Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 2693 insertions, 0 deletions

diff --git a/drivers/scsi/tmscsim.c b/drivers/scsi/tmscsim.c
new file mode 100644
index 000000000000..ee9df02efd5b
--- /dev/null
+++ b/drivers/scsi/tmscsim.c
@@ -0,0 +1,2693 @@
+/************************************************************************
+ *	FILE NAME : TMSCSIM.C						*
+ *	     BY   : C.L. Huang,  ching@tekram.com.tw			*
+ *	Description: Device Driver for Tekram DC-390(T) PCI SCSI	*
+ *		     Bus Master Host Adapter				*
+ * (C)Copyright 1995-1996 Tekram Technology Co., Ltd.			*
+ ************************************************************************
+ * (C) Copyright: put under GNU GPL in 10/96				*
+ *				(see Documentation/scsi/tmscsim.txt)	*
+ ************************************************************************
+ * $Id: tmscsim.c,v 2.60.2.30 2000/12/20 01:07:12 garloff Exp $		*
+ *	Enhancements and bugfixes by					*
+ *	Kurt Garloff <kurt@garloff.de>	<garloff@suse.de>		*
+ ************************************************************************
+ *	HISTORY:							*
+ *									*
+ *	REV#	DATE	NAME	DESCRIPTION				*
+ *	1.00  96/04/24	CLH	First release				*
+ *	1.01  96/06/12	CLH	Fixed bug of Media Change for Removable *
+ *				Device, scan all LUN. Support Pre2.0.10 *
+ *	1.02  96/06/18	CLH	Fixed bug of Command timeout ...	*
+ *	1.03  96/09/25	KG	Added tmscsim_proc_info()		*
+ *	1.04  96/10/11	CLH	Updating for support KV 2.0.x		*
+ *	1.05  96/10/18	KG	Fixed bug in DC390_abort(null ptr deref)*
+ *	1.06  96/10/25	KG	Fixed module support			*
+ *	1.07  96/11/09	KG	Fixed tmscsim_proc_info()		*
+ *	1.08  96/11/18	KG	Fixed null ptr in DC390_Disconnect()	*
+ *	1.09  96/11/30	KG	Added register the allocated IO space	*
+ *	1.10  96/12/05	CLH	Modified tmscsim_proc_info(), and reset *
+ *				pending interrupt in DC390_detect()	*
+ *	1.11  97/02/05	KG/CLH	Fixeds problem with partitions greater	*
+ *				than 1GB				*
+ *	1.12  98/02/15  MJ      Rewritten PCI probing			*
+ *	1.13  98/04/08	KG	Support for non DC390, __initfunc decls,*
+ *				changed max devs from 10 to 16		*
+ *	1.14a 98/05/05	KG	Dynamic DCB allocation, add-single-dev	*
+ *				for LUNs if LUN_SCAN (BIOS) not set	*
+ *				runtime config using /proc interface	*
+ *	1.14b 98/05/06	KG	eliminated cli (); sti (); spinlocks	*
+ *	1.14c 98/05/07	KG	2.0.x compatibility			*
+ *	1.20a 98/05/07	KG	changed names of funcs to be consistent *
+ *				DC390_ (entry points), dc390_ (internal)*
+ *				reworked locking			*
+ *	1.20b 98/05/12	KG	bugs: version, kfree, _ctmp		*
+ *				debug output				*
+ *	1.20c 98/05/12	KG	bugs: kfree, parsing, EEpromDefaults	*
+ *	1.20d 98/05/14	KG	bugs: list linkage, clear flag after  	*
+ *				reset on startup, code cleanup		*
+ *	1.20e 98/05/15	KG	spinlock comments, name space cleanup	*
+ *				pLastDCB now part of ACB structure	*
+ *				added stats, timeout for 2.1, TagQ bug	*
+ *				RESET and INQUIRY interface commands	*
+ *	1.20f 98/05/18	KG	spinlocks fixes, max_lun fix, free DCBs	*
+ *				for missing LUNs, pending int		*
+ *	1.20g 98/05/19	KG	Clean up: Avoid short			*
+ *	1.20h 98/05/21	KG	Remove AdaptSCSIID, max_lun ...		*
+ *	1.20i 98/05/21	KG	Aiiie: Bug with TagQMask       		*
+ *	1.20j 98/05/24	KG	Handle STAT_BUSY, handle pACB->pLinkDCB	*
+ *				== 0 in remove_dev and DoingSRB_Done	*
+ *	1.20k 98/05/25	KG	DMA_INT	(experimental)	       		*
+ *	1.20l 98/05/27	KG	remove DMA_INT; DMA_IDLE cmds added;	*
+ *	1.20m 98/06/10	KG	glitch configurable; made some global	*
+ *				vars part of ACB; use DC390_readX	*
+ *	1.20n 98/06/11	KG	startup params				*
+ *	1.20o 98/06/15	KG	added TagMaxNum to boot/module params	*
+ *				Device Nr -> Idx, TagMaxNum power of 2  *
+ *	1.20p 98/06/17	KG	Docu updates. Reset depends on settings *
+ *				pci_set_master added; 2.0.xx: pcibios_*	*
