/*
* KLSI KL5KUSB105 chip RS232 converter driver
*
+ * Copyright (C) 2010 Johan Hovold <jhovold@gmail.com>
* Copyright (C) 2001 Utz-Uwe Haus <haus@uuhaus.de>
*
* This program is free software; you can redistribute it and/or modify
* Neither Palm, nor their contractor (MCCI) or their supplier (KLSI) provided
* information that was not already available.
*
- * It seems that KLSI bought some silicon-design information from ScanLogic,
+ * It seems that KLSI bought some silicon-design information from ScanLogic,
* whose SL11R processor is at the core of the KL5KUSB chipset from KLSI.
* KLSI has firmware available for their devices; it is probable that the
* firmware differs from that used by KLSI in their products. If you have an
- * original KLSI device and can provide some information on it, I would be
- * most interested in adding support for it here. If you have any information
+ * original KLSI device and can provide some information on it, I would be
+ * most interested in adding support for it here. If you have any information
* on the protocol used (or find errors in my reverse-engineered stuff), please
* let me know.
*
* implement handshaking or decide that we do not support it
*/
-/* History:
- * 0.3a - implemented pools of write URBs
- * 0.3 - alpha version for public testing
- * 0.2 - TIOCMGET works, so autopilot(1) can be used!
- * 0.1 - can be used to to pilot-xfer -p /dev/ttyUSB0 -l
- *
- * The driver skeleton is mainly based on mct_u232.c and various other
- * pieces of code shamelessly copied from the drivers/usb/serial/ directory.
- */
-
-
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
+#include <asm/unaligned.h>
#include <linux/usb.h>
-#include "usb-serial.h"
+#include <linux/usb/serial.h>
#include "kl5kusb105.h"
static int debug;
/*
* Version Information
*/
-#define DRIVER_VERSION "v0.3a"
-#define DRIVER_AUTHOR "Utz-Uwe Haus <haus@uuhaus.de>"
+#define DRIVER_VERSION "v0.4"
+#define DRIVER_AUTHOR "Utz-Uwe Haus <haus@uuhaus.de>, Johan Hovold <jhovold@gmail.com>"
#define DRIVER_DESC "KLSI KL5KUSB105 chipset USB->Serial Converter driver"
/*
* Function prototypes
*/
-static int klsi_105_startup (struct usb_serial *serial);
-static void klsi_105_shutdown (struct usb_serial *serial);
-static int klsi_105_open (struct usb_serial_port *port,
- struct file *filp);
-static void klsi_105_close (struct usb_serial_port *port,
- struct file *filp);
-static int klsi_105_write (struct usb_serial_port *port,
- const unsigned char *buf,
- int count);
-static void klsi_105_write_bulk_callback (struct urb *urb, struct pt_regs *regs);
-static int klsi_105_chars_in_buffer (struct usb_serial_port *port);
-static int klsi_105_write_room (struct usb_serial_port *port);
-
-static void klsi_105_read_bulk_callback (struct urb *urb, struct pt_regs *regs);
-static void klsi_105_set_termios (struct usb_serial_port *port,
- struct termios * old);
-static int klsi_105_ioctl (struct usb_serial_port *port,
- struct file * file,
- unsigned int cmd,
- unsigned long arg);
-static void klsi_105_throttle (struct usb_serial_port *port);
-static void klsi_105_unthrottle (struct usb_serial_port *port);
-/*
-static void klsi_105_break_ctl (struct usb_serial_port *port,
- int break_state );
- */
-static int klsi_105_tiocmget (struct usb_serial_port *port,
- struct file *file);
-static int klsi_105_tiocmset (struct usb_serial_port *port,
- struct file *file, unsigned int set,
- unsigned int clear);
+static int klsi_105_startup(struct usb_serial *serial);
+static void klsi_105_release(struct usb_serial *serial);
+static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port);
+static void klsi_105_close(struct usb_serial_port *port);
+static void klsi_105_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port, struct ktermios *old);
+static int klsi_105_tiocmget(struct tty_struct *tty, struct file *file);
+static int klsi_105_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear);
+static void klsi_105_process_read_urb(struct urb *urb);
+static int klsi_105_prepare_write_buffer(struct usb_serial_port *port,
+ void *dest, size_t size);
/*
* All of the device info needed for the KLSI converters.
