| Alex Nixon | b5401a9 | 2010-03-18 16:31:34 -0400 | [diff] [blame] | 1 | #ifndef _ASM_X86_XEN_PCI_H |
| 2 | #define _ASM_X86_XEN_PCI_H |
| 3 | |
| 4 | #if defined(CONFIG_PCI_XEN) |
| 5 | extern int __init pci_xen_init(void); |
| Stefano Stabellini | 3942b74 | 2010-06-24 17:50:18 +0100 | [diff] [blame] | 6 | extern int __init pci_xen_hvm_init(void); |
| Alex Nixon | b5401a9 | 2010-03-18 16:31:34 -0400 | [diff] [blame] | 7 | #define pci_xen 1 |
| 8 | #else |
| 9 | #define pci_xen 0 |
| 10 | #define pci_xen_init (0) |
| Stefano Stabellini | 3942b74 | 2010-06-24 17:50:18 +0100 | [diff] [blame] | 11 | static inline int pci_xen_hvm_init(void) |
| 12 | { |
| 13 | return -1; |
| 14 | } |
| Alex Nixon | b5401a9 | 2010-03-18 16:31:34 -0400 | [diff] [blame] | 15 | #endif |
| Jeremy Fitzhardinge | 38aa66f | 2010-09-02 14:51:39 +0100 | [diff] [blame] | 16 | #if defined(CONFIG_XEN_DOM0) |
| Konrad Rzeszutek Wilk | a0ee056 | 2011-06-09 09:49:13 -0400 | [diff] [blame] | 17 | int __init pci_xen_initial_domain(void); |
| Konrad Rzeszutek Wilk | c55fa78 | 2010-11-08 14:13:35 -0500 | [diff] [blame] | 18 | int xen_find_device_domain_owner(struct pci_dev *dev); |
| 19 | int xen_register_device_domain_owner(struct pci_dev *dev, uint16_t domain); |
| 20 | int xen_unregister_device_domain_owner(struct pci_dev *dev); |
| Jeremy Fitzhardinge | 38aa66f | 2010-09-02 14:51:39 +0100 | [diff] [blame] | 21 | #else |
| Konrad Rzeszutek Wilk | a0ee056 | 2011-06-09 09:49:13 -0400 | [diff] [blame] | 22 | static inline int __init pci_xen_initial_domain(void) |
| Jeremy Fitzhardinge | 38aa66f | 2010-09-02 14:51:39 +0100 | [diff] [blame] | 23 | { |
| Konrad Rzeszutek Wilk | a0ee056 | 2011-06-09 09:49:13 -0400 | [diff] [blame] | 24 | return -1; |
| Jeremy Fitzhardinge | 38aa66f | 2010-09-02 14:51:39 +0100 | [diff] [blame] | 25 | } |
| Konrad Rzeszutek Wilk | c55fa78 | 2010-11-08 14:13:35 -0500 | [diff] [blame] | 26 | static inline int xen_find_device_domain_owner(struct pci_dev *dev) |
| 27 | { |
| 28 | return -1; |
| 29 | } |
| 30 | static inline int xen_register_device_domain_owner(struct pci_dev *dev, |
| 31 | uint16_t domain) |
| 32 | { |
| 33 | return -1; |
| 34 | } |
| 35 | static inline int xen_unregister_device_domain_owner(struct pci_dev *dev) |
| 36 | { |
| 37 | return -1; |
| 38 | } |
| Jeremy Fitzhardinge | 38aa66f | 2010-09-02 14:51:39 +0100 | [diff] [blame] | 39 | #endif |
| Alex Nixon | b5401a9 | 2010-03-18 16:31:34 -0400 | [diff] [blame] | 40 | |
| 41 | #if defined(CONFIG_PCI_MSI) |
| 42 | #if defined(CONFIG_PCI_XEN) |
| 43 | /* The drivers/pci/xen-pcifront.c sets this structure to |
| 44 | * its own functions. |
| 45 | */ |
| 46 | struct xen_pci_frontend_ops { |
| Konrad Rzeszutek Wilk | cc0f89c | 2011-02-17 12:02:23 -0500 | [diff] [blame] | 47 | int (*enable_msi)(struct pci_dev *dev, int vectors[]); |
| Alex Nixon | b5401a9 | 2010-03-18 16:31:34 -0400 | [diff] [blame] | 48 | void (*disable_msi)(struct pci_dev *dev); |
| Konrad Rzeszutek Wilk | cc0f89c | 2011-02-17 12:02:23 -0500 | [diff] [blame] | 49 | int (*enable_msix)(struct pci_dev *dev, int vectors[], int nvec); |
| Alex Nixon | b5401a9 | 2010-03-18 16:31:34 -0400 | [diff] [blame] | 50 | void (*disable_msix)(struct pci_dev *dev); |
| 51 | }; |
| 52 | |
| 53 | extern struct xen_pci_frontend_ops *xen_pci_frontend; |
| 54 | |
| 55 | static inline int xen_pci_frontend_enable_msi(struct pci_dev *dev, |
| Konrad Rzeszutek Wilk | cc0f89c | 2011-02-17 12:02:23 -0500 | [diff] [blame] | 56 | int vectors[]) |
| Alex Nixon | b5401a9 | 2010-03-18 16:31:34 -0400 | [diff] [blame] | 57 | { |
| 58 | if (xen_pci_frontend && xen_pci_frontend->enable_msi) |
| 59 | return xen_pci_frontend->enable_msi(dev, vectors); |
| 60 | return -ENODEV; |
| 61 | } |
| 62 | static inline void xen_pci_frontend_disable_msi(struct pci_dev *dev) |
| 63 | { |
| 64 | if (xen_pci_frontend && xen_pci_frontend->disable_msi) |
| 65 | xen_pci_frontend->disable_msi(dev); |
| 66 | } |
| 67 | static inline int xen_pci_frontend_enable_msix(struct pci_dev *dev, |
| Konrad Rzeszutek Wilk | cc0f89c | 2011-02-17 12:02:23 -0500 | [diff] [blame] | 68 | int vectors[], int nvec) |
| Alex Nixon | b5401a9 | 2010-03-18 16:31:34 -0400 | [diff] [blame] | 69 | { |
| 70 | if (xen_pci_frontend && xen_pci_frontend->enable_msix) |
| 71 | return xen_pci_frontend->enable_msix(dev, vectors, nvec); |
| 72 | return -ENODEV; |
| 73 | } |
| 74 | static inline void xen_pci_frontend_disable_msix(struct pci_dev *dev) |
| 75 | { |
| 76 | if (xen_pci_frontend && xen_pci_frontend->disable_msix) |
| 77 | xen_pci_frontend->disable_msix(dev); |
| 78 | } |
| 79 | #endif /* CONFIG_PCI_XEN */ |
| 80 | #endif /* CONFIG_PCI_MSI */ |
| 81 | |
| 82 | #endif /* _ASM_X86_XEN_PCI_H */ |