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Subject[PATCH 6/9] media: mtk-vcodec: vdec: support stateless H.264 decoding
Date
From: Yunfei Dong <yunfei.dong@mediatek.com>

Add support for H.264 decoding using the stateless API, as supported by
MT8183. This support takes advantage of the V4L2 H.264 reference list
builders.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
[acourbot: refactor, cleanup and split]
Co-developed-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
---
drivers/media/platform/Kconfig | 1 +
drivers/media/platform/mtk-vcodec/Makefile | 1 +
.../mtk-vcodec/vdec/vdec_h264_req_if.c | 802 ++++++++++++++++++
.../media/platform/mtk-vcodec/vdec_drv_if.c | 3 +
.../media/platform/mtk-vcodec/vdec_drv_if.h | 1 +
5 files changed, 808 insertions(+)
create mode 100644 drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c

diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index f0dbe048efea..ff77c6db55db 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -255,6 +255,7 @@ config VIDEO_MEDIATEK_VCODEC
depends on ARCH_MEDIATEK || COMPILE_TEST
select VIDEOBUF2_DMA_CONTIG
select V4L2_MEM2MEM_DEV
+ select V4L2_H264
select VIDEO_MEDIATEK_VPU
select MTK_SCP
help
diff --git a/drivers/media/platform/mtk-vcodec/Makefile b/drivers/media/platform/mtk-vcodec/Makefile
index 057e2519aafd..f7c1d27a85d5 100644
--- a/drivers/media/platform/mtk-vcodec/Makefile
+++ b/drivers/media/platform/mtk-vcodec/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_VIDEO_MEDIATEK_VCODEC) += mtk-vcodec-dec.o \
mtk-vcodec-dec-y := vdec/vdec_h264_if.o \
vdec/vdec_vp8_if.o \
vdec/vdec_vp9_if.o \
+ vdec/vdec_h264_req_if.o \
mtk_vcodec_dec_drv.o \
vdec_drv_if.o \
vdec_vpu_if.o \
diff --git a/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c b/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c
new file mode 100644
index 000000000000..f90518910d8d
--- /dev/null
+++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c
@@ -0,0 +1,802 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/h264-ctrls.h>
+#include <media/v4l2-h264.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "../vdec_drv_if.h"
+#include "../mtk_vcodec_util.h"
+#include "../mtk_vcodec_dec.h"
+#include "../mtk_vcodec_intr.h"
+#include "../vdec_vpu_if.h"
+#include "../vdec_drv_base.h"
+
+#define NAL_NON_IDR_SLICE 0x01
+#define NAL_IDR_SLICE 0x05
+#define NAL_TYPE(value) ((value) & 0x1F)
+
+#define BUF_PREDICTION_SZ (64 * 4096)
+#define MB_UNIT_LEN 16
+
+/* get used parameters for sps/pps */
+#define GET_MTK_VDEC_FLAG(cond, flag) \
+ { dst_param->cond = ((src_param->flags & (flag)) ? (1) : (0)); }
+#define GET_MTK_VDEC_PARAM(param) \
+ { dst_param->param = src_param->param; }
+/* motion vector size (bytes) for every macro block */
+#define HW_MB_STORE_SZ 64
+
+#define H264_MAX_MV_NUM 32
+
+/**
+ * struct mtk_h264_dpb_info - h264 dpb information
+ * @y_dma_addr: Y bitstream physical address
+ * @c_dma_addr: CbCr bitstream physical address
+ * @reference_flag: reference picture flag (short/long term reference picture)
+ * @field: field picture flag
+ */
+struct mtk_h264_dpb_info {
+ dma_addr_t y_dma_addr;
+ dma_addr_t c_dma_addr;
+ int reference_flag;
+ int field;
+};
+
+/**
+ * struct mtk_h264_sps_param - parameters for sps
+ */
+struct mtk_h264_sps_param {
+ unsigned char chroma_format_idc;
+ unsigned char bit_depth_luma_minus8;
+ unsigned char bit_depth_chroma_minus8;
+ unsigned char log2_max_frame_num_minus4;
+ unsigned char pic_order_cnt_type;
+ unsigned char log2_max_pic_order_cnt_lsb_minus4;
+ unsigned char max_num_ref_frames;
+ unsigned char separate_colour_plane_flag;
+ unsigned short pic_width_in_mbs_minus1;
