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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/char/moxa.c
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/char/moxa.c')
-rw-r--r--drivers/char/moxa.c3243
1 files changed, 3243 insertions, 0 deletions
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
new file mode 100644
index 000000000000..7c24fbe831f8
--- /dev/null
+++ b/drivers/char/moxa.c
@@ -0,0 +1,3243 @@
+/*****************************************************************************/
+/*
+ * moxa.c -- MOXA Intellio family multiport serial driver.
+ *
+ * Copyright (C) 1999-2000 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.
+ */
+
+/*
+ * MOXA Intellio Series Driver
+ * for : LINUX
+ * date : 1999/1/7
+ * version : 5.1
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/ioport.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/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/serial.h>
+#include <linux/tty_driver.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+#define MOXA_VERSION "5.1k"
+
+#define MOXAMAJOR 172
+#define MOXACUMAJOR 173
+
+#define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
+#define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
+
+#define MAX_BOARDS 4 /* Don't change this value */
+#define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
+#define MAX_PORTS 128 /* Don't change this value */
+
+/*
+ * Define the Moxa PCI vendor and device IDs.
+ */
+#define MOXA_BUS_TYPE_ISA 0
+#define MOXA_BUS_TYPE_PCI 1
+
+#ifndef PCI_VENDOR_ID_MOXA
+#define PCI_VENDOR_ID_MOXA 0x1393
+#endif
+#ifndef PCI_DEVICE_ID_CP204J
+#define PCI_DEVICE_ID_CP204J 0x2040
+#endif
+#ifndef PCI_DEVICE_ID_C218
+#define PCI_DEVICE_ID_C218 0x2180
+#endif
+#ifndef PCI_DEVICE_ID_C320
+#define PCI_DEVICE_ID_C320 0x3200
+#endif
+
+enum {
+ MOXA_BOARD_C218_PCI = 1,
+ MOXA_BOARD_C218_ISA,
+ MOXA_BOARD_C320_PCI,
+ MOXA_BOARD_C320_ISA,
+ MOXA_BOARD_CP204J,
+};
+
+static char *moxa_brdname[] =
+{
+ "C218 Turbo PCI series",
+ "C218 Turbo ISA series",
+ "C320 Turbo PCI series",
+ "C320 Turbo ISA series",
+ "CP-204J series",
+};
+
+#ifdef CONFIG_PCI
+static struct pci_device_id moxa_pcibrds[] = {
+ { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, MOXA_BOARD_C218_PCI },
+ { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, MOXA_BOARD_C320_PCI },
+ { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, MOXA_BOARD_CP204J },
+ { 0 }
+};
+MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
+#endif /* CONFIG_PCI */
+
+typedef struct _moxa_isa_board_conf {
+ int boardType;
+ int numPorts;
+ unsigned long baseAddr;
+} moxa_isa_board_conf;
+
+static moxa_isa_board_conf moxa_isa_boards[] =
+{
+/* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
+};
+
+typedef struct _moxa_pci_devinfo {
+ ushort busNum;
+ ushort devNum;
+} moxa_pci_devinfo;
+
+typedef struct _moxa_board_conf {
+ int boardType;
+ int numPorts;
+ unsigned long baseAddr;
+ int busType;
+ moxa_pci_devinfo pciInfo;
+} moxa_board_conf;
+
+static moxa_board_conf moxa_boards[MAX_BOARDS];
+static void __iomem *moxaBaseAddr[MAX_BOARDS];
+
+struct moxa_str {
+ int type;
+ int port;
+ int close_delay;
+ unsigned short closing_wait;
+ int count;
+ int blocked_open;
+ long event; /* long req'd for set_bit --RR */
+ int asyncflags;
+ unsigned long statusflags;
+ struct tty_struct *tty;
+ int cflag;
+ wait_queue_head_t open_wait;
+ wait_queue_head_t close_wait;
+ struct work_struct tqueue;
+};
+
+struct mxser_mstatus {
+ tcflag_t cflag;
+ int cts;
+ int dsr;
+ int ri;
+ int dcd;
+};
+
+static struct mxser_mstatus GMStatus[MAX_PORTS];
+
+/* statusflags */
+#define TXSTOPPED 0x1
+#define LOWWAIT 0x2
+#define EMPTYWAIT 0x4
+#define THROTTLE 0x8
+
+/* event */
+#define MOXA_EVENT_HANGUP 1
+
+#define SERIAL_DO_RESTART
+
+
+#define SERIAL_TYPE_NORMAL 1
+
+#define WAKEUP_CHARS 256
+
+#define PORTNO(x) ((x)->index)
+
+static int verbose = 0;
+static int ttymajor = MOXAMAJOR;
+/* Variables for insmod */
+#ifdef MODULE
+static int baseaddr[] = {0, 0, 0, 0};
+static int type[] = {0, 0, 0, 0};
+static int numports[] = {0, 0, 0, 0};
+#endif
+
+MODULE_AUTHOR("William Chen");
+MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
+MODULE_LICENSE("GPL");
+#ifdef MODULE
+module_param_array(type, int, NULL, 0);
+module_param_array(baseaddr, int, NULL, 0);
+module_param_array(numports, int, NULL, 0);
+#endif
+module_param(ttymajor, int, 0);
+module_param(verbose, bool, 0644);
+
+static struct tty_driver *moxaDriver;
+static struct moxa_str moxaChannels[MAX_PORTS];
+static unsigned char *moxaXmitBuff;
+static int moxaTimer_on;
+static struct timer_list moxaTimer;
+static int moxaEmptyTimer_on[MAX_PORTS];
+static struct timer_list moxaEmptyTimer[MAX_PORTS];
+static struct semaphore moxaBuffSem;
+
+/*
+ * static functions:
+ */
+static void do_moxa_softint(void *);
+static int moxa_open(struct tty_struct *, struct file *);
+static void moxa_close(struct tty_struct *, struct file *);
+static int moxa_write(struct tty_struct *, const unsigned char *, int);
+static int moxa_write_room(struct tty_struct *);
+static void moxa_flush_buffer(struct tty_struct *);
+static int moxa_chars_in_buffer(struct tty_struct *);
+static void moxa_flush_chars(struct tty_struct *);
+static void moxa_put_char(struct tty_struct *, unsigned char);
+static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
+static void moxa_throttle(struct tty_struct *);
+static void moxa_unthrottle(struct tty_struct *);
+static void moxa_set_termios(struct tty_struct *, struct termios *);
+static void moxa_stop(struct tty_struct *);
+static void moxa_start(struct tty_struct *);
+static void moxa_hangup(struct tty_struct *);
+static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
+static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear);
+static void moxa_poll(unsigned long);
+static void set_tty_param(struct tty_struct *);
+static int block_till_ready(struct tty_struct *, struct file *,
+ struct moxa_str *);
+static void setup_empty_event(struct tty_struct *);
+static void check_xmit_empty(unsigned long);
+static void shut_down(struct moxa_str *);
+static void receive_data(struct moxa_str *);
+/*
+ * moxa board interface functions:
+ */
+static void MoxaDriverInit(void);
+static int MoxaDriverIoctl(unsigned int, unsigned long, int);
+static int MoxaDriverPoll(void);
+static int MoxaPortsOfCard(int);
+static int MoxaPortIsValid(int);
+static void MoxaPortEnable(int);
+static void MoxaPortDisable(int);
+static long MoxaPortGetMaxBaud(int);
+static long MoxaPortSetBaud(int, long);
+static int MoxaPortSetTermio(int, struct termios *);
+static int MoxaPortGetLineOut(int, int *, int *);
+static void MoxaPortLineCtrl(int, int, int);
+static void MoxaPortFlowCtrl(int, int, int, int, int, int);
+static int MoxaPortLineStatus(int);
+static int MoxaPortDCDChange(int);
+static int MoxaPortDCDON(int);
+static void MoxaPortFlushData(int, int);
+static int MoxaPortWriteData(int, unsigned char *, int);
+static int MoxaPortReadData(int, unsigned char *, int);
+static int MoxaPortTxQueue(int);
+static int MoxaPortRxQueue(int);
+static int MoxaPortTxFree(int);
+static void MoxaPortTxDisable(int);
+static void MoxaPortTxEnable(int);
+static int MoxaPortResetBrkCnt(int);
+static void MoxaPortSendBreak(int, int);
+static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
+static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
+static void MoxaSetFifo(int port, int enable);
+
+static struct tty_operations moxa_ops = {
+ .open = moxa_open,
+ .close = moxa_close,
+ .write = moxa_write,
+ .write_room = moxa_write_room,
+ .flush_buffer = moxa_flush_buffer,
+ .chars_in_buffer = moxa_chars_in_buffer,
+ .flush_chars = moxa_flush_chars,
+ .put_char = moxa_put_char,
+ .ioctl = moxa_ioctl,
+ .throttle = moxa_throttle,
+ .unthrottle = moxa_unthrottle,
+ .set_termios = moxa_set_termios,
+ .stop = moxa_stop,
+ .start = moxa_start,
+ .hangup = moxa_hangup,
+ .tiocmget = moxa_tiocmget,
+ .tiocmset = moxa_tiocmset,
+};
+
+#ifdef CONFIG_PCI
+static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
+{
+ board->baseAddr = pci_resource_start (p, 2);
+ board->boardType = board_type;
+ switch (board_type) {
+ case MOXA_BOARD_C218_ISA:
+ case MOXA_BOARD_C218_PCI:
+ board->numPorts = 8;
+ break;
+
+ case MOXA_BOARD_CP204J:
+ board->numPorts = 4;
+ break;
+ default:
+ board->numPorts = 0;
+ break;
+ }
+ board->busType = MOXA_BUS_TYPE_PCI;
+ board->pciInfo.busNum = p->bus->number;
+ board->pciInfo.devNum = p->devfn >> 3;
+
+ return (0);
+}
+#endif /* CONFIG_PCI */
+
+static int __init moxa_init(void)
+{
+ int i, numBoards;
+ struct moxa_str *ch;
+
+ printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
+ moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
+ if (!moxaDriver)
+ return -ENOMEM;
+
+ init_MUTEX(&moxaBuffSem);
+ moxaDriver->owner = THIS_MODULE;
+ moxaDriver->name = "ttya";
+ moxaDriver->devfs_name = "tts/a";
+ moxaDriver->major = ttymajor;
+ moxaDriver->minor_start = 0;
+ moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
+ moxaDriver->subtype = SERIAL_TYPE_NORMAL;
+ moxaDriver->init_termios = tty_std_termios;
