patch-2.4.1 linux/arch/ppc/kernel/open_pic_defs.h
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- Lines: 329
- Date:
Mon Jan 22 15:41:15 2001
- Orig file:
v2.4.0/linux/arch/ppc/kernel/open_pic_defs.h
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.0/linux/arch/ppc/kernel/open_pic_defs.h linux/arch/ppc/kernel/open_pic_defs.h
@@ -0,0 +1,328 @@
+/*
+ * linux/openpic.h -- OpenPIC definitions
+ *
+ * Copyright (C) 1997 Geert Uytterhoeven
+ *
+ * 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
+
+#ifdef __KERNEL__
+
+#include <linux/config.h>
+
+ /*
+ * OpenPIC supports up to 2048 interrupt sources and up to 32 processors
+ */
+
+#define OPENPIC_MAX_SOURCES 2048
+#define OPENPIC_MAX_PROCESSORS 32
+#define OPENPIC_MAX_ISU 16
+
+#define OPENPIC_NUM_TIMERS 4
+#define OPENPIC_NUM_IPI 4
+#define OPENPIC_NUM_PRI 16
+#define OPENPIC_NUM_VECTORS 256
+
+
+ /*
+ * Non-offset'ed vector numbers
+ */
+
+#define OPENPIC_VEC_TIMER 64 /* and up */
+#define OPENPIC_VEC_IPI 72 /* and up */
+#define OPENPIC_VEC_SPURIOUS 127
+
+
+ /*
+ * 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 */
+ char Pad3[0x10];
+ /*
+ * Interrupt Acknowledge Register
+ */
+ OpenPIC_Reg _Interrupt_Acknowledge; /* Read Only */
+ /*
+ * 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_SourcePtr;
+
+
+ /*
+ * OpenPIC Register Map
+ */
+
+struct OpenPIC {
+ char Pad1[0x1000];
+ /*
+ * 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_POLARITY_POSITIVE 0x00800000
+#define OPENPIC_POLARITY_NEGATIVE 0x00000000
+#define OPENPIC_POLARITY_MASK 0x00800000
+#define OPENPIC_SENSE_LEVEL 0x00400000
+#define OPENPIC_SENSE_EDGE 0x00000000
+#define OPENPIC_SENSE_MASK 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
+#define Interrupt_Acknowledge _Interrupt_Acknowledge.Reg
+#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
+
+ /*
+ * Local (static) OpenPIC Operations
+ */
+
+
+/* Global Operations */
+static void openpic_reset(void);
+static void openpic_enable_8259_pass_through(void);
+static void openpic_disable_8259_pass_through(void);
+static u_int openpic_irq(void);
+static void openpic_eoi(void);
+static u_int openpic_get_priority(void);
+static void openpic_set_priority(u_int pri);
+static u_int openpic_get_spurious(void);
+static void openpic_set_spurious(u_int vector);
+
+#ifdef CONFIG_SMP
+/* Interprocessor Interrupts */
+static void openpic_initipi(u_int ipi, u_int pri, u_int vector);
+static void openpic_ipi_action(int cpl, void *dev_id, struct pt_regs *regs);
+#endif
+
+/* Timer Interrupts */
+static void openpic_inittimer(u_int timer, u_int pri, u_int vector);
+static void openpic_maptimer(u_int timer, u_int cpumask);
+
+/* Interrupt Sources */
+static void openpic_enable_irq(u_int irq);
+static void openpic_disable_irq(u_int irq);
+static void openpic_initirq(u_int irq, u_int pri, u_int vector, int polarity,
+ int is_level);
+static void openpic_mapirq(u_int irq, u_int cpumask);
+static void openpic_set_sense(u_int irq, int sense);
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_OPENPIC_H */
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