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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_p9_wait {
52 __u16 thread_id; /* The thread ID required to wake this thread */
53 __u16 reserved1;
54 __u32 reserved2;
55 __u64 reserved3[3];
56};
57
58#define OCXL_IOCTL_FEATURES_FLAGS0_P9_WAIT 0x01
59struct ocxl_ioctl_features {
60 __u64 flags[4];
61};
62
63struct ocxl_ioctl_irq_fd {
64 __u64 irq_offset;
65 __s32 eventfd;
66 __u32 reserved;
67};
68
69/* ioctl numbers */
70#define OCXL_MAGIC 0xCA
71/* AFU devices */
72#define OCXL_IOCTL_ATTACH _IOW(OCXL_MAGIC, 0x10, struct ocxl_ioctl_attach)
73#define OCXL_IOCTL_IRQ_ALLOC _IOR(OCXL_MAGIC, 0x11, __u64)
74#define OCXL_IOCTL_IRQ_FREE _IOW(OCXL_MAGIC, 0x12, __u64)
75#define OCXL_IOCTL_IRQ_SET_FD _IOW(OCXL_MAGIC, 0x13, struct ocxl_ioctl_irq_fd)
76#define OCXL_IOCTL_GET_METADATA _IOR(OCXL_MAGIC, 0x14, struct ocxl_ioctl_metadata)
77#define OCXL_IOCTL_ENABLE_P9_WAIT _IOR(OCXL_MAGIC, 0x15, struct ocxl_ioctl_p9_wait)
78#define OCXL_IOCTL_GET_FEATURES _IOR(OCXL_MAGIC, 0x16, struct ocxl_ioctl_features)
79
80#endif /* _UAPI_MISC_OCXL_H */