1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
 2/* Copyright 2017 IBM Corp. */
 3#ifndef _UAPI_MISC_OCXL_H
 4#define _UAPI_MISC_OCXL_H
 5
 6#include <linux/types.h>
 7#include <linux/ioctl.h>
 8
 9enum ocxl_event_type {
10	OCXL_AFU_EVENT_XSL_FAULT_ERROR = 0,
11};
12
13#define OCXL_KERNEL_EVENT_FLAG_LAST 0x0001  /* This is the last event pending */
14
15struct ocxl_kernel_event_header {
16	__u16 type;
17	__u16 flags;
18	__u32 reserved;
19};
20
21struct ocxl_kernel_event_xsl_fault_error {
22	__u64 addr;
23	__u64 dsisr;
24	__u64 count;
25	__u64 reserved;
26};
27
28struct ocxl_ioctl_attach {
29	__u64 amr;
30	__u64 reserved1;
31	__u64 reserved2;
32	__u64 reserved3;
33};
34
35struct ocxl_ioctl_metadata {
36	__u16 version; // struct version, always backwards compatible
37
38	// Version 0 fields
39	__u8  afu_version_major;
40	__u8  afu_version_minor;
41	__u32 pasid;		// PASID assigned to the current context
42
43	__u64 pp_mmio_size;	// Per PASID MMIO size
44	__u64 global_mmio_size;
45
46	// End version 0 fields
47
48	__u64 reserved[13]; // Total of 16*u64
49};
50
51struct ocxl_ioctl_irq_fd {
52	__u64 irq_offset;
53	__s32 eventfd;
54	__u32 reserved;
55};
56
57/* ioctl numbers */
58#define OCXL_MAGIC 0xCA
59/* AFU devices */
60#define OCXL_IOCTL_ATTACH	_IOW(OCXL_MAGIC, 0x10, struct ocxl_ioctl_attach)
61#define OCXL_IOCTL_IRQ_ALLOC	_IOR(OCXL_MAGIC, 0x11, __u64)
62#define OCXL_IOCTL_IRQ_FREE	_IOW(OCXL_MAGIC, 0x12, __u64)
63#define OCXL_IOCTL_IRQ_SET_FD	_IOW(OCXL_MAGIC, 0x13, struct ocxl_ioctl_irq_fd)
64#define OCXL_IOCTL_GET_METADATA _IOR(OCXL_MAGIC, 0x14, struct ocxl_ioctl_metadata)
65
66#endif /* _UAPI_MISC_OCXL_H */