+ moxaDriver->init_termios.c_iflag = 0;
+ moxaDriver->init_termios.c_oflag = 0;
+ moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
+ moxaDriver->init_termios.c_lflag = 0;
+ moxaDriver->flags = TTY_DRIVER_REAL_RAW;
+ tty_set_operations(moxaDriver, &moxa_ops);
+
+ moxaXmitBuff = NULL;
+
+ for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
+ ch->type = PORT_16550A;
+ ch->port = i;
+ INIT_WORK(&ch->tqueue, do_moxa_softint, ch);
+ ch->tty = NULL;
+ ch->close_delay = 5 * HZ / 10;
+ ch->closing_wait = 30 * HZ;
+ ch->count = 0;
+ ch->blocked_open = 0;
+ ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
+ init_waitqueue_head(&ch->open_wait);
+ init_waitqueue_head(&ch->close_wait);
+ }
+
+ for (i = 0; i < MAX_BOARDS; i++) {
+ moxa_boards[i].boardType = 0;
+ moxa_boards[i].numPorts = 0;
+ moxa_boards[i].baseAddr = 0;
+ moxa_boards[i].busType = 0;
+ moxa_boards[i].pciInfo.busNum = 0;
+ moxa_boards[i].pciInfo.devNum = 0;
+ }
+ MoxaDriverInit();
+ printk("Tty devices major number = %d\n", ttymajor);
+
+ if (tty_register_driver(moxaDriver)) {
+ printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
+ put_tty_driver(moxaDriver);
+ return -1;
+ }
+ for (i = 0; i < MAX_PORTS; i++) {
+ init_timer(&moxaEmptyTimer[i]);
+ moxaEmptyTimer[i].function = check_xmit_empty;
+ moxaEmptyTimer[i].data = (unsigned long) & moxaChannels[i];
+ moxaEmptyTimer_on[i] = 0;
+ }
+
+ init_timer(&moxaTimer);
+ moxaTimer.function = moxa_poll;
+ moxaTimer.expires = jiffies + (HZ / 50);
+ moxaTimer_on = 1;
+ add_timer(&moxaTimer);
+
+ /* Find the boards defined in source code */
+ numBoards = 0;
+ for (i = 0; i < MAX_BOARDS; i++) {
+ if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
+ (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
+ moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
+ if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
+ moxa_boards[numBoards].numPorts = 8;
+ else
+ moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
+ moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
+ moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
+ if (verbose)
+ printk("Board %2d: %s board(baseAddr=%lx)\n",
+ numBoards + 1,
+ moxa_brdname[moxa_boards[numBoards].boardType - 1],
+ moxa_boards[numBoards].baseAddr);
+ numBoards++;
+ }
+ }
+ /* Find the boards defined form module args. */
+#ifdef MODULE
+ for (i = 0; i < MAX_BOARDS; i++) {
+ if ((type[i] == MOXA_BOARD_C218_ISA) ||
+ (type[i] == MOXA_BOARD_C320_ISA)) {
+ if (verbose)
+ printk("Board %2d: %s board(baseAddr=%lx)\n",
+ numBoards + 1,
+ moxa_brdname[type[i] - 1],
+ (unsigned long) baseaddr[i]);
+ if (numBoards >= MAX_BOARDS) {
+ if (verbose)
+ printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
+ continue;
+ }
+ moxa_boards[numBoards].boardType = type[i];
+ if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
+ moxa_boards[numBoards].numPorts = 8;
+ else
+ moxa_boards[numBoards].numPorts = numports[i];
+ moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
+ moxa_boards[numBoards].baseAddr = baseaddr[i];
+ numBoards++;
+ }
+ }
+#endif
+ /* Find PCI boards here */
+#ifdef CONFIG_PCI
+ {
+ struct pci_dev *p = NULL;
+ int n = (sizeof(moxa_pcibrds) / sizeof(moxa_pcibrds[0])) - 1;
+ i = 0;
+ while (i < n) {
+ while ((p = pci_find_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
+ {
+ if (pci_enable_device(p))
+ continue;
+ if (numBoards >= MAX_BOARDS) {
+ if (verbose)
+ printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
+ } else {
+ moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
+ &moxa_boards[numBoards]);
+ numBoards++;
+ }
+ }
+ i++;
+ }
+ }
+#endif
+ for (i = 0; i < numBoards; i++) {
+ moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
+ }
+
+ return (0);
+}
+
+static void __exit moxa_exit(void)
+{
+ int i;
+
+ if (verbose)
+ printk("Unloading module moxa ...\n");
+
+ if (moxaTimer_on)
+ del_timer(&moxaTimer);
+
+ for (i = 0; i < MAX_PORTS; i++)
+ if (moxaEmptyTimer_on[i])
+ del_timer(&moxaEmptyTimer[i]);
+
+ if (tty_unregister_driver(moxaDriver))
+ printk("Couldn't unregister MOXA Intellio family serial driver\n");
+ put_tty_driver(moxaDriver);
+ if (verbose)
+ printk("Done\n");
+}
+
+module_init(moxa_init);
+module_exit(moxa_exit);
+
+static void do_moxa_softint(void *private_)
+{
+ struct moxa_str *ch = (struct moxa_str *) private_;
+ struct tty_struct *tty;
+
+ if (ch && (tty = ch->tty)) {
+ if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
+ tty_hangup(tty); /* FIXME: module removal race here - AKPM */
+ wake_up_interruptible(&ch->open_wait);
+ ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
+ }
+ }
+}
+
+static int moxa_open(struct tty_struct *tty, struct file *filp)
+{
+ struct moxa_str *ch;
+ int port;
+ int retval;
+ unsigned long page;
+
+ port = PORTNO(tty);
+ if (port == MAX_PORTS) {
+ return (0);
+ }
+ if (!MoxaPortIsValid(port)) {
+ tty->driver_data = NULL;
+ return (-ENODEV);
+ }
+ down(&moxaBuffSem);
+ if (!moxaXmitBuff) {
+ page = get_zeroed_page(GFP_KERNEL);
+ if (!page) {
+ up(&moxaBuffSem);
+ return (-ENOMEM);
+ }
+ /* This test is guarded by the BuffSem so no longer needed
+ delete me in 2.5 */
+ if (moxaXmitBuff)
+ free_page(page);
+ else
+ moxaXmitBuff = (unsigned char *) page;
+ }
+ up(&moxaBuffSem);
+
+ ch = &moxaChannels[port];
+ ch->count++;
+ tty->driver_data = ch;
+ ch->tty = tty;
+ if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
+ ch->statusflags = 0;
+ set_tty_param(tty);
+ MoxaPortLineCtrl(ch->port, 1, 1);
+ MoxaPortEnable(ch->port);
+ ch->asyncflags |= ASYNC_INITIALIZED;
+ }
+ retval = block_till_ready(tty, filp, ch);
+
+ moxa_unthrottle(tty);
+
+ if (ch->type == PORT_16550A) {
+ MoxaSetFifo(ch->port, 1);
+ } else {
+ MoxaSetFifo(ch->port, 0);
+ }
+
+ return (retval);
+}
+
+static void moxa_close(struct tty_struct *tty, struct file *filp)
+{
+ struct moxa_str *ch;
+ int port;
+
+ port = PORTNO(tty);
+ if (port == MAX_PORTS) {
+ return;
+ }
+ if (!MoxaPortIsValid(port)) {
+#ifdef SERIAL_DEBUG_CLOSE
+ printk("Invalid portno in moxa_close\n");
+#endif
+ tty->driver_data = NULL;
+ return;
+ }
+ if (tty->driver_data == NULL) {
+ return;
+ }
+ if (tty_hung_up_p(filp)) {
+ return;
+ }
+ ch = (struct moxa_str *) tty->driver_data;
+
+ if ((tty->count == 1) && (ch->count != 1)) {
+ printk("moxa_close: bad serial port count; tty->count is 1, "
+ "ch->count is %d\n", ch->count);
+ ch->count = 1;
+ }
+ if (--ch->count < 0) {
+ printk("moxa_close: bad serial port count, device=%s\n",
+ tty->name);
+ ch->count = 0;
+ }
+ if (ch->count) {
+ return;
+ }
+ ch->asyncflags |= ASYNC_CLOSING;
+
+ ch->cflag = tty->termios->c_cflag;
+ if (ch->asyncflags & ASYNC_INITIALIZED) {
+ setup_empty_event(tty);
+ tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
+ moxaEmptyTimer_on[ch->port] = 0;
+ del_timer(&moxaEmptyTimer[ch->port]);
+ }
+ shut_down(ch);
+ MoxaPortFlushData(port, 2);
+
+ if (tty->driver->flush_buffer)
+ tty->driver->flush_buffer(tty);
+ tty_ldisc_flush(tty);
+
+ tty->closing = 0;
+ ch->event = 0;
+ ch->tty = NULL;
+ if (ch->blocked_open) {
+ if (ch->close_delay) {
+ msleep_interruptible(jiffies_to_msecs(ch->close_delay));
+ }
+ wake_up_interruptible(&ch->open_wait);
+ }
+ ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
+ wake_up_interruptible(&ch->close_wait);
+}
+
+static int moxa_write(struct tty_struct *tty,
+ const unsigned char *buf, int count)
+{
+ struct moxa_str *ch;
+ int len, port;
+ unsigned long flags;
+
+ ch = (struct moxa_str *) tty->driver_data;
+ if (ch == NULL)
+ return (0);
+ port = ch->port;
+ save_flags(flags);
+ cli();
+ len = MoxaPortWriteData(port, (unsigned char *) buf, count);
+ restore_flags(flags);
+
+ /*********************************************
+ if ( !(ch->statusflags & LOWWAIT) &&
+ ((len != count) || (MoxaPortTxFree(port) <= 100)) )
+ ************************************************/
+ ch->statusflags |= LOWWAIT;
+ return (len);
+}
+
+static int moxa_write_room(struct tty_struct *tty)
+{
+ struct moxa_str *ch;
+
+ if (tty->stopped)
+ return (0);
+ ch = (struct moxa_str *) tty->driver_data;
+ if (ch == NULL)
+ return (0);
+ return (MoxaPortTxFree(ch->port));
+}
+
+static void moxa_flush_buffer(struct tty_struct *tty)
+{
+ struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
+
+ if (ch == NULL)
+ return;
+ MoxaPortFlushData(ch->port, 1);
+ tty_wakeup(tty);
+}
+
+static int moxa_chars_in_buffer(struct tty_struct *tty)
+{
+ int chars;
+ struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
+
+ /*
+ * Sigh...I have to check if driver_data is NULL here, because
+ * if an open() fails, the TTY subsystem eventually calls
+ * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
+ * routine. And since the open() failed, we return 0 here. TDJ
+ */
+ if (ch == NULL)
+ return (0);
+ chars = MoxaPortTxQueue(ch->port);
+ if (chars) {
+ /*
+ * Make it possible to wakeup anything waiting for output
+ * in tty_ioctl.c, etc.
+ */
+ if (!(ch->statusflags & EMPTYWAIT))
+ setup_empty_event(tty);
+ }
+ return (chars);
+}
+
+static void moxa_flush_chars(struct tty_struct *tty)
+{
+ /*
+ * Don't think I need this, because this is called to empty the TX
+ * buffer for the 16450, 16550, etc.
