Resguardo inicial

linux-7.2.3/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_if.c

@@ -0,0 +1,494 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2016 MediaTek Inc.
+ * Author: PC Chen <pc.chen@mediatek.com>
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#include "../vdec_drv_if.h"
+#include "../mtk_vcodec_dec.h"
+#include "../../common/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_H264_PPS				0x08
+#define NAL_TYPE(value)				((value) & 0x1F)
+
+#define BUF_PREDICTION_SZ			(32 * 1024)
+
+#define MB_UNIT_LEN				16
+
+/* motion vector size (bytes) for every macro block */
+#define HW_MB_STORE_SZ				64
+
+#define H264_MAX_FB_NUM				17
+#define HDR_PARSING_BUF_SZ			1024
+
+#define DEC_ERR_RET(ret)			((ret) >> 16)
+#define H264_ERR_NOT_VALID			3
+
+/**
+ * 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 h264_ring_fb_list - ring frame buffer list
+ * @fb_list   : frame buffer array
+ * @read_idx  : read index
+ * @write_idx : write index
+ * @count     : buffer count in list
+ * @reserved  : for 8 bytes alignment
+ */
+struct h264_ring_fb_list {
+	struct h264_fb fb_list[H264_MAX_FB_NUM];
+	unsigned int read_idx;
+	unsigned int write_idx;
+	unsigned int count;
+	unsigned int reserved;
+};
+
+/**
+ * struct vdec_h264_dec_info - decode information
+ * @dpb_sz		: decoding picture buffer size
+ * @resolution_changed  : resolution change happen
+ * @realloc_mv_buf	: flag to notify driver to re-allocate mv buffer
+ * @reserved		: for 8 bytes alignment
+ * @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 reserved;
+	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
+ * @hdr_buf      : Header parsing buffer (AP-W, VPU-R)
+ * @pred_buf_dma : HW working prediction buffer dma address (AP-W, VPU-R)
+ * @mv_buf_dma   : HW working motion vector buffer dma address (AP-W, VPU-R)
+ * @list_free    : free frame buffer ring list (AP-W/R, VPU-W)
+ * @list_disp    : display frame buffer ring list (AP-R, VPU-W)
+ * @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 {
+	unsigned char hdr_buf[HDR_PARSING_BUF_SZ];
+	uint64_t pred_buf_dma;
+	uint64_t mv_buf_dma[H264_MAX_FB_NUM];
+	struct h264_ring_fb_list list_free;
+	struct h264_ring_fb_list list_disp;
+	struct vdec_h264_dec_info dec;
+	struct vdec_pic_info pic;
+	struct v4l2_rect crop;
+};
+
+/**
+ * struct vdec_h264_inst - h264 decoder instance
+ * @num_nalu : how many nalus be decoded
+ * @ctx      : point to mtk_vcodec_dec_ctx
+ * @pred_buf : HW working prediction buffer
+ * @mv_buf   : HW working motion vector buffer
+ * @vpu      : VPU instance
+ * @vsi      : VPU shared information
+ */
+struct vdec_h264_inst {
+	unsigned int num_nalu;
+	struct mtk_vcodec_dec_ctx *ctx;
+	struct mtk_vcodec_mem pred_buf;
+	struct mtk_vcodec_mem mv_buf[H264_MAX_FB_NUM];
+	struct vdec_vpu_inst vpu;
+	struct vdec_h264_vsi *vsi;
+};
+
+static unsigned int get_mv_buf_size(unsigned int width, unsigned int height)
+{
+	return HW_MB_STORE_SZ * (width/MB_UNIT_LEN) * (height/MB_UNIT_LEN);
+}
+
+static int allocate_prediction_buf(struct vdec_h264_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_vdec_err(inst->ctx, "failed to allocate ppl buf");
+		return err;
+	}
+
+	inst->vsi->pred_buf_dma = inst->pred_buf.dma_addr;
+	return 0;
+}
+
+static void free_prediction_buf(struct vdec_h264_inst *inst)
+{
+	struct mtk_vcodec_mem *mem = NULL;
+
+	inst->vsi->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_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);
+
+	for (i = 0; i < H264_MAX_FB_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_vdec_err(inst->ctx, "failed to allocate mv buf");
+			return err;
+		}
+		inst->vsi->mv_buf_dma[i] = mem->dma_addr;
+	}
+
+	return 0;
+}
+
+static void free_mv_buf(struct vdec_h264_inst *inst)
+{
+	int i;
+	struct mtk_vcodec_mem *mem = NULL;
+
+	for (i = 0; i < H264_MAX_FB_NUM; i++) {
+		inst->vsi->mv_buf_dma[i] = 0;
+		mem = &inst->mv_buf[i];
+		if (mem->va)
+			mtk_vcodec_mem_free(inst->ctx, mem);
+	}
+}
+
+static int check_list_validity(struct vdec_h264_inst *inst, bool disp_list)
+{
+	struct h264_ring_fb_list *list;
+
+	list = disp_list ? &inst->vsi->list_disp : &inst->vsi->list_free;
+
+	if (list->count > H264_MAX_FB_NUM ||
+	    list->read_idx >= H264_MAX_FB_NUM ||
+	    list->write_idx >= H264_MAX_FB_NUM) {
+		mtk_vdec_err(inst->ctx, "%s list err: cnt=%d r_idx=%d w_idx=%d",
+			     disp_list ? "disp" : "free", list->count,
+			     list->read_idx, list->write_idx);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void put_fb_to_free(struct vdec_h264_inst *inst, struct vdec_fb *fb)
+{
+	struct h264_ring_fb_list *list;
+
+	if (fb) {
+		if (check_list_validity(inst, false))
+			return;
+
+		list = &inst->vsi->list_free;
+		if (list->count == H264_MAX_FB_NUM) {
+			mtk_vdec_err(inst->ctx, "[FB] put fb free_list full");
+			return;
+		}
+
+		mtk_vdec_debug(inst->ctx, "[FB] put fb into free_list @(%p, %llx)",
+			       fb->base_y.va, (u64)fb->base_y.dma_addr);
+
+		list->fb_list[list->write_idx].vdec_fb_va = (u64)(uintptr_t)fb;
+		list->write_idx = (list->write_idx == H264_MAX_FB_NUM - 1) ?
+				  0 : list->write_idx + 1;
+		list->count++;
+	}
+}
+
+static void get_pic_info(struct vdec_h264_inst *inst,
+			 struct vdec_pic_info *pic)
+{
+	*pic = inst->vsi->pic;
+	mtk_vdec_debug(inst->ctx, "pic(%d, %d), buf(%d, %d)",
+		       pic->pic_w, pic->pic_h, pic->buf_w, pic->buf_h);
+	mtk_vdec_debug(inst->ctx, "fb size: Y(%d), C(%d)", pic->fb_sz[0], pic->fb_sz[1]);
+}
+
+static void get_crop_info(struct vdec_h264_inst *inst, struct v4l2_rect *cr)
+{
+	cr->left = inst->vsi->crop.left;
+	cr->top = inst->vsi->crop.top;
+	cr->width = inst->vsi->crop.width;
+	cr->height = inst->vsi->crop.height;
+
+	mtk_vdec_debug(inst->ctx, "l=%d, t=%d, w=%d, h=%d", cr->left, cr->top,
+		       cr->width, cr->height);
+}
+
+static void get_dpb_size(struct vdec_h264_inst *inst, unsigned int *dpb_sz)
+{
+	*dpb_sz = inst->vsi->dec.dpb_sz;
+	mtk_vdec_debug(inst->ctx, "sz=%d", *dpb_sz);
+}
+
+static int vdec_h264_init(struct mtk_vcodec_dec_ctx *ctx)
+{
+	struct vdec_h264_inst *inst = NULL;
+	int err;
+
+	inst = kzalloc_obj(*inst);
+	if (!inst)
+		return -ENOMEM;
+
+	inst->ctx = ctx;
+
+	inst->vpu.id = IPI_VDEC_H264;
+	inst->vpu.ctx = ctx;
+
+	err = vpu_dec_init(&inst->vpu);
+	if (err) {
+		mtk_vdec_err(ctx, "vdec_h264 init err=%d", err);
+		goto error_free_inst;
+	}
+
+	inst->vsi = (struct vdec_h264_vsi *)inst->vpu.vsi;
+	err = allocate_prediction_buf(inst);
+	if (err)
+		goto error_deinit;
+
+	mtk_vdec_debug(ctx, "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_deinit(void *h_vdec)
+{
+	struct vdec_h264_inst *inst = (struct vdec_h264_inst *)h_vdec;
+
+	vpu_dec_deinit(&inst->vpu);
+	free_prediction_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_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
+			    struct vdec_fb *fb, bool *res_chg)
+{
+	struct vdec_h264_inst *inst = (struct vdec_h264_inst *)h_vdec;
+	struct vdec_vpu_inst *vpu = &inst->vpu;
+	int nal_start_idx = 0;
+	int err = 0;
+	unsigned int nal_start;
+	unsigned int nal_type;
+	unsigned char *buf;
+	unsigned int buf_sz;
+	unsigned int data[2];
+	uint64_t vdec_fb_va = (u64)(uintptr_t)fb;
+	uint64_t y_fb_dma = fb ? (u64)fb->base_y.dma_addr : 0;
+	uint64_t c_fb_dma = fb ? (u64)fb->base_c.dma_addr : 0;
+
+	mtk_vdec_debug(inst->ctx, "+ [%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);
+
+	buf = (unsigned char *)bs->va;
+	buf_sz = bs->size;
+	nal_start_idx = find_start_code(buf, buf_sz);
+	if (nal_start_idx < 0) {
+		mtk_vdec_err(inst->ctx, "invalid nal start code");
+		err = -EIO;
+		goto err_free_fb_out;
+	}
+
+	nal_start = buf[nal_start_idx];
+	nal_type = NAL_TYPE(buf[nal_start_idx]);
