drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Hantro VPU HEVC codec driver
   4  *
   5  * Copyright (C) 2020 Safran Passenger Innovations LLC
   6  */
   7
   8 #include "hantro_hw.h"
   9 #include "hantro_g2_regs.h"
  10
  11 #define G2_ALIGN        16
  12
  13 static size_t hantro_hevc_chroma_offset(struct hantro_ctx *ctx)
  14 {
  15         return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
  16 }
  17
  18 static size_t hantro_hevc_motion_vectors_offset(struct hantro_ctx *ctx)
  19 {
  20         size_t cr_offset = hantro_hevc_chroma_offset(ctx);
  21
  22         return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
  23 }
  24
  25 static void prepare_tile_info_buffer(struct hantro_ctx *ctx)
  26 {
  27         struct hantro_dev *vpu = ctx->dev;
  28         const struct hantro_hevc_dec_ctrls *ctrls = &ctx->hevc_dec.ctrls;
  29         const struct v4l2_ctrl_hevc_pps *pps = ctrls->pps;
  30         const struct v4l2_ctrl_hevc_sps *sps = ctrls->sps;
  31         u16 *p = (u16 *)((u8 *)ctx->hevc_dec.tile_sizes.cpu);
  32         unsigned int num_tile_rows = pps->num_tile_rows_minus1 + 1;
  33         unsigned int num_tile_cols = pps->num_tile_columns_minus1 + 1;
  34         unsigned int pic_width_in_ctbs, pic_height_in_ctbs;
  35         unsigned int max_log2_ctb_size, ctb_size;
  36         bool tiles_enabled, uniform_spacing;
  37         u32 no_chroma = 0;
  38
  39         tiles_enabled = !!(pps->flags & V4L2_HEVC_PPS_FLAG_TILES_ENABLED);
  40         uniform_spacing = !!(pps->flags & V4L2_HEVC_PPS_FLAG_UNIFORM_SPACING);
  41
  42         hantro_reg_write(vpu, &g2_tile_e, tiles_enabled);
  43
  44         max_log2_ctb_size = sps->log2_min_luma_coding_block_size_minus3 + 3 +
  45                             sps->log2_diff_max_min_luma_coding_block_size;
  46         pic_width_in_ctbs = (sps->pic_width_in_luma_samples +
  47                             (1 << max_log2_ctb_size) - 1) >> max_log2_ctb_size;
  48         pic_height_in_ctbs = (sps->pic_height_in_luma_samples + (1 << max_log2_ctb_size) - 1)
  49                              >> max_log2_ctb_size;
  50         ctb_size = 1 << max_log2_ctb_size;
  51
  52         vpu_debug(1, "Preparing tile sizes buffer for %dx%d CTBs (CTB size %d)\n",
  53                   pic_width_in_ctbs, pic_height_in_ctbs, ctb_size);
  54
  55         if (tiles_enabled) {
  56                 unsigned int i, j, h;
  57
  58                 vpu_debug(1, "Tiles enabled! %dx%d\n", num_tile_cols, num_tile_rows);
  59
  60                 hantro_reg_write(vpu, &g2_num_tile_rows, num_tile_rows);
  61                 hantro_reg_write(vpu, &g2_num_tile_cols, num_tile_cols);
  62
  63                 /* write width + height for each tile in pic */
  64                 if (!uniform_spacing) {
  65                         u32 tmp_w = 0, tmp_h = 0;
  66
  67                         for (i = 0; i < num_tile_rows; i++) {
  68                                 if (i == num_tile_rows - 1)
  69                                         h = pic_height_in_ctbs - tmp_h;
  70                                 else
  71                                         h = pps->row_height_minus1[i] + 1;
  72                                 tmp_h += h;
  73                                 if (i == 0 && h == 1 && ctb_size == 16)
  74                                         no_chroma = 1;
  75                                 for (j = 0, tmp_w = 0; j < num_tile_cols - 1; j++) {
  76                                         tmp_w += pps->column_width_minus1[j] + 1;
  77                                         *p++ = pps->column_width_minus1[j] + 1;
  78                                         *p++ = h;
  79                                         if (i == 0 && h == 1 && ctb_size == 16)
  80                                                 no_chroma = 1;
  81                                 }
  82                                 /* last column */
  83                                 *p++ = pic_width_in_ctbs - tmp_w;
  84                                 *p++ = h;
  85                         }
  86                 } else { /* uniform spacing */
  87                         u32 tmp, prev_h, prev_w;
  88
  89                         for (i = 0, prev_h = 0; i < num_tile_rows; i++) {
  90                                 tmp = (i + 1) * pic_height_in_ctbs / num_tile_rows;
  91                                 h = tmp - prev_h;
  92                                 prev_h = tmp;
  93                                 if (i == 0 && h == 1 && ctb_size == 16)
  94                                         no_chroma = 1;
  95                                 for (j = 0, prev_w = 0; j < num_tile_cols; j++) {
  96                                         tmp = (j + 1) * pic_width_in_ctbs / num_tile_cols;
  97                                         *p++ = tmp - prev_w;
  98                                         *p++ = h;
  99                                         if (j == 0 &&
 100                                             (pps->column_width_minus1[0] + 1) == 1 &&
 101                                             ctb_size == 16)
 102                                                 no_chroma = 1;
 103                                         prev_w = tmp;
 104                                 }
 105                         }
 106                 }
 107         } else {
 108                 hantro_reg_write(vpu, &g2_num_tile_rows, 1);
 109                 hantro_reg_write(vpu, &g2_num_tile_cols, 1);
 110
 111                 /* There's one tile, with dimensions equal to pic size. */
 112                 p[0] = pic_width_in_ctbs;
 113                 p[1] = pic_height_in_ctbs;
 114         }
 115
 116         if (no_chroma)
 117                 vpu_debug(1, "%s: no chroma!\n", __func__);
 118 }
 119
 120 static int compute_header_skip_length(struct hantro_ctx *ctx)
 121 {
 122         const struct hantro_hevc_dec_ctrls *ctrls = &ctx->hevc_dec.ctrls;
 123         const struct v4l2_ctrl_hevc_decode_params *decode_params = ctrls->decode_params;
 124         const struct v4l2_ctrl_hevc_sps *sps = ctrls->sps;
 125         const struct v4l2_ctrl_hevc_pps *pps = ctrls->pps;
 126         int skip = 0;
 127
 128         if (pps->flags & V4L2_HEVC_PPS_FLAG_OUTPUT_FLAG_PRESENT)
 129                 /* size of pic_output_flag */
 130                 skip++;
 131
 132         if (sps->flags & V4L2_HEVC_SPS_FLAG_SEPARATE_COLOUR_PLANE)
 133                 /* size of pic_order_cnt_lsb */
 134                 skip += 2;
 135
 136         if (!(decode_params->flags & V4L2_HEVC_DECODE_PARAM_FLAG_IDR_PIC)) {
 137                 /* size of pic_order_cnt_lsb */
 138                 skip += sps->log2_max_pic_order_cnt_lsb_minus4 + 4;
 139
 140                 /* size of short_term_ref_pic_set_sps_flag */
 141                 skip++;
 142
 143                 if (decode_params->short_term_ref_pic_set_size)
 144                         /* size of st_ref_pic_set( num_short_term_ref_pic_sets ) */
 145                         skip += decode_params->short_term_ref_pic_set_size;
 146                 else if (sps->num_short_term_ref_pic_sets > 1)
 147                         skip += fls(sps->num_short_term_ref_pic_sets - 1);
 148
 149                 skip += decode_params->long_term_ref_pic_set_size;
 150         }
 151
 152         return skip;
 153 }
 154
 155 static void set_params(struct hantro_ctx *ctx)
 156 {
 157         const struct hantro_hevc_dec_ctrls *ctrls = &ctx->hevc_dec.ctrls;
 158         const struct v4l2_ctrl_hevc_sps *sps = ctrls->sps;
 159         const struct v4l2_ctrl_hevc_pps *pps = ctrls->pps;
