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Subject[PATCH 8/9] media: hantro: Add support for H264 decoding on G1
Date
From: Hertz Wong <hertz.wong@rock-chips.com>

Add the G1 specific bits to support H264 decoding.

Signed-off-by: Hertz Wong <hertz.wong@rock-chips.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
---
drivers/staging/media/hantro/Makefile | 1 +
.../staging/media/hantro/hantro_g1_h264_dec.c | 295 ++++++++++++++++++
drivers/staging/media/hantro/hantro_hw.h | 1 +
3 files changed, 297 insertions(+)
create mode 100644 drivers/staging/media/hantro/hantro_g1_h264_dec.c

diff --git a/drivers/staging/media/hantro/Makefile b/drivers/staging/media/hantro/Makefile
index d63e25682287..9d66f956f2f3 100644
--- a/drivers/staging/media/hantro/Makefile
+++ b/drivers/staging/media/hantro/Makefile
@@ -4,6 +4,7 @@ hantro-vpu-y += \
hantro_drv.o \
hantro_v4l2.o \
hantro_h1_jpeg_enc.o \
+ hantro_g1_h264_dec.o \
hantro_g1_mpeg2_dec.o \
hantro_g1_vp8_dec.o \
rk3399_vpu_hw_jpeg_enc.o \
diff --git a/drivers/staging/media/hantro/hantro_g1_h264_dec.c b/drivers/staging/media/hantro/hantro_g1_h264_dec.c
new file mode 100644
index 000000000000..3a5be123202b
--- /dev/null
+++ b/drivers/staging/media/hantro/hantro_g1_h264_dec.c
@@ -0,0 +1,295 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Rockchip RK3288 VPU codec driver
+ *
+ * Copyright (c) 2014 Rockchip Electronics Co., Ltd.
+ * Hertz Wong <hertz.wong@rock-chips.com>
+ * Herman Chen <herman.chen@rock-chips.com>
+ *
+ * Copyright (C) 2014 Google, Inc.
+ * Tomasz Figa <tfiga@chromium.org>
+ */
+
+#include <linux/types.h>
+#include <linux/sort.h>
+
+#include <media/v4l2-mem2mem.h>
+
+#include "hantro_g1_regs.h"
+#include "hantro_hw.h"
+#include "hantro_v4l2.h"
+
+static void set_params(struct hantro_ctx *ctx)
+{
+ const struct hantro_h264_dec_ctrls *ctrls = &ctx->h264_dec.ctrls;
+ const struct v4l2_ctrl_h264_decode_params *dec_param = ctrls->decode;
+ const struct v4l2_ctrl_h264_slice_params *slices = ctrls->slices;
+ const struct v4l2_ctrl_h264_sps *sps = ctrls->sps;
+ const struct v4l2_ctrl_h264_pps *pps = ctrls->pps;
+ struct vb2_v4l2_buffer *src_buf = hantro_get_src_buf(ctx);
+ struct hantro_dev *vpu = ctx->dev;
+ u32 reg;
+
+ /* Decoder control register 0. */
+ reg = G1_REG_DEC_CTRL0_DEC_AXI_WR_ID(0x0);
+ if (sps->flags & V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD)
+ reg |= G1_REG_DEC_CTRL0_SEQ_MBAFF_E;
+ reg |= G1_REG_DEC_CTRL0_PICORD_COUNT_E;
+ if (dec_param->nal_ref_idc)
+ reg |= G1_REG_DEC_CTRL0_WRITE_MVS_E;
+
+ if (!(sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY) &&
+ (sps->flags & V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD ||
+ slices[0].flags & V4L2_H264_SLICE_FLAG_FIELD_PIC))
+ reg |= G1_REG_DEC_CTRL0_PIC_INTERLACE_E;
+ if (slices[0].flags & V4L2_H264_SLICE_FLAG_FIELD_PIC)
+ reg |= G1_REG_DEC_CTRL0_PIC_FIELDMODE_E;
+ if (!(slices[0].flags & V4L2_H264_SLICE_FLAG_BOTTOM_FIELD))
+ reg |= G1_REG_DEC_CTRL0_PIC_TOPFIELD_E;
+ vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL0);
+
+ /* Decoder control register 1. */
+ reg = G1_REG_DEC_CTRL1_PIC_MB_WIDTH(sps->pic_width_in_mbs_minus1 + 1) |
+ G1_REG_DEC_CTRL1_PIC_MB_HEIGHT_P(sps->pic_height_in_map_units_minus1 + 1) |
+ G1_REG_DEC_CTRL1_REF_FRAMES(sps->max_num_ref_frames);
+ vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL1);
+
+ /* Decoder control register 2. */
+ reg = G1_REG_DEC_CTRL2_CH_QP_OFFSET(pps->chroma_qp_index_offset) |