+ */
+}
+
+static void moxa_put_char(struct tty_struct *tty, unsigned char c)
+{
+ struct moxa_str *ch;
+ int port;
+ unsigned long flags;
+
+ ch = (struct moxa_str *) tty->driver_data;
+ if (ch == NULL)
+ return;
+ port = ch->port;
+ save_flags(flags);
+ cli();
+ moxaXmitBuff[0] = c;
+ MoxaPortWriteData(port, moxaXmitBuff, 1);
+ restore_flags(flags);
+ /************************************************
+ if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
+ *************************************************/
+ ch->statusflags |= LOWWAIT;
+}
+
+static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
+{
+ struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
+ int port;
+ int flag = 0, dtr, rts;
+
+ port = PORTNO(tty);
+ if ((port != MAX_PORTS) && (!ch))
+ return (-EINVAL);
+
+ MoxaPortGetLineOut(ch->port, &dtr, &rts);
+ if (dtr)
+ flag |= TIOCM_DTR;
+ if (rts)
+ flag |= TIOCM_RTS;
+ dtr = MoxaPortLineStatus(ch->port);
+ if (dtr & 1)
+ flag |= TIOCM_CTS;
+ if (dtr & 2)
+ flag |= TIOCM_DSR;
+ if (dtr & 4)
+ flag |= TIOCM_CD;
+ return flag;
+}
+
+static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear)
+{
+ struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
+ int port;
+ int dtr, rts;
+
+ port = PORTNO(tty);
+ if ((port != MAX_PORTS) && (!ch))
+ return (-EINVAL);
+
+ MoxaPortGetLineOut(ch->port, &dtr, &rts);
+ if (set & TIOCM_RTS)
+ rts = 1;
+ if (set & TIOCM_DTR)
+ dtr = 1;
+ if (clear & TIOCM_RTS)
+ rts = 0;
+ if (clear & TIOCM_DTR)
+ dtr = 0;
+ MoxaPortLineCtrl(ch->port, dtr, rts);
+ return 0;
+}
+
+static int moxa_ioctl(struct tty_struct *tty, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
+ register int port;
+ void __user *argp = (void __user *)arg;
+ int retval;
+
+ port = PORTNO(tty);
+ if ((port != MAX_PORTS) && (!ch))
+ return (-EINVAL);
+
+ switch (cmd) {
+ case TCSBRK: /* SVID version: non-zero arg --> no break */
+ retval = tty_check_change(tty);
+ if (retval)
+ return (retval);
+ setup_empty_event(tty);
+ tty_wait_until_sent(tty, 0);
+ if (!arg)
+ MoxaPortSendBreak(ch->port, 0);
+ return (0);
+ case TCSBRKP: /* support for POSIX tcsendbreak() */
+ retval = tty_check_change(tty);
+ if (retval)
+ return (retval);
+ setup_empty_event(tty);
+ tty_wait_until_sent(tty, 0);
+ MoxaPortSendBreak(ch->port, arg);
+ return (0);
+ case TIOCGSOFTCAR:
+ return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
+ case TIOCSSOFTCAR:
+ if(get_user(retval, (unsigned long __user *) argp))
+ return -EFAULT;
+ arg = retval;
+ tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
+ (arg ? CLOCAL : 0));
+ if (C_CLOCAL(tty))
+ ch->asyncflags &= ~ASYNC_CHECK_CD;
+ else
+ ch->asyncflags |= ASYNC_CHECK_CD;
+ return (0);
+ case TIOCGSERIAL:
+ return moxa_get_serial_info(ch, argp);
+
+ case TIOCSSERIAL:
+ return moxa_set_serial_info(ch, argp);
+ default:
+ retval = MoxaDriverIoctl(cmd, arg, port);
+ }
+ return (retval);
+}
+
+static void moxa_throttle(struct tty_struct *tty)
+{
+ struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
+
+ ch->statusflags |= THROTTLE;
+}
+
+static void moxa_unthrottle(struct tty_struct *tty)
+{
+ struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
+
+ ch->statusflags &= ~THROTTLE;
+}
+
+static void moxa_set_termios(struct tty_struct *tty,
+ struct termios *old_termios)
+{
+ struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
+
+ if (ch == NULL)
+ return;
+ set_tty_param(tty);
+ if (!(old_termios->c_cflag & CLOCAL) &&
+ (tty->termios->c_cflag & CLOCAL))
+ wake_up_interruptible(&ch->open_wait);
+}
+
+static void moxa_stop(struct tty_struct *tty)
+{
+ struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
+
+ if (ch == NULL)
+ return;
+ MoxaPortTxDisable(ch->port);
+ ch->statusflags |= TXSTOPPED;
+}
+
+
+static void moxa_start(struct tty_struct *tty)
+{
+ struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
+
+ if (ch == NULL)
+ return;
+
+ if (!(ch->statusflags & TXSTOPPED))
+ return;
+
+ MoxaPortTxEnable(ch->port);
+ ch->statusflags &= ~TXSTOPPED;
+}
+
+static void moxa_hangup(struct tty_struct *tty)
+{
+ struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
+
+ moxa_flush_buffer(tty);
+ shut_down(ch);
+ ch->event = 0;
+ ch->count = 0;
+ ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
+ ch->tty = NULL;
+ wake_up_interruptible(&ch->open_wait);
+}
+
+static void moxa_poll(unsigned long ignored)
+{
+ register int card;
+ struct moxa_str *ch;
+ struct tty_struct *tp;
+ int i, ports;
+
+ moxaTimer_on = 0;
+ del_timer(&moxaTimer);
+
+ if (MoxaDriverPoll() < 0) {
+ moxaTimer.function = moxa_poll;
+ moxaTimer.expires = jiffies + (HZ / 50);
+ moxaTimer_on = 1;
+ add_timer(&moxaTimer);
+ return;
+ }
+ for (card = 0; card < MAX_BOARDS; card++) {
+ if ((ports = MoxaPortsOfCard(card)) <= 0)
+ continue;
+ ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
+ for (i = 0; i < ports; i++, ch++) {
+ if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
+ continue;
+ if (!(ch->statusflags & THROTTLE) &&
+ (MoxaPortRxQueue(ch->port) > 0))
+ receive_data(ch);
+ if ((tp = ch->tty) == 0)
+ continue;
+ if (ch->statusflags & LOWWAIT) {
+ if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
+ if (!tp->stopped) {
+ ch->statusflags &= ~LOWWAIT;
+ tty_wakeup(tp);
+ }
+ }
+ }
+ if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
+ tty_insert_flip_char(tp, 0, TTY_BREAK);
+ tty_schedule_flip(tp);
+ }
+ if (MoxaPortDCDChange(ch->port)) {
+ if (ch->asyncflags & ASYNC_CHECK_CD) {
+ if (MoxaPortDCDON(ch->port))
+ wake_up_interruptible(&ch->open_wait);
+ else {
+ set_bit(MOXA_EVENT_HANGUP, &ch->event);
+ schedule_work(&ch->tqueue);
+ }
+ }
+ }
+ }
+ }
+
+ moxaTimer.function = moxa_poll;
+ moxaTimer.expires = jiffies + (HZ / 50);
+ moxaTimer_on = 1;
+ add_timer(&moxaTimer);
+}
+
+/******************************************************************************/
+
+static void set_tty_param(struct tty_struct *tty)
+{
+ register struct termios *ts;
+ struct moxa_str *ch;
+ int rts, cts, txflow, rxflow, xany;
+
+ ch = (struct moxa_str *) tty->driver_data;
+ ts = tty->termios;
+ if (ts->c_cflag & CLOCAL)
+ ch->asyncflags &= ~ASYNC_CHECK_CD;
+ else
+ ch->asyncflags |= ASYNC_CHECK_CD;
+ rts = cts = txflow = rxflow = xany = 0;
+ if (ts->c_cflag & CRTSCTS)
+ rts = cts = 1;
+ if (ts->c_iflag & IXON)
+ txflow = 1;
+ if (ts->c_iflag & IXOFF)
+ rxflow = 1;
+ if (ts->c_iflag & IXANY)
+ xany = 1;
+ MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
+ MoxaPortSetTermio(ch->port, ts);
+}
+
+static int block_till_ready(struct tty_struct *tty, struct file *filp,
+ struct moxa_str *ch)
+{
+ DECLARE_WAITQUEUE(wait,current);
+ unsigned long flags;
+ int retval;
+ int do_clocal = C_CLOCAL(tty);
+
+ /*
+ * If the device is in the middle of being closed, then block
+ * until it's done, and then try again.
+ */
+ if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
+ if (ch->asyncflags & ASYNC_CLOSING)
+ interruptible_sleep_on(&ch->close_wait);
+#ifdef SERIAL_DO_RESTART
+ if (ch->asyncflags & ASYNC_HUP_NOTIFY)
+ return (-EAGAIN);
+ else
+ return (-ERESTARTSYS);
+#else
+ return (-EAGAIN);
+#endif
+ }
+ /*
+ * If non-blocking mode is set, then make the check up front
+ * and then exit.
+ */
+ if (filp->f_flags & O_NONBLOCK) {
+ ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
+ return (0);
+ }
+ /*
+ * Block waiting for the carrier detect and the line to become free
+ */
+ retval = 0;
+ add_wait_queue(&ch->open_wait, &wait);
+#ifdef SERIAL_DEBUG_OPEN
+ printk("block_til_ready before block: ttys%d, count = %d\n",
+ ch->line, ch->count);
+#endif
+ save_flags(flags);
+ cli();
+ if (!tty_hung_up_p(filp))
+ ch->count--;
+ restore_flags(flags);
+ ch->blocked_open++;
+ while (1) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (tty_hung_up_p(filp) ||
+ !(ch->asyncflags & ASYNC_INITIALIZED)) {
+#ifdef SERIAL_DO_RESTART
+ if (ch->asyncflags & ASYNC_HUP_NOTIFY)
+ retval = -EAGAIN;
+ else
+ retval = -ERESTARTSYS;
+#else
+ retval = -EAGAIN;
+#endif
+ break;
+ }
+ if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
+ MoxaPortDCDON(ch->port)))
+ break;
+
+ if (signal_pending(current)) {
+ retval = -ERESTARTSYS;
+ break;
+ }
+ schedule();
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&ch->open_wait, &wait);
+ if (!tty_hung_up_p(filp))
+ ch->count++;
+ ch->blocked_open--;
+#ifdef SERIAL_DEBUG_OPEN
+ printk("block_til_ready after blocking: ttys%d, count = %d\n",
+ ch->line, ch->count);
+#endif
+ if (retval)
+ return (retval);
+ ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
+ return (0);
+}
+
+static void setup_empty_event(struct tty_struct *tty)
+{
+ struct moxa_str *ch = tty->driver_data;
+ unsigned long flags;
+
+ save_flags(flags);
+ cli();
+ ch->statusflags |= EMPTYWAIT;
+ moxaEmptyTimer_on[ch->port] = 0;
+ del_timer(&moxaEmptyTimer[ch->port]);
+ moxaEmptyTimer[ch->port].expires = jiffies + HZ;
+ moxaEmptyTimer_on[ch->port] = 1;
+ add_timer(&moxaEmptyTimer[ch->port]);
+ restore_flags(flags);
+}
+
+static void check_xmit_empty(unsigned long data)
+{
+ struct moxa_str *ch;
+
+ ch = (struct moxa_str *) data;
+ moxaEmptyTimer_on[ch->port] = 0;
+ del_timer(&moxaEmptyTimer[ch->port]);
+ if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
+ if (MoxaPortTxQueue(ch->port) == 0) {
+ ch->statusflags &= ~EMPTYWAIT;
+ tty_wakeup(ch->tty);
+ return;
+ }
+ moxaEmptyTimer[ch->port].expires = jiffies + HZ;
+ moxaEmptyTimer_on[ch->port] = 1;
+ add_timer(&moxaEmptyTimer[ch->port]);
+ } else
+ ch->statusflags &= ~EMPTYWAIT;
+}
+
+static void shut_down(struct moxa_str *ch)
+{
+ struct tty_struct *tp;
+
+ if (!(ch->asyncflags & ASYNC_INITIALIZED))
+ return;
+
+ tp = ch->tty;
+
+ MoxaPortDisable(ch->port);
+
+ /*
+ * If we're a modem control device and HUPCL is on, drop RTS & DTR.
