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/*
* Copyright 2013 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#include <core/device.h>
#include <core/client.h>
#include "priv.h"
struct os_intr {
struct list_head head;
pthread_t thread;
irq_handler_t handler;
int irq;
void *dev;
};
static DEFINE_MUTEX(os_intr_mutex);
static LIST_HEAD(os_intr_list);
static void *
os_intr(void *arg)
{
struct os_intr *intr = arg;
while (1) {
intr->handler(intr->irq, intr->dev);
usleep(10000);
}
return NULL;
}
int
os_intr_init(unsigned int irq, irq_handler_t handler, unsigned long flags,
const char *name, void *dev)
{
struct os_intr *intr = malloc(sizeof(*intr));
if (!intr)
return -ENOMEM;
intr->handler = handler;
intr->irq = irq;
intr->dev = dev;
mutex_lock(&os_intr_mutex);
list_add(&intr->head, &os_intr_list);
mutex_unlock(&os_intr_mutex);
pthread_create(&intr->thread, NULL, os_intr, intr);
return 0;
}
void
os_intr_free(unsigned int irq, void *dev)
{
struct os_intr *intr;
mutex_lock(&os_intr_mutex);
list_for_each_entry(intr, &os_intr_list, head) {
if (intr->irq == irq && intr->dev == dev) {
pthread_cancel(intr->thread);
pthread_join(intr->thread, NULL);
list_del(&intr->head);
mutex_unlock(&os_intr_mutex);
free(intr);
return;
}
}
mutex_unlock(&os_intr_mutex);
}
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