*/
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
{ USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) },
{ USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) },
{ } /* Terminating entry */
};
-MODULE_DEVICE_TABLE (usb, id_table);
+MODULE_DEVICE_TABLE(usb, id_table);
static struct usb_driver kl5kusb105d_driver = {
.name = "kl5kusb105d",
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
.id_table = id_table,
- .no_dynamic_id = 1,
+ .no_dynamic_id = 1,
};
static struct usb_serial_driver kl5kusb105d_device = {
.owner = THIS_MODULE,
.name = "kl5kusb105d",
},
- .description = "KL5KUSB105D / PalmConnect",
- .id_table = id_table,
- .num_interrupt_in = 1,
- .num_bulk_in = 1,
- .num_bulk_out = 1,
- .num_ports = 1,
- .open = klsi_105_open,
- .close = klsi_105_close,
- .write = klsi_105_write,
- .write_bulk_callback = klsi_105_write_bulk_callback,
- .chars_in_buffer = klsi_105_chars_in_buffer,
- .write_room = klsi_105_write_room,
- .read_bulk_callback =klsi_105_read_bulk_callback,
- .ioctl = klsi_105_ioctl,
- .set_termios = klsi_105_set_termios,
- /*.break_ctl = klsi_105_break_ctl,*/
- .tiocmget = klsi_105_tiocmget,
- .tiocmset = klsi_105_tiocmset,
- .attach = klsi_105_startup,
- .shutdown = klsi_105_shutdown,
- .throttle = klsi_105_throttle,
- .unthrottle = klsi_105_unthrottle,
+ .description = "KL5KUSB105D / PalmConnect",
+ .usb_driver = &kl5kusb105d_driver,
+ .id_table = id_table,
+ .num_ports = 1,
+ .bulk_out_size = 64,
+ .open = klsi_105_open,
+ .close = klsi_105_close,
+ .set_termios = klsi_105_set_termios,
+ /*.break_ctl = klsi_105_break_ctl,*/
+ .tiocmget = klsi_105_tiocmget,
+ .tiocmset = klsi_105_tiocmset,
+ .attach = klsi_105_startup,
+ .release = klsi_105_release,
+ .throttle = usb_serial_generic_throttle,
+ .unthrottle = usb_serial_generic_unthrottle,
+ .process_read_urb = klsi_105_process_read_urb,
+ .prepare_write_buffer = klsi_105_prepare_write_buffer,
};
struct klsi_105_port_settings {
__u8 unknown2;
} __attribute__ ((packed));
-/* we implement a pool of NUM_URBS urbs per usb_serial */
-#define NUM_URBS 1
-#define URB_TRANSFER_BUFFER_SIZE 64
struct klsi_105_private {
struct klsi_105_port_settings cfg;
- struct termios termios;
+ struct ktermios termios;
unsigned long line_state; /* modem line settings */
- /* write pool */
- struct urb * write_urb_pool[NUM_URBS];
spinlock_t lock;
- unsigned long bytes_in;
- unsigned long bytes_out;
};
{
int rc;
- rc = usb_control_msg(port->serial->dev,
- usb_sndctrlpipe(port->serial->dev, 0),
- KL5KUSB105A_SIO_SET_DATA,
- USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_INTERFACE,
- 0, /* value */
- 0, /* index */
- settings,
- sizeof(struct klsi_105_port_settings),
- KLSI_TIMEOUT);
+ rc = usb_control_msg(port->serial->dev,
+ usb_sndctrlpipe(port->serial->dev, 0),
+ KL5KUSB105A_SIO_SET_DATA,
+ USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_INTERFACE,
+ 0, /* value */
+ 0, /* index */
+ settings,
+ sizeof(struct klsi_105_port_settings),
+ KLSI_TIMEOUT);
if (rc < 0)
- err("Change port settings failed (error = %d)", rc);
- info("%s - %d byte block, baudrate %x, databits %d, u1 %d, u2 %d",
- __FUNCTION__,
- settings->pktlen,
- settings->baudrate, settings->databits,
- settings->unknown1, settings->unknown2);
- return rc;
-} /* klsi_105_chg_port_settings */
+ dev_err(&port->dev,
+ "Change port settings failed (error = %d)\n", rc);
+ dev_info(&port->serial->dev->dev,
+ "%d byte block, baudrate %x, databits %d, u1 %d, u2 %d\n",
+ settings->pktlen, settings->baudrate, settings->databits,
+ settings->unknown1, settings->unknown2);
+ return rc;
+}
/* translate a 16-bit status value from the device to linux's TIO bits */
static unsigned long klsi_105_status2linestate(const __u16 status)
return res;
}
-/*
+
+/*
* Read line control via vendor command and return result through
- * *line_state_p
+ * *line_state_p
*/
/* It seems that the status buffer has always only 2 bytes length */
#define KLSI_STATUSBUF_LEN 2
unsigned long *line_state_p)
{
int rc;
- __u8 status_buf[KLSI_STATUSBUF_LEN] = { -1,-1};
+ u8 *status_buf;
__u16 status;
- info("%s - sending SIO Poll request", __FUNCTION__);
- rc = usb_control_msg(port->serial->dev,
+ dev_info(&port->serial->dev->dev, "sending SIO Poll request\n");
+
+ status_buf = kmalloc(KLSI_STATUSBUF_LEN, GFP_KERNEL);
+ if (!status_buf) {
+ dev_err(&port->dev, "%s - out of memory for status buffer.\n",
