Import of Linux/MIPS 2.1.14

1 files changed, 99 insertions, 0 deletions

diff --git a/drivers/scsi/qlogicisp.h b/drivers/scsi/qlogicisp.h
new file mode 100644
index 000000000..66cf495ef
--- /dev/null
+++ b/drivers/scsi/qlogicisp.h
@@ -0,0 +1,99 @@
+/*
+ * QLogic ISP1020 Intelligent SCSI Processor Driver (PCI)
+ * 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> */
+
+/*
+ * $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 _QLOGICISP_H
+#define _QLOGICISP_H
+
+/*
+ * With the qlogic interface, every queue slot can hold a SCSI
+ * command with up to 4 scatter/gather entries.  If we need more
+ * than 4 entries, continuation entries can be used that hold
+ * another 7 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 QLOGICISP_REQ_QUEUE_LEN	63	/* must be power of two - 1 */
+#define QLOGICISP_MAX_SG(ql)	(4 + ((ql) > 0) ? 7*((ql) - 1) : 0)
+
+int isp1020_detect(Scsi_Host_Template *);
+int isp1020_release(struct Scsi_Host *);
+const char * isp1020_info(struct Scsi_Host *);
+int isp1020_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *));
+int isp1020_abort(Scsi_Cmnd *);
+int isp1020_reset(Scsi_Cmnd *, unsigned int);
+int isp1020_biosparam(Disk *, kdev_t, int[]);
+
+#ifndef NULL
+#define NULL (0)
+#endif
+
+extern struct proc_dir_entry proc_scsi_isp1020;
+
+#define QLOGICISP {							   \
+	/* next */		NULL,					   \
+	/* usage_count */	NULL,					   \
+	/* proc dir */		NULL,					   \
+	/* procfs info */	NULL,					   \
+	/* name */		NULL,					   \
+	/* detect */		isp1020_detect,				   \
+	/* release */		isp1020_release,			   \
+	/* info */		isp1020_info,				   \
+	/* command */		NULL,					   \
+	/* queuecommand */	isp1020_queuecommand,			   \
+	/* abort */		isp1020_abort,				   \
+	/* reset */		isp1020_reset,				   \
+	/* slave_attach */	NULL,					   \
+	/* bios_param */	isp1020_biosparam,			   \
+	/* can_queue */		QLOGICISP_REQ_QUEUE_LEN,		   \
+	/* this_id */		-1,					   \
+	/* sg_tablesize */	QLOGICISP_MAX_SG(QLOGICISP_REQ_QUEUE_LEN), \
+	/* cmd_per_lun */	1,					   \
+	/* present */		0,					   \
+	/* unchecked_isa_dma */	0,					   \
+	/* use_clustering */	DISABLE_CLUSTERING			   \
+}
+
+#endif /* _QLOGICISP_H */