keyspan.c
上传用户:lgb322
上传日期:2013-02-24
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文件大小:47k
- /*
- Keyspan USB to Serial Converter driver
-
- (C) Copyright (C) 2000-2001
- Hugh Blemings <hugh@misc.nu>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- See http://misc.nu/hugh/keyspan.html for more information.
-
- Code in this driver inspired by and in a number of places taken
- from Brian Warner's original Keyspan-PDA driver.
- This driver has been put together with the support of Innosys, Inc.
- and Keyspan, Inc the manufacturers of the Keyspan USB-serial products.
- Thanks Guys :)
-
- Thanks to Paulus for miscellaneous tidy ups, some largish chunks
- of much nicer and/or completely new code and (perhaps most uniquely)
- having the patience to sit down and explain why and where he'd changed
- stuff.
-
- Tip 'o the hat to IBM (and previously Linuxcare :) for supporting
- staff in their work on open source projects.
- Change History
- Mon Oct 8 14:29:00 EST 2001 hugh
- Fixed bug that prevented mulitport devices operating correctly
- if they weren't the first unit attached.
- Sat Oct 6 12:31:21 EST 2001 hugh
- Added support for USA-28XA and -28XB, misc cleanups, break support
- for usa26 based models thanks to David Gibson.
- Thu May 31 11:56:42 PDT 2001 gkh
- switched from using spinlock to a semaphore
-
- (04/08/2001) gb
- Identify version on module load.
-
- (11/01/2000) Adam J. Richter
- usb_device_id table support.
-
- Tue Oct 10 23:15:33 EST 2000 Hugh
- Merged Paul's changes with my USA-49W mods. Work in progress
- still...
-
- Wed Jul 19 14:00:42 EST 2000 gkh
- Added module_init and module_exit functions to handle the fact that
- this driver is a loadable module now.
-
- Tue Jul 18 16:14:52 EST 2000 Hugh
- Basic character input/output for USA-19 now mostly works,
- fixed at 9600 baud for the moment.
- Sat Jul 8 11:11:48 EST 2000 Hugh
- First public release - nothing works except the firmware upload.
- Tested on PPC and x86 architectures, seems to behave...
- */
- #include <linux/config.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/signal.h>
- #include <linux/errno.h>
- #include <linux/poll.h>
- #include <linux/init.h>
- #include <linux/slab.h>
- #include <linux/fcntl.h>
- #include <linux/tty.h>
- #include <linux/tty_driver.h>
- #include <linux/tty_flip.h>
- #include <linux/module.h>
- #include <linux/spinlock.h>
- #include <linux/usb.h>
- #ifdef CONFIG_USB_SERIAL_DEBUG
- static int debug = 1;
- #define DEBUG
- #else
- static int debug;
- #undef DEBUG
- #endif
- #include <linux/usb.h>
- #include "usb-serial.h"
- #include "keyspan.h"
- /*
- * Version Information
- */
- #define DRIVER_VERSION "v1.1.1"
- #define DRIVER_AUTHOR "Hugh Blemings <hugh@misc.nu"
- #define DRIVER_DESC "Keyspan USB to Serial Converter Driver"
- #define INSTAT_BUFLEN 32
- #define GLOCONT_BUFLEN 64
- /* Per device and per port private data */
- struct keyspan_serial_private {
- /* number of active ports */
- atomic_t active_count;
- const keyspan_device_details *device_details;
- urb_t *instat_urb;
- char instat_buf[INSTAT_BUFLEN];
- /* XXX this one probably will need a lock */
- urb_t *glocont_urb;
- char glocont_buf[GLOCONT_BUFLEN];
- };
- struct keyspan_port_private {
- /* Keep track of which input & output endpoints to use */
- int in_flip;
- int out_flip;
- /* Keep duplicate of device details in each port
- structure as well - simplifies some of the
- callback functions etc. */
- const keyspan_device_details *device_details;
- /* Input endpoints and buffer for this port */
- urb_t *in_urbs[2];
- char in_buffer[2][64];
- /* Output endpoints and buffer for this port */
- urb_t *out_urbs[2];
- char out_buffer[2][64];
- /* Input ack endpoint */
- urb_t *inack_urb;
- char inack_buffer[1];
- /* Output control endpoint */
- urb_t *outcont_urb;
- char outcont_buffer[64];
- /* Settings for the port */
- int baud;
- int old_baud;
- unsigned int cflag;
- enum {flow_none, flow_cts, flow_xon} flow_control;
- int rts_state; /* Handshaking pins (outputs) */
- int dtr_state;
- int cts_state; /* Handshaking pins (inputs) */
- int dsr_state;
- int dcd_state;
- int ri_state;
- int break_on;
- unsigned long tx_start_time[2];
- int resend_cont; /* need to resend control packet */
- };
-
- /* Include Keyspan message headers. All current Keyspan Adapters
- make use of one of three message formats which are referred
- to as USA-26, USA-28 and USA-49 by Keyspan and within this driver. */
- #include "keyspan_usa26msg.h"
- #include "keyspan_usa28msg.h"
- #include "keyspan_usa49msg.h"
-
- /* If you don't get debugging output, uncomment the following
- two lines to enable cheat. */
- #if 0
- #undef dbg
- #define dbg printk
- #endif
- /* Functions used by new usb-serial code. */
- static int __init keyspan_init (void)
- {
- usb_serial_register (&keyspan_usa18x_pre_device);
- usb_serial_register (&keyspan_usa19_pre_device);
- usb_serial_register (&keyspan_usa19w_pre_device);
- usb_serial_register (&keyspan_usa28_pre_device);
- usb_serial_register (&keyspan_usa28x_pre_device);
- usb_serial_register (&keyspan_usa28xa_pre_device);
- usb_serial_register (&keyspan_usa28xb_pre_device);
- usb_serial_register (&keyspan_usa49w_pre_device);
- usb_serial_register (&keyspan_usa18x_device);
- usb_serial_register (&keyspan_usa19_device);
- usb_serial_register (&keyspan_usa19w_device);
- usb_serial_register (&keyspan_usa28_device);
- usb_serial_register (&keyspan_usa28x_device);
- usb_serial_register (&keyspan_usa28xa_device);
- /* We don't need a separate entry for the usa28xb as it appears as a 28x anyway */
- usb_serial_register (&keyspan_usa49w_device);
- info(DRIVER_VERSION ":" DRIVER_DESC);
- return 0;
- }
- static void __exit keyspan_exit (void)
- {
- usb_serial_deregister (&keyspan_usa18x_pre_device);
- usb_serial_deregister (&keyspan_usa19_pre_device);
- usb_serial_deregister (&keyspan_usa19w_pre_device);
- usb_serial_deregister (&keyspan_usa28_pre_device);
- usb_serial_deregister (&keyspan_usa28x_pre_device);
- usb_serial_deregister (&keyspan_usa28xa_pre_device);
