cregit-Linux how code gets into the kernel

Release 4.11 drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c

/*
 * Copyright (c) 2016 MediaTek Inc.
 * Author: Daniel Hsiao <daniel.hsiao@mediatek.com>
 *      Kai-Sean Yang <kai-sean.yang@mediatek.com>
 *      Tiffany Lin <tiffany.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/fs.h>
#include <linux/slab.h>
#include <linux/syscalls.h>
#include <linux/delay.h>
#include <linux/time.h>

#include "../mtk_vcodec_intr.h"
#include "../vdec_drv_base.h"
#include "../vdec_vpu_if.h"


#define VP9_SUPER_FRAME_BS_SZ 64

#define MAX_VP9_DPB_SIZE	9


#define REFS_PER_FRAME 3

#define MAX_NUM_REF_FRAMES 8

#define VP9_MAX_FRM_BUF_NUM 9

#define VP9_MAX_FRM_BUF_NODE_NUM (VP9_MAX_FRM_BUF_NUM * 2)

/**
 * struct vp9_dram_buf - contains buffer info for vpu
 * @va : cpu address
 * @pa : iova address
 * @sz : buffer size
 * @padding : for 64 bytes alignment
 */

struct vp9_dram_buf {
	
unsigned long va;
	
unsigned long pa;
	
unsigned int sz;
	
unsigned int padding;
};

/**
 * struct vp9_fb_info - contains frame buffer info
 * @fb : frmae buffer
 * @reserved : reserved field used by vpu
 */

struct vp9_fb_info {
	
struct vdec_fb *fb;
	
unsigned int reserved[32];
};

/**
 * struct vp9_ref_cnt_buf - contains reference buffer information
 * @buf : referenced frame buffer
 * @ref_cnt : referenced frame buffer's reference count.
 *      When reference count=0, remove it from reference list
 */

struct vp9_ref_cnt_buf {
	
struct vp9_fb_info buf;
	
unsigned int ref_cnt;
};

/**
 * struct vp9_fb_info - contains current frame's reference buffer information
 * @buf : reference buffer
 * @idx : reference buffer index to frm_bufs
 * @reserved : reserved field used by vpu
 */

struct vp9_ref_buf {
	
struct vp9_fb_info *buf;
	
unsigned int idx;
	
unsigned int reserved[6];
};

/**
 * struct vp9_fb_info - contains frame buffer info
 * @fb : super frame reference frame buffer
 * @used : this reference frame info entry is used
 * @padding : for 64 bytes size align
 */

struct vp9_sf_ref_fb {
	
struct vdec_fb fb;
	
int used;
	
int padding;
};

/*
 * struct vdec_vp9_vsi - shared buffer between host and VPU firmware
 *      AP-W/R : AP is writer/reader on this item
 *      VPU-W/R: VPU is write/reader on this item
 * @sf_bs_buf : super frame backup buffer (AP-W, VPU-R)
 * @sf_ref_fb : record supoer frame reference buffer information
 *      (AP-R/W, VPU-R/W)
 * @sf_next_ref_fb_idx : next available super frame (AP-W, VPU-R)
 * @sf_frm_cnt : super frame count, filled by vpu (AP-R, VPU-W)
 * @sf_frm_offset : super frame offset, filled by vpu (AP-R, VPU-W)
 * @sf_frm_sz : super frame size, filled by vpu (AP-R, VPU-W)
 * @sf_frm_idx : current super frame (AP-R, VPU-W)
 * @sf_init : inform super frame info already parsed by vpu (AP-R, VPU-W)
 * @fb : capture buffer (AP-W, VPU-R)
 * @bs : bs buffer (AP-W, VPU-R)
 * @cur_fb : current show capture buffer (AP-R/W, VPU-R/W)
 * @pic_w : picture width (AP-R, VPU-W)
 * @pic_h : picture height (AP-R, VPU-W)
 * @buf_w : codec width (AP-R, VPU-W)
 * @buf_h : coded height (AP-R, VPU-W)
 * @buf_sz_y_bs : ufo compressed y plane size (AP-R, VPU-W)
 * @buf_sz_c_bs : ufo compressed cbcr plane size (AP-R, VPU-W)
 * @buf_len_sz_y : size used to store y plane ufo info (AP-R, VPU-W)
 * @buf_len_sz_c : size used to store cbcr plane ufo info (AP-R, VPU-W)

