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mxser.c
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/*
* mxser.c -- MOXA Smartio/Industio family multiport serial driver.
*
* Copyright (C) 1999-2001 Moxa Technologies (support@moxa.com.tw).
*
* This code is loosely based on the Linux serial driver, written by
* Linus Torvalds, Theodore T'so and others.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Original release 10/26/00
*
* 02/06/01 Support MOXA Industio family boards.
* 02/06/01 Support TIOCGICOUNT.
* 02/06/01 Fix the problem for connecting to serial mouse.
* 02/06/01 Fix the problem for H/W flow control.
* 02/06/01 Fix the compling warning when CONFIG_PCI
* don't be defined.
*
* Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox
* <alan@redhat.com>. The original 1.8 code is available on www.moxa.com.
* - Fixed x86_64 cleanness
* - Fixed sleep with spinlock held in mxser_send_break
*/
#include <linux/module.h>
#include <linux/autoconf.h>
#include <linux/errno.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/serial.h>
#include <linux/serial_reg.h>
#include <linux/major.h>
#include <linux/string.h>
#include <linux/fcntl.h>
#include <linux/ptrace.h>
#include <linux/gfp.h>
#include <linux/ioport.h>
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/bitops.h>
#include <asm/uaccess.h>
#include "mxser.h"
#define MXSER_VERSION "1.8"
#define MXSERMAJOR 174
#define MXSERCUMAJOR 175
#define MXSER_EVENT_TXLOW 1
#define MXSER_EVENT_HANGUP 2
#define MXSER_BOARDS 4 /* Max. boards */
#define MXSER_PORTS 32 /* Max. ports */
#define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */
#define MXSER_ISR_PASS_LIMIT 256
#define MXSER_ERR_IOADDR -1
#define MXSER_ERR_IRQ -2
#define MXSER_ERR_IRQ_CONFLIT -3
#define MXSER_ERR_VECTOR -4
#define SERIAL_TYPE_NORMAL 1
#define SERIAL_TYPE_CALLOUT 2
#define WAKEUP_CHARS 256
#define UART_MCR_AFE 0x20
#define UART_LSR_SPECIAL 0x1E
#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK|\
IXON|IXOFF))
#define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED : IRQF_DISABLED)
#define C168_ASIC_ID 1
#define C104_ASIC_ID 2
#define C102_ASIC_ID 0xB
#define CI132_ASIC_ID 4
#define CI134_ASIC_ID 3
#define CI104J_ASIC_ID 5
enum {
MXSER_BOARD_C168_ISA = 1,
MXSER_BOARD_C104_ISA,
MXSER_BOARD_CI104J,
MXSER_BOARD_C168_PCI,
MXSER_BOARD_C104_PCI,
MXSER_BOARD_C102_ISA,
MXSER_BOARD_CI132,
MXSER_BOARD_CI134,
MXSER_BOARD_CP132,
MXSER_BOARD_CP114,
MXSER_BOARD_CT114,
MXSER_BOARD_CP102,
MXSER_BOARD_CP104U,
MXSER_BOARD_CP168U,
MXSER_BOARD_CP132U,
MXSER_BOARD_CP134U,
MXSER_BOARD_CP104JU,
MXSER_BOARD_RC7000,
MXSER_BOARD_CP118U,
MXSER_BOARD_CP102UL,
MXSER_BOARD_CP102U,
};
static char *mxser_brdname[] = {
"C168 series",
"C104 series",
"CI-104J series",
"C168H/PCI series",
"C104H/PCI series",
"C102 series",
"CI-132 series",
"CI-134 series",
"CP-132 series",
"CP-114 series",
"CT-114 series",
"CP-102 series",
"CP-104U series",
"CP-168U series",
"CP-132U series",
"CP-134U series",
"CP-104JU series",
"Moxa UC7000 Serial",
"CP-118U series",
"CP-102UL series",
"CP-102U series",
};
static int mxser_numports[] = {
8, /* C168-ISA */
4, /* C104-ISA */
4, /* CI104J */
8, /* C168-PCI */
4, /* C104-PCI */
2, /* C102-ISA */
2, /* CI132 */
4, /* CI134 */
2, /* CP132 */
4, /* CP114 */
4, /* CT114 */
2, /* CP102 */
4, /* CP104U */
8, /* CP168U */
2, /* CP132U */
4, /* CP134U */
4, /* CP104JU */
8, /* RC7000 */
8, /* CP118U */
2, /* CP102UL */
2, /* CP102U */
};
#define UART_TYPE_NUM 2
static const unsigned int Gmoxa_uart_id[UART_TYPE_NUM] = {
MOXA_MUST_MU150_HWID,
MOXA_MUST_MU860_HWID
};
/* This is only for PCI */
#define UART_INFO_NUM 3
