Import of Linux/MIPS 2.1.14

1 files changed, 123 insertions, 0 deletions

diff --git a/include/asm-m68k/amigaints.h b/include/asm-m68k/amigaints.h
new file mode 100644
index 000000000..0c225ee7c
--- /dev/null
+++ b/include/asm-m68k/amigaints.h
@@ -0,0 +1,123 @@
+/*
+** 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 AMI_IRQS            (24)
+#define AMI_STD_IRQS        (14)
+#define CIA_IRQS            (5)
+
+/* vertical blanking interrupt */
+#define IRQ_AMIGA_VERTB     (IRQ_MACHSPEC | 0)
+
+/* copper interrupt */
+#define IRQ_AMIGA_COPPER    (IRQ_MACHSPEC | 1)
+
+/* Audio interrupts */
+#define IRQ_AMIGA_AUD0	    (IRQ_MACHSPEC | 2)
+#define IRQ_AMIGA_AUD1	    (IRQ_MACHSPEC | 3)
+#define IRQ_AMIGA_AUD2	    (IRQ_MACHSPEC | 4)
+#define IRQ_AMIGA_AUD3	    (IRQ_MACHSPEC | 5)
+
+/* Blitter done interrupt */
+#define IRQ_AMIGA_BLIT	    (IRQ_MACHSPEC | 6)
+
+/* floppy disk interrupts */
+#define IRQ_AMIGA_DSKSYN    (IRQ_MACHSPEC | 7)
+#define IRQ_AMIGA_DSKBLK    (IRQ_MACHSPEC | 8)
+
+/* builtin serial port interrupts */
+#define IRQ_AMIGA_RBF	    (IRQ_MACHSPEC | 9)
+#define IRQ_AMIGA_TBE	    (IRQ_MACHSPEC | 10)
+
+/* software interrupts */
+#define IRQ_AMIGA_SOFT      (IRQ_MACHSPEC | 11)
+
+/* interrupts from external hardware */
+#define IRQ_AMIGA_PORTS	    (IRQ_MACHSPEC | 12)
+#define IRQ_AMIGA_EXTER	    (IRQ_MACHSPEC | 13)
+
+/* CIA interrupt sources */
+#define IRQ_AMIGA_CIAA      (IRQ_MACHSPEC | 14)
+#define IRQ_AMIGA_CIAA_TA   (IRQ_MACHSPEC | 14)
+#define IRQ_AMIGA_CIAA_TB   (IRQ_MACHSPEC | 15)
+#define IRQ_AMIGA_CIAA_ALRM (IRQ_MACHSPEC | 16)
+#define IRQ_AMIGA_CIAA_SP   (IRQ_MACHSPEC | 17)
+#define IRQ_AMIGA_CIAA_FLG  (IRQ_MACHSPEC | 18)
+#define IRQ_AMIGA_CIAB      (IRQ_MACHSPEC | 19)
+#define IRQ_AMIGA_CIAB_TA   (IRQ_MACHSPEC | 19)
+#define IRQ_AMIGA_CIAB_TB   (IRQ_MACHSPEC | 20)
+#define IRQ_AMIGA_CIAB_ALRM (IRQ_MACHSPEC | 21)
+#define IRQ_AMIGA_CIAB_SP   (IRQ_MACHSPEC | 22)
+#define IRQ_AMIGA_CIAB_FLG  (IRQ_MACHSPEC | 23)
+
+#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 */
+
+struct irq_server {
+	unsigned short count, reentrance;
+};
+
+extern void amiga_do_irq(int irq, struct pt_regs *fp);
+extern void amiga_do_irq_list(int irq, struct pt_regs *fp, struct irq_server *server);
+
+/* 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 */