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Message-ID: <72d82086b0380cd0964ee0e2f7358c7b8f5f20e1.camel@bootlin.com>
Date: Wed, 10 Apr 2019 15:45:07 +0200
From: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To: Maxime Ripard <maxime.ripard@...tlin.com>, hans.verkuil@...co.com,
acourbot@...omium.org, sakari.ailus@...ux.intel.com,
Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: tfiga@...omium.org, posciak@...omium.org,
Chen-Yu Tsai <wens@...e.org>, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
nicolas.dufresne@...labora.com, jenskuske@...il.com,
jernej.skrabec@...il.com, jonas@...boo.se, ezequiel@...labora.com,
linux-sunxi@...glegroups.com,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
Jernej Skrabec <jernej.skrabec@...l.net>
Subject: Re: [PATCH v8 2/2] media: cedrus: Add H264 decoding support
Hi,
Le jeudi 04 avril 2019 à 14:59 +0200, Maxime Ripard a écrit :
> Introduce some basic H264 decoding support in cedrus. So far, only the
> baseline profile videos have been tested, and some more advanced features
> used in higher profiles are not even implemented.
With the change to rename V4L2_PIX_FMT_H264_SLICE_RAW and make it
private, this is:
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Cheers,
Paul
> Reviewed-by: Jernej Skrabec <jernej.skrabec@...l.net>
> Signed-off-by: Maxime Ripard <maxime.ripard@...tlin.com>
> ---
> drivers/staging/media/sunxi/cedrus/Makefile | 3 +-
> drivers/staging/media/sunxi/cedrus/cedrus.c | 31 +-
> drivers/staging/media/sunxi/cedrus/cedrus.h | 38 +-
> drivers/staging/media/sunxi/cedrus/cedrus_dec.c | 13 +-
> drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 574 +++++++++++++++-
> drivers/staging/media/sunxi/cedrus/cedrus_hw.c | 4 +-
> drivers/staging/media/sunxi/cedrus/cedrus_regs.h | 91 ++-
> drivers/staging/media/sunxi/cedrus/cedrus_video.c | 9 +-
> 8 files changed, 761 insertions(+), 2 deletions(-)
> create mode 100644 drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>
> diff --git a/drivers/staging/media/sunxi/cedrus/Makefile b/drivers/staging/media/sunxi/cedrus/Makefile
> index 808842f0119e..c85ac6db0302 100644
> --- a/drivers/staging/media/sunxi/cedrus/Makefile
> +++ b/drivers/staging/media/sunxi/cedrus/Makefile
> @@ -1,4 +1,5 @@
> # SPDX-License-Identifier: GPL-2.0
> obj-$(CONFIG_VIDEO_SUNXI_CEDRUS) += sunxi-cedrus.o
>
> -sunxi-cedrus-y = cedrus.o cedrus_video.o cedrus_hw.o cedrus_dec.o cedrus_mpeg2.o
> +sunxi-cedrus-y = cedrus.o cedrus_video.o cedrus_hw.o cedrus_dec.o \
> + cedrus_mpeg2.o cedrus_h264.o
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c b/drivers/staging/media/sunxi/cedrus/cedrus.c
> index b98add3cdedd..d613f5c24a2f 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
> @@ -40,6 +40,36 @@ static const struct cedrus_control cedrus_controls[] = {
> .codec = CEDRUS_CODEC_MPEG2,
> .required = false,
> },
> + {
> + .id = V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS,
> + .elem_size = sizeof(struct v4l2_ctrl_h264_decode_params),
> + .codec = CEDRUS_CODEC_H264,
> + .required = true,
> + },
> + {
> + .id = V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS,
> + .elem_size = sizeof(struct v4l2_ctrl_h264_slice_params),
> + .codec = CEDRUS_CODEC_H264,
> + .required = true,
> + },
> + {
> + .id = V4L2_CID_MPEG_VIDEO_H264_SPS,
> + .elem_size = sizeof(struct v4l2_ctrl_h264_sps),
> + .codec = CEDRUS_CODEC_H264,
> + .required = true,
> + },
> + {
> + .id = V4L2_CID_MPEG_VIDEO_H264_PPS,
> + .elem_size = sizeof(struct v4l2_ctrl_h264_pps),
> + .codec = CEDRUS_CODEC_H264,
> + .required = true,
> + },
> + {
> + .id = V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX,
> + .elem_size = sizeof(struct v4l2_ctrl_h264_scaling_matrix),
> + .codec = CEDRUS_CODEC_H264,
> + .required = true,
> + },
> };
>
> #define CEDRUS_CONTROLS_COUNT ARRAY_SIZE(cedrus_controls)
> @@ -278,6 +308,7 @@ static int cedrus_probe(struct platform_device *pdev)
> }
>
> dev->dec_ops[CEDRUS_CODEC_MPEG2] = &cedrus_dec_ops_mpeg2;
> + dev->dec_ops[CEDRUS_CODEC_H264] = &cedrus_dec_ops_h264;
>
> mutex_init(&dev->dev_mutex);
>