+ G1_REG_DEC_CTRL2_CH_QP_OFFSET2(pps->second_chroma_qp_index_offset);
+
+ /* always use the matrix sent from userspace */
+ reg |= G1_REG_DEC_CTRL2_TYPE1_QUANT_E;
+
+ if (slices[0].flags & V4L2_H264_SLICE_FLAG_FIELD_PIC)
+ reg |= G1_REG_DEC_CTRL2_FIELDPIC_FLAG_E;
+ vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL2);
+
+ /* Decoder control register 3. */
+ reg = G1_REG_DEC_CTRL3_START_CODE_E |
+ G1_REG_DEC_CTRL3_INIT_QP(pps->pic_init_qp_minus26 + 26) |
+ G1_REG_DEC_CTRL3_STREAM_LEN(vb2_get_plane_payload(&src_buf->vb2_buf, 0));
+ vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL3);
+
+ /* Decoder control register 4. */
+ reg = G1_REG_DEC_CTRL4_FRAMENUM_LEN(sps->log2_max_frame_num_minus4 + 4) |
+ G1_REG_DEC_CTRL4_FRAMENUM(slices[0].frame_num) |
+ G1_REG_DEC_CTRL4_WEIGHT_BIPR_IDC(pps->weighted_bipred_idc);
+ if (pps->flags & V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE)
+ reg |= G1_REG_DEC_CTRL4_CABAC_E;
+ if (sps->flags & V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE)
+ reg |= G1_REG_DEC_CTRL4_DIR_8X8_INFER_E;
+ if (sps->profile_idc >= 0 && sps->chroma_format_idc == 0)
+ reg |= G1_REG_DEC_CTRL4_BLACKWHITE_E;
+ if (pps->flags & V4L2_H264_PPS_FLAG_WEIGHTED_PRED)
+ reg |= G1_REG_DEC_CTRL4_WEIGHT_PRED_E;
+ vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL4);
+
+ /* Decoder control register 5. */
+ reg = G1_REG_DEC_CTRL5_REFPIC_MK_LEN(slices[0].dec_ref_pic_marking_bit_size) |
+ G1_REG_DEC_CTRL5_IDR_PIC_ID(slices[0].idr_pic_id);
+ if (pps->flags & V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED)
+ reg |= G1_REG_DEC_CTRL5_CONST_INTRA_E;
+ if (pps->flags & V4L2_H264_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT)
+ reg |= G1_REG_DEC_CTRL5_FILT_CTRL_PRES;
+ if (pps->flags & V4L2_H264_PPS_FLAG_REDUNDANT_PIC_CNT_PRESENT)
+ reg |= G1_REG_DEC_CTRL5_RDPIC_CNT_PRES;
+ if (pps->flags & V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE)
+ reg |= G1_REG_DEC_CTRL5_8X8TRANS_FLAG_E;
+ if (dec_param->flags & V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC)
+ reg |= G1_REG_DEC_CTRL5_IDR_PIC_E;
+ vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL5);
+
+ /* Decoder control register 6. */
+ reg = G1_REG_DEC_CTRL6_PPS_ID(slices[0].pic_parameter_set_id) |
+ G1_REG_DEC_CTRL6_REFIDX0_ACTIVE(pps->num_ref_idx_l0_default_active_minus1 + 1) |
+ G1_REG_DEC_CTRL6_REFIDX1_ACTIVE(pps->num_ref_idx_l1_default_active_minus1 + 1) |
+ G1_REG_DEC_CTRL6_POC_LENGTH(slices[0].pic_order_cnt_bit_size);
+ vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL6);
+
+ /* Error concealment register. */
+ vdpu_write_relaxed(vpu, 0, G1_REG_ERR_CONC);
+
+ /* Prediction filter tap register. */
+ vdpu_write_relaxed(vpu,
+ G1_REG_PRED_FLT_PRED_BC_TAP_0_0(1) |
+ G1_REG_PRED_FLT_PRED_BC_TAP_0_1(-5 & 0x3ff) |
+ G1_REG_PRED_FLT_PRED_BC_TAP_0_2(20),
+ G1_REG_PRED_FLT);
+
+ /* Reference picture buffer control register. */
+ vdpu_write_relaxed(vpu, 0, G1_REG_REF_BUF_CTRL);
+
+ /* Reference picture buffer control register 2. */
+ vdpu_write_relaxed(vpu, G1_REG_REF_BUF_CTRL2_APF_THRESHOLD(8),
+ G1_REG_REF_BUF_CTRL2);
+}
+
+static void set_ref(struct hantro_ctx *ctx)
+{
+ struct vb2_v4l2_buffer *dst_buf = hantro_get_dst_buf(ctx);
+ struct v4l2_h264_dpb_entry *dpb = ctx->h264_dec.dpb;
+ const u8 *b0_reflist, *b1_reflist, *p_reflist;
+ struct hantro_dev *vpu = ctx->dev;
+ u32 dpb_longterm = 0;
+ u32 dpb_valid = 0;
+ int reg_num;
+ u32 reg;
+ int i;
+
+ dst_buf = hantro_get_dst_buf(ctx);
+
+ /*
+ * Set up bit maps of valid and long term DPBs.