+ __func__);
+ return -ENOMEM;
+ }
+ status_buf[0] = 0xff;
+ status_buf[1] = 0xff;
+ rc = usb_control_msg(port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0),
KL5KUSB105A_SIO_POLL,
- USB_TYPE_VENDOR | USB_DIR_IN,
+ USB_TYPE_VENDOR | USB_DIR_IN,
0, /* value */
0, /* index */
status_buf, KLSI_STATUSBUF_LEN,
10000
);
if (rc < 0)
- err("Reading line status failed (error = %d)", rc);
+ dev_err(&port->dev, "Reading line status failed (error = %d)\n",
+ rc);
else {
- status = status_buf[0] + (status_buf[1]<<8);
+ status = get_unaligned_le16(status_buf);
- info("%s - read status %x %x", __FUNCTION__,
- status_buf[0], status_buf[1]);
+ dev_info(&port->serial->dev->dev, "read status %x %x",
+ status_buf[0], status_buf[1]);
*line_state_p = klsi_105_status2linestate(status);
}
- return rc;
+ kfree(status_buf);
+ return rc;
}
* Driver's tty interface functions
*/
-static int klsi_105_startup (struct usb_serial *serial)
+static int klsi_105_startup(struct usb_serial *serial)
{
struct klsi_105_private *priv;
int i;
*/
/* allocate the private data structure */
- for (i=0; i<serial->num_ports; i++) {
- int j;
+ for (i = 0; i < serial->num_ports; i++) {
priv = kmalloc(sizeof(struct klsi_105_private),
GFP_KERNEL);
if (!priv) {
- dbg("%skmalloc for klsi_105_private failed.", __FUNCTION__);
- return -ENOMEM;
+ dbg("%skmalloc for klsi_105_private failed.", __func__);
+ i--;
+ goto err_cleanup;
}
/* set initial values for control structures */
priv->cfg.pktlen = 5;
priv->line_state = 0;
- priv->bytes_in = 0;
- priv->bytes_out = 0;
usb_set_serial_port_data(serial->port[i], priv);
- spin_lock_init (&priv->lock);
- for (j=0; j<NUM_URBS; j++) {
- struct urb* urb = usb_alloc_urb(0, GFP_KERNEL);
-
- priv->write_urb_pool[j] = urb;
- if (urb == NULL) {
- err("No more urbs???");
- continue;
- }
-
- urb->transfer_buffer = NULL;
- urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE,
- GFP_KERNEL);
- if (!urb->transfer_buffer) {
- err("%s - out of memory for urb buffers.", __FUNCTION__);
- continue;
- }
- }
+ spin_lock_init(&priv->lock);
/* priv->termios is left uninitalized until port opening */
init_waitqueue_head(&serial->port[i]->write_wait);
}
-
- return (0);
-} /* klsi_105_startup */
+ return 0;
+
+err_cleanup:
+ for (; i >= 0; i--) {
+ priv = usb_get_serial_port_data(serial->port[i]);
+ kfree(priv);
+ usb_set_serial_port_data(serial->port[i], NULL);
+ }
+ return -ENOMEM;
+}
-static void klsi_105_shutdown (struct usb_serial *serial)
+static void klsi_105_release(struct usb_serial *serial)
{
int i;
-
- dbg("%s", __FUNCTION__);
-
- /* stop reads and writes on all ports */
- for (i=0; i < serial->num_ports; ++i) {
- struct klsi_105_private *priv = usb_get_serial_port_data(serial->port[i]);
- unsigned long flags;
-
- if (priv) {
- /* kill our write urb pool */
- int j;
- struct urb **write_urbs = priv->write_urb_pool;
- spin_lock_irqsave(&priv->lock,flags);
-
- for (j = 0; j < NUM_URBS; j++) {
- if (write_urbs[j]) {
- /* FIXME - uncomment the following
- * usb_kill_urb call when the host
- * controllers get fixed to set
- * urb->dev = NULL after the urb is
- * finished. Otherwise this call
- * oopses. */
- /* usb_kill_urb(write_urbs[j]); */
- kfree(write_urbs[j]->transfer_buffer);
- usb_free_urb (write_urbs[j]);
- }
- }
-
- spin_unlock_irqrestore (&priv->lock, flags);
-
- kfree(priv);
- usb_set_serial_port_data(serial->port[i], NULL);
- }
- }
-} /* klsi_105_shutdown */
-static int klsi_105_open (struct usb_serial_port *port, struct file *filp)
+ dbg("%s", __func__);
+
+ for (i = 0; i < serial->num_ports; ++i)
+ kfree(usb_get_serial_port_data(serial->port[i]));
+}
+
+static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct klsi_105_private *priv = usb_get_serial_port_data(port);
int retval = 0;
int rc;
int i;
unsigned long line_state;
- struct klsi_105_port_settings cfg;
+ struct klsi_105_port_settings *cfg;
unsigned long flags;
- dbg("%s port %d", __FUNCTION__, port->number);
-
- /* force low_latency on so that our tty_push actually forces
- * the data through
- * port->tty->low_latency = 1; */
+ dbg("%s port %d", __func__, port->number);
/* Do a defined restart:
* Set up sane default baud rate and send the 'READ_ON'
- * vendor command.
+ * vendor command.
* FIXME: set modem line control (how?)
* Then read the modem line control and store values in
* priv->line_state.
*/
- cfg.pktlen = 5;
- cfg.baudrate = kl5kusb105a_sio_b9600;
- cfg.databits = kl5kusb105a_dtb_8;
- cfg.unknown1 = 0;
- cfg.unknown2 = 1;
- klsi_105_chg_port_settings(port, &cfg);
-
+ cfg = kmalloc(sizeof(*cfg), GFP_KERNEL);
+ if (!cfg) {
+ dev_err(&port->dev, "%s - out of memory for config buffer.\n",
+ __func__);
+ return -ENOMEM;
+ }
+ cfg->pktlen = 5;
+ cfg->baudrate = kl5kusb105a_sio_b9600;
+ cfg->databits = kl5kusb105a_dtb_8;
+ cfg->unknown1 = 0;
+ cfg->unknown2 = 1;
+ klsi_105_chg_port_settings(port, cfg);
+
/* set up termios structure */
- spin_lock_irqsave (&priv->lock, flags);
- priv->termios.c_iflag = port->tty->termios->c_iflag;
- priv->termios.c_oflag = port->tty->termios->c_oflag;
- priv->termios.c_cflag = port->tty->termios->c_cflag;
- priv->termios.c_lflag = port->tty->termios->c_lflag;
- for (i=0; i<NCCS; i++)
- priv->termios.c_cc[i] = port->tty->termios->c_cc[i];
- priv->cfg.pktlen = cfg.pktlen;
- priv->cfg.baudrate = cfg.baudrate;
- priv->cfg.databits = cfg.databits;
- priv->cfg.unknown1 = cfg.unknown1;
- priv->cfg.unknown2 = cfg.unknown2;
- spin_unlock_irqrestore (&priv->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
+ priv->termios.c_iflag = tty->termios->c_iflag;
+ priv->termios.c_oflag = tty->termios->c_oflag;
+ priv->termios.c_cflag = tty->termios->c_cflag;
+ priv->termios.c_lflag = tty->termios->c_lflag;
+ for (i = 0; i < NCCS; i++)
+ priv->termios.c_cc[i] = tty->termios->c_cc[i];
+ priv->cfg.pktlen = cfg->pktlen;
+ priv->cfg.baudrate = cfg->baudrate;
+ priv->cfg.databits = cfg->databits;
+ priv->cfg.unknown1 = cfg->unknown1;
+ priv->cfg.unknown2 = cfg->unknown2;
+ spin_unlock_irqrestore(&priv->lock, flags);
/* READ_ON and urb submission */
- usb_fill_bulk_urb(port->read_urb, port->serial->dev,
- usb_rcvbulkpipe(port->serial->dev,
- port->bulk_in_endpointAddress),
- port->read_urb->transfer_buffer,
- port->read_urb->transfer_buffer_length,
- klsi_105_read_bulk_callback,
- port);
-
- rc = usb_submit_urb(port->read_urb, GFP_KERNEL);
+ rc = usb_serial_generic_open(tty, port);
if (rc) {
- err("%s - failed submitting read urb, error %d", __FUNCTION__, rc);
retval = rc;
goto exit;
}
rc = usb_control_msg(port->serial->dev,
- usb_sndctrlpipe(port->serial->dev,0),
+ usb_sndctrlpipe(port->serial->dev, 0),
KL5KUSB105A_SIO_CONFIGURE,
USB_TYPE_VENDOR|USB_DIR_OUT|USB_RECIP_INTERFACE,
KL5KUSB105A_SIO_CONFIGURE_READ_ON,
0,
KLSI_TIMEOUT);
if (rc < 0) {
- err("Enabling read failed (error = %d)", rc);
+ dev_err(&port->dev, "Enabling read failed (error = %d)\n", rc);
retval = rc;
- } else
- dbg("%s - enabled reading", __FUNCTION__);
+ } else
+ dbg("%s - enabled reading", __func__);
rc = klsi_105_get_line_state(port, &line_state);
if (rc >= 0) {
- spin_lock_irqsave (&priv->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
priv->line_state = line_state;
- spin_unlock_irqrestore (&priv->lock, flags);
- dbg("%s - read line state 0x%lx", __FUNCTION__, line_state);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ dbg("%s - read line state 0x%lx", __func__, line_state);
retval = 0;
} else
retval = rc;
exit:
+ kfree(cfg);
return retval;
-} /* klsi_105_open */
-
+}
-static void klsi_105_close (struct usb_serial_port *port, struct file *filp)
+static void klsi_105_close(struct usb_serial_port *port)
{
- struct klsi_105_private *priv = usb_get_serial_port_data(port);
int rc;
- dbg("%s port %d", __FUNCTION__, port->number);
-
- /* send READ_OFF */
- rc = usb_control_msg (port->serial->dev,
- usb_sndctrlpipe(port->serial->dev, 0),
- KL5KUSB105A_SIO_CONFIGURE,
- USB_TYPE_VENDOR | USB_DIR_OUT,
- KL5KUSB105A_SIO_CONFIGURE_READ_OFF,
- 0, /* index */
- NULL, 0,
- KLSI_TIMEOUT);
- if (rc < 0)
- err("Disabling read failed (error = %d)", rc);
+ dbg("%s port %d", __func__, port->number);
+
+ mutex_lock(&port->serial->disc_mutex);
+ if (!port->serial->disconnected) {
+ /* send READ_OFF */
+ rc = usb_control_msg(port->serial->dev,
+ usb_sndctrlpipe(port->serial->dev, 0),
+ KL5KUSB105A_SIO_CONFIGURE,
+ USB_TYPE_VENDOR | USB_DIR_OUT,
+ KL5KUSB105A_SIO_CONFIGURE_READ_OFF,
+ 0, /* index */
+ NULL, 0,
+ KLSI_TIMEOUT);
+ if (rc < 0)
+ dev_err(&port->dev,
+ "Disabling read failed (error = %d)\n", rc);
+ }
+ mutex_unlock(&port->serial->disc_mutex);
/* shutdown our bulk reads and writes */
- usb_kill_urb(port->write_urb);
- usb_kill_urb(port->read_urb);
- /* unlink our write pool */
- /* FIXME */
+ usb_serial_generic_close(port);
+
/* wgg - do I need this? I think so. */
usb_kill_urb(port->interrupt_in_urb);
- info("kl5kusb105 port stats: %ld bytes in, %ld bytes out", priv->bytes_in, priv->bytes_out);
-} /* klsi_105_close */
-
+}
/* We need to write a complete 64-byte data block and encode the
- * number actually sent in the first double-byte, LSB-order. That
+ * number actually sent in the first double-byte, LSB-order. That
* leaves at most 62 bytes of payload.
