threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
187 lines
5.1 KiB
C
187 lines
5.1 KiB
C
/*
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* Copyright (c) 2017 MediaTek Inc.
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* Author: Yunfei Dong <yunfei.dong@mediatek.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef MTK_VCODEC_MEM_H
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#define MTK_VCODEC_MEM_H
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#include <media/videobuf2-dma-contig.h>
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#include <uapi/linux/mtk_vcu_controls.h>
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#include <linux/slab.h>
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#include <asm/cacheflush.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mailbox/cmdq-sec.h>
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#ifndef CONFIG_ARM64
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#include "mm/dma.h"
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#endif
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#ifndef dmac_map_area
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#define dmac_map_area __dma_map_area
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#endif
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#ifndef dmac_unmap_area
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#define dmac_unmap_area __dma_unmap_area
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#endif
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#ifndef dmac_flush_range
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#define dmac_flush_range __dma_flush_range
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#endif
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#define CODEC_MAX_BUFFER 512U
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#define CODEC_ALLOCATE_MAX_BUFFER_SIZE 0x8000000UL /*128MB*/
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#define CODEC_MSK(addr) ((addr >> PAGE_SHIFT) & 0xFFFF)
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/**
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* struct mtk_vcu_mem - memory buffer allocated in kernel
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*
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* @mem_priv: vcu allocated buffer vb2_dc_buf
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* @size: buffer size
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* @dbuf: io buffer dma_buff
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* @iova: io buffer iova
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*/
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struct mtk_vcu_mem {
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void *mem_priv;
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size_t size;
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struct dma_buf *dbuf;
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dma_addr_t iova;
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atomic_t ref_cnt;
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};
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struct vcu_pa_pages {
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unsigned long pa;
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unsigned long kva;
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atomic_t ref_cnt;
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struct list_head list;
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};
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/**
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* struct mtk_vcu_queue - the allocated buffer queue
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*
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* @vcu: struct mtk_vcu
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* @mmap_lock: the lock to protect allocated buffer
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* @dev: device
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* @num_buffers: allocated buffer number
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* @mem_ops: the file operation of memory allocated
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* @bufs: store the information of allocated buffers
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* @map_buf_pa: store map pa and it's flag
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*/
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struct mtk_vcu_queue {
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void *vcu;
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struct mutex mmap_lock;
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struct device *dev;
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struct device *cmdq_dev;
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unsigned int num_buffers;
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const struct vb2_mem_ops *mem_ops;
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struct mtk_vcu_mem bufs[CODEC_MAX_BUFFER];
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uint64_t map_buf_pa;
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struct vcu_pa_pages pa_pages;
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};
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/**
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* mtk_vcu_mem_init - just init vcu_queue
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*
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* @dev: vcu device.
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* @cmdq_dev: cmdq device.
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*
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* Return: Return NULL if it is failed.
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* otherwise it is vcu queue to store the allocated buffer
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**/
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struct mtk_vcu_queue *mtk_vcu_mem_init(struct device *dev,
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struct device *cmdq_dev);
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/**
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* mtk_vcu_mem_release - just release the vcu_queue
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*
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* @vcu_queue: the queue to store allocated buffer.
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*
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* Return: void
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**/
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void mtk_vcu_mem_release(struct mtk_vcu_queue *vcu_queue);
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/**
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* mtk_vcu_set_buffer - set the allocated buffer iova/va
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*
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* @vcu_queue: the queue to store allocated buffer.
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* @mem_buff_data: store iova/va.
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* @src_vb/dst_vb: set io buffer dma to vcu_queue for cache sync.
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*
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* Return: Return real address if it is ok, otherwise failed
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**/
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void *mtk_vcu_set_buffer(struct mtk_vcu_queue *vcu_queue,
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struct mem_obj *mem_buff_data, struct vb2_buffer *src_vb,
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struct vb2_buffer *dst_vb);
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/**
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* mtk_vcu_get_buffer/mtk_vcu_get_page - get the allocated buffer iova/va/pa
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*
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* @vcu_queue: the queue to store allocated buffer.
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* @mem_buff_data: store iova/va.
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*
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* Return: Return real address if it is ok, otherwise failed
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**/
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void *mtk_vcu_get_buffer(struct mtk_vcu_queue *vcu_queue,
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struct mem_obj *mem_buff_data);
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void *mtk_vcu_get_page(struct mtk_vcu_queue *vcu_queue,
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struct mem_obj *mem_buff_data);
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/**
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* mtk_vcu_free_buffer/mtk_vcu_free_page - just free unused buffer iova/va/pa
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*
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* @vcu_queue: the queue to store allocated buffer.
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* @mem_buff_data: store iova/va to free.
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*
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* Return: Return 0 if it is ok, otherwise failed
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**/
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int mtk_vcu_free_buffer(struct mtk_vcu_queue *vcu_queue,
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struct mem_obj *mem_buff_data);
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int mtk_vcu_free_page(struct mtk_vcu_queue *vcu_queue,
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struct mem_obj *mem_buff_data);
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/**
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* mtk_vcu_free_buffer - decreas reference count for mem_priv
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*
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* @vcu_queue: the queue to store allocated buffer.
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* @mem_buff_data: store iova/va to free.
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*
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* Return: Return 0 if it is ok, otherwise failed
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**/
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void mtk_vcu_buffer_ref_dec(struct mtk_vcu_queue *vcu_queue,
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void *mem_priv);
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/**
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* vcu_buffer_flush_all - flush all VCU buffer cache for device
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*
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* @dev: vcu device.
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* @vcu_queue: the queue to store allocated buffer.
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*
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* Return: Return 0 if it is ok, otherwise failed
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**/
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int vcu_buffer_flush_all(struct device *dev, struct mtk_vcu_queue *vcu_queue);
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/**
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* vcu_buffer_cache_sync - VCU buffer cache sync by dma_addr for device
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*
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* @dev: vcu device.
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* @vcu_queue: the queue to store allocated buffer.
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* @dma_addr: the buffer to be flushed dma addr
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* @dma_addr: the corresponding flushed size
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* @op: DMA_TO_DEVICE or DMA_FROM_DEVICE
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*
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* Return: Return 0 if it is ok, otherwise failed
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**/
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int vcu_buffer_cache_sync(struct device *dev, struct mtk_vcu_queue *vcu_queue,
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dma_addr_t dma_addr, size_t size, int op);
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#endif
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