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marcus.erl |
/*
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* mxser.c -- MOXA Smartio/Industio family multiport serial driver.
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*
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* Copyright (C) 1999-2006 Moxa Technologies (support@moxa.com.tw).
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* Copyright (C) 2006-2007 Jiri Slaby <jirislaby@gmail.com>
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*
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* This code is loosely based on the 1.8 moxa driver which is based on
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* Linux serial driver, written by Linus Torvalds, Theodore T'so and
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* others.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox
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* <alan@redhat.com>. The original 1.8 code is available on www.moxa.com.
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* - Fixed x86_64 cleanness
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* - Fixed sleep with spinlock held in mxser_send_break
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*/
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#include <linux/module.h>
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#include <linux/autoconf.h>
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#include <linux/errno.h>
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#include <linux/signal.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.h>
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#include <linux/serial.h>
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#include <linux/serial_reg.h>
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#include <linux/major.h>
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#include <linux/string.h>
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#include <linux/fcntl.h>
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#include <linux/ptrace.h>
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#include <linux/gfp.h>
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#include <linux/ioport.h>
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#include <linux/mm.h>
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#include <linux/delay.h>
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#include <linux/pci.h>
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#include <linux/bitops.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/uaccess.h>
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#include "mxser_new.h"
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#define MXSER_VERSION "2.0.2" /* 1.10 */
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#define MXSERMAJOR 174
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#define MXSERCUMAJOR 175
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#define MXSER_BOARDS 4 /* Max. boards */
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#define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */
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#define MXSER_PORTS (MXSER_BOARDS * MXSER_PORTS_PER_BOARD)
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#define MXSER_ISR_PASS_LIMIT 100
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#define MXSER_ERR_IOADDR -1
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#define MXSER_ERR_IRQ -2
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#define MXSER_ERR_IRQ_CONFLIT -3
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#define MXSER_ERR_VECTOR -4
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/*CheckIsMoxaMust return value*/
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#define MOXA_OTHER_UART 0x00
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#define MOXA_MUST_MU150_HWID 0x01
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#define MOXA_MUST_MU860_HWID 0x02
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#define WAKEUP_CHARS 256
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#define UART_MCR_AFE 0x20
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#define UART_LSR_SPECIAL 0x1E
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#define PCI_DEVICE_ID_CB108 0x1080
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#define PCI_DEVICE_ID_CB114 0x1142
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#define PCI_DEVICE_ID_CB134I 0x1341
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#define PCI_DEVICE_ID_CP138U 0x1380
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#define PCI_DEVICE_ID_POS104UL 0x1044
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#define C168_ASIC_ID 1
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#define C104_ASIC_ID 2
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#define C102_ASIC_ID 0xB
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#define CI132_ASIC_ID 4
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#define CI134_ASIC_ID 3
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#define CI104J_ASIC_ID 5
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#define MXSER_HIGHBAUD 1
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#define MXSER_HAS2 2
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/* This is only for PCI */
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static const struct {
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int type;
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int tx_fifo;
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int rx_fifo;
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int xmit_fifo_size;
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int rx_high_water;
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int rx_trigger;
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int rx_low_water;
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long max_baud;
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} Gpci_uart_info[] = {
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{MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L},
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{MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L},
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{MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L}
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};
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#define UART_INFO_NUM ARRAY_SIZE(Gpci_uart_info)
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struct mxser_cardinfo {
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unsigned int nports;
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char *name;
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unsigned int flags;
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};
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static const struct mxser_cardinfo mxser_cards[] = {
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/* 0*/ { 8, "C168 series", },
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{ 4, "C104 series", },
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{ 4, "CI-104J series", },
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{ 8, "C168H/PCI series", },
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{ 4, "C104H/PCI series", },
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/* 5*/ { 4, "C102 series", MXSER_HAS2 }, /* C102-ISA */
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{ 4, "CI-132 series", MXSER_HAS2 },
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{ 4, "CI-134 series", },
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{ 2, "CP-132 series", },
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{ 4, "CP-114 series", },
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/*10*/ { 4, "CT-114 series", },
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{ 2, "CP-102 series", MXSER_HIGHBAUD },
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{ 4, "CP-104U series", },
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{ 8, "CP-168U series", },
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{ 2, "CP-132U series", },
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/*15*/ { 4, "CP-134U series", },
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{ 4, "CP-104JU series", },
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{ 8, "Moxa UC7000 Serial", }, /* RC7000 */
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{ 8, "CP-118U series", },
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{ 2, "CP-102UL series", },
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/*20*/ { 2, "CP-102U series", },
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{ 8, "CP-118EL series", },
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{ 8, "CP-168EL series", },
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{ 4, "CP-104EL series", },
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{ 8, "CB-108 series", },
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/*25*/ { 4, "CB-114 series", },
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{ 4, "CB-134I series", },
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{ 8, "CP-138U series", },
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{ 4, "POS-104UL series", }
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};
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/* driver_data correspond to the lines in the structure above
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see also ISA probe function before you change something */
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static struct pci_device_id mxser_pcibrds[] = {
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C168), .driver_data = 3 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C104), .driver_data = 4 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132), .driver_data = 8 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114), .driver_data = 9 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CT114), .driver_data = 10 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102), .driver_data = 11 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104U), .driver_data = 12 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168U), .driver_data = 13 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132U), .driver_data = 14 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134U), .driver_data = 15 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104JU),.driver_data = 16 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_RC7000), .driver_data = 17 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118U), .driver_data = 18 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102UL),.driver_data = 19 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102U), .driver_data = 20 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118EL),.driver_data = 21 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168EL),.driver_data = 22 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104EL),.driver_data = 23 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB108), .driver_data = 24 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB114), .driver_data = 25 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB134I), .driver_data = 26 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP138U), .driver_data = 27 },
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{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_POS104UL), .driver_data = 28 },
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{ }
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};
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MODULE_DEVICE_TABLE(pci, mxser_pcibrds);
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static int mxvar_baud_table[] = {
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0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400,
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4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600
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};
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static unsigned int mxvar_baud_table1[] = {
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0, B50, B75, B110, B134, B150, B200, B300, B600, B1200, B1800, B2400,
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B4800, B9600, B19200, B38400, B57600, B115200, B230400, B460800, B921600
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};
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#define BAUD_TABLE_NO ARRAY_SIZE(mxvar_baud_table)
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#define B_SPEC B2000000
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static int ioaddr[MXSER_BOARDS] = { 0, 0, 0, 0 };
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static int ttymajor = MXSERMAJOR;
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static int calloutmajor = MXSERCUMAJOR;
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/* Variables for insmod */
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MODULE_AUTHOR("Casper Yang");
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MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver");
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module_param_array(ioaddr, int, NULL, 0);
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module_param(ttymajor, int, 0);
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MODULE_LICENSE("GPL");
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struct mxser_log {
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int tick;
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unsigned long rxcnt[MXSER_PORTS];
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unsigned long txcnt[MXSER_PORTS];
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};
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struct mxser_mon {
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unsigned long rxcnt;
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unsigned long txcnt;
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unsigned long up_rxcnt;
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unsigned long up_txcnt;
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int modem_status;
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unsigned char hold_reason;
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};
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struct mxser_mon_ext {
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unsigned long rx_cnt[32];
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unsigned long tx_cnt[32];
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unsigned long up_rxcnt[32];
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unsigned long up_txcnt[32];
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int modem_status[32];
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long baudrate[32];
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int databits[32];
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int stopbits[32];
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int parity[32];
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int flowctrl[32];
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int fifo[32];
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int iftype[32];
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};
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struct mxser_board;
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struct mxser_port {
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struct mxser_board *board;
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struct tty_struct *tty;
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| 239 |
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unsigned long ioaddr;
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unsigned long opmode_ioaddr;
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int max_baud;
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int rx_high_water;
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int rx_trigger; /* Rx fifo trigger level */
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int rx_low_water;
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int baud_base; /* max. speed */
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long realbaud;
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int type; /* UART type */
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int flags; /* defined in tty.h */
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int speed;
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int x_char; /* xon/xoff character */
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int IER; /* Interrupt Enable Register */
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int MCR; /* Modem control register */
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unsigned char stop_rx;
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unsigned char ldisc_stop_rx;
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int custom_divisor;
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int close_delay;
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unsigned short closing_wait;
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unsigned char err_shadow;
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unsigned long event;
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int count; /* # of fd on device */
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int blocked_open; /* # of blocked opens */
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struct async_icount icount; /* kernel counters for 4 input interrupts */
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int timeout;
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int read_status_mask;
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int ignore_status_mask;
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int xmit_fifo_size;
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unsigned char *xmit_buf;
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int xmit_head;
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int xmit_tail;
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int xmit_cnt;
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struct ktermios normal_termios;
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struct mxser_mon mon_data;
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| 282 |
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spinlock_t slock;
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wait_queue_head_t open_wait;
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wait_queue_head_t delta_msr_wait;
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| 285 |
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};
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| 286 |
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| 287 |
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struct mxser_board {
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unsigned int idx;
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int irq;
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| 290 |
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const struct mxser_cardinfo *info;
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unsigned long vector;
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unsigned long vector_mask;
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| 294 |
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int chip_flag;
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int uart_type;
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| 296 |
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| 297 |
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struct mxser_port ports[MXSER_PORTS_PER_BOARD];
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| 298 |
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};
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| 300 |
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struct mxser_mstatus {
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tcflag_t cflag;
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int cts;
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int dsr;
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int ri;
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int dcd;
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};
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| 308 |
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static struct mxser_mstatus GMStatus[MXSER_PORTS];
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| 310 |
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static int mxserBoardCAP[MXSER_BOARDS] = {
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0, 0, 0, 0
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/* 0x180, 0x280, 0x200, 0x320 */
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| 313 |
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};
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| 314 |
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| 315 |
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static struct mxser_board mxser_boards[MXSER_BOARDS];
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| 316 |
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static struct tty_driver *mxvar_sdriver;
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| 317 |
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static struct mxser_log mxvar_log;
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| 318 |
|
|
static int mxvar_diagflag;
|
| 319 |
|
|
static unsigned char mxser_msr[MXSER_PORTS + 1];
|
| 320 |
|
|
static struct mxser_mon_ext mon_data_ext;
|
| 321 |
|
|
static int mxser_set_baud_method[MXSER_PORTS + 1];
|
| 322 |
|
|
|
| 323 |
|
|
#ifdef CONFIG_PCI
|
| 324 |
|
|
static int __devinit CheckIsMoxaMust(int io)
|
| 325 |
|
|
{
|
| 326 |
|
|
u8 oldmcr, hwid;
|
| 327 |
|
|
int i;
|
| 328 |
|
|
|
| 329 |
|
|
outb(0, io + UART_LCR);
|
| 330 |
|
|
DISABLE_MOXA_MUST_ENCHANCE_MODE(io);
|
| 331 |
|
|
oldmcr = inb(io + UART_MCR);
|
| 332 |
|
|
outb(0, io + UART_MCR);
|
| 333 |
|
|
SET_MOXA_MUST_XON1_VALUE(io, 0x11);
|
| 334 |
|
|
if ((hwid = inb(io + UART_MCR)) != 0) {
|
| 335 |
|
|
outb(oldmcr, io + UART_MCR);
|
| 336 |
|
|
return MOXA_OTHER_UART;
|
| 337 |
|
|
}
|
| 338 |
|
|
|
| 339 |
|
|
GET_MOXA_MUST_HARDWARE_ID(io, &hwid);
|
| 340 |
|
|
for (i = 1; i < UART_INFO_NUM; i++) { /* 0 = OTHER_UART */
|
| 341 |
|
|
if (hwid == Gpci_uart_info[i].type)
|
| 342 |
|
|
return (int)hwid;
|
| 343 |
|
|
}
|
| 344 |
|
|
return MOXA_OTHER_UART;
|
| 345 |
|
|
}
|
| 346 |
|
|
#endif
|
| 347 |
|
|
|
| 348 |
|
|
static void process_txrx_fifo(struct mxser_port *info)
|
| 349 |
|
|
{
|
| 350 |
|
|
int i;
|
| 351 |
|
|
|
| 352 |
|
|
if ((info->type == PORT_16450) || (info->type == PORT_8250)) {
|
| 353 |
|
|
info->rx_trigger = 1;
|
| 354 |
|
|
info->rx_high_water = 1;
|
| 355 |
|
|
info->rx_low_water = 1;
|
| 356 |
|
|
info->xmit_fifo_size = 1;
|
| 357 |
|
|
} else
|
| 358 |
|
|
for (i = 0; i < UART_INFO_NUM; i++)
|
| 359 |
|
|
if (info->board->chip_flag == Gpci_uart_info[i].type) {
|
| 360 |
|
|
info->rx_trigger = Gpci_uart_info[i].rx_trigger;
|
| 361 |
|
|
info->rx_low_water = Gpci_uart_info[i].rx_low_water;
|
| 362 |
|
|
info->rx_high_water = Gpci_uart_info[i].rx_high_water;
|
| 363 |
|
|
info->xmit_fifo_size = Gpci_uart_info[i].xmit_fifo_size;
|
| 364 |
|
|
break;
|
| 365 |
|
|
}
|
| 366 |
|
|
}
|
| 367 |
|
|
|
| 368 |
|
|
static unsigned char mxser_get_msr(int baseaddr, int mode, int port)
|
| 369 |
|
|
{
|
| 370 |
|
|
unsigned char status = 0;
|
| 371 |
|
|
|
| 372 |
|
|
status = inb(baseaddr + UART_MSR);
|
| 373 |
|
|
|
| 374 |
|
|
mxser_msr[port] &= 0x0F;
|
| 375 |
|
|
mxser_msr[port] |= status;
|
| 376 |
|
|
status = mxser_msr[port];
|
| 377 |
|
|
if (mode)
|
| 378 |
|
|
mxser_msr[port] = 0;
|
| 379 |
|
|
|
| 380 |
|
|
return status;
|
| 381 |
|
|
}
|
| 382 |
|
|
|
| 383 |
|
|
static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp,
|
| 384 |
|
|
struct mxser_port *port)
|
| 385 |
|
|
{
|
| 386 |
|
|
DECLARE_WAITQUEUE(wait, current);
|
| 387 |
|
|
int retval;
|
| 388 |
|
|
int do_clocal = 0;
|
| 389 |
|
|
unsigned long flags;
|
| 390 |
|
|
|
| 391 |
|
|
/*
|
| 392 |
|
|
* If non-blocking mode is set, or the port is not enabled,
|
| 393 |
|
|
* then make the check up front and then exit.
|
| 394 |
|
|
*/
|
| 395 |
|
|
if ((filp->f_flags & O_NONBLOCK) ||
|
| 396 |
|
|
test_bit(TTY_IO_ERROR, &tty->flags)) {
|
| 397 |
|
|
port->flags |= ASYNC_NORMAL_ACTIVE;
|
| 398 |
|
|
return 0;
|
| 399 |
|
|
}
|
| 400 |
|
|
|
| 401 |
|
|
if (tty->termios->c_cflag & CLOCAL)
|
| 402 |
|
|
do_clocal = 1;
|
| 403 |
|
|
|
| 404 |
|
|
/*
|
| 405 |
|
|
* Block waiting for the carrier detect and the line to become
|
| 406 |
|
|
* free (i.e., not in use by the callout). While we are in
|
| 407 |
|
|
* this loop, port->count is dropped by one, so that
|
| 408 |
|
|
* mxser_close() knows when to free things. We restore it upon
|
| 409 |
|
|
* exit, either normal or abnormal.
|
| 410 |
|
|
*/
|
| 411 |
|
|
retval = 0;
|
| 412 |
|
|
add_wait_queue(&port->open_wait, &wait);
|
| 413 |
|
|
|
| 414 |
|
|
spin_lock_irqsave(&port->slock, flags);
|
| 415 |
|
|
if (!tty_hung_up_p(filp))
|
| 416 |
|
|
port->count--;
|
| 417 |
|
|
spin_unlock_irqrestore(&port->slock, flags);
|
| 418 |
|
|
port->blocked_open++;
|
| 419 |
|
|
while (1) {
|
| 420 |
|
|
spin_lock_irqsave(&port->slock, flags);
|
| 421 |
|
|
outb(inb(port->ioaddr + UART_MCR) |
|
| 422 |
|
|
UART_MCR_DTR | UART_MCR_RTS, port->ioaddr + UART_MCR);
|
| 423 |
|
|
spin_unlock_irqrestore(&port->slock, flags);
|
| 424 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 425 |
|
|
if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
|
| 426 |
|
|
if (port->flags & ASYNC_HUP_NOTIFY)
|
| 427 |
|
|
retval = -EAGAIN;
|
| 428 |
|
|
else
|
| 429 |
|
|
retval = -ERESTARTSYS;
|
| 430 |
|
|
break;
|
| 431 |
|
|
}
|
| 432 |
|
|
if (!(port->flags & ASYNC_CLOSING) &&
|
| 433 |
|
|
(do_clocal ||
|
| 434 |
|
|
(inb(port->ioaddr + UART_MSR) & UART_MSR_DCD)))
|
| 435 |
|
|
break;
|
| 436 |
|
|
if (signal_pending(current)) {
|
| 437 |
|
|
retval = -ERESTARTSYS;
|
| 438 |
|
|
break;
|
| 439 |
|
|
}
|
| 440 |
|
|
schedule();
|
| 441 |
|
|
}
|
| 442 |
|
|
set_current_state(TASK_RUNNING);
|
| 443 |
|
|
remove_wait_queue(&port->open_wait, &wait);
|
| 444 |
|
|
if (!tty_hung_up_p(filp))
|
| 445 |
|
|
port->count++;
|
| 446 |
|
|
port->blocked_open--;
|
| 447 |
|
|
if (retval)
|
| 448 |
|
|
return retval;
|
| 449 |
|
|
port->flags |= ASYNC_NORMAL_ACTIVE;
|
| 450 |
|
|
return 0;
|
| 451 |
|
|
}
|
| 452 |
|
|
|
| 453 |
|
|
static int mxser_set_baud(struct mxser_port *info, long newspd)
|
| 454 |
|
|
{
|
| 455 |
|
|
unsigned int i;
|
| 456 |
|
|
int quot = 0;
|
| 457 |
|
|
unsigned char cval;
|
| 458 |
|
|
int ret = 0;
|
| 459 |
|
|
|
| 460 |
|
|
if (!info->tty || !info->tty->termios)
|
| 461 |
|
|
return ret;
|
| 462 |
|
|
|
| 463 |
|
|
if (!(info->ioaddr))
|
| 464 |
|
|
return ret;
|
| 465 |
|
|
|
| 466 |
|
|
if (newspd > info->max_baud)
|
| 467 |
|
|
return 0;
|
| 468 |
|
|
|
| 469 |
|
|
info->realbaud = newspd;
|
| 470 |
|
|
for (i = 0; i < BAUD_TABLE_NO; i++)
|
| 471 |
|
|
if (newspd == mxvar_baud_table[i])
|
| 472 |
|
|
break;
|
| 473 |
|
|
if (i == BAUD_TABLE_NO) {
|
| 474 |
|
|
quot = info->baud_base / info->speed;
|
| 475 |
|
|
if (info->speed <= 0 || info->speed > info->max_baud)
|
| 476 |
|
|
quot = 0;
|
| 477 |
|
|
} else {
|
| 478 |
|
|
if (newspd == 134) {
|
| 479 |
|
|
quot = (2 * info->baud_base / 269);
|
| 480 |
|
|
} else if (newspd) {
|
| 481 |
|
|
quot = info->baud_base / newspd;
|
| 482 |
|
|
if (quot == 0)
|
| 483 |
|
|
quot = 1;
|
| 484 |
|
|
} else {
|
| 485 |
|
|
quot = 0;
|
| 486 |
|
|
}
|
| 487 |
|
|
}
|
| 488 |
|
|
|
| 489 |
|
|
info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base);
|
| 490 |
|
|
info->timeout += HZ / 50; /* Add .02 seconds of slop */
|
| 491 |
|
|
|
| 492 |
|
|
if (quot) {
|
| 493 |
|
|
info->MCR |= UART_MCR_DTR;
|
| 494 |
|
|
outb(info->MCR, info->ioaddr + UART_MCR);
|
| 495 |
|
|
} else {
|
| 496 |
|
|
info->MCR &= ~UART_MCR_DTR;
|
| 497 |
|
|
outb(info->MCR, info->ioaddr + UART_MCR);
|
| 498 |
|
|
return ret;
|
| 499 |
|
|
}
|
| 500 |
|
|
|
| 501 |
|
|
cval = inb(info->ioaddr + UART_LCR);
|
| 502 |
|
|
|
| 503 |
|
|
outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR); /* set DLAB */
|
| 504 |
|
|
|
| 505 |
|
|
outb(quot & 0xff, info->ioaddr + UART_DLL); /* LS of divisor */
|
| 506 |
|
|
outb(quot >> 8, info->ioaddr + UART_DLM); /* MS of divisor */
|
| 507 |
|
|
outb(cval, info->ioaddr + UART_LCR); /* reset DLAB */
|
| 508 |
|
|
|
| 509 |
|
|
if (i == BAUD_TABLE_NO) {
|
| 510 |
|
|
quot = info->baud_base % info->speed;
|
| 511 |
|
|
quot *= 8;
|
| 512 |
|
|
if ((quot % info->speed) > (info->speed / 2)) {
|
| 513 |
|
|
quot /= info->speed;
|
| 514 |
|
|
quot++;
|
| 515 |
|
|
} else {
|
| 516 |
|
|
quot /= info->speed;
|
| 517 |
|
|
}
|
| 518 |
|
|
SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, quot);
|
| 519 |
|
|
} else
|
| 520 |
|
|
SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, 0);
|
| 521 |
|
|
|
| 522 |
|
|
return ret;
|
| 523 |
|
|
}
|
| 524 |
|
|
|
| 525 |
|
|
/*
|
| 526 |
|
|
* This routine is called to set the UART divisor registers to match
|
| 527 |
|
|
* the specified baud rate for a serial port.
