1/*
2 * drivers/parisc/gsc.h
3 * Declarations for functions in gsc.c
4 * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox
5 *
6 * Distributed under the terms of the GPL, version 2
7 */
8
9#include <linux/interrupt.h>
10#include <asm/hardware.h>
11#include <asm/parisc-device.h>
12
13#define OFFSET_IRR 0x0000   /* Interrupt request register */
14#define OFFSET_IMR 0x0004   /* Interrupt mask register */
15#define OFFSET_IPR 0x0008   /* Interrupt pending register */
16#define OFFSET_ICR 0x000C   /* Interrupt control register */
17#define OFFSET_IAR 0x0010   /* Interrupt address register */
18
19/* PA I/O Architected devices support at least 5 bits in the EIM register. */
20#define GSC_EIM_WIDTH 5
21
22struct gsc_irq {
23	unsigned long txn_addr;	/* IRQ "target" */
24	int txn_data;		/* HW "IRQ" */
25	int irq;		/* virtual IRQ */
26};
27
28struct gsc_asic {
29	struct parisc_device *gsc;
30	unsigned long hpa;
31	char *name;
32	int version;
33	int type;
34	int eim;
35	int global_irq[32];
36};
37
38int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic);
39int gsc_alloc_irq(struct gsc_irq *dev);			/* dev needs an irq */
40int gsc_claim_irq(struct gsc_irq *dev, int irq);	/* dev needs this irq */
41int gsc_assign_irq(struct irq_chip *type, void *data);
42int gsc_find_local_irq(unsigned int irq, int *global_irq, int limit);
43void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl,
44		void (*choose)(struct parisc_device *child, void *ctrl));
45void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp);
46
47irqreturn_t gsc_asic_intr(int irq, void *dev);
48