diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/Makefile | 1 | ||||
| -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/TODO | 8 | ||||
| -rw-r--r-- | drivers/staging/serqt_usb/serqt_usb.c | 2655 |
5 files changed, 0 insertions, 2674 deletions
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index b0e0c60c1332..6b07f4381023 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -40,7 +40,6 @@ obj-$(CONFIG_IDE_PHISON) += phison/ obj-$(CONFIG_PLAN9AUTH) += p9auth/ obj-$(CONFIG_HECI) += heci/ obj-$(CONFIG_LINE6_USB) += line6/ -obj-$(CONFIG_USB_SERIAL_QUATECH_ESU100) += serqt_usb/ obj-$(CONFIG_USB_SERIAL_QUATECH2) += serqt_usb2/ obj-$(CONFIG_OCTEON_ETHERNET) += octeon/ obj-$(CONFIG_VT6655) += vt6655/ diff --git a/drivers/staging/serqt_usb/Kconfig b/drivers/staging/serqt_usb/Kconfig deleted file mode 100644 index cc1af5df40d7..000000000000 --- a/drivers/staging/serqt_usb/Kconfig +++ /dev/null @@ -1,9 +0,0 @@ -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 deleted file mode 100644 index 4fd1da275e8d..000000000000 --- a/drivers/staging/serqt_usb/Makefile +++ /dev/null @@ -1 +0,0 @@ -obj-$(CONFIG_USB_SERIAL_QUATECH_ESU100) += serqt_usb.o diff --git a/drivers/staging/serqt_usb/TODO b/drivers/staging/serqt_usb/TODO deleted file mode 100644 index 34ecca8992d2..000000000000 --- a/drivers/staging/serqt_usb/TODO +++ /dev/null @@ -1,8 +0,0 @@ -Things to do for this driver to get merged into the main portion of the -kernel: - - checkpatch cleanups - - sparse clean - - port to the usb-serial layer instead of doing it all on its - own. - -Send patches to Greg Kroah-Hartman <greg@kroah.com> diff --git a/drivers/staging/serqt_usb/serqt_usb.c b/drivers/staging/serqt_usb/serqt_usb.c deleted file mode 100644 index 27f78bddad68..000000000000 --- a/drivers/staging/serqt_usb/serqt_usb.c +++ /dev/null @@ -1,2655 +0,0 @@ -/* - * 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/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 qt_open(struct tty_struct *tty, 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 tty_struct *tty, 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 tty_struct *tty, struct usb_serial_port *port, - 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 tty_struct *tty, struct usb_serial_port *port, - struct file *file, unsigned int cmd, unsigned long arg); -static void qt_set_termios(struct tty_struct *tty, - struct usb_serial_port *port, - struct ktermios *old_termios); -static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int index, - int bSet); -static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 index); -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); -static 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 tty_struct *tty, struct usb_serial_port *port, - struct file *file, unsigned int value); - -static int qt_tiocmget(struct tty_struct *tty, 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, - .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 const 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", __func__); - - /* 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", - __func__, 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", __func__); - - usb_set_intfdata(interface, serial); - return 0; - -probe_error: - - for (i = 0; i < num_bulk_in; ++i) { - port = &serial->port[i]; - usb_free_urb(port->read_urb); - kfree(port->bulk_in_buffer); - } - for (i = 0; i < num_bulk_out; ++i) { - port = &serial->port[i]; - usb_free_urb(port->write_urb); - kfree(port->bulk_out_buffer); - kfree(port->xfer_to_tty_buffer); - } - for (i = 0; i < num_interrupt_in; ++i) { - port = &serial->port[i]; - usb_free_urb(port->interrupt_in_urb); - kfree(port->interrupt_in_buffer); - } - - /* return the minor range that this device had */ - return_serial(serial); - mydbg("Exit fail %s\n", __func__); - - /* 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", __func__); - - 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", __func__, 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; - - serial = kmalloc(sizeof(struct usb_serial), GFP_KERNEL); - if (!serial) { - err("%s - Out of memory", __func__); - return NULL; - } - memset(serial, 0, sizeof(struct usb_serial)); - serial_table[i] = serial; - *minor = i; - mydbg("%s - minor base = %d\n", __func__, *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 index, - 