+++ /dev/null
-/*****************************************************************************/
-/*
- * moxa.c -- MOXA Intellio family multiport serial driver.
- *
- * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com).
- * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com>
- *
- * 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.
- */
-
-/*
- * MOXA Intellio Series Driver
- * for : LINUX
- * date : 1999/1/7
- * version : 5.1
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/ioport.h>
-#include <linux/errno.h>
-#include <linux/firmware.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 <linux/slab.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
-#include "moxa.h"
-
-#define MOXA_VERSION "6.0k"
-
-#define MOXA_FW_HDRLEN 32
-
-#define MOXAMAJOR 172
-
-#define MAX_BOARDS 4 /* Don't change this value */
-#define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
-#define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD)
-
-#define MOXA_IS_320(brd) ((brd)->boardType == MOXA_BOARD_C320_ISA || \
- (brd)->boardType == MOXA_BOARD_C320_PCI)
-
-/*
- * Define the Moxa PCI vendor and device IDs.
- */
-#define MOXA_BUS_TYPE_ISA 0
-#define MOXA_BUS_TYPE_PCI 1
-
-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_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218),
- .driver_data = MOXA_BOARD_C218_PCI },
- { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320),
- .driver_data = MOXA_BOARD_C320_PCI },
- { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J),
- .driver_data = MOXA_BOARD_CP204J },
- { 0 }
-};
-MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
-#endif /* CONFIG_PCI */
-
-struct moxa_port;
-
-static struct moxa_board_conf {
- int boardType;
- int numPorts;
- int busType;
-
- unsigned int ready;
-
- struct moxa_port *ports;
-
- void __iomem *basemem;
- void __iomem *intNdx;
- void __iomem *intPend;
- void __iomem *intTable;
-} moxa_boards[MAX_BOARDS];
-
-struct mxser_mstatus {
- tcflag_t cflag;
- int cts;
- int dsr;
- int ri;
- int dcd;
-};
-
-struct moxaq_str {
- int inq;
- int outq;
-};
-
-struct moxa_port {
- struct tty_port port;
- struct moxa_board_conf *board;
- void __iomem *tableAddr;
-
- int type;
- int cflag;
- unsigned long statusflags;
-
- u8 DCDState; /* Protected by the port lock */
- u8 lineCtrl;
- u8 lowChkFlag;
-};
-
-struct mon_str {
- int tick;
- int rxcnt[MAX_PORTS];
- int txcnt[MAX_PORTS];
-};
-
-/* statusflags */
-#define TXSTOPPED 1
-#define LOWWAIT 2
-#define EMPTYWAIT 3
-
-#define SERIAL_DO_RESTART
-
-#define WAKEUP_CHARS 256
-
-static int ttymajor = MOXAMAJOR;
-static struct mon_str moxaLog;
-static unsigned int moxaFuncTout = HZ / 2;
-static unsigned int moxaLowWaterChk;
-static DEFINE_MUTEX(moxa_openlock);
-static DEFINE_SPINLOCK(moxa_lock);
-
-static unsigned long baseaddr[MAX_BOARDS];
-static unsigned int type[MAX_BOARDS];
-static unsigned int numports[MAX_BOARDS];
-
-MODULE_AUTHOR("William Chen");
-MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
-MODULE_LICENSE("GPL");
-MODULE_FIRMWARE("c218tunx.cod");
-MODULE_FIRMWARE("cp204unx.cod");
-MODULE_FIRMWARE("c320tunx.cod");
-
-module_param_array(type, uint, NULL, 0);
-MODULE_PARM_DESC(type, "card type: C218=2, C320=4");
-module_param_array(baseaddr, ulong, NULL, 0);
-MODULE_PARM_DESC(baseaddr, "base address");
-module_param_array(numports, uint, NULL, 0);
-MODULE_PARM_DESC(numports, "numports (ignored for C218)");
-
-module_param(ttymajor, int, 0);
-
-/*
- * static functions:
- */
-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_set_termios(struct tty_struct *, struct ktermios *);
-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);
-static int moxa_tiocmset(struct tty_struct *tty,
- unsigned int set, unsigned int clear);
-static void moxa_poll(unsigned long);
-static void moxa_set_tty_param(struct tty_struct *, struct ktermios *);
-static void moxa_shutdown(struct tty_port *);
-static int moxa_carrier_raised(struct tty_port *);
-static void moxa_dtr_rts(struct tty_port *, int);
-/*
- * moxa board interface functions:
- */
-static void MoxaPortEnable(struct moxa_port *);
-static void MoxaPortDisable(struct moxa_port *);
-static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t);
-static int MoxaPortGetLineOut(struct moxa_port *, int *, int *);
-static void MoxaPortLineCtrl(struct moxa_port *, int, int);
-static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int);
-static int MoxaPortLineStatus(struct moxa_port *);
-static void MoxaPortFlushData(struct moxa_port *, int);
-static int MoxaPortWriteData(struct tty_struct *, const unsigned char *, int);
-static int MoxaPortReadData(struct moxa_port *);
-static int MoxaPortTxQueue(struct moxa_port *);
-static int MoxaPortRxQueue(struct moxa_port *);
-static int MoxaPortTxFree(struct moxa_port *);
-static void MoxaPortTxDisable(struct moxa_port *);
-static void MoxaPortTxEnable(struct moxa_port *);
-static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *);
-static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *);
-static void MoxaSetFifo(struct moxa_port *port, int enable);
-
-/*
- * I/O functions
- */
