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