+++ /dev/null
-/*
- * 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/errno.h>
-#include <linux/slab.h>
-#include <linux/tty.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/module.h>
-#include <linux/serial.h>
-#include <linux/usb.h>
-#include <linux/usb/serial.h>
-#include <linux/uaccess.h>
-
-/* 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 QUATECH_SSU200 0xC030 /* SSU200 */
-#define QUATECH_DSU100 0xC040 /* DSU100 */
-#define QUATECH_DSU200 0xC050 /* DSU200 */
-#define QUATECH_QSU100 0xC060 /* QSU100 */
-#define QUATECH_QSU200 0xC070 /* QSU200 */
-#define QUATECH_ESU100A 0xC080 /* ESU100A */
-#define QUATECH_ESU100B 0xC081 /* ESU100B */
-#define QUATECH_ESU200A 0xC0A0 /* ESU200A */
-#define QUATECH_ESU200B 0xC0A1 /* ESU200B */
-#define QUATECH_HSU100A 0xC090 /* HSU100A */
-#define QUATECH_HSU100B 0xC091 /* HSU100B */
-#define QUATECH_HSU100C 0xC092 /* HSU100C */
-#define QUATECH_HSU100D 0xC093 /* HSU100D */
-#define QUATECH_HSU200A 0xC0B0 /* HSU200A */
-#define QUATECH_HSU200B 0xC0B1 /* HSU200B */
-#define QUATECH_HSU200C 0xC0B2 /* HSU200C */
-#define QUATECH_HSU200D 0xC0B3 /* HSU200D */
-
-#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 USBD_TRANSFER_DIRECTION_IN 0xc0
-#define USBD_TRANSFER_DIRECTION_OUT 0x40
-
-#define MAX_BAUD_RATE 460800
-#define MAX_BAUD_REMAINDER 4608
-
-#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 DEFAULT_DIVISOR 0x30 /* gives 9600 baud rate */
-#define DEFAULT_LCR SERIAL_8_DATA /* 8, none , 1 */
-
-#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_MSR_CTS 0x10
-#define SERIAL_MSR_CD 0x80
-#define SERIAL_MSR_RI 0x40
-#define SERIAL_MSR_DSR 0x20
-#define SERIAL_MSR_MASK 0xf0
-
-#define PREFUFF_LEVEL_CONSERVATIVE 128
-#define ATC_DISABLED 0x0
-
-#define RR_BITS 0x03 /* for clearing clock bits */
-#define DUPMODE_BITS 0xc0
-#define CLKS_X4 0x02
-
-#define LOOPMODE_BITS 0x41 /* LOOP1 = b6, LOOP0 = b0 (PORT B) */
-#define ALL_LOOPBACK 0x01
-#define MODEM_CTRL 0x40
-#define RS232_MODE 0x00
-
-static const struct usb_device_id id_table[] = {
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU200)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_DSU100)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_DSU200)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_QSU100)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_QSU200)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU100A)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU100B)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU200A)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU200B)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU100A)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU100B)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU100C)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU100D)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU200A)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU200B)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU200C)},
- {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_HSU200D)},
- {} /* Terminating entry */
-};
-MODULE_DEVICE_TABLE(usb, id_table);
-
-struct qt_get_device_data {
- __u8 porta;
- __u8 portb;
- __u8 portc;
-};
-
-struct qt_open_channel_data {
- __u8 line_status;
- __u8 modem_status;
-};
-
-struct quatech_port {
- int port_num; /* number of the port */
- struct urb *write_urb; /* write URB for this port */
- struct urb *read_urb; /* read URB for this port */
- struct urb *int_urb;
-
- __u8 shadow_lcr; /* last LCR value received */
- __u8 shadow_mcr; /* last MCR value received */
- __u8 shadow_msr; /* last MSR value received */
- __u8 shadow_lsr; /* last LSR value received */
- char open_ports;
-
- /* Used for TIOCMIWAIT */
- wait_queue_head_t msr_wait;
- char prev_status, diff_status;
-
- wait_queue_head_t wait;
-
- struct async_icount icount;
-
- struct usb_serial_port *port; /* owner of this object */
- struct qt_get_device_data device_data;
- struct mutex lock;
- bool read_urb_busy;
