mirror of https://gitee.com/openkylin/linux.git
679 lines
18 KiB
C
679 lines
18 KiB
C
/*
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USB Driver for Sierra Wireless
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Copyright (C) 2006 Kevin Lloyd <linux@sierrawireless.com>
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IMPORTANT DISCLAIMER: This driver is not commercially supported by
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Sierra Wireless. Use at your own risk.
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This driver is free software; you can redistribute it and/or modify
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it under the terms of Version 2 of the GNU General Public License as
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published by the Free Software Foundation.
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Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
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Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
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*/
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#define DRIVER_VERSION "v.1.0.6"
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#define DRIVER_AUTHOR "Kevin Lloyd <linux@sierrawireless.com>"
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#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
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#include <linux/kernel.h>
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#include <linux/jiffies.h>
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#include <linux/errno.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <linux/usb/serial.h>
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static struct usb_device_id id_table [] = {
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{ USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
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{ USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
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{ USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
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{ USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
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{ USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
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{ USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless AirCard 595U */
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{ USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
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{ USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
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{ USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
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{ USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
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{ USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 */
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{ USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
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{ USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
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{ USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
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{ }
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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static struct usb_device_id id_table_1port [] = {
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{ USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
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{ USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
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{ }
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};
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static struct usb_device_id id_table_3port [] = {
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{ USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
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{ USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
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{ USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
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{ USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
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{ USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
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{ USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless AirCard 595U */
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{ USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
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{ USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
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{ USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
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{ USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
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{ USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 */
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{ USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
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{ }
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};
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static struct usb_driver sierra_driver = {
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.name = "sierra",
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.probe = usb_serial_probe,
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.disconnect = usb_serial_disconnect,
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.id_table = id_table,
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.no_dynamic_id = 1,
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};
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static int debug;
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/* per port private data */
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#define N_IN_URB 4
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#define N_OUT_URB 4
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#define IN_BUFLEN 4096
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struct sierra_port_private {
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spinlock_t lock; /* lock the structure */
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int outstanding_urbs; /* number of out urbs in flight */
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/* Input endpoints and buffer for this port */
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struct urb *in_urbs[N_IN_URB];
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char in_buffer[N_IN_URB][IN_BUFLEN];
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/* Settings for the port */
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int rts_state; /* Handshaking pins (outputs) */
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int dtr_state;
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int cts_state; /* Handshaking pins (inputs) */
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int dsr_state;
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int dcd_state;
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int ri_state;
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};
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static int sierra_send_setup(struct usb_serial_port *port)
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{
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struct usb_serial *serial = port->serial;
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struct sierra_port_private *portdata;
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dbg("%s", __FUNCTION__);
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portdata = usb_get_serial_port_data(port);
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if (port->tty) {
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int val = 0;
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if (portdata->dtr_state)
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val |= 0x01;
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if (portdata->rts_state)
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val |= 0x02;
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return usb_control_msg(serial->dev,
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usb_rcvctrlpipe(serial->dev, 0),
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0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
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}
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return 0;
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}
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static void sierra_rx_throttle(struct usb_serial_port *port)
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{
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dbg("%s", __FUNCTION__);
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}
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static void sierra_rx_unthrottle(struct usb_serial_port *port)
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{
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dbg("%s", __FUNCTION__);
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}
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static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
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{
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/* Unfortunately, I don't know how to send a break */
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dbg("%s", __FUNCTION__);
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}
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static void sierra_set_termios(struct usb_serial_port *port,
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struct ktermios *old_termios)
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{
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dbg("%s", __FUNCTION__);
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sierra_send_setup(port);
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}
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static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
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{
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unsigned int value;
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struct sierra_port_private *portdata;
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portdata = usb_get_serial_port_data(port);
