patch-2.4.20 linux-2.4.20/drivers/usb/serial/io_ti.c

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diff -urN linux-2.4.19/drivers/usb/serial/io_ti.c linux-2.4.20/drivers/usb/serial/io_ti.c
@@ -0,0 +1,2684 @@
+/*
+ * Edgeport USB Serial Converter driver
+ *
+ * Copyright(c) 2000-2002 Inside Out Networks, All rights reserved.
+ * Copyright(c) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
+ *
+ *	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 of the License, or
+ *	(at your option) any later version.
+ *
+ * Supports the following devices:
+ *	EP/1 EP/2 EP/4
+ *
+ * Version history:
+ *
+ *	July 11, 2002 	Removed 4 port device structure since all TI UMP 
+ *			chips have only 2 ports 
+ *			David Iacovelli (davidi@ionetworks.com)
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/serial.h>
+#include <linux/ioctl.h>
+#include <asm/uaccess.h>
+#include <linux/usb.h>
+
+#ifdef CONFIG_USB_SERIAL_DEBUG
+	static int debug = 1;
+#else
+	static int debug;
+#endif
+
+#include "usb-serial.h"
+
+#include "io_16654.h"
+#include "io_usbvend.h"
+#include "io_ti.h"
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v0.2"
+#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
+#define DRIVER_DESC "Edgeport USB Serial Driver"
+
+
+/* firmware image code */
+#define IMAGE_VERSION_NAME	PagableOperationalCodeImageVersion
+#define IMAGE_ARRAY_NAME	PagableOperationalCodeImage
+#define IMAGE_SIZE		PagableOperationalCodeSize
+#include "io_fw_down3.h"	/* Define array OperationalCodeImage[] */
+
+#define EPROM_PAGE_SIZE		64
+
+
+struct edgeport_uart_buf_desc {
+	__u32 count;		// Number of bytes currently in buffer
+};
+
+/* different hardware types */
+#define HARDWARE_TYPE_930	0
+#define HARDWARE_TYPE_TIUMP	1
+
+// IOCTL_PRIVATE_TI_GET_MODE Definitions
+#define	TI_MODE_CONFIGURING	0   // Device has not entered start device 
+#define	TI_MODE_BOOT		1   // Staying in boot mode
+#define TI_MODE_DOWNLOAD	2   // Made it to download mode
+#define TI_MODE_TRANSITIONING	3   // Currently in boot mode but transitioning to download mode
+
+
+/* Product information read from the Edgeport */
+struct product_info
+{
+	int	TiMode;			// Current TI Mode
+	__u8	hardware_type;		// Type of hardware
+} __attribute__((packed));
+
+
+struct edgeport_port {
+	__u16 uart_base;
+	__u16 dma_address;
+	__u8 shadow_msr;
+	__u8 shadow_mcr;
+	__u8 shadow_lsr;
+	__u8 lsr_mask;
+	__u32 ump_read_timeout;		/* Number of miliseconds the UMP will
+					   wait without data before completing
+					   a read short */
+	int baud_rate;
+	int close_pending;
+	int lsr_event;
+	struct edgeport_uart_buf_desc tx;
+	struct async_icount	icount;
+	wait_queue_head_t	delta_msr_wait;	/* for handling sleeping while
+						   waiting for msr change to
+						   happen */
+	struct edgeport_serial	*edge_serial;
+	struct usb_serial_port	*port;
+};
+
+struct edgeport_serial {
+	struct product_info product_info;
+	u8 TI_I2C_Type;			// Type of I2C in UMP
+	u8 TiReadI2C;			// Set to TRUE if we have read the I2c in Boot Mode
+	int num_ports_open;
+	struct usb_serial *serial;
+};
+
+
+/* Devices that this driver supports */
+static struct usb_device_id edgeport_1port_id_table [] = {
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
+	{ }
+};
+
+static struct usb_device_id edgeport_2port_id_table [] = {
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_BOOT) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_DOWN) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_BOOT) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_DOWN) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22) },
+	{ }
+};
+
+/* Devices that this driver supports */
+static __devinitdata struct usb_device_id id_table_combined [] = {
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_BOOT) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_DOWN) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_BOOT) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_DOWN) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
+	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22) },
+	{ }
+};
+
+MODULE_DEVICE_TABLE (usb, id_table_combined);
+
+
+static struct EDGE_FIRMWARE_VERSION_INFO OperationalCodeImageVersion;
+
+static int TIStayInBootMode = 0;
+static int ignore_cpu_rev = 0;
+
+
+
+static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios);
+
+static int TIReadVendorRequestSync (struct usb_device *dev,
+				__u8		request,
+				__u16		value,
+				__u16		index,
+				u8 		*data,
+				int		size)
+{
+	int status;
+
+	status = usb_control_msg (dev,
+				usb_rcvctrlpipe(dev, 0),
+				request,
+				(USB_TYPE_VENDOR | 
+				 USB_RECIP_DEVICE | 
+				 USB_DIR_IN),
+				value,
+				index,
+				data,
+				size,
+				HZ);
+	if (status < 0)
+		return status;
+	if (status != size) {
+		dbg ("%s - wanted to write %d, but only wrote %d",
+		     __FUNCTION__, size, status);
+		return -ECOMM;
+	}
+	return 0;
+}
+
+static int TISendVendorRequestSync (struct usb_device *dev,
+				__u8		request,
+				__u16		value,
+				__u16		index,
+				u8 		*data,
+				int		size)
+{
+	int status;
+
+	status = usb_control_msg (dev,
+				usb_sndctrlpipe(dev, 0),
+				request,
+				(USB_TYPE_VENDOR | 
+				 USB_RECIP_DEVICE | 
+				 USB_DIR_OUT),
+				value,
+				index,
+				data,
+				size,
+				HZ);
+
+	if (status < 0)
+		return status;
+	if (status != size) {
+		dbg ("%s - wanted to write %d, but only wrote %d",
+		     __FUNCTION__, size, status);
+		return -ECOMM;
+	}
+	return 0;
+}
+
+static int TIWriteCommandSync (struct usb_device *dev, __u8 command,
+				__u8 moduleid, __u16 value, u8 *data,
+				int size)
+{
+	return TISendVendorRequestSync (dev,
+					  command,	  		// Request
+					  value,			// wValue 
+					  moduleid,			// wIndex
+					  data,				// TransferBuffer
+					  size);			// TransferBufferLength
+
+}
+
+
+/* clear tx/rx buffers and fifo in TI UMP */
+static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask)
+{
+	int port_number = port->number - port->serial->minor;
+
+	dbg ("%s - port %d, mask %x", __FUNCTION__, port_number, mask);
+
+	return TIWriteCommandSync (port->serial->dev,
+					UMPC_PURGE_PORT,
+					(__u8)(UMPM_UART1_PORT + port_number),
+					mask,
+					NULL,
+					0);
+}
+
+/**
+ * TIReadDownloadMemory - Read edgeport memory from TI chip
+ * @dev: usb device pointer
+ * @address: Device CPU address at which to read
+ * @length: Length of above data
+ * @address_type: Can read both XDATA and I2C
+ * @buffer: pointer to input data buffer
+ */
+int TIReadDownloadMemory (struct usb_device *dev, int start_address, int length,
+			  __u8 address_type, __u8 *buffer)
+{
+	int status = 0;
+	__u8 read_length;
+	__u16 be_start_address;
+	
+	dbg ("%s - @ %x for %d", __FUNCTION__, start_address, length);
+
+	/* Read in blocks of 64 bytes
+	 * (TI firmware can't handle more than 64 byte reads)
+	 */
+	while (length) {
+		if (length > 64)
+			read_length= 64;
+		else
+			read_length = (__u8)length;
+
+		if (read_length > 1) {
+			dbg ("%s - @ %x for %d", __FUNCTION__, 
+			     start_address, read_length);
+		}
+		be_start_address = cpu_to_be16 (start_address);
+		status = TIReadVendorRequestSync (dev,
+						  UMPC_MEMORY_READ,	// Request
+						  (__u16)address_type,	// wValue (Address type)
+						  be_start_address,	// wIndex (Address to read)
+						  buffer,		// TransferBuffer
+						  read_length);	// TransferBufferLength
+
+		if (status) {
+			dbg ("%s - ERROR %x", __FUNCTION__, status);
+			return status;
+		}
+
+		if (read_length > 1) {
+			usb_serial_debug_data (__FILE__, __FUNCTION__,
+					       read_length, buffer);
+		}
+
+		/* Update pointers/length */
+		start_address += read_length;
+		buffer += read_length;
+		length -= read_length;
+	}
+	
+	return status;
+}
+
+int TIReadRam (struct usb_device *dev, int start_address, int length, __u8 *buffer)
+{
+	return TIReadDownloadMemory (dev,
+				     start_address,
+				     length,
+				     DTK_ADDR_SPACE_XDATA,
+				     buffer);
+}
+
+/* Read edgeport memory to a given block */
+static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 * buffer)
+{
+	int status = 0;
+	int i;
+
+	for (i=0; i< length; i++) {
+		status = TIReadVendorRequestSync (serial->serial->dev,
+					UMPC_MEMORY_READ,		// Request
+					serial->TI_I2C_Type,		// wValue (Address type)
+					(__u16)(start_address+i),	// wIndex
+					&buffer[i],			// TransferBuffer
+					0x01);				// TransferBufferLength
+		if (status) {
+			dbg ("%s - ERROR %x", __FUNCTION__, status);
+			return status;
+		}
+	}
+
+	dbg ("%s - start_address = %x, length = %d", __FUNCTION__, start_address, length);
+	usb_serial_debug_data (__FILE__, __FUNCTION__, length, buffer);
+
+	serial->TiReadI2C = 1;
+
+	return status;
+}
+
+/* Write given block to TI EPROM memory */
+static int TIWriteBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
+{
+	int status = 0;
+	int i;
+	__u8 temp;
+
+	/* Must do a read before write */
+	if (!serial->TiReadI2C) {
+		status = TIReadBootMemory(serial, 0, 1, &temp);
+		if (status)
+			return status;
+	}
+
+	for (i=0; i < length; ++i) {
+		status = TISendVendorRequestSync (serial->serial->dev,
+						UMPC_MEMORY_WRITE,		// Request
+						buffer[i],			// wValue
+						(__u16)(i+start_address),	// wIndex
+						NULL,				// TransferBuffer
+						0);				// TransferBufferLength
+		if (status)
+			return status;
+	}
+
+  	dbg ("%s - start_sddr = %x, length = %d", __FUNCTION__, start_address, length);
+	usb_serial_debug_data (__FILE__, __FUNCTION__, length, buffer);
+
+	return status;
+}
+
+
+/* Write edgeport I2C memory to TI chip	*/
+static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address, int length, __u8 address_type, __u8 *buffer)
+{
+	int status = 0;
+	int write_length;
+	__u16 be_start_address;
+
+	/* We can only send a maximum of 1 aligned byte page at a time */
+	
+	/* calulate the number of bytes left in the first page */
+	write_length = EPROM_PAGE_SIZE - (start_address & (EPROM_PAGE_SIZE - 1));
+
+	if (write_length > length)
+		write_length = length;
+
+	dbg ("%s - BytesInFirstPage Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
+	usb_serial_debug_data (__FILE__, __FUNCTION__, write_length, buffer);
+
+	/* Write first page */
+	be_start_address = cpu_to_be16 (start_address);
+	status = TISendVendorRequestSync (serial->serial->dev,
+					UMPC_MEMORY_WRITE,	// Request
+					(__u16)address_type,	// wValue
+					be_start_address,	// wIndex
+					buffer,			// TransferBuffer
+					write_length);
+	if (status) {
+		dbg ("%s - ERROR %d", __FUNCTION__, status);
+		return status;
+	}
+
+	length		-= write_length;
+	start_address	+= write_length;
+	buffer		+= write_length;
+
+	/* We should be aligned now -- can write max page size bytes at a time */
+	while (length) {
+		if (length > EPROM_PAGE_SIZE)
+			write_length = EPROM_PAGE_SIZE;
+		else
+			write_length = length;
+
+		dbg ("%s - Page Write Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
+		usb_serial_debug_data (__FILE__, __FUNCTION__, write_length, buffer);
+
+		/* Write next page */
+		be_start_address = cpu_to_be16 (start_address);
+		status = TISendVendorRequestSync (serial->serial->dev,
+						UMPC_MEMORY_WRITE,	// Request
+						(__u16)address_type,	// wValue
+						be_start_address,	// wIndex
+						buffer,	  		// TransferBuffer
+						write_length);		// TransferBufferLength
+		if (status) {
+			dbg ("%s - ERROR %d", __FUNCTION__, status);
+			return status;
+		}
+		
+		length		-= write_length;
+		start_address	+= write_length;
+		buffer		+= write_length;
+	}
+	return status;
+}
+
+/* Examine the UMP DMA registers and LSR
+ * 
+ * Check the MSBit of the X and Y DMA byte count registers.
