2 * Copyright (C) 2010 ARM Limited. All rights reserved.
4 * This program is free software and is provided to you under the terms of the GNU General Public License version 2
5 * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
7 * A copy of the licence is included with the program, and can also be obtained from Free Software
8 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
12 * @file ump_uk_types.h
13 * Defines the types and constants used in the user-kernel interface
16 #ifndef __UMP_UK_TYPES_H__
17 #define __UMP_UK_TYPES_H__
24 /* Helpers for API version handling */
25 #define MAKE_VERSION_ID(x) (((x) << 16UL) | (x))
26 #define IS_VERSION_ID(x) (((x) & 0xFFFF) == (((x) >> 16UL) & 0xFFFF))
27 #define GET_VERSION(x) (((x) >> 16UL) & 0xFFFF)
28 #define IS_API_MATCH(x, y) (IS_VERSION_ID((x)) && IS_VERSION_ID((y)) && (GET_VERSION((x)) == GET_VERSION((y))))
32 * Indicates the version of the kernel API
33 * The version is a 16bit integer incremented on each API change.
34 * The 16bit integer is stored twice in a 32bit integer
35 * So for version 1 the value would be 0x00010001
37 #define UMP_IOCTL_API_VERSION MAKE_VERSION_ID(2)
41 _UMP_IOC_QUERY_API_VERSION = 1,
45 _UMP_IOC_MAP_MEM, /* not used in Linux */
46 _UMP_IOC_UNMAP_MEM, /* not used in Linux */
52 UMP_REF_DRV_UK_CONSTRAINT_NONE = 0,
53 UMP_REF_DRV_UK_CONSTRAINT_PHYSICALLY_LINEAR = 1,
54 UMP_REF_DRV_UK_CONSTRAINT_USE_CACHE = 128,
55 } ump_uk_alloc_constraints;
59 _UMP_UK_MSYNC_CLEAN = 0,
60 _UMP_UK_MSYNC_CLEAN_AND_INVALIDATE = 1,
61 _UMP_UK_MSYNC_CLEAN_ALL_AND_INVALIDATE_ALL = 2,
62 _UMP_UK_MSYNC_READOUT_CACHE_ENABLED = 128,
66 * Get API version ([in,out] u32 api_version, [out] u32 compatible)
68 typedef struct _ump_uk_api_version_s
70 void *ctx; /**< [in,out] user-kernel context (trashed on output) */
71 u32 version; /**< Set to the user space version on entry, stores the device driver version on exit */
72 u32 compatible; /**< Non-null if the device is compatible with the client */
73 } _ump_uk_api_version_s;
76 * ALLOCATE ([out] u32 secure_id, [in,out] u32 size, [in] contraints)
78 typedef struct _ump_uk_allocate_s
80 void *ctx; /**< [in,out] user-kernel context (trashed on output) */
81 u32 secure_id; /**< Return value from DD to Userdriver */
82 u32 size; /**< Input and output. Requested size; input. Returned size; output */
83 ump_uk_alloc_constraints constraints; /**< Only input to Devicedriver */
87 * SIZE_GET ([in] u32 secure_id, [out]size )
89 typedef struct _ump_uk_size_get_s
91 void *ctx; /**< [in,out] user-kernel context (trashed on output) */
92 u32 secure_id; /**< Input to DD */
93 u32 size; /**< Returned size; output */
97 * Release ([in] u32 secure_id)
99 typedef struct _ump_uk_release_s
101 void *ctx; /**< [in,out] user-kernel context (trashed on output) */
102 u32 secure_id; /**< Input to DD */
105 typedef struct _ump_uk_map_mem_s
107 void *ctx; /**< [in,out] user-kernel context (trashed on output) */
108 void *mapping; /**< [out] Returns user-space virtual address for the mapping */
109 void *phys_addr; /**< [in] physical address */
110 unsigned long size; /**< [in] size */
111 u32 secure_id; /**< [in] secure_id to assign to mapping */
112 void * _ukk_private; /**< Only used inside linux port between kernel frontend and common part to store vma */
114 u32 is_cached; /**< [in,out] caching of CPU mappings */
117 typedef struct _ump_uk_unmap_mem_s
119 void *ctx; /**< [in,out] user-kernel context (trashed on output) */
124 } _ump_uk_unmap_mem_s;
126 typedef struct _ump_uk_msync_s
128 void *ctx; /**< [in,out] user-kernel context (trashed on output) */
129 void *mapping; /**< [in] mapping addr */
130 void *address; /**< [in] flush start addr */
131 u32 size; /**< [in] size to flush */
132 ump_uk_msync_op op; /**< [in] flush operation */
133 u32 cookie; /**< [in] cookie stored with reference to the kernel mapping internals */
134 u32 secure_id; /**< [in] cookie stored with reference to the kernel mapping internals */
135 u32 is_cached; /**< [out] caching of CPU mappings */
142 #endif /* __UMP_UK_TYPES_H__ */