+ *				used instead of MechNum things ...	*
+ *	1.20q 98/06/23	KG	Changed defaults. Added debug code for	*
+ *				removable media and fixed it. TagMaxNum	*
+ *				fixed for DC390. Locking: ACB, DRV for	*
+ *				better IRQ sharing. Spelling: Queueing	*
+ *				Parsing and glitch_cfg changes. Display	*
+ *				real SyncSpeed value. Made DisConn	*
+ *				functional (!)				*
+ *	1.20r 98/06/30	KG	Debug macros, allow disabling DsCn, set	*
+ *				BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module	*
+ *				param -1 fixed.				*
+ *	1.20s 98/08/20	KG	Debug info on abort(), try to check PCI,*
+ *				phys_to_bus instead of phys_to_virt,	*
+ *				fixed sel. process, fixed locking,	*
+ *				added MODULE_XXX infos, changed IRQ	*
+ *				request flags, disable DMA_INT		*
+ *	1.20t 98/09/07	KG	TagQ report fixed; Write Erase DMA Stat;*
+ *				initfunc -> __init; better abort;	*
+ *				Timeout for XFER_DONE & BLAST_COMPLETE;	*
+ *				Allow up to 33 commands being processed *
+ *	2.0a  98/10/14	KG	Max Cmnds back to 17. DMA_Stat clearing *
+ *				all flags. Clear within while() loops	*
+ *				in DataIn_0/Out_0. Null ptr in dumpinfo	*
+ *				for pSRB==0. Better locking during init.*
+ *				bios_param() now respects part. table.	*
+ *	2.0b  98/10/24	KG	Docu fixes. Timeout Msg in DMA Blast.	*
+ *				Disallow illegal idx in INQUIRY/REMOVE	*
+ *	2.0c  98/11/19	KG	Cleaned up detect/init for SMP boxes, 	*
+ *				Write Erase DMA (1.20t) caused problems	*
+ *	2.0d  98/12/25	KG	Christmas release ;-) Message handling  *
+ *				completely reworked. Handle target ini-	*
+ *				tiated SDTR correctly.			*
+ *	2.0d1 99/01/25	KG	Try to handle RESTORE_PTR		*
+ *	2.0d2 99/02/08	KG	Check for failure of kmalloc, correct 	*
+ *				inclusion of scsicam.h, DelayReset	*
+ *	2.0d3 99/05/31	KG	DRIVER_OK -> DID_OK, DID_NO_CONNECT,	*
+ *				detect Target mode and warn.		*
+ *				pcmd->result handling cleaned up.	*
+ *	2.0d4 99/06/01	KG	Cleaned selection process. Found bug	*
+ *				which prevented more than 16 tags. Now:	*
+ *				24. SDTR cleanup. Cleaner multi-LUN	*
+ *				handling. Don't modify ControlRegs/FIFO	*
+ *				when connected.				*
+ *	2.0d5 99/06/01	KG	Clear DevID, Fix INQUIRY after cfg chg.	*
+ *	2.0d6 99/06/02	KG	Added ADD special command to allow cfg.	*
+ *				before detection. Reset SYNC_NEGO_DONE	*
+ *				after a bus reset.			*
+ *	2.0d7 99/06/03	KG	Fixed bugs wrt add,remove commands	*
+ *	2.0d8 99/06/04	KG	Removed copying of cmnd into CmdBlock.	*
+ *				Fixed Oops in _release().		*
+ *	2.0d9 99/06/06	KG	Also tag queue INQUIRY, T_U_R, ...	*
+ *				Allow arb. no. of Tagged Cmnds. Max 32	*
+ *	2.0d1099/06/20	KG	TagMaxNo changes now honoured! Queueing *
+ *				clearified (renamed ..) TagMask handling*
+ *				cleaned.				*
+ *	2.0d1199/06/28	KG	cmd->result now identical to 2.0d2	*
+ *	2.0d1299/07/04	KG	Changed order of processing in IRQ	*
+ *	2.0d1399/07/05	KG	Don't update DCB fields if removed	*
+ *	2.0d1499/07/05	KG	remove_dev: Move kfree() to the end	*
+ *	2.0d1599/07/12	KG	use_new_eh_code: 0, ULONG -> UINT where	*
+ *				appropriate				*
+ *	2.0d1699/07/13	KG	Reenable StartSCSI interrupt, Retry msg	*
+ *	2.0d1799/07/15	KG	Remove debug msg. Disable recfg. when	*
+ *				there are queued cmnds			*
+ *	2.0d1899/07/18	KG	Selection timeout: Don't requeue	*
+ *	2.0d1999/07/18	KG	Abort: Only call scsi_done if dequeued	*
+ *	2.0d2099/07/19	KG	Rst_Detect: DoingSRB_Done		*
+ *	2.0d2199/08/15	KG	dev_id for request/free_irq, cmnd[0] for*
+ *				RETRY, SRBdone does DID_ABORT for the 	*
+ *				cmd passed by DC390_reset()		*
+ *	2.0d2299/08/25	KG	dev_id fixed. can_queue: 42		*
+ *	2.0d2399/08/25	KG	Removed some debugging code. dev_id 	*
+ *				now is set to pACB. Use u8,u16,u32. 	*
+ *	2.0d2499/11/14	KG	Unreg. I/O if failed IRQ alloc. Call	*
