drivers/infiniband/hw/hfi1/fault.h

   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
  17 struct hfi1_ibdev;
  18
  19 #if defined(CONFIG_FAULT_INJECTION) && defined(CONFIG_FAULT_INJECTION_DEBUG_FS)
  20 struct 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
  36 int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd);
  37 bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp, u32 opcode);
  38 bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet);
  39 bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd);
  40 void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd);
  41
  42 #else
  43
  44 static inline int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd)
  45 {
  46         return 0;
  47 }
  48
  49 static inline bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet)
  50 {
  51         return false;
  52 }
  53
  54 static inline bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp,
  55                                             u32 opcode)
  56 {
  57         return false;
  58 }
  59
  60 static inline bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd)
  61 {
  62         return false;
  63 }
  64
  65 static inline void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd)
  66 {
  67 }
  68 #endif
  69 #endif /* _HFI1_FAULT_H */