*/
-#define KLSI_105_DATA_OFFSET 2 /* in the bulk urb data block */
-
-
-static int klsi_105_write (struct usb_serial_port *port,
- const unsigned char *buf, int count)
+#define KLSI_HDR_LEN 2
+static int klsi_105_prepare_write_buffer(struct usb_serial_port *port,
+ void *dest, size_t size)
{
- struct klsi_105_private *priv = usb_get_serial_port_data(port);
- int result, size;
- int bytes_sent=0;
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- while (count > 0) {
- /* try to find a free urb (write 0 bytes if none) */
- struct urb *urb = NULL;
- unsigned long flags;
- int i;
- /* since the pool is per-port we might not need the spin lock !? */
- spin_lock_irqsave (&priv->lock, flags);
- for (i=0; i<NUM_URBS; i++) {
- if (priv->write_urb_pool[i]->status != -EINPROGRESS) {
- urb = priv->write_urb_pool[i];
- dbg("%s - using pool URB %d", __FUNCTION__, i);
- break;
- }
- }
- spin_unlock_irqrestore (&priv->lock, flags);
-
- if (urb==NULL) {
- dbg("%s - no more free urbs", __FUNCTION__);
- goto exit;
- }
-
- if (urb->transfer_buffer == NULL) {
- urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC);
- if (urb->transfer_buffer == NULL) {
- err("%s - no more kernel memory...", __FUNCTION__);
- goto exit;
- }
- }
+ unsigned char *buf = dest;
+ int count;
- size = min (count, port->bulk_out_size - KLSI_105_DATA_OFFSET);
- size = min (size, URB_TRANSFER_BUFFER_SIZE - KLSI_105_DATA_OFFSET);
-
- memcpy (urb->transfer_buffer + KLSI_105_DATA_OFFSET, buf, size);
-
- /* write payload size into transfer buffer */
- ((__u8 *)urb->transfer_buffer)[0] = (__u8) (size & 0xFF);
- ((__u8 *)urb->transfer_buffer)[1] = (__u8) ((size & 0xFF00)>>8);
-
- /* set up our urb */
- usb_fill_bulk_urb(urb, port->serial->dev,
- usb_sndbulkpipe(port->serial->dev,
- port->bulk_out_endpointAddress),
- urb->transfer_buffer,
- URB_TRANSFER_BUFFER_SIZE,
- klsi_105_write_bulk_callback,
- port);
-
- /* send the data out the bulk port */
- result = usb_submit_urb(urb, GFP_ATOMIC);
- if (result) {
- err("%s - failed submitting write urb, error %d", __FUNCTION__, result);
- goto exit;
- }
- buf += size;
- bytes_sent += size;
- count -= size;
- }
-exit:
- /* lockless, but it's for debug info only... */
- priv->bytes_out+=bytes_sent;
+ count = kfifo_out_locked(&port->write_fifo, buf + KLSI_HDR_LEN, size,
+ &port->lock);
+ put_unaligned_le16(count, buf);
- return bytes_sent; /* that's how much we wrote */
-} /* klsi_105_write */
+ return count + KLSI_HDR_LEN;
+}
-static void klsi_105_write_bulk_callback ( struct urb *urb, struct pt_regs *regs)
+/* The data received is preceded by a length double-byte in LSB-first order.
+ */
+static void klsi_105_process_read_urb(struct urb *urb)
{
- struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+ struct usb_serial_port *port = urb->context;
+ unsigned char *data = urb->transfer_buffer;
+ struct tty_struct *tty;
+ unsigned len;
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- if (urb->status) {
- dbg("%s - nonzero write bulk status received: %d", __FUNCTION__,
- urb->status);
+ /* empty urbs seem to happen, we ignore them */
+ if (!urb->actual_length)
return;
- }
-
- usb_serial_port_softint(port);
-} /* klsi_105_write_bulk_completion_callback */
-
-/* return number of characters currently in the writing process */
-static int klsi_105_chars_in_buffer (struct usb_serial_port *port)
-{
- int chars = 0;
- int i;
- unsigned long flags;
- struct klsi_105_private *priv = usb_get_serial_port_data(port);
-
- spin_lock_irqsave (&priv->lock, flags);
-
- for (i = 0; i < NUM_URBS; ++i) {
- if (priv->write_urb_pool[i]->status == -EINPROGRESS) {
- chars += URB_TRANSFER_BUFFER_SIZE;
- }
+ if (urb->actual_length <= KLSI_HDR_LEN) {
+ dbg("%s - malformed packet", __func__);
+ return;
}
- spin_unlock_irqrestore (&priv->lock, flags);
-
- dbg("%s - returns %d", __FUNCTION__, chars);
- return (chars);
-}
-
-static int klsi_105_write_room (struct usb_serial_port *port)
-{
- unsigned long flags;
- int i;
- int room = 0;
- struct klsi_105_private *priv = usb_get_serial_port_data(port);
+ tty = tty_port_tty_get(&port->port);
+ if (!tty)
+ return;
- spin_lock_irqsave (&priv->lock, flags);
- for (i = 0; i < NUM_URBS; ++i) {
- if (priv->write_urb_pool[i]->status != -EINPROGRESS) {
- room += URB_TRANSFER_BUFFER_SIZE;
- }
+ len = get_unaligned_le16(data);
+ if (len > urb->actual_length - KLSI_HDR_LEN) {
+ dbg("%s - packet length mismatch", __func__);
+ len = urb->actual_length - KLSI_HDR_LEN;
}
- spin_unlock_irqrestore (&priv->lock, flags);
-
- dbg("%s - returns %d", __FUNCTION__, room);
- return (room);
+ tty_insert_flip_string(tty, data + KLSI_HDR_LEN, len);
+ tty_flip_buffer_push(tty);
+ tty_kref_put(tty);
}
-
-
-static void klsi_105_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
-{
- struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
- struct klsi_105_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
- unsigned char *data = urb->transfer_buffer;
- int rc;
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- /* The urb might have been killed. */
- if (urb->status) {
- dbg("%s - nonzero read bulk status received: %d", __FUNCTION__,
- urb->status);