+ * 				done () w/ DID_BAD_TARGET in case of	*
+ *				missing DCB. We	are old EH!!		*
+ *	2.0d2500/01/15	KG	2.3.3x compat from Andreas Schultz	*
+ *				set unique_id. Disable RETRY message.	*
+ *	2.0d2600/01/29	KG	Go to new EH.				*
+ *	2.0d2700/01/31	KG	... but maintain 2.0 compat.		*
+ *				and fix DCB freeing			*
+ *	2.0d2800/02/14	KG	Queue statistics fixed, dump special cmd*
+ *				Waiting_Timer for failed StartSCSI	*
+ *				New EH: Don't return cmnds to ML on RST *
+ *				Use old EH (don't have new EH fns yet)	*
+ * 				Reset: Unlock, but refuse to queue	*
+ * 				2.3 __setup function			*
+ *	2.0e  00/05/22	KG	Return residual for 2.3			*
+ *	2.0e1 00/05/25	KG	Compile fixes for 2.3.99		*
+ *	2.0e2 00/05/27	KG	Jeff Garzik's pci_enable_device()	*
+ *	2.0e3 00/09/29	KG	Some 2.4 changes. Don't try Sync Nego	*
+ *				before INQUIRY has reported ability. 	*
+ *				Recognise INQUIRY as scanning command.	*
+ *	2.0e4 00/10/13	KG	Allow compilation into 2.4 kernel	*
+ *	2.0e5 00/11/17	KG	Store Inq.flags in DCB			*
+ *	2.0e6 00/11/22  KG	2.4 init function (Thx to O.Schumann)	*
+ * 				2.4 PCI device table (Thx to A.Richter)	*
+ *	2.0e7 00/11/28	KG	Allow overriding of BIOS settings	*
+ *	2.0f  00/12/20	KG	Handle failed INQUIRYs during scan	*
+ *	2.1a  03/11/29  GL, KG	Initial fixing for 2.6. Convert to	*
+ *				use the current PCI-mapping API, update	*
+ *				command-queuing.			*
+ *	2.1b  04/04/13  GL	Fix for 64-bit platforms		*
+ *	2.1b1 04/01/31	GL	(applied 05.04) Remove internal		*
+ *				command-queuing.			*
+ *	2.1b2 04/02/01	CH	(applied 05.04) Fix error-handling	*
+ *	2.1c  04/05/23  GL	Update to use the new pci_driver API,	*
+ *				some scsi EH updates, more cleanup.	*
+ *	2.1d  04/05/27	GL	Moved setting of scan_devices to	*
+ *				slave_alloc/_configure/_destroy, as	*
+ *				suggested by CH.			*
+ ***********************************************************************/
+
+/* DEBUG options */
+//#define DC390_DEBUG0
+//#define DC390_DEBUG1
+//#define DC390_DCBDEBUG
+//#define DC390_PARSEDEBUG
+//#define DC390_REMOVABLEDEBUG
+//#define DC390_LOCKDEBUG
+
+//#define NOP do{}while(0)
+#define C_NOP
+
+/* Debug definitions */
+#ifdef DC390_DEBUG0
+# define DEBUG0(x) x
+#else
+# define DEBUG0(x) C_NOP
+#endif
+#ifdef DC390_DEBUG1
+# define DEBUG1(x) x
+#else
+# define DEBUG1(x) C_NOP
+#endif
+#ifdef DC390_DCBDEBUG
+# define DCBDEBUG(x) x
+#else
+# define DCBDEBUG(x) C_NOP
+#endif
+#ifdef DC390_PARSEDEBUG
+# define PARSEDEBUG(x) x
+#else
+# define PARSEDEBUG(x) C_NOP
+#endif
+#ifdef DC390_REMOVABLEDEBUG
+# define REMOVABLEDEBUG(x) x
+#else
+# define REMOVABLEDEBUG(x) C_NOP
+#endif
+#define DCBDEBUG1(x) C_NOP
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/pci.h>
+#include <linux/proc_fs.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/blkdev.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <asm/io.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsicam.h>
+#include <scsi/scsi_tcq.h>
+
+
+#define DC390_BANNER "Tekram DC390/AM53C974"
+#define DC390_VERSION "2.1d 2004-05-27"
+
+#define PCI_DEVICE_ID_AMD53C974 	PCI_DEVICE_ID_AMD_SCSI
+
+#include "tmscsim.h"
+
+
+static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
+
+static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB );
+static void dc390_Disconnect( struct dc390_acb* pACB );
+static void dc390_Reselect( struct dc390_acb* pACB );
+static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB );
+static void dc390_ScsiRstDetect( struct dc390_acb* pACB );
+static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*);
+static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB);
+static void dc390_ResetDevParam(struct dc390_acb* pACB);
+
+static u32	dc390_laststatus = 0;
+static u8	dc390_adapterCnt = 0;
+
+/* Startup values, to be overriden on the commandline */