+	mtk_vdec_debug(inst->ctx, "\n + NALU[%d] type %d +\n", inst->num_nalu,
+		       nal_type);
+
+	if (nal_type == NAL_H264_PPS) {
+		buf_sz -= nal_start_idx;
+		if (buf_sz > HDR_PARSING_BUF_SZ) {
+			err = -EILSEQ;
+			goto err_free_fb_out;
+		}
+		memcpy(inst->vsi->hdr_buf, buf + nal_start_idx, buf_sz);
+	}
+
+	inst->vsi->dec.bs_dma = (uint64_t)bs->dma_addr;
+	inst->vsi->dec.y_fb_dma = y_fb_dma;
+	inst->vsi->dec.c_fb_dma = c_fb_dma;
+	inst->vsi->dec.vdec_fb_va = vdec_fb_va;
+
+	data[0] = buf_sz;
+	data[1] = nal_start;
+	err = vpu_dec_start(vpu, data, 2);
+	if (err) {
+		if (err > 0 && (DEC_ERR_RET(err) == H264_ERR_NOT_VALID)) {
+			mtk_vdec_err(inst->ctx, "- error bitstream - err = %d -", err);
+			err = -EIO;
+		}
+		goto err_free_fb_out;
+	}
+
+	*res_chg = inst->vsi->dec.resolution_changed;
+	if (*res_chg) {
+		struct vdec_pic_info pic;
+
+		mtk_vdec_debug(inst->ctx, "- resolution changed -");
+		get_pic_info(inst, &pic);
+
+		if (inst->vsi->dec.realloc_mv_buf) {
+			err = alloc_mv_buf(inst, &pic);
+			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, 0);
+		if (err)
+			goto err_free_fb_out;
+
+		vpu_dec_end(vpu);
+	}
+
+	mtk_vdec_debug(inst->ctx, "\n - NALU[%d] type=%d -\n", inst->num_nalu, nal_type);
+	return 0;
+
+err_free_fb_out:
+	put_fb_to_free(inst, fb);
+	mtk_vdec_err(inst->ctx, "\n - NALU[%d] err=%d -\n", inst->num_nalu, err);
+	return err;
+}
+
+static void vdec_h264_get_fb(struct vdec_h264_inst *inst,
+			     struct h264_ring_fb_list *list,
+			     bool disp_list, struct vdec_fb **out_fb)
+{
+	struct vdec_fb *fb;
+
+	if (check_list_validity(inst, disp_list))
+		return;
+
+	if (list->count == 0) {
+		mtk_vdec_debug(inst->ctx, "[FB] there is no %s fb", disp_list ? "disp" : "free");
+		*out_fb = NULL;
+		return;
+	}
+
+	fb = (struct vdec_fb *)
+		(uintptr_t)list->fb_list[list->read_idx].vdec_fb_va;
+	fb->status |= (disp_list ? FB_ST_DISPLAY : FB_ST_FREE);
+
+	*out_fb = fb;
+	mtk_vdec_debug(inst->ctx, "[FB] get %s fb st=%d poc=%d %llx",
+		       disp_list ? "disp" : "free",
+		       fb->status, list->fb_list[list->read_idx].poc,
+		       list->fb_list[list->read_idx].vdec_fb_va);
+
+	list->read_idx = (list->read_idx == H264_MAX_FB_NUM - 1) ?
+			 0 : list->read_idx + 1;
+	list->count--;
+}
+
+static int vdec_h264_get_param(void *h_vdec, enum vdec_get_param_type type,
+			       void *out)
+{
+	struct vdec_h264_inst *inst = (struct vdec_h264_inst *)h_vdec;
+
+	switch (type) {
+	case GET_PARAM_DISP_FRAME_BUFFER:
+		vdec_h264_get_fb(inst, &inst->vsi->list_disp, true, out);
+		break;
+
+	case GET_PARAM_FREE_FRAME_BUFFER:
+		vdec_h264_get_fb(inst, &inst->vsi->list_free, false, out);
+		break;
+
+	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_vdec_err(inst->ctx, "invalid get parameter type=%d", type);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+const struct vdec_common_if vdec_h264_if = {
+	.init		= vdec_h264_init,
+	.decode		= vdec_h264_decode,
+	.get_param	= vdec_h264_get_param,
+	.deinit		= vdec_h264_deinit,
+};

linux-7.2.3/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_common.c

@@ -0,0 +1,322 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ * Author: Yunfei Dong <yunfei.dong@mediatek.com>
+ */
+
+#include "vdec_h264_req_common.h"
+
+/* 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; }
+
+void mtk_vdec_h264_get_ref_list(u8 *ref_list,
+				const struct v4l2_h264_reference *v4l2_ref_list,
+				int num_valid)
+{
+	u32 i;
+
+	/*
+	 * TODO The firmware does not support field decoding. Future
+	 * implementation must use v4l2_ref_list[i].fields to obtain
+	 * the reference field parity.
+	 */
+
+	for (i = 0; i < num_valid; i++)
+		ref_list[i] = v4l2_ref_list[i].index;
+
+	/*
+	 * The firmware expects unused reflist entries to have the value 0x20.
+	 */
+	memset(&ref_list[num_valid], 0x20, 32 - num_valid);
+}
+
+void *mtk_vdec_h264_get_ctrl_ptr(struct mtk_vcodec_dec_ctx *ctx, int id)
+{
+	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(&ctx->ctrl_hdl, id);
+
+	if (!ctrl)
+		return ERR_PTR(-EINVAL);
+
+	return ctrl->p_cur.p;
+}
+
+void mtk_vdec_h264_fill_dpb_info(struct mtk_vcodec_dec_ctx *ctx,
+				 struct slice_api_h264_decode_param *decode_params,
+				 struct mtk_h264_dpb_info *h264_dpb_info)
+{
+	const struct slice_h264_dpb_entry *dpb;
+	struct vb2_queue *vq;
+	struct vb2_buffer *vb;
+	struct vb2_v4l2_buffer *vb2_v4l2;
+	int index;
+
+	vq = v4l2_m2m_get_vq(ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
+
+	for (index = 0; index < V4L2_H264_NUM_DPB_ENTRIES; index++) {
+		dpb = &decode_params->dpb[index];
+		if (!(dpb->flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE)) {
+			h264_dpb_info[index].reference_flag = 0;
+			continue;
+		}
+
+		vb = vb2_find_buffer(vq, dpb->reference_ts);
+		if (!vb) {
+			dev_err(&ctx->dev->plat_dev->dev,
+				"Reference invalid: dpb_index(%d) 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))
+			h264_dpb_info[index].reference_flag = 1;
+		else
+			h264_dpb_info[index].reference_flag = 2;
+
+		vb2_v4l2 = container_of(vb, struct vb2_v4l2_buffer, vb2_buf);
+		h264_dpb_info[index].field = vb2_v4l2->field;
+
+		h264_dpb_info[index].y_dma_addr =
+			vb2_dma_contig_plane_dma_addr(vb, 0);
+		if (ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2)
+			h264_dpb_info[index].c_dma_addr =
+				vb2_dma_contig_plane_dma_addr(vb, 1);
+		else
+			h264_dpb_info[index].c_dma_addr =
+				h264_dpb_info[index].y_dma_addr +
+				ctx->picinfo.fb_sz[0];
+	}
+}
+
+void mtk_vdec_h264_copy_sps_params(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);
+}
+
+void mtk_vdec_h264_copy_pps_params(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_SCALING_MATRIX_PRESENT);
+}
+
+void mtk_vdec_h264_copy_slice_hd_params(struct mtk_h264_slice_hd_param *dst_param,
+					const struct v4l2_ctrl_h264_slice_params *src_param,
+					const struct v4l2_ctrl_h264_decode_params *dec_param)
+{
+	int temp;
+
+	GET_MTK_VDEC_PARAM(first_mb_in_slice);
+	GET_MTK_VDEC_PARAM(slice_type);
+	GET_MTK_VDEC_PARAM(cabac_init_idc);
+	GET_MTK_VDEC_PARAM(slice_qp_delta);
+	GET_MTK_VDEC_PARAM(disable_deblocking_filter_idc);
+	GET_MTK_VDEC_PARAM(slice_alpha_c0_offset_div2);
+	GET_MTK_VDEC_PARAM(slice_beta_offset_div2);
+	GET_MTK_VDEC_PARAM(num_ref_idx_l0_active_minus1);
+	GET_MTK_VDEC_PARAM(num_ref_idx_l1_active_minus1);
+
+	dst_param->frame_num = dec_param->frame_num;
+	dst_param->pic_order_cnt_lsb = dec_param->pic_order_cnt_lsb;
+
+	dst_param->delta_pic_order_cnt_bottom =
+		dec_param->delta_pic_order_cnt_bottom;
+	dst_param->delta_pic_order_cnt0 =
+		dec_param->delta_pic_order_cnt0;
+	dst_param->delta_pic_order_cnt1 =
+		dec_param->delta_pic_order_cnt1;
+
+	temp = dec_param->flags & V4L2_H264_DECODE_PARAM_FLAG_FIELD_PIC;
+	dst_param->field_pic_flag = temp ? 1 : 0;
+
+	temp = dec_param->flags & V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD;
+	dst_param->bottom_field_flag = temp ? 1 : 0;
+
+	GET_MTK_VDEC_FLAG(direct_spatial_mv_pred_flag,
+			  V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED);
+}
+
+void mtk_vdec_h264_copy_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));
+}
+
+void
+mtk_vdec_h264_copy_decode_params(struct slice_api_h264_decode_param *dst_params,
+				 const struct v4l2_ctrl_h264_decode_params *src_params,
+				 const struct v4l2_h264_dpb_entry dpb[V4L2_H264_NUM_DPB_ENTRIES])
+{
+	struct slice_h264_dpb_entry *dst_entry;
+	const struct v4l2_h264_dpb_entry *src_entry;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(dst_params->dpb); i++) {
+		dst_entry = &dst_params->dpb[i];
+		src_entry = &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;
+	}
+
+	/* num_slices is a leftover from the old H.264 support and is ignored
+	 * by the firmware.
