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linux-vybrid_pu...
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arch
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x86
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include
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asm
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xen
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pci.h

pci.h 1.5 KB
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  1. #ifndef _ASM_X86_XEN_PCI_H
    2. 

  2. #define _ASM_X86_XEN_PCI_H
    3. 

  3. 

  4. #if defined(CONFIG_PCI_XEN)
    5. 

  5. extern int __init pci_xen_init(void);
    6. 

  6. #define pci_xen 1
    7. 

  7. #else
    8. 

  8. #define pci_xen 0
    9. 

  9. #define pci_xen_init (0)
    10. 

  10. #endif
    11. 

  11. 

  12. #if defined(CONFIG_PCI_MSI)
    13. 

  13. #if defined(CONFIG_PCI_XEN)
    14. 

  14. /* The drivers/pci/xen-pcifront.c sets this structure to
    15. 

  15.  * its own functions.
    16. 

  16.  */
    17. 

  17. struct xen_pci_frontend_ops {
    18. 

  18. 	int (*enable_msi)(struct pci_dev *dev, int **vectors);
    19. 

  19. 	void (*disable_msi)(struct pci_dev *dev);
    20. 

  20. 	int (*enable_msix)(struct pci_dev *dev, int **vectors, int nvec);
    21. 

  21. 	void (*disable_msix)(struct pci_dev *dev);
    22. 

  22. };
    23. 

  23. 

  24. extern struct xen_pci_frontend_ops *xen_pci_frontend;
    25. 

  25. 

  26. static inline int xen_pci_frontend_enable_msi(struct pci_dev *dev,
    27. 

  27. 					      int **vectors)
    28. 

  28. {
    29. 

  29. 	if (xen_pci_frontend && xen_pci_frontend->enable_msi)
    30. 

  30. 		return xen_pci_frontend->enable_msi(dev, vectors);
    31. 

  31. 	return -ENODEV;
    32. 

  32. }
    33. 

  33. static inline void xen_pci_frontend_disable_msi(struct pci_dev *dev)
    34. 

  34. {
    35. 

  35. 	if (xen_pci_frontend && xen_pci_frontend->disable_msi)
    36. 

  36. 			xen_pci_frontend->disable_msi(dev);
    37. 

  37. }
    38. 

  38. static inline int xen_pci_frontend_enable_msix(struct pci_dev *dev,
    39. 

  39. 					       int **vectors, int nvec)
    40. 

  40. {
    41. 

  41. 	if (xen_pci_frontend && xen_pci_frontend->enable_msix)
    42. 

  42. 		return xen_pci_frontend->enable_msix(dev, vectors, nvec);
    43. 

  43. 	return -ENODEV;
    44. 

  44. }
    45. 

  45. static inline void xen_pci_frontend_disable_msix(struct pci_dev *dev)
    46. 

  46. {
    47. 

  47. 	if (xen_pci_frontend && xen_pci_frontend->disable_msix)
    48. 

  48. 			xen_pci_frontend->disable_msix(dev);
    49. 

  49. }
    50. 

  50. #endif /* CONFIG_PCI_XEN */
    51. 

  51. #endif /* CONFIG_PCI_MSI */
    52. 

  52. 

  53. #endif	/* _ASM_X86_XEN_PCI_H */
    54.