/*
* Copyright (c) 2014 Jiri Svoboda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup libdevice
* @{
*/
/** @file
*/
#include <assert.h>
#include <async.h>
#include <errno.h>
#include <fibril.h>
#include <ipc/irc.h>
#include <ipc/services.h>
#include <irc.h>
#include <loc.h>
#include <stdlib.h>
#include <sysinfo.h>
static async_sess_t *irc_sess;
/** Connect to IRC service.
*
* @return EOK on success, EIO on failure
*/
static errno_t irc_init(void)
{
category_id_t irc_cat;
service_id_t *svcs;
size_t count;
errno_t rc;
assert(irc_sess == NULL);
rc = loc_category_get_id("irc", &irc_cat, IPC_FLAG_BLOCKING);
if (rc != EOK)
return EIO;
while (true) {
rc = loc_category_get_svcs(irc_cat, &svcs, &count);
if (rc != EOK)
return EIO;
if (count > 0)
break;
free(svcs);
// XXX This is just a temporary hack
fibril_usleep(500 * 1000);
}
irc_sess = loc_service_connect(svcs[0], INTERFACE_IRC,
IPC_FLAG_BLOCKING);
free(svcs);
if (irc_sess == NULL)
return EIO;
return EOK;
}
/** Enable interrupt.
*
* Allow interrupt delivery.
*
* @param irq IRQ number
*/
errno_t irc_enable_interrupt(int irq)
{
errno_t rc;
if (irc_sess == NULL) {
rc = irc_init();
if (rc != EOK)
return rc;
}
async_exch_t *exch = async_exchange_begin(irc_sess);
rc = async_req_1_0(exch, IRC_ENABLE_INTERRUPT, irq);
async_exchange_end(exch);
return rc;
}
/** Disable interrupt.
*
* Disallow interrupt delivery.
*
* @param irq IRQ number
*/
errno_t irc_disable_interrupt(int irq)
{
errno_t rc;
if (irc_sess == NULL) {
rc = irc_init();
if (rc != EOK)
return rc;
}
async_exch_t *exch = async_exchange_begin(irc_sess);
rc = async_req_1_0(exch, IRC_DISABLE_INTERRUPT, irq);
async_exchange_end(exch);
return rc;
}
/** Clear interrupt.
*
* Clear/acknowledge interrupt in interrupt controller so that
* another interrupt can be delivered.
*
* @param irq IRQ number
*/
errno_t irc_clear_interrupt(int irq)
{
errno_t rc;
if (irc_sess == NULL) {
rc = irc_init();
if (rc != EOK)
return rc;
}
async_exch_t *exch = async_exchange_begin(irc_sess);
rc = async_req_1_0(exch, IRC_CLEAR_INTERRUPT, irq);
async_exchange_end(exch);
return rc;
}
/** @}
*/