ref: 128ea44a89c7905612ad2fa5a61a9325ddfb5e1e
dir: /sys/src/cmd/scuzz/cdr.c/
#include <u.h> #include <libc.h> #include "scsireq.h" long SRblank(ScsiReq *rp, uchar type, uchar track) { uchar cmd[12]; memset(cmd, 0, sizeof(cmd)); cmd[0] = ScmdBlank; cmd[1] = type; cmd[2] = track>>24; cmd[3] = track>>16; cmd[4] = track>>8; cmd[5] = track; rp->cmd.p = cmd; rp->cmd.count = sizeof(cmd); rp->data.p = cmd; rp->data.count = 0; rp->data.write = 1; return SRrequest(rp); } long SRsynccache(ScsiReq *rp) { uchar cmd[10]; memset(cmd, 0, sizeof(cmd)); cmd[0] = ScmdSynccache; rp->cmd.p = cmd; rp->cmd.count = sizeof(cmd); rp->data.p = cmd; rp->data.count = 0; rp->data.write = 1; return SRrequest(rp); } long SRTOC(ScsiReq *rp, void *data, int nbytes, uchar format, uchar track) { uchar cmd[10]; memset(cmd, 0, sizeof(cmd)); cmd[0] = ScmdRTOC; cmd[2] = format; cmd[6] = track; cmd[7] = nbytes>>8; cmd[8] = nbytes; rp->cmd.p = cmd; rp->cmd.count = sizeof(cmd); rp->data.p = data; rp->data.count = nbytes; rp->data.write = 0; return SRrequest(rp); } long SRrdiscinfo(ScsiReq *rp, void *data, int nbytes) { uchar cmd[10]; memset(cmd, 0, sizeof(cmd)); cmd[0] = ScmdRdiscinfo; cmd[7] = nbytes>>8; cmd[8] = nbytes; rp->cmd.p = cmd; rp->cmd.count = sizeof(cmd); rp->data.p = data; rp->data.count = nbytes; rp->data.write = 0; return SRrequest(rp); } long SRrtrackinfo(ScsiReq *rp, void *data, int nbytes, int track) { uchar cmd[10]; memset(cmd, 0, sizeof(cmd)); cmd[0] = ScmdRtrackinfo; cmd[1] = 0x01; cmd[2] = track>>24; cmd[3] = track>>16; cmd[4] = track>>8; cmd[5] = track; cmd[7] = nbytes>>8; cmd[8] = nbytes; rp->cmd.p = cmd; rp->cmd.count = sizeof(cmd); rp->data.p = data; rp->data.count = nbytes; rp->data.write = 0; return SRrequest(rp); } long SRfwaddr(ScsiReq *rp, uchar track, uchar mode, uchar npa, uchar *data) { uchar cmd[10]; memset(cmd, 0, sizeof(cmd)); cmd[0] = ScmdFwaddr; cmd[2] = track; cmd[3] = mode; cmd[7] = npa; rp->cmd.p = cmd; rp->cmd.count = sizeof(cmd); rp->data.p = data; rp->data.count = MaxDirData; rp->data.write = 0; return SRrequest(rp); } long SRtreserve(ScsiReq *rp, long nbytes) { uchar cmd[10]; long n; if((nbytes % rp->lbsize)){ rp->status = Status_BADARG; return -1; } memset(cmd, 0, sizeof(cmd)); cmd[0] = ScmdTreserve; n = nbytes/rp->lbsize; cmd[5] = n>>24; cmd[6] = n>>16; cmd[7] = n>>8; cmd[8] = n; rp->cmd.p = cmd; rp->cmd.count = sizeof(cmd); rp->data.p = cmd; rp->data.count = 0; rp->data.write = 1; return SRrequest(rp); } long SRtinfo(ScsiReq *rp, uchar track, uchar *data) { uchar cmd[10]; memset(cmd, 0, sizeof(cmd)); cmd[0] = ScmdTinfo; cmd[5] = track; cmd[8] = MaxDirData; rp->cmd.p = cmd; rp->cmd.count = sizeof(cmd); rp->data.p = data; rp->data.count = MaxDirData; rp->data.write = 0; return SRrequest(rp); } long SRwtrack(ScsiReq *rp, void *buf, long nbytes, uchar track, uchar mode) { uchar cmd[10]; long m, n; if((nbytes % rp->lbsize) || nbytes > maxiosize){ rp->status = Status_BADARG; return -1; } memset(cmd, 0, sizeof(cmd)); cmd[0] = ScmdTwrite; cmd[5] = track; cmd[6] = mode; n = nbytes/rp->lbsize; cmd[7] = n>>8; cmd[8] = n; rp->cmd.p = cmd; rp->cmd.count = sizeof(cmd); rp->data.p = buf; rp->data.count = nbytes; rp->data.write = 1; m = SRrequest(rp); if(m < 0) return -1; rp->offset += n; return m; } long SRmload(ScsiReq *rp, uchar code) { uchar cmd[12]; memset(cmd, 0, sizeof(cmd)); cmd[0] = ScmdMload; cmd[8] = code; rp->cmd.p = cmd; rp->cmd.count = sizeof(cmd); rp->data.p = cmd; rp->data.count = 0; rp->data.write = 1; return SRrequest(rp); } long SRfixation(ScsiReq *rp, uchar type) { uchar cmd[10]; memset(cmd, 0, sizeof(cmd)); cmd[0] = ScmdFixation; cmd[8] = type; rp->cmd.p = cmd; rp->cmd.count = sizeof(cmd); rp->data.p = cmd; rp->data.count = 0; rp->data.write = 1; return SRrequest(rp); }