interrupt.h revision 328653
1219820Sjeff/*- 2219820Sjeff * Copyright (c) 2010 Isilon Systems, Inc. 3219820Sjeff * Copyright (c) 2010 iX Systems, Inc. 4219820Sjeff * Copyright (c) 2010 Panasas, Inc. 5290003Shselasky * Copyright (c) 2013-2015 Mellanox Technologies, Ltd. 6219820Sjeff * All rights reserved. 7219820Sjeff * 8219820Sjeff * Redistribution and use in source and binary forms, with or without 9219820Sjeff * modification, are permitted provided that the following conditions 10219820Sjeff * are met: 11219820Sjeff * 1. Redistributions of source code must retain the above copyright 12219820Sjeff * notice unmodified, this list of conditions, and the following 13219820Sjeff * disclaimer. 14219820Sjeff * 2. Redistributions in binary form must reproduce the above copyright 15219820Sjeff * notice, this list of conditions and the following disclaimer in the 16219820Sjeff * documentation and/or other materials provided with the distribution. 17219820Sjeff * 18219820Sjeff * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19219820Sjeff * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20219820Sjeff * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21219820Sjeff * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22219820Sjeff * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23219820Sjeff * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24219820Sjeff * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25219820Sjeff * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26219820Sjeff * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27219820Sjeff * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28289644Shselasky * 29289644Shselasky * $FreeBSD: stable/11/sys/compat/linuxkpi/common/include/linux/interrupt.h 328653 2018-02-01 13:01:44Z hselasky $ 30219820Sjeff */ 31219820Sjeff#ifndef _LINUX_INTERRUPT_H_ 32219820Sjeff#define _LINUX_INTERRUPT_H_ 33219820Sjeff 34219820Sjeff#include <linux/device.h> 35219820Sjeff#include <linux/pci.h> 36219820Sjeff 37219820Sjeff#include <sys/bus.h> 38219820Sjeff#include <sys/rman.h> 39219820Sjeff 40219820Sjefftypedef irqreturn_t (*irq_handler_t)(int, void *); 41219820Sjeff 42219820Sjeff#define IRQ_RETVAL(x) ((x) != IRQ_NONE) 43219820Sjeff 44219820Sjeff#define IRQF_SHARED RF_SHAREABLE 45219820Sjeff 46219820Sjeffstruct irq_ent { 47219820Sjeff struct list_head links; 48219820Sjeff struct device *dev; 49219820Sjeff struct resource *res; 50219820Sjeff void *arg; 51219820Sjeff irqreturn_t (*handler)(int, void *); 52219820Sjeff void *tag; 53310250Shselasky unsigned int irq; 54219820Sjeff}; 55219820Sjeff 56219820Sjeffstatic inline int 57310250Shselaskylinux_irq_rid(struct device *dev, unsigned int irq) 58219820Sjeff{ 59219820Sjeff if (irq == dev->irq) 60219820Sjeff return (0); 61219820Sjeff return irq - dev->msix + 1; 62219820Sjeff} 63219820Sjeff 64293419Shselaskyextern void linux_irq_handler(void *); 65219820Sjeff 66219820Sjeffstatic inline struct irq_ent * 67310250Shselaskylinux_irq_ent(struct device *dev, unsigned int irq) 68219820Sjeff{ 69219820Sjeff struct irq_ent *irqe; 70219820Sjeff 71219820Sjeff list_for_each_entry(irqe, &dev->irqents, links) 72219820Sjeff if (irqe->irq == irq) 73219820Sjeff return (irqe); 74219820Sjeff 75219820Sjeff return (NULL); 76219820Sjeff} 77219820Sjeff 78219820Sjeffstatic inline int 79219820Sjeffrequest_irq(unsigned int irq, irq_handler_t handler, unsigned long flags, 80219820Sjeff const char *name, void *arg) 81219820Sjeff{ 82219820Sjeff struct