162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * drivers/parisc/gsc.h 462306a36Sopenharmony_ci * Declarations for functions in gsc.c 562306a36Sopenharmony_ci * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox 662306a36Sopenharmony_ci */ 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#include <linux/interrupt.h> 962306a36Sopenharmony_ci#include <asm/hardware.h> 1062306a36Sopenharmony_ci#include <asm/parisc-device.h> 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci#define OFFSET_IRR 0x0000 /* Interrupt request register */ 1362306a36Sopenharmony_ci#define OFFSET_IMR 0x0004 /* Interrupt mask register */ 1462306a36Sopenharmony_ci#define OFFSET_IPR 0x0008 /* Interrupt pending register */ 1562306a36Sopenharmony_ci#define OFFSET_ICR 0x000C /* Interrupt control register */ 1662306a36Sopenharmony_ci#define OFFSET_IAR 0x0010 /* Interrupt address register */ 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ci/* PA I/O Architected devices support at least 5 bits in the EIM register. */ 1962306a36Sopenharmony_ci#define GSC_EIM_WIDTH 5 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_cistruct gsc_irq { 2262306a36Sopenharmony_ci unsigned long txn_addr; /* IRQ "target" */ 2362306a36Sopenharmony_ci int txn_data; /* HW "IRQ" */ 2462306a36Sopenharmony_ci int irq; /* virtual IRQ */ 2562306a36Sopenharmony_ci}; 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_cistruct gsc_asic { 2862306a36Sopenharmony_ci struct parisc_device *gsc; 2962306a36Sopenharmony_ci unsigned long hpa; 3062306a36Sopenharmony_ci char *name; 3162306a36Sopenharmony_ci int version; 3262306a36Sopenharmony_ci int type; 3362306a36Sopenharmony_ci int eim; 3462306a36Sopenharmony_ci struct gsc_irq gsc_irq; 3562306a36Sopenharmony_ci int global_irq[32]; 3662306a36Sopenharmony_ci}; 3762306a36Sopenharmony_ci 3862306a36Sopenharmony_ciint gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic); 3962306a36Sopenharmony_ciint gsc_alloc_irq(struct gsc_irq *dev); /* dev needs an irq */ 4062306a36Sopenharmony_ciint gsc_claim_irq(struct gsc_irq *dev, int irq); /* dev needs this irq */ 4162306a36Sopenharmony_ciint gsc_assign_irq(struct irq_chip *type, void *data); 4262306a36Sopenharmony_ciint gsc_find_local_irq(unsigned int irq, int *global_irq, int limit); 4362306a36Sopenharmony_civoid gsc_fixup_irqs(struct parisc_device *parent, void *ctrl, 4462306a36Sopenharmony_ci void (*choose)(struct parisc_device *child, void *ctrl)); 4562306a36Sopenharmony_civoid gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp); 4662306a36Sopenharmony_ci 4762306a36Sopenharmony_ciirqreturn_t gsc_asic_intr(int irq, void *dev); 48