Linux-2.6.12-rc2v2.6.12-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, 4942 insertions, 0 deletions

diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
new file mode 100644
index 00000000000..cca41cf8d3e
--- /dev/null
+++ b/drivers/scsi/dc395x.c
@@ -0,0 +1,4942 @@
+/*
+ * dc395x.c
+ *
+ * Device Driver for Tekram DC395(U/UW/F), DC315(U)
+ * PCI SCSI Bus Master Host Adapter
+ * (SCSI chip set used Tekram ASIC TRM-S1040)
+ *
+ * Authors:
+ *  C.L. Huang <ching@tekram.com.tw>
+ *  Erich Chen <erich@tekram.com.tw>
+ *  (C) Copyright 1995-1999 Tekram Technology Co., Ltd.
+ *
+ *  Kurt Garloff <garloff@suse.de>
+ *  (C) 1999-2000 Kurt Garloff
+ *
+ *  Oliver Neukum <oliver@neukum.name>
+ *  Ali Akcaagac <aliakc@web.de>
+ *  Jamie Lenehan <lenehan@twibble.org>
+ *  (C) 2003
+ *
+ * License: GNU GPL
+ *
+ *************************************************************************
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************
+ */
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/delay.h>
+#include <linux/ctype.h>
+#include <linux/blkdev.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/pci.h>
+#include <linux/list.h>
+#include <linux/vmalloc.h>
+#include <asm/io.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsicam.h>	/* needed for scsicam_bios_param */
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+
+#include "dc395x.h"
+
+#define DC395X_NAME	"dc395x"
+#define DC395X_BANNER	"Tekram DC395(U/UW/F), DC315(U) - ASIC TRM-S1040"
+#define DC395X_VERSION	"v2.05, 2004/03/08"
+
+/*---------------------------------------------------------------------------
+                                  Features
+ ---------------------------------------------------------------------------*/
+/*
+ * Set to disable parts of the driver
+ */
+/*#define DC395x_NO_DISCONNECT*/
+/*#define DC395x_NO_TAGQ*/
+/*#define DC395x_NO_SYNC*/
+/*#define DC395x_NO_WIDE*/
+
+/*---------------------------------------------------------------------------
+                                  Debugging
+ ---------------------------------------------------------------------------*/
+/*
+ * Types of debugging that can be enabled and disabled
+ */
+#define DBG_KG		0x0001
+#define DBG_0		0x0002
+#define DBG_1		0x0004
+#define DBG_SG		0x0020
+#define DBG_FIFO	0x0040
+#define DBG_PIO		0x0080
+
+
+/*
+ * Set set of things to output debugging for.
+ * Undefine to remove all debugging
+ */
+/*#define DEBUG_MASK (DBG_0|DBG_1|DBG_SG|DBG_FIFO|DBG_PIO)*/
+/*#define  DEBUG_MASK	DBG_0*/
+
+
+/*
+ * Output a kernel mesage at the specified level and append the
+ * driver name and a ": " to the start of the message
+ */
+#define dprintkl(level, format, arg...)  \
+    printk(level DC395X_NAME ": " format , ## arg)
+
+
+#ifdef DEBUG_MASK
+/*
+ * print a debug message - this is formated with KERN_DEBUG, then the
+ * driver name followed by a ": " and then the message is output. 
+ * This also checks that the specified debug level is enabled before
+ * outputing the message
+ */
+#define dprintkdbg(type, format, arg...) \
+	do { \
+		if ((type) & (DEBUG_MASK)) \
+			dprintkl(KERN_DEBUG , format , ## arg); \
+	} while (0)
+
+/*
+ * Check if the specified type of debugging is enabled
+ */
+#define debug_enabled(type)	((DEBUG_MASK) & (type))
+
+#else
+/*
+ * No debugging. Do nothing
+ */
+#define dprintkdbg(type, format, arg...) \
+	do {} while (0)
+#define debug_enabled(type)	(0)
+
+#endif
+
+
+#ifndef PCI_VENDOR_ID_TEKRAM
+#define PCI_VENDOR_ID_TEKRAM                    0x1DE1	/* Vendor ID    */
+#endif
+#ifndef PCI_DEVICE_ID_TEKRAM_TRMS1040
+#define PCI_DEVICE_ID_TEKRAM_TRMS1040           0x0391	/* Device ID    */
+#endif
+
+
+#define DC395x_LOCK_IO(dev,flags)		spin_lock_irqsave(((struct Scsi_Host *)dev)->host_lock, flags)
+#define DC395x_UNLOCK_IO(dev,flags)		spin_unlock_irqrestore(((struct Scsi_Host *)dev)->host_lock, flags)
+
+#define DC395x_read8(acb,address)		(u8)(inb(acb->io_port_base + (address)))
+#define DC395x_read16(acb,address)		(u16)(inw(acb->io_port_base + (address)))
+#define DC395x_read32(acb,address)		(u32)(inl(acb->io_port_base + (address)))
+#define DC395x_write8(acb,address,value)	outb((value), acb->io_port_base + (address))
+#define DC395x_write16(acb,address,value)	outw((value), acb->io_port_base + (address))
+#define DC395x_write32(acb,address,value)	outl((value), acb->io_port_base + (address))
+
+/* cmd->result */
+#define RES_TARGET		0x000000FF	/* Target State */
+#define RES_TARGET_LNX  STATUS_MASK	/* Only official ... */
+#define RES_ENDMSG		0x0000FF00	/* End Message */
+#define RES_DID			0x00FF0000	/* DID_ codes */
+#define RES_DRV			0xFF000000	/* DRIVER_ codes */
+
+#define MK_RES(drv,did,msg,tgt) ((int)(drv)<<24 | (int)(did)<<16 | (int)(msg)<<8 | (int)(tgt))
+#define MK_RES_LNX(drv,did,msg,tgt) ((int)(drv)<<24 | (int)(did)<<16 | (int)(msg)<<8 | (int)(tgt)<<1)
+
+#define SET_RES_TARGET(who,tgt) { who &= ~RES_TARGET; who |= (int)(tgt); }
+#define SET_RES_TARGET_LNX(who,tgt) { who &= ~RES_TARGET_LNX; who |= (int)(tgt) << 1; }
+#define SET_RES_MSG(who,msg) { who &= ~RES_ENDMSG; who |= (int)(msg) << 8; }
+#define SET_RES_DID(who,did) { who &= ~RES_DID; who |= (int)(did) << 16; }
+#define SET_RES_DRV(who,drv) { who &= ~RES_DRV; who |= (int)(drv) << 24; }
+
+#define TAG_NONE 255
+
+/*
+ * srb->segement_x is the hw sg list. It is always allocated as a
+ * DC395x_MAX_SG_LISTENTRY entries in a linear block which does not
+ * cross a page boundy.
+ */
+#define SEGMENTX_LEN	(sizeof(struct SGentry)*DC395x_MAX_SG_LISTENTRY)
+#define VIRTX_LEN	(sizeof(void *) * DC395x_MAX_SG_LISTENTRY)
+
+struct SGentry {
+	u32 address;		/* bus! address */
+	u32 length;
+};
+
+/* The SEEPROM structure for TRM_S1040 */
+struct NVRamTarget {
+	u8 cfg0;		/* Target configuration byte 0  */
+	u8 period;		/* Target period                */
+	u8 cfg2;		/* Target configuration byte 2  */
+	u8 cfg3;		/* Target configuration byte 3  */
+};
+
+struct NvRamType {
+	u8 sub_vendor_id[2];	/* 0,1  Sub Vendor ID   */
+	u8 sub_sys_id[2];	/* 2,3  Sub System ID   */
+	u8 sub_class;		/* 4    Sub Class       */
+	u8 vendor_id[2];	/* 5,6  Vendor ID       */
+	u8 device_id[2];	/* 7,8  Device ID       */
+	u8 reserved;		/* 9    Reserved        */
+	struct NVRamTarget target[DC395x_MAX_SCSI_ID];
+						/** 10,11,12,13
+						 ** 14,15,16,17
+						 ** ....
+						 ** ....
+						 ** 70,71,72,73
+						 */
+	u8 scsi_id;		/* 74 Host Adapter SCSI ID      */
+	u8 channel_cfg;		/* 75 Channel configuration     */
+	u8 delay_time;		/* 76 Power on delay time       */
+	u8 max_tag;		/* 77 Maximum tags              */
+	u8 reserved0;		/* 78  */
+	u8 boot_target;		/* 79  */
+	u8 boot_lun;		/* 80  */
+	u8 reserved1;		/* 81  */
+	u16 reserved2[22];	/* 82,..125 */
+	u16 cksum;		/* 126,127 */
+};
+
+struct ScsiReqBlk {
+	struct list_head list;		/* next/prev ptrs for srb lists */
+	struct DeviceCtlBlk *dcb;
+	struct scsi_cmnd *cmd;
+
+	struct SGentry *segment_x;	/* Linear array of hw sg entries (up to 64 entries) */
+	u32 sg_bus_addr;	        /* Bus address of sg list (ie, of segment_x) */
+
+	u8 sg_count;			/* No of HW sg entries for this request */
+	u8 sg_index;			/* Index of HW sg entry for this request */
+	u32 total_xfer_length;		/* Total number of bytes remaining to be transfered */
+	void **virt_map;
+	unsigned char *virt_addr;	/* Virtual address of current transfer position */
+
+	/*
+	 * The sense buffer handling function, request_sense, uses
+	 * the first hw sg entry (segment_x[0]) and the transfer
+	 * length (total_xfer_length). While doing this it stores the
+	 * original values into the last sg hw list
+	 * (srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1] and the
+	 * total_xfer_length in xferred. These values are restored in
+	 * pci_unmap_srb_sense. This is the only place xferred is used.
+	 */
+	u32 xferred;		        /* Saved copy of total_xfer_length */
+
+	u16 state;
+
+	u8 msgin_buf[6];
+	u8 msgout_buf[6];
+
+	u8 adapter_status;
+	u8 target_status;
+	u8 msg_count;
+	u8 end_message;
+
+	u8 tag_number;
+	u8 status;
+	u8 retry_count;
+	u8 flag;
+
+	u8 scsi_phase;
+};
+
+struct DeviceCtlBlk {
+	struct list_head list;		/* next/prev ptrs for the dcb list */
+	struct AdapterCtlBlk *acb;
+	struct list_head srb_going_list;	/* head of going srb list */
+	struct list_head srb_waiting_list;	/* head of waiting srb list */
+
+	struct ScsiReqBlk *active_srb;
+	u32 tag_mask;
+
+	u16 max_command;
+
+	u8 target_id;		/* SCSI Target ID  (SCSI Only) */
+	u8 target_lun;		/* SCSI Log.  Unit (SCSI Only) */
+	u8 identify_msg;
+	u8 dev_mode;
+
+	u8 inquiry7;		/* To store Inquiry flags */
+	u8 sync_mode;		/* 0:async mode */
+	u8 min_nego_period;	/* for nego. */
+	u8 sync_period;		/* for reg.  */
+
+	u8 sync_offset;		/* for reg. and nego.(low nibble) */
+	u8 flag;
+	u8 dev_type;
+	u8 init_tcq_flag;
+};
+
+struct AdapterCtlBlk {
+	struct Scsi_Host *scsi_host;
+
+	unsigned long io_port_base;
+	unsigned long io_port_len;
+
+	struct list_head dcb_list;		/* head of going dcb list */
+	struct DeviceCtlBlk *dcb_run_robin;
+	struct DeviceCtlBlk *active_dcb;
+
+	struct list_head srb_free_list;		/* head of free srb list */
+	struct ScsiReqBlk *tmp_srb;
+	struct timer_list waiting_timer;
+	struct timer_list selto_timer;
+
+	u16 srb_count;
+
+	u8 sel_timeout;
+
+	unsigned int irq_level;
+	u8 tag_max_num;
+	u8 acb_flag;
+	u8 gmode2;
+
+	u8 config;
+	u8 lun_chk;
+	u8 scan_devices;
+	u8 hostid_bit;
+
+	u8 dcb_map[DC395x_MAX_SCSI_ID];
+	struct DeviceCtlBlk *children[DC395x_MAX_SCSI_ID][32];
+
+	struct pci_dev *dev;
+
+	u8 msg_len;
+
+	struct ScsiReqBlk srb_array[DC395x_MAX_SRB_CNT];
+	struct ScsiReqBlk srb;
+
+	struct NvRamType eeprom;	/* eeprom settings for this adapter */
+};
+
+
+/*---------------------------------------------------------------------------
+                            Forward declarations
+ ---------------------------------------------------------------------------*/
+static void data_out_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void command_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void status_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void msgout_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void msgin_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void data_out_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void data_in_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void command_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void status_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void msgout_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void msgin_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void nop0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status);
+static void nop1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, 
+		u16 *pscsi_status);
+static void set_basic_config(struct AdapterCtlBlk *acb);
+static void cleanup_after_transfer(struct AdapterCtlBlk *acb,
+		struct ScsiReqBlk *srb);
+static void reset_scsi_bus(struct AdapterCtlBlk *acb);
+static void data_io_transfer(struct AdapterCtlBlk *acb,
+		struct ScsiReqBlk *srb, u16 io_dir);
+static void disconnect(struct AdapterCtlBlk *acb);
+static void reselect(struct AdapterCtlBlk *acb);
+static u8 start_scsi(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb);
+static inline void enable_msgout_abort(struct AdapterCtlBlk *acb,
+		struct ScsiReqBlk *srb);
+static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb);
+static void doing_srb_done(struct AdapterCtlBlk *acb, u8 did_code,
+		struct scsi_cmnd *cmd, u8 force);
+static void scsi_reset_detect(struct AdapterCtlBlk *acb);
+static void pci_unmap_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb);
+static void pci_unmap_srb_sense(struct AdapterCtlBlk *acb,
+		struct ScsiReqBlk *srb);
+static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb);
+static void request_sense(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb);
+static void set_xfer_rate(struct AdapterCtlBlk *acb,
+		struct DeviceCtlBlk *dcb);
+static void waiting_timeout(unsigned long ptr);
+
+
+/*---------------------------------------------------------------------------
+                                 Static Data
+ ---------------------------------------------------------------------------*/
+static u16 current_sync_offset = 0;
+
+static void *dc395x_scsi_phase0[] = {
+	data_out_phase0,/* phase:0 */
+	data_in_phase0,	/* phase:1 */
+	command_phase0,	/* phase:2 */
+	status_phase0,	/* phase:3 */
+	nop0,		/* phase:4 PH_BUS_FREE .. initial phase */
+	nop0,		/* phase:5 PH_BUS_FREE .. initial phase */
+	msgout_phase0,	/* phase:6 */
+	msgin_phase0,	/* phase:7 */
+};
+
+static void *dc395x_scsi_phase1[] = {
+	data_out_phase1,/* phase:0 */
+	data_in_phase1,	/* phase:1 */
+	command_phase1,	/* phase:2 */
+	status_phase1,	/* phase:3 */
+	nop1,		/* phase:4 PH_BUS_FREE .. initial phase */
+	nop1,		/* phase:5 PH_BUS_FREE .. initial phase */
+	msgout_phase1,	/* phase:6 */
+	msgin_phase1,	/* phase:7 */
+};
+
+/*
+ *Fast20:	000	 50ns, 20.0 MHz
+ *		001	 75ns, 13.3 MHz
+ *		010	100ns, 10.0 MHz
+ *		011	125ns,  8.0 MHz
+ *		100	150ns,  6.6 MHz
+ *		101	175ns,  5.7 MHz
+ *		110	200ns,  5.0 MHz
+ *		111	250ns,  4.0 MHz
+ *
+ *Fast40(LVDS):	000	 25ns, 40.0 MHz
+ *		001	 50ns, 20.0 MHz
+ *		010	 75ns, 13.3 MHz
+ *		011	100ns, 10.0 MHz
+ *		100	125ns,  8.0 MHz
+ *		101	150ns,  6.6 MHz
+ *		110	175ns,  5.7 MHz
+ *		111	200ns,  5.0 MHz
+ */
+/*static u8	clock_period[] = {12,19,25,31,37,44,50,62};*/
+
+/* real period:48ns,76ns,100ns,124ns,148ns,176ns,200ns,248ns */
+static u8 clock_period[] = { 12, 18, 25, 31, 37, 43, 50, 62 };
+static u16 clock_speed[] = { 200, 133, 100, 80, 67, 58, 50, 40 };
+
+
+/*---------------------------------------------------------------------------
+                                Configuration
+  ---------------------------------------------------------------------------*/
+/*
+ * Module/boot parameters currently effect *all* instances of the
+ * card in the system.
+ */
+
+/*
+ * Command line parameters are stored in a structure below.
+ * These are the index's into the structure for the various
+ * command line options.
+ */
+#define CFG_ADAPTER_ID		0
+#define CFG_MAX_SPEED		1
+#define CFG_DEV_MODE		2
+#define CFG_ADAPTER_MODE	3
+#define CFG_TAGS		4
+#define CFG_RESET_DELAY		5
+
+#define CFG_NUM			6	/* number of configuration items */
+
+
+/*
+ * Value used to indicate that a command line override
+ * hasn't been used to modify the value.
+ */
+#define CFG_PARAM_UNSET -1
+
+
+/*
+ * Hold command line parameters.
+ */
+struct ParameterData {
+	int value;		/* value of this setting */
+	int min;		/* minimum value */
+	int max;		/* maximum value */
+	int def;		/* default value */
+	int safe;		/* safe value */
+};
+static struct ParameterData __devinitdata cfg_data[] = {
+	{ /* adapter id */
+		CFG_PARAM_UNSET,
+		0,
+		15,
+		7,
+		7
+	},
+	{ /* max speed */
+		CFG_PARAM_UNSET,
+		  0,
+		  7,
+		  1,	/* 13.3Mhz */
+		  4,	/*  6.7Hmz */
+	},
+	{ /* dev mode */
+		CFG_PARAM_UNSET,
+		0,
+		0x3f,
+		NTC_DO_PARITY_CHK | NTC_DO_DISCONNECT | NTC_DO_SYNC_NEGO |
+			NTC_DO_WIDE_NEGO | NTC_DO_TAG_QUEUEING |
+			NTC_DO_SEND_START,
+		NTC_DO_PARITY_CHK | NTC_DO_SEND_START
+	},
+	{ /* adapter mode */
+		CFG_PARAM_UNSET,
+		0,
+		0x2f,
+#ifdef CONFIG_SCSI_MULTI_LUN
+			NAC_SCANLUN |
+#endif
+		NAC_GT2DRIVES | NAC_GREATER_1G | NAC_POWERON_SCSI_RESET
+			/*| NAC_ACTIVE_NEG*/,
+		NAC_GT2DRIVES | NAC_GREATER_1G | NAC_POWERON_SCSI_RESET | 0x08
+	},
+	{ /* tags */
+		CFG_PARAM_UNSET,
+		0,
+		5,
+		3,	/* 16 tags (??) */
+		2,
+	},
+	{ /* reset delay */
+		CFG_PARAM_UNSET,
+		0,
+		180,
+		1,	/* 1 second */
+		10,	/* 10 seconds */
+	}
+};
+
+
+/*
+ * Safe settings. If set to zero the the BIOS/default values with
+ * command line overrides will be used. If set to 1 then safe and
+ * slow settings will be used.
+ */
+static int use_safe_settings = 0;
+module_param_named(safe, use_safe_settings, bool, 0);
+MODULE_PARM_DESC(safe, "Use safe and slow settings only. Default: false");
+
+
+module_param_named(adapter_id, cfg_data[CFG_ADAPTER_ID].value, int, 0);
+MODULE_PARM_DESC(adapter_id, "Adapter SCSI ID. Default 7 (0-15)");
+
+module_param_named(max_speed, cfg_data[CFG_MAX_SPEED].value, int, 0);
+MODULE_PARM_DESC(max_speed, "Maximum bus speed. Default 1 (0-7) Speeds: 0=20, 1=13.3, 2=10, 3=8, 4=6.7, 5=5.8, 6=5, 7=4 Mhz");
+
+module_param_named(dev_mode, cfg_data[CFG_DEV_MODE].value, int, 0);
+MODULE_PARM_DESC(dev_mode, "Device mode.");
+
+module_param_named(adapter_mode, cfg_data[CFG_ADAPTER_MODE].value, int, 0);
+MODULE_PARM_DESC(adapter_mode, "Adapter mode.");
+
+module_param_named(tags, cfg_data[CFG_TAGS].value, int, 0);
+MODULE_PARM_DESC(tags, "Number of tags (1<<x). Default 3 (0-5)");
+
+module_param_named(reset_delay, cfg_data[CFG_RESET_DELAY].value, int, 0);
+MODULE_PARM_DESC(reset_delay, "Reset delay in seconds. Default 1 (0-180)");
+
+
+/**
+ * set_safe_settings - if the use_safe_settings option is set then
+ * set all values to the safe and slow values.
+ **/
+static void __devinit set_safe_settings(void)
+{
+	if (use_safe_settings)
+	{
+		int i;
+
+		dprintkl(KERN_INFO, "Using safe settings.\n");
+		for (i = 0; i < CFG_NUM; i++)
+		{
+			cfg_data[i].value = cfg_data[i].safe;
+		}
+	}
+}
+
+
+/**
+ * fix_settings - reset any boot parameters which are out of range
+ * back to the default values.
+ **/
+static void __devinit fix_settings(void)
+{
+	int i;
+
+	dprintkdbg(DBG_1,
+		"setup: AdapterId=%08x MaxSpeed=%08x DevMode=%08x "
+		"AdapterMode=%08x Tags=%08x ResetDelay=%08x\n",
+		cfg_data[CFG_ADAPTER_ID].value,
+		cfg_data[CFG_MAX_SPEED].value,
+		cfg_data[CFG_DEV_MODE].value,
+		cfg_data[CFG_ADAPTER_MODE].value,
+		cfg_data[CFG_TAGS].value,
+		cfg_data[CFG_RESET_DELAY].value);
+	for (i = 0; i < CFG_NUM; i++)
+	{
+		if (cfg_data[i].value < cfg_data[i].min
+		    || cfg_data[i].value > cfg_data[i].max)
+			cfg_data[i].value = cfg_data[i].def;
+	}
+}
+
+
+
+/*
+ * Mapping from the eeprom delay index value (index into this array)
+ * to the the number of actual seconds that the delay should be for.
+ */
+static char __devinitdata eeprom_index_to_delay_map[] = 
+	{ 1, 3, 5, 10, 16, 30, 60, 120 };
+
+
+/**
+ * eeprom_index_to_delay - Take the eeprom delay setting and convert it
+ * into a number of seconds.
+ *
+ * @eeprom: The eeprom structure in which we find the delay index to map.
+ **/
+static void __devinit eeprom_index_to_delay(struct NvRamType *eeprom)
+{
+	eeprom->delay_time = eeprom_index_to_delay_map[eeprom->delay_time];
+}
+
+
+/**
+ * delay_to_eeprom_index - Take a delay in seconds and return the
+ * closest eeprom index which will delay for at least that amount of
+ * seconds.
+ *
+ * @delay: The delay, in seconds, to find the eeprom index for.
+ **/
+static int __devinit delay_to_eeprom_index(int delay)
+{
+	u8 idx = 0;
+	while (idx < 7 && eeprom_index_to_delay_map[idx] < delay)
+		idx++;
+	return idx;
+}
+
+
+/**
+ * eeprom_override - Override the eeprom settings, in the provided
+ * eeprom structure, with values that have been set on the command
+ * line.
+ *
+ * @eeprom: The eeprom data to override with command line options.
+ **/
+static void __devinit eeprom_override(struct NvRamType *eeprom)
+{
+	u8 id;
+
+	/* Adapter Settings */
+	if (cfg_data[CFG_ADAPTER_ID].value != CFG_PARAM_UNSET)
+		eeprom->scsi_id = (u8)cfg_data[CFG_ADAPTER_ID].value;
+
+	if (cfg_data[CFG_ADAPTER_MODE].value != CFG_PARAM_UNSET)
+		eeprom->channel_cfg = (u8)cfg_data[CFG_ADAPTER_MODE].value;
+
+	if (cfg_data[CFG_RESET_DELAY].value != CFG_PARAM_UNSET)
+		eeprom->delay_time = delay_to_eeprom_index(
+					cfg_data[CFG_RESET_DELAY].value);
+
+	if (cfg_data[CFG_TAGS].value != CFG_PARAM_UNSET)
+		eeprom->max_tag = (u8)cfg_data[CFG_TAGS].value;
+
+	/* Device Settings */
+	for (id = 0; id < DC395x_MAX_SCSI_ID; id++) {
+		if (cfg_data[CFG_DEV_MODE].value != CFG_PARAM_UNSET)
+			eeprom->target[id].cfg0 =
+				(u8)cfg_data[CFG_DEV_MODE].value;
+
+		if (cfg_data[CFG_MAX_SPEED].value != CFG_PARAM_UNSET)
+			eeprom->target[id].period =
+				(u8)cfg_data[CFG_MAX_SPEED].value;
+
+	}
+}
+
+
+/*---------------------------------------------------------------------------
+ ---------------------------------------------------------------------------*/
+
+static unsigned int list_size(struct list_head *head)
+{
+	unsigned int count = 0;
+	struct list_head *pos;
+	list_for_each(pos, head)
+		count++;
+	return count;
+}
+
+
+static struct DeviceCtlBlk *dcb_get_next(struct list_head *head,
+		struct DeviceCtlBlk *pos)
+{
+	int use_next = 0;
+	struct DeviceCtlBlk* next = NULL;
+	struct DeviceCtlBlk* i;
+
+	if (list_empty(head))
+		return NULL;
+
+	/* find supplied dcb and then select the next one */
+	list_for_each_entry(i, head, list)
+		if (use_next) {
+			next = i;
+			break;
+		} else if (i == pos) {
+			use_next = 1;
+		}
+	/* if no next one take the head one (ie, wraparound) */
+	if (!next)
+        	list_for_each_entry(i, head, list) {
+        		next = i;
+        		break;
+        	}
+
+	return next;
+}
+
+
+static void free_tag(struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb)
+{
+	if (srb->tag_number < 255) {
+		dcb->tag_mask &= ~(1 << srb->tag_number);	/* free tag mask */
+		srb->tag_number = 255;
+	}
+}
+
+
+/* Find cmd in SRB list */
+inline static struct ScsiReqBlk *find_cmd(struct scsi_cmnd *cmd, 
+		struct list_head *head)
+{
+	struct ScsiReqBlk *i;
+	list_for_each_entry(i, head, list)
+		if (i->cmd == cmd)
+			return i;
+	return NULL;
+}
+
+
+static struct ScsiReqBlk *srb_get_free(struct AdapterCtlBlk *acb)
+{
+	struct list_head *head = &acb->srb_free_list;
+	struct ScsiReqBlk *srb = NULL;
+
+	if (!list_empty(head)) {
+		srb = list_entry(head->next, struct ScsiReqBlk, list);
+		list_del(head->next);
+		dprintkdbg(DBG_0, "srb_get_free: srb=%p\n", srb);
+	}
+	return srb;
+}
+
+
+static void srb_free_insert(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+	dprintkdbg(DBG_0, "srb_free_insert: srb=%p\n", srb);
+	list_add_tail(&srb->list, &acb->srb_free_list);
+}
+
+
+static void srb_waiting_insert(struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb)
+{
+	dprintkdbg(DBG_0, "srb_waiting_insert: (pid#%li) <%02i-%i> srb=%p\n",
+		srb->cmd->pid, dcb->target_id, dcb->target_lun, srb);
+	list_add(&srb->list, &dcb->srb_waiting_list);
+}
+
+
+static void srb_waiting_append(struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb)
+{
+	dprintkdbg(DBG_0, "srb_waiting_append: (pid#%li) <%02i-%i> srb=%p\n",
+		 srb->cmd->pid, dcb->target_id, dcb->target_lun, srb);
+	list_add_tail(&srb->list, &dcb->srb_waiting_list);
+}
+
+
+static void srb_going_append(struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb)
+{
+	dprintkdbg(DBG_0, "srb_going_append: (pid#%li) <%02i-%i> srb=%p\n",
+		srb->cmd->pid, dcb->target_id, dcb->target_lun, srb);
+	list_add_tail(&srb->list, &dcb->srb_going_list);
+}
+
+
+static void srb_going_remove(struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb)
+{
+	struct ScsiReqBlk *i;
+	struct ScsiReqBlk *tmp;
+	dprintkdbg(DBG_0, "srb_going_remove: (pid#%li) <%02i-%i> srb=%p\n",
+		srb->cmd->pid, dcb->target_id, dcb->target_lun, srb);
+
+	list_for_each_entry_safe(i, tmp, &dcb->srb_going_list, list)
+		if (i == srb) {
+			list_del(&srb->list);
+			break;
+		}
+}
+
+
+static void srb_waiting_remove(struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb)
+{
+	struct ScsiReqBlk *i;
+	struct ScsiReqBlk *tmp;
+	dprintkdbg(DBG_0, "srb_waiting_remove: (pid#%li) <%02i-%i> srb=%p\n",
+		srb->cmd->pid, dcb->target_id, dcb->target_lun, srb);
+
+	list_for_each_entry_safe(i, tmp, &dcb->srb_waiting_list, list)
+		if (i == srb) {
+			list_del(&srb->list);
+			break;
+		}
+}
+
+
+static void srb_going_to_waiting_move(struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb)
+{
+	dprintkdbg(DBG_0,
+		"srb_going_to_waiting_move: (pid#%li) <%02i-%i> srb=%p\n",
+		srb->cmd->pid, dcb->target_id, dcb->target_lun, srb);
+	list_move(&srb->list, &dcb->srb_waiting_list);
+}
+
+
+static void srb_waiting_to_going_move(struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb)
+{
+	dprintkdbg(DBG_0,
+		"srb_waiting_to_going_move: (pid#%li) <%02i-%i> srb=%p\n",
+		srb->cmd->pid, dcb->target_id, dcb->target_lun, srb);
+	list_move(&srb->list, &dcb->srb_going_list);
+}
+
+
+/* Sets the timer to wake us up */
+static void waiting_set_timer(struct AdapterCtlBlk *acb, unsigned long to)
+{
+	if (timer_pending(&acb->waiting_timer))
+		return;
+	init_timer(&acb->waiting_timer);
+	acb->waiting_timer.function = waiting_timeout;
+	acb->waiting_timer.data = (unsigned long) acb;
+	if (time_before(jiffies + to, acb->scsi_host->last_reset - HZ / 2))
+		acb->waiting_timer.expires =
+		    acb->scsi_host->last_reset - HZ / 2 + 1;
+	else
+		acb->waiting_timer.expires = jiffies + to + 1;
+	add_timer(&acb->waiting_timer);
+}
+
+
+/* Send the next command from the waiting list to the bus */
+static void waiting_process_next(struct AdapterCtlBlk *acb)
+{
+	struct DeviceCtlBlk *start = NULL;
+	struct DeviceCtlBlk *pos;
+	struct DeviceCtlBlk *dcb;
+	struct ScsiReqBlk *srb;
+	struct list_head *dcb_list_head = &acb->dcb_list;
+
+	if (acb->active_dcb
+	    || (acb->acb_flag & (RESET_DETECT + RESET_DONE + RESET_DEV)))
+		return;
+
+	if (timer_pending(&acb->waiting_timer))
+		del_timer(&acb->waiting_timer);
+
+	if (list_empty(dcb_list_head))
+		return;
+
+	/*
+	 * Find the starting dcb. Need to find it again in the list
+	 * since the list may have changed since we set the ptr to it
+	 */
+	list_for_each_entry(dcb, dcb_list_head, list)
+		if (dcb == acb->dcb_run_robin) {
+			start = dcb;
+			break;
+		}
+	if (!start) {
+		/* This can happen! */
+		start = list_entry(dcb_list_head->next, typeof(*start), list);
+		acb->dcb_run_robin = start;
+	}
+
+
+	/*
+	 * Loop over the dcb, but we start somewhere (potentially) in
+	 * the middle of the loop so we need to manully do this.
+	 */
+	pos = start;
+	do {
+		struct list_head *waiting_list_head = &pos->srb_waiting_list;
+
+		/* Make sure, the next another device gets scheduled ... */
+		acb->dcb_run_robin = dcb_get_next(dcb_list_head,
+						  acb->dcb_run_robin);
+
+		if (list_empty(waiting_list_head) ||
+		    pos->max_command <= list_size(&pos->srb_going_list)) {
+			/* move to next dcb */
+			pos = dcb_get_next(dcb_list_head, pos);
+		} else {
+			srb = list_entry(waiting_list_head->next,
+					 struct ScsiReqBlk, list);
+
+			/* Try to send to the bus */
+			if (!start_scsi(acb, pos, srb))
+				srb_waiting_to_going_move(pos, srb);
+			else
+				waiting_set_timer(acb, HZ/50);
+			break;
+		}
+	} while (pos != start);
+}
+
+
+/* Wake up waiting queue */
+static void waiting_timeout(unsigned long ptr)
+{
+	unsigned long flags;
+	struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)ptr;
+	dprintkdbg(DBG_1,
+		"waiting_timeout: Queue woken up by timer. acb=%p\n", acb);
+	DC395x_LOCK_IO(acb->scsi_host, flags);
+	waiting_process_next(acb);
+	DC395x_UNLOCK_IO(acb->scsi_host, flags);
+}
+
+
+/* Get the DCB for a given ID/LUN combination */
+static struct DeviceCtlBlk *find_dcb(struct AdapterCtlBlk *acb, u8 id, u8 lun)
+{
+	return acb->children[id][lun];
+}
+
+
+/* Send SCSI Request Block (srb) to adapter (acb) */
+static void send_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+	struct DeviceCtlBlk *dcb = srb->dcb;
+
+	if (dcb->max_command <= list_size(&dcb->srb_going_list) ||
+	    acb->active_dcb ||
+	    (acb->acb_flag & (RESET_DETECT + RESET_DONE + RESET_DEV))) {
+		srb_waiting_append(dcb, srb);
+		waiting_process_next(acb);
+		return;
+	}
+
+	if (!start_scsi(acb, dcb, srb))
+		srb_going_append(dcb, srb);
+	else {
+		srb_waiting_insert(dcb, srb);
+		waiting_set_timer(acb, HZ / 50);
+	}
+}
+
+
+/* Prepare SRB for being sent to Device DCB w/ command *cmd */
+static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb)
+{
+	enum dma_data_direction dir = cmd->sc_data_direction;
+	dprintkdbg(DBG_0, "build_srb: (pid#%li) <%02i-%i>\n",
+		cmd->pid, dcb->target_id, dcb->target_lun);
+
+	srb->dcb = dcb;
+	srb->cmd = cmd;
+	srb->sg_count = 0;
+	srb->total_xfer_length = 0;
+	srb->sg_bus_addr = 0;
+	srb->virt_addr = NULL;
+	srb->sg_index = 0;
+	srb->adapter_status = 0;
+	srb->target_status = 0;
+	srb->msg_count = 0;
+	srb->status = 0;
+	srb->flag = 0;
+	srb->state = 0;
+	srb->retry_count = 0;
+	srb->tag_number = TAG_NONE;
+	srb->scsi_phase = PH_BUS_FREE;	/* initial phase */
+	srb->end_message = 0;
+
+	if (dir == PCI_DMA_NONE || !cmd->request_buffer) {
+		dprintkdbg(DBG_0,
+			"build_srb: [0] len=%d buf=%p use_sg=%d !MAP=%08x\n",
+			cmd->bufflen, cmd->request_buffer,
+			cmd->use_sg, srb->segment_x[0].address);
+	} else if (cmd->use_sg) {
+		int i;
+		u32 reqlen = cmd->request_bufflen;
+		struct scatterlist *sl = (struct scatterlist *)
+					 cmd->request_buffer;
+		struct SGentry *sgp = srb->segment_x;
+		srb->sg_count = pci_map_sg(dcb->acb->dev, sl, cmd->use_sg,
+					   dir);
+		dprintkdbg(DBG_0,
+			"build_srb: [n] len=%d buf=%p use_sg=%d segs=%d\n",
+			reqlen, cmd->request_buffer, cmd->use_sg,
+			srb->sg_count);
+
+		for (i = 0; i < srb->sg_count; i++) {
+			u32 seglen = (u32)sg_dma_len(sl + i);
+			sgp[i].address = (u32)sg_dma_address(sl + i);
+			sgp[i].length = seglen;
+			srb->total_xfer_length += seglen;
+			srb->virt_map[i] = kmap(sl[i].page);
+		}
+		srb->virt_addr = srb->virt_map[0];
+		sgp += srb->sg_count - 1;
+
+		/*
+		 * adjust last page if too big as it is allocated
+		 * on even page boundaries
+		 */
+		if (srb->total_xfer_length > reqlen) {
+			sgp->length -= (srb->total_xfer_length - reqlen);
+			srb->total_xfer_length = reqlen;
+		}
+
+		/* Fixup for WIDE padding - make sure length is even */
+		if (dcb->sync_period & WIDE_SYNC &&
+		    srb->total_xfer_length % 2) {
+			srb->total_xfer_length++;
+			sgp->length++;
+		}
+
+		srb->sg_bus_addr = pci_map_single(dcb->acb->dev,
+						srb->segment_x,
+				            	SEGMENTX_LEN,
+				            	PCI_DMA_TODEVICE);
+
+		dprintkdbg(DBG_SG, "build_srb: [n] map sg %p->%08x(%05x)\n",
+			srb->segment_x, srb->sg_bus_addr, SEGMENTX_LEN);
+	} else {
+		srb->total_xfer_length = cmd->request_bufflen;
+		srb->sg_count = 1;
+		srb->segment_x[0].address =
+			pci_map_single(dcb->acb->dev, cmd->request_buffer,
+				       srb->total_xfer_length, dir);
+
+		/* Fixup for WIDE padding - make sure length is even */
+		if (dcb->sync_period & WIDE_SYNC && srb->total_xfer_length % 2)
+			srb->total_xfer_length++;
+
+		srb->segment_x[0].length = srb->total_xfer_length;
+		srb->virt_addr = cmd->request_buffer;
+		dprintkdbg(DBG_0,
+			"build_srb: [1] len=%d buf=%p use_sg=%d map=%08x\n",
+			srb->total_xfer_length, cmd->request_buffer,
+			cmd->use_sg, srb->segment_x[0].address);
+	}
+}
+
+
+/**
+ * dc395x_queue_command - queue scsi command passed from the mid
+ * layer, invoke 'done' on completion
+ *
+ * @cmd: pointer to scsi command object
+ * @done: function pointer to be invoked on completion
+ *
+ * Returns 1 if the adapter (host) is busy, else returns 0. One
+ * reason for an adapter to be busy is that the number
+ * of outstanding queued commands is already equal to
+ * struct Scsi_Host::can_queue .
+ *
+ * Required: if struct Scsi_Host::can_queue is ever non-zero
+ *           then this function is required.
+ *
+ * Locks: struct Scsi_Host::host_lock held on entry (with "irqsave")
+ *        and is expected to be held on return.
+ *
+ **/
+static int dc395x_queue_command(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
+{
+	struct DeviceCtlBlk *dcb;
+	struct ScsiReqBlk *srb;
+	struct AdapterCtlBlk *acb =
+	    (struct AdapterCtlBlk *)cmd->device->host->hostdata;
+	dprintkdbg(DBG_0, "queue_command: (pid#%li) <%02i-%i> cmnd=0x%02x\n",
+		cmd->pid, cmd->device->id, cmd->device->lun, cmd->cmnd[0]);
+
+	/* Assume BAD_TARGET; will be cleared later */
+	cmd->result = DID_BAD_TARGET << 16;
+
+	/* ignore invalid targets */
+	if (cmd->device->id >= acb->scsi_host->max_id ||
+	    cmd->device->lun >= acb->scsi_host->max_lun ||
+	    cmd->device->lun >31) {
+		goto complete;
+	}
+
+	/* does the specified lun on the specified device exist */
+	if (!(acb->dcb_map[cmd->device->id] & (1 << cmd->device->lun))) {
+		dprintkl(KERN_INFO, "queue_command: Ignore target <%02i-%i>\n",
+			cmd->device->id, cmd->device->lun);
+		goto complete;
+	}
+
+	/* do we have a DCB for the device */
+	dcb = find_dcb(acb, cmd->device->id, cmd->device->lun);
+	if (!dcb) {
+		/* should never happen */
+		dprintkl(KERN_ERR, "queue_command: No such device <%02i-%i>",
+			cmd->device->id, cmd->device->lun);
+		goto complete;
+	}
+
+	/* set callback and clear result in the command */
+	cmd->scsi_done = done;
+	cmd->result = 0;
+
+	srb = srb_get_free(acb);
+	if (!srb)
+	{
+		/*
+		 * Return 1 since we are unable to queue this command at this
+		 * point in time.
+		 */
+		dprintkdbg(DBG_0, "queue_command: No free srb's\n");
+		return 1;
+	}
+
+	build_srb(cmd, dcb, srb);
+
+	if (!list_empty(&dcb->srb_waiting_list)) {
+		/* append to waiting queue */
+		srb_waiting_append(dcb, srb);
+		waiting_process_next(acb);
+	} else {
+		/* process immediately */
+		send_srb(acb, srb);
+	}
+	dprintkdbg(DBG_1, "queue_command: (pid#%li) done\n", cmd->pid);
+	return 0;
+
+complete:
+	/*
+	 * Complete the command immediatey, and then return 0 to
+	 * indicate that we have handled the command. This is usually
+	 * done when the commad is for things like non existent
+	 * devices.
+	 */
+	done(cmd);
+	return 0;
+}
+
+
+/*
+ * Return the disk geometry for the given SCSI device.
+ */
+static int dc395x_bios_param(struct scsi_device *sdev,
+		struct block_device *bdev, sector_t capacity, int *info)
+{
+#ifdef CONFIG_SCSI_DC395x_TRMS1040_TRADMAP
+	int heads, sectors, cylinders;
+	struct AdapterCtlBlk *acb;
+	int size = capacity;
+
+	dprintkdbg(DBG_0, "dc395x_bios_param..............\n");
+	acb = (struct AdapterCtlBlk *)sdev->host->hostdata;
+	heads = 64;
+	sectors = 32;
+	cylinders = size / (heads * sectors);
+
+	if ((acb->gmode2 & NAC_GREATER_1G) && (cylinders > 1024)) {
+		heads = 255;
+		sectors = 63;
+		cylinders = size / (heads * sectors);
+	}
+	geom[0] = heads;
+	geom[1] = sectors;
+	geom[2] = cylinders;
+	return 0;
+#else
+	return scsicam_bios_param(bdev, capacity, info);
+#endif
+}
+
+
+static void dump_register_info(struct AdapterCtlBlk *acb,
+		struct DeviceCtlBlk *dcb, struct ScsiReqBlk *srb)
+{
+	u16 pstat;
+	struct pci_dev *dev = acb->dev;
+	pci_read_config_word(dev, PCI_STATUS, &pstat);
+	if (!dcb)
+		dcb = acb->active_dcb;
+	if (!srb && dcb)
+		srb = dcb->active_srb;
+	if (srb) {
+		if (!srb->cmd)
+			dprintkl(KERN_INFO, "dump: srb=%p cmd=%p OOOPS!\n",
+				srb, srb->cmd);
+		else
+			dprintkl(KERN_INFO, "dump: srb=%p cmd=%p (pid#%li) "
+				 "cmnd=0x%02x <%02i-%i>\n",
+			    	srb, srb->cmd, srb->cmd->pid,
+				srb->cmd->cmnd[0], srb->cmd->device->id,
+			       	srb->cmd->device->lun);
+		printk("  sglist=%p cnt=%i idx=%i len=%i\n",
+		       srb->segment_x, srb->sg_count, srb->sg_index,
+		       srb->total_xfer_length);
+		printk("  state=0x%04x status=0x%02x phase=0x%02x (%sconn.)\n",
+		       srb->state, srb->status, srb->scsi_phase,
+		       (acb->active_dcb) ? "" : "not");
+	}
+	dprintkl(KERN_INFO, "dump: SCSI{status=0x%04x fifocnt=0x%02x "
+		"signals=0x%02x irqstat=0x%02x sync=0x%02x target=0x%02x "
+		"rselid=0x%02x ctr=0x%08x irqen=0x%02x config=0x%04x "
+		"config2=0x%02x cmd=0x%02x selto=0x%02x}\n",
+		DC395x_read16(acb, TRM_S1040_SCSI_STATUS),
+		DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
+		DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL),
+		DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS),
+		DC395x_read8(acb, TRM_S1040_SCSI_SYNC),
+		DC395x_read8(acb, TRM_S1040_SCSI_TARGETID),
+		DC395x_read8(acb, TRM_S1040_SCSI_IDMSG),
+		DC395x_read32(acb, TRM_S1040_SCSI_COUNTER),
+		DC395x_read8(acb, TRM_S1040_SCSI_INTEN),
+		DC395x_read16(acb, TRM_S1040_SCSI_CONFIG0),
+		DC395x_read8(acb, TRM_S1040_SCSI_CONFIG2),
+		DC395x_read8(acb, TRM_S1040_SCSI_COMMAND),
+		DC395x_read8(acb, TRM_S1040_SCSI_TIMEOUT));
+	dprintkl(KERN_INFO, "dump: DMA{cmd=0x%04x fifocnt=0x%02x fstat=0x%02x "
+		"irqstat=0x%02x irqen=0x%02x cfg=0x%04x tctr=0x%08x "
+		"ctctr=0x%08x addr=0x%08x:0x%08x}\n",
+		DC395x_read16(acb, TRM_S1040_DMA_COMMAND),
+		DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
+		DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
+		DC395x_read8(acb, TRM_S1040_DMA_STATUS),
+		DC395x_read8(acb, TRM_S1040_DMA_INTEN),
+		DC395x_read16(acb, TRM_S1040_DMA_CONFIG),
+		DC395x_read32(acb, TRM_S1040_DMA_XCNT),
+		DC395x_read32(acb, TRM_S1040_DMA_CXCNT),
+		DC395x_read32(acb, TRM_S1040_DMA_XHIGHADDR),
+		DC395x_read32(acb, TRM_S1040_DMA_XLOWADDR));
+	dprintkl(KERN_INFO, "dump: gen{gctrl=0x%02x gstat=0x%02x gtmr=0x%02x} "
+		"pci{status=0x%04x}\n",
+		DC395x_read8(acb, TRM_S1040_GEN_CONTROL),
+		DC395x_read8(acb, TRM_S1040_GEN_STATUS),
+		DC395x_read8(acb, TRM_S1040_GEN_TIMER),
+		pstat);
+}
+
+
+static inline void clear_fifo(struct AdapterCtlBlk *acb, char *txt)
+{
+#if debug_enabled(DBG_FIFO)
+	u8 lines = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL);
+	u8 fifocnt = DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT);
+	if (!(fifocnt & 0x40))
+		dprintkdbg(DBG_FIFO,
+			"clear_fifo: (%i bytes) on phase %02x in %s\n",
+			fifocnt & 0x3f, lines, txt);
+#endif
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_CLRFIFO);
+}
+
+
+static void reset_dev_param(struct AdapterCtlBlk *acb)
+{
+	struct DeviceCtlBlk *dcb;
+	struct NvRamType *eeprom = &acb->eeprom;
+	dprintkdbg(DBG_0, "reset_dev_param: acb=%p\n", acb);
+
+	list_for_each_entry(dcb, &acb->dcb_list, list) {
+		u8 period_index;
+
+		dcb->sync_mode &= ~(SYNC_NEGO_DONE + WIDE_NEGO_DONE);
+		dcb->sync_period = 0;
+		dcb->sync_offset = 0;
+
+		dcb->dev_mode = eeprom->target[dcb->target_id].cfg0;
+		period_index = eeprom->target[dcb->target_id].period & 0x07;
+		dcb->min_nego_period = clock_period[period_index];
+		if (!(dcb->dev_mode & NTC_DO_WIDE_NEGO)
+		    || !(acb->config & HCC_WIDE_CARD))
+			dcb->sync_mode &= ~WIDE_NEGO_ENABLE;
+	}
+}
+
+
+/*
+ * perform a hard reset on the SCSI bus
+ * @cmd - some command for this host (for fetching hooks)
+ * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003).
