11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Digi AccelePort USB-4 and USB-2 Serial Converters 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Copyright 2000 by Digi International 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* This program is free software; you can redistribute it and/or modify 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* it under the terms of the GNU General Public License as published by 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* the Free Software Foundation; either version 2 of the License, or 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* (at your option) any later version. 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Shamelessly based on Brian Warner's keyspan_pda.c and Greg Kroah-Hartman's 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* usb-serial driver. 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Peter Berger (pberger@brimson.com) 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Al Borchers (borchers@steinerpoint.com) 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_driver.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_flip.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/spinlock.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/workqueue.h> 2841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox#include <linux/uaccess.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/usb.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/wait.h> 31a969888ce91673c7f4b86520d851a6f0d5a5fa7dGreg Kroah-Hartman#include <linux/usb/serial.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Defines */ 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version Information 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_VERSION "v1.80.1.2" 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_AUTHOR "Peter Berger <pberger@brimson.com>, Al Borchers <borchers@steinerpoint.com>" 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_DESC "Digi AccelePort USB-2/USB-4 Serial Converter driver" 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* port output buffer length -- must be <= transfer buffer length - 2 */ 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* so we can be sure to send the full buffer in one urb */ 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_OUT_BUF_SIZE 8 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* port input buffer length -- must be >= transfer buffer length - 3 */ 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* so we can be sure to hold at least one full buffer from one urb */ 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_IN_BUF_SIZE 64 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* retry timeout while sleeping */ 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RETRY_TIMEOUT (HZ/10) 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* timeout while waiting for tty output to drain in close */ 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* this delay is used twice in close, so the total delay could */ 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* be twice this value */ 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CLOSE_TIMEOUT (5*HZ) 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* AccelePort USB Defines */ 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ids */ 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_VENDOR_ID 0x05c5 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_2_ID 0x0002 /* USB-2 */ 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_4_ID 0x0004 /* USB-4 */ 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* commands 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * "INB": can be used on the in-band endpoint 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * "OOB": can be used on the out-of-band endpoint 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_BAUD_RATE 0 /* INB, OOB */ 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_WORD_SIZE 1 /* INB, OOB */ 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_PARITY 2 /* INB, OOB */ 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_STOP_BITS 3 /* INB, OOB */ 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_INPUT_FLOW_CONTROL 4 /* INB, OOB */ 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_OUTPUT_FLOW_CONTROL 5 /* INB, OOB */ 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_DTR_SIGNAL 6 /* INB, OOB */ 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SET_RTS_SIGNAL 7 /* INB, OOB */ 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_READ_INPUT_SIGNALS 8 /* OOB */ 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_IFLUSH_FIFO 9 /* OOB */ 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_RECEIVE_ENABLE 10 /* INB, OOB */ 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_BREAK_CONTROL 11 /* INB, OOB */ 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_LOCAL_LOOPBACK 12 /* INB, OOB */ 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_TRANSMIT_IDLE 13 /* INB, OOB */ 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_READ_UART_REGISTER 14 /* OOB */ 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_WRITE_UART_REGISTER 15 /* INB, OOB */ 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_AND_UART_REGISTER 16 /* INB, OOB */ 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_OR_UART_REGISTER 17 /* INB, OOB */ 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_SEND_DATA 18 /* INB */ 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_RECEIVE_DATA 19 /* INB */ 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_RECEIVE_DISABLE 20 /* INB */ 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_CMD_GET_PORT_TYPE 21 /* OOB */ 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* baud rates */ 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_50 0 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_75 1 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_110 2 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_150 3 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_200 4 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_300 5 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_600 6 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_1200 7 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_1800 8 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_2400 9 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_4800 10 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_7200 11 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_9600 12 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_14400 13 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_19200 14 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_28800 15 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_38400 16 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_57600 17 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_76800 18 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_115200 19 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_153600 20 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_230400 21 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAUD_460800 22 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* arguments */ 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_WORD_SIZE_5 0 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_WORD_SIZE_6 1 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_WORD_SIZE_7 2 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_WORD_SIZE_8 3 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_NONE 0 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_ODD 1 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_EVEN 2 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_MARK 3 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_SPACE 4 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_STOP_BITS_1 0 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_STOP_BITS_2 1 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_INPUT_FLOW_CONTROL_XON_XOFF 1 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_INPUT_FLOW_CONTROL_RTS 2 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_INPUT_FLOW_CONTROL_DTR 4 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF 1 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_OUTPUT_FLOW_CONTROL_CTS 2 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_OUTPUT_FLOW_CONTROL_DSR 4 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_DTR_INACTIVE 0 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_DTR_ACTIVE 1 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_DTR_INPUT_FLOW_CONTROL 2 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RTS_INACTIVE 0 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RTS_ACTIVE 1 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RTS_INPUT_FLOW_CONTROL 2 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RTS_TOGGLE 3 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_FLUSH_TX 1 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_FLUSH_RX 2 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_RESUME_TX 4 /* clears xoff condition */ 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_TRANSMIT_NOT_IDLE 0 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_TRANSMIT_IDLE 1 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_DISABLE 0 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_ENABLE 1 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_DEASSERT 0 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_ASSERT 1 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* in band status codes */ 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_OVERRUN_ERROR 4 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_PARITY_ERROR 8 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_FRAMING_ERROR 16 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BREAK_ERROR 32 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* out of band status */ 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_NO_ERROR 0 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAD_FIRST_PARAMETER 1 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_BAD_SECOND_PARAMETER 2 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_INVALID_LINE 3 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_INVALID_OPCODE 4 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* input signals */ 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_SLOT 1 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_ERR 2 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_BUSY 4 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_PE 8 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_CTS 16 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_DSR 32 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_RI 64 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DIGI_READ_INPUT_SIGNALS_DCD 128 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Structures */ 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct digi_serial { 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t ds_serial_lock; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *ds_oob_port; /* out-of-band port */ 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ds_oob_port_num; /* index of out-of-band port */ 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ds_device_started; 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct digi_port { 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t dp_port_lock; 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_port_num; 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_out_buf_len; 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char dp_out_buf[DIGI_OUT_BUF_SIZE]; 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_write_urb_in_use; 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int dp_modem_signals; 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t dp_modem_change_wait; 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_transmit_idle; 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t dp_transmit_idle_wait; 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_throttled; 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int dp_throttle_restart; 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t dp_flush_wait; 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t dp_close_wait; /* wait queue for close */ 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct work_struct dp_wakeup_work; 211c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells struct usb_serial_port *dp_port; 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Local Function Declarations */ 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 217c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_wakeup_write(struct usb_serial_port *port); 