diff options
Diffstat (limited to 'drivers/usb/serial/whiteheat.c')
| -rw-r--r-- | drivers/usb/serial/whiteheat.c | 514 |
1 files changed, 298 insertions, 216 deletions
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index 665aa77a917..5335d3211c0 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -12,29 +12,31 @@ * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * - * See Documentation/usb/usb-serial.txt for more information on using this driver + * See Documentation/usb/usb-serial.txt for more information on using this + * driver * * (10/09/2002) Stuart MacDonald (stuartm@connecttech.com) * Upgrade to full working driver * * (05/30/2001) gkh - * switched from using spinlock to a semaphore, which fixes lots of problems. + * switched from using spinlock to a semaphore, which fixes lots of + * problems. * * (04/08/2001) gb * Identify version on module load. - * + * * 2001_Mar_19 gkh - * Fixed MOD_INC and MOD_DEC logic, the ability to open a port more + * Fixed MOD_INC and MOD_DEC logic, the ability to open a port more * than once, and the got the proper usb_device_id table entries so * the driver works again. * * (11/01/2000) Adam J. Richter * usb_device_id table support - * + * * (10/05/2000) gkh * Fixed bug with urb->dev not being set properly, now that the usb * core needs it. - * + * * (10/03/2000) smd * firmware is improved to guard against crap sent to device * firmware now replies CMD_FAILURE on bad things @@ -52,9 +54,9 @@ * Fixed bug with port->minor that was found by Al Borchers * * (07/04/2000) gkh - * Added support for port settings. Baud rate can now be changed. Line signals - * are not transferred to and from the tty layer yet, but things seem to be - * working well now. + * Added support for port settings. Baud rate can now be changed. Line + * signals are not transferred to and from the tty layer yet, but things + * seem to be working well now. * * (05/04/2000) gkh * First cut at open and close commands. Data can flow through the ports at @@ -62,7 +64,7 @@ * * (03/26/2000) gkh * Split driver up into device specific pieces. - * + * */ #include <linux/kernel.h> @@ -75,7 +77,7 @@ #include <linux/module.h> #include <linux/spinlock.h> #include <linux/mutex.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/termbits.h> #include <linux/usb.h> #include <linux/serial_reg.h> @@ -125,7 +127,7 @@ static struct usb_device_id id_table_combined [] = { { } /* Terminating entry */ }; -MODULE_DEVICE_TABLE (usb, id_table_combined); +MODULE_DEVICE_TABLE(usb, id_table_combined); static struct usb_driver whiteheat_driver = { .name = "whiteheat", @@ -136,26 +138,34 @@ static struct usb_driver whiteheat_driver = { }; /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */ -static int whiteheat_firmware_download (struct usb_serial *serial, const struct usb_device_id *id); -static int whiteheat_firmware_attach (struct usb_serial *serial); +static int whiteheat_firmware_download(struct usb_serial *serial, + const struct usb_device_id *id); +static int whiteheat_firmware_attach(struct usb_serial *serial); /* function prototypes for the Connect Tech WhiteHEAT serial converter */ -static int whiteheat_attach (struct usb_serial *serial); -static void whiteheat_shutdown (struct usb_serial *serial); -static int whiteheat_open (struct usb_serial_port *port, struct file *filp); -static void whiteheat_close (struct usb_serial_port *port, struct file *filp); -static int whiteheat_write (struct usb_serial_port *port, const unsigned char *buf, int count); -static int whiteheat_write_room (struct usb_serial_port *port); -static int whiteheat_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); -static void whiteheat_set_termios (struct usb_serial_port *port, struct ktermios * old); -static int whiteheat_tiocmget (struct usb_serial_port *port, struct file *file); -static int whiteheat_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); -static void whiteheat_break_ctl (struct usb_serial_port *port, int break_state); -static int whiteheat_chars_in_buffer (struct usb_serial_port *port); -static void whiteheat_throttle (struct usb_serial_port *port); -static void whiteheat_unthrottle (struct usb_serial_port *port); -static void whiteheat_read_callback (struct urb *urb); -static void whiteheat_write_callback (struct urb *urb); +static int whiteheat_attach(struct usb_serial *serial); +static void whiteheat_shutdown(struct usb_serial *serial); +static int whiteheat_open(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp); +static void whiteheat_close(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp); +static int whiteheat_write(struct tty_struct *tty, + struct usb_serial_port *port, + const unsigned char *buf, int count); +static int whiteheat_write_room(struct tty_struct *tty); +static int whiteheat_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg); +static void whiteheat_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old); +static int whiteheat_tiocmget(struct tty_struct *tty, struct file *file); +static int whiteheat_tiocmset(struct tty_struct *tty, struct file *file, + unsigned int set, unsigned int clear); +static void