blob: 071395251abfab41cd9fad47bd554f749d792bb4 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
#ifndef LINUX_PCI_ATS_H
#define LINUX_PCI_ATS_H
#include <linux/pci.h>
/* Address Translation Service */
struct pci_ats {
int pos; /* capability position */
int stu; /* Smallest Translation Unit */
int qdep; /* Invalidate Queue Depth */
int ref_cnt; /* Physical Function reference count */
unsigned int is_enabled:1; /* Enable bit is set */
};
#ifdef CONFIG_PCI_IOV
extern int pci_enable_ats(struct pci_dev *dev, int ps);
extern void pci_disable_ats(struct pci_dev *dev);
extern int pci_ats_queue_depth(struct pci_dev *dev);
/**
* pci_ats_enabled - query the ATS status
* @dev: the PCI device
*
* Returns 1 if ATS capability is enabled, or 0 if not.
*/
static inline int pci_ats_enabled(struct pci_dev *dev)
{
return dev->ats && dev->ats->is_enabled;
}
#else /* CONFIG_PCI_IOV */
static inline int pci_enable_ats(struct pci_dev *dev, int ps)
{
return -ENODEV;
}
static inline void pci_disable_ats(struct pci_dev *dev)
{
}
static inline int pci_ats_queue_depth(struct pci_dev *dev)
{
return -ENODEV;
}
static inline int pci_ats_enabled(struct pci_dev *dev)
{
return 0;
}
#endif /* CONFIG_PCI_IOV */
#ifdef CONFIG_PCI_PRI
extern int pci_enable_pri(struct pci_dev *pdev, u32 reqs);
extern void pci_disable_pri(struct pci_dev *pdev);
extern bool pci_pri_enabled(struct pci_dev *pdev);
extern int pci_reset_pri(struct pci_dev *pdev);
extern bool pci_pri_stopped(struct pci_dev *pdev);
extern int pci_pri_status(struct pci_dev *pdev);
#else /* CONFIG_PCI_PRI */
static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs)
{
return -ENODEV;
}
static inline void pci_disable_pri(struct pci_dev *pdev)
{
}
static inline bool pci_pri_enabled(struct pci_dev *pdev)
{
return false;
}
static inline int pci_reset_pri(struct pci_dev *pdev)
{
return -ENODEV;
}
static inline bool pci_pri_stopped(struct pci_dev *pdev)
{
return true;
}
static inline int pci_pri_status(struct pci_dev *pdev)
{
return -ENODEV;
}
#endif /* CONFIG_PCI_PRI */
#endif /* LINUX_PCI_ATS_H*/
|