+ unsigned short pic_height_in_map_units_minus1;
+ unsigned int max_frame_nums;
+ unsigned char qpprime_y_zero_transform_bypass_flag;
+ unsigned char delta_pic_order_always_zero_flag;
+ unsigned char frame_mbs_only_flag;
+ unsigned char mb_adaptive_frame_field_flag;
+ unsigned char direct_8x8_inference_flag;
+ unsigned char reserved[3];
+};
+
+/**
+ * struct mtk_h264_pps_param - parameters for pps
+ */
+struct mtk_h264_pps_param {
+ unsigned char num_ref_idx_l0_default_active_minus1;
+ unsigned char num_ref_idx_l1_default_active_minus1;
+ unsigned char weighted_bipred_idc;
+ char pic_init_qp_minus26;
+ char chroma_qp_index_offset;
+ char second_chroma_qp_index_offset;
+ unsigned char entropy_coding_mode_flag;
+ unsigned char pic_order_present_flag;
+ unsigned char deblocking_filter_control_present_flag;
+ unsigned char constrained_intra_pred_flag;
+ unsigned char weighted_pred_flag;
+ unsigned char redundant_pic_cnt_present_flag;
+ unsigned char transform_8x8_mode_flag;
+ unsigned char scaling_matrix_present_flag;
+ unsigned char reserved[2];
+};
+
+struct slice_api_h264_scaling_matrix {
+ unsigned char scaling_list_4x4[6][16];
+ unsigned char scaling_list_8x8[6][64];
+};
+
+struct slice_h264_dpb_entry {
+ unsigned long long reference_ts;
+ unsigned short frame_num;
+ unsigned short pic_num;
+ /* Note that field is indicated by v4l2_buffer.field */
+ int top_field_order_cnt;
+ int bottom_field_order_cnt;
+ unsigned int flags; /* V4L2_H264_DPB_ENTRY_FLAG_* */
+};
+
+/**
+ * struct slice_api_h264_decode_param - parameters for decode.
+ */
+struct slice_api_h264_decode_param {
+ struct slice_h264_dpb_entry dpb[16];
+ unsigned short num_slices;
+ unsigned short nal_ref_idc;
+ unsigned char ref_pic_list_p0[32];
+ unsigned char ref_pic_list_b0[32];
+ unsigned char ref_pic_list_b1[32];
+ int top_field_order_cnt;
+ int bottom_field_order_cnt;
+ unsigned int flags; /* V4L2_H264_DECODE_PARAM_FLAG_* */
+};
+
+/**
+ * struct mtk_h264_dec_slice_param - parameters for decode current frame
+ */
+struct mtk_h264_dec_slice_param {
+ struct mtk_h264_sps_param sps;
+ struct mtk_h264_pps_param pps;
+ struct slice_api_h264_scaling_matrix scaling_matrix;
+ struct slice_api_h264_decode_param decode_params;
+ struct mtk_h264_dpb_info h264_dpb_info[16];
+};
+
+/**
+ * struct h264_fb - h264 decode frame buffer information
+ * @vdec_fb_va : virtual address of struct vdec_fb
+ * @y_fb_dma : dma address of Y frame buffer (luma)
+ * @c_fb_dma : dma address of C frame buffer (chroma)
+ * @poc : picture order count of frame buffer
+ * @reserved : for 8 bytes alignment
+ */
+struct h264_fb {
+ uint64_t vdec_fb_va;
+ uint64_t y_fb_dma;
+ uint64_t c_fb_dma;
+ int32_t poc;
+ uint32_t reserved;
+};
+
+/**
+ * struct vdec_h264_dec_info - decode information
+ * @dpb_sz : decoding picture buffer size
+ * @resolution_changed : resoltion change happen
+ * @realloc_mv_buf : flag to notify driver to re-allocate mv buffer
+ * @cap_num_planes : number planes of capture buffer
+ * @bs_dma : Input bit-stream buffer dma address
+ * @y_fb_dma : Y frame buffer dma address
+ * @c_fb_dma : C frame buffer dma address
+ * @vdec_fb_va : VDEC frame buffer struct virtual address
+ */
+struct vdec_h264_dec_info {
+ uint32_t dpb_sz;
+ uint32_t resolution_changed;
+ uint32_t realloc_mv_buf;
+ uint32_t cap_num_planes;
+ uint64_t bs_dma;
+ uint64_t y_fb_dma;
+ uint64_t c_fb_dma;
+ uint64_t vdec_fb_va;
+};
+
+/**
+ * struct vdec_h264_vsi - shared memory for decode information exchange
+ * between VPU and Host.
+ * The memory is allocated by VPU then mapping to Host
+ * in vpu_dec_init() and freed in vpu_dec_deinit()
+ * by VPU.
