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-rw-r--r--drivers/net/hamradio/soundmodem/smdma.h217
1 files changed, 0 insertions, 217 deletions
diff --git a/drivers/net/hamradio/soundmodem/smdma.h b/drivers/net/hamradio/soundmodem/smdma.h
deleted file mode 100644
index 44e457a7a..000000000
--- a/drivers/net/hamradio/soundmodem/smdma.h
+++ /dev/null
@@ -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 */
-
-
-
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