157 lines
4.3 KiB
C
157 lines
4.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
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/*
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* Copyright (C) 2005-2014 Intel Corporation
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* Copyright (C) 2013-2015 Intel Mobile Communications GmbH
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* Copyright (C) 2016-2017 Intel Deutschland GmbH
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*/
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#ifndef __iwl_fw_api_cmdhdr_h__
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#define __iwl_fw_api_cmdhdr_h__
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/**
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* DOC: Host command section
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*
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* A host command is a command issued by the upper layer to the fw. There are
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* several versions of fw that have several APIs. The transport layer is
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* completely agnostic to these differences.
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* The transport does provide helper functionality (i.e. SYNC / ASYNC mode),
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*/
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#define SEQ_TO_QUEUE(s) (((s) >> 8) & 0x1f)
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#define QUEUE_TO_SEQ(q) (((q) & 0x1f) << 8)
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#define SEQ_TO_INDEX(s) ((s) & 0xff)
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#define INDEX_TO_SEQ(i) ((i) & 0xff)
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#define SEQ_RX_FRAME cpu_to_le16(0x8000)
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/*
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* those functions retrieve specific information from
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* the id field in the iwl_host_cmd struct which contains
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* the command id, the group id and the version of the command
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* and vice versa
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*/
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static inline u8 iwl_cmd_opcode(u32 cmdid)
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{
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return cmdid & 0xFF;
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}
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static inline u8 iwl_cmd_groupid(u32 cmdid)
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{
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return ((cmdid & 0xFF00) >> 8);
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}
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static inline u8 iwl_cmd_version(u32 cmdid)
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{
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return ((cmdid & 0xFF0000) >> 16);
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}
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static inline u32 iwl_cmd_id(u8 opcode, u8 groupid, u8 version)
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{
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return opcode + (groupid << 8) + (version << 16);
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}
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/* make u16 wide id out of u8 group and opcode */
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#define WIDE_ID(grp, opcode) (((grp) << 8) | (opcode))
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#define DEF_ID(opcode) ((1 << 8) | (opcode))
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/* due to the conversion, this group is special; new groups
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* should be defined in the appropriate fw-api header files
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*/
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#define IWL_ALWAYS_LONG_GROUP 1
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/**
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* struct iwl_cmd_header - (short) command header format
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*
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* This header format appears in the beginning of each command sent from the
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* driver, and each response/notification received from uCode.
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*/
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struct iwl_cmd_header {
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/**
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* @cmd: Command ID: REPLY_RXON, etc.
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*/
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u8 cmd;
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/**
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* @group_id: group ID, for commands with groups
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*/
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u8 group_id;
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/**
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* @sequence:
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* Sequence number for the command.
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*
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* The driver sets up the sequence number to values of its choosing.
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* uCode does not use this value, but passes it back to the driver
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* when sending the response to each driver-originated command, so
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* the driver can match the response to the command. Since the values
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* don't get used by uCode, the driver may set up an arbitrary format.
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*
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* There is one exception: uCode sets bit 15 when it originates
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* the response/notification, i.e. when the response/notification
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* is not a direct response to a command sent by the driver. For
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* example, uCode issues REPLY_RX when it sends a received frame
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* to the driver; it is not a direct response to any driver command.
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*
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* The Linux driver uses the following format:
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*
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* 0:7 tfd index - position within TX queue
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* 8:12 TX queue id
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* 13:14 reserved
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* 15 unsolicited RX or uCode-originated notification
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*/
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__le16 sequence;
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} __packed;
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/**
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* struct iwl_cmd_header_wide
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*
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* This header format appears in the beginning of each command sent from the
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* driver, and each response/notification received from uCode.
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* this is the wide version that contains more information about the command
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* like length, version and command type
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*
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* @cmd: command ID, like in &struct iwl_cmd_header
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* @group_id: group ID, like in &struct iwl_cmd_header
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* @sequence: sequence, like in &struct iwl_cmd_header
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* @length: length of the command
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* @reserved: reserved
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* @version: command version
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*/
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struct iwl_cmd_header_wide {
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u8 cmd;
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u8 group_id;
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__le16 sequence;
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__le16 length;
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u8 reserved;
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u8 version;
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} __packed;
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/**
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* struct iwl_calib_res_notif_phy_db - Receive phy db chunk after calibrations
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* @type: type of the result - mostly ignored
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* @length: length of the data
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* @data: data, length in @length
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*/
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struct iwl_calib_res_notif_phy_db {
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__le16 type;
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__le16 length;
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u8 data[];
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} __packed;
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/**
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* struct iwl_phy_db_cmd - configure operational ucode
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* @type: type of the data
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* @length: length of the data
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* @data: data, length in @length
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*/
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struct iwl_phy_db_cmd {
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__le16 type;
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__le16 length;
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u8 data[];
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} __packed;
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/**
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* struct iwl_cmd_response - generic response struct for most commands
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* @status: status of the command asked, changes for each one
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*/
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struct iwl_cmd_response {
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__le32 status;
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};
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#endif /* __iwl_fw_api_cmdhdr_h__ */
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