patch-2.1.71 linux/drivers/net/baycom_ser_hdx.c
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- Lines: 793
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.1.70/linux/drivers/net/baycom_ser_hdx.c
- Orig date:
Mon Dec 1 12:04:12 1997
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 */
-/* --------------------------------------------------------------------- */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov