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1.1 root 1: /*
2: * SCSI general interface description
1.1.1.2 ! root 3: *
1.1 root 4: * Largely written by Julian Elischer ([email protected])
5: * for TRW Financial Systems.
6: *
7: * TRW Financial Systems, in accordance with their agreement with Carnegie
8: * Mellon University, makes this software available to CMU to distribute
9: * or use in any manner that they see fit as long as this message is kept with
10: * the software. For this reason TFS also grants any other persons or
11: * organisations permission to use or modify this software.
12: *
13: * TFS supplies this software to be publicly redistributed
14: * on the understanding that TFS is not responsible for the correct
15: * functioning of this software in any circumstances.
16: *
1.1.1.2 ! root 17: * scsi_all.h,v 1.2 1993/05/20 03:46:26 cgd Exp
1.1 root 18: */
19:
20: /*
21: * Ported to run under 386BSD by Julian Elischer ([email protected]) Sept 1992
22: */
23:
24: /*
25: * SCSI command format
26: */
27:
28:
29: struct scsi_generic
30: {
31: u_char opcode;
32: u_char bytes[11];
33: };
34:
35: struct scsi_test_unit_ready
36: {
37: u_char op_code;
38: u_char :5;
39: u_char lun:3;
40: u_char unused[3];
41: u_char link:1;
42: u_char flag:4;
43: u_char :3;
44: };
45:
46: struct scsi_send_diag
47: {
48: u_char op_code;
49: u_char uol:1;
50: u_char dol:1;
51: u_char selftest:1;
52: u_char :1;
53: u_char pf:1;
54: u_char lun:3;
55: u_char unused[1];
56: u_char paramlen[2];
57: u_char link:1;
58: u_char flag:4;
59: u_char :3;
60: };
61:
62: struct scsi_sense
63: {
64: u_char op_code;
65: u_char :5;
66: u_char lun:3;
67: u_char unused[2];
68: u_char length;
69: u_char link:1;
70: u_char flag:1;
71: u_char :6;
72: };
73:
74: struct scsi_inquiry
75: {
76: u_char op_code;
77: u_char :5;
78: u_char lun:3;
79: u_char unused[2];
80: u_char length;
81: u_char link:1;
82: u_char flag:1;
83: u_char :6;
84: };
85:
86: struct scsi_mode_sense
87: {
88: u_char op_code;
89: u_char :3;
90: u_char dbd:1;
91: u_char rsvd:1;
92: u_char lun:3;
93: u_char page_code:6;
94: u_char page_ctrl:2;
95: u_char unused;
96: u_char length;
97: u_char link:1;
98: u_char flag:1;
99: u_char :6;
100: };
101:
102: struct scsi_mode_sense_big
103: {
104: u_char op_code;
105: u_char :3;
106: u_char dbd:1;
107: u_char rsvd:1;
108: u_char lun:3;
109: u_char page_code:6;
110: u_char page_ctrl:2;
111: u_char unused[4];
112: u_char length[2];
113: u_char link:1;
114: u_char flag:1;
115: u_char :6;
116: };
117:
118: struct scsi_mode_select
119: {
120: u_char op_code;
121: u_char sp:1;
122: u_char :3;
123: u_char pf:1;
124: u_char lun:3;
125: u_char unused[2];
126: u_char length;
127: u_char link:1;
128: u_char flag:1;
129: u_char :6;
130: };
131:
132: struct scsi_mode_select_big
133: {
134: u_char op_code;
135: u_char sp:1;
136: u_char :3;
137: u_char pf:1;
138: u_char lun:3;
139: u_char unused[5];
140: u_char length[2];
141: u_char link:1;
142: u_char flag:1;
143: u_char :6;
144: };
145:
146: struct scsi_reserve
147: {
148: u_char op_code;
149: u_char :5;
150: u_char lun:3;
151: u_char unused[2];
152: u_char length;
153: u_char link:1;
154: u_char flag:1;
155: u_char :6;
156: };
157:
158: struct scsi_release
159: {
160: u_char op_code;
161: u_char :5;
162: u_char lun:3;
163: u_char unused[2];
164: u_char length;
165: u_char link:1;
166: u_char flag:1;
167: u_char :6;
168: };
169:
170: struct scsi_prevent
171: {
172: u_char op_code;
173: u_char :5;
174: u_char lun:3;
175: u_char unused[2];
176: u_char prevent:1;
177: u_char :7;
178: u_char link:1;
179: u_char flag:1;
180: u_char :6;
181: };
182: #define PR_PREVENT 1
183: #define PR_ALLOW 0
184:
185: /*
186: * Opcodes
187: */
188:
189: #define TEST_UNIT_READY 0x00
190: #define REQUEST_SENSE 0x03
191: #define INQUIRY 0x12
192: #define MODE_SELECT 0x15
193: #define MODE_SENSE 0x1a
194: #define START_STOP 0x1b
195: #define RESERVE 0x16
196: #define RELEASE 0x17
197: #define PREVENT_ALLOW 0x1e
198: #define POSITION_TO_ELEMENT 0x2b
199: #define MODE_SENSE_BIG 0x54
200: #define MODE_SELECT_BIG 0x55
201: #define MOVE_MEDIUM 0xa5
202: #define READ_ELEMENT_STATUS 0xb8
203:
204:
205: /*
206: * sense data format
207: */
208: #define T_DIRECT 0
209: #define T_SEQUENTIAL 1
210: #define T_PRINTER 2
211: #define T_PROCESSOR 3
212: #define T_WORM 4
213: #define T_READONLY 5
214: #define T_SCANNER 6
215: #define T_OPTICAL 7
216: #define T_NODEVICE 0x1F
217:
218: #define T_CHANGER 8
219: #define T_COMM 9
220:
221: #define T_REMOV 1
222: #define T_FIXED 0
223:
224: struct scsi_inquiry_data
225: {
226: u_char device_type:5;
227: u_char device_qualifier:3;
228: u_char dev_qual2:7;
229: u_char removable:1;
230: u_char ansii_version:3;
231: u_char :5;
232: u_char response_format;
233: u_char additional_length;
234: u_char unused[2];
235: u_char :3;
236: u_char can_link:1;
237: u_char can_sync:1;
238: u_char :3;
239: char vendor[8];
240: char product[16];
241: char revision[4];
242: u_char extra[8];
243: };
244:
245:
246: struct scsi_sense_data
247: {
248: u_char error_code:4;
249: u_char error_class:3;
250: u_char valid:1;
251: union
252: {
253: struct
254: {
255: u_char blockhi:5;
256: u_char vendor:3;
257: u_char blockmed;
258: u_char blocklow;
259: } unextended;
260: struct
261: {
262: u_char segment;
263: u_char sense_key:4;
264: u_char :1;
265: u_char ili:1;
266: u_char eom:1;
267: u_char filemark:1;
268: u_char info[4];
269: u_char extra_len;
270: /* allocate enough room to hold new stuff
271: u_char cmd_spec_info[4];
272: u_char add_sense_code;
273: u_char add_sense_code_qual;
274: u_char fru;
275: u_char sense_key_spec_1:7;
276: u_char sksv:1;
277: u_char sense_key_spec_2;
278: u_char sense_key_spec_3;
279: ( by increasing 16 to 26 below) */
280: u_char extra_bytes[26];
281: } extended;
282: }ext;
283: };
284: struct scsi_sense_data_new
285: {
286: u_char error_code:7;
287: u_char valid:1;
288: union
289: {
290: struct
291: {
292: u_char blockhi:5;
293: u_char vendor:3;
294: u_char blockmed;
295: u_char blocklow;
296: } unextended;
297: struct
298: {
299: u_char segment;
300: u_char sense_key:4;
301: u_char :1;
302: u_char ili:1;
303: u_char eom:1;
304: u_char filemark:1;
305: u_char info[4];
306: u_char extra_len;
307: u_char cmd_spec_info[4];
308: u_char add_sense_code;
309: u_char add_sense_code_qual;
310: u_char fru;
311: u_char sense_key_spec_1:7;
312: u_char sksv:1;
313: u_char sense_key_spec_2;
314: u_char sense_key_spec_3;
315: u_char extra_bytes[16];
316: } extended;
317: }ext;
318: };
319:
320: struct blk_desc
321: {
322: u_char density;
323: u_char nblocks[3];
324: u_char reserved;
325: u_char blklen[3];
326: };
327:
328: struct scsi_mode_header
329: {
330: u_char data_length; /* Sense data length */
331: u_char medium_type;
332: u_char dev_spec;
333: u_char blk_desc_len;
334: };
335:
336: struct scsi_mode_header_big
337: {
338: u_char data_length[2]; /* Sense data length */
339: u_char medium_type;
340: u_char dev_spec;
341: u_char unused[2];
342: u_char blk_desc_len[2];
343: };
344:
345:
346: /*
347: * Status Byte
348: */
349: #define SCSI_OK 0x00
350: #define SCSI_CHECK 0x02
351: #define SCSI_BUSY 0x08
352: #define SCSI_INTERM 0x10
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