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/*
* Edgeport USB Serial Converter driver
*
* Copyright(c) 2000 Inside Out Networks, All rights reserved.
* Copyright(c) 2001 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:
* Edgeport/4
* Edgeport/4t
* Edgeport/2
* Edgeport/4i
* Edgeport/2i
* Edgeport/421
* Edgeport/21
* Rapidport/4
* Edgeport/8
* Edgeport/2D8
* Edgeport/4D8
* Edgeport/8i
*
* Version history:
*
* 2.2 2001_11_14 greg kroah-hartman
* - fixed bug in edge_close that kept the port from being used more
* than once.
* - fixed memory leak on device removal.
* - fixed potential double free of memory when command urb submitting
* failed.
* - other small cleanups when the device is removed
*
* 2.1 2001_07_09 greg kroah-hartman
* - added support for TIOCMBIS and TIOCMBIC.
*
* (04/08/2001) gb
* - Identify version on module load.
*
* 2.0 2001_03_05 greg kroah-hartman
* - reworked entire driver to fit properly in with the other usb-serial
* drivers. Occasional oopses still happen, but it's a good start.
*
* 1.2.3 (02/23/2001) greg kroah-hartman
* - changed device table to work properly for 2.4.x final format.
* - fixed problem with dropping data at high data rates.
*
* 1.2.2 (11/27/2000) greg kroah-hartman
* - cleaned up more NTisms.
* - Added device table for 2.4.0-test11
*
* 1.2.1 (11/08/2000) greg kroah-hartman
* - Started to clean up NTisms.
* - Fixed problem with dev field of urb for kernels >= 2.4.0-test9
*
* 1.2 (10/17/2000) David Iacovelli
* Remove all EPIC code and GPL source
* Fix RELEVANT_IFLAG macro to include flow control
* changes port configuration changes.
* Fix redefinition of SERIAL_MAGIC
* Change all timeout values to 5 seconds
* Tried to fix the UHCI multiple urb submission, but failed miserably.
* it seems to work fine with OHCI.
* ( Greg take a look at the #if 0 at end of WriteCmdUsb() we must
* find a way to work arount this UHCI bug )
*
* 1.1 (10/11/2000) David Iacovelli
* Fix XON/XOFF flow control to support both IXON and IXOFF
*
* 0.9.27 (06/30/2000) David Iacovelli
* Added transmit queue and now allocate urb for command writes.
*
* 0.9.26 (06/29/2000) David Iacovelli
* Add support for 80251 based edgeport
*
* 0.9.25 (06/27/2000) David Iacovelli
* Do not close the port if it has multiple opens.
*
* 0.9.24 (05/26/2000) David Iacovelli
* Add IOCTLs to support RXTX and JAVA POS
* and first cut at running BlackBox Demo
*
* 0.9.23 (05/24/2000) David Iacovelli
* Add IOCTLs to support RXTX and JAVA POS
*
* 0.9.22 (05/23/2000) David Iacovelli
* fixed bug in enumeration. If epconfig turns on mapping by
* path after a device is already plugged in, we now update
* the mapping correctly
*
* 0.9.21 (05/16/2000) David Iacovelli
* Added BlockUntilChaseResp() to also wait for txcredits
* Updated the way we allocate and handle write URBs
* Add debug code to dump buffers
*
* 0.9.20 (05/01/2000) David Iacovelli
* change driver to use usb/tts/
*
* 0.9.19 (05/01/2000) David Iacovelli
* Update code to compile if DEBUG is off
*
* 0.9.18 (04/28/2000) David Iacovelli
* cleanup and test tty_register with devfs
*
* 0.9.17 (04/27/2000) greg kroah-hartman
* changed tty_register around to be like the way it
* was before, but now it works properly with devfs.
*
* 0.9.16 (04/26/2000) david iacovelli
* Fixed bug in GetProductInfo()
*
* 0.9.15 (04/25/2000) david iacovelli
* Updated enumeration
*
* 0.9.14 (04/24/2000) david iacovelli
* Removed all config/status IOCTLS and
* converted to using /proc/edgeport
* still playing with devfs
*
* 0.9.13 (04/24/2000) david iacovelli
* Removed configuration based on ttyUSB0
* Added support for configuration using /prod/edgeport
* first attempt at using devfs (not working yet!)
* Added IOCTL to GetProductInfo()
* Added support for custom baud rates
* Add support for random port numbers
*
* 0.9.12 (04/18/2000) david iacovelli
* added additional configuration IOCTLs
* use ttyUSB0 for configuration
*
* 0.9.11 (04/17/2000) greg kroah-hartman
* fixed module initialization race conditions.
* made all urbs dynamically allocated.
* made driver devfs compatible. now it only registers the tty device
* when the device is actually plugged in.
*
* 0.9.10 (04/13/2000) greg kroah-hartman
* added proc interface framework.
*
* 0.9.9 (04/13/2000) david iacovelli
* added enumeration code and ioctls to configure the device
*
* 0.9.8 (04/12/2000) david iacovelli
* Change interrupt read start when device is plugged in
* and stop when device is removed
* process interrupt reads when all ports are closed
* (keep value of rxBytesAvail consistent with the edgeport)
* set the USB_BULK_QUEUE flag so that we can shove a bunch
* of urbs at once down the pipe
*
* 0.9.7 (04/10/2000) david iacovelli
* start to add enumeration code.
* generate serial number for epic devices
* add support for kdb
*
* 0.9.6 (03/30/2000) david iacovelli
* add IOCTL to get string, manufacture, and boot descriptors
*
* 0.9.5 (03/14/2000) greg kroah-hartman
* more error checking added to SerialOpen to try to fix UHCI open problem
*
* 0.9.4 (03/09/2000) greg kroah-hartman
* added more error checking to handle oops when data is hanging
* around and tty is abruptly closed.
*
* 0.9.3 (03/09/2000) david iacovelli
* Add epic support for xon/xoff chars
* play with performance
*
* 0.9.2 (03/08/2000) greg kroah-hartman
* changed most "info" calls to "dbg"
* implemented flow control properly in the termios call
*
* 0.9.1 (03/08/2000) david iacovelli
* added EPIC support
* enabled bootloader update
*
* 0.9 (03/08/2000) greg kroah-hartman
* Release to IO networks.
* Integrated changes that David made
* made getting urbs for writing SMP safe
*
* 0.8 (03/07/2000) greg kroah-hartman
* Release to IO networks.
* Fixed problems that were seen in code by David.
* Now both Edgeport/4 and Edgeport/2 works properly.
* Changed most of the functions to use port instead of serial.
*
* 0.7 (02/27/2000) greg kroah-hartman
* Milestone 3 release.
* Release to IO Networks
* ioctl for waiting on line change implemented.
* ioctl for getting statistics implemented.
* multiport support working.
* lsr and msr registers are now handled properly.
* change break now hooked up and working.
* support for all known Edgeport devices.
*
* 0.6 (02/22/2000) greg kroah-hartman
* Release to IO networks.
* CHASE is implemented correctly when port is closed.
* SerialOpen now blocks correctly until port is fully opened.
*
* 0.5 (02/20/2000) greg kroah-hartman
* Release to IO networks.
* Known problems:
* modem status register changes are not sent on to the user
* CHASE is not implemented when the port is closed.
*
* 0.4 (02/16/2000) greg kroah-hartman
* Second cut at the CeBit demo.
* Doesn't leak memory on every write to the port
* Still small leaks on startup.
* Added support for Edgeport/2 and Edgeport/8
*
* 0.3 (02/15/2000) greg kroah-hartman
* CeBit demo release.
* Force the line settings to 4800, 8, 1, e for the demo.
* Warning! This version leaks memory like crazy!
*
* 0.2 (01/30/2000) greg kroah-hartman
* Milestone 1 release.
* Device is found by USB subsystem, enumerated, fimware is downloaded
* and the descriptors are printed to the debug log, config is set, and
* green light starts to blink. Open port works, and data can be sent
* and received at the default settings of the UART. Loopback connector
* and debug log confirms this.
*
* 0.1 (01/23/2000) greg kroah-hartman
* Initial release to help IO Networks try to set up their test system.
* Edgeport4 is recognized, firmware is downloaded, config is set so
* device blinks green light every 3 sec. Port is bound, but opening,
* closing, and sending data do not work properly.
*
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/errno.h>
#include <linux/poll.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/fcntl.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 <linux/proc_fs.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_edgeport.h"
#include "io_ionsp.h" /* info for the iosp messages */
#include "io_16654.h" /* 16654 UART defines */
/*
* Version Information
*/
#define DRIVER_VERSION "v2.2"
#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
#define DRIVER_DESC "Edgeport USB Serial Driver"
/* First, the latest boot code - for first generation edgeports */
#define IMAGE_ARRAY_NAME BootCodeImage_GEN1
#define IMAGE_VERSION_NAME BootCodeImageVersion_GEN1
#include "io_fw_boot.h" /* the bootloader firmware to download to a device, if it needs it */
/* for second generation edgeports */
#define IMAGE_ARRAY_NAME BootCodeImage_GEN2
#define IMAGE_VERSION_NAME BootCodeImageVersion_GEN2
#include "io_fw_boot2.h" /* the bootloader firmware to download to a device, if it needs it */
/* Then finally the main run-time operational code - for first generation edgeports */
#define IMAGE_ARRAY_NAME OperationalCodeImage_GEN1
#define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN1
#include "io_fw_down.h" /* Define array OperationalCodeImage[] */
/* for second generation edgeports */
#define IMAGE_ARRAY_NAME OperationalCodeImage_GEN2
#define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN2
#include "io_fw_down2.h" /* Define array OperationalCodeImage[] */
#define MAX_NAME_LEN 64
#define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
#define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
#define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
#ifndef SERIAL_MAGIC
#define SERIAL_MAGIC 0x6702
#endif
#define PORT_MAGIC 0x7301
/* receive port state */
enum RXSTATE {
EXPECT_HDR1 = 0, /* Expect header byte 1 */
EXPECT_HDR2 = 1, /* Expect header byte 2 */
EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
};
/* Transmit Fifo
* This Transmit queue is an extension of the edgeport Rx buffer.