- usb_serial_deregister (&keyspan_usa28xb_pre_device);
- usb_serial_deregister (&keyspan_usa49w_pre_device);
- usb_serial_deregister (&keyspan_usa18x_device);
- usb_serial_deregister (&keyspan_usa19_device);
- usb_serial_deregister (&keyspan_usa19w_device);
- usb_serial_deregister (&keyspan_usa28_device);
- usb_serial_deregister (&keyspan_usa28x_device);
- usb_serial_deregister (&keyspan_usa28xa_device);
- /* We don't need a separate entry for the usa28xb as it appears as a 28x anyway */
- usb_serial_deregister (&keyspan_usa49w_device);
- }
- module_init(keyspan_init);
- module_exit(keyspan_exit);
- static void keyspan_rx_throttle (struct usb_serial_port *port)
- {
- dbg("keyspan_rx_throttle port %dn", port->number);
- }
- static void keyspan_rx_unthrottle (struct usb_serial_port *port)
- {
- dbg("keyspan_rx_unthrottle port %dn", port->number);
- }
- static void keyspan_break_ctl (struct usb_serial_port *port, int break_state)
- {
- struct keyspan_port_private *p_priv;
- dbg("keyspan_break_ctln");
- p_priv = (struct keyspan_port_private *)port->private;
- if (break_state == -1)
- p_priv->break_on = 1;
- else
- p_priv->break_on = 0;
- keyspan_send_setup(port, 0);
- }
- static void keyspan_set_termios (struct usb_serial_port *port,
- struct termios *old_termios)
- {
- int baud_rate;
- struct keyspan_port_private *p_priv;
- const keyspan_device_details *d_details;
- unsigned int cflag;
- dbg(__FUNCTION__ ".n");
- p_priv = (struct keyspan_port_private *)(port->private);
- d_details = p_priv->device_details;
- cflag = port->tty->termios->c_cflag;
- /* Baud rate calculation takes baud rate as an integer
- so other rates can be generated if desired. */
- baud_rate = tty_get_baud_rate(port->tty);
- /* If no match or invalid, don't change */
- if (baud_rate >= 0
- && d_details->calculate_baud_rate(baud_rate, d_details->baudclk,
- NULL, NULL, NULL) == KEYSPAN_BAUD_RATE_OK) {
- /* FIXME - more to do here to ensure rate changes cleanly */
- p_priv->baud = baud_rate;
- }
- /* set CTS/RTS handshake etc. */
- p_priv->cflag = cflag;
- p_priv->flow_control = (cflag & CRTSCTS)? flow_cts: flow_none;
- keyspan_send_setup(port, 0);
- }
- static int keyspan_ioctl(struct usb_serial_port *port, struct file *file,
- unsigned int cmd, unsigned long arg)
- {
- unsigned int value, set;
- struct keyspan_port_private *p_priv;
- p_priv = (struct keyspan_port_private *)(port->private);
-
- switch (cmd) {
- case TIOCMGET:
- value = ((p_priv->rts_state) ? TIOCM_RTS : 0) |
- ((p_priv->dtr_state) ? TIOCM_DTR : 0) |
- ((p_priv->cts_state) ? TIOCM_CTS : 0) |
- ((p_priv->dsr_state) ? TIOCM_DSR : 0) |
- ((p_priv->dcd_state) ? TIOCM_CAR : 0) |
- ((p_priv->ri_state) ? TIOCM_RNG : 0);
- if (put_user(value, (unsigned int *) arg))
- return -EFAULT;
- return 0;
-
- case TIOCMSET:
- if (get_user(value, (unsigned int *) arg))
- return -EFAULT;
- p_priv->rts_state = ((value & TIOCM_RTS) ? 1 : 0);
- p_priv->dtr_state = ((value & TIOCM_DTR) ? 1 : 0);
- keyspan_send_setup(port, 0);
- return 0;
- case TIOCMBIS:
- case TIOCMBIC:
- if (get_user(value, (unsigned int *) arg))
- return -EFAULT;
- set = (cmd == TIOCMBIS);
- if (value & TIOCM_RTS)
- p_priv->rts_state = set;
- if (value & TIOCM_DTR)
- p_priv->dtr_state = set;
- keyspan_send_setup(port, 0);
- return 0;
- }
- return -ENOIOCTLCMD;
- }
- /* Write function is generic for the three protocols used
- with only a minor change for usa49 required */
- static int keyspan_write(struct usb_serial_port *port, int from_user,
- const unsigned char *buf, int count)
- {
- struct keyspan_port_private *p_priv;
- const keyspan_device_details *d_details;
- int flip;
- int left, todo;
- urb_t *this_urb;
- int err;
- p_priv = (struct keyspan_port_private *)(port->private);
- d_details = p_priv->device_details;
- #if 0
- dbg(__FUNCTION__ " for port %d (%d chars [%x]), flip=%dn",
- port->number, count, buf[0], p_priv->out_flip);
- #endif
- for (left = count; left > 0; left -= todo) {
- todo = left;
- if (todo > 63)
- todo = 63;
- flip = p_priv->out_flip;
-
- /* Check we have a valid urb/endpoint before we use it... */
- if ((this_urb = p_priv->out_urbs[flip]) == 0) {
- /* no bulk out, so return 0 bytes written */
- dbg(__FUNCTION__ " no output urb :(n");
- return count;
- }
- dbg(__FUNCTION__ " endpoint %dn", usb_pipeendpoint(this_urb->pipe));
- if (this_urb->status == -EINPROGRESS) {
- if (this_urb->transfer_flags & USB_ASYNC_UNLINK)
- break;
- if (jiffies - p_priv->tx_start_time[flip] < 10 * HZ)
- break;
- this_urb->transfer_flags |= USB_ASYNC_UNLINK;
- usb_unlink_urb(this_urb);
- break;
- }
- /* First byte in buffer is "last flag" - unused so
- for now so set to zero */
- ((char *)this_urb->transfer_buffer)[0] = 0;
- if (from_user) {
- if (copy_from_user(this_urb->transfer_buffer + 1, buf, todo))
- return -EFAULT;
- } else {
- memcpy (this_urb->transfer_buffer + 1, buf, todo);
- }
- buf += todo;
- /* send the data out the bulk port */
- this_urb->transfer_buffer_length = todo + 1;
- this_urb->transfer_flags &= ~USB_ASYNC_UNLINK;
- this_urb->dev = port->serial->dev;
- if ((err = usb_submit_urb(this_urb)) != 0) {
- dbg("usb_submit_urb(write bulk) failed (%d)n", err);
- }
- p_priv->tx_start_time[flip] = jiffies;
- /* Flip for next time if usa26 or usa28 interface
- (not used on usa49) */
- p_priv->out_flip = (flip + 1) & d_details->outdat_endp_flip;
- }
- return count - left;
- }
- static void usa26_indat_callback(struct urb *urb)
- {
- int i, err;
- int endpoint;
- struct usb_serial_port *port;
- struct tty_struct *tty;
- unsigned char *data = urb->transfer_buffer;
- dbg ("%sn", __FUNCTION__);
- endpoint = usb_pipeendpoint(urb->pipe);
- if (urb->status) {
- dbg(__FUNCTION__ "nonzero status: %x on endpoint %d.n",
- urb->status, endpoint);
- return;
- }
- port = (struct usb_serial_port *) urb->context;
- tty = port->tty;
- if (urb->actual_length) {
- if (data[0] == 0) {
- /* no error on any byte */
- for (i = 1; i < urb->actual_length ; ++i) {
- tty_insert_flip_char(tty, data[i], 0);
- }
- } else {
- /* some bytes had errors, every byte has status */
- for (i = 0; i + 1 < urb->actual_length; i += 2) {