|
| 528 |
|
|
*/
|
| 529 |
|
|
static int mxser_change_speed(struct mxser_port *info,
|
| 530 |
|
|
struct ktermios *old_termios)
|
| 531 |
|
|
{
|
| 532 |
|
|
unsigned cflag, cval, fcr;
|
| 533 |
|
|
int ret = 0;
|
| 534 |
|
|
unsigned char status;
|
| 535 |
|
|
long baud;
|
| 536 |
|
|
|
| 537 |
|
|
if (!info->tty || !info->tty->termios)
|
| 538 |
|
|
return ret;
|
| 539 |
|
|
cflag = info->tty->termios->c_cflag;
|
| 540 |
|
|
if (!(info->ioaddr))
|
| 541 |
|
|
return ret;
|
| 542 |
|
|
|
| 543 |
|
|
if (mxser_set_baud_method[info->tty->index] == 0) {
|
| 544 |
|
|
if ((cflag & CBAUD) == B_SPEC)
|
| 545 |
|
|
baud = info->speed;
|
| 546 |
|
|
else
|
| 547 |
|
|
baud = tty_get_baud_rate(info->tty);
|
| 548 |
|
|
mxser_set_baud(info, baud);
|
| 549 |
|
|
}
|
| 550 |
|
|
|
| 551 |
|
|
/* byte size and parity */
|
| 552 |
|
|
switch (cflag & CSIZE) {
|
| 553 |
|
|
case CS5:
|
| 554 |
|
|
cval = 0x00;
|
| 555 |
|
|
break;
|
| 556 |
|
|
case CS6:
|
| 557 |
|
|
cval = 0x01;
|
| 558 |
|
|
break;
|
| 559 |
|
|
case CS7:
|
| 560 |
|
|
cval = 0x02;
|
| 561 |
|
|
break;
|
| 562 |
|
|
case CS8:
|
| 563 |
|
|
cval = 0x03;
|
| 564 |
|
|
break;
|
| 565 |
|
|
default:
|
| 566 |
|
|
cval = 0x00;
|
| 567 |
|
|
break; /* too keep GCC shut... */
|
| 568 |
|
|
}
|
| 569 |
|
|
if (cflag & CSTOPB)
|
| 570 |
|
|
cval |= 0x04;
|
| 571 |
|
|
if (cflag & PARENB)
|
| 572 |
|
|
cval |= UART_LCR_PARITY;
|
| 573 |
|
|
if (!(cflag & PARODD))
|
| 574 |
|
|
cval |= UART_LCR_EPAR;
|
| 575 |
|
|
if (cflag & CMSPAR)
|
| 576 |
|
|
cval |= UART_LCR_SPAR;
|
| 577 |
|
|
|
| 578 |
|
|
if ((info->type == PORT_8250) || (info->type == PORT_16450)) {
|
| 579 |
|
|
if (info->board->chip_flag) {
|
| 580 |
|
|
fcr = UART_FCR_ENABLE_FIFO;
|
| 581 |
|
|
fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
|
| 582 |
|
|
SET_MOXA_MUST_FIFO_VALUE(info);
|
| 583 |
|
|
} else
|
| 584 |
|
|
fcr = 0;
|
| 585 |
|
|
} else {
|
| 586 |
|
|
fcr = UART_FCR_ENABLE_FIFO;
|
| 587 |
|
|
if (info->board->chip_flag) {
|
| 588 |
|
|
fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
|
| 589 |
|
|
SET_MOXA_MUST_FIFO_VALUE(info);
|
| 590 |
|
|
} else {
|
| 591 |
|
|
switch (info->rx_trigger) {
|
| 592 |
|
|
case 1:
|
| 593 |
|
|
fcr |= UART_FCR_TRIGGER_1;
|
| 594 |
|
|
break;
|
| 595 |
|
|
case 4:
|
| 596 |
|
|
fcr |= UART_FCR_TRIGGER_4;
|
| 597 |
|
|
break;
|
| 598 |
|
|
case 8:
|
| 599 |
|
|
fcr |= UART_FCR_TRIGGER_8;
|
| 600 |
|
|
break;
|
| 601 |
|
|
default:
|
| 602 |
|
|
fcr |= UART_FCR_TRIGGER_14;
|
| 603 |
|
|
break;
|
| 604 |
|
|
}
|
| 605 |
|
|
}
|
| 606 |
|
|
}
|
| 607 |
|
|
|
| 608 |
|
|
/* CTS flow control flag and modem status interrupts */
|
| 609 |
|
|
info->IER &= ~UART_IER_MSI;
|
| 610 |
|
|
info->MCR &= ~UART_MCR_AFE;
|
| 611 |
|
|
if (cflag & CRTSCTS) {
|
| 612 |
|
|
info->flags |= ASYNC_CTS_FLOW;
|
| 613 |
|
|
info->IER |= UART_IER_MSI;
|
| 614 |
|
|
if ((info->type == PORT_16550A) || (info->board->chip_flag)) {
|
| 615 |
|
|
info->MCR |= UART_MCR_AFE;
|
| 616 |
|
|
} else {
|
| 617 |
|
|
status = inb(info->ioaddr + UART_MSR);
|
| 618 |
|
|
if (info->tty->hw_stopped) {
|
| 619 |
|
|
if (status & UART_MSR_CTS) {
|
| 620 |
|
|
info->tty->hw_stopped = 0;
|
| 621 |
|
|
if (info->type != PORT_16550A &&
|
| 622 |
|
|
!info->board->chip_flag) {
|
| 623 |
|
|
outb(info->IER & ~UART_IER_THRI,
|
| 624 |
|
|
info->ioaddr +
|
| 625 |
|
|
UART_IER);
|
| 626 |
|
|
info->IER |= UART_IER_THRI;
|
| 627 |
|
|
outb(info->IER, info->ioaddr +
|
| 628 |
|
|
UART_IER);
|
| 629 |
|
|
}
|
| 630 |
|
|
tty_wakeup(info->tty);
|
| 631 |
|
|
}
|
| 632 |
|
|
} else {
|
| 633 |
|
|
if (!(status & UART_MSR_CTS)) {
|
| 634 |
|
|
info->tty->hw_stopped = 1;
|
| 635 |
|
|
if ((info->type != PORT_16550A) &&
|
| 636 |
|
|
(!info->board->chip_flag)) {
|
| 637 |
|
|
info->IER &= ~UART_IER_THRI;
|
| 638 |
|
|
outb(info->IER, info->ioaddr +
|
| 639 |
|
|
UART_IER);
|
| 640 |
|
|
}
|
| 641 |
|
|
}
|
| 642 |
|
|
}
|
| 643 |
|
|
}
|
| 644 |
|
|
} else {
|
| 645 |
|
|
info->flags &= ~ASYNC_CTS_FLOW;
|
| 646 |
|
|
}
|
| 647 |
|
|
outb(info->MCR, info->ioaddr + UART_MCR);
|
| 648 |
|
|
if (cflag & CLOCAL) {
|
| 649 |
|
|
info->flags &= ~ASYNC_CHECK_CD;
|
| 650 |
|
|
} else {
|
| 651 |
|
|
info->flags |= ASYNC_CHECK_CD;
|
| 652 |
|
|
info->IER |= UART_IER_MSI;
|
| 653 |
|
|
}
|
| 654 |
|
|
outb(info->IER, info->ioaddr + UART_IER);
|
| 655 |
|
|
|
| 656 |
|
|
/*
|
| 657 |
|
|
* Set up parity check flag
|
| 658 |
|
|
*/
|
| 659 |
|
|
info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
|
| 660 |
|
|
if (I_INPCK(info->tty))
|
| 661 |
|
|
info->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
|
| 662 |
|
|
if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
|
| 663 |
|
|
info->read_status_mask |= UART_LSR_BI;
|
| 664 |
|
|
|
| 665 |
|
|
info->ignore_status_mask = 0;
|
| 666 |
|
|
|
| 667 |
|
|
if (I_IGNBRK(info->tty)) {
|
| 668 |
|
|
info->ignore_status_mask |= UART_LSR_BI;
|
| 669 |
|
|
info->read_status_mask |= UART_LSR_BI;
|
| 670 |
|
|
/*
|
| 671 |
|
|
* If we're ignore parity and break indicators, ignore
|
| 672 |
|
|
* overruns too. (For real raw support).
|
| 673 |
|
|
*/
|
| 674 |
|
|
if (I_IGNPAR(info->tty)) {
|
| 675 |
|
|
info->ignore_status_mask |=
|
| 676 |
|
|
UART_LSR_OE |
|
| 677 |
|
|
UART_LSR_PE |
|
| 678 |
|
|
UART_LSR_FE;
|
| 679 |
|
|
info->read_status_mask |=
|
| 680 |
|
|
UART_LSR_OE |
|
| 681 |
|
|
UART_LSR_PE |
|
| 682 |
|
|
UART_LSR_FE;
|
| 683 |
|
|
}
|
| 684 |
|
|
}
|
| 685 |
|
|
if (info->board->chip_flag) {
|
| 686 |
|
|
SET_MOXA_MUST_XON1_VALUE(info->ioaddr, START_CHAR(info->tty));
|
| 687 |
|
|
SET_MOXA_MUST_XOFF1_VALUE(info->ioaddr, STOP_CHAR(info->tty));
|
| 688 |
|
|
if (I_IXON(info->tty)) {
|
| 689 |
|
|
ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
| 690 |
|
|
} else {
|
| 691 |
|
|
DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
| 692 |
|
|
}
|
| 693 |
|
|
if (I_IXOFF(info->tty)) {
|
| 694 |
|
|
ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
| 695 |
|
|
} else {
|
| 696 |
|
|
DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
| 697 |
|
|
}
|
| 698 |
|
|
}
|
| 699 |
|
|
|
| 700 |
|
|
|
| 701 |
|
|
outb(fcr, info->ioaddr + UART_FCR); /* set fcr */
|
| 702 |
|
|
outb(cval, info->ioaddr + UART_LCR);
|
| 703 |
|
|
|
| 704 |
|
|
return ret;
|
| 705 |
|
|
}
|
| 706 |
|
|
|
| 707 |
|
|
static void mxser_check_modem_status(struct mxser_port *port, int status)
|
| 708 |
|
|
{
|
| 709 |
|
|
/* update input line counters */
|
| 710 |
|
|
if (status & UART_MSR_TERI)
|
| 711 |
|
|
port->icount.rng++;
|
| 712 |
|
|
if (status & UART_MSR_DDSR)
|
| 713 |
|
|
port->icount.dsr++;
|
| 714 |
|
|
if (status & UART_MSR_DDCD)
|
| 715 |
|
|
port->icount.dcd++;
|
| 716 |
|
|
if (status & UART_MSR_DCTS)
|
| 717 |
|
|
port->icount.cts++;
|
| 718 |
|
|
port->mon_data.modem_status = status;
|
| 719 |
|
|
wake_up_interruptible(&port->delta_msr_wait);
|
| 720 |
|
|
|
| 721 |
|
|
if ((port->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
|
| 722 |
|
|
if (status & UART_MSR_DCD)
|
| 723 |
|
|
wake_up_interruptible(&port->open_wait);
|
| 724 |
|
|
}
|
| 725 |
|
|
|
| 726 |
|
|
if (port->flags & ASYNC_CTS_FLOW) {
|
| 727 |
|
|
if (port->tty->hw_stopped) {
|
| 728 |
|
|
if (status & UART_MSR_CTS) {
|
| 729 |
|
|
port->tty->hw_stopped = 0;
|
| 730 |
|
|
|
| 731 |
|
|
if ((port->type != PORT_16550A) &&
|
| 732 |
|
|
(!port->board->chip_flag)) {
|
| 733 |
|
|
outb(port->IER & ~UART_IER_THRI,
|
| 734 |
|
|
port->ioaddr + UART_IER);
|
| 735 |
|
|
port->IER |= UART_IER_THRI;
|
| 736 |
|
|
outb(port->IER, port->ioaddr +
|
| 737 |
|
|
UART_IER);
|
| 738 |
|
|
}
|
| 739 |
|
|
tty_wakeup(port->tty);
|
| 740 |
|
|
}
|
| 741 |
|
|
} else {
|
| 742 |
|
|
if (!(status & UART_MSR_CTS)) {
|
| 743 |
|
|
port->tty->hw_stopped = 1;
|
| 744 |
|
|
if (port->type != PORT_16550A &&
|
| 745 |
|
|
!port->board->chip_flag) {
|
| 746 |
|
|
port->IER &= ~UART_IER_THRI;
|
| 747 |
|
|
outb(port->IER, port->ioaddr +
|
| 748 |
|
|
UART_IER);
|
| 749 |
|
|
}
|
| 750 |
|
|
}
|
| 751 |
|
|
}
|
| 752 |
|
|
}
|
| 753 |
|
|
}
|
| 754 |
|
|
|
| 755 |
|
|
static int mxser_startup(struct mxser_port *info)
|
| 756 |
|
|
{
|
| 757 |
|
|
unsigned long page;
|
| 758 |
|
|
unsigned long flags;
|
| 759 |
|
|
|
| 760 |
|
|
page = __get_free_page(GFP_KERNEL);
|
| 761 |
|
|
if (!page)
|
| 762 |
|
|
return -ENOMEM;
|
| 763 |
|
|
|
| 764 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 765 |
|
|
|
| 766 |
|
|
if (info->flags & ASYNC_INITIALIZED) {
|
| 767 |
|
|
free_page(page);
|
| 768 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 769 |
|
|
return 0;
|
| 770 |
|
|
}
|
| 771 |
|
|
|
| 772 |
|
|
if (!info->ioaddr || !info->type) {
|
| 773 |
|
|
if (info->tty)
|
| 774 |
|
|
set_bit(TTY_IO_ERROR, &info->tty->flags);
|
| 775 |
|
|
free_page(page);
|
| 776 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 777 |
|
|
return 0;
|
| 778 |
|
|
}
|
| 779 |
|
|
if (info->xmit_buf)
|
| 780 |
|
|
free_page(page);
|
| 781 |
|
|
else
|
| 782 |
|
|
info->xmit_buf = (unsigned char *) page;
|
| 783 |
|
|
|
| 784 |
|
|
/*
|
| 785 |
|
|
* Clear the FIFO buffers and disable them
|
| 786 |
|
|
* (they will be reenabled in mxser_change_speed())
|
| 787 |
|
|
*/
|
| 788 |
|
|
if (info->board->chip_flag)
|
| 789 |
|
|
outb((UART_FCR_CLEAR_RCVR |
|
| 790 |
|
|
UART_FCR_CLEAR_XMIT |
|
| 791 |
|
|
MOXA_MUST_FCR_GDA_MODE_ENABLE), info->ioaddr + UART_FCR);
|
| 792 |
|
|
else
|
| 793 |
|
|
outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
|
| 794 |
|
|
info->ioaddr + UART_FCR);
|
| 795 |
|
|
|
| 796 |
|
|
/*
|
| 797 |
|
|
* At this point there's no way the LSR could still be 0xFF;
|
| 798 |
|
|
* if it is, then bail out, because there's likely no UART
|
| 799 |
|
|
* here.
|
| 800 |
|
|
*/
|
| 801 |
|
|
if (inb(info->ioaddr + UART_LSR) == 0xff) {
|
| 802 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 803 |
|
|
if (capable(CAP_SYS_ADMIN)) {
|
| 804 |
|
|
if (info->tty)
|
| 805 |
|
|
set_bit(TTY_IO_ERROR, &info->tty->flags);
|
| 806 |
|
|
return 0;
|
| 807 |
|
|
} else
|
| 808 |
|
|
return -ENODEV;
|
| 809 |
|
|
}
|
| 810 |
|
|
|
| 811 |
|
|
/*
|
| 812 |
|
|
* Clear the interrupt registers.
