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-rw-r--r--kernel/arch/m68k/include/asm/amigaints.h113
1 files changed, 113 insertions, 0 deletions
diff --git a/kernel/arch/m68k/include/asm/amigaints.h b/kernel/arch/m68k/include/asm/amigaints.h
new file mode 100644
index 000000000..b1bcdb835
--- /dev/null
+++ b/kernel/arch/m68k/include/asm/amigaints.h
@@ -0,0 +1,113 @@
+/*
+** amigaints.h -- Amiga Linux interrupt handling structs and prototypes
+**
+** Copyright 1992 by Greg Harp
+**
+** This file is subject to the terms and conditions of the GNU General Public
+** License. See the file COPYING in the main directory of this archive
+** for more details.
+**
+** Created 10/2/92 by Greg Harp
+*/
+
+#ifndef _ASMm68k_AMIGAINTS_H_
+#define _ASMm68k_AMIGAINTS_H_
+
+#include <asm/irq.h>
+
+/*
+** Amiga Interrupt sources.
+**
+*/
+
+#define AUTO_IRQS (8)
+#define AMI_STD_IRQS (14)
+#define CIA_IRQS (5)
+#define AMI_IRQS (32) /* AUTO_IRQS+AMI_STD_IRQS+2*CIA_IRQS */
+
+/* builtin serial port interrupts */
+#define IRQ_AMIGA_TBE (IRQ_USER+0)
+#define IRQ_AMIGA_RBF (IRQ_USER+11)
+
+/* floppy disk interrupts */
+#define IRQ_AMIGA_DSKBLK (IRQ_USER+1)
+#define IRQ_AMIGA_DSKSYN (IRQ_USER+12)
+
+/* software interrupts */
+#define IRQ_AMIGA_SOFT (IRQ_USER+2)
+
+/* interrupts from external hardware */
+#define IRQ_AMIGA_PORTS IRQ_AUTO_2
+#define IRQ_AMIGA_EXTER IRQ_AUTO_6
+
+/* copper interrupt */
+#define IRQ_AMIGA_COPPER (IRQ_USER+4)
+
+/* vertical blanking interrupt */
+#define IRQ_AMIGA_VERTB (IRQ_USER+5)
+
+/* Blitter done interrupt */
+#define IRQ_AMIGA_BLIT (IRQ_USER+6)
+
+/* Audio interrupts */
+#define IRQ_AMIGA_AUD0 (IRQ_USER+7)
+#define IRQ_AMIGA_AUD1 (IRQ_USER+8)
+#define IRQ_AMIGA_AUD2 (IRQ_USER+9)
+#define IRQ_AMIGA_AUD3 (IRQ_USER+10)
+
+/* CIA interrupt sources */
+#define IRQ_AMIGA_CIAA (IRQ_USER+14)
+#define IRQ_AMIGA_CIAA_TA (IRQ_USER+14)
+#define IRQ_AMIGA_CIAA_TB (IRQ_USER+15)
+#define IRQ_AMIGA_CIAA_ALRM (IRQ_USER+16)
+#define IRQ_AMIGA_CIAA_SP (IRQ_USER+17)
+#define IRQ_AMIGA_CIAA_FLG (IRQ_USER+18)
+#define IRQ_AMIGA_CIAB (IRQ_USER+19)
+#define IRQ_AMIGA_CIAB_TA (IRQ_USER+19)
+#define IRQ_AMIGA_CIAB_TB (IRQ_USER+20)
+#define IRQ_AMIGA_CIAB_ALRM (IRQ_USER+21)
+#define IRQ_AMIGA_CIAB_SP (IRQ_USER+22)
+#define IRQ_AMIGA_CIAB_FLG (IRQ_USER+23)
+
+
+/* INTREQR masks */
+#define IF_SETCLR 0x8000 /* set/clr bit */
+#define IF_INTEN 0x4000 /* master interrupt bit in INT* registers */
+#define IF_EXTER 0x2000 /* external level 6 and CIA B interrupt */
+#define IF_DSKSYN 0x1000 /* disk sync interrupt */
+#define IF_RBF 0x0800 /* serial receive buffer full interrupt */
+#define IF_AUD3 0x0400 /* audio channel 3 done interrupt */
+#define IF_AUD2 0x0200 /* audio channel 2 done interrupt */
+#define IF_AUD1 0x0100 /* audio channel 1 done interrupt */
+#define IF_AUD0 0x0080 /* audio channel 0 done interrupt */
+#define IF_BLIT 0x0040 /* blitter done interrupt */
+#define IF_VERTB 0x0020 /* vertical blanking interrupt */
+#define IF_COPER 0x0010 /* copper interrupt */
+#define IF_PORTS 0x0008 /* external level 2 and CIA A interrupt */
+#define IF_SOFT 0x0004 /* software initiated interrupt */
+#define IF_DSKBLK 0x0002 /* diskblock DMA finished */
+#define IF_TBE 0x0001 /* serial transmit buffer empty interrupt */
+
+/* CIA interrupt control register bits */
+
+#define CIA_ICR_TA 0x01
+#define CIA_ICR_TB 0x02
+#define CIA_ICR_ALRM 0x04
+#define CIA_ICR_SP 0x08
+#define CIA_ICR_FLG 0x10
+#define CIA_ICR_ALL 0x1f
+#define CIA_ICR_SETCLR 0x80
+
+extern void amiga_init_IRQ(void);
+
+/* to access the interrupt control registers of CIA's use only
+** these functions, they behave exactly like the amiga os routines
+*/
+
+extern struct ciabase ciaa_base, ciab_base;
+
+extern void cia_init_IRQ(struct ciabase *base);
+extern unsigned char cia_set_irq(struct ciabase *base, unsigned char mask);
+extern unsigned char cia_able_irq(struct ciabase *base, unsigned char mask);
+
+#endif /* asm-m68k/amigaints.h */