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arch
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x86
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asm
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xen
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pci.h

pci.h 2.2 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. extern int __init pci_xen_hvm_init(void);
    7. 

  7. #define pci_xen 1
    8. 

  8. #else
    9. 

  9. #define pci_xen 0
    10. 

  10. #define pci_xen_init (0)
    11. 

  11. static inline int pci_xen_hvm_init(void)
    12. 

  12. {
    13. 

  13. 	return -1;
    14. 

  14. }
    15. 

  15. #endif
    16. 

  16. #if defined(CONFIG_XEN_DOM0)
    17. 

  17. int __init pci_xen_initial_domain(void);
    18. 

  18. int xen_find_device_domain_owner(struct pci_dev *dev);
    19. 

  19. int xen_register_device_domain_owner(struct pci_dev *dev, uint16_t domain);
    20. 

  20. int xen_unregister_device_domain_owner(struct pci_dev *dev);
    21. 

  21. #else
    22. 

  22. static inline int __init pci_xen_initial_domain(void)
    23. 

  23. {
    24. 

  24. 	return -1;
    25. 

  25. }
    26. 

  26. static inline int xen_find_device_domain_owner(struct pci_dev *dev)
    27. 

  27. {
    28. 

  28. 	return -1;
    29. 

  29. }
    30. 

  30. static inline int xen_register_device_domain_owner(struct pci_dev *dev,
    31. 

  31. 						   uint16_t domain)
    32. 

  32. {
    33. 

  33. 	return -1;
    34. 

  34. }
    35. 

  35. static inline int xen_unregister_device_domain_owner(struct pci_dev *dev)
    36. 

  36. {
    37. 

  37. 	return -1;
    38. 

  38. }
    39. 

  39. #endif
    40. 

  40. 

  41. #if defined(CONFIG_PCI_MSI)
    42. 

  42. #if defined(CONFIG_PCI_XEN)
    43. 

  43. /* The drivers/pci/xen-pcifront.c sets this structure to
    44. 

  44.  * its own functions.
    45. 

  45.  */
    46. 

  46. struct xen_pci_frontend_ops {
    47. 

  47. 	int (*enable_msi)(struct pci_dev *dev, int vectors[]);
    48. 

  48. 	void (*disable_msi)(struct pci_dev *dev);
    49. 

  49. 	int (*enable_msix)(struct pci_dev *dev, int vectors[], int nvec);
    50. 

  50. 	void (*disable_msix)(struct pci_dev *dev);
    51. 

  51. };
    52. 

  52. 

  53. extern struct xen_pci_frontend_ops *xen_pci_frontend;
    54. 

  54. 

  55. static inline int xen_pci_frontend_enable_msi(struct pci_dev *dev,
    56. 

  56. 					      int vectors[])
    57. 

  57. {
    58. 

  58. 	if (xen_pci_frontend && xen_pci_frontend->enable_msi)
    59. 

  59. 		return xen_pci_frontend->enable_msi(dev, vectors);
    60. 

  60. 	return -ENODEV;
    61. 

  61. }
    62. 

  62. static inline void xen_pci_frontend_disable_msi(struct pci_dev *dev)
    63. 

  63. {
    64. 

  64. 	if (xen_pci_frontend && xen_pci_frontend->disable_msi)
    65. 

  65. 			xen_pci_frontend->disable_msi(dev);
    66. 

  66. }
    67. 

  67. static inline int xen_pci_frontend_enable_msix(struct pci_dev *dev,
    68. 

  68. 					       int vectors[], int nvec)
    69. 

  69. {
    70. 

  70. 	if (xen_pci_frontend && xen_pci_frontend->enable_msix)
    71. 

  71. 		return xen_pci_frontend->enable_msix(dev, vectors, nvec);
    72. 

  72. 	return -ENODEV;
    73. 

  73. }
    74. 

  74. static inline void xen_pci_frontend_disable_msix(struct pci_dev *dev)
    75. 

  75. {
    76. 

  76. 	if (xen_pci_frontend && xen_pci_frontend->disable_msix)
    77. 

  77. 			xen_pci_frontend->disable_msix(dev);
    78. 

  78. }
    79. 

  79. #endif /* CONFIG_PCI_XEN */
    80. 

  80. #endif /* CONFIG_PCI_MSI */
    81. 

  81. 

  82. #endif	/* _ASM_X86_XEN_PCI_H */
    83. 

  83.