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.h b/drivers/staging/media/sunxi/cedrus/cedrus.h
> index c57c04b41d2e..bef79f630520 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus.h
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus.h
> @@ -32,7 +32,7 @@
>
> enum cedrus_codec {
> CEDRUS_CODEC_MPEG2,
> -
> + CEDRUS_CODEC_H264,
> CEDRUS_CODEC_LAST,
> };
>
> @@ -42,6 +42,12 @@ enum cedrus_irq_status {
> CEDRUS_IRQ_OK,
> };
>
> +enum cedrus_h264_pic_type {
> + CEDRUS_H264_PIC_TYPE_FRAME = 0,
> + CEDRUS_H264_PIC_TYPE_FIELD,
> + CEDRUS_H264_PIC_TYPE_MBAFF,
> +};
> +
> struct cedrus_control {
> u32 id;
> u32 elem_size;
> @@ -49,6 +55,14 @@ struct cedrus_control {
> unsigned char required:1;
> };
>
> +struct cedrus_h264_run {
> + const struct v4l2_ctrl_h264_decode_params *decode_params;
> + const struct v4l2_ctrl_h264_pps *pps;
> + const struct v4l2_ctrl_h264_scaling_matrix *scaling_matrix;
> + const struct v4l2_ctrl_h264_slice_params *slice_params;
> + const struct v4l2_ctrl_h264_sps *sps;
> +};
> +
> struct cedrus_mpeg2_run {
> const struct v4l2_ctrl_mpeg2_slice_params *slice_params;
> const struct v4l2_ctrl_mpeg2_quantization *quantization;
> @@ -59,12 +73,20 @@ struct cedrus_run {
> struct vb2_v4l2_buffer *dst;
>
> union {
> + struct cedrus_h264_run h264;
> struct cedrus_mpeg2_run mpeg2;
> };
> };
>
> struct cedrus_buffer {
> struct v4l2_m2m_buffer m2m_buf;
> +
> + union {
> + struct {
> + unsigned int position;
> + enum cedrus_h264_pic_type pic_type;
> + } h264;
> + } codec;
> };
>
> struct cedrus_ctx {
> @@ -79,6 +101,19 @@ struct cedrus_ctx {
> struct v4l2_ctrl **ctrls;
>
> struct vb2_buffer *dst_bufs[VIDEO_MAX_FRAME];
> +
> + union {
> + struct {
> + void *mv_col_buf;
> + dma_addr_t mv_col_buf_dma;
> + ssize_t mv_col_buf_field_size;
> + ssize_t mv_col_buf_size;
> + void *pic_info_buf;
> + dma_addr_t pic_info_buf_dma;
> + void *neighbor_info_buf;
> + dma_addr_t neighbor_info_buf_dma;
> + } h264;
> + } codec;
> };
>
> struct cedrus_dec_ops {
> @@ -121,6 +156,7 @@ struct cedrus_dev {
> };
>
> extern struct cedrus_dec_ops cedrus_dec_ops_mpeg2;
> +extern struct cedrus_dec_ops cedrus_dec_ops_h264;
>
> static inline void cedrus_write(struct cedrus_dev *dev, u32 reg, u32 val)
> {
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_dec.c b/drivers/staging/media/sunxi/cedrus/cedrus_dec.c
> index 4d6d602cdde6..bdad87eb9d79 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_dec.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_dec.c
> @@ -46,6 +46,19 @@ void cedrus_device_run(void *priv)
> V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION);
> break;
>
> + case V4L2_PIX_FMT_H264_SLICE_RAW:
> + run.h264.decode_params = cedrus_find_control_data(ctx,
> + V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS);
> + run.h264.pps = cedrus_find_control_data(ctx,
> + V4L2_CID_MPEG_VIDEO_H264_PPS);
> + run.h264.scaling_matrix = cedrus_find_control_data(ctx,
> + V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX);
> + run.h264.slice_params = cedrus_find_control_data(ctx,
> + V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS);
> + run.h264.sps = cedrus_find_control_data(ctx,
> + V4L2_CID_MPEG_VIDEO_H264_SPS);
> + break;
> +
> default:
> break;
> }
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> new file mode 100644
> index 000000000000..2c98a3e46d2b
> --- /dev/null
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> @@ -0,0 +1,574 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Cedrus VPU driver
> + *
> + * Copyright (c) 2013 Jens Kuske <jenskuske@...il.com>
> + * Copyright (c) 2018 Bootlin
> + */
> +
> +#include <linux/types.h>
> +
> +#include <media/videobuf2-dma-contig.h>
> +
> +#include "cedrus.h"
> +#include "cedrus_hw.h"
> +#include "cedrus_regs.h"
> +
> +enum cedrus_h264_sram_off {
> + CEDRUS_SRAM_H264_PRED_WEIGHT_TABLE = 0x000,
> + CEDRUS_SRAM_H264_FRAMEBUFFER_LIST = 0x100,
> + CEDRUS_SRAM_H264_REF_LIST_0 = 0x190,
> + CEDRUS_SRAM_H264_REF_LIST_1 = 0x199,
> + CEDRUS_SRAM_H264_SCALING_LIST_8x8_0 = 0x200,
> + CEDRUS_SRAM_H264_SCALING_LIST_8x8_1 = 0x210,
