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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (C) 2009-2010 Advanced Micro Devices, Inc.
- * Author: Joerg Roedel <jroedel@suse.de>
- */
- #ifndef AMD_IOMMU_H
- #define AMD_IOMMU_H
- #include <linux/iommu.h>
- #include "amd_iommu_types.h"
- extern int amd_iommu_get_num_iommus(void);
- extern int amd_iommu_init_dma_ops(void);
- extern int amd_iommu_init_passthrough(void);
- extern irqreturn_t amd_iommu_int_thread(int irq, void *data);
- extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
- extern void amd_iommu_apply_erratum_63(u16 devid);
- extern void amd_iommu_restart_event_logging(struct amd_iommu *iommu);
- extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
- extern int amd_iommu_init_devices(void);
- extern void amd_iommu_uninit_devices(void);
- extern void amd_iommu_init_notifier(void);
- extern int amd_iommu_init_api(void);
- #ifdef CONFIG_AMD_IOMMU_DEBUGFS
- void amd_iommu_debugfs_setup(struct amd_iommu *iommu);
- #else
- static inline void amd_iommu_debugfs_setup(struct amd_iommu *iommu) {}
- #endif
- /* Needed for interrupt remapping */
- extern int amd_iommu_prepare(void);
- extern int amd_iommu_enable(void);
- extern void amd_iommu_disable(void);
- extern int amd_iommu_reenable(int);
- extern int amd_iommu_enable_faulting(void);
- extern int amd_iommu_guest_ir;
- /* IOMMUv2 specific functions */
- struct iommu_domain;
- extern bool amd_iommu_v2_supported(void);
- extern struct amd_iommu *get_amd_iommu(unsigned int idx);
- extern u8 amd_iommu_pc_get_max_banks(unsigned int idx);
- extern bool amd_iommu_pc_supported(void);
- extern u8 amd_iommu_pc_get_max_counters(unsigned int idx);
- extern int amd_iommu_pc_get_reg(struct amd_iommu *iommu, u8 bank, u8 cntr,
- u8 fxn, u64 *value);
- extern int amd_iommu_pc_set_reg(struct amd_iommu *iommu, u8 bank, u8 cntr,
- u8 fxn, u64 *value);
- extern int amd_iommu_register_ppr_notifier(struct notifier_block *nb);
- extern int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb);
- extern void amd_iommu_domain_direct_map(struct iommu_domain *dom);
- extern int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids);
- extern int amd_iommu_flush_page(struct iommu_domain *dom, u32 pasid,
- u64 address);
- extern int amd_iommu_flush_tlb(struct iommu_domain *dom, u32 pasid);
- extern int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, u32 pasid,
- unsigned long cr3);
- extern int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, u32 pasid);
- extern struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev);
- #ifdef CONFIG_IRQ_REMAP
- extern int amd_iommu_create_irq_domain(struct amd_iommu *iommu);
- #else
- static inline int amd_iommu_create_irq_domain(struct amd_iommu *iommu)
- {
- return 0;
- }
- #endif
- #define PPR_SUCCESS 0x0
- #define PPR_INVALID 0x1
- #define PPR_FAILURE 0xf
- extern int amd_iommu_complete_ppr(struct pci_dev *pdev, u32 pasid,
- int status, int tag);
- static inline bool is_rd890_iommu(struct pci_dev *pdev)
- {
- return (pdev->vendor == PCI_VENDOR_ID_ATI) &&
- (pdev->device == PCI_DEVICE_ID_RD890_IOMMU);
- }
- static inline bool iommu_feature(struct amd_iommu *iommu, u64 mask)
- {
- return !!(iommu->features & mask);
- }
- static inline u64 iommu_virt_to_phys(void *vaddr)
- {
- return (u64)__sme_set(virt_to_phys(vaddr));
- }
- static inline void *iommu_phys_to_virt(unsigned long paddr)
- {
- return phys_to_virt(__sme_clr(paddr));
- }
- extern bool translation_pre_enabled(struct amd_iommu *iommu);
- extern bool amd_iommu_is_attach_deferred(struct iommu_domain *domain,
- struct device *dev);
- extern int __init add_special_device(u8 type, u8 id, u16 *devid,
- bool cmd_line);
- #ifdef CONFIG_DMI
- void amd_iommu_apply_ivrs_quirks(void);
- #else
- static inline void amd_iommu_apply_ivrs_quirks(void) { }
- #endif
- #endif
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