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 struct IO_APIC_route_entry; 28 struct io_apic_irq_attr; 29 struct irq_chip; 30 struct msi_msg; 31 struct pci_dev; 32 struct irq_cfg; 33 34 #ifdef CONFIG_IRQ_REMAP 35 36 extern void setup_irq_remapping_ops(void); 37 extern int irq_remapping_supported(void); 38 extern void set_irq_remapping_broken(void); 39 extern int irq_remapping_prepare(void); 40 extern int irq_remapping_enable(void); 41 extern void irq_remapping_disable(void); 42 extern int irq_remapping_reenable(int); 43 extern int irq_remap_enable_fault_handling(void); 44 extern int setup_ioapic_remapped_entry(int irq, 45 struct IO_APIC_route_entry *entry, 46 unsigned int destination, 47 int vector, 48 struct io_apic_irq_attr *attr); 49 extern void free_remapped_irq(int irq); 50 extern void compose_remapped_msi_msg(struct pci_dev *pdev, 51 unsigned int irq, unsigned int dest, 52 struct msi_msg *msg, u8 hpet_id); 53 extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id); 54 extern void panic_if_irq_remap(const char *msg); 55 extern bool setup_remapped_irq(int irq, 56 struct irq_cfg *cfg, 57 struct irq_chip *chip); 58 59 void irq_remap_modify_chip_defaults(struct irq_chip *chip); 60 61 #else /* CONFIG_IRQ_REMAP */ 62 63 static inline void setup_irq_remapping_ops(void) { } 64 static inline int irq_remapping_supported(void) { return 0; } 65 static inline void set_irq_remapping_broken(void) { } 66 static inline int irq_remapping_prepare(void) { return -ENODEV; } 67 static inline int irq_remapping_enable(void) { return -ENODEV; } 68 static inline void irq_remapping_disable(void) { } 69 static inline int irq_remapping_reenable(int eim) { return -ENODEV; } 70 static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; } 71 static inline int setup_ioapic_remapped_entry(int irq, 72 struct IO_APIC_route_entry *entry, 73 unsigned int destination, 74 int vector, 75 struct io_apic_irq_attr *attr) 76 { 77 return -ENODEV; 78 } 79 static inline void free_remapped_irq(int irq) { } 80 static inline void compose_remapped_msi_msg(struct pci_dev *pdev, 81 unsigned int irq, unsigned int dest, 82 struct msi_msg *msg, u8 hpet_id) 83 { 84 } 85 static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id) 86 { 87 return -ENODEV; 88 } 89 90 static inline void panic_if_irq_remap(const char *msg) 91 { 92 } 93 94 static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip) 95 { 96 } 97 98 static inline bool setup_remapped_irq(int irq, 99 struct irq_cfg *cfg, 100 struct irq_chip *chip) 101 { 102 return false; 103 } 104 #endif /* CONFIG_IRQ_REMAP */ 105 106 #endif /* __X86_IRQ_REMAPPING_H */ 107