Initial import

1 files changed, 741 insertions, 0 deletions

diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
new file mode 100644
index 000000000..f8d2478b1
--- /dev/null
+++ b/drivers/scsi/g_NCR5380.c
@@ -0,0 +1,741 @@
+/*
+ * Generic Generic NCR5380 driver
+ *	
+ * Copyright 1993, Drew Eckhardt
+ *	Visionary Computing
+ *	(Unix and Linux consulting and custom programming)
+ *	drew@colorado.edu
+ *      +1 (303) 440-4894
+ *
+ * NCR53C400 extensions (c) 1994,1995,1996, Kevin Lentin
+ *    K.Lentin@cs.monash.edu.au
+ *
+ * NCR53C400A extensions (c) 1996, Ingmar Baumgart
+ *    ingmar@gonzo.schwaben.de
+ *
+ * DTC3181E extensions (c) 1997, Ronald van Cuijlenborg
+ * ronald.van.cuijlenborg@tip.nl or nutty@dds.nl
+ *
+ * Added ISAPNP support for DTC436 adapters,
+ * Thomas Sailer, sailer@ife.ee.ethz.ch
+ */
+
+/* 
+ * TODO : flesh out DMA support, find some one actually using this (I have
+ * 	a memory mapped Trantor board that works fine)
+ */
+
+/*
+ * The card is detected and initialized in one of several ways : 
+ * 1.  With command line overrides - NCR5380=port,irq may be 
+ *     used on the LILO command line to override the defaults.
+ *
+ * 2.  With the GENERIC_NCR5380_OVERRIDE compile time define.  This is 
+ *     specified as an array of address, irq, dma, board tuples.  Ie, for
+ *     one board at 0x350, IRQ5, no dma, I could say  
+ *     -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}}
+ * 
+ * -1 should be specified for no or DMA interrupt, -2 to autoprobe for an 
+ * 	IRQ line if overridden on the command line.
+ *
+ * 3.  When included as a module, with arguments passed on the command line:
+ *         ncr_irq=xx	the interrupt
+ *         ncr_addr=xx  the port or base address (for port or memory
+ *              	mapped, resp.)
+ *         ncr_dma=xx	the DMA
+ *         ncr_5380=1	to set up for a NCR5380 board
+ *         ncr_53c400=1	to set up for a NCR53C400 board
+ *     e.g.
+ *     modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1
+ *       for a port mapped NCR5380 board or
+ *     modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1
+ *       for a memory mapped NCR53C400 board with interrupts disabled.
+ * 
+ * 255 should be specified for no or DMA interrupt, 254 to autoprobe for an 
+ * 	IRQ line if overridden on the command line.
+ *     
+ */
+
+/* settings for DTC3181E card with only Mustek scanner attached */
+#define USLEEP_POLL	msecs_to_jiffies(10)
+#define USLEEP_SLEEP	msecs_to_jiffies(200)
+#define USLEEP_WAITLONG	msecs_to_jiffies(5000)
+
+#define AUTOPROBE_IRQ
+
+#ifdef CONFIG_SCSI_GENERIC_NCR53C400
+#define NCR53C400_PSEUDO_DMA 1
+#define PSEUDO_DMA
+#define NCR53C400
+#endif
+
+#include <asm/io.h>
+#include <linux/signal.h>
+#include <linux/blkdev.h>
+#include <scsi/scsi_host.h>
+#include "g_NCR5380.h"
+#include "NCR5380.h"
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/isapnp.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+
+#define NCR_NOT_SET 0
+static int ncr_irq = NCR_NOT_SET;
+static int ncr_dma = NCR_NOT_SET;
+static int ncr_addr = NCR_NOT_SET;
+static int ncr_5380 = NCR_NOT_SET;
+static int ncr_53c400 = NCR_NOT_SET;
+static int ncr_53c400a = NCR_NOT_SET;
+static int dtc_3181e = NCR_NOT_SET;
+
+static struct override {
+	NCR5380_map_type NCR5380_map_name;
+	int irq;
+	int dma;
+	int board;		/* Use NCR53c400, Ricoh, etc. extensions ? */
+} overrides
