diff options
author | Greg Kroah-Hartman <gregkh@suse.de> | 2009-03-23 16:43:59 -0700 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-04-03 14:54:27 -0700 |
commit | 5ca0121ff24d2efba208a0f6df2cb6e372170d1d (patch) | |
tree | e90a086ca42dd28ef653e2eeb9eb57689281cc57 /drivers/staging/serqt_usb | |
parent | 4e9bf410dc6006e95aba512272747bc8f30e7a20 (diff) |
Staging: add USB serial Quatech driver
Add support for all Quatech usb to serial devices.
Based on an original driver from Quatech.
Cleaned up and forward ported by me.
It's a mess, uses it's own tty layer interface, and the coding style is
horrible.
Cc: Tim Gobeli <tgobeli@quatech.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/serqt_usb')
-rw-r--r-- | drivers/staging/serqt_usb/Kconfig | 9 | ||||
-rw-r--r-- | drivers/staging/serqt_usb/Makefile | 1 | ||||
-rw-r--r-- | drivers/staging/serqt_usb/serqt_usb.c | 2983 |
3 files changed, 2993 insertions, 0 deletions
diff --git a/drivers/staging/serqt_usb/Kconfig b/drivers/staging/serqt_usb/Kconfig new file mode 100644 index 00000000000..cc1af5df40d --- /dev/null +++ b/drivers/staging/serqt_usb/Kconfig @@ -0,0 +1,9 @@ +config USB_SERIAL_QUATECH_ESU100 + tristate "USB Quatech ESU-100 8 Port Serial Driver" + depends on USB_SERIAL + help + Say Y here if you want to use the Quatech ESU-100 8 port usb to + serial adapter. + + To compile this driver as a module, choose M here: the + module will be called serqt_usb. diff --git a/drivers/staging/serqt_usb/Makefile b/drivers/staging/serqt_usb/Makefile new file mode 100644 index 00000000000..4fd1da275e8 --- /dev/null +++ b/drivers/staging/serqt_usb/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_USB_SERIAL_QUATECH_ESU100) += serqt_usb.o diff --git a/drivers/staging/serqt_usb/serqt_usb.c b/drivers/staging/serqt_usb/serqt_usb.c new file mode 100644 index 00000000000..7ababa0dfa7 --- /dev/null +++ b/drivers/staging/serqt_usb/serqt_usb.c @@ -0,0 +1,2983 @@ +/* + * This code was developed for the Quatech USB line for linux, it used + * much of the code developed by Greg Kroah-Hartman for USB serial devices + * + */ + +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/tty.h> +#include <linux/tty_flip.h> +#include <linux/module.h> +#include <linux/usb.h> +#include <linux/wait.h> +#include <linux/types.h> +#include <linux/version.h> + +#include <asm/uaccess.h> + +/* Use our own dbg macro */ +//#define DEBUG_ON +//#undef dbg +#ifdef DEBUG_ON + #define mydbg(const...) printk(const) +#else + #define mydbg(const...) +#endif + + +/* parity check flag */ +#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK)) + + +#define SERIAL_TTY_MAJOR 0 /* Nice legal number now */ +#define SERIAL_TTY_MINORS 255 /* loads of devices :) */ +#define MAX_NUM_PORTS 8 /* The maximum number of ports one device can grab at once */ +#define PREFUFF_LEVEL_CONSERVATIVE 128 +#define ATC_DISABLED 0x00 + +#define RR_BITS 0x03 //for clearing clock bits +#define DUPMODE_BITS 0xc0 + +#define RS232_MODE 0x00 +#define RTSCTS_TO_CONNECTOR 0x40 +#define CLKS_X4 0x02 /// + +#define LOOPMODE_BITS 0x41 //LOOP1 = b6, LOOP0 = b0 (PORT B) +#define ALL_LOOPBACK 0x01 +#define MODEM_CTRL 0x40 + + +#define THISCHAR data[i] +#define NEXTCHAR data[i + 1] +#define THIRDCHAR data[i + 2] +#define FOURTHCHAR data[i + 3] + +//************************************************* +// Useful defintions for port A, Port B and Port C +#define FULLPWRBIT 0x00000080 +#define NEXT_BOARD_POWER_BIT 0x00000004 + + +#define SERIAL_LSR_OE 0x02 +#define SERIAL_LSR_PE 0x04 +#define SERIAL_LSR_FE 0x08 +#define SERIAL_LSR_BI 0x10 + +#define SERIAL_LSR_TEMT 0x40 + +#define DIV_LATCH_LS 0x00 +#define XMT_HOLD_REGISTER 0x00 +#define XVR_BUFFER_REGISTER 0x00 +#define DIV_LATCH_MS 0x01 +#define FIFO_CONTROL_REGISTER 0x02 +#define LINE_CONTROL_REGISTER 0x03 +#define MODEM_CONTROL_REGISTER 0x04 +#define LINE_STATUS_REGISTER 0x05 +#define MODEM_STATUS_REGISTER 0x06 + + +#define SERIAL_MCR_DTR 0x01 +#define SERIAL_MCR_RTS 0x02 +#define SERIAL_MCR_LOOP 0x10 + +#define SERIAL_MSR_CTS 0x10 +#define SERIAL_MSR_CD 0x80 +#define SERIAL_MSR_RI 0x40 +#define SERIAL_MSR_DSR 0x20 +#define SERIAL_MSR_MASK 0xf0 + +#define SERIAL_8_DATA 0x03 +#define SERIAL_7_DATA 0x02 +#define SERIAL_6_DATA 0x01 +#define SERIAL_5_DATA 0x00 + +#define SERIAL_ODD_PARITY 0X08 +#define SERIAL_EVEN_PARITY 0X18 +#define SERIAL_TWO_STOPB 0x04 +#define SERIAL_ONE_STOPB 0x00 + +#define MAX_BAUD_RATE 460800 +#define MAX_BAUD_REMAINDER 4608 + + +#define QT_SET_GET_DEVICE 0xc2 +#define QT_OPEN_CLOSE_CHANNEL 0xca +#define QT_GET_SET_PREBUF_TRIG_LVL 0xcc +#define QT_SET_ATF 0xcd +#define QT_GET_SET_REGISTER 0xc0 +#define QT_GET_SET_UART 0xc1 +#define QT_HW_FLOW_CONTROL_MASK 0xc5 +#define QT_SW_FLOW_CONTROL_MASK 0xc6 +#define QT_SW_FLOW_CONTROL_DISABLE 0xc7 +#define QT_BREAK_CONTROL 0xc8 + +#define SERIALQT_PCI_IOC_MAGIC 'k' +#define SERIALQT_WRITE_QOPR _IOW(SERIALQT_PCI_IOC_MAGIC, 0, int) +#define SERIALQT_WRITE_QMCR _IOW(SERIALQT_PCI_IOC_MAGIC, 1, int) +#define SERIALQT_GET_NUMOF_UNITS _IOR(SERIALQT_PCI_IOC_MAGIC, 2, void *) +#define SERIALQT_GET_THIS_UNIT _IOR(SERIALQT_PCI_IOC_MAGIC, 3, void *) +#define SERIALQT_READ_QOPR _IOR(SERIALQT_PCI_IOC_MAGIC, 4, int) +#define SERIALQT_READ_QMCR _IOR(SERIALQT_PCI_IOC_MAGIC, 5, int) +#define SERIALQT_IS422_EXTENDED _IOR(SERIALQT_PCI_IOC_MAGIC, 6, int) //returns successful if 422 extended + + +#define USBD_TRANSFER_DIRECTION_IN 0xc0 +#define USBD_TRANSFER_DIRECTION_OUT 0x40 + +#define ATC_DISABLED 0x00 +#define ATC_RTS_ENABLED 0x02 +#define ATC_DTR_ENABLED 0x01 + +#define RR_BITS 0x03 //for clearing clock bits +#define DUPMODE_BITS 0xc0 + +#define FULL_DUPLEX 0x00 +#define HALF_DUPLEX_RTS 0x40 +#define HALF_DUPLEX_DTR 0x80 + +#define QMCR_FULL_DUPLEX 0x00 +#define QMCR_HALF_DUPLEX_RTS 0x02 +#define QMCR_HALF_DUPLEX_DTR 0x01 +#define QMCR_HALF_DUPLEX_MASK 0x03 +#define QMCR_CONNECTOR_MASK 0x1C + +#define QMCR_RX_EN_MASK 0x20 + +#define QMCR_ALL_LOOPBACK 0x10 +#define QMCR_MODEM_CONTROL 0X00 + + + +#define SERIALQT_IOC_MAXNR 6 + +struct usb_serial_port { + struct usb_serial *serial; /* pointer back to the owner of this port */ + struct tty_struct * tty; /* the coresponding tty for this port */ + unsigned char number; + char active; /* someone has this device open */ + + unsigned char * interrupt_in_buffer; + struct urb * interrupt_in_urb; + __u8 interrupt_in_endpointAddress; + + unsigned char * bulk_in_buffer; + unsigned char * xfer_to_tty_buffer; + struct urb * read_urb; + __u8 bulk_in_endpointAddress; + + unsigned char * bulk_out_buffer; + int bulk_out_size; + struct urb * write_urb; + __u8 bulk_out_endpointAddress; + + wait_queue_head_t write_wait; + wait_queue_head_t wait; + struct work_struct work; + + int open_count; /* number of times this port has been opened */ + struct semaphore sem; /* locks this structure */ + + __u8 shadowLCR; /* last LCR value received */ + __u8 shadowMCR; /* last MCR value received */ + __u8 shadowMSR; /* last MSR value received */ + __u8 shadowLSR; /* last LSR value received */ + int RxHolding; + char closePending; + int ReadBulkStopped; + + void * private; /* data private to the specific port */ +}; + +struct identity { + int index; + int n_identity; +}; + +struct usb_serial { + struct usb_device * dev; + struct usb_interface * interface; /* the interface for this device */ + struct tty_driver * tty_driver; /* the tty_driver for this device */ + unsigned char minor; /* the starting minor number for this device */ + unsigned char num_ports; /* the number of ports this device has */ + char num_interrupt_in; /* number of interrupt in endpoints we have */ + char num_bulk_in; /* number of bulk in endpoints we have */ + char num_bulk_out; /* number of bulk out endpoints we have */ + unsigned char num_OpenCount; /* the number of ports this device has */ + + + __u16 vendor; /* vendor id of this device */ + __u16 product; /* product id of this device */ + struct usb_serial_port port[MAX_NUM_PORTS]; + + void * private; /* data private to the specific driver */ +}; + + + +static inline int port_paranoia_check (struct usb_serial_port *port, const char *function) +{ + if (!port) { + dbg("%s - port == NULL", function); + return -1; + } + if (!port->serial) { + dbg("%s - port->serial == NULL\n", function); + return -1; + } + if (!port->tty) { + dbg("%s - port->tty == NULL\n", function); + return -1; + } + + return 0; +} + + +/* Inline functions to check the sanity of a pointer that is passed to us */ +static inline int serial_paranoia_check (struct usb_serial *serial, const char *function) +{ + if (!serial) { + dbg("%s - serial == NULL\n", function); + return -1; + } + + return 0; +} + + +static inline struct usb_serial* get_usb_serial (struct usb_serial_port *port, const char *function) +{ + /* if no port was specified, or it fails a paranoia check */ + if (!port || + port_paranoia_check (port, function) || + serial_paranoia_check (port->serial, function)) { + /* then say that we dont have a valid usb_serial thing, which will + * end up genrating -ENODEV return values */ + return NULL; + } + + return port->serial; +} + + +struct qt_get_device_data +{ + __u8 porta; + __u8 portb; + __u8 portc; +}; + +struct qt_open_channel_data +{ + __u8 line_status; + __u8 modem_status; +}; + +static void ProcessLineStatus(struct usb_serial_port *port, unsigned char line_status); +static void ProcessModemStatus(struct usb_serial_port *port, unsigned char modem_status); +static void ProcessRxChar(struct usb_serial_port *port, unsigned char Data); +static struct usb_serial *get_free_serial (int num_ports, int *minor); + + +static int serqt_probe(struct usb_interface *interface, + const struct usb_device_id *id); + + +static void serqt_usb_disconnect(struct usb_interface *interface); +static int box_set_device(struct usb_serial *serial, struct qt_get_device_data *pDeviceData); +static int box_get_device(struct usb_serial *serial, struct qt_get_device_data *pDeviceData); +static int serial_open (struct tty_struct *tty, struct file * filp); +static void serial_close(struct tty_struct *tty, struct file * filp); +static int serial_write_room (struct tty_struct *tty); +static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg); +static void serial_set_termios (struct tty_struct *tty, struct ktermios * old); +static int serial_write (struct tty_struct * tty, const unsigned char *buf, int count); + +static void serial_throttle (struct tty_struct * tty); +static void serial_unthrottle (struct tty_struct * tty); +static int serial_break (struct tty_struct *tty, int break_state); +static int serial_chars_in_buffer (struct tty_struct *tty); +static int serial_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data); + +static int qt_open (struct usb_serial_port *port, struct file *filp); +static int BoxSetPrebufferLevel(struct usb_serial *serial); + +static int BoxSetATC(struct usb_serial *serial, __u16 n_Mode); +static int BoxSetUart(struct usb_serial *serial, unsigned short Uart_Number, unsigned short default_divisor, unsigned char default_LCR ); + + +static int BoxOPenCloseChannel(struct usb_serial *serial, __u16 Uart_Number, __u16 OpenClose, struct qt_open_channel_data *pDeviceData); +static void qt_close (struct usb_serial_port *port, struct file * filp); +static int BoxGetRegister(struct usb_serial *serial, unsigned short Uart_Number,unsigned short Register_Num, __u8 *pValue); +static int BoxSetRegister(struct usb_serial *serial, unsigned short Uart_Number, unsigned short Register_Num, unsigned short Value ); +static void qt_write_bulk_callback(struct urb *urb); +static int qt_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count); +static void port_softint(struct work_struct *work); +static int qt_write_room (struct usb_serial_port *port); +static int qt_chars_in_buffer (struct usb_serial_port *port); +static int qt_ioctl(struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); +static void qt_set_termios(struct usb_serial_port *port, struct ktermios *old_termios); +static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int UartNumber, int bSet); +static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 UartNumber); +static int EmulateWriteQMCR_Reg(int index, unsigned uc_value); +static int EmulateReadQMCR_Reg(int index, unsigned *uc_value); +static struct usb_serial *find_the_box(unsigned int index); +int ioctl_serial_usb (struct inode *innod, struct file *filp, unsigned int cmd, unsigned long arg); + + +static int BoxSetSW_FlowCtrl(struct usb_serial *serial, __u16 Uart, unsigned char stop_char, unsigned char start_char); +static void qt_read_bulk_callback(struct urb *urb); + +static void port_sofrint(void *private); + +static void return_serial(struct usb_serial *serial); + + +static int serial_tiocmset (struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); +static int serial_tiocmget(struct tty_struct *tty, struct file *file); + + + +static int qt_tiocmset(struct usb_serial_port *port, struct file * file, unsigned int value); + +static int qt_tiocmget(struct usb_serial_port *port, struct file * file); + + + +/* Version Information */ +#define DRIVER_VERSION "v2.14" +#define DRIVER_AUTHOR "Tim Gobeli, Quatech, Inc" +#define DRIVER_DESC "Quatech USB to Serial Driver" + +#define USB_VENDOR_ID_QUATECH 0x061d // Quatech VID +#define DEVICE_ID_QUATECH_RS232_SINGLE_PORT 0xC020 //SSU100 +#define DEVICE_ID_QUATECH_RS422_SINGLE_PORT 0xC030 //SSU200 +#define DEVICE_ID_QUATECH_RS232_DUAL_PORT 0xC040 //DSU100 +#define DEVICE_ID_QUATECH_RS422_DUAL_PORT 0xC050 //DSU200 +#define DEVICE_ID_QUATECH_RS232_FOUR_PORT 0xC060 //QSU100 +#define DEVICE_ID_QUATECH_RS422_FOUR_PORT 0xC070 //QSU200 +#define DEVICE_ID_QUATECH_RS232_EIGHT_PORT_A 0xC080 //ESU100A +#define DEVICE_ID_QUATECH_RS232_EIGHT_PORT_B 0xC081 //ESU100B +#define DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A 0xC0A0 //ESU200A +#define DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B 0xC0A1 //ESU200B +#define DEVICE_ID_QUATECH_RS232_16_PORT_A 0xC090 //HSU100A +#define DEVICE_ID_QUATECH_RS232_16_PORT_B 0xC091 //HSU100B +#define DEVICE_ID_QUATECH_RS232_16_PORT_C 0xC092 //HSU100C +#define DEVICE_ID_QUATECH_RS232_16_PORT_D 0xC093 //HSU100D +#define DEVICE_ID_QUATECH_RS422_16_PORT_A 0xC0B0 //HSU200A +#define DEVICE_ID_QUATECH_RS422_16_PORT_B 0xC0B1 //HSU200B +#define DEVICE_ID_QUATECH_RS422_16_PORT_C 0xC0B2 //HSU200C +#define DEVICE_ID_QUATECH_RS422_16_PORT_D 0xC0B3 //HSU200D + + +/* table of Quatech devices */ +static struct usb_device_id serqt_table [] = { + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_SINGLE_PORT)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_SINGLE_PORT)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_DUAL_PORT)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_DUAL_PORT)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_FOUR_PORT)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_FOUR_PORT)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_EIGHT_PORT_A)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_EIGHT_PORT_B)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_A)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_B)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_C)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_D)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_A)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_B)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_C)}, + { USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_D)}, + {} /* Terminating entry */ +}; +MODULE_DEVICE_TABLE(usb, serqt_table); + +static int major_number; +static struct usb_serial *serial_table[SERIAL_TTY_MINORS]; /* initially all NULL */ + + +/* table of Quatech 422devices */ +static unsigned int serqt_422_table[] = { + DEVICE_ID_QUATECH_RS422_SINGLE_PORT, + DEVICE_ID_QUATECH_RS422_DUAL_PORT, + DEVICE_ID_QUATECH_RS422_FOUR_PORT, + DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A, + DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B, + DEVICE_ID_QUATECH_RS422_16_PORT_A, + DEVICE_ID_QUATECH_RS422_16_PORT_B, + DEVICE_ID_QUATECH_RS422_16_PORT_C, + DEVICE_ID_QUATECH_RS422_16_PORT_D, + 0 /* terminate with zero */ +}; + + + +/* usb specific object needed to register this driver with the usb subsystem */ +static struct usb_driver serqt_usb_driver = { + .name = "quatech-usb-serial", + .probe = serqt_probe, + .disconnect = serqt_usb_disconnect, + .id_table = serqt_table, +}; + +static struct ktermios *serial_termios[SERIAL_TTY_MINORS]; +static struct ktermios *serial_termios_locked[SERIAL_TTY_MINORS]; + +static const struct tty_operations serial_ops = { + .open = serial_open, + .close = serial_close, + .write = serial_write, + .write_room = serial_write_room, + .ioctl = serial_ioctl, + .set_termios = serial_set_termios, + .throttle = serial_throttle, + .unthrottle = serial_unthrottle, + .break_ctl = serial_break, + .chars_in_buffer = serial_chars_in_buffer, + .read_proc = serial_read_proc, + .tiocmset = serial_tiocmset, + .tiocmget = serial_tiocmget, +}; + +static struct tty_driver serial_tty_driver = { + .magic = TTY_DRIVER_MAGIC, + .driver_name = "Quatech usb-serial", + .name = "ttyQT_USB", + .major = SERIAL_TTY_MAJOR, + .minor_start = 0, + .num = SERIAL_TTY_MINORS, + .type = TTY_DRIVER_TYPE_SERIAL, + .subtype = SERIAL_TYPE_NORMAL, + .flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV, + + .termios = serial_termios, + .termios_locked = serial_termios_locked, + .init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL, + + .init_termios.c_iflag = ICRNL | IXON, + .init_termios.c_oflag = OPOST, + + .init_termios.c_lflag= ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOKE | IEXTEN, +}; + +//fops for parent device +static struct file_operations serialqt_usb_fops = { + .ioctl = ioctl_serial_usb, + +}; + + + /** + * serqt_probe + * + * Called by the usb core when a new device is connected that it thinks + * this driver might be interested in. + * + */ +static int serqt_probe(struct usb_interface *interface, + const struct usb_device_id *id) +{ + struct usb_device *dev = interface_to_usbdev(interface); + struct usb_serial *serial = NULL; + struct usb_serial_port *port; + struct usb_endpoint_descriptor *endpoint; + struct usb_endpoint_descriptor *interrupt_in_endpoint[MAX_NUM_PORTS]; + struct usb_endpoint_descriptor *bulk_in_endpoint[MAX_NUM_PORTS]; + struct usb_endpoint_descriptor *bulk_out_endpoint[MAX_NUM_PORTS]; + int minor; + int buffer_size; + int i; + struct usb_host_interface *iface_desc; + int num_interrupt_in = 0; + int num_bulk_in = 0; + int num_bulk_out = 0; + int num_ports; + struct qt_get_device_data DeviceData; + int status; + + mydbg("In %s\n", __FUNCTION__); + + /* let's find the endpoints needed */ + /* check out the endpoints */ + iface_desc = interface->cur_altsetting;; + for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) + { + endpoint = &iface_desc->endpoint[i].desc; + + if ((endpoint->bEndpointAddress & 0x80) && + ((endpoint->bmAttributes & 3) == 0x02)) + { + /* we found a bulk in endpoint */ + mydbg("found bulk in"); + bulk_in_endpoint[num_bulk_in] = endpoint; + ++num_bulk_in; + } + + if (((endpoint->bEndpointAddress & 0x80) == 0x00) && + ((endpoint->bmAttributes & 3) == 0x02)) + { + /* we found a bulk out endpoint */ + mydbg("found bulk out\n"); + bulk_out_endpoint[num_bulk_out] = endpoint; + ++num_bulk_out; + } + + if ((endpoint->bEndpointAddress & 0x80) && + ((endpoint->bmAttributes & 3) == 0x03)) + { + /* we found a interrupt in endpoint */ + mydbg("found interrupt in\n"); + interrupt_in_endpoint[num_interrupt_in] = endpoint; + ++num_interrupt_in; + } + } + + /* found all that we need */ + dev_info(&interface->dev, "Quatech