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Annotation of researchv10dc/lsys/sys/scsi.h, revision 1.1.1.1

1.1       root        1: #define        SCSICMD         10      /* max cmd size */
                      2: #define        SCSIDATA        (4*1024)
                      3: #define        SCSISTATUS      8       /* includes csr&per */
                      4: #define        SCSITOHOST      0x10000
                      5: 
                      6: #define        OPEN    1               /* somebody has the device open */
                      7: #define        USED    2               /* ever opened */
                      8: #define        NEXTWR  4               /* next cmd must be write */
                      9: #define        DONE    8               /* io done */
                     10: #define        PEND    16              /* we expect an interrupt */
                     11: 
                     12: struct bag
                     13: {
                     14:        struct { short msg_len; short pad; struct mscmd msg; } cmd;
                     15:        struct { short msg_len; short pad; struct msend msg; } rsp;
                     16:        struct {
                     17:                short ca_cmdint;
                     18:                short ca_rspint;
                     19:                long ca_rspdsc[1];
                     20:                long ca_cmddsc[1];
                     21:        } ca;
                     22: };
                     23: /*
                     24:        US design
                     25: */
                     26: struct scsipkt
                     27: {
                     28:        long cmd;
                     29:        long data;
                     30:        long status;
                     31:        long count;
                     32:        short bus_id;
                     33: };
                     34: struct playpen
                     35: {
                     36:        struct scsipkt upkt;            /* must be first */
                     37:        unsigned char cmd[SCSICMD];
                     38:        unsigned char data[SCSIDATA];
                     39:        unsigned char status[SCSISTATUS];
                     40: };
                     41: 
                     42: struct scsi {
                     43:        int flag;
                     44:        struct udadevice *addr;
                     45:        uaddr_t u1, u2;
                     46:        ubm_t ub1, ub2;
                     47:        struct buf *b1, *b2;
                     48:        struct bag *junk;
                     49:        unsigned char *data;
                     50:        short sa;
                     51:        char status[SCSISTATUS];
                     52:        struct scsireg *reg;
                     53:        struct playpen pp;
                     54: };

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