patch-2.1.27 linux/drivers/net/soundmodem/sm.h

• Lines: 361
• Date: Fri Feb 21 14:58:35 1997
• Orig file: v2.1.26/linux/drivers/net/soundmodem/sm.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.26/linux/drivers/net/soundmodem/sm.h linux/drivers/net/soundmodem/sm.h
@@ -0,0 +1,360 @@
+/*****************************************************************************/
+
+/*
+ *	sm.h  --  soundcard radio modem driver internal header.
+ *
+ *	Copyright (C) 1996  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.
+ *
+ */
+
+#ifndef _SM_H
+#define _SM_H
+
+/* ---------------------------------------------------------------------- */
+
+#include <linux/config.h>
+#include <linux/hdlcdrv.h>
+#include <linux/soundmodem.h>
+
+#define SM_DEBUG
+
+/* --------------------------------------------------------------------- */
+
+#define DMA_MODE_AUTOINIT      0x10
+
+/* ---------------------------------------------------------------------- */
+/*
+ * Information that need to be kept for each board.
+ */
+
+struct sm_state {
+	struct hdlcdrv_state hdrv;
+
+	const struct modem_tx_info *mode_tx;
+	const struct modem_rx_info *mode_rx;
+
+	const struct hardware_info *hwdrv;
+
+	/*
+	 * Hardware (soundcard) access routines state
+	 */
+	union {
+		long hw[32/sizeof(long)];
+	} hw;
+
+	/*
+	 * state of the modem code
+	 */
+	union {
+		long m[32/sizeof(long)];
+	} m;
+	union {
+		long d[256/sizeof(long)];
+	} d;
+
+#define DIAGDATALEN 64
+	struct diag_data {
+		unsigned int mode;
+		unsigned int flags;
+		volatile int ptr;
+		short data[DIAGDATALEN];
+	} diag;
+
+
+#ifdef SM_DEBUG
+	struct debug_vals {
+		unsigned long last_jiffies;
+		unsigned cur_intcnt;
+		unsigned last_intcnt;
+		unsigned mod_cyc;
+		unsigned demod_cyc;
+		unsigned dma_residue;
+	} debug_vals;
+#endif /* SM_DEBUG */
+};
+
+/* ---------------------------------------------------------------------- */
+/*
+ * Mode definition structure
+ */
+
+struct modem_tx_info {
+	const char *name;
+	unsigned int loc_storage;
+	int srate;
+	int bitrate;
+	unsigned int dmabuflenmodulo;
+	void (*modulator)(struct sm_state *, unsigned char *, int);
+	void (*init)(struct sm_state *);
+};
+
+struct modem_rx_info {
+	const char *name;
+	unsigned int loc_storage;
+	int srate;
+	int bitrate;
+	unsigned int dmabuflenmodulo;
+	unsigned int sperbit;
+	void (*demodulator)(struct sm_state *, unsigned char *, int);
+	void (*init)(struct sm_state *);
+};
+
+/* ---------------------------------------------------------------------- */
+/*
+ * Soundcard driver definition structure
+ */
+
+struct hardware_info {
+	char *hw_name; /* used for request_{region,irq,dma} */
+	unsigned int loc_storage;
+	/*
+	 * mode specific open/close
+	 */
+	int (*open)(struct device *, struct sm_state *);
+	int (*close)(struct device *, struct sm_state *);
+	int (*ioctl)(struct device *, struct sm_state *, struct ifreq *,
+		     struct hdlcdrv_ioctl *, int);
+	int (*sethw)(struct device *, struct sm_state *, char *);
+};
+
+/* --------------------------------------------------------------------- */
+
+#define min(a, b) (((a) < (b)) ? (a) : (b))
+#define max(a, b) (((a) > (b)) ? (a) : (b))
+
+/* --------------------------------------------------------------------- */
+
+extern const char sm_drvname[];
