215 lines
9.0 KiB
C
215 lines
9.0 KiB
C
/*
|
|
* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Except as contained in this notice, the name of the copyright holder(s)
|
|
* and author(s) shall not be used in advertising or otherwise to promote
|
|
* the sale, use or other dealings in this Software without prior written
|
|
* authorization from the copyright holder(s) and author(s).
|
|
*/
|
|
|
|
/*
|
|
* This file contains the parts of the loader interface that are visible
|
|
* to modules. This is the only loader-related header that modules should
|
|
* include.
|
|
*
|
|
* It should include a bare minimum of other headers.
|
|
*
|
|
* Longer term, the module/loader code should probably live directly under
|
|
* Xserver/.
|
|
*
|
|
* XXX This file arguably belongs in xfree86/loader/.
|
|
*/
|
|
|
|
#ifndef _XF86MODULE_H
|
|
#define _XF86MODULE_H
|
|
|
|
#include "misc.h"
|
|
#ifndef NULL
|
|
#define NULL ((void *)0)
|
|
#endif
|
|
|
|
typedef enum {
|
|
LD_RESOLV_IFDONE = 0, /* only check if no more
|
|
delays pending */
|
|
LD_RESOLV_NOW = 1, /* finish one delay step */
|
|
LD_RESOLV_FORCE = 2 /* force checking... */
|
|
} LoaderResolveOptions;
|
|
|
|
#define DEFAULT_LIST ((char *)-1)
|
|
|
|
/* This indicates a special module that doesn't have the usual entry point */
|
|
#define EXTERN_MODULE ((pointer)-1)
|
|
|
|
/* Built-in ABI classes. These definitions must not be changed. */
|
|
#define ABI_CLASS_NONE NULL
|
|
#define ABI_CLASS_ANSIC "X.Org ANSI C Emulation"
|
|
#define ABI_CLASS_VIDEODRV "X.Org Video Driver"
|
|
#define ABI_CLASS_XINPUT "X.Org XInput driver"
|
|
#define ABI_CLASS_EXTENSION "X.Org Server Extension"
|
|
#define ABI_CLASS_FONT "X.Org Font Renderer"
|
|
|
|
#define ABI_MINOR_MASK 0x0000FFFF
|
|
#define ABI_MAJOR_MASK 0xFFFF0000
|
|
#define GET_ABI_MINOR(v) ((v) & ABI_MINOR_MASK)
|
|
#define GET_ABI_MAJOR(v) (((v) & ABI_MAJOR_MASK) >> 16)
|
|
#define SET_ABI_VERSION(maj, min) \
|
|
((((maj) << 16) & ABI_MAJOR_MASK) | ((min) & ABI_MINOR_MASK))
|
|
|
|
/*
|
|
* ABI versions. Each version has a major and minor revision. Modules
|
|
* using lower minor revisions must work with servers of a higher minor
|
|
* revision. There is no compatibility between different major revisions.
|
|
* Whenever the ABI_ANSIC_VERSION is changed, the others must also be
|
|
* changed. The minor revision mask is 0x0000FFFF and the major revision
|
|
* mask is 0xFFFF0000.
|
|
*/
|
|
#define ABI_ANSIC_VERSION SET_ABI_VERSION(0, 4)
|
|
#define ABI_VIDEODRV_VERSION SET_ABI_VERSION(12, 0)
|
|
#define ABI_XINPUT_VERSION SET_ABI_VERSION(16, 0)
|
|
#define ABI_EXTENSION_VERSION SET_ABI_VERSION(6, 0)
|
|
#define ABI_FONT_VERSION SET_ABI_VERSION(0, 6)
|
|
|
|
#define MODINFOSTRING1 0xef23fdc5
|
|
#define MODINFOSTRING2 0x10dc023a
|
|
|
|
#ifndef MODULEVENDORSTRING
|
|
#define MODULEVENDORSTRING "X.Org Foundation"
|
|
#endif
|
|
|
|
/* Error return codes for errmaj. New codes must only be added at the end. */
|
|
typedef enum {
|
|
LDR_NOERROR = 0,
|
|
LDR_NOMEM, /* memory allocation failed */
|
|
LDR_NOENT, /* Module file does not exist */
|
|
LDR_NOSUBENT, /* pre-requsite file to be sub-loaded does not exist */
|
|
LDR_NOSPACE, /* internal module array full */
|
|
LDR_NOMODOPEN, /* module file could not be opened (check errmin) */
|
|
LDR_UNKTYPE, /* file is not a recognized module type */
|
|
LDR_NOLOAD, /* type specific loader failed */
|
|
LDR_ONCEONLY, /* Module should only be loaded once (not an error) */
|
|
LDR_NOPORTOPEN, /* could not open port (check errmin) */
|
|
LDR_NOHARDWARE, /* could not query/initialize the hardware device */
|
|
LDR_MISMATCH, /* the module didn't match the spec'd requirments */
|
|
LDR_BADUSAGE, /* LoadModule is called with bad arguments */
|
|
LDR_INVALID, /* The module doesn't have a valid ModuleData object */
|
|
LDR_BADOS, /* The module doesn't support the OS */
|
|
LDR_MODSPECIFIC /* A module-specific error in the SetupProc */
|
|
} LoaderErrorCode;
|
|
|
|
/*
|
|
* Some common module classes. The moduleclass can be used to identify
|
|
* that modules loaded are of the correct type. This is a finer
|
|
* classification than the ABI classes even though the default set of
|
|
* classes have the same names. For example, not all modules that require
|
|
* the video driver ABI are themselves video drivers.
