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drm/i915: Apply HWSTAM workaround for BSD ring on SandyBridge
[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_overlay.c
1 /*
2 * Copyright © 2009
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 * Daniel Vetter <daniel@ffwll.ch>
25 *
26 * Derived from Xorg ddx, xf86-video-intel, src/i830_video.c
27 */
28
29 #include <linux/seq_file.h>
30 #include "drmP.h"
31 #include "drm.h"
32 #include "i915_drm.h"
33 #include "i915_drv.h"
34 #include "i915_reg.h"
35 #include "intel_drv.h"
36
37 /* Limits for overlay size. According to intel doc, the real limits are:
38 * Y width: 4095, UV width (planar): 2047, Y height: 2047,
39 * UV width (planar): * 1023. But the xorg thinks 2048 for height and width. Use
40 * the mininum of both. */
41 #define IMAGE_MAX_WIDTH 2048
42 #define IMAGE_MAX_HEIGHT 2046 /* 2 * 1023 */
43 /* on 830 and 845 these large limits result in the card hanging */
44 #define IMAGE_MAX_WIDTH_LEGACY 1024
45 #define IMAGE_MAX_HEIGHT_LEGACY 1088
46
47 /* overlay register definitions */
48 /* OCMD register */
49 #define OCMD_TILED_SURFACE (0x1<<19)
50 #define OCMD_MIRROR_MASK (0x3<<17)
51 #define OCMD_MIRROR_MODE (0x3<<17)
52 #define OCMD_MIRROR_HORIZONTAL (0x1<<17)
53 #define OCMD_MIRROR_VERTICAL (0x2<<17)
54 #define OCMD_MIRROR_BOTH (0x3<<17)
55 #define OCMD_BYTEORDER_MASK (0x3<<14) /* zero for YUYV or FOURCC YUY2 */
56 #define OCMD_UV_SWAP (0x1<<14) /* YVYU */
57 #define OCMD_Y_SWAP (0x2<<14) /* UYVY or FOURCC UYVY */
58 #define OCMD_Y_AND_UV_SWAP (0x3<<14) /* VYUY */
59 #define OCMD_SOURCE_FORMAT_MASK (0xf<<10)
60 #define OCMD_RGB_888 (0x1<<10) /* not in i965 Intel docs */
61 #define OCMD_RGB_555 (0x2<<10) /* not in i965 Intel docs */
62 #define OCMD_RGB_565 (0x3<<10) /* not in i965 Intel docs */
63 #define OCMD_YUV_422_PACKED (0x8<<10)
64 #define OCMD_YUV_411_PACKED (0x9<<10) /* not in i965 Intel docs */
65 #define OCMD_YUV_420_PLANAR (0xc<<10)
66 #define OCMD_YUV_422_PLANAR (0xd<<10)
67 #define OCMD_YUV_410_PLANAR (0xe<<10) /* also 411 */
68 #define OCMD_TVSYNCFLIP_PARITY (0x1<<9)
69 #define OCMD_TVSYNCFLIP_ENABLE (0x1<<7)
70 #define OCMD_BUF_TYPE_MASK (0x1<<5)
71 #define OCMD_BUF_TYPE_FRAME (0x0<<5)
72 #define OCMD_BUF_TYPE_FIELD (0x1<<5)
73 #define OCMD_TEST_MODE (0x1<<4)
74 #define OCMD_BUFFER_SELECT (0x3<<2)
75 #define OCMD_BUFFER0 (0x0<<2)
76 #define OCMD_BUFFER1 (0x1<<2)
77 #define OCMD_FIELD_SELECT (0x1<<2)
78 #define OCMD_FIELD0 (0x0<<1)
79 #define OCMD_FIELD1 (0x1<<1)
80 #define OCMD_ENABLE (0x1<<0)
81
82 /* OCONFIG register */
83 #define OCONF_PIPE_MASK (0x1<<18)
84 #define OCONF_PIPE_A (0x0<<18)
85 #define OCONF_PIPE_B (0x1<<18)
86 #define OCONF_GAMMA2_ENABLE (0x1<<16)
87 #define OCONF_CSC_MODE_BT601 (0x0<<5)
88 #define OCONF_CSC_MODE_BT709 (0x1<<5)
89 #define OCONF_CSC_BYPASS (0x1<<4)
90 #define OCONF_CC_OUT_8BIT (0x1<<3)
91 #define OCONF_TEST_MODE (0x1<<2)
92 #define OCONF_THREE_LINE_BUFFER (0x1<<0)
93 #define OCONF_TWO_LINE_BUFFER (0x0<<0)
94
95 /* DCLRKM (dst-key) register */
96 #define DST_KEY_ENABLE (0x1<<31)
97 #define CLK_RGB24_MASK 0x0
98 #define CLK_RGB16_MASK 0x070307
99 #define CLK_RGB15_MASK 0x070707
100 #define CLK_RGB8I_MASK 0xffffff
101
102 #define RGB16_TO_COLORKEY(c) \
103 (((c & 0xF800) << 8) | ((c & 0x07E0) << 5) | ((c & 0x001F) << 3))
104 #define RGB15_TO_COLORKEY(c) \
105 (((c & 0x7c00) << 9) | ((c & 0x03E0) << 6) | ((c & 0x001F) << 3))
106
107 /* overlay flip addr flag */
108 #define OFC_UPDATE 0x1
109
110 /* polyphase filter coefficients */
111 #define N_HORIZ_Y_TAPS 5
112 #define N_VERT_Y_TAPS 3
113 #define N_HORIZ_UV_TAPS 3
114 #define N_VERT_UV_TAPS 3
115 #define N_PHASES 17
116 #define MAX_TAPS 5
117
118 /* memory bufferd overlay registers */
119 struct overlay_registers {
120 u32 OBUF_0Y;
121 u32 OBUF_1Y;
122 u32 OBUF_0U;
123 u32 OBUF_0V;
124 u32 OBUF_1U;
125 u32 OBUF_1V;
126 u32 OSTRIDE;
127 u32 YRGB_VPH;
128 u32 UV_VPH;
129 u32 HORZ_PH;
130 u32 INIT_PHS;
131 u32 DWINPOS;
132 u32 DWINSZ;
133 u32 SWIDTH;
134 u32 SWIDTHSW;
135 u32 SHEIGHT;
136 u32 YRGBSCALE;
137 u32 UVSCALE;
138 u32 OCLRC0;
139 u32 OCLRC1;
140 u32 DCLRKV;
141 u32 DCLRKM;
142 u32 SCLRKVH;
143 u32 SCLRKVL;
144 u32 SCLRKEN;
145 u32 OCONFIG;
146 u32 OCMD;
147 u32 RESERVED1; /* 0x6C */
148 u32 OSTART_0Y;
149 u32 OSTART_1Y;
150 u32 OSTART_0U;
151 u32 OSTART_0V;
152 u32 OSTART_1U;
153 u32 OSTART_1V;
154 u32 OTILEOFF_0Y;
155 u32 OTILEOFF_1Y;
156 u32 OTILEOFF_0U;
157 u32 OTILEOFF_0V;
158 u32 OTILEOFF_1U;
159 u32 OTILEOFF_1V;
160 u32 FASTHSCALE; /* 0xA0 */
161 u32 UVSCALEV; /* 0xA4 */
162 u32 RESERVEDC[(0x200 - 0xA8) / 4]; /* 0xA8 - 0x1FC */
163 u16 Y_VCOEFS[N_VERT_Y_TAPS * N_PHASES]; /* 0x200 */
164 u16 RESERVEDD[0x100 / 2 - N_VERT_Y_TAPS * N_PHASES];
165 u16 Y_HCOEFS[N_HORIZ_Y_TAPS * N_PHASES]; /* 0x300 */
166 u16 RESERVEDE[0x200 / 2 - N_HORIZ_Y_TAPS * N_PHASES];
167 u16 UV_VCOEFS[N_VERT_UV_TAPS * N_PHASES]; /* 0x500 */
168 u16 RESERVEDF[0x100 / 2 - N_VERT_UV_TAPS * N_PHASES];
169 u16 UV_HCOEFS[N_HORIZ_UV_TAPS * N_PHASES]; /* 0x600 */
170 u16 RESERVEDG[0x100 / 2 - N_HORIZ_UV_TAPS * N_PHASES];
171 };
172
173 struct intel_overlay {
174 struct drm_device *dev;
175 struct intel_crtc *crtc;
176 struct drm_i915_gem_object *vid_bo;
177 struct drm_i915_gem_object *old_vid_bo;
178 int active;
179 int pfit_active;
180 u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
181 u32 color_key;
182 u32 brightness, contrast, saturation;
183 u32 old_xscale, old_yscale;
184 /* register access */
185 u32 flip_addr;
186 struct drm_i915_gem_object *reg_bo;
187 /* flip handling */
188 uint32_t last_flip_req;