+ * NOTE: The bits are reversed, i.e. MSb is DPB 0.
+ */
+ for (i = 0; i < HANTRO_H264_DPB_SIZE; ++i) {
+ if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE)
+ dpb_valid |= BIT(HANTRO_H264_DPB_SIZE - 1 - i);
+
+ if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM)
+ dpb_longterm |= BIT(HANTRO_H264_DPB_SIZE - 1 - i);
+ }
+ vdpu_write_relaxed(vpu, dpb_valid << 16, G1_REG_VALID_REF);
+ vdpu_write_relaxed(vpu, dpb_longterm << 16, G1_REG_LT_REF);
+
+ /*
+ * Set up reference frame picture numbers.
+ *
+ * Each G1_REG_REF_PIC(x) register contains numbers of two
+ * subsequential reference pictures.
+ */
+ for (i = 0; i < HANTRO_H264_DPB_SIZE; i += 2) {
+ reg = 0;
+ if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM)
+ reg |= G1_REG_REF_PIC_REFER0_NBR(dpb[i].pic_num);
+ else
+ reg |= G1_REG_REF_PIC_REFER0_NBR(dpb[i].frame_num);
+
+ if (dpb[i + 1].flags & V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM)
+ reg |= G1_REG_REF_PIC_REFER1_NBR(dpb[i + 1].pic_num);
+ else
+ reg |= G1_REG_REF_PIC_REFER1_NBR(dpb[i + 1].frame_num);
+
+ vdpu_write_relaxed(vpu, reg, G1_REG_REF_PIC(i / 2));
+ }
+
+ b0_reflist = ctx->h264_dec.reflists.b0;
+ b1_reflist = ctx->h264_dec.reflists.b1;
+ p_reflist = ctx->h264_dec.reflists.p;
+
+ /*
+ * Each G1_REG_BD_REF_PIC(x) register contains three entries
+ * of each forward and backward picture list.
+ */
+ reg_num = 0;
+ for (i = 0; i < 15; i += 3) {
+ reg = G1_REG_BD_REF_PIC_BINIT_RLIST_F0(b0_reflist[i]) |
+ G1_REG_BD_REF_PIC_BINIT_RLIST_F1(b0_reflist[i + 1]) |
+ G1_REG_BD_REF_PIC_BINIT_RLIST_F2(b0_reflist[i + 2]) |
+ G1_REG_BD_REF_PIC_BINIT_RLIST_B0(b1_reflist[i]) |
+ G1_REG_BD_REF_PIC_BINIT_RLIST_B1(b1_reflist[i + 1]) |
+ G1_REG_BD_REF_PIC_BINIT_RLIST_B2(b1_reflist[i + 2]);
+ vdpu_write_relaxed(vpu, reg, G1_REG_BD_REF_PIC(reg_num++));
+ }
+
+ /*
+ * G1_REG_BD_P_REF_PIC register contains last entries (index 15)
+ * of forward and backward reference picture lists and first 4 entries
+ * of P forward picture list.
+ */
+ reg = G1_REG_BD_P_REF_PIC_BINIT_RLIST_F15(b0_reflist[15]) |
+ G1_REG_BD_P_REF_PIC_BINIT_RLIST_B15(b1_reflist[15]) |
+ G1_REG_BD_P_REF_PIC_PINIT_RLIST_F0(p_reflist[0]) |
+ G1_REG_BD_P_REF_PIC_PINIT_RLIST_F1(p_reflist[1]) |
+ G1_REG_BD_P_REF_PIC_PINIT_RLIST_F2(p_reflist[2]) |
+ G1_REG_BD_P_REF_PIC_PINIT_RLIST_F3(p_reflist[3]);
+ vdpu_write_relaxed(vpu, reg, G1_REG_BD_P_REF_PIC);
+
+ /*
+ * Each G1_REG_FWD_PIC(x) register contains six consecutive
+ * entries of P forward picture list, starting from index 4.
