1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _AHA1542_H_
3*4882a593Smuzhiyun #define _AHA1542_H_
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <linux/types.h>
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun /* I/O Port interface 4.2 */
8*4882a593Smuzhiyun /* READ */
9*4882a593Smuzhiyun #define STATUS(base) base
10*4882a593Smuzhiyun #define STST BIT(7) /* Self Test in Progress */
11*4882a593Smuzhiyun #define DIAGF BIT(6) /* Internal Diagnostic Failure */
12*4882a593Smuzhiyun #define INIT BIT(5) /* Mailbox Initialization Required */
13*4882a593Smuzhiyun #define IDLE BIT(4) /* SCSI Host Adapter Idle */
14*4882a593Smuzhiyun #define CDF BIT(3) /* Command/Data Out Port Full */
15*4882a593Smuzhiyun #define DF BIT(2) /* Data In Port Full */
16*4882a593Smuzhiyun /* BIT(1) is reserved */
17*4882a593Smuzhiyun #define INVDCMD BIT(0) /* Invalid H A Command */
18*4882a593Smuzhiyun #define STATMASK (STST | DIAGF | INIT | IDLE | CDF | DF | INVDCMD)
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun #define INTRFLAGS(base) (STATUS(base)+2)
21*4882a593Smuzhiyun #define ANYINTR BIT(7) /* Any Interrupt */
22*4882a593Smuzhiyun #define SCRD BIT(3) /* SCSI Reset Detected */
23*4882a593Smuzhiyun #define HACC BIT(2) /* HA Command Complete */
24*4882a593Smuzhiyun #define MBOA BIT(1) /* MBO Empty */
25*4882a593Smuzhiyun #define MBIF BIT(0) /* MBI Full */
26*4882a593Smuzhiyun #define INTRMASK (ANYINTR | SCRD | HACC | MBOA | MBIF)
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun /* WRITE */
29*4882a593Smuzhiyun #define CONTROL(base) STATUS(base)
30*4882a593Smuzhiyun #define HRST BIT(7) /* Hard Reset */
31*4882a593Smuzhiyun #define SRST BIT(6) /* Soft Reset */
32*4882a593Smuzhiyun #define IRST BIT(5) /* Interrupt Reset */
33*4882a593Smuzhiyun #define SCRST BIT(4) /* SCSI Bus Reset */
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun /* READ/WRITE */
36*4882a593Smuzhiyun #define DATA(base) (STATUS(base)+1)
37*4882a593Smuzhiyun #define CMD_NOP 0x00 /* No Operation */
38*4882a593Smuzhiyun #define CMD_MBINIT 0x01 /* Mailbox Initialization */
39*4882a593Smuzhiyun #define CMD_START_SCSI 0x02 /* Start SCSI Command */
40*4882a593Smuzhiyun #define CMD_INQUIRY 0x04 /* Adapter Inquiry */
41*4882a593Smuzhiyun #define CMD_EMBOI 0x05 /* Enable MailBox Out Interrupt */
42*4882a593Smuzhiyun #define CMD_BUSON_TIME 0x07 /* Set Bus-On Time */
43*4882a593Smuzhiyun #define CMD_BUSOFF_TIME 0x08 /* Set Bus-Off Time */
44*4882a593Smuzhiyun #define CMD_DMASPEED 0x09 /* Set AT Bus Transfer Speed */
45*4882a593Smuzhiyun #define CMD_RETDEVS 0x0a /* Return Installed Devices */
46*4882a593Smuzhiyun #define CMD_RETCONF 0x0b /* Return Configuration Data */
47*4882a593Smuzhiyun #define CMD_RETSETUP 0x0d /* Return Setup Data */
48*4882a593Smuzhiyun #define CMD_ECHO 0x1f /* ECHO Command Data */
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun #define CMD_EXTBIOS 0x28 /* Return extend bios information only 1542C */
51*4882a593Smuzhiyun #define CMD_MBENABLE 0x29 /* Set Mailbox Interface enable only 1542C */
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun /* Mailbox Definition 5.2.1 and 5.2.2 */
54*4882a593Smuzhiyun struct mailbox {
55*4882a593Smuzhiyun u8 status; /* Command/Status */
56*4882a593Smuzhiyun u8 ccbptr[3]; /* msb, .., lsb */
57*4882a593Smuzhiyun };
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun /* This is used with scatter-gather */
60*4882a593Smuzhiyun struct chain {
61*4882a593Smuzhiyun u8 datalen[3]; /* Size of this part of chain */
62*4882a593Smuzhiyun u8 dataptr[3]; /* Location of data */
63*4882a593Smuzhiyun };
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun /* These belong in scsi.h also */
any2scsi(u8 * p,u32 v)66*4882a593Smuzhiyun static inline void any2scsi(u8 *p, u32 v)
67*4882a593Smuzhiyun {
68*4882a593Smuzhiyun p[0] = v >> 16;
69*4882a593Smuzhiyun p[1] = v >> 8;
70*4882a593Smuzhiyun p[2] = v;
71*4882a593Smuzhiyun }
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun #define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun #define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \
76*4882a593Smuzhiyun + (((long)(up)[2]) << 8) + ((long)(up)[3]) )
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun #define MAX_CDB 12
79*4882a593Smuzhiyun #define MAX_SENSE 14
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun struct ccb { /* Command Control Block 5.3 */
82*4882a593Smuzhiyun u8 op; /* Command Control Block Operation Code */
83*4882a593Smuzhiyun u8 idlun; /* op=0,2:Target Id, op=1:Initiator Id */
84*4882a593Smuzhiyun /* Outbound data transfer, length is checked*/
85*4882a593Smuzhiyun /* Inbound data transfer, length is checked */
86*4882a593Smuzhiyun /* Logical Unit Number */
87*4882a593Smuzhiyun u8 cdblen; /* SCSI Command Length */
88*4882a593Smuzhiyun u8 rsalen; /* Request Sense Allocation Length/Disable */
89*4882a593Smuzhiyun u8 datalen[3]; /* Data Length (msb, .., lsb) */
90*4882a593Smuzhiyun u8 dataptr[3]; /* Data Pointer */
91*4882a593Smuzhiyun u8 linkptr[3]; /* Link Pointer */
92*4882a593Smuzhiyun u8 commlinkid; /* Command Linking Identifier */
93*4882a593Smuzhiyun u8 hastat; /* Host Adapter Status (HASTAT) */
94*4882a593Smuzhiyun u8 tarstat; /* Target Device Status */
95*4882a593Smuzhiyun u8 reserved[2];
96*4882a593Smuzhiyun u8 cdb[MAX_CDB+MAX_SENSE]; /* SCSI Command Descriptor Block */
97*4882a593Smuzhiyun /* REQUEST SENSE */
98*4882a593Smuzhiyun };
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun #define AHA1542_REGION_SIZE 4
101*4882a593Smuzhiyun #define AHA1542_MAILBOXES 8
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun #endif /* _AHA1542_H_ */
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