Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
new file mode 100644
index 0000000..e35b5ad
--- /dev/null
+++ b/drivers/usb/serial/io_edgeport.c
@@ -0,0 +1,3113 @@
+/*
+ * Edgeport USB Serial Converter driver
+ *
+ * Copyright (C) 2000 Inside Out Networks, All rights reserved.
+ * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Supports the following devices:
+ * Edgeport/4
+ * Edgeport/4t
+ * Edgeport/2
+ * Edgeport/4i
+ * Edgeport/2i
+ * Edgeport/421
+ * Edgeport/21
+ * Rapidport/4
+ * Edgeport/8
+ * Edgeport/2D8
+ * Edgeport/4D8
+ * Edgeport/8i
+ *
+ * For questions or problems with this driver, contact Inside Out
+ * Networks technical support, or Peter Berger <pberger@brimson.com>,
+ * or Al Borchers <alborchers@steinerpoint.com>.
+ *
+ * Version history:
+ *
+ * 2003_04_03 al borchers
+ * - fixed a bug (that shows up with dosemu) where the tty struct is
+ * used in a callback after it has been freed
+ *
+ * 2.3 2002_03_08 greg kroah-hartman
+ * - fixed bug when multiple devices were attached at the same time.
+ *
+ * 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/jiffies.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/serial.h>
+#include <linux/ioctl.h>
+#include <linux/wait.h>
+#include <asm/uaccess.h>
+#include <linux/usb.h>
+#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 "v2.7"
+#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 */
+
+/* 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 */
+ spinlock_t ep_lock;
+
+ __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 */
+
+ struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
+ struct 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 */
+ int read_in_progress;
+ spinlock_t es_lock;
+
+ __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 */
+struct divisor_table_entry {
+ __u32 BaudRate;
+ __u16 Divisor;
+};
+
+//
+// Define table of divisors for Rev A EdgePort/4 hardware
+// These assume a 3.6864MHz crystal, the standard /16, and
+// MCR.7 = 0.
+//
+static struct divisor_table_entry divisor_table[] = {
+ { 50, 4608},
+ { 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 debug;
+
+static int low_latency = 1; /* tty low latency flag, on by default */
+
+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, struct pt_regs *regs);
+static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs);
+static void edge_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs);
+static void edge_bulk_out_cmd_callback (struct urb *urb, struct pt_regs *regs);
+
+/* 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, 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_tiocmget (struct usb_serial_port *port, struct file *file);
+static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear);
+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 */
+
+static struct usb_driver io_driver = {
+ .owner = THIS_MODULE,
+ .name = "io_edgeport",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .id_table = id_table_combined,
+};
+
+/* function prototypes for all of our local functions */
+static void 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 edge_tty_recv (struct device *dev, struct tty_struct *tty, unsigned char *data, int length);
+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, __le16 *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;
+ __le16 BootBuildNumber;
+ __u8 *BootImage;
+ __u32 BootSize;
+ struct edge_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 = cpu_to_le16(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 = cpu_to_le16(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) +
+ le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
+
+ BootNewVer = (BootMajorVersion << 24) +
+ (BootMinorVersion << 16) +
+ le16_to_cpu(BootBuildNumber);
+
+ dbg("Current Boot Image version %d.%d.%d",
+ edge_serial->boot_descriptor.MajorVersion,
+ edge_serial->boot_descriptor.MinorVersion,
+ le16_to_cpu(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,
+ le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
+ BootMajorVersion,
+ BootMinorVersion,
+ le16_to_cpu(BootBuildNumber));
+
+
+ dbg("Downloading new Boot Image");
+
+ firmware = BootImage;
+
+ for (;;) {
+ record = (struct edge_firmware_image_record *)firmware;
+ response = rom_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
+ if (response < 0) {
+ dev_err(&edge_serial->serial->dev->dev, "rom_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len));
+ break;
+ }
+ firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(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("%s - USB String ID = %d", __FUNCTION__, 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("%s - USB String ID = %d", __FUNCTION__, 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)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
+ 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 (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ION_DEVICE_ID_80251_NETCHIP) {
+ product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN2.MajorVersion;
+ product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN2.MinorVersion;
+ product_info->FirmwareBuildNumber = cpu_to_le16(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 = cpu_to_le16(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,
+ le16_to_cpu(product_info->BootBuildNumber));
+ dbg(" FirmwareMajorVersion %d.%d.%d", product_info->FirmwareMajorVersion,
+ product_info->FirmwareMinorVersion,
+ le16_to_cpu(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 pt_regs *regs)
+{
+ 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("%s", __FUNCTION__);
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
+ return;
+ default:
+ dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
+ goto exit;
+ }
+
+ // process this interrupt-read even if there are no ports open
+ if (length) {
+ usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data);
+
+ if (length > 1) {
+ bytes_avail = data[0] | (data[1] << 8);
+ if (bytes_avail) {
+ spin_lock(&edge_serial->es_lock);
+ edge_serial->rxBytesAvail += bytes_avail;
+ dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __FUNCTION__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress);
+
+ if (edge_serial->rxBytesAvail > 0 &&
