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 set_irq_remapping_broken(void); 37 extern int irq_remapping_prepare(void); 38 extern int irq_remapping_enable(void); 39 extern void irq_remapping_disable(void); 40 extern int irq_remapping_reenable(int); 41 extern int irq_remap_enable_fault_handling(void); 42 extern int setup_ioapic_remapped_entry(int irq, 43 struct IO_APIC_route_entry *entry, 44 unsigned int destination, 45 int vector, 46 struct io_apic_irq_attr *attr); 47 extern void free_remapped_irq(int irq); 48 extern void compose_remapped_msi_msg(struct pci_dev *pdev, 49 unsigned int irq, unsigned int dest, 50 struct msi_msg *msg, u8 hpet_id); 51 extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id); 52 extern void panic_if_irq_remap(const char *msg); 53 extern bool setup_remapped_irq(int irq, 54 struct irq_cfg *cfg, 55 struct irq_chip *chip); 56 57 void irq_remap_modify_chip_defaults(struct irq_chip *chip); 58 59 #else /* CONFIG_IRQ_REMAP */ 60 61 static inline void set_irq_remapping_broken(void) { } 62 static inline int irq_remapping_prepare(void) { return -ENODEV; } 63 static inline int irq_remapping_enable(void) { return -ENODEV; } 64 static inline void irq_remapping_disable(void) { } 65 static inline int irq_remapping_reenable(int eim) { return -ENODEV; } 66 static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; } 67 static inline int setup_ioapic_remapped_entry(int irq, 68 struct IO_APIC_route_entry *entry, 69 unsigned int destination, 70 int vector, 71 struct io_apic_irq_attr *attr) 72 { 73 return -ENODEV; 74 } 75 static inline void free_remapped_irq(int irq) { } 76 static inline void compose_remapped_msi_msg(struct pci_dev *pdev, 77 unsigned int irq, unsigned int dest, 78 struct msi_msg *msg, u8 hpet_id) 79 { 80 } 81 static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id) 82 { 83 return -ENODEV; 84 } 85 86 static inline void panic_if_irq_remap(const char *msg) 87 { 88 } 89 90 static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip) 91 { 92 } 93 94 static inline bool setup_remapped_irq(int irq, 95 struct irq_cfg *cfg, 96 struct irq_chip *chip) 97 { 98 return false; 99 } 100 #endif /* CONFIG_IRQ_REMAP */ 101 102 #define dmar_alloc_hwirq() irq_alloc_hwirq(-1) 103 #define dmar_free_hwirq irq_free_hwirq 104 105 #endif /* __X86_IRQ_REMAPPING_H */ 106