+ * AP-W/R : AP is writer/reader on this item
+ * VPU-W/R: VPU is write/reader on this item
+ * @pred_buf_dma : HW working predication buffer dma address (AP-W, VPU-R)
+ * @mv_buf_dma : HW working motion vector buffer dma address (AP-W, VPU-R)
+ * @dec : decode information (AP-R, VPU-W)
+ * @pic : picture information (AP-R, VPU-W)
+ * @crop : crop information (AP-R, VPU-W)
+ */
+struct vdec_h264_vsi {
+ uint64_t pred_buf_dma;
+ uint64_t mv_buf_dma[H264_MAX_MV_NUM];
+ struct vdec_h264_dec_info dec;
+ struct vdec_pic_info pic;
+ struct v4l2_rect crop;
+ struct mtk_h264_dec_slice_param h264_slice_params;
+};
+
+/**
+ * struct vdec_h264_slice_inst - h264 decoder instance
+ * @num_nalu : how many nalus be decoded
+ * @ctx : point to mtk_vcodec_ctx
+ * @pred_buf : HW working predication buffer
+ * @mv_buf : HW working motion vector buffer
+ * @vpu : VPU instance
+ * @vsi_ctx : Local VSI data for this decoding context
+ */
+struct vdec_h264_slice_inst {
+ unsigned int num_nalu;
+ struct mtk_vcodec_ctx *ctx;
+ struct mtk_vcodec_mem pred_buf;
+ struct mtk_vcodec_mem mv_buf[H264_MAX_MV_NUM];
+ struct vdec_vpu_inst vpu;
+ struct vdec_h264_vsi vsi_ctx;
+ struct mtk_h264_dec_slice_param h264_slice_param;
+
+ struct v4l2_h264_dpb_entry dpb[16];
+};
+
+static void *get_ctrl_ptr(struct mtk_vcodec_ctx *ctx,
+ int id)
+{
+ struct v4l2_ctrl *ctrl = v4l2_ctrl_find(&ctx->ctrl_hdl, id);
+
+ return ctrl->p_cur.p;
+}
+
+static void get_h264_dpb_list(struct vdec_h264_slice_inst *inst,
+ struct mtk_h264_dec_slice_param *slice_param)
+{
+ struct vb2_queue *vq;
+ struct vb2_buffer *vb;
+ struct vb2_v4l2_buffer *vb2_v4l2;
+ u64 index;
+
+ vq = v4l2_m2m_get_vq(inst->ctx->m2m_ctx,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
+
+ for (index = 0; index < 16; index++) {
+ const struct slice_h264_dpb_entry *dpb;
+ int vb2_index;
+
+ dpb = &slice_param->decode_params.dpb[index];
+ if (!(dpb->flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE)) {
+ slice_param->h264_dpb_info[index].reference_flag = 0;
+ continue;
+ }
+
+ vb2_index = vb2_find_timestamp(vq, dpb->reference_ts, 0);
+ if (vb2_index < 0) {
+ mtk_vcodec_err(inst, "Reference invalid: dpb_index(%lld) reference_ts(%lld)",
+ index, dpb->reference_ts);
+ continue;
+ }
+ /* 1 for short term reference, 2 for long term reference */
+ if (!(dpb->flags & V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM))
+ slice_param->h264_dpb_info[index].reference_flag = 1;
+ else
+ slice_param->h264_dpb_info[index].reference_flag = 2;
+
+ vb = vq->bufs[vb2_index];
+ vb2_v4l2 = container_of(vb, struct vb2_v4l2_buffer, vb2_buf);
+ slice_param->h264_dpb_info[index].field = vb2_v4l2->field;
+
+ slice_param->h264_dpb_info[index].y_dma_addr =
+ vb2_dma_contig_plane_dma_addr(vb, 0);
+ if (inst->ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2) {
+ slice_param->h264_dpb_info[index].c_dma_addr =
+ vb2_dma_contig_plane_dma_addr(vb, 1);
+ }
+ }
+}
+
+static void get_h264_sps_parameters(struct mtk_h264_sps_param *dst_param,
+ const struct v4l2_ctrl_h264_sps *src_param)
+{
+ GET_MTK_VDEC_PARAM(chroma_format_idc);
+ GET_MTK_VDEC_PARAM(bit_depth_luma_minus8);
+ GET_MTK_VDEC_PARAM(bit_depth_chroma_minus8);
+ GET_MTK_VDEC_PARAM(log2_max_frame_num_minus4);
+ GET_MTK_VDEC_PARAM(pic_order_cnt_type);
+ GET_MTK_VDEC_PARAM(log2_max_pic_order_cnt_lsb_minus4);
+ GET_MTK_VDEC_PARAM(max_num_ref_frames);
+ GET_MTK_VDEC_PARAM(pic_width_in_mbs_minus1);
+ GET_MTK_VDEC_PARAM(pic_height_in_map_units_minus1);
+
+ GET_MTK_VDEC_FLAG(separate_colour_plane_flag,
+ V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE);
+ GET_MTK_VDEC_FLAG(qpprime_y_zero_transform_bypass_flag,
