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72 lines
2.0 KiB
72 lines
2.0 KiB
7 months ago
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* NextChip Inc. DMA_CTRL driver v1.0
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*
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* Copyright (C) 2024 NextChip Inc. All rights reserved
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*/
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#ifndef __NC_DMABUF_CTRL_H__
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#define __NC_DMABUF_CTRL_H__
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enum dmabuf_transfer_opt
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{
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TRANSFER_OPT_NOWAIT,
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TRANSFER_OPT_WAIT
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};
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struct dmabuf_config
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{
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size_t buffer_size;
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int dmabuf_fd;
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};
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struct dmabuf_transfer
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{
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int src;
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int dst;
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enum dmabuf_transfer_opt opt;
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};
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struct dmabuf_rw
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{
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int dmabuf_fd;
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void *userbuf;
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size_t buffer_size;
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};
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struct dmabuf_addr
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{
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int dmabuf_fd;
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uint32_t phys_addr;
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void *virt_addr;
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};
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struct dmabuf_map_phys
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{
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int dmabuf_fd;
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uint32_t phys_addr;
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size_t buffer_size;
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};
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struct dmabuf_cacheable
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{
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int dmabuf_fd;
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bool is_use;
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};
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#define MAX_CHAN 8
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#define IOCTL_DMA_BUF_TRANSFER_SUBMIT _IOR('C', 0, struct dmabuf_transfer)
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#define IOCTL_DMA_BUF_CREATE_FD _IOWR('C', 1, struct dmabuf_config)
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#define IOCTL_DMA_BUF_TRANSFER_CHECK _IOWR('C', 2, int)
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#define IOCTL_DMA_BUF_ALLOC_CHAN _IOR('C', 3, int)
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#define IOCTL_DMA_BUF_DELETE_FD _IOR('C', 4, int)
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#define IOCTL_DMA_BUF_WRITE_FD _IOR('C', 5, struct dmabuf_rw)
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#define IOCTL_DMA_BUF_READ_FD _IOWR('C', 6, struct dmabuf_rw)
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#define IOCTL_DMA_BUF_GET_ADDR _IOWR('C', 7, struct dmabuf_addr)
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#define IOCTL_DMA_BUF_SET_CACHEABLE _IOR('C', 8, struct dmabuf_cacheable)
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#define IOCTL_DMA_BUF_BEGIN_CPU_ACCESS _IOR('C', 9, int)
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#define IOCTL_DMA_BUF_END_CPU_ACCESS _IOR('C', 10, int)
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#define IOCTL_DMA_BUF_PHYS_MAP_CREATE_FD _IOWR('C', 11, struct dmabuf_map_phys)
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#endif /* __NC_DMABUF_CTRL_H__ */
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