/*
* 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/jiffies.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_2C) },
{ 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 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_2C) },
{ 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 usb_driver io_driver = {
.owner = THIS_MODULE,
.name = "io_ti",
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
.id_table = 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
* @start_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
*/
static 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;
}
static 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) {
dev_err (&port->port->dev, "%s - out of memory\n", __FUNCTION__);
return -ENOMEM;
}
lsr = kmalloc (1, GFP_KERNEL); /* Sigh, that's right, just one byte,
as not all platforms can do DMA
from stack */
if (!lsr) {
kfree(oedb);
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 );
kfree(lsr);
kfree(oedb);
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 */
msleep(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 */
msleep(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->desc.bNumInterfaces);
dbg ("%s - MAX Power = %d", __FUNCTION__, dev->config->desc.bMaxPower*2);
if (dev->config->desc.bNumInterfaces != 1) {
dev_err (&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __FUNCTION__);
return -ENODEV;
}
return 0;
}
static 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;
}
static 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)
{
struct device *dev = &serial->serial->dev->dev;
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) {
dev_err (dev, "%s - out of memory\n", __FUNCTION__);
return -ENOMEM;
}
buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL);
if (!buffer) {
dev_err (dev, "%s - out of memory when allocating buffer\n", __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) {
dev_err (dev, "%s - invalid buffer signature\n", __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) {
dev_err (&serial->serial->dev->dev, "%s - out of memory\n", __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, struct device *dev)
{
__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) {
dev_err (dev, "%s - out of memory\n", __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)
{
struct device *dev = &serial->serial->dev->dev;
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->interface->cur_altsetting->desc;
if (!interface) {
dev_err (&serial->serial->dev->dev, "%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) {
dev_err (dev, "%s - out of memory.\n", __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) {
dev_err (dev, "%s - out of memory.\n", __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) {
dev_err (dev, "%s - out of memory.\n", __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) {
dev_err (dev, "%s - error resetting device\n", __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. */
kfree (firmware_version);
kfree (rom_desc);
kfree (ti_manuf_desc);
return -ENODEV;
}
kfree (firmware_version);
}
// 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) {
dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
kfree (rom_desc);
kfree (ti_manuf_desc);
return -ENOMEM;
}
vheader = kmalloc (HEADER_SIZE, GFP_KERNEL);
if (!vheader) {
dev_err (dev, "%s - out of memory.\n", __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, dev);
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) {
dev_err (dev, "%s - out of memory.\n", __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) {
dev_err (dev, "%s - out of memory\n", __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 & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
icount = &edge_port->icount;
/* update input line counters */
if (msr & EDGEPORT_MSR_DELTA_CTS)
icount->cts++;
if (msr & EDGEPORT_MSR_DELTA_DSR)
icount->dsr++;
if (msr & EDGEPORT_MSR_DELTA_CD)
icount->dcd++;
if (msr & EDGEPORT_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 pt_regs *regs)
{
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;
int status;
__u8 lsr;
__u8 msr;
dbg("%s", __FUNCTION__);
switch (urb->status) {
case 0:
/* success */
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
return;
default:
dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
goto exit;
}
if (!length) {
dbg ("%s - no data in urb", __FUNCTION__);
goto exit;
}
usb_serial_debug_data (__FILE__, __FUNCTION__, length, data);
if (length != 2) {
dbg ("%s - expecting packet of size 2, got %d", __FUNCTION__, length);
goto exit;
}
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];
edge_port = usb_get_serial_port_data(port);
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:
dev_err (&urb->dev->dev, "%s - Unknown Interrupt code from UMP %x\n",
__FUNCTION__, data[1]);
break;
}
exit:
status = usb_submit_urb (urb, GFP_ATOMIC);
if (status)
dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
__FUNCTION__, status);
}
static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs)
{
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 (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 */
status = usb_submit_urb (urb, GFP_ATOMIC);
if (status)
dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
__FUNCTION__, status);
}
static void edge_bulk_out_callback (struct urb *urb, struct pt_regs *regs)
{
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
struct tty_struct *tty;
dbg ("%s - port %d", __FUNCTION__, port->number);
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 (port->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 = usb_get_serial_port_data(port);
struct edgeport_serial *edge_serial;
struct usb_device *dev;
struct urb *urb;
int port_number;
int status;
u16 open_settings;
u8 transaction_timeout;
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:
dev_err (&port->dev, "Unknown port number!!!\n");