 * @profile : profile sparsed from vpu (AP-R, VPU-W)
 * @show_frame : display this frame or not (AP-R, VPU-W)
 * @show_existing_frame : inform this frame is show existing frame
 *      (AP-R, VPU-W)
 * @frm_to_show_idx : index to show frame (AP-R, VPU-W)

 * @refresh_frm_flags : indicate when frame need to refine reference count
 *      (AP-R, VPU-W)
 * @resolution_changed : resolution change in this frame (AP-R, VPU-W)

 * @frm_bufs : maintain reference buffer info (AP-R/W, VPU-R/W)
 * @ref_frm_map : maintain reference buffer map info (AP-R/W, VPU-R/W)
 * @new_fb_idx : index to frm_bufs array (AP-R, VPU-W)
 * @frm_num : decoded frame number, include sub-frame count (AP-R, VPU-W)
 * @mv_buf : motion vector working buffer (AP-W, VPU-R)
 * @frm_refs : maintain three reference buffer info (AP-R/W, VPU-R/W)
 */

struct vdec_vp9_vsi {
	
unsigned char sf_bs_buf[VP9_SUPER_FRAME_BS_SZ];
	
struct vp9_sf_ref_fb sf_ref_fb[VP9_MAX_FRM_BUF_NUM-1];
	
int sf_next_ref_fb_idx;
	
unsigned int sf_frm_cnt;
	
unsigned int sf_frm_offset[VP9_MAX_FRM_BUF_NUM-1];
	
unsigned int sf_frm_sz[VP9_MAX_FRM_BUF_NUM-1];
	
unsigned int sf_frm_idx;
	
unsigned int sf_init;
	
struct vdec_fb fb;
	
struct mtk_vcodec_mem bs;
	
struct vdec_fb cur_fb;
	
unsigned int pic_w;
	
unsigned int pic_h;
	
unsigned int buf_w;
	
unsigned int buf_h;
	
unsigned int buf_sz_y_bs;
	
unsigned int buf_sz_c_bs;
	
unsigned int buf_len_sz_y;
	
unsigned int buf_len_sz_c;
	
unsigned int profile;
	
unsigned int show_frame;
	
unsigned int show_existing_frame;
	
unsigned int frm_to_show_idx;
	
unsigned int refresh_frm_flags;
	
unsigned int resolution_changed;

	
struct vp9_ref_cnt_buf frm_bufs[VP9_MAX_FRM_BUF_NUM];
	
int ref_frm_map[MAX_NUM_REF_FRAMES];
	
unsigned int new_fb_idx;
	
unsigned int frm_num;
	
struct vp9_dram_buf mv_buf;

	
struct vp9_ref_buf frm_refs[REFS_PER_FRAME];
};

/*
 * struct vdec_vp9_inst - vp9 decode instance
 * @mv_buf : working buffer for mv
 * @dec_fb : vdec_fb node to link fb to different fb_xxx_list
 * @available_fb_node_list : current available vdec_fb node
 * @fb_use_list : current used or referenced vdec_fb
 * @fb_free_list : current available to free vdec_fb
 * @fb_disp_list : current available to display vdec_fb
 * @cur_fb : current frame buffer
 * @ctx : current decode context
 * @vpu : vpu instance information
 * @vsi : shared buffer between host and VPU firmware
 * @total_frm_cnt : total frame count, it do not include sub-frames in super
 *          frame
 * @mem : instance memory information
 */

struct vdec_vp9_inst {
	
struct mtk_vcodec_mem mv_buf;

	
struct vdec_fb_node dec_fb[VP9_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 vdec_fb *cur_fb;
	
struct mtk_vcodec_ctx *ctx;
	
struct vdec_vpu_inst vpu;
	
struct vdec_vp9_vsi *vsi;
	
unsigned int total_frm_cnt;
	
struct mtk_vcodec_mem mem;
};


static bool vp9_is_sf_ref_fb(struct vdec_vp9_inst *inst, struct vdec_fb *fb) { int i; struct vdec_vp9_vsi *vsi = inst->vsi; for (i = 0; i < ARRAY_SIZE(vsi->sf_ref_fb); i++) { if (fb == &vsi->sf_ref_fb[i].fb) return true; } return false; }

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static struct vdec_fb *vp9_rm_from_fb_use_list(struct vdec_vp9_inst *inst, void *addr) { struct vdec_fb *fb = NULL; struct vdec_fb_node *node; list_for_each_entry(node, &inst->fb_use_list, list) { fb = (struct vdec_fb *)node->fb; if (fb->base_y.va == addr) { list_move_tail(&node->list, &inst->available_fb_node_list); break; } } return fb; }

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static void vp9_add_to_fb_free_list(struct vdec_vp9_inst *inst, struct vdec_fb *fb) { struct vdec_fb_node *node; if (fb) { node = list_first_entry_or_null(&inst->available_fb_node_list, struct vdec_fb_node, list); if (node) { node->fb = fb; list_move_tail(&node->list, &inst->fb_free_list); } } else { mtk_vcodec_debug(inst, "No free fb node"); } }

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static void vp9_free_sf_ref_fb(struct vdec_fb *fb) { struct vp9_sf_ref_fb *sf_ref_fb = container_of(fb, struct vp9_sf_ref_fb, fb); sf_ref_fb->used = 0; }

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static void vp9_ref_cnt_fb(struct vdec_vp9_inst *inst, int *idx, int new_idx) { struct vdec_vp9_vsi *vsi = inst->vsi; int ref_idx = *idx; if (ref_idx >= 0 && vsi->frm_bufs[ref_idx].ref_cnt > 0) { vsi->frm_bufs[ref_idx].ref_cnt--; if (vsi->frm_bufs[ref_idx].ref_cnt == 0) { if (!vp9_is_sf_ref_fb(inst, vsi->frm_bufs[ref_idx].buf.fb)) { struct vdec_fb *fb; fb = vp9_rm_from_fb_use_list(inst, vsi->frm_bufs[ref_idx].buf.fb->base_y.va); vp9_add_to_fb_free_list(inst, fb); } else vp9_free_sf_ref_fb( vsi->frm_bufs[ref_idx].buf.fb); } } *idx = new_idx; vsi->frm_bufs[new_idx].ref_cnt++; }

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static void vp9_free_all_sf_ref_fb(struct vdec_vp9_inst *inst) { int i; struct vdec_vp9_vsi *vsi = inst->vsi; for (i = 0; i < ARRAY_SIZE(vsi->sf_ref_fb); i++) { if (vsi->sf_ref_fb[i].fb.base_y.va) { mtk_vcodec_mem_free(inst->ctx, &vsi->sf_ref_fb[i].fb.base_y); mtk_vcodec_mem_free(inst->ctx, &vsi->sf_ref_fb[i].fb.base_c); vsi->sf_ref_fb[i].used = 0; } } }