- int rx_holding;
- int read_bulk_stopped;
- char close_pending;
-};
-
-static int port_paranoia_check(struct usb_serial_port *port,
- const char *function)
-{
- if (!port) {
- pr_debug("%s - port == NULL", function);
- return -1;
- }
- if (!port->serial) {
- pr_debug("%s - port->serial == NULL\n", function);
- return -1;
- }
-
- return 0;
-}
-
-static int serial_paranoia_check(struct usb_serial *serial,
- const char *function)
-{
- if (!serial) {
- pr_debug("%s - serial == NULL\n", function);
- return -1;
- }
-
- if (!serial->type) {
- pr_debug("%s - serial->type == NULL!", function);
- return -1;
- }
-
- return 0;
-}
-
-static inline struct quatech_port *qt_get_port_private(struct usb_serial_port
- *port)
-{
- return (struct quatech_port *)usb_get_serial_port_data(port);
-}
-
-static inline void qt_set_port_private(struct usb_serial_port *port,
- struct quatech_port *data)
-{
- usb_set_serial_port_data(port, (void *)data);
-}
-
-static 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;
-}
-
-static void process_line_status(struct quatech_port *qt_port,
- unsigned char line_status)
-{
-
- qt_port->shadow_lsr =
- line_status & (SERIAL_LSR_OE | SERIAL_LSR_PE | SERIAL_LSR_FE |
- SERIAL_LSR_BI);
-}
-
-static void process_modem_status(struct quatech_port *qt_port,
- unsigned char modem_status)
-{
-
- qt_port->shadow_msr = modem_status;
- wake_up_interruptible(&qt_port->wait);
-}
-
-static void process_rx_char(struct usb_serial_port *port, unsigned char data)
-{
- struct urb *urb = port->read_urb;
-
- if (urb->actual_length)
- tty_insert_flip_char(&port->port, data, TTY_NORMAL);
-}
-
-static void qt_write_bulk_callback(struct urb *urb)
-{
- int status;
- struct quatech_port *quatech_port;
-
- status = urb->status;
-
- if (status) {
- dev_dbg(&urb->dev->dev,
- "nonzero write bulk status received:%d\n", status);
- return;
- }
-
- quatech_port = urb->context;
-
- tty_port_tty_wakeup(&quatech_port->port->port);
-}
-
-static void qt_interrupt_callback(struct urb *urb)
-{
- /* FIXME */
-}
-
-static void qt_status_change_check(struct urb *urb,
- struct quatech_port *qt_port,
- struct usb_serial_port *port)
-{
- int flag, i;
- unsigned char *data = urb->transfer_buffer;
- unsigned int rx_count = urb->actual_length;
-
- for (i = 0; i < rx_count; ++i) {
- /* Look ahead code here */
- if ((i <= (rx_count - 3)) && (data[i] == 0x1b)
- && (data[i + 1] == 0x1b)) {
- flag = 0;
- switch (data[i + 2]) {
- case 0x00:
- if (i > (rx_count - 4)) {
- dev_dbg(&port->dev,
- "Illegal escape seuences in received data\n");
- break;
- }
-
- process_line_status(qt_port, data[i + 3]);
-
- i += 3;
- flag = 1;
- break;
-
- case 0x01:
- if (i > (rx_count - 4)) {
- dev_dbg(&port->dev,
- "Illegal escape seuences in received data\n");
- break;
- }
-
- process_modem_status(qt_port, data[i + 3]);
-
- i += 3;
- flag = 1;
- break;
-
- case 0xff:
- dev_dbg(&port->dev, "No status sequence.\n");
-
- process_rx_char(port, data[i]);
- process_rx_char(port, data[i + 1]);
-
- i += 2;
- break;
- }
- if (flag == 1)
- continue;
- }
-
- if (urb->actual_length)
- tty_insert_flip_char(&port->port, data[i], TTY_NORMAL);
-
- }
- tty_flip_buffer_push(&port->port);
-}
-
-static void qt_read_bulk_callback(struct urb *urb)
-{
-
- struct usb_serial_port *port = urb->context;
- struct usb_serial *serial = get_usb_serial(port, __func__);
- struct quatech_port *qt_port = qt_get_port_private(port);
- int result;
-
- if (urb->status) {
- qt_port->read_bulk_stopped = 1;
- dev_dbg(&urb->dev->dev,
- "%s - nonzero write bulk status received: %d\n",
- __func__, urb->status);
- return;
- }
-
- dev_dbg(&port->dev,
- "%s - port->rx_holding = %d\n", __func__, qt_port->rx_holding);
-
- if (port_paranoia_check(port, __func__) != 0) {
- qt_port->read_bulk_stopped = 1;
- return;
- }
-
- if (!serial)
- return;
-
- if (qt_port->close_pending == 1) {
- /* Were closing , stop reading */
- dev_dbg(&port->dev,
- "%s - (qt_port->close_pending == 1\n", __func__);
- qt_port->read_bulk_stopped = 1;
