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1.1 root 1: /* mscp.h 6.1 83/07/29 */
2: /*
3: * Definitions for the Mass Storage Control Protocol
4: */
5:
6:
7: /*
8: * Control message opcodes
9: */
10: #define M_OP_ABORT 0001 /* Abort command */
11: #define M_OP_GTCMD 0002 /* Get command status command */
12: #define M_OP_GTUNT 0003 /* Get unit status command */
13: #define M_OP_STCON 0004 /* Set controller characteristics command */
14: #define M_OP_SEREX 0007 /* Serious exception end message */
15: #define M_OP_AVAIL 0010 /* Available command */
16: #define M_OP_ONLIN 0011 /* Online command */
17: #define M_OP_STUNT 0012 /* Set unit characteristics command */
18: #define M_OP_DTACP 0013 /* Determine access paths command */
19: #define M_OP_ACCES 0020 /* Access command */
20: #define M_OP_CMPCD 0021 /* Compare controller data command */
21: #define M_OP_ERASE 0022 /* Erase command */
22: #define M_OP_FLUSH 0023 /* Flush command */
23: #define M_OP_REPLC 0024 /* Replace command */
24: #define M_OP_COMP 0040 /* Compare host data command */
25: #define M_OP_READ 0041 /* Read command */
26: #define M_OP_WRITE 0042 /* Write command */
27: #define M_OP_AVATN 0100 /* Available attention message */
28: #define M_OP_DUPUN 0101 /* Duplicate unit number attention message */
29: #define M_OP_ACPTH 0102 /* Access path attention message */
30: #define M_OP_END 0200 /* End message flag */
31:
32:
33: /*
34: * Generic command modifiers
35: */
36: #define M_MD_EXPRS 0100000 /* Express request */
37: #define M_MD_COMP 0040000 /* Compare */
38: #define M_MD_CLSEX 0020000 /* Clear serious exception */
39: #define M_MD_ERROR 0010000 /* Force error */
40: #define M_MD_SCCHH 0004000 /* Suppress caching (high speed) */
41: #define M_MD_SCCHL 0002000 /* Suppress caching (low speed) */
42: #define M_MD_SECOR 0001000 /* Suppress error correction */
43: #define M_MD_SEREC 0000400 /* Suppress error recovery */
44: #define M_MD_SSHDW 0000200 /* Suppress shadowing */
45: #define M_MD_WBKNV 0000100 /* Write back (non-volatile) */
46: #define M_MD_WBKVL 0000040 /* Write back (volatile) */
47: #define M_MD_WRSEQ 0000020 /* Write shadow set one unit at a time */
48:
49: /*
50: * AVAILABLE command modifiers
51: */
52: #define M_MD_ALLCD 0000002 /* All class drivers */
53: #define M_MD_SPNDW 0000001 /* Spin down */
54:
55: /*
56: * FLUSH command modifiers
57: */
58: #define M_MD_FLENU 0000001 /* Flush entire unit */
59: #define M_MD_VOLTL 0000002 /* Volatile only */
60:
61: /*
62: * GET UNIT STATUS command modifiers
63: */
64: #define M_MD_NXUNT 0000001 /* Next unit */
65:
66: /*
67: * ONLINE command modifiers
68: */
69: #define M_MD_RIP 0000001 /* Allow self destruction */
70: #define M_MD_IGNMF 0000002 /* Ignore media format error */
71:
72: /*
73: * ONLINE and SET UNIT CHARACTERISTICS command modifiers
74: */
75: #define M_MD_ALTHI 0000040 /* Alter host identifier */
76: #define M_MD_SHDSP 0000020 /* Shadow unit specified */
77: #define M_MD_CLWBL 0000010 /* Clear write-back data lost */
78: #define M_MD_STWRP 0000004 /* Set write protect */
79:
80: /*
81: * REPLACE command modifiers
82: */
83: #define M_MD_PRIMR 0000001 /* Primary replacement block */
84:
85:
86: /*
87: * End message flags
88: */
89: #define M_EF_BBLKR 0200 /* Bad block reported */
90: #define M_EF_BBLKU 0100 /* Bad block unreported */
91: #define M_EF_ERLOG 0040 /* Error log generated */
92: #define M_EF_SEREX 0020 /* Serious exception */
93:
94:
95: /*
96: * Controller flags
97: */
98: #define M_CF_ATTN 0200 /* Enable attention messages */
99: #define M_CF_MISC 0100 /* Enable miscellaneous error log messages */
100: #define M_CF_OTHER 0040 /* Enable other host's error log messages */