- int stat = data[i], flag = 0;
- if (stat & RXERROR_OVERRUN)
- flag |= TTY_OVERRUN;
- if (stat & RXERROR_FRAMING)
- flag |= TTY_FRAME;
- if (stat & RXERROR_PARITY)
- flag |= TTY_PARITY;
- /* XXX should handle break (0x10) */
- tty_insert_flip_char(tty, data[i+1], flag);
- }
- }
- tty_flip_buffer_push(tty);
- }
-
- /* Resubmit urb so we continue receiving */
- urb->dev = port->serial->dev;
- if ((err = usb_submit_urb(urb)) != 0) {
- dbg(__FUNCTION__ "resubmit read urb failed. (%d)n", err);
- }
- return;
- }
- /* Outdat handling is common for usa26, usa28 and usa49 messages */
- static void usa2x_outdat_callback(struct urb *urb)
- {
- struct usb_serial_port *port;
- struct keyspan_port_private *p_priv;
- port = (struct usb_serial_port *) urb->context;
- p_priv = (struct keyspan_port_private *)(port->private);
- dbg (__FUNCTION__ " urb %dn", urb == p_priv->out_urbs[1]);
- if (port->active) {
- queue_task(&port->tqueue, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
- }
- }
- static void usa26_inack_callback(struct urb *urb)
- {
- dbg ("%sn", __FUNCTION__);
-
- }
- static void usa26_outcont_callback(struct urb *urb)
- {
- struct usb_serial_port *port;
- struct keyspan_port_private *p_priv;
- port = (struct usb_serial_port *) urb->context;
- p_priv = (struct keyspan_port_private *)(port->private);
- if (p_priv->resend_cont) {
- dbg (__FUNCTION__ " sending setupn");
- keyspan_usa26_send_setup(port->serial, port, 0);
- }
- }
- static void usa26_instat_callback(struct urb *urb)
- {
- unsigned char *data = urb->transfer_buffer;
- keyspan_usa26_portStatusMessage *msg;
- struct usb_serial *serial;
- struct usb_serial_port *port;
- struct keyspan_port_private *p_priv;
- int old_dcd_state, err;
- serial = (struct usb_serial *) urb->context;
- if (urb->status) {
- dbg(__FUNCTION__ " nonzero status: %xn", urb->status);
- return;
- }
- if (urb->actual_length != 9) {
- dbg(__FUNCTION__ " %d byte report??n", urb->actual_length);
- goto exit;
- }
- msg = (keyspan_usa26_portStatusMessage *)data;
- #if 0
- dbg(__FUNCTION__ " port status: port %d cts %d dcd %d dsr %d ri %d toff %d txoff %d rxen %d cr %dn",
- msg->port, msg->hskia_cts, msg->gpia_dcd, msg->dsr, msg->ri, msg->_txOff,
- msg->_txXoff, msg->rxEnabled, msg->controlResponse);
- #endif
- /* Now do something useful with the data */
- /* Check port number from message and retrieve private data */
- if (msg->port >= serial->num_ports) {
- dbg ("Unexpected port number %dn", msg->port);
- goto exit;
- }
- port = &serial->port[msg->port];
- p_priv = (struct keyspan_port_private *)(port->private);
-
- /* Update handshaking pin state information */
- old_dcd_state = p_priv->dcd_state;
- p_priv->cts_state = ((msg->hskia_cts) ? 1 : 0);
- p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
- p_priv->dcd_state = ((msg->gpia_dcd) ? 1 : 0);
- p_priv->ri_state = ((msg->ri) ? 1 : 0);
- if (port->tty && !C_CLOCAL(port->tty)
- && old_dcd_state != p_priv->dcd_state) {
- if (old_dcd_state)
- tty_hangup(port->tty);
- /* else */
- /* wake_up_interruptible(&p_priv->open_wait); */
- }
-
- exit:
- /* Resubmit urb so we continue receiving */
- urb->dev = serial->dev;
- if ((err = usb_submit_urb(urb)) != 0) {
- dbg(__FUNCTION__ "resubmit read urb failed. (%d)n", err);
- }
- }
- static void usa26_glocont_callback(struct urb *urb)
- {
- dbg ("%sn", __FUNCTION__);
-
- }
- static void usa28_indat_callback(struct urb *urb)
- {
- int i, err;
- struct usb_serial_port *port;
- struct tty_struct *tty;
- unsigned char *data;
- struct keyspan_port_private *p_priv;
- dbg ("%sn", __FUNCTION__);
- port = (struct usb_serial_port *) urb->context;
- p_priv = (struct keyspan_port_private *)(port->private);
- data = urb->transfer_buffer;
- if (urb != p_priv->in_urbs[p_priv->in_flip])
- return;
- do {
- if (urb->status) {
- dbg(__FUNCTION__ "nonzero status: %x on endpoint
- %d.n",
- urb->status, usb_pipeendpoint(urb->pipe));
- return;
- }
- port = (struct usb_serial_port *) urb->context;
- p_priv = (struct keyspan_port_private *)(port->private);
- data = urb->transfer_buffer;
- tty = port->tty;
- if (urb->actual_length) {
- for (i = 0; i < urb->actual_length ; ++i) {
- tty_insert_flip_char(tty, data[i], 0);
- }
- tty_flip_buffer_push(tty);
- }
- /* Resubmit urb so we continue receiving */
- urb->dev = port->serial->dev;
- if ((err = usb_submit_urb(urb)) != 0) {
- dbg(__FUNCTION__ "resubmit read urb failed. (%d)n",
- err);
- }
- p_priv->in_flip ^= 1;
- urb = p_priv->in_urbs[p_priv->in_flip];
- } while (urb->status != -EINPROGRESS);
- }
- static void usa28_inack_callback(struct urb *urb)
- {
- dbg ("%sn", __FUNCTION__);
- }
- static void usa28_outcont_callback(struct urb *urb)
- {
- struct usb_serial_port *port;
- struct keyspan_port_private *p_priv;
- port = (struct usb_serial_port *) urb->context;
- p_priv = (struct keyspan_port_private *)(port->private);
- if (p_priv->resend_cont) {
- dbg (__FUNCTION__ " sending setupn");
- keyspan_usa28_send_setup(port->serial, port, 0);
- }
- }
- static void usa28_instat_callback(struct urb *urb)
- {
- int err;
- unsigned char *data = urb->transfer_buffer;
- keyspan_usa28_portStatusMessage *msg;
- struct usb_serial *serial;
- struct usb_serial_port *port;
- struct keyspan_port_private *p_priv;
- int old_dcd_state;
- serial = (struct usb_serial *) urb->context;
- if (urb->status) {
- dbg(__FUNCTION__ " nonzero status: %xn", urb->status);
- return;
- }
- if (urb->actual_length != sizeof(struct keyspan_usa28_portStatusMessage)) {
- dbg(__FUNCTION__ " bad length %dn", urb->actual_length);
- goto exit;
- }
- /*dbg(__FUNCTION__ " %x %x %x %x %x %x %x %x %x %x %x %xn",
- data[0], data[1], data[2], data[3], data[4], data[5],
- data[6], data[7], data[8], data[9], data[10], data[11]);*/
-
- /* Now do something useful with the data */
- msg = (keyspan_usa28_portStatusMessage *)data;
- /* Check port number from message and retrieve private data */
- if (msg->port >= serial->num_ports) {
- dbg ("Unexpected port number %dn", msg->port);
- goto exit;
- }
- port = &serial->port[msg->port];
- p_priv = (struct keyspan_port_private *)(port->private);
