4b658ee6ce
Add the full drivers for the PVM and TVM. Change-Id: I3046306fff91670928c750ffa31db02bd0240c9c Signed-off-by: Chris Goldsworthy <quic_cgoldswo@quicinc.com>
108 linhas
2.9 KiB
C
108 linhas
2.9 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 SMMU_PROXY_MSGQ_H
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#define SMMU_PROXY_MSGQ_H
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#include <linux/gunyah/gh_rm_drv.h>
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/**
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* enum smmu_proxy_msg_type: Message types used by the SMMU proxy driver for
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* communication.
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* @SMMU_PROXY_MAP: The message is a request to map memory into the VM's
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* SMMU.
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* @SMMU_PROXY_MAP_RESP: The message is a response from a remote VM to a
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* mapping request issued by the receiving VM
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* @SMMU_PROXY_UNMAP: The message is a request to unmap some previously
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* SMMU-mapped memory from the VM
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* @SMMU_PROXY_UNMAP_RESP: The message is a response from a remote VM to an
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* unmapping request issued by the receiving VM
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* @SMMU_PROXY_ERR_RESP: The message is a response from a remote VM to give
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* a generic error response for a prior message sent to the remote VM
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*/
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enum smmu_proxy_msg_type {
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SMMU_PROXY_MAP,
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SMMU_PROXY_MAP_RESP,
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SMMU_PROXY_UNMAP,
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SMMU_PROXY_UNMAP_RESP,
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SMMU_PROXY_ERR_RESP,
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SMMU_PROXY_MSG_MAX,
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};
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/**
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* struct smmu_proxy_msg_hdr: The header for SMMU proxy messages
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* @msg_type: The type of message.
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* @msg_size: The size of message.
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*/
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struct smmu_proxy_msg_hdr {
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u32 msg_type;
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u32 msg_size;
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} __packed;
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/**
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* struct smmu_proxy_msg_hdr: The header for responses to SMMU proxy messages
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* @msg_type: The type of message.
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* @msg_size: The size of message.
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* @ret: Return code from remote VM
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*/
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struct smmu_proxy_resp_hdr {
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u32 msg_type;
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u32 msg_size;
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s32 ret;
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} __packed;
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/**
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* struct smmu_proxy_map_req: The message format for an SMMU mapping request from
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* another VM.
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* @hdr: Message header
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* @hdl: The memparcel handle associated with the memory to be mapped in the SMMU
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* of the relevant VM
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* @cb_id: Context bank ID that we will map the memory associated with @hdl to
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* @acl_desc: A GH ACL descriptor that describes the VMIDs that will be
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* accessing the memory, as well as what permissions each VMID will have.
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*/
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struct smmu_proxy_map_req {
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struct smmu_proxy_msg_hdr hdr;
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u32 hdl;
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u32 cb_id;
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struct gh_acl_desc acl_desc;
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} __packed;
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/**
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* struct smmu_proxy_map_resp: The message format for an SMMU mapping
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* request response.
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* @hdr: Response header
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* @iova: IOVA of mapped memory
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* @mapping_len: Lenth of IOMMU IOVA mapping
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*/
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struct smmu_proxy_map_resp {
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struct smmu_proxy_resp_hdr hdr;
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u64 iova;
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u64 mapping_len;
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} __packed;
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/**
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* struct smmu_proxy_unmap_req: The message format for an SMMU unmapping request from
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* another VM.
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* @hdr: Message header
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* @hdl: The memparcel handle associated with the memory to be mapped in the SMMU
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* of the relevant VM
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*/
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struct smmu_proxy_unmap_req {
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struct smmu_proxy_msg_hdr hdr;
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u32 hdl;
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} __packed;
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/**
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* struct smmu_proxy_unmap_resp: The message format for an SMMU unmapping
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* request response.
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* @hdr: Response header
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*/
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struct smmu_proxy_unmap_resp {
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struct smmu_proxy_resp_hdr hdr;
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} __packed;
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#endif /* SMMU_PROXY_MSGQ_H */
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