x86: Add ioapic.h header

Add definitions for the I/O Advanced Peripheral Interrupt Controller.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/x86/include/asm/ioapic.h

@@ -0,0 +1,38 @@
+/*
+ * From coreboot file of the same name
+ *
+ * Copyright (C) 2010 coresystems GmbH
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#ifndef __ASM_IOAPIC_H
+#define __ASM_IOAPIC_H
+
+#define IO_APIC_ADDR		0xfec00000
+#define IO_APIC_INDEX		IO_APIC_ADDR
+#define IO_APIC_DATA		(IO_APIC_ADDR + 0x10)
+#define IO_APIC_INTERRUPTS	24
+
+#define ALL		(0xff << 24)
+#define NONE		0
+#define DISABLED	(1 << 16)
+#define ENABLED		(0 << 16)
+#define TRIGGER_EDGE	(0 << 15)
+#define TRIGGER_LEVEL	(1 << 15)
+#define POLARITY_HIGH	(0 << 13)
+#define POLARITY_LOW	(1 << 13)
+#define PHYSICAL_DEST	(0 << 11)
+#define LOGICAL_DEST	(1 << 11)
+#define ExtINT		(7 << 8)
+#define NMI		(4 << 8)
+#define SMI		(2 << 8)
+#define INT		(1 << 8)
+
+u32 io_apic_read(u32 ioapic_base, u32 reg);
+void io_apic_write(u32 ioapic_base, u32 reg, u32 value);
+void set_ioapic_id(u32 ioapic_base, u8 ioapic_id);
+void setup_ioapic(u32 ioapic_base, u8 ioapic_id);
+void clear_ioapic(u32 ioapic_base);
+
+#endif