+static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
+
+module_param_array(tmscsim, int, NULL, 0);
+MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
+MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
+MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
+
+static void *dc390_phase0[]={
+       dc390_DataOut_0,
+       dc390_DataIn_0,
+       dc390_Command_0,
+       dc390_Status_0,
+       dc390_Nop_0,
+       dc390_Nop_0,
+       dc390_MsgOut_0,
+       dc390_MsgIn_0,
+       dc390_Nop_1
+       };
+
+static void *dc390_phase1[]={
+       dc390_DataOutPhase,
+       dc390_DataInPhase,
+       dc390_CommandPhase,
+       dc390_StatusPhase,
+       dc390_Nop_0,
+       dc390_Nop_0,
+       dc390_MsgOutPhase,
+       dc390_MsgInPhase,
+       dc390_Nop_1
+       };
+
+#ifdef DC390_DEBUG1
+static char* dc390_p0_str[] = {
+       "dc390_DataOut_0",
+       "dc390_DataIn_0",
+       "dc390_Command_0",
+       "dc390_Status_0",
+       "dc390_Nop_0",
+       "dc390_Nop_0",
+       "dc390_MsgOut_0",
+       "dc390_MsgIn_0",
+       "dc390_Nop_1"
+       };
+     
+static char* dc390_p1_str[] = {
+       "dc390_DataOutPhase",
+       "dc390_DataInPhase",
+       "dc390_CommandPhase",
+       "dc390_StatusPhase",
+       "dc390_Nop_0",
+       "dc390_Nop_0",
+       "dc390_MsgOutPhase",
+       "dc390_MsgInPhase",
+       "dc390_Nop_1"
+       };
+#endif   
+
+static u8  dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
+static u8  dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
+static u8  dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
+
+/***********************************************************************
+ * Functions for the management of the internal structures 
+ * (DCBs, SRBs, Queueing)
+ *
+ **********************************************************************/
+static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
+{
+   struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
+   while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
+     {
+	pDCB = pDCB->pNextDCB;
+	if (pDCB == pACB->pLinkDCB)
+	     return NULL;
+     }
+   DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n",	\
+		      pDCB, pDCB->TargetID, pDCB->TargetLUN));
+   return pDCB;
+}
+
+/* Insert SRB oin top of free list */
+static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
+{
+    DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
+    pSRB->pNextSRB = pACB->pFreeSRB;
+    pACB->pFreeSRB = pSRB;
+}
+
+static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
+{
+    pDCB->GoingSRBCnt++;
+    DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
+    /* Append to the list of Going commands */
+    if( pDCB->pGoingSRB )
+	pDCB->pGoingLast->pNextSRB = pSRB;
+    else
+	pDCB->pGoingSRB = pSRB;
+
+    pDCB->pGoingLast = pSRB;
+    /* No next one in sent list */
+    pSRB->pNextSRB = NULL;
+}
+
+static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
+{
+	DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
+   if (pSRB == pDCB->pGoingSRB)
+	pDCB->pGoingSRB = pSRB->pNextSRB;
+   else
+     {
+	struct dc390_srb* psrb = pDCB->pGoingSRB;
+	while (psrb && psrb->pNextSRB != pSRB)
+	  psrb = psrb->pNextSRB;
+	if (!psrb) 
+	  { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
+	psrb->pNextSRB = pSRB->pNextSRB;
+	if (pSRB == pDCB->pGoingLast)
+	  pDCB->pGoingLast = psrb;
+     }
+   pDCB->GoingSRBCnt--;
+}
+
+static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
+{
+	memset(sg, 0, sizeof(struct scatterlist));
+	sg->page	= virt_to_page(addr);
+	sg->length	= length;
+	sg->offset	= (unsigned long)addr & ~PAGE_MASK;
+	return sg;
+}
+
+/* Create pci mapping */
+static int dc390_pci_map (struct dc390_srb* pSRB)
+{
+	int error = 0;
+	struct scsi_cmnd *pcmd = pSRB->pcmd;
+	struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
