--- /dev/null
+/*
+ * 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/smp_lock.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 */
+ long session; /* Session of opening process */
+ long pgrp; /* pgrp of opening process */
+ unsigned char *xmit_buf;
+ int xmit_head;
+ int xmit_tail;
+ int xmit_cnt;
+ struct work_struct tqueue;
+ struct termios normal_termios;
+ struct termios 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 termios *mxvar_termios[MXSER_PORTS + 1];
+static struct termios *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(void *);
+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 termios *);
+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 *, struct pt_regs *);
+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 termios *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 " ttyM%d - ttyM%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);
+ 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->magic = TTY_DRIVER_MAGIC;
+ mxvar_sdriver->name = "ttyM";
+ 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->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(void *private_)
+{
+ struct mxser_struct *info = private_;
+ 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);
+ }
+
+ info->session = current->signal->session;
+ info->pgrp = process_group(current);
+
+ /*
+ status = mxser_get_msr(info->base, 0, info->port);
+ mxser_check_modem_status(info, status);
+ */
+
+/* unmark here for very high baud rate (ex. 921600 bps) used */
+ tty->low_latency = 1;
+ return 0;
+}
+
+/*
+ * This routine is called when the serial port gets closed. First, we
+ * wait for the last remaining data to be sent. Then, we unlink its
+ * async structure from the interrupt chain if necessary, and we free
+ * that IRQ if nothing is left in the chain.
+ */
+static void mxser_close(struct tty_struct *tty, struct file *filp)
+{
+ struct mxser_struct *info = tty->driver_data;
+
+ unsigned long timeout;
+ unsigned long flags;
+ struct tty_ldisc *ld;
+
+ if (tty->index == MXSER_PORTS)
+ return;
+ if (!info)
+ return;
+
+ spin_lock_irqsave(&info->slock, flags);
+
+ if (tty_hung_up_p(filp)) {
+ spin_unlock_irqrestore(&info->slock, flags);
+ return;
+ }
+ if ((tty->count == 1) && (info->count != 1)) {
+ /*
+ * Uh, oh. tty->count is 1, which means that the tty
+ * structure will be freed. Info->count should always
+ * be one in these conditions. If it's greater than
+ * one, we've got real problems, since it means the
+ * serial port won't be shutdown.
+ */
+ printk(KERN_ERR "mxser_close: bad serial port count; "
+ "tty->count is 1, info->count is %d\n", info->count);
+ info->count = 1;
+ }
+ if (--info->count < 0) {
+ printk(KERN_ERR "mxser_close: bad serial port count for "
+ "ttys%d: %d\n", info->port, info->count);
+ info->count = 0;
+ }
+ if (info->count) {
+ spin_unlock_irqrestore(&info->slock, flags);
+ return;
+ }
+ info->flags |= ASYNC_CLOSING;
+ spin_unlock_irqrestore(&info->slock, flags);
+ /*
+ * Save the termios structure, since this port may have
+ * separate termios for callout and dialin.
+ */
+ if (info->flags & ASYNC_NORMAL_ACTIVE)
+ info->normal_termios = *tty->termios;
+ /*
+ * Now we wait for the transmit buffer to clear; and we notify
+ * the line discipline to only process XON/XOFF characters.
+ */
+ tty->closing = 1;
+ if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE)
+ tty_wait_until_sent(tty, info->closing_wait);
+ /*
+ * At this point we stop accepting input. To do this, we
+ * disable the receive line status interrupts, and tell the
+ * interrupt driver to stop checking the data ready bit in the
+ * line status register.
+ */
+ info->IER &= ~UART_IER_RLSI;
+ if (info->IsMoxaMustChipFlag)
+ info->IER &= ~MOXA_MUST_RECV_ISR;
+/* by William
+ info->read_status_mask &= ~UART_LSR_DR;
+*/
+ if (info->flags & ASYNC_INITIALIZED) {
+ outb(info->IER, info->base + UART_IER);
+ /*
+ * Before we drop DTR, make sure the UART transmitter
+ * has completely drained; this is especially
+ * important if there is a transmit FIFO!
+ */
+ timeout = jiffies + HZ;
+ while (!(inb(info->base + UART_LSR) & UART_LSR_TEMT)) {
+ schedule_timeout_interruptible(5);
+ if (time_after(jiffies, timeout))
+ break;
+ }
+ }
+ mxser_shutdown(info);
+
+ if (tty->driver->flush_buffer)
+ tty->driver->flush_buffer(tty);
+
+ ld = tty_ldisc_ref(tty);
+ if (ld) {
+ if (ld->flush_buffer)
+ ld->flush_buffer(tty);
+ tty_ldisc_deref(ld);
+ }
+
+ tty->closing = 0;
+ info->event = 0;
+ info->tty = NULL;
+ if (info->blocked_open) {
+ if (info->close_delay)
+ schedule_timeout_interruptible(info->close_delay);
+ wake_up_interruptible(&info->open_wait);
+ }
+
+ info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
+ wake_up_interruptible(&info->close_wait);
+
+}
+
+static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count)
+{
+ int c, total = 0;
+ struct mxser_struct *info = tty->driver_data;
+ unsigned long flags;
+
+ if (!info->xmit_buf)
+ return 0;
+
+ while (1) {
+ c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+ SERIAL_XMIT_SIZE - info->xmit_head));
+ if (c <= 0)
+ break;
+
+ memcpy(info->xmit_buf + info->xmit_head, buf, c);
+ spin_lock_irqsave(&info->slock, flags);
+ info->xmit_head = (info->xmit_head + c) &
+ (SERIAL_XMIT_SIZE - 1);
+ info->xmit_cnt += c;
+ spin_unlock_irqrestore(&info->slock, flags);
+
+ buf += c;
+ count -= c;
+ total += c;
+ }
+
+ if (info->xmit_cnt && !tty->stopped && !(info->IER & UART_IER_THRI)) {
+ if (!tty->hw_stopped ||
+ (info->type == PORT_16550A) ||
+ (info->IsMoxaMustChipFlag)) {
+ spin_lock_irqsave(&info->slock, flags);
+ info->IER |= UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+ spin_unlock_irqrestore(&info->slock, flags);
+ }
+ }
+ return total;
+}
+
+static void mxser_put_char(struct tty_struct *tty, unsigned char ch)
+{
+ struct mxser_struct *info = tty->driver_data;
+ unsigned long flags;
+
+ if (!info->xmit_buf)
+ return;
+
+ if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1)
+ return;
+
+ spin_lock_irqsave(&info->slock, flags);
+ info->xmit_buf[info->xmit_head++] = ch;
+ info->xmit_head &= SERIAL_XMIT_SIZE - 1;
+ info->xmit_cnt++;
+ spin_unlock_irqrestore(&info->slock, flags);
+ if (!tty->stopped && !(info->IER & UART_IER_THRI)) {
+ if (!tty->hw_stopped ||
+ (info->type == PORT_16550A) ||
+ info->IsMoxaMustChipFlag) {
+ spin_lock_irqsave(&info->slock, flags);
+ info->IER |= UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+ spin_unlock_irqrestore(&info->slock, flags);
+ }
+ }
+}
+
+
+static void mxser_flush_chars(struct tty_struct *tty)
+{
+ struct mxser_struct *info = tty->driver_data;
+ unsigned long flags;
+
+ if (info->xmit_cnt <= 0 ||
+ tty->stopped ||
+ !info->xmit_buf ||
+ (tty->hw_stopped &&
+ (info->type != PORT_16550A) &&
+ (!info->IsMoxaMustChipFlag)
+ ))
+ return;
+
+ spin_lock_irqsave(&info->slock, flags);
+
+ info->IER |= UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+
+ spin_unlock_irqrestore(&info->slock, flags);
+}
+
+static int mxser_write_room(struct tty_struct *tty)
+{
+ struct mxser_struct *info = tty->driver_data;
+ int ret;
+
+ ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
+ if (ret < 0)
+ ret = 0;
+ return ret;
+}
+
+static int mxser_chars_in_buffer(struct tty_struct *tty)
+{
