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gerrit-public.fairphone.software / kernel / msm-4.9 / b13a8a99897a15b5f2f10722ac8d443df414f630 / . / include / linux / pci-ats.h
blob: 72031785fe1d810f186257a33e66ddb3147b9b59 [file] [log] [blame]
Joerg Roedel5cdede22011-04-04 15:55:18 +0200[diff] [blame]1#ifndef LINUX_PCI_ATS_H
2#define LINUX_PCI_ATS_H
3
Joerg Roedeldb3c33c2011-09-27 15:57:13 +0200[diff] [blame]4#include <linux/pci.h>
5
Joerg Roedel5cdede22011-04-04 15:55:18 +0200[diff] [blame]6/* Address Translation Service */
7struct 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
Joerg Roedel466b3dd2011-10-30 16:35:08 +0100[diff] [blame]15#ifdef CONFIG_PCI_ATS
Joerg Roedel5cdede22011-04-04 15:55:18 +0200[diff] [blame]16
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600[diff] [blame]17int pci_enable_ats(struct pci_dev *dev, int ps);
18void pci_disable_ats(struct pci_dev *dev);
19int pci_ats_queue_depth(struct pci_dev *dev);
Joerg Roedelc320b972011-09-27 15:57:15 +0200[diff] [blame]20
Joerg Roedel5cdede22011-04-04 15:55:18 +0200[diff] [blame]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 */
27static inline int pci_ats_enabled(struct pci_dev *dev)
28{
29 return dev->ats && dev->ats->is_enabled;
30}
31
Joerg Roedel466b3dd2011-10-30 16:35:08 +0100[diff] [blame]32#else /* CONFIG_PCI_ATS */
Joerg Roedel5cdede22011-04-04 15:55:18 +0200[diff] [blame]33
34static inline int pci_enable_ats(struct pci_dev *dev, int ps)
35{
36 return -ENODEV;
37}
38
39static inline void pci_disable_ats(struct pci_dev *dev)
40{
41}
42
43static inline int pci_ats_queue_depth(struct pci_dev *dev)
44{
45 return -ENODEV;
46}
47
48static inline int pci_ats_enabled(struct pci_dev *dev)
49{
50 return 0;
51}
52
Joerg Roedel466b3dd2011-10-30 16:35:08 +0100[diff] [blame]53#endif /* CONFIG_PCI_ATS */
Joerg Roedel5cdede22011-04-04 15:55:18 +0200[diff] [blame]54
Joerg Roedelc320b972011-09-27 15:57:15 +0200[diff] [blame]55#ifdef CONFIG_PCI_PRI
56
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600[diff] [blame]57int pci_enable_pri(struct pci_dev *pdev, u32 reqs);
58void pci_disable_pri(struct pci_dev *pdev);
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600[diff] [blame]59int pci_reset_pri(struct pci_dev *pdev);
Joerg Roedelc320b972011-09-27 15:57:15 +0200[diff] [blame]60
61#else /* CONFIG_PCI_PRI */
62
63static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs)
64{
65 return -ENODEV;
66}
67
68static inline void pci_disable_pri(struct pci_dev *pdev)
69{
70}
71
Joerg Roedelc320b972011-09-27 15:57:15 +0200[diff] [blame]72static inline int pci_reset_pri(struct pci_dev *pdev)
73{
74 return -ENODEV;
75}
76
Joerg Roedelc320b972011-09-27 15:57:15 +0200[diff] [blame]77#endif /* CONFIG_PCI_PRI */
78
Joerg Roedel086ac112011-09-27 15:57:16 +0200[diff] [blame]79#ifdef CONFIG_PCI_PASID
80
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600[diff] [blame]81int pci_enable_pasid(struct pci_dev *pdev, int features);
82void pci_disable_pasid(struct pci_dev *pdev);
83int pci_pasid_features(struct pci_dev *pdev);
84int pci_max_pasids(struct pci_dev *pdev);
Joerg Roedel086ac112011-09-27 15:57:16 +0200[diff] [blame]85
86#else /* CONFIG_PCI_PASID */
87
88static inline int pci_enable_pasid(struct pci_dev *pdev, int features)
89{
90 return -EINVAL;
91}
92
93static inline void pci_disable_pasid(struct pci_dev *pdev)
94{
95}
96
97static inline int pci_pasid_features(struct pci_dev *pdev)
98{
99 return -EINVAL;
100}
101
102static inline int pci_max_pasids(struct pci_dev *pdev)
103{
104 return -EINVAL;
105}
106
107#endif /* CONFIG_PCI_PASID */
108
109
Joerg Roedel5cdede22011-04-04 15:55:18 +0200[diff] [blame]110#endif /* LINUX_PCI_ATS_H*/