/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2014-2021 Intel Corporation
*/
#ifndef _ABI_GUC_MESSAGES_ABI_H
#define _ABI_GUC_MESSAGES_ABI_H
/**
* DOC: HXG Message
*
* All messages exchanged with GuC are defined using 32 bit dwords.
* First dword is treated as a message header. Remaining dwords are optional.
*
* +---+-------+--------------------------------------------------------------+
* | | Bits | Description |
* +===+=======+==============================================================+
* | | | |
* | 0 | 31 | **ORIGIN** - originator of the message |
* | | | - _`GUC_HXG_ORIGIN_HOST` = 0 |
* | | | - _`GUC_HXG_ORIGIN_GUC` = 1 |
* | | | |
* | +-------+--------------------------------------------------------------+
* | | 30:28 | **TYPE** - message type |
* | | | - _`GUC_HXG_TYPE_REQUEST` = 0 |
* | | | - _`GUC_HXG_TYPE_EVENT` = 1 |
* | | | - _`GUC_HXG_TYPE_FAST_REQUEST` = 2 |
* | | | - _`GUC_HXG_TYPE_NO_RESPONSE_BUSY` = 3 |
* | | | - _`GUC_HXG_TYPE_NO_RESPONSE_RETRY` = 5 |
* | | | - _`GUC_HXG_TYPE_RESPONSE_FAILURE` = 6 |
* | | | - _`GUC_HXG_TYPE_RESPONSE_SUCCESS` = 7 |
* | +-------+--------------------------------------------------------------+
* | | 27:0 | **AUX** - auxiliary data (depends on TYPE) |
* +---+-------+--------------------------------------------------------------+
* | 1 | 31:0 | |
* +---+-------+ |
* |...| | **PAYLOAD** - optional payload (depends on TYPE) |
* +---+-------+ |
* | n | 31:0 | |
* +---+-------+--------------------------------------------------------------+
*/
#define GUC_HXG_MSG_MIN_LEN 1u
#define GUC_HXG_MSG_0_ORIGIN (0x1U << 31)
#define GUC_HXG_ORIGIN_HOST 0u
#define GUC_HXG_ORIGIN_GUC 1u
#define GUC_HXG_MSG_0_TYPE (0x7 << 28)
#define GUC_HXG_TYPE_REQUEST 0u
#define GUC_HXG_TYPE_EVENT 1u
#define GUC_HXG_TYPE_FAST_REQUEST 2u
#define GUC_HXG_TYPE_NO_RESPONSE_BUSY 3u
#define GUC_HXG_TYPE_NO_RESPONSE_RETRY 5u
#define GUC_HXG_TYPE_RESPONSE_FAILURE 6u
#define GUC_HXG_TYPE_RESPONSE_SUCCESS 7u
#define GUC_HXG_MSG_0_AUX (0xfffffff << 0)
#define GUC_HXG_MSG_n_PAYLOAD (0xffffffff << 0)
/**
* DOC: HXG Request
*
* The `HXG Request`_ message should be used to initiate synchronous activity
* for which confirmation or return data is expected.
*
* The recipient of this message shall use `HXG Response`_, `HXG Failure`_
* or `HXG Retry`_ message as a definite reply, and may use `HXG Busy`_
* message as a intermediate reply.
*
* Format of @DATA0 and all @DATAn fields depends on the @ACTION code.
*
* +---+-------+--------------------------------------------------------------+
* | | Bits | Description |
* +===+=======+==============================================================+
* | 0 | 31 | ORIGIN |
* | +-------+--------------------------------------------------------------+
* | | 30:28 | TYPE = GUC_HXG_TYPE_REQUEST_ |
* | +-------+--------------------------------------------------------------+
* | | 27:16 | **DATA0** - request data (depends on ACTION) |
* | +-------+--------------------------------------------------------------+
* | | 15:0 | **ACTION** - requested action code |
* +---+-------+--------------------------------------------------------------+
* | 1 | 31:0 | |
* +---+-------+ |
* |...| | **DATAn** - optional data (depends on ACTION) |
* +---+-------+ |
* | n | 31:0 | |
* +---+-------+--------------------------------------------------------------+
*/
#define GUC_HXG_REQUEST_MSG_MIN_LEN GUC_HXG_MSG_MIN_LEN
#define GUC_HXG_REQUEST_MSG_0_DATA0 (0xfff << 16)
#define GUC_HXG_REQUEST_MSG_0_ACTION (0xffff << 0)
#define GUC_HXG_REQUEST_MSG_n_DATAn GUC_HXG_MSG_n_PAYLOAD
/**
* DOC: HXG Fast Request
*
* The `HXG Request`_ message should be used to initiate asynchronous activity
* for which confirmation or return data is not expected.
