patch-2.1.54 linux/include/linux/openpic.h

• Lines: 365
• Date: Sat Sep 6 10:04:16 1997
• Orig file: v2.1.53/linux/include/linux/openpic.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.53/linux/include/linux/openpic.h linux/include/linux/openpic.h
@@ -0,0 +1,364 @@
+/*
+ *  linux/openpic.h -- OpenPIC definitions
+ *
+ *  Copyright (C) 1997 Geert Uytterhoeven
+ *
+ *  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.
+ *
+ *  This file is based on the following documentation:
+ *
+ *	The Open Programmable Interrupt Controller (PIC)
+ *	Register Interface Specification Revision 1.2
+ *
+ *	Issue Date: October 1995
+ *
+ *	Issued jointly by Advanced Micro Devices and Cyrix Corporation
+ *
+ *	AMD is a registered trademark of Advanced Micro Devices, Inc.
+ *	Copyright (C) 1995, Advanced Micro Devices, Inc. and Cyrix, Inc.
+ *	All Rights Reserved.
+ *
+ *  To receive a copy of this documentation, send an email to openpic@amd.com.
+ *
+ *  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 _LINUX_OPENPIC_H
+#define _LINUX_OPENPIC_H
+
+#if !defined(__powerpc__) && !defined(__i386__)
+#error Unsupported OpenPIC platform
+#endif
+
+
+#ifdef __KERNEL__
+
+    /*
+     *  OpenPIC supports up to 2048 interrupt sources and up to 32 processors
+     */
+
+#define OPENPIC_MAX_SOURCES	2048
+#define OPENPIC_MAX_PROCESSORS	32
+
+#define OPENPIC_NUM_TIMERS	4
+#define OPENPIC_NUM_IPI		4
+#define OPENPIC_NUM_PRI		16
+#define OPENPIC_NUM_VECTORS	256
+
+
+    /*
+     *  OpenPIC Registers are 32 bits and aligned on 128 bit boundaries
+     */
+
+typedef struct _OpenPIC_Reg {
+    u_int Reg;					/* Little endian! */
+    char Pad[0xc];
+} OpenPIC_Reg;
+
+
+    /*
+     *  Per Processor Registers
+     */
+
+typedef struct _OpenPIC_Processor {
+    /*
+     *  Private Shadow Registers (for SLiC backwards compatibility)
+     */
+    u_int IPI0_Dispatch_Shadow;			/* Write Only */
+    char Pad1[0x4];
+    u_int IPI0_Vector_Priority_Shadow;		/* Read/Write */
+    char Pad2[0x34];
+    /*
+     *  Interprocessor Interrupt Command Ports
+     */
+    OpenPIC_Reg _IPI_Dispatch[OPENPIC_NUM_IPI];	/* Write Only */
+    /*
+     *  Current Task Priority Register
+     */
+    OpenPIC_Reg _Current_Task_Priority;		/* Read/Write */
+#ifndef __powerpc__
+    /*
+     *  Who Am I Register
+     */
+    OpenPIC_Reg _Who_Am_I;			/* Read Only */
+#else
+    char Pad3[0x10];
+#endif
+#ifndef __i386__
+    /*
+     *  Interrupt Acknowledge Register
+     */
+    OpenPIC_Reg _Interrupt_Acknowledge;		/* Read Only */
+#else
+    char Pad4[0x10];
+#endif
+    /*
+     *  End of Interrupt (EOI) Register
+     */
+    OpenPIC_Reg _EOI;				/* Read/Write */
+    char Pad5[0xf40];
+} OpenPIC_Processor;
+
+
+    /*
+     *  Timer Registers
+     */
+
+typedef struct _OpenPIC_Timer {
+    OpenPIC_Reg _Current_Count;			/* Read Only */
+    OpenPIC_Reg _Base_Count;			/* Read/Write */
+    OpenPIC_Reg _Vector_Priority;		/* Read/Write */
+    OpenPIC_Reg _Destination;			/* Read/Write */
+} OpenPIC_Timer;
+
+
+    /*
+     *  Global Registers
+     */
+
+typedef struct _OpenPIC_Global {
+    /*
+     *  Feature Reporting Registers
+     */
+    OpenPIC_Reg _Feature_Reporting0;		/* Read Only */
