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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); |