e84a7d930f
Add para virtualization backend. Change-Id: Ifa25e422c04ef4dafb152130f303d0a217429c32 Signed-off-by: Mark Bao <quic_mbao@quicinc.com>
100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#ifndef __MMRM_VM_MSGQ_H__
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#define __MMRM_VM_MSGQ_H__
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#include <linux/gunyah/gh_msgq.h>
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#define MMRM_VM_VER_1 1 // mmrm version, for message valid check
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#define MMRM_VM_MAX_PKT_SZ 1024 // mmrm max gunyah packet size
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/* mmrm_vm_pkt_type: mmrm transfer type, for message valid check
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* @MMRM_VM_TYPE_DATA: request/response data
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*/
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enum mmrm_vm_pkt_type {
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MMRM_VM_TYPE_DATA = 1,
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};
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struct mmrm_vm_driver_data;
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/**
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* struct mmrm_vm_msg_hdr - mmrm vm packet header
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* @version: protocol version
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* @type: packet type; one of MMRM_VM_TYPE_* in mmrm_vm_pkt_type
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* @flags: Reserved for future use
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* @size: length of packet, excluding this header
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*/
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struct mmrm_vm_msg_hdr {
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u8 version;
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u8 type;
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u8 flags;
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u8 resv;
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u32 size;
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};
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/**
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* mmrm_vm_msg - message that be received.
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* @link - list head
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* @msg_size - message size
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* @msg_buf - message buffer
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*/
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struct mmrm_vm_msg {
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struct list_head link;
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size_t msg_size;
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unsigned char msg_buf[GH_MSGQ_MAX_MSG_SIZE_BYTES];
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};
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/**
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* mmrm_vm_msgq_info - gunyah info.
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* @peer_id: notification callback check if message is from SVM
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* @msgq_handle - registered msg queue handle with gunyah api
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* @msgq_label - message queue label
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* @pvt_nb - notifier info
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*/
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struct mmrm_vm_gh_msgq_info {
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int peer_id;
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void *msgq_handle;
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int msgq_label;
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struct notifier_block pvt_nb;
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};
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/**
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* struct mmrm_vm_msg_q -- svm mmrm API caller queue that wait for mmrm API return
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* @link: list head
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* @m_req: request message pointer
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* @m_resp: response message buffer pointer
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* @complete: sync mmrm API response and caller
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*/
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struct mmrm_vm_msg_q {
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struct list_head link;
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struct mmrm_vm_request_msg_pkt *m_req;
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struct mmrm_vm_response_msg_pkt *m_resp;
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struct completion complete;
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};
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/**
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* mmrm_vm_msgq_init - initialize display message queue: both TX and RX
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* @mmrm_vm - handle to mmrm_vm_data_priv
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*/
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int mmrm_vm_msgq_init(struct mmrm_vm_driver_data *mmrm_vm);
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/**
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* mmrm_vm_msgq_deinit - deinitialize display message queue: both TX and RX
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* @mmrm_vm - handle to mmrm_vm_data_priv
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*/
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int mmrm_vm_msgq_deinit(struct mmrm_vm_driver_data *mmrm_vm);
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/**
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* mmrm_vm_msgq_send - send custom messages across VM's
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* @mmrm_vm - handle to mmrm_vm_data_priv
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* @msg - payload data
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* @msg_size - size of the payload_data
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*/
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int mmrm_vm_msgq_send(struct mmrm_vm_driver_data *mmrm_vm, void *msg, size_t msg_size);
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#endif // __MMRM_VM_MSGQ_H__
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