Release 4.11 drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c
/*
* Copyright (c) 2016 MediaTek Inc.
* Author: Daniel Hsiao <daniel.hsiao@mediatek.com>
* PoChun Lin <pochun.lin@mediatek.com>
*
* This program is free software; you can redistribute it and/or
* modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include "../mtk_vcodec_drv.h"
#include "../mtk_vcodec_util.h"
#include "../mtk_vcodec_intr.h"
#include "../mtk_vcodec_enc.h"
#include "../mtk_vcodec_enc_pm.h"
#include "../venc_drv_base.h"
#include "../venc_ipi_msg.h"
#include "../venc_vpu_if.h"
#include "mtk_vpu.h"
#define VENC_BITSTREAM_FRAME_SIZE 0x0098
#define VENC_BITSTREAM_HEADER_LEN 0x00e8
/* This ac_tag is vp8 frame tag. */
#define MAX_AC_TAG_SIZE 10
/**
* enum venc_vp8_vpu_work_buf - vp8 encoder buffer index
*/
enum venc_vp8_vpu_work_buf {
VENC_VP8_VPU_WORK_BUF_LUMA,
VENC_VP8_VPU_WORK_BUF_LUMA2,
VENC_VP8_VPU_WORK_BUF_LUMA3,
VENC_VP8_VPU_WORK_BUF_CHROMA,
VENC_VP8_VPU_WORK_BUF_CHROMA2,
VENC_VP8_VPU_WORK_BUF_CHROMA3,
VENC_VP8_VPU_WORK_BUF_MV_INFO,
VENC_VP8_VPU_WORK_BUF_BS_HEADER,
VENC_VP8_VPU_WORK_BUF_PROB_BUF,
VENC_VP8_VPU_WORK_BUF_RC_INFO,
VENC_VP8_VPU_WORK_BUF_RC_CODE,
VENC_VP8_VPU_WORK_BUF_RC_CODE2,
VENC_VP8_VPU_WORK_BUF_RC_CODE3,
VENC_VP8_VPU_WORK_BUF_MAX,
};
/*
* struct venc_vp8_vpu_config - Structure for vp8 encoder configuration
* AP-W/R : AP is writer/reader on this item
* VPU-W/R: VPU is write/reader on this item
* @input_fourcc: input fourcc
* @bitrate: target bitrate (in bps)
* @pic_w: picture width. Picture size is visible stream resolution, in pixels,
* to be used for display purposes; must be smaller or equal to buffer
* size.
* @pic_h: picture height
* @buf_w: buffer width (with 16 alignment). Buffer size is stream resolution
* in pixels aligned to hardware requirements.
* @buf_h: buffer height (with 16 alignment)
* @gop_size: group of picture size (key frame)
* @framerate: frame rate in fps
* @ts_mode: temporal scalability mode (0: disable, 1: enable)
* support three temporal layers - 0: 7.5fps 1: 7.5fps 2: 15fps.
*/
struct venc_vp8_vpu_config {
u32 input_fourcc;
u32 bitrate;
u32 pic_w;
u32 pic_h;
u32 buf_w;
u32 buf_h;
u32 gop_size;
u32 framerate;
u32 ts_mode;
};
/*
* struct venc_vp8_vpu_buf - Structure for buffer information
* AP-W/R : AP is writer/reader on this item
* VPU-W/R: VPU is write/reader on this item
* @iova: IO virtual address
* @vpua: VPU side memory addr which is used by RC_CODE
* @size: buffer size (in bytes)
*/
struct venc_vp8_vpu_buf {
u32 iova;
u32 vpua;
u32 size;
};
/*
* struct venc_vp8_vsi - Structure for VPU driver control and info share
* AP-W/R : AP is writer/reader on this item
* VPU-W/R: VPU is write/reader on this item
* This structure is allocated in VPU side and shared to AP side.
* @config: vp8 encoder configuration
* @work_bufs: working buffer information in VPU side
* The work_bufs here is for storing the 'size' info shared to AP side.
* The similar item in struct venc_vp8_inst is for memory allocation
* in AP side. The AP driver will copy the 'size' from here to the one in
* struct mtk_vcodec_mem, then invoke mtk_vcodec_mem_alloc to allocate
* the buffer. After that, bypass the 'dma_addr' to the 'iova' field here for
* register setting in VPU side.
