|
1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */
|
| 2 | +/* |
| 3 | + * Copyright (C) 2009-2010 Advanced Micro Devices, Inc. |
| 4 | + * Author: Joerg Roedel <[email protected]> |
| 5 | + */ |
2 | 6 |
|
3 | 7 | #ifndef AMD_IOMMU_H
|
4 | 8 | #define AMD_IOMMU_H
|
5 | 9 |
|
6 |
| -int __init add_special_device(u8 type, u8 id, u16 *devid, bool cmd_line); |
| 10 | +#include <linux/iommu.h> |
| 11 | + |
| 12 | +#include "amd_iommu_types.h" |
| 13 | + |
| 14 | +extern int amd_iommu_get_num_iommus(void); |
| 15 | +extern int amd_iommu_init_dma_ops(void); |
| 16 | +extern int amd_iommu_init_passthrough(void); |
| 17 | +extern irqreturn_t amd_iommu_int_thread(int irq, void *data); |
| 18 | +extern irqreturn_t amd_iommu_int_handler(int irq, void *data); |
| 19 | +extern void amd_iommu_apply_erratum_63(u16 devid); |
| 20 | +extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu); |
| 21 | +extern int amd_iommu_init_devices(void); |
| 22 | +extern void amd_iommu_uninit_devices(void); |
| 23 | +extern void amd_iommu_init_notifier(void); |
| 24 | +extern int amd_iommu_init_api(void); |
| 25 | + |
| 26 | +#ifdef CONFIG_AMD_IOMMU_DEBUGFS |
| 27 | +void amd_iommu_debugfs_setup(struct amd_iommu *iommu); |
| 28 | +#else |
| 29 | +static inline void amd_iommu_debugfs_setup(struct amd_iommu *iommu) {} |
| 30 | +#endif |
| 31 | + |
| 32 | +/* Needed for interrupt remapping */ |
| 33 | +extern int amd_iommu_prepare(void); |
| 34 | +extern int amd_iommu_enable(void); |
| 35 | +extern void amd_iommu_disable(void); |
| 36 | +extern int amd_iommu_reenable(int); |
| 37 | +extern int amd_iommu_enable_faulting(void); |
| 38 | +extern int amd_iommu_guest_ir; |
| 39 | + |
| 40 | +/* IOMMUv2 specific functions */ |
| 41 | +struct iommu_domain; |
| 42 | + |
| 43 | +extern bool amd_iommu_v2_supported(void); |
| 44 | +extern int amd_iommu_register_ppr_notifier(struct notifier_block *nb); |
| 45 | +extern int amd_iommu_unregister_ppr_notifier(struct notifier_block *nb); |
| 46 | +extern void amd_iommu_domain_direct_map(struct iommu_domain *dom); |
| 47 | +extern int amd_iommu_domain_enable_v2(struct iommu_domain *dom, int pasids); |
| 48 | +extern int amd_iommu_flush_page(struct iommu_domain *dom, int pasid, |
| 49 | + u64 address); |
| 50 | +extern int amd_iommu_flush_tlb(struct iommu_domain *dom, int pasid); |
| 51 | +extern int amd_iommu_domain_set_gcr3(struct iommu_domain *dom, int pasid, |
| 52 | + unsigned long cr3); |
| 53 | +extern int amd_iommu_domain_clear_gcr3(struct iommu_domain *dom, int pasid); |
| 54 | +extern struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev); |
| 55 | + |
| 56 | +#ifdef CONFIG_IRQ_REMAP |
| 57 | +extern int amd_iommu_create_irq_domain(struct amd_iommu *iommu); |
| 58 | +#else |
| 59 | +static inline int amd_iommu_create_irq_domain(struct amd_iommu *iommu) |
| 60 | +{ |
| 61 | + return 0; |
| 62 | +} |
| 63 | +#endif |
| 64 | + |
| 65 | +#define PPR_SUCCESS 0x0 |
| 66 | +#define PPR_INVALID 0x1 |
| 67 | +#define PPR_FAILURE 0xf |
| 68 | + |
| 69 | +extern int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid, |
| 70 | + int status, int tag); |
| 71 | + |
| 72 | +static inline bool is_rd890_iommu(struct pci_dev *pdev) |
| 73 | +{ |
| 74 | + return (pdev->vendor == PCI_VENDOR_ID_ATI) && |
| 75 | + (pdev->device == PCI_DEVICE_ID_RD890_IOMMU); |
| 76 | +} |
| 77 | + |
| 78 | +static inline bool iommu_feature(struct amd_iommu *iommu, u64 f) |
| 79 | +{ |
| 80 | + if (!(iommu->cap & (1 << IOMMU_CAP_EFR))) |
| 81 | + return false; |
| 82 | + |
| 83 | + return !!(iommu->features & f); |
| 84 | +} |
| 85 | + |
| 86 | +static inline u64 iommu_virt_to_phys(void *vaddr) |
| 87 | +{ |
| 88 | + return (u64)__sme_set(virt_to_phys(vaddr)); |
| 89 | +} |
| 90 | + |
| 91 | +static inline void *iommu_phys_to_virt(unsigned long paddr) |
| 92 | +{ |
| 93 | + return phys_to_virt(__sme_clr(paddr)); |
| 94 | +} |
| 95 | + |
| 96 | +extern bool translation_pre_enabled(struct amd_iommu *iommu); |
| 97 | +extern bool amd_iommu_is_attach_deferred(struct iommu_domain *domain, |
| 98 | + struct device *dev); |
| 99 | +extern int __init add_special_device(u8 type, u8 id, u16 *devid, |
| 100 | + bool cmd_line); |
7 | 101 |
|
8 | 102 | #ifdef CONFIG_DMI
|
9 | 103 | void amd_iommu_apply_ivrs_quirks(void);
|
|
0 commit comments