+ * A zero in this bit indicates that the TX DMA buffers are empty
+ * then check the TX Empty bit in the UART.
+ */
+static int TIIsTxActive (struct edgeport_port *port)
+{
+	int status;
+	struct out_endpoint_desc_block *oedb;
+	__u8 lsr;
+	int bytes_left = 0;
+
+	oedb = kmalloc (sizeof (* oedb), GFP_KERNEL);
+	if (!oedb) {
+		err ("%s - out of memory", __FUNCTION__);
+		return -ENOMEM;
+	}
+
+	/* Read the DMA Count Registers */
+	status = TIReadRam (port->port->serial->dev,
+			    port->dma_address,
+			    sizeof( *oedb),
+			    (void *)oedb);
+
+	if (status)
+		goto exit_is_tx_active;
+
+	dbg ("%s - XByteCount    0x%X", __FUNCTION__, oedb->XByteCount);
+
+	/* and the LSR */
+	status = TIReadRam (port->port->serial->dev, 
+			    port->uart_base + UMPMEM_OFFS_UART_LSR,
+			    1,
+			    &lsr);
+
+	if (status)
+		goto exit_is_tx_active;
+	dbg ("%s - LSR = 0x%X", __FUNCTION__, lsr);
+	
+	/* If either buffer has data or we are transmitting then return TRUE */
+	if ((oedb->XByteCount & 0x80 ) != 0 )
+		bytes_left += 64;
+
+	if ((lsr & UMP_UART_LSR_TX_MASK ) == 0 )
+		bytes_left += 1;
+
+	/* We return Not Active if we get any kind of error */
+exit_is_tx_active:
+	dbg ("%s - return %d", __FUNCTION__, bytes_left );
+	return bytes_left;
+}
+
+static void TIChasePort(struct edgeport_port *port)
+{
+	int loops;
+	int last_count;
+	int write_size;
+
+restart_tx_loop:
+	// Base the LoopTime on the baud rate
+	if (port->baud_rate == 0)
+		port->baud_rate = 1200;
+
+	write_size = port->tx.count;
+	loops = max(100, (100*write_size)/(port->baud_rate/10));
+	dbg ("%s - write_size %d, baud %d loop = %d", __FUNCTION__,
+	     write_size, port->baud_rate, loops);
+
+	while (1) {
+		// Save Last count
+		last_count = port->tx.count;
+
+		dbg ("%s - Tx Buffer Size = %d loops = %d", __FUNCTION__,
+		     last_count, loops);
+
+		/* Is the Edgeport Buffer empty? */
+		if (port->tx.count == 0)
+			break;
+
+		/* Block the thread for 10ms */
+		wait_ms (10);
+
+		if (last_count == port->tx.count) {
+			/* No activity.. count down. */
+			--loops;
+			if (loops == 0) {
+				dbg ("%s - Wait for TxEmpty - TIMEOUT",
+				     __FUNCTION__);
+				return;
+			}
+		} else {
+			/* Reset timeout value back to a minimum of 1 second */
+			dbg ("%s - Wait for TxEmpty  Reset Count", __FUNCTION__);
+			goto restart_tx_loop;
+		}
+	}
+
+	dbg ("%s - Local Tx Buffer Empty -- Waiting for TI UMP to EMPTY X/Y and FIFO",
+	     __FUNCTION__);
+
+	write_size = TIIsTxActive (port);
+	loops = max(50, (100*write_size)/(port->baud_rate/10));
+	dbg ("%s - write_size %d, baud %d loop = %d", __FUNCTION__, 
+	     write_size, port->baud_rate, loops);
+
+	while (1) {
+		/* This function takes 4 ms; */
+		if (!TIIsTxActive (port)) {
+			/* Delay a few char times */
+			wait_ms (50);
+			dbg ("%s - Empty", __FUNCTION__);
+			return;
+		}
+
+		--loops;
+		if (loops == 0) {
+			dbg ("%s - TIMEOUT", __FUNCTION__);
+			return;
+		}
+	}
+}
+
+static int TIChooseConfiguration (struct usb_device *dev)
+{
+	// There may be multiple configurations on this device, in which case
+	// we would need to read and parse all of them to find out which one
+	// we want. However, we just support one config at this point,
+	// configuration # 1, which is Config Descriptor 0.
+
+	dbg ("%s - Number of Interfaces = %d", __FUNCTION__, dev->config->bNumInterfaces);
+	dbg ("%s - MAX Power            = %d", __FUNCTION__, dev->config->MaxPower*2);
+
+	if (dev->config->bNumInterfaces != 1) {
+		err ("%s - bNumInterfaces is not 1, ERROR!", __FUNCTION__);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+int TIReadRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
+{
+	int status;
+
+	if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
+		status = TIReadDownloadMemory (serial->serial->dev,
+					       start_address,
+					       length,
+					       serial->TI_I2C_Type,
+					       buffer);
+	} else {
+		status = TIReadBootMemory (serial,
+					   start_address,
+					   length,
+					   buffer);
+	}
+
+	return status;
+}
+
+int TIWriteRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
+{
+	if (serial->product_info.TiMode == TI_MODE_BOOT)
+		return TIWriteBootMemory (serial,
+					  start_address,
+					  length,
+					  buffer);
+
+	if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
+		return TIWriteDownloadI2C (serial,
+					   start_address,
+					   length,
+					   serial->TI_I2C_Type,
+					   buffer);
+
+	return -EINVAL;
+}
+
+
+
+/* Read a descriptor header from I2C based on type */
+static int TIGetDescriptorAddress (struct edgeport_serial *serial, int desc_type, struct ti_i2c_desc *rom_desc)
+{
+	int start_address;
+	int status;
+
+	/* Search for requested descriptor in I2C */
+	start_address = 2;
+	do {
+		status = TIReadRom (serial,
+				   start_address,
+				   sizeof(struct ti_i2c_desc),
+				   (__u8 *)rom_desc );
+		if (status)
+			return 0;
+
+		if (rom_desc->Type == desc_type)
+			return start_address;
+
+		start_address = start_address + sizeof(struct ti_i2c_desc) +  rom_desc->Size;
+
+	} while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
+	
+	return 0;
+}
+
+/* Validate descriptor checksum */
+static int ValidChecksum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
+{
+	__u16 i;
+	__u8 cs = 0;
+
+	for (i=0; i < rom_desc->Size; i++) {
+		cs = (__u8)(cs + buffer[i]);
+	}
+	if (cs != rom_desc->CheckSum) {
+		dbg ("%s - Mismatch %x - %x", __FUNCTION__, rom_desc->CheckSum, cs);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/* Make sure that the I2C image is good */
+static int TiValidateI2cImage (struct edgeport_serial *serial)
+{
+	int status = 0;
+	struct ti_i2c_desc *rom_desc;
+	int start_address = 2;
+	__u8 *buffer;
+
+	rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
+	if (!rom_desc) {
+		err ("%s - out of memory", __FUNCTION__);
+		return -ENOMEM;
+	}
+	buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL);
+	if (!buffer) {
+		err ("%s - out of memory when allocating buffer", __FUNCTION__);
+		kfree (rom_desc);
+		return -ENOMEM;
+	}
+
+	// Read the first byte (Signature0) must be 0x52
+	status = TIReadRom (serial, 0, 1, buffer);
+	if (status)
+		goto ExitTiValidateI2cImage; 
+
+	if (*buffer != 0x52) {
+		err ("%s - invalid buffer signature", __FUNCTION__);
+		status = -ENODEV;
+		goto ExitTiValidateI2cImage;
+	}
+
+	do {
+		// Validate the I2C
+		status = TIReadRom (serial,
+				start_address,
+				sizeof(struct ti_i2c_desc),
+				(__u8 *)rom_desc);
+		if (status)
+			break;
+
+		if ((start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size) > TI_MAX_I2C_SIZE) {
+			status = -ENODEV;
+			dbg ("%s - structure too big, erroring out.", __FUNCTION__);
+			break;
+		}
+
+		dbg ("%s Type = 0x%x", __FUNCTION__, rom_desc->Type);
+
+		// Skip type 2 record
+		if ((rom_desc->Type & 0x0f) != I2C_DESC_TYPE_FIRMWARE_BASIC) {
+			// Read the descriptor data
+			status = TIReadRom(serial,
+						start_address+sizeof(struct ti_i2c_desc),
+						rom_desc->Size,
+						buffer);
+			if (status)
+				break;
+
+			status = ValidChecksum(rom_desc, buffer);
+			if (status)
+				break;
+		}
+		start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size;
+
+	} while ((rom_desc->Type != I2C_DESC_TYPE_ION) && (start_address < TI_MAX_I2C_SIZE));
+
+	if ((rom_desc->Type != I2C_DESC_TYPE_ION) || (start_address > TI_MAX_I2C_SIZE))
+		status = -ENODEV;
+
+ExitTiValidateI2cImage:	
+	kfree (buffer);
+	kfree (rom_desc);
+	return status;
+}
+
+static int TIReadManufDescriptor (struct edgeport_serial *serial, __u8 *buffer)
+{
+	int status;
+	int start_address;
+	struct ti_i2c_desc *rom_desc;
+	struct edge_ti_manuf_descriptor *desc;
+
+	rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
+	if (!rom_desc) {
+		err ("%s - out of memory", __FUNCTION__);
+		return -ENOMEM;
+	}
+	start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_ION, rom_desc);
+
+	if (!start_address) {
+		dbg ("%s - Edge Descriptor not found in I2C", __FUNCTION__);
+		status = -ENODEV;
+		goto exit;
+	}
+
+	// Read the descriptor data
+	status = TIReadRom (serial,
+				start_address+sizeof(struct ti_i2c_desc),
+				rom_desc->Size,
+				buffer);
+	if (status)
+		goto exit;
+	
+	status = ValidChecksum(rom_desc, buffer);
+	
+	desc = (struct edge_ti_manuf_descriptor *)buffer;
+	dbg ( "%s - IonConfig      0x%x", __FUNCTION__, desc->IonConfig 	);
+	dbg ( "%s - Version          %d", __FUNCTION__, desc->Version	  	);
+	dbg ( "%s - Cpu/Board      0x%x", __FUNCTION__, desc->CpuRev_BoardRev	);
+	dbg ( "%s - NumPorts         %d", __FUNCTION__, desc->NumPorts  	);	
+	dbg ( "%s - NumVirtualPorts  %d", __FUNCTION__, desc->NumVirtualPorts	);	
+	dbg ( "%s - TotalPorts       %d", __FUNCTION__, desc->TotalPorts  	);	
+
+exit:
+	kfree (rom_desc);
+	return status;
+}
+
+/* Build firmware header used for firmware update */
+static int BuildI2CFirmwareHeader (__u8 *header)
+{
+	__u8 *buffer;
+	int buffer_size;
+	int i;
+	__u8 cs = 0;
+	struct ti_i2c_desc *i2c_header;
+	struct ti_i2c_image_header *img_header;
+	struct ti_i2c_firmware_rec *firmware_rec;
+
+	// In order to update the I2C firmware we must change the type 2 record to type 0xF2.