*/
struct venc_vp8_vsi {
struct venc_vp8_vpu_config config;
struct venc_vp8_vpu_buf work_bufs[VENC_VP8_VPU_WORK_BUF_MAX];
};
/*
* struct venc_vp8_inst - vp8 encoder AP driver instance
* @hw_base: vp8 encoder hardware register base
* @work_bufs: working buffer
* @work_buf_allocated: working buffer allocated flag
* @frm_cnt: encoded frame count, it's used for I-frame judgement and
* reset when force intra cmd received.
* @ts_mode: temporal scalability mode (0: disable, 1: enable)
* support three temporal layers - 0: 7.5fps 1: 7.5fps 2: 15fps.
* @vpu_inst: VPU instance to exchange information between AP and VPU
* @vsi: driver structure allocated by VPU side and shared to AP side for
* control and info share
* @ctx: context for v4l2 layer integration
*/
struct venc_vp8_inst {
void __iomem *hw_base;
struct mtk_vcodec_mem work_bufs[VENC_VP8_VPU_WORK_BUF_MAX];
bool work_buf_allocated;
unsigned int frm_cnt;
unsigned int ts_mode;
struct venc_vpu_inst vpu_inst;
struct venc_vp8_vsi *vsi;
struct mtk_vcodec_ctx *ctx;
};
static inline u32 vp8_enc_read_reg(struct venc_vp8_inst *inst, u32 addr)
{
return readl(inst->hw_base + addr);
}
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static void vp8_enc_free_work_buf(struct venc_vp8_inst *inst)
{
int i;
mtk_vcodec_debug_enter(inst);
/* Buffers need to be freed by AP. */
for (i = 0; i < VENC_VP8_VPU_WORK_BUF_MAX; i++) {
if ((inst->work_bufs[i].size == 0))
continue;
mtk_vcodec_mem_free(inst->ctx, &inst->work_bufs[i]);
}
mtk_vcodec_debug_leave(inst);
}
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static int vp8_enc_alloc_work_buf(struct venc_vp8_inst *inst)
{
int i;
int ret = 0;
struct venc_vp8_vpu_buf *wb = inst->vsi->work_bufs;
mtk_vcodec_debug_enter(inst);
for (i = 0; i < VENC_VP8_VPU_WORK_BUF_MAX; i++) {
if ((wb[i].size == 0))
continue;
/*
* This 'wb' structure is set by VPU side and shared to AP for
* buffer allocation and IO virtual addr mapping. For most of
* the buffers, AP will allocate the buffer according to 'size'
* field and store the IO virtual addr in 'iova' field. For the
* RC_CODEx buffers, they are pre-allocated in the VPU side
* because they are inside VPU SRAM, and save the VPU addr in
* the 'vpua' field. The AP will translate the VPU addr to the
* corresponding IO virtual addr and store in 'iova' field.
*/
inst->work_bufs[i].size = wb[i].size;
ret = mtk_vcodec_mem_alloc(inst->ctx, &inst->work_bufs[i]);
if (ret) {
mtk_vcodec_err(inst,
"cannot alloc work_bufs[%d]", i);
goto err_alloc;
}
/*
* This RC_CODEx is pre-allocated by VPU and saved in VPU addr.
* So we need use memcpy to copy RC_CODEx from VPU addr into IO
* virtual addr in 'iova' field for reg setting in VPU side.
*/
if (i == VENC_VP8_VPU_WORK_BUF_RC_CODE ||
i == VENC_VP8_VPU_WORK_BUF_RC_CODE2 ||
i == VENC_VP8_VPU_WORK_BUF_RC_CODE3) {
void *tmp_va;
tmp_va = vpu_mapping_dm_addr(inst->vpu_inst.dev,
wb[i].vpua);
memcpy(inst->work_bufs[i].va, tmp_va, wb[i].size);
}
wb[i].iova = inst->work_bufs[i].dma_addr;
mtk_vcodec_debug(inst,
"work_bufs[%d] va=0x%p,iova=%pad,size=%zu",
i, inst->work_bufs[i].va,
&inst->work_bufs[i].dma_addr,
inst->work_bufs[i].size);
}
mtk_vcodec_debug_leave(inst);
return ret;
err_alloc:
vp8_enc_free_work_buf(inst);
return ret;
}
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static unsigned int vp8_enc_wait_venc_done(struct venc_vp8_inst *inst)
{
unsigned int irq_status = 0;
struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)inst->ctx;
if (!mtk_vcodec_wait_for_done_ctx(ctx, MTK_INST_IRQ_RECEIVED,
WAIT_INTR_TIMEOUT_MS)) {
irq_status = ctx->irq_status;
mtk_vcodec_debug(inst, "isr return %x", irq_status);
}
return irq_status;
}
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/*
* Compose ac_tag, bitstream header and bitstream payload into
* one bitstream buffer.
