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, 1369 insertions, 0 deletions

diff --git a/drivers/scsi/fd_mcs.c b/drivers/scsi/fd_mcs.c
new file mode 100644
index 0000000..770930e
--- /dev/null
+++ b/drivers/scsi/fd_mcs.c
@@ -0,0 +1,1369 @@
+/* fd_mcs.c -- Future Domain MCS 600/700 (or IBM OEM) driver
+ *
+ * FutureDomain MCS-600/700 v0.2 03/11/1998 by ZP Gu (zpg@castle.net)
+ *
+ * This driver is cloned from fdomain.* to specifically support
+ * the Future Domain MCS 600/700 MCA SCSI adapters. Some PS/2s
+ * also equipped with IBM Fast SCSI Adapter/A which is an OEM
+ * of MCS 700.
+ *
+ * This driver also supports Reply SB16/SCSI card (the SCSI part).
+ *
+ * What makes this driver different is that this driver is MCA only
+ * and it supports multiple adapters in the same system, IRQ 
+ * sharing, some driver statistics, and maps highest SCSI id to sda.
+ * All cards are auto-detected.
+ *
+ * Assumptions: TMC-1800/18C50/18C30, BIOS >= 3.4
+ *
+ * LILO command-line options:
+ *   fd_mcs=<FIFO_COUNT>[,<FIFO_SIZE>]
+ *
+ * ********************************************************
+ * Please see Copyrights/Comments in fdomain.* for credits.
+ * Following is from fdomain.c for acknowledgement:
+ *
+ * Created: Sun May  3 18:53:19 1992 by faith@cs.unc.edu
+ * Revised: Wed Oct  2 11:10:55 1996 by r.faith@ieee.org
+ * Author: Rickard E. Faith, faith@cs.unc.edu
+ * Copyright 1992, 1993, 1994, 1995, 1996 Rickard E. Faith
+ *
+ * $Id: fdomain.c,v 5.45 1996/10/02 15:13:06 root Exp $
+
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ **************************************************************************
+
+ NOTES ON USER DEFINABLE OPTIONS:
+
+ DEBUG: This turns on the printing of various debug information.
+
+ ENABLE_PARITY: This turns on SCSI parity checking.  With the current
+ driver, all attached devices must support SCSI parity.  If none of your
+ devices support parity, then you can probably get the driver to work by
+ turning this option off.  I have no way of testing this, however, and it
+ would appear that no one ever uses this option.
+
+ FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the
+ 18C30 chip have a 2k cache).  When this many 512 byte blocks are filled by
+ the SCSI device, an interrupt will be raised.  Therefore, this could be as
+ low as 0, or as high as 16.  Note, however, that values which are too high
+ or too low seem to prevent any interrupts from occurring, and thereby lock
+ up the machine.  I have found that 2 is a good number, but throughput may
+ be increased by changing this value to values which are close to 2.
+ Please let me know if you try any different values.
+ [*****Now a runtime option*****]
+
+ RESELECTION: This is no longer an option, since I gave up trying to
+ implement it in version 4.x of this driver.  It did not improve
+ performance at all and made the driver unstable (because I never found one
+ of the two race conditions which were introduced by the multiple
+ outstanding command code).  The instability seems a very high price to pay
+ just so that you don't have to wait for the tape to rewind.  If you want
+ this feature implemented, send me patches.  I'll be happy to send a copy
+ of my (broken) driver to anyone who would like to see a copy.
+
+ **************************************************************************/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/blkdev.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/proc_fs.h>
+#include <linux/delay.h>
+#include <linux/mca.h>
+#include <linux/spinlock.h>
+#include <scsi/scsicam.h>
+#include <linux/mca-legacy.h>
+
+#include <asm/io.h>
+#include <asm/system.h>
+
+#include "scsi.h"
+#include <scsi/scsi_host.h>
+
+#define DRIVER_VERSION "v0.2 by ZP Gu<zpg@castle.net>"
+
+/* START OF USER DEFINABLE OPTIONS */
+
+#define DEBUG            0	/* Enable debugging output */
+#define ENABLE_PARITY    1	/* Enable SCSI Parity */
+
+/* END OF USER DEFINABLE OPTIONS */
+
+#if DEBUG
+#define EVERY_ACCESS     0	/* Write a line on every scsi access */
+#define ERRORS_ONLY      1	/* Only write a line if there is an error */
+#define DEBUG_MESSAGES   1	/* Debug MESSAGE IN phase */
+#define DEBUG_ABORT      1	/* Debug abort() routine */
+#define DEBUG_RESET      1	/* Debug reset() routine */
+#define DEBUG_RACE       1	/* Debug interrupt-driven race condition */
+#else
+#define EVERY_ACCESS     0	/* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */
+#define ERRORS_ONLY      0
+#define DEBUG_MESSAGES   0
+#define DEBUG_ABORT      0
+#define DEBUG_RESET      0
+#define DEBUG_RACE       0
+#endif
+
+/* Errors are reported on the line, so we don't need to report them again */
+#if EVERY_ACCESS
+#undef ERRORS_ONLY
+#define ERRORS_ONLY      0
+#endif
+
+#if ENABLE_PARITY
+#define PARITY_MASK      0x08
+#else
+#define PARITY_MASK      0x00
+#endif
+
+enum chip_type {
+	unknown = 0x00,
+	tmc1800 = 0x01,
+	tmc18c50 = 0x02,
+	tmc18c30 = 0x03,
+};
+
+enum {
+	in_arbitration = 0x02,
+	in_selection = 0x04,
+	in_other = 0x08,
+	disconnect = 0x10,
+	aborted = 0x20,
+	sent_ident = 0x40,
+};
+
+enum in_port_type {
