18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * Copyright (C) 2012 Advanced Micro Devices, Inc. 48c2ecf20Sopenharmony_ci * Author: Joerg Roedel <joerg.roedel@amd.com> 58c2ecf20Sopenharmony_ci * 68c2ecf20Sopenharmony_ci * This header file contains the interface of the interrupt remapping code to 78c2ecf20Sopenharmony_ci * the x86 interrupt management code. 88c2ecf20Sopenharmony_ci */ 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ci#ifndef __X86_IRQ_REMAPPING_H 118c2ecf20Sopenharmony_ci#define __X86_IRQ_REMAPPING_H 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ci#include <asm/irqdomain.h> 148c2ecf20Sopenharmony_ci#include <asm/hw_irq.h> 158c2ecf20Sopenharmony_ci#include <asm/io_apic.h> 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_cistruct msi_msg; 188c2ecf20Sopenharmony_cistruct irq_alloc_info; 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_cienum irq_remap_cap { 218c2ecf20Sopenharmony_ci IRQ_POSTING_CAP = 0, 228c2ecf20Sopenharmony_ci}; 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_cienum { 258c2ecf20Sopenharmony_ci IRQ_REMAP_XAPIC_MODE, 268c2ecf20Sopenharmony_ci IRQ_REMAP_X2APIC_MODE, 278c2ecf20Sopenharmony_ci}; 288c2ecf20Sopenharmony_ci 298c2ecf20Sopenharmony_cistruct vcpu_data { 308c2ecf20Sopenharmony_ci u64 pi_desc_addr; /* Physical address of PI Descriptor */ 318c2ecf20Sopenharmony_ci u32 vector; /* Guest vector of the interrupt */ 328c2ecf20Sopenharmony_ci}; 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ci#ifdef CONFIG_IRQ_REMAP 358c2ecf20Sopenharmony_ci 368c2ecf20Sopenharmony_ciextern raw_spinlock_t irq_2_ir_lock; 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ciextern bool irq_remapping_cap(enum irq_remap_cap cap); 398c2ecf20Sopenharmony_ciextern void set_irq_remapping_broken(void); 408c2ecf20Sopenharmony_ciextern int irq_remapping_prepare(void); 418c2ecf20Sopenharmony_ciextern int irq_remapping_enable(void); 428c2ecf20Sopenharmony_ciextern void irq_remapping_disable(void); 438c2ecf20Sopenharmony_ciextern int irq_remapping_reenable(int); 448c2ecf20Sopenharmony_ciextern int irq_remap_enable_fault_handling(void); 458c2ecf20Sopenharmony_ciextern void panic_if_irq_remap(const char *msg); 468c2ecf20Sopenharmony_ci 478c2ecf20Sopenharmony_ciextern struct irq_domain * 488c2ecf20Sopenharmony_ciirq_remapping_get_irq_domain(struct irq_alloc_info *info); 498c2ecf20Sopenharmony_ci 508c2ecf20Sopenharmony_ci/* Create PCI MSI/MSIx irqdomain, use @parent as the parent irqdomain. */ 518c2ecf20Sopenharmony_ciextern struct irq_domain * 528c2ecf20Sopenharmony_ciarch_create_remap_msi_irq_domain(struct irq_domain *par, const char *n, int id); 538c2ecf20Sopenharmony_ci 548c2ecf20Sopenharmony_ci/* Get parent irqdomain for interrupt remapping irqdomain */ 558c2ecf20Sopenharmony_cistatic inline struct irq_domain *arch_get_ir_parent_domain(void) 568c2ecf20Sopenharmony_ci{ 578c2ecf20Sopenharmony_ci return x86_vector_domain; 588c2ecf20Sopenharmony_ci} 598c2ecf20Sopenharmony_ci 608c2ecf20Sopenharmony_ci#else /* CONFIG_IRQ_REMAP */ 618c2ecf20Sopenharmony_ci 628c2ecf20Sopenharmony_cistatic inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; } 638c2ecf20Sopenharmony_cistatic inline void set_irq_remapping_broken(void) { } 648c2ecf20Sopenharmony_cistatic inline int irq_remapping_prepare(void) { return -ENODEV; } 658c2ecf20Sopenharmony_cistatic inline int irq_remapping_enable(void) { return -ENODEV; } 668c2ecf20Sopenharmony_cistatic inline void irq_remapping_disable(void) { } 678c2ecf20Sopenharmony_cistatic inline int irq_remapping_reenable(int eim) { return -ENODEV; } 688c2ecf20Sopenharmony_cistatic inline int irq_remap_enable_fault_handling(void) { return -ENODEV; } 698c2ecf20Sopenharmony_ci 708c2ecf20Sopenharmony_cistatic inline void panic_if_irq_remap(const char *msg) 718c2ecf20Sopenharmony_ci{ 728c2ecf20Sopenharmony_ci} 738c2ecf20Sopenharmony_ci 748c2ecf20Sopenharmony_cistatic inline struct irq_domain * 758c2ecf20Sopenharmony_ciirq_remapping_get_irq_domain(struct irq_alloc_info *info) 768c2ecf20Sopenharmony_ci{ 778c2ecf20Sopenharmony_ci return NULL; 788c2ecf20Sopenharmony_ci} 798c2ecf20Sopenharmony_ci 808c2ecf20Sopenharmony_ci#endif /* CONFIG_IRQ_REMAP */ 818c2ecf20Sopenharmony_ci#endif /* __X86_IRQ_REMAPPING_H */ 82