| | 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_init_dma_ops(void); |
| | 25 | extern int amd_iommu_init_passthrough(void); |
| | 26 | extern irqreturn_t amd_iommu_int_thread(int irq, void *data); |
| | 27 | extern irqreturn_t amd_iommu_int_handler(int irq, void *data); |
| | 28 | extern void amd_iommu_apply_erratum_63(u16 devid); |
| | 29 | extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu); |
| | 30 | extern int amd_iommu_init_devices(void); |
| | 31 | extern void amd_iommu_uninit_devices(void); |
| | 32 | extern void amd_iommu_init_notifier(void); |
| | 33 | extern int amd_iommu_init_api(void); |
| | 34 | |
| | 35 | /* Needed for interrupt remapping */ |
| | 36 | extern int amd_iommu_prepare(void); |
| | 37 | extern int amd_iommu_enable(void); |
| | 38 | extern void amd_iommu_disable(void); |
| | 39 | extern int amd_iommu_reenable(int); |
| | 40 | extern int amd_iommu_enable_faulting(void); |
| | 41 | extern int amd_iommu_guest_ir; |
| | 42 | |
| | 43 | /* IOMMUv2 specific functions */ |
| | 44 | struct iommu_domain; |
| | 45 | |
| | 46 | extern bool amd_iommu_v2_supported(void); |
| | 47 | extern int amd_iommu_register_ppr_notifier(struct notifier_block *nb); |
| | 48 | extern int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb); |
| | 49 | extern void amd_iommu_domain_direct_map(struct iommu_domain *dom); |
| | 50 | extern int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids); |
| | 51 | extern int amd_iommu_flush_page(struct iommu_domain *dom, int pasid, |
| | 52 | u64 address); |
| | 53 | extern int amd_iommu_flush_tlb(struct iommu_domain *dom, int pasid); |
| | 54 | extern int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, int pasid, |
| | 55 | unsigned long cr3); |
| | 56 | extern int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, int pasid); |
| | 57 | extern struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev); |
| | 58 | |
| | 59 | /* IOMMU Performance Counter functions */ |
| | 60 | extern bool amd_iommu_pc_supported(void); |
| | 61 | extern u8 amd_iommu_pc_get_max_banks(u16 devid); |
| | 62 | extern u8 amd_iommu_pc_get_max_counters(u16 devid); |
| | 63 | extern int amd_iommu_pc_get_set_reg_val(u16 devid, u8 bank, u8 cntr, u8 fxn, |
| | 64 | u64 *value, bool is_write); |
| | 65 | |
| | 66 | #ifdef CONFIG_IRQ_REMAP |
| | 67 | extern int amd_iommu_create_irq_domain(struct amd_iommu *iommu); |
| | 68 | #else |
| | 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 | |
| | 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 | |
| | 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 | |
| | 96 | #endif /* _ASM_X86_AMD_IOMMU_PROTO_H */ |
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