+	Read_SCSI_Data = 0,
+	SCSI_Status = 1,
+	TMC_Status = 2,
+	FIFO_Status = 3,	/* tmc18c50/tmc18c30 only */
+	Interrupt_Cond = 4,	/* tmc18c50/tmc18c30 only */
+	LSB_ID_Code = 5,
+	MSB_ID_Code = 6,
+	Read_Loopback = 7,
+	SCSI_Data_NoACK = 8,
+	Interrupt_Status = 9,
+	Configuration1 = 10,
+	Configuration2 = 11,	/* tmc18c50/tmc18c30 only */
+	Read_FIFO = 12,
+	FIFO_Data_Count = 14
+};
+
+enum out_port_type {
+	Write_SCSI_Data = 0,
+	SCSI_Cntl = 1,
+	Interrupt_Cntl = 2,
+	SCSI_Mode_Cntl = 3,
+	TMC_Cntl = 4,
+	Memory_Cntl = 5,	/* tmc18c50/tmc18c30 only */
+	Write_Loopback = 7,
+	IO_Control = 11,	/* tmc18c30 only */
+	Write_FIFO = 12
+};
+
+struct fd_hostdata {
+	unsigned long _bios_base;
+	int _bios_major;
+	int _bios_minor;
+	volatile int _in_command;
+	Scsi_Cmnd *_current_SC;
+	enum chip_type _chip;
+	int _adapter_mask;
+	int _fifo_count;	/* Number of 512 byte blocks before INTR */
+
+	char _adapter_name[64];
+#if DEBUG_RACE
+	volatile int _in_interrupt_flag;
+#endif
+
+	int _SCSI_Mode_Cntl_port;
+	int _FIFO_Data_Count_port;
+	int _Interrupt_Cntl_port;
+	int _Interrupt_Status_port;
+	int _Interrupt_Cond_port;
+	int _Read_FIFO_port;
+	int _Read_SCSI_Data_port;
+	int _SCSI_Cntl_port;
+	int _SCSI_Data_NoACK_port;
+	int _SCSI_Status_port;
+	int _TMC_Cntl_port;
+	int _TMC_Status_port;
+	int _Write_FIFO_port;
+	int _Write_SCSI_Data_port;
+
+	int _FIFO_Size;		/* = 0x2000;  8k FIFO for
+				   pre-tmc18c30 chips */
+	/* simple stats */
+	int _Bytes_Read;
+	int _Bytes_Written;
+	int _INTR_Processed;
+};
+
+#define FD_MAX_HOSTS 3		/* enough? */
+
+#define HOSTDATA(shpnt) ((struct fd_hostdata *) shpnt->hostdata)
+#define bios_base             (HOSTDATA(shpnt)->_bios_base)
+#define bios_major            (HOSTDATA(shpnt)->_bios_major)
+#define bios_minor            (HOSTDATA(shpnt)->_bios_minor)
+#define in_command            (HOSTDATA(shpnt)->_in_command)
+#define current_SC            (HOSTDATA(shpnt)->_current_SC)
+#define chip                  (HOSTDATA(shpnt)->_chip)
+#define adapter_mask          (HOSTDATA(shpnt)->_adapter_mask)
+#define FIFO_COUNT            (HOSTDATA(shpnt)->_fifo_count)
+#define adapter_name          (HOSTDATA(shpnt)->_adapter_name)
+#if DEBUG_RACE
+#define in_interrupt_flag     (HOSTDATA(shpnt)->_in_interrupt_flag)
+#endif
+#define SCSI_Mode_Cntl_port   (HOSTDATA(shpnt)->_SCSI_Mode_Cntl_port)
+#define FIFO_Data_Count_port  (HOSTDATA(shpnt)->_FIFO_Data_Count_port)
+#define Interrupt_Cntl_port   (HOSTDATA(shpnt)->_Interrupt_Cntl_port)
+#define Interrupt_Status_port (HOSTDATA(shpnt)->_Interrupt_Status_port)
+#define Interrupt_Cond_port   (HOSTDATA(shpnt)->_Interrupt_Cond_port)
+#define Read_FIFO_port        (HOSTDATA(shpnt)->_Read_FIFO_port)
+#define Read_SCSI_Data_port   (HOSTDATA(shpnt)->_Read_SCSI_Data_port)
+#define SCSI_Cntl_port        (HOSTDATA(shpnt)->_SCSI_Cntl_port)
+#define SCSI_Data_NoACK_port  (HOSTDATA(shpnt)->_SCSI_Data_NoACK_port)
+#define SCSI_Status_port      (HOSTDATA(shpnt)->_SCSI_Status_port)
+#define TMC_Cntl_port         (HOSTDATA(shpnt)->_TMC_Cntl_port)
+#define TMC_Status_port       (HOSTDATA(shpnt)->_TMC_Status_port)
+#define Write_FIFO_port       (HOSTDATA(shpnt)->_Write_FIFO_port)
+#define Write_SCSI_Data_port  (HOSTDATA(shpnt)->_Write_SCSI_Data_port)
+#define FIFO_Size             (HOSTDATA(shpnt)->_FIFO_Size)
+#define Bytes_Read            (HOSTDATA(shpnt)->_Bytes_Read)
+#define Bytes_Written         (HOSTDATA(shpnt)->_Bytes_Written)
+#define INTR_Processed        (HOSTDATA(shpnt)->_INTR_Processed)
+
+struct fd_mcs_adapters_struct {
+	char *name;
+	int id;
+	enum chip_type fd_chip;
+	int fifo_size;
+	int fifo_count;
+};
+
+#define REPLY_ID 0x5137
+
+static struct fd_mcs_adapters_struct fd_mcs_adapters[] = {
+	{"Future Domain SCSI Adapter MCS-700(18C50)",
+	 0x60e9,
+	 tmc18c50,
+	 0x2000,
+	 4},
+	{"Future Domain SCSI Adapter MCS-600/700(TMC-1800)",
+	 0x6127,
+	 tmc1800,
+	 0x2000,
+	 4},
+	{"Reply Sound Blaster/SCSI Adapter",
+	 REPLY_ID,
+	 tmc18c30,
+	 0x800,
+	 2},
+};
+
+#define FD_BRDS sizeof(fd_mcs_adapters)/sizeof(struct fd_mcs_adapters_struct)
+
+static irqreturn_t fd_mcs_intr(int irq, void *dev_id, struct pt_regs *regs);
+
+static unsigned long addresses[] = { 0xc8000, 0xca000, 0xce000, 0xde000 };
+static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
+static unsigned short interrupts[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
+
+/* host information */
+static int found = 0;
+static struct Scsi_Host *hosts[FD_MAX_HOSTS + 1] = { NULL };
+
+static int user_fifo_count = 0;
+static int user_fifo_size = 0;
+
+static int __init fd_mcs_setup(char *str)
+{
+	static int done_setup = 0;
+	int ints[3];
+
+	get_options(str, 3, ints);
+	if (done_setup++ || ints[0] < 1 || ints[0] > 2 || ints[1] < 1 || ints[1] > 16) {
+		printk("fd_mcs: usage: fd_mcs=FIFO_COUNT, FIFO_SIZE\n");
+		return 0;
+	}
+
+	user_fifo_count = ints[0] >= 1 ? ints[1] : 0;
+	user_fifo_size = ints[0] >= 2 ? ints[2] : 0;
+	return 1;
+}
+
+__setup("fd_mcs=", fd_mcs_setup);
+
+static void print_banner(struct Scsi_Host *shpnt)
+{
+	printk("scsi%d <fd_mcs>: ", shpnt->host_no);
+
+	if (bios_base) {