> + CEDRUS_SRAM_H264_SCALING_LIST_4x4 = 0x220,
> +};
> +
> +struct cedrus_h264_sram_ref_pic {
> + __le32 top_field_order_cnt;
> + __le32 bottom_field_order_cnt;
> + __le32 frame_info;
> + __le32 luma_ptr;
> + __le32 chroma_ptr;
> + __le32 mv_col_top_ptr;
> + __le32 mv_col_bot_ptr;
> + __le32 reserved;
> +} __packed;
> +
> +#define CEDRUS_H264_FRAME_NUM 18
> +
> +#define CEDRUS_NEIGHBOR_INFO_BUF_SIZE (16 * SZ_1K)
> +#define CEDRUS_PIC_INFO_BUF_SIZE (128 * SZ_1K)
> +
> +static void cedrus_h264_write_sram(struct cedrus_dev *dev,
> + enum cedrus_h264_sram_off off,
> + const void *data, size_t len)
> +{
> + const u32 *buffer = data;
> + size_t count = DIV_ROUND_UP(len, 4);
> +
> + cedrus_write(dev, VE_AVC_SRAM_PORT_OFFSET, off << 2);
> +
> + while (count--)
> + cedrus_write(dev, VE_AVC_SRAM_PORT_DATA, *buffer++);
> +}
> +
> +static dma_addr_t cedrus_h264_mv_col_buf_addr(struct cedrus_ctx *ctx,
> + unsigned int position,
> + unsigned int field)
> +{
> + dma_addr_t addr = ctx->codec.h264.mv_col_buf_dma;
> +
> + /* Adjust for the position */
> + addr += position * ctx->codec.h264.mv_col_buf_field_size * 2;
> +
> + /* Adjust for the field */
> + addr += field * ctx->codec.h264.mv_col_buf_field_size;
> +
> + return addr;
> +}
> +
> +static void cedrus_fill_ref_pic(struct cedrus_ctx *ctx,
> + struct cedrus_buffer *buf,
> + unsigned int top_field_order_cnt,
> + unsigned int bottom_field_order_cnt,
> + struct cedrus_h264_sram_ref_pic *pic)
> +{
> + struct vb2_buffer *vbuf = &buf->m2m_buf.vb.vb2_buf;
> + unsigned int position = buf->codec.h264.position;
> +
> + pic->top_field_order_cnt = top_field_order_cnt;
> + pic->bottom_field_order_cnt = bottom_field_order_cnt;
> + pic->frame_info = buf->codec.h264.pic_type << 8;
> +
> + pic->luma_ptr = cedrus_buf_addr(vbuf, &ctx->dst_fmt, 0);
> + pic->chroma_ptr = cedrus_buf_addr(vbuf, &ctx->dst_fmt, 1);
> + pic->mv_col_top_ptr = cedrus_h264_mv_col_buf_addr(ctx, position, 0);
> + pic->mv_col_bot_ptr = cedrus_h264_mv_col_buf_addr(ctx, position, 1);
> +}
> +
> +static void cedrus_write_frame_list(struct cedrus_ctx *ctx,
> + struct cedrus_run *run)
> +{
> + struct cedrus_h264_sram_ref_pic pic_list[CEDRUS_H264_FRAME_NUM];
> + const struct v4l2_ctrl_h264_decode_params *decode = run->h264.decode_params;
> + const struct v4l2_ctrl_h264_slice_params *slice = run->h264.slice_params;
> + const struct v4l2_ctrl_h264_sps *sps = run->h264.sps;
> + struct vb2_queue *cap_q = &ctx->fh.m2m_ctx->cap_q_ctx.q;
> + struct cedrus_buffer *output_buf;
> + struct cedrus_dev *dev = ctx->dev;
> + unsigned long used_dpbs = 0;
> + unsigned int position;
> + unsigned int output = 0;
> + unsigned int i;
> +
> + memset(pic_list, 0, sizeof(pic_list));
> +
> + for (i = 0; i < ARRAY_SIZE(decode->dpb); i++) {
> + const struct v4l2_h264_dpb_entry *dpb = &decode->dpb[i];
> + struct cedrus_buffer *cedrus_buf;
> + int buf_idx;
> +
> + if (!(dpb->flags & V4L2_H264_DPB_ENTRY_FLAG_VALID))
> + continue;
> +
> + buf_idx = vb2_find_timestamp(cap_q, dpb->reference_ts, 0);
> + if (buf_idx < 0)
> + continue;
> +
> + cedrus_buf = vb2_to_cedrus_buffer(ctx->dst_bufs[buf_idx]);
> + position = cedrus_buf->codec.h264.position;
> + used_dpbs |= BIT(position);
> +
> + if (!(dpb->flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE))
> + continue;
> +
> + cedrus_fill_ref_pic(ctx, cedrus_buf,
> + dpb->top_field_order_cnt,
> + dpb->bottom_field_order_cnt,
> + &pic_list[position]);
> +
> + output = max(position, output);
> + }
> +
> + position = find_next_zero_bit(&used_dpbs, CEDRUS_H264_FRAME_NUM,
> + output);
> + if (position >= CEDRUS_H264_FRAME_NUM)
> + position = find_first_zero_bit(&used_dpbs, CEDRUS_H264_FRAME_NUM);
> +
> + output_buf = vb2_to_cedrus_buffer(&run->dst->vb2_buf);
> + output_buf->codec.h264.position = position;
> +
> + if (slice->flags & V4L2_H264_SLICE_FLAG_FIELD_PIC)
> + output_buf->codec.h264.pic_type = CEDRUS_H264_PIC_TYPE_FIELD;
> + else if (sps->flags & V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD)
> + output_buf->codec.h264.pic_type = CEDRUS_H264_PIC_TYPE_MBAFF;
> + else