+ */
+static int dc395x_eh_bus_reset(struct scsi_cmnd *cmd)
+{
+	struct AdapterCtlBlk *acb =
+		(struct AdapterCtlBlk *)cmd->device->host->hostdata;
+	dprintkl(KERN_INFO,
+		"eh_bus_reset: (pid#%li) target=<%02i-%i> cmd=%p\n",
+		cmd->pid, cmd->device->id, cmd->device->lun, cmd);
+
+	if (timer_pending(&acb->waiting_timer))
+		del_timer(&acb->waiting_timer);
+
+	/*
+	 * disable interrupt    
+	 */
+	DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0x00);
+	DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x00);
+	DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE);
+	DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE);
+
+	reset_scsi_bus(acb);
+	udelay(500);
+
+	/* We may be in serious trouble. Wait some seconds */
+	acb->scsi_host->last_reset =
+	    jiffies + 3 * HZ / 2 +
+	    HZ * acb->eeprom.delay_time;
+
+	/*
+	 * re-enable interrupt      
+	 */
+	/* Clear SCSI FIFO          */
+	DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
+	clear_fifo(acb, "eh_bus_reset");
+	/* Delete pending IRQ */
+	DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
+	set_basic_config(acb);
+
+	reset_dev_param(acb);
+	doing_srb_done(acb, DID_RESET, cmd, 0);
+	acb->active_dcb = NULL;
+	acb->acb_flag = 0;	/* RESET_DETECT, RESET_DONE ,RESET_DEV */
+	waiting_process_next(acb);
+
+	return SUCCESS;
+}
+
+
+/*
+ * abort an errant SCSI command
+ * @cmd - command to be aborted
+ * Returns: SUCCESS (0x2002) on success, else FAILED (0x2003).
+ */
+static int dc395x_eh_abort(struct scsi_cmnd *cmd)
+{
+	/*
+	 * Look into our command queues: If it has not been sent already,
+	 * we remove it and return success. Otherwise fail.
+	 */
+	struct AdapterCtlBlk *acb =
+	    (struct AdapterCtlBlk *)cmd->device->host->hostdata;
+	struct DeviceCtlBlk *dcb;
+	struct ScsiReqBlk *srb;
+	dprintkl(KERN_INFO, "eh_abort: (pid#%li) target=<%02i-%i> cmd=%p\n",
+		cmd->pid, cmd->device->id, cmd->device->lun, cmd);
+
+	dcb = find_dcb(acb, cmd->device->id, cmd->device->lun);
+	if (!dcb) {
+		dprintkl(KERN_DEBUG, "eh_abort: No such device\n");
+		return FAILED;
+	}
+
+	srb = find_cmd(cmd, &dcb->srb_waiting_list);
+	if (srb) {
+		srb_waiting_remove(dcb, srb);
+		pci_unmap_srb_sense(acb, srb);
+		pci_unmap_srb(acb, srb);
+		free_tag(dcb, srb);
+		srb_free_insert(acb, srb);
+		dprintkl(KERN_DEBUG, "eh_abort: Command was waiting\n");
+		cmd->result = DID_ABORT << 16;
+		return SUCCESS;
+	}
+	srb = find_cmd(cmd, &dcb->srb_going_list);
+	if (srb) {
+		dprintkl(KERN_DEBUG, "eh_abort: Command in progress");
+		/* XXX: Should abort the command here */
+	} else {
+		dprintkl(KERN_DEBUG, "eh_abort: Command not found");
+	}
+	return FAILED;
+}
+
+
+/* SDTR */
+static void build_sdtr(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb)
+{
+	u8 *ptr = srb->msgout_buf + srb->msg_count;
+	if (srb->msg_count > 1) {
+		dprintkl(KERN_INFO,
+			"build_sdtr: msgout_buf BUSY (%i: %02x %02x)\n",
+			srb->msg_count, srb->msgout_buf[0],
+			srb->msgout_buf[1]);
+		return;
+	}
+	if (!(dcb->dev_mode & NTC_DO_SYNC_NEGO)) {
+		dcb->sync_offset = 0;
+		dcb->min_nego_period = 200 >> 2;
+	} else if (dcb->sync_offset == 0)
+		dcb->sync_offset = SYNC_NEGO_OFFSET;
+
+	*ptr++ = MSG_EXTENDED;	/* (01h) */
+	*ptr++ = 3;		/* length */
+	*ptr++ = EXTENDED_SDTR;	/* (01h) */
+	*ptr++ = dcb->min_nego_period;	/* Transfer period (in 4ns) */
+	*ptr++ = dcb->sync_offset;	/* Transfer period (max. REQ/ACK dist) */
+	srb->msg_count += 5;
+	srb->state |= SRB_DO_SYNC_NEGO;
+}
+
+
+/* WDTR */
+static void build_wdtr(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb)
+{
+	u8 wide = ((dcb->dev_mode & NTC_DO_WIDE_NEGO) &
+		   (acb->config & HCC_WIDE_CARD)) ? 1 : 0;
+	u8 *ptr = srb->msgout_buf + srb->msg_count;
+	if (srb->msg_count > 1) {
+		dprintkl(KERN_INFO,
+			"build_wdtr: msgout_buf BUSY (%i: %02x %02x)\n",
+			srb->msg_count, srb->msgout_buf[0],
+			srb->msgout_buf[1]);
+		return;
+	}
+	*ptr++ = MSG_EXTENDED;	/* (01h) */
+	*ptr++ = 2;		/* length */
+	*ptr++ = EXTENDED_WDTR;	/* (03h) */
+	*ptr++ = wide;
+	srb->msg_count += 4;
+	srb->state |= SRB_DO_WIDE_NEGO;
+}
+
+
+#if 0
+/* Timer to work around chip flaw: When selecting and the bus is 
+ * busy, we sometimes miss a Selection timeout IRQ */
+void selection_timeout_missed(unsigned long ptr);
+/* Sets the timer to wake us up */
+static void selto_timer(struct AdapterCtlBlk *acb)
+{
+	if (timer_pending(&acb->selto_timer))
+		return;
+	acb->selto_timer.function = selection_timeout_missed;
+	acb->selto_timer.data = (unsigned long) acb;
+	if (time_before
+	    (jiffies + HZ, acb->scsi_host->last_reset + HZ / 2))
+		acb->selto_timer.expires =
+		    acb->scsi_host->last_reset + HZ / 2 + 1;
+	else
+		acb->selto_timer.expires = jiffies + HZ + 1;
+	add_timer(&acb->selto_timer);
+}
+
+
+void selection_timeout_missed(unsigned long ptr)
+{
+	unsigned long flags;
+	struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)ptr;
+	struct ScsiReqBlk *srb;
+	dprintkl(KERN_DEBUG, "Chip forgot to produce SelTO IRQ!\n");
+	if (!acb->active_dcb || !acb->active_dcb->active_srb) {
+		dprintkl(KERN_DEBUG, "... but no cmd pending? Oops!\n");
+		return;
+	}
+	DC395x_LOCK_IO(acb->scsi_host, flags);
+	srb = acb->active_dcb->active_srb;
+	disconnect(acb);
+	DC395x_UNLOCK_IO(acb->scsi_host, flags);
+}
+#endif
+
+
+static u8 start_scsi(struct AdapterCtlBlk* acb, struct DeviceCtlBlk* dcb,
+		struct ScsiReqBlk* srb)
+{
+	u16 s_stat2, return_code;
+	u8 s_stat, scsicommand, i, identify_message;
+	u8 *ptr;
+	dprintkdbg(DBG_0, "start_scsi: (pid#%li) <%02i-%i> srb=%p\n",
+		srb->cmd->pid, dcb->target_id, dcb->target_lun, srb);
+
+	srb->tag_number = TAG_NONE;	/* acb->tag_max_num: had error read in eeprom */
+
+	s_stat = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL);
+	s_stat2 = 0;
+	s_stat2 = DC395x_read16(acb, TRM_S1040_SCSI_STATUS);
+#if 1
+	if (s_stat & 0x20 /* s_stat2 & 0x02000 */ ) {
+		dprintkdbg(DBG_KG, "start_scsi: (pid#%li) BUSY %02x %04x\n",
+			srb->cmd->pid, s_stat, s_stat2);
+		/*
+		 * Try anyway?
+		 *
+		 * We could, BUT: Sometimes the TRM_S1040 misses to produce a Selection
+		 * Timeout, a Disconnect or a Reselction IRQ, so we would be screwed!
+		 * (This is likely to be a bug in the hardware. Obviously, most people
+		 *  only have one initiator per SCSI bus.)
+		 * Instead let this fail and have the timer make sure the command is 
+		 * tried again after a short time
+		 */
+		/*selto_timer (acb); */
+		return 1;
+	}
+#endif
+	if (acb->active_dcb) {
+		dprintkl(KERN_DEBUG, "start_scsi: (pid#%li) Attempt to start a"
+			"command while another command (pid#%li) is active.",
+			srb->cmd->pid,
+			acb->active_dcb->active_srb ?
+			    acb->active_dcb->active_srb->cmd->pid : 0);
+		return 1;
+	}
+	if (DC395x_read16(acb, TRM_S1040_SCSI_STATUS) & SCSIINTERRUPT) {
+		dprintkdbg(DBG_KG, "start_scsi: (pid#%li) Failed (busy)\n",
+			srb->cmd->pid);
+		return 1;
+	}
+	/* Allow starting of SCSI commands half a second before we allow the mid-level
+	 * to queue them again after a reset */
+	if (time_before(jiffies, acb->scsi_host->last_reset - HZ / 2)) {
+		dprintkdbg(DBG_KG, "start_scsi: Refuse cmds (reset wait)\n");
+		return 1;
+	}
+
+	/* Flush FIFO */
+	clear_fifo(acb, "start_scsi");
+	DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id);
+	DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id);
+	DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period);
+	DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset);
+	srb->scsi_phase = PH_BUS_FREE;	/* initial phase */
+
+	identify_message = dcb->identify_msg;
+	/*DC395x_TRM_write8(TRM_S1040_SCSI_IDMSG, identify_message); */
+	/* Don't allow disconnection for AUTO_REQSENSE: Cont.All.Cond.! */
+	if (srb->flag & AUTO_REQSENSE)
+		identify_message &= 0xBF;
+
+	if (((srb->cmd->cmnd[0] == INQUIRY)
+	     || (srb->cmd->cmnd[0] == REQUEST_SENSE)
+	     || (srb->flag & AUTO_REQSENSE))
+	    && (((dcb->sync_mode & WIDE_NEGO_ENABLE)
+		 && !(dcb->sync_mode & WIDE_NEGO_DONE))
+		|| ((dcb->sync_mode & SYNC_NEGO_ENABLE)
+		    && !(dcb->sync_mode & SYNC_NEGO_DONE)))
+	    && (dcb->target_lun == 0)) {
+		srb->msgout_buf[0] = identify_message;
+		srb->msg_count = 1;
+		scsicommand = SCMD_SEL_ATNSTOP;
+		srb->state = SRB_MSGOUT;
+#ifndef SYNC_FIRST
+		if (dcb->sync_mode & WIDE_NEGO_ENABLE
+		    && dcb->inquiry7 & SCSI_INQ_WBUS16) {
+			build_wdtr(acb, dcb, srb);
+			goto no_cmd;
+		}
+#endif
+		if (dcb->sync_mode & SYNC_NEGO_ENABLE
+		    && dcb->inquiry7 & SCSI_INQ_SYNC) {
+			build_sdtr(acb, dcb, srb);
+			goto no_cmd;
+		}
+		if (dcb->sync_mode & WIDE_NEGO_ENABLE
+		    && dcb->inquiry7 & SCSI_INQ_WBUS16) {
+			build_wdtr(acb, dcb, srb);
+			goto no_cmd;
+		}
+		srb->msg_count = 0;
+	}
+	/* Send identify message */
+	DC395x_write8(acb, TRM_S1040_SCSI_FIFO, identify_message);
+
+	scsicommand = SCMD_SEL_ATN;
+	srb->state = SRB_START_;
+#ifndef DC395x_NO_TAGQ
+	if ((dcb->sync_mode & EN_TAG_QUEUEING)
+	    && (identify_message & 0xC0)) {
+		/* Send Tag message */
+		u32 tag_mask = 1;
+		u8 tag_number = 0;
+		while (tag_mask & dcb->tag_mask
+		       && tag_number <= dcb->max_command) {
+			tag_mask = tag_mask << 1;
+			tag_number++;
+		}
+		if (tag_number >= dcb->max_command) {
+			dprintkl(KERN_WARNING, "start_scsi: (pid#%li) "
+				"Out of tags target=<%02i-%i>)\n",
+				srb->cmd->pid, srb->cmd->device->id,
+				srb->cmd->device->lun);
+			srb->state = SRB_READY;
+			DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
+				       DO_HWRESELECT);
+			return 1;
+		}
+		/* Send Tag id */
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, MSG_SIMPLE_QTAG);
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, tag_number);
+		dcb->tag_mask |= tag_mask;
+		srb->tag_number = tag_number;
+		scsicommand = SCMD_SEL_ATN3;
+		srb->state = SRB_START_;
+	}
+#endif
+/*polling:*/
+	/* Send CDB ..command block ......... */
+	dprintkdbg(DBG_KG, "start_scsi: (pid#%li) <%02i-%i> cmnd=0x%02x tag=%i\n",
+		srb->cmd->pid, srb->cmd->device->id, srb->cmd->device->lun,
+		srb->cmd->cmnd[0], srb->tag_number);
+	if (srb->flag & AUTO_REQSENSE) {
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, REQUEST_SENSE);
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, (dcb->target_lun << 5));
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO,
+			      sizeof(srb->cmd->sense_buffer));
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+	} else {
+		ptr = (u8 *)srb->cmd->cmnd;
+		for (i = 0; i < srb->cmd->cmd_len; i++)
+			DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr++);
+	}
+      no_cmd:
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
+		       DO_HWRESELECT | DO_DATALATCH);
+	if (DC395x_read16(acb, TRM_S1040_SCSI_STATUS) & SCSIINTERRUPT) {
+		/* 
+		 * If start_scsi return 1:
+		 * we caught an interrupt (must be reset or reselection ... )
+		 * : Let's process it first!
+		 */
+		dprintkdbg(DBG_0, "start_scsi: (pid#%li) <%02i-%i> Failed - busy\n",
+			srb->cmd->pid, dcb->target_id, dcb->target_lun);
+		srb->state = SRB_READY;
+		free_tag(dcb, srb);
+		srb->msg_count = 0;
+		return_code = 1;
+		/* This IRQ should NOT get lost, as we did not acknowledge it */
+	} else {
+		/* 
+		 * If start_scsi returns 0:
+		 * we know that the SCSI processor is free
+		 */
+		srb->scsi_phase = PH_BUS_FREE;	/* initial phase */
+		dcb->active_srb = srb;
+		acb->active_dcb = dcb;
+		return_code = 0;
+		/* it's important for atn stop */
+		DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
+			       DO_DATALATCH | DO_HWRESELECT);
+		/* SCSI command */
+		DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, scsicommand);
+	}
+	return return_code;
+}
+
+
+#define DC395x_ENABLE_MSGOUT \
+ DC395x_write16 (acb, TRM_S1040_SCSI_CONTROL, DO_SETATN); \
+ srb->state |= SRB_MSGOUT
+
+
+/* abort command */
+static inline void enable_msgout_abort(struct AdapterCtlBlk *acb,
+		struct ScsiReqBlk *srb)
+{
+	srb->msgout_buf[0] = ABORT;
+	srb->msg_count = 1;
+	DC395x_ENABLE_MSGOUT;
+	srb->state &= ~SRB_MSGIN;
+	srb->state |= SRB_MSGOUT;
+}
+
+
+/**
+ * dc395x_handle_interrupt - Handle an interrupt that has been confirmed to
+ *                           have been triggered for this card.
+ *
+ * @acb:	 a pointer to the adpter control block
+ * @scsi_status: the status return when we checked the card
+ **/
+static void dc395x_handle_interrupt(struct AdapterCtlBlk *acb,
+		u16 scsi_status)
+{
+	struct DeviceCtlBlk *dcb;
+	struct ScsiReqBlk *srb;
+	u16 phase;
+	u8 scsi_intstatus;
+	unsigned long flags;
+	void (*dc395x_statev)(struct AdapterCtlBlk *, struct ScsiReqBlk *, 
+			      u16 *);
+
+	DC395x_LOCK_IO(acb->scsi_host, flags);
+
+	/* This acknowledges the IRQ */
+	scsi_intstatus = DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
+	if ((scsi_status & 0x2007) == 0x2002)
+		dprintkl(KERN_DEBUG,
+			"COP after COP completed? %04x\n", scsi_status);
+	if (debug_enabled(DBG_KG)) {
+		if (scsi_intstatus & INT_SELTIMEOUT)
+			dprintkdbg(DBG_KG, "handle_interrupt: Selection timeout\n");
+	}
+	/*dprintkl(KERN_DEBUG, "handle_interrupt: intstatus = 0x%02x ", scsi_intstatus); */
+
+	if (timer_pending(&acb->selto_timer))
+		del_timer(&acb->selto_timer);
+
+	if (scsi_intstatus & (INT_SELTIMEOUT | INT_DISCONNECT)) {
+		disconnect(acb);	/* bus free interrupt  */
+		goto out_unlock;
+	}
+	if (scsi_intstatus & INT_RESELECTED) {
+		reselect(acb);
+		goto out_unlock;
+	}
+	if (scsi_intstatus & INT_SELECT) {
+		dprintkl(KERN_INFO, "Host does not support target mode!\n");
+		goto out_unlock;
+	}
+	if (scsi_intstatus & INT_SCSIRESET) {
+		scsi_reset_detect(acb);
+		goto out_unlock;
+	}
+	if (scsi_intstatus & (INT_BUSSERVICE | INT_CMDDONE)) {
+		dcb = acb->active_dcb;
+		if (!dcb) {
+			dprintkl(KERN_DEBUG,
+				"Oops: BusService (%04x %02x) w/o ActiveDCB!\n",
+				scsi_status, scsi_intstatus);
+			goto out_unlock;
+		}
+		srb = dcb->active_srb;
+		if (dcb->flag & ABORT_DEV_) {
+			dprintkdbg(DBG_0, "MsgOut Abort Device.....\n");
+			enable_msgout_abort(acb, srb);
+		}
+
+		/* software sequential machine */
+		phase = (u16)srb->scsi_phase;
+
+		/* 
+		 * 62037 or 62137
+		 * call  dc395x_scsi_phase0[]... "phase entry"
+		 * handle every phase before start transfer
+		 */
+		/* data_out_phase0,	phase:0 */
+		/* data_in_phase0,	phase:1 */
+		/* command_phase0,	phase:2 */
+		/* status_phase0,	phase:3 */
+		/* nop0,		phase:4 PH_BUS_FREE .. initial phase */
+		/* nop0,		phase:5 PH_BUS_FREE .. initial phase */
+		/* msgout_phase0,	phase:6 */
+		/* msgin_phase0,	phase:7 */
+		dc395x_statev = dc395x_scsi_phase0[phase];
+		dc395x_statev(acb, srb, &scsi_status);
+
+		/* 
+		 * if there were any exception occured scsi_status
+		 * will be modify to bus free phase new scsi_status
+		 * transfer out from ... previous dc395x_statev
+		 */
+		srb->scsi_phase = scsi_status & PHASEMASK;
+		phase = (u16)scsi_status & PHASEMASK;
+
+		/* 
+		 * call  dc395x_scsi_phase1[]... "phase entry" handle
+		 * every phase to do transfer
+		 */
+		/* data_out_phase1,	phase:0 */
+		/* data_in_phase1,	phase:1 */
+		/* command_phase1,	phase:2 */
+		/* status_phase1,	phase:3 */
+		/* nop1,		phase:4 PH_BUS_FREE .. initial phase */
+		/* nop1,		phase:5 PH_BUS_FREE .. initial phase */
+		/* msgout_phase1,	phase:6 */
+		/* msgin_phase1,	phase:7 */
+		dc395x_statev = dc395x_scsi_phase1[phase];
+		dc395x_statev(acb, srb, &scsi_status);
+	}
+      out_unlock:
+	DC395x_UNLOCK_IO(acb->scsi_host, flags);
+}
+
+
+static irqreturn_t dc395x_interrupt(int irq, void *dev_id,
+		struct pt_regs *regs)
+{
+	struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)dev_id;
+	u16 scsi_status;
+	u8 dma_status;
+	irqreturn_t handled = IRQ_NONE;
+
+	/*
+	 * Check for pending interupt
+	 */
+	scsi_status = DC395x_read16(acb, TRM_S1040_SCSI_STATUS);
+	dma_status = DC395x_read8(acb, TRM_S1040_DMA_STATUS);
+	if (scsi_status & SCSIINTERRUPT) {
+		/* interupt pending - let's process it! */
+		dc395x_handle_interrupt(acb, scsi_status);
+		handled = IRQ_HANDLED;
+	}
+	else if (dma_status & 0x20) {
+		/* Error from the DMA engine */
+		dprintkl(KERN_INFO, "Interrupt from DMA engine: 0x%02x!\n", dma_status);
+#if 0
+		dprintkl(KERN_INFO, "This means DMA error! Try to handle ...\n");
+		if (acb->active_dcb) {
+			acb->active_dcb-> flag |= ABORT_DEV_;
+			if (acb->active_dcb->active_srb)
+				enable_msgout_abort(acb, acb->active_dcb->active_srb);
+		}
+		DC395x_write8(acb, TRM_S1040_DMA_CONTROL, ABORTXFER | CLRXFIFO);
+#else
+		dprintkl(KERN_INFO, "Ignoring DMA error (probably a bad thing) ...\n");
+		acb = NULL;
+#endif
+		handled = IRQ_HANDLED;
+	}
+
+	return handled;
+}
+
+
+static void msgout_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	dprintkdbg(DBG_0, "msgout_phase0: (pid#%li)\n", srb->cmd->pid);
+	if (srb->state & (SRB_UNEXPECT_RESEL + SRB_ABORT_SENT))
+		*pscsi_status = PH_BUS_FREE;	/*.. initial phase */
+
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);	/* it's important for atn stop */
+	srb->state &= ~SRB_MSGOUT;
+}
+
+
+static void msgout_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	u16 i;
+	u8 *ptr;
+	dprintkdbg(DBG_0, "msgout_phase1: (pid#%li)\n", srb->cmd->pid);
+
+	clear_fifo(acb, "msgout_phase1");
+	if (!(srb->state & SRB_MSGOUT)) {
+		srb->state |= SRB_MSGOUT;
+		dprintkl(KERN_DEBUG,
+			"msgout_phase1: (pid#%li) Phase unexpected\n",
+			srb->cmd->pid);	/* So what ? */
+	}
+	if (!srb->msg_count) {
+		dprintkdbg(DBG_0, "msgout_phase1: (pid#%li) NOP msg\n",
+			srb->cmd->pid);
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, MSG_NOP);
+		DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);	/* it's important for atn stop */
+		DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT);
+		return;
+	}
+	ptr = (u8 *)srb->msgout_buf;
+	for (i = 0; i < srb->msg_count; i++)
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr++);
+	srb->msg_count = 0;
+	if (srb->msgout_buf[0] == MSG_ABORT)
+		srb->state = SRB_ABORT_SENT;
+
+	DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT);
+}
+
+
+static void command_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	dprintkdbg(DBG_0, "command_phase0: (pid#%li)\n", srb->cmd->pid);
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);
+}
+
+
+static void command_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	struct DeviceCtlBlk *dcb;
+	u8 *ptr;
+	u16 i;
+	dprintkdbg(DBG_0, "command_phase1: (pid#%li)\n", srb->cmd->pid);
+
+	clear_fifo(acb, "command_phase1");
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_CLRATN);
+	if (!(srb->flag & AUTO_REQSENSE)) {
+		ptr = (u8 *)srb->cmd->cmnd;
+		for (i = 0; i < srb->cmd->cmd_len; i++) {
+			DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *ptr);
+			ptr++;
+		}
+	} else {
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, REQUEST_SENSE);
+		dcb = acb->active_dcb;
+		/* target id */
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, (dcb->target_lun << 5));
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO,
+			      sizeof(srb->cmd->sense_buffer));
+		DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+	}
+	srb->state |= SRB_COMMAND;
+	/* it's important for atn stop */
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);
+	/* SCSI command */
+	DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_OUT);
+}
+
+
+/*
+ * Verify that the remaining space in the hw sg lists is the same as
+ * the count of remaining bytes in srb->total_xfer_length
+ */
+static void sg_verify_length(struct ScsiReqBlk *srb)
+{
+	if (debug_enabled(DBG_SG)) {
+		unsigned len = 0;
+		unsigned idx = srb->sg_index;
+		struct SGentry *psge = srb->segment_x + idx;
+		for (; idx < srb->sg_count; psge++, idx++)
+			len += psge->length;
+		if (len != srb->total_xfer_length)
+			dprintkdbg(DBG_SG,
+			       "Inconsistent SRB S/G lengths (Tot=%i, Count=%i) !!\n",
+			       srb->total_xfer_length, len);
+	}			       
+}
+
+
+/*
+ * Compute the next Scatter Gather list index and adjust its length
+ * and address if necessary; also compute virt_addr
+ */
+static void sg_update_list(struct ScsiReqBlk *srb, u32 left)
+{
+	u8 idx;
+	struct scatterlist *sg;
+	struct scsi_cmnd *cmd = srb->cmd;
+	int segment = cmd->use_sg;
+	u32 xferred = srb->total_xfer_length - left; /* bytes transfered */
+	struct SGentry *psge = srb->segment_x + srb->sg_index;
+	void **virt = srb->virt_map;
+
+	dprintkdbg(DBG_0,
+		"sg_update_list: Transfered %i of %i bytes, %i remain\n",
+		xferred, srb->total_xfer_length, left);
+	if (xferred == 0) {
+		/* nothing to update since we did not transfer any data */
+		return;
+	}
+
+	sg_verify_length(srb);
+	srb->total_xfer_length = left;	/* update remaining count */
+	for (idx = srb->sg_index; idx < srb->sg_count; idx++) {
+		if (xferred >= psge->length) {
+			/* Complete SG entries done */
+			xferred -= psge->length;
+		} else {
+			/* Partial SG entry done */
+			psge->length -= xferred;
+			psge->address += xferred;
+			srb->sg_index = idx;
+			pci_dma_sync_single_for_device(srb->dcb->
+					    acb->dev,
+					    srb->sg_bus_addr,
+					    SEGMENTX_LEN,
+					    PCI_DMA_TODEVICE);
+			break;
+		}
+		psge++;
+	}
+	sg_verify_length(srb);
+
+	/* we need the corresponding virtual address */
+	if (!segment) {
+		srb->virt_addr += xferred;
+		return;
+	}
+
+	/* We have to walk the scatterlist to find it */
+	sg = (struct scatterlist *)cmd->request_buffer;
+	idx = 0;
+	while (segment--) {
+		unsigned long mask =
+		    ~((unsigned long)sg->length - 1) & PAGE_MASK;
+		if ((sg_dma_address(sg) & mask) == (psge->address & mask)) {
+			srb->virt_addr = virt[idx] + (psge->address & ~PAGE_MASK);
+			return;
+		}
+		++sg;
+		++idx;
+	}
+
+	dprintkl(KERN_ERR, "sg_update_list: sg_to_virt failed\n");
+	srb->virt_addr = NULL;
+}
+
+
+/*
+ * We have transfered a single byte (PIO mode?) and need to update
+ * the count of bytes remaining (total_xfer_length) and update the sg
+ * entry to either point to next byte in the current sg entry, or of
+ * already at the end to point to the start of the next sg entry
+ */
+static void sg_subtract_one(struct ScsiReqBlk *srb)
+{
+	srb->total_xfer_length--;
+	srb->segment_x[srb->sg_index].length--;
+	if (srb->total_xfer_length &&
+	    !srb->segment_x[srb->sg_index].length) {
+		if (debug_enabled(DBG_PIO))
+			printk(" (next segment)");
+		srb->sg_index++;
+		sg_update_list(srb, srb->total_xfer_length);
+	}
+}
+
+
+/* 
+ * cleanup_after_transfer
+ * 
+ * Makes sure, DMA and SCSI engine are empty, after the transfer has finished
+ * KG: Currently called from  StatusPhase1 ()
+ * Should probably also be called from other places
+ * Best might be to call it in DataXXPhase0, if new phase will differ 
+ */
+static void cleanup_after_transfer(struct AdapterCtlBlk *acb,
+		struct ScsiReqBlk *srb)
+{
+	/*DC395x_write8 (TRM_S1040_DMA_STATUS, FORCEDMACOMP); */
+	if (DC395x_read16(acb, TRM_S1040_DMA_COMMAND) & 0x0001) {	/* read */
+		if (!(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & 0x40))
+			clear_fifo(acb, "cleanup/in");
+		if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80))
+			DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
+	} else {		/* write */
+		if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80))
+			DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
+		if (!(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & 0x40))
+			clear_fifo(acb, "cleanup/out");
+	}
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);
+}
+
+
+/*
+ * Those no of bytes will be transfered w/ PIO through the SCSI FIFO
+ * Seems to be needed for unknown reasons; could be a hardware bug :-(
+ */
+#define DC395x_LASTPIO 4
+
+
+static void data_out_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	struct DeviceCtlBlk *dcb = srb->dcb;
+	u16 scsi_status = *pscsi_status;
+	u32 d_left_counter = 0;
+	dprintkdbg(DBG_0, "data_out_phase0: (pid#%li) <%02i-%i>\n",
+		srb->cmd->pid, srb->cmd->device->id, srb->cmd->device->lun);
+
+	/*
+	 * KG: We need to drain the buffers before we draw any conclusions!
