aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi/aha1542.h
blob: b871d2b57f93235652d55761cc66617f2a52c291 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
#ifndef _AHA1542_H

/* $Id: aha1542.h,v 1.1 1992/07/24 06:27:38 root Exp root $
 *
 * Header file for the adaptec 1542 driver for Linux
 *
 * $Log: aha1542.h,v $
 * Revision 1.1  1992/07/24  06:27:38  root
 * Initial revision
 *
 * Revision 1.2  1992/07/04  18:41:49  root
 * Replaced distribution with current drivers
 *
 * Revision 1.3  1992/06/23  23:58:20  root
 * Fixes.
 *
 * Revision 1.2  1992/05/26  22:13:23  root
 * Changed bug that prevented DMA above first 2 mbytes.
 *
 * Revision 1.1  1992/05/22  21:00:29  root
 * Initial revision
 *
 * Revision 1.1  1992/04/24  18:01:50  root
 * Initial revision
 *
 * Revision 1.1  1992/04/02  03:23:13  drew
 * Initial revision
 *
 * Revision 1.3  1992/01/27  14:46:29  tthorn
 * *** empty log message ***
 *
 */

#include <linux/types.h>

/* I/O Port interface 4.2 */
/* READ */
#define STATUS(base) base
#define STST	0x80		/* Self Test in Progress */
#define DIAGF	0x40		/* Internal Diagnostic Failure */
#define INIT	0x20		/* Mailbox Initialization Required */
#define IDLE	0x10		/* SCSI Host Adapter Idle */
#define CDF	0x08		/* Command/Data Out Port Full */
#define DF	0x04		/* Data In Port Full */
#define INVDCMD	0x01		/* Invalid H A Command */
#define STATMASK 0xfd		/* 0x02 is reserved */

#define INTRFLAGS(base) (STATUS(base)+2)
#define ANYINTR	0x80		/* Any Interrupt */
#define SCRD	0x08		/* SCSI Reset Detected */
#define HACC	0x04		/* HA Command Complete */
#define MBOA	0x02		/* MBO Empty */
#define MBIF	0x01		/* MBI Full */
#define INTRMASK 0x8f

/* WRITE */
#define CONTROL(base) STATUS(base)
#define HRST	0x80		/* Hard Reset */
#define SRST	0x40		/* Soft Reset */
#define IRST	0x20		/* Interrupt Reset */
#define SCRST	0x10		/* SCSI Bus Reset */

/* READ/WRITE */
#define DATA(base) (STATUS(base)+1)
#define CMD_NOP		0x00	/* No Operation */
#define CMD_MBINIT	0x01	/* Mailbox Initialization */
#define CMD_START_SCSI	0x02	/* Start SCSI Command */
#define CMD_INQUIRY	0x04	/* Adapter Inquiry */
#define CMD_EMBOI	0x05	/* Enable MailBox Out Interrupt */
#define CMD_BUSON_TIME	0x07	/* Set Bus-On Time */
#define CMD_BUSOFF_TIME	0x08	/* Set Bus-Off Time */
#define CMD_DMASPEED	0x09	/* Set AT Bus Transfer Speed */
#define CMD_RETDEVS	0x0a	/* Return Installed Devices */
#define CMD_RETCONF	0x0b	/* Return Configuration Data */
#define CMD_RETSETUP	0x0d	/* Return Setup Data */
#define CMD_ECHO	0x1f	/* ECHO Command Data */

#define CMD_EXTBIOS     0x28    /* Return extend bios information only 1542C */
#define CMD_MBENABLE    0x29    /* Set Mailbox Interface enable only 1542C */

/* Mailbox Definition 5.2.1 and 5.2.2 */
struct mailbox {
  unchar status;		/* Command/Status */
  unchar ccbptr[3];		/* msb, .., lsb */
};

/* This is used with scatter-gather */
struct chain {
  unchar datalen[3];		/* Size of this part of chain */
  unchar dataptr[3];		/* Location of data */
};

/* These belong in scsi.h also */
static inline void any2scsi(u8 *p, u32 v)
{
	p[0] = v >> 16;
	p[1] = v >> 8;
	p[2] = v;
}

#define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )

#define xany2scsi(up, p)	\
(up)[0] = ((long)(p)) >> 24;	\
(up)[1] = ((long)(p)) >> 16;	\
(up)[2] = ((long)(p)) >> 8;	\
(up)[3] = ((long)(p));

#define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \
		      + (((long)(up)[2]) <<  8) +  ((long)(up)[3]) )

#define MAX_CDB 12
#define MAX_SENSE 14

struct ccb {			/* Command Control Block 5.3 */
  unchar op;			/* Command Control Block Operation Code */
  unchar idlun;			/* op=0,2:Target Id, op=1:Initiator Id */
				/* Outbound data transfer, length is checked*/
				/* Inbound data transfer, length is checked */
				/* Logical Unit Number */
  unchar cdblen;		/* SCSI Command Length */
  unchar rsalen;		/* Request Sense Allocation Length/Disable */
  unchar datalen[3];		/* Data Length (msb, .., lsb) */
  unchar dataptr[3];		/* Data Pointer */
  unchar linkptr[3];		/* Link Pointer */
  unchar commlinkid;		/* Command Linking Identifier */
  unchar hastat;		/* Host Adapter Status (HASTAT) */
  unchar tarstat;		/* Target Device Status */
  unchar reserved[2];
  unchar cdb[MAX_CDB+MAX_SENSE];/* SCSI Command Descriptor Block */
				/* REQUEST SENSE */
};

static int aha1542_detect(struct scsi_host_template *);
static int aha1542_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
static int aha1542_bus_reset(Scsi_Cmnd * SCpnt);
static int aha1542_dev_reset(Scsi_Cmnd * SCpnt);
static int aha1542_host_reset(Scsi_Cmnd * SCpnt);
#if 0
static int aha1542_old_abort(Scsi_Cmnd * SCpnt);
static int aha1542_old_reset(Scsi_Cmnd *, unsigned int);
#endif
static int aha1542_biosparam(struct scsi_device *, struct block_device *,
		sector_t, int *);

#define AHA1542_MAILBOXES 8
#define AHA1542_SCATTER 16
#define AHA1542_CMDLUN 1

#endif