/* SPDX-License-Identifier: GPL-2.0-only */ /* * drivers/parisc/gsc.h * Declarations for functions in gsc.c * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox */ #include <linux/interrupt.h> #include <asm/hardware.h> #include <asm/parisc-device.h> #define OFFSET_IRR 0x0000 /* Interrupt request register */ #define OFFSET_IMR 0x0004 /* Interrupt mask register */ #define OFFSET_IPR 0x0008 /* Interrupt pending register */ #define OFFSET_ICR 0x000C /* Interrupt control register */ #define OFFSET_IAR 0x0010 /* Interrupt address register */ /* PA I/O Architected devices support at least 5 bits in the EIM register. */ #define GSC_EIM_WIDTH 5 struct gsc_irq { unsigned long txn_addr; /* IRQ "target" */ int txn_data; /* HW "IRQ" */ int irq; /* virtual IRQ */ }; struct gsc_asic { struct parisc_device *gsc; unsigned long hpa; char *name; int version; int type; int eim; struct gsc_irq gsc_irq; int global_irq[32]; }; int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic); int gsc_alloc_irq(struct gsc_irq *dev); /* dev needs an irq */ int gsc_claim_irq(struct gsc_irq *dev, int irq); /* dev needs this irq */ int gsc_assign_irq(struct irq_chip *type, void *data); int gsc_find_local_irq(unsigned int irq, int *global_irq, int limit); void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl, void (*choose)(struct parisc_device *child, void *ctrl)); void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp); irqreturn_t gsc_asic_intr(int irq, void *dev);