From: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
Add the firmware interface allowing to decode H.264 in a stateless
manner.
Signed-off-by: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
Co-developed-by: Alexandre Courbot <acourbot@xxxxxxxxxxxx>
Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxxxx>
[acourbot: refactor, cleanup and split]
---
.../mtk-vcodec/vdec/vdec_h264_req_if.c | 533 ++++++++++++++++++
.../media/platform/mtk-vcodec/vdec_drv_if.c | 4 +
2 files changed, 537 insertions(+)
create mode 100644 drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c
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..27874afac86b
--- /dev/null
+++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c
@@ -0,0 +1,533 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <media/v4l2-mem2mem.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_H264_PPS 0x08
+#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_FB_NUM 17
+#define H264_MAX_MV_NUM 32
+#define HDR_PARSING_BUF_SZ 1024
+
+/**
+ * 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_dec_slice_param - parameters for decode current frame
+ */
+struct mtk_h264_dec_slice_param {
+ struct v4l2_ctrl_h264_sps sps;
+ struct v4l2_ctrl_h264_pps pps;
+ struct v4l2_ctrl_h264_scaling_matrix scaling_matrix;
+ struct v4l2_ctrl_h264_slice_param slice_param;
+ struct v4l2_ctrl_h264_decode_param decode_param;
+ 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_param;
+};
+
+/**
+ * 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 : VPU shared information
+ */
+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;
+ struct mtk_h264_dec_slice_param h264_slice_param;
+};
+
+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 v4l2_ctrl_h264_decode_param *decode_param =
+ &inst->h264_slice_param.decode_param;
+ struct mtk_h264_dec_slice_param *slice_param = &inst->h264_slice_param;
+ const struct v4l2_h264_dpb_entry *dpb;
+ struct vb2_queue *vq;
+ struct vb2_buffer *vb;
+ struct vb2_v4l2_buffer *vb2_v4l2;
+ u32 index;
+
+ vq = v4l2_m2m_get_vq(inst->ctx->m2m_ctx,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
+
+ for (index = 0; index < 16; index++) {
+ int vb2_index;
+
+ dpb = &decode_param->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->buf_index, 0);
+ if (vb2_index < 0) {
+ mtk_vcodec_err(inst, "Reference invalid: dpb_index(%d) buf_index(%d)",
+ index, dpb->buf_index);
+ 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_vdec_decode_parameters(struct vdec_h264_slice_inst *inst)
+{
+ struct mtk_h264_dec_slice_param *slice_param = &inst->h264_slice_param;
+
+ memcpy(&slice_param->sps,
+ get_ctrl_ptr(inst->ctx, V4L2_CID_MPEG_VIDEO_H264_SPS),
+ sizeof(struct v4l2_ctrl_h264_sps));
+ memcpy(&slice_param->pps,
+ get_ctrl_ptr(inst->ctx, V4L2_CID_MPEG_VIDEO_H264_PPS),
+ sizeof(struct v4l2_ctrl_h264_pps));
+ memcpy(&slice_param->scaling_matrix,
+ get_ctrl_ptr(inst->ctx, V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX),
+ sizeof(struct v4l2_ctrl_h264_scaling_matrix));
+ memcpy(&slice_param->slice_param,
+ get_ctrl_ptr(inst->ctx, V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAM),
+ sizeof(struct v4l2_ctrl_h264_slice_param));
+ memcpy(&slice_param->decode_param,
+ get_ctrl_ptr(inst->ctx, V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAM),
+ sizeof(struct v4l2_ctrl_h264_decode_param));
+
+ get_h264_dpb_list(inst);
+ memcpy(&inst->vsi->h264_slice_param, slice_param,
+ sizeof(struct mtk_h264_dec_slice_param));
+}
+
+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->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->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->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->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->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(%d, %d), C(%d, %d)", ctx->picinfo.y_bs_sz,
+ ctx->picinfo.y_len_sz, ctx->picinfo.c_bs_sz,
+ ctx->picinfo.c_len_sz);
+
+ if ((ctx->last_decoded_picinfo.pic_w != ctx->picinfo.pic_w) ||
+ (ctx->last_decoded_picinfo.pic_h != ctx->picinfo.pic_h)) {
+
+ inst->vsi->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->dec.realloc_mv_buf = true;
+
+ mtk_v4l2_debug(1, "ResChg: (%d %d) : old(%d, %d) -> new(%d, %d)",
+ inst->vsi->dec.resolution_changed,
+ inst->vsi->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->crop.left;
+ cr->top = inst->vsi->crop.top;
+ cr->width = inst->vsi->crop.width;
+ cr->height = inst->vsi->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->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;
+ inst->vpu.handler = vpu_dec_ipi_handler;
+
+ err = vpu_dec_init(&inst->vpu);
+ if (err) {
+ mtk_vcodec_err(inst, "vdec_h264 init err=%d", err);
+ goto error_free_inst;
+ }
+
+ inst->vsi = (struct vdec_h264_vsi *)inst->vpu.vsi;
+ err = allocate_predication_buf(inst);
+ if (err)
+ goto error_deinit;
+
+ mtk_v4l2_debug(0, "struct size = %d,%d,%d,%d,%d,%d\n",
+ sizeof(struct v4l2_ctrl_h264_sps),
+ sizeof(struct v4l2_ctrl_h264_pps),
+ sizeof(struct v4l2_ctrl_h264_scaling_matrix),
+ sizeof(struct v4l2_ctrl_h264_slice_param),
+ sizeof(struct v4l2_ctrl_h264_decode_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;
+ unsigned int nal_type, data[2];
+ unsigned char *buf;
+ uint64_t vdec_fb_va;
+ 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);
+
+ vdec_fb_va = (u64)(uintptr_t)fb;
+ 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->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;
+
+ get_vdec_decode_parameters(inst);
+ *res_chg = inst->vsi->dec.resolution_changed;
+ if (*res_chg) {
+ mtk_vcodec_debug(inst, "- resolution changed -");
+ if (inst->vsi->dec.realloc_mv_buf) {
+ err = alloc_mv_buf(inst, &(inst->ctx->picinfo));
+ inst->vsi->dec.realloc_mv_buf = false;
+ if (err)
+ goto err_free_fb_out;
+ }
+ *res_chg = false;
+ }
+
+ 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);
+ }
+
+ 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 7e3c536909a2..26c05be783e5 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_drv_if.c
+++ b/drivers/media/platform/mtk-vcodec/vdec_drv_if.c
@@ -25,12 +25,16 @@
extern const struct vdec_common_if vdec_h264_if;
extern const struct vdec_common_if vdec_vp8_if;
extern const struct vdec_common_if vdec_vp9_if;
+extern const struct vdec_common_if vdec_h264_slice_if;
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;
--
2.22.0.rc1.257.g3120a18244-goog
