diff options
Diffstat (limited to 'drivers/usb/serial/io_edgeport.c')
| -rw-r--r-- | drivers/usb/serial/io_edgeport.c | 3113 |
1 files changed, 3113 insertions, 0 deletions
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c new file mode 100644 index 00000000000..e35b5adcd5f --- /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"); |