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/////////////////////////////////////////////////////////////////////////
// $Id: guest2host.h,v 1.8 2002/12/06 18:48:08 bdenney Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// This library 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; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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 GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#define BX_MAX_G2H_CHANNELS 8
#define BX_G2H_ERROR ((unsigned) -1)
// IO port number for this interface. Align on dword boundary.
#define BX_G2H_PORT 0x2000
// Magic number which is first dword passed by guest
#define BX_G2H_MAGIC 0xffeeddcc
// Number of dwords in packet from guest
#define BX_G2H_PACKET_SIZE 5
typedef Bit32u bx_guest_packet_t[BX_G2H_PACKET_SIZE];
typedef void (*bx_g2h_callback_t)(bx_guest_packet_t *);
class bx_g2h_c : public logfunctions {
public:
bx_g2h_c(void);
~bx_g2h_c(void);
static void init(void);
void reset (unsigned type);
unsigned acquire_channel(bx_g2h_callback_t);
unsigned deacquire_channel(unsigned channel);
private:
static Bit32u inp_handler(void *this_ptr, Bit32u addr, unsigned io_len);
static void outp_handler(void *this_ptr, Bit32u addr,
Bit32u value, unsigned io_len);
// state info
struct {
struct {
bx_g2h_callback_t f;
bx_bool used;
} callback[BX_MAX_G2H_CHANNELS];
// Define the data received from the guest OS.
// dword0: magic number, should be BX_G2H_MAGIC
// dword1: channel ID
// dword2: address of data structure in guest physical memory
// dword3: size of data structure in guest physical memory
// dword4: address of return data structure in guest physical memory
unsigned packet_count;
bx_guest_packet_t guest_packet;
} s;
};
extern bx_g2h_c bx_g2h;
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