+    OpenPIC_Reg _Feature_Reporting1;		/* Future Expansion */
+    /*
+     *  Global Configuration Registers
+     */
+    OpenPIC_Reg _Global_Configuration0;		/* Read/Write */
+    OpenPIC_Reg _Global_Configuration1;		/* Future Expansion */
+    /*
+     *  Vendor Specific Registers
+     */
+    OpenPIC_Reg _Vendor_Specific[4];
+    /*
+     *  Vendor Identification Register
+     */
+    OpenPIC_Reg _Vendor_Identification;		/* Read Only */
+    /*
+     *  Processor Initialization Register
+     */
+    OpenPIC_Reg _Processor_Initialization;	/* Read/Write */
+    /*
+     *  IPI Vector/Priority Registers
+     */
+    OpenPIC_Reg _IPI_Vector_Priority[OPENPIC_NUM_IPI];	/* Read/Write */
+    /*
+     *  Spurious Vector Register
+     */
+    OpenPIC_Reg _Spurious_Vector;		/* Read/Write */
+    /*
+     *  Global Timer Registers
+     */
+    OpenPIC_Reg _Timer_Frequency;		/* Read/Write */
+    OpenPIC_Timer Timer[OPENPIC_NUM_TIMERS];
+    char Pad1[0xee00];
+} OpenPIC_Global;
+
+
+    /*
+     *  Interrupt Source Registers
+     */
+
+typedef struct _OpenPIC_Source {
+    OpenPIC_Reg _Vector_Priority;		/* Read/Write */
+    OpenPIC_Reg _Destination;			/* Read/Write */
+} OpenPIC_Source;
+
+
+    /*
+     *  OpenPIC Register Map
+     */
+
+struct OpenPIC {
+#ifndef __powerpc__
+    /*
+     *  Per Processor Registers --- Private Access
+     */
+    OpenPIC_Processor Private;
+#else
+    char Pad1[0x1000];
+#endif
+    /*
+     *  Global Registers
+     */
+    OpenPIC_Global Global;
+    /*
+     *  Interrupt Source Configuration Registers
+     */
+    OpenPIC_Source Source[OPENPIC_MAX_SOURCES];
+    /*
+     *  Per Processor Registers
+     */
+    OpenPIC_Processor Processor[OPENPIC_MAX_PROCESSORS];
+};
+
+extern volatile struct OpenPIC *OpenPIC;
+
+
+    /*
+     *  Current Task Priority Register
+     */
+
+#define OPENPIC_CURRENT_TASK_PRIORITY_MASK	0x0000000f
+
+    /*
+     *  Who Am I Register
+     */
+
+#define OPENPIC_WHO_AM_I_ID_MASK		0x0000001f
+
+    /*
+     *  Feature Reporting Register 0
+     */
+
+#define OPENPIC_FEATURE_LAST_SOURCE_MASK	0x07ff0000
+#define OPENPIC_FEATURE_LAST_SOURCE_SHIFT	16
+#define OPENPIC_FEATURE_LAST_PROCESSOR_MASK	0x00001f00
+#define OPENPIC_FEATURE_LAST_PROCESSOR_SHIFT	8
+#define OPENPIC_FEATURE_VERSION_MASK		0x000000ff
+
+    /*
+     *  Global Configuration Register 0
+     */
+
+#define OPENPIC_CONFIG_RESET			0x80000000
+#define OPENPIC_CONFIG_8259_PASSTHROUGH_DISABLE	0x20000000
+#define OPENPIC_CONFIG_BASE_MASK		0x000fffff
+
+    /*
+     *  Vendor Identification Register
+     */
+
+#define OPENPIC_VENDOR_ID_STEPPING_MASK		0x00ff0000
+#define OPENPIC_VENDOR_ID_STEPPING_SHIFT	16
+#define OPENPIC_VENDOR_ID_DEVICE_ID_MASK	0x0000ff00
+#define OPENPIC_VENDOR_ID_DEVICE_ID_SHIFT	8
+#define OPENPIC_VENDOR_ID_VENDOR_ID_MASK	0x000000ff
+
+    /*
+     *  Vector/Priority Registers
+     */
+
+#define OPENPIC_MASK				0x80000000
+#define OPENPIC_ACTIVITY			0x40000000	/* Read Only */
+#define OPENPIC_PRIORITY_MASK			0x000f0000
+#define OPENPIC_PRIORITY_SHIFT			16
+#define OPENPIC_VECTOR_MASK			0x000000ff
+
+
+    /*
+     *  Interrupt Source Registers
+     */
+
+#define OPENPIC_SENSE_POLARITY			0x00800000	/* Undoc'd */
