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linux-vybrid_pu...
/
drivers
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pci
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msi.h

msi.h 1.9 KB
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  1. /*
    2. 

  2.  * Copyright (C) 2003-2004 Intel
    3. 

  3.  * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
    4. 

  4.  */
    5. 

  5. 

  6. #ifndef MSI_H
    7. 

  7. #define MSI_H
    8. 

  8. 

  9. /*
    10. 

  10.  * MSI-X Address Register
    11. 

  11.  */
    12. 

  12. #define PCI_MSIX_FLAGS_QSIZE		0x7FF
    13. 

  13. #define PCI_MSIX_FLAGS_ENABLE		(1 << 15)
    14. 

  14. #define PCI_MSIX_FLAGS_BIRMASK		(7 << 0)
    15. 

  15. #define PCI_MSIX_FLAGS_BITMASK		(1 << 0)
    16. 

  16. 

  17. #define PCI_MSIX_ENTRY_SIZE			16
    18. 

  18. #define  PCI_MSIX_ENTRY_LOWER_ADDR_OFFSET	0
    19. 

  19. #define  PCI_MSIX_ENTRY_UPPER_ADDR_OFFSET	4
    20. 

  20. #define  PCI_MSIX_ENTRY_DATA_OFFSET		8
    21. 

  21. #define  PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET	12
    22. 

  22. 

  23. #define msi_control_reg(base)		(base + PCI_MSI_FLAGS)
    24. 

  24. #define msi_lower_address_reg(base)	(base + PCI_MSI_ADDRESS_LO)
    25. 

  25. #define msi_upper_address_reg(base)	(base + PCI_MSI_ADDRESS_HI)
    26. 

  26. #define msi_data_reg(base, is64bit)	\
    27. 

  27. 	( (is64bit == 1) ? base+PCI_MSI_DATA_64 : base+PCI_MSI_DATA_32 )
    28. 

  28. #define msi_mask_bits_reg(base, is64bit) \
    29. 

  29. 	( (is64bit == 1) ? base+PCI_MSI_MASK_BIT : base+PCI_MSI_MASK_BIT-4)
    30. 

  30. #define msi_disable(control)		control &= ~PCI_MSI_FLAGS_ENABLE
    31. 

  31. #define multi_msi_capable(control) \
    32. 

  32. 	(1 << ((control & PCI_MSI_FLAGS_QMASK) >> 1))
    33. 

  33. #define multi_msi_enable(control, num) \
    34. 

  34. 	control |= (((num >> 1) << 4) & PCI_MSI_FLAGS_QSIZE);
    35. 

  35. #define is_64bit_address(control)	(!!(control & PCI_MSI_FLAGS_64BIT))
    36. 

  36. #define is_mask_bit_support(control)	(!!(control & PCI_MSI_FLAGS_MASKBIT))
    37. 

  37. #define msi_enable(control, num) multi_msi_enable(control, num); \
    38. 

  38. 	control |= PCI_MSI_FLAGS_ENABLE
    39. 

  39. 

  40. #define msix_table_offset_reg(base)	(base + 0x04)
    41. 

  41. #define msix_pba_offset_reg(base)	(base + 0x08)
    42. 

  42. #define msix_enable(control)	 	control |= PCI_MSIX_FLAGS_ENABLE
    43. 

  43. #define msix_disable(control)	 	control &= ~PCI_MSIX_FLAGS_ENABLE
    44. 

  44. #define msix_table_size(control) 	((control & PCI_MSIX_FLAGS_QSIZE)+1)
    45. 

  45. #define multi_msix_capable		msix_table_size
    46. 

  46. #define msix_unmask(address)	 	(address & ~PCI_MSIX_FLAGS_BITMASK)
    47. 

  47. #define msix_mask(address)		(address | PCI_MSIX_FLAGS_BITMASK)
    48. 

  48. #define msix_is_pending(address) 	(address & PCI_MSIX_FLAGS_PENDMASK)
    49. 

  49. 

  50. #endif /* MSI_H */
    51.