Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Loading...
   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2016 MediaTek Inc.
 * Author: Daniel Hsiao <daniel.hsiao@mediatek.com>
 *	Kai-Sean Yang <kai-sean.yang@mediatek.com>
 *	Tiffany Lin <tiffany.lin@mediatek.com>
 */

#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/syscalls.h>
#include <linux/delay.h>
#include <linux/time.h>

#include "../../common/mtk_vcodec_intr.h"
#include "../vdec_drv_base.h"
#include "../vdec_vpu_if.h"

#define VP9_MAX_SUPER_FRAMES_NUM 8
#define VP9_SUPER_FRAME_BS_SZ 64
#define MAX_VP9_DPB_SIZE	9

#define REFS_PER_FRAME 3
#define MAX_NUM_REF_FRAMES 8
#define VP9_MAX_FRM_BUF_NUM 9
#define VP9_MAX_FRM_BUF_NODE_NUM (VP9_MAX_FRM_BUF_NUM * 2)
#define VP9_SEG_ID_SZ 0x12000

/**
 * struct vp9_dram_buf - contains buffer info for vpu
 * @va : cpu address
 * @pa : iova address
 * @sz : buffer size
 * @padding : for 64 bytes alignment
 */
struct vp9_dram_buf {
	unsigned long va;
	unsigned long pa;
	unsigned int sz;
	unsigned int padding;
};

/**
 * struct vp9_fb_info - contains frame buffer info
 * @fb : frmae buffer
 * @reserved : reserved field used by vpu
 */
struct vp9_fb_info {
	struct vdec_fb *fb;
	unsigned int reserved[32];
};

/**
 * struct vp9_ref_cnt_buf - contains reference buffer information
 * @buf : referenced frame buffer
 * @ref_cnt : referenced frame buffer's reference count.
 *	When reference count=0, remove it from reference list
 */
struct vp9_ref_cnt_buf {
	struct vp9_fb_info buf;
	unsigned int ref_cnt;
};

/**
 * struct vp9_ref_buf - contains current frame's reference buffer information
 * @buf : reference buffer
 * @idx : reference buffer index to frm_bufs
 * @reserved : reserved field used by vpu
 */
struct vp9_ref_buf {
	struct vp9_fb_info *buf;
	unsigned int idx;
	unsigned int reserved[6];
};

/**
 * struct vp9_sf_ref_fb - contains frame buffer info
 * @fb : super frame reference frame buffer
 * @used : this reference frame info entry is used
 * @padding : for 64 bytes size align
 */
struct vp9_sf_ref_fb {
	struct vdec_fb fb;
	int used;
	int padding;
};

/*
 * struct vdec_vp9_vsi - shared buffer between host and VPU firmware
 *	AP-W/R : AP is writer/reader on this item
 *	VPU-W/R: VPU is write/reader on this item
 * @sf_bs_buf : super frame backup buffer (AP-W, VPU-R)
 * @sf_ref_fb : record supoer frame reference buffer information
 *	(AP-R/W, VPU-R/W)
 * @sf_next_ref_fb_idx : next available super frame (AP-W, VPU-R)
 * @sf_frm_cnt : super frame count, filled by vpu (AP-R, VPU-W)
 * @sf_frm_offset : super frame offset, filled by vpu (AP-R, VPU-W)
 * @sf_frm_sz : super frame size, filled by vpu (AP-R, VPU-W)
 * @sf_frm_idx : current super frame (AP-R, VPU-W)
 * @sf_init : inform super frame info already parsed by vpu (AP-R, VPU-W)
 * @fb : capture buffer (AP-W, VPU-R)
 * @bs : bs buffer (AP-W, VPU-R)
 * @cur_fb : current show capture buffer (AP-R/W, VPU-R/W)
 * @pic_w : picture width (AP-R, VPU-W)
 * @pic_h : picture height (AP-R, VPU-W)
 * @buf_w : codec width (AP-R, VPU-W)
 * @buf_h : coded height (AP-R, VPU-W)
 * @buf_sz_y_bs : ufo compressed y plane size (AP-R, VPU-W)
 * @buf_sz_c_bs : ufo compressed cbcr plane size (AP-R, VPU-W)
 * @buf_len_sz_y : size used to store y plane ufo info (AP-R, VPU-W)
 * @buf_len_sz_c : size used to store cbcr plane ufo info (AP-R, VPU-W)

 * @profile : profile sparsed from vpu (AP-R, VPU-W)
 * @show_frame : [BIT(0)] display this frame or not (AP-R, VPU-W)
 *	[BIT(1)] reset segment data or not (AP-R, VPU-W)
 *	[BIT(2)] trig decoder hardware or not (AP-R, VPU-W)
 *	[BIT(3)] ask VPU to set bits(0~4) accordingly (AP-W, VPU-R)
 *	[BIT(4)] do not reset segment data before every frame (AP-R, VPU-W)
 * @show_existing_frame : inform this frame is show existing frame
 *	(AP-R, VPU-W)
 * @frm_to_show_idx : index to show frame (AP-R, VPU-W)

