3a0d392d6f
added msgq send and receive implementation Change-Id: Ib1585096d1d9b48e4c245263e4d68702011b4d0c Signed-off-by: Yu SI <quic_ysi@quicinc.com>
78 lines
1.9 KiB
C
78 lines
1.9 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 _CVP_VM_MSGQ_H_
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#define _CVP_VM_MSGQ_H_
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#include <linux/types.h>
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#include <linux/gunyah/gh_msgq.h>
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#include <linux/gunyah/gh_rm_drv.h>
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#include "cvp_comm_def.h"
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#define MAX_CVP_IPC_LEN 16
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#define CVP_VM_RESPONSE_TIMEOUT 300
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#define CVP_IPC_MSG_TYPE_DIR_CHECK 0x10000000 /* direction check */
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#define CVP_IPC_MSG_TYPE_ACT_CHECK 0x00000011 /* action check */
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enum CVP_IPC_MSG_TYPE {
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REQUEST_SESS_CTRL = 1,
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RELEASE_SESS_CTRL = 2,
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REQUEST_EVA_RESET = 3,
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RECLAIM_SESS_CTRL = 4, /* Only PVM can reclaim sesession control */
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CVP_MAX_IPC_CMD = 5,
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};
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struct cvp_ipc_msg {
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/* type format:
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* bit 31: 0->Initiated command; 1->Response to remote command
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* bit 2~0: CVP_IPC_MSG_TYPE
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*/
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uint32_t type;
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uint32_t ver;
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uint32_t len;
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uint32_t resv;
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uint32_t data[MAX_CVP_IPC_LEN];
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};
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struct cvp_gh_msgq_config {
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int peer_id;
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int label;
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void *handle;
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struct notifier_block rm_nb;
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};
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struct cvp_msgq_ops;
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struct cvp_msgq_drv {
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struct mutex ipc_lock; /* Mutex for sending MSG */
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struct cvp_gh_msgq_config config;
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struct task_struct *receiver_thread;
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struct completion completions[CVP_MAX_IPC_CMD + 1];
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/*
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* pending_local_cmd: the command is being processed locally.
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* The command is a request sent from remote VM
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*/
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struct cvp_ipc_msg pending_local_cmd;
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/*
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* pending_remote_rsp: the command is being processing remotely.
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* The command is a request sent by local VM
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*/
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struct cvp_ipc_msg pending_remote_rsp;
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struct cvp_msgq_ops *ops;
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};
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struct cvp_msgq_ops {
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int (*msgq_init)(struct cvp_msgq_drv *msgq_drv);
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int (*msgq_send)(struct cvp_msgq_drv *msgq_drv, void *msg,
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size_t msg_size);
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int (*msgq_receive)(struct cvp_msgq_drv *msgq_drv);
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int (*msgq_deinit)(struct cvp_msgq_drv *msgq_drv);
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};
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extern struct cvp_msgq_drv cvp_ipc_msgq;
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#endif
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