* The maximum amount of data buffered in both the edgeport
* Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
*/
struct TxFifo {
unsigned int head; /* index to head pointer (write) */
unsigned int tail; /* index to tail pointer (read) */
unsigned int count; /* Bytes in queue */
unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
unsigned char *fifo; /* allocated Buffer */
};
/* This structure holds all of the local port information */
struct edgeport_port {
__u16 txCredits; /* our current credits for this port */
__u16 maxTxCredits; /* the max size of the port */
struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
struct urb *write_urb; /* write URB for this port */
char write_in_progress; /* TRUE while a write URB is outstanding */
__u8 shadowLCR; /* last LCR value received */
__u8 shadowMCR; /* last MCR value received */
__u8 shadowMSR; /* last MSR value received */
__u8 shadowLSR; /* last LSR value received */
__u8 shadowXonChar; /* last value set as XON char in Edgeport */
__u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
__u8 validDataMask;
__u32 baudRate;
char open;
char openPending;
char commandPending;
char closePending;
char chaseResponsePending;
wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */
struct async_icount icount;
struct usb_serial_port *port; /* loop back to the owner of this object */
};
/* This structure holds all of the individual device information */
struct edgeport_serial {
char name[MAX_NAME_LEN+1]; /* string name of this device */
EDGE_MANUF_DESCRIPTOR manuf_descriptor; /* the manufacturer descriptor */
EDGE_BOOT_DESCRIPTOR boot_descriptor; /* the boot firmware descriptor */
struct edgeport_product_info product_info; /* Product Info */
__u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
unsigned char * interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
struct urb * interrupt_read_urb; /* our interrupt urb */
__u8 bulk_in_endpoint; /* the bulk in endpoint handle */
unsigned char * bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
struct urb * read_urb; /* our bulk read urb */
__u8 bulk_out_endpoint; /* the bulk out endpoint handle */
__s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
enum RXSTATE rxState; /* the current state of the bulk receive processor */
__u8 rxHeader1; /* receive header byte 1 */
__u8 rxHeader2; /* receive header byte 2 */
__u8 rxHeader3; /* receive header byte 3 */
__u8 rxPort; /* the port that we are currently receiving data for */
__u8 rxStatusCode; /* the receive status code */
__u8 rxStatusParam; /* the receive status paramater */
__s16 rxBytesRemaining; /* the number of port bytes left to read */
struct usb_serial *serial; /* loop back to the owner of this object */
};
/* baud rate information */
typedef struct _DIVISOR_TABLE_ENTRY {
__u32 BaudRate;
__u16 Divisor;
} DIVISOR_TABLE_ENTRY, *PDIVISOR_TABLE_ENTRY;
//
// Define table of divisors for Rev A EdgePort/4 hardware
// These assume a 3.6864MHz crystal, the standard /16, and
// MCR.7 = 0.
//
static DIVISOR_TABLE_ENTRY DivisorTable[] = {
{ 75, 3072},
{ 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
{ 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
{ 150, 1536},
{ 300, 768},
{ 600, 384},
{ 1200, 192},
{ 1800, 128},
{ 2400, 96},
{ 4800, 48},
{ 7200, 32},
{ 9600, 24},
{ 14400, 16},
{ 19200, 12},
{ 38400, 6},
{ 57600, 4},
{ 115200, 2},
{ 230400, 1},
};
/* local variables */
static int CmdUrbs = 0; /* Number of outstanding Command Write Urbs */
/* local function prototypes */
/* function prototypes for all URB callbacks */
static void edge_interrupt_callback (struct urb *urb);
static void edge_bulk_in_callback (struct urb *urb);
static void edge_bulk_out_data_callback (struct urb *urb);
static void edge_bulk_out_cmd_callback (struct urb *urb);
/* function prototypes for the usbserial callbacks */
static int edge_open (struct usb_serial_port *port, struct file *filp);
static void edge_close (struct usb_serial_port *port, struct file *filp);
static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
static int edge_write_room (struct usb_serial_port *port);
static int edge_chars_in_buffer (struct usb_serial_port *port);
static void edge_throttle (struct usb_serial_port *port);
static void edge_unthrottle (struct usb_serial_port *port);
static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios);
static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg);
static void edge_break (struct usb_serial_port *port, int break_state);
static int edge_startup (struct usb_serial *serial);
static void edge_shutdown (struct usb_serial *serial);
#include "io_tables.h" /* all of the devices that this driver supports */
/* function prototypes for all of our local functions */
static int process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength);
static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3);
static void handle_new_msr (struct edgeport_port *edge_port, __u8 newMsr);
static void handle_new_lsr (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data);
static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param);
static int calc_baud_rate_divisor (int baud_rate, int *divisor);
static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate);
static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios);
static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue);
static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength);
static void send_more_port_data (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port);
static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
static void get_manufacturing_desc (struct edgeport_serial *edge_serial);
static void get_boot_desc (struct edgeport_serial *edge_serial);
static void load_application_firmware (struct edgeport_serial *edge_serial);
static void unicode_to_ascii (char *string, short *unicode, int unicode_size);
// ************************************************************************
// ************************************************************************
// ************************************************************************
// ************************************************************************
/************************************************************************
* *
* update_edgeport_E2PROM() Compare current versions of *
* Boot ROM and Manufacture *
* Descriptors with versions *
* embedded in this driver *
* *
************************************************************************/
static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial)
{
__u32 BootCurVer;
__u32 BootNewVer;
__u8 BootMajorVersion;
__u8 BootMinorVersion;
__u16 BootBuildNumber;
__u8 *BootImage;
__u32 BootSize;
PEDGE_FIRMWARE_IMAGE_RECORD record;
unsigned char *firmware;
int response;
switch (edge_serial->product_info.iDownloadFile) {
case EDGE_DOWNLOAD_FILE_I930:
BootMajorVersion = BootCodeImageVersion_GEN1.MajorVersion;
BootMinorVersion = BootCodeImageVersion_GEN1.MinorVersion;
BootBuildNumber = BootCodeImageVersion_GEN1.BuildNumber;
BootImage = &BootCodeImage_GEN1[0];
BootSize = sizeof( BootCodeImage_GEN1 );
break;
case EDGE_DOWNLOAD_FILE_80251:
BootMajorVersion = BootCodeImageVersion_GEN2.MajorVersion;
BootMinorVersion = BootCodeImageVersion_GEN2.MinorVersion;
BootBuildNumber = BootCodeImageVersion_GEN2.BuildNumber;
BootImage = &BootCodeImage_GEN2[0];
BootSize = sizeof( BootCodeImage_GEN2 );
break;
default:
return;
}
// Check Boot Image Version
BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
(edge_serial->boot_descriptor.MinorVersion << 16) +
edge_serial->boot_descriptor.BuildNumber;
BootNewVer = (BootMajorVersion << 24) +
(BootMinorVersion << 16) +
BootBuildNumber;
dbg("Current Boot Image version %d.%d.%d",
edge_serial->boot_descriptor.MajorVersion,
edge_serial->boot_descriptor.MinorVersion,
edge_serial->boot_descriptor.BuildNumber);
if (BootNewVer > BootCurVer) {
dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
edge_serial->boot_descriptor.MajorVersion,
edge_serial->boot_descriptor.MinorVersion,
edge_serial->boot_descriptor.BuildNumber,
BootMajorVersion,
BootMinorVersion,
BootBuildNumber);
dbg("Downloading new Boot Image");
firmware = BootImage;
for (;;) {
record = (PEDGE_FIRMWARE_IMAGE_RECORD)firmware;
response = rom_write (edge_serial->serial, record->ExtAddr, record->Addr, record->Len, &record->Data[0]);
if (response < 0) {
err("sram_write failed (%x, %x, %d)", record->ExtAddr, record->Addr, record->Len);
break;
}
firmware += sizeof (EDGE_FIRMWARE_IMAGE_RECORD) + record->Len;
if (firmware >= &BootImage[BootSize]) {
break;
}
}
} else {
dbg("Boot Image -- already up to date");
}
}
/************************************************************************
* *
* Get string descriptor from device *
* *
************************************************************************/
static int get_string (struct usb_device *dev, int Id, char *string)
{
struct usb_string_descriptor StringDesc;
struct usb_string_descriptor *pStringDesc;
dbg(__FUNCTION__ " - USB String ID = %d", Id );
if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
return 0;
}
pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
if (!pStringDesc) {
return 0;
}
if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
kfree(pStringDesc);
return 0;
}
unicode_to_ascii(string, pStringDesc->wData, pStringDesc->bLength/2-1);
kfree(pStringDesc);
return strlen(string);
}
#if 0
/************************************************************************
*
* Get string descriptor from device
*
************************************************************************/
static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc)
{
struct usb_string_descriptor StringDesc;
struct usb_string_descriptor *pStringDesc;
dbg(__FUNCTION__ " - USB String ID = %d", Id );
if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
return 0;
}
pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
if (!pStringDesc) {
return -1;
}
if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
kfree(pStringDesc);
return -1;
}
*pRetDesc = pStringDesc;
return 0;
}
#endif
static void get_product_info(struct edgeport_serial *edge_serial)
{
struct edgeport_product_info *product_info = &edge_serial->product_info;
memset (product_info, 0, sizeof(struct edgeport_product_info));
product_info->ProductId = (__u16)(edge_serial->serial->dev->descriptor.idProduct & ~ION_DEVICE_ID_GENERATION_2);
product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
product_info->ProdInfoVer = 0;
product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
product_info->BootMajorVersion = edge_serial->boot_descriptor.MajorVersion;
product_info->BootMinorVersion = edge_serial->boot_descriptor.MinorVersion;
product_info->BootBuildNumber = edge_serial->boot_descriptor.BuildNumber;
memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate));
// check if this is 2nd generation hardware
if (edge_serial->serial->dev->descriptor.idProduct & ION_DEVICE_ID_GENERATION_2) {
product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN2.MajorVersion;
product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN2.MinorVersion;
product_info->FirmwareBuildNumber = OperationalCodeImageVersion_GEN2.BuildNumber;
product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
} else {
product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN1.MajorVersion;
product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN1.MinorVersion;
product_info->FirmwareBuildNumber = OperationalCodeImageVersion_GEN1.BuildNumber;
product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
}
// Determine Product type and set appropriate flags
switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
case ION_DEVICE_ID_EDGEPORT_4T:
case ION_DEVICE_ID_EDGEPORT_4:
case ION_DEVICE_ID_EDGEPORT_2:
case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
case ION_DEVICE_ID_EDGEPORT_8:
case ION_DEVICE_ID_EDGEPORT_421:
case ION_DEVICE_ID_EDGEPORT_21:
case ION_DEVICE_ID_EDGEPORT_2_DIN:
case ION_DEVICE_ID_EDGEPORT_4_DIN:
case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
product_info->IsRS232 = 1;
break;
case ION_DEVICE_ID_EDGEPORT_2I: // Edgeport/2 RS422/RS485
product_info->IsRS422 = 1;
product_info->IsRS485 = 1;
break;
case ION_DEVICE_ID_EDGEPORT_8I: // Edgeport/4 RS422
case ION_DEVICE_ID_EDGEPORT_4I: // Edgeport/4 RS422
product_info->IsRS422 = 1;
break;
}
// Dump Product Info structure
dbg("**Product Information:");
dbg(" ProductId %x", product_info->ProductId );
dbg(" NumPorts %d", product_info->NumPorts );
dbg(" ProdInfoVer %d", product_info->ProdInfoVer );
dbg(" IsServer %d", product_info->IsServer);
dbg(" IsRS232 %d", product_info->IsRS232 );
dbg(" IsRS422 %d", product_info->IsRS422 );
dbg(" IsRS485 %d", product_info->IsRS485 );
dbg(" RomSize %d", product_info->RomSize );
dbg(" RamSize %d", product_info->RamSize );
dbg(" CpuRev %x", product_info->CpuRev );
dbg(" BoardRev %x", product_info->BoardRev);
dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion,
product_info->BootMinorVersion,
product_info->BootBuildNumber);
dbg(" FirmwareMajorVersion %d.%d.%d", product_info->FirmwareMajorVersion,
product_info->FirmwareMinorVersion,
product_info->FirmwareBuildNumber);
dbg(" ManufactureDescDate %d/%d/%d", product_info->ManufactureDescDate[0],
product_info->ManufactureDescDate[1],
product_info->ManufactureDescDate[2]+1900);
dbg(" iDownloadFile 0x%x", product_info->iDownloadFile);
}
/************************************************************************/
/************************************************************************/
/* U S B C A L L B A C K F U N C T I O N S */
/* U S B C A L L B A C K F U N C T I O N S */
/************************************************************************/
/************************************************************************/
/*****************************************************************************
* edge_interrupt_callback
* this is the callback function for when we have received data on the
* interrupt endpoint.
