patch-2.1.87 linux/include/asm-m68k/macints.h

• Lines: 161
• Date: Thu Feb 12 16:30:13 1998
• Orig file: v2.1.86/linux/include/asm-m68k/macints.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.86/linux/include/asm-m68k/macints.h linux/include/asm-m68k/macints.h
@@ -0,0 +1,160 @@
+/*
+** macints.h -- Macintosh Linux interrupt handling structs and prototypes
+**
+** Copyright 1997 by Michael Schmitz
+**
+** 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.
+**
+*/
+
+#ifndef _ASM_MACINTS_H_
+#define _ASM_MACINTS_H_
+
+#include <asm/irq.h>
+
+/*
+** Macintosh Interrupt sources.
+**
+** Note: these are all routed via the generic VIA interrupt routine!
+**
+*/
+
+#define SRC_VIA1		0
+#define SRC_VIA2		1
+
+#define VIA1_SOURCE_BASE	8
+#define VIA2_SOURCE_BASE	16
+#define RBF_SOURCE_BASE		24
+#define MAC_SCC_SOURCE_BASE	32
+#define NUBUS_SOURCE_BASE	40
+#define NUBUS_MAX_SOURCES	8
+
+/* FIXME: sources not contigous ... */
+#define NUM_MAC_SOURCES   (NUBUS_SOURCE_BASE+NUBUS_MAX_SOURCES-VIA1_SOURCE_BASE)
+
+#define IRQ_SRC_MASK (VIA1_SOURCE_BASE|VIA2_SOURCE_BASE|MAC_SCC_SOURCE_BASE)
+#define IRQ_IDX_MASK 7
+
+/* 
+ * quick hack to adapt old MACHSPEC-aware source
+ */
+#define	IRQ_IDX(irq)	(irq)
+
+#if 0
+/* convert vector number to int source number */
+#define IRQ_VECTOR_TO_SOURCE(v)	(v)
+
+/* convert irq_handler index to vector number */
+#define IRQ_SOURCE_TO_VECTOR(i)	(i)
+#endif
+
+/* interrupt service types */
+#define IRQ_TYPE_SLOW     0
+#define IRQ_TYPE_FAST     1
+#define IRQ_TYPE_PRIO     2
+
+#define	IRQ_SPURIOUS      (0)
+
+/* auto-vector interrupts */
+#define IRQ_AUTO_1        (1)
+#define IRQ_AUTO_2        (2)
+#define IRQ_AUTO_3        (3)
+#define IRQ_AUTO_4        (4)
+#define IRQ_AUTO_5        (5)
+#define IRQ_AUTO_6        (6)
+#define IRQ_AUTO_7        (7)
+
+/* VIA1 interrupts */
+#define IRQ_VIA1_0	  (8)	/* one second int. */
+#define IRQ_VIA1_1        (9)	/* VBlank int. */
+#define IRQ_MAC_VBL	  IRQ_VIA1_1
+#define IRQ_VIA1_2 	  (10)	/* ADB SR shifts complete */
+#define IRQ_MAC_ADB	  IRQ_VIA1_2
+#define IRQ_MAC_ADB_SR	  IRQ_VIA1_2
+#define IRQ_VIA1_3	  (11)	/* ADB SR CB2 ?? */
+#define IRQ_MAC_ADB_SD	  IRQ_VIA1_3
+#define IRQ_VIA1_4        (12)	/* ADB SR ext. clock pulse */
+#define IRQ_MAC_ADB_CL	  IRQ_VIA1_4
+#define IRQ_VIA1_5	  (13)
+#define IRQ_MAC_TIMER_2	  IRQ_VIA1_5
+#define IRQ_VIA1_6	  (14)
+#define IRQ_MAC_TIMER_1	  IRQ_VIA1_6
+#define IRQ_VIA1_7        (15)
+
+/* VIA2 interrupts */
+#define IRQ_VIA2_0	  (16)
+#define IRQ_MAC_SCSIDRQ	  IRQ_VIA2_0
+#define IRQ_VIA2_1        (17)
+#define IRQ_MAC_NUBUS	  IRQ_VIA2_1
+#define IRQ_VIA2_2 	  (18)
+#define IRQ_VIA2_3	  (19)
+#define IRQ_MAC_SCSI	  IRQ_VIA2_3
+#define IRQ_VIA2_4        (20)
+#define IRQ_VIA2_5	  (21)
+#define IRQ_VIA2_6	  (22)
+#define IRQ_VIA2_7        (23)
+
+/* RBV interrupts */
+#define IRQ_RBV_0	  (24)
+#define IRQ_RBV_1	  (25)
+#define IRQ_RBV_2 	  (26)
+#define IRQ_RBV_3	  (27)
+#define IRQ_RBV_4	  (28)
+#define IRQ_RBV_5	  (29)
+#define IRQ_RBV_6	  (30)
+#define IRQ_RBV_7	  (31)
+
+#define IRQ_SCC 	     (32)
+#define IRQ_SCCB	     (32)
+#define IRQ_SCCA	     (33)
+#if 0 /* FIXME: are there multiple interrupt conditions on the SCC ?? */
+/* SCC interrupts */
+#define IRQ_SCCB_TX	     (32)
+#define IRQ_SCCB_STAT	     (33)
+#define IRQ_SCCB_RX	     (34)
+#define IRQ_SCCB_SPCOND	     (35)
+#define IRQ_SCCA_TX	     (36)
+#define IRQ_SCCA_STAT	     (37)
+#define IRQ_SCCA_RX	     (38)
+#define IRQ_SCCA_SPCOND	     (39)
+#endif
+
+#define IRQ_NUBUS_1	     (40)
+
+#define INT_CLK   24576	    /* CLK while int_clk =2.456MHz and divide = 100 */
+#define INT_TICKS 246	    /* to make sched_time = 99.902... HZ */
+
+
+#define VIA_ENABLE	0
+#define VIA_PENDING	1
+#define VIA_SERVICE	2
+#define VIA_MASK	3
+
+/* 
+ * Utility functions for setting/clearing bits in the interrupt registers of
+ * the VIA. 
+ */
+
+void mac_enable_irq( unsigned irq );
+void mac_disable_irq( unsigned irq );
+void mac_turnon_irq( unsigned irq );
+void mac_turnoff_irq( unsigned irq );
+void mac_clear_pending_irq( unsigned irq );
+int  mac_irq_pending( unsigned irq );
+int  nubus_request_irq(int slot, void (*handler)(int,void *,struct pt_regs *));
+int  nubus_free_irq(int slot);
+
+unsigned long mac_register_nubus_int( void );
+void mac_unregister_nubus_int( unsigned long );
+
+extern void mac_default_handler(int irq, void *dev_id, struct pt_regs *regs);
+extern void via1_irq(int irq, void *dev_id, struct pt_regs *regs);
+extern void via2_irq(int irq, void *dev_id, struct pt_regs *regs);
+extern void  rbv_irq(int irq, void *dev_id, struct pt_regs *regs);
+extern void mac_bang(int irq, void *dev_id, struct pt_regs *regs);
+		
+extern void mac_SCC_handler(int irq, void *dev_id, struct pt_regs *regs);
+
+#endif /* asm/macints.h */