patch-2.1.49 linux/drivers/char/hfmodem/main.c

• Lines: 737
• Date: Tue Aug 5 09:48:55 1997
• Orig file: v2.1.48/linux/drivers/char/hfmodem/main.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.48/linux/drivers/char/hfmodem/main.c linux/drivers/char/hfmodem/main.c
@@ -0,0 +1,736 @@
+/*****************************************************************************/
+
+/*
+ *      main.c  --  Linux soundcard HF FSK driver.
+ *
+ *      Copyright (C) 1997  Thomas Sailer (sailer@ife.ee.ethz.ch)
+ *        Swiss Federal Institute of Technology (ETH), Electronics Lab
+ *
+ *      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.
+ *
+ *  Command line options (insmod command line)
+ *
+ *  History:
+ *   0.1  15.04.97  Adapted from baycom.c and made network driver interface
+ *   0.2  05.07.97  All floating point stuff thrown out due to Linus' rantings :)
+ *
+ */
+
+/*****************************************************************************/
+      
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/malloc.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/ioport.h>
+#include <linux/hfmodem.h>
+
+#include <asm/io.h>
+#include <asm/segment.h>
+#include <asm/system.h>
+#include <asm/irq.h>
+#include <asm/dma.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
+
+/* --------------------------------------------------------------------- */
+
+/*static*/ const char hfmodem_drvname[] = "hfmodem";
+static const char hfmodem_drvinfo[] = KERN_INFO "hfmodem: (C) 1997 Thomas Sailer, HB9JNX/AE4WA\n"
+KERN_INFO "hfmodem: version 0.2 compiled " __TIME__ " " __DATE__ "\n";
+
+/* --------------------------------------------------------------------- */
+/*
+ * currently we support only one device
+ */
+
+struct hfmodem_state hfmodem_state[NR_DEVICE];
+
+/* --------------------------------------------------------------------- */
+/*
+ * ===================== port checking routines ========================
+ */
+
+
+#define UART_RBR(iobase) (iobase+0)
+#define UART_THR(iobase) (iobase+0)
+#define UART_IER(iobase) (iobase+1)
+#define UART_IIR(iobase) (iobase+2)
+#define UART_FCR(iobase) (iobase+2)
+#define UART_LCR(iobase) (iobase+3)
+#define UART_MCR(iobase) (iobase+4)
+#define UART_LSR(iobase) (iobase+5)
+#define UART_MSR(iobase) (iobase+6)
+#define UART_SCR(iobase) (iobase+7)
+#define UART_DLL(iobase) (iobase+0)
+#define UART_DLM(iobase) (iobase+1)
+
+#define SER_EXTENT 8
+
+#define LPT_DATA(iobase)    (iobase+0)
+#define LPT_STATUS(iobase)  (iobase+1)
+#define LPT_CONTROL(iobase) (iobase+2)
+#define LPT_IRQ_ENABLE      0x10
+
+#define LPT_EXTENT 3
+
+#define MIDI_DATA(iobase)     (iobase)
+#define MIDI_STATUS(iobase)   (iobase+1)
+#define MIDI_READ_FULL 0x80   /* attention: negative logic!! */
+#define MIDI_WRITE_EMPTY 0x40 /* attention: negative logic!! */
+
+#define MIDI_EXTENT 2
+
+#define SP_SER  1
+#define SP_PAR  2
+#define SP_MIDI 4
+
+/* ---------------------------------------------------------------------- */
+/*
+ * returns 0 if ok and != 0 on error;
+ * the same behaviour as par96_check_lpt in baycom.c
+ */
+
+__initfunc(static int check_lpt(unsigned int iobase))
+{
+        unsigned char b1,b2;
+        int i;
+
+        if (iobase <= 0 || iobase > 0x1000-LPT_EXTENT)