+	 * This means telling the DMA to push the rest into SCSI, telling
+	 * SCSI to push the rest to the bus.
+	 * However, the device might have been the one to stop us (phase
+	 * change), and the data in transit just needs to be accounted so
+	 * it can be retransmitted.)
+	 */
+	/* 
+	 * KG: Stop DMA engine pushing more data into the SCSI FIFO
+	 * If we need more data, the DMA SG list will be freshly set up, anyway
+	 */
+	dprintkdbg(DBG_PIO, "data_out_phase0: "
+		"DMA{fifcnt=0x%02x fifostat=0x%02x} "
+		"SCSI{fifocnt=0x%02x cnt=0x%06x status=0x%04x} total=0x%06x\n",
+		DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
+		DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
+		DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
+		DC395x_read32(acb, TRM_S1040_SCSI_COUNTER), scsi_status,
+		srb->total_xfer_length);
+	DC395x_write8(acb, TRM_S1040_DMA_CONTROL, STOPDMAXFER | CLRXFIFO);
+
+	if (!(srb->state & SRB_XFERPAD)) {
+		if (scsi_status & PARITYERROR)
+			srb->status |= PARITY_ERROR;
+
+		/*
+		 * KG: Right, we can't just rely on the SCSI_COUNTER, because this
+		 * is the no of bytes it got from the DMA engine not the no it 
+		 * transferred successfully to the device. (And the difference could
+		 * be as much as the FIFO size, I guess ...)
+		 */
+		if (!(scsi_status & SCSIXFERDONE)) {
+			/*
+			 * when data transfer from DMA FIFO to SCSI FIFO
+			 * if there was some data left in SCSI FIFO
+			 */
+			d_left_counter =
+			    (u32)(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) &
+				  0x1F);
+			if (dcb->sync_period & WIDE_SYNC)
+				d_left_counter <<= 1;
+
+			dprintkdbg(DBG_KG, "data_out_phase0: FIFO contains %i %s\n"
+				"SCSI{fifocnt=0x%02x cnt=0x%08x} "
+				"DMA{fifocnt=0x%04x cnt=0x%02x ctr=0x%08x}\n",
+				DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
+				(dcb->sync_period & WIDE_SYNC) ? "words" : "bytes",
+				DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
+				DC395x_read32(acb, TRM_S1040_SCSI_COUNTER),
+				DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
+				DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
+				DC395x_read32(acb, TRM_S1040_DMA_CXCNT));
+		}
+		/*
+		 * calculate all the residue data that not yet transfered
+		 * SCSI transfer counter + left in SCSI FIFO data
+		 *
+		 * .....TRM_S1040_SCSI_COUNTER (24bits)
+		 * The counter always decrement by one for every SCSI byte transfer.
+		 * .....TRM_S1040_SCSI_FIFOCNT ( 5bits)
+		 * The counter is SCSI FIFO offset counter (in units of bytes or! words)
+		 */
+		if (srb->total_xfer_length > DC395x_LASTPIO)
+			d_left_counter +=
+			    DC395x_read32(acb, TRM_S1040_SCSI_COUNTER);
+
+		/* Is this a good idea? */
+		/*clear_fifo(acb, "DOP1"); */
+		/* KG: What is this supposed to be useful for? WIDE padding stuff? */
+		if (d_left_counter == 1 && dcb->sync_period & WIDE_SYNC
+		    && srb->cmd->request_bufflen % 2) {
+			d_left_counter = 0;
+			dprintkl(KERN_INFO,
+				"data_out_phase0: Discard 1 byte (0x%02x)\n",
+				scsi_status);
+		}
+		/*
+		 * KG: Oops again. Same thinko as above: The SCSI might have been
+		 * faster than the DMA engine, so that it ran out of data.
+		 * In that case, we have to do just nothing! 
+		 * But: Why the interrupt: No phase change. No XFERCNT_2_ZERO. Or?
+		 */
+		/*
+		 * KG: This is nonsense: We have been WRITING data to the bus
+		 * If the SCSI engine has no bytes left, how should the DMA engine?
+		 */
+		if (d_left_counter == 0) {
+			srb->total_xfer_length = 0;
+		} else {
+			/*
+			 * if transfer not yet complete
+			 * there were some data residue in SCSI FIFO or
+			 * SCSI transfer counter not empty
+			 */
+			long oldxferred =
+			    srb->total_xfer_length - d_left_counter;
+			const int diff =
+			    (dcb->sync_period & WIDE_SYNC) ? 2 : 1;
+			sg_update_list(srb, d_left_counter);
+			/* KG: Most ugly hack! Apparently, this works around a chip bug */
+			if ((srb->segment_x[srb->sg_index].length ==
+			     diff && srb->cmd->use_sg)
+			    || ((oldxferred & ~PAGE_MASK) ==
+				(PAGE_SIZE - diff))
+			    ) {
+				dprintkl(KERN_INFO, "data_out_phase0: "
+					"Work around chip bug (%i)?\n", diff);
+				d_left_counter =
+				    srb->total_xfer_length - diff;
+				sg_update_list(srb, d_left_counter);
+				/*srb->total_xfer_length -= diff; */
+				/*srb->virt_addr += diff; */
+				/*if (srb->cmd->use_sg) */
+				/*      srb->sg_index++; */
+			}
+		}
+	}
+	if ((*pscsi_status & PHASEMASK) != PH_DATA_OUT) {
+		cleanup_after_transfer(acb, srb);
+	}
+}
+
+
+static void data_out_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	dprintkdbg(DBG_0, "data_out_phase1: (pid#%li) <%02i-%i>\n",
+		srb->cmd->pid, srb->cmd->device->id, srb->cmd->device->lun);
+	clear_fifo(acb, "data_out_phase1");
+	/* do prepare before transfer when data out phase */
+	data_io_transfer(acb, srb, XFERDATAOUT);
+}
+
+
+static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	u16 scsi_status = *pscsi_status;
+	u32 d_left_counter = 0;
+	dprintkdbg(DBG_0, "data_in_phase0: (pid#%li) <%02i-%i>\n",
+		srb->cmd->pid, srb->cmd->device->id, srb->cmd->device->lun);
+
+	/*
+	 * KG: DataIn is much more tricky than DataOut. When the device is finished
+	 * and switches to another phase, the SCSI engine should be finished too.
+	 * But: There might still be bytes left in its FIFO to be fetched by the DMA
+	 * engine and transferred to memory.
+	 * We should wait for the FIFOs to be emptied by that (is there any way to 
+	 * enforce this?) and then stop the DMA engine, because it might think, that
+	 * there are more bytes to follow. Yes, the device might disconnect prior to
+	 * having all bytes transferred! 
+	 * Also we should make sure that all data from the DMA engine buffer's really
+	 * made its way to the system memory! Some documentation on this would not
+	 * seem to be a bad idea, actually.
+	 */
+	if (!(srb->state & SRB_XFERPAD)) {
+		if (scsi_status & PARITYERROR) {
+			dprintkl(KERN_INFO, "data_in_phase0: (pid#%li) "
+				"Parity Error\n", srb->cmd->pid);
+			srb->status |= PARITY_ERROR;
+		}
+		/*
+		 * KG: We should wait for the DMA FIFO to be empty ...
+		 * but: it would be better to wait first for the SCSI FIFO and then the
+		 * the DMA FIFO to become empty? How do we know, that the device not already
+		 * sent data to the FIFO in a MsgIn phase, eg.?
+		 */
+		if (!(DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT) & 0x80)) {
+#if 0
+			int ctr = 6000000;
+			dprintkl(KERN_DEBUG,
+				"DIP0: Wait for DMA FIFO to flush ...\n");
+			/*DC395x_write8  (TRM_S1040_DMA_CONTROL, STOPDMAXFER); */
+			/*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 7); */
+			/*DC395x_write8  (TRM_S1040_SCSI_COMMAND, SCMD_DMA_IN); */
+			while (!
+			       (DC395x_read16(acb, TRM_S1040_DMA_FIFOSTAT) &
+				0x80) && --ctr);
+			if (ctr < 6000000 - 1)
+				dprintkl(KERN_DEBUG
+				       "DIP0: Had to wait for DMA ...\n");
+			if (!ctr)
+				dprintkl(KERN_ERR,
+				       "Deadlock in DIP0 waiting for DMA FIFO empty!!\n");
+			/*DC395x_write32 (TRM_S1040_SCSI_COUNTER, 0); */
+#endif
+			dprintkdbg(DBG_KG, "data_in_phase0: "
+				"DMA{fifocnt=0x%02x fifostat=0x%02x}\n",
+				DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
+				DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT));
+		}
+		/* Now: Check remainig data: The SCSI counters should tell us ... */
+		d_left_counter = DC395x_read32(acb, TRM_S1040_SCSI_COUNTER)
+		    + ((DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & 0x1f)
+		       << ((srb->dcb->sync_period & WIDE_SYNC) ? 1 :
+			   0));
+		dprintkdbg(DBG_KG, "data_in_phase0: "
+			"SCSI{fifocnt=0x%02x%s ctr=0x%08x} "
+			"DMA{fifocnt=0x%02x fifostat=0x%02x ctr=0x%08x} "
+			"Remain{totxfer=%i scsi_fifo+ctr=%i}\n",
+			DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT),
+			(srb->dcb->sync_period & WIDE_SYNC) ? "words" : "bytes",
+			DC395x_read32(acb, TRM_S1040_SCSI_COUNTER),
+			DC395x_read8(acb, TRM_S1040_DMA_FIFOCNT),
+			DC395x_read8(acb, TRM_S1040_DMA_FIFOSTAT),
+			DC395x_read32(acb, TRM_S1040_DMA_CXCNT),
+			srb->total_xfer_length, d_left_counter);
+#if DC395x_LASTPIO
+		/* KG: Less than or equal to 4 bytes can not be transfered via DMA, it seems. */
+		if (d_left_counter
+		    && srb->total_xfer_length <= DC395x_LASTPIO) {
+			/*u32 addr = (srb->segment_x[srb->sg_index].address); */
+			/*sg_update_list (srb, d_left_counter); */
+			dprintkdbg(DBG_PIO, "data_in_phase0: PIO (%i %s) to "
+				"%p for remaining %i bytes:",
+				DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) & 0x1f,
+				(srb->dcb->sync_period & WIDE_SYNC) ?
+				    "words" : "bytes",
+				srb->virt_addr,
+				srb->total_xfer_length);
+			if (srb->dcb->sync_period & WIDE_SYNC)
+				DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2,
+					      CFG2_WIDEFIFO);
+			while (DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) != 0x40) {
+				u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+				*(srb->virt_addr)++ = byte;
+				if (debug_enabled(DBG_PIO))
+					printk(" %02x", byte);
+				d_left_counter--;
+				sg_subtract_one(srb);
+			}
+			if (srb->dcb->sync_period & WIDE_SYNC) {
+#if 1
+                /* Read the last byte ... */
+				if (srb->total_xfer_length > 0) {
+					u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+					*(srb->virt_addr)++ = byte;
+					srb->total_xfer_length--;
+					if (debug_enabled(DBG_PIO))
+						printk(" %02x", byte);
+				}
+#endif
+				DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0);
+			}
+			/*printk(" %08x", *(u32*)(bus_to_virt (addr))); */
+			/*srb->total_xfer_length = 0; */
+			if (debug_enabled(DBG_PIO))
+				printk("\n");
+		}
+#endif				/* DC395x_LASTPIO */
+
+#if 0
+		/*
+		 * KG: This was in DATAOUT. Does it also belong here?
+		 * Nobody seems to know what counter and fifo_cnt count exactly ...
+		 */
+		if (!(scsi_status & SCSIXFERDONE)) {
+			/*
+			 * when data transfer from DMA FIFO to SCSI FIFO
+			 * if there was some data left in SCSI FIFO
+			 */
+			d_left_counter =
+			    (u32)(DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) &
+				  0x1F);
+			if (srb->dcb->sync_period & WIDE_SYNC)
+				d_left_counter <<= 1;
+			/*
+			 * if WIDE scsi SCSI FIFOCNT unit is word !!!
+			 * so need to *= 2
+			 * KG: Seems to be correct ...
+			 */
+		}
+#endif
+		/* KG: This should not be needed any more! */
+		if (d_left_counter == 0
+		    || (scsi_status & SCSIXFERCNT_2_ZERO)) {
+#if 0
+			int ctr = 6000000;
+			u8 TempDMAstatus;
+			do {
+				TempDMAstatus =
+				    DC395x_read8(acb, TRM_S1040_DMA_STATUS);
+			} while (!(TempDMAstatus & DMAXFERCOMP) && --ctr);
+			if (!ctr)
+				dprintkl(KERN_ERR,
+				       "Deadlock in DataInPhase0 waiting for DMA!!\n");
+			srb->total_xfer_length = 0;
+#endif
+			srb->total_xfer_length = d_left_counter;
+		} else {	/* phase changed */
+			/*
+			 * parsing the case:
+			 * when a transfer not yet complete 
+			 * but be disconnected by target
+			 * if transfer not yet complete
+			 * there were some data residue in SCSI FIFO or
+			 * SCSI transfer counter not empty
+			 */
+			sg_update_list(srb, d_left_counter);
+		}
+	}
+	/* KG: The target may decide to disconnect: Empty FIFO before! */
+	if ((*pscsi_status & PHASEMASK) != PH_DATA_IN) {
+		cleanup_after_transfer(acb, srb);
+	}
+}
+
+
+static void data_in_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	dprintkdbg(DBG_0, "data_in_phase1: (pid#%li) <%02i-%i>\n",
+		srb->cmd->pid, srb->cmd->device->id, srb->cmd->device->lun);
+	data_io_transfer(acb, srb, XFERDATAIN);
+}
+
+
+static void data_io_transfer(struct AdapterCtlBlk *acb, 
+		struct ScsiReqBlk *srb, u16 io_dir)
+{
+	struct DeviceCtlBlk *dcb = srb->dcb;
+	u8 bval;
+	dprintkdbg(DBG_0,
+		"data_io_transfer: (pid#%li) <%02i-%i> %c len=%i, sg=(%i/%i)\n",
+		srb->cmd->pid, srb->cmd->device->id, srb->cmd->device->lun,
+		((io_dir & DMACMD_DIR) ? 'r' : 'w'),
+		srb->total_xfer_length, srb->sg_index, srb->sg_count);
+	if (srb == acb->tmp_srb)
+		dprintkl(KERN_ERR, "data_io_transfer: Using tmp_srb!\n");
+	if (srb->sg_index >= srb->sg_count) {
+		/* can't happen? out of bounds error */
+		return;
+	}
+
+	if (srb->total_xfer_length > DC395x_LASTPIO) {
+		u8 dma_status = DC395x_read8(acb, TRM_S1040_DMA_STATUS);
+		/*
+		 * KG: What should we do: Use SCSI Cmd 0x90/0x92?
+		 * Maybe, even ABORTXFER would be appropriate
+		 */
+		if (dma_status & XFERPENDING) {
+			dprintkl(KERN_DEBUG, "data_io_transfer: Xfer pending! "
+				"Expect trouble!\n");
+			dump_register_info(acb, dcb, srb);
+			DC395x_write8(acb, TRM_S1040_DMA_CONTROL, CLRXFIFO);
+		}
+		/* clear_fifo(acb, "IO"); */
+		/* 
+		 * load what physical address of Scatter/Gather list table
+		 * want to be transfer
+		 */
+		srb->state |= SRB_DATA_XFER;
+		DC395x_write32(acb, TRM_S1040_DMA_XHIGHADDR, 0);
+		if (srb->cmd->use_sg) {	/* with S/G */
+			io_dir |= DMACMD_SG;
+			DC395x_write32(acb, TRM_S1040_DMA_XLOWADDR,
+				       srb->sg_bus_addr +
+				       sizeof(struct SGentry) *
+				       srb->sg_index);
+			/* load how many bytes in the sg list table */
+			DC395x_write32(acb, TRM_S1040_DMA_XCNT,
+				       ((u32)(srb->sg_count -
+					      srb->sg_index) << 3));
+		} else {	/* without S/G */
+			io_dir &= ~DMACMD_SG;
+			DC395x_write32(acb, TRM_S1040_DMA_XLOWADDR,
+				       srb->segment_x[0].address);
+			DC395x_write32(acb, TRM_S1040_DMA_XCNT,
+				       srb->segment_x[0].length);
+		}
+		/* load total transfer length (24bits) max value 16Mbyte */
+		DC395x_write32(acb, TRM_S1040_SCSI_COUNTER,
+			       srb->total_xfer_length);
+		DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);	/* it's important for atn stop */
+		if (io_dir & DMACMD_DIR) {	/* read */
+			DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
+				      SCMD_DMA_IN);
+			DC395x_write16(acb, TRM_S1040_DMA_COMMAND, io_dir);
+		} else {
+			DC395x_write16(acb, TRM_S1040_DMA_COMMAND, io_dir);
+			DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
+				      SCMD_DMA_OUT);
+		}
+
+	}
+#if DC395x_LASTPIO
+	else if (srb->total_xfer_length > 0) {	/* The last four bytes: Do PIO */
+		/* 
+		 * load what physical address of Scatter/Gather list table
+		 * want to be transfer
+		 */
+		srb->state |= SRB_DATA_XFER;
+		/* load total transfer length (24bits) max value 16Mbyte */
+		DC395x_write32(acb, TRM_S1040_SCSI_COUNTER,
+			       srb->total_xfer_length);
+		DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);	/* it's important for atn stop */
+		if (io_dir & DMACMD_DIR) {	/* read */
+			DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
+				      SCMD_FIFO_IN);
+		} else {	/* write */
+			int ln = srb->total_xfer_length;
+			if (srb->dcb->sync_period & WIDE_SYNC)
+				DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2,
+				     CFG2_WIDEFIFO);
+			dprintkdbg(DBG_PIO,
+				"data_io_transfer: PIO %i bytes from %p:",
+				srb->total_xfer_length, srb->virt_addr);
+
+			while (srb->total_xfer_length) {
+				if (debug_enabled(DBG_PIO))
+					printk(" %02x", (unsigned char) *(srb->virt_addr));
+
+				DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 
+				     *(srb->virt_addr)++);
+
+				sg_subtract_one(srb);
+			}
+			if (srb->dcb->sync_period & WIDE_SYNC) {
+				if (ln % 2) {
+					DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
+					if (debug_enabled(DBG_PIO))
+						printk(" |00");
+				}
+				DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0);
+			}
+			/*DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, ln); */
+			if (debug_enabled(DBG_PIO))
+				printk("\n");
+			DC395x_write8(acb, TRM_S1040_SCSI_COMMAND,
+					  SCMD_FIFO_OUT);
+		}
+	}
+#endif				/* DC395x_LASTPIO */
+	else {		/* xfer pad */
+		u8 data = 0, data2 = 0;
+		if (srb->sg_count) {
+			srb->adapter_status = H_OVER_UNDER_RUN;
+			srb->status |= OVER_RUN;
+		}
+		/*
+		 * KG: despite the fact that we are using 16 bits I/O ops
+		 * the SCSI FIFO is only 8 bits according to the docs
+		 * (we can set bit 1 in 0x8f to serialize FIFO access ...)
