LXR linux/sound/firewire/packets-buffer.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef SOUND_FIREWIRE_PACKETS_BUFFER_H_INCLUDED
   3#define SOUND_FIREWIRE_PACKETS_BUFFER_H_INCLUDED
   4
   5#include <linux/dma-mapping.h>
   6#include <linux/firewire.h>
   7
   8/**
   9 * struct iso_packets_buffer - manages a buffer for many packets
  10 * @iso_buffer: the memory containing the packets
  11 * @packets: an array, with each element pointing to one packet
  12 */
  13struct iso_packets_buffer {
  14        struct fw_iso_buffer iso_buffer;
  15        struct {
  16                void *buffer;
  17                unsigned int offset;
  18        } *packets;
  19};
  20
  21int iso_packets_buffer_init(struct iso_packets_buffer *b, struct fw_unit *unit,
  22                            unsigned int count, unsigned int packet_size,
  23                            enum dma_data_direction direction);
  24void iso_packets_buffer_destroy(struct iso_packets_buffer *b,
  25                                struct fw_unit *unit);
  26
  27#endif
  28