xref: /freebsd/sys/cam/ctl/ctl_ser_table.c (revision ec0ea6efa1ad229d75c394c1a9b9cac33af2b1d3)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2003 Silicon Graphics International Corp.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions, and the following disclaimer,
12  *    without modification.
13  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14  *    substantially similar to the "NO WARRANTY" disclaimer below
15  *    ("Disclaimer") and any redistribution must be conditioned upon
16  *    including a substantially similar Disclaimer requirement for further
17  *    binary redistribution.
18  *
19  * NO WARRANTY
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
28  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
29  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30  * POSSIBILITY OF SUCH DAMAGES.
31  *
32  * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_ser_table.c#1 $
33  * $FreeBSD$
34  */
35 
36 /*
37  * CAM Target Layer command serialization table.
38  *
39  * Author: Kim Le
40  */
41 
42 /****************************************************************************/
43 /* TABLE       ctlSerTbl                                                    */
44 /*                                                                          */
45 /*  The matrix which drives the serialization algorithm. The major index    */
46 /*  (the first, row) into this table is the new command.  The minor index   */
47 /*  (column) is the older, possibly already running, command.               */
48 /*                                                                          */
49 /*  Whenever a new value is added to the IDX_T type, this matrix must be    */
50 /*  expanded by one row AND one column -- Because of this, some effort      */
51 /*  should be made to re-use the indexes whenever possible.                 */
52 /*                                                                          */
53 /****************************************************************************/
54 
55 #define	pS	CTL_SER_PASS		/* Pass */
56 #define	bK	CTL_SER_BLOCK		/* Blocked */
57 #define	bO	CTL_SER_BLOCKOPT	/* Optional block */
58 #define	xT	CTL_SER_EXTENT		/* Extent check */
59 #define	xO	CTL_SER_EXTENTOPT	/* Optional extent check */
60 #define	xS	CTL_SER_SEQ		/* Sequential check */
61 
62 const static uint8_t
63 ctl_serialize_table[CTL_SERIDX_COUNT][CTL_SERIDX_COUNT] = {
64 /**>IDX_ :: 2nd:TUR RD  WRT UNM SYN MDSN MDSL RQSN INQ RDCP RES LSNS FMT STR*/
65 /*TUR     */{   pS, pS, pS, pS, pS, bK,  bK,  pS,  pS, pS,  bK, pS,  pS, bK},
66 /*READ    */{   pS, xS, xT, xO, pS, bK,  bK,  pS,  pS, pS,  bK, pS,  bK, bK},
67 /*WRITE   */{   pS, xT, xT, xO, pS, bK,  bK,  pS,  pS, pS,  bK, pS,  bK, bK},
68 /*UNMAP   */{   pS, bO, bO, pS, pS, bK,  bK,  pS,  pS, pS,  bK, pS,  bK, bK},
69 /*SYNC    */{   pS, pS, bO, pS, pS, bK,  bK,  pS,  pS, pS,  bK, pS,  bK, bK},
70 /*MD_SNS  */{   bK, bK, bK, bK, bK, pS,  bK,  pS,  pS, pS,  bK, pS,  bK, bK},
71 /*MD_SEL  */{   bK, bK, bK, bK, bK, bK,  bK,  pS,  pS, pS,  bK, bK,  bK, bK},
72 /*RQ_SNS  */{   bK, bK, bK, bK, bK, bK,  bK,  bK,  bK, bK,  bK, bK,  pS, bK},
73 /*INQ     */{   pS, pS, pS, pS, pS, pS,  pS,  pS,  pS, pS,  pS, pS,  pS, pS},
74 /*RD_CAP  */{   pS, pS, pS, pS, pS, pS,  pS,  pS,  pS, pS,  bK, pS,  bK, bK},
75 /*RES     */{   bK, bK, bK, bK, bK, bK,  bK,  bK,  pS, pS,  bK, bK,  bK, bK},
76 /*LOG_SNS */{   pS, pS, pS, pS, pS, pS,  pS,  pS,  pS, pS,  bK, pS,  bK, bK},
77 /*FORMAT  */{   bK, bK, bK, bK, bK, bK,  bK,  bK,  bK, bK,  bK, bK,  bK, bK},
78 /*START   */{   bK, bK, bK, bK, bK, bK,  bK,  bK,  bK, pS,  bK, bK,  bK, bK},
79 };
80 
81