1 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86Module.h,v 1.37 2003/08/24 17:36:54 dawes Exp $ */
4 * Copyright (c) 1997-2003 by The XFree86 Project, Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
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10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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24 * Except as contained in this notice, the name of the copyright holder(s)
25 * and author(s) shall not be used in advertising or otherwise to promote
26 * the sale, use or other dealings in this Software without prior written
27 * authorization from the copyright holder(s) and author(s).
31 * This file contains the parts of the loader interface that are visible
32 * to modules. This is the only loader-related header that modules should
35 * It should include a bare minimum of other headers.
37 * Longer term, the module/loader code should probably live directly under
40 * XXX This file arguably belongs in xfree86/loader/.
47 #include "xf86Version.h"
49 #define NULL ((void *)0)
53 LD_RESOLV_IFDONE = 0, /* only check if no more
55 LD_RESOLV_NOW = 1, /* finish one delay step */
56 LD_RESOLV_FORCE = 2 /* force checking... */
57 } LoaderResolveOptions;
59 #define DEFAULT_LIST ((char *)-1)
61 /* This indicates a special module that doesn't have the usual entry point */
62 #define EXTERN_MODULE ((pointer)-1)
64 /* Built-in ABI classes. These definitions must not be changed. */
65 #define ABI_CLASS_NONE NULL
66 #define ABI_CLASS_ANSIC "X.Org ANSI C Emulation"
67 #define ABI_CLASS_VIDEODRV "X.Org Video Driver"
68 #define ABI_CLASS_XINPUT "X.Org XInput driver"
69 #define ABI_CLASS_EXTENSION "X.Org Server Extension"
70 #define ABI_CLASS_FONT "X.Org Font Renderer"
72 #define ABI_MINOR_MASK 0x0000FFFF
73 #define ABI_MAJOR_MASK 0xFFFF0000
74 #define GET_ABI_MINOR(v) ((v) & ABI_MINOR_MASK)
75 #define GET_ABI_MAJOR(v) (((v) & ABI_MAJOR_MASK) >> 16)
76 #define SET_ABI_VERSION(maj, min) \
77 ((((maj) << 16) & ABI_MAJOR_MASK) | ((min) & ABI_MINOR_MASK))
80 * ABI versions. Each version has a major and minor revision. Modules
81 * using lower minor revisions must work with servers of a higher minor
82 * revision. There is no compatibility between different major revisions.
83 * Whenever the ABI_ANSIC_VERSION is changed, the others must also be
84 * changed. The minor revision mask is 0x0000FFFF and the major revision
87 #define ABI_ANSIC_VERSION SET_ABI_VERSION(0, 2)
88 #define ABI_VIDEODRV_VERSION SET_ABI_VERSION(0, 8)
89 #define ABI_XINPUT_VERSION SET_ABI_VERSION(0, 5)
90 #define ABI_EXTENSION_VERSION SET_ABI_VERSION(0, 2)
91 #define ABI_FONT_VERSION SET_ABI_VERSION(0, 4)
93 #define MODINFOSTRING1 0xef23fdc5
94 #define MODINFOSTRING2 0x10dc023a
96 #ifndef MODULEVENDORSTRING
98 #define MODULEVENDORSTRING "X.Org Foundation"
100 #define MODULEVENDORSTRING "X.Org Foundation - OS2"
104 /* Error return codes for errmaj. New codes must only be added at the end. */
107 LDR_NOMEM, /* memory allocation failed */
108 LDR_NOENT, /* Module file does not exist */
109 LDR_NOSUBENT, /* pre-requsite file to be sub-loaded does not exist */
110 LDR_NOSPACE, /* internal module array full */
111 LDR_NOMODOPEN, /* module file could not be opened (check errmin) */
112 LDR_UNKTYPE, /* file is not a recognized module type */
113 LDR_NOLOAD, /* type specific loader failed */
114 LDR_ONCEONLY, /* Module should only be loaded once (not an error) */
115 LDR_NOPORTOPEN, /* could not open port (check errmin) */
116 LDR_NOHARDWARE, /* could not query/initialize the hardware device */
117 LDR_MISMATCH, /* the module didn't match the spec'd requirments */
118 LDR_BADUSAGE, /* LoadModule is called with bad arguments */
119 LDR_INVALID, /* The module doesn't have a valid ModuleData object */
120 LDR_BADOS, /* The module doesn't support the OS */
121 LDR_MODSPECIFIC /* A module-specific error in the SetupProc */
125 * Some common module classes. The moduleclass can be used to identify
126 * that modules loaded are of the correct type. This is a finer
127 * classification than the ABI classes even though the default set of
128 * classes have the same names. For example, not all modules that require
129 * the video driver ABI are themselves video drivers.
