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