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 = private; - struct usb_serial *serial = get_usb_serial(port, __func__); - struct tty_struct *tty = port->tty; - unsigned char *data = port->read_urb->transfer_buffer; - unsigned int index; - struct urb *urb = port->read_urb; - unsigned int RxCount = urb->actual_length; - int i, result; - int flag, flag_data; - - /* index = MINOR(port->tty->device) - serial->minor; */ - index = tty->index - serial->minor; - - mydbg("%s - port %d\n", __func__, port->number); - mydbg("%s - port->RxHolding = %d\n", __func__, port->RxHolding); - - if (port_paranoia_check(port, __func__) != 0) { - mydbg("%s - port_paranoia_check, exiting\n", __func__); - port->ReadBulkStopped = 1; - return; - } - - if (!serial) { - mydbg("%s - bad serial pointer, exiting\n", __func__); - return; - } - if (port->closePending == 1) { - /* Were closing , stop reading */ - mydbg("%s - (port->closepending == 1\n", __func__); - 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", - __func__, urb->status); - return; - } - - tty = port->tty; - mydbg("%s - port %d, tty =0x%p\n", __func__, 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; - } - if (flag == 1) - continue; - } - - if (tty && urb->actual_length) { - tty_buffer_request_room(tty, 1); - tty_insert_flip_string(tty, (data + i), 1); - } - - } - tty_flip_buffer_push(tty); - } - - /* 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", - __func__, result); - else { - if (tty && RxCount) - flip_that(tty, index, 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", - __func__, 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", __func__); - 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]; - usb_unlink_urb(port->read_urb); - usb_free_urb(port->read_urb); - kfree(port->bulk_in_buffer); - } - for (i = 0; i < serial->num_bulk_out; ++i) { - port = &serial->port[i]; - usb_unlink_urb(port->write_urb); - usb_free_urb(port->write_urb); - kfree(port->bulk_out_buffer); - } - for (i = 0; i < serial->num_interrupt_in; ++i) { - port = &serial->port[i]; - usb_unlink_urb(port->interrupt_in_urb); - usb_free_urb(port->interrupt_in_urb); - 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", __func__); - - /* 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, __func__)) - 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", __func__); - - port->RxHolding = 0; - mydbg("%s port->RxHolding = 0\n", __func__); - - retval = qt_open(tty, port, filp); - } - - if (retval) - port->open_count = 0; - mydbg("%s returning port->closePending = %d\n", __func__, - port->closePending); - - up(&port->sem); - return retval; -} - -/***************************************************************************** - *device's specific driver functions - *****************************************************************************/ -static int qt_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) -{ - struct usb_serial *serial = port->serial; - int result = 0; - unsigned int index; - 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, __func__)) - return -ENODEV; - - mydbg("%s - port %d\n", __func__, port->number); - - index = 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", __func__, - serial->num_OpenCount); - /* Open uart channel */ - - /* Port specific setups */ - status = BoxOPenCloseChannel(serial, index, 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, index, 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(tty, 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", - __func__, result); - port->ReadBulkStopped = 1; - } - - } - - return result; -} - -static void serial_close(struct tty_struct *tty, struct file *filp) -{ - struct usb_serial_port *port = - tty->driver_data; - struct usb_serial *serial = get_usb_serial(port, __func__); - - if (!serial) - return; - - down(&port->sem); - - mydbg("%s - port %d\n", __func__, 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", __func__); - goto exit; - } - - --port->open_count; - if (port->open_count <= 0) { - port->closePending = 1; - mydbg("%s - port->closePending = 1\n", __func__); - - if (serial->dev) { - qt_close(tty, port, filp); - port->open_count = 0; - } - } - - } - -exit: - up(&port->sem); - - mydbg("%s - %d return\n", __func__, port->number); - -} - -static void qt_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) -{ - unsigned long