+ struct mxser_struct *info = tty->driver_data;
+ return info->xmit_cnt;
+}
+
+static void mxser_flush_buffer(struct tty_struct *tty)
+{
+ struct mxser_struct *info = tty->driver_data;
+ char fcr;
+ unsigned long flags;
+
+
+ spin_lock_irqsave(&info->slock, flags);
+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+
+ /* below added by shinhay */
+ fcr = inb(info->base + UART_FCR);
+ outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
+ info->base + UART_FCR);
+ outb(fcr, info->base + UART_FCR);
+
+ spin_unlock_irqrestore(&info->slock, flags);
+ /* above added by shinhay */
+
+ wake_up_interruptible(&tty->write_wait);
+ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup)
+ (tty->ldisc.write_wakeup) (tty);
+}
+
+static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct mxser_struct *info = tty->driver_data;
+ int retval;
+ struct async_icount cprev, cnow; /* kernel counter temps */
+ struct serial_icounter_struct __user *p_cuser;
+ unsigned long templ;
+ unsigned long flags;
+ void __user *argp = (void __user *)arg;
+
+ if (tty->index == MXSER_PORTS)
+ return mxser_ioctl_special(cmd, argp);
+
+ /* following add by Victor Yu. 01-05-2004 */
+ if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) {
+ int opmode, p;
+ static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f };
+ int shiftbit;
+ unsigned char val, mask;
+
+ p = info->port % 4;
+ if (cmd == MOXA_SET_OP_MODE) {
+ if (get_user(opmode, (int __user *) argp))
+ return -EFAULT;
+ if (opmode != RS232_MODE &&
+ opmode != RS485_2WIRE_MODE &&
+ opmode != RS422_MODE &&
+ opmode != RS485_4WIRE_MODE)
+ return -EFAULT;
+ mask = ModeMask[p];
+ shiftbit = p * 2;
+ val = inb(info->opmode_ioaddr);
+ val &= mask;
+ val |= (opmode << shiftbit);
+ outb(val, info->opmode_ioaddr);
+ } else {
+ shiftbit = p * 2;
+ opmode = inb(info->opmode_ioaddr) >> shiftbit;
+ opmode &= OP_MODE_MASK;
+ if (copy_to_user(argp, &opmode, sizeof(int)))
+ return -EFAULT;
+ }
+ return 0;
+ }
+ /* above add by Victor Yu. 01-05-2004 */
+
+ if ((cmd != TIOCGSERIAL) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+ }
+ switch (cmd) {
+ case TCSBRK: /* SVID version: non-zero arg --> no break */
+ retval = tty_check_change(tty);
+ if (retval)
+ return retval;
+ tty_wait_until_sent(tty, 0);
+ if (!arg)
+ mxser_send_break(info, HZ / 4); /* 1/4 second */
+ return 0;
+ case TCSBRKP: /* support for POSIX tcsendbreak() */
+ retval = tty_check_change(tty);
+ if (retval)
+ return retval;
+ tty_wait_until_sent(tty, 0);
+ mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4);
+ return 0;
+ case TIOCGSOFTCAR:
+ return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
+ case TIOCSSOFTCAR:
+ if (get_user(templ, (unsigned long __user *) argp))
+ return -EFAULT;
+ arg = templ;
+ tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
+ return 0;
+ case TIOCGSERIAL:
+ return mxser_get_serial_info(info, argp);
+ case TIOCSSERIAL:
+ return mxser_set_serial_info(info, argp);
+ case TIOCSERGETLSR: /* Get line status register */
+ return mxser_get_lsr_info(info, argp);
+ /*
+ * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
+ * - mask passed in arg for lines of interest
+ * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
+ * Caller should use TIOCGICOUNT to see which one it was
+ */
+ case TIOCMIWAIT: {
+ DECLARE_WAITQUEUE(wait, current);
+ int ret;
+ spin_lock_irqsave(&info->slock, flags);
+ cprev = info->icount; /* note the counters on entry */
+ spin_unlock_irqrestore(&info->slock, flags);
+
+ add_wait_queue(&info->delta_msr_wait, &wait);
+ while (1) {
+ spin_lock_irqsave(&info->slock, flags);
+ cnow = info->icount; /* atomic copy */
+ spin_unlock_irqrestore(&info->slock, flags);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (((arg & TIOCM_RNG) &&
+ (cnow.rng != cprev.rng)) ||
+ ((arg & TIOCM_DSR) &&
+ (cnow.dsr != cprev.dsr)) ||
+ ((arg & TIOCM_CD) &&
+ (cnow.dcd != cprev.dcd)) ||
+ ((arg & TIOCM_CTS) &&
+ (cnow.cts != cprev.cts))) {
+ ret = 0;
+ break;
+ }
+ /* see if a signal did it */
+ if (signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+ cprev = cnow;
+ }
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&info->delta_msr_wait, &wait);
+ break;
+ }
+ /* NOTREACHED */
+ /*
+ * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
+ * Return: write counters to the user passed counter struct
+ * NB: both 1->0 and 0->1 transitions are counted except for
+ * RI where only 0->1 is counted.
+ */
+ case TIOCGICOUNT:
+ spin_lock_irqsave(&info->slock, flags);
+ cnow = info->icount;
+ spin_unlock_irqrestore(&info->slock, flags);
+ p_cuser = argp;
+ /* modified by casper 1/11/2000 */
+ if (put_user(cnow.frame, &p_cuser->frame))
+ return -EFAULT;
+ if (put_user(cnow.brk, &p_cuser->brk))
+ return -EFAULT;
+ if (put_user(cnow.overrun, &p_cuser->overrun))
+ return -EFAULT;
+ if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
+ return -EFAULT;
+ if (put_user(cnow.parity, &p_cuser->parity))
+ return -EFAULT;
+ if (put_user(cnow.rx, &p_cuser->rx))
+ return -EFAULT;
+ if (put_user(cnow.tx, &p_cuser->tx))
+ return -EFAULT;
+ put_user(cnow.cts, &p_cuser->cts);
+ put_user(cnow.dsr, &p_cuser->dsr);
+ put_user(cnow.rng, &p_cuser->rng);
+ put_user(cnow.dcd, &p_cuser->dcd);
+ return 0;
+ case MOXA_HighSpeedOn:
+ return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
+ case MOXA_SDS_RSTICOUNTER: {
+ info->mon_data.rxcnt = 0;
+ info->mon_data.txcnt = 0;
+ return 0;
+ }
+/* (above) added by James. */
+ case MOXA_ASPP_SETBAUD:{
+ long baud;
+ if (get_user(baud, (long __user *)argp))
+ return -EFAULT;
+ mxser_set_baud(info, baud);
+ return 0;
+ }
+ case MOXA_ASPP_GETBAUD:
+ if (copy_to_user(argp, &info->realbaud, sizeof(long)))
+ return -EFAULT;
+
+ return 0;
+
+ case MOXA_ASPP_OQUEUE:{
+ int len, lsr;
+
+ len = mxser_chars_in_buffer(tty);
+
+ lsr = inb(info->base + UART_LSR) & UART_LSR_TEMT;
+
+ len += (lsr ? 0 : 1);
+
+ if (copy_to_user(argp, &len, sizeof(int)))
+ return -EFAULT;
+
+ return 0;
+ }
+ case MOXA_ASPP_MON: {
+ int mcr, status;
+
+ /* info->mon_data.ser_param = tty->termios->c_cflag; */
+
+ status = mxser_get_msr(info->base, 1, info->port, info);
+ mxser_check_modem_status(info, status);
+
+ mcr = inb(info->base + UART_MCR);
+ if (mcr & MOXA_MUST_MCR_XON_FLAG)
+ info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD;
+ else
+ info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD;
+
+ if (mcr & MOXA_MUST_MCR_TX_XON)
+ info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT;
+ else
+ info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT;
+
+ if (info->tty->hw_stopped)
+ info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD;
+ else
+ info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD;
+
+ if (copy_to_user(argp, &info->mon_data,
+ sizeof(struct mxser_mon)))
+ return -EFAULT;
+
+ return 0;
+ }
+
+ case MOXA_ASPP_LSTATUS: {
+ if (copy_to_user(argp, &info->err_shadow,
+ sizeof(unsigned char)))
+ return -EFAULT;
+
+ info->err_shadow = 0;
+ return 0;
+ }
+ case MOXA_SET_BAUD_METHOD: {
+ int method;
+
+ if (get_user(method, (int __user *)argp))
+ return -EFAULT;
+ mxser_set_baud_method[info->port] = method;
+ if (copy_to_user(argp, &method, sizeof(int)))
+ return -EFAULT;
+
+ return 0;
+ }
+ default:
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+#ifndef CMSPAR