 * @refresh_frm_flags : indicate when frame need to refine reference count
 *	(AP-R, VPU-W)
 * @resolution_changed : resolution change in this frame (AP-R, VPU-W)

 * @frm_bufs : maintain reference buffer info (AP-R/W, VPU-R/W)
 * @ref_frm_map : maintain reference buffer map info (AP-R/W, VPU-R/W)
 * @new_fb_idx : index to frm_bufs array (AP-R, VPU-W)
 * @frm_num : decoded frame number, include sub-frame count (AP-R, VPU-W)
 * @mv_buf : motion vector working buffer (AP-W, VPU-R)
 * @frm_refs : maintain three reference buffer info (AP-R/W, VPU-R/W)
 * @seg_id_buf : segmentation map working buffer (AP-W, VPU-R)
 */
struct vdec_vp9_vsi {
	unsigned char sf_bs_buf[VP9_SUPER_FRAME_BS_SZ];
	struct vp9_sf_ref_fb sf_ref_fb[VP9_MAX_SUPER_FRAMES_NUM];
	int sf_next_ref_fb_idx;
	unsigned int sf_frm_cnt;
	unsigned int sf_frm_offset[VP9_MAX_SUPER_FRAMES_NUM];
	unsigned int sf_frm_sz[VP9_MAX_SUPER_FRAMES_NUM];
	unsigned int sf_frm_idx;
	unsigned int sf_init;
	struct vdec_fb fb;
	struct mtk_vcodec_mem bs;
	struct vdec_fb cur_fb;
	unsigned int pic_w;
	unsigned int pic_h;
	unsigned int buf_w;
	unsigned int buf_h;
	unsigned int buf_sz_y_bs;
	unsigned int buf_sz_c_bs;
	unsigned int buf_len_sz_y;
	unsigned int buf_len_sz_c;
	unsigned int profile;
	unsigned int show_frame;
	unsigned int show_existing_frame;
	unsigned int frm_to_show_idx;
	unsigned int refresh_frm_flags;
	unsigned int resolution_changed;

	struct vp9_ref_cnt_buf frm_bufs[VP9_MAX_FRM_BUF_NUM];
	int ref_frm_map[MAX_NUM_REF_FRAMES];
	unsigned int new_fb_idx;
	unsigned int frm_num;
	struct vp9_dram_buf mv_buf;

	struct vp9_ref_buf frm_refs[REFS_PER_FRAME];
	struct vp9_dram_buf seg_id_buf;

};

/*
 * struct vdec_vp9_inst - vp9 decode instance
 * @mv_buf : working buffer for mv
 * @seg_id_buf : working buffer for segmentation map
 * @dec_fb : vdec_fb node to link fb to different fb_xxx_list
 * @available_fb_node_list : current available vdec_fb node
 * @fb_use_list : current used or referenced vdec_fb
 * @fb_free_list : current available to free vdec_fb
 * @fb_disp_list : current available to display vdec_fb
 * @cur_fb : current frame buffer
 * @ctx : current decode context
 * @vpu : vpu instance information
 * @vsi : shared buffer between host and VPU firmware
 * @total_frm_cnt : total frame count, it do not include sub-frames in super
 *	    frame
 * @mem : instance memory information
 */
struct vdec_vp9_inst {
	struct mtk_vcodec_mem mv_buf;
	struct mtk_vcodec_mem seg_id_buf;

	struct vdec_fb_node dec_fb[VP9_MAX_FRM_BUF_NODE_NUM];
	struct list_head available_fb_node_list;
	struct list_head fb_use_list;
	struct list_head fb_free_list;
	struct list_head fb_disp_list;
	struct vdec_fb *cur_fb;
	struct mtk_vcodec_dec_ctx *ctx;
	struct vdec_vpu_inst vpu;
	struct vdec_vp9_vsi *vsi;
	unsigned int total_frm_cnt;
	struct mtk_vcodec_mem mem;
};

static bool vp9_is_sf_ref_fb(struct vdec_vp9_inst *inst, struct vdec_fb *fb)
{
	int i;
	struct vdec_vp9_vsi *vsi = inst->vsi;

	for (i = 0; i < ARRAY_SIZE(vsi->sf_ref_fb); i++) {
		if (fb == &vsi->sf_ref_fb[i].fb)
			return true;
	}
	return false;
}

static struct vdec_fb *vp9_rm_from_fb_use_list(struct vdec_vp9_inst
					*inst, void *addr)
{
	struct vdec_fb *fb = NULL;
	struct vdec_fb_node *node;

	list_for_each_entry(node, &inst->fb_use_list, list) {
		fb = (struct vdec_fb *)node->fb;
		if (fb->base_y.va == addr) {
			list_move_tail(&node->list,
				       &inst->available_fb_node_list);
			return fb;
		}
	}

