patch-2.1.71 linux/drivers/net/soundmodem/smdma.h

• Lines: 218
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.70/linux/drivers/net/soundmodem/smdma.h
• Orig date: Mon Aug 11 14:47:04 1997

diff -u --recursive --new-file v2.1.70/linux/drivers/net/soundmodem/smdma.h linux/drivers/net/soundmodem/smdma.h
@@ -1,217 +0,0 @@
-/*****************************************************************************/
-
-/*
- *	smdma.h  --  soundcard radio modem driver dma buffer routines.
- *
- *	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 _SMDMA_H
-#define _SMDMA_H
-
-/* ---------------------------------------------------------------------- */
-
-#include "sm.h"
-
-/* ---------------------------------------------------------------------- */
-
-#define DMA_MODE_AUTOINIT      0x10
-#define NUM_FRAGMENTS          4
-
-/*
- * NOTE: make sure that hdlcdrv_hdlcbuffer contains enough space
- * for the modulator to fill the whole DMA buffer without underrun
- * at the highest possible baud rate, otherwise the TX state machine will
- * not work correctly. That is (9k6 FSK): HDLCDRV_HDLCBUFFER > 6*NUM_FRAGMENTS
- */ 
-
-/* --------------------------------------------------------------------- */
-/*
- * ===================== DMA buffer management ===========================
- */
-
-/*
- * returns the number of samples per fragment
- */
-extern __inline__ unsigned int dma_setup(struct sm_state *sm, int send, unsigned int dmanr)
-{
-	if (send) {
-		disable_dma(dmanr);
-		clear_dma_ff(dmanr);
-		set_dma_mode(dmanr, DMA_MODE_WRITE | DMA_MODE_AUTOINIT);
-		set_dma_addr(dmanr, virt_to_bus(sm->dma.obuf));
-		set_dma_count(dmanr, sm->dma.ofragsz * NUM_FRAGMENTS);
-		enable_dma(dmanr);
-		if (sm->dma.o16bit)
-			return sm->dma.ofragsz/2;
-		return sm->dma.ofragsz;
-	} else {
-		disable_dma(dmanr);
-		clear_dma_ff(dmanr);
-		set_dma_mode(dmanr, DMA_MODE_READ | DMA_MODE_AUTOINIT);
-		set_dma_addr(dmanr, virt_to_bus(sm->dma.ibuf));
-		set_dma_count(dmanr, sm->dma.ifragsz * NUM_FRAGMENTS);
-		enable_dma(dmanr);
-		if (sm->dma.i16bit)
-			return sm->dma.ifragsz/2;
-		return sm->dma.ifragsz;
-	}
-}
-
-/* --------------------------------------------------------------------- */
-
-extern __inline__ unsigned int dma_ptr(struct sm_state *sm, int send, unsigned int dmanr,
-				       unsigned int *curfrag)
-{
-	unsigned int dmaptr, sz, frg, offs;
-	
-	dmaptr = get_dma_residue(dmanr);
-	if (send) {
-		sz = sm->dma.ofragsz * NUM_FRAGMENTS;
-		if (dmaptr == 0 || dmaptr > sz)
-			dmaptr = sz;
-		dmaptr--;
-		frg = dmaptr / sm->dma.ofragsz;
-		offs = (dmaptr % sm->dma.ofragsz) + 1;
-		*curfrag = NUM_FRAGMENTS - 1 - frg;
-#ifdef SM_DEBUG
-		if (!sm->debug_vals.dma_residue || offs < sm->debug_vals.dma_residue)
-			sm->debug_vals.dma_residue = offs;
-#endif /* SM_DEBUG */
-		if (sm->dma.o16bit)
-			return offs/2;
-		return offs;
-	} else {
-		sz = sm->dma.ifragsz * NUM_FRAGMENTS;
-		if (dmaptr == 0 || dmaptr > sz)
-			dmaptr = sz;
-		dmaptr--;