+#define CMSPAR 010000000000
+#endif
+
+static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
+{
+ int i, result, status;
+
+ switch (cmd) {
+ case MOXA_GET_CONF:
+ if (copy_to_user(argp, mxsercfg,
+ sizeof(struct mxser_hwconf) * 4))
+ return -EFAULT;
+ return 0;
+ case MOXA_GET_MAJOR:
+ if (copy_to_user(argp, &ttymajor, sizeof(int)))
+ return -EFAULT;
+ return 0;
+
+ case MOXA_GET_CUMAJOR:
+ if (copy_to_user(argp, &calloutmajor, sizeof(int)))
+ return -EFAULT;
+ return 0;
+
+ case MOXA_CHKPORTENABLE:
+ result = 0;
+ for (i = 0; i < MXSER_PORTS; i++) {
+ if (mxvar_table[i].base)
+ result |= (1 << i);
+ }
+ return put_user(result, (unsigned long __user *)argp);
+ case MOXA_GETDATACOUNT:
+ if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log)))
+ return -EFAULT;
+ return 0;
+ case MOXA_GETMSTATUS:
+ for (i = 0; i < MXSER_PORTS; i++) {
+ GMStatus[i].ri = 0;
+ if (!mxvar_table[i].base) {
+ GMStatus[i].dcd = 0;
+ GMStatus[i].dsr = 0;
+ GMStatus[i].cts = 0;
+ continue;
+ }
+
+ if (!mxvar_table[i].tty || !mxvar_table[i].tty->termios)
+ GMStatus[i].cflag = mxvar_table[i].normal_termios.c_cflag;
+ else
+ GMStatus[i].cflag = mxvar_table[i].tty->termios->c_cflag;
+
+ status = inb(mxvar_table[i].base + UART_MSR);
+ if (status & 0x80 /*UART_MSR_DCD */ )
+ GMStatus[i].dcd = 1;
+ else
+ GMStatus[i].dcd = 0;
+
+ if (status & 0x20 /*UART_MSR_DSR */ )
+ GMStatus[i].dsr = 1;
+ else
+ GMStatus[i].dsr = 0;
+
+
+ if (status & 0x10 /*UART_MSR_CTS */ )
+ GMStatus[i].cts = 1;
+ else
+ GMStatus[i].cts = 0;
+ }
+ if (copy_to_user(argp, GMStatus,
+ sizeof(struct mxser_mstatus) * MXSER_PORTS))
+ return -EFAULT;
+ return 0;
+ case MOXA_ASPP_MON_EXT: {
+ int status;
+ int opmode, p;
+ int shiftbit;
+ unsigned cflag, iflag;
+
+ for (i = 0; i < MXSER_PORTS; i++) {
+ if (!mxvar_table[i].base)
+ continue;
+
+ status = mxser_get_msr(mxvar_table[i].base, 0,
+ i, &(mxvar_table[i]));
+ /*
+ mxser_check_modem_status(&mxvar_table[i],
+ status);
+ */
+ if (status & UART_MSR_TERI)
+ mxvar_table[i].icount.rng++;
+ if (status & UART_MSR_DDSR)
+ mxvar_table[i].icount.dsr++;
+ if (status & UART_MSR_DDCD)
+ mxvar_table[i].icount.dcd++;
+ if (status & UART_MSR_DCTS)
+ mxvar_table[i].icount.cts++;
+
+ mxvar_table[i].mon_data.modem_status = status;
+ mon_data_ext.rx_cnt[i] = mxvar_table[i].mon_data.rxcnt;
+ mon_data_ext.tx_cnt[i] = mxvar_table[i].mon_data.txcnt;
+ mon_data_ext.up_rxcnt[i] = mxvar_table[i].mon_data.up_rxcnt;
+ mon_data_ext.up_txcnt[i] = mxvar_table[i].mon_data.up_txcnt;
+ mon_data_ext.modem_status[i] = mxvar_table[i].mon_data.modem_status;
+ mon_data_ext.baudrate[i] = mxvar_table[i].realbaud;
+
+ if (!mxvar_table[i].tty || !mxvar_table[i].tty->termios) {
+ cflag = mxvar_table[i].normal_termios.c_cflag;
+ iflag = mxvar_table[i].normal_termios.c_iflag;
+ } else {
+ cflag = mxvar_table[i].tty->termios->c_cflag;
+ iflag = mxvar_table[i].tty->termios->c_iflag;
+ }
+
+ mon_data_ext.databits[i] = cflag & CSIZE;
+
+ mon_data_ext.stopbits[i] = cflag & CSTOPB;
+
+ mon_data_ext.parity[i] = cflag & (PARENB | PARODD | CMSPAR);
+
+ mon_data_ext.flowctrl[i] = 0x00;
+
+ if (cflag & CRTSCTS)
+ mon_data_ext.flowctrl[i] |= 0x03;
+
+ if (iflag & (IXON | IXOFF))
+ mon_data_ext.flowctrl[i] |= 0x0C;
+
+ if (mxvar_table[i].type == PORT_16550A)
+ mon_data_ext.fifo[i] = 1;
+ else
+ mon_data_ext.fifo[i] = 0;
+
+ p = i % 4;
+ shiftbit = p * 2;
+ opmode = inb(mxvar_table[i].opmode_ioaddr) >> shiftbit;
+ opmode &= OP_MODE_MASK;
+
+ mon_data_ext.iftype[i] = opmode;
+
+ }
+ if (copy_to_user(argp, &mon_data_ext, sizeof(struct mxser_mon_ext)))
+ return -EFAULT;
+
+ return 0;
+
+ }
+ default:
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+static void mxser_stoprx(struct tty_struct *tty)
+{
+ struct mxser_struct *info = tty->driver_data;
+ /* unsigned long flags; */
+
+ info->ldisc_stop_rx = 1;
+ if (I_IXOFF(tty)) {
+ /* MX_LOCK(&info->slock); */
+ /* following add by Victor Yu. 09-02-2002 */
+ if (info->IsMoxaMustChipFlag) {
+ info->IER &= ~MOXA_MUST_RECV_ISR;
+ outb(info->IER, info->base + UART_IER);
+ } else {
+ /* above add by Victor Yu. 09-02-2002 */
+ info->x_char = STOP_CHAR(tty);
+ /* mask by Victor Yu. 09-02-2002 */
+ /* outb(info->IER, 0); */
+ outb(0, info->base + UART_IER);
+ info->IER |= UART_IER_THRI;
+ /* force Tx interrupt */
+ outb(info->IER, info->base + UART_IER);
+ } /* add by Victor Yu. 09-02-2002 */
+ /* MX_UNLOCK(&info->slock); */
+ }
+
+ if (info->tty->termios->c_cflag & CRTSCTS) {
+ /* MX_LOCK(&info->slock); */
+ info->MCR &= ~UART_MCR_RTS;
+ outb(info->MCR, info->base + UART_MCR);
+ /* MX_UNLOCK(&info->slock); */
+ }
+}
+
+static void mxser_startrx(struct tty_struct *tty)
+{
+ struct mxser_struct *info = tty->driver_data;
+ /* unsigned long flags; */
+
+ info->ldisc_stop_rx = 0;
+ if (I_IXOFF(tty)) {
+ if (info->x_char)
+ info->x_char = 0;
+ else {
+ /* MX_LOCK(&info->slock); */
+
+ /* following add by Victor Yu. 09-02-2002 */
+ if (info->IsMoxaMustChipFlag) {
+ info->IER |= MOXA_MUST_RECV_ISR;
+ outb(info->IER, info->base + UART_IER);
+ } else {
+ /* above add by Victor Yu. 09-02-2002 */
+
+ info->x_char = START_CHAR(tty);
+ /* mask by Victor Yu. 09-02-2002 */
+ /* outb(info->IER, 0); */
+ /* add by Victor Yu. 09-02-2002 */
+ outb(0, info->base + UART_IER);
+ /* force Tx interrupt */
+ info->IER |= UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+ } /* add by Victor Yu. 09-02-2002 */
+ /* MX_UNLOCK(&info->slock); */
+ }
+ }
+
+ if (info->tty->termios->c_cflag & CRTSCTS) {
+ /* MX_LOCK(&info->slock); */
+ info->MCR |= UART_MCR_RTS;
+ outb(info->MCR, info->base + UART_MCR);
+ /* MX_UNLOCK(&info->slock); */
+ }
+}
+
+/*
+ * This routine is called by the upper-layer tty layer to signal that
+ * incoming characters should be throttled.
+ */
+static void mxser_throttle(struct tty_struct *tty)
+{
+ /* struct mxser_struct *info = tty->driver_data; */
+ /* unsigned long flags; */
+
+ /* MX_LOCK(&info->slock); */
+ mxser_stoprx(tty);
+ /* MX_UNLOCK(&info->slock); */
+}
+
+static void mxser_unthrottle(struct tty_struct *tty)
+{
+ /* struct mxser_struct *info = tty->driver_data; */
+ /* unsigned long flags; */
+
+ /* MX_LOCK(&info->slock); */
+ mxser_startrx(tty);
+ /* MX_UNLOCK(&info->slock); */
+}
+
+static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios)
+{
+ struct mxser_struct *info = tty->driver_data;
+ unsigned long flags;
+
+ if ((tty->termios->c_cflag != old_termios->c_cflag) ||
+ (RELEVANT_IFLAG(tty->termios->c_iflag) != RELEVANT_IFLAG(old_termios->c_iflag))) {
+
+ mxser_change_speed(info, old_termios);
+
+ if ((old_termios->c_cflag & CRTSCTS) &&
+ !(tty->termios->c_cflag & CRTSCTS)) {
+ tty->hw_stopped = 0;
+ mxser_start(tty);
+ }
+ }
+
+/* Handle sw stopped */
+ if ((old_termios->c_iflag & IXON) &&
+ !(tty->termios->c_iflag & IXON)) {
+ tty->stopped = 0;
+
+ /* following add by Victor Yu. 09-02-2002 */
+ if (info->IsMoxaMustChipFlag) {
+ spin_lock_irqsave(&info->slock, flags);
+ DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base);
+ spin_unlock_irqrestore(&info->slock, flags);
+ }
+ /* above add by Victor Yu. 09-02-2002 */
+
+ mxser_start(tty);
+ }
+}
+
+/*
+ * mxser_stop() and mxser_start()
+ *
+ * This routines are called before setting or resetting tty->stopped.
+ * They enable or disable transmitter interrupts, as necessary.
