mapped_scsi.h

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
    4  * All Rights Reserved.
    5  * 
    6  * Permission to use, copy, modify and distribute this software and its
    7  * documentation is hereby granted, provided that both the copyright
    8  * notice and this permission notice appear in all copies of the
    9  * software, derivative works or modified versions, and any portions
   10  * thereof, and that both notices appear in supporting documentation.
   11  * 
   12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   15  * 
   16  * Carnegie Mellon requests users of this software to return to
   17  * 
   18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   19  *  School of Computer Science
   20  *  Carnegie Mellon University
   21  *  Pittsburgh PA 15213-3890
   22  * 
   23  * any improvements or extensions that they make and grant Carnegie Mellon
   24  * the rights to redistribute these changes.
   25  */
   26 /*
   27  * HISTORY
   28  * $Log:        mapped_scsi.h,v $
   29  * Revision 2.7  91/10/09  16:16:45  af
   30  *      Define maximum size of mapped region.  The fifo flags
   31  *      for the ASC chip do not change with interrupt ack, the
   32  *      command might.
   33  *      [91/10/05  10:25:03  af]
   34  * 
   35  * Revision 2.6  91/06/19  11:56:46  rvb
   36  *      File moved here from mips/PMAX since it is now "MI" code, also
   37  *      used by Vax3100 and soon -- the omron luna88k.
   38  *      [91/06/04            rvb]
   39  * 
   40  * Revision 2.5  91/05/14  17:24:10  mrt
   41  *      Correcting copyright
   42  * 
   43  * Revision 2.4  91/02/05  17:42:31  mrt
   44  *      Added author notices
   45  *      [91/02/04  11:14:56  mrt]
   46  * 
   47  * Revision 2.3  90/12/05  23:32:32  af
   48  *      Changed to use new Mach copyright
   49  * 
   50  * Revision 2.1.1.1  90/11/13  15:09:49  af
   51  *      Factored out, for user's benefit.
   52  *      [90/11/08            af]
   53  */
   54 /*
   55  *      File: mapped_scsi.h
   56  *      Author: Alessandro Forin, Carnegie Mellon University
   57  *      Date:   11/90
   58  *
   59  *      Definitions for the User-level SCSI Driver
   60  */
   61 
   62 /*
   63  * HBA chips of various sorts
   64  */
   65 
   66 /* DEC 7061 used on pmaxen */
   67 
   68 typedef struct sii_volatile_regs {
   69         unsigned short          sii_conn_csr;
   70         unsigned short          sii_data_csr;
   71 } *sii_reg_t;
   72 
   73 #define HBA_DEC_7061    0x00000001
   74 
   75                                                 /* layout of mapped stuff */
   76 #define SII_REGS_BASE   (SCSI_INFO_BASE+SCSI_INFO_SIZE)
   77 #define SII_REGS_SIZE   PAGE_SIZE
   78 #define SII_RAM_BASE    (SII_REGS_BASE+SII_REGS_SIZE)
   79 
   80 
   81 /* National 53C94, used on 3maxen' PMAZ-AA boards */
   82 
   83 typedef struct asc_volatile_regs {
   84         unsigned char           csr;
   85         unsigned char           isr;
   86         unsigned char           seq;
   87         unsigned char           cmd;
   88 } *asc_reg_t;
   89 
   90 #define HBA_NCR_53c94   0x00000002
   91 
   92                                                 /* layout of mapped stuff */
   93 #define ASC_REGS_BASE   (SCSI_INFO_BASE+SCSI_INFO_SIZE)
   94 #define ASC_REGS_SIZE   PAGE_SIZE
   95 #define ASC_DMAR_BASE   (ASC_REGS_BASE+ASC_REGS_SIZE)
   96 #define ASC_DMAR_SIZE   PAGE_SIZE
   97 #define ASC_RAM_BASE    (ASC_DMAR_BASE+ASC_DMAR_SIZE)
   98 
   99 /*
  100  * User-mapped information block, common to all
  101  */
  102 #define SCSI_INFO_BASE  0
  103 #define SCSI_INFO_SIZE  PAGE_SIZE
  104 
  105 #define SCSI_MAX_MAPPED_SIZE    (ASC_RAM_BASE+128*1024)
  106 
  107 typedef struct {
  108         int                     interrupt_count;/* Counter kept by kernel */
  109         unsigned int            wait_event;     /* To wait for interrupts */
  110         unsigned                ram_size;
  111         int                     hba_type;       /* Tag for regs union */
  112         union {                                 /* Space for regs saved on
  113                                                  * intr.  Only few used */
  114             struct asc_volatile_regs    asc;
  115             struct sii_volatile_regs    sii;
  116         } saved_regs;
  117 } *mapped_scsi_info_t;
  118

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FreeBSD/Linux Kernel Cross Reference sys/scsi/mapped_scsi.h

FreeBSD/Linux Kernel Cross Reference
sys/scsi/mapped_scsi.h