd overlay registers */
122struct overlay_registers {
123 u32 OBUF_0Y;
124 u32 OBUF_1Y;
125 u32 OBUF_0U;
126 u32 OBUF_0V;
127 u32 OBUF_1U;
128 u32 OBUF_1V;
129 u32 OSTRIDE;
130 u32 YRGB_VPH;
131 u32 UV_VPH;
132 u32 HORZ_PH;
133 u32 INIT_PHS;
134 u32 DWINPOS;
135 u32 DWINSZ;
136 u32 SWIDTH;
137 u32 SWIDTHSW;
138 u32 SHEIGHT;
139 u32 YRGBSCALE;
140 u32 UVSCALE;
141 u32 OCLRC0;
142 u32 OCLRC1;
143 u32 DCLRKV;
144 u32 DCLRKM;
145 u32 SCLRKVH;
146 u32 SCLRKVL;
147 u32 SCLRKEN;
148 u32 OCONFIG;
149 u32 OCMD;
150 u32 RESERVED1; /* 0x6C */
151 u32 OSTART_0Y;
152 u32 OSTART_1Y;
153 u32 OSTART_0U;
154 u32 OSTART_0V;
155 u32 OSTART_1U;
156 u32 OSTART_1V;
157 u32 OTILEOFF_0Y;
158 u32 OTILEOFF_1Y;
159 u32 OTILEOFF_0U;
160 u32 OTILEOFF_0V;
161 u32 OTILEOFF_1U;
162 u32 OTILEOFF_1V;
163 u32 FASTHSCALE; /* 0xA0 */
164 u32 UVSCALEV; /* 0xA4 */
165 u32 RESERVEDC[(0x200 - 0xA8) / 4]; /* 0xA8 - 0x1FC */
166 u16 Y_VCOEFS[N_VERT_Y_TAPS * N_PHASES]; /* 0x200 */
167 u16 RESERVEDD[0x100 / 2 - N_VERT_Y_TAPS * N_PHASES];
168 u16 Y_HCOEFS[N_HORIZ_Y_TAPS * N_PHASES]; /* 0x300 */
169 u16 RESERVEDE[0x200 / 2 - N_HORIZ_Y_TAPS * N_PHASES];
170 u16 UV_VCOEFS[N_VERT_UV_TAPS * N_PHASES]; /* 0x500 */
171 u16 RESERVEDF[0x100 / 2 - N_VERT_UV_TAPS * N_PHASES];
172 u16 UV_HCOEFS[N_HORIZ_UV_TAPS * N_PHASES]; /* 0x600 */
173 u16 RESERVEDG[0x100 / 2 - N_HORIZ_UV_TAPS * N_PHASES];
174};
175
176struct intel_overlay {
177 struct drm_i915_private *i915;
178 struct intel_context *context;
179 struct intel_crtc *crtc;
180 struct i915_vma *vma;
181 struct i915_vma *old_vma;
182 bool active;
183 bool pfit_active;
184 u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
185 u32 color_key:24;
186 u32 color_key_enabled:1;
187 u32 brightness, contrast, saturation;
188 u32 old_xscale, old_yscale;
189 /* register access */
190 struct drm_i915_gem_object *reg_bo;
191 struct overlay_registers __iomem *regs;
192 u32 flip_addr;
193 /* flip handling */
194 struct i915_active last_flip;
195 void (*flip_complete)(struct intel_overlay *ovl);
196};
197
198static void i830_overlay_clock_gating(struct drm_i915_private *dev_priv,
199 bool enable)
200{
201 struct pci_dev *pdev = dev_priv->drm.pdev;
202 u8 val;
203
204 /* WA_OVERLAY_CLKGATE:alm */
205 if (enable)
206 I915_WRITE(DSPCLK_GATE_D, 0);
207 else
208 I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
209
210 /* WA_DISABLE_L2CACHE_CLOCK_GATING:alm */
211 pci_bus_read_config_byte(pdev->bus,
212 PCI_DEVFN(0, 0), I830_CLOCK_GATE, &val);
213 if (enable)
214 val &= ~I830_L2_CACHE_CLOCK_GATE_DISABLE;
215 else
216 val |= I830_L2_CACHE_CLOCK_GATE_DISABLE;
217 pci_bus_write_config_byte(pdev->bus,
218 PCI_DEVFN(0, 0), I830_CLOCK_GATE, val);
219}
220
221static struct i915_request *
222alloc_request(struct intel_overlay *overlay, void (*fn)(struct intel_overlay *))
223{
224 struct i915_request *rq;
225 int err;
226
227 overlay->flip_complete = fn;
228
229 rq = i915_request_create(overlay->context);
230 if (IS_ERR(rq))
231 return rq;
232
233 err = i915_active_ref(&overlay->last_flip, rq->timeline, rq);
234 if (err) {
235 i915_request_add(rq);
236 return ERR_PTR(err);
237 }
238
239 return rq;
240}
241
242/* overlay needs to be disable in OCMD reg */
243static int intel_overlay_on(struct intel_overlay *overlay)
244{
245 struct drm_i915_private *dev_priv = overlay->i915;
246 struct i915_request *rq;
247 u32 *cs;
248
249 WARN_ON(overlay->active);
250
251 rq = alloc_request(overlay, NULL);
252 if (IS_ERR(rq))
253 return PTR_ERR(rq);
254
255 cs = intel_ring_begin(rq, 4);
256 if (IS_ERR(cs)) {
257 i915_request_add(rq);
258 return PTR_ERR(cs);
259 }
260
261 overlay->active = true;
262
263 if (IS_I830(dev_priv))
264 i830_overlay_clock_gating(dev_priv, false);
265
266 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_ON;
267 *cs++ = overlay->flip_addr | OFC_UPDATE;
268 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
269 *cs++ = MI_NOOP;
270 intel_ring_advance(rq, cs);
271
272 i915_request_add(rq);
273
274 return i915_active_wait(&overlay->last_flip);
275}
276
277static void intel_overlay_flip_prepare(struct intel_overlay *overlay,
278 struct i915_vma *vma)
279{
280 enum pipe pipe = overlay->crtc->pipe;
281
282 WARN_ON(overlay->old_vma);
283
284 intel_frontbuffer_track(overlay->vma ? overlay->vma->obj->frontbuffer : NULL,
285 vma ? vma->obj->frontbuffer : NULL,
286 INTEL_FRONTBUFFER_OVERLAY(pipe));
287
