| /* vi: ts=8 sw=8 |
| * |
| * TI 3410/5052 USB Serial Driver |
| * |
| * Copyright (C) 2004 Texas Instruments |
| * |
| * This driver is based on the Linux io_ti driver, which is |
| * Copyright (C) 2000-2002 Inside Out Networks |
| * Copyright (C) 2001-2002 Greg Kroah-Hartman |
| * |
| * 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. |
| * |
| * For questions or problems with this driver, contact Texas Instruments |
| * technical support, or Al Borchers <alborchers@steinerpoint.com>, or |
| * Peter Berger <pberger@brimson.com>. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/firmware.h> |
| #include <linux/init.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/spinlock.h> |
| #include <linux/ioctl.h> |
| #include <linux/serial.h> |
| #include <linux/kfifo.h> |
| #include <linux/mutex.h> |
| #include <linux/uaccess.h> |
| #include <linux/usb.h> |
| #include <linux/usb/serial.h> |
| |
| #include "ti_usb_3410_5052.h" |
| |
| /* Defines */ |
| |
| #define TI_DRIVER_VERSION "v0.10" |
| #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>" |
| #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver" |
| |
| #define TI_FIRMWARE_BUF_SIZE 16284 |
| |
| #define TI_WRITE_BUF_SIZE 1024 |
| |
| #define TI_TRANSFER_TIMEOUT 2 |
| |
| #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */ |
| |
| /* supported setserial flags */ |
| #define TI_SET_SERIAL_FLAGS 0 |
| |
| /* read urb states */ |
| #define TI_READ_URB_RUNNING 0 |
| #define TI_READ_URB_STOPPING 1 |
| #define TI_READ_URB_STOPPED 2 |
| |
| #define TI_EXTRA_VID_PID_COUNT 5 |
| |
| |
| /* Structures */ |
| |
| struct ti_port { |
| int tp_is_open; |
| __u8 tp_msr; |
| __u8 tp_lsr; |
| __u8 tp_shadow_mcr; |
| __u8 tp_uart_mode; /* 232 or 485 modes */ |
| unsigned int tp_uart_base_addr; |
| int tp_flags; |
| int tp_closing_wait;/* in .01 secs */ |
| struct async_icount tp_icount; |
| wait_queue_head_t tp_msr_wait; /* wait for msr change */ |
| wait_queue_head_t tp_write_wait; |
| struct ti_device *tp_tdev; |
| struct usb_serial_port *tp_port; |
| spinlock_t tp_lock; |
| int tp_read_urb_state; |
| int tp_write_urb_in_use; |
| struct kfifo write_fifo; |
| }; |
| |
| struct ti_device { |
| struct mutex td_open_close_lock; |
| int td_open_port_count; |
| struct usb_serial *td_serial; |
| int td_is_3410; |
| int td_urb_error; |
| }; |
| |
| |
| /* Function Declarations */ |
| |
| static int ti_startup(struct usb_serial *serial); |
| static void ti_release(struct usb_serial *serial); |
| static int ti_open(struct tty_struct *tty, struct usb_serial_port *port); |
| static void ti_close(struct usb_serial_port *port); |
| static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, |
| const unsigned char *data, int count); |
| static int ti_write_room(struct tty_struct *tty); |
| static int ti_chars_in_buffer(struct tty_struct *tty); |
| static void ti_throttle(struct tty_struct *tty); |
| static void ti_unthrottle(struct tty_struct *tty); |
| static int ti_ioctl(struct tty_struct *tty, |
| unsigned int cmd, unsigned long arg); |
| static int ti_get_icount(struct tty_struct *tty, |
| struct serial_icounter_struct *icount); |
| static void ti_set_termios(struct tty_struct *tty, |
| struct usb_serial_port *port, struct ktermios *old_termios); |
| static int ti_tiocmget(struct tty_struct *tty); |
| static int ti_tiocmset(struct tty_struct *tty, |
| unsigned int set, unsigned int clear); |
| static void ti_break(struct tty_struct *tty, int break_state); |
| static void ti_interrupt_callback(struct urb *urb); |
| static void ti_bulk_in_callback(struct urb *urb); |
| static void ti_bulk_out_callback(struct urb *urb); |
| |
| static void ti_recv(struct device *dev, struct tty_struct *tty, |
| unsigned char *data, int length); |
| static void ti_send(struct ti_port *tport); |
| static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); |
| static int ti_get_lsr(struct ti_port *tport); |
| static int ti_get_serial_info(struct ti_port *tport, |
| struct serial_struct __user *ret_arg); |
| static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, |
| struct serial_struct __user *new_arg); |
| static void ti_handle_new_msr(struct ti_port *tport, __u8 msr); |
| |
| static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush); |
| |
| static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); |
| static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); |
| |
| static int ti_command_out_sync(struct ti_device *tdev, __u8 command, |
| __u16 moduleid, __u16 value, __u8 *data, int size); |
| static int ti_command_in_sync(struct ti_device *tdev, __u8 command, |
| __u16 moduleid, __u16 value, __u8 *data, int size); |
| |
| static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev, |
| unsigned long addr, __u8 mask, __u8 byte); |
| |
| static int ti_download_firmware(struct ti_device *tdev); |
| |
| |
| /* Data */ |
| |
| /* module parameters */ |
| static int closing_wait = TI_DEFAULT_CLOSING_WAIT; |
| static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT]; |
| static unsigned int vendor_3410_count; |
| static ushort product_3410[TI_EXTRA_VID_PID_COUNT]; |
| static unsigned int product_3410_count; |
| static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT]; |
| static unsigned int vendor_5052_count; |
| static ushort product_5052[TI_EXTRA_VID_PID_COUNT]; |
| static unsigned int product_5052_count; |
| |
| /* supported devices */ |
| /* the array dimension is the number of default entries plus */ |
| /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */ |
| /* null entry */ |
| static struct usb_device_id ti_id_table_3410[15+TI_EXTRA_VID_PID_COUNT+1] = { |
| { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, |
| { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, |
| { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, |
| { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, |
| { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, |
| { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, |
| { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, |
| }; |
| |
| static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = { |
| { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, |
| { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, |
| { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, |
| { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, |
| }; |
| |
| static struct usb_device_id ti_id_table_combined[19+2*TI_EXTRA_VID_PID_COUNT+1] = { |
| { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, |
| { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, |
| { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, |
| { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, |
| { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, |
| { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, |
| { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, |
| { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, |
| { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, |
| { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, |
| { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, |
| { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, |
| { } |
| }; |
| |
| static struct usb_serial_driver ti_1port_device = { |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = "ti_usb_3410_5052_1", |
| }, |
| .description = "TI USB 3410 1 port adapter", |
| .id_table = ti_id_table_3410, |
| .num_ports = 1, |
| .attach = ti_startup, |
| .release = ti_release, |
| .open = ti_open, |
| .close = ti_close, |
| .write = ti_write, |
| .write_room = ti_write_room, |
| .chars_in_buffer = ti_chars_in_buffer, |
| .throttle = ti_throttle, |
| .unthrottle = ti_unthrottle, |
| .ioctl = ti_ioctl, |
| .set_termios = ti_set_termios, |
| .tiocmget = ti_tiocmget, |
| .tiocmset = ti_tiocmset, |
| .get_icount = ti_get_icount, |
| .break_ctl = ti_break, |
| .read_int_callback = ti_interrupt_callback, |
| .read_bulk_callback = ti_bulk_in_callback, |
| .write_bulk_callback = ti_bulk_out_callback, |
| }; |
| |
| static struct usb_serial_driver ti_2port_device = { |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = "ti_usb_3410_5052_2", |
| }, |
| .description = "TI USB 5052 2 port adapter", |
| .id_table = ti_id_table_5052, |
| .num_ports = 2, |
| .attach = ti_startup, |
| .release = ti_release, |
| .open = ti_open, |
| .close = ti_close, |
| .write = ti_write, |
| .write_room = ti_write_room, |
| .chars_in_buffer = ti_chars_in_buffer, |
| .throttle = ti_throttle, |
| .unthrottle = ti_unthrottle, |
| .ioctl = ti_ioctl, |
| .set_termios = ti_set_termios, |
| .tiocmget = ti_tiocmget, |
| .tiocmset = ti_tiocmset, |
| .get_icount = ti_get_icount, |
| .break_ctl = ti_break, |
| .read_int_callback = ti_interrupt_callback, |
| .read_bulk_callback = ti_bulk_in_callback, |
| .write_bulk_callback = ti_bulk_out_callback, |
| }; |
| |
| static struct usb_serial_driver * const serial_drivers[] = { |
| &ti_1port_device, &ti_2port_device, NULL |
| }; |
| |
| /* Module */ |
| |
| MODULE_AUTHOR(TI_DRIVER_AUTHOR); |
| MODULE_DESCRIPTION(TI_DRIVER_DESC); |
| MODULE_VERSION(TI_DRIVER_VERSION); |
| MODULE_LICENSE("GPL"); |
| |
| MODULE_FIRMWARE("ti_3410.fw"); |
| MODULE_FIRMWARE("ti_5052.fw"); |
| MODULE_FIRMWARE("mts_cdma.fw"); |
| MODULE_FIRMWARE("mts_gsm.fw"); |
| MODULE_FIRMWARE("mts_edge.fw"); |
| MODULE_FIRMWARE("mts_mt9234mu.fw"); |
| MODULE_FIRMWARE("mts_mt9234zba.fw"); |
| |
| module_param(closing_wait, int, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(closing_wait, |
| "Maximum wait for data to drain in close, in .01 secs, default is 4000"); |
| |
| module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO); |
| MODULE_PARM_DESC(vendor_3410, |
| "Vendor ids for 3410 based devices, 1-5 short integers"); |
| module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO); |
| MODULE_PARM_DESC(product_3410, |
| "Product ids for 3410 based devices, 1-5 short integers"); |
| module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO); |
| MODULE_PARM_DESC(vendor_5052, |
| "Vendor ids for 5052 based devices, 1-5 short integers"); |
| module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO); |
| MODULE_PARM_DESC(product_5052, |
| "Product ids for 5052 based devices, 1-5 short integers"); |
| |
| MODULE_DEVICE_TABLE(usb, ti_id_table_combined); |
| |
| |
| /* Functions */ |
| |
| static int __init ti_init(void) |
| { |
| int i, j, c; |
| int ret; |
| |
| /* insert extra vendor and product ids */ |
| c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1; |
| j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1; |
| for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) { |
| ti_id_table_3410[j].idVendor = vendor_3410[i]; |
| ti_id_table_3410[j].idProduct = product_3410[i]; |
| ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; |
| ti_id_table_combined[c].idVendor = vendor_3410[i]; |
| ti_id_table_combined[c].idProduct = product_3410[i]; |
| ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; |
| } |
| j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1; |
| for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) { |
| ti_id_table_5052[j].idVendor = vendor_5052[i]; |
| ti_id_table_5052[j].idProduct = product_5052[i]; |
| ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; |
| ti_id_table_combined[c].idVendor = vendor_5052[i]; |
| ti_id_table_combined[c].idProduct = product_5052[i]; |
| ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; |
| } |
| |
| ret = usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME, ti_id_table_combined); |
| if (ret == 0) |
| printk(KERN_INFO KBUILD_MODNAME ": " TI_DRIVER_VERSION ":" |
| TI_DRIVER_DESC "\n"); |
| return ret; |
| } |
| |
| static void __exit ti_exit(void) |
| { |
| usb_serial_deregister_drivers(serial_drivers); |
| } |
| |
| module_init(ti_init); |
| module_exit(ti_exit); |
| |
| |
| static int ti_startup(struct usb_serial *serial) |
| { |
| struct ti_device *tdev; |
| struct ti_port *tport; |
| struct usb_device *dev = serial->dev; |
| int status; |
| int i; |
| |
| |
| dev_dbg(&dev->dev, |
| "%s - product 0x%4X, num configurations %d, configuration value %d", |
| __func__, le16_to_cpu(dev->descriptor.idProduct), |
| dev->descriptor.bNumConfigurations, |
| dev->actconfig->desc.bConfigurationValue); |
| |
| /* create device structure */ |
| tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); |
