tag	line	file	source code
dmap	488	drivers/sound/dev_table.h	int sound_alloc_dmap (int dev, struct dma_buffparms *dmap, int chan);
dmap	489	drivers/sound/dev_table.h	void sound_free_dmap (int dev, struct dma_buffparms *dmap);
dmap	490	drivers/sound/dev_table.h	extern int soud_map_buffer (int dev, struct dma_buffparms *dmap, buffmem_desc *info);
dmap	65	drivers/sound/dmabuf.c	reorganize_buffers (int dev, struct dma_buffparms *dmap)
dmap	76	drivers/sound/dmabuf.c	if (dmap->fragment_size == 0)
dmap	84	drivers/sound/dmabuf.c	dmap->neutral_byte = 0x80;
dmap	86	drivers/sound/dmabuf.c	dmap->neutral_byte = 0x00;
dmap	114	drivers/sound/dmabuf.c	if (dmap->subdivision == 0)  /* Not already set */
dmap	115	drivers/sound/dmabuf.c	dmap->subdivision = 1;  /* Init to default value */
dmap	117	drivers/sound/dmabuf.c	bsz /= dmap->subdivision;
dmap	122	drivers/sound/dmabuf.c	dmap->fragment_size = bsz;
dmap	130	drivers/sound/dmabuf.c	if (dmap->fragment_size > (audio_devs[dev]->buffsize / 2))
dmap	131	drivers/sound/dmabuf.c	dmap->fragment_size = (audio_devs[dev]->buffsize / 2);
dmap	132	drivers/sound/dmabuf.c	bsz = dmap->fragment_size;
dmap	140	drivers/sound/dmabuf.c	if (n > dmap->max_fragments)
dmap	141	drivers/sound/dmabuf.c	n = dmap->max_fragments;
dmap	142	drivers/sound/dmabuf.c	dmap->nbufs = n;
dmap	143	drivers/sound/dmabuf.c	dmap->bytes_in_use = n * bsz;
dmap	145	drivers/sound/dmabuf.c	for (i = 0; i < dmap->nbufs; i++)
dmap	147	drivers/sound/dmabuf.c	dmap->counts[i] = 0;
dmap	150	drivers/sound/dmabuf.c	dmap->flags |= DMA_ALLOC_DONE;
dmap	154	drivers/sound/dmabuf.c	dma_init_buffers (int dev, struct dma_buffparms *dmap)
dmap	156	drivers/sound/dmabuf.c	if (dmap == audio_devs[dev]->dmap_out)
dmap	169	drivers/sound/dmabuf.c	dmap->flags = DMA_BUSY;  /* Other flags off */
dmap	170	drivers/sound/dmabuf.c	dmap->qlen = dmap->qhead = dmap->qtail = 0;
dmap	171	drivers/sound/dmabuf.c	dmap->nbufs = 1;
dmap	172	drivers/sound/dmabuf.c	dmap->bytes_in_use = audio_devs[dev]->buffsize;
dmap	174	drivers/sound/dmabuf.c	dmap->dma_mode = DMODE_NONE;
dmap	175	drivers/sound/dmabuf.c	dmap->mapping_flags = 0;
dmap	176	drivers/sound/dmabuf.c	dmap->neutral_byte = 0x00;
dmap	180	drivers/sound/dmabuf.c	open_dmap (int dev, int mode, struct dma_buffparms *dmap, int chan)
dmap	182	drivers/sound/dmabuf.c	if (dmap->flags & DMA_BUSY)
dmap	188	drivers/sound/dmabuf.c	if ((err = sound_alloc_dmap (dev, dmap, chan)) < 0)
dmap	192	drivers/sound/dmabuf.c	if (dmap->raw_buf == NULL)
dmap	201	drivers/sound/dmabuf.c	dmap->open_mode = mode;
dmap	202	drivers/sound/dmabuf.c	dmap->subdivision = dmap->underrun_count = 0;
dmap	203	drivers/sound/dmabuf.c	dmap->fragment_size = 0;
dmap	204	drivers/sound/dmabuf.c	dmap->max_fragments = 65536;  /* Just a large value */
dmap	205	drivers/sound/dmabuf.c	dmap->byte_counter = 0;