+ */
+static void mxser_stop(struct tty_struct *tty)
+{
+ struct mxser_struct *info = tty->driver_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->slock, flags);
+ if (info->IER & UART_IER_THRI) {
+ info->IER &= ~UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+ }
+ spin_unlock_irqrestore(&info->slock, flags);
+}
+
+static void mxser_start(struct tty_struct *tty)
+{
+ struct mxser_struct *info = tty->driver_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->slock, flags);
+ if (info->xmit_cnt && info->xmit_buf && !(info->IER & UART_IER_THRI)) {
+ info->IER |= UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+ }
+ spin_unlock_irqrestore(&info->slock, flags);
+}
+
+/*
+ * mxser_wait_until_sent() --- wait until the transmitter is empty
+ */
+static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)
+{
+ struct mxser_struct *info = tty->driver_data;
+ unsigned long orig_jiffies, char_time;
+ int lsr;
+
+ if (info->type == PORT_UNKNOWN)
+ return;
+
+ if (info->xmit_fifo_size == 0)
+ return; /* Just in case.... */
+
+ orig_jiffies = jiffies;
+ /*
+ * Set the check interval to be 1/5 of the estimated time to
+ * send a single character, and make it at least 1. The check
+ * interval should also be less than the timeout.
+ *
+ * Note: we have to use pretty tight timings here to satisfy
+ * the NIST-PCTS.
+ */
+ char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size;
+ char_time = char_time / 5;
+ if (char_time == 0)
+ char_time = 1;
+ if (timeout && timeout < char_time)
+ char_time = timeout;
+ /*
+ * If the transmitter hasn't cleared in twice the approximate
+ * amount of time to send the entire FIFO, it probably won't
+ * ever clear. This assumes the UART isn't doing flow
+ * control, which is currently the case. Hence, if it ever
+ * takes longer than info->timeout, this is probably due to a
+ * UART bug of some kind. So, we clamp the timeout parameter at
+ * 2*info->timeout.
+ */
+ if (!timeout || timeout > 2 * info->timeout)
+ timeout = 2 * info->timeout;
+#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
+ printk(KERN_DEBUG "In rs_wait_until_sent(%d) check=%lu...",
+ timeout, char_time);
+ printk("jiff=%lu...", jiffies);
+#endif
+ while (!((lsr = inb(info->base + UART_LSR)) & UART_LSR_TEMT)) {
+#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
+ printk("lsr = %d (jiff=%lu)...", lsr, jiffies);
+#endif
+ schedule_timeout_interruptible(char_time);
+ if (signal_pending(current))
+ break;
+ if (timeout && time_after(jiffies, orig_jiffies + timeout))
+ break;
+ }
+ set_current_state(TASK_RUNNING);
+
+#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
+ printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies);
+#endif
+}
+
+
+/*
+ * This routine is called by tty_hangup() when a hangup is signaled.
+ */
+void mxser_hangup(struct tty_struct *tty)
+{
+ struct mxser_struct *info = tty->driver_data;
+
+ mxser_flush_buffer(tty);
+ mxser_shutdown(info);
+ info->event = 0;
+ info->count = 0;
+ info->flags &= ~ASYNC_NORMAL_ACTIVE;
+ info->tty = NULL;
+ wake_up_interruptible(&info->open_wait);
+}
+
+
+/* added by James 03-12-2004. */
+/*
+ * mxser_rs_break() --- routine which turns the break handling on or off
+ */
+static void mxser_rs_break(struct tty_struct *tty, int break_state)
+{
+ struct mxser_struct *info = tty->driver_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->slock, flags);
+ if (break_state == -1)
+ outb(inb(info->base + UART_LCR) | UART_LCR_SBC,
+ info->base + UART_LCR);
+ else
+ outb(inb(info->base + UART_LCR) & ~UART_LCR_SBC,
+ info->base + UART_LCR);
+ spin_unlock_irqrestore(&info->slock, flags);
+}
+
+/* (above) added by James. */
+
+
+/*
+ * This is the serial driver's generic interrupt routine
+ */
+static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ int status, iir, i;
+ struct mxser_struct *info;
+ struct mxser_struct *port;
+ int max, irqbits, bits, msr;
+ int pass_counter = 0;
+ int handled = IRQ_NONE;
+
+ port = NULL;
+ /* spin_lock(&gm_lock); */
+
+ for (i = 0; i < MXSER_BOARDS; i++) {
+ if (dev_id == &(mxvar_table[i * MXSER_PORTS_PER_BOARD])) {
+ port = dev_id;
+ break;
+ }
+ }
+
+ if (i == MXSER_BOARDS)
+ goto irq_stop;
+ if (port == 0)
+ goto irq_stop;
+ max = mxser_numports[mxsercfg[i].board_type - 1];
+ while (1) {
+ irqbits = inb(port->vector) & port->vectormask;
+ if (irqbits == port->vectormask)
+ break;
+
+ handled = IRQ_HANDLED;
+ for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) {
+ if (irqbits == port->vectormask)
+ break;
+ if (bits & irqbits)
+ continue;
+ info = port + i;
+
+ /* following add by Victor Yu. 09-13-2002 */
+ iir = inb(info->base + UART_IIR);
+ if (iir & UART_IIR_NO_INT)
+ continue;
+ iir &= MOXA_MUST_IIR_MASK;
+ if (!info->tty) {
+ status = inb(info->base + UART_LSR);
+ outb(0x27, info->base + UART_FCR);
+ inb(info->base + UART_MSR);
+ continue;
+ }
+ /* above add by Victor Yu. 09-13-2002 */
+ /*
+ if (info->tty->flip.count < TTY_FLIPBUF_SIZE / 4) {
+ info->IER |= MOXA_MUST_RECV_ISR;
+ outb(info->IER, info->base + UART_IER);
+ }
+ */
+
+
+ /* mask by Victor Yu. 09-13-2002
+ if ( !info->tty ||
+ (inb(info->base + UART_IIR) & UART_IIR_NO_INT) )
+ continue;
+ */
+ /* mask by Victor Yu. 09-02-2002
+ status = inb(info->base + UART_LSR) & info->read_status_mask;
+ */
+
+ /* following add by Victor Yu. 09-02-2002 */
+ status = inb(info->base + UART_LSR);
+
+ if (status & UART_LSR_PE)
+ info->err_shadow |= NPPI_NOTIFY_PARITY;
+ if (status & UART_LSR_FE)
+ info->err_shadow |= NPPI_NOTIFY_FRAMING;
+ if (status & UART_LSR_OE)
+ info->err_shadow |= NPPI_NOTIFY_HW_OVERRUN;
+ if (status & UART_LSR_BI)
+ info->err_shadow |= NPPI_NOTIFY_BREAK;
+
+ if (info->IsMoxaMustChipFlag) {
+ /*
+ if ( (status & 0x02) && !(status & 0x01) ) {
+ outb(info->base+UART_FCR, 0x23);
+ continue;
+ }
+ */
+ if (iir == MOXA_MUST_IIR_GDA ||
+ iir == MOXA_MUST_IIR_RDA ||
+ iir == MOXA_MUST_IIR_RTO ||
+ iir == MOXA_MUST_IIR_LSR)
+ mxser_receive_chars(info, &status);
+
+ } else {
+ /* above add by Victor Yu. 09-02-2002 */
+
+ status &= info->read_status_mask;
+ if (status & UART_LSR_DR)
+ mxser_receive_chars(info, &status);
+ }
+ msr = inb(info->base + UART_MSR);
+ if (msr & UART_MSR_ANY_DELTA) {
+ mxser_check_modem_status(info, msr);
+ }
+ /* following add by Victor Yu. 09-13-2002 */
+ if (info->IsMoxaMustChipFlag) {
+ if ((iir == 0x02) && (status & UART_LSR_THRE)) {
+ mxser_transmit_chars(info);
+ }
+ } else {
+ /* above add by Victor Yu. 09-13-2002 */
+
+ if (status & UART_LSR_THRE) {
+/* 8-2-99 by William
+ if ( info->x_char || (info->xmit_cnt > 0) )
+*/
+ mxser_transmit_chars(info);
+ }
+ }
+ }
+ if (pass_counter++ > MXSER_ISR_PASS_LIMIT) {
+ break; /* Prevent infinite loops */
+ }
+ }
+
+ irq_stop:
+ /* spin_unlock(&gm_lock); */
+ return handled;
+}
+
+static void mxser_receive_chars(struct mxser_struct *info, int *status)
+{
+ struct tty_struct *tty = info->tty;
+ unsigned char ch, gdl;
