ipic.h

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/*
 * IPIC external definitions and structure.
 *
 * Maintainer: Kumar Gala <[email protected]>
 *
 * Copyright 2005 Freescale Semiconductor, Inc
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */
#ifdef __KERNEL__
#ifndef __ASM_IPIC_H__
#define __ASM_IPIC_H__

#include <linux/irq.h>

/* Flags when we init the IPIC */
#define IPIC_SPREADMODE_GRP_A   0x00000001
#define IPIC_SPREADMODE_GRP_B   0x00000002
#define IPIC_SPREADMODE_GRP_C   0x00000004
#define IPIC_SPREADMODE_GRP_D   0x00000008
#define IPIC_SPREADMODE_MIX_A   0x00000010
#define IPIC_SPREADMODE_MIX_B   0x00000020
#define IPIC_DISABLE_MCP_OUT    0x00000040
#define IPIC_IRQ0_MCP       0x00000080

/* IPIC registers offsets */
#define IPIC_SICFR  0x00    /* System Global Interrupt Configuration Register */
#define IPIC_SIVCR  0x04    /* System Global Interrupt Vector Register */
#define IPIC_SIPNR_H    0x08    /* System Internal Interrupt Pending Register (HIGH) */
#define IPIC_SIPNR_L    0x0C    /* System Internal Interrupt Pending Register (LOW) */
#define IPIC_SIPRR_A    0x10    /* System Internal Interrupt group A Priority Register */
#define IPIC_SIPRR_B    0x14    /* System Internal Interrupt group B Priority Register */
#define IPIC_SIPRR_C    0x18    /* System Internal Interrupt group C Priority Register */
#define IPIC_SIPRR_D    0x1C    /* System Internal Interrupt group D Priority Register */
#define IPIC_SIMSR_H    0x20    /* System Internal Interrupt Mask Register (HIGH) */
#define IPIC_SIMSR_L    0x24    /* System Internal Interrupt Mask Register (LOW) */
#define IPIC_SICNR  0x28    /* System Internal Interrupt Control Register */
#define IPIC_SEPNR  0x2C    /* System External Interrupt Pending Register */
#define IPIC_SMPRR_A    0x30    /* System Mixed Interrupt group A Priority Register */
#define IPIC_SMPRR_B    0x34    /* System Mixed Interrupt group B Priority Register */
#define IPIC_SEMSR  0x38    /* System External Interrupt Mask Register */
#define IPIC_SECNR  0x3C    /* System External Interrupt Control Register */
#define IPIC_SERSR  0x40    /* System Error Status Register */
#define IPIC_SERMR  0x44    /* System Error Mask Register */
#define IPIC_SERCR  0x48    /* System Error Control Register */
#define IPIC_SIFCR_H    0x50    /* System Internal Interrupt Force Register (HIGH) */
#define IPIC_SIFCR_L    0x54    /* System Internal Interrupt Force Register (LOW) */
#define IPIC_SEFCR  0x58    /* System External Interrupt Force Register */
#define IPIC_SERFR  0x5C    /* System Error Force Register */
#define IPIC_SCVCR  0x60    /* System Critical Interrupt Vector Register */
#define IPIC_SMVCR  0x64    /* System Management Interrupt Vector Register */

enum ipic_prio_grp {
    IPIC_INT_GRP_A = IPIC_SIPRR_A,
    IPIC_INT_GRP_D = IPIC_SIPRR_D,
    IPIC_MIX_GRP_A = IPIC_SMPRR_A,
    IPIC_MIX_GRP_B = IPIC_SMPRR_B,
};

enum ipic_mcp_irq {
    IPIC_MCP_IRQ0 = 0,
    IPIC_MCP_WDT  = 1,
    IPIC_MCP_SBA  = 2,
    IPIC_MCP_PCI1 = 5,
    IPIC_MCP_PCI2 = 6,
    IPIC_MCP_MU   = 7,
};

extern int ipic_set_priority(unsigned int irq, unsigned int priority);
extern void ipic_set_highest_priority(unsigned int irq);
extern void ipic_set_default_priority(void);
extern void ipic_enable_mcp(enum ipic_mcp_irq mcp_irq);
extern void ipic_disable_mcp(enum ipic_mcp_irq mcp_irq);
extern u32 ipic_get_mcp_status(void);
extern void ipic_clear_mcp_status(u32 mask);

extern struct ipic * ipic_init(struct device_node *node, unsigned int flags);
extern unsigned int ipic_get_irq(void);

#endif /* __ASM_IPIC_H__ */
#endif /* __KERNEL__ */