-
-static DEFINE_SPINLOCK(moxafunc_lock);
-
-static void moxa_wait_finish(void __iomem *ofsAddr)
-{
- unsigned long end = jiffies + moxaFuncTout;
-
- while (readw(ofsAddr + FuncCode) != 0)
- if (time_after(jiffies, end))
- return;
- if (readw(ofsAddr + FuncCode) != 0 && printk_ratelimit())
- printk(KERN_WARNING "moxa function expired\n");
-}
-
-static void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg)
-{
- unsigned long flags;
- spin_lock_irqsave(&moxafunc_lock, flags);
- writew(arg, ofsAddr + FuncArg);
- writew(cmd, ofsAddr + FuncCode);
- moxa_wait_finish(ofsAddr);
- spin_unlock_irqrestore(&moxafunc_lock, flags);
-}
-
-static int moxafuncret(void __iomem *ofsAddr, u16 cmd, u16 arg)
-{
- unsigned long flags;
- u16 ret;
- spin_lock_irqsave(&moxafunc_lock, flags);
- writew(arg, ofsAddr + FuncArg);
- writew(cmd, ofsAddr + FuncCode);
- moxa_wait_finish(ofsAddr);
- ret = readw(ofsAddr + FuncArg);
- spin_unlock_irqrestore(&moxafunc_lock, flags);
- return ret;
-}
-
-static void moxa_low_water_check(void __iomem *ofsAddr)
-{
- u16 rptr, wptr, mask, len;
-
- 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);
- }
-}
-
-/*
- * TTY operations
- */
-
-static int moxa_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
-{
- struct moxa_port *ch = tty->driver_data;
- void __user *argp = (void __user *)arg;
- int status, ret = 0;
-
- if (tty->index == MAX_PORTS) {
- if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE &&
- cmd != MOXA_GETMSTATUS)
- return -EINVAL;
- } else if (!ch)
- return -ENODEV;
-
- switch (cmd) {
- case MOXA_GETDATACOUNT:
- moxaLog.tick = jiffies;
- if (copy_to_user(argp, &moxaLog, sizeof(moxaLog)))
- ret = -EFAULT;
- break;
- case MOXA_FLUSH_QUEUE:
- MoxaPortFlushData(ch, arg);
- break;
- case MOXA_GET_IOQUEUE: {
- struct moxaq_str __user *argm = argp;
- struct moxaq_str tmp;
- struct moxa_port *p;
- unsigned int i, j;
-
- for (i = 0; i < MAX_BOARDS; i++) {
- p = moxa_boards[i].ports;
- for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) {
- memset(&tmp, 0, sizeof(tmp));
- spin_lock_bh(&moxa_lock);
- if (moxa_boards[i].ready) {
- tmp.inq = MoxaPortRxQueue(p);
- tmp.outq = MoxaPortTxQueue(p);
- }
- spin_unlock_bh(&moxa_lock);
- if (copy_to_user(argm, &tmp, sizeof(tmp)))
- return -EFAULT;
- }
- }
- break;
- } case MOXA_GET_OQUEUE:
- status = MoxaPortTxQueue(ch);
- ret = put_user(status, (unsigned long __user *)argp);
- break;
- case MOXA_GET_IQUEUE:
- status = MoxaPortRxQueue(ch);
- ret = put_user(status, (unsigned long __user *)argp);
- break;
- case MOXA_GETMSTATUS: {
- struct mxser_mstatus __user *argm = argp;
- struct mxser_mstatus tmp;
- struct moxa_port *p;
- unsigned int i, j;
-
- for (i = 0; i < MAX_BOARDS; i++) {
- p = moxa_boards[i].ports;
- for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) {
- struct tty_struct *ttyp;
- memset(&tmp, 0, sizeof(tmp));
- spin_lock_bh(&moxa_lock);
- if (!moxa_boards[i].ready) {
- spin_unlock_bh(&moxa_lock);
- goto copy;
- }
-
- status = MoxaPortLineStatus(p);
- spin_unlock_bh(&moxa_lock);
-
- if (status & 1)
- tmp.cts = 1;
- if (status & 2)
- tmp.dsr = 1;
- if (status & 4)
- tmp.dcd = 1;
-
- ttyp = tty_port_tty_get(&p->port);
- if (!ttyp || !ttyp->termios)
- tmp.cflag = p->cflag;
- else
- tmp.cflag = ttyp->termios->c_cflag;
- tty_kref_put(tty);
-copy:
- if (copy_to_user(argm, &tmp, sizeof(tmp)))
- return -EFAULT;
- }
- }
- break;
- }
- case TIOCGSERIAL:
- mutex_lock(&ch->port.mutex);
- ret = moxa_get_serial_info(ch, argp);
- mutex_unlock(&ch->port.mutex);
- break;
- case TIOCSSERIAL:
- mutex_lock(&ch->port.mutex);
- ret = moxa_set_serial_info(ch, argp);
- mutex_unlock(&ch->port.mutex);
- break;
- default:
- ret = -ENOIOCTLCMD;
- }
- return ret;
-}
-
-static int moxa_break_ctl(struct tty_struct *tty, int state)
-{
- struct moxa_port *port = tty->driver_data;
-
- moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak,
- Magic_code);
- return 0;
-}
-
-static const 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,
- .ioctl = moxa_ioctl,
- .set_termios = moxa_set_termios,
- .stop = moxa_stop,
- .start = moxa_start,
- .hangup = moxa_hangup,
- .break_ctl = moxa_break_ctl,
- .tiocmget = moxa_tiocmget,
- .tiocmset = moxa_tiocmset,
-};
-
-static const struct tty_port_operations moxa_port_ops = {
- .carrier_raised = moxa_carrier_raised,
- .dtr_rts = moxa_dtr_rts,
- .shutdown = moxa_shutdown,
-};
-
-static struct tty_driver *moxaDriver;
-static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0);
-
-/*
- * HW init
- */
-
-static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model)
-{
- switch (brd->boardType) {
- case MOXA_BOARD_C218_ISA:
- case MOXA_BOARD_C218_PCI:
- if (model != 1)
- goto err;
- break;
- case MOXA_BOARD_CP204J:
- if (model != 3)
- goto err;
- break;
- default:
- if (model != 2)
- goto err;
- break;
- }
- return 0;
-err:
- return -EINVAL;
-}
-
-static int moxa_check_fw(const void *ptr)
-{
- const __le16 *lptr = ptr;
-
- if (*lptr != cpu_to_le16(0x7980))
- return -EINVAL;
-
- return 0;
-}
-
-static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf,
- size_t len)
-{
- void __iomem *baseAddr = brd->basemem;
