yes , my host is windows ,guest is linux ?? i want to transfer data between
guest and host , and i use code blow ??the same if guest is windows and in
windows driver is work ok , but ,why can't use it in linux driver the same way
??
int vpaudio_call_hgcm(struct minivosc_device *mydev,struct hgcm_call_struct
*param)
{
int rc = VINF_SUCCESS;
RM_HGCM_CALL_REQUEST_SINGLE sinreq ={0};
RM_HGCM_CALL_REQUEST_DUAL dualreq ={0};
if (param->function_code == HGCM_FN_DUAL_BUFFER_REQUEST)
{
dualreq.InParam.type = VMMDevHGCMParmType_LinAddr_In;
dualreq.OutParam.type = VMMDevHGCMParmType_LinAddr_Out;
dualreq.callinfo.u32Function = HGCM_FN_DUAL_BUFFER_REQUEST;
dualreq.callinfo.u32ClientID = mydev->ulClientID;
dualreq.callinfo.cParms = 2;
dualreq.InParam.u.Pointer.u.linearAddr = (RTGCPTR32)param->in_data;
dualreq.InParam.u.Pointer.size = param->in_size;
dualreq.OutParam.u.Pointer.u.linearAddr = (RTGCPTR32)param->out_data;
dualreq.OutParam.u.Pointer.size = param->out_size;
return vPVbglHGCMCall (mydev->handle,&dualreq.callinfo,sizeof(dualreq));
}
switch (param->function_code)
{
case HGCM_FN_OUT_REQUEST:
sinreq.Param.type = VMMDevHGCMParmType_LinAddr_Out;
sinreq.Param.u.Pointer.u.linearAddr = (RTGCPTR32)param->out_data;
sinreq.Param.u.Pointer.size = param->out_size;
break;
case HGCM_FN_IN_REQUEST:
sinreq.Param.type = VMMDevHGCMParmType_LinAddr_In;
sinreq.Param.u.Pointer.u.linearAddr = (RTGCPTR32)param->in_data;
sinreq.Param.u.Pointer.size = param->in_size;
break;
default:
sinreq.Param.type = VMMDevHGCMParmType_LinAddr;
sinreq.Param.u.Pointer.u.linearAddr = (RTGCPTR32)param->in_data;
sinreq.Param.u.Pointer.size = param->in_size;
}
sinreq.callinfo.u32Function = param->function_code;
sinreq.callinfo.u32ClientID = mydev->ulClientID;
sinreq.callinfo.cParms = 1;
rc = vPVbglHGCMCall (mydev->handle,&sinreq.callinfo,sizeof(sinreq));
if (RT_SUCCESS (rc)){
rc = sinreq.callinfo.result;
}
return rc;
}
------------------ Original ------------------
From: "vbox-dev-request";
Date: 2013??7??28??(??????) ????3:00
To: "vbox-dev";
Subject: vbox-dev Digest, Vol 81, Issue 26
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Message: 1
Date: Sat, 27 Jul 2013 14:11:57 +0800
From: " ?? " <[email protected]>
Subject: [vbox-dev] about hgcm in linux
To: " vbox-dev " <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset="gb18030"
Hi, i have a problem ? in windows ?i can send data to host in guest by use hgcm
in drivers ? but ,in linux ,i can't use it in the same way ? why ?
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