+ V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS);
+ GET_MTK_VDEC_FLAG(delta_pic_order_always_zero_flag,
+ V4L2_H264_SPS_FLAG_DELTA_PIC_ORDER_ALWAYS_ZERO);
+ GET_MTK_VDEC_FLAG(frame_mbs_only_flag,
+ V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY);
+ GET_MTK_VDEC_FLAG(mb_adaptive_frame_field_flag,
+ V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD);
+ GET_MTK_VDEC_FLAG(direct_8x8_inference_flag,
+ V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE);
+}
+
+static void get_h264_pps_parameters(struct mtk_h264_pps_param *dst_param,
+ const struct v4l2_ctrl_h264_pps *src_param)
+{
+ GET_MTK_VDEC_PARAM(num_ref_idx_l0_default_active_minus1);
+ GET_MTK_VDEC_PARAM(num_ref_idx_l1_default_active_minus1);
+ GET_MTK_VDEC_PARAM(weighted_bipred_idc);
+ GET_MTK_VDEC_PARAM(pic_init_qp_minus26);
+ GET_MTK_VDEC_PARAM(chroma_qp_index_offset);
+ GET_MTK_VDEC_PARAM(second_chroma_qp_index_offset);
+
+ GET_MTK_VDEC_FLAG(entropy_coding_mode_flag,
+ V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE);
+ GET_MTK_VDEC_FLAG(pic_order_present_flag,
+ V4L2_H264_PPS_FLAG_BOTTOM_FIELD_PIC_ORDER_IN_FRAME_PRESENT);
+ GET_MTK_VDEC_FLAG(weighted_pred_flag,
+ V4L2_H264_PPS_FLAG_WEIGHTED_PRED);
+ GET_MTK_VDEC_FLAG(deblocking_filter_control_present_flag,
+ V4L2_H264_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT);
+ GET_MTK_VDEC_FLAG(constrained_intra_pred_flag,
+ V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED);
+ GET_MTK_VDEC_FLAG(redundant_pic_cnt_present_flag,
+ V4L2_H264_PPS_FLAG_REDUNDANT_PIC_CNT_PRESENT);
+ GET_MTK_VDEC_FLAG(transform_8x8_mode_flag,
+ V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE);
+ GET_MTK_VDEC_FLAG(scaling_matrix_present_flag,
+ V4L2_H264_PPS_FLAG_PIC_SCALING_MATRIX_PRESENT);
+}
+
+static void
+get_h264_scaling_matrix(struct slice_api_h264_scaling_matrix *dst_matrix,
+ const struct v4l2_ctrl_h264_scaling_matrix *src_matrix)
+{
+ memcpy(dst_matrix->scaling_list_4x4, src_matrix->scaling_list_4x4,
+ sizeof(dst_matrix->scaling_list_4x4));
+
+ memcpy(dst_matrix->scaling_list_8x8, src_matrix->scaling_list_8x8,
+ sizeof(dst_matrix->scaling_list_8x8));
+}
+
+static void get_h264_decode_parameters(
+ struct slice_api_h264_decode_param *dst_params,
+ const struct v4l2_ctrl_h264_decode_params *src_params)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(dst_params->dpb); i++) {
+ struct slice_h264_dpb_entry *dst_entry = &dst_params->dpb[i];
+ const struct v4l2_h264_dpb_entry *src_entry =
+ &src_params->dpb[i];
+
+ dst_entry->reference_ts = src_entry->reference_ts;
+ dst_entry->frame_num = src_entry->frame_num;
+ dst_entry->pic_num = src_entry->pic_num;
+ dst_entry->top_field_order_cnt = src_entry->top_field_order_cnt;
+ dst_entry->bottom_field_order_cnt =
+ src_entry->bottom_field_order_cnt;
+ dst_entry->flags = src_entry->flags;
+ }
+
+ dst_params->num_slices = src_params->num_slices;
+ dst_params->nal_ref_idc = src_params->nal_ref_idc;
+ dst_params->top_field_order_cnt = src_params->top_field_order_cnt;
+ dst_params->bottom_field_order_cnt = src_params->bottom_field_order_cnt;
+ dst_params->flags = src_params->flags;
+}
+
+static bool dpb_entry_match(const struct v4l2_h264_dpb_entry *a,
+ const struct v4l2_h264_dpb_entry *b)
+{
+ return a->top_field_order_cnt == b->top_field_order_cnt &&
+ a->bottom_field_order_cnt == b->bottom_field_order_cnt;
+}
+
+/*
+ * Move DPB entries of dec_param that refer to a frame already existing in dpb
+ * into the already existing slot in dpb, and move other entries into new slots.
+ *
+ * This function is an adaptation of the similarly-named function in
+ * hantro_h264.c.
