patch-2.1.71 linux/drivers/net/baycom_ser_fdx.c
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- Lines: 763
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.1.70/linux/drivers/net/baycom_ser_fdx.c
- Orig date:
Mon Dec 1 12:04:12 1997
diff -u --recursive --new-file v2.1.70/linux/drivers/net/baycom_ser_fdx.c linux/drivers/net/baycom_ser_fdx.c
@@ -1,762 +0,0 @@
-/*****************************************************************************/
-
-/*
- * baycom_ser_fdx.c -- baycom ser12 fullduplex 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
- * baud baud rate (between 300 and 4800)
- * 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_fdx";
-static const char bc_drvinfo[] = KERN_INFO "baycom_ser_fdx: (C) 1997 Thomas Sailer, HB9JNX/AE4WA\n"
-KERN_INFO "baycom_ser_fdx: 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, baud;
-} 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 baud, baud_us8, baud_arbdiv;
- 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 long last_jiffies;
- unsigned int pll_time;
- unsigned int txshreg;
- } 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 =========================
- */
-
-/* --------------------------------------------------------------------- */
-
-extern inline unsigned int hweight16(unsigned short w)
- __attribute__ ((unused));
-extern inline unsigned int hweight8(unsigned char w)
- __attribute__ ((unused));
-
-extern inline unsigned int hweight16(unsigned short w)
-{
- unsigned short res = (w & 0x5555) + ((w >> 1) & 0x5555);
- res = (res & 0x3333) + ((res >> 2) & 0x3333);
- res = (res & 0x0F0F) + ((res >> 4) & 0x0F0F);
- return (res & 0x00FF) + ((res >> 8) & 0x00FF);
-}
-
-extern inline unsigned int hweight8(unsigned char w)
-{
- unsigned short res = (w & 0x55) + ((w >> 1) & 0x55);
- res = (res & 0x33) + ((res >> 2) & 0x33);
- return (res & 0x0F) + ((res >> 4) & 0x0F);
-}
-
-/* --------------------------------------------------------------------- */
-
-static __inline__ void ser12_rxsample(struct device *dev, struct baycom_state *bc, unsigned char news)
-{
- bc->modem.ser12.dcd_shreg <<= 1;
- bc->modem.ser12.bit_pll += 0x2000;
- if (bc->modem.ser12.last_sample != news) {
- bc->modem.ser12.last_sample = news;
- bc->modem.ser12.dcd_shreg |= 1;
- if (bc->modem.ser12.bit_pll < 0x9000)
- bc->modem.ser12.bit_pll += 0x1000;
- else
- bc->modem.ser12.bit_pll -= 0x1000;
- bc->modem.ser12.dcd_sum0 += 4 * hweight8(bc->modem.ser12.dcd_shreg & 0x38)
- - hweight16(bc->modem.ser12.dcd_shreg & 0x7c0);
- }
- hdlcdrv_channelbit(&bc->hdrv, !!bc->modem.ser12.last_sample);
- if ((--bc->modem.ser12.dcd_time) <= 0) {
- 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;
- bc->modem.ser12.dcd_sum0 = 2; /* slight bias */
- bc->modem.ser12.dcd_time = 120;
- }
- if (bc->modem.ser12.bit_pll >= 0x10000) {
- bc->modem.ser12.bit_pll &= 0xffff;
- bc->modem.shreg >>= 1;
- if (bc->modem.ser12.last_rxbit == bc->modem.ser12.last_sample)
- bc->modem.shreg |= 0x10000;
- bc->modem.ser12.last_rxbit = bc->modem.ser12.last_sample;
- if (bc->modem.shreg & 1) {
- hdlcdrv_putbits(&bc->hdrv, bc->modem.shreg >> 1);
- bc->modem.shreg = 0x10000;
- }
- }
-}
-
-/* --------------------------------------------------------------------- */
-
-static __inline__ void ser12_rx(struct device *dev, struct baycom_state *bc, unsigned char curs)
-{
- unsigned long curjiff;
- struct timeval tv;
- unsigned int timediff;
-
- /*
- * get current time
- */
- curjiff = jiffies;
- do_gettimeofday(&tv);
- if ((signed)(curjiff - bc->modem.ser12.last_jiffies) >= HZ/4) {
- /* long inactivity; clear HDLC and DCD */
- bc->modem.ser12.dcd_sum1 = 0;
- bc->modem.ser12.dcd_sum2 = 0;
- bc->modem.ser12.dcd_sum0 = 2;
- bc->modem.ser12.dcd_time = 120;
- hdlcdrv_setdcd(&bc->hdrv, 0);
- hdlcdrv_putbits(&bc->hdrv, 0xffff);
- bc->modem.ser12.last_jiffies = curjiff;
- bc->modem.ser12.pll_time = tv.tv_usec;
- }
- bc->modem.ser12.last_jiffies = curjiff;
- timediff = tv.tv_usec + 1000000 - bc->modem.ser12.pll_time;
- timediff %= 1000000;
- timediff /= bc->baud_us8;
- bc->modem.ser12.pll_time = (bc->modem.ser12.pll_time + timediff * (bc->baud_us8)) % 1000000;
- for (; timediff > 1; timediff--)
- ser12_rxsample(dev, bc, bc->modem.ser12.last_sample);
- if (timediff >= 1)
- ser12_rxsample(dev, bc, curs);
-}
-
