1 /* psproto.h 1.1 86/11/29 */ 2 3 /* 4 * PS300-Host Handshake Protocol Definitions. 5 */ 6 7 /* 8 * Commands sent from host->PS300. 9 * 10 * In the initial handshake carried out when requesting 11 * one of these commands be performed, the PS300 always 12 * returns the identical code to indicate success. 13 */ 14 #define PS_ABORT 0x1000 /* abort current command */ 15 #define PS_RESET 0x3000 /* reset device */ 16 #define PS_RDNET 0x5000 /* logical read */ 17 #define PS_LOOKUP 0x8000 /* name lookup */ 18 #define PS_RDPHY 0x9000 /* physical read */ 19 #define PS_WRPHY_SYNC 0xa000 /* physical write w/ sync */ 20 #define PS_WRPHY 0xb000 /* physical write */ 21 #define PS_WRNET 0xc000 /* logical write */ 22 #define PS_DETACH 0xd000 /* normal/diagnostic detach */ 23 #define PS_ATTACH 0xe000 /* normal attach */ 24 #define PS_DATTACH 0xf000 /* diagnostic attach */ 25 26 #define PS_DIOREAD 0x4000 /* internal, wait for dioread attention */ 27 28 /* 29 * Command responses from PS300->host. 30 */ 31 #define PS_DMAOK(code) ((code)|0x0a00) /* successful dma transfer */ 32 #define PS_ADROK(code) ((code)|0x0100) /* successful address tranfer */ 33 34 #define PS_CODE(v) ((v)&0xf000) /* extract code from PS300 msg */ 35 #define PS_LUNIT(v) ((v)&0x000f) /* extract PS300 unit from msg */ 36 37 /* 38 * Single unit PS300 address list. 39 */ 40 struct psalist { 41 u_short nblocks; /* # of i/o vectors (we always use 1) */ 42 u_short addr[2]; /* PS300 address */ 43 u_short wc; /* transfer size */ 44 }; 45 46 /* 47 * The max dma size is actually 64KB, but 48 * we limit it to be just large enough for 49 * the maximum vector list as this is sufficient 50 * for our needs and we must allocate real 51 * memory to the intermediate buffer. 52 */ 53 #define PS_MAXDMA (1024+2048*12) 54 55 /* 56 * Pseudo commands used internally by the driver. 57 */ 58 #define PS_DMAOUT 0x0100 /* dma buffer host->PS300 */ 59 #define PS_DMAIN 0x0200 /* dma buffer PS300->host */ 60 61 /* 62 * Default timeouts. 63 */ 64 #define PS_TIMEOUT 30 /* dma/attention timeout (in hz) */ 65 #define PS_DIOTIMO 1000 /* dio polling timeout */ 66