Joerg Roedel | 736baef | 2012-03-30 11:47:00 -0700 | [diff] [blame] | 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 | |
Suresh Siddha | 8a8f422 | 2012-03-30 11:47:08 -0700 | [diff] [blame] | 22 | #ifndef __X86_IRQ_REMAPPING_H |
| 23 | #define __X86_IRQ_REMAPPING_H |
Joerg Roedel | 736baef | 2012-03-30 11:47:00 -0700 | [diff] [blame] | 24 | |
Jiang Liu | d746d1e | 2015-04-14 10:30:09 +0800 | [diff] [blame] | 25 | #include <asm/irqdomain.h> |
Jiang Liu | 947045a | 2015-04-13 14:11:30 +0800 | [diff] [blame] | 26 | #include <asm/hw_irq.h> |
Suresh Siddha | 399988e | 2012-05-08 00:08:52 -0700 | [diff] [blame] | 27 | #include <asm/io_apic.h> |
Joerg Roedel | 736baef | 2012-03-30 11:47:00 -0700 | [diff] [blame] | 28 | |
Joerg Roedel | 35d3d81 | 2013-04-19 20:34:55 +0200 | [diff] [blame] | 29 | struct msi_msg; |
Jiang Liu | 947045a | 2015-04-13 14:11:30 +0800 | [diff] [blame] | 30 | struct irq_alloc_info; |
Joerg Roedel | 35d3d81 | 2013-04-19 20:34:55 +0200 | [diff] [blame] | 31 | |
Feng Wu | 6f28192 | 2015-06-09 13:20:28 +0800 | [diff] [blame] | 32 | enum irq_remap_cap { |
| 33 | IRQ_POSTING_CAP = 0, |
| 34 | }; |
| 35 | |
Paolo Bonzini | 18cd52c | 2015-09-18 18:04:17 +0200 | [diff] [blame] | 36 | struct vcpu_data { |
| 37 | u64 pi_desc_addr; /* Physical address of PI Descriptor */ |
| 38 | u32 vector; /* Guest vector of the interrupt */ |
| 39 | }; |
| 40 | |
Suresh Siddha | 399988e | 2012-05-08 00:08:52 -0700 | [diff] [blame] | 41 | #ifdef CONFIG_IRQ_REMAP |
Joerg Roedel | 0c3f173 | 2012-03-30 11:47:02 -0700 | [diff] [blame] | 42 | |
Feng Wu | 959c870 | 2015-06-09 13:20:36 +0800 | [diff] [blame] | 43 | extern bool irq_remapping_cap(enum irq_remap_cap cap); |
Neil Horman | 03bbcb2 | 2013-04-16 16:38:32 -0400 | [diff] [blame] | 44 | extern void set_irq_remapping_broken(void); |
Suresh Siddha | 95a02e9 | 2012-03-30 11:47:07 -0700 | [diff] [blame] | 45 | extern int irq_remapping_prepare(void); |
| 46 | extern int irq_remapping_enable(void); |
| 47 | extern void irq_remapping_disable(void); |
| 48 | extern int irq_remapping_reenable(int); |
| 49 | extern int irq_remap_enable_fault_handling(void); |
Joerg Roedel | 6a9f5de | 2012-09-26 12:44:41 +0200 | [diff] [blame] | 50 | extern void panic_if_irq_remap(const char *msg); |
Joerg Roedel | 9b1b0e4 | 2012-09-26 12:44:45 +0200 | [diff] [blame] | 51 | |
Jiang Liu | 947045a | 2015-04-13 14:11:30 +0800 | [diff] [blame] | 52 | extern struct irq_domain * |
| 53 | irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info); |
| 54 | extern struct irq_domain * |
| 55 | irq_remapping_get_irq_domain(struct irq_alloc_info *info); |
Jiang Liu | 947045a | 2015-04-13 14:11:30 +0800 | [diff] [blame] | 56 | |
| 57 | /* Create PCI MSI/MSIx irqdomain, use @parent as the parent irqdomain. */ |
Jiang Liu | 52f518a | 2015-04-13 14:11:35 +0800 | [diff] [blame] | 58 | extern struct irq_domain *arch_create_msi_irq_domain(struct irq_domain *parent); |
Jiang Liu | 947045a | 2015-04-13 14:11:30 +0800 | [diff] [blame] | 59 | |
| 60 | /* Get parent irqdomain for interrupt remapping irqdomain */ |
| 61 | static inline struct irq_domain *arch_get_ir_parent_domain(void) |
| 62 | { |
| 63 | return x86_vector_domain; |
| 64 | } |
| 65 | |
Joerg Roedel | 736baef | 2012-03-30 11:47:00 -0700 | [diff] [blame] | 66 | #else /* CONFIG_IRQ_REMAP */ |
| 67 | |
Feng Wu | 959c870 | 2015-06-09 13:20:36 +0800 | [diff] [blame] | 68 | static inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; } |
Neil Horman | 03bbcb2 | 2013-04-16 16:38:32 -0400 | [diff] [blame] | 69 | static inline void set_irq_remapping_broken(void) { } |
Suresh Siddha | 95a02e9 | 2012-03-30 11:47:07 -0700 | [diff] [blame] | 70 | static inline int irq_remapping_prepare(void) { return -ENODEV; } |
| 71 | static inline int irq_remapping_enable(void) { return -ENODEV; } |
| 72 | static inline void irq_remapping_disable(void) { } |
| 73 | static inline int irq_remapping_reenable(int eim) { return -ENODEV; } |
| 74 | static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; } |
Joerg Roedel | 6a9f5de | 2012-09-26 12:44:41 +0200 | [diff] [blame] | 75 | |
| 76 | static inline void panic_if_irq_remap(const char *msg) |
| 77 | { |
| 78 | } |
Joerg Roedel | 9b1b0e4 | 2012-09-26 12:44:45 +0200 | [diff] [blame] | 79 | |
Jiang Liu | 947045a | 2015-04-13 14:11:30 +0800 | [diff] [blame] | 80 | static inline struct irq_domain * |
| 81 | irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info) |
| 82 | { |
| 83 | return NULL; |
| 84 | } |
| 85 | |
| 86 | static inline struct irq_domain * |
| 87 | irq_remapping_get_irq_domain(struct irq_alloc_info *info) |
| 88 | { |
| 89 | return NULL; |
| 90 | } |
| 91 | |
Joerg Roedel | 736baef | 2012-03-30 11:47:00 -0700 | [diff] [blame] | 92 | #endif /* CONFIG_IRQ_REMAP */ |
Suresh Siddha | 8a8f422 | 2012-03-30 11:47:08 -0700 | [diff] [blame] | 93 | #endif /* __X86_IRQ_REMAPPING_H */ |