1c88a15c6SThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */ 21da177e4SLinus Torvalds /* 31da177e4SLinus Torvalds * drivers/parisc/gsc.h 41da177e4SLinus Torvalds * Declarations for functions in gsc.c 51da177e4SLinus Torvalds * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox 61da177e4SLinus Torvalds */ 71da177e4SLinus Torvalds 81da177e4SLinus Torvalds #include <linux/interrupt.h> 91da177e4SLinus Torvalds #include <asm/hardware.h> 101da177e4SLinus Torvalds #include <asm/parisc-device.h> 111da177e4SLinus Torvalds 121da177e4SLinus Torvalds #define OFFSET_IRR 0x0000 /* Interrupt request register */ 131da177e4SLinus Torvalds #define OFFSET_IMR 0x0004 /* Interrupt mask register */ 141da177e4SLinus Torvalds #define OFFSET_IPR 0x0008 /* Interrupt pending register */ 151da177e4SLinus Torvalds #define OFFSET_ICR 0x000C /* Interrupt control register */ 161da177e4SLinus Torvalds #define OFFSET_IAR 0x0010 /* Interrupt address register */ 171da177e4SLinus Torvalds 181da177e4SLinus Torvalds /* PA I/O Architected devices support at least 5 bits in the EIM register. */ 191da177e4SLinus Torvalds #define GSC_EIM_WIDTH 5 201da177e4SLinus Torvalds 211da177e4SLinus Torvalds struct gsc_irq { 221da177e4SLinus Torvalds unsigned long txn_addr; /* IRQ "target" */ 231da177e4SLinus Torvalds int txn_data; /* HW "IRQ" */ 241da177e4SLinus Torvalds int irq; /* virtual IRQ */ 251da177e4SLinus Torvalds }; 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds struct gsc_asic { 281da177e4SLinus Torvalds struct parisc_device *gsc; 291da177e4SLinus Torvalds unsigned long hpa; 301da177e4SLinus Torvalds char *name; 311da177e4SLinus Torvalds int version; 321da177e4SLinus Torvalds int type; 331da177e4SLinus Torvalds int eim; 34*f77f482eSHelge Deller struct gsc_irq gsc_irq; 351da177e4SLinus Torvalds int global_irq[32]; 361da177e4SLinus Torvalds }; 371da177e4SLinus Torvalds 381da177e4SLinus Torvalds int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic); 391da177e4SLinus Torvalds int gsc_alloc_irq(struct gsc_irq *dev); /* dev needs an irq */ 401da177e4SLinus Torvalds int gsc_claim_irq(struct gsc_irq *dev, int irq); /* dev needs this irq */ 41dfe07565SThomas Gleixner int gsc_assign_irq(struct irq_chip *type, void *data); 421da177e4SLinus Torvalds int gsc_find_local_irq(unsigned int irq, int *global_irq, int limit); 431da177e4SLinus Torvalds void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl, 441da177e4SLinus Torvalds void (*choose)(struct parisc_device *child, void *ctrl)); 451da177e4SLinus Torvalds void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp); 461da177e4SLinus Torvalds 477d12e780SDavid Howells irqreturn_t gsc_asic_intr(int irq, void *dev); 48