| if (tdev == NULL) { |
| dev_err(&dev->dev, "%s - out of memory\n", __func__); |
| return -ENOMEM; |
| } |
| mutex_init(&tdev->td_open_close_lock); |
| tdev->td_serial = serial; |
| usb_set_serial_data(serial, tdev); |
| |
| /* determine device type */ |
| if (usb_match_id(serial->interface, ti_id_table_3410)) |
| tdev->td_is_3410 = 1; |
| dev_dbg(&dev->dev, "%s - device type is %s\n", __func__, |
| tdev->td_is_3410 ? "3410" : "5052"); |
| |
| /* if we have only 1 configuration, download firmware */ |
| if (dev->descriptor.bNumConfigurations == 1) { |
| status = ti_download_firmware(tdev); |
| |
| if (status != 0) |
| goto free_tdev; |
| |
| /* 3410 must be reset, 5052 resets itself */ |
| if (tdev->td_is_3410) { |
| msleep_interruptible(100); |
| usb_reset_device(dev); |
| } |
| |
| status = -ENODEV; |
| goto free_tdev; |
| } |
| |
| /* the second configuration must be set */ |
| if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { |
| status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); |
| status = status ? status : -ENODEV; |
| goto free_tdev; |
| } |
| |
| /* set up port structures */ |
| for (i = 0; i < serial->num_ports; ++i) { |
| tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL); |
| if (tport == NULL) { |
| dev_err(&dev->dev, "%s - out of memory\n", __func__); |
| status = -ENOMEM; |
| goto free_tports; |
| } |
| spin_lock_init(&tport->tp_lock); |
| tport->tp_uart_base_addr = (i == 0 ? |
| TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR); |
| tport->tp_closing_wait = closing_wait; |
| init_waitqueue_head(&tport->tp_msr_wait); |
| init_waitqueue_head(&tport->tp_write_wait); |
| if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE, |
| GFP_KERNEL)) { |
| dev_err(&dev->dev, "%s - out of memory\n", __func__); |
| kfree(tport); |
| status = -ENOMEM; |
| goto free_tports; |
| } |
| tport->tp_port = serial->port[i]; |
| tport->tp_tdev = tdev; |
| usb_set_serial_port_data(serial->port[i], tport); |
| tport->tp_uart_mode = 0; /* default is RS232 */ |
| } |
| |
| return 0; |
| |
| free_tports: |
| for (--i; i >= 0; --i) { |
| tport = usb_get_serial_port_data(serial->port[i]); |
| kfifo_free(&tport->write_fifo); |
| kfree(tport); |
| usb_set_serial_port_data(serial->port[i], NULL); |
| } |
| free_tdev: |
| kfree(tdev); |
| usb_set_serial_data(serial, NULL); |
| return status; |
| } |
| |
| |
| static void ti_release(struct usb_serial *serial) |
| { |
| int i; |
| struct ti_device *tdev = usb_get_serial_data(serial); |
| struct ti_port *tport; |
| |
| for (i = 0; i < serial->num_ports; ++i) { |
| tport = usb_get_serial_port_data(serial->port[i]); |
| if (tport) { |
| kfifo_free(&tport->write_fifo); |
| kfree(tport); |
| } |
| } |
| |
| kfree(tdev); |
| } |
| |
| |
| static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) |
| { |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| struct ti_device *tdev; |
| struct usb_device *dev; |
| struct urb *urb; |
| int port_number; |
| int status; |
| __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS | |
| TI_PIPE_TIMEOUT_ENABLE | |
| (TI_TRANSFER_TIMEOUT << 2)); |
| |
| if (tport == NULL) |
| return -ENODEV; |
| |
| dev = port->serial->dev; |
| tdev = tport->tp_tdev; |
| |
| /* only one open on any port on a device at a time */ |
| if (mutex_lock_interruptible(&tdev->td_open_close_lock)) |
| return -ERESTARTSYS; |
| |
| port_number = port->number - port->serial->minor; |
| |
| memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount)); |
| |
| tport->tp_msr = 0; |
| tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); |
| |
| /* start interrupt urb the first time a port is opened on this device */ |
| if (tdev->td_open_port_count == 0) { |
| dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__); |
| urb = tdev->td_serial->port[0]->interrupt_in_urb; |
| if (!urb) { |
| dev_err(&port->dev, "%s - no interrupt urb\n", __func__); |
| status = -EINVAL; |
| goto release_lock; |
| } |
| urb->context = tdev; |
| status = usb_submit_urb(urb, GFP_KERNEL); |
| if (status) { |
| dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status); |
| goto release_lock; |
| } |
| } |
| |
| if (tty) |
| ti_set_termios(tty, port, tty->termios); |
| |
| dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __func__); |
| status = ti_command_out_sync(tdev, TI_OPEN_PORT, |
| (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); |
| if (status) { |
| dev_err(&port->dev, "%s - cannot send open command, %d\n", |
| __func__, status); |
| goto unlink_int_urb; |
| } |
| |
| dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __func__); |
| status = ti_command_out_sync(tdev, TI_START_PORT, |
| (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); |
| if (status) { |
| dev_err(&port->dev, "%s - cannot send start command, %d\n", |
| __func__, status); |
| goto unlink_int_urb; |
| } |
| |
| dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __func__); |
| status = ti_command_out_sync(tdev, TI_PURGE_PORT, |
| (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0); |
| if (status) { |
| dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", |
| __func__, status); |
| goto unlink_int_urb; |
| } |
| status = ti_command_out_sync(tdev, TI_PURGE_PORT, |
| (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0); |
| if (status) { |
| dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", |
| __func__, status); |
| goto unlink_int_urb; |
| } |
| |
| /* reset the data toggle on the bulk endpoints to work around bug in |
| * host controllers where things get out of sync some times */ |
| usb_clear_halt(dev, port->write_urb->pipe); |
| usb_clear_halt(dev, port->read_urb->pipe); |
| |
| if (tty) |
| ti_set_termios(tty, port, tty->termios); |
| |
| dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __func__); |
| status = ti_command_out_sync(tdev, TI_OPEN_PORT, |
| (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); |
| if (status) { |
| dev_err(&port->dev, "%s - cannot send open command (2), %d\n", |
| __func__, status); |
| goto unlink_int_urb; |
| } |
| |
| dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __func__); |
| status = ti_command_out_sync(tdev, TI_START_PORT, |