-/* --------------------------------------------------------------------- */
-
-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;
- unsigned char iir, msr = 0;
- unsigned int txcount = 0;
- unsigned int rxcount = 0;
-
- if (!dev || !bc || bc->hdrv.magic != HDLCDRV_MAGIC)
- return;
-
- for (;;) {
- iir = inb(IIR(dev->base_addr));
- if (iir & 1)
- break;
- switch (iir & 6) {
- case 6:
- inb(LSR(dev->base_addr));
- continue;
-
- case 4:
- inb(RBR(dev->base_addr));
- continue;
-
- case 2:
- /*
- * 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));
- bc->modem.arb_divider--;
- baycom_int_freq(bc);
- if (hdlcdrv_ptt(&bc->hdrv)) {
- /*
- * 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));
- txcount++;
- } else
- outb(0x0d, MCR(dev->base_addr)); /* transmitter off */
- continue;
-
- default:
- msr = inb(MSR(dev->base_addr));
- if (msr & 1) /* delta CTS interrupt */
- rxcount++;
- continue;
- }
- }
- if (rxcount)
- ser12_rx(dev, bc, msr & 0x10);
- if (txcount) {
-#ifdef BAYCOM_DEBUG
- if (bc->debug_vals.cur_pllcorr < txcount)
- bc->debug_vals.cur_pllcorr = txcount;
-#endif /* BAYCOM_DEBUG */
- if (bc->modem.ser12.txshreg <= 1)
- bc->modem.ser12.txshreg = 0x10000 | hdlcdrv_getbits(&bc->hdrv);
- bc->modem.ser12.tx_bit = !(bc->modem.ser12.tx_bit ^ (bc->modem.ser12.txshreg & 1));
- bc->modem.ser12.txshreg >>= 1;
- }
- sti();
- if (bc->modem.arb_divider <= 0) {
- bc->modem.arb_divider = bc->baud_arbdiv;
- hdlcdrv_arbitrate(dev, &bc->hdrv);
- }
- 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 (bc->baud < 300 || bc->baud > 4800)
- return -EINVAL;
- if (check_region(dev->base_addr, SER12_EXTENT))
- return -EACCES;
- memset(&bc->modem, 0, sizeof(bc->modem));
- bc->hdrv.par.bitrate = bc->baud;
- bc->baud_us8 = 125000/bc->baud;
- bc->baud_arbdiv = bc->baud/100;
- 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_ser_fdx", dev))
- return -EBUSY;
- request_region(dev->base_addr, SER12_EXTENT, "baycom_ser_fdx");
- /*
- * set the SIO to 6 Bits/character and 19600 baud, so that
- * we get exactly (hopefully) one interrupt per radio symbol
- */
- outb(0x81, LCR(dev->base_addr)); /* DLAB = 1 */
- outb(115200/8/bc->baud, DLL(dev->base_addr));
- outb(0, DLM(dev->base_addr));
- outb(0x01, LCR(dev->base_addr)); /* word length = 6 */
- /*
- * enable transmitter empty interrupt and modem status interrupt
- */
- outb(0x0a, IER(dev->base_addr));
- /*
- * 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));
- printk(KERN_INFO "%s: ser_fdx at iobase 0x%lx irq %u options "
- "0x%x baud %u uart %s\n", bc_drvname, dev->base_addr, dev->irq,
- bc->options, bc->baud, 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 ser_fdx 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)
-{
- unsigned int baud;
-
- if (!strncmp(modestr, "ser", 3)) {
- baud = simple_strtoul(modestr+3, NULL, 10);
- if (baud >= 3 && baud <= 48)
- bc->baud = baud*100;
- }
- 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:
- sprintf(hi->data.modename, "ser%u", bc->baud / 100);
- 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,ser3,ser24");
- 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_fdx_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, "bcsf%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;
- bc->baud = baycom_ports[i].baud;
- 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, };
-static int baud[NR_PORTS] = { [0 ... NR_PORTS-1] = 1200 };
-
-#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_PARM(baud, "1-" __MODULE_STRING(NR_PORTS) "i");
-MODULE_PARM_DESC(baud, "baycom baud rate (300 to 4800)");
-
-MODULE_AUTHOR("Thomas M. Sailer, sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu");
-MODULE_DESCRIPTION("Baycom ser12 full 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];
- baycom_ports[i].baud = baud[i];
- }
- if (i < NR_PORTS-1)
- baycom_ports[i+1].mode = NULL;
- return baycom_ser_fdx_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_fdx_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 (ints[0] >= 3)
- baycom_ports[i].baud = ints[3];
- else
- baycom_ports[i].baud = 1200;
- if (i < NR_PORTS-1)
- baycom_ports[i+1].mode = NULL;
-}
-
-#endif /* MODULE */
-/* --------------------------------------------------------------------- */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov