1 /*
2 * drivers/parisc/gsc.h
3 * Declarations for functions in gsc.c
4 * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox
5 *
6 * Distributed under the terms of the GPL, version 2
7 */
8
9 #include <linux/interrupt.h>
10 #include <asm/hardware.h>
11 #include <asm/parisc-device.h>
12
13 #define OFFSET_IRR 0x0000 /* Interrupt request register */
14 #define OFFSET_IMR 0x0004 /* Interrupt mask register */
15 #define OFFSET_IPR 0x0008 /* Interrupt pending register */
16 #define OFFSET_ICR 0x000C /* Interrupt control register */
17 #define OFFSET_IAR 0x0010 /* Interrupt address register */
18
19 /* PA I/O Architected devices support at least 5 bits in the EIM register. */
20 #define GSC_EIM_WIDTH 5
21
22 struct gsc_irq {
23 unsigned long txn_addr; /* IRQ "target" */
24 int txn_data; /* HW "IRQ" */
25 int irq; /* virtual IRQ */
26 };
27
28 struct gsc_asic {
29 struct parisc_device *gsc;
30 unsigned long hpa;
31 char *name;
32 int version;
33 int type;
34 int eim;
35 int global_irq[32];
36 };
37
38 int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic);
39 int gsc_alloc_irq(struct gsc_irq *dev); /* dev needs an irq */
40 int gsc_claim_irq(struct gsc_irq *dev, int irq); /* dev needs this irq */
41 int gsc_assign_irq(struct irq_chip *type, void *data);
42 int gsc_find_local_irq(unsigned int irq, int *global_irq, int limit);
43 void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl,
44 void (*choose)(struct parisc_device *child, void *ctrl));
45 void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp);
46
47 irqreturn_t gsc_asic_intr(int irq, void *dev);
48
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