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/* For each sub-frame except the last one, the driver will dynamically * allocate reference buffer by calling vp9_get_sf_ref_fb() * The last sub-frame will use the original fb provided by the * vp9_dec_decode() interface */
static int vp9_get_sf_ref_fb(struct vdec_vp9_inst *inst) { int idx; struct mtk_vcodec_mem *mem_basy_y; struct mtk_vcodec_mem *mem_basy_c; struct vdec_vp9_vsi *vsi = inst->vsi; for (idx = 0; idx < ARRAY_SIZE(vsi->sf_ref_fb); idx++) { if (vsi->sf_ref_fb[idx].fb.base_y.va && vsi->sf_ref_fb[idx].used == 0) { return idx; } } for (idx = 0; idx < ARRAY_SIZE(vsi->sf_ref_fb); idx++) { if (vsi->sf_ref_fb[idx].fb.base_y.va == NULL) break; } if (idx == ARRAY_SIZE(vsi->sf_ref_fb)) { mtk_vcodec_err(inst, "List Full"); return -1; } mem_basy_y = &vsi->sf_ref_fb[idx].fb.base_y; mem_basy_y->size = vsi->buf_sz_y_bs + vsi->buf_len_sz_y; if (mtk_vcodec_mem_alloc(inst->ctx, mem_basy_y)) { mtk_vcodec_err(inst, "Cannot allocate sf_ref_buf y_buf"); return -1; } mem_basy_c = &vsi->sf_ref_fb[idx].fb.base_c; mem_basy_c->size = vsi->buf_sz_c_bs + vsi->buf_len_sz_c; if (mtk_vcodec_mem_alloc(inst->ctx, mem_basy_c)) { mtk_vcodec_err(inst, "Cannot allocate sf_ref_fb c_buf"); return -1; } vsi->sf_ref_fb[idx].used = 0; return idx; }

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static bool vp9_alloc_work_buf(struct vdec_vp9_inst *inst) { struct vdec_vp9_vsi *vsi = inst->vsi; int result; struct mtk_vcodec_mem *mem; unsigned int max_pic_w; unsigned int max_pic_h; if (!(inst->ctx->dev->dec_capability & VCODEC_CAPABILITY_4K_DISABLED)) { max_pic_w = VCODEC_DEC_4K_CODED_WIDTH; max_pic_h = VCODEC_DEC_4K_CODED_HEIGHT; } else { max_pic_w = MTK_VDEC_MAX_W; max_pic_h = MTK_VDEC_MAX_H; } if ((vsi->pic_w > max_pic_w) || (vsi->pic_h > max_pic_h)) { mtk_vcodec_err(inst, "Invalid w/h %d/%d", vsi->pic_w, vsi->pic_h); return false; } mtk_vcodec_debug(inst, "BUF CHG(%d): w/h/sb_w/sb_h=%d/%d/%d/%d", vsi->resolution_changed, vsi->pic_w, vsi->pic_h, vsi->buf_w, vsi->buf_h); mem = &inst->mv_buf; if (mem->va) mtk_vcodec_mem_free(inst->ctx, mem); mem->size = ((vsi->buf_w / 64) * (vsi->buf_h / 64) + 2) * 36 * 16; result = mtk_vcodec_mem_alloc(inst->ctx, mem); if (result) { mem->size = 0; mtk_vcodec_err(inst, "Cannot allocate mv_buf"); return false; } /* Set the va again */ vsi->mv_buf.va = (unsigned long)mem->va; vsi->mv_buf.pa = (unsigned long)mem->dma_addr; vsi->mv_buf.sz = (unsigned int)mem->size; vp9_free_all_sf_ref_fb(inst); vsi->sf_next_ref_fb_idx = vp9_get_sf_ref_fb(inst); return true; }

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static bool vp9_add_to_fb_disp_list(struct vdec_vp9_inst *inst, struct vdec_fb *fb) { struct vdec_fb_node *node; if (!fb) { mtk_vcodec_err(inst, "fb == NULL"); return false; } node = list_first_entry_or_null(&inst->available_fb_node_list, struct vdec_fb_node, list); if (node) { node->fb = fb; list_move_tail(&node->list, &inst->fb_disp_list); } else { mtk_vcodec_err(inst, "No available fb node"); return false; } return true; }

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/* If any buffer updating is signaled it should be done here. */
static void vp9_swap_frm_bufs(struct vdec_vp9_inst *inst) { struct vdec_vp9_vsi *vsi = inst->vsi; struct vp9_fb_info *frm_to_show; int ref_index = 0, mask; for (mask = vsi->refresh_frm_flags; mask; mask >>= 1) { if (mask & 1) vp9_ref_cnt_fb(inst, &vsi->ref_frm_map[ref_index], vsi->new_fb_idx); ++ref_index; } frm_to_show = &vsi->frm_bufs[vsi->new_fb_idx].buf; vsi->frm_bufs[vsi->new_fb_idx].ref_cnt--; if (frm_to_show->fb != inst->cur_fb) { /* This frame is show exist frame and no decode output * copy frame data from frm_to_show to current CAPTURE * buffer */ if ((frm_to_show->fb != NULL) && (inst->cur_fb->base_y.size >= frm_to_show->fb->base_y.size)) { memcpy((void *)inst->cur_fb->base_y.va, (void *)frm_to_show->fb->base_y.va, vsi->buf_w * vsi->buf_h); memcpy((void *)inst->cur_fb->base_c.va, (void *)frm_to_show->fb->base_c.va, vsi->buf_w * vsi->buf_h / 2); } else { /* After resolution change case, current CAPTURE buffer * may have less buffer size than frm_to_show buffer * size */ if (frm_to_show->fb != NULL) mtk_vcodec_err(inst, "inst->cur_fb->base_y.size=%zu, frm_to_show->fb.base_y.size=%zu", inst->cur_fb->base_y.size, frm_to_show->fb->base_y.size); } if (!vp9_is_sf_ref_fb(inst, inst->cur_fb)) { if (vsi->show_frame) vp9_add_to_fb_disp_list(inst, inst->cur_fb); } } else { if (!vp9_is_sf_ref_fb(inst, inst->cur_fb)) { if (vsi->show_frame) vp9_add_to_fb_disp_list(inst, frm_to_show->fb); } } /* when ref_cnt ==0, move this fb to fb_free_list. v4l2 driver will * clean fb_free_list */ if (vsi->frm_bufs[vsi->new_fb_idx].ref_cnt == 0) { if (!vp9_is_sf_ref_fb( inst, vsi->frm_bufs[vsi->new_fb_idx].buf.fb)) { struct vdec_fb *fb; fb = vp9_rm_from_fb_use_list(inst, vsi->frm_bufs[vsi->new_fb_idx].buf.fb->base_y.va); vp9_add_to_fb_free_list(inst, fb); } else { vp9_free_sf_ref_fb( vsi->frm_bufs[vsi->new_fb_idx].buf.fb); } } /* if this super frame and it is not last sub-frame, get next fb for * sub-frame decode */ if (vsi->sf_frm_cnt > 0 && vsi->sf_frm_idx != vsi->sf_frm_cnt - 1) vsi->sf_next_ref_fb_idx = vp9_get_sf_ref_fb(inst); }

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static bool vp9_wait_dec_end(struct vdec_vp9_inst *inst) { struct mtk_vcodec_ctx *ctx = inst->ctx; mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED, WAIT_INTR_TIMEOUT_MS); if (ctx->irq_status & MTK_VDEC_IRQ_STATUS_DEC_SUCCESS) return true; else return false; }

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static struct vdec_vp9_inst *vp9_alloc_inst(struct mtk_vcodec_ctx *ctx) { int result; struct mtk_vcodec_mem mem; struct vdec_vp9_inst *inst; memset(&mem, 0, sizeof(mem)); mem.size = sizeof(struct vdec_vp9_inst); result = mtk_vcodec_mem_alloc(ctx, &mem); if (result) return NULL; inst = mem.va; inst->mem = mem; return inst; }

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static void vp9_free_inst(struct vdec_vp9_inst *inst) { struct mtk_vcodec_mem mem; mem = inst->mem; if (mem.va) mtk_vcodec_mem_free(inst->ctx, &mem); }