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value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
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((portdata->dtr_state) ? TIOCM_DTR : 0) |
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((portdata->cts_state) ? TIOCM_CTS : 0) |
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((portdata->dsr_state) ? TIOCM_DSR : 0) |
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((portdata->dcd_state) ? TIOCM_CAR : 0) |
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((portdata->ri_state) ? TIOCM_RNG : 0);
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return value;
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}
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static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
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unsigned int set, unsigned int clear)
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{
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struct sierra_port_private *portdata;
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portdata = usb_get_serial_port_data(port);
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if (set & TIOCM_RTS)
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portdata->rts_state = 1;
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if (set & TIOCM_DTR)
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portdata->dtr_state = 1;
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if (clear & TIOCM_RTS)
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portdata->rts_state = 0;
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if (clear & TIOCM_DTR)
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portdata->dtr_state = 0;
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return sierra_send_setup(port);
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}
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static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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return -ENOIOCTLCMD;
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}
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static void sierra_outdat_callback(struct urb *urb)
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{
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struct usb_serial_port *port = urb->context;
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struct sierra_port_private *portdata = usb_get_serial_port_data(port);
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int status = urb->status;
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unsigned long flags;
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dbg("%s - port %d", __FUNCTION__, port->number);
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/* free up the transfer buffer, as usb_free_urb() does not do this */
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kfree(urb->transfer_buffer);
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if (status)
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dbg("%s - nonzero write bulk status received: %d",
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__FUNCTION__, status);
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spin_lock_irqsave(&portdata->lock, flags);
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--portdata->outstanding_urbs;
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spin_unlock_irqrestore(&portdata->lock, flags);
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usb_serial_port_softint(port);
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}
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/* Write */
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static int sierra_write(struct usb_serial_port *port,
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const unsigned char *buf, int count)
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{
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struct sierra_port_private *portdata = usb_get_serial_port_data(port);
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struct usb_serial *serial = port->serial;
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unsigned long flags;
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unsigned char *buffer;
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struct urb *urb;
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int status;
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portdata = usb_get_serial_port_data(port);
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dbg("%s: write (%d chars)", __FUNCTION__, count);
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spin_lock_irqsave(&portdata->lock, flags);
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if (portdata->outstanding_urbs > N_OUT_URB) {
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spin_unlock_irqrestore(&portdata->lock, flags);
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dbg("%s - write limit hit\n", __FUNCTION__);
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return 0;
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}
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portdata->outstanding_urbs++;
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spin_unlock_irqrestore(&portdata->lock, flags);
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buffer = kmalloc(count, GFP_ATOMIC);
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if (!buffer) {
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dev_err(&port->dev, "out of memory\n");
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count = -ENOMEM;
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goto error_no_buffer;
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}
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urb = usb_alloc_urb(0, GFP_ATOMIC);
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if (!urb) {
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dev_err(&port->dev, "no more free urbs\n");
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count = -ENOMEM;
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goto error_no_urb;
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}
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memcpy(buffer, buf, count);
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usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
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usb_fill_bulk_urb(urb, serial->dev,
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usb_sndbulkpipe(serial->dev,
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port->bulk_out_endpointAddress),
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buffer, count, sierra_outdat_callback, port);
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/* send it down the pipe */
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status = usb_submit_urb(urb, GFP_ATOMIC);
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if (status) {
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dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
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"with status = %d\n", __FUNCTION__, status);
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count = status;
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goto error;
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}
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/* we are done with this urb, so let the host driver
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* really free it when it is finished with it */
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usb_free_urb(urb);
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return count;
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error:
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usb_free_urb(urb);
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error_no_urb:
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kfree(buffer);
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error_no_buffer:
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spin_lock_irqsave(&portdata->lock, flags);
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--portdata->outstanding_urbs;
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spin_unlock_irqrestore(&portdata->lock, flags);
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return count;
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}
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static void sierra_indat_callback(struct urb *urb)
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{
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int err;
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int endpoint;
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struct usb_serial_port *port;
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struct tty_struct *tty;
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unsigned char *data = urb->transfer_buffer;
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int status = urb->status;
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dbg("%s: %p", __FUNCTION__, urb);
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endpoint = usb_pipeendpoint(urb->pipe);
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port = (struct usb_serial_port *) urb->context;
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if (status) {
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dbg("%s: nonzero status: %d on endpoint %02x.",
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__FUNCTION__, status, endpoint);
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} else {
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tty = port->tty;
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if (urb->actual_length) {
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tty_buffer_request_room(tty, urb->actual_length);
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tty_insert_flip_string(tty, data, urb->actual_length);
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tty_flip_buffer_push(tty);
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} else {
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dbg("%s: empty read urb received", __FUNCTION__);
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}
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/* Resubmit urb so we continue receiving */
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if (port->open_count && status != -ESHUTDOWN) {
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err = usb_submit_urb(urb, GFP_ATOMIC);
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if (err)
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dev_err(&port->dev, "resubmit read urb failed."
