Imported Upstream version 1.1.11upstream/1.1.11upstream

1 files changed, 562 insertions, 0 deletions

diff --git a/libusal/scsi-dos.c b/libusal/scsi-dos.c
new file mode 100644
index 0000000..ecf36ce
--- /dev/null
+++ b/libusal/scsi-dos.c
@@ -0,0 +1,562 @@
+/*
+ * This file has been modified for the cdrkit suite.
+ *
+ * The behaviour and appearence of the program code below can differ to a major
+ * extent from the version distributed by the original author(s).
+ *
+ * For details, see Changelog file distributed with the cdrkit package. If you
+ * received this file from another source then ask the distributing person for
+ * a log of modifications.
+ *
+ */
+
+/* @(#)scsi-dos.c	1.11 03/12/10 Copyright 1998-2003 J. Schilling, 2003 Alex Kopylov reanimatolog@yandex.ru */
+/*
+ *	Interface for the MS-DOS ASPI managers.
+ *	You need ASPI manager installed in your config.sys:
+ *		aspi*.sys for SCSI devices
+ *		oakaspi.sys for ATAPI devices
+ *		usbaspi.sys for USB devices
+ *
+ *	Made from Win32 ASPI library template.
+ *
+ *	Warning: you may change this source, but if you do that
+ *	you need to change the _usal_version and _usal_auth* string below.
+ *	You may not return "schily" for an SCG_AUTHOR request anymore.
+ *	Choose your name instead of "schily" and make clear that the version
+ *	string is related to a modified source.
+ *
+ *	Copyright (c) 1998-2003 J. Schilling
+ *	Copyright (c) 1999 A.L. Faber for the first implementation
+ *			   of this interface.
+ *	Copyright (c) 2003 Alex Kopylov reanimatolog@yandex.ru
+ */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING.  If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <dos.h>
+#include <dpmi.h>
+#include <go32.h>
+#include <usal/aspi-dos.h>
+
+/*
+ *	Warning: you may change this source, but if you do that
+ *	you need to change the _usal_version and _usal_auth* string below.
+ *	You may not return "schily" for an SCG_AUTHOR request anymore.
+ *	Choose your name instead of "schily" and make clear that the version
+ *	string is related to a modified source.
+ */
+static	char	_usal_trans_version[] = "scsi-dos.c-1.11";	/* The version for this transport*/
+
+#define	MAX_SCG	8
+#define	MAX_TGT	8
+#define	MAX_LUN	8
+
+struct usal_local {
+	int	dummy;
+};
+#define	usallocal(p)	((struct usal_local *)((p)->local))
+
+#define	MAX_DMA_DOS	(63L*1024L)
+
+static	BYTE	busses		= 1;
+static	DWORD	SCSIMgrEntry	= 0;
+static	int	AspiLoaded	= 0;
+
+static	BOOL	_callback_flag;
+static	_go32_dpmi_seginfo _callback_info;
+static	_go32_dpmi_registers _callback_regs;
+
+static	BOOL	SCSIMgrOpen(SCSI *);
+static	void	SCSIMgrClose(void);
+static	int 	SCSIMgrSendSRB(SRB *, time_t);
+static	void	SCSIMgrCallBack(_go32_dpmi_registers *regs);
+
+static char *
+usalo_version(SCSI *usalp, int what)
+{
+	if (usalp != (SCSI *)0) {
+		switch (what) {
+
+		case SCG_VERSION:
+			return (_usal_trans_version);
+		case SCG_AUTHOR:
+			return (_usal_auth_cdrkit);
+		case SCG_SCCS_ID:
+			return (__sccsid);
+		}
+	}
+	return ((char *)0);
+}
+
+static int
+usalo_help(SCSI *usalp, FILE *f)
+{
+	__usal_help(f, "ASPI", "Generic transport independent SCSI",
+		"", "bus,target,lun", "1,2,0", TRUE, FALSE);
+	return (0);
+}
+
+static int
+usalo_open(SCSI *usalp, char *device)
+{
+	int	busno	= usal_scsibus(usalp);
+	int	tgt	= usal_target(usalp);
+	int	tlun	= usal_lun(usalp);
+
+	if (busno >= MAX_SCG || tgt >= MAX_TGT || tlun >= MAX_LUN) {
+		errno = EINVAL;
+		if (usalp->errstr)
+			snprintf(usalp->errstr, SCSI_ERRSTR_SIZE,
+				"Illegal value for busno, target or lun '%d,%d,%d'",
+				busno, tgt, tlun);
+		return (-1);
+	}
+
+	if ((device != NULL && *device != '\0') || (busno == -2 && tgt == -2)) {
+		errno = EINVAL;
+		if (usalp->errstr)
+			snprintf(usalp->errstr, SCSI_ERRSTR_SIZE,
+				"Open by 'devname' not supported on this OS");
+		return (-1);
+	}
+
+	/*
+	 *  Check if variables are within the range
+	 */
+	if (tgt >= 0 && tgt >= 0 && tlun >= 0) {
+		/*
+		 * This is the non -scanbus case.