+ int ignored = 0;
+ int cnt = 0;
+ int recv_room;
+ int max = 256;
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->slock, flags);
+
+ recv_room = tty->receive_room;
+ if ((recv_room == 0) && (!info->ldisc_stop_rx)) {
+ /* mxser_throttle(tty); */
+ mxser_stoprx(tty);
+ /* return; */
+ }
+
+ /* following add by Victor Yu. 09-02-2002 */
+ if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) {
+
+ if (*status & UART_LSR_SPECIAL) {
+ goto intr_old;
+ }
+ /* following add by Victor Yu. 02-11-2004 */
+ if (info->IsMoxaMustChipFlag == MOXA_MUST_MU860_HWID &&
+ (*status & MOXA_MUST_LSR_RERR))
+ goto intr_old;
+ /* above add by Victor Yu. 02-14-2004 */
+ if (*status & MOXA_MUST_LSR_RERR)
+ goto intr_old;
+
+ gdl = inb(info->base + MOXA_MUST_GDL_REGISTER);
+
+ /* add by Victor Yu. 02-11-2004 */
+ if (info->IsMoxaMustChipFlag == MOXA_MUST_MU150_HWID)
+ gdl &= MOXA_MUST_GDL_MASK;
+ if (gdl >= recv_room) {
+ if (!info->ldisc_stop_rx) {
+ /* mxser_throttle(tty); */
+ mxser_stoprx(tty);
+ }
+ /* return; */
+ }
+ while (gdl--) {
+ ch = inb(info->base + UART_RX);
+ tty_insert_flip_char(tty, ch, 0);
+ cnt++;
+ /*
+ if ((cnt >= HI_WATER) && (info->stop_rx == 0)) {
+ mxser_stoprx(tty);
+ info->stop_rx = 1;
+ break;
+ } */
+ }
+ goto end_intr;
+ }
+ intr_old:
+ /* above add by Victor Yu. 09-02-2002 */
+
+ do {
+ if (max-- < 0)
+ break;
+ /*
+ if ((cnt >= HI_WATER) && (info->stop_rx == 0)) {
+ mxser_stoprx(tty);
+ info->stop_rx=1;
+ break;
+ }
+ */
+
+ ch = inb(info->base + UART_RX);
+ /* following add by Victor Yu. 09-02-2002 */
+ if (info->IsMoxaMustChipFlag && (*status & UART_LSR_OE) /*&& !(*status&UART_LSR_DR) */ )
+ outb(0x23, info->base + UART_FCR);
+ *status &= info->read_status_mask;
+ /* above add by Victor Yu. 09-02-2002 */
+ if (*status & info->ignore_status_mask) {
+ if (++ignored > 100)
+ break;
+ } else {
+ char flag = 0;
+ if (*status & UART_LSR_SPECIAL) {
+ if (*status & UART_LSR_BI) {
+ flag = TTY_BREAK;
+/* added by casper 1/11/2000 */
+ info->icount.brk++;
+/* */
+ if (info->flags & ASYNC_SAK)
+ do_SAK(tty);
+ } else if (*status & UART_LSR_PE) {
+ flag = TTY_PARITY;
+/* added by casper 1/11/2000 */
+ info->icount.parity++;
+/* */
+ } else if (*status & UART_LSR_FE) {
+ flag = TTY_FRAME;
+/* added by casper 1/11/2000 */
+ info->icount.frame++;
+/* */
+ } else if (*status & UART_LSR_OE) {
+ flag = TTY_OVERRUN;
+/* added by casper 1/11/2000 */
+ info->icount.overrun++;
+/* */
+ }
+ }
+ tty_insert_flip_char(tty, ch, flag);
+ cnt++;
+ if (cnt >= recv_room) {
+ if (!info->ldisc_stop_rx) {
+ /* mxser_throttle(tty); */
+ mxser_stoprx(tty);
+ }
+ break;
+ }
+
+ }
+
+ /* following add by Victor Yu. 09-02-2002 */
+ if (info->IsMoxaMustChipFlag)
+ break;
+ /* above add by Victor Yu. 09-02-2002 */
+
+ /* mask by Victor Yu. 09-02-2002
+ *status = inb(info->base + UART_LSR) & info->read_status_mask;
+ */
+ /* following add by Victor Yu. 09-02-2002 */
+ *status = inb(info->base + UART_LSR);
+ /* above add by Victor Yu. 09-02-2002 */
+ } while (*status & UART_LSR_DR);
+
+end_intr: /* add by Victor Yu. 09-02-2002 */
+ mxvar_log.rxcnt[info->port] += cnt;
+ info->mon_data.rxcnt += cnt;
+ info->mon_data.up_rxcnt += cnt;
+ spin_unlock_irqrestore(&info->slock, flags);
+
+ tty_flip_buffer_push(tty);
+}
+
+static void mxser_transmit_chars(struct mxser_struct *info)
+{
+ int count, cnt;
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->slock, flags);
+
+ if (info->x_char) {
+ outb(info->x_char, info->base + UART_TX);
+ info->x_char = 0;
+ mxvar_log.txcnt[info->port]++;
+ info->mon_data.txcnt++;
+ info->mon_data.up_txcnt++;
+
+/* added by casper 1/11/2000 */
+ info->icount.tx++;
+/* */
+ spin_unlock_irqrestore(&info->slock, flags);
+ return;
+ }
+
+ if (info->xmit_buf == 0) {
+ spin_unlock_irqrestore(&info->slock, flags);
+ return;
+ }
+
+ if ((info->xmit_cnt <= 0) || info->tty->stopped ||
+ (info->tty->hw_stopped &&
+ (info->type != PORT_16550A) &&
+ (!info->IsMoxaMustChipFlag))) {
+ info->IER &= ~UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+ spin_unlock_irqrestore(&info->slock, flags);
+ return;
+ }
+
+ cnt = info->xmit_cnt;
+ count = info->xmit_fifo_size;
+ do {
+ outb(info->xmit_buf[info->xmit_tail++],
+ info->base + UART_TX);
+ info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE - 1);
+ if (--info->xmit_cnt <= 0)
+ break;
+ } while (--count > 0);
+ mxvar_log.txcnt[info->port] += (cnt - info->xmit_cnt);
+
+/* added by James 03-12-2004. */
+ info->mon_data.txcnt += (cnt - info->xmit_cnt);
+ info->mon_data.up_txcnt += (cnt - info->xmit_cnt);
+/* (above) added by James. */
+
+/* added by casper 1/11/2000 */
+ info->icount.tx += (cnt - info->xmit_cnt);
+/* */
+
+ if (info->xmit_cnt < WAKEUP_CHARS) {
+ set_bit(MXSER_EVENT_TXLOW, &info->event);
+ schedule_work(&info->tqueue);
+ }
+ if (info->xmit_cnt <= 0) {
+ info->IER &= ~UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+ }
+ spin_unlock_irqrestore(&info->slock, flags);
+}
+
+static void mxser_check_modem_status(struct mxser_struct *info, int status)
+{
+ /* update input line counters */
+ if (status & UART_MSR_TERI)
+ info->icount.rng++;
+ if (status & UART_MSR_DDSR)
+ info->icount.dsr++;
+ if (status & UART_MSR_DDCD)
+ info->icount.dcd++;
+ if (status & UART_MSR_DCTS)
+ info->icount.cts++;
+ info->mon_data.modem_status = status;
+ wake_up_interruptible(&info->delta_msr_wait);
+
+ if ((info->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
+ if (status & UART_MSR_DCD)
+ wake_up_interruptible(&info->open_wait);
+ schedule_work(&info->tqueue);
+ }
+
+ if (info->flags & ASYNC_CTS_FLOW) {
+ if (info->tty->hw_stopped) {
+ if (status & UART_MSR_CTS) {
+ info->tty->hw_stopped = 0;
+
+ if ((info->type != PORT_16550A) &&
+ (!info->IsMoxaMustChipFlag)) {
+ info->IER |= UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+ }
+ set_bit(MXSER_EVENT_TXLOW, &info->event);
+ schedule_work(&info->tqueue); }
+ } else {
+ if (!(status & UART_MSR_CTS)) {
+ info->tty->hw_stopped = 1;
+ if ((info->type != PORT_16550A) &&
+ (!info->IsMoxaMustChipFlag)) {
+ info->IER &= ~UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+ }
+ }
+ }
+ }
+}
+
+static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, struct mxser_struct *info)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ int retval;
+ int do_clocal = 0;
+ unsigned long flags;
+
+ /*
+ * If non-blocking mode is set, or the port is not enabled,
+ * then make the check up front and then exit.
+ */
+ if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
+ info->flags |= ASYNC_NORMAL_ACTIVE;
+ return 0;
+ }
+
+ if (tty->termios->c_cflag & CLOCAL)
+ do_clocal = 1;
+
+ /*
+ * Block waiting for the carrier detect and the line to become
+ * free (i.e., not in use by the callout). While we are in
+ * this loop, info->count is dropped by one, so that
+ * mxser_close() knows when to free things. We restore it upon
+ * exit, either normal or abnormal.