jift = jiffies + 10 * HZ; - u8 lsr, mcr; - struct usb_serial *serial = port->serial; - int status; - unsigned int index; - - struct qt_open_channel_data ChannelData; - status = 0; - lsr = 0; - - mydbg("%s - port %d\n", __func__, port->number); - index = 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, index, LINE_STATUS_REGISTER, &lsr); - if (status < 0) { - mydbg(__FILE__ "box_get_device failed\n"); - break; - } - - if ((lsr & SERIAL_LSR_TEMT) - && (port->ReadBulkStopped == 1)) - break; - schedule(); - - } - while (jiffies <= jift); - - if (jiffies > jift) - mydbg("%s - port %d timout of checking transmitter empty\n", - __func__, port->number); - else - mydbg("%s - port %d checking transmitter empty succeded\n", - __func__, port->number); - - status = - BoxGetRegister(serial, index, MODEM_CONTROL_REGISTER, - &mcr); - mydbg(__FILE__ "BoxGetRegister MCR = 0x%x.\n", mcr); - - if (status >= 0) { - mcr &= ~(SERIAL_MCR_DTR | SERIAL_MCR_RTS); - /* status = BoxSetRegister(serial, index, MODEM_CONTROL_REGISTER, mcr); */ - } - - /* Close uart channel */ - status = BoxOPenCloseChannel(serial, index, 0, &ChannelData); - if (status < 0) - mydbg("%s - port %d BoxOPenCloseChannel failed.\n", - __func__, port->number); - - serial->num_OpenCount--; - -} - -static int serial_write(struct tty_struct *tty, const unsigned char *buf, - int count) -{ - struct usb_serial_port *port = tty->driver_data; - struct usb_serial *serial; - int retval = -EINVAL; - unsigned int index; - - serial = get_usb_serial(port, __func__); - if (serial == NULL) - return -ENODEV; - /* This can happen if we get disconnected a */ - if (port->open_count == 0) - return -ENODEV; - index = tty->index - serial->minor; - - mydbg("%s - port %d, %d byte(s)\n", __func__, port->number, count); - mydbg("%s - port->RxHolding = %d\n", __func__, port->RxHolding); - - if (!port->open_count) { - mydbg("%s - port not opened\n", __func__); - goto exit; - } - - retval = qt_write(tty, port, buf, count); - -exit: - return retval; -} - -static int qt_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - int result; - unsigned int index; - struct usb_serial *serial = get_usb_serial(port, __func__); - - if (serial == NULL) - return -ENODEV; - - mydbg("%s - port %d\n", __func__, port->number); - - if (count == 0) { - mydbg("%s - write request of 0 bytes\n", __func__); - return 0; - } - - index = 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", __func__); - return 0; - } - - count = - (count > port->bulk_out_size) ? port->bulk_out_size : count; - memcpy(port->write_urb->transfer_buffer, buf, count); - - /* usb_serial_debug_data(__FILE__, __func__, 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", - __func__, 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, __func__); - - mydbg("%s - port %d\n", __func__, port->number); - - if (!serial) { - mydbg("%s - bad serial pointer, exiting\n", __func__); - return; - } - - if (urb->status) { - mydbg("%s - nonzero write bulk status received: %d\n", - __func__, 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, __func__); - struct tty_struct *tty; - - mydbg("%s - port %d\n", __func__, 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", __func__); - (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 = tty->driver_data; - struct usb_serial *serial = get_usb_serial(port, __func__); - int retval = -EINVAL; - - if (!serial) - return -ENODEV; - - down(&port->sem); - - mydbg("%s - port %d\n", __func__, port->number); - - if (!port->open_count) { - mydbg("%s - port not open\n", __func__); - 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", __func__); - return -ENODEV; - } - - mydbg("%s - port %d\n", __func__, port->number); - - if (serial->num_bulk_out) { - if (port->write_urb->status != -EINPROGRESS) - room = port->bulk_out_size; - } - - mydbg("%s - returns %d\n", __func__, room); - return room; -} -static int serial_chars_in_buffer(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct usb_serial *serial = get_usb_serial(port, __func__); - int retval = -EINVAL; - - if (!serial) - return -ENODEV; - - down(&port->sem); - - mydbg("%s = port %d\n", __func__, port->number); - - if (!port->open_count) { - mydbg("%s - port not open\n", __func__); - 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", __func__, 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", __func__, 