Initial source

1 files changed, 90 insertions, 0 deletions

diff --git a/scsi/mapped_scsi.h b/scsi/mapped_scsi.h
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+++ b/scsi/mapped_scsi.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * 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 Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *	File: mapped_scsi.h
+ * 	Author: Alessandro Forin, Carnegie Mellon University
+ *	Date:	11/90
+ *
+ *	Definitions for the User-level SCSI Driver
+ */
+
+/*
+ * HBA chips of various sorts
+ */
+
+/* DEC 7061 used on pmaxen */
+
+typedef struct sii_volatile_regs {
+	unsigned short		sii_conn_csr;
+	unsigned short		sii_data_csr;
+} *sii_reg_t;
+
+#define	HBA_DEC_7061	0x00000001
+
+						/* layout of mapped stuff */
+#define	SII_REGS_BASE	(SCSI_INFO_BASE+SCSI_INFO_SIZE)
+#define	SII_REGS_SIZE	PAGE_SIZE
+#define	SII_RAM_BASE	(SII_REGS_BASE+SII_REGS_SIZE)
+
+
+/* National 53C94, used on 3maxen' PMAZ-AA boards */
+
+typedef struct asc_volatile_regs {
+	unsigned char		csr;
+	unsigned char		isr;
+	unsigned char		seq;
+	unsigned char		cmd;
+} *asc_reg_t;
+
+#define	HBA_NCR_53c94	0x00000002
+
+						/* layout of mapped stuff */
+#define	ASC_REGS_BASE	(SCSI_INFO_BASE+SCSI_INFO_SIZE)
+#define	ASC_REGS_SIZE	PAGE_SIZE
+#define	ASC_DMAR_BASE	(ASC_REGS_BASE+ASC_REGS_SIZE)
+#define	ASC_DMAR_SIZE	PAGE_SIZE
+#define	ASC_RAM_BASE	(ASC_DMAR_BASE+ASC_DMAR_SIZE)
+
+/*
+ * User-mapped information block, common to all
+ */
+#define	SCSI_INFO_BASE	0
+#define	SCSI_INFO_SIZE	PAGE_SIZE
+
+#define	SCSI_MAX_MAPPED_SIZE	(ASC_RAM_BASE+128*1024)
+
+typedef struct {
+	int			interrupt_count;/* Counter kept by kernel */
+	unsigned int		wait_event;	/* To wait for interrupts */
+	unsigned		ram_size;
+	int			hba_type;	/* Tag for regs union */
+	union {					/* Space for regs saved on
+						 * intr.  Only few used */
+	    struct asc_volatile_regs	asc;
+	    struct sii_volatile_regs	sii;
+	} saved_regs;
+} *mapped_scsi_info_t;
+