- u16 tmp;
-
- writeb(HW_reset, baseAddr + Control_reg); /* reset */
- msleep(10);
- memset_io(baseAddr, 0, 4096);
- memcpy_toio(baseAddr, buf, len); /* download BIOS */
- writeb(0, baseAddr + Control_reg); /* restart */
-
- msleep(2000);
-
- switch (brd->boardType) {
- case MOXA_BOARD_C218_ISA:
- case MOXA_BOARD_C218_PCI:
- tmp = readw(baseAddr + C218_key);
- if (tmp != C218_KeyCode)
- goto err;
- break;
- case MOXA_BOARD_CP204J:
- tmp = readw(baseAddr + C218_key);
- if (tmp != CP204J_KeyCode)
- goto err;
- break;
- default:
- tmp = readw(baseAddr + C320_key);
- if (tmp != C320_KeyCode)
- goto err;
- tmp = readw(baseAddr + C320_status);
- if (tmp != STS_init) {
- printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic "
- "module not found\n");
- return -EIO;
- }
- break;
- }
-
- return 0;
-err:
- printk(KERN_ERR "MOXA: bios upload failed -- board not found\n");
- return -EIO;
-}
-
-static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr,
- size_t len)
-{
- void __iomem *baseAddr = brd->basemem;
-
- if (len < 7168) {
- printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n");
- return -EINVAL;
- }
-
- writew(len - 7168 - 2, baseAddr + C320bapi_len);
- writeb(1, baseAddr + Control_reg); /* Select Page 1 */
- memcpy_toio(baseAddr + DynPage_addr, ptr, 7168);
- writeb(2, baseAddr + Control_reg); /* Select Page 2 */
- memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168);
-
- return 0;
-}
-
-static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr,
- size_t len)
-{
- void __iomem *baseAddr = brd->basemem;
- const __le16 *uptr = ptr;
- size_t wlen, len2, j;
- unsigned long key, loadbuf, loadlen, checksum, checksum_ok;
- unsigned int i, retry;
- u16 usum, keycode;
-
- keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode :
- C218_KeyCode;
-
- switch (brd->boardType) {
- case MOXA_BOARD_CP204J:
- case MOXA_BOARD_C218_ISA:
- case MOXA_BOARD_C218_PCI:
- key = C218_key;
- loadbuf = C218_LoadBuf;
- loadlen = C218DLoad_len;
- checksum = C218check_sum;
- checksum_ok = C218chksum_ok;
- break;
- default:
- key = C320_key;
- keycode = C320_KeyCode;
- loadbuf = C320_LoadBuf;
- loadlen = C320DLoad_len;
- checksum = C320check_sum;
- checksum_ok = C320chksum_ok;
- break;
- }
-
- usum = 0;
- wlen = len >> 1;
- for (i = 0; i < wlen; i++)
- usum += le16_to_cpu(uptr[i]);
- retry = 0;
- do {
- wlen = len >> 1;
- j = 0;
- while (wlen) {
- len2 = (wlen > 2048) ? 2048 : wlen;
- wlen -= len2;
- memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1);
- j += len2 << 1;
-
- writew(len2, baseAddr + loadlen);
- writew(0, baseAddr + key);
- for (i = 0; i < 100; i++) {
- if (readw(baseAddr + key) == keycode)
- break;
- msleep(10);
- }
- if (readw(baseAddr + key) != keycode)
- return -EIO;
- }
- writew(0, baseAddr + loadlen);
- writew(usum, baseAddr + checksum);
- writew(0, baseAddr + key);
- for (i = 0; i < 100; i++) {
- if (readw(baseAddr + key) == keycode)
- break;
- msleep(10);
- }
- retry++;
- } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3));
- if (readb(baseAddr + checksum_ok) != 1)
- return -EIO;
-
- writew(0, baseAddr + key);
- for (i = 0; i < 600; i++) {
- if (readw(baseAddr + Magic_no) == Magic_code)
- break;
- msleep(10);
- }
- if (readw(baseAddr + Magic_no) != Magic_code)
- return -EIO;
-
- if (MOXA_IS_320(brd)) {
- if (brd->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;
- msleep(10);
- }
- if (readw(baseAddr + Magic_no) != Magic_code)
- return -EIO;
-
- if (MOXA_IS_320(brd)) {
- j = readw(baseAddr + Module_cnt);
- if (j <= 0)
- return -EIO;
- brd->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;
- msleep(10);
- }
- if (readw(baseAddr + Magic_no) != Magic_code)
- return -EIO;
- }
- brd->intNdx = baseAddr + IRQindex;
- brd->intPend = baseAddr + IRQpending;
- brd->intTable = baseAddr + IRQtable;
-
- return 0;
-}
-
-static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr,
- size_t len)
-{
- void __iomem *ofsAddr, *baseAddr = brd->basemem;
- struct moxa_port *port;
- int retval, i;
-
- if (len % 2) {
- printk(KERN_ERR "MOXA: bios length is not even\n");
- return -EINVAL;
- }
-
- retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */
- if (retval)
- return retval;
-
- switch (brd->boardType) {
- case MOXA_BOARD_C218_ISA:
- case MOXA_BOARD_C218_PCI:
- case MOXA_BOARD_CP204J:
- port = brd->ports;
- for (i = 0; i < brd->numPorts; i++, port++) {
- port->board = brd;
- port->DCDState = 0;
- port->tableAddr = baseAddr + Extern_table +
- Extern_size * i;
- ofsAddr = port->tableAddr;
- 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:
- port = brd->ports;
- for (i = 0; i < brd->numPorts; i++, port++) {
- port->board = brd;
- port->DCDState = 0;
- port->tableAddr = baseAddr + Extern_table +
- Extern_size * i;
- ofsAddr = port->tableAddr;
- switch (brd->numPorts) {
- case 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);
-
- break;
- case 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);
- break;
-
- case 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);
- break;
- case 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;
- }
- }
- break;
- }
- return 0;
-}