struct mxpciuart_info {
int type;
int tx_fifo;
int rx_fifo;
int xmit_fifo_size;
int rx_high_water;
int rx_trigger;
int rx_low_water;
long max_baud;
};
static const struct mxpciuart_info Gpci_uart_info[UART_INFO_NUM] = {
{MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L},
{MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L},
{MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L}
};
#ifdef CONFIG_PCI
static struct pci_device_id mxser_pcibrds[] = {
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C168_PCI},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C104, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C104_PCI},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP114},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CT114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CT114},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104U},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP168U},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132U},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP134U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP134U},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104JU, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104JU},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_RC7000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_RC7000},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP118U},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102UL, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102UL},
{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102U},
{0}
};
MODULE_DEVICE_TABLE(pci, mxser_pcibrds);
#endif
typedef struct _moxa_pci_info {
unsigned short busNum;
unsigned short devNum;
struct pci_dev *pdev; /* add by Victor Yu. 06-23-2003 */
} moxa_pci_info;
static int ioaddr[MXSER_BOARDS] = { 0, 0, 0, 0 };
static int ttymajor = MXSERMAJOR;
static int calloutmajor = MXSERCUMAJOR;
static int verbose = 0;
/* Variables for insmod */
MODULE_AUTHOR("Casper Yang");
MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver");
module_param_array(ioaddr, int, NULL, 0);
module_param(ttymajor, int, 0);
module_param(calloutmajor, int, 0);
module_param(verbose, bool, 0);
MODULE_LICENSE("GPL");
struct mxser_log {
int tick;
unsigned long rxcnt[MXSER_PORTS];
unsigned long txcnt[MXSER_PORTS];
};
struct mxser_mon {
unsigned long rxcnt;
unsigned long txcnt;
unsigned long up_rxcnt;
unsigned long up_txcnt;
int modem_status;
unsigned char hold_reason;
};
struct mxser_mon_ext {
unsigned long rx_cnt[32];
unsigned long tx_cnt[32];
unsigned long up_rxcnt[32];
unsigned long up_txcnt[32];
int modem_status[32];
long baudrate[32];
int databits[32];
int stopbits[32];
int parity[32];
int flowctrl[32];
int fifo[32];
int iftype[32];
};
struct mxser_hwconf {
int board_type;
int ports;
int irq;
int vector;
int vector_mask;
int uart_type;
int ioaddr[MXSER_PORTS_PER_BOARD];
int baud_base[MXSER_PORTS_PER_BOARD];
moxa_pci_info pciInfo;
int IsMoxaMustChipFlag; /* add by Victor Yu. 08-30-2002 */
int MaxCanSetBaudRate[MXSER_PORTS_PER_BOARD]; /* add by Victor Yu. 09-04-2002 */
int opmode_ioaddr[MXSER_PORTS_PER_BOARD]; /* add by Victor Yu. 01-05-2004 */
};
struct mxser_struct {
int port;
int base; /* port base address */
int irq; /* port using irq no. */
int vector; /* port irq vector */
int vectormask; /* port vector mask */
int rx_high_water;
int rx_trigger; /* Rx fifo trigger level */
int rx_low_water;
int baud_base; /* max. speed */
int flags; /* defined in tty.h */
int type; /* UART type */
struct tty_struct *tty;
int read_status_mask;
int ignore_status_mask;
