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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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