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#ifndef CONFIG_AMD_IOMMU_STATS
35
36static inline void amd_iommu_stats_init(void) { }
37
38#endif /* !CONFIG_AMD_IOMMU_STATS */
39
40static inline bool is_rd890_iommu(struct pci_dev *pdev)
41{
42	return (pdev->vendor == PCI_VENDOR_ID_ATI) &&
43	       (pdev->device == PCI_DEVICE_ID_RD890_IOMMU);
44}
45
46static inline bool iommu_feature(struct amd_iommu *iommu, u64 f)
47{
48	if (!(iommu->cap & (1 << IOMMU_CAP_EFR)))
49		return false;
50
51	return !!(iommu->features & f);
52}
53
54#endif /* _ASM_X86_AMD_IOMMU_PROTO_H  */

  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
 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 int amd_iommu_init_api(void);
 34
 35/* Needed for interrupt remapping */
 36extern int amd_iommu_prepare(void);
 37extern int amd_iommu_enable(void);
 38extern void amd_iommu_disable(void);
 39extern int amd_iommu_reenable(int);
 40extern int amd_iommu_enable_faulting(void);
 41
 42/* IOMMUv2 specific functions */
 43struct iommu_domain;
 44
 45extern bool amd_iommu_v2_supported(void);
 46extern int amd_iommu_register_ppr_notifier(struct notifier_block *nb);
 47extern int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb);
 48extern void amd_iommu_domain_direct_map(struct iommu_domain *dom);
 49extern int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids);
 50extern int amd_iommu_flush_page(struct iommu_domain *dom, int pasid,
 51				u64 address);
 52extern int amd_iommu_flush_tlb(struct iommu_domain *dom, int pasid);
 53extern int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, int pasid,
 54				     unsigned long cr3);
 55extern int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, int pasid);
 56extern struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev);
 57
 58/* IOMMU Performance Counter functions */
 59extern bool amd_iommu_pc_supported(void);
 60extern u8 amd_iommu_pc_get_max_banks(u16 devid);
 61extern u8 amd_iommu_pc_get_max_counters(u16 devid);
 62extern int amd_iommu_pc_get_set_reg_val(u16 devid, u8 bank, u8 cntr, u8 fxn,
 63				    u64 *value, bool is_write);
 64
 65#ifdef CONFIG_IRQ_REMAP
 66extern int amd_iommu_create_irq_domain(struct amd_iommu *iommu);
 67#else
 68static inline int amd_iommu_create_irq_domain(struct amd_iommu *iommu)
 69{
 70	return 0;
 71}
 72#endif
 73
 74#define PPR_SUCCESS			0x0
 75#define PPR_INVALID			0x1
 76#define PPR_FAILURE			0xf
 77
 78extern int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid,
 79				  int status, int tag);
 80
 81#ifndef CONFIG_AMD_IOMMU_STATS
 82
 83static inline void amd_iommu_stats_init(void) { }
 84
 85#endif /* !CONFIG_AMD_IOMMU_STATS */
 86
 87static inline bool is_rd890_iommu(struct pci_dev *pdev)
 88{
 89	return (pdev->vendor == PCI_VENDOR_ID_ATI) &&
 90	       (pdev->device == PCI_DEVICE_ID_RD890_IOMMU);
 91}
 92
 93static inline bool iommu_feature(struct amd_iommu *iommu, u64 f)
 94{
 95	if (!(iommu->cap & (1 << IOMMU_CAP_EFR)))
 96		return false;
 97
 98	return !!(iommu->features & f);
 99}
100
101#endif /* _ASM_X86_AMD_IOMMU_PROTO_H  */