int xmit_fifo_size;
int custom_divisor;
int x_char; /* xon/xoff character */
int close_delay;
unsigned short closing_wait;
int IER; /* Interrupt Enable Register */
int MCR; /* Modem control register */
unsigned long event;
int count; /* # of fd on device */
int blocked_open; /* # of blocked opens */
unsigned char *xmit_buf;
int xmit_head;
int xmit_tail;
int xmit_cnt;
struct work_struct tqueue;
struct ktermios normal_termios;
struct ktermios callout_termios;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
wait_queue_head_t delta_msr_wait;
struct async_icount icount; /* kernel counters for the 4 input interrupts */
int timeout;
int IsMoxaMustChipFlag; /* add by Victor Yu. 08-30-2002 */
int MaxCanSetBaudRate; /* add by Victor Yu. 09-04-2002 */
int opmode_ioaddr; /* add by Victor Yu. 01-05-2004 */
unsigned char stop_rx;
unsigned char ldisc_stop_rx;
long realbaud;
struct mxser_mon mon_data;
unsigned char err_shadow;
spinlock_t slock;
};
struct mxser_mstatus {
tcflag_t cflag;
int cts;
int dsr;
int ri;
int dcd;
};
static struct mxser_mstatus GMStatus[MXSER_PORTS];
static int mxserBoardCAP[MXSER_BOARDS] = {
0, 0, 0, 0
/* 0x180, 0x280, 0x200, 0x320 */
};
static struct tty_driver *mxvar_sdriver;
static struct mxser_struct mxvar_table[MXSER_PORTS];
static struct tty_struct *mxvar_tty[MXSER_PORTS + 1];
static struct ktermios *mxvar_termios[MXSER_PORTS + 1];
static struct ktermios *mxvar_termios_locked[MXSER_PORTS + 1];
static struct mxser_log mxvar_log;
static int mxvar_diagflag;
static unsigned char mxser_msr[MXSER_PORTS + 1];
static struct mxser_mon_ext mon_data_ext;
static int mxser_set_baud_method[MXSER_PORTS + 1];
static spinlock_t gm_lock;
/*
* This is used to figure out the divisor speeds and the timeouts
*/
static struct mxser_hwconf mxsercfg[MXSER_BOARDS];
/*
* static functions:
*/
static void mxser_getcfg(int board, struct mxser_hwconf *hwconf);
static int mxser_init(void);
/* static void mxser_poll(unsigned long); */
static int mxser_get_ISA_conf(int, struct mxser_hwconf *);
static int mxser_get_PCI_conf(int, int, int, struct mxser_hwconf *);
static void mxser_do_softint(struct work_struct *);
static int mxser_open(struct tty_struct *, struct file *);
static void mxser_close(struct tty_struct *, struct file *);
static int mxser_write(struct tty_struct *, const unsigned char *, int);
static int mxser_write_room(struct tty_struct *);
static void mxser_flush_buffer(struct tty_struct *);
static int mxser_chars_in_buffer(struct tty_struct *);
static void mxser_flush_chars(struct tty_struct *);
static void mxser_put_char(struct tty_struct *, unsigned char);
static int mxser_ioctl(struct tty_struct *, struct file *, uint, ulong);
static int mxser_ioctl_special(unsigned int, void __user *);
static void mxser_throttle(struct tty_struct *);
static void mxser_unthrottle(struct tty_struct *);
static void mxser_set_termios(struct tty_struct *, struct ktermios *);
static void mxser_stop(struct tty_struct *);
static void mxser_start(struct tty_struct *);
static void mxser_hangup(struct tty_struct *);
static void mxser_rs_break(struct tty_struct *, int);
static irqreturn_t mxser_interrupt(int, void *);
static void mxser_receive_chars(struct mxser_struct *, int *);
static void mxser_transmit_chars(struct mxser_struct *);
static void mxser_check_modem_status(struct mxser_struct *, int);
static int mxser_block_til_ready(struct tty_struct *, struct file *, struct mxser_struct *);
static int mxser_startup(struct mxser_struct *);
static void mxser_shutdown(struct mxser_struct *);
static int mxser_change_speed(struct mxser_struct *, struct ktermios *old_termios);
