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 */
58