1 /* 2 * @(#)psproto.h 7.1 (Berkeley) 05/21/88 3 */ 4 5 /* 6 * PS300-Host Handshake Protocol Definitions. 7 */ 8 9 /* 10 * Commands sent from host->PS300. 11 * 12 * In the initial handshake carried out when requesting 13 * one of these commands be performed, the PS300 always 14 * returns the identical code to indicate success. 15 */ 16 #define PS_ABORT 0x1000 /* abort current command */ 17 #define PS_RESET 0x3000 /* reset device */ 18 #define PS_RDNET 0x5000 /* logical read */ 19 #define PS_LOOKUP 0x8000 /* name lookup */ 20 #define PS_RDPHY 0x9000 /* physical read */ 21 #define PS_WRPHY_SYNC 0xa000 /* physical write w/ sync */ 22 #define PS_WRPHY 0xb000 /* physical write */ 23 #define PS_WRNET 0xc000 /* logical write */ 24 #define PS_DETACH 0xd000 /* normal/diagnostic detach */ 25 #define PS_ATTACH 0xe000 /* normal attach */ 26 #define PS_DATTACH 0xf000 /* diagnostic attach */ 27 28 #define PS_DIOREAD 0x4000 /* internal, wait for dioread attention */ 29 30 /* 31 * Command responses from PS300->host. 32 */ 33 #define PS_DMAOK(code) ((code)|0x0a00) /* successful dma transfer */ 34 #define PS_ADROK(code) ((code)|0x0100) /* successful address tranfer */ 35 36 #define PS_CODE(v) ((v)&0xf000) /* extract code from PS300 msg */ 37 #define PS_LUNIT(v) ((v)&0x000f) /* extract PS300 unit from msg */ 38 39 /* 40 * Single unit PS300 address list. 41 */ 42 struct psalist { 43 u_short nblocks; /* # of i/o vectors (we always use 1) */ 44 u_short addr[2]; /* PS300 address */ 45 u_short wc; /* transfer size */ 46 }; 47 48 /* 49 * The max dma size is actually 64KB, but 50 * we limit it to be just large enough for 51 * the maximum vector list as this is sufficient 52 * for our needs and we must allocate real 53 * memory to the intermediate buffer. 54 */ 55 #define PS_MAXDMA (1024+2048*12) 56 57 /* 58 * Pseudo commands used internally by the driver. 59 */ 60 #define PS_DMAOUT 0x0100 /* dma buffer host->PS300 */ 61 #define PS_DMAIN 0x0200 /* dma buffer PS300->host */ 62 63 /* 64 * Default timeouts. 65 */ 66 #define PS_TIMEOUT 30 /* dma/attention timeout (in hz) */ 67 #define PS_DIOTIMO 1000 /* dio polling timeout */ 68