dmap	207	drivers/sound/dmabuf.c	dma_init_buffers (dev, dmap);
dmap	213	drivers/sound/dmabuf.c	close_dmap (int dev, struct dma_buffparms *dmap, int chan)
dmap	217	drivers/sound/dmabuf.c	if (dmap->flags & DMA_BUSY)
dmap	218	drivers/sound/dmabuf.c	dmap->dma_mode = DMODE_NONE;
dmap	219	drivers/sound/dmabuf.c	dmap->flags &= ~DMA_BUSY;
dmap	221	drivers/sound/dmabuf.c	sound_free_dmap (dev, dmap);
dmap	441	drivers/sound/dmabuf.c	activate_recording (int dev, struct dma_buffparms *dmap)
dmap	446	drivers/sound/dmabuf.c	if (dmap->flags & DMA_RESTART)
dmap	449	drivers/sound/dmabuf.c	dmap->flags &= ~DMA_RESTART;
dmap	452	drivers/sound/dmabuf.c	if (dmap->dma_mode == DMODE_OUTPUT)  /* Direction change */
dmap	456	drivers/sound/dmabuf.c	dmap->dma_mode = DMODE_NONE;
dmap	459	drivers/sound/dmabuf.c	if (!(dmap->flags & DMA_ALLOC_DONE))
dmap	460	drivers/sound/dmabuf.c	reorganize_buffers (dev, dmap);
dmap	462	drivers/sound/dmabuf.c	if (!dmap->dma_mode)
dmap	467	drivers/sound/dmabuf.c	dmap->fragment_size, dmap->nbufs)) < 0)
dmap	471	drivers/sound/dmabuf.c	dmap->dma_mode = DMODE_INPUT;
dmap	474	drivers/sound/dmabuf.c	if (!(dmap->flags & DMA_ACTIVE))
dmap	476	drivers/sound/dmabuf.c	audio_devs[dev]->start_input (dev, dmap->raw_buf_phys +
dmap	477	drivers/sound/dmabuf.c	dmap->qtail * dmap->fragment_size,
dmap	478	drivers/sound/dmabuf.c	dmap->fragment_size, 0,
dmap	480	drivers/sound/dmabuf.c	!(dmap->flags & DMA_STARTED));
dmap	481	drivers/sound/dmabuf.c	dmap->flags |= DMA_ACTIVE | DMA_STARTED;
dmap	494	drivers/sound/dmabuf.c	struct dma_buffparms *dmap = audio_devs[dev]->dmap_in;
dmap	503	drivers/sound/dmabuf.c	else if (!dmap->qlen)
dmap	507	drivers/sound/dmabuf.c	if ((err = activate_recording (dev, dmap)) < 0)
dmap	563	drivers/sound/dmabuf.c	if (!dmap->qlen)
dmap	566	drivers/sound/dmabuf.c	*buf = &dmap->raw_buf[dmap->qhead * dmap->fragment_size + dmap->counts[dmap->qhead]];
dmap	567	drivers/sound/dmabuf.c	*len = dmap->fragment_size - dmap->counts[dmap->qhead];
dmap	569	drivers/sound/dmabuf.c	return dmap->qhead;
dmap	575	drivers/sound/dmabuf.c	struct dma_buffparms *dmap = audio_devs[dev]->dmap_in;
dmap	577	drivers/sound/dmabuf.c	int             p = dmap->counts[dmap->qhead] + c;
dmap	584	drivers/sound/dmabuf.c	else if (p >= dmap->fragment_size)
dmap	586	drivers/sound/dmabuf.c	dmap->counts[dmap->qhead] = 0;
dmap	587	drivers/sound/dmabuf.c	if (dmap->qlen <= 0 || dmap->qlen > dmap->nbufs)
dmap	589	drivers/sound/dmabuf.c	dev, dmap->qlen, dmap->nbufs);
dmap	590	drivers/sound/dmabuf.c	dmap->qlen--;
dmap	591	drivers/sound/dmabuf.c	dmap->qhead = (dmap->qhead + 1) % dmap->nbufs;
dmap	594	drivers/sound/dmabuf.c	dmap->counts[dmap->qhead] = p;
dmap	600	drivers/sound/dmabuf.c	dma_subdivide (int dev, struct dma_buffparms *dmap, ioctl_arg arg, int fact)
dmap	604	drivers/sound/dmabuf.c	fact = dmap->subdivision;
