Initial import of modified Linux 2.6.28 tree

Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y

1 files changed, 956 insertions, 0 deletions

diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
new file mode 100644
index 0000000..75585a5
--- /dev/null
+++ b/drivers/scsi/g_NCR5380.c
@@ -0,0 +1,956 @@
+/*
+ * 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
+ *
+ * ALPHA RELEASE 1. 
+ *
+ * For more information, please consult 
+ *
+ * NCR 5380 Family
+ * SCSI Protocol Controller
+ * Databook
+ *
+ * NCR Microelectronics
+ * 1635 Aeroplaza Drive
+ * Colorado Springs, CO 80916
+ * 1+ (719) 578-3400
+ * 1+ (800) 334-5454
+ */
+
+/* 
+ * TODO : flesh out DMA support, find some one actually using this (I have
+ * 	a memory mapped Trantor board that works fine)
+ */
+
+/*
+ * Options :
+ *
+ * PARITY - enable parity checking.  Not supported.
+ *
+ * SCSI2 - enable support for SCSI-II tagged queueing.  Untested.
+ *
+ * USLEEP - enable support for devices that don't disconnect.  Untested.
+ *
+ * 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.
+ *     
+ */
+
+/*
+ * $Log: generic_NCR5380.c,v $
+ */
+
+/* settings for DTC3181E card with only Mustek scanner attached */
+#define USLEEP
+#define USLEEP_POLL	1
+#define USLEEP_SLEEP	20
+#define USLEEP_WAITLONG	500
+
+#define AUTOPROBE_IRQ
+#define AUTOSENSE
+
+
+#ifdef CONFIG_SCSI_GENERIC_NCR53C400
+#define NCR53C400_PSEUDO_DMA 1
+#define PSEUDO_DMA
+#define NCR53C400
+#define NCR5380_STATS
+#undef NCR5380_STAT_LIMIT
+#endif
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <linux/signal.h>
+#include <linux/blkdev.h>
+#include "scsi.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
+ */
+
+int __init generic_NCR5380_detect(struct scsi_host_template * tpnt)
+{
+	static int current_override = 0;
+	int count, i;
+	unsigned int *ports;
+	unsigned long region_size = 16;
+	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 CONFIG_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;
+
+	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) {
+				printk(KERN_ERR "dtc436e probe: attach failed\n");
+				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 = SCSI_IRQ_NONE;
+			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++;
+		}
+	}
+
+	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 CONFIG_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 CONFIG_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 CONFIG_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);
+
+		if (instance->irq != SCSI_IRQ_NONE)
+			if (request_irq(instance->irq, generic_NCR5380_intr,
+					IRQF_DISABLED, "NCR5380", instance)) {
+				printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
+				instance->irq = SCSI_IRQ_NONE;
+			}
+
+		if (instance->irq == SCSI_IRQ_NONE) {
+			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);
+		}
+
+		printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name);
+		if (instance->irq == SCSI_IRQ_NONE)
+			printk(" interrupts disabled");
+		else
+			printk(" irq %d", instance->irq);
+		printk(" options CAN_QUEUE=%d  CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE);
+		NCR5380_print_options(instance);
+		printk("\n");
+
+		++current_override;
+		++count;
+	}
+	return count;
+}
+
+/**
+ *	generic_NCR5380_info	-	reporting string
+ *	@host: NCR5380 to report on
+ *
+ *	Report driver information for the NCR5380
+ */
+ 	
+const char *generic_NCR5380_info(struct Scsi_Host *host)
+{
+	static const char string[] = "Generic NCR5380/53C400 Driver";
+	return string;
+}
+
+/**
+ *	generic_NCR5380_release_resources	-	free resources
+ *	@instance: host adapter to clean up 
+ *
+ *	Free the generic interface resources from this adapter.
+ *
+ *	Locks: none
+ */
+ 
+int generic_NCR5380_release_resources(struct Scsi_Host *instance)
+{
+	NCR5380_local_declare();
+	NCR5380_setup(instance);
+	
+	if (instance->irq != SCSI_IRQ_NONE)
+		free_irq(instance->irq, instance);
+	NCR5380_exit(instance);
+
+#ifndef CONFIG_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 psuedo 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 CONFIG_SCSI_G_NCR5380_MEM
+		{
+			int i;
+			for (i = 0; i < 128; i++)
+				dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
+		}
+#else
+		/* implies CONFIG_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 CONFIG_SCSI_G_NCR5380_MEM
+		{
+			int i;	
+			for (i = 0; i < 128; i++)
+				dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
+		}
+#else
+		/* implies CONFIG_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 psuedo 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 CONFIG_SCSI_G_NCR5380_MEM
+		{
+			for (i = 0; i < 128; i++)
+				NCR5380_write(C400_HOST_BUFFER, src[start + i]);
+		}
+#else
+		/* implies CONFIG_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 CONFIG_SCSI_G_NCR5380_MEM
+		{
+			for (i = 0; i < 128; i++)
+				NCR5380_write(C400_HOST_BUFFER, src[start + i]);
+		}
+#else
+		/* implies CONFIG_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"
+
+#define PRINTP(x) len += sprintf(buffer+len, x)
+#define ANDP ,
+
+static int sprint_opcode(char *buffer, int len, int opcode)
+{
+	int start = len;
+	PRINTP("0x%02x " ANDP opcode);
+	return len - start;
