summaryrefslogtreecommitdiffstats
path: root/include/asm-m68k/amigaints.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-m68k/amigaints.h')
-rw-r--r--include/asm-m68k/amigaints.h133
1 files changed, 133 insertions, 0 deletions
diff --git a/include/asm-m68k/amigaints.h b/include/asm-m68k/amigaints.h
new file mode 100644
index 0000000..2aff4cf
--- /dev/null
+++ b/include/asm-m68k/amigaints.h
@@ -0,0 +1,133 @@
+/*
+** 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_
+
+/*
+** 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 */
+
+/* vertical blanking interrupt */
+#define IRQ_AMIGA_VERTB 0
+
+/* copper interrupt */
+#define IRQ_AMIGA_COPPER 1
+
+/* Audio interrupts */
+#define IRQ_AMIGA_AUD0 2
+#define IRQ_AMIGA_AUD1 3
+#define IRQ_AMIGA_AUD2 4
+#define IRQ_AMIGA_AUD3 5
+
+/* Blitter done interrupt */
+#define IRQ_AMIGA_BLIT 6
+
+/* floppy disk interrupts */
+#define IRQ_AMIGA_DSKSYN 7
+#define IRQ_AMIGA_DSKBLK 8
+
+/* builtin serial port interrupts */
+#define IRQ_AMIGA_RBF 9
+#define IRQ_AMIGA_TBE 10
+
+/* software interrupts */
+#define IRQ_AMIGA_SOFT 11
+
+/* interrupts from external hardware */
+#define IRQ_AMIGA_PORTS 12
+#define IRQ_AMIGA_EXTER 13
+
+/* CIA interrupt sources */
+#define IRQ_AMIGA_CIAA 14
+#define IRQ_AMIGA_CIAA_TA 14
+#define IRQ_AMIGA_CIAA_TB 15
+#define IRQ_AMIGA_CIAA_ALRM 16
+#define IRQ_AMIGA_CIAA_SP 17
+#define IRQ_AMIGA_CIAA_FLG 18
+#define IRQ_AMIGA_CIAB 19
+#define IRQ_AMIGA_CIAB_TA 19
+#define IRQ_AMIGA_CIAB_TB 20
+#define IRQ_AMIGA_CIAB_ALRM 21
+#define IRQ_AMIGA_CIAB_SP 22
+#define IRQ_AMIGA_CIAB_FLG 23
+
+/* auto-vector interrupts */
+#define IRQ_AMIGA_AUTO 24
+#define IRQ_AMIGA_AUTO_0 24 /* This is just a dummy */
+#define IRQ_AMIGA_AUTO_1 25
+#define IRQ_AMIGA_AUTO_2 26
+#define IRQ_AMIGA_AUTO_3 27
+#define IRQ_AMIGA_AUTO_4 28
+#define IRQ_AMIGA_AUTO_5 29
+#define IRQ_AMIGA_AUTO_6 30
+#define IRQ_AMIGA_AUTO_7 31
+
+#define IRQ_FLOPPY IRQ_AMIGA_DSKBLK
+
+/* INTREQR masks */
+#define IRQ1_MASK 0x0007 /* INTREQR mask for IRQ 1 */
+#define IRQ2_MASK 0x0008 /* INTREQR mask for IRQ 2 */
+#define IRQ3_MASK 0x0070 /* INTREQR mask for IRQ 3 */
+#define IRQ4_MASK 0x0780 /* INTREQR mask for IRQ 4 */
+#define IRQ5_MASK 0x1800 /* INTREQR mask for IRQ 5 */
+#define IRQ6_MASK 0x2000 /* INTREQR mask for IRQ 6 */
+#define IRQ7_MASK 0x4000 /* INTREQR mask for IRQ 7 */
+
+#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 */
+
+extern void amiga_do_irq(int irq, struct pt_regs *fp);
+extern void amiga_do_irq_list(int irq, struct pt_regs *fp);
+
+extern unsigned short amiga_intena_vals[];
+
+/* 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
+
+/* 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 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 */
OpenPOWER on IntegriCloud