1 files changed, 65 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_callback.h b/sys/dev/raidframe/rf_callback.h
new file mode 100644
index 0000000..feda31d
--- /dev/null
+++ b/sys/dev/raidframe/rf_callback.h
@@ -0,0 +1,65 @@
+/*	$FreeBSD$ */
+/*	$NetBSD: rf_callback.h,v 1.3 1999/02/05 00:06:06 oster Exp $	*/
+/*
+ * Copyright (c) 1995 Carnegie-Mellon University.
+ * All rights reserved.
+ *
+ * Author: Mark Holland
+ *
+ * Permission to use, copy, modify and distribute this software and
+ * its documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
+ * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie the
+ * rights to redistribute these changes.
+ */
+
+/*****************************************************************************************
+ *
+ * callback.h -- header file for callback.c
+ *
+ * the reconstruction code must manage concurrent I/Os on multiple drives.
+ * it sometimes needs to suspend operation on a particular drive until some
+ * condition occurs.  we can't block the thread, of course, or we wouldn't
+ * be able to manage our other outstanding I/Os.  Instead we just suspend
+ * new activity on the indicated disk, and create a callback descriptor and
+ * put it someplace where it will get invoked when the condition that's
+ * stalling us has cleared.  When the descriptor is invoked, it will call
+ * a function that will restart operation on the indicated disk.
+ *
+ ****************************************************************************************/
+
+#ifndef _RF__RF_CALLBACK_H_
+#define _RF__RF_CALLBACK_H_
+
+#include <dev/raidframe/rf_types.h>
+
+struct RF_CallbackDesc_s {
+	void    (*callbackFunc) (RF_CBParam_t);	/* function to call */
+	RF_CBParam_t callbackArg;	/* args to give to function, or just
+					 * info about this callback  */
+	RF_CBParam_t callbackArg2;
+	RF_RowCol_t row;	/* disk row and column IDs to give to the
+				 * callback func */
+	RF_RowCol_t col;
+	RF_CallbackDesc_t *next;/* next entry in list */
+};
+
+int     rf_ConfigureCallback(RF_ShutdownList_t ** listp);
+RF_CallbackDesc_t *rf_AllocCallbackDesc(void);
+void    rf_FreeCallbackDesc(RF_CallbackDesc_t * p);
+
+#endif				/* !_RF__RF_CALLBACK_H_ */