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* Copyright (C) 2009-2010 Advanced Micro Devices, Inc.
* Author: Joerg Roedel <>
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "amd_iommu_types.h"
extern int amd_iommu_get_num_iommus(void);
extern int amd_iommu_init_dma_ops(void);
extern int amd_iommu_init_passthrough(void);
extern irqreturn_t amd_iommu_int_thread(int irq, void *data);
extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
extern void amd_iommu_apply_erratum_63(u16 devid);
extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
extern int amd_iommu_init_devices(void);
extern void amd_iommu_uninit_devices(void);
extern void amd_iommu_init_notifier(void);
extern int amd_iommu_init_api(void);
void amd_iommu_debugfs_setup(struct amd_iommu *iommu);
static inline void amd_iommu_debugfs_setup(struct amd_iommu *iommu) {}
/* Needed for interrupt remapping */
extern int amd_iommu_prepare(void);
extern int amd_iommu_enable(void);
extern void amd_iommu_disable(void);
extern int amd_iommu_reenable(int);
extern int amd_iommu_enable_faulting(void);
extern int amd_iommu_guest_ir;
/* IOMMUv2 specific functions */
struct iommu_domain;
extern bool amd_iommu_v2_supported(void);
extern int amd_iommu_register_ppr_notifier(struct notifier_block *nb);
extern int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb);
extern void amd_iommu_domain_direct_map(struct iommu_domain *dom);
extern int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids);
extern int amd_iommu_flush_page(struct iommu_domain *dom, int pasid,
u64 address);
extern int amd_iommu_flush_tlb(struct iommu_domain *dom, int pasid);
extern int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, int pasid,
unsigned long cr3);
extern int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, int pasid);
extern struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev);
extern int amd_iommu_create_irq_domain(struct amd_iommu *iommu);
static inline int amd_iommu_create_irq_domain(struct amd_iommu *iommu)
return 0;
#define PPR_SUCCESS 0x0
#define PPR_INVALID 0x1
#define PPR_FAILURE 0xf
extern int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid,
int status, int tag);
static inline bool is_rd890_iommu(struct pci_dev *pdev)
return (pdev->vendor == PCI_VENDOR_ID_ATI) &&
(pdev->device == PCI_DEVICE_ID_RD890_IOMMU);
static inline bool iommu_feature(struct amd_iommu *iommu, u64 f)
if (!(iommu->cap & (1 << IOMMU_CAP_EFR)))
return false;
return !!(iommu->features & f);
static inline u64 iommu_virt_to_phys(void *vaddr)
return (u64)__sme_set(virt_to_phys(vaddr));
static inline void *iommu_phys_to_virt(unsigned long paddr)
return phys_to_virt(__sme_clr(paddr));
extern bool translation_pre_enabled(struct amd_iommu *iommu);
extern struct iommu_dev_data *get_dev_data(struct device *dev);
#endif /* _ASM_X86_AMD_IOMMU_PROTO_H */