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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;
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