+	dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
+
+	/* Map sense buffer */
+	if (pSRB->SRBFlag & AUTO_REQSENSE) {
+		pSRB->pSegmentList	= dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer));
+		pSRB->SGcount		= pci_map_sg(pdev, pSRB->pSegmentList, 1,
+						     DMA_FROM_DEVICE);
+		cmdp->saved_dma_handle	= sg_dma_address(pSRB->pSegmentList);
+
+		/* TODO: error handling */
+		if (pSRB->SGcount != 1)
+			error = 1;
+		DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
+	/* Map SG list */
+	} else if (pcmd->use_sg) {
+		pSRB->pSegmentList	= (struct scatterlist *) pcmd->request_buffer;
+		pSRB->SGcount		= pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg,
+						     pcmd->sc_data_direction);
+		/* TODO: error handling */
+		if (!pSRB->SGcount)
+			error = 1;
+		DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
+			      __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
+	/* Map single segment */
+	} else if (pcmd->request_buffer && pcmd->request_bufflen) {
+		pSRB->pSegmentList	= dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen);
+		pSRB->SGcount		= pci_map_sg(pdev, pSRB->pSegmentList, 1,
+						     pcmd->sc_data_direction);
+		cmdp->saved_dma_handle	= sg_dma_address(pSRB->pSegmentList);
+
+		/* TODO: error handling */
+		if (pSRB->SGcount != 1)
+			error = 1;
+		DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
+	/* No mapping !? */	
+    	} else
+		pSRB->SGcount = 0;
+
+	return error;
+}
+
+/* Remove pci mapping */
+static void dc390_pci_unmap (struct dc390_srb* pSRB)
+{
+	struct scsi_cmnd *pcmd = pSRB->pcmd;
+	struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
+	DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
+
+	if (pSRB->SRBFlag) {
+		pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
+		DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
+	} else if (pcmd->use_sg) {
+		pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction);
+		DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
+	} else if (pcmd->request_buffer && pcmd->request_bufflen) {
+		pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction);
+		DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
+	}
+}
+
+static void __inline__
+dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
+{
+	if (pSRB->TagNumber != SCSI_NO_TAG) {
+		pDCB->TagMask &= ~(1 << pSRB->TagNumber);   /* free tag mask */
+		pSRB->TagNumber = SCSI_NO_TAG;
+	}
+}
+
+
+static int
+dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
+{
+    struct scsi_cmnd *scmd = pSRB->pcmd;
+    struct scsi_device *sdev = scmd->device;
+    u8 cmd, disc_allowed, try_sync_nego;
+    char tag[2];
+
+    pSRB->ScsiPhase = SCSI_NOP0;
+
+    if (pACB->Connected)
+    {
+	// Should not happen normally
+	printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
+		pSRB->SRBState, pSRB->SRBFlag);
+	pSRB->SRBState = SRB_READY;
+	pACB->SelConn++;
+	return 1;
+    }
+    if (time_before (jiffies, pACB->pScsiHost->last_reset))
+    {
+	DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
+	return 1;
+    }
+    /* KG: Moved pci mapping here */
+    dc390_pci_map(pSRB);
+    /* TODO: error handling */
+    DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
+    DC390_write8 (Sync_Period, pDCB->SyncPeriod);
+    DC390_write8 (Sync_Offset, pDCB->SyncOffset);
+    DC390_write8 (CtrlReg1, pDCB->CtrlR1);
+    DC390_write8 (CtrlReg3, pDCB->CtrlR3);
+    DC390_write8 (CtrlReg4, pDCB->CtrlR4);
+    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);		/* Flush FIFO */
+    DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
+            scmd->cmnd[0], pDCB->SyncMode));
+
+    /* Don't disconnect on AUTO_REQSENSE, cause it might be an
+     * Contingent Allegiance Condition (6.6), where no tags should be used.
