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/*****************************************************************************/
/*
* 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/hdlcdrv.h>
#include <linux/soundmodem.h>
#define SM_DEBUG
/* ---------------------------------------------------------------------- */
/*
* 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
*/
struct {
void *ibuf;
unsigned int ifragsz;
unsigned int ifragptr;
unsigned int i16bit;
void *obuf;
unsigned int ofragsz;
unsigned int ofragptr;
unsigned int o16bit;
int ptt_cnt;
} dma;
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;
void (*modulator_u8)(struct sm_state *, unsigned char *, unsigned int);
void (*modulator_s16)(struct sm_state *, short *, unsigned int);
void (*init)(struct sm_state *);
};
struct modem_rx_info {
const char *name;
unsigned int loc_storage;
int srate;
int bitrate;
unsigned int overlap;
unsigned int sperbit;
void (*demodulator_u8)(struct sm_state *, const unsigned char *, unsigned int);
void (*demodulator_s16)(struct sm_state *, const short *, unsigned 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 =======================================
*/
#ifdef __i386__
extern int sm_x86_capability;
#define HAS_RDTSC (sm_x86_capability & 0x10)
/*
* 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) \
({ \
if (HAS_RDTSC) { \
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 { \
cmd; \
} \
})
#else /* __i386__ */
#define time_exec(var,cmd) cmd
#endif /* __i386__ */
/* --------------------------------------------------------------------- */
extern const struct modem_tx_info sm_afsk1200_tx;
extern const struct modem_tx_info sm_afsk2400_7_tx;
extern const struct modem_tx_info sm_afsk2400_8_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_afsk2400_7_rx;
extern const struct modem_rx_info sm_afsk2400_8_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_sbcfdx;
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 */
|