288 intel_frontbuffer_flip_prepare(overlay->i915,
289 INTEL_FRONTBUFFER_OVERLAY(pipe));
290
291 overlay->old_vma = overlay->vma;
292 if (vma)
293 overlay->vma = i915_vma_get(vma);
294 else
295 overlay->vma = NULL;
296}
297
298/* overlay needs to be enabled in OCMD reg */
299static int intel_overlay_continue(struct intel_overlay *overlay,
300 struct i915_vma *vma,
301 bool load_polyphase_filter)
302{
303 struct drm_i915_private *dev_priv = overlay->i915;
304 struct i915_request *rq;
305 u32 flip_addr = overlay->flip_addr;
306 u32 tmp, *cs;
307
308 WARN_ON(!overlay->active);
309
310 if (load_polyphase_filter)
311 flip_addr |= OFC_UPDATE;
312
313 /* check for underruns */
314 tmp = I915_READ(DOVSTA);
315 if (tmp & (1 << 17))
316 DRM_DEBUG("overlay underrun, DOVSTA: %x\n", tmp);
317
318 rq = alloc_request(overlay, NULL);
319 if (IS_ERR(rq))
320 return PTR_ERR(rq);
321
322 cs = intel_ring_begin(rq, 2);
323 if (IS_ERR(cs)) {
324 i915_request_add(rq);
325 return PTR_ERR(cs);
326 }
327
328 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE;
329 *cs++ = flip_addr;
330 intel_ring_advance(rq, cs);
331
332 intel_overlay_flip_prepare(overlay, vma);
333 i915_request_add(rq);
334
335 return 0;
336}
337
338static void intel_overlay_release_old_vma(struct intel_overlay *overlay)
339{
340 struct i915_vma *vma;
341
342 vma = fetch_and_zero(&overlay->old_vma);
343 if (WARN_ON(!vma))
344 return;
345
346 intel_frontbuffer_flip_complete(overlay->i915,
347 INTEL_FRONTBUFFER_OVERLAY(overlay->crtc->pipe));
348
349 i915_gem_object_unpin_from_display_plane(vma);
350 i915_vma_put(vma);
351}
352
353static void
354intel_overlay_release_old_vid_tail(struct intel_overlay *overlay)
355{
356 intel_overlay_release_old_vma(overlay);
357}
358
359static void intel_overlay_off_tail(struct intel_overlay *overlay)
360{
361 struct drm_i915_private *dev_priv = overlay->i915;
362
363 intel_overlay_release_old_vma(overlay);
364
365 overlay->crtc->overlay = NULL;
366 overlay->crtc = NULL;
367 overlay->active = false;
368
369 if (IS_I830(dev_priv))
370 i830_overlay_clock_gating(dev_priv, true);
371}
372
373static void
374intel_overlay_last_flip_retire(struct i915_active *active)
375{
376 struct intel_overlay *overlay =
377 container_of(active, typeof(*overlay), last_flip);
378
379 if (overlay->flip_complete)
380 overlay->flip_complete(overlay);
381}
382
383/* overlay needs to be disabled in OCMD reg */
384static int intel_overlay_off(struct intel_overlay *overlay)
385{
386 struct i915_request *rq;
387 u32 *cs, flip_addr = overlay->flip_addr;
388
389 WARN_ON(!overlay->active);
390
391 /* According to intel docs the overlay hw may hang (when switching
392 * off) without loading the filter coeffs. It is however unclear whether
393 * this applies to the disabling of the overlay or to the switching off
394 * of the hw. Do it in both cases */
395 flip_addr |= OFC_UPDATE;
396
397 rq = alloc_request(overlay, intel_overlay_off_tail);
398 if (IS_ERR(rq))
399 return PTR_ERR(rq);
400
401 cs = intel_ring_begin(rq, 6);
402 if (IS_ERR(cs)) {
403 i915_request_add(rq);
404 return PTR_ERR(cs);
405 }
406
407 /* wait for overlay to go idle */
408 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE;
409 *cs++ = flip_addr;
410 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
411
412 /* turn overlay off */
413 *cs++ = MI_OVERLAY_FLIP | MI_OVERLAY_OFF;
414 *cs++ = flip_addr;
415 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
416
417 intel_ring_advance(rq, cs);
418
419 intel_overlay_flip_prepare(overlay, NULL);
420 i915_request_add(rq);
421
422 return i915_active_wait(&overlay->last_flip);
423}
424
425/* recover from an interruption due to a signal
426 * We have to be careful not to repeat work forever an make forward progess. */
427static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay)
428{
429 return i915_active_wait(&overlay->last_flip);
430}
431
432/* Wait for pending overlay flip and release old frame.
433 * Needs to be called before the overlay register are changed
434 * via intel_overlay_(un)map_regs
435 */
436static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
437{
438 struct drm_i915_private *dev_priv = overlay->i915;
439 struct i915_request *rq;
440 u32 *cs;
441
442 lockdep_assert_held(&dev_priv->drm.struct_mutex);
443
444 /*
445 * Only wait if there is actually an old frame to release to
446 * guarantee forward progress.
