sys/src/cmd/scuzz/changer.c

   1 #include <u.h>
   2 #include <libc.h>
   3
   4 #include "scsireq.h"
   5
   6 long
   7 SReinitialise(ScsiReq *rp)
   8 {
   9         uchar cmd[6];
  10
  11         memset(cmd, 0, sizeof(cmd));
  12         cmd[0] = ScmdEInitialise;
  13         rp->cmd.p = cmd;
  14         rp->cmd.count = sizeof(cmd);
  15         rp->data.p = cmd;
  16         rp->data.count = 0;
  17         rp->data.write = 1;
  18         return SRrequest(rp);
  19 }
  20
  21 long
  22 SRmmove(ScsiReq *rp, int transport, int source, int destination, int invert)
  23 {
  24         uchar cmd[12];
  25
  26         memset(cmd, 0, sizeof(cmd));
  27         cmd[0] = ScmdMMove;
  28         cmd[2] = transport>>8;
  29         cmd[3] = transport;
  30         cmd[4] = source>>8;
  31         cmd[5] = source;
  32         cmd[6] = destination>>8;
  33         cmd[7] = destination;
  34         cmd[10] = invert & 0x01;
  35         rp->cmd.p = cmd;
  36         rp->cmd.count = sizeof(cmd);
  37         rp->data.p = cmd;
  38         rp->data.count = 0;
  39         rp->data.write = 1;
  40         return SRrequest(rp);
  41 }
  42
  43 long
  44 SRestatus(ScsiReq *rp, uchar type, uchar *list, int nbytes)
  45 {
  46         uchar cmd[12];
  47
  48         memset(cmd, 0, sizeof(cmd));
  49         cmd[0] = ScmdEStatus;
  50         cmd[1] = type & 0x07;
  51         cmd[4] = 0xFF;
  52         cmd[5] = 0xFF;
  53         cmd[7] = nbytes>>16;
  54         cmd[8] = nbytes>>8;
  55         cmd[9] = nbytes;
  56         rp->cmd.p = cmd;
  57         rp->cmd.count = sizeof(cmd);
  58         rp->data.p = list;
  59         rp->data.count = nbytes;
  60         rp->data.write = 0;
  61         return SRrequest(rp);
  62 }