 160         const struct v4l2_ctrl_hevc_decode_params *decode_params = ctrls->decode_params;
 161         struct hantro_dev *vpu = ctx->dev;
 162         u32 min_log2_cb_size, max_log2_ctb_size, min_cb_size, max_ctb_size;
 163         u32 pic_width_in_min_cbs, pic_height_in_min_cbs;
 164         u32 pic_width_aligned, pic_height_aligned;
 165         u32 partial_ctb_x, partial_ctb_y;
 166
 167         hantro_reg_write(vpu, &g2_bit_depth_y_minus8, sps->bit_depth_luma_minus8);
 168         hantro_reg_write(vpu, &g2_bit_depth_c_minus8, sps->bit_depth_chroma_minus8);
 169
 170         hantro_reg_write(vpu, &g2_hdr_skip_length, compute_header_skip_length(ctx));
 171
 172         min_log2_cb_size = sps->log2_min_luma_coding_block_size_minus3 + 3;
 173         max_log2_ctb_size = min_log2_cb_size + sps->log2_diff_max_min_luma_coding_block_size;
 174
 175         hantro_reg_write(vpu, &g2_min_cb_size, min_log2_cb_size);
 176         hantro_reg_write(vpu, &g2_max_cb_size, max_log2_ctb_size);
 177
 178         min_cb_size = 1 << min_log2_cb_size;
 179         max_ctb_size = 1 << max_log2_ctb_size;
 180
 181         pic_width_in_min_cbs = sps->pic_width_in_luma_samples / min_cb_size;
 182         pic_height_in_min_cbs = sps->pic_height_in_luma_samples / min_cb_size;
 183         pic_width_aligned = ALIGN(sps->pic_width_in_luma_samples, max_ctb_size);
 184         pic_height_aligned = ALIGN(sps->pic_height_in_luma_samples, max_ctb_size);
 185
 186         partial_ctb_x = !!(sps->pic_width_in_luma_samples != pic_width_aligned);
 187         partial_ctb_y = !!(sps->pic_height_in_luma_samples != pic_height_aligned);
 188
 189         hantro_reg_write(vpu, &g2_partial_ctb_x, partial_ctb_x);
 190         hantro_reg_write(vpu, &g2_partial_ctb_y, partial_ctb_y);
 191
 192         hantro_reg_write(vpu, &g2_pic_width_in_cbs, pic_width_in_min_cbs);
 193         hantro_reg_write(vpu, &g2_pic_height_in_cbs, pic_height_in_min_cbs);
 194
 195         hantro_reg_write(vpu, &g2_pic_width_4x4,
 196                          (pic_width_in_min_cbs * min_cb_size) / 4);
 197         hantro_reg_write(vpu, &g2_pic_height_4x4,
 198                          (pic_height_in_min_cbs * min_cb_size) / 4);
 199
 200         hantro_reg_write(vpu, &hevc_max_inter_hierdepth,
 201                          sps->max_transform_hierarchy_depth_inter);
 202         hantro_reg_write(vpu, &hevc_max_intra_hierdepth,
 203                          sps->max_transform_hierarchy_depth_intra);
 204         hantro_reg_write(vpu, &hevc_min_trb_size,
 205                          sps->log2_min_luma_transform_block_size_minus2 + 2);
 206         hantro_reg_write(vpu, &hevc_max_trb_size,
 207                          sps->log2_min_luma_transform_block_size_minus2 + 2 +
 208                          sps->log2_diff_max_min_luma_transform_block_size);
 209
 210         hantro_reg_write(vpu, &g2_tempor_mvp_e,
 211                          !!(sps->flags & V4L2_HEVC_SPS_FLAG_SPS_TEMPORAL_MVP_ENABLED) &&
 212                          !(decode_params->flags & V4L2_HEVC_DECODE_PARAM_FLAG_IDR_PIC));
 213         hantro_reg_write(vpu, &g2_strong_smooth_e,
 214                          !!(sps->flags & V4L2_HEVC_SPS_FLAG_STRONG_INTRA_SMOOTHING_ENABLED));
 215         hantro_reg_write(vpu, &g2_asym_pred_e,
 216                          !!(sps->flags & V4L2_HEVC_SPS_FLAG_AMP_ENABLED));
 217         hantro_reg_write(vpu, &g2_sao_e,
 218                          !!(sps->flags & V4L2_HEVC_SPS_FLAG_SAMPLE_ADAPTIVE_OFFSET));
 219         hantro_reg_write(vpu, &g2_sign_data_hide,
 220                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_SIGN_DATA_HIDING_ENABLED));
 221
 222         if (pps->flags & V4L2_HEVC_PPS_FLAG_CU_QP_DELTA_ENABLED) {
 223                 hantro_reg_write(vpu, &g2_cu_qpd_e, 1);
 224                 hantro_reg_write(vpu, &g2_max_cu_qpd_depth, pps->diff_cu_qp_delta_depth);
 225         } else {
 226                 hantro_reg_write(vpu, &g2_cu_qpd_e, 0);
 227                 hantro_reg_write(vpu, &g2_max_cu_qpd_depth, 0);
 228         }
 229
 230         hantro_reg_write(vpu, &g2_cb_qp_offset, pps->pps_cb_qp_offset);
 231         hantro_reg_write(vpu, &g2_cr_qp_offset, pps->pps_cr_qp_offset);
 232
 233         hantro_reg_write(vpu, &g2_filt_offset_beta, pps->pps_beta_offset_div2);
 234         hantro_reg_write(vpu, &g2_filt_offset_tc, pps->pps_tc_offset_div2);
 235         hantro_reg_write(vpu, &g2_slice_hdr_ext_e,
 236                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_SLICE_SEGMENT_HEADER_EXTENSION_PRESENT));
 237         hantro_reg_write(vpu, &g2_slice_hdr_ext_bits, pps->num_extra_slice_header_bits);
 238         hantro_reg_write(vpu, &g2_slice_chqp_present,
 239                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_PPS_SLICE_CHROMA_QP_OFFSETS_PRESENT));
 240         hantro_reg_write(vpu, &g2_weight_bipr_idc,
 241                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_WEIGHTED_BIPRED));
 242         hantro_reg_write(vpu, &g2_transq_bypass,
 243                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_TRANSQUANT_BYPASS_ENABLED));
 244         hantro_reg_write(vpu, &g2_list_mod_e,
 245                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_LISTS_MODIFICATION_PRESENT));
 246         hantro_reg_write(vpu, &g2_entropy_sync_e,
 247                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED));
 248         hantro_reg_write(vpu, &g2_cabac_init_present,
 249                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_CABAC_INIT_PRESENT));
 250         hantro_reg_write(vpu, &g2_idr_pic_e,
 251                          !!(decode_params->flags & V4L2_HEVC_DECODE_PARAM_FLAG_IRAP_PIC));
 252         hantro_reg_write(vpu, &hevc_parallel_merge,
 253                          pps->log2_parallel_merge_level_minus2 + 2);
 254         hantro_reg_write(vpu, &g2_pcm_filt_d,
 255                          !!(sps->flags & V4L2_HEVC_SPS_FLAG_PCM_LOOP_FILTER_DISABLED));
 256         hantro_reg_write(vpu, &g2_pcm_e,
 257                          !!(sps->flags & V4L2_HEVC_SPS_FLAG_PCM_ENABLED));
 258         if (sps->flags & V4L2_HEVC_SPS_FLAG_PCM_ENABLED) {
 259                 hantro_reg_write(vpu, &g2_max_pcm_size,
 260                                  sps->log2_diff_max_min_pcm_luma_coding_block_size +
 261                                  sps->log2_min_pcm_luma_coding_block_size_minus3 + 3);
 262                 hantro_reg_write(vpu, &g2_min_pcm_size,
 263                                  sps->log2_min_pcm_luma_coding_block_size_minus3 + 3);
 264                 hantro_reg_write(vpu, &g2_bit_depth_pcm_y,
 265                                  sps->pcm_sample_bit_depth_luma_minus1 + 1);
 266                 hantro_reg_write(vpu, &g2_bit_depth_pcm_c,
 267                                  sps->pcm_sample_bit_depth_chroma_minus1 + 1);
 268         } else {
 269                 hantro_reg_write(vpu, &g2_max_pcm_size, 0);
 270                 hantro_reg_write(vpu, &g2_min_pcm_size, 0);
 271                 hantro_reg_write(vpu, &g2_bit_depth_pcm_y, 0);
 272                 hantro_reg_write(vpu, &g2_bit_depth_pcm_c, 0);
 273         }
 274
 275         hantro_reg_write(vpu, &g2_start_code_e, 1);
 276         hantro_reg_write(vpu, &g2_init_qp, pps->init_qp_minus26 + 26);
 277         hantro_reg_write(vpu, &g2_weight_pred_e,
 278                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_WEIGHTED_PRED));
 279         hantro_reg_write(vpu, &g2_cabac_init_present,
 280                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_CABAC_INIT_PRESENT));
