1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _AHA1740_H
3 
4 /* $Id$
5  *
6  * Header file for the adaptec 1740 driver for Linux
7  *
8  * With minor revisions 3/31/93
9  * Written and (C) 1992,1993 Brad McLean.  See aha1740.c
10  * for more info
11  *
12  */
13 
14 #include <linux/types.h>
15 
16 #define SLOTSIZE	0x5c
17 
18 /* EISA configuration registers & values */
19 #define	HID0(base)	(base + 0x0)
20 #define	HID1(base)	(base + 0x1)
21 #define HID2(base)	(base + 0x2)
22 #define	HID3(base)	(base + 0x3)
23 #define	EBCNTRL(base)	(base + 0x4)
24 #define	PORTADR(base)	(base + 0x40)
25 #define BIOSADR(base)	(base + 0x41)
26 #define INTDEF(base)	(base + 0x42)
27 #define SCSIDEF(base)	(base + 0x43)
28 #define BUSDEF(base)	(base + 0x44)
29 #define	RESV0(base)	(base + 0x45)
30 #define RESV1(base)	(base + 0x46)
31 #define	RESV2(base)	(base + 0x47)
32 
33 #define	HID_MFG	"ADP"
34 #define	HID_PRD 0
35 #define HID_REV 2
36 #define EBCNTRL_VALUE 1
37 #define PORTADDR_ENH 0x80
38 /* READ */
39 #define	G2INTST(base)	(base + 0x56)
40 #define G2STAT(base)	(base + 0x57)
41 #define	MBOXIN0(base)	(base + 0x58)
42 #define	MBOXIN1(base)	(base + 0x59)
43 #define	MBOXIN2(base)	(base + 0x5a)
44 #define	MBOXIN3(base)	(base + 0x5b)
45 #define G2STAT2(base)	(base + 0x5c)
46 
47 #define G2INTST_MASK		0xf0	/* isolate the status */
48 #define	G2INTST_CCBGOOD		0x10	/* CCB Completed */
49 #define	G2INTST_CCBRETRY	0x50	/* CCB Completed with a retry */
50 #define	G2INTST_HARDFAIL	0x70	/* Adapter Hardware Failure */
51 #define	G2INTST_CMDGOOD		0xa0	/* Immediate command success */
52 #define G2INTST_CCBERROR	0xc0	/* CCB Completed with error */
53 #define	G2INTST_ASNEVENT	0xd0	/* Asynchronous Event Notification */
54 #define	G2INTST_CMDERROR	0xe0	/* Immediate command error */
55 
56 #define G2STAT_MBXOUT	4	/* Mailbox Out Empty Bit */
57 #define	G2STAT_INTPEND	2	/* Interrupt Pending Bit */
58 #define	G2STAT_BUSY	1	/* Busy Bit (attention pending) */
59 
60 #define G2STAT2_READY	0	/* Host Ready Bit */
61 
62 /* WRITE (and ReadBack) */
63 #define	MBOXOUT0(base)	(base + 0x50)
64 #define	MBOXOUT1(base)	(base + 0x51)
65 #define	MBOXOUT2(base)	(base + 0x52)
66 #define	MBOXOUT3(base)	(base + 0x53)
67 #define	ATTN(base)	(base + 0x54)
68 #define G2CNTRL(base)	(base + 0x55)
69 
70 #define	ATTN_IMMED	0x10	/* Immediate Command */
71 #define	ATTN_START	0x40	/* Start CCB */
72 #define	ATTN_ABORT	0x50	/* Abort CCB */
73 
74 #define G2CNTRL_HRST	0x80	/* Hard Reset */
75 #define G2CNTRL_IRST	0x40	/* Clear EISA Interrupt */
76 #define G2CNTRL_HRDY	0x20	/* Sets HOST ready */
77 
78 /* This is used with scatter-gather */
79 struct aha1740_chain {
80 	u32 dataptr;		/* Location of data */
81 	u32 datalen;		/* Size of this part of chain */
82 };
83 
84 /* These belong in scsi.h */
85 #define any2scsi(up, p)				\
86 (up)[0] = (((unsigned long)(p)) >> 16)  ;	\
87 (up)[1] = (((unsigned long)(p)) >> 8);		\
88 (up)[2] = ((unsigned long)(p));
89 
90 #define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )
91 
92 #define xany2scsi(up, p)	\
93 (up)[0] = ((long)(p)) >> 24;	\
94 (up)[1] = ((long)(p)) >> 16;	\
95 (up)[2] = ((long)(p)) >> 8;	\
96 (up)[3] = ((long)(p));
97 
98 #define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \
99 		      + (((long)(up)[2]) <<  8) +  ((long)(up)[3]) )
100 
101 #define MAX_CDB 12
102 #define MAX_SENSE 14
103 #define MAX_STATUS 32
104 
105 struct ecb {			/* Enhanced Control Block 6.1 */
106 	u16 cmdw;		/* Command Word */
107 	/* Flag Word 1 */
108 	u16 cne:1,		/* Control Block Chaining */
109 	:6, di:1,		/* Disable Interrupt */
110 	:2, ses:1,		/* Suppress Underrun error */
111 	:1, sg:1,		/* Scatter/Gather */
112 	:1, dsb:1,		/* Disable Status Block */
113 	 ars:1;			/* Automatic Request Sense */
114 	/* Flag Word 2 */
115 	u16 lun:3,		/* Logical Unit */
116 	 tag:1,			/* Tagged Queuing */
117 	 tt:2,			/* Tag Type */
118 	 nd:1,			/* No Disconnect */
119 	:1, dat:1,		/* Data transfer - check direction */
120 	 dir:1,			/* Direction of transfer 1 = datain */
121 	 st:1,			/* Suppress Transfer */
122 	 chk:1,			/* Calculate Checksum */
123 	:2, rec:1,:1;		/* Error Recovery */
124 	u16 nil0;		/* nothing */
125 	u32 dataptr;		/* Data or Scatter List ptr */
126 	u32 datalen;		/* Data or Scatter List len */
127 	u32 statusptr;		/* Status Block ptr */
128 	u32 linkptr;		/* Chain Address */
129 	u32 nil1;		/* nothing */
130 	u32 senseptr;		/* Sense Info Pointer */
131 	u8 senselen;		/* Sense Length */
132 	u8 cdblen;		/* CDB Length */
133 	u16 datacheck;		/* Data checksum */
134 	u8 cdb[MAX_CDB];	/* CDB area */
135 /* Hardware defined portion ends here, rest is driver defined */
136 	u8 sense[MAX_SENSE];	/* Sense area */
137 	u8 status[MAX_STATUS];	/* Status area */
138 	struct scsi_cmnd *SCpnt;	/* Link to the SCSI Command Block */
139 	void (*done) (struct scsi_cmnd *);	/* Completion Function */
140 };
141 
142 #define	AHA1740CMD_NOP	 0x00	/* No OP */
143 #define AHA1740CMD_INIT	 0x01	/* Initiator SCSI Command */
144 #define AHA1740CMD_DIAG	 0x05	/* Run Diagnostic Command */
145 #define AHA1740CMD_SCSI	 0x06	/* Initialize SCSI */
146 #define AHA1740CMD_SENSE 0x08	/* Read Sense Information */
147 #define AHA1740CMD_DOWN  0x09	/* Download Firmware (yeah, I bet!) */
148 #define AHA1740CMD_RINQ  0x0a	/* Read Host Adapter Inquiry Data */
149 #define AHA1740CMD_TARG  0x10	/* Target SCSI Command */
150 
151 #define AHA1740_ECBS 32
152 #define AHA1740_SCATTER 16
153 
154 #endif
155