patch-2.1.71 linux/drivers/net/baycom_ser_hdx.c

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diff -u --recursive --new-file v2.1.70/linux/drivers/net/baycom_ser_hdx.c linux/drivers/net/baycom_ser_hdx.c
@@ -1,792 +0,0 @@
-/*****************************************************************************/
-
-/*
- *	baycom_ser_hdx.c  -- baycom ser12 halfduplex radio modem driver.
- *
- *	Copyright (C) 1997  Thomas Sailer (sailer@ife.ee.ethz.ch)
- *
- *	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.
- *
- *  Please note that the GPL allows you to use the driver, NOT the radio.
- *  In order to use the radio, you need a license from the communications
- *  authority of your country.
- *
- *
- *  Supported modems
- *
- *  ser12:  This is a very simple 1200 baud AFSK modem. The modem consists only
- *          of a modulator/demodulator chip, usually a TI TCM3105. The computer
- *          is responsible for regenerating the receiver bit clock, as well as
- *          for handling the HDLC protocol. The modem connects to a serial port,
- *          hence the name. Since the serial port is not used as an async serial
- *          port, the kernel driver for serial ports cannot be used, and this
- *          driver only supports standard serial hardware (8250, 16450, 16550A)
- *
- *
- *  Command line options (insmod command line)
- *
- *  mode     * enables software DCD.
- *  iobase   base address of the port; common values are 0x3f8, 0x2f8, 0x3e8, 0x2e8
- *  irq      interrupt line of the port; common values are 4,3
- *
- *
- *  History:
- *   0.1  26.06.96  Adapted from baycom.c and made network driver interface
- *        18.10.96  Changed to new user space access routines (copy_{to,from}_user)
- *   0.3  26.04.97  init code/data tagged
- *   0.4  08.07.97  alternative ser12 decoding algorithm (uses delta CTS ints)
- *   0.5  11.11.97  ser12/par96 split into separate files
- */
-
-/*****************************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/string.h>
-#include <asm/system.h>
-#include <asm/bitops.h>
-#include <asm/io.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/hdlcdrv.h>
-#include <linux/baycom.h>
-
-/* --------------------------------------------------------------------- */
-
-/*
- * currently this module is supposed to support both module styles, i.e.
- * the old one present up to about 2.1.9, and the new one functioning
- * starting with 2.1.21. The reason is I have a kit allowing to compile
- * this module also under 2.0.x which was requested by several people.
- * This will go in 2.2
- */
-#include <linux/version.h>
-
-#if LINUX_VERSION_CODE >= 0x20100
-#include <asm/uaccess.h>
-#else
-#include <asm/segment.h>
-#include <linux/mm.h>
-
-#undef put_user
-#undef get_user
-
-#define put_user(x,ptr) ({ __put_user((unsigned long)(x),(ptr),sizeof(*(ptr))); 0; })
-#define get_user(x,ptr) ({ x = ((__typeof__(*(ptr)))__get_user((ptr),sizeof(*(ptr)))); 0; })
-
-extern inline int copy_from_user(void *to, const void *from, unsigned long n)
-{
-        int i = verify_area(VERIFY_READ, from, n);
-        if (i)
-                return i;
-        memcpy_fromfs(to, from, n);
-        return 0;
-}
-
-extern inline int copy_to_user(void *to, const void *from, unsigned long n)
-{
-        int i = verify_area(VERIFY_WRITE, to, n);
-        if (i)
-                return i;
-        memcpy_tofs(to, from, n);
-        return 0;
-}
-#endif
-
-#if LINUX_VERSION_CODE >= 0x20123
-#include <linux/init.h>
-#else
-#define __init
-#define __initdata
-#define __initfunc(x) x
-#endif
-
-/* --------------------------------------------------------------------- */
-
-#define BAYCOM_DEBUG
-
-/*
- * modem options; bit mask
- */
-#define BAYCOM_OPTIONS_SOFTDCD  1
-
-/* --------------------------------------------------------------------- */
-
-static const char bc_drvname[] = "baycom_ser_hdx";
-static const char bc_drvinfo[] = KERN_INFO "baycom_ser_hdx: (C) 1997 Thomas Sailer, HB9JNX/AE4WA\n"
-KERN_INFO "baycom_ser_hdx: version 0.5 compiled " __TIME__ " " __DATE__ "\n";
-
-/* --------------------------------------------------------------------- */
-
-#define NR_PORTS 4
-
-static struct device baycom_device[NR_PORTS];
-
-static struct {
-	char *mode;
-	int iobase, irq;
-} baycom_ports[NR_PORTS] = { { NULL, 0, 0 }, };
-
-/* --------------------------------------------------------------------- */
-
-#define RBR(iobase) (iobase+0)
-#define THR(iobase) (iobase+0)
-#define IER(iobase) (iobase+1)
-#define IIR(iobase) (iobase+2)
-#define FCR(iobase) (iobase+2)
-#define LCR(iobase) (iobase+3)
-#define MCR(iobase) (iobase+4)
-#define LSR(iobase) (iobase+5)
-#define MSR(iobase) (iobase+6)
-#define SCR(iobase) (iobase+7)
-#define DLL(iobase) (iobase+0)
-#define DLM(iobase) (iobase+1)
-
-#define SER12_EXTENT 8
-
-/* ---------------------------------------------------------------------- */
-/*
- * Information that need to be kept for each board.