+		 */
+		;
+	} else if (tgt != -1 || tgt != -1 || tlun != -1) {
+		errno = EINVAL;
+		return (-1);
+	}
+
+	if (usalp->local == NULL) {
+		usalp->local = malloc(sizeof (struct usal_local));
+		if (usalp->local == NULL)
+			return (0);
+	}
+	/*
+	 * Try to open ASPI-Router
+	 */
+	if (!SCSIMgrOpen(usalp))
+		return (-1);
+
+	/*
+	 * More than we have ...
+	 */
+	if (busno >= busses) {
+		SCSIMgrClose();
+		return (-1);
+	}
+
+	/*
+	 * Install Exit Function which closes the ASPI-Router
+	 */
+	atexit(SCSIMgrClose);
+
+	/*
+	 * Success after all
+	 */
+	return (1);
+}
+
+static int
+usalo_close(SCSI *usalp)
+{
+	SCSIMgrClose();
+	return (0);
+}
+
+static long
+usalo_maxdma(SCSI *usalp, long amt)
+{
+	return (MAX_DMA_DOS);
+}
+
+static void *
+usalo_getbuf(SCSI *usalp, long amt)
+{
+	if (usalp->debug > 0) {
+		fprintf((FILE *)usalp->errfile,
+				"usalo_getbuf: %ld bytes\n", amt);
+	}
+	usalp->bufbase = malloc((size_t)(amt));
+	return (usalp->bufbase);
+}
+
+static void
+usalo_freebuf(SCSI *usalp)
+{
+	if (usalp->bufbase)
+		free(usalp->bufbase);
+	usalp->bufbase = NULL;
+}
+
+static __SBOOL
+usalo_havebus(SCSI *usalp, int busno)
+{
+	if (busno < 0 || busno >= busses)
+		return (FALSE);
+
+	return (TRUE);
+}
+
+static int
+usalo_fileno(SCSI *usalp, int busno, int tgt, int tlun)
+{
+	if (busno < 0 || busno >= busses ||
+	    tgt < 0 || tgt >= MAX_TGT ||
+	    tlun < 0 || tlun >= MAX_LUN)
+		return (-1);
+
+	/*
+	 * Return fake
+	 */
+	return (1);
+}
+
+static int
+usalo_initiator_id(SCSI *usalp)
+{
+	return (-1);
+}
+
+static int
+usalo_isatapi(SCSI *usalp)
+{
+	return (-1);
+}
+
+static int
+usalo_reset(SCSI *usalp, int what)
+{
+	errno = EINVAL;
+	return (-1);
+}
+
+static int
+usalo_send(SCSI *usalp)
+{
+	struct usal_cmd	*sp = usalp->scmd;
+	SRB		Srb;
+	int		dos_memory_data_seg;
+	int		dos_memory_data_sel;
+	DWORD		dos_memory_data_ptr;
+
+	/*
+	 * Check if ASPI library is loaded
+	 */
+	if (!SCSIMgrEntry) {
+		errmsgno(EX_BAD, "error in usalo_send: ASPI driver not loaded.\n");
+		sp->error = SCG_FATAL;
+		return (-1);
+	}
+
+	if (usalp->fd < 0) {
+		sp->error = SCG_FATAL;
+		return (0);
+	}
+
+	/*
+	 * Initialize variables
+	 */
+	sp->error		= SCG_NO_ERROR;
+	sp->sense_count		= 0;
+	sp->u_scb.cmd_scb[0]	= 0;
+	sp->resid		= 0;
+
+	memset(&Srb, 0, sizeof (Srb));
+
+	switch (sp->cdb_len) {
+
+	case 6:
+		movebytes(&sp->cdb, &(Srb.Type.ExecSCSICmd.CmdLen._6.CDBByte), sp->cdb_len);
+		break;
+	case 10:
+		movebytes(&sp->cdb, &(Srb.Type.ExecSCSICmd.CmdLen._10.CDBByte), sp->cdb_len);
+		break;
+	case 12:
+		movebytes(&sp->cdb, &(Srb.Type.ExecSCSICmd.CmdLen._12.CDBByte), sp->cdb_len);