whiteheat_break_ctl(struct tty_struct *tty, int break_state); +static int whiteheat_chars_in_buffer(struct tty_struct *tty); +static void whiteheat_throttle(struct tty_struct *tty); +static void whiteheat_unthrottle(struct tty_struct *tty); +static void whiteheat_read_callback(struct urb *urb); +static void whiteheat_write_callback(struct urb *urb); static struct usb_serial_driver whiteheat_fake_device = { .driver = { @@ -202,7 +212,9 @@ struct whiteheat_command_private { struct mutex mutex; __u8 port_running; __u8 command_finished; - wait_queue_head_t wait_command; /* for handling sleeping while waiting for a command to finish */ + wait_queue_head_t wait_command; /* for handling sleeping whilst + waiting for a command to + finish */ __u8 result_buffer[64]; }; @@ -239,14 +251,16 @@ static void command_port_write_callback(struct urb *urb); static void command_port_read_callback(struct urb *urb); static int start_port_read(struct usb_serial_port *port); -static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, struct list_head *head); +static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, + struct list_head *head); static struct list_head *list_first(struct list_head *head); static void rx_data_softint(struct work_struct *work); -static int firm_send_command(struct usb_serial_port *port, __u8 command, __u8 *data, __u8 datasize); +static int firm_send_command(struct usb_serial_port *port, __u8 command, + __u8 *data, __u8 datasize); static int firm_open(struct usb_serial_port *port); static int firm_close(struct usb_serial_port *port); -static int firm_setup_port(struct usb_serial_port *port); +static int firm_setup_port(struct tty_struct *tty); static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); static int firm_set_break(struct usb_serial_port *port, __u8 onoff); @@ -278,7 +292,8 @@ static int firm_report_tx_done(struct usb_serial_port *port); - device renumerated itself and comes up as new device id with all firmware download completed. */ -static int whiteheat_firmware_download (struct usb_serial *serial, const struct usb_device_id *id) +static int whiteheat_firmware_download(struct usb_serial *serial, + const struct usb_device_id *id) { int response, ret = -ENOENT; const struct firmware *loader_fw = NULL, *firmware_fw = NULL; @@ -288,12 +303,15 @@ static int whiteheat_firmware_download (struct usb_serial *serial, const struct if (request_ihex_firmware(&firmware_fw, "whiteheat.fw", &serial->dev->dev)) { - err("%s - request \"whiteheat.fw\" failed", __func__); + dev_err(&serial->dev->dev, + "%s - request \"whiteheat.fw\" failed\n", __func__); goto out; } if (request_ihex_firmware(&loader_fw, "whiteheat_loader.fw", &serial->dev->dev)) { - err("%s - request \"whiteheat_loader.fw\" failed", __func__); + dev_err(&serial->dev->dev, + "%s - request \"whiteheat_loader.fw\" failed\n", + __func__); goto out; } ret = 0; @@ -305,15 +323,16 @@ static int whiteheat_firmware_download (struct usb_serial *serial, const struct (unsigned char *)record->data, be16_to_cpu(record->len), 0xa0); if (response < 0) { - err("%s - ezusb_writememory failed for loader (%d %04X %p %d)", - __func__, response, be32_to_cpu(record->addr), - record->data, be16_to_cpu(record->len)); + dev_err(&serial->dev->dev, "%s - ezusb_writememory " + "failed for loader (%d %04X %p %d)\n", + __func__, response, be32_to_cpu(record->addr), + record->data, be16_to_cpu(record->len)); break; } record = ihex_next_binrec(record); } - response = ezusb_set_reset (serial, 0); + response = ezusb_set_reset(serial, 0); record = (const struct ihex_binrec *)firmware_fw->data; while (record && be32_to_cpu(record->addr) < 0x1b40) @@ -323,15 +342,17 @@ static int whiteheat_firmware_download (struct usb_serial *serial, const struct (unsigned char *)record->data, be16_to_cpu(record->len), 0xa3); if (response < 0) { - err("%s - ezusb_writememory failed for first firmware step (%d %04X %p %d)", - __func__, response, be32_to_cpu(record->addr), - record->data, be16_to_cpu(record->len)); + dev_err(&serial->dev->dev, "%s - ezusb_writememory " + "failed for first firmware step " + "(%d %04X %p %d)\n", __func__, response, + be32_to_cpu(record->addr), record->data, + be16_to_cpu(record->len)); break; } ++record; } - - response = ezusb_set_reset (serial, 1); + + response = ezusb_set_reset(serial, 1); record = (const struct ihex_binrec *)firmware_fw->data; while (record && be32_to_cpu(record->addr) < 0x1b40) { @@ -339,9 +360,11 @@ static int whiteheat_firmware_download (struct usb_serial *serial, const struct (unsigned char *)record->data, be16_to_cpu(record->len), 0xa0); if (response < 0) { - err("%s - ezusb_writememory failed for second firmware step (%d %04X %p %d)", - __func__, response, be32_to_cpu(record->addr), - record->data, be16_to_cpu(record->len)); + dev_err(&serial->dev->dev, "%s - ezusb_writememory " + "failed for second firmware step " + "(%d %04X %p %d)\n", __func__, response, + be32_to_cpu(record->addr), record->data, + be16_to_cpu(record->len)); break; } ++record; @@ -355,7 +378,7 @@ static int whiteheat_firmware_download (struct usb_serial *serial, const struct } -static int whiteheat_firmware_attach (struct usb_serial *serial) +static int whiteheat_firmware_attach(struct usb_serial *serial) { /* We want this device to fail to have a driver assigned to it */ return 1; @@ -365,7 +388,7 @@ static int whiteheat_firmware_attach (struct usb_serial *serial) /***************************************************************************** * Connect Tech's White Heat serial driver functions *****************************************************************************/ -static int whiteheat_attach (struct usb_serial *serial) +static int whiteheat_attach(struct usb_serial *serial) { struct usb_serial_port *command_port; struct whiteheat_command_private *command_info; @@ -386,57 +409,69 @@ static int whiteheat_attach (struct usb_serial *serial) command_port = serial->port[COMMAND_PORT]; - pipe = usb_sndbulkpipe (serial->dev, command_port->bulk_out_endpointAddress); + pipe = usb_sndbulkpipe(serial->dev, + command_port->bulk_out_endpointAddress); command = kmalloc(2, GFP_KERNEL); if (!command) goto no_command_buffer; command[0] = WHITEHEAT_GET_HW_INFO; command[1] = 0; - + result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL); if (!result) goto no_result_buffer; /* * When the module is reloaded the firmware is still there and * the endpoints are still in the usb core unchanged. This is the - * unlinking bug in disguise. Same for the call below. - */ + * unlinking bug in disguise. Same for the call below. + */ usb_clear_halt(serial->dev, pipe); - ret = usb_bulk_msg (serial->dev, pipe, command, 2, &alen, COMMAND_TIMEOUT_MS); + ret = usb_bulk_msg(serial->dev, pipe, command, 2, + &alen, COMMAND_TIMEOUT_MS); if (ret) { - err("%s: Couldn't send command [%d]", serial->type->description, ret); + dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n", + serial->type->description, ret); goto no_firmware; } else if (alen != 2) { - err("%s: Send command incomplete [%d]", serial->type->description, alen); + dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n", + serial->type->description, alen); goto no_firmware; } - pipe = usb_rcvbulkpipe (serial->dev, command_port->bulk_in_endpointAddress); + pipe = usb_rcvbulkpipe(serial->dev, + command_port->bulk_in_endpointAddress); /* See the comment on the usb_clear_halt() above */ usb_clear_halt(serial->dev, pipe); - ret = usb_bulk_msg (serial->dev, pipe, result, sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); + ret = usb_bulk_msg(serial->dev, pipe, result, + sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); if (ret) { - err("%s: Couldn't get results [%d]", serial->type->description, ret); + dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n", + serial->type->description, ret); goto no_firmware; } else if (alen != sizeof(*hw_info) + 1) { - err("%s: Get results incomplete [%d]", serial->type->description, alen); + dev_err(&serial->dev->dev, "%s: Get results incomplete [%d]\n", + serial->type->description, alen); goto no_firmware; } else if (result[0] != command[0]) { - err("%s: Command failed [%d]", serial->type->description, result[0]); + dev_err(&serial->dev->dev, "%s: Command failed [%d]\n", + serial->type->description, result[0]); goto no_firmware; } hw_info = (struct whiteheat_hw_info *)&result[1]; - info("%s: Driver %s: Firmware v%d.%02d", serial->type->description, - DRIVER_VERSION, hw_info->sw_major_rev, hw_info->sw_minor_rev); + dev_info(&serial->dev->dev, "%s: Driver %s: Firmware v%d.%02d\n", + serial->type->description, DRIVER_VERSION, + hw_info->sw_major_rev, hw_info->sw_minor_rev); for (i = 0; i < serial->num_ports; i++) { port = serial->port[i]; info = kmalloc(sizeof(struct whiteheat_private), GFP_KERNEL); if (info == NULL) { - err("%s: Out of memory for port structures\n", serial->type->description); + dev_err(&port->dev, + "%s: Out of memory for port structures\n", + serial->type->description); goto no_private; } @@ -456,18 +491,20 @@ static int whiteheat_attach (struct usb_serial *serial) for (j = 0; j < urb_pool_size; j++) { urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) { - err("No free urbs available"); + dev_err(&port->dev, "No free urbs available\n"); goto no_rx_urb; } buf_size = port->read_urb->transfer_buffer_length; urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); if (!urb->transfer_buffer) { - err("Couldn't allocate urb buffer"); + dev_err(&port->dev, + "Couldn't allocate urb buffer\n"); goto no_rx_buf; } wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); if (!wrap) { - err("Couldn't allocate urb wrapper"); + dev_err(&port->dev, + "Couldn't allocate urb wrapper\n"); goto no_rx_wrap; } usb_fill_bulk_urb(urb, serial->dev, @@ -480,18 +517,20 @@ static int whiteheat_attach (struct usb_serial *serial) urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) { - err("No free urbs available"); + dev_err(&port->dev, "No free urbs available\n"); goto no_tx_urb; } buf_size = port->write_urb->transfer_buffer_length; urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); if (!urb->transfer_buffer) { - err("Couldn't allocate urb buffer"); + dev_err(&port->dev, + "Couldn't allocate urb buffer\n"); goto no_tx_buf; } wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); if (!wrap) { - err("Couldn't allocate urb wrapper"); + dev_err(&port->dev, + "Couldn't allocate urb wrapper\n"); goto no_tx_wrap; } usb_fill_bulk_urb(urb, serial->dev, @@ -506,9 +545,12 @@ static int whiteheat_attach (struct usb_serial *serial) usb_set_serial_port_data(port, info); } - command_info = kmalloc(sizeof(struct whiteheat_command_private), GFP_KERNEL); + command_info = kmalloc(sizeof(struct whiteheat_command_private), + GFP_KERNEL); if (command_info == NULL) { - err("%s: Out of memory for port structures\n", serial->type->description); + dev_err(&serial->dev->dev, + "%s: Out of memory for port structures\n", + serial->type->description); goto no_command_private; } @@ -525,9 +567,15 @@ static int whiteheat_attach (struct usb_serial *serial) no_firmware: /* Firmware likely not running */ - err("%s: Unable to retrieve firmware version, try replugging\n", serial->type->description); - err("%s: If the firmware is not running (status led not blinking)\n", serial->type->description); - err("%s: please contact support@connecttech.com\n", serial->type->description); + dev_err(&serial->dev->dev, + "%s: Unable to retrieve firmware version, try replugging\n", + serial->type->description); + dev_err(&serial->dev->dev, + "%s: If the firmware is not running (status led not blinking)\n", + serial->type->description); + dev_err(&serial->dev->dev, + "%s: please contact support@connecttech.com\n", + serial->type->description); kfree(result); return -ENODEV; @@ -570,7 +618,7 @@ no_command_buffer: } -static void whiteheat_shutdown (struct usb_serial *serial) +static void whiteheat_shutdown(struct usb_serial *serial) { struct usb_serial_port *command_port; struct usb_serial_port *port; @@ -585,7 +633,7 @@ static void whiteheat_shutdown (struct usb_serial *serial) /* free up our private data for our command port */ command_port = serial->port[COMMAND_PORT]; - kfree (usb_get_serial_port_data(command_port)); + kfree(usb_get_serial_port_data(command_port)); for (i = 0; i < serial->num_ports; i++) { port = serial->port[i]; @@ -612,11 +660,10 @@ static void whiteheat_shutdown (struct usb_serial *serial) return; } - -static int whiteheat_open (struct usb_serial_port *port, struct file *filp) +static int whiteheat_open(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp) { int retval = 0; - struct ktermios old_term; dbg("%s - port %d", __func__, port->number); @@ -624,7 +671,8 @@ static int whiteheat_open (struct usb_serial_port *port, struct file *filp) if (retval) goto exit; - port->tty->low_latency = 1; + if (tty) + tty->low_latency = 1; /* send an open port command */ retval = firm_open(port); @@ -640,9 +688,8 @@ static int whiteheat_open (struct usb_serial_port *port, struct file *filp) goto exit; } - old_term.c_cflag = ~port->tty->termios->c_cflag; - old_term.c_iflag = ~port->tty->termios->c_iflag; - whiteheat_set_termios(port, &old_term); + if (tty) + firm_setup_port(tty); /* Work around HCD bugs */ usb_clear_halt(port->serial->dev, port->read_urb->pipe); @@ -651,7 +698,9 @@ static int whiteheat_open (struct usb_serial_port *port, struct file *filp) /* Start reading from the device */ retval = start_port_read(port); if (retval) { - err("%s - failed submitting read urb, error %d", __func__, retval); + dev_err(&port->dev, + "%s - failed submitting read urb, error %d\n", + __func__, retval); firm_close(port); stop_command_port(port->serial); goto exit; @@ -663,7 +712,8 @@ exit: } -static void whiteheat_close(struct usb_serial_port *port, struct file * filp) +static void whiteheat_close(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp) { struct whiteheat_private *info = usb_get_serial_port_data(port); struct whiteheat_urb_wrap *wrap; @@ -681,7 +731,7 @@ static void whiteheat_close(struct usb_serial_port *port, struct file * filp) } mutex_unlock(&port->serial->disc_mutex); - port->tty->closing = 1; + tty->closing = 1; /* * Not currently in use; tty_wait_until_sent() calls @@ -689,12 +739,12 @@ static void whiteheat_close(struct usb_serial_port *port, struct file * filp) * acquisition. This should be fixed at some point. Greg's been * notified. if ((filp->f_flags & (O_NDELAY | O_NONBLOCK)) == 0) { - tty_wait_until_sent(port->tty, CLOSING_DELAY); + tty_wait_until_sent(tty, CLOSING_DELAY); } */ - tty_driver_flush_buffer(port->tty); - tty_ldisc_flush(port->tty); + tty_driver_flush_buffer(tty); + tty_ldisc_flush(tty); firm_report_tx_done(port); @@ -728,11 +778,12 @@ static void whiteheat_close(struct usb_serial_port *port, struct file * filp) stop_command_port(port->serial); - port->tty->closing = 0; + tty->closing = 0; } -static int whiteheat_write(struct usb_serial_port *port, const unsigned char *buf, int count) +static int whiteheat_write(struct tty_struct *tty, + struct usb_serial_port *port, const unsigned char *buf, int count) { struct usb_serial *serial = port->serial; struct whiteheat_private *info = usb_get_serial_port_data(port); @@ -763,16 +814,20 @@ static int whiteheat_write(struct usb_serial_port *port, const unsigned char *bu wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); urb = wrap->urb; - bytes = (count > port->bulk_out_size) ? port->bulk_out_size : count; - memcpy (urb->transfer_buffer, buf + sent, bytes); + bytes = (count > port->bulk_out_size) ? + port->bulk_out_size : count; + memcpy(urb->transfer_buffer, buf + sent, bytes); - usb_serial_debug_data(debug, &port->dev, __func__, bytes, urb->transfer_buffer); + usb_serial_debug_data(debug, &port->dev, + __func__, bytes, urb->transfer_buffer); urb->dev = serial->dev; urb->transfer_buffer_length = bytes; result = usb_submit_urb(urb, GFP_ATOMIC); if (result) { - err("%s - failed submitting write urb, error %d", __func__, result); + dev_err(&port->dev, + "%s - failed submitting write urb, error %d\n", + __func__, result); sent = result; spin_lock_irqsave(&info->lock, flags); list_add(tmp, &info->tx_urbs_free); @@ -790,16 +845,16 @@ static int whiteheat_write(struct usb_serial_port *port, const unsigned char *bu return sent; } - -static int whiteheat_write_room(struct usb_serial_port *port) +static int whiteheat_write_room(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; struct whiteheat_private *info = usb_get_serial_port_data(port); struct list_head *tmp; int room = 0; unsigned long flags; dbg("%s - port %d", __func__, port->number); - + spin_lock_irqsave(&info->lock, flags); list_for_each(tmp, &info->tx_urbs_free) room++; @@ -810,9 +865,9 @@ static int whiteheat_write_room(struct usb_serial_port *port) return (room); } - -static int whiteheat_tiocmget (struct usb_serial_port *port, struct file *file) +static int whiteheat_tiocmget(struct tty_struct *tty, struct file *file) { + struct usb_serial_port *port = tty->driver_data; struct whiteheat_private *info = usb_get_serial_port_data(port); unsigned int modem_signals = 0; @@ -827,10 +882,10 @@ static int whiteheat_tiocmget (struct usb_serial_port *port, struct file *file) return modem_signals; } - -static int whiteheat_tiocmset (struct usb_serial_port *port, struct file *file, +static int whiteheat_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) { + struct usb_serial_port *port = tty->driver_data; struct whiteheat_private *info = usb_get_serial_port_data(port); dbg("%s - port %d", __func__, port->number); @@ -851,65 +906,55 @@ static int whiteheat_tiocmset (struct usb_serial_port *port, struct file *file, } -static int whiteheat_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) +static int whiteheat_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg) { + struct usb_serial_port *port = tty->driver_data; struct serial_struct serstruct; void __user *user_arg = (void __user *)arg; dbg("%s - port %d, cmd 0x%.4x", __func__, port->number, cmd); switch (cmd) { - case TIOCGSERIAL: - memset(&serstruct, 0, sizeof(serstruct)); - serstruct.type = PORT_16654; - serstruct.line = port->serial->minor; - serstruct.port = port->number; - serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; - serstruct.xmit_fifo_size = port->bulk_out_size; - serstruct.custom_divisor = 0; - serstruct.baud_base = 460800; - serstruct.close_delay = CLOSING_DELAY; - serstruct.closing_wait = CLOSING_DELAY; - - if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) - return -EFAULT; - - break; - - case TIOCSSERIAL: - if (copy_from_user(&serstruct, user_arg, sizeof(serstruct))) - return -EFAULT; - - /* - * For now this is ignored. dip sets the ASYNC_[V]HI flags - * but this isn't used by us at all. Maybe someone somewhere - * will need the custom_divisor setting. - */ - - break; - - default: - break; + case TIOCGSERIAL: + memset(&serstruct, 0, sizeof(serstruct)); + serstruct.type = PORT_16654; + serstruct.line = port->serial->minor; + serstruct.port = port->number; + serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; + serstruct.xmit_fifo_size = port->bulk_out_size; + serstruct.custom_divisor = 0; + serstruct.baud_base = 460800; + serstruct.close_delay = CLOSING_DELAY; + serstruct.closing_wait = CLOSING_DELAY; + + if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) + return -EFAULT; + break; + default: + break; } return -ENOIOCTLCMD; } -static void whiteheat_set_termios(struct usb_serial_port *port, struct ktermios *old_termios) +static void whiteheat_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old_termios) { - dbg("%s -port %d", __func__, port->number); - firm_setup_port(port); + firm_setup_port(tty); } - -static void whiteheat_break_ctl(struct usb_serial_port *port, int break_state) { +static void whiteheat_break_ctl(struct tty_struct *tty, int break_state) +{ + struct usb_serial_port *port = tty->driver_data; firm_set_break(port, break_state); } -static int whiteheat_chars_in_buffer(struct usb_serial_port *port) +static int whiteheat_chars_in_buffer(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; struct whiteheat_private *info = usb_get_serial_port_data(port); struct list_head *tmp; struct whiteheat_urb_wrap *wrap; @@ -925,13 +970,14 @@ static int whiteheat_chars_in_buffer(struct usb_serial_port *port) } spin_unlock_irqrestore(&info->lock, flags); - dbg ("%s - returns %d", __func__, chars); + dbg("%s - returns %d", __func__, chars); return chars; } -static void whiteheat_throttle (struct usb_serial_port *port) +static void