*/
static int vp8_enc_compose_one_frame(struct venc_vp8_inst *inst,
struct mtk_vcodec_mem *bs_buf,
unsigned int *bs_size)
{
unsigned int not_key;
u32 bs_frm_size;
u32 bs_hdr_len;
unsigned int ac_tag_size;
u8 ac_tag[MAX_AC_TAG_SIZE];
u32 tag;
bs_frm_size = vp8_enc_read_reg(inst, VENC_BITSTREAM_FRAME_SIZE);
bs_hdr_len = vp8_enc_read_reg(inst, VENC_BITSTREAM_HEADER_LEN);
/* if a frame is key frame, not_key is 0 */
not_key = !inst->vpu_inst.is_key_frm;
tag = (bs_hdr_len << 5) | 0x10 | not_key;
ac_tag[0] = tag & 0xff;
ac_tag[1] = (tag >> 8) & 0xff;
ac_tag[2] = (tag >> 16) & 0xff;
/* key frame */
if (not_key == 0) {
ac_tag_size = MAX_AC_TAG_SIZE;
ac_tag[3] = 0x9d;
ac_tag[4] = 0x01;
ac_tag[5] = 0x2a;
ac_tag[6] = inst->vsi->config.pic_w;
ac_tag[7] = inst->vsi->config.pic_w >> 8;
ac_tag[8] = inst->vsi->config.pic_h;
ac_tag[9] = inst->vsi->config.pic_h >> 8;
} else {
ac_tag_size = 3;
}
if (bs_buf->size < bs_hdr_len + bs_frm_size + ac_tag_size) {
mtk_vcodec_err(inst, "bitstream buf size is too small(%zu)",
bs_buf->size);
return -EINVAL;
}
/*
* (1) The vp8 bitstream header and body are generated by the HW vp8
* encoder separately at the same time. We cannot know the bitstream
* header length in advance.
* (2) From the vp8 spec, there is no stuffing byte allowed between the
* ac tag, bitstream header and bitstream body.
*/
memmove(bs_buf->va + bs_hdr_len + ac_tag_size,
bs_buf->va, bs_frm_size);
memcpy(bs_buf->va + ac_tag_size,
inst->work_bufs[VENC_VP8_VPU_WORK_BUF_BS_HEADER].va,
bs_hdr_len);
memcpy(bs_buf->va, ac_tag, ac_tag_size);
*bs_size = bs_frm_size + bs_hdr_len + ac_tag_size;
return 0;
}
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static int vp8_enc_encode_frame(struct venc_vp8_inst *inst,
struct venc_frm_buf *frm_buf,
struct mtk_vcodec_mem *bs_buf,
unsigned int *bs_size)
{
int ret = 0;
unsigned int irq_status;
mtk_vcodec_debug(inst, "->frm_cnt=%d", inst->frm_cnt);
ret = vpu_enc_encode(&inst->vpu_inst, 0, frm_buf, bs_buf, bs_size);
if (ret)
return ret;
irq_status = vp8_enc_wait_venc_done(inst);
if (irq_status != MTK_VENC_IRQ_STATUS_FRM) {
mtk_vcodec_err(inst, "irq_status=%d failed", irq_status);
return -EIO;
}
if (vp8_enc_compose_one_frame(inst, bs_buf, bs_size)) {
mtk_vcodec_err(inst, "vp8_enc_compose_one_frame failed");
return -EINVAL;
}
inst->frm_cnt++;
mtk_vcodec_debug(inst, "<-size=%d key_frm=%d", *bs_size,
inst->vpu_inst.is_key_frm);
return ret;
}
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static int vp8_enc_init(struct mtk_vcodec_ctx *ctx, unsigned long *handle)
{
int ret = 0;
struct venc_vp8_inst *inst;
inst = kzalloc(sizeof(*inst), GFP_KERNEL);
if (!inst)
return -ENOMEM;
inst->ctx = ctx;
inst->vpu_inst.ctx = ctx;
inst->vpu_inst.dev = ctx->dev->vpu_plat_dev;
inst->vpu_inst.id = IPI_VENC_VP8;
inst->hw_base = mtk_vcodec_get_reg_addr(inst->ctx, VENC_LT_SYS);
mtk_vcodec_debug_enter(inst);
ret = vpu_enc_init(&inst->vpu_inst);
inst->vsi = (struct venc_vp8_vsi *)inst->vpu_inst.vsi;
