1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2009-2010 Advanced Micro Devices, Inc.
 4 * Author: Joerg Roedel <jroedel@suse.de>
 5 */
 6
 7#ifndef _ASM_X86_AMD_IOMMU_PROTO_H
 8#define _ASM_X86_AMD_IOMMU_PROTO_H
 9
10#include "amd_iommu_types.h"
11
12extern int amd_iommu_get_num_iommus(void);
13extern int amd_iommu_init_dma_ops(void);
14extern int amd_iommu_init_passthrough(void);
15extern irqreturn_t amd_iommu_int_thread(int irq, void *data);
16extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
17extern void amd_iommu_apply_erratum_63(u16 devid);
18extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
19extern int amd_iommu_init_devices(void);
20extern void amd_iommu_uninit_devices(void);
21extern void amd_iommu_init_notifier(void);
22extern int amd_iommu_init_api(void);
23
24#ifdef CONFIG_AMD_IOMMU_DEBUGFS
25void amd_iommu_debugfs_setup(struct amd_iommu *iommu);
26#else
27static inline void amd_iommu_debugfs_setup(struct amd_iommu *iommu) {}
28#endif
29
30/* Needed for interrupt remapping */
31extern int amd_iommu_prepare(void);
32extern int amd_iommu_enable(void);
33extern void amd_iommu_disable(void);
34extern int amd_iommu_reenable(int);
35extern int amd_iommu_enable_faulting(void);
36extern int amd_iommu_guest_ir;
37
38/* IOMMUv2 specific functions */
39struct iommu_domain;
40
41extern bool amd_iommu_v2_supported(void);
42extern int amd_iommu_register_ppr_notifier(struct notifier_block *nb);
43extern int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb);
44extern void amd_iommu_domain_direct_map(struct iommu_domain *dom);
45extern int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids);
46extern int amd_iommu_flush_page(struct iommu_domain *dom, int pasid,
47				u64 address);
48extern int amd_iommu_flush_tlb(struct iommu_domain *dom, int pasid);
49extern int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, int pasid,
50				     unsigned long cr3);
51extern int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, int pasid);
52extern struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev);
53
54#ifdef CONFIG_IRQ_REMAP
55extern int amd_iommu_create_irq_domain(struct amd_iommu *iommu);
56#else
57static inline int amd_iommu_create_irq_domain(struct amd_iommu *iommu)
58{
59	return 0;
60}
61#endif
62
63#define PPR_SUCCESS			0x0
64#define PPR_INVALID			0x1
65#define PPR_FAILURE			0xf
66
67extern int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid,
68				  int status, int tag);
69
70static inline bool is_rd890_iommu(struct pci_dev *pdev)
71{
72	return (pdev->vendor == PCI_VENDOR_ID_ATI) &&
73	       (pdev->device == PCI_DEVICE_ID_RD890_IOMMU);
74}
75
76static inline bool iommu_feature(struct amd_iommu *iommu, u64 f)
77{
78	if (!(iommu->cap & (1 << IOMMU_CAP_EFR)))
79		return false;
80
81	return !!(iommu->features & f);
82}
83
84static inline u64 iommu_virt_to_phys(void *vaddr)
85{
86	return (u64)__sme_set(virt_to_phys(vaddr));
87}
88
89static inline void *iommu_phys_to_virt(unsigned long paddr)
90{
91	return phys_to_virt(__sme_clr(paddr));
92}
93
94extern bool translation_pre_enabled(struct amd_iommu *iommu);
95extern struct iommu_dev_data *get_dev_data(struct device *dev);
96#endif /* _ASM_X86_AMD_IOMMU_PROTO_H  */