-
- /* Update handshaking pin state information */
- old_dcd_state = p_priv->dcd_state;
- p_priv->cts_state = ((msg->cts) ? 1 : 0);
- p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
- p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
- p_priv->ri_state = ((msg->ri) ? 1 : 0);
- if (port->tty && !C_CLOCAL(port->tty)
- && old_dcd_state != p_priv->dcd_state) {
- if (old_dcd_state)
- tty_hangup(port->tty);
- /* else */
- /* wake_up_interruptible(&p_priv->open_wait); */
- }
- exit:
- /* Resubmit urb so we continue receiving */
- urb->dev = serial->dev;
- if ((err = usb_submit_urb(urb)) != 0) {
- dbg(__FUNCTION__ "resubmit read urb failed. (%d)n", err);
- }
- }
- static void usa28_glocont_callback(struct urb *urb)
- {
- dbg ("%sn", __FUNCTION__);
- }
- static void usa49_glocont_callback(struct urb *urb)
- {
- struct usb_serial *serial;
- struct usb_serial_port *port;
- struct keyspan_port_private *p_priv;
- int i;
- dbg ("%sn", __FUNCTION__);
- serial = (struct usb_serial *) urb->context;
- for (i = 0; i < serial->num_ports; ++i) {
- port = &serial->port[i];
- p_priv = (struct keyspan_port_private *)(port->private);
- if (p_priv->resend_cont) {
- dbg (__FUNCTION__ " sending setupn");
- keyspan_usa49_send_setup(serial, port, 0);
- break;
- }
- }
- }
- /* This is actually called glostat in the Keyspan
- doco */
- static void usa49_instat_callback(struct urb *urb)
- {
- int err;
- unsigned char *data = urb->transfer_buffer;
- keyspan_usa49_portStatusMessage *msg;
- struct usb_serial *serial;
- struct usb_serial_port *port;
- struct keyspan_port_private *p_priv;
- int old_dcd_state;
- dbg ("%sn", __FUNCTION__);
- serial = (struct usb_serial *) urb->context;
- if (urb->status) {
- dbg(__FUNCTION__ " nonzero status: %xn", urb->status);
- return;
- }
- if (urb->actual_length != sizeof(struct keyspan_usa49_portStatusMessage)) {
- dbg(__FUNCTION__ " bad length %dn", urb->actual_length);
- goto exit;
- }
- /*dbg(__FUNCTION__ " %x %x %x %x %x %x %x %x %x %x %xn",
- data[0], data[1], data[2], data[3], data[4], data[5],
- data[6], data[7], data[8], data[9], data[10]);*/
-
- /* Now do something useful with the data */
- msg = (keyspan_usa49_portStatusMessage *)data;
- /* Check port number from message and retrieve private data */
- if (msg->portNumber >= serial->num_ports) {
- dbg ("Unexpected port number %dn", msg->portNumber);
- goto exit;
- }
- port = &serial->port[msg->portNumber];
- p_priv = (struct keyspan_port_private *)(port->private);
-
- /* Update handshaking pin state information */
- old_dcd_state = p_priv->dcd_state;
- p_priv->cts_state = ((msg->cts) ? 1 : 0);
- p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
- p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
- p_priv->ri_state = ((msg->ri) ? 1 : 0);
- if (port->tty && !C_CLOCAL(port->tty)
- && old_dcd_state != p_priv->dcd_state) {
- if (old_dcd_state)
- tty_hangup(port->tty);
- /* else */
- /* wake_up_interruptible(&p_priv->open_wait); */
- }
- exit:
- /* Resubmit urb so we continue receiving */
- urb->dev = serial->dev;
- if ((err = usb_submit_urb(urb)) != 0) {
- dbg(__FUNCTION__ "resubmit read urb failed. (%d)n", err);
- }
- }
- static void usa49_inack_callback(struct urb *urb)
- {
- dbg ("%sn", __FUNCTION__);
- }
- static void usa49_indat_callback(struct urb *urb)
- {
- int i, err;
- int endpoint;
- struct usb_serial_port *port;
- struct tty_struct *tty;
- unsigned char *data = urb->transfer_buffer;
- dbg ("%sn", __FUNCTION__);
- endpoint = usb_pipeendpoint(urb->pipe);
- if (urb->status) {
- dbg(__FUNCTION__ "nonzero status: %x on endpoint %d.n",
- urb->status, endpoint);
- return;
- }
- port = (struct usb_serial_port *) urb->context;
- tty = port->tty;
- if (urb->actual_length) {
- if (data[0] == 0) {
- /* no error on any byte */
- for (i = 1; i < urb->actual_length ; ++i) {
- tty_insert_flip_char(tty, data[i], 0);
- }
- } else {
- /* some bytes had errors, every byte has status */
- for (i = 0; i + 1 < urb->actual_length; i += 2) {
- int stat = data[i], flag = 0;
- if (stat & RXERROR_OVERRUN)
- flag |= TTY_OVERRUN;
- if (stat & RXERROR_FRAMING)
- flag |= TTY_FRAME;
- if (stat & RXERROR_PARITY)
- flag |= TTY_PARITY;
- /* XXX should handle break (0x10) */
- tty_insert_flip_char(tty, data[i+1], flag);
- }
- }
- tty_flip_buffer_push(tty);
- }
-
- /* Resubmit urb so we continue receiving */
- urb->dev = port->serial->dev;
- if ((err = usb_submit_urb(urb)) != 0) {
- dbg(__FUNCTION__ "resubmit read urb failed. (%d)n", err);
- }
- }
- /* not used, usa-49 doesn't have per-port control endpoints */
- static void usa49_outcont_callback(struct urb *urb)
- {
- dbg ("%sn", __FUNCTION__);
- }
- static int keyspan_write_room (struct usb_serial_port *port)
- {
- dbg("keyspan_write_room calledn");
- return (32);
- }
- static int keyspan_chars_in_buffer (struct usb_serial_port *port)
- {
- return (0);
- }
- static int keyspan_open (struct usb_serial_port *port, struct file *filp)
- {
- struct keyspan_port_private *p_priv;
- struct keyspan_serial_private *s_priv;
- struct usb_serial *serial = port->serial;
- const keyspan_device_details *d_details;
- int i, already_active, err;
- urb_t *urb;
- s_priv = (struct keyspan_serial_private *)(serial->private);
- p_priv = (struct keyspan_port_private *)(port->private);
- d_details = s_priv->device_details;
-
- dbg("keyspan_open called for port%d.n", port->number);
- MOD_INC_USE_COUNT;
- down (&port->sem);
- ++port->open_count;
- already_active = port->active;
- port->active = 1;
- up (&port->sem);
- if (already_active)
- return 0;
- p_priv = (struct keyspan_port_private *)(port->private);
-
- /* Set some sane defaults */
- p_priv->rts_state = 1;
- p_priv->dtr_state = 1;
- /* Start reading from endpoints */
- for (i = 0; i < 2; i++) {
- if ((urb = p_priv->in_urbs[i]) == NULL)
- continue;
- urb->dev = serial->dev;
- if ((err = usb_submit_urb(urb)) != 0) {
- dbg(__FUNCTION__ " submit urb %d failed (%d)n", i, err);
- }
- }
- keyspan_set_termios(port, NULL);
- return (0);
- }
- static inline void stop_urb(urb_t *urb)
- {
