1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * drivers/parisc/gsc.h
 4 * Declarations for functions in gsc.c
 5 * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox
 6 */
 7
 8#include <linux/interrupt.h>
 9#include <asm/hardware.h>
10#include <asm/parisc-device.h>
11
12#define OFFSET_IRR 0x0000   /* Interrupt request register */
13#define OFFSET_IMR 0x0004   /* Interrupt mask register */
14#define OFFSET_IPR 0x0008   /* Interrupt pending register */
15#define OFFSET_ICR 0x000C   /* Interrupt control register */
16#define OFFSET_IAR 0x0010   /* Interrupt address register */
17
18/* PA I/O Architected devices support at least 5 bits in the EIM register. */
19#define GSC_EIM_WIDTH 5
20
21struct gsc_irq {
22	unsigned long txn_addr;	/* IRQ "target" */
23	int txn_data;		/* HW "IRQ" */
24	int irq;		/* virtual IRQ */
25};
26
27struct gsc_asic {
28	struct parisc_device *gsc;
29	unsigned long hpa;
30	char *name;
31	int version;
32	int type;
33	int eim;
34	int global_irq[32];
35};
36
37int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic);
38int gsc_alloc_irq(struct gsc_irq *dev);			/* dev needs an irq */
39int gsc_claim_irq(struct gsc_irq *dev, int irq);	/* dev needs this irq */
40int gsc_assign_irq(struct irq_chip *type, void *data);
41int gsc_find_local_irq(unsigned int irq, int *global_irq, int limit);
42void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl,
43		void (*choose)(struct parisc_device *child, void *ctrl));
44void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp);
45
46irqreturn_t gsc_asic_intr(int irq, void *dev);

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * drivers/parisc/gsc.h
 4 * Declarations for functions in gsc.c
 5 * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox
 6 */
 7
 8#include <linux/interrupt.h>
 9#include <asm/hardware.h>
10#include <asm/parisc-device.h>
11
12#define OFFSET_IRR 0x0000   /* Interrupt request register */
13#define OFFSET_IMR 0x0004   /* Interrupt mask register */
14#define OFFSET_IPR 0x0008   /* Interrupt pending register */
15#define OFFSET_ICR 0x000C   /* Interrupt control register */
16#define OFFSET_IAR 0x0010   /* Interrupt address register */
17
18/* PA I/O Architected devices support at least 5 bits in the EIM register. */
19#define GSC_EIM_WIDTH 5
20
21struct gsc_irq {
22	unsigned long txn_addr;	/* IRQ "target" */
23	int txn_data;		/* HW "IRQ" */
24	int irq;		/* virtual IRQ */
25};
26
27struct gsc_asic {
28	struct parisc_device *gsc;
29	unsigned long hpa;
30	char *name;
31	int version;
32	int type;
33	int eim;
34	int global_irq[32];
35};
36
37int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic);
38int gsc_alloc_irq(struct gsc_irq *dev);			/* dev needs an irq */
39int gsc_claim_irq(struct gsc_irq *dev, int irq);	/* dev needs this irq */
40int gsc_assign_irq(struct irq_chip *type, void *data);
41int gsc_find_local_irq(unsigned int irq, int *global_irq, int limit);
42void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl,
43		void (*choose)(struct parisc_device *child, void *ctrl));
44void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp);
45
46irqreturn_t gsc_asic_intr(int irq, void *dev);