- return;
- }
-
- /* The data received is again preceded by a length double-byte in LSB-
- * first order (see klsi_105_write() )
- */
- if (urb->actual_length == 0) {
- /* empty urbs seem to happen, we ignore them */
- /* dbg("%s - emtpy URB", __FUNCTION__); */
- ;
- } else if (urb->actual_length <= 2) {
- dbg("%s - size %d URB not understood", __FUNCTION__,
- urb->actual_length);
- usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
- urb->actual_length, data);
- } else {
- int bytes_sent = ((__u8 *) data)[0] +
- ((unsigned int) ((__u8 *) data)[1] << 8);
- tty = port->tty;
- /* we should immediately resubmit the URB, before attempting
- * to pass the data on to the tty layer. But that needs locking
- * against re-entry an then mixed-up data because of
- * intermixed tty_flip_buffer_push()s
- * FIXME
- */
- usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
- urb->actual_length, data);
-
- if (bytes_sent + 2 > urb->actual_length) {
- dbg("%s - trying to read more data than available"
- " (%d vs. %d)", __FUNCTION__,
- bytes_sent+2, urb->actual_length);
- /* cap at implied limit */
- bytes_sent = urb->actual_length - 2;
- }
-
- tty_buffer_request_room(tty, bytes_sent);
- tty_insert_flip_string(tty, data + 2, bytes_sent);
- tty_flip_buffer_push(tty);
-
- /* again lockless, but debug info only */
- priv->bytes_in += bytes_sent;
- }
- /* Continue trying to always read */
- usb_fill_bulk_urb(port->read_urb, port->serial->dev,
- usb_rcvbulkpipe(port->serial->dev,
- port->bulk_in_endpointAddress),
- port->read_urb->transfer_buffer,
- port->read_urb->transfer_buffer_length,
- klsi_105_read_bulk_callback,
- port);
- rc = usb_submit_urb(port->read_urb, GFP_ATOMIC);
- if (rc)
- err("%s - failed resubmitting read urb, error %d", __FUNCTION__, rc);
-} /* klsi_105_read_bulk_callback */
-
-
-static void klsi_105_set_termios (struct usb_serial_port *port,
- struct termios *old_termios)
+static void klsi_105_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port,
+ struct ktermios *old_termios)
{
struct klsi_105_private *priv = usb_get_serial_port_data(port);
- unsigned int iflag = port->tty->termios->c_iflag;
+ unsigned int iflag = tty->termios->c_iflag;
unsigned int old_iflag = old_termios->c_iflag;
- unsigned int cflag = port->tty->termios->c_cflag;
+ unsigned int cflag = tty->termios->c_cflag;
unsigned int old_cflag = old_termios->c_cflag;
- struct klsi_105_port_settings cfg;
+ struct klsi_105_port_settings *cfg;
unsigned long flags;
-
+ speed_t baud;
+
+ cfg = kmalloc(sizeof(*cfg), GFP_KERNEL);
+ if (!cfg) {
+ dev_err(&port->dev, "%s - out of memory for config buffer.\n",
+ __func__);
+ return;
+ }
+
/* lock while we are modifying the settings */
- spin_lock_irqsave (&priv->lock, flags);
-
+ spin_lock_irqsave(&priv->lock, flags);
+
/*
* Update baud rate
*/
- if( (cflag & CBAUD) != (old_cflag & CBAUD) ) {
- /* reassert DTR and (maybe) RTS on transition from B0 */
- if( (old_cflag & CBAUD) == B0 ) {
- dbg("%s: baud was B0", __FUNCTION__);
+ baud = tty_get_baud_rate(tty);
+
+ if ((cflag & CBAUD) != (old_cflag & CBAUD)) {
+ /* reassert DTR and (maybe) RTS on transition from B0 */
+ if ((old_cflag & CBAUD) == B0) {
+ dbg("%s: baud was B0", __func__);
#if 0
priv->control_state |= TIOCM_DTR;
/* don't set RTS if using hardware flow control */
- if (!(old_cflag & CRTSCTS)) {
+ if (!(old_cflag & CRTSCTS))
priv->control_state |= TIOCM_RTS;
- }
mct_u232_set_modem_ctrl(serial, priv->control_state);
#endif
}
-
- switch(cflag & CBAUD) {
- case B0: /* handled below */
- break;
- case B1200: priv->cfg.baudrate = kl5kusb105a_sio_b1200;
- break;
- case B2400: priv->cfg.baudrate = kl5kusb105a_sio_b2400;
- break;
- case B4800: priv->cfg.baudrate = kl5kusb105a_sio_b4800;
- break;
- case B9600: priv->cfg.baudrate = kl5kusb105a_sio_b9600;
- break;
- case B19200: priv->cfg.baudrate = kl5kusb105a_sio_b19200;
- break;
- case B38400: priv->cfg.baudrate = kl5kusb105a_sio_b38400;
- break;
- case B57600: priv->cfg.baudrate = kl5kusb105a_sio_b57600;
- break;
- case B115200: priv->cfg.baudrate = kl5kusb105a_sio_b115200;
- break;
- default:
- err("KLSI USB->Serial converter:"
- " unsupported baudrate request, using default"
- " of 9600");
+ }
+ switch (baud) {
+ case 0: /* handled below */
+ break;
+ case 1200:
+ priv->cfg.baudrate = kl5kusb105a_sio_b1200;
+ break;
+ case 2400:
+ priv->cfg.baudrate = kl5kusb105a_sio_b2400;
+ break;
+ case 4800:
+ priv->cfg.baudrate = kl5kusb105a_sio_b4800;
+ break;
+ case 9600:
+ priv->cfg.baudrate = kl5kusb105a_sio_b9600;
+ break;
+ case 19200:
+ priv->cfg.baudrate = kl5kusb105a_sio_b19200;
+ break;
+ case 38400:
+ priv->cfg.baudrate = kl5kusb105a_sio_b38400;
+ break;
+ case 57600:
+ priv->cfg.baudrate = kl5kusb105a_sio_b57600;
+ break;
+ case 115200:
+ priv->cfg.baudrate = kl5kusb105a_sio_b115200;
+ break;
+ default:
+ dbg("KLSI USB->Serial converter:"
+ " unsupported baudrate request, using default of 9600");
priv->cfg.baudrate = kl5kusb105a_sio_b9600;
- break;
- }
- if ((cflag & CBAUD) == B0 ) {
- dbg("%s: baud is B0", __FUNCTION__);
- /* Drop RTS and DTR */
- /* maybe this should be simulated by sending read
- * disable and read enable messages?
