projects / unix-history / blame
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| 430f81c3 | 1 | /* |
| d2e049c0 KB |
2 | * Copyright (c) 1986 The Regents of the University of California. |
| 3 | * All rights reserved. | |
| 4 | * | |
| ad787160 C |
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 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| d2e049c0 | 20 | * |
| ad787160 C |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| d2e049c0 | 32 | * |
| 1c15e888 | 33 | * @(#)psproto.h 7.3 (Berkeley) 6/28/90 |
| 430f81c3 | 34 | */ |
| a994cc4f SL |
35 | |
| 36 | /* | |
| 37 | * PS300-Host Handshake Protocol Definitions. | |
| 38 | */ | |
| 39 | ||
| 40 | /* | |
| 41 | * Commands sent from host->PS300. | |
| 42 | * | |
| 43 | * In the initial handshake carried out when requesting | |
| 44 | * one of these commands be performed, the PS300 always | |
| 45 | * returns the identical code to indicate success. | |
| 46 | */ | |
| 47 | #define PS_ABORT 0x1000 /* abort current command */ | |
| 48 | #define PS_RESET 0x3000 /* reset device */ | |
| 49 | #define PS_RDNET 0x5000 /* logical read */ | |
| 50 | #define PS_LOOKUP 0x8000 /* name lookup */ | |
| 51 | #define PS_RDPHY 0x9000 /* physical read */ | |
| 52 | #define PS_WRPHY_SYNC 0xa000 /* physical write w/ sync */ | |
| 53 | #define PS_WRPHY 0xb000 /* physical write */ | |
| 54 | #define PS_WRNET 0xc000 /* logical write */ | |
| 55 | #define PS_DETACH 0xd000 /* normal/diagnostic detach */ | |
| 56 | #define PS_ATTACH 0xe000 /* normal attach */ | |
| 57 | #define PS_DATTACH 0xf000 /* diagnostic attach */ | |
| 58 | ||
| 59 | #define PS_DIOREAD 0x4000 /* internal, wait for dioread attention */ | |
| 60 | ||
| 61 | /* | |
| 62 | * Command responses from PS300->host. | |
| 63 | */ | |
| 64 | #define PS_DMAOK(code) ((code)|0x0a00) /* successful dma transfer */ | |
| 65 | #define PS_ADROK(code) ((code)|0x0100) /* successful address tranfer */ | |
| 66 | ||
| 67 | #define PS_CODE(v) ((v)&0xf000) /* extract code from PS300 msg */ | |
| 68 | #define PS_LUNIT(v) ((v)&0x000f) /* extract PS300 unit from msg */ | |
| 69 | ||
| 70 | /* | |
| 71 | * Single unit PS300 address list. | |
| 72 | */ | |
| 73 | struct psalist { | |
| 74 | u_short nblocks; /* # of i/o vectors (we always use 1) */ | |
| 75 | u_short addr[2]; /* PS300 address */ | |
| 76 | u_short wc; /* transfer size */ | |
| 77 | }; | |
| 78 | ||
| 79 | /* | |
| 80 | * The max dma size is actually 64KB, but | |
| 81 | * we limit it to be just large enough for | |
| 82 | * the maximum vector list as this is sufficient | |
| 83 | * for our needs and we must allocate real | |
| 84 | * memory to the intermediate buffer. | |
| 85 | */ | |
| 86 | #define PS_MAXDMA (1024+2048*12) | |
| 87 | ||
| 88 | /* | |
| 89 | * Pseudo commands used internally by the driver. | |
| 90 | */ | |
| 91 | #define PS_DMAOUT 0x0100 /* dma buffer host->PS300 */ | |
| 92 | #define PS_DMAIN 0x0200 /* dma buffer PS300->host */ | |
| 93 | ||
| 94 | /* | |
| 95 | * Default timeouts. | |
| 96 | */ | |
| 97 | #define PS_TIMEOUT 30 /* dma/attention timeout (in hz) */ | |
| 98 | #define PS_DIOTIMO 1000 /* dio polling timeout */ |