+		 */
+		if (dcb->sync_period & WIDE_SYNC) {
+			DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 2);
+			DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2,
+				      CFG2_WIDEFIFO);
+			if (io_dir & DMACMD_DIR) {
+				data = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+				data2 = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+			} else {
+				/* Danger, Robinson: If you find KGs
+				 * scattered over the wide disk, the driver
+				 * or chip is to blame :-( */
+				DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'K');
+				DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'G');
+			}
+			DC395x_write8(acb, TRM_S1040_SCSI_CONFIG2, 0);
+		} else {
+			DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 1);
+			/* Danger, Robinson: If you find a collection of Ks on your disk
+			 * something broke :-( */
+			if (io_dir & DMACMD_DIR)
+				data = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+			else
+				DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 'K');
+		}
+		srb->state |= SRB_XFERPAD;
+		DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);	/* it's important for atn stop */
+		/* SCSI command */
+		bval = (io_dir & DMACMD_DIR) ? SCMD_FIFO_IN : SCMD_FIFO_OUT;
+		DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, bval);
+	}
+}
+
+
+static void status_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	dprintkdbg(DBG_0, "status_phase0: (pid#%li) <%02i-%i>\n",
+		srb->cmd->pid, srb->cmd->device->id, srb->cmd->device->lun);
+	srb->target_status = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+	srb->end_message = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);	/* get message */
+	srb->state = SRB_COMPLETED;
+	*pscsi_status = PH_BUS_FREE;	/*.. initial phase */
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);	/* it's important for atn stop */
+	DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT);
+}
+
+
+static void status_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	dprintkdbg(DBG_0, "status_phase1: (pid#%li) <%02i-%i>\n",
+		srb->cmd->pid, srb->cmd->device->id, srb->cmd->device->lun);
+	srb->state = SRB_STATUS;
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);	/* it's important for atn stop */
+	DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_COMP);
+}
+
+
+/* Check if the message is complete */
+static inline u8 msgin_completed(u8 * msgbuf, u32 len)
+{
+	if (*msgbuf == EXTENDED_MESSAGE) {
+		if (len < 2)
+			return 0;
+		if (len < msgbuf[1] + 2)
+			return 0;
+	} else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f)	/* two byte messages */
+		if (len < 2)
+			return 0;
+	return 1;
+}
+
+/* reject_msg */
+static inline void msgin_reject(struct AdapterCtlBlk *acb,
+		struct ScsiReqBlk *srb)
+{
+	srb->msgout_buf[0] = MESSAGE_REJECT;
+	srb->msg_count = 1;
+	DC395x_ENABLE_MSGOUT;
+	srb->state &= ~SRB_MSGIN;
+	srb->state |= SRB_MSGOUT;
+	dprintkl(KERN_INFO, "msgin_reject: 0x%02x <%02i-%i>\n",
+		srb->msgin_buf[0],
+		srb->dcb->target_id, srb->dcb->target_lun);
+}
+
+
+static struct ScsiReqBlk *msgin_qtag(struct AdapterCtlBlk *acb,
+		struct DeviceCtlBlk *dcb, u8 tag)
+{
+	struct ScsiReqBlk *srb = NULL;
+	struct ScsiReqBlk *i;
+	dprintkdbg(DBG_0, "msgin_qtag: (pid#%li) tag=%i srb=%p\n",
+		   srb->cmd->pid, tag, srb);
+
+	if (!(dcb->tag_mask & (1 << tag)))
+		dprintkl(KERN_DEBUG,
+			"msgin_qtag: tag_mask=0x%08x does not reserve tag %i!\n",
+			dcb->tag_mask, tag);
+
+	if (list_empty(&dcb->srb_going_list))
+		goto mingx0;
+	list_for_each_entry(i, &dcb->srb_going_list, list) {
+		if (i->tag_number == tag) {
+			srb = i;
+			break;
+		}
+	}
+	if (!srb)
+		goto mingx0;
+
+	dprintkdbg(DBG_0, "msgin_qtag: (pid#%li) <%02i-%i>\n",
+		srb->cmd->pid, srb->dcb->target_id, srb->dcb->target_lun);
+	if (dcb->flag & ABORT_DEV_) {
+		/*srb->state = SRB_ABORT_SENT; */
+		enable_msgout_abort(acb, srb);
+	}
+
+	if (!(srb->state & SRB_DISCONNECT))
+		goto mingx0;
+
+	memcpy(srb->msgin_buf, dcb->active_srb->msgin_buf, acb->msg_len);
+	srb->state |= dcb->active_srb->state;
+	srb->state |= SRB_DATA_XFER;
+	dcb->active_srb = srb;
+	/* How can we make the DORS happy? */
+	return srb;
+
+      mingx0:
+	srb = acb->tmp_srb;
+	srb->state = SRB_UNEXPECT_RESEL;
+	dcb->active_srb = srb;
+	srb->msgout_buf[0] = MSG_ABORT_TAG;
+	srb->msg_count = 1;
+	DC395x_ENABLE_MSGOUT;
+	dprintkl(KERN_DEBUG, "msgin_qtag: Unknown tag %i - abort\n", tag);
+	return srb;
+}
+
+
+static inline void reprogram_regs(struct AdapterCtlBlk *acb,
+		struct DeviceCtlBlk *dcb)
+{
+	DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id);
+	DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period);
+	DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset);
+	set_xfer_rate(acb, dcb);
+}
+
+
+/* set async transfer mode */
+static void msgin_set_async(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+	struct DeviceCtlBlk *dcb = srb->dcb;
+	dprintkl(KERN_DEBUG, "msgin_set_async: No sync transfers <%02i-%i>\n",
+		dcb->target_id, dcb->target_lun);
+
+	dcb->sync_mode &= ~(SYNC_NEGO_ENABLE);
+	dcb->sync_mode |= SYNC_NEGO_DONE;
+	/*dcb->sync_period &= 0; */
+	dcb->sync_offset = 0;
+	dcb->min_nego_period = 200 >> 2;	/* 200ns <=> 5 MHz */
+	srb->state &= ~SRB_DO_SYNC_NEGO;
+	reprogram_regs(acb, dcb);
+	if ((dcb->sync_mode & WIDE_NEGO_ENABLE)
+	    && !(dcb->sync_mode & WIDE_NEGO_DONE)) {
+		build_wdtr(acb, dcb, srb);
+		DC395x_ENABLE_MSGOUT;
+		dprintkdbg(DBG_0, "msgin_set_async(rej): Try WDTR anyway\n");
+	}
+}
+
+
+/* set sync transfer mode */
+static void msgin_set_sync(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+	struct DeviceCtlBlk *dcb = srb->dcb;
+	u8 bval;
+	int fact;
+	dprintkdbg(DBG_1, "msgin_set_sync: <%02i> Sync: %ins "
+		"(%02i.%01i MHz) Offset %i\n",
+		dcb->target_id, srb->msgin_buf[3] << 2,
+		(250 / srb->msgin_buf[3]),
+		((250 % srb->msgin_buf[3]) * 10) / srb->msgin_buf[3],
+		srb->msgin_buf[4]);
+
+	if (srb->msgin_buf[4] > 15)
+		srb->msgin_buf[4] = 15;
+	if (!(dcb->dev_mode & NTC_DO_SYNC_NEGO))
+		dcb->sync_offset = 0;
+	else if (dcb->sync_offset == 0)
+		dcb->sync_offset = srb->msgin_buf[4];
+	if (srb->msgin_buf[4] > dcb->sync_offset)
+		srb->msgin_buf[4] = dcb->sync_offset;
+	else
+		dcb->sync_offset = srb->msgin_buf[4];
+	bval = 0;
+	while (bval < 7 && (srb->msgin_buf[3] > clock_period[bval]
+			    || dcb->min_nego_period >
+			    clock_period[bval]))
+		bval++;
+	if (srb->msgin_buf[3] < clock_period[bval])
+		dprintkl(KERN_INFO,
+			"msgin_set_sync: Increase sync nego period to %ins\n",
+			clock_period[bval] << 2);
+	srb->msgin_buf[3] = clock_period[bval];
+	dcb->sync_period &= 0xf0;
+	dcb->sync_period |= ALT_SYNC | bval;
+	dcb->min_nego_period = srb->msgin_buf[3];
+
+	if (dcb->sync_period & WIDE_SYNC)
+		fact = 500;
+	else
+		fact = 250;
+
+	dprintkl(KERN_INFO,
+		"Target %02i: %s Sync: %ins Offset %i (%02i.%01i MB/s)\n",
+		dcb->target_id, (fact == 500) ? "Wide16" : "",
+		dcb->min_nego_period << 2, dcb->sync_offset,
+		(fact / dcb->min_nego_period),
+		((fact % dcb->min_nego_period) * 10 +
+		dcb->min_nego_period / 2) / dcb->min_nego_period);
+
+	if (!(srb->state & SRB_DO_SYNC_NEGO)) {
+		/* Reply with corrected SDTR Message */
+		dprintkl(KERN_DEBUG, "msgin_set_sync: answer w/%ins %i\n",
+			srb->msgin_buf[3] << 2, srb->msgin_buf[4]);
+
+		memcpy(srb->msgout_buf, srb->msgin_buf, 5);
+		srb->msg_count = 5;
+		DC395x_ENABLE_MSGOUT;
+		dcb->sync_mode |= SYNC_NEGO_DONE;
+	} else {
+		if ((dcb->sync_mode & WIDE_NEGO_ENABLE)
+		    && !(dcb->sync_mode & WIDE_NEGO_DONE)) {
+			build_wdtr(acb, dcb, srb);
+			DC395x_ENABLE_MSGOUT;
+			dprintkdbg(DBG_0, "msgin_set_sync: Also try WDTR\n");
+		}
+	}
+	srb->state &= ~SRB_DO_SYNC_NEGO;
+	dcb->sync_mode |= SYNC_NEGO_DONE | SYNC_NEGO_ENABLE;
+
+	reprogram_regs(acb, dcb);
+}
+
+
+static inline void msgin_set_nowide(struct AdapterCtlBlk *acb,
+		struct ScsiReqBlk *srb)
+{
+	struct DeviceCtlBlk *dcb = srb->dcb;
+	dprintkdbg(DBG_1, "msgin_set_nowide: <%02i>\n", dcb->target_id);
+
+	dcb->sync_period &= ~WIDE_SYNC;
+	dcb->sync_mode &= ~(WIDE_NEGO_ENABLE);
+	dcb->sync_mode |= WIDE_NEGO_DONE;
+	srb->state &= ~SRB_DO_WIDE_NEGO;
+	reprogram_regs(acb, dcb);
+	if ((dcb->sync_mode & SYNC_NEGO_ENABLE)
+	    && !(dcb->sync_mode & SYNC_NEGO_DONE)) {
+		build_sdtr(acb, dcb, srb);
+		DC395x_ENABLE_MSGOUT;
+		dprintkdbg(DBG_0, "msgin_set_nowide: Rejected. Try SDTR anyway\n");
+	}
+}
+
+static void msgin_set_wide(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+	struct DeviceCtlBlk *dcb = srb->dcb;
+	u8 wide = (dcb->dev_mode & NTC_DO_WIDE_NEGO
+		   && acb->config & HCC_WIDE_CARD) ? 1 : 0;
+	dprintkdbg(DBG_1, "msgin_set_wide: <%02i>\n", dcb->target_id);
+
+	if (srb->msgin_buf[3] > wide)
+		srb->msgin_buf[3] = wide;
+	/* Completed */
+	if (!(srb->state & SRB_DO_WIDE_NEGO)) {
+		dprintkl(KERN_DEBUG,
+			"msgin_set_wide: Wide nego initiated <%02i>\n",
+			dcb->target_id);
+		memcpy(srb->msgout_buf, srb->msgin_buf, 4);
+		srb->msg_count = 4;
+		srb->state |= SRB_DO_WIDE_NEGO;
+		DC395x_ENABLE_MSGOUT;
+	}
+
+	dcb->sync_mode |= (WIDE_NEGO_ENABLE | WIDE_NEGO_DONE);
+	if (srb->msgin_buf[3] > 0)
+		dcb->sync_period |= WIDE_SYNC;
+	else
+		dcb->sync_period &= ~WIDE_SYNC;
+	srb->state &= ~SRB_DO_WIDE_NEGO;
+	/*dcb->sync_mode &= ~(WIDE_NEGO_ENABLE+WIDE_NEGO_DONE); */
+	dprintkdbg(DBG_1,
+		"msgin_set_wide: Wide (%i bit) negotiated <%02i>\n",
+		(8 << srb->msgin_buf[3]), dcb->target_id);
+	reprogram_regs(acb, dcb);
+	if ((dcb->sync_mode & SYNC_NEGO_ENABLE)
+	    && !(dcb->sync_mode & SYNC_NEGO_DONE)) {
+		build_sdtr(acb, dcb, srb);
+		DC395x_ENABLE_MSGOUT;
+		dprintkdbg(DBG_0, "msgin_set_wide: Also try SDTR.\n");
+	}
+}
+
+
+/*
+ * extended message codes:
+ *
+ *	code	description
+ *
+ *	02h	Reserved
+ *	00h	MODIFY DATA  POINTER
+ *	01h	SYNCHRONOUS DATA TRANSFER REQUEST
+ *	03h	WIDE DATA TRANSFER REQUEST
+ *   04h - 7Fh	Reserved
+ *   80h - FFh	Vendor specific
+ */
+static void msgin_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	struct DeviceCtlBlk *dcb = acb->active_dcb;
+	dprintkdbg(DBG_0, "msgin_phase0: (pid#%li)\n", srb->cmd->pid);
+
+	srb->msgin_buf[acb->msg_len++] = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+	if (msgin_completed(srb->msgin_buf, acb->msg_len)) {
+		/* Now eval the msg */
+		switch (srb->msgin_buf[0]) {
+		case DISCONNECT:
+			srb->state = SRB_DISCONNECT;
+			break;
+
+		case SIMPLE_QUEUE_TAG:
+		case HEAD_OF_QUEUE_TAG:
+		case ORDERED_QUEUE_TAG:
+			srb =
+			    msgin_qtag(acb, dcb,
+					      srb->msgin_buf[1]);
+			break;
+
+		case MESSAGE_REJECT:
+			DC395x_write16(acb, TRM_S1040_SCSI_CONTROL,
+				       DO_CLRATN | DO_DATALATCH);
+			/* A sync nego message was rejected ! */
+			if (srb->state & SRB_DO_SYNC_NEGO) {
+				msgin_set_async(acb, srb);
+				break;
+			}
+			/* A wide nego message was rejected ! */
+			if (srb->state & SRB_DO_WIDE_NEGO) {
+				msgin_set_nowide(acb, srb);
+				break;
+			}
+			enable_msgout_abort(acb, srb);
+			/*srb->state |= SRB_ABORT_SENT */
+			break;
+
+		case EXTENDED_MESSAGE:
+			/* SDTR */
+			if (srb->msgin_buf[1] == 3
+			    && srb->msgin_buf[2] == EXTENDED_SDTR) {
+				msgin_set_sync(acb, srb);
+				break;
+			}
+			/* WDTR */
+			if (srb->msgin_buf[1] == 2
+			    && srb->msgin_buf[2] == EXTENDED_WDTR
+			    && srb->msgin_buf[3] <= 2) { /* sanity check ... */
+				msgin_set_wide(acb, srb);
+				break;
+			}
+			msgin_reject(acb, srb);
+			break;
+
+		case MSG_IGNOREWIDE:
+			/* Discard  wide residual */
+			dprintkdbg(DBG_0, "msgin_phase0: Ignore Wide Residual!\n");
+			break;
+
+		case COMMAND_COMPLETE:
+			/* nothing has to be done */
+			break;
+
+		case SAVE_POINTERS:
+			/*
+			 * SAVE POINTER may be ignored as we have the struct
+			 * ScsiReqBlk* associated with the scsi command.
+			 */
+			dprintkdbg(DBG_0, "msgin_phase0: (pid#%li) "
+				"SAVE POINTER rem=%i Ignore\n",
+				srb->cmd->pid, srb->total_xfer_length);
+			break;
+
+		case RESTORE_POINTERS:
+			dprintkdbg(DBG_0, "msgin_phase0: RESTORE POINTER. Ignore\n");
+			break;
+
+		case ABORT:
+			dprintkdbg(DBG_0, "msgin_phase0: (pid#%li) "
+				"<%02i-%i> ABORT msg\n",
+				srb->cmd->pid, dcb->target_id,
+				dcb->target_lun);
+			dcb->flag |= ABORT_DEV_;
+			enable_msgout_abort(acb, srb);
+			break;
+
+		default:
+			/* reject unknown messages */
+			if (srb->msgin_buf[0] & IDENTIFY_BASE) {
+				dprintkdbg(DBG_0, "msgin_phase0: Identify msg\n");
+				srb->msg_count = 1;
+				srb->msgout_buf[0] = dcb->identify_msg;
+				DC395x_ENABLE_MSGOUT;
+				srb->state |= SRB_MSGOUT;
+				/*break; */
+			}
+			msgin_reject(acb, srb);
+		}
+
+		/* Clear counter and MsgIn state */
+		srb->state &= ~SRB_MSGIN;
+		acb->msg_len = 0;
+	}
+	*pscsi_status = PH_BUS_FREE;
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);	/* it's important ... you know! */
+	DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT);
+}
+
+
+static void msgin_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+	dprintkdbg(DBG_0, "msgin_phase1: (pid#%li)\n", srb->cmd->pid);
+	clear_fifo(acb, "msgin_phase1");
+	DC395x_write32(acb, TRM_S1040_SCSI_COUNTER, 1);
+	if (!(srb->state & SRB_MSGIN)) {
+		srb->state &= ~SRB_DISCONNECT;
+		srb->state |= SRB_MSGIN;
+	}
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);	/* it's important for atn stop */
+	/* SCSI command */
+	DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_FIFO_IN);
+}
+
+
+static void nop0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+}
+
+
+static void nop1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
+		u16 *pscsi_status)
+{
+}
+
+
+static void set_xfer_rate(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb)
+{
+	struct DeviceCtlBlk *i;
+
+	/* set all lun device's  period, offset */
+	if (dcb->identify_msg & 0x07)
+		return;
+
+	if (acb->scan_devices) {
+		current_sync_offset = dcb->sync_offset;
+		return;
+	}
+
+	list_for_each_entry(i, &acb->dcb_list, list)
+		if (i->target_id == dcb->target_id) {
+			i->sync_period = dcb->sync_period;
+			i->sync_offset = dcb->sync_offset;
+			i->sync_mode = dcb->sync_mode;
+			i->min_nego_period = dcb->min_nego_period;
+		}
+}
+
+
+static void disconnect(struct AdapterCtlBlk *acb)
+{
+	struct DeviceCtlBlk *dcb = acb->active_dcb;
+	struct ScsiReqBlk *srb;
+
+	if (!dcb) {
+		dprintkl(KERN_ERR, "disconnect: No such device\n");
+		udelay(500);
+		/* Suspend queue for a while */
+		acb->scsi_host->last_reset =
+		    jiffies + HZ / 2 +
+		    HZ * acb->eeprom.delay_time;
+		clear_fifo(acb, "disconnectEx");
+		DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT);
+		return;
+	}
+	srb = dcb->active_srb;
+	acb->active_dcb = NULL;
+	dprintkdbg(DBG_0, "disconnect: (pid#%li)\n", srb->cmd->pid);
+
+	srb->scsi_phase = PH_BUS_FREE;	/* initial phase */
+	clear_fifo(acb, "disconnect");
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT);
+	if (srb->state & SRB_UNEXPECT_RESEL) {
+		dprintkl(KERN_ERR,
+			"disconnect: Unexpected reselection <%02i-%i>\n",
+			dcb->target_id, dcb->target_lun);
+		srb->state = 0;
+		waiting_process_next(acb);
+	} else if (srb->state & SRB_ABORT_SENT) {
+		dcb->flag &= ~ABORT_DEV_;
+		acb->scsi_host->last_reset = jiffies + HZ / 2 + 1;
+		dprintkl(KERN_ERR, "disconnect: SRB_ABORT_SENT\n");
+		doing_srb_done(acb, DID_ABORT, srb->cmd, 1);
+		waiting_process_next(acb);
+	} else {
+		if ((srb->state & (SRB_START_ + SRB_MSGOUT))
+		    || !(srb->
+			 state & (SRB_DISCONNECT + SRB_COMPLETED))) {
+			/*
+			 * Selection time out 
+			 * SRB_START_ || SRB_MSGOUT || (!SRB_DISCONNECT && !SRB_COMPLETED)
+			 */
+			/* Unexp. Disc / Sel Timeout */
+			if (srb->state != SRB_START_
+			    && srb->state != SRB_MSGOUT) {
+				srb->state = SRB_READY;
+				dprintkl(KERN_DEBUG,
+					"disconnect: (pid#%li) Unexpected\n",
+					srb->cmd->pid);
+				srb->target_status = SCSI_STAT_SEL_TIMEOUT;
+				goto disc1;
+			} else {
+				/* Normal selection timeout */
+				dprintkdbg(DBG_KG, "disconnect: (pid#%li) "
+					"<%02i-%i> SelTO\n", srb->cmd->pid,
+					dcb->target_id, dcb->target_lun);
+				if (srb->retry_count++ > DC395x_MAX_RETRIES
+				    || acb->scan_devices) {
+					srb->target_status =
+					    SCSI_STAT_SEL_TIMEOUT;
+					goto disc1;
+				}
+				free_tag(dcb, srb);
+				srb_going_to_waiting_move(dcb, srb);
+				dprintkdbg(DBG_KG,
+					"disconnect: (pid#%li) Retry\n",
+					srb->cmd->pid);
+				waiting_set_timer(acb, HZ / 20);
+			}
+		} else if (srb->state & SRB_DISCONNECT) {
+			u8 bval = DC395x_read8(acb, TRM_S1040_SCSI_SIGNAL);
+			/*
+			 * SRB_DISCONNECT (This is what we expect!)
+			 */
+			if (bval & 0x40) {
+				dprintkdbg(DBG_0, "disconnect: SCSI bus stat "
+					" 0x%02x: ACK set! Other controllers?\n",
+					bval);
+				/* It could come from another initiator, therefore don't do much ! */
+			} else
+				waiting_process_next(acb);
+		} else if (srb->state & SRB_COMPLETED) {
+		      disc1:
+			/*
+			 ** SRB_COMPLETED
+			 */
+			free_tag(dcb, srb);
+			dcb->active_srb = NULL;
+			srb->state = SRB_FREE;
+			srb_done(acb, dcb, srb);
+		}
+	}
+}
+
+
+static void reselect(struct AdapterCtlBlk *acb)
+{
+	struct DeviceCtlBlk *dcb = acb->active_dcb;
+	struct ScsiReqBlk *srb = NULL;
+	u16 rsel_tar_lun_id;
+	u8 id, lun;
+	u8 arblostflag = 0;
+	dprintkdbg(DBG_0, "reselect: acb=%p\n", acb);
+
+	clear_fifo(acb, "reselect");
+	/*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT | DO_DATALATCH); */
+	/* Read Reselected Target ID and LUN */
+	rsel_tar_lun_id = DC395x_read16(acb, TRM_S1040_SCSI_TARGETID);
+	if (dcb) {		/* Arbitration lost but Reselection win */
+		srb = dcb->active_srb;
+		if (!srb) {
+			dprintkl(KERN_DEBUG, "reselect: Arb lost Resel won, "
+				"but active_srb == NULL\n");
+			DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);	/* it's important for atn stop */
+			return;
+		}
+		/* Why the if ? */
+		if (!acb->scan_devices) {
+			dprintkdbg(DBG_KG, "reselect: (pid#%li) <%02i-%i> "
+				"Arb lost but Resel win rsel=%i stat=0x%04x\n",
+				srb->cmd->pid, dcb->target_id,
+				dcb->target_lun, rsel_tar_lun_id,
+				DC395x_read16(acb, TRM_S1040_SCSI_STATUS));
+			arblostflag = 1;
+			/*srb->state |= SRB_DISCONNECT; */
+
+			srb->state = SRB_READY;
+			free_tag(dcb, srb);
+			srb_going_to_waiting_move(dcb, srb);
+			waiting_set_timer(acb, HZ / 20);
+
+			/* return; */
+		}
+	}
+	/* Read Reselected Target Id and LUN */
+	if (!(rsel_tar_lun_id & (IDENTIFY_BASE << 8)))
+		dprintkl(KERN_DEBUG, "reselect: Expects identify msg. "
+			"Got %i!\n", rsel_tar_lun_id);
+	id = rsel_tar_lun_id & 0xff;
+	lun = (rsel_tar_lun_id >> 8) & 7;
+	dcb = find_dcb(acb, id, lun);
+	if (!dcb) {
+		dprintkl(KERN_ERR, "reselect: From non existent device "
+			"<%02i-%i>\n", id, lun);
+		DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);	/* it's important for atn stop */
+		return;
+	}
+	acb->active_dcb = dcb;
+
+	if (!(dcb->dev_mode & NTC_DO_DISCONNECT))
+		dprintkl(KERN_DEBUG, "reselect: in spite of forbidden "
+			"disconnection? <%02i-%i>\n",
+			dcb->target_id, dcb->target_lun);
+
+	if (dcb->sync_mode & EN_TAG_QUEUEING /*&& !arblostflag */) {
+		srb = acb->tmp_srb;
+		dcb->active_srb = srb;
+	} else {
+		/* There can be only one! */
+		srb = dcb->active_srb;
+		if (!srb || !(srb->state & SRB_DISCONNECT)) {
+			/*
+			 * abort command
+			 */
+			dprintkl(KERN_DEBUG,
+				"reselect: w/o disconnected cmds <%02i-%i>\n",
+				dcb->target_id, dcb->target_lun);
+			srb = acb->tmp_srb;
+			srb->state = SRB_UNEXPECT_RESEL;
+			dcb->active_srb = srb;
+			enable_msgout_abort(acb, srb);
+		} else {
+			if (dcb->flag & ABORT_DEV_) {
+				/*srb->state = SRB_ABORT_SENT; */
+				enable_msgout_abort(acb, srb);
+			} else
+				srb->state = SRB_DATA_XFER;
+
+		}
+	}
+	srb->scsi_phase = PH_BUS_FREE;	/* initial phase */
+
+	/* Program HA ID, target ID, period and offset */
+	dprintkdbg(DBG_0, "reselect: select <%i>\n", dcb->target_id);
+	DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id);	/* host   ID */
+	DC395x_write8(acb, TRM_S1040_SCSI_TARGETID, dcb->target_id);		/* target ID */
+	DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, dcb->sync_offset);		/* offset    */
+	DC395x_write8(acb, TRM_S1040_SCSI_SYNC, dcb->sync_period);		/* sync period, wide */
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_DATALATCH);		/* it's important for atn stop */
+	/* SCSI command */
+	DC395x_write8(acb, TRM_S1040_SCSI_COMMAND, SCMD_MSGACCEPT);
+}
+
+
+static inline u8 tagq_blacklist(char *name)
+{
+#ifndef DC395x_NO_TAGQ
+#if 0
+	u8 i;
+	for (i = 0; i < BADDEVCNT; i++)
+		if (memcmp(name, DC395x_baddevname1[i], 28) == 0)
+			return 1;
+#endif
+	return 0;
+#else
+	return 1;
+#endif
+}
+
+
+static void disc_tagq_set(struct DeviceCtlBlk *dcb, struct ScsiInqData *ptr)
+{
+	/* Check for SCSI format (ANSI and Response data format) */
+	if ((ptr->Vers & 0x07) >= 2 || (ptr->RDF & 0x0F) == 2) {
+		if ((ptr->Flags & SCSI_INQ_CMDQUEUE)
+		    && (dcb->dev_mode & NTC_DO_TAG_QUEUEING) &&
+		    /*(dcb->dev_mode & NTC_DO_DISCONNECT) */
+		    /* ((dcb->dev_type == TYPE_DISK) 
+		       || (dcb->dev_type == TYPE_MOD)) && */
+		    !tagq_blacklist(((char *)ptr) + 8)) {
+			if (dcb->max_command == 1)
+				dcb->max_command =
+				    dcb->acb->tag_max_num;
+			dcb->sync_mode |= EN_TAG_QUEUEING;
+			/*dcb->tag_mask = 0; */
+		} else
+			dcb->max_command = 1;
+	}
+}
+
+
+static void add_dev(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+		struct ScsiInqData *ptr)
+{
+	u8 bval1 = ptr->DevType & SCSI_DEVTYPE;
+	dcb->dev_type = bval1;
+	/* if (bval1 == TYPE_DISK || bval1 == TYPE_MOD) */
+	disc_tagq_set(dcb, ptr);
+}
+
+
+/* unmap mapped pci regions from SRB */
+static void pci_unmap_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
+{
+	struct scsi_cmnd *cmd = srb->cmd;
+	enum dma_data_direction dir = cmd->sc_data_direction;
+	if (cmd->use_sg && dir != PCI_DMA_NONE) {
+		int i;
+		/* unmap DC395x SG list */
+		dprintkdbg(DBG_SG, "pci_unmap_srb: list=%08x(%05x)\n",
+			srb->sg_bus_addr, SEGMENTX_LEN);
+		pci_unmap_single(acb->dev, srb->sg_bus_addr,
+				 SEGMENTX_LEN,
+				 PCI_DMA_TODEVICE);
+		dprintkdbg(DBG_SG, "pci_unmap_srb: segs=%i buffer=%p\n",
+			cmd->use_sg, cmd->request_buffer);
+		/* unmap the sg segments */
+		for (i = 0; i < srb->sg_count; i++)
+			kunmap(virt_to_page(srb->virt_map[i]));
+		pci_unmap_sg(acb->dev,
+			     (struct scatterlist *)cmd->request_buffer,
+			     cmd->use_sg, dir);
+	} else if (cmd->request_buffer && dir != PCI_DMA_NONE) {
+		dprintkdbg(DBG_SG, "pci_unmap_srb: buffer=%08x(%05x)\n",
+			srb->segment_x[0].address, cmd->request_bufflen);
+		pci_unmap_single(acb->dev, srb->segment_x[0].address,
+				 cmd->request_bufflen, dir);
+	}
+}
+
+
+/* unmap mapped pci sense buffer from SRB */
+static void pci_unmap_srb_sense(struct AdapterCtlBlk *acb,
+		struct ScsiReqBlk *srb)
+{
+	if (!(srb->flag & AUTO_REQSENSE))
+		return;
+	/* Unmap sense buffer */
+	dprintkdbg(DBG_SG, "pci_unmap_srb_sense: buffer=%08x\n",
+	       srb->segment_x[0].address);
+	pci_unmap_single(acb->dev, srb->segment_x[0].address,
+			 srb->segment_x[0].length, PCI_DMA_FROMDEVICE);
+	/* Restore SG stuff */
+	srb->total_xfer_length = srb->xferred;
+	srb->segment_x[0].address =
+	    srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].address;
+	srb->segment_x[0].length =
+	    srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].length;
+}
+
+
+/*
+ * Complete execution of a SCSI command
+ * Signal completion to the generic SCSI driver  
+ */
+static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb)
+{
+	u8 tempcnt, status;
+	struct scsi_cmnd *cmd = srb->cmd;
+	struct ScsiInqData *ptr;
+	enum dma_data_direction dir = cmd->sc_data_direction;
+
+	if (cmd->use_sg) {
+		struct scatterlist* sg = (struct scatterlist *)cmd->request_buffer;
+		ptr = (struct ScsiInqData *)(srb->virt_map[0] + sg->offset);
+	} else {
+		ptr = (struct ScsiInqData *)(cmd->request_buffer);
+	}
+
+	dprintkdbg(DBG_1, "srb_done: (pid#%li) <%02i-%i>\n", srb->cmd->pid,
+		srb->cmd->device->id, srb->cmd->device->lun);
+	dprintkdbg(DBG_SG, "srb_done: srb=%p sg=%i(%i/%i) buf=%p addr=%p\n",
+		srb, cmd->use_sg, srb->sg_index, srb->sg_count,
+		cmd->request_buffer, ptr);
+	status = srb->target_status;
+	if (srb->flag & AUTO_REQSENSE) {
+		dprintkdbg(DBG_0, "srb_done: AUTO_REQSENSE1\n");
+		pci_unmap_srb_sense(acb, srb);
+		/*
+		 ** target status..........................
+		 */
+		srb->flag &= ~AUTO_REQSENSE;
+		srb->adapter_status = 0;
+		srb->target_status = CHECK_CONDITION << 1;
+		if (debug_enabled(DBG_1)) {
+			switch (cmd->sense_buffer[2] & 0x0f) {
+			case NOT_READY:
+				dprintkl(KERN_DEBUG,
+				     "ReqSense: NOT_READY cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
+				     cmd->cmnd[0], dcb->target_id,
+				     dcb->target_lun, status, acb->scan_devices);
+				break;
+			case UNIT_ATTENTION:
+				dprintkl(KERN_DEBUG,
+				     "ReqSense: UNIT_ATTENTION cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
+				     cmd->cmnd[0], dcb->target_id,
+				     dcb->target_lun, status, acb->scan_devices);
+				break;
+			case ILLEGAL_REQUEST:
+				dprintkl(KERN_DEBUG,
+				     "ReqSense: ILLEGAL_REQUEST cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
+				     cmd->cmnd[0], dcb->target_id,
+				     dcb->target_lun, status, acb->scan_devices);
+				break;
+			case MEDIUM_ERROR:
+				dprintkl(KERN_DEBUG,
+				     "ReqSense: MEDIUM_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
+				     cmd->cmnd[0], dcb->target_id,
+				     dcb->target_lun, status, acb->scan_devices);
+				break;
+			case HARDWARE_ERROR:
+				dprintkl(KERN_DEBUG,
+				     "ReqSense: HARDWARE_ERROR cmnd=0x%02x <%02i-%i> stat=%i scan=%i ",
+				     cmd->cmnd[0], dcb->target_id,
+				     dcb->target_lun, status, acb->scan_devices);
+				break;
+			}
+			if (cmd->sense_buffer[7] >= 6)
+				printk("sense=0x%02x ASC=0x%02x ASCQ=0x%02x "
+					"(0x%08x 0x%08x)\n",
+					cmd->sense_buffer[2], cmd->sense_buffer[12],
+					cmd->sense_buffer[13],
+					*((unsigned int *)(cmd->sense_buffer + 3)),
+					*((unsigned int *)(cmd->sense_buffer + 8)));
+			else
+				printk("sense=0x%02x No ASC/ASCQ (0x%08x)\n",
+					cmd->sense_buffer[2],
+					*((unsigned int *)(cmd->sense_buffer + 3)));
+		}
+
+		if (status == (CHECK_CONDITION << 1)) {
+			cmd->result = DID_BAD_TARGET << 16;
+			goto ckc_e;
+		}
+		dprintkdbg(DBG_0, "srb_done: AUTO_REQSENSE2\n");
+
+		if (srb->total_xfer_length
+		    && srb->total_xfer_length >= cmd->underflow)
+			cmd->result =
+			    MK_RES_LNX(DRIVER_SENSE, DID_OK,
+				       srb->end_message, CHECK_CONDITION);
+		/*SET_RES_DID(cmd->result,DID_OK) */
+		else
+			cmd->result =
+			    MK_RES_LNX(DRIVER_SENSE, DID_OK,
+				       srb->end_message, CHECK_CONDITION);
+
+		goto ckc_e;
+	}
+
+/*************************************************************/
+	if (status) {
+		/*
+		 * target status..........................
+		 */
+		if (status_byte(status) == CHECK_CONDITION) {
+			request_sense(acb, dcb, srb);
+			return;
+		} else if (status_byte(status) == QUEUE_FULL) {
+			tempcnt = (u8)list_size(&dcb->srb_going_list);
+			dprintkl(KERN_INFO, "QUEUE_FULL for dev <%02i-%i> with %i cmnds\n",
+			     dcb->target_id, dcb->target_lun, tempcnt);
+			if (tempcnt > 1)
+				tempcnt--;
+			dcb->max_command = tempcnt;
+			free_tag(dcb, srb);
+			srb_going_to_waiting_move(dcb, srb);
+			waiting_set_timer(acb, HZ / 20);
+			srb->adapter_status = 0;
+			srb->target_status = 0;
+			return;
+		} else if (status == SCSI_STAT_SEL_TIMEOUT) {
+			srb->adapter_status = H_SEL_TIMEOUT;
+			srb->target_status = 0;
+			cmd->result = DID_NO_CONNECT << 16;
+		} else {
+			srb->adapter_status = 0;
+			SET_RES_DID(cmd->result, DID_ERROR);
+			SET_RES_MSG(cmd->result, srb->end_message);
+			SET_RES_TARGET(cmd->result, status);
+
+		}
+	} else {
+		/*
+		 ** process initiator status..........................
+		 */
+		status = srb->adapter_status;
+		if (status & H_OVER_UNDER_RUN) {
+			srb->target_status = 0;
+			SET_RES_DID(cmd->result, DID_OK);
+			SET_RES_MSG(cmd->result, srb->end_message);
+		} else if (srb->status & PARITY_ERROR) {
+			SET_RES_DID(cmd->result, DID_PARITY);
+			SET_RES_MSG(cmd->result, srb->end_message);
+		} else {	/* No error */
+
+			srb->adapter_status = 0;
+			srb->target_status = 0;
+			SET_RES_DID(cmd->result, DID_OK);
+		}
+	}
+
+	if (dir != PCI_DMA_NONE) {
+		if (cmd->use_sg)
+			pci_dma_sync_sg_for_cpu(acb->dev,
+					(struct scatterlist *)cmd->
+					request_buffer, cmd->use_sg, dir);
+		else if (cmd->request_buffer)
+			pci_dma_sync_single_for_cpu(acb->dev,
+					    srb->segment_x[0].address,
+					    cmd->request_bufflen, dir);
+	}
+
+	if ((cmd->result & RES_DID) == 0 && cmd->cmnd[0] == INQUIRY
+	    && cmd->cmnd[2] == 0 && cmd->request_bufflen >= 8
+	    && dir != PCI_DMA_NONE && ptr && (ptr->Vers & 0x07) >= 2)
+		dcb->inquiry7 = ptr->Flags;
+/* Check Error Conditions */
+      ckc_e:
+
+	/*if( srb->cmd->cmnd[0] == INQUIRY && */
+	/*  (host_byte(cmd->result) == DID_OK || status_byte(cmd->result) & CHECK_CONDITION) ) */
+	if (cmd->cmnd[0] == INQUIRY && (cmd->result == (DID_OK << 16)
+					 || status_byte(cmd->
+							result) &
+					 CHECK_CONDITION)) {
+
+		if (!dcb->init_tcq_flag) {
+			add_dev(acb, dcb, ptr);
+			dcb->init_tcq_flag = 1;
+		}
+
+	}
+
+
+	/* Here is the info for Doug Gilbert's sg3 ... */
+	cmd->resid = srb->total_xfer_length;
+	/* This may be interpreted by sb. or not ... */
+	cmd->SCp.this_residual = srb->total_xfer_length;
+	cmd->SCp.buffers_residual = 0;
+	if (debug_enabled(DBG_KG)) {
+		if (srb->total_xfer_length)
+			dprintkdbg(DBG_KG, "srb_done: (pid#%li) <%02i-%i> "
+				"cmnd=0x%02x Missed %i bytes\n",
+				cmd->pid, cmd->device->id, cmd->device->lun,
+				cmd->cmnd[0], srb->total_xfer_length);
+	}
+
+	srb_going_remove(dcb, srb);
+	/* Add to free list */
+	if (srb == acb->tmp_srb)
+		dprintkl(KERN_ERR, "srb_done: ERROR! Completed cmd with tmp_srb\n");
+	else {
+		dprintkdbg(DBG_0, "srb_done: (pid#%li) done result=0x%08x\n",
+			cmd->pid, cmd->result);
+		srb_free_insert(acb, srb);
+	}
+	pci_unmap_srb(acb, srb);
+
+	cmd->scsi_done(cmd);
+	waiting_process_next(acb);
+}
+
+
+/* abort all cmds in our queues */
+static void doing_srb_done(struct AdapterCtlBlk *acb, u8 did_flag,
+		struct scsi_cmnd *cmd, u8 force)
+{
+	struct DeviceCtlBlk *dcb;
+	dprintkl(KERN_INFO, "doing_srb_done: pids ");
+
+	list_for_each_entry(dcb, &acb->dcb_list, list) {
+		struct ScsiReqBlk *srb;
+		struct ScsiReqBlk *tmp;
+		struct scsi_cmnd *p;
+
+		list_for_each_entry_safe(srb, tmp, &dcb->srb_going_list, list) {
+			enum dma_data_direction dir;
+			int result;
+
+			p = srb->cmd;
+			dir = p->sc_data_direction;
+			result = MK_RES(0, did_flag, 0, 0);
+			printk("G:%li(%02i-%i) ", p->pid,
+			       p->device->id, p->device->lun);
+			srb_going_remove(dcb, srb);
+			free_tag(dcb, srb);
+			srb_free_insert(acb, srb);
+			p->result = result;
+			pci_unmap_srb_sense(acb, srb);
+			pci_unmap_srb(acb, srb);
+			if (force) {
+				/* For new EH, we normally don't need to give commands back,
+				 * as they all complete or all time out */
+				p->scsi_done(p);
+			}
+		}
+		if (!list_empty(&dcb->srb_going_list))
+			dprintkl(KERN_DEBUG, 
+			       "How could the ML send cmnds to the Going queue? <%02i-%i>\n",
+			       dcb->target_id, dcb->target_lun);
+		if (dcb->tag_mask)
+			dprintkl(KERN_DEBUG,
+			       "tag_mask for <%02i-%i> should be empty, is %08x!\n",
+			       dcb->target_id, dcb->target_lun,
+			       dcb->tag_mask);
+
+		/* Waiting queue */
+		list_for_each_entry_safe(srb, tmp, &dcb->srb_waiting_list, list) {
+			int result;
+			p = srb->cmd;
+
+			result = MK_RES(0, did_flag, 0, 0);
+			printk("W:%li<%02i-%i>", p->pid, p->device->id,
+			       p->device->lun);
+			srb_waiting_remove(dcb, srb);
+			srb_free_insert(acb, srb);
+			p->result = result;
+			pci_unmap_srb_sense(acb, srb);
+			pci_unmap_srb(acb, srb);
+			if (force) {
+				/* For new EH, we normally don't need to give commands back,
+				 * as they all complete or all time out */
+				cmd->scsi_done(cmd);
+			}
+		}
+		if (!list_empty(&dcb->srb_waiting_list))
+			dprintkl(KERN_DEBUG, "ML queued %i cmnds again to <%02i-%i>\n",
+			     list_size(&dcb->srb_waiting_list), dcb->target_id,
+			     dcb->target_lun);
+		dcb->flag &= ~ABORT_DEV_;
+	}
+	printk("\n");
+}
+
+
+static void reset_scsi_bus(struct AdapterCtlBlk *acb)
+{
+	dprintkdbg(DBG_0, "reset_scsi_bus: acb=%p\n", acb);
+	acb->acb_flag |= RESET_DEV;	/* RESET_DETECT, RESET_DONE, RESET_DEV */
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_RSTSCSI);
+
+	while (!(DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS) & INT_SCSIRESET))
+		/* nothing */;
+}
+
+
+static void set_basic_config(struct AdapterCtlBlk *acb)
+{
+	u8 bval;
+	u16 wval;
+	DC395x_write8(acb, TRM_S1040_SCSI_TIMEOUT, acb->sel_timeout);
+	if (acb->config & HCC_PARITY)
+		bval = PHASELATCH | INITIATOR | BLOCKRST | PARITYCHECK;
+	else
+		bval = PHASELATCH | INITIATOR | BLOCKRST;
+
+	DC395x_write8(acb, TRM_S1040_SCSI_CONFIG0, bval);
+
+	/* program configuration 1: Act_Neg (+ Act_Neg_Enh? + Fast_Filter? + DataDis?) */
+	DC395x_write8(acb, TRM_S1040_SCSI_CONFIG1, 0x03);	/* was 0x13: default */
+	/* program Host ID                  */
+	DC395x_write8(acb, TRM_S1040_SCSI_HOSTID, acb->scsi_host->this_id);
+	/* set ansynchronous transfer       */
+	DC395x_write8(acb, TRM_S1040_SCSI_OFFSET, 0x00);
+	/* Turn LED control off */
+	wval = DC395x_read16(acb, TRM_S1040_GEN_CONTROL) & 0x7F;
+	DC395x_write16(acb, TRM_S1040_GEN_CONTROL, wval);
+	/* DMA config          */
+	wval = DC395x_read16(acb, TRM_S1040_DMA_CONFIG) & ~DMA_FIFO_CTRL;
+	wval |=
+	    DMA_FIFO_HALF_HALF | DMA_ENHANCE /*| DMA_MEM_MULTI_READ */ ;
+	DC395x_write16(acb, TRM_S1040_DMA_CONFIG, wval);
+	/* Clear pending interrupt status */
+	DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
+	/* Enable SCSI interrupt    */
+	DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x7F);
+	DC395x_write8(acb, TRM_S1040_DMA_INTEN, EN_SCSIINTR | EN_DMAXFERERROR
+		      /*| EN_DMAXFERABORT | EN_DMAXFERCOMP | EN_FORCEDMACOMP */
+		      );
+}
+
+
+static void scsi_reset_detect(struct AdapterCtlBlk *acb)
+{
+	dprintkl(KERN_INFO, "scsi_reset_detect: acb=%p\n", acb);
+	/* delay half a second */
+	if (timer_pending(&acb->waiting_timer))
+		del_timer(&acb->waiting_timer);
+
+	DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE);
+	DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE);
+	/*DC395x_write8(acb, TRM_S1040_DMA_CONTROL,STOPDMAXFER); */
+	udelay(500);
+	/* Maybe we locked up the bus? Then lets wait even longer ... */
+	acb->scsi_host->last_reset =
+	    jiffies + 5 * HZ / 2 +
+	    HZ * acb->eeprom.delay_time;
+
+	clear_fifo(acb, "scsi_reset_detect");
+	set_basic_config(acb);
+	/*1.25 */
+	/*DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_HWRESELECT); */
+
+	if (acb->acb_flag & RESET_DEV) {	/* RESET_DETECT, RESET_DONE, RESET_DEV */
+		acb->acb_flag |= RESET_DONE;
+	} else {
+		acb->acb_flag |= RESET_DETECT;
+		reset_dev_param(acb);
+		doing_srb_done(acb, DID_RESET, NULL, 1);
+		/*DC395x_RecoverSRB( acb ); */
+		acb->active_dcb = NULL;
+		acb->acb_flag = 0;
+		waiting_process_next(acb);
+	}
+}
+
+
+static void request_sense(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
+		struct ScsiReqBlk *srb)
+{
+	struct scsi_cmnd *cmd = srb->cmd;
+	dprintkdbg(DBG_1, "request_sense: (pid#%li) <%02i-%i>\n",
+		cmd->pid, cmd->device->id, cmd->device->lun);
+
+	srb->flag |= AUTO_REQSENSE;
+	srb->adapter_status = 0;
+	srb->target_status = 0;
+
+	/* KG: Can this prevent crap sense data ? */
+	memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
+
+	/* Save some data */
+	srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].address =
+	    srb->segment_x[0].address;
+	srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].length =
+	    srb->segment_x[0].length;
+	srb->xferred = srb->total_xfer_length;
+	/* srb->segment_x : a one entry of S/G list table */
+	srb->total_xfer_length = sizeof(cmd->sense_buffer);
+	srb->segment_x[0].length = sizeof(cmd->sense_buffer);
+	/* Map sense buffer */
+	srb->segment_x[0].address =
+	    pci_map_single(acb->dev, cmd->sense_buffer,
+			   sizeof(cmd->sense_buffer), PCI_DMA_FROMDEVICE);
+	dprintkdbg(DBG_SG, "request_sense: map buffer %p->%08x(%05x)\n",
+	       cmd->sense_buffer, srb->segment_x[0].address,
+	       sizeof(cmd->sense_buffer));
+	srb->sg_count = 1;
+	srb->sg_index = 0;
+
+	if (start_scsi(acb, dcb, srb)) {	/* Should only happen, if sb. else grabs the bus */
+		dprintkl(KERN_DEBUG,
+			"request_sense: (pid#%li) failed <%02i-%i>\n",
+			srb->cmd->pid, dcb->target_id, dcb->target_lun);
+		srb_going_to_waiting_move(dcb, srb);
+		waiting_set_timer(acb, HZ / 100);
+	}
+}
+
+
+/**
+ * device_alloc - Allocate a new device instance. This create the
+ * devices instance and sets up all the data items. The adapter
+ * instance is required to obtain confiuration information for this
+ * device. This does *not* add this device to the adapters device
+ * list.