static int mxser_get_serial_info(struct mxser_struct *, struct serial_struct __user *);
static int mxser_set_serial_info(struct mxser_struct *, struct serial_struct __user *);
static int mxser_get_lsr_info(struct mxser_struct *, unsigned int __user *);
static void mxser_send_break(struct mxser_struct *, int);
static int mxser_tiocmget(struct tty_struct *, struct file *);
static int mxser_tiocmset(struct tty_struct *, struct file *, unsigned int, unsigned int);
static int mxser_set_baud(struct mxser_struct *info, long newspd);
static void mxser_wait_until_sent(struct tty_struct *tty, int timeout);
static void mxser_startrx(struct tty_struct *tty);
static void mxser_stoprx(struct tty_struct *tty);
static int CheckIsMoxaMust(int io)
{
u8 oldmcr, hwid;
int i;
outb(0, io + UART_LCR);
DISABLE_MOXA_MUST_ENCHANCE_MODE(io);
oldmcr = inb(io + UART_MCR);
outb(0, io + UART_MCR);
SET_MOXA_MUST_XON1_VALUE(io, 0x11);
if ((hwid = inb(io + UART_MCR)) != 0) {
outb(oldmcr, io + UART_MCR);
return MOXA_OTHER_UART;
}
GET_MOXA_MUST_HARDWARE_ID(io, &hwid);
for (i = 0; i < UART_TYPE_NUM; i++) {
if (hwid == Gmoxa_uart_id[i])
return (int)hwid;
}
return MOXA_OTHER_UART;
}
/* above is modified by Victor Yu. 08-15-2002 */
static const struct tty_operations mxser_ops = {
.open = mxser_open,
.close = mxser_close,
.write = mxser_write,
.put_char = mxser_put_char,
.flush_chars = mxser_flush_chars,
.write_room = mxser_write_room,
.chars_in_buffer = mxser_chars_in_buffer,
.flush_buffer = mxser_flush_buffer,
.ioctl = mxser_ioctl,
.throttle = mxser_throttle,
.unthrottle = mxser_unthrottle,
.set_termios = mxser_set_termios,
.stop = mxser_stop,
.start = mxser_start,
.hangup = mxser_hangup,
.break_ctl = mxser_rs_break,
.wait_until_sent = mxser_wait_until_sent,
.tiocmget = mxser_tiocmget,
.tiocmset = mxser_tiocmset,
};
/*
* The MOXA Smartio/Industio serial driver boot-time initialization code!
*/
static int __init mxser_module_init(void)
{
int ret;
if (verbose)
printk(KERN_DEBUG "Loading module mxser ...\n");
ret = mxser_init();
if (verbose)
printk(KERN_DEBUG "Done.\n");
return ret;
}
static void __exit mxser_module_exit(void)
{
int i, err;
if (verbose)
printk(KERN_DEBUG "Unloading module mxser ...\n");
err = tty_unregister_driver(mxvar_sdriver);
if (!err)
put_tty_driver(mxvar_sdriver);
else
printk(KERN_ERR "Couldn't unregister MOXA Smartio/Industio family serial driver\n");
for (i = 0; i < MXSER_BOARDS; i++) {
struct pci_dev *pdev;
if (mxsercfg[i].board_type == -1)
continue;
else {
pdev = mxsercfg[i].pciInfo.pdev;
free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]);
if (pdev != NULL) { /* PCI */
release_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
release_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3));
pci_dev_put(pdev);
} else {
release_region(mxsercfg[i].ioaddr[0], 8 * mxsercfg[i].ports);
release_region(mxsercfg[i].vector, 1);
}
}
}
if (verbose)
printk(KERN_DEBUG "Done.\n");
}
static void process_txrx_fifo(struct mxser_struct *info)
{
int i;
if ((info->type == PORT_16450) || (info->type == PORT_8250)) {
info->rx_trigger = 1;
info->rx_high_water = 1;
info->rx_low_water = 1;
info->xmit_fifo_size = 1;
} else {
for (i = 0; i < UART_INFO_NUM; i++) {
if (info->IsMoxaMustChipFlag == Gpci_uart_info[i].type) {
info->rx_trigger = Gpci_uart_info[i].rx_trigger;
info->rx_low_water = Gpci_uart_info[i].rx_low_water;
info->rx_high_water = Gpci_uart_info[i].rx_high_water;
info->xmit_fifo_size = Gpci_uart_info[i].xmit_fifo_size;
break;
}
}
}
}
static int mxser_initbrd(int board, struct mxser_hwconf *hwconf)
{
struct mxser_struct *info;
int retval;
int i, n;
n = board * MXSER_PORTS_PER_BOARD;