whiteheat_throttle(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; struct whiteheat_private *info = usb_get_serial_port_data(port); unsigned long flags; @@ -945,8 +991,9 @@ static void whiteheat_throttle (struct usb_serial_port *port) } -static void whiteheat_unthrottle (struct usb_serial_port *port) +static void whiteheat_unthrottle(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; struct whiteheat_private *info = usb_get_serial_port_data(port); int actually_throttled; unsigned long flags; @@ -993,7 +1040,7 @@ static void command_port_read_callback(struct urb *urb) command_info = usb_get_serial_port_data(command_port); if (!command_info) { - dbg ("%s - command_info is NULL, exiting.", __func__); + dbg("%s - command_info is NULL, exiting.", __func__); return; } if (status) { @@ -1004,7 +1051,8 @@ static void command_port_read_callback(struct urb *urb) return; } - usb_serial_debug_data(debug, &command_port->dev, __func__, urb->actual_length, data); + usb_serial_debug_data(debug, &command_port->dev, + __func__, urb->actual_length, data); if (data[0] == WHITEHEAT_CMD_COMPLETE) { command_info->command_finished = WHITEHEAT_CMD_COMPLETE; @@ -1013,21 +1061,23 @@ static void command_port_read_callback(struct urb *urb) command_info->command_finished = WHITEHEAT_CMD_FAILURE; wake_up(&command_info->wait_command); } else if (data[0] == WHITEHEAT_EVENT) { - /* These are unsolicited reports from the firmware, hence no waiting command to wakeup */ + /* These are unsolicited reports from the firmware, hence no + waiting command to wakeup */ dbg("%s - event received", __func__); } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { - memcpy(command_info->result_buffer, &data[1], urb->actual_length - 1); + memcpy(command_info->result_buffer, &data[1], + urb->actual_length - 1); command_info->command_finished = WHITEHEAT_CMD_COMPLETE; wake_up(&command_info->wait_command); - } else { + } else dbg("%s - bad reply from firmware", __func__); - } - + /* Continue trying to always read */ command_port->read_urb->dev = command_port->serial->dev; result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC); if (result) - dbg("%s - failed resubmitting read urb, error %d", __func__, result); + dbg("%s - failed resubmitting read urb, error %d", + __func__, result); } @@ -1045,7 +1095,7 @@ static void whiteheat_read_callback(struct urb *urb) wrap = urb_to_wrap(urb, &info->rx_urbs_submitted); if (!wrap) { spin_unlock(&info->lock); - err("%s - Not my urb!", __func__); + dev_err(&port->dev, "%s - Not my urb!\n", __func__); return; } list_del(&wrap->list); @@ -1060,7 +1110,8 @@ static void whiteheat_read_callback(struct urb *urb) return; } - usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); + usb_serial_debug_data(debug, &port->dev, + __func__, urb->actual_length, data); spin_lock(&info->lock); list_add_tail(&wrap->list, &info->rx_urb_q); @@ -1088,7 +1139,7 @@ static void whiteheat_write_callback(struct urb *urb) wrap = urb_to_wrap(urb, &info->tx_urbs_submitted); if (!wrap) { spin_unlock(&info->lock); - err("%s - Not my urb!", __func__); + dev_err(&port->dev, "%s - Not my urb!\n", __func__); return; } list_move(&wrap->list, &info->tx_urbs_free); @@ -1107,7 +1158,8 @@ static void whiteheat_write_callback(struct urb *urb) /***************************************************************************** * Connect Tech's White Heat firmware interface *****************************************************************************/ -static int firm_send_command(struct usb_serial_port *port, __u8 command, __u8 *data, __u8 datasize) +static int firm_send_command(struct usb_serial_port *port, __u8 command, + __u8 *data, __u8 datasize) { struct usb_serial_port *command_port; struct whiteheat_command_private *command_info; @@ -1122,13 +1174,13 @@ static int firm_send_command(struct usb_serial_port *port, __u8 command, __u8 *d command_info = usb_get_serial_port_data(command_port); mutex_lock(&command_info->mutex); command_info->command_finished = false; - + transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer; transfer_buffer[0] = command; - memcpy (&transfer_buffer[1], data, datasize); + memcpy(&transfer_buffer[1], data, datasize); command_port->write_urb->transfer_buffer_length = datasize + 1; command_port->write_urb->dev = port->serial->dev; - retval = usb_submit_urb (command_port->write_urb, GFP_NOIO); + retval = usb_submit_urb(command_port->write_urb, GFP_NOIO); if (retval) { dbg("%s - submit urb failed", __func__); goto exit; @@ -1155,51 +1207,57 @@ static int firm_send_command(struct usb_serial_port *port, __u8 command, __u8 *d if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) { dbg("%s - command completed.", __func__); switch (command) { - case WHITEHEAT_GET_DTR_RTS: - info = usb_get_serial_port_data(port); - memcpy(&info->mcr, command_info->result_buffer, sizeof(struct whiteheat_dr_info)); + case WHITEHEAT_GET_DTR_RTS: + info = usb_get_serial_port_data(port); + memcpy(&info->mcr, command_info->result_buffer, + sizeof(struct whiteheat_dr_info)); break; } } - exit: mutex_unlock(&command_info->mutex); return retval; } -static int firm_open(struct usb_serial_port *port) { +static int