 281         hantro_reg_write(vpu, &g2_const_intra_e,
 282                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_CONSTRAINED_INTRA_PRED));
 283         hantro_reg_write(vpu, &g2_transform_skip,
 284                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_TRANSFORM_SKIP_ENABLED));
 285         hantro_reg_write(vpu, &g2_out_filtering_dis,
 286                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_PPS_DISABLE_DEBLOCKING_FILTER));
 287         hantro_reg_write(vpu, &g2_filt_ctrl_pres,
 288                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT));
 289         hantro_reg_write(vpu, &g2_dependent_slice,
 290                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_DEPENDENT_SLICE_SEGMENT_ENABLED));
 291         hantro_reg_write(vpu, &g2_filter_override,
 292                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_DEBLOCKING_FILTER_OVERRIDE_ENABLED));
 293         hantro_reg_write(vpu, &g2_refidx0_active,
 294                          pps->num_ref_idx_l0_default_active_minus1 + 1);
 295         hantro_reg_write(vpu, &g2_refidx1_active,
 296                          pps->num_ref_idx_l1_default_active_minus1 + 1);
 297         hantro_reg_write(vpu, &g2_apf_threshold, 8);
 298 }
 299
 300 static void set_ref_pic_list(struct hantro_ctx *ctx)
 301 {
 302         const struct hantro_hevc_dec_ctrls *ctrls = &ctx->hevc_dec.ctrls;
 303         struct hantro_dev *vpu = ctx->dev;
 304         const struct v4l2_ctrl_hevc_decode_params *decode_params = ctrls->decode_params;
 305         u32 list0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX] = {};
 306         u32 list1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX] = {};
 307         static const struct hantro_reg ref_pic_regs0[] = {
 308                 hevc_rlist_f0,
 309                 hevc_rlist_f1,
 310                 hevc_rlist_f2,
 311                 hevc_rlist_f3,
 312                 hevc_rlist_f4,
 313                 hevc_rlist_f5,
 314                 hevc_rlist_f6,
 315                 hevc_rlist_f7,
 316                 hevc_rlist_f8,
 317                 hevc_rlist_f9,
 318                 hevc_rlist_f10,
 319                 hevc_rlist_f11,
 320                 hevc_rlist_f12,
 321                 hevc_rlist_f13,
 322                 hevc_rlist_f14,
 323                 hevc_rlist_f15,
 324         };
 325         static const struct hantro_reg ref_pic_regs1[] = {
 326                 hevc_rlist_b0,
 327                 hevc_rlist_b1,
 328                 hevc_rlist_b2,
 329                 hevc_rlist_b3,
 330                 hevc_rlist_b4,
 331                 hevc_rlist_b5,
 332                 hevc_rlist_b6,
 333                 hevc_rlist_b7,
 334                 hevc_rlist_b8,
 335                 hevc_rlist_b9,
 336                 hevc_rlist_b10,
 337                 hevc_rlist_b11,
 338                 hevc_rlist_b12,
 339                 hevc_rlist_b13,
 340                 hevc_rlist_b14,
 341                 hevc_rlist_b15,
 342         };
 343         unsigned int i, j;
 344
 345         /* List 0 contains: short term before, short term after and long term */
 346         j = 0;
 347         for (i = 0; i < decode_params->num_poc_st_curr_before && j < ARRAY_SIZE(list0); i++)
 348                 list0[j++] = decode_params->poc_st_curr_before[i];
 349         for (i = 0; i < decode_params->num_poc_st_curr_after && j < ARRAY_SIZE(list0); i++)
 350                 list0[j++] = decode_params->poc_st_curr_after[i];
 351         for (i = 0; i < decode_params->num_poc_lt_curr && j < ARRAY_SIZE(list0); i++)
 352                 list0[j++] = decode_params->poc_lt_curr[i];
 353
 354         /* Fill the list, copying over and over */
 355         i = 0;
 356         while (j < ARRAY_SIZE(list0))