- */
- ;
+ baud = 9600;
+ break;
+ }
+ if ((cflag & CBAUD) == B0) {
+ dbg("%s: baud is B0", __func__);
+ /* Drop RTS and DTR */
+ /* maybe this should be simulated by sending read
+ * disable and read enable messages?
+ */
+ ;
#if 0
- priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
- mct_u232_set_modem_ctrl(serial, priv->control_state);
+ priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
+ mct_u232_set_modem_ctrl(serial, priv->control_state);
#endif
- }
}
+ tty_encode_baud_rate(tty, baud, baud);
if ((cflag & CSIZE) != (old_cflag & CSIZE)) {
/* set the number of data bits */
switch (cflag & CSIZE) {
case CS5:
- dbg("%s - 5 bits/byte not supported", __FUNCTION__);
- spin_unlock_irqrestore (&priv->lock, flags);
- return ;
+ dbg("%s - 5 bits/byte not supported", __func__);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ goto err;
case CS6:
- dbg("%s - 6 bits/byte not supported", __FUNCTION__);
- spin_unlock_irqrestore (&priv->lock, flags);
- return ;
+ dbg("%s - 6 bits/byte not supported", __func__);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ goto err;
case CS7:
priv->cfg.databits = kl5kusb105a_dtb_7;
break;
priv->cfg.databits = kl5kusb105a_dtb_8;
break;
default:
- err("CSIZE was not CS5-CS8, using default of 8");
+ dev_err(&port->dev,
+ "CSIZE was not CS5-CS8, using default of 8\n");
priv->cfg.databits = kl5kusb105a_dtb_8;
break;
}
* Update line control register (LCR)
*/
if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))
- || (cflag & CSTOPB) != (old_cflag & CSTOPB) ) {
-
+ || (cflag & CSTOPB) != (old_cflag & CSTOPB)) {
+ /* Not currently supported */
+ tty->termios->c_cflag &= ~(PARENB|PARODD|CSTOPB);
#if 0
priv->last_lcr = 0;
#endif
;
}
-
/*
* Set flow control: well, I do not really now how to handle DTR/RTS.
* Just do what we have seen with SniffUSB on Win98.
*/
- if( (iflag & IXOFF) != (old_iflag & IXOFF)
+ if ((iflag & IXOFF) != (old_iflag & IXOFF)
|| (iflag & IXON) != (old_iflag & IXON)
- || (cflag & CRTSCTS) != (old_cflag & CRTSCTS) ) {
-
+ || (cflag & CRTSCTS) != (old_cflag & CRTSCTS)) {
+ /* Not currently supported */
+ tty->termios->c_cflag &= ~CRTSCTS;
/* Drop DTR/RTS if no flow control otherwise assert */
#if 0
- if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS) )
+ if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS))
priv->control_state |= TIOCM_DTR | TIOCM_RTS;
else
priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
#endif
;
}
- memcpy (&cfg, &priv->cfg, sizeof(cfg));
- spin_unlock_irqrestore (&priv->lock, flags);
-
- /* now commit changes to device */
- klsi_105_chg_port_settings(port, &cfg);
-} /* klsi_105_set_termios */
+ memcpy(cfg, &priv->cfg, sizeof(*cfg));
+ spin_unlock_irqrestore(&priv->lock, flags);
+ /* now commit changes to device */
+ klsi_105_chg_port_settings(port, cfg);
+err:
+ kfree(cfg);
+}
#if 0
-static void mct_u232_break_ctl( struct usb_serial_port *port, int break_state )
+static void mct_u232_break_ctl(struct tty_struct *tty, int break_state)
{
+ struct usb_serial_port *port = tty->driver_data;
struct usb_serial *serial = port->serial;
- struct mct_u232_private *priv = (struct mct_u232_private *)port->private;
+ struct mct_u232_private *priv =
+ (struct mct_u232_private *)port->private;
unsigned char lcr = priv->last_lcr;
- dbg("%sstate=%d", __FUNCTION__, break_state);
+ dbg("%sstate=%d", __func__, break_state);
+ /* LOCKING */
if (break_state)
lcr |= MCT_U232_SET_BREAK;
mct_u232_set_line_ctrl(serial, lcr);
-} /* mct_u232_break_ctl */
+}
#endif
-static int klsi_105_tiocmget (struct usb_serial_port *port, struct file *file)
+static int klsi_105_tiocmget(struct tty_struct *tty, struct file *file)
{
+ struct usb_serial_port *port = tty->driver_data;
struct klsi_105_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
int rc;
unsigned long line_state;
- dbg("%s - request, just guessing", __FUNCTION__);
+ dbg("%s - request, just guessing", __func__);
rc = klsi_105_get_line_state(port, &line_state);
if (rc < 0) {
- err("Reading line control failed (error = %d)", rc);
+ dev_err(&port->dev,
+ "Reading line control failed (error = %d)\n", rc);
/* better return value? EAGAIN? */
return rc;
}
