/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */

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/* Copyright 2017 IBM Corp. */

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#ifndef _MISC_OCXL_H

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#define _MISC_OCXL_H

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#include <linux/types.h>

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#include <linux/ioctl.h>

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enum ocxl_event_type {

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OCXL_AFU_EVENT_XSL_FAULT_ERROR = 0,

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};

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

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struct ocxl_kernel_event_header {

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__u16 type;

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__u16 flags;

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__u32 reserved;

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};

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struct ocxl_kernel_event_xsl_fault_error {

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__u64 addr;

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__u64 dsisr;

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__u64 count;

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__u64 reserved;

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};

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struct ocxl_ioctl_attach {

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__u64 amr;

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__u64 reserved1;

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__u64 reserved2;

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__u64 reserved3;

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};

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struct ocxl_ioctl_metadata {

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

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/* Version 0 fields */

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__u8 afu_version_major;

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__u8 afu_version_minor;

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__u32 pasid; /* PASID assigned to the current context */

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__u64 pp_mmio_size; /* Per PASID MMIO size */

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__u64 global_mmio_size;

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/* End version 0 fields */

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

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};

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struct ocxl_ioctl_p9_wait {

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__u16 thread_id; /* The thread ID required to wake this thread */

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__u16 reserved1;

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__u32 reserved2;

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__u64 reserved3[3];

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};

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#define OCXL_IOCTL_FEATURES_FLAGS0_P9_WAIT 0x01

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struct ocxl_ioctl_features {

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__u64 flags[4];

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};

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struct ocxl_ioctl_irq_fd {

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__u64 irq_offset;

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__s32 eventfd;

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__u32 reserved;

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};

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/* ioctl numbers */

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#define OCXL_MAGIC 0xCA

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/* AFU devices */

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#define OCXL_IOCTL_ATTACH _IOW(OCXL_MAGIC, 0x10, struct ocxl_ioctl_attach)

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#define OCXL_IOCTL_IRQ_ALLOC _IOR(OCXL_MAGIC, 0x11, __u64)

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#define OCXL_IOCTL_IRQ_FREE _IOW(OCXL_MAGIC, 0x12, __u64)

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#define OCXL_IOCTL_IRQ_SET_FD _IOW(OCXL_MAGIC, 0x13, struct ocxl_ioctl_irq_fd)

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#define OCXL_IOCTL_GET_METADATA _IOR(OCXL_MAGIC, 0x14, struct ocxl_ioctl_metadata)

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#define OCXL_IOCTL_ENABLE_P9_WAIT _IOR(OCXL_MAGIC, 0x15, struct ocxl_ioctl_p9_wait)

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#define OCXL_IOCTL_GET_FEATURES _IOR(OCXL_MAGIC, 0x16, struct ocxl_ioctl_features)

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#endif /* _MISC_OCXL_H */

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