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"(%d)", err);
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}
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}
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return;
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}
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static void sierra_instat_callback(struct urb *urb)
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{
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int err;
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int status = urb->status;
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struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
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struct sierra_port_private *portdata = usb_get_serial_port_data(port);
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struct usb_serial *serial = port->serial;
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dbg("%s", __FUNCTION__);
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dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
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if (status == 0) {
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struct usb_ctrlrequest *req_pkt =
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(struct usb_ctrlrequest *)urb->transfer_buffer;
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if (!req_pkt) {
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dbg("%s: NULL req_pkt\n", __FUNCTION__);
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return;
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}
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if ((req_pkt->bRequestType == 0xA1) &&
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(req_pkt->bRequest == 0x20)) {
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int old_dcd_state;
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unsigned char signals = *((unsigned char *)
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urb->transfer_buffer +
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sizeof(struct usb_ctrlrequest));
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dbg("%s: signal x%x", __FUNCTION__, signals);
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old_dcd_state = portdata->dcd_state;
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portdata->cts_state = 1;
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portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
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portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
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portdata->ri_state = ((signals & 0x08) ? 1 : 0);
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if (port->tty && !C_CLOCAL(port->tty) &&
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old_dcd_state && !portdata->dcd_state)
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tty_hangup(port->tty);
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} else {
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dbg("%s: type %x req %x", __FUNCTION__,
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req_pkt->bRequestType,req_pkt->bRequest);
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}
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} else
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dbg("%s: error %d", __FUNCTION__, status);
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/* Resubmit urb so we continue receiving IRQ data */
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if (status != -ESHUTDOWN) {
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urb->dev = serial->dev;
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err = usb_submit_urb(urb, GFP_ATOMIC);
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if (err)
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dbg("%s: resubmit intr urb failed. (%d)",
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__FUNCTION__, err);
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}
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}
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static int sierra_write_room(struct usb_serial_port *port)
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{
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struct sierra_port_private *portdata = usb_get_serial_port_data(port);
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unsigned long flags;
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dbg("%s - port %d", __FUNCTION__, port->number);
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/* try to give a good number back based on if we have any free urbs at
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* this point in time */
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spin_lock_irqsave(&portdata->lock, flags);
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if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
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spin_unlock_irqrestore(&portdata->lock, flags);
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dbg("%s - write limit hit\n", __FUNCTION__);
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return 0;
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}
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spin_unlock_irqrestore(&portdata->lock, flags);
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return 2048;
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}
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static int sierra_chars_in_buffer(struct usb_serial_port *port)
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{
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dbg("%s - port %d", __FUNCTION__, port->number);
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/*
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* We can't really account for how much data we
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* have sent out, but hasn't made it through to the
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* device as we can't see the backend here, so just
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* tell the tty layer that everything is flushed.
