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