Import of CMU's RAIDframe via NetBSD.

1 files changed, 121 insertions, 0 deletions

diff --git a/sys/dev/raidframe/rf_callback.c b/sys/dev/raidframe/rf_callback.c
new file mode 100644
index 00000000000..dffd52fc7a6
--- /dev/null
+++ b/sys/dev/raidframe/rf_callback.c
@@ -0,0 +1,121 @@
+/*	$OpenBSD: rf_callback.c,v 1.1 1999/01/11 14:29:00 niklas Exp $	*/
+/*	$NetBSD: rf_callback.c,v 1.1 1998/11/13 04:20:26 oster Exp $	*/
+/*
+ * Copyright (c) 1995 Carnegie-Mellon University.
+ * All rights reserved.
+ *
+ * Author: Jim Zelenka
+ *
+ * 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.c -- code to manipulate callback descriptor
+ *
+ ****************************************************************************************/
+
+/* :  
+ * Log: rf_callback.c,v 
+ * Revision 1.11  1996/06/17 03:18:04  jimz
+ * include shutdown.h for macroized ShutdownCreate
+ *
+ * Revision 1.10  1996/06/10  11:55:47  jimz
+ * Straightened out some per-array/not-per-array distinctions, fixed
+ * a couple bugs related to confusion. Added shutdown lists. Removed
+ * layout shutdown function (now subsumed by shutdown lists).
+ *
+ * Revision 1.9  1996/05/23  21:46:35  jimz
+ * checkpoint in code cleanup (release prep)
+ * lots of types, function names have been fixed
+ *
+ * Revision 1.8  1996/05/18  19:51:34  jimz
+ * major code cleanup- fix syntax, make some types consistent,
+ * add prototypes, clean out dead code, et cetera
+ *
+ * Revision 1.7  1996/05/17  16:30:41  jimz
+ * convert to RF_FREELIST stuff
+ *
+ * Revision 1.6  1995/12/01  15:16:04  root
+ * added copyright info
+ *
+ */
+
+#ifndef _KERNEL
+#ifdef __NetBSD__
+#include <unistd.h>
+#endif /* __NetBSD__ */
+#endif
+
+#include "rf_types.h"
+#include "rf_threadstuff.h"
+#include "rf_callback.h"
+#include "rf_debugMem.h"
+#include "rf_freelist.h"
+#include "rf_shutdown.h"
+
+static RF_FreeList_t *rf_callback_freelist;
+
+#define RF_MAX_FREE_CALLBACK 64
+#define RF_CALLBACK_INC       4
+#define RF_CALLBACK_INITIAL   4
+
+static void rf_ShutdownCallback(void *);
+static void rf_ShutdownCallback(ignored)
+  void  *ignored;
+{
+	RF_FREELIST_DESTROY(rf_callback_freelist,next,(RF_CallbackDesc_t *));
+}
+
+int rf_ConfigureCallback(listp)
+  RF_ShutdownList_t  **listp;
+{
+	int rc;
+
+	RF_FREELIST_CREATE(rf_callback_freelist, RF_MAX_FREE_CALLBACK,
+		RF_CALLBACK_INC, sizeof(RF_CallbackDesc_t));
+	if (rf_callback_freelist == NULL)
+		return(ENOMEM);
+	rc = rf_ShutdownCreate(listp, rf_ShutdownCallback, NULL);
+	if (rc) {
+		RF_ERRORMSG3("Unable to add to shutdown list file %s line %d rc=%d\n", __FILE__,
+			__LINE__, rc);
+		rf_ShutdownCallback(NULL);
+		return(rc);
+	}
+	RF_FREELIST_PRIME(rf_callback_freelist, RF_CALLBACK_INITIAL,next,
+		(RF_CallbackDesc_t *));
+	return(0);
+}
+
+RF_CallbackDesc_t *rf_AllocCallbackDesc()
+{
+	RF_CallbackDesc_t *p;
+
+	RF_FREELIST_GET(rf_callback_freelist,p,next,(RF_CallbackDesc_t *));
+	return(p);
+}
+
+void rf_FreeCallbackDesc(p)
+  RF_CallbackDesc_t *p;
+{
+	RF_FREELIST_FREE(rf_callback_freelist,p,next);
+}