218c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void digi_wakeup_write_lock(struct work_struct *work); 219c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write_oob_command(struct usb_serial_port *port, 220c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned char *buf, int count, int interruptible); 221c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write_inb_command(struct usb_serial_port *port, 222c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned char *buf, int count, unsigned long timeout); 223c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_set_modem_signals(struct usb_serial_port *port, 224c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int modem_signals, int interruptible); 225c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_transmit_idle(struct usb_serial_port *port, 226c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned long timeout); 22741ad427da1f9303e2e34811398b31c999c3d39d1Alan Coxstatic void digi_rx_throttle(struct tty_struct *tty); 22841ad427da1f9303e2e34811398b31c999c3d39d1Alan Coxstatic void digi_rx_unthrottle(struct tty_struct *tty); 22995da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic void digi_set_termios(struct tty_struct *tty, 23095da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port, struct ktermios *old_termios); 23195da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic void digi_break_ctl(struct tty_struct *tty, int break_state); 23260b33c133ca0b7c0b6072c87234b63fee6e80558Alan Coxstatic int digi_tiocmget(struct tty_struct *tty); 23320b9d17715017ae4dd4ec87fabc36d33b9de708eAlan Coxstatic int digi_tiocmset(struct tty_struct *tty, unsigned int set, 23420b9d17715017ae4dd4ec87fabc36d33b9de708eAlan Cox unsigned int clear); 23595da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic int digi_write(struct tty_struct *tty, struct usb_serial_port *port, 23620b9d17715017ae4dd4ec87fabc36d33b9de708eAlan Cox const unsigned char *buf, int count); 237c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_write_bulk_callback(struct urb *urb); 23895da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic int digi_write_room(struct tty_struct *tty); 23995da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic int digi_chars_in_buffer(struct tty_struct *tty); 240a509a7e478e4766114d69f12d19d644ac63e9765Alan Coxstatic int digi_open(struct tty_struct *tty, struct usb_serial_port *port); 241335f8514f200e63d689113d29cb7253a5c282967Alan Coxstatic void digi_close(struct usb_serial_port *port); 242335f8514f200e63d689113d29cb7253a5c282967Alan Coxstatic void digi_dtr_rts(struct usb_serial_port *port, int on); 243c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_startup_device(struct usb_serial *serial); 244c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_startup(struct usb_serial *serial); 245f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Sternstatic void digi_disconnect(struct usb_serial *serial); 246f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Sternstatic void digi_release(struct usb_serial *serial); 247c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_read_bulk_callback(struct urb *urb); 248c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_read_inb_callback(struct urb *urb); 249c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_read_oob_callback(struct urb *urb); 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Statics */ 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25490ab5ee94171b3e28de6bb42ee30b527014e0be7Rusty Russellstatic bool debug; 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2567d40d7e85a25e01948bcb4dc3eda1355af318337Németh Mártonstatic const struct usb_device_id id_table_combined[] = { 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(DIGI_VENDOR_ID, DIGI_2_ID) }, 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(DIGI_VENDOR_ID, DIGI_4_ID) }, 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { } /* Terminating entry */ 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2627d40d7e85a25e01948bcb4dc3eda1355af318337Németh Mártonstatic const struct usb_device_id id_table_2[] = { 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(DIGI_VENDOR_ID, DIGI_2_ID) }, 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { } /* Terminating entry */ 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2677d40d7e85a25e01948bcb4dc3eda1355af318337Németh Mártonstatic const struct usb_device_id id_table_4[] = { 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(DIGI_VENDOR_ID, DIGI_4_ID) }, 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { } /* Terminating entry */ 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27241ad427da1f9303e2e34811398b31c999c3d39d1Alan CoxMODULE_DEVICE_TABLE(usb, id_table_combined); 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_driver digi_driver = { 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "digi_acceleport", 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .probe = usb_serial_probe, 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .disconnect = usb_serial_disconnect, 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .id_table = id_table_combined, 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* device info needed for the Digi serial converter */ 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 284ea65370d025f5005649e5cb37c4d025e92c6fc38Greg Kroah-Hartmanstatic struct usb_serial_driver digi_acceleport_2_device = { 28518fcac353fdc7cd072b0d24c8667042e675a4c11Greg Kroah-Hartman .driver = { 286269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .owner = THIS_MODULE, 287269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .name = "digi_2", 28818fcac353fdc7cd072b0d24c8667042e675a4c11Greg Kroah-Hartman }, 289269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .description = "Digi 2 port USB adapter", 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .id_table = id_table_2, 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .num_ports = 3, 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = digi_open, 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = digi_close, 294335f8514f200e63d689113d29cb7253a5c282967Alan Cox .dtr_rts = digi_dtr_rts, 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = digi_write, 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = digi_write_room, 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_bulk_callback = digi_write_bulk_callback, 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read_bulk_callback = digi_read_bulk_callback, 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = digi_chars_in_buffer, 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = digi_rx_throttle, 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = digi_rx_unthrottle, 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = digi_set_termios, 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .break_ctl = digi_break_ctl, 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = digi_tiocmget, 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = digi_tiocmset, 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .attach = digi_startup, 307f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern .disconnect = digi_disconnect, 308f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern .release = digi_release, 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 311ea65370d025f5005649e5cb37c4d025e92c6fc38Greg Kroah-Hartmanstatic struct usb_serial_driver digi_acceleport_4_device = { 31218fcac353fdc7cd072b0d24c8667042e675a4c11Greg Kroah-Hartman .driver = { 313269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .owner = THIS_MODULE, 314269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .name = "digi_4", 31518fcac353fdc7cd072b0d24c8667042e675a4c11Greg Kroah-Hartman }, 316269bda1c123c7caf88e1deb2264f9086f0344192Greg Kroah-Hartman .description = "Digi 4 port USB adapter", 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .id_table = id_table_4, 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .num_ports = 4, 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = digi_open, 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = digi_close, 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = digi_write, 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = digi_write_room, 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_bulk_callback = digi_write_bulk_callback, 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read_bulk_callback = digi_read_bulk_callback, 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = digi_chars_in_buffer, 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = digi_rx_throttle, 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = digi_rx_unthrottle, 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = digi_set_termios, 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .break_ctl = digi_break_ctl, 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = digi_tiocmget, 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = digi_tiocmset, 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .attach = digi_startup, 333f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern .disconnect = digi_disconnect, 334f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern .release = digi_release, 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33797b6b6d2339f67eb17d954930a908b762af66228Alan Sternstatic struct usb_serial_driver * const serial_drivers[] = { 33897b6b6d2339f67eb17d954930a908b762af66228Alan Stern &digi_acceleport_2_device, &digi_acceleport_4_device, NULL 33997b6b6d2339f67eb17d954930a908b762af66228Alan Stern}; 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Functions */ 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 34441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Cond Wait Interruptible Timeout Irqrestore 34541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * 34641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Do spin_unlock_irqrestore and interruptible_sleep_on_timeout 34741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * so that wake ups are not lost if they occur between the unlock 34841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * and the sleep. In other words, spin_unlock_irqrestore and 34941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * interruptible_sleep_on_timeout are "atomic" with respect to 35041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * wake ups. This is used to implement condition variables. 35141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * 35241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * interruptible_sleep_on_timeout is deprecated and has been replaced 35341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * with the equivalent code. 35441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox */ 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 356c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic long cond_wait_interruptible_timeout_irqrestore( 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t *q, long timeout, 358c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spinlock_t *lock, unsigned long flags) 3595a33956a300dcb48a3b125cae437ad6f5c718282Harvey Harrison__releases(lock) 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEFINE_WAIT(wait); 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 36345f23f189ca66d98b1f8b7f3d30a194d3188039dNishanth Aravamudan prepare_to_wait(q, &wait, TASK_INTERRUPTIBLE); 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(lock, flags); 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout = schedule_timeout(timeout); 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finish_wait(q, &wait); 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return timeout; 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 37341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Digi Wakeup Write 37441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * 37541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Wake up port, line discipline, and tty processes sleeping 37641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * on writes. 