+ */
+static void update_dpb(const struct v4l2_ctrl_h264_decode_params *dec_param,
+ struct v4l2_h264_dpb_entry *dpb)
+{
+ DECLARE_BITMAP(new, ARRAY_SIZE(dec_param->dpb)) = { 0, };
+ DECLARE_BITMAP(in_use, ARRAY_SIZE(dec_param->dpb)) = { 0, };
+ DECLARE_BITMAP(used, ARRAY_SIZE(dec_param->dpb)) = { 0, };
+ unsigned int i, j;
+
+ /* Disable all entries by default, and mark the ones in use. */
+ for (i = 0; i < ARRAY_SIZE(dec_param->dpb); i++) {
+ if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE)
+ set_bit(i, in_use);
+ dpb[i].flags &= ~V4L2_H264_DPB_ENTRY_FLAG_ACTIVE;
+ }
+
+ /* Try to match new DPB entries with existing ones by their POCs. */
+ for (i = 0; i < ARRAY_SIZE(dec_param->dpb); i++) {
+ const struct v4l2_h264_dpb_entry *ndpb = &dec_param->dpb[i];
+
+ if (!(ndpb->flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE))
+ continue;
+
+ /*
+ * To cut off some comparisons, iterate only on target DPB
+ * entries were already used.
+ */
+ for_each_set_bit(j, in_use, ARRAY_SIZE(dec_param->dpb)) {
+ struct v4l2_h264_dpb_entry *cdpb;
+
+ cdpb = &dpb[j];
+ if (!dpb_entry_match(cdpb, ndpb))
+ continue;
+
+ *cdpb = *ndpb;
+ set_bit(j, used);
+ /* Don't reiterate on this one. */
+ clear_bit(j, in_use);
+ break;
+ }
+
+ if (j == ARRAY_SIZE(dec_param->dpb))
+ set_bit(i, new);
+ }
+
+ /* For entries that could not be matched, use remaining free slots. */
+ for_each_set_bit(i, new, ARRAY_SIZE(dec_param->dpb)) {
+ const struct v4l2_h264_dpb_entry *ndpb = &dec_param->dpb[i];
+ struct v4l2_h264_dpb_entry *cdpb;
+
+ /*
+ * Both arrays are of the same sizes, so there is no way
+ * we can end up with no space in target array, unless
+ * something is buggy.
+ */
+ j = find_first_zero_bit(used, ARRAY_SIZE(dec_param->dpb));
+ if (WARN_ON(j >= ARRAY_SIZE(dec_param->dpb)))
+ return;
+
+ cdpb = &dpb[j];
+ *cdpb = *ndpb;
+ set_bit(j, used);
+ }
+}
+
+static void get_vdec_decode_parameters(struct vdec_h264_slice_inst *inst)
+{
+ struct mtk_h264_dec_slice_param *slice_param = &inst->h264_slice_param;
+ const struct v4l2_ctrl_h264_decode_params *dec_params =
+ get_ctrl_ptr(inst->ctx, V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS);
+ const struct v4l2_ctrl_h264_slice_params *slice_params =
+ get_ctrl_ptr(inst->ctx, V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS);
+ const struct v4l2_ctrl_h264_sps *sps =
+ get_ctrl_ptr(inst->ctx, V4L2_CID_MPEG_VIDEO_H264_SPS);
+ struct v4l2_ctrl_h264_decode_params fixed_params = *dec_params;
+ struct v4l2_h264_reflist_builder reflist_builder;
+
+ update_dpb(dec_params, inst->dpb);
+ memcpy(fixed_params.dpb, inst->dpb, sizeof(inst->dpb));
+
+ get_h264_sps_parameters(&slice_param->sps,
+ get_ctrl_ptr(inst->ctx,
+ V4L2_CID_MPEG_VIDEO_H264_SPS));
+ get_h264_pps_parameters(&slice_param->pps,
+ get_ctrl_ptr(inst->ctx,
+ V4L2_CID_MPEG_VIDEO_H264_PPS));
+ get_h264_scaling_matrix(
+ &slice_param->scaling_matrix,
+ get_ctrl_ptr(inst->ctx,
+ V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX));
+ get_h264_decode_parameters(&slice_param->decode_params, &fixed_params);
+ get_h264_dpb_list(inst, slice_param);
+
+ /* The firmware expects unused reference list entries to be set to 32 */
+ memset(&slice_param->decode_params.ref_pic_list_p0, 32,
+ sizeof(slice_param->decode_params.ref_pic_list_p0));
+ memset(&slice_param->decode_params.ref_pic_list_b0, 32,
