1749 строки
46 KiB
C
1749 строки
46 KiB
C
/* vi: ts=8 sw=8
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*
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* TI 3410/5052 USB Serial Driver
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*
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* Copyright (C) 2004 Texas Instruments
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*
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* This driver is based on the Linux io_ti driver, which is
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* Copyright (C) 2000-2002 Inside Out Networks
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* Copyright (C) 2001-2002 Greg Kroah-Hartman
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* For questions or problems with this driver, contact Texas Instruments
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* technical support, or Al Borchers <alborchers@steinerpoint.com>, or
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* Peter Berger <pberger@brimson.com>.
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/firmware.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/tty.h>
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#include <linux/tty_driver.h>
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#include <linux/tty_flip.h>
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <linux/ioctl.h>
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#include <linux/serial.h>
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#include <linux/kfifo.h>
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#include <linux/mutex.h>
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#include <linux/uaccess.h>
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#include <linux/usb.h>
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#include <linux/usb/serial.h>
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#include "ti_usb_3410_5052.h"
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/* Defines */
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#define TI_DRIVER_VERSION "v0.10"
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#define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
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#define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
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#define TI_FIRMWARE_BUF_SIZE 16284
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#define TI_WRITE_BUF_SIZE 1024
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#define TI_TRANSFER_TIMEOUT 2
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#define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
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/* supported setserial flags */
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#define TI_SET_SERIAL_FLAGS 0
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/* read urb states */
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#define TI_READ_URB_RUNNING 0
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#define TI_READ_URB_STOPPING 1
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#define TI_READ_URB_STOPPED 2
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#define TI_EXTRA_VID_PID_COUNT 5
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/* Structures */
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struct ti_port {
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int tp_is_open;
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__u8 tp_msr;
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__u8 tp_lsr;
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__u8 tp_shadow_mcr;
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__u8 tp_uart_mode; /* 232 or 485 modes */
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unsigned int tp_uart_base_addr;
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int tp_flags;
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int tp_closing_wait;/* in .01 secs */
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struct async_icount tp_icount;
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wait_queue_head_t tp_msr_wait; /* wait for msr change */
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wait_queue_head_t tp_write_wait;
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struct ti_device *tp_tdev;
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struct usb_serial_port *tp_port;
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spinlock_t tp_lock;
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int tp_read_urb_state;
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int tp_write_urb_in_use;
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struct kfifo write_fifo;
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};
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struct ti_device {
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struct mutex td_open_close_lock;
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int td_open_port_count;
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struct usb_serial *td_serial;
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int td_is_3410;
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int td_urb_error;
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};
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/* Function Declarations */
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static int ti_startup(struct usb_serial *serial);
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static void ti_release(struct usb_serial *serial);
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static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
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static void ti_close(struct usb_serial_port *port);
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static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
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const unsigned char *data, int count);
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static int ti_write_room(struct tty_struct *tty);
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static int ti_chars_in_buffer(struct tty_struct *tty);
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static void ti_throttle(struct tty_struct *tty);
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static void ti_unthrottle(struct tty_struct *tty);
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static int ti_ioctl(struct tty_struct *tty,
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unsigned int cmd, unsigned long arg);
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static int ti_get_icount(struct tty_struct *tty,
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struct serial_icounter_struct *icount);
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static void ti_set_termios(struct tty_struct *tty,
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struct usb_serial_port *port, struct ktermios *old_termios);
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static int ti_tiocmget(struct tty_struct *tty);
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static int ti_tiocmset(struct tty_struct *tty,
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unsigned int set, unsigned int clear);
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static void ti_break(struct tty_struct *tty, int break_state);
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static void ti_interrupt_callback(struct urb *urb);
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static void ti_bulk_in_callback(struct urb *urb);
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static void ti_bulk_out_callback(struct urb *urb);
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static void ti_recv(struct device *dev, struct tty_struct *tty,
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unsigned char *data, int length);
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static void ti_send(struct ti_port *tport);
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static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
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static int ti_get_lsr(struct ti_port *tport);
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static int ti_get_serial_info(struct ti_port *tport,
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struct serial_struct __user *ret_arg);
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static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
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struct serial_struct __user *new_arg);
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static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
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static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush);