- */
-
-struct baycom_state {
-	struct hdlcdrv_state hdrv;
-
-	unsigned int options;
-
-	struct modem_state {
-		short arb_divider;
-		unsigned char flags;
-		unsigned int shreg;
-		struct modem_state_ser12 {
-			unsigned char tx_bit;
-			int dcd_sum0, dcd_sum1, dcd_sum2;
-			unsigned char last_sample;
-			unsigned char last_rxbit;
-			unsigned int dcd_shreg;
-			unsigned int dcd_time;
-			unsigned int bit_pll;
-			unsigned char interm_sample;
-		} ser12;
-	} modem;
-
-#ifdef BAYCOM_DEBUG
-	struct debug_vals {
-		unsigned long last_jiffies;
-		unsigned cur_intcnt;
-		unsigned last_intcnt;
-		int cur_pllcorr;
-		int last_pllcorr;
-	} debug_vals;
-#endif /* BAYCOM_DEBUG */
-};
-
-/* --------------------------------------------------------------------- */
-
-#define min(a, b) (((a) < (b)) ? (a) : (b))
-#define max(a, b) (((a) > (b)) ? (a) : (b))
-
-/* --------------------------------------------------------------------- */
-
-static void inline baycom_int_freq(struct baycom_state *bc)
-{
-#ifdef BAYCOM_DEBUG
-	unsigned long cur_jiffies = jiffies;
-	/*
-	 * measure the interrupt frequency
-	 */
-	bc->debug_vals.cur_intcnt++;
-	if ((cur_jiffies - bc->debug_vals.last_jiffies) >= HZ) {
-		bc->debug_vals.last_jiffies = cur_jiffies;
-		bc->debug_vals.last_intcnt = bc->debug_vals.cur_intcnt;
-		bc->debug_vals.cur_intcnt = 0;
-		bc->debug_vals.last_pllcorr = bc->debug_vals.cur_pllcorr;
-		bc->debug_vals.cur_pllcorr = 0;
-	}
-#endif /* BAYCOM_DEBUG */
-}
-
-/* --------------------------------------------------------------------- */
-/*
- * ===================== SER12 specific routines =========================
- */
-
-static void inline ser12_set_divisor(struct device *dev,
-				     unsigned char divisor)
-{
-	outb(0x81, LCR(dev->base_addr));	/* DLAB = 1 */
-	outb(divisor, DLL(dev->base_addr));
-	outb(0, DLM(dev->base_addr));
-	outb(0x01, LCR(dev->base_addr));	/* word length = 6 */
-	/*
-	 * make sure the next interrupt is generated;
-	 * 0 must be used to power the modem; the modem draws its
-	 * power from the TxD line
-	 */
-	outb(0x00, THR(dev->base_addr));
-	/*
-	 * it is important not to set the divider while transmitting;
-	 * this reportedly makes some UARTs generating interrupts
-	 * in the hundredthousands per second region
-	 * Reported by: Ignacio.Arenaza@studi.epfl.ch (Ignacio Arenaza Nuno)
-	 */
-}
-
-/* --------------------------------------------------------------------- */
-
-/*
- * must call the TX arbitrator every 10ms
- */
-#define SER12_ARB_DIVIDER(bc) ((bc->options & BAYCOM_OPTIONS_SOFTDCD) ? \
-			       36 : 24)
-#define SER12_DCD_INTERVAL(bc) ((bc->options & BAYCOM_OPTIONS_SOFTDCD) ? \
-				240 : 12)
-
-static inline void ser12_tx(struct device *dev, struct baycom_state *bc)
-{
-	/* one interrupt per channel bit */
-	ser12_set_divisor(dev, 12);
-	/*
-	 * first output the last bit (!) then call HDLC transmitter,
-	 * since this may take quite long
-	 */
