1#ifndef _AHA1542_H_
2#define _AHA1542_H_
3
4#include <linux/types.h>
5
6/* I/O Port interface 4.2 */
7/* READ */
8#define STATUS(base) base
9#define STST	BIT(7)		/* Self Test in Progress */
10#define DIAGF	BIT(6)		/* Internal Diagnostic Failure */
11#define INIT	BIT(5)		/* Mailbox Initialization Required */
12#define IDLE	BIT(4)		/* SCSI Host Adapter Idle */
13#define CDF	BIT(3)		/* Command/Data Out Port Full */
14#define DF	BIT(2)		/* Data In Port Full */
15/* BIT(1) is reserved */
16#define INVDCMD	BIT(0)		/* Invalid H A Command */
17#define STATMASK (STST | DIAGF | INIT | IDLE | CDF | DF | INVDCMD)
18
19#define INTRFLAGS(base) (STATUS(base)+2)
20#define ANYINTR	BIT(7)		/* Any Interrupt */
21#define SCRD	BIT(3)		/* SCSI Reset Detected */
22#define HACC	BIT(2)		/* HA Command Complete */
23#define MBOA	BIT(1)		/* MBO Empty */
24#define MBIF	BIT(0)		/* MBI Full */
25#define INTRMASK (ANYINTR | SCRD | HACC | MBOA | MBIF)
26
27/* WRITE */
28#define CONTROL(base) STATUS(base)
29#define HRST	BIT(7)		/* Hard Reset */
30#define SRST	BIT(6)		/* Soft Reset */
31#define IRST	BIT(5)		/* Interrupt Reset */
32#define SCRST	BIT(4)		/* SCSI Bus Reset */
33
34/* READ/WRITE */
35#define DATA(base) (STATUS(base)+1)
36#define CMD_NOP		0x00	/* No Operation */
37#define CMD_MBINIT	0x01	/* Mailbox Initialization */
38#define CMD_START_SCSI	0x02	/* Start SCSI Command */
39#define CMD_INQUIRY	0x04	/* Adapter Inquiry */
40#define CMD_EMBOI	0x05	/* Enable MailBox Out Interrupt */
41#define CMD_BUSON_TIME	0x07	/* Set Bus-On Time */
42#define CMD_BUSOFF_TIME	0x08	/* Set Bus-Off Time */
43#define CMD_DMASPEED	0x09	/* Set AT Bus Transfer Speed */
44#define CMD_RETDEVS	0x0a	/* Return Installed Devices */
45#define CMD_RETCONF	0x0b	/* Return Configuration Data */
46#define CMD_RETSETUP	0x0d	/* Return Setup Data */
47#define CMD_ECHO	0x1f	/* ECHO Command Data */
48
49#define CMD_EXTBIOS     0x28    /* Return extend bios information only 1542C */
50#define CMD_MBENABLE    0x29    /* Set Mailbox Interface enable only 1542C */
51
52/* Mailbox Definition 5.2.1 and 5.2.2 */
53struct mailbox {
54	u8 status;	/* Command/Status */
55	u8 ccbptr[3];	/* msb, .., lsb */
56};
57
58/* This is used with scatter-gather */
59struct chain {
60	u8 datalen[3];	/* Size of this part of chain */
61	u8 dataptr[3];	/* Location of data */
62};
63
64/* These belong in scsi.h also */
65static inline void any2scsi(u8 *p, u32 v)
66{
67	p[0] = v >> 16;
68	p[1] = v >> 8;
69	p[2] = v;
70}
71
72#define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )
73
74#define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \
75		      + (((long)(up)[2]) <<  8) +  ((long)(up)[3]) )
76
77#define MAX_CDB 12
78#define MAX_SENSE 14
79
80struct ccb {		/* Command Control Block 5.3 */
81	u8 op;		/* Command Control Block Operation Code */
82	u8 idlun;	/* op=0,2:Target Id, op=1:Initiator Id */
83			/* Outbound data transfer, length is checked*/
84			/* Inbound data transfer, length is checked */
85			/* Logical Unit Number */
86	u8 cdblen;	/* SCSI Command Length */
87	u8 rsalen;	/* Request Sense Allocation Length/Disable */
88	u8 datalen[3];	/* Data Length (msb, .., lsb) */
89	u8 dataptr[3];	/* Data Pointer */
90	u8 linkptr[3];	/* Link Pointer */
91	u8 commlinkid;	/* Command Linking Identifier */
92	u8 hastat;	/* Host Adapter Status (HASTAT) */
93	u8 tarstat;	/* Target Device Status */
94	u8 reserved[2];
95	u8 cdb[MAX_CDB+MAX_SENSE];	/* SCSI Command Descriptor Block */
96					/* REQUEST SENSE */
97};
98
99#define AHA1542_REGION_SIZE 4
100#define AHA1542_MAILBOXES 8
101
102#endif /* _AHA1542_H_ */
103