447 */
448 if (!overlay->old_vma)
449 return 0;
450
451 if (!(I915_READ(GEN2_ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT)) {
452 intel_overlay_release_old_vid_tail(overlay);
453 return 0;
454 }
455
456 rq = alloc_request(overlay, intel_overlay_release_old_vid_tail);
457 if (IS_ERR(rq))
458 return PTR_ERR(rq);
459
460 cs = intel_ring_begin(rq, 2);
461 if (IS_ERR(cs)) {
462 i915_request_add(rq);
463 return PTR_ERR(cs);
464 }
465
466 *cs++ = MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP;
467 *cs++ = MI_NOOP;
468 intel_ring_advance(rq, cs);
469
470 i915_request_add(rq);
471
472 return i915_active_wait(&overlay->last_flip);
473}
474
475void intel_overlay_reset(struct drm_i915_private *dev_priv)
476{
477 struct intel_overlay *overlay = dev_priv->overlay;
478
479 if (!overlay)
480 return;
481
482 overlay->old_xscale = 0;
483 overlay->old_yscale = 0;
484 overlay->crtc = NULL;
485 overlay->active = false;
486}
487
488static int packed_depth_bytes(u32 format)
489{
490 switch (format & I915_OVERLAY_DEPTH_MASK) {
491 case I915_OVERLAY_YUV422:
492 return 4;
493 case I915_OVERLAY_YUV411:
494 /* return 6; not implemented */
495 default:
496 return -EINVAL;
497 }
498}
499
500static int packed_width_bytes(u32 format, short width)
501{
502 switch (format & I915_OVERLAY_DEPTH_MASK) {
503 case I915_OVERLAY_YUV422:
504 return width << 1;
505 default:
506 return -EINVAL;
507 }
508}
509
510static int uv_hsubsampling(u32 format)
511{
512 switch (format & I915_OVERLAY_DEPTH_MASK) {
513 case I915_OVERLAY_YUV422:
514 case I915_OVERLAY_YUV420:
515 return 2;
516 case I915_OVERLAY_YUV411:
517 case I915_OVERLAY_YUV410:
518 return 4;
519 default:
520 return -EINVAL;
521 }
522}
523
524static int uv_vsubsampling(u32 format)
525{
526 switch (format & I915_OVERLAY_DEPTH_MASK) {
527 case I915_OVERLAY_YUV420:
528 case I915_OVERLAY_YUV410:
529 return 2;
530 case I915_OVERLAY_YUV422:
531 case I915_OVERLAY_YUV411:
532 return 1;
533 default:
534 return -EINVAL;
535 }
536}
537
538static u32 calc_swidthsw(struct drm_i915_private *dev_priv, u32 offset, u32 width)
539{
540 u32 sw;
541
542 if (IS_GEN(dev_priv, 2))
543 sw = ALIGN((offset & 31) + width, 32);
544 else
545 sw = ALIGN((offset & 63) + width, 64);
546
547 if (sw == 0)
548 return 0;
549
550 return (sw - 32) >> 3;
551}
552
553static const u16 y_static_hcoeffs[N_PHASES][N_HORIZ_Y_TAPS] = {
554 [ 0] = { 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0, },
555 [ 1] = { 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440, },
556 [ 2] = { 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0, },
557 [ 3] = { 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380, },
558 [ 4] = { 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320, },
559 [ 5] = { 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0, },
560 [ 6] = { 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260, },
561 [ 7] = { 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200, },
562 [ 8] = { 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0, },
563 [ 9] = { 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160, },
564 [10] = { 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120, },
565 [11] = { 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0, },
566 [12] = { 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0, },
567 [13] = { 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060, },
568 [14] = { 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040, },
569 [15] = { 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020, },
570 [16] = { 0xb000, 0x3000, 0x0800, 0x3000, 0xb000, },
571};
572
573static const u16 uv_static_hcoeffs[N_PHASES][N_HORIZ_UV_TAPS] = {
574 [ 0] = { 0x3000, 0x1800, 0x1800, },
575 [ 1] = { 0xb000, 0x18d0, 0x2e60, },
576 [ 2] = { 0xb000, 0x1990, 0x2ce0, },
577 [ 3] = { 0xb020, 0x1a68, 0x2b40, },
578 [ 4] = { 0xb040, 0x1b20, 0x29e0, },
579 [ 5] = { 0xb060, 0x1bd8, 0x2880, },
580 [ 6] = { 0xb080, 0x1c88, 0x3e60, },
581 [ 7] = { 0xb0a0, 0x1d28, 0x3c00, },
582 [ 8] = { 0xb0c0, 0x1db8, 0x39e0, },
583 [ 9] = { 0xb0e0, 0x1e40, 0x37e0, },
584 [10] = { 0xb100, 0x1eb8, 0x3620, },
585 [11] = { 0xb100, 0x1f18, 0x34a0, },
586 [12] = { 0xb100, 0x1f68, 0x3360, },
587 [13] = { 0xb0e0, 0x1fa8, 0x3240, },
588 [14] = { 0xb0c0, 0x1fe0, 0x3140, },
589 [15] = { 0xb060, 0x1ff0, 0x30a0, },
590 [16] = { 0x3000, 0x0800, 0x3000, },
591};
592
593static void update_polyphase_filter(struct overlay_registers __iomem *regs)
594{
595 memcpy_toio(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs));
596 memcpy_toio(regs->UV_HCOEFS, uv_static_hcoeffs,
597 sizeof(uv_static_hcoeffs));
598}
599
600static bool update_scaling_factors(struct intel_overlay *overlay,
601 struct overlay_registers __iomem *regs,
602 struct drm_intel_overlay_put_image *params)