-	outb(0x0e | (!!bc->modem.ser12.tx_bit), MCR(dev->base_addr));
-	if (bc->modem.shreg <= 1)
-		bc->modem.shreg = 0x10000 | hdlcdrv_getbits(&bc->hdrv);
-	bc->modem.ser12.tx_bit = !(bc->modem.ser12.tx_bit ^
-				   (bc->modem.shreg & 1));
-	bc->modem.shreg >>= 1;
-}
-
-/* --------------------------------------------------------------------- */
-
-static inline void ser12_rx(struct device *dev, struct baycom_state *bc)
-{
-	unsigned char cur_s;
-	/*
-	 * do demodulator
-	 */
-	cur_s = inb(MSR(dev->base_addr)) & 0x10;	/* the CTS line */
-	hdlcdrv_channelbit(&bc->hdrv, cur_s);
-	bc->modem.ser12.dcd_shreg = (bc->modem.ser12.dcd_shreg << 1) |
-		(cur_s != bc->modem.ser12.last_sample);
-	bc->modem.ser12.last_sample = cur_s;
-	if(bc->modem.ser12.dcd_shreg & 1) {
-		if (bc->options & BAYCOM_OPTIONS_SOFTDCD) {
-			unsigned int dcdspos, dcdsneg;
-
-			dcdspos = dcdsneg = 0;
-			dcdspos += ((bc->modem.ser12.dcd_shreg >> 1) & 1);
-			if (!(bc->modem.ser12.dcd_shreg & 0x7ffffffe))
-				dcdspos += 2;
-			dcdsneg += ((bc->modem.ser12.dcd_shreg >> 2) & 1);
-			dcdsneg += ((bc->modem.ser12.dcd_shreg >> 3) & 1);
-			dcdsneg += ((bc->modem.ser12.dcd_shreg >> 4) & 1);
-
-			bc->modem.ser12.dcd_sum0 += 16*dcdspos - dcdsneg;
-		} else
-			bc->modem.ser12.dcd_sum0--;
-	}
-	if(!bc->modem.ser12.dcd_time) {
-		hdlcdrv_setdcd(&bc->hdrv, (bc->modem.ser12.dcd_sum0 +
-					   bc->modem.ser12.dcd_sum1 +
-					   bc->modem.ser12.dcd_sum2) < 0);
-		bc->modem.ser12.dcd_sum2 = bc->modem.ser12.dcd_sum1;
-		bc->modem.ser12.dcd_sum1 = bc->modem.ser12.dcd_sum0;
-		/* offset to ensure DCD off on silent input */
-		bc->modem.ser12.dcd_sum0 = 2;
-		bc->modem.ser12.dcd_time = SER12_DCD_INTERVAL(bc);
-	}
-	bc->modem.ser12.dcd_time--;
-	if (bc->options & BAYCOM_OPTIONS_SOFTDCD) {
-		/*
-		 * PLL code for the improved software DCD algorithm
-		 */
-		if (bc->modem.ser12.interm_sample) {
-			/*
-			 * intermediate sample; set timing correction to normal
-			 */
-			ser12_set_divisor(dev, 4);
-		} else {
-			/*
-			 * do PLL correction and call HDLC receiver
-			 */
-			switch (bc->modem.ser12.dcd_shreg & 7) {
-			case 1: /* transition too late */
-				ser12_set_divisor(dev, 5);
-#ifdef BAYCOM_DEBUG
-				bc->debug_vals.cur_pllcorr++;
-#endif /* BAYCOM_DEBUG */
-				break;
-			case 4:	/* transition too early */
-				ser12_set_divisor(dev, 3);
-#ifdef BAYCOM_DEBUG
-				bc->debug_vals.cur_pllcorr--;
-#endif /* BAYCOM_DEBUG */
-				break;
-			default:
-				ser12_set_divisor(dev, 4);
-				break;
-			}
-			bc->modem.shreg >>= 1;
-			if (bc->modem.ser12.last_sample ==
-			    bc->modem.ser12.last_rxbit)
-				bc->modem.shreg |= 0x10000;
-			bc->modem.ser12.last_rxbit =
-				bc->modem.ser12.last_sample;
-		}
-		if (++bc->modem.ser12.interm_sample >= 3)
-			bc->modem.ser12.interm_sample = 0;
-		/*
-		 * DCD stuff
-		 */
-		if (bc->modem.ser12.dcd_shreg & 1) {
-			unsigned int dcdspos, dcdsneg;
-
-			dcdspos = dcdsneg = 0;
