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 * $FreeBSD$ 30 */ 31 #ifndef _LINUX_INTERRUPT_H_ 32 #define _LINUX_INTERRUPT_H_ 33 34 #include <linux/cpu.h> 35 #include <linux/device.h> 36 #include <linux/pci.h> 37 #include <linux/irqreturn.h> 38 #include <linux/hardirq.h> 39 40 #include <sys/param.h> 41 #include <sys/interrupt.h> 42 43 typedef irqreturn_t (*irq_handler_t)(int, void *); 44 45 #define IRQF_SHARED RF_SHAREABLE 46 47 struct irq_ent; 48 49 void linux_irq_handler(void *); 50 void lkpi_devm_irq_release(struct device *, void *); 51 void lkpi_irq_release(struct device *, struct irq_ent *); 52 int lkpi_request_irq(struct device *, unsigned int, irq_handler_t, 53 irq_handler_t, unsigned long, const char *, void *); 54 int lkpi_enable_irq(unsigned int); 55 void lkpi_disable_irq(unsigned int); 56 int lkpi_bind_irq_to_cpu(unsigned int, int); 57 void lkpi_free_irq(unsigned int, void *); 58 void lkpi_devm_free_irq(struct device *, unsigned int, void *); 59 60 static inline int 61 request_irq(unsigned int irq, irq_handler_t handler, unsigned long flags, 62 const char *name, void *arg) 63 { 64 65 return (lkpi_request_irq(NULL, irq, handler, NULL, flags, name, arg)); 66 } 67 68 static inline int 69 request_threaded_irq(int irq, irq_handler_t handler, 70 irq_handler_t thread_handler, unsigned long flags, 71 const char *name, void *arg) 72 { 73 74 return (lkpi_request_irq(NULL, irq, handler, thread_handler, 75 flags, name, arg)); 76 } 77 78 static inline int 79 devm_request_threaded_irq(struct device *dev, int irq, 80 irq_handler_t handler, irq_handler_t thread_handler, 81 unsigned long flags, const char *name, void *arg) 82 { 83 84 return (lkpi_request_irq(dev, irq, handler, thread_handler, 85 flags, name, arg)); 86 } 87 88 static inline int 89 enable_irq(unsigned int irq) 90 { 91 return (lkpi_enable_irq(irq)); 92 } 93 94 static inline void 95 disable_irq(unsigned int irq) 96 { 97 lkpi_disable_irq(irq); 98 } 99 100 static inline int 101 bind_irq_to_cpu(unsigned int irq, int cpu_id) 102 { 103 return (lkpi_bind_irq_to_cpu(irq, cpu_id)); 104 } 105 106 static inline void 107 free_irq(unsigned int irq, void *device) 108 { 109 lkpi_free_irq(irq, device); 110 } 111 112 static inline void 113 devm_free_irq(struct device *xdev, unsigned int irq, void *p) 114 { 115 lkpi_devm_free_irq(xdev, irq, p); 116 } 117 118 static inline int 119 irq_set_affinity_hint(int vector, cpumask_t *mask) 120 { 121 int error; 122 123 if (mask != NULL) 124 error = intr_setaffinity(vector, CPU_WHICH_IRQ, mask); 125 else 126 error = intr_setaffinity(vector, CPU_WHICH_IRQ, cpuset_root); 127 128 return (-error); 129 } 130 131 /* 132 * LinuxKPI tasklet support 133 */ 134 typedef void tasklet_func_t(unsigned long); 135 136 struct tasklet_struct { 137 TAILQ_ENTRY(tasklet_struct) entry; 138 tasklet_func_t *func; 139 /* Our "state" implementation is different. Avoid same name as Linux. */ 140 volatile u_int tasklet_state; 141 atomic_t count; 142 unsigned long data; 143 }; 144 145 #define DECLARE_TASKLET(_name, _func, _data) \ 146 struct tasklet_struct _name = { .func = (_func), .data = (_data) } 147 148 #define tasklet_hi_schedule(t) tasklet_schedule(t) 149 150 extern void tasklet_schedule(struct tasklet_struct *); 151 extern void tasklet_kill(struct tasklet_struct *); 152 extern void tasklet_init(struct tasklet_struct *, tasklet_func_t *, 153 unsigned long data); 154 extern void tasklet_enable(struct tasklet_struct *); 155 extern void tasklet_disable(struct tasklet_struct *); 156 extern void tasklet_disable_nosync(struct tasklet_struct *); 157 extern int tasklet_trylock(struct tasklet_struct *); 158 extern void tasklet_unlock(struct tasklet_struct *); 159 extern void tasklet_unlock_wait(struct tasklet_struct *ts); 160 161 #endif /* _LINUX_INTERRUPT_H_ */ 162