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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
e51dacbf OZ |
2 | #ifndef _AHA1542_H_ |
3 | #define _AHA1542_H_ | |
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4 | |
5 | #include <linux/types.h> | |
6 | ||
7 | /* I/O Port interface 4.2 */ | |
8 | /* READ */ | |
9 | #define STATUS(base) base | |
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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) | |
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19 | |
20 | #define INTRFLAGS(base) (STATUS(base)+2) | |
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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) | |
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27 | |
28 | /* WRITE */ | |
29 | #define CONTROL(base) STATUS(base) | |
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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 */ | |
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34 | |
35 | /* READ/WRITE */ | |
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 */ | |
49 | ||
50 | #define CMD_EXTBIOS 0x28 /* Return extend bios information only 1542C */ | |
51 | #define CMD_MBENABLE 0x29 /* Set Mailbox Interface enable only 1542C */ | |
52 | ||
53 | /* Mailbox Definition 5.2.1 and 5.2.2 */ | |
54 | struct mailbox { | |
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55 | u8 status; /* Command/Status */ |
56 | u8 ccbptr[3]; /* msb, .., lsb */ | |
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57 | }; |
58 | ||
59 | /* This is used with scatter-gather */ | |
60 | struct chain { | |
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61 | u8 datalen[3]; /* Size of this part of chain */ |
62 | u8 dataptr[3]; /* Location of data */ | |
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63 | }; |
64 | ||
65 | /* These belong in scsi.h also */ | |
66 | static inline void any2scsi(u8 *p, u32 v) | |
67 | { | |
68 | p[0] = v >> 16; | |
69 | p[1] = v >> 8; | |
70 | p[2] = v; | |
71 | } | |
72 | ||
73 | #define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) ) | |
74 | ||
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75 | #define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \ |
76 | + (((long)(up)[2]) << 8) + ((long)(up)[3]) ) | |
77 | ||
78 | #define MAX_CDB 12 | |
79 | #define MAX_SENSE 14 | |
80 | ||
5637d5b7 SS |
81 | /* Command Control Block (CCB), 5.3 */ |
82 | struct ccb { | |
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 */ | |
cb5b570c | 92 | u8 cdblen; /* SCSI Command Length */ |
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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) */ | |
cb5b570c | 97 | u8 commlinkid; /* Command Linking Identifier */ |
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98 | u8 hastat; /* Host Adapter Status (HASTAT) */ |
99 | u8 tarstat; /* Target Device Status (TARSTAT) */ | |
cb5b570c | 100 | u8 reserved[2]; |
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101 | u8 cdb[MAX_CDB + MAX_SENSE]; /* SCSI Command Descriptor Block */ |
102 | /* followed by the Auto Sense data */ | |
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103 | }; |
104 | ||
3a70c006 | 105 | #define AHA1542_REGION_SIZE 4 |
1da177e4 | 106 | #define AHA1542_MAILBOXES 8 |
1da177e4 | 107 | |
e51dacbf | 108 | #endif /* _AHA1542_H_ */ |