projects / unix-history / blame
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| d4284689 RG |
1 | #ifndef _SCSI_GENERIC_H_ |
| 2 | #define _SCSI_GENERIC_H_ | |
| 3 | ||
| 4 | /* | |
| 5 | * Contributed by HD Associates (hd@world.std.com). | |
| 6 | * Copyright (c) 1992, 1993 HD Associates | |
| 7 | * | |
| 8 | * Berkeley style copyright. I've just snarfed it out of stdio.h: | |
| 9 | * | |
| 10 | * Redistribution and use in source and binary forms, with or without | |
| 11 | * modification, are permitted provided that the following conditions | |
| 12 | * are met: | |
| 13 | * 1. Redistributions of source code must retain the above copyright | |
| 14 | * notice, this list of conditions and the following disclaimer. | |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 16 | * notice, this list of conditions and the following disclaimer in the | |
| 17 | * documentation and/or other materials provided with the distribution. | |
| 18 | * 3. All advertising materials mentioning features or use of this software | |
| 19 | * must display the following acknowledgement: | |
| 20 | * This product includes software developed by the University of | |
| 21 | * California, Berkeley and its contributors. | |
| 22 | * 4. Neither the name of the University nor the names of its contributors | |
| 23 | * may be used to endorse or promote products derived from this software | |
| 24 | * without specific prior written permission. | |
| 25 | * | |
| 26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 36 | * SUCH DAMAGE. | |
| 37 | * | |
| 38 | */ | |
| 39 | ||
| 40 | /* generic SCSI header file. We use the same minor number format | |
| 41 | * as on SGI except that the flag bits aren't available because they | |
| 42 | * are used as the board index. | |
| 43 | * | |
| 44 | * The minor number format is: | |
| 45 | * FF UUU III (FFUU UIII) | |
| 46 | * | |
| 47 | * Where: | |
| 48 | * FF is the board index | |
| 49 | * UUU are the LUN | |
| 50 | * III is the SCSI ID (controller) | |
| 51 | */ | |
| 52 | ||
| 53 | #define G_SCSI_FLAG(DEV) (((DEV) & 0xC0) >> 6) | |
| 54 | #define G_SCSI_UNIT(DEV) G_SCSI_FLAG(DEV) | |
| 55 | #define G_SCSI_LUN(DEV) (((DEV) & 0x38) >> 3) | |
| 56 | #define G_SCSI_ID(DEV) ((DEV) & 0x7) | |
| 57 | ||
| 58 | #define G_SCSI_MINOR(FLAG, LUN, ID) \ | |
| 59 | (((FLAG) << 6) | ((LUN) << 3) | (ID)) | |
| 60 | ||
| 61 | #endif /* _SCSI_GENERIC_H_ */ |