+#ifdef GENERIC_NCR5380_OVERRIDE
+[] __initdata = GENERIC_NCR5380_OVERRIDE;
+#else
+[1] __initdata = { { 0,},};
+#endif
+
+#define NO_OVERRIDES ARRAY_SIZE(overrides)
+
+#ifndef MODULE
+
+/**
+ *	internal_setup		-	handle lilo command string override
+ *	@board:	BOARD_* identifier for the board
+ *	@str: unused
+ *	@ints: numeric parameters
+ *
+ * 	Do LILO command line initialization of the overrides array. Display
+ *	errors when needed
+ *
+ *	Locks: none
+ */
+
+static void __init internal_setup(int board, char *str, int *ints)
+{
+	static int commandline_current = 0;
+	switch (board) {
+	case BOARD_NCR5380:
+		if (ints[0] != 2 && ints[0] != 3) {
+			printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
+			return;
+		}
+		break;
+	case BOARD_NCR53C400:
+		if (ints[0] != 2) {
+			printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
+			return;
+		}
+		break;
+	case BOARD_NCR53C400A:
+		if (ints[0] != 2) {
+			printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n");
+			return;
+		}
+		break;
+	case BOARD_DTC3181E:
+		if (ints[0] != 2) {
+			printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n");
+			return;
+		}
+		break;
+	}
+
+	if (commandline_current < NO_OVERRIDES) {
+		overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1];
+		overrides[commandline_current].irq = ints[2];
+		if (ints[0] == 3)
+			overrides[commandline_current].dma = ints[3];
+		else
+			overrides[commandline_current].dma = DMA_NONE;
+		overrides[commandline_current].board = board;
+		++commandline_current;
+	}
+}
+
+
+/**
+ * 	do_NCR53C80_setup		-	set up entry point
+ *	@str: unused
+ *
+ *	Setup function invoked at boot to parse the ncr5380= command
+ *	line.
+ */
+
+static int __init do_NCR5380_setup(char *str)
+{
+	int ints[10];
+
+	get_options(str, ARRAY_SIZE(ints), ints);
+	internal_setup(BOARD_NCR5380, str, ints);
+	return 1;
+}
+
+/**
+ * 	do_NCR53C400_setup		-	set up entry point
+ *	@str: unused
+ *	@ints: integer parameters from kernel setup code
+ *
+ *	Setup function invoked at boot to parse the ncr53c400= command
+ *	line.
+ */
+
+static int __init do_NCR53C400_setup(char *str)
+{
+	int ints[10];
+
+	get_options(str, ARRAY_SIZE(ints), ints);
+	internal_setup(BOARD_NCR53C400, str, ints);
+	return 1;
+}
+
+/**
+ * 	do_NCR53C400A_setup	-	set up entry point
+ *	@str: unused
+ *	@ints: integer parameters from kernel setup code
+ *
+ *	Setup function invoked at boot to parse the ncr53c400a= command
+ *	line.
+ */
+
+static int __init do_NCR53C400A_setup(char *str)
+{
+	int ints[10];
+
+	get_options(str, ARRAY_SIZE(ints), ints);
+	internal_setup(BOARD_NCR53C400A, str, ints);
+	return 1;
+}
+
+/**
+ * 	do_DTC3181E_setup	-	set up entry point
+ *	@str: unused
+ *	@ints: integer parameters from kernel setup code
+ *
+ *	Setup function invoked at boot to parse the dtc3181e= command
+ *	line.
+ */
+
+static int __init do_DTC3181E_setup(char *str)
+{
+	int ints[10];
+
+	get_options(str, ARRAY_SIZE(ints), ints);
+	internal_setup(BOARD_DTC3181E, str, ints);
+	return 1;
+}
+
+#endif
+
+/**
+ * 	generic_NCR5380_detect	-	look for NCR5380 controllers
+ *	@tpnt: the scsi template
+ *
+ *	Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E
+ *	and DTC436(ISAPnP) controllers. If overrides have been set we use
+ *	them.
+ *
+ *	The caller supplied NCR5380_init function is invoked from here, before
+ *	the interrupt line is taken.