+		break;
+	default:
+		sp->error = SCG_FATAL;
+		sp->ux_errno = EINVAL;
+		fprintf((FILE *)usalp->errfile,
+			"Unsupported sp->cdb_len: %u. Fatal error in usalo_send, exiting...\n", sp->cdb_len);
+		return (-1);
+	}
+
+	if ((dos_memory_data_seg = __dpmi_allocate_dos_memory((sp->size>>4)+1, &dos_memory_data_sel)) == -1) {
+		sp->error = SCG_FATAL;
+		return (-1);
+	}
+	dos_memory_data_ptr = dos_memory_data_seg<<16;
+
+	_dosmemputb(sp->addr, sp->size, dos_memory_data_seg<<4);
+
+	Srb.Cmd = SC_EXEC_SCSI_CMD;
+	Srb.HaId = usal_scsibus(usalp);
+	Srb.Type.ExecSCSICmd.Target = usal_target(usalp);
+	Srb.Type.ExecSCSICmd.Lun = usal_lun(usalp);
+	Srb.Type.ExecSCSICmd.BufLen = sp->size;
+	Srb.Type.ExecSCSICmd.BufPointer = (void *)dos_memory_data_ptr;
+	Srb.Type.ExecSCSICmd.CDBLen = sp->cdb_len;
+	if (sp->sense_len <= (SENSE_LEN+2))
+		Srb.Type.ExecSCSICmd.SenseLen = sp->sense_len;
+	else
+		Srb.Type.ExecSCSICmd.SenseLen = (SENSE_LEN+2);
+
+	/*
+	 * Enable SCSIMgrCallBack()
+	 */
+	Srb.Flags |= SRB_POSTING;
+	Srb.Type.ExecSCSICmd.PostProc = (void *)(_callback_info.rm_offset|(_callback_info.rm_segment<<16));
+
+	/*
+	 * Do we receive data from this ASPI command?
+	 */
+	if (sp->flags & SCG_RECV_DATA) {
+
+		Srb.Flags |= SRB_DIR_IN;
+	} else {
+		/*
+		 * Set direction to output
+		 */
+		if (sp->size > 0) {
+			Srb.Flags |= SRB_DIR_OUT;
+		}
+	}
+
+	SCSIMgrSendSRB(&Srb, usalp->scmd->timeout);
+	Srb.Type.ExecSCSICmd.BufPointer = sp->addr;
+	_dosmemgetb(dos_memory_data_seg<<4, sp->size, sp->addr);
+	__dpmi_free_dos_memory(dos_memory_data_sel);
+
+	if (Srb.Status == SS_PENDING) {	/* Check if we got a timeout*/
+		if (usalp->debug > 0) {
+			fprintf((FILE *)usalp->errfile,
+					"Timeout....\n");
+		}
+			sp->error = SCG_TIMEOUT;
+		return (1);		/* Return error		    */
+	}
+
+	/*
+	 * Check ASPI command status
+	 */
+	if (Srb.Status != SS_COMP) {
+
+		if (usalp->debug > 0) {
+			fprintf((FILE *)usalp->errfile,
+				"Error in usalo_send: Srb.Status is 0x%x\n", Srb.Status);
+		}
+
+		switch (Srb.Status) {
+
+			case SS_COMP:			/* 0x01 SRB completed without error */
+				sp->error = SCG_NO_ERROR;
+				sp->ux_errno = 0;
+				break;
+
+			case SS_PENDING:		/* 0x00 SRB being processed	    */
+			case SS_ABORTED:		/* 0x02 SRB aborted		    */
+			case SS_ABORT_FAIL:		/* 0x03 Unable to abort SRB	    */
+			default:
+				sp->error = SCG_RETRYABLE;
+				sp->ux_errno = EIO;
+				break;
+
+			case SS_ERR:			/* 0x04 SRB completed with error    */
+				/*
+				 * If the SCSI Status byte is != 0, we definitely could send
+				 * the command to the target. We signal NO transport error.