189 void (*flip_tail)(struct intel_overlay *);
190 };
191
192 static struct overlay_registers *
193 intel_overlay_map_regs(struct intel_overlay *overlay)
194 {
195 drm_i915_private_t *dev_priv = overlay->dev->dev_private;
196 struct overlay_registers *regs;
197
198 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
199 regs = overlay->reg_bo->phys_obj->handle->vaddr;
200 else
201 regs = io_mapping_map_wc(dev_priv->mm.gtt_mapping,
202 overlay->reg_bo->gtt_offset);
203
204 return regs;
205 }
206
207 static void intel_overlay_unmap_regs(struct intel_overlay *overlay,
208 struct overlay_registers *regs)
209 {
210 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
211 io_mapping_unmap(regs);
212 }
213
214 static int intel_overlay_do_wait_request(struct intel_overlay *overlay,
215 struct drm_i915_gem_request *request,
216 void (*tail)(struct intel_overlay *))
217 {
218 struct drm_device *dev = overlay->dev;
219 drm_i915_private_t *dev_priv = dev->dev_private;
220 int ret;
221
222 BUG_ON(overlay->last_flip_req);
223 ret = i915_add_request(LP_RING(dev_priv), NULL, request);
224 if (ret) {
225 kfree(request);
226 return ret;
227 }
228 overlay->last_flip_req = request->seqno;
229 overlay->flip_tail = tail;
230 ret = i915_wait_request(LP_RING(dev_priv), overlay->last_flip_req);
231 if (ret)
232 return ret;
233
234 overlay->last_flip_req = 0;
235 return 0;
236 }
237
238 /* Workaround for i830 bug where pipe a must be enable to change control regs */
239 static int
240 i830_activate_pipe_a(struct drm_device *dev)
241 {
242 drm_i915_private_t *dev_priv = dev->dev_private;
243 struct intel_crtc *crtc;
244 struct drm_crtc_helper_funcs *crtc_funcs;
245 struct drm_display_mode vesa_640x480 = {
246 DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
247 752, 800, 0, 480, 489, 492, 525, 0,
248 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)
249 }, *mode;
250
251 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[0]);
252 if (crtc->dpms_mode == DRM_MODE_DPMS_ON)
253 return 0;
254
255 /* most i8xx have pipe a forced on, so don't trust dpms mode */
256 if (I915_READ(_PIPEACONF) & PIPECONF_ENABLE)
257 return 0;
258
259 crtc_funcs = crtc->base.helper_private;
260 if (crtc_funcs->dpms == NULL)
261 return 0;
262
263 DRM_DEBUG_DRIVER("Enabling pipe A in order to enable overlay\n");
264
265 mode = drm_mode_duplicate(dev, &vesa_640x480);
266 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
267 if(!drm_crtc_helper_set_mode(&crtc->base, mode,
268 crtc->base.x, crtc->base.y,
269 crtc->base.fb))
270 return 0;
271
272 crtc_funcs->dpms(&crtc->base, DRM_MODE_DPMS_ON);
273 return 1;
274 }
275
276 static void
277 i830_deactivate_pipe_a(struct drm_device *dev)
278 {
279 drm_i915_private_t *dev_priv = dev->dev_private;
280 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[0];
281 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
282
283 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
284 }
285
286 /* overlay needs to be disable in OCMD reg */
287 static int intel_overlay_on(struct intel_overlay *overlay)
288 {
289 struct drm_device *dev = overlay->dev;
290 struct drm_i915_private *dev_priv = dev->dev_private;
291 struct drm_i915_gem_request *request;
292 int pipe_a_quirk = 0;
293 int ret;
294
295 BUG_ON(overlay->active);
296 overlay->active = 1;
297
298 if (IS_I830(dev)) {
299 pipe_a_quirk = i830_activate_pipe_a(dev);
300 if (pipe_a_quirk < 0)
301 return pipe_a_quirk;
302 }
303
304 request = kzalloc(sizeof(*request), GFP_KERNEL);
305 if (request == NULL) {
306 ret = -ENOMEM;
307 goto out;
308 }
309
310 ret = BEGIN_LP_RING(4);
311 if (ret) {
312 kfree(request);
313 goto out;
314 }
315
316 OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_ON);
317 OUT_RING(overlay->flip_addr | OFC_UPDATE);
318 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
319 OUT_RING(MI_NOOP);
320 ADVANCE_LP_RING();
321
322 ret = intel_overlay_do_wait_request(overlay, request, NULL);
323 out:
324 if (pipe_a_quirk)
325 i830_deactivate_pipe_a(dev);
326
327 return ret;
328 }
329
330 /* overlay needs to be enabled in OCMD reg */
331 static int intel_overlay_continue(struct intel_overlay *overlay,
332 bool load_polyphase_filter)
333 {
334 struct drm_device *dev = overlay->dev;
335 drm_i915_private_t *dev_priv = dev->dev_private;
336 struct drm_i915_gem_request *request;
337 u32 flip_addr = overlay->flip_addr;
338 u32 tmp;
339 int ret;
340
341 BUG_ON(!overlay->active);
342
343 request = kzalloc(sizeof(*request), GFP_KERNEL);
344 if (request == NULL)
345 return -ENOMEM;
346
347 if (load_polyphase_filter)
348 flip_addr |= OFC_UPDATE;
349
350 /* check for underruns */
351 tmp = I915_READ(DOVSTA);
352 if (tmp & (1 << 17))
353 DRM_DEBUG("overlay underrun, DOVSTA: %x\n", tmp);
354
355 ret = BEGIN_LP_RING(2);
356 if (ret) {
357 kfree(request);
358 return ret;
359 }
360 OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
361 OUT_RING(flip_addr);
362 ADVANCE_LP_RING();
363
364 ret = i915_add_request(LP_RING(dev_priv), NULL, request);
365 if (ret) {
366 kfree(request);
367 return ret;
368 }
369
370 overlay->last_flip_req = request->seqno;
371 return 0;
372 }
373
374 static void intel_overlay_release_old_vid_tail(struct intel_overlay *overlay)
375 {
376 struct drm_i915_gem_object *obj = overlay->old_vid_bo;
377
378 i915_gem_object_unpin(obj);
379 drm_gem_object_unreference(&obj->base);
380
381 overlay->old_vid_bo = NULL;
382 }
383
384 static void intel_overlay_off_tail(struct intel_overlay *overlay)
385 {
386 struct drm_i915_gem_object *obj = overlay->vid_bo;
387
388 /* never have the overlay hw on without showing a frame */