+                return 0;
+        if (check_region(iobase, LPT_EXTENT))
+                return 0;
+        b1 = inb(LPT_DATA(iobase));
+        b2 = inb(LPT_CONTROL(iobase));
+        outb(0xaa, LPT_DATA(iobase));
+        i = inb(LPT_DATA(iobase)) == 0xaa;
+        outb(0x55, LPT_DATA(iobase));
+        i &= inb(LPT_DATA(iobase)) == 0x55;
+        outb(0x0a, LPT_CONTROL(iobase));
+        i &= (inb(LPT_CONTROL(iobase)) & 0xf) == 0x0a;
+        outb(0x05, LPT_CONTROL(iobase));
+        i &= (inb(LPT_CONTROL(iobase)) & 0xf) == 0x05;
+        outb(b1, LPT_DATA(iobase));
+        outb(b2, LPT_CONTROL(iobase));
+        return !i;
+}
+
+/* --------------------------------------------------------------------- */
+
+enum uart { c_uart_unknown, c_uart_8250, c_uart_16450, c_uart_16550, c_uart_16550A };
+static const char *uart_str[] __initdata = { "unknown", "8250", "16450", "16550", "16550A" };
+
+__initfunc(static enum uart 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 };
+
+        if (iobase <= 0 || iobase > 0x1000-SER_EXTENT)
+                return c_uart_unknown;
+        if (check_region(iobase, SER_EXTENT))
+                return c_uart_unknown;
+        b1 = inb(UART_MCR(iobase));
+        outb(b1 | 0x10, UART_MCR(iobase));      /* loopback mode */
+        b2 = inb(UART_MSR(iobase));
+        outb(0x1a, UART_MCR(iobase));
+        b3 = inb(UART_MSR(iobase)) & 0xf0;
+        outb(b1, UART_MCR(iobase));        /* restore old values */
+        outb(b2, UART_MSR(iobase));
+        if (b3 != 0x90)
+                return c_uart_unknown;
+        inb(UART_RBR(iobase));
+        inb(UART_RBR(iobase));
+        outb(0x01, UART_FCR(iobase));           /* enable FIFOs */
+        u = uart_tab[(inb(UART_IIR(iobase)) >> 6) & 3];
+        if (u == c_uart_16450) {
+                outb(0x5a, UART_SCR(iobase));
+                b1 = inb(UART_SCR(iobase));
+                outb(0xa5, UART_SCR(iobase));
+                b2 = inb(UART_SCR(iobase));
+                if ((b1 != 0x5a) || (b2 != 0xa5))
+                        u = c_uart_8250;
+        }
+        return u;
+}
+
+/* --------------------------------------------------------------------- */
+
+__initfunc(static int check_midi(unsigned int iobase))
+{
+        unsigned long timeout;
+        unsigned long flags;
+        unsigned char b;
+
+        if (iobase <= 0 || iobase > 0x1000-MIDI_EXTENT)
+                return 0;
+        if (check_region(iobase, MIDI_EXTENT))
+                return 0;
+        timeout = jiffies + (HZ / 100);
+        while (inb(MIDI_STATUS(iobase)) & MIDI_WRITE_EMPTY)
+                if ((signed)(jiffies - timeout) > 0)
+                        return 0;
+        save_flags(flags);
+        cli();
+        outb(0xff, MIDI_DATA(iobase));
+        b = inb(MIDI_STATUS(iobase));
+        restore_flags(flags);
+        if (!(b & MIDI_WRITE_EMPTY))
+                return 0;
+        while (inb(MIDI_STATUS(iobase)) & MIDI_WRITE_EMPTY)
+                if ((signed)(jiffies - timeout) > 0)
+                        return 0;
+        return 1;
+}
+
+/* --------------------------------------------------------------------- */
+
+static void output_status(struct hfmodem_state *dev, int ptt)