- if (urb && urb->status == -EINPROGRESS) {
- urb->transfer_flags &= ~USB_ASYNC_UNLINK;
- usb_unlink_urb(urb);
- }
- }
- static void keyspan_close(struct usb_serial_port *port, struct file *filp)
- {
- int i;
- struct usb_serial *serial;
- struct keyspan_serial_private *s_priv;
- struct keyspan_port_private *p_priv;
- serial = get_usb_serial (port, __FUNCTION__);
- if (!serial)
- return;
- dbg("keyspan_close calledn");
- s_priv = (struct keyspan_serial_private *)(serial->private);
- p_priv = (struct keyspan_port_private *)(port->private);
-
- p_priv->rts_state = 0;
- p_priv->dtr_state = 0;
-
- if (serial->dev)
- keyspan_send_setup(port, 1);
- /*while (p_priv->outcont_urb->status == -EINPROGRESS) {
- dbg("close - urb in progressn");
- }*/
- p_priv->out_flip = 0;
- p_priv->in_flip = 0;
- down (&port->sem);
- if (--port->open_count <= 0) {
- if (port->active) {
- if (serial->dev) {
- /* Stop reading/writing urbs */
- stop_urb(p_priv->inack_urb);
- stop_urb(p_priv->outcont_urb);
- for (i = 0; i < 2; i++) {
- stop_urb(p_priv->in_urbs[i]);
- stop_urb(p_priv->out_urbs[i]);
- }
- }
- }
- port->active = 0;
- port->open_count = 0;
- port->tty = 0;
- }
- up (&port->sem);
- MOD_DEC_USE_COUNT;
- }
- /* download the firmware to a pre-renumeration device */
- static int keyspan_fake_startup (struct usb_serial *serial)
- {
- int response;
- const struct ezusb_hex_record *record;
- char *fw_name;
- dbg("Keyspan startup version %04x product %04xn",
- serial->dev->descriptor.bcdDevice,
- serial->dev->descriptor.idProduct);
-
- if ((serial->dev->descriptor.bcdDevice & 0x8000) != 0x8000) {
- dbg("Firmware already loaded. Quitting.n");
- return(1);
- }
- /* Select firmware image on the basis of idProduct */
- switch (serial->dev->descriptor.idProduct) {
- case keyspan_usa28_pre_product_id:
- record = &keyspan_usa28_firmware[0];
- fw_name = "USA28";
- break;
- case keyspan_usa28x_pre_product_id:
- record = &keyspan_usa28x_firmware[0];
- fw_name = "USA28X";
- break;
- case keyspan_usa28xa_pre_product_id:
- record = &keyspan_usa28xa_firmware[0];
- fw_name = "USA28XA";
- break;
- case keyspan_usa28xb_pre_product_id:
- record = &keyspan_usa28xb_firmware[0];
- fw_name = "USA28XB";
- break;
- case keyspan_usa19_pre_product_id:
- record = &keyspan_usa19_firmware[0];
- fw_name = "USA19";
- break;
-
- case keyspan_usa18x_pre_product_id:
- record = &keyspan_usa18x_firmware[0];
- fw_name = "USA18X";
- break;
-
- case keyspan_usa19w_pre_product_id:
- record = &keyspan_usa19w_firmware[0];
- fw_name = "USA19W";
- break;
-
- case keyspan_usa49w_pre_product_id:
- record = &keyspan_usa49w_firmware[0];
- fw_name = "USA49W";
- break;
- default:
- record = NULL;
- fw_name = "Unknown";
- break;
- }
- if (record == NULL) {
- err("Required keyspan firmware image (%s) unavailable.", fw_name);
- return(1);
- }
- dbg("Uploading Keyspan %s firmware.n", fw_name);
- /* download the firmware image */
- response = ezusb_set_reset(serial, 1);
- while(record->address != 0xffff) {
- response = ezusb_writememory(serial, record->address,
- (unsigned char *)record->data,
- record->data_size, 0xa0);
- if (response < 0) {
- err("ezusb_writememory failed for Keyspan"
- "firmware (%d %04X %p %d)",
- response,
- record->address, record->data, record->data_size);
- break;
- }
- record++;
- }
- /* bring device out of reset. Renumeration will occur in a
- moment and the new device will bind to the real driver */
- response = ezusb_set_reset(serial, 0);
- /* we don't want this device to have a driver assigned to it. */
- return (1);
- }
- /* Helper functions used by keyspan_setup_urbs */
- static urb_t *keyspan_setup_urb(struct usb_serial *serial, int endpoint,
- int dir, void *ctx, char *buf, int len,
- void (*callback)(urb_t *))
- {
- urb_t *urb;
- if (endpoint == -1)
- return NULL; /* endpoint not needed */
- dbg (__FUNCTION__ " alloc for endpoint %d.n", endpoint);
- urb = usb_alloc_urb(0); /* No ISO */
- if (urb == NULL) {
- dbg (__FUNCTION__ " alloc for endpoint %d failed.n", endpoint);
- return NULL;
- }
- /* Fill URB using supplied data. */
- FILL_BULK_URB(urb, serial->dev,
- usb_sndbulkpipe(serial->dev, endpoint) | dir,
- buf, len, callback, ctx);
- return urb;
- }
- static struct callbacks {
- void (*instat_callback)(urb_t *);
- void (*glocont_callback)(urb_t *);
- void (*indat_callback)(urb_t *);
- void (*outdat_callback)(urb_t *);
- void (*inack_callback)(urb_t *);
- void (*outcont_callback)(urb_t *);
- } keyspan_callbacks[] = {
- {
- /* msg_usa26 callbacks */
- instat_callback: usa26_instat_callback,
- glocont_callback: usa26_glocont_callback,
- indat_callback: usa26_indat_callback,
- outdat_callback: usa2x_outdat_callback,
- inack_callback: usa26_inack_callback,
- outcont_callback: usa26_outcont_callback,
- }, {
- /* msg_usa28 callbacks */
- instat_callback: usa28_instat_callback,
- glocont_callback: usa28_glocont_callback,
- indat_callback: usa28_indat_callback,
- outdat_callback: usa2x_outdat_callback,
- inack_callback: usa28_inack_callback,
- outcont_callback: usa28_outcont_callback,
- }, {
- /* msg_usa49 callbacks */
- instat_callback: usa49_instat_callback,
- glocont_callback: usa49_glocont_callback,
- indat_callback: usa49_indat_callback,
- outdat_callback: usa2x_outdat_callback,
- inack_callback: usa49_inack_callback,
- outcont_callback: usa49_outcont_callback,
- }
- };
- /* Generic setup urbs function that uses
- data in device_details */
- static void keyspan_setup_urbs(struct usb_serial *serial)
- {
- int i, j;
- struct keyspan_serial_private *s_priv;
- const keyspan_device_details *d_details;
- struct usb_serial_port *port;
- struct keyspan_port_private *p_priv;
- struct callbacks *cback;
- int endp;
- dbg ("%sn", __FUNCTION__);
- s_priv = (struct keyspan_serial_private *)(serial->private);
- d_details = s_priv->device_details;
- /* Setup values for the various callback routines */
- cback = &keyspan_callbacks[d_details->msg_format];
- /* Allocate and set up urbs for each one that is in use,
- starting with instat endpoints */
- s_priv->instat_urb = keyspan_setup_urb
- (serial, d_details->instat_endpoint, USB_DIR_IN,
- serial, s_priv->instat_buf, INSTAT_BUFLEN,
- cback->instat_callback);
- s_priv->glocont_urb = keyspan_setup_urb
- (serial, d_details->glocont_endpoint, USB_DIR_OUT,
- serial, s_priv->glocont_buf, GLOCONT_BUFLEN,
- cback->glocont_callback);
- /* Setup endpoints for each port specific thing */
- for (i = 0; i < d_details->num_ports; i ++) {
- port = &serial->port[i];
- p_priv = (struct keyspan_port_private *)(port->private);
- /* Do indat endpoints first, once for each flip */
- endp = d_details->indat_endpoints[i];
- for (j = 0; j <= d_details->indat_endp_flip; ++j, ++endp) {
- p_priv->in_urbs[j] = keyspan_setup_urb
- (serial, endp, USB_DIR_IN, port,
- p_priv->in_buffer[j], 64,
- cback->indat_callback);
- }
- for (; j < 2; ++j)
- p_priv->in_urbs[j] = NULL;
- /* outdat endpoints also have flip */
- endp = d_details->outdat_endpoints[i];
- for (j = 0; j <= d_details->outdat_endp_flip; ++j, ++endp) {
- p_priv->out_urbs[j] = keyspan_setup_urb
- (serial, endp, USB_DIR_OUT, port,
- p_priv->out_buffer[j], 64,
- cback->outdat_callback);
- }
- for (; j < 2; ++j)
- p_priv->out_urbs[j] = NULL;
- /* inack endpoint */
- p_priv->inack_urb = keyspan_setup_urb
- (serial, d_details->inack_endpoints[i], USB_DIR_IN,
- port, p_priv->inack_buffer, 1, cback->inack_callback);
- /* outcont endpoint */
- p_priv->outcont_urb = keyspan_setup_urb
- (serial, d_details->outcont_endpoints[i], USB_DIR_OUT,
- port, p_priv->outcont_buffer, 64,
- cback->outcont_callback);
- }
- }
- /* usa19 function doesn't require prescaler */
- static int keyspan_usa19_calc_baud(u32 baud_rate, u32 baudclk,
- u8 *rate_hi, u8 *rate_low, u8 *prescaler)
- {
- u32 b16, /* baud rate times 16 (actual rate used internally) */
- div, /* divisor */
- cnt; /* inverse of divisor (programmed into 8051) */
-
- /* prevent divide by zero... */
- if( (b16 = (baud_rate * 16L)) == 0) {
- return (KEYSPAN_INVALID_BAUD_RATE);
- }
- /* Any "standard" rate over 57k6 is marginal on the USA-19
- as we run out of divisor resolution. */
- if (baud_rate > 57600) {
- return (KEYSPAN_INVALID_BAUD_RATE);
- }
- /* calculate the divisor and the counter (its inverse) */
- if( (div = (baudclk / b16)) == 0) {
- return (KEYSPAN_INVALID_BAUD_RATE);
- }
- else {
- cnt = 0 - div;
- }
- if(div > 0xffff) {
- return (KEYSPAN_INVALID_BAUD_RATE);
- }
- /* return the counter values if non-null */
- if (rate_low) {
- *rate_low = (u8) (cnt & 0xff);
- }
- if (rate_hi) {
- *rate_hi = (u8) ((cnt >> 8) & 0xff);
- }
- if (rate_low && rate_hi) {
- dbg (__FUNCTION__ " %d %02x %02x.", baud_rate, *rate_hi, *rate_low);
- }
-
- return (KEYSPAN_BAUD_RATE_OK);
- }
- static int keyspan_usa19w_calc_baud(u32 baud_rate, u32 baudclk,
- u8 *rate_hi, u8 *rate_low, u8 *prescaler)
- {
- u32 b16, /* baud rate times 16 (actual rate used internally) */
- clk, /* clock with 13/8 prescaler */
- div, /* divisor using 13/8 prescaler */
- res, /* resulting baud rate using 13/8 prescaler */
- diff, /* error using 13/8 prescaler */
- smallest_diff;
- u8 best_prescaler;
- int i;
- dbg (__FUNCTION__ " %d.n", baud_rate);
- /* prevent divide by zero */
- if( (b16 = baud_rate * 16L) == 0) {
- return (KEYSPAN_INVALID_BAUD_RATE);
- }
- /* Calculate prescaler by trying them all and looking
- for best fit */
-
- /* start with largest possible difference */
- smallest_diff = 0xffffffff;
- /* 0 is an invalid prescaler, used as a flag */
- best_prescaler = 0;
- for(i = 8; i <= 0xff; ++i)
- {
- clk = (baudclk * 8) / (u32) i;
-
- if( (div = clk / b16) == 0) {
- continue;
- }
- res = clk / div;
- diff= (res > b16) ? (res-b16) : (b16-res);
- if(diff < smallest_diff)
- {
- best_prescaler = i;
- smallest_diff = diff;
- }
- }
- if(best_prescaler == 0) {
- return (KEYSPAN_INVALID_BAUD_RATE);
- }
- clk = (baudclk * 8) / (u32) best_prescaler;
- div = clk / b16;
- /* return the divisor and prescaler if non-null */
- if (rate_low) {
- *rate_low = (u8) (div & 0xff);
- }
- if (rate_hi) {
- *rate_hi = (u8) ((div >> 8) & 0xff);
- }
- if (prescaler) {
- *prescaler = best_prescaler;
- /* dbg(__FUNCTION__ " %d %d", *prescaler, div); */
- }
- return (KEYSPAN_BAUD_RATE_OK);
- }
- static int keyspan_usa26_send_setup(struct usb_serial *serial,
- struct usb_serial_port *port,
- int reset_port)
- {
- struct keyspan_usa26_portControlMessage msg;
- struct keyspan_serial_private *s_priv;
- struct keyspan_port_private *p_priv;
- const keyspan_device_details *d_details;
- int outcont_urb;
- urb_t *this_urb;
- int err;
- dbg ("%s reset=%dn", __FUNCTION__, reset_port);
- s_priv = (struct keyspan_serial_private *)(serial->private);
- p_priv = (struct keyspan_port_private *)(port->private);
- d_details = s_priv->device_details;
- outcont_urb = d_details->outcont_endpoints[port->number];
- this_urb = p_priv->outcont_urb;
- dbg(__FUNCTION__ " endpoint %dn", usb_pipeendpoint(this_urb->pipe));
- /* Make sure we have an urb then send the message */
- if (this_urb == NULL) {
- dbg(__FUNCTION__ " oops no urb.n");
- return -1;
- }
- p_priv->resend_cont = 1;
- if (this_urb->status == -EINPROGRESS) {
- /* dbg (__FUNCTION__ " already writing"); */
- return(-1);
- }
- memset(&msg, 0, sizeof (struct keyspan_usa26_portControlMessage));
-
- /* Only set baud rate if it's changed */
- if (p_priv->old_baud != p_priv->baud) {
- p_priv->old_baud = p_priv->baud;
- msg.setClocking = 0xff;
- if (d_details->calculate_baud_rate
- (p_priv->baud, d_details->baudclk, &msg.baudHi,
- &msg.baudLo, &msg.prescaler) == KEYSPAN_INVALID_BAUD_RATE ) {
- dbg(__FUNCTION__ "Invalid baud rate %d requested, using 9600.n",
- p_priv->baud);
- msg.baudLo = 0;
- msg.baudHi = 125; /* Values for 9600 baud */
- msg.prescaler = 10;
- }
- msg.setPrescaler = 0xff;
- }
- msg.lcr = (p_priv->cflag & CSTOPB)? STOPBITS_678_2: STOPBITS_5678_1;
- switch (p_priv->cflag & CSIZE) {
- case CS5:
- msg.lcr |= USA_DATABITS_5;
- break;
- case CS6:
- msg.lcr |= USA_DATABITS_6;
- break;
- case CS7:
- msg.lcr |= USA_DATABITS_7;
- break;
- case CS8:
- msg.lcr |= USA_DATABITS_8;
- break;
- }
- if (p_priv->cflag & PARENB) {
- /* note USA_PARITY_NONE == 0 */
- msg.lcr |= (p_priv->cflag & PARODD)?
