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1.1 root 1: /*
2: * Common SCSI portions of Adaptec AHA154x driver
3: *
4: * $Log: scsiwork.h,v $
5: * Revision 1.2 92/09/29 09:27:16 bin
6: * updated with kernel 63 src
7: *
8: * Revision 1.9 91/05/29 11:47:29 hal
9: * Add MSG_NOP.
10: *
11: * Revision 1.8 91/05/15 14:52:23 root
12: * Add READCAPLEN.
13: *
14: * Revision 1.7 91/04/20 01:36:46 root
15: * Add ScmdREZERO
16: *
17: * Revision 1.6 91/04/19 10:04:15 root
18: * Add MSG_IDENTIFY.
19: *
20: * Revision 1.5 91/04/17 02:21:18 root
21: * Add mode sense constants.
22: *
23: * Revision 1.4 91/04/10 14:11:41 root
24: * Add Information Transfer Phase masks.
25: *
26: * Revision 1.3 91/04/10 13:57:38 root
27: * Add constants such as message types - needed by ss.c
28: *
29: * Revision 1.2 91/03/14 16:51:29 root
30: * add Test Ready and Request Sense commands
31: *
32: * Revision 1.1 91/03/05 13:02:21 root
33: * As used to build initial aha154x driver
34: *
35: */
36: #define MAX_SCSI_ID 8
37: #define MAX_LUN 4 /* limited by minor device number */
38:
39: /*
40: * drive_info contains the "per drive" flags
41: */
42: extern char drive_info[MAX_SCSI_ID * MAX_LUN];
43: #define D_DISK 0x01 /* disk-type device (random) */
44: #define D_TAPE 0x02 /* tape-type device (sequential) */
45: #define D_PRINTER 0x04 /* printer-type device */
46: #define D_PROCESSOR 0x08 /* processor-type device */
47: #define D_REMOVEABLE 0x10 /* media can be changed */
48: #define D_WORM 0x20 /* WORM-type characteristics */
49:
50: /*
51: * Per disk controller data.
52: * Only one host adapter; no more, no less.
53: */
54:
55: struct scsi_work {
56: struct scsi_work *sw_actf; /* Link to first */
57: struct scsi_work *sw_actl; /* Link to last */
58: BUF *sw_bp; /* block request */
59: long sw_bno;
60: char sw_drv; /* 000sssll s=SCSI_ID l=LUN */
61: char sw_type;
62: char sw_retry;
63: };
64:
65: typedef struct scsi_work scsi_work_t;
66:
67: #define ScmdTESTREADY 0x00
68: #define ScmdREZERO 0x01
69: #define ScmdREQUESTSENSE 0x03
70: #define ScmdINQUIRY 0x12
71: #define ScmdMODESENSE 0x1A
72: #define ScmdREADCAPACITY 0x25
73: #define ScmdREADEXTENDED 0x28
74: #define ScmdWRITEXTENDED 0x2A
75:
76: struct scsi_cmd {
77: long block, buffer;
78: short blklen, buflen;
79: char unit; /* 000sssll s=SCSI_ID l=LUN */
80: char cmd;
81: };
82:
83: typedef struct scsi_cmd scsi_cmd_t;
84:
85: #define G0CMDLEN 6 /* Group 0 commands are 6 bytes long */
86: #define G1CMDLEN 10 /* Group 1 commands are 10 bytes long */
87: #define SENSELEN 22 /* number of bytes returned w/ req sense */
88: #define INQUIRYLEN 54 /* number of bytes returned w/ inquiry */
89: #define MODESENSELEN 92 /* number of bytes returned w/ mode sense */
90: #define READCAPLEN 8 /* number of bytes returned w/read capacity */
91:
92: /* Message types */
93: #define MSG_CMD_CMPLT 0x00 /* Command Complete */
94: #define MSG_SAVE_DPTR 0x02 /* Save SCSI data pointer */
95: #define MSG_RSTOR_DPTR 0x03 /* Restore SCSI pointers */
96: #define MSG_DISCONNECT 0x04 /* Target is about to disconnect */
97: #define MSG_ABORT 0x06 /* End the current SCSI bus cycle */
98: #define MSG_NOP 0x08 /* no-op */
99: #define MSG_DEV_RESET 0x0C /* Bus Device Reset */
100: #define MSG_IDENTIFY 0x80 /* Identify, with no Disconnect */
101: #define MSG_IDENT_DC 0xC0 /* Identify, with Disconnect allowed */
102:
103: #define CS_GOOD 0x00 /* Command Status from the drive */
104: #define CS_CHECK 0x02
105: #define CS_BUSY 0x08
106: #define CS_RESERVED 0x18
107:
108: /*
109: * Information Transfer Phase masks -
110: * setting of RS_MESSAGE, RS_I_O, and RS_CTRL_DATA determines which of six
111: * possible info transfer phases is occurring.
112: */
113: #define XP_MSG_IN (RS_MESSAGE | RS_I_O | RS_CTRL_DATA)
114: #define XP_MSG_OUT (RS_MESSAGE | RS_CTRL_DATA)
115: #define XP_STAT_IN ( RS_I_O | RS_CTRL_DATA)
116: #define XP_CMD_OUT ( RS_CTRL_DATA)
117: #define XP_DATA_IN ( RS_I_O )
118: #define XP_DATA_OUT ( 0)
119:
120: #define VTOP2(a1, a2) vtop(a1,a2)
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