- return;
- }
-
- /*
- * rx_holding is asserted by throttle, if we assert it, we're not
- * receiving any more characters and let the box handle the flow
- * control
- */
- if (qt_port->rx_holding == 1) {
- qt_port->read_bulk_stopped = 1;
- return;
- }
-
- if (urb->status) {
- qt_port->read_bulk_stopped = 1;
-
- dev_dbg(&port->dev,
- "%s - nonzero read bulk status received: %d\n",
- __func__, urb->status);
- return;
- }
-
- if (urb->actual_length)
- qt_status_change_check(urb, qt_port, port);
-
- /* 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)
- dev_dbg(&port->dev,
- "%s - failed resubmitting read urb, error %d",
- __func__, result);
- else {
- if (urb->actual_length) {
- tty_flip_buffer_push(&port->port);
- tty_schedule_flip(&port->port);
- }
- }
-
- schedule_work(&port->work);
-}
-
-/*
- * qt_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 qt_get_device(struct usb_serial *serial,
- struct qt_get_device_data *device_data)
-{
- int result;
- unsigned char *transfer_buffer;
-
- transfer_buffer =
- kmalloc(sizeof(struct qt_get_device_data), 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,
- sizeof(struct qt_get_device_data), 300);
- if (result > 0)
- memcpy(device_data, transfer_buffer,
- sizeof(struct qt_get_device_data));
- kfree(transfer_buffer);
-
- return result;
-}
-
-/****************************************************************************
- * box_set_prebuffer_level
- TELLS BOX WHEN TO ASSERT FLOW CONTROL
- ****************************************************************************/
-static int box_set_prebuffer_level(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;
-}
-
-/****************************************************************************
- * box_set_atc
- TELLS BOX WHEN TO ASSERT automatic transmitter control
- ****************************************************************************/
-static int box_set_atc(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;
-}
-
-/**
- * qt_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 qt_set_device(struct usb_serial *serial,
- struct qt_get_device_data *device_data)
-{
- int result;
- __u16 length;
- __u16 port_settings;
-
- port_settings = ((__u16) (device_data->portb));
- port_settings = (port_settings << 8);
- port_settings += ((__u16) (device_data->porta));
-
- length = sizeof(struct qt_get_device_data);
-
- result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- QT_SET_GET_DEVICE, 0x40, port_settings,
- 0, NULL, 0, 300);
- return result;
-}
-
-static int qt_open_channel(struct usb_serial *serial, __u16 uart_num,
- struct qt_open_channel_data *pdevice_data)
-{
- int result;
-
- result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- QT_OPEN_CLOSE_CHANNEL,
- USBD_TRANSFER_DIRECTION_IN, 1, uart_num,
- pdevice_data,
- sizeof(struct qt_open_channel_data), 300);
-
- return result;
-
-}
-
-static int qt_close_channel(struct usb_serial *serial, __u16 uart_num)
-{
- int result;
-
- result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- QT_OPEN_CLOSE_CHANNEL,
- USBD_TRANSFER_DIRECTION_OUT, 0, uart_num,
- NULL, 0, 300);
-
- return result;
-
-}
-
-/****************************************************************************
-* box_get_register
-* issuse a GET_REGISTER vendor-spcific request on the default control pipe
-* If successful, fills in the p_value with the register value asked for
-****************************************************************************/
-static int box_get_register(struct usb_serial *serial, unsigned short uart_num,
- unsigned short register_num, __u8 *p_value)
-{
- 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_num, (void *)p_value, sizeof(*p_value), 300);
-
- return result;
-}
-
-/****************************************************************************
-* box_set_register
-* issuse a GET_REGISTER vendor-spcific request on the default control pipe
-* If successful, fills in the p_value with the register value asked for
-****************************************************************************/