> + output_buf->codec.h264.pic_type = CEDRUS_H264_PIC_TYPE_FRAME;
> +
> + cedrus_fill_ref_pic(ctx, output_buf,
> + decode->top_field_order_cnt,
> + decode->bottom_field_order_cnt,
> + &pic_list[position]);
> +
> + cedrus_h264_write_sram(dev, CEDRUS_SRAM_H264_FRAMEBUFFER_LIST,
> + pic_list, sizeof(pic_list));
> +
> + cedrus_write(dev, VE_H264_OUTPUT_FRAME_IDX, position);
> +}
> +
> +#define CEDRUS_MAX_REF_IDX 32
> +
> +static void _cedrus_write_ref_list(struct cedrus_ctx *ctx,
> + struct cedrus_run *run,
> + const u8 *ref_list, u8 num_ref,
> + enum cedrus_h264_sram_off sram)
> +{
> + const struct v4l2_ctrl_h264_decode_params *decode = run->h264.decode_params;
> + struct vb2_queue *cap_q = &ctx->fh.m2m_ctx->cap_q_ctx.q;
> + struct cedrus_dev *dev = ctx->dev;
> + u8 sram_array[CEDRUS_MAX_REF_IDX];
> + unsigned int i;
> + size_t size;
> +
> + memset(sram_array, 0, sizeof(sram_array));
> +
> + for (i = 0; i < num_ref; i++) {
> + const struct v4l2_h264_dpb_entry *dpb;
> + const struct cedrus_buffer *cedrus_buf;
> + const struct vb2_v4l2_buffer *ref_buf;
> + unsigned int position;
> + int buf_idx;
> + u8 dpb_idx;
> +
> + dpb_idx = ref_list[i];
> + dpb = &decode->dpb[dpb_idx];
> +
> + if (!(dpb->flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE))
> + continue;
> +
> + buf_idx = vb2_find_timestamp(cap_q, dpb->reference_ts, 0);
> + if (buf_idx < 0)
> + continue;
> +
> + ref_buf = to_vb2_v4l2_buffer(ctx->dst_bufs[buf_idx]);
> + cedrus_buf = vb2_v4l2_to_cedrus_buffer(ref_buf);
> + position = cedrus_buf->codec.h264.position;
> +
> + sram_array[i] |= position << 1;
> + if (ref_buf->field == V4L2_FIELD_BOTTOM)
> + sram_array[i] |= BIT(0);
> + }
> +
> + size = min_t(size_t, ALIGN(num_ref, 4), sizeof(sram_array));
> + cedrus_h264_write_sram(dev, sram, &sram_array, size);
> +}
> +
> +static void cedrus_write_ref_list0(struct cedrus_ctx *ctx,
> + struct cedrus_run *run)
> +{
> + const struct v4l2_ctrl_h264_slice_params *slice = run->h264.slice_params;
> +
> + _cedrus_write_ref_list(ctx, run,
> + slice->ref_pic_list0,
> + slice->num_ref_idx_l0_active_minus1 + 1,
> + CEDRUS_SRAM_H264_REF_LIST_0);
> +}
> +
> +static void cedrus_write_ref_list1(struct cedrus_ctx *ctx,
> + struct cedrus_run *run)
> +{
> + const struct v4l2_ctrl_h264_slice_params *slice = run->h264.slice_params;
> +
> + _cedrus_write_ref_list(ctx, run,
> + slice->ref_pic_list1,
> + slice->num_ref_idx_l1_active_minus1 + 1,
> + CEDRUS_SRAM_H264_REF_LIST_1);
> +}
> +
> +static void cedrus_write_scaling_lists(struct cedrus_ctx *ctx,
> + struct cedrus_run *run)
> +{
> + const struct v4l2_ctrl_h264_scaling_matrix *scaling =
> + run->h264.scaling_matrix;
> + struct cedrus_dev *dev = ctx->dev;
> +
> + cedrus_h264_write_sram(dev, CEDRUS_SRAM_H264_SCALING_LIST_8x8_0,
> + scaling->scaling_list_8x8[0],
> + sizeof(scaling->scaling_list_8x8[0]));
> +
> + cedrus_h264_write_sram(dev, CEDRUS_SRAM_H264_SCALING_LIST_8x8_1,
> + scaling->scaling_list_8x8[3],
> + sizeof(scaling->scaling_list_8x8[3]));
> +
> + cedrus_h264_write_sram(dev, CEDRUS_SRAM_H264_SCALING_LIST_4x4,
> + scaling->scaling_list_4x4,
> + sizeof(scaling->scaling_list_4x4));
> +}
> +
> +static void cedrus_write_pred_weight_table(struct cedrus_ctx *ctx,
> + struct cedrus_run *run)
> +{
> + const struct v4l2_ctrl_h264_slice_params *slice =
> + run->h264.slice_params;
> + const struct v4l2_h264_pred_weight_table *pred_weight =
> + &slice->pred_weight_table;
> + struct cedrus_dev *dev = ctx->dev;
> + int i, j, k;
> +
> + cedrus_write(dev, VE_H264_SHS_WP,
> + ((pred_weight->chroma_log2_weight_denom & 0x7) << 4) |
> + ((pred_weight->luma_log2_weight_denom & 0x7) << 0));
> +
> + cedrus_write(dev, VE_AVC_SRAM_PORT_OFFSET,
> + CEDRUS_SRAM_H264_PRED_WEIGHT_TABLE << 2);
> +
> + for (i = 0; i < ARRAY_SIZE(pred_weight->weight_factors); i++) {
> + const struct v4l2_h264_weight_factors *factors =
> + &pred_weight->weight_factors[i];
> +
> + for (j = 0; j < ARRAY_SIZE(factors->luma_weight); j++) {
> + u32 val;
> +
> + val = (((u32)factors->luma_offset[j] & 0x1ff) << 16) |
> + (factors->luma_weight[j] & 0x1ff);
> + cedrus_write(dev, VE_AVC_SRAM_PORT_DATA, val);