	return NULL;
}

static void vp9_add_to_fb_free_list(struct vdec_vp9_inst *inst,
			     struct vdec_fb *fb)
{
	struct vdec_fb_node *node;

	if (fb) {
		node = list_first_entry_or_null(&inst->available_fb_node_list,
					struct vdec_fb_node, list);

		if (node) {
			node->fb = fb;
			list_move_tail(&node->list, &inst->fb_free_list);
		}
	} else {
		mtk_vdec_debug(inst->ctx, "No free fb node");
	}
}

static void vp9_free_sf_ref_fb(struct vdec_fb *fb)
{
	struct vp9_sf_ref_fb *sf_ref_fb =
		container_of(fb, struct vp9_sf_ref_fb, fb);

	sf_ref_fb->used = 0;
}

static void vp9_ref_cnt_fb(struct vdec_vp9_inst *inst, int *idx,
			   int new_idx)
{
	struct vdec_vp9_vsi *vsi = inst->vsi;
	int ref_idx = *idx;

	if (ref_idx >= 0 && vsi->frm_bufs[ref_idx].ref_cnt > 0) {
		vsi->frm_bufs[ref_idx].ref_cnt--;

		if (vsi->frm_bufs[ref_idx].ref_cnt == 0) {
			if (!vp9_is_sf_ref_fb(inst,
					      vsi->frm_bufs[ref_idx].buf.fb)) {
				struct vdec_fb *fb;

				fb = vp9_rm_from_fb_use_list(inst,
				     vsi->frm_bufs[ref_idx].buf.fb->base_y.va);
				vp9_add_to_fb_free_list(inst, fb);
			} else
				vp9_free_sf_ref_fb(
					vsi->frm_bufs[ref_idx].buf.fb);
		}
	}

	*idx = new_idx;
	vsi->frm_bufs[new_idx].ref_cnt++;
}

static void vp9_free_all_sf_ref_fb(struct vdec_vp9_inst *inst)
{
	int i;
	struct vdec_vp9_vsi *vsi = inst->vsi;

	for (i = 0; i < ARRAY_SIZE(vsi->sf_ref_fb); i++) {
		if (vsi->sf_ref_fb[i].fb.base_y.va) {
			mtk_vcodec_mem_free(inst->ctx,
				&vsi->sf_ref_fb[i].fb.base_y);
			mtk_vcodec_mem_free(inst->ctx,
				&vsi->sf_ref_fb[i].fb.base_c);
			vsi->sf_ref_fb[i].used = 0;
		}
	}
}

/* For each sub-frame except the last one, the driver will dynamically
 * allocate reference buffer by calling vp9_get_sf_ref_fb()
 * The last sub-frame will use the original fb provided by the
 * vp9_dec_decode() interface
 */
static int vp9_get_sf_ref_fb(struct vdec_vp9_inst *inst)
{
	int idx;
	struct mtk_vcodec_mem *mem_basy_y;
	struct mtk_vcodec_mem *mem_basy_c;
	struct vdec_vp9_vsi *vsi = inst->vsi;

	for (idx = 0;
		idx < ARRAY_SIZE(vsi->sf_ref_fb);
		idx++) {
		if (vsi->sf_ref_fb[idx].fb.base_y.va &&
		    vsi->sf_ref_fb[idx].used == 0) {
			return idx;
		}
	}

	for (idx = 0;
		idx < ARRAY_SIZE(vsi->sf_ref_fb);
		idx++) {
		if (vsi->sf_ref_fb[idx].fb.base_y.va == NULL)
			break;
	}

	if (idx == ARRAY_SIZE(vsi->sf_ref_fb)) {
		mtk_vdec_err(inst->ctx, "List Full");
		return -1;
	}

	mem_basy_y = &vsi->sf_ref_fb[idx].fb.base_y;
	mem_basy_y->size = vsi->buf_sz_y_bs +
		vsi->buf_len_sz_y;

	if (mtk_vcodec_mem_alloc(inst->ctx, mem_basy_y)) {
		mtk_vdec_err(inst->ctx, "Cannot allocate sf_ref_buf y_buf");
		return -1;
	}

	mem_basy_c = &vsi->sf_ref_fb[idx].fb.base_c;
	mem_basy_c->size = vsi->buf_sz_c_bs +
		vsi->buf_len_sz_c;

	if (mtk_vcodec_mem_alloc(inst->ctx, mem_basy_c)) {
		mtk_vdec_err(inst->ctx, "Cannot allocate sf_ref_fb c_buf");
		return -1;
	}
	vsi->sf_ref_fb[idx].used = 0;

	return idx;
}

static bool vp9_alloc_work_buf(struct vdec_vp9_inst *inst)
{
	struct vdec_vp9_vsi *vsi = inst->vsi;
	int result;
	struct mtk_vcodec_mem *mem;

	unsigned int max_pic_w;
	unsigned int max_pic_h;


