| /* |
| USB Driver for GSM modems |
| |
| Copyright (C) 2005 Matthias Urlichs <smurf@smurf.noris.de> |
| |
| This driver is free software; you can redistribute it and/or modify |
| it under the terms of Version 2 of the GNU General Public License as |
| published by the Free Software Foundation. |
| |
| Portions copied from the Keyspan driver by Hugh Blemings <hugh@blemings.org> |
| |
| History: see the git log. |
| |
| Work sponsored by: Sigos GmbH, Germany <info@sigos.de> |
| |
| This driver exists because the "normal" serial driver doesn't work too well |
| with GSM modems. Issues: |
| - data loss -- one single Receive URB is not nearly enough |
| - nonstandard flow (Option devices) control |
| - controlling the baud rate doesn't make sense |
| |
| This driver is named "option" because the most common device it's |
| used for is a PC-Card (with an internal OHCI-USB interface, behind |
| which the GSM interface sits), made by Option Inc. |
| |
| Some of the "one port" devices actually exhibit multiple USB instances |
| on the USB bus. This is not a bug, these ports are used for different |
| device features. |
| */ |
| |
| #define DRIVER_VERSION "v0.7.1" |
| #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>" |
| #define DRIVER_DESC "USB Driver for GSM modems" |
| |
| #include <linux/kernel.h> |
| #include <linux/jiffies.h> |
| #include <linux/errno.h> |
| #include <linux/tty.h> |
| #include <linux/tty_flip.h> |
| #include <linux/module.h> |
| #include <linux/bitops.h> |
| #include <linux/usb.h> |
| #include <linux/usb/serial.h> |
| |
| /* Function prototypes */ |
| static int option_open(struct usb_serial_port *port, struct file *filp); |
| static void option_close(struct usb_serial_port *port, struct file *filp); |
| static int option_startup(struct usb_serial *serial); |
| static void option_shutdown(struct usb_serial *serial); |
| static void option_rx_throttle(struct usb_serial_port *port); |
| static void option_rx_unthrottle(struct usb_serial_port *port); |
| static int option_write_room(struct usb_serial_port *port); |
| |
| static void option_instat_callback(struct urb *urb); |
| |
| static int option_write(struct usb_serial_port *port, |
| const unsigned char *buf, int count); |
| |
| static int option_chars_in_buffer(struct usb_serial_port *port); |
| static int option_ioctl(struct usb_serial_port *port, struct file *file, |
| unsigned int cmd, unsigned long arg); |
| static void option_set_termios(struct usb_serial_port *port, |
| struct ktermios *old); |
| static void option_break_ctl(struct usb_serial_port *port, int break_state); |
| static int option_tiocmget(struct usb_serial_port *port, struct file *file); |
| static int option_tiocmset(struct usb_serial_port *port, struct file *file, |
| unsigned int set, unsigned int clear); |
| static int option_send_setup(struct usb_serial_port *port); |
| |
| /* Vendor and product IDs */ |
| #define OPTION_VENDOR_ID 0x0AF0 |
| #define OPTION_PRODUCT_COLT 0x5000 |
| #define OPTION_PRODUCT_RICOLA 0x6000 |
| #define OPTION_PRODUCT_RICOLA_LIGHT 0x6100 |
| #define OPTION_PRODUCT_RICOLA_QUAD 0x6200 |
| #define OPTION_PRODUCT_RICOLA_QUAD_LIGHT 0x6300 |
| #define OPTION_PRODUCT_RICOLA_NDIS 0x6050 |
| #define OPTION_PRODUCT_RICOLA_NDIS_LIGHT 0x6150 |
| #define OPTION_PRODUCT_RICOLA_NDIS_QUAD 0x6250 |
| #define OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT 0x6350 |
| #define OPTION_PRODUCT_COBRA 0x6500 |
| #define OPTION_PRODUCT_COBRA_BUS 0x6501 |
| #define OPTION_PRODUCT_VIPER 0x6600 |
| #define OPTION_PRODUCT_VIPER_BUS 0x6601 |
| #define OPTION_PRODUCT_GT_MAX_READY 0x6701 |
| #define OPTION_PRODUCT_GT_MAX 0x6711 |
| #define OPTION_PRODUCT_FUJI_MODEM_LIGHT 0x6721 |