-			dcdspos += ((bc->modem.ser12.dcd_shreg >> 1) & 1);
-			dcdspos += (!(bc->modem.ser12.dcd_shreg & 0x7ffffffe))
-				<< 1;
-			dcdsneg += ((bc->modem.ser12.dcd_shreg >> 2) & 1);
-			dcdsneg += ((bc->modem.ser12.dcd_shreg >> 3) & 1);
-			dcdsneg += ((bc->modem.ser12.dcd_shreg >> 4) & 1);
-
-			bc->modem.ser12.dcd_sum0 += 16*dcdspos - dcdsneg;
-		}
-	} else {
-		/*
-		 * PLL algorithm for the hardware squelch DCD algorithm
-		 */
-		if (bc->modem.ser12.interm_sample) {
-			/*
-			 * intermediate sample; set timing correction to normal
-			 */
-			ser12_set_divisor(dev, 6);
-		} else {
-			/*
-			 * do PLL correction and call HDLC receiver
-			 */
-			switch (bc->modem.ser12.dcd_shreg & 3) {
-			case 1: /* transition too late */
-				ser12_set_divisor(dev, 7);
-#ifdef BAYCOM_DEBUG
-				bc->debug_vals.cur_pllcorr++;
-#endif /* BAYCOM_DEBUG */
-				break;
-			case 2:	/* transition too early */
-				ser12_set_divisor(dev, 5);
-#ifdef BAYCOM_DEBUG
-				bc->debug_vals.cur_pllcorr--;
-#endif /* BAYCOM_DEBUG */
-				break;
-			default:
-				ser12_set_divisor(dev, 6);
-				break;
-			}
-			bc->modem.shreg >>= 1;
-			if (bc->modem.ser12.last_sample ==
-			    bc->modem.ser12.last_rxbit)
-				bc->modem.shreg |= 0x10000;
-			bc->modem.ser12.last_rxbit =
-				bc->modem.ser12.last_sample;
-		}
-		bc->modem.ser12.interm_sample = !bc->modem.ser12.interm_sample;
-		/*
-		 * DCD stuff
-		 */
-		bc->modem.ser12.dcd_sum0 -= (bc->modem.ser12.dcd_shreg & 1);
-	}
-	outb(0x0d, MCR(dev->base_addr));		/* transmitter off */
-	if (bc->modem.shreg & 1) {
-		hdlcdrv_putbits(&bc->hdrv, bc->modem.shreg >> 1);
-		bc->modem.shreg = 0x10000;
-	}
-	if(!bc->modem.ser12.dcd_time) {
-		hdlcdrv_setdcd(&bc->hdrv, (bc->modem.ser12.dcd_sum0 +
-					   bc->modem.ser12.dcd_sum1 +
-					   bc->modem.ser12.dcd_sum2) < 0);
-		bc->modem.ser12.dcd_sum2 = bc->modem.ser12.dcd_sum1;
-		bc->modem.ser12.dcd_sum1 = bc->modem.ser12.dcd_sum0;
-		/* offset to ensure DCD off on silent input */
-		bc->modem.ser12.dcd_sum0 = 2;
-		bc->modem.ser12.dcd_time = SER12_DCD_INTERVAL(bc);
-	}
-	bc->modem.ser12.dcd_time--;
-}
-
-/* --------------------------------------------------------------------- */
-
-static void ser12_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
-	struct device *dev = (struct device *)dev_id;
-	struct baycom_state *bc = (struct baycom_state *)dev->priv;
-
-	if (!dev || !bc || bc->hdrv.magic != HDLCDRV_MAGIC)
-		return;
-
-	baycom_int_freq(bc);
-	/*
-	 * check if transmitter active
-	 */
-	if (hdlcdrv_ptt(&bc->hdrv))
-		ser12_tx(dev, bc);
-	else {
-		ser12_rx(dev, bc);
-		if (--bc->modem.arb_divider <= 0) {
-			bc->modem.arb_divider = SER12_ARB_DIVIDER(bc);
-			sti();
-			hdlcdrv_arbitrate(dev, &bc->hdrv);
-		}
-	}
-	sti();
-	hdlcdrv_transmitter(dev, &bc->hdrv);
-	hdlcdrv_receiver(dev, &bc->hdrv);
-}
-
-/* --------------------------------------------------------------------- */
-
-enum uart { c_uart_unknown, c_uart_8250,