101: #define M_CF_THIS 0020 /* Enable this host's error log messages */
102: #define M_CF_MLTHS 0004 /* Multi-host */
103: #define M_CF_SHADW 0002 /* Shadowing */
104: #define M_CF_576 0001 /* 576 byte sectors */
105:
106:
107: /*
108: * Unit flags
109: */
110: #define M_UF_REPLC 0100000 /* Controller initiated bad block replacement */
111: #define M_UF_INACT 0040000 /* Inactive shadow set unit */
112: #define M_UF_WRTPH 0020000 /* Write protect (hardware) */
113: #define M_UF_WRTPS 0010000 /* Write protect (software or volume) */
114: #define M_UF_SCCHH 0004000 /* Suppress caching (high speed) */
115: #define M_UF_SCCHL 0002000 /* Suppress caching (low speed) */
116: #define M_UF_RMVBL 0000200 /* Removable media */
117: #define M_UF_WBKNV 0000100 /* Write back (non-volatile) */
118: #define M_UF_576 0000004 /* 576 byte sectors */
119: #define M_UF_CMPWR 0000002 /* Compare writes */
120: #define M_UF_CMPRD 0000001 /* Compare reads */
121:
122:
123: /*
124: * Status codes
125: */
126: #define M_ST_MASK 037 /* Status code mask */
127: #define M_ST_SUCC 000 /* Success */
128: #define M_ST_ICMD 001 /* Invalid command */
129: #define M_ST_ABRTD 002 /* Command aborted */
130: #define M_ST_OFFLN 003 /* Unit offline */
131: #define M_ST_AVLBL 004 /* Unit available */
132: #define M_ST_MFMTE 005 /* Media format error */
133: #define M_ST_WRTPR 006 /* Write protected */
134: #define M_ST_COMP 007 /* Compare error */
135: #define M_ST_DATA 010 /* Data error */
136: #define M_ST_HSTBF 011 /* Host buffer access error */
137: #define M_ST_CNTLR 012 /* Controller error */
138: #define M_ST_DRIVE 013 /* Drive error */
139: #define M_ST_DIAG 037 /* Message from an internal diagnostic */
140:
141: /*
142: * An MSCP packet
143: */
144:
145: struct mscp {
146: struct mscp_header mscp_header;/* device specific header */
147: long mscp_cmdref; /* command reference number */
148: short mscp_unit; /* unit number */
149: short mscp_xxx1; /* unused */
150: u_char mscp_opcode; /* opcode */
151: u_char mscp_flags; /* end message flags */
152: short mscp_modifier; /* modifiers */
153: union {
154: struct {
155: long Mscp_bytecnt; /* byte count */
156: long Mscp_buffer; /* buffer descriptor */
157: long Mscp_xxx2[2]; /* unused */
158: long Mscp_lbn; /* logical block number */
159: long Mscp_xxx4; /* unused */
160: long *Mscp_dscptr; /* pointer to descriptor (software) */
161: long Mscp_sftwds[4]; /* software words, padding */
162: } mscp_generic;
163: struct {
164: short Mscp_version; /* MSCP version */
165: short Mscp_cntflgs; /* controller flags */
166: short Mscp_hsttmo; /* host timeout */
167: short Mscp_usefrac; /* use fraction */
168: long Mscp_time; /* time and date */
169: } mscp_setcntchar;
170: struct {
171: short Mscp_multunt; /* multi-unit code */
172: short Mscp_unitflgs; /* unit flags */
173: long Mscp_hostid; /* host identifier */
174: quad Mscp_unitid; /* unit identifier */
175: long Mscp_mediaid; /* media type identifier */
176: short Mscp_shdwunt; /* shadow unit */
177: short Mscp_shdwsts; /* shadow status */
178: short Mscp_track; /* track size */
179: short Mscp_group; /* group size */
180: short Mscp_cylinder; /* cylinder size */
181: short Mscp_xxx3; /* reserved */
182: short Mscp_rctsize; /* RCT table size */
183: char Mscp_rbns; /* RBNs / track */
184: char Mscp_rctcpys; /* RCT copies */
185: } mscp_getunitsts;
186: } mscp_un;
187: };
188:
189: /*
190: * generic packet
191: */
192:
193: #define mscp_bytecnt mscp_un.mscp_generic.Mscp_bytecnt
194: #define mscp_buffer mscp_un.mscp_generic.Mscp_buffer
195: #define mscp_lbn mscp_un.mscp_generic.Mscp_lbn
196: #define mscp_dscptr mscp_un.mscp_generic.Mscp_dscptr