| #define OPTION_PRODUCT_FUJI_MODEM_GT 0x6741 |
| #define OPTION_PRODUCT_FUJI_MODEM_EX 0x6761 |
| #define OPTION_PRODUCT_FUJI_NETWORK_LIGHT 0x6731 |
| #define OPTION_PRODUCT_FUJI_NETWORK_GT 0x6751 |
| #define OPTION_PRODUCT_FUJI_NETWORK_EX 0x6771 |
| #define OPTION_PRODUCT_KOI_MODEM 0x6800 |
| #define OPTION_PRODUCT_KOI_NETWORK 0x6811 |
| #define OPTION_PRODUCT_SCORPION_MODEM 0x6901 |
| #define OPTION_PRODUCT_SCORPION_NETWORK 0x6911 |
| #define OPTION_PRODUCT_ETNA_MODEM 0x7001 |
| #define OPTION_PRODUCT_ETNA_NETWORK 0x7011 |
| #define OPTION_PRODUCT_ETNA_MODEM_LITE 0x7021 |
| #define OPTION_PRODUCT_ETNA_MODEM_GT 0x7041 |
| #define OPTION_PRODUCT_ETNA_MODEM_EX 0x7061 |
| #define OPTION_PRODUCT_ETNA_NETWORK_LITE 0x7031 |
| #define OPTION_PRODUCT_ETNA_NETWORK_GT 0x7051 |
| #define OPTION_PRODUCT_ETNA_NETWORK_EX 0x7071 |
| #define OPTION_PRODUCT_ETNA_KOI_MODEM 0x7100 |
| #define OPTION_PRODUCT_ETNA_KOI_NETWORK 0x7111 |
| |
| #define HUAWEI_VENDOR_ID 0x12D1 |
| #define HUAWEI_PRODUCT_E600 0x1001 |
| #define HUAWEI_PRODUCT_E220 0x1003 |
| #define HUAWEI_PRODUCT_E220BIS 0x1004 |
| |
| #define NOVATELWIRELESS_VENDOR_ID 0x1410 |
| #define DELL_VENDOR_ID 0x413C |
| |
| #define ANYDATA_VENDOR_ID 0x16d5 |
| #define ANYDATA_PRODUCT_ADU_E100A 0x6501 |
| #define ANYDATA_PRODUCT_ADU_500A 0x6502 |
| |
| #define BANDRICH_VENDOR_ID 0x1A8D |
| #define BANDRICH_PRODUCT_C100_1 0x1002 |
| #define BANDRICH_PRODUCT_C100_2 0x1003 |
| |
| static struct usb_device_id option_ids[] = { |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD_LIGHT) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_LIGHT) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA_BUS) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER_BUS) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX_READY) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_LIGHT) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_GT) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_EX) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_LIGHT) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_GT) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_EX) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_MODEM) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_NETWORK) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_MODEM) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_NETWORK) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_LITE) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_GT) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_EX) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_LITE) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_GT) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_EX) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_MODEM) }, |
| { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_NETWORK) }, |
| { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) }, |
| { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220, 0xff, 0xff, 0xff) }, |
| { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220BIS, 0xff, 0xff, 0xff) }, |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1100) }, /* Novatel Merlin XS620/S640 */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1110) }, /* Novatel Merlin S620 */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1120) }, /* Novatel Merlin EX720 */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1130) }, /* Novatel Merlin S720 */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1400) }, /* Novatel U730 */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1410) }, /* Novatel U740 */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1420) }, /* Novatel EU870 */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1430) }, /* Novatel Merlin XU870 HSDPA/3G */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2100) }, /* Novatel EV620 CDMA/EV-DO */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2110) }, /* Novatel Merlin ES620 / Merlin ES720 / Ovation U720 */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2130) }, /* Novatel Merlin ES620 SM Bus */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2410) }, /* Novatel EU740 */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x4100) }, /* Novatel U727 */ |
| { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x4400) }, /* Novatel MC950 */ |
| { USB_DEVICE(DELL_VENDOR_ID, 0x8114) }, /* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite EV620 CDMA/EV-DO */ |
| { USB_DEVICE(DELL_VENDOR_ID, 0x8115) }, /* Dell Wireless 5500 Mobile Broadband HSDPA Mini-Card == Novatel Expedite EU740 HSDPA/3G */ |
| { USB_DEVICE(DELL_VENDOR_ID, 0x8116) }, /* Dell Wireless 5505 Mobile Broadband HSDPA Mini-Card == Novatel Expedite EU740 HSDPA/3G */ |
| { USB_DEVICE(DELL_VENDOR_ID, 0x8117) }, /* Dell Wireless 5700 Mobile Broadband CDMA/EVDO ExpressCard == Novatel Merlin XV620 CDMA/EV-DO */ |
| { USB_DEVICE(DELL_VENDOR_ID, 0x8118) }, /* Dell Wireless 5510 Mobile Broadband HSDPA ExpressCard == Novatel Merlin XU870 HSDPA/3G */ |
| { USB_DEVICE(DELL_VENDOR_ID, 0x8128) }, /* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite E720 CDMA/EV-DO */ |
| { USB_DEVICE(DELL_VENDOR_ID, 0x8137) }, /* Dell Wireless HSDPA 5520 */ |
| { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_E100A) }, |
| { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_500A) }, |
| { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_1) }, |
| { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_2) }, |
| { } /* Terminating entry */ |
| }; |
| MODULE_DEVICE_TABLE(usb, option_ids); |
| |
| static struct usb_driver option_driver = { |
| .name = "option", |
| .probe = usb_serial_probe, |
| .disconnect = usb_serial_disconnect, |
| .id_table = option_ids, |
| .no_dynamic_id = 1, |
| }; |
| |
| /* The card has three separate interfaces, which the serial driver |
| * recognizes separately, thus num_port=1. |
| */ |
| |
| static struct usb_serial_driver option_1port_device = { |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = "option1", |
| }, |
| .description = "GSM modem (1-port)", |
| .usb_driver = &option_driver, |
| .id_table = option_ids, |
| .num_interrupt_in = NUM_DONT_CARE, |
| .num_bulk_in = NUM_DONT_CARE, |
| .num_bulk_out = NUM_DONT_CARE, |
| .num_ports = 1, |
| .open = option_open, |
| .close = option_close, |
| .write = option_write, |
| .write_room = option_write_room, |
| .chars_in_buffer = option_chars_in_buffer, |
| .throttle = option_rx_throttle, |
| .unthrottle = option_rx_unthrottle, |
| .ioctl = option_ioctl, |
| .set_termios = option_set_termios, |
| .break_ctl = option_break_ctl, |
| .tiocmget = option_tiocmget, |
| .tiocmset = option_tiocmset, |
| .attach = option_startup, |
| .shutdown = option_shutdown, |
| .read_int_callback = option_instat_callback, |
| }; |
| |
| #ifdef CONFIG_USB_DEBUG |
| static int debug; |
| #else |
| #define debug 0 |
| #endif |
| |
| /* per port private data */ |
| |
| #define N_IN_URB 4 |
| #define N_OUT_URB 1 |
| #define IN_BUFLEN 4096 |
| #define OUT_BUFLEN 128 |
| |
| struct option_port_private { |
| /* Input endpoints and buffer for this port */ |
| struct urb *in_urbs[N_IN_URB]; |
| char in_buffer[N_IN_URB][IN_BUFLEN]; |
| /* Output endpoints and buffer for this port */ |
| struct urb *out_urbs[N_OUT_URB]; |
| char out_buffer[N_OUT_URB][OUT_BUFLEN]; |
| unsigned long out_busy; /* Bit vector of URBs in use */ |
| |
| /* Settings for the port */ |