> + }
> +
> + for (j = 0; j < ARRAY_SIZE(factors->chroma_weight); j++) {
> + for (k = 0; k < ARRAY_SIZE(factors->chroma_weight[0]); k++) {
> + u32 val;
> +
> + val = (((u32)factors->chroma_offset[j][k] & 0x1ff) << 16) |
> + (factors->chroma_weight[j][k] & 0x1ff);
> + cedrus_write(dev, VE_AVC_SRAM_PORT_DATA, val);
> + }
> + }
> + }
> +}
> +
> +static void cedrus_set_params(struct cedrus_ctx *ctx,
> + struct cedrus_run *run)
> +{
> + const struct v4l2_ctrl_h264_decode_params *decode = run->h264.decode_params;
> + const struct v4l2_ctrl_h264_slice_params *slice = run->h264.slice_params;
> + const struct v4l2_ctrl_h264_pps *pps = run->h264.pps;
> + const struct v4l2_ctrl_h264_sps *sps = run->h264.sps;
> + struct vb2_buffer *src_buf = &run->src->vb2_buf;
> + struct cedrus_dev *dev = ctx->dev;
> + dma_addr_t src_buf_addr;
> + u32 offset = slice->header_bit_size;
> + u32 len = (slice->size * 8) - offset;
> + u32 reg;
> +
> + cedrus_write(dev, VE_H264_VLD_LEN, len);
> + cedrus_write(dev, VE_H264_VLD_OFFSET, offset);
> +
> + src_buf_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
> + cedrus_write(dev, VE_H264_VLD_END,
> + src_buf_addr + vb2_get_plane_payload(src_buf, 0));
> + cedrus_write(dev, VE_H264_VLD_ADDR,
> + VE_H264_VLD_ADDR_VAL(src_buf_addr) |
> + VE_H264_VLD_ADDR_FIRST | VE_H264_VLD_ADDR_VALID |
> + VE_H264_VLD_ADDR_LAST);
> +
> + /*
> + * FIXME: Since the bitstream parsing is done in software, and
> + * in userspace, this shouldn't be needed anymore. But it
> + * turns out that removing it breaks the decoding process,
> + * without any clear indication why.
> + */
> + cedrus_write(dev, VE_H264_TRIGGER_TYPE,
> + VE_H264_TRIGGER_TYPE_INIT_SWDEC);
> +
> + if (((pps->flags & V4L2_H264_PPS_FLAG_WEIGHTED_PRED) &&
> + (slice->slice_type == V4L2_H264_SLICE_TYPE_P ||
> + slice->slice_type == V4L2_H264_SLICE_TYPE_SP)) ||
> + (pps->weighted_bipred_idc == 1 &&
> + slice->slice_type == V4L2_H264_SLICE_TYPE_B))
> + cedrus_write_pred_weight_table(ctx, run);
> +
> + if ((slice->slice_type == V4L2_H264_SLICE_TYPE_P) ||
> + (slice->slice_type == V4L2_H264_SLICE_TYPE_SP) ||
> + (slice->slice_type == V4L2_H264_SLICE_TYPE_B))
> + cedrus_write_ref_list0(ctx, run);
> +
> + if (slice->slice_type == V4L2_H264_SLICE_TYPE_B)
> + cedrus_write_ref_list1(ctx, run);
> +
> + // picture parameters
> + reg = 0;
> + /*
> + * FIXME: the kernel headers are allowing the default value to
> + * be passed, but the libva doesn't give us that.
> + */
> + reg |= (slice->num_ref_idx_l0_active_minus1 & 0x1f) << 10;
> + reg |= (slice->num_ref_idx_l1_active_minus1 & 0x1f) << 5;
> + reg |= (pps->weighted_bipred_idc & 0x3) << 2;
> + if (pps->flags & V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE)
> + reg |= VE_H264_PPS_ENTROPY_CODING_MODE;
> + if (pps->flags & V4L2_H264_PPS_FLAG_WEIGHTED_PRED)
> + reg |= VE_H264_PPS_WEIGHTED_PRED;
> + if (pps->flags & V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED)
> + reg |= VE_H264_PPS_CONSTRAINED_INTRA_PRED;
> + if (pps->flags & V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE)
> + reg |= VE_H264_PPS_TRANSFORM_8X8_MODE;
> + cedrus_write(dev, VE_H264_PPS, reg);
> +
> + // sequence parameters
> + reg = 0;
> + reg |= (sps->chroma_format_idc & 0x7) << 19;
> + reg |= (sps->pic_width_in_mbs_minus1 & 0xff) << 8;
> + reg |= sps->pic_height_in_map_units_minus1 & 0xff;
> + if (sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY)
> + reg |= VE_H264_SPS_MBS_ONLY;
> + if (sps->flags & V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD)
> + reg |= VE_H264_SPS_MB_ADAPTIVE_FRAME_FIELD;
> + if (sps->flags & V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE)
> + reg |= VE_H264_SPS_DIRECT_8X8_INFERENCE;
> + cedrus_write(dev, VE_H264_SPS, reg);
> +
> + // slice parameters
> + reg = 0;
> + reg |= decode->nal_ref_idc ? BIT(12) : 0;
> + reg |= (slice->slice_type & 0xf) << 8;
> + reg |= slice->cabac_init_idc & 0x3;
> + reg |= VE_H264_SHS_FIRST_SLICE_IN_PIC;
> + if (slice->flags & V4L2_H264_SLICE_FLAG_FIELD_PIC)
> + reg |= VE_H264_SHS_FIELD_PIC;