- USA_PARITY_ODD: USA_PARITY_EVEN;
- }
- msg.setLcr = 0xff;
- msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
- msg.xonFlowControl = 0;
- msg.setFlowControl = 0xff;
-
- msg.forwardingLength = 1;
- msg.xonChar = 17;
- msg.xoffChar = 19;
- if (reset_port) {
- msg._txOn = 0;
- msg._txOff = 1;
- msg.txFlush = 0;
- msg.txBreak = 0;
- msg.rxOn = 0;
- msg.rxOff = 1;
- msg.rxFlush = 1;
- msg.rxForward = 0;
- msg.returnStatus = 0;
- msg.resetDataToggle = 0xff;
- }
- else {
- msg._txOn = (! p_priv->break_on);
- msg._txOff = 0;
- msg.txFlush = 0;
- msg.txBreak = (p_priv->break_on);
- msg.rxOn = 1;
- msg.rxOff = 0;
- msg.rxFlush = 0;
- msg.rxForward = 0;
- msg.returnStatus = 0;
- msg.resetDataToggle = 0x0;
- }
- /* Do handshaking outputs */
- msg.setTxTriState_setRts = 0xff;
- msg.txTriState_rts = p_priv->rts_state;
- msg.setHskoa_setDtr = 0xff;
- msg.hskoa_dtr = p_priv->dtr_state;
-
- p_priv->resend_cont = 0;
- memcpy (this_urb->transfer_buffer, &msg, sizeof(msg));
-
- /* send the data out the device on control endpoint */
- this_urb->transfer_buffer_length = sizeof(msg);
- this_urb->dev = serial->dev;
- if ((err = usb_submit_urb(this_urb)) != 0) {
- dbg(__FUNCTION__ " usb_submit_urb(setup) failed (%d)n", err);
- }
- #if 0
- else {
- dbg(__FUNCTION__ " usb_submit_urb(%d) OK %d bytes (end %d)",
- outcont_urb, this_urb->transfer_buffer_length,
- usb_pipeendpoint(this_urb->pipe));
- }
- #endif
- return (0);
- }
- static int keyspan_usa28_send_setup(struct usb_serial *serial,
- struct usb_serial_port *port,
- int reset_port)
- {
- struct keyspan_usa28_portControlMessage msg;
- struct keyspan_serial_private *s_priv;
- struct keyspan_port_private *p_priv;
- const keyspan_device_details *d_details;
- urb_t *this_urb;
- int err;
- s_priv = (struct keyspan_serial_private *)(serial->private);
- p_priv = (struct keyspan_port_private *)(port->private);
- d_details = s_priv->device_details;
- /* only do something if we have a bulk out endpoint */
- if ((this_urb = p_priv->outcont_urb) == NULL) {
- dbg(__FUNCTION__ " oops no urb.n");
- return -1;
- }
- p_priv->resend_cont = 1;
- if (this_urb->status == -EINPROGRESS) {
- dbg (__FUNCTION__ " already writingn");
- return(-1);
- }
- memset(&msg, 0, sizeof (struct keyspan_usa28_portControlMessage));
- msg.setBaudRate = 1;
- if (keyspan_usa19_calc_baud(p_priv->baud, d_details->baudclk,
- &msg.baudHi, &msg.baudLo, NULL) == KEYSPAN_INVALID_BAUD_RATE ) {
- dbg(__FUNCTION__ "Invalid baud rate requested %d.", p_priv->baud);
- msg.baudLo = 0xff;
- msg.baudHi = 0xb2; /* Values for 9600 baud */
- }
- /* If parity is enabled, we must calculate it ourselves. */
- msg.parity = 0; /* XXX for now */
- msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
- msg.xonFlowControl = 0;
- /* Do handshaking outputs, DTR is inverted relative to RTS */
- msg.rts = p_priv->rts_state;
- msg.dtr = p_priv->dtr_state;
- msg.forwardingLength = 1;
- msg.forwardMs = 10;
- msg.breakThreshold = 45;
- msg.xonChar = 17;
- msg.xoffChar = 19;
- msg._txOn = 1;
- msg._txOff = 0;
- msg.txFlush = 0;
- msg.txForceXoff = 0;
- msg.txBreak = 0;
- msg.rxOn = 1;
- msg.rxOff = 0;
- msg.rxFlush = 0;
- msg.rxForward = 0;
- /*msg.returnStatus = 1;
- msg.resetDataToggle = 0xff;*/
- p_priv->resend_cont = 0;
- memcpy (this_urb->transfer_buffer, &msg, sizeof(msg));
- /* send the data out the device on control endpoint */
- this_urb->transfer_buffer_length = sizeof(msg);
- this_urb->dev = serial->dev;
- if ((err = usb_submit_urb(this_urb)) != 0) {
- dbg(__FUNCTION__ " usb_submit_urb(setup) failedn");
- }
- #if 0
- else {
- dbg(__FUNCTION__ " usb_submit_urb(setup) OK %d bytes",
- this_urb->transfer_buffer_length);
- }
- #endif
- return (0);
- }
- static int keyspan_usa49_send_setup(struct usb_serial *serial,
- struct usb_serial_port *port,
- int reset_port)
- {
- struct keyspan_usa49_portControlMessage msg;
- struct keyspan_serial_private *s_priv;
- struct keyspan_port_private *p_priv;
- const keyspan_device_details *d_details;
- int glocont_urb;
- urb_t *this_urb;
- int err;
- int device_port;
- dbg ("%sn", __FUNCTION__);
- s_priv = (struct keyspan_serial_private *)(serial->private);
- p_priv = (struct keyspan_port_private *)(port->private);
- d_details = s_priv->device_details;
- glocont_urb = d_details->glocont_endpoint;
- this_urb = s_priv->glocont_urb;
- /* Work out which port within the device is being setup */
- device_port = port->number - port->serial->minor;
- dbg(__FUNCTION__ " endpoint %d port %d (%d)n", usb_pipeendpoint(this_urb->pipe), port->number, device_port);
- /* Make sure we have an urb then send the message */
- if (this_urb == NULL) {
- dbg(__FUNCTION__ " oops no urb for port %d.n", port->number);
- return -1;
- }
- p_priv->resend_cont = 1;
- if (this_urb->status == -EINPROGRESS) {
- /* dbg (__FUNCTION__ " already writing"); */
- return(-1);
- }
- memset(&msg, 0, sizeof (struct keyspan_usa49_portControlMessage));
- /*msg.portNumber = port->number;*/
- msg.portNumber = device_port;
-
- /* Only set baud rate if it's changed */
- if (p_priv->old_baud != p_priv->baud) {
- p_priv->old_baud = p_priv->baud;
- msg.setClocking = 0xff;
- if (d_details->calculate_baud_rate
- (p_priv->baud, d_details->baudclk, &msg.baudHi,
- &msg.baudLo, &msg.prescaler) == KEYSPAN_INVALID_BAUD_RATE ) {
- dbg(__FUNCTION__ "Invalid baud rate %d requested, using 9600.n",
- p_priv->baud);
- msg.baudLo = 0;
- msg.baudHi = 125; /* Values for 9600 baud */
- msg.prescaler = 10;
- }
- //msg.setPrescaler = 0xff;
- }
- msg.lcr = (p_priv->cflag & CSTOPB)? STOPBITS_678_2: STOPBITS_5678_1;
- switch (p_priv->cflag & CSIZE) {
- case CS5:
- msg.lcr |= USA_DATABITS_5;
- break;
- case CS6:
- msg.lcr |= USA_DATABITS_6;
- break;
- case CS7:
- msg.lcr |= USA_DATABITS_7;
- break;
- case CS8:
- msg.lcr |= USA_DATABITS_8;
- break;
- }
- if (p_priv->cflag & PARENB) {
- /* note USA_PARITY_NONE == 0 */
- msg.lcr |= (p_priv->cflag & PARODD)?