-
-static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw)
-{
- const void *ptr = fw->data;
- char rsn[64];
- u16 lens[5];
- size_t len;
- unsigned int a, lenp, lencnt;
- int ret = -EINVAL;
- struct {
- __le32 magic; /* 0x34303430 */
- u8 reserved1[2];
- u8 type; /* UNIX = 3 */
- u8 model; /* C218T=1, C320T=2, CP204=3 */
- u8 reserved2[8];
- __le16 len[5];
- } const *hdr = ptr;
-
- BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens));
-
- if (fw->size < MOXA_FW_HDRLEN) {
- strcpy(rsn, "too short (even header won't fit)");
- goto err;
- }
- if (hdr->magic != cpu_to_le32(0x30343034)) {
- sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic));
- goto err;
- }
- if (hdr->type != 3) {
- sprintf(rsn, "not for linux, type is %u", hdr->type);
- goto err;
- }
- if (moxa_check_fw_model(brd, hdr->model)) {
- sprintf(rsn, "not for this card, model is %u", hdr->model);
- goto err;
- }
-
- len = MOXA_FW_HDRLEN;
- lencnt = hdr->model == 2 ? 5 : 3;
- for (a = 0; a < ARRAY_SIZE(lens); a++) {
- lens[a] = le16_to_cpu(hdr->len[a]);
- if (lens[a] && len + lens[a] <= fw->size &&
- moxa_check_fw(&fw->data[len]))
- printk(KERN_WARNING "MOXA firmware: unexpected input "
- "at offset %u, but going on\n", (u32)len);
- if (!lens[a] && a < lencnt) {
- sprintf(rsn, "too few entries in fw file");
- goto err;
- }
- len += lens[a];
- }
-
- if (len != fw->size) {
- sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size,
- (u32)len);
- goto err;
- }
-
- ptr += MOXA_FW_HDRLEN;
- lenp = 0; /* bios */
-
- strcpy(rsn, "read above");
-
- ret = moxa_load_bios(brd, ptr, lens[lenp]);
- if (ret)
- goto err;
-
- /* we skip the tty section (lens[1]), since we don't need it */
- ptr += lens[lenp] + lens[lenp + 1];
- lenp += 2; /* comm */
-
- if (hdr->model == 2) {
- ret = moxa_load_320b(brd, ptr, lens[lenp]);
- if (ret)
- goto err;
- /* skip another tty */
- ptr += lens[lenp] + lens[lenp + 1];
- lenp += 2;
- }
-
- ret = moxa_load_code(brd, ptr, lens[lenp]);
- if (ret)
- goto err;
-
- return 0;
-err:
- printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn);
- return ret;
-}
-
-static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev)
-{
- const struct firmware *fw;
- const char *file;
- struct moxa_port *p;
- unsigned int i;
- int ret;
-
- brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports),
- GFP_KERNEL);
- if (brd->ports == NULL) {
- printk(KERN_ERR "cannot allocate memory for ports\n");
- ret = -ENOMEM;
- goto err;
- }
-
- for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) {
- tty_port_init(&p->port);
- p->port.ops = &moxa_port_ops;
- p->type = PORT_16550A;
- p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
- }
-
- switch (brd->boardType) {
- case MOXA_BOARD_C218_ISA:
- case MOXA_BOARD_C218_PCI:
- file = "c218tunx.cod";
- break;
- case MOXA_BOARD_CP204J:
- file = "cp204unx.cod";
- break;
- default:
- file = "c320tunx.cod";
- break;
- }
-
- ret = request_firmware(&fw, file, dev);
- if (ret) {
- printk(KERN_ERR "MOXA: request_firmware failed. Make sure "
- "you've placed '%s' file into your firmware "
- "loader directory (e.g. /lib/firmware)\n",
- file);
- goto err_free;
- }
-
- ret = moxa_load_fw(brd, fw);
-
- release_firmware(fw);
-
- if (ret)
- goto err_free;
-
- spin_lock_bh(&moxa_lock);
- brd->ready = 1;
- if (!timer_pending(&moxaTimer))
- mod_timer(&moxaTimer, jiffies + HZ / 50);
- spin_unlock_bh(&moxa_lock);
-
- return 0;
-err_free:
- kfree(brd->ports);
-err:
- return ret;
-}
-
-static void moxa_board_deinit(struct moxa_board_conf *brd)
-{
- unsigned int a, opened;
-
- mutex_lock(&moxa_openlock);
- spin_lock_bh(&moxa_lock);
- brd->ready = 0;
- spin_unlock_bh(&moxa_lock);
-
- /* pci hot-un-plug support */
- for (a = 0; a < brd->numPorts; a++)
- if (brd->ports[a].port.flags & ASYNC_INITIALIZED) {
- struct tty_struct *tty = tty_port_tty_get(
- &brd->ports[a].port);
- if (tty) {
- tty_hangup(tty);
- tty_kref_put(tty);
- }
- }
- while (1) {
- opened = 0;
- for (a = 0; a < brd->numPorts; a++)
- if (brd->ports[a].port.flags & ASYNC_INITIALIZED)
- opened++;
- mutex_unlock(&moxa_openlock);
- if (!opened)
- break;
- msleep(50);
- mutex_lock(&moxa_openlock);
- }
-
- iounmap(brd->basemem);
- brd->basemem = NULL;
- kfree(brd->ports);
-}
-
-#ifdef CONFIG_PCI
-static int __devinit moxa_pci_probe(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- struct moxa_board_conf *board;
- unsigned int i;
- int board_type = ent->driver_data;
- int retval;
-
- retval = pci_enable_device(pdev);
- if (retval) {
- dev_err(&pdev->dev, "can't enable pci device\n");
- goto err;
- }
-
- for (i = 0; i < MAX_BOARDS; i++)
- if (moxa_boards[i].basemem == NULL)
- break;
-
- retval = -ENODEV;
- if (i >= MAX_BOARDS) {
- dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards "
- "found. Board is ignored.\n", MAX_BOARDS);
- goto err;
- }
-
- board = &moxa_boards[i];
-
- retval = pci_request_region(pdev, 2, "moxa-base");
- if (retval) {
- dev_err(&pdev->dev, "can't request pci region 2\n");
- goto err;
- }
-
- board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000);
- if (board->basemem == NULL) {