+	// This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver 
+	// will download the latest firmware (padded to 15.5k) into the UMP ram. 
+	// And finally when the device comes back up in download mode the driver will cause 
+	// the new firmware to be copied from the UMP Ram to I2C and the firmware will update
+	// the record type from 0xf2 to 0x02.
+	
+	// Allocate a 15.5k buffer + 2 bytes for version number (Firmware Record)
+	buffer_size = (((1024 * 16) - 512 )+ sizeof(struct ti_i2c_firmware_rec));
+
+	buffer = kmalloc (buffer_size, GFP_KERNEL);
+	if (!buffer) {
+		err ("%s - out of memory", __FUNCTION__);
+		return -ENOMEM;
+	}
+	
+	// Set entire image of 0xffs
+	memset (buffer, 0xff, buffer_size);
+
+	// Copy version number into firmware record
+	firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
+
+	firmware_rec->Ver_Major	= OperationalCodeImageVersion.MajorVersion;
+	firmware_rec->Ver_Minor	= OperationalCodeImageVersion.MinorVersion;
+
+	// Pointer to fw_down memory image
+	img_header = (struct ti_i2c_image_header *)&PagableOperationalCodeImage[0];
+
+	memcpy (buffer + sizeof(struct ti_i2c_firmware_rec),
+		&PagableOperationalCodeImage[sizeof(struct ti_i2c_image_header)],
+		img_header->Length);
+
+	for (i=0; i < buffer_size; i++) {
+		cs = (__u8)(cs + buffer[i]);
+	}
+
+	kfree (buffer);
+
+	// Build new header
+	i2c_header =  (struct ti_i2c_desc *)header;
+	firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
+	
+	i2c_header->Type	= I2C_DESC_TYPE_FIRMWARE_BLANK;
+	i2c_header->Size	= (__u16)buffer_size;
+	i2c_header->CheckSum	= cs;
+	firmware_rec->Ver_Major	= OperationalCodeImageVersion.MajorVersion;
+	firmware_rec->Ver_Minor	= OperationalCodeImageVersion.MinorVersion;
+
+	return 0;
+}
+
+/* Try to figure out what type of I2c we have */
+static int TIGetI2cTypeInBootMode (struct edgeport_serial *serial)
+{
+	int status;
+	__u8 data;
+		
+	// Try to read type 2
+	status = TIReadVendorRequestSync (serial->serial->dev,
+					UMPC_MEMORY_READ,		// Request
+					DTK_ADDR_SPACE_I2C_TYPE_II,	// wValue (Address type)
+					0,		 		// wIndex
+					&data,				// TransferBuffer
+					0x01);				// TransferBufferLength
+	if (status)
+		dbg ("%s - read 2 status error = %d", __FUNCTION__, status);
+	else
+		dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
+	if ((!status) && data == 0x52) {
+		dbg ("%s - ROM_TYPE_II", __FUNCTION__);
+		serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
+		return 0;
+	}
+
+	// Try to read type 3
+	status = TIReadVendorRequestSync (serial->serial->dev,
+					UMPC_MEMORY_READ,		// Request
+					DTK_ADDR_SPACE_I2C_TYPE_III,	// wValue (Address type)
+					0,				// wIndex
+					&data,				// TransferBuffer
+					0x01);				// TransferBufferLength
+	if (status)
+		dbg ("%s - read 3 status error = %d", __FUNCTION__, status);
+	else
+		dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
+	if ((!status) && data == 0x52) {
+		dbg ("%s - ROM_TYPE_III", __FUNCTION__);
+		serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
+		return 0;
+	}
+
+	dbg ("%s - Unknown", __FUNCTION__);
+	serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
+	return -ENODEV;
+}
+
+static int TISendBulkTransferSync (struct usb_serial *serial, void *buffer, int length, int *num_sent)
+{
+	int status;
+
+	status = usb_bulk_msg (serial->dev,
+				usb_sndbulkpipe(serial->dev,
+						serial->port[0].bulk_out_endpointAddress),
+				buffer,
+				length,
+				num_sent,
+				HZ);
+	return status;
+}
+
+/* Download given firmware image to the device (IN BOOT MODE) */
+static int TIDownloadCodeImage (struct edgeport_serial *serial, __u8 *image, int image_length)
+{
+	int status = 0;
+	int pos;
+	int transfer;
+	int done;
+
+	// Transfer firmware image
+	for (pos = 0; pos < image_length; ) {
+		// Read the next buffer from file
+		transfer = image_length - pos;
+		if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
+			transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
+
+		// Transfer data
+		status = TISendBulkTransferSync (serial->serial, &image[pos], transfer, &done);
+		if (status)
+			break;
+		// Advance buffer pointer
+		pos += done;
+	}
+
+	return status;
+}
+
+// FIXME!!!
+static int TIConfigureBootDevice (struct usb_device *dev)
+{
+	return 0;
+}
+
+/**
+ * DownloadTIFirmware - Download run-time operating firmware to the TI5052
+ * 
+ * This routine downloads the main operating code into the TI5052, using the
+ * boot code already burned into E2PROM or ROM.
+ */
+static int TIDownloadFirmware (struct edgeport_serial *serial)
+{
+	int status = 0;
+	int start_address;
+	struct edge_ti_manuf_descriptor *ti_manuf_desc;
+	struct usb_interface_descriptor *interface;
+	int download_cur_ver;
+	int download_new_ver;
+
+	/* This routine is entered by both the BOOT mode and the Download mode
+	 * We can determine which code is running by the reading the config
+	 * descriptor and if we have only one bulk pipe it is in boot mode
+	 */
+	serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
+
+	/* Default to type 2 i2c */
+	serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
+
+	status = TIChooseConfiguration (serial->serial->dev);
+	if (status)
+		return status;
+
+	interface = serial->serial->dev->config->interface->altsetting;
+	if (!interface) {
+		err ("%s - no interface set, error!", __FUNCTION__);
+		return -ENODEV;
+	}
+
+	// Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
+	// if we have more than one endpoint we are definitely in download mode
+	if (interface->bNumEndpoints > 1)
+		serial->product_info.TiMode = TI_MODE_DOWNLOAD;
+	else
+		// Otherwise we will remain in configuring mode
+		serial->product_info.TiMode = TI_MODE_CONFIGURING;
+
+	// Save Download Version Number
+	OperationalCodeImageVersion.MajorVersion = PagableOperationalCodeImageVersion.MajorVersion;
+	OperationalCodeImageVersion.MinorVersion = PagableOperationalCodeImageVersion.MinorVersion;
+	OperationalCodeImageVersion.BuildNumber	 = PagableOperationalCodeImageVersion.BuildNumber;
+
+	/********************************************************************/
+	/* Download Mode */
+	/********************************************************************/
+	if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
+		struct ti_i2c_desc *rom_desc;
+
+		dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN DOWNLOAD MODE>>>>>>>>>>", __FUNCTION__);
+
+		status = TiValidateI2cImage (serial);
+		if (status) {
+			dbg ("%s - <<<<<<<<<<<<<<<DOWNLOAD MODE -- BAD I2C >>>>>>>>>>",
+			     __FUNCTION__);
+			return status;
+		}
+		
+		/* Validate Hardware version number
+		 * Read Manufacturing Descriptor from TI Based Edgeport
+		 */
+		ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
+		if (!ti_manuf_desc) {
+			err ("%s - out of memory.", __FUNCTION__);
+			return -ENOMEM;
+		}
+		status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
+		if (status) {
+			kfree (ti_manuf_desc);
+			return status;
+		}
+
+		// Check version number of ION descriptor
+		if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
+			dbg ( "%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__, 
+			     TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
+			kfree (ti_manuf_desc);
+		   	return -EINVAL;
+		}
+
+		rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
+		if (!rom_desc) {
+			err ("%s - out of memory.", __FUNCTION__);
+			kfree (ti_manuf_desc);
+			return -ENOMEM;
+		}
+
+		// Search for type 2 record (firmware record)
+		if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc)) != 0) {
+			struct ti_i2c_firmware_rec *firmware_version;
+			__u8 record;
+
+			dbg ("%s - Found Type FIRMWARE (Type 2) record", __FUNCTION__);
+
+			firmware_version = kmalloc (sizeof (*firmware_version), GFP_KERNEL);
+			if (!firmware_version) {
+				err ("%s - out of memory.", __FUNCTION__);
+				kfree (rom_desc);
+				kfree (ti_manuf_desc);
+				return -ENOMEM;
+			}
+
+			// Validate version number				
+			// Read the descriptor data
+			status = TIReadRom (serial,
+					start_address+sizeof(struct ti_i2c_desc),
+					sizeof(struct ti_i2c_firmware_rec),
+					(__u8 *)firmware_version);
+			if (status) {
+				kfree (firmware_version);
+				kfree (rom_desc);
+				kfree (ti_manuf_desc);
+				return status;
+			}
+
+			// Check version number of download with current version in I2c
+			download_cur_ver = (firmware_version->Ver_Major << 8) + 
+					   (firmware_version->Ver_Minor);
+			download_new_ver = (OperationalCodeImageVersion.MajorVersion << 8) +
+					   (OperationalCodeImageVersion.MinorVersion);
+
+			dbg ("%s - >>>Firmware Versions Device %d.%d  Driver %d.%d",
+			     __FUNCTION__,
+			     firmware_version->Ver_Major,
+			     firmware_version->Ver_Minor,
+			     OperationalCodeImageVersion.MajorVersion,
+			     OperationalCodeImageVersion.MinorVersion);
+
+			// Check if we have an old version in the I2C and update if necessary
+			if (download_cur_ver != download_new_ver) {
+				dbg ("%s - Update I2C Download from %d.%d to %d.%d",
+				     __FUNCTION__,
+				     firmware_version->Ver_Major,
+				     firmware_version->Ver_Minor,
+				     OperationalCodeImageVersion.MajorVersion,
+				     OperationalCodeImageVersion.MinorVersion);
+
+				// In order to update the I2C firmware we must change the type 2 record to type 0xF2.