-	    c_uart_16450, c_uart_16550, c_uart_16550A};
-static const char *uart_str[] = { 
-	"unknown", "8250", "16450", "16550", "16550A" 
-};
-
-static enum uart ser12_check_uart(unsigned int iobase)
-{
-	unsigned char b1,b2,b3;
-	enum uart u;
-	enum uart uart_tab[] =
-		{ c_uart_16450, c_uart_unknown, c_uart_16550, c_uart_16550A };
-
-	b1 = inb(MCR(iobase));
-	outb(b1 | 0x10, MCR(iobase));	/* loopback mode */
-	b2 = inb(MSR(iobase));
-	outb(0x1a, MCR(iobase));
-	b3 = inb(MSR(iobase)) & 0xf0;
-	outb(b1, MCR(iobase));			/* restore old values */
-	outb(b2, MSR(iobase));
-	if (b3 != 0x90)
-		return c_uart_unknown;
-	inb(RBR(iobase));
-	inb(RBR(iobase));
-	outb(0x01, FCR(iobase));		/* enable FIFOs */
-	u = uart_tab[(inb(IIR(iobase)) >> 6) & 3];
-	if (u == c_uart_16450) {
-		outb(0x5a, SCR(iobase));
-		b1 = inb(SCR(iobase));
-		outb(0xa5, SCR(iobase));
-		b2 = inb(SCR(iobase));
-		if ((b1 != 0x5a) || (b2 != 0xa5))
-			u = c_uart_8250;
-	}
-	return u;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int ser12_open(struct device *dev)
-{
-	struct baycom_state *bc = (struct baycom_state *)dev->priv;
-	enum uart u;
-
-	if (!dev || !bc)
-		return -ENXIO;
-	if (!dev->base_addr || dev->base_addr > 0x1000-SER12_EXTENT ||
-	    dev->irq < 2 || dev->irq > 15)
-		return -ENXIO;
-	if (check_region(dev->base_addr, SER12_EXTENT))
-		return -EACCES;
-	memset(&bc->modem, 0, sizeof(bc->modem));
-	bc->hdrv.par.bitrate = 1200;
-	if ((u = ser12_check_uart(dev->base_addr)) == c_uart_unknown)
-		return -EIO;
-	outb(0, FCR(dev->base_addr));  /* disable FIFOs */
-	outb(0x0d, MCR(dev->base_addr));
-	outb(0x0d, MCR(dev->base_addr));
-	outb(0, IER(dev->base_addr));
-	if (request_irq(dev->irq, ser12_interrupt, SA_INTERRUPT,
-			"baycom_ser12", dev))
-		return -EBUSY;
-	request_region(dev->base_addr, SER12_EXTENT, "baycom_ser12");
-	/*
-	 * enable transmitter empty interrupt
-	 */
-	outb(2, IER(dev->base_addr));
-	/*
-	 * set the SIO to 6 Bits/character and 19200 or 28800 baud, so that
-	 * we get exactly (hopefully) 2 or 3 interrupts per radio symbol,
-	 * depending on the usage of the software DCD routine
-	 */
-	ser12_set_divisor(dev, (bc->options & BAYCOM_OPTIONS_SOFTDCD) ? 4 : 6);
-	printk(KERN_INFO "%s: ser12 at iobase 0x%lx irq %u options "
-	       "0x%x uart %s\n", bc_drvname, dev->base_addr, dev->irq,
-	       bc->options, uart_str[u]);
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int ser12_close(struct device *dev)
-{
-	struct baycom_state *bc = (struct baycom_state *)dev->priv;
-
-	if (!dev || !bc)
-		return -EINVAL;
-	/*
-	 * disable interrupts
-	 */
-	outb(0, IER(dev->base_addr));
-	outb(1, MCR(dev->base_addr));
-	free_irq(dev->irq, dev);
-	release_region(dev->base_addr, SER12_EXTENT);
-	printk(KERN_INFO "%s: close ser12 at iobase 0x%lx irq %u\n",
-	       bc_drvname, dev->base_addr, dev->irq);
-	MOD_DEC_USE_COUNT;
-	return 0;
-}
-