603{
604 /* fixed point with a 12 bit shift */
605 u32 xscale, yscale, xscale_UV, yscale_UV;
606#define FP_SHIFT 12
607#define FRACT_MASK 0xfff
608 bool scale_changed = false;
609 int uv_hscale = uv_hsubsampling(params->flags);
610 int uv_vscale = uv_vsubsampling(params->flags);
611
612 if (params->dst_width > 1)
613 xscale = ((params->src_scan_width - 1) << FP_SHIFT) /
614 params->dst_width;
615 else
616 xscale = 1 << FP_SHIFT;
617
618 if (params->dst_height > 1)
619 yscale = ((params->src_scan_height - 1) << FP_SHIFT) /
620 params->dst_height;
621 else
622 yscale = 1 << FP_SHIFT;
623
624 /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/
625 xscale_UV = xscale/uv_hscale;
626 yscale_UV = yscale/uv_vscale;
627 /* make the Y scale to UV scale ratio an exact multiply */
628 xscale = xscale_UV * uv_hscale;
629 yscale = yscale_UV * uv_vscale;
630 /*} else {
631 xscale_UV = 0;
632 yscale_UV = 0;
633 }*/
634
635 if (xscale != overlay->old_xscale || yscale != overlay->old_yscale)
636 scale_changed = true;
637 overlay->old_xscale = xscale;
638 overlay->old_yscale = yscale;
639
640 iowrite32(((yscale & FRACT_MASK) << 20) |
641 ((xscale >> FP_SHIFT) << 16) |
642 ((xscale & FRACT_MASK) << 3),
643 ®s->YRGBSCALE);
644
645 iowrite32(((yscale_UV & FRACT_MASK) << 20) |
646 ((xscale_UV >> FP_SHIFT) << 16) |
647 ((xscale_UV & FRACT_MASK) << 3),
648 ®s->UVSCALE);
649
650 iowrite32((((yscale >> FP_SHIFT) << 16) |
651 ((yscale_UV >> FP_SHIFT) << 0)),
652 ®s->UVSCALEV);
653
654 if (scale_changed)
655 update_polyphase_filter(regs);
656
657 return scale_changed;
658}
659
660static void update_colorkey(struct intel_overlay *overlay,
661 struct overlay_registers __iomem *regs)
662{
663 const struct intel_plane_state *state =
664 to_intel_plane_state(overlay->crtc->base.primary->state);
665 u32 key = overlay->color_key;
666 u32 format = 0;
667 u32 flags = 0;
668
669 if (overlay->color_key_enabled)
670 flags |= DST_KEY_ENABLE;
671
672 if (state->base.visible)
673 format = state->base.fb->format->format;
674
675 switch (format) {
676 case DRM_FORMAT_C8:
677 key = 0;
678 flags |= CLK_RGB8I_MASK;
679 break;
680 case DRM_FORMAT_XRGB1555:
681 key = RGB15_TO_COLORKEY(key);
682 flags |= CLK_RGB15_MASK;
683 break;
684 case DRM_FORMAT_RGB565:
685 key = RGB16_TO_COLORKEY(key);
686 flags |= CLK_RGB16_MASK;
687 break;
688 default:
689 flags |= CLK_RGB24_MASK;
690 break;
691 }
692
693 iowrite32(key, ®s->DCLRKV);
694 iowrite32(flags, ®s->DCLRKM);
695}
696
697static u32 overlay_cmd_reg(struct drm_intel_overlay_put_image *params)
698{
699 u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0;
700
701 if (params->flags & I915_OVERLAY_YUV_PLANAR) {
702 switch (params->flags & I915_OVERLAY_DEPTH_MASK) {
703 case I915_OVERLAY_YUV422:
704 cmd |= OCMD_YUV_422_PLANAR;
705 break;
706 case I915_OVERLAY_YUV420:
707 cmd |= OCMD_YUV_420_PLANAR;
708 break;
709 case I915_OVERLAY_YUV411:
710 case I915_OVERLAY_YUV410:
711 cmd |= OCMD_YUV_410_PLANAR;
712 break;
713 }
714 } else { /* YUV packed */
715 switch (params->flags & I915_OVERLAY_DEPTH_MASK) {
716 case I915_OVERLAY_YUV422:
717 cmd |= OCMD_YUV_422_PACKED;
718 break;
719 case I915_OVERLAY_YUV411:
720 cmd |= OCMD_YUV_411_PACKED;
721 break;
722 }
723
724 switch (params->flags & I915_OVERLAY_SWAP_MASK) {
725 case I915_OVERLAY_NO_SWAP:
726 break;
727 case I915_OVERLAY_UV_SWAP:
728 cmd |= OCMD_UV_SWAP;
729 break;
730 case I915_OVERLAY_Y_SWAP:
731 cmd |= OCMD_Y_SWAP;
732 break;
733 case I915_OVERLAY_Y_AND_UV_SWAP:
734 cmd |= OCMD_Y_AND_UV_SWAP;
735 break;
736 }
737 }
738
739 return cmd;
740}
741
742static int intel_overlay_do_put_image(struct intel_overlay *overlay,
743 struct drm_i915_gem_object *new_bo,
744 struct drm_intel_overlay_put_image *params)
745{
746 struct overlay_registers __iomem *regs = overlay->regs;
747 struct drm_i915_private *dev_priv = overlay->i915;
748 u32 swidth, swidthsw, sheight, ostride;
749 enum pipe pipe = overlay->crtc->pipe;
750 bool scale_changed = false;
751 struct i915_vma *vma;
752 int ret, tmp_width;
753
754 lockdep_assert_held(&dev_priv->drm.struct_mutex);
755 WARN_ON(!drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
756
757 ret = intel_overlay_release_old_vid(overlay);
758 if (ret != 0)
759 return ret;
760
761 atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
762
763 i915_gem_object_lock(new_bo);
764 vma = i915_gem_object_pin_to_display_plane(new_bo,
765 0, NULL, PIN_MAPPABLE);
766 i915_gem_object_unlock(new_bo);
767 if (IS_ERR(vma)) {
768 ret = PTR_ERR(vma);
769 goto out_pin_section;
770 }
771 intel_frontbuffer_flush(new_bo->frontbuffer, ORIGIN_DIRTYFB);
772
773 if (!overlay->active) {
774 u32 oconfig;
775
776 oconfig = OCONF_CC_OUT_8BIT;
777 if (IS_GEN(dev_priv, 4))
778 oconfig |= OCONF_CSC_MODE_BT709;
779 oconfig |= pipe == 0 ?