+ !edge_serial->read_in_progress) {
+ dbg("%s - posting a read", __FUNCTION__);
+ edge_serial->read_in_progress = TRUE;
+
+ /* 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, GFP_ATOMIC);
+ if (result) {
+ dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __FUNCTION__, result);
+ edge_serial->read_in_progress = FALSE;
+ }
+ }
+ spin_unlock(&edge_serial->es_lock);
+ }
+ }
+ /* 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];
+ edge_port = usb_get_serial_port_data(port);
+ if (edge_port->open) {
+ spin_lock(&edge_port->ep_lock);
+ edge_port->txCredits += txCredits;
+ spin_unlock(&edge_port->ep_lock);
+ dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits);
+
+ /* tell the tty driver that something has changed */
+ if (edge_port->port->tty)
+ tty_wakeup(edge_port->port->tty);
+
+ // Since we have more credit, check if more data can be sent
+ send_more_port_data(edge_serial, edge_port);
+ }
+ }
+ position += 2;
+ ++portNumber;
+ }
+ }
+
+exit:
+ result = usb_submit_urb (urb, GFP_ATOMIC);
+ if (result) {
+ dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, result);
+ }
+}
+
+
+/*****************************************************************************
+ * 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 pt_regs *regs)
+{
+ struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
+ unsigned char *data = urb->transfer_buffer;
+ int status;
+ __u16 raw_data_length;
+
+ dbg("%s", __FUNCTION__);
+
+ if (urb->status) {
+ dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
+ edge_serial->read_in_progress = FALSE;
+ return;
+ }
+
+ if (urb->actual_length == 0) {
+ dbg("%s - read bulk callback with no data", __FUNCTION__);
+ edge_serial->read_in_progress = FALSE;
+ return;
+ }
+
+ raw_data_length = urb->actual_length;
+
+ usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, raw_data_length, data);
+
+ spin_lock(&edge_serial->es_lock);
+
+ /* decrement our rxBytes available by the number that we just got */
+ edge_serial->rxBytesAvail -= raw_data_length;
+
+ dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__, 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) {
+ dbg("%s - posting a read", __FUNCTION__);
+ edge_serial->read_urb->dev = edge_serial->serial->dev;
+ status = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
+ if (status) {
+ dev_err(&urb->dev->dev, "%s - usb_submit_urb(read bulk) failed, status = %d\n", __FUNCTION__, status);
+ edge_serial->read_in_progress = FALSE;
+ }
+ } else {
+ edge_serial->read_in_progress = FALSE;
+ }
+
+ spin_unlock(&edge_serial->es_lock);
+}
+
+
+/*****************************************************************************
+ * 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 pt_regs *regs)
+{
+ struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
+ struct tty_struct *tty;
+
+ dbg("%s", __FUNCTION__);
+
+ if (urb->status) {
+ dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
+ }
+
+ tty = edge_port->port->tty;
+
+ if (tty && edge_port->open) {
+ /* let the tty driver wakeup if it has a special write_wakeup function */
+ tty_wakeup(tty);
+ }
+
+ // 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 *)(usb_get_serial_data(edge_port->port->serial)), 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 pt_regs *regs)
+{
+ struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
+ struct tty_struct *tty;
+ int status = urb->status;
+
+ dbg("%s", __FUNCTION__);
+
+ CmdUrbs--;
+ dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
+
+
+ /* clean up the transfer buffer */
+ if (urb->transfer_buffer != NULL) {
+ kfree(urb->transfer_buffer);
+ }
+
+ /* Free the command urb */
+ usb_free_urb (urb);
+
+ if (status) {
+ dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, status);
+ return;
+ }
+
+ /* Get pointer to tty */
+ tty = edge_port->port->tty;
+
+ /* tell the tty driver that something has changed */
+ if (tty && edge_port->open)
+ tty_wakeup(tty);
+
+ /* we have completed the command */
+ edge_port->commandPending = FALSE;
+ wake_up(&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 = usb_get_serial_port_data(port);
+ struct usb_serial *serial;
+ struct edgeport_serial *edge_serial;
+ int response;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (edge_port == NULL)
+ return -ENODEV;
+
+ if (port->tty)
+ port->tty->low_latency = low_latency;
+
+ /* 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 = usb_get_serial_data(serial);
+ if (edge_serial == NULL) {
+ 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 */
+ usb_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 */
+ usb_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);
+ edge_serial->read_in_progress = FALSE;
+
+ /* 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, GFP_KERNEL);
+ if (response) {
+ dev_err(&port->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, 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) {
+ dev_err(&port->dev, "%s - error sending open port command\n", __FUNCTION__);
+ edge_port->openPending = FALSE;
+ return -ENODEV;
+ }
+
+ /* now wait for the port to be completely opened */
+ wait_event_timeout(edge_port->wait_open, (edge_port->openPending != TRUE), OPEN_TIMEOUT);
+
+ if (edge_port->open == FALSE) {
+ /* open timed out */
+ dbg("%s - open timedout", __FUNCTION__);
+ edge_port->openPending = FALSE;
+ 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("%s - no memory", __FUNCTION__);
+ edge_close (port, filp);
+ return -ENOMEM;
+ }
+
+ /* Allocate a URB for the write */
+ edge_port->write_urb = usb_alloc_urb (0, GFP_KERNEL);
+ edge_port->write_in_progress = FALSE;
+
+ if (!edge_port->write_urb) {
+ dbg("%s - no memory", __FUNCTION__);
+ edge_close (port, filp);
+ return -ENOMEM;
+ }
+
+ dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits);
+
+ dbg("%s exited", __FUNCTION__);
+
+ 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)
+{
+ DEFINE_WAIT(wait);
+ __u16 lastCredits;
+ int timeout = 1*HZ;
+ int loop = 10;
+
+ while (1) {
+ // Save Last credits
+ lastCredits = edge_port->txCredits;
+
+ // Did we get our Chase response
+ if (edge_port->chaseResponsePending == FALSE) {
+ dbg("%s - Got Chase Response", __FUNCTION__);
+
+ // did we get all of our credit back?