- dev_err(&pdev->dev, "can't remap io space 2\n");
- goto err_reg;
- }
-
- 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;
-
- retval = moxa_init_board(board, &pdev->dev);
- if (retval)
- goto err_base;
-
- pci_set_drvdata(pdev, board);
-
- dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n",
- moxa_brdname[board_type - 1], board->numPorts);
-
- return 0;
-err_base:
- iounmap(board->basemem);
- board->basemem = NULL;
-err_reg:
- pci_release_region(pdev, 2);
-err:
- return retval;
-}
-
-static void __devexit moxa_pci_remove(struct pci_dev *pdev)
-{
- struct moxa_board_conf *brd = pci_get_drvdata(pdev);
-
- moxa_board_deinit(brd);
-
- pci_release_region(pdev, 2);
-}
-
-static struct pci_driver moxa_pci_driver = {
- .name = "moxa",
- .id_table = moxa_pcibrds,
- .probe = moxa_pci_probe,
- .remove = __devexit_p(moxa_pci_remove)
-};
-#endif /* CONFIG_PCI */
-
-static int __init moxa_init(void)
-{
- unsigned int isabrds = 0;
- int retval = 0;
- struct moxa_board_conf *brd = moxa_boards;
- unsigned int i;
-
- printk(KERN_INFO "MOXA Intellio family driver version %s\n",
- MOXA_VERSION);
- moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
- if (!moxaDriver)
- return -ENOMEM;
-
- moxaDriver->owner = THIS_MODULE;
- moxaDriver->name = "ttyMX";
- 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_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
- moxaDriver->init_termios.c_ispeed = 9600;
- moxaDriver->init_termios.c_ospeed = 9600;
- moxaDriver->flags = TTY_DRIVER_REAL_RAW;
- tty_set_operations(moxaDriver, &moxa_ops);
-
- if (tty_register_driver(moxaDriver)) {
- printk(KERN_ERR "can't register MOXA Smartio tty driver!\n");
- put_tty_driver(moxaDriver);
- return -1;
- }
-
- /* Find the boards defined from module args. */
-
- for (i = 0; i < MAX_BOARDS; i++) {
- if (!baseaddr[i])
- break;
- if (type[i] == MOXA_BOARD_C218_ISA ||
- type[i] == MOXA_BOARD_C320_ISA) {
- pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n",
- isabrds + 1, moxa_brdname[type[i] - 1],
- baseaddr[i]);
- brd->boardType = type[i];
- brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 :
- numports[i];
- brd->busType = MOXA_BUS_TYPE_ISA;
- brd->basemem = ioremap_nocache(baseaddr[i], 0x4000);
- if (!brd->basemem) {
- printk(KERN_ERR "MOXA: can't remap %lx\n",
- baseaddr[i]);
- continue;
- }
- if (moxa_init_board(brd, NULL)) {
- iounmap(brd->basemem);
- brd->basemem = NULL;
- continue;
- }
-
- printk(KERN_INFO "MOXA isa board found at 0x%.8lu and "
- "ready (%u ports, firmware loaded)\n",
- baseaddr[i], brd->numPorts);
-
- brd++;
- isabrds++;
- }
- }
-
-#ifdef CONFIG_PCI
- retval = pci_register_driver(&moxa_pci_driver);
- if (retval) {
- printk(KERN_ERR "Can't register MOXA pci driver!\n");
- if (isabrds)
- retval = 0;
- }
-#endif
-
- return retval;
-}
-
-static void __exit moxa_exit(void)
-{
- unsigned int i;
-
-#ifdef CONFIG_PCI
- pci_unregister_driver(&moxa_pci_driver);
-#endif
-
- for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */
- if (moxa_boards[i].ready)
- moxa_board_deinit(&moxa_boards[i]);
-
- del_timer_sync(&moxaTimer);
-
- if (tty_unregister_driver(moxaDriver))
- printk(KERN_ERR "Couldn't unregister MOXA Intellio family "
- "serial driver\n");
- put_tty_driver(moxaDriver);
-}
-
-module_init(moxa_init);
-module_exit(moxa_exit);
-
-static void moxa_shutdown(struct tty_port *port)
-{
- struct moxa_port *ch = container_of(port, struct moxa_port, port);
- MoxaPortDisable(ch);
- MoxaPortFlushData(ch, 2);
- clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags);
-}
-
-static int moxa_carrier_raised(struct tty_port *port)
-{
- struct moxa_port *ch = container_of(port, struct moxa_port, port);
- int dcd;
-
- spin_lock_irq(&port->lock);
- dcd = ch->DCDState;
- spin_unlock_irq(&port->lock);
- return dcd;
-}
-
-static void moxa_dtr_rts(struct tty_port *port, int onoff)
-{
- struct moxa_port *ch = container_of(port, struct moxa_port, port);
- MoxaPortLineCtrl(ch, onoff, onoff);
-}
-
-
-static int moxa_open(struct tty_struct *tty, struct file *filp)
-{
- struct moxa_board_conf *brd;
- struct moxa_port *ch;
- int port;
- int retval;
-
- port = tty->index;
- if (port == MAX_PORTS) {
- return capable(CAP_SYS_ADMIN) ? 0 : -EPERM;
- }
- if (mutex_lock_interruptible(&moxa_openlock))
- return -ERESTARTSYS;
- brd = &moxa_boards[port / MAX_PORTS_PER_BOARD];
- if (!brd->ready) {
- mutex_unlock(&moxa_openlock);
- return -ENODEV;
- }
-
- if (port % MAX_PORTS_PER_BOARD >= brd->numPorts) {
- mutex_unlock(&moxa_openlock);
- return -ENODEV;
- }
-
- ch = &brd->ports[port % MAX_PORTS_PER_BOARD];
- ch->port.count++;
- tty->driver_data = ch;
- tty_port_tty_set(&ch->port, tty);
- mutex_lock(&ch->port.mutex);
- if (!(ch->port.flags & ASYNC_INITIALIZED)) {
- ch->statusflags = 0;
- moxa_set_tty_param(tty, tty->termios);
- MoxaPortLineCtrl(ch, 1, 1);
- MoxaPortEnable(ch);
- MoxaSetFifo(ch, ch->type == PORT_16550A);
- ch->port.flags |= ASYNC_INITIALIZED;
- }
- mutex_unlock(&ch->port.mutex);
- mutex_unlock(&moxa_openlock);
-
- retval = tty_port_block_til_ready(&ch->port, tty, filp);
- if (retval == 0)
- set_bit(ASYNCB_NORMAL_ACTIVE, &ch->port.flags);
- return retval;
