1*30224Ssam /* psproto.h 1.1 86/11/29 */ 2*30224Ssam 3*30224Ssam /* 4*30224Ssam * PS300-Host Handshake Protocol Definitions. 5*30224Ssam */ 6*30224Ssam 7*30224Ssam /* 8*30224Ssam * Commands sent from host->PS300. 9*30224Ssam * 10*30224Ssam * In the initial handshake carried out when requesting 11*30224Ssam * one of these commands be performed, the PS300 always 12*30224Ssam * returns the identical code to indicate success. 13*30224Ssam */ 14*30224Ssam #define PS_ABORT 0x1000 /* abort current command */ 15*30224Ssam #define PS_RESET 0x3000 /* reset device */ 16*30224Ssam #define PS_RDNET 0x5000 /* logical read */ 17*30224Ssam #define PS_LOOKUP 0x8000 /* name lookup */ 18*30224Ssam #define PS_RDPHY 0x9000 /* physical read */ 19*30224Ssam #define PS_WRPHY_SYNC 0xa000 /* physical write w/ sync */ 20*30224Ssam #define PS_WRPHY 0xb000 /* physical write */ 21*30224Ssam #define PS_WRNET 0xc000 /* logical write */ 22*30224Ssam #define PS_DETACH 0xd000 /* normal/diagnostic detach */ 23*30224Ssam #define PS_ATTACH 0xe000 /* normal attach */ 24*30224Ssam #define PS_DATTACH 0xf000 /* diagnostic attach */ 25*30224Ssam 26*30224Ssam #define PS_DIOREAD 0x4000 /* internal, wait for dioread attention */ 27*30224Ssam 28*30224Ssam /* 29*30224Ssam * Command responses from PS300->host. 30*30224Ssam */ 31*30224Ssam #define PS_DMAOK(code) ((code)|0x0a00) /* successful dma transfer */ 32*30224Ssam #define PS_ADROK(code) ((code)|0x0100) /* successful address tranfer */ 33*30224Ssam 34*30224Ssam #define PS_CODE(v) ((v)&0xf000) /* extract code from PS300 msg */ 35*30224Ssam #define PS_LUNIT(v) ((v)&0x000f) /* extract PS300 unit from msg */ 36*30224Ssam 37*30224Ssam /* 38*30224Ssam * Single unit PS300 address list. 39*30224Ssam */ 40*30224Ssam struct psalist { 41*30224Ssam u_short nblocks; /* # of i/o vectors (we always use 1) */ 42*30224Ssam u_short addr[2]; /* PS300 address */ 43*30224Ssam u_short wc; /* transfer size */ 44*30224Ssam }; 45*30224Ssam 46*30224Ssam /* 47*30224Ssam * The max dma size is actually 64KB, but 48*30224Ssam * we limit it to be just large enough for 49*30224Ssam * the maximum vector list as this is sufficient 50*30224Ssam * for our needs and we must allocate real 51*30224Ssam * memory to the intermediate buffer. 52*30224Ssam */ 53*30224Ssam #define PS_MAXDMA (1024+2048*12) 54*30224Ssam 55*30224Ssam /* 56*30224Ssam * Pseudo commands used internally by the driver. 57*30224Ssam */ 58*30224Ssam #define PS_DMAOUT 0x0100 /* dma buffer host->PS300 */ 59*30224Ssam #define PS_DMAIN 0x0200 /* dma buffer PS300->host */ 60*30224Ssam 61*30224Ssam /* 62*30224Ssam * Default timeouts. 63*30224Ssam */ 64*30224Ssam #define PS_TIMEOUT 30 /* dma/attention timeout (in hz) */ 65*30224Ssam #define PS_DIOTIMO 1000 /* dio polling timeout */ 66