*****************************************************************************/
static void edge_interrupt_callback (struct urb *urb)
{
struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
struct edgeport_port *edge_port;
struct usb_serial_port *port;
unsigned char *data = urb->transfer_buffer;
int length = urb->actual_length;
int bytes_avail;
int position;
int txCredits;
int portNumber;
int result;
dbg(__FUNCTION__);
if (serial_paranoia_check (edge_serial->serial, __FUNCTION__)) {
return;
}
if (urb->status) {
dbg(__FUNCTION__" - nonzero control read status received: %d", urb->status);
return;
}
// process this interrupt-read even if there are no ports open
if (length) {
usb_serial_debug_data (__FILE__, __FUNCTION__, length, data);
if (length > 1) {
bytes_avail = data[0] | (data[1] << 8);
if (bytes_avail) {
edge_serial->rxBytesAvail += bytes_avail;
dbg(__FUNCTION__" - bytes_avail = %d, rxBytesAvail %d", bytes_avail, edge_serial->rxBytesAvail);
if ((edge_serial->rxBytesAvail > 0) &&
(edge_serial->read_urb->status != -EINPROGRESS)) {
dbg(" --- Posting a read");
/* we have pending bytes on the bulk in pipe, send a request */
edge_serial->read_urb->dev = edge_serial->serial->dev;
result = usb_submit_urb(edge_serial->read_urb);
if (result) {
dbg(__FUNCTION__" - usb_submit_urb(read bulk) failed with result = %d", result);
}
}
}
}
/* grab the txcredits for the ports if available */
position = 2;
portNumber = 0;
while ((position < length) && (portNumber < edge_serial->serial->num_ports)) {
txCredits = data[position] | (data[position+1] << 8);
if (txCredits) {
port = &edge_serial->serial->port[portNumber];
if (port_paranoia_check (port, __FUNCTION__) == 0) {
edge_port = (struct edgeport_port *)port->private;
if (edge_port->open) {
edge_port->txCredits += txCredits;
dbg(__FUNCTION__" - txcredits for port%d = %d", portNumber, edge_port->txCredits);
/* tell the tty driver that something has changed */
wake_up_interruptible(&edge_port->port->tty->write_wait);
// Since we have more credit, check if more data can be sent
send_more_port_data(edge_serial, edge_port);
}
}
}
position += 2;
++portNumber;
}
}
}
/*****************************************************************************
* edge_bulk_in_callback
* this is the callback function for when we have received data on the
* bulk in endpoint.
*****************************************************************************/
static void edge_bulk_in_callback (struct urb *urb)
{
struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
unsigned char *data = urb->transfer_buffer;
int status;
__u16 raw_data_length;
dbg(__FUNCTION__);
if (serial_paranoia_check (edge_serial->serial, __FUNCTION__)) {
return;
}
if (urb->status) {
dbg(__FUNCTION__" - nonzero read bulk status received: %d", urb->status);
return;
}
if (urb->actual_length) {
raw_data_length = urb->actual_length;
usb_serial_debug_data (__FILE__, __FUNCTION__, raw_data_length, data);
/* decrement our rxBytes available by the number that we just got */
edge_serial->rxBytesAvail -= raw_data_length;
dbg(__FUNCTION__" - Received = %d, rxBytesAvail %d", raw_data_length, edge_serial->rxBytesAvail);
process_rcvd_data (edge_serial, data, urb->actual_length);
/* check to see if there's any more data for us to read */
if ((edge_serial->rxBytesAvail > 0) &&
(edge_serial->read_urb->status != -EINPROGRESS)) {
dbg(" --- Posting a read");
/* there is, so resubmit our urb */
edge_serial->read_urb->dev = edge_serial->serial->dev;
status = usb_submit_urb(edge_serial->read_urb);
if (status) {
err(__FUNCTION__" - usb_submit_urb(read bulk) failed, status = %d", status);
}
}
}
}
/*****************************************************************************
* edge_bulk_out_data_callback
* this is the callback function for when we have finished sending serial data
* on the bulk out endpoint.
*****************************************************************************/
static void edge_bulk_out_data_callback (struct urb *urb)
{
struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
struct tty_struct *tty;
dbg(__FUNCTION__);
if (port_paranoia_check (edge_port->port, __FUNCTION__)) {
return;
}
if (urb->status) {
dbg(__FUNCTION__" - nonzero write bulk status received: %d", urb->status);
}
tty = edge_port->port->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);
// Release the Write URB
edge_port->write_in_progress = FALSE;
// Check if more data needs to be sent
send_more_port_data((struct edgeport_serial *)(edge_port->port->serial->private), edge_port);
}
/*****************************************************************************
* BulkOutCmdCallback
* this is the callback function for when we have finished sending a command
* on the bulk out endpoint.
*****************************************************************************/
static void edge_bulk_out_cmd_callback (struct urb *urb)
{
struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
struct tty_struct *tty;
int status = urb->status;
dbg(__FUNCTION__);
CmdUrbs--;
dbg(__FUNCTION__" - FREE URB %p (outstanding %d)", urb, CmdUrbs);
/* clean up the transfer buffer */
if (urb->transfer_buffer != NULL) {
kfree(urb->transfer_buffer);
}
// Free the command urb
usb_unlink_urb (urb);
usb_free_urb (urb);
if (port_paranoia_check (edge_port->port, __FUNCTION__)) {
return;
}
if (status) {
dbg(__FUNCTION__" - nonzero write bulk status received: %d", status);
return;
}
/* Get pointer to tty */
tty = edge_port->port->tty;
/* tell the tty driver that something has changed */
wake_up_interruptible(&tty->write_wait);
/* we have completed the command */
edge_port->commandPending = FALSE;
wake_up_interruptible(&edge_port->wait_command);
}
/*****************************************************************************
* Driver tty interface functions
*****************************************************************************/
/*****************************************************************************
* SerialOpen
* this function is called by the tty driver when a port is opened
* If successful, we return 0
* Otherwise we return a negative error number.