+#define OPENPIC_SENSE_LEVEL			0x00400000
+
+
+    /*
+     *  Timer Registers
+     */
+
+#define OPENPIC_COUNT_MASK			0x7fffffff
+#define OPENPIC_TIMER_TOGGLE			0x80000000
+#define OPENPIC_TIMER_COUNT_INHIBIT		0x80000000
+
+
+    /*
+     *  Aliases to make life simpler
+     */
+
+/* Per Processor Registers */
+#define IPI_Dispatch(i)			_IPI_Dispatch[i].Reg
+#define Current_Task_Priority		_Current_Task_Priority.Reg
+#ifndef __powerpc__
+#define Who_Am_I			_Who_Am_I.Reg
+#endif
+#ifndef __i386__
+#define Interrupt_Acknowledge		_Interrupt_Acknowledge.Reg
+#endif
+#define EOI				_EOI.Reg
+
+/* Global Registers */
+#define Feature_Reporting0		_Feature_Reporting0.Reg
+#define Feature_Reporting1		_Feature_Reporting1.Reg
+#define Global_Configuration0		_Global_Configuration0.Reg
+#define Global_Configuration1		_Global_Configuration1.Reg
+#define Vendor_Specific(i)		_Vendor_Specific[i].Reg
+#define Vendor_Identification		_Vendor_Identification.Reg
+#define Processor_Initialization	_Processor_Initialization.Reg
+#define IPI_Vector_Priority(i)		_IPI_Vector_Priority[i].Reg
+#define Spurious_Vector			_Spurious_Vector.Reg
+#define Timer_Frequency			_Timer_Frequency.Reg
+
+/* Timer Registers */
+#define Current_Count			_Current_Count.Reg
+#define Base_Count			_Base_Count.Reg
+#define Vector_Priority			_Vector_Priority.Reg
+#define Destination			_Destination.Reg
+
+/* Interrupt Source Registers */
+#define Vector_Priority			_Vector_Priority.Reg
+#define Destination			_Destination.Reg
+
+
+    /*
+     *  Vendor and Device IDs
+     */
+
+#define OPENPIC_VENDOR_ID_APPLE		0x14
+#define OPENPIC_DEVICE_ID_APPLE_HYDRA	0x46
+
+
+    /*
+     *  OpenPIC Operations
+     */
+
+/* Global Operations */
+extern void openpic_init(void);
+extern void openpic_reset(void);
+extern void openpic_enable_8259_pass_through(void);
+extern void openpic_disable_8259_pass_through(void);
+#ifndef __i386__
+extern u_int openpic_irq(u_int cpu);
+#endif
+#ifndef __powerpc__
+extern void openpic_eoi(void);
+extern u_int openpic_get_priority(void);
+extern void openpic_set_priority(u_int pri);
+#else
+extern void openpic_eoi(u_int cpu);
+extern u_int openpic_get_priority(u_int cpu);
+extern void openpic_set_priority(u_int cpu, u_int pri);
+#endif
+extern u_int openpic_get_spurious(void);
+extern void openpic_set_spurious(u_int vector);
+extern void openpic_init_processor(u_int cpumask);
+
+/* Interprocessor Interrupts */
+extern void openpic_initipi(u_int ipi, u_int pri, u_int vector);
+#ifndef __powerpc__
+extern void openpic_cause_IPI(u_int ipi, u_int cpumask);
+#else
+extern void openpic_cause_IPI(u_int cpu, u_int ipi, u_int cpumask);
+#endif
+
+/* Timer Interrupts */
+extern void openpic_inittimer(u_int timer, u_int pri, u_int vector);
+extern void openpic_maptimer(u_int timer, u_int cpumask);
+
+/* Interrupt Sources */
+extern void openpic_enable_irq(u_int irq);
+extern void openpic_disable_irq(u_int irq);
+extern void openpic_initirq(u_int irq, u_int pri, u_int vector, int polarity,
+			    int is_level);
+extern void openpic_mapirq(u_int irq, u_int cpumask);
+extern void openpic_set_sense(u_int irq, int sense);
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_OPENPIC_H */