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*/
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return 0;
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}
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static int sierra_open(struct usb_serial_port *port, struct file *filp)
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{
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struct sierra_port_private *portdata;
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struct usb_serial *serial = port->serial;
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int i;
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struct urb *urb;
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int result;
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__u16 set_mode_dzero = 0x0000;
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portdata = usb_get_serial_port_data(port);
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dbg("%s", __FUNCTION__);
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/* Set some sane defaults */
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portdata->rts_state = 1;
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portdata->dtr_state = 1;
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/* Reset low level data toggle and start reading from endpoints */
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for (i = 0; i < N_IN_URB; i++) {
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urb = portdata->in_urbs[i];
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if (!urb)
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continue;
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if (urb->dev != serial->dev) {
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dbg("%s: dev %p != %p", __FUNCTION__,
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urb->dev, serial->dev);
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continue;
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}
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/*
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* make sure endpoint data toggle is synchronized with the
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* device
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*/
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usb_clear_halt(urb->dev, urb->pipe);
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result = usb_submit_urb(urb, GFP_KERNEL);
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if (result) {
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dev_err(&port->dev, "submit urb %d failed (%d) %d",
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i, result, urb->transfer_buffer_length);
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}
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}
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port->tty->low_latency = 1;
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/* set mode to D0 */
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result = usb_control_msg(serial->dev,
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usb_rcvctrlpipe(serial->dev, 0),
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0x00, 0x40, set_mode_dzero, 0, NULL,
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0, USB_CTRL_SET_TIMEOUT);
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sierra_send_setup(port);
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/* start up the interrupt endpoint if we have one */
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if (port->interrupt_in_urb) {
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result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
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if (result)
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dev_err(&port->dev, "submit irq_in urb failed %d",
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result);
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}
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return 0;
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}
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static void sierra_close(struct usb_serial_port *port, struct file *filp)
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{
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int i;
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struct usb_serial *serial = port->serial;
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struct sierra_port_private *portdata;
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dbg("%s", __FUNCTION__);
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portdata = usb_get_serial_port_data(port);
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portdata->rts_state = 0;
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portdata->dtr_state = 0;
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if (serial->dev) {
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sierra_send_setup(port);
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/* Stop reading/writing urbs */
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for (i = 0; i < N_IN_URB; i++)
