blob: 69f0b8df3ce3aec8be4c52f0024cced8c0801092 [file] [log] [blame]
Chris Metcalfbce5bbb2012-04-07 16:53:03 -04001/*
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
28int 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
49EXPORT_SYMBOL_GPL(gxio_trio_init);