+extern const char sm_drvinfo[];
+
+/* --------------------------------------------------------------------- */
+/*
+ * ===================== diagnostics stuff ===============================
+ */
+
+extern inline void diag_trigger(struct sm_state *sm)
+{
+	if (sm->diag.ptr < 0)
+		if (!(sm->diag.flags & SM_DIAGFLAG_DCDGATE) || sm->hdrv.hdlcrx.dcd)
+			sm->diag.ptr = 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+#define SHRT_MAX ((short)(((unsigned short)(~0U))>>1))
+#define SHRT_MIN (-SHRT_MAX-1)
+
+extern inline void diag_add(struct sm_state *sm, int valinp, int valdemod)
+{
+	int val;
+
+	if ((sm->diag.mode != SM_DIAGMODE_INPUT &&
+	     sm->diag.mode != SM_DIAGMODE_DEMOD) ||
+	    sm->diag.ptr >= DIAGDATALEN || sm->diag.ptr < 0)
+		return;
+	val = (sm->diag.mode == SM_DIAGMODE_DEMOD) ? valdemod : valinp;
+	/* clip */
+	if (val > SHRT_MAX)
+		val = SHRT_MAX;
+	if (val < SHRT_MIN)
+		val = SHRT_MIN;
+	sm->diag.data[sm->diag.ptr++] = val;
+}
+
+/* --------------------------------------------------------------------- */
+
+extern inline void diag_add_one(struct sm_state *sm, int val)
+{
+	if ((sm->diag.mode != SM_DIAGMODE_INPUT &&
+	     sm->diag.mode != SM_DIAGMODE_DEMOD) ||
+	    sm->diag.ptr >= DIAGDATALEN || sm->diag.ptr < 0)
+		return;
+	/* clip */
+	if (val > SHRT_MAX)
+		val = SHRT_MAX;
+	if (val < SHRT_MIN)
+		val = SHRT_MIN;
+	sm->diag.data[sm->diag.ptr++] = val;
+}
+
+/* --------------------------------------------------------------------- */
+
+static inline void diag_add_constellation(struct sm_state *sm, int vali, int valq)
+{
+	if ((sm->diag.mode != SM_DIAGMODE_CONSTELLATION) ||
+	    sm->diag.ptr >= DIAGDATALEN-1 || sm->diag.ptr < 0)
+		return;
+	/* clip */
+	if (vali > SHRT_MAX)
+		vali = SHRT_MAX;
+	if (vali < SHRT_MIN)
+		vali = SHRT_MIN;
+	if (valq > SHRT_MAX)
+		valq = SHRT_MAX;
+	if (valq < SHRT_MIN)
+		valq = SHRT_MIN;
+	sm->diag.data[sm->diag.ptr++] = vali;
+	sm->diag.data[sm->diag.ptr++] = valq;
+}
+
+/* --------------------------------------------------------------------- */
+/*
+ * ===================== utility functions ===============================
+ */
+
+extern inline unsigned int hweight32(unsigned int w)
+	__attribute__ ((unused));
+extern inline unsigned int hweight16(unsigned short w)
+	__attribute__ ((unused));
+extern inline unsigned int hweight8(unsigned char w)
+        __attribute__ ((unused));
+
+extern inline unsigned int hweight32(unsigned int w)
+{
+        unsigned int res = (w & 0x55555555) + ((w >> 1) & 0x55555555);
+        res = (res & 0x33333333) + ((res >> 2) & 0x33333333);
+        res = (res & 0x0F0F0F0F) + ((res >> 4) & 0x0F0F0F0F);
+        res = (res & 0x00FF00FF) + ((res >> 8) & 0x00FF00FF);
+        return (res & 0x0000FFFF) + ((res >> 16) & 0x0000FFFF);
+}
+
+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);
+}
+
+extern inline unsigned int gcd(unsigned int x, unsigned int y)
+	__attribute__ ((unused));
+extern inline unsigned int lcm(unsigned int x, unsigned int y)
+	__attribute__ ((unused));
+
+extern inline unsigned int gcd(unsigned int x, unsigned int y)
+{
+	for (;;) {
+		if (!x)
+			return y;
+		if (!y)
+			return x;
+		if (x > y)
+			x %= y;
+		else
+			y %= x;
+	}
+}
+
+extern inline unsigned int lcm(unsigned int x, unsigned int y)
+{
+	return x * y / gcd(x, y);
+}
+
+/* --------------------------------------------------------------------- */
+/*
+ * ===================== profiling =======================================
+ */
+
+
+#if defined(SM_DEBUG) && (defined(CONFIG_M586) || defined(CONFIG_M686))
+
+/*
+ * only do 32bit cycle counter arithmetic; we hope we won't overflow :-)
+ * in fact, overflowing modems would require over 2THz clock speeds :-)
+ */
+
+#define time_exec(var,cmd)                                      \
+({                                                              \
+	unsigned int cnt1, cnt2, cnt3;                          \
+	__asm__(".byte 0x0f,0x31" : "=a" (cnt1), "=d" (cnt3));  \
+	cmd;                                                    \
+	__asm__(".byte 0x0f,0x31" : "=a" (cnt2), "=d" (cnt3));  \
+	var = cnt2-cnt1;                                        \
+})
+#else /* defined(SM_DEBUG) && (defined(CONFIG_M586) || defined(CONFIG_M686)) */
+
+#define time_exec(var,cmd) cmd
+
+#endif /* defined(SM_DEBUG) && (defined(CONFIG_M586) || defined(CONFIG_M686)) */
+
+/* --------------------------------------------------------------------- */
+
+extern const struct modem_tx_info sm_afsk1200_tx;
+extern const struct modem_tx_info sm_afsk2666_tx;
+extern const struct modem_tx_info sm_psk4800_tx;
+extern const struct modem_tx_info sm_hapn4800_8_tx;
+extern const struct modem_tx_info sm_hapn4800_10_tx;
+extern const struct modem_tx_info sm_hapn4800_pm8_tx;
+extern const struct modem_tx_info sm_hapn4800_pm10_tx;
+extern const struct modem_tx_info sm_fsk9600_4_tx;
+extern const struct modem_tx_info sm_fsk9600_5_tx;
+
+extern const struct modem_rx_info sm_afsk1200_rx;
+extern const struct modem_rx_info sm_afsk2666_rx;
+extern const struct modem_rx_info sm_psk4800_rx;
+extern const struct modem_rx_info sm_hapn4800_8_rx;
+extern const struct modem_rx_info sm_hapn4800_10_rx;
+extern const struct modem_rx_info sm_hapn4800_pm8_rx;
+extern const struct modem_rx_info sm_hapn4800_pm10_rx;
+extern const struct modem_rx_info sm_fsk9600_4_rx;
+extern const struct modem_rx_info sm_fsk9600_5_rx;
+
+extern const struct hardware_info sm_hw_sbc;
+extern const struct hardware_info sm_hw_wss;
+extern const struct hardware_info sm_hw_wssfdx;
+
+extern const struct modem_tx_info *sm_modem_tx_table[];
+extern const struct modem_rx_info *sm_modem_rx_table[];
+extern const struct hardware_info *sm_hardware_table[];
+
+/* --------------------------------------------------------------------- */
+
+void sm_output_status(struct sm_state *sm);
+/*void sm_output_open(struct sm_state *sm);*/
+/*void sm_output_close(struct sm_state *sm);*/
+
+/* --------------------------------------------------------------------- */
+
+extern void inline sm_int_freq(struct sm_state *sm)
+{
+#ifdef SM_DEBUG
+	unsigned long cur_jiffies = jiffies;
+	/*
+	 * measure the interrupt frequency
+	 */
+	sm->debug_vals.cur_intcnt++;
+	if ((cur_jiffies - sm->debug_vals.last_jiffies) >= HZ) {
+		sm->debug_vals.last_jiffies = cur_jiffies;
+		sm->debug_vals.last_intcnt = sm->debug_vals.cur_intcnt;
+		sm->debug_vals.cur_intcnt = 0;
+	}
+#endif /* SM_DEBUG */
+}
+
+/* --------------------------------------------------------------------- */
+#endif /* _SM_H */