*****************************************************************************/
static int edge_open (struct usb_serial_port *port, struct file * filp)
{
struct edgeport_port *edge_port = (struct edgeport_port *)port->private;
struct usb_serial *serial;
struct edgeport_serial *edge_serial;
int response;
int timeout;
if (port_paranoia_check (port, __FUNCTION__))
return -ENODEV;
dbg(__FUNCTION__ " - port %d", port->number);
if (edge_port == NULL)
return -ENODEV;
++port->open_count;
MOD_INC_USE_COUNT;
if (!port->active) {
port->active = 1;
/* 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. */
port->tty->low_latency = 1;
/* see if we've set up our endpoint info yet (can't set it up in edge_startup
as the structures were not set up at that time.) */
serial = port->serial;
edge_serial = (struct edgeport_serial *)serial->private;
if (edge_serial == NULL) {
port->active = 0;
port->open_count = 0;
MOD_DEC_USE_COUNT;
return -ENODEV;
}
if (edge_serial->interrupt_in_buffer == NULL) {
struct usb_serial_port *port0 = &serial->port[0];
/* not set up yet, so do it now */
edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer;
edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress;
edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress;
edge_serial->read_urb = port0->read_urb;
edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress;
/* set up our interrupt urb */
FILL_INT_URB(edge_serial->interrupt_read_urb,
serial->dev,
usb_rcvintpipe(serial->dev,
port0->interrupt_in_endpointAddress),
port0->interrupt_in_buffer,
edge_serial->interrupt_read_urb->transfer_buffer_length,
edge_interrupt_callback, edge_serial,
edge_serial->interrupt_read_urb->interval);
/* set up our bulk in urb */
FILL_BULK_URB(edge_serial->read_urb, serial->dev,
usb_rcvbulkpipe(serial->dev, port0->bulk_in_endpointAddress),
port0->bulk_in_buffer,
edge_serial->read_urb->transfer_buffer_length,
edge_bulk_in_callback, edge_serial);
/* start interrupt read for this edgeport
* this interrupt will continue as long as the edgeport is connected */
response = usb_submit_urb (edge_serial->interrupt_read_urb);
if (response) {
err(__FUNCTION__" - Error %d submitting control urb", response);
}
}
/* initialize our wait queues */
init_waitqueue_head(&edge_port->wait_open);
init_waitqueue_head(&edge_port->wait_chase);
init_waitqueue_head(&edge_port->delta_msr_wait);
init_waitqueue_head(&edge_port->wait_command);
/* initialize our icount structure */
memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
/* initialize our port settings */
edge_port->txCredits = 0; /* Can't send any data yet */
edge_port->shadowMCR = MCR_MASTER_IE; /* Must always set this bit to enable ints! */
edge_port->chaseResponsePending = FALSE;
/* send a open port command */
edge_port->openPending = TRUE;
edge_port->open = FALSE;
response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0);
if (response < 0) {
err(__FUNCTION__" - error sending open port command");
edge_port->openPending = FALSE;
port->active = 0;
port->open_count = 0;
MOD_DEC_USE_COUNT;
return -ENODEV;
}
/* now wait for the port to be completly opened */
timeout = OPEN_TIMEOUT;
while (timeout && edge_port->openPending == TRUE) {
timeout = interruptible_sleep_on_timeout (&edge_port->wait_open, timeout);
}
if (edge_port->open == FALSE) {
/* open timed out */
dbg(__FUNCTION__" - open timedout");
edge_port->openPending = FALSE;
port->active = 0;
port->open_count = 0;
MOD_DEC_USE_COUNT;
return -ENODEV;
}
/* create the txfifo */
edge_port->txfifo.head = 0;
edge_port->txfifo.tail = 0;
edge_port->txfifo.count = 0;
edge_port->txfifo.size = edge_port->maxTxCredits;
edge_port->txfifo.fifo = kmalloc (edge_port->maxTxCredits, GFP_KERNEL);
if (!edge_port->txfifo.fifo) {
dbg(__FUNCTION__" - no memory");
edge_close (port, filp);
return -ENOMEM;
}
/* Allocate a URB for the write */
edge_port->write_urb = usb_alloc_urb (0);
if (!edge_port->write_urb) {
dbg(__FUNCTION__" - no memory");
edge_close (port, filp);
return -ENOMEM;
}
dbg(__FUNCTION__"(%d) - Initialize TX fifo to %d bytes", port->number, edge_port->maxTxCredits);
}
dbg(__FUNCTION__" exited");
return 0;
}
/************************************************************************
*
* block_until_chase_response
*
* This function will block the close until one of the following:
* 1. Response to our Chase comes from Edgeport
* 2. A timout of 10 seconds without activity has expired
* (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
*
************************************************************************/
static void block_until_chase_response(struct edgeport_port *edge_port)
{
__u16 lastCredits;
int timeout = 1*HZ;
int wait = 10;
while (1) {
// Save Last credits
lastCredits = edge_port->txCredits;
// Did we get our Chase response
if (edge_port->chaseResponsePending == FALSE) {
dbg(__FUNCTION__" - Got Chase Response");
// did we get all of our credit back?
if (edge_port->txCredits == edge_port->maxTxCredits ) {
dbg(__FUNCTION__" - Got all credits");
return;
}
}
// Block the thread for a while
interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
if (lastCredits == edge_port->txCredits) {
// No activity.. count down.
wait--;
if (wait == 0) {
edge_port->chaseResponsePending = FALSE;
dbg(__FUNCTION__" - Chase TIMEOUT");
return;
}
} else {
// Reset timout value back to 10 seconds
dbg(__FUNCTION__" - Last %d, Current %d", lastCredits, edge_port->txCredits);
wait = 10;
}
}
}
/************************************************************************
*
* block_until_tx_empty
*
* This function will block the close until one of the following:
* 1. TX count are 0
* 2. The edgeport has stopped
* 3. A timout of 3 seconds without activity has expired
*
************************************************************************/
static void block_until_tx_empty (struct edgeport_port *edge_port)
{
struct TxFifo *fifo = &edge_port->txfifo;
__u32 lastCount;
int timeout = HZ/10;
int wait = 30;
while (1) {
// Save Last count
lastCount = fifo->count;
// Is the Edgeport Buffer empty?
if (lastCount == 0) {
dbg(__FUNCTION__" - TX Buffer Empty");
return;
}
// Block the thread for a while
interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
dbg(__FUNCTION__ " wait");
if (lastCount == fifo->count) {
// No activity.. count down.
wait--;
if (wait == 0) {
dbg(__FUNCTION__" - TIMEOUT");
return;
}
} else {
// Reset timout value back to seconds
wait = 30;
}
}
}
/*****************************************************************************
* edge_close
* this function is called by the tty driver when a port is closed
*****************************************************************************/
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 status;
if (port_paranoia_check (port, __FUNCTION__))
return;
dbg(__FUNCTION__ " - port %d", 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;
--port->open_count;
if (port->open_count <= 0) {
if (serial->dev) {
// block until tx is empty
block_until_tx_empty(edge_port);
edge_port->closePending = TRUE;
/* flush and chase */
edge_port->chaseResponsePending = TRUE;
dbg(__FUNCTION__" - Sending IOSP_CMD_CHASE_PORT");
status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
if (status == 0) {
// block until chase finished
block_until_chase_response(edge_port);
} else {
edge_port->chaseResponsePending = FALSE;
}
/* close the port */
dbg(__FUNCTION__" - Sending IOSP_CMD_CLOSE_PORT");
send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0);
//port->close = TRUE;
edge_port->closePending = FALSE;
edge_port->open = FALSE;
edge_port->openPending = FALSE;
if (edge_port->write_urb) {
usb_unlink_urb (edge_port->write_urb);
}
}
if (edge_port->write_urb) {
/* if this urb had a transfer buffer already (old transfer) free it */
if (edge_port->write_urb->transfer_buffer != NULL) {
kfree(edge_port->write_urb->transfer_buffer);
}
usb_free_urb (edge_port->write_urb);
}
if (edge_port->txfifo.fifo) {
kfree(edge_port->txfifo.fifo);
}
port->active = 0;
port->open_count = 0;
}
MOD_DEC_USE_COUNT;
dbg(__FUNCTION__" exited");
}
/*****************************************************************************
* SerialWrite
* this function is called by the tty driver when data should be written to
* the port.
* If successful, we return the number of bytes written, otherwise we return
* a negative error number.
*****************************************************************************/
static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *data, int count)
{
struct edgeport_port *edge_port = (struct edgeport_port *)port->private;
struct TxFifo *fifo;
int copySize;
int bytesleft;
int firsthalf;
int secondhalf;
dbg(__FUNCTION__ " - port %d", port->number);
if (edge_port == NULL)
return -ENODEV;
// get a pointer to the Tx fifo
fifo = &edge_port->txfifo;
// calculate number of bytes to put in fifo
copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count));
dbg(__FUNCTION__"(%d) of %d byte(s) Fifo room %d -- will copy %d bytes",
port->number, count, edge_port->txCredits - fifo->count, copySize);
/* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */
if (copySize == 0) {
dbg (__FUNCTION__" - copySize = Zero");
return 0;
}
// queue the data
// since we can never overflow the buffer we do not have to check for full condition
// the copy is done is two parts -- first fill to the end of the buffer
// then copy the reset from the start of the buffer
bytesleft = fifo->size - fifo->head;
firsthalf = min (bytesleft, copySize);
dbg (__FUNCTION__" - copy %d bytes of %d into fifo ", firsthalf, bytesleft);
/* now copy our data */
if (from_user) {
if (copy_from_user(&fifo->fifo[fifo->head], data, firsthalf))
return -EFAULT;
} else {
memcpy(&fifo->fifo[fifo->head], data, firsthalf);
}
// update the index and size
fifo->head += firsthalf;
fifo->count += firsthalf;
// wrap the index
if (fifo->head == fifo->size) {
fifo->head = 0;
}
secondhalf = copySize-firsthalf;
if (secondhalf) {
dbg (__FUNCTION__" - copy rest of data %d", secondhalf);
if (from_user) {
if (copy_from_user(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf))
return -EFAULT;
} else {
memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
}
// update the index and size
fifo->count += secondhalf;
fifo->head += secondhalf;
// No need to check for wrap since we can not get to end of fifo in this part
}
if (copySize) {
usb_serial_debug_data (__FILE__, __FUNCTION__, copySize, data);
}
send_more_port_data((struct edgeport_serial *)port->serial->private, edge_port);
dbg(__FUNCTION__" wrote %d byte(s) TxCredits %d, Fifo %d", copySize, edge_port->txCredits, fifo->count);
return copySize;
}
/************************************************************************
*
* send_more_port_data()
*
* This routine attempts to write additional UART transmit data
* to a port over the USB bulk pipe. It is called (1) when new
* data has been written to a port's TxBuffer from higher layers
* (2) when the peripheral sends us additional TxCredits indicating
* that it can accept more Tx data for a given port; and (3) when
* a bulk write completes successfully and we want to see if we
* can transmit more.
