1#ifndef SOUND_FIREWIRE_ISO_RESOURCES_H_INCLUDED
 2#define SOUND_FIREWIRE_ISO_RESOURCES_H_INCLUDED
 3
 4#include <linux/mutex.h>
 5#include <linux/types.h>
 6
 7struct fw_unit;
 8
 9/**
10 * struct fw_iso_resources - manages channel/bandwidth allocation
11 * @channels_mask: if the device does not support all channel numbers, set this
12 *                 bit mask to something else than the default (all ones)
13 *
14 * This structure manages (de)allocation of isochronous resources (channel and
15 * bandwidth) for one isochronous stream.
16 */
17struct fw_iso_resources {
18	u64 channels_mask;
19	/* private: */
20	struct fw_unit *unit;
21	struct mutex mutex;
22	unsigned int channel;
23	unsigned int bandwidth; /* in bandwidth units, without overhead */
24	unsigned int bandwidth_overhead;
25	int generation; /* in which allocation is valid */
26	bool allocated;
27};
28
29int fw_iso_resources_init(struct fw_iso_resources *r,
30			  struct fw_unit *unit);
31void fw_iso_resources_destroy(struct fw_iso_resources *r);
32
33int fw_iso_resources_allocate(struct fw_iso_resources *r,
34			      unsigned int max_payload_bytes, int speed);
35int fw_iso_resources_update(struct fw_iso_resources *r);
36void fw_iso_resources_free(struct fw_iso_resources *r);
37
38#endif

 1#ifndef SOUND_FIREWIRE_ISO_RESOURCES_H_INCLUDED
 2#define SOUND_FIREWIRE_ISO_RESOURCES_H_INCLUDED
 3
 4#include <linux/mutex.h>
 5#include <linux/types.h>
 6
 7struct fw_unit;
 8
 9/**
10 * struct fw_iso_resources - manages channel/bandwidth allocation
11 * @channels_mask: if the device does not support all channel numbers, set this
12 *                 bit mask to something else than the default (all ones)
13 *
14 * This structure manages (de)allocation of isochronous resources (channel and
15 * bandwidth) for one isochronous stream.
16 */
17struct fw_iso_resources {
18	u64 channels_mask;
19	/* private: */
20	struct fw_unit *unit;
21	struct mutex mutex;
22	unsigned int channel;
23	unsigned int bandwidth; /* in bandwidth units, without overhead */
24	unsigned int bandwidth_overhead;
25	int generation; /* in which allocation is valid */
26	bool allocated;
27};
28
29int fw_iso_resources_init(struct fw_iso_resources *r,
30			  struct fw_unit *unit);
31void fw_iso_resources_destroy(struct fw_iso_resources *r);
32
33int fw_iso_resources_allocate(struct fw_iso_resources *r,
34			      unsigned int max_payload_bytes, int speed);
35int fw_iso_resources_update(struct fw_iso_resources *r);
36void fw_iso_resources_free(struct fw_iso_resources *r);
37
38#endif