+     * All other have to be allowed to disconnect to prevent Incorrect 
+     * Initiator Connection (6.8.2/6.5.2) */
+    /* Changed KG, 99/06/06 */
+    if (! (pSRB->SRBFlag & AUTO_REQSENSE))
+	disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
+    else
+	disc_allowed = 0;
+
+    if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
+	(((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
+	  !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
+      try_sync_nego = 1;
+    else
+      try_sync_nego = 0;
+
+    pSRB->MsgCnt = 0;
+    cmd = SEL_W_ATN;
+    DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
+    /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
+    if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) {
+	DC390_write8(ScsiFifo, tag[0]);
+	pDCB->TagMask |= 1 << tag[1];
+	pSRB->TagNumber = tag[1];
+	DC390_write8(ScsiFifo, tag[1]);
+	DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->pid, pSRB, tag[1]));
+	cmd = SEL_W_ATN3;
+    } else {
+	/* No TagQ */
+//no_tag:
+	DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->pid, pSRB));
+    }
+
+    pSRB->SRBState = SRB_START_;
+
+    if (try_sync_nego)
+      { 
+	u8 Sync_Off = pDCB->SyncOffset;
+        DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN));
+	pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
+	pSRB->MsgOutBuf[1] = 3;
+	pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
+	pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
+	if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
+	pSRB->MsgOutBuf[4] = Sync_Off;
+	pSRB->MsgCnt = 5;
+	//pSRB->SRBState = SRB_MSGOUT_;
+	pSRB->SRBState |= DO_SYNC_NEGO;
+	cmd = SEL_W_ATN_STOP;
+      }
+
+    /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
+    if (cmd != SEL_W_ATN_STOP)
+      {
+	if( pSRB->SRBFlag & AUTO_REQSENSE )
+	  {
+	    DC390_write8 (ScsiFifo, REQUEST_SENSE);
+	    DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
+	    DC390_write8 (ScsiFifo, 0);
+	    DC390_write8 (ScsiFifo, 0);
+	    DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer));
+	    DC390_write8 (ScsiFifo, 0);
+	    DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
+	  }
+	else	/* write cmnd to bus */ 
+	  {
+	    u8 *ptr; u8 i;
+	    ptr = (u8 *)scmd->cmnd;
+	    for (i = 0; i < scmd->cmd_len; i++)
+	      DC390_write8 (ScsiFifo, *(ptr++));
+	  }
+      }
+    DEBUG0(if (pACB->pActiveDCB)	\
+	   printk (KERN_WARNING "DC390: ActiveDCB != 0\n"));
+    DEBUG0(if (pDCB->pActiveSRB)	\
+	   printk (KERN_WARNING "DC390: ActiveSRB != 0\n"));
+    //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
+    if (DC390_read8 (Scsi_Status) & INTERRUPT)
+    {
+	dc390_freetag (pDCB, pSRB);
+	DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n",
+		scmd->pid, scmd->device->id, scmd->device->lun));
+	pSRB->SRBState = SRB_READY;
+	//DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
+	pACB->SelLost++;
+	return 1;
+    }
+    DC390_write8 (ScsiCmd, cmd);
+    pACB->pActiveDCB = pDCB;
+    pDCB->pActiveSRB = pSRB;
+    pACB->Connected = 1;
+    pSRB->ScsiPhase = SCSI_NOP1;
+    return 0;
+}
+
+//#define DMA_INT EN_DMA_INT /*| EN_PAGE_INT*/
+#define DMA_INT 0
+
+#if DMA_INT
+/* This is similar to AM53C974.c ... */
+static u8 
+dc390_dma_intr (struct dc390_acb* pACB)
+{
+  struct dc390_srb* pSRB;
+  u8 dstate;
+  DEBUG0(u16 pstate; struct pci_dev *pdev = pACB->pdev);
+  
+  DEBUG0(pci_read_config_word(pdev, PCI_STATUS, &pstate));
+  DEBUG0(if (pstate & (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY))\
+	{ printk(KERN_WARNING "DC390: PCI state = %04x!\n", pstate); \
+	  pci_write_config_word(pdev, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));});
+
+  dstate = DC390_read8 (DMA_Status); 
+
+  if (! pACB->pActiveDCB || ! pACB->pActiveDCB->pActiveSRB) return dstate;
+  else pSRB  = pACB->pActiveDCB->pActiveSRB;
+  
+  if (dstate & (DMA_XFER_ABORT | DMA_XFER_ERROR | POWER_DOWN | PCI_MS_ABORT))
+    {
+	printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate);
+	return dstate;
+    }
+  if (dstate & DMA_XFER_DONE)
+    {
+	u32 residual, xferCnt; int ctr = 6000000;
+	if (! (DC390_read8 (DMA_Cmd) & READ_DIRECTION))
+	  {
+	    do
+	      {
+		DEBUG1(printk (KERN_DEBUG "DC390: read residual bytes ... \n"));
+		dstate = DC390_read8 (DMA_Status);
+		residual = DC390_read8 (CtcReg_Low) | DC390_read8 (CtcReg_Mid) << 8 |
+		  DC390_read8 (CtcReg_High) << 16;
+		residual += DC390_read8 (Current_Fifo) & 0x1f;
+	      } while (residual && ! (dstate & SCSI_INTERRUPT) && --ctr);
+	    if (!ctr) printk (KERN_CRIT "DC390: dma_intr: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
+	    /* residual =  ... */
+	  }
+	else
+	    residual = 0;
+	
+	/* ??? */
+	
+	xferCnt = pSRB->SGToBeXferLen - residual;
+	pSRB->SGBusAddr += xferCnt;
+	pSRB->TotalXferredLen += xferCnt;
+	pSRB->SGToBeXferLen = residual;
+# ifdef DC390_DEBUG0
+	printk (KERN_INFO "DC390: DMA: residual = %i, xfer = %i\n", 
+		(unsigned int)residual, (unsigned int)xferCnt);
+# endif
+	
+	DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
+    }
+  dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
+  return dstate;
+}
+#endif
+
+
+static void __inline__
+dc390_InvalidCmd(struct dc390_acb* pACB)
+{
+	if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
+		DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
+}
+
+
+static irqreturn_t __inline__
+DC390_Interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+    struct dc390_acb *pACB = (struct dc390_acb*)dev_id;
+    struct dc390_dcb *pDCB;
+    struct dc390_srb *pSRB;
+    u8  sstatus=0;
+    u8  phase;
+    void   (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
+    u8  istate, istatus;
+#if DMA_INT
+    u8  dstatus;
+#endif
+
+    sstatus = DC390_read8 (Scsi_Status);
+    if( !(sstatus & INTERRUPT) )
+	return IRQ_NONE;
+
+    DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
+
+#if DMA_INT
+    spin_lock_irq(pACB->pScsiHost->host_lock);
+    dstatus = dc390_dma_intr (pACB);
+    spin_unlock_irq(pACB->pScsiHost->host_lock);
+
+    DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus));
+    if (! (dstatus & SCSI_INTERRUPT))
+      {
+	DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n"));
+	return IRQ_NONE;
+      }
+#else
+    //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
+    //dstatus = DC390_read8 (DMA_Status);
+    //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
+#endif
+
+    spin_lock_irq(pACB->pScsiHost->host_lock);
+
+    istate = DC390_read8 (Intern_State);
+    istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
+
+    DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
+    dc390_laststatus &= ~0x00ffffff;
+    dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
+
+    if (sstatus & ILLEGAL_OP_ERR)
+    {
+	printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
+	dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
+    }
+	
+    else if (istatus &  INVALID_CMD)
+    {
+	printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
+	dc390_InvalidCmd( pACB );
+	goto unlock;
+    }
+
+    if (istatus &  SCSI_RESET)
+    {
+	dc390_ScsiRstDetect( pACB );
+	goto unlock;
+    }
+
+    if (istatus &  DISCONNECTED)
+    {
+	dc390_Disconnect( pACB );
+	goto unlock;
+    }
+
+    if (istatus &  RESELECTED)
+    {
+	dc390_Reselect( pACB );
+	goto unlock;
+    }
+
+    else if (istatus & (SELECTED | SEL_ATTENTION))
+    {
+	printk (KERN_ERR "DC390: Target mode not supported!\n");
+	goto unlock;
+    }
+
+    if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
+    {
+	pDCB = pACB->pActiveDCB;
+	if (!pDCB)
+	{
+		printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
+		goto unlock;
+	}
+	pSRB = pDCB->pActiveSRB;
+	if( pDCB->DCBFlag & ABORT_DEV_ )
+	  dc390_EnableMsgOut_Abort (pACB, pSRB);
+
+	phase = pSRB->ScsiPhase;
+	DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
+	stateV = (void *) dc390_phase0[phase];
+	( *stateV )( pACB, pSRB, &sstatus );
+
+	pSRB->ScsiPhase = sstatus & 7;
+	phase = (u8) sstatus & 7;
+	DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
+	stateV = (void *) dc390_phase1[phase];
+	( *stateV )( pACB, pSRB, &sstatus );
+    }
+
+ unlock:
+    spin_unlock_irq(pACB->pScsiHost->host_lock);
+    return IRQ_HANDLED;
+}
+
+static irqreturn_t do_DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs)
+{
+    irqreturn_t ret;
+    DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
+    /* Locking is done in DC390_Interrupt */
+    ret = DC390_Interrupt(irq, dev_id, regs);
+    DEBUG1(printk (".. IRQ returned\n"));
+    return ret;
+}
+
+static void
+dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
+{
+    u8   sstatus;
+    struct scatterlist *psgl;
+    u32    ResidCnt, xferCnt;
+    u8   dstate = 0;
+
+    sstatus = *psstatus;
+
+    if( !(pSRB->SRBState & SRB_XFERPAD) )
+    {
+	if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
+	    pSRB->SRBStatus |= PARITY_ERROR;
+
+	if( sstatus & COUNT_2_ZERO )
+	{
+	    unsigned long timeout = jiffies + HZ;
+
+	    /* Function called from the ISR with the host_lock held and interrupts disabled */
+	    if (pSRB->SGToBeXferLen)