389 BUG_ON(!overlay->vid_bo);
390
391 i915_gem_object_unpin(obj);
392 drm_gem_object_unreference(&obj->base);
393 overlay->vid_bo = NULL;
394
395 overlay->crtc->overlay = NULL;
396 overlay->crtc = NULL;
397 overlay->active = 0;
398 }
399
400 /* overlay needs to be disabled in OCMD reg */
401 static int intel_overlay_off(struct intel_overlay *overlay)
402 {
403 struct drm_device *dev = overlay->dev;
404 struct drm_i915_private *dev_priv = dev->dev_private;
405 u32 flip_addr = overlay->flip_addr;
406 struct drm_i915_gem_request *request;
407 int ret;
408
409 BUG_ON(!overlay->active);
410
411 request = kzalloc(sizeof(*request), GFP_KERNEL);
412 if (request == NULL)
413 return -ENOMEM;
414
415 /* According to intel docs the overlay hw may hang (when switching
416 * off) without loading the filter coeffs. It is however unclear whether
417 * this applies to the disabling of the overlay or to the switching off
418 * of the hw. Do it in both cases */
419 flip_addr |= OFC_UPDATE;
420
421 ret = BEGIN_LP_RING(6);
422 if (ret) {
423 kfree(request);
424 return ret;
425 }
426 /* wait for overlay to go idle */
427 OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
428 OUT_RING(flip_addr);
429 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
430 /* turn overlay off */
431 OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
432 OUT_RING(flip_addr);
433 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
434 ADVANCE_LP_RING();
435
436 return intel_overlay_do_wait_request(overlay, request,
437 intel_overlay_off_tail);
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. */
442 static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay)
443 {
444 struct drm_device *dev = overlay->dev;
445 drm_i915_private_t *dev_priv = dev->dev_private;
446 int ret;
447
448 if (overlay->last_flip_req == 0)
449 return 0;
450
451 ret = i915_wait_request(LP_RING(dev_priv), overlay->last_flip_req);
452 if (ret)
453 return ret;
454
455 if (overlay->flip_tail)
456 overlay->flip_tail(overlay);
457
458 overlay->last_flip_req = 0;
459 return 0;
460 }
461
462 /* Wait for pending overlay flip and release old frame.
463 * Needs to be called before the overlay register are changed
464 * via intel_overlay_(un)map_regs
465 */
466 static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
467 {
468 struct drm_device *dev = overlay->dev;
469 drm_i915_private_t *dev_priv = dev->dev_private;
470 int ret;
471
472 /* Only wait if there is actually an old frame to release to
473 * guarantee forward progress.
474 */
475 if (!overlay->old_vid_bo)
476 return 0;
477
478 if (I915_READ(ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT) {
479 struct drm_i915_gem_request *request;
480
481 /* synchronous slowpath */
482 request = kzalloc(sizeof(*request), GFP_KERNEL);
483 if (request == NULL)
484 return -ENOMEM;
485
486 ret = BEGIN_LP_RING(2);
487 if (ret) {
488 kfree(request);
489 return ret;
490 }
491
492 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
493 OUT_RING(MI_NOOP);
494 ADVANCE_LP_RING();
495
496 ret = intel_overlay_do_wait_request(overlay, request,
497 intel_overlay_release_old_vid_tail);
498 if (ret)
499 return ret;
500 }
501
502 intel_overlay_release_old_vid_tail(overlay);
503 return 0;
504 }
505
506 struct put_image_params {
507 int format;
508 short dst_x;
509 short dst_y;
510 short dst_w;
511 short dst_h;
512 short src_w;
513 short src_scan_h;
514 short src_scan_w;
515 short src_h;
516 short stride_Y;
517 short stride_UV;
518 int offset_Y;
519 int offset_U;
520 int offset_V;
521 };
522
523 static int packed_depth_bytes(u32 format)
524 {
525 switch (format & I915_OVERLAY_DEPTH_MASK) {
526 case I915_OVERLAY_YUV422:
527 return 4;
528 case I915_OVERLAY_YUV411:
529 /* return 6; not implemented */
530 default:
531 return -EINVAL;
532 }
533 }
534
535 static int packed_width_bytes(u32 format, short width)
536 {
537 switch (format & I915_OVERLAY_DEPTH_MASK) {
538 case I915_OVERLAY_YUV422:
539 return width << 1;
540 default:
541 return -EINVAL;
542 }
543 }
544
545 static int uv_hsubsampling(u32 format)
546 {
547 switch (format & I915_OVERLAY_DEPTH_MASK) {
548 case I915_OVERLAY_YUV422:
549 case I915_OVERLAY_YUV420:
550 return 2;
551 case I915_OVERLAY_YUV411:
552 case I915_OVERLAY_YUV410:
553 return 4;
554 default:
555 return -EINVAL;
556 }
557 }
558
559 static int uv_vsubsampling(u32 format)
560 {
561 switch (format & I915_OVERLAY_DEPTH_MASK) {
562 case I915_OVERLAY_YUV420:
563 case I915_OVERLAY_YUV410:
564 return 2;
565 case I915_OVERLAY_YUV422:
566 case I915_OVERLAY_YUV411:
567 return 1;
568 default:
569 return -EINVAL;
570 }
571 }
572
573 static u32 calc_swidthsw(struct drm_device *dev, u32 offset, u32 width)
574 {
575 u32 mask, shift, ret;
576 if (IS_GEN2(dev)) {
577 mask = 0x1f;
578 shift = 5;
579 } else {
580 mask = 0x3f;
581 shift = 6;
582 }
583 ret = ((offset + width + mask) >> shift) - (offset >> shift);
584 if (!IS_GEN2(dev))
585 ret <<= 1;
586 ret -=1;
587 return ret << 2;
588 }
589
590 static const u16 y_static_hcoeffs[N_HORIZ_Y_TAPS * N_PHASES] = {
591 0x3000, 0xb4a0, 0x1930, 0x1920, 0xb4a0,
592 0x3000, 0xb500, 0x19d0, 0x1880, 0xb440,
593 0x3000, 0xb540, 0x1a88, 0x2f80, 0xb3e0,
594 0x3000, 0xb580, 0x1b30, 0x2e20, 0xb380,
595 0x3000, 0xb5c0, 0x1bd8, 0x2cc0, 0xb320,
596 0x3020, 0xb5e0, 0x1c60, 0x2b80, 0xb2c0,
597 0x3020, 0xb5e0, 0x1cf8, 0x2a20, 0xb260,
598 0x3020, 0xb5e0, 0x1d80, 0x28e0, 0xb200,
599 0x3020, 0xb5c0, 0x1e08, 0x3f40, 0xb1c0,
600 0x3020, 0xb580, 0x1e78, 0x3ce0, 0xb160,
601 0x3040, 0xb520, 0x1ed8, 0x3aa0, 0xb120,
602 0x3040, 0xb4a0, 0x1f30, 0x3880, 0xb0e0,
603 0x3040, 0xb400, 0x1f78, 0x3680, 0xb0a0,