780 OCONF_PIPE_A : OCONF_PIPE_B;
781 iowrite32(oconfig, ®s->OCONFIG);
782
783 ret = intel_overlay_on(overlay);
784 if (ret != 0)
785 goto out_unpin;
786 }
787
788 iowrite32(params->dst_y << 16 | params->dst_x, ®s->DWINPOS);
789 iowrite32(params->dst_height << 16 | params->dst_width, ®s->DWINSZ);
790
791 if (params->flags & I915_OVERLAY_YUV_PACKED)
792 tmp_width = packed_width_bytes(params->flags,
793 params->src_width);
794 else
795 tmp_width = params->src_width;
796
797 swidth = params->src_width;
798 swidthsw = calc_swidthsw(dev_priv, params->offset_Y, tmp_width);
799 sheight = params->src_height;
800 iowrite32(i915_ggtt_offset(vma) + params->offset_Y, ®s->OBUF_0Y);
801 ostride = params->stride_Y;
802
803 if (params->flags & I915_OVERLAY_YUV_PLANAR) {
804 int uv_hscale = uv_hsubsampling(params->flags);
805 int uv_vscale = uv_vsubsampling(params->flags);
806 u32 tmp_U, tmp_V;
807
808 swidth |= (params->src_width / uv_hscale) << 16;
809 sheight |= (params->src_height / uv_vscale) << 16;
810
811 tmp_U = calc_swidthsw(dev_priv, params->offset_U,
812 params->src_width / uv_hscale);
813 tmp_V = calc_swidthsw(dev_priv, params->offset_V,
814 params->src_width / uv_hscale);
815 swidthsw |= max(tmp_U, tmp_V) << 16;
816
817 iowrite32(i915_ggtt_offset(vma) + params->offset_U,
818 ®s->OBUF_0U);
819 iowrite32(i915_ggtt_offset(vma) + params->offset_V,
820 ®s->OBUF_0V);
821
822 ostride |= params->stride_UV << 16;
823 }
824
825 iowrite32(swidth, ®s->SWIDTH);
826 iowrite32(swidthsw, ®s->SWIDTHSW);
827 iowrite32(sheight, ®s->SHEIGHT);
828 iowrite32(ostride, ®s->OSTRIDE);
829
830 scale_changed = update_scaling_factors(overlay, regs, params);
831
832 update_colorkey(overlay, regs);
833
834 iowrite32(overlay_cmd_reg(params), ®s->OCMD);
835
836 ret = intel_overlay_continue(overlay, vma, scale_changed);
837 if (ret)
838 goto out_unpin;
839
840 return 0;
841
842out_unpin:
843 i915_gem_object_unpin_from_display_plane(vma);
844out_pin_section:
845 atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
846
847 return ret;
848}
849
850int intel_overlay_switch_off(struct intel_overlay *overlay)
851{
852 struct drm_i915_private *dev_priv = overlay->i915;
853 int ret;
854
855 lockdep_assert_held(&dev_priv->drm.struct_mutex);
856 WARN_ON(!drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
857
858 ret = intel_overlay_recover_from_interrupt(overlay);
859 if (ret != 0)
860 return ret;
861
862 if (!overlay->active)
863 return 0;
864
865 ret = intel_overlay_release_old_vid(overlay);
866 if (ret != 0)
867 return ret;
868
869 iowrite32(0, &overlay->regs->OCMD);
870
871 return intel_overlay_off(overlay);
872}
873
874static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
875 struct intel_crtc *crtc)
876{
877 if (!crtc->active)
878 return -EINVAL;
879
880 /* can't use the overlay with double wide pipe */
881 if (crtc->config->double_wide)
882 return -EINVAL;
883
884 return 0;
885}
886
887static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
888{
889 struct drm_i915_private *dev_priv = overlay->i915;
890 u32 pfit_control = I915_READ(PFIT_CONTROL);
891 u32 ratio;
892
893 /* XXX: This is not the same logic as in the xorg driver, but more in
894 * line with the intel documentation for the i965
895 */
896 if (INTEL_GEN(dev_priv) >= 4) {
897 /* on i965 use the PGM reg to read out the autoscaler values */
898 ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
899 } else {
900 if (pfit_control & VERT_AUTO_SCALE)
901 ratio = I915_READ(PFIT_AUTO_RATIOS);
902 else
903 ratio = I915_READ(PFIT_PGM_RATIOS);
904 ratio >>= PFIT_VERT_SCALE_SHIFT;
905 }
906
907 overlay->pfit_vscale_ratio = ratio;
908}
909
910static int check_overlay_dst(struct intel_overlay *overlay,
911 struct drm_intel_overlay_put_image *rec)
912{
913 const struct intel_crtc_state *pipe_config =
914 overlay->crtc->config;
915
916 if (rec->dst_x < pipe_config->pipe_src_w &&
917 rec->dst_x + rec->dst_width <= pipe_config->pipe_src_w &&
918 rec->dst_y < pipe_config->pipe_src_h &&
919 rec->dst_y + rec->dst_height <= pipe_config->pipe_src_h)
920 return 0;
921 else
922 return -EINVAL;
923}
924
925static int check_overlay_scaling(struct drm_intel_overlay_put_image *rec)
926{
927 u32 tmp;
928
929 /* downscaling limit is 8.0 */
930 tmp = ((rec->src_scan_height << 16) / rec->dst_height) >> 16;
931 if (tmp > 7)
932 return -EINVAL;
933
934 tmp = ((rec->src_scan_width << 16) / rec->dst_width) >> 16;
935 if (tmp > 7)
936 return -EINVAL;
937
938 return 0;
939}
940
941static int check_overlay_src(struct drm_i915_private *dev_priv,
942 struct drm_intel_overlay_put_image *rec,
943 struct drm_i915_gem_object *new_bo)
944{
945 int uv_hscale = uv_hsubsampling(rec->flags);
946 int uv_vscale = uv_vsubsampling(rec->flags);
947 u32 stride_mask;
948 int depth;
949 u32 tmp;
950
951 /* check src dimensions */
