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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * drivers/parisc/gsc.h4 * Declarations for functions in gsc.c5 * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox6 */7 8#include <linux/interrupt.h>9#include <asm/hardware.h>10#include <asm/parisc-device.h>11 12#define OFFSET_IRR 0x0000 /* Interrupt request register */13#define OFFSET_IMR 0x0004 /* Interrupt mask register */14#define OFFSET_IPR 0x0008 /* Interrupt pending register */15#define OFFSET_ICR 0x000C /* Interrupt control register */16#define OFFSET_IAR 0x0010 /* Interrupt address register */17 18/* PA I/O Architected devices support at least 5 bits in the EIM register. */19#define GSC_EIM_WIDTH 520 21struct gsc_irq {22 unsigned long txn_addr; /* IRQ "target" */23 int txn_data; /* HW "IRQ" */24 int irq; /* virtual IRQ */25};26 27struct gsc_asic {28 struct parisc_device *gsc;29 unsigned long hpa;30 char *name;31 int version;32 int type;33 int eim;34 struct gsc_irq gsc_irq;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