+	 */
+	dst_params->num_slices = 0;
+	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 mtk_vdec_h264_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.
+ */
+void mtk_vdec_h264_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 (!mtk_vdec_h264_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);
+	}
+}
+
+unsigned int mtk_vdec_h264_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;
+}
+
+int mtk_vdec_h264_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;
+}

linux-7.2.3/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_common.h

@@ -0,0 +1,280 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ * Author: Yunfei Dong <yunfei.dong@mediatek.com>
+ */
+
+#ifndef _VDEC_H264_REQ_COMMON_H_
+#define _VDEC_H264_REQ_COMMON_H_
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <media/v4l2-h264.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "../mtk_vcodec_dec_drv.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
+
+/* 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 mtk_h264_slice_hd_param  - parameters for slice header
+ */
+struct mtk_h264_slice_hd_param {
+	unsigned int first_mb_in_slice;
+	unsigned int field_pic_flag;
+	unsigned int slice_type;
+	unsigned int frame_num;
+	int pic_order_cnt_lsb;
+	int delta_pic_order_cnt_bottom;
+	unsigned int bottom_field_flag;
+	unsigned int direct_spatial_mv_pred_flag;
+	int delta_pic_order_cnt0;
+	int delta_pic_order_cnt1;
+	unsigned int cabac_init_idc;
+	int slice_qp_delta;
+	unsigned int disable_deblocking_filter_idc;
+	int slice_alpha_c0_offset_div2;
+	int slice_beta_offset_div2;
+	unsigned int num_ref_idx_l0_active_minus1;
+	unsigned int num_ref_idx_l1_active_minus1;
+	unsigned int reserved;
+};
+
+/*
+ * struct slice_api_h264_scaling_matrix  - parameters for scaling list
+ */
+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  - each dpb information
+ */
+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;
+};
+
+/*
+ * struct slice_api_h264_decode_param - parameters for decode.
+ */
+struct slice_api_h264_decode_param {
+	struct slice_h264_dpb_entry dpb[V4L2_H264_NUM_DPB_ENTRIES];
+	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;
+};
+
+/**
+ * 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 {
+	u64 vdec_fb_va;
+	u64 y_fb_dma;
+	u64 c_fb_dma;
+	s32 poc;
+	u32 reserved;
+};
+
+/**
+ * mtk_vdec_h264_get_ref_list - translate V4L2 reference list
+ *
+ * @ref_list:		Mediatek reference picture list
+ * @v4l2_ref_list:	V4L2 reference picture list
+ * @num_valid:		used reference number
+ */
+void mtk_vdec_h264_get_ref_list(u8 *ref_list,
+				const struct v4l2_h264_reference *v4l2_ref_list,
+				int num_valid);
+
+/**
+ * mtk_vdec_h264_get_ctrl_ptr - get each CID control address.
+ *
+ * @ctx:	v4l2 ctx
+ * @id:	CID control ID
+ *
+ * Return: returns CID ctrl address.
+ */
+void *mtk_vdec_h264_get_ctrl_ptr(struct mtk_vcodec_dec_ctx *ctx, int id);
+
+/**
+ * mtk_vdec_h264_fill_dpb_info - Fill the decoded picture buffer info
+ *
+ * @ctx:		v4l2 ctx
+ * @decode_params:	slice decode params
+ * @h264_dpb_info:	dpb buffer information
+ */
+void mtk_vdec_h264_fill_dpb_info(struct mtk_vcodec_dec_ctx *ctx,
+				 struct slice_api_h264_decode_param *decode_params,
+				 struct mtk_h264_dpb_info *h264_dpb_info);
+
+/**
+ * mtk_vdec_h264_copy_sps_params - get sps params.
+ *
+ * @dst_param:	sps params for hw decoder
+ * @src_param:	sps params from user driver
+ */
+void mtk_vdec_h264_copy_sps_params(struct mtk_h264_sps_param *dst_param,
+				   const struct v4l2_ctrl_h264_sps *src_param);
+
+/**
+ * mtk_vdec_h264_copy_pps_params - get pps params.
+ *
+ * @dst_param:	pps params for hw decoder
+ * @src_param:	pps params from user driver
+ */
+void mtk_vdec_h264_copy_pps_params(struct mtk_h264_pps_param *dst_param,
+				   const struct v4l2_ctrl_h264_pps *src_param);
+
+/**
+ * mtk_vdec_h264_copy_slice_hd_params - get slice header params.
+ *
+ * @dst_param:	slice params for hw decoder
+ * @src_param:	slice params from user driver
+ * @dec_param:	decode params from user driver
+ */
+void mtk_vdec_h264_copy_slice_hd_params(struct mtk_h264_slice_hd_param *dst_param,
+					const struct v4l2_ctrl_h264_slice_params *src_param,
+					const struct v4l2_ctrl_h264_decode_params *dec_param);
+
+/**
+ * mtk_vdec_h264_copy_scaling_matrix - Copy scaling matrix from a control to the driver
+ *
+ * @dst_matrix:	scaling list params for the HW decoder
+ * @src_matrix:	scaling list params from a V4L2 control
+ *
+ * This function is used to copy the scaling matrix from a
+ * v4l2 control into the slice parameters for a decode.
+ */
+void mtk_vdec_h264_copy_scaling_matrix(struct slice_api_h264_scaling_matrix *dst_matrix,
+				       const struct v4l2_ctrl_h264_scaling_matrix *src_matrix);
+
+/**
+ * mtk_vdec_h264_copy_decode_params - get decode params.
+ *
+ * @dst_params:	dst params for hw decoder
+ * @src_params:	decode params from user driver
+ * @dpb:		dpb information
+ */
+void
+mtk_vdec_h264_copy_decode_params(struct slice_api_h264_decode_param *dst_params,
+				 const struct v4l2_ctrl_h264_decode_params *src_params,
+				 const struct v4l2_h264_dpb_entry dpb[V4L2_H264_NUM_DPB_ENTRIES]);
+
+/**
+ * mtk_vdec_h264_update_dpb - update dpb list.
+ *
+ * @dec_param:	v4l2 control decode params
+ * @dpb:	dpb entry informaton
+ */
+void mtk_vdec_h264_update_dpb(const struct v4l2_ctrl_h264_decode_params *dec_param,
+			      struct v4l2_h264_dpb_entry *dpb);
+
+/**
+ * mtk_vdec_h264_find_start_code - find h264 start code using sofeware.
+ *
+ * @data:	input buffer address
+ * @data_sz:	input buffer size
+ *
+ * Return: returns start code position.
+ */
+int mtk_vdec_h264_find_start_code(unsigned char *data, unsigned int data_sz);
+
+/**
+ * mtk_vdec_h264_get_mv_buf_size - get mv buffer size.
+ *
+ * @width:	picture width
+ * @height:	picture height
+ *
+ * Return: returns mv buffer size.
+ */
+unsigned int mtk_vdec_h264_get_mv_buf_size(unsigned int width, unsigned int height);
+
+#endif

linux-7.2.3/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_if.c

@@ -0,0 +1,449 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-h264.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "../mtk_vcodec_dec.h"
+#include "../../common/mtk_vcodec_intr.h"
+#include "../vdec_drv_base.h"
+#include "../vdec_drv_if.h"
+#include "../vdec_vpu_if.h"
+#include "vdec_h264_req_common.h"
+
+/*
+ * 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 vdec_h264_dec_info - decode information
+ * @dpb_sz		: decoding picture buffer size
+ * @resolution_changed  : flag to notify that a resolution change happened
+ * @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 {
+	u32 dpb_sz;
+	u32 resolution_changed;
+	u32 realloc_mv_buf;
+	u32 cap_num_planes;
+	u64 bs_dma;
+	u64 y_fb_dma;
+	u64 c_fb_dma;
+	u64 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 prediction 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)
+ * @h264_slice_params : the parameters that hardware use to decode
+ */
+struct vdec_h264_vsi {
+	u64 pred_buf_dma;
+	u64 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_dec_ctx
+ * @pred_buf : HW working prediction buffer
+ * @mv_buf   : HW working motion vector buffer
+ * @vpu      : VPU instance
+ * @vsi_ctx  : Local VSI data for this decoding context
+ * @h264_slice_param : the parameters that hardware use to decode