	if (!(inst->ctx->dev->dec_capability &
		VCODEC_CAPABILITY_4K_DISABLED)) {
		max_pic_w = VCODEC_DEC_4K_CODED_WIDTH;
		max_pic_h = VCODEC_DEC_4K_CODED_HEIGHT;
	} else {
		max_pic_w = MTK_VDEC_MAX_W;
		max_pic_h = MTK_VDEC_MAX_H;
	}

	if ((vsi->pic_w > max_pic_w) ||
		(vsi->pic_h > max_pic_h)) {
		mtk_vdec_err(inst->ctx, "Invalid w/h %d/%d", vsi->pic_w, vsi->pic_h);
		return false;
	}

	mtk_vdec_debug(inst->ctx, "BUF CHG(%d): w/h/sb_w/sb_h=%d/%d/%d/%d",
		       vsi->resolution_changed, vsi->pic_w,
		       vsi->pic_h, vsi->buf_w, vsi->buf_h);

	mem = &inst->mv_buf;
	if (mem->va)
		mtk_vcodec_mem_free(inst->ctx, mem);

	mem->size = ((vsi->buf_w / 64) *
		    (vsi->buf_h / 64) + 2) * 36 * 16;
	result = mtk_vcodec_mem_alloc(inst->ctx, mem);
	if (result) {
		mem->size = 0;
		mtk_vdec_err(inst->ctx, "Cannot allocate mv_buf");
		return false;
	}
	/* Set the va again */
	vsi->mv_buf.va = (unsigned long)mem->va;
	vsi->mv_buf.pa = (unsigned long)mem->dma_addr;
	vsi->mv_buf.sz = (unsigned int)mem->size;


	mem = &inst->seg_id_buf;
	if (mem->va)
		mtk_vcodec_mem_free(inst->ctx, mem);

	mem->size = VP9_SEG_ID_SZ;
	result = mtk_vcodec_mem_alloc(inst->ctx, mem);
	if (result) {
		mem->size = 0;
		mtk_vdec_err(inst->ctx, "Cannot allocate seg_id_buf");
		return false;
	}
	/* Set the va again */
	vsi->seg_id_buf.va = (unsigned long)mem->va;
	vsi->seg_id_buf.pa = (unsigned long)mem->dma_addr;
	vsi->seg_id_buf.sz = (unsigned int)mem->size;


	vp9_free_all_sf_ref_fb(inst);
	vsi->sf_next_ref_fb_idx = vp9_get_sf_ref_fb(inst);

	return true;
}

static bool vp9_add_to_fb_disp_list(struct vdec_vp9_inst *inst,
			     struct vdec_fb *fb)
{
	struct vdec_fb_node *node;

	if (!fb) {
		mtk_vdec_err(inst->ctx, "fb == NULL");
		return false;
	}

	node = list_first_entry_or_null(&inst->available_fb_node_list,
					struct vdec_fb_node, list);
	if (node) {
		node->fb = fb;
		list_move_tail(&node->list, &inst->fb_disp_list);
	} else {
		mtk_vdec_err(inst->ctx, "No available fb node");
		return false;
	}

	return true;
}

/* If any buffer updating is signaled it should be done here. */
static void vp9_swap_frm_bufs(struct vdec_vp9_inst *inst)
{
	struct vdec_vp9_vsi *vsi = inst->vsi;
	struct vp9_fb_info *frm_to_show;
	int ref_index = 0, mask;

	for (mask = vsi->refresh_frm_flags; mask; mask >>= 1) {
		if (mask & 1)
			vp9_ref_cnt_fb(inst, &vsi->ref_frm_map[ref_index],
				       vsi->new_fb_idx);
		++ref_index;
	}

	frm_to_show = &vsi->frm_bufs[vsi->new_fb_idx].buf;
	vsi->frm_bufs[vsi->new_fb_idx].ref_cnt--;

	if (frm_to_show->fb != inst->cur_fb) {
		/* This frame is show exist frame and no decode output
		 * copy frame data from frm_to_show to current CAPTURE
		 * buffer
		 */
		if ((frm_to_show->fb != NULL) &&
			(inst->cur_fb->base_y.size >=
			frm_to_show->fb->base_y.size) &&
			(inst->cur_fb->base_c.size >=
			frm_to_show->fb->base_c.size)) {
			memcpy((void *)inst->cur_fb->base_y.va,
				(void *)frm_to_show->fb->base_y.va,
				frm_to_show->fb->base_y.size);
			memcpy((void *)inst->cur_fb->base_c.va,
				(void *)frm_to_show->fb->base_c.va,
				frm_to_show->fb->base_c.size);
		} else {
			/* After resolution change case, current CAPTURE buffer
			 * may have less buffer size than frm_to_show buffer
			 * size
			 */
			if (frm_to_show->fb != NULL)
				mtk_vdec_err(inst->ctx,
					     "base_y.size=%zu, frm_to_show: base_y.size=%zu",
					     inst->cur_fb->base_y.size,
					     frm_to_show->fb->base_y.size);
		}
		if (!vp9_is_sf_ref_fb(inst, inst->cur_fb)) {
			if (vsi->show_frame & BIT(0))
				vp9_add_to_fb_disp_list(inst, inst->cur_fb);
		}
	} else {
		if (!vp9_is_sf_ref_fb(inst, inst->cur_fb)) {
			if (vsi->show_frame & BIT(0))
				vp9_add_to_fb_disp_list(inst, frm_to_show->fb);
		}
	}