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usb_kill_urb(portdata->in_urbs[i]);
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}
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usb_kill_urb(port->interrupt_in_urb);
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port->tty = NULL;
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}
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static int sierra_startup(struct usb_serial *serial)
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|
{
|
|
struct usb_serial_port *port;
|
|
struct sierra_port_private *portdata;
|
|
struct urb *urb;
|
|
int i;
|
|
int j;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
/* Now setup per port private data */
|
|
for (i = 0; i < serial->num_ports; i++) {
|
|
port = serial->port[i];
|
|
portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
|
|
if (!portdata) {
|
|
dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
|
|
__FUNCTION__, i);
|
|
return -ENOMEM;
|
|
}
|
|
spin_lock_init(&portdata->lock);
|
|
|
|
usb_set_serial_port_data(port, portdata);
|
|
|
|
/* initialize the in urbs */
|
|
for (j = 0; j < N_IN_URB; ++j) {
|
|
urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (urb == NULL) {
|
|
dbg("%s: alloc for in port failed.",
|
|
__FUNCTION__);
|
|
continue;
|
|
}
|
|
/* Fill URB using supplied data. */
|
|
usb_fill_bulk_urb(urb, serial->dev,
|
|
usb_rcvbulkpipe(serial->dev,
|
|
port->bulk_in_endpointAddress),
|
|
portdata->in_buffer[j], IN_BUFLEN,
|
|
sierra_indat_callback, port);
|
|
portdata->in_urbs[j] = urb;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void sierra_shutdown(struct usb_serial *serial)
|
|
{
|
|
int i, j;
|
|
struct usb_serial_port *port;
|
|
struct sierra_port_private *portdata;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
for (i = 0; i < serial->num_ports; ++i) {
|
|
port = serial->port[i];
|
|
if (!port)
|
|
continue;
|
|
portdata = usb_get_serial_port_data(port);
|
|
if (!portdata)
|
|
continue;
|
|
|
|
for (j = 0; j < N_IN_URB; j++) {
|
|
usb_kill_urb(portdata->in_urbs[j]);
|
|
usb_free_urb(portdata->in_urbs[j]);
|
|
portdata->in_urbs[j] = NULL;
|
|
}
|
|
kfree(portdata);
|
|
usb_set_serial_port_data(port, NULL);
|
|
}
|
|
}
|
|
|
|
static struct usb_serial_driver sierra_1port_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "sierra1",
|
|
},
|
|
.description = "Sierra USB modem (1 port)",
|
|
.id_table = id_table_1port,
|
|
.usb_driver = &sierra_driver,
|
|
.num_interrupt_in = NUM_DONT_CARE,
|
|
.num_bulk_in = 1,
|
|
.num_bulk_out = 1,
|
|
.num_ports = 1,
|
|
.open = sierra_open,
|
|
.close = sierra_close,
|
|
.write = sierra_write,
|
|
.write_room = sierra_write_room,
|
|
.chars_in_buffer = sierra_chars_in_buffer,
|
|
.throttle = sierra_rx_throttle,
|
|
.unthrottle = sierra_rx_unthrottle,
|
|
.ioctl = sierra_ioctl,
|
|
.set_termios = sierra_set_termios,
|
|
.break_ctl = sierra_break_ctl,
|
|
.tiocmget = sierra_tiocmget,
|
|
.tiocmset = sierra_tiocmset,
|
|
.attach = sierra_startup,
|
|
.shutdown = sierra_shutdown,
|
|
.read_int_callback = sierra_instat_callback,
|
|
};
|
|
|
|
static struct usb_serial_driver sierra_3port_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "sierra3",
|
|
},
|
|
.description = "Sierra USB modem (3 port)",
|
|
.id_table = id_table_3port,
|
|
.usb_driver = &sierra_driver,
|
|
.num_interrupt_in = NUM_DONT_CARE,
|
|
.num_bulk_in = 3,
|
|
.num_bulk_out = 3,
|
|
.num_ports = 3,
|
|
.open = sierra_open,
|
|
.close = sierra_close,
|
|
.write = sierra_write,
|
|
.write_room = sierra_write_room,
|
|
.chars_in_buffer = sierra_chars_in_buffer,
|
|
.throttle = sierra_rx_throttle,
|
|
.unthrottle = sierra_rx_unthrottle,
|
|
.ioctl = sierra_ioctl,
|
|
.set_termios = sierra_set_termios,
|
|
.break_ctl = sierra_break_ctl,
|
|
.tiocmget = sierra_tiocmget,
|
|
.tiocmset = sierra_tiocmset,
|
|
.attach = sierra_startup,
|
|
.shutdown = sierra_shutdown,
|
|
.read_int_callback = sierra_instat_callback,
|
|
};
|
|
|
|
/* Functions used by new usb-serial code. */
|
|
static int __init sierra_init(void)
|
|
{
|
|
int retval;
|
|
retval = usb_serial_register(&sierra_1port_device);
|
|
if (retval)
|
|
goto failed_1port_device_register;
|
|
retval = usb_serial_register(&sierra_3port_device);
|
|
if (retval)
|
|
goto failed_3port_device_register;
|
|
|
|
|
|
retval = usb_register(&sierra_driver);
|
|
if (retval)
|
|
goto failed_driver_register;
|
|
|
|
info(DRIVER_DESC ": " DRIVER_VERSION);
|
|
|
|
return 0;
|
|
|
|
failed_driver_register:
|
|
usb_serial_deregister(&sierra_3port_device);
|
|
failed_3port_device_register:
|
|
usb_serial_deregister(&sierra_1port_device);
|
|
failed_1port_device_register:
|
|
return retval;
|
|
}
|
|
|
|
static void __exit sierra_exit(void)
|
|
{
|
|
usb_deregister (&sierra_driver);
|
|
usb_serial_deregister(&sierra_1port_device);
|
|
usb_serial_deregister(&sierra_3port_device);
|
|
}
|
|
|
|
module_init(sierra_init);
|
|
module_exit(sierra_exit);
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_VERSION(DRIVER_VERSION);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#ifdef CONFIG_USB_DEBUG
|
|
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(debug, "Debug messages");
|
|
#endif
|
|
|