LXR linux/arch/x86/include/asm/irq

   1/*
   2 * Copyright (C) 2012 Advanced Micro Devices, Inc.
   3 * Author: Joerg Roedel <joerg.roedel@amd.com>
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms of the GNU General Public License version 2 as published
   7 * by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write to the Free Software
  16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17 *
  18 * This header file contains the interface of the interrupt remapping code to
  19 * the x86 interrupt management code.
  20 */
  21
  22#ifndef __X86_IRQ_REMAPPING_H
  23#define __X86_IRQ_REMAPPING_H
  24
  25#include <asm/io_apic.h>
  26
  27#ifdef CONFIG_IRQ_REMAP
  28
  29extern int irq_remapping_enabled;
  30
  31extern void setup_irq_remapping_ops(void);
  32extern int irq_remapping_supported(void);
  33extern int irq_remapping_prepare(void);
  34extern int irq_remapping_enable(void);
  35extern void irq_remapping_disable(void);
  36extern int irq_remapping_reenable(int);
  37extern int irq_remap_enable_fault_handling(void);
  38extern int setup_ioapic_remapped_entry(int irq,
  39                                       struct IO_APIC_route_entry *entry,
  40                                       unsigned int destination,
  41                                       int vector,
  42                                       struct io_apic_irq_attr *attr);
  43extern int set_remapped_irq_affinity(struct irq_data *data,
  44                                     const struct cpumask *mask,
  45                                     bool force);
  46extern void free_remapped_irq(int irq);
  47extern void compose_remapped_msi_msg(struct pci_dev *pdev,
  48                                     unsigned int irq, unsigned int dest,
  49                                     struct msi_msg *msg, u8 hpet_id);
  50extern int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec);
  51extern int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
  52                                  int index, int sub_handle);
  53extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
  54
  55#else  /* CONFIG_IRQ_REMAP */
  56
  57#define irq_remapping_enabled   0
  58
  59static inline void setup_irq_remapping_ops(void) { }
  60static inline int irq_remapping_supported(void) { return 0; }
  61static inline int irq_remapping_prepare(void) { return -ENODEV; }
  62static inline int irq_remapping_enable(void) { return -ENODEV; }
  63static inline void irq_remapping_disable(void) { }
  64static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
  65static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
  66static inline int setup_ioapic_remapped_entry(int irq,
  67                                              struct IO_APIC_route_entry *entry,
  68                                              unsigned int destination,
  69                                              int vector,
  70                                              struct io_apic_irq_attr *attr)
  71{
  72        return -ENODEV;
  73}
  74static inline int set_remapped_irq_affinity(struct irq_data *data,
  75                                            const struct cpumask *mask,
  76                                            bool force)
  77{
  78        return 0;
  79}
  80static inline void free_remapped_irq(int irq) { }
  81static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
  82                                            unsigned int irq, unsigned int dest,
  83                                            struct msi_msg *msg, u8 hpet_id)
  84{
  85}
  86static inline int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec)
  87{
  88        return -ENODEV;
  89}
  90static inline int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
  91                                         int index, int sub_handle)
  92{
  93        return -ENODEV;
  94}
  95static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
  96{
  97        return -ENODEV;
  98}
  99#endif /* CONFIG_IRQ_REMAP */
 100
 101#endif /* __X86_IRQ_REMAPPING_H */
 102