	/* when ref_cnt ==0, move this fb to fb_free_list. v4l2 driver will
	 * clean fb_free_list
	 */
	if (vsi->frm_bufs[vsi->new_fb_idx].ref_cnt == 0) {
		if (!vp9_is_sf_ref_fb(
			inst, vsi->frm_bufs[vsi->new_fb_idx].buf.fb)) {
			struct vdec_fb *fb;

			fb = vp9_rm_from_fb_use_list(inst,
			vsi->frm_bufs[vsi->new_fb_idx].buf.fb->base_y.va);

			vp9_add_to_fb_free_list(inst, fb);
		} else {
			vp9_free_sf_ref_fb(
				vsi->frm_bufs[vsi->new_fb_idx].buf.fb);
		}
	}

	/* if this super frame and it is not last sub-frame, get next fb for
	 * sub-frame decode
	 */
	if (vsi->sf_frm_cnt > 0 && vsi->sf_frm_idx != vsi->sf_frm_cnt)
		vsi->sf_next_ref_fb_idx = vp9_get_sf_ref_fb(inst);
}

static bool vp9_wait_dec_end(struct vdec_vp9_inst *inst)
{
	struct mtk_vcodec_dec_ctx *ctx = inst->ctx;

	mtk_vcodec_wait_for_done_ctx(inst->ctx,
			MTK_INST_IRQ_RECEIVED,
			WAIT_INTR_TIMEOUT_MS, 0);

	if (ctx->irq_status & MTK_VDEC_IRQ_STATUS_DEC_SUCCESS)
		return true;
	else
		return false;
}

static struct vdec_vp9_inst *vp9_alloc_inst(struct mtk_vcodec_dec_ctx *ctx)
{
	int result;
	struct mtk_vcodec_mem mem;
	struct vdec_vp9_inst *inst;

	memset(&mem, 0, sizeof(mem));
	mem.size = sizeof(struct vdec_vp9_inst);
	result = mtk_vcodec_mem_alloc(ctx, &mem);
	if (result)
		return NULL;

	inst = mem.va;
	inst->mem = mem;

	return inst;
}

static void vp9_free_inst(struct vdec_vp9_inst *inst)
{
	struct mtk_vcodec_mem mem;

	mem = inst->mem;
	if (mem.va)
		mtk_vcodec_mem_free(inst->ctx, &mem);
}

static bool vp9_decode_end_proc(struct vdec_vp9_inst *inst)
{
	struct vdec_vp9_vsi *vsi = inst->vsi;
	bool ret = false;

	if (!vsi->show_existing_frame) {
		ret = vp9_wait_dec_end(inst);
		if (!ret) {
			mtk_vdec_err(inst->ctx, "Decode failed, Decode Timeout @[%d]",
				     vsi->frm_num);
			return false;
		}

		if (vpu_dec_end(&inst->vpu)) {
			mtk_vdec_err(inst->ctx, "vp9_dec_vpu_end failed");
			return false;
		}
		mtk_vdec_debug(inst->ctx, "Decode Ok @%d (%d/%d)", vsi->frm_num,
			       vsi->pic_w, vsi->pic_h);
	} else {
		mtk_vdec_debug(inst->ctx, "Decode Ok @%d (show_existing_frame)", vsi->frm_num);
	}

	vp9_swap_frm_bufs(inst);
	vsi->frm_num++;
	return true;
}

static bool vp9_is_last_sub_frm(struct vdec_vp9_inst *inst)
{
	struct vdec_vp9_vsi *vsi = inst->vsi;

	if (vsi->sf_frm_cnt <= 0 || vsi->sf_frm_idx == vsi->sf_frm_cnt)
		return true;

	return false;
}

static struct vdec_fb *vp9_rm_from_fb_disp_list(struct vdec_vp9_inst *inst)
{
	struct vdec_fb_node *node;
	struct vdec_fb *fb = NULL;

	node = list_first_entry_or_null(&inst->fb_disp_list,
					struct vdec_fb_node, list);
	if (node) {
		fb = (struct vdec_fb *)node->fb;
		fb->status |= FB_ST_DISPLAY;
		list_move_tail(&node->list, &inst->available_fb_node_list);
		mtk_vdec_debug(inst->ctx, "[FB] get disp fb %p st=%d", node->fb, fb->status);
	} else
		mtk_vdec_debug(inst->ctx, "[FB] there is no disp fb");

