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