131 #define MOD_CLASS_NONE NULL
132 #define MOD_CLASS_VIDEODRV "X.Org Video Driver"
133 #define MOD_CLASS_XINPUT "X.Org XInput Driver"
134 #define MOD_CLASS_FONT "X.Org Font Renderer"
135 #define MOD_CLASS_EXTENSION "X.Org Server Extension"
137 /* This structure is expected to be returned by the initfunc */
139 const char * modname; /* name of module, e.g. "foo" */
140 const char * vendor; /* vendor specific string */
141 CARD32 _modinfo1_; /* constant MODINFOSTRING1/2 to find */
142 CARD32 _modinfo2_; /* infoarea with a binary editor or sign tool */
143 CARD32 xf86version; /* contains XF86_VERSION_CURRENT */
144 CARD8 majorversion; /* module-specific major version */
145 CARD8 minorversion; /* module-specific minor version */
146 CARD16 patchlevel; /* module-specific patch level */
147 const char * abiclass; /* ABI class that the module uses */
148 CARD32 abiversion; /* ABI version */
149 const char * moduleclass; /* module class description */
150 CARD32 checksum[4]; /* contains a digital signature of the */
151 /* version info structure */
152 } XF86ModuleVersionInfo;
155 * This structure can be used to callers of LoadModule and LoadSubModule to
156 * specify version and/or ABI requirements.
159 CARD8 majorversion; /* module-specific major version */
160 CARD8 minorversion; /* moudle-specific minor version */
161 CARD16 patchlevel; /* module-specific patch level */
162 const char * abiclass; /* ABI class that the module uses */
163 CARD32 abiversion; /* ABI version */
164 const char * moduleclass; /* module class */
167 /* values to indicate unspecified fields in XF86ModReqInfo. */
168 #define MAJOR_UNSPEC 0xFF
169 #define MINOR_UNSPEC 0xFF
170 #define PATCH_UNSPEC 0xFFFF
171 #define ABI_VERS_UNSPEC 0xFFFFFFFF
173 #define MODULE_VERSION_NUMERIC(maj, min, patch) \
174 ((((maj) & 0xFF) << 24) | (((min) & 0xFF) << 16) | (patch & 0xFFFF))
175 #define GET_MODULE_MAJOR_VERSION(vers) (((vers) >> 24) & 0xFF)
176 #define GET_MODULE_MINOR_VERSION(vers) (((vers) >> 16) & 0xFF)
177 #define GET_MODULE_PATCHLEVEL(vers) ((vers) & 0xFFFF)
179 #define INITARGS void
181 typedef void (*InitExtension)(INITARGS);
184 InitExtension initFunc;
187 InitExtension setupFunc;
188 const char ** initDependencies;
191 extern ExtensionModule *ExtensionModuleList;
193 /* Prototypes for Loader functions that are exported to modules */
195 /* Prototypes with opaque pointers for use by modules */
196 pointer LoadSubModule(pointer, const char *, const char **,
197 const char **, pointer, const XF86ModReqInfo *,
199 void UnloadSubModule(pointer);
200 void LoadFont(pointer);
201 void UnloadModule (pointer);
203 pointer LoaderSymbol(const char *);
204 char **LoaderListDirs(const char **, const char **);
205 void LoaderFreeDirList(char **);
206 void LoaderErrorMsg(const char *, const char *, int, int);
207 void LoadExtension(ExtensionModule *, Bool);
208 void LoaderRefSymLists(const char **, ...);
209 void LoaderRefSymbols(const char *, ...);
210 void LoaderReqSymLists(const char **, ...);
211 void LoaderReqSymbols(const char *, ...);
212 int LoaderCheckUnresolved(int);
213 void LoaderGetOS(const char **name, int *major, int *minor, int *teeny);
215 typedef pointer (*ModuleSetupProc)(pointer, pointer, int *, int *);
216 typedef void (*ModuleTearDownProc)(pointer);
217 #define MODULESETUPPROTO(func) pointer func(pointer, pointer, int*, int*)
218 #define MODULETEARDOWNPROTO(func) void func(pointer)
221 XF86ModuleVersionInfo * vers;
222 ModuleSetupProc setup;
223 ModuleTearDownProc teardown;
226 #endif /* _XF86STR_H */