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 _LINUXKPI_LINUX_INTERRUPT_H_ 32 #define _LINUXKPI_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 #define IRQF_NOBALANCING 0 47 48 #define IRQ_DISABLE_UNLAZY 0 49 50 #define IRQ_NOTCONNECTED (1U << 31) 51 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_irq(struct device *dev, int irq, 80 irq_handler_t handler, unsigned long flags, const char *name, void *arg) 81 { 82 83 return (lkpi_request_irq(dev, irq, handler, NULL, flags, name, arg)); 84 } 85 86 static inline int 87 devm_request_threaded_irq(struct device *dev, int irq, 88 irq_handler_t handler, irq_handler_t thread_handler, 89 unsigned long flags, const char *name, void *arg) 90 { 91 92 return (lkpi_request_irq(dev, irq, handler, thread_handler, 93 flags, name, arg)); 94 } 95 96 static inline int 97 enable_irq(unsigned int irq) 98 { 99 return (lkpi_enable_irq(irq)); 100 } 101 102 static inline void 103 disable_irq(unsigned int irq) 104 { 105 lkpi_disable_irq(irq); 106 } 107 108 static inline void 109 disable_irq_nosync(unsigned int irq) 110 { 111 lkpi_disable_irq(irq); 112 } 113 114 static inline int 115 bind_irq_to_cpu(unsigned int irq, int cpu_id) 116 { 117 return (lkpi_bind_irq_to_cpu(irq, cpu_id)); 118 } 119 120 static inline void 121 free_irq(unsigned int irq, void *device) 122 { 123 lkpi_free_irq(irq, device); 124 } 125 126 static inline void 127 devm_free_irq(struct device *xdev, unsigned int irq, void *p) 128 { 129 lkpi_devm_free_irq(xdev, irq, p); 130 } 131 132 static inline int 133 irq_set_affinity_hint(int vector, const cpumask_t *mask) 134 { 135 int error; 136 137 if (mask != NULL) 138 error = intr_setaffinity(vector, CPU_WHICH_IRQ, __DECONST(cpumask_t *, mask)); 139 else 140 error = intr_setaffinity(vector, CPU_WHICH_IRQ, cpuset_root); 141 142 return (-error); 143 } 144 145 static inline struct msi_desc * 146 irq_get_msi_desc(unsigned int irq) 147 { 148 149 return (lkpi_pci_msi_desc_alloc(irq)); 150 } 151 152 static inline void 153 irq_set_status_flags(unsigned int irq __unused, unsigned long flags __unused) 154 { 155 } 156 157 /* 158 * LinuxKPI tasklet support 159 */ 160 struct tasklet_struct; 161 typedef void tasklet_func_t(unsigned long); 162 typedef void tasklet_callback_t(struct tasklet_struct *); 163 164 struct tasklet_struct { 165 TAILQ_ENTRY(tasklet_struct) entry; 166 tasklet_func_t *func; 167 /* Our "state" implementation is different. Avoid same name as Linux. */ 168 volatile u_int tasklet_state; 169 atomic_t count; 170 unsigned long data; 171 tasklet_callback_t *callback; 172 bool use_callback; 173 }; 174 175 #define DECLARE_TASKLET(_name, _func, _data) \ 176 struct tasklet_struct _name = { .func = (_func), .data = (_data) } 177 178 #define tasklet_hi_schedule(t) tasklet_schedule(t) 179 180 /* Some other compat code in the tree has this defined as well. */ 181 #define from_tasklet(_dev, _t, _field) \ 182 container_of(_t, typeof(*(_dev)), _field) 183 184 void tasklet_setup(struct tasklet_struct *, tasklet_callback_t *); 185 extern void tasklet_schedule(struct tasklet_struct *); 186 extern void tasklet_kill(struct tasklet_struct *); 187 extern void tasklet_init(struct tasklet_struct *, tasklet_func_t *, 188 unsigned long data); 189 extern void tasklet_enable(struct tasklet_struct *); 190 extern void tasklet_disable(struct tasklet_struct *); 191 extern void tasklet_disable_nosync(struct tasklet_struct *); 192 extern int tasklet_trylock(struct tasklet_struct *); 193 extern void tasklet_unlock(struct tasklet_struct *); 194 extern void tasklet_unlock_wait(struct tasklet_struct *ts); 195 #define tasklet_unlock_spin_wait(ts) tasklet_unlock_wait(ts) 196 197 #endif /* _LINUXKPI_LINUX_INTERRUPT_H_ */ 198