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/*********************************************************
* Copyright (C) 1999 VMware, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation version 2.1 and no later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the Lesser GNU General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*********************************************************/
/*********************************************************
* The contents of this file are subject to the terms of the Common
* Development and Distribution License (the "License") version 1.0
* and no later version. You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the License at
* http://www.opensource.org/licenses/cddl1.php
*
* See the License for the specific language governing permissions
* and limitations under the License.
*
*********************************************************/
/*
* backdoor.c --
*
* First layer of the internal communication channel between guest
* applications and vmware
*
* This is the backdoor. By using special ports of the virtual I/O space,
* and the virtual CPU registers, a guest application can send a
* synchroneous basic request to vmware, and vmware can reply to it.
*/
#ifdef __cplusplus
extern "C" {
#endif
#include "backdoor_def.h"
#include "backdoor.h"
#include "backdoorInt.h"
#if defined(BACKDOOR_DEBUG) && defined(USERLEVEL)
#if defined(__KERNEL__) || defined(_KERNEL)
#else
# include "debug.h"
#endif
# include <stdio.h>
# define BACKDOOR_LOG(args) Debug args
# define BACKDOOR_LOG_PROTO_STRUCT(x) BackdoorPrintProtoStruct((x))
# define BACKDOOR_LOG_HB_PROTO_STRUCT(x) BackdoorPrintHbProtoStruct((x))
/*
*----------------------------------------------------------------------------
*
* BackdoorPrintProtoStruct --
* BackdoorPrintHbProtoStruct --
*
* Print the contents of the specified backdoor protocol structure via
* printf.
*
* Results:
* None.
*
* Side effects:
* Output to stdout.
*
*----------------------------------------------------------------------------
*/
void
BackdoorPrintProtoStruct(Backdoor_proto *myBp)
{
Debug("magic 0x%08x, command %d, size %"FMTSZ"u, port %d\n",
myBp->in.ax.word, myBp->in.cx.halfs.low,
myBp->in.size, myBp->in.dx.halfs.low);
#ifndef VM_X86_64
Debug("ax %#x, "
"bx %#x, "
"cx %#x, "
"dx %#x, "
"si %#x, "
"di %#x\n",
myBp->out.ax.word,
myBp->out.bx.word,
myBp->out.cx.word,
myBp->out.dx.word,
myBp->out.si.word,
myBp->out.di.word);
#else
Debug("ax %#"FMT64"x, "
"bx %#"FMT64"x, "
"cx %#"FMT64"x, "
"dx %#"FMT64"x, "
"si %#"FMT64"x, "
"di %#"FMT64"x\n",
myBp->out.ax.quad,
myBp->out.bx.quad,
myBp->out.cx.quad,
myBp->out.dx.quad,
myBp->out.si.quad,
myBp->out.di.quad);
#endif
}
void
BackdoorPrintHbProtoStruct(Backdoor_proto_hb *myBp)
{
Debug("magic 0x%08x, command %d, size %"FMTSZ"u, port %d, "
"srcAddr %"FMTSZ"u, dstAddr %"FMTSZ"u\n",
myBp->in.ax.word, myBp->in.bx.halfs.low, myBp->in.size,
myBp->in.dx.halfs.low, myBp->in.srcAddr, myBp->in.dstAddr);
#ifndef VM_X86_64
Debug("ax %#x, "
"bx %#x, "
"cx %#x, "
"dx %#x, "
"si %#x, "
"di %#x, "
"bp %#x\n",
myBp->out.ax.word,
myBp->out.bx.word,
myBp->out.cx.word,
myBp->out.dx.word,
myBp->out.si.word,
myBp->out.di.word,
myBp->out.bp.word);
#else
Debug("ax %#"FMT64"x, "
"bx %#"FMT64"x, "
"cx %#"FMT64"x, "
"dx %#"FMT64"x, "
"si %#"FMT64"x, "
"di %#"FMT64"x, "
"bp %#"FMT64"x\n",
myBp->out.ax.quad,
myBp->out.bx.quad,
myBp->out.cx.quad,
myBp->out.dx.quad,
myBp->out.si.quad,
myBp->out.di.quad,
myBp->out.bp.quad);
#endif
}
#else
# define BACKDOOR_LOG(args)
# define BACKDOOR_LOG_PROTO_STRUCT(x)
# define BACKDOOR_LOG_HB_PROTO_STRUCT(x)
#endif
/*
*-----------------------------------------------------------------------------
*
* Backdoor --
*
* Send a low-bandwidth basic request (16 bytes) to vmware, and return its
* reply (24 bytes).
*
* Result:
* None
*
* Side-effects:
* None
*
*-----------------------------------------------------------------------------
*/
void
Backdoor(Backdoor_proto *myBp) // IN/OUT
{
ASSERT(myBp);
myBp->in.ax.word = BDOOR_MAGIC;
myBp->in.dx.halfs.low = BDOOR_PORT;
BACKDOOR_LOG(("Backdoor: before "));
BACKDOOR_LOG_PROTO_STRUCT(myBp);
Backdoor_InOut(myBp);
BACKDOOR_LOG(("Backdoor: after "));
BACKDOOR_LOG_PROTO_STRUCT(myBp);
}
/*
*-----------------------------------------------------------------------------
*
* Backdoor_HbOut --
*
* Send a high-bandwidth basic request to vmware, and return its
* reply.
*
* Result:
* The host-side response is returned via the IN/OUT parameter.
*
* Side-effects:
* Pokes the high-bandwidth backdoor.
*
*-----------------------------------------------------------------------------
*/
void
Backdoor_HbOut(Backdoor_proto_hb *myBp) // IN/OUT
{
ASSERT(myBp);
myBp->in.ax.word = BDOOR_MAGIC;
myBp->in.dx.halfs.low = BDOORHB_PORT;
BACKDOOR_LOG(("Backdoor_HbOut: before "));
BACKDOOR_LOG_HB_PROTO_STRUCT(myBp);
BackdoorHbOut(myBp);
BACKDOOR_LOG(("Backdoor_HbOut: after "));
BACKDOOR_LOG_HB_PROTO_STRUCT(myBp);
}
/*
*-----------------------------------------------------------------------------
*
* Backdoor_HbIn --
*
* Send a basic request to vmware, and return its high-bandwidth
* reply
*
* Result:
* Host-side response returned via the IN/OUT parameter.
*
* Side-effects:
* Pokes the high-bandwidth backdoor.
*
*-----------------------------------------------------------------------------
*/
void
Backdoor_HbIn(Backdoor_proto_hb *myBp) // IN/OUT
{
ASSERT(myBp);
myBp->in.ax.word = BDOOR_MAGIC;
myBp->in.dx.halfs.low = BDOORHB_PORT;
BACKDOOR_LOG(("Backdoor_HbIn: before "));
BACKDOOR_LOG_HB_PROTO_STRUCT(myBp);
BackdoorHbIn(myBp);
BACKDOOR_LOG(("Backdoor_HbIn: after "));
BACKDOOR_LOG_HB_PROTO_STRUCT(myBp);
}
#ifdef __cplusplus
}
#endif
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