1 #ifndef ASM_MSIDEF_H
2 #define ASM_MSIDEF_H
3
4 /*
5 * Constants for Intel APIC based MSI messages.
6 */
7
8 /*
9 * Shifts for MSI data
10 */
11
12 #define MSI_DATA_VECTOR_SHIFT 0
13 #define MSI_DATA_VECTOR_MASK 0x000000ff
14 #define MSI_DATA_VECTOR(v) (((v) << MSI_DATA_VECTOR_SHIFT) & MSI_DATA_VECTOR_MASK)
15
16 #define MSI_DATA_DELIVERY_MODE_SHIFT 8
17 #define MSI_DATA_DELIVERY_FIXED (0 << MSI_DATA_DELIVERY_MODE_SHIFT)
18 #define MSI_DATA_DELIVERY_LOWPRI (1 << MSI_DATA_DELIVERY_MODE_SHIFT)
19
20 #define MSI_DATA_LEVEL_SHIFT 14
21 #define MSI_DATA_LEVEL_DEASSERT (0 << MSI_DATA_LEVEL_SHIFT)
22 #define MSI_DATA_LEVEL_ASSERT (1 << MSI_DATA_LEVEL_SHIFT)
23
24 #define MSI_DATA_TRIGGER_SHIFT 15
25 #define MSI_DATA_TRIGGER_EDGE (0 << MSI_DATA_TRIGGER_SHIFT)
26 #define MSI_DATA_TRIGGER_LEVEL (1 << MSI_DATA_TRIGGER_SHIFT)
27
28 /*
29 * Shift/mask fields for msi address
30 */
31
32 #define MSI_ADDR_BASE_HI 0
33 #define MSI_ADDR_BASE_LO 0xfee00000
34
35 #define MSI_ADDR_DEST_MODE_SHIFT 2
36 #define MSI_ADDR_DEST_MODE_PHYSICAL (0 << MSI_ADDR_DEST_MODE_SHIFT)
37 #define MSI_ADDR_DEST_MODE_LOGICAL (1 << MSI_ADDR_DEST_MODE_SHIFT)
38
39 #define MSI_ADDR_REDIRECTION_SHIFT 3
40 #define MSI_ADDR_REDIRECTION_CPU (0 << MSI_ADDR_REDIRECTION_SHIFT) /* dedicated cpu */
41 #define MSI_ADDR_REDIRECTION_LOWPRI (1 << MSI_ADDR_REDIRECTION_SHIFT) /* lowest priority */
42
43 #define MSI_ADDR_DEST_ID_SHIFT 12
44 #define MSI_ADDR_DEST_ID_MASK 0x00ffff0
45 #define MSI_ADDR_DEST_ID(dest) (((dest) << MSI_ADDR_DEST_ID_SHIFT) & MSI_ADDR_DEST_ID_MASK)
46
47 #endif /* ASM_MSIDEF_H */
48
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