-/* --------------------------------------------------------------------- */
-/*
- * ===================== hdlcdrv driver interface =========================
- */
-
-/* --------------------------------------------------------------------- */
-
-static int baycom_ioctl(struct device *dev, struct ifreq *ifr,
-			struct hdlcdrv_ioctl *hi, int cmd);
-
-/* --------------------------------------------------------------------- */
-
-static struct hdlcdrv_ops ser12_ops = {
-	bc_drvname,
-	bc_drvinfo,
-	ser12_open,
-	ser12_close,
-	baycom_ioctl
-};
-
-/* --------------------------------------------------------------------- */
-
-static int baycom_setmode(struct baycom_state *bc, const char *modestr)
-{
-	bc->options = !!strchr(modestr, '*');
-	return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int baycom_ioctl(struct device *dev, struct ifreq *ifr,
-			struct hdlcdrv_ioctl *hi, int cmd)
-{
-	struct baycom_state *bc;
-	struct baycom_ioctl bi;
-	int cmd2;
-
-	if (!dev || !dev->priv ||
-	    ((struct baycom_state *)dev->priv)->hdrv.magic != HDLCDRV_MAGIC) {
-		printk(KERN_ERR "bc_ioctl: invalid device struct\n");
-		return -EINVAL;
-	}
-	bc = (struct baycom_state *)dev->priv;
-
-	if (cmd != SIOCDEVPRIVATE)
-		return -ENOIOCTLCMD;
-	if (get_user(cmd2, (int *)ifr->ifr_data))
-		return -EFAULT;
-	switch (hi->cmd) {
-	default:
-		break;
-
-	case HDLCDRVCTL_GETMODE:
-		strcpy(hi->data.modename, "ser12");
-		if (bc->options & 1)
-			strcat(hi->data.modename, "*");
-		if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl)))
-			return -EFAULT;
-		return 0;
-
-	case HDLCDRVCTL_SETMODE:
-		if (!suser() || dev->start)
-			return -EACCES;
-		hi->data.modename[sizeof(hi->data.modename)-1] = '\0';
-		return baycom_setmode(bc, hi->data.modename);
-
-	case HDLCDRVCTL_MODELIST:
-		strcpy(hi->data.modename, "ser12");
-		if (copy_to_user(ifr->ifr_data, hi, sizeof(struct hdlcdrv_ioctl)))
-			return -EFAULT;
-		return 0;
-
-	case HDLCDRVCTL_MODEMPARMASK:
-		return HDLCDRV_PARMASK_IOBASE | HDLCDRV_PARMASK_IRQ;
-
-	}
-
-	if (copy_from_user(&bi, ifr->ifr_data, sizeof(bi)))
-		return -EFAULT;
-	switch (bi.cmd) {
-	default:
-		return -ENOIOCTLCMD;
-
-#ifdef BAYCOM_DEBUG
-	case BAYCOMCTL_GETDEBUG:
-		bi.data.dbg.debug1 = bc->hdrv.ptt_keyed;
-		bi.data.dbg.debug2 = bc->debug_vals.last_intcnt;
-		bi.data.dbg.debug3 = bc->debug_vals.last_pllcorr;
-		break;
-#endif /* BAYCOM_DEBUG */
-
-	}
-	if (copy_to_user(ifr->ifr_data, &bi, sizeof(bi)))
-		return -EFAULT;
-	return 0;
-
-}
-
-/* --------------------------------------------------------------------- */
-
-__initfunc(int baycom_ser_hdx_init(void))
-{
-	int i, j, found = 0;
-	char set_hw = 1;
-	struct baycom_state *bc;
-	char ifname[HDLCDRV_IFNAMELEN];
-
-
-	printk(bc_drvinfo);
-	/*
-	 * register net devices
-	 */
-	for (i = 0; i < NR_PORTS; i++) {
-		struct device *dev = baycom_device+i;
-		sprintf(ifname, "bcsh%d", i);
-
-		if (!baycom_ports[i].mode)
-			set_hw = 0;
