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Joerg Roedel6a9401a2009-11-20 13:22:21 +01001/*
Joerg Roedel5d0d7152010-10-13 11:13:21 +02002 * Copyright (C) 2009-2010 Advanced Micro Devices, Inc.
Joerg Roedel6a9401a2009-11-20 13:22:21 +01003 * 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
Joerg Roedel403f81d2011-06-14 16:44:25 +020022#include "amd_iommu_types.h"
Joerg Roedel6a9401a2009-11-20 13:22:21 +010023
24extern int amd_iommu_init_dma_ops(void);
25extern int amd_iommu_init_passthrough(void);
Joerg Roedel72fe00f2011-05-10 10:50:42 +020026extern irqreturn_t amd_iommu_int_thread(int irq, void *data);
Joerg Roedel6a9401a2009-11-20 13:22:21 +010027extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
Joerg Roedel6a9401a2009-11-20 13:22:21 +010028extern void amd_iommu_apply_erratum_63(u16 devid);
29extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
Joerg Roedelb7cc9552009-12-10 11:03:39 +010030extern int amd_iommu_init_devices(void);
31extern void amd_iommu_uninit_devices(void);
Joerg Roedel8638c492009-12-10 11:12:25 +010032extern void amd_iommu_init_notifier(void);
Joerg Roedelf5325092010-01-22 17:44:35 +010033extern void amd_iommu_init_api(void);
Joerg Roedel400a28a2011-11-28 15:11:02 +010034
Joerg Roedel6b474b82012-06-26 16:46:04 +020035/* Needed for interrupt remapping */
36extern int amd_iommu_supported(void);
37extern int amd_iommu_prepare(void);
38extern int amd_iommu_enable(void);
39extern void amd_iommu_disable(void);
40extern int amd_iommu_reenable(int);
41extern int amd_iommu_enable_faulting(void);
42
Joerg Roedel72e1dcc2011-11-10 19:13:51 +010043/* IOMMUv2 specific functions */
Joerg Roedel132bd682011-11-17 14:18:46 +010044struct iommu_domain;
45
Joerg Roedel400a28a2011-11-28 15:11:02 +010046extern bool amd_iommu_v2_supported(void);
Joerg Roedel72e1dcc2011-11-10 19:13:51 +010047extern int amd_iommu_register_ppr_notifier(struct notifier_block *nb);
48extern int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb);
Joerg Roedel132bd682011-11-17 14:18:46 +010049extern void amd_iommu_domain_direct_map(struct iommu_domain *dom);
Joerg Roedel52815b72011-11-17 17:24:28 +010050extern int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids);
Joerg Roedel22e266c2011-11-21 15:59:08 +010051extern int amd_iommu_flush_page(struct iommu_domain *dom, int pasid,
52 u64 address);
53extern int amd_iommu_flush_tlb(struct iommu_domain *dom, int pasid);
Joerg Roedelb16137b2011-11-21 16:50:23 +010054extern int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, int pasid,
55 unsigned long cr3);
56extern int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, int pasid);
Joerg Roedelf3572db2011-11-23 12:36:25 +010057extern struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev);
Joerg Roedelb16137b2011-11-21 16:50:23 +010058
Steven L Kinney30861dd2013-06-05 16:11:48 -050059/* IOMMU Performance Counter functions */
60extern bool amd_iommu_pc_supported(void);
61extern u8 amd_iommu_pc_get_max_banks(u16 devid);
62extern u8 amd_iommu_pc_get_max_counters(u16 devid);
63extern int amd_iommu_pc_get_set_reg_val(u16 devid, u8 bank, u8 cntr, u8 fxn,
64 u64 *value, bool is_write);
65
Joerg Roedelc99afa22011-11-21 18:19:25 +010066#define PPR_SUCCESS 0x0
67#define PPR_INVALID 0x1
68#define PPR_FAILURE 0xf
69
70extern int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid,
71 int status, int tag);
Joerg Roedel400a28a2011-11-28 15:11:02 +010072
Joerg Roedel6a9401a2009-11-20 13:22:21 +010073#ifndef CONFIG_AMD_IOMMU_STATS
74
75static inline void amd_iommu_stats_init(void) { }
76
77#endif /* !CONFIG_AMD_IOMMU_STATS */
78
Joerg Roedel4c894f42010-09-23 15:15:19 +020079static inline bool is_rd890_iommu(struct pci_dev *pdev)
80{
81 return (pdev->vendor == PCI_VENDOR_ID_ATI) &&
82 (pdev->device == PCI_DEVICE_ID_RD890_IOMMU);
83}
84
Joerg Roedeld99ddec2011-04-11 11:03:18 +020085static inline bool iommu_feature(struct amd_iommu *iommu, u64 f)
86{
87 if (!(iommu->cap & (1 << IOMMU_CAP_EFR)))
88 return false;
89
90 return !!(iommu->features & f);
91}
92
Joerg Roedel6a9401a2009-11-20 13:22:21 +010093#endif /* _ASM_X86_AMD_IOMMU_PROTO_H */