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