197: #define mscp_sftwds mscp_un.mscp_generic.Mscp_sftwds
198: #define mscp_status mscp_modifier
199:
200: /*
201: * Abort / Get Command Status packet
202: */
203:
204: #define mscp_outref mscp_bytecnt
205:
206: /*
207: * Online / Set Unit Characteristics packet
208: */
209:
210: #define mscp_errlgfl mscp_lbn
211: #define mscp_copyspd mscp_shdwsts
212:
213: /*
214: * Replace packet
215: */
216:
217: #define mscp_rbn mscp_bytecnt
218:
219: /*
220: * Set Controller Characteristics packet
221: */
222:
223: #define mscp_version mscp_un.mscp_setcntchar.Mscp_version
224: #define mscp_cntflgs mscp_un.mscp_setcntchar.Mscp_cntflgs
225: #define mscp_hsttmo mscp_un.mscp_setcntchar.Mscp_hsttmo
226: #define mscp_usefrac mscp_un.mscp_setcntchar.Mscp_usefrac
227: #define mscp_time mscp_un.mscp_setcntchar.Mscp_time
228:
229: /*
230: * Get Unit Status end packet
231: */
232:
233: #define mscp_multunt mscp_un.mscp_getunitsts.Mscp_multunt
234: #define mscp_unitflgs mscp_un.mscp_getunitsts.Mscp_unitflgs
235: #define mscp_hostid mscp_un.mscp_getunitsts.Mscp_hostid
236: #define mscp_unitid mscp_un.mscp_getunitsts.Mscp_unitid
237: #define mscp_mediaid mscp_un.mscp_getunitsts.Mscp_mediaid
238: #define mscp_shdwunt mscp_un.mscp_getunitsts.Mscp_shdwunt
239: #define mscp_shdwsts mscp_un.mscp_getunitsts.Mscp_shdwsts
240: #define mscp_track mscp_un.mscp_getunitsts.Mscp_track
241: #define mscp_group mscp_un.mscp_getunitsts.Mscp_group
242: #define mscp_cylinder mscp_un.mscp_getunitsts.Mscp_cylinder
243: #define mscp_rctsize mscp_un.mscp_getunitsts.Mscp_rctsize
244: #define mscp_rbns mscp_un.mscp_getunitsts.Mscp_rbns
245: #define mscp_rctcpys mscp_un.mscp_getunitsts.Mscp_rctcpys
246:
247: /*
248: * Online / Set Unit Characteristics end packet
249: */
250:
251: #define mscp_untsize mscp_dscptr
252: #define mscp_volser mscp_sftwds[0]
253:
254: /*
255: * Set Controller Characteristics end packet
256: */
257:
258: #define mscp_cnttmo mscp_hsttmo
259: #define mscp_cntcmdl mscp_usefrac
260: #define mscp_cntid mscp_unitid
261:
262:
263: /*
264: * Error Log message format codes
265: */
266: #define M_FM_CNTERR 0 /* Controller error */
267: #define M_FM_BUSADDR 1 /* Host memory access error */
268: #define M_FM_DISKTRN 2 /* Disk transfer error */
269: #define M_FM_SDI 3 /* SDI error */
270: #define M_FM_SMLDSK 4 /* Small disk error */
271:
272: /*
273: * Error Log message flags
274: */
275: #define M_LF_SUCC 0200 /* Operation successful */
276: #define M_LF_CONT 0100 /* Operation continuing */
277: #define M_LF_SQNRS 0001 /* Sequence number reset */
278:
279: /*
280: * MSCP Error Log packet
281: *
282: * NOTE: MSCP packet must be padded to this size.
283: */
284:
285: struct mslg {
286: struct mscp_header mslg_header;/* device specific header */
287: long mslg_cmdref; /* command reference number */
288: short mslg_unit; /* unit number */
289: short mslg_seqnum; /* sequence number */
290: u_char mslg_format; /* format */
291: u_char mslg_flags; /* error log message flags */
292: short mslg_event; /* event code */
293: quad mslg_cntid; /* controller id */
294: u_char mslg_cntsvr; /* controller software version */
295: u_char mslg_cnthvr; /* controller hardware version */
296: short mslg_multunt; /* multi-unit code */
297: quad mslg_unitid; /* unit id */
298: u_char mslg_unitsvr; /* unit software version */
299: u_char mslg_unithvr; /* unit hardware version */
300: short mslg_group; /* group; retry + level */
301: long mslg_volser; /* volume serial number */
302: long mslg_hdr; /* header */
303: char mslg_sdistat[12]; /* SDI status information */
304: };
305:
306: #define mslg_busaddr mslg_unitid.val[0]
307: #define mslg_sdecyl mslg_group
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