| /*****************************************************************************/ |
| /* |
| * 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, struct tty_struct *tty); |
| 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, |
| }; |
| |
| static spinlock_t moxa_lock = SPIN_LOCK_UNLOCKED; |
| |
| #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 = "ttyMX"; |
| 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 = ARRAY_SIZE(moxa_pcibrds) - 1; |
| i = 0; |
| while (i < n) { |
| while ((p = pci_get_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; |
| |
| spin_lock_irqsave(&moxa_lock, flags); |
| len = MoxaPortWriteData(port, (unsigned char *) buf, count); |
| spin_unlock_irqrestore(&moxa_lock, 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; |
| spin_lock_irqsave(&moxa_lock, flags); |
| moxaXmitBuff[0] = c; |
| MoxaPortWriteData(port, moxaXmitBuff, 1); |
| spin_unlock_irqrestore(&moxa_lock, 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 |
| spin_lock_irqsave(&moxa_lock, flags); |
| if (!tty_hung_up_p(filp)) |
| ch->count--; |
| ch->blocked_open++; |
| spin_unlock_irqrestore(&moxa_lock, flags); |
| |
| 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); |
| |
| spin_lock_irqsave(&moxa_lock, flags); |
| if (!tty_hung_up_p(filp)) |
| ch->count++; |
| ch->blocked_open--; |
| spin_unlock_irqrestore(&moxa_lock, flags); |
| #ifdef SERIAL_DEBUG_OPEN |
| printk("block_til_ready after blocking: ttys%d, count = %d\n", |
| ch->line, ch->count); |
| #endif |
| if (retval) |
| return (retval); |
| /* FIXME: review to see if we need to use set_bit on these */ |
| 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; |
| |
| spin_lock_irqsave(&moxa_lock, flags); |
| 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]); |
| spin_unlock_irqrestore(&moxa_lock, 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; |
| 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; |
| } |
| spin_lock_irqsave(&moxa_lock, flags); |
| MoxaPortReadData(ch->port, tp); |
| spin_unlock_irqrestore(&moxa_lock, flags); |
| tty_schedule_flip(tp); |
| } |
| |
| #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: |
| if (!capable(CAP_SYS_RAWIO)) |
| return -EPERM; |
| 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, struct tty_struct *tty); * |
| * 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, struct tty_struct *tty); |
| * int port : port number (0 - 127) |
| * struct tty_struct *tty : tty for data |
| * |
| * 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, struct tty_struct *tty) |
| { |
| 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 = count; |
| 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++) |
| tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL); |
| 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++) |
| tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL); |
| 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
|