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msidef.h
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1 #ifndef _ASM_X86_MSIDEF_H
2 #define _ASM_X86_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) & \
15  MSI_DATA_VECTOR_MASK)
16 
17 #define MSI_DATA_DELIVERY_MODE_SHIFT 8
18 #define MSI_DATA_DELIVERY_FIXED (0 << MSI_DATA_DELIVERY_MODE_SHIFT)
19 #define MSI_DATA_DELIVERY_LOWPRI (1 << MSI_DATA_DELIVERY_MODE_SHIFT)
20 
21 #define MSI_DATA_LEVEL_SHIFT 14
22 #define MSI_DATA_LEVEL_DEASSERT (0 << MSI_DATA_LEVEL_SHIFT)
23 #define MSI_DATA_LEVEL_ASSERT (1 << MSI_DATA_LEVEL_SHIFT)
24 
25 #define MSI_DATA_TRIGGER_SHIFT 15
26 #define MSI_DATA_TRIGGER_EDGE (0 << MSI_DATA_TRIGGER_SHIFT)
27 #define MSI_DATA_TRIGGER_LEVEL (1 << MSI_DATA_TRIGGER_SHIFT)
28 
29 /*
30  * Shift/mask fields for msi address
31  */
32 
33 #define MSI_ADDR_BASE_HI 0
34 #define MSI_ADDR_BASE_LO 0xfee00000
35 
36 #define MSI_ADDR_DEST_MODE_SHIFT 2
37 #define MSI_ADDR_DEST_MODE_PHYSICAL (0 << MSI_ADDR_DEST_MODE_SHIFT)
38 #define MSI_ADDR_DEST_MODE_LOGICAL (1 << MSI_ADDR_DEST_MODE_SHIFT)
39 
40 #define MSI_ADDR_REDIRECTION_SHIFT 3
41 #define MSI_ADDR_REDIRECTION_CPU (0 << MSI_ADDR_REDIRECTION_SHIFT)
42  /* dedicated cpu */
43 #define MSI_ADDR_REDIRECTION_LOWPRI (1 << MSI_ADDR_REDIRECTION_SHIFT)
44  /* lowest priority */
45 
46 #define MSI_ADDR_DEST_ID_SHIFT 12
47 #define MSI_ADDR_DEST_ID_MASK 0x00ffff0
48 #define MSI_ADDR_DEST_ID(dest) (((dest) << MSI_ADDR_DEST_ID_SHIFT) & \
49  MSI_ADDR_DEST_ID_MASK)
50 #define MSI_ADDR_EXT_DEST_ID(dest) ((dest) & 0xffffff00)
51 
52 #define MSI_ADDR_IR_EXT_INT (1 << 4)
53 #define MSI_ADDR_IR_SHV (1 << 3)
54 #define MSI_ADDR_IR_INDEX1(index) ((index & 0x8000) >> 13)
55 #define MSI_ADDR_IR_INDEX2(index) ((index & 0x7fff) << 5)
56 #endif /* _ASM_X86_MSIDEF_H */