1991/0423/port/devscsi.c (diff list | history)

1991/0419/sys/src/9/port/devscsi.c:24,30 – 1991/0423/sys/src/9/port/devscsi.c:24,31 (short | long | prev | next)
1991/0110		#define NSCSI (sizeof scsidir/sizeof(Dirtab)) static Scsi staticcmd; /* BUG */ static uchar datablk[8192]; /* BUG */
1991/0423		#define DATASIZE (8*1024) static uchar datablk[DATASIZE]; /* BUG */
1991/0110		static int debugs[8]; static int isscsi;
1991/0419/sys/src/9/port/devscsi.c:120,126 – 1991/0423/sys/src/9/port/devscsi.c:121,138
1991/0110		void scsiclose(Chan *c) {}
1991/0423		{ Scsi *cmd = &staticcmd; if((c->qid.path & CHDIR) || c->qid.path==1) return; if((c->qid.path & 0xf) == Qcmd){ if(canqlock(cmd) || cmd->pid == u->p->pid){ cmd->pid = 0; qunlock(cmd); } } }
1991/0110		long
1991/0411		scsiread(Chan *c, char *a, long n, ulong offset)
1991/0419/sys/src/9/port/devscsi.c:132,137 – 1991/0423/sys/src/9/port/devscsi.c:144,150
1991/0110		return devdirread(c, a, n, 0, 0, scsigen); if(c->qid.path==1){
1991/0411		if(offset == 0){
1991/0423		/*void scsidump(void); scsidump();*/
1991/0110		*a = ownid; n = 1; }else
1991/0419/sys/src/9/port/devscsi.c:140,156 – 1991/0423/sys/src/9/port/devscsi.c:153,178
1991/0110		case Qcmd: if (n < 4) error(Ebadarg); /*if(canqlock(cmd)){
1991/0423		if(canqlock(cmd)){
1991/0110		qunlock(cmd); error(Egreg); }*/
1991/0423		} if(cmd->pid != u->p->pid) error(Egreg);
1991/0110		n = 4; *a++ = cmd->state>>8; *a++ = cmd->state;
1991/0423		*a++ = 0; *a++ = 0;
1991/0110		*a++ = cmd->status>>8; *a = cmd->status; /*qunlock(cmd);*/
1991/0423		cmd->pid = 0; qunlock(cmd);
1991/0110		break; case Qdata: if (n > sizeof datablk)
1991/0423		if(canqlock(cmd)){ qunlock(cmd); error(Egreg); } if(cmd->pid != u->p->pid) error(Egreg); if (n > DATASIZE)
1991/0110		error(Ebadarg); cmd->data.base = datablk; cmd->data.lim = cmd->data.base + n;
1991/0419/sys/src/9/port/devscsi.c:181,187 – 1991/0423/sys/src/9/port/devscsi.c:203,209
1991/0411		if(offset == 0){
1991/0110		n = 1; ownid=*a; scsiinit();
1991/0423		scsireset();
1991/0110		}else n = 0; }else switch ((int)c->qid.path & 0xf){
1991/0419/sys/src/9/port/devscsi.c:188,194 – 1991/0423/sys/src/9/port/devscsi.c:210,217
1991/0110		case Qcmd: if (n < 6 || n > sizeof cmd->cmdblk) error(Ebadarg); /*qlock(cmd);*/
1991/0423		qlock(cmd); cmd->pid = u->p->pid;
1991/0110		cmd->cmd.base = cmd->cmdblk;
1991/0318		memmove(cmd->cmd.base, a, n);
1991/0110		cmd->cmd.lim = cmd->cmd.base + n;
1991/0419/sys/src/9/port/devscsi.c:195,205 – 1991/0423/sys/src/9/port/devscsi.c:218,233
1991/0110		cmd->cmd.ptr = cmd->cmd.base; cmd->target = (c->qid.path>>4)&7; cmd->lun = (a[1]>>5)&7; cmd->state = 0; cmd->status = 0xFFFF; break; case Qdata: if (n > sizeof datablk)
1991/0423		if(canqlock(cmd)){ qunlock(cmd); error(Egreg); } if(cmd->pid != u->p->pid) error(Egreg); if (n > DATASIZE)
1991/0110		error(Ebadarg); cmd->data.base = datablk; cmd->data.lim = cmd->data.base + n;
1991/0419/sys/src/9/port/devscsi.c:234,251 – 1991/0423/sys/src/9/port/devscsi.c:262,282
