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TOMOYO Linux Cross Reference
Linux/include/linux/pci-ats.h

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  1 #ifndef LINUX_PCI_ATS_H
  2 #define LINUX_PCI_ATS_H
  3 
  4 #include <linux/pci.h>
  5 
  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_ATS
 16 
 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);
 20 
 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_ATS */
 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_ATS */
 54 
 55 #ifdef CONFIG_PCI_PRI
 56 
 57 int pci_enable_pri(struct pci_dev *pdev, u32 reqs);
 58 void pci_disable_pri(struct pci_dev *pdev);
 59 bool pci_pri_enabled(struct pci_dev *pdev);
 60 int pci_reset_pri(struct pci_dev *pdev);
 61 bool pci_pri_stopped(struct pci_dev *pdev);
 62 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 
 96 #ifdef CONFIG_PCI_PASID
 97 
 98 int pci_enable_pasid(struct pci_dev *pdev, int features);
 99 void pci_disable_pasid(struct pci_dev *pdev);
100 int pci_pasid_features(struct pci_dev *pdev);
101 int pci_max_pasids(struct pci_dev *pdev);
102 
103 #else  /* CONFIG_PCI_PASID */
104 
105 static inline int pci_enable_pasid(struct pci_dev *pdev, int features)
106 {
107         return -EINVAL;
108 }
109 
110 static inline void pci_disable_pasid(struct pci_dev *pdev)
111 {
112 }
113 
114 static inline int pci_pasid_features(struct pci_dev *pdev)
115 {
116         return -EINVAL;
117 }
118 
119 static inline int pci_max_pasids(struct pci_dev *pdev)
120 {
121         return -EINVAL;
122 }
123 
124 #endif /* CONFIG_PCI_PASID */
125 
126 
127 #endif /* LINUX_PCI_ATS_H*/
128 

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