604 0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060,
605 0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040,
606 0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020,
607 0xb000, 0x3000, 0x0800, 0x3000, 0xb000
608 };
609
610 static const u16 uv_static_hcoeffs[N_HORIZ_UV_TAPS * N_PHASES] = {
611 0x3000, 0x1800, 0x1800, 0xb000, 0x18d0, 0x2e60,
612 0xb000, 0x1990, 0x2ce0, 0xb020, 0x1a68, 0x2b40,
613 0xb040, 0x1b20, 0x29e0, 0xb060, 0x1bd8, 0x2880,
614 0xb080, 0x1c88, 0x3e60, 0xb0a0, 0x1d28, 0x3c00,
615 0xb0c0, 0x1db8, 0x39e0, 0xb0e0, 0x1e40, 0x37e0,
616 0xb100, 0x1eb8, 0x3620, 0xb100, 0x1f18, 0x34a0,
617 0xb100, 0x1f68, 0x3360, 0xb0e0, 0x1fa8, 0x3240,
618 0xb0c0, 0x1fe0, 0x3140, 0xb060, 0x1ff0, 0x30a0,
619 0x3000, 0x0800, 0x3000
620 };
621
622 static void update_polyphase_filter(struct overlay_registers *regs)
623 {
624 memcpy(regs->Y_HCOEFS, y_static_hcoeffs, sizeof(y_static_hcoeffs));
625 memcpy(regs->UV_HCOEFS, uv_static_hcoeffs, sizeof(uv_static_hcoeffs));
626 }
627
628 static bool update_scaling_factors(struct intel_overlay *overlay,
629 struct overlay_registers *regs,
630 struct put_image_params *params)
631 {
632 /* fixed point with a 12 bit shift */
633 u32 xscale, yscale, xscale_UV, yscale_UV;
634 #define FP_SHIFT 12
635 #define FRACT_MASK 0xfff
636 bool scale_changed = false;
637 int uv_hscale = uv_hsubsampling(params->format);
638 int uv_vscale = uv_vsubsampling(params->format);
639
640 if (params->dst_w > 1)
641 xscale = ((params->src_scan_w - 1) << FP_SHIFT)
642 /(params->dst_w);
643 else
644 xscale = 1 << FP_SHIFT;
645
646 if (params->dst_h > 1)
647 yscale = ((params->src_scan_h - 1) << FP_SHIFT)
648 /(params->dst_h);
649 else
650 yscale = 1 << FP_SHIFT;
651
652 /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/
653 xscale_UV = xscale/uv_hscale;
654 yscale_UV = yscale/uv_vscale;
655 /* make the Y scale to UV scale ratio an exact multiply */
656 xscale = xscale_UV * uv_hscale;
657 yscale = yscale_UV * uv_vscale;
658 /*} else {
659 xscale_UV = 0;
660 yscale_UV = 0;
661 }*/
662
663 if (xscale != overlay->old_xscale || yscale != overlay->old_yscale)
664 scale_changed = true;
665 overlay->old_xscale = xscale;
666 overlay->old_yscale = yscale;
667
668 regs->YRGBSCALE = (((yscale & FRACT_MASK) << 20) |
669 ((xscale >> FP_SHIFT) << 16) |
670 ((xscale & FRACT_MASK) << 3));
671
672 regs->UVSCALE = (((yscale_UV & FRACT_MASK) << 20) |
673 ((xscale_UV >> FP_SHIFT) << 16) |
674 ((xscale_UV & FRACT_MASK) << 3));
675
676 regs->UVSCALEV = ((((yscale >> FP_SHIFT) << 16) |
677 ((yscale_UV >> FP_SHIFT) << 0)));
678
679 if (scale_changed)
680 update_polyphase_filter(regs);
681
682 return scale_changed;
683 }
684
685 static void update_colorkey(struct intel_overlay *overlay,
686 struct overlay_registers *regs)
687 {
688 u32 key = overlay->color_key;
689
690 switch (overlay->crtc->base.fb->bits_per_pixel) {
691 case 8:
692 regs->DCLRKV = 0;
693 regs->DCLRKM = CLK_RGB8I_MASK | DST_KEY_ENABLE;
694 break;
695
696 case 16:
697 if (overlay->crtc->base.fb->depth == 15) {
698 regs->DCLRKV = RGB15_TO_COLORKEY(key);
699 regs->DCLRKM = CLK_RGB15_MASK | DST_KEY_ENABLE;
700 } else {
701 regs->DCLRKV = RGB16_TO_COLORKEY(key);
702 regs->DCLRKM = CLK_RGB16_MASK | DST_KEY_ENABLE;
703 }
704 break;
705
706 case 24:
707 case 32:
708 regs->DCLRKV = key;
709 regs->DCLRKM = CLK_RGB24_MASK | DST_KEY_ENABLE;
710 break;
711 }
712 }
713
714 static u32 overlay_cmd_reg(struct put_image_params *params)
715 {
716 u32 cmd = OCMD_ENABLE | OCMD_BUF_TYPE_FRAME | OCMD_BUFFER0;
717
718 if (params->format & I915_OVERLAY_YUV_PLANAR) {
719 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
720 case I915_OVERLAY_YUV422:
721 cmd |= OCMD_YUV_422_PLANAR;
722 break;
723 case I915_OVERLAY_YUV420:
724 cmd |= OCMD_YUV_420_PLANAR;
725 break;
726 case I915_OVERLAY_YUV411:
727 case I915_OVERLAY_YUV410:
728 cmd |= OCMD_YUV_410_PLANAR;
729 break;
730 }
731 } else { /* YUV packed */
732 switch (params->format & I915_OVERLAY_DEPTH_MASK) {
733 case I915_OVERLAY_YUV422:
734 cmd |= OCMD_YUV_422_PACKED;
735 break;
736 case I915_OVERLAY_YUV411:
737 cmd |= OCMD_YUV_411_PACKED;
738 break;
739 }
740
741 switch (params->format & I915_OVERLAY_SWAP_MASK) {
742 case I915_OVERLAY_NO_SWAP:
743 break;
744 case I915_OVERLAY_UV_SWAP:
745 cmd |= OCMD_UV_SWAP;
746 break;
747 case I915_OVERLAY_Y_SWAP:
748 cmd |= OCMD_Y_SWAP;
749 break;
750 case I915_OVERLAY_Y_AND_UV_SWAP:
751 cmd |= OCMD_Y_AND_UV_SWAP;
752 break;
753 }
754 }
755
756 return cmd;
757 }
758
759 static int intel_overlay_do_put_image(struct intel_overlay *overlay,
760 struct drm_i915_gem_object *new_bo,
761 struct put_image_params *params)
762 {
763 int ret, tmp_width;
764 struct overlay_registers *regs;
765 bool scale_changed = false;
766 struct drm_device *dev = overlay->dev;
767
768 BUG_ON(!mutex_is_locked(&dev->struct_mutex));
769 BUG_ON(!mutex_is_locked(&dev->mode_config.mutex));
770 BUG_ON(!overlay);
771
772 ret = intel_overlay_release_old_vid(overlay);
773 if (ret != 0)
774 return ret;
775
776 ret = i915_gem_object_pin(new_bo, PAGE_SIZE, true);
777 if (ret != 0)
778 return ret;
779
780 ret = i915_gem_object_set_to_gtt_domain(new_bo, 0);
781 if (ret != 0)
782 goto out_unpin;
783
784 ret = i915_gem_object_put_fence(new_bo);
785 if (ret)
786 goto out_unpin;
787
788 if (!overlay->active) {
789 regs = intel_overlay_map_regs(overlay);
790 if (!regs) {
791 ret = -ENOMEM;
792 goto out_unpin;
793 }
794 regs->OCONFIG = OCONF_CC_OUT_8BIT;
795 if (IS_GEN4(overlay->dev))
796 regs->OCONFIG |= OCONF_CSC_MODE_BT709;
797 regs->OCONFIG |= overlay->crtc->pipe == 0 ?
798 OCONF_PIPE_A : OCONF_PIPE_B;
799 intel_overlay_unmap_regs(overlay, regs);
800
801 ret = intel_overlay_on(overlay);
802 if (ret != 0)
803 goto out_unpin;
804 }
805
806 regs = intel_overlay_map_regs(overlay);
807 if (!regs) {
808 ret = -ENOMEM;
809 goto out_unpin;
810 }
811
812 regs->DWINPOS = (params->dst_y << 16) | params->dst_x;
813 regs->DWINSZ = (params->dst_h << 16) | params->dst_w;
814
815 if (params->format & I915_OVERLAY_YUV_PACKED)
816 tmp_width = packed_width_bytes(params->format, params->src_w);
817 else
818 tmp_width = params->src_w;
819
820 regs->SWIDTH = params->src_w;
821 regs->SWIDTHSW = calc_swidthsw(overlay->dev,
822 params->offset_Y, tmp_width);
823 regs->SHEIGHT = params->src_h;
824 regs->OBUF_0Y = new_bo->gtt_offset + params-> offset_Y;
825 regs->OSTRIDE = params->stride_Y;
826
827 if (params->format & I915_OVERLAY_YUV_PLANAR) {
828 int uv_hscale = uv_hsubsampling(params->format);
829 int uv_vscale = uv_vsubsampling(params->format);
830 u32 tmp_U, tmp_V;
831 regs->SWIDTH |= (params->src_w/uv_hscale) << 16;
832 tmp_U = calc_swidthsw(overlay->dev, params->offset_U,
833 params->src_w/uv_hscale);
834 tmp_V = calc_swidthsw(overlay->dev, params->offset_V,
835 params->src_w/uv_hscale);
836 regs->SWIDTHSW |= max_t(u32, tmp_U, tmp_V) << 16;
837 regs->SHEIGHT |= (params->src_h/uv_vscale) << 16;
838 regs->OBUF_0U = new_bo->gtt_offset + params->offset_U;
839 regs->OBUF_0V = new_bo->gtt_offset + params->offset_V;
840 regs->OSTRIDE |= params->stride_UV << 16;
841 }
842
843 scale_changed = update_scaling_factors(overlay, regs, params);
844
845 update_colorkey(overlay, regs);
846
847 regs->OCMD = overlay_cmd_reg(params);
848
849 intel_overlay_unmap_regs(overlay, regs);
850
851 ret = intel_overlay_continue(overlay, scale_changed);
852 if (ret)
853 goto out_unpin;
854
855 overlay->old_vid_bo = overlay->vid_bo;
856 overlay->vid_bo = new_bo;
857
858 return 0;
859
860 out_unpin:
861 i915_gem_object_unpin(new_bo);
862 return ret;
863 }
864
865 int intel_overlay_switch_off(struct intel_overlay *overlay)
866 {
867 struct overlay_registers *regs;
868 struct drm_device *dev = overlay->dev;
869 int ret;
870
871 BUG_ON(!mutex_is_locked(&dev->struct_mutex));
872 BUG_ON(!mutex_is_locked(&dev->mode_config.mutex));
873
874 ret = intel_overlay_recover_from_interrupt(overlay);
875 if (ret != 0)
876 return ret;
877
878 if (!overlay->active)
879 return 0;
880
881 ret = intel_overlay_release_old_vid(overlay);
882 if (ret != 0)
883 return ret;
884
885 regs = intel_overlay_map_regs(overlay);
886 regs->OCMD = 0;
887 intel_overlay_unmap_regs(overlay, regs);
888
889 ret = intel_overlay_off(overlay);
890 if (ret != 0)
891 return ret;
892
893 intel_overlay_off_tail(overlay);
894 return 0;
895 }
896
897 static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
898 struct intel_crtc *crtc)
899 {
900 drm_i915_private_t *dev_priv = overlay->dev->dev_private;
901
902 if (!crtc->active)
903 return -EINVAL;
904
905 /* can't use the overlay with double wide pipe */
906 if (INTEL_INFO(overlay->dev)->gen < 4 &&
907 (I915_READ(PIPECONF(crtc->pipe)) & (PIPECONF_DOUBLE_WIDE | PIPECONF_ENABLE)) != PIPECONF_ENABLE)
908 return -EINVAL;
909
910 return 0;
911 }
912
913 static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
914 {
915 struct drm_device *dev = overlay->dev;
916 drm_i915_private_t *dev_priv = dev->dev_private;
917 u32 pfit_control = I915_READ(PFIT_CONTROL);
918 u32 ratio;
919
920 /* XXX: This is not the same logic as in the xorg driver, but more in
921 * line with the intel documentation for the i965
922 */
923 if (INTEL_INFO(dev)->gen >= 4) {
924 /* on i965 use the PGM reg to read out the autoscaler values */
925 ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
926 } else {
927 if (pfit_control & VERT_AUTO_SCALE)
928 ratio = I915_READ(PFIT_AUTO_RATIOS);
929 else
930 ratio = I915_READ(PFIT_PGM_RATIOS);
931 ratio >>= PFIT_VERT_SCALE_SHIFT;
932 }
933
934 overlay->pfit_vscale_ratio = ratio;
935 }
936
937 static int check_overlay_dst(struct intel_overlay *overlay,
938 struct drm_intel_overlay_put_image *rec)
939 {
940 struct drm_display_mode *mode = &overlay->crtc->base.mode;
941
942 if (rec->dst_x < mode->crtc_hdisplay &&
943 rec->dst_x + rec->dst_width <= mode->crtc_hdisplay &&
944 rec->dst_y < mode->crtc_vdisplay &&
945 rec->dst_y + rec->dst_height <= mode->crtc_vdisplay)
946 return 0;
947 else
948 return -EINVAL;
949 }
950
951 static int check_overlay_scaling(struct put_image_params *rec)
952 {
953 u32 tmp;
954
955 /* downscaling limit is 8.0 */
956 tmp = ((rec->src_scan_h << 16) / rec->dst_h) >> 16;
957 if (tmp > 7)
958 return -EINVAL;
959 tmp = ((rec->src_scan_w << 16) / rec->dst_w) >> 16;
960 if (tmp > 7)
961 return -EINVAL;
962
963 return 0;
964 }
965
966 static int check_overlay_src(struct drm_device *dev,
967 struct drm_intel_overlay_put_image *rec,
968 struct drm_i915_gem_object *new_bo)
969 {
970 int uv_hscale = uv_hsubsampling(rec->flags);
971 int uv_vscale = uv_vsubsampling(rec->flags);
972 u32 stride_mask;
973 int depth;
974 u32 tmp;
975
976 /* check src dimensions */
977 if (IS_845G(dev) || IS_I830(dev)) {
978 if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
979 rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
980 return -EINVAL;
981 } else {
982 if (rec->src_height > IMAGE_MAX_HEIGHT ||
983 rec->src_width > IMAGE_MAX_WIDTH)
984 return -EINVAL;
985 }
986
987 /* better safe than sorry, use 4 as the maximal subsampling ratio */
988 if (rec->src_height < N_VERT_Y_TAPS*4 ||
989 rec->src_width < N_HORIZ_Y_TAPS*4)
990 return -EINVAL;
991
992 /* check alignment constraints */
993 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
994 case I915_OVERLAY_RGB:
995 /* not implemented */
996 return -EINVAL;
997
998 case I915_OVERLAY_YUV_PACKED:
999 if (uv_vscale != 1)
1000 return -EINVAL;
1001
1002 depth = packed_depth_bytes(rec->flags);
1003 if (depth < 0)
1004 return depth;
1005
1006 /* ignore UV planes */
1007 rec->stride_UV = 0;
1008 rec->offset_U = 0;
1009 rec->offset_V = 0;
1010 /* check pixel alignment */
1011 if (rec->offset_Y % depth)
1012 return -EINVAL;
1013 break;
1014
1015 case I915_OVERLAY_YUV_PLANAR:
1016 if (uv_vscale < 0 || uv_hscale < 0)
1017 return -EINVAL;
1018 /* no offset restrictions for planar formats */
1019 break;
1020
1021 default:
1022 return -EINVAL;
1023 }
1024
1025 if (rec->src_width % uv_hscale)
1026 return -EINVAL;
1027
1028 /* stride checking */
1029 if (IS_I830(dev) || IS_845G(dev))
1030 stride_mask = 255;
1031 else
1032 stride_mask = 63;
1033
1034 if (rec->stride_Y & stride_mask || rec->stride_UV & stride_mask)
1035 return -EINVAL;
1036 if (IS_GEN4(dev) && rec->stride_Y < 512)
1037 return -EINVAL;
1038
1039 tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
1040 4096 : 8192;
1041 if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
1042 return -EINVAL;
1043
1044 /* check buffer dimensions */
1045 switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
1046 case I915_OVERLAY_RGB:
1047 case I915_OVERLAY_YUV_PACKED:
1048 /* always 4 Y values per depth pixels */
1049 if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
1050 return -EINVAL;
1051
1052 tmp = rec->stride_Y*rec->src_height;
1053 if (rec->offset_Y + tmp > new_bo->base.size)
1054 return -EINVAL;
1055 break;
1056
1057 case I915_OVERLAY_YUV_PLANAR:
1058 if (rec->src_width > rec->stride_Y)
1059 return -EINVAL;
1060 if (rec->src_width/uv_hscale > rec->stride_UV)
1061 return -EINVAL;
1062
1063 tmp = rec->stride_Y * rec->src_height;
1064 if (rec->offset_Y + tmp > new_bo->base.size)
1065 return -EINVAL;
1066
1067 tmp = rec->stride_UV * (rec->src_height / uv_vscale);
1068 if (rec->offset_U + tmp > new_bo->base.size ||
1069 rec->offset_V + tmp > new_bo->base.size)
1070 return -EINVAL;
1071 break;
1072 }
1073
1074 return 0;
1075 }
1076
1077 /**
1078 * Return the pipe currently connected to the panel fitter,
1079 * or -1 if the panel fitter is not present or not in use
1080 */
1081 static int intel_panel_fitter_pipe(struct drm_device *dev)
1082 {
1083 struct drm_i915_private *dev_priv = dev->dev_private;
1084 u32 pfit_control;
1085
1086 /* i830 doesn't have a panel fitter */
1087 if (IS_I830(dev))
1088 return -1;
1089
1090 pfit_control = I915_READ(PFIT_CONTROL);
1091
1092 /* See if the panel fitter is in use */
1093 if ((pfit_control & PFIT_ENABLE) == 0)
1094 return -1;
1095
1096 /* 965 can place panel fitter on either pipe */
1097 if (IS_GEN4(dev))
1098 return (pfit_control >> 29) & 0x3;
1099
1100 /* older chips can only use pipe 1 */
1101 return 1;
1102 }
1103
1104 int intel_overlay_put_image(struct drm_device *dev, void *data,
1105 struct drm_file *file_priv)
1106 {
1107 struct drm_intel_overlay_put_image *put_image_rec = data;
1108 drm_i915_private_t *dev_priv = dev->dev_private;
1109 struct intel_overlay *overlay;
1110 struct drm_mode_object *drmmode_obj;
1111 struct intel_crtc *crtc;
1112 struct drm_i915_gem_object *new_bo;
1113 struct put_image_params *params;
1114 int ret;
1115
1116 if (!dev_priv) {
1117 DRM_ERROR("called with no initialization\n");
1118 return -EINVAL;
1119 }
1120
1121 overlay = dev_priv->overlay;
1122 if (!overlay) {
1123 DRM_DEBUG("userspace bug: no overlay\n");
1124 return -ENODEV;
1125 }
1126
1127 if (!(put_image_rec->flags & I915_OVERLAY_ENABLE)) {
1128 mutex_lock(&dev->mode_config.mutex);
1129 mutex_lock(&dev->struct_mutex);
1130
1131 ret = intel_overlay_switch_off(overlay);
1132
1133 mutex_unlock(&dev->struct_mutex);
1134 mutex_unlock(&dev->mode_config.mutex);
1135
1136 return ret;
1137 }
1138
1139 params = kmalloc(sizeof(struct put_image_params), GFP_KERNEL);
1140 if (!params)
1141 return -ENOMEM;
1142
1143 drmmode_obj = drm_mode_object_find(dev, put_image_rec->crtc_id,
1144 DRM_MODE_OBJECT_CRTC);
1145 if (!drmmode_obj) {
1146 ret = -ENOENT;
1147 goto out_free;
1148 }
1149 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
1150
1151 new_bo = to_intel_bo(drm_gem_object_lookup(dev, file_priv,
1152 put_image_rec->bo_handle));
1153 if (&new_bo->base == NULL) {
1154 ret = -ENOENT;
1155 goto out_free;
1156 }
1157
1158 mutex_lock(&dev->mode_config.mutex);
1159 mutex_lock(&dev->struct_mutex);
1160
1161 if (new_bo->tiling_mode) {
1162 DRM_ERROR("buffer used for overlay image can not be tiled\n");
1163 ret = -EINVAL;
1164 goto out_unlock;
1165 }
1166
1167 ret = intel_overlay_recover_from_interrupt(overlay);
1168 if (ret != 0)
1169 goto out_unlock;
1170
1171 if (overlay->crtc != crtc) {
1172 struct drm_display_mode *mode = &crtc->base.mode;
1173 ret = intel_overlay_switch_off(overlay);
1174 if (ret != 0)
1175 goto out_unlock;
1176
1177 ret = check_overlay_possible_on_crtc(overlay, crtc);
1178 if (ret != 0)
1179 goto out_unlock;
1180
1181 overlay->crtc = crtc;
1182 crtc->overlay = overlay;
1183
1184 /* line too wide, i.e. one-line-mode */
1185 if (mode->hdisplay > 1024 &&
1186 intel_panel_fitter_pipe(dev) == crtc->pipe) {
1187 overlay->pfit_active = 1;
1188 update_pfit_vscale_ratio(overlay);
1189 } else
1190 overlay->pfit_active = 0;
1191 }
1192
1193 ret = check_overlay_dst(overlay, put_image_rec);
1194 if (ret != 0)
1195 goto out_unlock;
1196
1197 if (overlay->pfit_active) {
1198 params->dst_y = ((((u32)put_image_rec->dst_y) << 12) /
1199 overlay->pfit_vscale_ratio);
1200 /* shifting right rounds downwards, so add 1 */
1201 params->dst_h = ((((u32)put_image_rec->dst_height) << 12) /
1202 overlay->pfit_vscale_ratio) + 1;
1203 } else {
1204 params->dst_y = put_image_rec->dst_y;
1205 params->dst_h = put_image_rec->dst_height;
1206 }
1207 params->dst_x = put_image_rec->dst_x;
1208 params->dst_w = put_image_rec->dst_width;
1209
1210 params->src_w = put_image_rec->src_width;
1211 params->src_h = put_image_rec->src_height;
1212 params->src_scan_w = put_image_rec->src_scan_width;
1213 params->src_scan_h = put_image_rec->src_scan_height;
1214 if (params->src_scan_h > params->src_h ||
1215 params->src_scan_w > params->src_w) {
1216 ret = -EINVAL;
1217 goto out_unlock;
1218 }
1219
1220 ret = check_overlay_src(dev, put_image_rec, new_bo);
1221 if (ret != 0)
1222 goto out_unlock;
1223 params->format = put_image_rec->flags & ~I915_OVERLAY_FLAGS_MASK;
1224 params->stride_Y = put_image_rec->stride_Y;
1225 params->stride_UV = put_image_rec->stride_UV;
1226 params->offset_Y = put_image_rec->offset_Y;
1227 params->offset_U = put_image_rec->offset_U;
1228 params->offset_V = put_image_rec->offset_V;
1229
1230 /* Check scaling after src size to prevent a divide-by-zero. */
1231 ret = check_overlay_scaling(params);
1232 if (ret != 0)
1233 goto out_unlock;
1234
1235 ret = intel_overlay_do_put_image(overlay, new_bo, params);
1236 if (ret != 0)
1237 goto out_unlock;
1238
1239 mutex_unlock(&dev->struct_mutex);
1240 mutex_unlock(&dev->mode_config.mutex);
1241
1242 kfree(params);
1243
1244 return 0;
1245
1246 out_unlock:
1247 mutex_unlock(&dev->struct_mutex);
1248 mutex_unlock(&dev->mode_config.mutex);
1249 drm_gem_object_unreference_unlocked(&new_bo->base);
1250 out_free:
1251 kfree(params);
1252
1253 return ret;
1254 }
1255
1256 static void update_reg_attrs(struct intel_overlay *overlay,
1257 struct overlay_registers *regs)
1258 {
1259 regs->OCLRC0 = (overlay->contrast << 18) | (overlay->brightness & 0xff);
1260 regs->OCLRC1 = overlay->saturation;
1261 }
1262
1263 static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
1264 {
1265 int i;
1266
1267 if (gamma1 & 0xff000000 || gamma2 & 0xff000000)
1268 return false;
1269
1270 for (i = 0; i < 3; i++) {
1271 if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
1272 return false;
1273 }
1274
1275 return true;
1276 }
1277
1278 static bool check_gamma5_errata(u32 gamma5)
1279 {
1280 int i;
1281
1282 for (i = 0; i < 3; i++) {
1283 if (((gamma5 >> i*8) & 0xff) == 0x80)
1284 return false;
1285 }
1286
1287 return true;
1288 }
1289
1290 static int check_gamma(struct drm_intel_overlay_attrs *attrs)
1291 {
1292 if (!check_gamma_bounds(0, attrs->gamma0) ||
1293 !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
1294 !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
1295 !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
1296 !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
1297 !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
1298 !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
1299 return -EINVAL;
1300
1301 if (!check_gamma5_errata(attrs->gamma5))
1302 return -EINVAL;
1303
1304 return 0;
1305 }
1306
1307 int intel_overlay_attrs(struct drm_device *dev, void *data,
1308 struct drm_file *file_priv)
1309 {
1310 struct drm_intel_overlay_attrs *attrs = data;
1311 drm_i915_private_t *dev_priv = dev->dev_private;
1312 struct intel_overlay *overlay;
1313 struct overlay_registers *regs;
1314 int ret;
1315
1316 if (!dev_priv) {
1317 DRM_ERROR("called with no initialization\n");
1318 return -EINVAL;
1319 }
1320
1321 overlay = dev_priv->overlay;
1322 if (!overlay) {
1323 DRM_DEBUG("userspace bug: no overlay\n");
1324 return -ENODEV;
1325 }
1326
1327 mutex_lock(&dev->mode_config.mutex);
1328 mutex_lock(&dev->struct_mutex);
1329
1330 ret = -EINVAL;
1331 if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
1332 attrs->color_key = overlay->color_key;
1333 attrs->brightness = overlay->brightness;
1334 attrs->contrast = overlay->contrast;
1335 attrs->saturation = overlay->saturation;
1336
1337 if (!IS_GEN2(dev)) {
1338 attrs->gamma0 = I915_READ(OGAMC0);
1339 attrs->gamma1 = I915_READ(OGAMC1);
1340 attrs->gamma2 = I915_READ(OGAMC2);
1341 attrs->gamma3 = I915_READ(OGAMC3);
1342 attrs->gamma4 = I915_READ(OGAMC4);
1343 attrs->gamma5 = I915_READ(OGAMC5);
1344 }
1345 } else {
1346 if (attrs->brightness < -128 || attrs->brightness > 127)
1347 goto out_unlock;
1348 if (attrs->contrast > 255)
1349 goto out_unlock;
1350 if (attrs->saturation > 1023)
1351 goto out_unlock;
1352
1353 overlay->color_key = attrs->color_key;
1354 overlay->brightness = attrs->brightness;
1355 overlay->contrast = attrs->contrast;
1356 overlay->saturation = attrs->saturation;
1357
1358 regs = intel_overlay_map_regs(overlay);
1359 if (!regs) {
1360 ret = -ENOMEM;
1361 goto out_unlock;
1362 }
1363
1364 update_reg_attrs(overlay, regs);
1365
1366 intel_overlay_unmap_regs(overlay, regs);
1367
1368 if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
1369 if (IS_GEN2(dev))
1370 goto out_unlock;
1371
1372 if (overlay->active) {
1373 ret = -EBUSY;
1374 goto out_unlock;
1375 }
1376
1377 ret = check_gamma(attrs);
1378 if (ret)
1379 goto out_unlock;
1380
1381 I915_WRITE(OGAMC0, attrs->gamma0);
1382 I915_WRITE(OGAMC1, attrs->gamma1);
1383 I915_WRITE(OGAMC2, attrs->gamma2);
1384 I915_WRITE(OGAMC3, attrs->gamma3);
1385 I915_WRITE(OGAMC4, attrs->gamma4);
1386 I915_WRITE(OGAMC5, attrs->gamma5);
1387 }
1388 }
1389
1390 ret = 0;
1391 out_unlock:
1392 mutex_unlock(&dev->struct_mutex);
1393 mutex_unlock(&dev->mode_config.mutex);
1394
1395 return ret;
1396 }
1397
1398 void intel_setup_overlay(struct drm_device *dev)