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static bool vp9_decode_end_proc(struct vdec_vp9_inst *inst) { struct vdec_vp9_vsi *vsi = inst->vsi; bool ret = false; if (!vsi->show_existing_frame) { ret = vp9_wait_dec_end(inst); if (!ret) { mtk_vcodec_err(inst, "Decode failed, Decode Timeout @[%d]", vsi->frm_num); return false; } if (vpu_dec_end(&inst->vpu)) { mtk_vcodec_err(inst, "vp9_dec_vpu_end failed"); return false; } mtk_vcodec_debug(inst, "Decode Ok @%d (%d/%d)", vsi->frm_num, vsi->pic_w, vsi->pic_h); } else { mtk_vcodec_debug(inst, "Decode Ok @%d (show_existing_frame)", vsi->frm_num); } vp9_swap_frm_bufs(inst); vsi->frm_num++; return true; }

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static bool vp9_is_last_sub_frm(struct vdec_vp9_inst *inst) { struct vdec_vp9_vsi *vsi = inst->vsi; if (vsi->sf_frm_cnt <= 0 || vsi->sf_frm_idx == vsi->sf_frm_cnt) return true; return false; }

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static struct vdec_fb *vp9_rm_from_fb_disp_list(struct vdec_vp9_inst *inst) { struct vdec_fb_node *node; struct vdec_fb *fb = NULL; node = list_first_entry_or_null(&inst->fb_disp_list, struct vdec_fb_node, list); if (node) { fb = (struct vdec_fb *)node->fb; fb->status |= FB_ST_DISPLAY; list_move_tail(&node->list, &inst->available_fb_node_list); mtk_vcodec_debug(inst, "[FB] get disp fb %p st=%d", node->fb, fb->status); } else mtk_vcodec_debug(inst, "[FB] there is no disp fb"); return fb; }

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static bool vp9_add_to_fb_use_list(struct vdec_vp9_inst *inst, struct vdec_fb *fb) { struct vdec_fb_node *node; if (!fb) { mtk_vcodec_debug(inst, "fb == NULL"); return false; } node = list_first_entry_or_null(&inst->available_fb_node_list, struct vdec_fb_node, list); if (node) { node->fb = fb; list_move_tail(&node->list, &inst->fb_use_list); } else { mtk_vcodec_err(inst, "No free fb node"); return false; } return true; }

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static void vp9_reset(struct vdec_vp9_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); vp9_free_all_sf_ref_fb(inst); inst->vsi->sf_next_ref_fb_idx = vp9_get_sf_ref_fb(inst); if (vpu_dec_reset(&inst->vpu)) mtk_vcodec_err(inst, "vp9_dec_vpu_reset failed"); /* Set the va again, since vpu_dec_reset will clear mv_buf in vpu */ inst->vsi->mv_buf.va = (unsigned long)inst->mv_buf.va; inst->vsi->mv_buf.pa = (unsigned long)inst->mv_buf.dma_addr; inst->vsi->mv_buf.sz = (unsigned long)inst->mv_buf.size; }

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static void init_all_fb_lists(struct vdec_vp9_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); } }

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static void get_pic_info(struct vdec_vp9_inst *inst, struct vdec_pic_info *pic) { pic->y_bs_sz = inst->vsi->buf_sz_y_bs; pic->c_bs_sz = inst->vsi->buf_sz_c_bs; pic->y_len_sz = inst->vsi->buf_len_sz_y; pic->c_len_sz = inst->vsi->buf_len_sz_c; pic->pic_w = inst->vsi->pic_w; pic->pic_h = inst->vsi->pic_h; pic->buf_w = inst->vsi->buf_w; pic->buf_h = inst->vsi->buf_h; mtk_vcodec_debug(inst, "pic(%d, %d), buf(%d, %d)", pic->pic_w, pic->pic_h, pic->buf_w, pic->buf_h); mtk_vcodec_debug(inst, "Y(%d, %d), C(%d, %d)", pic->y_bs_sz, pic->y_len_sz, pic->c_bs_sz, pic->c_len_sz); }