> + if (slice->flags & V4L2_H264_SLICE_FLAG_BOTTOM_FIELD)
> + reg |= VE_H264_SHS_BOTTOM_FIELD;
> + if (slice->flags & V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED)
> + reg |= VE_H264_SHS_DIRECT_SPATIAL_MV_PRED;
> + cedrus_write(dev, VE_H264_SHS, reg);
> +
> + reg = 0;
> + reg |= VE_H264_SHS2_NUM_REF_IDX_ACTIVE_OVRD;
> + reg |= (slice->num_ref_idx_l0_active_minus1 & 0x1f) << 24;
> + reg |= (slice->num_ref_idx_l1_active_minus1 & 0x1f) << 16;
> + reg |= (slice->disable_deblocking_filter_idc & 0x3) << 8;
> + reg |= (slice->slice_alpha_c0_offset_div2 & 0xf) << 4;
> + reg |= slice->slice_beta_offset_div2 & 0xf;
> + cedrus_write(dev, VE_H264_SHS2, reg);
> +
> + reg = 0;
> + reg |= (pps->second_chroma_qp_index_offset & 0x3f) << 16;
> + reg |= (pps->chroma_qp_index_offset & 0x3f) << 8;
> + reg |= (pps->pic_init_qp_minus26 + 26 + slice->slice_qp_delta) & 0x3f;
> + cedrus_write(dev, VE_H264_SHS_QP, reg);
> +
> + // clear status flags
> + cedrus_write(dev, VE_H264_STATUS, cedrus_read(dev, VE_H264_STATUS));
> +
> + // enable int
> + cedrus_write(dev, VE_H264_CTRL,
> + VE_H264_CTRL_SLICE_DECODE_INT |
> + VE_H264_CTRL_DECODE_ERR_INT |
> + VE_H264_CTRL_VLD_DATA_REQ_INT);
> +}
> +
> +static enum cedrus_irq_status
> +cedrus_h264_irq_status(struct cedrus_ctx *ctx)
> +{
> + struct cedrus_dev *dev = ctx->dev;
> + u32 reg = cedrus_read(dev, VE_H264_STATUS);
> +
> + if (reg & (VE_H264_STATUS_DECODE_ERR_INT |
> + VE_H264_STATUS_VLD_DATA_REQ_INT))
> + return CEDRUS_IRQ_ERROR;
> +
> + if (reg & VE_H264_CTRL_SLICE_DECODE_INT)
> + return CEDRUS_IRQ_OK;
> +
> + return CEDRUS_IRQ_NONE;
> +}
> +
> +static void cedrus_h264_irq_clear(struct cedrus_ctx *ctx)
> +{
> + struct cedrus_dev *dev = ctx->dev;
> +
> + cedrus_write(dev, VE_H264_STATUS,
> + VE_H264_STATUS_INT_MASK);
> +}
> +
> +static void cedrus_h264_irq_disable(struct cedrus_ctx *ctx)
> +{
> + struct cedrus_dev *dev = ctx->dev;
> + u32 reg = cedrus_read(dev, VE_H264_CTRL);
> +
> + cedrus_write(dev, VE_H264_CTRL,
> + reg & ~VE_H264_CTRL_INT_MASK);
> +}
> +
> +static void cedrus_h264_setup(struct cedrus_ctx *ctx,
> + struct cedrus_run *run)
> +{
> + struct cedrus_dev *dev = ctx->dev;
> +
> + cedrus_engine_enable(dev, CEDRUS_CODEC_H264);
> +
> + cedrus_write(dev, VE_H264_SDROT_CTRL, 0);
> + cedrus_write(dev, VE_H264_EXTRA_BUFFER1,
> + ctx->codec.h264.pic_info_buf_dma);
> + cedrus_write(dev, VE_H264_EXTRA_BUFFER2,
> + ctx->codec.h264.neighbor_info_buf_dma);
> +
> + cedrus_write_scaling_lists(ctx, run);
> + cedrus_write_frame_list(ctx, run);
> +
> + cedrus_set_params(ctx, run);
> +}
> +
> +static int cedrus_h264_start(struct cedrus_ctx *ctx)
> +{
> + struct cedrus_dev *dev = ctx->dev;
> + unsigned int field_size;
> + unsigned int mv_col_size;
> + int ret;
> +
> + /*
> + * FIXME: It seems that the H6 cedarX code is using a formula
> + * here based on the size of the frame, while all the older
> + * code is using a fixed size, so that might need to be
> + * changed at some point.
> + */
> + ctx->codec.h264.pic_info_buf =
> + dma_alloc_coherent(dev->dev, CEDRUS_PIC_INFO_BUF_SIZE,
> + &ctx->codec.h264.pic_info_buf_dma,
> + GFP_KERNEL);
> + if (!ctx->codec.h264.pic_info_buf)
> + return -ENOMEM;
> +
> + /*
> + * That buffer is supposed to be 16kiB in size, and be aligned
> + * on 16kiB as well. However, dma_alloc_coherent provides the
> + * guarantee that we'll have a CPU and DMA address aligned on
> + * the smallest page order that is greater to the requested
> + * size, so we don't have to overallocate.
> + */
> + ctx->codec.h264.neighbor_info_buf =
> + dma_alloc_coherent(dev->dev, CEDRUS_NEIGHBOR_INFO_BUF_SIZE,
> + &ctx->codec.h264.neighbor_info_buf_dma,
> + GFP_KERNEL);
> + if (!ctx->codec.h264.neighbor_info_buf) {
> + ret = -ENOMEM;
> + goto err_pic_buf;
> + }
> +
> + field_size = DIV_ROUND_UP(ctx->src_fmt.width, 16) *
> + DIV_ROUND_UP(ctx->src_fmt.height, 16) * 16;
> +
> + /*
> + * FIXME: This is actually conditional to
> + * V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE not being set, we
> + * might have to rework this if memory efficiency ever is
> + * something we need to work on.
