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Diffstat (limited to 'arch/x86/include/asm/msidef.h')
-rw-r--r--arch/x86/include/asm/msidef.h55
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/x86/include/asm/msidef.h b/arch/x86/include/asm/msidef.h
new file mode 100644
index 000000000000..ed9190246876
--- /dev/null
+++ b/arch/x86/include/asm/msidef.h
@@ -0,0 +1,55 @@
+#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 */