Move rtems/freebsd to freebsd and contrib to freebsd/contrib

1 files changed, 218 insertions, 0 deletions

diff --git a/freebsd/sys/module.h b/freebsd/sys/module.h
new file mode 100644
index 00000000..23650f71
--- /dev/null
+++ b/freebsd/sys/module.h
@@ -0,0 +1,218 @@
+/*-
+ * Copyright (c) 1997 Doug Rabson
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _SYS_MODULE_HH_
+#define _SYS_MODULE_HH_
+
+/*
+ * Module metadata types
+ */
+#define	MDT_DEPEND	1		/* argument is a module name */
+#define	MDT_MODULE	2		/* module declaration */
+#define	MDT_VERSION	3		/* module version(s) */
+
+#define	MDT_STRUCT_VERSION	1	/* version of metadata structure */
+#define	MDT_SETNAME	"modmetadata_set"
+
+typedef enum modeventtype {
+	MOD_LOAD,
+	MOD_UNLOAD,
+	MOD_SHUTDOWN,
+	MOD_QUIESCE
+} modeventtype_t;
+
+typedef struct module *module_t;
+typedef int (*modeventhand_t)(module_t, int /* modeventtype_t */, void *);
+
+/*
+ * Struct for registering modules statically via SYSINIT.
+ */
+typedef struct moduledata {
+	const char	*name;		/* module name */
+	modeventhand_t  evhand;		/* event handler */
+	void		*priv;		/* extra data */
+} moduledata_t;
+
+/*
+ * A module can use this to report module specific data to the user via
+ * kldstat(2).
+ */
+typedef union modspecific {
+	int	intval;
+	u_int	uintval;
+	long	longval;
+	u_long	ulongval;
+} modspecific_t;
+
+/*
+ * Module dependency declarartion
+ */
+struct mod_depend {
+	int	md_ver_minimum;
+	int	md_ver_preferred;
+	int	md_ver_maximum;
+};
+
+/*
+ * Module version declaration
+ */
+struct mod_version {
+	int	mv_version;
+};
+
+struct mod_metadata {
+	int		md_version;	/* structure version MDTV_* */
+	int		md_type;	/* type of entry MDT_* */
+	void		*md_data;	/* specific data */
+	const char	*md_cval;	/* common string label */
+};
+
+#ifdef	_KERNEL
+
+#include <rtems/freebsd/sys/linker_set.h>
+
+#define	MODULE_METADATA(uniquifier, type, data, cval)			\
+	static struct mod_metadata _mod_metadata##uniquifier = {	\
+		MDT_STRUCT_VERSION,					\
+		type,							\
+		data,							\
+		cval							\
+	};								\
+	DATA_SET(modmetadata_set, _mod_metadata##uniquifier)
+
+#define	MODULE_DEPEND(module, mdepend, vmin, vpref, vmax)		\
+	static struct mod_depend _##module##_depend_on_##mdepend = {	\
+		vmin,							\
+		vpref,							\
+		vmax							\
+	};								\
+	MODULE_METADATA(_md_##module##_on_##mdepend, MDT_DEPEND,	\
+	    &_##module##_depend_on_##mdepend, #mdepend)
+
+/*
+ * Every kernel has a 'kernel' module with the version set to
+ * __FreeBSD_version.  We embed a MODULE_DEPEND() inside every module
+ * that depends on the 'kernel' module.  It uses the current value of
+ * __FreeBSD_version as the minimum and preferred versions.  For the
+ * maximum version it rounds the version up to the end of its branch
+ * (i.e. M99999 for M.x).  This allows a module built on M.x to work
+ * on M.y systems where y >= x, but fail on M.z systems where z < x.
+ */
+#define	MODULE_KERNEL_MAXVER	(roundup(__FreeBSD_version, 100000) - 1)
+
+#define	DECLARE_MODULE_WITH_MAXVER(name, data, sub, order, maxver)	\
+	MODULE_DEPEND(name, kernel, __FreeBSD_version,			\
+	    __FreeBSD_version, maxver);			\
+	MODULE_METADATA(_md_##name, MDT_MODULE, &data, #name);		\
+	SYSINIT(name##module, sub, order, module_register_init, &data);	\
+	struct __hack
+
+#define	DECLARE_MODULE(name, data, sub, order)				\
+	DECLARE_MODULE_WITH_MAXVER(name, data, sub, order, MODULE_KERNEL_MAXVER)
+
+/*
+ * The module declared with DECLARE_MODULE_TIED can only be loaded
+ * into the kernel with exactly the same __FreeBSD_version.
+ *
+ * Use it for modules that use kernel interfaces that are not stable
+ * even on STABLE/X branches.
+ */
+#define	DECLARE_MODULE_TIED(name, data, sub, order)				\
+	DECLARE_MODULE_WITH_MAXVER(name, data, sub, order, __FreeBSD_version)
+
+#define	MODULE_VERSION(module, version)					\
+	static struct mod_version _##module##_version = {		\
+		version							\
+	};								\
+	MODULE_METADATA(_##module##_version, MDT_VERSION,		\
+	    &_##module##_version, #module)
+
+extern struct sx modules_sx;
+
+#define	MOD_XLOCK	sx_xlock(&modules_sx)
+#define	MOD_SLOCK	sx_slock(&modules_sx)
+#define	MOD_XUNLOCK	sx_xunlock(&modules_sx)
+#define	MOD_SUNLOCK	sx_sunlock(&modules_sx)
+#define	MOD_LOCK_ASSERT	sx_assert(&modules_sx, SX_LOCKED)
+#define	MOD_XLOCK_ASSERT	sx_assert(&modules_sx, SX_XLOCKED)
+
+struct linker_file;
+
+void	module_register_init(const void *);
+int	module_register(const struct moduledata *, struct linker_file *);
+module_t	module_lookupbyname(const char *);
+module_t	module_lookupbyid(int);
+int	module_quiesce(module_t);
+void	module_reference(module_t);
+void	module_release(module_t);
+int	module_unload(module_t);
+int	module_getid(module_t);
+module_t	module_getfnext(module_t);
+const char *	module_getname(module_t);
+void	module_setspecific(module_t, modspecific_t *);
+struct linker_file *module_file(module_t);
+
+#ifdef	MOD_DEBUG
+extern int mod_debug;
+#define	MOD_DEBUG_REFS	1
+
+#define	MOD_DPF(cat, args) do {						\
+	if (mod_debug & MOD_DEBUG_##cat)				\
+		printf(args);						\
+} while (0)
+
+#else	/* !MOD_DEBUG */
+
+#define	MOD_DPF(cat, args)
+#endif
+#endif	/* _KERNEL */
+
+#define	MAXMODNAME	32
+
+struct module_stat {
+	int		version;	/* set to sizeof(struct module_stat) */
+	char		name[MAXMODNAME];
+	int		refs;
+	int		id;
+	modspecific_t	data;
+};
+
+#ifndef _KERNEL
+
+#include <rtems/freebsd/sys/cdefs.h>
+
+__BEGIN_DECLS
+int	modnext(int _modid);
+int	modfnext(int _modid);
+int	modstat(int _modid, struct module_stat *_stat);
+int	modfind(const char *_name);
+__END_DECLS
+
+#endif
+
+#endif	/* !_SYS_MODULE_HH_ */