1 /*
2 * Copyright (c) 2013 Corey Tabaka
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files
6 * (the "Software"), to deal in the Software without restriction,
7 * including without limitation the rights to use, copy, modify, merge,
8 * publish, distribute, sublicense, and/or sell copies of the Software,
9 * and to permit persons to whom the Software is furnished to do so,
10 * subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24 #include <err.h>
25 #include <dev/class/block.h>
26
class_block_get_size(struct device * dev)27 ssize_t class_block_get_size(struct device *dev)
28 {
29 struct block_ops *ops = device_get_driver_ops(dev, struct block_ops, std);
30 if (!ops)
31 return ERR_NOT_CONFIGURED;
32
33 if (ops->get_block_size)
34 return ops->get_block_size(dev);
35 else
36 return ERR_NOT_SUPPORTED;
37 }
38
class_block_get_count(struct device * dev)39 ssize_t class_block_get_count(struct device *dev)
40 {
41 struct block_ops *ops = device_get_driver_ops(dev, struct block_ops, std);
42 if (!ops)
43 return ERR_NOT_CONFIGURED;
44
45 if (ops->get_block_count)
46 return ops->get_block_count(dev);
47 else
48 return ERR_NOT_SUPPORTED;
49 }
50
class_block_write(struct device * dev,off_t offset,const void * buf,size_t count)51 ssize_t class_block_write(struct device *dev, off_t offset, const void *buf, size_t count)
52 {
53 struct block_ops *ops = device_get_driver_ops(dev, struct block_ops, std);
54 if (!ops)
55 return ERR_NOT_CONFIGURED;
56
57 if (ops->write)
58 return ops->write(dev, offset, buf, count);
59 else
60 return ERR_NOT_SUPPORTED;
61 }
62
class_block_read(struct device * dev,off_t offset,void * buf,size_t count)63 ssize_t class_block_read(struct device *dev, off_t offset, void *buf, size_t count)
64 {
65 struct block_ops *ops = device_get_driver_ops(dev, struct block_ops, std);
66 if (!ops)
67 return ERR_NOT_CONFIGURED;
68
69 if (ops->read)
70 return ops->read(dev, offset, buf, count);
71 else
72 return ERR_NOT_SUPPORTED;
73 }
74
class_block_flush(struct device * dev)75 status_t class_block_flush(struct device *dev)
76 {
77 struct block_ops *ops = device_get_driver_ops(dev, struct block_ops, std);
78 if (!ops)
79 return ERR_NOT_CONFIGURED;
80
81 if (ops->flush)
82 return ops->flush(dev);
83 else
84 return ERR_NOT_SUPPORTED;
85 }
86
87