converter detected\n"); + num_ports = num_bulk_out; + if (num_ports == 0) + { + err("Quatech device with no bulk out, not allowed."); + return -ENODEV; + + } + + serial = get_free_serial (num_ports, &minor); + if (serial == NULL) + { + err("No more free serial devices"); + return -ENODEV; + } + + serial->dev = dev; + serial->interface = interface; + serial->minor = minor; + serial->num_ports = num_ports; + serial->num_bulk_in = num_bulk_in; + serial->num_bulk_out = num_bulk_out; + serial->num_interrupt_in = num_interrupt_in; + serial->vendor = dev->descriptor.idVendor; + serial->product = dev->descriptor.idProduct; + + + /* set up the endpoint information */ + for (i = 0; i < num_bulk_in; ++i) + { + endpoint = bulk_in_endpoint[i]; + port = &serial->port[i]; + port->read_urb = usb_alloc_urb (0, GFP_KERNEL); + if (!port->read_urb) + { + err("No free urbs available"); + goto probe_error; + } + buffer_size = endpoint->wMaxPacketSize; + port->bulk_in_endpointAddress = endpoint->bEndpointAddress; + port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL); + port->xfer_to_tty_buffer = kmalloc (buffer_size, GFP_KERNEL); + if (!port->bulk_in_buffer) + { + err("Couldn't allocate bulk_in_buffer"); + goto probe_error; + } + usb_fill_bulk_urb (port->read_urb, dev, + usb_rcvbulkpipe (dev, + endpoint->bEndpointAddress), + port->bulk_in_buffer, buffer_size, + qt_read_bulk_callback, + port); + } + + for (i = 0; i < num_bulk_out; ++i) + { + endpoint = bulk_out_endpoint[i]; + port = &serial->port[i]; + port->write_urb = usb_alloc_urb (0, GFP_KERNEL); + if (!port->write_urb) + { + err("No free urbs available"); + goto probe_error; + } + buffer_size = endpoint->wMaxPacketSize; + port->bulk_out_size = buffer_size; + port->bulk_out_endpointAddress = endpoint->bEndpointAddress; + port->bulk_out_buffer = kmalloc (buffer_size, GFP_KERNEL); + if (!port->bulk_out_buffer) + { + err("Couldn't allocate bulk_out_buffer"); + goto probe_error; + } + usb_fill_bulk_urb (port->write_urb, dev, + usb_sndbulkpipe (dev, + endpoint->bEndpointAddress), + port->bulk_out_buffer, buffer_size, + qt_write_bulk_callback, + port); + + + } + + //For us numb of bulkin or out = number of ports + + mydbg("%s - setting up %d port structures for this device\n", __FUNCTION__, num_bulk_in); + for (i = 0; i < num_bulk_in; ++i) + { + port = &serial->port[i]; + port->number = i + serial->minor; + port->serial = serial; + + INIT_WORK(&port->work, port_softint); + + init_MUTEX (&port->sem); + + + + } + status = box_get_device(serial, &DeviceData); + if (status < 0) + { + mydbg(__FILE__"box_get_device failed"); + goto probe_error; + } + + mydbg(__FILE__"DeviceData.portb = 0x%x",DeviceData.portb); + + DeviceData.portb &= ~FULLPWRBIT; + mydbg(__FILE__"Changing DeviceData.portb to 0x%x",DeviceData.portb); + + status = box_set_device(serial, &DeviceData); + if (status < 0) + { + mydbg(__FILE__"box_set_device failed\n"); + goto probe_error; + } + + + + /* initialize the devfs nodes for this device and let the user know what ports we are bound to */ + for (i = 0; i < serial->num_ports; ++i) + { + dev_info(&interface->dev, "Converter now attached to ttyUSB%d (or usb/tts/%d for devfs)", + serial->port[i].number, serial->port[i].number); + } + + //usb_serial_console_init (debug, minor); + + ///***********TAG add start next board here ****/// + status = box_get_device(serial, &DeviceData); + if (status < 0) + { + mydbg(__FILE__"box_get_device failed"); + goto probe_error; + } + + //*****************and before we power up lets initialiaze parnent device stuff here before + //*****************we set thmem via any other method such as the property pages + switch (serial->product) + { + case DEVICE_ID_QUATECH_RS232_SINGLE_PORT: + case DEVICE_ID_QUATECH_RS232_DUAL_PORT: + case DEVICE_ID_QUATECH_RS232_FOUR_PORT: + case DEVICE_ID_QUATECH_RS232_EIGHT_PORT_A: + case DEVICE_ID_QUATECH_RS232_EIGHT_PORT_B: + case DEVICE_ID_QUATECH_RS232_16_PORT_A: + case DEVICE_ID_QUATECH_RS232_16_PORT_B: + case DEVICE_ID_QUATECH_RS232_16_PORT_C: + case DEVICE_ID_QUATECH_RS232_16_PORT_D: + DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS); + DeviceData.porta |= CLKS_X4; + DeviceData.portb &= ~(LOOPMODE_BITS); + DeviceData.portb |= RS232_MODE; + break; + + + case DEVICE_ID_QUATECH_RS422_SINGLE_PORT: + case DEVICE_ID_QUATECH_RS422_DUAL_PORT: + case DEVICE_ID_QUATECH_RS422_FOUR_PORT: + case DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A: + case DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B: + case DEVICE_ID_QUATECH_RS422_16_PORT_A: + case DEVICE_ID_QUATECH_RS422_16_PORT_B: + case DEVICE_ID_QUATECH_RS422_16_PORT_C: + case DEVICE_ID_QUATECH_RS422_16_PORT_D: + DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS); + DeviceData.porta |= CLKS_X4; + DeviceData.portb &= ~(LOOPMODE_BITS); + DeviceData.portb |= ALL_LOOPBACK; + break; + default: + DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS); + DeviceData.porta |= CLKS_X4; + DeviceData.portb &= ~(LOOPMODE_BITS); + DeviceData.portb |= RS232_MODE; + break; + + } + status = BoxSetPrebufferLevel(serial); //sets to default vaue + if (status < 0) + { + mydbg(__FILE__"BoxSetPrebufferLevel failed\n"); + goto probe_error; + } + + status = BoxSetATC(serial, ATC_DISABLED); + if (status < 0) + { + mydbg(__FILE__"BoxSetATC failed\n"); + goto probe_error; + } + //**************************************************************************** + mydbg(__FILE__"DeviceData.portb = 0x%x",DeviceData.portb); + + DeviceData.portb |= NEXT_BOARD_POWER_BIT; + mydbg(__FILE__"Changing DeviceData.portb to 0x%x",DeviceData.portb); + + status = box_set_device(serial, &DeviceData); + if (status < 0) + { + mydbg(__FILE__"box_set_device failed\n"); + goto probe_error; + } + + + mydbg("Exit Success %s\n", __FUNCTION__); + + usb_set_intfdata (interface, serial); + return 0; + + + + probe_error: + + for (i = 0; i < num_bulk_in; ++i) + { + port = &serial->port[i]; + if (port->read_urb) + usb_free_urb (port->read_urb); + if (port->bulk_in_buffer) + kfree (port->bulk_in_buffer); + } + for (i = 0; i < num_bulk_out; ++i) + { + port = &serial->port[i]; + if (port->write_urb) + usb_free_urb (port->write_urb); + if (port->bulk_out_buffer) + kfree (port->bulk_out_buffer); + + if (port->xfer_to_tty_buffer) + kfree (port->xfer_to_tty_buffer); + } + for (i = 0; i < num_interrupt_in; ++i) + { + port = &serial->port[i]; + if (port->interrupt_in_urb) + usb_free_urb (port->interrupt_in_urb); + if (port->interrupt_in_buffer) + kfree (port->interrupt_in_buffer); + } + + + /* return the minor range that this device had */ + return_serial (serial); + mydbg("Exit fail %s\n", __FUNCTION__); + + /* free up any memory that we allocated */ + kfree (serial); + return -EIO; +} + + + + + + +//returns the serial_table array pointers that are taken +//up in consecutive positions for each port to a common usb_serial structure +//back to NULL +static void return_serial(struct usb_serial *serial) +{ + int i; + + mydbg("%s\n", __FUNCTION__); + + if (serial == NULL) + return; + + for (i = 0; i < serial->num_ports; ++i) + { + serial_table[serial->minor + i] = NULL; + } + + return; +} + +//Finds the first locatio int the serial_table array where it can fit +//num_ports number of consecutive points to a common usb_serial structure +//,allocates a stucture points to it in all the structures, and returns the index +//to the first location in the array in the "minor" variable. + +static struct usb_serial *get_free_serial (int num_ports, int *minor) +{ + struct usb_serial *serial = NULL; + int i, j; + int good_spot; + + mydbg("%s %d\n", __FUNCTION__, num_ports); + + *minor = 0; + for (i = 0; i < SERIAL_TTY_MINORS; ++i) + { + if (serial_table[i]) + continue; + + good_spot = 1; + //find a spot in the array where you can fit consecutive positions + //to put the pointers to the usb_serail allocated structure for all + //the minor numbers (ie. ports) + for (j = 1; j <= num_ports-1; ++j) + if (serial_table[i+j]) + good_spot = 0; + if (good_spot == 0) + continue; + + if (!(serial = kmalloc(sizeof(struct usb_serial), GFP_KERNEL))) + { + err("%s - Out of memory", __FUNCTION__); + return NULL; + } + memset(serial, 0, sizeof(struct usb_serial)); + serial_table[i] = serial; + *minor = i; + mydbg("%s - minor base = %d\n", __FUNCTION__, *minor); + //copy in the pointer into the array starting a the *minor position + //*minor is the index into the array + for (i = *minor+1; (i < (*minor + num_ports)) && (i < SERIAL_TTY_MINORS); ++i) + serial_table[i] = serial; + return serial; + } + return NULL; +} + +static int flip_that( struct tty_struct *tty, __u16 UartNumber, struct usb_serial *serial) +{ + tty_flip_buffer_push(tty); + tty_schedule_flip(tty); + return 0; +} + +//Handles processing and moving data to the tty layer +static void port_sofrint(void *private) +{ + struct usb_serial_port *port = (struct usb_serial_port *)private; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + struct tty_struct *tty = port->tty; + unsigned char *data = port->read_urb->transfer_buffer; + unsigned int UartNumber; + struct urb *urb = port->read_urb; + unsigned int RxCount = urb->actual_length; + int i, result; + int flag, flag_data; + + //UartNumber = MINOR(port->tty->device) - serial->minor; + UartNumber = tty->index - serial->minor; + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + mydbg ("%s - port->RxHolding = %d\n", __FUNCTION__, port->RxHolding); + + if (port_paranoia_check (port, __FUNCTION__) != 0) { + mydbg("%s - port_paranoia_check, exiting\n", __FUNCTION__); + port->ReadBulkStopped = 1; + return; + } + + if (!serial) { + mydbg("%s - bad serial pointer, exiting\n", __FUNCTION__); + return; + } + if (port->closePending == 1) //Were closing , stop reading + { + mydbg("%s - (port->closepending == 1\n", __FUNCTION__); + port->ReadBulkStopped = 