+ * @dpb : decoded picture buffer used to store reference buffer information
+ */
+struct vdec_h264_slice_inst {
+	unsigned int num_nalu;
+	struct mtk_vcodec_dec_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 int get_vdec_decode_parameters(struct vdec_h264_slice_inst *inst)
+{
+	const struct v4l2_ctrl_h264_decode_params *dec_params;
+	const struct v4l2_ctrl_h264_sps *sps;
+	const struct v4l2_ctrl_h264_pps *pps;
+	const struct v4l2_ctrl_h264_scaling_matrix *scaling_matrix;
+	struct mtk_h264_dec_slice_param *slice_param = &inst->h264_slice_param;
+	struct v4l2_h264_reflist_builder reflist_builder;
+	struct v4l2_h264_reference v4l2_p0_reflist[V4L2_H264_REF_LIST_LEN];
+	struct v4l2_h264_reference v4l2_b0_reflist[V4L2_H264_REF_LIST_LEN];
+	struct v4l2_h264_reference v4l2_b1_reflist[V4L2_H264_REF_LIST_LEN];
+	u8 *p0_reflist = slice_param->decode_params.ref_pic_list_p0;
+	u8 *b0_reflist = slice_param->decode_params.ref_pic_list_b0;
+	u8 *b1_reflist = slice_param->decode_params.ref_pic_list_b1;
+
+	dec_params =
+		mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_DECODE_PARAMS);
+	if (IS_ERR(dec_params))
+		return PTR_ERR(dec_params);
+
+	sps = mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_SPS);
+	if (IS_ERR(sps))
+		return PTR_ERR(sps);
+
+	pps = mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_PPS);
+	if (IS_ERR(pps))
+		return PTR_ERR(pps);
+
+	scaling_matrix =
+		mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_SCALING_MATRIX);
+	if (IS_ERR(scaling_matrix))
+		return PTR_ERR(scaling_matrix);
+
+	mtk_vdec_h264_update_dpb(dec_params, inst->dpb);
+
+	mtk_vdec_h264_copy_sps_params(&slice_param->sps, sps);
+	mtk_vdec_h264_copy_pps_params(&slice_param->pps, pps);
+	mtk_vdec_h264_copy_scaling_matrix(&slice_param->scaling_matrix, scaling_matrix);
+	mtk_vdec_h264_copy_decode_params(&slice_param->decode_params,
+					 dec_params, inst->dpb);
+	mtk_vdec_h264_fill_dpb_info(inst->ctx, &slice_param->decode_params,
+				    slice_param->h264_dpb_info);
+
+	/* Build the reference lists */
+	v4l2_h264_init_reflist_builder(&reflist_builder, dec_params, sps,
+				       inst->dpb);
+	v4l2_h264_build_p_ref_list(&reflist_builder, v4l2_p0_reflist);
+	v4l2_h264_build_b_ref_lists(&reflist_builder, v4l2_b0_reflist,
+				    v4l2_b1_reflist);
+
+	/* Adapt the built lists to the firmware's expectations */
+	mtk_vdec_h264_get_ref_list(p0_reflist, v4l2_p0_reflist, reflist_builder.num_valid);
+	mtk_vdec_h264_get_ref_list(b0_reflist, v4l2_b0_reflist, reflist_builder.num_valid);
+	mtk_vdec_h264_get_ref_list(b1_reflist, v4l2_b1_reflist, reflist_builder.num_valid);
+
+	memcpy(&inst->vsi_ctx.h264_slice_params, slice_param,
+	       sizeof(inst->vsi_ctx.h264_slice_params));
+
+	return 0;
+}
+
+static int allocate_prediction_buf(struct vdec_h264_slice_inst *inst)
+{
+	int err;
+
+	inst->pred_buf.size = BUF_PREDICTION_SZ;
+	err = mtk_vcodec_mem_alloc(inst->ctx, &inst->pred_buf);
+	if (err) {
+		mtk_vdec_err(inst->ctx, "failed to allocate ppl buf");
+		return err;
+	}
+
+	inst->vsi_ctx.pred_buf_dma = inst->pred_buf.dma_addr;
+	return 0;
+}
+
+static void free_prediction_buf(struct vdec_h264_slice_inst *inst)
+{
+	struct mtk_vcodec_mem *mem = &inst->pred_buf;
+
+	inst->vsi_ctx.pred_buf_dma = 0;
+	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 = mtk_vdec_h264_get_mv_buf_size(pic->buf_w, pic->buf_h);
+
+	mtk_v4l2_vdec_dbg(3, inst->ctx, "size = 0x%x", 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_vdec_err(inst->ctx, "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;
+
+	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_dec_ctx *ctx = inst->ctx;
+
+	ctx->picinfo.buf_w = ALIGN(ctx->picinfo.pic_w, VCODEC_DEC_ALIGNED_64);
+	ctx->picinfo.buf_h = ALIGN(ctx->picinfo.pic_h, VCODEC_DEC_ALIGNED_64);
+	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_vdec_debug(inst->ctx, "pic(%d, %d), buf(%d, %d)",
+		       ctx->picinfo.pic_w, ctx->picinfo.pic_h,
+		       ctx->picinfo.buf_w, ctx->picinfo.buf_h);
+	mtk_vdec_debug(inst->ctx, "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_vdec_dbg(1, inst->ctx, "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_vdec_debug(inst->ctx, "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_vdec_debug(inst->ctx, "sz=%d", *dpb_sz);
+}
+
+static int vdec_h264_slice_init(struct mtk_vcodec_dec_ctx *ctx)
+{
+	struct vdec_h264_slice_inst *inst;
+	int err;
+
+	inst = kzalloc_obj(*inst);
+	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_vdec_err(ctx, "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_prediction_buf(inst);
+	if (err)
+		goto error_deinit;
+
+	mtk_vdec_debug(ctx, "struct size = %zu,%zu,%zu,%zu\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_vdec_debug(ctx, "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 = h_vdec;
+
+	vpu_dec_deinit(&inst->vpu);
+	free_prediction_buf(inst);
+	free_mv_buf(inst);
+
+	kfree(inst);
+}
+
+static int vdec_h264_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
+				  struct vdec_fb *unused, bool *res_chg)
+{
+	struct vdec_h264_slice_inst *inst = h_vdec;
+	const struct v4l2_ctrl_h264_decode_params *dec_params =
+		mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_DECODE_PARAMS);
+	struct vdec_vpu_inst *vpu = &inst->vpu;
+	struct mtk_video_dec_buf *src_buf_info;
+	struct mtk_video_dec_buf *dst_buf_info;
+	struct vdec_fb *fb;
+	u32 data[2];
+	u64 y_fb_dma;
+	u64 c_fb_dma;
+	int err;
+
+	inst->num_nalu++;
+	/* bs NULL means flush decoder */
+	if (!bs)
+		return vpu_dec_reset(vpu);
+
+	fb = inst->ctx->dev->vdec_pdata->get_cap_buffer(inst->ctx);
+	if (!fb) {
+		mtk_vdec_err(inst->ctx, "fb buffer is NULL");
+		return -ENOMEM;
+	}
+
+	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->base_y.dma_addr;
+	c_fb_dma = fb->base_c.dma_addr;
+
+	mtk_vdec_debug(inst->ctx, "+ [%d] FB y_dma=%llx c_dma=%llx va=%p",
+		       inst->num_nalu, y_fb_dma, c_fb_dma, fb);
+
+	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;
+
+	v4l2_m2m_buf_copy_metadata(&src_buf_info->m2m_buf.vb,
+				   &dst_buf_info->m2m_buf.vb);
+	err = get_vdec_decode_parameters(inst);
+	if (err)
+		goto err_free_fb_out;
+
+	data[0] = bs->size;
+	/*
+	 * Reconstruct the first byte of the NAL unit, as the firmware requests
+	 * that information to be passed even though it is present in the stream
+	 * itself...
+	 */
+	data[1] = (dec_params->nal_ref_idc << 5) |
+		  ((dec_params->flags & V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC)
+			? 0x5 : 0x1);
+
+	*res_chg = inst->vsi_ctx.dec.resolution_changed;
+	if (*res_chg) {
+		mtk_vdec_debug(inst->ctx, "- 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;
+
+	/* wait decoder done interrupt */
+	err = mtk_vcodec_wait_for_done_ctx(inst->ctx,
+					   MTK_INST_IRQ_RECEIVED,
+					   WAIT_INTR_TIMEOUT_MS, 0);
+	if (err)
+		goto err_free_fb_out;
+	vpu_dec_end(vpu);
+
+	memcpy(&inst->vsi_ctx, inst->vpu.vsi, sizeof(inst->vsi_ctx));
+	mtk_vdec_debug(inst->ctx, "\n - NALU[%d]", inst->num_nalu);
+	return 0;
+
+err_free_fb_out:
+	mtk_vdec_err(inst->ctx, "\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 = 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_vdec_err(inst->ctx, "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,
+};

linux-7.2.3/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp8_if.c

@@ -0,0 +1,608 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2016 MediaTek Inc.