952 if (IS_I845G(dev_priv) || IS_I830(dev_priv)) {
953 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
954 rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
955 return -EINVAL;
956 } else {
957 if (rec->src_height > IMAGE_MAX_HEIGHT ||
958 rec->src_width > IMAGE_MAX_WIDTH)
959 return -EINVAL;
960 }
961
962 /* better safe than sorry, use 4 as the maximal subsampling ratio */
963 if (rec->src_height < N_VERT_Y_TAPS*4 ||
964 rec->src_width < N_HORIZ_Y_TAPS*4)
965 return -EINVAL;
966
967 /* check alignment constraints */
968 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
969 case I915_OVERLAY_RGB:
970 /* not implemented */
971 return -EINVAL;
972
973 case I915_OVERLAY_YUV_PACKED:
974 if (uv_vscale != 1)
975 return -EINVAL;
976
977 depth = packed_depth_bytes(rec->flags);
978 if (depth < 0)
979 return depth;
980
981 /* ignore UV planes */
982 rec->stride_UV = 0;
983 rec->offset_U = 0;
984 rec->offset_V = 0;
985 /* check pixel alignment */
986 if (rec->offset_Y % depth)
987 return -EINVAL;
988 break;
989
990 case I915_OVERLAY_YUV_PLANAR:
991 if (uv_vscale < 0 || uv_hscale < 0)
992 return -EINVAL;
993 /* no offset restrictions for planar formats */
994 break;
995
996 default:
997 return -EINVAL;
998 }
999
1000 if (rec->src_width % uv_hscale)
1001 return -EINVAL;
1002
1003 /* stride checking */
1004 if (IS_I830(dev_priv) || IS_I845G(dev_priv))
1005 stride_mask = 255;
1006 else
1007 stride_mask = 63;
1008
1009 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
1010 return -EINVAL;
1011 if (IS_GEN(dev_priv, 4) && rec->stride_Y < 512)
1012 return -EINVAL;
1013
1014 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
1015 4096 : 8192;
1016 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
1017 return -EINVAL;
1018
1019 /* check buffer dimensions */
1020 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
1021 case I915_OVERLAY_RGB:
1022 case I915_OVERLAY_YUV_PACKED:
1023 /* always 4 Y values per depth pixels */
1024 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
1025 return -EINVAL;
1026
1027 tmp = rec->stride_Y*rec->src_height;
1028 if (rec->offset_Y + tmp > new_bo->base.size)
1029 return -EINVAL;
1030 break;
1031
1032 case I915_OVERLAY_YUV_PLANAR:
1033 if (rec->src_width > rec->stride_Y)
1034 return -EINVAL;
1035 if (rec->src_width/uv_hscale > rec->stride_UV)
1036 return -EINVAL;
1037
1038 tmp = rec->stride_Y * rec->src_height;
1039 if (rec->offset_Y + tmp > new_bo->base.size)
1040 return -EINVAL;
1041
1042 tmp = rec->stride_UV * (rec->src_height / uv_vscale);
1043 if (rec->offset_U + tmp > new_bo->base.size ||
1044 rec->offset_V + tmp > new_bo->base.size)
1045 return -EINVAL;
1046 break;
1047 }
1048
1049 return 0;
1050}
1051
1052int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
1053 struct drm_file *file_priv)
1054{
1055 struct drm_intel_overlay_put_image *params = data;
1056 struct drm_i915_private *dev_priv = to_i915(dev);
1057 struct intel_overlay *overlay;
1058 struct drm_crtc *drmmode_crtc;
1059 struct intel_crtc *crtc;
1060 struct drm_i915_gem_object *new_bo;
1061 int ret;
1062
1063 overlay = dev_priv->overlay;
1064 if (!overlay) {
1065 DRM_DEBUG("userspace bug: no overlay\n");
1066 return -ENODEV;
1067 }
1068
1069 if (!(params->flags & I915_OVERLAY_ENABLE)) {
1070 drm_modeset_lock_all(dev);
1071 mutex_lock(&dev->struct_mutex);
1072
1073 ret = intel_overlay_switch_off(overlay);
1074
1075 mutex_unlock(&dev->struct_mutex);
1076 drm_modeset_unlock_all(dev);
1077
1078 return ret;
1079 }
1080
1081 drmmode_crtc = drm_crtc_find(dev, file_priv, params->crtc_id);
1082 if (!drmmode_crtc)
1083 return -ENOENT;
1084 crtc = to_intel_crtc(drmmode_crtc);
1085
1086 new_bo = i915_gem_object_lookup(file_priv, params->bo_handle);
1087 if (!new_bo)
1088 return -ENOENT;
1089
1090 drm_modeset_lock_all(dev);
1091 mutex_lock(&dev->struct_mutex);
1092
1093 if (i915_gem_object_is_tiled(new_bo)) {
1094 DRM_DEBUG_KMS("buffer used for overlay image can not be tiled\n");
1095 ret = -EINVAL;
1096 goto out_unlock;
1097 }
1098
1099 ret = intel_overlay_recover_from_interrupt(overlay);
1100 if (ret != 0)
1101 goto out_unlock;
1102
1103 if (overlay->crtc != crtc) {
1104 ret = intel_overlay_switch_off(overlay);
1105 if (ret != 0)
1106 goto out_unlock;
1107
1108 ret = check_overlay_possible_on_crtc(overlay, crtc);
1109 if (ret != 0)
1110 goto out_unlock;
1111
1112 overlay->crtc = crtc;
1113 crtc->overlay = overlay;
1114
1115 /* line too wide, i.e. one-line-mode */
1116 if (crtc->config->pipe_src_w > 1024 &&
1117 crtc->config->gmch_pfit.control & PFIT_ENABLE) {
1118 overlay->pfit_active = true;
1119 update_pfit_vscale_ratio(overlay);
1120 } else
1121 overlay->pfit_active = false;
1122 }
1123
1124 ret = check_overlay_dst(overlay, params);
1125 if (ret != 0)
1126 goto out_unlock;
1127
