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 #ifdef CONFIG_IRQ_REMAP 26 27 struct IO_APIC_route_entry; 28 struct io_apic_irq_attr; 29 struct pci_dev; 30 31 extern int irq_remapping_enabled; 32 33 extern void setup_irq_remapping_ops(void); 34 extern int irq_remapping_supported(void); 35 extern int irq_remapping_prepare(void); 36 extern int irq_remapping_enable(void); 37 extern void irq_remapping_disable(void); 38 extern int irq_remapping_reenable(int); 39 extern int irq_remap_enable_fault_handling(void); 40 extern int setup_ioapic_remapped_entry(int irq, 41 struct IO_APIC_route_entry *entry, 42 unsigned int destination, 43 int vector, 44 struct io_apic_irq_attr *attr); 45 extern int set_remapped_irq_affinity(struct irq_data *data, 46 const struct cpumask *mask, 47 bool force); 48 extern void free_remapped_irq(int irq); 49 extern void compose_remapped_msi_msg(struct pci_dev *pdev, 50 unsigned int irq, unsigned int dest, 51 struct msi_msg *msg, u8 hpet_id); 52 extern int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec); 53 extern int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq, 54 int index, int sub_handle); 55 extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id); 56 57 #else /* CONFIG_IRQ_REMAP */ 58 59 #define irq_remapping_enabled 0 60 61 static inline void setup_irq_remapping_ops(void) { } 62 static inline int irq_remapping_supported(void) { return 0; } 63 static inline int irq_remapping_prepare(void) { return -ENODEV; } 64 static inline int irq_remapping_enable(void) { return -ENODEV; } 65 static inline void irq_remapping_disable(void) { } 66 static inline int irq_remapping_reenable(int eim) { return -ENODEV; } 67 static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; } 68 static inline int setup_ioapic_remapped_entry(int irq, 69 struct IO_APIC_route_entry *entry, 70 unsigned int destination, 71 int vector, 72 struct io_apic_irq_attr *attr) 73 { 74 return -ENODEV; 75 } 76 static inline int set_remapped_irq_affinity(struct irq_data *data, 77 const struct cpumask *mask, 78 bool force) 79 { 80 return 0; 81 } 82 static inline void free_remapped_irq(int irq) { } 83 static inline void compose_remapped_msi_msg(struct pci_dev *pdev, 84 unsigned int irq, unsigned int dest, 85 struct msi_msg *msg, u8 hpet_id) 86 { 87 } 88 static inline int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec) 89 { 90 return -ENODEV; 91 } 92 static inline int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq, 93 int index, int sub_handle) 94 { 95 return -ENODEV; 96 } 97 static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id) 98 { 99 return -ENODEV; 100 } 101 #endif /* CONFIG_IRQ_REMAP */ 102 103 #endif /* __X86_IRQ_REMAPPING_H */ 104