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[/] [openrisc/] [trunk/] [gnu-stable/] [gdb-7.2/] [sim/] [ppc/] [hw_iobus.c] - Blame information for rev 855

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1 330 jeremybenn
/*  This file is part of the program psim.
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    Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
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    This program is free software; you can redistribute it and/or modify
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    it under the terms of the GNU General Public License as published by
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    the Free Software Foundation; either version 2 of the License, or
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    (at your option) any later version.
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    This program 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
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    GNU General Public License for more details.
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    You should have received a copy of the GNU General Public License
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    along with this program; 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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    */
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#ifndef _HW_IOBUS_C_
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#define _HW_IOBUS_C_
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#ifndef STATIC_INLINE_HW_IOBUS
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#define STATIC_INLINE_HW_IOBUS STATIC_INLINE
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#endif
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#include "device_table.h"
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/* DEVICE
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   iobus - simple bus for attaching devices
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   DESCRIPTION
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   IOBUS provides a simple `local' bus for attaching (hanging)
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   programmed IO devices from.  All child devices are directly mapped
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   into this devices parent address space (after checking that the
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   attach address lies within the <<iobus>> address range.  address).
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   PROPERTIES
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   None.
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   */
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static void
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hw_iobus_attach_address_callback(device *me,
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                                 attach_type type,
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                                 int space,
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                                 unsigned_word addr,
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                                 unsigned nr_bytes,
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                                 access_type access,
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                                 device *client) /*callback/default*/
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{
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  int attach_space;
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  unsigned_word attach_address;
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  /* sanity check */
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  if (space != 0)
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    device_error(me, "invalid space (%d) specified by %s",
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                 space, device_path(client));
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  /* get the bus address */
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  device_address_to_attach_address(device_parent(me),
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                                   device_unit_address(me),
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                                   &attach_space,
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                                   &attach_address,
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                                   me);
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  if (addr < attach_address)
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    device_error(me, "Invalid attach address 0x%lx", (unsigned long)addr);
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  device_attach_address(device_parent(me),
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                        type,
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                        attach_space,
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                        addr,
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                        nr_bytes,
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                        access,
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                        client);
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}
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static device_callbacks const hw_iobus_callbacks = {
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  { NULL, },
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  { hw_iobus_attach_address_callback, },
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  { NULL, }, /* IO */
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  { NULL, }, /* DMA */
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  { NULL, }, /* interrupt */
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  { generic_device_unit_decode,
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    generic_device_unit_encode,
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    generic_device_address_to_attach_address,
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    generic_device_size_to_attach_size }
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};
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const device_descriptor hw_iobus_device_descriptor[] = {
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  { "iobus", NULL, &hw_iobus_callbacks },
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  { NULL, },
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};
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#endif /* _HW_IOBUS_ */

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