+ if (edge_port->txCredits == edge_port->maxTxCredits ) {
+ dbg("%s - Got all credits", __FUNCTION__);
+ return;
+ }
+ }
+
+ // Block the thread for a while
+ prepare_to_wait(&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE);
+ schedule_timeout(timeout);
+ finish_wait(&edge_port->wait_chase, &wait);
+
+ if (lastCredits == edge_port->txCredits) {
+ // No activity.. count down.
+ loop--;
+ if (loop == 0) {
+ edge_port->chaseResponsePending = FALSE;
+ dbg("%s - Chase TIMEOUT", __FUNCTION__);
+ return;
+ }
+ } else {
+ // Reset timout value back to 10 seconds
+ dbg("%s - Last %d, Current %d", __FUNCTION__, lastCredits, edge_port->txCredits);
+ loop = 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)
+{
+ DEFINE_WAIT(wait);
+ struct TxFifo *fifo = &edge_port->txfifo;
+ __u32 lastCount;
+ int timeout = HZ/10;
+ int loop = 30;
+
+ while (1) {
+ // Save Last count
+ lastCount = fifo->count;
+
+ // Is the Edgeport Buffer empty?
+ if (lastCount == 0) {
+ dbg("%s - TX Buffer Empty", __FUNCTION__);
+ return;
+ }
+
+ // Block the thread for a while
+ prepare_to_wait (&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE);
+ schedule_timeout(timeout);
+ finish_wait(&edge_port->wait_chase, &wait);
+
+ dbg("%s wait", __FUNCTION__);
+
+ if (lastCount == fifo->count) {
+ // No activity.. count down.
+ loop--;
+ if (loop == 0) {
+ dbg("%s - TIMEOUT", __FUNCTION__);
+ return;
+ }
+ } else {
+ // Reset timout value back to seconds
+ loop = 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 edgeport_serial *edge_serial;
+ struct edgeport_port *edge_port;
+ int status;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ edge_serial = usb_get_serial_data(port->serial);
+ edge_port = usb_get_serial_port_data(port);
+ if ((edge_serial == NULL) || (edge_port == NULL))
+ return;
+
+ // block until tx is empty
+ block_until_tx_empty(edge_port);
+
+ edge_port->closePending = TRUE;
+
+ /* flush and chase */
+ edge_port->chaseResponsePending = TRUE;
+
+ dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
+ 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("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__);
+ 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_kill_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);
+ edge_port->write_urb = NULL;
+ }
+ if (edge_port->txfifo.fifo) {
+ kfree(edge_port->txfifo.fifo);
+ edge_port->txfifo.fifo = NULL;
+ }
+
+ dbg("%s exited", __FUNCTION__);
+}
+
+/*****************************************************************************
+ * 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, const unsigned char *data, int count)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ struct TxFifo *fifo;
+ int copySize;
+ int bytesleft;
+ int firsthalf;
+ int secondhalf;
+ unsigned long flags;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (edge_port == NULL)
+ return -ENODEV;
+
+ // get a pointer to the Tx fifo
+ fifo = &edge_port->txfifo;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+
+ // calculate number of bytes to put in fifo
+ copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count));
+
+ dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __FUNCTION__,
+ 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("%s - copySize = Zero", __FUNCTION__);
+ goto finish_write;
+ }
+
+ // 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("%s - copy %d bytes of %d into fifo ", __FUNCTION__, firsthalf, bytesleft);
+
+ /* now copy our data */
+ memcpy(&fifo->fifo[fifo->head], data, firsthalf);
+ usb_serial_debug_data(debug, &port->dev, __FUNCTION__, firsthalf, &fifo->fifo[fifo->head]);
+
+ // 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("%s - copy rest of data %d", __FUNCTION__, secondhalf);
+ memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
+ usb_serial_debug_data(debug, &port->dev, __FUNCTION__, secondhalf, &fifo->fifo[fifo->head]);
+ // 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
+ }
+
+finish_write:
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ send_more_port_data((struct edgeport_serial *)usb_get_serial_data(port->serial), edge_port);
+
+ dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, 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;
+ unsigned long flags;
+
+ dbg("%s(%d)", __FUNCTION__, edge_port->port->number);
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+
+ if (edge_port->write_in_progress ||
+ !edge_port->open ||
+ (fifo->count == 0)) {
+ dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->write_in_progress);
+ goto exit_send;
+ }
+
+ // 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,EDGE_FW_BULK_MAX_PACKET_SIZE)) {
+ dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->txCredits );
+ goto exit_send;
+ }
+
+ // 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_ATOMIC);
+ if (buffer == NULL) {
+ dev_err(&edge_port->port->dev, "%s - no more kernel memory...\n", __FUNCTION__);
+ edge_port->write_in_progress = FALSE;
+ goto exit_send;
+ }
+ buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count);
+ buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, 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(debug, &edge_port->port->dev, __FUNCTION__, count, &buffer[2]);
+
+ /* fill up the urb with all of our data and submit it */
+ usb_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);
+
+ /* decrement the number of credits we have by the number we just sent */
+ edge_port->txCredits -= count;
+ edge_port->icount.tx += count;
+
+ urb->dev = edge_serial->serial->dev;
+ status = usb_submit_urb(urb, GFP_ATOMIC);
+ if (status) {
+ /* something went wrong */
+ dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __FUNCTION__, status);
+ edge_port->write_in_progress = FALSE;
+
+ /* revert the credits as something bad happened. */
+ edge_port->txCredits += count;
+ edge_port->icount.tx -= count;
+ }
+ dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, count, edge_port->txCredits, fifo->count);
+
+exit_send:
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+}
+
+
+/*****************************************************************************
+ * 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 = usb_get_serial_port_data(port);
+ int room;
+ unsigned long flags;
+
+ dbg("%s", __FUNCTION__);
+
+ if (edge_port == NULL)
+ return -ENODEV;
+ if (edge_port->closePending == TRUE)
+ return -ENODEV;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (!edge_port->open) {
+ dbg("%s - port not opened", __FUNCTION__);
+ return -EINVAL;
+ }
+
+ // total of both buffers is still txCredit
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ room = edge_port->txCredits - edge_port->txfifo.count;
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ dbg("%s - returns %d", __FUNCTION__, 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 = usb_get_serial_port_data(port);
+ int num_chars;
+ unsigned long flags;
+
+ dbg("%s", __FUNCTION__);
+
+ if (edge_port == NULL)
+ return -ENODEV;
+ if (edge_port->closePending == TRUE)
+ return -ENODEV;
+
+ if (!edge_port->open) {
+ dbg("%s - port not opened", __FUNCTION__);
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count;
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+ if (num_chars) {
+ dbg("%s(port %d) - returns %d", __FUNCTION__, 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 = usb_get_serial_port_data(port);
+ struct tty_struct *tty;
+ int status;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (edge_port == NULL)
+ return;
+
+ if (!edge_port->open) {
+ dbg("%s - port not opened", __FUNCTION__);
+ return;
+ }
+
+ tty = port->tty;
+ if (!tty) {
+ dbg ("%s - no tty available", __FUNCTION__);
+ return;
+ }
+
+ /* if we are implementing XON/XOFF, send the stop character */
+ if (I_IXOFF(tty)) {
+ unsigned char stop_char = STOP_CHAR(tty);
+ status = edge_write (port, &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 = usb_get_serial_port_data(port);
+ struct tty_struct *tty;
+ int status;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (edge_port == NULL)
+ return;
+
+ if (!edge_port->open) {
+ dbg("%s - port not opened", __FUNCTION__);
+ return;
+ }
+
+ tty = port->tty;
+ if (!tty) {
+ dbg ("%s - no tty available", __FUNCTION__);
+ return;
+ }
+
+ /* if we are implementing XON/XOFF, send the start character */
+ if (I_IXOFF(tty)) {
+ unsigned char start_char = START_CHAR(tty);
+ status = edge_write (port, &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 = usb_get_serial_port_data(port);
+ struct tty_struct *tty = port->tty;
+ unsigned int cflag;
+
+ if (!port->tty || !port->tty->termios) {
+ dbg ("%s - no tty or termios", __FUNCTION__);
+ return;
+ }
+
+ cflag = tty->termios->c_cflag;
+ /* check that they really want us to change something */
+ if (old_termios) {
+ if (cflag == old_termios->c_cflag &&
+ tty->termios->c_iflag == old_termios->c_iflag) {
+ dbg("%s - nothing to change", __FUNCTION__);
+ return;
+ }
+ }
+
+ dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
+ tty->termios->c_cflag, tty->termios->c_iflag);
+ if (old_termios) {
+ dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
+ old_termios->c_cflag, old_termios->c_iflag);
+ }
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (edge_port == NULL)
+ return;
+
+ if (!edge_port->open) {
+ dbg("%s - port not opened", __FUNCTION__);
+ 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 __user *value)
+{
+ unsigned int result = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ if (edge_port->maxTxCredits == edge_port->txCredits &&
+ edge_port->txfifo.count == 0) {
+ dbg("%s -- Empty", __FUNCTION__);
+ result = TIOCSER_TEMT;
+ }
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ 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 __user *value)
+{
+ unsigned int result = 0;
+ struct tty_struct *tty = edge_port->port->tty;
+
+ if (!tty)
+ return -ENOIOCTLCMD;
+
+ result = tty->read_cnt;
+
+ dbg("%s(%d) = %d", __FUNCTION__, edge_port->port->number, result);
+ if (copy_to_user(value, &result, sizeof(int)))
+ return -EFAULT;
+ //return 0;
+ return -ENOIOCTLCMD;
+}
+
+static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ unsigned int mcr;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ mcr = edge_port->shadowMCR;
+ if (set & TIOCM_RTS)
+ mcr |= MCR_RTS;
+ if (set & TIOCM_DTR)
+ mcr |= MCR_DTR;
+ if (set & TIOCM_LOOP)
+ mcr |= MCR_LOOPBACK;
+
+ if (clear & TIOCM_RTS)
+ mcr &= ~MCR_RTS;
+ if (clear & TIOCM_DTR)
+ mcr &= ~MCR_DTR;
+ if (clear & TIOCM_LOOP)
+ mcr &= ~MCR_LOOPBACK;
+
+ edge_port->shadowMCR = mcr;
+
+ send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
+
+ return 0;
+}
+
+static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ unsigned int result = 0;
+ unsigned int msr;
+ unsigned int mcr;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ msr = edge_port->shadowMSR;
+ mcr = edge_port->shadowMCR;
+ result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
+ | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
+ | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
+ | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
+ | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
+ | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
+
+
+ dbg("%s -- %x", __FUNCTION__, result);
+
+ return result;
+}
+
+static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *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)
+{
+ DEFINE_WAIT(wait);
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ struct async_icount cnow;
+ struct async_icount cprev;
+ struct serial_icounter_struct icount;
+
+ dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
+
+ switch (cmd) {
+ // return number of bytes available
+ case TIOCINQ:
+ dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number);
+ return get_number_bytes_avail(edge_port, (unsigned int __user *) arg);
+ break;
+
+ case TIOCSERGETLSR:
+ dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
+ return get_lsr_info(edge_port, (unsigned int __user *) arg);
+ return 0;
+
+ case TIOCGSERIAL:
+ dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number);
+ return get_serial_info(edge_port, (struct serial_struct __user *) arg);
+
+ case TIOCSSERIAL:
+ dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number);
+ break;
+
+ case TIOCMIWAIT:
+ dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number);
+ cprev = edge_port->icount;
+ while (1) {
+ prepare_to_wait(&edge_port->delta_msr_wait, &wait, TASK_INTERRUPTIBLE);
+ schedule();
+ finish_wait(&edge_port->delta_msr_wait, &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;
+ memset(&icount, 0, sizeof(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("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, port->number, icount.rx, icount.tx );
+ if (copy_to_user((void __user *)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 = usb_get_serial_port_data(port);
+ int status;
+
+ /* flush and chase */
+ edge_port->chaseResponsePending = TRUE;
+
+ dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
+ 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("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__);
+ status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0);
+ } else {
+ dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__);
+ status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0);
+ }
+ if (status) {
+ dbg("%s - error sending break set/clear command.", __FUNCTION__);
+ }
+
+ return;
+}
+
+
+/*****************************************************************************
+ * process_rcvd_data
+ * this function handles the data received on the bulk in pipe.