+ *
+ * @acb: The adapter to obtain configuration information from.
+ * @target: The target for the new device.
+ * @lun: The lun for the new device.
+ *
+ * Return the new device if succesfull or NULL on failure.
+ **/
+static struct DeviceCtlBlk *device_alloc(struct AdapterCtlBlk *acb,
+		u8 target, u8 lun)
+{
+	struct NvRamType *eeprom = &acb->eeprom;
+	u8 period_index = eeprom->target[target].period & 0x07;
+	struct DeviceCtlBlk *dcb;
+
+	dcb = kmalloc(sizeof(struct DeviceCtlBlk), GFP_ATOMIC);
+	dprintkdbg(DBG_0, "device_alloc: <%02i-%i>\n", target, lun);
+	if (!dcb)
+		return NULL;
+	dcb->acb = NULL;
+	INIT_LIST_HEAD(&dcb->srb_going_list);
+	INIT_LIST_HEAD(&dcb->srb_waiting_list);
+	dcb->active_srb = NULL;
+	dcb->tag_mask = 0;
+	dcb->max_command = 1;
+	dcb->target_id = target;
+	dcb->target_lun = lun;
+#ifndef DC395x_NO_DISCONNECT
+	dcb->identify_msg =
+	    IDENTIFY(dcb->dev_mode & NTC_DO_DISCONNECT, lun);
+#else
+	dcb->identify_msg = IDENTIFY(0, lun);
+#endif
+	dcb->dev_mode = eeprom->target[target].cfg0;
+	dcb->inquiry7 = 0;
+	dcb->sync_mode = 0;
+	dcb->min_nego_period = clock_period[period_index];
+	dcb->sync_period = 0;
+	dcb->sync_offset = 0;
+	dcb->flag = 0;
+
+#ifndef DC395x_NO_WIDE
+	if ((dcb->dev_mode & NTC_DO_WIDE_NEGO)
+	    && (acb->config & HCC_WIDE_CARD))
+		dcb->sync_mode |= WIDE_NEGO_ENABLE;
+#endif
+#ifndef DC395x_NO_SYNC
+	if (dcb->dev_mode & NTC_DO_SYNC_NEGO)
+		if (!(lun) || current_sync_offset)
+			dcb->sync_mode |= SYNC_NEGO_ENABLE;
+#endif
+	if (dcb->target_lun != 0) {
+		/* Copy settings */
+		struct DeviceCtlBlk *p;
+		list_for_each_entry(p, &acb->dcb_list, list)
+			if (p->target_id == dcb->target_id)
+				break;
+		dprintkdbg(DBG_1, 
+		       "device_alloc: <%02i-%i> copy from <%02i-%i>\n",
+		       dcb->target_id, dcb->target_lun,
+		       p->target_id, p->target_lun);
+		dcb->sync_mode = p->sync_mode;
+		dcb->sync_period = p->sync_period;
+		dcb->min_nego_period = p->min_nego_period;
+		dcb->sync_offset = p->sync_offset;
+		dcb->inquiry7 = p->inquiry7;
+	}
+	return dcb;
+}
+
+
+/**
+ * adapter_add_device - Adds the device instance to the adaptor instance.
+ *
+ * @acb: The adapter device to be updated
+ * @dcb: A newly created and intialised device instance to add.
+ **/
+static void adapter_add_device(struct AdapterCtlBlk *acb,
+		struct DeviceCtlBlk *dcb)
+{
+	/* backpointer to adapter */
+	dcb->acb = acb;
+	
+	/* set run_robin to this device if it is currently empty */
+	if (list_empty(&acb->dcb_list))
+		acb->dcb_run_robin = dcb;
+
+	/* add device to list */
+	list_add_tail(&dcb->list, &acb->dcb_list);
+
+	/* update device maps */
+	acb->dcb_map[dcb->target_id] |= (1 << dcb->target_lun);
+	acb->children[dcb->target_id][dcb->target_lun] = dcb;
+}
+
+
+/**
+ * adapter_remove_device - Removes the device instance from the adaptor
+ * instance. The device instance is not check in any way or freed by this. 
+ * The caller is expected to take care of that. This will simply remove the
+ * device from the adapters data strcutures.
+ *
+ * @acb: The adapter device to be updated
+ * @dcb: A device that has previously been added to the adapter.
+ **/
+static void adapter_remove_device(struct AdapterCtlBlk *acb,
+		struct DeviceCtlBlk *dcb)
+{
+	struct DeviceCtlBlk *i;
+	struct DeviceCtlBlk *tmp;
+	dprintkdbg(DBG_0, "adapter_remove_device: <%02i-%i>\n",
+		dcb->target_id, dcb->target_lun);
+
+	/* fix up any pointers to this device that we have in the adapter */
+	if (acb->active_dcb == dcb)
+		acb->active_dcb = NULL;
+	if (acb->dcb_run_robin == dcb)
+		acb->dcb_run_robin = dcb_get_next(&acb->dcb_list, dcb);
+
+	/* unlink from list */
+	list_for_each_entry_safe(i, tmp, &acb->dcb_list, list)
+		if (dcb == i) {
+			list_del(&i->list);
+			break;
+		}
+
+	/* clear map and children */	
+	acb->dcb_map[dcb->target_id] &= ~(1 << dcb->target_lun);
+	acb->children[dcb->target_id][dcb->target_lun] = NULL;
+	dcb->acb = NULL;
+}
+
+
+/**
+ * adapter_remove_and_free_device - Removes a single device from the adapter
+ * and then frees the device information.
+ *
+ * @acb: The adapter device to be updated
+ * @dcb: A device that has previously been added to the adapter.
+ */
+static void adapter_remove_and_free_device(struct AdapterCtlBlk *acb,
+		struct DeviceCtlBlk *dcb)
+{
+	if (list_size(&dcb->srb_going_list) > 1) {
+		dprintkdbg(DBG_1, "adapter_remove_and_free_device: <%02i-%i> "
+		           "Won't remove because of %i active requests.\n",
+			   dcb->target_id, dcb->target_lun,
+			   list_size(&dcb->srb_going_list));
+		return;
+	}
+	adapter_remove_device(acb, dcb);
+	kfree(dcb);
+}
+
+
+/**
+ * adapter_remove_and_free_all_devices - Removes and frees all of the
+ * devices associated with the specified adapter.
+ *
+ * @acb: The adapter from which all devices should be removed.
+ **/
+static void adapter_remove_and_free_all_devices(struct AdapterCtlBlk* acb)
+{
+	struct DeviceCtlBlk *dcb;
+	struct DeviceCtlBlk *tmp;
+	dprintkdbg(DBG_1, "adapter_remove_and_free_all_devices: num=%i\n",
+		   list_size(&acb->dcb_list));
+
+	list_for_each_entry_safe(dcb, tmp, &acb->dcb_list, list)
+		adapter_remove_and_free_device(acb, dcb);
+}
+
+
+/**
+ * dc395x_slave_alloc - Called by the scsi mid layer to tell us about a new
+ * scsi device that we need to deal with. We allocate a new device and then
+ * insert that device into the adapters device list.
+ *
+ * @scsi_device: The new scsi device that we need to handle.
+ **/
+static int dc395x_slave_alloc(struct scsi_device *scsi_device)
+{
+	struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)scsi_device->host->hostdata;
+	struct DeviceCtlBlk *dcb;
+
+	dcb = device_alloc(acb, scsi_device->id, scsi_device->lun);
+	if (!dcb)
+		return -ENOMEM;
+	adapter_add_device(acb, dcb);
+
+	return 0;
+}
+
+
+/**
+ * dc395x_slave_destroy - Called by the scsi mid layer to tell us about a
+ * device that is going away.
+ *
+ * @scsi_device: The new scsi device that we need to handle.
+ **/
+static void dc395x_slave_destroy(struct scsi_device *scsi_device)
+{
+	struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)scsi_device->host->hostdata;
+	struct DeviceCtlBlk *dcb = find_dcb(acb, scsi_device->id, scsi_device->lun);
+	if (dcb)
+		adapter_remove_and_free_device(acb, dcb);
+}
+
+
+
+
+/**
+ * trms1040_wait_30us: wait for 30 us
+ *
+ * Waits for 30us (using the chip by the looks of it..)
+ *
+ * @io_port: base I/O address
+ **/
+static void __devinit trms1040_wait_30us(unsigned long io_port)
+{
+	/* ScsiPortStallExecution(30); wait 30 us */
+	outb(5, io_port + TRM_S1040_GEN_TIMER);
+	while (!(inb(io_port + TRM_S1040_GEN_STATUS) & GTIMEOUT))
+		/* nothing */ ;
+}
+
+
+/**
+ * trms1040_write_cmd - write the secified command and address to
+ * chip
+ *
+ * @io_port:	base I/O address
+ * @cmd:	SB + op code (command) to send
+ * @addr:	address to send
+ **/
+static void __devinit trms1040_write_cmd(unsigned long io_port, u8 cmd, u8 addr)
+{
+	int i;
+	u8 send_data;
+
+	/* program SB + OP code */
+	for (i = 0; i < 3; i++, cmd <<= 1) {
+		send_data = NVR_SELECT;
+		if (cmd & 0x04)	/* Start from bit 2 */
+			send_data |= NVR_BITOUT;
+
+		outb(send_data, io_port + TRM_S1040_GEN_NVRAM);
+		trms1040_wait_30us(io_port);
+		outb((send_data | NVR_CLOCK),
+		     io_port + TRM_S1040_GEN_NVRAM);
+		trms1040_wait_30us(io_port);
+	}
+
+	/* send address */
+	for (i = 0; i < 7; i++, addr <<= 1) {
+		send_data = NVR_SELECT;
+		if (addr & 0x40)	/* Start from bit 6 */
+			send_data |= NVR_BITOUT;
+
+		outb(send_data, io_port + TRM_S1040_GEN_NVRAM);
+		trms1040_wait_30us(io_port);
+		outb((send_data | NVR_CLOCK),
+		     io_port + TRM_S1040_GEN_NVRAM);
+		trms1040_wait_30us(io_port);
+	}
+	outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
+	trms1040_wait_30us(io_port);
+}
+
+
+/**
+ * trms1040_set_data - store a single byte in the eeprom
+ *
+ * Called from write all to write a single byte into the SSEEPROM
+ * Which is done one bit at a time.
+ *
+ * @io_port:	base I/O address
+ * @addr:	offset into EEPROM
+ * @byte:	bytes to write
+ **/
+static void __devinit trms1040_set_data(unsigned long io_port, u8 addr, u8 byte)
+{
+	int i;
+	u8 send_data;
+
+	/* Send write command & address */
+	trms1040_write_cmd(io_port, 0x05, addr);
+
+	/* Write data */
+	for (i = 0; i < 8; i++, byte <<= 1) {
+		send_data = NVR_SELECT;
+		if (byte & 0x80)	/* Start from bit 7 */
+			send_data |= NVR_BITOUT;
+
+		outb(send_data, io_port + TRM_S1040_GEN_NVRAM);
+		trms1040_wait_30us(io_port);
+		outb((send_data | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM);
+		trms1040_wait_30us(io_port);
+	}
+	outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
+	trms1040_wait_30us(io_port);
+
+	/* Disable chip select */
+	outb(0, io_port + TRM_S1040_GEN_NVRAM);
+	trms1040_wait_30us(io_port);
+
+	outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
+	trms1040_wait_30us(io_port);
+
+	/* Wait for write ready */
+	while (1) {
+		outb((NVR_SELECT | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM);
+		trms1040_wait_30us(io_port);
+
+		outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
+		trms1040_wait_30us(io_port);
+
+		if (inb(io_port + TRM_S1040_GEN_NVRAM) & NVR_BITIN)
+			break;
+	}
+
+	/*  Disable chip select */
+	outb(0, io_port + TRM_S1040_GEN_NVRAM);
+}
+
+
+/**
+ * trms1040_write_all - write 128 bytes to the eeprom
+ *
+ * Write the supplied 128 bytes to the chips SEEPROM
+ *
+ * @eeprom:	the data to write
+ * @io_port:	the base io port
+ **/
+static void __devinit trms1040_write_all(struct NvRamType *eeprom, unsigned long io_port)
+{
+	u8 *b_eeprom = (u8 *)eeprom;
+	u8 addr;
+
+	/* Enable SEEPROM */
+	outb((inb(io_port + TRM_S1040_GEN_CONTROL) | EN_EEPROM),
+	     io_port + TRM_S1040_GEN_CONTROL);
+
+	/* write enable */
+	trms1040_write_cmd(io_port, 0x04, 0xFF);
+	outb(0, io_port + TRM_S1040_GEN_NVRAM);
+	trms1040_wait_30us(io_port);
+
+	/* write */
+	for (addr = 0; addr < 128; addr++, b_eeprom++)
+		trms1040_set_data(io_port, addr, *b_eeprom);
+
+	/* write disable */
+	trms1040_write_cmd(io_port, 0x04, 0x00);
+	outb(0, io_port + TRM_S1040_GEN_NVRAM);
+	trms1040_wait_30us(io_port);
+
+	/* Disable SEEPROM */
+	outb((inb(io_port + TRM_S1040_GEN_CONTROL) & ~EN_EEPROM),
+	     io_port + TRM_S1040_GEN_CONTROL);
+}
+
+
+/**
+ * trms1040_get_data - get a single byte from the eeprom
+ *
+ * Called from read all to read a single byte into the SSEEPROM
+ * Which is done one bit at a time.
+ *
+ * @io_port:	base I/O address
+ * @addr:	offset into SEEPROM
+ *
+ * Returns the the byte read.
+ **/
+static u8 __devinit trms1040_get_data(unsigned long io_port, u8 addr)
+{
+	int i;
+	u8 read_byte;
+	u8 result = 0;
+
+	/* Send read command & address */
+	trms1040_write_cmd(io_port, 0x06, addr);
+
+	/* read data */
+	for (i = 0; i < 8; i++) {
+		outb((NVR_SELECT | NVR_CLOCK), io_port + TRM_S1040_GEN_NVRAM);
+		trms1040_wait_30us(io_port);
+		outb(NVR_SELECT, io_port + TRM_S1040_GEN_NVRAM);
+
+		/* Get data bit while falling edge */
+		read_byte = inb(io_port + TRM_S1040_GEN_NVRAM);
+		result <<= 1;
+		if (read_byte & NVR_BITIN)
+			result |= 1;
+
+		trms1040_wait_30us(io_port);
+	}
+
+	/* Disable chip select */
+	outb(0, io_port + TRM_S1040_GEN_NVRAM);
+	return result;
+}
+
+
+/**
+ * trms1040_read_all - read all bytes from the eeprom
+ *
+ * Read the 128 bytes from the SEEPROM.
+ *
+ * @eeprom:	where to store the data
+ * @io_port:	the base io port
+ **/
+static void __devinit trms1040_read_all(struct NvRamType *eeprom, unsigned long io_port)
+{
+	u8 *b_eeprom = (u8 *)eeprom;
+	u8 addr;
+
+	/* Enable SEEPROM */
+	outb((inb(io_port + TRM_S1040_GEN_CONTROL) | EN_EEPROM),
+	     io_port + TRM_S1040_GEN_CONTROL);
+
+	/* read details */
+	for (addr = 0; addr < 128; addr++, b_eeprom++)
+		*b_eeprom = trms1040_get_data(io_port, addr);
+
+	/* Disable SEEPROM */
+	outb((inb(io_port + TRM_S1040_GEN_CONTROL) & ~EN_EEPROM),
+	     io_port + TRM_S1040_GEN_CONTROL);
+}
+
+
+
+/**
+ * check_eeprom - get and check contents of the eeprom
+ *
+ * Read seeprom 128 bytes into the memory provider in eeprom.
+ * Checks the checksum and if it's not correct it uses a set of default
+ * values.
+ *
+ * @eeprom:	caller allocated strcuture to read the eeprom data into
+ * @io_port:	io port to read from
+ **/
+static void __devinit check_eeprom(struct NvRamType *eeprom, unsigned long io_port)
+{
+	u16 *w_eeprom = (u16 *)eeprom;
+	u16 w_addr;
+	u16 cksum;
+	u32 d_addr;
+	u32 *d_eeprom;
+
+	trms1040_read_all(eeprom, io_port);	/* read eeprom */
+
+	cksum = 0;
+	for (w_addr = 0, w_eeprom = (u16 *)eeprom; w_addr < 64;
+	     w_addr++, w_eeprom++)
+		cksum += *w_eeprom;
+	if (cksum != 0x1234) {
+		/*
+		 * Checksum is wrong.
+		 * Load a set of defaults into the eeprom buffer
+		 */
+		dprintkl(KERN_WARNING,
+			"EEProm checksum error: using default values and options.\n");
+		eeprom->sub_vendor_id[0] = (u8)PCI_VENDOR_ID_TEKRAM;
+		eeprom->sub_vendor_id[1] = (u8)(PCI_VENDOR_ID_TEKRAM >> 8);
+		eeprom->sub_sys_id[0] = (u8)PCI_DEVICE_ID_TEKRAM_TRMS1040;
+		eeprom->sub_sys_id[1] =
+		    (u8)(PCI_DEVICE_ID_TEKRAM_TRMS1040 >> 8);
+		eeprom->sub_class = 0x00;
+		eeprom->vendor_id[0] = (u8)PCI_VENDOR_ID_TEKRAM;
+		eeprom->vendor_id[1] = (u8)(PCI_VENDOR_ID_TEKRAM >> 8);
+		eeprom->device_id[0] = (u8)PCI_DEVICE_ID_TEKRAM_TRMS1040;
+		eeprom->device_id[1] =
+		    (u8)(PCI_DEVICE_ID_TEKRAM_TRMS1040 >> 8);
+		eeprom->reserved = 0x00;
+
+		for (d_addr = 0, d_eeprom = (u32 *)eeprom->target;
+		     d_addr < 16; d_addr++, d_eeprom++)
+			*d_eeprom = 0x00000077;	/* cfg3,cfg2,period,cfg0 */
+
+		*d_eeprom++ = 0x04000F07;	/* max_tag,delay_time,channel_cfg,scsi_id */
+		*d_eeprom++ = 0x00000015;	/* reserved1,boot_lun,boot_target,reserved0 */
+		for (d_addr = 0; d_addr < 12; d_addr++, d_eeprom++)
+			*d_eeprom = 0x00;
+
+		/* Now load defaults (maybe set by boot/module params) */
+		set_safe_settings();
+		fix_settings();
+		eeprom_override(eeprom);
+
+		eeprom->cksum = 0x00;
+		for (w_addr = 0, cksum = 0, w_eeprom = (u16 *)eeprom;
+		     w_addr < 63; w_addr++, w_eeprom++)
+			cksum += *w_eeprom;
+
+		*w_eeprom = 0x1234 - cksum;
+		trms1040_write_all(eeprom, io_port);
+		eeprom->delay_time = cfg_data[CFG_RESET_DELAY].value;
+	} else {
+		set_safe_settings();
+		eeprom_index_to_delay(eeprom);
+		eeprom_override(eeprom);
+	}
+}
+
+
+/**
+ * print_eeprom_settings - output the eeprom settings
+ * to the kernel log so people can see what they were.
+ *
+ * @eeprom: The eeprom data strucutre to show details for.
+ **/
+static void __devinit print_eeprom_settings(struct NvRamType *eeprom)
+{
+	dprintkl(KERN_INFO, "Used settings: AdapterID=%02i, Speed=%i(%02i.%01iMHz), dev_mode=0x%02x\n",
+		eeprom->scsi_id,
+		eeprom->target[0].period,
+		clock_speed[eeprom->target[0].period] / 10,
+		clock_speed[eeprom->target[0].period] % 10,
+		eeprom->target[0].cfg0);
+	dprintkl(KERN_INFO, "               AdaptMode=0x%02x, Tags=%i(%02i), DelayReset=%is\n",
+		eeprom->channel_cfg, eeprom->max_tag,
+		1 << eeprom->max_tag, eeprom->delay_time);
+}
+
+
+/* Free SG tables */
+static void adapter_sg_tables_free(struct AdapterCtlBlk *acb)
+{
+	int i;
+	const unsigned srbs_per_page = PAGE_SIZE/SEGMENTX_LEN;
+
+	for (i = 0; i < DC395x_MAX_SRB_CNT; i += srbs_per_page)
+		kfree(acb->srb_array[i].segment_x);
+
+	vfree(acb->srb_array[0].virt_map);
+}
+
+
+/*
+ * Allocate SG tables; as we have to pci_map them, an SG list (struct SGentry*)
+ * should never cross a page boundary */
+static int __devinit adapter_sg_tables_alloc(struct AdapterCtlBlk *acb)
+{
+	const unsigned mem_needed = (DC395x_MAX_SRB_CNT+1)
+	                            *SEGMENTX_LEN;
+	int pages = (mem_needed+(PAGE_SIZE-1))/PAGE_SIZE;
+	const unsigned srbs_per_page = PAGE_SIZE/SEGMENTX_LEN;
+	int srb_idx = 0;
+	unsigned i = 0;
+	struct SGentry *ptr;
+	void **virt_array;
+
+	for (i = 0; i < DC395x_MAX_SRB_CNT; i++) {
+		acb->srb_array[i].segment_x = NULL;
+		acb->srb_array[i].virt_map = NULL;
+	}
+
+	dprintkdbg(DBG_1, "Allocate %i pages for SG tables\n", pages);
+	while (pages--) {
+		ptr = (struct SGentry *)kmalloc(PAGE_SIZE, GFP_KERNEL);
+		if (!ptr) {
+			adapter_sg_tables_free(acb);
+			return 1;
+		}
+		dprintkdbg(DBG_1, "Allocate %li bytes at %p for SG segments %i\n",
+			PAGE_SIZE, ptr, srb_idx);
+		i = 0;
+		while (i < srbs_per_page && srb_idx < DC395x_MAX_SRB_CNT)
+			acb->srb_array[srb_idx++].segment_x =
+			    ptr + (i++ * DC395x_MAX_SG_LISTENTRY);
+	}
+	if (i < srbs_per_page)
+		acb->srb.segment_x =
+		    ptr + (i * DC395x_MAX_SG_LISTENTRY);
+	else
+		dprintkl(KERN_DEBUG, "No space for tmsrb SG table reserved?!\n");
+
+	virt_array = vmalloc((DC395x_MAX_SRB_CNT + 1) * DC395x_MAX_SG_LISTENTRY * sizeof(void*));
+
+	if (!virt_array) {
+		adapter_sg_tables_free(acb);
+		return 1;
+	}
+
+	for (i = 0; i < DC395x_MAX_SRB_CNT + 1; i++) {
+		acb->srb_array[i].virt_map = virt_array;
+		virt_array += DC395x_MAX_SG_LISTENTRY;
+	}
+
+	return 0;
+}
+
+
+
+/**
+ * adapter_print_config - print adapter connection and termination
+ * config
+ *
+ * The io port in the adapter needs to have been set before calling
+ * this function.
