arch/x86/include/asm/msidef.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_MSIDEF_H
   3 #define _ASM_X86_MSIDEF_H
   4
   5 /*
   6  * Constants for Intel APIC based MSI messages.
   7  */
   8
   9 /*
  10  * Shifts for MSI data
  11  */
  12
  13 #define MSI_DATA_VECTOR_SHIFT           0
  14 #define  MSI_DATA_VECTOR_MASK           0x000000ff
  15 #define  MSI_DATA_VECTOR(v)             (((v) << MSI_DATA_VECTOR_SHIFT) & \
  16                                          MSI_DATA_VECTOR_MASK)
  17
  18 #define MSI_DATA_DELIVERY_MODE_SHIFT    8
  19 #define  MSI_DATA_DELIVERY_FIXED        (0 << MSI_DATA_DELIVERY_MODE_SHIFT)
  20 #define  MSI_DATA_DELIVERY_LOWPRI       (1 << MSI_DATA_DELIVERY_MODE_SHIFT)
  21
  22 #define MSI_DATA_LEVEL_SHIFT            14
  23 #define  MSI_DATA_LEVEL_DEASSERT        (0 << MSI_DATA_LEVEL_SHIFT)
  24 #define  MSI_DATA_LEVEL_ASSERT          (1 << MSI_DATA_LEVEL_SHIFT)
  25
  26 #define MSI_DATA_TRIGGER_SHIFT          15
  27 #define  MSI_DATA_TRIGGER_EDGE          (0 << MSI_DATA_TRIGGER_SHIFT)
  28 #define  MSI_DATA_TRIGGER_LEVEL         (1 << MSI_DATA_TRIGGER_SHIFT)
  29
  30 /*
  31  * Shift/mask fields for msi address
  32  */
  33
  34 #define MSI_ADDR_BASE_HI                0
  35 #define MSI_ADDR_BASE_LO                0xfee00000
  36
  37 #define MSI_ADDR_DEST_MODE_SHIFT        2
  38 #define  MSI_ADDR_DEST_MODE_PHYSICAL    (0 << MSI_ADDR_DEST_MODE_SHIFT)
  39 #define  MSI_ADDR_DEST_MODE_LOGICAL     (1 << MSI_ADDR_DEST_MODE_SHIFT)
  40
  41 #define MSI_ADDR_REDIRECTION_SHIFT      3
  42 #define  MSI_ADDR_REDIRECTION_CPU       (0 << MSI_ADDR_REDIRECTION_SHIFT)
  43                                         /* dedicated cpu */
  44 #define  MSI_ADDR_REDIRECTION_LOWPRI    (1 << MSI_ADDR_REDIRECTION_SHIFT)
  45                                         /* lowest priority */
  46
  47 #define MSI_ADDR_DEST_ID_SHIFT          12
  48 #define  MSI_ADDR_DEST_ID_MASK          0x00ffff0
  49 #define  MSI_ADDR_DEST_ID(dest)         (((dest) << MSI_ADDR_DEST_ID_SHIFT) & \
  50                                          MSI_ADDR_DEST_ID_MASK)
  51 #define MSI_ADDR_EXT_DEST_ID(dest)      ((dest) & 0xffffff00)
  52
  53 #define MSI_ADDR_IR_EXT_INT             (1 << 4)
  54 #define MSI_ADDR_IR_SHV                 (1 << 3)
  55 #define MSI_ADDR_IR_INDEX1(index)       ((index & 0x8000) >> 13)
  56 #define MSI_ADDR_IR_INDEX2(index)       ((index & 0x7fff) << 5)
  57 #endif /* _ASM_X86_MSIDEF_H */