1; + return; + } + + //RxHolding is asserted by throttle, if we assert it, we're not receiving any more + //characters and let the box handle the flow control + if (port->RxHolding == 1) { + port->ReadBulkStopped = 1; + return; + } + + if (urb->status) { + port->ReadBulkStopped = 1; + + mydbg("%s - nonzero read bulk status received: %d\n", __FUNCTION__, urb->status); + return; + } + + + tty = port->tty; + mydbg("%s - port %d, tty =0x%p\n", __FUNCTION__, port->number, tty); + + + if (tty && RxCount) { + flag_data = 0; + for (i = 0; i < RxCount ; ++i) { + //Look ahead code here + + if ((i <= (RxCount - 3)) && (THISCHAR == 0x1b) && (NEXTCHAR == 0x1b)) { + flag = 0; + switch (THIRDCHAR) { + case 0x00: + //Line status change 4th byte must follow + if (i > (RxCount - 4)) { + mydbg("Illegal escape sequences in received data\n"); + break; + } + ProcessLineStatus(port, FOURTHCHAR); + i += 3; + flag = 1; + break; + + case 0x01: + //Modem status status change 4th byte must follow + mydbg("Modem status status. \n"); + + if (i > (RxCount - 4)) { + mydbg("Illegal escape sequences in received data\n"); + break; + } + ProcessModemStatus(port, FOURTHCHAR); + i += 3; + flag = 1; + break; + case 0xff: + mydbg("No status sequence. \n"); + + ProcessRxChar(port, THISCHAR); + ProcessRxChar(port, NEXTCHAR); + i += 2; + break; + + }//end switch + if (flag == 1) + continue; + } //endif + + if(tty && urb->actual_length) { + tty_buffer_request_room(tty, 1); + tty_insert_flip_string(tty, (data + i), 1); + } + + + }//endfor + + tty_flip_buffer_push(tty); + + }//endif + + /* Continue trying to always read */ + usb_fill_bulk_urb (port->read_urb, serial->dev, + usb_rcvbulkpipe (serial->dev, + port->bulk_in_endpointAddress), + port->read_urb->transfer_buffer, + port->read_urb->transfer_buffer_length, + qt_read_bulk_callback, port); + result = usb_submit_urb(port->read_urb, GFP_ATOMIC); + if (result) + mydbg("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); + else + { + if (tty && RxCount) + flip_that(tty, UartNumber, serial); + } + + + return; + + } + + + +static void qt_read_bulk_callback(struct urb *urb) +{ + + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + + + if (urb->status) + { + + port->ReadBulkStopped = 1; + mydbg("%s - nonzero write bulk status received: %d\n", __FUNCTION__, urb->status); + return; + } + + port_sofrint((void *) port); + schedule_work(&port->work); +} + + +static void ProcessRxChar(struct usb_serial_port *port, unsigned char Data){ + struct tty_struct *tty; + struct urb *urb = port->read_urb; + tty = port->tty; + /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */ + + if(tty && urb->actual_length) + { + tty_buffer_request_room(tty, 1); + tty_insert_flip_string(tty, &Data, 1); + //tty_flip_buffer_push(tty); + + + } + + return; +} + +static void ProcessLineStatus(struct usb_serial_port *port, unsigned char line_status){ + + port->shadowLSR = line_status & (SERIAL_LSR_OE | SERIAL_LSR_PE | SERIAL_LSR_FE | + SERIAL_LSR_BI); + return; +} + + +static void ProcessModemStatus(struct usb_serial_port *port, unsigned char modem_status){ + + port->shadowMSR = modem_status; + wake_up_interruptible(&port->wait); + return; +} + + + + + + +static void serqt_usb_disconnect(struct usb_interface *interface){ + struct usb_serial *serial = usb_get_intfdata (interface); + //struct device *dev = &interface->dev; + struct usb_serial_port *port; + int i; + + mydbg ("%s\n", __FUNCTION__); + if (serial) + { + + serial->dev = NULL; + + for (i = 0; i < serial->num_ports; ++i) + serial->port[i].open_count = 0; + + for (i = 0; i < serial->num_bulk_in; ++i) + { + port = &serial->port[i]; + if (port->read_urb) + { + usb_unlink_urb (port->read_urb); + usb_free_urb (port->read_urb); + } + if (port->bulk_in_buffer) + kfree (port->bulk_in_buffer); + } + for (i = 0; i < serial->num_bulk_out; ++i) + { + port = &serial->port[i]; + if (port->write_urb) + { + usb_unlink_urb (port->write_urb); + usb_free_urb (port->write_urb); + } + if (port->bulk_out_buffer) + kfree (port->bulk_out_buffer); + } + for (i = 0; i < serial->num_interrupt_in; ++i) + { + port = &serial->port[i]; + if (port->interrupt_in_urb) + { + usb_unlink_urb (port->interrupt_in_urb); + usb_free_urb (port->interrupt_in_urb); + } + if (port->interrupt_in_buffer) + kfree (port->interrupt_in_buffer); + } + + + /* return the minor range that this device had */ + return_serial (serial); + + /* free up any memory that we allocated */ + kfree (serial); + + + + } else + { + dev_info(&interface->dev, "device disconnected"); + } + + +} + + + + + + + +static struct usb_serial *get_serial_by_minor (unsigned int minor) +{ + return serial_table[minor]; +} + +/***************************************************************************** + * Driver tty interface functions + *****************************************************************************/ +static int serial_open (struct tty_struct *tty, struct file * filp){ + struct usb_serial *serial; + struct usb_serial_port *port; + unsigned int portNumber; + int retval = 0; + + mydbg("%s\n", __FUNCTION__); + + /* initialize the pointer incase something fails */ + tty->driver_data = NULL; + + /* get the serial object associated with this tty pointer */ + //serial = get_serial_by_minor (MINOR(tty->device)); + + /* get the serial object associated with this tty pointer */ + serial = get_serial_by_minor(tty->index); + + + if (serial_paranoia_check (serial, __FUNCTION__)) + return -ENODEV; + + + /* set up our port structure making the tty driver remember our port object, and us it */ + portNumber = tty->index - serial->minor; + port = &serial->port[portNumber]; + tty->driver_data = port; + + down (&port->sem); + port->tty = tty; + + + ++port->open_count; + if (port->open_count == 1) + { + port->closePending = 0; + mydbg("%s port->closepending = 0\n", __FUNCTION__); + + port->RxHolding = 0; + mydbg("%s port->RxHolding = 0\n", __FUNCTION__); + + retval = qt_open(port, filp); + } + + if (retval) + { + port->open_count = 0; + } + mydbg("%s returning port->closePending = %d\n", __FUNCTION__, port->closePending); + + up (&port->sem); + return retval; +} +/***************************************************************************** + *device's specific driver functions + *****************************************************************************/ +static int qt_open (struct usb_serial_port *port, struct file *filp){ + struct usb_serial *serial = port->serial; + int result = 0; + unsigned int UartNumber; + struct qt_get_device_data DeviceData; + struct qt_open_channel_data ChannelData; + unsigned short default_divisor = 0x30; //gives 9600 baud rate + unsigned char default_LCR = SERIAL_8_DATA; // 8, none , 1 + int status = 0; + + + + + if (port_paranoia_check (port, __FUNCTION__)) + return -ENODEV; + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + /* force low_latency on so that our tty_push actually forces the data through, + otherwise it is scheduled, and with high data rates (like with OHCI) data + can get lost. */ + if (port->tty) + port->tty->low_latency = 0; + + + UartNumber = port->tty->index - serial->minor; + + status = box_get_device(serial, &DeviceData); + if (status < 0) + { + mydbg(__FILE__"box_get_device failed\n"); + return status; + } + serial->num_OpenCount++; + mydbg("%s serial->num_OpenCount = %d\n", __FUNCTION__, serial->num_OpenCount); + //Open uart channel + + //Port specific setups + status = BoxOPenCloseChannel(serial, UartNumber, 1, &ChannelData); + if (status < 0) + { + mydbg(__FILE__"BoxOPenCloseChannel failed\n"); + return status; + } + mydbg(__FILE__"BoxOPenCloseChannel completed.\n"); + + port->shadowLSR = ChannelData.line_status & + (SERIAL_LSR_OE | SERIAL_LSR_PE | SERIAL_LSR_FE | SERIAL_LSR_BI); + + port->shadowMSR = ChannelData.modem_status & + (SERIAL_MSR_CTS | SERIAL_MSR_DSR | SERIAL_MSR_RI | SERIAL_MSR_CD); + + + //Set Baud rate to default and turn off (default)flow control here + status = BoxSetUart(serial, UartNumber, default_divisor, default_LCR); + if (status < 0) + { + mydbg(__FILE__"BoxSetUart failed\n"); + return status; + } + mydbg(__FILE__"BoxSetUart completed.\n"); + + + //Put this here to make it responsive to stty and defauls set by the tty layer + qt_set_termios(port, NULL); + + + //Initialize the wait que head + init_waitqueue_head(&(port->wait)); + + /* if we have a bulk endpoint, start reading from it */ + if (serial->num_bulk_in) + { + /* Start reading from the device */ + usb_fill_bulk_urb (port->read_urb, serial->dev, + usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), + port->read_urb->transfer_buffer, + port->read_urb->transfer_buffer_length, + qt_read_bulk_callback, + port); + + port->ReadBulkStopped = 0; + + result = usb_submit_urb(port->read_urb, GFP_ATOMIC); + + if (result) + { + err("%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result); + port->ReadBulkStopped = 1; + } + + } + + return result; +} + +static void serial_close(struct tty_struct *tty, struct file * filp){ + struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + + if (!serial) + return; + + down (&port->sem); + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + /* if disconnect beat us to the punch here, there's nothing to do */ + if (tty->driver_data) + { + if (!port->open_count) + { + mydbg ("%s - port not opened\n", __FUNCTION__); + goto exit; + } + + --port->open_count; + if (port->open_count <= 0) + { + port->closePending = 1; + mydbg ("%s - port->closePending = 1\n", __FUNCTION__); + + if (serial->dev) + { + qt_close(port, filp); + port->open_count = 0; + } + } + + } + + exit: + up (&port->sem); + + mydbg("%s - %d return\n", __FUNCTION__, port->number); + + +} + +static void qt_close (struct usb_serial_port *port, struct file *filp){ + unsigned long jift = jiffies + 10 * HZ; + __u8 LSR_Value, MCR_Value; + struct usb_serial *serial = port->serial; + int status; + unsigned int UartNumber; + + struct qt_open_channel_data ChannelData; + status = 0; + LSR_Value = 0; + + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + UartNumber = port->tty->index - serial->minor; + + /* shutdown any bulk reads that might be going on */ + if (serial->num_bulk_out) + usb_unlink_urb (port->write_urb); + if (serial->num_bulk_in) + usb_unlink_urb (port->read_urb); + + + //wait up to 30 seconds for transmitter to empty + do + { + status = BoxGetRegister(serial, UartNumber, LINE_STATUS_REGISTER, &LSR_Value); + if (status < 0) + { + mydbg(__FILE__"box_get_device failed\n"); + break; + } + + if ((LSR_Value & SERIAL_LSR_TEMT) && (port->ReadBulkStopped == 1)) + break; + schedule(); + + + } + while (jiffies <= jift); + + if(jiffies > jift) + mydbg("%s - port %d timout of checking transmitter empty\n", __FUNCTION__, port->number); + else + mydbg("%s - port %d checking transmitter empty succeded\n", __FUNCTION__, port->number); + + + + status = BoxGetRegister(serial, UartNumber, MODEM_CONTROL_REGISTER, &MCR_Value); + mydbg(__FILE__"BoxGetRegister MCR = 0x%x.