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3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 | /*****************************************************************************/ /* * 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/version.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 <asm/system.h> #include <asm/io.h> #include <asm/segment.h> #include <asm/bitops.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", }; typedef struct { unsigned short vendor_id; unsigned short device_id; unsigned short board_type; } moxa_pciinfo; static moxa_pciinfo moxa_pcibrds[] = { {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, MOXA_BOARD_C218_PCI}, {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, MOXA_BOARD_C320_PCI}, {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, MOXA_BOARD_CP204J}, }; 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 unsigned long moxaBaseAddr[MAX_BOARDS]; struct moxa_str { int type; int port; int close_delay; unsigned short closing_wait; int count; int blocked_open; int event; int asyncflags; long session; long pgrp; unsigned long statusflags; struct tty_struct *tty; struct termios normal_termios; struct termios callout_termios; wait_queue_head_t open_wait; wait_queue_head_t close_wait; struct tq_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 SERIAL_TYPE_CALLOUT 2 #define WAKEUP_CHARS 256 #define PORTNO(x) (MINOR((x)->device) - (x)->driver.minor_start) static int verbose = 0; static int ttymajor = MOXAMAJOR; static int calloutmajor = MOXACUMAJOR; #ifdef MODULE /* Variables for insmod */ static int baseaddr[] = {0, 0, 0, 0}; static int type[] = {0, 0, 0, 0}; static int numports[] = {0, 0, 0, 0}; MODULE_AUTHOR("William Chen"); MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); MODULE_PARM(type, "1-4i"); MODULE_PARM(baseaddr, "1-4i"); MODULE_PARM(numports, "1-4i"); MODULE_PARM(ttymajor, "i"); MODULE_PARM(calloutmajor, "i"); MODULE_PARM(verbose, "i"); #endif //MODULE static struct tty_driver moxaDriver; static struct tty_driver moxaCallout; static struct tty_struct *moxaTable[MAX_PORTS + 1]; static struct termios *moxaTermios[MAX_PORTS + 1]; static struct termios *moxaTermiosLocked[MAX_PORTS + 1]; static struct moxa_str moxaChannels[MAX_PORTS]; static int moxaRefcount; 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; int moxa_init(void); #ifdef MODULE int init_module(void); void cleanup_module(void); #endif /* * static functions: */ static int moxa_get_PCI_conf(struct pci_dev *, int, moxa_board_conf *); 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 *, int, 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 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 *); static int moxa_set_serial_info(struct moxa_str *, struct serial_struct *); static void MoxaSetFifo(int port, int enable); #ifdef MODULE int init_module(void) { int ret; if (verbose) printk("Loading module moxa ...\n"); ret = moxa_init(); if (verbose) printk("Done\n"); return (ret); } void cleanup_module(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(&moxaCallout)) printk("Couldn't unregister MOXA Intellio family callout driver\n"); if (tty_unregister_driver(&moxaDriver)) printk("Couldn't unregister MOXA Intellio family serial driver\n"); if (verbose) printk("Done\n"); } #endif int moxa_init(void) { int i, n, numBoards; struct moxa_str *ch; int ret1, ret2; printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION); init_MUTEX(&moxaBuffSem); memset(&moxaDriver, 0, sizeof(struct tty_driver)); memset(&moxaCallout, 0, sizeof(struct tty_driver)); moxaDriver.magic = TTY_DRIVER_MAGIC; moxaDriver.name = "ttya"; moxaDriver.major = ttymajor; moxaDriver.minor_start = 0; moxaDriver.num = MAX_PORTS + 1; 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; moxaDriver.refcount = &moxaRefcount; moxaDriver.table = moxaTable; moxaDriver.termios = moxaTermios; moxaDriver.termios_locked = moxaTermiosLocked; moxaDriver.open = moxa_open; moxaDriver.close = moxa_close; moxaDriver.write = moxa_write; moxaDriver.write_room = moxa_write_room; moxaDriver.flush_buffer = moxa_flush_buffer; moxaDriver.chars_in_buffer = moxa_chars_in_buffer; moxaDriver.flush_chars = moxa_flush_chars; moxaDriver.put_char = moxa_put_char; moxaDriver.ioctl = moxa_ioctl; moxaDriver.throttle = moxa_throttle; moxaDriver.unthrottle = moxa_unthrottle; moxaDriver.set_termios = moxa_set_termios; moxaDriver.stop = moxa_stop; moxaDriver.start = moxa_start; moxaDriver.hangup = moxa_hangup; moxaCallout = moxaDriver; moxaCallout.name = "ttyA"; moxaCallout.major = calloutmajor; moxaCallout.subtype = SERIAL_TYPE_CALLOUT; moxaXmitBuff = 0; for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) { ch->type = PORT_16550A; ch->port = i; ch->tqueue.routine = do_moxa_softint; ch->tqueue.data = ch; ch->tty = 0; ch->close_delay = 5 * HZ / 10; ch->closing_wait = 30 * HZ; ch->count = 0; ch->blocked_open = 0; ch->callout_termios = moxaCallout.init_termios; ch->normal_termios = moxaDriver.init_termios; 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, callout devices major number = %d\n", ttymajor, calloutmajor); ret1 = 0; ret2 = 0; if ((ret1 = tty_register_driver(&moxaDriver))) { printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n"); } else if ((ret2 = tty_register_driver(&moxaCallout))) { tty_unregister_driver(&moxaDriver); printk(KERN_ERR "Couldn't install MOXA Smartio family callout driver !\n"); } if (ret1 || ret2) { 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; n = sizeof(moxa_pcibrds) / sizeof(moxa_pciinfo); i = 0; while (i < n) { while((p = pci_find_device(moxa_pcibrds[i].vendor_id, moxa_pcibrds[i].device_id, 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].board_type, &moxa_boards[numBoards]); numBoards++; } } i++; } } #endif for (i = 0; i < numBoards; i++) { moxaBaseAddr[i] = (unsigned long) ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000); } return (0); } 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); } static void do_moxa_softint(void *private_) { struct moxa_str *ch = (struct moxa_str *) private_; struct tty_struct *tty; if (!ch || !(tty = ch->tty)) return; if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) { tty_hangup(tty); wake_up_interruptible(&ch->open_wait); ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_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) { MOD_INC_USE_COUNT; return (0); } if (!MoxaPortIsValid(port)) { tty->driver_data = NULL; return (-ENODEV); } down(&moxaBuffSem); if (!moxaXmitBuff) { page = get_free_page(GFP_KERNEL); if (!page) { up(&moxaBuffSem); return (-ENOMEM); } if (moxaXmitBuff) free_page(page); else moxaXmitBuff = (unsigned char *) page; } up(&moxaBuffSem); MOD_INC_USE_COUNT; ch = &moxaChannels[port]; ch->count++; tty->driver_data = ch; ch->tty = tty; if (ch->count == 1 && (ch->asyncflags & ASYNC_SPLIT_TERMIOS)) { if (tty->driver.subtype == SERIAL_TYPE_NORMAL) *tty->termios = ch->normal_termios; else *tty->termios = ch->callout_termios; } ch->session = current->session; ch->pgrp = current->pgrp; 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) { MOD_DEC_USE_COUNT; 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)) { MOD_DEC_USE_COUNT; 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, minor=%d\n", MINOR(tty->device)); ch->count = 0; } if (ch->count) { MOD_DEC_USE_COUNT; return; } ch->asyncflags |= ASYNC_CLOSING; /* * Save the termios structure, since this port may have * separate termios for callout and dialin. */ if (ch->asyncflags & ASYNC_NORMAL_ACTIVE) ch->normal_termios = *tty->termios; if (ch->asyncflags & ASYNC_CALLOUT_ACTIVE) ch->callout_termios = *tty->termios; 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); if (tty->ldisc.flush_buffer) tty->ldisc.flush_buffer(tty); tty->closing = 0; ch->event = 0; ch->tty = 0; if (ch->blocked_open) { if (ch->close_delay) { current->state = TASK_INTERRUPTIBLE; schedule_timeout(ch->close_delay); } wake_up_interruptible(&ch->open_wait); } ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE | ASYNC_CLOSING); wake_up_interruptible(&ch->close_wait); MOD_DEC_USE_COUNT; } static int moxa_write(struct tty_struct *tty, int from_user, const unsigned char *buf, int count) { struct moxa_str *ch; int len, port; unsigned long flags; unsigned char *temp; ch = (struct moxa_str *) tty->driver_data; if (ch == NULL) return (0); port = ch->port; save_flags(flags); cli(); if (from_user) { copy_from_user(moxaXmitBuff, buf, count); temp = moxaXmitBuff; } else temp = (unsigned char *) buf; len = MoxaPortWriteData(port, temp, 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); if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) (tty->ldisc.write_wakeup) (tty); wake_up_interruptible(&tty->write_wait); } 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_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; int retval, dtr, rts; unsigned long flag; 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 *) arg); case TIOCSSOFTCAR: if(get_user(retval, (unsigned long *) arg)) 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 TIOCMGET: flag = 0; 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 put_user(flag, (unsigned int *) arg); case TIOCMBIS: if(get_user(retval, (unsigned int *) arg)) return -EFAULT; MoxaPortGetLineOut(ch->port, &dtr, &rts); if (retval & TIOCM_RTS) rts = 1; if (retval & TIOCM_DTR) dtr = 1; MoxaPortLineCtrl(ch->port, dtr, rts); return (0); case TIOCMBIC: if(get_user(retval, (unsigned int *) arg)) return -EFAULT; MoxaPortGetLineOut(ch->port, &dtr, &rts); if (retval & TIOCM_RTS) rts = 0; if (retval & TIOCM_DTR) dtr = 0; MoxaPortLineCtrl(ch->port, dtr, rts); return (0); case TIOCMSET: if(get_user(retval, (unsigned long *) arg)) return -EFAULT; dtr = rts = 0; if (retval & TIOCM_RTS) rts = 1; if (retval & TIOCM_DTR) dtr = 1; MoxaPortLineCtrl(ch->port, dtr, rts); return (0); case TIOCGSERIAL: return (moxa_get_serial_info(ch, (struct serial_struct *) arg)); case TIOCSSERIAL: return (moxa_set_serial_info(ch, (struct serial_struct *) arg)); 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 | ASYNC_CALLOUT_ACTIVE); ch->tty = 0; 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; if ((tp->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tp->ldisc.write_wakeup) (tp->ldisc.write_wakeup) (tp); wake_up_interruptible(&tp->write_wait); } } } 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); queue_task(&ch->tqueue, &tq_scheduler); } } } } } 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 this is a callout device, then just make sure the normal * device isn't being used. */ if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) { if (ch->asyncflags & ASYNC_NORMAL_ACTIVE) return (-EBUSY); if ((ch->asyncflags & ASYNC_CALLOUT_ACTIVE) && (ch->asyncflags & ASYNC_SESSION_LOCKOUT) && (ch->session != current->session)) return (-EBUSY); if ((ch->asyncflags & ASYNC_CALLOUT_ACTIVE) && (ch->asyncflags & ASYNC_PGRP_LOCKOUT) && (ch->pgrp != current->pgrp)) return (-EBUSY); ch->asyncflags |= ASYNC_CALLOUT_ACTIVE; return (0); } /* * If non-blocking mode is set, then make the check up front * and then exit. */ if (filp->f_flags & O_NONBLOCK) { if (ch->asyncflags & ASYNC_CALLOUT_ACTIVE) return (-EBUSY); 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) { 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_CALLOUT_ACTIVE) && !(ch->asyncflags & ASYNC_CLOSING) && (do_clocal || MoxaPortDCDON(ch->port))) break; if (signal_pending(current)) { retval = -ERESTARTSYS; break; } schedule(); } 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; if ((ch->tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && ch->tty->ldisc.write_wakeup) (ch->tty->ldisc.write_wakeup) (ch->tty); wake_up_interruptible(&ch->tty->write_wait); 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 = 0; 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 unsigned long moxaIntNdx[MAX_BOARDS]; static unsigned long moxaIntPend[MAX_BOARDS]; static unsigned long moxaIntTable[MAX_BOARDS]; static char moxaChkPort[MAX_PORTS]; static char moxaLineCtrl[MAX_PORTS]; static unsigned long 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(unsigned long, int, ushort); static void wait_finish(unsigned long); static void low_water_check(unsigned long); static int moxaloadbios(int, unsigned char *, int); static int moxafindcard(int); static int moxaload320b(int, unsigned char *, int); static int moxaloadcode(int, unsigned char *, int); static int moxaloadc218(int, unsigned long, int); static int moxaloadc320(int, unsigned long, 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 *buf; int len; int cardno; }; static struct moxaq_str temp_queue[MAX_PORTS]; static struct dl_str dltmp; void MoxaPortFlushData(int port, int mode) { unsigned long 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); 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((void *)arg, &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((void *)arg, &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((void *)arg, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS)) return -EFAULT; return (0); case MOXA_LOAD_BIOS: if(copy_from_user(&dltmp, (void *)arg, sizeof(struct dl_str))) return -EFAULT; i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len); return (i); case MOXA_FIND_BOARD: if(copy_from_user(&dltmp, (void *)arg, sizeof(struct dl_str))) return -EFAULT; return moxafindcard(dltmp.cardno); case MOXA_LOAD_C320B: if(copy_from_user(&dltmp, (void *)arg, sizeof(struct dl_str))) return -EFAULT; moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len); return (0); case MOXA_LOAD_CODE: if(copy_from_user(&dltmp, (void *)arg, sizeof(struct dl_str))) return -EFAULT; i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len); if (i == -1) return (-EFAULT); return (i); case MOXA_GET_OQUEUE: i = MoxaPortTxQueue(port); return put_user(i, (unsigned long *) arg); case MOXA_GET_IQUEUE: i = MoxaPortRxQueue(port); return put_user(i, (unsigned long *) arg); case MOXA_GET_MAJOR: if(copy_to_user((void *)arg, &ttymajor, sizeof(int))) return -EFAULT; return 0; case MOXA_GET_CUMAJOR: if(copy_to_user((void *)arg, &calloutmajor, 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].normal_termios.c_cflag; else GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag; } if(copy_to_user((void *)arg, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS)) return -EFAULT; return 0; } return (-ENOIOCTLCMD); } int MoxaDriverPoll(void) { register ushort temp; register int card; unsigned long ip, ofsAddr; 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) { unsigned long 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) { unsigned long ofsAddr; 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) { unsigned long 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) { unsigned long 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) { unsigned long 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) { unsigned long 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) { unsigned long 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; unsigned long 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; unsigned long 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) { unsigned long 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) { unsigned long 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) { unsigned long 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) { unsigned long ofsAddr; ofsAddr = moxaTableAddr[port]; moxafunc(ofsAddr, FC_SetXoffState, Magic_code); } void MoxaPortTxEnable(int port) { unsigned long 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) { unsigned long 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 *retinfo) { struct serial_struct tmp; if (!retinfo) return (-EFAULT); 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 *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 (!suser()) { 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 (jiffies < et); } static void moxafunc(unsigned long ofsAddr, int cmd, ushort arg) { writew(arg, ofsAddr + FuncArg); writew(cmd, ofsAddr + FuncCode); wait_finish(ofsAddr); } static void wait_finish(unsigned long ofsAddr) { unsigned long i, j; i = jiffies; while (readw(ofsAddr + FuncCode) != 0) { j = jiffies; if ((j - i) > moxaFuncTout) { return; } } } static void low_water_check(unsigned long 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 *tmp, int len) { unsigned long 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) { unsigned long 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 * tmp, int len) { unsigned long baseAddr; int i; 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 * tmp, int len) { unsigned long 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, unsigned long 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, unsigned long 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); } long MoxaPortGetCurBaud(int port) { if (moxaChkPort[port] == 0) return (0); return (moxaCurBaud[port]); } static void MoxaSetFifo(int port, int enable) { unsigned long 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) { unsigned long 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) { unsigned long ofsAddr; int size; ofsAddr = moxaTableAddr[port]; size = readw(ofsAddr + TX_mask); return (size); } int MoxaPortRxBufSize(int port) { unsigned long ofsAddr; int size; ofsAddr = moxaTableAddr[port]; size = readw(ofsAddr + RX_mask); return (size); } int MoxaPortRxFree(int port) { unsigned long 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) { unsigned long ofsAddr; ofsAddr = moxaTableAddr[port]; writew(xonValue, ofsAddr + FuncArg); writew(xoffValue, ofsAddr + FuncArg1); writew(FC_SetXonXoff, ofsAddr + FuncCode); wait_finish(ofsAddr); } int MoxaPortIsTxHold(int port) { unsigned long 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 |