/* * @(#)psproto.h 7.1 (Berkeley) 5/21/88 */ /* * PS300-Host Handshake Protocol Definitions. */ /* * Commands sent from host->PS300. * * In the initial handshake carried out when requesting * one of these commands be performed, the PS300 always * returns the identical code to indicate success. */ #define PS_ABORT 0x1000 /* abort current command */ #define PS_RESET 0x3000 /* reset device */ #define PS_RDNET 0x5000 /* logical read */ #define PS_LOOKUP 0x8000 /* name lookup */ #define PS_RDPHY 0x9000 /* physical read */ #define PS_WRPHY_SYNC 0xa000 /* physical write w/ sync */ #define PS_WRPHY 0xb000 /* physical write */ #define PS_WRNET 0xc000 /* logical write */ #define PS_DETACH 0xd000 /* normal/diagnostic detach */ #define PS_ATTACH 0xe000 /* normal attach */ #define PS_DATTACH 0xf000 /* diagnostic attach */ #define PS_DIOREAD 0x4000 /* internal, wait for dioread attention */ /* * Command responses from PS300->host. */ #define PS_DMAOK(code) ((code)|0x0a00) /* successful dma transfer */ #define PS_ADROK(code) ((code)|0x0100) /* successful address tranfer */ #define PS_CODE(v) ((v)&0xf000) /* extract code from PS300 msg */ #define PS_LUNIT(v) ((v)&0x000f) /* extract PS300 unit from msg */ /* * Single unit PS300 address list. */ struct psalist { u_short nblocks; /* # of i/o vectors (we always use 1) */ u_short addr[2]; /* PS300 address */ u_short wc; /* transfer size */ }; /* * The max dma size is actually 64KB, but * we limit it to be just large enough for * the maximum vector list as this is sufficient * for our needs and we must allocate real * memory to the intermediate buffer. */ #define PS_MAXDMA (1024+2048*12) /* * Pseudo commands used internally by the driver. */ #define PS_DMAOUT 0x0100 /* dma buffer host->PS300 */ #define PS_DMAIN 0x0200 /* dma buffer PS300->host */ /* * Default timeouts. */ #define PS_TIMEOUT 30 /* dma/attention timeout (in hz) */ #define PS_DIOTIMO 1000 /* dio polling timeout */