\n", MCR_Value); + + + if (status >= 0) + { + MCR_Value &= ~(SERIAL_MCR_DTR | SERIAL_MCR_RTS); +// status = BoxSetRegister(serial, UartNumber, MODEM_CONTROL_REGISTER, MCR_Value); + } + + + //Close uart channel + status = BoxOPenCloseChannel(serial, UartNumber, 0, &ChannelData); + if(status < 0) + mydbg("%s - port %d BoxOPenCloseChannel failed.\n", __FUNCTION__, port->number); + + serial->num_OpenCount--; + + +} + + + +static int serial_write (struct tty_struct * tty, const unsigned char *buf, int count) +{ + struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; + struct usb_serial *serial; + int retval = -EINVAL; + unsigned int UartNumber; + int from_user = 0; + + + serial = get_usb_serial (port, __FUNCTION__); + if(serial == NULL) + return -ENODEV; + //This can happen if we get disconnected a + if (port->open_count == 0) + { + return -ENODEV; + } + UartNumber = port->tty->index - serial->minor; + + mydbg("%s - port %d, %d byte(s)\n", __FUNCTION__, port->number, count); + mydbg("%s - port->RxHolding = %d\n", __FUNCTION__, port->RxHolding); + + if (!port->open_count) + { + mydbg("%s - port not opened\n", __FUNCTION__); + goto exit; + } + + retval = qt_write(port, from_user, buf, count); + + exit: + return retval; +} + + +static int qt_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count){ + int result; + unsigned int UartNumber; + + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + if(serial == NULL) + return -ENODEV; + + + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + if (count == 0) + { + mydbg("%s - write request of 0 bytes\n", __FUNCTION__); + return(0); + } + + + UartNumber = port->tty->index - serial->minor; + /* only do something if we have a bulk out endpoint */ + if (serial->num_bulk_out) + { + if (port->write_urb->status == -EINPROGRESS) + { + mydbg("%s - already writing\n", __FUNCTION__); + return(0); + } + + count = (count > port->bulk_out_size) ? port->bulk_out_size : count; + + if (from_user) + { + if (copy_from_user(port->write_urb->transfer_buffer, buf, count)) + return -EFAULT; + } else + { + memcpy (port->write_urb->transfer_buffer, buf, count); + } + + //usb_serial_debug_data(__FILE__, __FUNCTION__, count, port->write_urb->transfer_buffer); + + /* set up our urb */ + + + usb_fill_bulk_urb (port->write_urb, serial->dev, + usb_sndbulkpipe (serial->dev, + port->bulk_out_endpointAddress), + port->write_urb->transfer_buffer, count, + qt_write_bulk_callback, port); + + + + + + /* send the data out the bulk port */ + result = usb_submit_urb(port->write_urb, GFP_ATOMIC); + if (result) + mydbg("%s - failed submitting write urb, error %d\n", __FUNCTION__, result); + else + result = count; + + return result; + } + + /* no bulk out, so return 0 bytes written */ + return(0); +} + + + +static void qt_write_bulk_callback(struct urb *urb) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + if (!serial) + { + mydbg("%s - bad serial pointer, exiting\n", __FUNCTION__); + return; + } + + if (urb->status) + { + mydbg("%s - nonzero write bulk status received: %d\n", __FUNCTION__, urb->status); + return; + } + // + port_softint(&port->work); + schedule_work(&port->work); + + return; +} + + +static void port_softint(struct work_struct *work) +{ + struct usb_serial_port *port = + container_of(work, struct usb_serial_port, work); + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + struct tty_struct *tty; + + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + + + if (!serial) + return; + + + tty = port->tty; + if (!tty) + return; +#if 0 + if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) + { + mydbg("%s - write wakeup call.\n", __FUNCTION__); + (tty->ldisc.write_wakeup)(tty); + } +#endif + + wake_up_interruptible(&tty->write_wait); +} +static int serial_write_room (struct tty_struct *tty) +{ + struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + int retval = -EINVAL; + + if (!serial) + return -ENODEV; + + down (&port->sem); + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + if (!port->open_count) + { + mydbg("%s - port not open\n", __FUNCTION__); + goto exit; + } + + retval = qt_write_room(port); + + exit: + up (&port->sem); + return retval; +} +static int qt_write_room (struct usb_serial_port *port) +{ + struct usb_serial *serial = port->serial; + int room = 0; + if (port->closePending == 1) + { + mydbg("%s - port->closePending == 1\n", __FUNCTION__); + return -ENODEV; + } + + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + if (serial->num_bulk_out) + { + if (port->write_urb->status != -EINPROGRESS) + room = port->bulk_out_size; + } + + mydbg("%s - returns %d\n", __FUNCTION__, room); + return(room); +} +static int serial_chars_in_buffer (struct tty_struct *tty) +{ + struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + int retval = -EINVAL; + + if (!serial) + return -ENODEV; + + down (&port->sem); + + mydbg("%s = port %d\n", __FUNCTION__, port->number); + + if (!port->open_count) { + mydbg("%s - port not open\n", __FUNCTION__); + goto exit; + } + + retval = qt_chars_in_buffer(port); + +exit: + up (&port->sem); + return retval; +} + + + +static int qt_chars_in_buffer (struct usb_serial_port *port) +{ + struct usb_serial *serial = port->serial; + int chars = 0; + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + if (serial->num_bulk_out) + { + if (port->write_urb->status == -EINPROGRESS) + chars = port->write_urb->transfer_buffer_length; + } + + mydbg("%s - returns %d\n", __FUNCTION__, chars); + return(chars); +} + + +static int serial_tiocmset (struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) +{ + + struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + int retval = -ENODEV; + unsigned int UartNumber; + mydbg("In %s \n", __FUNCTION__); + + if (!serial) + return -ENODEV; + + + UartNumber = port->tty->index - serial->minor; + + + down (&port->sem); + + mydbg("%s - port %d \n", __FUNCTION__, port->number); + mydbg ("%s - port->RxHolding = %d\n", __FUNCTION__, port->RxHolding); + + if (!port->open_count) + { + mydbg ("%s - port not open\n", __FUNCTION__); + goto exit; + } + + retval = qt_tiocmset(port, file, set); + + exit: + up (&port->sem); + return retval; +} + + +static int qt_tiocmset(struct usb_serial_port *port, struct file * file, unsigned int value) +{ + + __u8 MCR_Value; + int status; + unsigned int UartNumber; + + + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + if(serial == NULL) + return -ENODEV; + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + /**************************************************************************************/ + /** TIOCMGET + */ + UartNumber = port->tty->index - serial->minor; + status = BoxGetRegister(port->serial, UartNumber, MODEM_CONTROL_REGISTER, &MCR_Value); + if (status < 0) + return -ESPIPE; + + //Turn off the RTS and DTR and loopbcck and then only + //trun on what was asked for + MCR_Value &= ~(SERIAL_MCR_RTS | SERIAL_MCR_DTR | SERIAL_MCR_LOOP); + if (value & TIOCM_RTS) + MCR_Value |= SERIAL_MCR_RTS; + if (value & TIOCM_DTR) + MCR_Value |= SERIAL_MCR_DTR; + if (value & TIOCM_LOOP) + MCR_Value |= SERIAL_MCR_LOOP; + + status = BoxSetRegister(port->serial, UartNumber, MODEM_CONTROL_REGISTER, MCR_Value); + if (status < 0) + return -ESPIPE; + else + return 0; +} + +static int serial_tiocmget(struct tty_struct *tty, struct file *file) +{ + + struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; + + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + int retval = -ENODEV; + unsigned int UartNumber; + mydbg("In %s \n", __FUNCTION__); + + if (!serial) + return -ENODEV; + + + UartNumber = port->tty->index - serial->minor; + + + down (&port->sem); + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + mydbg ("%s - port->RxHolding = %d\n", __FUNCTION__, port->RxHolding); + + if (!port->open_count) + { + mydbg ("%s - port not open\n", __FUNCTION__); + goto exit; + } + + retval = qt_tiocmget(port, file); + + exit: + up (&port->sem); + return retval; +} + + + +static int qt_tiocmget(struct usb_serial_port *port, struct file * file) +{ + + __u8 MCR_Value; + __u8 MSR_Value; + unsigned int result = 0; + int status; + unsigned int UartNumber; + struct tty_struct * tty; + + + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + if(serial == NULL) + return -ENODEV; + tty = port->tty; + + mydbg("%s - port %d, tty =0x%p\n", __FUNCTION__, port->number, tty); + + /**************************************************************************************/ + /** TIOCMGET + */ + UartNumber = port->tty->index - serial->minor; + status = BoxGetRegister(port->serial, UartNumber, MODEM_CONTROL_REGISTER, &MCR_Value); + if (status >= 0) + { + status = BoxGetRegister(port->serial, UartNumber, MODEM_STATUS_REGISTER, &MSR_Value); + + } + + if (status >= 0) + { + result = ((MCR_Value & SERIAL_MCR_DTR) ? TIOCM_DTR: 0) + //DTR IS SET + | ((MCR_Value & SERIAL_MCR_RTS) ? TIOCM_RTS: 0) + //RTS IS SET + | ((MSR_Value & SERIAL_MSR_CTS) ? TIOCM_CTS: 0) + //CTS is set + | ((MSR_Value & SERIAL_MSR_CD) ? TIOCM_CAR: 0) + //Carrier detect is set + | ((MSR_Value & SERIAL_MSR_RI) ? TIOCM_RI: 0) + //Ring indicator set + | ((MSR_Value & SERIAL_MSR_DSR) ? TIOCM_DSR: 0); + //DSR is set + return result; + + } + else + return -ESPIPE; + //endif tatus => 0 +} + + + +static int serial_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg) +{ + + struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + int retval = -ENODEV; + unsigned int UartNumber; + mydbg("In %s \n", __FUNCTION__); + + if (!serial) + return -ENODEV; + + + UartNumber = port->tty->index - serial->minor; + + + down (&port->sem); + + mydbg("%s - port %d, cmd 0x%.4x\n", __FUNCTION__, port->number, cmd); + mydbg ("%s - port->RxHolding = %d\n", __FUNCTION__, port->RxHolding); + + if (!port->open_count) + { + mydbg ("%s - port not open\n", __FUNCTION__); + goto exit; + } + + retval = qt_ioctl(port, file, cmd, arg); + + exit: + up (&port->sem); + return retval; +} +static int qt_ioctl(struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) +{ + __u8 MCR_Value; + __u8 MSR_Value; + unsigned short Prev_MSR_Value; + unsigned int value, result = 0; + int status; + unsigned int UartNumber; + struct tty_struct * tty; + + + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + if(serial == NULL) + return -ENODEV; + tty = port->tty; + + mydbg("%s - port %d, tty =0x%p\n", __FUNCTION__, port->number, tty); + + /**************************************************************************************/ + /** TIOCMGET + */ + UartNumber = port->tty->index - serial->minor; + + if(cmd == TIOCMGET) + { + MCR_Value = port->shadowMCR; + MSR_Value = port->shadowMSR; + + { + result = ((MCR_Value & SERIAL_MCR_DTR) ? TIOCM_DTR: 0) + //DTR IS SET + | ((MCR_Value & SERIAL_MCR_RTS) ? TIOCM_RTS: 0) + //RTS IS SET + | ((MSR_Value & SERIAL_MSR_CTS) ? TIOCM_CTS: 0) + //CTS is set + | ((MSR_Value & SERIAL_MSR_CD) ? TIOCM_CAR: 0) + //Carrier detect is set + | ((MSR_Value & SERIAL_MSR_RI) ? TIOCM_RI: 0) + //Ring indicator set + | ((MSR_Value & SERIAL_MSR_DSR) ? TIOCM_DSR: 0); + //DSR is set + if(copy_to_user((unsigned int *)arg, &result, sizeof(unsigned int))) + return -EFAULT; + return 0; + + }//endif tatus => 0 + + }//endif(cmd == TIOCMGET) + /**************************************************************************************/ + /** End TIOCMGET + */ + /**************************************************************************************/ + /** TIOCMBIS, TIOCMBIC, AND TIOCMSET */ + + /**************************************************************************************/ + + if(cmd == TIOCMBIS || cmd == TIOCMBIC || cmd == TIOCMSET) + { + status = BoxGetRegister(port->serial, UartNumber, MODEM_CONTROL_REGISTER, &MCR_Value); + if (status < 0) + return -ESPIPE; + if (copy_from_user(&value, (unsigned int *)arg, sizeof(unsigned int))) + return -EFAULT; + + switch (cmd) + { + case TIOCMBIS: + if (value & TIOCM_RTS) + MCR_Value |= SERIAL_MCR_RTS; + if (value & TIOCM_DTR) + MCR_Value |= SERIAL_MCR_DTR; + if (value & TIOCM_LOOP) + MCR_Value |= SERIAL_MCR_LOOP; + break; + case TIOCMBIC: + if (value & TIOCM_RTS) + MCR_Value &= ~SERIAL_MCR_RTS; + if (value & TIOCM_DTR) + MCR_Value &= ~SERIAL_MCR_DTR; + if (value & TIOCM_LOOP) + MCR_Value &= ~SERIAL_MCR_LOOP; + break; + case TIOCMSET: + //Turn off the RTS and DTR and loopbcck and then only + //trun on what was asked for + MCR_Value &= ~(SERIAL_MCR_RTS | SERIAL_MCR_DTR | SERIAL_MCR_LOOP); + if (value & TIOCM_RTS) + MCR_Value |= SERIAL_MCR_RTS; + if (value & TIOCM_DTR) + MCR_Value |= SERIAL_MCR_DTR; + if (value & TIOCM_LOOP) + MCR_Value |= SERIAL_MCR_LOOP; + break; + default: + break; + + } + status = BoxSetRegister(port->serial, UartNumber, MODEM_CONTROL_REGISTER, MCR_Value); + if (status < 0) + return -ESPIPE; + else + { + port->shadowMCR = MCR_Value; + return 0; + } + + + } + /**************************************************************************************/ + /** TIOCMBIS, TIOCMBIC, AND TIOCMSET end + */ + /**************************************************************************************/ + + if(cmd == TIOCMIWAIT) + { + DECLARE_WAITQUEUE(wait, current); + Prev_MSR_Value = port->shadowMSR & SERIAL_MSR_MASK; + while(1) + { + add_wait_queue(&port->wait, &wait); + set_current_state(TASK_INTERRUPTIBLE); + schedule(); + remove_wait_queue(&port->wait, &wait); + /* see if a signal woke us up */ + if(signal_pending(current)) + return -ERESTARTSYS; + MSR_Value = port->shadowMSR & SERIAL_MSR_MASK; + if(MSR_Value == Prev_MSR_Value) + return -EIO; //no change error + + if((arg & TIOCM_RNG && ((Prev_MSR_Value & SERIAL_MSR_RI) == + (MSR_Value & SERIAL_MSR_RI))) || + (arg & TIOCM_DSR && ((Prev_MSR_Value & SERIAL_MSR_DSR) == + (MSR_Value & SERIAL_MSR_DSR))) || + (arg & TIOCM_CD && ((Prev_MSR_Value & SERIAL_MSR_CD) == + (MSR_Value & SERIAL_MSR_CD))) || + (arg & TIOCM_CTS && ((Prev_MSR_Value & SERIAL_MSR_CTS) == + (MSR_Value & SERIAL_MSR_CTS)))) + { + return 0; + } + + }//endwhile + + } + mydbg("%s -No ioctl for that one. port = %d\n", __FUNCTION__, port->number); + + + return -ENOIOCTLCMD; +} + +static void serial_set_termios (struct tty_struct *tty, struct ktermios *old) +{ + struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + + if (!serial) + return; + + down (&port->sem); + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + if (!port->open_count) { + mydbg("%s - port not open\n", __FUNCTION__); + goto exit; + } + + /* pass on to the driver specific version of this function if it is available */ + qt_set_termios(port, old); + +exit: + up (&port->sem); +} + +static void qt_set_termios(struct usb_serial_port *port, struct ktermios *old_termios) +{ + unsigned int cflag; + int baud, divisor, remainder; + unsigned char LCR_change_to = 0; + struct tty_struct *tty; + int status; + struct usb_serial *serial; + __u16 UartNumber; + __u16 tmp, tmp2; + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + tmp = port->tty->index; + mydbg("%s - MINOR(port->tty->index) = %d\n", __FUNCTION__, tmp); + + + serial = port->serial; + tmp2 = serial->minor; + mydbg("%s - serial->minor = %d\n", __FUNCTION__, tmp2); + + + + UartNumber = port->tty->index - serial->minor; + + tty = port->tty; + + cflag = tty->termios->c_cflag; + + if (old_termios) + { + if((cflag == old_termios->c_cflag) && (RELEVANT_IFLAG(tty->termios->c_iflag) == + RELEVANT_IFLAG(old_termios->c_iflag))) + { + mydbg("%s - Nothing to change\n", __FUNCTION__); + return; + } + + + } + + mydbg("%s - 3\n", __FUNCTION__); + + switch(cflag) + { + case CS5: + LCR_change_to |= SERIAL_5_DATA; + break; + case CS6: + LCR_change_to |= SERIAL_6_DATA; + break; + case CS7: + LCR_change_to |= SERIAL_7_DATA; + break; + default: + case CS8: + LCR_change_to |= SERIAL_8_DATA; + break; + } + + //Parity stuff + if(cflag & PARENB) + { + if(cflag & PARODD) + LCR_change_to |= SERIAL_ODD_PARITY; + else + LCR_change_to |= SERIAL_EVEN_PARITY; + } + if(cflag & CSTOPB) + LCR_change_to |= SERIAL_TWO_STOPB; + else + LCR_change_to |= SERIAL_TWO_STOPB; + + mydbg("%s - 4\n", __FUNCTION__); + //Thats the LCR stuff, go ahead and set it + baud = tty_get_baud_rate(tty); + if (!baud) { + /* pick a default, any default... */ + baud = 9600; + } + + mydbg("%s - got baud = %d\n", __FUNCTION__, baud); + + + divisor = MAX_BAUD_RATE / baud; + remainder = MAX_BAUD_RATE % baud; + //Round to nearest divisor + if(((remainder * 2) >= baud) && (baud != 110)) + divisor++; + + //Set Baud rate to default and turn off (default)flow control here + status = BoxSetUart(serial, UartNumber, (unsigned short) divisor, LCR_change_to); + if (status < 0) + { + mydbg(__FILE__"BoxSetUart failed\n"); + return; + } + //************************Now determine flow control + + if(cflag & CRTSCTS) + { + mydbg("%s - Enabling HW flow control port %d\n", __FUNCTION__, port->number); + + //Enable RTS/CTS flow control + status = BoxSetHW_FlowCtrl(serial, UartNumber, 1); + + if (status < 0) + { + mydbg(__FILE__"BoxSetHW_FlowCtrl failed\n"); + return; + } + } + else + { + //Disable RTS/CTS flow control + mydbg("%s - disabling HW flow control port %d\n", __FUNCTION__, port->number); + + status = BoxSetHW_FlowCtrl(serial, UartNumber, 0); + if (status < 0) + { + mydbg(__FILE__"BoxSetHW_FlowCtrl failed\n"); + return; + } + + + } + + //************************************************* + /* 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); + status = BoxSetSW_FlowCtrl(serial, UartNumber, stop_char, start_char); + if(status < 0) + mydbg(__FILE__"BoxSetSW_FlowCtrl (enabled) failed\n"); + + } + else + { + //disable SW flow control + status = BoxDisable_SW_FlowCtrl(serial, UartNumber); + if(status < 0) + mydbg(__FILE__"BoxSetSW_FlowCtrl (diabling) failed\n"); + + } + + + +} +/**************************************************************************** +* BoxGetRegister +* issuse a GET_REGISTER vendor-spcific request on the default control pipe +* If successful, fills in the pValue with the register value asked for +****************************************************************************/ +static int BoxGetRegister(struct usb_serial *serial, unsigned short Uart_Number, + unsigned short Register_Num, __u8 *pValue ) +{ + int result; + __u16 current_length; + + + current_length = sizeof(struct qt_get_device_data); + + result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), QT_GET_SET_REGISTER, + 0xC0, Register_Num, Uart_Number, (void *)pValue, sizeof(*pValue), 300); + + return result; +} +/**************************************************************************** +* BoxSetRegister +* issuse a GET_REGISTER vendor-spcific request on the default control