aboutsummaryrefslogblamecommitdiffstats
path: root/arch/x86/include/asm/msidef.h
blob: ed91902468769a9efd074b20d529b47d046a25b6 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11
12
13

                         










                                                  

                                                                           
























                                                                           



                                                                         


                                                 

                                                                               
 



                                                                
                              
#ifndef ASM_X86__MSIDEF_H
#define ASM_X86__MSIDEF_H

/*
 * Constants for Intel APIC based MSI messages.
 */

/*
 * Shifts for MSI data
 */

#define MSI_DATA_VECTOR_SHIFT		0
#define  MSI_DATA_VECTOR_MASK		0x000000ff
#define	 MSI_DATA_VECTOR(v)		(((v) << MSI_DATA_VECTOR_SHIFT) & \
					 MSI_DATA_VECTOR_MASK)

#define MSI_DATA_DELIVERY_MODE_SHIFT	8
#define  MSI_DATA_DELIVERY_FIXED	(0 << MSI_DATA_DELIVERY_MODE_SHIFT)
#define  MSI_DATA_DELIVERY_LOWPRI	(1 << MSI_DATA_DELIVERY_MODE_SHIFT)

#define MSI_DATA_LEVEL_SHIFT		14
#define	 MSI_DATA_LEVEL_DEASSERT	(0 << MSI_DATA_LEVEL_SHIFT)
#define	 MSI_DATA_LEVEL_ASSERT		(1 << MSI_DATA_LEVEL_SHIFT)

#define MSI_DATA_TRIGGER_SHIFT		15
#define  MSI_DATA_TRIGGER_EDGE		(0 << MSI_DATA_TRIGGER_SHIFT)
#define  MSI_DATA_TRIGGER_LEVEL		(1 << MSI_DATA_TRIGGER_SHIFT)

/*
 * Shift/mask fields for msi address
 */

#define MSI_ADDR_BASE_HI		0
#define MSI_ADDR_BASE_LO		0xfee00000

#define MSI_ADDR_DEST_MODE_SHIFT	2
#define  MSI_ADDR_DEST_MODE_PHYSICAL	(0 << MSI_ADDR_DEST_MODE_SHIFT)
#define	 MSI_ADDR_DEST_MODE_LOGICAL	(1 << MSI_ADDR_DEST_MODE_SHIFT)

#define MSI_ADDR_REDIRECTION_SHIFT	3
#define  MSI_ADDR_REDIRECTION_CPU	(0 << MSI_ADDR_REDIRECTION_SHIFT)
					/* dedicated cpu */
#define  MSI_ADDR_REDIRECTION_LOWPRI	(1 << MSI_ADDR_REDIRECTION_SHIFT)
					/* lowest priority */

#define MSI_ADDR_DEST_ID_SHIFT		12
#define	 MSI_ADDR_DEST_ID_MASK		0x00ffff0
#define  MSI_ADDR_DEST_ID(dest)		(((dest) << MSI_ADDR_DEST_ID_SHIFT) & \
					 MSI_ADDR_DEST_ID_MASK)

#define MSI_ADDR_IR_EXT_INT		(1 << 4)
#define MSI_ADDR_IR_SHV			(1 << 3)
#define MSI_ADDR_IR_INDEX1(index)	((index & 0x8000) >> 13)
#define MSI_ADDR_IR_INDEX2(index)	((index & 0x7fff) << 5)
#endif /* ASM_X86__MSIDEF_H */