| Joerg Roedel | 5cdede2 | 2011-04-04 15:55:18 +0200 | [diff] [blame] | 1 | #ifndef LINUX_PCI_ATS_H |
| 2 | #define LINUX_PCI_ATS_H |
| 3 | |
| Joerg Roedel | db3c33c | 2011-09-27 15:57:13 +0200 | [diff] [blame] | 4 | #include <linux/pci.h> |
| 5 | |
| Joerg Roedel | 5cdede2 | 2011-04-04 15:55:18 +0200 | [diff] [blame] | 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); |
| Joerg Roedel | c320b97 | 2011-09-27 15:57:15 +0200 | [diff] [blame^] | 20 | |
| Joerg Roedel | 5cdede2 | 2011-04-04 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 | */ |
| 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 | |
| Joerg Roedel | c320b97 | 2011-09-27 15:57:15 +0200 | [diff] [blame^] | 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 | |
| Joerg Roedel | 5cdede2 | 2011-04-04 15:55:18 +0200 | [diff] [blame] | 96 | #endif /* LINUX_PCI_ATS_H*/ |