firm_open(struct usb_serial_port *port) +{ struct whiteheat_simple open_command; open_command.port = port->number - port->serial->minor + 1; - return firm_send_command(port, WHITEHEAT_OPEN, (__u8 *)&open_command, sizeof(open_command)); + return firm_send_command(port, WHITEHEAT_OPEN, + (__u8 *)&open_command, sizeof(open_command)); } -static int firm_close(struct usb_serial_port *port) { +static int firm_close(struct usb_serial_port *port) +{ struct whiteheat_simple close_command; close_command.port = port->number - port->serial->minor + 1; - return firm_send_command(port, WHITEHEAT_CLOSE, (__u8 *)&close_command, sizeof(close_command)); + return firm_send_command(port, WHITEHEAT_CLOSE, + (__u8 *)&close_command, sizeof(close_command)); } -static int firm_setup_port(struct usb_serial_port *port) { +static int firm_setup_port(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; struct whiteheat_port_settings port_settings; - unsigned int cflag = port->tty->termios->c_cflag; + unsigned int cflag = tty->termios->c_cflag; port_settings.port = port->number + 1; /* get the byte size */ switch (cflag & CSIZE) { - case CS5: port_settings.bits = 5; break; - case CS6: port_settings.bits = 6; break; - case CS7: port_settings.bits = 7; break; - default: - case CS8: port_settings.bits = 8; break; + case CS5: port_settings.bits = 5; break; + case CS6: port_settings.bits = 6; break; + case CS7: port_settings.bits = 7; break; + default: + case CS8: port_settings.bits = 8; break; } dbg("%s - data bits = %d", __func__, port_settings.bits); - + /* determine the parity */ if (cflag & PARENB) if (cflag & CMSPAR) @@ -1225,7 +1283,8 @@ static int firm_setup_port(struct usb_serial_port *port) { /* figure out the flow control settings */ if (cflag & CRTSCTS) - port_settings.hflow = (WHITEHEAT_HFLOW_CTS | WHITEHEAT_HFLOW_RTS); + port_settings.hflow = (WHITEHEAT_HFLOW_CTS | + WHITEHEAT_HFLOW_RTS); else port_settings.hflow = WHITEHEAT_HFLOW_NONE; dbg("%s - hardware flow control = %s %s %s %s", __func__, @@ -1233,81 +1292,95 @@ static int firm_setup_port(struct usb_serial_port *port) { (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "", (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "", (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : ""); - + /* determine software flow control */ - if (I_IXOFF(port->tty)) + if (I_IXOFF(tty)) port_settings.sflow = WHITEHEAT_SFLOW_RXTX; else port_settings.sflow = WHITEHEAT_SFLOW_NONE; dbg("%s - software flow control = %c", __func__, port_settings.sflow); - - port_settings.xon = START_CHAR(port->tty); - port_settings.xoff = STOP_CHAR(port->tty); - dbg("%s - XON = %2x, XOFF = %2x", __func__, port_settings.xon, port_settings.xoff); + + port_settings.xon = START_CHAR(tty); + port_settings.xoff = STOP_CHAR(tty); + dbg("%s - XON = %2x, XOFF = %2x", + __func__, port_settings.xon, port_settings.xoff); /* get the baud rate wanted */ - port_settings.baud = tty_get_baud_rate(port->tty); + port_settings.baud = tty_get_baud_rate(tty); dbg("%s - baud rate = %d", __func__, port_settings.baud); /* fixme: should set validated settings */ - tty_encode_baud_rate(port->tty, port_settings.baud, port_settings.baud); + tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud); /* handle any settings that aren't specified in the tty structure */ port_settings.lloop = 0; - + /* now send the message to the device */ - return firm_send_command(port, WHITEHEAT_SETUP_PORT, (__u8 *)&port_settings, sizeof(port_settings)); + return firm_send_command(port, WHITEHEAT_SETUP_PORT, + (__u8 *)&port_settings, sizeof(port_settings)); } -static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) { +static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) +{ struct whiteheat_set_rdb rts_command; rts_command.port = port->number - port->serial->minor + 1; rts_command.state = onoff; - return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&rts_command, sizeof(rts_command)); + return firm_send_command(port, WHITEHEAT_SET_RTS, + (__u8 *)&rts_command, sizeof(rts_command)); } -static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) { +static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) +{ struct whiteheat_set_rdb dtr_command; dtr_command.port = port->number - port->serial->minor + 1; dtr_command.state = onoff; - return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&dtr_command, sizeof(dtr_command)); + return firm_send_command(port, WHITEHEAT_SET_DTR, + (__u8 *)&dtr_command, sizeof(dtr_command)); } -static int firm_set_break(struct usb_serial_port *port, __u8 onoff) { +static int firm_set_break(struct usb_serial_port *port, __u8 onoff) +{ struct whiteheat_set_rdb break_command; break_command.port = port->number - port->serial->minor + 1; break_command.state = onoff; - return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&break_command, sizeof(break_command)); + return firm_send_command(port, WHITEHEAT_SET_BREAK, + (__u8 *)&break_command, sizeof(break_command)); } -static int firm_purge(struct usb_serial_port *port, __u8 rxtx) { +static int firm_purge(struct usb_serial_port *port, __u8 rxtx) +{ struct whiteheat_purge purge_command; purge_command.port = port->number - port->serial->minor + 1; purge_command.what = rxtx; - return firm_send_command(port, WHITEHEAT_PURGE, (__u8 *)&purge_command, sizeof(purge_command)); + return firm_send_command(port, WHITEHEAT_PURGE, + (__u8 *)&purge_command, sizeof(purge_command)); } -static int firm_get_dtr_rts(struct usb_serial_port *port) { +static int firm_get_dtr_rts(struct usb_serial_port *port) +{ struct whiteheat_simple get_dr_command; get_dr_command.port = port->number - port->serial->minor + 1; - return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, (__u8 *)&get_dr_command, sizeof(get_dr_command)); + return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, + (__u8 *)&get_dr_command, sizeof(get_dr_command)); } -static int firm_report_tx_done(struct usb_serial_port *port) { +static int firm_report_tx_done(struct usb_serial_port *port) +{ struct whiteheat_simple close_command; close_command.port = port->number - port->serial->minor + 1; - return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, (__u8 *)&close_command, sizeof(close_command)); + return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, + (__u8 *)&close_command, sizeof(close_command)); } @@ -1319,7 +1392,7 @@ static int start_command_port(struct usb_serial *serial) struct usb_serial_port *command_port; struct whiteheat_command_private *command_info; int retval = 0; - + command_port = serial->port[COMMAND_PORT]; command_info = usb_get_serial_port_data(command_port); mutex_lock(&command_info->mutex); @@ -1330,7 +1403,9 @@ static int start_command_port(struct usb_serial *serial) command_port->read_urb->dev = serial->dev; retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL); if (retval) { - err("%s - failed submitting read urb, error %d", __func__, retval); + dev_err(&serial->dev->dev, + "%s - failed submitting read urb, error %d\n", + __func__, retval); goto exit; } } @@ -1400,7 +1475,8 @@ static int start_port_read(struct usb_serial_port *port) } -static struct whiteheat_urb_wrap *urb_to_wrap(struct urb* urb, struct list_head *head) +static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, + struct list_head *head) { struct whiteheat_urb_wrap *wrap; struct list_head *tmp; @@ -1426,7 +1502,7 @@ static void rx_data_softint(struct work_struct *work) struct whiteheat_private *info = container_of(work, struct whiteheat_private, rx_work); struct usb_serial_port *port = info->port; - struct tty_struct *tty = port->tty; + struct tty_struct *tty = tty_port_tty_get(&port->port); struct whiteheat_urb_wrap *wrap; struct urb *urb; unsigned long flags; @@ -1438,7 +1514,7 @@ static void rx_data_softint(struct work_struct *work) spin_lock_irqsave(&info->lock, flags); if (info->flags & THROTTLED) { spin_unlock_irqrestore(&info->lock, flags); - return; + goto out; } list_for_each_safe(tmp, tmp2, &info->rx_urb_q) { @@ -1449,7 +1525,8 @@ static void rx_data_softint(struct work_struct *work) urb = wrap->urb; if (tty && urb->actual_length) { - int len = tty_buffer_request_room(tty, urb->actual_length); + int len = tty_buffer_request_room(tty, + urb->actual_length); /* This stuff can go away now I suspect */ if (unlikely(len < urb->actual_length)) { spin_lock_irqsave(&info->lock, flags); @@ -1457,7 +1534,7 @@ static void rx_data_softint(struct work_struct *work) spin_unlock_irqrestore(&info->lock, flags); tty_flip_buffer_push(tty); schedule_work(&info->rx_work); - return; + goto out; } tty_insert_flip_string(tty, urb->transfer_buffer, len); sent += len; @@ -1466,7 +1543,9 @@ static void rx_data_softint(struct work_struct *work) urb->dev = port->serial->dev; result = usb_submit_urb(urb, GFP_ATOMIC); if (result) { - err("%s - failed resubmitting read urb, error %d", __func__, result); + dev_err(&port->dev, + "%s - failed resubmitting read urb, error %d\n", + __func__, result); spin_lock_irqsave(&info->lock, flags); list_add(tmp, &info->rx_urbs_free); continue; @@ -1479,13 +1558,15 @@ static void rx_data_softint(struct work_struct *work) if (sent) tty_flip_buffer_push(tty); +out: + tty_kref_put(tty); } /***************************************************************************** * Connect Tech's White Heat module functions *****************************************************************************/ -static int __init whiteheat_init (void) +static int __init whiteheat_init(void) { int retval; retval = usb_serial_register(&whiteheat_fake_device); @@ -1497,7 +1578,8 @@ static int __init whiteheat_init (void) retval = usb_register(&whiteheat_driver); 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(&whiteheat_device); @@ -1508,19 +1590,19 @@ failed_fake_register: } -static void __exit whiteheat_exit (void) +static void __exit whiteheat_exit(void) { - usb_deregister (&whiteheat_driver); - usb_serial_deregister (&whiteheat_fake_device); - usb_serial_deregister (&whiteheat_device); + usb_deregister(&whiteheat_driver); + usb_serial_deregister(&whiteheat_fake_device); + usb_serial_deregister(&whiteheat_device); } module_init(whiteheat_init); module_exit(whiteheat_exit); -MODULE_AUTHOR( DRIVER_AUTHOR ); -MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); MODULE_FIRMWARE("whiteheat.fw"); |