[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / tile / gxio / trio.c

/*
 * 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);
Commit	Line	Data
bce5bbbb CM	1	/*
	2	* Copyright 2012 Tilera Corporation. All Rights Reserved.
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation, version 2.
	7	*
	8	* This program is distributed in the hope that it will be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
	11	* NON INFRINGEMENT. See the GNU General Public License for
	12	* more details.
	13	*/
	14
	15	/*
	16	* Implementation of trio gxio calls.
	17	*/
	18
	19	#include <linux/errno.h>
	20	#include <linux/io.h>
	21	#include <linux/module.h>
	22
	23	#include <gxio/trio.h>
	24	#include <gxio/iorpc_globals.h>
	25	#include <gxio/iorpc_trio.h>
	26	#include <gxio/kiorpc.h>
	27
	28	int gxio_trio_init(gxio_trio_context_t *context, unsigned int trio_index)
	29	{
	30	char file[32];
	31	int fd;
	32
	33	snprintf(file, sizeof(file), "trio/%d/iorpc", trio_index);
	34	fd = hv_dev_open((HV_VirtAddr) file, 0);
	35	if (fd < 0) {
	36	context->fd = -1;
	37
	38	if (fd >= GXIO_ERR_MIN && fd <= GXIO_ERR_MAX)
	39	return fd;
	40	else
	41	return -ENODEV;
	42	}
	43
	44	context->fd = fd;
	45
	46	return 0;
	47	}
	48
	49	EXPORT_SYMBOL_GPL(gxio_trio_init);