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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef __QCOM_FASTRPC_H__
#define __QCOM_FASTRPC_H__
#include <linux/types.h>
#define FASTRPC_IOCTL_ALLOC_DMA_BUFF _IOWR('R', 1, struct fastrpc_alloc_dma_buf)
#define FASTRPC_IOCTL_FREE_DMA_BUFF _IOWR('R', 2, __u32)
#define FASTRPC_IOCTL_INVOKE _IOWR('R', 3, struct fastrpc_invoke)
#define FASTRPC_IOCTL_INIT_ATTACH _IO('R', 4)
#define FASTRPC_IOCTL_INIT_CREATE _IOWR('R', 5, struct fastrpc_init_create)
#define FASTRPC_IOCTL_MMAP _IOWR('R', 6, struct fastrpc_req_mmap)
#define FASTRPC_IOCTL_MUNMAP _IOWR('R', 7, struct fastrpc_req_munmap)
#define FASTRPC_IOCTL_INIT_ATTACH_SNS _IO('R', 8)
#define FASTRPC_IOCTL_MEM_MAP _IOWR('R', 10, struct fastrpc_mem_map)
#define FASTRPC_IOCTL_MEM_UNMAP _IOWR('R', 11, struct fastrpc_mem_unmap)
/**
* enum fastrpc_map_flags - control flags for mapping memory on DSP user process
* @FASTRPC_MAP_STATIC: Map memory pages with RW- permission and CACHE WRITEBACK.
* The driver is responsible for cache maintenance when passed
* the buffer to FastRPC calls. Same virtual address will be
* assigned for subsequent FastRPC calls.
* @FASTRPC_MAP_RESERVED: Reserved
* @FASTRPC_MAP_FD: Map memory pages with RW- permission and CACHE WRITEBACK.
* Mapping tagged with a file descriptor. User is responsible for
* CPU and DSP cache maintenance for the buffer. Get virtual address
* of buffer on DSP using HAP_mmap_get() and HAP_mmap_put() APIs.
* @FASTRPC_MAP_FD_DELAYED: Mapping delayed until user call HAP_mmap() and HAP_munmap()
* functions on DSP. It is useful to map a buffer with cache modes
* other than default modes. User is responsible for CPU and DSP
* cache maintenance for the buffer.
* @FASTRPC_MAP_FD_NOMAP: This flag is used to skip CPU mapping,
* otherwise behaves similar to FASTRPC_MAP_FD_DELAYED flag.
* @FASTRPC_MAP_MAX: max count for flags
*
*/
enum fastrpc_map_flags {
FASTRPC_MAP_STATIC = 0,
FASTRPC_MAP_RESERVED,
FASTRPC_MAP_FD = 2,
FASTRPC_MAP_FD_DELAYED,
FASTRPC_MAP_FD_NOMAP = 16,
FASTRPC_MAP_MAX,
};
struct fastrpc_invoke_args {
__u64 ptr;
__u64 length;
__s32 fd;
__u32 reserved;
};
struct fastrpc_invoke {
__u32 handle;
__u32 sc;
__u64 args;
};
struct fastrpc_init_create {
__u32 filelen; /* elf file length */
__s32 filefd; /* fd for the file */
__u32 attrs;
__u32 siglen;
__u64 file; /* pointer to elf file */
};
struct fastrpc_alloc_dma_buf {
__s32 fd; /* fd */
__u32 flags; /* flags to map with */
__u64 size; /* size */
};
struct fastrpc_req_mmap {
__s32 fd;
__u32 flags; /* flags for dsp to map with */
__u64 vaddrin; /* optional virtual address */
__u64 size; /* size */
__u64 vaddrout; /* dsp virtual address */
};
struct fastrpc_mem_map {
__s32 version;
__s32 fd; /* fd */
__s32 offset; /* buffer offset */
__u32 flags; /* flags defined in enum fastrpc_map_flags */
__u64 vaddrin; /* buffer virtual address */
__u64 length; /* buffer length */
__u64 vaddrout; /* [out] remote virtual address */
__s32 attrs; /* buffer attributes used for SMMU mapping */
__s32 reserved[4];
};
struct fastrpc_req_munmap {
__u64 vaddrout; /* address to unmap */
__u64 size; /* size */
};
struct fastrpc_mem_unmap {
__s32 vesion;
__s32 fd; /* fd */
__u64 vaddr; /* remote process (dsp) virtual address */
__u64 length; /* buffer size */
__s32 reserved[5];
};
#endif /* __QCOM_FASTRPC_H__ */
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