- spin_lock_irqsave (&priv->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
priv->line_state = line_state;
- spin_unlock_irqrestore (&priv->lock, flags);
- dbg("%s - read line state 0x%lx", __FUNCTION__, line_state);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ dbg("%s - read line state 0x%lx", __func__, line_state);
return (int)line_state;
}
-static int klsi_105_tiocmset (struct usb_serial_port *port, struct file *file,
- unsigned int set, unsigned int clear)
+static int klsi_105_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear)
{
int retval = -EINVAL;
-
- dbg("%s", __FUNCTION__);
+
+ dbg("%s", __func__);
/* if this ever gets implemented, it should be done something like this:
struct usb_serial *serial = port->serial;
*/
return retval;
}
-
-static int klsi_105_ioctl (struct usb_serial_port *port, struct file * file,
- unsigned int cmd, unsigned long arg)
-{
- struct klsi_105_private *priv = usb_get_serial_port_data(port);
- void __user *user_arg = (void __user *)arg;
-
- dbg("%scmd=0x%x", __FUNCTION__, cmd);
-
- /* Based on code from acm.c and others */
- switch (cmd) {
- case TIOCMIWAIT:
- /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
- /* TODO */
- dbg("%s - TIOCMIWAIT not handled", __FUNCTION__);
- return -ENOIOCTLCMD;
- case TIOCGICOUNT:
- /* return count of modemline transitions */
- /* TODO */
- dbg("%s - TIOCGICOUNT not handled", __FUNCTION__);
- return -ENOIOCTLCMD;
- case TCGETS:
- /* return current info to caller */
- dbg("%s - TCGETS data faked/incomplete", __FUNCTION__);
-
- if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios)))
- return -EFAULT;
-
- if (kernel_termios_to_user_termios((struct termios __user *)arg,
- &priv->termios))
- return -EFAULT;
- return 0;
- case TCSETS:
- /* set port termios to the one given by the user */
- dbg("%s - TCSETS not handled", __FUNCTION__);
-
- if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios)))
- return -EFAULT;
-
- if (user_termios_to_kernel_termios(&priv->termios,
- (struct termios __user *)arg))
- return -EFAULT;
- klsi_105_set_termios(port, &priv->termios);
- return 0;
- case TCSETSW: {
- /* set port termios and try to wait for completion of last
- * write operation */
- /* We guess here. If there are not too many write urbs
- * outstanding, we lie. */
- /* what is the right way to wait here? schedule() ? */
- /*
- while (klsi_105_chars_in_buffer(port) > (NUM_URBS / 4 ) * URB_TRANSFER_BUFFER_SIZE)
- schedule();
- */
- return -ENOIOCTLCMD;
- }
- default:
- dbg("%s: arg not supported - 0x%04x", __FUNCTION__,cmd);
- return(-ENOIOCTLCMD);
- break;
- }
- return 0;
-} /* klsi_105_ioctl */
-static void klsi_105_throttle (struct usb_serial_port *port)
-{
- dbg("%s - port %d", __FUNCTION__, port->number);
- usb_kill_urb(port->read_urb);
-}
-static void klsi_105_unthrottle (struct usb_serial_port *port)
-{
- int result;
-
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- port->read_urb->dev = port->serial->dev;
- result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
- if (result)
- err("%s - failed submitting read urb, error %d", __FUNCTION__,
- result);
-}
-
-
-
-static int __init klsi_105_init (void)
+static int __init klsi_105_init(void)
{
int retval;
retval = usb_serial_register(&kl5kusb105d_device);
if (retval)
goto failed_usb_register;
- info(DRIVER_DESC " " DRIVER_VERSION);
+ printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
+ DRIVER_DESC "\n");
return 0;
failed_usb_register:
usb_serial_deregister(&kl5kusb105d_device);
return retval;
}
-
-static void __exit klsi_105_exit (void)
+static void __exit klsi_105_exit(void)
{
- usb_deregister (&kl5kusb105d_driver);
- usb_serial_deregister (&kl5kusb105d_device);
+ usb_deregister(&kl5kusb105d_driver);
+ usb_serial_deregister(&kl5kusb105d_device);
}
-module_init (klsi_105_init);
-module_exit (klsi_105_exit);
+module_init(klsi_105_init);
+module_exit(klsi_105_exit);
-MODULE_AUTHOR( DRIVER_AUTHOR );
-MODULE_DESCRIPTION( DRIVER_DESC );
-MODULE_LICENSE("GPL");
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "enable extensive debugging messages");
-
-/* vim: set sts=8 ts=8 sw=8: */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff