1/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
 2/*
 3 * Copyright(c) 2018 Intel Corporation.
 4 */
 5
 6#ifndef _HFI1_FAULT_H
 7#define _HFI1_FAULT_H
 8
 9#include <linux/fault-inject.h>
10#include <linux/dcache.h>
11#include <linux/bitops.h>
12#include <linux/kernel.h>
13#include <rdma/rdma_vt.h>
14
15#include "hfi.h"
16
17struct hfi1_ibdev;
18
19#if defined(CONFIG_FAULT_INJECTION) && defined(CONFIG_FAULT_INJECTION_DEBUG_FS)
20struct fault {
21	struct fault_attr attr;
22	struct dentry *dir;
23	u64 n_rxfaults[(1U << BITS_PER_BYTE)];
24	u64 n_txfaults[(1U << BITS_PER_BYTE)];
25	u64 fault_skip;
26	u64 skip;
27	u64 fault_skip_usec;
28	unsigned long skip_usec;
29	unsigned long opcodes[(1U << BITS_PER_BYTE) / BITS_PER_LONG];
30	bool enable;
31	bool suppress_err;
32	bool opcode;
33	u8 direction;
34};
35
36int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd);
37bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp, u32 opcode);
38bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet);
39bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd);
40void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd);
41
42#else
43
44static inline int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd)
45{
46	return 0;
47}
48
49static inline bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet)
50{
51	return false;
52}
53
54static inline bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp,
55					    u32 opcode)
56{
57	return false;
58}
59
60static inline bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd)
61{
62	return false;
63}
64
65static inline void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd)
66{
67}
68#endif
69#endif /* _HFI1_FAULT_H */