| int rts_state; /* Handshaking pins (outputs) */ |
| int dtr_state; |
| int cts_state; /* Handshaking pins (inputs) */ |
| int dsr_state; |
| int dcd_state; |
| int ri_state; |
| |
| unsigned long tx_start_time[N_OUT_URB]; |
| }; |
| |
| /* Functions used by new usb-serial code. */ |
| static int __init option_init(void) |
| { |
| int retval; |
| retval = usb_serial_register(&option_1port_device); |
| if (retval) |
| goto failed_1port_device_register; |
| retval = usb_register(&option_driver); |
| if (retval) |
| goto failed_driver_register; |
| |
| info(DRIVER_DESC ": " DRIVER_VERSION); |
| |
| return 0; |
| |
| failed_driver_register: |
| usb_serial_deregister (&option_1port_device); |
| failed_1port_device_register: |
| return retval; |
| } |
| |
| static void __exit option_exit(void) |
| { |
| usb_deregister (&option_driver); |
| usb_serial_deregister (&option_1port_device); |
| } |
| |
| module_init(option_init); |
| module_exit(option_exit); |
| |
| static void option_rx_throttle(struct usb_serial_port *port) |
| { |
| dbg("%s", __FUNCTION__); |
| } |
| |
| static void option_rx_unthrottle(struct usb_serial_port *port) |
| { |
| dbg("%s", __FUNCTION__); |
| } |
| |
| static void option_break_ctl(struct usb_serial_port *port, int break_state) |
| { |
| /* Unfortunately, I don't know how to send a break */ |
| dbg("%s", __FUNCTION__); |
| } |
| |
| static void option_set_termios(struct usb_serial_port *port, |
| struct ktermios *old_termios) |
| { |
| dbg("%s", __FUNCTION__); |
| /* Doesn't support option setting */ |
| tty_termios_copy_hw(port->tty->termios, old_termios); |
| option_send_setup(port); |
| } |
| |
| static int option_tiocmget(struct usb_serial_port *port, struct file *file) |
| { |
| unsigned int value; |
| struct option_port_private *portdata; |
| |
| portdata = usb_get_serial_port_data(port); |
| |
| value = ((portdata->rts_state) ? TIOCM_RTS : 0) | |
| ((portdata->dtr_state) ? TIOCM_DTR : 0) | |
| ((portdata->cts_state) ? TIOCM_CTS : 0) | |
| ((portdata->dsr_state) ? TIOCM_DSR : 0) | |
| ((portdata->dcd_state) ? TIOCM_CAR : 0) | |
| ((portdata->ri_state) ? TIOCM_RNG : 0); |
| |
| return value; |
| } |
| |
| static int option_tiocmset(struct usb_serial_port *port, struct file *file, |
| unsigned int set, unsigned int clear) |
| { |
| struct option_port_private *portdata; |
| |
| portdata = usb_get_serial_port_data(port); |
| |
| if (set & TIOCM_RTS) |
| portdata->rts_state = 1; |
| if (set & TIOCM_DTR) |
| portdata->dtr_state = 1; |
| |
| if (clear & TIOCM_RTS) |
| portdata->rts_state = 0; |
| if (clear & TIOCM_DTR) |
| portdata->dtr_state = 0; |
| return option_send_setup(port); |
| } |
| |
| static int option_ioctl(struct usb_serial_port *port, struct file *file, |
| unsigned int cmd, unsigned long arg) |
| { |
| return -ENOIOCTLCMD; |
| } |
| |
| /* Write */ |
| static int option_write(struct usb_serial_port *port, |
| const unsigned char *buf, int count) |
| { |
| struct option_port_private *portdata; |
| int i; |
| int left, todo; |
| struct urb *this_urb = NULL; /* spurious */ |
| int err; |
| |
| portdata = usb_get_serial_port_data(port); |
| |
| dbg("%s: write (%d chars)", __FUNCTION__, count); |
| |
| i = 0; |
| left = count; |
| for (i=0; left > 0 && i < N_OUT_URB; i++) { |
| todo = left; |
| if (todo > OUT_BUFLEN) |
| todo = OUT_BUFLEN; |
| |
| this_urb = portdata->out_urbs[i]; |
| if (test_and_set_bit(i, &portdata->out_busy)) { |
| if (time_before(jiffies, |
| portdata->tx_start_time[i] + 10 * HZ)) |
| continue; |
| usb_unlink_urb(this_urb); |
| continue; |
| } |
| if (this_urb->status != 0) |
| dbg("usb_write %p failed (err=%d)", |
| this_urb, this_urb->status); |
| |
| dbg("%s: endpoint %d buf %d", __FUNCTION__, |
