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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 */