151 lines
4.7 KiB
C
151 lines
4.7 KiB
C
#ifndef _AHA1542_H
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/* $Id: aha1542.h,v 1.1 1992/07/24 06:27:38 root Exp root $
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*
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* Header file for the adaptec 1542 driver for Linux
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*
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* $Log: aha1542.h,v $
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* Revision 1.1 1992/07/24 06:27:38 root
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* Initial revision
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*
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* Revision 1.2 1992/07/04 18:41:49 root
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* Replaced distribution with current drivers
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*
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* Revision 1.3 1992/06/23 23:58:20 root
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* Fixes.
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*
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* Revision 1.2 1992/05/26 22:13:23 root
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* Changed bug that prevented DMA above first 2 mbytes.
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*
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* Revision 1.1 1992/05/22 21:00:29 root
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* Initial revision
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*
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* Revision 1.1 1992/04/24 18:01:50 root
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* Initial revision
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*
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* Revision 1.1 1992/04/02 03:23:13 drew
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* Initial revision
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*
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* Revision 1.3 1992/01/27 14:46:29 tthorn
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* *** empty log message ***
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*
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*/
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#include <linux/types.h>
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/* I/O Port interface 4.2 */
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/* READ */
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#define STATUS(base) base
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#define STST 0x80 /* Self Test in Progress */
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#define DIAGF 0x40 /* Internal Diagnostic Failure */
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#define INIT 0x20 /* Mailbox Initialization Required */
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#define IDLE 0x10 /* SCSI Host Adapter Idle */
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#define CDF 0x08 /* Command/Data Out Port Full */
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#define DF 0x04 /* Data In Port Full */
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#define INVDCMD 0x01 /* Invalid H A Command */
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#define STATMASK 0xfd /* 0x02 is reserved */
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#define INTRFLAGS(base) (STATUS(base)+2)
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#define ANYINTR 0x80 /* Any Interrupt */
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#define SCRD 0x08 /* SCSI Reset Detected */
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#define HACC 0x04 /* HA Command Complete */
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#define MBOA 0x02 /* MBO Empty */
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#define MBIF 0x01 /* MBI Full */
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#define INTRMASK 0x8f
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/* WRITE */
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#define CONTROL(base) STATUS(base)
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#define HRST 0x80 /* Hard Reset */
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#define SRST 0x40 /* Soft Reset */
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#define IRST 0x20 /* Interrupt Reset */
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#define SCRST 0x10 /* SCSI Bus Reset */
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/* READ/WRITE */
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#define DATA(base) (STATUS(base)+1)
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#define CMD_NOP 0x00 /* No Operation */
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#define CMD_MBINIT 0x01 /* Mailbox Initialization */
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#define CMD_START_SCSI 0x02 /* Start SCSI Command */
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#define CMD_INQUIRY 0x04 /* Adapter Inquiry */
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#define CMD_EMBOI 0x05 /* Enable MailBox Out Interrupt */
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#define CMD_BUSON_TIME 0x07 /* Set Bus-On Time */
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#define CMD_BUSOFF_TIME 0x08 /* Set Bus-Off Time */
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#define CMD_DMASPEED 0x09 /* Set AT Bus Transfer Speed */
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#define CMD_RETDEVS 0x0a /* Return Installed Devices */
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#define CMD_RETCONF 0x0b /* Return Configuration Data */
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#define CMD_RETSETUP 0x0d /* Return Setup Data */
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#define CMD_ECHO 0x1f /* ECHO Command Data */
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#define CMD_EXTBIOS 0x28 /* Return extend bios information only 1542C */
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#define CMD_MBENABLE 0x29 /* Set Mailbox Interface enable only 1542C */
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/* Mailbox Definition 5.2.1 and 5.2.2 */
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struct mailbox {
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unchar status; /* Command/Status */
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unchar ccbptr[3]; /* msb, .., lsb */
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};
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/* This is used with scatter-gather */
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struct chain {
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unchar datalen[3]; /* Size of this part of chain */
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unchar dataptr[3]; /* Location of data */
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};
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/* These belong in scsi.h also */
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static inline void any2scsi(u8 *p, u32 v)
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{
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p[0] = v >> 16;
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p[1] = v >> 8;
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p[2] = v;
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}
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#define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )
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#define xany2scsi(up, p) \
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(up)[0] = ((long)(p)) >> 24; \
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(up)[1] = ((long)(p)) >> 16; \
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(up)[2] = ((long)(p)) >> 8; \
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(up)[3] = ((long)(p));
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#define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \
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+ (((long)(up)[2]) << 8) + ((long)(up)[3]) )
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#define MAX_CDB 12
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#define MAX_SENSE 14
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struct ccb { /* Command Control Block 5.3 */
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unchar op; /* Command Control Block Operation Code */
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unchar idlun; /* op=0,2:Target Id, op=1:Initiator Id */
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/* Outbound data transfer, length is checked*/
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/* Inbound data transfer, length is checked */
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/* Logical Unit Number */
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unchar cdblen; /* SCSI Command Length */
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unchar rsalen; /* Request Sense Allocation Length/Disable */
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unchar datalen[3]; /* Data Length (msb, .., lsb) */
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unchar dataptr[3]; /* Data Pointer */
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unchar linkptr[3]; /* Link Pointer */
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unchar commlinkid; /* Command Linking Identifier */
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unchar hastat; /* Host Adapter Status (HASTAT) */
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unchar tarstat; /* Target Device Status */
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unchar reserved[2];
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unchar cdb[MAX_CDB+MAX_SENSE];/* SCSI Command Descriptor Block */
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/* REQUEST SENSE */
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};
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static int aha1542_detect(struct scsi_host_template *);
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static int aha1542_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
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static int aha1542_bus_reset(Scsi_Cmnd * SCpnt);
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static int aha1542_dev_reset(Scsi_Cmnd * SCpnt);
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static int aha1542_host_reset(Scsi_Cmnd * SCpnt);
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#if 0
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static int aha1542_old_abort(Scsi_Cmnd * SCpnt);
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static int aha1542_old_reset(Scsi_Cmnd *, unsigned int);
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#endif
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static int aha1542_biosparam(struct scsi_device *, struct block_device *,
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sector_t, int *);
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#define AHA1542_MAILBOXES 8
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#define AHA1542_SCATTER 16
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#define AHA1542_CMDLUN 1
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#endif
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