| usb_pipeendpoint(this_urb->pipe), i); |
| |
| /* send the data */ |
| memcpy (this_urb->transfer_buffer, buf, todo); |
| this_urb->transfer_buffer_length = todo; |
| |
| this_urb->dev = port->serial->dev; |
| err = usb_submit_urb(this_urb, GFP_ATOMIC); |
| if (err) { |
| dbg("usb_submit_urb %p (write bulk) failed " |
| "(%d, has %d)", this_urb, |
| err, this_urb->status); |
| clear_bit(i, &portdata->out_busy); |
| continue; |
| } |
| portdata->tx_start_time[i] = jiffies; |
| buf += todo; |
| left -= todo; |
| } |
| |
| count -= left; |
| dbg("%s: wrote (did %d)", __FUNCTION__, count); |
| return count; |
| } |
| |
| static void option_indat_callback(struct urb *urb) |
| { |
| int err; |
| int endpoint; |
| struct usb_serial_port *port; |
| struct tty_struct *tty; |
| unsigned char *data = urb->transfer_buffer; |
| int status = urb->status; |
| |
| dbg("%s: %p", __FUNCTION__, urb); |
| |
| endpoint = usb_pipeendpoint(urb->pipe); |
| port = (struct usb_serial_port *) urb->context; |
| |
| if (status) { |
| dbg("%s: nonzero status: %d on endpoint %02x.", |
| __FUNCTION__, status, endpoint); |
| } else { |
| tty = port->tty; |
| if (urb->actual_length) { |
| tty_buffer_request_room(tty, urb->actual_length); |
| tty_insert_flip_string(tty, data, urb->actual_length); |
| tty_flip_buffer_push(tty); |
| } else { |
| dbg("%s: empty read urb received", __FUNCTION__); |
| } |
| |
| /* Resubmit urb so we continue receiving */ |
| if (port->open_count && status != -ESHUTDOWN) { |
| err = usb_submit_urb(urb, GFP_ATOMIC); |
| if (err) |
| printk(KERN_ERR "%s: resubmit read urb failed. " |
| "(%d)", __FUNCTION__, err); |
| } |
| } |
| return; |
| } |
| |
| static void option_outdat_callback(struct urb *urb) |
| { |
| struct usb_serial_port *port; |
| struct option_port_private *portdata; |
| int i; |
| |
| dbg("%s", __FUNCTION__); |
| |
| port = (struct usb_serial_port *) urb->context; |
| |
| usb_serial_port_softint(port); |
| |
| portdata = usb_get_serial_port_data(port); |
| for (i = 0; i < N_OUT_URB; ++i) { |
| if (portdata->out_urbs[i] == urb) { |
| smp_mb__before_clear_bit(); |
| clear_bit(i, &portdata->out_busy); |
| break; |
| } |
| } |
| } |
| |
| static void option_instat_callback(struct urb *urb) |
| { |
| int err; |
| int status = urb->status; |
| struct usb_serial_port *port = (struct usb_serial_port *) urb->context; |
| struct option_port_private *portdata = usb_get_serial_port_data(port); |
| struct usb_serial *serial = port->serial; |
| |
| dbg("%s", __FUNCTION__); |
| dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata); |
| |
| if (status == 0) { |
| struct usb_ctrlrequest *req_pkt = |
| (struct usb_ctrlrequest *)urb->transfer_buffer; |
| |
| if (!req_pkt) { |
| dbg("%s: NULL req_pkt\n", __FUNCTION__); |
| return; |
| } |
| if ((req_pkt->bRequestType == 0xA1) && |
| (req_pkt->bRequest == 0x20)) { |
| int old_dcd_state; |
| unsigned char signals = *((unsigned char *) |
| urb->transfer_buffer + |
| sizeof(struct usb_ctrlrequest)); |
| |
| dbg("%s: signal x%x", __FUNCTION__, signals); |
| |
| old_dcd_state = portdata->dcd_state; |
| portdata->cts_state = 1; |
| portdata->dcd_state = ((signals & 0x01) ? 1 : 0); |
| portdata->dsr_state = ((signals & 0x02) ? 1 : 0); |
| portdata->ri_state = ((signals & 0x08) ? 1 : 0); |
| |
| if (port->tty && !C_CLOCAL(port->tty) && |
| old_dcd_state && !portdata->dcd_state) |
| tty_hangup(port->tty); |
| } else { |
| dbg("%s: type %x req %x", __FUNCTION__, |
| req_pkt->bRequestType,req_pkt->bRequest); |
| } |
| } else |
| dbg("%s: error %d", __FUNCTION__, status); |
| |
| /* Resubmit urb so we continue receiving IRQ data */ |
| if (status != -ESHUTDOWN) { |
| urb->dev = serial->dev; |
| err = usb_submit_urb(urb, GFP_ATOMIC); |