dmap	610	drivers/sound/dmabuf.c	if (dmap->subdivision != 0 ||
dmap	611	drivers/sound/dmabuf.c	dmap->fragment_size)  /* Loo late to change */
dmap	620	drivers/sound/dmabuf.c	dmap->subdivision = fact;
dmap	625	drivers/sound/dmabuf.c	dma_set_fragment (int dev, struct dma_buffparms *dmap, ioctl_arg arg, int fact)
dmap	632	drivers/sound/dmabuf.c	if (dmap->subdivision != 0 ||
dmap	633	drivers/sound/dmabuf.c	dmap->fragment_size)  /* Loo late to change */
dmap	648	drivers/sound/dmabuf.c	dmap->fragment_size = (1 << bytes);
dmap	649	drivers/sound/dmabuf.c	dmap->max_fragments = count;
dmap	651	drivers/sound/dmabuf.c	if (dmap->fragment_size > audio_devs[dev]->buffsize)
dmap	652	drivers/sound/dmabuf.c	dmap->fragment_size = audio_devs[dev]->buffsize;
dmap	654	drivers/sound/dmabuf.c	if (dmap->fragment_size == audio_devs[dev]->buffsize &&
dmap	656	drivers/sound/dmabuf.c	dmap->fragment_size /= 2;  /* Needs at least 2 buffers */
dmap	658	drivers/sound/dmabuf.c	dmap->subdivision = 1;  /* Disable SNDCTL_DSP_SUBDIVIDE */
dmap	663	drivers/sound/dmabuf.c	get_buffer_pointer (int dev, int chan, struct dma_buffparms *dmap)
dmap	670	drivers/sound/dmabuf.c	if (!(dmap->flags & DMA_ACTIVE))
dmap	683	drivers/sound/dmabuf.c	return dmap->bytes_in_use - pos;
dmap	686	drivers/sound/dmabuf.c	pos = dmap->fragment_size - pos;
dmap	757	drivers/sound/dmabuf.c	struct dma_buffparms *dmap = dmap_out;
dmap	762	drivers/sound/dmabuf.c	dmap = dmap_in;
dmap	764	drivers/sound/dmabuf.c	if (dmap->mapping_flags & DMA_MAP_MAPPED)
dmap	767	drivers/sound/dmabuf.c	if (!(dmap->flags & DMA_ALLOC_DONE))
dmap	768	drivers/sound/dmabuf.c	reorganize_buffers (dev, dmap);
dmap	770	drivers/sound/dmabuf.c	info->fragstotal = dmap->nbufs;
dmap	773	drivers/sound/dmabuf.c	info->fragments = dmap->qlen;
dmap	780	drivers/sound/dmabuf.c	info->fragments = dmap->nbufs - dmap->qlen;
dmap	796	drivers/sound/dmabuf.c	else if (info->fragments > dmap->nbufs)
dmap	797	drivers/sound/dmabuf.c	info->fragments = dmap->nbufs;
dmap	799	drivers/sound/dmabuf.c	info->fragsize = dmap->fragment_size;
dmap	800	drivers/sound/dmabuf.c	info->bytes = info->fragments * dmap->fragment_size;
dmap	802	drivers/sound/dmabuf.c	if (cmd == SNDCTL_DSP_GETISPACE && dmap->qlen)
dmap	803	drivers/sound/dmabuf.c	info->bytes -= dmap->counts[dmap->qhead];
dmap	927	drivers/sound/dmabuf.c	struct dma_buffparms *dmap = audio_devs[dev]->dmap_out;
dmap	929	drivers/sound/dmabuf.c	if (dmap->qlen >= dmap->nbufs)  /* No space at all */
dmap	937	drivers/sound/dmabuf.c	max = dmap->max_fragments;
dmap	938	drivers/sound/dmabuf.c	len = dmap->qlen;
dmap	960	drivers/sound/dmabuf.c	struct dma_buffparms *dmap = audio_devs[dev]->dmap_out;
dmap	968	drivers/sound/dmabuf.c	if (dmap->dma_mode == DMODE_INPUT)  /* Direction change */
dmap	971	drivers/sound/dmabuf.c	dmap->dma_mode = DMODE_NONE;
