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