 357                 list0[j++] = list0[i++];
 358
 359         j = 0;
 360         for (i = 0; i < decode_params->num_poc_st_curr_after && j < ARRAY_SIZE(list1); i++)
 361                 list1[j++] = decode_params->poc_st_curr_after[i];
 362         for (i = 0; i < decode_params->num_poc_st_curr_before && j < ARRAY_SIZE(list1); i++)
 363                 list1[j++] = decode_params->poc_st_curr_before[i];
 364         for (i = 0; i < decode_params->num_poc_lt_curr && j < ARRAY_SIZE(list1); i++)
 365                 list1[j++] = decode_params->poc_lt_curr[i];
 366
 367         i = 0;
 368         while (j < ARRAY_SIZE(list1))
 369                 list1[j++] = list1[i++];
 370
 371         for (i = 0; i < V4L2_HEVC_DPB_ENTRIES_NUM_MAX; i++) {
 372                 hantro_reg_write(vpu, &ref_pic_regs0[i], list0[i]);
 373                 hantro_reg_write(vpu, &ref_pic_regs1[i], list1[i]);
 374         }
 375 }
 376
 377 static int set_ref(struct hantro_ctx *ctx)
 378 {
 379         const struct hantro_hevc_dec_ctrls *ctrls = &ctx->hevc_dec.ctrls;
 380         const struct v4l2_ctrl_hevc_pps *pps = ctrls->pps;
 381         const struct v4l2_ctrl_hevc_decode_params *decode_params = ctrls->decode_params;
 382         const struct v4l2_hevc_dpb_entry *dpb = decode_params->dpb;
 383         dma_addr_t luma_addr, chroma_addr, mv_addr = 0;
 384         struct hantro_dev *vpu = ctx->dev;
 385         struct vb2_v4l2_buffer *vb2_dst;
 386         struct hantro_decoded_buffer *dst;
 387         size_t cr_offset = hantro_hevc_chroma_offset(ctx);
 388         size_t mv_offset = hantro_hevc_motion_vectors_offset(ctx);
 389         u32 max_ref_frames;
 390         u16 dpb_longterm_e;
 391         static const struct hantro_reg cur_poc[] = {
 392                 hevc_cur_poc_00,
 393                 hevc_cur_poc_01,
 394                 hevc_cur_poc_02,
 395                 hevc_cur_poc_03,
 396                 hevc_cur_poc_04,
 397                 hevc_cur_poc_05,
 398                 hevc_cur_poc_06,
 399                 hevc_cur_poc_07,
 400                 hevc_cur_poc_08,
 401                 hevc_cur_poc_09,
 402                 hevc_cur_poc_10,
 403                 hevc_cur_poc_11,
 404                 hevc_cur_poc_12,
 405                 hevc_cur_poc_13,
 406                 hevc_cur_poc_14,
 407                 hevc_cur_poc_15,
 408         };
 409         unsigned int i;
 410
 411         max_ref_frames = decode_params->num_poc_lt_curr +
 412                 decode_params->num_poc_st_curr_before +
 413                 decode_params->num_poc_st_curr_after;
 414         /*
 415          * Set max_ref_frames to non-zero to avoid HW hang when decoding
 416          * badly marked I-frames.
 417          */
 418         max_ref_frames = max_ref_frames ? max_ref_frames : 1;
 419         hantro_reg_write(vpu, &g2_num_ref_frames, max_ref_frames);
 420         hantro_reg_write(vpu, &g2_filter_over_slices,
 421                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_PPS_LOOP_FILTER_ACROSS_SLICES_ENABLED));
 422         hantro_reg_write(vpu, &g2_filter_over_tiles,
 423                          !!(pps->flags & V4L2_HEVC_PPS_FLAG_LOOP_FILTER_ACROSS_TILES_ENABLED));
 424
 425         /*
 426          * Write POC count diff from current pic.
 427          */
 428         for (i = 0; i < decode_params->num_active_dpb_entries && i < ARRAY_SIZE(cur_poc); i++) {
 429                 char poc_diff = decode_params->pic_order_cnt_val - dpb[i].pic_order_cnt_val;
 430
 431                 hantro_reg_write(vpu, &cur_poc[i], poc_diff);
 432         }
 433
 434         if (i < ARRAY_SIZE(cur_poc)) {
 435                 /*
 436                  * After the references, fill one entry pointing to itself,
 437                  * i.e. difference is zero.
