text: /*
   * Copyright (C) 2012 Advanced Micro Devices, Inc.
   * Author: Joerg Roedel <joerg.roedel@amd.com>
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 as published
   * by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   *
   * This header file contains the interface of the interrupt remapping code to
   * the x86 interrupt management code.
   */
  
  #ifndef __X86_IRQ_REMAPPING_H
  #define __X86_IRQ_REMAPPING_H
  
  #include <asm/io_apic.h>
  
  struct IO_APIC_route_entry;
  struct io_apic_irq_attr;
  struct irq_chip;
  struct msi_msg;
  struct pci_dev;
  struct irq_cfg;
  
  #ifdef CONFIG_IRQ_REMAP
  
  extern void setup_irq_remapping_ops(void);
  extern int irq_remapping_supported(void);
  extern void set_irq_remapping_broken(void);
  extern int irq_remapping_prepare(void);
  extern int irq_remapping_enable(void);
  extern void irq_remapping_disable(void);
  extern int irq_remapping_reenable(int);
  extern int irq_remap_enable_fault_handling(void);
  extern int setup_ioapic_remapped_entry(int irq,
  				       struct IO_APIC_route_entry *entry,
  				       unsigned int destination,
  				       int vector,
  				       struct io_apic_irq_attr *attr);
  extern void free_remapped_irq(int irq);
  extern void compose_remapped_msi_msg(struct pci_dev *pdev,
  				     unsigned int irq, unsigned int dest,
  				     struct msi_msg *msg, u8 hpet_id);
  extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
  extern void panic_if_irq_remap(const char *msg);
  extern bool setup_remapped_irq(int irq,
  			       struct irq_cfg *cfg,
  			       struct irq_chip *chip);
  
  void irq_remap_modify_chip_defaults(struct irq_chip *chip);
  
  #else  /* CONFIG_IRQ_REMAP */
  
  static inline void setup_irq_remapping_ops(void) { }
  static inline int irq_remapping_supported(void) { return 0; }
  static inline void set_irq_remapping_broken(void) { }
  static inline int irq_remapping_prepare(void) { return -ENODEV; }
  static inline int irq_remapping_enable(void) { return -ENODEV; }
  static inline void irq_remapping_disable(void) { }
  static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
  static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
  static inline int setup_ioapic_remapped_entry(int irq,
  					      struct IO_APIC_route_entry *entry,
  					      unsigned int destination,
  					      int vector,
  					      struct io_apic_irq_attr *attr)
  {
  	return -ENODEV;
  }
  static inline void free_remapped_irq(int irq) { }
  static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
  					    unsigned int irq, unsigned int dest,
  					    struct msi_msg *msg, u8 hpet_id)
  {
  }
  static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
  {
  	return -ENODEV;
  }
  
  static inline void panic_if_irq_remap(const char *msg)
  {
  }
  
  static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
  {
  }
  
  static inline bool setup_remapped_irq(int irq,
  				      struct irq_cfg *cfg,
  				      struct irq_chip *chip)
  {
  	return false;
  }
  #endif /* CONFIG_IRQ_REMAP */
  
  #define dmar_alloc_hwirq()	irq_alloc_hwirq(-1)
  #define dmar_free_hwirq		irq_free_hwirq
  
  #endif /* __X86_IRQ_REMAPPING_H */
  