-		frg = dmaptr / sm->dma.ifragsz;
-		offs = (dmaptr % sm->dma.ifragsz) + 1;
-		*curfrag = NUM_FRAGMENTS - 1 - frg;
-#ifdef SM_DEBUG
-		if (!sm->debug_vals.dma_residue || offs < sm->debug_vals.dma_residue)
-			sm->debug_vals.dma_residue = offs;
-#endif /* SM_DEBUG */
-		if (sm->dma.i16bit)
-			return offs/2;
-		return offs;
-	}
-}
-
-/* --------------------------------------------------------------------- */
-
-extern __inline__ int dma_end_transmit(struct sm_state *sm, unsigned int curfrag)
-{
-	unsigned int diff = (NUM_FRAGMENTS + curfrag - sm->dma.ofragptr) % NUM_FRAGMENTS;
-
-	sm->dma.ofragptr = curfrag;
-	if (sm->dma.ptt_cnt <= 0) {
-		sm->dma.ptt_cnt = 0;
-		return 0;
-	}
-	sm->dma.ptt_cnt -= diff;
-	if (sm->dma.ptt_cnt <= 0) {
-		sm->dma.ptt_cnt = 0;
-		return -1;
-	}
-	return 0;
-}
-
-extern __inline__ void dma_transmit(struct sm_state *sm)
-{
-	void *p;
-
-	while (sm->dma.ptt_cnt < NUM_FRAGMENTS && hdlcdrv_ptt(&sm->hdrv)) {
-		p = (unsigned char *)sm->dma.obuf + sm->dma.ofragsz *
-			((sm->dma.ofragptr + sm->dma.ptt_cnt) % NUM_FRAGMENTS);
-		if (sm->dma.o16bit) {
-			time_exec(sm->debug_vals.mod_cyc, 
-				  sm->mode_tx->modulator_s16(sm, p, sm->dma.ofragsz/2));
-		} else {
-			time_exec(sm->debug_vals.mod_cyc, 
-				  sm->mode_tx->modulator_u8(sm, p, sm->dma.ofragsz));
-		}
-		sm->dma.ptt_cnt++;
-	}
-}
-
-extern __inline__ void dma_init_transmit(struct sm_state *sm)
-{
-	sm->dma.ofragptr = 0;
-	sm->dma.ptt_cnt = 0;
-}
-
-extern __inline__ void dma_start_transmit(struct sm_state *sm)
-{
-	sm->dma.ofragptr = 0;
-	if (sm->dma.o16bit) {
-		time_exec(sm->debug_vals.mod_cyc, 
-			  sm->mode_tx->modulator_s16(sm, sm->dma.obuf, sm->dma.ofragsz/2));
-	} else {
-		time_exec(sm->debug_vals.mod_cyc, 
-			  sm->mode_tx->modulator_u8(sm, sm->dma.obuf, sm->dma.ofragsz));
-	}
-	sm->dma.ptt_cnt = 1;
-}
-
-extern __inline__ void dma_clear_transmit(struct sm_state *sm)
-{
-	sm->dma.ptt_cnt = 0;
-	memset(sm->dma.obuf, (sm->dma.o16bit) ? 0 : 0x80, sm->dma.ofragsz * NUM_FRAGMENTS);
-}
-
-/* --------------------------------------------------------------------- */
-
-extern __inline__ void dma_receive(struct sm_state *sm, unsigned int curfrag)
-{
-	void *p;
-
-	while (sm->dma.ifragptr != curfrag) {
-		if (sm->dma.ifragptr)
-			p = (unsigned char *)sm->dma.ibuf + 
-				sm->dma.ifragsz * sm->dma.ifragptr;
-		else {
-			p = (unsigned char *)sm->dma.ibuf + NUM_FRAGMENTS * sm->dma.ifragsz;
-			memcpy(p, sm->dma.ibuf, sm->dma.ifragsz);
-		}
-		if (sm->dma.o16bit) {
-			time_exec(sm->debug_vals.demod_cyc, 
-				  sm->mode_rx->demodulator_s16(sm, p, sm->dma.ifragsz/2));
-		} else {
-			time_exec(sm->debug_vals.demod_cyc, 
-				  sm->mode_rx->demodulator_u8(sm, p, sm->dma.ifragsz));
-		}
-		sm->dma.ifragptr = (sm->dma.ifragptr + 1) % NUM_FRAGMENTS;
-	}
-}
-
-extern __inline__ void dma_init_receive(struct sm_state *sm)
-{
-	sm->dma.ifragptr = 0;
-}
-
-/* --------------------------------------------------------------------- */
-#endif /* _SMDMA_H */
-
-
-