+{
+        int dcd = 0;
+
+	ptt = !!ptt;
+        if (dev->ptt_out.flags & SP_SER) {
+                outb(dcd | (ptt << 1), UART_MCR(dev->ptt_out.seriobase));
+                outb(0x40 & (-ptt), UART_LCR(dev->ptt_out.seriobase));
+        }
+        if (dev->ptt_out.flags & SP_PAR) {
+                outb(ptt | (dcd << 1), LPT_DATA(dev->ptt_out.pariobase));
+        }
+        if (dev->ptt_out.flags & SP_MIDI && ptt) {
+                outb(0, MIDI_DATA(dev->ptt_out.midiiobase));
+        }
+}
+
+/* --------------------------------------------------------------------- */
+
+__initfunc(static void output_check(struct hfmodem_state *dev))
+{
+        enum uart u = c_uart_unknown;
+
+        if (dev->ptt_out.seriobase > 0 && dev->ptt_out.seriobase <= 0x1000-SER_EXTENT &&
+            ((u = check_uart(dev->ptt_out.seriobase))) != c_uart_unknown)
+		printk(KERN_INFO "%s: PTT output: uart found at address 0x%x type %s\n",
+		       hfmodem_drvname, dev->ptt_out.seriobase, uart_str[u]);
+	else {
+		if (dev->ptt_out.seriobase > 0)
+			printk(KERN_WARNING "%s: PTT output: no uart found at address 0x%x\n",
+			       hfmodem_drvname, dev->ptt_out.seriobase);
+		dev->ptt_out.seriobase = 0;
+	}
+        if (dev->ptt_out.pariobase > 0 && dev->ptt_out.pariobase <= 0x1000-LPT_EXTENT &&
+            !check_lpt(dev->ptt_out.pariobase)) 
+		printk(KERN_INFO "%s: PTT output: parallel port found at address 0x%x\n",
+		       hfmodem_drvname, dev->ptt_out.pariobase);
+	else {
+		if (dev->ptt_out.pariobase > 0)
+			printk(KERN_WARNING "%s: PTT output: no parallel port found at address 0x%x\n",
+			       hfmodem_drvname, dev->ptt_out.pariobase);
+		dev->ptt_out.pariobase = 0;
+	}
+	if (dev->ptt_out.midiiobase > 0 && dev->ptt_out.midiiobase <= 0x1000-MIDI_EXTENT &&
+            check_midi(dev->ptt_out.midiiobase))
+		printk(KERN_INFO "%s: PTT output: midi port found at address 0x%x\n",
+		       hfmodem_drvname, dev->ptt_out.midiiobase);
+	else {
+		if (dev->ptt_out.midiiobase > 0)
+			printk(KERN_WARNING "%s: PTT output: no midi port found at address 0x%x\n",
+			       hfmodem_drvname, dev->ptt_out.midiiobase);
+		dev->ptt_out.midiiobase = 0;
+	}
+}
+
+/* --------------------------------------------------------------------- */
+
+static void output_open(struct hfmodem_state *dev)
+{
+        dev->ptt_out.flags = 0;
+        if (dev->ptt_out.seriobase > 0) {
+		if (!check_region(dev->ptt_out.seriobase, SER_EXTENT)) {
+			request_region(dev->ptt_out.seriobase, SER_EXTENT, "hfmodem ser ptt");
+			dev->ptt_out.flags |= SP_SER;
+			outb(0, UART_IER(dev->ptt_out.seriobase));
+			/* 5 bits, 1 stop, no parity, no break, Div latch access */
+			outb(0x80, UART_LCR(dev->ptt_out.seriobase));
+			outb(0, UART_DLM(dev->ptt_out.seriobase));
+			outb(1, UART_DLL(dev->ptt_out.seriobase)); /* as fast as possible */
+			/* LCR and MCR set by output_status */
+		} else
+			printk(KERN_WARNING "%s: PTT output: serial port at 0x%x busy\n",
+			       hfmodem_drvname, dev->ptt_out.seriobase);
+	}
+        if (dev->ptt_out.pariobase > 0) {
+		if (!check_region(dev->ptt_out.pariobase, LPT_EXTENT)) {
+			request_region(dev->ptt_out.pariobase, LPT_EXTENT, "hfmodem par ptt");
