/*
   * drivers/parisc/gsc.h
   * Declarations for functions in gsc.c
   * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox
   *
   * Distributed under the terms of the GPL, version 2
   */
  
  #include <linux/interrupt.h>
  #include <asm/hardware.h>
  #include <asm/parisc-device.h>
  
  #define OFFSET_IRR 0x0000   /* Interrupt request register */
  #define OFFSET_IMR 0x0004   /* Interrupt mask register */
  #define OFFSET_IPR 0x0008   /* Interrupt pending register */
  #define OFFSET_ICR 0x000C   /* Interrupt control register */
  #define OFFSET_IAR 0x0010   /* Interrupt address register */
  
  /* PA I/O Architected devices support at least 5 bits in the EIM register. */
  #define GSC_EIM_WIDTH 5
  
  struct gsc_irq {
  	unsigned long txn_addr;	/* IRQ "target" */
  	int txn_data;		/* HW "IRQ" */
  	int irq;		/* virtual IRQ */
  };
  
  struct gsc_asic {
  	struct parisc_device *gsc;
  	unsigned long hpa;
  	char *name;
  	int version;
  	int type;
  	int eim;
  	int global_irq[32];
  };
  
  int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic);
  int gsc_alloc_irq(struct gsc_irq *dev);			/* dev needs an irq */
  int gsc_claim_irq(struct gsc_irq *dev, int irq);	/* dev needs this irq */

  int gsc_assign_irq(struct irq_chip *type, void *data);

  int gsc_find_local_irq(unsigned int irq, int *global_irq, int limit);
  void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl,
  		void (*choose)(struct parisc_device *child, void *ctrl));
  void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp);

  irqreturn_t gsc_asic_intr(int irq, void *dev);