18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * drivers/parisc/gsc.h 48c2ecf20Sopenharmony_ci * Declarations for functions in gsc.c 58c2ecf20Sopenharmony_ci * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox 68c2ecf20Sopenharmony_ci */ 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci#include <linux/interrupt.h> 98c2ecf20Sopenharmony_ci#include <asm/hardware.h> 108c2ecf20Sopenharmony_ci#include <asm/parisc-device.h> 118c2ecf20Sopenharmony_ci 128c2ecf20Sopenharmony_ci#define OFFSET_IRR 0x0000 /* Interrupt request register */ 138c2ecf20Sopenharmony_ci#define OFFSET_IMR 0x0004 /* Interrupt mask register */ 148c2ecf20Sopenharmony_ci#define OFFSET_IPR 0x0008 /* Interrupt pending register */ 158c2ecf20Sopenharmony_ci#define OFFSET_ICR 0x000C /* Interrupt control register */ 168c2ecf20Sopenharmony_ci#define OFFSET_IAR 0x0010 /* Interrupt address register */ 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_ci/* PA I/O Architected devices support at least 5 bits in the EIM register. */ 198c2ecf20Sopenharmony_ci#define GSC_EIM_WIDTH 5 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_cistruct gsc_irq { 228c2ecf20Sopenharmony_ci unsigned long txn_addr; /* IRQ "target" */ 238c2ecf20Sopenharmony_ci int txn_data; /* HW "IRQ" */ 248c2ecf20Sopenharmony_ci int irq; /* virtual IRQ */ 258c2ecf20Sopenharmony_ci}; 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_cistruct gsc_asic { 288c2ecf20Sopenharmony_ci struct parisc_device *gsc; 298c2ecf20Sopenharmony_ci unsigned long hpa; 308c2ecf20Sopenharmony_ci char *name; 318c2ecf20Sopenharmony_ci int version; 328c2ecf20Sopenharmony_ci int type; 338c2ecf20Sopenharmony_ci int eim; 348c2ecf20Sopenharmony_ci struct gsc_irq gsc_irq; 358c2ecf20Sopenharmony_ci int global_irq[32]; 368c2ecf20Sopenharmony_ci}; 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ciint gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic); 398c2ecf20Sopenharmony_ciint gsc_alloc_irq(struct gsc_irq *dev); /* dev needs an irq */ 408c2ecf20Sopenharmony_ciint gsc_claim_irq(struct gsc_irq *dev, int irq); /* dev needs this irq */ 418c2ecf20Sopenharmony_ciint gsc_assign_irq(struct irq_chip *type, void *data); 428c2ecf20Sopenharmony_ciint gsc_find_local_irq(unsigned int irq, int *global_irq, int limit); 438c2ecf20Sopenharmony_civoid gsc_fixup_irqs(struct parisc_device *parent, void *ctrl, 448c2ecf20Sopenharmony_ci void (*choose)(struct parisc_device *child, void *ctrl)); 458c2ecf20Sopenharmony_civoid gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp); 468c2ecf20Sopenharmony_ci 478c2ecf20Sopenharmony_ciirqreturn_t gsc_asic_intr(int irq, void *dev); 48