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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* ISHTP firmware loader header
*
* Copyright (c) 2024, Intel Corporation.
*/
#ifndef _ISHTP_LOADER_H_
#define _ISHTP_LOADER_H_
#include <linux/bits.h>
#include <linux/jiffies.h>
#include <linux/types.h>
#include "ishtp-dev.h"
struct work_struct;
#define LOADER_MSG_SIZE \
(IPC_PAYLOAD_SIZE - sizeof(struct ishtp_msg_hdr))
/*
* ISHTP firmware loader protocol definition
*/
#define LOADER_CMD_XFER_QUERY 0 /* SW -> FW */
#define LOADER_CMD_XFER_FRAGMENT 1 /* SW -> FW */
#define LOADER_CMD_START 2 /* SW -> FW */
/* Only support DMA mode */
#define LOADER_XFER_MODE_DMA BIT(0)
/**
* union loader_msg_header - ISHTP firmware loader message header
* @command: Command type
* @is_response: Indicates if the message is a response
* @has_next: Indicates if there is a next message
* @reserved: Reserved for future use
* @status: Status of the message
* @val32: entire header as a 32-bit value
*/
union loader_msg_header {
struct {
__u32 command:7;
__u32 is_response:1;
__u32 has_next:1;
__u32 reserved:15;
__u32 status:8;
};
__u32 val32;
};
/**
* struct loader_xfer_query - ISHTP firmware loader transfer query packet
* @header: Header of the message
* @image_size: Size of the image
*/
struct loader_xfer_query {
__le32 header;
__le32 image_size;
};
/**
* struct loader_version - ISHTP firmware loader version
* @value: Value of the version
* @major: Major version
* @minor: Minor version
* @hotfix: Hotfix version
* @build: Build version
*/
struct loader_version {
union {
__le32 value;
struct {
__u8 major;
__u8 minor;
__u8 hotfix;
__u8 build;
};
};
};
/**
* struct loader_capability - ISHTP firmware loader capability
* @max_fw_image_size: Maximum firmware image size
* @support_mode: Support mode
* @reserved: Reserved for future use
* @platform: Platform
* @max_dma_buf_size: Maximum DMA buffer size, multiples of 4096
*/
struct loader_capability {
__le32 max_fw_image_size;
__le16 support_mode;
__u8 reserved;
__u8 platform;
__le32 max_dma_buf_size;
};
/**
* struct loader_xfer_query_ack - ISHTP firmware loader transfer query acknowledgment
* @header: Header of the message
* @version_major: ISH Major version
* @version_minor: ISH Minor version
* @version_hotfix: ISH Hotfix version
* @version_build: ISH Build version
* @protocol_version: Protocol version
* @loader_version: Loader version
* @capability: Loader capability
*/
struct loader_xfer_query_ack {
__le32 header;
__le16 version_major;
__le16 version_minor;
__le16 version_hotfix;
__le16 version_build;
__le32 protocol_version;
struct loader_version loader_version;
struct loader_capability capability;
};
/**
* struct loader_xfer_fragment - ISHTP firmware loader transfer fragment
* @header: Header of the message
* @xfer_mode: Transfer mode
* @offset: Offset
* @size: Size
* @is_last: Is last
*/
struct loader_xfer_fragment {
__le32 header;
__le32 xfer_mode;
__le32 offset;
__le32 size;
__le32 is_last;
};
/**
* struct loader_xfer_fragment_ack - ISHTP firmware loader transfer fragment acknowledgment
* @header: Header of the message
*/
struct loader_xfer_fragment_ack {
__le32 header;
};
/**
* struct fragment_dscrpt - ISHTP firmware loader fragment descriptor
* @ddr_adrs: The address in host DDR
* @fw_off: The offset of the fragment in the fw image
* @length: The length of the fragment
*/
struct fragment_dscrpt {
__le64 ddr_adrs;
__le32 fw_off;
__le32 length;
};
#define FRAGMENT_MAX_NUM \
((LOADER_MSG_SIZE - sizeof(struct loader_xfer_dma_fragment)) / \
sizeof(struct fragment_dscrpt))
/**
* struct loader_xfer_dma_fragment - ISHTP firmware loader transfer DMA fragment
* @fragment: Fragment
* @fragment_cnt: How many descriptors in the fragment_tbl
* @fragment_tbl: Fragment table
*/
struct loader_xfer_dma_fragment {
struct loader_xfer_fragment fragment;
__le32 fragment_cnt;
struct fragment_dscrpt fragment_tbl[] __counted_by(fragment_cnt);
};
/**
* struct loader_start - ISHTP firmware loader start
* @header: Header of the message
*/
struct loader_start {
__le32 header;
};
/**
* struct loader_start_ack - ISHTP firmware loader start acknowledgment
* @header: Header of the message
*/
struct loader_start_ack {
__le32 header;
};
union loader_recv_message {
__le32 header;
struct loader_xfer_query_ack query_ack;
struct loader_xfer_fragment_ack fragment_ack;
struct loader_start_ack start_ack;
__u8 raw_data[LOADER_MSG_SIZE];
};
/*
* ISHTP firmware loader internal use
*/
/* ISHTP firmware loader command timeout */
#define ISHTP_LOADER_TIMEOUT msecs_to_jiffies(100)
/* ISHTP firmware loader retry times */
#define ISHTP_LOADER_RETRY_TIMES 3
/**
* struct ish_firmware_variant - ISH firmware variant
* @device: PCI Device ID
* @filename: The firmware file name
*/
struct ish_firmware_variant {
unsigned short device;
const char *filename;
};
/*
* ISHTP firmware loader API for ISHTP hbm
*/
/* ISHTP capability bit for firmware loader */
#define ISHTP_SUPPORT_CAP_LOADER BIT(4)
/* Firmware loader address */
#define ISHTP_LOADER_CLIENT_ADDR 16
/**
* ishtp_loader_work - The work function to start the firmware loading process
* @work: The work structure
*/
void ishtp_loader_work(struct work_struct *work);
#endif /* _ISHTP_LOADER_H_ */
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