/*
   * Copyright 2014 IBM Corp.
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * as published by the Free Software Foundation; either version
   * 2 of the License, or (at your option) any later version.
   */

  #ifndef _MISC_CXL_BASE_H
  #define _MISC_CXL_BASE_H

  #include <misc/cxl.h>

  #ifdef CONFIG_CXL_BASE
  
  #define CXL_IRQ_RANGES 4
  
  struct cxl_irq_ranges {
  	irq_hw_number_t offset[CXL_IRQ_RANGES];
  	irq_hw_number_t range[CXL_IRQ_RANGES];
  };
  
  extern atomic_t cxl_use_count;
  
  static inline bool cxl_ctx_in_use(void)
  {
         return (atomic_read(&cxl_use_count) != 0);
  }
  
  static inline void cxl_ctx_get(void)
  {
         atomic_inc(&cxl_use_count);
  }
  
  static inline void cxl_ctx_put(void)
  {
         atomic_dec(&cxl_use_count);
  }

  struct cxl_afu *cxl_afu_get(struct cxl_afu *afu);
  void cxl_afu_put(struct cxl_afu *afu);

  void cxl_slbia(struct mm_struct *mm);

  bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu);
  void cxl_pci_disable_device(struct pci_dev *dev);

  int cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type);
  void cxl_cx4_teardown_msi_irqs(struct pci_dev *pdev);

  
  #else /* CONFIG_CXL_BASE */
  
  static inline bool cxl_ctx_in_use(void) { return false; }

  static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu) { return NULL; }
  static inline void cxl_afu_put(struct cxl_afu *afu) {}

  static inline void cxl_slbia(struct mm_struct *mm) {}

  static inline bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu) { return false; }
  static inline void cxl_pci_disable_device(struct pci_dev *dev) {}

  static inline int cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) { return -ENODEV; }
  static inline void cxl_cx4_teardown_msi_irqs(struct pci_dev *pdev) {}

  
  #endif /* CONFIG_CXL_BASE */
  
  #endif