pipe +* If successful, fills in the pValue with the register value asked for +****************************************************************************/ +static int BoxSetRegister(struct usb_serial *serial, unsigned short Uart_Number, + unsigned short Register_Num, unsigned short Value ) +{ + int result; + unsigned short RegAndByte; + + + RegAndByte = Value; + RegAndByte = RegAndByte << 8; + RegAndByte = RegAndByte + Register_Num; + +// result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_GET_SET_REGISTER, +// 0xC0, Register_Num, Uart_Number, NULL, 0, 300); + + + result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_GET_SET_REGISTER, + 0x40, RegAndByte, Uart_Number, NULL,0, 300); + + + return result; +} + + + +/** + * box_get_device + * Issue a GET_DEVICE vendor-specific request on the default control pipe If + * successful, fills in the qt_get_device_data structure pointed to by + * device_data, otherwise return a negative error number of the problem. + */ +static int box_get_device(struct usb_serial *serial, + struct qt_get_device_data *device_data) +{ + int result; + __u16 current_length; + unsigned char *transfer_buffer; + + current_length = sizeof(struct qt_get_device_data); + transfer_buffer = kmalloc(current_length, GFP_KERNEL); + if (!transfer_buffer) + return -ENOMEM; + + result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + QT_SET_GET_DEVICE, 0xc0, 0, 0, + transfer_buffer, current_length, 300); + if (result > 0) + memcpy(device_data, transfer_buffer, current_length); + kfree(transfer_buffer); + + return result; +} + +/** + * box_set_device + * Issue a SET_DEVICE vendor-specific request on the default control pipe If + * successful returns the number of bytes written, otherwise it returns a + * negative error number of the problem. + */ +static int box_set_device(struct usb_serial *serial, struct qt_get_device_data *device_data) +{ + int result; + __u16 length; + __u16 PortSettings; + + PortSettings = ((__u16)(device_data->portb)); + PortSettings = (PortSettings << 8); + PortSettings += ((__u16)(device_data->porta)); + + length = sizeof(struct qt_get_device_data); + mydbg("%s - PortSettings = 0x%x\n", __FUNCTION__, PortSettings); + + result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + QT_SET_GET_DEVICE, 0x40, PortSettings, + 0, NULL, 0, 300); + return result; +} + +/**************************************************************************** + * BoxOPenCloseChannel + * This funciotn notifies the device that the device driver wishes to open a particular UART channel. its + * purpose is to allow the device driver and the device to synchronize state information. + * OpenClose = 1 for open , 0 for close + ****************************************************************************/ +static int BoxOPenCloseChannel(struct usb_serial *serial, __u16 Uart_Number, __u16 OpenClose, struct qt_open_channel_data *pDeviceData) +{ + int result; + __u16 length; + __u8 Direcion; + unsigned int pipe; + length = sizeof(struct qt_open_channel_data); + + if (OpenClose == 1) //IF OPENING + { + Direcion = USBD_TRANSFER_DIRECTION_IN; + pipe = usb_rcvctrlpipe(serial->dev, 0); + result = usb_control_msg (serial->dev, pipe, QT_OPEN_CLOSE_CHANNEL, + Direcion, OpenClose, Uart_Number, pDeviceData, length, 300); + + + } + else + { + Direcion = USBD_TRANSFER_DIRECTION_OUT; + pipe = usb_sndctrlpipe(serial->dev, 0); + result = usb_control_msg (serial->dev, pipe, QT_OPEN_CLOSE_CHANNEL, + Direcion, OpenClose, Uart_Number, NULL, 0, 300); + + } + + + + return result; +} + +/**************************************************************************** + * BoxSetPrebufferLevel + TELLS BOX WHEN TO ASSERT FLOW CONTROL + ****************************************************************************/ +static int BoxSetPrebufferLevel(struct usb_serial *serial) +{ + int result; + __u16 buffer_length; + + buffer_length = PREFUFF_LEVEL_CONSERVATIVE; + result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + QT_GET_SET_PREBUF_TRIG_LVL, 0x40, + buffer_length, 0, NULL, 0, 300); + return result; +} + + + +/**************************************************************************** + * BoxSetATC + TELLS BOX WHEN TO ASSERT automatic transmitter control + ****************************************************************************/ +static int BoxSetATC(struct usb_serial *serial, __u16 n_Mode) +{ + int result; + __u16 buffer_length; + + + buffer_length = PREFUFF_LEVEL_CONSERVATIVE; + + result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_SET_ATF, + 0x40, n_Mode, 0, NULL, 0, 300); + + return result; +} + +/**************************************************************************** +* BoxSetUart +* issuse a SET_UART vendor-spcific request on the default control pipe +* If successful sets baud rate divisor and LCR value +****************************************************************************/ +static int BoxSetUart(struct usb_serial *serial, unsigned short Uart_Number, + unsigned short default_divisor, unsigned char default_LCR ) +{ + int result; + unsigned short UartNumandLCR; + + UartNumandLCR = (default_LCR << 8) + Uart_Number; + + result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_GET_SET_UART, + 0x40, default_divisor, UartNumandLCR, NULL, 0, 300); + + return result; +} + + +static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int UartNumber, int bSet) +{ + __u8 MCR_Value = 0; + __u8 MSR_Value = 0, MOUT_Value = 0; + struct usb_serial_port *port; + unsigned int status; + + port = serial->port; + + if (bSet == 1) + { + MCR_Value = SERIAL_MCR_RTS; //flow control, box will clear RTS line to prevent remote + } //device from xmitting more chars + else + { //no flow control to remote device + MCR_Value = 0; + + } + MOUT_Value = MCR_Value << 8; + + + if(bSet == 1) + { + MSR_Value = SERIAL_MSR_CTS; //flow control, box will inhibit xmit data if CTS line is asserted + } + else + { + MSR_Value = 0; //Box will not inhimbe xmit data due to CTS line + } + MOUT_Value |= MSR_Value; + + + status = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_HW_FLOW_CONTROL_MASK, + 0x40, MOUT_Value, UartNumber, NULL, 0, 300); + return status; + +} + +static int BoxSetSW_FlowCtrl(struct usb_serial *serial, __u16 UartNumber, unsigned char stop_char, unsigned char start_char) +{ + __u16 nSWflowout; + int result; + + nSWflowout = start_char << 8; + nSWflowout = (unsigned short)stop_char; + + result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_SW_FLOW_CONTROL_MASK, + 0x40, nSWflowout, UartNumber, NULL, 0, 300); + return result; + +} +static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 UartNumber) +{ + int result; + + + result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_SW_FLOW_CONTROL_DISABLE, + 0x40, 0, UartNumber, NULL, 0, 300); + return result; + +} + + +/***************************************************************************** + * SerialThrottle + * this function is called by the tty driver when it wants to stop the data + * being read from the port. + *****************************************************************************/ + + +static void serial_throttle (struct tty_struct * tty) +{ + struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + if (!serial) + return; + + down (&port->sem); + + + if (!port->open_count) { + mydbg ("%s - port not open\n", __FUNCTION__); + goto exit; + } + //shut down any bulk reads that may be going on +// usb_unlink_urb (port->read_urb); + /* pass on to the driver specific version of this function */ + port->RxHolding = 1; + mydbg("%s - port->RxHolding = 1\n", __FUNCTION__); + + +exit: + up (&port->sem); + return; +} + +static void serial_unthrottle (struct tty_struct * tty) +{ + struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + unsigned int result; + + if (!serial) + return; + down (&port->sem); + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + if (!port->open_count) { + mydbg ("%s - port not open\n", __FUNCTION__); + goto exit; + } + + if(port->RxHolding == 1) + { + mydbg ("%s -port->RxHolding == 1\n", __FUNCTION__); + + port->RxHolding = 0; + mydbg ("%s - port->RxHolding = 0\n", __FUNCTION__); + + /* if we have a bulk endpoint, start it up */ + if ((serial->num_bulk_in) && (port->ReadBulkStopped == 1)) + { + /* Start reading from the device */ + usb_fill_bulk_urb (port->read_urb, serial->dev, + usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), + port->read_urb->transfer_buffer, + port->read_urb->transfer_buffer_length, + qt_read_bulk_callback, + port); + result = usb_submit_urb(port->read_urb, GFP_ATOMIC); + if (result) + err("%s - failed restarting read urb, error %d", __FUNCTION__, result); + } + } + exit: + up (&port->sem); + return; + + + +} + + +static int serial_break (struct tty_struct *tty, int break_state) +{ + struct usb_serial_port *port = (struct usb_serial_port *) tty->driver_data; + struct usb_serial *serial = get_usb_serial (port, __FUNCTION__); + __u16 UartNumber, Break_Value; + unsigned int result; + + UartNumber = port->tty->index - serial->minor; + if (!serial) + return -ENODEV; + + if(break_state == -1) + Break_Value = 1; + else + Break_Value = 0; + + down (&port->sem); + + mydbg("%s - port %d\n", __FUNCTION__, port->number); + + if (!port->open_count) { + mydbg("%s - port not open\n", __FUNCTION__); + goto exit; + } + + result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), QT_BREAK_CONTROL, + 0x40, Break_Value, UartNumber, NULL, 0, 300); + +exit: + up (&port->sem); + return 0; +} + + + + +static int serial_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data) +{ + struct usb_serial *serial; + int length = 0; + int i; + off_t begin = 0; + + mydbg("%s\n", __FUNCTION__); + length += sprintf (page, "usbserinfo:1.0 driver:%s\n", DRIVER_VERSION); + for (i = 0; i < SERIAL_TTY_MINORS && length < PAGE_SIZE; ++i) { + serial = get_serial_by_minor(i); + if (serial == NULL) + continue; + + length += sprintf (page+length, "%d:\n", i); + length += sprintf (page+length, " vendor:%04x product:%04x\n", serial->vendor, serial->product); + length += sprintf (page+length, " num_ports:%d\n", serial->num_ports); + length += sprintf (page+length, " port:%d\n", i - serial->minor + 1); + +// usb_make_path(serial->dev, tmp, sizeof(tmp)); +// length += sprintf (page+length, " path:%s", tmp); + + length += sprintf (page+length, "\n"); + if ((length + begin) > (off + count)) + goto done; + if ((length + begin) < off) { + begin += length; + length = 0; + } + } + *eof = 1; +done: + if (off >= (length + begin)) + return 0; + *start = page + (off-begin); + return ((count < begin+length-off) ? count : begin+length-off); +} + + + +int ioctl_serial_usb (struct inode *innod, struct file *filp, unsigned int cmd, + unsigned long arg) +{ + + unsigned err; + unsigned ucOPR_NewValue, uc_Value; + int *p_Num_of_adapters, counts, index, *p_QMCR_Value; + struct identity *p_Identity_of; + struct identity Identity_of; + struct usb_serial *lastserial, *serial; + + mydbg(KERN_DEBUG"ioctl_serial_usb cmd =\n"); + if (_IOC_TYPE(cmd) != SERIALQT_PCI_IOC_MAGIC) + return -ENOTTY; + if (_IOC_NR(cmd) > SERIALQT_IOC_MAXNR) + return -ENOTTY; + mydbg(KERN_DEBUG"ioctl_serial_usb cmd = 0x%x\n", cmd); + err = 0; + switch (cmd) + { + + + case SERIALQT_WRITE_QMCR: + err = -ENOTTY; //initialize as error so if we don't find this one we give//an error. + index = arg >> 16; + counts = 0; + + ucOPR_NewValue = arg; + + + err = EmulateWriteQMCR_Reg(index, ucOPR_NewValue); + break; + + case SERIALQT_READ_QMCR: + err = -ENOTTY; //initialize as error so if we don't find this one we give + //an error. + p_QMCR_Value = (int *)arg; + index = arg >> 16; + counts = 0; + + + + err = EmulateReadQMCR_Reg(index, &uc_Value); + if (err == 0) + { + err = put_user(uc_Value, p_QMCR_Value); + } + break; + + case SERIALQT_GET_NUMOF_UNITS: + p_Num_of_adapters = (int *)arg; + counts = 0; //Initialize counts to zero + //struct usb_serial *lastserial = serial_table[0], *serial; + lastserial = serial_table[0]; + + mydbg(KERN_DEBUG"SERIALQT_GET_NUMOF_UNITS \n"); + //if first pointer is nonull, we at least have one box + if(lastserial) + counts = 1; //we at least have one box + + for (index = 1; index < SERIAL_TTY_MINORS ; index++) + { + serial = serial_table[index]; + if(serial) + { + if(serial != lastserial) + { + //we had a change in the array, hence another box is there + lastserial = serial; + counts++; + } + } + else + break; + } + + mydbg(KERN_DEBUG"ioctl_serial_usb writting counts = %d", counts); + + err = put_user(counts, p_Num_of_adapters); + + + break; + case SERIALQT_GET_THIS_UNIT: + counts = 0; + p_Identity_of = (struct identity *)arg; + //copy user structure to local variable + get_user(Identity_of.index, &p_Identity_of->index); + mydbg(KERN_DEBUG"SERIALQT_GET_THIS_UNIT Identity_of.index\n"); + mydbg(KERN_DEBUG"SERIALQT_GET_THIS_UNIT Identity_of.index= 0x%x\n", Identity_of.index); + + err = -ENOTTY; //initialize as error so if we don't find this one we give + //an error. + serial = find_the_box(Identity_of.index); + if(serial) + { + err = put_user(serial->product, &p_Identity_of->n_identity); + + } + break; + + case SERIALQT_IS422_EXTENDED: + err = -ENOTTY; //initialize as error so if we don't find this one we give + mydbg(KERN_DEBUG"SERIALQT_IS422_EXTENDED \n"); + //an error. + index = arg >> 16; + + + counts = 0; + + mydbg(KERN_DEBUG"SERIALQT_IS422_EXTENDED, looking Identity_of.indext = 0x%x\n",index); + serial = find_the_box(index); + if(serial) + { + mydbg("%s index = 0x%x, serial = 0x%p\n", __FUNCTION__, index, serial); + for (counts = 0; serqt_422_table[counts] != 0; counts++) + { + + mydbg("%s serial->product = = 0x%x, serqt_422_table[counts] = 0x%x\n", __FUNCTION__, serial->product, serqt_422_table[counts]); + if(serial->product == serqt_422_table[counts]) + { + err = 0; + + mydbg("%s found match for 422extended\n", __FUNCTION__); + break; + } + } + } + break; + + + + + default: + err = -ENOTTY; + + + + + } //End switch + + mydbg("%s returning err = 0x%x\n", __FUNCTION__, err); + return err; +} + + + +static struct usb_serial *find_the_box(unsigned int index) +{ + struct usb_serial *lastserial, *foundserial, *serial; + int counts = 0, index2; + lastserial = serial_table[0]; + foundserial = NULL; + for (index2 = 0; index2 < SERIAL_TTY_MINORS ; index2++) + { + serial = serial_table[index2]; + + mydbg("%s index = 0x%x, index2 = 0x%x, serial = 0x%p\n", __FUNCTION__, index, index2, serial); + + if(serial) + { + //first see if this is the unit we'er looking for + mydbg("%s inside if(serial) counts = 0x%x , index = 0x%x\n", __FUNCTION__, counts, index); + if(counts == index) + { + //we found the one we're looking for, copythe product Id to user + + mydbg("%s we found the one we're looking for serial = 0x%p\n", __FUNCTION__, serial); + foundserial = serial; + break; + } + + if(serial != lastserial) + { + //when we have a change in the pointer + lastserial = serial; + counts++; + } + } + else + break; // no matches + } + + mydbg("%s returning foundserial = 0x%p\n", __FUNCTION__, foundserial); + return foundserial; +} + + + + static int EmulateWriteQMCR_Reg(int index, unsigned uc_value) + { + + __u16 ATC_Mode = 0; + struct usb_serial *serial; + int status; + struct qt_get_device_data DeviceData; + unsigned uc_temp = 0; + mydbg("Inside %s, uc_value = 0x%x\n", __FUNCTION__, uc_value); + + DeviceData.porta = 0; + DeviceData.portb = 0; + serial = find_the_box(index); + //Determine Duplex mode + if(!(serial)) + return -ENOTTY; + status = box_get_device(serial, &DeviceData); + if (status < 0) + { + mydbg(__FILE__"box_set_device failed\n"); + return status; + } + + uc_temp = uc_value & QMCR_HALF_DUPLEX_MASK; + switch (uc_temp) + { + case QMCR_FULL_DUPLEX: + DeviceData.porta &= ~DUPMODE_BITS; + DeviceData.porta |= FULL_DUPLEX; + ATC_Mode = ATC_DISABLED; + break; + case QMCR_HALF_DUPLEX_RTS: + DeviceData.porta &= ~DUPMODE_BITS; + DeviceData.porta |= HALF_DUPLEX_RTS; + ATC_Mode = ATC_RTS_ENABLED; + break; + case QMCR_HALF_DUPLEX_DTR: + DeviceData.porta &= ~DUPMODE_BITS; + DeviceData.porta |= HALF_DUPLEX_DTR; + ATC_Mode = ATC_DTR_ENABLED; + break; + default: + break; + } + + uc_temp = uc_value & QMCR_CONNECTOR_MASK; + switch (uc_temp) + { + case QMCR_MODEM_CONTROL: + DeviceData.portb &= ~LOOPMODE_BITS; //reset connection bits + DeviceData.portb |= MODEM_CTRL; + break; + case QMCR_ALL_LOOPBACK: + DeviceData.portb &= ~LOOPMODE_BITS; //reset connection bits + DeviceData.portb |= ALL_LOOPBACK; + break; + } + + mydbg(__FILE__"Calling box_set_device with failed\n"); + status = box_set_device(serial, &DeviceData); + if (status < 0) + { + mydbg(__FILE__"box_set_device failed\n"); + return status; + } + + if(uc_value & QMCR_RX_EN_MASK) //This bit (otherwise unused) i'll used to detect whether ATC is selected + { + + mydbg(__FILE__"calling BoxsetATC with DeviceData.porta = 0x%x and DeviceData.portb = 0x%x\n", DeviceData.porta, DeviceData.portb); + status = BoxSetATC(serial, ATC_Mode); + if (status < 0) + { + mydbg(__FILE__"BoxSetATC failed\n"); + return status; + } + } + else + { + + mydbg(__FILE__"calling BoxsetATC with DeviceData.porta = 0x%x and DeviceData.portb = 0x%x\n", DeviceData.porta, DeviceData.portb); + status = BoxSetATC(serial, ATC_DISABLED); + if (status < 0) + { + mydbg(__FILE__"BoxSetATC failed\n"); + return status; + } + } + + + return 0; + + } + + +static int EmulateReadQMCR_Reg(int index, unsigned *uc_value) +{ + struct usb_serial *serial; + int status; + struct qt_get_device_data DeviceData; + __u8 uc_temp; + + *uc_value = 0; + + serial = find_the_box(index); + if(!(serial)) + return -ENOTTY; + + status = box_get_device(serial, &DeviceData); + if (status < 0) + { + mydbg(__FILE__"box_get_device failed\n"); + return status; + } + uc_temp = DeviceData.porta & DUPMODE_BITS; + switch (uc_temp) + { + case FULL_DUPLEX: + *uc_value |= QMCR_FULL_DUPLEX; + break; + case HALF_DUPLEX_RTS: + *uc_value |= QMCR_HALF_DUPLEX_RTS; + break; + case HALF_DUPLEX_DTR: + *uc_value |= QMCR_HALF_DUPLEX_DTR; + break; + default: + break; + } + + uc_temp = DeviceData.portb & LOOPMODE_BITS; //I use this for ATC control se + + switch (uc_temp) + { + case ALL_LOOPBACK: + *uc_value |= QMCR_ALL_LOOPBACK; + break; + case MODEM_CTRL: + *uc_value |= QMCR_MODEM_CONTROL; + break; + default: + break; + + } + return 0; + + + } + +static int __init serqt_usb_init(void) +{ + int i, result; + int status = 0; + + mydbg("%s\n", __FUNCTION__); + tty_set_operations(&serial_tty_driver, &serial_ops); + result = tty_register_driver(&serial_tty_driver); + if (result) { + mydbg("tty_register_driver failed error = 0x%x", result); + return result; + } + + /* Initalize our global data */ + for (i = 0; i < SERIAL_TTY_MINORS; ++i) + serial_table[i] = NULL; + + /* register this driver with the USB subsystem */ + result = usb_register(&serqt_usb_driver); + if (result < 0) { + err("usb_register failed for the "__FILE__" driver. Error number %d", result); + return result; + } + status = 0; // Dynamic assignment of major number + major_number = register_chrdev(status, "SerialQT_USB", &serialqt_usb_fops); + if (major_number < 0) { + mydbg(KERN_DEBUG"No devices found \n\n"); + return -EBUSY; + } else + mydbg(KERN_DEBUG"SerQT_USB major number assignment = %d \n\n", major_number); + + printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION); + return 0; +} + +static void __exit serqt_usb_exit(void) +{ + /* deregister this driver with the USB subsystem */ + usb_deregister(&serqt_usb_driver); + tty_unregister_driver(&serial_tty_driver); + unregister_chrdev(major_number, "SerialQT_USB"); +} + +module_init(serqt_usb_init); +module_exit(serqt_usb_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); |