> + */
> + field_size = field_size * 2;
> +
> + /*
> + * FIXME: This is actually conditional to
> + * V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY not being set, we might
> + * have to rework this if memory efficiency ever is something
> + * we need to work on.
> + */
> + field_size = field_size * 2;
> + ctx->codec.h264.mv_col_buf_field_size = field_size;
> +
> + mv_col_size = field_size * 2 * CEDRUS_H264_FRAME_NUM;
> + ctx->codec.h264.mv_col_buf_size = mv_col_size;
> + ctx->codec.h264.mv_col_buf = dma_alloc_coherent(dev->dev,
> + ctx->codec.h264.mv_col_buf_size,
> + &ctx->codec.h264.mv_col_buf_dma,
> + GFP_KERNEL);
> + if (!ctx->codec.h264.mv_col_buf) {
> + ret = -ENOMEM;
> + goto err_neighbor_buf;
> + }
> +
> + return 0;
> +
> +err_neighbor_buf:
> + dma_free_coherent(dev->dev, CEDRUS_NEIGHBOR_INFO_BUF_SIZE,
> + ctx->codec.h264.neighbor_info_buf,
> + ctx->codec.h264.neighbor_info_buf_dma);
> +
> +err_pic_buf:
> + dma_free_coherent(dev->dev, CEDRUS_PIC_INFO_BUF_SIZE,
> + ctx->codec.h264.pic_info_buf,
> + ctx->codec.h264.pic_info_buf_dma);
> + return ret;
> +}
> +
> +static void cedrus_h264_stop(struct cedrus_ctx *ctx)
> +{
> + struct cedrus_dev *dev = ctx->dev;
> +
> + dma_free_coherent(dev->dev, ctx->codec.h264.mv_col_buf_size,
> + ctx->codec.h264.mv_col_buf,
> + ctx->codec.h264.mv_col_buf_dma);
> + dma_free_coherent(dev->dev, CEDRUS_NEIGHBOR_INFO_BUF_SIZE,
> + ctx->codec.h264.neighbor_info_buf,
> + ctx->codec.h264.neighbor_info_buf_dma);
> + dma_free_coherent(dev->dev, CEDRUS_PIC_INFO_BUF_SIZE,
> + ctx->codec.h264.pic_info_buf,
> + ctx->codec.h264.pic_info_buf_dma);
> +}
> +
> +static void cedrus_h264_trigger(struct cedrus_ctx *ctx)
> +{
> + struct cedrus_dev *dev = ctx->dev;
> +
> + cedrus_write(dev, VE_H264_TRIGGER_TYPE,
> + VE_H264_TRIGGER_TYPE_AVC_SLICE_DECODE);
> +}
> +
> +struct cedrus_dec_ops cedrus_dec_ops_h264 = {
> + .irq_clear = cedrus_h264_irq_clear,
> + .irq_disable = cedrus_h264_irq_disable,
> + .irq_status = cedrus_h264_irq_status,
> + .setup = cedrus_h264_setup,
> + .start = cedrus_h264_start,
> + .stop = cedrus_h264_stop,
> + .trigger = cedrus_h264_trigger,
> +};
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
> index fbfff7c1c771..748f7f673547 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
> @@ -46,6 +46,10 @@ int cedrus_engine_enable(struct cedrus_dev *dev, enum cedrus_codec codec)
> reg |= VE_MODE_DEC_MPEG;
> break;
>
> + case CEDRUS_CODEC_H264:
> + reg |= VE_MODE_DEC_H264;
> + break;
> +
> default:
> return -EINVAL;
> }
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_regs.h b/drivers/staging/media/sunxi/cedrus/cedrus_regs.h
> index de2d6b6f64bf..3e9931416e45 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_regs.h
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_regs.h
> @@ -232,4 +232,95 @@
> #define VE_DEC_MPEG_ROT_LUMA (VE_ENGINE_DEC_MPEG + 0xcc)
> #define VE_DEC_MPEG_ROT_CHROMA (VE_ENGINE_DEC_MPEG + 0xd0)
>
> +#define VE_H264_SPS 0x200
> +#define VE_H264_SPS_MBS_ONLY BIT(18)
> +#define VE_H264_SPS_MB_ADAPTIVE_FRAME_FIELD BIT(17)
> +#define VE_H264_SPS_DIRECT_8X8_INFERENCE BIT(16)
> +
> +#define VE_H264_PPS 0x204
> +#define VE_H264_PPS_ENTROPY_CODING_MODE BIT(15)
> +#define VE_H264_PPS_WEIGHTED_PRED BIT(4)
> +#define VE_H264_PPS_CONSTRAINED_INTRA_PRED BIT(1)
> +#define VE_H264_PPS_TRANSFORM_8X8_MODE BIT(0)
> +
> +#define VE_H264_SHS 0x208
> +#define VE_H264_SHS_FIRST_SLICE_IN_PIC BIT(5)
> +#define VE_H264_SHS_FIELD_PIC BIT(4)
> +#define VE_H264_SHS_BOTTOM_FIELD BIT(3)
> +#define VE_H264_SHS_DIRECT_SPATIAL_MV_PRED BIT(2)
> +
> +#define VE_H264_SHS2 0x20c