+ *****************************************************************************/
+static void 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;
+
+ dbg("%s", __FUNCTION__);
+
+ lastBufferLength = bufferLength + 1;
+
+ while (bufferLength > 0) {
+ /* failsafe incase we get a message that we don't understand */
+ if (lastBufferLength == bufferLength) {
+ dbg("%s - stuck in loop, exiting it.", __FUNCTION__);
+ 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("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__, 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("%s - Data for Port %u Len %u", __FUNCTION__, 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];
+ edge_port = usb_get_serial_port_data(port);
+ if (edge_port->open) {
+ tty = edge_port->port->tty;
+ if (tty) {
+ dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__, rxLen, edge_serial->rxPort);
+ edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen);
+ }
+ 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;
+
+ }
+ }
+}
+
+
+/*****************************************************************************
+ * 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];
+ edge_port = usb_get_serial_port_data(port);
+ if (edge_port == NULL) {
+ dev_err(&edge_serial->serial->dev->dev, "%s - edge_port == NULL for port %d\n", __FUNCTION__, edge_serial->rxPort);
+ return;
+ }
+
+ dbg("%s - port %d", __FUNCTION__, 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("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__, 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 (&edge_port->wait_chase);
+ return;
+
+ case IOSP_EXT_STATUS_RX_CHECK_RSP:
+ dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, 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("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__, 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 */
+ if (edge_port->port->tty)
+ 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(&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("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
+ handle_new_lsr (edge_port, FALSE, byte2, 0);
+ break;
+
+ case IOSP_STATUS_LSR_DATA:
+ dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, 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("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
+ // break;
+ //
+ case IOSP_STATUS_MSR:
+ dbg("%s - Port %u MSR Status = %02x", __FUNCTION__, 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("%s - Unrecognized IOSP status code %u\n", __FUNCTION__, code);
+ break;
+ }
+
+ return;
+}
+
+
+/*****************************************************************************
+ * edge_tty_recv
+ * this function passes data on to the tty flip buffer
+ *****************************************************************************/
+static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length)
+{
+ int cnt;
+
+ do {
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ tty_flip_buffer_push(tty);
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ dev_err(dev, "%s - dropping data, %d bytes lost\n",
+ __FUNCTION__, length);
+ return;
+ }
+ }
+ cnt = min(length, TTY_FLIPBUF_SIZE - tty->flip.count);
+ memcpy(tty->flip.char_buf_ptr, data, cnt);
+ memset(tty->flip.flag_buf_ptr, 0, cnt);
+ tty->flip.char_buf_ptr += cnt;
+ tty->flip.flag_buf_ptr += cnt;
+ tty->flip.count += cnt;
+ data += cnt;
+ length -= cnt;
+ } while (length > 0);
+
+ tty_flip_buffer_push(tty);
+}
+
+
+/*****************************************************************************
+ * 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("%s %02x", __FUNCTION__, newMsr);
+
+ if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
+ icount = &edge_port->icount;
+
+ /* update input line counters */
+ if (newMsr & EDGEPORT_MSR_DELTA_CTS) {
+ icount->cts++;
+ }
+ if (newMsr & EDGEPORT_MSR_DELTA_DSR) {
+ icount->dsr++;
+ }
+ if (newMsr & EDGEPORT_MSR_DELTA_CD) {
+ icount->dcd++;
+ }
+ if (newMsr & EDGEPORT_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("%s - %02x", __FUNCTION__, 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 && edge_port->port->tty)
+ edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1);
+
+ /* 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("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
+
+ transfer_buffer = kmalloc (64, GFP_KERNEL);
+ if (!transfer_buffer) {
+ dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 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("%s - writing %x, %x, %d", __FUNCTION__, 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("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
+
+ transfer_buffer = kmalloc (64, GFP_KERNEL);
+ if (!transfer_buffer) {
+ dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 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("%s - writing %x, %x, %d", __FUNCTION__, 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("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
+
+ transfer_buffer = kmalloc (64, GFP_KERNEL);
+ if (!transfer_buffer) {
+ dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 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("%s - %x, %x, %d", __FUNCTION__, 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("%s - %d, %d", __FUNCTION__, command, param);
+
+ buffer = kmalloc (10, GFP_ATOMIC);
+ if (!buffer) {
+ dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 10);
+ return -ENOMEM;
+ }
+
+ currentCommand = buffer;
+
+ MAKE_CMD_EXT_CMD (¤tCommand, &length,
+ edge_port->port->number - edge_port->port->serial->minor,
+ 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 = usb_get_serial_data(edge_port->port->serial);
+ int status = 0;
+ struct urb *urb;
+ int timeout;
+
+ usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, length, buffer);
+
+ /* Allocate our next urb */
+ urb = usb_alloc_urb (0, GFP_ATOMIC);
+ if (!urb)
+ return -ENOMEM;
+
+ CmdUrbs++;
+ dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
+
+ usb_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);
+
+ edge_port->commandPending = TRUE;
+ status = usb_submit_urb(urb, GFP_ATOMIC);
+
+ if (status) {
+ /* something went wrong */
+ dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write command) failed, status = %d\n", __FUNCTION__, status);
+ usb_kill_urb(urb);
+ usb_free_urb(urb);
+ CmdUrbs--;
+ return status;
+ }
+
+ // wait for command to finish
+ timeout = COMMAND_TIMEOUT;
+#if 0
+ wait_event (&edge_port->wait_command, (edge_port->commandPending == FALSE));
+
+ if (edge_port->commandPending == TRUE) {
+ /* command timed out */
+ dbg("%s - command timed out", __FUNCTION__);
+ 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 - edge_port->port->serial->minor;
+
+ dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate);
+
+ status = calc_baud_rate_divisor (baudRate, &divisor);
+ if (status) {
+ dev_err(&edge_port->port->dev, "%s - bad baud rate\n", __FUNCTION__);
+ return status;
+ }
+
+ // Alloc memory for the string of commands.