+				// This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver 
+				// will download the latest firmware (padded to 15.5k) into the UMP ram. 
+				// And finally when the device comes back up in download mode the driver will cause 
+				// the new firmware to be copied from the UMP Ram to I2C and the firmware will update
+				// the record type from 0xf2 to 0x02.
+
+				record = I2C_DESC_TYPE_FIRMWARE_BLANK;
+
+				// Change the I2C Firmware record type to 0xf2 to trigger an update
+				status = TIWriteRom (serial,
+							start_address,
+							sizeof(record),
+							&record);
+				if (status) {
+					kfree (firmware_version);
+					kfree (rom_desc);
+					kfree (ti_manuf_desc);
+					return status;
+				}
+
+				// verify the write -- must do this in order for write to 
+				// complete before we do the hardware reset
+				status = TIReadRom (serial,
+							start_address,
+							sizeof(record),
+							&record);
+
+				if (status) {
+					kfree (firmware_version);
+					kfree (rom_desc);
+					kfree (ti_manuf_desc);
+					return status;
+				}
+
+				if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
+					err ("%s - error resetting device", __FUNCTION__);
+					kfree (firmware_version);
+					kfree (rom_desc);
+					kfree (ti_manuf_desc);
+					return -ENODEV;
+				}
+
+				dbg ("%s - HARDWARE RESET", __FUNCTION__);
+
+				// Reset UMP -- Back to BOOT MODE
+				status = TISendVendorRequestSync (serial->serial->dev,
+								UMPC_HARDWARE_RESET,	// Request
+								0,			// wValue
+								0,			// wIndex
+								NULL,			// TransferBuffer
+								0);			// TransferBufferLength
+
+				dbg ( "%s - HARDWARE RESET return %d", __FUNCTION__, status);
+
+				/* return an error on purpose. */
+				return -ENODEV;
+			}
+		}
+		// Search for type 0xF2 record (firmware blank record)
+		else if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
+			#define HEADER_SIZE	(sizeof(struct ti_i2c_desc) + sizeof(struct ti_i2c_firmware_rec))
+			__u8 *header;
+			__u8 *vheader;
+
+			header  = kmalloc (HEADER_SIZE, GFP_KERNEL);
+			if (!header) {
+				err ("%s - out of memory.", __FUNCTION__);
+				kfree (rom_desc);
+				kfree (ti_manuf_desc);
+				return -ENOMEM;
+			}
+				
+			vheader = kmalloc (HEADER_SIZE, GFP_KERNEL);
+			if (!vheader) {
+				err ("%s - out of memory.", __FUNCTION__);
+				kfree (header);
+				kfree (rom_desc);
+				kfree (ti_manuf_desc);
+				return -ENOMEM;
+			}
+			
+			dbg ("%s - Found Type BLANK FIRMWARE (Type F2) record", __FUNCTION__);
+
+			// In order to update the I2C firmware we must change the type 2 record to type 0xF2.
+			// This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver 
+			// will download the latest firmware (padded to 15.5k) into the UMP ram. 
+			// And finally when the device comes back up in download mode the driver will cause 
+			// the new firmware to be copied from the UMP Ram to I2C and the firmware will update
+			// the record type from 0xf2 to 0x02.
+			status = BuildI2CFirmwareHeader(header);
+			if (status) {
+				kfree (vheader);
+				kfree (header);
+				kfree (rom_desc);
+				kfree (ti_manuf_desc);
+				return status;
+			}
+
+			// Update I2C with type 0xf2 record with correct size and checksum
+			status = TIWriteRom (serial,
+						start_address,
+						HEADER_SIZE,
+						header);
+			if (status) {
+				kfree (vheader);
+				kfree (header);
+				kfree (rom_desc);
+				kfree (ti_manuf_desc);
+				return status;
+			}
+
+			// verify the write -- must do this in order for write to 
+			// complete before we do the hardware reset
+			status = TIReadRom (serial,
+						start_address,
+						HEADER_SIZE,
+						vheader);
+
+			if (status) {
+				dbg ("%s - can't read header back", __FUNCTION__);
+				kfree (vheader);
+				kfree (header);
+				kfree (rom_desc);
+				kfree (ti_manuf_desc);
+				return status;
+			}
+			if (memcmp(vheader, header, HEADER_SIZE)) {
+				dbg ("%s - write download record failed", __FUNCTION__);
+				kfree (vheader);
+				kfree (header);
+				kfree (rom_desc);
+				kfree (ti_manuf_desc);
+				return status;
+			}
+
+			kfree (vheader);
+			kfree (header);
+
+			dbg ("%s - Start firmware update", __FUNCTION__);
+
+			// Tell firmware to copy download image into I2C 
+			status = TISendVendorRequestSync (serial->serial->dev,
+						UMPC_COPY_DNLD_TO_I2C,	// Request
+						0,			// wValue 
+						0,			// wIndex
+						NULL,			// TransferBuffer
+						0);			// TransferBufferLength
+
+		  	dbg ("%s - Update complete 0x%x", __FUNCTION__, status);
+			if (status) {
+				dbg ("%s - UMPC_COPY_DNLD_TO_I2C failed", __FUNCTION__);
+				kfree (rom_desc);
+				kfree (ti_manuf_desc);
+				return status;
+			}
+		}
+
+		// The device is running the download code
+		kfree (rom_desc);
+		kfree (ti_manuf_desc);
+		return 0;
+	}
+
+	/********************************************************************/
+	/* Boot Mode */
+	/********************************************************************/
+	dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN BOOT MODE>>>>>>>>>>>>>>>",
+	     __FUNCTION__);
+
+	// Configure the TI device so we can use the BULK pipes for download
+	status = TIConfigureBootDevice (serial->serial->dev);
+	if (status)
+		return status;
+
+	if (serial->serial->dev->descriptor.idVendor != USB_VENDOR_ID_ION) {
+		dbg ("%s - VID = 0x%x", __FUNCTION__,
+		     serial->serial->dev->descriptor.idVendor);
+		serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
+		goto StayInBootMode;
+	}
+
+	// We have an ION device (I2c Must be programmed)
+	// Determine I2C image type
+	if (TIGetI2cTypeInBootMode(serial)) {
+		goto StayInBootMode;
+	}
+
+	// Registry variable set?
+	if (TIStayInBootMode) {
+		dbg ("%s - TIStayInBootMode", __FUNCTION__);
+		goto StayInBootMode;
+	}
+
+	// Check for ION Vendor ID and that the I2C is valid
+	if (!TiValidateI2cImage(serial)) {
+		struct ti_i2c_image_header *header;
+		int i;
+		__u8 cs = 0;
+		__u8 *buffer;
+		int buffer_size;
+
+		/* Validate Hardware version number
+		 * Read Manufacturing Descriptor from TI Based Edgeport
+		 */
+		ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
+		if (!ti_manuf_desc) {
+			err ("%s - out of memory.", __FUNCTION__);
+			return -ENOMEM;
+		}
+		status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
+		if (status) {
+			kfree (ti_manuf_desc);
+			goto StayInBootMode;
+		}
+
+		// Check for version 2
+		if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
+			dbg ("%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
+			     TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
+			kfree (ti_manuf_desc);
+			goto StayInBootMode;
+		}
+
+		kfree (ti_manuf_desc);
+
+		// In order to update the I2C firmware we must change the type 2 record to type 0xF2.
+		// This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver 
+		// will download the latest firmware (padded to 15.5k) into the UMP ram. 
+		// And finally when the device comes back up in download mode the driver will cause 
+		// the new firmware to be copied from the UMP Ram to I2C and the firmware will update
+		// the record type from 0xf2 to 0x02.
+		
+		/*
+		 * Do we really have to copy the whole firmware image,
+		 * or could we do this in place!