+ * Author: Jungchang Tsao <jungchang.tsao@mediatek.com>
+ *	   PC Chen <pc.chen@mediatek.com>
+ */
+
+#include <linux/slab.h>
+#include "../vdec_drv_if.h"
+#include "../mtk_vcodec_dec.h"
+#include "../../common/mtk_vcodec_intr.h"
+#include "../vdec_vpu_if.h"
+#include "../vdec_drv_base.h"
+
+/* Decoding picture buffer size (3 reference frames plus current frame) */
+#define VP8_DPB_SIZE			4
+
+/* HW working buffer size (bytes) */
+#define VP8_WORKING_BUF_SZ		(45 * 4096)
+
+/* HW control register address */
+#define VP8_SEGID_DRAM_ADDR		0x3c
+#define VP8_HW_VLD_ADDR			0x93C
+#define VP8_HW_VLD_VALUE		0x940
+#define VP8_BSASET			0x100
+#define VP8_BSDSET			0x104
+#define VP8_RW_CKEN_SET			0x0
+#define VP8_RW_DCM_CON			0x18
+#define VP8_WO_VLD_SRST			0x108
+#define VP8_RW_MISC_SYS_SEL		0x84
+#define VP8_RW_MISC_SPEC_CON		0xC8
+#define VP8_WO_VLD_SRST			0x108
+#define VP8_RW_VP8_CTRL			0xA4
+#define VP8_RW_MISC_DCM_CON		0xEC
+#define VP8_RW_MISC_SRST		0xF4
+#define VP8_RW_MISC_FUNC_CON		0xCC
+
+#define VP8_MAX_FRM_BUF_NUM		5
+#define VP8_MAX_FRM_BUF_NODE_NUM	(VP8_MAX_FRM_BUF_NUM * 2)
+
+/* required buffer size (bytes) to store decode information */
+#define VP8_HW_SEGMENT_DATA_SZ		272
+#define VP8_HW_SEGMENT_UINT		4
+
+#define VP8_DEC_TABLE_PROC_LOOP		96
+#define VP8_DEC_TABLE_UNIT		3
+#define VP8_DEC_TABLE_SZ		300
+#define VP8_DEC_TABLE_OFFSET		2
+#define VP8_DEC_TABLE_RW_UNIT		4
+
+/**
+ * struct vdec_vp8_dec_info - decode misc information
+ * @working_buf_dma   : working buffer dma address
+ * @prev_y_dma        : previous decoded frame buffer Y plane address
+ * @cur_y_fb_dma      : current plane Y frame buffer dma address
+ * @cur_c_fb_dma      : current plane C frame buffer dma address
+ * @bs_dma	      : bitstream dma address
+ * @bs_sz	      : bitstream size
+ * @resolution_changed: resolution change flag 1 - changed,  0 - not changed
+ * @show_frame	      : display this frame or not
+ * @wait_key_frame    : wait key frame coming
+ */
+struct vdec_vp8_dec_info {
+	uint64_t working_buf_dma;
+	uint64_t prev_y_dma;
+	uint64_t cur_y_fb_dma;
+	uint64_t cur_c_fb_dma;
+	uint64_t bs_dma;
+	uint32_t bs_sz;
+	uint32_t resolution_changed;
+	uint32_t show_frame;
+	uint32_t wait_key_frame;
+};
+
+/**
+ * struct vdec_vp8_vsi - VPU shared information
+ * @dec			: decoding information
+ * @pic			: picture information
+ * @dec_table		: decoder coefficient table
+ * @segment_buf		: segmentation buffer
+ * @load_data		: flag to indicate reload decode data
+ */
+struct vdec_vp8_vsi {
+	struct vdec_vp8_dec_info dec;
+	struct vdec_pic_info pic;
+	uint32_t dec_table[VP8_DEC_TABLE_SZ];
+	uint32_t segment_buf[VP8_HW_SEGMENT_DATA_SZ][VP8_HW_SEGMENT_UINT];
+	uint32_t load_data;
+};
+
+/**
+ * struct vdec_vp8_hw_reg_base - HW register base
+ * @misc	: base address for misc
+ * @ld		: base address for ld
+ * @top		: base address for top
+ * @cm		: base address for cm
+ * @hwd		: base address for hwd
+ * @hwb		: base address for hwb
+ */
+struct vdec_vp8_hw_reg_base {
+	void __iomem *misc;
+	void __iomem *ld;
+	void __iomem *top;
+	void __iomem *cm;
+	void __iomem *hwd;
+	void __iomem *hwb;
+};
+
+/**
+ * struct vdec_vp8_vpu_inst - VPU instance for VP8 decode
+ * @wq_hd	: Wait queue to wait VPU message ack
+ * @signaled	: 1 - Host has received ack message from VPU, 0 - not received
+ * @failure	: VPU execution result status 0 - success, others - fail
+ * @inst_addr	: VPU decoder instance address
+ */
+struct vdec_vp8_vpu_inst {
+	wait_queue_head_t wq_hd;
+	int signaled;
+	int failure;
+	uint32_t inst_addr;
+};
+
+/* frame buffer (fb) list
+ * [available_fb_node_list]  - decode fb are initialized to 0 and populated in
+ * [fb_use_list]  - fb is set after decode and is moved to this list
+ * [fb_free_list] - fb is not needed for reference will be moved from
+ *		     [fb_use_list] to [fb_free_list] and
+ *		     once user remove fb from [fb_free_list],
+ *		     it is circulated back to [available_fb_node_list]
+ * [fb_disp_list] - fb is set after decode and is moved to this list
+ *                   once user remove fb from [fb_disp_list] it is
+ *                   circulated back to [available_fb_node_list]
+ */
+
+/**
+ * struct vdec_vp8_inst - VP8 decoder instance
+ * @cur_fb		   : current frame buffer
+ * @dec_fb		   : decode frame buffer node
+ * @available_fb_node_list : list to store available frame buffer node
+ * @fb_use_list		   : list to store frame buffer in use
+ * @fb_free_list	   : list to store free frame buffer
+ * @fb_disp_list	   : list to store display ready frame buffer
+ * @working_buf		   : HW decoder working buffer
+ * @reg_base		   : HW register base address
+ * @frm_cnt		   : decode frame count
+ * @ctx			   : V4L2 context
+ * @vpu			   : VPU instance for decoder
+ * @vsi			   : VPU share information
+ */
+struct vdec_vp8_inst {
+	struct vdec_fb *cur_fb;
+	struct vdec_fb_node dec_fb[VP8_MAX_FRM_BUF_NODE_NUM];
+	struct list_head available_fb_node_list;
+	struct list_head fb_use_list;
+	struct list_head fb_free_list;
+	struct list_head fb_disp_list;
+	struct mtk_vcodec_mem working_buf;
+	struct vdec_vp8_hw_reg_base reg_base;
+	unsigned int frm_cnt;
+	struct mtk_vcodec_dec_ctx *ctx;
+	struct vdec_vpu_inst vpu;
+	struct vdec_vp8_vsi *vsi;
+};
+
+static void get_hw_reg_base(struct vdec_vp8_inst *inst)
+{
+	void __iomem **reg_base = inst->ctx->dev->reg_base;
+
+	inst->reg_base.top = mtk_vcodec_get_reg_addr(reg_base, VDEC_TOP);
+	inst->reg_base.cm = mtk_vcodec_get_reg_addr(reg_base, VDEC_CM);
+	inst->reg_base.hwd = mtk_vcodec_get_reg_addr(reg_base, VDEC_HWD);
+	inst->reg_base.misc = mtk_vcodec_get_reg_addr(reg_base, VDEC_MISC);
+	inst->reg_base.ld = mtk_vcodec_get_reg_addr(reg_base, VDEC_LD);
+	inst->reg_base.hwb = mtk_vcodec_get_reg_addr(reg_base, VDEC_HWB);
+}
+
+static void write_hw_segmentation_data(struct vdec_vp8_inst *inst)
+{
+	int i, j;
+	u32 seg_id_addr;
+	u32 val;
+	void __iomem *cm = inst->reg_base.cm;
+	struct vdec_vp8_vsi *vsi = inst->vsi;
+
+	seg_id_addr = readl(inst->reg_base.top + VP8_SEGID_DRAM_ADDR) >> 4;
+
+	for (i = 0; i < ARRAY_SIZE(vsi->segment_buf); i++) {
+		for (j = ARRAY_SIZE(vsi->segment_buf[i]) - 1; j >= 0; j--) {
+			val = (1 << 16) + ((seg_id_addr + i) << 2) + j;
+			writel(val, cm + VP8_HW_VLD_ADDR);
+
+			val = vsi->segment_buf[i][j];
+			writel(val, cm + VP8_HW_VLD_VALUE);
+		}
+	}
+}
+
+static void read_hw_segmentation_data(struct vdec_vp8_inst *inst)
+{
+	int i, j;
+	u32 seg_id_addr;
+	u32 val;
+	void __iomem *cm = inst->reg_base.cm;
+	struct vdec_vp8_vsi *vsi = inst->vsi;
+
+	seg_id_addr = readl(inst->reg_base.top + VP8_SEGID_DRAM_ADDR) >> 4;
+
+	for (i = 0; i < ARRAY_SIZE(vsi->segment_buf); i++) {
+		for (j = ARRAY_SIZE(vsi->segment_buf[i]) - 1; j >= 0; j--) {
+			val = ((seg_id_addr + i) << 2) + j;
+			writel(val, cm + VP8_HW_VLD_ADDR);
+
+			val = readl(cm + VP8_HW_VLD_VALUE);
+			vsi->segment_buf[i][j] = val;
+		}
+	}
+}
+
+/* reset HW and enable HW read/write data function */
+static void enable_hw_rw_function(struct vdec_vp8_inst *inst)
+{
+	u32 val = 0;
+	void __iomem *misc = inst->reg_base.misc;
+	void __iomem *ld = inst->reg_base.ld;
+	void __iomem *hwb = inst->reg_base.hwb;
+	void __iomem *hwd = inst->reg_base.hwd;
+
+	mtk_vcodec_write_vdecsys(inst->ctx, VP8_RW_CKEN_SET, 0x1);
+	writel(0x101, ld + VP8_WO_VLD_SRST);