| (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); |
| if (status) { |
| dev_err(&port->dev, "%s - cannot send start command (2), %d\n", |
| __func__, status); |
| goto unlink_int_urb; |
| } |
| |
| /* start read urb */ |
| dev_dbg(&port->dev, "%s - start read urb\n", __func__); |
| urb = port->read_urb; |
| if (!urb) { |
| dev_err(&port->dev, "%s - no read urb\n", __func__); |
| status = -EINVAL; |
| goto unlink_int_urb; |
| } |
| tport->tp_read_urb_state = TI_READ_URB_RUNNING; |
| urb->context = tport; |
| status = usb_submit_urb(urb, GFP_KERNEL); |
| if (status) { |
| dev_err(&port->dev, "%s - submit read urb failed, %d\n", |
| __func__, status); |
| goto unlink_int_urb; |
| } |
| |
| tport->tp_is_open = 1; |
| ++tdev->td_open_port_count; |
| |
| goto release_lock; |
| |
| unlink_int_urb: |
| if (tdev->td_open_port_count == 0) |
| usb_kill_urb(port->serial->port[0]->interrupt_in_urb); |
| release_lock: |
| mutex_unlock(&tdev->td_open_close_lock); |
| dev_dbg(&port->dev, "%s - exit %d\n", __func__, status); |
| return status; |
| } |
| |
| |
| static void ti_close(struct usb_serial_port *port) |
| { |
| struct ti_device *tdev; |
| struct ti_port *tport; |
| int port_number; |
| int status; |
| int do_unlock; |
| |
| tdev = usb_get_serial_data(port->serial); |
| tport = usb_get_serial_port_data(port); |
| if (tdev == NULL || tport == NULL) |
| return; |
| |
| tport->tp_is_open = 0; |
| |
| ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1); |
| |
| usb_kill_urb(port->read_urb); |
| usb_kill_urb(port->write_urb); |
| tport->tp_write_urb_in_use = 0; |
| |
| port_number = port->number - port->serial->minor; |
| |
| dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__); |
| status = ti_command_out_sync(tdev, TI_CLOSE_PORT, |
| (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); |
| if (status) |
| dev_err(&port->dev, |
| "%s - cannot send close port command, %d\n" |
| , __func__, status); |
| |
| /* if mutex_lock is interrupted, continue anyway */ |
| do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock); |
| --tport->tp_tdev->td_open_port_count; |
| if (tport->tp_tdev->td_open_port_count <= 0) { |
| /* last port is closed, shut down interrupt urb */ |
| usb_kill_urb(port->serial->port[0]->interrupt_in_urb); |
| tport->tp_tdev->td_open_port_count = 0; |
| } |
| if (do_unlock) |
| mutex_unlock(&tdev->td_open_close_lock); |
| } |
| |
| |
| static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, |
| const unsigned char *data, int count) |
| { |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| |
| if (count == 0) { |
| dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); |
| return 0; |
| } |
| |
| if (tport == NULL || !tport->tp_is_open) |
| return -ENODEV; |
| |
| count = kfifo_in_locked(&tport->write_fifo, data, count, |
| &tport->tp_lock); |
| ti_send(tport); |
| |
| return count; |
| } |
| |
| |
| static int ti_write_room(struct tty_struct *tty) |
| { |
| struct usb_serial_port *port = tty->driver_data; |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| int room = 0; |
| unsigned long flags; |
| |
| if (tport == NULL) |
| return 0; |
| |
| spin_lock_irqsave(&tport->tp_lock, flags); |
| room = kfifo_avail(&tport->write_fifo); |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| |
| dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); |
| return room; |
| } |
| |
| |
| static int ti_chars_in_buffer(struct tty_struct *tty) |
| { |
| struct usb_serial_port *port = tty->driver_data; |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| int chars = 0; |
| unsigned long flags; |
| |
| if (tport == NULL) |
| return 0; |
| |
| spin_lock_irqsave(&tport->tp_lock, flags); |
| chars = kfifo_len(&tport->write_fifo); |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| |
| dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); |
| return chars; |
| } |
| |
| |
| static void ti_throttle(struct tty_struct *tty) |
| { |
| struct usb_serial_port *port = tty->driver_data; |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| |
| if (tport == NULL) |
| return; |
| |
| if (I_IXOFF(tty) || C_CRTSCTS(tty)) |
| ti_stop_read(tport, tty); |
| |
| } |
| |
| |
| static void ti_unthrottle(struct tty_struct *tty) |
| { |
| struct usb_serial_port *port = tty->driver_data; |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| int status; |
| |
| if (tport == NULL) |
| return; |
| |
| if (I_IXOFF(tty) || C_CRTSCTS(tty)) { |
| status = ti_restart_read(tport, tty); |
| if (status) |
| dev_err(&port->dev, "%s - cannot restart read, %d\n", |
| __func__, status); |
| } |
| } |
| |
| static int ti_get_icount(struct tty_struct *tty, |
| struct serial_icounter_struct *icount) |
| { |
| struct usb_serial_port *port = tty->driver_data; |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| struct async_icount cnow = tport->tp_icount; |
| |
| dev_dbg(&port->dev, "%s - TIOCGICOUNT RX=%d, TX=%d\n", __func__, |
| cnow.rx, cnow.tx); |
| |
| icount->cts = cnow.cts; |
| icount->dsr = cnow.dsr; |
| icount->rng = cnow.rng; |
| icount->dcd = cnow.dcd; |
| icount->rx = cnow.rx; |
| icount->tx = cnow.tx; |
| icount->frame = cnow.frame; |
| icount->overrun = cnow.overrun; |
| icount->parity = cnow.parity; |
| icount->brk = cnow.brk; |
| icount->buf_overrun = cnow.buf_overrun; |
| |
| return 0; |
| } |
| |
| static int ti_ioctl(struct tty_struct *tty, |
| unsigned int cmd, unsigned long arg) |
| { |
| struct usb_serial_port *port = tty->driver_data; |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| struct async_icount cnow; |
| struct async_icount cprev; |
| |
| dev_dbg(&port->dev, "%s - cmd = 0x%04X\n", __func__, cmd); |
| |
| if (tport == NULL) |
| return -ENODEV; |
| |
| switch (cmd) { |
| case TIOCGSERIAL: |
| dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); |
| return ti_get_serial_info(tport, |
| (struct serial_struct __user *)arg); |
| case TIOCSSERIAL: |
| dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__); |
| return ti_set_serial_info(tty, tport, |
| (struct serial_struct __user *)arg); |
| case TIOCMIWAIT: |
| dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__); |
| cprev = tport->tp_icount; |
| while (1) { |