resource *res; 83219820Sjeff struct irq_ent *irqe; 84219820Sjeff struct device *dev; 85219820Sjeff int error; 86219820Sjeff int rid; 87219820Sjeff 88310250Shselasky dev = linux_pci_find_irq_dev(irq); 89219820Sjeff if (dev == NULL) 90219820Sjeff return -ENXIO; 91293419Shselasky rid = linux_irq_rid(dev, irq); 92219820Sjeff res = bus_alloc_resource_any(dev->bsddev, SYS_RES_IRQ, &rid, 93219820Sjeff flags | RF_ACTIVE); 94219820Sjeff if (res == NULL) 95219820Sjeff return (-ENXIO); 96219820Sjeff irqe = kmalloc(sizeof(*irqe), GFP_KERNEL); 97219820Sjeff irqe->dev = dev; 98219820Sjeff irqe->res = res; 99219820Sjeff irqe->arg = arg; 100219820Sjeff irqe->handler = handler; 101219820Sjeff irqe->irq = irq; 102219820Sjeff error = bus_setup_intr(dev->bsddev, res, INTR_TYPE_NET | INTR_MPSAFE, 103293419Shselasky NULL, linux_irq_handler, irqe, &irqe->tag); 104219820Sjeff if (error) { 105219820Sjeff bus_release_resource(dev->bsddev, SYS_RES_IRQ, rid, irqe->res); 106219820Sjeff kfree(irqe); 107219820Sjeff return (-error); 108219820Sjeff } 109219820Sjeff list_add(&irqe->links, &dev->irqents); 110219820Sjeff 111219820Sjeff return 0; 112219820Sjeff} 113219820Sjeff 114290003Shselaskystatic inline int 115290003Shselaskybind_irq_to_cpu(unsigned int irq, int cpu_id) 116290003Shselasky{ 117290003Shselasky struct irq_ent *irqe; 118290003Shselasky struct device *dev; 119290003Shselasky 120310250Shselasky dev = linux_pci_find_irq_dev(irq); 121290003Shselasky if (dev == NULL) 122290003Shselasky return (-ENOENT); 123290003Shselasky 124293419Shselasky irqe = linux_irq_ent(dev, irq); 125290003Shselasky if (irqe == NULL) 126290003Shselasky return (-ENOENT); 127290003Shselasky 128290003Shselasky return (-bus_bind_intr(dev->bsddev, irqe->res, cpu_id)); 129290003Shselasky} 130290003Shselasky 131219820Sjeffstatic inline void 132219820Sjefffree_irq(unsigned int irq, void *device) 133219820Sjeff{ 134219820Sjeff struct irq_ent *irqe; 135219820Sjeff struct device *dev; 136219820Sjeff int rid; 137219820Sjeff 138310250Shselasky dev = linux_pci_find_irq_dev(irq); 139219820Sjeff if (dev == NULL) 140219820Sjeff return; 141293419Shselasky rid = linux_irq_rid(dev, irq); 142293419Shselasky irqe = linux_irq_ent(dev, irq); 143219820Sjeff if (irqe == NULL) 144219820Sjeff return; 145219820Sjeff bus_teardown_intr(dev->bsddev, irqe->res, irqe->tag); 146219820Sjeff bus_release_resource(dev->bsddev, SYS_RES_IRQ, rid, irqe->res); 147219820Sjeff list_del(&irqe->links); 148219820Sjeff kfree(irqe); 149219820Sjeff} 150219820Sjeff 151328653Shselasky/* 152328653Shselasky * LinuxKPI tasklet support 153328653Shselasky */ 154328653Shselaskytypedef void tasklet_func_t(unsigned long); 155328653Shselasky 156328653Shselaskystruct tasklet_struct { 157328653Shselasky TAILQ_ENTRY(tasklet_struct) entry; 158328653Shselasky tasklet_func_t *func; 159328653Shselasky unsigned long data; 160328653Shselasky}; 161328653Shselasky 162328653Shselasky#define DECLARE_TASKLET(name, func, data) \ 163328653Shselaskystruct tasklet_struct name = { { NULL, NULL }, func, data } 164328653Shselasky 165328653Shselasky#define tasklet_hi_schedule(t) tasklet_schedule(t) 166328653Shselasky 167328653Shselaskyextern void tasklet_schedule(struct tasklet_struct *); 168328653Shselaskyextern void tasklet_kill(struct tasklet_struct *); 169328653Shselaskyextern void tasklet_init(struct tasklet_struct *, tasklet_func_t *, 170328653Shselasky unsigned long data); 171328653Shselasky 172219820Sjeff#endif /* _LINUX_INTERRUPT_H_ */ 173