73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
// Copyright (C) 2001 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#define BX_MAX_G2H_CHANNELS 8
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#define BX_G2H_ERROR ((unsigned) -1)
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// IO port number for this interface. Align on dword boundary.
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#define BX_G2H_PORT 0x2000
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// Magic number which is first dword passed by guest
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#define BX_G2H_MAGIC 0xffeeddcc
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// Number of dwords in packet from guest
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#define BX_G2H_PACKET_SIZE 5
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typedef Bit32u bx_guest_packet_t[BX_G2H_PACKET_SIZE];
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typedef void (*bx_g2h_callback_t)(bx_guest_packet_t *);
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class bx_g2h_c {
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public:
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bx_g2h_c(void);
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~bx_g2h_c(void);
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static void init(bx_devices_c *d);
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unsigned aquire_channel(bx_g2h_callback_t);
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unsigned deaquire_channel(unsigned channel);
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private:
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static Bit32u inp_handler(void *this_ptr, Bit32u addr, unsigned io_len);
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static void outp_handler(void *this_ptr, Bit32u addr,
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Bit32u value, unsigned io_len);
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// state info
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struct {
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struct {
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bx_g2h_callback_t f;
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Boolean used;
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} callback[BX_MAX_G2H_CHANNELS];
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// Define the data received from the guest OS.
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// dword0: magic number, should be BX_G2H_MAGIC
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// dword1: channel ID
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// dword2: address of data structure in guest physical memory
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// dword3: size of data structure in guest physical memory
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// dword4: address of return data structure in guest physical memory
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unsigned packet_count;
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bx_guest_packet_t guest_packet;
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} s;
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};
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extern bx_g2h_c bx_g2h;
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