1128 if (overlay->pfit_active) {
1129 params->dst_y = (((u32)params->dst_y << 12) /
1130 overlay->pfit_vscale_ratio);
1131 /* shifting right rounds downwards, so add 1 */
1132 params->dst_height = (((u32)params->dst_height << 12) /
1133 overlay->pfit_vscale_ratio) + 1;
1134 }
1135
1136 if (params->src_scan_height > params->src_height ||
1137 params->src_scan_width > params->src_width) {
1138 ret = -EINVAL;
1139 goto out_unlock;
1140 }
1141
1142 ret = check_overlay_src(dev_priv, params, new_bo);
1143 if (ret != 0)
1144 goto out_unlock;
1145
1146 /* Check scaling after src size to prevent a divide-by-zero. */
1147 ret = check_overlay_scaling(params);
1148 if (ret != 0)
1149 goto out_unlock;
1150
1151 ret = intel_overlay_do_put_image(overlay, new_bo, params);
1152 if (ret != 0)
1153 goto out_unlock;
1154
1155 mutex_unlock(&dev->struct_mutex);
1156 drm_modeset_unlock_all(dev);
1157 i915_gem_object_put(new_bo);
1158
1159 return 0;
1160
1161out_unlock:
1162 mutex_unlock(&dev->struct_mutex);
1163 drm_modeset_unlock_all(dev);
1164 i915_gem_object_put(new_bo);
1165
1166 return ret;
1167}
1168
1169static void update_reg_attrs(struct intel_overlay *overlay,
1170 struct overlay_registers __iomem *regs)
1171{
1172 iowrite32((overlay->contrast << 18) | (overlay->brightness & 0xff),
1173 ®s->OCLRC0);
1174 iowrite32(overlay->saturation, ®s->OCLRC1);
1175}
1176
1177static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
1178{
1179 int i;
1180
1181 if (gamma1 & 0xff000000 || gamma2 & 0xff000000)
1182 return false;
1183
1184 for (i = 0; i < 3; i++) {
1185 if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
1186 return false;
1187 }
1188
1189 return true;
1190}
1191
1192static bool check_gamma5_errata(u32 gamma5)
1193{
1194 int i;
1195
1196 for (i = 0; i < 3; i++) {
1197 if (((gamma5 >> i*8) & 0xff) == 0x80)
1198 return false;
1199 }
1200
1201 return true;
1202}
1203
1204static int check_gamma(struct drm_intel_overlay_attrs *attrs)
1205{
1206 if (!check_gamma_bounds(0, attrs->gamma0) ||
1207 !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
1208 !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
1209 !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
1210 !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
1211 !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
1212 !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
1213 return -EINVAL;
1214
1215 if (!check_gamma5_errata(attrs->gamma5))
1216 return -EINVAL;
1217
1218 return 0;
1219}
1220
1221int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
1222 struct drm_file *file_priv)
1223{
1224 struct drm_intel_overlay_attrs *attrs = data;
1225 struct drm_i915_private *dev_priv = to_i915(dev);
1226 struct intel_overlay *overlay;
1227 int ret;
1228
1229 overlay = dev_priv->overlay;
1230 if (!overlay) {
1231 DRM_DEBUG("userspace bug: no overlay\n");
1232 return -ENODEV;
1233 }
1234
1235 drm_modeset_lock_all(dev);
1236 mutex_lock(&dev->struct_mutex);
1237
1238 ret = -EINVAL;
1239 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1240 attrs->color_key = overlay->color_key;
1241 attrs->brightness = overlay->brightness;
1242 attrs->contrast = overlay->contrast;
1243 attrs->saturation = overlay->saturation;
1244
1245 if (!IS_GEN(dev_priv, 2)) {
1246 attrs->gamma0 = I915_READ(OGAMC0);
1247 attrs->gamma1 = I915_READ(OGAMC1);
1248 attrs->gamma2 = I915_READ(OGAMC2);
1249 attrs->gamma3 = I915_READ(OGAMC3);
1250 attrs->gamma4 = I915_READ(OGAMC4);
1251 attrs->gamma5 = I915_READ(OGAMC5);
1252 }
1253 } else {
1254 if (attrs->brightness < -128 || attrs->brightness > 127)
1255 goto out_unlock;
1256 if (attrs->contrast > 255)
1257 goto out_unlock;
1258 if (attrs->saturation > 1023)
1259 goto out_unlock;
1260
1261 overlay->color_key = attrs->color_key;
1262 overlay->brightness = attrs->brightness;
1263 overlay->contrast = attrs->contrast;
1264 overlay->saturation = attrs->saturation;
1265
1266 update_reg_attrs(overlay, overlay->regs);
1267
1268 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1269 if (IS_GEN(dev_priv, 2))
1270 goto out_unlock;
1271
1272 if (overlay->active) {
1273 ret = -EBUSY;
1274 goto out_unlock;
1275 }
1276
1277 ret = check_gamma(attrs);
1278 if (ret)
1279 goto out_unlock;
1280
1281 I915_WRITE(OGAMC0, attrs->gamma0);
1282 I915_WRITE(OGAMC1, attrs->gamma1);
1283 I915_WRITE(OGAMC2, attrs->gamma2);
1284 I915_WRITE(OGAMC3, attrs->gamma3);
1285 I915_WRITE(OGAMC4, attrs->gamma4);
1286 I915_WRITE(OGAMC5, attrs->gamma5);
1287 }
1288 }
1289 overlay->color_key_enabled = (attrs->flags & I915_OVERLAY_DISABLE_DEST_COLORKEY) == 0;
1290
1291 ret = 0;
1292out_unlock:
1293 mutex_unlock(&dev->struct_mutex);
1294 drm_modeset_unlock_all(dev);
1295
1296 return ret;
1297}
1298
1299static int get_registers(struct intel_overlay *overlay, bool use_phys)
1300{
