1/*
2 * Copyright (c) International Business Machines  Corp., 2001
3 * Copyright (c) 2013 Oracle and/or its affiliates. All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of
8 * the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it would be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write the Free Software Foundation,
17 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18 *
19 * In this header file keep all flags and other
20 * structures that will be needed in both kernel
21 * and user space. Specifically the ioctl flags
22 * will go in here so that in user space a program
23 * can specify flags for the ioctl call.
24 *
25 *  HISTORY     :
26 *      11/19/2003 Kai Zhao (ltcd3@cn.ibm.com)
27 *
28 *  CODE COVERAGE: 74.9% - fs/bio.c (Total Coverage)
29 *
30 */
31
32#define TMOD_DRIVER_NAME	"ltp test block I/O layer module"
33#define TBIO_DEVICE_NAME	"ltp_tbio"
34#define DEVICE_NAME		"/dev/tbio"
35#define MAG_NUM			'k'
36int TBIO_MAJOR;
37
38#define TBIO_TO_DEV              1
39#define TBIO_FROM_DEV            2
40
41/* put ioctl flags here, use the _IO macro which is
42 found in linux/ioctl.h, takes a letter, and an
43 integer */
44
45#define LTP_TBIO_CLONE		_IO(MAG_NUM,1)
46#define LTP_TBIO_ALLOC		_IO(MAG_NUM,2)
47#define LTP_TBIO_GET_NR_VECS	_IO(MAG_NUM,3)
48#define LTP_TBIO_PUT		_IO(MAG_NUM,4)
49#define LTP_TBIO_SPLIT		_IO(MAG_NUM,5)
50#define LTP_TBIO_DO_IO		_IO(MAG_NUM,6)
51#define LTP_TBIO_ADD_PAGE	_IO(MAG_NUM,7)
52
53/* memory between the kernel and user space is
54 seperated, so that if a structure is needed
55 to be passed between kernel and user space
56 a call must be made to copy_to_user or copy
57 from user. Use this structure to streamline
58 that process. For example: A function that
59 writes to a disc takes in a ki_write_t
60 pointer from userspace. In the user space
61 program specify the length of the pointer as
62 in_len, and in_data as the actual structure. */
63
64struct tbio_interface {
65	void *data;	/* input data */
66	int data_len;	/* input data length */
67	int direction;	/* read or write form DEV */
68	char *cmd;	/* read or write */
69	unsigned short cmd_len;	/* length of cmd */
70};
71typedef struct tbio_interface tbio_interface_t;
72