+	writel(0x101, hwb + VP8_WO_VLD_SRST);
+
+	mtk_vcodec_write_vdecsys(inst->ctx, 0, 0x1);
+	val = readl(misc + VP8_RW_MISC_SRST);
+	writel((val & 0xFFFFFFFE), misc + VP8_RW_MISC_SRST);
+
+	writel(0x1, misc + VP8_RW_MISC_SYS_SEL);
+	writel(0x17F, misc + VP8_RW_MISC_SPEC_CON);
+	writel(0x71201100, misc + VP8_RW_MISC_FUNC_CON);
+	writel(0x0, ld + VP8_WO_VLD_SRST);
+	writel(0x0, hwb + VP8_WO_VLD_SRST);
+	mtk_vcodec_write_vdecsys(inst->ctx, VP8_RW_DCM_CON, 0x1);
+	writel(0x1, misc + VP8_RW_MISC_DCM_CON);
+	writel(0x1, hwd + VP8_RW_VP8_CTRL);
+}
+
+static void store_dec_table(struct vdec_vp8_inst *inst)
+{
+	int i, j;
+	u32 addr = 0, val = 0;
+	void __iomem *hwd = inst->reg_base.hwd;
+	u32 *p = &inst->vsi->dec_table[VP8_DEC_TABLE_OFFSET];
+
+	for (i = 0; i < VP8_DEC_TABLE_PROC_LOOP; i++) {
+		writel(addr, hwd + VP8_BSASET);
+		for (j = 0; j < VP8_DEC_TABLE_UNIT ; j++) {
+			val = *p++;
+			writel(val, hwd + VP8_BSDSET);
+		}
+		addr += VP8_DEC_TABLE_RW_UNIT;
+	}
+}
+
+static void load_dec_table(struct vdec_vp8_inst *inst)
+{
+	int i;
+	u32 addr = 0;
+	u32 *p = &inst->vsi->dec_table[VP8_DEC_TABLE_OFFSET];
+	void __iomem *hwd = inst->reg_base.hwd;
+
+	for (i = 0; i < VP8_DEC_TABLE_PROC_LOOP; i++) {
+		writel(addr, hwd + VP8_BSASET);
+		/* read total 11 bytes */
+		*p++ = readl(hwd + VP8_BSDSET);
+		*p++ = readl(hwd + VP8_BSDSET);
+		*p++ = readl(hwd + VP8_BSDSET) & 0xFFFFFF;
+		addr += VP8_DEC_TABLE_RW_UNIT;
+	}
+}
+
+static void get_pic_info(struct vdec_vp8_inst *inst, struct vdec_pic_info *pic)
+{
+	*pic = inst->vsi->pic;
+
+	mtk_vdec_debug(inst->ctx, "pic(%d, %d), buf(%d, %d)",
+		       pic->pic_w, pic->pic_h, pic->buf_w, pic->buf_h);
+	mtk_vdec_debug(inst->ctx, "fb size: Y(%d), C(%d)",
+		       pic->fb_sz[0], pic->fb_sz[1]);
+}
+
+static void vp8_dec_finish(struct vdec_vp8_inst *inst)
+{
+	struct vdec_fb_node *node;
+	uint64_t prev_y_dma = inst->vsi->dec.prev_y_dma;
+
+	mtk_vdec_debug(inst->ctx, "prev fb base dma=%llx", prev_y_dma);
+
+	/* put last decode ok frame to fb_free_list */
+	if (prev_y_dma != 0) {
+		list_for_each_entry(node, &inst->fb_use_list, list) {
+			struct vdec_fb *fb = (struct vdec_fb *)node->fb;
+
+			if (prev_y_dma == (uint64_t)fb->base_y.dma_addr) {
+				list_move_tail(&node->list,
+					       &inst->fb_free_list);
+				break;
+			}
+		}
+	}
+
+	/* available_fb_node_list -> fb_use_list */
+	node = list_first_entry(&inst->available_fb_node_list,
+				struct vdec_fb_node, list);
+	node->fb = inst->cur_fb;
+	list_move_tail(&node->list, &inst->fb_use_list);
+
+	/* available_fb_node_list -> fb_disp_list */
+	if (inst->vsi->dec.show_frame) {
+		node = list_first_entry(&inst->available_fb_node_list,
+					struct vdec_fb_node, list);
+		node->fb = inst->cur_fb;
+		list_move_tail(&node->list, &inst->fb_disp_list);
+	}
+}
+
+static void move_fb_list_use_to_free(struct vdec_vp8_inst *inst)
+{
+	struct vdec_fb_node *node, *tmp;
+
+	list_for_each_entry_safe(node, tmp, &inst->fb_use_list, list)
+		list_move_tail(&node->list, &inst->fb_free_list);
+}
+
+static void init_list(struct vdec_vp8_inst *inst)
+{
+	int i;
+
+	INIT_LIST_HEAD(&inst->available_fb_node_list);
+	INIT_LIST_HEAD(&inst->fb_use_list);
+	INIT_LIST_HEAD(&inst->fb_free_list);
+	INIT_LIST_HEAD(&inst->fb_disp_list);
+
+	for (i = 0; i < ARRAY_SIZE(inst->dec_fb); i++) {
+		INIT_LIST_HEAD(&inst->dec_fb[i].list);
+		inst->dec_fb[i].fb = NULL;
+		list_add_tail(&inst->dec_fb[i].list,
+			      &inst->available_fb_node_list);
+	}
+}
+
+static void add_fb_to_free_list(struct vdec_vp8_inst *inst, void *fb)
+{
+	struct vdec_fb_node *node;
+
+	if (fb) {
+		node = list_first_entry(&inst->available_fb_node_list,
+					struct vdec_fb_node, list);
+		node->fb = fb;
+		list_move_tail(&node->list, &inst->fb_free_list);
+	}
+}
+
+static int alloc_working_buf(struct vdec_vp8_inst *inst)
+{
+	int err;
+	struct mtk_vcodec_mem *mem = &inst->working_buf;
+
+	mem->size = VP8_WORKING_BUF_SZ;
+	err = mtk_vcodec_mem_alloc(inst->ctx, mem);
+	if (err) {
+		mtk_vdec_err(inst->ctx, "Cannot allocate working buffer");
+		return err;
+	}
+
+	inst->vsi->dec.working_buf_dma = (uint64_t)mem->dma_addr;
+	return 0;
+}
+
+static void free_working_buf(struct vdec_vp8_inst *inst)
+{
+	struct mtk_vcodec_mem *mem = &inst->working_buf;
+
+	if (mem->va)
+		mtk_vcodec_mem_free(inst->ctx, mem);
+
+	inst->vsi->dec.working_buf_dma = 0;
+}
+
+static int vdec_vp8_init(struct mtk_vcodec_dec_ctx *ctx)
+{
+	struct vdec_vp8_inst *inst;
+	int err;
+
+	inst = kzalloc_obj(*inst);
+	if (!inst)
+		return  -ENOMEM;
+
+	inst->ctx = ctx;
+
+	inst->vpu.id = IPI_VDEC_VP8;
+	inst->vpu.ctx = ctx;
+
+	err = vpu_dec_init(&inst->vpu);
+	if (err) {
+		mtk_vdec_err(ctx, "vdec_vp8 init err=%d", err);
+		goto error_free_inst;
+	}
+
+	inst->vsi = (struct vdec_vp8_vsi *)inst->vpu.vsi;
+	init_list(inst);
+	err = alloc_working_buf(inst);
+	if (err)
+		goto error_deinit;
+
+	get_hw_reg_base(inst);
+	mtk_vdec_debug(ctx, "VP8 Instance >> %p", inst);
+
+	ctx->drv_handle = inst;
+	return 0;
+
+error_deinit:
+	vpu_dec_deinit(&inst->vpu);
+error_free_inst:
+	kfree(inst);
+	return err;
+}
+
+static int vdec_vp8_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
+			   struct vdec_fb *fb, bool *res_chg)
+{
+	struct vdec_vp8_inst *inst = (struct vdec_vp8_inst *)h_vdec;
+	struct vdec_vp8_dec_info *dec = &inst->vsi->dec;
+	struct vdec_vpu_inst *vpu = &inst->vpu;
+	unsigned char *bs_va;
+	unsigned int data;
+	int err = 0;
+	uint64_t y_fb_dma;
+	uint64_t c_fb_dma;
+
+	/* bs NULL means flush decoder */
+	if (bs == NULL) {
+		move_fb_list_use_to_free(inst);
+		return vpu_dec_reset(vpu);
+	}
+
+	y_fb_dma = fb ? (u64)fb->base_y.dma_addr : 0;
+	c_fb_dma = fb ? (u64)fb->base_c.dma_addr : 0;
+
+	mtk_vdec_debug(inst->ctx, "+ [%d] FB y_dma=%llx c_dma=%llx fb=%p",
+		       inst->frm_cnt, y_fb_dma, c_fb_dma, fb);
+
+	inst->cur_fb = fb;
+	dec->bs_dma = bs->dma_addr;
+	dec->bs_sz = bs->size;
+	dec->cur_y_fb_dma = y_fb_dma;
+	dec->cur_c_fb_dma = c_fb_dma;
+
+	mtk_vdec_debug(inst->ctx, "\n + FRAME[%d] +\n", inst->frm_cnt);
+
+	write_hw_segmentation_data(inst);
+	enable_hw_rw_function(inst);
+	store_dec_table(inst);
+
+	bs_va = (unsigned char *)bs->va;
+
+	/* retrieve width/hight and scale info from header */
+	data = (*(bs_va + 9) << 24) | (*(bs_va + 8) << 16) |
+	       (*(bs_va + 7) << 8) | *(bs_va + 6);
+	err = vpu_dec_start(vpu, &data, 1);
+	if (err) {
+		add_fb_to_free_list(inst, fb);
+		if (dec->wait_key_frame) {
+			mtk_vdec_debug(inst->ctx, "wait key frame !");
+			return 0;
+		}
+
+		goto error;
+	}
+
+	if (dec->resolution_changed) {
+		mtk_vdec_debug(inst->ctx, "- resolution_changed -");
+		*res_chg = true;
+		add_fb_to_free_list(inst, fb);
+		return 0;
+	}
+
+	/* wait decoder done interrupt */
+	mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED,
+				     WAIT_INTR_TIMEOUT_MS, 0);
+
+	if (inst->vsi->load_data)
+		load_dec_table(inst);
+
+	vp8_dec_finish(inst);
+	read_hw_segmentation_data(inst);
+
+	err = vpu_dec_end(vpu);
+	if (err)
+		goto error;
+
+	mtk_vdec_debug(inst->ctx, "\n - FRAME[%d] - show=%d\n", inst->frm_cnt, dec->show_frame);
+	inst->frm_cnt++;
+	*res_chg = false;
+	return 0;
+
+error:
+	mtk_vdec_err(inst->ctx, "\n - FRAME[%d] - err=%d\n", inst->frm_cnt, err);
+	return err;
+}
+
+static void get_disp_fb(struct vdec_vp8_inst *inst, struct vdec_fb **out_fb)
+{
+	struct vdec_fb_node *node;
