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 | ||
15 | #ifdef CONFIG_PCI_IOV | |
16 | ||
17 | extern int pci_enable_ats(struct pci_dev *dev, int ps); | |
18 | extern void pci_disable_ats(struct pci_dev *dev); | |
19 | extern 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 | ||
32 | #else /* CONFIG_PCI_IOV */ | |
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 | ||
53 | #endif /* CONFIG_PCI_IOV */ | |
54 | ||
c320b976 JR |
55 | #ifdef CONFIG_PCI_PRI |
56 | ||
57 | extern int pci_enable_pri(struct pci_dev *pdev, u32 reqs); | |
58 | extern void pci_disable_pri(struct pci_dev *pdev); | |
59 | extern bool pci_pri_enabled(struct pci_dev *pdev); | |
60 | extern int pci_reset_pri(struct pci_dev *pdev); | |
61 | extern bool pci_pri_stopped(struct pci_dev *pdev); | |
62 | extern int pci_pri_status(struct pci_dev *pdev); | |
63 | ||
64 | #else /* CONFIG_PCI_PRI */ | |
65 | ||
66 | static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs) | |
67 | { | |
68 | return -ENODEV; | |
69 | } | |
70 | ||
71 | static inline void pci_disable_pri(struct pci_dev *pdev) | |
72 | { | |
73 | } | |
74 | ||
75 | static inline bool pci_pri_enabled(struct pci_dev *pdev) | |
76 | { | |
77 | return false; | |
78 | } | |
79 | ||
80 | static inline int pci_reset_pri(struct pci_dev *pdev) | |
81 | { | |
82 | return -ENODEV; | |
83 | } | |
84 | ||
85 | static inline bool pci_pri_stopped(struct pci_dev *pdev) | |
86 | { | |
87 | return true; | |
88 | } | |
89 | ||
90 | static inline int pci_pri_status(struct pci_dev *pdev) | |
91 | { | |
92 | return -ENODEV; | |
93 | } | |
94 | #endif /* CONFIG_PCI_PRI */ | |
95 | ||
5cdede24 | 96 | #endif /* LINUX_PCI_ATS_H*/ |