Start to split the GEOM/diskdriver specific bits into geom/geom_disk.h

1 files changed, 93 insertions, 0 deletions

diff --git a/sys/geom/geom_disk.h b/sys/geom/geom_disk.h
new file mode 100644
index 0000000..7cd079e
--- /dev/null
+++ b/sys/geom/geom_disk.h
@@ -0,0 +1,93 @@
+/*-
+ * Copyright (c) 2003 Poul-Henning Kamp
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project by Poul-Henning Kamp
+ * and NAI Labs, the Security Research Division of Network Associates, Inc.
+ * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
+ * DARPA CHATS research program.
+ *
+ * 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.
+ * 3. The names of the authors may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * 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 _GEOM_GEOM_DISK_H_
+#define _GEOM_GEOM_DISK_H_
+
+#ifdef _KERNEL 
+
+#include <sys/queue.h>
+
+typedef	int	disk_open_t(struct disk *);
+typedef	int	disk_close_t(struct disk *);
+typedef	void	disk_strategy_t(struct bio *bp);
+typedef	int	disk_ioctl_t(struct disk *, u_long cmd, void *data,
+			int fflag, struct thread *td);
+		/* NB: disk_ioctl_t SHALL be cast'able to d_ioctl_t */
+
+struct g_geom;
+struct devstat;
+
+struct disk {
+	/* Fields which are private to geom_disk */
+	struct g_geom		*d_geom;
+	struct devstat		*d_devstat;
+
+	/* Shared fields */
+	u_int			d_flags;
+	const char		*d_name;
+	u_int			d_unit;
+
+	/* Disk methods  */
+	disk_open_t		*d_open;
+	disk_close_t		*d_close;
+	disk_strategy_t		*d_strategy;
+	disk_ioctl_t		*d_ioctl;
+	dumper_t		*d_dump;
+
+	/* Info fields from driver to geom_disk.c. Valid when open */
+	u_int			d_sectorsize;
+	off_t			d_mediasize;
+	u_int			d_fwsectors;
+	u_int			d_fwheads;
+	u_int			d_maxsize;
+	u_int			d_stripeoffset;
+	u_int			d_stripesize;
+
+	/* Fields private to the driver */
+	void			*d_drv1;
+};
+
+#define DISKFLAG_NOGIANT	0x1
+#define DISKFLAG_OPEN		0x2
+#define DISKFLAG_CANDELETE	0x4
+
+void disk_create(int unit, struct disk *disk, int flags, void *unused, void *unused2);
+void disk_destroy(struct disk *disk);
+
+
+#endif /* _KERNEL */
+#endif /* _GEOM_GEOM_DISK_H_ */