1/*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013-2015 Mellanox Technologies, Ltd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice unmodified, this list of conditions, and the following
13 *    disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29#ifndef	_LINUXKPI_LINUX_INTERRUPT_H_
30#define	_LINUXKPI_LINUX_INTERRUPT_H_
31
32#include "linux/kernel.h"
33#include "los_base.h"
34#include "linux/workqueue.h"
35
36#ifdef __cplusplus
37#if __cplusplus
38extern "C" {
39#endif /* __cplusplus */
40#endif /* __cplusplus */
41
42#define IRQ_RETVAL(x)    ((x) != IRQ_NONE)
43
44/**
45 * These correspond to the IORESOURCE_IRQ_* defines in
46 * linux/ioport.h to select the interrupt line behaviour.
47 */
48#define IRQF_TRIGGER_LOW      0x00000008
49#define IRQF_TRIGGER_HIGH     0x00000004
50#define IRQF_TRIGGER_FALLING  0x00000002
51#define IRQF_TRIGGER_RISING   0x00000001
52#define IRQF_TRIGGER_NONE     0x00000000
53#define IRQF_TRIGGER_MASK     (IRQF_TRIGGER_HIGH | IRQF_TRIGGER_LOW | \
54                               IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)
55#define IRQF_PROBE_SHARED     0x00000100
56
57#define IRQ_DEFAULT_PRIORITY  0x0
58
59typedef enum irqreturn {
60    IRQ_NONE        = (0U << 0),  /* interrupt was not from this device. */
61    IRQ_HANDLED     = (1U << 0),  /* interrupt was handled by this device. */
62    IRQ_WAKE_THREAD = (1U << 1)   /* handler requests to wake the handler thread. */
63} irqreturn_t;
64
65typedef irqreturn_t (*irq_handler_t)(int, void *);
66typedef void (*irq_bottom_half_handler_t)(struct work_struct *);
67
68typedef struct irq_args {
69    int         iIrq;
70    void        *pDevId;
71    const char  *pName;
72} irq_args;
73
74#define request_irq(irq, handler, flags, name, dev) \
75    linux_request_irq(irq, handler, flags, name, dev)
76
77#define free_irq(irq, dev_id) \
78    linux_free_irq(irq, dev_id)
79
80#define enable_irq(irq) \
81    linux_enable_irq(irq)
82
83#define disable_irq(irq) \
84    linux_disable_irq(irq)
85
86extern int linux_request_irq(unsigned int irq, irq_handler_t handler, unsigned long flags,
87                const char *name, void *dev);
88extern void linux_free_irq(unsigned int irq, void *dev_id);
89extern void linux_enable_irq(unsigned int irq);
90extern void linux_disable_irq(unsigned int irq);
91
92#ifdef WORKQUEUE_SUPPORT_PRIORITY
93extern bool irq_bottom_half(struct workqueue_struct *workQueue, irq_bottom_half_handler_t handler, void *data,
94                     unsigned int pri);
95#else
96extern bool irq_bottom_half(struct workqueue_struct *workQueue, irq_bottom_half_handler_t handler, void *data);
97#endif
98
99#ifdef __cplusplus
100#if __cplusplus
101}
102#endif /* __cplusplus */
103#endif /* __cplusplus */
104
105#endif /* _LINUXKPI_LINUX_INTERRUPT_H_ */
106