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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2019 Raspberry Pi (Trading) Ltd. All rights reserved.
*
* Based on vmcs_sm_ioctl.h Copyright Broadcom Corporation.
*/
#ifndef __VC_SM_CMA_IOCTL_H
#define __VC_SM_CMA_IOCTL_H
/* ---- Include Files ---------------------------------------------------- */
#if defined(__KERNEL__)
#include <linux/types.h> /* Needed for standard types */
#else
#include <stdint.h>
#endif
#include <linux/ioctl.h>
/* ---- Constants and Types ---------------------------------------------- */
#define VC_SM_CMA_RESOURCE_NAME 32
#define VC_SM_CMA_RESOURCE_NAME_DEFAULT "sm-host-resource"
/* Type define used to create unique IOCTL number */
#define VC_SM_CMA_MAGIC_TYPE 'J'
/* IOCTL commands on /dev/vc-sm-cma */
enum vc_sm_cma_cmd_e {
VC_SM_CMA_CMD_ALLOC = 0x5A, /* Start at 0x5A arbitrarily */
VC_SM_CMA_CMD_IMPORT_DMABUF,
VC_SM_CMA_CMD_CLEAN_INVALID2,
VC_SM_CMA_CMD_LAST /* Do not delete */
};
/* Cache type supported, conveniently matches the user space definition in
* user-vcsm.h.
*/
enum vc_sm_cma_cache_e {
VC_SM_CMA_CACHE_NONE,
VC_SM_CMA_CACHE_HOST,
VC_SM_CMA_CACHE_VC,
VC_SM_CMA_CACHE_BOTH,
};
/* IOCTL Data structures */
struct vc_sm_cma_ioctl_alloc {
/* user -> kernel */
__u32 size;
__u32 num;
__u32 cached; /* enum vc_sm_cma_cache_e */
__u32 pad;
__u8 name[VC_SM_CMA_RESOURCE_NAME];
/* kernel -> user */
__s32 handle;
__u32 vc_handle;
__u64 dma_addr;
};
struct vc_sm_cma_ioctl_import_dmabuf {
/* user -> kernel */
__s32 dmabuf_fd;
__u32 cached; /* enum vc_sm_cma_cache_e */
__u8 name[VC_SM_CMA_RESOURCE_NAME];
/* kernel -> user */
__s32 handle;
__u32 vc_handle;
__u32 size;
__u32 pad;
__u64 dma_addr;
};
/*
* Cache functions to be set to struct vc_sm_cma_ioctl_clean_invalid2
* invalidate_mode.
*/
#define VC_SM_CACHE_OP_NOP 0x00
#define VC_SM_CACHE_OP_INV 0x01
#define VC_SM_CACHE_OP_CLEAN 0x02
#define VC_SM_CACHE_OP_FLUSH 0x03
struct vc_sm_cma_ioctl_clean_invalid2 {
__u32 op_count;
__u32 pad;
struct vc_sm_cma_ioctl_clean_invalid_block {
__u32 invalidate_mode;
__u32 block_count;
void * __user start_address;
__u32 block_size;
__u32 inter_block_stride;
} s[0];
};
/* IOCTL numbers */
#define VC_SM_CMA_IOCTL_MEM_ALLOC\
_IOR(VC_SM_CMA_MAGIC_TYPE, VC_SM_CMA_CMD_ALLOC,\
struct vc_sm_cma_ioctl_alloc)
#define VC_SM_CMA_IOCTL_MEM_IMPORT_DMABUF\
_IOR(VC_SM_CMA_MAGIC_TYPE, VC_SM_CMA_CMD_IMPORT_DMABUF,\
struct vc_sm_cma_ioctl_import_dmabuf)
#define VC_SM_CMA_IOCTL_MEM_CLEAN_INVALID2\
_IOR(VC_SM_CMA_MAGIC_TYPE, VC_SM_CMA_CMD_CLEAN_INVALID2,\
struct vc_sm_cma_ioctl_clean_invalid2)
#endif /* __VC_SM_CMA_IOCTL_H */
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