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) {
/* 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) {
dev_err (&port->dev, "%s - no interrupt urb present, exiting\n", __FUNCTION__);
return -EINVAL;
}
urb->complete = edge_interrupt_callback;
urb->context = edge_serial;
urb->dev = dev;
status = usb_submit_urb (urb, GFP_KERNEL);
if (status) {
dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __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) {
dev_err (&port->dev, "%s - no read urb present, exiting\n", __FUNCTION__);
return -EINVAL;
}
urb->complete = edge_bulk_in_callback;
urb->context = edge_port;
urb->dev = dev;
status = usb_submit_urb (urb, GFP_KERNEL);
if (status) {
dev_err (&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __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 edgeport_serial *edge_serial;
struct edgeport_port *edge_port;
int port_number;
int status;
dbg("%s - port %d", __FUNCTION__, port->number);
edge_serial = usb_get_serial_data(port->serial);
edge_port = usb_get_serial_port_data(port);
if ((edge_serial == NULL) || (edge_port == NULL))
return;
/* 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 (port->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 edgeport_port *edge_port = usb_get_serial_port_data(port);
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, port->serial->dev,
usb_sndbulkpipe (port->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, GFP_ATOMIC);
if (result)
dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __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 = usb_get_serial_port_data(port);
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 = usb_get_serial_port_data(port);
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 = usb_get_serial_port_data(port);
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 = usb_get_serial_port_data(port);
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, GFP_ATOMIC);
if (status) {
dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __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) {
dev_err (&edge_port->port->dev, "%s - out of memory\n", __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 = usb_get_serial_port_data(port);
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 edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
{
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
unsigned int mcr;
dbg("%s - port %d", __FUNCTION__, port->number);
mcr = edge_port->shadow_mcr;
if (set & TIOCM_RTS)
mcr |= MCR_RTS;
if (set & TIOCM_DTR)
mcr |= MCR_DTR;
if (set & TIOCM_LOOP)
mcr |= MCR_LOOPBACK;
if (clear & TIOCM_RTS)
mcr &= ~MCR_RTS;
if (clear & TIOCM_DTR)
mcr &= ~MCR_DTR;
if (clear & TIOCM_LOOP)
mcr &= ~MCR_LOOPBACK;
edge_port->shadow_mcr = mcr;
TIRestoreMCR (edge_port, mcr);
return 0;
}
static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
{
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
unsigned int result = 0;
unsigned int msr;
unsigned int mcr;
dbg("%s - port %d", __FUNCTION__, port->number);
msr = edge_port->shadow_msr;
mcr = edge_port->shadow_mcr;
result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
| ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
| ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
| ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
| ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
| ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
dbg("%s -- %x", __FUNCTION__, result);
return result;
}
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 = usb_get_serial_port_data(port);
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 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 = usb_get_serial_port_data(port);
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) {
dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
return -ENOMEM;
}
memset (edge_serial, 0, sizeof(struct edgeport_serial));
edge_serial->serial = serial;
usb_set_serial_data(serial, 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) {
dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
return -ENOMEM;
}
memset (edge_port, 0, sizeof(struct edgeport_port));
edge_port->port = serial->port[i];
edge_port->edge_serial = edge_serial;
usb_set_serial_port_data(serial->port[i], 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 (usb_get_serial_port_data(serial->port[i]));
usb_set_serial_port_data(serial->port[i], NULL);
}
kfree (usb_get_serial_data(serial));
usb_set_serial_data(serial, NULL);
}
static struct usb_serial_device_type edgeport_1port_device = {
.owner = THIS_MODULE,
.name = "Edgeport TI 1 port adapter",
.short_name = "edgeport_ti_1",
.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,
.attach = edge_startup,
.shutdown = edge_shutdown,
.ioctl = edge_ioctl,
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
.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",
.short_name = "edgeport_ti_2",
.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,
.attach = edge_startup,
.shutdown = edge_shutdown,
.ioctl = edge_ioctl,
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
.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)
{
int retval;
retval = usb_serial_register(&edgeport_1port_device);
if (retval)
goto failed_1port_device_register;
retval = usb_serial_register(&edgeport_2port_device);
if (retval)
goto failed_2port_device_register;
retval = usb_register(&io_driver);
if (retval)
goto failed_usb_register;
info(DRIVER_DESC " " DRIVER_VERSION);
return 0;
failed_usb_register:
usb_serial_deregister(&edgeport_2port_device);
failed_2port_device_register:
usb_serial_deregister(&edgeport_1port_device);
failed_1port_device_register:
return retval;
}
static void __exit edgeport_exit (void)
{
usb_deregister (&io_driver);
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");
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