37741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox */ 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 379c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void digi_wakeup_write_lock(struct work_struct *work) 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 38141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox struct digi_port *priv = 38241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox container_of(work, struct digi_port, dp_wakeup_work); 383c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells struct usb_serial_port *port = priv->dp_port; 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 386c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 387c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_wakeup_write(port); 388c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 391c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_wakeup_write(struct usb_serial_port *port) 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3934a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox struct tty_struct *tty = tty_port_tty_get(&port->port); 3944287341d4dba27ef8048f589e3c0bc683c9f2017Alan Cox if (tty) { 3954287341d4dba27ef8048f589e3c0bc683c9f2017Alan Cox tty_wakeup(tty); 3964287341d4dba27ef8048f589e3c0bc683c9f2017Alan Cox tty_kref_put(tty); 3974287341d4dba27ef8048f589e3c0bc683c9f2017Alan Cox } 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 40241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Digi Write OOB Command 40341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * 40441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Write commands on the out of band port. Commands are 4 40541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * bytes each, multiple commands can be sent at once, and 40641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * no command will be split across USB packets. Returns 0 40741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * if successful, -EINTR if interrupted while sleeping and 40841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * the interruptible flag is true, or a negative error 40941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * returned by usb_submit_urb. 41041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox */ 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 412c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write_oob_command(struct usb_serial_port *port, 413c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned char *buf, int count, int interruptible) 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret = 0; 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len; 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *oob_port = (struct usb_serial_port *)((struct digi_serial *)(usb_get_serial_data(port->serial)))->ds_oob_port; 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *oob_priv = usb_get_serial_port_data(oob_port); 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 422c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write_oob_command: TOP: port=%d, count=%d", oob_priv->dp_port_num, count); 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 424c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&oob_priv->dp_port_lock, flags); 42541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox while (count > 0) { 42650de36f7af3b1d791c402478210790c582126fe5Greg Kroah-Hartman while (oob_priv->dp_write_urb_in_use) { 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cond_wait_interruptible_timeout_irqrestore( 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &oob_port->write_wait, DIGI_RETRY_TIMEOUT, 429c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox &oob_priv->dp_port_lock, flags); 430c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (interruptible && signal_pending(current)) 431c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -EINTR; 432c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&oob_priv->dp_port_lock, flags); 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* len must be a multiple of 4, so commands are not split */ 436c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox len = min(count, oob_port->bulk_out_size); 437c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (len > 4) 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len &= ~3; 439c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(oob_port->write_urb->transfer_buffer, buf, len); 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oob_port->write_urb->transfer_buffer_length = len; 44141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC); 44241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (ret == 0) { 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oob_priv->dp_write_urb_in_use = 1; 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= len; 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf += len; 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 448c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&oob_priv->dp_port_lock, flags); 449c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (ret) 450194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, "%s: usb_submit_urb failed, ret=%d\n", 451194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman __func__, ret); 452c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 45841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Digi Write In Band Command 45941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * 46041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Write commands on the given port. Commands are 4 46141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * bytes each, multiple commands can be sent at once, and 46241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * no command will be split across USB packets. If timeout 46341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * is non-zero, write in band command will return after 46441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * waiting unsuccessfully for the URB status to clear for 46541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * timeout ticks. Returns 0 if successful, or a negative 46641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * error returned by digi_write. 46741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox */ 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 469c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_write_inb_command(struct usb_serial_port *port, 470c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned char *buf, int count, unsigned long timeout) 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret = 0; 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len; 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = port->write_urb->transfer_buffer; 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 478c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write_inb_command: TOP: port=%d, count=%d", 479c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, count); 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 481c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (timeout) 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout += jiffies; 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout = ULONG_MAX; 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 486c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 48741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox while (count > 0 && ret == 0) { 48850de36f7af3b1d791c402478210790c582126fe5Greg Kroah-Hartman while (priv->dp_write_urb_in_use && 48950de36f7af3b1d791c402478210790c582126fe5Greg Kroah-Hartman time_before(jiffies, timeout)) { 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cond_wait_interruptible_timeout_irqrestore( 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &port->write_wait, DIGI_RETRY_TIMEOUT, 492c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox &priv->dp_port_lock, flags); 493c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (signal_pending(current)) 494c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -EINTR; 495c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* len must be a multiple of 4 and small enough to */ 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* guarantee the write will send buffered data first, */ 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* so commands are in order with data and not split */ 501c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox len = min(count, port->bulk_out_size-2-priv->dp_out_buf_len); 502c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (len > 4) 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len &= ~3; 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* write any buffered data first */ 506c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (priv->dp_out_buf_len > 0) { 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[0] = DIGI_CMD_SEND_DATA; 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[1] = priv->dp_out_buf_len; 509c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(data + 2, priv->dp_out_buf, 510c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_out_buf_len); 511c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(data + 2 + priv->dp_out_buf_len, buf, len); 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->transfer_buffer_length 513c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox = priv->dp_out_buf_len + 2 + len; 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 515c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(data, buf, len); 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->transfer_buffer_length = len; 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 51941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox ret = usb_submit_urb(port->write_urb, GFP_ATOMIC); 52041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (ret == 0) { 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 1; 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_out_buf_len = 0; 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count -= len; 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf += len; 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 528c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 530c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (ret) 531194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, 532194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman "%s: usb_submit_urb failed, ret=%d, port=%d\n", 533441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, ret, priv->dp_port_num); 534c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 53941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Digi Set Modem Signals 54041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * 54141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Sets or clears DTR and RTS on the port, according to the 54241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * modem_signals argument. Use TIOCM_DTR and TIOCM_RTS flags 54341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * for the modem_signals argument. Returns 0 if successful, 54441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * -EINTR if interrupted while sleeping, or a non-zero error 54541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * returned by usb_submit_urb. 54641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox */ 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 548c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_set_modem_signals(struct usb_serial_port *port, 549c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int modem_signals, int interruptible) 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *port_priv = usb_get_serial_port_data(port); 55441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox struct usb_serial_port *oob_port = (struct usb_serial_port *) ((struct digi_serial *)(usb_get_serial_data(port->serial)))->ds_oob_port; 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *oob_priv = usb_get_serial_port_data(oob_port); 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = oob_port->write_urb->transfer_buffer; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 560c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_set_modem_signals: TOP: port=%d, modem_signals=0x%x", 561c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox port_priv->dp_port_num, modem_signals); 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 563c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&oob_priv->dp_port_lock, flags); 564c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&port_priv->dp_port_lock); 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 56650de36f7af3b1d791c402478210790c582126fe5Greg Kroah-Hartman while (oob_priv->dp_write_urb_in_use) { 567c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&port_priv->dp_port_lock); 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cond_wait_interruptible_timeout_irqrestore( 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &oob_port->write_wait, DIGI_RETRY_TIMEOUT, 570c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox &oob_priv->dp_port_lock, flags); 571c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (interruptible && signal_pending(current)) 572c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -EINTR; 573c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&oob_priv->dp_port_lock, flags); 574c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&port_priv->dp_port_lock); 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[0] = DIGI_CMD_SET_DTR_SIGNAL; 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[1] = port_priv->dp_port_num; 57841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox data[2] = (modem_signals & TIOCM_DTR) ? 57941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox DIGI_DTR_ACTIVE : DIGI_DTR_INACTIVE; 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[3] = 0; 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[4] = DIGI_CMD_SET_RTS_SIGNAL; 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[5] = port_priv->dp_port_num; 58341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox data[6] = (modem_signals & TIOCM_RTS) ? 58441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox DIGI_RTS_ACTIVE : DIGI_RTS_INACTIVE; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data[7] = 0; 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oob_port->write_urb->transfer_buffer_length = 8; 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 58941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC); 59041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (ret == 0) { 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds oob_priv->dp_write_urb_in_use = 1; 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port_priv->dp_modem_signals = 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (port_priv->dp_modem_signals&~(TIOCM_DTR|TIOCM_RTS)) 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | (modem_signals&(TIOCM_DTR|TIOCM_RTS)); 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 596c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&port_priv->dp_port_lock); 597c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&oob_priv->dp_port_lock, flags); 598c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (ret) 599194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, "%s: usb_submit_urb failed, ret=%d\n", 600194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman __func__, ret); 601c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 60541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Digi Transmit Idle 60641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * 60741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Digi transmit idle waits, up to timeout ticks, for the transmitter 60841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * to go idle. It returns 0 if successful or a negative error. 60941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * 61041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * There are race conditions here if more than one process is calling 61141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * digi_transmit_idle on the same port at the same time. However, this 61241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * is only called from close, and only one process can be in close on a 61341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * port at a time, so its ok. 61441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox */ 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 616c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_transmit_idle(struct usb_serial_port *port, 617c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned long timeout) 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char buf[2]; 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 624c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_transmit_idle = 0; 626c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = DIGI_CMD_TRANSMIT_IDLE; 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[1] = 0; 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout += jiffies; 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 63341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox ret = digi_write_inb_command(port, buf, 2, timeout - jiffies); 63441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (ret != 0) 635c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 637c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 63941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox while (time_before(jiffies, timeout) && !priv->dp_transmit_idle) { 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cond_wait_interruptible_timeout_irqrestore( 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &priv->dp_transmit_idle_wait, DIGI_RETRY_TIMEOUT, 642c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox &priv->dp_port_lock, flags); 643c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (signal_pending(current)) 644c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -EINTR; 645c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_transmit_idle = 0; 648c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 649c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 65495da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic void digi_rx_throttle(struct tty_struct *tty) 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 65795da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 661c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_rx_throttle: TOP: port=%d", priv->dp_port_num); 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* stop receiving characters by not resubmitting the read urb */ 664c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_throttled = 1; 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_throttle_restart = 0; 667c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 67195da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic void digi_rx_unthrottle(struct tty_struct *tty) 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret = 0; 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 67595da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 678c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_rx_unthrottle: TOP: port=%d", priv->dp_port_num); 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 680c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* restart read chain */ 6835833041f1b130e5823a99d03b14538282e5ad345Johan Hovold if (priv->dp_throttle_restart) 684c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox ret = usb_submit_urb(port->read_urb, GFP_ATOMIC); 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 686ba6b702f85a61561d329c4c11d3ed95604924f9aJohan Hovold /* turn throttle off */ 687ba6b702f85a61561d329c4c11d3ed95604924f9aJohan Hovold priv->dp_throttled = 0; 688ba6b702f85a61561d329c4c11d3ed95604924f9aJohan Hovold priv->dp_throttle_restart = 0; 689ba6b702f85a61561d329c4c11d3ed95604924f9aJohan Hovold 690c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 692c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (ret) 693194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, 694194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman "%s: usb_submit_urb failed, ret=%d, port=%d\n", 695441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, ret, priv->dp_port_num); 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 69941ad427da1f9303e2e34811398b31c999c3d39d1Alan Coxstatic void digi_set_termios(struct tty_struct *tty, 70095da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port, struct ktermios *old_termios) 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 703c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int iflag = tty->termios->c_iflag; 704c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox unsigned int cflag = tty->termios->c_cflag; 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int old_iflag = old_termios->c_iflag; 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int old_cflag = old_termios->c_cflag; 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char buf[32]; 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int modem_signals; 70941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox int arg, ret; 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i = 0; 711c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox speed_t baud; 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 713c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_set_termios: TOP: port=%d, iflag=0x%x, old_iflag=0x%x, cflag=0x%x, old_cflag=0x%x", priv->dp_port_num, iflag, old_iflag, cflag, old_cflag); 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set baud rate */ 71641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox baud = tty_get_baud_rate(tty); 71741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (baud != tty_termios_baud_rate(old_termios)) { 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = -1; 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* reassert DTR and (maybe) RTS on transition from B0 */ 721c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((old_cflag&CBAUD) == B0) { 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* don't set RTS if using hardware flow control */ 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* and throttling input */ 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds modem_signals = TIOCM_DTR; 725c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (!(tty->termios->c_cflag & CRTSCTS) || 726c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox !test_bit(TTY_THROTTLED, &tty->flags)) 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds modem_signals |= TIOCM_RTS; 728c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_set_modem_signals(port, modem_signals, 1); 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 730c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox switch (baud) { 73141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox /* drop DTR and RTS on transition to B0 */ 73241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 0: digi_set_modem_signals(port, 0, 1); break; 73341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 50: arg = DIGI_BAUD_50; break; 73441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 75: arg = DIGI_BAUD_75; break; 73541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 110: arg = DIGI_BAUD_110; break; 73641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 150: arg = DIGI_BAUD_150; break; 73741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 200: arg = DIGI_BAUD_200; break; 73841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 300: arg = DIGI_BAUD_300; break; 73941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 600: arg = DIGI_BAUD_600; break; 74041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 1200: arg = DIGI_BAUD_1200; break; 74141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 1800: arg = DIGI_BAUD_1800; break; 74241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 2400: arg = DIGI_BAUD_2400; break; 74341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 4800: arg = DIGI_BAUD_4800; break; 74441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 9600: arg = DIGI_BAUD_9600; break; 74541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 19200: arg = DIGI_BAUD_19200; break; 74641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 38400: arg = DIGI_BAUD_38400; break; 74741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 57600: arg = DIGI_BAUD_57600; break; 74841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 115200: arg = DIGI_BAUD_115200; break; 74941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 230400: arg = DIGI_BAUD_230400; break; 75041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox case 460800: arg = DIGI_BAUD_460800; break; 75141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox default: 75241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox arg = DIGI_BAUD_9600; 75341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox baud = 9600; 75441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox break; 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 756c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (arg != -1) { 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_BAUD_RATE; 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set parity */ 7647fa36a994cb4298f29994a248ced831be8dc7051Alan Cox tty->termios->c_cflag &= ~CMSPAR; 7657fa36a994cb4298f29994a248ced831be8dc7051Alan Cox 766c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((cflag&(PARENB|PARODD)) != (old_cflag&(PARENB|PARODD))) { 767c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (cflag&PARENB) { 768c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (cflag&PARODD) 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_PARITY_ODD; 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_PARITY_EVEN; 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_PARITY_NONE; 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_PARITY; 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set word size */ 781c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((cflag&CSIZE) != (old_cflag&CSIZE)) { 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = -1; 783c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox switch (cflag&CSIZE) { 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS5: arg = DIGI_WORD_SIZE_5; break; 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS6: arg = DIGI_WORD_SIZE_6; break; 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS7: arg = DIGI_WORD_SIZE_7; break; 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS8: arg = DIGI_WORD_SIZE_8; break; 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 789c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_set_termios: can't handle word size %d", 790c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox (cflag&CSIZE)); 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 794c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (arg != -1) { 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_WORD_SIZE; 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set stop bits */ 804c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((cflag&CSTOPB) != (old_cflag&CSTOPB)) { 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 806c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((cflag&CSTOPB)) 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_STOP_BITS_2; 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_STOP_BITS_1; 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_STOP_BITS; 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set input flow control */ 819c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if ((iflag&IXOFF) != (old_iflag&IXOFF) 820c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox || (cflag&CRTSCTS) != (old_cflag&CRTSCTS)) { 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = 0; 822c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (iflag&IXOFF) 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg |= DIGI_INPUT_FLOW_CONTROL_XON_XOFF; 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg &= ~DIGI_INPUT_FLOW_CONTROL_XON_XOFF; 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 827c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (cflag&CRTSCTS) { 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg |= DIGI_INPUT_FLOW_CONTROL_RTS; 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* On USB-4 it is necessary to assert RTS prior */ 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* to selecting RTS input flow control. */ 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_RTS_SIGNAL; 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_RTS_ACTIVE; 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg &= ~DIGI_INPUT_FLOW_CONTROL_RTS; 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_INPUT_FLOW_CONTROL; 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set output flow control */ 8477fa36a994cb4298f29994a248ced831be8dc7051Alan Cox if ((iflag & IXON) != (old_iflag & IXON) 8487fa36a994cb4298f29994a248ced831be8dc7051Alan Cox || (cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = 0; 8507fa36a994cb4298f29994a248ced831be8dc7051Alan Cox if (iflag & IXON) 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg |= DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF; 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg &= ~DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF; 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8557fa36a994cb4298f29994a248ced831be8dc7051Alan Cox if (cflag & CRTSCTS) { 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg |= DIGI_OUTPUT_FLOW_CONTROL_CTS; 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg &= ~DIGI_OUTPUT_FLOW_CONTROL_CTS; 859c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox tty->hw_stopped = 0; 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_SET_OUTPUT_FLOW_CONTROL; 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set receive enable/disable */ 8697fa36a994cb4298f29994a248ced831be8dc7051Alan Cox if ((cflag & CREAD) != (old_cflag & CREAD)) { 8707fa36a994cb4298f29994a248ced831be8dc7051Alan Cox if (cflag & CREAD) 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_ENABLE; 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds arg = DIGI_DISABLE; 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = DIGI_CMD_RECEIVE_ENABLE; 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = priv->dp_port_num; 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = arg; 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[i++] = 0; 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 88041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox ret = digi_write_oob_command(port, buf, i, 1); 88141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (ret != 0) 882c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_set_termios: write oob failed, ret=%d", ret); 8837fa36a994cb4298f29994a248ced831be8dc7051Alan Cox tty_encode_baud_rate(tty, baud, baud); 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 88795da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic void digi_break_ctl(struct tty_struct *tty, int break_state) 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 88995da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char buf[4]; 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = DIGI_CMD_BREAK_CONTROL; 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[1] = 2; /* length */ 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[2] = break_state ? 1 : 0; 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[3] = 0; /* pad */ 896c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_write_inb_command(port, buf, 4, 0); 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 90060b33c133ca0b7c0b6072c87234b63fee6e80558Alan Coxstatic int digi_tiocmget(struct tty_struct *tty) 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 90295da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int val; 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 907441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s: TOP: port=%d", __func__, priv->dp_port_num); 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 909c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = priv->dp_modem_signals; 911c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return val; 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 91620b9d17715017ae4dd4ec87fabc36d33b9de708eAlan Coxstatic int digi_tiocmset(struct tty_struct *tty, 91720b9d17715017ae4dd4ec87fabc36d33b9de708eAlan Cox unsigned int set, unsigned int clear) 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 91995da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int val; 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 924441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s: TOP: port=%d", __func__, priv->dp_port_num); 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 926c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = (priv->dp_modem_signals & ~clear) | set; 928c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 929c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return digi_set_modem_signals(port, val, 1); 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 93395da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic int digi_write(struct tty_struct *tty, struct usb_serial_port *port, 93495da310e66ee8090119596c70ca8432e57f9a97fAlan Cox const unsigned char *buf, int count) 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 93741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox int ret, data_len, new_len; 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = port->write_urb->transfer_buffer; 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 942c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write: TOP: port=%d, count=%d, in_interrupt=%ld", 943c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, count, in_interrupt()); 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* copy user data (which can sleep) before getting spin lock */ 946c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox count = min(count, port->bulk_out_size-2); 947c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox count = min(64, count); 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* be sure only one write proceeds at a time */ 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* there are races on the port private buffer */ 951c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for urb status clear to submit another urb */ 95450de36f7af3b1d791c402478210790c582126fe5Greg Kroah-Hartman if (priv->dp_write_urb_in_use) { 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* buffer data if count is 1 (probably put_char) if possible */ 956c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (count == 1 && priv->dp_out_buf_len < DIGI_OUT_BUF_SIZE) { 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_out_buf[priv->dp_out_buf_len++] = *buf; 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_len = 1; 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_len = 0; 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 962c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 963c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return new_len; 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allow space for any buffered data and for new data, up to */ 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* transfer buffer size - 2 (for command and length bytes) */ 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds new_len = min(count, port->bulk_out_size-2-priv->dp_out_buf_len); 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data_len = new_len + priv->dp_out_buf_len; 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 971c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (data_len == 0) { 972c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 973c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->transfer_buffer_length = data_len+2; 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *data++ = DIGI_CMD_SEND_DATA; 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *data++ = data_len; 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* copy in buffered data first */ 982c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(data, priv->dp_out_buf, priv->dp_out_buf_len); 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data += priv->dp_out_buf_len; 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* copy in new data */ 986c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox memcpy(data, buf, new_len); 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 98841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox ret = usb_submit_urb(port->write_urb, GFP_ATOMIC); 98941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (ret == 0) { 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 1; 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = new_len; 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_out_buf_len = 0; 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* return length of new data written, or error */ 996c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 997c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (ret < 0) 99822a416c4e0f2179b57028e084ac0ed2c110333bdJohan Hovold dev_err_console(port, 999194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman "%s: usb_submit_urb failed, ret=%d, port=%d\n", 1000441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, ret, priv->dp_port_num); 1001c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write: returning %d", ret); 1002c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 100441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox} 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1006c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_write_bulk_callback(struct urb *urb) 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1009cdc97792289179974af6dda781c855696358d307Ming Lei struct usb_serial_port *port = urb->context; 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial; 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv; 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_serial *serial_priv; 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret = 0; 101485d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman int status = urb->status; 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 101650de36f7af3b1d791c402478210790c582126fe5Greg Kroah-Hartman dbg("digi_write_bulk_callback: TOP, status=%d", status); 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* port and serial sanity check */ 101941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (port == NULL || (priv = usb_get_serial_port_data(port)) == NULL) { 1020109f34e71b9049a57f6cdf3f1da6bee2b722b259Julia Lawall pr_err("%s: port or port->private is NULL, status=%d\n", 1021194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman __func__, status); 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial = port->serial; 102541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (serial == NULL || (serial_priv = usb_get_serial_data(serial)) == NULL) { 1026194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, 1027194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman "%s: serial or serial->private is NULL, status=%d\n", 1028194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman __func__, status); 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle oob callback */ 1033c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (priv->dp_port_num == serial_priv->ds_oob_port_num) { 1034c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write_bulk_callback: oob callback"); 1035c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&priv->dp_port_lock); 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 0; 1037c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox wake_up_interruptible(&port->write_wait); 1038c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&priv->dp_port_lock); 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10421f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern /* try to send any buffered data on this port */ 1043c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&priv->dp_port_lock); 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 0; 10451f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern if (priv->dp_out_buf_len > 0) { 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *((unsigned char *)(port->write_urb->transfer_buffer)) 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds = (unsigned char)DIGI_CMD_SEND_DATA; 104841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox *((unsigned char *)(port->write_urb->transfer_buffer) + 1) 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds = (unsigned char)priv->dp_out_buf_len; 105041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox port->write_urb->transfer_buffer_length = 105141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox priv->dp_out_buf_len + 2; 105241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox memcpy(port->write_urb->transfer_buffer + 2, priv->dp_out_buf, 1053c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_out_buf_len); 105441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox ret = usb_submit_urb(port->write_urb, GFP_ATOMIC); 105541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (ret == 0) { 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 1; 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_out_buf_len = 0; 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wake up processes sleeping on writes immediately */ 1061c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_wakeup_write(port); 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* also queue up a wakeup at scheduler time, in case we */ 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* lost the race in write_chan(). */ 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule_work(&priv->dp_wakeup_work); 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1066c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&priv->dp_port_lock); 10671f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern if (ret && ret != -EPERM) 106822a416c4e0f2179b57028e084ac0ed2c110333bdJohan Hovold dev_err_console(port, 1069194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman "%s: usb_submit_urb failed, ret=%d, port=%d\n", 1070441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, ret, priv->dp_port_num); 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 107395da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic int digi_write_room(struct tty_struct *tty) 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 107595da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 107795da310e66ee8090119596c70ca8432e57f9a97fAlan Cox int room; 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags = 0; 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1080c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_irqsave(&priv->dp_port_lock, flags); 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 108250de36f7af3b1d791c402478210790c582126fe5Greg Kroah-Hartman if (priv->dp_write_urb_in_use) 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds room = 0; 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds room = port->bulk_out_size - 2 - priv->dp_out_buf_len; 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1087c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock_irqrestore(&priv->dp_port_lock, flags); 1088c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_write_room: port=%d, room=%d", priv->dp_port_num, room); 1089c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return room; 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 109395da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic int digi_chars_in_buffer(struct tty_struct *tty) 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 109595da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 109850de36f7af3b1d791c402478210790c582126fe5Greg Kroah-Hartman if (priv->dp_write_urb_in_use) { 1099c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_chars_in_buffer: port=%d, chars=%d", 1100c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, port->bulk_out_size - 2); 1101c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox /* return(port->bulk_out_size - 2); */ 1102c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 256; 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1104c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_chars_in_buffer: port=%d, chars=%d", 1105c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, priv->dp_out_buf_len); 1106c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return priv->dp_out_buf_len; 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1111335f8514f200e63d689113d29cb7253a5c282967Alan Coxstatic void digi_dtr_rts(struct usb_serial_port *port, int on) 1112335f8514f200e63d689113d29cb7253a5c282967Alan Cox{ 1113335f8514f200e63d689113d29cb7253a5c282967Alan Cox /* Adjust DTR and RTS */ 1114335f8514f200e63d689113d29cb7253a5c282967Alan Cox digi_set_modem_signals(port, on * (TIOCM_DTR|TIOCM_RTS), 1); 1115335f8514f200e63d689113d29cb7253a5c282967Alan Cox} 1116335f8514f200e63d689113d29cb7253a5c282967Alan Cox 1117a509a7e478e4766114d69f12d19d644ac63e9765Alan Coxstatic int digi_open(struct tty_struct *tty, struct usb_serial_port *port) 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char buf[32]; 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 1122606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox struct ktermios not_termios; 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11241f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern dbg("digi_open: TOP: port=%d", priv->dp_port_num); 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* be sure the device is started up */ 1127c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (digi_startup_device(port->serial) != 0) 1128c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -ENXIO; 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* read modem signals automatically whenever they change */ 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = DIGI_CMD_READ_INPUT_SIGNALS; 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[1] = priv->dp_port_num; 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[2] = DIGI_ENABLE; 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[3] = 0; 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* flush fifos */ 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[4] = DIGI_CMD_IFLUSH_FIFO; 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[5] = priv->dp_port_num; 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[6] = DIGI_FLUSH_TX | DIGI_FLUSH_RX; 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[7] = 0; 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 114241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox ret = digi_write_oob_command(port, buf, 8, 1); 114341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (ret != 0) 1144c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_open: write oob failed, ret=%d", ret); 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set termios settings */ 114795da310e66ee8090119596c70ca8432e57f9a97fAlan Cox if (tty) { 114895da310e66ee8090119596c70ca8432e57f9a97fAlan Cox not_termios.c_cflag = ~tty->termios->c_cflag; 114995da310e66ee8090119596c70ca8432e57f9a97fAlan Cox not_termios.c_iflag = ~tty->termios->c_iflag; 115095da310e66ee8090119596c70ca8432e57f9a97fAlan Cox digi_set_termios(tty, port, ¬_termios); 115195da310e66ee8090119596c70ca8432e57f9a97fAlan Cox } 1152c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1156335f8514f200e63d689113d29cb7253a5c282967Alan Coxstatic void digi_close(struct usb_serial_port *port) 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEFINE_WAIT(wait); 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char buf[32]; 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11631f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern dbg("digi_close: TOP: port=%d", priv->dp_port_num); 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11650915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum mutex_lock(&port->serial->disc_mutex); 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if disconnected, just clear flags */ 11670915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum if (port->serial->disconnected) 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port->serial->dev) { 1171335f8514f200e63d689113d29cb7253a5c282967Alan Cox /* FIXME: Transmit idle belongs in the wait_unti_sent path */ 1172335f8514f200e63d689113d29cb7253a5c282967Alan Cox digi_transmit_idle(port, DIGI_CLOSE_TIMEOUT); 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* disable input flow control */ 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = DIGI_CMD_SET_INPUT_FLOW_CONTROL; 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[1] = priv->dp_port_num; 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[2] = DIGI_DISABLE; 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[3] = 0; 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* disable output flow control */ 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[4] = DIGI_CMD_SET_OUTPUT_FLOW_CONTROL; 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[5] = priv->dp_port_num; 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[6] = DIGI_DISABLE; 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[7] = 0; 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* disable reading modem signals automatically */ 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[8] = DIGI_CMD_READ_INPUT_SIGNALS; 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[9] = priv->dp_port_num; 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[10] = DIGI_DISABLE; 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[11] = 0; 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* disable receive */ 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[12] = DIGI_CMD_RECEIVE_ENABLE; 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[13] = priv->dp_port_num; 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[14] = DIGI_DISABLE; 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[15] = 0; 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* flush fifos */ 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[16] = DIGI_CMD_IFLUSH_FIFO; 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[17] = priv->dp_port_num; 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[18] = DIGI_FLUSH_TX | DIGI_FLUSH_RX; 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[19] = 0; 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 120441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox ret = digi_write_oob_command(port, buf, 20, 0); 120541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (ret != 0) 1206c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_close: write oob failed, ret=%d", ret); 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for final commands on oob port to complete */ 120941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox prepare_to_wait(&priv->dp_flush_wait, &wait, 121041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox TASK_INTERRUPTIBLE); 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule_timeout(DIGI_CLOSE_TIMEOUT); 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finish_wait(&priv->dp_flush_wait, &wait); 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* shutdown any outstanding bulk writes */ 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_kill_urb(port->write_urb); 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsexit: 12180915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum spin_lock_irq(&priv->dp_port_lock); 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 0; 1220c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox wake_up_interruptible(&priv->dp_close_wait); 12210915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum spin_unlock_irq(&priv->dp_port_lock); 12220915f490d81c1a5098b399ec6c0be45bd421ee1dOliver Neukum mutex_unlock(&port->serial->disc_mutex); 1223c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_close: done"); 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 122841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Digi Startup Device 122941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * 123041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Starts reads on all ports. Must be called AFTER startup, with 123141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * urbs initialized. Returns 0 if successful, non-zero error otherwise. 