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Annotation of 43BSDTahoe/sys/tahoevba/psproto.h, revision 1.1

1.1     ! root        1: /*
        !             2:  *     @(#)psproto.h   7.1 (Berkeley) 5/21/88
        !             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 */

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