*
************************************************************************/
static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port)
{
struct TxFifo *fifo = &edge_port->txfifo;
struct urb *urb;
unsigned char *buffer;
int status;
int count;
int bytesleft;
int firsthalf;
int secondhalf;
dbg(__FUNCTION__"(%d)", edge_port->port->number);
if (edge_port->write_in_progress ||
!edge_port->open ||
(fifo->count == 0)) {
dbg(__FUNCTION__"(%d) EXIT - fifo %d, PendingWrite = %d", edge_port->port->number, fifo->count, edge_port->write_in_progress);
return;
}
// since the amount of data in the fifo will always fit into the
// edgeport buffer we do not need to check the write length
// Do we have enough credits for this port to make it worthwhile
// to bother queueing a write. If it's too small, say a few bytes,
// it's better to wait for more credits so we can do a larger
// write.
if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits)) {
dbg(__FUNCTION__"(%d) Not enough credit - fifo %d TxCredit %d", edge_port->port->number, fifo->count, edge_port->txCredits );
return;
}
// lock this write
edge_port->write_in_progress = TRUE;
// get a pointer to the write_urb
urb = edge_port->write_urb;
/* if this urb had a transfer buffer already (old transfer) free it */
if (urb->transfer_buffer != NULL) {
kfree(urb->transfer_buffer);
urb->transfer_buffer = NULL;
}
/* build the data header for the buffer and port that we are about to send out */
count = fifo->count;
buffer = kmalloc (count+2, GFP_KERNEL);
if (buffer == NULL) {
err(__FUNCTION__" - no more kernel memory...");
edge_port->write_in_progress = FALSE;
return;
}
buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number, count);
buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number, count);
/* now copy our data */
bytesleft = fifo->size - fifo->tail;
firsthalf = min (bytesleft, count);
memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
fifo->tail += firsthalf;
fifo->count -= firsthalf;
if (fifo->tail == fifo->size) {
fifo->tail = 0;
}
secondhalf = count-firsthalf;
if (secondhalf) {
memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf);
fifo->tail += secondhalf;
fifo->count -= secondhalf;
}
if (count) {
usb_serial_debug_data (__FILE__, __FUNCTION__, count, &buffer[2]);
}
/* fill up the urb with all of our data and submit it */
FILL_BULK_URB (urb, edge_serial->serial->dev,
usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
buffer, count+2, edge_bulk_out_data_callback, edge_port);
/* set the USB_BULK_QUEUE flag so that we can shove a bunch of urbs at once down the pipe */
urb->transfer_flags |= USB_QUEUE_BULK;
urb->dev = edge_serial->serial->dev;
status = usb_submit_urb(urb);
if (status) {
/* something went wrong */
dbg(__FUNCTION__" - usb_submit_urb(write bulk) failed");
edge_port->write_in_progress = FALSE;
} else {
/* decrement the number of credits we have by the number we just sent */
edge_port->txCredits -= count;
edge_port->icount.tx += count;
}
dbg(__FUNCTION__" wrote %d byte(s) TxCredit %d, Fifo %d", count, edge_port->txCredits, fifo->count);
}
/*****************************************************************************
* edge_write_room
* this function is called by the tty driver when it wants to know how many
* bytes of data we can accept for a specific port.
* If successful, we return the amount of room that we have for this port
* (the txCredits),
* Otherwise we return a negative error number.
*****************************************************************************/
static int edge_write_room (struct usb_serial_port *port)
{
struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
int room;
dbg(__FUNCTION__);
if (edge_port == NULL)
return -ENODEV;
if (edge_port->closePending == TRUE)
return -ENODEV;
dbg(__FUNCTION__" - port %d", port->number);
if (!edge_port->open) {
dbg (__FUNCTION__" - port not opened");
return -EINVAL;
}
// total of both buffers is still txCredit
room = edge_port->txCredits - edge_port->txfifo.count;
dbg(__FUNCTION__" - returns %d", room);
return room;
}
/*****************************************************************************
* edge_chars_in_buffer
* this function is called by the tty driver when it wants to know how many
* bytes of data we currently have outstanding in the port (data that has
* been written, but hasn't made it out the port yet)
* If successful, we return the number of bytes left to be written in the
* system,
* Otherwise we return a negative error number.
*****************************************************************************/
static int edge_chars_in_buffer (struct usb_serial_port *port)
{
struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
int num_chars;
dbg(__FUNCTION__);
if (edge_port == NULL)
return -ENODEV;
if (edge_port->closePending == TRUE)
return -ENODEV;
if (!edge_port->open) {
dbg (__FUNCTION__" - port not opened");
return -EINVAL;
}
num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count;
if (num_chars) {
dbg(__FUNCTION__"(port %d) - returns %d", port->number, num_chars);
}
return num_chars;
}
/*****************************************************************************
* SerialThrottle
* this function is called by the tty driver when it wants to stop the data
* being read from the port.
*****************************************************************************/
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(__FUNCTION__" - port %d", port->number);
if (edge_port == NULL)
return;
if (!edge_port->open) {
dbg (__FUNCTION__" - port not opened");
return;
}
tty = port->tty;
/* 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) {
edge_port->shadowMCR &= ~MCR_RTS;
status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
if (status != 0) {
return;
}
}
return;
}
/*****************************************************************************
* edge_unthrottle
* this function is called by the tty driver when it wants to resume the data
* being read from the port (called after SerialThrottle is called)
*****************************************************************************/
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(__FUNCTION__" - port %d", port->number);
if (edge_port == NULL)
return;
if (!edge_port->open) {
dbg (__FUNCTION__" - port not opened");
return;
}
tty = port->tty;
/* 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) {
edge_port->shadowMCR |= MCR_RTS;
status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
if (status != 0) {
return;
}
}
return;
}
/*****************************************************************************
* SerialSetTermios
* this function is called by the tty driver when it wants to change the termios structure
*****************************************************************************/
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 = tty->termios->c_cflag;
dbg(__FUNCTION__" - clfag %08x %08x iflag %08x %08x",
tty->termios->c_cflag,
old_termios->c_cflag,
RELEVANT_IFLAG(tty->termios->c_iflag),
RELEVANT_IFLAG(old_termios->c_iflag)
);
/* 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(__FUNCTION__" - nothing to change");
return;
}
}
dbg(__FUNCTION__" - port %d", port->number);
if (edge_port == NULL)
return;
if (!edge_port->open) {
dbg (__FUNCTION__" - port not opened");
return;
}
/* change the port settings to the new ones specified */
change_port_settings (edge_port, old_termios);
return;
}
/*****************************************************************************
* get_lsr_info - get line status register info
*
* Purpose: Let user call ioctl() to get info when the UART physically
* is emptied. On bus types like RS485, the transmitter must
* release the bus after transmitting. This must be done when
* the transmit shift register is empty, not be done when the
* transmit holding register is empty. This functionality
* allows an RS485 driver to be written in user space.
*****************************************************************************/
static int get_lsr_info(struct edgeport_port *edge_port, unsigned int *value)
{
unsigned int result = 0;
if (edge_port->maxTxCredits == edge_port->txCredits &&
edge_port->txfifo.count == 0) {
dbg(__FUNCTION__" -- Empty");
result = TIOCSER_TEMT;
}
if (copy_to_user(value, &result, sizeof(int)))
return -EFAULT;
return 0;
}
static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int *value)
{
unsigned int result = 0;
struct tty_struct *tty = edge_port->port->tty;
result = tty->read_cnt;
dbg(__FUNCTION__"(%d) = %d", edge_port->port->number, result);
if (copy_to_user(value, &result, sizeof(int)))
return -EFAULT;
//return 0;
return -ENOIOCTLCMD;
}
static int set_modem_info(struct edgeport_port *edge_port, unsigned int cmd, unsigned int *value)
{
unsigned int mcr = edge_port->shadowMCR;
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->shadowMCR = mcr;
send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
return 0;
}
static int get_modem_info(struct edgeport_port *edge_port, unsigned int *value)
{
unsigned int result = 0;
unsigned int msr = edge_port->shadowMSR;
unsigned int mcr = edge_port->shadowMCR;
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(__FUNCTION__" -- %x", 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->maxTxCredits;
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;
}
/*****************************************************************************
* SerialIoctl
* this function handles any ioctl calls to the driver
*****************************************************************************/
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;
struct serial_icounter_struct icount;
dbg(__FUNCTION__" - port %d, cmd = 0x%x", port->number, cmd);
switch (cmd) {
// return number of bytes available
case TIOCINQ:
dbg(__FUNCTION__" (%d) TIOCINQ", port->number);
return get_number_bytes_avail(edge_port, (unsigned int *) arg);
break;
case TIOCSERGETLSR:
dbg(__FUNCTION__" (%d) TIOCSERGETLSR", port->number);
return get_lsr_info(edge_port, (unsigned int *) arg);
return 0;
case TIOCMBIS:
case TIOCMBIC:
case TIOCMSET:
dbg(__FUNCTION__" (%d) TIOCMSET/TIOCMBIC/TIOCMSET", port->number);
return set_modem_info(edge_port, cmd, (unsigned int *) arg);
case TIOCMGET:
dbg(__FUNCTION__" (%d) TIOCMGET", port->number);
return get_modem_info(edge_port, (unsigned int *) arg);
case TIOCGSERIAL:
dbg(__FUNCTION__" (%d) TIOCGSERIAL", port->number);
return get_serial_info(edge_port, (struct serial_struct *) arg);
case TIOCSSERIAL:
dbg(__FUNCTION__" (%d) TIOCSSERIAL", port->number);
break;
case TIOCMIWAIT:
dbg(__FUNCTION__" (%d) TIOCMIWAIT", 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;
}
/* NOTREACHED */
break;
case TIOCGICOUNT:
cnow = edge_port->icount;
icount.cts = cnow.cts;
icount.dsr = cnow.dsr;
icount.rng = cnow.rng;
icount.dcd = cnow.dcd;
icount.rx = cnow.rx;
icount.tx = cnow.tx;
icount.frame = cnow.frame;
icount.overrun = cnow.overrun;
icount.parity = cnow.parity;
icount.brk = cnow.brk;
icount.buf_overrun = cnow.buf_overrun;
dbg(__FUNCTION__" (%d) TIOCGICOUNT RX=%d, TX=%d", port->number, icount.rx, icount.tx );
if (copy_to_user((void *)arg, &icount, sizeof(icount)))
return -EFAULT;
return 0;
}
return -ENOIOCTLCMD;
}
/*****************************************************************************
* SerialBreak
* this function sends a break to the port
*****************************************************************************/
static void edge_break (struct usb_serial_port *port, int break_state)
{
struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
int status;
/* flush and chase */
edge_port->chaseResponsePending = TRUE;
dbg(__FUNCTION__" - Sending IOSP_CMD_CHASE_PORT");
status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
if (status == 0) {
// block until chase finished
block_until_chase_response(edge_port);
} else {
edge_port->chaseResponsePending = FALSE;
}
if (break_state == -1) {
dbg(__FUNCTION__" - Sending IOSP_CMD_SET_BREAK");
status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0);
} else {
dbg(__FUNCTION__" - Sending IOSP_CMD_CLEAR_BREAK");
status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0);
}
if (status) {
dbg(__FUNCTION__" - error sending break set/clear command.");
}
return;
}
/*****************************************************************************
* process_rcvd_data
* this function handles the data received on the bulk in pipe.