+				 */
+				sp->error = SCG_NO_ERROR;
+				sp->ux_errno = EIO;
+				if (Srb.Type.ExecSCSICmd.TargStat)
+					break;
+
+			case SS_INVALID_CMD:		/* 0x80 Invalid ASPI command	    */
+			case SS_INVALID_HA:		/* 0x81 Invalid host adapter number */
+			case SS_NO_DEVICE:		/* 0x82 SCSI device not installed   */
+				sp->error = SCG_FATAL;
+				sp->ux_errno = EINVAL;
+				break;
+		}
+
+		sp->sense_count	= Srb.Type.ExecSCSICmd.SenseLen;
+		if (sp->sense_count > sp->sense_len)
+			sp->sense_count = sp->sense_len;
+
+		memset(&sp->u_sense.Sense, 0x00, sizeof (sp->u_sense.Sense));
+
+		switch (sp->cdb_len) {
+
+		case 6:
+			memcpy(&sp->u_sense.Sense, Srb.Type.ExecSCSICmd.CmdLen._6.SenseArea, sp->sense_count);
+			break;
+		case 10:
+			memcpy(&sp->u_sense.Sense, Srb.Type.ExecSCSICmd.CmdLen._10.SenseArea, sp->sense_count);
+			break;
+		case 12:
+			memcpy(&sp->u_sense.Sense, Srb.Type.ExecSCSICmd.CmdLen._12.SenseArea, sp->sense_count);
+			break;
+		}
+		sp->u_scb.cmd_scb[0] = Srb.Type.ExecSCSICmd.TargStat;
+
+		if (usalp->debug > 0) {
+			fprintf((FILE *)usalp->errfile,
+				"Mapped to: error %d errno: %d\n", sp->error, sp->ux_errno);
+		}
+		return (1);
+	}
+
+	return (0);
+}
+
+static BOOL
+SCSIMgrOpen(SCSI *usalp)
+{
+	int		hSCSIMgr;
+	int		dos_memory_seg;
+	int		dos_memory_sel;
+	__dpmi_regs	_regs;
+	SRB		Srb;
+
+	if (SCSIMgrEntry) {
+		AspiLoaded++;
+		return (TRUE);
+	}
+
+	/*
+	 * Open "SCSIMRG$"
+	 */
+	if (!_dos_open("SCSIMGR$", 0, &hSCSIMgr)) {
+
+		/* Alloc 16 bytes DOS memory */
+		if ((dos_memory_seg = __dpmi_allocate_dos_memory(1, &dos_memory_sel)) != -1) {
+
+			/* Look for SCSIMgr entry point */
+			memset(&_regs, 0, sizeof (_regs));
+			_regs.x.ax = 0x4402;
+			_regs.x.bx = hSCSIMgr;
+			_regs.x.cx = 0x0004;
+			_regs.x.ds = dos_memory_seg;
+			_regs.x.dx = 0x0000;
+			if (!__dpmi_simulate_real_mode_interrupt(0x21,  &_regs)) {
+				_dosmemgetb(dos_memory_seg<<4, 4, &SCSIMgrEntry);
+			}
+
+			/* Free DOS memory */
+			__dpmi_free_dos_memory(dos_memory_sel);
+		}
+
+		/* Close "SCSIMRG$" */
+		_dos_close(hSCSIMgr);
+
+		/* Allocate real mode callback */
+		_callback_info.pm_offset = (unsigned long)&SCSIMgrCallBack;
+		if (_go32_dpmi_allocate_real_mode_callback_retf(&_callback_info, &_callback_regs) == -1) {
+			fprintf((FILE *)usalp->errfile, "Cannot allocate callback address!\n");