-}
-
-static void moxa_close(struct tty_struct *tty, struct file *filp)
-{
- struct moxa_port *ch = tty->driver_data;
- ch->cflag = tty->termios->c_cflag;
- tty_port_close(&ch->port, tty, filp);
-}
-
-static int moxa_write(struct tty_struct *tty,
- const unsigned char *buf, int count)
-{
- struct moxa_port *ch = tty->driver_data;
- int len;
-
- if (ch == NULL)
- return 0;
-
- spin_lock_bh(&moxa_lock);
- len = MoxaPortWriteData(tty, buf, count);
- spin_unlock_bh(&moxa_lock);
-
- set_bit(LOWWAIT, &ch->statusflags);
- return len;
-}
-
-static int moxa_write_room(struct tty_struct *tty)
-{
- struct moxa_port *ch;
-
- if (tty->stopped)
- return 0;
- ch = tty->driver_data;
- if (ch == NULL)
- return 0;
- return MoxaPortTxFree(ch);
-}
-
-static void moxa_flush_buffer(struct tty_struct *tty)
-{
- struct moxa_port *ch = tty->driver_data;
-
- if (ch == NULL)
- return;
- MoxaPortFlushData(ch, 1);
- tty_wakeup(tty);
-}
-
-static int moxa_chars_in_buffer(struct tty_struct *tty)
-{
- struct moxa_port *ch = tty->driver_data;
- int chars;
-
- chars = MoxaPortTxQueue(ch);
- if (chars)
- /*
- * Make it possible to wakeup anything waiting for output
- * in tty_ioctl.c, etc.
- */
- set_bit(EMPTYWAIT, &ch->statusflags);
- return chars;
-}
-
-static int moxa_tiocmget(struct tty_struct *tty)
-{
- struct moxa_port *ch = tty->driver_data;
- int flag = 0, dtr, rts;
-
- MoxaPortGetLineOut(ch, &dtr, &rts);
- if (dtr)
- flag |= TIOCM_DTR;
- if (rts)
- flag |= TIOCM_RTS;
- dtr = MoxaPortLineStatus(ch);
- 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,
- unsigned int set, unsigned int clear)
-{
- struct moxa_port *ch;
- int port;
- int dtr, rts;
-
- port = tty->index;
- mutex_lock(&moxa_openlock);
- ch = tty->driver_data;
- if (!ch) {
- mutex_unlock(&moxa_openlock);
- return -EINVAL;
- }
-
- MoxaPortGetLineOut(ch, &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, dtr, rts);
- mutex_unlock(&moxa_openlock);
- return 0;
-}
-
-static void moxa_set_termios(struct tty_struct *tty,
- struct ktermios *old_termios)
-{
- struct moxa_port *ch = tty->driver_data;
-
- if (ch == NULL)
- return;
- moxa_set_tty_param(tty, old_termios);
- if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty))
- wake_up_interruptible(&ch->port.open_wait);
-}
-
-static void moxa_stop(struct tty_struct *tty)
-{
- struct moxa_port *ch = tty->driver_data;
-
- if (ch == NULL)
- return;
- MoxaPortTxDisable(ch);
- set_bit(TXSTOPPED, &ch->statusflags);
-}
-
-
-static void moxa_start(struct tty_struct *tty)
-{
- struct moxa_port *ch = tty->driver_data;
-
- if (ch == NULL)
- return;
-
- if (!(ch->statusflags & TXSTOPPED))
- return;
-
- MoxaPortTxEnable(ch);
- clear_bit(TXSTOPPED, &ch->statusflags);
-}
-
-static void moxa_hangup(struct tty_struct *tty)
-{
- struct moxa_port *ch = tty->driver_data;
- tty_port_hangup(&ch->port);
-}
-
-static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd)
-{
- struct tty_struct *tty;
- unsigned long flags;
- dcd = !!dcd;
-
- spin_lock_irqsave(&p->port.lock, flags);
- if (dcd != p->DCDState) {
- p->DCDState = dcd;
- spin_unlock_irqrestore(&p->port.lock, flags);
- tty = tty_port_tty_get(&p->port);
- if (tty && C_CLOCAL(tty) && !dcd)
- tty_hangup(tty);
- tty_kref_put(tty);
- }
- else
- spin_unlock_irqrestore(&p->port.lock, flags);
-}
-
-static int moxa_poll_port(struct moxa_port *p, unsigned int handle,
- u16 __iomem *ip)
-{
- struct tty_struct *tty = tty_port_tty_get(&p->port);
- void __iomem *ofsAddr;
- unsigned int inited = p->port.flags & ASYNC_INITIALIZED;
- u16 intr;
-
- if (tty) {
- if (test_bit(EMPTYWAIT, &p->statusflags) &&
- MoxaPortTxQueue(p) == 0) {
- clear_bit(EMPTYWAIT, &p->statusflags);
- tty_wakeup(tty);
- }
- if (test_bit(LOWWAIT, &p->statusflags) && !tty->stopped &&
- MoxaPortTxQueue(p) <= WAKEUP_CHARS) {
- clear_bit(LOWWAIT, &p->statusflags);
- tty_wakeup(tty);
- }
-
- if (inited && !test_bit(TTY_THROTTLED, &tty->flags) &&
- MoxaPortRxQueue(p) > 0) { /* RX */
- MoxaPortReadData(p);
- tty_schedule_flip(tty);
- }
- } else {
- clear_bit(EMPTYWAIT, &p->statusflags);
- MoxaPortFlushData(p, 0); /* flush RX */
- }
-
- if (!handle) /* nothing else to do */
- goto put;
-
- intr = readw(ip); /* port irq status */
- if (intr == 0)
- goto put;
-
- writew(0, ip); /* ACK port */
- ofsAddr = p->tableAddr;
- if (intr & IntrTx) /* disable tx intr */
- writew(readw(ofsAddr + HostStat) & ~WakeupTx,
- ofsAddr + HostStat);
-
- if (!inited)
- goto put;
-
- if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */
- tty_insert_flip_char(tty, 0, TTY_BREAK);
- tty_schedule_flip(tty);
- }
-
- if (intr & IntrLine)
- moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state);
-put:
- tty_kref_put(tty);
-
- return 0;
-}
-
-static void moxa_poll(unsigned long ignored)
-{
- struct moxa_board_conf *brd;
- u16 __iomem *ip;
- unsigned int card, port, served = 0;
-
- spin_lock(&moxa_lock);
- for (card = 0; card < MAX_BOARDS; card++) {
- brd = &moxa_boards[card];
- if (!brd->ready)
- continue;
-
- served++;
-
- ip = NULL;
- if (readb(brd->intPend) == 0xff)
- ip = brd->intTable + readb(brd->intNdx);
-
- for (port = 0; port < brd->numPorts; port++)