1399 {
1400 drm_i915_private_t *dev_priv = dev->dev_private;
1401 struct intel_overlay *overlay;
1402 struct drm_i915_gem_object *reg_bo;
1403 struct overlay_registers *regs;
1404 int ret;
1405
1406 if (!HAS_OVERLAY(dev))
1407 return;
1408
1409 overlay = kzalloc(sizeof(struct intel_overlay), GFP_KERNEL);
1410 if (!overlay)
1411 return;
1412 overlay->dev = dev;
1413
1414 reg_bo = i915_gem_alloc_object(dev, PAGE_SIZE);
1415 if (!reg_bo)
1416 goto out_free;
1417 overlay->reg_bo = reg_bo;
1418
1419 if (OVERLAY_NEEDS_PHYSICAL(dev)) {
1420 ret = i915_gem_attach_phys_object(dev, reg_bo,
1421 I915_GEM_PHYS_OVERLAY_REGS,
1422 PAGE_SIZE);
1423 if (ret) {
1424 DRM_ERROR("failed to attach phys overlay regs\n");
1425 goto out_free_bo;
1426 }
1427 overlay->flip_addr = reg_bo->phys_obj->handle->busaddr;
1428 } else {
1429 ret = i915_gem_object_pin(reg_bo, PAGE_SIZE, true);
1430 if (ret) {
1431 DRM_ERROR("failed to pin overlay register bo\n");
1432 goto out_free_bo;
1433 }
1434 overlay->flip_addr = reg_bo->gtt_offset;
1435
1436 ret = i915_gem_object_set_to_gtt_domain(reg_bo, true);
1437 if (ret) {
1438 DRM_ERROR("failed to move overlay register bo into the GTT\n");
1439 goto out_unpin_bo;
1440 }
1441 }
1442
1443 /* init all values */
1444 overlay->color_key = 0x0101fe;
1445 overlay->brightness = -19;
1446 overlay->contrast = 75;
1447 overlay->saturation = 146;
1448
1449 regs = intel_overlay_map_regs(overlay);
1450 if (!regs)
1451 goto out_free_bo;
1452
1453 memset(regs, 0, sizeof(struct overlay_registers));
1454 update_polyphase_filter(regs);
1455 update_reg_attrs(overlay, regs);
1456
1457 intel_overlay_unmap_regs(overlay, regs);
1458
1459 dev_priv->overlay = overlay;
1460 DRM_INFO("initialized overlay support\n");
1461 return;
1462
1463 out_unpin_bo:
1464 i915_gem_object_unpin(reg_bo);
1465 out_free_bo:
1466 drm_gem_object_unreference(&reg_bo->base);
1467 out_free:
1468 kfree(overlay);
1469 return;
1470 }
1471
1472 void intel_cleanup_overlay(struct drm_device *dev)
1473 {
1474 drm_i915_private_t *dev_priv = dev->dev_private;
1475
1476 if (!dev_priv->overlay)
1477 return;
1478
1479 /* The bo's should be free'd by the generic code already.
1480 * Furthermore modesetting teardown happens beforehand so the
1481 * hardware should be off already */
1482 BUG_ON(dev_priv->overlay->active);
1483
1484 drm_gem_object_unreference_unlocked(&dev_priv->overlay->reg_bo->base);
1485 kfree(dev_priv->overlay);
1486 }
1487
1488 #ifdef CONFIG_DEBUG_FS
1489 #include <linux/seq_file.h>
1490
1491 struct intel_overlay_error_state {
1492 struct overlay_registers regs;
1493 unsigned long base;
1494 u32 dovsta;
1495 u32 isr;
1496 };
1497
1498 static struct overlay_registers *
1499 intel_overlay_map_regs_atomic(struct intel_overlay *overlay)
1500 {
1501 drm_i915_private_t *dev_priv = overlay->dev->dev_private;
1502 struct overlay_registers *regs;
1503
1504 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1505 regs = overlay->reg_bo->phys_obj->handle->vaddr;
1506 else
1507 regs = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping,
1508 overlay->reg_bo->gtt_offset);
1509
1510 return regs;
1511 }
1512
1513 static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay,
1514 struct overlay_registers *regs)
1515 {
1516 if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1517 io_mapping_unmap_atomic(regs);
1518 }
1519
1520
1521 struct intel_overlay_error_state *
1522 intel_overlay_capture_error_state(struct drm_device *dev)
1523 {
1524 drm_i915_private_t *dev_priv = dev->dev_private;
1525 struct intel_overlay *overlay = dev_priv->overlay;
1526 struct intel_overlay_error_state *error;
1527 struct overlay_registers __iomem *regs;
1528
1529 if (!overlay || !overlay->active)
1530 return NULL;
1531
1532 error = kmalloc(sizeof(*error), GFP_ATOMIC);
1533 if (error == NULL)
1534 return NULL;
1535
1536 error->dovsta = I915_READ(DOVSTA);
1537 error->isr = I915_READ(ISR);
1538 if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
1539 error->base = (long) overlay->reg_bo->phys_obj->handle->vaddr;
1540 else
1541 error->base = (long) overlay->reg_bo->gtt_offset;
1542
1543 regs = intel_overlay_map_regs_atomic(overlay);
1544 if (!regs)
1545 goto err;
1546
1547 memcpy_fromio(&error->regs, regs, sizeof(struct overlay_registers));
1548 intel_overlay_unmap_regs_atomic(overlay, regs);
1549
1550 return error;
1551
1552 err:
1553 kfree(error);
1554 return NULL;
1555 }
1556
1557 void
1558 intel_overlay_print_error_state(struct seq_file *m, struct intel_overlay_error_state *error)
1559 {
1560 seq_printf(m, "Overlay, status: 0x%08x, interrupt: 0x%08x\n",
1561 error->dovsta, error->isr);
1562 seq_printf(m, " Register file at 0x%08lx:\n",
1563 error->base);
1564
1565 #define P(x) seq_printf(m, " " #x ": 0x%08x\n", error->regs.x)
1566 P(OBUF_0Y);
1567 P(OBUF_1Y);
1568 P(OBUF_0U);
1569 P(OBUF_0V);
1570 P(OBUF_1U);
1571 P(OBUF_1V);
1572 P(OSTRIDE);
1573 P(YRGB_VPH);
1574 P(UV_VPH);
1575 P(HORZ_PH);
1576 P(INIT_PHS);
1577 P(DWINPOS);
1578 P(DWINSZ);
1579 P(SWIDTH);
1580 P(SWIDTHSW);
1581 P(SHEIGHT);
1582 P(YRGBSCALE);
1583 P(UVSCALE);
1584 P(OCLRC0);
1585 P(OCLRC1);
1586 P(DCLRKV);
1587 P(DCLRKM);
1588 P(SCLRKVH);
1589 P(SCLRKVL);
1590 P(SCLRKEN);
1591 P(OCONFIG);
1592 P(OCMD);
1593 P(OSTART_0Y);
1594 P(OSTART_1Y);
1595 P(OSTART_0U);
1596 P(OSTART_0V);
1597 P(OSTART_1U);
1598 P(OSTART_1V);
1599 P(OTILEOFF_0Y);
1600 P(OTILEOFF_1Y);
1601 P(OTILEOFF_0U);
1602 P(OTILEOFF_0V);
1603 P(OTILEOFF_1U);
1604 P(OTILEOFF_1V);
1605 P(FASTHSCALE);
1606 P(UVSCALEV);
1607 #undef P
1608 }
1609 #endif
Linux kernel - Deliverables
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