+			dev->ptt_out.flags |= SP_PAR;
+		} else
+			printk(KERN_WARNING "%s: PTT output: parallel port at 0x%x busy\n",
+			       hfmodem_drvname, dev->ptt_out.pariobase);
+	}
+        if (dev->ptt_out.midiiobase > 0) {
+		if (!check_region(dev->ptt_out.midiiobase, MIDI_EXTENT)) {
+			request_region(dev->ptt_out.midiiobase, MIDI_EXTENT, "hfmodem midi ptt");
+			dev->ptt_out.flags |= SP_MIDI;
+		} else
+			printk(KERN_WARNING "%s: PTT output: midi port at 0x%x busy\n",
+			       hfmodem_drvname, dev->ptt_out.midiiobase);
+	}
+	output_status(dev, 0);
+        printk(KERN_INFO "%s: PTT output:", hfmodem_drvname);
+        if (dev->ptt_out.flags & SP_SER)
+                printk(" serial interface at 0x%x", dev->ptt_out.seriobase);
+        if (dev->ptt_out.flags & SP_PAR)
+                printk(" parallel interface at 0x%x", dev->ptt_out.pariobase);
+        if (dev->ptt_out.flags & SP_MIDI)
+                printk(" mpu401 (midi) interface at 0x%x", dev->ptt_out.midiiobase);
+        if (!dev->ptt_out.flags)
+                printk(" none");
+        printk("\n");
+}
+
+/* --------------------------------------------------------------------- */
+
+static void output_close(struct hfmodem_state *dev)
+{
+        /* release regions used for PTT output */
+        output_status(dev, 0);
+        if (dev->ptt_out.flags & SP_SER)
+                release_region(dev->ptt_out.seriobase, SER_EXTENT);
+        if (dev->ptt_out.flags & SP_PAR)
+                release_region(dev->ptt_out.pariobase, LPT_EXTENT);
+        if (dev->ptt_out.flags & SP_MIDI)
+                release_region(dev->ptt_out.midiiobase, MIDI_EXTENT);
+        dev->ptt_out.flags = 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+#define INC_SAMPLE   (1000000/HFMODEM_SRATE)
+#define INC_FRAGMENT (HFMODEM_FRAGSAMPLES*1000000/HFMODEM_SRATE)
+#define SIZE         (HFMODEM_FRAGSAMPLES*HFMODEM_NUMFRAGS)
+
+static void hfmodem_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct hfmodem_state *dev = (struct hfmodem_state *)dev_id;
+	unsigned int dmaptr;
+	__s16 *s;
+	unsigned int curfrag, nfrags;
+	int i;
+	hfmodem_time_t l1time;
+
+	dmaptr = dev->scops->intack(dev);
+	l1time = hfmodem_refclock_current(dev, ((SIZE+dmaptr-dev->dma.last_dmaptr) % SIZE) * 
+					  INC_SAMPLE, 1);
+	curfrag = (dev->dma.last_dmaptr = dmaptr) / HFMODEM_FRAGSAMPLES;
+	l1time -= INC_SAMPLE * (SIZE+dmaptr-dev->dma.fragptr*HFMODEM_FRAGSAMPLES) % SIZE;
+	sti();
+	/*
+	 * handle receiving
+	 */
+	if (dev->dma.ptt_frames <= 0) {
+		while (dev->dma.fragptr != curfrag) {
+			if (dev->dma.fragptr < HFMODEM_EXCESSFRAGS) {
+				s = dev->dma.buf + SIZE + HFMODEM_FRAGSAMPLES * dev->dma.fragptr;
+				memcpy(s, s - SIZE, HFMODEM_FRAGSIZE);
+			} else
+				s = dev->dma.buf + HFMODEM_FRAGSAMPLES * dev->dma.fragptr;
+			if (dev->sbuf.kbuf && dev->sbuf.kptr && dev->sbuf.rem > 0) {
+				i = HFMODEM_FRAGSAMPLES;
+				if (i > dev->sbuf.rem)
+					i = dev->sbuf.rem;
+				memcpy(dev->sbuf.kptr, s, i * sizeof(s[0]));
+				dev->sbuf.rem -= i;
+				dev->sbuf.kptr += i;
+			}
+			hfmodem_input_samples(dev, l1time, INC_SAMPLE, s);
+			l1time += INC_FRAGMENT;
+			dev->dma.fragptr++;
+			if (dev->dma.fragptr >= HFMODEM_NUMFRAGS)
+				dev->dma.fragptr = 0;
