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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright (C) 2007-2010 Advanced Micro Devices, Inc.4 * Author: Joerg Roedel <joerg.roedel@amd.com>5 * Leo Duran <leo.duran@amd.com>6 */7 8#ifndef _ASM_X86_AMD_IOMMU_H9#define _ASM_X86_AMD_IOMMU_H10 11#include <linux/types.h>12 13struct amd_iommu;14 15/*16 * This is mainly used to communicate information back-and-forth17 * between SVM and IOMMU for setting up and tearing down posted18 * interrupt19 */20struct amd_iommu_pi_data {21 u32 ga_tag;22 u32 prev_ga_tag;23 u64 base;24 bool is_guest_mode;25 struct vcpu_data *vcpu_data;26 void *ir_data;27};28 29#ifdef CONFIG_AMD_IOMMU30 31struct task_struct;32struct pci_dev;33 34extern int amd_iommu_detect(void);35 36#else /* CONFIG_AMD_IOMMU */37 38static inline int amd_iommu_detect(void) { return -ENODEV; }39 40#endif /* CONFIG_AMD_IOMMU */41 42#if defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP)43 44/* IOMMU AVIC Function */45extern int amd_iommu_register_ga_log_notifier(int (*notifier)(u32));46 47extern int48amd_iommu_update_ga(int cpu, bool is_run, void *data);49 50extern int amd_iommu_activate_guest_mode(void *data);51extern int amd_iommu_deactivate_guest_mode(void *data);52 53#else /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */54 55static inline int56amd_iommu_register_ga_log_notifier(int (*notifier)(u32))57{58 return 0;59}60 61static inline int62amd_iommu_update_ga(int cpu, bool is_run, void *data)63{64 return 0;65}66 67static inline int amd_iommu_activate_guest_mode(void *data)68{69 return 0;70}71 72static inline int amd_iommu_deactivate_guest_mode(void *data)73{74 return 0;75}76#endif /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */77 78int amd_iommu_get_num_iommus(void);79bool amd_iommu_pc_supported(void);80u8 amd_iommu_pc_get_max_banks(unsigned int idx);81u8 amd_iommu_pc_get_max_counters(unsigned int idx);82int amd_iommu_pc_set_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, u8 fxn,83 u64 *value);84int amd_iommu_pc_get_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, u8 fxn,85 u64 *value);86struct amd_iommu *get_amd_iommu(unsigned int idx);87 88#ifdef CONFIG_KVM_AMD_SEV89int amd_iommu_snp_disable(void);90#else91static inline int amd_iommu_snp_disable(void) { return 0; }92#endif93 94#endif /* _ASM_X86_AMD_IOMMU_H */95