1301 struct drm_i915_private *i915 = overlay->i915;
1302 struct drm_i915_gem_object *obj;
1303 struct i915_vma *vma;
1304 int err;
1305
1306 mutex_lock(&i915->drm.struct_mutex);
1307
1308 obj = i915_gem_object_create_stolen(i915, PAGE_SIZE);
1309 if (obj == NULL)
1310 obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
1311 if (IS_ERR(obj)) {
1312 err = PTR_ERR(obj);
1313 goto err_unlock;
1314 }
1315
1316 vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE);
1317 if (IS_ERR(vma)) {
1318 err = PTR_ERR(vma);
1319 goto err_put_bo;
1320 }
1321
1322 if (use_phys)
1323 overlay->flip_addr = sg_dma_address(obj->mm.pages->sgl);
1324 else
1325 overlay->flip_addr = i915_ggtt_offset(vma);
1326 overlay->regs = i915_vma_pin_iomap(vma);
1327 i915_vma_unpin(vma);
1328
1329 if (IS_ERR(overlay->regs)) {
1330 err = PTR_ERR(overlay->regs);
1331 goto err_put_bo;
1332 }
1333
1334 overlay->reg_bo = obj;
1335 mutex_unlock(&i915->drm.struct_mutex);
1336 return 0;
1337
1338err_put_bo:
1339 i915_gem_object_put(obj);
1340err_unlock:
1341 mutex_unlock(&i915->drm.struct_mutex);
1342 return err;
1343}
1344
1345void intel_overlay_setup(struct drm_i915_private *dev_priv)
1346{
1347 struct intel_overlay *overlay;
1348 int ret;
1349
1350 if (!HAS_OVERLAY(dev_priv))
1351 return;
1352
1353 if (!HAS_ENGINE(dev_priv, RCS0))
1354 return;
1355
1356 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
1357 if (!overlay)
1358 return;
1359
1360 overlay->i915 = dev_priv;
1361 overlay->context = dev_priv->engine[RCS0]->kernel_context;
1362 GEM_BUG_ON(!overlay->context);
1363
1364 overlay->color_key = 0x0101fe;
1365 overlay->color_key_enabled = true;
1366 overlay->brightness = -19;
1367 overlay->contrast = 75;
1368 overlay->saturation = 146;
1369
1370 i915_active_init(dev_priv,
1371 &overlay->last_flip,
1372 NULL, intel_overlay_last_flip_retire);
1373
1374 ret = get_registers(overlay, OVERLAY_NEEDS_PHYSICAL(dev_priv));
1375 if (ret)
1376 goto out_free;
1377
1378 memset_io(overlay->regs, 0, sizeof(struct overlay_registers));
1379 update_polyphase_filter(overlay->regs);
1380 update_reg_attrs(overlay, overlay->regs);
1381
1382 dev_priv->overlay = overlay;
1383 DRM_INFO("Initialized overlay support.\n");
1384 return;
1385
1386out_free:
1387 kfree(overlay);
1388}
1389
1390void intel_overlay_cleanup(struct drm_i915_private *dev_priv)
1391{
1392 struct intel_overlay *overlay;
1393
1394 overlay = fetch_and_zero(&dev_priv->overlay);
1395 if (!overlay)
1396 return;
1397
1398 /*
1399 * The bo's should be free'd by the generic code already.
1400 * Furthermore modesetting teardown happens beforehand so the
1401 * hardware should be off already.
1402 */
1403 WARN_ON(overlay->active);
1404
1405 i915_gem_object_put(overlay->reg_bo);
1406 i915_active_fini(&overlay->last_flip);
1407
1408 kfree(overlay);
1409}
1410
1411#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
1412
1413struct intel_overlay_error_state {
1414 struct overlay_registers regs;
1415 unsigned long base;
1416 u32 dovsta;
1417 u32 isr;
1418};
1419
1420struct intel_overlay_error_state *
1421intel_overlay_capture_error_state(struct drm_i915_private *dev_priv)
1422{
1423 struct intel_overlay *overlay = dev_priv->overlay;
1424 struct intel_overlay_error_state *error;
1425
1426 if (!overlay || !overlay->active)
1427 return NULL;
1428
1429 error = kmalloc(sizeof(*error), GFP_ATOMIC);
1430 if (error == NULL)
1431 return NULL;
1432
1433 error->dovsta = I915_READ(DOVSTA);
1434 error->isr = I915_READ(GEN2_ISR);
1435 error->base = overlay->flip_addr;
1436
1437 memcpy_fromio(&error->regs, overlay->regs, sizeof(error->regs));
1438
1439 return error;
1440}
1441
1442void
1443intel_overlay_print_error_state(struct drm_i915_error_state_buf *m,
1444 struct intel_overlay_error_state *error)
1445{
1446 i915_error_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
1447 error->dovsta, error->isr);
1448 i915_error_printf(m, " Register file at 0x%08lx:\n",
1449 error->base);
1450
1451#define P(x) i915_error_printf(m, " " #x ": 0x%08x\n", error->regs.x)
1452 P(OBUF_0Y);
1453 P(OBUF_1Y);
1454 P(OBUF_0U);
1455 P(OBUF_0V);
1456 P(OBUF_1U);
1457 P(OBUF_1V);
1458 P(OSTRIDE);
1459 P(YRGB_VPH);
1460 P(UV_VPH);
1461 P(HORZ_PH);
1462 P(INIT_PHS);
1463 P(DWINPOS);
1464 P(DWINSZ);
1465 P(SWIDTH);
1466 P(SWIDTHSW);
1467 P(SHEIGHT);
1468 P(YRGBSCALE);
1469 P(UVSCALE);
1470 P(OCLRC0);
1471 P(OCLRC1);
1472 P(DCLRKV);
1473 P(DCLRKM);
1474 P(SCLRKVH);
1475 P(SCLRKVL);
1476 P(SCLRKEN);
1477 P(OCONFIG);
1478 P(OCMD);
1479 P(OSTART_0Y);
1480 P(OSTART_1Y);
1481 P(OSTART_0U);
1482 P(OSTART_0V);
1483 P(OSTART_1U);
1484 P(OSTART_1V);
1485 P(OTILEOFF_0Y);
1486 P(OTILEOFF_1Y);
1487 P(OTILEOFF_0U);
1488 P(OTILEOFF_0V);
1489 P(OTILEOFF_1U);
1490 P(OTILEOFF_1V);
1491 P(FASTHSCALE);
1492 P(UVSCALEV);
1493#undef P
1494}
1495
1496#endif