| if (err) |
| dbg("%s: resubmit intr urb failed. (%d)", |
| __FUNCTION__, err); |
| } |
| } |
| |
| static int option_write_room(struct usb_serial_port *port) |
| { |
| struct option_port_private *portdata; |
| int i; |
| int data_len = 0; |
| struct urb *this_urb; |
| |
| portdata = usb_get_serial_port_data(port); |
| |
| for (i=0; i < N_OUT_URB; i++) { |
| this_urb = portdata->out_urbs[i]; |
| if (this_urb && !test_bit(i, &portdata->out_busy)) |
| data_len += OUT_BUFLEN; |
| } |
| |
| dbg("%s: %d", __FUNCTION__, data_len); |
| return data_len; |
| } |
| |
| static int option_chars_in_buffer(struct usb_serial_port *port) |
| { |
| struct option_port_private *portdata; |
| int i; |
| int data_len = 0; |
| struct urb *this_urb; |
| |
| portdata = usb_get_serial_port_data(port); |
| |
| for (i=0; i < N_OUT_URB; i++) { |
| this_urb = portdata->out_urbs[i]; |
| if (this_urb && test_bit(i, &portdata->out_busy)) |
| data_len += this_urb->transfer_buffer_length; |
| } |
| dbg("%s: %d", __FUNCTION__, data_len); |
| return data_len; |
| } |
| |
| static int option_open(struct usb_serial_port *port, struct file *filp) |
| { |
| struct option_port_private *portdata; |
| struct usb_serial *serial = port->serial; |
| int i, err; |
| struct urb *urb; |
| |
| portdata = usb_get_serial_port_data(port); |
| |
| dbg("%s", __FUNCTION__); |
| |
| /* Set some sane defaults */ |
| portdata->rts_state = 1; |
| portdata->dtr_state = 1; |
| |
| /* Reset low level data toggle and start reading from endpoints */ |
| for (i = 0; i < N_IN_URB; i++) { |
| urb = portdata->in_urbs[i]; |
| if (! urb) |
| continue; |
| if (urb->dev != serial->dev) { |
| dbg("%s: dev %p != %p", __FUNCTION__, |
| urb->dev, serial->dev); |
| continue; |
| } |
| |
| /* |
| * make sure endpoint data toggle is synchronized with the |
| * device |
| */ |
| usb_clear_halt(urb->dev, urb->pipe); |
| |
| err = usb_submit_urb(urb, GFP_KERNEL); |
| if (err) { |
| dbg("%s: submit urb %d failed (%d) %d", |
| __FUNCTION__, i, err, |
| urb->transfer_buffer_length); |
| } |
| } |
| |
| /* Reset low level data toggle on out endpoints */ |
| for (i = 0; i < N_OUT_URB; i++) { |
| urb = portdata->out_urbs[i]; |
| if (! urb) |
| continue; |
| urb->dev = serial->dev; |
| /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), |
| usb_pipeout(urb->pipe), 0); */ |
| } |
| |
| port->tty->low_latency = 1; |
| |
| option_send_setup(port); |
| |
| return (0); |
| } |
| |
| static void option_close(struct usb_serial_port *port, struct file *filp) |
| { |
| int i; |
| struct usb_serial *serial = port->serial; |
| struct option_port_private *portdata; |
| |
| dbg("%s", __FUNCTION__); |
| portdata = usb_get_serial_port_data(port); |
| |
| portdata->rts_state = 0; |
| portdata->dtr_state = 0; |
| |
| if (serial->dev) { |
| option_send_setup(port); |
| |
| /* Stop reading/writing urbs */ |
| for (i = 0; i < N_IN_URB; i++) |
| usb_kill_urb(portdata->in_urbs[i]); |
| for (i = 0; i < N_OUT_URB; i++) |
| usb_kill_urb(portdata->out_urbs[i]); |
| } |
| port->tty = NULL; |
| } |
| |
| /* Helper functions used by option_setup_urbs */ |
| static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint, |
| int dir, void *ctx, char *buf, int len, |
| void (*callback)(struct urb *)) |
| { |
| struct urb *urb; |
| |
| if (endpoint == -1) |
| return NULL; /* endpoint not needed */ |
| |
| urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ |
| if (urb == NULL) { |
| dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint); |
| return NULL; |
| } |
| |
| /* Fill URB using supplied data. */ |
| usb_fill_bulk_urb(urb, serial->dev, |
| usb_sndbulkpipe(serial->dev, endpoint) | dir, |
| buf, len, callback, ctx); |
| |
| return urb; |
| } |
