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Date: Thu, 4 Dec 2008 17:50:10 +0300 From: Evgeniy Polyakov <zbr@...emap.net> To: Andrew Morton <akpm@...ux-foundation.org> Cc: linux-kernel@...r.kernel.org, Evgeniy Polyakov <zbr@...emap.net> Subject: [W1] W1 search/alarm search documentation. Signed-off-by: Evgeniy Polyakov <zbr@...emap.net> --- Documentation/w1/w1.netlink | 18 +++++++++++++++++- 1 files changed, 17 insertions(+), 1 deletions(-) diff --git a/Documentation/w1/w1.netlink b/Documentation/w1/w1.netlink index eae5c8b..c98ca30 100644 --- a/Documentation/w1/w1.netlink +++ b/Documentation/w1/w1.netlink @@ -74,7 +74,23 @@ format: Each message is at most 4k in size, so if number of master devices exceeds this, it will be split into several messages, cn.seq will be increased for each one. - + +W1 search and alarm search commands. +request: +[cn_msg] + [w1_netlink_msg type = W1_MASTER_CMD id is equal to the bus master id to use for searching] + [w1_netlink_cmd cmd = W1_CMD_SEARCH or W1_CMD_ALARM_SEARCH] + +reply: + [cn_msg, ack = 1 and increasing, 0 means the last message, seq is equal to the request seq] + [w1_netlink_msg type = W1_MASTER_CMD] + [w1_netlink_cmd cmd = W1_CMD_SEARCH or W1_CMD_ALARM_SEARCH + len is equal to number of IDs multiplied by 8] + [64bit-id0 ... 64bit-idN] +Length in each header corresponds to the size of the data behind it, so +w1_netlink_cmd->len = N * 8; where N is number of IDs in this message. Can be zero. +w1_netlink_msg->len = sizeof(struct w1_netlink_cmd) + N * 8; +cn_msg->len = sizeof(struct w1_netlink_msg) + sizeof(struct w1_netlink_cmd) + N*8; Operation steps in w1 core when new command is received. ======================================================= -- 1.5.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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