drivers/scsi/aha1542.h

   1 #ifndef _AHA1542_H
   2
   3 /* $Id: aha1542.h,v 1.1 1992/07/24 06:27:38 root Exp root $
   4  *
   5  * Header file for the adaptec 1542 driver for Linux
   6  *
   7  * $Log: aha1542.h,v $
   8  * Revision 1.1  1992/07/24  06:27:38  root
   9  * Initial revision
  10  *
  11  * Revision 1.2  1992/07/04  18:41:49  root
  12  * Replaced distribution with current drivers
  13  *
  14  * Revision 1.3  1992/06/23  23:58:20  root
  15  * Fixes.
  16  *
  17  * Revision 1.2  1992/05/26  22:13:23  root
  18  * Changed bug that prevented DMA above first 2 mbytes.
  19  *
  20  * Revision 1.1  1992/05/22  21:00:29  root
  21  * Initial revision
  22  *
  23  * Revision 1.1  1992/04/24  18:01:50  root
  24  * Initial revision
  25  *
  26  * Revision 1.1  1992/04/02  03:23:13  drew
  27  * Initial revision
  28  *
  29  * Revision 1.3  1992/01/27  14:46:29  tthorn
  30  * *** empty log message ***
  31  *
  32  */
  33
  34 #include <linux/types.h>
  35
  36 /* I/O Port interface 4.2 */
  37 /* READ */
  38 #define STATUS(base) base
  39 #define STST    0x80            /* Self Test in Progress */
  40 #define DIAGF   0x40            /* Internal Diagnostic Failure */
  41 #define INIT    0x20            /* Mailbox Initialization Required */
  42 #define IDLE    0x10            /* SCSI Host Adapter Idle */
  43 #define CDF     0x08            /* Command/Data Out Port Full */
  44 #define DF      0x04            /* Data In Port Full */
  45 #define INVDCMD 0x01            /* Invalid H A Command */
  46 #define STATMASK 0xfd           /* 0x02 is reserved */
  47
  48 #define INTRFLAGS(base) (STATUS(base)+2)
  49 #define ANYINTR 0x80            /* Any Interrupt */
  50 #define SCRD    0x08            /* SCSI Reset Detected */
  51 #define HACC    0x04            /* HA Command Complete */
  52 #define MBOA    0x02            /* MBO Empty */
  53 #define MBIF    0x01            /* MBI Full */
  54 #define INTRMASK 0x8f
  55
  56 /* WRITE */
  57 #define CONTROL(base) STATUS(base)
  58 #define HRST    0x80            /* Hard Reset */
  59 #define SRST    0x40            /* Soft Reset */
  60 #define IRST    0x20            /* Interrupt Reset */
  61 #define SCRST   0x10            /* SCSI Bus Reset */
  62
  63 /* READ/WRITE */
  64 #define DATA(base) (STATUS(base)+1)
  65 #define CMD_NOP         0x00    /* No Operation */
  66 #define CMD_MBINIT      0x01    /* Mailbox Initialization */
  67 #define CMD_START_SCSI  0x02    /* Start SCSI Command */
  68 #define CMD_INQUIRY     0x04    /* Adapter Inquiry */
  69 #define CMD_EMBOI       0x05    /* Enable MailBox Out Interrupt */
  70 #define CMD_BUSON_TIME  0x07    /* Set Bus-On Time */
  71 #define CMD_BUSOFF_TIME 0x08    /* Set Bus-Off Time */
  72 #define CMD_DMASPEED    0x09    /* Set AT Bus Transfer Speed */
  73 #define CMD_RETDEVS     0x0a    /* Return Installed Devices */
  74 #define CMD_RETCONF     0x0b    /* Return Configuration Data */
  75 #define CMD_RETSETUP    0x0d    /* Return Setup Data */
  76 #define CMD_ECHO        0x1f    /* ECHO Command Data */
  77
  78 #define CMD_EXTBIOS     0x28    /* Return extend bios information only 1542C */
  79 #define CMD_MBENABLE    0x29    /* Set Mailbox Interface enable only 1542C */
  80
  81 /* Mailbox Definition 5.2.1 and 5.2.2 */
  82 struct mailbox {
  83   unchar status;                /* Command/Status */
  84   unchar ccbptr[3];             /* msb, .., lsb */
  85 };
  86
  87 /* This is used with scatter-gather */
  88 struct chain {
  89   unchar datalen[3];            /* Size of this part of chain */
  90   unchar dataptr[3];            /* Location of data */
  91 };
  92
  93 /* These belong in scsi.h also */
  94 static inline void any2scsi(u8 *p, u32 v)
  95 {
  96         p[0] = v >> 16;
  97         p[1] = v >> 8;
  98         p[2] = v;
  99 }
 100
 101 #define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )
 102
 103 #define xany2scsi(up, p)        \
 104 (up)[0] = ((long)(p)) >> 24;    \
 105 (up)[1] = ((long)(p)) >> 16;    \
 106 (up)[2] = ((long)(p)) >> 8;     \
 107 (up)[3] = ((long)(p));
 108
 109 #define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \
 110                       + (((long)(up)[2]) <<  8) +  ((long)(up)[3]) )
 111
 112 #define MAX_CDB 12
 113 #define MAX_SENSE 14
 114
 115 struct ccb {                    /* Command Control Block 5.3 */
 116   unchar op;                    /* Command Control Block Operation Code */
 117   unchar idlun;                 /* op=0,2:Target Id, op=1:Initiator Id */
 118                                 /* Outbound data transfer, length is checked*/
 119                                 /* Inbound data transfer, length is checked */
 120                                 /* Logical Unit Number */
 121   unchar cdblen;                /* SCSI Command Length */
 122   unchar rsalen;                /* Request Sense Allocation Length/Disable */
 123   unchar datalen[3];            /* Data Length (msb, .., lsb) */
 124   unchar dataptr[3];            /* Data Pointer */
 125   unchar linkptr[3];            /* Link Pointer */
 126   unchar commlinkid;            /* Command Linking Identifier */
 127   unchar hastat;                /* Host Adapter Status (HASTAT) */
 128   unchar tarstat;               /* Target Device Status */
 129   unchar reserved[2];
 130   unchar cdb[MAX_CDB+MAX_SENSE];/* SCSI Command Descriptor Block */
 131                                 /* REQUEST SENSE */
 132 };
 133
 134 static int aha1542_detect(struct scsi_host_template *);
 135 static int aha1542_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
 136 static int aha1542_bus_reset(Scsi_Cmnd * SCpnt);
 137 static int aha1542_dev_reset(Scsi_Cmnd * SCpnt);
 138 static int aha1542_host_reset(Scsi_Cmnd * SCpnt);
 139 #if 0
 140 static int aha1542_old_abort(Scsi_Cmnd * SCpnt);
 141 static int aha1542_old_reset(Scsi_Cmnd *, unsigned int);
 142 #endif
 143 static int aha1542_biosparam(struct scsi_device *, struct block_device *,
 144                 sector_t, int *);
 145
 146 #define AHA1542_MAILBOXES 8
 147 #define AHA1542_SCATTER 16
 148 #define AHA1542_CMDLUN 1
 149
 150 #endif