47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/*
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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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* Distributed under the terms of the GPL, version 2
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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 busdevice {
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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 parent_irq;
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int eim;
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struct irq_region *busdev_region;
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};
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/* short cut to keep the compiler happy */
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#define BUSDEV_DEV(x) ((struct busdevice *) (x))
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int gsc_common_irqsetup(struct parisc_device *parent, struct busdevice *busdev);
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extern int gsc_alloc_irq(struct gsc_irq *dev); /* dev needs an irq */
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extern int gsc_claim_irq(struct gsc_irq *dev, int irq); /* dev needs this irq */
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irqreturn_t busdev_barked(int busdev_irq, void *dev, struct pt_regs *regs);
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