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static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
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static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
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static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
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__u16 moduleid, __u16 value, __u8 *data, int size);
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static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
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__u16 moduleid, __u16 value, __u8 *data, int size);
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static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
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__u8 mask, __u8 byte);
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static int ti_download_firmware(struct ti_device *tdev);
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/* Data */
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/* module parameters */
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static bool debug;
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static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
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static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT];
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static unsigned int vendor_3410_count;
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static ushort product_3410[TI_EXTRA_VID_PID_COUNT];
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static unsigned int product_3410_count;
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static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT];
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static unsigned int vendor_5052_count;
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static ushort product_5052[TI_EXTRA_VID_PID_COUNT];
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static unsigned int product_5052_count;
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/* supported devices */
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/* the array dimension is the number of default entries plus */
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/* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
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/* null entry */
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static struct usb_device_id ti_id_table_3410[14+TI_EXTRA_VID_PID_COUNT+1] = {
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{ USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
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{ USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
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{ USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
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{ USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
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{ USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
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{ USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
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};
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static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = {
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{ USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
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{ USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
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{ USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
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{ USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
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};
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static struct usb_device_id ti_id_table_combined[18+2*TI_EXTRA_VID_PID_COUNT+1] = {
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{ USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
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{ USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
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{ USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
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{ USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
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{ USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
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{ USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
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{ USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
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{ USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
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{ USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
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{ USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
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{ USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
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{ }
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};
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static struct usb_driver ti_usb_driver = {
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.name = "ti_usb_3410_5052",
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.probe = usb_serial_probe,
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.disconnect = usb_serial_disconnect,
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.id_table = ti_id_table_combined,
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};
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static struct usb_serial_driver ti_1port_device = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "ti_usb_3410_5052_1",
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},
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.description = "TI USB 3410 1 port adapter",
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.id_table = ti_id_table_3410,
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.num_ports = 1,
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.attach = ti_startup,
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.release = ti_release,
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.open = ti_open,
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.close = ti_close,
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.write = ti_write,
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.write_room = ti_write_room,
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.chars_in_buffer = ti_chars_in_buffer,
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.throttle = ti_throttle,
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.unthrottle = ti_unthrottle,
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.ioctl = ti_ioctl,
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.set_termios = ti_set_termios,
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.tiocmget = ti_tiocmget,
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.tiocmset = ti_tiocmset,
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.get_icount = ti_get_icount,
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.break_ctl = ti_break,
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.read_int_callback = ti_interrupt_callback,
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.read_bulk_callback = ti_bulk_in_callback,
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.write_bulk_callback = ti_bulk_out_callback,
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};
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static struct usb_serial_driver ti_2port_device = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "ti_usb_3410_5052_2",
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},
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.description = "TI USB 5052 2 port adapter",
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.id_table = ti_id_table_5052,
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.num_ports = 2,
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.attach = ti_startup,
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.release = ti_release,
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.open = ti_open,
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.close = ti_close,
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.write = ti_write,
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.write_room = ti_write_room,
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.chars_in_buffer = ti_chars_in_buffer,
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.throttle = ti_throttle,
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.unthrottle = ti_unthrottle,
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.ioctl = ti_ioctl,
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.set_termios = ti_set_termios,
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.tiocmget = ti_tiocmget,
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.tiocmset = ti_tiocmset,
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.get_icount = ti_get_icount,
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.break_ctl = ti_break,
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.read_int_callback = ti_interrupt_callback,
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.read_bulk_callback = ti_bulk_in_callback,
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.write_bulk_callback = ti_bulk_out_callback,
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};
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static struct usb_serial_driver * const serial_drivers[] = {
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&ti_1port_device, &ti_2port_device, NULL
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};
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/* Module */
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MODULE_AUTHOR(TI_DRIVER_AUTHOR);
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MODULE_DESCRIPTION(TI_DRIVER_DESC);
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MODULE_VERSION(TI_DRIVER_VERSION);
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MODULE_LICENSE("GPL");
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MODULE_FIRMWARE("ti_3410.fw");
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MODULE_FIRMWARE("ti_5052.fw");
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MODULE_FIRMWARE("mts_cdma.fw");
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MODULE_FIRMWARE("mts_gsm.fw");
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MODULE_FIRMWARE("mts_edge.fw");
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MODULE_FIRMWARE("mts_mt9234mu.fw");
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MODULE_FIRMWARE("mts_mt9234zba.fw");
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module_param(debug, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes");
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module_param(closing_wait, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(closing_wait,
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"Maximum wait for data to drain in close, in .01 secs, default is 4000");
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module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO);
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MODULE_PARM_DESC(vendor_3410,
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"Vendor ids for 3410 based devices, 1-5 short integers");
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module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO);
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MODULE_PARM_DESC(product_3410,
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"Product ids for 3410 based devices, 1-5 short integers");
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module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO);
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MODULE_PARM_DESC(vendor_5052,
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"Vendor ids for 5052 based devices, 1-5 short integers");
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module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO);
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MODULE_PARM_DESC(product_5052,
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"Product ids for 5052 based devices, 1-5 short integers");
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MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
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/* Functions */
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static int __init ti_init(void)
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{
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int i, j, c;
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int ret;
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/* insert extra vendor and product ids */
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c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1;
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j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1;
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for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) {
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ti_id_table_3410[j].idVendor = vendor_3410[i];
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ti_id_table_3410[j].idProduct = product_3410[i];
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ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
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ti_id_table_combined[c].idVendor = vendor_3410[i];
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ti_id_table_combined[c].idProduct = product_3410[i];
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ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
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}
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j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1;
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for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) {
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ti_id_table_5052[j].idVendor = vendor_5052[i];
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ti_id_table_5052[j].idProduct = product_5052[i];
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ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
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ti_id_table_combined[c].idVendor = vendor_5052[i];
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ti_id_table_combined[c].idProduct = product_5052[i];
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ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
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}
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ret = usb_serial_register_drivers(&ti_usb_driver, serial_drivers);
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if (ret == 0)
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printk(KERN_INFO KBUILD_MODNAME ": " TI_DRIVER_VERSION ":"
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TI_DRIVER_DESC "\n");
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return ret;
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}
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static void __exit ti_exit(void)
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{
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usb_serial_deregister_drivers(&ti_usb_driver, serial_drivers);
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}
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module_init(ti_init);
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module_exit(ti_exit);
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static int ti_startup(struct usb_serial *serial)
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{
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struct ti_device *tdev;
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struct ti_port *tport;
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struct usb_device *dev = serial->dev;
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int status;
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int i;
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dbg("%s - product 0x%4X, num configurations %d, configuration value %d",
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__func__, le16_to_cpu(dev->descriptor.idProduct),
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dev->descriptor.bNumConfigurations,
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dev->actconfig->desc.bConfigurationValue);
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/* create device structure */
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tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
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if (tdev == NULL) {
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dev_err(&dev->dev, "%s - out of memory\n", __func__);
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return -ENOMEM;
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}
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mutex_init(&tdev->td_open_close_lock);
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tdev->td_serial = serial;
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usb_set_serial_data(serial, tdev);