 438                  */
 439                 hantro_reg_write(vpu, &cur_poc[i], 0);
 440                 i++;
 441         }
 442
 443         /* Fill the rest with the current picture */
 444         for (; i < ARRAY_SIZE(cur_poc); i++)
 445                 hantro_reg_write(vpu, &cur_poc[i], decode_params->pic_order_cnt_val);
 446
 447         set_ref_pic_list(ctx);
 448
 449         /* We will only keep the reference pictures that are still used */
 450         hantro_hevc_ref_init(ctx);
 451
 452         /* Set up addresses of DPB buffers */
 453         dpb_longterm_e = 0;
 454         for (i = 0; i < decode_params->num_active_dpb_entries &&
 455              i < (V4L2_HEVC_DPB_ENTRIES_NUM_MAX - 1); i++) {
 456                 luma_addr = hantro_hevc_get_ref_buf(ctx, dpb[i].pic_order_cnt_val);
 457                 if (!luma_addr)
 458                         return -ENOMEM;
 459
 460                 chroma_addr = luma_addr + cr_offset;
 461                 mv_addr = luma_addr + mv_offset;
 462
 463                 if (dpb[i].flags & V4L2_HEVC_DPB_ENTRY_LONG_TERM_REFERENCE)
 464                         dpb_longterm_e |= BIT(V4L2_HEVC_DPB_ENTRIES_NUM_MAX - 1 - i);
 465
 466                 hantro_write_addr(vpu, G2_REF_LUMA_ADDR(i), luma_addr);
 467                 hantro_write_addr(vpu, G2_REF_CHROMA_ADDR(i), chroma_addr);
 468                 hantro_write_addr(vpu, G2_REF_MV_ADDR(i), mv_addr);
 469         }
 470
 471         vb2_dst = hantro_get_dst_buf(ctx);
 472         dst = vb2_to_hantro_decoded_buf(&vb2_dst->vb2_buf);
 473         luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
 474         if (!luma_addr)
 475                 return -ENOMEM;
 476
 477         if (hantro_hevc_add_ref_buf(ctx, decode_params->pic_order_cnt_val, luma_addr))
 478                 return -EINVAL;
 479
 480         chroma_addr = luma_addr + cr_offset;
 481         mv_addr = luma_addr + mv_offset;
 482
 483         hantro_write_addr(vpu, G2_REF_LUMA_ADDR(i), luma_addr);
 484         hantro_write_addr(vpu, G2_REF_CHROMA_ADDR(i), chroma_addr);
 485         hantro_write_addr(vpu, G2_REF_MV_ADDR(i++), mv_addr);
 486
 487         hantro_write_addr(vpu, G2_OUT_LUMA_ADDR, luma_addr);
 488         hantro_write_addr(vpu, G2_OUT_CHROMA_ADDR, chroma_addr);
 489         hantro_write_addr(vpu, G2_OUT_MV_ADDR, mv_addr);
 490
 491         for (; i < V4L2_HEVC_DPB_ENTRIES_NUM_MAX; i++) {
 492                 hantro_write_addr(vpu, G2_REF_LUMA_ADDR(i), 0);
 493                 hantro_write_addr(vpu, G2_REF_CHROMA_ADDR(i), 0);
 494                 hantro_write_addr(vpu, G2_REF_MV_ADDR(i), 0);
 495         }
 496
 497         hantro_reg_write(vpu, &g2_refer_lterm_e, dpb_longterm_e);
 498
 499         return 0;
 500 }
 501
 502 static void set_buffers(struct hantro_ctx *ctx)
 503 {
 504         struct vb2_v4l2_buffer *src_buf;
 505         struct hantro_dev *vpu = ctx->dev;
 506         dma_addr_t src_dma;
 507         u32 src_len, src_buf_len;
 508
 509         src_buf = hantro_get_src_buf(ctx);
 510
 511         /* Source (stream) buffer. */
 512         src_dma = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
 513         src_len = vb2_get_plane_payload(&src_buf->vb2_buf, 0);
 514         src_buf_len = vb2_plane_size(&src_buf->vb2_buf, 0);
 515
 516         hantro_write_addr(vpu, G2_STREAM_ADDR, src_dma);
 517         hantro_reg_write(vpu, &g2_stream_len, src_len);
 518         hantro_reg_write(vpu, &g2_strm_buffer_len, src_buf_len);
 519         hantro_reg_write(vpu, &g2_strm_start_offset, 0);
 520         hantro_reg_write(vpu, &g2_write_mvs_e, 1);
 521
 522         hantro_write_addr(vpu, G2_TILE_SIZES_ADDR, ctx->hevc_dec.tile_sizes.dma);
 523         hantro_write_addr(vpu, G2_TILE_FILTER_ADDR, ctx->hevc_dec.tile_filter.dma);
 524         hantro_write_addr(vpu, G2_TILE_SAO_ADDR, ctx->hevc_dec.tile_sao.dma);