+ *
+ * @acb: The adapter to print the information for.
+ **/
+static void __devinit adapter_print_config(struct AdapterCtlBlk *acb)
+{
+	u8 bval;
+
+	bval = DC395x_read8(acb, TRM_S1040_GEN_STATUS);
+	dprintkl(KERN_INFO, "%sConnectors: ",
+		((bval & WIDESCSI) ? "(Wide) " : ""));
+	if (!(bval & CON5068))
+		printk("ext%s ", !(bval & EXT68HIGH) ? "68" : "50");
+	if (!(bval & CON68))
+		printk("int68%s ", !(bval & INT68HIGH) ? "" : "(50)");
+	if (!(bval & CON50))
+		printk("int50 ");
+	if ((bval & (CON5068 | CON50 | CON68)) ==
+	    0 /*(CON5068 | CON50 | CON68) */ )
+		printk(" Oops! (All 3?) ");
+	bval = DC395x_read8(acb, TRM_S1040_GEN_CONTROL);
+	printk(" Termination: ");
+	if (bval & DIS_TERM)
+		printk("Disabled\n");
+	else {
+		if (bval & AUTOTERM)
+			printk("Auto ");
+		if (bval & LOW8TERM)
+			printk("Low ");
+		if (bval & UP8TERM)
+			printk("High ");
+		printk("\n");
+	}
+}
+
+
+/**
+ * adapter_init_params - Initialize the various parameters in the
+ * adapter structure. Note that the pointer to the scsi_host is set
+ * early (when this instance is created) and the io_port and irq
+ * values are set later after they have been reserved. This just gets
+ * everything set to a good starting position.
+ *
+ * The eeprom structure in the adapter needs to have been set before
+ * calling this function.
+ *
+ * @acb: The adapter to initialize.
+ **/
+static void __devinit adapter_init_params(struct AdapterCtlBlk *acb)
+{
+	struct NvRamType *eeprom = &acb->eeprom;
+	int i;
+
+	/* NOTE: acb->scsi_host is set at scsi_host/acb creation time */
+	/* NOTE: acb->io_port_base is set at port registration time */
+	/* NOTE: acb->io_port_len is set at port registration time */
+
+	INIT_LIST_HEAD(&acb->dcb_list);
+	acb->dcb_run_robin = NULL;
+	acb->active_dcb = NULL;
+
+	INIT_LIST_HEAD(&acb->srb_free_list);
+	/*  temp SRB for Q tag used or abort command used  */
+	acb->tmp_srb = &acb->srb;
+	init_timer(&acb->waiting_timer);
+	init_timer(&acb->selto_timer);
+
+	acb->srb_count = DC395x_MAX_SRB_CNT;
+
+	acb->sel_timeout = DC395x_SEL_TIMEOUT;	/* timeout=250ms */
+	/* NOTE: acb->irq_level is set at IRQ registration time */
+
+	acb->tag_max_num = 1 << eeprom->max_tag;
+	if (acb->tag_max_num > 30)
+		acb->tag_max_num = 30;
+
+	acb->acb_flag = 0;	/* RESET_DETECT, RESET_DONE, RESET_DEV */
+	acb->gmode2 = eeprom->channel_cfg;
+	acb->config = 0;	/* NOTE: actually set in adapter_init_chip */
+
+	if (eeprom->channel_cfg & NAC_SCANLUN)
+		acb->lun_chk = 1;
+	acb->scan_devices = 1;
+
+	acb->scsi_host->this_id = eeprom->scsi_id;
+	acb->hostid_bit = (1 << acb->scsi_host->this_id);
+
+	for (i = 0; i < DC395x_MAX_SCSI_ID; i++)
+		acb->dcb_map[i] = 0;
+
+	acb->msg_len = 0;
+	
+	/* link static array of srbs into the srb free list */
+	for (i = 0; i < acb->srb_count - 1; i++)
+		srb_free_insert(acb, &acb->srb_array[i]);
+}
+
+
+/**
+ * adapter_init_host - Initialize the scsi host instance based on
+ * values that we have already stored in the adapter instance. There's
+ * some mention that a lot of these are deprecated, so we won't use
+ * them (we'll use the ones in the adapter instance) but we'll fill
+ * them in in case something else needs them.
+ *
+ * The eeprom structure, irq and io ports in the adapter need to have
+ * been set before calling this function.
+ *
+ * @host: The scsi host instance to fill in the values for.
+ **/
+static void __devinit adapter_init_scsi_host(struct Scsi_Host *host)
+{
+        struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)host->hostdata;
+	struct NvRamType *eeprom = &acb->eeprom;
+        
+	host->max_cmd_len = 24;
+	host->can_queue = DC395x_MAX_CMD_QUEUE;
+	host->cmd_per_lun = DC395x_MAX_CMD_PER_LUN;
+	host->this_id = (int)eeprom->scsi_id;
+	host->io_port = acb->io_port_base;
+	host->n_io_port = acb->io_port_len;
+	host->dma_channel = -1;
+	host->unique_id = acb->io_port_base;
+	host->irq = acb->irq_level;
+	host->last_reset = jiffies;
+
+	host->max_id = 16;
+	if (host->max_id - 1 == eeprom->scsi_id)
+		host->max_id--;
+
+#ifdef CONFIG_SCSI_MULTI_LUN
+	if (eeprom->channel_cfg & NAC_SCANLUN)
+		host->max_lun = 8;
+	else
+		host->max_lun = 1;
+#else
+	host->max_lun = 1;
+#endif
+
+}
+
+
+/**
+ * adapter_init_chip - Get the chip into a know state and figure out
+ * some of the settings that apply to this adapter.
+ *
+ * The io port in the adapter needs to have been set before calling
+ * this function. The config will be configured correctly on return.
+ *
+ * @acb: The adapter which we are to init.
+ **/
+static void __devinit adapter_init_chip(struct AdapterCtlBlk *acb)
+{
+        struct NvRamType *eeprom = &acb->eeprom;
+        
+        /* Mask all the interrupt */
+	DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0x00);
+	DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0x00);
+
+	/* Reset SCSI module */
+	DC395x_write16(acb, TRM_S1040_SCSI_CONTROL, DO_RSTMODULE);
+
+	/* Reset PCI/DMA module */
+	DC395x_write8(acb, TRM_S1040_DMA_CONTROL, DMARESETMODULE);
+	udelay(20);
+
+	/* program configuration 0 */
+	acb->config = HCC_AUTOTERM | HCC_PARITY;
+	if (DC395x_read8(acb, TRM_S1040_GEN_STATUS) & WIDESCSI)
+		acb->config |= HCC_WIDE_CARD;
+
+	if (eeprom->channel_cfg & NAC_POWERON_SCSI_RESET)
+		acb->config |= HCC_SCSI_RESET;
+
+	if (acb->config & HCC_SCSI_RESET) {
+		dprintkl(KERN_INFO, "Performing initial SCSI bus reset\n");
+		DC395x_write8(acb, TRM_S1040_SCSI_CONTROL, DO_RSTSCSI);
+
+		/*while (!( DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS) & INT_SCSIRESET )); */
+		/*spin_unlock_irq (&io_request_lock); */
+		udelay(500);
+
+		acb->scsi_host->last_reset =
+		    jiffies + HZ / 2 +
+		    HZ * acb->eeprom.delay_time;
+
+		/*spin_lock_irq (&io_request_lock); */
+	}
+}
+
+
+/**
+ * init_adapter - Grab the resource for the card, setup the adapter
+ * information, set the card into a known state, create the various
+ * tables etc etc. This basically gets all adapter information all up
+ * to date, intialised and gets the chip in sync with it.
+ *
+ * @host:	This hosts adapter structure
+ * @io_port:	The base I/O port
+ * @irq:	IRQ
+ *
+ * Returns 0 if the initialization succeeds, any other value on
+ * failure.
+ **/
+static int __devinit adapter_init(struct AdapterCtlBlk *acb,
+	unsigned long io_port, u32 io_port_len, unsigned int irq)
+{
+	if (!request_region(io_port, io_port_len, DC395X_NAME)) {
+		dprintkl(KERN_ERR, "Failed to reserve IO region 0x%lx\n", io_port);
+		goto failed;
+	}
+	/* store port base to indicate we have registered it */
+	acb->io_port_base = io_port;
+	acb->io_port_len = io_port_len;
+	
+	if (request_irq(irq, dc395x_interrupt, SA_SHIRQ, DC395X_NAME, acb)) {
+	    	/* release the region we just claimed */
+		dprintkl(KERN_INFO, "Failed to register IRQ\n");
+		goto failed;
+	}
+	/* store irq to indicate we have registered it */
+	acb->irq_level = irq;
+
+	/* get eeprom configuration information and command line settings etc */
+	check_eeprom(&acb->eeprom, io_port);
+ 	print_eeprom_settings(&acb->eeprom);
+
+	/* setup adapter control block */	
+	adapter_init_params(acb);
+	
+	/* display card connectors/termination settings */
+ 	adapter_print_config(acb);
+
+	if (adapter_sg_tables_alloc(acb)) {
+		dprintkl(KERN_DEBUG, "Memory allocation for SG tables failed\n");
+		goto failed;
+	}
+	adapter_init_scsi_host(acb->scsi_host);
+	adapter_init_chip(acb);
+	set_basic_config(acb);
+
+	dprintkdbg(DBG_0,
+		"adapter_init: acb=%p, pdcb_map=%p psrb_array=%p "
+		"size{acb=0x%04x dcb=0x%04x srb=0x%04x}\n",
+		acb, acb->dcb_map, acb->srb_array, sizeof(struct AdapterCtlBlk),
+		sizeof(struct DeviceCtlBlk), sizeof(struct ScsiReqBlk));
+	return 0;
+
+failed:
+	if (acb->irq_level)
+		free_irq(acb->irq_level, acb);
+	if (acb->io_port_base)
+		release_region(acb->io_port_base, acb->io_port_len);
+	adapter_sg_tables_free(acb);
+
+	return 1;
+}
+
+
+/**
+ * adapter_uninit_chip - cleanly shut down the scsi controller chip,
+ * stopping all operations and disabling interrupt generation on the
+ * card.
+ *
+ * @acb: The adapter which we are to shutdown.
+ **/
+static void adapter_uninit_chip(struct AdapterCtlBlk *acb)
+{
+	/* disable interrupts */
+	DC395x_write8(acb, TRM_S1040_DMA_INTEN, 0);
+	DC395x_write8(acb, TRM_S1040_SCSI_INTEN, 0);
+
+	/* reset the scsi bus */
+	if (acb->config & HCC_SCSI_RESET)
+		reset_scsi_bus(acb);
+
+	/* clear any pending interupt state */
+	DC395x_read8(acb, TRM_S1040_SCSI_INTSTATUS);
+}
+
+
+
+/**
+ * adapter_uninit - Shut down the chip and release any resources that
+ * we had allocated. Once this returns the adapter should not be used
+ * anymore.
+ *
+ * @acb: The adapter which we are to un-initialize.
+ **/
+static void adapter_uninit(struct AdapterCtlBlk *acb)
+{
+	unsigned long flags;
+	DC395x_LOCK_IO(acb->scsi_host, flags);
+
+	/* remove timers */
+	if (timer_pending(&acb->waiting_timer))
+		del_timer(&acb->waiting_timer);
+	if (timer_pending(&acb->selto_timer))
+		del_timer(&acb->selto_timer);
+
+	adapter_uninit_chip(acb);
+	adapter_remove_and_free_all_devices(acb);
+	DC395x_UNLOCK_IO(acb->scsi_host, flags);
+
+	if (acb->irq_level)
+		free_irq(acb->irq_level, acb);
+	if (acb->io_port_base)
+		release_region(acb->io_port_base, acb->io_port_len);
+
+	adapter_sg_tables_free(acb);
+}
+
+
+#undef SPRINTF
+#define SPRINTF(args...) pos += sprintf(pos, args)
+
+#undef YESNO
+#define YESNO(YN) \
+ if (YN) SPRINTF(" Yes ");\
+ else SPRINTF(" No  ")
+
+static int dc395x_proc_info(struct Scsi_Host *host, char *buffer,
+		char **start, off_t offset, int length, int inout)
+{
+	struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)host->hostdata;
+	int spd, spd1;
+	char *pos = buffer;
+	struct DeviceCtlBlk *dcb;
+	unsigned long flags;
+	int dev;
+
+	if (inout)		/* Has data been written to the file ? */
+		return -EPERM;
+
+	SPRINTF(DC395X_BANNER " PCI SCSI Host Adapter\n");
+	SPRINTF(" Driver Version " DC395X_VERSION "\n");
+
+	DC395x_LOCK_IO(acb->scsi_host, flags);
+
+	SPRINTF("SCSI Host Nr %i, ", host->host_no);
+	SPRINTF("DC395U/UW/F DC315/U %s\n",
+		(acb->config & HCC_WIDE_CARD) ? "Wide" : "");
+	SPRINTF("io_port_base 0x%04lx, ", acb->io_port_base);
+	SPRINTF("irq_level 0x%04x, ", acb->irq_level);
+	SPRINTF(" SelTimeout %ims\n", (1638 * acb->sel_timeout) / 1000);
+
+	SPRINTF("MaxID %i, MaxLUN %i, ", host->max_id, host->max_lun);
+	SPRINTF("AdapterID %i\n", host->this_id);
+
+	SPRINTF("tag_max_num %i", acb->tag_max_num);
+	/*SPRINTF(", DMA_Status %i\n", DC395x_read8(acb, TRM_S1040_DMA_STATUS)); */
+	SPRINTF(", FilterCfg 0x%02x",
+		DC395x_read8(acb, TRM_S1040_SCSI_CONFIG1));
+	SPRINTF(", DelayReset %is\n", acb->eeprom.delay_time);
+	/*SPRINTF("\n"); */
+
+	SPRINTF("Nr of DCBs: %i\n", list_size(&acb->dcb_list));
+	SPRINTF
+	    ("Map of attached LUNs: %02x %02x %02x %02x %02x %02x %02x %02x\n",
+	     acb->dcb_map[0], acb->dcb_map[1], acb->dcb_map[2],
+	     acb->dcb_map[3], acb->dcb_map[4], acb->dcb_map[5],
+	     acb->dcb_map[6], acb->dcb_map[7]);
+	SPRINTF
+	    ("                      %02x %02x %02x %02x %02x %02x %02x %02x\n",
+	     acb->dcb_map[8], acb->dcb_map[9], acb->dcb_map[10],
+	     acb->dcb_map[11], acb->dcb_map[12], acb->dcb_map[13],
+	     acb->dcb_map[14], acb->dcb_map[15]);
+
+	SPRINTF
+	    ("Un ID LUN Prty Sync Wide DsCn SndS TagQ nego_period SyncFreq SyncOffs MaxCmd\n");
+
+	dev = 0;
+	list_for_each_entry(dcb, &acb->dcb_list, list) {
+		int nego_period;
+		SPRINTF("%02i %02i  %02i ", dev, dcb->target_id,
+			dcb->target_lun);
+		YESNO(dcb->dev_mode & NTC_DO_PARITY_CHK);
+		YESNO(dcb->sync_offset);
+		YESNO(dcb->sync_period & WIDE_SYNC);
+		YESNO(dcb->dev_mode & NTC_DO_DISCONNECT);
+		YESNO(dcb->dev_mode & NTC_DO_SEND_START);
+		YESNO(dcb->sync_mode & EN_TAG_QUEUEING);
+		nego_period = clock_period[dcb->sync_period & 0x07] << 2;
+		if (dcb->sync_offset)
+			SPRINTF("  %03i ns ", nego_period);
+		else
+			SPRINTF(" (%03i ns)", (dcb->min_nego_period << 2));
+
+		if (dcb->sync_offset & 0x0f) {
+			spd = 1000 / (nego_period);
+			spd1 = 1000 % (nego_period);
+			spd1 = (spd1 * 10 + nego_period / 2) / (nego_period);
+			SPRINTF("   %2i.%1i M     %02i ", spd, spd1,
+				(dcb->sync_offset & 0x0f));
+		} else
+			SPRINTF("                 ");
+
+		/* Add more info ... */
+		SPRINTF("     %02i\n", dcb->max_command);
+		dev++;
+	}
+
+	if (timer_pending(&acb->waiting_timer))
+		SPRINTF("Waiting queue timer running\n");
+	else
+		SPRINTF("\n");
+
+	list_for_each_entry(dcb, &acb->dcb_list, list) {
+		struct ScsiReqBlk *srb;
+		if (!list_empty(&dcb->srb_waiting_list))
+			SPRINTF("DCB (%02i-%i): Waiting: %i:",
+				dcb->target_id, dcb->target_lun,
+				list_size(&dcb->srb_waiting_list));
+                list_for_each_entry(srb, &dcb->srb_waiting_list, list)
+			SPRINTF(" %li", srb->cmd->pid);
+		if (!list_empty(&dcb->srb_going_list))
+			SPRINTF("\nDCB (%02i-%i): Going  : %i:",
+				dcb->target_id, dcb->target_lun,
+				list_size(&dcb->srb_going_list));
+		list_for_each_entry(srb, &dcb->srb_going_list, list)
+			SPRINTF(" %li", srb->cmd->pid);
+		if (!list_empty(&dcb->srb_waiting_list) || !list_empty(&dcb->srb_going_list))
+			SPRINTF("\n");
+	}
+
+	if (debug_enabled(DBG_1)) {
+		SPRINTF("DCB list for ACB %p:\n", acb);
+		list_for_each_entry(dcb, &acb->dcb_list, list) {
+			SPRINTF("%p -> ", dcb);
+		}
+		SPRINTF("END\n");
+	}
+
+	*start = buffer + offset;
+	DC395x_UNLOCK_IO(acb->scsi_host, flags);
+
+	if (pos - buffer < offset)
+		return 0;
+	else if (pos - buffer - offset < length)
+		return pos - buffer - offset;
+	else
+		return length;
+}
+
+
+static struct scsi_host_template dc395x_driver_template = {
+	.module                 = THIS_MODULE,
+	.proc_name              = DC395X_NAME,
+	.proc_info              = dc395x_proc_info,
+	.name                   = DC395X_BANNER " " DC395X_VERSION,
+	.queuecommand           = dc395x_queue_command,
+	.bios_param             = dc395x_bios_param,
+	.slave_alloc            = dc395x_slave_alloc,
+	.slave_destroy          = dc395x_slave_destroy,
+	.can_queue              = DC395x_MAX_CAN_QUEUE,
+	.this_id                = 7,
+	.sg_tablesize           = DC395x_MAX_SG_TABLESIZE,
+	.cmd_per_lun            = DC395x_MAX_CMD_PER_LUN,
+	.eh_abort_handler       = dc395x_eh_abort,
+	.eh_bus_reset_handler   = dc395x_eh_bus_reset,
+	.unchecked_isa_dma      = 0,
+	.use_clustering         = DISABLE_CLUSTERING,
+};
+
+
+/**
+ * banner_display - Display banner on first instance of driver
+ * initialized.
+ **/
+static void banner_display(void)
+{
+	static int banner_done = 0;
+	if (!banner_done)
+	{
+		dprintkl(KERN_INFO, "%s %s\n", DC395X_BANNER, DC395X_VERSION);
+		banner_done = 1;
+	}
+}
+
+
+/**
+ * dc395x_init_one - Initialise a single instance of the adapter.
+ *
+ * The PCI layer will call this once for each instance of the adapter
+ * that it finds in the system. The pci_dev strcuture indicates which
+ * instance we are being called from.
+ * 
+ * @dev: The PCI device to intialize.
+ * @id: Looks like a pointer to the entry in our pci device table
+ * that was actually matched by the PCI subsystem.
+ *
+ * Returns 0 on success, or an error code (-ve) on failure.
+ **/
+static int __devinit dc395x_init_one(struct pci_dev *dev,
+		const struct pci_device_id *id)
+{
+	struct Scsi_Host *scsi_host = NULL;
+	struct AdapterCtlBlk *acb = NULL;
+	unsigned long io_port_base;
+	unsigned int io_port_len;
+	unsigned int irq;
+	
+	dprintkdbg(DBG_0, "Init one instance (%s)\n", pci_name(dev));
+	banner_display();
+
+	if (pci_enable_device(dev))
+	{
+		dprintkl(KERN_INFO, "PCI Enable device failed.\n");
+		return -ENODEV;
+	}
+	io_port_base = pci_resource_start(dev, 0) & PCI_BASE_ADDRESS_IO_MASK;
+	io_port_len = pci_resource_len(dev, 0);
+	irq = dev->irq;
+	dprintkdbg(DBG_0, "IO_PORT=0x%04lx, IRQ=0x%x\n", io_port_base, dev->irq);
+
+	/* allocate scsi host information (includes out adapter) */
+	scsi_host = scsi_host_alloc(&dc395x_driver_template,
+				    sizeof(struct AdapterCtlBlk));
+	if (!scsi_host) {
+		dprintkl(KERN_INFO, "scsi_host_alloc failed\n");
+		goto fail;
+	}
+ 	acb = (struct AdapterCtlBlk*)scsi_host->hostdata;
+ 	acb->scsi_host = scsi_host;
+ 	acb->dev = dev;
+
+	/* initialise the adapter and everything we need */
+ 	if (adapter_init(acb, io_port_base, io_port_len, irq)) {
+		dprintkl(KERN_INFO, "adapter init failed\n");
+		goto fail;
+	}
+
+	pci_set_master(dev);
+
+	/* get the scsi mid level to scan for new devices on the bus */
+	if (scsi_add_host(scsi_host, &dev->dev)) {
+		dprintkl(KERN_ERR, "scsi_add_host failed\n");
+		goto fail;
+	}
+	pci_set_drvdata(dev, scsi_host);
+	scsi_scan_host(scsi_host);
+        	
+	return 0;
+
+fail:
+	if (acb != NULL)
+		adapter_uninit(acb);
+	if (scsi_host != NULL)
+		scsi_host_put(scsi_host);
+	pci_disable_device(dev);
+	return -ENODEV;
+}
+
+
+/**
+ * dc395x_remove_one - Called to remove a single instance of the
+ * adapter.
+ *
+ * @dev: The PCI device to intialize.
+ **/
+static void __devexit dc395x_remove_one(struct pci_dev *dev)
+{
+	struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
+	struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)(scsi_host->hostdata);
+
+	dprintkdbg(DBG_0, "dc395x_remove_one: acb=%p\n", acb);
+
+	scsi_remove_host(scsi_host);
+	adapter_uninit(acb);
+	pci_disable_device(dev);
+	scsi_host_put(scsi_host);
+	pci_set_drvdata(dev, NULL);
+}
+
+
+static struct pci_device_id dc395x_pci_table[] = {
+	{
+		.vendor		= PCI_VENDOR_ID_TEKRAM,
+		.device		= PCI_DEVICE_ID_TEKRAM_TRMS1040,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+	 },
+	{}			/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, dc395x_pci_table);
+
+
+static struct pci_driver dc395x_driver = {
+	.name           = DC395X_NAME,
+	.id_table       = dc395x_pci_table,
+	.probe          = dc395x_init_one,
+	.remove         = __devexit_p(dc395x_remove_one),
+};
+
+
+/**
+ * dc395x_module_init - Module initialization function
+ *
+ * Used by both module and built-in driver to initialise this driver.
+ **/
+static int __init dc395x_module_init(void)
+{
+	return pci_module_init(&dc395x_driver);
+}
+
+
+/**
+ * dc395x_module_exit - Module cleanup function.
+ **/
+static void __exit dc395x_module_exit(void)
+{
+	pci_unregister_driver(&dc395x_driver);
+}
+
+
+module_init(dc395x_module_init);
+module_exit(dc395x_module_exit);
+
+MODULE_AUTHOR("C.L. Huang / Erich Chen / Kurt Garloff");
+MODULE_DESCRIPTION("SCSI host adapter driver for Tekram TRM-S1040 based adapters: Tekram DC395 and DC315 series");
+MODULE_LICENSE("GPL");