+ */
+ retval = 0;
+ add_wait_queue(&info->open_wait, &wait);
+
+ spin_lock_irqsave(&info->slock, flags);
+ if (!tty_hung_up_p(filp))
+ info->count--;
+ spin_unlock_irqrestore(&info->slock, flags);
+ info->blocked_open++;
+ while (1) {
+ spin_lock_irqsave(&info->slock, flags);
+ outb(inb(info->base + UART_MCR) |
+ UART_MCR_DTR | UART_MCR_RTS, info->base + UART_MCR);
+ spin_unlock_irqrestore(&info->slock, flags);
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)) {
+ if (info->flags & ASYNC_HUP_NOTIFY)
+ retval = -EAGAIN;
+ else
+ retval = -ERESTARTSYS;
+ break;
+ }
+ if (!(info->flags & ASYNC_CLOSING) &&
+ (do_clocal ||
+ (inb(info->base + UART_MSR) & UART_MSR_DCD)))
+ break;
+ if (signal_pending(current)) {
+ retval = -ERESTARTSYS;
+ break;
+ }
+ schedule();
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&info->open_wait, &wait);
+ if (!tty_hung_up_p(filp))
+ info->count++;
+ info->blocked_open--;
+ if (retval)
+ return retval;
+ info->flags |= ASYNC_NORMAL_ACTIVE;
+ return 0;
+}
+
+static int mxser_startup(struct mxser_struct *info)
+{
+ unsigned long page;
+ unsigned long flags;
+
+ page = __get_free_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ spin_lock_irqsave(&info->slock, flags);
+
+ if (info->flags & ASYNC_INITIALIZED) {
+ free_page(page);
+ spin_unlock_irqrestore(&info->slock, flags);
+ return 0;
+ }
+
+ if (!info->base || !info->type) {
+ if (info->tty)
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+ free_page(page);
+ spin_unlock_irqrestore(&info->slock, flags);
+ return 0;
+ }
+ if (info->xmit_buf)
+ free_page(page);
+ else
+ info->xmit_buf = (unsigned char *) page;
+
+ /*
+ * Clear the FIFO buffers and disable them
+ * (they will be reenabled in mxser_change_speed())
+ */
+ if (info->IsMoxaMustChipFlag)
+ outb((UART_FCR_CLEAR_RCVR |
+ UART_FCR_CLEAR_XMIT |
+ MOXA_MUST_FCR_GDA_MODE_ENABLE), info->base + UART_FCR);
+ else
+ outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
+ info->base + UART_FCR);
+
+ /*
+ * At this point there's no way the LSR could still be 0xFF;
+ * if it is, then bail out, because there's likely no UART
+ * here.
+ */
+ if (inb(info->base + UART_LSR) == 0xff) {
+ spin_unlock_irqrestore(&info->slock, flags);
+ if (capable(CAP_SYS_ADMIN)) {
+ if (info->tty)
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+ return 0;
+ } else
+ return -ENODEV;
+ }
+
+ /*
+ * Clear the interrupt registers.
+ */
+ (void) inb(info->base + UART_LSR);
+ (void) inb(info->base + UART_RX);
+ (void) inb(info->base + UART_IIR);
+ (void) inb(info->base + UART_MSR);
+
+ /*
+ * Now, initialize the UART
+ */
+ outb(UART_LCR_WLEN8, info->base + UART_LCR); /* reset DLAB */
+ info->MCR = UART_MCR_DTR | UART_MCR_RTS;
+ outb(info->MCR, info->base + UART_MCR);
+
+ /*
+ * Finally, enable interrupts
+ */
+ info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
+ /* info->IER = UART_IER_RLSI | UART_IER_RDI; */
+
+ /* following add by Victor Yu. 08-30-2002 */
+ if (info->IsMoxaMustChipFlag)
+ info->IER |= MOXA_MUST_IER_EGDAI;
+ /* above add by Victor Yu. 08-30-2002 */
+ outb(info->IER, info->base + UART_IER); /* enable interrupts */
+
+ /*
+ * And clear the interrupt registers again for luck.
+ */
+ (void) inb(info->base + UART_LSR);
+ (void) inb(info->base + UART_RX);
+ (void) inb(info->base + UART_IIR);
+ (void) inb(info->base + UART_MSR);
+
+ if (info->tty)
+ clear_bit(TTY_IO_ERROR, &info->tty->flags);
+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+
+ /*
+ * and set the speed of the serial port
+ */
+ spin_unlock_irqrestore(&info->slock, flags);
+ mxser_change_speed(info, NULL);
+
+ info->flags |= ASYNC_INITIALIZED;
+ return 0;
+}
+
+/*
+ * This routine will shutdown a serial port; interrupts maybe disabled, and
+ * DTR is dropped if the hangup on close termio flag is on.
+ */
+static void mxser_shutdown(struct mxser_struct *info)
+{
+ unsigned long flags;
+
+ if (!(info->flags & ASYNC_INITIALIZED))
+ return;
+
+ spin_lock_irqsave(&info->slock, flags);
+
+ /*
+ * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
+ * here so the queue might never be waken up
+ */
+ wake_up_interruptible(&info->delta_msr_wait);
+
+ /*
+ * Free the IRQ, if necessary
+ */
+ if (info->xmit_buf) {
+ free_page((unsigned long) info->xmit_buf);
+ info->xmit_buf = NULL;
+ }
+
+ info->IER = 0;
+ outb(0x00, info->base + UART_IER);
+
+ if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
+ info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS);
+ outb(info->MCR, info->base + UART_MCR);
+
+ /* clear Rx/Tx FIFO's */
+ /* following add by Victor Yu. 08-30-2002 */
+ if (info->IsMoxaMustChipFlag)
+ outb((UART_FCR_CLEAR_RCVR |
+ UART_FCR_CLEAR_XMIT |
+ MOXA_MUST_FCR_GDA_MODE_ENABLE), info->base + UART_FCR);
+ else
+ /* above add by Victor Yu. 08-30-2002 */
+ outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
+ info->base + UART_FCR);
+
+ /* read data port to reset things */
+ (void) inb(info->base + UART_RX);
+
+ if (info->tty)
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+
+ info->flags &= ~ASYNC_INITIALIZED;
+
+ /* following add by Victor Yu. 09-23-2002 */
+ if (info->IsMoxaMustChipFlag)
+ SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->base);
+ /* above add by Victor Yu. 09-23-2002 */
+
+ spin_unlock_irqrestore(&info->slock, flags);
+}
+
+/*
+ * This routine is called to set the UART divisor registers to match
+ * the specified baud rate for a serial port.
+ */
+static int mxser_change_speed(struct mxser_struct *info, struct termios *old_termios)
+{
+ unsigned cflag, cval, fcr;
+ int ret = 0;
+ unsigned char status;
+ long baud;
+ unsigned long flags;
+
+ if (!info->tty || !info->tty->termios)
+ return ret;
+ cflag = info->tty->termios->c_cflag;
+ if (!(info->base))
+ return ret;
+
+#ifndef B921600
+#define B921600 (B460800 +1)
+#endif
+ if (mxser_set_baud_method[info->port] == 0) {
+ baud = tty_get_baud_rate(info->tty);
+ mxser_set_baud(info, baud);
+ }
+
+ /* byte size and parity */
+ switch (cflag & CSIZE) {
+ case CS5:
+ cval = 0x00;
+ break;
+ case CS6:
+ cval = 0x01;
+ break;
+ case CS7:
+ cval = 0x02;
+ break;
+ case CS8:
+ cval = 0x03;
+ break;
+ default:
+ cval = 0x00;
+ break; /* too keep GCC shut... */
+ }
+ if (cflag & CSTOPB)
+ cval |= 0x04;
+ if (cflag & PARENB)
+ cval |= UART_LCR_PARITY;
+ if (!(cflag & PARODD))
+ cval |= UART_LCR_EPAR;
+ if (cflag & CMSPAR)
+ cval |= UART_LCR_SPAR;
+
+ if ((info->type == PORT_8250) || (info->type == PORT_16450)) {
+ if (info->IsMoxaMustChipFlag) {
+ fcr = UART_FCR_ENABLE_FIFO;
+ fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
+ SET_MOXA_MUST_FIFO_VALUE(info);
+ } else
+ fcr = 0;
+ } else {
+ fcr = UART_FCR_ENABLE_FIFO;
+ /* following add by Victor Yu. 08-30-2002 */
+ if (info->IsMoxaMustChipFlag) {
+ fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
+ SET_MOXA_MUST_FIFO_VALUE(info);
+ } else {
+ /* above add by Victor Yu. 08-30-2002 */
+ switch (info->rx_trigger) {
+ case 1:
+ fcr |= UART_FCR_TRIGGER_1;
+ break;
+ case 4:
+ fcr |= UART_FCR_TRIGGER_4;
+ break;
+ case 8:
+ fcr |= UART_FCR_TRIGGER_8;
+ break;
+ default:
+ fcr |= UART_FCR_TRIGGER_14;
+ break;
+ }
+ }
+ }
+
+ /* CTS flow control flag and modem status interrupts */
+ info->IER &= ~UART_IER_MSI;
+ info->MCR &= ~UART_MCR_AFE;
+ if (cflag & CRTSCTS) {
+ info->flags |= ASYNC_CTS_FLOW;
+ info->IER |= UART_IER_MSI;
+ if ((info->type == PORT_16550A) || (info->IsMoxaMustChipFlag)) {
+ info->MCR |= UART_MCR_AFE;
+ /* status = mxser_get_msr(info->base, 0, info->port); */
+/*
+ save_flags(flags);
+ cli();
+ status = inb(baseaddr + UART_MSR);
+ restore_flags(flags);
+*/
+ /* mxser_check_modem_status(info, status); */
+ } else {
+ /* status = mxser_get_msr(info->base, 0, info->port); */
+ /* MX_LOCK(&info->slock); */
+ status = inb(info->base + UART_MSR);
+ /* MX_UNLOCK(&info->slock); */
+ if (info->tty->hw_stopped) {
+ if (status & UART_MSR_CTS) {
+ info->tty->hw_stopped = 0;
+ if ((info->type != PORT_16550A) &&
+ (!info->IsMoxaMustChipFlag)) {
+ info->IER |= UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+ }
+ set_bit(MXSER_EVENT_TXLOW, &info->event);
+ schedule_work(&info->tqueue); }
+ } else {
+ if (!(status & UART_MSR_CTS)) {
+ info->tty->hw_stopped = 1;
+ if ((info->type != PORT_16550A) &&
+ (!info->IsMoxaMustChipFlag)) {
+ info->IER &= ~UART_IER_THRI;
+ outb(info->IER, info->base + UART_IER);
+ }
+ }
+ }
+ }
+ } else {
+ info->flags &= ~ASYNC_CTS_FLOW;
+ }
+ outb(info->MCR, info->base + UART_MCR);
+ if (cflag & CLOCAL) {
+ info->flags &= ~ASYNC_CHECK_CD;
+ } else {
+ info->flags |= ASYNC_CHECK_CD;
+ info->IER |= UART_IER_MSI;
+ }
+ outb(info->IER, info->base + UART_IER);
+
+ /*
+ * Set up parity check flag
+ */
+ info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
+ if (I_INPCK(info->tty))
+ info->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
+ if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
+ info->read_status_mask |= UART_LSR_BI;
+
+ info->ignore_status_mask = 0;
+
+ if (I_IGNBRK(info->tty)) {
+ info->ignore_status_mask |= UART_LSR_BI;
+ info->read_status_mask |= UART_LSR_BI;
+ /*
+ * If we're ignore parity and break indicators, ignore
+ * overruns too. (For real raw support).
+ */
+ if (I_IGNPAR(info->tty)) {
+ info->ignore_status_mask |=
+ UART_LSR_OE |
+ UART_LSR_PE |
+ UART_LSR_FE;
+ info->read_status_mask |=
+ UART_LSR_OE |
+ UART_LSR_PE |
+ UART_LSR_FE;
+ }
+ }
+ /* following add by Victor Yu. 09-02-2002 */
+ if (info->IsMoxaMustChipFlag) {
+ spin_lock_irqsave(&info->slock, flags);
+ SET_MOXA_MUST_XON1_VALUE(info->base, START_CHAR(info->tty));
+ SET_MOXA_MUST_XOFF1_VALUE(info->base, STOP_CHAR(info->tty));
+ if (I_IXON(info->tty)) {
+ ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base);
+ } else {
+ DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base);
+ }
+ if (I_IXOFF(info->tty)) {
+ ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->base);
+ } else {
+ DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->base);
+ }
+ /*
+ if ( I_IXANY(info->tty) ) {
+ info->MCR |= MOXA_MUST_MCR_XON_ANY;
+ ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base);
+ } else {
+ info->MCR &= ~MOXA_MUST_MCR_XON_ANY;
+ DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base);
+ }
+ */
+ spin_unlock_irqrestore(&info->slock, flags);
+ }
+ /* above add by Victor Yu. 09-02-2002 */
+
+
+ outb(fcr, info->base + UART_FCR); /* set fcr */
+ outb(cval, info->base + UART_LCR);
+
+ return ret;
+}
+
+
+static int mxser_set_baud(struct mxser_struct *info, long newspd)
+{
+ int quot = 0;
+ unsigned char cval;
+ int ret = 0;
+ unsigned long flags;
+
+ if (!info->tty || !info->tty->termios)
+ return ret;
+
+ if (!(info->base))
+ return ret;
+
+ if (newspd > info->MaxCanSetBaudRate)
+ return 0;
+
+ info->realbaud = newspd;
+ if (newspd == 134) {
+ quot = (2 * info->baud_base / 269);
+ } else if (newspd) {
+ quot = info->baud_base / newspd;
+ if (quot == 0)
+ quot = 1;
+ } else {
+ quot = 0;
+ }
+
+ info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base);
+ info->timeout += HZ / 50; /* Add .02 seconds of slop */
+
+ if (quot) {
+ spin_lock_irqsave(&info->slock, flags);
+ info->MCR |= UART_MCR_DTR;
+ outb(info->MCR, info->base + UART_MCR);
+ spin_unlock_irqrestore(&info->slock, flags);
+ } else {
+ spin_lock_irqsave(&info->slock, flags);
+ info->MCR &= ~UART_MCR_DTR;
+ outb(info->MCR, info->base + UART_MCR);
+ spin_unlock_irqrestore(&info->slock, flags);
+ return ret;
+ }
+
+ cval = inb(info->base + UART_LCR);
+
+ outb(cval | UART_LCR_DLAB, info->base + UART_LCR); /* set DLAB */
+
+ outb(quot & 0xff, info->base + UART_DLL); /* LS of divisor */
+ outb(quot >> 8, info->base + UART_DLM); /* MS of divisor */
+ outb(cval, info->base + UART_LCR); /* reset DLAB */
+
+
+ return ret;
+}
+
+/*
+ * ------------------------------------------------------------
+ * friends of mxser_ioctl()
+ * ------------------------------------------------------------
+ */
+static int mxser_get_serial_info(struct mxser_struct *info, struct serial_struct __user *retinfo)
+{
+ struct serial_struct tmp;
+
+ if (!retinfo)
+ return -EFAULT;
+ memset(&tmp, 0, sizeof(tmp));
+ tmp.type = info->type;
+ tmp.line = info->port;
+ tmp.port = info->base;
+ tmp.irq = info->irq;
+ tmp.flags = info->flags;
+ tmp.baud_base = info->baud_base;
+ tmp.close_delay = info->close_delay;
+ tmp.closing_wait = info->closing_wait;
+ tmp.custom_divisor = info->custom_divisor;
+ tmp.hub6 = 0;
+ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return -EFAULT;
+ return 0;
+}
+
+static int mxser_set_serial_info(struct mxser_struct *info, struct serial_struct __user *new_info)
+{
+ struct serial_struct new_serial;
+ unsigned int flags;
+ int retval = 0;
+
+ if (!new_info || !info->base)
+ return -EFAULT;
+ if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
+ return -EFAULT;
+
+ if ((new_serial.irq != info->irq) ||
+ (new_serial.port != info->base) ||
+ (new_serial.custom_divisor != info->custom_divisor) ||
+ (new_serial.baud_base != info->baud_base))
+ return -EPERM;
+
+ flags = info->flags & ASYNC_SPD_MASK;
+
+ if (!capable(CAP_SYS_ADMIN)) {
+ if ((new_serial.baud_base != info->baud_base) ||
+ (new_serial.close_delay != info->close_delay) ||
+ ((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK)))
+ return -EPERM;
+ info->flags = ((info->flags & ~ASYNC_USR_MASK) |
+ (new_serial.flags & ASYNC_USR_MASK));
+ } else {
+ /*
+ * OK, past this point, all the error checking has been done.
+ * At this point, we start making changes.....
+ */
+ info->flags = ((info->flags & ~ASYNC_FLAGS) |
+ (new_serial.flags & ASYNC_FLAGS));
+ info->close_delay = new_serial.close_delay * HZ / 100;
+ info->closing_wait = new_serial.closing_wait * HZ / 100;
+ info->tty->low_latency =
+ (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ info->tty->low_latency = 0; /* (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */
+ }
+
+ /* added by casper, 3/17/2000, for mouse */
+ info->type = new_serial.type;
+
+ process_txrx_fifo(info);
+
+ if (info->flags & ASYNC_INITIALIZED) {
+ if (flags != (info->flags & ASYNC_SPD_MASK)) {
+ mxser_change_speed(info, NULL);
+ }
+ } else {
+ retval = mxser_startup(info);
+ }
+ return retval;
+}
+
+/*
+ * mxser_get_lsr_info - get line status register info
+ *
+ * Purpose: Let user call ioctl() to get info when the UART physically
+ * is emptied. On bus types like RS485, the transmitter must
+ * release the bus after transmitting. This must be done when
+ * the transmit shift register is empty, not be done when the
+ * transmit holding register is empty. This functionality
+ * allows an RS485 driver to be written in user space.
+ */
+static int mxser_get_lsr_info(struct mxser_struct *info, unsigned int __user *value)
+{
+ unsigned char status;
+ unsigned int result;
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->slock, flags);
+ status = inb(info->base + UART_LSR);
+ spin_unlock_irqrestore(&info->slock, flags);
+ result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
+ return put_user(result, value);
+}
+
+/*
+ * This routine sends a break character out the serial port.