- moxa_poll_port(&brd->ports[port], !!ip, ip + port);
-
- if (ip)
- writeb(0, brd->intPend); /* ACK */
-
- if (moxaLowWaterChk) {
- struct moxa_port *p = brd->ports;
- for (port = 0; port < brd->numPorts; port++, p++)
- if (p->lowChkFlag) {
- p->lowChkFlag = 0;
- moxa_low_water_check(p->tableAddr);
- }
- }
- }
- moxaLowWaterChk = 0;
-
- if (served)
- mod_timer(&moxaTimer, jiffies + HZ / 50);
- spin_unlock(&moxa_lock);
-}
-
-/******************************************************************************/
-
-static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios)
-{
- register struct ktermios *ts = tty->termios;
- struct moxa_port *ch = tty->driver_data;
- int rts, cts, txflow, rxflow, xany, baud;
-
- 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;
-
- /* Clear the features we don't support */
- ts->c_cflag &= ~CMSPAR;
- MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany);
- baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty));
- if (baud == -1)
- baud = tty_termios_baud_rate(old_termios);
- /* Not put the baud rate into the termios data */
- tty_encode_baud_rate(tty, baud, baud);
-}
-
-/*****************************************************************************
- * Driver level functions: *
- *****************************************************************************/
-
-static void MoxaPortFlushData(struct moxa_port *port, int mode)
-{
- void __iomem *ofsAddr;
- if (mode < 0 || mode > 2)
- return;
- ofsAddr = port->tableAddr;
- moxafunc(ofsAddr, FC_FlushQueue, mode);
- if (mode != 1) {
- port->lowChkFlag = 0;
- moxa_low_water_check(ofsAddr);
- }
-}
-
-/*
- * 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 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 10: Setting baud rate of this port.
- * Syntax:
- * speed_t MoxaPortSetBaud(int port, speed_t 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 12: Configure the port.
- * Syntax:
- * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
- * int port : port number (0 - 127)
- * struct ktermios * termio : termio structure pointer
- * speed_t baud : baud rate
- *
- * 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 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 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 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 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
- *
- *
- */
-
-static void MoxaPortEnable(struct moxa_port *port)
-{
- void __iomem *ofsAddr;
- u16 lowwater = 512;
-
- ofsAddr = port->tableAddr;
- writew(lowwater, ofsAddr + Low_water);
- if (MOXA_IS_320(port->board))
- 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);
-}
-
-static void MoxaPortDisable(struct moxa_port *port)
-{
- void __iomem *ofsAddr = port->tableAddr;
-
- moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
- moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
- writew(0, ofsAddr + HostStat);
- moxafunc(ofsAddr, FC_DisableCH, Magic_code);
-}
-
-static speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud)
-{
- void __iomem *ofsAddr = port->tableAddr;
- unsigned int clock, val;
- speed_t max;
-
- max = MOXA_IS_320(port->board) ? 460800 : 921600;
- if (baud < 50)
- return 0;
- if (baud > max)
- baud = max;
- clock = 921600;
- val = clock / baud;
- moxafunc(ofsAddr, FC_SetBaud, val);
- baud = clock / val;
- return baud;
-}
-
-static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio,
- speed_t baud)
-{
- void __iomem *ofsAddr;
- tcflag_t cflag;
- tcflag_t mode = 0;
-
- ofsAddr = port->tableAddr;
- 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, (u16)mode);
-
- if (MOXA_IS_320(port->board) && baud >= 921600)
- return -1;
-
- baud = MoxaPortSetBaud(port, baud);
-
- if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
- spin_lock_irq(&moxafunc_lock);
- writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
- writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
- writeb(FC_SetXonXoff, ofsAddr + FuncCode);
- moxa_wait_finish(ofsAddr);
- spin_unlock_irq(&moxafunc_lock);
-
- }
- return baud;
-}
-
-static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState,
- int *rtsState)
-{
- if (dtrState)
- *dtrState = !!(port->lineCtrl & DTR_ON);
- if (rtsState)
- *rtsState = !!(port->lineCtrl & RTS_ON);
-
- return 0;
-}
-
-static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts)
-{
- u8 mode = 0;
-
- if (dtr)
- mode |= DTR_ON;
- if (rts)
- mode |= RTS_ON;
- port->lineCtrl = mode;
- moxafunc(port->tableAddr, FC_LineControl, mode);
-}
-
-static void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts,
- int txflow, int rxflow, int txany)
-{
- int 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(port->tableAddr, FC_SetFlowCtl, mode);
-}
-
-static int MoxaPortLineStatus(struct moxa_port *port)
-{
- void __iomem *ofsAddr;
- int val;
-
- ofsAddr = port->tableAddr;
- if (MOXA_IS_320(port->board))
- val = moxafuncret(ofsAddr, FC_LineStatus, 0);
- else
- val = readw(ofsAddr + FlagStat) >> 4;
- val &= 0x0B;
- if (val & 8)
- val |= 4;
- moxa_new_dcdstate(port, val & 8);
- val &= 7;
- return val;
-}
-
-static int MoxaPortWriteData(struct tty_struct *tty,
- const unsigned char *buffer, int len)
-{
- struct moxa_port *port = tty->driver_data;
- void __iomem *baseAddr, *ofsAddr, *ofs;
- unsigned int c, total;
- u16 head, tail, tx_mask, spage, epage;
- u16 pageno, pageofs, bufhead;
-
- ofsAddr = port->tableAddr;
- baseAddr = port->board->basemem;
- 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->port.tty->index] += 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;
- memcpy_toio(ofs, buffer, len);
- buffer += len;
- tail = (tail + len) & tx_mask;
- c -= len;
- }
- } else {
- pageno = spage + (tail >> 13);
- pageofs = tail & Page_mask;
- while (c > 0) {
- len = Page_size - pageofs;
- if (len > c)
- len = c;
- writeb(pageno, baseAddr + Control_reg);
- ofs = baseAddr + DynPage_addr + pageofs;
- memcpy_toio(ofs, buffer, len);
- buffer += len;
- if (++pageno == epage)
- pageno = spage;
- pageofs = 0;
- c -= len;
- }
- tail = (tail + total) & tx_mask;
- }
- writew(tail, ofsAddr + TXwptr);
- writeb(1, ofsAddr + CD180TXirq); /* start to send */
- return total;
-}
-
-static int MoxaPortReadData(struct moxa_port *port)
-{
- struct tty_struct *tty = port->port.tty;
- unsigned char *dst;
- void __iomem *baseAddr, *ofsAddr, *ofs;
- unsigned int count, len, total;
- u16 tail, rx_mask, spage, epage;
- u16 pageno, pageofs, bufhead, head;
-
- ofsAddr = port->tableAddr;
- baseAddr = port->board->basemem;
- 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;
- moxaLog.rxcnt[tty->index] += total;
- if (spage == epage) {
- bufhead = readw(ofsAddr + Ofs_rxb);
- writew(spage, baseAddr + Control_reg);
- while (count > 0) {
- ofs = baseAddr + DynPage_addr + bufhead + head;
- len = (tail >= head) ? (tail - head) :
- (rx_mask + 1 - head);
- len = tty_prepare_flip_string(tty, &dst,
- min(len, count));
- memcpy_fromio(dst, ofs, len);
- head = (head + len) & rx_mask;
- count -= len;
- }
- } else {
- pageno = spage + (head >> 13);
- pageofs = head & Page_mask;
- while (count > 0) {
- writew(pageno, baseAddr + Control_reg);
- ofs = baseAddr + DynPage_addr + pageofs;
- len = tty_prepare_flip_string(tty, &dst,
- min(Page_size - pageofs, count));
- memcpy_fromio(dst, ofs, len);
-
- count -= len;
- pageofs = (pageofs + len) & Page_mask;
- if (pageofs == 0 && ++pageno == epage)
- pageno = spage;
- }
- head = (head + total) & rx_mask;
- }
- writew(head, ofsAddr + RXrptr);
- if (readb(ofsAddr + FlagStat) & Xoff_state) {
- moxaLowWaterChk = 1;
- port->lowChkFlag = 1;
- }
- return total;
-}
-
-
-static int MoxaPortTxQueue(struct moxa_port *port)
-{
- void __iomem *ofsAddr = port->tableAddr;
- u16 rptr, wptr, mask;
-
- rptr = readw(ofsAddr + TXrptr);
- wptr = readw(ofsAddr + TXwptr);
- mask = readw(ofsAddr + TX_mask);
- return (wptr - rptr) & mask;
-}
-
-static int MoxaPortTxFree(struct moxa_port *port)
-{
- void __iomem *ofsAddr = port->tableAddr;
- u16 rptr, wptr, mask;
-
- rptr = readw(ofsAddr + TXrptr);
- wptr = readw(ofsAddr + TXwptr);
- mask = readw(ofsAddr + TX_mask);
- return mask - ((wptr - rptr) & mask);
-}
-
-static int MoxaPortRxQueue(struct moxa_port *port)
-{
- void __iomem *ofsAddr = port->tableAddr;
- u16 rptr, wptr, mask;
-
- rptr = readw(ofsAddr + RXrptr);
- wptr = readw(ofsAddr + RXwptr);
- mask = readw(ofsAddr + RX_mask);
- return (wptr - rptr) & mask;
-}
-
-static void MoxaPortTxDisable(struct moxa_port *port)
-{
- moxafunc(port->tableAddr, FC_SetXoffState, Magic_code);
-}
-
-static void MoxaPortTxEnable(struct moxa_port *port)
-{
- moxafunc(port->tableAddr, FC_SetXonState, Magic_code);
-}
-
-static int moxa_get_serial_info(struct moxa_port *info,
- struct serial_struct __user *retinfo)
-{
- struct serial_struct tmp = {
- .type = info->type,
- .line = info->port.tty->index,
- .flags = info->port.flags,
- .baud_base = 921600,
- .close_delay = info->port.close_delay
- };
- return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
-}
-
-
-static int moxa_set_serial_info(struct moxa_port *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.custom_divisor != 0 ||
- new_serial.baud_base != 921600)
- return -EPERM;
-
- if (!capable(CAP_SYS_ADMIN)) {
- if (((new_serial.flags & ~ASYNC_USR_MASK) !=
- (info->port.flags & ~ASYNC_USR_MASK)))
- return -EPERM;
- } else
- info->port.close_delay = new_serial.close_delay * HZ / 100;
-
- new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
- new_serial.flags |= (info->port.flags & ASYNC_FLAGS);
-
- MoxaSetFifo(info, new_serial.type == PORT_16550A);
-
- info->type = new_serial.type;
- return 0;
-}
-
-
-
-/*****************************************************************************
- * Static local functions: *
- *****************************************************************************/
-
-static void MoxaSetFifo(struct moxa_port *port, int enable)
-{
- void __iomem *ofsAddr = port->tableAddr;
-
- if (!enable) {
- moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
- moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
- } else {
- moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
- moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
- }
-}
git.openpandora.org / pandora-kernel.git / blobdiff