+			SCSIMgrEntry = 0;
+		}
+	}
+
+	/* SCSIMgr entry point founded? */
+	if (!SCSIMgrEntry) {
+		fprintf((FILE *)usalp->errfile, "Cannot open ASPI manager! Try to get one from http://bootcd.narod.ru/\n");
+		return (FALSE);
+	}
+
+	memset(&Srb, 0, sizeof (Srb));
+	Srb.Cmd = SC_HA_INQUIRY;
+
+	SCSIMgrSendSRB(&Srb, 10);
+
+	if (usalp->debug) {
+		fprintf((FILE *)usalp->errfile, "Status : %ld\n", Srb.Status);
+		fprintf((FILE *)usalp->errfile, "hacount: %d\n", Srb.Type.HAInquiry.Count);
+		fprintf((FILE *)usalp->errfile, "SCSI id: %d\n", Srb.Type.HAInquiry.SCSI_ID);
+		fprintf((FILE *)usalp->errfile, "Manager: '%.16s'\n", Srb.Type.HAInquiry.ManagerId);
+		fprintf((FILE *)usalp->errfile, "Identif: '%.16s'\n", Srb.Type.HAInquiry.Identifier);
+		usal_prbytes("Unique:", Srb.Type.HAInquiry.Unique, 16);
+	}
+
+	AspiLoaded++;
+	return (TRUE);
+}
+
+static void
+SCSIMgrClose()
+{
+	if (--AspiLoaded > 0)
+		return;
+	if (SCSIMgrEntry) {
+		_go32_dpmi_free_real_mode_callback(&_callback_info);
+		SCSIMgrEntry = 0;
+	}
+}
+
+static int
+SCSIMgrSendSRB(SRB *Srb, time_t timeout)
+{
+	int		dos_memory_srb_seg;
+	int		dos_memory_srb_sel;
+	DWORD		dos_memory_srb_ptr;
+	struct timeval	st;
+	struct timeval	cr;
+	__dpmi_regs	_regs;
+
+	/* Alloc DOS memory */
+	if ((dos_memory_srb_seg = __dpmi_allocate_dos_memory((sizeof (SRB) >> 4) + 1, &dos_memory_srb_sel)) == -1) {
+		Srb->Status = SS_NO_DEVICE; /* ??? fatal error */
+		return (Srb->Status);
+	}
+	dos_memory_srb_ptr = dos_memory_srb_seg<<16;
+
+	/* Copy SRB to DOS memory */
+	_dosmemputb((void *)Srb, sizeof (SRB), dos_memory_srb_seg<<4);
+
+	/* Reset callback flag */
+	_callback_flag = 0;
+
+	/* Call SCSIMgr */
+	memset(&_regs, 0, sizeof (_regs));
+	_regs.x.ip = SCSIMgrEntry & 0xffff;
+	_regs.x.cs = SCSIMgrEntry >> 16;
+	__dpmi_simulate_real_mode_procedure_retf_stack(&_regs, 2, &dos_memory_srb_ptr);
+
+	/* Wait 'timeout' seconds for Srb->Status != SS_PENDING */
+	gettimeofday(&st, NULL);
+	do {
+		_dosmemgetb(dos_memory_srb_seg << 4, sizeof (SRB), (void *)Srb);
+		gettimeofday(&cr, NULL);
+	} while ((Srb->Status == SS_PENDING) && (cr.tv_sec - st.tv_sec < timeout));
+
+	/* Free DOS memory */
+	__dpmi_free_dos_memory(dos_memory_srb_sel);
+
+	return (Srb->Status);
+}
+
+static void
+SCSIMgrCallBack(_go32_dpmi_registers *regs)
+{
+	_callback_flag = 1;
+}