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 = tty->driver_data; - struct usb_serial *serial = get_usb_serial(port, __func__); - int retval = -ENODEV; - unsigned int index; - mydbg("In %s \n", __func__); - - if (!serial) - return -ENODEV; - - index = tty->index - serial->minor; - - down(&port->sem); - - mydbg("%s - port %d \n", __func__, port->number); - mydbg("%s - port->RxHolding = %d\n", __func__, port->RxHolding); - - if (!port->open_count) { - mydbg("%s - port not open\n", __func__); - goto exit; - } - - retval = qt_tiocmset(tty, port, file, set); - -exit: - up(&port->sem); - return retval; -} - -static int qt_tiocmset(struct tty_struct *tty, struct usb_serial_port *port, - struct file *file, unsigned int value) -{ - - u8 mcr; - int status; - unsigned int index; - struct usb_serial *serial = get_usb_serial(port, __func__); - - if (serial == NULL) - return -ENODEV; - - mydbg("%s - port %d\n", __func__, port->number); - - /**************************************************************************************/ - /** TIOCMGET - */ - index = tty->index - serial->minor; - status = - BoxGetRegister(port->serial, index, MODEM_CONTROL_REGISTER, - &mcr); - if (status < 0) - return -ESPIPE; - - /* - * Turn off the RTS and DTR and loopbcck and then only turn on what was - * asked for - */ - mcr &= ~(SERIAL_MCR_RTS | SERIAL_MCR_DTR | SERIAL_MCR_LOOP); - if (value & TIOCM_RTS) - mcr |= SERIAL_MCR_RTS; - if (value & TIOCM_DTR) - mcr |= SERIAL_MCR_DTR; - if (value & TIOCM_LOOP) - mcr |= SERIAL_MCR_LOOP; - - status = - BoxSetRegister(port->serial, index, MODEM_CONTROL_REGISTER, - mcr); - if (status < 0) - return -ESPIPE; - else - return 0; -} - -static int serial_tiocmget(struct tty_struct *tty, struct file *file) -{ - - struct usb_serial_port *port = tty->driver_data; - struct usb_serial *serial = get_usb_serial(port, __func__); - int retval = -ENODEV; - unsigned int index; - mydbg("In %s \n", __func__); - - if (!serial) - return -ENODEV; - - index = tty->index - serial->minor; - - down(&port->sem); - - mydbg("%s - port %d\n", __func__, port->number); - mydbg("%s - port->RxHolding = %d\n", __func__, port->RxHolding); - - if (!port->open_count) { - mydbg("%s - port not open\n", __func__); - goto exit; - } - - retval = qt_tiocmget(tty, port, file); - -exit: - up(&port->sem); - return retval; -} - -static int qt_tiocmget(struct tty_struct *tty, - struct usb_serial_port *port, struct file *file) -{ - - u8 mcr; - u8 msr; - unsigned int result = 0; - int status; - unsigned int index; - - struct usb_serial *serial = get_usb_serial(port, __func__); - if (serial == NULL) - return -ENODEV; - - mydbg("%s - port %d, tty =0x%p\n", __func__, port->number, tty); - - /**************************************************************************************/ - /** TIOCMGET - */ - index = tty->index - serial->minor; - status = - BoxGetRegister(port->serial, index, MODEM_CONTROL_REGISTER, - &mcr); - if (status >= 0) { - status = - BoxGetRegister(port->serial, index, - MODEM_STATUS_REGISTER, &msr); - - } - - if (status >= 0) { - result = ((mcr & SERIAL_MCR_DTR) ? TIOCM_DTR : 0) - /* DTR IS SET */ - | ((mcr & SERIAL_MCR_RTS) ? TIOCM_RTS : 0) - /* RTS IS SET */ - | ((msr & SERIAL_MSR_CTS) ? TIOCM_CTS : 0) - /* CTS is set */ - | ((msr & SERIAL_MSR_CD) ? TIOCM_CAR : 0) - /* Carrier detect is set */ - | ((msr & SERIAL_MSR_RI) ? TIOCM_RI : 0) - /* Ring indicator set */ - | ((msr & SERIAL_MSR_DSR) ? TIOCM_DSR : 0); - /* DSR is set */ - return result; - - } else - return -ESPIPE; -} - -static int serial_ioctl(struct tty_struct *tty, struct file *file, - unsigned int cmd, unsigned long arg) -{ - - struct usb_serial_port *port = tty->driver_data; - struct usb_serial *serial = get_usb_serial(port, __func__); - int retval = -ENODEV; - unsigned int index; - mydbg("In %s \n", __func__); - - if (!serial) - return -ENODEV; - - index = tty->index - serial->minor; - - down(&port->sem); - - mydbg("%s - port %d, cmd 0x%.4x\n", __func__, port->number, cmd); - mydbg("%s - port->RxHolding = %d\n", __func__, port->RxHolding); - - if (!port->open_count) { - mydbg("%s - port not open\n", __func__); - goto exit; - } - - retval = qt_ioctl(tty, port, file, cmd, arg); - -exit: - up(&port->sem); - return retval; -} -static int qt_ioctl(struct tty_struct *tty, struct usb_serial_port *port, - struct file *file, unsigned int cmd, unsigned