|
| 813 |
|
|
*/
|
| 814 |
|
|
(void) inb(info->ioaddr + UART_LSR);
|
| 815 |
|
|
(void) inb(info->ioaddr + UART_RX);
|
| 816 |
|
|
(void) inb(info->ioaddr + UART_IIR);
|
| 817 |
|
|
(void) inb(info->ioaddr + UART_MSR);
|
| 818 |
|
|
|
| 819 |
|
|
/*
|
| 820 |
|
|
* Now, initialize the UART
|
| 821 |
|
|
*/
|
| 822 |
|
|
outb(UART_LCR_WLEN8, info->ioaddr + UART_LCR); /* reset DLAB */
|
| 823 |
|
|
info->MCR = UART_MCR_DTR | UART_MCR_RTS;
|
| 824 |
|
|
outb(info->MCR, info->ioaddr + UART_MCR);
|
| 825 |
|
|
|
| 826 |
|
|
/*
|
| 827 |
|
|
* Finally, enable interrupts
|
| 828 |
|
|
*/
|
| 829 |
|
|
info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
|
| 830 |
|
|
|
| 831 |
|
|
if (info->board->chip_flag)
|
| 832 |
|
|
info->IER |= MOXA_MUST_IER_EGDAI;
|
| 833 |
|
|
outb(info->IER, info->ioaddr + UART_IER); /* enable interrupts */
|
| 834 |
|
|
|
| 835 |
|
|
/*
|
| 836 |
|
|
* And clear the interrupt registers again for luck.
|
| 837 |
|
|
*/
|
| 838 |
|
|
(void) inb(info->ioaddr + UART_LSR);
|
| 839 |
|
|
(void) inb(info->ioaddr + UART_RX);
|
| 840 |
|
|
(void) inb(info->ioaddr + UART_IIR);
|
| 841 |
|
|
(void) inb(info->ioaddr + UART_MSR);
|
| 842 |
|
|
|
| 843 |
|
|
if (info->tty)
|
| 844 |
|
|
clear_bit(TTY_IO_ERROR, &info->tty->flags);
|
| 845 |
|
|
info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
|
| 846 |
|
|
|
| 847 |
|
|
/*
|
| 848 |
|
|
* and set the speed of the serial port
|
| 849 |
|
|
*/
|
| 850 |
|
|
mxser_change_speed(info, NULL);
|
| 851 |
|
|
info->flags |= ASYNC_INITIALIZED;
|
| 852 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 853 |
|
|
|
| 854 |
|
|
return 0;
|
| 855 |
|
|
}
|
| 856 |
|
|
|
| 857 |
|
|
/*
|
| 858 |
|
|
* This routine will shutdown a serial port; interrupts maybe disabled, and
|
| 859 |
|
|
* DTR is dropped if the hangup on close termio flag is on.
|
| 860 |
|
|
*/
|
| 861 |
|
|
static void mxser_shutdown(struct mxser_port *info)
|
| 862 |
|
|
{
|
| 863 |
|
|
unsigned long flags;
|
| 864 |
|
|
|
| 865 |
|
|
if (!(info->flags & ASYNC_INITIALIZED))
|
| 866 |
|
|
return;
|
| 867 |
|
|
|
| 868 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 869 |
|
|
|
| 870 |
|
|
/*
|
| 871 |
|
|
* clear delta_msr_wait queue to avoid mem leaks: we may free the irq
|
| 872 |
|
|
* here so the queue might never be waken up
|
| 873 |
|
|
*/
|
| 874 |
|
|
wake_up_interruptible(&info->delta_msr_wait);
|
| 875 |
|
|
|
| 876 |
|
|
/*
|
| 877 |
|
|
* Free the IRQ, if necessary
|
| 878 |
|
|
*/
|
| 879 |
|
|
if (info->xmit_buf) {
|
| 880 |
|
|
free_page((unsigned long) info->xmit_buf);
|
| 881 |
|
|
info->xmit_buf = NULL;
|
| 882 |
|
|
}
|
| 883 |
|
|
|
| 884 |
|
|
info->IER = 0;
|
| 885 |
|
|
outb(0x00, info->ioaddr + UART_IER);
|
| 886 |
|
|
|
| 887 |
|
|
if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
|
| 888 |
|
|
info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS);
|
| 889 |
|
|
outb(info->MCR, info->ioaddr + UART_MCR);
|
| 890 |
|
|
|
| 891 |
|
|
/* clear Rx/Tx FIFO's */
|
| 892 |
|
|
if (info->board->chip_flag)
|
| 893 |
|
|
outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT |
|
| 894 |
|
|
MOXA_MUST_FCR_GDA_MODE_ENABLE,
|
| 895 |
|
|
info->ioaddr + UART_FCR);
|
| 896 |
|
|
else
|
| 897 |
|
|
outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
|
| 898 |
|
|
info->ioaddr + UART_FCR);
|
| 899 |
|
|
|
| 900 |
|
|
/* read data port to reset things */
|
| 901 |
|
|
(void) inb(info->ioaddr + UART_RX);
|
| 902 |
|
|
|
| 903 |
|
|
if (info->tty)
|
| 904 |
|
|
set_bit(TTY_IO_ERROR, &info->tty->flags);
|
| 905 |
|
|
|
| 906 |
|
|
info->flags &= ~ASYNC_INITIALIZED;
|
| 907 |
|
|
|
| 908 |
|
|
if (info->board->chip_flag)
|
| 909 |
|
|
SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
| 910 |
|
|
|
| 911 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 912 |
|
|
}
|
| 913 |
|
|
|
| 914 |
|
|
/*
|
| 915 |
|
|
* This routine is called whenever a serial port is opened. It
|
| 916 |
|
|
* enables interrupts for a serial port, linking in its async structure into
|
| 917 |
|
|
* the IRQ chain. It also performs the serial-specific
|
| 918 |
|
|
* initialization for the tty structure.
|
| 919 |
|
|
*/
|
| 920 |
|
|
static int mxser_open(struct tty_struct *tty, struct file *filp)
|
| 921 |
|
|
{
|
| 922 |
|
|
struct mxser_port *info;
|
| 923 |
|
|
unsigned long flags;
|
| 924 |
|
|
int retval, line;
|
| 925 |
|
|
|
| 926 |
|
|
line = tty->index;
|
| 927 |
|
|
if (line == MXSER_PORTS)
|
| 928 |
|
|
return 0;
|
| 929 |
|
|
if (line < 0 || line > MXSER_PORTS)
|
| 930 |
|
|
return -ENODEV;
|
| 931 |
|
|
info = &mxser_boards[line / MXSER_PORTS_PER_BOARD].ports[line % MXSER_PORTS_PER_BOARD];
|
| 932 |
|
|
if (!info->ioaddr)
|
| 933 |
|
|
return -ENODEV;
|
| 934 |
|
|
|
| 935 |
|
|
tty->driver_data = info;
|
| 936 |
|
|
info->tty = tty;
|
| 937 |
|
|
/*
|
| 938 |
|
|
* Start up serial port
|
| 939 |
|
|
*/
|
| 940 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 941 |
|
|
info->count++;
|
| 942 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 943 |
|
|
retval = mxser_startup(info);
|
| 944 |
|
|
if (retval)
|
| 945 |
|
|
return retval;
|
| 946 |
|
|
|
| 947 |
|
|
retval = mxser_block_til_ready(tty, filp, info);
|
| 948 |
|
|
if (retval)
|
| 949 |
|
|
return retval;
|
| 950 |
|
|
|
| 951 |
|
|
/* unmark here for very high baud rate (ex. 921600 bps) used */
|
| 952 |
|
|
tty->low_latency = 1;
|
| 953 |
|
|
return 0;
|
| 954 |
|
|
}
|
| 955 |
|
|
|
| 956 |
|
|
/*
|
| 957 |
|
|
* This routine is called when the serial port gets closed. First, we
|
| 958 |
|
|
* wait for the last remaining data to be sent. Then, we unlink its
|
| 959 |
|
|
* async structure from the interrupt chain if necessary, and we free
|
| 960 |
|
|
* that IRQ if nothing is left in the chain.
|
| 961 |
|
|
*/
|
| 962 |
|
|
static void mxser_close(struct tty_struct *tty, struct file *filp)
|
| 963 |
|
|
{
|
| 964 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 965 |
|
|
|
| 966 |
|
|
unsigned long timeout;
|
| 967 |
|
|
unsigned long flags;
|
| 968 |
|
|
|
| 969 |
|
|
if (tty->index == MXSER_PORTS)
|
| 970 |
|
|
return;
|
| 971 |
|
|
if (!info)
|
| 972 |
|
|
return;
|
| 973 |
|
|
|
| 974 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 975 |
|
|
|
| 976 |
|
|
if (tty_hung_up_p(filp)) {
|
| 977 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 978 |
|
|
return;
|
| 979 |
|
|
}
|
| 980 |
|
|
if ((tty->count == 1) && (info->count != 1)) {
|
| 981 |
|
|
/*
|
| 982 |
|
|
* Uh, oh. tty->count is 1, which means that the tty
|
| 983 |
|
|
* structure will be freed. Info->count should always
|
| 984 |
|
|
* be one in these conditions. If it's greater than
|
| 985 |
|
|
* one, we've got real problems, since it means the
|
| 986 |
|
|
* serial port won't be shutdown.
|
| 987 |
|
|
*/
|
| 988 |
|
|
printk(KERN_ERR "mxser_close: bad serial port count; "
|
| 989 |
|
|
"tty->count is 1, info->count is %d\n", info->count);
|
| 990 |
|
|
info->count = 1;
|
| 991 |
|
|
}
|
| 992 |
|
|
if (--info->count < 0) {
|
| 993 |
|
|
printk(KERN_ERR "mxser_close: bad serial port count for "
|
| 994 |
|
|
"ttys%d: %d\n", tty->index, info->count);
|
| 995 |
|
|
info->count = 0;
|
| 996 |
|
|
}
|
| 997 |
|
|
if (info->count) {
|
| 998 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 999 |
|
|
return;
|
| 1000 |
|
|
}
|
| 1001 |
|
|
info->flags |= ASYNC_CLOSING;
|
| 1002 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1003 |
|
|
/*
|
| 1004 |
|
|
* Save the termios structure, since this port may have
|
| 1005 |
|
|
* separate termios for callout and dialin.
|
| 1006 |
|
|
*/
|
| 1007 |
|
|
if (info->flags & ASYNC_NORMAL_ACTIVE)
|
| 1008 |
|
|
info->normal_termios = *tty->termios;
|
| 1009 |
|
|
/*
|
| 1010 |
|
|
* Now we wait for the transmit buffer to clear; and we notify
|
| 1011 |
|
|
* the line discipline to only process XON/XOFF characters.
|
| 1012 |
|
|
*/
|
| 1013 |
|
|
tty->closing = 1;
|
| 1014 |
|
|
if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE)
|
| 1015 |
|
|
tty_wait_until_sent(tty, info->closing_wait);
|
| 1016 |
|
|
/*
|
| 1017 |
|
|
* At this point we stop accepting input. To do this, we
|
| 1018 |
|
|
* disable the receive line status interrupts, and tell the
|
| 1019 |
|
|
* interrupt driver to stop checking the data ready bit in the
|
| 1020 |
|
|
* line status register.
|
| 1021 |
|
|
*/
|
| 1022 |
|
|
info->IER &= ~UART_IER_RLSI;
|
| 1023 |
|
|
if (info->board->chip_flag)
|
| 1024 |
|
|
info->IER &= ~MOXA_MUST_RECV_ISR;
|
| 1025 |
|
|
|
| 1026 |
|
|
if (info->flags & ASYNC_INITIALIZED) {
|
| 1027 |
|
|
outb(info->IER, info->ioaddr + UART_IER);
|
| 1028 |
|
|
/*
|
| 1029 |
|
|
* Before we drop DTR, make sure the UART transmitter
|
| 1030 |
|
|
* has completely drained; this is especially
|
| 1031 |
|
|
* important if there is a transmit FIFO!
|
| 1032 |
|
|
*/
|
| 1033 |
|
|
timeout = jiffies + HZ;
|
| 1034 |
|
|
while (!(inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT)) {
|
| 1035 |
|
|
schedule_timeout_interruptible(5);
|
| 1036 |
|
|
if (time_after(jiffies, timeout))
|
| 1037 |
|
|
break;
|
| 1038 |
|
|
}
|
| 1039 |
|
|
}
|
| 1040 |
|
|
mxser_shutdown(info);
|
| 1041 |
|
|
|
| 1042 |
|
|
if (tty->driver->flush_buffer)
|
| 1043 |
|
|
tty->driver->flush_buffer(tty);
|
| 1044 |
|
|
|
| 1045 |
|
|
tty_ldisc_flush(tty);
|
| 1046 |
|
|
|
| 1047 |
|
|
tty->closing = 0;
|
| 1048 |
|
|
info->event = 0;
|
| 1049 |
|
|
info->tty = NULL;
|
| 1050 |
|
|
if (info->blocked_open) {
|
| 1051 |
|
|
if (info->close_delay)
|
| 1052 |
|
|
schedule_timeout_interruptible(info->close_delay);
|
| 1053 |
|
|
wake_up_interruptible(&info->open_wait);
|
| 1054 |
|
|
}
|
| 1055 |
|
|
|
| 1056 |
|
|
info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
|
| 1057 |
|
|
}
|
| 1058 |
|
|
|
| 1059 |
|
|
static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count)
|
| 1060 |
|
|
{
|
| 1061 |
|
|
int c, total = 0;
|
| 1062 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1063 |
|
|
unsigned long flags;
|
| 1064 |
|
|
|
| 1065 |
|
|
if (!info->xmit_buf)
|
| 1066 |
|
|
return 0;
|
| 1067 |
|
|
|
| 1068 |
|
|
while (1) {
|
| 1069 |
|
|
c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
|
| 1070 |
|
|
SERIAL_XMIT_SIZE - info->xmit_head));
|
| 1071 |
|
|
if (c <= 0)
|
| 1072 |
|
|
break;
|
| 1073 |
|
|
|
| 1074 |
|
|
memcpy(info->xmit_buf + info->xmit_head, buf, c);
|
| 1075 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1076 |
|
|
info->xmit_head = (info->xmit_head + c) &
|
| 1077 |
|
|
(SERIAL_XMIT_SIZE - 1);
|
| 1078 |
|
|
info->xmit_cnt += c;
|
| 1079 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1080 |
|
|
|
| 1081 |
|
|
buf += c;
|
| 1082 |
|
|
count -= c;
|
| 1083 |
|
|
total += c;
|
| 1084 |
|
|
}
|
| 1085 |
|
|
|
| 1086 |
|
|
if (info->xmit_cnt && !tty->stopped) {
|
| 1087 |
|
|
if (!tty->hw_stopped ||
|
| 1088 |
|
|
(info->type == PORT_16550A) ||
|
| 1089 |
|
|
(info->board->chip_flag)) {
|
| 1090 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1091 |
|
|
outb(info->IER & ~UART_IER_THRI, info->ioaddr +
|
| 1092 |
|
|
UART_IER);
|
| 1093 |
|
|
info->IER |= UART_IER_THRI;
|
| 1094 |
|
|
outb(info->IER, info->ioaddr + UART_IER);
|
| 1095 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1096 |
|
|
}
|
| 1097 |
|
|
}
|
| 1098 |
|
|
return total;
|
| 1099 |
|
|
}
|
| 1100 |
|
|
|
| 1101 |
|
|
static void mxser_put_char(struct tty_struct *tty, unsigned char ch)
|
| 1102 |
|
|
{
|
| 1103 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1104 |
|
|
unsigned long flags;
|
| 1105 |
|
|
|
| 1106 |
|
|
if (!info->xmit_buf)
|
| 1107 |
|
|
return;
|
| 1108 |
|
|
|
| 1109 |
|
|
if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1)
|
| 1110 |
|
|
return;
|
| 1111 |
|
|
|
| 1112 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1113 |
|
|
info->xmit_buf[info->xmit_head++] = ch;
|
| 1114 |
|
|
info->xmit_head &= SERIAL_XMIT_SIZE - 1;
|
| 1115 |
|
|
info->xmit_cnt++;
|
| 1116 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1117 |
|
|
if (!tty->stopped) {
|
| 1118 |
|
|
if (!tty->hw_stopped ||
|
| 1119 |
|
|
(info->type == PORT_16550A) ||
|
| 1120 |
|
|
info->board->chip_flag) {
|
| 1121 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1122 |
|
|
outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER);
|
| 1123 |
|
|
info->IER |= UART_IER_THRI;
|
| 1124 |
|
|
outb(info->IER, info->ioaddr + UART_IER);
|
| 1125 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1126 |
|
|
}
|
| 1127 |
|
|
}
|
| 1128 |
|
|
}
|
| 1129 |
|
|
|
| 1130 |
|
|
|
| 1131 |
|
|
static void mxser_flush_chars(struct tty_struct *tty)
|
| 1132 |
|
|
{
|
| 1133 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1134 |
|
|
unsigned long flags;
|
| 1135 |
|
|
|
| 1136 |
|
|
if (info->xmit_cnt <= 0 ||
|
| 1137 |
|
|
tty->stopped ||
|
| 1138 |
|
|
!info->xmit_buf ||
|
| 1139 |
|
|
(tty->hw_stopped &&
|
| 1140 |
|
|
(info->type != PORT_16550A) &&
|
| 1141 |
|
|
(!info->board->chip_flag)
|
| 1142 |
|
|
))
|
| 1143 |
|
|
return;
|
| 1144 |
|
|
|
| 1145 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1146 |
|
|
|
| 1147 |
|
|
outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER);
|
| 1148 |
|
|
info->IER |= UART_IER_THRI;
|
| 1149 |
|
|
outb(info->IER, info->ioaddr + UART_IER);
|
| 1150 |
|
|
|
| 1151 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1152 |
|
|
}
|
| 1153 |
|
|
|
| 1154 |
|
|
static int mxser_write_room(struct tty_struct *tty)
|
| 1155 |
|
|
{
|
| 1156 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1157 |
|
|
int ret;
|
| 1158 |
|
|
|
| 1159 |
|
|
ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
|
| 1160 |
|
|
if (ret < 0)
|
| 1161 |
|
|
ret = 0;
|
| 1162 |
|
|
return ret;
|
| 1163 |
|
|
}
|
| 1164 |
|
|
|
| 1165 |
|
|
static int mxser_chars_in_buffer(struct tty_struct *tty)
|
| 1166 |
|
|
{
|
| 1167 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1168 |
|
|
return info->xmit_cnt;
|
| 1169 |
|
|
}
|
| 1170 |
|
|
|
| 1171 |
|
|
static void mxser_flush_buffer(struct tty_struct *tty)
|
| 1172 |
|
|
{
|
| 1173 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1174 |
|
|
char fcr;
|
| 1175 |
|
|
unsigned long flags;
|
| 1176 |
|
|
|
| 1177 |
|
|
|
| 1178 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1179 |
|
|
info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
|
| 1180 |
|
|
|
| 1181 |
|
|
fcr = inb(info->ioaddr + UART_FCR);
|
| 1182 |
|
|
outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
|
| 1183 |
|
|
info->ioaddr + UART_FCR);
|
| 1184 |
|
|
outb(fcr, info->ioaddr + UART_FCR);
|
| 1185 |
|
|
|
| 1186 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1187 |
|
|
|
| 1188 |
|
|
tty_wakeup(tty);
|
| 1189 |
|
|
}
|
| 1190 |
|
|
|
| 1191 |
|
|
/*
|
| 1192 |
|
|
* ------------------------------------------------------------
|
| 1193 |
|
|
* friends of mxser_ioctl()
|
| 1194 |
|
|
* ------------------------------------------------------------
|
| 1195 |
|
|
*/
|
| 1196 |
|
|
static int mxser_get_serial_info(struct mxser_port *info,
|
| 1197 |
|
|
struct serial_struct __user *retinfo)
|
| 1198 |
|
|
{
|
| 1199 |
|
|
struct serial_struct tmp;
|
| 1200 |
|
|
|
| 1201 |
|
|
if (!retinfo)
|
| 1202 |
|
|
return -EFAULT;
|
| 1203 |
|
|
memset(&tmp, 0, sizeof(tmp));
|
| 1204 |
|
|
tmp.type = info->type;
|
| 1205 |
|
|
tmp.line = info->tty->index;
|
| 1206 |
|
|
tmp.port = info->ioaddr;
|
| 1207 |
|
|
tmp.irq = info->board->irq;
|
| 1208 |
|
|
tmp.flags = info->flags;
|
| 1209 |
|
|
tmp.baud_base = info->baud_base;
|
| 1210 |
|
|
tmp.close_delay = info->close_delay;
|
| 1211 |
|
|
tmp.closing_wait = info->closing_wait;
|
| 1212 |
|
|
tmp.custom_divisor = info->custom_divisor;
|
| 1213 |
|
|
tmp.hub6 = 0;
|
| 1214 |
|
|
if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
|
| 1215 |
|
|
return -EFAULT;
|
| 1216 |
|
|
return 0;
|
| 1217 |
|
|
}
|
| 1218 |
|
|
|
| 1219 |
|
|
static int mxser_set_serial_info(struct mxser_port *info,
|
| 1220 |
|
|
struct serial_struct __user *new_info)
|
| 1221 |
|
|
{
|
| 1222 |
|
|
struct serial_struct new_serial;
|
| 1223 |
|
|
unsigned long sl_flags;
|
| 1224 |
|
|
unsigned int flags;
|
| 1225 |
|
|
int retval = 0;
|
| 1226 |
|
|
|
| 1227 |
|
|
if (!new_info || !info->ioaddr)
|
| 1228 |
|
|
return -EFAULT;
|
| 1229 |
|
|
if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
|
| 1230 |
|
|
return -EFAULT;
|
| 1231 |
|
|
|
| 1232 |
|
|
if ((new_serial.irq != info->board->irq) ||
|
| 1233 |
|
|
(new_serial.port != info->ioaddr) ||
|
| 1234 |
|
|
(new_serial.custom_divisor != info->custom_divisor) ||
|
| 1235 |
|
|
(new_serial.baud_base != info->baud_base))
|
| 1236 |
|
|
return -EPERM;
|
| 1237 |
|
|
|
| 1238 |
|
|
flags = info->flags & ASYNC_SPD_MASK;
|
| 1239 |
|
|
|
| 1240 |
|
|
if (!capable(CAP_SYS_ADMIN)) {
|
| 1241 |
|
|
if ((new_serial.baud_base != info->baud_base) ||
|
| 1242 |
|
|
(new_serial.close_delay != info->close_delay) ||
|
| 1243 |
|
|
((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK)))
|
| 1244 |
|
|
return -EPERM;
|
| 1245 |
|
|
info->flags = ((info->flags & ~ASYNC_USR_MASK) |
|
| 1246 |
|
|
(new_serial.flags & ASYNC_USR_MASK));
|
| 1247 |
|
|
} else {
|
| 1248 |
|
|
/*
|
| 1249 |
|
|
* OK, past this point, all the error checking has been done.