info = &mxvar_table[n];
/*if (verbose) */ {
printk(KERN_DEBUG " ttyMI%d - ttyMI%d ",
n, n + hwconf->ports - 1);
printk(" max. baud rate = %d bps.\n",
hwconf->MaxCanSetBaudRate[0]);
}
for (i = 0; i < hwconf->ports; i++, n++, info++) {
info->port = n;
info->base = hwconf->ioaddr[i];
info->irq = hwconf->irq;
info->vector = hwconf->vector;
info->vectormask = hwconf->vector_mask;
info->opmode_ioaddr = hwconf->opmode_ioaddr[i]; /* add by Victor Yu. 01-05-2004 */
info->stop_rx = 0;
info->ldisc_stop_rx = 0;
info->IsMoxaMustChipFlag = hwconf->IsMoxaMustChipFlag;
/* Enhance mode enabled here */
if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) {
ENABLE_MOXA_MUST_ENCHANCE_MODE(info->base);
}
info->flags = ASYNC_SHARE_IRQ;
info->type = hwconf->uart_type;
info->baud_base = hwconf->baud_base[i];
info->MaxCanSetBaudRate = hwconf->MaxCanSetBaudRate[i];
process_txrx_fifo(info);
info->custom_divisor = hwconf->baud_base[i] * 16;
info->close_delay = 5 * HZ / 10;
info->closing_wait = 30 * HZ;
INIT_WORK(&info->tqueue, mxser_do_softint);
info->normal_termios = mxvar_sdriver->init_termios;
init_waitqueue_head(&info->open_wait);
init_waitqueue_head(&info->close_wait);
init_waitqueue_head(&info->delta_msr_wait);
memset(&info->mon_data, 0, sizeof(struct mxser_mon));
info->err_shadow = 0;
spin_lock_init(&info->slock);
}
/*
* Allocate the IRQ if necessary
*/
/* before set INT ISR, disable all int */
for (i = 0; i < hwconf->ports; i++) {
outb(inb(hwconf->ioaddr[i] + UART_IER) & 0xf0,
hwconf->ioaddr[i] + UART_IER);
}
n = board * MXSER_PORTS_PER_BOARD;
info = &mxvar_table[n];
retval = request_irq(hwconf->irq, mxser_interrupt, IRQ_T(info),
"mxser", info);
if (retval) {
printk(KERN_ERR "Board %d: %s",
board, mxser_brdname[hwconf->board_type - 1]);
printk(" Request irq failed, IRQ (%d) may conflict with"
" another device.\n", info->irq);
return retval;
}
return 0;
}
static void mxser_getcfg(int board, struct mxser_hwconf *hwconf)
{
mxsercfg[board] = *hwconf;
}
#ifdef CONFIG_PCI
static int mxser_get_PCI_conf(int busnum, int devnum, int board_type, struct mxser_hwconf *hwconf)
{
int i, j;
/* unsigned int val; */
unsigned int ioaddress;
struct pci_dev *pdev = hwconf->pciInfo.pdev;
/* io address */
hwconf->board_type = board_type;
hwconf->ports = mxser_numports[board_type - 1];
ioaddress = pci_resource_start(pdev, 2);
request_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2),
"mxser(IO)");
for (i = 0; i < hwconf->ports; i++)
hwconf->ioaddr[i] = ioaddress + 8 * i;
/* vector */
ioaddress = pci_resource_start(pdev, 3);
request_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3),
"mxser(vector)");
hwconf->vector = ioaddress;
/* irq */
hwconf->irq = hwconf->pciInfo.pdev->irq;
hwconf->IsMoxaMustChipFlag = CheckIsMoxaMust(hwconf->ioaddr[0]);
hwconf->uart_type = PORT_16550A;
hwconf->vector_mask = 0;
for (i = 0; i < hwconf->ports; i++) {
for (j = 0; j < UART_INFO_NUM; j++) {
if (Gpci_uart_info[j].type == hwconf->IsMoxaMustChipFlag) {
hwconf->MaxCanSetBaudRate[i] = Gpci_uart_info[j].max_baud;
/* exception....CP-102 */
if (board_type == MXSER_BOARD_CP102)
hwconf->MaxCanSetBaudRate[i] = 921600;
break;
}
}
}
if (hwconf->IsMoxaMustChipFlag == MOXA_MUST_MU860_HWID) {
for (i = 0; i < hwconf->ports; i++) {
if (i < 4)
hwconf->opmode_ioaddr[i] = ioaddress + 4;
else
hwconf->opmode_ioaddr[i] = ioaddress + 0x0c;
}
outb(0, ioaddress + 4); /* default set to RS232 mode */
outb(0, ioaddress + 0x0c); /* default set to RS232 mode */
}
for (i = 0; i < hwconf->ports; i++) {
hwconf->vector_mask |= (1 << i);
hwconf->baud_base[i] = 921600;
}
return 0;
}
#endif
static int mxser_init(void)
