include/cxl/einj.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * CXL protocol Error INJection support.
   4  *
   5  * Copyright (c) 2023 Advanced Micro Devices, Inc.
   6  * All Rights Reserved.
   7  *
   8  * Author: Ben Cheatham <benjamin.cheatham@amd.com>
   9  */
  10 #ifndef EINJ_CXL_H
  11 #define EINJ_CXL_H
  12
  13 #include <linux/errno.h>
  14 #include <linux/types.h>
  15
  16 struct pci_dev;
  17 struct seq_file;
  18
  19 #if IS_ENABLED(CONFIG_ACPI_APEI_EINJ_CXL)
  20 int einj_cxl_available_error_type_show(struct seq_file *m, void *v);
  21 int einj_cxl_inject_error(struct pci_dev *dport_dev, u64 type);
  22 int einj_cxl_inject_rch_error(u64 rcrb, u64 type);
  23 bool einj_cxl_is_initialized(void);
  24 #else /* !IS_ENABLED(CONFIG_ACPI_APEI_EINJ_CXL) */
  25 static inline int einj_cxl_available_error_type_show(struct seq_file *m,
  26                                                      void *v)
  27 {
  28         return -ENXIO;
  29 }
  30
  31 static inline int einj_cxl_inject_error(struct pci_dev *dport_dev, u64 type)
  32 {
  33         return -ENXIO;
  34 }
  35
  36 static inline int einj_cxl_inject_rch_error(u64 rcrb, u64 type)
  37 {
  38         return -ENXIO;
  39 }
  40
  41 static inline bool einj_cxl_is_initialized(void) { return false; }
  42 #endif /* CONFIG_ACPI_APEI_EINJ_CXL */
  43
  44 #endif /* EINJ_CXL_H */