*
* If confirmation is required then `HXG Request`_ shall be used instead.
*
* The recipient of this message may only use `HXG Failure`_ message if it was
* unable to accept this request (like invalid data).
*
* Format of `HXG Fast Request`_ message is same as `HXG Request`_ except @TYPE.
*
* +---+-------+--------------------------------------------------------------+
* | | Bits | Description |
* +===+=======+==============================================================+
* | 0 | 31 | ORIGIN - see `HXG Message`_ |
* | +-------+--------------------------------------------------------------+
* | | 30:28 | TYPE = `GUC_HXG_TYPE_FAST_REQUEST`_ |
* | +-------+--------------------------------------------------------------+
* | | 27:16 | DATA0 - see `HXG Request`_ |
* | +-------+--------------------------------------------------------------+
* | | 15:0 | ACTION - see `HXG Request`_ |
* +---+-------+--------------------------------------------------------------+
* |...| | DATAn - see `HXG Request`_ |
* +---+-------+--------------------------------------------------------------+
*/
/**
* DOC: HXG Event
*
* The `HXG Event`_ message should be used to initiate asynchronous activity
* that does not involves immediate confirmation nor data.
*
* Format of @DATA0 and all @DATAn fields depends on the @ACTION code.
*
* +---+-------+--------------------------------------------------------------+
* | | Bits | Description |
* +===+=======+==============================================================+
* | 0 | 31 | ORIGIN |
* | +-------+--------------------------------------------------------------+
* | | 30:28 | TYPE = GUC_HXG_TYPE_EVENT_ |
* | +-------+--------------------------------------------------------------+
* | | 27:16 | **DATA0** - event data (depends on ACTION) |
* | +-------+--------------------------------------------------------------+
* | | 15:0 | **ACTION** - event action code |
* +---+-------+--------------------------------------------------------------+
* | 1 | 31:0 | |
* +---+-------+ |
* |...| | **DATAn** - optional event data (depends on ACTION) |
* +---+-------+ |
* | n | 31:0 | |
* +---+-------+--------------------------------------------------------------+
*/
#define GUC_HXG_EVENT_MSG_MIN_LEN GUC_HXG_MSG_MIN_LEN
#define GUC_HXG_EVENT_MSG_0_DATA0 (0xfff << 16)
#define GUC_HXG_EVENT_MSG_0_ACTION (0xffff << 0)
#define GUC_HXG_EVENT_MSG_n_DATAn GUC_HXG_MSG_n_PAYLOAD
/**
* DOC: HXG Busy
*
* The `HXG Busy`_ message may be used to acknowledge reception of the `HXG Request`_
* message if the recipient expects that it processing will be longer than default
* timeout.
*
* The @COUNTER field may be used as a progress indicator.
*
* +---+-------+--------------------------------------------------------------+
* | | Bits | Description |
* +===+=======+==============================================================+
* | 0 | 31 | ORIGIN |
* | +-------+--------------------------------------------------------------+
* | | 30:28 | TYPE = GUC_HXG_TYPE_NO_RESPONSE_BUSY_ |
* | +-------+--------------------------------------------------------------+
* | | 27:0 | **COUNTER** - progress indicator |
* +---+-------+--------------------------------------------------------------+
*/
#define GUC_HXG_BUSY_MSG_LEN GUC_HXG_MSG_MIN_LEN
#define GUC_HXG_BUSY_MSG_0_COUNTER GUC_HXG_MSG_0_AUX
/**
* DOC: HXG Retry
*
* The `HXG Retry`_ message should be used by recipient to indicate that the
* `HXG Request`_ message was dropped and it should be resent again.