-		if (!set_hw)
-			baycom_ports[i].iobase = baycom_ports[i].irq = 0;
-		j = hdlcdrv_register_hdlcdrv(dev, &ser12_ops,
-					     sizeof(struct baycom_state),
-					     ifname, baycom_ports[i].iobase,
-					     baycom_ports[i].irq, 0);
-		if (!j) {
-			bc = (struct baycom_state *)dev->priv;
-			if (set_hw && baycom_setmode(bc, baycom_ports[i].mode))
-				set_hw = 0;
-			found++;
-		} else {
-			printk(KERN_WARNING "%s: cannot register net device\n",
-			       bc_drvname);
-		}
-	}
-	if (!found)
-		return -ENXIO;
-	return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-#ifdef MODULE
-
-/*
- * command line settable parameters
- */
-static char *mode[NR_PORTS] = { "ser12*", };
-static int iobase[NR_PORTS] = { 0x3f8, };
-static int irq[NR_PORTS] = { 4, };
-
-#if LINUX_VERSION_CODE >= 0x20115
-
-MODULE_PARM(mode, "1-" __MODULE_STRING(NR_PORTS) "s");
-MODULE_PARM_DESC(mode, "baycom operating mode; * for software DCD");
-MODULE_PARM(iobase, "1-" __MODULE_STRING(NR_PORTS) "i");
-MODULE_PARM_DESC(iobase, "baycom io base address");
-MODULE_PARM(irq, "1-" __MODULE_STRING(NR_PORTS) "i");
-MODULE_PARM_DESC(irq, "baycom irq number");
-
-MODULE_AUTHOR("Thomas M. Sailer, sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu");
-MODULE_DESCRIPTION("Baycom ser12 half duplex amateur radio modem driver");
-
-#endif
-
-__initfunc(int init_module(void))
-{
-	int i;
-
-	for (i = 0; (i < NR_PORTS) && (mode[i]); i++) {
-		baycom_ports[i].mode = mode[i];
-		baycom_ports[i].iobase = iobase[i];
-		baycom_ports[i].irq = irq[i];
-	}
-	if (i < NR_PORTS-1)
-		baycom_ports[i+1].mode = NULL;
-	return baycom_ser_hdx_init();
-}
-
-/* --------------------------------------------------------------------- */
-
-void cleanup_module(void)
-{
-	int i;
-
-	for(i = 0; i < NR_PORTS; i++) {
-		struct device *dev = baycom_device+i;
-		struct baycom_state *bc = (struct baycom_state *)dev->priv;
-
-		if (bc) {
-			if (bc->hdrv.magic != HDLCDRV_MAGIC)
-				printk(KERN_ERR "baycom: invalid magic in "
-				       "cleanup_module\n");
-			else
-				hdlcdrv_unregister_hdlcdrv(dev);
-		}
-	}
-}
-
-#else /* MODULE */
-/* --------------------------------------------------------------------- */
-/*
- * format: baycom_ser_=io,irq,mode
- * mode: [*]
- * * indicates sofware DCD
- */
-
-__initfunc(void baycom_ser_hdx_setup(char *str, int *ints))
-{
-	int i;
-
-	for (i = 0; (i < NR_PORTS) && (baycom_ports[i].mode); i++);
-	if ((i >= NR_PORTS) || (ints[0] < 2)) {
-		printk(KERN_INFO "%s: too many or invalid interface "
-		       "specifications\n", bc_drvname);
-		return;
-	}
-	baycom_ports[i].mode = str;
-	baycom_ports[i].iobase = ints[1];
-	baycom_ports[i].irq = ints[2];
-	if (i < NR_PORTS-1)
-		baycom_ports[i+1].mode = NULL;
-}
-
-#endif /* MODULE */
-/* --------------------------------------------------------------------- */

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TCL-scripts by Sam Shen, slshen@lbl.gov