/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/* Copyright 2017 IBM Corp. */
#ifndef _UAPI_MISC_OCXL_H
#define _UAPI_MISC_OCXL_H

#include <linux/types.h>
#include <linux/ioctl.h>

enum ocxl_event_type {
        OCXL_AFU_EVENT_XSL_FAULT_ERROR = 0,
};

#define OCXL_KERNEL_EVENT_FLAG_LAST 0x0001  /* This is the last event pending */

struct ocxl_kernel_event_header {
        __u16 type;
        __u16 flags;
        __u32 reserved;
};

struct ocxl_kernel_event_xsl_fault_error {
        __u64 addr;
        __u64 dsisr;
        __u64 count;
        __u64 reserved;
};

struct ocxl_ioctl_attach {
        __u64 amr;
        __u64 reserved1;
        __u64 reserved2;
        __u64 reserved3;
};

struct ocxl_ioctl_metadata {
        __u16 version; /* struct version, always backwards compatible */

        /* Version 0 fields */
        __u8  afu_version_major;
        __u8  afu_version_minor;
        __u32 pasid;            /* PASID assigned to the current context */

        __u64 pp_mmio_size;     /* Per PASID MMIO size */
        __u64 global_mmio_size;

        /* End version 0 fields */

        __u64 reserved[13]; /* Total of 16*u64 */
};

struct ocxl_ioctl_p9_wait {
        __u16 thread_id; /* The thread ID required to wake this thread */
        __u16 reserved1;
        __u32 reserved2;
        __u64 reserved3[3];
};

#define OCXL_IOCTL_FEATURES_FLAGS0_P9_WAIT      0x01
struct ocxl_ioctl_features {
        __u64 flags[4];
};

struct ocxl_ioctl_irq_fd {
        __u64 irq_offset;
        __s32 eventfd;
        __u32 reserved;
};

/* ioctl numbers */
#define OCXL_MAGIC 0xCA
/* AFU devices */
#define OCXL_IOCTL_ATTACH       _IOW(OCXL_MAGIC, 0x10, struct ocxl_ioctl_attach)
#define OCXL_IOCTL_IRQ_ALLOC    _IOR(OCXL_MAGIC, 0x11, __u64)
#define OCXL_IOCTL_IRQ_FREE     _IOW(OCXL_MAGIC, 0x12, __u64)
#define OCXL_IOCTL_IRQ_SET_FD   _IOW(OCXL_MAGIC, 0x13, struct ocxl_ioctl_irq_fd)
#define OCXL_IOCTL_GET_METADATA _IOR(OCXL_MAGIC, 0x14, struct ocxl_ioctl_metadata)
#define OCXL_IOCTL_ENABLE_P9_WAIT       _IOR(OCXL_MAGIC, 0x15, struct ocxl_ioctl_p9_wait)
#define OCXL_IOCTL_GET_FEATURES _IOR(OCXL_MAGIC, 0x16, struct ocxl_ioctl_features)

#endif /* _UAPI_MISC_OCXL_H */