-static int box_set_register(struct usb_serial *serial, unsigned short uart_num,
- unsigned short register_num, unsigned short value)
-{
- int result;
- unsigned short reg_and_byte;
-
- reg_and_byte = value;
- reg_and_byte = reg_and_byte << 8;
- reg_and_byte = reg_and_byte + register_num;
-
-/*
- result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- QT_GET_SET_REGISTER, 0xC0, register_num,
- uart_num, NULL, 0, 300);
-*/
-
- result =
- usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- QT_GET_SET_REGISTER, 0x40, reg_and_byte, uart_num,
- NULL, 0, 300);
-
- return result;
-}
-
-/*
- * qt_setuart
- * issues a SET_UART vendor-specific request on the default control pipe
- * If successful sets baud rate divisor and LCR value
- */
-static int qt_setuart(struct usb_serial *serial, unsigned short uart_num,
- unsigned short default_divisor, unsigned char default_lcr)
-{
- int result;
- unsigned short uart_num_and_lcr;
-
- uart_num_and_lcr = (default_lcr << 8) + uart_num;
-
- result =
- usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- QT_GET_SET_UART, 0x40, default_divisor,
- uart_num_and_lcr, NULL, 0, 300);
-
- return result;
-}
-
-static int box_set_hw_flow_ctrl(struct usb_serial *serial, unsigned int index,
- int b_set)
-{
- __u8 mcr = 0;
- __u8 msr = 0, mout_value = 0;
- unsigned int status;
-
- if (b_set == 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 (b_set == 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 box_set_sw_flow_ctrl(struct usb_serial *serial, __u16 index,
- unsigned char stop_char, unsigned char start_char)
-{
- __u16 n_sw_flow_out;
- int result;
-
- n_sw_flow_out = start_char << 8;
- n_sw_flow_out = (unsigned short)stop_char;
-
- result =
- usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- QT_SW_FLOW_CONTROL_MASK, 0x40, n_sw_flow_out,
- index, NULL, 0, 300);
- return result;
-
-}
-
-static int box_disable_sw_flow_ctrl(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 int qt_startup(struct usb_serial *serial)
-{
- struct device *dev = &serial->dev->dev;
- struct usb_serial_port *port;
- struct quatech_port *qt_port;
- struct qt_get_device_data device_data;
- int i;
- int status;
-
- /* Now setup per port private data */
- for (i = 0; i < serial->num_ports; i++) {
- port = serial->port[i];
- qt_port = kzalloc(sizeof(*qt_port), GFP_KERNEL);
- if (!qt_port) {
- for (--i; i >= 0; i--) {
- port = serial->port[i];
- kfree(usb_get_serial_port_data(port));
- usb_set_serial_port_data(port, NULL);
- }
- return -ENOMEM;
- }
- mutex_init(&qt_port->lock);
-
- usb_set_serial_port_data(port, qt_port);
-
- }
-
- status = qt_get_device(serial, &device_data);
- if (status < 0)
- goto startup_error;
-
- dev_dbg(dev, "device_data.portb = 0x%x\n", device_data.portb);
-
- device_data.portb &= ~FULLPWRBIT;
- dev_dbg(dev, "Changing device_data.portb to 0x%x\n", device_data.portb);
-
- status = qt_set_device(serial, &device_data);
- if (status < 0) {
- dev_dbg(dev, "qt_set_device failed\n");
- goto startup_error;
- }
-
- status = qt_get_device(serial, &device_data);
- if (status < 0) {
- dev_dbg(dev, "qt_get_device failed\n");
- goto startup_error;
- }
-
- switch (le16_to_cpu(serial->dev->descriptor.idProduct)) {
- case QUATECH_DSU100:
- case QUATECH_QSU100:
- case QUATECH_ESU100A:
- case QUATECH_ESU100B:
- case QUATECH_HSU100A:
- case QUATECH_HSU100B:
- case QUATECH_HSU100C:
- case QUATECH_HSU100D:
- device_data.porta &= ~(RR_BITS | DUPMODE_BITS);
- device_data.porta |= CLKS_X4;
- device_data.portb &= ~(LOOPMODE_BITS);
- device_data.portb |= RS232_MODE;
- break;
-
- case QUATECH_SSU200:
- case QUATECH_DSU200:
- case QUATECH_QSU200:
- case QUATECH_ESU200A:
- case QUATECH_ESU200B:
- case QUATECH_HSU200A:
- case QUATECH_HSU200B:
- case QUATECH_HSU200C:
- case QUATECH_HSU200D:
- device_data.porta &= ~(RR_BITS | DUPMODE_BITS);
- device_data.porta |= CLKS_X4;
- device_data.portb &= ~(LOOPMODE_BITS);
- device_data.portb |= ALL_LOOPBACK;
- break;
- default:
- device_data.porta &= ~(RR_BITS | DUPMODE_BITS);
- device_data.porta |= CLKS_X4;
- device_data.portb &= ~(LOOPMODE_BITS);
- device_data.portb |= RS232_MODE;
- break;
-
- }
-
- status = box_set_prebuffer_level(serial); /* sets to
- * default value
- */
- if (status < 0) {
- dev_dbg(dev, "box_set_prebuffer_level failed\n");
- goto startup_error;
- }
-
- status = box_set_atc(serial, ATC_DISABLED);
- if (status < 0) {
- dev_dbg(dev, "box_set_atc failed\n");
- goto startup_error;
- }
-
- dev_dbg(dev, "device_data.portb = 0x%x\n", device_data.portb);
-
- device_data.portb |= NEXT_BOARD_POWER_BIT;
- dev_dbg(dev, "Changing device_data.portb to 0x%x\n", device_data.portb);
-
- status = qt_set_device(serial, &device_data);
- if (status < 0) {
- dev_dbg(dev, "qt_set_device failed\n");
- goto startup_error;
- }
-
- return 0;
-
-startup_error:
- for (i = 0; i < serial->num_ports; i++) {
- port = serial->port[i];
- qt_port = qt_get_port_private(port);
- kfree(qt_port);
- usb_set_serial_port_data(port, NULL);
- }
-
- return -EIO;
-}
-
-static void qt_release(struct usb_serial *serial)
-{
- struct usb_serial_port *port;
- struct quatech_port *qt_port;
- int i;
-
- for (i = 0; i < serial->num_ports; i++) {
- port = serial->port[i];
- if (!port)
- continue;
-
- qt_port = usb_get_serial_port_data(port);
- kfree(qt_port);
- usb_set_serial_port_data(port, NULL);
- }
-
-}
-
-static void qt_submit_urb_from_open(struct usb_serial *serial,
- struct usb_serial_port *port)
-{
- int result;
- struct usb_serial_port *port0 = serial->port[0];
-
- /* set up interrupt urb */
- usb_fill_int_urb(port0->interrupt_in_urb,
- serial->dev,
- usb_rcvintpipe(serial->dev,
- port0->interrupt_in_endpointAddress),
- port0->interrupt_in_buffer,
- port0->interrupt_in_urb->transfer_buffer_length,
- qt_interrupt_callback, serial,
- port0->interrupt_in_urb->interval);
-
- result = usb_submit_urb(port0->interrupt_in_urb,
- GFP_KERNEL);
- if (result) {
- dev_err(&port->dev,
- "%s - Error %d submitting interrupt urb\n",
- __func__, result);
- }
-}
-
-static int qt_open(struct tty_struct *tty,
- struct usb_serial_port *port)
-{
- struct usb_serial *serial;
- struct quatech_port *quatech_port;
- struct quatech_port *port0;
- struct qt_open_channel_data channel_data;
-
- int result;
-
- if (port_paranoia_check(port, __func__))
- return -ENODEV;
-
- serial = port->serial;
-
- if (serial_paranoia_check(serial, __func__))
- return -ENODEV;
-
- quatech_port = qt_get_port_private(port);
- port0 = qt_get_port_private(serial->port[0]);
-
- if (quatech_port == NULL || port0 == NULL)
- return -ENODEV;
-
- usb_clear_halt(serial->dev, port->write_urb->pipe);
- usb_clear_halt(serial->dev, port->read_urb->pipe);
- port0->open_ports++;
-
- result = qt_get_device(serial, &port0->device_data);
-
- /* Port specific setups */
- result = qt_open_channel(serial, port->port_number, &channel_data);
- if (result < 0) {
- dev_dbg(&port->dev, "qt_open_channel failed\n");
- return result;
- }
- dev_dbg(&port->dev, "qt_open_channel completed.\n");
-
-/* FIXME: are these needed? Does it even do anything useful? */
- quatech_port->shadow_lsr = channel_data.line_status &
- (SERIAL_LSR_OE | SERIAL_LSR_PE | SERIAL_LSR_FE | SERIAL_LSR_BI);
-
- quatech_port->shadow_msr = channel_data.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 */
- result = qt_setuart(serial, port->port_number, DEFAULT_DIVISOR,
- DEFAULT_LCR);
- if (result < 0) {
- dev_dbg(&port->dev, "qt_setuart failed\n");
- return result;
- }
- dev_dbg(&port->dev, "qt_setuart completed.\n");
-
- /*
- * Put this here to make it responsive to stty and defaults set by
- * the tty layer
- */
-
- /* Check to see if we've set up our endpoint info yet */
- if (port0->open_ports == 1) {
- if (serial->port[0]->interrupt_in_buffer == NULL)
- qt_submit_urb_from_open(serial, port);
- }
-
- dev_dbg(&port->dev, "minor number is %d\n", port->minor);
- dev_dbg(&port->dev,
- "Bulkin endpoint is %d\n", port->bulk_in_endpointAddress);
- dev_dbg(&port->dev,
- "BulkOut endpoint is %d\n", port->bulk_out_endpointAddress);
- dev_dbg(&port->dev, "Interrupt endpoint is %d\n",
- port->interrupt_in_endpointAddress);
- dev_dbg(&port->dev, "port's number in the device is %d\n",
- quatech_port->port_num);
- quatech_port->read_urb = port->read_urb;
-
- /* set up our bulk in urb */
-
- usb_fill_bulk_urb(quatech_port->read_urb,
- serial->dev,
- usb_rcvbulkpipe(serial->dev,
- port->bulk_in_endpointAddress),
- port->bulk_in_buffer,
- quatech_port->read_urb->transfer_buffer_length,
- qt_read_bulk_callback, quatech_port);
-
- dev_dbg(&port->dev, "qt_open: bulkin endpoint is %d\n",
- port->bulk_in_endpointAddress);
- quatech_port->read_urb_busy = true;
- result = usb_submit_urb(quatech_port->read_urb, GFP_KERNEL);
- if (result) {
- dev_err(&port->dev,
- "%s - Error %d submitting control urb\n",
- __func__, result);
- quatech_port->read_urb_busy = false;
- }
-
- /* initialize our wait queues */
- init_waitqueue_head(&quatech_port->wait);
- init_waitqueue_head(&quatech_port->msr_wait);
-
- /* initialize our icount structure */
- memset(&(quatech_port->icount), 0x00, sizeof(quatech_port->icount));
-
- return 0;
-
-}
-
-static int qt_chars_in_buffer(struct tty_struct *tty)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct usb_serial *serial;
- int chars = 0;
-
- serial = get_usb_serial(port, __func__);
-
- if (serial->num_bulk_out) {
- if (port->write_urb->status == -EINPROGRESS)
- chars = port->write_urb->transfer_buffer_length;
- }
-
- return chars;
-}
-
-static void qt_block_until_empty(struct tty_struct *tty,
- struct quatech_port *qt_port)
-{
- int timeout = HZ / 10;
- int wait = 30;
-
- /* returns if we get a signal, an error, or the buffer is empty */
- while (wait_event_interruptible_timeout(qt_port->wait,
- qt_chars_in_buffer(tty) <= 0,
- timeout) == 0) {
- wait--;
- if (wait == 0) {
- dev_dbg(&qt_port->port->dev, "%s - TIMEOUT", __func__);
- return;
- }
- wait = 30;
- }
-}
-
-static void qt_close(struct usb_serial_port *port)
-{
- struct usb_serial *serial = port->serial;
- struct tty_struct *tty = tty_port_tty_get(&port->port);
- unsigned int index = port->port_number;
- struct quatech_port *qt_port = qt_get_port_private(port);
- struct quatech_port *port0 = qt_get_port_private(serial->port[0]);
-
- /* 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 for transmitter to empty */
- if (serial->dev)
- qt_block_until_empty(tty, qt_port);
- tty_kref_put(tty);
-
- /* Close uart channel */
- if (qt_close_channel(serial, index) < 0)
- dev_dbg(&port->dev, "%s - qt_close_channel failed.\n",
- __func__);
-
- port0->open_ports--;
-
- dev_dbg(&port->dev, "qt_num_open_ports in close%d\n",
- port0->open_ports);
-
- if (port0->open_ports == 0) {
- if (serial->port[0]->interrupt_in_urb) {
- dev_dbg(&port->dev, "Shutdown interrupt_in_urb\n");
- usb_kill_urb(serial->port[0]->interrupt_in_urb);
- }
-
- }
-
- if (qt_port->write_urb) {
- /* if this urb had a transfer buffer already (old tx) free it */
- kfree(qt_port->write_urb->transfer_buffer);
- usb_free_urb(qt_port->write_urb);
- }
-
-}
-
-static int qt_write(struct tty_struct *tty, struct usb_serial_port *port,
- const unsigned char *buf, int count)
-{
- int result;
- struct usb_serial *serial = get_usb_serial(port, __func__);
-
- if (serial == NULL)
- return -ENODEV;
-
- if (count == 0) {
- dev_dbg(&port->dev,
- "%s - write request of 0 bytes\n", __func__);
- return 0;
- }
-
- /* only do something if we have a bulk out endpoint */
- if (serial->num_bulk_out) {
- if (port->write_urb->status == -EINPROGRESS) {
- dev_dbg(&port->dev, "%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);
-
- /* 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)
- dev_dbg(&port->dev,
- "%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 int qt_write_room(struct tty_struct *tty)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct usb_serial *serial;
- struct quatech_port *qt_port;
-
- int retval = -EINVAL;
-
- if (port_paranoia_check(port, __func__))
- return -1;
-
- serial = get_usb_serial(port, __func__);
-
- if (!serial)
- return -ENODEV;
-
- qt_port = qt_get_port_private(port);
-
- mutex_lock(&qt_port->lock);
-
- if (serial->num_bulk_out) {
- if (port->write_urb->status != -EINPROGRESS)
- retval = port->bulk_out_size;
- }
-
- mutex_unlock(&qt_port->lock);
- return retval;
-
-}
-
-static int qt_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct quatech_port *qt_port = qt_get_port_private(port);
- unsigned int index;
- char diff;
-
- dev_dbg(&port->dev, "%s cmd 0x%04x\n", __func__, cmd);
-
- index = port->port_number;
-
- if (cmd == TIOCMIWAIT) {
- while (qt_port != NULL) {
-#if 0
- /* this never wakes up */
- interruptible_sleep_on(&qt_port->msr_wait);
-#endif
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- diff = qt_port->diff_status;
-
- if (diff == 0)
- return -EIO; /* no change => error */
-
- /* Consume all events */
- qt_port->diff_status = 0;
-
- if (((arg & TIOCM_RNG)
- && (diff & SERIAL_MSR_RI))
- || ((arg & TIOCM_DSR)
- && (diff & SERIAL_MSR_DSR))
- || ((arg & TIOCM_CD)
- && (diff & SERIAL_MSR_CD))
- || ((arg & TIOCM_CTS)
- && (diff & SERIAL_MSR_CTS))) {
- return 0;
- }
- }
- return 0;
- }
-
- dev_dbg(&port->dev, "%s -No ioctl for that one.\n", __func__);
- return -ENOIOCTLCMD;
-}
-
-static void qt_set_termios(struct tty_struct *tty,
- struct usb_serial_port *port,
- struct ktermios *old_termios)
-{
- struct ktermios *termios = &tty->termios;
- unsigned char new_lcr = 0;
- unsigned int cflag = termios->c_cflag;
- unsigned int index;
- int baud, divisor, remainder;
- int status;
-
- index = port->port_number;
-
- switch (cflag & CSIZE) {
- 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:
- termios->c_cflag &= ~CSIZE;
- termios->c_cflag |= CS8;
- 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_ONE_STOPB;
-
- dev_dbg(&port->dev, "%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;
-
- dev_dbg(&port->dev, "%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 =
- qt_setuart(port->serial, index, (unsigned short)divisor, new_lcr);
- if (status < 0) {
- dev_dbg(&port->dev, "qt_setuart failed\n");
- return;
- }
-
- /* Now determine flow control */
- if (cflag & CRTSCTS) {
- dev_dbg(&port->dev, "%s - Enabling HW flow control\n",
- __func__);
-
- /* Enable RTS/CTS flow control */
- status = box_set_hw_flow_ctrl(port->serial, index, 1);
-
- if (status < 0) {
- dev_dbg(&port->dev, "box_set_hw_flow_ctrl failed\n");
- return;
- }
- } else {
- /* Disable RTS/CTS flow control */
- dev_dbg(&port->dev,
- "%s - disabling HW flow control\n", __func__);
-
- status = box_set_hw_flow_ctrl(port->serial, index, 0);
- if (status < 0) {
- dev_dbg(&port->dev, "box_set_hw_flow_ctrl 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 = box_set_sw_flow_ctrl(port->serial, index, stop_char,
- start_char);
- if (status < 0)
- dev_dbg(&port->dev,
- "box_set_sw_flow_ctrl (enabled) failed\n");
-
- } else {
- /* disable SW flow control */
- status = box_disable_sw_flow_ctrl(port->serial, index);
- if (status < 0)
- dev_dbg(&port->dev,
- "box_set_sw_flow_ctrl (diabling) failed\n");
-
- }
- termios->c_cflag &= ~CMSPAR;
- /* FIXME:
- Error cases should be returning the actual bits changed only
- */
-}
-
-static void qt_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__);
- struct quatech_port *qt_port;
- u16 index, onoff;
- unsigned int result;
-
- index = port->port_number;
-
- qt_port = qt_get_port_private(port);
-
- if (break_state == -1)
- onoff = 1;
- else
- onoff = 0;
-
- mutex_lock(&qt_port->lock);
-
- result =
- usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- QT_BREAK_CONTROL, 0x40, onoff, index, NULL, 0, 300);
-
- mutex_unlock(&qt_port->lock);
-}
-
-static inline int qt_real_tiocmget(struct tty_struct *tty,
- struct usb_serial_port *port,
- struct usb_serial *serial)
-{
-
- u8 mcr;
- u8 msr;
- unsigned int result = 0;
- int status;
- unsigned int index;
-
- index = port->port_number;
- status =
- box_get_register(port->serial, index, MODEM_CONTROL_REGISTER, &mcr);
- if (status >= 0) {
- status =
- box_get_register(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 inline int qt_real_tiocmset(struct tty_struct *tty,
- struct usb_serial_port *port,
- struct usb_serial *serial,
- unsigned int value)
-{
-
- u8 mcr;
- int status;
- unsigned int index;
-
- index = port->port_number;
- status =
- box_get_register(port->serial, index, MODEM_CONTROL_REGISTER, &mcr);
- if (status < 0)
- return -ESPIPE;
-
- /*
- * Turn off the RTS and DTR and loopback 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 =
- box_set_register(port->serial, index, MODEM_CONTROL_REGISTER, mcr);
- if (status < 0)
- return -ESPIPE;
-
- return 0;
-}
-
-static int qt_tiocmget(struct tty_struct *tty)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct usb_serial *serial = get_usb_serial(port, __func__);
- struct quatech_port *qt_port = qt_get_port_private(port);
- int retval;
-
- if (!serial)
- return -ENODEV;
-
- mutex_lock(&qt_port->lock);
- retval = qt_real_tiocmget(tty, port, serial);
- mutex_unlock(&qt_port->lock);
- return retval;
-}
-
-static int qt_tiocmset(struct tty_struct *tty,
- unsigned int set, unsigned int clear)
-{
-
- struct usb_serial_port *port = tty->driver_data;
- struct usb_serial *serial = get_usb_serial(port, __func__);
- struct quatech_port *qt_port = qt_get_port_private(port);
- int retval;
-
- if (!serial)
- return -ENODEV;
-
- mutex_lock(&qt_port->lock);
- retval = qt_real_tiocmset(tty, port, serial, set);
- mutex_unlock(&qt_port->lock);
- return retval;
-}
-
-static void qt_throttle(struct tty_struct *tty)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct usb_serial *serial = get_usb_serial(port, __func__);
- struct quatech_port *qt_port;
-
- if (!serial)
- return;
-
- qt_port = qt_get_port_private(port);
-
- mutex_lock(&qt_port->lock);
-
- /* pass on to the driver specific version of this function */
- qt_port->rx_holding = 1;
-
- mutex_unlock(&qt_port->lock);
-}
-
-static void qt_submit_urb_from_unthrottle(struct usb_serial_port *port,
- struct usb_serial *serial)
-{
- int result;
-
- /* 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)
- dev_err(&port->dev,
- "%s - failed restarting read urb, error %d\n",
- __func__, result);
-}
-
-static void qt_unthrottle(struct tty_struct *tty)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct usb_serial *serial = get_usb_serial(port, __func__);
- struct quatech_port *qt_port;
-
- if (!serial)
- return;
-
- qt_port = qt_get_port_private(port);
-
- mutex_lock(&qt_port->lock);
-
- if (qt_port->rx_holding == 1) {
- dev_dbg(&port->dev, "%s -qt_port->rx_holding == 1\n", __func__);
-
- qt_port->rx_holding = 0;
- dev_dbg(&port->dev, "%s - qt_port->rx_holding = 0\n", __func__);
-
- /* if we have a bulk endpoint, start it up */
- if ((serial->num_bulk_in) && (qt_port->read_bulk_stopped == 1))
- qt_submit_urb_from_unthrottle(port, serial);
- }
- mutex_unlock(&qt_port->lock);
-}
-
-static int qt_calc_num_ports(struct usb_serial *serial)
-{
- int num_ports;
-
- num_ports =
- (serial->interface->cur_altsetting->desc.bNumEndpoints - 1) / 2;
-
- return num_ports;
-}
-
-static struct usb_serial_driver quatech_device = {
- .driver = {
- .owner = THIS_MODULE,
- .name = "serqt",
- },
- .description = DRIVER_DESC,
- .id_table = id_table,
- .num_ports = 8,
- .open = qt_open,
- .close = qt_close,
- .write = qt_write,
- .write_room = qt_write_room,
- .chars_in_buffer = qt_chars_in_buffer,
- .throttle = qt_throttle,
- .unthrottle = qt_unthrottle,
- .calc_num_ports = qt_calc_num_ports,
- .ioctl = qt_ioctl,
- .set_termios = qt_set_termios,
- .break_ctl = qt_break,
- .tiocmget = qt_tiocmget,
- .tiocmset = qt_tiocmset,
- .attach = qt_startup,
- .release = qt_release,
-};
-
-static struct usb_serial_driver * const serial_drivers[] = {
- &quatech_device, NULL
-};
-
-module_usb_serial_driver(serial_drivers, id_table);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
projects / karo-tx-linux.git / commitdiff