	return fb;
}

static bool vp9_add_to_fb_use_list(struct vdec_vp9_inst *inst,
			    struct vdec_fb *fb)
{
	struct vdec_fb_node *node;

	if (!fb) {
		mtk_vdec_debug(inst->ctx, "fb == NULL");
		return false;
	}

	node = list_first_entry_or_null(&inst->available_fb_node_list,
					struct vdec_fb_node, list);
	if (node) {
		node->fb = fb;
		list_move_tail(&node->list, &inst->fb_use_list);
	} else {
		mtk_vdec_err(inst->ctx, "No free fb node");
		return false;
	}
	return true;
}

static void vp9_reset(struct vdec_vp9_inst *inst)
{
	struct vdec_fb_node *node, *tmp;

	list_for_each_entry_safe(node, tmp, &inst->fb_use_list, list)
		list_move_tail(&node->list, &inst->fb_free_list);

	vp9_free_all_sf_ref_fb(inst);
	inst->vsi->sf_next_ref_fb_idx = vp9_get_sf_ref_fb(inst);

	if (vpu_dec_reset(&inst->vpu))
		mtk_vdec_err(inst->ctx, "vp9_dec_vpu_reset failed");

	/* Set the va again, since vpu_dec_reset will clear mv_buf in vpu */
	inst->vsi->mv_buf.va = (unsigned long)inst->mv_buf.va;
	inst->vsi->mv_buf.pa = (unsigned long)inst->mv_buf.dma_addr;
	inst->vsi->mv_buf.sz = (unsigned long)inst->mv_buf.size;

	/* Set the va again, since vpu_dec_reset will clear seg_id_buf in vpu */
	inst->vsi->seg_id_buf.va = (unsigned long)inst->seg_id_buf.va;
	inst->vsi->seg_id_buf.pa = (unsigned long)inst->seg_id_buf.dma_addr;
	inst->vsi->seg_id_buf.sz = (unsigned long)inst->seg_id_buf.size;

}

static void init_all_fb_lists(struct vdec_vp9_inst *inst)
{
	int i;

	INIT_LIST_HEAD(&inst->available_fb_node_list);
	INIT_LIST_HEAD(&inst->fb_use_list);
	INIT_LIST_HEAD(&inst->fb_free_list);
	INIT_LIST_HEAD(&inst->fb_disp_list);

	for (i = 0; i < ARRAY_SIZE(inst->dec_fb); i++) {
		INIT_LIST_HEAD(&inst->dec_fb[i].list);
		inst->dec_fb[i].fb = NULL;
		list_add_tail(&inst->dec_fb[i].list,
			      &inst->available_fb_node_list);
	}
}

static void get_pic_info(struct vdec_vp9_inst *inst, struct vdec_pic_info *pic)
{
	pic->fb_sz[0] = inst->vsi->buf_sz_y_bs + inst->vsi->buf_len_sz_y;
	pic->fb_sz[1] = inst->vsi->buf_sz_c_bs + inst->vsi->buf_len_sz_c;

	pic->pic_w = inst->vsi->pic_w;
	pic->pic_h = inst->vsi->pic_h;
	pic->buf_w = inst->vsi->buf_w;
	pic->buf_h = inst->vsi->buf_h;

	mtk_vdec_debug(inst->ctx, "pic(%d, %d), buf(%d, %d)",
		       pic->pic_w, pic->pic_h, pic->buf_w, pic->buf_h);
	mtk_vdec_debug(inst->ctx, "fb size: Y(%d), C(%d)", pic->fb_sz[0], pic->fb_sz[1]);
}

static void get_disp_fb(struct vdec_vp9_inst *inst, struct vdec_fb **out_fb)
{

	*out_fb = vp9_rm_from_fb_disp_list(inst);
	if (*out_fb)
		(*out_fb)->status |= FB_ST_DISPLAY;
}

static void get_free_fb(struct vdec_vp9_inst *inst, struct vdec_fb **out_fb)
{
	struct vdec_fb_node *node;
	struct vdec_fb *fb = NULL;

	node = list_first_entry_or_null(&inst->fb_free_list,
					struct vdec_fb_node, list);
	if (node) {
		list_move_tail(&node->list, &inst->available_fb_node_list);
		fb = (struct vdec_fb *)node->fb;
		fb->status |= FB_ST_FREE;
		mtk_vdec_debug(inst->ctx, "[FB] get free fb %p st=%d", node->fb, fb->status);
	} else {
		mtk_vdec_debug(inst->ctx, "[FB] there is no free fb");
	}