 525         hantro_write_addr(vpu, G2_TILE_BSD_ADDR, ctx->hevc_dec.tile_bsd.dma);
 526 }
 527
 528 static void prepare_scaling_list_buffer(struct hantro_ctx *ctx)
 529 {
 530         struct hantro_dev *vpu = ctx->dev;
 531         const struct hantro_hevc_dec_ctrls *ctrls = &ctx->hevc_dec.ctrls;
 532         const struct v4l2_ctrl_hevc_scaling_matrix *sc = ctrls->scaling;
 533         const struct v4l2_ctrl_hevc_sps *sps = ctrls->sps;
 534         u8 *p = ((u8 *)ctx->hevc_dec.scaling_lists.cpu);
 535         unsigned int scaling_list_enabled;
 536         unsigned int i, j, k;
 537
 538         scaling_list_enabled = !!(sps->flags & V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED);
 539         hantro_reg_write(vpu, &g2_scaling_list_e, scaling_list_enabled);
 540
 541         if (!scaling_list_enabled)
 542                 return;
 543
 544         for (i = 0; i < ARRAY_SIZE(sc->scaling_list_dc_coef_16x16); i++)
 545                 *p++ = sc->scaling_list_dc_coef_16x16[i];
 546
 547         for (i = 0; i < ARRAY_SIZE(sc->scaling_list_dc_coef_32x32); i++)
 548                 *p++ = sc->scaling_list_dc_coef_32x32[i];
 549
 550         /* 128-bit boundary */
 551         p += 8;
 552
 553         /* write scaling lists column by column */
 554
 555         for (i = 0; i < 6; i++)
 556                 for (j = 0; j < 4; j++)
 557                         for (k = 0; k < 4; k++)
 558                                 *p++ = sc->scaling_list_4x4[i][4 * k + j];
 559
 560         for (i = 0; i < 6; i++)
 561                 for (j = 0; j < 8; j++)
 562                         for (k = 0; k < 8; k++)
 563                                 *p++ = sc->scaling_list_8x8[i][8 * k + j];
 564
 565         for (i = 0; i < 6; i++)
 566                 for (j = 0; j < 8; j++)
 567                         for (k = 0; k < 8; k++)
 568                                 *p++ = sc->scaling_list_16x16[i][8 * k + j];
 569
 570         for (i = 0; i < 2; i++)
 571                 for (j = 0; j < 8; j++)
 572                         for (k = 0; k < 8; k++)
 573                                 *p++ = sc->scaling_list_32x32[i][8 * k + j];
 574
 575         hantro_write_addr(vpu, G2_HEVC_SCALING_LIST_ADDR, ctx->hevc_dec.scaling_lists.dma);
 576 }
 577
 578 int hantro_g2_hevc_dec_run(struct hantro_ctx *ctx)
 579 {
 580         struct hantro_dev *vpu = ctx->dev;
 581         int ret;
 582
 583         hantro_g2_check_idle(vpu);
 584
 585         /* Prepare HEVC decoder context. */
 586         ret = hantro_hevc_dec_prepare_run(ctx);
 587         if (ret)
 588                 return ret;
 589
 590         /* Configure hardware registers. */
 591         set_params(ctx);
 592
 593         /* set reference pictures */
 594         ret = set_ref(ctx);
 595         if (ret)
 596                 return ret;
 597
 598         set_buffers(ctx);
 599         prepare_tile_info_buffer(ctx);
 600
 601         prepare_scaling_list_buffer(ctx);
 602
 603         hantro_end_prepare_run(ctx);
 604
 605         hantro_reg_write(vpu, &g2_mode, HEVC_DEC_MODE);
 606         hantro_reg_write(vpu, &g2_clk_gate_e, 1);
 607
 608         /* Don't disable output */
 609         hantro_reg_write(vpu, &g2_out_dis, 0);
 610
 611         /* Don't compress buffers */
 612         hantro_reg_write(vpu, &g2_ref_compress_bypass, 1);
 613
 614         /* Bus width and max burst */
 615         hantro_reg_write(vpu, &g2_buswidth, BUS_WIDTH_128);
 616         hantro_reg_write(vpu, &g2_max_burst, 16);
 617
 618         /* Swap */
 619         hantro_reg_write(vpu, &g2_strm_swap, 0xf);
 620         hantro_reg_write(vpu, &g2_dirmv_swap, 0xf);
 621         hantro_reg_write(vpu, &g2_compress_swap, 0xf);
 622
 623         /* Start decoding! */
 624         vdpu_write(vpu, G2_REG_INTERRUPT_DEC_E, G2_REG_INTERRUPT);
 625
 626         return 0;
 627 }