dmap	973	drivers/sound/dmabuf.c	else if (dmap->flags & DMA_RESTART)  /* Restart buffering */
dmap	979	drivers/sound/dmabuf.c	dmap->flags &= ~DMA_RESTART;
dmap	981	drivers/sound/dmabuf.c	if (!(dmap->flags & DMA_ALLOC_DONE))
dmap	982	drivers/sound/dmabuf.c	reorganize_buffers (dev, dmap);
dmap	984	drivers/sound/dmabuf.c	if (!dmap->dma_mode)
dmap	988	drivers/sound/dmabuf.c	dmap->dma_mode = DMODE_OUTPUT;
dmap	990	drivers/sound/dmabuf.c	dmap->fragment_size, dmap->nbufs)) < 0)
dmap	1063	drivers/sound/dmabuf.c	*buf = dmap->raw_buf + dmap->qtail * dmap->fragment_size;
dmap	1064	drivers/sound/dmabuf.c	*size = dmap->fragment_size;
dmap	1065	drivers/sound/dmabuf.c	dmap->counts[dmap->qtail] = 0;
dmap	1067	drivers/sound/dmabuf.c	return dmap->qtail;
dmap	1073	drivers/sound/dmabuf.c	struct dma_buffparms *dmap = audio_devs[dev]->dmap_out;
dmap	1081	drivers/sound/dmabuf.c	l = dmap->fragment_size;
dmap	1082	drivers/sound/dmabuf.c	dmap->counts[dmap->qtail] = l;
dmap	1083	drivers/sound/dmabuf.c	dmap->flags &= ~DMA_RESTART;
dmap	1084	drivers/sound/dmabuf.c	dmap->qtail = (dmap->qtail + 1) % dmap->nbufs;
dmap	1089	drivers/sound/dmabuf.c	if (buff_no != dmap->qtail)
dmap	1090	drivers/sound/dmabuf.c	printk ("Sound warning: DMA buffers out of sync %d != %d\n", buff_no, dmap->qtail);
dmap	1092	drivers/sound/dmabuf.c	dmap->qlen++;
dmap	1093	drivers/sound/dmabuf.c	if (dmap->qlen <= 0 || dmap->qlen > dmap->nbufs)
dmap	1095	drivers/sound/dmabuf.c	dev, dmap->qlen, dmap->nbufs);
dmap	1097	drivers/sound/dmabuf.c	dmap->counts[dmap->qtail] = l;
dmap	1099	drivers/sound/dmabuf.c	if ((l != dmap->fragment_size) &&
dmap	1102	drivers/sound/dmabuf.c	dmap->flags |= DMA_RESTART;
dmap	1104	drivers/sound/dmabuf.c	dmap->flags &= ~DMA_RESTART;
dmap	1106	drivers/sound/dmabuf.c	dmap->qtail = (dmap->qtail + 1) % dmap->nbufs;
dmap	1109	drivers/sound/dmabuf.c	if (!(dmap->flags & DMA_ACTIVE))
dmap	1111	drivers/sound/dmabuf.c	dmap->flags |= DMA_ACTIVE;
dmap	1112	drivers/sound/dmabuf.c	audio_devs[dev]->output_block (dev, dmap->raw_buf_phys +
dmap	1113	drivers/sound/dmabuf.c	dmap->qhead * dmap->fragment_size,
dmap	1114	drivers/sound/dmabuf.c	dmap->counts[dmap->qhead], 0,
dmap	1116	drivers/sound/dmabuf.c	!(dmap->flags & DMA_STARTED));
dmap	1117	drivers/sound/dmabuf.c	dmap->flags |= DMA_STARTED;
dmap	1130	drivers/sound/dmabuf.c	struct dma_buffparms *dmap;
dmap	1136	drivers/sound/dmabuf.c	dmap = audio_devs[dev]->dmap_out;
dmap	1141	drivers/sound/dmabuf.c	dmap = audio_devs[dev]->dmap_in;
dmap	1159	drivers/sound/dmabuf.c	set_dma_addr (chan, dmap->raw_buf_phys);
dmap	1160	drivers/sound/dmabuf.c	set_dma_count (chan, dmap->bytes_in_use);
dmap	1218	drivers/sound/dmabuf.c	struct dma_buffparms *dmap = audio_devs[dev]->dmap_out;
dmap	1220	drivers/sound/dmabuf.c	dmap->byte_counter += dmap->counts[dmap->qhead];
