| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds | 1244 | 57.78% | 1 | 1.85% |
| Greg Kroah-Hartman | 382 | 17.74% | 22 | 40.74% |
| Johan Hovold | 338 | 15.70% | 10 | 18.52% |
| Alan Cox | 103 | 4.78% | 8 | 14.81% |
| Alan Stern | 27 | 1.25% | 2 | 3.70% |
| Rusty Russell | 22 | 1.02% | 1 | 1.85% |
| Oliver Neukum | 10 | 0.46% | 1 | 1.85% |
| Jiri Slaby | 8 | 0.37% | 2 | 3.70% |
| Harvey Harrison | 8 | 0.37% | 2 | 3.70% |
| Pan Bian | 5 | 0.23% | 1 | 1.85% |
| Al Viro | 3 | 0.14% | 1 | 1.85% |
| Nishanth Aravamudan | 2 | 0.09% | 2 | 3.70% |
| Márton Németh | 1 | 0.05% | 1 | 1.85% |
| Total | 2153 | 54 |
// SPDX-License-Identifier: GPL-2.0+ /* * KLSI KL5KUSB105 chip RS232 converter driver * * Copyright (C) 2010 Johan Hovold <jhovold@gmail.com> * Copyright (C) 2001 Utz-Uwe Haus <haus@uuhaus.de> * * 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 */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/tty.h> #include <linux/tty_driver.h> #include <linux/tty_flip.h> #include <linux/module.h> #include <linux/uaccess.h> #include <asm/unaligned.h> #include <linux/usb.h> #include <linux/usb/serial.h> #include "kl5kusb105.h" #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_port_probe(struct usb_serial_port *port); static int klsi_105_port_remove(struct usb_serial_port *port); 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); 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 const struct usb_device_id id_table[] = { { USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, id_table); static struct usb_serial_driver kl5kusb105d_device = { .driver = { .owner = THIS_MODULE, .name = "kl5kusb105d", }, .description = "KL5KUSB105D / PalmConnect", .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, .tiocmget = klsi_105_tiocmget, .port_probe = klsi_105_port_probe, .port_remove = klsi_105_port_remove, .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, }; static struct usb_serial_driver * const serial_drivers[] = { &kl5kusb105d_device, NULL }; struct klsi_105_port_settings { u8 pktlen; /* always 5, it seems */ u8 baudrate; u8 databits; u8 unknown1; u8 unknown2; }; struct klsi_105_private { struct klsi_105_port_settings cfg; unsigned long line_state; /* modem line settings */ spinlock_t lock; }; /* * Handle vendor specific USB requests */ #define KLSI_TIMEOUT 5000 /* default urb timeout */ static int klsi_105_chg_port_settings(struct usb_serial_port *port, struct klsi_105_port_settings *settings) { 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); if (rc < 0) dev_err(&port->dev, "Change port settings failed (error = %d)\n", rc); dev_dbg(&port->dev, "pktlen %u, baudrate 0x%02x, databits %u, u1 %u, u2 %u\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) { 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_port *port, unsigned long *line_state_p) { int rc; u8 *status_buf; __u16 status; status_buf = kmalloc(KLSI_STATUSBUF_LEN, GFP_KERNEL); if (!status_buf) 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, 0, /* value */ 0, /* index */ status_buf, KLSI_STATUSBUF_LEN, 10000 ); if (rc != KLSI_STATUSBUF_LEN) { dev_err(&port->dev, "reading line status failed: %d\n", rc); if (rc >= 0) rc = -EIO; } else { status = get_unaligned_le16(status_buf); dev_dbg(&port->dev, "read status %02x %02x\n", status_buf[0], status_buf[1]); *line_state_p = klsi_105_status2linestate(status); } kfree(status_buf); return rc; } /* * Driver's tty interface functions */ static int klsi_105_port_probe(struct usb_serial_port *port) { struct klsi_105_private *priv; priv = kmalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; /* 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; spin_lock_init(&priv->lock); usb_set_serial_port_data(port, priv); return 0; } static int klsi_105_port_remove(struct usb_serial_port *port) { struct klsi_105_private *priv; priv = usb_get_serial_port_data(port); kfree(priv); return 0; } 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; unsigned long line_state; struct klsi_105_port_settings *cfg; unsigned long flags; /* 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. */ cfg = kmalloc(sizeof(*cfg), GFP_KERNEL); if (!cfg) 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); spin_lock_irqsave(&priv->lock, flags); 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 */ rc = usb_serial_generic_open(tty, port); if (rc) { retval = rc; goto err_free_cfg; } rc = usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->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) { dev_err(&port->dev, "Enabling read failed (error = %d)\n", rc); retval = rc; goto err_generic_close; } else dev_dbg(&port->dev, "%s - enabled reading\n", __func__); rc = klsi_105_get_line_state(port, &line_state); if (rc < 0) { retval = rc; goto err_disable_read; } spin_lock_irqsave(&priv->lock, flags); priv->line_state = line_state; spin_unlock_irqrestore(&priv->lock, flags); dev_dbg(&port->dev, "%s - read line state 0x%lx\n", __func__, line_state); return 0; err_disable_read: 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); err_generic_close: usb_serial_generic_close(port); err_free_cfg: kfree(cfg); return retval; } static void klsi_105_close(struct usb_serial_port *port) { int rc; /* 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, "failed to disable read: %d\n", rc); /* shutdown our bulk reads and writes */ usb_serial_generic_close(port); } /* 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_HDR_LEN 2 static int klsi_105_prepare_write_buffer(struct usb_serial_port *port, void *dest, size_t size) { unsigned char *buf = dest; int count; count = kfifo_out_locked(&port->write_fifo, buf + KLSI_HDR_LEN, size, &port->lock); put_unaligned_le16(count, buf); return count + KLSI_HDR_LEN; } /* 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 = urb->context; unsigned char *data = urb->transfer_buffer; unsigned len; /* empty urbs seem to happen, we ignore them */ if (!urb->actual_length) return; if (urb->actual_length <= KLSI_HDR_LEN) { dev_dbg(&port->dev, "%s - malformed packet\n", __func__); return; } len = get_unaligned_le16(data); if (len > urb->actual_length - KLSI_HDR_LEN) { dev_dbg(&port->dev, "%s - packet length mismatch\n", __func__); len = urb->actual_length - KLSI_HDR_LEN; } tty_insert_flip_string(&port->port, data + KLSI_HDR_LEN, len); tty_flip_buffer_push(&port->port); } 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); struct device *dev = &port->dev; unsigned int iflag = tty->termios.c_iflag; unsigned int old_iflag = old_termios->c_iflag; unsigned int cflag = tty->termios.c_cflag; unsigned int old_cflag = old_termios->c_cflag; struct klsi_105_port_settings *cfg; unsigned long flags; speed_t baud; cfg = kmalloc(sizeof(*cfg), GFP_KERNEL); if (!cfg) return; /* lock while we are modifying the settings */ spin_lock_irqsave(&priv->lock, flags); /* * Update baud rate */ baud = tty_get_baud_rate(tty); 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: dev_dbg(dev, "unsupported baudrate, using 9600\n"); priv->cfg.baudrate = kl5kusb105a_sio_b9600; baud = 9600; break; } /* * FIXME: implement B0 handling * * Maybe this should be simulated by sending read disable and read * enable messages? */ tty_encode_baud_rate(tty, baud, baud); if ((cflag & CSIZE) != (old_cflag & CSIZE)) { /* set the number of data bits */ switch (cflag & CSIZE) { case CS5: dev_dbg(dev, "%s - 5 bits/byte not supported\n", __func__); spin_unlock_irqrestore(&priv->lock, flags); goto err; case CS6: dev_dbg(dev, "%s - 6 bits/byte not supported\n", __func__); spin_unlock_irqrestore(&priv->lock, flags); goto err; case CS7: priv->cfg.databits = kl5kusb105a_dtb_7; break; case CS8: priv->cfg.databits = kl5kusb105a_dtb_8; break; default: dev_err(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)) { /* Not currently supported */ tty->termios.c_cflag &= ~(PARENB|PARODD|CSTOPB); } /* * 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)) { /* Not currently supported */ tty->termios.c_cflag &= ~CRTSCTS; } 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); } static int klsi_105_tiocmget(struct tty_struct *tty) { 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; rc = klsi_105_get_line_state(port, &line_state); if (rc < 0) { dev_err(&port->dev, "Reading line control failed (error = %d)\n", rc); /* better return value? EAGAIN? */ return rc; } spin_lock_irqsave(&priv->lock, flags); priv->line_state = line_state; spin_unlock_irqrestore(&priv->lock, flags); dev_dbg(&port->dev, "%s - read line state 0x%lx\n", __func__, line_state); return (int)line_state; } module_usb_serial_driver(serial_drivers, id_table); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL");
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