io_edgeport.c
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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 %un", 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 = %dn", 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 downloadn");
- 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");