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(Scsi_Cmnd *, void (*done)(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
151
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