| |
| /* Setup urbs */ |
| static void option_setup_urbs(struct usb_serial *serial) |
| { |
| int i,j; |
| struct usb_serial_port *port; |
| struct option_port_private *portdata; |
| |
| dbg("%s", __FUNCTION__); |
| |
| for (i = 0; i < serial->num_ports; i++) { |
| port = serial->port[i]; |
| portdata = usb_get_serial_port_data(port); |
| |
| /* Do indat endpoints first */ |
| for (j = 0; j < N_IN_URB; ++j) { |
| portdata->in_urbs[j] = option_setup_urb (serial, |
| port->bulk_in_endpointAddress, USB_DIR_IN, port, |
| portdata->in_buffer[j], IN_BUFLEN, option_indat_callback); |
| } |
| |
| /* outdat endpoints */ |
| for (j = 0; j < N_OUT_URB; ++j) { |
| portdata->out_urbs[j] = option_setup_urb (serial, |
| port->bulk_out_endpointAddress, USB_DIR_OUT, port, |
| portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback); |
| } |
| } |
| } |
| |
| static int option_send_setup(struct usb_serial_port *port) |
| { |
| struct usb_serial *serial = port->serial; |
| struct option_port_private *portdata; |
| |
| dbg("%s", __FUNCTION__); |
| |
| if (port->number != 0) |
| return 0; |
| |
| portdata = usb_get_serial_port_data(port); |
| |
| if (port->tty) { |
| int val = 0; |
| if (portdata->dtr_state) |
| val |= 0x01; |
| if (portdata->rts_state) |
| val |= 0x02; |
| |
| return usb_control_msg(serial->dev, |
| usb_rcvctrlpipe(serial->dev, 0), |
| 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT); |
| } |
| |
| return 0; |
| } |
| |
| static int option_startup(struct usb_serial *serial) |
| { |
| int i, err; |
| struct usb_serial_port *port; |
| struct option_port_private *portdata; |
| |
| dbg("%s", __FUNCTION__); |
| |
| /* Now setup per port private data */ |
| for (i = 0; i < serial->num_ports; i++) { |
| port = serial->port[i]; |
| portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); |
| if (!portdata) { |
| dbg("%s: kmalloc for option_port_private (%d) failed!.", |
| __FUNCTION__, i); |
| return (1); |
| } |
| |
| usb_set_serial_port_data(port, portdata); |
| |
| if (! port->interrupt_in_urb) |
| continue; |
| err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
| if (err) |
| dbg("%s: submit irq_in urb failed %d", |
| __FUNCTION__, err); |
| } |
| |
| option_setup_urbs(serial); |
| |
| return (0); |
| } |
| |
| static void option_shutdown(struct usb_serial *serial) |
| { |
| int i, j; |
| struct usb_serial_port *port; |
| struct option_port_private *portdata; |
| |
| dbg("%s", __FUNCTION__); |
| |
| /* Stop reading/writing urbs */ |
| for (i = 0; i < serial->num_ports; ++i) { |
| port = serial->port[i]; |
| portdata = usb_get_serial_port_data(port); |
| for (j = 0; j < N_IN_URB; j++) |
| usb_kill_urb(portdata->in_urbs[j]); |
| for (j = 0; j < N_OUT_URB; j++) |
| usb_kill_urb(portdata->out_urbs[j]); |
| } |
| |
| /* Now free them */ |
| for (i = 0; i < serial->num_ports; ++i) { |
| port = serial->port[i]; |
| portdata = usb_get_serial_port_data(port); |
| |
| for (j = 0; j < N_IN_URB; j++) { |
| if (portdata->in_urbs[j]) { |
| usb_free_urb(portdata->in_urbs[j]); |
| portdata->in_urbs[j] = NULL; |
| } |
| } |
| for (j = 0; j < N_OUT_URB; j++) { |
| if (portdata->out_urbs[j]) { |
| usb_free_urb(portdata->out_urbs[j]); |
| portdata->out_urbs[j] = NULL; |
| } |
| } |
| } |
| |
| /* Now free per port private data */ |
| for (i = 0; i < serial->num_ports; i++) { |
| port = serial->port[i]; |
| kfree(usb_get_serial_port_data(port)); |
| } |
| } |
| |
| MODULE_AUTHOR(DRIVER_AUTHOR); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_VERSION(DRIVER_VERSION); |
| MODULE_LICENSE("GPL"); |
| |
| #ifdef CONFIG_USB_DEBUG |
| module_param(debug, bool, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(debug, "Debug messages"); |
| #endif |
| |