+ sizeof(slice_param->decode_params.ref_pic_list_b0));
+ memset(&slice_param->decode_params.ref_pic_list_b1, 32,
+ sizeof(slice_param->decode_params.ref_pic_list_b1));
+
+ /* Build the reference frames lists */
+ v4l2_h264_init_reflist_builder(&reflist_builder, dec_params,
+ slice_params, sps, inst->dpb);
+ v4l2_h264_build_p_ref_list(&reflist_builder,
+ slice_param->decode_params.ref_pic_list_p0);
+ v4l2_h264_build_b_ref_lists(&reflist_builder,
+ slice_param->decode_params.ref_pic_list_b0,
+ slice_param->decode_params.ref_pic_list_b1);
+
+ memcpy(&inst->vsi_ctx.h264_slice_params, slice_param,
+ sizeof(inst->vsi_ctx.h264_slice_params));
+}
+
+static unsigned int get_mv_buf_size(unsigned int width, unsigned int height)
+{
+ int unit_size = (width / MB_UNIT_LEN) * (height / MB_UNIT_LEN) + 8;
+
+ return HW_MB_STORE_SZ * unit_size;
+}
+
+static int allocate_predication_buf(struct vdec_h264_slice_inst *inst)
+{
+ int err = 0;
+
+ inst->pred_buf.size = BUF_PREDICTION_SZ;
+ err = mtk_vcodec_mem_alloc(inst->ctx, &inst->pred_buf);
+ if (err) {
+ mtk_vcodec_err(inst, "failed to allocate ppl buf");
+ return err;
+ }
+
+ inst->vsi_ctx.pred_buf_dma = inst->pred_buf.dma_addr;
+ return 0;
+}
+
+static void free_predication_buf(struct vdec_h264_slice_inst *inst)
+{
+ struct mtk_vcodec_mem *mem = NULL;
+
+ mtk_vcodec_debug_enter(inst);
+
+ inst->vsi_ctx.pred_buf_dma = 0;
+ mem = &inst->pred_buf;
+ if (mem->va)
+ mtk_vcodec_mem_free(inst->ctx, mem);
+}
+
+static int alloc_mv_buf(struct vdec_h264_slice_inst *inst,
+ struct vdec_pic_info *pic)
+{
+ int i;
+ int err;
+ struct mtk_vcodec_mem *mem = NULL;
+ unsigned int buf_sz = get_mv_buf_size(pic->buf_w, pic->buf_h);
+
+ mtk_v4l2_debug(3, "size = 0x%lx", buf_sz);
+ for (i = 0; i < H264_MAX_MV_NUM; i++) {
+ mem = &inst->mv_buf[i];
+ if (mem->va)
+ mtk_vcodec_mem_free(inst->ctx, mem);
+ mem->size = buf_sz;
+ err = mtk_vcodec_mem_alloc(inst->ctx, mem);
+ if (err) {
+ mtk_vcodec_err(inst, "failed to allocate mv buf");
+ return err;
+ }
+ inst->vsi_ctx.mv_buf_dma[i] = mem->dma_addr;
+ }
+
+ return 0;
+}
+
+static void free_mv_buf(struct vdec_h264_slice_inst *inst)
+{
+ int i;
+ struct mtk_vcodec_mem *mem = NULL;
+
+ for (i = 0; i < H264_MAX_MV_NUM; i++) {
+ inst->vsi_ctx.mv_buf_dma[i] = 0;
+ mem = &inst->mv_buf[i];
+ if (mem->va)
+ mtk_vcodec_mem_free(inst->ctx, mem);
+ }
+}
+
+static void get_pic_info(struct vdec_h264_slice_inst *inst,
+ struct vdec_pic_info *pic)
+{
+ struct mtk_vcodec_ctx *ctx = inst->ctx;
+
+ ctx->picinfo.buf_w = (ctx->picinfo.pic_w + 15) & 0xFFFFFFF0;
+ ctx->picinfo.buf_h = (ctx->picinfo.pic_h + 31) & 0xFFFFFFE0;
+ ctx->picinfo.fb_sz[0] = ctx->picinfo.buf_w * ctx->picinfo.buf_h;
+ ctx->picinfo.fb_sz[1] = ctx->picinfo.fb_sz[0] >> 1;
+ inst->vsi_ctx.dec.cap_num_planes =
+ ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes;
+
+ pic = &ctx->picinfo;
+ mtk_vcodec_debug(inst, "pic(%d, %d), buf(%d, %d)",
+ ctx->picinfo.pic_w, ctx->picinfo.pic_h,
+ ctx->picinfo.buf_w, ctx->picinfo.buf_h);
+ mtk_vcodec_debug(inst, "Y/C(%d, %d)", ctx->picinfo.fb_sz[0],
+ ctx->picinfo.fb_sz[1]);
+
+ if ((ctx->last_decoded_picinfo.pic_w != ctx->picinfo.pic_w) ||
+ (ctx->last_decoded_picinfo.pic_h != ctx->picinfo.pic_h)) {
+ inst->vsi_ctx.dec.resolution_changed = true;
+ if ((ctx->last_decoded_picinfo.buf_w != ctx->picinfo.buf_w) ||
+ (ctx->last_decoded_picinfo.buf_h != ctx->picinfo.buf_h))