+ */
+static void mxser_send_break(struct mxser_struct *info, int duration)
+{
+ unsigned long flags;
+
+ if (!info->base)
+ return;
+ set_current_state(TASK_INTERRUPTIBLE);
+ spin_lock_irqsave(&info->slock, flags);
+ outb(inb(info->base + UART_LCR) | UART_LCR_SBC,
+ info->base + UART_LCR);
+ spin_unlock_irqrestore(&info->slock, flags);
+ schedule_timeout(duration);
+ spin_lock_irqsave(&info->slock, flags);
+ outb(inb(info->base + UART_LCR) & ~UART_LCR_SBC,
+ info->base + UART_LCR);
+ spin_unlock_irqrestore(&info->slock, flags);
+}
+
+static int mxser_tiocmget(struct tty_struct *tty, struct file *file)
+{
+ struct mxser_struct *info = tty->driver_data;
+ unsigned char control, status;
+ unsigned long flags;
+
+
+ if (tty->index == MXSER_PORTS)
+ return -ENOIOCTLCMD;
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+
+ control = info->MCR;
+
+ spin_lock_irqsave(&info->slock, flags);
+ status = inb(info->base + UART_MSR);
+ if (status & UART_MSR_ANY_DELTA)
+ mxser_check_modem_status(info, status);
+ spin_unlock_irqrestore(&info->slock, flags);
+ return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) |
+ ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) |
+ ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) |
+ ((status & UART_MSR_RI) ? TIOCM_RNG : 0) |
+ ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) |
+ ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
+}
+
+static int mxser_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear)
+{
+ struct mxser_struct *info = tty->driver_data;
+ unsigned long flags;
+
+
+ if (tty->index == MXSER_PORTS)
+ return -ENOIOCTLCMD;
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+
+ spin_lock_irqsave(&info->slock, flags);
+
+ if (set & TIOCM_RTS)
+ info->MCR |= UART_MCR_RTS;
+ if (set & TIOCM_DTR)
+ info->MCR |= UART_MCR_DTR;
+
+ if (clear & TIOCM_RTS)
+ info->MCR &= ~UART_MCR_RTS;
+ if (clear & TIOCM_DTR)
+ info->MCR &= ~UART_MCR_DTR;
+
+ outb(info->MCR, info->base + UART_MCR);
+ spin_unlock_irqrestore(&info->slock, flags);
+ return 0;
+}
+
+
+static int mxser_read_register(int, unsigned short *);
+static int mxser_program_mode(int);
+static void mxser_normal_mode(int);
+
+static int mxser_get_ISA_conf(int cap, struct mxser_hwconf *hwconf)
+{
+ int id, i, bits;
+ unsigned short regs[16], irq;
+ unsigned char scratch, scratch2;
+
+ hwconf->IsMoxaMustChipFlag = MOXA_OTHER_UART;
+
+ id = mxser_read_register(cap, regs);
+ if (id == C168_ASIC_ID) {
+ hwconf->board_type = MXSER_BOARD_C168_ISA;
+ hwconf->ports = 8;
+ } else if (id == C104_ASIC_ID) {
+ hwconf->board_type = MXSER_BOARD_C104_ISA;
+ hwconf->ports = 4;
+ } else if (id == C102_ASIC_ID) {
+ hwconf->board_type = MXSER_BOARD_C102_ISA;
+ hwconf->ports = 2;
+ } else if (id == CI132_ASIC_ID) {
+ hwconf->board_type = MXSER_BOARD_CI132;
+ hwconf->ports = 2;
+ } else if (id == CI134_ASIC_ID) {
+ hwconf->board_type = MXSER_BOARD_CI134;
+ hwconf->ports = 4;
+ } else if (id == CI104J_ASIC_ID) {
+ hwconf->board_type = MXSER_BOARD_CI104J;
+ hwconf->ports = 4;
+ } else
+ return 0;
+
+ irq = 0;
+ if (hwconf->ports == 2) {
+ irq = regs[9] & 0xF000;
+ irq = irq | (irq >> 4);
+ if (irq != (regs[9] & 0xFF00))
+ return MXSER_ERR_IRQ_CONFLIT;
+ } else if (hwconf->ports == 4) {
+ irq = regs[9] & 0xF000;
+ irq = irq | (irq >> 4);
+ irq = irq | (irq >> 8);
+ if (irq != regs[9])
+ return MXSER_ERR_IRQ_CONFLIT;
+ } else if (hwconf->ports == 8) {
+ irq = regs[9] & 0xF000;
+ irq = irq | (irq >> 4);
+ irq = irq | (irq >> 8);
+ if ((irq != regs[9]) || (irq != regs[10]))
+ return MXSER_ERR_IRQ_CONFLIT;
+ }
+
+ if (!irq)
+ return MXSER_ERR_IRQ;
+ hwconf->irq = ((int)(irq & 0xF000) >> 12);
+ for (i = 0; i < 8; i++)
+ hwconf->ioaddr[i] = (int) regs[i + 1] & 0xFFF8;
+ if ((regs[12] & 0x80) == 0)
+ return MXSER_ERR_VECTOR;
+ hwconf->vector = (int)regs[11]; /* interrupt vector */
+ if (id == 1)
+ hwconf->vector_mask = 0x00FF;
+ else
+ hwconf->vector_mask = 0x000F;
+ for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) {
+ if (regs[12] & bits) {
+ hwconf->baud_base[i] = 921600;
+ hwconf->MaxCanSetBaudRate[i] = 921600; /* add by Victor Yu. 09-04-2002 */
+ } else {
+ hwconf->baud_base[i] = 115200;
+ hwconf->MaxCanSetBaudRate[i] = 115200; /* add by Victor Yu. 09-04-2002 */
+ }
+ }
+ scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB);
+ outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR);
+ outb(0, cap + UART_EFR); /* EFR is the same as FCR */
+ outb(scratch2, cap + UART_LCR);
+ outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR);
+ scratch = inb(cap + UART_IIR);
+
+ if (scratch & 0xC0)
+ hwconf->uart_type = PORT_16550A;
+ else
+ hwconf->uart_type = PORT_16450;
+ if (id == 1)
+ hwconf->ports = 8;
+ else
+ hwconf->ports = 4;
+ request_region(hwconf->ioaddr[0], 8 * hwconf->ports, "mxser(IO)");
+ request_region(hwconf->vector, 1, "mxser(vector)");
+ return hwconf->ports;
+}
+
+#define CHIP_SK 0x01 /* Serial Data Clock in Eprom */
+#define CHIP_DO 0x02 /* Serial Data Output in Eprom */
+#define CHIP_CS 0x04 /* Serial Chip Select in Eprom */
+#define CHIP_DI 0x08 /* Serial Data Input in Eprom */
+#define EN_CCMD 0x000 /* Chip's command register */
+#define EN0_RSARLO 0x008 /* Remote start address reg 0 */
+#define EN0_RSARHI 0x009 /* Remote start address reg 1 */
+#define EN0_RCNTLO 0x00A /* Remote byte count reg WR */
+#define EN0_RCNTHI 0x00B /* Remote byte count reg WR */
+#define EN0_DCFG 0x00E /* Data configuration reg WR */
+#define EN0_PORT 0x010 /* Rcv missed frame error counter RD */
+#define ENC_PAGE0 0x000 /* Select page 0 of chip registers */
+#define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */
+static int mxser_read_register(int port, unsigned short *regs)
+{
+ int i, k, value, id;
+ unsigned int j;
+
+ id = mxser_program_mode(port);
+ if (id < 0)
+ return id;
+ for (i = 0; i < 14; i++) {
+ k = (i & 0x3F) | 0x180;
+ for (j = 0x100; j > 0; j >>= 1) {
+ outb(CHIP_CS, port);
+ if (k & j) {
+ outb(CHIP_CS | CHIP_DO, port);
+ outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */
+ } else {
+ outb(CHIP_CS, port);
+ outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */
+ }
+ }
+ (void)inb(port);
+ value = 0;
+ for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) {
+ outb(CHIP_CS, port);
+ outb(CHIP_CS | CHIP_SK, port);
+ if (inb(port) & CHIP_DI)
+ value |= j;
+ }
+ regs[i] = value;
+ outb(0, port);
+ }
+ mxser_normal_mode(port);
+ return id;
+}
+
+static int mxser_program_mode(int port)
+{
+ int id, i, j, n;
+ /* unsigned long flags; */
+
+ spin_lock(&gm_lock);
+ outb(0, port);
+ outb(0, port);
+ outb(0, port);
+ (void)inb(port);
+ (void)inb(port);
+ outb(0, port);
+ (void)inb(port);
+ /* restore_flags(flags); */
+ spin_unlock(&gm_lock);
+
+ id = inb(port + 1) & 0x1F;
+ if ((id != C168_ASIC_ID) &&
+ (id != C104_ASIC_ID) &&
+ (id != C102_ASIC_ID) &&
+ (id != CI132_ASIC_ID) &&
+ (id != CI134_ASIC_ID) &&
+ (id != CI104J_ASIC_ID))
+ return -1;
+ for (i = 0, j = 0; i < 4; i++) {
+ n = inb(port + 2);
+ if (n == 'M') {
+ j = 1;
+ } else if ((j == 1) && (n == 1)) {
+ j = 2;
+ break;
+ } else
+ j = 0;
+ }
+ if (j != 2)
+ id = -2;
+ return id;
+}
+
+static void mxser_normal_mode(int port)
+{
+ int i, n;
+
+ outb(0xA5, port + 1);
+ outb(0x80, port + 3);
+ outb(12, port + 0); /* 9600 bps */
+ outb(0, port + 1);
+ outb(0x03, port + 3); /* 8 data bits */
+ outb(0x13, port + 4); /* loop back mode */
+ for (i = 0; i < 16; i++) {
+ n = inb(port + 5);
+ if ((n & 0x61) == 0x60)
+ break;
+ if ((n & 1) == 1)
+ (void)inb(port);
+ }
+ outb(0x00, port + 4);
+}
+
+module_init(mxser_module_init);
+module_exit(mxser_module_exit);
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff