trio.c
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/*
* Copyright 2012 Tilera Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
/*
* Implementation of trio gxio calls.
*/
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/module.h>
#include <gxio/trio.h>
#include <gxio/iorpc_globals.h>
#include <gxio/iorpc_trio.h>
#include <gxio/kiorpc.h>
int gxio_trio_init(gxio_trio_context_t *context, unsigned int trio_index)
{
char file[32];
int fd;
snprintf(file, sizeof(file), "trio/%d/iorpc", trio_index);
fd = hv_dev_open((HV_VirtAddr) file, 0);
if (fd < 0) {
context->fd = -1;
if (fd >= GXIO_ERR_MIN && fd <= GXIO_ERR_MAX)
return fd;
else
return -ENODEV;
}
context->fd = fd;
return 0;
}
EXPORT_SYMBOL_GPL(gxio_trio_init);