+ inst->vsi_ctx.dec.realloc_mv_buf = true;
+
+ mtk_v4l2_debug(1, "ResChg: (%d %d) : old(%d, %d) -> new(%d, %d)",
+ inst->vsi_ctx.dec.resolution_changed,
+ inst->vsi_ctx.dec.realloc_mv_buf,
+ ctx->last_decoded_picinfo.pic_w,
+ ctx->last_decoded_picinfo.pic_h,
+ ctx->picinfo.pic_w, ctx->picinfo.pic_h);
+ }
+}
+
+static void get_crop_info(struct vdec_h264_slice_inst *inst,
+ struct v4l2_rect *cr)
+{
+ cr->left = inst->vsi_ctx.crop.left;
+ cr->top = inst->vsi_ctx.crop.top;
+ cr->width = inst->vsi_ctx.crop.width;
+ cr->height = inst->vsi_ctx.crop.height;
+
+ mtk_vcodec_debug(inst, "l=%d, t=%d, w=%d, h=%d",
+ cr->left, cr->top, cr->width, cr->height);
+}
+
+static void get_dpb_size(struct vdec_h264_slice_inst *inst,
+ unsigned int *dpb_sz)
+{
+ *dpb_sz = inst->vsi_ctx.dec.dpb_sz;
+ mtk_vcodec_debug(inst, "sz=%d", *dpb_sz);
+}
+
+static int vdec_h264_slice_init(struct mtk_vcodec_ctx *ctx)
+{
+ struct vdec_h264_slice_inst *inst = NULL;
+ int err;
+
+ inst = kzalloc(sizeof(*inst), GFP_KERNEL);
+ if (!inst)
+ return -ENOMEM;
+
+ inst->ctx = ctx;
+
+ inst->vpu.id = SCP_IPI_VDEC_H264;
+ inst->vpu.ctx = ctx;
+
+ err = vpu_dec_init(&inst->vpu);
+ if (err) {
+ mtk_vcodec_err(inst, "vdec_h264 init err=%d", err);
+ goto error_free_inst;
+ }
+
+ memcpy(&inst->vsi_ctx, inst->vpu.vsi, sizeof(inst->vsi_ctx));
+ inst->vsi_ctx.dec.resolution_changed = true;
+ inst->vsi_ctx.dec.realloc_mv_buf = true;
+
+ err = allocate_predication_buf(inst);
+ if (err)
+ goto error_deinit;
+
+ mtk_vcodec_debug(inst, "struct size = %d,%d,%d,%d\n",
+ sizeof(struct mtk_h264_sps_param),
+ sizeof(struct mtk_h264_pps_param),
+ sizeof(struct mtk_h264_dec_slice_param),
+ sizeof(struct mtk_h264_dpb_info));
+
+ mtk_vcodec_debug(inst, "H264 Instance >> %p", inst);
+
+ ctx->drv_handle = inst;
+ return 0;
+
+error_deinit:
+ vpu_dec_deinit(&inst->vpu);
+
+error_free_inst:
+ kfree(inst);
+ return err;
+}
+
+static void vdec_h264_slice_deinit(void *h_vdec)
+{
+ struct vdec_h264_slice_inst *inst =
+ (struct vdec_h264_slice_inst *)h_vdec;
+
+ mtk_vcodec_debug_enter(inst);
+
+ vpu_dec_deinit(&inst->vpu);
+ free_predication_buf(inst);
+ free_mv_buf(inst);
+
+ kfree(inst);
+}
+
+static int find_start_code(unsigned char *data, unsigned int data_sz)
+{
+ if (data_sz > 3 && data[0] == 0 && data[1] == 0 && data[2] == 1)
+ return 3;
+
+ if (data_sz > 4 && data[0] == 0 && data[1] == 0 && data[2] == 0 &&
+ data[3] == 1)
+ return 4;
+
+ return -1;
+}
+
+static int vdec_h264_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
+ struct vdec_fb *fb, bool *res_chg)
+{
+ struct vdec_h264_slice_inst *inst =
+ (struct vdec_h264_slice_inst *)h_vdec;
+ struct vdec_vpu_inst *vpu = &inst->vpu;
+ struct mtk_video_dec_buf *src_buf_info;
+ struct mtk_video_dec_buf *dst_buf_info;
+ int nal_start_idx = 0, err = 0;
+ uint32_t nal_type, data[2];
+ unsigned char *buf;
+ uint64_t y_fb_dma;
+ uint64_t c_fb_dma;
+
+ mtk_vcodec_debug(inst, "+ [%d] FB y_dma=%llx c_dma=%llx va=%p",
+ ++inst->num_nalu, y_fb_dma, c_fb_dma, fb);
+
+ /* bs NULL means flush decoder */
+ if (bs == NULL)
+ return vpu_dec_reset(vpu);
+
+ src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer);
+ dst_buf_info = container_of(fb, struct mtk_video_dec_buf, frame_buffer);
+
+ y_fb_dma = fb ? (u64)fb->base_y.dma_addr : 0;
+ c_fb_dma = fb ? (u64)fb->base_c.dma_addr : 0;
+
+ buf = (unsigned char *)bs->va;
+ nal_start_idx = find_start_code(buf, bs->size);
+ if (nal_start_idx < 0)
+ goto err_free_fb_out;
+
+ data[0] = bs->size;
+ data[1] = buf[nal_start_idx];
+ nal_type = NAL_TYPE(buf[nal_start_idx]);
+ mtk_vcodec_debug(inst, "\n + NALU[%d] type %d +\n", inst->num_nalu,
+ nal_type);
+
+ inst->vsi_ctx.dec.bs_dma = (uint64_t)bs->dma_addr;
+ inst->vsi_ctx.dec.y_fb_dma = y_fb_dma;
+ inst->vsi_ctx.dec.c_fb_dma = c_fb_dma;
+ inst->vsi_ctx.dec.vdec_fb_va = (u64)(uintptr_t)fb;
+
+ get_vdec_decode_parameters(inst);
+ *res_chg = inst->vsi_ctx.dec.resolution_changed;
+ if (*res_chg) {
+ mtk_vcodec_debug(inst, "- resolution changed -");
+ if (inst->vsi_ctx.dec.realloc_mv_buf) {
+ err = alloc_mv_buf(inst, &(inst->ctx->picinfo));
+ inst->vsi_ctx.dec.realloc_mv_buf = false;
+ if (err)
+ goto err_free_fb_out;
+ }
+ *res_chg = false;
+ }
+
+ memcpy(inst->vpu.vsi, &inst->vsi_ctx, sizeof(inst->vsi_ctx));
+ err = vpu_dec_start(vpu, data, 2);
+ if (err)
+ goto err_free_fb_out;
+
+ if (nal_type == NAL_NON_IDR_SLICE || nal_type == NAL_IDR_SLICE) {
+ /* wait decoder done interrupt */
+ err = mtk_vcodec_wait_for_done_ctx(inst->ctx,
+ MTK_INST_IRQ_RECEIVED,
+ WAIT_INTR_TIMEOUT_MS);
+ if (err)
+ goto err_free_fb_out;
+
+ vpu_dec_end(vpu);
+ }
+
+ memcpy(&inst->vsi_ctx, inst->vpu.vsi, sizeof(inst->vsi_ctx));
+ mtk_vcodec_debug(inst, "\n - NALU[%d] type=%d -\n", inst->num_nalu,
+ nal_type);
+ return 0;
+
+err_free_fb_out:
+ mtk_vcodec_err(inst, "\n - NALU[%d] err=%d -\n", inst->num_nalu, err);
+ return err;
+}
+
+static int vdec_h264_slice_get_param(void *h_vdec,
+ enum vdec_get_param_type type, void *out)
+{
+ struct vdec_h264_slice_inst *inst =
+ (struct vdec_h264_slice_inst *)h_vdec;
+
+ switch (type) {
+ case GET_PARAM_PIC_INFO:
+ get_pic_info(inst, out);
+ break;
+
+ case GET_PARAM_DPB_SIZE:
+ get_dpb_size(inst, out);
+ break;
+
+ case GET_PARAM_CROP_INFO:
+ get_crop_info(inst, out);
+ break;
+
+ default:
+ mtk_vcodec_err(inst, "invalid get parameter type=%d", type);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+const struct vdec_common_if vdec_h264_slice_if = {
+ .init = vdec_h264_slice_init,
+ .decode = vdec_h264_slice_decode,
+ .get_param = vdec_h264_slice_get_param,
+ .deinit = vdec_h264_slice_deinit,
+};
diff --git a/drivers/media/platform/mtk-vcodec/vdec_drv_if.c b/drivers/media/platform/mtk-vcodec/vdec_drv_if.c
index b18743b906ea..42008243ceac 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_drv_if.c
+++ b/drivers/media/platform/mtk-vcodec/vdec_drv_if.c
@@ -19,6 +19,9 @@ int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc)
int ret = 0;

switch (fourcc) {
+ case V4L2_PIX_FMT_H264_SLICE:
+ ctx->dec_if = &vdec_h264_slice_if;
+ break;
case V4L2_PIX_FMT_H264:
ctx->dec_if = &vdec_h264_if;
break;
diff --git a/drivers/media/platform/mtk-vcodec/vdec_drv_if.h b/drivers/media/platform/mtk-vcodec/vdec_drv_if.h
index 270d8dc9984b..961b2b6072b5 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_drv_if.h
+++ b/drivers/media/platform/mtk-vcodec/vdec_drv_if.h
@@ -55,6 +55,7 @@ struct vdec_fb_node {
};

extern const struct vdec_common_if vdec_h264_if;
+extern const struct vdec_common_if vdec_h264_slice_if;
extern const struct vdec_common_if vdec_vp8_if;
extern const struct vdec_common_if vdec_vp9_if;

--
2.27.0.212.ge8ba1cc988-goog
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