+		 */
+
+		// Allocate a 15.5k buffer + 3 byte header
+		buffer_size = (((1024 * 16) - 512) + sizeof(struct ti_i2c_image_header));
+		buffer = kmalloc (buffer_size, GFP_KERNEL);
+		if (!buffer) {
+			err ("%s - out of memory", __FUNCTION__);
+			return -ENOMEM;
+		}
+		
+		// Initialize the buffer to 0xff (pad the buffer)
+		memset (buffer, 0xff, buffer_size);
+
+		memcpy (buffer, &PagableOperationalCodeImage[0], PagableOperationalCodeSize);
+
+		for(i = sizeof(struct ti_i2c_image_header); i < buffer_size; i++) {
+			cs = (__u8)(cs + buffer[i]);
+		}
+		
+		header = (struct ti_i2c_image_header *)buffer;
+		
+		// update length and checksum after padding
+		header->Length 	 = (__u16)(buffer_size - sizeof(struct ti_i2c_image_header));
+		header->CheckSum = cs;
+
+		// Download the operational code 
+		dbg ("%s - Downloading operational code image (TI UMP)", __FUNCTION__);
+		status = TIDownloadCodeImage (serial, buffer, buffer_size);
+
+		kfree (buffer);
+
+		if (status) {
+	  		dbg ("%s - Error downloading operational code image", __FUNCTION__);
+			return status;
+		}
+
+		// Device will reboot
+		serial->product_info.TiMode = TI_MODE_TRANSITIONING;
+
+  		dbg ("%s - Download successful -- Device rebooting...", __FUNCTION__);
+
+		/* return an error on purpose */
+		return -ENODEV;
+	}
+
+StayInBootMode:
+	// Eprom is invalid or blank stay in boot mode
+	dbg ("%s - <<<<<<<<<<<<<<<STAYING IN BOOT MODE>>>>>>>>>>>>", __FUNCTION__);
+	serial->product_info.TiMode = TI_MODE_BOOT;
+
+	return 0;
+}
+
+
+static int TISetDtr (struct edgeport_port *port)
+{
+	int port_number = port->port->number - port->port->serial->minor;
+
+	dbg ("%s", __FUNCTION__);
+	port->shadow_mcr |= MCR_DTR;
+
+	return TIWriteCommandSync (port->port->serial->dev,
+				UMPC_SET_CLR_DTR,
+				(__u8)(UMPM_UART1_PORT + port_number),
+				1,	/* set */
+				NULL,
+				0);
+}
+
+static int TIClearDtr (struct edgeport_port *port)
+{
+	int port_number = port->port->number - port->port->serial->minor;
+
+	dbg ("%s", __FUNCTION__);
+	port->shadow_mcr &= ~MCR_DTR;
+
+	return TIWriteCommandSync (port->port->serial->dev,
+				UMPC_SET_CLR_DTR,
+				(__u8)(UMPM_UART1_PORT + port_number),
+				0,	/* clear */
+				NULL,
+				0);
+}
+
+static int TISetRts (struct edgeport_port *port)
+{
+	int port_number = port->port->number - port->port->serial->minor;
+
+	dbg ("%s", __FUNCTION__);
+	port->shadow_mcr |= MCR_RTS;
+
+	return TIWriteCommandSync (port->port->serial->dev,
+				UMPC_SET_CLR_RTS,
+				(__u8)(UMPM_UART1_PORT + port_number),
+				1,	/* set */
+				NULL,
+				0);
+}
+
+static int TIClearRts (struct edgeport_port *port)
+{
+	int port_number = port->port->number - port->port->serial->minor;
+
+	dbg ("%s", __FUNCTION__);
+	port->shadow_mcr &= ~MCR_RTS;
+
+	return TIWriteCommandSync (port->port->serial->dev,
+				UMPC_SET_CLR_RTS,
+				(__u8)(UMPM_UART1_PORT + port_number),
+				0,	/* clear */
+				NULL,
+				0);
+}
+
+static int TISetLoopBack (struct edgeport_port *port)
+{
+	int port_number = port->port->number - port->port->serial->minor;
+
+	dbg ("%s", __FUNCTION__);
+
+	return TIWriteCommandSync (port->port->serial->dev,
+				UMPC_SET_CLR_LOOPBACK,
+				(__u8)(UMPM_UART1_PORT + port_number),
+				1,	/* set */
+				NULL,
+				0);
+}
+
+static int TIClearLoopBack (struct edgeport_port *port)
+{
+	int port_number = port->port->number - port->port->serial->minor;
+
+	dbg ("%s", __FUNCTION__);
+
+	return TIWriteCommandSync (port->port->serial->dev,
+				UMPC_SET_CLR_LOOPBACK,
+				(__u8)(UMPM_UART1_PORT + port_number),
+				0,	/* clear */
+				NULL,
+				0);
+}
+
+static int TISetBreak (struct edgeport_port *port)
+{
+	int port_number = port->port->number - port->port->serial->minor;
+
+	dbg ("%s", __FUNCTION__);
+
+	return TIWriteCommandSync (port->port->serial->dev,
+				UMPC_SET_CLR_BREAK,
+				(__u8)(UMPM_UART1_PORT + port_number),
+				1,	/* set */
+				NULL,
+				0);
+}
+
+static int TIClearBreak (struct edgeport_port *port)
+{
+	int port_number = port->port->number - port->port->serial->minor;
+
+	dbg ("%s", __FUNCTION__);
+
+	return TIWriteCommandSync (port->port->serial->dev,
+				UMPC_SET_CLR_BREAK,
+				(__u8)(UMPM_UART1_PORT + port_number),
+				0,	/* clear */
+				NULL,
+				0);
+}
+
+static int TIRestoreMCR (struct edgeport_port *port, __u8 mcr)
+{
+	int status = 0;
+
+	dbg ("%s - %x", __FUNCTION__, mcr);
+
+	if (mcr & MCR_DTR)
+		status = TISetDtr (port);
+	else
+		status = TIClearDtr (port);
+
+	if (status)
+		return status;
+
+	if (mcr & MCR_RTS)
+		status = TISetRts (port);
+	else
+		status = TIClearRts (port);
+
+	if (status)
+		return status;
+
+	if (mcr & MCR_LOOPBACK)
+		status = TISetLoopBack (port);
+	else
+		status = TIClearLoopBack (port);
+
+	return status;
+}
+
+
+
+/* Convert TI LSR to standard UART flags */
+static __u8 MapLineStatus (__u8 ti_lsr)
+{
+	__u8 lsr = 0;
+
+#define MAP_FLAG(flagUmp, flagUart)    \
+	if (ti_lsr & flagUmp) lsr |= flagUart;
+
+	MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)	/* overrun */
+	MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)	/* parity error */
+	MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)	/* framing error */
+	MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)	/* break detected */
+	MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)	/* receive data available */
+	MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)	/* transmit holding register empty */
+
+#undef MAP_FLAG
+
+	return lsr;
+}
+
+static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr)
+{
+	struct async_icount *icount;
+
+	dbg ("%s - %02x", __FUNCTION__, msr);
+
+	if (msr & (MSR_DELTA_CTS | MSR_DELTA_DSR | MSR_DELTA_RI | MSR_DELTA_CD)) {
+		icount = &edge_port->icount;
+
+		/* update input line counters */
+		if (msr & MSR_DELTA_CTS)
+			icount->cts++;
+		if (msr & MSR_DELTA_DSR)
+			icount->dsr++;
+		if (msr & MSR_DELTA_CD)
+			icount->dcd++;
+		if (msr & MSR_DELTA_RI)
+			icount->rng++;
+		wake_up_interruptible (&edge_port->delta_msr_wait);
+	}
+
+	/* Save the new modem status */
+	edge_port->shadow_msr = msr & 0xf0;
+
+	return;
+}
+
+static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8 lsr, __u8 data)
+{
+	struct async_icount *icount;
+	__u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
+
+	dbg ("%s - %02x", __FUNCTION__, new_lsr);
+
+	edge_port->shadow_lsr = lsr;
+
+	if (new_lsr & LSR_BREAK) {
+		/*
+		 * Parity and Framing errors only count if they
+		 * occur exclusive of a break being received.
