Import of CMU's RAIDframe via NetBSD.

1 files changed, 90 insertions, 0 deletions

diff --git a/sys/dev/raidframe/rf_sstf.h b/sys/dev/raidframe/rf_sstf.h
new file mode 100644
index 00000000000..9d81a090826
--- /dev/null
+++ b/sys/dev/raidframe/rf_sstf.h
@@ -0,0 +1,90 @@
+/*	$OpenBSD: rf_sstf.h,v 1.1 1999/01/11 14:29:50 niklas Exp $	*/
+/*	$NetBSD: rf_sstf.h,v 1.1 1998/11/13 04:20:34 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.
+ */
+
+/* :  
+ * Log: rf_sstf.h,v 
+ * Revision 1.6  1996/06/18 20:53:11  jimz
+ * fix up disk queueing (remove configure routine,
+ * add shutdown list arg to create routines)
+ *
+ * Revision 1.5  1996/06/13  20:42:08  jimz
+ * add scan, cscan
+ *
+ * Revision 1.4  1996/06/07  22:26:27  jimz
+ * type-ify which_ru (RF_ReconUnitNum_t)
+ *
+ * Revision 1.3  1996/06/07  21:33:04  jimz
+ * begin using consistent types for sector numbers,
+ * stripe numbers, row+col numbers, recon unit numbers
+ *
+ * Revision 1.2  1996/06/06  01:22:24  jimz
+ * minor cleanup
+ *
+ * Revision 1.1  1996/06/05  19:17:40  jimz
+ * Initial revision
+ *
+ */
+
+#ifndef _RF__RF_SSTF_H_
+#define _RF__RF_SSTF_H_
+
+#include "rf_diskqueue.h"
+
+typedef struct RF_SstfQ_s {
+	RF_DiskQueueData_t  *queue;
+	RF_DiskQueueData_t  *qtail;
+	int                  qlen;
+} RF_SstfQ_t;
+
+typedef struct RF_Sstf_s {
+	RF_SstfQ_t        left;
+	RF_SstfQ_t        right;
+	RF_SstfQ_t        lopri;
+	RF_SectorNum_t    last_sector;
+	int               dir;
+	int               allow_reverse;
+} RF_Sstf_t;
+
+void *rf_SstfCreate(RF_SectorCount_t sect_per_disk,
+	RF_AllocListElem_t *cl_list, RF_ShutdownList_t **listp);
+void *rf_ScanCreate(RF_SectorCount_t sect_per_disk,
+	RF_AllocListElem_t *cl_list, RF_ShutdownList_t **listp);
+void *rf_CscanCreate(RF_SectorCount_t sect_per_disk,
+	RF_AllocListElem_t *cl_list, RF_ShutdownList_t **listp);
+void rf_SstfEnqueue(void *qptr, RF_DiskQueueData_t *req, int priority);
+RF_DiskQueueData_t *rf_SstfDequeue(void *qptr);
+RF_DiskQueueData_t *rf_SstfPeek(void *qptr);
+int rf_SstfPromote(void *qptr, RF_StripeNum_t parityStripeID,
+	RF_ReconUnitNum_t which_ru);
+RF_DiskQueueData_t *rf_ScanDequeue(void *qptr);
+RF_DiskQueueData_t *rf_ScanPeek(void *qptr);
+RF_DiskQueueData_t *rf_CscanDequeue(void *qptr);
+RF_DiskQueueData_t *rf_CscanPeek(void *qptr);
+
+#endif /* !_RF__RF_SSTF_H_ */