1 files changed, 114 insertions, 0 deletions
diff --git a/tools/ioemu/iodev/dma.h b/tools/ioemu/iodev/dma.h
new file mode 100644
index 0000000000..9f6c4eb60e
--- /dev/null
+++ b/tools/ioemu/iodev/dma.h
@@ -0,0 +1,114 @@
+/////////////////////////////////////////////////////////////////////////
+// $Id: dma.h,v 1.15 2003/05/03 07:41:27 vruppert Exp $
+/////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2002  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
+
+
+#ifndef _PCDMA_H
+#define _PCDMA_H
+
+
+#if BX_USE_DMA_SMF
+#  define BX_DMA_SMF  static
+#  define BX_DMA_THIS theDmaDevice->
+#else
+#  define BX_DMA_SMF
+#  define BX_DMA_THIS this->
+#endif
+
+
+
+class bx_dma_c : public bx_dma_stub_c {
+public:
+
+  bx_dma_c();
+  ~bx_dma_c(void);
+
+  virtual void     init(void);
+  virtual void     bios_init(void);
+  virtual void     reset(unsigned type);
+  virtual void     raise_HLDA(void);
+  virtual void     set_DRQ(unsigned channel, bx_bool val);
+  virtual unsigned get_TC(void);
+
+  virtual unsigned registerDMA8Channel(unsigned channel,
+    void (* dmaRead)(Bit8u *data_byte),
+    void (* dmaWrite)(Bit8u *data_byte),
+    const char *name);
+  virtual unsigned registerDMA16Channel(unsigned channel,
+    void (* dmaRead)(Bit16u *data_word),
+    void (* dmaWrite)(Bit16u *data_word),
+    const char *name);
+  virtual unsigned unregisterDMAChannel(unsigned channel);
+
+private:
+
+  static Bit32u read_handler(void *this_ptr, Bit32u address, unsigned io_len);
+  static void   write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len);
+#if !BX_USE_DMA_SMF
+  Bit32u   read( Bit32u   address, unsigned io_len) BX_CPP_AttrRegparmN(2);
+  void     write(Bit32u   address, Bit32u   value, unsigned io_len) BX_CPP_AttrRegparmN(3);
+#endif
+  BX_DMA_SMF void control_HRQ(bx_bool ma_sl);
+  BX_DMA_SMF void reset_controller(unsigned num);
+
+  struct {
+    bx_bool DRQ[4];  // DMA Request
+    bx_bool DACK[4]; // DMA Acknowlege
+
+    bx_bool mask[4];
+    bx_bool flip_flop;
+    Bit8u   status_reg;
+    Bit8u   command_reg;
+    Bit8u   request_reg;
+    Bit8u   temporary_reg;
+    struct {
+      struct {
+        Bit8u mode_type;
+        Bit8u address_decrement;
+        Bit8u autoinit_enable;
+        Bit8u transfer_type;
+        } mode;
+      Bit16u  base_address;
+      Bit16u  current_address;
+      Bit16u  base_count;
+      Bit16u  current_count;
+      Bit8u   page_reg;
+      bx_bool used;
+      } chan[4]; /* DMA channels 0..3 */
+    } s[2];  // state information DMA-1 / DMA-2
+
+  bx_bool HLDA;    // Hold Acknowlege
+  bx_bool TC;      // Terminal Count
+
+  struct {
+    void (* dmaRead8)(Bit8u *data_byte);
+    void (* dmaWrite8)(Bit8u *data_byte);
+    void (* dmaRead16)(Bit16u *data_word);
+    void (* dmaWrite16)(Bit16u *data_word);
+    } h[4]; // DMA read and write handlers
+
+  };
+
+#endif  // #ifndef _PCDMA_H