+ cmdBuffer = kmalloc (0x100, GFP_ATOMIC);
+ if (!cmdBuffer) {
+ dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 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;
+
+
+ dbg("%s - %d", __FUNCTION__, baudrate);
+
+ for (i = 0; i < NUM_ENTRIES(divisor_table); i++) {
+ if ( divisor_table[i].BaudRate == baudrate ) {
+ *divisor = divisor_table[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 > 50 && baudrate < 230400) {
+ // get divisor
+ custom = (__u16)((230400L + baudrate/2) / baudrate);
+
+ *divisor = custom;
+
+ dbg("%s - Baud %d = %d\n", __FUNCTION__, 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("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __FUNCTION__, regValue);
+
+ // Alloc memory for the string of commands.
+ cmdBuffer = kmalloc (0x10, GFP_ATOMIC);
+ 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 - edge_port->port->serial->minor,
+ 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.
+ *****************************************************************************/
+#ifndef CMSPAR
+#define CMSPAR 0
+#endif
+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("%s - port %d", __FUNCTION__, edge_port->port->number);
+
+ if ((!edge_port->open) &&
+ (!edge_port->openPending)) {
+ dbg("%s - port not opened", __FUNCTION__);
+ return;
+ }
+
+ tty = edge_port->port->tty;
+ if ((!tty) ||
+ (!tty->termios)) {
+ dbg("%s - no tty structures", __FUNCTION__);
+ return;
+ }
+
+ cflag = tty->termios->c_cflag;
+
+ switch (cflag & CSIZE) {
+ case CS5: lData = LCR_BITS_5; mask = 0x1f; dbg("%s - data bits = 5", __FUNCTION__); break;
+ case CS6: lData = LCR_BITS_6; mask = 0x3f; dbg("%s - data bits = 6", __FUNCTION__); break;
+ case CS7: lData = LCR_BITS_7; mask = 0x7f; dbg("%s - data bits = 7", __FUNCTION__); break;
+ default:
+ case CS8: lData = LCR_BITS_8; dbg("%s - data bits = 8", __FUNCTION__); break;
+ }
+
+ lParity = LCR_PAR_NONE;
+ if (cflag & PARENB) {
+ if (cflag & CMSPAR) {
+ if (cflag & PARODD) {
+ lParity = LCR_PAR_MARK;
+ dbg("%s - parity = mark", __FUNCTION__);
+ } else {
+ lParity = LCR_PAR_SPACE;
+ dbg("%s - parity = space", __FUNCTION__);
+ }
+ } else if (cflag & PARODD) {
+ lParity = LCR_PAR_ODD;
+ dbg("%s - parity = odd", __FUNCTION__);
+ } else {
+ lParity = LCR_PAR_EVEN;
+ dbg("%s - parity = even", __FUNCTION__);
+ }
+ } else {
+ dbg("%s - parity = none", __FUNCTION__);
+ }
+
+ if (cflag & CSTOPB) {
+ lStop = LCR_STOP_2;
+ dbg("%s - stop bits = 2", __FUNCTION__);
+ } else {
+ lStop = LCR_STOP_1;
+ dbg("%s - stop bits = 1", __FUNCTION__);
+ }
+
+ /* figure out the flow control settings */
+ rxFlow = txFlow = 0x00;
+ if (cflag & CRTSCTS) {
+ rxFlow |= IOSP_RX_FLOW_RTS;
+ txFlow |= IOSP_TX_FLOW_CTS;
+ dbg("%s - RTS/CTS is enabled", __FUNCTION__);
+ } else {
+ dbg("%s - RTS/CTS is disabled", __FUNCTION__);
+ }
+
+ /* if we are implementing XON/XOFF, set the start and stop character in the device */
+ if (I_IXOFF(tty) || I_IXON(tty)) {
+ 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("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
+ } else {
+ dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
+ }
+
+ /* if we are implementing OUTBOUND XON/XOFF */
+ if (I_IXON(tty)) {
+ txFlow |= IOSP_TX_FLOW_XON_XOFF;
+ dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
+ } else {
+ dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
+ }
+ }
+
+ /* 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("%s - baud rate = %d", __FUNCTION__, 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...
