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scd.c (8876) scd.c (10624)
1/*-
2 * Copyright (c) 1995 Mikael Hybsch
3 * All rights reserved.
4 *
5 * Portions of this file are copied from mcd.c
6 * which has the following copyrights:
7 *
8 * Copyright 1993 by Holger Veit (data part)

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36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
39 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 */
42
43
1/*-
2 * Copyright (c) 1995 Mikael Hybsch
3 * All rights reserved.
4 *
5 * Portions of this file are copied from mcd.c
6 * which has the following copyrights:
7 *
8 * Copyright 1993 by Holger Veit (data part)

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36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
39 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 */
42
43
44/* $Id: scd.c,v 1.4 1995/05/09 12:25:58 rgrimes Exp $ */
44/* $Id: scd.c,v 1.5 1995/05/30 08:03:02 rgrimes Exp $ */
45
46/* Please send any comments to micke@dynas.se */
47
48#define SCD_DEBUG 0
49
50#include "scd.h"
51#if NSCD > 0
52#include <sys/types.h>

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137 struct ioc_play_msf last_play;
138
139 short audio_status;
140 struct buf head; /* head of buf queue */
141 struct scd_mbx mbx;
142} scd_data[NSCD];
143
144/* prototypes */
45
46/* Please send any comments to micke@dynas.se */
47
48#define SCD_DEBUG 0
49
50#include "scd.h"
51#if NSCD > 0
52#include <sys/types.h>

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137 struct ioc_play_msf last_play;
138
139 short audio_status;
140 struct buf head; /* head of buf queue */
141 struct scd_mbx mbx;
142} scd_data[NSCD];
143
144/* prototypes */
145int scdopen(dev_t dev);
146int scdclose(dev_t dev);
145int scdopen(dev_t dev, int flags, int fmt, struct proc *p);
146int scdclose(dev_t dev, int flags, int fmt, struct proc *p);
147void scdstrategy(struct buf *bp);
147void scdstrategy(struct buf *bp);
148int scdioctl(dev_t dev, int cmd, caddr_t addr, int flags);
148int scdioctl(dev_t dev, int cmd, caddr_t addr, int flags, struct proc *p);
149int scdsize(dev_t dev);
150
151static int bcd2bin(bcd_t b);
152static bcd_t bin2bcd(int b);
153static void hsg2msf(int hsg, bcd_t *msf);
154static int msf2hsg(bcd_t *msf);
155
156static void process_attention(unsigned unit);

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225
226 cd->flags = SCDINIT;
227 cd->audio_status = CD_AS_AUDIO_INVALID;
228
229 return 1;
230}
231
232int
149int scdsize(dev_t dev);
150
151static int bcd2bin(bcd_t b);
152static bcd_t bin2bcd(int b);
153static void hsg2msf(int hsg, bcd_t *msf);
154static int msf2hsg(bcd_t *msf);
155
156static void process_attention(unsigned unit);

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225
226 cd->flags = SCDINIT;
227 cd->audio_status = CD_AS_AUDIO_INVALID;
228
229 return 1;
230}
231
232int
233scdopen(dev_t dev)
233scdopen(dev_t dev, int flags, int fmt, struct proc *p)
234{
235 int unit,part,phys;
236 int rc;
237 struct scd_data *cd;
238
239 unit = scd_unit(dev);
240 if (unit >= NSCD)
241 return ENXIO;

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278 cd->openflag = 1;
279 cd->flags |= SCDVALID;
280 kdc_scd[unit].kdc_state = DC_BUSY;
281
282 return 0;
283}
284
285int
234{
235 int unit,part,phys;
236 int rc;
237 struct scd_data *cd;
238
239 unit = scd_unit(dev);
240 if (unit >= NSCD)
241 return ENXIO;

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278 cd->openflag = 1;
279 cd->flags |= SCDVALID;
280 kdc_scd[unit].kdc_state = DC_BUSY;
281
282 return 0;
283}
284
285int
286scdclose(dev_t dev)
286scdclose(dev_t dev, int flags, int fmt, struct proc *p)
287{
288 int unit,part,phys;
289 struct scd_data *cd;
290 int rlen;
291 char rdata[10];
292
293 unit = scd_unit(dev);
294 if (unit >= NSCD)

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414 cd->mbx.p_offset = p->p_offset;
415 splx(s);
416
417 scd_doread(SCD_S_BEGIN,&(cd->mbx));
418 return;
419}
420
421int
287{
288 int unit,part,phys;
289 struct scd_data *cd;
290 int rlen;
291 char rdata[10];
292
293 unit = scd_unit(dev);
294 if (unit >= NSCD)

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414 cd->mbx.p_offset = p->p_offset;
415 splx(s);
416
417 scd_doread(SCD_S_BEGIN,&(cd->mbx));
418 return;
419}
420
421int
422scdioctl(dev_t dev, int cmd, caddr_t addr, int flags)
422scdioctl(dev_t dev, int cmd, caddr_t addr, int flags, struct proc *p)
423{
424 struct scd_data *cd;
425 int unit,part;
426
427 unit = scd_unit(dev);
428 part = scd_part(dev);
429 cd = scd_data + unit;
430

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424 struct scd_data *cd;
425 int unit,part;
426
427 unit = scd_unit(dev);
428 part = scd_part(dev);
429 cd = scd_data + unit;
430

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