+ */
+ if (tp->termios->c_cflag & HUPCL)
+ MoxaPortLineCtrl(ch->port, 0, 0);
+
+ ch->asyncflags &= ~ASYNC_INITIALIZED;
+}
+
+static void receive_data(struct moxa_str *ch)
+{
+ struct tty_struct *tp;
+ struct termios *ts;
+ int i, count, rc, space;
+ unsigned char *charptr, *flagptr;
+ unsigned long flags;
+
+ ts = NULL;
+ tp = ch->tty;
+ if (tp)
+ ts = tp->termios;
+ /**************************************************
+ if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
+ *****************************************************/
+ if (!tp || !ts) {
+ MoxaPortFlushData(ch->port, 0);
+ return;
+ }
+ space = TTY_FLIPBUF_SIZE - tp->flip.count;
+ if (space <= 0)
+ return;
+ charptr = tp->flip.char_buf_ptr;
+ flagptr = tp->flip.flag_buf_ptr;
+ rc = tp->flip.count;
+ save_flags(flags);
+ cli();
+ count = MoxaPortReadData(ch->port, charptr, space);
+ restore_flags(flags);
+ for (i = 0; i < count; i++)
+ *flagptr++ = 0;
+ charptr += count;
+ rc += count;
+ tp->flip.count = rc;
+ tp->flip.char_buf_ptr = charptr;
+ tp->flip.flag_buf_ptr = flagptr;
+ tty_schedule_flip(ch->tty);
+}
+
+#define Magic_code 0x404
+
+/*
+ * System Configuration
+ */
+/*
+ * for C218 BIOS initialization
+ */
+#define C218_ConfBase 0x800
+#define C218_status (C218_ConfBase + 0) /* BIOS running status */
+#define C218_diag (C218_ConfBase + 2) /* diagnostic status */
+#define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
+#define C218DLoad_len (C218_ConfBase + 6) /* WORD */
+#define C218check_sum (C218_ConfBase + 8) /* BYTE */
+#define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
+#define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
+#define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
+#define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
+#define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
+
+#define C218_LoadBuf 0x0F00
+#define C218_KeyCode 0x218
+#define CP204J_KeyCode 0x204
+
+/*
+ * for C320 BIOS initialization
+ */
+#define C320_ConfBase 0x800
+#define C320_LoadBuf 0x0f00
+#define STS_init 0x05 /* for C320_status */
+
+#define C320_status C320_ConfBase + 0 /* BIOS running status */
+#define C320_diag C320_ConfBase + 2 /* diagnostic status */
+#define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
+#define C320DLoad_len C320_ConfBase + 6 /* WORD */
+#define C320check_sum C320_ConfBase + 8 /* WORD */
+#define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
+#define C320bapi_len C320_ConfBase + 0x0c /* WORD */
+#define C320UART_no C320_ConfBase + 0x0e /* WORD */
+
+#define C320_KeyCode 0x320
+
+#define FixPage_addr 0x0000 /* starting addr of static page */
+#define DynPage_addr 0x2000 /* starting addr of dynamic page */
+#define C218_start 0x3000 /* starting addr of C218 BIOS prg */
+#define Control_reg 0x1ff0 /* select page and reset control */
+#define HW_reset 0x80
+
+/*
+ * Function Codes
+ */
+#define FC_CardReset 0x80
+#define FC_ChannelReset 1 /* C320 firmware not supported */
+#define FC_EnableCH 2
+#define FC_DisableCH 3
+#define FC_SetParam 4
+#define FC_SetMode 5
+#define FC_SetRate 6
+#define FC_LineControl 7
+#define FC_LineStatus 8
+#define FC_XmitControl 9
+#define FC_FlushQueue 10
+#define FC_SendBreak 11
+#define FC_StopBreak 12
+#define FC_LoopbackON 13
+#define FC_LoopbackOFF 14
+#define FC_ClrIrqTable 15
+#define FC_SendXon 16
+#define FC_SetTermIrq 17 /* C320 firmware not supported */
+#define FC_SetCntIrq 18 /* C320 firmware not supported */
+#define FC_SetBreakIrq 19
+#define FC_SetLineIrq 20
+#define FC_SetFlowCtl 21
+#define FC_GenIrq 22
+#define FC_InCD180 23
+#define FC_OutCD180 24
+#define FC_InUARTreg 23
+#define FC_OutUARTreg 24
+#define FC_SetXonXoff 25
+#define FC_OutCD180CCR 26
+#define FC_ExtIQueue 27
+#define FC_ExtOQueue 28
+#define FC_ClrLineIrq 29
+#define FC_HWFlowCtl 30
+#define FC_GetClockRate 35
+#define FC_SetBaud 36
+#define FC_SetDataMode 41
+#define FC_GetCCSR 43
+#define FC_GetDataError 45
+#define FC_RxControl 50
+#define FC_ImmSend 51
+#define FC_SetXonState 52
+#define FC_SetXoffState 53
+#define FC_SetRxFIFOTrig 54
+#define FC_SetTxFIFOCnt 55
+#define FC_UnixRate 56
+#define FC_UnixResetTimer 57
+
+#define RxFIFOTrig1 0
+#define RxFIFOTrig4 1
+#define RxFIFOTrig8 2
+#define RxFIFOTrig14 3
+
+/*
+ * Dual-Ported RAM
+ */
+#define DRAM_global 0
+#define INT_data (DRAM_global + 0)
+#define Config_base (DRAM_global + 0x108)
+
+#define IRQindex (INT_data + 0)
+#define IRQpending (INT_data + 4)
+#define IRQtable (INT_data + 8)
+
+/*
+ * Interrupt Status
+ */
+#define IntrRx 0x01 /* receiver data O.K. */
+#define IntrTx 0x02 /* transmit buffer empty */
+#define IntrFunc 0x04 /* function complete */
+#define IntrBreak 0x08 /* received break */
+#define IntrLine 0x10 /* line status change
+ for transmitter */
+#define IntrIntr 0x20 /* received INTR code */
+#define IntrQuit 0x40 /* received QUIT code */
+#define IntrEOF 0x80 /* received EOF code */
+
+#define IntrRxTrigger 0x100 /* rx data count reach tigger value */
+#define IntrTxTrigger 0x200 /* tx data count below trigger value */
+
+#define Magic_no (Config_base + 0)
+#define Card_model_no (Config_base + 2)
+#define Total_ports (Config_base + 4)
+#define Module_cnt (Config_base + 8)
+#define Module_no (Config_base + 10)
+#define Timer_10ms (Config_base + 14)
+#define Disable_IRQ (Config_base + 20)
+#define TMS320_PORT1 (Config_base + 22)
+#define TMS320_PORT2 (Config_base + 24)
+#define TMS320_CLOCK (Config_base + 26)
+
+/*
+ * DATA BUFFER in DRAM
+ */
+#define Extern_table 0x400 /* Base address of the external table
+ (24 words * 64) total 3K bytes
+ (24 words * 128) total 6K bytes */
+#define Extern_size 0x60 /* 96 bytes */
+#define RXrptr 0x00 /* read pointer for RX buffer */
+#define RXwptr 0x02 /* write pointer for RX buffer */
+#define TXrptr 0x04 /* read pointer for TX buffer */
+#define TXwptr 0x06 /* write pointer for TX buffer */
+#define HostStat 0x08 /* IRQ flag and general flag */
+#define FlagStat 0x0A
+#define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
+ /* x x x x | | | | */
+ /* | | | + CTS flow */
+ /* | | +--- RTS flow */
+ /* | +------ TX Xon/Xoff */
+ /* +--------- RX Xon/Xoff */
+#define Break_cnt 0x0E /* received break count */
+#define CD180TXirq 0x10 /* if non-0: enable TX irq */
+#define RX_mask 0x12
+#define TX_mask 0x14
+#define Ofs_rxb 0x16
+#define Ofs_txb 0x18
+#define Page_rxb 0x1A
+#define Page_txb 0x1C
+#define EndPage_rxb 0x1E
+#define EndPage_txb 0x20
+#define Data_error 0x22
+#define RxTrigger 0x28
+#define TxTrigger 0x2a
+
+#define rRXwptr 0x34
+#define Low_water 0x36
+
+#define FuncCode 0x40
+#define FuncArg 0x42
+#define FuncArg1 0x44
+
+#define C218rx_size 0x2000 /* 8K bytes */
+#define C218tx_size 0x8000 /* 32K bytes */
+
+#define C218rx_mask (C218rx_size - 1)
+#define C218tx_mask (C218tx_size - 1)
+
+#define C320p8rx_size 0x2000
+#define C320p8tx_size 0x8000
+#define C320p8rx_mask (C320p8rx_size - 1)
+#define C320p8tx_mask (C320p8tx_size - 1)
+
+#define C320p16rx_size 0x2000
+#define C320p16tx_size 0x4000
+#define C320p16rx_mask (C320p16rx_size - 1)
+#define C320p16tx_mask (C320p16tx_size - 1)
+
+#define C320p24rx_size 0x2000
+#define C320p24tx_size 0x2000
+#define C320p24rx_mask (C320p24rx_size - 1)
+#define C320p24tx_mask (C320p24tx_size - 1)
+
+#define C320p32rx_size 0x1000
+#define C320p32tx_size 0x1000
+#define C320p32rx_mask (C320p32rx_size - 1)
+#define C320p32tx_mask (C320p32tx_size - 1)
+
+#define Page_size 0x2000
+#define Page_mask (Page_size - 1)
+#define C218rx_spage 3
+#define C218tx_spage 4
+#define C218rx_pageno 1
+#define C218tx_pageno 4
+#define C218buf_pageno 5
+
+#define C320p8rx_spage 3
+#define C320p8tx_spage 4
+#define C320p8rx_pgno 1
+#define C320p8tx_pgno 4
+#define C320p8buf_pgno 5
+
+#define C320p16rx_spage 3
+#define C320p16tx_spage 4
+#define C320p16rx_pgno 1
+#define C320p16tx_pgno 2
+#define C320p16buf_pgno 3
+
+#define C320p24rx_spage 3
+#define C320p24tx_spage 4
+#define C320p24rx_pgno 1
+#define C320p24tx_pgno 1
+#define C320p24buf_pgno 2
+
+#define C320p32rx_spage 3
+#define C320p32tx_ofs C320p32rx_size
+#define C320p32tx_spage 3
+#define C320p32buf_pgno 1
+
+/*
+ * Host Status
+ */
+#define WakeupRx 0x01
+#define WakeupTx 0x02
+#define WakeupBreak 0x08
+#define WakeupLine 0x10
+#define WakeupIntr 0x20
+#define WakeupQuit 0x40
+#define WakeupEOF 0x80 /* used in VTIME control */
+#define WakeupRxTrigger 0x100
+#define WakeupTxTrigger 0x200
+/*
+ * Flag status
+ */
+#define Rx_over 0x01
+#define Xoff_state 0x02
+#define Tx_flowOff 0x04
+#define Tx_enable 0x08
+#define CTS_state 0x10
+#define DSR_state 0x20
+#define DCD_state 0x80
+/*
+ * FlowControl
+ */
+#define CTS_FlowCtl 1
+#define RTS_FlowCtl 2
+#define Tx_FlowCtl 4
+#define Rx_FlowCtl 8
+#define IXM_IXANY 0x10
+
+#define LowWater 128
+
+#define DTR_ON 1
+#define RTS_ON 2
+#define CTS_ON 1
+#define DSR_ON 2
+#define DCD_ON 8
+
+/* mode definition */
+#define MX_CS8 0x03
+#define MX_CS7 0x02
+#define MX_CS6 0x01
+#define MX_CS5 0x00
+
+#define MX_STOP1 0x00
+#define MX_STOP15 0x04
+#define MX_STOP2 0x08
+
+#define MX_PARNONE 0x00
+#define MX_PAREVEN 0x40
+#define MX_PARODD 0xC0
+
+/*
+ * Query
+ */
+#define QueryPort MAX_PORTS
+
+
+
+struct mon_str {
+ int tick;
+ int rxcnt[MAX_PORTS];
+ int txcnt[MAX_PORTS];
+};
+typedef struct mon_str mon_st;
+
+#define DCD_changed 0x01
+#define DCD_oldstate 0x80
+
+static unsigned char moxaBuff[10240];
+static void __iomem *moxaIntNdx[MAX_BOARDS];
+static void __iomem *moxaIntPend[MAX_BOARDS];
+static void __iomem *moxaIntTable[MAX_BOARDS];
+static char moxaChkPort[MAX_PORTS];
+static char moxaLineCtrl[MAX_PORTS];
+static void __iomem *moxaTableAddr[MAX_PORTS];
+static long moxaCurBaud[MAX_PORTS];
+static char moxaDCDState[MAX_PORTS];
+static char moxaLowChkFlag[MAX_PORTS];
+static int moxaLowWaterChk;
+static int moxaCard;
+static mon_st moxaLog;
+static int moxaFuncTout;
+static ushort moxaBreakCnt[MAX_PORTS];
+
+static void moxadelay(int);
+static void moxafunc(void __iomem *, int, ushort);
+static void wait_finish(void __iomem *);
+static void low_water_check(void __iomem *);
+static int moxaloadbios(int, unsigned char __user *, int);
+static int moxafindcard(int);
+static int moxaload320b(int, unsigned char __user *, int);
+static int moxaloadcode(int, unsigned char __user *, int);
+static int moxaloadc218(int, void __iomem *, int);
+static int moxaloadc320(int, void __iomem *, int, int *);
+
+/*****************************************************************************
+ * Driver level functions: *
+ * 1. MoxaDriverInit(void); *
+ * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
+ * 3. MoxaDriverPoll(void); *
+ *****************************************************************************/
+void MoxaDriverInit(void)
+{
+ int i;
+
+ moxaFuncTout = HZ / 2; /* 500 mini-seconds */
+ moxaCard = 0;
+ moxaLog.tick = 0;
+ moxaLowWaterChk = 0;
+ for (i = 0; i < MAX_PORTS; i++) {
+ moxaChkPort[i] = 0;
+ moxaLowChkFlag[i] = 0;
+ moxaLineCtrl[i] = 0;
+ moxaLog.rxcnt[i] = 0;
+ moxaLog.txcnt[i] = 0;
+ }
+}
+
+#define MOXA 0x400
+#define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
+#define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
+#define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
+#define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
+#define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
+#define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
+#define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
+#define MOXA_GETDATACOUNT (MOXA + 23)
+#define MOXA_GET_IOQUEUE (MOXA + 27)
+#define MOXA_FLUSH_QUEUE (MOXA + 28)
+#define MOXA_GET_CONF (MOXA + 35) /* configuration */
+#define MOXA_GET_MAJOR (MOXA + 63)
+#define MOXA_GET_CUMAJOR (MOXA + 64)
+#define MOXA_GETMSTATUS (MOXA + 65)
+
+
+struct moxaq_str {
+ int inq;
+ int outq;
+};
+
+struct dl_str {
+ char __user *buf;
+ int len;
+ int cardno;
+};
+
+static struct moxaq_str temp_queue[MAX_PORTS];
+static struct dl_str dltmp;
+
+void MoxaPortFlushData(int port, int mode)
+{
+ void __iomem *ofsAddr;
+ if ((mode < 0) || (mode > 2))
+ return;
+ ofsAddr = moxaTableAddr[port];
+ moxafunc(ofsAddr, FC_FlushQueue, mode);
+ if (mode != 1) {
+ moxaLowChkFlag[port] = 0;
+ low_water_check(ofsAddr);
+ }
+}
+
+int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
+{
+ int i;
+ int status;
+ int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
+ void __user *argp = (void __user *)arg;
+
+ if (port == QueryPort) {
+ if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
+ (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
+ (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
+ (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
+ (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
+ return (-EINVAL);
+ }
+ switch (cmd) {
+ case MOXA_GET_CONF:
+ if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
+ return -EFAULT;
+ return (0);
+ case MOXA_INIT_DRIVER:
+ if ((int) arg == 0x404)
+ MoxaDriverInit();
+ return (0);
+ case MOXA_GETDATACOUNT:
+ moxaLog.tick = jiffies;
+ if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
+ return -EFAULT;
+ return (0);
+ case MOXA_FLUSH_QUEUE:
+ MoxaPortFlushData(port, arg);
+ return (0);
+ case MOXA_GET_IOQUEUE:
+ for (i = 0; i < MAX_PORTS; i++) {
+ if (moxaChkPort[i]) {
+ temp_queue[i].inq = MoxaPortRxQueue(i);
+ temp_queue[i].outq = MoxaPortTxQueue(i);
+ }
+ }
+ if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
+ return -EFAULT;
+ return (0);
+ case MOXA_GET_OQUEUE:
+ i = MoxaPortTxQueue(port);
+ return put_user(i, (unsigned long __user *)argp);
+ case MOXA_GET_IQUEUE:
+ i = MoxaPortRxQueue(port);
+ return put_user(i, (unsigned long __user *)argp);
+ case MOXA_GET_MAJOR:
+ if(copy_to_user(argp, &ttymajor, sizeof(int)))
+ return -EFAULT;
+ return 0;
+ case MOXA_GET_CUMAJOR:
+ i = 0;
+ if(copy_to_user(argp, &i, sizeof(int)))
+ return -EFAULT;
+ return 0;
+ case MOXA_GETMSTATUS:
+ for (i = 0; i < MAX_PORTS; i++) {
+ GMStatus[i].ri = 0;
+ GMStatus[i].dcd = 0;
+ GMStatus[i].dsr = 0;
+ GMStatus[i].cts = 0;
+ if (!moxaChkPort[i]) {
+ continue;
+ } else {
+ status = MoxaPortLineStatus(moxaChannels[i].port);
+ if (status & 1)
+ GMStatus[i].cts = 1;
+ if (status & 2)
+ GMStatus[i].dsr = 1;
+ if (status & 4)
+ GMStatus[i].dcd = 1;
+ }
+
+ if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
+ GMStatus[i].cflag = moxaChannels[i].cflag;
+ else
+ GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
+ }
+ if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
+ return -EFAULT;
+ return 0;
+ default:
+ return (-ENOIOCTLCMD);
+ case MOXA_LOAD_BIOS:
+ case MOXA_FIND_BOARD:
+ case MOXA_LOAD_C320B:
+ case MOXA_LOAD_CODE:
+ break;
+ }
+
+ if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
+ return -EFAULT;
+ if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
+ return -EINVAL;
+
+ switch(cmd)
+ {
+ case MOXA_LOAD_BIOS:
+ i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
+ return (i);
+ case MOXA_FIND_BOARD:
+ return moxafindcard(dltmp.cardno);
+ case MOXA_LOAD_C320B:
+ moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
+ default: /* to keep gcc happy */
+ return (0);
+ case MOXA_LOAD_CODE:
+ i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
+ if (i == -1)
+ return (-EFAULT);
+ return (i);
+
+ }
+}
+
+int MoxaDriverPoll(void)
+{
+ register ushort temp;
+ register int card;
+ void __iomem *ofsAddr;
+ void __iomem *ip;
+ int port, p, ports;
+
+ if (moxaCard == 0)
+ return (-1);
+ for (card = 0; card < MAX_BOARDS; card++) {
+ if ((ports = moxa_boards[card].numPorts) == 0)
+ continue;
+ if (readb(moxaIntPend[card]) == 0xff) {
+ ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
+ p = card * MAX_PORTS_PER_BOARD;
+ ports <<= 1;
+ for (port = 0; port < ports; port += 2, p++) {
+ if ((temp = readw(ip + port)) != 0) {
+ writew(0, ip + port);
+ ofsAddr = moxaTableAddr[p];
+ if (temp & IntrTx)
+ writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
+ if (temp & IntrBreak) {
+ moxaBreakCnt[p]++;
+ }
+ if (temp & IntrLine) {
+ if (readb(ofsAddr + FlagStat) & DCD_state) {
+ if ((moxaDCDState[p] & DCD_oldstate) == 0)
+ moxaDCDState[p] = (DCD_oldstate |
+ DCD_changed);
+ } else {
+ if (moxaDCDState[p] & DCD_oldstate)
+ moxaDCDState[p] = DCD_changed;
+ }
+ }
+ }
+ }
+ writeb(0, moxaIntPend[card]);
+ }
+ if (moxaLowWaterChk) {
+ p = card * MAX_PORTS_PER_BOARD;
+ for (port = 0; port < ports; port++, p++) {
+ if (moxaLowChkFlag[p]) {
+ moxaLowChkFlag[p] = 0;
+ ofsAddr = moxaTableAddr[p];
+ low_water_check(ofsAddr);
+ }
+ }
+ }
+ }
+ moxaLowWaterChk = 0;
+ return (0);
+}
+
+/*****************************************************************************
+ * Card level function: *
+ * 1. MoxaPortsOfCard(int cardno); *
+ *****************************************************************************/
+int MoxaPortsOfCard(int cardno)
+{
+
+ if (moxa_boards[cardno].boardType == 0)
+ return (0);
+ return (moxa_boards[cardno].numPorts);
+}
+
+/*****************************************************************************
+ * Port level functions: *
+ * 1. MoxaPortIsValid(int port); *
+ * 2. MoxaPortEnable(int port); *
+ * 3. MoxaPortDisable(int port); *
+ * 4. MoxaPortGetMaxBaud(int port); *
+ * 5. MoxaPortGetCurBaud(int port); *
+ * 6. MoxaPortSetBaud(int port, long baud); *
+ * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
+ * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
+ * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
+ * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
+ * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
+ * 12. MoxaPortLineStatus(int port); *
+ * 13. MoxaPortDCDChange(int port); *
+ * 14. MoxaPortDCDON(int port); *
+ * 15. MoxaPortFlushData(int port, int mode); *
+ * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
+ * 17. MoxaPortReadData(int port, unsigned char * buffer, int length); *
+ * 18. MoxaPortTxBufSize(int port); *
+ * 19. MoxaPortRxBufSize(int port); *
+ * 20. MoxaPortTxQueue(int port); *
+ * 21. MoxaPortTxFree(int port); *
+ * 22. MoxaPortRxQueue(int port); *
+ * 23. MoxaPortRxFree(int port); *
+ * 24. MoxaPortTxDisable(int port); *
+ * 25. MoxaPortTxEnable(int port); *
+ * 26. MoxaPortGetBrkCnt(int port); *
+ * 27. MoxaPortResetBrkCnt(int port); *
+ * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
+ * 29. MoxaPortIsTxHold(int port); *
+ * 30. MoxaPortSendBreak(int port, int ticks); *
+ *****************************************************************************/
+/*
+ * Moxa Port Number Description:
+ *
+ * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
+ * the port number using in MOXA driver functions will be 0 to 31 for
+ * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
+ * to 127 for fourth. For example, if you setup three MOXA boards,
+ * first board is C218, second board is C320-16 and third board is
+ * C320-32. The port number of first board (C218 - 8 ports) is from
+ * 0 to 7. The port number of second board (C320 - 16 ports) is form
+ * 32 to 47. The port number of third board (C320 - 32 ports) is from
+ * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
+ * 127 will be invalid.
+ *
+ *
+ * Moxa Functions Description:
+ *
+ * Function 1: Driver initialization routine, this routine must be
+ * called when initialized driver.
+ * Syntax:
+ * void MoxaDriverInit();
+ *
+ *
+ * Function 2: Moxa driver private IOCTL command processing.
+ * Syntax:
+ * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
+ *
+ * unsigned int cmd : IOCTL command
+ * unsigned long arg : IOCTL argument
+ * int port : port number (0 - 127)
+ *
+ * return: 0 (OK)
+ * -EINVAL
+ * -ENOIOCTLCMD
+ *
+ *
+ * Function 3: Moxa driver polling process routine.
+ * Syntax:
+ * int MoxaDriverPoll(void);
+ *
+ * return: 0 ; polling O.K.
+ * -1 : no any Moxa card.
+ *
+ *
+ * Function 4: Get the ports of this card.
+ * Syntax:
+ * int MoxaPortsOfCard(int cardno);
+ *
+ * int cardno : card number (0 - 3)
+ *
+ * return: 0 : this card is invalid
+ * 8/16/24/32
+ *
+ *
+ * Function 5: Check this port is valid or invalid
+ * Syntax:
+ * int MoxaPortIsValid(int port);
+ * int port : port number (0 - 127, ref port description)
+ *
+ * return: 0 : this port is invalid
+ * 1 : this port is valid
+ *
+ *
+ * Function 6: Enable this port to start Tx/Rx data.
+ * Syntax:
+ * void MoxaPortEnable(int port);
+ * int port : port number (0 - 127)
+ *
+ *
+ * Function 7: Disable this port
+ * Syntax:
+ * void MoxaPortDisable(int port);
+ * int port : port number (0 - 127)
+ *
+ *
+ * Function 8: Get the maximun available baud rate of this port.
+ * Syntax:
+ * long MoxaPortGetMaxBaud(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: 0 : this port is invalid
+ * 38400/57600/115200 bps
+ *
+ *
+ * Function 9: Get the current baud rate of this port.
+ * Syntax:
+ * long MoxaPortGetCurBaud(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: 0 : this port is invalid
+ * 50 - 115200 bps
+ *
+ *
+ * Function 10: Setting baud rate of this port.
+ * Syntax:
+ * long MoxaPortSetBaud(int port, long baud);
+ * int port : port number (0 - 127)
+ * long baud : baud rate (50 - 115200)
+ *
+ * return: 0 : this port is invalid or baud < 50
+ * 50 - 115200 : the real baud rate set to the port, if
+ * the argument baud is large than maximun
+ * available baud rate, the real setting
+ * baud rate will be the maximun baud rate.
+ *
+ *
+ * Function 11: Setting the data-bits/stop-bits/parity of this port
+ * Syntax:
+ * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
+ * int port : port number (0 - 127)
+ * int databits : data bits (8/7/6/5)
+ * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
+ int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
+ *
+ * return: -1 : invalid parameter
+ * 0 : setting O.K.
+ *
+ *
+ * Function 12: Configure the port.
+ * Syntax:
+ * int MoxaPortSetTermio(int port, struct termios *termio);
+ * int port : port number (0 - 127)
+ * struct termios * termio : termio structure pointer
+ *
+ * return: -1 : this port is invalid or termio == NULL
+ * 0 : setting O.K.
+ *
+ *
+ * Function 13: Get the DTR/RTS state of this port.
+ * Syntax:
+ * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
+ * int port : port number (0 - 127)
+ * int * dtrState : pointer to INT to receive the current DTR
+ * state. (if NULL, this function will not
+ * write to this address)
+ * int * rtsState : pointer to INT to receive the current RTS
+ * state. (if NULL, this function will not
+ * write to this address)
+ *
+ * return: -1 : this port is invalid
+ * 0 : O.K.
+ *
+ *
+ * Function 14: Setting the DTR/RTS output state of this port.
+ * Syntax:
+ * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
+ * int port : port number (0 - 127)
+ * int dtrState : DTR output state (0: off, 1: on)
+ * int rtsState : RTS output state (0: off, 1: on)
+ *
+ *
+ * Function 15: Setting the flow control of this port.