{
int i, m, retval, b, n;
struct pci_dev *pdev = NULL;
int index;
unsigned char busnum, devnum;
struct mxser_hwconf hwconf;
mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1);
if (!mxvar_sdriver)
return -ENOMEM;
spin_lock_init(&gm_lock);
for (i = 0; i < MXSER_BOARDS; i++) {
mxsercfg[i].board_type = -1;
}
printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n",
MXSER_VERSION);
/* Initialize the tty_driver structure */
memset(mxvar_sdriver, 0, sizeof(struct tty_driver));
mxvar_sdriver->owner = THIS_MODULE;
mxvar_sdriver->magic = TTY_DRIVER_MAGIC;
mxvar_sdriver->name = "ttyMI";
mxvar_sdriver->major = ttymajor;
mxvar_sdriver->minor_start = 0;
mxvar_sdriver->num = MXSER_PORTS + 1;
mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL;
mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL;
mxvar_sdriver->init_termios = tty_std_termios;
mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
mxvar_sdriver->init_termios.c_ispeed = 9600;
mxvar_sdriver->init_termios.c_ospeed = 9600;
mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW;
tty_set_operations(mxvar_sdriver, &mxser_ops);
mxvar_sdriver->ttys = mxvar_tty;
mxvar_sdriver->termios = mxvar_termios;
mxvar_sdriver->termios_locked = mxvar_termios_locked;
mxvar_diagflag = 0;
memset(mxvar_table, 0, MXSER_PORTS * sizeof(struct mxser_struct));
memset(&mxvar_log, 0, sizeof(struct mxser_log));
memset(&mxser_msr, 0, sizeof(unsigned char) * (MXSER_PORTS + 1));
memset(&mon_data_ext, 0, sizeof(struct mxser_mon_ext));
memset(&mxser_set_baud_method, 0, sizeof(int) * (MXSER_PORTS + 1));
memset(&hwconf, 0, sizeof(struct mxser_hwconf));
m = 0;
/* Start finding ISA boards here */
for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
int cap;
if (!(cap = mxserBoardCAP[b]))
continue;
retval = mxser_get_ISA_conf(cap, &hwconf);
if (retval != 0)
printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n",
mxser_brdname[hwconf.board_type - 1], ioaddr[b]);
if (retval <= 0) {
if (retval == MXSER_ERR_IRQ)
printk(KERN_ERR "Invalid interrupt number, "
"board not configured\n");
else if (retval == MXSER_ERR_IRQ_CONFLIT)
printk(KERN_ERR "Invalid interrupt number, "
"board not configured\n");
else if (retval == MXSER_ERR_VECTOR)
printk(KERN_ERR "Invalid interrupt vector, "
"board not configured\n");
else if (retval == MXSER_ERR_IOADDR)
printk(KERN_ERR "Invalid I/O address, "
"board not configured\n");
continue;
}
hwconf.pciInfo.busNum = 0;
hwconf.pciInfo.devNum = 0;
hwconf.pciInfo.pdev = NULL;
mxser_getcfg(m, &hwconf);
/*
* init mxsercfg first,
* or mxsercfg data is not correct on ISR.
*/
/* mxser_initbrd will hook ISR. */
if (mxser_initbrd(m, &hwconf) < 0)
continue;
m++;
}
/* Start finding ISA boards from module arg */
for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
int cap;
if (!(cap = ioaddr[b]))
continue;
retval = mxser_get_ISA_conf(cap, &hwconf);
if (retval != 0)
printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n",
mxser_brdname[hwconf.board_type - 1], ioaddr[b]);
if (retval <= 0) {
if (retval == MXSER_ERR_IRQ)
printk(KERN_ERR "Invalid interrupt number, "
"board not configured\n");
else if (retval == MXSER_ERR_IRQ_CONFLIT)
printk(KERN_ERR "Invalid interrupt number, "
"board not configured\n");
else if (retval == MXSER_ERR_VECTOR)
printk(KERN_ERR "Invalid interrupt vector, "
"board not configured\n");
else if (retval == MXSER_ERR_IOADDR)
printk(KERN_ERR "Invalid I/O address, "
"board not configured\n");
continue;
}
hwconf.pciInfo.busNum = 0;
hwconf.pciInfo.devNum = 0;
hwconf.pciInfo.pdev = NULL;
mxser_getcfg(m, &hwconf);
/*
* init mxsercfg first,
* or mxsercfg data is not correct on ISR.