+	struct vdec_fb *fb;
+
+	node = list_first_entry_or_null(&inst->fb_disp_list,
+					struct vdec_fb_node, list);
+	if (node) {
+		list_move_tail(&node->list, &inst->available_fb_node_list);
+		fb = (struct vdec_fb *)node->fb;
+		fb->status |= FB_ST_DISPLAY;
+		mtk_vdec_debug(inst->ctx, "[FB] get disp fb %p st=%d", node->fb, fb->status);
+	} else {
+		fb = NULL;
+		mtk_vdec_debug(inst->ctx, "[FB] there is no disp fb");
+	}
+
+	*out_fb = fb;
+}
+
+static void get_free_fb(struct vdec_vp8_inst *inst, struct vdec_fb **out_fb)
+{
+	struct vdec_fb_node *node;
+	struct vdec_fb *fb;
+
+	node = list_first_entry_or_null(&inst->fb_free_list,
+					struct vdec_fb_node, list);
+	if (node) {
+		list_move_tail(&node->list, &inst->available_fb_node_list);
+		fb = (struct vdec_fb *)node->fb;
+		fb->status |= FB_ST_FREE;
+		mtk_vdec_debug(inst->ctx, "[FB] get free fb %p st=%d", node->fb, fb->status);
+	} else {
+		fb = NULL;
+		mtk_vdec_debug(inst->ctx, "[FB] there is no free fb");
+	}
+
+	*out_fb = fb;
+}
+
+static void get_crop_info(struct vdec_vp8_inst *inst, struct v4l2_rect *cr)
+{
+	cr->left = 0;
+	cr->top = 0;
+	cr->width = inst->vsi->pic.pic_w;
+	cr->height = inst->vsi->pic.pic_h;
+	mtk_vdec_debug(inst->ctx, "get crop info l=%d, t=%d, w=%d, h=%d",
+		       cr->left, cr->top, cr->width, cr->height);
+}
+
+static int vdec_vp8_get_param(void *h_vdec, enum vdec_get_param_type type,
+			      void *out)
+{
+	struct vdec_vp8_inst *inst = (struct vdec_vp8_inst *)h_vdec;
+
+	switch (type) {
+	case GET_PARAM_DISP_FRAME_BUFFER:
+		get_disp_fb(inst, out);
+		break;
+
+	case GET_PARAM_FREE_FRAME_BUFFER:
+		get_free_fb(inst, out);
+		break;
+
+	case GET_PARAM_PIC_INFO:
+		get_pic_info(inst, out);
+		break;
+
+	case GET_PARAM_CROP_INFO:
+		get_crop_info(inst, out);
+		break;
+
+	case GET_PARAM_DPB_SIZE:
+		*((unsigned int *)out) = VP8_DPB_SIZE;
+		break;
+
+	default:
+		mtk_vdec_err(inst->ctx, "invalid get parameter type=%d", type);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void vdec_vp8_deinit(void *h_vdec)
+{
+	struct vdec_vp8_inst *inst = (struct vdec_vp8_inst *)h_vdec;
+
+	vpu_dec_deinit(&inst->vpu);
+	free_working_buf(inst);
+	kfree(inst);
+}
+
+const struct vdec_common_if vdec_vp8_if = {
+	.init		= vdec_vp8_init,
+	.decode		= vdec_vp8_decode,
+	.get_param	= vdec_vp8_get_param,
+	.deinit		= vdec_vp8_deinit,
+};

linux-7.2.3/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp8_req_if.c

@@ -0,0 +1,436 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Author: Yunfei Dong <yunfei.dong@mediatek.com>
+ */
+
+#include <linux/slab.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/videobuf2-dma-contig.h>
+#include <uapi/linux/v4l2-controls.h>
+
+#include "../mtk_vcodec_dec.h"
+#include "../../common/mtk_vcodec_intr.h"
+#include "../vdec_drv_base.h"
+#include "../vdec_drv_if.h"
+#include "../vdec_vpu_if.h"
+
+/* Decoding picture buffer size (3 reference frames plus current frame) */
+#define VP8_DPB_SIZE 4
+
+/* HW working buffer size (bytes) */
+#define VP8_SEG_ID_SZ   SZ_256K
+#define VP8_PP_WRAPY_SZ SZ_64K
+#define VP8_PP_WRAPC_SZ SZ_64K
+#define VP8_VLD_PRED_SZ SZ_64K
+
+/**
+ * struct vdec_vp8_slice_info - decode misc information
+ *
+ * @vld_wrapper_dma:	vld wrapper dma address
+ * @seg_id_buf_dma:	seg id dma address
+ * @wrap_y_dma:	wrap y dma address
+ * @wrap_c_dma:	wrap y dma address
+ * @cur_y_fb_dma:	current plane Y frame buffer dma address
+ * @cur_c_fb_dma:	current plane C frame buffer dma address
+ * @bs_dma:		bitstream dma address
+ * @bs_sz:		bitstream size
+ * @resolution_changed:resolution change flag 1 - changed,  0 - not changed
+ * @frame_header_type:	current frame header type
+ * @crc:		used to check whether hardware's status is right
+ * @reserved:		reserved, currently unused
+ */
+struct vdec_vp8_slice_info {
+	u64 vld_wrapper_dma;
+	u64 seg_id_buf_dma;
+	u64 wrap_y_dma;
+	u64 wrap_c_dma;
+	u64 cur_y_fb_dma;
+	u64 cur_c_fb_dma;
+	u64 bs_dma;
+	u32 bs_sz;
+	u32 resolution_changed;
+	u32 frame_header_type;
+	u32 crc[8];
+	u32 reserved;
+};
+
+/**
+ * struct vdec_vp8_slice_dpb_info  - vp8 reference information
+ *
+ * @y_dma_addr:	Y bitstream physical address
+ * @c_dma_addr:	CbCr bitstream physical address
+ * @reference_flag:	reference picture flag
+ * @reserved:		64bit align
+ */
+struct vdec_vp8_slice_dpb_info {
+	dma_addr_t y_dma_addr;
+	dma_addr_t c_dma_addr;
+	int reference_flag;
+	int reserved;
+};
+
+/**
+ * struct vdec_vp8_slice_vsi - VPU shared information
+ *
+ * @dec:		decoding information
+ * @pic:		picture information
+ * @vp8_dpb_info:	reference buffer information
+ */
+struct vdec_vp8_slice_vsi {
+	struct vdec_vp8_slice_info dec;
+	struct vdec_pic_info pic;
+	struct vdec_vp8_slice_dpb_info vp8_dpb_info[3];
+};
+
+/**
+ * struct vdec_vp8_slice_inst - VP8 decoder instance
+ *
+ * @seg_id_buf:	seg buffer
+ * @wrap_y_buf:	wrapper y buffer
+ * @wrap_c_buf:	wrapper c buffer
+ * @vld_wrapper_buf:	vld wrapper buffer
+ * @ctx:		V4L2 context
+ * @vpu:		VPU instance for decoder
+ * @vsi:		VPU share information
+ */
+struct vdec_vp8_slice_inst {
+	struct mtk_vcodec_mem seg_id_buf;
+	struct mtk_vcodec_mem wrap_y_buf;
+	struct mtk_vcodec_mem wrap_c_buf;
+	struct mtk_vcodec_mem vld_wrapper_buf;
+	struct mtk_vcodec_dec_ctx *ctx;
+	struct vdec_vpu_inst vpu;
+	struct vdec_vp8_slice_vsi *vsi;
+};
+
+static void *vdec_vp8_slice_get_ctrl_ptr(struct mtk_vcodec_dec_ctx *ctx, int id)
+{
+	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(&ctx->ctrl_hdl, id);
+
+	if (!ctrl)
+		return ERR_PTR(-EINVAL);
+
+	return ctrl->p_cur.p;
+}
+
+static void vdec_vp8_slice_get_pic_info(struct vdec_vp8_slice_inst *inst)
+{
+	struct mtk_vcodec_dec_ctx *ctx = inst->ctx;
+	unsigned int data[3];
+
+	data[0] = ctx->picinfo.pic_w;
+	data[1] = ctx->picinfo.pic_h;
+	data[2] = ctx->capture_fourcc;
+	vpu_dec_get_param(&inst->vpu, data, 3, GET_PARAM_PIC_INFO);
+
+	ctx->picinfo.buf_w = ALIGN(ctx->picinfo.pic_w, 64);
+	ctx->picinfo.buf_h = ALIGN(ctx->picinfo.pic_h, 64);
+	ctx->picinfo.fb_sz[0] = inst->vpu.fb_sz[0];
+	ctx->picinfo.fb_sz[1] = inst->vpu.fb_sz[1];
+
+	inst->vsi->pic.pic_w = ctx->picinfo.pic_w;
+	inst->vsi->pic.pic_h = ctx->picinfo.pic_h;
+	inst->vsi->pic.buf_w = ctx->picinfo.buf_w;
+	inst->vsi->pic.buf_h = ctx->picinfo.buf_h;
+	inst->vsi->pic.fb_sz[0] = ctx->picinfo.fb_sz[0];
+	inst->vsi->pic.fb_sz[1] = ctx->picinfo.fb_sz[1];
+	mtk_vdec_debug(inst->ctx, "pic(%d, %d), buf(%d, %d)",
+		       ctx->picinfo.pic_w, ctx->picinfo.pic_h,
+		       ctx->picinfo.buf_w, ctx->picinfo.buf_h);
+	mtk_vdec_debug(inst->ctx, "fb size: Y(%d), C(%d)",
+		       ctx->picinfo.fb_sz[0], ctx->picinfo.fb_sz[1]);
+}
+
+static int vdec_vp8_slice_alloc_working_buf(struct vdec_vp8_slice_inst *inst)
+{
+	int err;
+	struct mtk_vcodec_mem *mem;
+
+	mem = &inst->seg_id_buf;
+	mem->size = VP8_SEG_ID_SZ;
+	err = mtk_vcodec_mem_alloc(inst->ctx, mem);
+	if (err) {
+		mtk_vdec_err(inst->ctx, "Cannot allocate working buffer");
+		return err;
+	}
+	inst->vsi->dec.seg_id_buf_dma = (u64)mem->dma_addr;
+
+	mem = &inst->wrap_y_buf;
+	mem->size = VP8_PP_WRAPY_SZ;
+	err = mtk_vcodec_mem_alloc(inst->ctx, mem);
+	if (err) {
+		mtk_vdec_err(inst->ctx, "cannot allocate WRAP Y buffer");
+		return err;
+	}
+	inst->vsi->dec.wrap_y_dma = (u64)mem->dma_addr;
+
+	mem = &inst->wrap_c_buf;
+	mem->size = VP8_PP_WRAPC_SZ;
