Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / w1 / w1_netlink.h

diff --git a/kernel/drivers/w1/w1_netlink.h b/kernel/drivers/w1/w1_netlink.h
new file mode 100644 (file)
index 0000000..c99a9ce
--- /dev/null
+++ b/kernel/drivers/w1/w1_netlink.h
@@ -0,0 +1,147 @@
+/*
+ * w1_netlink.h
+ *
+ * Copyright (c) 2003 Evgeniy Polyakov <zbr@ioremap.net>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __W1_NETLINK_H
+#define __W1_NETLINK_H
+
+#include <asm/types.h>
+#include <linux/connector.h>
+
+#include "w1.h"
+
+/**
+ * enum w1_cn_msg_flags - bitfield flags for struct cn_msg.flags
+ *
+ * @W1_CN_BUNDLE: Request bundling replies into fewer messagse.  Be prepared
+ * to handle multiple struct cn_msg, struct w1_netlink_msg, and
+ * struct w1_netlink_cmd in one packet.
+ */
+enum w1_cn_msg_flags {
+       W1_CN_BUNDLE = 1,
+};
+
+/**
+ * enum w1_netlink_message_types - message type
+ *
+ * @W1_SLAVE_ADD: notification that a slave device was added
+ * @W1_SLAVE_REMOVE: notification that a slave device was removed
+ * @W1_MASTER_ADD: notification that a new bus master was added
+ * @W1_MASTER_REMOVE: notification that a bus masterwas removed
+ * @W1_MASTER_CMD: initiate operations on a specific master
+ * @W1_SLAVE_CMD: sends reset, selects the slave, then does a read/write/touch
+ * operation
+ * @W1_LIST_MASTERS: used to determine the bus master identifiers
+ */
+enum w1_netlink_message_types {
+       W1_SLAVE_ADD = 0,
+       W1_SLAVE_REMOVE,
+       W1_MASTER_ADD,
+       W1_MASTER_REMOVE,
+       W1_MASTER_CMD,
+       W1_SLAVE_CMD,
+       W1_LIST_MASTERS,
+};
+
+/**
+ * struct w1_netlink_msg - holds w1 message type, id, and result
+ *
+ * @type: one of enum w1_netlink_message_types
+ * @status: kernel feedback for success 0 or errno failure value
+ * @len: length of data following w1_netlink_msg
+ * @id: union holding master bus id (msg.id) and slave device id (id[8]).
+ * @data: start address of any following data
+ *
+ * The base message structure for w1 messages over netlink.
+ * The netlink connector data sequence is, struct nlmsghdr, struct cn_msg,
+ * then one or more struct w1_netlink_msg (each with optional data).
+ */
+struct w1_netlink_msg
+{
+       __u8                            type;
+       __u8                            status;
+       __u16                           len;
+       union {
+               __u8                    id[8];
+               struct w1_mst {
+                       __u32           id;
+                       __u32           res;
+               } mst;
+       } id;
+       __u8                            data[0];
+};
+
+/**
+ * enum w1_commands - commands available for master or slave operations
+ *
+ * @W1_CMD_READ: read len bytes
+ * @W1_CMD_WRITE: write len bytes
+ * @W1_CMD_SEARCH: initiate a standard search, returns only the slave
+ * devices found during that search
+ * @W1_CMD_ALARM_SEARCH: search for devices that are currently alarming
+ * @W1_CMD_TOUCH: Touches a series of bytes.
+ * @W1_CMD_RESET: sends a bus reset on the given master
+ * @W1_CMD_SLAVE_ADD: adds a slave to the given master,
+ * 8 byte slave id at data[0]
+ * @W1_CMD_SLAVE_REMOVE: removes a slave to the given master,
+ * 8 byte slave id at data[0]
+ * @W1_CMD_LIST_SLAVES: list of slaves registered on this master
+ * @W1_CMD_MAX: number of available commands
+ */
+enum w1_commands {
+       W1_CMD_READ = 0,
+       W1_CMD_WRITE,
+       W1_CMD_SEARCH,
+       W1_CMD_ALARM_SEARCH,
+       W1_CMD_TOUCH,
+       W1_CMD_RESET,
+       W1_CMD_SLAVE_ADD,
+       W1_CMD_SLAVE_REMOVE,
+       W1_CMD_LIST_SLAVES,
+       W1_CMD_MAX
+};
+
+/**
+ * struct w1_netlink_cmd - holds the command and data
+ *
+ * @cmd: one of enum w1_commands
+ * @res: reserved
+ * @len: length of data following w1_netlink_cmd
+ * @data: start address of any following data
+ *
+ * One or more struct w1_netlink_cmd is placed starting at w1_netlink_msg.data
+ * each with optional data.
+ */
+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 w1_init_netlink(void);
+void w1_fini_netlink(void);
+
+#endif /* __KERNEL__ */
+#endif /* __W1_NETLINK_H */