patch-2.2.3 linux/drivers/scsi/qlogicfc.h

• Lines: 103
• Date: Wed Feb 24 16:27:54 1999
• Orig file: v2.2.2/linux/drivers/scsi/qlogicfc.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.2/linux/drivers/scsi/qlogicfc.h linux/drivers/scsi/qlogicfc.h
@@ -0,0 +1,102 @@
+/*
+ * QLogic ISP2100 SCSI-FCP
+ * 
+ * Written by Erik H. Moe, ehm@cris.com
+ * Copyright 1995, Erik H. Moe
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+/* Renamed and updated to 1.3.x by Michael Griffith <grif@cs.ucr.edu> */
+
+/* This is a version of the isp1020 driver which was modified by
+ * Chris Loveland <cwl@iol.unh.edu> to support the isp2100
+ */
+
+
+/*
+ * $Date: 1995/09/22 02:32:56 $
+ * $Revision: 0.5 $
+ *
+ * $Log: isp1020.h,v $
+ * Revision 0.5  1995/09/22  02:32:56  root
+ * do auto request sense
+ *
+ * Revision 0.4  1995/08/07  04:48:28  root
+ * supply firmware with driver.
+ * numerous bug fixes/general cleanup of code.
+ *
+ * Revision 0.3  1995/07/16  16:17:16  root
+ * added reset/abort code.
+ *
+ * Revision 0.2  1995/06/29  03:19:43  root
+ * fixed biosparam.
+ * added queue protocol.
+ *
+ * Revision 0.1  1995/06/25  01:56:13  root
+ * Initial release.
+ *
+ */
+
+#ifndef _QLOGICFC_H
+#define _QLOGICFC_H
+
+/*
+ * With the qlogic interface, every queue slot can hold a SCSI
+ * command with up to 2 scatter/gather entries.  If we need more
+ * than 2 entries, continuation entries can be used that hold
+ * another 5 entries each.  Unlike for other drivers, this means
+ * that the maximum number of scatter/gather entries we can
+ * support at any given time is a function of the number of queue
+ * slots available.  That is, host->can_queue and host->sg_tablesize
+ * are dynamic and _not_ independent.  This all works fine because
+ * requests are queued serially and the scatter/gather limit is
+ * determined for each queue request anew.
+ */
+#define QLOGICFC_REQ_QUEUE_LEN	63	/* must be power of two - 1 */
+#define QLOGICFC_MAX_SG(ql)	(2 + (((ql) > 0) ? 5*((ql) - 1) : 0))
+#define QLOGICFC_CMD_PER_LUN    8
+
+int isp2100_detect(Scsi_Host_Template *);
+int isp2100_release(struct Scsi_Host *);
+const char * isp2100_info(struct Scsi_Host *);
+int isp2100_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *));
+int isp2100_abort(Scsi_Cmnd *);
+int isp2100_reset(Scsi_Cmnd *, unsigned int);
+int isp2100_biosparam(Disk *, kdev_t, int[]);
+
+#ifndef NULL
+#define NULL (0)
+#endif
+
+extern struct proc_dir_entry proc_scsi_isp2100;
+
+#define QLOGICFC {							   \
+        detect:                 isp2100_detect,                            \
+        release:                isp2100_release,                           \
+        info:                   isp2100_info,                              \
+        queuecommand:           isp2100_queuecommand,                      \
+        abort:                  isp2100_abort,                             \
+        reset:                  isp2100_reset,                             \
+        bios_param:             isp2100_biosparam,                         \
+        can_queue:              QLOGICFC_REQ_QUEUE_LEN,                    \
+        this_id:                -1,                                        \
+        sg_tablesize:           QLOGICFC_MAX_SG(QLOGICFC_REQ_QUEUE_LEN),   \
+        cmd_per_lun:            QLOGICFC_CMD_PER_LUN,                      \
+        present:                0,                                         \
+        unchecked_isa_dma:      0,                                         \
+        use_clustering:         DISABLE_CLUSTERING                         \
+}
+
+#endif /* _QLOGICFC_H */
+
+
+