|
| 1250 |
|
|
* At this point, we start making changes.....
|
| 1251 |
|
|
*/
|
| 1252 |
|
|
info->flags = ((info->flags & ~ASYNC_FLAGS) |
|
| 1253 |
|
|
(new_serial.flags & ASYNC_FLAGS));
|
| 1254 |
|
|
info->close_delay = new_serial.close_delay * HZ / 100;
|
| 1255 |
|
|
info->closing_wait = new_serial.closing_wait * HZ / 100;
|
| 1256 |
|
|
info->tty->low_latency =
|
| 1257 |
|
|
(info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
|
| 1258 |
|
|
info->tty->low_latency = 0;
|
| 1259 |
|
|
}
|
| 1260 |
|
|
|
| 1261 |
|
|
info->type = new_serial.type;
|
| 1262 |
|
|
|
| 1263 |
|
|
process_txrx_fifo(info);
|
| 1264 |
|
|
|
| 1265 |
|
|
if (info->flags & ASYNC_INITIALIZED) {
|
| 1266 |
|
|
if (flags != (info->flags & ASYNC_SPD_MASK)) {
|
| 1267 |
|
|
spin_lock_irqsave(&info->slock, sl_flags);
|
| 1268 |
|
|
mxser_change_speed(info, NULL);
|
| 1269 |
|
|
spin_unlock_irqrestore(&info->slock, sl_flags);
|
| 1270 |
|
|
}
|
| 1271 |
|
|
} else
|
| 1272 |
|
|
retval = mxser_startup(info);
|
| 1273 |
|
|
|
| 1274 |
|
|
return retval;
|
| 1275 |
|
|
}
|
| 1276 |
|
|
|
| 1277 |
|
|
/*
|
| 1278 |
|
|
* mxser_get_lsr_info - get line status register info
|
| 1279 |
|
|
*
|
| 1280 |
|
|
* Purpose: Let user call ioctl() to get info when the UART physically
|
| 1281 |
|
|
* is emptied. On bus types like RS485, the transmitter must
|
| 1282 |
|
|
* release the bus after transmitting. This must be done when
|
| 1283 |
|
|
* the transmit shift register is empty, not be done when the
|
| 1284 |
|
|
* transmit holding register is empty. This functionality
|
| 1285 |
|
|
* allows an RS485 driver to be written in user space.
|
| 1286 |
|
|
*/
|
| 1287 |
|
|
static int mxser_get_lsr_info(struct mxser_port *info,
|
| 1288 |
|
|
unsigned int __user *value)
|
| 1289 |
|
|
{
|
| 1290 |
|
|
unsigned char status;
|
| 1291 |
|
|
unsigned int result;
|
| 1292 |
|
|
unsigned long flags;
|
| 1293 |
|
|
|
| 1294 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1295 |
|
|
status = inb(info->ioaddr + UART_LSR);
|
| 1296 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1297 |
|
|
result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
|
| 1298 |
|
|
return put_user(result, value);
|
| 1299 |
|
|
}
|
| 1300 |
|
|
|
| 1301 |
|
|
/*
|
| 1302 |
|
|
* This routine sends a break character out the serial port.
|
| 1303 |
|
|
*/
|
| 1304 |
|
|
static void mxser_send_break(struct mxser_port *info, int duration)
|
| 1305 |
|
|
{
|
| 1306 |
|
|
unsigned long flags;
|
| 1307 |
|
|
|
| 1308 |
|
|
if (!info->ioaddr)
|
| 1309 |
|
|
return;
|
| 1310 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 1311 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1312 |
|
|
outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
|
| 1313 |
|
|
info->ioaddr + UART_LCR);
|
| 1314 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1315 |
|
|
schedule_timeout(duration);
|
| 1316 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1317 |
|
|
outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC,
|
| 1318 |
|
|
info->ioaddr + UART_LCR);
|
| 1319 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1320 |
|
|
}
|
| 1321 |
|
|
|
| 1322 |
|
|
static int mxser_tiocmget(struct tty_struct *tty, struct file *file)
|
| 1323 |
|
|
{
|
| 1324 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1325 |
|
|
unsigned char control, status;
|
| 1326 |
|
|
unsigned long flags;
|
| 1327 |
|
|
|
| 1328 |
|
|
|
| 1329 |
|
|
if (tty->index == MXSER_PORTS)
|
| 1330 |
|
|
return -ENOIOCTLCMD;
|
| 1331 |
|
|
if (test_bit(TTY_IO_ERROR, &tty->flags))
|
| 1332 |
|
|
return -EIO;
|
| 1333 |
|
|
|
| 1334 |
|
|
control = info->MCR;
|
| 1335 |
|
|
|
| 1336 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1337 |
|
|
status = inb(info->ioaddr + UART_MSR);
|
| 1338 |
|
|
if (status & UART_MSR_ANY_DELTA)
|
| 1339 |
|
|
mxser_check_modem_status(info, status);
|
| 1340 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1341 |
|
|
return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) |
|
| 1342 |
|
|
((control & UART_MCR_DTR) ? TIOCM_DTR : 0) |
|
| 1343 |
|
|
((status & UART_MSR_DCD) ? TIOCM_CAR : 0) |
|
| 1344 |
|
|
((status & UART_MSR_RI) ? TIOCM_RNG : 0) |
|
| 1345 |
|
|
((status & UART_MSR_DSR) ? TIOCM_DSR : 0) |
|
| 1346 |
|
|
((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
|
| 1347 |
|
|
}
|
| 1348 |
|
|
|
| 1349 |
|
|
static int mxser_tiocmset(struct tty_struct *tty, struct file *file,
|
| 1350 |
|
|
unsigned int set, unsigned int clear)
|
| 1351 |
|
|
{
|
| 1352 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1353 |
|
|
unsigned long flags;
|
| 1354 |
|
|
|
| 1355 |
|
|
|
| 1356 |
|
|
if (tty->index == MXSER_PORTS)
|
| 1357 |
|
|
return -ENOIOCTLCMD;
|
| 1358 |
|
|
if (test_bit(TTY_IO_ERROR, &tty->flags))
|
| 1359 |
|
|
return -EIO;
|
| 1360 |
|
|
|
| 1361 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1362 |
|
|
|
| 1363 |
|
|
if (set & TIOCM_RTS)
|
| 1364 |
|
|
info->MCR |= UART_MCR_RTS;
|
| 1365 |
|
|
if (set & TIOCM_DTR)
|
| 1366 |
|
|
info->MCR |= UART_MCR_DTR;
|
| 1367 |
|
|
|
| 1368 |
|
|
if (clear & TIOCM_RTS)
|
| 1369 |
|
|
info->MCR &= ~UART_MCR_RTS;
|
| 1370 |
|
|
if (clear & TIOCM_DTR)
|
| 1371 |
|
|
info->MCR &= ~UART_MCR_DTR;
|
| 1372 |
|
|
|
| 1373 |
|
|
outb(info->MCR, info->ioaddr + UART_MCR);
|
| 1374 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1375 |
|
|
return 0;
|
| 1376 |
|
|
}
|
| 1377 |
|
|
|
| 1378 |
|
|
static int __init mxser_program_mode(int port)
|
| 1379 |
|
|
{
|
| 1380 |
|
|
int id, i, j, n;
|
| 1381 |
|
|
|
| 1382 |
|
|
outb(0, port);
|
| 1383 |
|
|
outb(0, port);
|
| 1384 |
|
|
outb(0, port);
|
| 1385 |
|
|
(void)inb(port);
|
| 1386 |
|
|
(void)inb(port);
|
| 1387 |
|
|
outb(0, port);
|
| 1388 |
|
|
(void)inb(port);
|
| 1389 |
|
|
|
| 1390 |
|
|
id = inb(port + 1) & 0x1F;
|
| 1391 |
|
|
if ((id != C168_ASIC_ID) &&
|
| 1392 |
|
|
(id != C104_ASIC_ID) &&
|
| 1393 |
|
|
(id != C102_ASIC_ID) &&
|
| 1394 |
|
|
(id != CI132_ASIC_ID) &&
|
| 1395 |
|
|
(id != CI134_ASIC_ID) &&
|
| 1396 |
|
|
(id != CI104J_ASIC_ID))
|
| 1397 |
|
|
return -1;
|
| 1398 |
|
|
for (i = 0, j = 0; i < 4; i++) {
|
| 1399 |
|
|
n = inb(port + 2);
|
| 1400 |
|
|
if (n == 'M') {
|
| 1401 |
|
|
j = 1;
|
| 1402 |
|
|
} else if ((j == 1) && (n == 1)) {
|
| 1403 |
|
|
j = 2;
|
| 1404 |
|
|
break;
|
| 1405 |
|
|
} else
|
| 1406 |
|
|
j = 0;
|
| 1407 |
|
|
}
|
| 1408 |
|
|
if (j != 2)
|
| 1409 |
|
|
id = -2;
|
| 1410 |
|
|
return id;
|
| 1411 |
|
|
}
|
| 1412 |
|
|
|
| 1413 |
|
|
static void __init mxser_normal_mode(int port)
|
| 1414 |
|
|
{
|
| 1415 |
|
|
int i, n;
|
| 1416 |
|
|
|
| 1417 |
|
|
outb(0xA5, port + 1);
|
| 1418 |
|
|
outb(0x80, port + 3);
|
| 1419 |
|
|
outb(12, port + 0); /* 9600 bps */
|
| 1420 |
|
|
outb(0, port + 1);
|
| 1421 |
|
|
outb(0x03, port + 3); /* 8 data bits */
|
| 1422 |
|
|
outb(0x13, port + 4); /* loop back mode */
|
| 1423 |
|
|
for (i = 0; i < 16; i++) {
|
| 1424 |
|
|
n = inb(port + 5);
|
| 1425 |
|
|
if ((n & 0x61) == 0x60)
|
| 1426 |
|
|
break;
|
| 1427 |
|
|
if ((n & 1) == 1)
|
| 1428 |
|
|
(void)inb(port);
|
| 1429 |
|
|
}
|
| 1430 |
|
|
outb(0x00, port + 4);
|
| 1431 |
|
|
}
|
| 1432 |
|
|
|
| 1433 |
|
|
#define CHIP_SK 0x01 /* Serial Data Clock in Eprom */
|
| 1434 |
|
|
#define CHIP_DO 0x02 /* Serial Data Output in Eprom */
|
| 1435 |
|
|
#define CHIP_CS 0x04 /* Serial Chip Select in Eprom */
|
| 1436 |
|
|
#define CHIP_DI 0x08 /* Serial Data Input in Eprom */
|
| 1437 |
|
|
#define EN_CCMD 0x000 /* Chip's command register */
|
| 1438 |
|
|
#define EN0_RSARLO 0x008 /* Remote start address reg 0 */
|
| 1439 |
|
|
#define EN0_RSARHI 0x009 /* Remote start address reg 1 */
|
| 1440 |
|
|
#define EN0_RCNTLO 0x00A /* Remote byte count reg WR */
|
| 1441 |
|
|
#define EN0_RCNTHI 0x00B /* Remote byte count reg WR */
|
| 1442 |
|
|
#define EN0_DCFG 0x00E /* Data configuration reg WR */
|
| 1443 |
|
|
#define EN0_PORT 0x010 /* Rcv missed frame error counter RD */
|
| 1444 |
|
|
#define ENC_PAGE0 0x000 /* Select page 0 of chip registers */
|
| 1445 |
|
|
#define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */
|
| 1446 |
|
|
static int __init mxser_read_register(int port, unsigned short *regs)
|
| 1447 |
|
|
{
|
| 1448 |
|
|
int i, k, value, id;
|
| 1449 |
|
|
unsigned int j;
|
| 1450 |
|
|
|
| 1451 |
|
|
id = mxser_program_mode(port);
|
| 1452 |
|
|
if (id < 0)
|
| 1453 |
|
|
return id;
|
| 1454 |
|
|
for (i = 0; i < 14; i++) {
|
| 1455 |
|
|
k = (i & 0x3F) | 0x180;
|
| 1456 |
|
|
for (j = 0x100; j > 0; j >>= 1) {
|
| 1457 |
|
|
outb(CHIP_CS, port);
|
| 1458 |
|
|
if (k & j) {
|
| 1459 |
|
|
outb(CHIP_CS | CHIP_DO, port);
|
| 1460 |
|
|
outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */
|
| 1461 |
|
|
} else {
|
| 1462 |
|
|
outb(CHIP_CS, port);
|
| 1463 |
|
|
outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */
|
| 1464 |
|
|
}
|
| 1465 |
|
|
}
|
| 1466 |
|
|
(void)inb(port);
|
| 1467 |
|
|
value = 0;
|
| 1468 |
|
|
for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) {
|
| 1469 |
|
|
outb(CHIP_CS, port);
|
| 1470 |
|
|
outb(CHIP_CS | CHIP_SK, port);
|
| 1471 |
|
|
if (inb(port) & CHIP_DI)
|
| 1472 |
|
|
value |= j;
|
| 1473 |
|
|
}
|
| 1474 |
|
|
regs[i] = value;
|
| 1475 |
|
|
outb(0, port);
|
| 1476 |
|
|
}
|
| 1477 |
|
|
mxser_normal_mode(port);
|
| 1478 |
|
|
return id;
|
| 1479 |
|
|
}
|
| 1480 |
|
|
|
| 1481 |
|
|
static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
|
| 1482 |
|
|
{
|
| 1483 |
|
|
struct mxser_port *port;
|
| 1484 |
|
|
int result, status;
|
| 1485 |
|
|
unsigned int i, j;
|
| 1486 |
|
|
|
| 1487 |
|
|
switch (cmd) {
|
| 1488 |
|
|
case MOXA_GET_CONF:
|
| 1489 |
|
|
/* if (copy_to_user(argp, mxsercfg,
|
| 1490 |
|
|
sizeof(struct mxser_hwconf) * 4))
|
| 1491 |
|
|
return -EFAULT;
|
| 1492 |
|
|
return 0;*/
|
| 1493 |
|
|
return -ENXIO;
|
| 1494 |
|
|
case MOXA_GET_MAJOR:
|
| 1495 |
|
|
if (copy_to_user(argp, &ttymajor, sizeof(int)))
|
| 1496 |
|
|
return -EFAULT;
|
| 1497 |
|
|
return 0;
|
| 1498 |
|
|
|
| 1499 |
|
|
case MOXA_GET_CUMAJOR:
|
| 1500 |
|
|
if (copy_to_user(argp, &calloutmajor, sizeof(int)))
|
| 1501 |
|
|
return -EFAULT;
|
| 1502 |
|
|
return 0;
|
| 1503 |
|
|
|
| 1504 |
|
|
case MOXA_CHKPORTENABLE:
|
| 1505 |
|
|
result = 0;
|
| 1506 |
|
|
|
| 1507 |
|
|
for (i = 0; i < MXSER_BOARDS; i++)
|
| 1508 |
|
|
for (j = 0; j < MXSER_PORTS_PER_BOARD; j++)
|
| 1509 |
|
|
if (mxser_boards[i].ports[j].ioaddr)
|
| 1510 |
|
|
result |= (1 << i);
|
| 1511 |
|
|
|
| 1512 |
|
|
return put_user(result, (unsigned long __user *)argp);
|
| 1513 |
|
|
case MOXA_GETDATACOUNT:
|
| 1514 |
|
|
if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log)))
|
| 1515 |
|
|
return -EFAULT;
|
| 1516 |
|
|
return 0;
|
| 1517 |
|
|
case MOXA_GETMSTATUS:
|
| 1518 |
|
|
for (i = 0; i < MXSER_BOARDS; i++)
|
| 1519 |
|
|
for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) {
|
| 1520 |
|
|
port = &mxser_boards[i].ports[j];
|
| 1521 |
|
|
|
| 1522 |
|
|
GMStatus[i].ri = 0;
|
| 1523 |
|
|
if (!port->ioaddr) {
|
| 1524 |
|
|
GMStatus[i].dcd = 0;
|
| 1525 |
|
|
GMStatus[i].dsr = 0;
|
| 1526 |
|
|
GMStatus[i].cts = 0;
|
| 1527 |
|
|
continue;
|
| 1528 |
|
|
}
|
| 1529 |
|
|
|
| 1530 |
|
|
if (!port->tty || !port->tty->termios)
|
| 1531 |
|
|
GMStatus[i].cflag =
|
| 1532 |
|
|
port->normal_termios.c_cflag;
|
| 1533 |
|
|
else
|
| 1534 |
|
|
GMStatus[i].cflag =
|
| 1535 |
|
|
port->tty->termios->c_cflag;
|
| 1536 |
|
|
|
| 1537 |
|
|
status = inb(port->ioaddr + UART_MSR);
|
| 1538 |
|
|
if (status & 0x80 /*UART_MSR_DCD */ )
|
| 1539 |
|
|
GMStatus[i].dcd = 1;
|
| 1540 |
|
|
else
|
| 1541 |
|
|
GMStatus[i].dcd = 0;
|
| 1542 |
|
|
|
| 1543 |
|
|
if (status & 0x20 /*UART_MSR_DSR */ )
|
| 1544 |
|
|
GMStatus[i].dsr = 1;
|
| 1545 |
|
|
else
|
| 1546 |
|
|
GMStatus[i].dsr = 0;
|
| 1547 |
|
|
|
| 1548 |
|
|
|
| 1549 |
|
|
if (status & 0x10 /*UART_MSR_CTS */ )
|
| 1550 |
|
|
GMStatus[i].cts = 1;
|
| 1551 |
|
|
else
|
| 1552 |
|
|
GMStatus[i].cts = 0;
|
| 1553 |
|
|
}
|
| 1554 |
|
|
if (copy_to_user(argp, GMStatus,
|
| 1555 |
|
|
sizeof(struct mxser_mstatus) * MXSER_PORTS))
|
| 1556 |
|
|
return -EFAULT;
|
| 1557 |
|
|
return 0;
|
| 1558 |
|
|
case MOXA_ASPP_MON_EXT: {
|
| 1559 |
|
|
int p, shiftbit;
|
| 1560 |
|
|
unsigned long opmode;
|
| 1561 |
|
|
unsigned cflag, iflag;
|
| 1562 |
|
|
|
| 1563 |
|
|
for (i = 0; i < MXSER_BOARDS; i++)
|
| 1564 |
|
|
for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) {
|
| 1565 |
|
|
port = &mxser_boards[i].ports[j];
|
| 1566 |
|
|
if (!port->ioaddr)
|
| 1567 |
|
|
continue;
|
| 1568 |
|
|
|
| 1569 |
|
|
status = mxser_get_msr(port->ioaddr, 0, i);
|
| 1570 |
|
|
|
| 1571 |
|
|
if (status & UART_MSR_TERI)
|
| 1572 |
|
|
port->icount.rng++;
|
| 1573 |
|
|
if (status & UART_MSR_DDSR)
|
| 1574 |
|
|
port->icount.dsr++;
|
| 1575 |
|
|
if (status & UART_MSR_DDCD)
|
| 1576 |
|
|
port->icount.dcd++;
|
| 1577 |
|
|
if (status & UART_MSR_DCTS)
|
| 1578 |
|
|
port->icount.cts++;
|
| 1579 |
|
|
|
| 1580 |
|
|
port->mon_data.modem_status = status;
|
| 1581 |
|
|
mon_data_ext.rx_cnt[i] = port->mon_data.rxcnt;
|
| 1582 |
|
|
mon_data_ext.tx_cnt[i] = port->mon_data.txcnt;
|
| 1583 |
|
|
mon_data_ext.up_rxcnt[i] =
|
| 1584 |
|
|
port->mon_data.up_rxcnt;
|
| 1585 |
|
|
mon_data_ext.up_txcnt[i] =
|
| 1586 |
|
|
port->mon_data.up_txcnt;
|
| 1587 |
|
|
mon_data_ext.modem_status[i] =
|
| 1588 |
|
|
port->mon_data.modem_status;
|
| 1589 |
|
|
mon_data_ext.baudrate[i] = port->realbaud;
|
| 1590 |
|
|
|
| 1591 |
|
|
if (!port->tty || !port->tty->termios) {
|
| 1592 |
|
|
cflag = port->normal_termios.c_cflag;
|
| 1593 |
|
|
iflag = port->normal_termios.c_iflag;
|
| 1594 |
|
|
} else {
|
| 1595 |
|
|
cflag = port->tty->termios->c_cflag;
|
| 1596 |
|
|
iflag = port->tty->termios->c_iflag;
|
| 1597 |
|
|
}
|
| 1598 |
|
|
|
| 1599 |
|
|
mon_data_ext.databits[i] = cflag & CSIZE;
|
| 1600 |
|
|
|
| 1601 |
|
|
mon_data_ext.stopbits[i] = cflag & CSTOPB;
|
| 1602 |
|
|
|
| 1603 |
|
|
mon_data_ext.parity[i] =
|
| 1604 |
|
|
cflag & (PARENB | PARODD | CMSPAR);
|
| 1605 |
|
|
|
| 1606 |
|
|
mon_data_ext.flowctrl[i] = 0x00;
|
| 1607 |
|
|
|
| 1608 |
|
|
if (cflag & CRTSCTS)
|
| 1609 |
|
|
mon_data_ext.flowctrl[i] |= 0x03;
|
| 1610 |
|
|
|
| 1611 |
|
|
if (iflag & (IXON | IXOFF))
|
| 1612 |
|
|
mon_data_ext.flowctrl[i] |= 0x0C;
|
| 1613 |
|
|
|
| 1614 |
|
|
if (port->type == PORT_16550A)
|
| 1615 |
|
|
mon_data_ext.fifo[i] = 1;
|
| 1616 |
|
|
else
|
| 1617 |
|
|
mon_data_ext.fifo[i] = 0;
|
| 1618 |
|
|
|
| 1619 |
|
|
p = i % 4;
|
| 1620 |
|
|
shiftbit = p * 2;
|
| 1621 |
|
|
opmode = inb(port->opmode_ioaddr) >> shiftbit;
|
| 1622 |
|
|
opmode &= OP_MODE_MASK;
|
| 1623 |
|
|
|
| 1624 |
|
|
mon_data_ext.iftype[i] = opmode;
|
| 1625 |
|
|
|
| 1626 |
|
|
}
|
| 1627 |
|
|
if (copy_to_user(argp, &mon_data_ext,
|
| 1628 |
|
|
sizeof(mon_data_ext)))
|
| 1629 |
|
|
return -EFAULT;
|
| 1630 |
|
|
|
| 1631 |
|
|
return 0;
|
| 1632 |
|
|
|
| 1633 |
|
|
} default:
|
| 1634 |
|
|
return -ENOIOCTLCMD;
|
| 1635 |
|
|
}
|
| 1636 |
|
|
return 0;
|
| 1637 |
|
|
}
|
| 1638 |
|
|
|
| 1639 |
|
|
static int mxser_ioctl(struct tty_struct *tty, struct file *file,
|
| 1640 |
|
|
unsigned int cmd, unsigned long arg)
|
| 1641 |
|
|
{
|
| 1642 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1643 |
|
|
struct async_icount cprev, cnow; /* kernel counter temps */
|
| 1644 |
|
|
struct serial_icounter_struct __user *p_cuser;
|
| 1645 |
|
|
unsigned long templ;
|
| 1646 |
|
|
unsigned long flags;
|
| 1647 |
|
|
unsigned int i;
|
| 1648 |
|
|
void __user *argp = (void __user *)arg;
|
| 1649 |
|
|
int retval;
|
| 1650 |
|
|
|
| 1651 |
|
|
if (tty->index == MXSER_PORTS)
|
| 1652 |
|
|
return mxser_ioctl_special(cmd, argp);
|
| 1653 |
|
|
|
| 1654 |
|
|
if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) {
|
| 1655 |
|
|
int p;
|
| 1656 |
|
|
unsigned long opmode;
|
| 1657 |
|
|
static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f };
|
| 1658 |
|
|
int shiftbit;
|
| 1659 |
|
|
unsigned char val, mask;
|
| 1660 |
|
|
|
| 1661 |
|
|
p = tty->index % 4;
|
| 1662 |
|
|
if (cmd == MOXA_SET_OP_MODE) {
|
| 1663 |
|
|
if (get_user(opmode, (int __user *) argp))
|
| 1664 |
|
|
return -EFAULT;
|
| 1665 |
|
|
if (opmode != RS232_MODE &&
|
| 1666 |
|
|
opmode != RS485_2WIRE_MODE &&
|
| 1667 |
|
|
opmode != RS422_MODE &&
|
| 1668 |
|
|
opmode != RS485_4WIRE_MODE)
|
| 1669 |
|
|
return -EFAULT;
|
| 1670 |
|
|
mask = ModeMask[p];
|
| 1671 |
|
|
shiftbit = p * 2;
|
| 1672 |
|
|
val = inb(info->opmode_ioaddr);
|
| 1673 |
|
|
val &= mask;
|
| 1674 |
|
|
val |= (opmode << shiftbit);
|
| 1675 |
|
|
outb(val, info->opmode_ioaddr);
|
| 1676 |
|
|
} else {
|
| 1677 |
|
|
shiftbit = p * 2;
|
| 1678 |
|
|
opmode = inb(info->opmode_ioaddr) >> shiftbit;
|
| 1679 |
|
|
opmode &= OP_MODE_MASK;
|
| 1680 |
|
|
if (copy_to_user(argp, &opmode, sizeof(int)))
|
| 1681 |
|
|
return -EFAULT;
|
| 1682 |
|
|
}
|
| 1683 |
|
|
return 0;
|
| 1684 |
|
|
}
|
| 1685 |
|
|
|
| 1686 |
|
|
if (cmd == MOXA_SET_SPECIAL_BAUD_RATE) {
|
| 1687 |
|
|
int speed;
|
| 1688 |
|
|
|
| 1689 |
|
|
if (get_user(speed, (int __user *)argp))
|
| 1690 |
|
|
return -EFAULT;
|
| 1691 |
|
|
if (speed <= 0 || speed > info->max_baud)
|
| 1692 |
|
|
return -EFAULT;
|
| 1693 |
|
|
if (!info->tty || !info->tty->termios || !info->ioaddr)
|
| 1694 |
|
|
return 0;
|
| 1695 |
|
|
info->tty->termios->c_cflag &= ~(CBAUD | CBAUDEX);
|
| 1696 |
|
|
for (i = 0; i < BAUD_TABLE_NO; i++)
|
| 1697 |
|
|
if (speed == mxvar_baud_table[i])
|
| 1698 |
|
|
break;
|
| 1699 |
|
|
if (i == BAUD_TABLE_NO) {
|
| 1700 |
|
|
info->tty->termios->c_cflag |= B_SPEC;
|
| 1701 |
|
|
} else if (speed != 0)
|
| 1702 |
|
|
info->tty->termios->c_cflag |= mxvar_baud_table1[i];
|
| 1703 |
|
|
|
| 1704 |
|
|
info->speed = speed;
|
| 1705 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1706 |
|
|
mxser_change_speed(info, NULL);
|
| 1707 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1708 |
|
|
|
| 1709 |
|
|
return 0;
|
| 1710 |
|
|
} else if (cmd == MOXA_GET_SPECIAL_BAUD_RATE) {
|
| 1711 |
|
|
if (copy_to_user(argp, &info->speed, sizeof(int)))
|
| 1712 |
|
|
return -EFAULT;
|
| 1713 |
|
|
return 0;
|
| 1714 |
|
|
}
|
| 1715 |
|
|
|
| 1716 |
|
|
if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && cmd != TIOCGICOUNT &&
|
| 1717 |
|
|
test_bit(TTY_IO_ERROR, &tty->flags))
|
| 1718 |
|
|
return -EIO;
|
| 1719 |
|
|
|
| 1720 |
|
|
switch (cmd) {
|
| 1721 |
|
|
case TCSBRK: /* SVID version: non-zero arg --> no break */
|
| 1722 |
|
|
retval = tty_check_change(tty);
|
| 1723 |
|
|
if (retval)
|
| 1724 |
|
|
return retval;
|
| 1725 |
|
|
tty_wait_until_sent(tty, 0);
|
| 1726 |
|
|
if (!arg)
|
| 1727 |
|
|
mxser_send_break(info, HZ / 4); /* 1/4 second */
|
| 1728 |
|
|
return 0;
|
| 1729 |
|
|
case TCSBRKP: /* support for POSIX tcsendbreak() */
|
| 1730 |
|
|
retval = tty_check_change(tty);
|
| 1731 |
|
|
if (retval)
|
| 1732 |
|
|
return retval;
|
| 1733 |
|
|
tty_wait_until_sent(tty, 0);
|
| 1734 |
|
|
mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4);
|
| 1735 |
|
|
return 0;
|
| 1736 |
|
|
case TIOCGSOFTCAR:
|
| 1737 |
|
|
return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
|
| 1738 |
|
|
case TIOCSSOFTCAR:
|
| 1739 |
|
|
if (get_user(templ, (unsigned long __user *) argp))
|
| 1740 |
|
|
return -EFAULT;
|
| 1741 |
|
|
arg = templ;
|
| 1742 |
|
|
tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
|
| 1743 |
|
|
return 0;
|
| 1744 |
|
|
case TIOCGSERIAL:
|
| 1745 |
|
|
return mxser_get_serial_info(info, argp);
|
| 1746 |
|
|
case TIOCSSERIAL:
|
| 1747 |
|
|
return mxser_set_serial_info(info, argp);
|
| 1748 |
|
|
case TIOCSERGETLSR: /* Get line status register */
|
| 1749 |
|
|
return mxser_get_lsr_info(info, argp);
|
| 1750 |
|
|
/*
|
| 1751 |
|
|
* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
|
| 1752 |
|
|
* - mask passed in arg for lines of interest
|
| 1753 |
|
|
* (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
|
| 1754 |
|
|
* Caller should use TIOCGICOUNT to see which one it was
|
| 1755 |
|
|
*/
|
| 1756 |
|
|
case TIOCMIWAIT:
|
| 1757 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1758 |
|
|
cnow = info->icount; /* note the counters on entry */
|
| 1759 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1760 |
|
|
|
| 1761 |
|
|
wait_event_interruptible(info->delta_msr_wait, ({
|
| 1762 |
|
|
cprev = cnow;
|
| 1763 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1764 |
|
|
cnow = info->icount; /* atomic copy */
|
| 1765 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1766 |
|
|
|
| 1767 |
|
|
((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
|
| 1768 |
|
|
((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
|
| 1769 |
|
|
((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
|
| 1770 |
|
|
((arg & TIOCM_CTS) && (cnow.cts != cprev.cts));
|
| 1771 |
|
|
}));
|
| 1772 |
|
|
break;
|
| 1773 |
|
|
/*
|
| 1774 |
|
|
* Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
|
| 1775 |
|
|
* Return: write counters to the user passed counter struct
|
| 1776 |
|
|
* NB: both 1->0 and 0->1 transitions are counted except for
|
| 1777 |
|
|
* RI where only 0->1 is counted.