+ * Syntax:
+ * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
+ * int txFlow,int xany);
+ * int port : port number (0 - 127)
+ * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
+ * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
+ * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
+ * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
+ * int xany : S/W XANY flow control (0: no, 1: yes)
+ *
+ *
+ * Function 16: Get ths line status of this port
+ * Syntax:
+ * int MoxaPortLineStatus(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: Bit 0 - CTS state (0: off, 1: on)
+ * Bit 1 - DSR state (0: off, 1: on)
+ * Bit 2 - DCD state (0: off, 1: on)
+ *
+ *
+ * Function 17: Check the DCD state has changed since the last read
+ * of this function.
+ * Syntax:
+ * int MoxaPortDCDChange(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: 0 : no changed
+ * 1 : DCD has changed
+ *
+ *
+ * Function 18: Check ths current DCD state is ON or not.
+ * Syntax:
+ * int MoxaPortDCDON(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: 0 : DCD off
+ * 1 : DCD on
+ *
+ *
+ * Function 19: Flush the Rx/Tx buffer data of this port.
+ * Syntax:
+ * void MoxaPortFlushData(int port, int mode);
+ * int port : port number (0 - 127)
+ * int mode
+ * 0 : flush the Rx buffer
+ * 1 : flush the Tx buffer
+ * 2 : flush the Rx and Tx buffer
+ *
+ *
+ * Function 20: Write data.
+ * Syntax:
+ * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
+ * int port : port number (0 - 127)
+ * unsigned char * buffer : pointer to write data buffer.
+ * int length : write data length
+ *
+ * return: 0 - length : real write data length
+ *
+ *
+ * Function 21: Read data.
+ * Syntax:
+ * int MoxaPortReadData(int port, unsigned char * buffer, int length);
+ * int port : port number (0 - 127)
+ * unsigned char * buffer : pointer to read data buffer.
+ * int length : read data buffer length
+ *
+ * return: 0 - length : real read data length
+ *
+ *
+ * Function 22: Get the Tx buffer size of this port
+ * Syntax:
+ * int MoxaPortTxBufSize(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: .. : Tx buffer size
+ *
+ *
+ * Function 23: Get the Rx buffer size of this port
+ * Syntax:
+ * int MoxaPortRxBufSize(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: .. : Rx buffer size
+ *
+ *
+ * Function 24: Get the Tx buffer current queued data bytes
+ * Syntax:
+ * int MoxaPortTxQueue(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: .. : Tx buffer current queued data bytes
+ *
+ *
+ * Function 25: Get the Tx buffer current free space
+ * Syntax:
+ * int MoxaPortTxFree(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: .. : Tx buffer current free space
+ *
+ *
+ * Function 26: Get the Rx buffer current queued data bytes
+ * Syntax:
+ * int MoxaPortRxQueue(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: .. : Rx buffer current queued data bytes
+ *
+ *
+ * Function 27: Get the Rx buffer current free space
+ * Syntax:
+ * int MoxaPortRxFree(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: .. : Rx buffer current free space
+ *
+ *
+ * Function 28: Disable port data transmission.
+ * Syntax:
+ * void MoxaPortTxDisable(int port);
+ * int port : port number (0 - 127)
+ *
+ *
+ * Function 29: Enable port data transmission.
+ * Syntax:
+ * void MoxaPortTxEnable(int port);
+ * int port : port number (0 - 127)
+ *
+ *
+ * Function 30: Get the received BREAK signal count.
+ * Syntax:
+ * int MoxaPortGetBrkCnt(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: 0 - .. : BREAK signal count
+ *
+ *
+ * Function 31: Get the received BREAK signal count and reset it.
+ * Syntax:
+ * int MoxaPortResetBrkCnt(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: 0 - .. : BREAK signal count
+ *
+ *
+ * Function 32: Set the S/W flow control new XON/XOFF value, default
+ * XON is 0x11 & XOFF is 0x13.
+ * Syntax:
+ * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
+ * int port : port number (0 - 127)
+ * int xonValue : new XON value (0 - 255)
+ * int xoffValue : new XOFF value (0 - 255)
+ *
+ *
+ * Function 33: Check this port's transmission is hold by remote site
+ * because the flow control.
+ * Syntax:
+ * int MoxaPortIsTxHold(int port);
+ * int port : port number (0 - 127)
+ *
+ * return: 0 : normal
+ * 1 : hold by remote site
+ *
+ *
+ * Function 34: Send out a BREAK signal.
+ * Syntax:
+ * void MoxaPortSendBreak(int port, int ms100);
+ * int port : port number (0 - 127)
+ * int ms100 : break signal time interval.
+ * unit: 100 mini-second. if ms100 == 0, it will
+ * send out a about 250 ms BREAK signal.
+ *
+ */
+int MoxaPortIsValid(int port)
+{
+
+ if (moxaCard == 0)
+ return (0);
+ if (moxaChkPort[port] == 0)
+ return (0);
+ return (1);
+}
+
+void MoxaPortEnable(int port)
+{
+ void __iomem *ofsAddr;
+ int MoxaPortLineStatus(int);
+ short lowwater = 512;
+
+ ofsAddr = moxaTableAddr[port];
+ writew(lowwater, ofsAddr + Low_water);
+ moxaBreakCnt[port] = 0;
+ if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
+ (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
+ moxafunc(ofsAddr, FC_SetBreakIrq, 0);
+ } else {
+ writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
+ }
+
+ moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
+ moxafunc(ofsAddr, FC_FlushQueue, 2);
+
+ moxafunc(ofsAddr, FC_EnableCH, Magic_code);
+ MoxaPortLineStatus(port);
+}
+
+void MoxaPortDisable(int port)
+{
+ void __iomem *ofsAddr = moxaTableAddr[port];
+
+ moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
+ moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
+ writew(0, ofsAddr + HostStat);
+ moxafunc(ofsAddr, FC_DisableCH, Magic_code);
+}
+
+long MoxaPortGetMaxBaud(int port)
+{
+ if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
+ (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
+ return (460800L);
+ else
+ return (921600L);
+}
+
+
+long MoxaPortSetBaud(int port, long baud)
+{
+ void __iomem *ofsAddr;
+ long max, clock;
+ unsigned int val;
+
+ if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
+ return (0);
+ ofsAddr = moxaTableAddr[port];
+ if (baud > max)
+ baud = max;
+ if (max == 38400L)
+ clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
+ else if (max == 57600L)
+ clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
+ else
+ clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
+ val = clock / baud;
+ moxafunc(ofsAddr, FC_SetBaud, val);
+ baud = clock / val;
+ moxaCurBaud[port] = baud;
+ return (baud);
+}
+
+int MoxaPortSetTermio(int port, struct termios *termio)
+{
+ void __iomem *ofsAddr;
+ tcflag_t cflag;
+ long baud;
+ tcflag_t mode = 0;
+
+ if (moxaChkPort[port] == 0 || termio == 0)
+ return (-1);
+ ofsAddr = moxaTableAddr[port];
+ cflag = termio->c_cflag; /* termio->c_cflag */
+
+ mode = termio->c_cflag & CSIZE;
+ if (mode == CS5)
+ mode = MX_CS5;
+ else if (mode == CS6)
+ mode = MX_CS6;
+ else if (mode == CS7)
+ mode = MX_CS7;
+ else if (mode == CS8)
+ mode = MX_CS8;
+
+ if (termio->c_cflag & CSTOPB) {
+ if (mode == MX_CS5)
+ mode |= MX_STOP15;
+ else
+ mode |= MX_STOP2;
+ } else
+ mode |= MX_STOP1;
+
+ if (termio->c_cflag & PARENB) {
+ if (termio->c_cflag & PARODD)
+ mode |= MX_PARODD;
+ else
+ mode |= MX_PAREVEN;
+ } else
+ mode |= MX_PARNONE;
+
+ moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
+
+ cflag &= (CBAUD | CBAUDEX);
+#ifndef B921600
+#define B921600 (B460800+1)
+#endif
+ switch (cflag) {
+ case B921600:
+ baud = 921600L;
+ break;
+ case B460800:
+ baud = 460800L;
+ break;
+ case B230400:
+ baud = 230400L;
+ break;
+ case B115200:
+ baud = 115200L;
+ break;
+ case B57600:
+ baud = 57600L;
+ break;
+ case B38400:
+ baud = 38400L;
+ break;
+ case B19200:
+ baud = 19200L;
+ break;
+ case B9600:
+ baud = 9600L;
+ break;
+ case B4800:
+ baud = 4800L;
+ break;
+ case B2400:
+ baud = 2400L;
+ break;
+ case B1800:
+ baud = 1800L;
+ break;
+ case B1200:
+ baud = 1200L;
+ break;
+ case B600:
+ baud = 600L;
+ break;
+ case B300:
+ baud = 300L;
+ break;
+ case B200:
+ baud = 200L;
+ break;
+ case B150:
+ baud = 150L;
+ break;
+ case B134:
+ baud = 134L;
+ break;
+ case B110:
+ baud = 110L;
+ break;
+ case B75:
+ baud = 75L;
+ break;
+ case B50:
+ baud = 50L;
+ break;
+ default:
+ baud = 0;
+ }
+ if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
+ (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
+ if (baud == 921600L)
+ return (-1);
+ }
+ MoxaPortSetBaud(port, baud);
+
+ if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
+ writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
+ writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
+ writeb(FC_SetXonXoff, ofsAddr + FuncCode);
+ wait_finish(ofsAddr);
+
+ }
+ return (0);
+}
+
+int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
+{
+
+ if (!MoxaPortIsValid(port))
+ return (-1);
+ if (dtrState) {
+ if (moxaLineCtrl[port] & DTR_ON)
+ *dtrState = 1;
+ else
+ *dtrState = 0;
+ }
+ if (rtsState) {
+ if (moxaLineCtrl[port] & RTS_ON)
+ *rtsState = 1;
+ else
+ *rtsState = 0;
+ }
+ return (0);
+}
+
+void MoxaPortLineCtrl(int port, int dtr, int rts)
+{
+ void __iomem *ofsAddr;
+ int mode;
+
+ ofsAddr = moxaTableAddr[port];
+ mode = 0;
+ if (dtr)
+ mode |= DTR_ON;
+ if (rts)
+ mode |= RTS_ON;
+ moxaLineCtrl[port] = mode;
+ moxafunc(ofsAddr, FC_LineControl, mode);
+}
+
+void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
+{
+ void __iomem *ofsAddr;
+ int mode;
+
+ ofsAddr = moxaTableAddr[port];
+ mode = 0;
+ if (rts)
+ mode |= RTS_FlowCtl;
+ if (cts)
+ mode |= CTS_FlowCtl;
+ if (txflow)
+ mode |= Tx_FlowCtl;
+ if (rxflow)
+ mode |= Rx_FlowCtl;
+ if (txany)
+ mode |= IXM_IXANY;
+ moxafunc(ofsAddr, FC_SetFlowCtl, mode);
+}
+
+int MoxaPortLineStatus(int port)
+{
+ void __iomem *ofsAddr;
+ int val;
+
+ ofsAddr = moxaTableAddr[port];
+ if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
+ (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
+ moxafunc(ofsAddr, FC_LineStatus, 0);
+ val = readw(ofsAddr + FuncArg);
+ } else {
+ val = readw(ofsAddr + FlagStat) >> 4;
+ }
+ val &= 0x0B;
+ if (val & 8) {
+ val |= 4;
+ if ((moxaDCDState[port] & DCD_oldstate) == 0)
+ moxaDCDState[port] = (DCD_oldstate | DCD_changed);
+ } else {
+ if (moxaDCDState[port] & DCD_oldstate)
+ moxaDCDState[port] = DCD_changed;
+ }
+ val &= 7;
+ return (val);
+}
+
+int MoxaPortDCDChange(int port)
+{
+ int n;
+
+ if (moxaChkPort[port] == 0)
+ return (0);
+ n = moxaDCDState[port];
+ moxaDCDState[port] &= ~DCD_changed;
+ n &= DCD_changed;
+ return (n);
+}
+
+int MoxaPortDCDON(int port)
+{
+ int n;
+
+ if (moxaChkPort[port] == 0)
+ return (0);
+ if (moxaDCDState[port] & DCD_oldstate)
+ n = 1;
+ else
+ n = 0;
+ return (n);
+}
+
+
+/*
+ int MoxaDumpMem(int port, unsigned char * buffer, int len)
+ {
+ int i;
+ unsigned long baseAddr,ofsAddr,ofs;
+
+ baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
+ ofs = baseAddr + DynPage_addr + pageofs;
+ if (len > 0x2000L)
+ len = 0x2000L;
+ for (i = 0; i < len; i++)
+ buffer[i] = readb(ofs+i);
+ }
+ */
+
+
+int MoxaPortWriteData(int port, unsigned char * buffer, int len)
+{
+ int c, total, i;
+ ushort tail;
+ int cnt;
+ ushort head, tx_mask, spage, epage;
+ ushort pageno, pageofs, bufhead;
+ void __iomem *baseAddr, *ofsAddr, *ofs;
+
+ ofsAddr = moxaTableAddr[port];
+ baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
+ tx_mask = readw(ofsAddr + TX_mask);
+ spage = readw(ofsAddr + Page_txb);
+ epage = readw(ofsAddr + EndPage_txb);
+ tail = readw(ofsAddr + TXwptr);
+ head = readw(ofsAddr + TXrptr);
+ c = (head > tail) ? (head - tail - 1)
+ : (head - tail + tx_mask);
+ if (c > len)
+ c = len;
+ moxaLog.txcnt[port] += c;
+ total = c;
+ if (spage == epage) {
+ bufhead = readw(ofsAddr + Ofs_txb);
+ writew(spage, baseAddr + Control_reg);
+ while (c > 0) {
+ if (head > tail)
+ len = head - tail - 1;
+ else
+ len = tx_mask + 1 - tail;
+ len = (c > len) ? len : c;
+ ofs = baseAddr + DynPage_addr + bufhead + tail;
+ for (i = 0; i < len; i++)
+ writeb(*buffer++, ofs + i);
+ tail = (tail + len) & tx_mask;
+ c -= len;
+ }
+ writew(tail, ofsAddr + TXwptr);
+ } else {
+ len = c;
+ pageno = spage + (tail >> 13);
+ pageofs = tail & Page_mask;
+ do {
+ cnt = Page_size - pageofs;
+ if (cnt > c)
+ cnt = c;
+ c -= cnt;
+ writeb(pageno, baseAddr + Control_reg);
+ ofs = baseAddr + DynPage_addr + pageofs;
+ for (i = 0; i < cnt; i++)
+ writeb(*buffer++, ofs + i);
+ if (c == 0) {
+ writew((tail + len) & tx_mask, ofsAddr + TXwptr);
+ break;
+ }
+ if (++pageno == epage)
+ pageno = spage;
+ pageofs = 0;
+ } while (1);
+ }
+ writeb(1, ofsAddr + CD180TXirq); /* start to send */
+ return (total);
+}
+
+int MoxaPortReadData(int port, unsigned char * buffer, int space)
+{
+ register ushort head, pageofs;
+ int i, count, cnt, len, total, remain;
+ ushort tail, rx_mask, spage, epage;
+ ushort pageno, bufhead;
+ void __iomem *baseAddr, *ofsAddr, *ofs;
+
+ ofsAddr = moxaTableAddr[port];
+ baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
+ head = readw(ofsAddr + RXrptr);
+ tail = readw(ofsAddr + RXwptr);
+ rx_mask = readw(ofsAddr + RX_mask);
+ spage = readw(ofsAddr + Page_rxb);
+ epage = readw(ofsAddr + EndPage_rxb);
+ count = (tail >= head) ? (tail - head)
+ : (tail - head + rx_mask + 1);
+ if (count == 0)
+ return (0);
+
+ total = (space > count) ? count : space;
+ remain = count - total;
+ moxaLog.rxcnt[port] += total;
+ count = total;
+ if (spage == epage) {
+ bufhead = readw(ofsAddr + Ofs_rxb);
+ writew(spage, baseAddr + Control_reg);
+ while (count > 0) {
+ if (tail >= head)
+ len = tail - head;
+ else
+ len = rx_mask + 1 - head;
+ len = (count > len) ? len : count;
+ ofs = baseAddr + DynPage_addr + bufhead + head;
+ for (i = 0; i < len; i++)
+ *buffer++ = readb(ofs + i);
+ head = (head + len) & rx_mask;
+ count -= len;
+ }
+ writew(head, ofsAddr + RXrptr);
+ } else {
+ len = count;
+ pageno = spage + (head >> 13);
+ pageofs = head & Page_mask;
+ do {
+ cnt = Page_size - pageofs;
+ if (cnt > count)
+ cnt = count;
+ count -= cnt;
+ writew(pageno, baseAddr + Control_reg);
+ ofs = baseAddr + DynPage_addr + pageofs;
+ for (i = 0; i < cnt; i++)
+ *buffer++ = readb(ofs + i);
+ if (count == 0) {
+ writew((head + len) & rx_mask, ofsAddr + RXrptr);
+ break;
+ }
+ if (++pageno == epage)
+ pageno = spage;
+ pageofs = 0;
+ } while (1);
+ }
+ if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
+ moxaLowWaterChk = 1;
+ moxaLowChkFlag[port] = 1;
+ }
+ return (total);
+}
+
+
+int MoxaPortTxQueue(int port)
+{
+ void __iomem *ofsAddr;
+ ushort rptr, wptr, mask;
+ int len;
+
+ ofsAddr = moxaTableAddr[port];
+ rptr = readw(ofsAddr + TXrptr);
+ wptr = readw(ofsAddr + TXwptr);
+ mask = readw(ofsAddr + TX_mask);
+ len = (wptr - rptr) & mask;
+ return (len);
+}
+
+int MoxaPortTxFree(int port)
+{
+ void __iomem *ofsAddr;
+ ushort rptr, wptr, mask;
+ int len;
+
+ ofsAddr = moxaTableAddr[port];
+ rptr = readw(ofsAddr + TXrptr);
+ wptr = readw(ofsAddr + TXwptr);
+ mask = readw(ofsAddr + TX_mask);
+ len = mask - ((wptr - rptr) & mask);
+ return (len);
+}
+
+int MoxaPortRxQueue(int port)
+{
+ void __iomem *ofsAddr;
+ ushort rptr, wptr, mask;
+ int len;
+
+ ofsAddr = moxaTableAddr[port];
+ rptr = readw(ofsAddr + RXrptr);
+ wptr = readw(ofsAddr + RXwptr);
+ mask = readw(ofsAddr + RX_mask);
+ len = (wptr - rptr) & mask;
+ return (len);
+}
+
+
+void MoxaPortTxDisable(int port)
+{
+ void __iomem *ofsAddr;
+
+ ofsAddr = moxaTableAddr[port];
+ moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
+}
+
+void MoxaPortTxEnable(int port)
+{
+ void __iomem *ofsAddr;
+
+ ofsAddr = moxaTableAddr[port];
+ moxafunc(ofsAddr, FC_SetXonState, Magic_code);
+}
+
+
+int MoxaPortResetBrkCnt(int port)
+{
+ ushort cnt;
+ cnt = moxaBreakCnt[port];
+ moxaBreakCnt[port] = 0;
+ return (cnt);
+}
+
+
+void MoxaPortSendBreak(int port, int ms100)
+{
+ void __iomem *ofsAddr;
+
+ ofsAddr = moxaTableAddr[port];
+ if (ms100) {
+ moxafunc(ofsAddr, FC_SendBreak, Magic_code);
+ moxadelay(ms100 * (HZ / 10));
+ } else {
+ moxafunc(ofsAddr, FC_SendBreak, Magic_code);
+ moxadelay(HZ / 4); /* 250 ms */
+ }
+ moxafunc(ofsAddr, FC_StopBreak, Magic_code);
+}
+
+static int moxa_get_serial_info(struct moxa_str *info,
+ struct serial_struct __user *retinfo)
+{
+ struct serial_struct tmp;
+
+ memset(&tmp, 0, sizeof(tmp));
+ tmp.type = info->type;
+ tmp.line = info->port;
+ tmp.port = 0;
+ tmp.irq = 0;
+ tmp.flags = info->asyncflags;
+ tmp.baud_base = 921600;
+ tmp.close_delay = info->close_delay;
+ tmp.closing_wait = info->closing_wait;
+ tmp.custom_divisor = 0;
+ tmp.hub6 = 0;
+ if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return -EFAULT;
+ return (0);
+}
+
+
+static int moxa_set_serial_info(struct moxa_str *info,
+ struct serial_struct __user *new_info)
+{
+ struct serial_struct new_serial;
+
+ if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
+ return -EFAULT;
+
+ if ((new_serial.irq != 0) ||
+ (new_serial.port != 0) ||
+// (new_serial.type != info->type) ||
+ (new_serial.custom_divisor != 0) ||
+ (new_serial.baud_base != 921600))
+ return (-EPERM);
+
+ if (!capable(CAP_SYS_ADMIN)) {
+ if (((new_serial.flags & ~ASYNC_USR_MASK) !=
+ (info->asyncflags & ~ASYNC_USR_MASK)))
+ return (-EPERM);
+ } else {
+ info->close_delay = new_serial.close_delay * HZ / 100;
+ info->closing_wait = new_serial.closing_wait * HZ / 100;
+ }
+
+ new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
+ new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
+
+ if (new_serial.type == PORT_16550A) {
+ MoxaSetFifo(info->port, 1);
+ } else {
+ MoxaSetFifo(info->port, 0);
+ }
+
+ info->type = new_serial.type;
+ return (0);
+}
+
+
+
+/*****************************************************************************
+ * Static local functions: *
+ *****************************************************************************/
+/*
+ * moxadelay - delays a specified number ticks
+ */
+static void moxadelay(int tick)
+{
+ unsigned long st, et;
+
+ st = jiffies;
+ et = st + tick;
+ while (time_before(jiffies, et));
+}
+
+static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
+{
+
+ writew(arg, ofsAddr + FuncArg);
+ writew(cmd, ofsAddr + FuncCode);
+ wait_finish(ofsAddr);
+}
+
+static void wait_finish(void __iomem *ofsAddr)
+{
+ unsigned long i, j;
+
+ i = jiffies;
+ while (readw(ofsAddr + FuncCode) != 0) {
+ j = jiffies;
+ if ((j - i) > moxaFuncTout) {
+ return;
+ }
+ }
+}
+
+static void low_water_check(void __iomem *ofsAddr)
+{
+ int len;
+ ushort rptr, wptr, mask;
+
+ if (readb(ofsAddr + FlagStat) & Xoff_state) {
+ rptr = readw(ofsAddr + RXrptr);
+ wptr = readw(ofsAddr + RXwptr);
+ mask = readw(ofsAddr + RX_mask);
+ len = (wptr - rptr) & mask;
+ if (len <= Low_water)
+ moxafunc(ofsAddr, FC_SendXon, 0);
+ }
+}
+
+static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
+{
+ void __iomem *baseAddr;
+ int i;
+
+ if(copy_from_user(moxaBuff, tmp, len))
+ return -EFAULT;
+ baseAddr = moxaBaseAddr[cardno];
+ writeb(HW_reset, baseAddr + Control_reg); /* reset */
+ moxadelay(1); /* delay 10 ms */
+ for (i = 0; i < 4096; i++)
+ writeb(0, baseAddr + i); /* clear fix page */
+ for (i = 0; i < len; i++)
+ writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
+ writeb(0, baseAddr + Control_reg); /* restart */
+ return (0);
+}
+
+static int moxafindcard(int cardno)
+{
+ void __iomem *baseAddr;
+ ushort tmp;
+
+ baseAddr = moxaBaseAddr[cardno];
+ switch (moxa_boards[cardno].boardType) {
+ case MOXA_BOARD_C218_ISA:
+ case MOXA_BOARD_C218_PCI:
+ if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
+ return (-1);
+ }
+ break;
+ case MOXA_BOARD_CP204J:
+ if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
+ return (-1);
+ }
+ break;
+ default:
+ if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
+ return (-1);
+ }
+ if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
+ return (-2);
+ }
+ }
+ return (0);
+}
+
+static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
+{
+ void __iomem *baseAddr;
+ int i;
+
+ if(len > sizeof(moxaBuff))
+ return -EINVAL;
+ if(copy_from_user(moxaBuff, tmp, len))
+ return -EFAULT;
+ baseAddr = moxaBaseAddr[cardno];
+ writew(len - 7168 - 2, baseAddr + C320bapi_len);
+ writeb(1, baseAddr + Control_reg); /* Select Page 1 */
+ for (i = 0; i < 7168; i++)
+ writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
+ writeb(2, baseAddr + Control_reg); /* Select Page 2 */
+ for (i = 0; i < (len - 7168); i++)
+ writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
