diff options
Diffstat (limited to 'scsi/mapped_scsi.h')
| -rw-r--r-- | scsi/mapped_scsi.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/scsi/mapped_scsi.h b/scsi/mapped_scsi.h new file mode 100644 index 0000000..b9c6528 --- /dev/null +++ b/scsi/mapped_scsi.h @@ -0,0 +1,90 @@ +/* + * 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; + |