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authorEric W. Biederman <ebiederm@xmission.com>2006-10-04 05:16:43 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 10:55:28 -0400
commit2d3fcc1c54df2f49674e1f7c99d4800ed1d51902 (patch)
tree7cf478bc419f8f0c17be929b5ffdac6fc4236b70 /include
parent589e367f9b9117b3412da0d4e10ea6882db8da84 (diff)
[PATCH] genirq: i386 irq: Move msi message composition into io_apic.c
This removes the hardcoded assumption that irq == vector in the msi composition code, and it allows the msi message composition to setup logical mode, or lowest priorirty delivery mode as we do for other apic interrupts, and with the same selection criteria. Basically this moves the problem of what is in the msi message into the architecture irq management code where it belongs. Not in a generic layer that doesn't have enough information to compose msi messages properly. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rajesh Shah <rajesh.shah@intel.com> Cc: Andi Kleen <ak@muc.de> Cc: "Protasevich, Natalie" <Natalie.Protasevich@UNISYS.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/asm-i386/msi.h7
-rw-r--r--include/asm-i386/msidef.h47
2 files changed, 49 insertions, 5 deletions
diff --git a/include/asm-i386/msi.h b/include/asm-i386/msi.h
index b11c4b7dfaef..7368a89a0f42 100644
--- a/include/asm-i386/msi.h
+++ b/include/asm-i386/msi.h
@@ -9,14 +9,11 @@
9#include <asm/desc.h> 9#include <asm/desc.h>
10#include <mach_apic.h> 10#include <mach_apic.h>
11 11
12#define LAST_DEVICE_VECTOR (FIRST_SYSTEM_VECTOR - 1) 12extern struct msi_ops arch_msi_ops;
13#define MSI_TARGET_CPU_SHIFT 12
14
15extern struct msi_ops msi_apic_ops;
16 13
17static inline int msi_arch_init(void) 14static inline int msi_arch_init(void)
18{ 15{
19 msi_register(&msi_apic_ops); 16 msi_register(&arch_msi_ops);
20 return 0; 17 return 0;
21} 18}
22 19
diff --git a/include/asm-i386/msidef.h b/include/asm-i386/msidef.h
new file mode 100644
index 000000000000..5b8acddb70fb
--- /dev/null
+++ b/include/asm-i386/msidef.h
@@ -0,0 +1,47 @@
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 */