|
| 1778 |
|
|
*/
|
| 1779 |
|
|
case TIOCGICOUNT:
|
| 1780 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1781 |
|
|
cnow = info->icount;
|
| 1782 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1783 |
|
|
p_cuser = argp;
|
| 1784 |
|
|
if (put_user(cnow.frame, &p_cuser->frame))
|
| 1785 |
|
|
return -EFAULT;
|
| 1786 |
|
|
if (put_user(cnow.brk, &p_cuser->brk))
|
| 1787 |
|
|
return -EFAULT;
|
| 1788 |
|
|
if (put_user(cnow.overrun, &p_cuser->overrun))
|
| 1789 |
|
|
return -EFAULT;
|
| 1790 |
|
|
if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
|
| 1791 |
|
|
return -EFAULT;
|
| 1792 |
|
|
if (put_user(cnow.parity, &p_cuser->parity))
|
| 1793 |
|
|
return -EFAULT;
|
| 1794 |
|
|
if (put_user(cnow.rx, &p_cuser->rx))
|
| 1795 |
|
|
return -EFAULT;
|
| 1796 |
|
|
if (put_user(cnow.tx, &p_cuser->tx))
|
| 1797 |
|
|
return -EFAULT;
|
| 1798 |
|
|
put_user(cnow.cts, &p_cuser->cts);
|
| 1799 |
|
|
put_user(cnow.dsr, &p_cuser->dsr);
|
| 1800 |
|
|
put_user(cnow.rng, &p_cuser->rng);
|
| 1801 |
|
|
put_user(cnow.dcd, &p_cuser->dcd);
|
| 1802 |
|
|
return 0;
|
| 1803 |
|
|
case MOXA_HighSpeedOn:
|
| 1804 |
|
|
return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
|
| 1805 |
|
|
case MOXA_SDS_RSTICOUNTER:
|
| 1806 |
|
|
info->mon_data.rxcnt = 0;
|
| 1807 |
|
|
info->mon_data.txcnt = 0;
|
| 1808 |
|
|
return 0;
|
| 1809 |
|
|
case MOXA_ASPP_SETBAUD:{
|
| 1810 |
|
|
long baud;
|
| 1811 |
|
|
if (get_user(baud, (long __user *)argp))
|
| 1812 |
|
|
return -EFAULT;
|
| 1813 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1814 |
|
|
mxser_set_baud(info, baud);
|
| 1815 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1816 |
|
|
return 0;
|
| 1817 |
|
|
}
|
| 1818 |
|
|
case MOXA_ASPP_GETBAUD:
|
| 1819 |
|
|
if (copy_to_user(argp, &info->realbaud, sizeof(long)))
|
| 1820 |
|
|
return -EFAULT;
|
| 1821 |
|
|
|
| 1822 |
|
|
return 0;
|
| 1823 |
|
|
|
| 1824 |
|
|
case MOXA_ASPP_OQUEUE:{
|
| 1825 |
|
|
int len, lsr;
|
| 1826 |
|
|
|
| 1827 |
|
|
len = mxser_chars_in_buffer(tty);
|
| 1828 |
|
|
|
| 1829 |
|
|
lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT;
|
| 1830 |
|
|
|
| 1831 |
|
|
len += (lsr ? 0 : 1);
|
| 1832 |
|
|
|
| 1833 |
|
|
if (copy_to_user(argp, &len, sizeof(int)))
|
| 1834 |
|
|
return -EFAULT;
|
| 1835 |
|
|
|
| 1836 |
|
|
return 0;
|
| 1837 |
|
|
}
|
| 1838 |
|
|
case MOXA_ASPP_MON: {
|
| 1839 |
|
|
int mcr, status;
|
| 1840 |
|
|
|
| 1841 |
|
|
status = mxser_get_msr(info->ioaddr, 1, tty->index);
|
| 1842 |
|
|
mxser_check_modem_status(info, status);
|
| 1843 |
|
|
|
| 1844 |
|
|
mcr = inb(info->ioaddr + UART_MCR);
|
| 1845 |
|
|
if (mcr & MOXA_MUST_MCR_XON_FLAG)
|
| 1846 |
|
|
info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD;
|
| 1847 |
|
|
else
|
| 1848 |
|
|
info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD;
|
| 1849 |
|
|
|
| 1850 |
|
|
if (mcr & MOXA_MUST_MCR_TX_XON)
|
| 1851 |
|
|
info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT;
|
| 1852 |
|
|
else
|
| 1853 |
|
|
info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT;
|
| 1854 |
|
|
|
| 1855 |
|
|
if (info->tty->hw_stopped)
|
| 1856 |
|
|
info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD;
|
| 1857 |
|
|
else
|
| 1858 |
|
|
info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD;
|
| 1859 |
|
|
|
| 1860 |
|
|
if (copy_to_user(argp, &info->mon_data,
|
| 1861 |
|
|
sizeof(struct mxser_mon)))
|
| 1862 |
|
|
return -EFAULT;
|
| 1863 |
|
|
|
| 1864 |
|
|
return 0;
|
| 1865 |
|
|
}
|
| 1866 |
|
|
case MOXA_ASPP_LSTATUS: {
|
| 1867 |
|
|
if (copy_to_user(argp, &info->err_shadow,
|
| 1868 |
|
|
sizeof(unsigned char)))
|
| 1869 |
|
|
return -EFAULT;
|
| 1870 |
|
|
|
| 1871 |
|
|
info->err_shadow = 0;
|
| 1872 |
|
|
return 0;
|
| 1873 |
|
|
}
|
| 1874 |
|
|
case MOXA_SET_BAUD_METHOD: {
|
| 1875 |
|
|
int method;
|
| 1876 |
|
|
|
| 1877 |
|
|
if (get_user(method, (int __user *)argp))
|
| 1878 |
|
|
return -EFAULT;
|
| 1879 |
|
|
mxser_set_baud_method[tty->index] = method;
|
| 1880 |
|
|
if (copy_to_user(argp, &method, sizeof(int)))
|
| 1881 |
|
|
return -EFAULT;
|
| 1882 |
|
|
|
| 1883 |
|
|
return 0;
|
| 1884 |
|
|
}
|
| 1885 |
|
|
default:
|
| 1886 |
|
|
return -ENOIOCTLCMD;
|
| 1887 |
|
|
}
|
| 1888 |
|
|
return 0;
|
| 1889 |
|
|
}
|
| 1890 |
|
|
|
| 1891 |
|
|
static void mxser_stoprx(struct tty_struct *tty)
|
| 1892 |
|
|
{
|
| 1893 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1894 |
|
|
|
| 1895 |
|
|
info->ldisc_stop_rx = 1;
|
| 1896 |
|
|
if (I_IXOFF(tty)) {
|
| 1897 |
|
|
if (info->board->chip_flag) {
|
| 1898 |
|
|
info->IER &= ~MOXA_MUST_RECV_ISR;
|
| 1899 |
|
|
outb(info->IER, info->ioaddr + UART_IER);
|
| 1900 |
|
|
} else {
|
| 1901 |
|
|
info->x_char = STOP_CHAR(tty);
|
| 1902 |
|
|
outb(0, info->ioaddr + UART_IER);
|
| 1903 |
|
|
info->IER |= UART_IER_THRI;
|
| 1904 |
|
|
outb(info->IER, info->ioaddr + UART_IER);
|
| 1905 |
|
|
}
|
| 1906 |
|
|
}
|
| 1907 |
|
|
|
| 1908 |
|
|
if (info->tty->termios->c_cflag & CRTSCTS) {
|
| 1909 |
|
|
info->MCR &= ~UART_MCR_RTS;
|
| 1910 |
|
|
outb(info->MCR, info->ioaddr + UART_MCR);
|
| 1911 |
|
|
}
|
| 1912 |
|
|
}
|
| 1913 |
|
|
|
| 1914 |
|
|
/*
|
| 1915 |
|
|
* This routine is called by the upper-layer tty layer to signal that
|
| 1916 |
|
|
* incoming characters should be throttled.
|
| 1917 |
|
|
*/
|
| 1918 |
|
|
static void mxser_throttle(struct tty_struct *tty)
|
| 1919 |
|
|
{
|
| 1920 |
|
|
mxser_stoprx(tty);
|
| 1921 |
|
|
}
|
| 1922 |
|
|
|
| 1923 |
|
|
static void mxser_unthrottle(struct tty_struct *tty)
|
| 1924 |
|
|
{
|
| 1925 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1926 |
|
|
|
| 1927 |
|
|
/* startrx */
|
| 1928 |
|
|
info->ldisc_stop_rx = 0;
|
| 1929 |
|
|
if (I_IXOFF(tty)) {
|
| 1930 |
|
|
if (info->x_char)
|
| 1931 |
|
|
info->x_char = 0;
|
| 1932 |
|
|
else {
|
| 1933 |
|
|
if (info->board->chip_flag) {
|
| 1934 |
|
|
info->IER |= MOXA_MUST_RECV_ISR;
|
| 1935 |
|
|
outb(info->IER, info->ioaddr + UART_IER);
|
| 1936 |
|
|
} else {
|
| 1937 |
|
|
info->x_char = START_CHAR(tty);
|
| 1938 |
|
|
outb(0, info->ioaddr + UART_IER);
|
| 1939 |
|
|
info->IER |= UART_IER_THRI;
|
| 1940 |
|
|
outb(info->IER, info->ioaddr + UART_IER);
|
| 1941 |
|
|
}
|
| 1942 |
|
|
}
|
| 1943 |
|
|
}
|
| 1944 |
|
|
|
| 1945 |
|
|
if (info->tty->termios->c_cflag & CRTSCTS) {
|
| 1946 |
|
|
info->MCR |= UART_MCR_RTS;
|
| 1947 |
|
|
outb(info->MCR, info->ioaddr + UART_MCR);
|
| 1948 |
|
|
}
|
| 1949 |
|
|
}
|
| 1950 |
|
|
|
| 1951 |
|
|
/*
|
| 1952 |
|
|
* mxser_stop() and mxser_start()
|
| 1953 |
|
|
*
|
| 1954 |
|
|
* This routines are called before setting or resetting tty->stopped.
|
| 1955 |
|
|
* They enable or disable transmitter interrupts, as necessary.
|
| 1956 |
|
|
*/
|
| 1957 |
|
|
static void mxser_stop(struct tty_struct *tty)
|
| 1958 |
|
|
{
|
| 1959 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1960 |
|
|
unsigned long flags;
|
| 1961 |
|
|
|
| 1962 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1963 |
|
|
if (info->IER & UART_IER_THRI) {
|
| 1964 |
|
|
info->IER &= ~UART_IER_THRI;
|
| 1965 |
|
|
outb(info->IER, info->ioaddr + UART_IER);
|
| 1966 |
|
|
}
|
| 1967 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1968 |
|
|
}
|
| 1969 |
|
|
|
| 1970 |
|
|
static void mxser_start(struct tty_struct *tty)
|
| 1971 |
|
|
{
|
| 1972 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1973 |
|
|
unsigned long flags;
|
| 1974 |
|
|
|
| 1975 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1976 |
|
|
if (info->xmit_cnt && info->xmit_buf) {
|
| 1977 |
|
|
outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER);
|
| 1978 |
|
|
info->IER |= UART_IER_THRI;
|
| 1979 |
|
|
outb(info->IER, info->ioaddr + UART_IER);
|
| 1980 |
|
|
}
|
| 1981 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1982 |
|
|
}
|
| 1983 |
|
|
|
| 1984 |
|
|
static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
|
| 1985 |
|
|
{
|
| 1986 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 1987 |
|
|
unsigned long flags;
|
| 1988 |
|
|
|
| 1989 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 1990 |
|
|
mxser_change_speed(info, old_termios);
|
| 1991 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 1992 |
|
|
|
| 1993 |
|
|
if ((old_termios->c_cflag & CRTSCTS) &&
|
| 1994 |
|
|
!(tty->termios->c_cflag & CRTSCTS)) {
|
| 1995 |
|
|
tty->hw_stopped = 0;
|
| 1996 |
|
|
mxser_start(tty);
|
| 1997 |
|
|
}
|
| 1998 |
|
|
|
| 1999 |
|
|
/* Handle sw stopped */
|
| 2000 |
|
|
if ((old_termios->c_iflag & IXON) &&
|
| 2001 |
|
|
!(tty->termios->c_iflag & IXON)) {
|
| 2002 |
|
|
tty->stopped = 0;
|
| 2003 |
|
|
|
| 2004 |
|
|
if (info->board->chip_flag) {
|
| 2005 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 2006 |
|
|
DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
|
| 2007 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 2008 |
|
|
}
|
| 2009 |
|
|
|
| 2010 |
|
|
mxser_start(tty);
|
| 2011 |
|
|
}
|
| 2012 |
|
|
}
|
| 2013 |
|
|
|
| 2014 |
|
|
/*
|
| 2015 |
|
|
* mxser_wait_until_sent() --- wait until the transmitter is empty
|
| 2016 |
|
|
*/
|
| 2017 |
|
|
static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)
|
| 2018 |
|
|
{
|
| 2019 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 2020 |
|
|
unsigned long orig_jiffies, char_time;
|
| 2021 |
|
|
int lsr;
|
| 2022 |
|
|
|
| 2023 |
|
|
if (info->type == PORT_UNKNOWN)
|
| 2024 |
|
|
return;
|
| 2025 |
|
|
|
| 2026 |
|
|
if (info->xmit_fifo_size == 0)
|
| 2027 |
|
|
return; /* Just in case.... */
|
| 2028 |
|
|
|
| 2029 |
|
|
orig_jiffies = jiffies;
|
| 2030 |
|
|
/*
|
| 2031 |
|
|
* Set the check interval to be 1/5 of the estimated time to
|
| 2032 |
|
|
* send a single character, and make it at least 1. The check
|
| 2033 |
|
|
* interval should also be less than the timeout.
|
| 2034 |
|
|
*
|
| 2035 |
|
|
* Note: we have to use pretty tight timings here to satisfy
|
| 2036 |
|
|
* the NIST-PCTS.
|
| 2037 |
|
|
*/
|
| 2038 |
|
|
char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size;
|
| 2039 |
|
|
char_time = char_time / 5;
|
| 2040 |
|
|
if (char_time == 0)
|
| 2041 |
|
|
char_time = 1;
|
| 2042 |
|
|
if (timeout && timeout < char_time)
|
| 2043 |
|
|
char_time = timeout;
|
| 2044 |
|
|
/*
|
| 2045 |
|
|
* If the transmitter hasn't cleared in twice the approximate
|
| 2046 |
|
|
* amount of time to send the entire FIFO, it probably won't
|
| 2047 |
|
|
* ever clear. This assumes the UART isn't doing flow
|
| 2048 |
|
|
* control, which is currently the case. Hence, if it ever
|
| 2049 |
|
|
* takes longer than info->timeout, this is probably due to a
|
| 2050 |
|
|
* UART bug of some kind. So, we clamp the timeout parameter at
|
| 2051 |
|
|
* 2*info->timeout.
|
| 2052 |
|
|
*/
|
| 2053 |
|
|
if (!timeout || timeout > 2 * info->timeout)
|
| 2054 |
|
|
timeout = 2 * info->timeout;
|
| 2055 |
|
|
#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
|
| 2056 |
|
|
printk(KERN_DEBUG "In rs_wait_until_sent(%d) check=%lu...",
|
| 2057 |
|
|
timeout, char_time);
|
| 2058 |
|
|
printk("jiff=%lu...", jiffies);
|
| 2059 |
|
|
#endif
|
| 2060 |
|
|
while (!((lsr = inb(info->ioaddr + UART_LSR)) & UART_LSR_TEMT)) {
|
| 2061 |
|
|
#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
|
| 2062 |
|
|
printk("lsr = %d (jiff=%lu)...", lsr, jiffies);
|
| 2063 |
|
|
#endif
|
| 2064 |
|
|
schedule_timeout_interruptible(char_time);
|
| 2065 |
|
|
if (signal_pending(current))
|
| 2066 |
|
|
break;
|
| 2067 |
|
|
if (timeout && time_after(jiffies, orig_jiffies + timeout))
|
| 2068 |
|
|
break;
|
| 2069 |
|
|
}
|
| 2070 |
|
|
set_current_state(TASK_RUNNING);
|
| 2071 |
|
|
|
| 2072 |
|
|
#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
|
| 2073 |
|
|
printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies);
|
| 2074 |
|
|
#endif
|
| 2075 |
|
|
}
|
| 2076 |
|
|
|
| 2077 |
|
|
/*
|
| 2078 |
|
|
* This routine is called by tty_hangup() when a hangup is signaled.
|
| 2079 |
|
|
*/
|
| 2080 |
|
|
static void mxser_hangup(struct tty_struct *tty)
|
| 2081 |
|
|
{
|
| 2082 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 2083 |
|
|
|
| 2084 |
|
|
mxser_flush_buffer(tty);
|
| 2085 |
|
|
mxser_shutdown(info);
|
| 2086 |
|
|
info->event = 0;
|
| 2087 |
|
|
info->count = 0;
|
| 2088 |
|
|
info->flags &= ~ASYNC_NORMAL_ACTIVE;
|
| 2089 |
|
|
info->tty = NULL;
|
| 2090 |
|
|
wake_up_interruptible(&info->open_wait);
|
| 2091 |
|
|
}
|
| 2092 |
|
|
|
| 2093 |
|
|
/*
|
| 2094 |
|
|
* mxser_rs_break() --- routine which turns the break handling on or off
|
| 2095 |
|
|
*/
|
| 2096 |
|
|
static void mxser_rs_break(struct tty_struct *tty, int break_state)
|
| 2097 |
|
|
{
|
| 2098 |
|
|
struct mxser_port *info = tty->driver_data;
|
| 2099 |
|
|
unsigned long flags;
|
| 2100 |
|
|
|
| 2101 |
|
|
spin_lock_irqsave(&info->slock, flags);
|
| 2102 |
|
|
if (break_state == -1)
|
| 2103 |
|
|
outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
|
| 2104 |
|
|
info->ioaddr + UART_LCR);
|
| 2105 |
|
|
else
|
| 2106 |
|
|
outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC,
|
| 2107 |
|
|
info->ioaddr + UART_LCR);
|
| 2108 |
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
| 2109 |
|
|
}
|
| 2110 |
|
|
|
| 2111 |
|
|
static void mxser_receive_chars(struct mxser_port *port, int *status)
|
| 2112 |
|
|
{
|
| 2113 |
|
|
struct tty_struct *tty = port->tty;
|
| 2114 |
|
|
unsigned char ch, gdl;
|
| 2115 |
|
|
int ignored = 0;
|
| 2116 |
|
|
int cnt = 0;
|
| 2117 |
|
|
int recv_room;
|
| 2118 |
|
|
int max = 256;
|
| 2119 |
|
|
|
| 2120 |
|
|
recv_room = tty->receive_room;
|
| 2121 |
|
|
if ((recv_room == 0) && (!port->ldisc_stop_rx))
|
| 2122 |
|
|
mxser_stoprx(tty);
|
| 2123 |
|
|
|
| 2124 |
|
|
if (port->board->chip_flag != MOXA_OTHER_UART) {
|
| 2125 |
|
|
|
| 2126 |
|
|
if (*status & UART_LSR_SPECIAL)
|
| 2127 |
|
|
goto intr_old;
|
| 2128 |
|
|
if (port->board->chip_flag == MOXA_MUST_MU860_HWID &&
|
| 2129 |
|
|
(*status & MOXA_MUST_LSR_RERR))
|
| 2130 |
|
|
goto intr_old;
|
| 2131 |
|
|
if (*status & MOXA_MUST_LSR_RERR)
|
| 2132 |
|
|
goto intr_old;
|
| 2133 |
|
|
|
| 2134 |
|
|
gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER);
|
| 2135 |
|
|
|
| 2136 |
|
|
if (port->board->chip_flag == MOXA_MUST_MU150_HWID)
|
| 2137 |
|
|
gdl &= MOXA_MUST_GDL_MASK;
|
| 2138 |
|
|
if (gdl >= recv_room) {
|
| 2139 |
|
|
if (!port->ldisc_stop_rx)
|
| 2140 |
|
|
mxser_stoprx(tty);
|
| 2141 |
|
|
}
|
| 2142 |
|
|
while (gdl--) {
|
| 2143 |
|
|
ch = inb(port->ioaddr + UART_RX);
|
| 2144 |
|
|
tty_insert_flip_char(tty, ch, 0);
|
| 2145 |
|
|
cnt++;
|
| 2146 |
|
|
}
|
| 2147 |
|
|
goto end_intr;
|
| 2148 |
|
|
}
|
| 2149 |
|
|
intr_old:
|
| 2150 |
|
|
|
| 2151 |
|
|
do {
|
| 2152 |
|
|
if (max-- < 0)
|
| 2153 |
|
|
break;
|
| 2154 |
|
|
|
| 2155 |
|
|
ch = inb(port->ioaddr + UART_RX);
|
| 2156 |
|
|
if (port->board->chip_flag && (*status & UART_LSR_OE))
|
| 2157 |
|
|
outb(0x23, port->ioaddr + UART_FCR);
|
| 2158 |
|
|
*status &= port->read_status_mask;
|
| 2159 |
|
|
if (*status & port->ignore_status_mask) {
|
| 2160 |
|
|
if (++ignored > 100)
|
| 2161 |
|
|
break;
|
| 2162 |
|
|
} else {
|
| 2163 |
|
|
char flag = 0;
|
| 2164 |
|
|
if (*status & UART_LSR_SPECIAL) {
|
| 2165 |
|
|
if (*status & UART_LSR_BI) {
|
| 2166 |
|
|
flag = TTY_BREAK;
|
| 2167 |
|
|
port->icount.brk++;
|
| 2168 |
|
|
|
| 2169 |
|
|
if (port->flags & ASYNC_SAK)
|
| 2170 |
|
|
do_SAK(tty);
|
| 2171 |
|
|
} else if (*status & UART_LSR_PE) {
|
| 2172 |
|
|
flag = TTY_PARITY;
|
| 2173 |
|
|
port->icount.parity++;
|
| 2174 |
|
|
} else if (*status & UART_LSR_FE) {
|
| 2175 |
|
|
flag = TTY_FRAME;
|
| 2176 |
|
|
port->icount.frame++;
|
| 2177 |
|
|
} else if (*status & UART_LSR_OE) {
|
| 2178 |
|
|
flag = TTY_OVERRUN;
|
| 2179 |
|
|
port->icount.overrun++;
|
| 2180 |
|
|
} else
|
| 2181 |
|
|
flag = TTY_BREAK;
|
| 2182 |
|
|
}
|
| 2183 |
|
|
tty_insert_flip_char(tty, ch, flag);
|
| 2184 |
|
|
cnt++;
|
| 2185 |
|
|
if (cnt >= recv_room) {
|
| 2186 |
|
|
if (!port->ldisc_stop_rx)
|
| 2187 |
|
|
mxser_stoprx(tty);
|
| 2188 |
|
|
break;
|
| 2189 |
|
|
}
|
| 2190 |
|
|
|
| 2191 |
|
|
}
|
| 2192 |
|
|
|
| 2193 |
|
|
if (port->board->chip_flag)
|
| 2194 |
|
|
break;
|
| 2195 |
|
|
|
| 2196 |
|
|
*status = inb(port->ioaddr + UART_LSR);
|
| 2197 |
|
|
} while (*status & UART_LSR_DR);
|
| 2198 |
|
|
|
| 2199 |
|
|
end_intr:
|
| 2200 |
|
|
mxvar_log.rxcnt[port->tty->index] += cnt;
|
| 2201 |
|
|
port->mon_data.rxcnt += cnt;
|
| 2202 |
|
|
port->mon_data.up_rxcnt += cnt;
|
| 2203 |
|
|
|
| 2204 |
|
|
/*
|
| 2205 |
|
|
* We are called from an interrupt context with &port->slock
|
| 2206 |
|
|
* being held. Drop it temporarily in order to prevent
|
| 2207 |
|
|
* recursive locking.
|
| 2208 |
|
|
*/
|
| 2209 |
|
|
spin_unlock(&port->slock);
|
| 2210 |
|
|
tty_flip_buffer_push(tty);
|
| 2211 |
|
|
spin_lock(&port->slock);
|
| 2212 |
|
|
}
|
| 2213 |
|
|
|
| 2214 |
|
|
static void mxser_transmit_chars(struct mxser_port *port)
|
| 2215 |
|
|
{
|
| 2216 |
|
|
int count, cnt;
|
| 2217 |
|
|
|
| 2218 |
|
|
if (port->x_char) {
|
| 2219 |
|
|
outb(port->x_char, port->ioaddr + UART_TX);
|
| 2220 |
|
|
port->x_char = 0;
|
| 2221 |
|
|
mxvar_log.txcnt[port->tty->index]++;
|
| 2222 |
|
|
port->mon_data.txcnt++;
|
| 2223 |
|
|
port->mon_data.up_txcnt++;
|
| 2224 |
|
|
port->icount.tx++;
|
| 2225 |
|
|
return;
|
| 2226 |
|
|
}
|
| 2227 |
|
|
|
| 2228 |
|
|
if (port->xmit_buf == 0)
|
| 2229 |
|
|
return;
|
| 2230 |
|
|
|
| 2231 |
|
|
if ((port->xmit_cnt <= 0) || port->tty->stopped ||
|
| 2232 |
|
|
(port->tty->hw_stopped &&
|
| 2233 |
|
|
(port->type != PORT_16550A) &&
|
| 2234 |
|
|
(!port->board->chip_flag))) {
|
| 2235 |
|
|
port->IER &= ~UART_IER_THRI;
|
| 2236 |
|
|
outb(port->IER, port->ioaddr + UART_IER);
|
| 2237 |
|
|
return;
|
| 2238 |
|
|
}
|
| 2239 |
|
|
|
| 2240 |
|
|
cnt = port->xmit_cnt;
|
| 2241 |
|
|
count = port->xmit_fifo_size;
|
| 2242 |
|
|
do {
|
| 2243 |
|
|
outb(port->xmit_buf[port->xmit_tail++],
|
| 2244 |
|
|
port->ioaddr + UART_TX);
|
| 2245 |
|
|
port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE - 1);
|
| 2246 |
|
|
if (--port->xmit_cnt <= 0)
|
| 2247 |
|
|
break;
|
| 2248 |
|
|
} while (--count > 0);
|
| 2249 |
|
|
mxvar_log.txcnt[port->tty->index] += (cnt - port->xmit_cnt);
|
| 2250 |
|
|
|
| 2251 |
|
|
port->mon_data.txcnt += (cnt - port->xmit_cnt);
|
| 2252 |
|
|
port->mon_data.up_txcnt += (cnt - port->xmit_cnt);
|
| 2253 |
|
|
port->icount.tx += (cnt - port->xmit_cnt);
|
| 2254 |
|
|
|
| 2255 |
|
|
if (port->xmit_cnt < WAKEUP_CHARS)
|
| 2256 |
|
|
tty_wakeup(port->tty);
|
| 2257 |
|
|
|
| 2258 |
|
|
if (port->xmit_cnt <= 0) {
|
| 2259 |
|
|
port->IER &= ~UART_IER_THRI;
|
| 2260 |
|
|
outb(port->IER, port->ioaddr + UART_IER);
|
| 2261 |
|
|
}
|
| 2262 |
|
|
}
|
| 2263 |
|
|
|
| 2264 |
|
|
/*
|
| 2265 |
|
|
* This is the serial driver's generic interrupt routine
|
| 2266 |
|
|
*/
|
| 2267 |
|
|
static irqreturn_t mxser_interrupt(int irq, void *dev_id)
|
| 2268 |
|
|
{
|
| 2269 |
|
|
int status, iir, i;
|
| 2270 |
|
|
struct mxser_board *brd = NULL;
|
| 2271 |
|
|
struct mxser_port *port;
|
| 2272 |
|
|
int max, irqbits, bits, msr;
|
| 2273 |
|
|
unsigned int int_cnt, pass_counter = 0;
|
| 2274 |
|
|
int handled = IRQ_NONE;
|
| 2275 |
|
|
|
| 2276 |
|
|
for (i = 0; i < MXSER_BOARDS; i++)
|
| 2277 |
|
|
if (dev_id == &mxser_boards[i]) {
|
| 2278 |
|
|
brd = dev_id;
|
| 2279 |
|
|
break;
|
| 2280 |
|
|
}
|
| 2281 |
|
|
|
| 2282 |
|
|
if (i == MXSER_BOARDS)
|
| 2283 |
|
|
goto irq_stop;
|
| 2284 |
|
|
if (brd == NULL)
|
| 2285 |
|
|
goto irq_stop;
|
| 2286 |
|
|
max = brd->info->nports;
|
| 2287 |
|
|
while (pass_counter++ < MXSER_ISR_PASS_LIMIT) {
|
| 2288 |
|
|
irqbits = inb(brd->vector) & brd->vector_mask;
|
| 2289 |
|
|
if (irqbits == brd->vector_mask)
|
| 2290 |
|
|
break;
|
| 2291 |
|
|
|
| 2292 |
|
|
handled = IRQ_HANDLED;
|
| 2293 |
|
|
for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) {
|
| 2294 |
|
|
if (irqbits == brd->vector_mask)
|
| 2295 |
|
|
break;
|
| 2296 |
|
|
if (bits & irqbits)
|
| 2297 |
|
|
continue;
|
| 2298 |
|
|
port = &brd->ports[i];
|
| 2299 |
|
|
|
| 2300 |
|
|
int_cnt = 0;
|
| 2301 |
|
|
spin_lock(&port->slock);
|
| 2302 |
|
|
do {
|
| 2303 |
|
|
iir = inb(port->ioaddr + UART_IIR);
|
| 2304 |
|
|
if (iir & UART_IIR_NO_INT)
|
| 2305 |
|
|
break;
|
| 2306 |
|
|
iir &= MOXA_MUST_IIR_MASK;
|
| 2307 |
|
|
if (!port->tty ||
|
| 2308 |
|
|
(port->flags & ASYNC_CLOSING) ||
|
| 2309 |
|
|
!(port->flags &
|
| 2310 |
|
|
ASYNC_INITIALIZED)) {
|
| 2311 |
|
|
status = inb(port->ioaddr + UART_LSR);
|
| 2312 |
|
|
outb(0x27, port->ioaddr + UART_FCR);
|
| 2313 |
|
|
inb(port->ioaddr + UART_MSR);
|
| 2314 |
|
|
break;
|
| 2315 |
|
|
}
|
| 2316 |
|
|
|
| 2317 |
|
|
status = inb(port->ioaddr + UART_LSR);
|
| 2318 |
|
|
|
| 2319 |
|
|
if (status & UART_LSR_PE)
|
| 2320 |
|
|
port->err_shadow |= NPPI_NOTIFY_PARITY;
|
| 2321 |
|
|
if (status & UART_LSR_FE)
|
| 2322 |
|
|
port->err_shadow |= NPPI_NOTIFY_FRAMING;
|
| 2323 |
|
|
if (status & UART_LSR_OE)
|
| 2324 |
|
|
port->err_shadow |=
|
| 2325 |
|
|
NPPI_NOTIFY_HW_OVERRUN;
|
| 2326 |
|
|
if (status & UART_LSR_BI)
|
| 2327 |
|
|
port->err_shadow |= NPPI_NOTIFY_BREAK;
|
| 2328 |
|
|
|
| 2329 |
|
|
if (port->board->chip_flag) {
|
| 2330 |
|
|
if (iir == MOXA_MUST_IIR_GDA ||
|
| 2331 |
|
|
iir == MOXA_MUST_IIR_RDA ||
|
| 2332 |
|
|
iir == MOXA_MUST_IIR_RTO ||
|
| 2333 |
|
|
iir == MOXA_MUST_IIR_LSR)
|
| 2334 |
|
|
mxser_receive_chars(port,
|
| 2335 |
|
|
&status);
|
| 2336 |
|
|
|
| 2337 |
|
|
} else {
|
| 2338 |
|
|
status &= port->read_status_mask;
|
| 2339 |
|
|
if (status & UART_LSR_DR)
|
| 2340 |
|
|
mxser_receive_chars(port,
|
| 2341 |
|
|
&status);
|
| 2342 |
|
|
}
|
| 2343 |
|
|
msr = inb(port->ioaddr + UART_MSR);
|
| 2344 |
|
|
if (msr & UART_MSR_ANY_DELTA)
|
| 2345 |
|
|
mxser_check_modem_status(port, msr);
|
| 2346 |
|
|
|
| 2347 |
|
|
if (port->board->chip_flag) {
|
| 2348 |
|
|
if (iir == 0x02 && (status &
|
| 2349 |
|
|
UART_LSR_THRE))
|
| 2350 |
|
|
mxser_transmit_chars(port);
|
| 2351 |
|
|
} else {
|
| 2352 |
|
|
if (status & UART_LSR_THRE)
|
| 2353 |
|
|
mxser_transmit_chars(port);
|
| 2354 |
|
|
}
|
| 2355 |
|
|
} while (int_cnt++ < MXSER_ISR_PASS_LIMIT);
|
| 2356 |
|
|
spin_unlock(&port->slock);
|
| 2357 |
|
|
}
|
| 2358 |
|
|
}
|
| 2359 |
|
|
|
| 2360 |
|
|
irq_stop:
|
| 2361 |
|
|
return handled;
|
| 2362 |
|
|
}
|
| 2363 |
|
|
|
| 2364 |
|
|
static const struct tty_operations mxser_ops = {
|
| 2365 |
|
|
.open = mxser_open,
|
| 2366 |
|
|
.close = mxser_close,
|
| 2367 |
|
|
.write = mxser_write,
|
| 2368 |
|
|
.put_char = mxser_put_char,
|
| 2369 |
|
|
.flush_chars = mxser_flush_chars,
|
| 2370 |
|
|
.write_room = mxser_write_room,
|
| 2371 |
|
|
.chars_in_buffer = mxser_chars_in_buffer,
|
| 2372 |
|
|
.flush_buffer = mxser_flush_buffer,
|
| 2373 |
|
|
.ioctl = mxser_ioctl,
|
| 2374 |
|
|
.throttle = mxser_throttle,
|
| 2375 |
|
|
.unthrottle = mxser_unthrottle,
|
| 2376 |
|
|
.set_termios = mxser_set_termios,
|
| 2377 |
|
|
.stop = mxser_stop,
|
| 2378 |
|
|
.start = mxser_start,
|
| 2379 |
|
|
.hangup = mxser_hangup,
|
| 2380 |
|
|
.break_ctl = mxser_rs_break,
|
| 2381 |
|
|
.wait_until_sent = mxser_wait_until_sent,
|
| 2382 |
|
|
.tiocmget = mxser_tiocmget,
|
| 2383 |
|
|
.tiocmset = mxser_tiocmset,
|
| 2384 |
|
|
};
|
| 2385 |
|
|
|
| 2386 |
|
|
/*
|
| 2387 |
|
|
* The MOXA Smartio/Industio serial driver boot-time initialization code!
|
| 2388 |
|
|
*/
|
| 2389 |
|
|
|
| 2390 |
|
|
static void mxser_release_res(struct mxser_board *brd, struct pci_dev *pdev,
|
| 2391 |
|
|
unsigned int irq)
|
| 2392 |
|
|
{
|
| 2393 |
|
|
if (irq)
|
| 2394 |
|
|
free_irq(brd->irq, brd);
|
| 2395 |
|
|
if (pdev != NULL) { /* PCI */
|
| 2396 |
|
|
#ifdef CONFIG_PCI
|
| 2397 |
|
|
pci_release_region(pdev, 2);
|
| 2398 |
|
|
pci_release_region(pdev, 3);
|
| 2399 |
|
|
#endif
|
| 2400 |
|
|
} else {
|
| 2401 |
|
|
release_region(brd->ports[0].ioaddr, 8 * brd->info->nports);
|
| 2402 |
|
|
release_region(brd->vector, 1);
|
| 2403 |
|
|
}
|
| 2404 |
|
|
}
|
| 2405 |
|
|
|
| 2406 |
|
|
static int __devinit mxser_initbrd(struct mxser_board *brd,
|
| 2407 |
|
|
struct pci_dev *pdev)
|
| 2408 |
|
|
{
|
| 2409 |
|
|
struct mxser_port *info;
|
| 2410 |
|
|
unsigned int i;
|
| 2411 |
|
|
int retval;
|
| 2412 |
|
|
|
| 2413 |
|
|
printk(KERN_INFO "max. baud rate = %d bps.\n", brd->ports[0].max_baud);
|
| 2414 |
|
|
|
| 2415 |
|
|
for (i = 0; i < brd->info->nports; i++) {
|
| 2416 |
|
|
info = &brd->ports[i];
|
| 2417 |
|
|
info->board = brd;
|
| 2418 |
|
|
info->stop_rx = 0;
|
| 2419 |
|
|
info->ldisc_stop_rx = 0;
|
| 2420 |
|
|
|
| 2421 |
|
|
/* Enhance mode enabled here */
|
| 2422 |
|
|
if (brd->chip_flag != MOXA_OTHER_UART)
|
| 2423 |
|
|
ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr);
|
| 2424 |
|
|
|
| 2425 |
|
|
info->flags = ASYNC_SHARE_IRQ;
|
| 2426 |
|
|
info->type = brd->uart_type;
|
| 2427 |
|
|
|
| 2428 |
|
|
process_txrx_fifo(info);
|
| 2429 |
|
|
|
| 2430 |
|
|
info->custom_divisor = info->baud_base * 16;
|
| 2431 |
|
|
info->close_delay = 5 * HZ / 10;
|
| 2432 |
|
|
info->closing_wait = 30 * HZ;
|
| 2433 |
|
|
info->normal_termios = mxvar_sdriver->init_termios;
|
| 2434 |
|
|
init_waitqueue_head(&info->open_wait);
|
| 2435 |
|
|
init_waitqueue_head(&info->delta_msr_wait);
|
| 2436 |
|
|
info->speed = 9600;
|
| 2437 |
|
|
memset(&info->mon_data, 0, sizeof(struct mxser_mon));
|
| 2438 |
|
|
info->err_shadow = 0;
|
| 2439 |
|
|
spin_lock_init(&info->slock);
|
| 2440 |
|
|
|
| 2441 |
|
|
/* before set INT ISR, disable all int */
|
| 2442 |
|
|
outb(inb(info->ioaddr + UART_IER) & 0xf0,
|
| 2443 |
|
|
info->ioaddr + UART_IER);
|
| 2444 |
|
|
}
|
| 2445 |
|
|
|
| 2446 |
|
|
retval = request_irq(brd->irq, mxser_interrupt, IRQF_SHARED, "mxser",
|
| 2447 |
|
|
brd);
|
| 2448 |
|
|
if (retval) {
|
| 2449 |
|
|
printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may "
|
| 2450 |
|
|
"conflict with another device.\n",
|
| 2451 |
|
|
brd->info->name, brd->irq);
|
| 2452 |
|
|
/* We hold resources, we need to release them. */
|
| 2453 |
|
|
mxser_release_res(brd, pdev, 0);
|
| 2454 |
|
|
}
|
| 2455 |
|
|
return retval;
|
| 2456 |
|
|
}
|
| 2457 |
|
|
|
| 2458 |
|
|
static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd)
|
| 2459 |
|
|
{
|
| 2460 |
|
|
int id, i, bits;
|
| 2461 |
|
|
unsigned short regs[16], irq;
|
| 2462 |
|
|
unsigned char scratch, scratch2;
|
| 2463 |
|
|
|
| 2464 |
|
|
brd->chip_flag = MOXA_OTHER_UART;
|
| 2465 |
|
|
|
| 2466 |
|
|
id = mxser_read_register(cap, regs);
|
| 2467 |
|
|
switch (id) {
|
| 2468 |
|
|
case C168_ASIC_ID:
|
| 2469 |
|
|
brd->info = &mxser_cards[0];
|
| 2470 |
|
|
break;
|
| 2471 |
|
|
case C104_ASIC_ID:
|
| 2472 |
|
|
brd->info = &mxser_cards[1];
|
| 2473 |
|
|
break;
|
| 2474 |
|
|
case CI104J_ASIC_ID:
|
| 2475 |
|
|
brd->info = &mxser_cards[2];
|
| 2476 |
|
|
break;
|
| 2477 |
|
|
case C102_ASIC_ID:
|
| 2478 |
|
|
brd->info = &mxser_cards[5];
|
| 2479 |
|
|
break;
|
| 2480 |
|
|
case CI132_ASIC_ID:
|
| 2481 |
|
|
brd->info = &mxser_cards[6];
|
| 2482 |
|
|
break;
|
| 2483 |
|
|
case CI134_ASIC_ID:
|
| 2484 |
|
|
brd->info = &mxser_cards[7];
|
| 2485 |
|
|
break;
|
| 2486 |
|
|
default:
|
| 2487 |
|
|
return 0;
|
| 2488 |
|
|
}
|
| 2489 |
|
|
|
| 2490 |
|
|
irq = 0;
|
| 2491 |
|
|
/* some ISA cards have 2 ports, but we want to see them as 4-port (why?)