	*out_fb = fb;
}

static int validate_vsi_array_indexes(struct vdec_vp9_inst *inst,
		struct vdec_vp9_vsi *vsi) {
	if (vsi->sf_frm_idx > VP9_MAX_SUPER_FRAMES_NUM) {
		mtk_vdec_err(inst->ctx, "Invalid vsi->sf_frm_idx=%u.", vsi->sf_frm_idx);
		return -EIO;
	}
	if (vsi->frm_to_show_idx >= VP9_MAX_FRM_BUF_NUM) {
		mtk_vdec_err(inst->ctx, "Invalid vsi->frm_to_show_idx=%u.", vsi->frm_to_show_idx);
		return -EIO;
	}
	if (vsi->new_fb_idx >= VP9_MAX_FRM_BUF_NUM) {
		mtk_vdec_err(inst->ctx, "Invalid vsi->new_fb_idx=%u.", vsi->new_fb_idx);
		return -EIO;
	}
	return 0;
}

static void vdec_vp9_deinit(void *h_vdec)
{
	struct vdec_vp9_inst *inst = (struct vdec_vp9_inst *)h_vdec;
	struct mtk_vcodec_mem *mem;
	int ret = 0;

	ret = vpu_dec_deinit(&inst->vpu);
	if (ret)
		mtk_vdec_err(inst->ctx, "vpu_dec_deinit failed");

	mem = &inst->mv_buf;
	if (mem->va)
		mtk_vcodec_mem_free(inst->ctx, mem);

	mem = &inst->seg_id_buf;
	if (mem->va)
		mtk_vcodec_mem_free(inst->ctx, mem);

	vp9_free_all_sf_ref_fb(inst);
	vp9_free_inst(inst);
}

static int vdec_vp9_init(struct mtk_vcodec_dec_ctx *ctx)
{
	struct vdec_vp9_inst *inst;

	inst = vp9_alloc_inst(ctx);
	if (!inst)
		return -ENOMEM;

	inst->total_frm_cnt = 0;
	inst->ctx = ctx;

	inst->vpu.id = IPI_VDEC_VP9;
	inst->vpu.ctx = ctx;

	if (vpu_dec_init(&inst->vpu)) {
		mtk_vdec_err(inst->ctx, "vp9_dec_vpu_init failed");
		goto err_deinit_inst;
	}

	inst->vsi = (struct vdec_vp9_vsi *)inst->vpu.vsi;

	inst->vsi->show_frame |= BIT(3);

	init_all_fb_lists(inst);

	ctx->drv_handle = inst;
	return 0;

err_deinit_inst:
	vp9_free_inst(inst);

	return -EINVAL;
}

static int vdec_vp9_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
			   struct vdec_fb *fb, bool *res_chg)
{
	int ret = 0;
	struct vdec_vp9_inst *inst = (struct vdec_vp9_inst *)h_vdec;
	struct vdec_vp9_vsi *vsi = inst->vsi;
	u32 data[3];
	int i;

	*res_chg = false;

	if ((bs == NULL) && (fb == NULL)) {
		mtk_vdec_debug(inst->ctx, "[EOS]");
		vp9_reset(inst);
		return ret;
	}

	if (bs == NULL) {
		mtk_vdec_err(inst->ctx, "bs == NULL");
		return -EINVAL;
	}

	mtk_vdec_debug(inst->ctx, "Input BS Size = %zu", bs->size);

	while (1) {
		struct vdec_fb *cur_fb = NULL;

		data[0] = *((unsigned int *)bs->va);
		data[1] = *((unsigned int *)(bs->va + 4));
		data[2] = *((unsigned int *)(bs->va + 8));

		vsi->bs = *bs;

		if (fb)
			vsi->fb = *fb;

		if (!vsi->sf_init) {
			unsigned int sf_bs_sz;
			unsigned int sf_bs_off;
			unsigned char *sf_bs_src;
			unsigned char *sf_bs_dst;

			sf_bs_sz = bs->size > VP9_SUPER_FRAME_BS_SZ ?
					VP9_SUPER_FRAME_BS_SZ : bs->size;
			sf_bs_off = VP9_SUPER_FRAME_BS_SZ - sf_bs_sz;
			sf_bs_src = bs->va + bs->size - sf_bs_sz;
			sf_bs_dst = vsi->sf_bs_buf + sf_bs_off;
			memcpy(sf_bs_dst, sf_bs_src, sf_bs_sz);
		} else {
			if ((vsi->sf_frm_cnt > 0) &&
				(vsi->sf_frm_idx < vsi->sf_frm_cnt)) {
				unsigned int idx = vsi->sf_frm_idx;

				memcpy((void *)bs->va,
					(void *)(bs->va +
					vsi->sf_frm_offset[idx]),
					vsi->sf_frm_sz[idx]);
			}
		}

		if (!(vsi->show_frame & BIT(4)))
			memset(inst->seg_id_buf.va, 0, inst->seg_id_buf.size);

		ret = vpu_dec_start(&inst->vpu, data, 3);
		if (ret) {
			mtk_vdec_err(inst->ctx, "vpu_dec_start failed");
			goto DECODE_ERROR;
		}