long arg) -{ - __u8 mcr; - __u8 msr; - unsigned short prev_msr; - unsigned int value, result = 0; - int status; - unsigned int index; - - struct usb_serial *serial = get_usb_serial(port, __func__); - if (serial == NULL) - return -ENODEV; - - mydbg("%s - port %d, tty =0x%p\n", __func__, port->number, tty); - - /* TIOCMGET */ - index = tty->index - serial->minor; - - if (cmd == TIOCMIWAIT) { - DECLARE_WAITQUEUE(wait, current); - prev_msr = 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 = port->shadowMSR & SERIAL_MSR_MASK; - if (msr == prev_msr) - return -EIO; /* no change error */ - - if ((arg & TIOCM_RNG - && ((prev_msr & SERIAL_MSR_RI) == - (msr & SERIAL_MSR_RI))) - || (arg & TIOCM_DSR - && ((prev_msr & SERIAL_MSR_DSR) == - (msr & SERIAL_MSR_DSR))) - || (arg & TIOCM_CD - && ((prev_msr & SERIAL_MSR_CD) == - (msr & SERIAL_MSR_CD))) - || (arg & TIOCM_CTS - && ((prev_msr & SERIAL_MSR_CTS) == - (msr & SERIAL_MSR_CTS)))) { - return 0; - } - - } - - } - mydbg("%s -No ioctl for that one. port = %d\n", __func__, - port->number); - - return -ENOIOCTLCMD; -} - -static void serial_set_termios(struct tty_struct *tty, struct ktermios *old) -{ - struct usb_serial_port *port = - tty->driver_data; - struct usb_serial *serial = get_usb_serial(port, __func__); - - if (!serial) - return; - - down(&port->sem); - - mydbg("%s - port %d\n", __func__, port->number); - - if (!port->open_count) { - mydbg("%s - port not open\n", __func__); - goto exit; - } - - /* pass on to the driver specific version of this function if it is available */ - qt_set_termios(tty, port, old); - -exit: - up(&port->sem); -} - -static void qt_set_termios(struct tty_struct *tty, - struct usb_serial_port *port, - struct ktermios *old_termios) -{ - unsigned int cflag; - int baud, divisor, remainder; - unsigned char new_LCR = 0; - int status; - struct usb_serial *serial; - __u16 index; - __u16 tmp, tmp2; - - mydbg("%s - port %d\n", __func__, port->number); - - tmp = port->tty->index; - mydbg("%s - MINOR(port->tty->index) = %d\n", __func__, tmp); - - serial = port->serial; - tmp2 = serial->minor; - mydbg("%s - serial->minor = %d\n", __func__, tmp2); - - index = port->tty->index - serial->minor; - - cflag = tty->termios->c_cflag; - - mydbg("%s - 3\n", __func__); - - switch (cflag) { - case CS5: - new_LCR |= SERIAL_5_DATA; - break; - case CS6: - new_LCR |= SERIAL_6_DATA; - break; - case CS7: - new_LCR |= SERIAL_7_DATA; - break; - default: - case CS8: - new_LCR |= SERIAL_8_DATA; - break; - } - - /* Parity stuff */ - if (cflag & PARENB) { - if (cflag & PARODD) - new_LCR |= SERIAL_ODD_PARITY; - else - new_LCR |= SERIAL_EVEN_PARITY; - } - if (cflag & CSTOPB) - new_LCR |= SERIAL_TWO_STOPB; - else - new_LCR |= SERIAL_TWO_STOPB; - - mydbg("%s - 4\n", __func__); - /* 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", __func__, 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, index, (unsigned short)divisor, new_LCR); - 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", __func__, - port->number); - - /* Enable RTS/CTS flow control */ - status = BoxSetHW_FlowCtrl(serial, index, 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", __func__, - port->number); - - status = BoxSetHW_FlowCtrl(serial, index, 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, index, stop_char, - start_char); - if (status < 0) - mydbg(__FILE__ "BoxSetSW_FlowCtrl (enabled) failed\n"); - - } else { - /* disable SW flow control */ - status = BoxDisable_SW_FlowCtrl(serial, index); - if (status < 0) - mydbg(__FILE__ "BoxSetSW_FlowCtrl (diabling) failed\n"); - - } - tty->termios->c_cflag &= ~CMSPAR; - /* FIXME: Error cases should be returning the actual bits changed only */ -} - -/**************************************************************************** -* 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", __func__, 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 opening... */ - if (OpenClose == 1) { - 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 index, - int bSet) -{ - __u8 mcr = 0; - __u8 msr = 0, MOUT_Value = 0; - struct usb_serial_port *port; - unsigned int status; - - port = serial->port; - - if (bSet == 1) { - /* flow control, box will clear RTS line to prevent remote */ - mcr = SERIAL_MCR_RTS; - } /* device from xmitting more chars */ - else { - /* no flow control to remote device */ - mcr = 0; - - } - MOUT_Value = mcr << 8; - - if (bSet == 1) { - /* flow control, box will inhibit xmit data if CTS line is - * asserted */ - msr = SERIAL_MSR_CTS; - } else { - /* Box will not inhimbe xmit data due to CTS line */ - msr = 0; - } - MOUT_Value |= msr; - - status = - usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - QT_HW_FLOW_CONTROL_MASK, 0x40, MOUT_Value, - index, NULL, 0, 300); - return status; - -} - -static int BoxSetSW_FlowCtrl(struct usb_serial *serial, __u16 index, - 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, - index, NULL, 0, 300); - return result; - -} -static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 index) -{ - int result; - - result = - usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - QT_SW_FLOW_CONTROL_DISABLE, 0x40, 0, index, - NULL, 0, 300); - return result; - -} - -static void serial_throttle(struct tty_struct *tty) -{ - struct usb_serial_port *port = - tty->driver_data; - struct usb_serial *serial = get_usb_serial(port, __func__); - mydbg("%s - port %d\n", __func__, port->number); - - if (!serial) - return; - - down(&port->sem); - - if (!port->open_count) { - mydbg("%s - port not open\n", __func__); - 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", __func__); - -exit: - up(&port->sem); - return; -} - -static void serial_unthrottle(struct tty_struct *tty) -{ - struct usb_serial_port *port = - tty->driver_data; - struct usb_serial *serial = get_usb_serial(port, __func__); - unsigned int result; - - if (!serial) - return; - down(&port->sem); - - mydbg("%s - port %d\n", __func__, port->number); - - if (!port->open_count) { - mydbg("%s - port not open\n", __func__); - goto exit; - } - - if (port->RxHolding == 1) { - mydbg("%s -port->RxHolding == 1\n", __func__); - - port->RxHolding = 0; - mydbg("%s - port->RxHolding = 0\n", __func__); - - /* 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", - __func__, result); - } - } -exit: - up(&port->sem); - return; - -} - -static int serial_break(struct tty_struct *tty, int break_state) -{ - struct usb_serial_port *port = tty->driver_data; - struct usb_serial *serial = get_usb_serial(port, __func__); - u16 index, onoff; - unsigned int result; - - index = tty->index - serial->minor; - if (!serial) - return -ENODEV; - - if (break_state == -1) - onoff = 1; - else - onoff = 0; - - down(&port->sem); - - mydbg("%s - port %d\n", __func__, port->number); - - if (!port->open_count) { - mydbg("%s - port not open\n", __func__); - goto exit; - } - - result = - usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - QT_BREAK_CONTROL, 0x40, onoff, index, - NULL, 0, 300); - -exit: - up(&port->sem); - return 0; -} - -static 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; - index = arg >> 16; - counts = 0; - - ucOPR_NewValue = arg; - - err = EmulateWriteQMCR_Reg(index, ucOPR_NewValue); - break; - - case SERIALQT_READ_QMCR: - err = -ENOTTY; - 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; - 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; - mydbg(KERN_DEBUG "SERIALQT_IS422_EXTENDED \n"); - 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", __func__, - index, serial); - for (counts = 0; serqt_422_table[counts] != 0; counts++) { - - mydbg - ("%s serial->product = = 0x%x, serqt_422_table[counts] = 0x%x\n", - __func__, serial->product, - serqt_422_table[counts]); - if (serial->product == serqt_422_table[counts]) { - err = 0; - - mydbg - ("%s found match for 422extended\n", - __func__); - break; - } - } - } - break; - - default: - err = -ENOTTY; - } - - mydbg("%s returning err = 0x%x\n", __func__, 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", - __func__, 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", - __func__, 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", - __func__, 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", __func__, 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", __func__, 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; - } - - /* This bit (otherwise unused) i'll used to detect whether ATC is - * selected */ - if (uc_value & QMCR_RX_EN_MASK) { - - 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; - } - - /* I use this for ATC control se */ - uc_temp = DeviceData.portb & LOOPMODE_BITS; - - 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", __func__); - 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"); |