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static void get_disp_fb(struct vdec_vp9_inst *inst, struct vdec_fb **out_fb) { *out_fb = vp9_rm_from_fb_disp_list(inst); if (*out_fb) (*out_fb)->status |= FB_ST_DISPLAY; }

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static void get_free_fb(struct vdec_vp9_inst *inst, struct vdec_fb **out_fb) { struct vdec_fb_node *node; struct vdec_fb *fb = NULL; 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_vcodec_debug(inst, "[FB] get free fb %p st=%d", node->fb, fb->status); } else { mtk_vcodec_debug(inst, "[FB] there is no free fb"); } *out_fb = fb; }

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static void vdec_vp9_deinit(unsigned long h_vdec) { struct vdec_vp9_inst *inst = (struct vdec_vp9_inst *)h_vdec; struct mtk_vcodec_mem *mem; int ret = 0; ret = vpu_dec_deinit(&inst->vpu); if (ret) mtk_vcodec_err(inst, "vpu_dec_deinit failed"); mem = &inst->mv_buf; if (mem->va) mtk_vcodec_mem_free(inst->ctx, mem); vp9_free_all_sf_ref_fb(inst); vp9_free_inst(inst); }

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static int vdec_vp9_init(struct mtk_vcodec_ctx *ctx, unsigned long *h_vdec) { struct vdec_vp9_inst *inst; inst = vp9_alloc_inst(ctx); if (!inst) return -ENOMEM; inst->total_frm_cnt = 0; inst->ctx = ctx; inst->vpu.id = IPI_VDEC_VP9; inst->vpu.dev = ctx->dev->vpu_plat_dev; inst->vpu.ctx = ctx; inst->vpu.handler = vpu_dec_ipi_handler; if (vpu_dec_init(&inst->vpu)) { mtk_vcodec_err(inst, "vp9_dec_vpu_init failed"); goto err_deinit_inst; } inst->vsi = (struct vdec_vp9_vsi *)inst->vpu.vsi; init_all_fb_lists(inst); (*h_vdec) = (unsigned long)inst; return 0; err_deinit_inst: vp9_free_inst(inst); return -EINVAL; }