*
* The @REASON field may be used to provide additional information.
*
* +---+-------+--------------------------------------------------------------+
* | | Bits | Description |
* +===+=======+==============================================================+
* | 0 | 31 | ORIGIN |
* | +-------+--------------------------------------------------------------+
* | | 30:28 | TYPE = GUC_HXG_TYPE_NO_RESPONSE_RETRY_ |
* | +-------+--------------------------------------------------------------+
* | | 27:0 | **REASON** - reason for retry |
* | | | - _`GUC_HXG_RETRY_REASON_UNSPECIFIED` = 0 |
* +---+-------+--------------------------------------------------------------+
*/
#define GUC_HXG_RETRY_MSG_LEN GUC_HXG_MSG_MIN_LEN
#define GUC_HXG_RETRY_MSG_0_REASON GUC_HXG_MSG_0_AUX
#define GUC_HXG_RETRY_REASON_UNSPECIFIED 0u
/**
* DOC: HXG Failure
*
* The `HXG Failure`_ message shall be used as a reply to the `HXG Request`_
* message that could not be processed due to an error.
*
* +---+-------+--------------------------------------------------------------+
* | | Bits | Description |
* +===+=======+==============================================================+
* | 0 | 31 | ORIGIN |
* | +-------+--------------------------------------------------------------+
* | | 30:28 | TYPE = GUC_HXG_TYPE_RESPONSE_FAILURE_ |
* | +-------+--------------------------------------------------------------+
* | | 27:16 | **HINT** - additional error hint |
* | +-------+--------------------------------------------------------------+
* | | 15:0 | **ERROR** - error/result code |
* +---+-------+--------------------------------------------------------------+
*/
#define GUC_HXG_FAILURE_MSG_LEN GUC_HXG_MSG_MIN_LEN
#define GUC_HXG_FAILURE_MSG_0_HINT (0xfff << 16)
#define GUC_HXG_FAILURE_MSG_0_ERROR (0xffff << 0)
/**
* DOC: HXG Response
*
* The `HXG Response`_ message shall be used as a reply to the `HXG Request`_
* message that was successfully processed without an error.
*
* +---+-------+--------------------------------------------------------------+
* | | Bits | Description |
* +===+=======+==============================================================+
* | 0 | 31 | ORIGIN |
* | +-------+--------------------------------------------------------------+
* | | 30:28 | TYPE = GUC_HXG_TYPE_RESPONSE_SUCCESS_ |
* | +-------+--------------------------------------------------------------+
* | | 27:0 | **DATA0** - data (depends on ACTION from `HXG Request`_) |
* +---+-------+--------------------------------------------------------------+
* | 1 | 31:0 | |
* +---+-------+ |
* |...| | **DATAn** - data (depends on ACTION from `HXG Request`_) |
* +---+-------+ |
* | n | 31:0 | |
* +---+-------+--------------------------------------------------------------+
*/
#define GUC_HXG_RESPONSE_MSG_MIN_LEN GUC_HXG_MSG_MIN_LEN
#define GUC_HXG_RESPONSE_MSG_0_DATA0 GUC_HXG_MSG_0_AUX
#define GUC_HXG_RESPONSE_MSG_n_DATAn GUC_HXG_MSG_n_PAYLOAD
/* deprecated */
#define INTEL_GUC_MSG_TYPE_SHIFT 28
#define INTEL_GUC_MSG_TYPE_MASK (0xF << INTEL_GUC_MSG_TYPE_SHIFT)
#define INTEL_GUC_MSG_DATA_SHIFT 16
#define INTEL_GUC_MSG_DATA_MASK (0xFFF << INTEL_GUC_MSG_DATA_SHIFT)
#define INTEL_GUC_MSG_CODE_SHIFT 0
#define INTEL_GUC_MSG_CODE_MASK (0xFFFF << INTEL_GUC_MSG_CODE_SHIFT)
enum intel_guc_msg_type {
INTEL_GUC_MSG_TYPE_REQUEST = 0x0,
INTEL_GUC_MSG_TYPE_RESPONSE = 0xF,
};
#endif /* _ABI_GUC_MESSAGES_ABI_H */
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