> +#define VE_H264_SHS2_NUM_REF_IDX_ACTIVE_OVRD BIT(12)
> +
> +#define VE_H264_SHS_WP 0x210
> +
> +#define VE_H264_SHS_QP 0x21c
> +#define VE_H264_SHS_QP_SCALING_MATRIX_DEFAULT BIT(24)
> +
> +#define VE_H264_CTRL 0x220
> +#define VE_H264_CTRL_VLD_DATA_REQ_INT BIT(2)
> +#define VE_H264_CTRL_DECODE_ERR_INT BIT(1)
> +#define VE_H264_CTRL_SLICE_DECODE_INT BIT(0)
> +
> +#define VE_H264_CTRL_INT_MASK (VE_H264_CTRL_VLD_DATA_REQ_INT | \
> + VE_H264_CTRL_DECODE_ERR_INT | \
> + VE_H264_CTRL_SLICE_DECODE_INT)
> +
> +#define VE_H264_TRIGGER_TYPE 0x224
> +#define VE_H264_TRIGGER_TYPE_AVC_SLICE_DECODE (8 << 0)
> +#define VE_H264_TRIGGER_TYPE_INIT_SWDEC (7 << 0)
> +
> +#define VE_H264_STATUS 0x228
> +#define VE_H264_STATUS_VLD_DATA_REQ_INT VE_H264_CTRL_VLD_DATA_REQ_INT
> +#define VE_H264_STATUS_DECODE_ERR_INT VE_H264_CTRL_DECODE_ERR_INT
> +#define VE_H264_STATUS_SLICE_DECODE_INT VE_H264_CTRL_SLICE_DECODE_INT
> +
> +#define VE_H264_STATUS_INT_MASK VE_H264_CTRL_INT_MASK
> +
> +#define VE_H264_CUR_MB_NUM 0x22c
> +
> +#define VE_H264_VLD_ADDR 0x230
> +#define VE_H264_VLD_ADDR_FIRST BIT(30)
> +#define VE_H264_VLD_ADDR_LAST BIT(29)
> +#define VE_H264_VLD_ADDR_VALID BIT(28)
> +#define VE_H264_VLD_ADDR_VAL(x) (((x) & 0x0ffffff0) | ((x) >> 28))
> +
> +#define VE_H264_VLD_OFFSET 0x234
> +#define VE_H264_VLD_LEN 0x238
> +#define VE_H264_VLD_END 0x23c
> +#define VE_H264_SDROT_CTRL 0x240
> +#define VE_H264_OUTPUT_FRAME_IDX 0x24c
> +#define VE_H264_EXTRA_BUFFER1 0x250
> +#define VE_H264_EXTRA_BUFFER2 0x254
> +#define VE_H264_BASIC_BITS 0x2dc
> +#define VE_AVC_SRAM_PORT_OFFSET 0x2e0
> +#define VE_AVC_SRAM_PORT_DATA 0x2e4
> +
> +#define VE_ISP_INPUT_SIZE 0xa00
> +#define VE_ISP_INPUT_STRIDE 0xa04
> +#define VE_ISP_CTRL 0xa08
> +#define VE_ISP_INPUT_LUMA 0xa78
> +#define VE_ISP_INPUT_CHROMA 0xa7c
> +
> +#define VE_AVC_PARAM 0xb04
> +#define VE_AVC_QP 0xb08
> +#define VE_AVC_MOTION_EST 0xb10
> +#define VE_AVC_CTRL 0xb14
> +#define VE_AVC_TRIGGER 0xb18
> +#define VE_AVC_STATUS 0xb1c
> +#define VE_AVC_BASIC_BITS 0xb20
> +#define VE_AVC_UNK_BUF 0xb60
> +#define VE_AVC_VLE_ADDR 0xb80
> +#define VE_AVC_VLE_END 0xb84
> +#define VE_AVC_VLE_OFFSET 0xb88
> +#define VE_AVC_VLE_MAX 0xb8c
> +#define VE_AVC_VLE_LENGTH 0xb90
> +#define VE_AVC_REF_LUMA 0xba0
> +#define VE_AVC_REF_CHROMA 0xba4
> +#define VE_AVC_REC_LUMA 0xbb0
> +#define VE_AVC_REC_CHROMA 0xbb4
> +#define VE_AVC_REF_SLUMA 0xbb8
> +#define VE_AVC_REC_SLUMA 0xbbc
> +#define VE_AVC_MB_INFO 0xbc0
> +
> #endif
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_video.c b/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> index 9673874ece10..e2b530b1a956 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> @@ -38,6 +38,10 @@ static struct cedrus_format cedrus_formats[] = {
> .directions = CEDRUS_DECODE_SRC,
> },
> {
> + .pixelformat = V4L2_PIX_FMT_H264_SLICE_RAW,
> + .directions = CEDRUS_DECODE_SRC,
> + },
> + {
> .pixelformat = V4L2_PIX_FMT_SUNXI_TILED_NV12,
> .directions = CEDRUS_DECODE_DST,
> },
> @@ -100,6 +104,7 @@ static void cedrus_prepare_format(struct v4l2_pix_format *pix_fmt)
>
> switch (pix_fmt->pixelformat) {
> case V4L2_PIX_FMT_MPEG2_SLICE:
> + case V4L2_PIX_FMT_H264_SLICE_RAW:
> /* Zero bytes per line for encoded source. */
> bytesperline = 0;
>
> @@ -464,6 +469,10 @@ static int cedrus_start_streaming(struct vb2_queue *vq, unsigned int count)
> ctx->current_codec = CEDRUS_CODEC_MPEG2;
> break;
>
> + case V4L2_PIX_FMT_H264_SLICE_RAW:
> + ctx->current_codec = CEDRUS_CODEC_H264;
> + break;
> +
> default:
> return -EINVAL;
> }
--
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
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