dmap	1223	drivers/sound/dmabuf.c	if (dmap->mapping_flags & DMA_MAP_MAPPED)
dmap	1227	drivers/sound/dmabuf.c	int             p = dmap->fragment_size * dmap->qhead;
dmap	1229	drivers/sound/dmabuf.c	memset (dmap->raw_buf + p,
dmap	1230	drivers/sound/dmabuf.c	dmap->neutral_byte,
dmap	1231	drivers/sound/dmabuf.c	dmap->fragment_size);
dmap	1233	drivers/sound/dmabuf.c	dmap->qhead = (dmap->qhead + 1) % dmap->nbufs;
dmap	1234	drivers/sound/dmabuf.c	dmap->qlen++;    /* Yes increment it (don't decrement) */
dmap	1235	drivers/sound/dmabuf.c	dmap->flags &= ~DMA_ACTIVE;
dmap	1236	drivers/sound/dmabuf.c	dmap->counts[dmap->qhead] = dmap->fragment_size;
dmap	1240	drivers/sound/dmabuf.c	audio_devs[dev]->output_block (dev, dmap->raw_buf_phys +
dmap	1241	drivers/sound/dmabuf.c	dmap->qhead * dmap->fragment_size,
dmap	1242	drivers/sound/dmabuf.c	dmap->counts[dmap->qhead], 1,
dmap	1248	drivers/sound/dmabuf.c	dmap->flags |= DMA_ACTIVE;
dmap	1252	drivers/sound/dmabuf.c	if (dmap->qlen <= 0 || dmap->qlen > dmap->nbufs)
dmap	1255	drivers/sound/dmabuf.c	dev, dmap->qlen, dmap->nbufs);
dmap	1259	drivers/sound/dmabuf.c	dmap->qlen--;
dmap	1260	drivers/sound/dmabuf.c	dmap->qhead = (dmap->qhead + 1) % dmap->nbufs;
dmap	1261	drivers/sound/dmabuf.c	dmap->flags &= ~DMA_ACTIVE;
dmap	1263	drivers/sound/dmabuf.c	if (dmap->qlen)
dmap	1267	drivers/sound/dmabuf.c	audio_devs[dev]->output_block (dev, dmap->raw_buf_phys +
dmap	1268	drivers/sound/dmabuf.c	dmap->qhead * dmap->fragment_size,
dmap	1269	drivers/sound/dmabuf.c	dmap->counts[dmap->qhead], 1,
dmap	1275	drivers/sound/dmabuf.c	dmap->flags |= DMA_ACTIVE;
dmap	1279	drivers/sound/dmabuf.c	dmap->underrun_count++;
dmap	1288	drivers/sound/dmabuf.c	dmap->flags |= DMA_RESTART;
dmap	1290	drivers/sound/dmabuf.c	dmap->flags &= ~DMA_RESTART;
dmap	1310	drivers/sound/dmabuf.c	struct dma_buffparms *dmap = audio_devs[dev]->dmap_in;
dmap	1312	drivers/sound/dmabuf.c	dmap->byte_counter += dmap->fragment_size;
dmap	1315	drivers/sound/dmabuf.c	if (dmap->mapping_flags & DMA_MAP_MAPPED)
dmap	1317	drivers/sound/dmabuf.c	dmap->qtail = (dmap->qtail + 1) % dmap->nbufs;
dmap	1318	drivers/sound/dmabuf.c	dmap->qlen++;
dmap	1322	drivers/sound/dmabuf.c	audio_devs[dev]->start_input (dev, dmap->raw_buf_phys +
dmap	1323	drivers/sound/dmabuf.c	dmap->qtail * dmap->fragment_size,
dmap	1324	drivers/sound/dmabuf.c	dmap->fragment_size, 1,
dmap	1331	drivers/sound/dmabuf.c	dmap->flags |= DMA_ACTIVE;
dmap	1333	drivers/sound/dmabuf.c	else if (dmap->qlen == (dmap->nbufs - 1))
dmap	1336	drivers/sound/dmabuf.c	dmap->underrun_count++;
dmap	1343	drivers/sound/dmabuf.c	dmap->flags &= ~DMA_ACTIVE;
dmap	1345	drivers/sound/dmabuf.c	dmap->flags |= DMA_RESTART;
dmap	1347	drivers/sound/dmabuf.c	dmap->flags &= ~DMA_RESTART;
dmap	1351	drivers/sound/dmabuf.c	dmap->qlen++;