+ * NOTE: expects the unicode in LE format
+ ****************************************************************************/
+static void unicode_to_ascii (char *string, __le16 *unicode, int unicode_size)
+{
+ int i;
+
+ if (unicode_size <= 0)
+ return;
+
+ for (i = 0; i < unicode_size; ++i)
+ string[i] = (char)(le16_to_cpu(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) {
+ dev_err(&edge_serial->serial->dev->dev, "error in getting manufacturer descriptor\n");
+ } 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) {
+ dev_err(&edge_serial->serial->dev->dev, "error in getting boot descriptor\n");
+ } else {
+ dbg("**Boot Descriptor:");
+ dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
+ dbg(" MajorVersion: %d", edge_serial->boot_descriptor.MajorVersion);
+ dbg(" MinorVersion: %d", edge_serial->boot_descriptor.MinorVersion);
+ dbg(" BuildNumber: %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
+ dbg(" Capabilities: 0x%x", le16_to_cpu(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)
+{
+ struct edge_firmware_image_record *record;
+ unsigned char *firmware;
+ unsigned char *FirmwareImage;
+ int ImageSize;
+ int response;
+
+
+ switch (edge_serial->product_info.iDownloadFile) {
+ case EDGE_DOWNLOAD_FILE_I930:
+ dbg("downloading firmware version (930) %d.%d.%d",
+ OperationalCodeImageVersion_GEN1.MajorVersion,
+ OperationalCodeImageVersion_GEN1.MinorVersion,
+ OperationalCodeImageVersion_GEN1.BuildNumber);
+ firmware = &OperationalCodeImage_GEN1[0];
+ FirmwareImage = &OperationalCodeImage_GEN1[0];
+ ImageSize = sizeof(OperationalCodeImage_GEN1);
+ break;
+
+ case EDGE_DOWNLOAD_FILE_80251:
+ dbg("downloading firmware version (80251) %d.%d.%d",
+ OperationalCodeImageVersion_GEN2.MajorVersion,
+ OperationalCodeImageVersion_GEN2.MinorVersion,
+ OperationalCodeImageVersion_GEN2.BuildNumber);
+ firmware = &OperationalCodeImage_GEN2[0];
+ FirmwareImage = &OperationalCodeImage_GEN2[0];
+ ImageSize = sizeof(OperationalCodeImage_GEN2);
+ break;
+
+ case EDGE_DOWNLOAD_FILE_NONE:
+ dbg ("No download file specified, skipping download\n");
+ return;
+
+ default:
+ return;
+ }
+
+
+ for (;;) {
+ record = (struct edge_firmware_image_record *)firmware;
+ response = sram_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
+ if (response < 0) {
+ dev_err(&edge_serial->serial->dev->dev, "sram_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len));
+ break;
+ }
+ firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(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) {
+ dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+ memset (edge_serial, 0, sizeof(struct edgeport_serial));
+ spin_lock_init(&edge_serial->es_lock);
+ edge_serial->serial = serial;
+ usb_set_serial_data(serial, 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]);
+
+ dev_info(&serial->dev->dev, "%s detected\n", 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("%s - Device Reported %d serial ports vs core "
+ "thinking we have %d ports, email greg@kroah.com this info.",
+ __FUNCTION__, edge_serial->product_info.NumPorts,
+ serial->num_ports);
+ }
+
+ dbg("%s - time 1 %ld", __FUNCTION__, jiffies);
+
+ /* now load the application firmware into this device */
+ load_application_firmware (edge_serial);
+
+ dbg("%s - time 2 %ld", __FUNCTION__, jiffies);
+
+ /* Check current Edgeport EEPROM and update if necessary */
+ update_edgeport_E2PROM (edge_serial);
+
+ dbg("%s - time 3 %ld", __FUNCTION__, 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) {
+ dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
+ usb_set_serial_data(serial, NULL);
+ kfree(edge_serial);
+ return -ENOMEM;
+ }
+ memset (edge_port, 0, sizeof(struct edgeport_port));
+ spin_lock_init(&edge_port->ep_lock);
+ edge_port->port = serial->port[i];
+ usb_set_serial_port_data(serial->port[i], 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("%s", __FUNCTION__);
+
+ /* stop reads and writes on all ports */
+ for (i=0; i < serial->num_ports; ++i) {
+ kfree (usb_get_serial_port_data(serial->port[i]));
+ usb_set_serial_port_data(serial->port[i], NULL);
+ }
+ kfree (usb_get_serial_data(serial));
+ usb_set_serial_data(serial, NULL);
+}
+
+
+/****************************************************************************
+ * edgeport_init
+ * This is called by the module subsystem, or on startup to initialize us
+ ****************************************************************************/
+static int __init edgeport_init(void)
+{
+ int retval;
+
+ retval = usb_serial_register(&edgeport_2port_device);
+ if (retval)
+ goto failed_2port_device_register;
+ retval = usb_serial_register(&edgeport_4port_device);
+ if (retval)
+ goto failed_4port_device_register;
+ retval = usb_serial_register(&edgeport_8port_device);
+ if (retval)
+ goto failed_8port_device_register;
+ retval = usb_register(&io_driver);
+ if (retval)
+ goto failed_usb_register;
+ info(DRIVER_DESC " " DRIVER_VERSION);
+ return 0;
+
+failed_usb_register:
+ usb_serial_deregister(&edgeport_8port_device);
+failed_8port_device_register:
+ usb_serial_deregister(&edgeport_4port_device);
+failed_4port_device_register:
+ usb_serial_deregister(&edgeport_2port_device);
+failed_2port_device_register:
+ return retval;
+}
+
+
+/****************************************************************************
+ * edgeport_exit
+ * Called when the driver is about to be unloaded.
+ ****************************************************************************/
+static void __exit edgeport_exit (void)
+{
+ usb_deregister (&io_driver);
+ 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_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
+
+module_param(low_latency, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(low_latency, "Low latency enabled or not");