+	err = mtk_vcodec_mem_alloc(inst->ctx, mem);
+	if (err) {
+		mtk_vdec_err(inst->ctx, "cannot allocate WRAP C buffer");
+		return err;
+	}
+	inst->vsi->dec.wrap_c_dma = (u64)mem->dma_addr;
+
+	mem = &inst->vld_wrapper_buf;
+	mem->size = VP8_VLD_PRED_SZ;
+	err = mtk_vcodec_mem_alloc(inst->ctx, mem);
+	if (err) {
+		mtk_vdec_err(inst->ctx, "cannot allocate vld wrapper buffer");
+		return err;
+	}
+	inst->vsi->dec.vld_wrapper_dma = (u64)mem->dma_addr;
+
+	return 0;
+}
+
+static void vdec_vp8_slice_free_working_buf(struct vdec_vp8_slice_inst *inst)
+{
+	struct mtk_vcodec_mem *mem;
+
+	mem = &inst->seg_id_buf;
+	if (mem->va)
+		mtk_vcodec_mem_free(inst->ctx, mem);
+	inst->vsi->dec.seg_id_buf_dma = 0;
+
+	mem = &inst->wrap_y_buf;
+	if (mem->va)
+		mtk_vcodec_mem_free(inst->ctx, mem);
+	inst->vsi->dec.wrap_y_dma = 0;
+
+	mem = &inst->wrap_c_buf;
+	if (mem->va)
+		mtk_vcodec_mem_free(inst->ctx, mem);
+	inst->vsi->dec.wrap_c_dma = 0;
+
+	mem = &inst->vld_wrapper_buf;
+	if (mem->va)
+		mtk_vcodec_mem_free(inst->ctx, mem);
+	inst->vsi->dec.vld_wrapper_dma = 0;
+}
+
+static u64 vdec_vp8_slice_get_ref_by_ts(const struct v4l2_ctrl_vp8_frame *frame_header,
+					int index)
+{
+	switch (index) {
+	case 0:
+		return frame_header->last_frame_ts;
+	case 1:
+		return frame_header->golden_frame_ts;
+	case 2:
+		return frame_header->alt_frame_ts;
+	default:
+		break;
+	}
+
+	return -1;
+}
+
+static int vdec_vp8_slice_get_decode_parameters(struct vdec_vp8_slice_inst *inst)
+{
+	const struct v4l2_ctrl_vp8_frame *frame_header;
+	struct mtk_vcodec_dec_ctx *ctx = inst->ctx;
+	struct vb2_queue *vq;
+	struct vb2_buffer *vb;
+	u64 referenct_ts;
+	int index;
+
+	frame_header = vdec_vp8_slice_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_VP8_FRAME);
+	if (IS_ERR(frame_header))
+		return PTR_ERR(frame_header);
+
+	vq = v4l2_m2m_get_vq(ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
+	for (index = 0; index < 3; index++) {
+		referenct_ts = vdec_vp8_slice_get_ref_by_ts(frame_header, index);
+		vb = vb2_find_buffer(vq, referenct_ts);
+		if (!vb) {
+			if (!V4L2_VP8_FRAME_IS_KEY_FRAME(frame_header))
+				mtk_vdec_err(inst->ctx, "reference invalid: index(%d) ts(%lld)",
+					     index, referenct_ts);
+			inst->vsi->vp8_dpb_info[index].reference_flag = 0;
+			continue;
+		}
+		inst->vsi->vp8_dpb_info[index].reference_flag = 1;
+
+		inst->vsi->vp8_dpb_info[index].y_dma_addr =
+			vb2_dma_contig_plane_dma_addr(vb, 0);
+		if (ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 2)
+			inst->vsi->vp8_dpb_info[index].c_dma_addr =
+				vb2_dma_contig_plane_dma_addr(vb, 1);
+		else
+			inst->vsi->vp8_dpb_info[index].c_dma_addr =
+				inst->vsi->vp8_dpb_info[index].y_dma_addr +
+				ctx->picinfo.fb_sz[0];
+	}
+
+	inst->vsi->dec.frame_header_type = frame_header->flags >> 1;
+
+	return 0;
+}
+
+static int vdec_vp8_slice_init(struct mtk_vcodec_dec_ctx *ctx)
+{
+	struct vdec_vp8_slice_inst *inst;
+	int err;
+
+	inst = kzalloc_obj(*inst);
+	if (!inst)
+		return -ENOMEM;
+
+	inst->ctx = ctx;
+
+	inst->vpu.id = SCP_IPI_VDEC_LAT;
+	inst->vpu.core_id = SCP_IPI_VDEC_CORE;
+	inst->vpu.ctx = ctx;
+	inst->vpu.codec_type = ctx->current_codec;
+	inst->vpu.capture_type = ctx->capture_fourcc;
+
+	err = vpu_dec_init(&inst->vpu);
+	if (err) {
+		mtk_vdec_err(ctx, "vdec_vp8 init err=%d", err);
+		goto error_free_inst;
+	}
+
+	inst->vsi = inst->vpu.vsi;
+	err = vdec_vp8_slice_alloc_working_buf(inst);
+	if (err)
+		goto error_deinit;
+
+	mtk_vdec_debug(ctx, "vp8 struct size = %d vsi: %d\n",
+		       (int)sizeof(struct v4l2_ctrl_vp8_frame),
+		       (int)sizeof(struct vdec_vp8_slice_vsi));
+	mtk_vdec_debug(ctx, "vp8:%p, codec_type = 0x%x vsi: 0x%p",
+		       inst, inst->vpu.codec_type, inst->vpu.vsi);
+
+	ctx->drv_handle = inst;
+	return 0;
+
+error_deinit:
+	vpu_dec_deinit(&inst->vpu);
+error_free_inst:
+	kfree(inst);
+	return err;
+}
+
+static int vdec_vp8_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
+				 struct vdec_fb *fb, bool *res_chg)
+{
+	struct vdec_vp8_slice_inst *inst = h_vdec;
+	struct vdec_vpu_inst *vpu = &inst->vpu;
+	struct mtk_video_dec_buf *src_buf_info, *dst_buf_info;
+	unsigned int data;
+	u64 y_fb_dma, c_fb_dma;
+	int err, timeout;
+
+	/* Resolution changes are never initiated by us */
+	*res_chg = false;
+
+	/* bs NULL means flush decoder */
+	if (!bs)
+		return vpu_dec_reset(vpu);
+
+	src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer);
+
+	fb = inst->ctx->dev->vdec_pdata->get_cap_buffer(inst->ctx);
+	if (!fb) {
+		mtk_vdec_err(inst->ctx, "fb buffer is NULL");
+		return -ENOMEM;
+	}
+
+	dst_buf_info = container_of(fb, struct mtk_video_dec_buf, frame_buffer);
+	y_fb_dma = fb->base_y.dma_addr;
+	if (inst->ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes == 1)
+		c_fb_dma = y_fb_dma +
+			inst->ctx->picinfo.buf_w * inst->ctx->picinfo.buf_h;
+	else
+		c_fb_dma = fb->base_c.dma_addr;
+
+	inst->vsi->dec.bs_dma = (u64)bs->dma_addr;
+	inst->vsi->dec.bs_sz = bs->size;
+	inst->vsi->dec.cur_y_fb_dma = y_fb_dma;
+	inst->vsi->dec.cur_c_fb_dma = c_fb_dma;
+
+	mtk_vdec_debug(inst->ctx, "frame[%d] bs(%zu 0x%llx) y/c(0x%llx 0x%llx)",
+		       inst->ctx->decoded_frame_cnt,
+		       bs->size, (u64)bs->dma_addr,
+		       y_fb_dma, c_fb_dma);
+
+	v4l2_m2m_buf_copy_metadata(&src_buf_info->m2m_buf.vb,
+				   &dst_buf_info->m2m_buf.vb);
+
+	err = vdec_vp8_slice_get_decode_parameters(inst);
+	if (err)
+		goto error;
+
+	err = vpu_dec_start(vpu, &data, 1);
+	if (err) {
+		mtk_vdec_debug(inst->ctx, "vp8 dec start err!");
+		goto error;
+	}
+
+	if (inst->vsi->dec.resolution_changed) {
+		mtk_vdec_debug(inst->ctx, "- resolution_changed -");
+		*res_chg = true;
+		return 0;
+	}
+
+	/* wait decode done interrupt */
+	timeout = mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED,
+					       50, MTK_VDEC_CORE);
+
+	err = vpu_dec_end(vpu);
+	if (err || timeout)
+		mtk_vdec_debug(inst->ctx, "vp8 dec error timeout:%d err: %d pic_%d",
+			       timeout, err, inst->ctx->decoded_frame_cnt);
+
+	mtk_vdec_debug(inst->ctx, "pic[%d] crc: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x",
+		       inst->ctx->decoded_frame_cnt,
+		       inst->vsi->dec.crc[0], inst->vsi->dec.crc[1],
+		       inst->vsi->dec.crc[2], inst->vsi->dec.crc[3],
+		       inst->vsi->dec.crc[4], inst->vsi->dec.crc[5],
+		       inst->vsi->dec.crc[6], inst->vsi->dec.crc[7]);
+
+	inst->ctx->decoded_frame_cnt++;
+error:
+	return err;
+}
+
+static int vdec_vp8_slice_get_param(void *h_vdec, enum vdec_get_param_type type, void *out)
+{
+	struct vdec_vp8_slice_inst *inst = h_vdec;
+
+	switch (type) {
+	case GET_PARAM_PIC_INFO:
+		vdec_vp8_slice_get_pic_info(inst);
+		break;
+	case GET_PARAM_CROP_INFO:
+		mtk_vdec_debug(inst->ctx, "No need to get vp8 crop information.");
+		break;
+	case GET_PARAM_DPB_SIZE:
+		*((unsigned int *)out) = VP8_DPB_SIZE;
+		break;
+	default:
+		mtk_vdec_err(inst->ctx, "invalid get parameter type=%d", type);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void vdec_vp8_slice_deinit(void *h_vdec)
+{
+	struct vdec_vp8_slice_inst *inst = h_vdec;
+
+	vpu_dec_deinit(&inst->vpu);
+	vdec_vp8_slice_free_working_buf(inst);
+	kfree(inst);
+}
+
+const struct vdec_common_if vdec_vp8_slice_if = {
+	.init		= vdec_vp8_slice_init,
+	.decode		= vdec_vp8_slice_decode,
+	.get_param	= vdec_vp8_slice_get_param,
+	.deinit		= vdec_vp8_slice_deinit,
+};