+		while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
+		    spin_unlock_irq(pACB->pScsiHost->host_lock);
+		    udelay(50);
+		    spin_lock_irq(pACB->pScsiHost->host_lock);
+		}
+	    if (!time_before(jiffies, timeout))
+		printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
+			DC390_read32 (DMA_Wk_ByteCntr));
+	    dc390_laststatus &= ~0xff000000;
+	    dc390_laststatus |= dstate << 24;
+	    pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
+	    pSRB->SGIndex++;
+	    if( pSRB->SGIndex < pSRB->SGcount )
+	    {
+		pSRB->pSegmentList++;
+		psgl = pSRB->pSegmentList;
+
+		pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
+		pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
+	    }
+	    else
+		pSRB->SGToBeXferLen = 0;
+	}
+	else
+	{
+	    ResidCnt  = (u32) DC390_read8 (Current_Fifo) & 0x1f;
+	    ResidCnt |= (u32) DC390_read8 (CtcReg_High) << 16;
+	    ResidCnt |= (u32) DC390_read8 (CtcReg_Mid) << 8; 
+	    ResidCnt += (u32) DC390_read8 (CtcReg_Low);
+
+	    xferCnt = pSRB->SGToBeXferLen - ResidCnt;
+	    pSRB->SGBusAddr += xferCnt;
+	    pSRB->TotalXferredLen += xferCnt;
+	    pSRB->SGToBeXferLen = ResidCnt;
+	}
+    }
+    if ((*psstatus & 7) != SCSI_DATA_OUT)
+    {
+	    DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
+	    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
+    }	    
+}
+
+static void
+dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
+{
+    u8   sstatus, residual, bval;
+    struct scatterlist *psgl;
+    u32    ResidCnt, i;
+    unsigned long   xferCnt;
+    u8      *ptr;
+
+    sstatus = *psstatus;
+
+    if( !(pSRB->SRBState & SRB_XFERPAD) )
+    {
+	if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
+	    pSRB->SRBStatus |= PARITY_ERROR;
+
+	if( sstatus & COUNT_2_ZERO )
+	{
+	    int dstate = 0;
+	    unsigned long timeout = jiffies + HZ;
+
+	    /* Function called from the ISR with the host_lock held and interrupts disabled */
+	    if (pSRB->SGToBeXferLen)
+		while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
+		    spin_unlock_irq(pACB->pScsiHost->host_lock);
+		    udelay(50);
+		    spin_lock_irq(pACB->pScsiHost->host_lock);
+		}
+	    if (!time_before(jiffies, timeout)) {
+		printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
+			DC390_read32 (DMA_Wk_ByteCntr));
+		printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
+	    }
+	    dc390_laststatus &= ~0xff000000;
+	    dc390_laststatus |= dstate << 24;
+	    DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16)	\
+		+ ((unsigned long) DC390_read8 (CtcReg_Mid) << 8)		\
+		+ ((unsigned long) DC390_read8 (CtcReg_Low)));
+	    DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%i,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen));
+
+	    DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
+
+	    pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
+	    pSRB->SGIndex++;
+	    if( pSRB->SGIndex < pSRB->SGcount )
+	    {
+		pSRB->pSegmentList++;
+		psgl = pSRB->pSegmentList;
+
+		pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
+		pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
+	    }
+	    else
+		pSRB->SGToBeXferLen = 0;
+	}
+	else	/* phase changed */
+	{
+	    residual = 0;
+	    bval = DC390_read8 (Current_Fifo);
+	    while( bval & 0x1f )
+	    {
+		DEBUG1(printk (KERN_DEBUG "Check for residuals,"));
+		if( (bval & 0x1f) == 1 )
+		{
+		    for(i=0; i < 0x100; i++)
+		    {
+			bval = DC390_read8 (Current_Fifo);
+			if( !(bval & 0x1f) )
+			    goto din_1;
+			else if( i == 0x0ff )
+			{
+			    residual = 1;   /* ;1 residual byte */
+			    goto din_1;
+			}
+		    }
+		}
+		else
+		    bval = DC390_read8 (Current_Fifo);
+	    }
+din_1:
+	    DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
+	    for (i = 0xa000; i; i--)
+	    {
+		bval = DC390_read8 (DMA_Status);
+		if (bval & BLAST_COMPLETE)
+		    break;
+	    }
+	    /* It seems a DMA Blast abort isn't that bad ... */
+	    if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
+	    //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
+	    dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24;
+
+	    DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
+	    ResidCnt = (u32) DC390_read8 (CtcReg_High);
+	    ResidCnt <<= 8;
+	    ResidCnt |= (u32) DC390_read8 (CtcReg_Mid);
+	    ResidCnt <<= 8;
+	    ResidCnt |= (u32) DC390_read8 (CtcReg_Low);
+
+	    xferCnt = pSRB->SGToBeXferLen - ResidCnt;
+	    pSRB->SGBusAddr += xferCnt;
+	    pSRB->TotalXferredLen += xferCnt;
+	    pSRB->SGToBeXferLen = ResidCnt;</