Root/drivers/iommu/amd_iommu_proto.h

1/*
2 * Copyright (C) 2009-2010 Advanced Micro Devices, Inc.
3 * Author: Joerg Roedel <joerg.roedel@amd.com>
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
24extern int amd_iommu_init_dma_ops(void);
25extern int amd_iommu_init_passthrough(void);
26extern irqreturn_t amd_iommu_int_thread(int irq, void *data);
27extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
28extern void amd_iommu_apply_erratum_63(u16 devid);
29extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
30extern int amd_iommu_init_devices(void);
31extern void amd_iommu_uninit_devices(void);
32extern void amd_iommu_init_notifier(void);
33extern void amd_iommu_init_api(void);
34
35/* IOMMUv2 specific functions */
36struct iommu_domain;
37
38extern bool amd_iommu_v2_supported(void);
39extern int amd_iommu_register_ppr_notifier(struct notifier_block *nb);
40extern int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb);
41extern void amd_iommu_domain_direct_map(struct iommu_domain *dom);
42extern int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids);
43extern int amd_iommu_flush_page(struct iommu_domain *dom, int pasid,
44                u64 address);
45extern int amd_iommu_flush_tlb(struct iommu_domain *dom, int pasid);
46extern int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, int pasid,
47                     unsigned long cr3);
48extern int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, int pasid);
49extern struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev);
50
51#define PPR_SUCCESS 0x0
52#define PPR_INVALID 0x1
53#define PPR_FAILURE 0xf
54
55extern int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid,
56                  int status, int tag);
57
58#ifndef CONFIG_AMD_IOMMU_STATS
59
60static inline void amd_iommu_stats_init(void) { }
61
62#endif /* !CONFIG_AMD_IOMMU_STATS */
63
64static inline bool is_rd890_iommu(struct pci_dev *pdev)
65{
66    return (pdev->vendor == PCI_VENDOR_ID_ATI) &&
67           (pdev->device == PCI_DEVICE_ID_RD890_IOMMU);
68}
69
70static inline bool iommu_feature(struct amd_iommu *iommu, u64 f)
71{
72    if (!(iommu->cap & (1 << IOMMU_CAP_EFR)))
73        return false;
74
75    return !!(iommu->features & f);
76}
77
78#endif /* _ASM_X86_AMD_IOMMU_PROTO_H */
79

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