1 /*- 2 * Copyright (c) 2003 Silicon Graphics International Corp. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions, and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * substantially similar to the "NO WARRANTY" disclaimer below 13 * ("Disclaimer") and any redistribution must be conditioned upon 14 * including a substantially similar Disclaimer requirement for further 15 * binary redistribution. 16 * 17 * NO WARRANTY 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGES. 29 * 30 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_ser_table.c#1 $ 31 * $FreeBSD$ 32 */ 33 34 /* 35 * CAM Target Layer command serialization table. 36 * 37 * Author: Kim Le 38 */ 39 40 /****************************************************************************/ 41 /* TABLE ctlSerTbl */ 42 /* */ 43 /* The matrix which drives the serialization algorithm. The major index */ 44 /* (the first) into this table is the command being checked and the minor */ 45 /* index is the command against which the first command is being checked. */ 46 /* i.e., the major index (row) command is ahead of the minor index command */ 47 /* (column) in the queue. This allows the code to optimize by capturing */ 48 /* the result of the first indexing operation into a pointer. */ 49 /* */ 50 /* Whenever a new value is added to the IDX_T type, this matrix must be */ 51 /* expanded by one row AND one column -- Because of this, some effort */ 52 /* should be made to re-use the indexes whenever possible. */ 53 /* */ 54 /****************************************************************************/ 55 56 #define sK CTL_SER_SKIP /* Skip */ 57 #define pS CTL_SER_PASS /* Pass */ 58 #define bK CTL_SER_BLOCK /* Blocked */ 59 #define bO CTL_SER_BLOCKOPT /* Optional block */ 60 #define xT CTL_SER_EXTENT /* Extent check */ 61 #define xO CTL_SER_EXTENTOPT /* Optional extent check */ 62 #define xS CTL_SER_EXTENTSEQ /* Sequential extent check */ 63 64 static ctl_serialize_action 65 ctl_serialize_table[CTL_SERIDX_COUNT][CTL_SERIDX_COUNT] = { 66 /**>IDX_ :: 2nd:TUR RD WRT UNM MDSN MDSL RQSN INQ RDCP RES LSNS FMT STR*/ 67 /*TUR */{ pS, pS, pS, pS, bK, bK, bK, pS, pS, bK, pS, bK, bK}, 68 /*READ */{ pS, xS, xT, bO, bK, bK, bK, pS, pS, bK, pS, bK, bK}, 69 /*WRITE */{ pS, xT, xT, bO, bK, bK, bK, pS, pS, bK, pS, bK, bK}, 70 /*UNMAP */{ pS, xO, xO, pS, bK, bK, bK, pS, pS, bK, pS, bK, bK}, 71 /*MD_SNS */{ bK, bK, bK, bK, pS, bK, bK, pS, pS, bK, pS, bK, bK}, 72 /*MD_SEL */{ bK, bK, bK, bK, bK, bK, bK, pS, pS, bK, pS, bK, bK}, 73 /*RQ_SNS */{ pS, pS, pS, pS, pS, pS, bK, pS, pS, bK, pS, bK, bK}, 74 /*INQ */{ pS, pS, pS, pS, pS, pS, bK, pS, pS, pS, pS, bK, bK}, 75 /*RD_CAP */{ pS, pS, pS, pS, pS, pS, bK, pS, pS, pS, pS, bK, pS}, 76 /*RES */{ bK, bK, bK, bK, bK, bK, bK, pS, bK, bK, bK, bK, bK}, 77 /*LOG_SNS */{ pS, pS, pS, pS, pS, bK, bK, pS, pS, bK, pS, bK, bK}, 78 /*FORMAT */{ pS, bK, bK, bK, bK, bK, pS, pS, bK, bK, bK, bK, bK}, 79 /*START */{ bK, bK, bK, bK, bK, bK, bK, pS, bK, bK, bK, bK, bK}, 80 }; 81 82