mtk_vcodec_debug_leave(inst);
if (ret)
kfree(inst);
else
(*handle) = (unsigned long)inst;
return ret;
}
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static int vp8_enc_encode(unsigned long handle,
enum venc_start_opt opt,
struct venc_frm_buf *frm_buf,
struct mtk_vcodec_mem *bs_buf,
struct venc_done_result *result)
{
int ret = 0;
struct venc_vp8_inst *inst = (struct venc_vp8_inst *)handle;
struct mtk_vcodec_ctx *ctx = inst->ctx;
mtk_vcodec_debug_enter(inst);
enable_irq(ctx->dev->enc_lt_irq);
switch (opt) {
case VENC_START_OPT_ENCODE_FRAME:
ret = vp8_enc_encode_frame(inst, frm_buf, bs_buf,
&result->bs_size);
if (ret)
goto encode_err;
result->is_key_frm = inst->vpu_inst.is_key_frm;
break;
default:
mtk_vcodec_err(inst, "opt not support:%d", opt);
ret = -EINVAL;
break;
}
encode_err:
disable_irq(ctx->dev->enc_lt_irq);
mtk_vcodec_debug_leave(inst);
return ret;
}
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static int vp8_enc_set_param(unsigned long handle,
enum venc_set_param_type type,
struct venc_enc_param *enc_prm)
{
int ret = 0;
struct venc_vp8_inst *inst = (struct venc_vp8_inst *)handle;
mtk_vcodec_debug(inst, "->type=%d", type);
switch (type) {
case VENC_SET_PARAM_ENC:
inst->vsi->config.input_fourcc = enc_prm->input_yuv_fmt;
inst->vsi->config.bitrate = enc_prm->bitrate;
inst->vsi->config.pic_w = enc_prm->width;
inst->vsi->config.pic_h = enc_prm->height;
inst->vsi->config.buf_w = enc_prm->buf_width;
inst->vsi->config.buf_h = enc_prm->buf_height;
inst->vsi->config.gop_size = enc_prm->gop_size;
inst->vsi->config.framerate = enc_prm->frm_rate;
inst->vsi->config.ts_mode = inst->ts_mode;
ret = vpu_enc_set_param(&inst->vpu_inst, type, enc_prm);
if (ret)
break;
if (inst->work_buf_allocated) {
vp8_enc_free_work_buf(inst);
inst->work_buf_allocated = false;
}
ret = vp8_enc_alloc_work_buf(inst);
if (ret)
break;
inst->work_buf_allocated = true;
break;
/*
* VENC_SET_PARAM_TS_MODE must be called before VENC_SET_PARAM_ENC
*/
case VENC_SET_PARAM_TS_MODE:
inst->ts_mode = 1;
mtk_vcodec_debug(inst, "set ts_mode");
break;
default:
ret = vpu_enc_set_param(&inst->vpu_inst, type, enc_prm);
break;
}
mtk_vcodec_debug_leave(inst);
return ret;
}
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static int vp8_enc_deinit(unsigned long handle)
{
int ret = 0;
struct venc_vp8_inst *inst = (struct venc_vp8_inst *)handle;
mtk_vcodec_debug_enter(inst);
ret = vpu_enc_deinit(&inst->vpu_inst);
if (inst->work_buf_allocated)
vp8_enc_free_work_buf(inst);
mtk_vcodec_debug_leave(inst);
kfree(inst);
return ret;
}
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static const struct venc_common_if venc_vp8_if = {
.init = vp8_enc_init,
.encode = vp8_enc_encode,
.set_param = vp8_enc_set_param,
.deinit = vp8_enc_deinit,
};
const struct venc_common_if *get_vp8_enc_comm_if(void);
const struct venc_common_if *get_vp8_enc_comm_if(void)
{
return &venc_vp8_if;
}
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