123241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox */ 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1234c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_startup_device(struct usb_serial *serial) 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 123641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox int i, ret = 0; 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_serial *serial_priv = usb_get_serial_data(serial); 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port; 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* be sure this happens exactly once */ 1241c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&serial_priv->ds_serial_lock); 1242c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (serial_priv->ds_device_started) { 1243c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&serial_priv->ds_serial_lock); 1244c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_priv->ds_device_started = 1; 1247c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&serial_priv->ds_serial_lock); 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* start reading from each bulk in endpoint for the device */ 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set USB_DISABLE_SPD flag for write bulk urbs */ 1251c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox for (i = 0; i < serial->type->num_ports + 1; i++) { 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port = serial->port[i]; 125341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox ret = usb_submit_urb(port->read_urb, GFP_KERNEL); 125441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (ret != 0) { 1255194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, 1256194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman "%s: usb_submit_urb failed, ret=%d, port=%d\n", 1257194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman __func__, ret, i); 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1261c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return ret; 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1265c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_startup(struct usb_serial *serial) 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv; 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_serial *serial_priv; 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1272c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_startup: TOP"); 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate the private data structures for all ports */ 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* number of regular ports + 1 for the out-of-band port */ 127641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox for (i = 0; i < serial->type->num_ports + 1; i++) { 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate port private structure */ 1278c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv = kmalloc(sizeof(struct digi_port), GFP_KERNEL); 1279c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (priv == NULL) { 1280c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox while (--i >= 0) 1281c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox kfree(usb_get_serial_port_data(serial->port[i])); 1282c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 1; /* error */ 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialize port private structure */ 1286c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_init(&priv->dp_port_lock); 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_port_num = i; 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_out_buf_len = 0; 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_write_urb_in_use = 0; 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals = 0; 1291c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox init_waitqueue_head(&priv->dp_modem_change_wait); 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_transmit_idle = 0; 1293c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox init_waitqueue_head(&priv->dp_transmit_idle_wait); 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_throttled = 0; 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_throttle_restart = 0; 1296c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox init_waitqueue_head(&priv->dp_flush_wait); 1297c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox init_waitqueue_head(&priv->dp_close_wait); 1298c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells INIT_WORK(&priv->dp_wakeup_work, digi_wakeup_write_lock); 1299c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells priv->dp_port = serial->port[i]; 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialize write wait queue for this port */ 1301c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox init_waitqueue_head(&serial->port[i]->write_wait); 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_set_serial_port_data(serial->port[i], priv); 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate serial private structure */ 1307c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox serial_priv = kmalloc(sizeof(struct digi_serial), GFP_KERNEL); 1308c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (serial_priv == NULL) { 1309c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox for (i = 0; i < serial->type->num_ports + 1; i++) 1310c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox kfree(usb_get_serial_port_data(serial->port[i])); 1311c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 1; /* error */ 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialize serial private structure */ 1315c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock_init(&serial_priv->ds_serial_lock); 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_priv->ds_oob_port_num = serial->type->num_ports; 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_priv->ds_oob_port = serial->port[serial_priv->ds_oob_port_num]; 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds serial_priv->ds_device_started = 0; 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_set_serial_data(serial, serial_priv); 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1321c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1325f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Sternstatic void digi_disconnect(struct usb_serial *serial) 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 1328f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern dbg("digi_disconnect: TOP, in_interrupt()=%ld", in_interrupt()); 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* stop reads and writes on all ports */ 1331c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox for (i = 0; i < serial->type->num_ports + 1; i++) { 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_kill_urb(serial->port[i]->read_urb); 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_kill_urb(serial->port[i]->write_urb); 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1335f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern} 1336f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern 1337f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern 1338f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Sternstatic void digi_release(struct usb_serial *serial) 1339f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern{ 1340f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern int i; 1341f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern dbg("digi_release: TOP, in_interrupt()=%ld", in_interrupt()); 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* free the private data structures for all ports */ 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* number of regular ports + 1 for the out-of-band port */ 134541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox for (i = 0; i < serial->type->num_ports + 1; i++) 1346c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox kfree(usb_get_serial_port_data(serial->port[i])); 1347c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox kfree(usb_get_serial_data(serial)); 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1351c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic void digi_read_bulk_callback(struct urb *urb) 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1353cdc97792289179974af6dda781c855696358d307Ming Lei struct usb_serial_port *port = urb->context; 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv; 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_serial *serial_priv; 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 135785d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman int status = urb->status; 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1359c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_read_bulk_callback: TOP"); 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* port sanity check, do not resubmit if port is not valid */ 1362194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman if (port == NULL) 1363194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman return; 1364194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman priv = usb_get_serial_port_data(port); 1365194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman if (priv == NULL) { 1366194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, "%s: port->private is NULL, status=%d\n", 1367194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman __func__, status); 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1370c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port->serial == NULL || 137141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox (serial_priv = usb_get_serial_data(port->serial)) == NULL) { 1372194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, "%s: serial is bad or serial->private " 1373194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman "is NULL, status=%d\n", __func__, status); 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* do not resubmit urb if it has any status error */ 137885d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman if (status) { 1379194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, 1380194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman "%s: nonzero read bulk status: status=%d, port=%d\n", 1381194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman __func__, status, priv->dp_port_num); 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle oob or inb callback, do not resubmit if error */ 1386c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (priv->dp_port_num == serial_priv->ds_oob_port_num) { 1387c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (digi_read_oob_callback(urb) != 0) 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1390c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (digi_read_inb_callback(urb) != 0) 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* continue read */ 139541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox ret = usb_submit_urb(urb, GFP_ATOMIC); 13961f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern if (ret != 0 && ret != -EPERM) { 1397194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, 1398194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman "%s: failed resubmitting urb, ret=%d, port=%d\n", 1399194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman __func__, ret, priv->dp_port_num); 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 140441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox/* 140541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Digi Read INB Callback 140641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * 140741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Digi Read INB Callback handles reads on the in band ports, sending 140841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * the data on to the tty subsystem. When called we know port and 140941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * port->private are not NULL and port->serial has been validated. 141041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * It returns 0 if successful, 1 if successful but the port is 141141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * throttled, and -1 if the sanity checks failed. 