		if (vsi->show_frame & BIT(1)) {
			memset(inst->seg_id_buf.va, 0, inst->seg_id_buf.size);

			if (vsi->show_frame & BIT(2)) {
				ret = vpu_dec_start(&inst->vpu, NULL, 0);
				if (ret) {
					mtk_vdec_err(inst->ctx, "vpu trig decoder failed");
					goto DECODE_ERROR;
				}
			}
		}

		ret = validate_vsi_array_indexes(inst, vsi);
		if (ret) {
			mtk_vdec_err(inst->ctx, "Invalid values from VPU.");
			goto DECODE_ERROR;
		}

		if (vsi->resolution_changed) {
			if (!vp9_alloc_work_buf(inst)) {
				ret = -EIO;
				goto DECODE_ERROR;
			}
		}

		if (vsi->sf_frm_cnt > 0) {
			cur_fb = &vsi->sf_ref_fb[vsi->sf_next_ref_fb_idx].fb;

			if (vsi->sf_frm_idx < vsi->sf_frm_cnt)
				inst->cur_fb = cur_fb;
			else
				inst->cur_fb = fb;
		} else {
			inst->cur_fb = fb;
		}

		vsi->frm_bufs[vsi->new_fb_idx].buf.fb = inst->cur_fb;
		if (!vp9_is_sf_ref_fb(inst, inst->cur_fb))
			vp9_add_to_fb_use_list(inst, inst->cur_fb);

		mtk_vdec_debug(inst->ctx, "[#pic %d]", vsi->frm_num);

		if (vsi->show_existing_frame)
			mtk_vdec_debug(inst->ctx,
				       "drv->new_fb_idx=%d, drv->frm_to_show_idx=%d",
				       vsi->new_fb_idx, vsi->frm_to_show_idx);

		if (vsi->show_existing_frame && (vsi->frm_to_show_idx <
					VP9_MAX_FRM_BUF_NUM)) {
			mtk_vdec_debug(inst->ctx,
				       "Skip Decode drv->new_fb_idx=%d, drv->frm_to_show_idx=%d",
				       vsi->new_fb_idx, vsi->frm_to_show_idx);

			vp9_ref_cnt_fb(inst, &vsi->new_fb_idx,
					vsi->frm_to_show_idx);
		}

		/* VPU assign the buffer pointer in its address space,
		 * reassign here
		 */
		for (i = 0; i < ARRAY_SIZE(vsi->frm_refs); i++) {
			unsigned int idx = vsi->frm_refs[i].idx;

			vsi->frm_refs[i].buf = &vsi->frm_bufs[idx].buf;
		}

		if (vsi->resolution_changed) {
			*res_chg = true;
			mtk_vdec_debug(inst->ctx, "VDEC_ST_RESOLUTION_CHANGED");

			ret = 0;
			goto DECODE_ERROR;
		}

		if (!vp9_decode_end_proc(inst)) {
			mtk_vdec_err(inst->ctx, "vp9_decode_end_proc");
			ret = -EINVAL;
			goto DECODE_ERROR;
		}

		if (vp9_is_last_sub_frm(inst))
			break;

	}
	inst->total_frm_cnt++;

DECODE_ERROR:
	if (ret < 0)
		vp9_add_to_fb_free_list(inst, fb);

	return ret;
}

static void get_crop_info(struct vdec_vp9_inst *inst, struct v4l2_rect *cr)
{
	cr->left = 0;
	cr->top = 0;
	cr->width = inst->vsi->pic_w;
	cr->height = inst->vsi->pic_h;
	mtk_vdec_debug(inst->ctx, "get crop info l=%d, t=%d, w=%d, h=%d\n",
		       cr->left, cr->top, cr->width, cr->height);
}

static int vdec_vp9_get_param(void *h_vdec, enum vdec_get_param_type type,
			      void *out)
{
	struct vdec_vp9_inst *inst = (struct vdec_vp9_inst *)h_vdec;
	int ret = 0;

	switch (type) {
	case GET_PARAM_DISP_FRAME_BUFFER:
		get_disp_fb(inst, out);
		break;
	case GET_PARAM_FREE_FRAME_BUFFER:
		get_free_fb(inst, out);
		break;
	case GET_PARAM_PIC_INFO:
		get_pic_info(inst, out);
		break;
	case GET_PARAM_DPB_SIZE:
		*((unsigned int *)out) = MAX_VP9_DPB_SIZE;
		break;
	case GET_PARAM_CROP_INFO:
		get_crop_info(inst, out);
		break;
	default:
		mtk_vdec_err(inst->ctx, "not supported param type %d", type);
		ret = -EINVAL;
		break;
	}

	return ret;
}

const struct vdec_common_if vdec_vp9_if = {
	.init		= vdec_vp9_init,
	.decode		= vdec_vp9_decode,
	.get_param	= vdec_vp9_get_param,
	.deinit		= vdec_vp9_deinit,
};