/* * KLSI KL5KUSB105 chip RS232 converter driver * * Copyright (C) 2001 Utz-Uwe Haus * * 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. * * All information about the device was acquired using SniffUSB ans snoopUSB * on Windows98. * It was written out of frustration with the PalmConnect USB Serial adapter * sold by Palm Inc. * 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, * 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 * on the protocol used (or find errors in my reverse-engineered stuff), please * let me know. * * The code was only tested with a PalmConnect USB adapter; if you * are adventurous, try it with any KLSI-based device and let me know how it * breaks so that I can fix it! */ /* TODO: * check modem line signals * 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 #include #include #include #include #include #include #include /*#include */ #include #include #include #include /*#include */ #include #ifdef CONFIG_USB_SERIAL_DEBUG static int debug = 1; #else static int debug; #endif #include "usb-serial.h" #include "kl5kusb105.h" /* * Version Information */ #define DRIVER_VERSION "v0.3a" #define DRIVER_AUTHOR "Utz-Uwe Haus " #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, int from_user, const unsigned char *buf, int count); static void klsi_105_write_bulk_callback (struct urb *urb); 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); 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 ); */ /* * All of the device info needed for the MCT USB-RS232 converter. */ static __devinitdata struct usb_device_id id_table_combined [] = { { USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) }, { USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) }, { } /* Terminating entry */ }; static __devinitdata struct usb_device_id palmconnect_table [] = { { USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) }, { } /* Terminating entry */ }; static __devinitdata struct usb_device_id kl5kusb105d_table [] = { { USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE (usb, id_table_combined); static struct usb_serial_device_type palmconnect_device = { name: "PalmConnect USB Serial", id_table: palmconnect_table, needs_interrupt_in: MUST_HAVE, /* 1 interrupt-in endpoints */ needs_bulk_in: MUST_HAVE, /* 1 bulk-in endpoint */ needs_bulk_out: MUST_HAVE, /* 1 bulk-out endpoint */ 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,*/ startup: klsi_105_startup, shutdown: klsi_105_shutdown, throttle: klsi_105_throttle, unthrottle: klsi_105_unthrottle, }; static struct usb_serial_device_type kl5kusb105d_device = { name: "generic KL5KUSB105D USB->Serial", id_table: kl5kusb105d_table, needs_interrupt_in: MUST_HAVE, /* 1 interrupt-in endpoints */ needs_bulk_in: MUST_HAVE, /* 1 bulk-in endpoint */ needs_bulk_out: MUST_HAVE, /* 1 bulk-out endpoint */ 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,*/ startup: klsi_105_startup, shutdown: klsi_105_shutdown, throttle: klsi_105_throttle, unthrottle: klsi_105_unthrottle, }; struct klsi_105_port_settings { __u8 pktlen; /* always 5, it seems */ __u8 baudrate; __u8 databits; __u8 unknown1; __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; unsigned long line_state; /* modem line settings */ /* write pool */ struct urb * write_urb_pool[NUM_URBS]; spinlock_t write_urb_pool_lock; unsigned long bytes_in; unsigned long bytes_out; }; /* * Handle vendor specific USB requests */ #define KLSI_TIMEOUT (HZ * 5 ) /* default urb timeout */ static int klsi_105_chg_port_settings(struct usb_serial *serial, struct klsi_105_port_settings *settings) { int rc; rc = usb_control_msg(serial->dev, usb_sndctrlpipe(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(__FUNCTION__ " - %d byte block, baudrate %x, databits %d, u1 %d, u2 %d", settings->pktlen, settings->baudrate, settings->databits, settings->unknown1, settings->unknown2); return rc; } /* klsi_105_chg_port_settings */ /* translate a 16-bit status value from the device to linux's TIO bits */ static unsigned long klsi_105_status2linestate(const __u16 status) { unsigned long res = 0; res = ((status & KL5KUSB105A_DSR) ? TIOCM_DSR : 0) | ((status & KL5KUSB105A_CTS) ? TIOCM_CTS : 0) ; return res; } /* * Read line control via vendor command and return result through * *line_state_p */ /* It seems that the status buffer has always only 2 bytes length */ #define KLSI_STATUSBUF_LEN 2 static int klsi_105_get_line_state(struct usb_serial *serial, unsigned long *line_state_p) { int rc; __u8 status_buf[KLSI_STATUSBUF_LEN] = { -1,-1}; __u16 status; info(__FUNCTION__ " - sending SIO Poll request"); rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), KL5KUSB105A_SIO_POLL, USB_TYPE_VENDOR | USB_DIR_IN, 0, /* value */ 0, /* index */ status_buf, KLSI_STATUSBUF_LEN, 10*HZ ); if (rc < 0) err("Reading line status failed (error = %d)", rc); else { status = status_buf[0] + (status_buf[1]<<8); info(__FUNCTION__ " - read status %x %x", status_buf[0], status_buf[1]); *line_state_p = klsi_105_status2linestate(status); } return rc; } /* * Driver's tty interface functions */ static int klsi_105_startup (struct usb_serial *serial) { struct klsi_105_private *priv; int i; /* check if we support the product id (see keyspan.c) * FIXME */ /* allocate the private data structure */ for (i=0; inum_ports; i++) { serial->port[i].private = kmalloc(sizeof(struct klsi_105_private), GFP_KERNEL); if (!serial->port[i].private) { dbg(__FUNCTION__ "kmalloc for klsi_105_private failed."); return (-1); /* error */ } priv = (struct klsi_105_private *)serial->port[i].private; /* set initial values for control structures */ priv->cfg.pktlen = 5; priv->cfg.baudrate = kl5kusb105a_sio_b9600; priv->cfg.databits = kl5kusb105a_dtb_8; priv->cfg.unknown1 = 0; priv->cfg.unknown2 = 1; priv->line_state = 0; priv->bytes_in = 0; priv->bytes_out = 0; spin_lock_init (&priv->write_urb_pool_lock); for (i=0; iwrite_urb_pool[i] = 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 (__FUNCTION__ " - out of memory for urb buffers."); continue; } } /* priv->termios is left uninitalized until port opening */ init_waitqueue_head(&serial->port[i].write_wait); } return (0); } /* klsi_105_startup */ static void klsi_105_shutdown (struct usb_serial *serial) { int i; dbg (__FUNCTION__); /* stop reads and writes on all ports */ for (i=0; i < serial->num_ports; ++i) { struct klsi_105_private *priv = (struct klsi_105_private*) serial->port[i].private; unsigned long flags; while (serial->port[i].open_count > 0) { klsi_105_close (&serial->port[i], NULL); } if (priv) { /* kill our write urb pool */ int j; struct urb **write_urbs = priv->write_urb_pool; spin_lock_irqsave(&priv->write_urb_pool_lock,flags); for (j = 0; j < NUM_URBS; j++) { if (write_urbs[j]) { /* FIXME - uncomment the following * usb_unlink_urb call when the host * controllers get fixed to set * urb->dev = NULL after the urb is * finished. Otherwise this call * oopses. */ /* usb_unlink_urb(write_urbs[j]); */ if (write_urbs[j]->transfer_buffer) kfree(write_urbs[j]->transfer_buffer); usb_free_urb (write_urbs[j]); } } spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags); kfree(serial->port[i].private); } } } /* klsi_105_shutdown */ static int klsi_105_open (struct usb_serial_port *port, struct file *filp) { struct usb_serial *serial = port->serial; struct klsi_105_private *priv = (struct klsi_105_private *)port->private; int retval = 0; dbg(__FUNCTION__" port %d", port->number); down (&port->sem); ++port->open_count; MOD_INC_USE_COUNT; if (!port->active) { int rc; int i; unsigned long line_state; port->active = 1; /* force low_latency on so that our tty_push actually forces * the data through * port->tty->low_latency = 1; */ /* Do a defined restart: * Set up sane default baud rate and send the 'READ_ON' * vendor command. * FIXME: set modem line control (how?) * Then read the modem line control and store values in * priv->line_state. */ priv->cfg.pktlen = 5; priv->cfg.baudrate = kl5kusb105a_sio_b9600; priv->cfg.databits = kl5kusb105a_dtb_8; priv->cfg.unknown1 = 0; priv->cfg.unknown2 = 1; klsi_105_chg_port_settings(serial, &(priv->cfg)); /* set up termios structure */ 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; itermios.c_cc[i] = port->tty->termios->c_cc[i]; /* READ_ON and urb submission */ FILL_BULK_URB(port->read_urb, serial->dev, usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, klsi_105_read_bulk_callback, port); port->read_urb->transfer_flags |= USB_QUEUE_BULK; rc = usb_submit_urb(port->read_urb); if (rc) { err(__FUNCTION__ " - failed submitting read urb, error %d", rc); retval = rc; goto exit; } rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev,0), KL5KUSB105A_SIO_CONFIGURE, USB_TYPE_VENDOR|USB_DIR_OUT|USB_RECIP_INTERFACE, KL5KUSB105A_SIO_CONFIGURE_READ_ON, 0, /* index */ NULL, 0, KLSI_TIMEOUT); if (rc < 0) { err("Enabling read failed (error = %d)", rc); retval = rc; } else dbg(__FUNCTION__ " - enabled reading"); rc = klsi_105_get_line_state(serial, &line_state); if (rc >= 0) { priv->line_state = line_state; dbg(__FUNCTION__ " - read line state 0x%lx", line_state); retval = 0; } else retval = rc; } exit: up (&port->sem); return retval; } /* klsi_105_open */ static void klsi_105_close (struct usb_serial_port *port, struct file *filp) { struct usb_serial *serial; struct klsi_105_private *priv = (struct klsi_105_private *)port->private; dbg(__FUNCTION__" port %d", port->number); serial = get_usb_serial (port, __FUNCTION__); if(!serial) return; down (&port->sem); --port->open_count; if (port->open_count <= 0) { /* send READ_OFF */ int rc = usb_control_msg(serial->dev, usb_sndctrlpipe(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); /* shutdown our bulk reads and writes */ usb_unlink_urb (port->write_urb); usb_unlink_urb (port->read_urb); /* unlink our write pool */ /* FIXME */ /* wgg - do I need this? I think so. */ usb_unlink_urb (port->interrupt_in_urb); port->active = 0; info("kl5kusb105 port stats: %ld bytes in, %ld bytes out", priv->bytes_in, priv->bytes_out); } up (&port->sem); MOD_DEC_USE_COUNT; } /* 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 * 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, int from_user, const unsigned char *buf, int count) { struct usb_serial *serial = port->serial; struct klsi_105_private *priv = (struct klsi_105_private*) port->private; int result, size; int bytes_sent=0; dbg(__FUNCTION__ " - port %d", port->number); down (&port->sem); /* to lock against someone else trying to take an URB we just selected from the pool */ 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->write_urb_pool_lock, flags); for (i=0; iwrite_urb_pool[i]->status != -EINPROGRESS) { urb = priv->write_urb_pool[i]; dbg(__FUNCTION__ " - using pool URB %d", i); break; } } spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags); if (urb==NULL) { dbg (__FUNCTION__ " - no more free urbs"); goto exit; } if (urb->transfer_buffer == NULL) { urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); if (urb->transfer_buffer == NULL) { err(__FUNCTION__ " - no more kernel memory..."); goto exit; } } size = min (count, port->bulk_out_size - KLSI_105_DATA_OFFSET); size = min (size, URB_TRANSFER_BUFFER_SIZE - KLSI_105_DATA_OFFSET); if (from_user) { if (copy_from_user(urb->transfer_buffer + KLSI_105_DATA_OFFSET, buf, size)) { up (&port->sem); return -EFAULT; } } else { 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 */ FILL_BULK_URB(urb, serial->dev, usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), urb->transfer_buffer, URB_TRANSFER_BUFFER_SIZE, klsi_105_write_bulk_callback, port); urb->transfer_flags |= USB_QUEUE_BULK; /* send the data out the bulk port */ result = usb_submit_urb(urb); if (result) { err(__FUNCTION__ " - failed submitting write urb, error %d", result); goto exit; } buf += size; bytes_sent += size; count -= size; } exit: up (&port->sem); priv->bytes_out+=bytes_sent; return bytes_sent; /* that's how much we wrote */ } /* klsi_105_write */ static void klsi_105_write_bulk_callback ( struct urb *urb) { struct usb_serial_port *port = (struct usb_serial_port *)urb->context; struct usb_serial *serial = port->serial; dbg(__FUNCTION__ " - port %d", port->number); if (!serial) { dbg(__FUNCTION__ " - bad serial pointer, exiting"); return; } if (urb->status) { dbg(__FUNCTION__ " - nonzero write bulk status received: %d", urb->status); return; } /* from generic_write_bulk_callback */ queue_task(&port->tqueue, &tq_immediate); mark_bh(IMMEDIATE_BH); return; } /* 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 = (struct klsi_105_private*) port->private; spin_lock_irqsave (&priv->write_urb_pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { if (priv->write_urb_pool[i]->status == -EINPROGRESS) { chars += URB_TRANSFER_BUFFER_SIZE; } } spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags); dbg (__FUNCTION__ " - returns %d", 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 = (struct klsi_105_private*) port->private; spin_lock_irqsave (&priv->write_urb_pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { if (priv->write_urb_pool[i]->status != -EINPROGRESS) { room += URB_TRANSFER_BUFFER_SIZE; } } spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags); dbg(__FUNCTION__ " - returns %d", room); return (room); } static void klsi_105_read_bulk_callback (struct urb *urb) { struct usb_serial_port *port = (struct usb_serial_port *)urb->context; struct usb_serial *serial = port->serial; struct klsi_105_private *priv = (struct klsi_105_private*) port->private; struct tty_struct *tty; unsigned char *data = urb->transfer_buffer; int rc; dbg(__FUNCTION__ " - port %d", port->number); /* The urb might have been killed. */ if (urb->status) { dbg(__FUNCTION__ " - nonzero read bulk status received: %d", urb->status); return; } if (!serial) { dbg(__FUNCTION__ " - bad serial pointer, exiting"); 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(__FUNCTION__ " - emtpy URB"); */ ; } else if (urb->actual_length <= 2) { dbg(__FUNCTION__ " - size %d URB not understood", urb->actual_length); usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data); } else { int i; 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 (__FILE__, __FUNCTION__, urb->actual_length, data); if (bytes_sent + 2 > urb->actual_length) { dbg(__FUNCTION__ " - trying to read more data than available" " (%d vs. %d)", bytes_sent+2, urb->actual_length); /* cap at implied limit */ bytes_sent = urb->actual_length - 2; } for (i = 2; i < 2+bytes_sent; i++) { /* if we insert more than TTY_FLIPBUF_SIZE characters, * we drop them. */ if(tty->flip.count >= TTY_FLIPBUF_SIZE) { tty_flip_buffer_push(tty); } /* this doesn't actually push the data through unless * tty->low_latency is set */ tty_insert_flip_char(tty, ((__u8*) data)[i], 0); } tty_flip_buffer_push(tty); priv->bytes_in += bytes_sent; } /* Continue trying to always read */ FILL_BULK_URB(port->read_urb, serial->dev, usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, klsi_105_read_bulk_callback, port); rc = usb_submit_urb(port->read_urb); if (rc) err(__FUNCTION__ " - failed resubmitting read urb, error %d", rc); } /* klsi_105_read_bulk_callback */ static void klsi_105_set_termios (struct usb_serial_port *port, struct termios *old_termios) { struct usb_serial *serial = port->serial; struct klsi_105_private *priv = (struct klsi_105_private *)port->private; unsigned int iflag = port->tty->termios->c_iflag; unsigned int old_iflag = old_termios->c_iflag; unsigned int cflag = port->tty->termios->c_cflag; unsigned int old_cflag = old_termios->c_cflag; /* * Update baud rate */ if( (cflag & CBAUD) != (old_cflag & CBAUD) ) { /* reassert DTR and (maybe) RTS on transition from B0 */ if( (old_cflag & CBAUD) == B0 ) { dbg(__FUNCTION__ ": baud was B0"); #if 0 priv->control_state |= TIOCM_DTR; /* don't set RTS if using hardware flow control */ 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"); priv->cfg.baudrate = kl5kusb105a_sio_b9600; break; } if ((cflag & CBAUD) == B0 ) { dbg(__FUNCTION__ ": baud is B0"); /* 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); #endif } } if ((cflag & CSIZE) != (old_cflag & CSIZE)) { /* set the number of data bits */ switch (cflag & CSIZE) { case CS5: dbg(__FUNCTION__ " - 5 bits/byte not supported"); return ; case CS6: dbg(__FUNCTION__ " - 6 bits/byte not supported"); return ; case CS7: priv->cfg.databits = kl5kusb105a_dtb_7; break; case CS8: priv->cfg.databits = kl5kusb105a_dtb_8; break; default: err("CSIZE was not CS5-CS8, using default of 8"); 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) ) { #if 0 priv->last_lcr = 0; /* set the parity */ if (cflag & PARENB) priv->last_lcr |= (cflag & PARODD) ? MCT_U232_PARITY_ODD : MCT_U232_PARITY_EVEN; else priv->last_lcr |= MCT_U232_PARITY_NONE; /* set the number of stop bits */ priv->last_lcr |= (cflag & CSTOPB) ? MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1; mct_u232_set_line_ctrl(serial, priv->last_lcr); #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) || (iflag & IXON) != (old_iflag & IXON) || (cflag & CRTSCTS) != (old_cflag & CRTSCTS) ) { /* Drop DTR/RTS if no flow control otherwise assert */ #if 0 if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS) ) priv->control_state |= TIOCM_DTR | TIOCM_RTS; else priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); mct_u232_set_modem_ctrl(serial, priv->control_state); #endif ; } /* now commit changes to device */ klsi_105_chg_port_settings(serial, &(priv->cfg)); } /* klsi_105_set_termios */ #if 0 static void mct_u232_break_ctl( struct usb_serial_port *port, int break_state ) { struct usb_serial *serial = port->serial; struct mct_u232_private *priv = (struct mct_u232_private *)port->private; unsigned char lcr = priv->last_lcr; dbg (__FUNCTION__ "state=%d", break_state); if (break_state) lcr |= MCT_U232_SET_BREAK; mct_u232_set_line_ctrl(serial, lcr); } /* mct_u232_break_ctl */ #endif static int klsi_105_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) { struct usb_serial *serial = port->serial; struct klsi_105_private *priv = (struct klsi_105_private *)port->private; int mask; dbg (__FUNCTION__ "cmd=0x%x", cmd); /* Based on code from acm.c and others */ switch (cmd) { case TIOCMGET: { int rc; unsigned long line_state; dbg (__FUNCTION__ " - TIOCMGET request, just guessing"); rc = klsi_105_get_line_state(serial, &line_state); if (rc < 0) { err("Reading line control failed (error = %d)", rc); /* better return value? EAGAIN? */ return -ENOIOCTLCMD; } else { priv->line_state = line_state; dbg(__FUNCTION__ " - read line state 0x%lx", line_state); } return put_user(priv->line_state, (unsigned long *) arg); }; case TIOCMSET: /* Turns on and off the lines as specified by the mask */ case TIOCMBIS: /* turns on (Sets) the lines as specified by the mask */ case TIOCMBIC: /* turns off (Clears) the lines as specified by the mask */ if (get_user(mask, (unsigned long *) arg)) return -EFAULT; if ((cmd == TIOCMSET) || (mask & TIOCM_RTS)) { /* RTS needs set */ if( ((cmd == TIOCMSET) && (mask & TIOCM_RTS)) || (cmd == TIOCMBIS) ) dbg (__FUNCTION__ " - set RTS not handled"); /* priv->control_state |= TIOCM_RTS; */ else dbg (__FUNCTION__ " - clear RTS not handled"); /* priv->control_state &= ~TIOCM_RTS; */ } if ((cmd == TIOCMSET) || (mask & TIOCM_DTR)) { /* DTR needs set */ if( ((cmd == TIOCMSET) && (mask & TIOCM_DTR)) || (cmd == TIOCMBIS) ) dbg (__FUNCTION__ " - set DTR not handled"); /* priv->control_state |= TIOCM_DTR; */ else dbg (__FUNCTION__ " - clear DTR not handled"); /* priv->control_state &= ~TIOCM_DTR; */ } /* mct_u232_set_modem_ctrl(serial, priv->control_state); */ break; case TIOCMIWAIT: /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/ /* TODO */ dbg (__FUNCTION__ " - TIOCMIWAIT not handled"); return -ENOIOCTLCMD; case TIOCGICOUNT: /* return count of modemline transitions */ /* TODO */ dbg (__FUNCTION__ " - TIOCGICOUNT not handled"); return -ENOIOCTLCMD; case TCGETS: { /* return current info to caller */ int retval; dbg (__FUNCTION__ " - TCGETS data faked/incomplete"); retval = verify_area(VERIFY_WRITE, (void *)arg, sizeof(struct termios)); if (retval) return(retval); kernel_termios_to_user_termios((struct termios *)arg, &priv->termios); return(0); } case TCSETS: { /* set port termios to the one given by the user */ int retval; dbg (__FUNCTION__ " - TCSETS not handled"); retval = verify_area(VERIFY_READ, (void *)arg, sizeof(struct termios)); if (retval) return(retval); user_termios_to_kernel_termios(&priv->termios, (struct termios *)arg); 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(__FUNCTION__ ": arg not supported - 0x%04x",cmd); return(-ENOIOCTLCMD); break; } return 0; } /* klsi_105_ioctl */ static void klsi_105_throttle (struct usb_serial_port *port) { dbg(__FUNCTION__ " - port %d", port->number); down (&port->sem); usb_unlink_urb (port->read_urb); up (&port->sem); return; } static void klsi_105_unthrottle (struct usb_serial_port *port) { int result; dbg(__FUNCTION__ " - port %d", port->number); down (&port->sem); port->read_urb->dev = port->serial->dev; result = usb_submit_urb(port->read_urb); if (result) err(__FUNCTION__ " - failed submitting read urb, error %d", result); up (&port->sem); return; } static int __init klsi_105_init (void) { usb_serial_register (&palmconnect_device); usb_serial_register (&kl5kusb105d_device); info(DRIVER_DESC " " DRIVER_VERSION); return 0; } static void __exit klsi_105_exit (void) { usb_serial_deregister (&palmconnect_device); usb_serial_deregister (&kl5kusb105d_device); } module_init (klsi_105_init); module_exit (klsi_105_exit); MODULE_AUTHOR( DRIVER_AUTHOR ); MODULE_DESCRIPTION( DRIVER_DESC ); MODULE_LICENSE("GPL"); MODULE_PARM(debug, "i"); MODULE_PARM_DESC(debug, "enable extensive debugging messages"); /* FIXME: implement MODULE_PARM(num_urbs, "i"); MODULE_PARM_DESC(num_urbs, "number of URBs to use in write pool"); */ /* vim: set sts=8 ts=8 sw=8: */