+}
+
+static int sprint_command(char *buffer, int len, unsigned char *command)
+{
+	int i, s, start = len;
+	len += sprint_opcode(buffer, len, command[0]);
+	for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
+		PRINTP("%02x " ANDP command[i]);
+	PRINTP("\n");
+	return len - start;
+}
+
+/**
+ *	sprintf_Scsi_Cmnd	-	print a scsi command
+ *	@buffer: buffr to print into
+ *	@len: buffer length
+ *	@cmd: SCSI command block
+ *	
+ *	Print out the target and command data in hex
+ */
+
+static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd)
+{
+	int start = len;
+	PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun);
+	PRINTP("        command = ");
+	len += sprint_command(buffer, len, cmd->cmnd);
+	return len - start;
+}
+
+/**
+ *	generic_NCR5380_proc_info	-	/proc for NCR5380 driver
+ *	@buffer: buffer to print into
+ *	@start: start position
+ *	@offset: offset into buffer
+ *	@len: length
+ *	@hostno: instance to affect
+ *	@inout: read/write
+ *
+ *	Provide the procfs information for the 5380 controller. We fill
+ *	this with useful debugging information including the commands
+ *	being executed, disconnected command queue and the statistical
+ *	data
+ *
+ *	Locks: global cli/lock for queue walk
+ */
+ 
+static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout)
+{
+	int len = 0;
+	NCR5380_local_declare();
+	unsigned long flags;
+	unsigned char status;
+	int i;
+	Scsi_Cmnd *ptr;
+	struct NCR5380_hostdata *hostdata;
+#ifdef NCR5380_STATS
+	struct scsi_device *dev;
+#endif
+
+	NCR5380_setup(scsi_ptr);
+	hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata;
+
+	spin_lock_irqsave(scsi_ptr->host_lock, flags);
+	PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name);
+	PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE);
+	PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE);
+#ifdef NCR53C400
+	PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE);
+	PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not");
+# if NCR53C400_PSEUDO_DMA
+	PRINTP("NCR53C400 pseudo DMA used\n");
+# endif
+#else
+	PRINTP("NO NCR53C400 driver extensions\n");
+#endif
+	PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name);
+	if (scsi_ptr->irq == SCSI_IRQ_NONE)
+		PRINTP("no interrupt\n");
+	else
+		PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);
+
+#ifdef NCR5380_STATS
+	if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)
+		PRINTP("There are commands pending, transfer rates may be crud\n");
+	if (hostdata->pendingr)
+		PRINTP("  %d pending reads" ANDP hostdata->pendingr);
+	if (hostdata->pendingw)
+		PRINTP("  %d pending writes" ANDP hostdata->pendingw);
+	if (hostdata->pendingr || hostdata->pendingw)
+		PRINTP("\n");
+	shost_for_each_device(dev, scsi_ptr) {
+		unsigned long br = hostdata->bytes_read[dev->id];
+		unsigned long bw = hostdata->bytes_write[dev->id];
+		long tr = hostdata->time_read[dev->id] / HZ;
+		long tw = hostdata->time_write[dev->id] / HZ;
+
+		PRINTP("  T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type));
+		for (i = 0; i < 8; i++)
+			if (dev->vendor[i] >= 0x20)
+				*(buffer + (len++)) = dev->vendor[i];
+		*(buffer + (len++)) = ' ';
+		for (i = 0; i < 16; i++)
+			if (dev->model[i] >= 0x20)
+				*(buffer + (len++)) = dev->model[i];
+		*(buffer + (len++)) = ' ';
+		for (i = 0; i < 4; i++)
+			if (dev->rev[i] >= 0x20)
+				*(buffer + (len++)) = dev->rev[i];
+		*(buffer + (len++)) = ' ';
+
+		PRINTP("\n%10ld kb read    in %5ld secs" ANDP br / 1024 ANDP tr);
+		if (tr)
+			PRINTP(" @ %5ld bps" ANDP br / tr);
+
+		PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw);
+		if (tw)
+			PRINTP(" @ %5ld bps" ANDP bw / tw);
+		PRINTP("\n");
+	}
+#endif
+
+	status = NCR5380_read(STATUS_REG);
+	if (!(status & SR_REQ))
+		PRINTP("REQ not asserted, phase unknown.\n");
+	else {
+		for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i);
+		PRINTP("Phase %s\n" ANDP phases[i].name);
+	}
+
+	if (!hostdata->connected) {
+		PRINTP("No currently connected command\n");
+	} else {
+		len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected);
+	}
+
+	PRINTP("issue_queue\n");
+
+	for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
+		len += sprint_Scsi_Cmnd(buffer, len, ptr);
+
+	PRINTP("disconnected_queue\n");
+
+	for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
+		len += sprint_Scsi_Cmnd(buffer, len, ptr);
+
+	*start = buffer + offset;
+	len -= offset;
+	if (len > length)
+		len = length;
+	spin_unlock_irqrestore(scsi_ptr->host_lock, flags);
+	return len;
+}
+
+#undef PRINTP
+#undef ANDP
+
+static struct scsi_host_template driver_template = {
+	.proc_info      	= generic_NCR5380_proc_info,
+	.name           	= "Generic NCR5380/NCR53C400 Scsi Driver",
+	.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");
+
+
+static struct isapnp_device_id id_table[] __devinitdata = {
+	{
+	 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+	 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
+	 0},
+	{0}
+};
+
+MODULE_DEVICE_TABLE(isapnp, id_table);
+
+
+__setup("ncr5380=", do_NCR5380_setup);
+__setup("ncr53c400=", do_NCR53C400_setup);
+__setup("ncr53c400a=", do_NCR53C400A_setup);
+__setup("dtc3181e=", do_DTC3181E_setup);