Cross Reference: /drivers/staging/comedi/comedi

Lines Matching refs:async
64 	struct comedi_async *async = s->async;
68 	if (async->prealloc_buf) {
69 		vunmap(async->prealloc_buf);
70 		async->prealloc_buf = NULL;
71 		async->prealloc_bufsz = 0;
75 	bm = async->buf_map;
76 	async->buf_map = NULL;
85 	struct comedi_async *async = s->async;
98 	bm = kzalloc(sizeof(*async->buf_map), GFP_KERNEL);
104 	async->buf_map = bm;
145 		async->prealloc_buf = vmap(pages, n_pages, VM_MAP,
164 /* returns s->async->buf_map and increments its kref refcount */
168 	struct comedi_async *async = s->async;
172 	if (!async)
176 	bm = async->buf_map;
189 	struct comedi_buf_map *bm = s->async->buf_map;
197 	struct comedi_async *async = s->async;
203 	if (async->prealloc_buf && async->prealloc_bufsz == new_size)
215 		if (!async->prealloc_buf) {
221 	async->prealloc_bufsz = new_size;
228 	struct comedi_async *async = s->async;
230 	async->buf_write_alloc_count = 0;
231 	async->buf_write_count = 0;
232 	async->buf_read_alloc_count = 0;
233 	async->buf_read_count = 0;
235 	async->buf_write_ptr = 0;
236 	async->buf_read_ptr = 0;
238 	async->cur_chan = 0;
239 	async->scan_progress = 0;
240 	async->munge_chan = 0;
241 	async->munge_count = 0;
242 	async->munge_ptr = 0;
244 	async->events = 0;
249 	struct comedi_async *async = s->async;
250 	unsigned int free_end = async->buf_read_count + async->prealloc_bufsz;
252 	return free_end - async->buf_write_alloc_count;
259 	struct comedi_async *async = s->async;
265 	async->buf_write_alloc_count += nbytes;
268 	 * ensure the async buffer 'counts' are read and updated
291 	struct comedi_async *async = s->async;
295 	if (!s->munge || (async->cmd.flags & CMDF_RAWDATA)) {
296 		async->munge_count += num_bytes;
305 			buf_end = async->prealloc_bufsz - async->munge_ptr;
310 				 async->prealloc_buf + async->munge_ptr,
311 				 block_size, async->munge_chan);
315 			 * async buffer munge_count is incremented
319 			async->munge_chan += block_size / num_sample_bytes;
320 			async->munge_chan %= async->cmd.chanlist_len;
321 			async->munge_count += block_size;
322 			async->munge_ptr += block_size;
323 			async->munge_ptr %= async->prealloc_bufsz;
333 	struct comedi_async *async = s->async;
335 	return async->buf_write_alloc_count - async->buf_write_count;
342 	struct comedi_async *async = s->async;
348 	async->buf_write_count += nbytes;
349 	async->buf_write_ptr += nbytes;
350 	comedi_buf_munge(s, async->buf_write_count - async->munge_count);
351 	if (async->buf_write_ptr >= async->prealloc_bufsz)
352 		async->buf_write_ptr %= async->prealloc_bufsz;
360 	struct comedi_async *async = s->async;
363 	if (!async)
366 	num_bytes = async->munge_count - async->buf_read_count;
369 	 * ensure the async buffer 'counts' are read before we
382 	struct comedi_async *async = s->async;
385 	available = async->munge_count - async->buf_read_alloc_count;
389 	async->buf_read_alloc_count += nbytes;
392 	 * ensure the async buffer 'counts' are read before we
401 static unsigned int comedi_buf_read_n_allocated(struct comedi_async *async)
403 	return async->buf_read_alloc_count - async->buf_read_count;
410 	struct comedi_async *async = s->async;
415 	 * the async read count is incremented
419 	allocated = comedi_buf_read_n_allocated(async);
423 	async->buf_read_count += nbytes;
424 	async->buf_read_ptr += nbytes;
425 	async->buf_read_ptr %= async->prealloc_bufsz;
432 	struct comedi_async *async = s->async;
436 		async->events |= COMEDI_CB_ERROR;
439 	*(unsigned short *)(async->prealloc_buf + async->buf_write_ptr) = x;
447 	struct comedi_async *async = s->async;
453 	*x = *(unsigned short *)(async->prealloc_buf + async->buf_read_ptr);
462 	struct comedi_async *async = s->async;
463 	unsigned int write_ptr = async->buf_write_ptr + offset;
465 	if (write_ptr >= async->prealloc_bufsz)
466 		write_ptr %= async->prealloc_bufsz;
471 		if (write_ptr + num_bytes > async->prealloc_bufsz)
472 			block_size = async->prealloc_bufsz - write_ptr;
476 		memcpy(async->prealloc_buf + write_ptr, data, block_size);
490 	struct comedi_async *async = s->async;
491 	unsigned int read_ptr = async->buf_read_ptr + offset;
493 	if (read_ptr >= async->prealloc_bufsz)
494 		read_ptr %= async->prealloc_bufsz;
499 		src = async->prealloc_buf + read_ptr;
501 		if (nbytes >= async->prealloc_bufsz - read_ptr)
502 			block_size = async->prealloc_bufsz - read_ptr;
530 	struct comedi_async *async = s->async;
539 		async->events |= COMEDI_CB_OVERFLOW;
546 	async->events |= COMEDI_CB_BLOCK;
573 	s->async->events |= COMEDI_CB_BLOCK;