1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/types.h>
7 /* I/O Port interface 4.2 */
9 #define STATUS(base) base
10 #define STST BIT(7) /* Self Test in Progress */
11 #define DIAGF BIT(6) /* Internal Diagnostic Failure */
12 #define INIT BIT(5) /* Mailbox Initialization Required */
13 #define IDLE BIT(4) /* SCSI Host Adapter Idle */
14 #define CDF BIT(3) /* Command/Data Out Port Full */
15 #define DF BIT(2) /* Data In Port Full */
16 /* BIT(1) is reserved */
17 #define INVDCMD BIT(0) /* Invalid H A Command */
18 #define STATMASK (STST | DIAGF | INIT | IDLE | CDF | DF | INVDCMD)
20 #define INTRFLAGS(base) (STATUS(base)+2)
21 #define ANYINTR BIT(7) /* Any Interrupt */
22 #define SCRD BIT(3) /* SCSI Reset Detected */
23 #define HACC BIT(2) /* HA Command Complete */
24 #define MBOA BIT(1) /* MBO Empty */
25 #define MBIF BIT(0) /* MBI Full */
26 #define INTRMASK (ANYINTR | SCRD | HACC | MBOA | MBIF)
29 #define CONTROL(base) STATUS(base)
30 #define HRST BIT(7) /* Hard Reset */
31 #define SRST BIT(6) /* Soft Reset */
32 #define IRST BIT(5) /* Interrupt Reset */
33 #define SCRST BIT(4) /* SCSI Bus Reset */
36 #define DATA(base) (STATUS(base)+1)
37 #define CMD_NOP 0x00 /* No Operation */
38 #define CMD_MBINIT 0x01 /* Mailbox Initialization */
39 #define CMD_START_SCSI 0x02 /* Start SCSI Command */
40 #define CMD_INQUIRY 0x04 /* Adapter Inquiry */
41 #define CMD_EMBOI 0x05 /* Enable MailBox Out Interrupt */
42 #define CMD_BUSON_TIME 0x07 /* Set Bus-On Time */
43 #define CMD_BUSOFF_TIME 0x08 /* Set Bus-Off Time */
44 #define CMD_DMASPEED 0x09 /* Set AT Bus Transfer Speed */
45 #define CMD_RETDEVS 0x0a /* Return Installed Devices */
46 #define CMD_RETCONF 0x0b /* Return Configuration Data */
47 #define CMD_RETSETUP 0x0d /* Return Setup Data */
48 #define CMD_ECHO 0x1f /* ECHO Command Data */
50 #define CMD_EXTBIOS 0x28 /* Return extend bios information only 1542C */
51 #define CMD_MBENABLE 0x29 /* Set Mailbox Interface enable only 1542C */
53 /* Mailbox Definition 5.2.1 and 5.2.2 */
55 u8 status; /* Command/Status */
56 u8 ccbptr[3]; /* msb, .., lsb */
59 /* This is used with scatter-gather */
61 u8 datalen[3]; /* Size of this part of chain */
62 u8 dataptr[3]; /* Location of data */
65 /* These belong in scsi.h also */
66 static inline void any2scsi(u8 *p, u32 v)
73 #define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )
75 #define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \
76 + (((long)(up)[2]) << 8) + ((long)(up)[3]) )
81 /* Command Control Block (CCB), 5.3 */
83 u8 op; /* Command Control Block Operation Code: */
84 /* 0x00: SCSI Initiator CCB, 0x01: SCSI Target CCB, */
85 /* 0x02: SCSI Initiator CCB with Scatter/Gather, */
86 /* 0x81: SCSI Bus Device Reset CCB */
87 u8 idlun; /* Address and Direction Control: */
88 /* Bits 7-5: op=0, 2: Target ID, op=1: Initiator ID */
89 /* Bit 4: Outbound data transfer, length is checked */
90 /* Bit 3: Inbound data transfer, length is checked */
91 /* Bits 2-0: Logical Unit Number */
92 u8 cdblen; /* SCSI Command Length */
93 u8 rsalen; /* Request Sense Allocation Length/Disable Auto Sense */
94 u8 datalen[3]; /* Data Length (MSB, ..., LSB) */
95 u8 dataptr[3]; /* Data Pointer (MSB, ..., LSB) */
96 u8 linkptr[3]; /* Link Pointer (MSB, ..., LSB) */
97 u8 commlinkid; /* Command Linking Identifier */
98 u8 hastat; /* Host Adapter Status (HASTAT) */
99 u8 tarstat; /* Target Device Status (TARSTAT) */
101 u8 cdb[MAX_CDB + MAX_SENSE]; /* SCSI Command Descriptor Block */
102 /* followed by the Auto Sense data */
105 #define AHA1542_REGION_SIZE 4
106 #define AHA1542_MAILBOXES 8
108 #endif /* _AHA1542_H_ */