*/
/* mxser_initbrd will hook ISR. */
if (mxser_initbrd(m, &hwconf) < 0)
continue;
m++;
}
/* start finding PCI board here */
#ifdef CONFIG_PCI
n = ARRAY_SIZE(mxser_pcibrds) - 1;
index = 0;
b = 0;
while (b < n) {
pdev = pci_get_device(mxser_pcibrds[b].vendor,
mxser_pcibrds[b].device, pdev);
if (pdev == NULL) {
b++;
continue;
}
hwconf.pciInfo.busNum = busnum = pdev->bus->number;
hwconf.pciInfo.devNum = devnum = PCI_SLOT(pdev->devfn) << 3;
hwconf.pciInfo.pdev = pdev;
printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n",
mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1],
busnum, devnum >> 3);
index++;
if (m >= MXSER_BOARDS)
printk(KERN_ERR
"Too many Smartio/Industio family boards find "
"(maximum %d), board not configured\n",
MXSER_BOARDS);
else {
if (pci_enable_device(pdev)) {
printk(KERN_ERR "Moxa SmartI/O PCI enable "
"fail !\n");
continue;
}
retval = mxser_get_PCI_conf(busnum, devnum,
(int)mxser_pcibrds[b].driver_data,
&hwconf);
if (retval < 0) {
if (retval == MXSER_ERR_IRQ)
printk(KERN_ERR
"Invalid interrupt number, "
"board not configured\n");
else if (retval == MXSER_ERR_IRQ_CONFLIT)
printk(KERN_ERR
"Invalid interrupt number, "
"board not configured\n");
else if (retval == MXSER_ERR_VECTOR)
printk(KERN_ERR
"Invalid interrupt vector, "
"board not configured\n");
else if (retval == MXSER_ERR_IOADDR)
printk(KERN_ERR
"Invalid I/O address, "
"board not configured\n");
continue;
}
mxser_getcfg(m, &hwconf);
/* init mxsercfg first,
* or mxsercfg data is not correct on ISR.
*/
/* mxser_initbrd will hook ISR. */
if (mxser_initbrd(m, &hwconf) < 0)
continue;
m++;
/* Keep an extra reference if we succeeded. It will
be returned at unload time */
pci_dev_get(pdev);
}
}
#endif
retval = tty_register_driver(mxvar_sdriver);
if (retval) {
printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family"
" driver !\n");
put_tty_driver(mxvar_sdriver);
for (i = 0; i < MXSER_BOARDS; i++) {
if (mxsercfg[i].board_type == -1)
continue;
else {
free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]);
/* todo: release io, vector */
}
}
return retval;
}
return 0;
}
static void mxser_do_softint(struct work_struct *work)
{
struct mxser_struct *info =
container_of(work, struct mxser_struct, tqueue);
struct tty_struct *tty;
tty = info->tty;
if (tty) {
if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event))
tty_wakeup(tty);
if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event))
tty_hangup(tty);
}
}
static unsigned char mxser_get_msr(int baseaddr, int mode, int port, struct mxser_struct *info)
{
unsigned char status = 0;
status = inb(baseaddr + UART_MSR);
mxser_msr[port] &= 0x0F;
mxser_msr[port] |= status;
status = mxser_msr[port];
if (mode)
mxser_msr[port] = 0;
return status;
}
/*
* This routine is called whenever a serial port is opened. It
* enables interrupts for a serial port, linking in its async structure into
* the IRQ chain. It also performs the serial-specific
* initialization for the tty structure.
*/
static int mxser_open(struct tty_struct *tty, struct file *filp)
{
struct mxser_struct *info;
int retval, line;
/* initialize driver_data in case something fails */
tty->driver_data = NULL;
line = tty->index;
if (line == MXSER_PORTS)
return 0;
if (line < 0 || line > MXSER_PORTS)
return -ENODEV;
info = mxvar_table + line;
if (!info->base)
return -ENODEV;
tty->driver_data = info;
info->tty = tty;
/*
* Start up serial port
*/
retval = mxser_startup(info);
if (retval)
return retval;
retval = mxser_block_til_ready(tty, filp, info);
if (retval)
return retval;
info->count++;
if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) {
if (tty->driver->subtype == SERIAL_TYPE_NORMAL)
*tty->termios = info->normal_termios;
else
*tty->termios = info->callout_termios;
mxser_change_speed(info, NULL);
}