+ *
+ *	Locks: none
+ */
+
+static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
+{
+	static int current_override = 0;
+	int count;
+	unsigned int *ports;
+#ifndef SCSI_G_NCR5380_MEM
+	int i;
+	unsigned long region_size = 16;
+#endif
+	static unsigned int __initdata ncr_53c400a_ports[] = {
+		0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0
+	};
+	static unsigned int __initdata dtc_3181e_ports[] = {
+		0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0
+	};
+	int flags = 0;
+	struct Scsi_Host *instance;
+#ifdef SCSI_G_NCR5380_MEM
+	unsigned long base;
+	void __iomem *iomem;
+#endif
+
+	if (ncr_irq != NCR_NOT_SET)
+		overrides[0].irq = ncr_irq;
+	if (ncr_dma != NCR_NOT_SET)
+		overrides[0].dma = ncr_dma;
+	if (ncr_addr != NCR_NOT_SET)
+		overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr;
+	if (ncr_5380 != NCR_NOT_SET)
+		overrides[0].board = BOARD_NCR5380;
+	else if (ncr_53c400 != NCR_NOT_SET)
+		overrides[0].board = BOARD_NCR53C400;
+	else if (ncr_53c400a != NCR_NOT_SET)
+		overrides[0].board = BOARD_NCR53C400A;
+	else if (dtc_3181e != NCR_NOT_SET)
+		overrides[0].board = BOARD_DTC3181E;
+#ifndef SCSI_G_NCR5380_MEM
+	if (!current_override && isapnp_present()) {
+		struct pnp_dev *dev = NULL;
+		count = 0;
+		while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
+			if (count >= NO_OVERRIDES)
+				break;
+			if (pnp_device_attach(dev) < 0)
+				continue;
+			if (pnp_activate_dev(dev) < 0) {
+				printk(KERN_ERR "dtc436e probe: activate failed\n");
+				pnp_device_detach(dev);
+				continue;
+			}
+			if (!pnp_port_valid(dev, 0)) {
+				printk(KERN_ERR "dtc436e probe: no valid port\n");
+				pnp_device_detach(dev);
+				continue;
+			}
+			if (pnp_irq_valid(dev, 0))
+				overrides[count].irq = pnp_irq(dev, 0);
+			else
+				overrides[count].irq = NO_IRQ;
+			if (pnp_dma_valid(dev, 0))
+				overrides[count].dma = pnp_dma(dev, 0);
+			else
+				overrides[count].dma = DMA_NONE;
+			overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0);
+			overrides[count].board = BOARD_DTC3181E;
+			count++;
+		}
+	}
+#endif
+	tpnt->proc_name = "g_NCR5380";
+
+	for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
+		if (!(overrides[current_override].NCR5380_map_name))
+			continue;
+
+		ports = NULL;
+		switch (overrides[current_override].board) {
+		case BOARD_NCR5380:
+			flags = FLAG_NO_PSEUDO_DMA;
+			break;
+		case BOARD_NCR53C400:
+			flags = FLAG_NCR53C400;
+			break;
+		case BOARD_NCR53C400A:
+			flags = FLAG_NO_PSEUDO_DMA;
+			ports = ncr_53c400a_ports;
+			break;
+		case BOARD_DTC3181E:
+			flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E;
+			ports = dtc_3181e_ports;
+			break;
+		}
+
+#ifndef SCSI_G_NCR5380_MEM
+		if (ports) {
+			/* wakeup sequence for the NCR53C400A and DTC3181E */
+
+			/* Disable the adapter and look for a free io port */
+			outb(0x59, 0x779);
+			outb(0xb9, 0x379);
+			outb(0xc5, 0x379);
+			outb(0xae, 0x379);
+			outb(0xa6, 0x379);
+			outb(0x00, 0x379);
+
+			if (overrides[current_override].NCR5380_map_name != PORT_AUTO)
+				for (i = 0; ports[i]; i++) {
+					if (!request_region(ports[i],  16, "ncr53c80"))
+						continue;
+					if (overrides[current_override].NCR5380_map_name == ports[i])
+						break;
+					release_region(ports[i], 16);
+			} else
+				for (i = 0; ports[i]; i++) {
+					if (!request_region(ports[i],  16, "ncr53c80"))
+						continue;
+					if (inb(ports[i]) == 0xff)
+						break;
+					release_region(ports[i], 16);
+				}
+			if (ports[i]) {
+				/* At this point we have our region reserved */
+				outb(0x59, 0x779);
+				outb(0xb9, 0x379);
+				outb(0xc5, 0x379);
+				outb(0xae, 0x379);
+				outb(0xa6, 0x379);
+				outb(0x80 | i, 0x379);	/* set io port to be used */
+				outb(0xc0, ports[i] + 9);
+				if (inb(ports[i] + 9) != 0x80)
+					continue;
+				else
+					overrides[current_override].NCR5380_map_name = ports[i];
+			} else
+				continue;
+		}
+		else
+		{
+			/* Not a 53C400A style setup - just grab */
+			if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380")))
+				continue;
+			region_size = NCR5380_region_size;
+		}
+#else
+		base = overrides[current_override].NCR5380_map_name;
+		if (!request_mem_region(base, NCR5380_region_size, "ncr5380"))
+			continue;
+		iomem = ioremap(base, NCR5380_region_size);
+		if (!iomem) {
+			release_mem_region(base, NCR5380_region_size);
+			continue;
+		}
+#endif
+		instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
+		if (instance == NULL) {
+#ifndef SCSI_G_NCR5380_MEM
+			release_region(overrides[current_override].NCR5380_map_name, region_size);
+#else
+			iounmap(iomem);
+			release_mem_region(base, NCR5380_region_size);
+#endif
+			continue;
+		}
+
+		instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
+#ifndef SCSI_G_NCR5380_MEM
+		instance->n_io_port = region_size;
+#else
+		((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem;
+#endif
+
+		NCR5380_init(instance, flags);
+
+		if (overrides[current_override].irq != IRQ_AUTO)
+			instance->irq = overrides[current_override].irq;
+		else
+			instance->irq = NCR5380_probe_irq(instance, 0xffff);
+
+		/* Compatibility with documented NCR5380 kernel parameters */
+		if (instance->irq == 255)
+			instance->irq = NO_IRQ;
+
+		if (instance->irq != NO_IRQ)
+			if (request_irq(instance->irq, generic_NCR5380_intr,
+					0, "NCR5380", instance)) {
+				printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
+				instance->irq = NO_IRQ;
+			}
+
+		if (instance->irq == NO_IRQ) {
+			printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
+			printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
+		}
+
+		++current_override;
+		++count;
+	}
+	return count;
+}
+
+/**
+ *	generic_NCR5380_release_resources	-	free resources
+ *	@instance: host adapter to clean up 
+ *
+ *	Free the generic interface resources from this adapter.
+ *
+ *	Locks: none
+ */
+ 
+static int generic_NCR5380_release_resources(struct Scsi_Host *instance)
+{
+	NCR5380_local_declare();
+	NCR5380_setup(instance);
+	
+	if (instance->irq != NO_IRQ)
+		free_irq(instance->irq, instance);
+	NCR5380_exit(instance);
+
+#ifndef SCSI_G_NCR5380_MEM
+	release_region(instance->NCR5380_instance_name, instance->n_io_port);
+#else
+	iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem);
+	release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size);
+#endif
+
+
+	return 0;
+}
+
+#ifdef BIOSPARAM
+/**
+ *	generic_NCR5380_biosparam
+ *	@disk: disk to compute geometry for
+ *	@dev: device identifier for this disk
+ *	@ip: sizes to fill in
+ *
+ *	Generates a BIOS / DOS compatible H-C-S mapping for the specified 
+ *	device / size.
+ * 
+ * 	XXX Most SCSI boards use this mapping, I could be incorrect.  Someone
+ *	using hard disks on a trantor should verify that this mapping
+ *	corresponds to that used by the BIOS / ASPI driver by running the linux
+ *	fdisk program and matching the H_C_S coordinates to what DOS uses.
+ *
+ *	Locks: none
+ */
+
+static int
+generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev,
+			  sector_t capacity, int *ip)
+{
+	ip[0] = 64;
+	ip[1] = 32;
+	ip[2] = capacity >> 11;
+	return 0;
+}
+#endif
+
+#ifdef NCR53C400_PSEUDO_DMA
+
+/**
+ *	NCR5380_pread		-	pseudo DMA read
+ *	@instance: adapter to read from
+ *	@dst: buffer to read into
+ *	@len: buffer length
+ *
+ *	Perform a pseudo DMA mode read from an NCR53C400 or equivalent
+ *	controller
+ */
+ 
+static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
+{
+	int blocks = len / 128;
+	int start = 0;
+	int bl;
+
+	NCR5380_local_declare();
+	NCR5380_setup(instance);
+
+	NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
+	NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
+	while (1) {
+		if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
+			break;
+		}
+		if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
+			printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
+			return -1;
+		}
+		while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY);
+
+#ifndef SCSI_G_NCR5380_MEM
+		{
+			int i;
+			for (i = 0; i < 128; i++)
+				dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
+		}
+#else
+		/* implies SCSI_G_NCR5380_MEM */
+		memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
+#endif
+		start += 128;
+		blocks--;
+	}
+
+	if (blocks) {
+		while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
+		{
+			// FIXME - no timeout
+		}
+
+#ifndef SCSI_G_NCR5380_MEM
+		{
+			int i;	
+			for (i = 0; i < 128; i++)
+				dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
+		}
+#else
+		/* implies SCSI_G_NCR5380_MEM */
+		memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
+#endif
+		start += 128;
+		blocks--;
+	}
+
+	if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
+		printk("53C400r: no 53C80 gated irq after transfer");
+
+#if 0
+	/*
+	 *	DON'T DO THIS - THEY NEVER ARRIVE!
+	 */
+	printk("53C400r: Waiting for 53C80 registers\n");
+	while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
+		;
+#endif
+	if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
+		printk(KERN_ERR "53C400r: no end dma signal\n");
+		
+	NCR5380_write(MODE_REG, MR_BASE);
+	NCR5380_read(RESET_PARITY_INTERRUPT_REG);
+	return 0;
+}
+
+/**
+ *	NCR5380_write		-	pseudo DMA write
+ *	@instance: adapter to read from
+ *	@dst: buffer to read into
+ *	@len: buffer length
+ *
+ *	Perform a pseudo DMA mode read from an NCR53C400 or equivalent
+ *	controller
+ */
+
+static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
+{
+	int blocks = len / 128;
+	int start = 0;
+	int bl;
+	int i;
+
+	NCR5380_local_declare();
+	NCR5380_setup(instance);
+
+	NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
+	NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
+	while (1) {
+		if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
+			printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
+			return -1;
+		}
+
+		if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
+			break;
+		}
+		while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
+			; // FIXME - timeout
+#ifndef SCSI_G_NCR5380_MEM
+		{
+			for (i = 0; i < 128; i++)
+				NCR5380_write(C400_HOST_BUFFER, src[start + i]);
+		}
+#else
+		/* implies SCSI_G_NCR5380_MEM */
+		memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
+#endif
+		start += 128;
+		blocks--;
+	}
+	if (blocks) {
+		while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
+			; // FIXME - no timeout
+
+#ifndef SCSI_G_NCR5380_MEM
+		{
+			for (i = 0; i < 128; i++)
+				NCR5380_write(C400_HOST_BUFFER, src[start + i]);
+		}
+#else
+		/* implies SCSI_G_NCR5380_MEM */
+		memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
+#endif
+		start += 128;
+		blocks--;
+	}
+
+#if 0
+	printk("53C400w: waiting for registers to be available\n");
+	THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG);
+	printk("53C400w: Got em\n");
+#endif
+
+	/* Let's wait for this instead - could be ugly */
+	/* All documentation says to check for this. Maybe my hardware is too
+	 * fast. Waiting for it seems to work fine! KLL
+	 */
+	while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
+		;	// FIXME - no timeout
+
+	/*
+	 * I know. i is certainly != 0 here but the loop is new. See previous
+	 * comment.
+	 */
+	if (i) {
+		if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
+			printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i);
+	} else
+		printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n");
+
+#if 0
+	if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
+		printk(KERN_ERR "53C400w: no end dma signal\n");
+	}
+#endif
+	while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
+		; 	// TIMEOUT
+	return 0;
+}
+#endif				/* PSEUDO_DMA */
+
+/*
+ *	Include the NCR5380 core code that we build our driver around	
+ */
+ 
+#include "NCR5380.c"
+
+static struct scsi_host_template driver_template = {
+	.show_info      	= generic_NCR5380_show_info,
+	.name           	= "Generic NCR5380/NCR53C400 SCSI",
+	.detect         	= generic_NCR5380_detect,
+	.release        	= generic_NCR5380_release_resources,
+	.info           	= generic_NCR5380_info,
+	.queuecommand   	= generic_NCR5380_queue_command,
+	.eh_abort_handler	= generic_NCR5380_abort,
+	.eh_bus_reset_handler	= generic_NCR5380_bus_reset,
+	.bios_param     	= NCR5380_BIOSPARAM,
+	.can_queue      	= CAN_QUEUE,
+        .this_id        	= 7,
+        .sg_tablesize   	= SG_ALL,
+	.cmd_per_lun    	= CMD_PER_LUN,
+        .use_clustering		= DISABLE_CLUSTERING,
+};
+#include <linux/module.h>
+#include "scsi_module.c"
+
+module_param(ncr_irq, int, 0);
+module_param(ncr_dma, int, 0);
+module_param(ncr_addr, int, 0);
+module_param(ncr_5380, int, 0);
+module_param(ncr_53c400, int, 0);
+module_param(ncr_53c400a, int, 0);
+module_param(dtc_3181e, int, 0);
+MODULE_LICENSE("GPL");
+
+#if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE)
+static struct isapnp_device_id id_table[] = {
+	{
+	 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+	 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
+	 0},
+	{0}
+};
+
+MODULE_DEVICE_TABLE(isapnp, id_table);
+#endif
+
+__setup("ncr5380=", do_NCR5380_setup);
+__setup("ncr53c400=", do_NCR53C400_setup);
+__setup("ncr53c400a=", do_NCR53C400A_setup);
+__setup("dtc3181e=", do_DTC3181E_setup);