+		}
+		/*
+		 * check for output
+		 */
+		if (hfmodem_next_tx_event(dev, l1time) > (long)INC_FRAGMENT/2)
+			goto int_return;
+		/*
+		 * start output
+		 */
+		output_status(dev, 1);
+		dev->scops->prepare_output(dev);
+		dev->dma.last_dmaptr = 0;
+		/*
+		 * clock adjust
+		 */
+		l1time = hfmodem_refclock_current(dev, 0, 0);
+		/*
+		 * fill first two fragments
+		 */
+		dev->dma.ptt_frames = 1;
+		for (i = 0; i < 2 && i < HFMODEM_NUMFRAGS; i++)
+			if (hfmodem_output_samples(dev, l1time+i*INC_FRAGMENT, INC_SAMPLE, 
+						   dev->dma.buf+i*HFMODEM_FRAGSAMPLES))
+				dev->dma.ptt_frames = i + 1;
+		dev->dma.lastfrag = 0;
+		dev->scops->trigger_output(dev);
+		/*
+		 * finish already pending rx requests
+		 */
+		hfmodem_finish_pending_rx_requests(dev);
+		goto int_return;
+	}
+	/*
+	 * handle transmitting
+	 */
+	nfrags = HFMODEM_NUMFRAGS + curfrag - dev->dma.lastfrag;
+	dev->dma.lastfrag = curfrag;
+	if (nfrags >= HFMODEM_NUMFRAGS)
+		nfrags -= HFMODEM_NUMFRAGS;
+	dev->dma.ptt_frames -= nfrags;
+	if (dev->dma.ptt_frames < 0)
+		dev->dma.ptt_frames = 0;
+	while (dev->dma.ptt_frames < HFMODEM_NUMFRAGS && dev->dma.ptt_frames < 4 && 
+	       hfmodem_output_samples(dev, l1time+dev->dma.ptt_frames*INC_FRAGMENT, 
+				      INC_SAMPLE, dev->dma.buf + HFMODEM_FRAGSAMPLES * 
+				      ((curfrag + dev->dma.ptt_frames) % HFMODEM_NUMFRAGS)))
+		dev->dma.ptt_frames++;
+	if (dev->dma.ptt_frames > 0)
+		goto int_return;
+	/* 
+	 * start receiving
+	 */
+	output_status(dev, 0);
+	dev->dma.last_dmaptr = 0;
+	dev->dma.lastfrag = 0;
+	dev->dma.fragptr = 0;
+	dev->dma.ptt_frames = 0;
+	dev->scops->prepare_input(dev);
+	dev->scops->trigger_input(dev);
+	hfmodem_refclock_current(dev, 0, 0);  /* needed to reset the time difference */
+int_return:
+	hfmodem_wakeup(dev);
+}
+
+/* --------------------------------------------------------------------- */
+
+static int hfmodem_close(struct inode *inode, struct file *file)
+{
+	struct hfmodem_state *dev = &hfmodem_state[0];
+
+	if (!dev->active)
+		return -EPERM;
+	dev->active = 0;
+	dev->scops->stop(dev);
+        free_irq(dev->io.irq, dev);        
+	disable_dma(dev->io.dma);
+	free_dma(dev->io.dma);
+        release_region(dev->io.base_addr, dev->scops->extent);
+	kfree_s(dev->dma.buf, HFMODEM_FRAGSIZE * (HFMODEM_NUMFRAGS+HFMODEM_EXCESSFRAGS));
+	hfmodem_clear_rq(dev);
+	if (dev->sbuf.kbuf) {
+		kfree_s(dev->sbuf.kbuf, dev->sbuf.size);
+		dev->sbuf.kbuf = dev->sbuf.kptr = NULL;
+		dev->sbuf.size = dev->sbuf.rem = 0;
+	}
+	output_close(dev);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+static int hfmodem_open(struct inode *inode, struct file *file)
+{
+	struct hfmodem_state *dev = &hfmodem_state[0];
+
+	if (dev->active)
+		return -EBUSY;
+	if (!dev->scops)
+		return -EPERM;
+	/*
+	 * clear vars
+	 */
+	memset(&dev->l1, 0, sizeof(dev->l1));
+	dev->dma.last_dmaptr = 0;
+	dev->dma.lastfrag = 0;
+	dev->dma.fragptr = 0;
+	dev->dma.ptt_frames = 0;
+	/*
+	 * allocate memory
+	 */
+	if (!(dev->dma.buf = kmalloc(HFMODEM_FRAGSIZE * (HFMODEM_NUMFRAGS+HFMODEM_EXCESSFRAGS), GFP_KERNEL | GFP_DMA)))
+		return -ENOMEM;
+	/*
+	 * allocate resources
+	 */
+        if (request_dma(dev->io.dma, hfmodem_drvname)) {