*****************************************************************************/
static int process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char * buffer, __u16 bufferLength)
{
struct usb_serial_port *port;
struct edgeport_port *edge_port;
struct tty_struct *tty;
__u16 lastBufferLength;
__u16 rxLen;
int i;
dbg(__FUNCTION__);
lastBufferLength = bufferLength + 1;
while (bufferLength > 0) {
/* failsafe incase we get a message that we don't understand */
if (lastBufferLength == bufferLength) {
dbg(__FUNCTION__" - stuck in loop, exiting it.");
break;
}
lastBufferLength = bufferLength;
switch (edge_serial->rxState) {
case EXPECT_HDR1:
edge_serial->rxHeader1 = *buffer;
++buffer;
--bufferLength;
if (bufferLength == 0) {
edge_serial->rxState = EXPECT_HDR2;
break;
}
/* otherwise, drop on through */
case EXPECT_HDR2:
edge_serial->rxHeader2 = *buffer;
++buffer;
--bufferLength;
dbg(__FUNCTION__" - Hdr1=%02X Hdr2=%02X", edge_serial->rxHeader1, edge_serial->rxHeader2);
// Process depending on whether this header is
// data or status
if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
// Decode this status header and goto EXPECT_HDR1 (if we
// can process the status with only 2 bytes), or goto
// EXPECT_HDR3 to get the third byte.
edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE(edge_serial->rxHeader1);
if (!IOSP_STATUS_IS_2BYTE(edge_serial->rxStatusCode)) {
// This status needs additional bytes. Save what we have
// and then wait for more data.
edge_serial->rxStatusParam = edge_serial->rxHeader2;
edge_serial->rxState = EXPECT_HDR3;
break;
}
// We have all the header bytes, process the status now
process_rcvd_status (edge_serial, edge_serial->rxHeader2, 0);
edge_serial->rxState = EXPECT_HDR1;
break;
} else {
edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2);
dbg(__FUNCTION__" - Data for Port %u Len %u", edge_serial->rxPort, edge_serial->rxBytesRemaining);
//ASSERT( DevExt->RxPort < DevExt->NumPorts );
//ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH );
if (bufferLength == 0 ) {
edge_serial->rxState = EXPECT_DATA;
break;
}
// Else, drop through
}
case EXPECT_DATA: // Expect data
if (bufferLength < edge_serial->rxBytesRemaining) {
rxLen = bufferLength;
edge_serial->rxState = EXPECT_DATA; // Expect data to start next buffer
} else {
// BufLen >= RxBytesRemaining
rxLen = edge_serial->rxBytesRemaining;
edge_serial->rxState = EXPECT_HDR1; // Start another header next time
}
bufferLength -= rxLen;
edge_serial->rxBytesRemaining -= rxLen;
/* spit this data back into the tty driver if this port is open */
if (rxLen) {
port = &edge_serial->serial->port[edge_serial->rxPort];
if (port_paranoia_check (port, __FUNCTION__) == 0) {
edge_port = (struct edgeport_port *)port->private;
if (edge_port->open) {
tty = edge_port->port->tty;
if (tty) {
dbg (__FUNCTION__" - Sending %d bytes to TTY for port %d", rxLen, edge_serial->rxPort);
for (i = 0; i < rxLen ; ++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, buffer[i], 0);
}
tty_flip_buffer_push(tty);
}
edge_port->icount.rx += rxLen;
}
}
buffer += rxLen;
}
break;
case EXPECT_HDR3: // Expect 3rd byte of status header
edge_serial->rxHeader3 = *buffer;
++buffer;
--bufferLength;
// We have all the header bytes, process the status now
process_rcvd_status (edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3);
edge_serial->rxState = EXPECT_HDR1;
break;
}
}
return 0;
}
/*****************************************************************************
* process_rcvd_status
* this function handles the any status messages received on the bulk in pipe.
*****************************************************************************/
static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3)
{
struct usb_serial_port *port;
struct edgeport_port *edge_port;
__u8 code = edge_serial->rxStatusCode;
/* switch the port pointer to the one being currently talked about */
port = &edge_serial->serial->port[edge_serial->rxPort];
if (port_paranoia_check (port, __FUNCTION__)) {
return;
}
edge_port = (struct edgeport_port *)port->private;
if (edge_port == NULL) {
err (__FUNCTION__ " - edge_port == NULL for port %d", edge_serial->rxPort);
return;
}
dbg(__FUNCTION__" - port %d", edge_serial->rxPort);
if (code == IOSP_EXT_STATUS) {
switch (byte2) {
case IOSP_EXT_STATUS_CHASE_RSP:
// we want to do EXT status regardless of port open/closed
dbg(__FUNCTION__" - Port %u EXT CHASE_RSP Data = %02x", edge_serial->rxPort, byte3 );
// Currently, the only EXT_STATUS is Chase, so process here instead of one more call
// to one more subroutine. If/when more EXT_STATUS, there'll be more work to do.
// Also, we currently clear flag and close the port regardless of content of above's Byte3.
// We could choose to do something else when Byte3 says Timeout on Chase from Edgeport,
// like wait longer in block_until_chase_response, but for now we don't.
edge_port->chaseResponsePending = FALSE;
wake_up_interruptible (&edge_port->wait_chase);
return;
case IOSP_EXT_STATUS_RX_CHECK_RSP:
dbg( __FUNCTION__" ========== Port %u CHECK_RSP Sequence = %02x =============\n", edge_serial->rxPort, byte3 );
//Port->RxCheckRsp = TRUE;
return;
}
}
if (code == IOSP_STATUS_OPEN_RSP) {
edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
edge_port->maxTxCredits = edge_port->txCredits;
dbg (__FUNCTION__" - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", edge_serial->rxPort, byte2, edge_port->txCredits);
handle_new_msr (edge_port, byte2);
/* send the current line settings to the port so we are in sync with any further termios calls */
change_port_settings (edge_port, edge_port->port->tty->termios);
/* we have completed the open */
edge_port->openPending = FALSE;
edge_port->open = TRUE;
wake_up_interruptible(&edge_port->wait_open);
return;
}
// If port is closed, silently discard all rcvd status. We can
// have cases where buffered status is received AFTER the close
// port command is sent to the Edgeport.
if ((!edge_port->open ) || (edge_port->closePending)) {
return;
}
switch (code) {
// Not currently sent by Edgeport
case IOSP_STATUS_LSR:
dbg(__FUNCTION__" - Port %u LSR Status = %02x", edge_serial->rxPort, byte2);
handle_new_lsr (edge_port, FALSE, byte2, 0);
break;
case IOSP_STATUS_LSR_DATA:
dbg(__FUNCTION__" - Port %u LSR Status = %02x, Data = %02x", edge_serial->rxPort, byte2, byte3);
// byte2 is LSR Register
// byte3 is broken data byte
handle_new_lsr (edge_port, TRUE, byte2, byte3);
break;
//
// case IOSP_EXT_4_STATUS:
// dbg(__FUNCTION__" - Port %u LSR Status = %02x Data = %02x", edge_serial->rxPort, byte2, byte3);
// break;
//
case IOSP_STATUS_MSR:
dbg(__FUNCTION__" - Port %u MSR Status = %02x", edge_serial->rxPort, byte2);
// Process this new modem status and generate appropriate
// events, etc, based on the new status. This routine
// also saves the MSR in Port->ShadowMsr.
handle_new_msr(edge_port, byte2);
break;
default:
dbg(__FUNCTION__" - Unrecognized IOSP status code %u\n", code);
break;
}
return;
}
/*****************************************************************************
* handle_new_msr
* this function handles any change to the msr register for a port.
*****************************************************************************/
static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
{
struct async_icount *icount;
dbg(__FUNCTION__" %02x", newMsr);
if (newMsr & (MSR_DELTA_CTS | MSR_DELTA_DSR | MSR_DELTA_RI | MSR_DELTA_CD)) {
icount = &edge_port->icount;
/* update input line counters */
if (newMsr & MSR_DELTA_CTS) {
icount->cts++;
}
if (newMsr & MSR_DELTA_DSR) {
icount->dsr++;
}
if (newMsr & MSR_DELTA_CD) {
icount->dcd++;
}
if (newMsr & MSR_DELTA_RI) {
icount->rng++;
}
wake_up_interruptible(&edge_port->delta_msr_wait);
}
/* Save the new modem status */
edge_port->shadowMSR = newMsr & 0xf0;
return;
}
/*****************************************************************************
* handle_new_lsr
* this function handles any change to the lsr register for a port.
*****************************************************************************/
static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data)
{
__u8 newLsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
struct async_icount *icount;
dbg(__FUNCTION__" - %02x", newLsr);
edge_port->shadowLSR = lsr;
if (newLsr & LSR_BREAK) {
//
// Parity and Framing errors only count if they
// occur exclusive of a break being
// received.
//
newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
}
/* Place LSR data byte into Rx buffer */
if (lsrData) {
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 (newLsr & LSR_BREAK) {
icount->brk++;
}
if (newLsr & LSR_OVER_ERR) {
icount->overrun++;
}
if (newLsr & LSR_PAR_ERR) {
icount->parity++;
}
if (newLsr & LSR_FRM_ERR) {
icount->frame++;
}
return;
}
/****************************************************************************
* sram_write
* writes a number of bytes to the Edgeport device's sram starting at the
* given address.
* If successful returns the number of bytes written, otherwise it returns
* a negative error number of the problem.
****************************************************************************/
static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
{
int result;
__u16 current_length;
unsigned char *transfer_buffer;
// dbg (__FUNCTION__" - %x, %x, %d", extAddr, addr, length);
transfer_buffer = kmalloc (64, GFP_KERNEL);
if (!transfer_buffer) {
err(__FUNCTION__" - kmalloc(%d) failed.\n", 64);
return -ENOMEM;
}
/* need to split these writes up into 64 byte chunks */
result = 0;
while (length > 0) {
if (length > 64) {
current_length = 64;
} else {
current_length = length;
}
// dbg (__FUNCTION__" - writing %x, %x, %d", extAddr, addr, current_length);
memcpy (transfer_buffer, data, current_length);
result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM,
0x40, addr, extAddr, transfer_buffer, current_length, 300);
if (result < 0)
break;
length -= current_length;
addr += current_length;
data += current_length;
}
kfree (transfer_buffer);
return result;
}
/****************************************************************************
* rom_write
* writes a number of bytes to the Edgeport device's ROM starting at the
* given address.
* If successful returns the number of bytes written, otherwise it returns
* a negative error number of the problem.
