diff options
Diffstat (limited to 'drivers/media/platform/verisilicon/hantro_g1_h264_dec.c')
| -rw-r--r-- | drivers/media/platform/verisilicon/hantro_g1_h264_dec.c | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/drivers/media/platform/verisilicon/hantro_g1_h264_dec.c b/drivers/media/platform/verisilicon/hantro_g1_h264_dec.c new file mode 100644 index 000000000000..9de7f05eff2a --- /dev/null +++ b/drivers/media/platform/verisilicon/hantro_g1_h264_dec.c @@ -0,0 +1,284 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Rockchip RK3288 VPU codec driver + * + * Copyright (c) 2014 Rockchip Electronics Co., Ltd. + * Hertz Wong <hertz.wong@rock-chips.com> + * Herman Chen <herman.chen@rock-chips.com> + * + * Copyright (C) 2014 Google, Inc. + * Tomasz Figa <tfiga@chromium.org> + */ + +#include <linux/types.h> +#include <linux/sort.h> + +#include <media/v4l2-mem2mem.h> + +#include "hantro_g1_regs.h" +#include "hantro_hw.h" +#include "hantro_v4l2.h" + +static void set_params(struct hantro_ctx *ctx, struct vb2_v4l2_buffer *src_buf) +{ + const struct hantro_h264_dec_ctrls *ctrls = &ctx->h264_dec.ctrls; + const struct v4l2_ctrl_h264_decode_params *dec_param = ctrls->decode; + const struct v4l2_ctrl_h264_sps *sps = ctrls->sps; + const struct v4l2_ctrl_h264_pps *pps = ctrls->pps; + struct hantro_dev *vpu = ctx->dev; + u32 reg; + + /* Decoder control register 0. */ + reg = G1_REG_DEC_CTRL0_DEC_AXI_AUTO; + if (sps->flags & V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD) + reg |= G1_REG_DEC_CTRL0_SEQ_MBAFF_E; + if (sps->profile_idc > 66) { + reg |= G1_REG_DEC_CTRL0_PICORD_COUNT_E; + if (dec_param->nal_ref_idc) + reg |= G1_REG_DEC_CTRL0_WRITE_MVS_E; + } + + if (!(sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY) && + (sps->flags & V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD || + dec_param->flags & V4L2_H264_DECODE_PARAM_FLAG_FIELD_PIC)) + reg |= G1_REG_DEC_CTRL0_PIC_INTERLACE_E; + if (dec_param->flags & V4L2_H264_DECODE_PARAM_FLAG_FIELD_PIC) + reg |= G1_REG_DEC_CTRL0_PIC_FIELDMODE_E; + if (!(dec_param->flags & V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD)) + reg |= G1_REG_DEC_CTRL0_PIC_TOPFIELD_E; + vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL0); + + /* Decoder control register 1. */ + reg = G1_REG_DEC_CTRL1_PIC_MB_WIDTH(MB_WIDTH(ctx->src_fmt.width)) | + G1_REG_DEC_CTRL1_PIC_MB_HEIGHT_P(MB_HEIGHT(ctx->src_fmt.height)) | + G1_REG_DEC_CTRL1_REF_FRAMES(sps->max_num_ref_frames); + vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL1); + + /* Decoder control register 2. */ + reg = G1_REG_DEC_CTRL2_CH_QP_OFFSET(pps->chroma_qp_index_offset) | + G1_REG_DEC_CTRL2_CH_QP_OFFSET2(pps->second_chroma_qp_index_offset); + + if (pps->flags & V4L2_H264_PPS_FLAG_SCALING_MATRIX_PRESENT) + reg |= G1_REG_DEC_CTRL2_TYPE1_QUANT_E; + if (!(sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY)) + reg |= G1_REG_DEC_CTRL2_FIELDPIC_FLAG_E; + vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL2); + + /* Decoder control register 3. */ + reg = G1_REG_DEC_CTRL3_START_CODE_E | + G1_REG_DEC_CTRL3_INIT_QP(pps->pic_init_qp_minus26 + 26) | + G1_REG_DEC_CTRL3_STREAM_LEN(vb2_get_plane_payload(&src_buf->vb2_buf, 0)); + vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL3); + + /* Decoder control register 4. */ + reg = G1_REG_DEC_CTRL4_FRAMENUM_LEN(sps->log2_max_frame_num_minus4 + 4) | + G1_REG_DEC_CTRL4_FRAMENUM(dec_param->frame_num) | + G1_REG_DEC_CTRL4_WEIGHT_BIPR_IDC(pps->weighted_bipred_idc); + if (pps->flags & V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE) + reg |= G1_REG_DEC_CTRL4_CABAC_E; + if (sps->flags & V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE) + reg |= G1_REG_DEC_CTRL4_DIR_8X8_INFER_E; + if (sps->profile_idc >= 100 && sps->chroma_format_idc == 0) + reg |= G1_REG_DEC_CTRL4_BLACKWHITE_E; + if (pps->flags & V4L2_H264_PPS_FLAG_WEIGHTED_PRED) + reg |= G1_REG_DEC_CTRL4_WEIGHT_PRED_E; + vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL4); + + /* Decoder control register 5. */ + reg = G1_REG_DEC_CTRL5_REFPIC_MK_LEN(dec_param->dec_ref_pic_marking_bit_size) | + G1_REG_DEC_CTRL5_IDR_PIC_ID(dec_param->idr_pic_id); + if (pps->flags & V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED) + reg |= G1_REG_DEC_CTRL5_CONST_INTRA_E; + if (pps->flags & V4L2_H264_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT) + reg |= G1_REG_DEC_CTRL5_FILT_CTRL_PRES; + if (pps->flags & V4L2_H264_PPS_FLAG_REDUNDANT_PIC_CNT_PRESENT) + reg |= G1_REG_DEC_CTRL5_RDPIC_CNT_PRES; + if (pps->flags & V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE) + reg |= G1_REG_DEC_CTRL5_8X8TRANS_FLAG_E; + if (dec_param->flags & V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC) + reg |= G1_REG_DEC_CTRL5_IDR_PIC_E; + vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL5); + + /* Decoder control register 6. */ + reg = G1_REG_DEC_CTRL6_PPS_ID(pps->pic_parameter_set_id) | + G1_REG_DEC_CTRL6_REFIDX0_ACTIVE(pps->num_ref_idx_l0_default_active_minus1 + 1) | + G1_REG_DEC_CTRL6_REFIDX1_ACTIVE(pps->num_ref_idx_l1_default_active_minus1 + 1) | + G1_REG_DEC_CTRL6_POC_LENGTH(dec_param->pic_order_cnt_bit_size); + vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL6); + + /* Error concealment register. */ + vdpu_write_relaxed(vpu, 0, G1_REG_ERR_CONC); + + /* Prediction filter tap register. */ + vdpu_write_relaxed(vpu, + G1_REG_PRED_FLT_PRED_BC_TAP_0_0(1) | + G1_REG_PRED_FLT_PRED_BC_TAP_0_1(-5 & 0x3ff) | + G1_REG_PRED_FLT_PRED_BC_TAP_0_2(20), + G1_REG_PRED_FLT); + + /* Reference picture buffer control register. */ + vdpu_write_relaxed(vpu, 0, G1_REG_REF_BUF_CTRL); + + /* Reference picture buffer control register 2. */ + vdpu_write_relaxed(vpu, G1_REG_REF_BUF_CTRL2_APF_THRESHOLD(8), + G1_REG_REF_BUF_CTRL2); +} + +static void set_ref(struct hantro_ctx *ctx) +{ + const struct v4l2_h264_reference *b0_reflist, *b1_reflist, *p_reflist; + struct hantro_dev *vpu = ctx->dev; + int reg_num; + u32 reg; + int i; + + vdpu_write_relaxed(vpu, ctx->h264_dec.dpb_valid, G1_REG_VALID_REF); + vdpu_write_relaxed(vpu, ctx->h264_dec.dpb_longterm, G1_REG_LT_REF); + + /* + * Set up reference frame picture numbers. + * + * Each G1_REG_REF_PIC(x) register contains numbers of two + * subsequential reference pictures. + */ + for (i = 0; i < HANTRO_H264_DPB_SIZE; i += 2) { + reg = G1_REG_REF_PIC_REFER0_NBR(hantro_h264_get_ref_nbr(ctx, i)) | + G1_REG_REF_PIC_REFER1_NBR(hantro_h264_get_ref_nbr(ctx, i + 1)); + vdpu_write_relaxed(vpu, reg, G1_REG_REF_PIC(i / 2)); + } + + b0_reflist = ctx->h264_dec.reflists.b0; + b1_reflist = ctx->h264_dec.reflists.b1; + p_reflist = ctx->h264_dec.reflists.p; + + /* + * Each G1_REG_BD_REF_PIC(x) register contains three entries + * of each forward and backward picture list. + */ + reg_num = 0; + for (i = 0; i < 15; i += 3) { + reg = G1_REG_BD_REF_PIC_BINIT_RLIST_F0(b0_reflist[i].index) | + G1_REG_BD_REF_PIC_BINIT_RLIST_F1(b0_reflist[i + 1].index) | + G1_REG_BD_REF_PIC_BINIT_RLIST_F2(b0_reflist[i + 2].index) | + G1_REG_BD_REF_PIC_BINIT_RLIST_B0(b1_reflist[i].index) | + G1_REG_BD_REF_PIC_BINIT_RLIST_B1(b1_reflist[i + 1].index) | + G1_REG_BD_REF_PIC_BINIT_RLIST_B2(b1_reflist[i + 2].index); + vdpu_write_relaxed(vpu, reg, G1_REG_BD_REF_PIC(reg_num++)); + } + + /* + * G1_REG_BD_P_REF_PIC register contains last entries (index 15) + * of forward and backward reference picture lists and first 4 entries + * of P forward picture list. + */ + reg = G1_REG_BD_P_REF_PIC_BINIT_RLIST_F15(b0_reflist[15].index) | + G1_REG_BD_P_REF_PIC_BINIT_RLIST_B15(b1_reflist[15].index) | + G1_REG_BD_P_REF_PIC_PINIT_RLIST_F0(p_reflist[0].index) | + G1_REG_BD_P_REF_PIC_PINIT_RLIST_F1(p_reflist[1].index) | + G1_REG_BD_P_REF_PIC_PINIT_RLIST_F2(p_reflist[2].index) | + G1_REG_BD_P_REF_PIC_PINIT_RLIST_F3(p_reflist[3].index); + vdpu_write_relaxed(vpu, reg, G1_REG_BD_P_REF_PIC); + + /* + * Each G1_REG_FWD_PIC(x) register contains six consecutive + * entries of P forward picture list, starting from index 4. + */ + reg_num = 0; + for (i = 4; i < HANTRO_H264_DPB_SIZE; i += 6) { + reg = G1_REG_FWD_PIC_PINIT_RLIST_F0(p_reflist[i].index) | + G1_REG_FWD_PIC_PINIT_RLIST_F1(p_reflist[i + 1].index) | + G1_REG_FWD_PIC_PINIT_RLIST_F2(p_reflist[i + 2].index) | + G1_REG_FWD_PIC_PINIT_RLIST_F3(p_reflist[i + 3].index) | + G1_REG_FWD_PIC_PINIT_RLIST_F4(p_reflist[i + 4].index) | + G1_REG_FWD_PIC_PINIT_RLIST_F5(p_reflist[i + 5].index); + vdpu_write_relaxed(vpu, reg, G1_REG_FWD_PIC(reg_num++)); + } + + /* Set up addresses of DPB buffers. */ + for (i = 0; i < HANTRO_H264_DPB_SIZE; i++) { + dma_addr_t dma_addr = hantro_h264_get_ref_buf(ctx, i); + + vdpu_write_relaxed(vpu, dma_addr, G1_REG_ADDR_REF(i)); + } +} + +static void set_buffers(struct hantro_ctx *ctx, struct vb2_v4l2_buffer *src_buf) +{ + const struct hantro_h264_dec_ctrls *ctrls = &ctx->h264_dec.ctrls; + struct vb2_v4l2_buffer *dst_buf; + struct hantro_dev *vpu = ctx->dev; + dma_addr_t src_dma, dst_dma; + size_t offset = 0; + + /* Source (stream) buffer. */ + src_dma = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0); + vdpu_write_relaxed(vpu, src_dma, G1_REG_ADDR_STR); + + /* Destination (decoded frame) buffer. */ + dst_buf = hantro_get_dst_buf(ctx); + dst_dma = hantro_get_dec_buf_addr(ctx, &dst_buf->vb2_buf); + /* Adjust dma addr to start at second line for bottom field */ + if (ctrls->decode->flags & V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD) + offset = ALIGN(ctx->src_fmt.width, MB_DIM); + vdpu_write_relaxed(vpu, dst_dma + offset, G1_REG_ADDR_DST); + + /* Higher profiles require DMV buffer appended to reference frames. */ + if (ctrls->sps->profile_idc > 66 && ctrls->decode->nal_ref_idc) { + unsigned int bytes_per_mb = 384; + + /* DMV buffer for monochrome start directly after Y-plane */ + if (ctrls->sps->profile_idc >= 100 && + ctrls->sps->chroma_format_idc == 0) + bytes_per_mb = 256; + offset = bytes_per_mb * MB_WIDTH(ctx->src_fmt.width) * + MB_HEIGHT(ctx->src_fmt.height); + + /* + * DMV buffer is split in two for field encoded frames, + * adjust offset for bottom field + */ + if (ctrls->decode->flags & V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD) + offset += 32 * MB_WIDTH(ctx->src_fmt.width) * + MB_HEIGHT(ctx->src_fmt.height); + vdpu_write_relaxed(vpu, dst_dma + offset, G1_REG_ADDR_DIR_MV); + } + + /* Auxiliary buffer prepared in hantro_g1_h264_dec_prepare_table(). */ + vdpu_write_relaxed(vpu, ctx->h264_dec.priv.dma, G1_REG_ADDR_QTABLE); +} + +int hantro_g1_h264_dec_run(struct hantro_ctx *ctx) +{ + struct hantro_dev *vpu = ctx->dev; + struct vb2_v4l2_buffer *src_buf; + int ret; + + /* Prepare the H264 decoder context. */ + ret = hantro_h264_dec_prepare_run(ctx); + if (ret) + return ret; + + /* Configure hardware registers. */ + src_buf = hantro_get_src_buf(ctx); + set_params(ctx, src_buf); + set_ref(ctx); + set_buffers(ctx, src_buf); + + hantro_end_prepare_run(ctx); + + /* Start decoding! */ + vdpu_write_relaxed(vpu, + G1_REG_CONFIG_DEC_AXI_RD_ID(0xffu) | + G1_REG_CONFIG_DEC_TIMEOUT_E | + G1_REG_CONFIG_DEC_OUT_ENDIAN | + G1_REG_CONFIG_DEC_STRENDIAN_E | + G1_REG_CONFIG_DEC_MAX_BURST(16) | + G1_REG_CONFIG_DEC_OUTSWAP32_E | + G1_REG_CONFIG_DEC_INSWAP32_E | + G1_REG_CONFIG_DEC_STRSWAP32_E | + G1_REG_CONFIG_DEC_CLK_GATE_E, + G1_REG_CONFIG); + vdpu_write(vpu, G1_REG_INTERRUPT_DEC_E, G1_REG_INTERRUPT); + + return 0; +} |