+                kfree_s(dev->dma.buf, HFMODEM_FRAGSIZE * (HFMODEM_NUMFRAGS+HFMODEM_EXCESSFRAGS));
+                return -EBUSY;
+        }
+        if (request_irq(dev->io.irq, hfmodem_interrupt, SA_INTERRUPT, hfmodem_drvname, dev)) {
+                free_dma(dev->io.dma);
+                kfree_s(dev->dma.buf, HFMODEM_FRAGSIZE * (HFMODEM_NUMFRAGS+HFMODEM_EXCESSFRAGS));
+                return -EBUSY;
+        }
+        request_region(dev->io.base_addr, dev->scops->extent, hfmodem_drvname);
+	
+	/* clear requests */
+      	dev->active++;
+	MOD_INC_USE_COUNT;
+	hfmodem_refclock_init(dev);
+	output_open(dev);
+	dev->scops->init(dev);
+	dev->scops->prepare_input(dev);
+	dev->scops->trigger_input(dev);
+	return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+static struct file_operations hfmodem_fops = {
+	NULL,		    /* hfmodem_seek */
+	NULL,               /* hfmodem_read */
+	NULL,               /* hfmodem_write */
+	NULL, 		    /* hfmodem_readdir */
+#if LINUX_VERSION_CODE >= 0x20100
+	hfmodem_poll,       /* hfmodem_poll */
+#else 
+	hfmodem_select,     /* hfmodem_select */
+#endif
+	hfmodem_ioctl,      /* hfmodem_ioctl */
+	NULL,		    /* hfmodem_mmap */
+	hfmodem_open,       /* hfmodem_open */
+	hfmodem_close,      /* hfmodem_close */
+	NULL,               /* hfmodem_fsync */
+	NULL,               /* hfmodem_fasync */
+	NULL,               /* hfmodem_check_media_change */
+	NULL                /* hfmodem_revalidate */
+};
+
+/* --------------------------------------------------------------------- */
+
+static struct miscdevice hfmodem_device = {
+	HFMODEM_MINOR, hfmodem_drvname, &hfmodem_fops
+};
+
+/* --------------------------------------------------------------------- */
+
+#ifdef MODULE
+
+/*
+ * Command line parameters
+ */
+
+static int hw = 0;
+static unsigned int iobase = 0x220;
+static unsigned int irq = 7;
+static unsigned int dma = 1;
+
+static unsigned int serio = 0;
+static unsigned int pario = 0;
+static unsigned int midiio = 0;
+
+#if LINUX_VERSION_CODE >= 0x20115
+
+MODULE_PARM(hw, "i");
+MODULE_PARM_DESC(hw, "hardware type: 0=SBC, 1=WSS");
+MODULE_PARM(iobase, "i");
+MODULE_PARM_DESC(iobase, "io base address");
+MODULE_PARM(irq, "i");
+MODULE_PARM_DESC(irq, "interrupt number");
+MODULE_PARM(dma, "i");
+MODULE_PARM_DESC(dma, "dma number (>=4 for SB16/32/64/etc, <=3 for the rest)");
+MODULE_PARM(serio, "i");
+MODULE_PARM_DESC(serio, "address of serial port to output PTT");
+MODULE_PARM(pario, "i");
+MODULE_PARM_DESC(pario, "address of parial port to output PTT");
+MODULE_PARM(midiio, "i");
+MODULE_PARM_DESC(midiio, "address of midi (MPU401) port to output PTT");
+
+MODULE_AUTHOR("Thomas M. Sailer, sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu");
+MODULE_DESCRIPTION("HF FSK modem code");
+
+/* these are the module parameters from refclock.c */
+
+MODULE_PARM(scale_tvusec, "i");
+MODULE_PARM_DESC(scale_tvusec, "Scaling value for the tv_usec field (can be obta
+ined by refclock)");
+
+#ifdef __i386__
+MODULE_PARM(scale_rdtsc, "i");
+MODULE_PARM_DESC(scale_rdtsc, "Scaling value for the rdtsc counter (can be obtai
+ned by refclock)");
+MODULE_PARM(rdtsc_ok, "i");
+MODULE_PARM_DESC(rdtsc_ok, "Set to 0 to disable the use of the rdtsc instruction
+");
+#endif /* __i386__ */
+
+#endif
+
+__initfunc(int init_module(void))
+{
+	int i;
+
+	printk(hfmodem_drvinfo);
+	memset(hfmodem_state, 0, sizeof(hfmodem_state));
+        memset(hfmodem_correlator_cache, 0, sizeof(hfmodem_correlator_cache));
+	hfmodem_state[0].io.base_addr = iobase;
+	hfmodem_state[0].io.irq = irq;
+	hfmodem_state[0].io.dma = dma;
+	hfmodem_state[0].ptt_out.seriobase = serio;
+	hfmodem_state[0].ptt_out.pariobase = pario;
+	hfmodem_state[0].ptt_out.midiiobase = midiio;
+	hfmodem_refclock_probe();
+	output_check(&hfmodem_state[0]);
+#if defined(CONFIG_HFMODEM_WSS) && defined(CONFIG_HFMODEM_SBC)
+        if (hw) 
+                i = hfmodem_wssprobe(&hfmodem_state[0]);
+        else
+                i = hfmodem_sbcprobe(&hfmodem_state[0]);
+#else
+        i = -EINVAL;
+#ifdef CONFIG_HFMODEM_WSS
+        i = hfmodem_wssprobe(&hfmodem_state[0]);
+#endif
+#ifdef CONFIG_HFMODEM_SBC
+        i = hfmodem_sbcprobe(&hfmodem_state[0]);
+#endif
+#endif
+	if (i)
+		return i;
+	if ((i =  misc_register(&hfmodem_device))) {
+		printk(KERN_ERR "%s: cannot register misc device\n", hfmodem_drvname);
+		return i;
+	}
+	return 0;
+}
+
+void cleanup_module(void)
+{
+	misc_deregister(&hfmodem_device);
+}
+
+#else /* MODULE */
+/* --------------------------------------------------------------------- */
+
+static int hw = 0;
+
+__initfunc(void hfmodem_setup(char *str, int *ints))
+{
+        if (ints[0] < 7) {
+                printk(KERN_WARNING "%s: setup: too few parameters\n", hfmodem_drvname);
+                return;
+        }       
+        memset(hfmodem_state, 0, sizeof(hfmodem_state));
+        memset(hfmodem_correlator_cache, 0, sizeof(hfmodem_correlator_cache));
+        hw = ints[1];
+        hfmodem_state[0].io.base_addr = ints[2];
+        hfmodem_state[0].io.irq = ints[3];
+        hfmodem_state[0].io.dma = ints[4];
+        if (ints[0] >= 8)
+                hfmodem_state[0].ptt_out.seriobase = ints[5];
+        if (ints[0] >= 9)
+                hfmodem_state[0].ptt_out.pariobase = ints[6];
+        if (ints[0] >= 10)
+                hfmodem_state[0].ptt_out.midiiobase = ints[7];
+        hfmodem_refclock_setscale(ints[ints[0]-2], ints[ints[0]-1], ints[ints[0]]);
+}
+
+__initfunc(void hfmodem_init(void))
+{
+        int i;
+
+	printk(hfmodem_drvinfo);
+        hfmodem_refclock_probe();
+        output_check(&hfmodem_state[0]);
+#if defined(CONFIG_HFMODEM_WSS) && defined(CONFIG_HFMODEM_SBC)
+        if (hw) 
+                i = hfmodem_wssprobe(&hfmodem_state[0]);
+        else
+                i = hfmodem_sbcprobe(&hfmodem_state[0]);
+#else
+        i = -EINVAL;
+#ifdef CONFIG_HFMODEM_WSS
+        i = hfmodem_wssprobe(&hfmodem_state[0]);
+#endif
+#ifdef CONFIG_HFMODEM_SBC
+        i = hfmodem_sbcprobe(&hfmodem_state[0]);
+#endif
+#endif
+        if (i) {
+                printk(KERN_ERR "%s: soundcard probe failed\n", hfmodem_drvname);
+                return;
+        }
+        if ((i =  misc_register(&hfmodem_device))) {
+                printk(KERN_ERR "%s: cannot register misc device\n", hfmodem_drvname);
+                return;
+        }
+}
+
+/* --------------------------------------------------------------------- */
+#endif /* MODULE */
+