+		 */
+		new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
+	}
+
+	/* Place LSR data byte into Rx buffer */
+	if (lsr_data && edge_port->port->tty) {
+		tty_insert_flip_char(edge_port->port->tty, data, 0);
+		tty_flip_buffer_push(edge_port->port->tty);
+	}
+
+	/* update input line counters */
+	icount = &edge_port->icount;
+	if (new_lsr & LSR_BREAK)
+		icount->brk++;
+	if (new_lsr & LSR_OVER_ERR)
+		icount->overrun++;
+	if (new_lsr & LSR_PAR_ERR)
+		icount->parity++;
+	if (new_lsr & LSR_FRM_ERR)
+		icount->frame++;
+}
+
+
+static void edge_interrupt_callback (struct urb *urb)
+{
+	struct edgeport_serial	*edge_serial = (struct edgeport_serial *)urb->context;
+	struct usb_serial_port *port;
+	struct edgeport_port *edge_port;
+	unsigned char *data = urb->transfer_buffer;
+	int length = urb->actual_length;
+	int port_number;
+	int function;
+	__u8 lsr;
+	__u8 msr;
+
+	dbg("%s", __FUNCTION__);
+
+	if (serial_paranoia_check (edge_serial->serial, __FUNCTION__)) {
+		return;
+	}
+
+	if (urb->status) {
+		dbg("%s - nonzero control read status received: %d", __FUNCTION__, urb->status);
+		return;
+	}
+
+	if (!length) {
+		dbg ("%s - no data in urb", __FUNCTION__);
+		return;
+	}
+		
+	usb_serial_debug_data (__FILE__, __FUNCTION__, length, data);
+		
+	if (length != 2) {
+		dbg ("%s - expecting packet of size 2, got %d", __FUNCTION__, length);
+		return;
+	}
+
+	port_number = TIUMP_GET_PORT_FROM_CODE (data[0]);
+	function    = TIUMP_GET_FUNC_FROM_CODE (data[0]);
+	dbg ("%s - port_number %d, function %d, info 0x%x",
+	     __FUNCTION__, port_number, function, data[1]);
+	port = &edge_serial->serial->port[port_number];
+	if (port_paranoia_check (port, __FUNCTION__)) {
+		dbg ("%s - change found for port that is not present",
+		     __FUNCTION__);
+		return;
+	}
+	edge_port = port->private;
+	if (!edge_port) {
+		dbg ("%s - edge_port not found", __FUNCTION__);
+		return;
+	}
+	switch (function) {
+	case TIUMP_INTERRUPT_CODE_LSR:
+		lsr = MapLineStatus(data[1]);
+		if (lsr & UMP_UART_LSR_DATA_MASK) {
+			/* Save the LSR event for bulk read completion routine */
+			dbg ("%s - LSR Event Port %u LSR Status = %02x",
+			     __FUNCTION__, port_number, lsr);
+			edge_port->lsr_event = 1;
+			edge_port->lsr_mask = lsr;
+		} else {
+			dbg ("%s - ===== Port %d LSR Status = %02x ======",
+			     __FUNCTION__, port_number, lsr);
+			handle_new_lsr (edge_port, 0, lsr, 0);
+		}
+		break;
+
+	case TIUMP_INTERRUPT_CODE_MSR:	// MSR
+		/* Copy MSR from UMP */
+		msr = data[1];
+		dbg ("%s - ===== Port %u MSR Status = %02x ======\n",
+		     __FUNCTION__, port_number, msr);
+		handle_new_msr (edge_port, msr);
+		break;
+
+	default:
+		err ("%s - Unknown Interrupt code from UMP %x\n",
+		     __FUNCTION__, data[1]);
+		break;
+		
+	}
+}
+
+static void edge_bulk_in_callback (struct urb *urb)
+{
+	struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
+	unsigned char *data = urb->transfer_buffer;
+	struct tty_struct *tty;
+	int status;
+	int i;
+	int port_number;
+
+	dbg("%s", __FUNCTION__);
+
+	if (port_paranoia_check (edge_port->port, __FUNCTION__))
+		return;
+
+	if (urb->status) {
+		dbg ("%s - nonzero read bulk status received: %d",
+		     __FUNCTION__, urb->status);
+
+		if (urb->status == -EPIPE) {
+			/* clear any problem that might have happened on this pipe */
+			usb_clear_halt (edge_port->port->serial->dev, urb->pipe);
+			goto exit;
+		}
+		return;
+	}
+
+	port_number = edge_port->port->number - edge_port->port->serial->minor;
+
+	if (edge_port->lsr_event) {
+		edge_port->lsr_event = 0;
+		dbg ("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
+		     __FUNCTION__, port_number, edge_port->lsr_mask, *data);
+		handle_new_lsr (edge_port, 1, edge_port->lsr_mask, *data);
+		/* Adjust buffer length/pointer */
+		--urb->actual_length;
+		++data;
+	}
+
+	tty = edge_port->port->tty;
+	if (tty && urb->actual_length) {
+		usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data);
+
+		if (edge_port->close_pending) {
+			dbg ("%s - close is pending, dropping data on the floor.", __FUNCTION__);
+		} else {
+			for (i = 0; i < urb->actual_length ; ++i) {
+				/* if we insert more than TTY_FLIPBUF_SIZE characters,
+				 * we drop them. */
+				if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+					tty_flip_buffer_push(tty);
+				}
+				/* this doesn't actually push the data through unless
+				 * tty->low_latency is set */
+				tty_insert_flip_char(tty, data[i], 0);
+			}
+			tty_flip_buffer_push(tty);
+		}
+		edge_port->icount.rx += urb->actual_length;
+	}
+
+exit:
+	/* continue always trying to read */
+	urb->dev = edge_port->port->serial->dev;
+	status = usb_submit_urb (urb);
+	if (status)
+		err ("%s - usb_submit_urb failed with result %d",
+		     __FUNCTION__, status);
+}
+
+static void edge_bulk_out_callback (struct urb *urb)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
+	struct tty_struct *tty;
+
+	dbg ("%s - port %d", __FUNCTION__, port->number);
+
+	if (!serial) {
+		dbg ("%s - bad serial pointer, exiting", __FUNCTION__);
+		return;
+	}
+
+	if (urb->status) {
+		dbg ("%s - nonzero write bulk status received: %d",
+		     __FUNCTION__, urb->status);
+
+		if (urb->status == -EPIPE) {
+			/* clear any problem that might have happened on this pipe */
+			usb_clear_halt (serial->dev, urb->pipe);
+		}
+		return;
+	}
+
+	tty = port->tty;
+	if (tty) {
+		/* let the tty driver wakeup if it has a special write_wakeup function */
+		if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) {
+			(tty->ldisc.write_wakeup)(tty);
+		}
+
+		/* tell the tty driver that something has changed */
+		wake_up_interruptible(&tty->write_wait);
+	}
+}
+
+static int edge_open (struct usb_serial_port *port, struct file * filp)
+{
+	struct edgeport_port *edge_port = (struct edgeport_port *)port->private;
+	struct edgeport_serial *edge_serial;
+	struct usb_device *dev;
+	struct urb *urb;
+	int port_number;
+	int status;
+	u16 open_settings;
+	u8 transaction_timeout;
+
+	if (port_paranoia_check (port, __FUNCTION__))
+		return -ENODEV;
+	
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	if (edge_port == NULL)
+		return -ENODEV;
+
+	/* force low_latency on so that our tty_push actually forces the data through, 
+	   otherwise it is scheduled, and with high data rates (like with OHCI) data
+	   can get lost. */
+	if (port->tty)
+		port->tty->low_latency = 1;
+
+	port_number = port->number - port->serial->minor;
+	switch (port_number) {
+		case 0:
+			edge_port->uart_base = UMPMEM_BASE_UART1;
+			edge_port->dma_address = UMPD_OEDB1_ADDRESS;
+			break;
+		case 1:
+			edge_port->uart_base = UMPMEM_BASE_UART2;
+			edge_port->dma_address = UMPD_OEDB2_ADDRESS;
+			break;
+		default:
+			err ("Unknown port number!!!");
+			return -ENODEV;
+	}
+
+	dbg ("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
+	     __FUNCTION__, port_number, edge_port->uart_base, edge_port->dma_address);
+
+	dev = port->serial->dev;
+
+	memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
+	init_waitqueue_head (&edge_port->delta_msr_wait);
+
+	/* turn off loopback */
+	status = TIClearLoopBack (edge_port);
+	if (status)
+		return status;
+	
+	/* set up the port settings */
+	edge_set_termios (port, NULL);
+
+	/* open up the port */
+
+	/* milliseconds to timeout for DMA transfer */
+	transaction_timeout = 2;
+
+	edge_port->ump_read_timeout = max (20, ((transaction_timeout * 3) / 2) );
+
+	// milliseconds to timeout for DMA transfer
+	open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 
+			     UMP_PIPE_TRANS_TIMEOUT_ENA | 
+			     (transaction_timeout << 2));
+
+	dbg ("%s - Sending UMPC_OPEN_PORT", __FUNCTION__);
+
+	/* Tell TI to open and start the port */
+	status = TIWriteCommandSync (dev,
+					UMPC_OPEN_PORT,
+					(u8)(UMPM_UART1_PORT + port_number),
+					open_settings,
+					NULL,
+					0);
+	if (status)
+		return status;
+
+	/* Start the DMA? */
+	status = TIWriteCommandSync (dev,
+					UMPC_START_PORT,
+					(u8)(UMPM_UART1_PORT + port_number),
+					0,
+					NULL,
+					0);
+	if (status)
+		return status;
+
+	/* Clear TX and RX buffers in UMP */
+	status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
+	if (status)
+		return status;
+
+	/* Read Initial MSR */
+	status = TIReadVendorRequestSync (dev,
+					UMPC_READ_MSR,	// Request
+					0,		// wValue
+					(__u16)(UMPM_UART1_PORT + port_number),	// wIndex (Address)
+					&edge_port->shadow_msr,			// TransferBuffer
+					1);					// TransferBufferLength
+	if (status)
+		return status;
+
+	dbg ("ShadowMSR 0x%X", edge_port->shadow_msr);
+ 
+	edge_serial = edge_port->edge_serial;
+	if (edge_serial->num_ports_open == 0) {
+		dbg ("%s - setting up bulk in urb", __FUNCTION__);
+		/* we are the first port to be opened, let's post the interrupt urb */
+		urb = edge_serial->serial->port[0].interrupt_in_urb;
+		if (!urb) {
+			err ("%s - no interrupt urb present, exiting", __FUNCTION__);
+			return -EINVAL;
+		}
+		urb->complete = edge_interrupt_callback;
+		urb->context = edge_serial;
+		urb->dev = dev;
+		status = usb_submit_urb (urb);
+		if (status) {
+			err ("%s - usb_submit_urb failed with value %d", __FUNCTION__, status);
+			return status;
+		}
+	}
+
+	/*
+	 * reset the data toggle on the bulk endpoints to work around bug in
+	 * host controllers where things get out of sync some times
+	 */
+	usb_clear_halt (dev, port->write_urb->pipe);
+	usb_clear_halt (dev, port->read_urb->pipe);
+
+	/* start up our bulk read urb */
+	urb = port->read_urb;
+	if (!urb) {
+		err ("%s - no read urb present, exiting", __FUNCTION__);
+		return -EINVAL;
+	}
+	urb->complete = edge_bulk_in_callback;
+	urb->context = edge_port;
+	urb->dev = dev;
+	status = usb_submit_urb (urb);
+	if (status) {
+		err ("%s - read bulk usb_submit_urb failed with value %d", __FUNCTION__, status);
+		return status;
+	}
+
+	++edge_serial->num_ports_open;
+
+	dbg("%s - exited", __FUNCTION__);
+
+	return 0;
+}
+
+static void edge_close (struct usb_serial_port *port, struct file * filp)
+{
+	struct usb_serial *serial;
+	struct edgeport_serial *edge_serial;
+	struct edgeport_port *edge_port;
+	int port_number;
+	int status;
+
+	if (port_paranoia_check (port, __FUNCTION__))
+		return;
+	
+	dbg("%s - port %d", __FUNCTION__, port->number);
+			 
+	serial = get_usb_serial (port, __FUNCTION__);
+	if (!serial)
+		return;
+	
+	edge_serial = (struct edgeport_serial *)serial->private;
+	edge_port = (struct edgeport_port *)port->private;
+	if ((edge_serial == NULL) || (edge_port == NULL))
+		return;
+	
+	if (serial->dev) {
+		/* The bulkreadcompletion routine will check 
+		 * this flag and dump add read data */
+		edge_port->close_pending = 1;
+
+		/* chase the port close */
+		TIChasePort (edge_port);
+
+		usb_unlink_urb (port->read_urb);
+
+		/* assuming we can still talk to the device,
+		 * send a close port command to it */
+		dbg("%s - send umpc_close_port", __FUNCTION__);
+		port_number = port->number - port->serial->minor;
+		status = TIWriteCommandSync (port->serial->dev,
+					     UMPC_CLOSE_PORT,
+					     (__u8)(UMPM_UART1_PORT + port_number),
+					     0,
+					     NULL,
+					     0);
+		--edge_port->edge_serial->num_ports_open;
+		if (edge_port->edge_serial->num_ports_open <= 0) {
+			/* last port is now closed, let's shut down our interrupt urb */
+			usb_unlink_urb (serial->port[0].interrupt_in_urb);
+			edge_port->edge_serial->num_ports_open = 0;
+		}
+	edge_port->close_pending = 0;
+	}
+
+	dbg("%s - exited", __FUNCTION__);
+}
+
+static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *data, int count)
+{
+	struct usb_serial *serial = port->serial;
+	struct edgeport_port *edge_port = port->private;
+	int result;
+
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	if (count == 0) {
+		dbg("%s - write request of 0 bytes", __FUNCTION__);
+		return 0;
+	}
+
+	if (edge_port == NULL)
+		return -ENODEV;
+	if (edge_port->close_pending == 1)
+		return -ENODEV;
+	
+	if (port->write_urb->status == -EINPROGRESS) {
+		dbg ("%s - already writing", __FUNCTION__);
+		return 0;
+	}
+
+	count = min (count, port->bulk_out_size);
+
+	if (from_user) {
+		if (copy_from_user(port->write_urb->transfer_buffer, data, count))
+			return -EFAULT;
+	} else {
+		memcpy (port->write_urb->transfer_buffer, data, count);
+	}
+
+	usb_serial_debug_data (__FILE__, __FUNCTION__, count, port->write_urb->transfer_buffer);
+
+	/* set up our urb */
+	usb_fill_bulk_urb (port->write_urb, serial->dev,
+			   usb_sndbulkpipe (serial->dev,
+					    port->bulk_out_endpointAddress),
+			   port->write_urb->transfer_buffer, count,
+			   edge_bulk_out_callback,
+			   port);
+
+	/* send the data out the bulk port */
+	result = usb_submit_urb(port->write_urb);
+	if (result)
+		err("%s - failed submitting write urb, error %d", __FUNCTION__, result);
+	else
+		result = count;
+
+	if (result > 0)
+		edge_port->icount.tx += count;
+
+	return result;
+}
+
+static int edge_write_room (struct usb_serial_port *port)
+{
+	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
+	int room = 0;
+
+	dbg("%s", __FUNCTION__);
+
+	if (edge_port == NULL)
+		return -ENODEV;
+	if (edge_port->close_pending == 1)
+		return -ENODEV;
+	
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	if (port->write_urb->status != -EINPROGRESS)
+		room = port->bulk_out_size;
+
+	dbg("%s - returns %d", __FUNCTION__, room);
+	return room;
+}
+
+static int edge_chars_in_buffer (struct usb_serial_port *port)
+{
+	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
+	int chars = 0;
+
+	dbg("%s", __FUNCTION__);
+
+	if (edge_port == NULL)
+		return -ENODEV;
+	if (edge_port->close_pending == 1)
+		return -ENODEV;
+
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	if (port->write_urb->status == -EINPROGRESS)
+		chars = port->write_urb->transfer_buffer_length;
+
+	dbg ("%s - returns %d", __FUNCTION__, chars);
+	return chars;
+}
+
+static void edge_throttle (struct usb_serial_port *port)
+{
+	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
+	struct tty_struct *tty;
+	int status;
+
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	if (edge_port == NULL)
+		return;
+
+	tty = port->tty;
+	if (!tty) {
+		dbg ("%s - no tty available", __FUNCTION__);
+		return;
+	}
+	/* if we are implementing XON/XOFF, send the stop character */
+	if (I_IXOFF(tty)) {
+		unsigned char stop_char = STOP_CHAR(tty);
+		status = edge_write (port, 0, &stop_char, 1);
+		if (status <= 0) {
+			return;
+		}
+	}
+
+	/* if we are implementing RTS/CTS, toggle that line */
+	if (tty->termios->c_cflag & CRTSCTS) {
+		status = TIClearRts (edge_port);
+	}
+
+	usb_unlink_urb (port->read_urb);
+}
+
+static void edge_unthrottle (struct usb_serial_port *port)
+{
+	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
+	struct tty_struct *tty;
+	int status;
+
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	if (edge_port == NULL)
+		return;
+
+	tty = port->tty;
+	if (!tty) {
+		dbg ("%s - no tty available", __FUNCTION__);
+		return;
+	}
+
+	/* if we are implementing XON/XOFF, send the start character */
+	if (I_IXOFF(tty)) {
+		unsigned char start_char = START_CHAR(tty);
+		status = edge_write (port, 0, &start_char, 1);
+		if (status <= 0) {
+			return;
+		}
+	}
+
+	/* if we are implementing RTS/CTS, toggle that line */
+	if (tty->termios->c_cflag & CRTSCTS) {
+		status = TISetRts (edge_port);
+	}
+
+	port->read_urb->dev = port->serial->dev;
+	status = usb_submit_urb (port->read_urb);
+	if (status) {
+		err ("%s - usb_submit_urb failed with value %d", __FUNCTION__, status);
+	}
+}
+
+
+static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
+{
+	struct ump_uart_config *config;
+	struct tty_struct *tty;
+	int baud;
+	int round;
+	unsigned cflag;
+	int status;
+	int port_number = edge_port->port->number - edge_port->port->serial->minor;
+
+	dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
+
+	tty = edge_port->port->tty;
+	if ((!tty) ||
+	    (!tty->termios)) {
+		dbg("%s - no tty structures", __FUNCTION__);
+		return;
+	}
+
+	config = kmalloc (sizeof (*config), GFP_KERNEL);
+	if (!config) {
+		err ("%s - out of memory", __FUNCTION__);
+		return;
+	}
+
+	cflag = tty->termios->c_cflag;
+
+	config->wFlags = 0;
+
+	/* These flags must be set */
+	config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
+	config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
+	config->bUartMode = 0;
+
+	switch (cflag & CSIZE) {
+		case CS5:
+			    config->bDataBits = UMP_UART_CHAR5BITS;
+			    dbg ("%s - data bits = 5", __FUNCTION__);
+			    break;
+		case CS6:
+			    config->bDataBits = UMP_UART_CHAR6BITS;
+			    dbg ("%s - data bits = 6", __FUNCTION__);
+			    break;
+		case CS7:
+			    config->bDataBits = UMP_UART_CHAR7BITS;
+			    dbg ("%s - data bits = 7", __FUNCTION__);
+			    break;
+		default:
+		case CS8:
+			    config->bDataBits = UMP_UART_CHAR8BITS;
+			    dbg ("%s - data bits = 8", __FUNCTION__);
+			    break;
+	}
+
+	if (cflag & PARENB) {
+		if (cflag & PARODD) {
+			config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
+			config->bParity = UMP_UART_ODDPARITY;
+			dbg("%s - parity = odd", __FUNCTION__);
+		} else {
+			config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
+			config->bParity = UMP_UART_EVENPARITY;
+			dbg("%s - parity = even", __FUNCTION__);
+		}
+	} else {
+		config->bParity = UMP_UART_NOPARITY; 	
+		dbg("%s - parity = none", __FUNCTION__);
+	}
+
+	if (cflag & CSTOPB) {
+		config->bStopBits = UMP_UART_STOPBIT2;
+		dbg("%s - stop bits = 2", __FUNCTION__);
+	} else {
+		config->bStopBits = UMP_UART_STOPBIT1;
+		dbg("%s - stop bits = 1", __FUNCTION__);
+	}
+
+	/* figure out the flow control settings */
+	if (cflag & CRTSCTS) {
+		config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
+		config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
+		dbg("%s - RTS/CTS is enabled", __FUNCTION__);
+	} else {
+		dbg("%s - RTS/CTS is disabled", __FUNCTION__);
+	}
+
+	/* if we are implementing XON/XOFF, set the start and stop character in the device */
+	if (I_IXOFF(tty) || I_IXON(tty)) {
+		config->cXon  = START_CHAR(tty);
+		config->cXoff = STOP_CHAR(tty);
+
+		/* if we are implementing INBOUND XON/XOFF */
+		if (I_IXOFF(tty)) {
+			config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
+			dbg ("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
+			     __FUNCTION__, config->cXon, config->cXoff);
+		} else {
+			dbg ("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
+		}
+
+		/* if we are implementing OUTBOUND XON/XOFF */
+		if (I_IXON(tty)) {
+			config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
+			dbg ("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
+			     __FUNCTION__, config->cXon, config->cXoff);
+		} else {
+			dbg ("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
+		}
+	}
+
+	/* Round the baud rate */
+	baud = tty_get_baud_rate(tty);
+	if (!baud) {
+		/* pick a default, any default... */
+		baud = 9600;
+	}
+	config->wBaudRate = (__u16)(461550L / baud);
+	round = 4615500L / baud;
+	if ((round - (config->wBaudRate * 10)) >= 5)
+		config->wBaudRate++;
+
+	dbg ("%s - baud rate = %d, wBaudRate = %d", __FUNCTION__, baud, config->wBaudRate);
+
+	dbg ("wBaudRate:   %d", (int)(461550L / config->wBaudRate));
+	dbg ("wFlags:    0x%x", config->wFlags);
+	dbg ("bDataBits:   %d", config->bDataBits);
+	dbg ("bParity:     %d", config->bParity);
+	dbg ("bStopBits:   %d", config->bStopBits);
+	dbg ("cXon:        %d", config->cXon);
+	dbg ("cXoff:       %d", config->cXoff);
+	dbg ("bUartMode:   %d", config->bUartMode);
+
+	/* move the word values into big endian mode */
+	cpu_to_be16s (&config->wFlags);
+	cpu_to_be16s (&config->wBaudRate);
+
+	status = TIWriteCommandSync (edge_port->port->serial->dev,
+				UMPC_SET_CONFIG,
+				(__u8)(UMPM_UART1_PORT + port_number),
+				0,
+				(__u8 *)config,
+				sizeof(*config));
+	if (status) {
+		dbg ("%s - error %d when trying to write config to device",
+		     __FUNCTION__, status);
+	}
+
+	kfree (config);
+	
+	return;
+}
+
+static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios)
+{
+	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
+	struct tty_struct *tty = port->tty;
+	unsigned int cflag;
+
+	if (!port->tty || !port->tty->termios) {
+		dbg ("%s - no tty or termios", __FUNCTION__);
+		return;
+	}
+
+	cflag = tty->termios->c_cflag;
+	/* check that they really want us to change something */
+	if (old_termios) {
+		if ((cflag == old_termios->c_cflag) &&
+		    (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
+			dbg ("%s - nothing to change", __FUNCTION__);
+			return;
+		}
+	}
+
+	dbg("%s - clfag %08x iflag %08x", __FUNCTION__, 
+	    tty->termios->c_cflag,
+	    RELEVANT_IFLAG(tty->termios->c_iflag));
+	if (old_termios) {
+		dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
+		    old_termios->c_cflag,
+		    RELEVANT_IFLAG(old_termios->c_iflag));
+	}
+
+	dbg("%s - port %d", __FUNCTION__, port->number);
+
+	if (edge_port == NULL)
+		return;
+
+	/* change the port settings to the new ones specified */
+	change_port_settings (edge_port, old_termios);
+
+	return;
+}
+
+static int set_modem_info (struct edgeport_port *edge_port, unsigned int cmd, unsigned int *value)
+{
+	unsigned int mcr = edge_port->shadow_mcr;
+	unsigned int arg;
+
+	if (copy_from_user(&arg, value, sizeof(int)))
+		return -EFAULT;
+
+	switch (cmd) {
+		case TIOCMBIS:
+			if (arg & TIOCM_RTS)
+				mcr |= MCR_RTS;
+			if (arg & TIOCM_DTR)
+				mcr |= MCR_RTS;
+			if (arg & TIOCM_LOOP)
+				mcr |= MCR_LOOPBACK;
+			break;
+
+		case TIOCMBIC:
+			if (arg & TIOCM_RTS)
+				mcr &= ~MCR_RTS;
+			if (arg & TIOCM_DTR)
+				mcr &= ~MCR_RTS;
+			if (arg & TIOCM_LOOP)
+				mcr &= ~MCR_LOOPBACK;
+			break;
+
+		case TIOCMSET:
+			/* turn off the RTS and DTR and LOOPBACK 
+			 * and then only turn on what was asked to */
+			mcr &=  ~(MCR_RTS | MCR_DTR | MCR_LOOPBACK);
+			mcr |= ((arg & TIOCM_RTS) ? MCR_RTS : 0);
+			mcr |= ((arg & TIOCM_DTR) ? MCR_DTR : 0);
+			mcr |= ((arg & TIOCM_LOOP) ? MCR_LOOPBACK : 0);
+			break;
+	}
+
+	edge_port->shadow_mcr = mcr;
+
+	TIRestoreMCR (edge_port, mcr);
+
+	return 0;
+}
+
+static int get_modem_info (struct edgeport_port *edge_port, unsigned int *value)
+{
+	unsigned int result = 0;
+	unsigned int msr = edge_port->shadow_msr;
+	unsigned int mcr = edge_port->shadow_mcr;
+
+	result = ((mcr & MCR_DTR)	? TIOCM_DTR: 0)	  /* 0x002 */
+		  | ((mcr & MCR_RTS)	? TIOCM_RTS: 0)   /* 0x004 */
+		  | ((msr & MSR_CTS)	? TIOCM_CTS: 0)   /* 0x020 */
+		  | ((msr & MSR_CD)	? TIOCM_CAR: 0)   /* 0x040 */
+		  | ((msr & MSR_RI)	? TIOCM_RI:  0)   /* 0x080 */
+		  | ((msr & MSR_DSR)	? TIOCM_DSR: 0);  /* 0x100 */
+
+
+	dbg("%s -- %x", __FUNCTION__, result);
+
+	if (copy_to_user(value, &result, sizeof(int)))
+		return -EFAULT;
+	return 0;
+}
+
+static int get_serial_info (struct edgeport_port *edge_port, struct serial_struct * retinfo)
+{
+	struct serial_struct tmp;
+
+	if (!retinfo)
+		return -EFAULT;
+
+	memset(&tmp, 0, sizeof(tmp));
+
+	tmp.type		= PORT_16550A;
+	tmp.line		= edge_port->port->serial->minor;
+	tmp.port		= edge_port->port->number;
+	tmp.irq			= 0;
+	tmp.flags		= ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
+	tmp.xmit_fifo_size	= edge_port->port->bulk_out_size;
+	tmp.baud_base		= 9600;
+	tmp.close_delay		= 5*HZ;
+	tmp.closing_wait	= 30*HZ;
+//	tmp.custom_divisor	= state->custom_divisor;
+//	tmp.hub6		= state->hub6;
+//	tmp.io_type		= state->io_type;
+
+
+	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+		return -EFAULT;
+	return 0;
+}
+
+static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
+	struct async_icount cnow;
+	struct async_icount cprev;
+
+	dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
+
+	switch (cmd) {
+		case TIOCINQ:
+			dbg("%s - (%d) TIOCINQ", __FUNCTION__, port->number);
+//			return get_number_bytes_avail(edge_port, (unsigned int *) arg);
+			break;
+
+		case TIOCSERGETLSR:
+			dbg("%s - (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
+//			return get_lsr_info(edge_port, (unsigned int *) arg);
+			break;
+
+		case TIOCMBIS:
+		case TIOCMBIC:
+		case TIOCMSET:
+			dbg("%s - (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __FUNCTION__, port->number);
+			return set_modem_info(edge_port, cmd, (unsigned int *) arg);
+			break;
+
+		case TIOCMGET:  
+			dbg("%s - (%d) TIOCMGET", __FUNCTION__, port->number);
+			return get_modem_info(edge_port, (unsigned int *) arg);
+			break;
+
+		case TIOCGSERIAL:
+			dbg("%s - (%d) TIOCGSERIAL", __FUNCTION__, port->number);
+			return get_serial_info(edge_port, (struct serial_struct *) arg);
+			break;
+
+		case TIOCSSERIAL:
+			dbg("%s - (%d) TIOCSSERIAL", __FUNCTION__, port->number);
+			break;
+
+		case TIOCMIWAIT:
+			dbg("%s - (%d) TIOCMIWAIT", __FUNCTION__, port->number);
+			cprev = edge_port->icount;
+			while (1) {
+				interruptible_sleep_on(&edge_port->delta_msr_wait);
+				/* see if a signal did it */
+				if (signal_pending(current))
+					return -ERESTARTSYS;
+				cnow = edge_port->icount;
+				if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
+				    cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
+					return -EIO; /* no change => error */
+				if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
+				    ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
+				    ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
+				    ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
+					return 0;
+				}
+				cprev = cnow;
+			}
+			/* not reached */
+			break;
+
+		case TIOCGICOUNT:
+			dbg ("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__,
+			     port->number, edge_port->icount.rx, edge_port->icount.tx);
+			if (copy_to_user((void *)arg, &edge_port->icount, sizeof(edge_port->icount)))
+				return -EFAULT;
+			return 0;
+	}
+
+	return -ENOIOCTLCMD;
+}
+
+static void edge_break (struct usb_serial_port *port, int break_state)
+{
+	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
+	int status;
+
+	dbg ("%s - state = %d", __FUNCTION__, break_state);
+
+	/* chase the port close */
+	TIChasePort (edge_port);
+
+	if (break_state == -1) {
+		status = TISetBreak (edge_port);
+	} else {
+		status = TIClearBreak (edge_port);
+	}
+	if (status) {
+		dbg ("%s - error %d sending break set/clear command.",
+		     __FUNCTION__, status);
+	}
+}
+
+static int edge_startup (struct usb_serial *serial)
+{
+	struct edgeport_serial *edge_serial;
+	struct edgeport_port *edge_port;
+	struct usb_device *dev;
+	int status;
+	int i;
+
+	dev = serial->dev;
+
+	/* create our private serial structure */
+	edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
+	if (edge_serial == NULL) {
+		err("%s - Out of memory", __FUNCTION__);
+		return -ENOMEM;
+	}
+	memset (edge_serial, 0, sizeof(struct edgeport_serial));
+	edge_serial->serial = serial;
+	serial->private = edge_serial;
+
+	status = TIDownloadFirmware (edge_serial);
+	if (status) {
+		kfree (edge_serial);
+		return status;
+	}
+
+	/* set up our port private structures */
+	for (i = 0; i < serial->num_ports; ++i) {
+		edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
+		if (edge_port == NULL) {
+			err("%s - Out of memory", __FUNCTION__);
+			return -ENOMEM;
+		}
+		memset (edge_port, 0, sizeof(struct edgeport_port));
+		edge_port->port = &serial->port[i];
+		edge_port->edge_serial = edge_serial;
+		serial->port[i].private = edge_port;
+	}
+	
+	return 0;
+}
+
+static void edge_shutdown (struct usb_serial *serial)
+{
+	int i;
+
+	dbg ("%s", __FUNCTION__);
+
+	for (i=0; i < serial->num_ports; ++i) {
+		kfree (serial->port[i].private);
+		serial->port[i].private = NULL;
+	}
+	kfree (serial->private);
+	serial->private = NULL;
+}
+
+
+static struct usb_serial_device_type edgeport_1port_device = {
+	owner:			THIS_MODULE,
+	name:			"Edgeport TI 1 port adapter",
+	id_table:		edgeport_1port_id_table,
+	num_interrupt_in:	1,
+	num_bulk_in:		1,
+	num_bulk_out:		1,
+	num_ports:		1,
+	open:			edge_open,
+	close:			edge_close,
+	throttle:		edge_throttle,
+	unthrottle:		edge_unthrottle,
+	startup:		edge_startup,
+	shutdown:		edge_shutdown,
+	ioctl:			edge_ioctl,
+	set_termios:		edge_set_termios,
+	write:			edge_write,
+	write_room:		edge_write_room,
+	chars_in_buffer:	edge_chars_in_buffer,
+	break_ctl:		edge_break,
+};
+
+static struct usb_serial_device_type edgeport_2port_device = {
+	owner:			THIS_MODULE,
+	name:			"Edgeport TI 2 port adapter",
+	id_table:		edgeport_2port_id_table,
+	num_interrupt_in:	1,
+	num_bulk_in:		2,
+	num_bulk_out:		2,
+	num_ports:		2,
+	open:			edge_open,
+	close:			edge_close,
+	throttle:		edge_throttle,
+	unthrottle:		edge_unthrottle,
+	startup:		edge_startup,
+	shutdown:		edge_shutdown,
+	ioctl:			edge_ioctl,
+	set_termios:		edge_set_termios,
+	write:			edge_write,
+	write_room:		edge_write_room,
+	chars_in_buffer:	edge_chars_in_buffer,
+	break_ctl:		edge_break,
+};
+
+
+static int __init edgeport_init(void)
+{
+	usb_serial_register (&edgeport_1port_device);
+	usb_serial_register (&edgeport_2port_device);
+	info(DRIVER_DESC " " DRIVER_VERSION);
+	return 0;
+}
+
+static void __exit edgeport_exit (void)
+{
+	usb_serial_deregister (&edgeport_1port_device);
+	usb_serial_deregister (&edgeport_2port_device);
+}
+
+module_init(edgeport_init);
+module_exit(edgeport_exit);
+
+/* Module information */
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+MODULE_PARM(debug, "i");
+MODULE_PARM_DESC(debug, "Debug enabled or not");
+
+MODULE_PARM(ignore_cpu_rev, "i");
+MODULE_PARM_DESC(ignore_cpu_rev, "Ignore the cpu revision when connecting to a device");
+

FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)