+ */
+ reg_num = 0;
+ for (i = 4; i < HANTRO_H264_DPB_SIZE; i += 6) {
+ reg = G1_REG_FWD_PIC_PINIT_RLIST_F0(p_reflist[i]) |
+ G1_REG_FWD_PIC_PINIT_RLIST_F1(p_reflist[i + 1]) |
+ G1_REG_FWD_PIC_PINIT_RLIST_F2(p_reflist[i + 2]) |
+ G1_REG_FWD_PIC_PINIT_RLIST_F3(p_reflist[i + 3]) |
+ G1_REG_FWD_PIC_PINIT_RLIST_F4(p_reflist[i + 4]) |
+ G1_REG_FWD_PIC_PINIT_RLIST_F5(p_reflist[i + 5]);
+ vdpu_write_relaxed(vpu, reg, G1_REG_FWD_PIC(reg_num++));
+ }
+
+ /* Set up addresses of DPB buffers. */
+ for (i = 0; i < HANTRO_H264_DPB_SIZE; i++) {
+ struct vb2_buffer *buf = hantro_h264_get_ref_buf(ctx, i);
+
+ vdpu_write_relaxed(vpu, vb2_dma_contig_plane_dma_addr(buf, 0),
+ G1_REG_ADDR_REF(i));
+ }
+}
+
+static void set_buffers(struct hantro_ctx *ctx)
+{
+ const struct hantro_h264_dec_ctrls *ctrls = &ctx->h264_dec.ctrls;
+ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ struct hantro_dev *vpu = ctx->dev;
+ dma_addr_t src_dma, dst_dma;
+
+ src_buf = hantro_get_src_buf(ctx);
+ dst_buf = hantro_get_dst_buf(ctx);
+
+ /* Source (stream) buffer. */
+ src_dma = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
+ vdpu_write_relaxed(vpu, src_dma, G1_REG_ADDR_STR);
+
+ /* Destination (decoded frame) buffer. */
+ dst_dma = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
+ vdpu_write_relaxed(vpu, dst_dma, G1_REG_ADDR_DST);
+
+ /* Higher profiles require DMV buffer appended to reference frames. */
+ if (ctrls->sps->profile_idc > 66) {
+ size_t sizeimage = ctx->dst_fmt.plane_fmt[0].sizeimage;
+ size_t mv_offset = round_up(sizeimage, 8);
+
+ if (ctrls->slices[0].flags & V4L2_H264_SLICE_FLAG_BOTTOM_FIELD)
+ mv_offset += 32 * H264_MB_WIDTH(ctx->dst_fmt.width);
+
+ vdpu_write_relaxed(vpu, dst_dma + mv_offset,
+ G1_REG_ADDR_DIR_MV);
+ }
+
+ /* Auxiliary buffer prepared in hantro_g1_h264_dec_prepare_table(). */
+ vdpu_write_relaxed(vpu, ctx->h264_dec.priv.dma, G1_REG_ADDR_QTABLE);
+}
+
+void hantro_g1_h264_dec_run(struct hantro_ctx *ctx)
+{
+ struct hantro_dev *vpu = ctx->dev;
+
+ /* Prepare the H264 decoder context. */
+ if (hantro_h264_dec_prepare_run(ctx))
+ return;
+
+ /* Configure hardware registers. */
+ set_params(ctx);
+ set_ref(ctx);
+ set_buffers(ctx);
+
+ hantro_finish_run(ctx);
+
+ /* Start decoding! */
+ vdpu_write_relaxed(vpu,
+ G1_REG_CONFIG_DEC_AXI_RD_ID(0xffu) |
+ G1_REG_CONFIG_DEC_TIMEOUT_E |
+ G1_REG_CONFIG_DEC_OUT_ENDIAN |
+ G1_REG_CONFIG_DEC_STRENDIAN_E |
+ G1_REG_CONFIG_DEC_MAX_BURST(16) |
+ G1_REG_CONFIG_DEC_OUTSWAP32_E |
+ G1_REG_CONFIG_DEC_INSWAP32_E |
+ G1_REG_CONFIG_DEC_STRSWAP32_E |
+ G1_REG_CONFIG_DEC_CLK_GATE_E,
+ G1_REG_CONFIG);
+ vdpu_write(vpu, G1_REG_INTERRUPT_DEC_E, G1_REG_INTERRUPT);
+}
diff --git a/drivers/staging/media/hantro/hantro_hw.h b/drivers/staging/media/hantro/hantro_hw.h
index cc4fbeb9011f..7a9051faf99f 100644
--- a/drivers/staging/media/hantro/hantro_hw.h
+++ b/drivers/staging/media/hantro/hantro_hw.h
@@ -154,6 +154,7 @@ void hantro_jpeg_enc_exit(struct hantro_ctx *ctx);
struct vb2_buffer *hantro_h264_get_ref_buf(struct hantro_ctx *ctx,
unsigned int dpb_idx);
int hantro_h264_dec_prepare_run(struct hantro_ctx *ctx);
+void hantro_g1_h264_dec_run(struct hantro_ctx *ctx);
int hantro_h264_dec_init(struct hantro_ctx *ctx);
void hantro_h264_dec_exit(struct hantro_ctx *ctx);

--
2.20.1
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