1 /*
2 * Copyright (C) 2009-2010 Advanced Micro Devices, Inc.
3 * Author: Joerg Roedel <jroedel@suse.de>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published
7 * by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18
19 #ifndef _ASM_X86_AMD_IOMMU_PROTO_H
20 #define _ASM_X86_AMD_IOMMU_PROTO_H
21
22 #include "amd_iommu_types.h"
23
24 extern int amd_iommu_get_num_iommus(void);
25 extern int amd_iommu_init_dma_ops(void);
26 extern int amd_iommu_init_passthrough(void);
27 extern irqreturn_t amd_iommu_int_thread(int irq, void *data);
28 extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
29 extern void amd_iommu_apply_erratum_63(u16 devid);
30 extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
31 extern int amd_iommu_init_devices(void);
32 extern void amd_iommu_uninit_devices(void);
33 extern void amd_iommu_init_notifier(void);
34 extern int amd_iommu_init_api(void);
35
36 #ifdef CONFIG_AMD_IOMMU_DEBUGFS
37 void amd_iommu_debugfs_setup(struct amd_iommu *iommu);
38 #else
amd_iommu_debugfs_setup(struct amd_iommu * iommu)39 static inline void amd_iommu_debugfs_setup(struct amd_iommu *iommu) {}
40 #endif
41
42 /* Needed for interrupt remapping */
43 extern int amd_iommu_prepare(void);
44 extern int amd_iommu_enable(void);
45 extern void amd_iommu_disable(void);
46 extern int amd_iommu_reenable(int);
47 extern int amd_iommu_enable_faulting(void);
48 extern int amd_iommu_guest_ir;
49
50 /* IOMMUv2 specific functions */
51 struct iommu_domain;
52
53 extern bool amd_iommu_v2_supported(void);
54 extern int amd_iommu_register_ppr_notifier(struct notifier_block *nb);
55 extern int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb);
56 extern void amd_iommu_domain_direct_map(struct iommu_domain *dom);
57 extern int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids);
58 extern int amd_iommu_flush_page(struct iommu_domain *dom, int pasid,
59 u64 address);
60 extern int amd_iommu_flush_tlb(struct iommu_domain *dom, int pasid);
61 extern int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, int pasid,
62 unsigned long cr3);
63 extern int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, int pasid);
64 extern struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev);
65
66 #ifdef CONFIG_IRQ_REMAP
67 extern int amd_iommu_create_irq_domain(struct amd_iommu *iommu);
68 #else
amd_iommu_create_irq_domain(struct amd_iommu * iommu)69 static inline int amd_iommu_create_irq_domain(struct amd_iommu *iommu)
70 {
71 return 0;
72 }
73 #endif
74
75 #define PPR_SUCCESS 0x0
76 #define PPR_INVALID 0x1
77 #define PPR_FAILURE 0xf
78
79 extern int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid,
80 int status, int tag);
81
is_rd890_iommu(struct pci_dev * pdev)82 static inline bool is_rd890_iommu(struct pci_dev *pdev)
83 {
84 return (pdev->vendor == PCI_VENDOR_ID_ATI) &&
85 (pdev->device == PCI_DEVICE_ID_RD890_IOMMU);
86 }
87
iommu_feature(struct amd_iommu * iommu,u64 f)88 static inline bool iommu_feature(struct amd_iommu *iommu, u64 f)
89 {
90 if (!(iommu->cap & (1 << IOMMU_CAP_EFR)))
91 return false;
92
93 return !!(iommu->features & f);
94 }
95
iommu_virt_to_phys(void * vaddr)96 static inline u64 iommu_virt_to_phys(void *vaddr)
97 {
98 return (u64)__sme_set(virt_to_phys(vaddr));
99 }
100
iommu_phys_to_virt(unsigned long paddr)101 static inline void *iommu_phys_to_virt(unsigned long paddr)
102 {
103 return phys_to_virt(__sme_clr(paddr));
104 }
105
106 extern bool translation_pre_enabled(struct amd_iommu *iommu);
107 extern struct iommu_dev_data *get_dev_data(struct device *dev);
108 #endif /* _ASM_X86_AMD_IOMMU_PROTO_H */
109
