// 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(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_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, true);
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,
};
Codebase Browser
linux