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[PATCH] w1: Userspace communication protocol over connector.

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There are three types of messages between w1 core and userspace:
1. Events. They are generated each time new master or slave device found
	either due to automatic or requested search.
2. Userspace commands. Includes read/write and search/alarm search comamnds.
3. Replies to userspace commands.

From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Evgeniy Polyakov
2006-03-23 19:11:58 +03:00
committed by Greg Kroah-Hartman
parent 81f6075ebc
commit 12003375ac
12 changed files with 448 additions and 135 deletions
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38
drivers/w1/w1_netlink.h
View File

@ -23,37 +23,55 @@
#define __W1_NETLINK_H
#include <asm/types.h>
#include <linux/connector.h>
#include "w1.h"
#define CN_W1_IDX 3
#define CN_W1_VAL 1
enum w1_netlink_message_types {
W1_SLAVE_ADD = 0,
W1_SLAVE_REMOVE,
W1_MASTER_ADD,
W1_MASTER_REMOVE,
W1_MASTER_CMD,
W1_SLAVE_CMD,
};
struct w1_netlink_msg
{
__u8 type;
__u8 reserved[3];
union
{
struct w1_reg_num id;
__u64 w1_id;
struct
{
__u8 reserved;
__u16 len;
union {
__u8 id[8];
struct w1_mst {
__u32 id;
__u32 pid;
__u32 res;
} mst;
} id;
__u8 data[0];
};
#define W1_CMD_READ 0x0
#define W1_CMD_WRITE 0x1
#define W1_CMD_SEARCH 0x2
#define W1_CMD_ALARM_SEARCH 0x3
struct w1_netlink_cmd
{
__u8 cmd;
__u8 res;
__u16 len;
__u8 data[0];
};
#ifdef __KERNEL__
void w1_netlink_send(struct w1_master *, struct w1_netlink_msg *);
int dev_init_netlink(struct w1_master *dev);
void dev_fini_netlink(struct w1_master *dev);
int w1_init_netlink(void);
void w1_fini_netlink(void);
#endif /* __KERNEL__ */
#endif /* __W1_NETLINK_H */