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
12 extern int amd_iommu_get_num_iommus(void);
13 extern int amd_iommu_init_dma_ops(void);
14 extern int amd_iommu_init_passthrough(void);
15 extern irqreturn_t amd_iommu_int_thread(int irq, void *data);
16 extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
17 extern void amd_iommu_apply_erratum_63(u16 devid);
18 extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
19 extern int amd_iommu_init_devices(void);
20 extern void amd_iommu_uninit_devices(void);
21 extern void amd_iommu_init_notifier(void);
22 extern int amd_iommu_init_api(void);
23
24 #ifdef CONFIG_AMD_IOMMU_DEBUGFS
25 void amd_iommu_debugfs_setup(struct amd_iommu *iommu);
26 #else
amd_iommu_debugfs_setup(struct amd_iommu * iommu)27 static inline void amd_iommu_debugfs_setup(struct amd_iommu *iommu) {}
28 #endif
29
30 /* Needed for interrupt remapping */
31 extern int amd_iommu_prepare(void);
32 extern int amd_iommu_enable(void);
33 extern void amd_iommu_disable(void);
34 extern int amd_iommu_reenable(int);
35 extern int amd_iommu_enable_faulting(void);
36 extern int amd_iommu_guest_ir;
37
38 /* IOMMUv2 specific functions */
39 struct iommu_domain;
40
41 extern bool amd_iommu_v2_supported(void);
42 extern int amd_iommu_register_ppr_notifier(struct notifier_block *nb);
43 extern int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb);
44 extern void amd_iommu_domain_direct_map(struct iommu_domain *dom);
45 extern int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids);
46 extern int amd_iommu_flush_page(struct iommu_domain *dom, int pasid,
47 u64 address);
48 extern int amd_iommu_flush_tlb(struct iommu_domain *dom, int pasid);
49 extern int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, int pasid,
50 unsigned long cr3);
51 extern int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, int pasid);
52 extern struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev);
53
54 #ifdef CONFIG_IRQ_REMAP
55 extern int amd_iommu_create_irq_domain(struct amd_iommu *iommu);
56 #else
amd_iommu_create_irq_domain(struct amd_iommu * iommu)57 static 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
67 extern int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid,
68 int status, int tag);
69
is_rd890_iommu(struct pci_dev * pdev)70 static 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
iommu_feature(struct amd_iommu * iommu,u64 f)76 static 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
iommu_virt_to_phys(void * vaddr)84 static inline u64 iommu_virt_to_phys(void *vaddr)
85 {
86 return (u64)__sme_set(virt_to_phys(vaddr));
87 }
88
iommu_phys_to_virt(unsigned long paddr)89 static inline void *iommu_phys_to_virt(unsigned long paddr)
90 {
91 return phys_to_virt(__sme_clr(paddr));
92 }
93
94 extern bool translation_pre_enabled(struct amd_iommu *iommu);
95 extern struct iommu_dev_data *get_dev_data(struct device *dev);
96 #endif /* _ASM_X86_AMD_IOMMU_PROTO_H */
97