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static int vdec_vp9_decode(unsigned long h_vdec, struct mtk_vcodec_mem *bs, struct vdec_fb *fb, bool *res_chg) { int ret = 0; struct vdec_vp9_inst *inst = (struct vdec_vp9_inst *)h_vdec; struct vdec_vp9_vsi *vsi = inst->vsi; u32 data[3]; int i; *res_chg = false; if ((bs == NULL) && (fb == NULL)) { mtk_vcodec_debug(inst, "[EOS]"); vp9_reset(inst); return ret; } if (bs == NULL) { mtk_vcodec_err(inst, "bs == NULL"); return -EINVAL; } mtk_vcodec_debug(inst, "Input BS Size = %zu", bs->size); while (1) { struct vdec_fb *cur_fb = NULL; data[0] = *((unsigned int *)bs->va); data[1] = *((unsigned int *)(bs->va + 4)); data[2] = *((unsigned int *)(bs->va + 8)); vsi->bs = *bs; if (fb) vsi->fb = *fb; if (!vsi->sf_init) { unsigned int sf_bs_sz; unsigned int sf_bs_off; unsigned char *sf_bs_src; unsigned char *sf_bs_dst; sf_bs_sz = bs->size > VP9_SUPER_FRAME_BS_SZ ? VP9_SUPER_FRAME_BS_SZ : bs->size; sf_bs_off = VP9_SUPER_FRAME_BS_SZ - sf_bs_sz; sf_bs_src = bs->va + bs->size - sf_bs_sz; sf_bs_dst = vsi->sf_bs_buf + sf_bs_off; memcpy(sf_bs_dst, sf_bs_src, sf_bs_sz); } else { if ((vsi->sf_frm_cnt > 0) && (vsi->sf_frm_idx < vsi->sf_frm_cnt)) { unsigned int idx = vsi->sf_frm_idx; memcpy((void *)bs->va, (void *)(bs->va + vsi->sf_frm_offset[idx]), vsi->sf_frm_sz[idx]); } } ret = vpu_dec_start(&inst->vpu, data, 3); if (ret) { mtk_vcodec_err(inst, "vpu_dec_start failed"); goto DECODE_ERROR; } if (vsi->resolution_changed) { if (!vp9_alloc_work_buf(inst)) { ret = -EINVAL; goto DECODE_ERROR; } } if (vsi->sf_frm_cnt > 0) { cur_fb = &vsi->sf_ref_fb[vsi->sf_next_ref_fb_idx].fb; if (vsi->sf_frm_idx < vsi->sf_frm_cnt) inst->cur_fb = cur_fb; else inst->cur_fb = fb; } else { inst->cur_fb = fb; } vsi->frm_bufs[vsi->new_fb_idx].buf.fb = inst->cur_fb; if (!vp9_is_sf_ref_fb(inst, inst->cur_fb)) vp9_add_to_fb_use_list(inst, inst->cur_fb); mtk_vcodec_debug(inst, "[#pic %d]", vsi->frm_num); if (vsi->show_existing_frame) mtk_vcodec_debug(inst, "drv->new_fb_idx=%d, drv->frm_to_show_idx=%d", vsi->new_fb_idx, vsi->frm_to_show_idx); if (vsi->show_existing_frame && (vsi->frm_to_show_idx < VP9_MAX_FRM_BUF_NUM)) { mtk_vcodec_err(inst, "Skip Decode drv->new_fb_idx=%d, drv->frm_to_show_idx=%d", vsi->new_fb_idx, vsi->frm_to_show_idx); vp9_ref_cnt_fb(inst, &vsi->new_fb_idx, vsi->frm_to_show_idx); ret = -EINVAL; goto DECODE_ERROR; } /* VPU assign the buffer pointer in its address space, * reassign here */ for (i = 0; i < ARRAY_SIZE(vsi->frm_refs); i++) { unsigned int idx = vsi->frm_refs[i].idx; vsi->frm_refs[i].buf = &vsi->frm_bufs[idx].buf; } if (vsi->resolution_changed) { *res_chg = true; mtk_vcodec_debug(inst, "VDEC_ST_RESOLUTION_CHANGED"); ret = 0; goto DECODE_ERROR; } if (vp9_decode_end_proc(inst) != true) { mtk_vcodec_err(inst, "vp9_decode_end_proc"); ret = -EINVAL; goto DECODE_ERROR; } if (vp9_is_last_sub_frm(inst)) break; } inst->total_frm_cnt++; DECODE_ERROR: if (ret < 0) vp9_add_to_fb_free_list(inst, fb); return ret; }

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static void get_crop_info(struct vdec_vp9_inst *inst, struct v4l2_rect *cr) { cr->left = 0; cr->top = 0; cr->width = inst->vsi->pic_w; cr->height = inst->vsi->pic_h; mtk_vcodec_debug(inst, "get crop info l=%d, t=%d, w=%d, h=%d\n", cr->left, cr->top, cr->width, cr->height); }

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static int vdec_vp9_get_param(unsigned long h_vdec, enum vdec_get_param_type type, void *out) { struct vdec_vp9_inst *inst = (struct vdec_vp9_inst *)h_vdec; int ret = 0; 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_DPB_SIZE: *((unsigned int *)out) = MAX_VP9_DPB_SIZE; break; case GET_PARAM_CROP_INFO: get_crop_info(inst, out); break; default: mtk_vcodec_err(inst, "not supported param type %d", type); ret = -EINVAL; break; } return ret; }

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static struct vdec_common_if vdec_vp9_if = { vdec_vp9_init, vdec_vp9_decode, vdec_vp9_get_param, vdec_vp9_deinit, }; struct vdec_common_if *get_vp9_dec_comm_if(void);
struct vdec_common_if *get_vp9_dec_comm_if(void) { return &vdec_vp9_if; }

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