| interruptible_sleep_on(&tport->tp_msr_wait); |
| if (signal_pending(current)) |
| return -ERESTARTSYS; |
| cnow = tport->tp_icount; |
| if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
| cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) |
| return -EIO; /* no change => error */ |
| if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
| ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || |
| ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || |
| ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) |
| return 0; |
| cprev = cnow; |
| } |
| break; |
| } |
| return -ENOIOCTLCMD; |
| } |
| |
| |
| static void ti_set_termios(struct tty_struct *tty, |
| struct usb_serial_port *port, struct ktermios *old_termios) |
| { |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| struct ti_uart_config *config; |
| tcflag_t cflag, iflag; |
| int baud; |
| int status; |
| int port_number = port->number - port->serial->minor; |
| unsigned int mcr; |
| |
| cflag = tty->termios->c_cflag; |
| iflag = tty->termios->c_iflag; |
| |
| dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag); |
| dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__, |
| old_termios->c_cflag, old_termios->c_iflag); |
| |
| if (tport == NULL) |
| return; |
| |
| config = kmalloc(sizeof(*config), GFP_KERNEL); |
| if (!config) { |
| dev_err(&port->dev, "%s - out of memory\n", __func__); |
| return; |
| } |
| |
| config->wFlags = 0; |
| |
| /* these flags must be set */ |
| config->wFlags |= TI_UART_ENABLE_MS_INTS; |
| config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA; |
| config->bUartMode = (__u8)(tport->tp_uart_mode); |
| |
| switch (cflag & CSIZE) { |
| case CS5: |
| config->bDataBits = TI_UART_5_DATA_BITS; |
| break; |
| case CS6: |
| config->bDataBits = TI_UART_6_DATA_BITS; |
| break; |
| case CS7: |
| config->bDataBits = TI_UART_7_DATA_BITS; |
| break; |
| default: |
| case CS8: |
| config->bDataBits = TI_UART_8_DATA_BITS; |
| break; |
| } |
| |
| /* CMSPAR isn't supported by this driver */ |
| tty->termios->c_cflag &= ~CMSPAR; |
| |
| if (cflag & PARENB) { |
| if (cflag & PARODD) { |
| config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING; |
| config->bParity = TI_UART_ODD_PARITY; |
| } else { |
| config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING; |
| config->bParity = TI_UART_EVEN_PARITY; |
| } |
| } else { |
| config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING; |
| config->bParity = TI_UART_NO_PARITY; |
| } |
| |
| if (cflag & CSTOPB) |
| config->bStopBits = TI_UART_2_STOP_BITS; |
| else |
| config->bStopBits = TI_UART_1_STOP_BITS; |
| |
| if (cflag & CRTSCTS) { |
| /* RTS flow control must be off to drop RTS for baud rate B0 */ |
| if ((cflag & CBAUD) != B0) |
| config->wFlags |= TI_UART_ENABLE_RTS_IN; |
| config->wFlags |= TI_UART_ENABLE_CTS_OUT; |
| } else { |
| tty->hw_stopped = 0; |
| ti_restart_read(tport, tty); |
| } |
| |
| if (I_IXOFF(tty) || I_IXON(tty)) { |
| config->cXon = START_CHAR(tty); |
| config->cXoff = STOP_CHAR(tty); |
| |
| if (I_IXOFF(tty)) |
| config->wFlags |= TI_UART_ENABLE_X_IN; |
| else |
| ti_restart_read(tport, tty); |
| |
| if (I_IXON(tty)) |
| config->wFlags |= TI_UART_ENABLE_X_OUT; |
| } |
| |
| baud = tty_get_baud_rate(tty); |
| if (!baud) |
| baud = 9600; |
| if (tport->tp_tdev->td_is_3410) |
| config->wBaudRate = (__u16)((923077 + baud/2) / baud); |
| else |
| config->wBaudRate = (__u16)((461538 + baud/2) / baud); |
| |
| /* FIXME: Should calculate resulting baud here and report it back */ |
| if ((cflag & CBAUD) != B0) |
| tty_encode_baud_rate(tty, baud, baud); |
| |
| dev_dbg(&port->dev, |
| "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d", |
| __func__, baud, config->wBaudRate, config->wFlags, |
| config->bDataBits, config->bParity, config->bStopBits, |
| config->cXon, config->cXoff, config->bUartMode); |
| |
| cpu_to_be16s(&config->wBaudRate); |
| cpu_to_be16s(&config->wFlags); |
| |
| status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG, |
| (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, |
| sizeof(*config)); |
| if (status) |
| dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", |
| __func__, port_number, status); |
| |
| /* SET_CONFIG asserts RTS and DTR, reset them correctly */ |
| mcr = tport->tp_shadow_mcr; |
| /* if baud rate is B0, clear RTS and DTR */ |
| if ((cflag & CBAUD) == B0) |
| mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); |
| status = ti_set_mcr(tport, mcr); |
| if (status) |
| dev_err(&port->dev, |
| "%s - cannot set modem control on port %d, %d\n", |
| __func__, port_number, status); |
| |
| kfree(config); |
| } |
| |
| |
| static int ti_tiocmget(struct tty_struct *tty) |
| { |
| struct usb_serial_port *port = tty->driver_data; |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| unsigned int result; |
| unsigned int msr; |
| unsigned int mcr; |
| unsigned long flags; |
| |
| if (tport == NULL) |
| return -ENODEV; |
| |
| spin_lock_irqsave(&tport->tp_lock, flags); |
| msr = tport->tp_msr; |
| mcr = tport->tp_shadow_mcr; |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| |
| result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) |
| | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) |
| | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) |
| | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) |
| | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) |
| | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) |
| | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); |
| |
| dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); |
| |
| return result; |
| } |
| |
| |
| static int ti_tiocmset(struct tty_struct *tty, |
| unsigned int set, unsigned int clear) |
| { |
| struct usb_serial_port *port = tty->driver_data; |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| unsigned int mcr; |
| unsigned long flags; |
| |
| if (tport == NULL) |
| return -ENODEV; |
| |
| spin_lock_irqsave(&tport->tp_lock, flags); |
| mcr = tport->tp_shadow_mcr; |
| |
| if (set & TIOCM_RTS) |
| mcr |= TI_MCR_RTS; |
| if (set & TIOCM_DTR) |
| mcr |= TI_MCR_DTR; |
| if (set & TIOCM_LOOP) |
| mcr |= TI_MCR_LOOP; |
| |
| if (clear & TIOCM_RTS) |
| mcr &= ~TI_MCR_RTS; |
| if (clear & TIOCM_DTR) |
| mcr &= ~TI_MCR_DTR; |
| if (clear & TIOCM_LOOP) |
| mcr &= ~TI_MCR_LOOP; |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| |
| return ti_set_mcr(tport, mcr); |
| } |
| |
| |
| static void ti_break(struct tty_struct *tty, int break_state) |
| { |
| struct usb_serial_port *port = tty->driver_data; |
| struct ti_port *tport = usb_get_serial_port_data(port); |
| int status; |
| |
| dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); |
| |
| if (tport == NULL) |
| return; |
| |
| ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0); |
| |
| status = ti_write_byte(port, tport->tp_tdev, |
| tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, |
| TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); |
| |
| if (status) |
| dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); |
| } |
| |
| |
| static void ti_interrupt_callback(struct urb *urb) |
| { |
| struct ti_device *tdev = urb->context; |
| struct usb_serial_port *port; |
| struct usb_serial *serial = tdev->td_serial; |
| struct ti_port *tport; |
| struct device *dev = &urb->dev->dev; |
| unsigned char *data = urb->transfer_buffer; |
| int length = urb->actual_length; |
| int port_number; |
| int function; |
| int status = urb->status; |
| int retval; |
| __u8 msr; |
| |
| switch (status) { |
| case 0: |
| break; |
| case -ECONNRESET: |
| case -ENOENT: |
| case -ESHUTDOWN: |
| dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); |
| tdev->td_urb_error = 1; |
| return; |
| default: |
| dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); |
| tdev->td_urb_error = 1; |
| goto exit; |
| } |
| |
| if (length != 2) { |
| dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); |
| goto exit; |
| } |
| |
| if (data[0] == TI_CODE_HARDWARE_ERROR) { |
| dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); |
| goto exit; |
| } |
| |
| port_number = TI_GET_PORT_FROM_CODE(data[0]); |
| function = TI_GET_FUNC_FROM_CODE(data[0]); |
| |
| dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", |
| __func__, port_number, function, data[1]); |
| |
| if (port_number >= serial->num_ports) { |
| dev_err(dev, "%s - bad port number, %d\n", |
| __func__, port_number); |
| goto exit; |
| } |
| |
| port = serial->port[port_number]; |
| |
| tport = usb_get_serial_port_data(port); |
| if (!tport) |
| goto exit; |
| |
| switch (function) { |
| case TI_CODE_DATA_ERROR: |
| dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", |
| __func__, port_number, data[1]); |
| break; |
| |
| case TI_CODE_MODEM_STATUS: |
| msr = data[1]; |
| dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); |
| ti_handle_new_msr(tport, msr); |
| break; |
| |
| default: |
| dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", |
| __func__, data[1]); |
| break; |
| } |
| |
| exit: |
| retval = usb_submit_urb(urb, GFP_ATOMIC); |
| if (retval) |
| dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", |
| __func__, retval); |
| } |
| |
| |
| static void ti_bulk_in_callback(struct urb *urb) |
| { |
| struct ti_port *tport = urb->context; |
| struct usb_serial_port *port = tport->tp_port; |
| struct device *dev = &urb->dev->dev; |
| int status = urb->status; |
| int retval = 0; |
| struct tty_struct *tty; |
| |
| switch (status) { |
| case 0: |
| break; |
| case -ECONNRESET: |
| case -ENOENT: |
| case -ESHUTDOWN: |
| dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); |
| tport->tp_tdev->td_urb_error = 1; |
| wake_up_interruptible(&tport->tp_write_wait); |
| return; |
| default: |
| dev_err(dev, "%s - nonzero urb status, %d\n", |
| __func__, status); |
| tport->tp_tdev->td_urb_error = 1; |
| wake_up_interruptible(&tport->tp_write_wait); |
| } |
| |
| if (status == -EPIPE) |
| goto exit; |
| |
| if (status) { |
| dev_err(dev, "%s - stopping read!\n", __func__); |
| return; |
| } |
| |
| tty = tty_port_tty_get(&port->port); |
| if (tty) { |
| if (urb->actual_length) { |
| usb_serial_debug_data(dev, __func__, urb->actual_length, |
| urb->transfer_buffer); |
| |
| if (!tport->tp_is_open) |
| dev_dbg(dev, "%s - port closed, dropping data\n", |
| __func__); |
| else |
| ti_recv(&urb->dev->dev, tty, |
| urb->transfer_buffer, |
| urb->actual_length); |
| spin_lock(&tport->tp_lock); |
| tport->tp_icount.rx += urb->actual_length; |
| spin_unlock(&tport->tp_lock); |
| } |
| tty_kref_put(tty); |
| } |
| |
| exit: |
| /* continue to read unless stopping */ |
| spin_lock(&tport->tp_lock); |
| if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) |
| retval = usb_submit_urb(urb, GFP_ATOMIC); |
| else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) |
| tport->tp_read_urb_state = TI_READ_URB_STOPPED; |
| |
| spin_unlock(&tport->tp_lock); |
| if (retval) |
| dev_err(dev, "%s - resubmit read urb failed, %d\n", |
| __func__, retval); |
| } |
| |
| |
| static void ti_bulk_out_callback(struct urb *urb) |
| { |
| struct ti_port *tport = urb->context; |
| struct usb_serial_port *port = tport->tp_port; |
| int status = urb->status; |
| |
| tport->tp_write_urb_in_use = 0; |
| |
| switch (status) { |
| case 0: |
| break; |
| case -ECONNRESET: |
| case -ENOENT: |
| case -ESHUTDOWN: |
| dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); |
| tport->tp_tdev->td_urb_error = 1; |
| wake_up_interruptible(&tport->tp_write_wait); |
| return; |
| default: |
| dev_err_console(port, "%s - nonzero urb status, %d\n", |
| __func__, status); |
| tport->tp_tdev->td_urb_error = 1; |
| wake_up_interruptible(&tport->tp_write_wait); |
| } |
| |
| /* send any buffered data */ |
| ti_send(tport); |
| } |
| |
| |
| static void ti_recv(struct device *dev, struct tty_struct *tty, |
| unsigned char *data, int length) |
| { |
| int cnt; |
| |
| do { |
| cnt = tty_insert_flip_string(tty, data, length); |
| if (cnt < length) { |
| dev_err(dev, "%s - dropping data, %d bytes lost\n", |
| __func__, length - cnt); |
| if (cnt == 0) |
| break; |
| } |
| tty_flip_buffer_push(tty); |
| data += cnt; |
| length -= cnt; |
| } while (length > 0); |
| |
| } |
| |
| |
| static void ti_send(struct ti_port *tport) |
| { |
| int count, result; |
| struct usb_serial_port *port = tport->tp_port; |
| struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */ |
| unsigned long flags; |
| |
| spin_lock_irqsave(&tport->tp_lock, flags); |
| |
| if (tport->tp_write_urb_in_use) |
| goto unlock; |
| |
| count = kfifo_out(&tport->write_fifo, |
| port->write_urb->transfer_buffer, |
| port->bulk_out_size); |
| |
| if (count == 0) |
| goto unlock; |
| |
| tport->tp_write_urb_in_use = 1; |
| |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| |
| usb_serial_debug_data(&port->dev, __func__, count, |
| port->write_urb->transfer_buffer); |
| |
| usb_fill_bulk_urb(port->write_urb, port->serial->dev, |
| usb_sndbulkpipe(port->serial->dev, |
| port->bulk_out_endpointAddress), |
| port->write_urb->transfer_buffer, count, |
| ti_bulk_out_callback, tport); |
| |
| result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
| if (result) { |
| dev_err_console(port, "%s - submit write urb failed, %d\n", |
| __func__, result); |
| tport->tp_write_urb_in_use = 0; |
| /* TODO: reschedule ti_send */ |
| } else { |
| spin_lock_irqsave(&tport->tp_lock, flags); |
| tport->tp_icount.tx += count; |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| } |
| |
| /* more room in the buffer for new writes, wakeup */ |
| if (tty) |
| tty_wakeup(tty); |
| tty_kref_put(tty); |
| wake_up_interruptible(&tport->tp_write_wait); |
| return; |
| unlock: |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| tty_kref_put(tty); |
| return; |
| } |
| |
| |
| static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) |
| { |
| unsigned long flags; |
| int status; |
| |
| status = ti_write_byte(tport->tp_port, tport->tp_tdev, |
| tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, |
| TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); |
| |
| spin_lock_irqsave(&tport->tp_lock, flags); |
| if (!status) |
| tport->tp_shadow_mcr = mcr; |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| |
| return status; |
| } |
| |
| |
| static int ti_get_lsr(struct ti_port *tport) |
| { |
| int size, status; |
| struct ti_device *tdev = tport->tp_tdev; |
| struct usb_serial_port *port = tport->tp_port; |
| int port_number = port->number - port->serial->minor; |
| struct ti_port_status *data; |
| |
| size = sizeof(struct ti_port_status); |
| data = kmalloc(size, GFP_KERNEL); |
| if (!data) { |
| dev_err(&port->dev, "%s - out of memory\n", __func__); |
| return -ENOMEM; |
| } |
| |
| status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, |
| (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); |
| if (status) { |
| dev_err(&port->dev, |
| "%s - get port status command failed, %d\n", |
| __func__, status); |
| goto free_data; |
| } |
| |
| dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); |
| |
| tport->tp_lsr = data->bLSR; |
| |
| free_data: |
| kfree(data); |
| return status; |
| } |
| |
| |
| static int ti_get_serial_info(struct ti_port *tport, |
| struct serial_struct __user *ret_arg) |
| { |
| struct usb_serial_port *port = tport->tp_port; |
| struct serial_struct ret_serial; |
| |
| if (!ret_arg) |
| return -EFAULT; |
| |
| memset(&ret_serial, 0, sizeof(ret_serial)); |
| |
| ret_serial.type = PORT_16550A; |
| ret_serial.line = port->serial->minor; |
| ret_serial.port = port->number - port->serial->minor; |
| ret_serial.flags = tport->tp_flags; |
| ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE; |
| ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; |
| ret_serial.closing_wait = tport->tp_closing_wait; |
| |
| if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, |
| struct serial_struct __user *new_arg) |
| { |
| struct serial_struct new_serial; |
| |
| if (copy_from_user(&new_serial, new_arg, sizeof(new_serial))) |
| return -EFAULT; |
| |
| tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS; |
| tport->tp_closing_wait = new_serial.closing_wait; |
| |
| return 0; |
| } |
| |
| |
| static void ti_handle_new_msr(struct ti_port *tport, __u8 msr) |
| { |
| struct async_icount *icount; |
| struct tty_struct *tty; |
| unsigned long flags; |
| |
| dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); |
| |
| if (msr & TI_MSR_DELTA_MASK) { |
| spin_lock_irqsave(&tport->tp_lock, flags); |
| icount = &tport->tp_icount; |
| if (msr & TI_MSR_DELTA_CTS) |
| icount->cts++; |
| if (msr & TI_MSR_DELTA_DSR) |
| icount->dsr++; |
| if (msr & TI_MSR_DELTA_CD) |
| icount->dcd++; |
| if (msr & TI_MSR_DELTA_RI) |
| icount->rng++; |
| wake_up_interruptible(&tport->tp_msr_wait); |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| } |
| |
| tport->tp_msr = msr & TI_MSR_MASK; |
| |
| /* handle CTS flow control */ |
| tty = tty_port_tty_get(&tport->tp_port->port); |
| if (tty && C_CRTSCTS(tty)) { |
| if (msr & TI_MSR_CTS) { |
| tty->hw_stopped = 0; |
| tty_wakeup(tty); |
| } else { |
| tty->hw_stopped = 1; |
| } |
| } |
| tty_kref_put(tty); |
| } |
| |
| |
| static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) |
| { |
| struct ti_device *tdev = tport->tp_tdev; |
| struct usb_serial_port *port = tport->tp_port; |
| wait_queue_t wait; |
| |
| spin_lock_irq(&tport->tp_lock); |
| |
| /* wait for data to drain from the buffer */ |
| tdev->td_urb_error = 0; |
| init_waitqueue_entry(&wait, current); |
| add_wait_queue(&tport->tp_write_wait, &wait); |
| for (;;) { |
| set_current_state(TASK_INTERRUPTIBLE); |
| if (kfifo_len(&tport->write_fifo) == 0 |
| || timeout == 0 || signal_pending(current) |
| || tdev->td_urb_error |
| || port->serial->disconnected) /* disconnect */ |
| break; |
| spin_unlock_irq(&tport->tp_lock); |
| timeout = schedule_timeout(timeout); |
| spin_lock_irq(&tport->tp_lock); |
| } |
| set_current_state(TASK_RUNNING); |
| remove_wait_queue(&tport->tp_write_wait, &wait); |
| |
| /* flush any remaining data in the buffer */ |
| if (flush) |
| kfifo_reset_out(&tport->write_fifo); |
| |
| spin_unlock_irq(&tport->tp_lock); |
| |
| mutex_lock(&port->serial->disc_mutex); |
| /* wait for data to drain from the device */ |
| /* wait for empty tx register, plus 20 ms */ |
| timeout += jiffies; |
| tport->tp_lsr &= ~TI_LSR_TX_EMPTY; |
| while ((long)(jiffies - timeout) < 0 && !signal_pending(current) |
| && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error |
| && !port->serial->disconnected) { |
| if (ti_get_lsr(tport)) |
| break; |
| mutex_unlock(&port->serial->disc_mutex); |
| msleep_interruptible(20); |
| mutex_lock(&port->serial->disc_mutex); |
| } |
| mutex_unlock(&port->serial->disc_mutex); |
| } |
| |
| |
| static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&tport->tp_lock, flags); |
| |
| if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) |
| tport->tp_read_urb_state = TI_READ_URB_STOPPING; |
| |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| } |
| |
| |
| static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) |
| { |
| struct urb *urb; |
| int status = 0; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&tport->tp_lock, flags); |
| |
| if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { |
| tport->tp_read_urb_state = TI_READ_URB_RUNNING; |
| urb = tport->tp_port->read_urb; |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| urb->context = tport; |
| status = usb_submit_urb(urb, GFP_KERNEL); |
| } else { |
| tport->tp_read_urb_state = TI_READ_URB_RUNNING; |
| spin_unlock_irqrestore(&tport->tp_lock, flags); |
| } |
| |
| return status; |
| } |
| |
| |
| static int ti_command_out_sync(struct ti_device *tdev, __u8 command, |
| __u16 moduleid, __u16 value, __u8 *data, int size) |
| { |
| int status; |
| |
| status = usb_control_msg(tdev->td_serial->dev, |
| usb_sndctrlpipe(tdev->td_serial->dev, 0), command, |
| (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), |
| value, moduleid, data, size, 1000); |
| |
| if (status == size) |
| status = 0; |
| |
| if (status > 0) |
| status = -ECOMM; |
| |
| return status; |
| } |
| |
| |
| static int ti_command_in_sync(struct ti_device *tdev, __u8 command, |
| __u16 moduleid, __u16 value, __u8 *data, int size) |
| { |
| int status; |
| |
| status = usb_control_msg(tdev->td_serial->dev, |
| usb_rcvctrlpipe(tdev->td_serial->dev, 0), command, |
| (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), |
| value, moduleid, data, size, 1000); |
| |
| if (status == size) |
| status = 0; |
| |
| if (status > 0) |
| status = -ECOMM; |
| |
| return status; |
| } |
| |
| |
| static int ti_write_byte(struct usb_serial_port *port, |
| struct ti_device *tdev, unsigned long addr, |
| __u8 mask, __u8 byte) |
| { |
| int status; |
| unsigned int size; |
| struct ti_write_data_bytes *data; |
| |
| dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, |
| addr, mask, byte); |
| |
| size = sizeof(struct ti_write_data_bytes) + 2; |
| data = kmalloc(size, GFP_KERNEL); |
| if (!data) { |
| dev_err(&port->dev, "%s - out of memory\n", __func__); |
| return -ENOMEM; |
| } |
| |
| data->bAddrType = TI_RW_DATA_ADDR_XDATA; |
| data->bDataType = TI_RW_DATA_BYTE; |
| data->bDataCounter = 1; |
| data->wBaseAddrHi = cpu_to_be16(addr>>16); |
| data->wBaseAddrLo = cpu_to_be16(addr); |
| data->bData[0] = mask; |
| data->bData[1] = byte; |
| |
| status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0, |
| (__u8 *)data, size); |
| |
| if (status < 0) |
| dev_err(&port->dev, "%s - failed, %d\n", __func__, status); |
| |
| kfree(data); |
| |
| return status; |
| } |
| |
| static int ti_do_download(struct usb_device *dev, int pipe, |
| u8 *buffer, int size) |
| { |
| int pos; |
| u8 cs = 0; |
| int done; |
| struct ti_firmware_header *header; |
| int status = 0; |
| int len; |
| |
| for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) |
| cs = (__u8)(cs + buffer[pos]); |
| |
| header = (struct ti_firmware_header *)buffer; |
| header->wLength = cpu_to_le16((__u16)(size |
| - sizeof(struct ti_firmware_header))); |
| header->bCheckSum = cs; |
| |
| dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); |
| for (pos = 0; pos < size; pos += done) { |
| len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); |
| status = usb_bulk_msg(dev, pipe, buffer + pos, len, |
| &done, 1000); |
| if (status) |
| break; |
| } |
| return status; |
| } |
| |
| static int ti_download_firmware(struct ti_device *tdev) |
| { |
| int status; |
| int buffer_size; |
| __u8 *buffer; |
| struct usb_device *dev = tdev->td_serial->dev; |
| unsigned int pipe = usb_sndbulkpipe(dev, |
| tdev->td_serial->port[0]->bulk_out_endpointAddress); |
| const struct firmware *fw_p; |
| char buf[32]; |
| |
| /* try ID specific firmware first, then try generic firmware */ |
| sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor, |
| dev->descriptor.idProduct); |
| status = request_firmware(&fw_p, buf, &dev->dev); |
| |
| if (status != 0) { |
| buf[0] = '\0'; |
| if (dev->descriptor.idVendor == MTS_VENDOR_ID) { |
| switch (dev->descriptor.idProduct) { |
| case MTS_CDMA_PRODUCT_ID: |
| strcpy(buf, "mts_cdma.fw"); |
| break; |
| case MTS_GSM_PRODUCT_ID: |
| strcpy(buf, "mts_gsm.fw"); |
| break; |
| case MTS_EDGE_PRODUCT_ID: |
| strcpy(buf, "mts_edge.fw"); |
| break; |
| case MTS_MT9234MU_PRODUCT_ID: |
| strcpy(buf, "mts_mt9234mu.fw"); |
| break; |
| case MTS_MT9234ZBA_PRODUCT_ID: |
| strcpy(buf, "mts_mt9234zba.fw"); |
| break; |
| case MTS_MT9234ZBAOLD_PRODUCT_ID: |
| strcpy(buf, "mts_mt9234zba.fw"); |
| break; } |
| } |
| if (buf[0] == '\0') { |
| if (tdev->td_is_3410) |
| strcpy(buf, "ti_3410.fw"); |
| else |
| strcpy(buf, "ti_5052.fw"); |
| } |
| status = request_firmware(&fw_p, buf, &dev->dev); |
| } |
| if (status) { |
| dev_err(&dev->dev, "%s - firmware not found\n", __func__); |
| return -ENOENT; |
| } |
| if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { |
| dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); |
| release_firmware(fw_p); |
| return -ENOENT; |
| } |
| |
| buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); |
| buffer = kmalloc(buffer_size, GFP_KERNEL); |
| if (buffer) { |
| memcpy(buffer, fw_p->data, fw_p->size); |
| memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); |
| status = ti_do_download(dev, pipe, buffer, fw_p->size); |
| kfree(buffer); |
| } else { |
| dev_dbg(&dev->dev, "%s ENOMEM\n", __func__); |
| status = -ENOMEM; |
| } |
| release_firmware(fw_p); |
| if (status) { |
| dev_err(&dev->dev, "%s - error downloading firmware, %d\n", |
| __func__, status); |
| return status; |
| } |
| |
| dev_dbg(&dev->dev, "%s - download successful\n", __func__); |
| |
| return 0; |
| } |