- USA_PARITY_ODD: USA_PARITY_EVEN;
- }
- msg.setLcr = 0xff;
- msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
- msg.xonFlowControl = 0;
- msg.setFlowControl = 0xff;
-
- msg.forwardingLength = 1;
- msg.xonChar = 17;
- msg.xoffChar = 19;
-
- msg._txOn = 1;
- msg._txOff = 0;
- msg.txFlush = 0;
- msg.txBreak = 0;
- msg.rxOn = 1;
- msg.rxOff = 0;
- msg.rxFlush = 0;
- msg.rxForward = 0;
- msg.enablePort = 0xff;
- msg.disablePort = 0;
- /* Do handshaking outputs */
- msg.setRts = 0xff;
- msg.rts = p_priv->rts_state;
- msg.setDtr = 0xff;
- msg.dtr = p_priv->dtr_state;
-
- p_priv->resend_cont = 0;
- memcpy (this_urb->transfer_buffer, &msg, sizeof(msg));
-
- /* send the data out the device on control endpoint */
- this_urb->transfer_buffer_length = sizeof(msg);
- this_urb->dev = serial->dev;
- if ((err = usb_submit_urb(this_urb)) != 0) {
- dbg(__FUNCTION__ " usb_submit_urb(setup) failed (%d)n", err);
- }
- #if 0
- else {
- dbg(__FUNCTION__ " usb_submit_urb(%d) OK %d bytes (end %d)",
- outcont_urb, this_urb->transfer_buffer_length,
- usb_pipeendpoint(this_urb->pipe));
- }
- #endif
- return (0);
- }
- static void keyspan_send_setup(struct usb_serial_port *port, int reset_port)
- {
- struct usb_serial *serial = port->serial;
- struct keyspan_serial_private *s_priv;
- const keyspan_device_details *d_details;
- s_priv = (struct keyspan_serial_private *)(serial->private);
- d_details = s_priv->device_details;
- switch (d_details->msg_format) {
- case msg_usa26:
- keyspan_usa26_send_setup(serial, port, reset_port);
- break;
- case msg_usa28:
- keyspan_usa28_send_setup(serial, port, reset_port);
- break;
- case msg_usa49:
- keyspan_usa49_send_setup(serial, port, reset_port);
- break;
- }
- }
- /* Gets called by the "real" driver (ie once firmware is loaded
- and renumeration has taken place. */
- static int keyspan_startup (struct usb_serial *serial)
- {
- int i, err;
- struct usb_serial_port *port;
- struct keyspan_serial_private *s_priv;
- struct keyspan_port_private *p_priv;
- const keyspan_device_details *d_details;
- dbg("keyspan_startup called.n");
- for (i = 0; (d_details = keyspan_devices[i]) != NULL; ++i)
- if (d_details->product_id == serial->dev->descriptor.idProduct)
- break;
- if (d_details == NULL) {
- printk(KERN_ERR __FUNCTION__ ": unknown product id %xn",
- serial->dev->descriptor.idProduct);
- return 1;
- }
- /* Setup private data for serial driver */
- serial->private = kmalloc(sizeof(struct keyspan_serial_private),
- GFP_KERNEL);
- if (!serial->private) {
- dbg(__FUNCTION__ "kmalloc for keyspan_serial_private failed.n");
- return (1);
- }
- memset(serial->private, 0, sizeof(struct keyspan_serial_private));
- s_priv = (struct keyspan_serial_private *)(serial->private);
- s_priv->device_details = d_details;
-
- /* Now setup per port private data */
- for (i = 0; i < serial->num_ports; i++) {
- port = &serial->port[i];
- port->private = kmalloc(sizeof(struct keyspan_port_private),
- GFP_KERNEL);
- if (!port->private) {
- dbg(__FUNCTION__ "kmalloc for keyspan_port_private (%d) failed!.n", i);
- return (1);
- }
- memset(port->private, 0, sizeof(struct keyspan_port_private));
- p_priv = (struct keyspan_port_private *)(port->private);
- p_priv->device_details = d_details;
- }
- keyspan_setup_urbs(serial);
- s_priv->instat_urb->dev = serial->dev;
- if ((err = usb_submit_urb(s_priv->instat_urb)) != 0) {
- dbg(__FUNCTION__ " submit instat urb failed %dn", err);
- }
-
- return (0);
- }
- static void keyspan_shutdown (struct usb_serial *serial)
- {
- int i, j;
- struct usb_serial_port *port;
- struct keyspan_serial_private *s_priv;
- struct keyspan_port_private *p_priv;
- dbg("keyspan_shutdown calledn");
- s_priv = (struct keyspan_serial_private *)(serial->private);
- /* Stop reading/writing urbs */
- stop_urb(s_priv->instat_urb);
- stop_urb(s_priv->glocont_urb);
- for (i = 0; i < serial->num_ports; ++i) {
- port = &serial->port[i];
- p_priv = (struct keyspan_port_private *)(port->private);
- stop_urb(p_priv->inack_urb);
- stop_urb(p_priv->outcont_urb);
- for (j = 0; j < 2; j++) {
- stop_urb(p_priv->in_urbs[j]);
- stop_urb(p_priv->out_urbs[j]);
- }
- }
- /* Now free them */
- if (s_priv->instat_urb)
- usb_free_urb(s_priv->instat_urb);
- if (s_priv->glocont_urb)
- usb_free_urb(s_priv->glocont_urb);
- for (i = 0; i < serial->num_ports; ++i) {
- port = &serial->port[i];
- p_priv = (struct keyspan_port_private *)(port->private);
- if (p_priv->inack_urb)
- usb_free_urb(p_priv->inack_urb);
- if (p_priv->outcont_urb)
- usb_free_urb(p_priv->outcont_urb);
- for (j = 0; j < 2; j++) {
- if (p_priv->in_urbs[j])
- usb_free_urb(p_priv->in_urbs[j]);
- if (p_priv->out_urbs[j])
- usb_free_urb(p_priv->out_urbs[j]);
- }
- }
- /* dbg("Freeing serial->private."); */
- kfree(serial->private);
- /* dbg("Freeing port->private."); */
- /* Now free per port private data */
- for (i = 0; i < serial->num_ports; i++) {
- port = &serial->port[i];
- while (port->open_count > 0) {
- --port->open_count;
- MOD_DEC_USE_COUNT;
- }
- kfree(port->private);
- }
- }
- MODULE_AUTHOR( DRIVER_AUTHOR );
- MODULE_DESCRIPTION( DRIVER_DESC );
- MODULE_LICENSE("GPL");
- MODULE_PARM(debug, "i");
- MODULE_PARM_DESC(debug, "Debug enabled or not");