drivers/pci/msi.h

   1 /*
   2  * Copyright (C) 2003-2004 Intel
   3  * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
   4  */
   5
   6 #ifndef MSI_H
   7 #define MSI_H
   8
   9 #define PCI_MSIX_ENTRY_SIZE                     16
  10 #define  PCI_MSIX_ENTRY_LOWER_ADDR_OFFSET       0
  11 #define  PCI_MSIX_ENTRY_UPPER_ADDR_OFFSET       4
  12 #define  PCI_MSIX_ENTRY_DATA_OFFSET             8
  13 #define  PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET      12
  14
  15 #define msi_control_reg(base)           (base + PCI_MSI_FLAGS)
  16 #define msi_lower_address_reg(base)     (base + PCI_MSI_ADDRESS_LO)
  17 #define msi_upper_address_reg(base)     (base + PCI_MSI_ADDRESS_HI)
  18 #define msi_data_reg(base, is64bit)     \
  19         ( (is64bit == 1) ? base+PCI_MSI_DATA_64 : base+PCI_MSI_DATA_32 )
  20 #define msi_mask_bits_reg(base, is64bit) \
  21         ( (is64bit == 1) ? base+PCI_MSI_MASK_BIT : base+PCI_MSI_MASK_BIT-4)
  22 #define msi_disable(control)            control &= ~PCI_MSI_FLAGS_ENABLE
  23 #define multi_msi_capable(control) \
  24         (1 << ((control & PCI_MSI_FLAGS_QMASK) >> 1))
  25 #define multi_msi_enable(control, num) \
  26         control |= (((num >> 1) << 4) & PCI_MSI_FLAGS_QSIZE);
  27 #define is_64bit_address(control)       (!!(control & PCI_MSI_FLAGS_64BIT))
  28 #define is_mask_bit_support(control)    (!!(control & PCI_MSI_FLAGS_MASKBIT))
  29 #define msi_enable(control, num) multi_msi_enable(control, num); \
  30         control |= PCI_MSI_FLAGS_ENABLE
  31
  32 #define msix_table_offset_reg(base)     (base + 0x04)
  33 #define msix_pba_offset_reg(base)       (base + 0x08)
  34 #define msix_enable(control)            control |= PCI_MSIX_FLAGS_ENABLE
  35 #define msix_disable(control)           control &= ~PCI_MSIX_FLAGS_ENABLE
  36 #define msix_table_size(control)        ((control & PCI_MSIX_FLAGS_QSIZE)+1)
  37 #define multi_msix_capable              msix_table_size
  38 #define msix_unmask(address)            (address & ~PCI_MSIX_FLAGS_BITMASK)
  39 #define msix_mask(address)              (address | PCI_MSIX_FLAGS_BITMASK)
  40 #define msix_is_pending(address)        (address & PCI_MSIX_FLAGS_PENDMASK)
  41
  42 #endif /* MSI_H */