1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2012 Advanced Micro Devices, Inc.
 4 * Author: Joerg Roedel <joerg.roedel@amd.com>
 5 *
 
 
 
 
 
 
 
 
 
 
 
 
 
 6 * This header file contains the interface of the interrupt remapping code to
 7 * the x86 interrupt management code.
 8 */
 9
10#ifndef __X86_IRQ_REMAPPING_H
11#define __X86_IRQ_REMAPPING_H
12
13#include <asm/irqdomain.h>
14#include <asm/hw_irq.h>
15#include <asm/io_apic.h>
16
 
 
 
17struct msi_msg;
18struct irq_alloc_info;
19
20enum irq_remap_cap {
21	IRQ_POSTING_CAP = 0,
22};
23
24enum {
25	IRQ_REMAP_XAPIC_MODE,
26	IRQ_REMAP_X2APIC_MODE,
27};
28
29struct vcpu_data {
30	u64 pi_desc_addr;	/* Physical address of PI Descriptor */
31	u32 vector;		/* Guest vector of the interrupt */
32};
33
34#ifdef CONFIG_IRQ_REMAP
35
36extern raw_spinlock_t irq_2_ir_lock;
37
38extern bool irq_remapping_cap(enum irq_remap_cap cap);
39extern void set_irq_remapping_broken(void);
40extern int irq_remapping_prepare(void);
41extern int irq_remapping_enable(void);
42extern void irq_remapping_disable(void);
43extern int irq_remapping_reenable(int);
44extern int irq_remap_enable_fault_handling(void);
 
 
 
 
 
 
 
 
 
 
45extern void panic_if_irq_remap(const char *msg);
 
 
 
46
47/* Get parent irqdomain for interrupt remapping irqdomain */
48static inline struct irq_domain *arch_get_ir_parent_domain(void)
49{
50	return x86_vector_domain;
51}
52
53#else  /* CONFIG_IRQ_REMAP */
54
55static inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; }
 
56static inline void set_irq_remapping_broken(void) { }
57static inline int irq_remapping_prepare(void) { return -ENODEV; }
58static inline int irq_remapping_enable(void) { return -ENODEV; }
59static inline void irq_remapping_disable(void) { }
60static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
61static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
62
63static inline void panic_if_irq_remap(const char *msg)
64{
65}
66
 
 
 
 
 
 
 
 
 
 
67#endif /* CONFIG_IRQ_REMAP */
 
68#endif /* __X86_IRQ_REMAPPING_H */

 
  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
 27struct IO_APIC_route_entry;
 28struct io_apic_irq_attr;
 29struct irq_chip;
 30struct msi_msg;
 31struct pci_dev;
 32struct irq_cfg;
 
 
 
 
 
 
 
 
 
 
 
 
 
 33
 34#ifdef CONFIG_IRQ_REMAP
 35
 36extern void setup_irq_remapping_ops(void);
 37extern int irq_remapping_supported(void);
 
 38extern void set_irq_remapping_broken(void);
 39extern int irq_remapping_prepare(void);
 40extern int irq_remapping_enable(void);
 41extern void irq_remapping_disable(void);
 42extern int irq_remapping_reenable(int);
 43extern int irq_remap_enable_fault_handling(void);
 44extern 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);
 49extern void free_remapped_irq(int irq);
 50extern void compose_remapped_msi_msg(struct pci_dev *pdev,
 51				     unsigned int irq, unsigned int dest,
 52				     struct msi_msg *msg, u8 hpet_id);
 53extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
 54extern void panic_if_irq_remap(const char *msg);
 55extern bool setup_remapped_irq(int irq,
 56			       struct irq_cfg *cfg,
 57			       struct irq_chip *chip);
 58
 59void irq_remap_modify_chip_defaults(struct irq_chip *chip);
 
 
 
 
 60
 61#else  /* CONFIG_IRQ_REMAP */
 62
 63static inline void setup_irq_remapping_ops(void) { }
 64static inline int irq_remapping_supported(void) { return 0; }
 65static inline void set_irq_remapping_broken(void) { }
 66static inline int irq_remapping_prepare(void) { return -ENODEV; }
 67static inline int irq_remapping_enable(void) { return -ENODEV; }
 68static inline void irq_remapping_disable(void) { }
 69static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
 70static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
 71static 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}
 79static inline void free_remapped_irq(int irq) { }
 80static 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}
 85static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
 86{
 87	return -ENODEV;
 88}
 89
 90static inline void panic_if_irq_remap(const char *msg)
 91{
 92}
 93
 94static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
 95{
 96}
 97
 98static 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 */