1 /* 2 * Copyright (c) 1986 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)psproto.h 7.3 (Berkeley) 06/28/90 8 */ 9 10 /* 11 * PS300-Host Handshake Protocol Definitions. 12 */ 13 14 /* 15 * Commands sent from host->PS300. 16 * 17 * In the initial handshake carried out when requesting 18 * one of these commands be performed, the PS300 always 19 * returns the identical code to indicate success. 20 */ 21 #define PS_ABORT 0x1000 /* abort current command */ 22 #define PS_RESET 0x3000 /* reset device */ 23 #define PS_RDNET 0x5000 /* logical read */ 24 #define PS_LOOKUP 0x8000 /* name lookup */ 25 #define PS_RDPHY 0x9000 /* physical read */ 26 #define PS_WRPHY_SYNC 0xa000 /* physical write w/ sync */ 27 #define PS_WRPHY 0xb000 /* physical write */ 28 #define PS_WRNET 0xc000 /* logical write */ 29 #define PS_DETACH 0xd000 /* normal/diagnostic detach */ 30 #define PS_ATTACH 0xe000 /* normal attach */ 31 #define PS_DATTACH 0xf000 /* diagnostic attach */ 32 33 #define PS_DIOREAD 0x4000 /* internal, wait for dioread attention */ 34 35 /* 36 * Command responses from PS300->host. 37 */ 38 #define PS_DMAOK(code) ((code)|0x0a00) /* successful dma transfer */ 39 #define PS_ADROK(code) ((code)|0x0100) /* successful address tranfer */ 40 41 #define PS_CODE(v) ((v)&0xf000) /* extract code from PS300 msg */ 42 #define PS_LUNIT(v) ((v)&0x000f) /* extract PS300 unit from msg */ 43 44 /* 45 * Single unit PS300 address list. 46 */ 47 struct psalist { 48 u_short nblocks; /* # of i/o vectors (we always use 1) */ 49 u_short addr[2]; /* PS300 address */ 50 u_short wc; /* transfer size */ 51 }; 52 53 /* 54 * The max dma size is actually 64KB, but 55 * we limit it to be just large enough for 56 * the maximum vector list as this is sufficient 57 * for our needs and we must allocate real 58 * memory to the intermediate buffer. 59 */ 60 #define PS_MAXDMA (1024+2048*12) 61 62 /* 63 * Pseudo commands used internally by the driver. 64 */ 65 #define PS_DMAOUT 0x0100 /* dma buffer host->PS300 */ 66 #define PS_DMAIN 0x0200 /* dma buffer PS300->host */ 67 68 /* 69 * Default timeouts. 70 */ 71 #define PS_TIMEOUT 30 /* dma/attention timeout (in hz) */ 72 #define PS_DIOTIMO 1000 /* dio polling timeout */ 73