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Annotation of 43BSDTahoe/sys/tahoevba/psproto.h, revision 1.1.1.1

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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