+ return (0);
+}
+
+static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
+{
+ void __iomem *baseAddr, *ofsAddr;
+ int retval, port, i;
+
+ if(copy_from_user(moxaBuff, tmp, len))
+ return -EFAULT;
+ baseAddr = moxaBaseAddr[cardno];
+ switch (moxa_boards[cardno].boardType) {
+ case MOXA_BOARD_C218_ISA:
+ case MOXA_BOARD_C218_PCI:
+ case MOXA_BOARD_CP204J:
+ retval = moxaloadc218(cardno, baseAddr, len);
+ if (retval)
+ return (retval);
+ port = cardno * MAX_PORTS_PER_BOARD;
+ for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
+ moxaChkPort[port] = 1;
+ moxaCurBaud[port] = 9600L;
+ moxaDCDState[port] = 0;
+ moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
+ ofsAddr = moxaTableAddr[port];
+ writew(C218rx_mask, ofsAddr + RX_mask);
+ writew(C218tx_mask, ofsAddr + TX_mask);
+ writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
+ writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
+
+ writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
+ writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
+
+ }
+ break;
+ default:
+ retval = moxaloadc320(cardno, baseAddr, len,
+ &moxa_boards[cardno].numPorts);
+ if (retval)
+ return (retval);
+ port = cardno * MAX_PORTS_PER_BOARD;
+ for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
+ moxaChkPort[port] = 1;
+ moxaCurBaud[port] = 9600L;
+ moxaDCDState[port] = 0;
+ moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
+ ofsAddr = moxaTableAddr[port];
+ if (moxa_boards[cardno].numPorts == 8) {
+ writew(C320p8rx_mask, ofsAddr + RX_mask);
+ writew(C320p8tx_mask, ofsAddr + TX_mask);
+ writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
+ writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
+ writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
+ writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
+
+ } else if (moxa_boards[cardno].numPorts == 16) {
+ writew(C320p16rx_mask, ofsAddr + RX_mask);
+ writew(C320p16tx_mask, ofsAddr + TX_mask);
+ writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
+ writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
+ writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
+ writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
+
+ } else if (moxa_boards[cardno].numPorts == 24) {
+ writew(C320p24rx_mask, ofsAddr + RX_mask);
+ writew(C320p24tx_mask, ofsAddr + TX_mask);
+ writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
+ writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
+ writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
+ writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
+ } else if (moxa_boards[cardno].numPorts == 32) {
+ writew(C320p32rx_mask, ofsAddr + RX_mask);
+ writew(C320p32tx_mask, ofsAddr + TX_mask);
+ writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
+ writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
+ writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
+ writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
+ writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
+ }
+ }
+ break;
+ }
+ return (0);
+}
+
+static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
+{
+ char retry;
+ int i, j, len1, len2;
+ ushort usum, *ptr, keycode;
+
+ if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
+ keycode = CP204J_KeyCode;
+ else
+ keycode = C218_KeyCode;
+ usum = 0;
+ len1 = len >> 1;
+ ptr = (ushort *) moxaBuff;
+ for (i = 0; i < len1; i++)
+ usum += *(ptr + i);
+ retry = 0;
+ do {
+ len1 = len >> 1;
+ j = 0;
+ while (len1) {
+ len2 = (len1 > 2048) ? 2048 : len1;
+ len1 -= len2;
+ for (i = 0; i < len2 << 1; i++)
+ writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
+ j += i;
+
+ writew(len2, baseAddr + C218DLoad_len);
+ writew(0, baseAddr + C218_key);
+ for (i = 0; i < 100; i++) {
+ if (readw(baseAddr + C218_key) == keycode)
+ break;
+ moxadelay(1); /* delay 10 ms */
+ }
+ if (readw(baseAddr + C218_key) != keycode) {
+ return (-1);
+ }
+ }
+ writew(0, baseAddr + C218DLoad_len);
+ writew(usum, baseAddr + C218check_sum);
+ writew(0, baseAddr + C218_key);
+ for (i = 0; i < 100; i++) {
+ if (readw(baseAddr + C218_key) == keycode)
+ break;
+ moxadelay(1); /* delay 10 ms */
+ }
+ retry++;
+ } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
+ if (readb(baseAddr + C218chksum_ok) != 1) {
+ return (-1);
+ }
+ writew(0, baseAddr + C218_key);
+ for (i = 0; i < 100; i++) {
+ if (readw(baseAddr + Magic_no) == Magic_code)
+ break;
+ moxadelay(1); /* delay 10 ms */
+ }
+ if (readw(baseAddr + Magic_no) != Magic_code) {
+ return (-1);
+ }
+ writew(1, baseAddr + Disable_IRQ);
+ writew(0, baseAddr + Magic_no);
+ for (i = 0; i < 100; i++) {
+ if (readw(baseAddr + Magic_no) == Magic_code)
+ break;
+ moxadelay(1); /* delay 10 ms */
+ }
+ if (readw(baseAddr + Magic_no) != Magic_code) {
+ return (-1);
+ }
+ moxaCard = 1;
+ moxaIntNdx[cardno] = baseAddr + IRQindex;
+ moxaIntPend[cardno] = baseAddr + IRQpending;
+ moxaIntTable[cardno] = baseAddr + IRQtable;
+ return (0);
+}
+
+static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
+{
+ ushort usum;
+ int i, j, wlen, len2, retry;
+ ushort *uptr;
+
+ usum = 0;
+ wlen = len >> 1;
+ uptr = (ushort *) moxaBuff;
+ for (i = 0; i < wlen; i++)
+ usum += uptr[i];
+ retry = 0;
+ j = 0;
+ do {
+ while (wlen) {
+ if (wlen > 2048)
+ len2 = 2048;
+ else
+ len2 = wlen;
+ wlen -= len2;
+ len2 <<= 1;
+ for (i = 0; i < len2; i++)
+ writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
+ len2 >>= 1;
+ j += i;
+ writew(len2, baseAddr + C320DLoad_len);
+ writew(0, baseAddr + C320_key);
+ for (i = 0; i < 10; i++) {
+ if (readw(baseAddr + C320_key) == C320_KeyCode)
+ break;
+ moxadelay(1);
+ }
+ if (readw(baseAddr + C320_key) != C320_KeyCode)
+ return (-1);
+ }
+ writew(0, baseAddr + C320DLoad_len);
+ writew(usum, baseAddr + C320check_sum);
+ writew(0, baseAddr + C320_key);
+ for (i = 0; i < 10; i++) {
+ if (readw(baseAddr + C320_key) == C320_KeyCode)
+ break;
+ moxadelay(1);
+ }
+ retry++;
+ } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
+ if (readb(baseAddr + C320chksum_ok) != 1)
+ return (-1);
+ writew(0, baseAddr + C320_key);
+ for (i = 0; i < 600; i++) {
+ if (readw(baseAddr + Magic_no) == Magic_code)
+ break;
+ moxadelay(1);
+ }
+ if (readw(baseAddr + Magic_no) != Magic_code)
+ return (-100);
+
+ if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
+ writew(0x3800, baseAddr + TMS320_PORT1);
+ writew(0x3900, baseAddr + TMS320_PORT2);
+ writew(28499, baseAddr + TMS320_CLOCK);
+ } else {
+ writew(0x3200, baseAddr + TMS320_PORT1);
+ writew(0x3400, baseAddr + TMS320_PORT2);
+ writew(19999, baseAddr + TMS320_CLOCK);
+ }
+ writew(1, baseAddr + Disable_IRQ);
+ writew(0, baseAddr + Magic_no);
+ for (i = 0; i < 500; i++) {
+ if (readw(baseAddr + Magic_no) == Magic_code)
+ break;
+ moxadelay(1);
+ }
+ if (readw(baseAddr + Magic_no) != Magic_code)
+ return (-102);
+
+ j = readw(baseAddr + Module_cnt);
+ if (j <= 0)
+ return (-101);
+ *numPorts = j * 8;
+ writew(j, baseAddr + Module_no);
+ writew(0, baseAddr + Magic_no);
+ for (i = 0; i < 600; i++) {
+ if (readw(baseAddr + Magic_no) == Magic_code)
+ break;
+ moxadelay(1);
+ }
+ if (readw(baseAddr + Magic_no) != Magic_code)
+ return (-102);
+ moxaCard = 1;
+ moxaIntNdx[cardno] = baseAddr + IRQindex;
+ moxaIntPend[cardno] = baseAddr + IRQpending;
+ moxaIntTable[cardno] = baseAddr + IRQtable;
+ return (0);
+}
+
+#if 0
+long MoxaPortGetCurBaud(int port)
+{
+
+ if (moxaChkPort[port] == 0)
+ return (0);
+ return (moxaCurBaud[port]);
+}
+#endif /* 0 */
+
+static void MoxaSetFifo(int port, int enable)
+{
+ void __iomem *ofsAddr = moxaTableAddr[port];
+
+ if (!enable) {
+ moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
+ moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
+ } else {
+ moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
+ moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
+ }
+}
+
+#if 0
+int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
+{
+ void __iomem *ofsAddr;
+ int val;
+
+ val = 0;
+ switch (databits) {
+ case 5:
+ val |= 0;
+ break;
+ case 6:
+ val |= 1;
+ break;
+ case 7:
+ val |= 2;
+ break;
+ case 8:
+ val |= 3;
+ break;
+ default:
+ return (-1);
+ }
+ switch (stopbits) {
+ case 0:
+ val |= 0;
+ break; /* stop bits 1.5 */
+ case 1:
+ val |= 0;
+ break;
+ case 2:
+ val |= 4;
+ break;
+ default:
+ return (-1);
+ }
+ switch (parity) {
+ case 0:
+ val |= 0x00;
+ break; /* None */
+ case 1:
+ val |= 0x08;
+ break; /* Odd */
+ case 2:
+ val |= 0x18;
+ break; /* Even */
+ case 3:
+ val |= 0x28;
+ break; /* Mark */
+ case 4:
+ val |= 0x38;
+ break; /* Space */
+ default:
+ return (-1);
+ }
+ ofsAddr = moxaTableAddr[port];
+ moxafunc(ofsAddr, FC_SetMode, val);
+ return (0);
+}
+
+int MoxaPortTxBufSize(int port)
+{
+ void __iomem *ofsAddr;
+ int size;
+
+ ofsAddr = moxaTableAddr[port];
+ size = readw(ofsAddr + TX_mask);
+ return (size);
+}
+
+int MoxaPortRxBufSize(int port)
+{
+ void __iomem *ofsAddr;
+ int size;
+
+ ofsAddr = moxaTableAddr[port];
+ size = readw(ofsAddr + RX_mask);
+ return (size);
+}
+
+int MoxaPortRxFree(int port)
+{
+ void __iomem *ofsAddr;
+ ushort rptr, wptr, mask;
+ int len;
+
+ ofsAddr = moxaTableAddr[port];
+ rptr = readw(ofsAddr + RXrptr);
+ wptr = readw(ofsAddr + RXwptr);
+ mask = readw(ofsAddr + RX_mask);
+ len = mask - ((wptr - rptr) & mask);
+ return (len);
+}
+int MoxaPortGetBrkCnt(int port)
+{
+ return (moxaBreakCnt[port]);
+}
+
+void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
+{
+ void __iomem *ofsAddr;
+
+ ofsAddr = moxaTableAddr[port];
+ writew(xonValue, ofsAddr + FuncArg);
+ writew(xoffValue, ofsAddr + FuncArg1);
+ writew(FC_SetXonXoff, ofsAddr + FuncCode);
+ wait_finish(ofsAddr);
+}
+
+int MoxaPortIsTxHold(int port)
+{
+ void __iomem *ofsAddr;
+ int val;
+
+ ofsAddr = moxaTableAddr[port];
+ if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
+ (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
+ moxafunc(ofsAddr, FC_GetCCSR, 0);
+ val = readw(ofsAddr + FuncArg);
+ if (val & 0x04)
+ return (1);
+ } else {
+ if (readw(ofsAddr + FlagStat) & Tx_flowOff)
+ return (1);
+ }
+ return (0);
+}
+#endif
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-16 09:03:42 +0300