dmap	1352	drivers/sound/dmabuf.c	if (dmap->qlen <= 0 || dmap->qlen > dmap->nbufs)
dmap	1354	drivers/sound/dmabuf.c	dev, dmap->qlen, dmap->nbufs);
dmap	1355	drivers/sound/dmabuf.c	dmap->qtail = (dmap->qtail + 1) % dmap->nbufs;
dmap	1359	drivers/sound/dmabuf.c	audio_devs[dev]->start_input (dev, dmap->raw_buf_phys +
dmap	1360	drivers/sound/dmabuf.c	dmap->qtail * dmap->fragment_size,
dmap	1361	drivers/sound/dmabuf.c	dmap->fragment_size, 1,
dmap	1368	drivers/sound/dmabuf.c	dmap->flags |= DMA_ACTIVE;
dmap	1448	drivers/sound/dmabuf.c	struct dma_buffparms *dmap;
dmap	1454	drivers/sound/dmabuf.c	dmap = audio_devs[dev]->dmap_in;
dmap	1456	drivers/sound/dmabuf.c	if (dmap->dma_mode != DMODE_INPUT)
dmap	1458	drivers/sound/dmabuf.c	if ((audio_devs[dev]->flags & DMA_DUPLEX) && !dmap->qlen &&
dmap	1466	drivers/sound/dmabuf.c	activate_recording (dev, dmap);
dmap	1472	drivers/sound/dmabuf.c	if (!dmap->qlen)
dmap	1485	drivers/sound/dmabuf.c	dmap = audio_devs[dev]->dmap_out;
dmap	1486	drivers/sound/dmabuf.c	if (dmap->dma_mode == DMODE_INPUT)
dmap	1491	drivers/sound/dmabuf.c	if (dmap->dma_mode == DMODE_NONE)
dmap	249	drivers/sound/soundcard.c	struct dma_buffparms *dmap = NULL;
dmap	271	drivers/sound/soundcard.c	dmap = audio_devs[dev]->dmap_in;
dmap	275	drivers/sound/soundcard.c	dmap = audio_devs[dev]->dmap_out;
dmap	283	drivers/sound/soundcard.c	if (dmap == NULL)
dmap	289	drivers/sound/soundcard.c	if (dmap->raw_buf == NULL)
dmap	295	drivers/sound/soundcard.c	if (dmap->mapping_flags)
dmap	309	drivers/sound/soundcard.c	if (size != dmap->bytes_in_use)
dmap	312	drivers/sound/soundcard.c	size, dmap->bytes_in_use);
dmap	315	drivers/sound/soundcard.c	if (remap_page_range (vma->vm_start, dmap->raw_buf_phys, vma->vm_end - vma->vm_start, vma->vm_page_prot))
dmap	322	drivers/sound/soundcard.c	dmap->mapping_flags |= DMA_MAP_MAPPED;
dmap	324	drivers/sound/soundcard.c	memset (dmap->raw_buf,
dmap	325	drivers/sound/soundcard.c	dmap->neutral_byte,
dmap	326	drivers/sound/soundcard.c	dmap->bytes_in_use);
dmap	605	drivers/sound/soundcard.c	sound_alloc_dmap (int dev, struct dma_buffparms *dmap, int chan)
dmap	610	drivers/sound/soundcard.c	if (dmap->raw_buf != NULL)
dmap	621	drivers/sound/soundcard.c	dmap->raw_buf = NULL;
dmap	679	drivers/sound/soundcard.c	dmap->raw_buf = start_addr;
dmap	680	drivers/sound/soundcard.c	dmap->raw_buf_phys = (unsigned long) start_addr;
dmap	695	drivers/sound/soundcard.c	sound_free_dmap (int dev, struct dma_buffparms *dmap)
dmap	697	drivers/sound/soundcard.c	if (dmap->raw_buf == NULL)
dmap	707	drivers/sound/soundcard.c	start_addr = (unsigned long) dmap->raw_buf;
dmap	718	drivers/sound/soundcard.c	free_pages ((unsigned long) dmap->raw_buf, sz);
dmap	720	drivers/sound/soundcard.c	dmap->raw_buf = NULL;
dmap	724	drivers/sound/soundcard.c	soud_map_buffer (int dev, struct dma_buffparms *dmap, buffmem_desc * info)