|
| 2492 |
|
|
Flag-hack checks if configuration should be read as 2-port here. */
|
| 2493 |
|
|
if (brd->info->nports == 2 || (brd->info->flags & MXSER_HAS2)) {
|
| 2494 |
|
|
irq = regs[9] & 0xF000;
|
| 2495 |
|
|
irq = irq | (irq >> 4);
|
| 2496 |
|
|
if (irq != (regs[9] & 0xFF00))
|
| 2497 |
|
|
return MXSER_ERR_IRQ_CONFLIT;
|
| 2498 |
|
|
} else if (brd->info->nports == 4) {
|
| 2499 |
|
|
irq = regs[9] & 0xF000;
|
| 2500 |
|
|
irq = irq | (irq >> 4);
|
| 2501 |
|
|
irq = irq | (irq >> 8);
|
| 2502 |
|
|
if (irq != regs[9])
|
| 2503 |
|
|
return MXSER_ERR_IRQ_CONFLIT;
|
| 2504 |
|
|
} else if (brd->info->nports == 8) {
|
| 2505 |
|
|
irq = regs[9] & 0xF000;
|
| 2506 |
|
|
irq = irq | (irq >> 4);
|
| 2507 |
|
|
irq = irq | (irq >> 8);
|
| 2508 |
|
|
if ((irq != regs[9]) || (irq != regs[10]))
|
| 2509 |
|
|
return MXSER_ERR_IRQ_CONFLIT;
|
| 2510 |
|
|
}
|
| 2511 |
|
|
|
| 2512 |
|
|
if (!irq)
|
| 2513 |
|
|
return MXSER_ERR_IRQ;
|
| 2514 |
|
|
brd->irq = ((int)(irq & 0xF000) >> 12);
|
| 2515 |
|
|
for (i = 0; i < 8; i++)
|
| 2516 |
|
|
brd->ports[i].ioaddr = (int) regs[i + 1] & 0xFFF8;
|
| 2517 |
|
|
if ((regs[12] & 0x80) == 0)
|
| 2518 |
|
|
return MXSER_ERR_VECTOR;
|
| 2519 |
|
|
brd->vector = (int)regs[11]; /* interrupt vector */
|
| 2520 |
|
|
if (id == 1)
|
| 2521 |
|
|
brd->vector_mask = 0x00FF;
|
| 2522 |
|
|
else
|
| 2523 |
|
|
brd->vector_mask = 0x000F;
|
| 2524 |
|
|
for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) {
|
| 2525 |
|
|
if (regs[12] & bits) {
|
| 2526 |
|
|
brd->ports[i].baud_base = 921600;
|
| 2527 |
|
|
brd->ports[i].max_baud = 921600;
|
| 2528 |
|
|
} else {
|
| 2529 |
|
|
brd->ports[i].baud_base = 115200;
|
| 2530 |
|
|
brd->ports[i].max_baud = 115200;
|
| 2531 |
|
|
}
|
| 2532 |
|
|
}
|
| 2533 |
|
|
scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB);
|
| 2534 |
|
|
outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR);
|
| 2535 |
|
|
outb(0, cap + UART_EFR); /* EFR is the same as FCR */
|
| 2536 |
|
|
outb(scratch2, cap + UART_LCR);
|
| 2537 |
|
|
outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR);
|
| 2538 |
|
|
scratch = inb(cap + UART_IIR);
|
| 2539 |
|
|
|
| 2540 |
|
|
if (scratch & 0xC0)
|
| 2541 |
|
|
brd->uart_type = PORT_16550A;
|
| 2542 |
|
|
else
|
| 2543 |
|
|
brd->uart_type = PORT_16450;
|
| 2544 |
|
|
if (!request_region(brd->ports[0].ioaddr, 8 * brd->info->nports,
|
| 2545 |
|
|
"mxser(IO)"))
|
| 2546 |
|
|
return MXSER_ERR_IOADDR;
|
| 2547 |
|
|
if (!request_region(brd->vector, 1, "mxser(vector)")) {
|
| 2548 |
|
|
release_region(brd->ports[0].ioaddr, 8 * brd->info->nports);
|
| 2549 |
|
|
return MXSER_ERR_VECTOR;
|
| 2550 |
|
|
}
|
| 2551 |
|
|
return brd->info->nports;
|
| 2552 |
|
|
}
|
| 2553 |
|
|
|
| 2554 |
|
|
static int __devinit mxser_probe(struct pci_dev *pdev,
|
| 2555 |
|
|
const struct pci_device_id *ent)
|
| 2556 |
|
|
{
|
| 2557 |
|
|
#ifdef CONFIG_PCI
|
| 2558 |
|
|
struct mxser_board *brd;
|
| 2559 |
|
|
unsigned int i, j;
|
| 2560 |
|
|
unsigned long ioaddress;
|
| 2561 |
|
|
int retval = -EINVAL;
|
| 2562 |
|
|
|
| 2563 |
|
|
for (i = 0; i < MXSER_BOARDS; i++)
|
| 2564 |
|
|
if (mxser_boards[i].info == NULL)
|
| 2565 |
|
|
break;
|
| 2566 |
|
|
|
| 2567 |
|
|
if (i >= MXSER_BOARDS) {
|
| 2568 |
|
|
printk(KERN_ERR "Too many Smartio/Industio family boards found "
|
| 2569 |
|
|
"(maximum %d), board not configured\n", MXSER_BOARDS);
|
| 2570 |
|
|
goto err;
|
| 2571 |
|
|
}
|
| 2572 |
|
|
|
| 2573 |
|
|
brd = &mxser_boards[i];
|
| 2574 |
|
|
brd->idx = i * MXSER_PORTS_PER_BOARD;
|
| 2575 |
|
|
printk(KERN_INFO "Found MOXA %s board (BusNo=%d, DevNo=%d)\n",
|
| 2576 |
|
|
mxser_cards[ent->driver_data].name,
|
| 2577 |
|
|
pdev->bus->number, PCI_SLOT(pdev->devfn));
|
| 2578 |
|
|
|
| 2579 |
|
|
retval = pci_enable_device(pdev);
|
| 2580 |
|
|
if (retval) {
|
| 2581 |
|
|
printk(KERN_ERR "Moxa SmartI/O PCI enable fail !\n");
|
| 2582 |
|
|
goto err;
|
| 2583 |
|
|
}
|
| 2584 |
|
|
|
| 2585 |
|
|
/* io address */
|
| 2586 |
|
|
ioaddress = pci_resource_start(pdev, 2);
|
| 2587 |
|
|
retval = pci_request_region(pdev, 2, "mxser(IO)");
|
| 2588 |
|
|
if (retval)
|
| 2589 |
|
|
goto err;
|
| 2590 |
|
|
|
| 2591 |
|
|
brd->info = &mxser_cards[ent->driver_data];
|
| 2592 |
|
|
for (i = 0; i < brd->info->nports; i++)
|
| 2593 |
|
|
brd->ports[i].ioaddr = ioaddress + 8 * i;
|
| 2594 |
|
|
|
| 2595 |
|
|
/* vector */
|
| 2596 |
|
|
ioaddress = pci_resource_start(pdev, 3);
|
| 2597 |
|
|
retval = pci_request_region(pdev, 3, "mxser(vector)");
|
| 2598 |
|
|
if (retval)
|
| 2599 |
|
|
goto err_relio;
|
| 2600 |
|
|
brd->vector = ioaddress;
|
| 2601 |
|
|
|
| 2602 |
|
|
/* irq */
|
| 2603 |
|
|
brd->irq = pdev->irq;
|
| 2604 |
|
|
|
| 2605 |
|
|
brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr);
|
| 2606 |
|
|
brd->uart_type = PORT_16550A;
|
| 2607 |
|
|
brd->vector_mask = 0;
|
| 2608 |
|
|
|
| 2609 |
|
|
for (i = 0; i < brd->info->nports; i++) {
|
| 2610 |
|
|
for (j = 0; j < UART_INFO_NUM; j++) {
|
| 2611 |
|
|
if (Gpci_uart_info[j].type == brd->chip_flag) {
|
| 2612 |
|
|
brd->ports[i].max_baud =
|
| 2613 |
|
|
Gpci_uart_info[j].max_baud;
|
| 2614 |
|
|
|
| 2615 |
|
|
/* exception....CP-102 */
|
| 2616 |
|
|
if (brd->info->flags & MXSER_HIGHBAUD)
|
| 2617 |
|
|
brd->ports[i].max_baud = 921600;
|
| 2618 |
|
|
break;
|
| 2619 |
|
|
}
|
| 2620 |
|
|
}
|
| 2621 |
|
|
}
|
| 2622 |
|
|
|
| 2623 |
|
|
if (brd->chip_flag == MOXA_MUST_MU860_HWID) {
|
| 2624 |
|
|
for (i = 0; i < brd->info->nports; i++) {
|
| 2625 |
|
|
if (i < 4)
|
| 2626 |
|
|
brd->ports[i].opmode_ioaddr = ioaddress + 4;
|
| 2627 |
|
|
else
|
| 2628 |
|
|
brd->ports[i].opmode_ioaddr = ioaddress + 0x0c;
|
| 2629 |
|
|
}
|
| 2630 |
|
|
outb(0, ioaddress + 4); /* default set to RS232 mode */
|
| 2631 |
|
|
outb(0, ioaddress + 0x0c); /* default set to RS232 mode */
|
| 2632 |
|
|
}
|
| 2633 |
|
|
|
| 2634 |
|
|
for (i = 0; i < brd->info->nports; i++) {
|
| 2635 |
|
|
brd->vector_mask |= (1 << i);
|
| 2636 |
|
|
brd->ports[i].baud_base = 921600;
|
| 2637 |
|
|
}
|
| 2638 |
|
|
|
| 2639 |
|
|
/* mxser_initbrd will hook ISR. */
|
| 2640 |
|
|
retval = mxser_initbrd(brd, pdev);
|
| 2641 |
|
|
if (retval)
|
| 2642 |
|
|
goto err_null;
|
| 2643 |
|
|
|
| 2644 |
|
|
for (i = 0; i < brd->info->nports; i++)
|
| 2645 |
|
|
tty_register_device(mxvar_sdriver, brd->idx + i, &pdev->dev);
|
| 2646 |
|
|
|
| 2647 |
|
|
pci_set_drvdata(pdev, brd);
|
| 2648 |
|
|
|
| 2649 |
|
|
return 0;
|
| 2650 |
|
|
err_relio:
|
| 2651 |
|
|
pci_release_region(pdev, 2);
|
| 2652 |
|
|
err_null:
|
| 2653 |
|
|
brd->info = NULL;
|
| 2654 |
|
|
err:
|
| 2655 |
|
|
return retval;
|
| 2656 |
|
|
#else
|
| 2657 |
|
|
return -ENODEV;
|
| 2658 |
|
|
#endif
|
| 2659 |
|
|
}
|
| 2660 |
|
|
|
| 2661 |
|
|
static void __devexit mxser_remove(struct pci_dev *pdev)
|
| 2662 |
|
|
{
|
| 2663 |
|
|
struct mxser_board *brd = pci_get_drvdata(pdev);
|
| 2664 |
|
|
unsigned int i;
|
| 2665 |
|
|
|
| 2666 |
|
|
for (i = 0; i < brd->info->nports; i++)
|
| 2667 |
|
|
tty_unregister_device(mxvar_sdriver, brd->idx + i);
|
| 2668 |
|
|
|
| 2669 |
|
|
mxser_release_res(brd, pdev, 1);
|
| 2670 |
|
|
brd->info = NULL;
|
| 2671 |
|
|
}
|
| 2672 |
|
|
|
| 2673 |
|
|
static struct pci_driver mxser_driver = {
|
| 2674 |
|
|
.name = "mxser",
|
| 2675 |
|
|
.id_table = mxser_pcibrds,
|
| 2676 |
|
|
.probe = mxser_probe,
|
| 2677 |
|
|
.remove = __devexit_p(mxser_remove)
|
| 2678 |
|
|
};
|
| 2679 |
|
|
|
| 2680 |
|
|
static int __init mxser_module_init(void)
|
| 2681 |
|
|
{
|
| 2682 |
|
|
struct mxser_board *brd;
|
| 2683 |
|
|
unsigned long cap;
|
| 2684 |
|
|
unsigned int i, m, isaloop;
|
| 2685 |
|
|
int retval, b;
|
| 2686 |
|
|
|
| 2687 |
|
|
pr_debug("Loading module mxser ...\n");
|
| 2688 |
|
|
|
| 2689 |
|
|
mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1);
|
| 2690 |
|
|
if (!mxvar_sdriver)
|
| 2691 |
|
|
return -ENOMEM;
|
| 2692 |
|
|
|
| 2693 |
|
|
printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n",
|
| 2694 |
|
|
MXSER_VERSION);
|
| 2695 |
|
|
|
| 2696 |
|
|
/* Initialize the tty_driver structure */
|
| 2697 |
|
|
mxvar_sdriver->owner = THIS_MODULE;
|
| 2698 |
|
|
mxvar_sdriver->magic = TTY_DRIVER_MAGIC;
|
| 2699 |
|
|
mxvar_sdriver->name = "ttyMI";
|
| 2700 |
|
|
mxvar_sdriver->major = ttymajor;
|
| 2701 |
|
|
mxvar_sdriver->minor_start = 0;
|
| 2702 |
|
|
mxvar_sdriver->num = MXSER_PORTS + 1;
|
| 2703 |
|
|
mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL;
|
| 2704 |
|
|
mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL;
|
| 2705 |
|
|
mxvar_sdriver->init_termios = tty_std_termios;
|
| 2706 |
|
|
mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
|
| 2707 |
|
|
mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW|TTY_DRIVER_DYNAMIC_DEV;
|
| 2708 |
|
|
tty_set_operations(mxvar_sdriver, &mxser_ops);
|
| 2709 |
|
|
|
| 2710 |
|
|
retval = tty_register_driver(mxvar_sdriver);
|
| 2711 |
|
|
if (retval) {
|
| 2712 |
|
|
printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family "
|
| 2713 |
|
|
"tty driver !\n");
|
| 2714 |
|
|
goto err_put;
|
| 2715 |
|
|
}
|
| 2716 |
|
|
|
| 2717 |
|
|
mxvar_diagflag = 0;
|
| 2718 |
|
|
|
| 2719 |
|
|
m = 0;
|
| 2720 |
|
|
/* Start finding ISA boards here */
|
| 2721 |
|
|
for (isaloop = 0; isaloop < 2; isaloop++)
|
| 2722 |
|
|
for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
|
| 2723 |
|
|
if (!isaloop)
|
| 2724 |
|
|
cap = mxserBoardCAP[b]; /* predefined */
|
| 2725 |
|
|
else
|
| 2726 |
|
|
cap = ioaddr[b]; /* module param */
|
| 2727 |
|
|
|
| 2728 |
|
|
if (!cap)
|
| 2729 |
|
|
continue;
|
| 2730 |
|
|
|
| 2731 |
|
|
brd = &mxser_boards[m];
|
| 2732 |
|
|
retval = mxser_get_ISA_conf(cap, brd);
|
| 2733 |
|
|
|
| 2734 |
|
|
if (retval != 0)
|
| 2735 |
|
|
printk(KERN_INFO "Found MOXA %s board "
|
| 2736 |
|
|
"(CAP=0x%x)\n",
|
| 2737 |
|
|
brd->info->name, ioaddr[b]);
|
| 2738 |
|
|
|
| 2739 |
|
|
if (retval <= 0) {
|
| 2740 |
|
|
if (retval == MXSER_ERR_IRQ)
|
| 2741 |
|
|
printk(KERN_ERR "Invalid interrupt "
|
| 2742 |
|
|
"number, board not "
|
| 2743 |
|
|
"configured\n");
|
| 2744 |
|
|
else if (retval == MXSER_ERR_IRQ_CONFLIT)
|
| 2745 |
|
|
printk(KERN_ERR "Invalid interrupt "
|
| 2746 |
|
|
"number, board not "
|
| 2747 |
|
|
"configured\n");
|
| 2748 |
|
|
else if (retval == MXSER_ERR_VECTOR)
|
| 2749 |
|
|
printk(KERN_ERR "Invalid interrupt "
|
| 2750 |
|
|
"vector, board not "
|
| 2751 |
|
|
"configured\n");
|
| 2752 |
|
|
else if (retval == MXSER_ERR_IOADDR)
|
| 2753 |
|
|
printk(KERN_ERR "Invalid I/O address, "
|
| 2754 |
|
|
"board not configured\n");
|
| 2755 |
|
|
|
| 2756 |
|
|
brd->info = NULL;
|
| 2757 |
|
|
continue;
|
| 2758 |
|
|
}
|
| 2759 |
|
|
|
| 2760 |
|
|
/* mxser_initbrd will hook ISR. */
|
| 2761 |
|
|
if (mxser_initbrd(brd, NULL) < 0) {
|
| 2762 |
|
|
brd->info = NULL;
|
| 2763 |
|
|
continue;
|
| 2764 |
|
|
}
|
| 2765 |
|
|
|
| 2766 |
|
|
brd->idx = m * MXSER_PORTS_PER_BOARD;
|
| 2767 |
|
|
for (i = 0; i < brd->info->nports; i++)
|
| 2768 |
|
|
tty_register_device(mxvar_sdriver, brd->idx + i,
|
| 2769 |
|
|
NULL);
|
| 2770 |
|
|
|
| 2771 |
|
|
m++;
|
| 2772 |
|
|
}
|
| 2773 |
|
|
|
| 2774 |
|
|
retval = pci_register_driver(&mxser_driver);
|
| 2775 |
|
|
if (retval) {
|
| 2776 |
|
|
printk(KERN_ERR "Can't register pci driver\n");
|
| 2777 |
|
|
if (!m) {
|
| 2778 |
|
|
retval = -ENODEV;
|
| 2779 |
|
|
goto err_unr;
|
| 2780 |
|
|
} /* else: we have some ISA cards under control */
|
| 2781 |
|
|
}
|
| 2782 |
|
|
|
| 2783 |
|
|
pr_debug("Done.\n");
|
| 2784 |
|
|
|
| 2785 |
|
|
return 0;
|
| 2786 |
|
|
err_unr:
|
| 2787 |
|
|
tty_unregister_driver(mxvar_sdriver);
|
| 2788 |
|
|
err_put:
|
| 2789 |
|
|
put_tty_driver(mxvar_sdriver);
|
| 2790 |
|
|
return retval;
|
| 2791 |
|
|
}
|
| 2792 |
|
|
|
| 2793 |
|
|
static void __exit mxser_module_exit(void)
|
| 2794 |
|
|
{
|
| 2795 |
|
|
unsigned int i, j;
|
| 2796 |
|
|
|
| 2797 |
|
|
pr_debug("Unloading module mxser ...\n");
|
| 2798 |
|
|
|
| 2799 |
|
|
pci_unregister_driver(&mxser_driver);
|
| 2800 |
|
|
|
| 2801 |
|
|
for (i = 0; i < MXSER_BOARDS; i++) /* ISA remains */
|
| 2802 |
|
|
if (mxser_boards[i].info != NULL)
|
| 2803 |
|
|
for (j = 0; j < mxser_boards[i].info->nports; j++)
|
| 2804 |
|
|
tty_unregister_device(mxvar_sdriver,
|
| 2805 |
|
|
mxser_boards[i].idx + j);
|
| 2806 |
|
|
tty_unregister_driver(mxvar_sdriver);
|
| 2807 |
|
|
put_tty_driver(mxvar_sdriver);
|
| 2808 |
|
|
|
| 2809 |
|
|
for (i = 0; i < MXSER_BOARDS; i++)
|
| 2810 |
|
|
if (mxser_boards[i].info != NULL)
|
| 2811 |
|
|
mxser_release_res(&mxser_boards[i], NULL, 1);
|
| 2812 |
|
|
|
| 2813 |
|
|
pr_debug("Done.\n");
|
| 2814 |
|
|
}
|
| 2815 |
|
|
|
| 2816 |
|
|
module_init(mxser_module_init);
|
| 2817 |
|
|
module_exit(mxser_module_exit);
|