****************************************************************************/
static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
{
int result;
__u16 current_length;
unsigned char *transfer_buffer;
// dbg (__FUNCTION__" - %x, %x, %d", extAddr, addr, length);
transfer_buffer = kmalloc (64, GFP_KERNEL);
if (!transfer_buffer) {
err(__FUNCTION__" - kmalloc(%d) failed.\n", 64);
return -ENOMEM;
}
/* need to split these writes up into 64 byte chunks */
result = 0;
while (length > 0) {
if (length > 64) {
current_length = 64;
} else {
current_length = length;
}
// dbg (__FUNCTION__" - writing %x, %x, %d", extAddr, addr, current_length);
memcpy (transfer_buffer, data, current_length);
result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM,
0x40, addr, extAddr, transfer_buffer, current_length, 300);
if (result < 0)
break;
length -= current_length;
addr += current_length;
data += current_length;
}
kfree (transfer_buffer);
return result;
}
/****************************************************************************
* rom_read
* reads a number of bytes from the Edgeport device starting at the given
* address.
* If successful returns the number of bytes read, otherwise it returns
* a negative error number of the problem.
****************************************************************************/
static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
{
int result;
__u16 current_length;
unsigned char *transfer_buffer;
dbg (__FUNCTION__" - %x, %x, %d", extAddr, addr, length);
transfer_buffer = kmalloc (64, GFP_KERNEL);
if (!transfer_buffer) {
err(__FUNCTION__" - kmalloc(%d) failed.\n", 64);
return -ENOMEM;
}
/* need to split these reads up into 64 byte chunks */
result = 0;
while (length > 0) {
if (length > 64) {
current_length = 64;
} else {
current_length = length;
}
// dbg (__FUNCTION__" - %x, %x, %d", extAddr, addr, current_length);
result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM,
0xC0, addr, extAddr, transfer_buffer, current_length, 300);
if (result < 0)
break;
memcpy (data, transfer_buffer, current_length);
length -= current_length;
addr += current_length;
data += current_length;
}
kfree (transfer_buffer);
return result;
}
/****************************************************************************
* send_iosp_ext_cmd
* Is used to send a IOSP message to the Edgeport device
****************************************************************************/
static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param)
{
unsigned char *buffer;
unsigned char *currentCommand;
int length = 0;
int status = 0;
dbg(__FUNCTION__" - %d, %d", command, param);
buffer = kmalloc (10, GFP_KERNEL);
if (!buffer) {
err(__FUNCTION__" - kmalloc(%d) failed.\n", 10);
return -ENOMEM;
}
currentCommand = buffer;
MAKE_CMD_EXT_CMD( ¤tCommand, &length, edge_port->port->number, command, param);
status = write_cmd_usb (edge_port, buffer, length);
if (status) {
/* something bad happened, let's free up the memory */
kfree(buffer);
}
return status;
}
/*****************************************************************************
* write_cmd_usb
* this function writes the given buffer out to the bulk write endpoint.
*****************************************************************************/
static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length)
{
struct edgeport_serial *edge_serial = (struct edgeport_serial *)edge_port->port->serial->private;
int status = 0;
urb_t *urb;
int timeout;
usb_serial_debug_data (__FILE__, __FUNCTION__, length, buffer);
/* Allocate our next urb */
urb = usb_alloc_urb (0);
if (!urb)
return -ENOMEM;
CmdUrbs++;
dbg(__FUNCTION__" - ALLOCATE URB %p (outstanding %d)", urb, CmdUrbs);
FILL_BULK_URB (urb, edge_serial->serial->dev,
usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
buffer, length, edge_bulk_out_cmd_callback, edge_port);
/* set the USB_BULK_QUEUE flag so that we can shove a bunch of urbs at once down the pipe */
urb->transfer_flags |= USB_QUEUE_BULK;
edge_port->commandPending = TRUE;
status = usb_submit_urb(urb);
if (status) {
/* something went wrong */
dbg(__FUNCTION__" - usb_submit_urb(write bulk) failed");
usb_unlink_urb (urb);
usb_free_urb (urb);
return status;
}
// wait for command to finish
timeout = COMMAND_TIMEOUT;
#if 0
while (timeout && edge_port->commandPending == TRUE) {
timeout = interruptible_sleep_on_timeout (&edge_port->wait_command, timeout);
}
if (edge_port->commandPending == TRUE) {
/* command timed out */
dbg(__FUNCTION__" - command timed out");
status = -EINVAL;
}
#endif
return status;
}
/*****************************************************************************
* send_cmd_write_baud_rate
* this function sends the proper command to change the baud rate of the
* specified port.
*****************************************************************************/
static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate)
{
unsigned char *cmdBuffer;
unsigned char *currCmd;
int cmdLen = 0;
int divisor;
int status;
unsigned char number = edge_port->port->number;
dbg(__FUNCTION__" - port = %d, baud = %d", number, baudRate);
status = calc_baud_rate_divisor (baudRate, &divisor);
if (status) {
err(__FUNCTION__" - bad baud rate");
return status;
}
// Alloc memory for the string of commands.
cmdBuffer = kmalloc (0x100, GFP_KERNEL);
if (!cmdBuffer) {
err(__FUNCTION__" - kmalloc(%d) failed.\n", 0x100);
return -ENOMEM;
}
currCmd = cmdBuffer;
// Enable access to divisor latch
MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE );
// Write the divisor itself
MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLL, LOW8 (divisor) );
MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLM, HIGH8(divisor) );
// Restore original value to disable access to divisor latch
MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR);
status = write_cmd_usb(edge_port, cmdBuffer, cmdLen );
if (status) {
/* something bad happened, let's free up the memory */
kfree (cmdBuffer);
}
return status;
}
/*****************************************************************************
* calc_baud_rate_divisor
* this function calculates the proper baud rate divisor for the specified
* baud rate.
*****************************************************************************/
static int calc_baud_rate_divisor (int baudrate, int *divisor)
{
int i;
__u16 custom;
__u16 round1;
__u16 round;
dbg(__FUNCTION__" - %d", baudrate);
for (i = 0; i < NUM_ENTRIES(DivisorTable); i++) {
if ( DivisorTable[i].BaudRate == baudrate ) {
*divisor = DivisorTable[i].Divisor;
return 0;
}
}
// We have tried all of the standard baud rates
// lets try to calculate the divisor for this baud rate
// Make sure the baud rate is reasonable
if (baudrate > 75 && baudrate < 230400) {
// get divisor
custom = (__u16)(230400L / baudrate);
// Check for round off
round1 = (__u16)(2304000L / baudrate);
round = (__u16)(round1 - (custom * 10));
if (round > 4) {
custom++;
}
*divisor = custom;
dbg(__FUNCTION__" - Baud %d = %d\n", baudrate, custom);
return 0;
}
return -1;
}
/*****************************************************************************
* send_cmd_write_uart_register
* this function builds up a uart register message and sends to to the device.
*****************************************************************************/
static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue)
{
unsigned char *cmdBuffer;
unsigned char *currCmd;
unsigned long cmdLen = 0;
int status;
dbg (__FUNCTION__" - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", regValue);
// Alloc memory for the string of commands.
cmdBuffer = kmalloc (0x10, GFP_KERNEL);
if (cmdBuffer == NULL ) {
return -ENOMEM;
}
currCmd = cmdBuffer;
// Build a cmd in the buffer to write the given register
MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->number, regNum, regValue);
status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
if (status) {
/* something bad happened, let's free up the memory */
kfree (cmdBuffer);
}
return status;
}
/*****************************************************************************
* change_port_settings
* This routine is called to set the UART on the device to match the specified
* new settings.
*****************************************************************************/
static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
{
struct tty_struct *tty;
int baud;
unsigned cflag;
__u8 mask = 0xff;
__u8 lData;
__u8 lParity;
__u8 lStop;
__u8 rxFlow;
__u8 txFlow;
int status;
dbg(__FUNCTION__" - port %d", edge_port->port->number);
if ((!edge_port->open) &&
(!edge_port->openPending)) {
dbg(__FUNCTION__" - port not opened");
return;
}
tty = edge_port->port->tty;
if ((!tty) ||
(!tty->termios)) {
dbg(__FUNCTION__" - no tty structures");
return;
}
cflag = tty->termios->c_cflag;
switch (cflag & CSIZE) {
case CS5: lData = LCR_BITS_5; mask = 0x1f; dbg(__FUNCTION__" - data bits = 5"); break;
case CS6: lData = LCR_BITS_6; mask = 0x3f; dbg(__FUNCTION__" - data bits = 6"); break;
case CS7: lData = LCR_BITS_7; mask = 0x7f; dbg(__FUNCTION__" - data bits = 7"); break;
default:
case CS8: lData = LCR_BITS_8; dbg(__FUNCTION__" - data bits = 8"); break;
}
lParity = LCR_PAR_NONE;
if (cflag & PARENB) {
if (cflag & PARODD) {
lParity = LCR_PAR_ODD;
dbg(__FUNCTION__" - parity = odd");
} else {
lParity = LCR_PAR_EVEN;
dbg(__FUNCTION__" - parity = even");
}
} else {
dbg(__FUNCTION__" - parity = none");
}
if (cflag & CSTOPB) {
lStop = LCR_STOP_2;
dbg(__FUNCTION__" - stop bits = 2");
} else {
lStop = LCR_STOP_1;
dbg(__FUNCTION__" - stop bits = 1");
}
/* figure out the flow control settings */
rxFlow = txFlow = 0x00;
if (cflag & CRTSCTS) {
rxFlow |= IOSP_RX_FLOW_RTS;
txFlow |= IOSP_TX_FLOW_CTS;
dbg(__FUNCTION__" - RTS/CTS is enabled");
} else {
dbg(__FUNCTION__" - RTS/CTS is disabled");
}
/* if we are implementing XON/XOFF, set the start and stop character in the device */
if (I_IXOFF(tty) || I_IXON(tty)) {
unsigned char stop_char = STOP_CHAR(tty);
unsigned char start_char = START_CHAR(tty);
send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XON_CHAR, start_char);
send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char);
/* if we are implementing INBOUND XON/XOFF */
if (I_IXOFF(tty)) {
rxFlow |= IOSP_RX_FLOW_XON_XOFF;
dbg(__FUNCTION__" - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", start_char, stop_char);
} else {
dbg(__FUNCTION__" - INBOUND XON/XOFF is disabled");
}
/* if we are implementing OUTBOUND XON/XOFF */
if (I_IXON(tty)) {
txFlow |= IOSP_TX_FLOW_XON_XOFF;
dbg(__FUNCTION__" - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", start_char, stop_char);
} else {
dbg(__FUNCTION__" - OUTBOUND XON/XOFF is disabled");
}
}
/* Set flow control to the configured value */
send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
edge_port->shadowLCR |= (lData | lParity | lStop);
edge_port->validDataMask = mask;
/* Send the updated LCR value to the EdgePort */
status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR);
if (status != 0) {
return;
}
/* set up the MCR register and send it to the EdgePort */
edge_port->shadowMCR = MCR_MASTER_IE;
if (cflag & CBAUD) {
edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
}
status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
if (status != 0) {
return;
}
/* Determine divisor based on baud rate */
baud = tty_get_baud_rate(tty);
if (!baud) {
/* pick a default, any default... */
baud = 9600;
}
dbg(__FUNCTION__ " - baud rate = %d", baud);
status = send_cmd_write_baud_rate (edge_port, baud);
return;
}
/****************************************************************************
* unicode_to_ascii
* Turns a string from Unicode into ASCII.