1991/0110		error(Eperm); } void scsicmd(Scsi *cmd, int dev, int cmdbyte, uchar *buf, long size)
1991/0423		Scsi * scsicmd(int dev, int cmdbyte, long size)
1991/0110		{
1991/0423		Scsi *cmd = &staticcmd; if(size > DATASIZE) panic("scsicmd %d", size);
1991/0110		qlock(cmd); cmd->target = dev>>3; cmd->lun = dev&7; cmd->cmd.base = cmd->cmdblk; cmd->data.base = buf; cmd->cmd.ptr = cmd->cmd.base; memset(cmd->cmdblk, 0, sizeof cmd->cmdblk); cmd->cmdblk[0] = cmdbyte; switch (cmdbyte>>5) {
1991/0423		switch(cmdbyte>>5){
1991/0110		case 0: cmd->cmd.lim = &cmd->cmdblk[6]; break; case 1:
1991/0419/sys/src/9/port/devscsi.c:253,259 – 1991/0423/sys/src/9/port/devscsi.c:284,290
1991/0110		default: cmd->cmd.lim = &cmd->cmdblk[12]; break; } switch (cmdbyte) {
1991/0423		switch(cmdbyte){
1991/0110		case 0x00: /* test unit ready */ break; case 0x03: /* read sense data */
1991/0419/sys/src/9/port/devscsi.c:262,280 – 1991/0423/sys/src/9/port/devscsi.c:293,313
1991/0110		case 0x25: /* read capacity */ break; }
1991/0423		cmd->data.base = datablk;
1991/0110		cmd->data.lim = cmd->data.base + size; cmd->data.ptr = cmd->data.base; cmd->save = cmd->data.base;
1991/0423		return cmd;
1991/0110		} int scsiready(int dev) { static Scsi cmd;
1991/0423		Scsi *cmd = scsicmd(dev, 0x00, 0);
1991/0110		int status; scsicmd(&cmd, dev, 0x00, 0, 0); status = scsiexec(&cmd, 0); qunlock(&cmd);
1991/0423		status = scsiexec(cmd, 0); qunlock(cmd);
1991/0110		if ((status&0xff00) != 0x6000) error(Eio); return status&0xff;
1991/0419/sys/src/9/port/devscsi.c:281,295 – 1991/0423/sys/src/9/port/devscsi.c:314,327
1991/0110		} int scsisense(int dev, uchar *p)
1991/0423		scsisense(int dev, void *p)
1991/0110		{ static Scsi cmd; static uchar buf[18];
1991/0423		Scsi *cmd = scsicmd(dev, 0x03, 18);
1991/0110		int status; scsicmd(&cmd, dev, 0x03, buf, sizeof buf); status = scsiexec(&cmd, 1);
1991/0318		memmove(p, buf, sizeof buf);
1991/0110		qunlock(&cmd);
1991/0423		status = scsiexec(cmd, 1); memmove(p, cmd->data.base, 18); qunlock(cmd);
1991/0110		if ((status&0xff00) != 0x6000) error(Eio); return status&0xff;
1991/0419/sys/src/9/port/devscsi.c:296,310 – 1991/0423/sys/src/9/port/devscsi.c:328,341
1991/0110		} int scsicap(int dev, uchar *p)
1991/0423		scsicap(int dev, void *p)
1991/0110		{ static Scsi cmd; static uchar buf[8];
1991/0423		Scsi *cmd = scsicmd(dev, 0x25, 8);
1991/0110		int status; scsicmd(&cmd, dev, 0x25, buf, sizeof buf); status = scsiexec(&cmd, 1);
1991/0318		memmove(p, buf, sizeof buf);
1991/0110		qunlock(&cmd);
1991/0423		status = scsiexec(cmd, 1); memmove(p, cmd->data.base, 8); qunlock(cmd);
1991/0110		if ((status&0xff00) != 0x6000) error(Eio); return status&0xff;
1991/0419/sys/src/9/port/devscsi.c:381,386 – 1991/0423/sys/src/9/port/devscsi.c:412,418
1991/0110		nexterror(); } scsirflag = rflag;
1991/0423		p->rflag = rflag;
1991/0110		datap = p->data.base; if ((ownid & 0x08) && rflag) PUT(Dest_id, 0x40|p->target);