xref: /openbmc/linux/arch/xtensa/include/uapi/asm/shmbuf.h (revision 12eb4683)
1 /*
2  * include/asm-xtensa/shmbuf.h
3  *
4  * The shmid64_ds structure for Xtensa architecture.
5  * Note extra padding because this structure is passed back and forth
6  * between kernel and user space.
7  *
8  * Pad space is left for:
9  * - 64-bit time_t to solve y2038 problem
10  * - 2 miscellaneous 32-bit values
11  *
12  * This file is subject to the terms and conditions of the GNU General Public
13  * License.  See the file "COPYING" in the main directory of this archive
14  * for more details.
15  *
16  * Copyright (C) 2001 - 2005 Tensilica Inc.
17  */
18 
19 #ifndef _XTENSA_SHMBUF_H
20 #define _XTENSA_SHMBUF_H
21 
22 #if defined (__XTENSA_EL__)
23 struct shmid64_ds {
24 	struct ipc64_perm	shm_perm;	/* operation perms */
25 	size_t			shm_segsz;	/* size of segment (bytes) */
26 	__kernel_time_t		shm_atime;	/* last attach time */
27 	unsigned long		__unused1;
28 	__kernel_time_t		shm_dtime;	/* last detach time */
29 	unsigned long		__unused2;
30 	__kernel_time_t		shm_ctime;	/* last change time */
31 	unsigned long		__unused3;
32 	__kernel_pid_t		shm_cpid;	/* pid of creator */
33 	__kernel_pid_t		shm_lpid;	/* pid of last operator */
34 	unsigned long		shm_nattch;	/* no. of current attaches */
35 	unsigned long		__unused4;
36 	unsigned long		__unused5;
37 };
38 #elif defined (__XTENSA_EB__)
39 struct shmid64_ds {
40 	struct ipc64_perm	shm_perm;	/* operation perms */
41 	size_t			shm_segsz;	/* size of segment (bytes) */
42 	__kernel_time_t		shm_atime;	/* last attach time */
43 	unsigned long		__unused1;
44 	__kernel_time_t		shm_dtime;	/* last detach time */
45 	unsigned long		__unused2;
46 	__kernel_time_t		shm_ctime;	/* last change time */
47 	unsigned long		__unused3;
48 	__kernel_pid_t		shm_cpid;	/* pid of creator */
49 	__kernel_pid_t		shm_lpid;	/* pid of last operator */
50 	unsigned long		shm_nattch;	/* no. of current attaches */
51 	unsigned long		__unused4;
52 	unsigned long		__unused5;
53 };
54 #else
55 # error endian order not defined
56 #endif
57 
58 
59 struct shminfo64 {
60 	unsigned long	shmmax;
61 	unsigned long	shmmin;
62 	unsigned long	shmmni;
63 	unsigned long	shmseg;
64 	unsigned long	shmall;
65 	unsigned long	__unused1;
66 	unsigned long	__unused2;
67 	unsigned long	__unused3;
68 	unsigned long	__unused4;
69 };
70 
71 #endif	/* _XTENSA_SHMBUF_H */
72