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/* determine device type */
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if (usb_match_id(serial->interface, ti_id_table_3410))
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tdev->td_is_3410 = 1;
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dbg("%s - device type is %s", __func__,
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tdev->td_is_3410 ? "3410" : "5052");
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/* if we have only 1 configuration, download firmware */
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if (dev->descriptor.bNumConfigurations == 1) {
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if ((status = ti_download_firmware(tdev)) != 0)
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goto free_tdev;
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/* 3410 must be reset, 5052 resets itself */
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if (tdev->td_is_3410) {
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msleep_interruptible(100);
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usb_reset_device(dev);
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}
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status = -ENODEV;
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goto free_tdev;
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}
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/* the second configuration must be set */
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if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
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status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
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status = status ? status : -ENODEV;
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goto free_tdev;
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}
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|
|
|
/* 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;
|
|
|
|
dbg("%s", __func__);
|
|
|
|
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));
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
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) {
|
|
dbg("%s - start interrupt in urb", __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);
|
|
|
|
dbg("%s - sending TI_OPEN_PORT", __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;
|
|
}
|
|
|
|
dbg("%s - sending TI_START_PORT", __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;
|
|
}
|
|
|
|
dbg("%s - sending TI_PURGE_PORT", __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);
|
|
|
|
dbg("%s - sending TI_OPEN_PORT (2)", __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;
|
|
}
|
|
|
|
dbg("%s - sending TI_START_PORT (2)", __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 */
|
|
dbg("%s - start read urb", __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);
|
|
dbg("%s - exit %d", __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;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
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;
|
|
|
|
dbg("%s - sending TI_CLOSE_PORT", __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);
|
|
|
|
dbg("%s - exit", __func__);
|
|
}
|
|
|
|
|
|
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);
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
if (count == 0) {
|
|
dbg("%s - write request of 0 bytes", __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;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
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);
|
|
|
|
dbg("%s - returns %d", __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;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
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);
|
|
|
|
dbg("%s - returns %d", __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);
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
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;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
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;
|
|
|
|
dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d",
|
|
__func__, port->number,
|
|
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;
|
|
|
|
dbg("%s - port %d, cmd = 0x%04X", __func__, port->number, cmd);
|
|
|
|
if (tport == NULL)
|
|
return -ENODEV;
|
|
|
|
switch (cmd) {
|
|
case TIOCGSERIAL:
|
|
dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
|
|
return ti_get_serial_info(tport,
|
|
(struct serial_struct __user *)arg);
|
|
case TIOCSSERIAL:
|
|
dbg("%s - (%d) TIOCSSERIAL", __func__, port->number);
|
|
return ti_set_serial_info(tty, tport,
|
|
(struct serial_struct __user *)arg);
|
|
case TIOCMIWAIT:
|
|
dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
|
|
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;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
cflag = tty->termios->c_cflag;
|
|
iflag = tty->termios->c_iflag;
|
|
|
|
dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag);
|
|
dbg("%s - old clfag %08x, old iflag %08x", __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);
|
|
|
|
dbg("%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;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
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);
|
|
|
|
dbg("%s - 0x%04X", __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;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
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;
|
|
|
|
dbg("%s - state = %d", __func__, break_state);
|
|
|
|
if (tport == NULL)
|
|
return;
|
|
|
|
ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0);
|
|
|
|
status = ti_write_byte(tport->tp_tdev,
|
|
tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
|
|
TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
|
|
|
|
if (status)
|
|
dbg("%s - error setting break, %d", __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;
|
|
|
|
dbg("%s", __func__);
|
|
|
|
switch (status) {
|
|
case 0:
|
|
break;
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
dbg("%s - urb shutting down, %d", __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) {
|
|
dbg("%s - bad packet size, %d", __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]);
|
|
|
|
dbg("%s - port_number %d, function %d, data 0x%02X",
|
|
__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];
|
|
dbg("%s - port %d, msr 0x%02X", __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;
|
|
|
|
dbg("%s", __func__);
|
|
|
|
switch (status) {
|
|
case 0:
|
|
break;
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
dbg("%s - urb shutting down, %d", __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(debug, dev, __func__,
|
|
urb->actual_length, urb->transfer_buffer);
|
|
|
|
if (!tport->tp_is_open)
|
|
dbg("%s - port closed, dropping data",
|
|
__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;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
tport->tp_write_urb_in_use = 0;
|
|
|
|
switch (status) {
|
|
case 0:
|
|
break;
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
dbg("%s - urb shutting down, %d", __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;
|
|
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
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(debug, &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_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;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
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;
|
|
}
|
|
|
|
dbg("%s - lsr 0x%02X", __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;
|
|
|
|
dbg("%s - msr 0x%02X", __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;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
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 ti_device *tdev, unsigned long addr,
|
|
__u8 mask, __u8 byte)
|
|
{
|
|
int status;
|
|
unsigned int size;
|
|
struct ti_write_data_bytes *data;
|
|
struct device *dev = &tdev->td_serial->dev->dev;
|
|
|
|
dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X",
|
|
__func__, addr, mask, byte);
|
|
|
|
size = sizeof(struct ti_write_data_bytes) + 2;
|
|
data = kmalloc(size, GFP_KERNEL);
|
|
if (!data) {
|
|
dev_err(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(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;
|
|
|
|
dbg("%s - downloading firmware", __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];
|
|
|
|
dbg("%s\n", __func__);
|
|
/* try ID specific firmware first, then try generic firmware */
|
|
sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor,
|
|
dev->descriptor.idProduct);
|
|
if ((status = request_firmware(&fw_p, buf, &dev->dev)) != 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 {
|
|
dbg("%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;
|
|
}
|
|
|
|
dbg("%s - download successful", __func__);
|
|
|
|
return 0;
|
|
}
|