Commit | Line | Data |
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5cdede24 JR |
1 | #ifndef LINUX_PCI_ATS_H |
2 | #define LINUX_PCI_ATS_H | |
3 | ||
db3c33c6 JR |
4 | #include <linux/pci.h> |
5 | ||
5cdede24 JR |
6 | /* Address Translation Service */ |
7 | struct pci_ats { | |
8 | int pos; /* capability position */ | |
9 | int stu; /* Smallest Translation Unit */ | |
10 | int qdep; /* Invalidate Queue Depth */ | |
11 | int ref_cnt; /* Physical Function reference count */ | |
12 | unsigned int is_enabled:1; /* Enable bit is set */ | |
13 | }; | |
14 | ||
466b3ddf | 15 | #ifdef CONFIG_PCI_ATS |
5cdede24 | 16 | |
f39d5b72 BH |
17 | int pci_enable_ats(struct pci_dev *dev, int ps); |
18 | void pci_disable_ats(struct pci_dev *dev); | |
19 | int pci_ats_queue_depth(struct pci_dev *dev); | |
c320b976 | 20 | |
5cdede24 JR |
21 | /** |
22 | * pci_ats_enabled - query the ATS status | |
23 | * @dev: the PCI device | |
24 | * | |
25 | * Returns 1 if ATS capability is enabled, or 0 if not. | |
26 | */ | |
27 | static inline int pci_ats_enabled(struct pci_dev *dev) | |
28 | { | |
29 | return dev->ats && dev->ats->is_enabled; | |
30 | } | |
31 | ||
466b3ddf | 32 | #else /* CONFIG_PCI_ATS */ |
5cdede24 JR |
33 | |
34 | static inline int pci_enable_ats(struct pci_dev *dev, int ps) | |
35 | { | |
36 | return -ENODEV; | |
37 | } | |
38 | ||
39 | static inline void pci_disable_ats(struct pci_dev *dev) | |
40 | { | |
41 | } | |
42 | ||
43 | static inline int pci_ats_queue_depth(struct pci_dev *dev) | |
44 | { | |
45 | return -ENODEV; | |
46 | } | |
47 | ||
48 | static inline int pci_ats_enabled(struct pci_dev *dev) | |
49 | { | |
50 | return 0; | |
51 | } | |
52 | ||
466b3ddf | 53 | #endif /* CONFIG_PCI_ATS */ |
5cdede24 | 54 | |
c320b976 JR |
55 | #ifdef CONFIG_PCI_PRI |
56 | ||
f39d5b72 BH |
57 | int pci_enable_pri(struct pci_dev *pdev, u32 reqs); |
58 | void pci_disable_pri(struct pci_dev *pdev); | |
f39d5b72 | 59 | int pci_reset_pri(struct pci_dev *pdev); |
c320b976 JR |
60 | |
61 | #else /* CONFIG_PCI_PRI */ | |
62 | ||
63 | static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs) | |
64 | { | |
65 | return -ENODEV; | |
66 | } | |
67 | ||
68 | static inline void pci_disable_pri(struct pci_dev *pdev) | |
69 | { | |
70 | } | |
71 | ||
c320b976 JR |
72 | static inline int pci_reset_pri(struct pci_dev *pdev) |
73 | { | |
74 | return -ENODEV; | |
75 | } | |
76 | ||
c320b976 JR |
77 | #endif /* CONFIG_PCI_PRI */ |
78 | ||
086ac11f JR |
79 | #ifdef CONFIG_PCI_PASID |
80 | ||
f39d5b72 BH |
81 | int pci_enable_pasid(struct pci_dev *pdev, int features); |
82 | void pci_disable_pasid(struct pci_dev *pdev); | |
83 | int pci_pasid_features(struct pci_dev *pdev); | |
84 | int pci_max_pasids(struct pci_dev *pdev); | |
086ac11f JR |
85 | |
86 | #else /* CONFIG_PCI_PASID */ | |
87 | ||
88 | static inline int pci_enable_pasid(struct pci_dev *pdev, int features) | |
89 | { | |
90 | return -EINVAL; | |
91 | } | |
92 | ||
93 | static inline void pci_disable_pasid(struct pci_dev *pdev) | |
94 | { | |
95 | } | |
96 | ||
97 | static inline int pci_pasid_features(struct pci_dev *pdev) | |
98 | { | |
99 | return -EINVAL; | |
100 | } | |
101 | ||
102 | static inline int pci_max_pasids(struct pci_dev *pdev) | |
103 | { | |
104 | return -EINVAL; | |
105 | } | |
106 | ||
107 | #endif /* CONFIG_PCI_PASID */ | |
108 | ||
109 | ||
5cdede24 | 110 | #endif /* LINUX_PCI_ATS_H*/ |