|
|
*/
|
|
#define MOD_CLASS_NONE NULL
|
|
#define MOD_CLASS_VIDEODRV "X.Org Video Driver"
|
|
#define MOD_CLASS_XINPUT "X.Org XInput Driver"
|
|
#define MOD_CLASS_FONT "X.Org Font Renderer"
|
|
#define MOD_CLASS_EXTENSION "X.Org Server Extension"
|
|
|
|
/* This structure is expected to be returned by the initfunc */
|
|
typedef struct {
|
|
const char *modname; /* name of module, e.g. "foo" */
|
|
const char *vendor; /* vendor specific string */
|
|
CARD32 _modinfo1_; /* constant MODINFOSTRING1/2 to find */
|
|
CARD32 _modinfo2_; /* infoarea with a binary editor or sign tool */
|
|
CARD32 xf86version; /* contains XF86_VERSION_CURRENT */
|
|
CARD8 majorversion; /* module-specific major version */
|
|
CARD8 minorversion; /* module-specific minor version */
|
|
CARD16 patchlevel; /* module-specific patch level */
|
|
const char *abiclass; /* ABI class that the module uses */
|
|
CARD32 abiversion; /* ABI version */
|
|
const char *moduleclass; /* module class description */
|
|
CARD32 checksum[4]; /* contains a digital signature of the */
|
|
/* version info structure */
|
|
} XF86ModuleVersionInfo;
|
|
|
|
/*
|
|
* This structure can be used to callers of LoadModule and LoadSubModule to
|
|
* specify version and/or ABI requirements.
|
|
*/
|
|
typedef struct {
|
|
CARD8 majorversion; /* module-specific major version */
|
|
CARD8 minorversion; /* moudle-specific minor version */
|
|
CARD16 patchlevel; /* module-specific patch level */
|
|
const char *abiclass; /* ABI class that the module uses */
|
|
CARD32 abiversion; /* ABI version */
|
|
const char *moduleclass; /* module class */
|
|
} XF86ModReqInfo;
|
|
|
|
/* values to indicate unspecified fields in XF86ModReqInfo. */
|
|
#define MAJOR_UNSPEC 0xFF
|
|
#define MINOR_UNSPEC 0xFF
|
|
#define PATCH_UNSPEC 0xFFFF
|
|
#define ABI_VERS_UNSPEC 0xFFFFFFFF
|
|
|
|
#define MODULE_VERSION_NUMERIC(maj, min, patch) \
|
|
((((maj) & 0xFF) << 24) | (((min) & 0xFF) << 16) | (patch & 0xFFFF))
|
|
#define GET_MODULE_MAJOR_VERSION(vers) (((vers) >> 24) & 0xFF)
|
|
#define GET_MODULE_MINOR_VERSION(vers) (((vers) >> 16) & 0xFF)
|
|
#define GET_MODULE_PATCHLEVEL(vers) ((vers) & 0xFFFF)
|
|
|
|
#define INITARGS void
|
|
|
|
typedef void (*InitExtension) (INITARGS);
|
|
|
|
typedef struct {
|
|
InitExtension initFunc;
|
|
const char *name;
|
|
Bool *disablePtr;
|
|
InitExtension setupFunc;
|
|
const char **initDependencies;
|
|
} ExtensionModule;
|
|
|
|
extern _X_EXPORT ExtensionModule *ExtensionModuleList;
|
|
|
|
/* Prototypes for Loader functions that are exported to modules */
|
|
extern _X_EXPORT pointer LoadSubModule(pointer, const char *, const char **,
|
|
const char **, pointer,
|
|
const XF86ModReqInfo *, int *, int *);
|
|
extern _X_EXPORT void UnloadSubModule(pointer);
|
|
extern _X_EXPORT void UnloadModule(pointer);
|
|
extern _X_EXPORT pointer LoaderSymbol(const char *);
|
|
extern _X_EXPORT char **LoaderListDirs(const char **, const char **);
|
|
extern _X_EXPORT void LoaderFreeDirList(char **);
|
|
extern _X_EXPORT void LoaderErrorMsg(const char *, const char *, int, int);
|
|
extern _X_EXPORT void LoadExtension(ExtensionModule *, Bool);
|
|
extern _X_EXPORT void LoaderGetOS(const char **name, int *major, int *minor,
|
|
int *teeny);
|
|
extern _X_EXPORT Bool LoaderShouldIgnoreABI(void);
|
|
extern _X_EXPORT int LoaderGetABIVersion(const char *abiclass);
|
|
|
|
typedef pointer (*ModuleSetupProc) (pointer, pointer, int *, int *);
|
|
typedef void (*ModuleTearDownProc) (pointer);
|
|
|
|
#define MODULESETUPPROTO(func) pointer func(pointer, pointer, int*, int*)
|
|
#define MODULETEARDOWNPROTO(func) void func(pointer)
|
|
|
|
typedef struct {
|
|
XF86ModuleVersionInfo *vers;
|
|
ModuleSetupProc setup;
|
|
ModuleTearDownProc teardown;
|
|
} XF86ModuleData;
|
|
|
|
#endif /* _XF86STR_H */
|