1 /*
2 * Copyright 2010 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 * Provide methods for the HARDWALL_FILE for accessing the UDN.
15 */
16
17 #ifndef _ASM_TILE_HARDWALL_H
18 #define _ASM_TILE_HARDWALL_H
19
20 #include <linux/ioctl.h>
21
22 #define HARDWALL_IOCTL_BASE 0xa2
23
24 /*
25 * The HARDWALL_CREATE() ioctl is a macro with a "size" argument.
26 * The resulting ioctl value is passed to the kernel in conjunction
27 * with a pointer to a little-endian bitmask of cpus, which must be
28 * physically in a rectangular configuration on the chip.
29 * The "size" is the number of bytes of cpu mask data.
30 */
31 #define _HARDWALL_CREATE 1
32 #define HARDWALL_CREATE(size) \
33 _IOC(_IOC_READ, HARDWALL_IOCTL_BASE, _HARDWALL_CREATE, (size))
34
35 #define _HARDWALL_ACTIVATE 2
36 #define HARDWALL_ACTIVATE \
37 _IO(HARDWALL_IOCTL_BASE, _HARDWALL_ACTIVATE)
38
39 #define _HARDWALL_DEACTIVATE 3
40 #define HARDWALL_DEACTIVATE \
41 _IO(HARDWALL_IOCTL_BASE, _HARDWALL_DEACTIVATE)
42
43 #define _HARDWALL_GET_ID 4
44 #define HARDWALL_GET_ID \
45 _IO(HARDWALL_IOCTL_BASE, _HARDWALL_GET_ID)
46
47 #ifndef __KERNEL__
48
49 /* This is the canonical name expected by userspace. */
50 #define HARDWALL_FILE "/dev/hardwall"
51
52 #else
53
54 /* /proc hooks for hardwall. */
55 struct proc_dir_entry;
56 #ifdef CONFIG_HARDWALL
57 void proc_tile_hardwall_init(struct proc_dir_entry *root);
58 int proc_pid_hardwall(struct task_struct *task, char *buffer);
59 #else
proc_tile_hardwall_init(struct proc_dir_entry * root)60 static inline void proc_tile_hardwall_init(struct proc_dir_entry *root) {}
61 #endif
62
63 #endif
64
65 #endif /* _ASM_TILE_HARDWALL_H */
66