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 29 extern int irq_remapping_enabled; 30 31 extern void setup_irq_remapping_ops(void); 32 extern int irq_remapping_supported(void); 33 extern int irq_remapping_prepare(void); 34 extern int irq_remapping_enable(void); 35 extern void irq_remapping_disable(void); 36 extern int irq_remapping_reenable(int); 37 extern int irq_remap_enable_fault_handling(void); 38 extern 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); 43 extern int set_remapped_irq_affinity(struct irq_data *data, 44 const struct cpumask *mask, 45 bool force); 46 extern void free_remapped_irq(int irq); 47 extern void compose_remapped_msi_msg(struct pci_dev *pdev, 48 unsigned int irq, unsigned int dest, 49 struct msi_msg *msg, u8 hpet_id); 50 extern int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec); 51 extern int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq, 52 int index, int sub_handle); 53 extern 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 59 static inline void setup_irq_remapping_ops(void) { } 60 static inline int irq_remapping_supported(void) { return 0; } 61 static inline int irq_remapping_prepare(void) { return -ENODEV; } 62 static inline int irq_remapping_enable(void) { return -ENODEV; } 63 static inline void irq_remapping_disable(void) { } 64 static inline int irq_remapping_reenable(int eim) { return -ENODEV; } 65 static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; } 66 static 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 } 74 static inline int set_remapped_irq_affinity(struct irq_data *data, 75 const struct cpumask *mask, 76 bool force) 77 { 78 return 0; 79 } 80 static inline void free_remapped_irq(int irq) { } 81 static 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 } 86 static inline int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec) 87 { 88 return -ENODEV; 89 } 90 static inline int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq, 91 int index, int sub_handle) 92 { 93 return -ENODEV; 94 } 95 static 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