141241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox */ 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1414c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_read_inb_callback(struct urb *urb) 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1417cdc97792289179974af6dda781c855696358d307Ming Lei struct usb_serial_port *port = urb->context; 14184a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox struct tty_struct *tty; 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int opcode = ((unsigned char *)urb->transfer_buffer)[0]; 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len = ((unsigned char *)urb->transfer_buffer)[1]; 142285d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman int port_status = ((unsigned char *)urb->transfer_buffer)[2]; 142341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox unsigned char *data = ((unsigned char *)urb->transfer_buffer) + 3; 142441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox int flag, throttled; 142585d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman int status = urb->status; 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* do not process callbacks on closed ports */ 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* but do continue the read chain */ 14291f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern if (urb->status == -ENOENT) 1430c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* short/multiple packet check */ 1433c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (urb->actual_length != len + 2) { 1434194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, "%s: INCOMPLETE OR MULTIPLE PACKET, " 143550de36f7af3b1d791c402478210790c582126fe5Greg Kroah-Hartman "status=%d, port=%d, opcode=%d, len=%d, " 1436194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman "actual_length=%d, status=%d\n", __func__, status, 1437194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman priv->dp_port_num, opcode, len, urb->actual_length, 1438194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman port_status); 1439c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return -1; 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14424a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox tty = tty_port_tty_get(&port->port); 1443c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&priv->dp_port_lock); 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check for throttle; if set, do not resubmit read urb */ 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* indicate the read chain needs to be restarted on unthrottle */ 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds throttled = priv->dp_throttled; 1448c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (throttled) 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_throttle_restart = 1; 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* receive data */ 14524287341d4dba27ef8048f589e3c0bc683c9f2017Alan Cox if (tty && opcode == DIGI_CMD_RECEIVE_DATA) { 145385d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman /* get flag from port_status */ 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag = 0; 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* overrun is special, not associated with a char */ 1457c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port_status & DIGI_OVERRUN_ERROR) 1458c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox tty_insert_flip_char(tty, 0, TTY_OVERRUN); 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* break takes precedence over parity, */ 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* which takes precedence over framing errors */ 1462c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (port_status & DIGI_BREAK_ERROR) 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag = TTY_BREAK; 1464c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox else if (port_status & DIGI_PARITY_ERROR) 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag = TTY_PARITY; 1466c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox else if (port_status & DIGI_FRAMING_ERROR) 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flag = TTY_FRAME; 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 146985d75107117eca0e29ac3da8cb82b45f9cd3a7faGreg Kroah-Hartman /* data length is len-1 (one byte of len is port_status) */ 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds --len; 1471c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (len > 0) { 147270ced221cc9f041481f129e63cc5b1dedb0ff959Johan Hovold tty_insert_flip_string_fixed_flag(tty, data, flag, 147370ced221cc9f041481f129e63cc5b1dedb0ff959Johan Hovold len); 1474c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox tty_flip_buffer_push(tty); 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1477c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&priv->dp_port_lock); 14784a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox tty_kref_put(tty); 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1480c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (opcode == DIGI_CMD_RECEIVE_DISABLE) 1481441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s: got RECEIVE_DISABLE", __func__); 1482c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox else if (opcode != DIGI_CMD_RECEIVE_DATA) 1483441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s: unknown opcode: %d", __func__, opcode); 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 148541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox return throttled ? 1 : 0; 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 149041ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox/* 149141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Digi Read OOB Callback 149241ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * 149341ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * Digi Read OOB Callback handles reads on the out of band port. 149441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * When called we know port and port->private are not NULL and 149541ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * the port->serial is valid. It returns 0 if successful, and 149641ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox * -1 if the sanity checks failed. 149741ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox */ 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1499c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Coxstatic int digi_read_oob_callback(struct urb *urb) 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1502cdc97792289179974af6dda781c855696358d307Ming Lei struct usb_serial_port *port = urb->context; 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial = port->serial; 15044a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox struct tty_struct *tty; 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct digi_port *priv = usb_get_serial_port_data(port); 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int opcode, line, status, val; 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 150841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox unsigned int rts; 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1510c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_read_oob_callback: port=%d, len=%d", 1511c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox priv->dp_port_num, urb->actual_length); 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle each oob command */ 151441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox for (i = 0; i < urb->actual_length - 3;) { 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds opcode = ((unsigned char *)urb->transfer_buffer)[i++]; 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds line = ((unsigned char *)urb->transfer_buffer)[i++]; 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = ((unsigned char *)urb->transfer_buffer)[i++]; 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds val = ((unsigned char *)urb->transfer_buffer)[i++]; 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1520c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox dbg("digi_read_oob_callback: opcode=%d, line=%d, status=%d, val=%d", 1521c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox opcode, line, status, val); 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1523c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (status != 0 || line >= serial->type->num_ports) 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port = serial->port[line]; 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 152841ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox priv = usb_get_serial_port_data(port); 152941ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (priv == NULL) 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15324a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox tty = tty_port_tty_get(&port->port); 15334287341d4dba27ef8048f589e3c0bc683c9f2017Alan Cox 153441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox rts = 0; 15354287341d4dba27ef8048f589e3c0bc683c9f2017Alan Cox if (tty) 15364287341d4dba27ef8048f589e3c0bc683c9f2017Alan Cox rts = tty->termios->c_cflag & CRTSCTS; 15374a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox 15384287341d4dba27ef8048f589e3c0bc683c9f2017Alan Cox if (tty && opcode == DIGI_CMD_READ_INPUT_SIGNALS) { 1539c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&priv->dp_port_lock); 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* convert from digi flags to termiox flags */ 1541c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (val & DIGI_READ_INPUT_SIGNALS_CTS) { 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals |= TIOCM_CTS; 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* port must be open to use tty struct */ 154441ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (rts) { 15454a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox tty->hw_stopped = 0; 1546c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox digi_wakeup_write(port); 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals &= ~TIOCM_CTS; 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* port must be open to use tty struct */ 155141ad427da1f9303e2e34811398b31c999c3d39d1Alan Cox if (rts) 15524a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox tty->hw_stopped = 1; 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1554c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (val & DIGI_READ_INPUT_SIGNALS_DSR) 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals |= TIOCM_DSR; 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals &= ~TIOCM_DSR; 1558c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (val & DIGI_READ_INPUT_SIGNALS_RI) 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals |= TIOCM_RI; 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals &= ~TIOCM_RI; 1562c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox if (val & DIGI_READ_INPUT_SIGNALS_DCD) 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals |= TIOCM_CD; 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_modem_signals &= ~TIOCM_CD; 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1567c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox wake_up_interruptible(&priv->dp_modem_change_wait); 1568c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&priv->dp_port_lock); 1569c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox } else if (opcode == DIGI_CMD_TRANSMIT_IDLE) { 1570c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_lock(&priv->dp_port_lock); 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->dp_transmit_idle = 1; 1572c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox wake_up_interruptible(&priv->dp_transmit_idle_wait); 1573c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox spin_unlock(&priv->dp_port_lock); 1574c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox } else if (opcode == DIGI_CMD_IFLUSH_FIFO) { 1575c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox wake_up_interruptible(&priv->dp_flush_wait); 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15774a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox tty_kref_put(tty); 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1579c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan Cox return 0; 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 158389ddc53c4ab1e297058b2995541541c22b9de160Greg Kroah-Hartmanmodule_usb_serial_driver(digi_driver, serial_drivers); 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1585c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan CoxMODULE_AUTHOR(DRIVER_AUTHOR); 1586c6d61269f530e3f7da6bad32e8b42ab7993a5927Alan CoxMODULE_DESCRIPTION(DRIVER_DESC); 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(debug, bool, S_IRUGO | S_IWUSR); 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_PARM_DESC(debug, "Debug enabled or not"); 1591