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1.1 root 1: /* mscp.h 81/10/26 1.1 */
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: typedef short quad[4]; /* a word-aligned quadword */
143:
144: /*
145: * An MSCP packet
146: */
147:
148: struct mscp {
149: struct mscp_header mscp_header;/* device specific header */
150: long mscp_cmdref; /* command reference number */
151: short mscp_unit; /* unit number */
152: short mscp_xxx1; /* unused */
153: u_char mscp_opcode; /* opcode */
154: u_char mscp_flags; /* end message flags */
155: short mscp_modifier; /* modifiers */
156: union {
157: struct {
158: long Mscp_bytecnt; /* byte count */
159: long Mscp_buffer; /* buffer descriptor */
160: long Mscp_xxx2[2]; /* unused */
161: long Mscp_lbn; /* logical block number */
162: long Mscp_xxx4; /* unused */
163: long *Mscp_dscptr; /* pointer to descriptor (software) */
164: long Mscp_sftwds[4]; /* software words, padding */
165: } mscp_generic;
166: struct {
167: short Mscp_version; /* MSCP version */
168: short Mscp_cntflgs; /* controller flags */
169: short Mscp_hsttmo; /* host timeout */
170: short Mscp_usefrac; /* use fraction */
171: long Mscp_time; /* time and date */
172: } mscp_setcntchar;
173: struct {
174: short Mscp_multunt; /* multi-unit code */
175: short Mscp_unitflgs; /* unit flags */
176: long Mscp_hostid; /* host identifier */
177: quad Mscp_unitid; /* unit identifier */
178: long Mscp_mediaid; /* media type identifier */
179: short Mscp_shdwunt; /* shadow unit */
180: short Mscp_shdwsts; /* shadow status */
181: short Mscp_track; /* track size */
182: short Mscp_group; /* group size */
183: short Mscp_cylinder; /* cylinder size */
184: short Mscp_xxx3; /* reserved */
185: short Mscp_rctsize; /* RCT table size */
186: char Mscp_rbns; /* RBNs / track */
187: char Mscp_rctcpys; /* RCT copies */
188: } mscp_getunitsts;
189: } mscp_un;
190: };
191:
192: /*
193: * generic packet
194: */
195:
196: #define mscp_bytecnt mscp_un.mscp_generic.Mscp_bytecnt
197: #define mscp_buffer mscp_un.mscp_generic.Mscp_buffer
198: #define mscp_lbn mscp_un.mscp_generic.Mscp_lbn
199: #define mscp_dscptr mscp_un.mscp_generic.Mscp_dscptr
200: #define mscp_sftwds mscp_un.mscp_generic.Mscp_sftwds
201: #define mscp_status mscp_modifier
202:
203: /*
204: * Abort / Get Command Status packet
205: */
206:
207: #define mscp_outref mscp_bytecnt
208:
209: /*
210: * Online / Set Unit Characteristics packet
211: */
212:
213: #define mscp_errlgfl mscp_lbn
214: #define mscp_copyspd mscp_shdwsts
215:
216: /*
217: * Replace packet
218: */
219:
220: #define mscp_rbn mscp_bytecnt
221:
222: /*
223: * Set Controller Characteristics packet
224: */
225:
226: #define mscp_version mscp_un.mscp_setcntchar.Mscp_version
227: #define mscp_cntflgs mscp_un.mscp_setcntchar.Mscp_cntflgs
228: #define mscp_hsttmo mscp_un.mscp_setcntchar.Mscp_hsttmo
229: #define mscp_usefrac mscp_un.mscp_setcntchar.Mscp_usefrac
230: #define mscp_time mscp_un.mscp_setcntchar.Mscp_time
231:
232: /*
233: * Get Unit Status end packet
234: */
235:
236: #define mscp_multunt mscp_un.mscp_getunitsts.Mscp_multunt
237: #define mscp_unitflgs mscp_un.mscp_getunitsts.Mscp_unitflgs
238: #define mscp_hostid mscp_un.mscp_getunitsts.Mscp_hostid
239: #define mscp_unitid mscp_un.mscp_getunitsts.Mscp_unitid
240: #define mscp_mediaid mscp_un.mscp_getunitsts.Mscp_mediaid
241: #define mscp_shdwunt mscp_un.mscp_getunitsts.Mscp_shdwunt
242: #define mscp_shdwsts mscp_un.mscp_getunitsts.Mscp_shdwsts
243: #define mscp_track mscp_un.mscp_getunitsts.Mscp_track
244: #define mscp_group mscp_un.mscp_getunitsts.Mscp_group
245: #define mscp_cylinder mscp_un.mscp_getunitsts.Mscp_cylinder
246: #define mscp_rctsize mscp_un.mscp_getunitsts.Mscp_rctsize
247: #define mscp_rbns mscp_un.mscp_getunitsts.Mscp_rbns
248: #define mscp_rctcpys mscp_un.mscp_getunitsts.Mscp_rctcpys
249:
250: /*
251: * Online / Set Unit Characteristics end packet
252: */
253:
254: #define mscp_untsize mscp_dscptr
255: #define mscp_volser mscp_sftwds[0]
256:
257: /*
258: * Set Controller Characteristics end packet
259: */
260:
261: #define mscp_cnttmo mscp_hsttmo
262: #define mscp_cntcmdl mscp_usefrac
263: #define mscp_cntid mscp_unitid
264:
265:
266: /*
267: * Error Log message format codes
268: */
269: #define M_FM_CNTERR 0 /* Controller error */
270: #define M_FM_BUSADDR 1 /* Host memory access error */
271: #define M_FM_DISKTRN 2 /* Disk transfer error */
272: #define M_FM_SDI 3 /* SDI error */
273: #define M_FM_SMLDSK 4 /* Small disk error */
274:
275: /*
276: * Error Log message flags
277: */
278: #define M_LF_SUCC 0200 /* Operation successful */
279: #define M_LF_CONT 0100 /* Operation continuing */
280: #define M_LF_SQNRS 0001 /* Sequence number reset */
281:
282: /*
283: * MSCP Error Log packet
284: *
285: * NOTE: MSCP packet must be padded to this size.
286: */
287:
288: struct mslg {
289: struct mscp_header mslg_header;/* device specific header */
290: long mslg_cmdref; /* command reference number */
291: short mslg_unit; /* unit number */
292: short mslg_seqnum; /* sequence number */
293: u_char mslg_format; /* format */
294: u_char mslg_flags; /* error log message flags */
295: short mslg_event; /* event code */
296: quad mslg_cntid; /* controller id */
297: u_char mslg_cntsvr; /* controller software version */
298: u_char mslg_cnthvr; /* controller hardware version */
299: short mslg_multunt; /* multi-unit code */
300: quad mslg_unitid; /* unit id */
301: u_char mslg_unitsvr; /* unit software version */
302: u_char mslg_unithvr; /* unit hardware version */
303: short mslg_group; /* group */
304: long mslg_volser; /* volume serial number */
305: long mslg_cylinder; /* cylinder */
306: short mslg_track; /* track */
307: short mslg_sector; /* sector */
308: long mslg_lbn; /* logical block number */
309: u_char mslg_level; /* level */
310: u_char mslg_retry; /* retry */
311: };
312:
313: #define mslg_busaddr mslg_unitid
314: #define mslg_sdecyl mslg_group
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