* Doesn't do a good job with any characters that are outside the normal
* ASCII range, but it's only for debugging...
****************************************************************************/
static void unicode_to_ascii (char *string, short *unicode, int unicode_size)
{
int i;
for (i = 0; i < unicode_size; ++i) {
string[i] = (char)(unicode[i]);
}
string[unicode_size] = 0x00;
}
/****************************************************************************
* get_manufacturing_desc
* reads in the manufacturing descriptor and stores it into the serial
* structure.
****************************************************************************/
static void get_manufacturing_desc (struct edgeport_serial *edge_serial)
{
int response;
dbg("getting manufacturer descriptor");
response = rom_read (edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
(__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN,
(__u8 *)(&edge_serial->manuf_descriptor));
if (response < 1) {
err("error in getting manufacturer descriptor");
} else {
char string[30];
dbg("**Manufacturer Descriptor");
dbg(" RomSize: %dK", edge_serial->manuf_descriptor.RomSize);
dbg(" RamSize: %dK", edge_serial->manuf_descriptor.RamSize);
dbg(" CpuRev: %d", edge_serial->manuf_descriptor.CpuRev);
dbg(" BoardRev: %d", edge_serial->manuf_descriptor.BoardRev);
dbg(" NumPorts: %d", edge_serial->manuf_descriptor.NumPorts);
dbg(" DescDate: %d/%d/%d", edge_serial->manuf_descriptor.DescDate[0], edge_serial->manuf_descriptor.DescDate[1], edge_serial->manuf_descriptor.DescDate[2]+1900);
unicode_to_ascii (string, edge_serial->manuf_descriptor.SerialNumber, edge_serial->manuf_descriptor.SerNumLength/2-1);
dbg(" SerialNumber: %s", string);
unicode_to_ascii (string, edge_serial->manuf_descriptor.AssemblyNumber, edge_serial->manuf_descriptor.AssemblyNumLength/2-1);
dbg(" AssemblyNumber: %s", string);
unicode_to_ascii (string, edge_serial->manuf_descriptor.OemAssyNumber, edge_serial->manuf_descriptor.OemAssyNumLength/2-1);
dbg(" OemAssyNumber: %s", string);
dbg(" UartType: %d", edge_serial->manuf_descriptor.UartType);
dbg(" IonPid: %d", edge_serial->manuf_descriptor.IonPid);
dbg(" IonConfig: %d", edge_serial->manuf_descriptor.IonConfig);
}
}
/****************************************************************************
* get_boot_desc
* reads in the bootloader descriptor and stores it into the serial
* structure.
****************************************************************************/
static void get_boot_desc (struct edgeport_serial *edge_serial)
{
int response;
dbg("getting boot descriptor");
response = rom_read (edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
(__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN,
(__u8 *)(&edge_serial->boot_descriptor));
if (response < 1) {
err("error in getting boot descriptor");
} else {
dbg("**Boot Descriptor:");
dbg(" BootCodeLength: %d", edge_serial->boot_descriptor.BootCodeLength);
dbg(" MajorVersion: %d", edge_serial->boot_descriptor.MajorVersion);
dbg(" MinorVersion: %d", edge_serial->boot_descriptor.MinorVersion);
dbg(" BuildNumber: %d", edge_serial->boot_descriptor.BuildNumber);
dbg(" Capabilities: 0x%x", edge_serial->boot_descriptor.Capabilities);
dbg(" UConfig0: %d", edge_serial->boot_descriptor.UConfig0);
dbg(" UConfig1: %d", edge_serial->boot_descriptor.UConfig1);
}
}
/****************************************************************************
* load_application_firmware
* This is called to load the application firmware to the device
****************************************************************************/
static void load_application_firmware (struct edgeport_serial *edge_serial)
{
PEDGE_FIRMWARE_IMAGE_RECORD record;
unsigned char *firmware;
unsigned char *FirmwareImage;
int ImageSize;
int response;
switch (edge_serial->product_info.iDownloadFile) {
case EDGE_DOWNLOAD_FILE_I930:
dbg("downloading firmware version (930) %d.%d.%d",
OperationalCodeImageVersion_GEN1.MajorVersion,
OperationalCodeImageVersion_GEN1.MinorVersion,
OperationalCodeImageVersion_GEN1.BuildNumber);
firmware = &OperationalCodeImage_GEN1[0];
FirmwareImage = &OperationalCodeImage_GEN1[0];
ImageSize = sizeof(OperationalCodeImage_GEN1);
break;
case EDGE_DOWNLOAD_FILE_80251:
dbg("downloading firmware version (80251) %d.%d.%d",
OperationalCodeImageVersion_GEN2.MajorVersion,
OperationalCodeImageVersion_GEN2.MinorVersion,
OperationalCodeImageVersion_GEN2.BuildNumber);
firmware = &OperationalCodeImage_GEN2[0];
FirmwareImage = &OperationalCodeImage_GEN2[0];
ImageSize = sizeof(OperationalCodeImage_GEN2);
break;
case EDGE_DOWNLOAD_FILE_NONE:
dbg ("No download file specified, skipping download\n");
return;
default:
return;
}
for (;;) {
record = (PEDGE_FIRMWARE_IMAGE_RECORD)firmware;
response = sram_write (edge_serial->serial, record->ExtAddr, record->Addr, record->Len, &record->Data[0]);
if (response < 0) {
err("sram_write failed (%x, %x, %d)", record->ExtAddr, record->Addr, record->Len);
break;
}
firmware += sizeof (EDGE_FIRMWARE_IMAGE_RECORD) + record->Len;
if (firmware >= &FirmwareImage[ImageSize]) {
break;
}
}
dbg("sending exec_dl_code");
response = usb_control_msg (edge_serial->serial->dev,
usb_sndctrlpipe(edge_serial->serial->dev, 0),
USB_REQUEST_ION_EXEC_DL_CODE,
0x40, 0x4000, 0x0001, NULL, 0, 3000);
return;
}
/****************************************************************************
* edge_startup
****************************************************************************/
static int edge_startup (struct usb_serial *serial)
{
struct edgeport_serial *edge_serial;
struct edgeport_port *edge_port;
struct usb_device *dev;
int i;
dev = serial->dev;
/* create our private serial structure */
edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
if (edge_serial == NULL) {
err(__FUNCTION__" - Out of memory");
return -ENOMEM;
}
memset (edge_serial, 0, sizeof(struct edgeport_serial));
edge_serial->serial = serial;
serial->private = edge_serial;
/* get the name for the device from the device */
if ( (i = get_string(dev, dev->descriptor.iManufacturer, &edge_serial->name[0])) != 0) {
edge_serial->name[i-1] = ' ';
}
get_string(dev, dev->descriptor.iProduct, &edge_serial->name[i]);
info("%s detected", edge_serial->name);
/* get the manufacturing descriptor for this device */
get_manufacturing_desc (edge_serial);
/* get the boot descriptor */
get_boot_desc (edge_serial);
get_product_info(edge_serial);
/* set the number of ports from the manufacturing description */
/* serial->num_ports = serial->product_info.NumPorts; */
if (edge_serial->product_info.NumPorts != serial->num_ports) {
warn(__FUNCTION__ " - Device Reported %d serial ports vs core "
"thinking we have %d ports, email greg@kroah.com this info.",
edge_serial->product_info.NumPorts, serial->num_ports);
}
dbg(__FUNCTION__ " - time 1 %ld", jiffies);
/* now load the application firmware into this device */
load_application_firmware (edge_serial);
dbg(__FUNCTION__ " - time 2 %ld", jiffies);
/* Check current Edgeport EEPROM and update if necessary */
update_edgeport_E2PROM (edge_serial);
dbg(__FUNCTION__ " - time 3 %ld", jiffies);
/* set the configuration to use #1 */
// dbg("set_configuration 1");
// usb_set_configuration (dev, 1);
/* we set up the pointers to the endpoints in the edge_open function,
* as the structures aren't created yet. */
/* 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(__FUNCTION__" - Out of memory");
return -ENOMEM;
}
memset (edge_port, 0, sizeof(struct edgeport_port));
edge_port->port = &serial->port[i];
serial->port[i].private = edge_port;
}
return 0;
}
/****************************************************************************
* edge_shutdown
* This function is called whenever the device is removed from the usb bus.
****************************************************************************/
static void edge_shutdown (struct usb_serial *serial)
{
int i;
dbg (__FUNCTION__);
/* stop reads and writes on all ports */
for (i=0; i < serial->num_ports; ++i) {
while (serial->port[i].open_count > 0) {
edge_close (&serial->port[i], NULL);
}
kfree (serial->port[i].private);
serial->port[i].private = NULL;
}
kfree (serial->private);
serial->private = NULL;
}
/****************************************************************************
* edgeport_init
* This is called by the module subsystem, or on startup to initialize us
****************************************************************************/
int __init edgeport_init(void)
{
usb_serial_register (&edgeport_1port_device);
usb_serial_register (&edgeport_2port_device);
usb_serial_register (&edgeport_4port_device);
usb_serial_register (&edgeport_8port_device);
info(DRIVER_DESC " " DRIVER_VERSION);
return 0;
}
/****************************************************************************
* edgeport_exit
* Called when the driver is about to be unloaded.
****************************************************************************/
void __exit edgeport_exit (void)
{
usb_serial_deregister (&edgeport_1port_device);
usb_serial_deregister (&edgeport_2port_device);
usb_serial_deregister (&edgeport_4port_device);
usb_serial_deregister (&edgeport_8port_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");
|