+		printk("BIOS at 0x%lX", bios_base);
+	} else {
+		printk("No BIOS");
+	}
+
+	printk(", HostID %d, %s Chip, IRQ %d, IO 0x%lX\n", shpnt->this_id, chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? "TMC-18C30" : (chip == tmc1800 ? "TMC-1800" : "Unknown")), shpnt->irq, shpnt->io_port);
+}
+
+
+static void do_pause(unsigned amount)
+{				/* Pause for amount*10 milliseconds */
+	do {
+		mdelay(10);
+	} while (--amount);
+}
+
+static void fd_mcs_make_bus_idle(struct Scsi_Host *shpnt)
+{
+	outb(0, SCSI_Cntl_port);
+	outb(0, SCSI_Mode_Cntl_port);
+	if (chip == tmc18c50 || chip == tmc18c30)
+		outb(0x21 | PARITY_MASK, TMC_Cntl_port);	/* Clear forced intr. */
+	else
+		outb(0x01 | PARITY_MASK, TMC_Cntl_port);
+}
+
+static int fd_mcs_detect(Scsi_Host_Template * tpnt)
+{
+	int loop;
+	struct Scsi_Host *shpnt;
+
+	/* get id, port, bios, irq */
+	int slot;
+	u_char pos2, pos3, pos4;
+	int id, port, irq;
+	unsigned long bios;
+
+	/* if not MCA machine, return */
+	if (!MCA_bus)
+		return 0;
+
+	/* changeable? */
+	id = 7;
+
+	for (loop = 0; loop < FD_BRDS; loop++) {
+		slot = 0;
+		while (MCA_NOTFOUND != (slot = mca_find_adapter(fd_mcs_adapters[loop].id, slot))) {
+
+			/* if we get this far, an adapter has been detected and is
+			   enabled */
+
+			printk(KERN_INFO "scsi  <fd_mcs>: %s at slot %d\n", fd_mcs_adapters[loop].name, slot + 1);
+
+			pos2 = mca_read_stored_pos(slot, 2);
+			pos3 = mca_read_stored_pos(slot, 3);
+			pos4 = mca_read_stored_pos(slot, 4);
+
+			/* ready for next probe */
+			slot++;
+
+			if (fd_mcs_adapters[loop].id == REPLY_ID) {	/* reply card */
+				static int reply_irq[] = { 10, 11, 14, 15 };
+
+				bios = 0;	/* no bios */
+
+				if (pos2 & 0x2)
+					port = ports[pos4 & 0x3];
+				else
+					continue;
+
+				/* can't really disable it, same as irq=10 */
+				irq = reply_irq[((pos4 >> 2) & 0x1) + 2 * ((pos4 >> 4) & 0x1)];
+			} else {
+				bios = addresses[pos2 >> 6];
+				port = ports[(pos2 >> 4) & 0x03];
+				irq = interrupts[(pos2 >> 1) & 0x07];
+			}
+
+			if (irq) {
+				/* claim the slot */
+				mca_set_adapter_name(slot - 1, fd_mcs_adapters[loop].name);
+
+				/* check irq/region */
+				if (request_irq(irq, fd_mcs_intr, SA_SHIRQ, "fd_mcs", hosts)) {
+					printk(KERN_ERR "fd_mcs: interrupt is not available, skipping...\n");
+					continue;
+				}
+
+				/* request I/O region */
+				if (request_region(port, 0x10, "fd_mcs")) {
+					printk(KERN_ERR "fd_mcs: I/O region is already in use, skipping...\n");
+					continue;
+				}
+				/* register */
+				if (!(shpnt = scsi_register(tpnt, sizeof(struct fd_hostdata)))) {
+					printk(KERN_ERR "fd_mcs: scsi_register() failed\n");
+					release_region(port, 0x10);
+					free_irq(irq, hosts);
+					continue;
+				}
+
+
+				/* save name */
+				strcpy(adapter_name, fd_mcs_adapters[loop].name);
+
+				/* chip/fifo */
+				chip = fd_mcs_adapters[loop].fd_chip;
+				/* use boot time value if available */
+				FIFO_COUNT = user_fifo_count ? user_fifo_count : fd_mcs_adapters[loop].fifo_count;
+				FIFO_Size = user_fifo_size ? user_fifo_size : fd_mcs_adapters[loop].fifo_size;
+
+/* FIXME: Do we need to keep this bit of code inside NOT_USED around at all? */
+#ifdef NOT_USED
+				/* *************************************************** */
+				/* Try to toggle 32-bit mode.  This only
+				   works on an 18c30 chip.  (User reports
+				   say this works, so we should switch to
+				   it in the near future.) */
+				outb(0x80, port + IO_Control);
+				if ((inb(port + Configuration2) & 0x80) == 0x80) {
+					outb(0x00, port + IO_Control);
+					if ((inb(port + Configuration2) & 0x80) == 0x00) {
+						chip = tmc18c30;
+						FIFO_Size = 0x800;	/* 2k FIFO */
+
+						printk("FIRST: chip=%s, fifo_size=0x%x\n", (chip == tmc18c30) ? "tmc18c30" : "tmc18c50", FIFO_Size);
+					}
+				}
+
+				/* That should have worked, but appears to
+				   have problems.  Let's assume it is an
+				   18c30 if the RAM is disabled. */
+
+				if (inb(port + Configuration2) & 0x02) {
+					chip = tmc18c30;
+					FIFO_Size = 0x800;	/* 2k FIFO */
+
+					printk("SECOND: chip=%s, fifo_size=0x%x\n", (chip == tmc18c30) ? "tmc18c30" : "tmc18c50", FIFO_Size);
+				}
+				/* *************************************************** */
+#endif
+
+				/* IBM/ANSI scsi scan ordering */
+				/* Stick this back in when the scsi.c changes are there */
+				shpnt->reverse_ordering = 1;
+
+
+				/* saving info */
+				hosts[found++] = shpnt;
+
+				shpnt->this_id = id;
+				shpnt->irq = irq;
+				shpnt->io_port = port;
+				shpnt->n_io_port = 0x10;
+
+				/* save */
+				bios_base = bios;
+				adapter_mask = (1 << id);
+
+				/* save more */
+				SCSI_Mode_Cntl_port = port + SCSI_Mode_Cntl;
+				FIFO_Data_Count_port = port + FIFO_Data_Count;
+				Interrupt_Cntl_port = port + Interrupt_Cntl;
+				Interrupt_Status_port = port + Interrupt_Status;
+				Interrupt_Cond_port = port + Interrupt_Cond;
+				Read_FIFO_port = port + Read_FIFO;
+				Read_SCSI_Data_port = port + Read_SCSI_Data;
+				SCSI_Cntl_port = port + SCSI_Cntl;
+				SCSI_Data_NoACK_port = port + SCSI_Data_NoACK;
+				SCSI_Status_port = port + SCSI_Status;
+				TMC_Cntl_port = port + TMC_Cntl;
+				TMC_Status_port = port + TMC_Status;
+				Write_FIFO_port = port + Write_FIFO;
+				Write_SCSI_Data_port = port + Write_SCSI_Data;
+
+				Bytes_Read = 0;
+				Bytes_Written = 0;
+				INTR_Processed = 0;
+
+				/* say something */
+				print_banner(shpnt);
+
+				/* reset */
+				outb(1, SCSI_Cntl_port);
+				do_pause(2);
+				outb(0, SCSI_Cntl_port);
+				do_pause(115);
+				outb(0, SCSI_Mode_Cntl_port);
+				outb(PARITY_MASK, TMC_Cntl_port);
+				/* done reset */
+			}
+		}
+
+		if (found == FD_MAX_HOSTS) {
+			printk("fd_mcs: detecting reached max=%d host adapters.\n", FD_MAX_HOSTS);
+			break;
+		}
+	}
+
+	return found;
+}
+
+static const char *fd_mcs_info(struct Scsi_Host *shpnt)
+{
+	return adapter_name;
+}
+
+static int TOTAL_INTR = 0;
+
+/*
+ * inout : decides on the direction of the dataflow and the meaning of the 
+ *         variables
+ * buffer: If inout==FALSE data is being written to it else read from it
+ * *start: If inout==FALSE start of the valid data in the buffer
+ * offset: If inout==FALSE offset from the beginning of the imaginary file 
+ *         from which we start writing into the buffer
+ * length: If inout==FALSE max number of bytes to be written into the buffer 
+ *         else number of bytes in the buffer
+ */
+static int fd_mcs_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout)
+{
+	int len = 0;
+
+	if (inout)
+		return (-ENOSYS);
+
+	*start = buffer + offset;
+
+	len += sprintf(buffer + len, "Future Domain MCS-600/700 Driver %s\n", DRIVER_VERSION);
+	len += sprintf(buffer + len, "HOST #%d: %s\n", shpnt->host_no, adapter_name);
+	len += sprintf(buffer + len, "FIFO Size=0x%x, FIFO Count=%d\n", FIFO_Size, FIFO_COUNT);
+	len += sprintf(buffer + len, "DriverCalls=%d, Interrupts=%d, BytesRead=%d, BytesWrite=%d\n\n", TOTAL_INTR, INTR_Processed, Bytes_Read, Bytes_Written);
+
+	if ((len -= offset) <= 0)
+		return 0;
+	if (len > length)
+		len = length;
+	return len;
+}
+
+static int fd_mcs_select(struct Scsi_Host *shpnt, int target)
+{
+	int status;
+	unsigned long timeout;
+
+	outb(0x82, SCSI_Cntl_port);	/* Bus Enable + Select */
+	outb(adapter_mask | (1 << target), SCSI_Data_NoACK_port);
+
+	/* Stop arbitration and enable parity */
+	outb(PARITY_MASK, TMC_Cntl_port);
+
+	timeout = 350;		/* 350mS -- because of timeouts
+				   (was 250mS) */
+
+	do {
+		status = inb(SCSI_Status_port);	/* Read adapter status */
+		if (status & 1) {	/* Busy asserted */
+			/* Enable SCSI Bus (on error, should make bus idle with 0) */
+			outb(0x80, SCSI_Cntl_port);
+			return 0;
+		}
+		udelay(1000);	/* wait one msec */
+	} while (--timeout);
+
+	/* Make bus idle */
+	fd_mcs_make_bus_idle(shpnt);
+#if EVERY_ACCESS
+	if (!target)
+		printk("Selection failed\n");
+#endif
+#if ERRORS_ONLY
+	if (!target) {
+		static int flag = 0;
+
+		if (!flag)	/* Skip first failure for all chips. */
+			++flag;
+		else
+			printk("fd_mcs: Selection failed\n");
+	}
+#endif
+	return 1;
+}
+
+static void my_done(struct Scsi_Host *shpnt, int error)
+{
+	if (in_command) {
+		in_command = 0;
+		outb(0x00, Interrupt_Cntl_port);
+		fd_mcs_make_bus_idle(shpnt);
+		current_SC->result = error;
+		current_SC->scsi_done(current_SC);
+	} else {
+		panic("fd_mcs: my_done() called outside of command\n");
+	}
+#if DEBUG_RACE
+	in_interrupt_flag = 0;
+#endif
+}
+
+/* only my_done needs to be protected  */
+static irqreturn_t fd_mcs_intr(int irq, void *dev_id, struct pt_regs *regs)
+{
+	unsigned long flags;
+	int status;
+	int done = 0;
+	unsigned data_count, tmp_count;
+
+	int i = 0;
+	struct Scsi_Host *shpnt;
+
+	TOTAL_INTR++;
+
+	/* search for one adapter-response on shared interrupt */
+	while ((shpnt = hosts[i++])) {
+		if ((inb(TMC_Status_port)) & 1)
+			break;
+	}
+
+	/* return if some other device on this IRQ caused the interrupt */
+	if (!shpnt) {
+		return IRQ_NONE;
+	}
+
+	INTR_Processed++;
+
+	outb(0x00, Interrupt_Cntl_port);
+
+	/* Abort calls my_done, so we do nothing here. */
+	if (current_SC->SCp.phase & aborted) {
+#if DEBUG_ABORT
+		printk("Interrupt after abort, ignoring\n");
+#endif
+		/* return IRQ_HANDLED; */
+	}
+#if DEBUG_RACE
+	++in_interrupt_flag;
+#endif
+
+	if (current_SC->SCp.phase & in_arbitration) {
+		status = inb(TMC_Status_port);	/* Read adapter status */
+		if (!(status & 0x02)) {
+#if EVERY_ACCESS
+			printk(" AFAIL ");
+#endif
+			spin_lock_irqsave(shpnt->host_lock, flags);
+			my_done(shpnt, DID_BUS_BUSY << 16);
+			spin_unlock_irqrestore(shpnt->host_lock, flags);
+			return IRQ_HANDLED;
+		}
+		current_SC->SCp.phase = in_selection;
+
+		outb(0x40 | FIFO_COUNT, Interrupt_Cntl_port);
+
+		outb(0x82, SCSI_Cntl_port);	/* Bus Enable + Select */
+		outb(adapter_mask | (1 << current_SC->device->id), SCSI_Data_NoACK_port);
+
+		/* Stop arbitration and enable parity */
+		outb(0x10 | PARITY_MASK, TMC_Cntl_port);
+#if DEBUG_RACE
+		in_interrupt_flag = 0;
+#endif
+		return IRQ_HANDLED;
+	} else if (current_SC->SCp.phase & in_selection) {
+		status = inb(SCSI_Status_port);
+		if (!(status & 0x01)) {
+			/* Try again, for slow devices */
+			if (fd_mcs_select(shpnt, current_SC->device->id)) {
+#if EVERY_ACCESS
+				printk(" SFAIL ");
+#endif
+				spin_lock_irqsave(shpnt->host_lock, flags);
+				my_done(shpnt, DID_NO_CONNECT << 16);
+				spin_unlock_irqrestore(shpnt->host_lock, flags);
+				return IRQ_HANDLED;
+			} else {
+#if EVERY_ACCESS
+				printk(" AltSel ");
+#endif
+				/* Stop arbitration and enable parity */
+				outb(0x10 | PARITY_MASK, TMC_Cntl_port);
+			}
+		}
+		current_SC->SCp.phase = in_other;
+		outb(0x90 | FIFO_COUNT, Interrupt_Cntl_port);
+		outb(0x80, SCSI_Cntl_port);
+#if DEBUG_RACE
+		in_interrupt_flag = 0;
+#endif
+		return IRQ_HANDLED;
+	}
+
+	/* current_SC->SCp.phase == in_other: this is the body of the routine */
+
+	status = inb(SCSI_Status_port);
+
+	if (status & 0x10) {	/* REQ */
+
+		switch (status & 0x0e) {
+
+		case 0x08:	/* COMMAND OUT */
+			outb(current_SC->cmnd[current_SC->SCp.sent_command++], Write_SCSI_Data_port);
+#if EVERY_ACCESS
+			printk("CMD = %x,", current_SC->cmnd[current_SC->SCp.sent_command - 1]);
+#endif
+			break;
+		case 0x00:	/* DATA OUT -- tmc18c50/tmc18c30 only */
+			if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
+				current_SC->SCp.have_data_in = -1;
+				outb(0xd0 | PARITY_MASK, TMC_Cntl_port);
+			}
+			break;
+		case 0x04:	/* DATA IN -- tmc18c50/tmc18c30 only */
+			if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
+				current_SC->SCp.have_data_in = 1;
+				outb(0x90 | PARITY_MASK, TMC_Cntl_port);
+			}
+			break;
+		case 0x0c:	/* STATUS IN */
+			current_SC->SCp.Status = inb(Read_SCSI_Data_port);
+#if EVERY_ACCESS
+			printk("Status = %x, ", current_SC->SCp.Status);
+#endif
+#if ERRORS_ONLY
+			if (current_SC->SCp.Status && current_SC->SCp.Status != 2 && current_SC->SCp.Status != 8) {
+				printk("ERROR fd_mcs: target = %d, command = %x, status = %x\n", current_SC->device->id, current_SC->cmnd[0], current_SC->SCp.Status);
+			}
+#endif
+			break;
+		case 0x0a:	/* MESSAGE OUT */
+			outb(MESSAGE_REJECT, Write_SCSI_Data_port);	/* Reject */
+			break;
+		case 0x0e:	/* MESSAGE IN */
+			current_SC->SCp.Message = inb(Read_SCSI_Data_port);
+#if EVERY_ACCESS
+			printk("Message = %x, ", current_SC->SCp.Message);
+#endif
+			if (!current_SC->SCp.Message)
+				++done;
+#if DEBUG_MESSAGES || EVERY_ACCESS
+			if (current_SC->SCp.Message) {
+				printk("fd_mcs: message = %x\n", current_SC->SCp.Message);
+			}
+#endif
+			break;
+		}
+	}
+
+	if (chip == tmc1800 && !current_SC->SCp.have_data_in && (current_SC->SCp.sent_command >= current_SC->cmd_len)) {
+		/* We have to get the FIFO direction
+		   correct, so I've made a table based
+		   on the SCSI Standard of which commands
+		   appear to require a DATA OUT phase.
+		 */
+		/*
+		   p. 94: Command for all device types
+		   CHANGE DEFINITION            40 DATA OUT
+		   COMPARE                      39 DATA OUT
+		   COPY                         18 DATA OUT
+		   COPY AND VERIFY              3a DATA OUT
+		   INQUIRY                      12 
+		   LOG SELECT                   4c DATA OUT
+		   LOG SENSE                    4d
+		   MODE SELECT (6)              15 DATA OUT
+		   MODE SELECT (10)             55 DATA OUT
+		   MODE SENSE (6)               1a
+		   MODE SENSE (10)              5a
+		   READ BUFFER                  3c
+		   RECEIVE DIAGNOSTIC RESULTS   1c
+		   REQUEST SENSE                03
+		   SEND DIAGNOSTIC              1d DATA OUT
+		   TEST UNIT READY              00
+		   WRITE BUFFER                 3b DATA OUT
+
+		   p.178: Commands for direct-access devices (not listed on p. 94)
+		   FORMAT UNIT                  04 DATA OUT
+		   LOCK-UNLOCK CACHE            36
+		   PRE-FETCH                    34
+		   PREVENT-ALLOW MEDIUM REMOVAL 1e
+		   READ (6)/RECEIVE             08
+		   READ (10)                    3c
+		   READ CAPACITY                25
+		   READ DEFECT DATA (10)        37
+		   READ LONG                    3e
+		   REASSIGN BLOCKS              07 DATA OUT
+		   RELEASE                      17
+		   RESERVE                      16 DATA OUT
+		   REZERO UNIT/REWIND           01
+		   SEARCH DATA EQUAL (10)       31 DATA OUT
+		   SEARCH DATA HIGH (10)        30 DATA OUT
+		   SEARCH DATA LOW (10)         32 DATA OUT
+		   SEEK (6)                     0b
+		   SEEK (10)                    2b
+		   SET LIMITS (10)              33
+		   START STOP UNIT              1b
+		   SYNCHRONIZE CACHE            35
+		   VERIFY (10)                  2f
+		   WRITE (6)/PRINT/SEND         0a DATA OUT
+		   WRITE (10)/SEND              2a DATA OUT
+		   WRITE AND VERIFY (10)        2e DATA OUT
+		   WRITE LONG                   3f DATA OUT
+		   WRITE SAME                   41 DATA OUT ?
+
+		   p. 261: Commands for sequential-access devices (not previously listed)
+		   ERASE                        19
+		   LOAD UNLOAD                  1b
+		   LOCATE                       2b
+		   READ BLOCK LIMITS            05
+		   READ POSITION                34
+		   READ REVERSE                 0f
+		   RECOVER BUFFERED DATA        14
+		   SPACE                        11
+		   WRITE FILEMARKS              10 ?
+
+		   p. 298: Commands for printer devices (not previously listed)
+		   ****** NOT SUPPORTED BY THIS DRIVER, since 0b is SEEK (6) *****
+		   SLEW AND PRINT               0b DATA OUT  -- same as seek
+		   STOP PRINT                   1b
+		   SYNCHRONIZE BUFFER           10
+
+		   p. 315: Commands for processor devices (not previously listed)
+
+		   p. 321: Commands for write-once devices (not previously listed)
+		   MEDIUM SCAN                  38
+		   READ (12)                    a8
+		   SEARCH DATA EQUAL (12)       b1 DATA OUT
+		   SEARCH DATA HIGH (12)        b0 DATA OUT
+		   SEARCH DATA LOW (12)         b2 DATA OUT
+		   SET LIMITS (12)              b3
+		   VERIFY (12)                  af
+		   WRITE (12)                   aa DATA OUT
+		   WRITE AND VERIFY (12)        ae DATA OUT
+
+		   p. 332: Commands for CD-ROM devices (not previously listed)
+		   PAUSE/RESUME                 4b
+		   PLAY AUDIO (10)              45
+		   PLAY AUDIO (12)              a5
+		   PLAY AUDIO MSF               47
+		   PLAY TRACK RELATIVE (10)     49
+		   PLAY TRACK RELATIVE (12)     a9
+		   READ HEADER                  44
+		   READ SUB-CHANNEL             42
+		   READ TOC                     43
+
+		   p. 370: Commands for scanner devices (not previously listed)
+		   GET DATA BUFFER STATUS       34
+		   GET WINDOW                   25
+		   OBJECT POSITION              31
+		   SCAN                         1b
+		   SET WINDOW                   24 DATA OUT
+
+		   p. 391: Commands for optical memory devices (not listed)
+		   ERASE (10)                   2c
+		   ERASE (12)                   ac
+		   MEDIUM SCAN                  38 DATA OUT
+		   READ DEFECT DATA (12)        b7
+		   READ GENERATION              29
+		   READ UPDATED BLOCK           2d
+		   UPDATE BLOCK                 3d DATA OUT
+
+		   p. 419: Commands for medium changer devices (not listed)
+		   EXCHANGE MEDIUM              46
+		   INITIALIZE ELEMENT STATUS    07
+		   MOVE MEDIUM                  a5
+		   POSITION TO ELEMENT          2b
+		   READ ELEMENT STATUS          b8
+		   REQUEST VOL. ELEMENT ADDRESS b5
+		   SEND VOLUME TAG              b6 DATA OUT
+
+		   p. 454: Commands for communications devices (not listed previously)
+		   GET MESSAGE (6)              08
+		   GET MESSAGE (10)             28
+		   GET MESSAGE (12)             a8
+		 */
+
+		switch (current_SC->cmnd[0]) {
+		case CHANGE_DEFINITION:
+		case COMPARE:
+		case COPY:
+		case COPY_VERIFY:
+		case LOG_SELECT:
+		case MODE_SELECT:
+		case MODE_SELECT_10:
+		case SEND_DIAGNOSTIC:
+		case WRITE_BUFFER:
+
+		case FORMAT_UNIT:
+		case REASSIGN_BLOCKS:
+		case RESERVE:
+		case SEARCH_EQUAL:
+		case SEARCH_HIGH:
+		case SEARCH_LOW:
+		case WRITE_6:
+		case WRITE_10:
+		case WRITE_VERIFY:
+		case 0x3f:
+		case 0x41:
+
+		case 0xb1:
+		case 0xb0:
+		case 0xb2:
+		case 0xaa:
+		case 0xae:
+
+		case 0x24:
+
+		case 0x38:
+		case 0x3d:
+
+		case 0xb6:
+
+		case 0xea:	/* alternate number for WRITE LONG */
+
+			current_SC->SCp.have_data_in = -1;
+			outb(0xd0 | PARITY_MASK, TMC_Cntl_port);
+			break;
+
+		case 0x00:
+		default:
+
+			current_SC->SCp.have_data_in = 1;
+			outb(0x90 | PARITY_MASK, TMC_Cntl_port);
+			break;
+		}
+	}
+
+	if (current_SC->SCp.have_data_in == -1) {	/* DATA OUT */
+		while ((data_count = FIFO_Size - inw(FIFO_Data_Count_port)) > 512) {
+#if EVERY_ACCESS
+			printk("DC=%d, ", data_count);
+#endif
+			if (data_count > current_SC->SCp.this_residual)
+				data_count = current_SC->SCp.this_residual;
+			if (data_count > 0) {
+#if EVERY_ACCESS
+				printk("%d OUT, ", data_count);
+#endif
+				if (data_count == 1) {
+					Bytes_Written++;
+
+					outb(*current_SC->SCp.ptr++, Write_FIFO_port);
+					--current_SC->SCp.this_residual;
+				} else {
+					data_count >>= 1;
+					tmp_count = data_count << 1;
+					outsw(Write_FIFO_port, current_SC->SCp.ptr, data_count);
+					current_SC->SCp.ptr += tmp_count;
+					Bytes_Written += tmp_count;
+					current_SC->SCp.this_residual -= tmp_count;
+				}
+			}
+			if (!current_SC->SCp.this_residual) {
+				if (current_SC->SCp.buffers_residual) {
+					--current_SC->SCp.buffers_residual;
+					++current_SC->SCp.buffer;
+					current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset;
+					current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
+				} else
+					break;
+			}
+		}
+	} else if (current_SC->SCp.have_data_in == 1) {	/* DATA IN */
+		while ((data_count = inw(FIFO_Data_Count_port)) > 0) {
+#if EVERY_ACCESS
+			printk("DC=%d, ", data_count);
+#endif
+			if (data_count > current_SC->SCp.this_residual)
+				data_count = current_SC->SCp.this_residual;
+			if (data_count) {
+#if EVERY_ACCESS
+				printk("%d IN, ", data_count);
+#endif
+				if (data_count == 1) {
+					Bytes_Read++;
+					*current_SC->SCp.ptr++ = inb(Read_FIFO_port);
+					--current_SC->SCp.this_residual;
+				} else {
+					data_count >>= 1;	/* Number of words */
+					tmp_count = data_count << 1;
+					insw(Read_FIFO_port, current_SC->SCp.ptr, data_count);
+					current_SC->SCp.ptr += tmp_count;
+					Bytes_Read += tmp_count;
+					current_SC->SCp.this_residual -= tmp_count;
+				}
+			}
+			if (!current_SC->SCp.this_residual && current_SC->SCp.buffers_residual) {
+				--current_SC->SCp.buffers_residual;
+				++current_SC->SCp.buffer;
+				current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset;
+				current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
+			}
+		}
+	}
+
+	if (done) {
+#if EVERY_ACCESS
+		printk(" ** IN DONE %d ** ", current_SC->SCp.have_data_in);
+#endif
+
+#if ERRORS_ONLY
+		if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) {
+			if ((unsigned char) (*((char *) current_SC->request_buffer + 2)) & 0x0f) {
+				unsigned char key;
+				unsigned char code;
+				unsigned char qualifier;
+
+				key = (unsigned char) (*((char *) current_SC->request_buffer + 2)) & 0x0f;
+				code = (unsigned char) (*((char *) current_SC->request_buffer + 12));
+				qualifier = (unsigned char) (*((char *) current_SC->request_buffer + 13));
+
+				if (key != UNIT_ATTENTION && !(key == NOT_READY && code == 0x04 && (!qualifier || qualifier == 0x02 || qualifier == 0x01))
+				    && !(key == ILLEGAL_REQUEST && (code == 0x25 || code == 0x24 || !code)))
+
+					printk("fd_mcs: REQUEST SENSE " "Key = %x, Code = %x, Qualifier = %x\n", key, code, qualifier);
+			}
+		}
+#endif
+#if EVERY_ACCESS
+		printk("BEFORE MY_DONE. . .");
+#endif
+		spin_lock_irqsave(shpnt->host_lock, flags);
+		my_done(shpnt, (current_SC->SCp.Status & 0xff)
+			| ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16));
+		spin_unlock_irqrestore(shpnt->host_lock, flags);
+#if EVERY_ACCESS
+		printk("RETURNING.\n");
+#endif
+
+	} else {
+		if (current_SC->SCp.phase & disconnect) {
+			outb(0xd0 | FIFO_COUNT, Interrupt_Cntl_port);
+			outb(0x00, SCSI_Cntl_port);
+		} else {
+			outb(0x90 | FIFO_COUNT, Interrupt_Cntl_port);
+		}
+	}
+#if DEBUG_RACE
+	in_interrupt_flag = 0;
+#endif
+	return IRQ_HANDLED;
+}
+
+static int fd_mcs_release(struct Scsi_Host *shpnt)
+{
+	int i, this_host, irq_usage;
+
+	release_region(shpnt->io_port, shpnt->n_io_port);
+
+	this_host = -1;
+	irq_usage = 0;
+	for (i = 0; i < found; i++) {
+		if (shpnt == hosts[i])
+			this_host = i;
+		if (shpnt->irq == hosts[i]->irq)
+			irq_usage++;
+	}
+
+	/* only for the last one */
+	if (1 == irq_usage)
+		free_irq(shpnt->irq, hosts);
+
+	found--;
+
+	for (i = this_host; i < found; i++)
+		hosts[i] = hosts[i + 1];
+
+	hosts[found] = NULL;
+
+	return 0;
+}
+
+static int fd_mcs_queue(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
+{
+	struct Scsi_Host *shpnt = SCpnt->device->host;
+
+	if (in_command) {
+		panic("fd_mcs: fd_mcs_queue() NOT REENTRANT!\n");
+	}
+#if EVERY_ACCESS
+	printk("queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n", SCpnt->target, *(unsigned char *) SCpnt->cmnd, SCpnt->use_sg, SCpnt->request_bufflen);
+#endif
+
+	fd_mcs_make_bus_idle(shpnt);
+
+	SCpnt->scsi_done = done;	/* Save this for the done function */
+	current_SC = SCpnt;
+
+	/* Initialize static data */
+
+	if (current_SC->use_sg) {
+		current_SC->SCp.buffer = (struct scatterlist *) current_SC->request_buffer;
+		current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset;
+		current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
+		current_SC->SCp.buffers_residual = current_SC->use_sg - 1;
+	} else {
+		current_SC->SCp.ptr = (char *) current_SC->request_buffer;
+		current_SC->SCp.this_residual = current_SC->request_bufflen;
+		current_SC->SCp.buffer = NULL;
+		current_SC->SCp.buffers_residual = 0;
+	}
+
+
+	current_SC->SCp.Status = 0;
+	current_SC->SCp.Message = 0;
+	current_SC->SCp.have_data_in = 0;
+	current_SC->SCp.sent_command = 0;
+	current_SC->SCp.phase = in_arbitration;
+
+	/* Start arbitration */
+	outb(0x00, Interrupt_Cntl_port);
+	outb(0x00, SCSI_Cntl_port);	/* Disable data drivers */
+	outb(adapter_mask, SCSI_Data_NoACK_port);	/* Set our id bit */
+	in_command = 1;
+	outb(0x20, Interrupt_Cntl_port);
+	outb(0x14 | PARITY_MASK, TMC_Cntl_port);	/* Start arbitration */
+
+	return 0;
+}
+
+#if DEBUG_ABORT || DEBUG_RESET
+static void fd_mcs_print_info(Scsi_Cmnd * SCpnt)
+{
+	unsigned int imr;
+	unsigned int irr;
+	unsigned int isr;
+	struct Scsi_Host *shpnt = SCpnt->host;
+
+	if (!SCpnt || !SCpnt->host) {
+		printk("fd_mcs: cannot provide detailed information\n");
+	}
+
+	printk("%s\n", fd_mcs_info(SCpnt->host));
+	print_banner(SCpnt->host);
+	switch (SCpnt->SCp.phase) {
+	case in_arbitration:
+		printk("arbitration ");
+		break;
+	case in_selection:
+		printk("selection ");
+		break;
+	case in_other:
+		printk("other ");
+		break;
+	default:
+		printk("unknown ");
+		break;
+	}
+
+	printk("(%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n", SCpnt->SCp.phase, SCpnt->device->id, *(unsigned char *) SCpnt->cmnd, SCpnt->use_sg, SCpnt->request_bufflen);
+	printk("sent_command = %d, have_data_in = %d, timeout = %d\n", SCpnt->SCp.sent_command, SCpnt->SCp.have_data_in, SCpnt->timeout);
+#if DEBUG_RACE
+	printk("in_interrupt_flag = %d\n", in_interrupt_flag);
+#endif
+
+	imr = (inb(0x0a1) << 8) + inb(0x21);
+	outb(0x0a, 0xa0);
+	irr = inb(0xa0) << 8;
+	outb(0x0a, 0x20);
+	irr += inb(0x20);
+	outb(0x0b, 0xa0);
+	isr = inb(0xa0) << 8;
+	outb(0x0b, 0x20);
+	isr += inb(0x20);
+
+	/* Print out interesting information */
+	printk("IMR = 0x%04x", imr);
+	if (imr & (1 << shpnt->irq))
+		printk(" (masked)");
+	printk(", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr);
+
+	printk("SCSI Status      = 0x%02x\n", inb(SCSI_Status_port));
+	printk("TMC Status       = 0x%02x", inb(TMC_Status_port));
+	if (inb(TMC_Status_port) & 1)
+		printk(" (interrupt)");
+	printk("\n");
+	printk("Interrupt Status = 0x%02x", inb(Interrupt_Status_port));
+	if (inb(Interrupt_Status_port) & 0x08)
+		printk(" (enabled)");
+	printk("\n");
+	if (chip == tmc18c50 || chip == tmc18c30) {
+		printk("FIFO Status      = 0x%02x\n", inb(shpnt->io_port + FIFO_Status));
+		printk("Int. Condition   = 0x%02x\n", inb(shpnt->io_port + Interrupt_Cond));
+	}
+	printk("Configuration 1  = 0x%02x\n", inb(shpnt->io_port + Configuration1));
+	if (chip == tmc18c50 || chip == tmc18c30)
+		printk("Configuration 2  = 0x%02x\n", inb(shpnt->io_port + Configuration2));
+}
+#endif
+
+static int fd_mcs_abort(Scsi_Cmnd * SCpnt)
+{
+	struct Scsi_Host *shpnt = SCpnt->device->host;
+
+	unsigned long flags;
+#if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT
+	printk("fd_mcs: abort ");
+#endif
+
+	spin_lock_irqsave(shpnt->host_lock, flags);
+	if (!in_command) {
+#if EVERY_ACCESS || ERRORS_ONLY
+		printk(" (not in command)\n");
+#endif
+		spin_unlock_irqrestore(shpnt->host_lock, flags);
+		return FAILED;
+	} else
+		printk("\n");
+
+#if DEBUG_ABORT
+	fd_mcs_print_info(SCpnt);
+#endif
+
+	fd_mcs_make_bus_idle(shpnt);
+
+	current_SC->SCp.phase |= aborted;
+
+	current_SC->result = DID_ABORT << 16;
+
+	/* Aborts are not done well. . . */
+	my_done(shpnt, DID_ABORT << 16);
+
+	spin_unlock_irqrestore(shpnt->host_lock, flags);
+	return SUCCESS;
+}
+
+static int fd_mcs_host_reset(Scsi_Cmnd * SCpnt)
+{
+	return FAILED;
+}
+
+static int fd_mcs_device_reset(Scsi_Cmnd * SCpnt) 
+{
+	return FAILED;
+}
+
+static int fd_mcs_bus_reset(Scsi_Cmnd * SCpnt) {
+	struct Scsi_Host *shpnt = SCpnt->device->host;
+
+#if DEBUG_RESET
+	static int called_once = 0;
+#endif
+
+#if ERRORS_ONLY
+	if (SCpnt)
+		printk("fd_mcs: SCSI Bus Reset\n");
+#endif
+
+#if DEBUG_RESET
+	if (called_once)
+		fd_mcs_print_info(current_SC);
+	called_once = 1;
+#endif
+
+	outb(1, SCSI_Cntl_port);
+	do_pause(2);
+	outb(0, SCSI_Cntl_port);
+	do_pause(115);
+	outb(0, SCSI_Mode_Cntl_port);
+	outb(PARITY_MASK, TMC_Cntl_port);
+
+	/* Unless this is the very first call (i.e., SCPnt == NULL), everything
+	   is probably hosed at this point.  We will, however, try to keep
+	   things going by informing the high-level code that we need help. */
+		return SUCCESS;
+}
+
+#include <scsi/scsi_ioctl.h>
+
+static int fd_mcs_biosparam(struct scsi_device * disk, struct block_device *bdev,
+			    sector_t capacity, int *info_array) 
+{
+	unsigned char *p = scsi_bios_ptable(bdev);
+	int size = capacity;
+
+	/* BIOS >= 3.4 for MCA cards */
+	/* This algorithm was provided by Future Domain (much thanks!). */
+
+	if (p && p[65] == 0xaa && p[64] == 0x55	/* Partition table valid */
+	    && p[4]) {	/* Partition type */
+		/* The partition table layout is as follows:
+
+		   Start: 0x1b3h
+		   Offset: 0 = partition status
+		   1 = starting head
+		   2 = starting sector and cylinder (word, encoded)
+		   4 = partition type
+		   5 = ending head
+		   6 = ending sector and cylinder (word, encoded)
+		   8 = starting absolute sector (double word)
+		   c = number of sectors (double word)
+		   Signature: 0x1fe = 0x55aa
+
+		   So, this algorithm assumes:
+		   1) the first partition table is in use,
+		   2) the data in the first entry is correct, and
+		   3) partitions never divide cylinders
+
+		   Note that (1) may be FALSE for NetBSD (and other BSD flavors),
+		   as well as for Linux.  Note also, that Linux doesn't pay any
+		   attention to the fields that are used by this algorithm -- it
+		   only uses the absolute sector data.  Recent versions of Linux's
+		   fdisk(1) will fill this data in correctly, and forthcoming
+		   versions will check for consistency.
+
+		   Checking for a non-zero partition type is not part of the
+		   Future Domain algorithm, but it seemed to be a reasonable thing
+		   to do, especially in the Linux and BSD worlds. */
+
+		info_array[0] = p[5] + 1;	/* heads */
+		info_array[1] = p[6] & 0x3f;	/* sectors */
+	} else {
+		/* Note that this new method guarantees that there will always be
+		   less than 1024 cylinders on a platter.  This is good for drives
+		   up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */
+		if ((unsigned int) size >= 0x7e0000U) 
+		{
+			info_array[0] = 0xff;	/* heads   = 255 */
+			info_array[1] = 0x3f;	/* sectors =  63 */
+		} else if ((unsigned int) size >= 0x200000U) {
+			info_array[0] = 0x80;	/* heads   = 128 */
+			info_array[1] = 0x3f;	/* sectors =  63 */
+		} else {
+			info_array[0] = 0x40;	/* heads   =  64 */
+			info_array[1] = 0x20;	/* sectors =  32 */
+		}
+	}
+	/* For both methods, compute the cylinders */
+	info_array[2] = (unsigned int) size / (info_array[0] * info_array[1]);
+	kfree(p);
+	return 0;
+}
+
+static Scsi_Host_Template driver_template = {
+	.proc_name			= "fd_mcs",
+	.proc_info			= fd_mcs_proc_info,
+	.detect				= fd_mcs_detect,
+	.release			= fd_mcs_release,
+	.info				= fd_mcs_info,
+	.queuecommand   		= fd_mcs_queue, 
+	.eh_abort_handler		= fd_mcs_abort,
+	.eh_bus_reset_handler		= fd_mcs_bus_reset,
+	.eh_host_reset_handler		= fd_mcs_host_reset,
+	.eh_device_reset_handler	= fd_mcs_device_reset,
+	.bios_param     		= fd_mcs_biosparam,
+	.can_queue      		= 1,
+	.this_id        		= 7,
+	.sg_tablesize   		= 64,
+	.cmd_per_lun    		= 1,
+	.use_clustering 		= DISABLE_CLUSTERING,
+};
+#include "scsi_module.c"